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4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
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11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
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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
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39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
JH
61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 80# define validate_suid(rsfp) NOOP
cc69b689 81#else
b24bc095 82# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 83#endif
8d063cd8 84
d6f07c05
AL
85#define CALL_BODY_SUB(myop) \
86 if (PL_op == (myop)) \
139d0ce6 87 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
88 if (PL_op) \
89 CALLRUNOPS(aTHX);
90
91#define CALL_LIST_BODY(cv) \
92 PUSHMARK(PL_stack_sp); \
9a8aa25b 93 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 94
e6827a76 95static void
daa7d858 96S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 97{
27da23d5 98 dVAR;
e6827a76
NC
99 if (!PL_curinterp) {
100 PERL_SET_INTERP(my_perl);
3db8f154 101#if defined(USE_ITHREADS)
e6827a76
NC
102 INIT_THREADS;
103 ALLOC_THREAD_KEY;
104 PERL_SET_THX(my_perl);
105 OP_REFCNT_INIT;
e8570548 106 OP_CHECK_MUTEX_INIT;
71ad1b0c 107 HINTS_REFCNT_INIT;
e6827a76 108 MUTEX_INIT(&PL_dollarzero_mutex);
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109 MUTEX_INIT(&PL_my_ctx_mutex);
110# endif
e6827a76 111 }
c0bce9aa
NC
112#if defined(USE_ITHREADS)
113 else
114#else
115 /* This always happens for non-ithreads */
116#endif
117 {
e6827a76
NC
118 PERL_SET_THX(my_perl);
119 }
120}
06d86050 121
cbec8ebe
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122
123/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
124
125void
126Perl_sys_init(int* argc, char*** argv)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_SYS_INIT_BODY(argc, argv);
135}
136
137void
138Perl_sys_init3(int* argc, char*** argv, char*** env)
139{
4fc0badb 140 dVAR;
7918f24d
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141
142 PERL_ARGS_ASSERT_SYS_INIT3;
143
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DM
144 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
145 PERL_UNUSED_ARG(argv);
146 PERL_UNUSED_ARG(env);
147 PERL_SYS_INIT3_BODY(argc, argv, env);
148}
149
150void
d0820ef1 151Perl_sys_term()
cbec8ebe 152{
4fc0badb 153 dVAR;
bf81751b
DM
154 if (!PL_veto_cleanup) {
155 PERL_SYS_TERM_BODY();
156 }
cbec8ebe
DM
157}
158
159
32e30700
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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
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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;
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NC
232
233 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
234
8990e307 235#ifdef MULTIPLICITY
54aff467 236 init_interp();
ac27b0f5 237 PL_perl_destruct_level = 1;
54aff467 238#else
7918f24d 239 PERL_UNUSED_ARG(my_perl);
54aff467
GS
240 if (PL_perl_destruct_level > 0)
241 init_interp();
242#endif
34caed6d
DM
243 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
244
0d96b528 245 init_constants();
34caed6d
DM
246
247 SvREADONLY_on(&PL_sv_placeholder);
248 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
249
250 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 251#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 252 PL_pidstatus = newHV();
ca0c25f6 253#endif
79072805 254
396482e1 255 PL_rs = newSVpvs("\n");
dc92893f 256
cea2e8a9 257 init_stacks();
79072805 258
748a9306 259 init_ids();
a5f75d66 260
312caa8e 261 JMPENV_BOOTSTRAP;
f86702cc
PP
262 STATUS_ALL_SUCCESS;
263
0672f40e 264 init_i18nl10n(1);
36477c24 265 SET_NUMERIC_STANDARD();
0b5b802d 266
ab821d7f 267#if defined(LOCAL_PATCH_COUNT)
3280af22 268 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
269#endif
270
52853b95
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271#ifdef HAVE_INTERP_INTERN
272 sys_intern_init();
273#endif
274
3a1ee7e8 275 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 276
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NIS
277 PL_fdpid = newAV(); /* for remembering popen pids by fd */
278 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 279 PL_errors = newSVpvs("");
76f68e9b
MHM
280 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
281 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
282 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 283#ifdef USE_ITHREADS
402d2eb1
NC
284 /* First entry is a list of empty elements. It needs to be initialised
285 else all hell breaks loose in S_find_uninit_var(). */
286 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 287 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 288 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 289#endif
e5dd39fc 290#ifdef USE_REENTRANT_API
59bd0823 291 Perl_reentrant_init(aTHX);
e5dd39fc 292#endif
7dc86639
YO
293#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
294 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
295 * This MUST be done before any hash stores or fetches take place.
296 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
297 * yourself, it is your responsibility to provide a good random seed!
298 * You can also define PERL_HASH_SEED in compile time, see hv.h.
299 *
300 * XXX: fix this comment */
301 if (PL_hash_seed_set == FALSE) {
302 Perl_get_hash_seed(aTHX_ PL_hash_seed);
303 PL_hash_seed_set= TRUE;
304 }
305#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
306
307 /* Note that strtab is a rather special HV. Assumptions are made
308 about not iterating on it, and not adding tie magic to it.
309 It is properly deallocated in perl_destruct() */
310 PL_strtab = newHV();
311
3d47000e
AB
312 HvSHAREKEYS_off(PL_strtab); /* mandatory */
313 hv_ksplit(PL_strtab, 512);
314
0631ea03
AB
315#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
316 _dyld_lookup_and_bind
317 ("__environ", (unsigned long *) &environ_pointer, NULL);
318#endif /* environ */
319
2f42fcb0
JH
320#ifndef PERL_MICRO
321# ifdef USE_ENVIRON_ARRAY
0631ea03 322 PL_origenviron = environ;
2f42fcb0 323# endif
0631ea03
AB
324#endif
325
5311654c 326 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 327 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
328 * BeOS has those, but returns the wrong value.
329 * The HZ if not originally defined has been by now
330 * been defined as CLK_TCK, if available. */
dbc1d986 331#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
332 PL_clocktick = sysconf(_SC_CLK_TCK);
333 if (PL_clocktick <= 0)
334#endif
335 PL_clocktick = HZ;
336
081fc587
AB
337 PL_stashcache = newHV();
338
e8e3635e 339 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 340 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 341
27da23d5
JH
342#ifdef HAS_MMAP
343 if (!PL_mmap_page_size) {
344#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
345 {
346 SETERRNO(0, SS_NORMAL);
347# ifdef _SC_PAGESIZE
348 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
349# else
350 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
351# endif
352 if ((long) PL_mmap_page_size < 0) {
353 if (errno) {
44f8325f 354 SV * const error = ERRSV;
d4c19fe8 355 SvUPGRADE(error, SVt_PV);
0510663f 356 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
357 }
358 else
359 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
360 }
361 }
362#else
363# ifdef HAS_GETPAGESIZE
364 PL_mmap_page_size = getpagesize();
365# else
366# if defined(I_SYS_PARAM) && defined(PAGESIZE)
367 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
368# endif
369# endif
370#endif
371 if (PL_mmap_page_size <= 0)
372 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
373 (IV) PL_mmap_page_size);
374 }
375#endif /* HAS_MMAP */
376
377#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
378 PL_timesbase.tms_utime = 0;
379 PL_timesbase.tms_stime = 0;
380 PL_timesbase.tms_cutime = 0;
381 PL_timesbase.tms_cstime = 0;
382#endif
383
7d113631
NC
384 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
385
a3e6e81e 386 PL_registered_mros = newHV();
9e169432
NC
387 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
388 HvMAX(PL_registered_mros) = 0;
a3e6e81e 389
8990e307 390 ENTER;
79072805
LW
391}
392
954c1994 393/*
62375a60
NIS
394=for apidoc nothreadhook
395
396Stub that provides thread hook for perl_destruct when there are
397no threads.
398
399=cut
400*/
401
402int
4e9e3734 403Perl_nothreadhook(pTHX)
62375a60 404{
96a5add6 405 PERL_UNUSED_CONTEXT;
62375a60
NIS
406 return 0;
407}
408
41e4abd8
NC
409#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
410void
411Perl_dump_sv_child(pTHX_ SV *sv)
412{
413 ssize_t got;
bf357333
NC
414 const int sock = PL_dumper_fd;
415 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
416 union control_un control;
417 struct msghdr msg;
808ad2d0 418 struct iovec vec[2];
bf357333 419 struct cmsghdr *cmptr;
808ad2d0
NC
420 int returned_errno;
421 unsigned char buffer[256];
41e4abd8 422
7918f24d
NC
423 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
424
bf357333 425 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
426 return;
427
428 PerlIO_flush(Perl_debug_log);
429
bf357333
NC
430 /* All these shenanigans are to pass a file descriptor over to our child for
431 it to dump out to. We can't let it hold open the file descriptor when it
432 forks, as the file descriptor it will dump to can turn out to be one end
433 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 434 be open, the wait would be forever.) */
bf357333
NC
435
436 msg.msg_control = control.control;
437 msg.msg_controllen = sizeof(control.control);
438 /* We're a connected socket so we don't need a destination */
439 msg.msg_name = NULL;
440 msg.msg_namelen = 0;
441 msg.msg_iov = vec;
808ad2d0 442 msg.msg_iovlen = 1;
bf357333
NC
443
444 cmptr = CMSG_FIRSTHDR(&msg);
445 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
446 cmptr->cmsg_level = SOL_SOCKET;
447 cmptr->cmsg_type = SCM_RIGHTS;
448 *((int *)CMSG_DATA(cmptr)) = 1;
449
450 vec[0].iov_base = (void*)&sv;
451 vec[0].iov_len = sizeof(sv);
452 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
453
454 if(got < 0) {
bf357333 455 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
456 abort();
457 }
bf357333
NC
458 if(got < sizeof(sv)) {
459 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
460 abort();
461 }
462
808ad2d0
NC
463 /* Return protocol is
464 int: errno value
465 unsigned char: length of location string (0 for empty)
466 unsigned char*: string (not terminated)
467 */
468 vec[0].iov_base = (void*)&returned_errno;
469 vec[0].iov_len = sizeof(returned_errno);
470 vec[1].iov_base = buffer;
471 vec[1].iov_len = 1;
472
473 got = readv(sock, vec, 2);
41e4abd8
NC
474
475 if(got < 0) {
476 perror("Debug leaking scalars parent read failed");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
808ad2d0 480 if(got < sizeof(returned_errno) + 1) {
41e4abd8 481 perror("Debug leaking scalars parent short read");
808ad2d0 482 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
483 abort();
484 }
485
808ad2d0
NC
486 if (*buffer) {
487 got = read(sock, buffer + 1, *buffer);
488 if(got < 0) {
489 perror("Debug leaking scalars parent read 2 failed");
490 PerlIO_flush(PerlIO_stderr());
491 abort();
492 }
493
494 if(got < *buffer) {
495 perror("Debug leaking scalars parent short read 2");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499 }
500
501 if (returned_errno || *buffer) {
502 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
503 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
504 returned_errno, strerror(returned_errno));
41e4abd8
NC
505 }
506}
507#endif
508
62375a60 509/*
954c1994
GS
510=for apidoc perl_destruct
511
512Shuts down a Perl interpreter. See L<perlembed>.
513
514=cut
515*/
516
31d77e54 517int
0cb96387 518perl_destruct(pTHXx)
79072805 519{
27da23d5 520 dVAR;
be2ea8ed 521 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 522 HV *hv;
2aa47728 523#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
524 pid_t child;
525#endif
8990e307 526
7918f24d
NC
527 PERL_ARGS_ASSERT_PERL_DESTRUCT;
528#ifndef MULTIPLICITY
ed6c66dd 529 PERL_UNUSED_ARG(my_perl);
7918f24d 530#endif
9d4ba2ae 531
3d22c4f0
GG
532 assert(PL_scopestack_ix == 1);
533
7766f137
GS
534 /* wait for all pseudo-forked children to finish */
535 PERL_WAIT_FOR_CHILDREN;
536
3280af22 537 destruct_level = PL_perl_destruct_level;
36e77d41 538#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 539 {
9d4ba2ae
AL
540 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
541 if (s) {
36e77d41
DD
542 const int i = atoi(s);
543#ifdef DEBUGGING
544 if (destruct_level < i) destruct_level = i;
545#endif
546#ifdef PERL_TRACK_MEMPOOL
547 /* RT #114496, for perl_free */
548 PL_perl_destruct_level = i;
549#endif
5f05dabc 550 }
4633a7c4
LW
551 }
552#endif
553
27da23d5 554 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
555 dJMPENV;
556 int x = 0;
557
558 JMPENV_PUSH(x);
1b6737cc 559 PERL_UNUSED_VAR(x);
9ebf26ad 560 if (PL_endav && !PL_minus_c) {
ca7b837b 561 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 562 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 563 }
f3faeb53 564 JMPENV_POP;
26f423df 565 }
f3faeb53 566 LEAVE;
a0d0e21e 567 FREETMPS;
3d22c4f0 568 assert(PL_scopestack_ix == 0);
a0d0e21e 569
e00b64d4 570 /* Need to flush since END blocks can produce output */
f13a2bc0 571 my_fflush_all();
e00b64d4 572
16c91539 573 if (PL_threadhook(aTHX)) {
62375a60 574 /* Threads hook has vetoed further cleanup */
c301d606 575 PL_veto_cleanup = TRUE;
37038d91 576 return STATUS_EXIT;
62375a60
NIS
577 }
578
2aa47728
NC
579#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
580 if (destruct_level != 0) {
581 /* Fork here to create a child. Our child's job is to preserve the
582 state of scalars prior to destruction, so that we can instruct it
583 to dump any scalars that we later find have leaked.
584 There's no subtlety in this code - it assumes POSIX, and it doesn't
585 fail gracefully */
586 int fd[2];
587
588 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
589 perror("Debug leaking scalars socketpair failed");
590 abort();
591 }
592
593 child = fork();
594 if(child == -1) {
595 perror("Debug leaking scalars fork failed");
596 abort();
597 }
598 if (!child) {
599 /* We are the child */
3125a5a4
NC
600 const int sock = fd[1];
601 const int debug_fd = PerlIO_fileno(Perl_debug_log);
602 int f;
808ad2d0
NC
603 const char *where;
604 /* Our success message is an integer 0, and a char 0 */
b61433a9 605 static const char success[sizeof(int) + 1] = {0};
3125a5a4 606
2aa47728 607 close(fd[0]);
2aa47728 608
3125a5a4
NC
609 /* We need to close all other file descriptors otherwise we end up
610 with interesting hangs, where the parent closes its end of a
611 pipe, and sits waiting for (another) child to terminate. Only
612 that child never terminates, because it never gets EOF, because
bf357333
NC
613 we also have the far end of the pipe open. We even need to
614 close the debugging fd, because sometimes it happens to be one
615 end of a pipe, and a process is waiting on the other end for
616 EOF. Normally it would be closed at some point earlier in
617 destruction, but if we happen to cause the pipe to remain open,
618 EOF never occurs, and we get an infinite hang. Hence all the
619 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
620
621 f = sysconf(_SC_OPEN_MAX);
622 if(f < 0) {
808ad2d0
NC
623 where = "sysconf failed";
624 goto abort;
3125a5a4
NC
625 }
626 while (f--) {
627 if (f == sock)
628 continue;
3125a5a4
NC
629 close(f);
630 }
631
2aa47728
NC
632 while (1) {
633 SV *target;
bf357333
NC
634 union control_un control;
635 struct msghdr msg;
636 struct iovec vec[1];
637 struct cmsghdr *cmptr;
638 ssize_t got;
639 int got_fd;
640
641 msg.msg_control = control.control;
642 msg.msg_controllen = sizeof(control.control);
643 /* We're a connected socket so we don't need a source */
644 msg.msg_name = NULL;
645 msg.msg_namelen = 0;
646 msg.msg_iov = vec;
647 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
648
649 vec[0].iov_base = (void*)&target;
650 vec[0].iov_len = sizeof(target);
651
652 got = recvmsg(sock, &msg, 0);
2aa47728
NC
653
654 if(got == 0)
655 break;
656 if(got < 0) {
808ad2d0
NC
657 where = "recv failed";
658 goto abort;
2aa47728
NC
659 }
660 if(got < sizeof(target)) {
808ad2d0
NC
661 where = "short recv";
662 goto abort;
2aa47728 663 }
bf357333 664
808ad2d0
NC
665 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
666 where = "no cmsg";
667 goto abort;
668 }
669 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
670 where = "wrong cmsg_len";
671 goto abort;
672 }
673 if(cmptr->cmsg_level != SOL_SOCKET) {
674 where = "wrong cmsg_level";
675 goto abort;
676 }
677 if(cmptr->cmsg_type != SCM_RIGHTS) {
678 where = "wrong cmsg_type";
679 goto abort;
680 }
bf357333
NC
681
682 got_fd = *(int*)CMSG_DATA(cmptr);
683 /* For our last little bit of trickery, put the file descriptor
684 back into Perl_debug_log, as if we never actually closed it
685 */
808ad2d0
NC
686 if(got_fd != debug_fd) {
687 if (dup2(got_fd, debug_fd) == -1) {
688 where = "dup2";
689 goto abort;
690 }
691 }
2aa47728 692 sv_dump(target);
bf357333 693
2aa47728
NC
694 PerlIO_flush(Perl_debug_log);
695
808ad2d0 696 got = write(sock, &success, sizeof(success));
2aa47728
NC
697
698 if(got < 0) {
808ad2d0
NC
699 where = "write failed";
700 goto abort;
2aa47728 701 }
808ad2d0
NC
702 if(got < sizeof(success)) {
703 where = "short write";
704 goto abort;
2aa47728
NC
705 }
706 }
707 _exit(0);
808ad2d0
NC
708 abort:
709 {
710 int send_errno = errno;
711 unsigned char length = (unsigned char) strlen(where);
712 struct iovec failure[3] = {
713 {(void*)&send_errno, sizeof(send_errno)},
714 {&length, 1},
715 {(void*)where, length}
716 };
717 int got = writev(sock, failure, 3);
718 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
719 in the parent if we try to read from the socketpair after the
720 child has exited, even if there was data to read.
721 So sleep a bit to give the parent a fighting chance of
722 reading the data. */
723 sleep(2);
724 _exit((got == -1) ? errno : 0);
725 }
bf357333 726 /* End of child. */
2aa47728 727 }
41e4abd8 728 PL_dumper_fd = fd[0];
2aa47728
NC
729 close(fd[1]);
730 }
731#endif
732
ff0cee69
PP
733 /* We must account for everything. */
734
735 /* Destroy the main CV and syntax tree */
37e77c23
FC
736 /* Set PL_curcop now, because destroying ops can cause new SVs
737 to be generated in Perl_pad_swipe, and when running with
738 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
739 op from which the filename structure member is copied. */
17fbfdf6 740 PL_curcop = &PL_compiling;
3280af22 741 if (PL_main_root) {
4e380990
DM
742 /* ensure comppad/curpad to refer to main's pad */
743 if (CvPADLIST(PL_main_cv)) {
744 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
745 }
3280af22 746 op_free(PL_main_root);
5f66b61c 747 PL_main_root = NULL;
a0d0e21e 748 }
5f66b61c 749 PL_main_start = NULL;
aac9d523
DM
750 /* note that PL_main_cv isn't usually actually freed at this point,
751 * due to the CvOUTSIDE refs from subs compiled within it. It will
752 * get freed once all the subs are freed in sv_clean_all(), for
753 * destruct_level > 0 */
3280af22 754 SvREFCNT_dec(PL_main_cv);
601f1833 755 PL_main_cv = NULL;
ca7b837b 756 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 757
13621cfb
NIS
758 /* Tell PerlIO we are about to tear things apart in case
759 we have layers which are using resources that should
760 be cleaned up now.
761 */
762
763 PerlIO_destruct(aTHX);
764
3280af22 765 if (PL_sv_objcount) {
a0d0e21e
LW
766 /*
767 * Try to destruct global references. We do this first so that the
768 * destructors and destructees still exist. Some sv's might remain.
769 * Non-referenced objects are on their own.
770 */
a0d0e21e 771 sv_clean_objs();
bf9cdc68 772 PL_sv_objcount = 0;
8990e307
LW
773 }
774
5cd24f17 775 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 776 SvREFCNT_dec(PL_warnhook);
a0714e2c 777 PL_warnhook = NULL;
3280af22 778 SvREFCNT_dec(PL_diehook);
a0714e2c 779 PL_diehook = NULL;
5cd24f17 780
4b556e6c 781 /* call exit list functions */
3280af22 782 while (PL_exitlistlen-- > 0)
acfe0abc 783 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 784
3280af22 785 Safefree(PL_exitlist);
4b556e6c 786
1c4916e5
CB
787 PL_exitlist = NULL;
788 PL_exitlistlen = 0;
789
a3e6e81e
NC
790 SvREFCNT_dec(PL_registered_mros);
791
551a8b83 792 /* jettison our possibly duplicated environment */
4b647fb0
DM
793 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
794 * so we certainly shouldn't free it here
795 */
2f42fcb0 796#ifndef PERL_MICRO
4b647fb0 797#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 798 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
799#ifdef USE_ITHREADS
800 /* only main thread can free environ[0] contents */
801 && PL_curinterp == aTHX
802#endif
803 )
804 {
551a8b83
JH
805 I32 i;
806
807 for (i = 0; environ[i]; i++)
4b420006 808 safesysfree(environ[i]);
0631ea03 809
4b420006
JH
810 /* Must use safesysfree() when working with environ. */
811 safesysfree(environ);
551a8b83
JH
812
813 environ = PL_origenviron;
814 }
815#endif
2f42fcb0 816#endif /* !PERL_MICRO */
551a8b83 817
30985c42
JH
818 if (destruct_level == 0) {
819
820 DEBUG_P(debprofdump());
821
822#if defined(PERLIO_LAYERS)
823 /* No more IO - including error messages ! */
824 PerlIO_cleanup(aTHX);
825#endif
826
827 CopFILE_free(&PL_compiling);
30985c42
JH
828
829 /* The exit() function will do everything that needs doing. */
830 return STATUS_EXIT;
831 }
832
5f8cb046
DM
833#ifdef USE_ITHREADS
834 /* the syntax tree is shared between clones
835 * so op_free(PL_main_root) only ReREFCNT_dec's
836 * REGEXPs in the parent interpreter
837 * we need to manually ReREFCNT_dec for the clones
838 */
0547a729
DM
839 {
840 I32 i = AvFILLp(PL_regex_padav);
841 SV **ary = AvARRAY(PL_regex_padav);
842
843 for (; i; i--) {
844 SvREFCNT_dec(ary[i]);
845 ary[i] = &PL_sv_undef;
846 }
847 }
d4d03940 848 Safefree(PL_stashpad);
5f8cb046
DM
849#endif
850
0547a729 851
ad64d0ec 852 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
853 PL_stashcache = NULL;
854
5f05dabc
PP
855 /* loosen bonds of global variables */
856
2f9285f8
DM
857 /* XXX can PL_parser still be non-null here? */
858 if(PL_parser && PL_parser->rsfp) {
859 (void)PerlIO_close(PL_parser->rsfp);
860 PL_parser->rsfp = NULL;
8ebc5c01
PP
861 }
862
84386e14
RGS
863 if (PL_minus_F) {
864 Safefree(PL_splitstr);
865 PL_splitstr = NULL;
866 }
867
8ebc5c01 868 /* switches */
3280af22
NIS
869 PL_minus_n = FALSE;
870 PL_minus_p = FALSE;
871 PL_minus_l = FALSE;
872 PL_minus_a = FALSE;
873 PL_minus_F = FALSE;
874 PL_doswitches = FALSE;
599cee73 875 PL_dowarn = G_WARN_OFF;
1a904fc8 876#ifdef PERL_SAWAMPERSAND
d3b97530 877 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 878#endif
3280af22
NIS
879 PL_unsafe = FALSE;
880
881 Safefree(PL_inplace);
bd61b366 882 PL_inplace = NULL;
a7cb1f99 883 SvREFCNT_dec(PL_patchlevel);
1e8125c6 884 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
885
886 if (PL_e_script) {
887 SvREFCNT_dec(PL_e_script);
a0714e2c 888 PL_e_script = NULL;
8ebc5c01
PP
889 }
890
bf9cdc68
RG
891 PL_perldb = 0;
892
8ebc5c01
PP
893 /* magical thingies */
894
e23d9e2f
CS
895 SvREFCNT_dec(PL_ofsgv); /* *, */
896 PL_ofsgv = NULL;
5f05dabc 897
7889fe52 898 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 899 PL_ors_sv = NULL;
8ebc5c01 900
3280af22 901 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 902 PL_rs = NULL;
dc92893f 903
d33b2eba 904 Safefree(PL_osname); /* $^O */
bd61b366 905 PL_osname = NULL;
5f05dabc 906
3280af22 907 SvREFCNT_dec(PL_statname);
a0714e2c
SS
908 PL_statname = NULL;
909 PL_statgv = NULL;
5f05dabc 910
8ebc5c01
PP
911 /* defgv, aka *_ should be taken care of elsewhere */
912
7d5ea4e7
GS
913 /* float buffer */
914 Safefree(PL_efloatbuf);
bd61b366 915 PL_efloatbuf = NULL;
7d5ea4e7
GS
916 PL_efloatsize = 0;
917
8ebc5c01 918 /* startup and shutdown function lists */
3280af22 919 SvREFCNT_dec(PL_beginav);
5a837c8f 920 SvREFCNT_dec(PL_beginav_save);
3280af22 921 SvREFCNT_dec(PL_endav);
7d30b5c4 922 SvREFCNT_dec(PL_checkav);
ece599bd 923 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
924 SvREFCNT_dec(PL_unitcheckav);
925 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 926 SvREFCNT_dec(PL_initav);
7d49f689
NC
927 PL_beginav = NULL;
928 PL_beginav_save = NULL;
929 PL_endav = NULL;
930 PL_checkav = NULL;
931 PL_checkav_save = NULL;
3c10abe3
AG
932 PL_unitcheckav = NULL;
933 PL_unitcheckav_save = NULL;
7d49f689 934 PL_initav = NULL;
5618dfe8 935
8ebc5c01 936 /* shortcuts just get cleared */
a0714e2c
SS
937 PL_envgv = NULL;
938 PL_incgv = NULL;
939 PL_hintgv = NULL;
940 PL_errgv = NULL;
941 PL_argvgv = NULL;
942 PL_argvoutgv = NULL;
943 PL_stdingv = NULL;
944 PL_stderrgv = NULL;
945 PL_last_in_gv = NULL;
946 PL_replgv = NULL;
947 PL_DBgv = NULL;
948 PL_DBline = NULL;
949 PL_DBsub = NULL;
950 PL_DBsingle = NULL;
951 PL_DBtrace = NULL;
952 PL_DBsignal = NULL;
601f1833 953 PL_DBcv = NULL;
7d49f689 954 PL_dbargs = NULL;
5c284bb0 955 PL_debstash = NULL;
8ebc5c01 956
7a1c5554 957 SvREFCNT_dec(PL_argvout_stack);
7d49f689 958 PL_argvout_stack = NULL;
8ebc5c01 959
5c831c24 960 SvREFCNT_dec(PL_modglobal);
5c284bb0 961 PL_modglobal = NULL;
5c831c24 962 SvREFCNT_dec(PL_preambleav);
7d49f689 963 PL_preambleav = NULL;
5c831c24 964 SvREFCNT_dec(PL_subname);
a0714e2c 965 PL_subname = NULL;
ca0c25f6 966#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 967 SvREFCNT_dec(PL_pidstatus);
5c284bb0 968 PL_pidstatus = NULL;
ca0c25f6 969#endif
5c831c24 970 SvREFCNT_dec(PL_toptarget);
a0714e2c 971 PL_toptarget = NULL;
5c831c24 972 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
973 PL_bodytarget = NULL;
974 PL_formtarget = NULL;
5c831c24 975
d33b2eba 976 /* free locale stuff */
b9582b6a 977#ifdef USE_LOCALE_COLLATE
d33b2eba 978 Safefree(PL_collation_name);
bd61b366 979 PL_collation_name = NULL;
b9582b6a 980#endif
d33b2eba 981
b9582b6a 982#ifdef USE_LOCALE_NUMERIC
d33b2eba 983 Safefree(PL_numeric_name);
bd61b366 984 PL_numeric_name = NULL;
a453c169 985 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 986 PL_numeric_radix_sv = NULL;
b9582b6a 987#endif
d33b2eba 988
5c831c24
GS
989 /* clear utf8 character classes */
990 SvREFCNT_dec(PL_utf8_alnum);
5c831c24 991 SvREFCNT_dec(PL_utf8_alpha);
5c831c24
GS
992 SvREFCNT_dec(PL_utf8_graph);
993 SvREFCNT_dec(PL_utf8_digit);
994 SvREFCNT_dec(PL_utf8_upper);
995 SvREFCNT_dec(PL_utf8_lower);
996 SvREFCNT_dec(PL_utf8_print);
997 SvREFCNT_dec(PL_utf8_punct);
5c831c24
GS
998 SvREFCNT_dec(PL_utf8_mark);
999 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1000 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1001 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1002 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1003 SvREFCNT_dec(PL_utf8_idstart);
1004 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1005 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1006 PL_utf8_alnum = NULL;
a0714e2c 1007 PL_utf8_alpha = NULL;
a0714e2c
SS
1008 PL_utf8_graph = NULL;
1009 PL_utf8_digit = NULL;
1010 PL_utf8_upper = NULL;
1011 PL_utf8_lower = NULL;
1012 PL_utf8_print = NULL;
1013 PL_utf8_punct = NULL;
a0714e2c
SS
1014 PL_utf8_mark = NULL;
1015 PL_utf8_toupper = NULL;
1016 PL_utf8_totitle = NULL;
1017 PL_utf8_tolower = NULL;
1018 PL_utf8_tofold = NULL;
1019 PL_utf8_idstart = NULL;
1020 PL_utf8_idcont = NULL;
2726813d 1021 PL_utf8_foldclosures = NULL;
5c831c24 1022
971a9dd3 1023 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1024 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1025 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1026 cophh_free(CopHINTHASH_get(&PL_compiling));
1027 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1028 CopFILE_free(&PL_compiling);
5c831c24 1029
a0d0e21e 1030 /* Prepare to destruct main symbol table. */
5f05dabc 1031
3280af22 1032 hv = PL_defstash;
ca556bcd
DM
1033 /* break ref loop *:: <=> %:: */
1034 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1035 PL_defstash = 0;
a0d0e21e 1036 SvREFCNT_dec(hv);
5c831c24 1037 SvREFCNT_dec(PL_curstname);
a0714e2c 1038 PL_curstname = NULL;
a0d0e21e 1039
5a844595
GS
1040 /* clear queued errors */
1041 SvREFCNT_dec(PL_errors);
a0714e2c 1042 PL_errors = NULL;
5a844595 1043
dd69841b
BB
1044 SvREFCNT_dec(PL_isarev);
1045
a0d0e21e 1046 FREETMPS;
9b387841 1047 if (destruct_level >= 2) {
3280af22 1048 if (PL_scopestack_ix != 0)
9b387841
NC
1049 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1050 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1051 (long)PL_scopestack_ix);
3280af22 1052 if (PL_savestack_ix != 0)
9b387841
NC
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced saves: %ld more saves than restores\n",
1055 (long)PL_savestack_ix);
3280af22 1056 if (PL_tmps_floor != -1)
9b387841
NC
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1058 (long)PL_tmps_floor + 1);
a0d0e21e 1059 if (cxstack_ix != -1)
9b387841
NC
1060 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1061 (long)cxstack_ix + 1);
a0d0e21e 1062 }
8990e307 1063
0547a729
DM
1064#ifdef USE_ITHREADS
1065 SvREFCNT_dec(PL_regex_padav);
1066 PL_regex_padav = NULL;
1067 PL_regex_pad = NULL;
1068#endif
1069
776df701 1070#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1071 /* the entries in this list are allocated via SV PVX's, so get freed
1072 * in sv_clean_all */
1073 Safefree(PL_my_cxt_list);
776df701 1074#endif
57bb2458 1075
8990e307 1076 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1077
1078 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1079 while (sv_clean_all() > 2)
5226ed68
JH
1080 ;
1081
d4777f27
GS
1082 AvREAL_off(PL_fdpid); /* no surviving entries */
1083 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1084 PL_fdpid = NULL;
d33b2eba 1085
6c644e78
GS
1086#ifdef HAVE_INTERP_INTERN
1087 sys_intern_clear();
1088#endif
1089
6e72f9df
PP
1090 /* Destruct the global string table. */
1091 {
1092 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1093 * so that sv_free() won't fail on them.
80459961
NC
1094 * Now that the global string table is using a single hunk of memory
1095 * for both HE and HEK, we either need to explicitly unshare it the
1096 * correct way, or actually free things here.
6e72f9df 1097 */
80459961
NC
1098 I32 riter = 0;
1099 const I32 max = HvMAX(PL_strtab);
c4420975 1100 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1101 HE *hent = array[0];
1102
6e72f9df 1103 for (;;) {
0453d815 1104 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1105 HE * const next = HeNEXT(hent);
9014280d 1106 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1107 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1108 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1109 Safefree(hent);
1110 hent = next;
6e72f9df
PP
1111 }
1112 if (!hent) {
1113 if (++riter > max)
1114 break;
1115 hent = array[riter];
1116 }
1117 }
80459961
NC
1118
1119 Safefree(array);
1120 HvARRAY(PL_strtab) = 0;
1121 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1122 }
3280af22 1123 SvREFCNT_dec(PL_strtab);
6e72f9df 1124
e652bb2f 1125#ifdef USE_ITHREADS
c21d1a0f 1126 /* free the pointer tables used for cloning */
a0739874 1127 ptr_table_free(PL_ptr_table);
bf9cdc68 1128 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1129#endif
a0739874 1130
d33b2eba
GS
1131 /* free special SVs */
1132
1133 SvREFCNT(&PL_sv_yes) = 0;
1134 sv_clear(&PL_sv_yes);
1135 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1136 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1137
1138 SvREFCNT(&PL_sv_no) = 0;
1139 sv_clear(&PL_sv_no);
1140 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1141 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1142
9f375a43
DM
1143 {
1144 int i;
1145 for (i=0; i<=2; i++) {
1146 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1147 sv_clear(PERL_DEBUG_PAD(i));
1148 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1149 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1150 }
1151 }
1152
0453d815 1153 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1154 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1155
eba0f806
DM
1156#ifdef DEBUG_LEAKING_SCALARS
1157 if (PL_sv_count != 0) {
1158 SV* sva;
1159 SV* sv;
eb578fdb 1160 SV* svend;
eba0f806 1161
ad64d0ec 1162 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1163 svend = &sva[SvREFCNT(sva)];
1164 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1165 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1166 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1167 " flags=0x%"UVxf
fd0854ff 1168 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1169 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1170 "serial %"UVuf"\n",
574b8821
NC
1171 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1172 pTHX__VALUE,
fd0854ff
DM
1173 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1174 sv->sv_debug_line,
1175 sv->sv_debug_inpad ? "for" : "by",
1176 sv->sv_debug_optype ?
1177 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1178 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1179 sv->sv_debug_serial
fd0854ff 1180 );
2aa47728 1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1182 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1183#endif
eba0f806
DM
1184 }
1185 }
1186 }
1187 }
2aa47728
NC
1188#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1189 {
1190 int status;
1191 fd_set rset;
1192 /* Wait for up to 4 seconds for child to terminate.
1193 This seems to be the least effort way of timing out on reaping
1194 its exit status. */
1195 struct timeval waitfor = {4, 0};
41e4abd8 1196 int sock = PL_dumper_fd;
2aa47728
NC
1197
1198 shutdown(sock, 1);
1199 FD_ZERO(&rset);
1200 FD_SET(sock, &rset);
1201 select(sock + 1, &rset, NULL, NULL, &waitfor);
1202 waitpid(child, &status, WNOHANG);
1203 close(sock);
1204 }
1205#endif
eba0f806 1206#endif
77abb4c6
NC
1207#ifdef DEBUG_LEAKING_SCALARS_ABORT
1208 if (PL_sv_count)
1209 abort();
1210#endif
bf9cdc68 1211 PL_sv_count = 0;
eba0f806 1212
56a2bab7 1213#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1214 /* No more IO - including error messages ! */
1215 PerlIO_cleanup(aTHX);
1216#endif
1217
9f4bd222 1218 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1219 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1220 for no arg - and will try and SvREFCNT_dec it.
1221 */
1222 SvREFCNT(&PL_sv_undef) = 0;
1223 SvREADONLY_off(&PL_sv_undef);
1224
3280af22 1225 Safefree(PL_origfilename);
bd61b366 1226 PL_origfilename = NULL;
43c5f42d 1227 Safefree(PL_reg_curpm);
82ba1be6 1228 Safefree(PL_reg_poscache);
dd28f7bb 1229 free_tied_hv_pool();
3280af22 1230 Safefree(PL_op_mask);
cf36064f 1231 Safefree(PL_psig_name);
bf9cdc68 1232 PL_psig_name = (SV**)NULL;
d525a7b2 1233 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1234 {
1235 /* We need to NULL PL_psig_pend first, so that
1236 signal handlers know not to use it */
1237 int *psig_save = PL_psig_pend;
1238 PL_psig_pend = (int*)NULL;
1239 Safefree(psig_save);
1240 }
6e72f9df 1241 nuke_stacks();
284167a5
SM
1242 TAINTING_set(FALSE);
1243 TAINT_WARN_set(FALSE);
3280af22 1244 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1245 PL_debug = 0;
ac27b0f5 1246
a0d0e21e 1247 DEBUG_P(debprofdump());
d33b2eba 1248
e5dd39fc 1249#ifdef USE_REENTRANT_API
10bc17b6 1250 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1251#endif
1252
612f20c3
GS
1253 sv_free_arenas();
1254
5d9a96ca
DM
1255 while (PL_regmatch_slab) {
1256 regmatch_slab *s = PL_regmatch_slab;
1257 PL_regmatch_slab = PL_regmatch_slab->next;
1258 Safefree(s);
1259 }
1260
fc36a67e
PP
1261 /* As the absolutely last thing, free the non-arena SV for mess() */
1262
3280af22 1263 if (PL_mess_sv) {
f350b448
NC
1264 /* we know that type == SVt_PVMG */
1265
9c63abab 1266 /* it could have accumulated taint magic */
f350b448
NC
1267 MAGIC* mg;
1268 MAGIC* moremagic;
1269 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1270 moremagic = mg->mg_moremagic;
1271 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1272 && mg->mg_len >= 0)
1273 Safefree(mg->mg_ptr);
1274 Safefree(mg);
9c63abab 1275 }
f350b448 1276
fc36a67e 1277 /* we know that type >= SVt_PV */
8bd4d4c5 1278 SvPV_free(PL_mess_sv);
3280af22
NIS
1279 Safefree(SvANY(PL_mess_sv));
1280 Safefree(PL_mess_sv);
a0714e2c 1281 PL_mess_sv = NULL;
fc36a67e 1282 }
37038d91 1283 return STATUS_EXIT;
79072805
LW
1284}
1285
954c1994
GS
1286/*
1287=for apidoc perl_free
1288
1289Releases a Perl interpreter. See L<perlembed>.
1290
1291=cut
1292*/
1293
79072805 1294void
0cb96387 1295perl_free(pTHXx)
79072805 1296{
5174512c
NC
1297 dVAR;
1298
7918f24d
NC
1299 PERL_ARGS_ASSERT_PERL_FREE;
1300
c301d606
DM
1301 if (PL_veto_cleanup)
1302 return;
1303
7cb608b5 1304#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1305 {
1306 /*
1307 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1308 * value as we're probably hunting memory leaks then
1309 */
36e77d41 1310 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1311 const U32 old_debug = PL_debug;
55ef9aae
MHM
1312 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1313 thread at thread exit. */
4fd0a9b8
NC
1314 if (DEBUG_m_TEST) {
1315 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1316 "free this thread's memory\n");
1317 PL_debug &= ~ DEBUG_m_FLAG;
1318 }
55ef9aae
MHM
1319 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1320 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1321 PL_debug = old_debug;
55ef9aae
MHM
1322 }
1323 }
7cb608b5
NC
1324#endif
1325
acfe0abc 1326#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1327# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1328 {
acfe0abc 1329# ifdef NETWARE
7af12a34 1330 void *host = nw_internal_host;
acfe0abc 1331# else
7af12a34 1332 void *host = w32_internal_host;
acfe0abc 1333# endif
7af12a34 1334 PerlMem_free(aTHXx);
acfe0abc 1335# ifdef NETWARE
7af12a34 1336 nw_delete_internal_host(host);
acfe0abc 1337# else
7af12a34 1338 win32_delete_internal_host(host);
acfe0abc 1339# endif
7af12a34 1340 }
1c0ca838
GS
1341# else
1342 PerlMem_free(aTHXx);
1343# endif
acfe0abc
GS
1344#else
1345 PerlMem_free(aTHXx);
76e3520e 1346#endif
79072805
LW
1347}
1348
b7f7fff6 1349#if defined(USE_ITHREADS)
aebd1ac7
GA
1350/* provide destructors to clean up the thread key when libperl is unloaded */
1351#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1352
826955bd 1353#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1354#pragma fini "perl_fini"
666ad1ec
GA
1355#elif defined(__sun) && !defined(__GNUC__)
1356#pragma fini (perl_fini)
aebd1ac7
GA
1357#endif
1358
0dbb1585
AL
1359static void
1360#if defined(__GNUC__)
1361__attribute__((destructor))
aebd1ac7 1362#endif
de009b76 1363perl_fini(void)
aebd1ac7 1364{
27da23d5 1365 dVAR;
c301d606 1366 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1367 FREE_THREAD_KEY;
1368}
1369
1370#endif /* WIN32 */
1371#endif /* THREADS */
1372
4b556e6c 1373void
864dbfa3 1374Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1375{
97aff369 1376 dVAR;
3280af22
NIS
1377 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1378 PL_exitlist[PL_exitlistlen].fn = fn;
1379 PL_exitlist[PL_exitlistlen].ptr = ptr;
1380 ++PL_exitlistlen;
4b556e6c
JD
1381}
1382
b7975bdd
NC
1383STATIC void
1384S_set_caret_X(pTHX) {
97aff369 1385 dVAR;
fafc274c 1386 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1387 if (tmpgv) {
0f1723e1 1388 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1389#if defined(OS2)
1390 sv_setpv(caret_x, os2_execname(aTHX));
1391#else
2982a345
NC
1392# ifdef USE_KERN_PROC_PATHNAME
1393 size_t size = 0;
1394 int mib[4];
1395 mib[0] = CTL_KERN;
1396 mib[1] = KERN_PROC;
1397 mib[2] = KERN_PROC_PATHNAME;
1398 mib[3] = -1;
1399
1400 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1401 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1402 sv_grow(caret_x, size);
1403
1404 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1405 && size > 2) {
1406 SvPOK_only(caret_x);
1407 SvCUR_set(caret_x, size - 1);
1408 SvTAINT(caret_x);
1409 return;
1410 }
1411 }
ae60cb46
NC
1412# elif defined(USE_NSGETEXECUTABLEPATH)
1413 char buf[1];
1414 uint32_t size = sizeof(buf);
ae60cb46
NC
1415
1416 _NSGetExecutablePath(buf, &size);
1417 if (size < MAXPATHLEN * MAXPATHLEN) {
1418 sv_grow(caret_x, size);
1419 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1420 char *const tidied = realpath(SvPVX(caret_x), NULL);
1421 if (tidied) {
1422 sv_setpv(caret_x, tidied);
1423 free(tidied);
1424 } else {
1425 SvPOK_only(caret_x);
1426 SvCUR_set(caret_x, size);
1427 }
1428 return;
1429 }
1430 }
2982a345 1431# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1432 char buf[MAXPATHLEN];
1433 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1434
1435 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1436 includes a spurious NUL which will cause $^X to fail in system
1437 or backticks (this will prevent extensions from being built and
1438 many tests from working). readlink is not meant to add a NUL.
1439 Normal readlink works fine.
1440 */
1441 if (len > 0 && buf[len-1] == '\0') {
1442 len--;
1443 }
1444
1445 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1446 returning the text "unknown" from the readlink rather than the path
1447 to the executable (or returning an error from the readlink). Any
1448 valid path has a '/' in it somewhere, so use that to validate the
1449 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1450 */
1451 if (len > 0 && memchr(buf, '/', len)) {
1452 sv_setpvn(caret_x, buf, len);
82552a95 1453 return;
700dd4f8 1454 }
82552a95
NC
1455# endif
1456 /* Fallback to this: */
0f1723e1 1457 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1458#endif
b7975bdd
NC
1459 }
1460}
1461
954c1994
GS
1462/*
1463=for apidoc perl_parse
1464
1465Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1466
1467=cut
1468*/
1469
03d9f026
FC
1470#define SET_CURSTASH(newstash) \
1471 if (PL_curstash != newstash) { \
1472 SvREFCNT_dec(PL_curstash); \
1473 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1474 }
1475
79072805 1476int
0cb96387 1477perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1478{
27da23d5 1479 dVAR;
6224f72b 1480 I32 oldscope;
6224f72b 1481 int ret;
db36c5a1 1482 dJMPENV;
8d063cd8 1483
7918f24d
NC
1484 PERL_ARGS_ASSERT_PERL_PARSE;
1485#ifndef MULTIPLICITY
ed6c66dd 1486 PERL_UNUSED_ARG(my_perl);
7918f24d 1487#endif
7dc86639 1488#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1489 {
7dc86639
YO
1490 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1491
1492 if (s && (atoi(s) == 1)) {
1493 unsigned char *seed= PERL_HASH_SEED;
1494 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1495 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1496 while (seed < seed_end) {
1497 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1498 }
1499 PerlIO_printf(Perl_debug_log, "\n");
1500 }
b0891165
JH
1501 }
1502#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1503 PL_origargc = argc;
e2975953 1504 PL_origargv = argv;
a0d0e21e 1505
a2722ac9
GA
1506 if (PL_origalen != 0) {
1507 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1508 }
1509 else {
3cb9023d
JH
1510 /* Set PL_origalen be the sum of the contiguous argv[]
1511 * elements plus the size of the env in case that it is
e9137a8e 1512 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1513 * as the maximum modifiable length of $0. In the worst case
1514 * the area we are able to modify is limited to the size of
43c32782 1515 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1516 * --jhi */
e1ec3a88 1517 const char *s = NULL;
54bfe034 1518 int i;
1b6737cc 1519 const UV mask =
7d8e7db3 1520 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1521 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1522 const UV aligned =
43c32782
JH
1523 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1524
1525 /* See if all the arguments are contiguous in memory. Note
1526 * that 'contiguous' is a loose term because some platforms
1527 * align the argv[] and the envp[]. If the arguments look
1528 * like non-aligned, assume that they are 'strictly' or
1529 * 'traditionally' contiguous. If the arguments look like
1530 * aligned, we just check that they are within aligned
1531 * PTRSIZE bytes. As long as no system has something bizarre
1532 * like the argv[] interleaved with some other data, we are
1533 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1534 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1535 while (*s) s++;
1536 for (i = 1; i < PL_origargc; i++) {
1537 if ((PL_origargv[i] == s + 1
43c32782 1538#ifdef OS2
c8941eeb 1539 || PL_origargv[i] == s + 2
43c32782 1540#endif
c8941eeb
JH
1541 )
1542 ||
1543 (aligned &&
1544 (PL_origargv[i] > s &&
1545 PL_origargv[i] <=
1546 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1547 )
1548 {
1549 s = PL_origargv[i];
1550 while (*s) s++;
1551 }
1552 else
1553 break;
54bfe034 1554 }
54bfe034 1555 }
a4a109c2
JD
1556
1557#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1558 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1559 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1560 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1561 ||
1562 (aligned &&
1563 (PL_origenviron[0] > s &&
1564 PL_origenviron[0] <=
1565 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1566 )
1567 {
9d419b5f 1568#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1569 s = PL_origenviron[0];
1570 while (*s) s++;
1571#endif
bd61b366 1572 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1573 /* Force copy of environment. */
1574 for (i = 1; PL_origenviron[i]; i++) {
1575 if (PL_origenviron[i] == s + 1
1576 ||
1577 (aligned &&
1578 (PL_origenviron[i] > s &&
1579 PL_origenviron[i] <=
1580 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1581 )
1582 {
1583 s = PL_origenviron[i];
1584 while (*s) s++;
1585 }
1586 else
1587 break;
54bfe034 1588 }
43c32782 1589 }
54bfe034 1590 }
a4a109c2
JD
1591#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1592
2d2af554 1593 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1594 }
1595
3280af22 1596 if (PL_do_undump) {
a0d0e21e
LW
1597
1598 /* Come here if running an undumped a.out. */
1599
3280af22
NIS
1600 PL_origfilename = savepv(argv[0]);
1601 PL_do_undump = FALSE;
a0d0e21e 1602 cxstack_ix = -1; /* start label stack again */
748a9306 1603 init_ids();
284167a5 1604 assert (!TAINT_get);
b7975bdd
NC
1605 TAINT;
1606 S_set_caret_X(aTHX);
1607 TAINT_NOT;
a0d0e21e
LW
1608 init_postdump_symbols(argc,argv,env);
1609 return 0;
1610 }
1611
3280af22 1612 if (PL_main_root) {
3280af22 1613 op_free(PL_main_root);
5f66b61c 1614 PL_main_root = NULL;
ff0cee69 1615 }
5f66b61c 1616 PL_main_start = NULL;
3280af22 1617 SvREFCNT_dec(PL_main_cv);
601f1833 1618 PL_main_cv = NULL;
79072805 1619
3280af22
NIS
1620 time(&PL_basetime);
1621 oldscope = PL_scopestack_ix;
599cee73 1622 PL_dowarn = G_WARN_OFF;
f86702cc 1623
14dd3ad8 1624 JMPENV_PUSH(ret);
6224f72b 1625 switch (ret) {
312caa8e 1626 case 0:
14dd3ad8 1627 parse_body(env,xsinit);
9ebf26ad 1628 if (PL_unitcheckav) {
3c10abe3 1629 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1630 }
1631 if (PL_checkav) {
ca7b837b 1632 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1633 call_list(oldscope, PL_checkav);
9ebf26ad 1634 }
14dd3ad8
GS
1635 ret = 0;
1636 break;
6224f72b
GS
1637 case 1:
1638 STATUS_ALL_FAILURE;
1639 /* FALL THROUGH */
1640 case 2:
1641 /* my_exit() was called */
3280af22 1642 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1643 LEAVE;
1644 FREETMPS;
03d9f026 1645 SET_CURSTASH(PL_defstash);
9ebf26ad 1646 if (PL_unitcheckav) {
3c10abe3 1647 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1648 }
1649 if (PL_checkav) {
ca7b837b 1650 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1651 call_list(oldscope, PL_checkav);
9ebf26ad 1652 }
37038d91 1653 ret = STATUS_EXIT;
14dd3ad8 1654 break;
6224f72b 1655 case 3:
bf49b057 1656 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1657 ret = 1;
1658 break;
6224f72b 1659 }
14dd3ad8
GS
1660 JMPENV_POP;
1661 return ret;
1662}
1663
4a5df386
NC
1664/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1665 miniperl, and we need to see those flags reflected in the values here. */
1666
1667/* What this returns is subject to change. Use the public interface in Config.
1668 */
1669static void
1670S_Internals_V(pTHX_ CV *cv)
1671{
1672 dXSARGS;
1673#ifdef LOCAL_PATCH_COUNT
1674 const int local_patch_count = LOCAL_PATCH_COUNT;
1675#else
1676 const int local_patch_count = 0;
1677#endif
2dc296d2 1678 const int entries = 3 + local_patch_count;
4a5df386 1679 int i;
fe1c5936 1680 static const char non_bincompat_options[] =
4a5df386
NC
1681# ifdef DEBUGGING
1682 " DEBUGGING"
1683# endif
1684# ifdef NO_MATHOMS
0d311fbe 1685 " NO_MATHOMS"
4a5df386
NC
1686# endif
1687# ifdef PERL_DISABLE_PMC
1688 " PERL_DISABLE_PMC"
1689# endif
1690# ifdef PERL_DONT_CREATE_GVSV
1691 " PERL_DONT_CREATE_GVSV"
1692# endif
9a044a43
NC
1693# ifdef PERL_EXTERNAL_GLOB
1694 " PERL_EXTERNAL_GLOB"
1695# endif
4a5df386
NC
1696# ifdef PERL_IS_MINIPERL
1697 " PERL_IS_MINIPERL"
1698# endif
1699# ifdef PERL_MALLOC_WRAP
1700 " PERL_MALLOC_WRAP"
1701# endif
1702# ifdef PERL_MEM_LOG
1703 " PERL_MEM_LOG"
1704# endif
1705# ifdef PERL_MEM_LOG_NOIMPL
1706 " PERL_MEM_LOG_NOIMPL"
1707# endif
c3cf41ec
NC
1708# ifdef PERL_PRESERVE_IVUV
1709 " PERL_PRESERVE_IVUV"
1710# endif
c051e30b
NC
1711# ifdef PERL_RELOCATABLE_INCPUSH
1712 " PERL_RELOCATABLE_INCPUSH"
1713# endif
4a5df386
NC
1714# ifdef PERL_USE_DEVEL
1715 " PERL_USE_DEVEL"
1716# endif
1717# ifdef PERL_USE_SAFE_PUTENV
1718 " PERL_USE_SAFE_PUTENV"
1719# endif
a3749cf3
NC
1720# ifdef UNLINK_ALL_VERSIONS
1721 " UNLINK_ALL_VERSIONS"
1722# endif
de618ee4
NC
1723# ifdef USE_ATTRIBUTES_FOR_PERLIO
1724 " USE_ATTRIBUTES_FOR_PERLIO"
1725# endif
4a5df386
NC
1726# ifdef USE_FAST_STDIO
1727 " USE_FAST_STDIO"
1728# endif
98548bdf
NC
1729# ifdef USE_LOCALE
1730 " USE_LOCALE"
1731# endif
98548bdf
NC
1732# ifdef USE_LOCALE_CTYPE
1733 " USE_LOCALE_CTYPE"
1734# endif
5a8d8935
NC
1735# ifdef USE_PERL_ATOF
1736 " USE_PERL_ATOF"
1737# endif
0d311fbe
NC
1738# ifdef USE_SITECUSTOMIZE
1739 " USE_SITECUSTOMIZE"
1740# endif
4a5df386
NC
1741 ;
1742 PERL_UNUSED_ARG(cv);
1743 PERL_UNUSED_ARG(items);
1744
1745 EXTEND(SP, entries);
1746
1747 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1748 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1749 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1750
1751#ifdef __DATE__
1752# ifdef __TIME__
1753 PUSHs(Perl_newSVpvn_flags(aTHX_
1754 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1755 SVs_TEMP));
1756# else
1757 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1758 SVs_TEMP));
1759# endif
1760#else
1761 PUSHs(&PL_sv_undef);
1762#endif
1763
4a5df386
NC
1764 for (i = 1; i <= local_patch_count; i++) {
1765 /* This will be an undef, if PL_localpatches[i] is NULL. */
1766 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1767 }
1768
1769 XSRETURN(entries);
1770}
1771
be71fc8f
NC
1772#define INCPUSH_UNSHIFT 0x01
1773#define INCPUSH_ADD_OLD_VERS 0x02
1774#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1775#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1776#define INCPUSH_NOT_BASEDIR 0x10
1777#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1778#define INCPUSH_ADD_SUB_DIRS \
1779 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1780
312caa8e 1781STATIC void *
14dd3ad8 1782S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1783{
27da23d5 1784 dVAR;
2f9285f8 1785 PerlIO *rsfp;
312caa8e 1786 int argc = PL_origargc;
8f42b153 1787 char **argv = PL_origargv;
e1ec3a88 1788 const char *scriptname = NULL;
312caa8e 1789 VOL bool dosearch = FALSE;
eb578fdb 1790 char c;
737c24fc 1791 bool doextract = FALSE;
bd61b366 1792 const char *cddir = NULL;
ab019eaa 1793#ifdef USE_SITECUSTOMIZE
20ef40cf 1794 bool minus_f = FALSE;
ab019eaa 1795#endif
95670bde 1796 SV *linestr_sv = NULL;
5486870f 1797 bool add_read_e_script = FALSE;
87606032 1798 U32 lex_start_flags = 0;
009d90df 1799
ca7b837b 1800 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1801
6224f72b 1802 init_main_stash();
54310121 1803
c7030b81
NC
1804 {
1805 const char *s;
6224f72b
GS
1806 for (argc--,argv++; argc > 0; argc--,argv++) {
1807 if (argv[0][0] != '-' || !argv[0][1])
1808 break;
6224f72b
GS
1809 s = argv[0]+1;
1810 reswitch:
47f56822 1811 switch ((c = *s)) {
729a02f2 1812 case 'C':
1d5472a9
GS
1813#ifndef PERL_STRICT_CR
1814 case '\r':
1815#endif
6224f72b
GS
1816 case ' ':
1817 case '0':
1818 case 'F':
1819 case 'a':
1820 case 'c':
1821 case 'd':
1822 case 'D':
1823 case 'h':
1824 case 'i':
1825 case 'l':
1826 case 'M':
1827 case 'm':
1828 case 'n':
1829 case 'p':
1830 case 's':
1831 case 'u':
1832 case 'U':
1833 case 'v':
599cee73
PM
1834 case 'W':
1835 case 'X':
6224f72b 1836 case 'w':
97bd5664 1837 if ((s = moreswitches(s)))
6224f72b
GS
1838 goto reswitch;
1839 break;
33b78306 1840
1dbad523 1841 case 't':
284167a5
SM
1842#if SILENT_NO_TAINT_SUPPORT
1843 /* silently ignore */
1844#elif NO_TAINT_SUPPORT
1845 Perl_croak("This perl was compiled without taint support. "
1846 "Cowardly refusing to run with -t or -T flags");
1847#else
22f7c9c9 1848 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1849 if( !TAINTING_get ) {
1850 TAINT_WARN_set(TRUE);
1851 TAINTING_set(TRUE);
317ea90d 1852 }
284167a5 1853#endif
317ea90d
MS
1854 s++;
1855 goto reswitch;
6224f72b 1856 case 'T':
284167a5
SM
1857#if SILENT_NO_TAINT_SUPPORT
1858 /* silently ignore */
1859#elif NO_TAINT_SUPPORT
1860 Perl_croak("This perl was compiled without taint support. "
1861 "Cowardly refusing to run with -t or -T flags");
1862#else
22f7c9c9 1863 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1864 TAINTING_set(TRUE);
1865 TAINT_WARN_set(FALSE);
1866#endif
6224f72b
GS
1867 s++;
1868 goto reswitch;
f86702cc 1869
bc9b29db
RH
1870 case 'E':
1871 PL_minus_E = TRUE;
1872 /* FALL THROUGH */
6224f72b 1873 case 'e':
f20b2998 1874 forbid_setid('e', FALSE);
3280af22 1875 if (!PL_e_script) {
396482e1 1876 PL_e_script = newSVpvs("");
5486870f 1877 add_read_e_script = TRUE;
6224f72b
GS
1878 }
1879 if (*++s)
3280af22 1880 sv_catpv(PL_e_script, s);
6224f72b 1881 else if (argv[1]) {
3280af22 1882 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1883 argc--,argv++;
1884 }
1885 else
47f56822 1886 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1887 sv_catpvs(PL_e_script, "\n");
6224f72b 1888 break;
afe37c7d 1889
20ef40cf 1890 case 'f':
f5542d3a 1891#ifdef USE_SITECUSTOMIZE
20ef40cf 1892 minus_f = TRUE;
f5542d3a 1893#endif
20ef40cf
GA
1894 s++;
1895 goto reswitch;
1896
6224f72b 1897 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1898 forbid_setid('I', FALSE);
bd61b366 1899 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1900 argc--,argv++;
1901 }
6224f72b 1902 if (s && *s) {
0df16ed7 1903 STRLEN len = strlen(s);
55b4bc1c 1904 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1905 }
1906 else
a67e862a 1907 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1908 break;
6224f72b 1909 case 'S':
f20b2998 1910 forbid_setid('S', FALSE);
6224f72b
GS
1911 dosearch = TRUE;
1912 s++;
1913 goto reswitch;
1914 case 'V':
7edfd0ef
NC
1915 {
1916 SV *opts_prog;
1917
7edfd0ef 1918 if (*++s != ':') {
37ca4a5b 1919 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1920 }
1921 else {
1922 ++s;
1923 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1924 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1925 0, s, 0);
1926 s += strlen(s);
1927 }
37ca4a5b 1928 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1929 /* don't look for script or read stdin */
1930 scriptname = BIT_BUCKET;
1931 goto reswitch;
6224f72b 1932 }
6224f72b 1933 case 'x':
737c24fc 1934 doextract = TRUE;
6224f72b 1935 s++;
304334da 1936 if (*s)
f4c556ac 1937 cddir = s;
6224f72b
GS
1938 break;
1939 case 0:
1940 break;
1941 case '-':
1942 if (!*++s || isSPACE(*s)) {
1943 argc--,argv++;
1944 goto switch_end;
1945 }
ee8bc8b7
NC
1946 /* catch use of gnu style long options.
1947 Both of these exit immediately. */
1948 if (strEQ(s, "version"))
1949 minus_v();
1950 if (strEQ(s, "help"))
1951 usage();
6224f72b
GS
1952 s--;
1953 /* FALL THROUGH */
1954 default:
cea2e8a9 1955 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1956 }
1957 }
c7030b81
NC
1958 }
1959
6224f72b 1960 switch_end:
54310121 1961
c7030b81
NC
1962 {
1963 char *s;
1964
f675dbe5
CB
1965 if (
1966#ifndef SECURE_INTERNAL_GETENV
284167a5 1967 !TAINTING_get &&
f675dbe5 1968#endif
cf756827 1969 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1970 {
74288ac8
GS
1971 while (isSPACE(*s))
1972 s++;
317ea90d 1973 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
1974#if SILENT_NO_TAINT_SUPPORT
1975 /* silently ignore */
1976#elif NO_TAINT_SUPPORT
1977 Perl_croak("This perl was compiled without taint support. "
1978 "Cowardly refusing to run with -t or -T flags");
1979#else
22f7c9c9 1980 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1981 TAINTING_set(TRUE);
1982 TAINT_WARN_set(FALSE);
1983#endif
317ea90d 1984 }
74288ac8 1985 else {
bd61b366 1986 char *popt_copy = NULL;
74288ac8 1987 while (s && *s) {
54913509 1988 const char *d;
74288ac8
GS
1989 while (isSPACE(*s))
1990 s++;
1991 if (*s == '-') {
1992 s++;
1993 if (isSPACE(*s))
1994 continue;
1995 }
4ea8f8fb 1996 d = s;
74288ac8
GS
1997 if (!*s)
1998 break;
2b622f1a 1999 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2000 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2001 while (++s && *s) {
2002 if (isSPACE(*s)) {
cf756827 2003 if (!popt_copy) {
bfa6c418
NC
2004 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2005 s = popt_copy + (s - d);
2006 d = popt_copy;
cf756827 2007 }
4ea8f8fb
MS
2008 *s++ = '\0';
2009 break;
2010 }
2011 }
1c4db469 2012 if (*d == 't') {
284167a5
SM
2013#if SILENT_NO_TAINT_SUPPORT
2014 /* silently ignore */
2015#elif NO_TAINT_SUPPORT
2016 Perl_croak("This perl was compiled without taint support. "
2017 "Cowardly refusing to run with -t or -T flags");
2018#else
2019 if( !TAINTING_get) {
2020 TAINT_WARN_set(TRUE);
2021 TAINTING_set(TRUE);
317ea90d 2022 }
284167a5 2023#endif
1c4db469 2024 } else {
97bd5664 2025 moreswitches(d);
1c4db469 2026 }
6224f72b 2027 }
6224f72b
GS
2028 }
2029 }
c7030b81 2030 }
a0d0e21e 2031
c29067d7
CH
2032 /* Set $^X early so that it can be used for relocatable paths in @INC */
2033 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2034 assert (!TAINT_get);
c29067d7
CH
2035 TAINT;
2036 S_set_caret_X(aTHX);
2037 TAINT_NOT;
2038
43c0c913 2039#if defined(USE_SITECUSTOMIZE)
20ef40cf 2040 if (!minus_f) {
43c0c913 2041 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2042 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2043 ie a q() operator with a NUL byte as a the delimiter. This avoids
2044 problems with pathnames containing (say) ' */
43c0c913
NC
2045# ifdef PERL_IS_MINIPERL
2046 AV *const inc = GvAV(PL_incgv);
2047 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2048
2049 if (inc0) {
2050 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2051 Perl_newSVpvf(aTHX_
fc81b718
NC
2052 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2053 0, *inc0, 0,
2054 0, *inc0, 0));
43c0c913
NC
2055 }
2056# else
2057 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2058 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2059 if (raw_sitelib) {
2060 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2061 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2062 INCPUSH_CAN_RELOCATE);
2063 const char *const sitelib = SvPVX(sitelib_sv);
2064 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2065 Perl_newSVpvf(aTHX_
2066 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2067 0, sitelib, 0,
2068 0, sitelib, 0));
2069 assert (SvREFCNT(sitelib_sv) == 1);
2070 SvREFCNT_dec(sitelib_sv);
2071 }
43c0c913 2072# endif
20ef40cf
GA
2073 }
2074#endif
2075
6224f72b
GS
2076 if (!scriptname)
2077 scriptname = argv[0];
3280af22 2078 if (PL_e_script) {
6224f72b
GS
2079 argc++,argv--;
2080 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2081 }
bd61b366 2082 else if (scriptname == NULL) {
6224f72b
GS
2083#ifdef MSDOS
2084 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2085 moreswitches("h");
6224f72b
GS
2086#endif
2087 scriptname = "-";
2088 }
2089
284167a5 2090 assert (!TAINT_get);
2cace6ac 2091 init_perllib();
6224f72b 2092
a52eba0e 2093 {
f20b2998 2094 bool suidscript = FALSE;
829372d3 2095
8d113837 2096 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2097 if (!rsfp) {
2098 rsfp = PerlIO_stdin();
87606032 2099 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2100 }
6224f72b 2101
b24bc095 2102 validate_suid(rsfp);
6224f72b 2103
64ca3a65 2104#ifndef PERL_MICRO
a52eba0e
NC
2105# if defined(SIGCHLD) || defined(SIGCLD)
2106 {
2107# ifndef SIGCHLD
2108# define SIGCHLD SIGCLD
2109# endif
2110 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2111 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2112 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2113 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2114 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2115 }
0b5b802d 2116 }
a52eba0e 2117# endif
64ca3a65 2118#endif
0b5b802d 2119
737c24fc 2120 if (doextract) {
faef540c 2121
f20b2998 2122 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2123 setuid scripts. */
2124 forbid_setid('x', suidscript);
f20b2998 2125 /* Hence you can't get here if suidscript is true */
faef540c 2126
95670bde
NC
2127 linestr_sv = newSV_type(SVt_PV);
2128 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2129 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2130 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2131 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2132 }
f4c556ac 2133 }
6224f72b 2134
ea726b52 2135 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2136 CvUNIQUE_on(PL_compcv);
2137
dd2155a4 2138 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2139
dd69841b
BB
2140 PL_isarev = newHV();
2141
0c4f7ff0 2142 boot_core_PerlIO();
6224f72b 2143 boot_core_UNIVERSAL();
e1a479c5 2144 boot_core_mro();
4a5df386 2145 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2146
2147 if (xsinit)
acfe0abc 2148 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2149#ifndef PERL_MICRO
739a0b84 2150#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2151 init_os_extras();
6224f72b 2152#endif
64ca3a65 2153#endif
6224f72b 2154
29209bc5 2155#ifdef USE_SOCKS
1b9c9cf5
DH
2156# ifdef HAS_SOCKS5_INIT
2157 socks5_init(argv[0]);
2158# else
29209bc5 2159 SOCKSinit(argv[0]);
1b9c9cf5 2160# endif
ac27b0f5 2161#endif
29209bc5 2162
6224f72b
GS
2163 init_predump_symbols();
2164 /* init_postdump_symbols not currently designed to be called */
2165 /* more than once (ENV isn't cleared first, for example) */
2166 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2167 if (!PL_do_undump)
6224f72b
GS
2168 init_postdump_symbols(argc,argv,env);
2169
27da23d5
JH
2170 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2171 * or explicitly in some platforms.
085a54d9 2172 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2173 * look like the user wants to use UTF-8. */
a0fd4948 2174#if defined(__SYMBIAN32__)
27da23d5
JH
2175 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2176#endif
e27b5b51 2177# ifndef PERL_IS_MINIPERL
06e66572
JH
2178 if (PL_unicode) {
2179 /* Requires init_predump_symbols(). */
a05d7ebb 2180 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2181 IO* io;
2182 PerlIO* fp;
2183 SV* sv;
2184
a05d7ebb 2185 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2186 * and the default open disciplines. */
a05d7ebb
JH
2187 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2188 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2189 (fp = IoIFP(io)))
2190 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2191 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2192 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2193 (fp = IoOFP(io)))
2194 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2195 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2196 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2197 (fp = IoOFP(io)))
2198 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2199 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2200 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2201 SVt_PV)))) {
a05d7ebb
JH
2202 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2203 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2204 if (in) {
2205 if (out)
76f68e9b 2206 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2207 else
76f68e9b 2208 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2209 }
2210 else if (out)
76f68e9b 2211 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2212 SvSETMAGIC(sv);
2213 }
b310b053
JH
2214 }
2215 }
e27b5b51 2216#endif
b310b053 2217
c7030b81
NC
2218 {
2219 const char *s;
4ffa73a3
JH
2220 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2221 if (strEQ(s, "unsafe"))
2222 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2223 else if (strEQ(s, "safe"))
2224 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2225 else
2226 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2227 }
c7030b81 2228 }
4ffa73a3 2229
81d86705 2230#ifdef PERL_MAD
c7030b81
NC
2231 {
2232 const char *s;
284167a5 2233 if (!TAINTING_get &&
2cc12391 2234 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2235 PL_madskills = 1;
2236 PL_minus_c = 1;
2237 if (!s || !s[0])
2238 PL_xmlfp = PerlIO_stdout();
2239 else {
2240 PL_xmlfp = PerlIO_open(s, "w");
2241 if (!PL_xmlfp)
2242 Perl_croak(aTHX_ "Can't open %s", s);
2243 }
1a9a51d4 2244 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2245 }
c7030b81
NC
2246 }
2247
2248 {
2249 const char *s;
81d86705
NC
2250 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2251 PL_madskills = atoi(s);
1a9a51d4 2252 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2253 }
c7030b81 2254 }
81d86705
NC
2255#endif
2256
87606032 2257 lex_start(linestr_sv, rsfp, lex_start_flags);
95670bde
NC
2258 if(linestr_sv)
2259 SvREFCNT_dec(linestr_sv);
2260
219f7226 2261 PL_subname = newSVpvs("main");
6224f72b 2262
5486870f
DM
2263 if (add_read_e_script)
2264 filter_add(read_e_script, NULL);
2265
6224f72b
GS
2266 /* now parse the script */
2267
93189314 2268 SETERRNO(0,SS_NORMAL);
28ac2b49 2269 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2270 if (PL_minus_c)
cea2e8a9 2271 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2272 else {
cea2e8a9 2273 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2274 PL_origfilename);
6224f72b
GS
2275 }
2276 }
57843af0 2277 CopLINE_set(PL_curcop, 0);
03d9f026 2278 SET_CURSTASH(PL_defstash);
3280af22
NIS
2279 if (PL_e_script) {
2280 SvREFCNT_dec(PL_e_script);
a0714e2c 2281 PL_e_script = NULL;
6224f72b
GS
2282 }
2283
3280af22 2284 if (PL_do_undump)
6224f72b
GS
2285 my_unexec();
2286
57843af0
GS
2287 if (isWARN_ONCE) {
2288 SAVECOPFILE(PL_curcop);
2289 SAVECOPLINE(PL_curcop);
3280af22 2290 gv_check(PL_defstash);
57843af0 2291 }
6224f72b
GS
2292
2293 LEAVE;
2294 FREETMPS;
2295
2296#ifdef MYMALLOC
f6a607bc
RGS
2297 {
2298 const char *s;
6224f72b
GS
2299 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2300 dump_mstats("after compilation:");
f6a607bc 2301 }
6224f72b
GS
2302#endif
2303
2304 ENTER;
febb3a6d 2305 PL_restartjmpenv = NULL;
3280af22 2306 PL_restartop = 0;
312caa8e 2307 return NULL;
6224f72b
GS
2308}
2309
954c1994
GS
2310/*
2311=for apidoc perl_run
2312
2313Tells a Perl interpreter to run. See L<perlembed>.
2314
2315=cut
2316*/
2317
6224f72b 2318int
0cb96387 2319perl_run(pTHXx)
6224f72b 2320{
97aff369 2321 dVAR;
6224f72b 2322 I32 oldscope;
14dd3ad8 2323 int ret = 0;
db36c5a1 2324 dJMPENV;
6224f72b 2325
7918f24d
NC
2326 PERL_ARGS_ASSERT_PERL_RUN;
2327#ifndef MULTIPLICITY
ed6c66dd 2328 PERL_UNUSED_ARG(my_perl);
7918f24d 2329#endif
9d4ba2ae 2330
3280af22 2331 oldscope = PL_scopestack_ix;
96e176bf
CL
2332#ifdef VMS
2333 VMSISH_HUSHED = 0;
2334#endif
6224f72b 2335
14dd3ad8 2336 JMPENV_PUSH(ret);
6224f72b
GS
2337 switch (ret) {
2338 case 1:
2339 cxstack_ix = -1; /* start context stack again */
312caa8e 2340 goto redo_body;
14dd3ad8 2341 case 0: /* normal completion */
14dd3ad8
GS
2342 redo_body:
2343 run_body(oldscope);
14dd3ad8
GS
2344 /* FALL THROUGH */
2345 case 2: /* my_exit() */
3280af22 2346 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2347 LEAVE;
2348 FREETMPS;
03d9f026 2349 SET_CURSTASH(PL_defstash);
3a1ee7e8 2350 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2351 PL_endav && !PL_minus_c) {
ca7b837b 2352 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2353 call_list(oldscope, PL_endav);
9ebf26ad 2354 }
6224f72b
GS
2355#ifdef MYMALLOC
2356 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2357 dump_mstats("after execution: ");
2358#endif
37038d91 2359 ret = STATUS_EXIT;
14dd3ad8 2360 break;
6224f72b 2361 case 3:
312caa8e
CS
2362 if (PL_restartop) {
2363 POPSTACK_TO(PL_mainstack);
2364 goto redo_body;
6224f72b 2365 }
5637ef5b 2366 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2367 FREETMPS;
14dd3ad8
GS
2368 ret = 1;
2369 break;
6224f72b
GS
2370 }
2371
14dd3ad8
GS
2372 JMPENV_POP;
2373 return ret;
312caa8e
CS
2374}
2375
dd374669 2376STATIC void
14dd3ad8
GS
2377S_run_body(pTHX_ I32 oldscope)
2378{
97aff369 2379 dVAR;
d3b97530
DM
2380 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2381 PL_sawampersand ? "Enabling" : "Omitting",
2382 (unsigned int)(PL_sawampersand)));
6224f72b 2383
3280af22 2384 if (!PL_restartop) {
81d86705
NC
2385#ifdef PERL_MAD
2386 if (PL_xmlfp) {
2387 xmldump_all();
2388 exit(0); /* less likely to core dump than my_exit(0) */
2389 }
2390#endif
cf2782cd 2391#ifdef DEBUGGING
f0e3f042
CS
2392 if (DEBUG_x_TEST || DEBUG_B_TEST)
2393 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2394 if (!DEBUG_q_TEST)
2395 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2396#endif
6224f72b 2397
3280af22 2398 if (PL_minus_c) {
bf49b057 2399 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2400 my_exit(0);
2401 }
3280af22 2402 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2403 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2404 if (PL_initav) {
ca7b837b 2405 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2406 call_list(oldscope, PL_initav);
9ebf26ad 2407 }
f1fac472 2408#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2409 if (PL_main_root && PL_main_root->op_slabbed)
2410 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2411#endif
6224f72b
GS
2412 }
2413
2414 /* do it */
2415
ca7b837b 2416 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2417
3280af22 2418 if (PL_restartop) {
febb3a6d 2419 PL_restartjmpenv = NULL;
533c011a 2420 PL_op = PL_restartop;
3280af22 2421 PL_restartop = 0;
cea2e8a9 2422 CALLRUNOPS(aTHX);
6224f72b 2423 }
3280af22
NIS
2424 else if (PL_main_start) {
2425 CvDEPTH(PL_main_cv) = 1;
533c011a 2426 PL_op = PL_main_start;
cea2e8a9 2427 CALLRUNOPS(aTHX);
6224f72b 2428 }
f6b3007c 2429 my_exit(0);
118e2215 2430 assert(0); /* NOTREACHED */
6224f72b
GS
2431}
2432
954c1994 2433/*
ccfc67b7
JH
2434=head1 SV Manipulation Functions
2435
954c1994
GS
2436=for apidoc p||get_sv
2437
64ace3f8
NC
2438Returns the SV of the specified Perl scalar. C<flags> are passed to
2439C<gv_fetchpv>. If C<GV_ADD> is set and the
2440Perl variable does not exist then it will be created. If C<flags> is zero
2441and the variable does not exist then NULL is returned.
954c1994
GS
2442
2443=cut
2444*/
2445
6224f72b 2446SV*
64ace3f8 2447Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2448{
2449 GV *gv;
7918f24d
NC
2450
2451 PERL_ARGS_ASSERT_GET_SV;
2452
64ace3f8 2453 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2454 if (gv)
2455 return GvSV(gv);
a0714e2c 2456 return NULL;
6224f72b
GS
2457}
2458
954c1994 2459/*
ccfc67b7
JH
2460=head1 Array Manipulation Functions
2461
954c1994
GS
2462=for apidoc p||get_av
2463
f0b90de1
SF
2464Returns the AV of the specified Perl global or package array with the given
2465name (so it won't work on lexical variables). C<flags> are passed
2466to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2467Perl variable does not exist then it will be created. If C<flags> is zero
2468and the variable does not exist then NULL is returned.
954c1994 2469
f0b90de1
SF
2470Perl equivalent: C<@{"$name"}>.
2471
954c1994
GS
2472=cut
2473*/
2474
6224f72b 2475AV*
cbfd0a87 2476Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2477{
cbfd0a87 2478 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2479
2480 PERL_ARGS_ASSERT_GET_AV;
2481
cbfd0a87 2482 if (flags)
6224f72b
GS
2483 return GvAVn(gv);
2484 if (gv)
2485 return GvAV(gv);
7d49f689 2486 return NULL;
6224f72b
GS
2487}
2488
954c1994 2489/*
ccfc67b7
JH
2490=head1 Hash Manipulation Functions
2491
954c1994
GS
2492=for apidoc p||get_hv
2493
6673a63c
NC
2494Returns the HV of the specified Perl hash. C<flags> are passed to
2495C<gv_fetchpv>. If C<GV_ADD> is set and the
2496Perl variable does not exist then it will be created. If C<flags> is zero
2497and the variable does not exist then NULL is returned.
954c1994
GS
2498
2499=cut
2500*/
2501
6224f72b 2502HV*
6673a63c 2503Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2504{
6673a63c 2505 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2506
2507 PERL_ARGS_ASSERT_GET_HV;
2508
6673a63c 2509 if (flags)
a0d0e21e
LW
2510 return GvHVn(gv);
2511 if (gv)
2512 return GvHV(gv);
5c284bb0 2513 return NULL;
a0d0e21e
LW
2514}
2515
954c1994 2516/*
ccfc67b7
JH
2517=head1 CV Manipulation Functions
2518
780a5241
NC
2519=for apidoc p||get_cvn_flags
2520
2521Returns the CV of the specified Perl subroutine. C<flags> are passed to
2522C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2523exist then it will be declared (which has the same effect as saying
2524C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2525then NULL is returned.
2526
954c1994
GS
2527=for apidoc p||get_cv
2528
780a5241 2529Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2530
2531=cut
2532*/
2533
a0d0e21e 2534CV*
780a5241 2535Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2536{
780a5241 2537 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2538
2539 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2540
334dda80
FC
2541 /* XXX this is probably not what they think they're getting.
2542 * It has the same effect as "sub name;", i.e. just a forward
2543 * declaration! */
780a5241 2544 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2545 return newSTUB(gv,0);
780a5241 2546 }
a0d0e21e 2547 if (gv)
8ebc5c01 2548 return GvCVu(gv);
601f1833 2549 return NULL;
a0d0e21e
LW
2550}
2551
2c67934f
NC
2552/* Nothing in core calls this now, but we can't replace it with a macro and
2553 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2554CV*
2555Perl_get_cv(pTHX_ const char *name, I32 flags)
2556{
7918f24d
NC
2557 PERL_ARGS_ASSERT_GET_CV;
2558
780a5241
NC
2559 return get_cvn_flags(name, strlen(name), flags);
2560}
2561
79072805
LW
2562/* Be sure to refetch the stack pointer after calling these routines. */
2563
954c1994 2564/*
ccfc67b7
JH
2565
2566=head1 Callback Functions
2567
954c1994
GS
2568=for apidoc p||call_argv
2569
f0b90de1
SF
2570Performs a callback to the specified named and package-scoped Perl subroutine
2571with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2572
2573Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2574
2575=cut
2576*/
2577
a0d0e21e 2578I32
5aaab254 2579Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2580
8ac85365
NIS
2581 /* See G_* flags in cop.h */
2582 /* null terminated arg list */
8990e307 2583{
97aff369 2584 dVAR;
a0d0e21e 2585 dSP;
8990e307 2586
7918f24d
NC
2587 PERL_ARGS_ASSERT_CALL_ARGV;
2588
924508f0 2589 PUSHMARK(SP);
a0d0e21e 2590 if (argv) {
8990e307 2591 while (*argv) {
6e449a3a 2592 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2593 argv++;
2594 }
a0d0e21e 2595 PUTBACK;
8990e307 2596 }
864dbfa3 2597 return call_pv(sub_name, flags);
8990e307
LW
2598}
2599
954c1994
GS
2600/*
2601=for apidoc p||call_pv
2602
2603Performs a callback to the specified Perl sub. See L<perlcall>.
2604
2605=cut
2606*/
2607
a0d0e21e 2608I32
864dbfa3 2609Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2610 /* name of the subroutine */
2611 /* See G_* flags in cop.h */
a0d0e21e 2612{
7918f24d
NC
2613 PERL_ARGS_ASSERT_CALL_PV;
2614
0da0e728 2615 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2616}
2617
954c1994
GS
2618/*
2619=for apidoc p||call_method
2620
2621Performs a callback to the specified Perl method. The blessed object must
2622be on the stack. See L<perlcall>.
2623
2624=cut
2625*/
2626
a0d0e21e 2627I32
864dbfa3 2628Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2629 /* name of the subroutine */
2630 /* See G_* flags in cop.h */
a0d0e21e 2631{
46ca9bac 2632 STRLEN len;
7918f24d
NC
2633 PERL_ARGS_ASSERT_CALL_METHOD;
2634
46ca9bac 2635 len = strlen(methname);
2636
2637 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2638 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2639}
2640
2641/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2642/*
2643=for apidoc p||call_sv
2644
2645Performs a callback to the Perl sub whose name is in the SV. See
2646L<perlcall>.
2647
2648=cut
2649*/
2650
a0d0e21e 2651I32
001d637e 2652Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2653 /* See G_* flags in cop.h */
a0d0e21e 2654{
27da23d5 2655 dVAR; dSP;
a0d0e21e 2656 LOGOP myop; /* fake syntax tree node */
968b3946 2657 UNOP method_op;
aa689395 2658 I32 oldmark;
8ea43dc8 2659 VOL I32 retval = 0;
a0d0e21e 2660 I32 oldscope;
54310121 2661 bool oldcatch = CATCH_GET;
6224f72b 2662 int ret;
c4420975 2663 OP* const oldop = PL_op;
db36c5a1 2664 dJMPENV;
1e422769 2665
7918f24d
NC
2666 PERL_ARGS_ASSERT_CALL_SV;
2667
a0d0e21e
LW
2668 if (flags & G_DISCARD) {
2669 ENTER;
2670 SAVETMPS;
2671 }
2f8edad0
NC
2672 if (!(flags & G_WANT)) {
2673 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2674 */
2675 flags |= G_SCALAR;
2676 }
a0d0e21e 2677
aa689395 2678 Zero(&myop, 1, LOGOP);
f51d4af5 2679 if (!(flags & G_NOARGS))
aa689395 2680 myop.op_flags |= OPf_STACKED;
4f911530 2681 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2682 SAVEOP();
533c011a 2683 PL_op = (OP*)&myop;
aa689395 2684
3280af22
NIS
2685 EXTEND(PL_stack_sp, 1);
2686 *++PL_stack_sp = sv;
aa689395 2687 oldmark = TOPMARK;
3280af22 2688 oldscope = PL_scopestack_ix;
a0d0e21e 2689
3280af22 2690 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2691 /* Handle first BEGIN of -d. */
3280af22 2692 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2693 /* Try harder, since this may have been a sighandler, thus
2694 * curstash may be meaningless. */
ea726b52 2695 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2696 && !(flags & G_NODEBUG))
5ff48db8 2697 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2698
968b3946
GS
2699 if (flags & G_METHOD) {
2700 Zero(&method_op, 1, UNOP);
5ff48db8 2701 method_op.op_next = (OP*)&myop;
968b3946 2702 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2703 method_op.op_type = OP_METHOD;
968b3946 2704 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2705 myop.op_type = OP_ENTERSUB;
f39d0b86 2706 PL_op = (OP*)&method_op;
968b3946
GS
2707 }
2708
312caa8e 2709 if (!(flags & G_EVAL)) {
0cdb2077 2710 CATCH_SET(TRUE);
d6f07c05 2711 CALL_BODY_SUB((OP*)&myop);
312caa8e 2712 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2713 CATCH_SET(oldcatch);
312caa8e
CS
2714 }
2715 else {
d78bda3d 2716 myop.op_other = (OP*)&myop;
3280af22 2717 PL_markstack_ptr--;
edb2152a 2718 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2719 PL_markstack_ptr++;
a0d0e21e 2720
14dd3ad8 2721 JMPENV_PUSH(ret);
edb2152a 2722
6224f72b
GS
2723 switch (ret) {
2724 case 0:
14dd3ad8 2725 redo_body:
d6f07c05 2726 CALL_BODY_SUB((OP*)&myop);
312caa8e 2727 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2728 if (!(flags & G_KEEPERR)) {
ab69dbc2 2729 CLEAR_ERRSV();
8433848b 2730 }
a0d0e21e 2731 break;
6224f72b 2732 case 1:
f86702cc 2733 STATUS_ALL_FAILURE;
a0d0e21e 2734 /* FALL THROUGH */
6224f72b 2735 case 2:
a0d0e21e 2736 /* my_exit() was called */
03d9f026 2737 SET_CURSTASH(PL_defstash);
a0d0e21e 2738 FREETMPS;
14dd3ad8 2739 JMPENV_POP;
f86702cc 2740 my_exit_jump();
118e2215 2741 assert(0); /* NOTREACHED */
6224f72b 2742 case 3:
3280af22 2743 if (PL_restartop) {
febb3a6d 2744 PL_restartjmpenv = NULL;
533c011a 2745 PL_op = PL_restartop;
3280af22 2746 PL_restartop = 0;
312caa8e 2747 goto redo_body;
a0d0e21e 2748 }
3280af22 2749 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2750 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2751 retval = 0;
2752 else {
2753 retval = 1;
3280af22 2754 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2755 }
312caa8e 2756 break;
a0d0e21e 2757 }
a0d0e21e 2758
edb2152a
NC
2759 if (PL_scopestack_ix > oldscope)
2760 delete_eval_scope();
14dd3ad8 2761 JMPENV_POP;
a0d0e21e 2762 }
1e422769 2763
a0d0e21e 2764 if (flags & G_DISCARD) {
3280af22 2765 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2766 retval = 0;
2767 FREETMPS;
2768 LEAVE;
2769 }
533c011a 2770 PL_op = oldop;
a0d0e21e
LW
2771 return retval;
2772}
2773
6e72f9df 2774/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2775
954c1994
GS
2776/*
2777=for apidoc p||eval_sv
2778
be064c4a
DM
2779Tells Perl to C<eval> the string in the SV. It supports the same flags
2780as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2781
2782=cut
2783*/
2784
a0d0e21e 2785I32
864dbfa3 2786Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2787
8ac85365 2788 /* See G_* flags in cop.h */
a0d0e21e 2789{
97aff369 2790 dVAR;
924508f0 2791 dSP;
a0d0e21e 2792 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2793 VOL I32 oldmark = SP - PL_stack_base;
2794 VOL I32 retval = 0;
6224f72b 2795 int ret;
c4420975 2796 OP* const oldop = PL_op;
db36c5a1 2797 dJMPENV;
84902520 2798
7918f24d
NC
2799 PERL_ARGS_ASSERT_EVAL_SV;
2800
4633a7c4
LW
2801 if (flags & G_DISCARD) {
2802 ENTER;
2803 SAVETMPS;
2804 }
2805
462e5cf6 2806 SAVEOP();
533c011a 2807 PL_op = (OP*)&myop;
5ff48db8 2808 Zero(&myop, 1, UNOP);
3280af22
NIS
2809 EXTEND(PL_stack_sp, 1);
2810 *++PL_stack_sp = sv;
79072805 2811
4633a7c4
LW
2812 if (!(flags & G_NOARGS))
2813 myop.op_flags = OPf_STACKED;
6e72f9df 2814 myop.op_type = OP_ENTEREVAL;
4f911530 2815 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2816 if (flags & G_KEEPERR)
2817 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2818 if (PL_reg_state.re_reparsing)
2819 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2820
dedbcade
DM
2821 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2822 * before a PUSHEVAL, which corrupts the stack after a croak */
2823 TAINT_PROPER("eval_sv()");
2824
14dd3ad8 2825 JMPENV_PUSH(ret);
6224f72b
GS
2826 switch (ret) {
2827 case 0:
14dd3ad8 2828 redo_body:
2ba65d5f
DM
2829 if (PL_op == (OP*)(&myop)) {
2830 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2831 if (!PL_op)
2832 goto fail; /* failed in compilation */
2833 }
4aca2f62 2834 CALLRUNOPS(aTHX);
312caa8e 2835 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2836 if (!(flags & G_KEEPERR)) {
ab69dbc2 2837 CLEAR_ERRSV();
8433848b 2838 }
4633a7c4 2839 break;
6224f72b 2840 case 1:
f86702cc 2841 STATUS_ALL_FAILURE;
4633a7c4 2842 /* FALL THROUGH */
6224f72b 2843 case 2:
4633a7c4 2844 /* my_exit() was called */
03d9f026 2845 SET_CURSTASH(PL_defstash);
4633a7c4 2846 FREETMPS;
14dd3ad8 2847 JMPENV_POP;
f86702cc 2848 my_exit_jump();
118e2215 2849 assert(0); /* NOTREACHED */
6224f72b 2850 case 3:
3280af22 2851 if (PL_restartop) {
febb3a6d 2852 PL_restartjmpenv = NULL;
533c011a 2853 PL_op = PL_restartop;
3280af22 2854 PL_restartop = 0;
312caa8e 2855 goto redo_body;
4633a7c4 2856 }
4aca2f62 2857 fail:
3280af22 2858 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2859 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2860 retval = 0;
2861 else {
2862 retval = 1;
3280af22 2863 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2864 }
312caa8e 2865 break;
4633a7c4
LW
2866 }
2867
14dd3ad8 2868 JMPENV_POP;
4633a7c4 2869 if (flags & G_DISCARD) {
3280af22 2870 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2871 retval = 0;
2872 FREETMPS;
2873 LEAVE;
2874 }
533c011a 2875 PL_op = oldop;
4633a7c4
LW
2876 return retval;
2877}
2878
954c1994
GS
2879/*
2880=for apidoc p||eval_pv
2881
2882Tells Perl to C<eval> the given string and return an SV* result.
2883
2884=cut
2885*/
2886
137443ea 2887SV*
864dbfa3 2888Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2889{
97aff369 2890 dVAR;
137443ea
PP
2891 SV* sv = newSVpv(p, 0);
2892
7918f24d
NC
2893 PERL_ARGS_ASSERT_EVAL_PV;
2894
864dbfa3 2895 eval_sv(sv, G_SCALAR);
137443ea
PP
2896 SvREFCNT_dec(sv);
2897
ed1786ad
DD
2898 {
2899 dSP;
2900 sv = POPs;
2901 PUTBACK;
2902 }
137443ea 2903
eed484f9
DD
2904 /* just check empty string or undef? */
2905 if (croak_on_error) {
2906 SV * const errsv = ERRSV;
2907 if(SvTRUE_NN(errsv))
2908 /* replace with croak_sv? */
2909 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2910 }
137443ea
PP
2911
2912 return sv;
2913}
2914
4633a7c4
LW
2915/* Require a module. */
2916
954c1994 2917/*
ccfc67b7
JH
2918=head1 Embedding Functions
2919
954c1994
GS
2920=for apidoc p||require_pv
2921
7d3fb230
BS
2922Tells Perl to C<require> the file named by the string argument. It is
2923analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2924implemented that way; consider using load_module instead.
954c1994 2925
7d3fb230 2926=cut */
954c1994 2927
4633a7c4 2928void
864dbfa3 2929Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2930{
97aff369 2931 dVAR;
d3acc0f7 2932 dSP;
97aff369 2933 SV* sv;
7918f24d
NC
2934
2935 PERL_ARGS_ASSERT_REQUIRE_PV;
2936
e788e7d3 2937 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2938 PUTBACK;
be41e5d9
NC
2939 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2940 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2941 SPAGAIN;
2942 POPSTACK;
79072805
LW
2943}
2944
76e3520e 2945STATIC void
b6f82619 2946S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2947{
ab821d7f 2948 /* This message really ought to be max 23 lines.
75c72d73 2949 * Removed -h because the user already knows that option. Others? */
fb73857a 2950
1566c39d
NC
2951 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2952 minimum of 509 character string literals. */
27da23d5 2953 static const char * const usage_msg[] = {
1566c39d
NC
2954" -0[octal] specify record separator (\\0, if no argument)\n"
2955" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2956" -C[number/list] enables the listed Unicode features\n"
2957" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2958" -d[:debugger] run program under debugger\n"
2959" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2960" -e program one line of program (several -e's allowed, omit programfile)\n"
2961" -E program like -e, but enables all optional features\n"
2962" -f don't do $sitelib/sitecustomize.pl at startup\n"
2963" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2964" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2965" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2966" -l[octal] enable line ending processing, specifies line terminator\n"
2967" -[mM][-]module execute \"use/no module...\" before executing program\n"
2968" -n assume \"while (<>) { ... }\" loop around program\n"
2969" -p assume loop like -n but print line also, like sed\n"
2970" -s enable rudimentary parsing for switches after programfile\n"
2971" -S look for programfile using PATH environment variable\n",
2972" -t enable tainting warnings\n"
2973" -T enable tainting checks\n"
2974" -u dump core after parsing program\n"
2975" -U allow unsafe operations\n"
2976" -v print version, patchlevel and license\n"
2977" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2978" -w enable many useful warnings\n"
1566c39d
NC
2979" -W enable all warnings\n"
2980" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2981" -X disable all warnings\n"
2982" \n"
2983"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2984NULL
2985};
27da23d5 2986 const char * const *p = usage_msg;
1566c39d 2987 PerlIO *out = PerlIO_stdout();
fb73857a 2988
1566c39d
NC
2989 PerlIO_printf(out,
2990 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2991 PL_origargv[0]);
fb73857a 2992 while (*p)
1566c39d 2993 PerlIO_puts(out, *p++);
b6f82619 2994 my_exit(0);
4633a7c4
LW
2995}
2996
b4ab917c
DM
2997/* convert a string of -D options (or digits) into an int.
2998 * sets *s to point to the char after the options */
2999
3000#ifdef DEBUGGING
3001int
e1ec3a88 3002Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3003{
27da23d5 3004 static const char * const usage_msgd[] = {
651b8f1a
NC
3005 " Debugging flag values: (see also -d)\n"
3006 " p Tokenizing and parsing (with v, displays parse stack)\n"
3007 " s Stack snapshots (with v, displays all stacks)\n"
3008 " l Context (loop) stack processing\n"
3009 " t Trace execution\n"
3010 " o Method and overloading resolution\n",
3011 " c String/numeric conversions\n"
3012 " P Print profiling info, source file input state\n"
3013 " m Memory and SV allocation\n"
3014 " f Format processing\n"
3015 " r Regular expression parsing and execution\n"
3016 " x Syntax tree dump\n",
3017 " u Tainting checks\n"
3018 " H Hash dump -- usurps values()\n"
3019 " X Scratchpad allocation\n"
3020 " D Cleaning up\n"
56967202 3021 " S Op slab allocation\n"
651b8f1a
NC
3022 " T Tokenising\n"
3023 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3024 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3025 " v Verbose: use in conjunction with other flags\n"
3026 " C Copy On Write\n"
3027 " A Consistency checks on internal structures\n"
3028 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3029 " M trace smart match resolution\n"
3030 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3031 NULL
3032 };
b4ab917c 3033 int i = 0;
7918f24d
NC
3034
3035 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3036
b4ab917c
DM
3037 if (isALPHA(**s)) {
3038 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3039 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3040
3041 for (; isALNUM(**s); (*s)++) {
c4420975 3042 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3043 if (d)
3044 i |= 1 << (d - debopts);
3045 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3046 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3047 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3048 }
3049 }
e6e64d9b 3050 else if (isDIGIT(**s)) {
b4ab917c
DM
3051 i = atoi(*s);
3052 for (; isALNUM(**s); (*s)++) ;
3053 }
ddcf8bc1 3054 else if (givehelp) {
06e869a4 3055 const char *const *p = usage_msgd;
651b8f1a 3056 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3057 }
b4ab917c
DM
3058# ifdef EBCDIC
3059 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3060 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3061 "-Dp not implemented on this platform\n");
3062# endif
3063 return i;
3064}
3065#endif
3066
79072805
LW
3067/* This routine handles any switches that can be given during run */
3068
c7030b81
NC
3069const char *
3070Perl_moreswitches(pTHX_ const char *s)
79072805 3071{
27da23d5 3072 dVAR;
84c133a0 3073 UV rschar;
0544e6df 3074 const char option = *s; /* used to remember option in -m/-M code */
79072805 3075
7918f24d
NC
3076 PERL_ARGS_ASSERT_MORESWITCHES;
3077
79072805
LW
3078 switch (*s) {
3079 case '0':
a863c7d1 3080 {
f2095865 3081 I32 flags = 0;
a3b680e6 3082 STRLEN numlen;
f2095865
JH
3083
3084 SvREFCNT_dec(PL_rs);
3085 if (s[1] == 'x' && s[2]) {
a3b680e6 3086 const char *e = s+=2;
f2095865
JH
3087 U8 *tmps;
3088
a3b680e6
AL
3089 while (*e)
3090 e++;
f2095865
JH
3091 numlen = e - s;
3092 flags = PERL_SCAN_SILENT_ILLDIGIT;
3093 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3094 if (s + numlen < e) {
3095 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3096 numlen = 0;
3097 s--;
3098 }
396482e1 3099 PL_rs = newSVpvs("");
c5661c80 3100 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3101 tmps = (U8*)SvPVX(PL_rs);
3102 uvchr_to_utf8(tmps, rschar);
3103 SvCUR_set(PL_rs, UNISKIP(rschar));
3104 SvUTF8_on(PL_rs);
3105 }
3106 else {
3107 numlen = 4;
3108 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3109 if (rschar & ~((U8)~0))
3110 PL_rs = &PL_sv_undef;
3111 else if (!rschar && numlen >= 2)
396482e1 3112 PL_rs = newSVpvs("");
f2095865
JH
3113 else {
3114 char ch = (char)rschar;
3115 PL_rs = newSVpvn(&ch, 1);
3116 }
3117 }
64ace3f8 3118 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3119 return s + numlen;
a863c7d1 3120 }
46487f74 3121 case 'C':
a05d7ebb 3122 s++;
dd374669 3123 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3124 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3125 PL_utf8cache = -1;
46487f74 3126 return s;
2304df62 3127 case 'F':
3280af22 3128 PL_minus_F = TRUE;
ebce5377
RGS
3129 PL_splitstr = ++s;
3130 while (*s && !isSPACE(*s)) ++s;
e49e380e 3131 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3132 return s;
79072805 3133 case 'a':
3280af22 3134 PL_minus_a = TRUE;
79072805
LW
3135 s++;
3136 return s;
3137 case 'c':
3280af22 3138 PL_minus_c = TRUE;
79072805
LW
3139 s++;
3140 return s;
3141 case 'd':
f20b2998 3142 forbid_setid('d', FALSE);
4633a7c4 3143 s++;
2cbb2ee1
RGS
3144
3145 /* -dt indicates to the debugger that threads will be used */
3146 if (*s == 't' && !isALNUM(s[1])) {
3147 ++s;
3148 my_setenv("PERL5DB_THREADED", "1");
3149 }
3150
70c94a19
RR
3151 /* The following permits -d:Mod to accepts arguments following an =
3152 in the fashion that -MSome::Mod does. */
3153 if (*s == ':' || *s == '=') {
b19934fb
NC
3154 const char *start;
3155 const char *end;
3156 SV *sv;
3157
3158 if (*++s == '-') {
3159 ++s;
3160 sv = newSVpvs("no Devel::");
3161 } else {
3162 sv = newSVpvs("use Devel::");
3163 }
3164
3165 start = s;
3166 end = s + strlen(s);
f85893a1 3167
b19934fb 3168 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3169 while(isALNUM(*s) || *s==':') ++s;
3170 if (*s != '=')
f85893a1 3171 sv_catpvn(sv, start, end - start);
70c94a19
RR
3172 else {
3173 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3174 /* Don't use NUL as q// delimiter here, this string goes in the
3175 * environment. */
3176 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3177 }
f85893a1 3178 s = end;
184f32ec 3179 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3180 SvREFCNT_dec(sv);
4633a7c4 3181 }
ed094faf 3182 if (!PL_perldb) {
3280af22 3183 PL_perldb = PERLDB_ALL;
a0d0e21e 3184 init_debugger();
ed094faf 3185 }
79072805
LW
3186 return s;
3187 case 'D':
0453d815 3188 {
79072805 3189#ifdef DEBUGGING
f20b2998 3190 forbid_setid('D', FALSE);
b4ab917c 3191 s++;
dd374669 3192 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3193#else /* !DEBUGGING */
0453d815 3194 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3195 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3196 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3197 for (s++; isALNUM(*s); s++) ;
79072805 3198#endif
79072805 3199 return s;
0453d815 3200 }
4633a7c4 3201 case 'h':
b6f82619 3202 usage();
79072805 3203 case 'i':
43c5f42d 3204 Safefree(PL_inplace);
c030f24b
GH
3205#if defined(__CYGWIN__) /* do backup extension automagically */
3206 if (*(s+1) == '\0') {
c86a4f2e 3207 PL_inplace = savepvs(".bak");
c030f24b
GH
3208 return s+1;
3209 }
3210#endif /* __CYGWIN__ */
5ef5d758 3211 {
d4c19fe8 3212 const char * const start = ++s;
5ef5d758
NC
3213 while (*s && !isSPACE(*s))
3214 ++s;
3215
3216 PL_inplace = savepvn(start, s - start);
3217 }
7b8d334a 3218 if (*s) {
5ef5d758 3219 ++s;
7b8d334a 3220 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3221 s++;
7b8d334a 3222 }
fb73857a 3223 return s;
4e49a025 3224 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3225 forbid_setid('I', FALSE);
fb73857a
PP
3226 ++s;
3227 while (*s && isSPACE(*s))
3228 ++s;
3229 if (*s) {
c7030b81 3230 const char *e, *p;
0df16ed7
GS
3231 p = s;
3232 /* ignore trailing spaces (possibly followed by other switches) */
3233 do {
3234 for (e = p; *e && !isSPACE(*e); e++) ;
3235 p = e;
3236 while (isSPACE(*p))
3237 p++;
3238 } while (*p && *p != '-');
55b4bc1c 3239 incpush(s, e-s,
e28f3139 3240 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3241 s = p;
3242 if (*s == '-')
3243 s++;
79072805
LW
3244 }
3245 else
a67e862a 3246 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3247 return s;
79072805 3248 case 'l':
3280af22 3249 PL_minus_l = TRUE;
79072805 3250 s++;
7889fe52
NIS
3251 if (PL_ors_sv) {
3252 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3253 PL_ors_sv = NULL;
7889fe52 3254 }
79072805 3255 if (isDIGIT(*s)) {
53305cf1 3256 I32 flags = 0;
a3b680e6 3257 STRLEN numlen;
396482e1 3258 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3259 numlen = 3 + (*s == '0');
3260 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3261 s += numlen;
3262 }
3263 else {
8bfdd7d9 3264 if (RsPARA(PL_rs)) {
396482e1 3265 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3266 }
3267 else {
8bfdd7d9 3268 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3269 }
79072805
LW
3270 }
3271 return s;
1a30305b 3272 case 'M':
f20b2998 3273 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3274 /* FALL THROUGH */
3275 case 'm':
f20b2998 3276 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3277 if (*++s) {
c7030b81 3278 const char *start;
b64cb68c 3279 const char *end;
11343788 3280 SV *sv;
e1ec3a88 3281 const char *use = "use ";
0544e6df 3282 bool colon = FALSE;
a5f75d66 3283 /* -M-foo == 'no foo' */
d0043bd1
NC
3284 /* Leading space on " no " is deliberate, to make both
3285 possibilities the same length. */
3286 if (*s == '-') { use = " no "; ++s; }
3287 sv = newSVpvn(use,4);
a5f75d66 3288 start = s;
1a30305b 3289 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3290 while(isALNUM(*s) || *s==':') {
3291 if( *s++ == ':' ) {
3292 if( *s == ':' )
3293 s++;
3294 else
3295 colon = TRUE;
3296 }
3297 }
3298 if (s == start)
3299 Perl_croak(aTHX_ "Module name required with -%c option",
3300 option);
3301 if (colon)
3302 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3303 "contains single ':'",
63da6837 3304 (int)(s - start), start, option);
b64cb68c 3305 end = s + strlen(s);
c07a80fd 3306 if (*s != '=') {
b64cb68c 3307 sv_catpvn(sv, start, end - start);
0544e6df 3308 if (option == 'm') {
c07a80fd 3309 if (*s != '\0')
cea2e8a9 3310 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3311 sv_catpvs( sv, " ()");
c07a80fd
PP
3312 }
3313 } else {
11343788 3314 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3315 /* Use NUL as q''-delimiter. */
3316 sv_catpvs(sv, " split(/,/,q\0");
3317 ++s;
3318 sv_catpvn(sv, s, end - s);
396482e1 3319 sv_catpvs(sv, "\0)");
c07a80fd 3320 }
b64cb68c 3321 s = end;
29a861e7 3322 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3323 }
3324 else
0544e6df 3325 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3326 return s;
79072805 3327 case 'n':
3280af22 3328 PL_minus_n = TRUE;
79072805
LW
3329 s++;
3330 return s;
3331 case 'p':
3280af22 3332 PL_minus_p = TRUE;
79072805
LW
3333 s++;
3334 return s;
3335 case 's':
f20b2998 3336 forbid_setid('s', FALSE);
3280af22 3337 PL_doswitches = TRUE;
79072805
LW
3338 s++;
3339 return s;
6537fe72 3340 case 't':
27a6968b 3341 case 'T':
284167a5
SM
3342#if SILENT_NO_TAINT_SUPPORT
3343 /* silently ignore */
3344#elif NO_TAINT_SUPPORT
3345 Perl_croak("This perl was compiled without taint support. "
3346 "Cowardly refusing to run with -t or -T flags");
3347#else
3348 if (!TAINTING_get)
27a6968b 3349 TOO_LATE_FOR(*s);
284167a5 3350#endif
6537fe72 3351 s++;
463ee0b2 3352 return s;
79072805 3353 case 'u':
3280af22 3354 PL_do_undump = TRUE;
79072805
LW
3355 s++;
3356 return s;
3357 case 'U':
3280af22 3358 PL_unsafe = TRUE;
79072805
LW
3359 s++;
3360 return s;
3361 case 'v':
c4bc78d9
NC
3362 minus_v();
3363 case 'w':
3364 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3365 PL_dowarn |= G_WARN_ON;
3366 }
3367 s++;
3368 return s;
3369 case 'W':
3370 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3371 if (!specialWARN(PL_compiling.cop_warnings))
3372 PerlMemShared_free(PL_compiling.cop_warnings);
3373 PL_compiling.cop_warnings = pWARN_ALL ;
3374 s++;
3375 return s;
3376 case 'X':
3377 PL_dowarn = G_WARN_ALL_OFF;
3378 if (!specialWARN(PL_compiling.cop_warnings))
3379 PerlMemShared_free(PL_compiling.cop_warnings);
3380 PL_compiling.cop_warnings = pWARN_NONE ;
3381 s++;
3382 return s;
3383 case '*':
3384 case ' ':
3385 while( *s == ' ' )
3386 ++s;
3387 if (s[0] == '-') /* Additional switches on #! line. */
3388 return s+1;
3389 break;
3390 case '-':
3391 case 0:
3392#if defined(WIN32) || !defined(PERL_STRICT_CR)
3393 case '\r':
3394#endif
3395 case '\n':
3396 case '\t':
3397 break;
3398#ifdef ALTERNATE_SHEBANG
3399 case 'S': /* OS/2 needs -S on "extproc" line. */
3400 break;
3401#endif
4bb78d63
CB
3402 case 'e': case 'f': case 'x': case 'E':
3403#ifndef ALTERNATE_SHEBANG
3404 case 'S':
3405#endif
3406 case 'V':
c4bc78d9 3407 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3408 default:
3409 Perl_croak(aTHX_
3410 "Unrecognized switch: -%.1s (-h will show valid options)",s
3411 );
c4bc78d9
NC
3412 }
3413 return NULL;
3414}
3415
3416
3417STATIC void
3418S_minus_v(pTHX)
3419{
fc3381af 3420 PerlIO * PIO_stdout;
d7aa5382 3421 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3422 upg_version(PL_patchlevel, TRUE);
8e9464f1 3423#if !defined(DGUX)
46807d8e
YO
3424 {
3425 SV* level= vstringify(PL_patchlevel);
3426#ifdef PERL_PATCHNUM
23d483e2
NC
3427# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3428 SV *num = newSVpvs(PERL_PATCHNUM "*");
3429# else
3430 SV *num = newSVpvs(PERL_PATCHNUM);
3431# endif
fc3381af
DD
3432 {
3433 STRLEN level_len, num_len;
3434 char * level_str, * num_str;
3435 num_str = SvPV(num, num_len);
3436 level_str = SvPV(level, level_len);
3437 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3438 SvREFCNT_dec(level);
3439 level= num;
3440 } else {
3441 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3442 SvREFCNT_dec(num);
3443 }
46807d8e
YO
3444 }
3445 #endif
fc3381af
DD
3446 PIO_stdout = PerlIO_stdout();
3447 PerlIO_printf(PIO_stdout,
ded326e4
DG
3448 "\nThis is perl " STRINGIFY(PERL_REVISION)
3449 ", version " STRINGIFY(PERL_VERSION)
3450 ", subversion " STRINGIFY(PERL_SUBVERSION)
3451 " (%"SVf") built for " ARCHNAME, level
3452 );
46807d8e
YO
3453 SvREFCNT_dec(level);
3454 }
8e9464f1 3455#else /* DGUX */
fc3381af 3456 PIO_stdout = PerlIO_stdout();
8e9464f1 3457/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
fc3381af 3458 PerlIO_printf(PIO_stdout,
52ea0aec 3459 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3460 SVfARG(vstringify(PL_patchlevel))));
fc3381af 3461 PerlIO_printf(PIO_stdout,
8e9464f1
JH
3462 Perl_form(aTHX_ " built under %s at %s %s\n",
3463 OSNAME, __DATE__, __TIME__));
fc3381af 3464 PerlIO_printf(PIO_stdout,
8e9464f1 3465 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3466 OSVERS));
8e9464f1 3467#endif /* !DGUX */
fb73857a
PP
3468#if defined(LOCAL_PATCH_COUNT)
3469 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3470 PerlIO_printf(PIO_stdout,
b0e47665
GS
3471 "\n(with %d registered patch%s, "
3472 "see perl -V for more detail)",
bb7a0f54 3473 LOCAL_PATCH_COUNT,
b0e47665 3474 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3475#endif
1a30305b 3476
fc3381af 3477 PerlIO_printf(PIO_stdout,
fdfb76e4 3478 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3479#ifdef MSDOS
fc3381af 3480 PerlIO_printf(PIO_stdout,
b0e47665 3481 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3482#endif
3483#ifdef DJGPP
fc3381af 3484 PerlIO_printf(PIO_stdout,
b0e47665
GS
3485 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3486 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3487#endif
79072805 3488#ifdef OS2
fc3381af 3489 PerlIO_printf(PIO_stdout,
b0e47665 3490 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3491 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3492#endif
a3f9223b 3493#ifdef __BEOS__
fc3381af 3494 PerlIO_printf(PIO_stdout,
b0e47665 3495 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3496#endif
9d116dd7 3497#ifdef OEMVS
fc3381af 3498 PerlIO_printf(PIO_stdout,
b0e47665 3499 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3500#endif
495c5fdc 3501#ifdef __VOS__
fc3381af 3502 PerlIO_printf(PIO_stdout,
94efb9fb 3503 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3504#endif
a1a0e61e 3505#ifdef POSIX_BC
fc3381af 3506 PerlIO_printf(PIO_stdout,
b0e47665 3507 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3508#endif
e1caacb4 3509#ifdef UNDER_CE
fc3381af
DD
3510 PerlIO_printf(PIO_stdout,
3511 "WINCE port by Rainer Keuchel, 2001-2002\n"
3512 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3513 wce_hitreturn();
3514#endif
a0fd4948 3515#ifdef __SYMBIAN32__
fc3381af 3516 PerlIO_printf(PIO_stdout,
27da23d5
JH
3517 "Symbian port by Nokia, 2004-2005\n");
3518#endif
baed7233
DL
3519#ifdef BINARY_BUILD_NOTICE
3520 BINARY_BUILD_NOTICE;
3521#endif
fc3381af 3522 PerlIO_printf(PIO_stdout,
b0e47665 3523 "\n\
79072805