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4b88f280 1#line 2 "perl.c"
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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 *
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LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
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11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
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17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 80# define validate_suid(rsfp) NOOP
cc69b689 81#else
b24bc095 82# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 83#endif
8d063cd8 84
d6f07c05
AL
85#define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
139d0ce6 87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
88 if (PL_op) \
89 CALLRUNOPS(aTHX);
90
91#define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
9a8aa25b 93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 94
e6827a76 95static void
daa7d858 96S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 97{
27da23d5 98 dVAR;
e6827a76
NC
99 if (!PL_curinterp) {
100 PERL_SET_INTERP(my_perl);
3db8f154 101#if defined(USE_ITHREADS)
e6827a76
NC
102 INIT_THREADS;
103 ALLOC_THREAD_KEY;
104 PERL_SET_THX(my_perl);
105 OP_REFCNT_INIT;
e8570548 106 OP_CHECK_MUTEX_INIT;
71ad1b0c 107 HINTS_REFCNT_INIT;
e6827a76 108 MUTEX_INIT(&PL_dollarzero_mutex);
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109 MUTEX_INIT(&PL_my_ctx_mutex);
110# endif
e6827a76 111 }
c0bce9aa
NC
112#if defined(USE_ITHREADS)
113 else
114#else
115 /* This always happens for non-ithreads */
116#endif
117 {
e6827a76
NC
118 PERL_SET_THX(my_perl);
119 }
120}
06d86050 121
cbec8ebe
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
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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;
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DM
154 if (!PL_veto_cleanup) {
155 PERL_SYS_TERM_BODY();
156 }
cbec8ebe
DM
157}
158
159
32e30700
GS
160#ifdef PERL_IMPLICIT_SYS
161PerlInterpreter *
7766f137
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162perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
163 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
164 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
165 struct IPerlDir* ipD, struct IPerlSock* ipS,
166 struct IPerlProc* ipP)
167{
168 PerlInterpreter *my_perl;
7918f24d
NC
169
170 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
171
9f653bb5 172 /* Newx() needs interpreter, so call malloc() instead */
32e30700 173 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 174 S_init_tls_and_interp(my_perl);
32e30700
GS
175 Zero(my_perl, 1, PerlInterpreter);
176 PL_Mem = ipM;
7766f137
GS
177 PL_MemShared = ipMS;
178 PL_MemParse = ipMP;
32e30700
GS
179 PL_Env = ipE;
180 PL_StdIO = ipStd;
181 PL_LIO = ipLIO;
182 PL_Dir = ipD;
183 PL_Sock = ipS;
184 PL_Proc = ipP;
7cb608b5 185 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 186
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187 return my_perl;
188}
189#else
954c1994
GS
190
191/*
ccfc67b7
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192=head1 Embedding Functions
193
954c1994
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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
34caed6d
DM
245 /* set read-only and try to insure than we wont see REFCNT==0
246 very often */
247
248 SvREADONLY_on(&PL_sv_undef);
249 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
250
251 sv_setpv(&PL_sv_no,PL_No);
252 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
253 of caching the numeric forms. However, as &PL_sv_no doesn't contain
254 a string that is a valid numer, we have to turn the public flags by
255 hand: */
34caed6d 256 SvNV(&PL_sv_no);
c1939273 257 SvIV(&PL_sv_no);
a43d94f2
NC
258 SvIOK_on(&PL_sv_no);
259 SvNOK_on(&PL_sv_no);
34caed6d
DM
260 SvREADONLY_on(&PL_sv_no);
261 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
262
263 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 264 SvNV(&PL_sv_yes);
c1939273 265 SvIV(&PL_sv_yes);
34caed6d
DM
266 SvREADONLY_on(&PL_sv_yes);
267 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
268
269 SvREADONLY_on(&PL_sv_placeholder);
270 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
271
272 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 273#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 274 PL_pidstatus = newHV();
ca0c25f6 275#endif
79072805 276
396482e1 277 PL_rs = newSVpvs("\n");
dc92893f 278
cea2e8a9 279 init_stacks();
79072805 280
748a9306 281 init_ids();
a5f75d66 282
312caa8e 283 JMPENV_BOOTSTRAP;
f86702cc
PP
284 STATUS_ALL_SUCCESS;
285
0672f40e 286 init_i18nl10n(1);
36477c24 287 SET_NUMERIC_STANDARD();
0b5b802d 288
ab821d7f 289#if defined(LOCAL_PATCH_COUNT)
3280af22 290 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
291#endif
292
52853b95
GS
293#ifdef HAVE_INTERP_INTERN
294 sys_intern_init();
295#endif
296
3a1ee7e8 297 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 298
3280af22
NIS
299 PL_fdpid = newAV(); /* for remembering popen pids by fd */
300 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 301 PL_errors = newSVpvs("");
76f68e9b
MHM
302 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
303 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
304 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 305#ifdef USE_ITHREADS
402d2eb1
NC
306 /* First entry is a list of empty elements. It needs to be initialised
307 else all hell breaks loose in S_find_uninit_var(). */
308 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 309 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 310 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 311#endif
e5dd39fc 312#ifdef USE_REENTRANT_API
59bd0823 313 Perl_reentrant_init(aTHX);
e5dd39fc 314#endif
3d47000e
AB
315
316 /* Note that strtab is a rather special HV. Assumptions are made
317 about not iterating on it, and not adding tie magic to it.
318 It is properly deallocated in perl_destruct() */
319 PL_strtab = newHV();
320
3d47000e
AB
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
323
0631ea03
AB
324#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
325 _dyld_lookup_and_bind
326 ("__environ", (unsigned long *) &environ_pointer, NULL);
327#endif /* environ */
328
2f42fcb0
JH
329#ifndef PERL_MICRO
330# ifdef USE_ENVIRON_ARRAY
0631ea03 331 PL_origenviron = environ;
2f42fcb0 332# endif
0631ea03
AB
333#endif
334
5311654c 335 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 336 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
337 * BeOS has those, but returns the wrong value.
338 * The HZ if not originally defined has been by now
339 * been defined as CLK_TCK, if available. */
dbc1d986 340#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
341 PL_clocktick = sysconf(_SC_CLK_TCK);
342 if (PL_clocktick <= 0)
343#endif
344 PL_clocktick = HZ;
345
081fc587
AB
346 PL_stashcache = newHV();
347
e8e3635e 348 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 349 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 350
27da23d5
JH
351#ifdef HAS_MMAP
352 if (!PL_mmap_page_size) {
353#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
354 {
355 SETERRNO(0, SS_NORMAL);
356# ifdef _SC_PAGESIZE
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
358# else
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
360# endif
361 if ((long) PL_mmap_page_size < 0) {
362 if (errno) {
44f8325f 363 SV * const error = ERRSV;
d4c19fe8 364 SvUPGRADE(error, SVt_PV);
0510663f 365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
366 }
367 else
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
369 }
370 }
371#else
372# ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
374# else
375# if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
377# endif
378# endif
379#endif
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
383 }
384#endif /* HAS_MMAP */
385
386#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
391#endif
392
7d113631
NC
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
394
a3e6e81e 395 PL_registered_mros = newHV();
9e169432
NC
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
a3e6e81e 398
8990e307 399 ENTER;
79072805
LW
400}
401
954c1994 402/*
62375a60
NIS
403=for apidoc nothreadhook
404
405Stub that provides thread hook for perl_destruct when there are
406no threads.
407
408=cut
409*/
410
411int
4e9e3734 412Perl_nothreadhook(pTHX)
62375a60 413{
96a5add6 414 PERL_UNUSED_CONTEXT;
62375a60
NIS
415 return 0;
416}
417
41e4abd8
NC
418#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419void
420Perl_dump_sv_child(pTHX_ SV *sv)
421{
422 ssize_t got;
bf357333
NC
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
425 union control_un control;
426 struct msghdr msg;
808ad2d0 427 struct iovec vec[2];
bf357333 428 struct cmsghdr *cmptr;
808ad2d0
NC
429 int returned_errno;
430 unsigned char buffer[256];
41e4abd8 431
7918f24d
NC
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433
bf357333 434 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
435 return;
436
437 PerlIO_flush(Perl_debug_log);
438
bf357333
NC
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 443 be open, the wait would be forever.) */
bf357333
NC
444
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
448 msg.msg_name = NULL;
449 msg.msg_namelen = 0;
450 msg.msg_iov = vec;
808ad2d0 451 msg.msg_iovlen = 1;
bf357333
NC
452
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
458
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
462
463 if(got < 0) {
bf357333 464 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
465 abort();
466 }
bf357333
NC
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
469 abort();
470 }
471
808ad2d0
NC
472 /* Return protocol is
473 int: errno value
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
476 */
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
480 vec[1].iov_len = 1;
481
482 got = readv(sock, vec, 2);
41e4abd8
NC
483
484 if(got < 0) {
485 perror("Debug leaking scalars parent read failed");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
808ad2d0 489 if(got < sizeof(returned_errno) + 1) {
41e4abd8 490 perror("Debug leaking scalars parent short read");
808ad2d0 491 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
492 abort();
493 }
494
808ad2d0
NC
495 if (*buffer) {
496 got = read(sock, buffer + 1, *buffer);
497 if(got < 0) {
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
500 abort();
501 }
502
503 if(got < *buffer) {
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
506 abort();
507 }
508 }
509
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
41e4abd8
NC
514 }
515}
516#endif
517
62375a60 518/*
954c1994
GS
519=for apidoc perl_destruct
520
521Shuts down a Perl interpreter. See L<perlembed>.
522
523=cut
524*/
525
31d77e54 526int
0cb96387 527perl_destruct(pTHXx)
79072805 528{
27da23d5 529 dVAR;
be2ea8ed 530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 531 HV *hv;
2aa47728 532#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
533 pid_t child;
534#endif
8990e307 535
7918f24d
NC
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537#ifndef MULTIPLICITY
ed6c66dd 538 PERL_UNUSED_ARG(my_perl);
7918f24d 539#endif
9d4ba2ae 540
3d22c4f0
GG
541 assert(PL_scopestack_ix == 1);
542
7766f137
GS
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
545
3280af22 546 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
547#ifdef DEBUGGING
548 {
9d4ba2ae
AL
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (s) {
e1ec3a88 551 const int i = atoi(s);
5f05dabc
PP
552 if (destruct_level < i)
553 destruct_level = i;
554 }
4633a7c4
LW
555 }
556#endif
557
27da23d5 558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
559 dJMPENV;
560 int x = 0;
561
562 JMPENV_PUSH(x);
1b6737cc 563 PERL_UNUSED_VAR(x);
9ebf26ad 564 if (PL_endav && !PL_minus_c) {
ca7b837b 565 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 566 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 567 }
f3faeb53 568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
16c91539 577 if (PL_threadhook(aTHX)) {
62375a60 578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
aac9d523
DM
754 /* note that PL_main_cv isn't usually actually freed at this point,
755 * due to the CvOUTSIDE refs from subs compiled within it. It will
756 * get freed once all the subs are freed in sv_clean_all(), for
757 * destruct_level > 0 */
3280af22 758 SvREFCNT_dec(PL_main_cv);
601f1833 759 PL_main_cv = NULL;
ca7b837b 760 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 761
13621cfb
NIS
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
764 be cleaned up now.
765 */
766
767 PerlIO_destruct(aTHX);
768
3280af22 769 if (PL_sv_objcount) {
a0d0e21e
LW
770 /*
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
774 */
a0d0e21e 775 sv_clean_objs();
bf9cdc68 776 PL_sv_objcount = 0;
8990e307
LW
777 }
778
5cd24f17 779 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 780 SvREFCNT_dec(PL_warnhook);
a0714e2c 781 PL_warnhook = NULL;
3280af22 782 SvREFCNT_dec(PL_diehook);
a0714e2c 783 PL_diehook = NULL;
5cd24f17 784
4b556e6c 785 /* call exit list functions */
3280af22 786 while (PL_exitlistlen-- > 0)
acfe0abc 787 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 788
3280af22 789 Safefree(PL_exitlist);
4b556e6c 790
1c4916e5
CB
791 PL_exitlist = NULL;
792 PL_exitlistlen = 0;
793
a3e6e81e
NC
794 SvREFCNT_dec(PL_registered_mros);
795
551a8b83 796 /* jettison our possibly duplicated environment */
4b647fb0
DM
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
799 */
2f42fcb0 800#ifndef PERL_MICRO
4b647fb0 801#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 802 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
803#ifdef USE_ITHREADS
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
806#endif
807 )
808 {
551a8b83
JH
809 I32 i;
810
811 for (i = 0; environ[i]; i++)
4b420006 812 safesysfree(environ[i]);
0631ea03 813
4b420006
JH
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
551a8b83
JH
816
817 environ = PL_origenviron;
818 }
819#endif
2f42fcb0 820#endif /* !PERL_MICRO */
551a8b83 821
30985c42
JH
822 if (destruct_level == 0) {
823
824 DEBUG_P(debprofdump());
825
826#if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
829#endif
830
831 CopFILE_free(&PL_compiling);
30985c42
JH
832
833 /* The exit() function will do everything that needs doing. */
834 return STATUS_EXIT;
835 }
836
5f8cb046
DM
837#ifdef USE_ITHREADS
838 /* the syntax tree is shared between clones
839 * so op_free(PL_main_root) only ReREFCNT_dec's
840 * REGEXPs in the parent interpreter
841 * we need to manually ReREFCNT_dec for the clones
842 */
5f8cb046 843 SvREFCNT_dec(PL_regex_padav);
7d49f689 844 PL_regex_padav = NULL;
5f8cb046 845 PL_regex_pad = NULL;
d4d03940 846 Safefree(PL_stashpad);
5f8cb046
DM
847#endif
848
ad64d0ec 849 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
850 PL_stashcache = NULL;
851
5f05dabc
PP
852 /* loosen bonds of global variables */
853
2f9285f8
DM
854 /* XXX can PL_parser still be non-null here? */
855 if(PL_parser && PL_parser->rsfp) {
856 (void)PerlIO_close(PL_parser->rsfp);
857 PL_parser->rsfp = NULL;
8ebc5c01
PP
858 }
859
84386e14
RGS
860 if (PL_minus_F) {
861 Safefree(PL_splitstr);
862 PL_splitstr = NULL;
863 }
864
8ebc5c01 865 /* switches */
3280af22
NIS
866 PL_minus_n = FALSE;
867 PL_minus_p = FALSE;
868 PL_minus_l = FALSE;
869 PL_minus_a = FALSE;
870 PL_minus_F = FALSE;
871 PL_doswitches = FALSE;
599cee73 872 PL_dowarn = G_WARN_OFF;
3280af22 873 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
874 PL_unsafe = FALSE;
875
876 Safefree(PL_inplace);
bd61b366 877 PL_inplace = NULL;
a7cb1f99 878 SvREFCNT_dec(PL_patchlevel);
1e8125c6 879 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
880
881 if (PL_e_script) {
882 SvREFCNT_dec(PL_e_script);
a0714e2c 883 PL_e_script = NULL;
8ebc5c01
PP
884 }
885
bf9cdc68
RG
886 PL_perldb = 0;
887
8ebc5c01
PP
888 /* magical thingies */
889
e23d9e2f
CS
890 SvREFCNT_dec(PL_ofsgv); /* *, */
891 PL_ofsgv = NULL;
5f05dabc 892
7889fe52 893 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 894 PL_ors_sv = NULL;
8ebc5c01 895
3280af22 896 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 897 PL_rs = NULL;
dc92893f 898
d33b2eba 899 Safefree(PL_osname); /* $^O */
bd61b366 900 PL_osname = NULL;
5f05dabc 901
3280af22 902 SvREFCNT_dec(PL_statname);
a0714e2c
SS
903 PL_statname = NULL;
904 PL_statgv = NULL;
5f05dabc 905
8ebc5c01
PP
906 /* defgv, aka *_ should be taken care of elsewhere */
907
7d5ea4e7
GS
908 /* float buffer */
909 Safefree(PL_efloatbuf);
bd61b366 910 PL_efloatbuf = NULL;
7d5ea4e7
GS
911 PL_efloatsize = 0;
912
8ebc5c01 913 /* startup and shutdown function lists */
3280af22 914 SvREFCNT_dec(PL_beginav);
5a837c8f 915 SvREFCNT_dec(PL_beginav_save);
3280af22 916 SvREFCNT_dec(PL_endav);
7d30b5c4 917 SvREFCNT_dec(PL_checkav);
ece599bd 918 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
919 SvREFCNT_dec(PL_unitcheckav);
920 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 921 SvREFCNT_dec(PL_initav);
7d49f689
NC
922 PL_beginav = NULL;
923 PL_beginav_save = NULL;
924 PL_endav = NULL;
925 PL_checkav = NULL;
926 PL_checkav_save = NULL;
3c10abe3
AG
927 PL_unitcheckav = NULL;
928 PL_unitcheckav_save = NULL;
7d49f689 929 PL_initav = NULL;
5618dfe8 930
8ebc5c01 931 /* shortcuts just get cleared */
a0714e2c
SS
932 PL_envgv = NULL;
933 PL_incgv = NULL;
934 PL_hintgv = NULL;
935 PL_errgv = NULL;
936 PL_argvgv = NULL;
937 PL_argvoutgv = NULL;
938 PL_stdingv = NULL;
939 PL_stderrgv = NULL;
940 PL_last_in_gv = NULL;
941 PL_replgv = NULL;
942 PL_DBgv = NULL;
943 PL_DBline = NULL;
944 PL_DBsub = NULL;
945 PL_DBsingle = NULL;
946 PL_DBtrace = NULL;
947 PL_DBsignal = NULL;
601f1833 948 PL_DBcv = NULL;
7d49f689 949 PL_dbargs = NULL;
5c284bb0 950 PL_debstash = NULL;
8ebc5c01 951
7a1c5554 952 SvREFCNT_dec(PL_argvout_stack);
7d49f689 953 PL_argvout_stack = NULL;
8ebc5c01 954
5c831c24 955 SvREFCNT_dec(PL_modglobal);
5c284bb0 956 PL_modglobal = NULL;
5c831c24 957 SvREFCNT_dec(PL_preambleav);
7d49f689 958 PL_preambleav = NULL;
5c831c24 959 SvREFCNT_dec(PL_subname);
a0714e2c 960 PL_subname = NULL;
ca0c25f6 961#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 962 SvREFCNT_dec(PL_pidstatus);
5c284bb0 963 PL_pidstatus = NULL;
ca0c25f6 964#endif
5c831c24 965 SvREFCNT_dec(PL_toptarget);
a0714e2c 966 PL_toptarget = NULL;
5c831c24 967 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
968 PL_bodytarget = NULL;
969 PL_formtarget = NULL;
5c831c24 970
d33b2eba 971 /* free locale stuff */
b9582b6a 972#ifdef USE_LOCALE_COLLATE
d33b2eba 973 Safefree(PL_collation_name);
bd61b366 974 PL_collation_name = NULL;
b9582b6a 975#endif
d33b2eba 976
b9582b6a 977#ifdef USE_LOCALE_NUMERIC
d33b2eba 978 Safefree(PL_numeric_name);
bd61b366 979 PL_numeric_name = NULL;
a453c169 980 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 981 PL_numeric_radix_sv = NULL;
b9582b6a 982#endif
d33b2eba 983
5c831c24
GS
984 /* clear utf8 character classes */
985 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
986 SvREFCNT_dec(PL_utf8_alpha);
987 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
988 SvREFCNT_dec(PL_utf8_graph);
989 SvREFCNT_dec(PL_utf8_digit);
990 SvREFCNT_dec(PL_utf8_upper);
991 SvREFCNT_dec(PL_utf8_lower);
992 SvREFCNT_dec(PL_utf8_print);
993 SvREFCNT_dec(PL_utf8_punct);
994 SvREFCNT_dec(PL_utf8_xdigit);
995 SvREFCNT_dec(PL_utf8_mark);
996 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 997 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 998 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 999 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1000 SvREFCNT_dec(PL_utf8_idstart);
1001 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1002 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1003 PL_utf8_alnum = NULL;
a0714e2c
SS
1004 PL_utf8_alpha = NULL;
1005 PL_utf8_space = NULL;
a0714e2c
SS
1006 PL_utf8_graph = NULL;
1007 PL_utf8_digit = NULL;
1008 PL_utf8_upper = NULL;
1009 PL_utf8_lower = NULL;
1010 PL_utf8_print = NULL;
1011 PL_utf8_punct = NULL;
1012 PL_utf8_xdigit = NULL;
1013 PL_utf8_mark = NULL;
1014 PL_utf8_toupper = NULL;
1015 PL_utf8_totitle = NULL;
1016 PL_utf8_tolower = NULL;
1017 PL_utf8_tofold = NULL;
1018 PL_utf8_idstart = NULL;
1019 PL_utf8_idcont = NULL;
2726813d 1020 PL_utf8_foldclosures = NULL;
5c831c24 1021
971a9dd3 1022 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1023 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1024 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1025 cophh_free(CopHINTHASH_get(&PL_compiling));
1026 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1027 CopFILE_free(&PL_compiling);
5c831c24 1028
a0d0e21e 1029 /* Prepare to destruct main symbol table. */
5f05dabc 1030
3280af22 1031 hv = PL_defstash;
ca556bcd
DM
1032 /* break ref loop *:: <=> %:: */
1033 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1034 PL_defstash = 0;
a0d0e21e 1035 SvREFCNT_dec(hv);
5c831c24 1036 SvREFCNT_dec(PL_curstname);
a0714e2c 1037 PL_curstname = NULL;
a0d0e21e 1038
5a844595
GS
1039 /* clear queued errors */
1040 SvREFCNT_dec(PL_errors);
a0714e2c 1041 PL_errors = NULL;
5a844595 1042
dd69841b
BB
1043 SvREFCNT_dec(PL_isarev);
1044
a0d0e21e 1045 FREETMPS;
9b387841 1046 if (destruct_level >= 2) {
3280af22 1047 if (PL_scopestack_ix != 0)
9b387841
NC
1048 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1049 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1050 (long)PL_scopestack_ix);
3280af22 1051 if (PL_savestack_ix != 0)
9b387841
NC
1052 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1053 "Unbalanced saves: %ld more saves than restores\n",
1054 (long)PL_savestack_ix);
3280af22 1055 if (PL_tmps_floor != -1)
9b387841
NC
1056 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1057 (long)PL_tmps_floor + 1);
a0d0e21e 1058 if (cxstack_ix != -1)
9b387841
NC
1059 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1060 (long)cxstack_ix + 1);
a0d0e21e 1061 }
8990e307 1062
776df701 1063#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1064 /* the entries in this list are allocated via SV PVX's, so get freed
1065 * in sv_clean_all */
1066 Safefree(PL_my_cxt_list);
776df701 1067#endif
57bb2458 1068
8990e307 1069 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1070
1071 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1072 while (sv_clean_all() > 2)
5226ed68
JH
1073 ;
1074
d4777f27
GS
1075 AvREAL_off(PL_fdpid); /* no surviving entries */
1076 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1077 PL_fdpid = NULL;
d33b2eba 1078
6c644e78
GS
1079#ifdef HAVE_INTERP_INTERN
1080 sys_intern_clear();
1081#endif
1082
6e72f9df
PP
1083 /* Destruct the global string table. */
1084 {
1085 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1086 * so that sv_free() won't fail on them.
80459961
NC
1087 * Now that the global string table is using a single hunk of memory
1088 * for both HE and HEK, we either need to explicitly unshare it the
1089 * correct way, or actually free things here.
6e72f9df 1090 */
80459961
NC
1091 I32 riter = 0;
1092 const I32 max = HvMAX(PL_strtab);
c4420975 1093 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1094 HE *hent = array[0];
1095
6e72f9df 1096 for (;;) {
0453d815 1097 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1098 HE * const next = HeNEXT(hent);
9014280d 1099 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1100 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1101 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1102 Safefree(hent);
1103 hent = next;
6e72f9df
PP
1104 }
1105 if (!hent) {
1106 if (++riter > max)
1107 break;
1108 hent = array[riter];
1109 }
1110 }
80459961
NC
1111
1112 Safefree(array);
1113 HvARRAY(PL_strtab) = 0;
1114 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1115 }
3280af22 1116 SvREFCNT_dec(PL_strtab);
6e72f9df 1117
e652bb2f 1118#ifdef USE_ITHREADS
c21d1a0f 1119 /* free the pointer tables used for cloning */
a0739874 1120 ptr_table_free(PL_ptr_table);
bf9cdc68 1121 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1122#endif
a0739874 1123
d33b2eba
GS
1124 /* free special SVs */
1125
1126 SvREFCNT(&PL_sv_yes) = 0;
1127 sv_clear(&PL_sv_yes);
1128 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1129 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1130
1131 SvREFCNT(&PL_sv_no) = 0;
1132 sv_clear(&PL_sv_no);
1133 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1135
9f375a43
DM
1136 {
1137 int i;
1138 for (i=0; i<=2; i++) {
1139 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1140 sv_clear(PERL_DEBUG_PAD(i));
1141 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1142 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1143 }
1144 }
1145
0453d815 1146 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1147 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1148
eba0f806
DM
1149#ifdef DEBUG_LEAKING_SCALARS
1150 if (PL_sv_count != 0) {
1151 SV* sva;
1152 SV* sv;
1153 register SV* svend;
1154
ad64d0ec 1155 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1156 svend = &sva[SvREFCNT(sva)];
1157 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1158 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1159 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1160 " flags=0x%"UVxf
fd0854ff 1161 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1162 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1163 "serial %"UVuf"\n",
574b8821
NC
1164 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1165 pTHX__VALUE,
fd0854ff
DM
1166 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1167 sv->sv_debug_line,
1168 sv->sv_debug_inpad ? "for" : "by",
1169 sv->sv_debug_optype ?
1170 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1171 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1172 sv->sv_debug_serial
fd0854ff 1173 );
2aa47728 1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1175 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1176#endif
eba0f806
DM
1177 }
1178 }
1179 }
1180 }
2aa47728
NC
1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1182 {
1183 int status;
1184 fd_set rset;
1185 /* Wait for up to 4 seconds for child to terminate.
1186 This seems to be the least effort way of timing out on reaping
1187 its exit status. */
1188 struct timeval waitfor = {4, 0};
41e4abd8 1189 int sock = PL_dumper_fd;
2aa47728
NC
1190
1191 shutdown(sock, 1);
1192 FD_ZERO(&rset);
1193 FD_SET(sock, &rset);
1194 select(sock + 1, &rset, NULL, NULL, &waitfor);
1195 waitpid(child, &status, WNOHANG);
1196 close(sock);
1197 }
1198#endif
eba0f806 1199#endif
77abb4c6
NC
1200#ifdef DEBUG_LEAKING_SCALARS_ABORT
1201 if (PL_sv_count)
1202 abort();
1203#endif
bf9cdc68 1204 PL_sv_count = 0;
eba0f806 1205
f1fac472
NC
1206#ifdef PERL_DEBUG_READONLY_OPS
1207 free(PL_slabs);
1208 PL_slabs = NULL;
1209 PL_slab_count = 0;
1210#endif
eba0f806 1211
56a2bab7 1212#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1213 /* No more IO - including error messages ! */
1214 PerlIO_cleanup(aTHX);
1215#endif
1216
9f4bd222 1217 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1218 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1219 for no arg - and will try and SvREFCNT_dec it.
1220 */
1221 SvREFCNT(&PL_sv_undef) = 0;
1222 SvREADONLY_off(&PL_sv_undef);
1223
3280af22 1224 Safefree(PL_origfilename);
bd61b366 1225 PL_origfilename = NULL;
3280af22 1226 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1227 PL_reg_start_tmp = (char**)NULL;
1228 PL_reg_start_tmpl = 0;
43c5f42d 1229 Safefree(PL_reg_curpm);
82ba1be6 1230 Safefree(PL_reg_poscache);
dd28f7bb 1231 free_tied_hv_pool();
3280af22 1232 Safefree(PL_op_mask);
cf36064f 1233 Safefree(PL_psig_name);
bf9cdc68 1234 PL_psig_name = (SV**)NULL;
d525a7b2 1235 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1236 {
1237 /* We need to NULL PL_psig_pend first, so that
1238 signal handlers know not to use it */
1239 int *psig_save = PL_psig_pend;
1240 PL_psig_pend = (int*)NULL;
1241 Safefree(psig_save);
1242 }
a0714e2c 1243 PL_formfeed = NULL;
6e72f9df 1244 nuke_stacks();
bf9cdc68
RG
1245 PL_tainting = FALSE;
1246 PL_taint_warn = FALSE;
3280af22 1247 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1248 PL_debug = 0;
ac27b0f5 1249
a0d0e21e 1250 DEBUG_P(debprofdump());
d33b2eba 1251
e5dd39fc 1252#ifdef USE_REENTRANT_API
10bc17b6 1253 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1254#endif
1255
612f20c3
GS
1256 sv_free_arenas();
1257
5d9a96ca
DM
1258 while (PL_regmatch_slab) {
1259 regmatch_slab *s = PL_regmatch_slab;
1260 PL_regmatch_slab = PL_regmatch_slab->next;
1261 Safefree(s);
1262 }
1263
fc36a67e
PP
1264 /* As the absolutely last thing, free the non-arena SV for mess() */
1265
3280af22 1266 if (PL_mess_sv) {
f350b448
NC
1267 /* we know that type == SVt_PVMG */
1268
9c63abab 1269 /* it could have accumulated taint magic */
f350b448
NC
1270 MAGIC* mg;
1271 MAGIC* moremagic;
1272 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1273 moremagic = mg->mg_moremagic;
1274 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1275 && mg->mg_len >= 0)
1276 Safefree(mg->mg_ptr);
1277 Safefree(mg);
9c63abab 1278 }
f350b448 1279
fc36a67e 1280 /* we know that type >= SVt_PV */
8bd4d4c5 1281 SvPV_free(PL_mess_sv);
3280af22
NIS
1282 Safefree(SvANY(PL_mess_sv));
1283 Safefree(PL_mess_sv);
a0714e2c 1284 PL_mess_sv = NULL;
fc36a67e 1285 }
37038d91 1286 return STATUS_EXIT;
79072805
LW
1287}
1288
954c1994
GS
1289/*
1290=for apidoc perl_free
1291
1292Releases a Perl interpreter. See L<perlembed>.
1293
1294=cut
1295*/
1296
79072805 1297void
0cb96387 1298perl_free(pTHXx)
79072805 1299{
5174512c
NC
1300 dVAR;
1301
7918f24d
NC
1302 PERL_ARGS_ASSERT_PERL_FREE;
1303
c301d606
DM
1304 if (PL_veto_cleanup)
1305 return;
1306
7cb608b5 1307#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1308 {
1309 /*
1310 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1311 * value as we're probably hunting memory leaks then
1312 */
1313 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1314 if (!s || atoi(s) == 0) {
4fd0a9b8 1315 const U32 old_debug = PL_debug;
55ef9aae
MHM
1316 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1317 thread at thread exit. */
4fd0a9b8
NC
1318 if (DEBUG_m_TEST) {
1319 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1320 "free this thread's memory\n");
1321 PL_debug &= ~ DEBUG_m_FLAG;
1322 }
55ef9aae
MHM
1323 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1324 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1325 PL_debug = old_debug;
55ef9aae
MHM
1326 }
1327 }
7cb608b5
NC
1328#endif
1329
acfe0abc 1330#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1331# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1332 {
acfe0abc 1333# ifdef NETWARE
7af12a34 1334 void *host = nw_internal_host;
acfe0abc 1335# else
7af12a34 1336 void *host = w32_internal_host;
acfe0abc 1337# endif
7af12a34 1338 PerlMem_free(aTHXx);
acfe0abc 1339# ifdef NETWARE
7af12a34 1340 nw_delete_internal_host(host);
acfe0abc 1341# else
7af12a34 1342 win32_delete_internal_host(host);
acfe0abc 1343# endif
7af12a34 1344 }
1c0ca838
GS
1345# else
1346 PerlMem_free(aTHXx);
1347# endif
acfe0abc
GS
1348#else
1349 PerlMem_free(aTHXx);
76e3520e 1350#endif
79072805
LW
1351}
1352
b7f7fff6 1353#if defined(USE_ITHREADS)
aebd1ac7
GA
1354/* provide destructors to clean up the thread key when libperl is unloaded */
1355#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1356
826955bd 1357#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1358#pragma fini "perl_fini"
666ad1ec
GA
1359#elif defined(__sun) && !defined(__GNUC__)
1360#pragma fini (perl_fini)
aebd1ac7
GA
1361#endif
1362
0dbb1585
AL
1363static void
1364#if defined(__GNUC__)
1365__attribute__((destructor))
aebd1ac7 1366#endif
de009b76 1367perl_fini(void)
aebd1ac7 1368{
27da23d5 1369 dVAR;
c301d606 1370 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1371 FREE_THREAD_KEY;
1372}
1373
1374#endif /* WIN32 */
1375#endif /* THREADS */
1376
4b556e6c 1377void
864dbfa3 1378Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1379{
97aff369 1380 dVAR;
3280af22
NIS
1381 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1382 PL_exitlist[PL_exitlistlen].fn = fn;
1383 PL_exitlist[PL_exitlistlen].ptr = ptr;
1384 ++PL_exitlistlen;
4b556e6c
JD
1385}
1386
b7975bdd
NC
1387STATIC void
1388S_set_caret_X(pTHX) {
97aff369 1389 dVAR;
fafc274c 1390 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1391 if (tmpgv) {
0f1723e1 1392 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1393#if defined(OS2)
1394 sv_setpv(caret_x, os2_execname(aTHX));
1395#else
2982a345
NC
1396# ifdef USE_KERN_PROC_PATHNAME
1397 size_t size = 0;
1398 int mib[4];
1399 mib[0] = CTL_KERN;
1400 mib[1] = KERN_PROC;
1401 mib[2] = KERN_PROC_PATHNAME;
1402 mib[3] = -1;
1403
1404 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1405 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1406 sv_grow(caret_x, size);
1407
1408 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1409 && size > 2) {
1410 SvPOK_only(caret_x);
1411 SvCUR_set(caret_x, size - 1);
1412 SvTAINT(caret_x);
1413 return;
1414 }
1415 }
ae60cb46
NC
1416# elif defined(USE_NSGETEXECUTABLEPATH)
1417 char buf[1];
1418 uint32_t size = sizeof(buf);
ae60cb46
NC
1419
1420 _NSGetExecutablePath(buf, &size);
1421 if (size < MAXPATHLEN * MAXPATHLEN) {
1422 sv_grow(caret_x, size);
1423 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1424 char *const tidied = realpath(SvPVX(caret_x), NULL);
1425 if (tidied) {
1426 sv_setpv(caret_x, tidied);
1427 free(tidied);
1428 } else {
1429 SvPOK_only(caret_x);
1430 SvCUR_set(caret_x, size);
1431 }
1432 return;
1433 }
1434 }
2982a345 1435# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1436 char buf[MAXPATHLEN];
1437 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1438
1439 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1440 includes a spurious NUL which will cause $^X to fail in system
1441 or backticks (this will prevent extensions from being built and
1442 many tests from working). readlink is not meant to add a NUL.
1443 Normal readlink works fine.
1444 */
1445 if (len > 0 && buf[len-1] == '\0') {
1446 len--;
1447 }
1448
1449 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1450 returning the text "unknown" from the readlink rather than the path
1451 to the executable (or returning an error from the readlink). Any
1452 valid path has a '/' in it somewhere, so use that to validate the
1453 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1454 */
1455 if (len > 0 && memchr(buf, '/', len)) {
1456 sv_setpvn(caret_x, buf, len);
82552a95 1457 return;
700dd4f8 1458 }
82552a95
NC
1459# endif
1460 /* Fallback to this: */
0f1723e1 1461 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1462#endif
b7975bdd
NC
1463 }
1464}
1465
954c1994
GS
1466/*
1467=for apidoc perl_parse
1468
1469Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1470
1471=cut
1472*/
1473
03d9f026
FC
1474#define SET_CURSTASH(newstash) \
1475 if (PL_curstash != newstash) { \
1476 SvREFCNT_dec(PL_curstash); \
1477 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1478 }
1479
79072805 1480int
0cb96387 1481perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1482{
27da23d5 1483 dVAR;
6224f72b 1484 I32 oldscope;
6224f72b 1485 int ret;
db36c5a1 1486 dJMPENV;
8d063cd8 1487
7918f24d
NC
1488 PERL_ARGS_ASSERT_PERL_PARSE;
1489#ifndef MULTIPLICITY
ed6c66dd 1490 PERL_UNUSED_ARG(my_perl);
7918f24d 1491#endif
9d4ba2ae 1492
b0891165
JH
1493#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1494 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1495 * This MUST be done before any hash stores or fetches take place.
486ec47a 1496 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1497 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1498 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1499 if (!PL_rehash_seed_set)
1500 PL_rehash_seed = get_hash_seed();
b0891165 1501 {
9d4ba2ae 1502 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1503
1b6737cc
AL
1504 if (s && (atoi(s) == 1))
1505 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1506 }
1507#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1508
3280af22 1509 PL_origargc = argc;
e2975953 1510 PL_origargv = argv;
a0d0e21e 1511
a2722ac9
GA
1512 if (PL_origalen != 0) {
1513 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1514 }
1515 else {
3cb9023d
JH
1516 /* Set PL_origalen be the sum of the contiguous argv[]
1517 * elements plus the size of the env in case that it is
e9137a8e 1518 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1519 * as the maximum modifiable length of $0. In the worst case
1520 * the area we are able to modify is limited to the size of
43c32782 1521 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1522 * --jhi */
e1ec3a88 1523 const char *s = NULL;
54bfe034 1524 int i;
1b6737cc 1525 const UV mask =
7d8e7db3 1526 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1527 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1528 const UV aligned =
43c32782
JH
1529 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1530
1531 /* See if all the arguments are contiguous in memory. Note
1532 * that 'contiguous' is a loose term because some platforms
1533 * align the argv[] and the envp[]. If the arguments look
1534 * like non-aligned, assume that they are 'strictly' or
1535 * 'traditionally' contiguous. If the arguments look like
1536 * aligned, we just check that they are within aligned
1537 * PTRSIZE bytes. As long as no system has something bizarre
1538 * like the argv[] interleaved with some other data, we are
1539 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1540 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1541 while (*s) s++;
1542 for (i = 1; i < PL_origargc; i++) {
1543 if ((PL_origargv[i] == s + 1
43c32782 1544#ifdef OS2
c8941eeb 1545 || PL_origargv[i] == s + 2
43c32782 1546#endif
c8941eeb
JH
1547 )
1548 ||
1549 (aligned &&
1550 (PL_origargv[i] > s &&
1551 PL_origargv[i] <=
1552 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1553 )
1554 {
1555 s = PL_origargv[i];
1556 while (*s) s++;
1557 }
1558 else
1559 break;
54bfe034 1560 }
54bfe034 1561 }
a4a109c2
JD
1562
1563#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1564 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1565 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1566 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1567 ||
1568 (aligned &&
1569 (PL_origenviron[0] > s &&
1570 PL_origenviron[0] <=
1571 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1572 )
1573 {
9d419b5f 1574#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1575 s = PL_origenviron[0];
1576 while (*s) s++;
1577#endif
bd61b366 1578 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1579 /* Force copy of environment. */
1580 for (i = 1; PL_origenviron[i]; i++) {
1581 if (PL_origenviron[i] == s + 1
1582 ||
1583 (aligned &&
1584 (PL_origenviron[i] > s &&
1585 PL_origenviron[i] <=
1586 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1587 )
1588 {
1589 s = PL_origenviron[i];
1590 while (*s) s++;
1591 }
1592 else
1593 break;
54bfe034 1594 }
43c32782 1595 }
54bfe034 1596 }
a4a109c2
JD
1597#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1598
2d2af554 1599 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1600 }
1601
3280af22 1602 if (PL_do_undump) {
a0d0e21e
LW
1603
1604 /* Come here if running an undumped a.out. */
1605
3280af22
NIS
1606 PL_origfilename = savepv(argv[0]);
1607 PL_do_undump = FALSE;
a0d0e21e 1608 cxstack_ix = -1; /* start label stack again */
748a9306 1609 init_ids();
b7975bdd
NC
1610 assert (!PL_tainted);
1611 TAINT;
1612 S_set_caret_X(aTHX);
1613 TAINT_NOT;
a0d0e21e
LW
1614 init_postdump_symbols(argc,argv,env);
1615 return 0;
1616 }
1617
3280af22 1618 if (PL_main_root) {
3280af22 1619 op_free(PL_main_root);
5f66b61c 1620 PL_main_root = NULL;
ff0cee69 1621 }
5f66b61c 1622 PL_main_start = NULL;
3280af22 1623 SvREFCNT_dec(PL_main_cv);
601f1833 1624 PL_main_cv = NULL;
79072805 1625
3280af22
NIS
1626 time(&PL_basetime);
1627 oldscope = PL_scopestack_ix;
599cee73 1628 PL_dowarn = G_WARN_OFF;
f86702cc 1629
14dd3ad8 1630 JMPENV_PUSH(ret);
6224f72b 1631 switch (ret) {
312caa8e 1632 case 0:
14dd3ad8 1633 parse_body(env,xsinit);
9ebf26ad 1634 if (PL_unitcheckav) {
3c10abe3 1635 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1636 }
1637 if (PL_checkav) {
ca7b837b 1638 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1639 call_list(oldscope, PL_checkav);
9ebf26ad 1640 }
14dd3ad8
GS
1641 ret = 0;
1642 break;
6224f72b
GS
1643 case 1:
1644 STATUS_ALL_FAILURE;
1645 /* FALL THROUGH */
1646 case 2:
1647 /* my_exit() was called */
3280af22 1648 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1649 LEAVE;
1650 FREETMPS;
03d9f026 1651 SET_CURSTASH(PL_defstash);
9ebf26ad 1652 if (PL_unitcheckav) {
3c10abe3 1653 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1654 }
1655 if (PL_checkav) {
ca7b837b 1656 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1657 call_list(oldscope, PL_checkav);
9ebf26ad 1658 }
37038d91 1659 ret = STATUS_EXIT;
14dd3ad8 1660 break;
6224f72b 1661 case 3:
bf49b057 1662 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1663 ret = 1;
1664 break;
6224f72b 1665 }
14dd3ad8
GS
1666 JMPENV_POP;
1667 return ret;
1668}
1669
4a5df386
NC
1670/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1671 miniperl, and we need to see those flags reflected in the values here. */
1672
1673/* What this returns is subject to change. Use the public interface in Config.
1674 */
1675static void
1676S_Internals_V(pTHX_ CV *cv)
1677{
1678 dXSARGS;
1679#ifdef LOCAL_PATCH_COUNT
1680 const int local_patch_count = LOCAL_PATCH_COUNT;
1681#else
1682 const int local_patch_count = 0;
1683#endif
2dc296d2 1684 const int entries = 3 + local_patch_count;
4a5df386
NC
1685 int i;
1686 static char non_bincompat_options[] =
1687# ifdef DEBUGGING
1688 " DEBUGGING"
1689# endif
1690# ifdef NO_MATHOMS
0d311fbe 1691 " NO_MATHOMS"
4a5df386
NC
1692# endif
1693# ifdef PERL_DISABLE_PMC
1694 " PERL_DISABLE_PMC"
1695# endif
1696# ifdef PERL_DONT_CREATE_GVSV
1697 " PERL_DONT_CREATE_GVSV"
1698# endif
9a044a43
NC
1699# ifdef PERL_EXTERNAL_GLOB
1700 " PERL_EXTERNAL_GLOB"
1701# endif
4a5df386
NC
1702# ifdef PERL_IS_MINIPERL
1703 " PERL_IS_MINIPERL"
1704# endif
1705# ifdef PERL_MALLOC_WRAP
1706 " PERL_MALLOC_WRAP"
1707# endif
1708# ifdef PERL_MEM_LOG
1709 " PERL_MEM_LOG"
1710# endif
1711# ifdef PERL_MEM_LOG_NOIMPL
1712 " PERL_MEM_LOG_NOIMPL"
1713# endif
c3cf41ec
NC
1714# ifdef PERL_PRESERVE_IVUV
1715 " PERL_PRESERVE_IVUV"
1716# endif
c051e30b
NC
1717# ifdef PERL_RELOCATABLE_INCPUSH
1718 " PERL_RELOCATABLE_INCPUSH"
1719# endif
4a5df386
NC
1720# ifdef PERL_USE_DEVEL
1721 " PERL_USE_DEVEL"
1722# endif
1723# ifdef PERL_USE_SAFE_PUTENV
1724 " PERL_USE_SAFE_PUTENV"
1725# endif
a3749cf3
NC
1726# ifdef UNLINK_ALL_VERSIONS
1727 " UNLINK_ALL_VERSIONS"
1728# endif
de618ee4
NC
1729# ifdef USE_ATTRIBUTES_FOR_PERLIO
1730 " USE_ATTRIBUTES_FOR_PERLIO"
1731# endif
4a5df386
NC
1732# ifdef USE_FAST_STDIO
1733 " USE_FAST_STDIO"
1734# endif
98548bdf
NC
1735# ifdef USE_LOCALE
1736 " USE_LOCALE"
1737# endif
98548bdf
NC
1738# ifdef USE_LOCALE_CTYPE
1739 " USE_LOCALE_CTYPE"
1740# endif
5a8d8935
NC
1741# ifdef USE_PERL_ATOF
1742 " USE_PERL_ATOF"
1743# endif
0d311fbe
NC
1744# ifdef USE_SITECUSTOMIZE
1745 " USE_SITECUSTOMIZE"
1746# endif
4a5df386
NC
1747 ;
1748 PERL_UNUSED_ARG(cv);
1749 PERL_UNUSED_ARG(items);
1750
1751 EXTEND(SP, entries);
1752
1753 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1754 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1755 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1756
1757#ifdef __DATE__
1758# ifdef __TIME__
1759 PUSHs(Perl_newSVpvn_flags(aTHX_
1760 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1761 SVs_TEMP));
1762# else
1763 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1764 SVs_TEMP));
1765# endif
1766#else
1767 PUSHs(&PL_sv_undef);
1768#endif
1769
4a5df386
NC
1770 for (i = 1; i <= local_patch_count; i++) {
1771 /* This will be an undef, if PL_localpatches[i] is NULL. */
1772 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1773 }
1774
1775 XSRETURN(entries);
1776}
1777
be71fc8f
NC
1778#define INCPUSH_UNSHIFT 0x01
1779#define INCPUSH_ADD_OLD_VERS 0x02
1780#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1781#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1782#define INCPUSH_NOT_BASEDIR 0x10
1783#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1784#define INCPUSH_ADD_SUB_DIRS \
1785 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1786
312caa8e 1787STATIC void *
14dd3ad8 1788S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1789{
27da23d5 1790 dVAR;
2f9285f8 1791 PerlIO *rsfp;
312caa8e 1792 int argc = PL_origargc;
8f42b153 1793 char **argv = PL_origargv;
e1ec3a88 1794 const char *scriptname = NULL;
312caa8e 1795 VOL bool dosearch = FALSE;
c7030b81 1796 register char c;
737c24fc 1797 bool doextract = FALSE;
bd61b366 1798 const char *cddir = NULL;
ab019eaa 1799#ifdef USE_SITECUSTOMIZE
20ef40cf 1800 bool minus_f = FALSE;
ab019eaa 1801#endif
95670bde 1802 SV *linestr_sv = NULL;
5486870f 1803 bool add_read_e_script = FALSE;
87606032 1804 U32 lex_start_flags = 0;
009d90df 1805
ca7b837b 1806 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1807
6224f72b 1808 init_main_stash();
54310121 1809
c7030b81
NC
1810 {
1811 const char *s;
6224f72b
GS
1812 for (argc--,argv++; argc > 0; argc--,argv++) {
1813 if (argv[0][0] != '-' || !argv[0][1])
1814 break;
6224f72b
GS
1815 s = argv[0]+1;
1816 reswitch:
47f56822 1817 switch ((c = *s)) {
729a02f2 1818 case 'C':
1d5472a9
GS
1819#ifndef PERL_STRICT_CR
1820 case '\r':
1821#endif
6224f72b
GS
1822 case ' ':
1823 case '0':
1824 case 'F':
1825 case 'a':
1826 case 'c':
1827 case 'd':
1828 case 'D':
1829 case 'h':
1830 case 'i':
1831 case 'l':
1832 case 'M':
1833 case 'm':
1834 case 'n':
1835 case 'p':
1836 case 's':
1837 case 'u':
1838 case 'U':
1839 case 'v':
599cee73
PM
1840 case 'W':
1841 case 'X':
6224f72b 1842 case 'w':
97bd5664 1843 if ((s = moreswitches(s)))
6224f72b
GS
1844 goto reswitch;
1845 break;
33b78306 1846
1dbad523 1847 case 't':
22f7c9c9 1848 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1849 if( !PL_tainting ) {
1850 PL_taint_warn = TRUE;
1851 PL_tainting = TRUE;
1852 }
1853 s++;
1854 goto reswitch;
6224f72b 1855 case 'T':
22f7c9c9 1856 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1857 PL_tainting = TRUE;
317ea90d 1858 PL_taint_warn = FALSE;
6224f72b
GS
1859 s++;
1860 goto reswitch;
f86702cc 1861
bc9b29db
RH
1862 case 'E':
1863 PL_minus_E = TRUE;
1864 /* FALL THROUGH */
6224f72b 1865 case 'e':
f20b2998 1866 forbid_setid('e', FALSE);
3280af22 1867 if (!PL_e_script) {
396482e1 1868 PL_e_script = newSVpvs("");
5486870f 1869 add_read_e_script = TRUE;
6224f72b
GS
1870 }
1871 if (*++s)
3280af22 1872 sv_catpv(PL_e_script, s);
6224f72b 1873 else if (argv[1]) {
3280af22 1874 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1875 argc--,argv++;
1876 }
1877 else
47f56822 1878 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1879 sv_catpvs(PL_e_script, "\n");
6224f72b 1880 break;
afe37c7d 1881
20ef40cf 1882 case 'f':
f5542d3a 1883#ifdef USE_SITECUSTOMIZE
20ef40cf 1884 minus_f = TRUE;
f5542d3a 1885#endif
20ef40cf
GA
1886 s++;
1887 goto reswitch;
1888
6224f72b 1889 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1890 forbid_setid('I', FALSE);
bd61b366 1891 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1892 argc--,argv++;
1893 }
6224f72b 1894 if (s && *s) {
0df16ed7 1895 STRLEN len = strlen(s);
55b4bc1c 1896 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1897 }
1898 else
a67e862a 1899 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1900 break;
6224f72b 1901 case 'S':
f20b2998 1902 forbid_setid('S', FALSE);
6224f72b
GS
1903 dosearch = TRUE;
1904 s++;
1905 goto reswitch;
1906 case 'V':
7edfd0ef
NC
1907 {
1908 SV *opts_prog;
1909
7edfd0ef 1910 if (*++s != ':') {
37ca4a5b 1911 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1912 }
1913 else {
1914 ++s;
1915 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1916 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1917 0, s, 0);
1918 s += strlen(s);
1919 }
37ca4a5b 1920 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1921 /* don't look for script or read stdin */
1922 scriptname = BIT_BUCKET;
1923 goto reswitch;
6224f72b 1924 }
6224f72b 1925 case 'x':
737c24fc 1926 doextract = TRUE;
6224f72b 1927 s++;
304334da 1928 if (*s)
f4c556ac 1929 cddir = s;
6224f72b
GS
1930 break;
1931 case 0:
1932 break;
1933 case '-':
1934 if (!*++s || isSPACE(*s)) {
1935 argc--,argv++;
1936 goto switch_end;
1937 }
ee8bc8b7
NC
1938 /* catch use of gnu style long options.
1939 Both of these exit immediately. */
1940 if (strEQ(s, "version"))
1941 minus_v();
1942 if (strEQ(s, "help"))
1943 usage();
6224f72b
GS
1944 s--;
1945 /* FALL THROUGH */
1946 default:
cea2e8a9 1947 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1948 }
1949 }
c7030b81
NC
1950 }
1951
6224f72b 1952 switch_end:
54310121 1953
c7030b81
NC
1954 {
1955 char *s;
1956
f675dbe5
CB
1957 if (
1958#ifndef SECURE_INTERNAL_GETENV
1959 !PL_tainting &&
1960#endif
cf756827 1961 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1962 {
74288ac8
GS
1963 while (isSPACE(*s))
1964 s++;
317ea90d 1965 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1966 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1967 PL_tainting = TRUE;
317ea90d
MS
1968 PL_taint_warn = FALSE;
1969 }
74288ac8 1970 else {
bd61b366 1971 char *popt_copy = NULL;
74288ac8 1972 while (s && *s) {
54913509 1973 const char *d;
74288ac8
GS
1974 while (isSPACE(*s))
1975 s++;
1976 if (*s == '-') {
1977 s++;
1978 if (isSPACE(*s))
1979 continue;
1980 }
4ea8f8fb 1981 d = s;
74288ac8
GS
1982 if (!*s)
1983 break;
2b622f1a 1984 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1985 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1986 while (++s && *s) {
1987 if (isSPACE(*s)) {
cf756827 1988 if (!popt_copy) {
bfa6c418
NC
1989 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1990 s = popt_copy + (s - d);
1991 d = popt_copy;
cf756827 1992 }
4ea8f8fb
MS
1993 *s++ = '\0';
1994 break;
1995 }
1996 }
1c4db469 1997 if (*d == 't') {
317ea90d
MS
1998 if( !PL_tainting ) {
1999 PL_taint_warn = TRUE;
2000 PL_tainting = TRUE;
2001 }
1c4db469 2002 } else {
97bd5664 2003 moreswitches(d);
1c4db469 2004 }
6224f72b 2005 }
6224f72b
GS
2006 }
2007 }
c7030b81 2008 }
a0d0e21e 2009
c29067d7
CH
2010 /* Set $^X early so that it can be used for relocatable paths in @INC */
2011 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2012 assert (!PL_tainted);
2013 TAINT;
2014 S_set_caret_X(aTHX);
2015 TAINT_NOT;
2016
43c0c913 2017#if defined(USE_SITECUSTOMIZE)
20ef40cf 2018 if (!minus_f) {
43c0c913 2019 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2020 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2021 ie a q() operator with a NUL byte as a the delimiter. This avoids
2022 problems with pathnames containing (say) ' */
43c0c913
NC
2023# ifdef PERL_IS_MINIPERL
2024 AV *const inc = GvAV(PL_incgv);
2025 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2026
2027 if (inc0) {
2028 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2029 Perl_newSVpvf(aTHX_
fc81b718
NC
2030 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2031 0, *inc0, 0,
2032 0, *inc0, 0));
43c0c913
NC
2033 }
2034# else
2035 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2036 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2037 if (raw_sitelib) {
2038 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2039 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2040 INCPUSH_CAN_RELOCATE);
2041 const char *const sitelib = SvPVX(sitelib_sv);
2042 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2043 Perl_newSVpvf(aTHX_
2044 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2045 0, sitelib, 0,
2046 0, sitelib, 0));
2047 assert (SvREFCNT(sitelib_sv) == 1);
2048 SvREFCNT_dec(sitelib_sv);
2049 }
43c0c913 2050# endif
20ef40cf
GA
2051 }
2052#endif
2053
6224f72b
GS
2054 if (!scriptname)
2055 scriptname = argv[0];
3280af22 2056 if (PL_e_script) {
6224f72b
GS
2057 argc++,argv--;
2058 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2059 }
bd61b366 2060 else if (scriptname == NULL) {
6224f72b
GS
2061#ifdef MSDOS
2062 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2063 moreswitches("h");
6224f72b
GS
2064#endif
2065 scriptname = "-";
2066 }
2067
b7975bdd 2068 assert (!PL_tainted);
2cace6ac 2069 init_perllib();
6224f72b 2070
a52eba0e 2071 {
f20b2998 2072 bool suidscript = FALSE;
829372d3 2073
8d113837 2074 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2075 if (!rsfp) {
2076 rsfp = PerlIO_stdin();
87606032 2077 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2078 }
6224f72b 2079
b24bc095 2080 validate_suid(rsfp);
6224f72b 2081
64ca3a65 2082#ifndef PERL_MICRO
a52eba0e
NC
2083# if defined(SIGCHLD) || defined(SIGCLD)
2084 {
2085# ifndef SIGCHLD
2086# define SIGCHLD SIGCLD
2087# endif
2088 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2089 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2090 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2091 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2092 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2093 }
0b5b802d 2094 }
a52eba0e 2095# endif
64ca3a65 2096#endif
0b5b802d 2097
737c24fc 2098 if (doextract) {
faef540c 2099
f20b2998 2100 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2101 setuid scripts. */
2102 forbid_setid('x', suidscript);
f20b2998 2103 /* Hence you can't get here if suidscript is true */
faef540c 2104
95670bde
NC
2105 linestr_sv = newSV_type(SVt_PV);
2106 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2107 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2108 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2109 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2110 }
f4c556ac 2111 }
6224f72b 2112
ea726b52 2113 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2114 CvUNIQUE_on(PL_compcv);
2115
dd2155a4 2116 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2117
dd69841b
BB
2118 PL_isarev = newHV();
2119
0c4f7ff0 2120 boot_core_PerlIO();
6224f72b 2121 boot_core_UNIVERSAL();
e1a479c5 2122 boot_core_mro();
4a5df386 2123 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2124
2125 if (xsinit)
acfe0abc 2126 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2127#ifndef PERL_MICRO
d0d72822 2128#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2129 init_os_extras();
6224f72b 2130#endif
64ca3a65 2131#endif
6224f72b 2132
29209bc5 2133#ifdef USE_SOCKS
1b9c9cf5
DH
2134# ifdef HAS_SOCKS5_INIT
2135 socks5_init(argv[0]);
2136# else
29209bc5 2137 SOCKSinit(argv[0]);
1b9c9cf5 2138# endif
ac27b0f5 2139#endif
29209bc5 2140
6224f72b
GS
2141 init_predump_symbols();
2142 /* init_postdump_symbols not currently designed to be called */
2143 /* more than once (ENV isn't cleared first, for example) */
2144 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2145 if (!PL_do_undump)
6224f72b
GS
2146 init_postdump_symbols(argc,argv,env);
2147
27da23d5
JH
2148 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2149 * or explicitly in some platforms.
085a54d9 2150 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2151 * look like the user wants to use UTF-8. */
a0fd4948 2152#if defined(__SYMBIAN32__)
27da23d5
JH
2153 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2154#endif
e27b5b51 2155# ifndef PERL_IS_MINIPERL
06e66572
JH
2156 if (PL_unicode) {
2157 /* Requires init_predump_symbols(). */
a05d7ebb 2158 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2159 IO* io;
2160 PerlIO* fp;
2161 SV* sv;
2162
a05d7ebb 2163 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2164 * and the default open disciplines. */
a05d7ebb
JH
2165 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2166 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2167 (fp = IoIFP(io)))
2168 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2169 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2170 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2171 (fp = IoOFP(io)))
2172 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2173 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2174 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2175 (fp = IoOFP(io)))
2176 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2177 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2178 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2179 SVt_PV)))) {
a05d7ebb
JH
2180 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2181 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2182 if (in) {
2183 if (out)
76f68e9b 2184 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2185 else
76f68e9b 2186 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2187 }
2188 else if (out)
76f68e9b 2189 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2190 SvSETMAGIC(sv);
2191 }
b310b053
JH
2192 }
2193 }
e27b5b51 2194#endif
b310b053 2195
c7030b81
NC
2196 {
2197 const char *s;
4ffa73a3
JH
2198 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2199 if (strEQ(s, "unsafe"))
2200 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2201 else if (strEQ(s, "safe"))
2202 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2203 else
2204 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2205 }
c7030b81 2206 }
4ffa73a3 2207
81d86705 2208#ifdef PERL_MAD
c7030b81
NC
2209 {
2210 const char *s;
81d86705
NC
2211 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2212 PL_madskills = 1;
2213 PL_minus_c = 1;
2214 if (!s || !s[0])
2215 PL_xmlfp = PerlIO_stdout();
2216 else {
2217 PL_xmlfp = PerlIO_open(s, "w");
2218 if (!PL_xmlfp)
2219 Perl_croak(aTHX_ "Can't open %s", s);
2220 }
1a9a51d4 2221 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2222 }
c7030b81
NC
2223 }
2224
2225 {
2226 const char *s;
81d86705
NC
2227 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2228 PL_madskills = atoi(s);
1a9a51d4 2229 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2230 }
c7030b81 2231 }
81d86705
NC
2232#endif
2233
87606032 2234 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2235 if(linestr_sv)
2236 SvREFCNT_dec(linestr_sv);
2237
219f7226 2238 PL_subname = newSVpvs("main");
6224f72b 2239
5486870f
DM
2240 if (add_read_e_script)
2241 filter_add(read_e_script, NULL);
2242
6224f72b
GS
2243 /* now parse the script */
2244
93189314 2245 SETERRNO(0,SS_NORMAL);
28ac2b49 2246 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2247 if (PL_minus_c)
cea2e8a9 2248 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2249 else {
cea2e8a9 2250 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2251 PL_origfilename);
6224f72b
GS
2252 }
2253 }
57843af0 2254 CopLINE_set(PL_curcop, 0);
03d9f026 2255 SET_CURSTASH(PL_defstash);
3280af22
NIS
2256 if (PL_e_script) {
2257 SvREFCNT_dec(PL_e_script);
a0714e2c 2258 PL_e_script = NULL;
6224f72b
GS
2259 }
2260
3280af22 2261 if (PL_do_undump)
6224f72b
GS
2262 my_unexec();
2263
57843af0
GS
2264 if (isWARN_ONCE) {
2265 SAVECOPFILE(PL_curcop);
2266 SAVECOPLINE(PL_curcop);
3280af22 2267 gv_check(PL_defstash);
57843af0 2268 }
6224f72b
GS
2269
2270 LEAVE;
2271 FREETMPS;
2272
2273#ifdef MYMALLOC
f6a607bc
RGS
2274 {
2275 const char *s;
6224f72b
GS
2276 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2277 dump_mstats("after compilation:");
f6a607bc 2278 }
6224f72b
GS
2279#endif
2280
2281 ENTER;
febb3a6d 2282 PL_restartjmpenv = NULL;
3280af22 2283 PL_restartop = 0;
312caa8e 2284 return NULL;
6224f72b
GS
2285}
2286
954c1994
GS
2287/*
2288=for apidoc perl_run
2289
2290Tells a Perl interpreter to run. See L<perlembed>.
2291
2292=cut
2293*/
2294
6224f72b 2295int
0cb96387 2296perl_run(pTHXx)
6224f72b 2297{
97aff369 2298 dVAR;
6224f72b 2299 I32 oldscope;
14dd3ad8 2300 int ret = 0;
db36c5a1 2301 dJMPENV;
6224f72b 2302
7918f24d
NC
2303 PERL_ARGS_ASSERT_PERL_RUN;
2304#ifndef MULTIPLICITY
ed6c66dd 2305 PERL_UNUSED_ARG(my_perl);
7918f24d 2306#endif
9d4ba2ae 2307
3280af22 2308 oldscope = PL_scopestack_ix;
96e176bf
CL
2309#ifdef VMS
2310 VMSISH_HUSHED = 0;
2311#endif
6224f72b 2312
14dd3ad8 2313 JMPENV_PUSH(ret);
6224f72b
GS
2314 switch (ret) {
2315 case 1:
2316 cxstack_ix = -1; /* start context stack again */
312caa8e 2317 goto redo_body;
14dd3ad8 2318 case 0: /* normal completion */
14dd3ad8
GS
2319 redo_body:
2320 run_body(oldscope);
14dd3ad8
GS
2321 /* FALL THROUGH */
2322 case 2: /* my_exit() */
3280af22 2323 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2324 LEAVE;
2325 FREETMPS;
03d9f026 2326 SET_CURSTASH(PL_defstash);
3a1ee7e8 2327 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2328 PL_endav && !PL_minus_c) {
ca7b837b 2329 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2330 call_list(oldscope, PL_endav);
9ebf26ad 2331 }
6224f72b
GS
2332#ifdef MYMALLOC
2333 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2334 dump_mstats("after execution: ");
2335#endif
37038d91 2336 ret = STATUS_EXIT;
14dd3ad8 2337 break;
6224f72b 2338 case 3:
312caa8e
CS
2339 if (PL_restartop) {
2340 POPSTACK_TO(PL_mainstack);
2341 goto redo_body;
6224f72b 2342 }
5637ef5b 2343 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2344 FREETMPS;
14dd3ad8
GS
2345 ret = 1;
2346 break;
6224f72b
GS
2347 }
2348
14dd3ad8
GS
2349 JMPENV_POP;
2350 return ret;
312caa8e
CS
2351}
2352
dd374669 2353STATIC void
14dd3ad8
GS
2354S_run_body(pTHX_ I32 oldscope)
2355{
97aff369 2356 dVAR;
6224f72b 2357 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2358 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2359
3280af22 2360 if (!PL_restartop) {
81d86705
NC
2361#ifdef PERL_MAD
2362 if (PL_xmlfp) {
2363 xmldump_all();
2364 exit(0); /* less likely to core dump than my_exit(0) */
2365 }
2366#endif
cf2782cd 2367#ifdef DEBUGGING
f0e3f042
CS
2368 if (DEBUG_x_TEST || DEBUG_B_TEST)
2369 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2370 if (!DEBUG_q_TEST)
2371 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2372#endif
6224f72b 2373
3280af22 2374 if (PL_minus_c) {
bf49b057 2375 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2376 my_exit(0);
2377 }
3280af22 2378 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2379 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2380 if (PL_initav) {
ca7b837b 2381 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2382 call_list(oldscope, PL_initav);
9ebf26ad 2383 }
f1fac472
NC
2384#ifdef PERL_DEBUG_READONLY_OPS
2385 Perl_pending_Slabs_to_ro(aTHX);
2386#endif
6224f72b
GS
2387 }
2388
2389 /* do it */
2390
ca7b837b 2391 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2392
3280af22 2393 if (PL_restartop) {
febb3a6d 2394 PL_restartjmpenv = NULL;
533c011a 2395 PL_op = PL_restartop;
3280af22 2396 PL_restartop = 0;
cea2e8a9 2397 CALLRUNOPS(aTHX);
6224f72b 2398 }
3280af22
NIS
2399 else if (PL_main_start) {
2400 CvDEPTH(PL_main_cv) = 1;
533c011a 2401 PL_op = PL_main_start;
cea2e8a9 2402 CALLRUNOPS(aTHX);
6224f72b 2403 }
f6b3007c
JH
2404 my_exit(0);
2405 /* NOTREACHED */
6224f72b
GS
2406}
2407
954c1994 2408/*
ccfc67b7
JH
2409=head1 SV Manipulation Functions
2410
954c1994
GS
2411=for apidoc p||get_sv
2412
64ace3f8
NC
2413Returns the SV of the specified Perl scalar. C<flags> are passed to
2414C<gv_fetchpv>. If C<GV_ADD> is set and the
2415Perl variable does not exist then it will be created. If C<flags> is zero
2416and the variable does not exist then NULL is returned.
954c1994
GS
2417
2418=cut
2419*/
2420
6224f72b 2421SV*
64ace3f8 2422Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2423{
2424 GV *gv;
7918f24d
NC
2425
2426 PERL_ARGS_ASSERT_GET_SV;
2427
64ace3f8 2428 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2429 if (gv)
2430 return GvSV(gv);
a0714e2c 2431 return NULL;
6224f72b
GS
2432}
2433
954c1994 2434/*
ccfc67b7
JH
2435=head1 Array Manipulation Functions
2436
954c1994
GS
2437=for apidoc p||get_av
2438
f0b90de1
SF
2439Returns the AV of the specified Perl global or package array with the given
2440name (so it won't work on lexical variables). C<flags> are passed
2441to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2442Perl variable does not exist then it will be created. If C<flags> is zero
2443and the variable does not exist then NULL is returned.
954c1994 2444
f0b90de1
SF
2445Perl equivalent: C<@{"$name"}>.
2446
954c1994
GS
2447=cut
2448*/
2449
6224f72b 2450AV*
cbfd0a87 2451Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2452{
cbfd0a87 2453 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2454
2455 PERL_ARGS_ASSERT_GET_AV;
2456
cbfd0a87 2457 if (flags)
6224f72b
GS
2458 return GvAVn(gv);
2459 if (gv)
2460 return GvAV(gv);
7d49f689 2461 return NULL;
6224f72b
GS
2462}
2463
954c1994 2464/*
ccfc67b7
JH
2465=head1 Hash Manipulation Functions
2466
954c1994
GS
2467=for apidoc p||get_hv
2468
6673a63c
NC
2469Returns the HV of the specified Perl hash. C<flags> are passed to
2470C<gv_fetchpv>. If C<GV_ADD> is set and the
2471Perl variable does not exist then it will be created. If C<flags> is zero
2472and the variable does not exist then NULL is returned.
954c1994
GS
2473
2474=cut
2475*/
2476
6224f72b 2477HV*
6673a63c 2478Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2479{
6673a63c 2480 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2481
2482 PERL_ARGS_ASSERT_GET_HV;
2483
6673a63c 2484 if (flags)
a0d0e21e
LW
2485 return GvHVn(gv);
2486 if (gv)
2487 return GvHV(gv);
5c284bb0 2488 return NULL;
a0d0e21e
LW
2489}
2490
954c1994 2491/*
ccfc67b7
JH
2492=head1 CV Manipulation Functions
2493
780a5241
NC
2494=for apidoc p||get_cvn_flags
2495
2496Returns the CV of the specified Perl subroutine. C<flags> are passed to
2497C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2498exist then it will be declared (which has the same effect as saying
2499C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2500then NULL is returned.
2501
954c1994
GS
2502=for apidoc p||get_cv
2503
780a5241 2504Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2505
2506=cut
2507*/
2508
a0d0e21e 2509CV*
780a5241 2510Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2511{
780a5241 2512 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2513 /* XXX this is probably not what they think they're getting.
2514 * It has the same effect as "sub name;", i.e. just a forward
2515 * declaration! */
7918f24d
NC
2516
2517 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2518
780a5241 2519 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2520 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2521 return newSUB(start_subparse(FALSE, 0),
780a5241 2522 newSVOP(OP_CONST, 0, sv),
5f66b61c 2523 NULL, NULL);
780a5241 2524 }
a0d0e21e 2525 if (gv)
8ebc5c01 2526 return GvCVu(gv);
601f1833 2527 return NULL;
a0d0e21e
LW
2528}
2529
2c67934f
NC
2530/* Nothing in core calls this now, but we can't replace it with a macro and
2531 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2532CV*
2533Perl_get_cv(pTHX_ const char *name, I32 flags)
2534{
7918f24d
NC
2535 PERL_ARGS_ASSERT_GET_CV;
2536
780a5241
NC
2537 return get_cvn_flags(name, strlen(name), flags);
2538}
2539
79072805
LW
2540/* Be sure to refetch the stack pointer after calling these routines. */
2541
954c1994 2542/*
ccfc67b7
JH
2543
2544=head1 Callback Functions
2545
954c1994
GS
2546=for apidoc p||call_argv
2547
f0b90de1
SF
2548Performs a callback to the specified named and package-scoped Perl subroutine
2549with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2550
2551Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2552
2553=cut
2554*/
2555
a0d0e21e 2556I32
8f42b153 2557Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2558
8ac85365
NIS
2559 /* See G_* flags in cop.h */
2560 /* null terminated arg list */
8990e307 2561{
97aff369 2562 dVAR;
a0d0e21e 2563 dSP;
8990e307 2564
7918f24d
NC
2565 PERL_ARGS_ASSERT_CALL_ARGV;
2566
924508f0 2567 PUSHMARK(SP);
a0d0e21e 2568 if (argv) {
8990e307 2569 while (*argv) {
6e449a3a 2570 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2571 argv++;
2572 }
a0d0e21e 2573 PUTBACK;
8990e307 2574 }
864dbfa3 2575 return call_pv(sub_name, flags);
8990e307
LW
2576}
2577
954c1994
GS
2578/*
2579=for apidoc p||call_pv
2580
2581Performs a callback to the specified Perl sub. See L<perlcall>.
2582
2583=cut
2584*/
2585
a0d0e21e 2586I32
864dbfa3 2587Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2588 /* name of the subroutine */
2589 /* See G_* flags in cop.h */
a0d0e21e 2590{
7918f24d
NC
2591 PERL_ARGS_ASSERT_CALL_PV;
2592
0da0e728 2593 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2594}
2595
954c1994
GS
2596/*
2597=for apidoc p||call_method
2598
2599Performs a callback to the specified Perl method. The blessed object must
2600be on the stack. See L<perlcall>.
2601
2602=cut
2603*/
2604
a0d0e21e 2605I32
864dbfa3 2606Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2607 /* name of the subroutine */
2608 /* See G_* flags in cop.h */
a0d0e21e 2609{
46ca9bac 2610 STRLEN len;
7918f24d
NC
2611 PERL_ARGS_ASSERT_CALL_METHOD;
2612
46ca9bac 2613 len = strlen(methname);
2614
2615 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2616 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2617}
2618
2619/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2620/*
2621=for apidoc p||call_sv
2622
2623Performs a callback to the Perl sub whose name is in the SV. See
2624L<perlcall>.
2625
2626=cut
2627*/
2628
a0d0e21e 2629I32
001d637e 2630Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2631 /* See G_* flags in cop.h */
a0d0e21e 2632{
27da23d5 2633 dVAR; dSP;
a0d0e21e 2634 LOGOP myop; /* fake syntax tree node */
968b3946 2635 UNOP method_op;
aa689395 2636 I32 oldmark;
8ea43dc8 2637 VOL I32 retval = 0;
a0d0e21e 2638 I32 oldscope;
54310121 2639 bool oldcatch = CATCH_GET;
6224f72b 2640 int ret;
c4420975 2641 OP* const oldop = PL_op;
db36c5a1 2642 dJMPENV;
1e422769 2643
7918f24d
NC
2644 PERL_ARGS_ASSERT_CALL_SV;
2645
a0d0e21e
LW
2646 if (flags & G_DISCARD) {
2647 ENTER;
2648 SAVETMPS;
2649 }
2f8edad0
NC
2650 if (!(flags & G_WANT)) {
2651 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2652 */
2653 flags |= G_SCALAR;
2654 }
a0d0e21e 2655
aa689395 2656 Zero(&myop, 1, LOGOP);
5f66b61c 2657 myop.op_next = NULL;
f51d4af5 2658 if (!(flags & G_NOARGS))
aa689395 2659 myop.op_flags |= OPf_STACKED;
4f911530 2660 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2661 SAVEOP();
533c011a 2662 PL_op = (OP*)&myop;
aa689395 2663
3280af22
NIS
2664 EXTEND(PL_stack_sp, 1);
2665 *++PL_stack_sp = sv;
aa689395 2666 oldmark = TOPMARK;
3280af22 2667 oldscope = PL_scopestack_ix;
a0d0e21e 2668
3280af22 2669 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2670 /* Handle first BEGIN of -d. */
3280af22 2671 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2672 /* Try harder, since this may have been a sighandler, thus
2673 * curstash may be meaningless. */
ea726b52 2674 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2675 && !(flags & G_NODEBUG))
533c011a 2676 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2677
968b3946
GS
2678 if (flags & G_METHOD) {
2679 Zero(&method_op, 1, UNOP);
2680 method_op.op_next = PL_op;
2681 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2682 method_op.op_type = OP_METHOD;
968b3946 2683 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2684 myop.op_type = OP_ENTERSUB;
f39d0b86 2685 PL_op = (OP*)&method_op;
968b3946
GS
2686 }
2687
312caa8e 2688 if (!(flags & G_EVAL)) {
0cdb2077 2689 CATCH_SET(TRUE);
d6f07c05 2690 CALL_BODY_SUB((OP*)&myop);
312caa8e 2691 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2692 CATCH_SET(oldcatch);
312caa8e
CS
2693 }
2694 else {
d78bda3d 2695 myop.op_other = (OP*)&myop;
3280af22 2696 PL_markstack_ptr--;
edb2152a 2697 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2698 PL_markstack_ptr++;
a0d0e21e 2699
14dd3ad8 2700 JMPENV_PUSH(ret);
edb2152a 2701
6224f72b
GS
2702 switch (ret) {
2703 case 0:
14dd3ad8 2704 redo_body:
d6f07c05 2705 CALL_BODY_SUB((OP*)&myop);
312caa8e 2706 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2707 if (!(flags & G_KEEPERR)) {
ab69dbc2 2708 CLEAR_ERRSV();
8433848b 2709 }
a0d0e21e 2710 break;
6224f72b 2711 case 1:
f86702cc 2712 STATUS_ALL_FAILURE;
a0d0e21e 2713 /* FALL THROUGH */
6224f72b 2714 case 2:
a0d0e21e 2715 /* my_exit() was called */
03d9f026 2716 SET_CURSTASH(PL_defstash);
a0d0e21e 2717 FREETMPS;
14dd3ad8 2718 JMPENV_POP;
f86702cc 2719 my_exit_jump();
a0d0e21e 2720 /* NOTREACHED */
6224f72b 2721 case 3:
3280af22 2722 if (PL_restartop) {
febb3a6d 2723 PL_restartjmpenv = NULL;
533c011a 2724 PL_op = PL_restartop;
3280af22 2725 PL_restartop = 0;
312caa8e 2726 goto redo_body;
a0d0e21e 2727 }
3280af22 2728 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2729 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2730 retval = 0;
2731 else {
2732 retval = 1;
3280af22 2733 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2734 }
312caa8e 2735 break;
a0d0e21e 2736 }
a0d0e21e 2737
edb2152a
NC
2738 if (PL_scopestack_ix > oldscope)
2739 delete_eval_scope();
14dd3ad8 2740 JMPENV_POP;
a0d0e21e 2741 }
1e422769 2742
a0d0e21e 2743 if (flags & G_DISCARD) {
3280af22 2744 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2745 retval = 0;
2746 FREETMPS;
2747 LEAVE;
2748 }
533c011a 2749 PL_op = oldop;
a0d0e21e
LW
2750 return retval;
2751}
2752
6e72f9df 2753/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2754
954c1994
GS
2755/*
2756=for apidoc p||eval_sv
2757
be064c4a
DM
2758Tells Perl to C<eval> the string in the SV. It supports the same flags
2759as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2760
2761=cut
2762*/
2763
a0d0e21e 2764I32
864dbfa3 2765Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2766
8ac85365 2767 /* See G_* flags in cop.h */
a0d0e21e 2768{
97aff369 2769 dVAR;
924508f0 2770 dSP;
a0d0e21e 2771 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2772 VOL I32 oldmark = SP - PL_stack_base;
2773 VOL I32 retval = 0;
6224f72b 2774 int ret;
c4420975 2775 OP* const oldop = PL_op;
db36c5a1 2776 dJMPENV;
84902520 2777
7918f24d
NC
2778 PERL_ARGS_ASSERT_EVAL_SV;
2779
4633a7c4
LW
2780 if (flags & G_DISCARD) {
2781 ENTER;
2782 SAVETMPS;
2783 }
2784
462e5cf6 2785 SAVEOP();
533c011a
NIS
2786 PL_op = (OP*)&myop;
2787 Zero(PL_op, 1, UNOP);
3280af22
NIS
2788 EXTEND(PL_stack_sp, 1);
2789 *++PL_stack_sp = sv;
79072805 2790
4633a7c4
LW
2791 if (!(flags & G_NOARGS))
2792 myop.op_flags = OPf_STACKED;
5f66b61c 2793 myop.op_next = NULL;
6e72f9df 2794 myop.op_type = OP_ENTEREVAL;
4f911530 2795 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2796 if (flags & G_KEEPERR)
2797 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2798
dedbcade
DM
2799 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2800 * before a PUSHEVAL, which corrupts the stack after a croak */
2801 TAINT_PROPER("eval_sv()");
2802
14dd3ad8 2803 JMPENV_PUSH(ret);
6224f72b
GS
2804 switch (ret) {
2805 case 0:
14dd3ad8 2806 redo_body:
2ba65d5f
DM
2807 if (PL_op == (OP*)(&myop)) {
2808 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2809 if (!PL_op)
2810 goto fail; /* failed in compilation */
2811 }
4aca2f62 2812 CALLRUNOPS(aTHX);
312caa8e 2813 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2814 if (!(flags & G_KEEPERR)) {
ab69dbc2 2815 CLEAR_ERRSV();
8433848b 2816 }
4633a7c4 2817 break;
6224f72b 2818 case 1:
f86702cc 2819 STATUS_ALL_FAILURE;
4633a7c4 2820 /* FALL THROUGH */
6224f72b 2821 case 2:
4633a7c4 2822 /* my_exit() was called */
03d9f026 2823 SET_CURSTASH(PL_defstash);
4633a7c4 2824 FREETMPS;
14dd3ad8 2825 JMPENV_POP;
f86702cc 2826 my_exit_jump();
4633a7c4 2827 /* NOTREACHED */
6224f72b 2828 case 3:
3280af22 2829 if (PL_restartop) {
febb3a6d 2830 PL_restartjmpenv = NULL;
533c011a 2831 PL_op = PL_restartop;
3280af22 2832 PL_restartop = 0;
312caa8e 2833 goto redo_body;
4633a7c4 2834 }
4aca2f62 2835 fail:
3280af22 2836 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2837 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2838 retval = 0;
2839 else {
2840 retval = 1;
3280af22 2841 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2842 }
312caa8e 2843 break;
4633a7c4
LW
2844 }
2845
14dd3ad8 2846 JMPENV_POP;
4633a7c4 2847 if (flags & G_DISCARD) {
3280af22 2848 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2849 retval = 0;
2850 FREETMPS;
2851 LEAVE;
2852 }
533c011a 2853 PL_op = oldop;
4633a7c4
LW
2854 return retval;
2855}
2856
954c1994
GS
2857/*
2858=for apidoc p||eval_pv
2859
2860Tells Perl to C<eval> the given string and return an SV* result.
2861
2862=cut
2863*/
2864
137443ea 2865SV*
864dbfa3 2866Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2867{
97aff369 2868 dVAR;
137443ea
PP
2869 dSP;
2870 SV* sv = newSVpv(p, 0);
2871
7918f24d
NC
2872 PERL_ARGS_ASSERT_EVAL_PV;
2873
864dbfa3 2874 eval_sv(sv, G_SCALAR);
137443ea
PP
2875 SvREFCNT_dec(sv);
2876
2877 SPAGAIN;
2878 sv = POPs;
2879 PUTBACK;
2880
2d8e6c8d 2881 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2882 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2883 }
137443ea
PP
2884
2885 return sv;
2886}
2887
4633a7c4
LW
2888/* Require a module. */
2889
954c1994 2890/*
ccfc67b7
JH
2891=head1 Embedding Functions
2892
954c1994
GS
2893=for apidoc p||require_pv
2894
7d3fb230
BS
2895Tells Perl to C<require> the file named by the string argument. It is
2896analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2897implemented that way; consider using load_module instead.
954c1994 2898
7d3fb230 2899=cut */
954c1994 2900
4633a7c4 2901void
864dbfa3 2902Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2903{
97aff369 2904 dVAR;
d3acc0f7 2905 dSP;
97aff369 2906 SV* sv;
7918f24d
NC
2907
2908 PERL_ARGS_ASSERT_REQUIRE_PV;
2909
e788e7d3 2910 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2911 PUTBACK;
be41e5d9
NC
2912 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2913 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2914 SPAGAIN;
2915 POPSTACK;
79072805
LW
2916}
2917
76e3520e 2918STATIC void
b6f82619 2919S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2920{
ab821d7f 2921 /* This message really ought to be max 23 lines.
75c72d73 2922 * Removed -h because the user already knows that option. Others? */
fb73857a 2923
1566c39d
NC
2924 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2925 minimum of 509 character string literals. */
27da23d5 2926 static const char * const usage_msg[] = {
1566c39d
NC
2927" -0[octal] specify record separator (\\0, if no argument)\n"
2928" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2929" -C[number/list] enables the listed Unicode features\n"
2930" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2931" -d[:debugger] run program under debugger\n"
2932" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2933" -e program one line of program (several -e's allowed, omit programfile)\n"
2934" -E program like -e, but enables all optional features\n"
2935" -f don't do $sitelib/sitecustomize.pl at startup\n"
2936" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2937" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2938" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2939" -l[octal] enable line ending processing, specifies line terminator\n"
2940" -[mM][-]module execute \"use/no module...\" before executing program\n"
2941" -n assume \"while (<>) { ... }\" loop around program\n"
2942" -p assume loop like -n but print line also, like sed\n"
2943" -s enable rudimentary parsing for switches after programfile\n"
2944" -S look for programfile using PATH environment variable\n",
2945" -t enable tainting warnings\n"
2946" -T enable tainting checks\n"
2947" -u dump core after parsing program\n"
2948" -U allow unsafe operations\n"
2949" -v print version, patchlevel and license\n"
2950" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2951" -w enable many useful warnings\n"
1566c39d
NC
2952" -W enable all warnings\n"
2953" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2954" -X disable all warnings\n"
2955" \n"
2956"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2957NULL
2958};
27da23d5 2959 const char * const *p = usage_msg;
1566c39d 2960 PerlIO *out = PerlIO_stdout();
fb73857a 2961
1566c39d
NC
2962 PerlIO_printf(out,
2963 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2964 PL_origargv[0]);
fb73857a 2965 while (*p)
1566c39d 2966 PerlIO_puts(out, *p++);
b6f82619 2967 my_exit(0);
4633a7c4
LW
2968}
2969
b4ab917c
DM
2970/* convert a string of -D options (or digits) into an int.
2971 * sets *s to point to the char after the options */
2972
2973#ifdef DEBUGGING
2974int
e1ec3a88 2975Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2976{
27da23d5 2977 static const char * const usage_msgd[] = {
651b8f1a
NC
2978 " Debugging flag values: (see also -d)\n"
2979 " p Tokenizing and parsing (with v, displays parse stack)\n"
2980 " s Stack snapshots (with v, displays all stacks)\n"
2981 " l Context (loop) stack processing\n"
2982 " t Trace execution\n"
2983 " o Method and overloading resolution\n",
2984 " c String/numeric conversions\n"
2985 " P Print profiling info, source file input state\n"
2986 " m Memory and SV allocation\n"
2987 " f Format processing\n"
2988 " r Regular expression parsing and execution\n"
2989 " x Syntax tree dump\n",
2990 " u Tainting checks\n"
2991 " H Hash dump -- usurps values()\n"
2992 " X Scratchpad allocation\n"
2993 " D Cleaning up\n"
2994 " T Tokenising\n"
2995 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2996 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2997 " v Verbose: use in conjunction with other flags\n"
2998 " C Copy On Write\n"
2999 " A Consistency checks on internal structures\n"
3000 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3001 " M trace smart match resolution\n"
3002 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3003 NULL
3004 };
b4ab917c 3005 int i = 0;
7918f24d
NC
3006
3007 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3008
b4ab917c
DM
3009 if (isALPHA(**s)) {
3010 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3011 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3012
3013 for (; isALNUM(**s); (*s)++) {
c4420975 3014 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3015 if (d)
3016 i |= 1 << (d - debopts);
3017 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3018 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3019 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3020 }
3021 }
e6e64d9b 3022 else if (isDIGIT(**s)) {
b4ab917c
DM
3023 i = atoi(*s);
3024 for (; isALNUM(**s); (*s)++) ;
3025 }
ddcf8bc1 3026 else if (givehelp) {
06e869a4 3027 const char *const *p = usage_msgd;
651b8f1a 3028 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3029 }
b4ab917c
DM
3030# ifdef EBCDIC
3031 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3032 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3033 "-Dp not implemented on this platform\n");
3034# endif
3035 return i;
3036}
3037#endif
3038
79072805
LW
3039/* This routine handles any switches that can be given during run */
3040
c7030b81
NC
3041const char *
3042Perl_moreswitches(pTHX_ const char *s)
79072805 3043{
27da23d5 3044 dVAR;
84c133a0 3045 UV rschar;
0544e6df 3046 const char option = *s; /* used to remember option in -m/-M code */
79072805 3047
7918f24d
NC
3048 PERL_ARGS_ASSERT_MORESWITCHES;
3049
79072805
LW
3050 switch (*s) {
3051 case '0':
a863c7d1 3052 {
f2095865 3053 I32 flags = 0;
a3b680e6 3054 STRLEN numlen;
f2095865
JH
3055
3056 SvREFCNT_dec(PL_rs);
3057 if (s[1] == 'x' && s[2]) {
a3b680e6 3058 const char *e = s+=2;
f2095865
JH
3059 U8 *tmps;
3060
a3b680e6
AL
3061 while (*e)
3062 e++;
f2095865
JH
3063 numlen = e - s;
3064 flags = PERL_SCAN_SILENT_ILLDIGIT;
3065 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3066 if (s + numlen < e) {
3067 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3068 numlen = 0;
3069 s--;
3070 }
396482e1 3071 PL_rs = newSVpvs("");
c5661c80 3072 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3073 tmps = (U8*)SvPVX(PL_rs);
3074 uvchr_to_utf8(tmps, rschar);
3075 SvCUR_set(PL_rs, UNISKIP(rschar));
3076 SvUTF8_on(PL_rs);
3077 }
3078 else {
3079 numlen = 4;
3080 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3081 if (rschar & ~((U8)~0))
3082 PL_rs = &PL_sv_undef;
3083 else if (!rschar && numlen >= 2)
396482e1 3084 PL_rs = newSVpvs("");
f2095865
JH
3085 else {
3086 char ch = (char)rschar;
3087 PL_rs = newSVpvn(&ch, 1);
3088 }
3089 }
64ace3f8 3090 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3091 return s + numlen;
a863c7d1 3092 }
46487f74 3093 case 'C':
a05d7ebb 3094 s++;
dd374669 3095 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3096 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3097 PL_utf8cache = -1;
46487f74 3098 return s;
2304df62 3099 case 'F':
3280af22 3100 PL_minus_F = TRUE;
ebce5377
RGS
3101 PL_splitstr = ++s;
3102 while (*s && !isSPACE(*s)) ++s;
e49e380e 3103 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3104 return s;
79072805 3105 case 'a':
3280af22 3106 PL_minus_a = TRUE;
79072805
LW
3107 s++;
3108 return s;
3109 case 'c':
3280af22 3110 PL_minus_c = TRUE;
79072805
LW
3111 s++;
3112 return s;
3113 case 'd':
f20b2998 3114 forbid_setid('d', FALSE);
4633a7c4 3115 s++;
2cbb2ee1
RGS
3116
3117 /* -dt indicates to the debugger that threads will be used */
3118 if (*s == 't' && !isALNUM(s[1])) {
3119 ++s;
3120 my_setenv("PERL5DB_THREADED", "1");
3121 }
3122
70c94a19
RR
3123 /* The following permits -d:Mod to accepts arguments following an =
3124 in the fashion that -MSome::Mod does. */
3125 if (*s == ':' || *s == '=') {
b19934fb
NC
3126 const char *start;
3127 const char *end;
3128 SV *sv;
3129
3130 if (*++s == '-') {
3131 ++s;
3132 sv = newSVpvs("no Devel::");
3133 } else {
3134 sv = newSVpvs("use Devel::");
3135 }
3136
3137 start = s;
3138 end = s + strlen(s);
f85893a1 3139
b19934fb 3140 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3141 while(isALNUM(*s) || *s==':') ++s;
3142 if (*s != '=')
f85893a1 3143 sv_catpvn(sv, start, end - start);
70c94a19
RR
3144 else {
3145 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3146 /* Don't use NUL as q// delimiter here, this string goes in the
3147 * environment. */
3148 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3149 }
f85893a1 3150 s = end;
184f32ec 3151 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3152 SvREFCNT_dec(sv);
4633a7c4 3153 }
ed094faf 3154 if (!PL_perldb) {
3280af22 3155 PL_perldb = PERLDB_ALL;
a0d0e21e 3156 init_debugger();
ed094faf 3157 }
79072805
LW
3158 return s;
3159 case 'D':
0453d815 3160 {
79072805 3161#ifdef DEBUGGING
f20b2998 3162 forbid_setid('D', FALSE);
b4ab917c 3163 s++;
dd374669 3164 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3165#else /* !DEBUGGING */
0453d815 3166 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3167 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3168 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3169 for (s++; isALNUM(*s); s++) ;
79072805 3170#endif
79072805 3171 return s;
0453d815 3172 }
4633a7c4 3173 case 'h':
b6f82619 3174 usage();
79072805 3175 case 'i':
43c5f42d 3176 Safefree(PL_inplace);
c030f24b
GH
3177#if defined(__CYGWIN__) /* do backup extension automagically */
3178 if (*(s+1) == '\0') {
c86a4f2e 3179 PL_inplace = savepvs(".bak");
c030f24b
GH
3180 return s+1;
3181 }
3182#endif /* __CYGWIN__ */
5ef5d758 3183 {
d4c19fe8 3184 const char * const start = ++s;
5ef5d758
NC
3185 while (*s && !isSPACE(*s))
3186 ++s;
3187
3188 PL_inplace = savepvn(start, s - start);
3189 }
7b8d334a 3190 if (*s) {
5ef5d758 3191 ++s;
7b8d334a 3192 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3193 s++;
7b8d334a 3194 }
fb73857a 3195 return s;
4e49a025 3196 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3197 forbid_setid('I', FALSE);
fb73857a
PP
3198 ++s;
3199 while (*s && isSPACE(*s))
3200 ++s;
3201 if (*s) {
c7030b81 3202 const char *e, *p;
0df16ed7
GS
3203 p = s;
3204 /* ignore trailing spaces (possibly followed by other switches) */
3205 do {
3206 for (e = p; *e && !isSPACE(*e); e++) ;
3207 p = e;
3208 while (isSPACE(*p))
3209 p++;
3210 } while (*p && *p != '-');
55b4bc1c 3211 incpush(s, e-s,
e28f3139 3212 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3213 s = p;
3214 if (*s == '-')
3215 s++;
79072805
LW
3216 }
3217 else
a67e862a 3218 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3219 return s;
79072805 3220 case 'l':
3280af22 3221 PL_minus_l = TRUE;
79072805 3222 s++;
7889fe52
NIS
3223 if (PL_ors_sv) {
3224 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3225 PL_ors_sv = NULL;
7889fe52 3226 }
79072805 3227 if (isDIGIT(*s)) {
53305cf1 3228 I32 flags = 0;
a3b680e6 3229 STRLEN numlen;
396482e1 3230 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3231 numlen = 3 + (*s == '0');
3232 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3233 s += numlen;
3234 }
3235 else {
8bfdd7d9 3236 if (RsPARA(PL_rs)) {
396482e1 3237 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3238 }
3239 else {
8bfdd7d9 3240 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3241 }
79072805
LW
3242 }
3243 return s;
1a30305b 3244 case 'M':
f20b2998 3245 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3246 /* FALL THROUGH */
3247 case 'm':
f20b2998 3248 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3249 if (*++s) {
c7030b81 3250 const char *start;
b64cb68c 3251 const char *end;
11343788 3252 SV *sv;
e1ec3a88 3253 const char *use = "use ";
0544e6df 3254 bool colon = FALSE;
a5f75d66 3255 /* -M-foo == 'no foo' */
d0043bd1
NC
3256 /* Leading space on " no " is deliberate, to make both
3257 possibilities the same length. */
3258 if (*s == '-') { use = " no "; ++s; }
3259 sv = newSVpvn(use,4);
a5f75d66 3260 start = s;
1a30305b 3261 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3262 while(isALNUM(*s) || *s==':') {
3263 if( *s++ == ':' ) {
3264 if( *s == ':' )
3265 s++;
3266 else
3267 colon = TRUE;
3268 }
3269 }
3270 if (s == start)
3271 Perl_croak(aTHX_ "Module name required with -%c option",
3272 option);
3273 if (colon)
3274 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3275 "contains single ':'",
63da6837 3276 (int)(s - start), start, option);
b64cb68c 3277 end = s + strlen(s);
c07a80fd 3278 if (*s != '=') {
b64cb68c 3279 sv_catpvn(sv, start, end - start);
0544e6df 3280 if (option == 'm') {
c07a80fd 3281 if (*s != '\0')
cea2e8a9 3282 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3283 sv_catpvs( sv, " ()");
c07a80fd
PP
3284 }
3285 } else {
11343788 3286 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3287 /* Use NUL as q''-delimiter. */
3288 sv_catpvs(sv, " split(/,/,q\0");
3289 ++s;
3290 sv_catpvn(sv, s, end - s);
396482e1 3291 sv_catpvs(sv, "\0)");
c07a80fd 3292 }
b64cb68c 3293 s = end;
29a861e7 3294 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3295 }
3296 else
0544e6df 3297 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3298 return s;
79072805 3299 case 'n':
3280af22 3300 PL_minus_n = TRUE;
79072805
LW
3301 s++;
3302 return s;
3303 case 'p':
3280af22 3304 PL_minus_p = TRUE;
79072805
LW
3305 s++;
3306 return s;
3307 case 's':
f20b2998 3308 forbid_setid('s', FALSE);
3280af22 3309 PL_doswitches = TRUE;
79072805
LW
3310 s++;
3311 return s;
6537fe72 3312 case 't':
27a6968b 3313 case 'T':
6537fe72 3314 if (!PL_tainting)
27a6968b 3315 TOO_LATE_FOR(*s);
6537fe72 3316 s++;
463ee0b2 3317 return s;
79072805 3318 case 'u':
3280af22 3319 PL_do_undump = TRUE;
79072805
LW
3320 s++;
3321 return s;
3322 case 'U':
3280af22 3323 PL_unsafe = TRUE;
79072805
LW
3324 s++;
3325 return s;
3326 case 'v':
c4bc78d9
NC
3327 minus_v();
3328 case 'w':
3329 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3330 PL_dowarn |= G_WARN_ON;
3331 }
3332 s++;
3333 return s;
3334 case 'W':
3335 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3336 if (!specialWARN(PL_compiling.cop_warnings))
3337 PerlMemShared_free(PL_compiling.cop_warnings);
3338 PL_compiling.cop_warnings = pWARN_ALL ;
3339 s++;
3340 return s;
3341 case 'X':
3342 PL_dowarn = G_WARN_ALL_OFF;
3343 if (!specialWARN(PL_compiling.cop_warnings))
3344 PerlMemShared_free(PL_compiling.cop_warnings);
3345 PL_compiling.cop_warnings = pWARN_NONE ;
3346 s++;
3347 return s;
3348 case '*':
3349 case ' ':
3350 while( *s == ' ' )
3351 ++s;
3352 if (s[0] == '-') /* Additional switches on #! line. */
3353 return s+1;
3354 break;
3355 case '-':
3356 case 0:
3357#if defined(WIN32) || !defined(PERL_STRICT_CR)
3358 case '\r':
3359#endif
3360 case '\n':
3361 case '\t':
3362 break;
3363#ifdef ALTERNATE_SHEBANG
3364 case 'S': /* OS/2 needs -S on "extproc" line. */
3365 break;
3366#endif
4bb78d63
CB
3367 case 'e': case 'f': case 'x': case 'E':
3368#ifndef ALTERNATE_SHEBANG
3369 case 'S':
3370#endif
3371 case 'V':
c4bc78d9 3372 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3373 default:
3374 Perl_croak(aTHX_
3375 "Unrecognized switch: -%.1s (-h will show valid options)",s
3376 );
c4bc78d9
NC
3377 }
3378 return NULL;
3379}
3380
3381
3382STATIC void
3383S_minus_v(pTHX)
3384{
d7aa5382 3385 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3386 upg_version(PL_patchlevel, TRUE);
8e9464f1 3387#if !defined(DGUX)
46807d8e
YO
3388 {
3389 SV* level= vstringify(PL_patchlevel);
3390#ifdef PERL_PATCHNUM
23d483e2
NC
3391# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3392 SV *num = newSVpvs(PERL_PATCHNUM "*");
3393# else
3394 SV *num = newSVpvs(PERL_PATCHNUM);
3395# endif
46807d8e
YO
3396
3397 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3398 SvREFCNT_dec(level);
3399 level= num;
3400 } else {
d0a9311f 3401 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3402 SvREFCNT_dec(num);
3403 }
3404 #endif
3405 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3406 "\nThis is perl " STRINGIFY(PERL_REVISION)
3407 ", version " STRINGIFY(PERL_VERSION)
3408 ", subversion " STRINGIFY(PERL_SUBVERSION)
3409 " (%"SVf") built for " ARCHNAME, level
3410 );
46807d8e
YO
3411 SvREFCNT_dec(level);
3412 }
8e9464f1
JH
3413#else /* DGUX */
3414/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3415 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3416 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3417 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3418 PerlIO_printf(PerlIO_stdout(),
3419 Perl_form(aTHX_ " built under %s at %s %s\n",
3420 OSNAME, __DATE__, __TIME__));
3421 PerlIO_printf(PerlIO_stdout(),
3422 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3423 OSVERS));
8e9464f1 3424#endif /* !DGUX */
fb73857a
PP
3425#if defined(LOCAL_PATCH_COUNT)
3426 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3427 PerlIO_printf(PerlIO_stdout(),
3428 "\n(with %d registered patch%s, "
3429 "see perl -V for more detail)",
bb7a0f54 3430 LOCAL_PATCH_COUNT,
b0e47665 3431 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3432#endif
1a30305b 3433
b0e47665 3434 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3435 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3436#ifdef MSDOS
b0e47665
GS
3437 PerlIO_printf(PerlIO_stdout(),
3438 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3439#endif
3440#ifdef DJGPP
b0e47665
GS
3441 PerlIO_printf(PerlIO_stdout(),
3442 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3443 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3444#endif
79072805 3445#ifdef OS2
b0e47665
GS
3446 PerlIO_printf(PerlIO_stdout(),
3447 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3448 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3449#endif
79072805 3450#ifdef atarist
b0e47665
GS
3451 PerlIO_printf(PerlIO_stdout(),
3452 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3453#endif
a3f9223b 3454#ifdef __BEOS__
b0e47665
GS
3455 PerlIO_printf(PerlIO_stdout(),
3456 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3457#endif
1d84e8df 3458#ifdef MPE
b0e47665 3459 PerlIO_printf(PerlIO_stdout(),
e583a879 3460 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3461#endif
9d116dd7 3462#ifdef OEMVS
b0e47665
GS
3463 PerlIO_printf(PerlIO_stdout(),
3464 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3465#endif
495c5fdc 3466#ifdef __VOS__
b0e47665 3467 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3468 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3469#endif
092bebab 3470#ifdef __OPEN_VM
b0e47665
GS
3471 PerlIO_printf(PerlIO_stdout(),
3472 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3473#endif
a1a0e61e 3474#ifdef POSIX_BC
b0e47665
GS
3475 PerlIO_printf(PerlIO_stdout(),
3476 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3477#endif
f83d2536 3478#ifdef EPOC
b0e47665 3479 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3480 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3481#endif
e1caacb4 3482#ifdef UNDER_CE
b475b3e6
JH
3483 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3484 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3485 wce_hitreturn();
3486#endif
a0fd4948 3487#ifdef __SYMBIAN32__
27da23d5
JH
3488 PerlIO_printf(PerlIO_stdout(),
3489 "Symbian port by Nokia, 2004-2005\n");
3490#endif
baed7233
DL
3491#ifdef BINARY_BUILD_NOTICE
3492 BINARY_BUILD_NOTICE;
3493#endif
b0e47665
GS
3494 PerlIO_printf(PerlIO_stdout(),
3495 "\n\
79072805 3496Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3497GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3498Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3499this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3500Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3501 my_exit(0);
79072805
LW
3502}
3503
3504/* compliments of Tom Christiansen */
3505
3506/* unexec() can be found in the Gnu emacs distribution */
ee580363 3507/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3508
25bbd826
CB
3509#ifdef VMS
3510#include <lib$routines.h>
3511#endif
3512
79072805 3513void
864dbfa3 3514Perl_my_unexec(pTHX)
79072805 3515{
b37c2d43 3516 PERL_UNUSED_CONTEXT;
79072805 3517#ifdef UNEXEC
b37c2d43
AL
3518 SV * prog = newSVpv(BIN_EXP, 0);
3519 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3520 int status = 1;