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4b88f280 1#line 2 "perl.c"
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
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A
5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 by Larry Wall
6 * and others
a687059c 7 *
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8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
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11 */
12
a0d0e21e 13/*
4ac71550
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14 * A ship then new they built for him
15 * of mithril and of elven-glass
16 * --from Bilbo's song of Eärendil
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
378cc40b 27#include "EXTERN.h"
864dbfa3 28#define PERL_IN_PERL_C
378cc40b 29#include "perl.h"
e3321bb0 30#include "patchlevel.h" /* for local_patches */
4a5df386 31#include "XSUB.h"
378cc40b 32
011f1a1a
JH
33#ifdef NETWARE
34#include "nwutil.h"
011f1a1a
JH
35#endif
36
df5cef82 37/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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38#ifdef I_UNISTD
39#include <unistd.h>
40#endif
a0d0e21e 41
2aa47728
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42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
43# ifdef I_SYS_WAIT
44# include <sys/wait.h>
45# endif
bf357333
NC
46# ifdef I_SYSUIO
47# include <sys/uio.h>
48# endif
49
50union control_un {
51 struct cmsghdr cm;
52 char control[CMSG_SPACE(sizeof(int))];
53};
54
2aa47728
NC
55#endif
56
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57#ifdef __BEOS__
58# define HZ 1000000
59#endif
60
61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 76/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
77# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
78#else
ec2019ad 79/* Drop almost everything */
cc69b689 80# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 81#endif
8d063cd8 82
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AL
83#define CALL_BODY_SUB(myop) \
84 if (PL_op == (myop)) \
139d0ce6 85 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
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AL
86 if (PL_op) \
87 CALLRUNOPS(aTHX);
88
89#define CALL_LIST_BODY(cv) \
90 PUSHMARK(PL_stack_sp); \
ad64d0ec 91 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 92
e6827a76 93static void
daa7d858 94S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 95{
27da23d5 96 dVAR;
e6827a76
NC
97 if (!PL_curinterp) {
98 PERL_SET_INTERP(my_perl);
3db8f154 99#if defined(USE_ITHREADS)
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100 INIT_THREADS;
101 ALLOC_THREAD_KEY;
102 PERL_SET_THX(my_perl);
103 OP_REFCNT_INIT;
71ad1b0c 104 HINTS_REFCNT_INIT;
e6827a76 105 MUTEX_INIT(&PL_dollarzero_mutex);
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106 MUTEX_INIT(&PL_my_ctx_mutex);
107# endif
e6827a76 108 }
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NC
109#if defined(USE_ITHREADS)
110 else
111#else
112 /* This always happens for non-ithreads */
113#endif
114 {
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NC
115 PERL_SET_THX(my_perl);
116 }
117}
06d86050 118
cbec8ebe
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119
120/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
121
122void
123Perl_sys_init(int* argc, char*** argv)
124{
4fc0badb 125 dVAR;
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126
127 PERL_ARGS_ASSERT_SYS_INIT;
128
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129 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
130 PERL_UNUSED_ARG(argv);
131 PERL_SYS_INIT_BODY(argc, argv);
132}
133
134void
135Perl_sys_init3(int* argc, char*** argv, char*** env)
136{
4fc0badb 137 dVAR;
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138
139 PERL_ARGS_ASSERT_SYS_INIT3;
140
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141 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
142 PERL_UNUSED_ARG(argv);
143 PERL_UNUSED_ARG(env);
144 PERL_SYS_INIT3_BODY(argc, argv, env);
145}
146
147void
d0820ef1 148Perl_sys_term()
cbec8ebe 149{
4fc0badb 150 dVAR;
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DM
151 if (!PL_veto_cleanup) {
152 PERL_SYS_TERM_BODY();
153 }
cbec8ebe
DM
154}
155
156
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157#ifdef PERL_IMPLICIT_SYS
158PerlInterpreter *
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159perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
160 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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161 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
162 struct IPerlDir* ipD, struct IPerlSock* ipS,
163 struct IPerlProc* ipP)
164{
165 PerlInterpreter *my_perl;
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166
167 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
168
9f653bb5 169 /* Newx() needs interpreter, so call malloc() instead */
32e30700 170 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 171 S_init_tls_and_interp(my_perl);
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172 Zero(my_perl, 1, PerlInterpreter);
173 PL_Mem = ipM;
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174 PL_MemShared = ipMS;
175 PL_MemParse = ipMP;
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176 PL_Env = ipE;
177 PL_StdIO = ipStd;
178 PL_LIO = ipLIO;
179 PL_Dir = ipD;
180 PL_Sock = ipS;
181 PL_Proc = ipP;
7cb608b5 182 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 183
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184 return my_perl;
185}
186#else
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187
188/*
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189=head1 Embedding Functions
190
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191=for apidoc perl_alloc
192
193Allocates a new Perl interpreter. See L<perlembed>.
194
195=cut
196*/
197
93a17b20 198PerlInterpreter *
cea2e8a9 199perl_alloc(void)
79072805 200{
cea2e8a9 201 PerlInterpreter *my_perl;
79072805 202
9f653bb5 203 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 204 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 205
e6827a76 206 S_init_tls_and_interp(my_perl);
7cb608b5 207#ifndef PERL_TRACK_MEMPOOL
07409e01 208 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
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NC
209#else
210 Zero(my_perl, 1, PerlInterpreter);
211 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
212 return my_perl;
213#endif
79072805 214}
32e30700 215#endif /* PERL_IMPLICIT_SYS */
79072805 216
954c1994
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217/*
218=for apidoc perl_construct
219
220Initializes a new Perl interpreter. See L<perlembed>.
221
222=cut
223*/
224
79072805 225void
0cb96387 226perl_construct(pTHXx)
79072805 227{
27da23d5 228 dVAR;
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229
230 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
231
8990e307 232#ifdef MULTIPLICITY
54aff467 233 init_interp();
ac27b0f5 234 PL_perl_destruct_level = 1;
54aff467 235#else
7918f24d 236 PERL_UNUSED_ARG(my_perl);
54aff467
GS
237 if (PL_perl_destruct_level > 0)
238 init_interp();
239#endif
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DM
240 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
241
34caed6d
DM
242 /* set read-only and try to insure than we wont see REFCNT==0
243 very often */
244
245 SvREADONLY_on(&PL_sv_undef);
246 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
247
248 sv_setpv(&PL_sv_no,PL_No);
249 /* value lookup in void context - happens to have the side effect
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NC
250 of caching the numeric forms. However, as &PL_sv_no doesn't contain
251 a string that is a valid numer, we have to turn the public flags by
252 hand: */
34caed6d 253 SvNV(&PL_sv_no);
c1939273 254 SvIV(&PL_sv_no);
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255 SvIOK_on(&PL_sv_no);
256 SvNOK_on(&PL_sv_no);
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DM
257 SvREADONLY_on(&PL_sv_no);
258 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
259
260 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 261 SvNV(&PL_sv_yes);
c1939273 262 SvIV(&PL_sv_yes);
34caed6d
DM
263 SvREADONLY_on(&PL_sv_yes);
264 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
265
266 SvREADONLY_on(&PL_sv_placeholder);
267 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
268
269 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 270#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 271 PL_pidstatus = newHV();
ca0c25f6 272#endif
79072805 273
396482e1 274 PL_rs = newSVpvs("\n");
dc92893f 275
cea2e8a9 276 init_stacks();
79072805 277
748a9306 278 init_ids();
a5f75d66 279
312caa8e 280 JMPENV_BOOTSTRAP;
f86702cc
PP
281 STATUS_ALL_SUCCESS;
282
0672f40e 283 init_i18nl10n(1);
36477c24 284 SET_NUMERIC_STANDARD();
0b5b802d 285
ab821d7f 286#if defined(LOCAL_PATCH_COUNT)
3280af22 287 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
288#endif
289
52853b95
GS
290#ifdef HAVE_INTERP_INTERN
291 sys_intern_init();
292#endif
293
3a1ee7e8 294 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 295
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NIS
296 PL_fdpid = newAV(); /* for remembering popen pids by fd */
297 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 298 PL_errors = newSVpvs("");
76f68e9b
MHM
299 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
300 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
301 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 302#ifdef USE_ITHREADS
402d2eb1
NC
303 /* First entry is a list of empty elements. It needs to be initialised
304 else all hell breaks loose in S_find_uninit_var(). */
305 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 306 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 307#endif
e5dd39fc 308#ifdef USE_REENTRANT_API
59bd0823 309 Perl_reentrant_init(aTHX);
e5dd39fc 310#endif
3d47000e
AB
311
312 /* Note that strtab is a rather special HV. Assumptions are made
313 about not iterating on it, and not adding tie magic to it.
314 It is properly deallocated in perl_destruct() */
315 PL_strtab = newHV();
316
3d47000e
AB
317 HvSHAREKEYS_off(PL_strtab); /* mandatory */
318 hv_ksplit(PL_strtab, 512);
319
0631ea03
AB
320#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
321 _dyld_lookup_and_bind
322 ("__environ", (unsigned long *) &environ_pointer, NULL);
323#endif /* environ */
324
2f42fcb0
JH
325#ifndef PERL_MICRO
326# ifdef USE_ENVIRON_ARRAY
0631ea03 327 PL_origenviron = environ;
2f42fcb0 328# endif
0631ea03
AB
329#endif
330
5311654c 331 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 332 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
333 * BeOS has those, but returns the wrong value.
334 * The HZ if not originally defined has been by now
335 * been defined as CLK_TCK, if available. */
dbc1d986 336#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
337 PL_clocktick = sysconf(_SC_CLK_TCK);
338 if (PL_clocktick <= 0)
339#endif
340 PL_clocktick = HZ;
341
081fc587
AB
342 PL_stashcache = newHV();
343
e8e3635e 344 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 345 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 346
27da23d5
JH
347#ifdef HAS_MMAP
348 if (!PL_mmap_page_size) {
349#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
350 {
351 SETERRNO(0, SS_NORMAL);
352# ifdef _SC_PAGESIZE
353 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
354# else
355 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
356# endif
357 if ((long) PL_mmap_page_size < 0) {
358 if (errno) {
44f8325f 359 SV * const error = ERRSV;
d4c19fe8 360 SvUPGRADE(error, SVt_PV);
0510663f 361 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
362 }
363 else
364 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
365 }
366 }
367#else
368# ifdef HAS_GETPAGESIZE
369 PL_mmap_page_size = getpagesize();
370# else
371# if defined(I_SYS_PARAM) && defined(PAGESIZE)
372 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
373# endif
374# endif
375#endif
376 if (PL_mmap_page_size <= 0)
377 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
378 (IV) PL_mmap_page_size);
379 }
380#endif /* HAS_MMAP */
381
382#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
383 PL_timesbase.tms_utime = 0;
384 PL_timesbase.tms_stime = 0;
385 PL_timesbase.tms_cutime = 0;
386 PL_timesbase.tms_cstime = 0;
387#endif
388
7d113631
NC
389 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
390
a3e6e81e 391 PL_registered_mros = newHV();
9e169432
NC
392 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
393 HvMAX(PL_registered_mros) = 0;
a3e6e81e 394
8990e307 395 ENTER;
79072805
LW
396}
397
954c1994 398/*
62375a60
NIS
399=for apidoc nothreadhook
400
401Stub that provides thread hook for perl_destruct when there are
402no threads.
403
404=cut
405*/
406
407int
4e9e3734 408Perl_nothreadhook(pTHX)
62375a60 409{
96a5add6 410 PERL_UNUSED_CONTEXT;
62375a60
NIS
411 return 0;
412}
413
41e4abd8
NC
414#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
415void
416Perl_dump_sv_child(pTHX_ SV *sv)
417{
418 ssize_t got;
bf357333
NC
419 const int sock = PL_dumper_fd;
420 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
421 union control_un control;
422 struct msghdr msg;
808ad2d0 423 struct iovec vec[2];
bf357333 424 struct cmsghdr *cmptr;
808ad2d0
NC
425 int returned_errno;
426 unsigned char buffer[256];
41e4abd8 427
7918f24d
NC
428 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
429
bf357333 430 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
431 return;
432
433 PerlIO_flush(Perl_debug_log);
434
bf357333
NC
435 /* All these shenanigans are to pass a file descriptor over to our child for
436 it to dump out to. We can't let it hold open the file descriptor when it
437 forks, as the file descriptor it will dump to can turn out to be one end
438 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 439 be open, the wait would be forever.) */
bf357333
NC
440
441 msg.msg_control = control.control;
442 msg.msg_controllen = sizeof(control.control);
443 /* We're a connected socket so we don't need a destination */
444 msg.msg_name = NULL;
445 msg.msg_namelen = 0;
446 msg.msg_iov = vec;
808ad2d0 447 msg.msg_iovlen = 1;
bf357333
NC
448
449 cmptr = CMSG_FIRSTHDR(&msg);
450 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
451 cmptr->cmsg_level = SOL_SOCKET;
452 cmptr->cmsg_type = SCM_RIGHTS;
453 *((int *)CMSG_DATA(cmptr)) = 1;
454
455 vec[0].iov_base = (void*)&sv;
456 vec[0].iov_len = sizeof(sv);
457 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
458
459 if(got < 0) {
bf357333 460 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
461 abort();
462 }
bf357333
NC
463 if(got < sizeof(sv)) {
464 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
465 abort();
466 }
467
808ad2d0
NC
468 /* Return protocol is
469 int: errno value
470 unsigned char: length of location string (0 for empty)
471 unsigned char*: string (not terminated)
472 */
473 vec[0].iov_base = (void*)&returned_errno;
474 vec[0].iov_len = sizeof(returned_errno);
475 vec[1].iov_base = buffer;
476 vec[1].iov_len = 1;
477
478 got = readv(sock, vec, 2);
41e4abd8
NC
479
480 if(got < 0) {
481 perror("Debug leaking scalars parent read failed");
808ad2d0 482 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
483 abort();
484 }
808ad2d0 485 if(got < sizeof(returned_errno) + 1) {
41e4abd8 486 perror("Debug leaking scalars parent short read");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
490
808ad2d0
NC
491 if (*buffer) {
492 got = read(sock, buffer + 1, *buffer);
493 if(got < 0) {
494 perror("Debug leaking scalars parent read 2 failed");
495 PerlIO_flush(PerlIO_stderr());
496 abort();
497 }
498
499 if(got < *buffer) {
500 perror("Debug leaking scalars parent short read 2");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504 }
505
506 if (returned_errno || *buffer) {
507 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
508 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
509 returned_errno, strerror(returned_errno));
41e4abd8
NC
510 }
511}
512#endif
513
62375a60 514/*
954c1994
GS
515=for apidoc perl_destruct
516
517Shuts down a Perl interpreter. See L<perlembed>.
518
519=cut
520*/
521
31d77e54 522int
0cb96387 523perl_destruct(pTHXx)
79072805 524{
27da23d5 525 dVAR;
be2ea8ed 526 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 527 HV *hv;
2aa47728 528#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
529 pid_t child;
530#endif
8990e307 531
7918f24d
NC
532 PERL_ARGS_ASSERT_PERL_DESTRUCT;
533#ifndef MULTIPLICITY
ed6c66dd 534 PERL_UNUSED_ARG(my_perl);
7918f24d 535#endif
9d4ba2ae 536
3d22c4f0
GG
537 assert(PL_scopestack_ix == 1);
538
7766f137
GS
539 /* wait for all pseudo-forked children to finish */
540 PERL_WAIT_FOR_CHILDREN;
541
3280af22 542 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
543#ifdef DEBUGGING
544 {
9d4ba2ae
AL
545 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
546 if (s) {
e1ec3a88 547 const int i = atoi(s);
5f05dabc
PP
548 if (destruct_level < i)
549 destruct_level = i;
550 }
4633a7c4
LW
551 }
552#endif
553
27da23d5 554 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
555 dJMPENV;
556 int x = 0;
557
558 JMPENV_PUSH(x);
1b6737cc 559 PERL_UNUSED_VAR(x);
f3faeb53
AB
560 if (PL_endav && !PL_minus_c)
561 call_list(PL_scopestack_ix, PL_endav);
562 JMPENV_POP;
26f423df 563 }
f3faeb53 564 LEAVE;
a0d0e21e 565 FREETMPS;
3d22c4f0 566 assert(PL_scopestack_ix == 0);
a0d0e21e 567
e00b64d4 568 /* Need to flush since END blocks can produce output */
f13a2bc0 569 my_fflush_all();
e00b64d4 570
16c91539 571 if (PL_threadhook(aTHX)) {
62375a60 572 /* Threads hook has vetoed further cleanup */
c301d606 573 PL_veto_cleanup = TRUE;
37038d91 574 return STATUS_EXIT;
62375a60
NIS
575 }
576
2aa47728
NC
577#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
578 if (destruct_level != 0) {
579 /* Fork here to create a child. Our child's job is to preserve the
580 state of scalars prior to destruction, so that we can instruct it
581 to dump any scalars that we later find have leaked.
582 There's no subtlety in this code - it assumes POSIX, and it doesn't
583 fail gracefully */
584 int fd[2];
585
586 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
587 perror("Debug leaking scalars socketpair failed");
588 abort();
589 }
590
591 child = fork();
592 if(child == -1) {
593 perror("Debug leaking scalars fork failed");
594 abort();
595 }
596 if (!child) {
597 /* We are the child */
3125a5a4
NC
598 const int sock = fd[1];
599 const int debug_fd = PerlIO_fileno(Perl_debug_log);
600 int f;
808ad2d0
NC
601 const char *where;
602 /* Our success message is an integer 0, and a char 0 */
b61433a9 603 static const char success[sizeof(int) + 1] = {0};
3125a5a4 604
2aa47728 605 close(fd[0]);
2aa47728 606
3125a5a4
NC
607 /* We need to close all other file descriptors otherwise we end up
608 with interesting hangs, where the parent closes its end of a
609 pipe, and sits waiting for (another) child to terminate. Only
610 that child never terminates, because it never gets EOF, because
bf357333
NC
611 we also have the far end of the pipe open. We even need to
612 close the debugging fd, because sometimes it happens to be one
613 end of a pipe, and a process is waiting on the other end for
614 EOF. Normally it would be closed at some point earlier in
615 destruction, but if we happen to cause the pipe to remain open,
616 EOF never occurs, and we get an infinite hang. Hence all the
617 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
618
619 f = sysconf(_SC_OPEN_MAX);
620 if(f < 0) {
808ad2d0
NC
621 where = "sysconf failed";
622 goto abort;
3125a5a4
NC
623 }
624 while (f--) {
625 if (f == sock)
626 continue;
3125a5a4
NC
627 close(f);
628 }
629
2aa47728
NC
630 while (1) {
631 SV *target;
bf357333
NC
632 union control_un control;
633 struct msghdr msg;
634 struct iovec vec[1];
635 struct cmsghdr *cmptr;
636 ssize_t got;
637 int got_fd;
638
639 msg.msg_control = control.control;
640 msg.msg_controllen = sizeof(control.control);
641 /* We're a connected socket so we don't need a source */
642 msg.msg_name = NULL;
643 msg.msg_namelen = 0;
644 msg.msg_iov = vec;
645 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
646
647 vec[0].iov_base = (void*)&target;
648 vec[0].iov_len = sizeof(target);
649
650 got = recvmsg(sock, &msg, 0);
2aa47728
NC
651
652 if(got == 0)
653 break;
654 if(got < 0) {
808ad2d0
NC
655 where = "recv failed";
656 goto abort;
2aa47728
NC
657 }
658 if(got < sizeof(target)) {
808ad2d0
NC
659 where = "short recv";
660 goto abort;
2aa47728 661 }
bf357333 662
808ad2d0
NC
663 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
664 where = "no cmsg";
665 goto abort;
666 }
667 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
668 where = "wrong cmsg_len";
669 goto abort;
670 }
671 if(cmptr->cmsg_level != SOL_SOCKET) {
672 where = "wrong cmsg_level";
673 goto abort;
674 }
675 if(cmptr->cmsg_type != SCM_RIGHTS) {
676 where = "wrong cmsg_type";
677 goto abort;
678 }
bf357333
NC
679
680 got_fd = *(int*)CMSG_DATA(cmptr);
681 /* For our last little bit of trickery, put the file descriptor
682 back into Perl_debug_log, as if we never actually closed it
683 */
808ad2d0
NC
684 if(got_fd != debug_fd) {
685 if (dup2(got_fd, debug_fd) == -1) {
686 where = "dup2";
687 goto abort;
688 }
689 }
2aa47728 690 sv_dump(target);
bf357333 691
2aa47728
NC
692 PerlIO_flush(Perl_debug_log);
693
808ad2d0 694 got = write(sock, &success, sizeof(success));
2aa47728
NC
695
696 if(got < 0) {
808ad2d0
NC
697 where = "write failed";
698 goto abort;
2aa47728 699 }
808ad2d0
NC
700 if(got < sizeof(success)) {
701 where = "short write";
702 goto abort;
2aa47728
NC
703 }
704 }
705 _exit(0);
808ad2d0
NC
706 abort:
707 {
708 int send_errno = errno;
709 unsigned char length = (unsigned char) strlen(where);
710 struct iovec failure[3] = {
711 {(void*)&send_errno, sizeof(send_errno)},
712 {&length, 1},
713 {(void*)where, length}
714 };
715 int got = writev(sock, failure, 3);
716 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
717 in the parent if we try to read from the socketpair after the
718 child has exited, even if there was data to read.
719 So sleep a bit to give the parent a fighting chance of
720 reading the data. */
721 sleep(2);
722 _exit((got == -1) ? errno : 0);
723 }
bf357333 724 /* End of child. */
2aa47728 725 }
41e4abd8 726 PL_dumper_fd = fd[0];
2aa47728
NC
727 close(fd[1]);
728 }
729#endif
730
ff0cee69
PP
731 /* We must account for everything. */
732
733 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
734 /* Do this now, because destroying ops can cause new SVs to be generated
735 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
736 PL_curcop to point to a valid op from which the filename structure
737 member is copied. */
738 PL_curcop = &PL_compiling;
3280af22 739 if (PL_main_root) {
4e380990
DM
740 /* ensure comppad/curpad to refer to main's pad */
741 if (CvPADLIST(PL_main_cv)) {
742 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
743 }
3280af22 744 op_free(PL_main_root);
5f66b61c 745 PL_main_root = NULL;
a0d0e21e 746 }
5f66b61c 747 PL_main_start = NULL;
aac9d523
DM
748 /* note that PL_main_cv isn't usually actually freed at this point,
749 * due to the CvOUTSIDE refs from subs compiled within it. It will
750 * get freed once all the subs are freed in sv_clean_all(), for
751 * destruct_level > 0 */
3280af22 752 SvREFCNT_dec(PL_main_cv);
601f1833 753 PL_main_cv = NULL;
24d3c518 754 PL_dirty = TRUE;
ff0cee69 755
13621cfb
NIS
756 /* Tell PerlIO we are about to tear things apart in case
757 we have layers which are using resources that should
758 be cleaned up now.
759 */
760
761 PerlIO_destruct(aTHX);
762
3280af22 763 if (PL_sv_objcount) {
a0d0e21e
LW
764 /*
765 * Try to destruct global references. We do this first so that the
766 * destructors and destructees still exist. Some sv's might remain.
767 * Non-referenced objects are on their own.
768 */
a0d0e21e 769 sv_clean_objs();
bf9cdc68 770 PL_sv_objcount = 0;
8990e307
LW
771 }
772
5cd24f17 773 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 774 SvREFCNT_dec(PL_warnhook);
a0714e2c 775 PL_warnhook = NULL;
3280af22 776 SvREFCNT_dec(PL_diehook);
a0714e2c 777 PL_diehook = NULL;
5cd24f17 778
4b556e6c 779 /* call exit list functions */
3280af22 780 while (PL_exitlistlen-- > 0)
acfe0abc 781 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 782
3280af22 783 Safefree(PL_exitlist);
4b556e6c 784
1c4916e5
CB
785 PL_exitlist = NULL;
786 PL_exitlistlen = 0;
787
a3e6e81e
NC
788 SvREFCNT_dec(PL_registered_mros);
789
551a8b83 790 /* jettison our possibly duplicated environment */
4b647fb0
DM
791 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
792 * so we certainly shouldn't free it here
793 */
2f42fcb0 794#ifndef PERL_MICRO
4b647fb0 795#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 796 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
797#ifdef USE_ITHREADS
798 /* only main thread can free environ[0] contents */
799 && PL_curinterp == aTHX
800#endif
801 )
802 {
551a8b83
JH
803 I32 i;
804
805 for (i = 0; environ[i]; i++)
4b420006 806 safesysfree(environ[i]);
0631ea03 807
4b420006
JH
808 /* Must use safesysfree() when working with environ. */
809 safesysfree(environ);
551a8b83
JH
810
811 environ = PL_origenviron;
812 }
813#endif
2f42fcb0 814#endif /* !PERL_MICRO */
551a8b83 815
30985c42
JH
816 if (destruct_level == 0) {
817
818 DEBUG_P(debprofdump());
819
820#if defined(PERLIO_LAYERS)
821 /* No more IO - including error messages ! */
822 PerlIO_cleanup(aTHX);
823#endif
824
825 CopFILE_free(&PL_compiling);
826 CopSTASH_free(&PL_compiling);
827
828 /* The exit() function will do everything that needs doing. */
829 return STATUS_EXIT;
830 }
831
5f8cb046
DM
832#ifdef USE_ITHREADS
833 /* the syntax tree is shared between clones
834 * so op_free(PL_main_root) only ReREFCNT_dec's
835 * REGEXPs in the parent interpreter
836 * we need to manually ReREFCNT_dec for the clones
837 */
5f8cb046 838 SvREFCNT_dec(PL_regex_padav);
7d49f689 839 PL_regex_padav = NULL;
5f8cb046
DM
840 PL_regex_pad = NULL;
841#endif
842
ad64d0ec 843 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
844 PL_stashcache = NULL;
845
5f05dabc
PP
846 /* loosen bonds of global variables */
847
2f9285f8
DM
848 /* XXX can PL_parser still be non-null here? */
849 if(PL_parser && PL_parser->rsfp) {
850 (void)PerlIO_close(PL_parser->rsfp);
851 PL_parser->rsfp = NULL;
8ebc5c01
PP
852 }
853
84386e14
RGS
854 if (PL_minus_F) {
855 Safefree(PL_splitstr);
856 PL_splitstr = NULL;
857 }
858
8ebc5c01 859 /* switches */
3280af22
NIS
860 PL_minus_n = FALSE;
861 PL_minus_p = FALSE;
862 PL_minus_l = FALSE;
863 PL_minus_a = FALSE;
864 PL_minus_F = FALSE;
865 PL_doswitches = FALSE;
599cee73 866 PL_dowarn = G_WARN_OFF;
3280af22
NIS
867 PL_doextract = FALSE;
868 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
869 PL_unsafe = FALSE;
870
871 Safefree(PL_inplace);
bd61b366 872 PL_inplace = NULL;
a7cb1f99 873 SvREFCNT_dec(PL_patchlevel);
1e8125c6 874 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
875
876 if (PL_e_script) {
877 SvREFCNT_dec(PL_e_script);
a0714e2c 878 PL_e_script = NULL;
8ebc5c01
PP
879 }
880
bf9cdc68
RG
881 PL_perldb = 0;
882
8ebc5c01
PP
883 /* magical thingies */
884
e23d9e2f
CS
885 SvREFCNT_dec(PL_ofsgv); /* *, */
886 PL_ofsgv = NULL;
5f05dabc 887
7889fe52 888 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 889 PL_ors_sv = NULL;
8ebc5c01 890
3280af22 891 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 892 PL_rs = NULL;
dc92893f 893
d33b2eba 894 Safefree(PL_osname); /* $^O */
bd61b366 895 PL_osname = NULL;
5f05dabc 896
3280af22 897 SvREFCNT_dec(PL_statname);
a0714e2c
SS
898 PL_statname = NULL;
899 PL_statgv = NULL;
5f05dabc 900
8ebc5c01
PP
901 /* defgv, aka *_ should be taken care of elsewhere */
902
8ebc5c01 903 /* clean up after study() */
3280af22 904 SvREFCNT_dec(PL_lastscream);
a0714e2c 905 PL_lastscream = NULL;
3280af22
NIS
906 Safefree(PL_screamfirst);
907 PL_screamfirst = 0;
908 Safefree(PL_screamnext);
909 PL_screamnext = 0;
8ebc5c01 910
7d5ea4e7
GS
911 /* float buffer */
912 Safefree(PL_efloatbuf);
bd61b366 913 PL_efloatbuf = NULL;
7d5ea4e7
GS
914 PL_efloatsize = 0;
915
8ebc5c01 916 /* startup and shutdown function lists */
3280af22 917 SvREFCNT_dec(PL_beginav);
5a837c8f 918 SvREFCNT_dec(PL_beginav_save);
3280af22 919 SvREFCNT_dec(PL_endav);
7d30b5c4 920 SvREFCNT_dec(PL_checkav);
ece599bd 921 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
922 SvREFCNT_dec(PL_unitcheckav);
923 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 924 SvREFCNT_dec(PL_initav);
7d49f689
NC
925 PL_beginav = NULL;
926 PL_beginav_save = NULL;
927 PL_endav = NULL;
928 PL_checkav = NULL;
929 PL_checkav_save = NULL;
3c10abe3
AG
930 PL_unitcheckav = NULL;
931 PL_unitcheckav_save = NULL;
7d49f689 932 PL_initav = NULL;
5618dfe8 933
8ebc5c01 934 /* shortcuts just get cleared */
a0714e2c
SS
935 PL_envgv = NULL;
936 PL_incgv = NULL;
937 PL_hintgv = NULL;
938 PL_errgv = NULL;
939 PL_argvgv = NULL;
940 PL_argvoutgv = NULL;
941 PL_stdingv = NULL;
942 PL_stderrgv = NULL;
943 PL_last_in_gv = NULL;
944 PL_replgv = NULL;
945 PL_DBgv = NULL;
946 PL_DBline = NULL;
947 PL_DBsub = NULL;
948 PL_DBsingle = NULL;
949 PL_DBtrace = NULL;
950 PL_DBsignal = NULL;
601f1833 951 PL_DBcv = NULL;
7d49f689 952 PL_dbargs = NULL;
5c284bb0 953 PL_debstash = NULL;
8ebc5c01 954
7a1c5554 955 SvREFCNT_dec(PL_argvout_stack);
7d49f689 956 PL_argvout_stack = NULL;
8ebc5c01 957
5c831c24 958 SvREFCNT_dec(PL_modglobal);
5c284bb0 959 PL_modglobal = NULL;
5c831c24 960 SvREFCNT_dec(PL_preambleav);
7d49f689 961 PL_preambleav = NULL;
5c831c24 962 SvREFCNT_dec(PL_subname);
a0714e2c 963 PL_subname = NULL;
ca0c25f6 964#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 965 SvREFCNT_dec(PL_pidstatus);
5c284bb0 966 PL_pidstatus = NULL;
ca0c25f6 967#endif
5c831c24 968 SvREFCNT_dec(PL_toptarget);
a0714e2c 969 PL_toptarget = NULL;
5c831c24 970 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
971 PL_bodytarget = NULL;
972 PL_formtarget = NULL;
5c831c24 973
d33b2eba 974 /* free locale stuff */
b9582b6a 975#ifdef USE_LOCALE_COLLATE
d33b2eba 976 Safefree(PL_collation_name);
bd61b366 977 PL_collation_name = NULL;
b9582b6a 978#endif
d33b2eba 979
b9582b6a 980#ifdef USE_LOCALE_NUMERIC
d33b2eba 981 Safefree(PL_numeric_name);
bd61b366 982 PL_numeric_name = NULL;
a453c169 983 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 984 PL_numeric_radix_sv = NULL;
b9582b6a 985#endif
d33b2eba 986
5c831c24
GS
987 /* clear utf8 character classes */
988 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
989 SvREFCNT_dec(PL_utf8_ascii);
990 SvREFCNT_dec(PL_utf8_alpha);
991 SvREFCNT_dec(PL_utf8_space);
992 SvREFCNT_dec(PL_utf8_cntrl);
993 SvREFCNT_dec(PL_utf8_graph);
994 SvREFCNT_dec(PL_utf8_digit);
995 SvREFCNT_dec(PL_utf8_upper);
996 SvREFCNT_dec(PL_utf8_lower);
997 SvREFCNT_dec(PL_utf8_print);
998 SvREFCNT_dec(PL_utf8_punct);
999 SvREFCNT_dec(PL_utf8_xdigit);
1000 SvREFCNT_dec(PL_utf8_mark);
1001 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1002 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1003 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1004 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1005 SvREFCNT_dec(PL_utf8_idstart);
1006 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c 1007 PL_utf8_alnum = NULL;
a0714e2c
SS
1008 PL_utf8_ascii = NULL;
1009 PL_utf8_alpha = NULL;
1010 PL_utf8_space = NULL;
1011 PL_utf8_cntrl = NULL;
1012 PL_utf8_graph = NULL;
1013 PL_utf8_digit = NULL;
1014 PL_utf8_upper = NULL;
1015 PL_utf8_lower = NULL;
1016 PL_utf8_print = NULL;
1017 PL_utf8_punct = NULL;
1018 PL_utf8_xdigit = NULL;
1019 PL_utf8_mark = NULL;
1020 PL_utf8_toupper = NULL;
1021 PL_utf8_totitle = NULL;
1022 PL_utf8_tolower = NULL;
1023 PL_utf8_tofold = NULL;
1024 PL_utf8_idstart = NULL;
1025 PL_utf8_idcont = NULL;
5c831c24 1026
971a9dd3 1027 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1028 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1029 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1030 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1031 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1032 CopFILE_free(&PL_compiling);
1033 CopSTASH_free(&PL_compiling);
5c831c24 1034
a0d0e21e 1035 /* Prepare to destruct main symbol table. */
5f05dabc 1036
3280af22 1037 hv = PL_defstash;
ca556bcd
DM
1038 /* break ref loop *:: <=> %:: */
1039 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1040 PL_defstash = 0;
a0d0e21e 1041 SvREFCNT_dec(hv);
5c831c24 1042 SvREFCNT_dec(PL_curstname);
a0714e2c 1043 PL_curstname = NULL;
a0d0e21e 1044
5a844595
GS
1045 /* clear queued errors */
1046 SvREFCNT_dec(PL_errors);
a0714e2c 1047 PL_errors = NULL;
5a844595 1048
dd69841b
BB
1049 SvREFCNT_dec(PL_isarev);
1050
a0d0e21e 1051 FREETMPS;
9b387841 1052 if (destruct_level >= 2) {
3280af22 1053 if (PL_scopestack_ix != 0)
9b387841
NC
1054 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1055 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1056 (long)PL_scopestack_ix);
3280af22 1057 if (PL_savestack_ix != 0)
9b387841
NC
1058 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1059 "Unbalanced saves: %ld more saves than restores\n",
1060 (long)PL_savestack_ix);
3280af22 1061 if (PL_tmps_floor != -1)
9b387841
NC
1062 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1063 (long)PL_tmps_floor + 1);
a0d0e21e 1064 if (cxstack_ix != -1)
9b387841
NC
1065 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1066 (long)cxstack_ix + 1);
a0d0e21e 1067 }
8990e307 1068
776df701 1069#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1070 /* the entries in this list are allocated via SV PVX's, so get freed
1071 * in sv_clean_all */
1072 Safefree(PL_my_cxt_list);
776df701 1073#endif
57bb2458 1074
8990e307 1075 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1076
1077 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1078 while (sv_clean_all() > 2)
5226ed68
JH
1079 ;
1080
d4777f27
GS
1081 AvREAL_off(PL_fdpid); /* no surviving entries */
1082 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1083 PL_fdpid = NULL;
d33b2eba 1084
6c644e78
GS
1085#ifdef HAVE_INTERP_INTERN
1086 sys_intern_clear();
1087#endif
1088
6e72f9df
PP
1089 /* Destruct the global string table. */
1090 {
1091 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1092 * so that sv_free() won't fail on them.
80459961
NC
1093 * Now that the global string table is using a single hunk of memory
1094 * for both HE and HEK, we either need to explicitly unshare it the
1095 * correct way, or actually free things here.
6e72f9df 1096 */
80459961
NC
1097 I32 riter = 0;
1098 const I32 max = HvMAX(PL_strtab);
c4420975 1099 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1100 HE *hent = array[0];
1101
6e72f9df 1102 for (;;) {
0453d815 1103 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1104 HE * const next = HeNEXT(hent);
9014280d 1105 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1106 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1107 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1108 Safefree(hent);
1109 hent = next;
6e72f9df
PP
1110 }
1111 if (!hent) {
1112 if (++riter > max)
1113 break;
1114 hent = array[riter];
1115 }
1116 }
80459961
NC
1117
1118 Safefree(array);
1119 HvARRAY(PL_strtab) = 0;
1120 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1121 }
3280af22 1122 SvREFCNT_dec(PL_strtab);
6e72f9df 1123
e652bb2f 1124#ifdef USE_ITHREADS
c21d1a0f 1125 /* free the pointer tables used for cloning */
a0739874 1126 ptr_table_free(PL_ptr_table);
bf9cdc68 1127 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1128#endif
a0739874 1129
d33b2eba
GS
1130 /* free special SVs */
1131
1132 SvREFCNT(&PL_sv_yes) = 0;
1133 sv_clear(&PL_sv_yes);
1134 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1135 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1136
1137 SvREFCNT(&PL_sv_no) = 0;
1138 sv_clear(&PL_sv_no);
1139 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1140 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1141
9f375a43
DM
1142 {
1143 int i;
1144 for (i=0; i<=2; i++) {
1145 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1146 sv_clear(PERL_DEBUG_PAD(i));
1147 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1148 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1149 }
1150 }
1151
0453d815 1152 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1153 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1154
eba0f806
DM
1155#ifdef DEBUG_LEAKING_SCALARS
1156 if (PL_sv_count != 0) {
1157 SV* sva;
1158 SV* sv;
1159 register SV* svend;
1160
ad64d0ec 1161 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1162 svend = &sva[SvREFCNT(sva)];
1163 for (sv = sva + 1; sv < svend; ++sv) {
1164 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1165 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1166 " flags=0x%"UVxf
fd0854ff 1167 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1168 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1169 "serial %"UVuf"\n",
574b8821
NC
1170 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1171 pTHX__VALUE,
fd0854ff
DM
1172 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1173 sv->sv_debug_line,
1174 sv->sv_debug_inpad ? "for" : "by",
1175 sv->sv_debug_optype ?
1176 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1177 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1178 sv->sv_debug_serial
fd0854ff 1179 );
2aa47728 1180#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1181 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1182#endif
eba0f806
DM
1183 }
1184 }
1185 }
1186 }
2aa47728
NC
1187#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1188 {
1189 int status;
1190 fd_set rset;
1191 /* Wait for up to 4 seconds for child to terminate.
1192 This seems to be the least effort way of timing out on reaping
1193 its exit status. */
1194 struct timeval waitfor = {4, 0};
41e4abd8 1195 int sock = PL_dumper_fd;
2aa47728
NC
1196
1197 shutdown(sock, 1);
1198 FD_ZERO(&rset);
1199 FD_SET(sock, &rset);
1200 select(sock + 1, &rset, NULL, NULL, &waitfor);
1201 waitpid(child, &status, WNOHANG);
1202 close(sock);
1203 }
1204#endif
eba0f806 1205#endif
77abb4c6
NC
1206#ifdef DEBUG_LEAKING_SCALARS_ABORT
1207 if (PL_sv_count)
1208 abort();
1209#endif
bf9cdc68 1210 PL_sv_count = 0;
eba0f806 1211
f1fac472
NC
1212#ifdef PERL_DEBUG_READONLY_OPS
1213 free(PL_slabs);
1214 PL_slabs = NULL;
1215 PL_slab_count = 0;
1216#endif
eba0f806 1217
56a2bab7 1218#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1219 /* No more IO - including error messages ! */
1220 PerlIO_cleanup(aTHX);
1221#endif
1222
9f4bd222 1223 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1224 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1225 for no arg - and will try and SvREFCNT_dec it.
1226 */
1227 SvREFCNT(&PL_sv_undef) = 0;
1228 SvREADONLY_off(&PL_sv_undef);
1229
3280af22 1230 Safefree(PL_origfilename);
bd61b366 1231 PL_origfilename = NULL;
3280af22 1232 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1233 PL_reg_start_tmp = (char**)NULL;
1234 PL_reg_start_tmpl = 0;
43c5f42d 1235 Safefree(PL_reg_curpm);
82ba1be6 1236 Safefree(PL_reg_poscache);
dd28f7bb 1237 free_tied_hv_pool();
3280af22 1238 Safefree(PL_op_mask);
cf36064f 1239 Safefree(PL_psig_name);
bf9cdc68 1240 PL_psig_name = (SV**)NULL;
d525a7b2 1241 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1242 {
1243 /* We need to NULL PL_psig_pend first, so that
1244 signal handlers know not to use it */
1245 int *psig_save = PL_psig_pend;
1246 PL_psig_pend = (int*)NULL;
1247 Safefree(psig_save);
1248 }
a0714e2c 1249 PL_formfeed = NULL;
6e72f9df 1250 nuke_stacks();
bf9cdc68
RG
1251 PL_tainting = FALSE;
1252 PL_taint_warn = FALSE;
3280af22 1253 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1254 PL_debug = 0;
ac27b0f5 1255
a0d0e21e 1256 DEBUG_P(debprofdump());
d33b2eba 1257
e5dd39fc 1258#ifdef USE_REENTRANT_API
10bc17b6 1259 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1260#endif
1261
612f20c3
GS
1262 sv_free_arenas();
1263
5d9a96ca
DM
1264 while (PL_regmatch_slab) {
1265 regmatch_slab *s = PL_regmatch_slab;
1266 PL_regmatch_slab = PL_regmatch_slab->next;
1267 Safefree(s);
1268 }
1269
fc36a67e
PP
1270 /* As the absolutely last thing, free the non-arena SV for mess() */
1271
3280af22 1272 if (PL_mess_sv) {
f350b448
NC
1273 /* we know that type == SVt_PVMG */
1274
9c63abab 1275 /* it could have accumulated taint magic */
f350b448
NC
1276 MAGIC* mg;
1277 MAGIC* moremagic;
1278 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1279 moremagic = mg->mg_moremagic;
1280 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1281 && mg->mg_len >= 0)
1282 Safefree(mg->mg_ptr);
1283 Safefree(mg);
9c63abab 1284 }
f350b448 1285
fc36a67e 1286 /* we know that type >= SVt_PV */
8bd4d4c5 1287 SvPV_free(PL_mess_sv);
3280af22
NIS
1288 Safefree(SvANY(PL_mess_sv));
1289 Safefree(PL_mess_sv);
a0714e2c 1290 PL_mess_sv = NULL;
fc36a67e 1291 }
37038d91 1292 return STATUS_EXIT;
79072805
LW
1293}
1294
954c1994
GS
1295/*
1296=for apidoc perl_free
1297
1298Releases a Perl interpreter. See L<perlembed>.
1299
1300=cut
1301*/
1302
79072805 1303void
0cb96387 1304perl_free(pTHXx)
79072805 1305{
5174512c
NC
1306 dVAR;
1307
7918f24d
NC
1308 PERL_ARGS_ASSERT_PERL_FREE;
1309
c301d606
DM
1310 if (PL_veto_cleanup)
1311 return;
1312
7cb608b5 1313#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1314 {
1315 /*
1316 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1317 * value as we're probably hunting memory leaks then
1318 */
1319 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1320 if (!s || atoi(s) == 0) {
4fd0a9b8 1321 const U32 old_debug = PL_debug;
55ef9aae
MHM
1322 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1323 thread at thread exit. */
4fd0a9b8
NC
1324 if (DEBUG_m_TEST) {
1325 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1326 "free this thread's memory\n");
1327 PL_debug &= ~ DEBUG_m_FLAG;
1328 }
55ef9aae
MHM
1329 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1330 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1331 PL_debug = old_debug;
55ef9aae
MHM
1332 }
1333 }
7cb608b5
NC
1334#endif
1335
acfe0abc 1336#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1337# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1338 {
acfe0abc 1339# ifdef NETWARE
7af12a34 1340 void *host = nw_internal_host;
acfe0abc 1341# else
7af12a34 1342 void *host = w32_internal_host;
acfe0abc 1343# endif
7af12a34 1344 PerlMem_free(aTHXx);
acfe0abc 1345# ifdef NETWARE
7af12a34 1346 nw_delete_internal_host(host);
acfe0abc 1347# else
7af12a34 1348 win32_delete_internal_host(host);
acfe0abc 1349# endif
7af12a34 1350 }
1c0ca838
GS
1351# else
1352 PerlMem_free(aTHXx);
1353# endif
acfe0abc
GS
1354#else
1355 PerlMem_free(aTHXx);
76e3520e 1356#endif
79072805
LW
1357}
1358
b7f7fff6 1359#if defined(USE_ITHREADS)
aebd1ac7
GA
1360/* provide destructors to clean up the thread key when libperl is unloaded */
1361#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1362
826955bd 1363#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1364#pragma fini "perl_fini"
666ad1ec
GA
1365#elif defined(__sun) && !defined(__GNUC__)
1366#pragma fini (perl_fini)
aebd1ac7
GA
1367#endif
1368
0dbb1585
AL
1369static void
1370#if defined(__GNUC__)
1371__attribute__((destructor))
aebd1ac7 1372#endif
de009b76 1373perl_fini(void)
aebd1ac7 1374{
27da23d5 1375 dVAR;
c301d606 1376 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1377 FREE_THREAD_KEY;
1378}
1379
1380#endif /* WIN32 */
1381#endif /* THREADS */
1382
4b556e6c 1383void
864dbfa3 1384Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1385{
97aff369 1386 dVAR;
3280af22
NIS
1387 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1388 PL_exitlist[PL_exitlistlen].fn = fn;
1389 PL_exitlist[PL_exitlistlen].ptr = ptr;
1390 ++PL_exitlistlen;
4b556e6c
JD
1391}
1392
56cf6df8
RGS
1393#ifdef HAS_PROCSELFEXE
1394/* This is a function so that we don't hold on to MAXPATHLEN
1395 bytes of stack longer than necessary
1396 */
1397STATIC void
e1ec3a88 1398S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1399{
1400 char buf[MAXPATHLEN];
1401 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1402
1403 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1404 includes a spurious NUL which will cause $^X to fail in system
1405 or backticks (this will prevent extensions from being built and
1406 many tests from working). readlink is not meant to add a NUL.
1407 Normal readlink works fine.
1408 */
1409 if (len > 0 && buf[len-1] == '\0') {
1410 len--;
1411 }
1412
1413 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1414 returning the text "unknown" from the readlink rather than the path
1415 to the executable (or returning an error from the readlink). Any valid
1416 path has a '/' in it somewhere, so use that to validate the result.
1417 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1418 */
1419 if (len > 0 && memchr(buf, '/', len)) {
1420 sv_setpvn(sv,buf,len);
1421 }
1422 else {
1423 sv_setpv(sv,arg0);
1424 }
1425}
1426#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1427
1428STATIC void
1429S_set_caret_X(pTHX) {
97aff369 1430 dVAR;
fafc274c 1431 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1432 if (tmpgv) {
1433#ifdef HAS_PROCSELFEXE
1434 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1435#else
1436#ifdef OS2
c69033f2 1437 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1438#else
c69033f2 1439 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1440#endif
1441#endif
1442 }
1443}
1444
954c1994
GS
1445/*
1446=for apidoc perl_parse
1447
1448Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1449
1450=cut
1451*/
1452
79072805 1453int
0cb96387 1454perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1455{
27da23d5 1456 dVAR;
6224f72b 1457 I32 oldscope;
6224f72b 1458 int ret;
db36c5a1 1459 dJMPENV;
8d063cd8 1460
7918f24d
NC
1461 PERL_ARGS_ASSERT_PERL_PARSE;
1462#ifndef MULTIPLICITY
ed6c66dd 1463 PERL_UNUSED_ARG(my_perl);
7918f24d 1464#endif
9d4ba2ae 1465
b0891165
JH
1466#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1467 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1468 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1469 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1470 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1471 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1472 if (!PL_rehash_seed_set)
1473 PL_rehash_seed = get_hash_seed();
b0891165 1474 {
9d4ba2ae 1475 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1476
1b6737cc
AL
1477 if (s && (atoi(s) == 1))
1478 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1479 }
1480#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1481
3280af22 1482 PL_origargc = argc;
e2975953 1483 PL_origargv = argv;
a0d0e21e 1484
a2722ac9
GA
1485 if (PL_origalen != 0) {
1486 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1487 }
1488 else {
3cb9023d
JH
1489 /* Set PL_origalen be the sum of the contiguous argv[]
1490 * elements plus the size of the env in case that it is
e9137a8e 1491 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1492 * as the maximum modifiable length of $0. In the worst case
1493 * the area we are able to modify is limited to the size of
43c32782 1494 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1495 * --jhi */
e1ec3a88 1496 const char *s = NULL;
54bfe034 1497 int i;
1b6737cc 1498 const UV mask =
7d8e7db3 1499 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1500 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1501 const UV aligned =
43c32782
JH
1502 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1503
1504 /* See if all the arguments are contiguous in memory. Note
1505 * that 'contiguous' is a loose term because some platforms
1506 * align the argv[] and the envp[]. If the arguments look
1507 * like non-aligned, assume that they are 'strictly' or
1508 * 'traditionally' contiguous. If the arguments look like
1509 * aligned, we just check that they are within aligned
1510 * PTRSIZE bytes. As long as no system has something bizarre
1511 * like the argv[] interleaved with some other data, we are
1512 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1513 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1514 while (*s) s++;
1515 for (i = 1; i < PL_origargc; i++) {
1516 if ((PL_origargv[i] == s + 1
43c32782 1517#ifdef OS2
c8941eeb 1518 || PL_origargv[i] == s + 2
43c32782 1519#endif
c8941eeb
JH
1520 )
1521 ||
1522 (aligned &&
1523 (PL_origargv[i] > s &&
1524 PL_origargv[i] <=
1525 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 )
1527 {
1528 s = PL_origargv[i];
1529 while (*s) s++;
1530 }
1531 else
1532 break;
54bfe034 1533 }
54bfe034 1534 }
a4a109c2
JD
1535
1536#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1537 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1538 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1539 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1540 ||
1541 (aligned &&
1542 (PL_origenviron[0] > s &&
1543 PL_origenviron[0] <=
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1545 )
1546 {
9d419b5f 1547#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1548 s = PL_origenviron[0];
1549 while (*s) s++;
1550#endif
bd61b366 1551 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1552 /* Force copy of environment. */
1553 for (i = 1; PL_origenviron[i]; i++) {
1554 if (PL_origenviron[i] == s + 1
1555 ||
1556 (aligned &&
1557 (PL_origenviron[i] > s &&
1558 PL_origenviron[i] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 )
1561 {
1562 s = PL_origenviron[i];
1563 while (*s) s++;
1564 }
1565 else
1566 break;
54bfe034 1567 }
43c32782 1568 }
54bfe034 1569 }
a4a109c2
JD
1570#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1571
2d2af554 1572 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1573 }
1574
3280af22 1575 if (PL_do_undump) {
a0d0e21e
LW
1576
1577 /* Come here if running an undumped a.out. */
1578
3280af22
NIS
1579 PL_origfilename = savepv(argv[0]);
1580 PL_do_undump = FALSE;
a0d0e21e 1581 cxstack_ix = -1; /* start label stack again */
748a9306 1582 init_ids();
b7975bdd
NC
1583 assert (!PL_tainted);
1584 TAINT;
1585 S_set_caret_X(aTHX);
1586 TAINT_NOT;
a0d0e21e
LW
1587 init_postdump_symbols(argc,argv,env);
1588 return 0;
1589 }
1590
3280af22 1591 if (PL_main_root) {
3280af22 1592 op_free(PL_main_root);
5f66b61c 1593 PL_main_root = NULL;
ff0cee69 1594 }
5f66b61c 1595 PL_main_start = NULL;
3280af22 1596 SvREFCNT_dec(PL_main_cv);
601f1833 1597 PL_main_cv = NULL;
79072805 1598
3280af22
NIS
1599 time(&PL_basetime);
1600 oldscope = PL_scopestack_ix;
599cee73 1601 PL_dowarn = G_WARN_OFF;
f86702cc 1602
14dd3ad8 1603 JMPENV_PUSH(ret);
6224f72b 1604 switch (ret) {
312caa8e 1605 case 0:
14dd3ad8 1606 parse_body(env,xsinit);
3c10abe3
AG
1607 if (PL_unitcheckav)
1608 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1609 if (PL_checkav)
1610 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1611 ret = 0;
1612 break;
6224f72b
GS
1613 case 1:
1614 STATUS_ALL_FAILURE;
1615 /* FALL THROUGH */
1616 case 2:
1617 /* my_exit() was called */
3280af22 1618 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1619 LEAVE;
1620 FREETMPS;
3280af22 1621 PL_curstash = PL_defstash;
3c10abe3
AG
1622 if (PL_unitcheckav)
1623 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1624 if (PL_checkav)
1625 call_list(oldscope, PL_checkav);
37038d91 1626 ret = STATUS_EXIT;
14dd3ad8 1627 break;
6224f72b 1628 case 3:
bf49b057 1629 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1630 ret = 1;
1631 break;
6224f72b 1632 }
14dd3ad8
GS
1633 JMPENV_POP;
1634 return ret;
1635}
1636
4a5df386
NC
1637/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1638 miniperl, and we need to see those flags reflected in the values here. */
1639
1640/* What this returns is subject to change. Use the public interface in Config.
1641 */
1642static void
1643S_Internals_V(pTHX_ CV *cv)
1644{
1645 dXSARGS;
1646#ifdef LOCAL_PATCH_COUNT
1647 const int local_patch_count = LOCAL_PATCH_COUNT;
1648#else
1649 const int local_patch_count = 0;
1650#endif
2dc296d2 1651 const int entries = 3 + local_patch_count;
4a5df386
NC
1652 int i;
1653 static char non_bincompat_options[] =
1654# ifdef DEBUGGING
1655 " DEBUGGING"
1656# endif
1657# ifdef NO_MATHOMS
0d311fbe 1658 " NO_MATHOMS"
4a5df386
NC
1659# endif
1660# ifdef PERL_DISABLE_PMC
1661 " PERL_DISABLE_PMC"
1662# endif
1663# ifdef PERL_DONT_CREATE_GVSV
1664 " PERL_DONT_CREATE_GVSV"
1665# endif
9a044a43
NC
1666# ifdef PERL_EXTERNAL_GLOB
1667 " PERL_EXTERNAL_GLOB"
1668# endif
4a5df386
NC
1669# ifdef PERL_IS_MINIPERL
1670 " PERL_IS_MINIPERL"
1671# endif
1672# ifdef PERL_MALLOC_WRAP
1673 " PERL_MALLOC_WRAP"
1674# endif
1675# ifdef PERL_MEM_LOG
1676 " PERL_MEM_LOG"
1677# endif
1678# ifdef PERL_MEM_LOG_NOIMPL
1679 " PERL_MEM_LOG_NOIMPL"
1680# endif
1681# ifdef PERL_USE_DEVEL
1682 " PERL_USE_DEVEL"
1683# endif
1684# ifdef PERL_USE_SAFE_PUTENV
1685 " PERL_USE_SAFE_PUTENV"
1686# endif
de618ee4
NC
1687# ifdef USE_ATTRIBUTES_FOR_PERLIO
1688 " USE_ATTRIBUTES_FOR_PERLIO"
1689# endif
4a5df386
NC
1690# ifdef USE_FAST_STDIO
1691 " USE_FAST_STDIO"
1692# endif
5a8d8935
NC
1693# ifdef USE_PERL_ATOF
1694 " USE_PERL_ATOF"
1695# endif
0d311fbe
NC
1696# ifdef USE_SITECUSTOMIZE
1697 " USE_SITECUSTOMIZE"
1698# endif
4a5df386
NC
1699 ;
1700 PERL_UNUSED_ARG(cv);
1701 PERL_UNUSED_ARG(items);
1702
1703 EXTEND(SP, entries);
1704
1705 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1706 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1707 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1708
1709#ifdef __DATE__
1710# ifdef __TIME__
1711 PUSHs(Perl_newSVpvn_flags(aTHX_
1712 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1713 SVs_TEMP));
1714# else
1715 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1716 SVs_TEMP));
1717# endif
1718#else
1719 PUSHs(&PL_sv_undef);
1720#endif
1721
4a5df386
NC
1722 for (i = 1; i <= local_patch_count; i++) {
1723 /* This will be an undef, if PL_localpatches[i] is NULL. */
1724 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1725 }
1726
1727 XSRETURN(entries);
1728}
1729
be71fc8f
NC
1730#define INCPUSH_UNSHIFT 0x01
1731#define INCPUSH_ADD_OLD_VERS 0x02
1732#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1733#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1734#define INCPUSH_NOT_BASEDIR 0x10
1735#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1736#define INCPUSH_ADD_SUB_DIRS \
1737 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1738
312caa8e 1739STATIC void *
14dd3ad8 1740S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1741{
27da23d5 1742 dVAR;
2f9285f8 1743 PerlIO *rsfp;
312caa8e 1744 int argc = PL_origargc;
8f42b153 1745 char **argv = PL_origargv;
e1ec3a88 1746 const char *scriptname = NULL;
312caa8e 1747 VOL bool dosearch = FALSE;
c7030b81 1748 register char c;
bd61b366 1749 const char *cddir = NULL;
ab019eaa 1750#ifdef USE_SITECUSTOMIZE
20ef40cf 1751 bool minus_f = FALSE;
ab019eaa 1752#endif
009d90df 1753 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1754 bool add_read_e_script = FALSE;
009d90df
DM
1755
1756 SvGROW(linestr_sv, 80);
76f68e9b 1757 sv_setpvs(linestr_sv,"");
312caa8e 1758
6224f72b 1759 init_main_stash();
54310121 1760
c7030b81
NC
1761 {
1762 const char *s;
6224f72b
GS
1763 for (argc--,argv++; argc > 0; argc--,argv++) {
1764 if (argv[0][0] != '-' || !argv[0][1])
1765 break;
6224f72b
GS
1766 s = argv[0]+1;
1767 reswitch:
47f56822 1768 switch ((c = *s)) {
729a02f2 1769 case 'C':
1d5472a9
GS
1770#ifndef PERL_STRICT_CR
1771 case '\r':
1772#endif
6224f72b
GS
1773 case ' ':
1774 case '0':
1775 case 'F':
1776 case 'a':
1777 case 'c':
1778 case 'd':
1779 case 'D':
1780 case 'h':
1781 case 'i':
1782 case 'l':
1783 case 'M':
1784 case 'm':
1785 case 'n':
1786 case 'p':
1787 case 's':
1788 case 'u':
1789 case 'U':
1790 case 'v':
599cee73
PM
1791 case 'W':
1792 case 'X':
6224f72b 1793 case 'w':
97bd5664 1794 if ((s = moreswitches(s)))
6224f72b
GS
1795 goto reswitch;
1796 break;
33b78306 1797
1dbad523 1798 case 't':
22f7c9c9 1799 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1800 if( !PL_tainting ) {
1801 PL_taint_warn = TRUE;
1802 PL_tainting = TRUE;
1803 }
1804 s++;
1805 goto reswitch;
6224f72b 1806 case 'T':
22f7c9c9 1807 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1808 PL_tainting = TRUE;
317ea90d 1809 PL_taint_warn = FALSE;
6224f72b
GS
1810 s++;
1811 goto reswitch;
f86702cc 1812
bc9b29db
RH
1813 case 'E':
1814 PL_minus_E = TRUE;
1815 /* FALL THROUGH */
6224f72b 1816 case 'e':
f20b2998 1817 forbid_setid('e', FALSE);
3280af22 1818 if (!PL_e_script) {
396482e1 1819 PL_e_script = newSVpvs("");
5486870f 1820 add_read_e_script = TRUE;
6224f72b
GS
1821 }
1822 if (*++s)
3280af22 1823 sv_catpv(PL_e_script, s);
6224f72b 1824 else if (argv[1]) {
3280af22 1825 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1826 argc--,argv++;
1827 }
1828 else
47f56822 1829 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1830 sv_catpvs(PL_e_script, "\n");
6224f72b 1831 break;
afe37c7d 1832
20ef40cf 1833 case 'f':
f5542d3a 1834#ifdef USE_SITECUSTOMIZE
20ef40cf 1835 minus_f = TRUE;
f5542d3a 1836#endif
20ef40cf
GA
1837 s++;
1838 goto reswitch;
1839
6224f72b 1840 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1841 forbid_setid('I', FALSE);
bd61b366 1842 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1843 argc--,argv++;
1844 }
6224f72b 1845 if (s && *s) {
0df16ed7 1846 STRLEN len = strlen(s);
55b4bc1c 1847 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1848 }
1849 else
a67e862a 1850 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1851 break;
6224f72b 1852 case 'S':
f20b2998 1853 forbid_setid('S', FALSE);
6224f72b
GS
1854 dosearch = TRUE;
1855 s++;
1856 goto reswitch;
1857 case 'V':
7edfd0ef
NC
1858 {
1859 SV *opts_prog;
1860
7edfd0ef 1861 if (*++s != ':') {
37ca4a5b 1862 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1863 }
1864 else {
1865 ++s;
1866 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1867 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1868 0, s, 0);
1869 s += strlen(s);
1870 }
37ca4a5b 1871 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1872 /* don't look for script or read stdin */
1873 scriptname = BIT_BUCKET;
1874 goto reswitch;
6224f72b 1875 }
6224f72b 1876 case 'x':
3280af22 1877 PL_doextract = TRUE;
6224f72b 1878 s++;
304334da 1879 if (*s)
f4c556ac 1880 cddir = s;
6224f72b
GS
1881 break;
1882 case 0:
1883 break;
1884 case '-':
1885 if (!*++s || isSPACE(*s)) {
1886 argc--,argv++;
1887 goto switch_end;
1888 }
1889 /* catch use of gnu style long options */
1890 if (strEQ(s, "version")) {
dd374669 1891 s = (char *)"v";
6224f72b
GS
1892 goto reswitch;
1893 }
1894 if (strEQ(s, "help")) {
dd374669 1895 s = (char *)"h";
6224f72b
GS
1896 goto reswitch;
1897 }
1898 s--;
1899 /* FALL THROUGH */
1900 default:
cea2e8a9 1901 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1902 }
1903 }
c7030b81
NC
1904 }
1905
6224f72b 1906 switch_end:
54310121 1907
c7030b81
NC
1908 {
1909 char *s;
1910
f675dbe5
CB
1911 if (
1912#ifndef SECURE_INTERNAL_GETENV
1913 !PL_tainting &&
1914#endif
cf756827 1915 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1916 {
74288ac8
GS
1917 while (isSPACE(*s))
1918 s++;
317ea90d 1919 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1920 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1921 PL_tainting = TRUE;
317ea90d
MS
1922 PL_taint_warn = FALSE;
1923 }
74288ac8 1924 else {
bd61b366 1925 char *popt_copy = NULL;
74288ac8 1926 while (s && *s) {
54913509 1927 const char *d;
74288ac8
GS
1928 while (isSPACE(*s))
1929 s++;
1930 if (*s == '-') {
1931 s++;
1932 if (isSPACE(*s))
1933 continue;
1934 }
4ea8f8fb 1935 d = s;
74288ac8
GS
1936 if (!*s)
1937 break;
2b622f1a 1938 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1939 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1940 while (++s && *s) {
1941 if (isSPACE(*s)) {
cf756827 1942 if (!popt_copy) {
bfa6c418
NC
1943 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1944 s = popt_copy + (s - d);
1945 d = popt_copy;
cf756827 1946 }
4ea8f8fb
MS
1947 *s++ = '\0';
1948 break;
1949 }
1950 }
1c4db469 1951 if (*d == 't') {
317ea90d
MS
1952 if( !PL_tainting ) {
1953 PL_taint_warn = TRUE;
1954 PL_tainting = TRUE;
1955 }
1c4db469 1956 } else {
97bd5664 1957 moreswitches(d);
1c4db469 1958 }
6224f72b 1959 }
6224f72b
GS
1960 }
1961 }
c7030b81 1962 }
a0d0e21e 1963
87e06404 1964#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1965 if (!minus_f) {
404ad9dc
NC
1966 /* SITELIB_EXP is a function call on Win32.
1967 The games with local $! are to avoid setting errno if there is no
1968 sitecustomize script. */
1969 const char *const sitelib = SITELIB_EXP;
29a861e7 1970 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1971 Perl_newSVpvf(aTHX_
1972 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1973 }
1974#endif
1975
6224f72b
GS
1976 if (!scriptname)
1977 scriptname = argv[0];
3280af22 1978 if (PL_e_script) {
6224f72b
GS
1979 argc++,argv--;
1980 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1981 }
bd61b366 1982 else if (scriptname == NULL) {
6224f72b
GS
1983#ifdef MSDOS
1984 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1985 moreswitches("h");
6224f72b
GS
1986#endif
1987 scriptname = "-";
1988 }
1989
b7975bdd
NC
1990 /* Set $^X early so that it can be used for relocatable paths in @INC */
1991 assert (!PL_tainted);
1992 TAINT;
1993 S_set_caret_X(aTHX);
1994 TAINT_NOT;
2cace6ac 1995 init_perllib();
6224f72b 1996
a52eba0e 1997 {
f20b2998 1998 bool suidscript = FALSE;
829372d3 1999
cc69b689 2000 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2001
2f9285f8 2002 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2003 linestr_sv, rsfp);
6224f72b 2004
64ca3a65 2005#ifndef PERL_MICRO
a52eba0e
NC
2006# if defined(SIGCHLD) || defined(SIGCLD)
2007 {
2008# ifndef SIGCHLD
2009# define SIGCHLD SIGCLD
2010# endif
2011 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2012 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2013 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2014 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2015 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2016 }
0b5b802d 2017 }
a52eba0e 2018# endif
64ca3a65 2019#endif
0b5b802d 2020
e37778c2 2021 if (PL_doextract) {
faef540c 2022
f20b2998 2023 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2024 setuid scripts. */
2025 forbid_setid('x', suidscript);
f20b2998 2026 /* Hence you can't get here if suidscript is true */
faef540c 2027
2f9285f8 2028 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2029 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2030 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2031 }
f4c556ac 2032 }
6224f72b 2033
ea726b52 2034 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2035 CvUNIQUE_on(PL_compcv);
2036
dd2155a4 2037 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2038
dd69841b
BB
2039 PL_isarev = newHV();
2040
0c4f7ff0 2041 boot_core_PerlIO();
6224f72b 2042 boot_core_UNIVERSAL();
e1a479c5 2043 boot_core_mro();
4a5df386 2044 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2045
2046 if (xsinit)
acfe0abc 2047 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2048#ifndef PERL_MICRO
d0d72822 2049#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2050 init_os_extras();
6224f72b 2051#endif
64ca3a65 2052#endif
6224f72b 2053
29209bc5 2054#ifdef USE_SOCKS
1b9c9cf5
DH
2055# ifdef HAS_SOCKS5_INIT
2056 socks5_init(argv[0]);
2057# else
29209bc5 2058 SOCKSinit(argv[0]);
1b9c9cf5 2059# endif
ac27b0f5 2060#endif
29209bc5 2061
6224f72b
GS
2062 init_predump_symbols();
2063 /* init_postdump_symbols not currently designed to be called */
2064 /* more than once (ENV isn't cleared first, for example) */
2065 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2066 if (!PL_do_undump)
6224f72b
GS
2067 init_postdump_symbols(argc,argv,env);
2068
27da23d5
JH
2069 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2070 * or explicitly in some platforms.
085a54d9 2071 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2072 * look like the user wants to use UTF-8. */
a0fd4948 2073#if defined(__SYMBIAN32__)
27da23d5
JH
2074 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2075#endif
e27b5b51 2076# ifndef PERL_IS_MINIPERL
06e66572
JH
2077 if (PL_unicode) {
2078 /* Requires init_predump_symbols(). */
a05d7ebb 2079 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2080 IO* io;
2081 PerlIO* fp;
2082 SV* sv;
2083
a05d7ebb 2084 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2085 * and the default open disciplines. */
a05d7ebb
JH
2086 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2087 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2088 (fp = IoIFP(io)))
2089 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2090 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2091 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2092 (fp = IoOFP(io)))
2093 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2094 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2095 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2096 (fp = IoOFP(io)))
2097 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2098 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2099 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2100 SVt_PV)))) {
a05d7ebb
JH
2101 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2102 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2103 if (in) {
2104 if (out)
76f68e9b 2105 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2106 else
76f68e9b 2107 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2108 }
2109 else if (out)
76f68e9b 2110 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2111 SvSETMAGIC(sv);
2112 }
b310b053
JH
2113 }
2114 }
e27b5b51 2115#endif
b310b053 2116
c7030b81
NC
2117 {
2118 const char *s;
4ffa73a3
JH
2119 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2120 if (strEQ(s, "unsafe"))
2121 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2122 else if (strEQ(s, "safe"))
2123 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2124 else
2125 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2126 }
c7030b81 2127 }
4ffa73a3 2128
81d86705 2129#ifdef PERL_MAD
c7030b81
NC
2130 {
2131 const char *s;
81d86705
NC
2132 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2133 PL_madskills = 1;
2134 PL_minus_c = 1;
2135 if (!s || !s[0])
2136 PL_xmlfp = PerlIO_stdout();
2137 else {
2138 PL_xmlfp = PerlIO_open(s, "w");
2139 if (!PL_xmlfp)
2140 Perl_croak(aTHX_ "Can't open %s", s);
2141 }
1a9a51d4 2142 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2143 }
c7030b81
NC
2144 }
2145
2146 {
2147 const char *s;
81d86705
NC
2148 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2149 PL_madskills = atoi(s);
1a9a51d4 2150 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2151 }
c7030b81 2152 }
81d86705
NC
2153#endif
2154
f07ec6dd 2155 lex_start(linestr_sv, rsfp);
219f7226 2156 PL_subname = newSVpvs("main");
6224f72b 2157
5486870f
DM
2158 if (add_read_e_script)
2159 filter_add(read_e_script, NULL);
2160
6224f72b
GS
2161 /* now parse the script */
2162
93189314 2163 SETERRNO(0,SS_NORMAL);
28ac2b49 2164 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2165 if (PL_minus_c)
cea2e8a9 2166 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2167 else {
cea2e8a9 2168 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2169 PL_origfilename);
6224f72b
GS
2170 }
2171 }
57843af0 2172 CopLINE_set(PL_curcop, 0);
3280af22 2173 PL_curstash = PL_defstash;
3280af22
NIS
2174 if (PL_e_script) {
2175 SvREFCNT_dec(PL_e_script);
a0714e2c 2176 PL_e_script = NULL;
6224f72b
GS
2177 }
2178
3280af22 2179 if (PL_do_undump)
6224f72b
GS
2180 my_unexec();
2181
57843af0
GS
2182 if (isWARN_ONCE) {
2183 SAVECOPFILE(PL_curcop);
2184 SAVECOPLINE(PL_curcop);
3280af22 2185 gv_check(PL_defstash);
57843af0 2186 }
6224f72b
GS
2187
2188 LEAVE;
2189 FREETMPS;
2190
2191#ifdef MYMALLOC
f6a607bc
RGS
2192 {
2193 const char *s;
6224f72b
GS
2194 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2195 dump_mstats("after compilation:");
f6a607bc 2196 }
6224f72b
GS
2197#endif
2198
2199 ENTER;
febb3a6d 2200 PL_restartjmpenv = NULL;
3280af22 2201 PL_restartop = 0;
312caa8e 2202 return NULL;
6224f72b
GS
2203}
2204
954c1994
GS
2205/*
2206=for apidoc perl_run
2207
2208Tells a Perl interpreter to run. See L<perlembed>.
2209
2210=cut
2211*/
2212
6224f72b 2213int
0cb96387 2214perl_run(pTHXx)
6224f72b 2215{
97aff369 2216 dVAR;
6224f72b 2217 I32 oldscope;
14dd3ad8 2218 int ret = 0;
db36c5a1 2219 dJMPENV;
6224f72b 2220
7918f24d
NC
2221 PERL_ARGS_ASSERT_PERL_RUN;
2222#ifndef MULTIPLICITY
ed6c66dd 2223 PERL_UNUSED_ARG(my_perl);
7918f24d 2224#endif
9d4ba2ae 2225
3280af22 2226 oldscope = PL_scopestack_ix;
96e176bf
CL
2227#ifdef VMS
2228 VMSISH_HUSHED = 0;
2229#endif
6224f72b 2230
14dd3ad8 2231 JMPENV_PUSH(ret);
6224f72b
GS
2232 switch (ret) {
2233 case 1:
2234 cxstack_ix = -1; /* start context stack again */
312caa8e 2235 goto redo_body;
14dd3ad8 2236 case 0: /* normal completion */
14dd3ad8
GS
2237 redo_body:
2238 run_body(oldscope);
14dd3ad8
GS
2239 /* FALL THROUGH */
2240 case 2: /* my_exit() */
3280af22 2241 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2242 LEAVE;
2243 FREETMPS;
3280af22 2244 PL_curstash = PL_defstash;
3a1ee7e8 2245 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2246 PL_endav && !PL_minus_c)
2247 call_list(oldscope, PL_endav);
6224f72b
GS
2248#ifdef MYMALLOC
2249 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2250 dump_mstats("after execution: ");
2251#endif
37038d91 2252 ret = STATUS_EXIT;
14dd3ad8 2253 break;
6224f72b 2254 case 3:
312caa8e
CS
2255 if (PL_restartop) {
2256 POPSTACK_TO(PL_mainstack);
2257 goto redo_body;
6224f72b 2258 }
bf49b057 2259 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2260 FREETMPS;
14dd3ad8
GS
2261 ret = 1;
2262 break;
6224f72b
GS
2263 }
2264
14dd3ad8
GS
2265 JMPENV_POP;
2266 return ret;
312caa8e
CS
2267}
2268
dd374669 2269STATIC void
14dd3ad8
GS
2270S_run_body(pTHX_ I32 oldscope)
2271{
97aff369 2272 dVAR;
6224f72b 2273 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2274 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2275
3280af22 2276 if (!PL_restartop) {
81d86705
NC
2277#ifdef PERL_MAD
2278 if (PL_xmlfp) {
2279 xmldump_all();
2280 exit(0); /* less likely to core dump than my_exit(0) */
2281 }
2282#endif
cf2782cd 2283#ifdef DEBUGGING
f0e3f042
CS
2284 if (DEBUG_x_TEST || DEBUG_B_TEST)
2285 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2286 if (!DEBUG_q_TEST)
2287 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2288#endif
6224f72b 2289
3280af22 2290 if (PL_minus_c) {
bf49b057 2291 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2292 my_exit(0);
2293 }
3280af22 2294 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2295 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2296 if (PL_initav)
2297 call_list(oldscope, PL_initav);
f1fac472
NC
2298#ifdef PERL_DEBUG_READONLY_OPS
2299 Perl_pending_Slabs_to_ro(aTHX);
2300#endif
6224f72b
GS
2301 }
2302
2303 /* do it */
2304
3280af22 2305 if (PL_restartop) {
febb3a6d 2306 PL_restartjmpenv = NULL;
533c011a 2307 PL_op = PL_restartop;
3280af22 2308 PL_restartop = 0;
cea2e8a9 2309 CALLRUNOPS(aTHX);
6224f72b 2310 }
3280af22
NIS
2311 else if (PL_main_start) {
2312 CvDEPTH(PL_main_cv) = 1;
533c011a 2313 PL_op = PL_main_start;
cea2e8a9 2314 CALLRUNOPS(aTHX);
6224f72b 2315 }
f6b3007c
JH
2316 my_exit(0);
2317 /* NOTREACHED */
6224f72b
GS
2318}
2319
954c1994 2320/*
ccfc67b7
JH
2321=head1 SV Manipulation Functions
2322
954c1994
GS
2323=for apidoc p||get_sv
2324
64ace3f8
NC
2325Returns the SV of the specified Perl scalar. C<flags> are passed to
2326C<gv_fetchpv>. If C<GV_ADD> is set and the
2327Perl variable does not exist then it will be created. If C<flags> is zero
2328and the variable does not exist then NULL is returned.
954c1994
GS
2329
2330=cut
2331*/
2332
6224f72b 2333SV*
64ace3f8 2334Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2335{
2336 GV *gv;
7918f24d
NC
2337
2338 PERL_ARGS_ASSERT_GET_SV;
2339
64ace3f8 2340 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2341 if (gv)
2342 return GvSV(gv);
a0714e2c 2343 return NULL;
6224f72b
GS
2344}
2345
954c1994 2346/*
ccfc67b7
JH
2347=head1 Array Manipulation Functions
2348
954c1994
GS
2349=for apidoc p||get_av
2350
cbfd0a87
NC
2351Returns the AV of the specified Perl array. C<flags> are passed to
2352C<gv_fetchpv>. If C<GV_ADD> is set and the
2353Perl variable does not exist then it will be created. If C<flags> is zero
2354and the variable does not exist then NULL is returned.
954c1994
GS
2355
2356=cut
2357*/
2358
6224f72b 2359AV*
cbfd0a87 2360Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2361{
cbfd0a87 2362 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2363
2364 PERL_ARGS_ASSERT_GET_AV;
2365
cbfd0a87 2366 if (flags)
6224f72b
GS
2367 return GvAVn(gv);
2368 if (gv)
2369 return GvAV(gv);
7d49f689 2370 return NULL;
6224f72b
GS
2371}
2372
954c1994 2373/*
ccfc67b7
JH
2374=head1 Hash Manipulation Functions
2375
954c1994
GS
2376=for apidoc p||get_hv
2377
6673a63c
NC
2378Returns the HV of the specified Perl hash. C<flags> are passed to
2379C<gv_fetchpv>. If C<GV_ADD> is set and the
2380Perl variable does not exist then it will be created. If C<flags> is zero
2381and the variable does not exist then NULL is returned.
954c1994
GS
2382
2383=cut
2384*/
2385
6224f72b 2386HV*
6673a63c 2387Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2388{
6673a63c 2389 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2390
2391 PERL_ARGS_ASSERT_GET_HV;
2392
6673a63c 2393 if (flags)
a0d0e21e
LW
2394 return GvHVn(gv);
2395 if (gv)
2396 return GvHV(gv);
5c284bb0 2397 return NULL;
a0d0e21e
LW
2398}
2399
954c1994 2400/*
ccfc67b7
JH
2401=head1 CV Manipulation Functions
2402
780a5241
NC
2403=for apidoc p||get_cvn_flags
2404
2405Returns the CV of the specified Perl subroutine. C<flags> are passed to
2406C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2407exist then it will be declared (which has the same effect as saying
2408C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2409then NULL is returned.
2410
954c1994
GS
2411=for apidoc p||get_cv
2412
780a5241 2413Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2414
2415=cut
2416*/
2417
a0d0e21e 2418CV*
780a5241 2419Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2420{
780a5241 2421 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2422 /* XXX this is probably not what they think they're getting.
2423 * It has the same effect as "sub name;", i.e. just a forward
2424 * declaration! */
7918f24d
NC
2425
2426 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2427
780a5241 2428 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2429 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2430 return newSUB(start_subparse(FALSE, 0),
780a5241 2431 newSVOP(OP_CONST, 0, sv),
5f66b61c 2432 NULL, NULL);
780a5241 2433 }
a0d0e21e 2434 if (gv)
8ebc5c01 2435 return GvCVu(gv);
601f1833 2436 return NULL;
a0d0e21e
LW
2437}
2438
2c67934f
NC
2439/* Nothing in core calls this now, but we can't replace it with a macro and
2440 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2441CV*
2442Perl_get_cv(pTHX_ const char *name, I32 flags)
2443{
7918f24d
NC
2444 PERL_ARGS_ASSERT_GET_CV;
2445
780a5241
NC
2446 return get_cvn_flags(name, strlen(name), flags);
2447}
2448
79072805
LW
2449/* Be sure to refetch the stack pointer after calling these routines. */
2450
954c1994 2451/*
ccfc67b7
JH
2452
2453=head1 Callback Functions
2454
954c1994
GS
2455=for apidoc p||call_argv
2456
2457Performs a callback to the specified Perl sub. See L<perlcall>.
2458
2459=cut
2460*/
2461
a0d0e21e 2462I32
8f42b153 2463Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2464
8ac85365
NIS
2465 /* See G_* flags in cop.h */
2466 /* null terminated arg list */
8990e307 2467{
97aff369 2468 dVAR;
a0d0e21e 2469 dSP;
8990e307 2470
7918f24d
NC
2471 PERL_ARGS_ASSERT_CALL_ARGV;
2472
924508f0 2473 PUSHMARK(SP);
a0d0e21e 2474 if (argv) {
8990e307 2475 while (*argv) {
6e449a3a 2476 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2477 argv++;
2478 }
a0d0e21e 2479 PUTBACK;
8990e307 2480 }
864dbfa3 2481 return call_pv(sub_name, flags);
8990e307
LW
2482}
2483
954c1994
GS
2484/*
2485=for apidoc p||call_pv
2486
2487Performs a callback to the specified Perl sub. See L<perlcall>.
2488
2489=cut
2490*/
2491
a0d0e21e 2492I32
864dbfa3 2493Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2494 /* name of the subroutine */
2495 /* See G_* flags in cop.h */
a0d0e21e 2496{
7918f24d
NC
2497 PERL_ARGS_ASSERT_CALL_PV;
2498
0da0e728 2499 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2500}
2501
954c1994
GS
2502/*
2503=for apidoc p||call_method
2504
2505Performs a callback to the specified Perl method. The blessed object must
2506be on the stack. See L<perlcall>.
2507
2508=cut
2509*/
2510
a0d0e21e 2511I32
864dbfa3 2512Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2513 /* name of the subroutine */
2514 /* See G_* flags in cop.h */
a0d0e21e 2515{
46ca9bac 2516 STRLEN len;
7918f24d
NC
2517 PERL_ARGS_ASSERT_CALL_METHOD;
2518
46ca9bac 2519 len = strlen(methname);
2520
2521 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2522 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2523}
2524
2525/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2526/*
2527=for apidoc p||call_sv
2528
2529Performs a callback to the Perl sub whose name is in the SV. See
2530L<perlcall>.
2531
2532=cut
2533*/
2534
a0d0e21e 2535I32
001d637e 2536Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2537 /* See G_* flags in cop.h */
a0d0e21e 2538{
27da23d5 2539 dVAR; dSP;
a0d0e21e 2540 LOGOP myop; /* fake syntax tree node */
968b3946 2541 UNOP method_op;
aa689395 2542 I32 oldmark;
8ea43dc8 2543 VOL I32 retval = 0;
a0d0e21e 2544 I32 oldscope;
54310121 2545 bool oldcatch = CATCH_GET;
6224f72b 2546 int ret;
c4420975 2547 OP* const oldop = PL_op;
db36c5a1 2548 dJMPENV;
1e422769 2549
7918f24d
NC
2550 PERL_ARGS_ASSERT_CALL_SV;
2551
a0d0e21e
LW
2552 if (flags & G_DISCARD) {
2553 ENTER;
2554 SAVETMPS;
2555 }
2f8edad0
NC
2556 if (!(flags & G_WANT)) {
2557 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2558 */
2559 flags |= G_SCALAR;
2560 }
a0d0e21e 2561
aa689395 2562 Zero(&myop, 1, LOGOP);
5f66b61c 2563 myop.op_next = NULL;
f51d4af5 2564 if (!(flags & G_NOARGS))
aa689395 2565 myop.op_flags |= OPf_STACKED;
4f911530 2566 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2567 SAVEOP();
533c011a 2568 PL_op = (OP*)&myop;
aa689395 2569
3280af22
NIS
2570 EXTEND(PL_stack_sp, 1);
2571 *++PL_stack_sp = sv;
aa689395 2572 oldmark = TOPMARK;
3280af22 2573 oldscope = PL_scopestack_ix;
a0d0e21e 2574
3280af22 2575 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2576 /* Handle first BEGIN of -d. */
3280af22 2577 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2578 /* Try harder, since this may have been a sighandler, thus
2579 * curstash may be meaningless. */
ea726b52 2580 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2581 && !(flags & G_NODEBUG))
533c011a 2582 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2583
968b3946
GS
2584 if (flags & G_METHOD) {
2585 Zero(&method_op, 1, UNOP);
2586 method_op.op_next = PL_op;
2587 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2588 method_op.op_type = OP_METHOD;
968b3946 2589 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2590 myop.op_type = OP_ENTERSUB;
f39d0b86 2591 PL_op = (OP*)&method_op;
968b3946
GS
2592 }
2593
312caa8e 2594 if (!(flags & G_EVAL)) {
0cdb2077 2595 CATCH_SET(TRUE);
d6f07c05 2596 CALL_BODY_SUB((OP*)&myop);
312caa8e 2597 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2598 CATCH_SET(oldcatch);
312caa8e
CS
2599 }
2600 else {
d78bda3d 2601 myop.op_other = (OP*)&myop;
3280af22 2602 PL_markstack_ptr--;
edb2152a 2603 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2604 PL_markstack_ptr++;
a0d0e21e 2605
14dd3ad8 2606 JMPENV_PUSH(ret);
edb2152a 2607
6224f72b
GS
2608 switch (ret) {
2609 case 0:
14dd3ad8 2610 redo_body:
d6f07c05 2611 CALL_BODY_SUB((OP*)&myop);
312caa8e 2612 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2613 if (!(flags & G_KEEPERR)) {
ab69dbc2 2614 CLEAR_ERRSV();
8433848b 2615 }
a0d0e21e 2616 break;
6224f72b 2617 case 1:
f86702cc 2618 STATUS_ALL_FAILURE;
a0d0e21e 2619 /* FALL THROUGH */
6224f72b 2620 case 2:
a0d0e21e 2621 /* my_exit() was called */
3280af22 2622 PL_curstash = PL_defstash;
a0d0e21e 2623 FREETMPS;
14dd3ad8 2624 JMPENV_POP;
f86702cc 2625 my_exit_jump();
a0d0e21e 2626 /* NOTREACHED */
6224f72b 2627 case 3:
3280af22 2628 if (PL_restartop) {
febb3a6d 2629 PL_restartjmpenv = NULL;
533c011a 2630 PL_op = PL_restartop;
3280af22 2631 PL_restartop = 0;
312caa8e 2632 goto redo_body;
a0d0e21e 2633 }
3280af22 2634 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2635 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2636 retval = 0;
2637 else {
2638 retval = 1;
3280af22 2639 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2640 }
312caa8e 2641 break;
a0d0e21e 2642 }
a0d0e21e 2643
edb2152a
NC
2644 if (PL_scopestack_ix > oldscope)
2645 delete_eval_scope();
14dd3ad8 2646 JMPENV_POP;
a0d0e21e 2647 }
1e422769 2648
a0d0e21e 2649 if (flags & G_DISCARD) {
3280af22 2650 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2651 retval = 0;
2652 FREETMPS;
2653 LEAVE;
2654 }
533c011a 2655 PL_op = oldop;
a0d0e21e
LW
2656 return retval;
2657}
2658
6e72f9df 2659/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2660
954c1994
GS
2661/*
2662=for apidoc p||eval_sv
2663
be064c4a
DM
2664Tells Perl to C<eval> the string in the SV. It supports the same flags
2665as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2666
2667=cut
2668*/
2669
a0d0e21e 2670I32
864dbfa3 2671Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2672
8ac85365 2673 /* See G_* flags in cop.h */
a0d0e21e 2674{
97aff369 2675 dVAR;
924508f0 2676 dSP;
a0d0e21e 2677 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2678 VOL I32 oldmark = SP - PL_stack_base;
2679 VOL I32 retval = 0;
6224f72b 2680 int ret;
c4420975 2681 OP* const oldop = PL_op;
db36c5a1 2682 dJMPENV;
84902520 2683
7918f24d
NC
2684 PERL_ARGS_ASSERT_EVAL_SV;
2685
4633a7c4
LW
2686 if (flags & G_DISCARD) {
2687 ENTER;
2688 SAVETMPS;
2689 }
2690
462e5cf6 2691 SAVEOP();
533c011a
NIS
2692 PL_op = (OP*)&myop;
2693 Zero(PL_op, 1, UNOP);
3280af22
NIS
2694 EXTEND(PL_stack_sp, 1);
2695 *++PL_stack_sp = sv;
79072805 2696
4633a7c4
LW
2697 if (!(flags & G_NOARGS))
2698 myop.op_flags = OPf_STACKED;
5f66b61c 2699 myop.op_next = NULL;
6e72f9df 2700 myop.op_type = OP_ENTEREVAL;
4f911530 2701 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2702 if (flags & G_KEEPERR)
2703 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2704
dedbcade
DM
2705 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2706 * before a PUSHEVAL, which corrupts the stack after a croak */
2707 TAINT_PROPER("eval_sv()");
2708
14dd3ad8 2709 JMPENV_PUSH(ret);
6224f72b
GS
2710 switch (ret) {
2711 case 0:
14dd3ad8 2712 redo_body:
2ba65d5f
DM
2713 if (PL_op == (OP*)(&myop)) {
2714 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2715 if (!PL_op)
2716 goto fail; /* failed in compilation */
2717 }
4aca2f62 2718 CALLRUNOPS(aTHX);
312caa8e 2719 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2720 if (!(flags & G_KEEPERR)) {
ab69dbc2 2721 CLEAR_ERRSV();
8433848b 2722 }
4633a7c4 2723 break;
6224f72b 2724 case 1:
f86702cc 2725 STATUS_ALL_FAILURE;
4633a7c4 2726 /* FALL THROUGH */
6224f72b 2727 case 2:
4633a7c4 2728 /* my_exit() was called */
3280af22 2729 PL_curstash = PL_defstash;
4633a7c4 2730 FREETMPS;
14dd3ad8 2731 JMPENV_POP;
f86702cc 2732 my_exit_jump();
4633a7c4 2733 /* NOTREACHED */
6224f72b 2734 case 3:
3280af22 2735 if (PL_restartop) {
febb3a6d 2736 PL_restartjmpenv = NULL;
533c011a 2737 PL_op = PL_restartop;
3280af22 2738 PL_restartop = 0;
312caa8e 2739 goto redo_body;
4633a7c4 2740 }
4aca2f62 2741 fail:
3280af22 2742 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2743 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2744 retval = 0;
2745 else {
2746 retval = 1;
3280af22 2747 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2748 }
312caa8e 2749 break;
4633a7c4
LW
2750 }
2751
14dd3ad8 2752 JMPENV_POP;
4633a7c4 2753 if (flags & G_DISCARD) {
3280af22 2754 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2755 retval = 0;
2756 FREETMPS;
2757 LEAVE;
2758 }
533c011a 2759 PL_op = oldop;
4633a7c4
LW
2760 return retval;
2761}
2762
954c1994
GS
2763/*
2764=for apidoc p||eval_pv
2765
2766Tells Perl to C<eval> the given string and return an SV* result.
2767
2768=cut
2769*/
2770
137443ea 2771SV*
864dbfa3 2772Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2773{
97aff369 2774 dVAR;
137443ea
PP
2775 dSP;
2776 SV* sv = newSVpv(p, 0);
2777
7918f24d
NC
2778 PERL_ARGS_ASSERT_EVAL_PV;
2779
864dbfa3 2780 eval_sv(sv, G_SCALAR);
137443ea
PP
2781 SvREFCNT_dec(sv);
2782
2783 SPAGAIN;
2784 sv = POPs;
2785 PUTBACK;
2786
2d8e6c8d 2787 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2788 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2789 }
137443ea
PP
2790
2791 return sv;
2792}
2793
4633a7c4
LW
2794/* Require a module. */
2795
954c1994 2796/*
ccfc67b7
JH
2797=head1 Embedding Functions
2798
954c1994
GS
2799=for apidoc p||require_pv
2800
7d3fb230
BS
2801Tells Perl to C<require> the file named by the string argument. It is
2802analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2803implemented that way; consider using load_module instead.
954c1994 2804
7d3fb230 2805=cut */
954c1994 2806
4633a7c4 2807void
864dbfa3 2808Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2809{
97aff369 2810 dVAR;
d3acc0f7 2811 dSP;
97aff369 2812 SV* sv;
7918f24d
NC
2813
2814 PERL_ARGS_ASSERT_REQUIRE_PV;
2815
e788e7d3 2816 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2817 PUTBACK;
be41e5d9
NC
2818 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2819 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2820 SPAGAIN;
2821 POPSTACK;
79072805
LW
2822}
2823
76e3520e 2824STATIC void
e1ec3a88 2825S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2826{
ab821d7f 2827 /* This message really ought to be max 23 lines.
75c72d73 2828 * Removed -h because the user already knows that option. Others? */
fb73857a 2829
1566c39d
NC
2830 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2831 minimum of 509 character string literals. */
27da23d5 2832 static const char * const usage_msg[] = {
1566c39d
NC
2833" -0[octal] specify record separator (\\0, if no argument)\n"
2834" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2835" -C[number/list] enables the listed Unicode features\n"
2836" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2837" -d[:debugger] run program under debugger\n"
2838" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2839" -e program one line of program (several -e's allowed, omit programfile)\n"
2840" -E program like -e, but enables all optional features\n"
2841" -f don't do $sitelib/sitecustomize.pl at startup\n"
2842" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2843" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2844" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2845" -l[octal] enable line ending processing, specifies line terminator\n"
2846" -[mM][-]module execute \"use/no module...\" before executing program\n"
2847" -n assume \"while (<>) { ... }\" loop around program\n"
2848" -p assume loop like -n but print line also, like sed\n"
2849" -s enable rudimentary parsing for switches after programfile\n"
2850" -S look for programfile using PATH environment variable\n",
2851" -t enable tainting warnings\n"
2852" -T enable tainting checks\n"
2853" -u dump core after parsing program\n"
2854" -U allow unsafe operations\n"
2855" -v print version, patchlevel and license\n"
2856" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2857" -w enable many useful warnings\n"
1566c39d
NC
2858" -W enable all warnings\n"
2859" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2860" -X disable all warnings\n"
2861" \n"
2862"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2863NULL
2864};
27da23d5 2865 const char * const *p = usage_msg;
1566c39d 2866 PerlIO *out = PerlIO_stdout();
fb73857a 2867
7918f24d
NC
2868 PERL_ARGS_ASSERT_USAGE;
2869
1566c39d
NC
2870 PerlIO_printf(out,
2871 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2872 name);
fb73857a 2873 while (*p)
1566c39d 2874 PerlIO_puts(out, *p++);
4633a7c4
LW
2875}
2876
b4ab917c
DM
2877/* convert a string of -D options (or digits) into an int.
2878 * sets *s to point to the char after the options */
2879
2880#ifdef DEBUGGING
2881int
e1ec3a88 2882Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2883{
27da23d5 2884 static const char * const usage_msgd[] = {
651b8f1a
NC
2885 " Debugging flag values: (see also -d)\n"
2886 " p Tokenizing and parsing (with v, displays parse stack)\n"
2887 " s Stack snapshots (with v, displays all stacks)\n"
2888 " l Context (loop) stack processing\n"
2889 " t Trace execution\n"
2890 " o Method and overloading resolution\n",
2891 " c String/numeric conversions\n"
2892 " P Print profiling info, source file input state\n"
2893 " m Memory and SV allocation\n"
2894 " f Format processing\n"
2895 " r Regular expression parsing and execution\n"
2896 " x Syntax tree dump\n",
2897 " u Tainting checks\n"
2898 " H Hash dump -- usurps values()\n"
2899 " X Scratchpad allocation\n"
2900 " D Cleaning up\n"
2901 " T Tokenising\n"
2902 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2903 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2904 " v Verbose: use in conjunction with other flags\n"
2905 " C Copy On Write\n"
2906 " A Consistency checks on internal structures\n"
2907 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2908 " M trace smart match resolution\n"
2909 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2910 NULL
2911 };
b4ab917c 2912 int i = 0;
7918f24d
NC
2913
2914 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2915
b4ab917c
DM
2916 if (isALPHA(**s)) {
2917 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2918 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2919
2920 for (; isALNUM(**s); (*s)++) {
c4420975 2921 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2922 if (d)
2923 i |= 1 << (d - debopts);
2924 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2925 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2926 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2927 }
2928 }
e6e64d9b 2929 else if (isDIGIT(**s)) {
b4ab917c
DM
2930 i = atoi(*s);
2931 for (; isALNUM(**s); (*s)++) ;
2932 }
ddcf8bc1 2933 else if (givehelp) {
06e869a4 2934 const char *const *p = usage_msgd;
651b8f1a 2935 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2936 }
b4ab917c
DM
2937# ifdef EBCDIC
2938 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2939 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2940 "-Dp not implemented on this platform\n");
2941# endif
2942 return i;
2943}
2944#endif
2945
79072805
LW
2946/* This routine handles any switches that can be given during run */
2947
c7030b81
NC
2948const char *
2949Perl_moreswitches(pTHX_ const char *s)
79072805 2950{
27da23d5 2951 dVAR;
84c133a0 2952 UV rschar;
0544e6df 2953 const char option = *s; /* used to remember option in -m/-M code */
79072805 2954
7918f24d
NC
2955 PERL_ARGS_ASSERT_MORESWITCHES;
2956
79072805
LW
2957 switch (*s) {
2958 case '0':
a863c7d1 2959 {
f2095865 2960 I32 flags = 0;
a3b680e6 2961 STRLEN numlen;
f2095865
JH
2962
2963 SvREFCNT_dec(PL_rs);
2964 if (s[1] == 'x' && s[2]) {
a3b680e6 2965 const char *e = s+=2;
f2095865
JH
2966 U8 *tmps;
2967
a3b680e6
AL
2968 while (*e)
2969 e++;
f2095865
JH
2970 numlen = e - s;
2971 flags = PERL_SCAN_SILENT_ILLDIGIT;
2972 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2973 if (s + numlen < e) {
2974 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2975 numlen = 0;
2976 s--;
2977 }
396482e1 2978 PL_rs = newSVpvs("");
c5661c80 2979 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2980 tmps = (U8*)SvPVX(PL_rs);
2981 uvchr_to_utf8(tmps, rschar);
2982 SvCUR_set(PL_rs, UNISKIP(rschar));
2983 SvUTF8_on(PL_rs);
2984 }
2985 else {
2986 numlen = 4;
2987 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2988 if (rschar & ~((U8)~0))
2989 PL_rs = &PL_sv_undef;
2990 else if (!rschar && numlen >= 2)
396482e1 2991 PL_rs = newSVpvs("");
f2095865
JH
2992 else {
2993 char ch = (char)rschar;
2994 PL_rs = newSVpvn(&ch, 1);
2995 }
2996 }
64ace3f8 2997 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2998 return s + numlen;
a863c7d1 2999 }
46487f74 3000 case 'C':
a05d7ebb 3001 s++;
dd374669 3002 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3003 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3004 PL_utf8cache = -1;
46487f74 3005 return s;
2304df62 3006 case 'F':
3280af22 3007 PL_minus_F = TRUE;
ebce5377
RGS
3008 PL_splitstr = ++s;
3009 while (*s && !isSPACE(*s)) ++s;
e49e380e 3010 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3011 return s;
79072805 3012 case 'a':
3280af22 3013 PL_minus_a = TRUE;
79072805
LW
3014 s++;
3015 return s;
3016 case 'c':
3280af22 3017 PL_minus_c = TRUE;
79072805
LW
3018 s++;
3019 return s;
3020 case 'd':
f20b2998 3021 forbid_setid('d', FALSE);
4633a7c4 3022 s++;
2cbb2ee1
RGS
3023
3024 /* -dt indicates to the debugger that threads will be used */
3025 if (*s == 't' && !isALNUM(s[1])) {
3026 ++s;
3027 my_setenv("PERL5DB_THREADED", "1");
3028 }
3029
70c94a19
RR
3030 /* The following permits -d:Mod to accepts arguments following an =
3031 in the fashion that -MSome::Mod does. */
3032 if (*s == ':' || *s == '=') {
f85893a1
NC
3033 const char *start = ++s;
3034 const char *const end = s + strlen(s);
396482e1 3035 SV * const sv = newSVpvs("use Devel::");
f85893a1 3036
70c94a19
RR
3037 /* We now allow -d:Module=Foo,Bar */
3038 while(isALNUM(*s) || *s==':') ++s;
3039 if (*s != '=')
f85893a1 3040 sv_catpvn(sv, start, end - start);
70c94a19
RR
3041 else {
3042 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3043 /* Don't use NUL as q// delimiter here, this string goes in the
3044 * environment. */
3045 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3046 }
f85893a1 3047 s = end;
184f32ec 3048 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3049 SvREFCNT_dec(sv);
4633a7c4 3050 }
ed094faf 3051 if (!PL_perldb) {
3280af22 3052 PL_perldb = PERLDB_ALL;
a0d0e21e 3053 init_debugger();
ed094faf 3054 }
79072805
LW
3055 return s;
3056 case 'D':
0453d815 3057 {
79072805 3058#ifdef DEBUGGING
f20b2998 3059 forbid_setid('D', FALSE);
b4ab917c 3060 s++;
dd374669 3061 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3062#else /* !DEBUGGING */
0453d815 3063 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3064 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3065 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3066 for (s++; isALNUM(*s); s++) ;
79072805 3067#endif
79072805 3068 return s;
0453d815 3069 }
4633a7c4 3070 case 'h':
ac27b0f5 3071 usage(PL_origargv[0]);
7ca617d0 3072 my_exit(0);
79072805 3073 case 'i':
43c5f42d 3074 Safefree(PL_inplace);
c030f24b
GH
3075#if defined(__CYGWIN__) /* do backup extension automagically */
3076 if (*(s+1) == '\0') {
c86a4f2e 3077 PL_inplace = savepvs(".bak");
c030f24b
GH
3078 return s+1;
3079 }
3080#endif /* __CYGWIN__ */
5ef5d758 3081 {
d4c19fe8 3082 const char * const start = ++s;
5ef5d758
NC
3083 while (*s && !isSPACE(*s))
3084 ++s;
3085
3086 PL_inplace = savepvn(start, s - start);
3087 }
7b8d334a 3088 if (*s) {
5ef5d758 3089 ++s;
7b8d334a 3090 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3091 s++;
7b8d334a 3092 }
fb73857a 3093 return s;
4e49a025 3094 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3095 forbid_setid('I', FALSE);
fb73857a
PP
3096 ++s;
3097 while (*s && isSPACE(*s))
3098 ++s;
3099 if (*s) {
c7030b81 3100 const char *e, *p;
0df16ed7
GS
3101 p = s;
3102 /* ignore trailing spaces (possibly followed by other switches) */
3103 do {
3104 for (e = p; *e && !isSPACE(*e); e++) ;
3105 p = e;
3106 while (isSPACE(*p))
3107 p++;
3108 } while (*p && *p != '-');
55b4bc1c 3109 incpush(s, e-s,
e28f3139 3110 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3111 s = p;
3112 if (*s == '-')
3113 s++;
79072805
LW
3114 }
3115 else
a67e862a 3116 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3117 return s;
79072805 3118 case 'l':
3280af22 3119 PL_minus_l = TRUE;
79072805 3120 s++;
7889fe52
NIS
3121 if (PL_ors_sv) {
3122 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3123 PL_ors_sv = NULL;
7889fe52 3124 }
79072805 3125 if (isDIGIT(*s)) {
53305cf1 3126 I32 flags = 0;
a3b680e6 3127 STRLEN numlen;
396482e1 3128 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3129 numlen = 3 + (*s == '0');
3130 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3131 s += numlen;
3132 }
3133 else {
8bfdd7d9 3134 if (RsPARA(PL_rs)) {
396482e1 3135 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3136 }
3137 else {
8bfdd7d9 3138 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3139 }
79072805
LW
3140 }
3141 return s;
1a30305b 3142 case 'M':
f20b2998 3143 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3144 /* FALL THROUGH */
3145 case 'm':
f20b2998 3146 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3147 if (*++s) {
c7030b81 3148 const char *start;
b64cb68c 3149 const char *end;
11343788 3150 SV *sv;
e1ec3a88 3151 const char *use = "use ";
0544e6df 3152 bool colon = FALSE;
a5f75d66 3153 /* -M-foo == 'no foo' */
d0043bd1
NC
3154 /* Leading space on " no " is deliberate, to make both
3155 possibilities the same length. */
3156 if (*s == '-') { use = " no "; ++s; }
3157 sv = newSVpvn(use,4);
a5f75d66 3158 start = s;
1a30305b 3159 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3160 while(isALNUM(*s) || *s==':') {
3161 if( *s++ == ':' ) {
3162 if( *s == ':' )
3163 s++;
3164 else
3165 colon = TRUE;
3166 }
3167 }
3168 if (s == start)
3169 Perl_croak(aTHX_ "Module name required with -%c option",
3170 option);
3171 if (colon)
3172 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3173 "contains single ':'",
63da6837 3174 (int)(s - start), start, option);
b64cb68c 3175 end = s + strlen(s);
c07a80fd 3176 if (*s != '=') {
b64cb68c 3177 sv_catpvn(sv, start, end - start);
0544e6df 3178 if (option == 'm') {
c07a80fd 3179 if (*s != '\0')
cea2e8a9 3180 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3181 sv_catpvs( sv, " ()");
c07a80fd
PP
3182 }
3183 } else {
11343788 3184 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3185 /* Use NUL as q''-delimiter. */
3186 sv_catpvs(sv, " split(/,/,q\0");
3187 ++s;
3188 sv_catpvn(sv, s, end - s);
396482e1 3189 sv_catpvs(sv, "\0)");
c07a80fd 3190 }
b64cb68c 3191 s = end;
29a861e7 3192 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3193 }
3194 else
0544e6df 3195 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3196 return s;
79072805 3197 case 'n':
3280af22 3198 PL_minus_n = TRUE;
79072805
LW
3199 s++;
3200 return s;
3201 case 'p':
3280af22 3202 PL_minus_p = TRUE;
79072805
LW
3203 s++;
3204 return s;
3205 case 's':
f20b2998 3206 forbid_setid('s', FALSE);
3280af22 3207 PL_doswitches = TRUE;
79072805
LW
3208 s++;
3209 return s;
6537fe72
MS
3210 case 't':
3211 if (!PL_tainting)
22f7c9c9 3212 TOO_LATE_FOR('t');
6537fe72
MS
3213 s++;
3214 return s;
463ee0b2 3215 case 'T':
3280af22 3216 if (!PL_tainting)
22f7c9c9 3217 TOO_LATE_FOR('T');
463ee0b2
LW
3218 s++;
3219 return s;
79072805 3220 case 'u':
3280af22 3221 PL_do_undump = TRUE;
79072805
LW
3222 s++;
3223 return s;
3224 case 'U':
3280af22 3225 PL_unsafe = TRUE;
79072805
LW
3226 s++;
3227 return s;
3228 case 'v':
d7aa5382 3229 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3230 upg_version(PL_patchlevel, TRUE);
8e9464f1 3231#if !defined(DGUX)
46807d8e
YO
3232 {
3233 SV* level= vstringify(PL_patchlevel);
3234#ifdef PERL_PATCHNUM
23d483e2
NC
3235# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3236 SV *num = newSVpvs(PERL_PATCHNUM "*");
3237# else
3238 SV *num = newSVpvs(PERL_PATCHNUM);
3239# endif
46807d8e
YO
3240
3241 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3242 SvREFCNT_dec(level);
3243 level= num;
3244 } else {
d0a9311f 3245 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3246 SvREFCNT_dec(num);
3247 }
3248 #endif
3249 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3250 "\nThis is perl " STRINGIFY(PERL_REVISION)
3251 ", version " STRINGIFY(PERL_VERSION)
3252 ", subversion " STRINGIFY(PERL_SUBVERSION)
3253 " (%"SVf") built for " ARCHNAME, level
3254 );
46807d8e
YO
3255 SvREFCNT_dec(level);
3256 }
8e9464f1
JH
3257#else /* DGUX */
3258/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3259 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3260 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3261 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3262 PerlIO_printf(PerlIO_stdout(),
3263 Perl_form(aTHX_ " built under %s at %s %s\n",
3264 OSNAME, __DATE__, __TIME__));
3265 PerlIO_printf(PerlIO_stdout(),
3266 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3267 OSVERS));
8e9464f1 3268#endif /* !DGUX */
fb73857a
PP
3269#if defined(LOCAL_PATCH_COUNT)
3270 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3271 PerlIO_printf(PerlIO_stdout(),
3272 "\n(with %d registered patch%s, "
3273 "see perl -V for more detail)",
bb7a0f54 3274 LOCAL_PATCH_COUNT,
b0e47665 3275 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3276#endif
1a30305b 3277
b0e47665 3278 PerlIO_printf(PerlIO_stdout(),
32709fdf 3279 "\n\nCopyright 1987-2010, Larry Wall\n");
79072805 3280#ifdef MSDOS
b0e47665
GS
3281 PerlIO_printf(PerlIO_stdout(),
3282 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3283#endif
3284#ifdef DJGPP
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3287 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3288#endif
79072805 3289#ifdef OS2
b0e47665
GS
3290 PerlIO_printf(PerlIO_stdout(),
3291 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3292 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3293#endif
79072805 3294#ifdef atarist
b0e47665
GS
3295 PerlIO_printf(PerlIO_stdout(),
3296 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3297#endif
a3f9223b 3298#ifdef __BEOS__
b0e47665
GS
3299 PerlIO_printf(PerlIO_stdout(),
3300 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3301#endif
1d84e8df 3302#ifdef MPE
b0e47665 3303 PerlIO_printf(PerlIO_stdout(),
e583a879 3304 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3305#endif
9d116dd7 3306#ifdef OEMVS
b0e47665
GS
3307 PerlIO_printf(PerlIO_stdout(),
3308 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3309#endif
495c5fdc 3310#ifdef __VOS__
b0e47665 3311 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3312 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3313#endif
092bebab 3314#ifdef __OPEN_VM
b0e47665
GS
3315 PerlIO_printf(PerlIO_stdout(),
3316 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3317#endif
a1a0e61e 3318#ifdef POSIX_BC
b0e47665
GS
3319 PerlIO_printf(PerlIO_stdout(),
3320 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3321#endif
f83d2536 3322#ifdef EPOC
b0e47665 3323 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3324 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3325#endif
e1caacb4 3326#ifdef UNDER_CE
b475b3e6
JH
3327 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3328 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3329 wce_hitreturn();
3330#endif
a0fd4948 3331#ifdef __SYMBIAN32__
27da23d5
JH
3332 PerlIO_printf(PerlIO_stdout(),
3333 "Symbian port by Nokia, 2004-2005\n");
3334#endif
baed7233
DL
3335#ifdef BINARY_BUILD_NOTICE
3336 BINARY_BUILD_NOTICE;
3337#endif
b0e47665
GS
3338 PerlIO_printf(PerlIO_stdout(),
3339 "\n\
79072805 3340Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3341GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3342Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3343this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3344Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3345 my_exit(0);
79072805 3346 case 'w':
b2e5e6ba 3347 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3348 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3349 }
599cee73
PM
3350 s++;
3351 return s;
3352 case 'W':
ac27b0f5 3353 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3354 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3355 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3356 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3357 s++;
3358 return s;
3359 case 'X':
ac27b0f5 3360 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3361 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3362 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3363 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3364 s++;
3365 return s;
a0d0e21e 3366 case '*':
79072805 3367 case ' ':
d3133c89
NC
3368 while( *s == ' ' )
3369 ++s;
3370 if (s[0] == '-') /* Additional switches on #! line. */
3371 return s+1;
79072805 3372 break;
a0d0e21e 3373 case '-':
79072805 3374 case 0:
51882d45 3375#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3376 case '\r':
3377#endif
79072805
LW
3378 case '\n':
3379 case '\t':
3380 break;
aa689395
PP
3381#ifdef ALTERNATE_SHEBANG
3382 case 'S': /* OS/2 needs -S on "extproc" line. */
3383 break;
3384#endif
79072805 3385 default:
cea2e8a9 3386 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3387 }
bd61b366 3388 return NULL;
79072805
LW
3389}
3390
3391/* compliments of Tom Christiansen */
3392
3393/* unexec() can be found in the Gnu emacs distribution */
ee580363 3394/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3395
3396void
864dbfa3 3397Perl_my_unexec(pTHX)
79072805 3398{
b37c2d43 3399 PERL_UNUSED_CONTEXT;
79072805 3400#ifdef UNEXEC
b37c2d43
AL
3401 SV * prog = newSVpv(BIN_EXP, 0);
3402 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3403 int status = 1;
79072805
LW
3404 extern int etext;
3405
396482e1 3406 sv_catpvs(prog, "/perl");
396482e1 3407 sv_catpvs(file, ".perldump");
79072805 3408
ee580363
GS
3409 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3410 /* unexec prints msg to stderr in case of failure */
6ad3d225 3411 PerlProc_exit(status);
79072805 3412#else
a5f75d66
AD
3413# ifdef VMS
3414# include <lib$routines.h>
3415 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3416# elif defined(WIN32) || defined(__CYGWIN__)
3417 Perl_croak(aTHX_ "dump is not supported");
aa689395 3418# else
79072805 3419 ABORT(); /* for use with undump */
aa689395 3420# endif
a5f75d66 3421#endif
79072805
LW
3422}
3423
cb68f92d
GS
3424/* initialize curinterp */
3425STATIC void
cea2e8a9 3426S_init_interp(pTHX)
cb68f92d 3427{
97aff369 3428 dVAR;
acfe0abc
GS
3429#ifdef MULTIPLICITY
3430# define PERLVAR(var,type)
3431# define PERLVARA(var,n,type)
3432# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3433# define PERLVARI(var,type,init) aTHX->var = init;
3434# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3435# else
acfe0abc
GS
3436# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3437# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3438# endif
acfe0abc 3439# include "intrpvar.h"
acfe0abc
GS
3440# undef PERLVAR
3441# undef PERLVARA
3442# undef PERLVARI
3443# undef PERLVARIC
3444#else
3445# define PERLVAR(var,type)
3446# define PERLVARA(var,n,type)
3447# define PERLVARI(var,type,init) PL_##var = init;
3448# define PERLVARIC(var,type,init) PL_##var = init;
3449# include "intrpvar.h"
acfe0abc
GS
3450# undef PERLVAR
3451# undef PERLVARA
3452# undef PERLVARI
3453# undef PERLVARIC
cb68f92d
GS
3454#endif
3455
46ab3289
NC
3456 /* As these are inside a structure, PERLVARI isn't capable of initialising
3457 them */
6c3f0a89
NC
3458 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3459 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3460}
3461
76e3520e 3462STATIC void
cea2e8a9 3463S_init_main_stash(pTHX)
79072805 3464{
97aff369 3465 dVAR;
463ee0b2 3466 GV *gv;
6e72f9df 3467
3280af22 3468 PL_curstash = PL_defstash = newHV();
23579a14
NC
3469 /* We know that the string "main" will be in the global shared string
3470 table, so it's a small saving to use it rather than allocate another
3471 8 bytes. */
18916d0d 3472 PL_curstname = newSVpvs_share("main");
fafc274c 3473 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3474 /* If we hadn't caused another reference to "main" to be in the shared
3475 string table above, then it would be worth reordering these two,
3476 because otherwise all we do is delete "main" from it as a consequence
3477 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3478 SvREFCNT_dec(GvHV(gv));
23579a14 3479 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3480 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3481 SvREADONLY_on(gv);
fafc274c
NC
3482 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3483 SVt_PVAV)));
5a5094bd 3484 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3485 GvMULTI_on(PL_incgv);
fafc274c 3486 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3487 GvMULTI_on(PL_hintgv);
fafc274c 3488 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3489 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3490 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3491 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3492 GvMULTI_on(PL_errgv);
fafc274c 3493 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3494 GvMULTI_on(PL_replgv);
cea2e8a9 3495 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC