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CommitLineData
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
010d7370
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5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
6 * by Larry Wall 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 *
8d063cd8
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11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
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17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
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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
43c0c913
NC
27#ifdef PERL_IS_MINIPERL
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
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39#endif
40
df5cef82 41/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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42#ifdef I_UNISTD
43#include <unistd.h>
44#endif
a0d0e21e 45
2aa47728
NC
46#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
47# ifdef I_SYS_WAIT
48# include <sys/wait.h>
49# endif
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
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61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 80/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
81# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
82#else
ec2019ad 83/* Drop almost everything */
cc69b689 84# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 85#endif
8d063cd8 86
d6f07c05
AL
87#define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
139d0ce6 89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
90 if (PL_op) \
91 CALLRUNOPS(aTHX);
92
93#define CALL_LIST_BODY(cv) \
94 PUSHMARK(PL_stack_sp); \
ad64d0ec 95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 96
e6827a76 97static void
daa7d858 98S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 99{
27da23d5 100 dVAR;
e6827a76
NC
101 if (!PL_curinterp) {
102 PERL_SET_INTERP(my_perl);
3db8f154 103#if defined(USE_ITHREADS)
e6827a76
NC
104 INIT_THREADS;
105 ALLOC_THREAD_KEY;
106 PERL_SET_THX(my_perl);
107 OP_REFCNT_INIT;
71ad1b0c 108 HINTS_REFCNT_INIT;
e6827a76 109 MUTEX_INIT(&PL_dollarzero_mutex);
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110 MUTEX_INIT(&PL_my_ctx_mutex);
111# endif
e6827a76 112 }
c0bce9aa
NC
113#if defined(USE_ITHREADS)
114 else
115#else
116 /* This always happens for non-ithreads */
117#endif
118 {
e6827a76
NC
119 PERL_SET_THX(my_perl);
120 }
121}
06d86050 122
cbec8ebe
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123
124/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
125
126void
127Perl_sys_init(int* argc, char*** argv)
128{
4fc0badb 129 dVAR;
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130
131 PERL_ARGS_ASSERT_SYS_INIT;
132
cbec8ebe
DM
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_SYS_INIT_BODY(argc, argv);
136}
137
138void
139Perl_sys_init3(int* argc, char*** argv, char*** env)
140{
4fc0badb 141 dVAR;
7918f24d
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142
143 PERL_ARGS_ASSERT_SYS_INIT3;
144
cbec8ebe
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145 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
146 PERL_UNUSED_ARG(argv);
147 PERL_UNUSED_ARG(env);
148 PERL_SYS_INIT3_BODY(argc, argv, env);
149}
150
151void
d0820ef1 152Perl_sys_term()
cbec8ebe 153{
4fc0badb 154 dVAR;
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DM
155 if (!PL_veto_cleanup) {
156 PERL_SYS_TERM_BODY();
157 }
cbec8ebe
DM
158}
159
160
32e30700
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161#ifdef PERL_IMPLICIT_SYS
162PerlInterpreter *
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163perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
164 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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GS
165 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
166 struct IPerlDir* ipD, struct IPerlSock* ipS,
167 struct IPerlProc* ipP)
168{
169 PerlInterpreter *my_perl;
7918f24d
NC
170
171 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
172
9f653bb5 173 /* Newx() needs interpreter, so call malloc() instead */
32e30700 174 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 175 S_init_tls_and_interp(my_perl);
32e30700
GS
176 Zero(my_perl, 1, PerlInterpreter);
177 PL_Mem = ipM;
7766f137
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178 PL_MemShared = ipMS;
179 PL_MemParse = ipMP;
32e30700
GS
180 PL_Env = ipE;
181 PL_StdIO = ipStd;
182 PL_LIO = ipLIO;
183 PL_Dir = ipD;
184 PL_Sock = ipS;
185 PL_Proc = ipP;
7cb608b5 186 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 187
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188 return my_perl;
189}
190#else
954c1994
GS
191
192/*
ccfc67b7
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193=head1 Embedding Functions
194
954c1994
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195=for apidoc perl_alloc
196
197Allocates a new Perl interpreter. See L<perlembed>.
198
199=cut
200*/
201
93a17b20 202PerlInterpreter *
cea2e8a9 203perl_alloc(void)
79072805 204{
cea2e8a9 205 PerlInterpreter *my_perl;
79072805 206
9f653bb5 207 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 208 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 209
e6827a76 210 S_init_tls_and_interp(my_perl);
7cb608b5 211#ifndef PERL_TRACK_MEMPOOL
07409e01 212 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
213#else
214 Zero(my_perl, 1, PerlInterpreter);
215 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
216 return my_perl;
217#endif
79072805 218}
32e30700 219#endif /* PERL_IMPLICIT_SYS */
79072805 220
954c1994
GS
221/*
222=for apidoc perl_construct
223
224Initializes a new Perl interpreter. See L<perlembed>.
225
226=cut
227*/
228
79072805 229void
0cb96387 230perl_construct(pTHXx)
79072805 231{
27da23d5 232 dVAR;
7918f24d
NC
233
234 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
235
8990e307 236#ifdef MULTIPLICITY
54aff467 237 init_interp();
ac27b0f5 238 PL_perl_destruct_level = 1;
54aff467 239#else
7918f24d 240 PERL_UNUSED_ARG(my_perl);
54aff467
GS
241 if (PL_perl_destruct_level > 0)
242 init_interp();
243#endif
34caed6d
DM
244 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
245
34caed6d
DM
246 /* set read-only and try to insure than we wont see REFCNT==0
247 very often */
248
249 SvREADONLY_on(&PL_sv_undef);
250 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
251
252 sv_setpv(&PL_sv_no,PL_No);
253 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
254 of caching the numeric forms. However, as &PL_sv_no doesn't contain
255 a string that is a valid numer, we have to turn the public flags by
256 hand: */
34caed6d 257 SvNV(&PL_sv_no);
c1939273 258 SvIV(&PL_sv_no);
a43d94f2
NC
259 SvIOK_on(&PL_sv_no);
260 SvNOK_on(&PL_sv_no);
34caed6d
DM
261 SvREADONLY_on(&PL_sv_no);
262 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
263
264 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 265 SvNV(&PL_sv_yes);
c1939273 266 SvIV(&PL_sv_yes);
34caed6d
DM
267 SvREADONLY_on(&PL_sv_yes);
268 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
269
270 SvREADONLY_on(&PL_sv_placeholder);
271 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
272
273 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 274#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 275 PL_pidstatus = newHV();
ca0c25f6 276#endif
79072805 277
396482e1 278 PL_rs = newSVpvs("\n");
dc92893f 279
cea2e8a9 280 init_stacks();
79072805 281
748a9306 282 init_ids();
a5f75d66 283
312caa8e 284 JMPENV_BOOTSTRAP;
f86702cc
PP
285 STATUS_ALL_SUCCESS;
286
0672f40e 287 init_i18nl10n(1);
36477c24 288 SET_NUMERIC_STANDARD();
0b5b802d 289
ab821d7f 290#if defined(LOCAL_PATCH_COUNT)
3280af22 291 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
292#endif
293
52853b95
GS
294#ifdef HAVE_INTERP_INTERN
295 sys_intern_init();
296#endif
297
3a1ee7e8 298 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 299
3280af22
NIS
300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 302 PL_errors = newSVpvs("");
76f68e9b
MHM
303 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
304 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
305 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 306#ifdef USE_ITHREADS
402d2eb1
NC
307 /* First entry is a list of empty elements. It needs to be initialised
308 else all hell breaks loose in S_find_uninit_var(). */
309 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 310 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 311#endif
e5dd39fc 312#ifdef USE_REENTRANT_API
59bd0823 313 Perl_reentrant_init(aTHX);
e5dd39fc 314#endif
3d47000e
AB
315
316 /* Note that strtab is a rather special HV. Assumptions are made
317 about not iterating on it, and not adding tie magic to it.
318 It is properly deallocated in perl_destruct() */
319 PL_strtab = newHV();
320
3d47000e
AB
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
323
0631ea03
AB
324#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
325 _dyld_lookup_and_bind
326 ("__environ", (unsigned long *) &environ_pointer, NULL);
327#endif /* environ */
328
2f42fcb0
JH
329#ifndef PERL_MICRO
330# ifdef USE_ENVIRON_ARRAY
0631ea03 331 PL_origenviron = environ;
2f42fcb0 332# endif
0631ea03
AB
333#endif
334
5311654c 335 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 336 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
337 * BeOS has those, but returns the wrong value.
338 * The HZ if not originally defined has been by now
339 * been defined as CLK_TCK, if available. */
dbc1d986 340#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
341 PL_clocktick = sysconf(_SC_CLK_TCK);
342 if (PL_clocktick <= 0)
343#endif
344 PL_clocktick = HZ;
345
081fc587
AB
346 PL_stashcache = newHV();
347
e8e3635e 348 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 349 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 350
27da23d5
JH
351#ifdef HAS_MMAP
352 if (!PL_mmap_page_size) {
353#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
354 {
355 SETERRNO(0, SS_NORMAL);
356# ifdef _SC_PAGESIZE
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
358# else
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
360# endif
361 if ((long) PL_mmap_page_size < 0) {
362 if (errno) {
44f8325f 363 SV * const error = ERRSV;
d4c19fe8 364 SvUPGRADE(error, SVt_PV);
0510663f 365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
366 }
367 else
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
369 }
370 }
371#else
372# ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
374# else
375# if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
377# endif
378# endif
379#endif
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
383 }
384#endif /* HAS_MMAP */
385
386#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
391#endif
392
7d113631
NC
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
394
a3e6e81e 395 PL_registered_mros = newHV();
9e169432
NC
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
a3e6e81e 398
8990e307 399 ENTER;
79072805
LW
400}
401
954c1994 402/*
62375a60
NIS
403=for apidoc nothreadhook
404
405Stub that provides thread hook for perl_destruct when there are
406no threads.
407
408=cut
409*/
410
411int
4e9e3734 412Perl_nothreadhook(pTHX)
62375a60 413{
96a5add6 414 PERL_UNUSED_CONTEXT;
62375a60
NIS
415 return 0;
416}
417
41e4abd8
NC
418#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419void
420Perl_dump_sv_child(pTHX_ SV *sv)
421{
422 ssize_t got;
bf357333
NC
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
425 union control_un control;
426 struct msghdr msg;
808ad2d0 427 struct iovec vec[2];
bf357333 428 struct cmsghdr *cmptr;
808ad2d0
NC
429 int returned_errno;
430 unsigned char buffer[256];
41e4abd8 431
7918f24d
NC
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433
bf357333 434 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
435 return;
436
437 PerlIO_flush(Perl_debug_log);
438
bf357333
NC
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 443 be open, the wait would be forever.) */
bf357333
NC
444
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
448 msg.msg_name = NULL;
449 msg.msg_namelen = 0;
450 msg.msg_iov = vec;
808ad2d0 451 msg.msg_iovlen = 1;
bf357333
NC
452
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
458
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
462
463 if(got < 0) {
bf357333 464 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
465 abort();
466 }
bf357333
NC
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
469 abort();
470 }
471
808ad2d0
NC
472 /* Return protocol is
473 int: errno value
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
476 */
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
480 vec[1].iov_len = 1;
481
482 got = readv(sock, vec, 2);
41e4abd8
NC
483
484 if(got < 0) {
485 perror("Debug leaking scalars parent read failed");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
808ad2d0 489 if(got < sizeof(returned_errno) + 1) {
41e4abd8 490 perror("Debug leaking scalars parent short read");
808ad2d0 491 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
492 abort();
493 }
494
808ad2d0
NC
495 if (*buffer) {
496 got = read(sock, buffer + 1, *buffer);
497 if(got < 0) {
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
500 abort();
501 }
502
503 if(got < *buffer) {
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
506 abort();
507 }
508 }
509
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
41e4abd8
NC
514 }
515}
516#endif
517
62375a60 518/*
954c1994
GS
519=for apidoc perl_destruct
520
521Shuts down a Perl interpreter. See L<perlembed>.
522
523=cut
524*/
525
31d77e54 526int
0cb96387 527perl_destruct(pTHXx)
79072805 528{
27da23d5 529 dVAR;
be2ea8ed 530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 531 HV *hv;
2aa47728 532#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
533 pid_t child;
534#endif
8990e307 535
7918f24d
NC
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537#ifndef MULTIPLICITY
ed6c66dd 538 PERL_UNUSED_ARG(my_perl);
7918f24d 539#endif
9d4ba2ae 540
3d22c4f0
GG
541 assert(PL_scopestack_ix == 1);
542
7766f137
GS
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
545
3280af22 546 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
547#ifdef DEBUGGING
548 {
9d4ba2ae
AL
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (s) {
e1ec3a88 551 const int i = atoi(s);
5f05dabc
PP
552 if (destruct_level < i)
553 destruct_level = i;
554 }
4633a7c4
LW
555 }
556#endif
557
27da23d5 558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
559 dJMPENV;
560 int x = 0;
561
562 JMPENV_PUSH(x);
1b6737cc 563 PERL_UNUSED_VAR(x);
9ebf26ad 564 if (PL_endav && !PL_minus_c) {
ca7b837b 565 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 566 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 567 }
f3faeb53 568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
16c91539 577 if (PL_threadhook(aTHX)) {
62375a60 578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
aac9d523
DM
754 /* note that PL_main_cv isn't usually actually freed at this point,
755 * due to the CvOUTSIDE refs from subs compiled within it. It will
756 * get freed once all the subs are freed in sv_clean_all(), for
757 * destruct_level > 0 */
3280af22 758 SvREFCNT_dec(PL_main_cv);
601f1833 759 PL_main_cv = NULL;
ca7b837b 760 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 761
13621cfb
NIS
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
764 be cleaned up now.
765 */
766
767 PerlIO_destruct(aTHX);
768
3280af22 769 if (PL_sv_objcount) {
a0d0e21e
LW
770 /*
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
774 */
a0d0e21e 775 sv_clean_objs();
bf9cdc68 776 PL_sv_objcount = 0;
8990e307
LW
777 }
778
5cd24f17 779 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 780 SvREFCNT_dec(PL_warnhook);
a0714e2c 781 PL_warnhook = NULL;
3280af22 782 SvREFCNT_dec(PL_diehook);
a0714e2c 783 PL_diehook = NULL;
5cd24f17 784
4b556e6c 785 /* call exit list functions */
3280af22 786 while (PL_exitlistlen-- > 0)
acfe0abc 787 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 788
3280af22 789 Safefree(PL_exitlist);
4b556e6c 790
1c4916e5
CB
791 PL_exitlist = NULL;
792 PL_exitlistlen = 0;
793
a3e6e81e
NC
794 SvREFCNT_dec(PL_registered_mros);
795
551a8b83 796 /* jettison our possibly duplicated environment */
4b647fb0
DM
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
799 */
2f42fcb0 800#ifndef PERL_MICRO
4b647fb0 801#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 802 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
803#ifdef USE_ITHREADS
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
806#endif
807 )
808 {
551a8b83
JH
809 I32 i;
810
811 for (i = 0; environ[i]; i++)
4b420006 812 safesysfree(environ[i]);
0631ea03 813
4b420006
JH
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
551a8b83
JH
816
817 environ = PL_origenviron;
818 }
819#endif
2f42fcb0 820#endif /* !PERL_MICRO */
551a8b83 821
30985c42
JH
822 if (destruct_level == 0) {
823
824 DEBUG_P(debprofdump());
825
826#if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
829#endif
830
831 CopFILE_free(&PL_compiling);
832 CopSTASH_free(&PL_compiling);
833
834 /* The exit() function will do everything that needs doing. */
835 return STATUS_EXIT;
836 }
837
5f8cb046
DM
838#ifdef USE_ITHREADS
839 /* the syntax tree is shared between clones
840 * so op_free(PL_main_root) only ReREFCNT_dec's
841 * REGEXPs in the parent interpreter
842 * we need to manually ReREFCNT_dec for the clones
843 */
5f8cb046 844 SvREFCNT_dec(PL_regex_padav);
7d49f689 845 PL_regex_padav = NULL;
5f8cb046
DM
846 PL_regex_pad = NULL;
847#endif
848
ad64d0ec 849 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
850 PL_stashcache = NULL;
851
5f05dabc
PP
852 /* loosen bonds of global variables */
853
2f9285f8
DM
854 /* XXX can PL_parser still be non-null here? */
855 if(PL_parser && PL_parser->rsfp) {
856 (void)PerlIO_close(PL_parser->rsfp);
857 PL_parser->rsfp = NULL;
8ebc5c01
PP
858 }
859
84386e14
RGS
860 if (PL_minus_F) {
861 Safefree(PL_splitstr);
862 PL_splitstr = NULL;
863 }
864
8ebc5c01 865 /* switches */
3280af22
NIS
866 PL_minus_n = FALSE;
867 PL_minus_p = FALSE;
868 PL_minus_l = FALSE;
869 PL_minus_a = FALSE;
870 PL_minus_F = FALSE;
871 PL_doswitches = FALSE;
599cee73 872 PL_dowarn = G_WARN_OFF;
3280af22 873 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
874 PL_unsafe = FALSE;
875
876 Safefree(PL_inplace);
bd61b366 877 PL_inplace = NULL;
a7cb1f99 878 SvREFCNT_dec(PL_patchlevel);
1e8125c6 879 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
880
881 if (PL_e_script) {
882 SvREFCNT_dec(PL_e_script);
a0714e2c 883 PL_e_script = NULL;
8ebc5c01
PP
884 }
885
bf9cdc68
RG
886 PL_perldb = 0;
887
8ebc5c01
PP
888 /* magical thingies */
889
e23d9e2f
CS
890 SvREFCNT_dec(PL_ofsgv); /* *, */
891 PL_ofsgv = NULL;
5f05dabc 892
7889fe52 893 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 894 PL_ors_sv = NULL;
8ebc5c01 895
3280af22 896 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 897 PL_rs = NULL;
dc92893f 898
d33b2eba 899 Safefree(PL_osname); /* $^O */
bd61b366 900 PL_osname = NULL;
5f05dabc 901
3280af22 902 SvREFCNT_dec(PL_statname);
a0714e2c
SS
903 PL_statname = NULL;
904 PL_statgv = NULL;
5f05dabc 905
8ebc5c01
PP
906 /* defgv, aka *_ should be taken care of elsewhere */
907
7d5ea4e7
GS
908 /* float buffer */
909 Safefree(PL_efloatbuf);
bd61b366 910 PL_efloatbuf = NULL;
7d5ea4e7
GS
911 PL_efloatsize = 0;
912
8ebc5c01 913 /* startup and shutdown function lists */
3280af22 914 SvREFCNT_dec(PL_beginav);
5a837c8f 915 SvREFCNT_dec(PL_beginav_save);
3280af22 916 SvREFCNT_dec(PL_endav);
7d30b5c4 917 SvREFCNT_dec(PL_checkav);
ece599bd 918 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
919 SvREFCNT_dec(PL_unitcheckav);
920 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 921 SvREFCNT_dec(PL_initav);
7d49f689
NC
922 PL_beginav = NULL;
923 PL_beginav_save = NULL;
924 PL_endav = NULL;
925 PL_checkav = NULL;
926 PL_checkav_save = NULL;
3c10abe3
AG
927 PL_unitcheckav = NULL;
928 PL_unitcheckav_save = NULL;
7d49f689 929 PL_initav = NULL;
5618dfe8 930
8ebc5c01 931 /* shortcuts just get cleared */
a0714e2c
SS
932 PL_envgv = NULL;
933 PL_incgv = NULL;
934 PL_hintgv = NULL;
935 PL_errgv = NULL;
936 PL_argvgv = NULL;
937 PL_argvoutgv = NULL;
938 PL_stdingv = NULL;
939 PL_stderrgv = NULL;
940 PL_last_in_gv = NULL;
941 PL_replgv = NULL;
942 PL_DBgv = NULL;
943 PL_DBline = NULL;
944 PL_DBsub = NULL;
945 PL_DBsingle = NULL;
946 PL_DBtrace = NULL;
947 PL_DBsignal = NULL;
601f1833 948 PL_DBcv = NULL;
7d49f689 949 PL_dbargs = NULL;
5c284bb0 950 PL_debstash = NULL;
8ebc5c01 951
7a1c5554 952 SvREFCNT_dec(PL_argvout_stack);
7d49f689 953 PL_argvout_stack = NULL;
8ebc5c01 954
5c831c24 955 SvREFCNT_dec(PL_modglobal);
5c284bb0 956 PL_modglobal = NULL;
5c831c24 957 SvREFCNT_dec(PL_preambleav);
7d49f689 958 PL_preambleav = NULL;
5c831c24 959 SvREFCNT_dec(PL_subname);
a0714e2c 960 PL_subname = NULL;
ca0c25f6 961#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 962 SvREFCNT_dec(PL_pidstatus);
5c284bb0 963 PL_pidstatus = NULL;
ca0c25f6 964#endif
5c831c24 965 SvREFCNT_dec(PL_toptarget);
a0714e2c 966 PL_toptarget = NULL;
5c831c24 967 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
968 PL_bodytarget = NULL;
969 PL_formtarget = NULL;
5c831c24 970
d33b2eba 971 /* free locale stuff */
b9582b6a 972#ifdef USE_LOCALE_COLLATE
d33b2eba 973 Safefree(PL_collation_name);
bd61b366 974 PL_collation_name = NULL;
b9582b6a 975#endif
d33b2eba 976
b9582b6a 977#ifdef USE_LOCALE_NUMERIC
d33b2eba 978 Safefree(PL_numeric_name);
bd61b366 979 PL_numeric_name = NULL;
a453c169 980 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 981 PL_numeric_radix_sv = NULL;
b9582b6a 982#endif
d33b2eba 983
5c831c24
GS
984 /* clear utf8 character classes */
985 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
986 SvREFCNT_dec(PL_utf8_ascii);
987 SvREFCNT_dec(PL_utf8_alpha);
988 SvREFCNT_dec(PL_utf8_space);
989 SvREFCNT_dec(PL_utf8_cntrl);
990 SvREFCNT_dec(PL_utf8_graph);
991 SvREFCNT_dec(PL_utf8_digit);
992 SvREFCNT_dec(PL_utf8_upper);
993 SvREFCNT_dec(PL_utf8_lower);
994 SvREFCNT_dec(PL_utf8_print);
995 SvREFCNT_dec(PL_utf8_punct);
996 SvREFCNT_dec(PL_utf8_xdigit);
997 SvREFCNT_dec(PL_utf8_mark);
998 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 999 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1000 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1001 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1002 SvREFCNT_dec(PL_utf8_idstart);
1003 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1004 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1005 PL_utf8_alnum = NULL;
a0714e2c
SS
1006 PL_utf8_ascii = NULL;
1007 PL_utf8_alpha = NULL;
1008 PL_utf8_space = NULL;
1009 PL_utf8_cntrl = NULL;
1010 PL_utf8_graph = NULL;
1011 PL_utf8_digit = NULL;
1012 PL_utf8_upper = NULL;
1013 PL_utf8_lower = NULL;
1014 PL_utf8_print = NULL;
1015 PL_utf8_punct = NULL;
1016 PL_utf8_xdigit = NULL;
1017 PL_utf8_mark = NULL;
1018 PL_utf8_toupper = NULL;
1019 PL_utf8_totitle = NULL;
1020 PL_utf8_tolower = NULL;
1021 PL_utf8_tofold = NULL;
1022 PL_utf8_idstart = NULL;
1023 PL_utf8_idcont = NULL;
2726813d 1024 PL_utf8_foldclosures = NULL;
5c831c24 1025
971a9dd3 1026 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1027 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1028 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1029 cophh_free(CopHINTHASH_get(&PL_compiling));
1030 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1031 CopFILE_free(&PL_compiling);
1032 CopSTASH_free(&PL_compiling);
5c831c24 1033
a0d0e21e 1034 /* Prepare to destruct main symbol table. */
5f05dabc 1035
3280af22 1036 hv = PL_defstash;
ca556bcd
DM
1037 /* break ref loop *:: <=> %:: */
1038 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1039 PL_defstash = 0;
a0d0e21e 1040 SvREFCNT_dec(hv);
5c831c24 1041 SvREFCNT_dec(PL_curstname);
a0714e2c 1042 PL_curstname = NULL;
a0d0e21e 1043
5a844595
GS
1044 /* clear queued errors */
1045 SvREFCNT_dec(PL_errors);
a0714e2c 1046 PL_errors = NULL;
5a844595 1047
dd69841b
BB
1048 SvREFCNT_dec(PL_isarev);
1049
a0d0e21e 1050 FREETMPS;
9b387841 1051 if (destruct_level >= 2) {
3280af22 1052 if (PL_scopestack_ix != 0)
9b387841
NC
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1055 (long)PL_scopestack_ix);
3280af22 1056 if (PL_savestack_ix != 0)
9b387841
NC
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1058 "Unbalanced saves: %ld more saves than restores\n",
1059 (long)PL_savestack_ix);
3280af22 1060 if (PL_tmps_floor != -1)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1062 (long)PL_tmps_floor + 1);
a0d0e21e 1063 if (cxstack_ix != -1)
9b387841
NC
1064 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1065 (long)cxstack_ix + 1);
a0d0e21e 1066 }
8990e307 1067
776df701 1068#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1069 /* the entries in this list are allocated via SV PVX's, so get freed
1070 * in sv_clean_all */
1071 Safefree(PL_my_cxt_list);
776df701 1072#endif
57bb2458 1073
8990e307 1074 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1075
1076 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1077 while (sv_clean_all() > 2)
5226ed68
JH
1078 ;
1079
d4777f27
GS
1080 AvREAL_off(PL_fdpid); /* no surviving entries */
1081 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1082 PL_fdpid = NULL;
d33b2eba 1083
6c644e78
GS
1084#ifdef HAVE_INTERP_INTERN
1085 sys_intern_clear();
1086#endif
1087
6e72f9df
PP
1088 /* Destruct the global string table. */
1089 {
1090 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1091 * so that sv_free() won't fail on them.
80459961
NC
1092 * Now that the global string table is using a single hunk of memory
1093 * for both HE and HEK, we either need to explicitly unshare it the
1094 * correct way, or actually free things here.
6e72f9df 1095 */
80459961
NC
1096 I32 riter = 0;
1097 const I32 max = HvMAX(PL_strtab);
c4420975 1098 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1099 HE *hent = array[0];
1100
6e72f9df 1101 for (;;) {
0453d815 1102 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1103 HE * const next = HeNEXT(hent);
9014280d 1104 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1105 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1106 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1107 Safefree(hent);
1108 hent = next;
6e72f9df
PP
1109 }
1110 if (!hent) {
1111 if (++riter > max)
1112 break;
1113 hent = array[riter];
1114 }
1115 }
80459961
NC
1116
1117 Safefree(array);
1118 HvARRAY(PL_strtab) = 0;
1119 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1120 }
3280af22 1121 SvREFCNT_dec(PL_strtab);
6e72f9df 1122
e652bb2f 1123#ifdef USE_ITHREADS
c21d1a0f 1124 /* free the pointer tables used for cloning */
a0739874 1125 ptr_table_free(PL_ptr_table);
bf9cdc68 1126 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1127#endif
a0739874 1128
d33b2eba
GS
1129 /* free special SVs */
1130
1131 SvREFCNT(&PL_sv_yes) = 0;
1132 sv_clear(&PL_sv_yes);
1133 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1135
1136 SvREFCNT(&PL_sv_no) = 0;
1137 sv_clear(&PL_sv_no);
1138 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1139 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1140
9f375a43
DM
1141 {
1142 int i;
1143 for (i=0; i<=2; i++) {
1144 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1145 sv_clear(PERL_DEBUG_PAD(i));
1146 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1147 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1148 }
1149 }
1150
0453d815 1151 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1153
eba0f806
DM
1154#ifdef DEBUG_LEAKING_SCALARS
1155 if (PL_sv_count != 0) {
1156 SV* sva;
1157 SV* sv;
1158 register SV* svend;
1159
ad64d0ec 1160 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1161 svend = &sva[SvREFCNT(sva)];
1162 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1163 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1164 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1165 " flags=0x%"UVxf
fd0854ff 1166 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1167 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1168 "serial %"UVuf"\n",
574b8821
NC
1169 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1170 pTHX__VALUE,
fd0854ff
DM
1171 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1172 sv->sv_debug_line,
1173 sv->sv_debug_inpad ? "for" : "by",
1174 sv->sv_debug_optype ?
1175 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1176 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1177 sv->sv_debug_serial
fd0854ff 1178 );
2aa47728 1179#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1180 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1181#endif
eba0f806
DM
1182 }
1183 }
1184 }
1185 }
2aa47728
NC
1186#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1187 {
1188 int status;
1189 fd_set rset;
1190 /* Wait for up to 4 seconds for child to terminate.
1191 This seems to be the least effort way of timing out on reaping
1192 its exit status. */
1193 struct timeval waitfor = {4, 0};
41e4abd8 1194 int sock = PL_dumper_fd;
2aa47728
NC
1195
1196 shutdown(sock, 1);
1197 FD_ZERO(&rset);
1198 FD_SET(sock, &rset);
1199 select(sock + 1, &rset, NULL, NULL, &waitfor);
1200 waitpid(child, &status, WNOHANG);
1201 close(sock);
1202 }
1203#endif
eba0f806 1204#endif
77abb4c6
NC
1205#ifdef DEBUG_LEAKING_SCALARS_ABORT
1206 if (PL_sv_count)
1207 abort();
1208#endif
bf9cdc68 1209 PL_sv_count = 0;
eba0f806 1210
f1fac472
NC
1211#ifdef PERL_DEBUG_READONLY_OPS
1212 free(PL_slabs);
1213 PL_slabs = NULL;
1214 PL_slab_count = 0;
1215#endif
eba0f806 1216
56a2bab7 1217#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1218 /* No more IO - including error messages ! */
1219 PerlIO_cleanup(aTHX);
1220#endif
1221
9f4bd222 1222 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1223 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1224 for no arg - and will try and SvREFCNT_dec it.
1225 */
1226 SvREFCNT(&PL_sv_undef) = 0;
1227 SvREADONLY_off(&PL_sv_undef);
1228
3280af22 1229 Safefree(PL_origfilename);
bd61b366 1230 PL_origfilename = NULL;
3280af22 1231 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1232 PL_reg_start_tmp = (char**)NULL;
1233 PL_reg_start_tmpl = 0;
43c5f42d 1234 Safefree(PL_reg_curpm);
82ba1be6 1235 Safefree(PL_reg_poscache);
dd28f7bb 1236 free_tied_hv_pool();
3280af22 1237 Safefree(PL_op_mask);
cf36064f 1238 Safefree(PL_psig_name);
bf9cdc68 1239 PL_psig_name = (SV**)NULL;
d525a7b2 1240 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1241 {
1242 /* We need to NULL PL_psig_pend first, so that
1243 signal handlers know not to use it */
1244 int *psig_save = PL_psig_pend;
1245 PL_psig_pend = (int*)NULL;
1246 Safefree(psig_save);
1247 }
a0714e2c 1248 PL_formfeed = NULL;
6e72f9df 1249 nuke_stacks();
bf9cdc68
RG
1250 PL_tainting = FALSE;
1251 PL_taint_warn = FALSE;
3280af22 1252 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1253 PL_debug = 0;
ac27b0f5 1254
a0d0e21e 1255 DEBUG_P(debprofdump());
d33b2eba 1256
e5dd39fc 1257#ifdef USE_REENTRANT_API
10bc17b6 1258 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1259#endif
1260
612f20c3
GS
1261 sv_free_arenas();
1262
5d9a96ca
DM
1263 while (PL_regmatch_slab) {
1264 regmatch_slab *s = PL_regmatch_slab;
1265 PL_regmatch_slab = PL_regmatch_slab->next;
1266 Safefree(s);
1267 }
1268
fc36a67e
PP
1269 /* As the absolutely last thing, free the non-arena SV for mess() */
1270
3280af22 1271 if (PL_mess_sv) {
f350b448
NC
1272 /* we know that type == SVt_PVMG */
1273
9c63abab 1274 /* it could have accumulated taint magic */
f350b448
NC
1275 MAGIC* mg;
1276 MAGIC* moremagic;
1277 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1278 moremagic = mg->mg_moremagic;
1279 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1280 && mg->mg_len >= 0)
1281 Safefree(mg->mg_ptr);
1282 Safefree(mg);
9c63abab 1283 }
f350b448 1284
fc36a67e 1285 /* we know that type >= SVt_PV */
8bd4d4c5 1286 SvPV_free(PL_mess_sv);
3280af22
NIS
1287 Safefree(SvANY(PL_mess_sv));
1288 Safefree(PL_mess_sv);
a0714e2c 1289 PL_mess_sv = NULL;
fc36a67e 1290 }
37038d91 1291 return STATUS_EXIT;
79072805
LW
1292}
1293
954c1994
GS
1294/*
1295=for apidoc perl_free
1296
1297Releases a Perl interpreter. See L<perlembed>.
1298
1299=cut
1300*/
1301
79072805 1302void
0cb96387 1303perl_free(pTHXx)
79072805 1304{
5174512c
NC
1305 dVAR;
1306
7918f24d
NC
1307 PERL_ARGS_ASSERT_PERL_FREE;
1308
c301d606
DM
1309 if (PL_veto_cleanup)
1310 return;
1311
7cb608b5 1312#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1313 {
1314 /*
1315 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1316 * value as we're probably hunting memory leaks then
1317 */
1318 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1319 if (!s || atoi(s) == 0) {
4fd0a9b8 1320 const U32 old_debug = PL_debug;
55ef9aae
MHM
1321 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1322 thread at thread exit. */
4fd0a9b8
NC
1323 if (DEBUG_m_TEST) {
1324 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1325 "free this thread's memory\n");
1326 PL_debug &= ~ DEBUG_m_FLAG;
1327 }
55ef9aae
MHM
1328 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1329 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1330 PL_debug = old_debug;
55ef9aae
MHM
1331 }
1332 }
7cb608b5
NC
1333#endif
1334
acfe0abc 1335#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1336# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1337 {
acfe0abc 1338# ifdef NETWARE
7af12a34 1339 void *host = nw_internal_host;
acfe0abc 1340# else
7af12a34 1341 void *host = w32_internal_host;
acfe0abc 1342# endif
7af12a34 1343 PerlMem_free(aTHXx);
acfe0abc 1344# ifdef NETWARE
7af12a34 1345 nw_delete_internal_host(host);
acfe0abc 1346# else
7af12a34 1347 win32_delete_internal_host(host);
acfe0abc 1348# endif
7af12a34 1349 }
1c0ca838
GS
1350# else
1351 PerlMem_free(aTHXx);
1352# endif
acfe0abc
GS
1353#else
1354 PerlMem_free(aTHXx);
76e3520e 1355#endif
79072805
LW
1356}
1357
b7f7fff6 1358#if defined(USE_ITHREADS)
aebd1ac7
GA
1359/* provide destructors to clean up the thread key when libperl is unloaded */
1360#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1361
826955bd 1362#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1363#pragma fini "perl_fini"
666ad1ec
GA
1364#elif defined(__sun) && !defined(__GNUC__)
1365#pragma fini (perl_fini)
aebd1ac7
GA
1366#endif
1367
0dbb1585
AL
1368static void
1369#if defined(__GNUC__)
1370__attribute__((destructor))
aebd1ac7 1371#endif
de009b76 1372perl_fini(void)
aebd1ac7 1373{
27da23d5 1374 dVAR;
c301d606 1375 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1376 FREE_THREAD_KEY;
1377}
1378
1379#endif /* WIN32 */
1380#endif /* THREADS */
1381
4b556e6c 1382void
864dbfa3 1383Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1384{
97aff369 1385 dVAR;
3280af22
NIS
1386 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1387 PL_exitlist[PL_exitlistlen].fn = fn;
1388 PL_exitlist[PL_exitlistlen].ptr = ptr;
1389 ++PL_exitlistlen;
4b556e6c
JD
1390}
1391
b7975bdd
NC
1392STATIC void
1393S_set_caret_X(pTHX) {
97aff369 1394 dVAR;
fafc274c 1395 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1396 if (tmpgv) {
0f1723e1 1397 SV *const caret_x = GvSV(tmpgv);
b7975bdd 1398#ifdef HAS_PROCSELFEXE
700dd4f8
NC
1399 char buf[MAXPATHLEN];
1400 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1401
1402 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1403 includes a spurious NUL which will cause $^X to fail in system
1404 or backticks (this will prevent extensions from being built and
1405 many tests from working). readlink is not meant to add a NUL.
1406 Normal readlink works fine.
1407 */
1408 if (len > 0 && buf[len-1] == '\0') {
1409 len--;
1410 }
1411
1412 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1413 returning the text "unknown" from the readlink rather than the path
1414 to the executable (or returning an error from the readlink). Any
1415 valid path has a '/' in it somewhere, so use that to validate the
1416 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1417 */
1418 if (len > 0 && memchr(buf, '/', len)) {
1419 sv_setpvn(caret_x, buf, len);
1420 }
1421 else {
1422 sv_setpv(caret_x, PL_origargv[0]);
1423 }
b7975bdd
NC
1424#else
1425#ifdef OS2
0f1723e1 1426 sv_setpv(caret_x, os2_execname(aTHX));
b7975bdd 1427#else
0f1723e1 1428 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd
NC
1429#endif
1430#endif
1431 }
1432}
1433
954c1994
GS
1434/*
1435=for apidoc perl_parse
1436
1437Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1438
1439=cut
1440*/
1441
79072805 1442int
0cb96387 1443perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1444{
27da23d5 1445 dVAR;
6224f72b 1446 I32 oldscope;
6224f72b 1447 int ret;
db36c5a1 1448 dJMPENV;
8d063cd8 1449
7918f24d
NC
1450 PERL_ARGS_ASSERT_PERL_PARSE;
1451#ifndef MULTIPLICITY
ed6c66dd 1452 PERL_UNUSED_ARG(my_perl);
7918f24d 1453#endif
9d4ba2ae 1454
b0891165
JH
1455#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1456 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1457 * This MUST be done before any hash stores or fetches take place.
486ec47a 1458 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1459 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1460 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1461 if (!PL_rehash_seed_set)
1462 PL_rehash_seed = get_hash_seed();
b0891165 1463 {
9d4ba2ae 1464 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1465
1b6737cc
AL
1466 if (s && (atoi(s) == 1))
1467 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1468 }
1469#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1470
3280af22 1471 PL_origargc = argc;
e2975953 1472 PL_origargv = argv;
a0d0e21e 1473
a2722ac9
GA
1474 if (PL_origalen != 0) {
1475 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1476 }
1477 else {
3cb9023d
JH
1478 /* Set PL_origalen be the sum of the contiguous argv[]
1479 * elements plus the size of the env in case that it is
e9137a8e 1480 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1481 * as the maximum modifiable length of $0. In the worst case
1482 * the area we are able to modify is limited to the size of
43c32782 1483 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1484 * --jhi */
e1ec3a88 1485 const char *s = NULL;
54bfe034 1486 int i;
1b6737cc 1487 const UV mask =
7d8e7db3 1488 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1489 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1490 const UV aligned =
43c32782
JH
1491 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1492
1493 /* See if all the arguments are contiguous in memory. Note
1494 * that 'contiguous' is a loose term because some platforms
1495 * align the argv[] and the envp[]. If the arguments look
1496 * like non-aligned, assume that they are 'strictly' or
1497 * 'traditionally' contiguous. If the arguments look like
1498 * aligned, we just check that they are within aligned
1499 * PTRSIZE bytes. As long as no system has something bizarre
1500 * like the argv[] interleaved with some other data, we are
1501 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1502 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1503 while (*s) s++;
1504 for (i = 1; i < PL_origargc; i++) {
1505 if ((PL_origargv[i] == s + 1
43c32782 1506#ifdef OS2
c8941eeb 1507 || PL_origargv[i] == s + 2
43c32782 1508#endif
c8941eeb
JH
1509 )
1510 ||
1511 (aligned &&
1512 (PL_origargv[i] > s &&
1513 PL_origargv[i] <=
1514 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1515 )
1516 {
1517 s = PL_origargv[i];
1518 while (*s) s++;
1519 }
1520 else
1521 break;
54bfe034 1522 }
54bfe034 1523 }
a4a109c2
JD
1524
1525#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1526 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1527 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1528 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1529 ||
1530 (aligned &&
1531 (PL_origenviron[0] > s &&
1532 PL_origenviron[0] <=
1533 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1534 )
1535 {
9d419b5f 1536#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1537 s = PL_origenviron[0];
1538 while (*s) s++;
1539#endif
bd61b366 1540 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1541 /* Force copy of environment. */
1542 for (i = 1; PL_origenviron[i]; i++) {
1543 if (PL_origenviron[i] == s + 1
1544 ||
1545 (aligned &&
1546 (PL_origenviron[i] > s &&
1547 PL_origenviron[i] <=
1548 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1549 )
1550 {
1551 s = PL_origenviron[i];
1552 while (*s) s++;
1553 }
1554 else
1555 break;
54bfe034 1556 }
43c32782 1557 }
54bfe034 1558 }
a4a109c2
JD
1559#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1560
2d2af554 1561 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1562 }
1563
3280af22 1564 if (PL_do_undump) {
a0d0e21e
LW
1565
1566 /* Come here if running an undumped a.out. */
1567
3280af22
NIS
1568 PL_origfilename = savepv(argv[0]);
1569 PL_do_undump = FALSE;
a0d0e21e 1570 cxstack_ix = -1; /* start label stack again */
748a9306 1571 init_ids();
b7975bdd
NC
1572 assert (!PL_tainted);
1573 TAINT;
1574 S_set_caret_X(aTHX);
1575 TAINT_NOT;
a0d0e21e
LW
1576 init_postdump_symbols(argc,argv,env);
1577 return 0;
1578 }
1579
3280af22 1580 if (PL_main_root) {
3280af22 1581 op_free(PL_main_root);
5f66b61c 1582 PL_main_root = NULL;
ff0cee69 1583 }
5f66b61c 1584 PL_main_start = NULL;
3280af22 1585 SvREFCNT_dec(PL_main_cv);
601f1833 1586 PL_main_cv = NULL;
79072805 1587
3280af22
NIS
1588 time(&PL_basetime);
1589 oldscope = PL_scopestack_ix;
599cee73 1590 PL_dowarn = G_WARN_OFF;
f86702cc 1591
14dd3ad8 1592 JMPENV_PUSH(ret);
6224f72b 1593 switch (ret) {
312caa8e 1594 case 0:
14dd3ad8 1595 parse_body(env,xsinit);
9ebf26ad 1596 if (PL_unitcheckav) {
3c10abe3 1597 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1598 }
1599 if (PL_checkav) {
ca7b837b 1600 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1601 call_list(oldscope, PL_checkav);
9ebf26ad 1602 }
14dd3ad8
GS
1603 ret = 0;
1604 break;
6224f72b
GS
1605 case 1:
1606 STATUS_ALL_FAILURE;
1607 /* FALL THROUGH */
1608 case 2:
1609 /* my_exit() was called */
3280af22 1610 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1611 LEAVE;
1612 FREETMPS;
3280af22 1613 PL_curstash = PL_defstash;
9ebf26ad 1614 if (PL_unitcheckav) {
3c10abe3 1615 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1616 }
1617 if (PL_checkav) {
ca7b837b 1618 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1619 call_list(oldscope, PL_checkav);
9ebf26ad 1620 }
37038d91 1621 ret = STATUS_EXIT;
14dd3ad8 1622 break;
6224f72b 1623 case 3:
bf49b057 1624 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1625 ret = 1;
1626 break;
6224f72b 1627 }
14dd3ad8
GS
1628 JMPENV_POP;
1629 return ret;
1630}
1631
4a5df386
NC
1632/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1633 miniperl, and we need to see those flags reflected in the values here. */
1634
1635/* What this returns is subject to change. Use the public interface in Config.
1636 */
1637static void
1638S_Internals_V(pTHX_ CV *cv)
1639{
1640 dXSARGS;
1641#ifdef LOCAL_PATCH_COUNT
1642 const int local_patch_count = LOCAL_PATCH_COUNT;
1643#else
1644 const int local_patch_count = 0;
1645#endif
2dc296d2 1646 const int entries = 3 + local_patch_count;
4a5df386
NC
1647 int i;
1648 static char non_bincompat_options[] =
1649# ifdef DEBUGGING
1650 " DEBUGGING"
1651# endif
17552284
NC
1652# ifdef HOMEGROWN_POSIX_SIGNALS
1653 " HOMEGROWN_POSIX_SIGNALS"
1654# endif
4a5df386 1655# ifdef NO_MATHOMS
0d311fbe 1656 " NO_MATHOMS"
4a5df386
NC
1657# endif
1658# ifdef PERL_DISABLE_PMC
1659 " PERL_DISABLE_PMC"
1660# endif
1661# ifdef PERL_DONT_CREATE_GVSV
1662 " PERL_DONT_CREATE_GVSV"
1663# endif
9a044a43
NC
1664# ifdef PERL_EXTERNAL_GLOB
1665 " PERL_EXTERNAL_GLOB"
1666# endif
4a5df386
NC
1667# ifdef PERL_IS_MINIPERL
1668 " PERL_IS_MINIPERL"
1669# endif
1670# ifdef PERL_MALLOC_WRAP
1671 " PERL_MALLOC_WRAP"
1672# endif
1673# ifdef PERL_MEM_LOG
1674 " PERL_MEM_LOG"
1675# endif
1676# ifdef PERL_MEM_LOG_NOIMPL
1677 " PERL_MEM_LOG_NOIMPL"
1678# endif
c3cf41ec
NC
1679# ifdef PERL_PRESERVE_IVUV
1680 " PERL_PRESERVE_IVUV"
1681# endif
4a5df386
NC
1682# ifdef PERL_USE_DEVEL
1683 " PERL_USE_DEVEL"
1684# endif
1685# ifdef PERL_USE_SAFE_PUTENV
1686 " PERL_USE_SAFE_PUTENV"
1687# endif
a3749cf3
NC
1688# ifdef UNLINK_ALL_VERSIONS
1689 " UNLINK_ALL_VERSIONS"
1690# endif
de618ee4
NC
1691# ifdef USE_ATTRIBUTES_FOR_PERLIO
1692 " USE_ATTRIBUTES_FOR_PERLIO"
1693# endif
4a5df386
NC
1694# ifdef USE_FAST_STDIO
1695 " USE_FAST_STDIO"
1696# endif
98548bdf
NC
1697# ifdef USE_LOCALE
1698 " USE_LOCALE"
1699# endif
98548bdf
NC
1700# ifdef USE_LOCALE_CTYPE
1701 " USE_LOCALE_CTYPE"
1702# endif
5a8d8935
NC
1703# ifdef USE_PERL_ATOF
1704 " USE_PERL_ATOF"
1705# endif
0d311fbe
NC
1706# ifdef USE_SITECUSTOMIZE
1707 " USE_SITECUSTOMIZE"
1708# endif
4a5df386
NC
1709 ;
1710 PERL_UNUSED_ARG(cv);
1711 PERL_UNUSED_ARG(items);
1712
1713 EXTEND(SP, entries);
1714
1715 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1716 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1717 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1718
1719#ifdef __DATE__
1720# ifdef __TIME__
1721 PUSHs(Perl_newSVpvn_flags(aTHX_
1722 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1723 SVs_TEMP));
1724# else
1725 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1726 SVs_TEMP));
1727# endif
1728#else
1729 PUSHs(&PL_sv_undef);
1730#endif
1731
4a5df386
NC
1732 for (i = 1; i <= local_patch_count; i++) {
1733 /* This will be an undef, if PL_localpatches[i] is NULL. */
1734 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1735 }
1736
1737 XSRETURN(entries);
1738}
1739
be71fc8f
NC
1740#define INCPUSH_UNSHIFT 0x01
1741#define INCPUSH_ADD_OLD_VERS 0x02
1742#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1743#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1744#define INCPUSH_NOT_BASEDIR 0x10
1745#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1746#define INCPUSH_ADD_SUB_DIRS \
1747 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1748
312caa8e 1749STATIC void *
14dd3ad8 1750S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1751{
27da23d5 1752 dVAR;
2f9285f8 1753 PerlIO *rsfp;
312caa8e 1754 int argc = PL_origargc;
8f42b153 1755 char **argv = PL_origargv;
e1ec3a88 1756 const char *scriptname = NULL;
312caa8e 1757 VOL bool dosearch = FALSE;
c7030b81 1758 register char c;
737c24fc 1759 bool doextract = FALSE;
bd61b366 1760 const char *cddir = NULL;
ab019eaa 1761#ifdef USE_SITECUSTOMIZE
20ef40cf 1762 bool minus_f = FALSE;
ab019eaa 1763#endif
009d90df 1764 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1765 bool add_read_e_script = FALSE;
009d90df 1766
ca7b837b 1767 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1768
009d90df 1769 SvGROW(linestr_sv, 80);
76f68e9b 1770 sv_setpvs(linestr_sv,"");
312caa8e 1771
6224f72b 1772 init_main_stash();
54310121 1773
c7030b81
NC
1774 {
1775 const char *s;
6224f72b
GS
1776 for (argc--,argv++; argc > 0; argc--,argv++) {
1777 if (argv[0][0] != '-' || !argv[0][1])
1778 break;
6224f72b
GS
1779 s = argv[0]+1;
1780 reswitch:
47f56822 1781 switch ((c = *s)) {
729a02f2 1782 case 'C':
1d5472a9
GS
1783#ifndef PERL_STRICT_CR
1784 case '\r':
1785#endif
6224f72b
GS
1786 case ' ':
1787 case '0':
1788 case 'F':
1789 case 'a':
1790 case 'c':
1791 case 'd':
1792 case 'D':
1793 case 'h':
1794 case 'i':
1795 case 'l':
1796 case 'M':
1797 case 'm':
1798 case 'n':
1799 case 'p':
1800 case 's':
1801 case 'u':
1802 case 'U':
1803 case 'v':
599cee73
PM
1804 case 'W':
1805 case 'X':
6224f72b 1806 case 'w':
97bd5664 1807 if ((s = moreswitches(s)))
6224f72b
GS
1808 goto reswitch;
1809 break;
33b78306 1810
1dbad523 1811 case 't':
22f7c9c9 1812 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1813 if( !PL_tainting ) {
1814 PL_taint_warn = TRUE;
1815 PL_tainting = TRUE;
1816 }
1817 s++;
1818 goto reswitch;
6224f72b 1819 case 'T':
22f7c9c9 1820 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1821 PL_tainting = TRUE;
317ea90d 1822 PL_taint_warn = FALSE;
6224f72b
GS
1823 s++;
1824 goto reswitch;
f86702cc 1825
bc9b29db
RH
1826 case 'E':
1827 PL_minus_E = TRUE;
1828 /* FALL THROUGH */
6224f72b 1829 case 'e':
f20b2998 1830 forbid_setid('e', FALSE);
3280af22 1831 if (!PL_e_script) {
396482e1 1832 PL_e_script = newSVpvs("");
5486870f 1833 add_read_e_script = TRUE;
6224f72b
GS
1834 }
1835 if (*++s)
3280af22 1836 sv_catpv(PL_e_script, s);
6224f72b 1837 else if (argv[1]) {
3280af22 1838 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1839 argc--,argv++;
1840 }
1841 else
47f56822 1842 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1843 sv_catpvs(PL_e_script, "\n");
6224f72b 1844 break;
afe37c7d 1845
20ef40cf 1846 case 'f':
f5542d3a 1847#ifdef USE_SITECUSTOMIZE
20ef40cf 1848 minus_f = TRUE;
f5542d3a 1849#endif
20ef40cf
GA
1850 s++;
1851 goto reswitch;
1852
6224f72b 1853 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1854 forbid_setid('I', FALSE);
bd61b366 1855 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1856 argc--,argv++;
1857 }
6224f72b 1858 if (s && *s) {
0df16ed7 1859 STRLEN len = strlen(s);
55b4bc1c 1860 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1861 }
1862 else
a67e862a 1863 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1864 break;
6224f72b 1865 case 'S':
f20b2998 1866 forbid_setid('S', FALSE);
6224f72b
GS
1867 dosearch = TRUE;
1868 s++;
1869 goto reswitch;
1870 case 'V':
7edfd0ef
NC
1871 {
1872 SV *opts_prog;
1873
7edfd0ef 1874 if (*++s != ':') {
37ca4a5b 1875 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1876 }
1877 else {
1878 ++s;
1879 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1880 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1881 0, s, 0);
1882 s += strlen(s);
1883 }
37ca4a5b 1884 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1885 /* don't look for script or read stdin */
1886 scriptname = BIT_BUCKET;
1887 goto reswitch;
6224f72b 1888 }
6224f72b 1889 case 'x':
737c24fc 1890 doextract = TRUE;
6224f72b 1891 s++;
304334da 1892 if (*s)
f4c556ac 1893 cddir = s;
6224f72b
GS
1894 break;
1895 case 0:
1896 break;
1897 case '-':
1898 if (!*++s || isSPACE(*s)) {
1899 argc--,argv++;
1900 goto switch_end;
1901 }
1902 /* catch use of gnu style long options */
1903 if (strEQ(s, "version")) {
dd374669 1904 s = (char *)"v";
6224f72b
GS
1905 goto reswitch;
1906 }
1907 if (strEQ(s, "help")) {
dd374669 1908 s = (char *)"h";
6224f72b
GS
1909 goto reswitch;
1910 }
1911 s--;
1912 /* FALL THROUGH */
1913 default:
cea2e8a9 1914 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1915 }
1916 }
c7030b81
NC
1917 }
1918
6224f72b 1919 switch_end:
54310121 1920
c7030b81
NC
1921 {
1922 char *s;
1923
f675dbe5
CB
1924 if (
1925#ifndef SECURE_INTERNAL_GETENV
1926 !PL_tainting &&
1927#endif
cf756827 1928 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1929 {
74288ac8
GS
1930 while (isSPACE(*s))
1931 s++;
317ea90d 1932 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1933 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1934 PL_tainting = TRUE;
317ea90d
MS
1935 PL_taint_warn = FALSE;
1936 }
74288ac8 1937 else {
bd61b366 1938 char *popt_copy = NULL;
74288ac8 1939 while (s && *s) {
54913509 1940 const char *d;
74288ac8
GS
1941 while (isSPACE(*s))
1942 s++;
1943 if (*s == '-') {
1944 s++;
1945 if (isSPACE(*s))
1946 continue;
1947 }
4ea8f8fb 1948 d = s;
74288ac8
GS
1949 if (!*s)
1950 break;
2b622f1a 1951 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1952 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1953 while (++s && *s) {
1954 if (isSPACE(*s)) {
cf756827 1955 if (!popt_copy) {
bfa6c418
NC
1956 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1957 s = popt_copy + (s - d);
1958 d = popt_copy;
cf756827 1959 }
4ea8f8fb
MS
1960 *s++ = '\0';
1961 break;
1962 }
1963 }
1c4db469 1964 if (*d == 't') {
317ea90d
MS
1965 if( !PL_tainting ) {
1966 PL_taint_warn = TRUE;
1967 PL_tainting = TRUE;
1968 }
1c4db469 1969 } else {
97bd5664 1970 moreswitches(d);
1c4db469 1971 }
6224f72b 1972 }
6224f72b
GS
1973 }
1974 }
c7030b81 1975 }
a0d0e21e 1976
43c0c913 1977#if defined(USE_SITECUSTOMIZE)
20ef40cf 1978 if (!minus_f) {
43c0c913 1979 /* The games with local $! are to avoid setting errno if there is no
404ad9dc 1980 sitecustomize script. */
43c0c913
NC
1981# ifdef PERL_IS_MINIPERL
1982 AV *const inc = GvAV(PL_incgv);
1983 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
1984
1985 if (inc0) {
1986 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1987 Perl_newSVpvf(aTHX_
1988 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
1989 }
1990# else
1991 /* SITELIB_EXP is a function call on Win32. */
404ad9dc 1992 const char *const sitelib = SITELIB_EXP;
29a861e7 1993 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1994 Perl_newSVpvf(aTHX_
1995 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
43c0c913 1996# endif
20ef40cf
GA
1997 }
1998#endif
1999
6224f72b
GS
2000 if (!scriptname)
2001 scriptname = argv[0];
3280af22 2002 if (PL_e_script) {
6224f72b
GS
2003 argc++,argv--;
2004 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2005 }
bd61b366 2006 else if (scriptname == NULL) {
6224f72b
GS
2007#ifdef MSDOS
2008 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2009 moreswitches("h");
6224f72b
GS
2010#endif
2011 scriptname = "-";
2012 }
2013
b7975bdd
NC
2014 /* Set $^X early so that it can be used for relocatable paths in @INC */
2015 assert (!PL_tainted);
2016 TAINT;
2017 S_set_caret_X(aTHX);
2018 TAINT_NOT;
2cace6ac 2019 init_perllib();
6224f72b 2020
a52eba0e 2021 {
f20b2998 2022 bool suidscript = FALSE;
829372d3 2023
cc69b689 2024 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2025
2f9285f8 2026 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2027 linestr_sv, rsfp);
6224f72b 2028
64ca3a65 2029#ifndef PERL_MICRO
a52eba0e
NC
2030# if defined(SIGCHLD) || defined(SIGCLD)
2031 {
2032# ifndef SIGCHLD
2033# define SIGCHLD SIGCLD
2034# endif
2035 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2036 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2037 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2038 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2039 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2040 }
0b5b802d 2041 }
a52eba0e 2042# endif
64ca3a65 2043#endif
0b5b802d 2044
737c24fc 2045 if (doextract) {
faef540c 2046
f20b2998 2047 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2048 setuid scripts. */
2049 forbid_setid('x', suidscript);
f20b2998 2050 /* Hence you can't get here if suidscript is true */
faef540c 2051
2f9285f8 2052 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2053 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2054 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2055 }
f4c556ac 2056 }
6224f72b 2057
ea726b52 2058 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2059 CvUNIQUE_on(PL_compcv);
2060
dd2155a4 2061 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2062
dd69841b
BB
2063 PL_isarev = newHV();
2064
0c4f7ff0 2065 boot_core_PerlIO();
6224f72b 2066 boot_core_UNIVERSAL();
e1a479c5 2067 boot_core_mro();
4a5df386 2068 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2069
2070 if (xsinit)
acfe0abc 2071 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2072#ifndef PERL_MICRO
d0d72822 2073#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2074 init_os_extras();
6224f72b 2075#endif
64ca3a65 2076#endif
6224f72b 2077
29209bc5 2078#ifdef USE_SOCKS
1b9c9cf5
DH
2079# ifdef HAS_SOCKS5_INIT
2080 socks5_init(argv[0]);
2081# else
29209bc5 2082 SOCKSinit(argv[0]);
1b9c9cf5 2083# endif
ac27b0f5 2084#endif
29209bc5 2085
6224f72b
GS
2086 init_predump_symbols();
2087 /* init_postdump_symbols not currently designed to be called */
2088 /* more than once (ENV isn't cleared first, for example) */
2089 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2090 if (!PL_do_undump)
6224f72b
GS
2091 init_postdump_symbols(argc,argv,env);
2092
27da23d5
JH
2093 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2094 * or explicitly in some platforms.
085a54d9 2095 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2096 * look like the user wants to use UTF-8. */
a0fd4948 2097#if defined(__SYMBIAN32__)
27da23d5
JH
2098 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2099#endif
e27b5b51 2100# ifndef PERL_IS_MINIPERL
06e66572
JH
2101 if (PL_unicode) {
2102 /* Requires init_predump_symbols(). */
a05d7ebb 2103 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2104 IO* io;
2105 PerlIO* fp;
2106 SV* sv;
2107
a05d7ebb 2108 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2109 * and the default open disciplines. */
a05d7ebb
JH
2110 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2111 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2112 (fp = IoIFP(io)))
2113 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2114 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2115 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2116 (fp = IoOFP(io)))
2117 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2118 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2119 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2120 (fp = IoOFP(io)))
2121 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2122 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2123 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2124 SVt_PV)))) {
a05d7ebb
JH
2125 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2126 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2127 if (in) {
2128 if (out)
76f68e9b 2129 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2130 else
76f68e9b 2131 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2132 }
2133 else if (out)
76f68e9b 2134 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2135 SvSETMAGIC(sv);
2136 }
b310b053
JH
2137 }
2138 }
e27b5b51 2139#endif
b310b053 2140
c7030b81
NC
2141 {
2142 const char *s;
4ffa73a3
JH
2143 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2144 if (strEQ(s, "unsafe"))
2145 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2146 else if (strEQ(s, "safe"))
2147 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2148 else
2149 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2150 }
c7030b81 2151 }
4ffa73a3 2152
81d86705 2153#ifdef PERL_MAD
c7030b81
NC
2154 {
2155 const char *s;
81d86705
NC
2156 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2157 PL_madskills = 1;
2158 PL_minus_c = 1;
2159 if (!s || !s[0])
2160 PL_xmlfp = PerlIO_stdout();
2161 else {
2162 PL_xmlfp = PerlIO_open(s, "w");
2163 if (!PL_xmlfp)
2164 Perl_croak(aTHX_ "Can't open %s", s);
2165 }
1a9a51d4 2166 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2167 }
c7030b81
NC
2168 }
2169
2170 {
2171 const char *s;
81d86705
NC
2172 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2173 PL_madskills = atoi(s);
1a9a51d4 2174 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2175 }
c7030b81 2176 }
81d86705
NC
2177#endif
2178
8eaa0acf 2179 lex_start(linestr_sv, rsfp, 0);
219f7226 2180 PL_subname = newSVpvs("main");
6224f72b 2181
5486870f
DM
2182 if (add_read_e_script)
2183 filter_add(read_e_script, NULL);
2184
6224f72b
GS
2185 /* now parse the script */
2186
93189314 2187 SETERRNO(0,SS_NORMAL);
28ac2b49 2188 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2189 if (PL_minus_c)
cea2e8a9 2190 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2191 else {
cea2e8a9 2192 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2193 PL_origfilename);
6224f72b
GS
2194 }
2195 }
57843af0 2196 CopLINE_set(PL_curcop, 0);
3280af22 2197 PL_curstash = PL_defstash;
3280af22
NIS
2198 if (PL_e_script) {
2199 SvREFCNT_dec(PL_e_script);
a0714e2c 2200 PL_e_script = NULL;
6224f72b
GS
2201 }
2202
3280af22 2203 if (PL_do_undump)
6224f72b
GS
2204 my_unexec();
2205
57843af0
GS
2206 if (isWARN_ONCE) {
2207 SAVECOPFILE(PL_curcop);
2208 SAVECOPLINE(PL_curcop);
3280af22 2209 gv_check(PL_defstash);
57843af0 2210 }
6224f72b
GS
2211
2212 LEAVE;
2213 FREETMPS;
2214
2215#ifdef MYMALLOC
f6a607bc
RGS
2216 {
2217 const char *s;
6224f72b
GS
2218 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2219 dump_mstats("after compilation:");
f6a607bc 2220 }
6224f72b
GS
2221#endif
2222
2223 ENTER;
febb3a6d 2224 PL_restartjmpenv = NULL;
3280af22 2225 PL_restartop = 0;
312caa8e 2226 return NULL;
6224f72b
GS
2227}
2228
954c1994
GS
2229/*
2230=for apidoc perl_run
2231
2232Tells a Perl interpreter to run. See L<perlembed>.
2233
2234=cut
2235*/
2236
6224f72b 2237int
0cb96387 2238perl_run(pTHXx)
6224f72b 2239{
97aff369 2240 dVAR;
6224f72b 2241 I32 oldscope;
14dd3ad8 2242 int ret = 0;
db36c5a1 2243 dJMPENV;
6224f72b 2244
7918f24d
NC
2245 PERL_ARGS_ASSERT_PERL_RUN;
2246#ifndef MULTIPLICITY
ed6c66dd 2247 PERL_UNUSED_ARG(my_perl);
7918f24d 2248#endif
9d4ba2ae 2249
3280af22 2250 oldscope = PL_scopestack_ix;
96e176bf
CL
2251#ifdef VMS
2252 VMSISH_HUSHED = 0;
2253#endif
6224f72b 2254
14dd3ad8 2255 JMPENV_PUSH(ret);
6224f72b
GS
2256 switch (ret) {
2257 case 1:
2258 cxstack_ix = -1; /* start context stack again */
312caa8e 2259 goto redo_body;
14dd3ad8 2260 case 0: /* normal completion */
14dd3ad8
GS
2261 redo_body:
2262 run_body(oldscope);
14dd3ad8
GS
2263 /* FALL THROUGH */
2264 case 2: /* my_exit() */
3280af22 2265 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2266 LEAVE;
2267 FREETMPS;
3280af22 2268 PL_curstash = PL_defstash;
3a1ee7e8 2269 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2270 PL_endav && !PL_minus_c) {
ca7b837b 2271 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2272 call_list(oldscope, PL_endav);
9ebf26ad 2273 }
6224f72b
GS
2274#ifdef MYMALLOC
2275 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2276 dump_mstats("after execution: ");
2277#endif
37038d91 2278 ret = STATUS_EXIT;
14dd3ad8 2279 break;
6224f72b 2280 case 3:
312caa8e
CS
2281 if (PL_restartop) {
2282 POPSTACK_TO(PL_mainstack);
2283 goto redo_body;
6224f72b 2284 }
bf49b057 2285 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2286 FREETMPS;
14dd3ad8
GS
2287 ret = 1;
2288 break;
6224f72b
GS
2289 }
2290
14dd3ad8
GS
2291 JMPENV_POP;
2292 return ret;
312caa8e
CS
2293}
2294
dd374669 2295STATIC void
14dd3ad8
GS
2296S_run_body(pTHX_ I32 oldscope)
2297{
97aff369 2298 dVAR;
6224f72b 2299 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2300 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2301
3280af22 2302 if (!PL_restartop) {
81d86705
NC
2303#ifdef PERL_MAD
2304 if (PL_xmlfp) {
2305 xmldump_all();
2306 exit(0); /* less likely to core dump than my_exit(0) */
2307 }
2308#endif
cf2782cd 2309#ifdef DEBUGGING
f0e3f042
CS
2310 if (DEBUG_x_TEST || DEBUG_B_TEST)
2311 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2312 if (!DEBUG_q_TEST)
2313 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2314#endif
6224f72b 2315
3280af22 2316 if (PL_minus_c) {
bf49b057 2317 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2318 my_exit(0);
2319 }
3280af22 2320 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2321 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2322 if (PL_initav) {
ca7b837b 2323 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2324 call_list(oldscope, PL_initav);
9ebf26ad 2325 }
f1fac472
NC
2326#ifdef PERL_DEBUG_READONLY_OPS
2327 Perl_pending_Slabs_to_ro(aTHX);
2328#endif
6224f72b
GS
2329 }
2330
2331 /* do it */
2332
ca7b837b 2333 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2334
3280af22 2335 if (PL_restartop) {
febb3a6d 2336 PL_restartjmpenv = NULL;
533c011a 2337 PL_op = PL_restartop;
3280af22 2338 PL_restartop = 0;
cea2e8a9 2339 CALLRUNOPS(aTHX);
6224f72b 2340 }
3280af22
NIS
2341 else if (PL_main_start) {
2342 CvDEPTH(PL_main_cv) = 1;
533c011a 2343 PL_op = PL_main_start;
cea2e8a9 2344 CALLRUNOPS(aTHX);
6224f72b 2345 }
f6b3007c
JH
2346 my_exit(0);
2347 /* NOTREACHED */
6224f72b
GS
2348}
2349
954c1994 2350/*
ccfc67b7
JH
2351=head1 SV Manipulation Functions
2352
954c1994
GS
2353=for apidoc p||get_sv
2354
64ace3f8
NC
2355Returns the SV of the specified Perl scalar. C<flags> are passed to
2356C<gv_fetchpv>. If C<GV_ADD> is set and the
2357Perl variable does not exist then it will be created. If C<flags> is zero
2358and the variable does not exist then NULL is returned.
954c1994
GS
2359
2360=cut
2361*/
2362
6224f72b 2363SV*
64ace3f8 2364Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2365{
2366 GV *gv;
7918f24d
NC
2367
2368 PERL_ARGS_ASSERT_GET_SV;
2369
64ace3f8 2370 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2371 if (gv)
2372 return GvSV(gv);
a0714e2c 2373 return NULL;
6224f72b
GS
2374}
2375
954c1994 2376/*
ccfc67b7
JH
2377=head1 Array Manipulation Functions
2378
954c1994
GS
2379=for apidoc p||get_av
2380
f0b90de1
SF
2381Returns the AV of the specified Perl global or package array with the given
2382name (so it won't work on lexical variables). C<flags> are passed
2383to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2384Perl variable does not exist then it will be created. If C<flags> is zero
2385and the variable does not exist then NULL is returned.
954c1994 2386
f0b90de1
SF
2387Perl equivalent: C<@{"$name"}>.
2388
954c1994
GS
2389=cut
2390*/
2391
6224f72b 2392AV*
cbfd0a87 2393Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2394{
cbfd0a87 2395 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2396
2397 PERL_ARGS_ASSERT_GET_AV;
2398
cbfd0a87 2399 if (flags)
6224f72b
GS
2400 return GvAVn(gv);
2401 if (gv)
2402 return GvAV(gv);
7d49f689 2403 return NULL;
6224f72b
GS
2404}
2405
954c1994 2406/*
ccfc67b7
JH
2407=head1 Hash Manipulation Functions
2408
954c1994
GS
2409=for apidoc p||get_hv
2410
6673a63c
NC
2411Returns the HV of the specified Perl hash. C<flags> are passed to
2412C<gv_fetchpv>. If C<GV_ADD> is set and the
2413Perl variable does not exist then it will be created. If C<flags> is zero
2414and the variable does not exist then NULL is returned.
954c1994
GS
2415
2416=cut
2417*/
2418
6224f72b 2419HV*
6673a63c 2420Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2421{
6673a63c 2422 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2423
2424 PERL_ARGS_ASSERT_GET_HV;
2425
6673a63c 2426 if (flags)
a0d0e21e
LW
2427 return GvHVn(gv);
2428 if (gv)
2429 return GvHV(gv);
5c284bb0 2430 return NULL;
a0d0e21e
LW
2431}
2432
954c1994 2433/*
ccfc67b7
JH
2434=head1 CV Manipulation Functions
2435
780a5241
NC
2436=for apidoc p||get_cvn_flags
2437
2438Returns the CV of the specified Perl subroutine. C<flags> are passed to
2439C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2440exist then it will be declared (which has the same effect as saying
2441C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2442then NULL is returned.
2443
954c1994
GS
2444=for apidoc p||get_cv
2445
780a5241 2446Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2447
2448=cut
2449*/
2450
a0d0e21e 2451CV*
780a5241 2452Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2453{
780a5241 2454 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2455 /* XXX this is probably not what they think they're getting.
2456 * It has the same effect as "sub name;", i.e. just a forward
2457 * declaration! */
7918f24d
NC
2458
2459 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2460
780a5241 2461 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2462 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2463 return newSUB(start_subparse(FALSE, 0),
780a5241 2464 newSVOP(OP_CONST, 0, sv),
5f66b61c 2465 NULL, NULL);
780a5241 2466 }
a0d0e21e 2467 if (gv)
8ebc5c01 2468 return GvCVu(gv);
601f1833 2469 return NULL;
a0d0e21e
LW
2470}
2471
2c67934f
NC
2472/* Nothing in core calls this now, but we can't replace it with a macro and
2473 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2474CV*
2475Perl_get_cv(pTHX_ const char *name, I32 flags)
2476{
7918f24d
NC
2477 PERL_ARGS_ASSERT_GET_CV;
2478
780a5241
NC
2479 return get_cvn_flags(name, strlen(name), flags);
2480}
2481
79072805
LW
2482/* Be sure to refetch the stack pointer after calling these routines. */
2483
954c1994 2484/*
ccfc67b7
JH
2485
2486=head1 Callback Functions
2487
954c1994
GS
2488=for apidoc p||call_argv
2489
f0b90de1
SF
2490Performs a callback to the specified named and package-scoped Perl subroutine
2491with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2492
2493Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2494
2495=cut
2496*/
2497
a0d0e21e 2498I32
8f42b153 2499Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2500
8ac85365
NIS
2501 /* See G_* flags in cop.h */
2502 /* null terminated arg list */
8990e307 2503{
97aff369 2504 dVAR;
a0d0e21e 2505 dSP;
8990e307 2506
7918f24d
NC
2507 PERL_ARGS_ASSERT_CALL_ARGV;
2508
924508f0 2509 PUSHMARK(SP);
a0d0e21e 2510 if (argv) {
8990e307 2511 while (*argv) {
6e449a3a 2512 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2513 argv++;
2514 }
a0d0e21e 2515 PUTBACK;
8990e307 2516 }
864dbfa3 2517 return call_pv(sub_name, flags);
8990e307
LW
2518}
2519
954c1994
GS
2520/*
2521=for apidoc p||call_pv
2522
2523Performs a callback to the specified Perl sub. See L<perlcall>.
2524
2525=cut
2526*/
2527
a0d0e21e 2528I32
864dbfa3 2529Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2530 /* name of the subroutine */
2531 /* See G_* flags in cop.h */
a0d0e21e 2532{
7918f24d
NC
2533 PERL_ARGS_ASSERT_CALL_PV;
2534
0da0e728 2535 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2536}
2537
954c1994
GS
2538/*
2539=for apidoc p||call_method
2540
2541Performs a callback to the specified Perl method. The blessed object must
2542be on the stack. See L<perlcall>.
2543
2544=cut
2545*/
2546
a0d0e21e 2547I32
864dbfa3 2548Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2549 /* name of the subroutine */
2550 /* See G_* flags in cop.h */
a0d0e21e 2551{
46ca9bac 2552 STRLEN len;
7918f24d
NC
2553 PERL_ARGS_ASSERT_CALL_METHOD;
2554
46ca9bac 2555 len = strlen(methname);
2556
2557 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2558 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2559}
2560
2561/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2562/*
2563=for apidoc p||call_sv
2564
2565Performs a callback to the Perl sub whose name is in the SV. See
2566L<perlcall>.
2567
2568=cut
2569*/
2570
a0d0e21e 2571I32
001d637e 2572Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2573 /* See G_* flags in cop.h */
a0d0e21e 2574{
27da23d5 2575 dVAR; dSP;
a0d0e21e 2576 LOGOP myop; /* fake syntax tree node */
968b3946 2577 UNOP method_op;
aa689395 2578 I32 oldmark;
8ea43dc8 2579 VOL I32 retval = 0;
a0d0e21e 2580 I32 oldscope;
54310121 2581 bool oldcatch = CATCH_GET;
6224f72b 2582 int ret;
c4420975 2583 OP* const oldop = PL_op;
db36c5a1 2584 dJMPENV;
1e422769 2585
7918f24d
NC
2586 PERL_ARGS_ASSERT_CALL_SV;
2587
a0d0e21e
LW
2588 if (flags & G_DISCARD) {
2589 ENTER;
2590 SAVETMPS;
2591 }
2f8edad0
NC
2592 if (!(flags & G_WANT)) {
2593 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2594 */
2595 flags |= G_SCALAR;
2596 }
a0d0e21e 2597
aa689395 2598 Zero(&myop, 1, LOGOP);
5f66b61c 2599 myop.op_next = NULL;
f51d4af5 2600 if (!(flags & G_NOARGS))
aa689395 2601 myop.op_flags |= OPf_STACKED;
4f911530 2602 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2603 SAVEOP();
533c011a 2604 PL_op = (OP*)&myop;
aa689395 2605
3280af22
NIS
2606 EXTEND(PL_stack_sp, 1);
2607 *++PL_stack_sp = sv;
aa689395 2608 oldmark = TOPMARK;
3280af22 2609 oldscope = PL_scopestack_ix;
a0d0e21e 2610
3280af22 2611 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2612 /* Handle first BEGIN of -d. */
3280af22 2613 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2614 /* Try harder, since this may have been a sighandler, thus
2615 * curstash may be meaningless. */
ea726b52 2616 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2617 && !(flags & G_NODEBUG))
533c011a 2618 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2619
968b3946
GS
2620 if (flags & G_METHOD) {
2621 Zero(&method_op, 1, UNOP);
2622 method_op.op_next = PL_op;
2623 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2624 method_op.op_type = OP_METHOD;
968b3946 2625 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2626 myop.op_type = OP_ENTERSUB;
f39d0b86 2627 PL_op = (OP*)&method_op;
968b3946
GS
2628 }
2629
312caa8e 2630 if (!(flags & G_EVAL)) {
0cdb2077 2631 CATCH_SET(TRUE);
d6f07c05 2632 CALL_BODY_SUB((OP*)&myop);
312caa8e 2633 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2634 CATCH_SET(oldcatch);
312caa8e
CS
2635 }
2636 else {
d78bda3d 2637 myop.op_other = (OP*)&myop;
3280af22 2638 PL_markstack_ptr--;
edb2152a 2639 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2640 PL_markstack_ptr++;
a0d0e21e 2641
14dd3ad8 2642 JMPENV_PUSH(ret);
edb2152a 2643
6224f72b
GS
2644 switch (ret) {
2645 case 0:
14dd3ad8 2646 redo_body:
d6f07c05 2647 CALL_BODY_SUB((OP*)&myop);
312caa8e 2648 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2649 if (!(flags & G_KEEPERR)) {
ab69dbc2 2650 CLEAR_ERRSV();
8433848b 2651 }
a0d0e21e 2652 break;
6224f72b 2653 case 1:
f86702cc 2654 STATUS_ALL_FAILURE;
a0d0e21e 2655 /* FALL THROUGH */
6224f72b 2656 case 2:
a0d0e21e 2657 /* my_exit() was called */
3280af22 2658 PL_curstash = PL_defstash;
a0d0e21e 2659 FREETMPS;
14dd3ad8 2660 JMPENV_POP;
f86702cc 2661 my_exit_jump();
a0d0e21e 2662 /* NOTREACHED */
6224f72b 2663 case 3:
3280af22 2664 if (PL_restartop) {
febb3a6d 2665 PL_restartjmpenv = NULL;
533c011a 2666 PL_op = PL_restartop;
3280af22 2667 PL_restartop = 0;
312caa8e 2668 goto redo_body;
a0d0e21e 2669 }
3280af22 2670 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2671 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2672 retval = 0;
2673 else {
2674 retval = 1;
3280af22 2675 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2676 }
312caa8e 2677 break;
a0d0e21e 2678 }
a0d0e21e 2679
edb2152a
NC
2680 if (PL_scopestack_ix > oldscope)
2681 delete_eval_scope();
14dd3ad8 2682 JMPENV_POP;
a0d0e21e 2683 }
1e422769 2684
a0d0e21e 2685 if (flags & G_DISCARD) {
3280af22 2686 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2687 retval = 0;
2688 FREETMPS;
2689 LEAVE;
2690 }
533c011a 2691 PL_op = oldop;
a0d0e21e
LW
2692 return retval;
2693}
2694
6e72f9df 2695/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2696
954c1994
GS
2697/*
2698=for apidoc p||eval_sv
2699
be064c4a
DM
2700Tells Perl to C<eval> the string in the SV. It supports the same flags
2701as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2702
2703=cut
2704*/
2705
a0d0e21e 2706I32
864dbfa3 2707Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2708
8ac85365 2709 /* See G_* flags in cop.h */
a0d0e21e 2710{
97aff369 2711 dVAR;
924508f0 2712 dSP;
a0d0e21e 2713 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2714 VOL I32 oldmark = SP - PL_stack_base;
2715 VOL I32 retval = 0;
6224f72b 2716 int ret;
c4420975 2717 OP* const oldop = PL_op;
db36c5a1 2718 dJMPENV;
84902520 2719
7918f24d
NC
2720 PERL_ARGS_ASSERT_EVAL_SV;
2721
4633a7c4
LW
2722 if (flags & G_DISCARD) {
2723 ENTER;
2724 SAVETMPS;
2725 }
2726
462e5cf6 2727 SAVEOP();
533c011a
NIS
2728 PL_op = (OP*)&myop;
2729 Zero(PL_op, 1, UNOP);
3280af22
NIS
2730 EXTEND(PL_stack_sp, 1);
2731 *++PL_stack_sp = sv;
79072805 2732
4633a7c4
LW
2733 if (!(flags & G_NOARGS))
2734 myop.op_flags = OPf_STACKED;
5f66b61c 2735 myop.op_next = NULL;
6e72f9df 2736 myop.op_type = OP_ENTEREVAL;
4f911530 2737 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2738 if (flags & G_KEEPERR)
2739 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2740
dedbcade
DM
2741 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2742 * before a PUSHEVAL, which corrupts the stack after a croak */
2743 TAINT_PROPER("eval_sv()");
2744
14dd3ad8 2745 JMPENV_PUSH(ret);
6224f72b
GS
2746 switch (ret) {
2747 case 0:
14dd3ad8 2748 redo_body:
2ba65d5f
DM
2749 if (PL_op == (OP*)(&myop)) {
2750 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2751 if (!PL_op)
2752 goto fail; /* failed in compilation */
2753 }
4aca2f62 2754 CALLRUNOPS(aTHX);
312caa8e 2755 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2756 if (!(flags & G_KEEPERR)) {
ab69dbc2 2757 CLEAR_ERRSV();
8433848b 2758 }
4633a7c4 2759 break;
6224f72b 2760 case 1:
f86702cc 2761 STATUS_ALL_FAILURE;
4633a7c4 2762 /* FALL THROUGH */
6224f72b 2763 case 2:
4633a7c4 2764 /* my_exit() was called */
3280af22 2765 PL_curstash = PL_defstash;
4633a7c4 2766 FREETMPS;
14dd3ad8 2767 JMPENV_POP;
f86702cc 2768 my_exit_jump();
4633a7c4 2769 /* NOTREACHED */
6224f72b 2770 case 3:
3280af22 2771 if (PL_restartop) {
febb3a6d 2772 PL_restartjmpenv = NULL;
533c011a 2773 PL_op = PL_restartop;
3280af22 2774 PL_restartop = 0;
312caa8e 2775 goto redo_body;
4633a7c4 2776 }
4aca2f62 2777 fail:
3280af22 2778 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2779 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2780 retval = 0;
2781 else {
2782 retval = 1;
3280af22 2783 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2784 }
312caa8e 2785 break;
4633a7c4
LW
2786 }
2787
14dd3ad8 2788 JMPENV_POP;
4633a7c4 2789 if (flags & G_DISCARD) {
3280af22 2790 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2791 retval = 0;
2792 FREETMPS;
2793 LEAVE;
2794 }
533c011a 2795 PL_op = oldop;
4633a7c4
LW
2796 return retval;
2797}
2798
954c1994
GS
2799/*
2800=for apidoc p||eval_pv
2801
2802Tells Perl to C<eval> the given string and return an SV* result.
2803
2804=cut
2805*/
2806
137443ea 2807SV*
864dbfa3 2808Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2809{
97aff369 2810 dVAR;
137443ea
PP
2811 dSP;
2812 SV* sv = newSVpv(p, 0);
2813
7918f24d
NC
2814 PERL_ARGS_ASSERT_EVAL_PV;
2815
864dbfa3 2816 eval_sv(sv, G_SCALAR);
137443ea
PP
2817 SvREFCNT_dec(sv);
2818
2819 SPAGAIN;
2820 sv = POPs;
2821 PUTBACK;
2822
2d8e6c8d 2823 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2824 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2825 }
137443ea
PP
2826
2827 return sv;
2828}
2829
4633a7c4
LW
2830/* Require a module. */
2831
954c1994 2832/*
ccfc67b7
JH
2833=head1 Embedding Functions
2834
954c1994
GS
2835=for apidoc p||require_pv
2836
7d3fb230
BS
2837Tells Perl to C<require> the file named by the string argument. It is
2838analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2839implemented that way; consider using load_module instead.
954c1994 2840
7d3fb230 2841=cut */
954c1994 2842
4633a7c4 2843void
864dbfa3 2844Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2845{
97aff369 2846 dVAR;
d3acc0f7 2847 dSP;
97aff369 2848 SV* sv;
7918f24d
NC
2849
2850 PERL_ARGS_ASSERT_REQUIRE_PV;
2851
e788e7d3 2852 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2853 PUTBACK;
be41e5d9
NC
2854 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2855 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2856 SPAGAIN;
2857 POPSTACK;
79072805
LW
2858}
2859
76e3520e 2860STATIC void
e1ec3a88 2861S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2862{
ab821d7f 2863 /* This message really ought to be max 23 lines.
75c72d73 2864 * Removed -h because the user already knows that option. Others? */
fb73857a 2865
1566c39d
NC
2866 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2867 minimum of 509 character string literals. */
27da23d5 2868 static const char * const usage_msg[] = {
1566c39d
NC
2869" -0[octal] specify record separator (\\0, if no argument)\n"
2870" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2871" -C[number/list] enables the listed Unicode features\n"
2872" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2873" -d[:debugger] run program under debugger\n"
2874" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2875" -e program one line of program (several -e's allowed, omit programfile)\n"
2876" -E program like -e, but enables all optional features\n"
2877" -f don't do $sitelib/sitecustomize.pl at startup\n"
2878" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2879" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2880" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2881" -l[octal] enable line ending processing, specifies line terminator\n"
2882" -[mM][-]module execute \"use/no module...\" before executing program\n"
2883" -n assume \"while (<>) { ... }\" loop around program\n"
2884" -p assume loop like -n but print line also, like sed\n"
2885" -s enable rudimentary parsing for switches after programfile\n"
2886" -S look for programfile using PATH environment variable\n",
2887" -t enable tainting warnings\n"
2888" -T enable tainting checks\n"
2889" -u dump core after parsing program\n"
2890" -U allow unsafe operations\n"
2891" -v print version, patchlevel and license\n"
2892" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2893" -w enable many useful warnings\n"
1566c39d
NC
2894" -W enable all warnings\n"
2895" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2896" -X disable all warnings\n"
2897" \n"
2898"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2899NULL
2900};
27da23d5 2901 const char * const *p = usage_msg;
1566c39d 2902 PerlIO *out = PerlIO_stdout();
fb73857a 2903
7918f24d
NC
2904 PERL_ARGS_ASSERT_USAGE;
2905
1566c39d
NC
2906 PerlIO_printf(out,
2907 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2908 name);
fb73857a 2909 while (*p)
1566c39d 2910 PerlIO_puts(out, *p++);
4633a7c4
LW
2911}
2912
b4ab917c
DM
2913/* convert a string of -D options (or digits) into an int.
2914 * sets *s to point to the char after the options */
2915
2916#ifdef DEBUGGING
2917int
e1ec3a88 2918Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2919{
27da23d5 2920 static const char * const usage_msgd[] = {
651b8f1a
NC
2921 " Debugging flag values: (see also -d)\n"
2922 " p Tokenizing and parsing (with v, displays parse stack)\n"
2923 " s Stack snapshots (with v, displays all stacks)\n"
2924 " l Context (loop) stack processing\n"
2925 " t Trace execution\n"
2926 " o Method and overloading resolution\n",
2927 " c String/numeric conversions\n"
2928 " P Print profiling info, source file input state\n"
2929 " m Memory and SV allocation\n"
2930 " f Format processing\n"
2931 " r Regular expression parsing and execution\n"
2932 " x Syntax tree dump\n",
2933 " u Tainting checks\n"
2934 " H Hash dump -- usurps values()\n"
2935 " X Scratchpad allocation\n"
2936 " D Cleaning up\n"
2937 " T Tokenising\n"
2938 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2939 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2940 " v Verbose: use in conjunction with other flags\n"
2941 " C Copy On Write\n"
2942 " A Consistency checks on internal structures\n"
2943 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2944 " M trace smart match resolution\n"
2945 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2946 NULL
2947 };
b4ab917c 2948 int i = 0;
7918f24d
NC
2949
2950 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2951
b4ab917c
DM
2952 if (isALPHA(**s)) {
2953 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2954 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2955
2956 for (; isALNUM(**s); (*s)++) {
c4420975 2957 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2958 if (d)
2959 i |= 1 << (d - debopts);
2960 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2961 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2962 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2963 }
2964 }
e6e64d9b 2965 else if (isDIGIT(**s)) {
b4ab917c
DM
2966 i = atoi(*s);
2967 for (; isALNUM(**s); (*s)++) ;
2968 }
ddcf8bc1 2969 else if (givehelp) {
06e869a4 2970 const char *const *p = usage_msgd;
651b8f1a 2971 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2972 }
b4ab917c
DM
2973# ifdef EBCDIC
2974 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2975 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2976 "-Dp not implemented on this platform\n");
2977# endif
2978 return i;
2979}
2980#endif
2981
79072805
LW
2982/* This routine handles any switches that can be given during run */
2983
c7030b81
NC
2984const char *
2985Perl_moreswitches(pTHX_ const char *s)
79072805 2986{
27da23d5 2987 dVAR;
84c133a0 2988 UV rschar;
0544e6df 2989 const char option = *s; /* used to remember option in -m/-M code */
79072805 2990
7918f24d
NC
2991 PERL_ARGS_ASSERT_MORESWITCHES;
2992
79072805
LW
2993 switch (*s) {
2994 case '0':
a863c7d1 2995 {
f2095865 2996 I32 flags = 0;
a3b680e6 2997 STRLEN numlen;
f2095865
JH
2998
2999 SvREFCNT_dec(PL_rs);
3000 if (s[1] == 'x' && s[2]) {
a3b680e6 3001 const char *e = s+=2;
f2095865
JH
3002 U8 *tmps;
3003
a3b680e6
AL
3004 while (*e)
3005 e++;
f2095865
JH
3006 numlen = e - s;
3007 flags = PERL_SCAN_SILENT_ILLDIGIT;
3008 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3009 if (s + numlen < e) {
3010 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3011 numlen = 0;
3012 s--;
3013 }
396482e1 3014 PL_rs = newSVpvs("");
c5661c80 3015 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3016 tmps = (U8*)SvPVX(PL_rs);
3017 uvchr_to_utf8(tmps, rschar);
3018 SvCUR_set(PL_rs, UNISKIP(rschar));
3019 SvUTF8_on(PL_rs);
3020 }
3021 else {
3022 numlen = 4;
3023 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3024 if (rschar & ~((U8)~0))
3025 PL_rs = &PL_sv_undef;
3026 else if (!rschar && numlen >= 2)
396482e1 3027 PL_rs = newSVpvs("");
f2095865
JH
3028 else {
3029 char ch = (char)rschar;
3030 PL_rs = newSVpvn(&ch, 1);
3031 }
3032 }
64ace3f8 3033 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3034 return s + numlen;
a863c7d1 3035 }
46487f74 3036 case 'C':
a05d7ebb 3037 s++;
dd374669 3038 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3039 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3040 PL_utf8cache = -1;
46487f74 3041 return s;
2304df62 3042 case 'F':
3280af22 3043 PL_minus_F = TRUE;
ebce5377
RGS
3044 PL_splitstr = ++s;
3045 while (*s && !isSPACE(*s)) ++s;
e49e380e 3046 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3047 return s;
79072805 3048 case 'a':
3280af22 3049 PL_minus_a = TRUE;
79072805
LW
3050 s++;
3051 return s;
3052 case 'c':
3280af22 3053 PL_minus_c = TRUE;
79072805
LW
3054 s++;
3055 return s;
3056 case 'd':
f20b2998 3057 forbid_setid('d', FALSE);
4633a7c4 3058 s++;
2cbb2ee1
RGS
3059
3060 /* -dt indicates to the debugger that threads will be used */
3061 if (*s == 't' && !isALNUM(s[1])) {
3062 ++s;
3063 my_setenv("PERL5DB_THREADED", "1");
3064 }
3065
70c94a19
RR
3066 /* The following permits -d:Mod to accepts arguments following an =
3067 in the fashion that -MSome::Mod does. */
3068 if (*s == ':' || *s == '=') {
b19934fb
NC
3069 const char *start;
3070 const char *end;
3071 SV *sv;
3072
3073 if (*++s == '-') {
3074 ++s;
3075 sv = newSVpvs("no Devel::");
3076 } else {
3077 sv = newSVpvs("use Devel::");
3078 }
3079
3080 start = s;
3081 end = s + strlen(s);
f85893a1 3082
b19934fb 3083 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3084 while(isALNUM(*s) || *s==':') ++s;
3085 if (*s != '=')
f85893a1 3086 sv_catpvn(sv, start, end - start);
70c94a19
RR
3087 else {
3088 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3089 /* Don't use NUL as q// delimiter here, this string goes in the
3090 * environment. */
3091 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3092 }
f85893a1 3093 s = end;
184f32ec 3094 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3095 SvREFCNT_dec(sv);
4633a7c4 3096 }
ed094faf 3097 if (!PL_perldb) {
3280af22 3098 PL_perldb = PERLDB_ALL;
a0d0e21e 3099 init_debugger();
ed094faf 3100 }
79072805
LW
3101 return s;
3102 case 'D':
0453d815 3103 {
79072805 3104#ifdef DEBUGGING
f20b2998 3105 forbid_setid('D', FALSE);
b4ab917c 3106 s++;
dd374669 3107 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3108#else /* !DEBUGGING */
0453d815 3109 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3110 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3111 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3112 for (s++; isALNUM(*s); s++) ;
79072805 3113#endif
79072805 3114 return s;
0453d815 3115 }
4633a7c4 3116 case 'h':
ac27b0f5 3117 usage(PL_origargv[0]);
7ca617d0 3118 my_exit(0);
79072805 3119 case 'i':
43c5f42d 3120 Safefree(PL_inplace);
c030f24b
GH
3121#if defined(__CYGWIN__) /* do backup extension automagically */
3122 if (*(s+1) == '\0') {
c86a4f2e 3123 PL_inplace = savepvs(".bak");
c030f24b
GH
3124 return s+1;
3125 }
3126#endif /* __CYGWIN__ */
5ef5d758 3127 {
d4c19fe8 3128 const char * const start = ++s;
5ef5d758
NC
3129 while (*s && !isSPACE(*s))
3130 ++s;
3131
3132 PL_inplace = savepvn(start, s - start);
3133 }
7b8d334a 3134 if (*s) {
5ef5d758 3135 ++s;
7b8d334a 3136 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3137 s++;
7b8d334a 3138 }
fb73857a 3139 return s;
4e49a025 3140 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3141 forbid_setid('I', FALSE);
fb73857a
PP
3142 ++s;
3143 while (*s && isSPACE(*s))
3144 ++s;
3145 if (*s) {
c7030b81 3146 const char *e, *p;
0df16ed7
GS
3147 p = s;
3148 /* ignore trailing spaces (possibly followed by other switches) */
3149 do {
3150 for (e = p; *e && !isSPACE(*e); e++) ;
3151 p = e;
3152 while (isSPACE(*p))
3153 p++;
3154 } while (*p && *p != '-');
55b4bc1c 3155 incpush(s, e-s,
e28f3139 3156 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3157 s = p;
3158 if (*s == '-')
3159 s++;
79072805
LW
3160 }
3161 else
a67e862a 3162 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3163 return s;
79072805 3164 case 'l':
3280af22 3165 PL_minus_l = TRUE;
79072805 3166 s++;
7889fe52
NIS
3167 if (PL_ors_sv) {
3168 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3169 PL_ors_sv = NULL;
7889fe52 3170 }
79072805 3171 if (isDIGIT(*s)) {
53305cf1 3172 I32 flags = 0;
a3b680e6 3173 STRLEN numlen;
396482e1 3174 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3175 numlen = 3 + (*s == '0');
3176 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3177 s += numlen;
3178 }
3179 else {
8bfdd7d9 3180 if (RsPARA(PL_rs)) {
396482e1 3181 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3182 }
3183 else {
8bfdd7d9 3184 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3185 }
79072805
LW
3186 }
3187 return s;
1a30305b 3188 case 'M':
f20b2998 3189 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3190 /* FALL THROUGH */
3191 case 'm':
f20b2998 3192 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3193 if (*++s) {
c7030b81 3194 const char *start;
b64cb68c 3195 const char *end;
11343788 3196 SV *sv;
e1ec3a88 3197 const char *use = "use ";
0544e6df 3198 bool colon = FALSE;
a5f75d66 3199 /* -M-foo == 'no foo' */
d0043bd1
NC
3200 /* Leading space on " no " is deliberate, to make both
3201 possibilities the same length. */
3202 if (*s == '-') { use = " no "; ++s; }
3203 sv = newSVpvn(use,4);
a5f75d66 3204 start = s;
1a30305b 3205 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3206 while(isALNUM(*s) || *s==':') {
3207 if( *s++ == ':' ) {
3208 if( *s == ':' )
3209 s++;
3210 else
3211 colon = TRUE;
3212 }
3213 }
3214 if (s == start)
3215 Perl_croak(aTHX_ "Module name required with -%c option",
3216 option);
3217 if (colon)
3218 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3219 "contains single ':'",
63da6837 3220 (int)(s - start), start, option);
b64cb68c 3221 end = s + strlen(s);
c07a80fd 3222 if (*s != '=') {
b64cb68c 3223 sv_catpvn(sv, start, end - start);
0544e6df 3224 if (option == 'm') {
c07a80fd 3225 if (*s != '\0')
cea2e8a9 3226 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3227 sv_catpvs( sv, " ()");
c07a80fd
PP
3228 }
3229 } else {
11343788 3230 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3231 /* Use NUL as q''-delimiter. */
3232 sv_catpvs(sv, " split(/,/,q\0");
3233 ++s;
3234 sv_catpvn(sv, s, end - s);
396482e1 3235 sv_catpvs(sv, "\0)");
c07a80fd 3236 }
b64cb68c 3237 s = end;
29a861e7 3238 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3239 }
3240 else
0544e6df 3241 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3242 return s;
79072805 3243 case 'n':
3280af22 3244 PL_minus_n = TRUE;
79072805
LW
3245 s++;
3246 return s;
3247 case 'p':
3280af22 3248 PL_minus_p = TRUE;
79072805
LW
3249 s++;
3250 return s;
3251 case 's':
f20b2998 3252 forbid_setid('s', FALSE);
3280af22 3253 PL_doswitches = TRUE;
79072805
LW
3254 s++;
3255 return s;
6537fe72
MS
3256 case 't':
3257 if (!PL_tainting)
22f7c9c9 3258 TOO_LATE_FOR('t');
6537fe72
MS
3259 s++;
3260 return s;
463ee0b2 3261 case 'T':
3280af22 3262 if (!PL_tainting)
22f7c9c9 3263 TOO_LATE_FOR('T');
463ee0b2
LW
3264 s++;
3265 return s;
79072805 3266 case 'u':
3280af22 3267 PL_do_undump = TRUE;
79072805
LW
3268 s++;
3269 return s;
3270 case 'U':
3280af22 3271 PL_unsafe = TRUE;
79072805
LW
3272 s++;
3273 return s;
3274 case 'v':
d7aa5382 3275 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3276 upg_version(PL_patchlevel, TRUE);
8e9464f1 3277#if !defined(DGUX)
46807d8e
YO
3278 {
3279 SV* level= vstringify(PL_patchlevel);
3280#ifdef PERL_PATCHNUM
23d483e2
NC
3281# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3282 SV *num = newSVpvs(PERL_PATCHNUM "*");
3283# else
3284 SV *num = newSVpvs(PERL_PATCHNUM);
3285# endif
46807d8e
YO
3286
3287 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3288 SvREFCNT_dec(level);
3289 level= num;
3290 } else {
d0a9311f 3291 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3292 SvREFCNT_dec(num);
3293 }
3294 #endif
3295 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3296 "\nThis is perl " STRINGIFY(PERL_REVISION)
3297 ", version " STRINGIFY(PERL_VERSION)
3298 ", subversion " STRINGIFY(PERL_SUBVERSION)
3299 " (%"SVf") built for " ARCHNAME, level
3300 );
46807d8e
YO
3301 SvREFCNT_dec(level);
3302 }
8e9464f1
JH
3303#else /* DGUX */
3304/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3305 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3306 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3307 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3308 PerlIO_printf(PerlIO_stdout(),
3309 Perl_form(aTHX_ " built under %s at %s %s\n",
3310 OSNAME, __DATE__, __TIME__));
3311 PerlIO_printf(PerlIO_stdout(),
3312 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3313 OSVERS));
8e9464f1 3314#endif /* !DGUX */
fb73857a
PP
3315#if defined(LOCAL_PATCH_COUNT)
3316 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "\n(with %d registered patch%s, "
3319 "see perl -V for more detail)",
bb7a0f54 3320 LOCAL_PATCH_COUNT,
b0e47665 3321 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3322#endif
1a30305b 3323
b0e47665 3324 PerlIO_printf(PerlIO_stdout(),
010d7370 3325 "\n\nCopyright 1987-2011, Larry Wall\n");
79072805 3326#ifdef MSDOS
b0e47665
GS
3327 PerlIO_printf(PerlIO_stdout(),
3328 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3329#endif
3330#ifdef DJGPP
b0e47665
GS
3331 PerlIO_printf(PerlIO_stdout(),
3332 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3333 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3334#endif
79072805 3335#ifdef OS2
b0e47665
GS
3336 PerlIO_printf(PerlIO_stdout(),
3337 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3338 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3339#endif
79072805 3340#ifdef atarist
b0e47665
GS
3341 PerlIO_printf(PerlIO_stdout(),
3342 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3343#endif
a3f9223b 3344#ifdef __BEOS__
b0e47665
GS
3345 PerlIO_printf(PerlIO_stdout(),
3346 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3347#endif
1d84e8df 3348#ifdef MPE
b0e47665 3349 PerlIO_printf(PerlIO_stdout(),
e583a879 3350 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3351#endif
9d116dd7 3352#ifdef OEMVS
b0e47665
GS
3353 PerlIO_printf(PerlIO_stdout(),
3354 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3355#endif
495c5fdc 3356#ifdef __VOS__
b0e47665 3357 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3358 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3359#endif
092bebab 3360#ifdef __OPEN_VM
b0e47665
GS
3361 PerlIO_printf(PerlIO_stdout(),
3362 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3363#endif
a1a0e61e 3364#ifdef POSIX_BC
b0e47665
GS
3365 PerlIO_printf(PerlIO_stdout(),
3366 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3367#endif
f83d2536 3368#ifdef EPOC
b0e47665 3369 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3370 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3371#endif
e1caacb4 3372#ifdef UNDER_CE
b475b3e6
JH
3373 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3374 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3375 wce_hitreturn();
3376#endif
a0fd4948 3377#ifdef __SYMBIAN32__
27da23d5
JH
3378 PerlIO_printf(PerlIO_stdout(),
3379 "Symbian port by Nokia, 2004-2005\n");
3380#endif
baed7233
DL
3381#ifdef BINARY_BUILD_NOTICE
3382 BINARY_BUILD_NOTICE;
3383#endif
b0e47665
GS
3384 PerlIO_printf(PerlIO_stdout(),
3385 "\n\
79072805 3386Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3387GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3388Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3389this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3390Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3391 my_exit(0);
79072805 3392 case 'w':
b2e5e6ba 3393 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3394 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3395 }
599cee73
PM
3396 s++;
3397 return s;
3398 case 'W':
ac27b0f5 3399 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3400 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3401 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3402 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3403 s++;
3404 return s;
3405 case 'X':
ac27b0f5 3406 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3407 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3408 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3409 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3410 s++;
3411 return s;
a0d0e21e 3412 case '*':
79072805 3413 case ' ':
d3133c89
NC
3414 while( *s == ' ' )
3415 ++s;
3416 if (s[0] == '-') /* Additional switches on #! line. */
3417 return s+1;
79072805 3418 break;
a0d0e21e 3419 case '-':
79072805 3420 case 0:
51882d45 3421#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3422 case '\r':
3423#endif
79072805
LW
3424 case '\n':
3425 case '\t':
3426 break;
aa689395
PP
3427#ifdef ALTERNATE_SHEBANG
3428 case 'S': /* OS/2 needs -S on "extproc" line. */
3429 break;
3430#endif
79072805 3431 default:
cea2e8a9 3432 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3433 }
bd61b366 3434 return NULL;
79072805
LW
3435}
3436
3437/* compliments of Tom Christiansen */
3438
3439/* unexec() can be found in the Gnu emacs distribution */
ee580363 3440/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3441
3442void
864dbfa3 3443Perl_my_unexec(pTHX)
79072805 3444{
b37c2d43 3445 PERL_UNUSED_CONTEXT;
79072805 3446#ifdef UNEXEC
b37c2d43
AL
3447 SV * prog = newSVpv(BIN_EXP, 0);
3448 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3449 int status = 1;
79072805
LW
3450 extern int etext;
3451
396482e1 3452 sv_catpvs(prog, "/perl");
396482e1 3453 sv_catpvs(file, ".perldump");
79072805 3454
ee580363
GS
3455 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3456 /* unexec prints msg to stderr in case of failure */
6ad3d225 3457 PerlProc_exit(status);
79072805 3458#else
a5f75d66
AD
3459# ifdef VMS
3460# include <lib$routines.h>
3461 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3462# elif defined(WIN32) || defined(__CYGWIN__)
3463 Perl_croak(aTHX_ "dump is not supported");
aa689395 3464# else
79072805 3465 ABORT(); /* for use with undump */
aa689395 3466# endif
a5f75d66 3467#endif
79072805
LW
3468}
3469
cb68f92d
GS
3470/* initialize curinterp */
3471STATIC void
cea2e8a9 3472S_init_interp(pTHX)
cb68f92d 3473{
97aff369 3474 dVAR;
acfe0abc 3475#ifdef MULTIPLICITY
115ff745
NC
3476# define PERLVAR(prefix,var,type)
3477# define PERLVARA(prefix,var,n,type)
acfe0abc 3478# if defined(PERL_IMPLICIT_CONTEXT)
115ff745
NC
3479# define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3480# define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3967c732 3481# else
115ff745
NC
3482# define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3483# define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3484# endif
acfe0abc 3485# include "intrpvar.h"
acfe0abc
GS
3486# undef PERLVAR
3487# undef PERLVARA
3488# undef PERLVARI
3489# undef PERLVARIC
3490#else
115ff745
NC