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4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459
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4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
a687059c 6 *
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LW
7 * You may distribute under the terms of either the GNU General Public
8 * License or the Artistic License, as specified in the README file.
a687059c 9 *
8d063cd8
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10 */
11
a0d0e21e 12/*
4ac71550
TC
13 * A ship then new they built for him
14 * of mithril and of elven-glass
15 * --from Bilbo's song of Eärendil
16 *
17 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 18 */
45d8adaa 19
166f8a29
DM
20/* This file contains the top-level functions that are used to create, use
21 * and destroy a perl interpreter, plus the functions used by XS code to
22 * call back into perl. Note that it does not contain the actual main()
ddfa107c 23 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
24 */
25
378cc40b 26#include "EXTERN.h"
864dbfa3 27#define PERL_IN_PERL_C
378cc40b 28#include "perl.h"
e3321bb0 29#include "patchlevel.h" /* for local_patches */
4a5df386 30#include "XSUB.h"
378cc40b 31
011f1a1a
JH
32#ifdef NETWARE
33#include "nwutil.h"
011f1a1a
JH
34#endif
35
df5cef82 36/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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37#ifdef I_UNISTD
38#include <unistd.h>
39#endif
a0d0e21e 40
2aa47728
NC
41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
42# ifdef I_SYS_WAIT
43# include <sys/wait.h>
44# endif
bf357333
NC
45# ifdef I_SYSUIO
46# include <sys/uio.h>
47# endif
48
49union control_un {
50 struct cmsghdr cm;
51 char control[CMSG_SPACE(sizeof(int))];
52};
53
2aa47728
NC
54#endif
55
5311654c
JH
56#ifdef __BEOS__
57# define HZ 1000000
58#endif
59
60#ifndef HZ
61# ifdef CLK_TCK
62# define HZ CLK_TCK
63# else
64# define HZ 60
65# endif
66#endif
67
7114a2d2 68#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 69char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
70#endif
71
acfe0abc 72static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 73
cc69b689 74#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 75/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
76# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
77#else
ec2019ad 78/* Drop almost everything */
cc69b689 79# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 80#endif
8d063cd8 81
d6f07c05
AL
82#define CALL_BODY_EVAL(myop) \
83 if (PL_op == (myop)) \
139d0ce6 84 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
d6f07c05
AL
85 if (PL_op) \
86 CALLRUNOPS(aTHX);
87
88#define CALL_BODY_SUB(myop) \
89 if (PL_op == (myop)) \
139d0ce6 90 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
91 if (PL_op) \
92 CALLRUNOPS(aTHX);
93
94#define CALL_LIST_BODY(cv) \
95 PUSHMARK(PL_stack_sp); \
ad64d0ec 96 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 97
e6827a76 98static void
daa7d858 99S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 100{
27da23d5 101 dVAR;
e6827a76
NC
102 if (!PL_curinterp) {
103 PERL_SET_INTERP(my_perl);
3db8f154 104#if defined(USE_ITHREADS)
e6827a76
NC
105 INIT_THREADS;
106 ALLOC_THREAD_KEY;
107 PERL_SET_THX(my_perl);
108 OP_REFCNT_INIT;
71ad1b0c 109 HINTS_REFCNT_INIT;
e6827a76 110 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 111# endif
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112#ifdef PERL_IMPLICIT_CONTEXT
113 MUTEX_INIT(&PL_my_ctx_mutex);
114# endif
e6827a76 115 }
c0bce9aa
NC
116#if defined(USE_ITHREADS)
117 else
118#else
119 /* This always happens for non-ithreads */
120#endif
121 {
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122 PERL_SET_THX(my_perl);
123 }
124}
06d86050 125
cbec8ebe
DM
126
127/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
128
129void
130Perl_sys_init(int* argc, char*** argv)
131{
4fc0badb 132 dVAR;
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133
134 PERL_ARGS_ASSERT_SYS_INIT;
135
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136 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
137 PERL_UNUSED_ARG(argv);
138 PERL_SYS_INIT_BODY(argc, argv);
139}
140
141void
142Perl_sys_init3(int* argc, char*** argv, char*** env)
143{
4fc0badb 144 dVAR;
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145
146 PERL_ARGS_ASSERT_SYS_INIT3;
147
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148 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
149 PERL_UNUSED_ARG(argv);
150 PERL_UNUSED_ARG(env);
151 PERL_SYS_INIT3_BODY(argc, argv, env);
152}
153
154void
d0820ef1 155Perl_sys_term()
cbec8ebe 156{
4fc0badb 157 dVAR;
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DM
158 if (!PL_veto_cleanup) {
159 PERL_SYS_TERM_BODY();
160 }
cbec8ebe
DM
161}
162
163
32e30700
GS
164#ifdef PERL_IMPLICIT_SYS
165PerlInterpreter *
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166perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
167 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
168 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
169 struct IPerlDir* ipD, struct IPerlSock* ipS,
170 struct IPerlProc* ipP)
171{
172 PerlInterpreter *my_perl;
7918f24d
NC
173
174 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
175
9f653bb5 176 /* Newx() needs interpreter, so call malloc() instead */
32e30700 177 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 178 S_init_tls_and_interp(my_perl);
32e30700
GS
179 Zero(my_perl, 1, PerlInterpreter);
180 PL_Mem = ipM;
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181 PL_MemShared = ipMS;
182 PL_MemParse = ipMP;
32e30700
GS
183 PL_Env = ipE;
184 PL_StdIO = ipStd;
185 PL_LIO = ipLIO;
186 PL_Dir = ipD;
187 PL_Sock = ipS;
188 PL_Proc = ipP;
7cb608b5 189 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 190
32e30700
GS
191 return my_perl;
192}
193#else
954c1994
GS
194
195/*
ccfc67b7
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196=head1 Embedding Functions
197
954c1994
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198=for apidoc perl_alloc
199
200Allocates a new Perl interpreter. See L<perlembed>.
201
202=cut
203*/
204
93a17b20 205PerlInterpreter *
cea2e8a9 206perl_alloc(void)
79072805 207{
cea2e8a9 208 PerlInterpreter *my_perl;
79072805 209
9f653bb5 210 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 211 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 212
e6827a76 213 S_init_tls_and_interp(my_perl);
7cb608b5 214#ifndef PERL_TRACK_MEMPOOL
07409e01 215 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
216#else
217 Zero(my_perl, 1, PerlInterpreter);
218 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
219 return my_perl;
220#endif
79072805 221}
32e30700 222#endif /* PERL_IMPLICIT_SYS */
79072805 223
954c1994
GS
224/*
225=for apidoc perl_construct
226
227Initializes a new Perl interpreter. See L<perlembed>.
228
229=cut
230*/
231
79072805 232void
0cb96387 233perl_construct(pTHXx)
79072805 234{
27da23d5 235 dVAR;
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236
237 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
238
8990e307 239#ifdef MULTIPLICITY
54aff467 240 init_interp();
ac27b0f5 241 PL_perl_destruct_level = 1;
54aff467 242#else
7918f24d 243 PERL_UNUSED_ARG(my_perl);
54aff467
GS
244 if (PL_perl_destruct_level > 0)
245 init_interp();
246#endif
34caed6d
DM
247 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
248
34caed6d
DM
249 /* set read-only and try to insure than we wont see REFCNT==0
250 very often */
251
252 SvREADONLY_on(&PL_sv_undef);
253 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
254
255 sv_setpv(&PL_sv_no,PL_No);
256 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
257 of caching the numeric forms. However, as &PL_sv_no doesn't contain
258 a string that is a valid numer, we have to turn the public flags by
259 hand: */
34caed6d 260 SvNV(&PL_sv_no);
c1939273 261 SvIV(&PL_sv_no);
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NC
262 SvIOK_on(&PL_sv_no);
263 SvNOK_on(&PL_sv_no);
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DM
264 SvREADONLY_on(&PL_sv_no);
265 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
266
267 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 268 SvNV(&PL_sv_yes);
c1939273 269 SvIV(&PL_sv_yes);
34caed6d
DM
270 SvREADONLY_on(&PL_sv_yes);
271 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
272
273 SvREADONLY_on(&PL_sv_placeholder);
274 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
275
276 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 277#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 278 PL_pidstatus = newHV();
ca0c25f6 279#endif
79072805 280
396482e1 281 PL_rs = newSVpvs("\n");
dc92893f 282
cea2e8a9 283 init_stacks();
79072805 284
748a9306 285 init_ids();
a5f75d66 286
312caa8e 287 JMPENV_BOOTSTRAP;
f86702cc
PP
288 STATUS_ALL_SUCCESS;
289
0672f40e 290 init_i18nl10n(1);
36477c24 291 SET_NUMERIC_STANDARD();
0b5b802d 292
ab821d7f 293#if defined(LOCAL_PATCH_COUNT)
3280af22 294 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
295#endif
296
52853b95
GS
297#ifdef HAVE_INTERP_INTERN
298 sys_intern_init();
299#endif
300
3a1ee7e8 301 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 302
3280af22
NIS
303 PL_fdpid = newAV(); /* for remembering popen pids by fd */
304 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 305 PL_errors = newSVpvs("");
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MHM
306 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
307 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
308 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 309#ifdef USE_ITHREADS
402d2eb1
NC
310 /* First entry is a list of empty elements. It needs to be initialised
311 else all hell breaks loose in S_find_uninit_var(). */
312 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 313 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 314#endif
e5dd39fc 315#ifdef USE_REENTRANT_API
59bd0823 316 Perl_reentrant_init(aTHX);
e5dd39fc 317#endif
3d47000e
AB
318
319 /* Note that strtab is a rather special HV. Assumptions are made
320 about not iterating on it, and not adding tie magic to it.
321 It is properly deallocated in perl_destruct() */
322 PL_strtab = newHV();
323
3d47000e
AB
324 HvSHAREKEYS_off(PL_strtab); /* mandatory */
325 hv_ksplit(PL_strtab, 512);
326
0631ea03
AB
327#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
328 _dyld_lookup_and_bind
329 ("__environ", (unsigned long *) &environ_pointer, NULL);
330#endif /* environ */
331
2f42fcb0
JH
332#ifndef PERL_MICRO
333# ifdef USE_ENVIRON_ARRAY
0631ea03 334 PL_origenviron = environ;
2f42fcb0 335# endif
0631ea03
AB
336#endif
337
5311654c 338 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 339 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
340 * BeOS has those, but returns the wrong value.
341 * The HZ if not originally defined has been by now
342 * been defined as CLK_TCK, if available. */
dbc1d986 343#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
344 PL_clocktick = sysconf(_SC_CLK_TCK);
345 if (PL_clocktick <= 0)
346#endif
347 PL_clocktick = HZ;
348
081fc587
AB
349 PL_stashcache = newHV();
350
e8e3635e 351 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 352
27da23d5
JH
353#ifdef HAS_MMAP
354 if (!PL_mmap_page_size) {
355#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
356 {
357 SETERRNO(0, SS_NORMAL);
358# ifdef _SC_PAGESIZE
359 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
360# else
361 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
362# endif
363 if ((long) PL_mmap_page_size < 0) {
364 if (errno) {
44f8325f 365 SV * const error = ERRSV;
d4c19fe8 366 SvUPGRADE(error, SVt_PV);
0510663f 367 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
368 }
369 else
370 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
371 }
372 }
373#else
374# ifdef HAS_GETPAGESIZE
375 PL_mmap_page_size = getpagesize();
376# else
377# if defined(I_SYS_PARAM) && defined(PAGESIZE)
378 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
379# endif
380# endif
381#endif
382 if (PL_mmap_page_size <= 0)
383 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
384 (IV) PL_mmap_page_size);
385 }
386#endif /* HAS_MMAP */
387
388#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
389 PL_timesbase.tms_utime = 0;
390 PL_timesbase.tms_stime = 0;
391 PL_timesbase.tms_cutime = 0;
392 PL_timesbase.tms_cstime = 0;
393#endif
394
7d113631
NC
395 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
396
a3e6e81e 397 PL_registered_mros = newHV();
9e169432
NC
398 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
399 HvMAX(PL_registered_mros) = 0;
a3e6e81e 400
8990e307 401 ENTER;
79072805
LW
402}
403
954c1994 404/*
62375a60
NIS
405=for apidoc nothreadhook
406
407Stub that provides thread hook for perl_destruct when there are
408no threads.
409
410=cut
411*/
412
413int
4e9e3734 414Perl_nothreadhook(pTHX)
62375a60 415{
96a5add6 416 PERL_UNUSED_CONTEXT;
62375a60
NIS
417 return 0;
418}
419
41e4abd8
NC
420#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
421void
422Perl_dump_sv_child(pTHX_ SV *sv)
423{
424 ssize_t got;
bf357333
NC
425 const int sock = PL_dumper_fd;
426 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
427 union control_un control;
428 struct msghdr msg;
808ad2d0 429 struct iovec vec[2];
bf357333 430 struct cmsghdr *cmptr;
808ad2d0
NC
431 int returned_errno;
432 unsigned char buffer[256];
41e4abd8 433
7918f24d
NC
434 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
435
bf357333 436 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
437 return;
438
439 PerlIO_flush(Perl_debug_log);
440
bf357333
NC
441 /* All these shenanigans are to pass a file descriptor over to our child for
442 it to dump out to. We can't let it hold open the file descriptor when it
443 forks, as the file descriptor it will dump to can turn out to be one end
444 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 445 be open, the wait would be forever.) */
bf357333
NC
446
447 msg.msg_control = control.control;
448 msg.msg_controllen = sizeof(control.control);
449 /* We're a connected socket so we don't need a destination */
450 msg.msg_name = NULL;
451 msg.msg_namelen = 0;
452 msg.msg_iov = vec;
808ad2d0 453 msg.msg_iovlen = 1;
bf357333
NC
454
455 cmptr = CMSG_FIRSTHDR(&msg);
456 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
457 cmptr->cmsg_level = SOL_SOCKET;
458 cmptr->cmsg_type = SCM_RIGHTS;
459 *((int *)CMSG_DATA(cmptr)) = 1;
460
461 vec[0].iov_base = (void*)&sv;
462 vec[0].iov_len = sizeof(sv);
463 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
464
465 if(got < 0) {
bf357333 466 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
467 abort();
468 }
bf357333
NC
469 if(got < sizeof(sv)) {
470 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
471 abort();
472 }
473
808ad2d0
NC
474 /* Return protocol is
475 int: errno value
476 unsigned char: length of location string (0 for empty)
477 unsigned char*: string (not terminated)
478 */
479 vec[0].iov_base = (void*)&returned_errno;
480 vec[0].iov_len = sizeof(returned_errno);
481 vec[1].iov_base = buffer;
482 vec[1].iov_len = 1;
483
484 got = readv(sock, vec, 2);
41e4abd8
NC
485
486 if(got < 0) {
487 perror("Debug leaking scalars parent read failed");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
808ad2d0 491 if(got < sizeof(returned_errno) + 1) {
41e4abd8 492 perror("Debug leaking scalars parent short read");
808ad2d0 493 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
494 abort();
495 }
496
808ad2d0
NC
497 if (*buffer) {
498 got = read(sock, buffer + 1, *buffer);
499 if(got < 0) {
500 perror("Debug leaking scalars parent read 2 failed");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504
505 if(got < *buffer) {
506 perror("Debug leaking scalars parent short read 2");
507 PerlIO_flush(PerlIO_stderr());
508 abort();
509 }
510 }
511
512 if (returned_errno || *buffer) {
513 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
514 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
515 returned_errno, strerror(returned_errno));
41e4abd8
NC
516 }
517}
518#endif
519
62375a60 520/*
954c1994
GS
521=for apidoc perl_destruct
522
523Shuts down a Perl interpreter. See L<perlembed>.
524
525=cut
526*/
527
31d77e54 528int
0cb96387 529perl_destruct(pTHXx)
79072805 530{
27da23d5 531 dVAR;
be2ea8ed 532 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 533 HV *hv;
2aa47728 534#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
535 pid_t child;
536#endif
8990e307 537
7918f24d
NC
538 PERL_ARGS_ASSERT_PERL_DESTRUCT;
539#ifndef MULTIPLICITY
ed6c66dd 540 PERL_UNUSED_ARG(my_perl);
7918f24d 541#endif
9d4ba2ae 542
3d22c4f0
GG
543 assert(PL_scopestack_ix == 1);
544
7766f137
GS
545 /* wait for all pseudo-forked children to finish */
546 PERL_WAIT_FOR_CHILDREN;
547
3280af22 548 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
549#ifdef DEBUGGING
550 {
9d4ba2ae
AL
551 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
552 if (s) {
e1ec3a88 553 const int i = atoi(s);
5f05dabc
PP
554 if (destruct_level < i)
555 destruct_level = i;
556 }
4633a7c4
LW
557 }
558#endif
559
27da23d5 560 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
561 dJMPENV;
562 int x = 0;
563
564 JMPENV_PUSH(x);
1b6737cc 565 PERL_UNUSED_VAR(x);
f3faeb53
AB
566 if (PL_endav && !PL_minus_c)
567 call_list(PL_scopestack_ix, PL_endav);
568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
62375a60
NIS
577 if (CALL_FPTR(PL_threadhook)(aTHX)) {
578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
3280af22 754 SvREFCNT_dec(PL_main_cv);
601f1833 755 PL_main_cv = NULL;
24d3c518 756 PL_dirty = TRUE;
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;
a0de6cf5 773 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 774 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
775 }
776
5cd24f17 777 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 778 SvREFCNT_dec(PL_warnhook);
a0714e2c 779 PL_warnhook = NULL;
3280af22 780 SvREFCNT_dec(PL_diehook);
a0714e2c 781 PL_diehook = NULL;
5cd24f17 782
4b556e6c 783 /* call exit list functions */
3280af22 784 while (PL_exitlistlen-- > 0)
acfe0abc 785 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 786
3280af22 787 Safefree(PL_exitlist);
4b556e6c 788
1c4916e5
CB
789 PL_exitlist = NULL;
790 PL_exitlistlen = 0;
791
a3e6e81e
NC
792 SvREFCNT_dec(PL_registered_mros);
793
551a8b83 794 /* jettison our possibly duplicated environment */
4b647fb0
DM
795 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
796 * so we certainly shouldn't free it here
797 */
2f42fcb0 798#ifndef PERL_MICRO
4b647fb0 799#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 800 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
801#ifdef USE_ITHREADS
802 /* only main thread can free environ[0] contents */
803 && PL_curinterp == aTHX
804#endif
805 )
806 {
551a8b83
JH
807 I32 i;
808
809 for (i = 0; environ[i]; i++)
4b420006 810 safesysfree(environ[i]);
0631ea03 811
4b420006
JH
812 /* Must use safesysfree() when working with environ. */
813 safesysfree(environ);
551a8b83
JH
814
815 environ = PL_origenviron;
816 }
817#endif
2f42fcb0 818#endif /* !PERL_MICRO */
551a8b83 819
30985c42
JH
820 if (destruct_level == 0) {
821
822 DEBUG_P(debprofdump());
823
824#if defined(PERLIO_LAYERS)
825 /* No more IO - including error messages ! */
826 PerlIO_cleanup(aTHX);
827#endif
828
829 CopFILE_free(&PL_compiling);
830 CopSTASH_free(&PL_compiling);
831
832 /* The exit() function will do everything that needs doing. */
833 return STATUS_EXIT;
834 }
835
804ffa60 836 /* reset so print() ends up where we expect */
a0714e2c 837 setdefout(NULL);
804ffa60 838
5f8cb046
DM
839#ifdef USE_ITHREADS
840 /* the syntax tree is shared between clones
841 * so op_free(PL_main_root) only ReREFCNT_dec's
842 * REGEXPs in the parent interpreter
843 * we need to manually ReREFCNT_dec for the clones
844 */
5f8cb046 845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM
847 PL_regex_pad = NULL;
848#endif
849
ad64d0ec 850 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
851 PL_stashcache = NULL;
852
5f05dabc
PP
853 /* loosen bonds of global variables */
854
2f9285f8
DM
855 /* XXX can PL_parser still be non-null here? */
856 if(PL_parser && PL_parser->rsfp) {
857 (void)PerlIO_close(PL_parser->rsfp);
858 PL_parser->rsfp = NULL;
8ebc5c01
PP
859 }
860
84386e14
RGS
861 if (PL_minus_F) {
862 Safefree(PL_splitstr);
863 PL_splitstr = NULL;
864 }
865
8ebc5c01 866 /* switches */
3280af22
NIS
867 PL_minus_n = FALSE;
868 PL_minus_p = FALSE;
869 PL_minus_l = FALSE;
870 PL_minus_a = FALSE;
871 PL_minus_F = FALSE;
872 PL_doswitches = FALSE;
599cee73 873 PL_dowarn = G_WARN_OFF;
3280af22
NIS
874 PL_doextract = FALSE;
875 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
876 PL_unsafe = FALSE;
877
878 Safefree(PL_inplace);
bd61b366 879 PL_inplace = NULL;
a7cb1f99 880 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
881
882 if (PL_e_script) {
883 SvREFCNT_dec(PL_e_script);
a0714e2c 884 PL_e_script = NULL;
8ebc5c01
PP
885 }
886
bf9cdc68
RG
887 PL_perldb = 0;
888
8ebc5c01
PP
889 /* magical thingies */
890
e23d9e2f
CS
891 SvREFCNT_dec(PL_ofsgv); /* *, */
892 PL_ofsgv = NULL;
5f05dabc 893
7889fe52 894 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 895 PL_ors_sv = NULL;
8ebc5c01 896
3280af22 897 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 898 PL_rs = NULL;
dc92893f 899
d33b2eba 900 Safefree(PL_osname); /* $^O */
bd61b366 901 PL_osname = NULL;
5f05dabc 902
3280af22 903 SvREFCNT_dec(PL_statname);
a0714e2c
SS
904 PL_statname = NULL;
905 PL_statgv = NULL;
5f05dabc 906
8ebc5c01
PP
907 /* defgv, aka *_ should be taken care of elsewhere */
908
8ebc5c01 909 /* clean up after study() */
3280af22 910 SvREFCNT_dec(PL_lastscream);
a0714e2c 911 PL_lastscream = NULL;
3280af22
NIS
912 Safefree(PL_screamfirst);
913 PL_screamfirst = 0;
914 Safefree(PL_screamnext);
915 PL_screamnext = 0;
8ebc5c01 916
7d5ea4e7
GS
917 /* float buffer */
918 Safefree(PL_efloatbuf);
bd61b366 919 PL_efloatbuf = NULL;
7d5ea4e7
GS
920 PL_efloatsize = 0;
921
8ebc5c01 922 /* startup and shutdown function lists */
3280af22 923 SvREFCNT_dec(PL_beginav);
5a837c8f 924 SvREFCNT_dec(PL_beginav_save);
3280af22 925 SvREFCNT_dec(PL_endav);
7d30b5c4 926 SvREFCNT_dec(PL_checkav);
ece599bd 927 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
928 SvREFCNT_dec(PL_unitcheckav);
929 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 930 SvREFCNT_dec(PL_initav);
7d49f689
NC
931 PL_beginav = NULL;
932 PL_beginav_save = NULL;
933 PL_endav = NULL;
934 PL_checkav = NULL;
935 PL_checkav_save = NULL;
3c10abe3
AG
936 PL_unitcheckav = NULL;
937 PL_unitcheckav_save = NULL;
7d49f689 938 PL_initav = NULL;
5618dfe8 939
8ebc5c01 940 /* shortcuts just get cleared */
a0714e2c
SS
941 PL_envgv = NULL;
942 PL_incgv = NULL;
943 PL_hintgv = NULL;
944 PL_errgv = NULL;
945 PL_argvgv = NULL;
946 PL_argvoutgv = NULL;
947 PL_stdingv = NULL;
948 PL_stderrgv = NULL;
949 PL_last_in_gv = NULL;
950 PL_replgv = NULL;
951 PL_DBgv = NULL;
952 PL_DBline = NULL;
953 PL_DBsub = NULL;
954 PL_DBsingle = NULL;
955 PL_DBtrace = NULL;
956 PL_DBsignal = NULL;
601f1833 957 PL_DBcv = NULL;
7d49f689 958 PL_dbargs = NULL;
5c284bb0 959 PL_debstash = NULL;
8ebc5c01 960
7a1c5554 961 SvREFCNT_dec(PL_argvout_stack);
7d49f689 962 PL_argvout_stack = NULL;
8ebc5c01 963
5c831c24 964 SvREFCNT_dec(PL_modglobal);
5c284bb0 965 PL_modglobal = NULL;
5c831c24 966 SvREFCNT_dec(PL_preambleav);
7d49f689 967 PL_preambleav = NULL;
5c831c24 968 SvREFCNT_dec(PL_subname);
a0714e2c 969 PL_subname = NULL;
ca0c25f6 970#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 971 SvREFCNT_dec(PL_pidstatus);
5c284bb0 972 PL_pidstatus = NULL;
ca0c25f6 973#endif
5c831c24 974 SvREFCNT_dec(PL_toptarget);
a0714e2c 975 PL_toptarget = NULL;
5c831c24 976 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
977 PL_bodytarget = NULL;
978 PL_formtarget = NULL;
5c831c24 979
d33b2eba 980 /* free locale stuff */
b9582b6a 981#ifdef USE_LOCALE_COLLATE
d33b2eba 982 Safefree(PL_collation_name);
bd61b366 983 PL_collation_name = NULL;
b9582b6a 984#endif
d33b2eba 985
b9582b6a 986#ifdef USE_LOCALE_NUMERIC
d33b2eba 987 Safefree(PL_numeric_name);
bd61b366 988 PL_numeric_name = NULL;
a453c169 989 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 990 PL_numeric_radix_sv = NULL;
b9582b6a 991#endif
d33b2eba 992
5c831c24
GS
993 /* clear utf8 character classes */
994 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
995 SvREFCNT_dec(PL_utf8_ascii);
996 SvREFCNT_dec(PL_utf8_alpha);
997 SvREFCNT_dec(PL_utf8_space);
998 SvREFCNT_dec(PL_utf8_cntrl);
999 SvREFCNT_dec(PL_utf8_graph);
1000 SvREFCNT_dec(PL_utf8_digit);
1001 SvREFCNT_dec(PL_utf8_upper);
1002 SvREFCNT_dec(PL_utf8_lower);
1003 SvREFCNT_dec(PL_utf8_print);
1004 SvREFCNT_dec(PL_utf8_punct);
1005 SvREFCNT_dec(PL_utf8_xdigit);
1006 SvREFCNT_dec(PL_utf8_mark);
1007 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1008 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1009 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1010 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1011 SvREFCNT_dec(PL_utf8_idstart);
1012 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c 1013 PL_utf8_alnum = NULL;
a0714e2c
SS
1014 PL_utf8_ascii = NULL;
1015 PL_utf8_alpha = NULL;
1016 PL_utf8_space = NULL;
1017 PL_utf8_cntrl = NULL;
1018 PL_utf8_graph = NULL;
1019 PL_utf8_digit = NULL;
1020 PL_utf8_upper = NULL;
1021 PL_utf8_lower = NULL;
1022 PL_utf8_print = NULL;
1023 PL_utf8_punct = NULL;
1024 PL_utf8_xdigit = NULL;
1025 PL_utf8_mark = NULL;
1026 PL_utf8_toupper = NULL;
1027 PL_utf8_totitle = NULL;
1028 PL_utf8_tolower = NULL;
1029 PL_utf8_tofold = NULL;
1030 PL_utf8_idstart = NULL;
1031 PL_utf8_idcont = NULL;
5c831c24 1032
971a9dd3 1033 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1034 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1035 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1036 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1037 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1038 CopFILE_free(&PL_compiling);
1039 CopSTASH_free(&PL_compiling);
5c831c24 1040
a0d0e21e 1041 /* Prepare to destruct main symbol table. */
5f05dabc 1042
3280af22
NIS
1043 hv = PL_defstash;
1044 PL_defstash = 0;
a0d0e21e 1045 SvREFCNT_dec(hv);
5c831c24 1046 SvREFCNT_dec(PL_curstname);
a0714e2c 1047 PL_curstname = NULL;
a0d0e21e 1048
5a844595
GS
1049 /* clear queued errors */
1050 SvREFCNT_dec(PL_errors);
a0714e2c 1051 PL_errors = NULL;
5a844595 1052
dd69841b
BB
1053 SvREFCNT_dec(PL_isarev);
1054
a0d0e21e 1055 FREETMPS;
9b387841 1056 if (destruct_level >= 2) {
3280af22 1057 if (PL_scopestack_ix != 0)
9b387841
NC
1058 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1059 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1060 (long)PL_scopestack_ix);
3280af22 1061 if (PL_savestack_ix != 0)
9b387841
NC
1062 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1063 "Unbalanced saves: %ld more saves than restores\n",
1064 (long)PL_savestack_ix);
3280af22 1065 if (PL_tmps_floor != -1)
9b387841
NC
1066 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1067 (long)PL_tmps_floor + 1);
a0d0e21e 1068 if (cxstack_ix != -1)
9b387841
NC
1069 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1070 (long)cxstack_ix + 1);
a0d0e21e 1071 }
8990e307
LW
1072
1073 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1074
1075 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1076 while (sv_clean_all() > 2)
5226ed68
JH
1077 ;
1078
d4777f27
GS
1079 AvREAL_off(PL_fdpid); /* no surviving entries */
1080 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1081 PL_fdpid = NULL;
d33b2eba 1082
6c644e78
GS
1083#ifdef HAVE_INTERP_INTERN
1084 sys_intern_clear();
1085#endif
1086
6e72f9df
PP
1087 /* Destruct the global string table. */
1088 {
1089 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1090 * so that sv_free() won't fail on them.
80459961
NC
1091 * Now that the global string table is using a single hunk of memory
1092 * for both HE and HEK, we either need to explicitly unshare it the
1093 * correct way, or actually free things here.
6e72f9df 1094 */
80459961
NC
1095 I32 riter = 0;
1096 const I32 max = HvMAX(PL_strtab);
c4420975 1097 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1098 HE *hent = array[0];
1099
6e72f9df 1100 for (;;) {
0453d815 1101 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1102 HE * const next = HeNEXT(hent);
9014280d 1103 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1104 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1105 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1106 Safefree(hent);
1107 hent = next;
6e72f9df
PP
1108 }
1109 if (!hent) {
1110 if (++riter > max)
1111 break;
1112 hent = array[riter];
1113 }
1114 }
80459961
NC
1115
1116 Safefree(array);
1117 HvARRAY(PL_strtab) = 0;
1118 HvTOTALKEYS(PL_strtab) = 0;
1119 HvFILL(PL_strtab) = 0;
6e72f9df 1120 }
3280af22 1121 SvREFCNT_dec(PL_strtab);
6e72f9df 1122
e652bb2f 1123#ifdef USE_ITHREADS
c21d1a0f 1124 /* free the pointer tables used for cloning */
a0739874 1125 ptr_table_free(PL_ptr_table);
bf9cdc68 1126 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1127#endif
a0739874 1128
d33b2eba
GS
1129 /* free special SVs */
1130
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1135
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1140
9f375a43
DM
1141 {
1142 int i;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1148 }
1149 }
1150
0453d815 1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1153
eba0f806
DM
1154#ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1156 SV* sva;
1157 SV* sv;
1158 register SV* svend;
1159
ad64d0ec 1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
1163 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1165 " flags=0x%"UVxf
fd0854ff
DM
1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
1167 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1168 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1169 pTHX__VALUE,
fd0854ff
DM
1170 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1171 sv->sv_debug_line,
1172 sv->sv_debug_inpad ? "for" : "by",
1173 sv->sv_debug_optype ?
1174 PL_op_name[sv->sv_debug_optype]: "(none)",
1175 sv->sv_debug_cloned ? " (cloned)" : ""
1176 );
2aa47728 1177#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1178 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1179#endif
eba0f806
DM
1180 }
1181 }
1182 }
1183 }
2aa47728
NC
1184#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1185 {
1186 int status;
1187 fd_set rset;
1188 /* Wait for up to 4 seconds for child to terminate.
1189 This seems to be the least effort way of timing out on reaping
1190 its exit status. */
1191 struct timeval waitfor = {4, 0};
41e4abd8 1192 int sock = PL_dumper_fd;
2aa47728
NC
1193
1194 shutdown(sock, 1);
1195 FD_ZERO(&rset);
1196 FD_SET(sock, &rset);
1197 select(sock + 1, &rset, NULL, NULL, &waitfor);
1198 waitpid(child, &status, WNOHANG);
1199 close(sock);
1200 }
1201#endif
eba0f806 1202#endif
77abb4c6
NC
1203#ifdef DEBUG_LEAKING_SCALARS_ABORT
1204 if (PL_sv_count)
1205 abort();
1206#endif
bf9cdc68 1207 PL_sv_count = 0;
eba0f806 1208
f1fac472
NC
1209#ifdef PERL_DEBUG_READONLY_OPS
1210 free(PL_slabs);
1211 PL_slabs = NULL;
1212 PL_slab_count = 0;
1213#endif
eba0f806 1214
56a2bab7 1215#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1216 /* No more IO - including error messages ! */
1217 PerlIO_cleanup(aTHX);
1218#endif
1219
9f4bd222 1220 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1221 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1222 for no arg - and will try and SvREFCNT_dec it.
1223 */
1224 SvREFCNT(&PL_sv_undef) = 0;
1225 SvREADONLY_off(&PL_sv_undef);
1226
3280af22 1227 Safefree(PL_origfilename);
bd61b366 1228 PL_origfilename = NULL;
3280af22 1229 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1230 PL_reg_start_tmp = (char**)NULL;
1231 PL_reg_start_tmpl = 0;
43c5f42d 1232 Safefree(PL_reg_curpm);
82ba1be6 1233 Safefree(PL_reg_poscache);
dd28f7bb 1234 free_tied_hv_pool();
3280af22 1235 Safefree(PL_op_mask);
cf36064f 1236 Safefree(PL_psig_name);
bf9cdc68 1237 PL_psig_name = (SV**)NULL;
d525a7b2 1238 PL_psig_ptr = (SV**)NULL;
ce08f86c 1239 Safefree(PL_psig_pend);
bf9cdc68 1240 PL_psig_pend = (int*)NULL;
31c91b43
LR
1241 {
1242 /* We need to NULL PL_psig_pend first, so that
1243 signal handlers know not to use it */
1244 int *psig_save = PL_psig_pend;
1245 PL_psig_pend = (int*)NULL;
1246 Safefree(psig_save);
1247 }
a0714e2c 1248 PL_formfeed = NULL;
6e72f9df 1249 nuke_stacks();
bf9cdc68
RG
1250 PL_tainting = FALSE;
1251 PL_taint_warn = FALSE;
3280af22 1252 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1253 PL_debug = 0;
ac27b0f5 1254
a0d0e21e 1255 DEBUG_P(debprofdump());
d33b2eba 1256
e5dd39fc 1257#ifdef USE_REENTRANT_API
10bc17b6 1258 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1259#endif
1260
612f20c3
GS
1261 sv_free_arenas();
1262
5d9a96ca
DM
1263 while (PL_regmatch_slab) {
1264 regmatch_slab *s = PL_regmatch_slab;
1265 PL_regmatch_slab = PL_regmatch_slab->next;
1266 Safefree(s);
1267 }
1268
fc36a67e
PP
1269 /* As the absolutely last thing, free the non-arena SV for mess() */
1270
3280af22 1271 if (PL_mess_sv) {
f350b448
NC
1272 /* we know that type == SVt_PVMG */
1273
9c63abab 1274 /* it could have accumulated taint magic */
f350b448
NC
1275 MAGIC* mg;
1276 MAGIC* moremagic;
1277 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1278 moremagic = mg->mg_moremagic;
1279 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1280 && mg->mg_len >= 0)
1281 Safefree(mg->mg_ptr);
1282 Safefree(mg);
9c63abab 1283 }
f350b448 1284
fc36a67e 1285 /* we know that type >= SVt_PV */
8bd4d4c5 1286 SvPV_free(PL_mess_sv);
3280af22
NIS
1287 Safefree(SvANY(PL_mess_sv));
1288 Safefree(PL_mess_sv);
a0714e2c 1289 PL_mess_sv = NULL;
fc36a67e 1290 }
37038d91 1291 return STATUS_EXIT;
79072805
LW
1292}
1293
954c1994
GS
1294/*
1295=for apidoc perl_free
1296
1297Releases a Perl interpreter. See L<perlembed>.
1298
1299=cut
1300*/
1301
79072805 1302void
0cb96387 1303perl_free(pTHXx)
79072805 1304{
5174512c
NC
1305 dVAR;
1306
7918f24d
NC
1307 PERL_ARGS_ASSERT_PERL_FREE;
1308
c301d606
DM
1309 if (PL_veto_cleanup)
1310 return;
1311
7cb608b5 1312#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1313 {
1314 /*
1315 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1316 * value as we're probably hunting memory leaks then
1317 */
1318 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1319 if (!s || atoi(s) == 0) {
4fd0a9b8 1320 const U32 old_debug = PL_debug;
55ef9aae
MHM
1321 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1322 thread at thread exit. */
4fd0a9b8
NC
1323 if (DEBUG_m_TEST) {
1324 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1325 "free this thread's memory\n");
1326 PL_debug &= ~ DEBUG_m_FLAG;
1327 }
55ef9aae
MHM
1328 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1329 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1330 PL_debug = old_debug;
55ef9aae
MHM
1331 }
1332 }
7cb608b5
NC
1333#endif
1334
acfe0abc 1335#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1336# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1337 {
acfe0abc 1338# ifdef NETWARE
7af12a34 1339 void *host = nw_internal_host;
acfe0abc 1340# else
7af12a34 1341 void *host = w32_internal_host;
acfe0abc 1342# endif
7af12a34 1343 PerlMem_free(aTHXx);
acfe0abc 1344# ifdef NETWARE
7af12a34 1345 nw_delete_internal_host(host);
acfe0abc 1346# else
7af12a34 1347 win32_delete_internal_host(host);
acfe0abc 1348# endif
7af12a34 1349 }
1c0ca838
GS
1350# else
1351 PerlMem_free(aTHXx);
1352# endif
acfe0abc
GS
1353#else
1354 PerlMem_free(aTHXx);
76e3520e 1355#endif
79072805
LW
1356}
1357
b7f7fff6 1358#if defined(USE_ITHREADS)
aebd1ac7
GA
1359/* provide destructors to clean up the thread key when libperl is unloaded */
1360#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1361
826955bd 1362#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1363#pragma fini "perl_fini"
666ad1ec
GA
1364#elif defined(__sun) && !defined(__GNUC__)
1365#pragma fini (perl_fini)
aebd1ac7
GA
1366#endif
1367
0dbb1585
AL
1368static void
1369#if defined(__GNUC__)
1370__attribute__((destructor))
aebd1ac7 1371#endif
de009b76 1372perl_fini(void)
aebd1ac7 1373{
27da23d5 1374 dVAR;
c301d606 1375 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1376 FREE_THREAD_KEY;
1377}
1378
1379#endif /* WIN32 */
1380#endif /* THREADS */
1381
4b556e6c 1382void
864dbfa3 1383Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1384{
97aff369 1385 dVAR;
3280af22
NIS
1386 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1387 PL_exitlist[PL_exitlistlen].fn = fn;
1388 PL_exitlist[PL_exitlistlen].ptr = ptr;
1389 ++PL_exitlistlen;
4b556e6c
JD
1390}
1391
56cf6df8
RGS
1392#ifdef HAS_PROCSELFEXE
1393/* This is a function so that we don't hold on to MAXPATHLEN
1394 bytes of stack longer than necessary
1395 */
1396STATIC void
e1ec3a88 1397S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1398{
1399 char buf[MAXPATHLEN];
1400 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1401
1402 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1403 includes a spurious NUL which will cause $^X to fail in system
1404 or backticks (this will prevent extensions from being built and
1405 many tests from working). readlink is not meant to add a NUL.
1406 Normal readlink works fine.
1407 */
1408 if (len > 0 && buf[len-1] == '\0') {
1409 len--;
1410 }
1411
1412 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1413 returning the text "unknown" from the readlink rather than the path
1414 to the executable (or returning an error from the readlink). Any valid
1415 path has a '/' in it somewhere, so use that to validate the result.
1416 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1417 */
1418 if (len > 0 && memchr(buf, '/', len)) {
1419 sv_setpvn(sv,buf,len);
1420 }
1421 else {
1422 sv_setpv(sv,arg0);
1423 }
1424}
1425#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1426
1427STATIC void
1428S_set_caret_X(pTHX) {
97aff369 1429 dVAR;
fafc274c 1430 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1431 if (tmpgv) {
1432#ifdef HAS_PROCSELFEXE
1433 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1434#else
1435#ifdef OS2
c69033f2 1436 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1437#else
c69033f2 1438 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1439#endif
1440#endif
1441 }
1442}
1443
954c1994
GS
1444/*
1445=for apidoc perl_parse
1446
1447Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1448
1449=cut
1450*/
1451
79072805 1452int
0cb96387 1453perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1454{
27da23d5 1455 dVAR;
6224f72b 1456 I32 oldscope;
6224f72b 1457 int ret;
db36c5a1 1458 dJMPENV;
8d063cd8 1459
7918f24d
NC
1460 PERL_ARGS_ASSERT_PERL_PARSE;
1461#ifndef MULTIPLICITY
ed6c66dd 1462 PERL_UNUSED_ARG(my_perl);
7918f24d 1463#endif
9d4ba2ae 1464
b0891165
JH
1465#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1466 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1467 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1468 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1469 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1470 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1471 if (!PL_rehash_seed_set)
1472 PL_rehash_seed = get_hash_seed();
b0891165 1473 {
9d4ba2ae 1474 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1475
1b6737cc
AL
1476 if (s && (atoi(s) == 1))
1477 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1478 }
1479#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1480
3280af22 1481 PL_origargc = argc;
e2975953 1482 PL_origargv = argv;
a0d0e21e 1483
a2722ac9
GA
1484 if (PL_origalen != 0) {
1485 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1486 }
1487 else {
3cb9023d
JH
1488 /* Set PL_origalen be the sum of the contiguous argv[]
1489 * elements plus the size of the env in case that it is
e9137a8e 1490 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1491 * as the maximum modifiable length of $0. In the worst case
1492 * the area we are able to modify is limited to the size of
43c32782 1493 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1494 * --jhi */
e1ec3a88 1495 const char *s = NULL;
54bfe034 1496 int i;
1b6737cc 1497 const UV mask =
7d8e7db3 1498 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1499 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1500 const UV aligned =
43c32782
JH
1501 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1502
1503 /* See if all the arguments are contiguous in memory. Note
1504 * that 'contiguous' is a loose term because some platforms
1505 * align the argv[] and the envp[]. If the arguments look
1506 * like non-aligned, assume that they are 'strictly' or
1507 * 'traditionally' contiguous. If the arguments look like
1508 * aligned, we just check that they are within aligned
1509 * PTRSIZE bytes. As long as no system has something bizarre
1510 * like the argv[] interleaved with some other data, we are
1511 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1512 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1513 while (*s) s++;
1514 for (i = 1; i < PL_origargc; i++) {
1515 if ((PL_origargv[i] == s + 1
43c32782 1516#ifdef OS2
c8941eeb 1517 || PL_origargv[i] == s + 2
43c32782 1518#endif
c8941eeb
JH
1519 )
1520 ||
1521 (aligned &&
1522 (PL_origargv[i] > s &&
1523 PL_origargv[i] <=
1524 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1525 )
1526 {
1527 s = PL_origargv[i];
1528 while (*s) s++;
1529 }
1530 else
1531 break;
54bfe034 1532 }
54bfe034 1533 }
a4a109c2
JD
1534
1535#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1536 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1537 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1538 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1539 ||
1540 (aligned &&
1541 (PL_origenviron[0] > s &&
1542 PL_origenviron[0] <=
1543 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1544 )
1545 {
9d419b5f 1546#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1547 s = PL_origenviron[0];
1548 while (*s) s++;
1549#endif
bd61b366 1550 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1551 /* Force copy of environment. */
1552 for (i = 1; PL_origenviron[i]; i++) {
1553 if (PL_origenviron[i] == s + 1
1554 ||
1555 (aligned &&
1556 (PL_origenviron[i] > s &&
1557 PL_origenviron[i] <=
1558 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1559 )
1560 {
1561 s = PL_origenviron[i];
1562 while (*s) s++;
1563 }
1564 else
1565 break;
54bfe034 1566 }
43c32782 1567 }
54bfe034 1568 }
a4a109c2
JD
1569#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1570
2d2af554 1571 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1572 }
1573
3280af22 1574 if (PL_do_undump) {
a0d0e21e
LW
1575
1576 /* Come here if running an undumped a.out. */
1577
3280af22
NIS
1578 PL_origfilename = savepv(argv[0]);
1579 PL_do_undump = FALSE;
a0d0e21e 1580 cxstack_ix = -1; /* start label stack again */
748a9306 1581 init_ids();
b7975bdd
NC
1582 assert (!PL_tainted);
1583 TAINT;
1584 S_set_caret_X(aTHX);
1585 TAINT_NOT;
a0d0e21e
LW
1586 init_postdump_symbols(argc,argv,env);
1587 return 0;
1588 }
1589
3280af22 1590 if (PL_main_root) {
3280af22 1591 op_free(PL_main_root);
5f66b61c 1592 PL_main_root = NULL;
ff0cee69 1593 }
5f66b61c 1594 PL_main_start = NULL;
3280af22 1595 SvREFCNT_dec(PL_main_cv);
601f1833 1596 PL_main_cv = NULL;
79072805 1597
3280af22
NIS
1598 time(&PL_basetime);
1599 oldscope = PL_scopestack_ix;
599cee73 1600 PL_dowarn = G_WARN_OFF;
f86702cc 1601
14dd3ad8 1602 JMPENV_PUSH(ret);
6224f72b 1603 switch (ret) {
312caa8e 1604 case 0:
14dd3ad8 1605 parse_body(env,xsinit);
3c10abe3
AG
1606 if (PL_unitcheckav)
1607 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1608 if (PL_checkav)
1609 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1610 ret = 0;
1611 break;
6224f72b
GS
1612 case 1:
1613 STATUS_ALL_FAILURE;
1614 /* FALL THROUGH */
1615 case 2:
1616 /* my_exit() was called */
3280af22 1617 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1618 LEAVE;
1619 FREETMPS;
3280af22 1620 PL_curstash = PL_defstash;
3c10abe3
AG
1621 if (PL_unitcheckav)
1622 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1623 if (PL_checkav)
1624 call_list(oldscope, PL_checkav);
37038d91 1625 ret = STATUS_EXIT;
14dd3ad8 1626 break;
6224f72b 1627 case 3:
bf49b057 1628 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1629 ret = 1;
1630 break;
6224f72b 1631 }
14dd3ad8
GS
1632 JMPENV_POP;
1633 return ret;
1634}
1635
4a5df386
NC
1636/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1637 miniperl, and we need to see those flags reflected in the values here. */
1638
1639/* What this returns is subject to change. Use the public interface in Config.
1640 */
1641static void
1642S_Internals_V(pTHX_ CV *cv)
1643{
1644 dXSARGS;
1645#ifdef LOCAL_PATCH_COUNT
1646 const int local_patch_count = LOCAL_PATCH_COUNT;
1647#else
1648 const int local_patch_count = 0;
1649#endif
2dc296d2 1650 const int entries = 3 + local_patch_count;
4a5df386
NC
1651 int i;
1652 static char non_bincompat_options[] =
1653# ifdef DEBUGGING
1654 " DEBUGGING"
1655# endif
1656# ifdef NO_MATHOMS
1657 " NO_MATHOMS"
1658# endif
1659# ifdef PERL_DISABLE_PMC
1660 " PERL_DISABLE_PMC"
1661# endif
1662# ifdef PERL_DONT_CREATE_GVSV
1663 " PERL_DONT_CREATE_GVSV"
1664# endif
1665# ifdef PERL_IS_MINIPERL
1666 " PERL_IS_MINIPERL"
1667# endif
1668# ifdef PERL_MALLOC_WRAP
1669 " PERL_MALLOC_WRAP"
1670# endif
1671# ifdef PERL_MEM_LOG
1672 " PERL_MEM_LOG"
1673# endif
1674# ifdef PERL_MEM_LOG_NOIMPL
1675 " PERL_MEM_LOG_NOIMPL"
1676# endif
1677# ifdef PERL_USE_DEVEL
1678 " PERL_USE_DEVEL"
1679# endif
1680# ifdef PERL_USE_SAFE_PUTENV
1681 " PERL_USE_SAFE_PUTENV"
1682# endif
1683# ifdef USE_SITECUSTOMIZE
1684 " USE_SITECUSTOMIZE"
1685# endif
1686# ifdef USE_FAST_STDIO
1687 " USE_FAST_STDIO"
1688# endif
1689 ;
1690 PERL_UNUSED_ARG(cv);
1691 PERL_UNUSED_ARG(items);
1692
1693 EXTEND(SP, entries);
1694
1695 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1696 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1697 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1698
1699#ifdef __DATE__
1700# ifdef __TIME__
1701 PUSHs(Perl_newSVpvn_flags(aTHX_
1702 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1703 SVs_TEMP));
1704# else
1705 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1706 SVs_TEMP));
1707# endif
1708#else
1709 PUSHs(&PL_sv_undef);
1710#endif
1711
4a5df386
NC
1712 for (i = 1; i <= local_patch_count; i++) {
1713 /* This will be an undef, if PL_localpatches[i] is NULL. */
1714 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1715 }
1716
1717 XSRETURN(entries);
1718}
1719
be71fc8f
NC
1720#define INCPUSH_UNSHIFT 0x01
1721#define INCPUSH_ADD_OLD_VERS 0x02
1722#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1723#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1724#define INCPUSH_NOT_BASEDIR 0x10
1725#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1726#define INCPUSH_ADD_SUB_DIRS \
1727 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1728
312caa8e 1729STATIC void *
14dd3ad8 1730S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1731{
27da23d5 1732 dVAR;
2f9285f8 1733 PerlIO *rsfp;
312caa8e 1734 int argc = PL_origargc;
8f42b153 1735 char **argv = PL_origargv;
e1ec3a88 1736 const char *scriptname = NULL;
312caa8e 1737 VOL bool dosearch = FALSE;
c7030b81 1738 register char c;
bd61b366 1739 const char *cddir = NULL;
ab019eaa 1740#ifdef USE_SITECUSTOMIZE
20ef40cf 1741 bool minus_f = FALSE;
ab019eaa 1742#endif
009d90df 1743 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1744 bool add_read_e_script = FALSE;
009d90df
DM
1745
1746 SvGROW(linestr_sv, 80);
76f68e9b 1747 sv_setpvs(linestr_sv,"");
312caa8e 1748
6224f72b 1749 init_main_stash();
54310121 1750
c7030b81
NC
1751 {
1752 const char *s;
6224f72b
GS
1753 for (argc--,argv++; argc > 0; argc--,argv++) {
1754 if (argv[0][0] != '-' || !argv[0][1])
1755 break;
6224f72b
GS
1756 s = argv[0]+1;
1757 reswitch:
47f56822 1758 switch ((c = *s)) {
729a02f2 1759 case 'C':
1d5472a9
GS
1760#ifndef PERL_STRICT_CR
1761 case '\r':
1762#endif
6224f72b
GS
1763 case ' ':
1764 case '0':
1765 case 'F':
1766 case 'a':
1767 case 'c':
1768 case 'd':
1769 case 'D':
1770 case 'h':
1771 case 'i':
1772 case 'l':
1773 case 'M':
1774 case 'm':
1775 case 'n':
1776 case 'p':
1777 case 's':
1778 case 'u':
1779 case 'U':
1780 case 'v':
599cee73
PM
1781 case 'W':
1782 case 'X':
6224f72b 1783 case 'w':
97bd5664 1784 if ((s = moreswitches(s)))
6224f72b
GS
1785 goto reswitch;
1786 break;
33b78306 1787
1dbad523 1788 case 't':
22f7c9c9 1789 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1790 if( !PL_tainting ) {
1791 PL_taint_warn = TRUE;
1792 PL_tainting = TRUE;
1793 }
1794 s++;
1795 goto reswitch;
6224f72b 1796 case 'T':
22f7c9c9 1797 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1798 PL_tainting = TRUE;
317ea90d 1799 PL_taint_warn = FALSE;
6224f72b
GS
1800 s++;
1801 goto reswitch;
f86702cc 1802
bc9b29db
RH
1803 case 'E':
1804 PL_minus_E = TRUE;
1805 /* FALL THROUGH */
6224f72b 1806 case 'e':
f20b2998 1807 forbid_setid('e', FALSE);
3280af22 1808 if (!PL_e_script) {
396482e1 1809 PL_e_script = newSVpvs("");
5486870f 1810 add_read_e_script = TRUE;
6224f72b
GS
1811 }
1812 if (*++s)
3280af22 1813 sv_catpv(PL_e_script, s);
6224f72b 1814 else if (argv[1]) {
3280af22 1815 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1816 argc--,argv++;
1817 }
1818 else
47f56822 1819 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1820 sv_catpvs(PL_e_script, "\n");
6224f72b 1821 break;
afe37c7d 1822
20ef40cf 1823 case 'f':
f5542d3a 1824#ifdef USE_SITECUSTOMIZE
20ef40cf 1825 minus_f = TRUE;
f5542d3a 1826#endif
20ef40cf
GA
1827 s++;
1828 goto reswitch;
1829
6224f72b 1830 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1831 forbid_setid('I', FALSE);
bd61b366 1832 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1833 argc--,argv++;
1834 }
6224f72b 1835 if (s && *s) {
0df16ed7 1836 STRLEN len = strlen(s);
55b4bc1c 1837 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1838 }
1839 else
a67e862a 1840 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1841 break;
6224f72b 1842 case 'S':
f20b2998 1843 forbid_setid('S', FALSE);
6224f72b
GS
1844 dosearch = TRUE;
1845 s++;
1846 goto reswitch;
1847 case 'V':
7edfd0ef
NC
1848 {
1849 SV *opts_prog;
1850
7edfd0ef 1851 if (*++s != ':') {
37ca4a5b 1852 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1853 }
1854 else {
1855 ++s;
1856 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1857 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1858 0, s, 0);
1859 s += strlen(s);
1860 }
37ca4a5b 1861 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1862 /* don't look for script or read stdin */
1863 scriptname = BIT_BUCKET;
1864 goto reswitch;
6224f72b 1865 }
6224f72b 1866 case 'x':
3280af22 1867 PL_doextract = TRUE;
6224f72b 1868 s++;
304334da 1869 if (*s)
f4c556ac 1870 cddir = s;
6224f72b
GS
1871 break;
1872 case 0:
1873 break;
1874 case '-':
1875 if (!*++s || isSPACE(*s)) {
1876 argc--,argv++;
1877 goto switch_end;
1878 }
1879 /* catch use of gnu style long options */
1880 if (strEQ(s, "version")) {
dd374669 1881 s = (char *)"v";
6224f72b
GS
1882 goto reswitch;
1883 }
1884 if (strEQ(s, "help")) {
dd374669 1885 s = (char *)"h";
6224f72b
GS
1886 goto reswitch;
1887 }
1888 s--;
1889 /* FALL THROUGH */
1890 default:
cea2e8a9 1891 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1892 }
1893 }
c7030b81
NC
1894 }
1895
6224f72b 1896 switch_end:
54310121 1897
c7030b81
NC
1898 {
1899 char *s;
1900
f675dbe5
CB
1901 if (
1902#ifndef SECURE_INTERNAL_GETENV
1903 !PL_tainting &&
1904#endif
cf756827 1905 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1906 {
74288ac8
GS
1907 while (isSPACE(*s))
1908 s++;
317ea90d 1909 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1910 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1911 PL_tainting = TRUE;
317ea90d
MS
1912 PL_taint_warn = FALSE;
1913 }
74288ac8 1914 else {
bd61b366 1915 char *popt_copy = NULL;
74288ac8 1916 while (s && *s) {
54913509 1917 const char *d;
74288ac8
GS
1918 while (isSPACE(*s))
1919 s++;
1920 if (*s == '-') {
1921 s++;
1922 if (isSPACE(*s))
1923 continue;
1924 }
4ea8f8fb 1925 d = s;
74288ac8
GS
1926 if (!*s)
1927 break;
2b622f1a 1928 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1929 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1930 while (++s && *s) {
1931 if (isSPACE(*s)) {
cf756827 1932 if (!popt_copy) {
bfa6c418
NC
1933 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1934 s = popt_copy + (s - d);
1935 d = popt_copy;
cf756827 1936 }
4ea8f8fb
MS
1937 *s++ = '\0';
1938 break;
1939 }
1940 }
1c4db469 1941 if (*d == 't') {
317ea90d
MS
1942 if( !PL_tainting ) {
1943 PL_taint_warn = TRUE;
1944 PL_tainting = TRUE;
1945 }
1c4db469 1946 } else {
97bd5664 1947 moreswitches(d);
1c4db469 1948 }
6224f72b 1949 }
6224f72b
GS
1950 }
1951 }
c7030b81 1952 }
a0d0e21e 1953
87e06404 1954#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1955 if (!minus_f) {
404ad9dc
NC
1956 /* SITELIB_EXP is a function call on Win32.
1957 The games with local $! are to avoid setting errno if there is no
1958 sitecustomize script. */
1959 const char *const sitelib = SITELIB_EXP;
29a861e7 1960 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1961 Perl_newSVpvf(aTHX_
1962 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1963 }
1964#endif
1965
6224f72b
GS
1966 if (!scriptname)
1967 scriptname = argv[0];
3280af22 1968 if (PL_e_script) {
6224f72b
GS
1969 argc++,argv--;
1970 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1971 }
bd61b366 1972 else if (scriptname == NULL) {
6224f72b
GS
1973#ifdef MSDOS
1974 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1975 moreswitches("h");
6224f72b
GS
1976#endif
1977 scriptname = "-";
1978 }
1979
b7975bdd
NC
1980 /* Set $^X early so that it can be used for relocatable paths in @INC */
1981 assert (!PL_tainted);
1982 TAINT;
1983 S_set_caret_X(aTHX);
1984 TAINT_NOT;
2cace6ac 1985 init_perllib();
6224f72b 1986
a52eba0e 1987 {
f20b2998 1988 bool suidscript = FALSE;
829372d3 1989
cc69b689 1990 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1991
2f9285f8 1992 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1993 linestr_sv, rsfp);
6224f72b 1994
64ca3a65 1995#ifndef PERL_MICRO
a52eba0e
NC
1996# if defined(SIGCHLD) || defined(SIGCLD)
1997 {
1998# ifndef SIGCHLD
1999# define SIGCHLD SIGCLD
2000# endif
2001 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2002 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2003 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2004 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2005 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2006 }
0b5b802d 2007 }
a52eba0e 2008# endif
64ca3a65 2009#endif
0b5b802d 2010
e37778c2 2011 if (PL_doextract) {
faef540c 2012
f20b2998 2013 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2014 setuid scripts. */
2015 forbid_setid('x', suidscript);
f20b2998 2016 /* Hence you can't get here if suidscript is true */
faef540c 2017
2f9285f8 2018 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2019 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2020 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2021 }
f4c556ac 2022 }
6224f72b 2023
ea726b52 2024 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2025 CvUNIQUE_on(PL_compcv);
2026
dd2155a4 2027 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2028
dd69841b
BB
2029 PL_isarev = newHV();
2030
0c4f7ff0 2031 boot_core_PerlIO();
6224f72b 2032 boot_core_UNIVERSAL();
e1a479c5 2033 boot_core_mro();
4a5df386 2034 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2035
2036 if (xsinit)
acfe0abc 2037 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2038#ifndef PERL_MICRO
d0d72822 2039#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2040 init_os_extras();
6224f72b 2041#endif
64ca3a65 2042#endif
6224f72b 2043
29209bc5 2044#ifdef USE_SOCKS
1b9c9cf5
DH
2045# ifdef HAS_SOCKS5_INIT
2046 socks5_init(argv[0]);
2047# else
29209bc5 2048 SOCKSinit(argv[0]);
1b9c9cf5 2049# endif
ac27b0f5 2050#endif
29209bc5 2051
6224f72b
GS
2052 init_predump_symbols();
2053 /* init_postdump_symbols not currently designed to be called */
2054 /* more than once (ENV isn't cleared first, for example) */
2055 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2056 if (!PL_do_undump)
6224f72b
GS
2057 init_postdump_symbols(argc,argv,env);
2058
27da23d5
JH
2059 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2060 * or explicitly in some platforms.
085a54d9 2061 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2062 * look like the user wants to use UTF-8. */
a0fd4948 2063#if defined(__SYMBIAN32__)
27da23d5
JH
2064 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2065#endif
e27b5b51 2066# ifndef PERL_IS_MINIPERL
06e66572
JH
2067 if (PL_unicode) {
2068 /* Requires init_predump_symbols(). */
a05d7ebb 2069 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2070 IO* io;
2071 PerlIO* fp;
2072 SV* sv;
2073
a05d7ebb 2074 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2075 * and the default open disciplines. */
a05d7ebb
JH
2076 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2077 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2078 (fp = IoIFP(io)))
2079 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2080 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2081 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2082 (fp = IoOFP(io)))
2083 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2084 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2085 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2086 (fp = IoOFP(io)))
2087 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2088 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2089 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2090 SVt_PV)))) {
a05d7ebb
JH
2091 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2092 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2093 if (in) {
2094 if (out)
76f68e9b 2095 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2096 else
76f68e9b 2097 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2098 }
2099 else if (out)
76f68e9b 2100 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2101 SvSETMAGIC(sv);
2102 }
b310b053
JH
2103 }
2104 }
e27b5b51 2105#endif
b310b053 2106
c7030b81
NC
2107 {
2108 const char *s;
4ffa73a3
JH
2109 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2110 if (strEQ(s, "unsafe"))
2111 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2112 else if (strEQ(s, "safe"))
2113 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2114 else
2115 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2116 }
c7030b81 2117 }
4ffa73a3 2118
81d86705 2119#ifdef PERL_MAD
c7030b81
NC
2120 {
2121 const char *s;
81d86705
NC
2122 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2123 PL_madskills = 1;
2124 PL_minus_c = 1;
2125 if (!s || !s[0])
2126 PL_xmlfp = PerlIO_stdout();
2127 else {
2128 PL_xmlfp = PerlIO_open(s, "w");
2129 if (!PL_xmlfp)
2130 Perl_croak(aTHX_ "Can't open %s", s);
2131 }
1a9a51d4 2132 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2133 }
c7030b81
NC
2134 }
2135
2136 {
2137 const char *s;
81d86705
NC
2138 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2139 PL_madskills = atoi(s);
1a9a51d4 2140 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2141 }
c7030b81 2142 }
81d86705
NC
2143#endif
2144
5486870f 2145 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2146 PL_subname = newSVpvs("main");
6224f72b 2147
5486870f
DM
2148 if (add_read_e_script)
2149 filter_add(read_e_script, NULL);
2150
6224f72b
GS
2151 /* now parse the script */
2152
93189314 2153 SETERRNO(0,SS_NORMAL);
13765c85 2154 if (yyparse() || PL_parser->error_count) {
3280af22 2155 if (PL_minus_c)
cea2e8a9 2156 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2157 else {
cea2e8a9 2158 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2159 PL_origfilename);
6224f72b
GS
2160 }
2161 }
57843af0 2162 CopLINE_set(PL_curcop, 0);
3280af22 2163 PL_curstash = PL_defstash;
3280af22
NIS
2164 if (PL_e_script) {
2165 SvREFCNT_dec(PL_e_script);
a0714e2c 2166 PL_e_script = NULL;
6224f72b
GS
2167 }
2168
3280af22 2169 if (PL_do_undump)
6224f72b
GS
2170 my_unexec();
2171
57843af0
GS
2172 if (isWARN_ONCE) {
2173 SAVECOPFILE(PL_curcop);
2174 SAVECOPLINE(PL_curcop);
3280af22 2175 gv_check(PL_defstash);
57843af0 2176 }
6224f72b
GS
2177
2178 LEAVE;
2179 FREETMPS;
2180
2181#ifdef MYMALLOC
f6a607bc
RGS
2182 {
2183 const char *s;
6224f72b
GS
2184 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2185 dump_mstats("after compilation:");
f6a607bc 2186 }
6224f72b
GS
2187#endif
2188
2189 ENTER;
3280af22 2190 PL_restartop = 0;
312caa8e 2191 return NULL;
6224f72b
GS
2192}
2193
954c1994
GS
2194/*
2195=for apidoc perl_run
2196
2197Tells a Perl interpreter to run. See L<perlembed>.
2198
2199=cut
2200*/
2201
6224f72b 2202int
0cb96387 2203perl_run(pTHXx)
6224f72b 2204{
97aff369 2205 dVAR;
6224f72b 2206 I32 oldscope;
14dd3ad8 2207 int ret = 0;
db36c5a1 2208 dJMPENV;
6224f72b 2209
7918f24d
NC
2210 PERL_ARGS_ASSERT_PERL_RUN;
2211#ifndef MULTIPLICITY
ed6c66dd 2212 PERL_UNUSED_ARG(my_perl);
7918f24d 2213#endif
9d4ba2ae 2214
3280af22 2215 oldscope = PL_scopestack_ix;
96e176bf
CL
2216#ifdef VMS
2217 VMSISH_HUSHED = 0;
2218#endif
6224f72b 2219
14dd3ad8 2220 JMPENV_PUSH(ret);
6224f72b
GS
2221 switch (ret) {
2222 case 1:
2223 cxstack_ix = -1; /* start context stack again */
312caa8e 2224 goto redo_body;
14dd3ad8 2225 case 0: /* normal completion */
14dd3ad8
GS
2226 redo_body:
2227 run_body(oldscope);
14dd3ad8
GS
2228 /* FALL THROUGH */
2229 case 2: /* my_exit() */
3280af22 2230 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2231 LEAVE;
2232 FREETMPS;
3280af22 2233 PL_curstash = PL_defstash;
3a1ee7e8 2234 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2235 PL_endav && !PL_minus_c)
2236 call_list(oldscope, PL_endav);
6224f72b
GS
2237#ifdef MYMALLOC
2238 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2239 dump_mstats("after execution: ");
2240#endif
37038d91 2241 ret = STATUS_EXIT;
14dd3ad8 2242 break;
6224f72b 2243 case 3:
312caa8e
CS
2244 if (PL_restartop) {
2245 POPSTACK_TO(PL_mainstack);
2246 goto redo_body;
6224f72b 2247 }
bf49b057 2248 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2249 FREETMPS;
14dd3ad8
GS
2250 ret = 1;
2251 break;
6224f72b
GS
2252 }
2253
14dd3ad8
GS
2254 JMPENV_POP;
2255 return ret;
312caa8e
CS
2256}
2257
dd374669 2258STATIC void
14dd3ad8
GS
2259S_run_body(pTHX_ I32 oldscope)
2260{
97aff369 2261 dVAR;
6224f72b 2262 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2263 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2264
3280af22 2265 if (!PL_restartop) {
81d86705
NC
2266#ifdef PERL_MAD
2267 if (PL_xmlfp) {
2268 xmldump_all();
2269 exit(0); /* less likely to core dump than my_exit(0) */
2270 }
2271#endif
cf2782cd 2272#ifdef DEBUGGING
f0e3f042
CS
2273 if (DEBUG_x_TEST || DEBUG_B_TEST)
2274 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2275 if (!DEBUG_q_TEST)
2276 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2277#endif
6224f72b 2278
3280af22 2279 if (PL_minus_c) {
bf49b057 2280 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2281 my_exit(0);
2282 }
3280af22 2283 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2284 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2285 if (PL_initav)
2286 call_list(oldscope, PL_initav);
f1fac472
NC
2287#ifdef PERL_DEBUG_READONLY_OPS
2288 Perl_pending_Slabs_to_ro(aTHX);
2289#endif
6224f72b
GS
2290 }
2291
2292 /* do it */
2293
3280af22 2294 if (PL_restartop) {
533c011a 2295 PL_op = PL_restartop;
3280af22 2296 PL_restartop = 0;
cea2e8a9 2297 CALLRUNOPS(aTHX);
6224f72b 2298 }
3280af22
NIS
2299 else if (PL_main_start) {
2300 CvDEPTH(PL_main_cv) = 1;
533c011a 2301 PL_op = PL_main_start;
cea2e8a9 2302 CALLRUNOPS(aTHX);
6224f72b 2303 }
f6b3007c
JH
2304 my_exit(0);
2305 /* NOTREACHED */
6224f72b
GS
2306}
2307
954c1994 2308/*
ccfc67b7
JH
2309=head1 SV Manipulation Functions
2310
954c1994
GS
2311=for apidoc p||get_sv
2312
64ace3f8
NC
2313Returns the SV of the specified Perl scalar. C<flags> are passed to
2314C<gv_fetchpv>. If C<GV_ADD> is set and the
2315Perl variable does not exist then it will be created. If C<flags> is zero
2316and the variable does not exist then NULL is returned.
954c1994
GS
2317
2318=cut
2319*/
2320
6224f72b 2321SV*
64ace3f8 2322Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2323{
2324 GV *gv;
7918f24d
NC
2325
2326 PERL_ARGS_ASSERT_GET_SV;
2327
64ace3f8 2328 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2329 if (gv)
2330 return GvSV(gv);
a0714e2c 2331 return NULL;
6224f72b
GS
2332}
2333
954c1994 2334/*
ccfc67b7
JH
2335=head1 Array Manipulation Functions
2336
954c1994
GS
2337=for apidoc p||get_av
2338
cbfd0a87
NC
2339Returns the AV of the specified Perl array. C<flags> are passed to
2340C<gv_fetchpv>. If C<GV_ADD> is set and the
2341Perl variable does not exist then it will be created. If C<flags> is zero
2342and the variable does not exist then NULL is returned.
954c1994
GS
2343
2344=cut
2345*/
2346
6224f72b 2347AV*
cbfd0a87 2348Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2349{
cbfd0a87 2350 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2351
2352 PERL_ARGS_ASSERT_GET_AV;
2353
cbfd0a87 2354 if (flags)
6224f72b
GS
2355 return GvAVn(gv);
2356 if (gv)
2357 return GvAV(gv);
7d49f689 2358 return NULL;
6224f72b
GS
2359}
2360
954c1994 2361/*
ccfc67b7
JH
2362=head1 Hash Manipulation Functions
2363
954c1994
GS
2364=for apidoc p||get_hv
2365
6673a63c
NC
2366Returns the HV of the specified Perl hash. C<flags> are passed to
2367C<gv_fetchpv>. If C<GV_ADD> is set and the
2368Perl variable does not exist then it will be created. If C<flags> is zero
2369and the variable does not exist then NULL is returned.
954c1994
GS
2370
2371=cut
2372*/
2373
6224f72b 2374HV*
6673a63c 2375Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2376{
6673a63c 2377 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2378
2379 PERL_ARGS_ASSERT_GET_HV;
2380
6673a63c 2381 if (flags)
a0d0e21e
LW
2382 return GvHVn(gv);
2383 if (gv)
2384 return GvHV(gv);
5c284bb0 2385 return NULL;
a0d0e21e
LW
2386}
2387
954c1994 2388/*
ccfc67b7
JH
2389=head1 CV Manipulation Functions
2390
780a5241
NC
2391=for apidoc p||get_cvn_flags
2392
2393Returns the CV of the specified Perl subroutine. C<flags> are passed to
2394C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2395exist then it will be declared (which has the same effect as saying
2396C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2397then NULL is returned.
2398
954c1994
GS
2399=for apidoc p||get_cv
2400
780a5241 2401Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2402
2403=cut
2404*/
2405
a0d0e21e 2406CV*
780a5241 2407Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2408{
780a5241 2409 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2410 /* XXX this is probably not what they think they're getting.
2411 * It has the same effect as "sub name;", i.e. just a forward
2412 * declaration! */
7918f24d
NC
2413
2414 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2415
780a5241 2416 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2417 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2418 return newSUB(start_subparse(FALSE, 0),
780a5241 2419 newSVOP(OP_CONST, 0, sv),
5f66b61c 2420 NULL, NULL);
780a5241 2421 }
a0d0e21e 2422 if (gv)
8ebc5c01 2423 return GvCVu(gv);
601f1833 2424 return NULL;
a0d0e21e
LW
2425}
2426
2c67934f
NC
2427/* Nothing in core calls this now, but we can't replace it with a macro and
2428 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2429CV*
2430Perl_get_cv(pTHX_ const char *name, I32 flags)
2431{
7918f24d
NC
2432 PERL_ARGS_ASSERT_GET_CV;
2433
780a5241
NC
2434 return get_cvn_flags(name, strlen(name), flags);
2435}
2436
79072805
LW
2437/* Be sure to refetch the stack pointer after calling these routines. */
2438
954c1994 2439/*
ccfc67b7
JH
2440
2441=head1 Callback Functions
2442
954c1994
GS
2443=for apidoc p||call_argv
2444
2445Performs a callback to the specified Perl sub. See L<perlcall>.
2446
2447=cut
2448*/
2449
a0d0e21e 2450I32
8f42b153 2451Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2452
8ac85365
NIS
2453 /* See G_* flags in cop.h */
2454 /* null terminated arg list */
8990e307 2455{
97aff369 2456 dVAR;
a0d0e21e 2457 dSP;
8990e307 2458
7918f24d
NC
2459 PERL_ARGS_ASSERT_CALL_ARGV;
2460
924508f0 2461 PUSHMARK(SP);
a0d0e21e 2462 if (argv) {
8990e307 2463 while (*argv) {
6e449a3a 2464 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2465 argv++;
2466 }
a0d0e21e 2467 PUTBACK;
8990e307 2468 }
864dbfa3 2469 return call_pv(sub_name, flags);
8990e307
LW
2470}
2471
954c1994
GS
2472/*
2473=for apidoc p||call_pv
2474
2475Performs a callback to the specified Perl sub. See L<perlcall>.
2476
2477=cut
2478*/
2479
a0d0e21e 2480I32
864dbfa3 2481Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2482 /* name of the subroutine */
2483 /* See G_* flags in cop.h */
a0d0e21e 2484{
7918f24d
NC
2485 PERL_ARGS_ASSERT_CALL_PV;
2486
0da0e728 2487 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2488}
2489
954c1994
GS
2490/*
2491=for apidoc p||call_method
2492
2493Performs a callback to the specified Perl method. The blessed object must
2494be on the stack. See L<perlcall>.
2495
2496=cut
2497*/
2498
a0d0e21e 2499I32
864dbfa3 2500Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2501 /* name of the subroutine */
2502 /* See G_* flags in cop.h */
a0d0e21e 2503{
46ca9bac 2504 STRLEN len;
7918f24d
NC
2505 PERL_ARGS_ASSERT_CALL_METHOD;
2506
46ca9bac 2507 len = strlen(methname);
2508
2509 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2510 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2511}
2512
2513/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2514/*
2515=for apidoc p||call_sv
2516
2517Performs a callback to the Perl sub whose name is in the SV. See
2518L<perlcall>.
2519
2520=cut
2521*/
2522
a0d0e21e 2523I32
001d637e 2524Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2525 /* See G_* flags in cop.h */
a0d0e21e 2526{
27da23d5 2527 dVAR; dSP;
a0d0e21e 2528 LOGOP myop; /* fake syntax tree node */
968b3946 2529 UNOP method_op;
aa689395 2530 I32 oldmark;
8ea43dc8 2531 VOL I32 retval = 0;
a0d0e21e 2532 I32 oldscope;
54310121 2533 bool oldcatch = CATCH_GET;
6224f72b 2534 int ret;
c4420975 2535 OP* const oldop = PL_op;
db36c5a1 2536 dJMPENV;
1e422769 2537
7918f24d
NC
2538 PERL_ARGS_ASSERT_CALL_SV;
2539
a0d0e21e
LW
2540 if (flags & G_DISCARD) {
2541 ENTER;
2542 SAVETMPS;
2543 }
2f8edad0
NC
2544 if (!(flags & G_WANT)) {
2545 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2546 */
2547 flags |= G_SCALAR;
2548 }
a0d0e21e 2549
aa689395 2550 Zero(&myop, 1, LOGOP);
5f66b61c 2551 myop.op_next = NULL;
f51d4af5 2552 if (!(flags & G_NOARGS))
aa689395 2553 myop.op_flags |= OPf_STACKED;
4f911530 2554 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2555 SAVEOP();
533c011a 2556 PL_op = (OP*)&myop;
aa689395 2557
3280af22
NIS
2558 EXTEND(PL_stack_sp, 1);
2559 *++PL_stack_sp = sv;
aa689395 2560 oldmark = TOPMARK;
3280af22 2561 oldscope = PL_scopestack_ix;
a0d0e21e 2562
3280af22 2563 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2564 /* Handle first BEGIN of -d. */
3280af22 2565 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2566 /* Try harder, since this may have been a sighandler, thus
2567 * curstash may be meaningless. */
ea726b52 2568 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2569 && !(flags & G_NODEBUG))
533c011a 2570 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2571
968b3946
GS
2572 if (flags & G_METHOD) {
2573 Zero(&method_op, 1, UNOP);
2574 method_op.op_next = PL_op;
2575 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2576 method_op.op_type = OP_METHOD;
968b3946 2577 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2578 myop.op_type = OP_ENTERSUB;
f39d0b86 2579 PL_op = (OP*)&method_op;
968b3946
GS
2580 }
2581
312caa8e 2582 if (!(flags & G_EVAL)) {
0cdb2077 2583 CATCH_SET(TRUE);
d6f07c05 2584 CALL_BODY_SUB((OP*)&myop);
312caa8e 2585 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2586 CATCH_SET(oldcatch);
312caa8e
CS
2587 }
2588 else {
d78bda3d 2589 myop.op_other = (OP*)&myop;
3280af22 2590 PL_markstack_ptr--;
edb2152a 2591 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2592 PL_markstack_ptr++;
a0d0e21e 2593
14dd3ad8 2594 JMPENV_PUSH(ret);
edb2152a 2595
6224f72b
GS
2596 switch (ret) {
2597 case 0:
14dd3ad8 2598 redo_body:
d6f07c05 2599 CALL_BODY_SUB((OP*)&myop);
312caa8e 2600 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2601 if (!(flags & G_KEEPERR)) {
ab69dbc2 2602 CLEAR_ERRSV();
8433848b 2603 }
a0d0e21e 2604 break;
6224f72b 2605 case 1:
f86702cc 2606 STATUS_ALL_FAILURE;
a0d0e21e 2607 /* FALL THROUGH */
6224f72b 2608 case 2:
a0d0e21e 2609 /* my_exit() was called */
3280af22 2610 PL_curstash = PL_defstash;
a0d0e21e 2611 FREETMPS;
14dd3ad8 2612 JMPENV_POP;
f86702cc 2613 my_exit_jump();
a0d0e21e 2614 /* NOTREACHED */
6224f72b 2615 case 3:
3280af22 2616 if (PL_restartop) {
533c011a 2617 PL_op = PL_restartop;
3280af22 2618 PL_restartop = 0;
312caa8e 2619 goto redo_body;
a0d0e21e 2620 }
3280af22 2621 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2622 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2623 retval = 0;
2624 else {
2625 retval = 1;
3280af22 2626 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2627 }
312caa8e 2628 break;
a0d0e21e 2629 }
a0d0e21e 2630
edb2152a
NC
2631 if (PL_scopestack_ix > oldscope)
2632 delete_eval_scope();
14dd3ad8 2633 JMPENV_POP;
a0d0e21e 2634 }
1e422769 2635
a0d0e21e 2636 if (flags & G_DISCARD) {
3280af22 2637 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2638 retval = 0;
2639 FREETMPS;
2640 LEAVE;
2641 }
533c011a 2642 PL_op = oldop;
a0d0e21e
LW
2643 return retval;
2644}
2645
6e72f9df 2646/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2647
954c1994
GS
2648/*
2649=for apidoc p||eval_sv
2650
2651Tells Perl to C<eval> the string in the SV.
2652
2653=cut
2654*/
2655
a0d0e21e 2656I32
864dbfa3 2657Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2658
8ac85365 2659 /* See G_* flags in cop.h */
a0d0e21e 2660{
97aff369 2661 dVAR;
924508f0 2662 dSP;
a0d0e21e 2663 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2664 VOL I32 oldmark = SP - PL_stack_base;
2665 VOL I32 retval = 0;
6224f72b 2666 int ret;
c4420975 2667 OP* const oldop = PL_op;
db36c5a1 2668 dJMPENV;
84902520 2669
7918f24d
NC
2670 PERL_ARGS_ASSERT_EVAL_SV;
2671
4633a7c4
LW
2672 if (flags & G_DISCARD) {
2673 ENTER;
2674 SAVETMPS;
2675 }
2676
462e5cf6 2677 SAVEOP();
533c011a
NIS
2678 PL_op = (OP*)&myop;
2679 Zero(PL_op, 1, UNOP);
3280af22
NIS
2680 EXTEND(PL_stack_sp, 1);
2681 *++PL_stack_sp = sv;
79072805 2682
4633a7c4
LW
2683 if (!(flags & G_NOARGS))
2684 myop.op_flags = OPf_STACKED;
5f66b61c 2685 myop.op_next = NULL;
6e72f9df 2686 myop.op_type = OP_ENTEREVAL;
4f911530 2687 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2688 if (flags & G_KEEPERR)
2689 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2690
dedbcade
DM
2691 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2692 * before a PUSHEVAL, which corrupts the stack after a croak */
2693 TAINT_PROPER("eval_sv()");
2694
14dd3ad8 2695 JMPENV_PUSH(ret);
6224f72b
GS
2696 switch (ret) {
2697 case 0:
14dd3ad8 2698 redo_body:
d6f07c05 2699 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2700 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2701 if (!(flags & G_KEEPERR)) {
ab69dbc2 2702 CLEAR_ERRSV();
8433848b 2703 }
4633a7c4 2704 break;
6224f72b 2705 case 1:
f86702cc 2706 STATUS_ALL_FAILURE;
4633a7c4 2707 /* FALL THROUGH */
6224f72b 2708 case 2:
4633a7c4 2709 /* my_exit() was called */
3280af22 2710 PL_curstash = PL_defstash;
4633a7c4 2711 FREETMPS;
14dd3ad8 2712 JMPENV_POP;
f86702cc 2713 my_exit_jump();
4633a7c4 2714 /* NOTREACHED */
6224f72b 2715 case 3:
3280af22 2716 if (PL_restartop) {
533c011a 2717 PL_op = PL_restartop;
3280af22 2718 PL_restartop = 0;
312caa8e 2719 goto redo_body;
4633a7c4 2720 }
3280af22 2721 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2722 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2723 retval = 0;
2724 else {
2725 retval = 1;
3280af22 2726 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2727 }
312caa8e 2728 break;
4633a7c4
LW
2729 }
2730
14dd3ad8 2731 JMPENV_POP;
4633a7c4 2732 if (flags & G_DISCARD) {
3280af22 2733 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2734 retval = 0;
2735 FREETMPS;
2736 LEAVE;
2737 }
533c011a 2738 PL_op = oldop;
4633a7c4
LW
2739 return retval;
2740}
2741
954c1994
GS
2742/*
2743=for apidoc p||eval_pv
2744
2745Tells Perl to C<eval> the given string and return an SV* result.
2746
2747=cut
2748*/
2749
137443ea 2750SV*
864dbfa3 2751Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2752{
97aff369 2753 dVAR;
137443ea
PP
2754 dSP;
2755 SV* sv = newSVpv(p, 0);
2756
7918f24d
NC
2757 PERL_ARGS_ASSERT_EVAL_PV;
2758
864dbfa3 2759 eval_sv(sv, G_SCALAR);
137443ea
PP
2760 SvREFCNT_dec(sv);
2761
2762 SPAGAIN;
2763 sv = POPs;
2764 PUTBACK;
2765
2d8e6c8d 2766 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2767 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2768 }
137443ea
PP
2769
2770 return sv;
2771}
2772
4633a7c4
LW
2773/* Require a module. */
2774
954c1994 2775/*
ccfc67b7
JH
2776=head1 Embedding Functions
2777
954c1994
GS
2778=for apidoc p||require_pv
2779
7d3fb230
BS
2780Tells Perl to C<require> the file named by the string argument. It is
2781analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2782implemented that way; consider using load_module instead.
954c1994 2783
7d3fb230 2784=cut */
954c1994 2785
4633a7c4 2786void
864dbfa3 2787Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2788{
97aff369 2789 dVAR;
d3acc0f7 2790 dSP;
97aff369 2791 SV* sv;
7918f24d
NC
2792
2793 PERL_ARGS_ASSERT_REQUIRE_PV;
2794
e788e7d3 2795 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2796 PUTBACK;
be41e5d9
NC
2797 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2798 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2799 SPAGAIN;
2800 POPSTACK;
79072805
LW
2801}
2802
76e3520e 2803STATIC void
e1ec3a88 2804S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2805{
ab821d7f 2806 /* This message really ought to be max 23 lines.
75c72d73 2807 * Removed -h because the user already knows that option. Others? */
fb73857a 2808
27da23d5 2809 static const char * const usage_msg[] = {
aefc56c5 2810"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2811"-a autosplit mode with -n or -p (splits $_ into @F)",
2812"-C[number/list] enables the listed Unicode features",
2813"-c check syntax only (runs BEGIN and CHECK blocks)",
2814"-d[:debugger] run program under debugger",
2815"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2816"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2817"-E program like -e, but enables all optional features",
aefc56c5 2818"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2819"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2820"-i[extension] edit <> files in place (makes backup if extension supplied)",
2821"-Idirectory specify @INC/#include directory (several -I's allowed)",
2822"-l[octal] enable line ending processing, specifies line terminator",
2823"-[mM][-]module execute \"use/no module...\" before executing program",
2824"-n assume \"while (<>) { ... }\" loop around program",
2825"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2826"-s enable rudimentary parsing for switches after programfile",
2827"-S look for programfile using PATH environment variable",
2828"-t enable tainting warnings",
2829"-T enable tainting checks",
2830"-u dump core after parsing program",
2831"-U allow unsafe operations",
2832"-v print version, subversion (includes VERY IMPORTANT perl info)",
2833"-V[:variable] print configuration summary (or a single Config.pm variable)",
2834"-w enable many useful warnings (RECOMMENDED)",
2835"-W enable all warnings",
2836"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2837"-X disable all warnings",
fb73857a
PP
2838"\n",
2839NULL
2840};
27da23d5 2841 const char * const *p = usage_msg;
fb73857a 2842
7918f24d
NC
2843 PERL_ARGS_ASSERT_USAGE;
2844
b0e47665
GS
2845 PerlIO_printf(PerlIO_stdout(),
2846 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2847 name);
fb73857a 2848 while (*p)
b0e47665 2849 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2850}
2851
b4ab917c
DM
2852/* convert a string of -D options (or digits) into an int.
2853 * sets *s to point to the char after the options */
2854
2855#ifdef DEBUGGING
2856int
e1ec3a88 2857Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2858{
27da23d5 2859 static const char * const usage_msgd[] = {
e6e64d9b
JC
2860 " Debugging flag values: (see also -d)",
2861 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2862 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2863 " l Context (loop) stack processing",
2864 " t Trace execution",
2865 " o Method and overloading resolution",
2866 " c String/numeric conversions",
4c84d7f2 2867 " P Print profiling info, source file input state",
d7a2c63c 2868 " m Memory and SV allocation",
e6e64d9b
JC
2869 " f Format processing",
2870 " r Regular expression parsing and execution",
2871 " x Syntax tree dump",
3679267a 2872 " u Tainting checks",
e6e64d9b
JC
2873 " H Hash dump -- usurps values()",
2874 " X Scratchpad allocation",
2875 " D Cleaning up",
e6e64d9b
JC
2876 " T Tokenising",
2877 " R Include reference counts of dumped variables (eg when using -Ds)",
2878 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2879 " v Verbose: use in conjunction with other flags",
2880 " C Copy On Write",
2881 " A Consistency checks on internal structures",
3679267a 2882 " q quiet - currently only suppresses the 'EXECUTING' message",
d7c0d282 2883 " M trace smart match resolution",
cc8773c0 2884 " B dump suBroutine definitions, including special Blocks like BEGIN",
e6e64d9b
JC
2885 NULL
2886 };
b4ab917c 2887 int i = 0;
7918f24d
NC
2888
2889 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2890
b4ab917c
DM
2891 if (isALPHA(**s)) {
2892 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2893 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2894
2895 for (; isALNUM(**s); (*s)++) {
c4420975 2896 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2897 if (d)
2898 i |= 1 << (d - debopts);
2899 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2900 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2901 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2902 }
2903 }
e6e64d9b 2904 else if (isDIGIT(**s)) {
b4ab917c
DM
2905 i = atoi(*s);
2906 for (; isALNUM(**s); (*s)++) ;
2907 }
ddcf8bc1 2908 else if (givehelp) {
06e869a4 2909 const char *const *p = usage_msgd;
e6e64d9b
JC
2910 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2911 }
b4ab917c
DM
2912# ifdef EBCDIC
2913 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2914 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2915 "-Dp not implemented on this platform\n");
2916# endif
2917 return i;
2918}
2919#endif
2920
79072805
LW
2921/* This routine handles any switches that can be given during run */
2922
c7030b81
NC
2923const char *
2924Perl_moreswitches(pTHX_ const char *s)
79072805 2925{
27da23d5 2926 dVAR;
84c133a0 2927 UV rschar;
0544e6df 2928 const char option = *s; /* used to remember option in -m/-M code */
79072805 2929
7918f24d
NC
2930 PERL_ARGS_ASSERT_MORESWITCHES;
2931
79072805
LW
2932 switch (*s) {
2933 case '0':
a863c7d1 2934 {
f2095865 2935 I32 flags = 0;
a3b680e6 2936 STRLEN numlen;
f2095865
JH
2937
2938 SvREFCNT_dec(PL_rs);
2939 if (s[1] == 'x' && s[2]) {
a3b680e6 2940 const char *e = s+=2;
f2095865
JH
2941 U8 *tmps;
2942
a3b680e6
AL
2943 while (*e)
2944 e++;
f2095865
JH
2945 numlen = e - s;
2946 flags = PERL_SCAN_SILENT_ILLDIGIT;
2947 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2948 if (s + numlen < e) {
2949 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2950 numlen = 0;
2951 s--;
2952 }
396482e1 2953 PL_rs = newSVpvs("");
c5661c80 2954 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2955 tmps = (U8*)SvPVX(PL_rs);
2956 uvchr_to_utf8(tmps, rschar);
2957 SvCUR_set(PL_rs, UNISKIP(rschar));
2958 SvUTF8_on(PL_rs);
2959 }
2960 else {
2961 numlen = 4;
2962 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2963 if (rschar & ~((U8)~0))
2964 PL_rs = &PL_sv_undef;
2965 else if (!rschar && numlen >= 2)
396482e1 2966 PL_rs = newSVpvs("");
f2095865
JH
2967 else {
2968 char ch = (char)rschar;
2969 PL_rs = newSVpvn(&ch, 1);
2970 }
2971 }
64ace3f8 2972 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2973 return s + numlen;
a863c7d1 2974 }
46487f74 2975 case 'C':
a05d7ebb 2976 s++;
dd374669 2977 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2978 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2979 PL_utf8cache = -1;
46487f74 2980 return s;
2304df62 2981 case 'F':
3280af22 2982 PL_minus_F = TRUE;
ebce5377
RGS
2983 PL_splitstr = ++s;
2984 while (*s && !isSPACE(*s)) ++s;
e49e380e 2985 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 2986 return s;
79072805 2987 case 'a':
3280af22 2988 PL_minus_a = TRUE;
79072805
LW
2989 s++;
2990 return s;
2991 case 'c':
3280af22 2992 PL_minus_c = TRUE;
79072805
LW
2993 s++;
2994 return s;
2995 case 'd':
f20b2998 2996 forbid_setid('d', FALSE);
4633a7c4 2997 s++;
2cbb2ee1
RGS
2998
2999 /* -dt indicates to the debugger that threads will be used */
3000 if (*s == 't' && !isALNUM(s[1])) {
3001 ++s;
3002 my_setenv("PERL5DB_THREADED", "1");
3003 }
3004
70c94a19
RR
3005 /* The following permits -d:Mod to accepts arguments following an =
3006 in the fashion that -MSome::Mod does. */
3007 if (*s == ':' || *s == '=') {
f85893a1
NC
3008 const char *start = ++s;
3009 const char *const end = s + strlen(s);
396482e1 3010 SV * const sv = newSVpvs("use Devel::");
f85893a1 3011
70c94a19
RR
3012 /* We now allow -d:Module=Foo,Bar */
3013 while(isALNUM(*s) || *s==':') ++s;
3014 if (*s != '=')
f85893a1 3015 sv_catpvn(sv, start, end - start);
70c94a19
RR
3016 else {
3017 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3018 /* Don't use NUL as q// delimiter here, this string goes in the
3019 * environment. */
3020 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3021 }
f85893a1 3022 s = end;
184f32ec 3023 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3024 SvREFCNT_dec(sv);
4633a7c4 3025 }
ed094faf 3026 if (!PL_perldb) {
3280af22 3027 PL_perldb = PERLDB_ALL;
a0d0e21e 3028 init_debugger();
ed094faf 3029 }
79072805
LW
3030 return s;
3031 case 'D':
0453d815 3032 {
79072805 3033#ifdef DEBUGGING
f20b2998 3034 forbid_setid('D', FALSE);
b4ab917c 3035 s++;
dd374669 3036 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3037#else /* !DEBUGGING */
0453d815 3038 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3039 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3040 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3041 for (s++; isALNUM(*s); s++) ;
79072805 3042#endif
79072805 3043 return s;
0453d815 3044 }
4633a7c4 3045 case 'h':
ac27b0f5 3046 usage(PL_origargv[0]);
7ca617d0 3047 my_exit(0);
79072805 3048 case 'i':
43c5f42d 3049 Safefree(PL_inplace);
c030f24b
GH
3050#if defined(__CYGWIN__) /* do backup extension automagically */
3051 if (*(s+1) == '\0') {
c86a4f2e 3052 PL_inplace = savepvs(".bak");
c030f24b
GH
3053 return s+1;
3054 }
3055#endif /* __CYGWIN__ */
5ef5d758 3056 {
d4c19fe8 3057 const char * const start = ++s;
5ef5d758
NC
3058 while (*s && !isSPACE(*s))
3059 ++s;
3060
3061 PL_inplace = savepvn(start, s - start);
3062 }
7b8d334a 3063 if (*s) {
5ef5d758 3064 ++s;
7b8d334a 3065 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3066 s++;
7b8d334a 3067 }
fb73857a 3068 return s;
4e49a025 3069 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3070 forbid_setid('I', FALSE);
fb73857a
PP
3071 ++s;
3072 while (*s && isSPACE(*s))
3073 ++s;
3074 if (*s) {
c7030b81 3075 const char *e, *p;
0df16ed7
GS
3076 p = s;
3077 /* ignore trailing spaces (possibly followed by other switches) */
3078 do {
3079 for (e = p; *e && !isSPACE(*e); e++) ;
3080 p = e;
3081 while (isSPACE(*p))
3082 p++;
3083 } while (*p && *p != '-');
55b4bc1c 3084 incpush(s, e-s,
e28f3139 3085 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3086 s = p;
3087 if (*s == '-')
3088 s++;
79072805
LW
3089 }
3090 else
a67e862a 3091 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3092 return s;
79072805 3093 case 'l':
3280af22 3094 PL_minus_l = TRUE;
79072805 3095 s++;
7889fe52
NIS
3096 if (PL_ors_sv) {
3097 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3098 PL_ors_sv = NULL;
7889fe52 3099 }
79072805 3100 if (isDIGIT(*s)) {
53305cf1 3101 I32 flags = 0;
a3b680e6 3102 STRLEN numlen;
396482e1 3103 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3104 numlen = 3 + (*s == '0');
3105 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3106 s += numlen;
3107 }
3108 else {
8bfdd7d9 3109 if (RsPARA(PL_rs)) {
396482e1 3110 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3111 }
3112 else {
8bfdd7d9 3113 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3114 }
79072805
LW
3115 }
3116 return s;
1a30305b 3117 case 'M':
f20b2998 3118 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3119 /* FALL THROUGH */
3120 case 'm':
f20b2998 3121 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3122 if (*++s) {
c7030b81 3123 const char *start;
b64cb68c 3124 const char *end;
11343788 3125 SV *sv;
e1ec3a88 3126 const char *use = "use ";
0544e6df 3127 bool colon = FALSE;
a5f75d66 3128 /* -M-foo == 'no foo' */
d0043bd1
NC
3129 /* Leading space on " no " is deliberate, to make both
3130 possibilities the same length. */
3131 if (*s == '-') { use = " no "; ++s; }
3132 sv = newSVpvn(use,4);
a5f75d66 3133 start = s;
1a30305b 3134 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3135 while(isALNUM(*s) || *s==':') {
3136 if( *s++ == ':' ) {
3137 if( *s == ':' )
3138 s++;
3139 else
3140 colon = TRUE;
3141 }
3142 }
3143 if (s == start)
3144 Perl_croak(aTHX_ "Module name required with -%c option",
3145 option);
3146 if (colon)
3147 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3148 "contains single ':'",
63da6837 3149 (int)(s - start), start, option);
b64cb68c 3150 end = s + strlen(s);
c07a80fd 3151 if (*s != '=') {
b64cb68c 3152 sv_catpvn(sv, start, end - start);
0544e6df 3153 if (option == 'm') {
c07a80fd 3154 if (*s != '\0')
cea2e8a9 3155 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3156 sv_catpvs( sv, " ()");
c07a80fd
PP
3157 }
3158 } else {
11343788 3159 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3160 /* Use NUL as q''-delimiter. */
3161 sv_catpvs(sv, " split(/,/,q\0");
3162 ++s;
3163 sv_catpvn(sv, s, end - s);
396482e1 3164 sv_catpvs(sv, "\0)");
c07a80fd 3165 }
b64cb68c 3166 s = end;
29a861e7 3167 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3168 }
3169 else
0544e6df 3170 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3171 return s;
79072805 3172 case 'n':
3280af22 3173 PL_minus_n = TRUE;
79072805
LW
3174 s++;
3175 return s;
3176 case 'p':
3280af22 3177 PL_minus_p = TRUE;
79072805
LW
3178 s++;
3179 return s;
3180 case 's':
f20b2998 3181 forbid_setid('s', FALSE);
3280af22 3182 PL_doswitches = TRUE;
79072805
LW
3183 s++;
3184 return s;
6537fe72
MS
3185 case 't':
3186 if (!PL_tainting)
22f7c9c9 3187 TOO_LATE_FOR('t');
6537fe72
MS
3188 s++;
3189 return s;
463ee0b2 3190 case 'T':
3280af22 3191 if (!PL_tainting)
22f7c9c9 3192 TOO_LATE_FOR('T');
463ee0b2
LW
3193 s++;
3194 return s;
79072805 3195 case 'u':
3280af22 3196 PL_do_undump = TRUE;
79072805
LW
3197 s++;
3198 return s;
3199 case 'U':
3280af22 3200 PL_unsafe = TRUE;
79072805
LW
3201 s++;
3202 return s;
3203 case 'v':
d7aa5382 3204 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3205 upg_version(PL_patchlevel, TRUE);
8e9464f1 3206#if !defined(DGUX)
46807d8e
YO
3207 {
3208 SV* level= vstringify(PL_patchlevel);
3209#ifdef PERL_PATCHNUM
23d483e2
NC
3210# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3211 SV *num = newSVpvs(PERL_PATCHNUM "*");
3212# else
3213 SV *num = newSVpvs(PERL_PATCHNUM);
3214# endif
46807d8e
YO
3215
3216 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3217 SvREFCNT_dec(level);
3218 level= num;
3219 } else {
d0a9311f 3220 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3221 SvREFCNT_dec(num);
3222 }
3223 #endif
3224 PerlIO_printf(PerlIO_stdout(),
f1f66076 3225 "\nThis is perl, %"SVf
9f28b43c
NC
3226 " built for " ARCHNAME,
3227 level);
46807d8e
YO
3228 SvREFCNT_dec(level);
3229 }
8e9464f1
JH
3230#else /* DGUX */
3231/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3232 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3233 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3234 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3235 PerlIO_printf(PerlIO_stdout(),
3236 Perl_form(aTHX_ " built under %s at %s %s\n",
3237 OSNAME, __DATE__, __TIME__));
3238 PerlIO_printf(PerlIO_stdout(),
3239 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3240 OSVERS));
8e9464f1 3241#endif /* !DGUX */
fb73857a
PP
3242#if defined(LOCAL_PATCH_COUNT)
3243 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3244 PerlIO_printf(PerlIO_stdout(),
3245 "\n(with %d registered patch%s, "
3246 "see perl -V for more detail)",
bb7a0f54 3247 LOCAL_PATCH_COUNT,
b0e47665 3248 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3249#endif
1a30305b 3250
b0e47665 3251 PerlIO_printf(PerlIO_stdout(),
737f4459 3252 "\n\nCopyright 1987-2009, Larry Wall\n");
79072805 3253#ifdef MSDOS
b0e47665
GS
3254 PerlIO_printf(PerlIO_stdout(),
3255 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3256#endif
3257#ifdef DJGPP
b0e47665
GS
3258 PerlIO_printf(PerlIO_stdout(),
3259 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3260 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3261#endif
79072805 3262#ifdef OS2
b0e47665
GS
3263 PerlIO_printf(PerlIO_stdout(),
3264 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3265 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3266#endif
79072805 3267#ifdef atarist
b0e47665
GS
3268 PerlIO_printf(PerlIO_stdout(),
3269 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3270#endif
a3f9223b 3271#ifdef __BEOS__
b0e47665
GS
3272 PerlIO_printf(PerlIO_stdout(),
3273 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3274#endif
1d84e8df 3275#ifdef MPE
b0e47665 3276 PerlIO_printf(PerlIO_stdout(),
e583a879 3277 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3278#endif
9d116dd7 3279#ifdef OEMVS
b0e47665
GS
3280 PerlIO_printf(PerlIO_stdout(),
3281 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3282#endif
495c5fdc 3283#ifdef __VOS__
b0e47665 3284 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3285 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3286#endif
092bebab 3287#ifdef __OPEN_VM
b0e47665
GS
3288 PerlIO_printf(PerlIO_stdout(),
3289 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3290#endif
a1a0e61e 3291#ifdef POSIX_BC
b0e47665
GS
3292 PerlIO_printf(PerlIO_stdout(),
3293 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3294#endif
f83d2536 3295#ifdef EPOC
b0e47665 3296 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3297 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3298#endif
e1caacb4 3299#ifdef UNDER_CE
b475b3e6
JH
3300 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3301 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3302 wce_hitreturn();
3303#endif
a0fd4948 3304#ifdef __SYMBIAN32__
27da23d5
JH
3305 PerlIO_printf(PerlIO_stdout(),
3306 "Symbian port by Nokia, 2004-2005\n");
3307#endif
baed7233
DL
3308#ifdef BINARY_BUILD_NOTICE
3309 BINARY_BUILD_NOTICE;
3310#endif
b0e47665
GS
3311 PerlIO_printf(PerlIO_stdout(),
3312 "\n\
79072805 3313Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3314GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3315Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3316this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3317Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3318 my_exit(0);
79072805 3319 case 'w':
b2e5e6ba 3320 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3321 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3322 }
599cee73
PM
3323 s++;
3324 return s;
3325 case 'W':
ac27b0f5 3326 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3327 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3328 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3329 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3330 s++;
3331 return s;
3332 case 'X':
ac27b0f5 3333 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3334 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3335 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3336 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3337 s++;
3338 return s;
a0d0e21e 3339 case '*':
79072805 3340 case ' ':
d3133c89
NC
3341 while( *s == ' ' )
3342 ++s;
3343 if (s[0] == '-') /* Additional switches on #! line. */
3344 return s+1;
79072805 3345 break;
a0d0e21e 3346 case '-':
79072805 3347 case 0:
51882d45 3348#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3349 case '\r':
3350#endif
79072805
LW
3351 case '\n':
3352 case '\t':
3353 break;
aa689395
PP
3354#ifdef ALTERNATE_SHEBANG
3355 case 'S': /* OS/2 needs -S on "extproc" line. */
3356 break;
3357#endif
79072805 3358 default:
cea2e8a9 3359 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3360 }
bd61b366 3361 return NULL;
79072805
LW
3362}
3363
3364/* compliments of Tom Christiansen */
3365
3366/* unexec() can be found in the Gnu emacs distribution */
ee580363 3367/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3368
3369void
864dbfa3 3370Perl_my_unexec(pTHX)
79072805 3371{
b37c2d43 3372 PERL_UNUSED_CONTEXT;
79072805 3373#ifdef UNEXEC
b37c2d43
AL
3374 SV * prog = newSVpv(BIN_EXP, 0);
3375 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3376 int status = 1;
79072805
LW
3377 extern int etext;
3378
396482e1 3379 sv_catpvs(prog, "/perl");
396482e1 3380 sv_catpvs(file, ".perldump");
79072805 3381
ee580363
GS
3382 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3383 /* unexec prints msg to stderr in case of failure */
6ad3d225 3384 PerlProc_exit(status);
79072805 3385#else
a5f75d66
AD
3386# ifdef VMS
3387# include <lib$routines.h>
3388 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3389# elif defined(WIN32) || defined(__CYGWIN__)
3390 Perl_croak(aTHX_ "dump is not supported");
aa689395 3391# else
79072805 3392 ABORT(); /* for use with undump */
aa689395 3393# endif
a5f75d66 3394#endif
79072805
LW
3395}
3396
cb68f92d
GS
3397/* initialize curinterp */
3398STATIC void
cea2e8a9 3399S_init_interp(pTHX)
cb68f92d 3400{
97aff369 3401 dVAR;
acfe0abc
GS
3402#ifdef MULTIPLICITY
3403# define PERLVAR(var,type)
3404# define PERLVARA(var,n,type)
3405# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3406# define PERLVARI(var,type,init) aTHX->var = init;
3407# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3408# else
acfe0abc
GS
3409# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3410# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3411# endif
acfe0abc 3412# include "intrpvar.h"
acfe0abc
GS
3413# undef PERLVAR
3414# undef PERLVARA
3415# undef PERLVARI
3416# undef PERLVARIC
3417#else
3418# define PERLVAR(var,type)
3419# define PERLVARA(var,n,type)
3420# define PERLVARI(var,type,init) PL_##var = init;
3421# define PERLVARIC(var,type,init) PL_##var = init;
3422# include "intrpvar.h"
acfe0abc
GS
3423# undef PERLVAR
3424# undef PERLVARA
3425# undef PERLVARI
3426# undef PERLVARIC
cb68f92d
GS
3427#endif
3428
46ab3289
NC
3429 /* As these are inside a structure, PERLVARI isn't capable of initialising
3430 them */
6c3f0a89
NC
3431 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3432 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3433}
3434
76e3520e 3435STATIC void
cea2e8a9 3436S_init_main_stash(pTHX)
79072805 3437{
97aff369 3438 dVAR;
463ee0b2 3439 GV *gv;
6e72f9df 3440
3280af22 3441 PL_curstash = PL_defstash = newHV();
23579a14
NC
3442 /* We know that the string "main" will be in the global shared string
3443 table, so it's a small saving to use it rather than allocate another
3444 8 bytes. */
18916d0d 3445 PL_curstname = newSVpvs_share("main");
fafc274c 3446 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3447 /* If we hadn't caused another reference to "main" to be in the shared
3448 string table above, then it would be worth reordering these two,
3449 because otherwise all we do is delete "main" from it as a consequence
3450 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3451 SvREFCNT_dec(GvHV(gv));
23579a14 3452 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3453 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3454 SvREADONLY_on(gv);
fafc274c
NC
3455 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3456 SVt_PVAV)));
5a5094bd 3457 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3458 GvMULTI_on(PL_incgv);
fafc274c 3459 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3460 GvMULTI_on(PL_hintgv);
fafc274c 3461 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3462 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3463 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3464 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3465 GvMULTI_on(PL_errgv);
fafc274c 3466 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3467 GvMULTI_on(PL_replgv);
cea2e8a9 3468 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3469#ifdef PERL_DONT_CREATE_GVSV
3470 gv_SVadd(PL_errgv);
3471#endif
38a03e6e 3472 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3473 CLEAR_ERRSV();
3280af22 3474 PL_curstash = PL_defstash;
11faa288 3475 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC
3476 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3477 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3478 SVt_PVHV));
4633a7c4 3479 /* We must init $/ before switches are processed. */
64ace3f8 3480 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW
3481}
3482
fdf5d70d 3483STATIC int
2f352907 3484S_open_script(pTHX_ const char *scriptname, bool dosearch,
f20b2998 3485 bool *suidscript, PerlIO **rsfpp)
79072805 3486{
fdf5d70d 3487 int fdscript = -1;
27da23d5 3488 dVAR;
1b24ed4b 3489
7918f24d
NC
3490 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3491
3280af22 3492 if (PL_e_script) {
8afc33d6