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[perl5.git] / perl.c
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1/* perl.c
2 *
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3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
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9 */
10
a0d0e21e 11/*
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TC
12 * A ship then new they built for him
13 * of mithril and of elven-glass
14 * --from Bilbo's song of Eärendil
15 *
16 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 17 */
45d8adaa 18
166f8a29
DM
19/* This file contains the top-level functions that are used to create, use
20 * and destroy a perl interpreter, plus the functions used by XS code to
21 * call back into perl. Note that it does not contain the actual main()
ddfa107c 22 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
23 */
24
378cc40b 25#include "EXTERN.h"
864dbfa3 26#define PERL_IN_PERL_C
378cc40b 27#include "perl.h"
e3321bb0 28#include "patchlevel.h" /* for local_patches */
378cc40b 29
011f1a1a
JH
30#ifdef NETWARE
31#include "nwutil.h"
32char *nw_get_sitelib(const char *pl);
33#endif
34
df5cef82 35/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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36#ifdef I_UNISTD
37#include <unistd.h>
38#endif
a0d0e21e 39
2aa47728
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40#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41# ifdef I_SYS_WAIT
42# include <sys/wait.h>
43# endif
bf357333
NC
44# ifdef I_SYSUIO
45# include <sys/uio.h>
46# endif
47
48union control_un {
49 struct cmsghdr cm;
50 char control[CMSG_SPACE(sizeof(int))];
51};
52
2aa47728
NC
53#endif
54
5311654c
JH
55#ifdef __BEOS__
56# define HZ 1000000
57#endif
58
59#ifndef HZ
60# ifdef CLK_TCK
61# define HZ CLK_TCK
62# else
63# define HZ 60
64# endif
65#endif
66
7114a2d2 67#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 68char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
69#endif
70
acfe0abc 71static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 72
cc69b689 73#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 74/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
75# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
76#else
ec2019ad 77/* Drop almost everything */
cc69b689 78# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 79#endif
8d063cd8 80
d6f07c05
AL
81#define CALL_BODY_EVAL(myop) \
82 if (PL_op == (myop)) \
139d0ce6 83 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
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AL
84 if (PL_op) \
85 CALLRUNOPS(aTHX);
86
87#define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
139d0ce6 89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
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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)
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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);
06d86050 110# endif
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111#ifdef PERL_IMPLICIT_CONTEXT
112 MUTEX_INIT(&PL_my_ctx_mutex);
113# endif
e6827a76 114 }
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NC
115#if defined(USE_ITHREADS)
116 else
117#else
118 /* This always happens for non-ithreads */
119#endif
120 {
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121 PERL_SET_THX(my_perl);
122 }
123}
06d86050 124
cbec8ebe
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125
126/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
127
128void
129Perl_sys_init(int* argc, char*** argv)
130{
4fc0badb 131 dVAR;
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132
133 PERL_ARGS_ASSERT_SYS_INIT;
134
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135 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
136 PERL_UNUSED_ARG(argv);
137 PERL_SYS_INIT_BODY(argc, argv);
138}
139
140void
141Perl_sys_init3(int* argc, char*** argv, char*** env)
142{
4fc0badb 143 dVAR;
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144
145 PERL_ARGS_ASSERT_SYS_INIT3;
146
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147 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
148 PERL_UNUSED_ARG(argv);
149 PERL_UNUSED_ARG(env);
150 PERL_SYS_INIT3_BODY(argc, argv, env);
151}
152
153void
d0820ef1 154Perl_sys_term()
cbec8ebe 155{
4fc0badb 156 dVAR;
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157 if (!PL_veto_cleanup) {
158 PERL_SYS_TERM_BODY();
159 }
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DM
160}
161
162
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163#ifdef PERL_IMPLICIT_SYS
164PerlInterpreter *
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165perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
166 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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GS
167 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
168 struct IPerlDir* ipD, struct IPerlSock* ipS,
169 struct IPerlProc* ipP)
170{
171 PerlInterpreter *my_perl;
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NC
172
173 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
174
9f653bb5 175 /* Newx() needs interpreter, so call malloc() instead */
32e30700 176 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 177 S_init_tls_and_interp(my_perl);
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178 Zero(my_perl, 1, PerlInterpreter);
179 PL_Mem = ipM;
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180 PL_MemShared = ipMS;
181 PL_MemParse = ipMP;
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182 PL_Env = ipE;
183 PL_StdIO = ipStd;
184 PL_LIO = ipLIO;
185 PL_Dir = ipD;
186 PL_Sock = ipS;
187 PL_Proc = ipP;
7cb608b5 188 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 189
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190 return my_perl;
191}
192#else
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193
194/*
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195=head1 Embedding Functions
196
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197=for apidoc perl_alloc
198
199Allocates a new Perl interpreter. See L<perlembed>.
200
201=cut
202*/
203
93a17b20 204PerlInterpreter *
cea2e8a9 205perl_alloc(void)
79072805 206{
cea2e8a9 207 PerlInterpreter *my_perl;
79072805 208
9f653bb5 209 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 210 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 211
e6827a76 212 S_init_tls_and_interp(my_perl);
7cb608b5 213#ifndef PERL_TRACK_MEMPOOL
07409e01 214 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
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NC
215#else
216 Zero(my_perl, 1, PerlInterpreter);
217 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
218 return my_perl;
219#endif
79072805 220}
32e30700 221#endif /* PERL_IMPLICIT_SYS */
79072805 222
954c1994
GS
223/*
224=for apidoc perl_construct
225
226Initializes a new Perl interpreter. See L<perlembed>.
227
228=cut
229*/
230
79072805 231void
0cb96387 232perl_construct(pTHXx)
79072805 233{
27da23d5 234 dVAR;
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235
236 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
237
8990e307 238#ifdef MULTIPLICITY
54aff467 239 init_interp();
ac27b0f5 240 PL_perl_destruct_level = 1;
54aff467 241#else
7918f24d 242 PERL_UNUSED_ARG(my_perl);
54aff467
GS
243 if (PL_perl_destruct_level > 0)
244 init_interp();
245#endif
34caed6d
DM
246 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
247
34caed6d
DM
248 /* set read-only and try to insure than we wont see REFCNT==0
249 very often */
250
251 SvREADONLY_on(&PL_sv_undef);
252 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
253
254 sv_setpv(&PL_sv_no,PL_No);
255 /* value lookup in void context - happens to have the side effect
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NC
256 of caching the numeric forms. However, as &PL_sv_no doesn't contain
257 a string that is a valid numer, we have to turn the public flags by
258 hand: */
34caed6d 259 SvNV(&PL_sv_no);
c1939273 260 SvIV(&PL_sv_no);
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261 SvIOK_on(&PL_sv_no);
262 SvNOK_on(&PL_sv_no);
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DM
263 SvREADONLY_on(&PL_sv_no);
264 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
265
266 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 267 SvNV(&PL_sv_yes);
c1939273 268 SvIV(&PL_sv_yes);
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DM
269 SvREADONLY_on(&PL_sv_yes);
270 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
271
272 SvREADONLY_on(&PL_sv_placeholder);
273 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
274
275 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 276#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 277 PL_pidstatus = newHV();
ca0c25f6 278#endif
79072805 279
396482e1 280 PL_rs = newSVpvs("\n");
dc92893f 281
cea2e8a9 282 init_stacks();
79072805 283
748a9306 284 init_ids();
a5f75d66 285
312caa8e 286 JMPENV_BOOTSTRAP;
f86702cc
PP
287 STATUS_ALL_SUCCESS;
288
0672f40e 289 init_i18nl10n(1);
36477c24 290 SET_NUMERIC_STANDARD();
0b5b802d 291
ab821d7f 292#if defined(LOCAL_PATCH_COUNT)
3280af22 293 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
294#endif
295
52853b95
GS
296#ifdef HAVE_INTERP_INTERN
297 sys_intern_init();
298#endif
299
3a1ee7e8 300 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 301
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NIS
302 PL_fdpid = newAV(); /* for remembering popen pids by fd */
303 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 304 PL_errors = newSVpvs("");
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MHM
305 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
306 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
307 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 308#ifdef USE_ITHREADS
402d2eb1
NC
309 /* First entry is a list of empty elements. It needs to be initialised
310 else all hell breaks loose in S_find_uninit_var(). */
311 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 312 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 313#endif
e5dd39fc 314#ifdef USE_REENTRANT_API
59bd0823 315 Perl_reentrant_init(aTHX);
e5dd39fc 316#endif
3d47000e
AB
317
318 /* Note that strtab is a rather special HV. Assumptions are made
319 about not iterating on it, and not adding tie magic to it.
320 It is properly deallocated in perl_destruct() */
321 PL_strtab = newHV();
322
3d47000e
AB
323 HvSHAREKEYS_off(PL_strtab); /* mandatory */
324 hv_ksplit(PL_strtab, 512);
325
0631ea03
AB
326#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
327 _dyld_lookup_and_bind
328 ("__environ", (unsigned long *) &environ_pointer, NULL);
329#endif /* environ */
330
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JH
331#ifndef PERL_MICRO
332# ifdef USE_ENVIRON_ARRAY
0631ea03 333 PL_origenviron = environ;
2f42fcb0 334# endif
0631ea03
AB
335#endif
336
5311654c 337 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 338 * available or if the sysconf() fails, use the HZ.
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JH
339 * BeOS has those, but returns the wrong value.
340 * The HZ if not originally defined has been by now
341 * been defined as CLK_TCK, if available. */
dbc1d986 342#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
343 PL_clocktick = sysconf(_SC_CLK_TCK);
344 if (PL_clocktick <= 0)
345#endif
346 PL_clocktick = HZ;
347
081fc587
AB
348 PL_stashcache = newHV();
349
8cb289bd 350 PL_patchlevel = Perl_newSVpvf(aTHX_ "v%d.%d.%d", (int)PERL_REVISION,
e6830b13 351 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 352
27da23d5
JH
353#ifdef HAS_MMAP
354 if (!PL_mmap_page_size) {
355#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
356 {
357 SETERRNO(0, SS_NORMAL);
358# ifdef _SC_PAGESIZE
359 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
360# else
361 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
362# endif
363 if ((long) PL_mmap_page_size < 0) {
364 if (errno) {
44f8325f 365 SV * const error = ERRSV;
d4c19fe8 366 SvUPGRADE(error, SVt_PV);
0510663f 367 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
368 }
369 else
370 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
371 }
372 }
373#else
374# ifdef HAS_GETPAGESIZE
375 PL_mmap_page_size = getpagesize();
376# else
377# if defined(I_SYS_PARAM) && defined(PAGESIZE)
378 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
379# endif
380# endif
381#endif
382 if (PL_mmap_page_size <= 0)
383 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
384 (IV) PL_mmap_page_size);
385 }
386#endif /* HAS_MMAP */
387
388#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
389 PL_timesbase.tms_utime = 0;
390 PL_timesbase.tms_stime = 0;
391 PL_timesbase.tms_cutime = 0;
392 PL_timesbase.tms_cstime = 0;
393#endif
394
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
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
545#ifdef DEBUGGING
546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
e1ec3a88 549 const int i = atoi(s);
5f05dabc
PP
550 if (destruct_level < i)
551 destruct_level = i;
552 }
4633a7c4
LW
553 }
554#endif
555
27da23d5 556 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
557 dJMPENV;
558 int x = 0;
559
560 JMPENV_PUSH(x);
1b6737cc 561 PERL_UNUSED_VAR(x);
f3faeb53
AB
562 if (PL_endav && !PL_minus_c)
563 call_list(PL_scopestack_ix, PL_endav);
564 JMPENV_POP;
26f423df 565 }
f3faeb53 566 LEAVE;
a0d0e21e
LW
567 FREETMPS;
568
e00b64d4 569 /* Need to flush since END blocks can produce output */
f13a2bc0 570 my_fflush_all();
e00b64d4 571
62375a60
NIS
572 if (CALL_FPTR(PL_threadhook)(aTHX)) {
573 /* Threads hook has vetoed further cleanup */
c301d606 574 PL_veto_cleanup = TRUE;
37038d91 575 return STATUS_EXIT;
62375a60
NIS
576 }
577
2aa47728
NC
578#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
579 if (destruct_level != 0) {
580 /* Fork here to create a child. Our child's job is to preserve the
581 state of scalars prior to destruction, so that we can instruct it
582 to dump any scalars that we later find have leaked.
583 There's no subtlety in this code - it assumes POSIX, and it doesn't
584 fail gracefully */
585 int fd[2];
586
587 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
588 perror("Debug leaking scalars socketpair failed");
589 abort();
590 }
591
592 child = fork();
593 if(child == -1) {
594 perror("Debug leaking scalars fork failed");
595 abort();
596 }
597 if (!child) {
598 /* We are the child */
3125a5a4
NC
599 const int sock = fd[1];
600 const int debug_fd = PerlIO_fileno(Perl_debug_log);
601 int f;
808ad2d0
NC
602 const char *where;
603 /* Our success message is an integer 0, and a char 0 */
b61433a9 604 static const char success[sizeof(int) + 1] = {0};
3125a5a4 605
2aa47728 606 close(fd[0]);
2aa47728 607
3125a5a4
NC
608 /* We need to close all other file descriptors otherwise we end up
609 with interesting hangs, where the parent closes its end of a
610 pipe, and sits waiting for (another) child to terminate. Only
611 that child never terminates, because it never gets EOF, because
bf357333
NC
612 we also have the far end of the pipe open. We even need to
613 close the debugging fd, because sometimes it happens to be one
614 end of a pipe, and a process is waiting on the other end for
615 EOF. Normally it would be closed at some point earlier in
616 destruction, but if we happen to cause the pipe to remain open,
617 EOF never occurs, and we get an infinite hang. Hence all the
618 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
619
620 f = sysconf(_SC_OPEN_MAX);
621 if(f < 0) {
808ad2d0
NC
622 where = "sysconf failed";
623 goto abort;
3125a5a4
NC
624 }
625 while (f--) {
626 if (f == sock)
627 continue;
3125a5a4
NC
628 close(f);
629 }
630
2aa47728
NC
631 while (1) {
632 SV *target;
bf357333
NC
633 union control_un control;
634 struct msghdr msg;
635 struct iovec vec[1];
636 struct cmsghdr *cmptr;
637 ssize_t got;
638 int got_fd;
639
640 msg.msg_control = control.control;
641 msg.msg_controllen = sizeof(control.control);
642 /* We're a connected socket so we don't need a source */
643 msg.msg_name = NULL;
644 msg.msg_namelen = 0;
645 msg.msg_iov = vec;
646 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
647
648 vec[0].iov_base = (void*)&target;
649 vec[0].iov_len = sizeof(target);
650
651 got = recvmsg(sock, &msg, 0);
2aa47728
NC
652
653 if(got == 0)
654 break;
655 if(got < 0) {
808ad2d0
NC
656 where = "recv failed";
657 goto abort;
2aa47728
NC
658 }
659 if(got < sizeof(target)) {
808ad2d0
NC
660 where = "short recv";
661 goto abort;
2aa47728 662 }
bf357333 663
808ad2d0
NC
664 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
665 where = "no cmsg";
666 goto abort;
667 }
668 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
669 where = "wrong cmsg_len";
670 goto abort;
671 }
672 if(cmptr->cmsg_level != SOL_SOCKET) {
673 where = "wrong cmsg_level";
674 goto abort;
675 }
676 if(cmptr->cmsg_type != SCM_RIGHTS) {
677 where = "wrong cmsg_type";
678 goto abort;
679 }
bf357333
NC
680
681 got_fd = *(int*)CMSG_DATA(cmptr);
682 /* For our last little bit of trickery, put the file descriptor
683 back into Perl_debug_log, as if we never actually closed it
684 */
808ad2d0
NC
685 if(got_fd != debug_fd) {
686 if (dup2(got_fd, debug_fd) == -1) {
687 where = "dup2";
688 goto abort;
689 }
690 }
2aa47728 691 sv_dump(target);
bf357333 692
2aa47728
NC
693 PerlIO_flush(Perl_debug_log);
694
808ad2d0 695 got = write(sock, &success, sizeof(success));
2aa47728
NC
696
697 if(got < 0) {
808ad2d0
NC
698 where = "write failed";
699 goto abort;
2aa47728 700 }
808ad2d0
NC
701 if(got < sizeof(success)) {
702 where = "short write";
703 goto abort;
2aa47728
NC
704 }
705 }
706 _exit(0);
808ad2d0
NC
707 abort:
708 {
709 int send_errno = errno;
710 unsigned char length = (unsigned char) strlen(where);
711 struct iovec failure[3] = {
712 {(void*)&send_errno, sizeof(send_errno)},
713 {&length, 1},
714 {(void*)where, length}
715 };
716 int got = writev(sock, failure, 3);
717 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
718 in the parent if we try to read from the socketpair after the
719 child has exited, even if there was data to read.
720 So sleep a bit to give the parent a fighting chance of
721 reading the data. */
722 sleep(2);
723 _exit((got == -1) ? errno : 0);
724 }
bf357333 725 /* End of child. */
2aa47728 726 }
41e4abd8 727 PL_dumper_fd = fd[0];
2aa47728
NC
728 close(fd[1]);
729 }
730#endif
731
ff0cee69
PP
732 /* We must account for everything. */
733
734 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
735 /* Do this now, because destroying ops can cause new SVs to be generated
736 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
737 PL_curcop to point to a valid op from which the filename structure
738 member is copied. */
739 PL_curcop = &PL_compiling;
3280af22 740 if (PL_main_root) {
4e380990
DM
741 /* ensure comppad/curpad to refer to main's pad */
742 if (CvPADLIST(PL_main_cv)) {
743 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
744 }
3280af22 745 op_free(PL_main_root);
5f66b61c 746 PL_main_root = NULL;
a0d0e21e 747 }
5f66b61c 748 PL_main_start = NULL;
3280af22 749 SvREFCNT_dec(PL_main_cv);
601f1833 750 PL_main_cv = NULL;
24d3c518 751 PL_dirty = TRUE;
ff0cee69 752
13621cfb
NIS
753 /* Tell PerlIO we are about to tear things apart in case
754 we have layers which are using resources that should
755 be cleaned up now.
756 */
757
758 PerlIO_destruct(aTHX);
759
3280af22 760 if (PL_sv_objcount) {
a0d0e21e
LW
761 /*
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
765 */
a0d0e21e 766 sv_clean_objs();
bf9cdc68 767 PL_sv_objcount = 0;
a0de6cf5 768 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 769 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
770 }
771
5cd24f17 772 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 773 SvREFCNT_dec(PL_warnhook);
a0714e2c 774 PL_warnhook = NULL;
3280af22 775 SvREFCNT_dec(PL_diehook);
a0714e2c 776 PL_diehook = NULL;
5cd24f17 777
4b556e6c 778 /* call exit list functions */
3280af22 779 while (PL_exitlistlen-- > 0)
acfe0abc 780 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 781
3280af22 782 Safefree(PL_exitlist);
4b556e6c 783
1c4916e5
CB
784 PL_exitlist = NULL;
785 PL_exitlistlen = 0;
786
a3e6e81e
NC
787 SvREFCNT_dec(PL_registered_mros);
788
551a8b83 789 /* jettison our possibly duplicated environment */
4b647fb0
DM
790 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
791 * so we certainly shouldn't free it here
792 */
2f42fcb0 793#ifndef PERL_MICRO
4b647fb0 794#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 795 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
796#ifdef USE_ITHREADS
797 /* only main thread can free environ[0] contents */
798 && PL_curinterp == aTHX
799#endif
800 )
801 {
551a8b83
JH
802 I32 i;
803
804 for (i = 0; environ[i]; i++)
4b420006 805 safesysfree(environ[i]);
0631ea03 806
4b420006
JH
807 /* Must use safesysfree() when working with environ. */
808 safesysfree(environ);
551a8b83
JH
809
810 environ = PL_origenviron;
811 }
812#endif
2f42fcb0 813#endif /* !PERL_MICRO */
551a8b83 814
30985c42
JH
815 if (destruct_level == 0) {
816
817 DEBUG_P(debprofdump());
818
819#if defined(PERLIO_LAYERS)
820 /* No more IO - including error messages ! */
821 PerlIO_cleanup(aTHX);
822#endif
823
824 CopFILE_free(&PL_compiling);
825 CopSTASH_free(&PL_compiling);
826
827 /* The exit() function will do everything that needs doing. */
828 return STATUS_EXIT;
829 }
830
804ffa60 831 /* reset so print() ends up where we expect */
a0714e2c 832 setdefout(NULL);
804ffa60 833
5f8cb046
DM
834#ifdef USE_ITHREADS
835 /* the syntax tree is shared between clones
836 * so op_free(PL_main_root) only ReREFCNT_dec's
837 * REGEXPs in the parent interpreter
838 * we need to manually ReREFCNT_dec for the clones
839 */
5f8cb046 840 SvREFCNT_dec(PL_regex_padav);
7d49f689 841 PL_regex_padav = NULL;
5f8cb046
DM
842 PL_regex_pad = NULL;
843#endif
844
ad64d0ec 845 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
846 PL_stashcache = NULL;
847
5f05dabc
PP
848 /* loosen bonds of global variables */
849
2f9285f8
DM
850 /* XXX can PL_parser still be non-null here? */
851 if(PL_parser && PL_parser->rsfp) {
852 (void)PerlIO_close(PL_parser->rsfp);
853 PL_parser->rsfp = NULL;
8ebc5c01
PP
854 }
855
84386e14
RGS
856 if (PL_minus_F) {
857 Safefree(PL_splitstr);
858 PL_splitstr = NULL;
859 }
860
8ebc5c01 861 /* switches */
3280af22
NIS
862 PL_minus_n = FALSE;
863 PL_minus_p = FALSE;
864 PL_minus_l = FALSE;
865 PL_minus_a = FALSE;
866 PL_minus_F = FALSE;
867 PL_doswitches = FALSE;
599cee73 868 PL_dowarn = G_WARN_OFF;
3280af22
NIS
869 PL_doextract = FALSE;
870 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
871 PL_unsafe = FALSE;
872
873 Safefree(PL_inplace);
bd61b366 874 PL_inplace = NULL;
a7cb1f99 875 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
876
877 if (PL_e_script) {
878 SvREFCNT_dec(PL_e_script);
a0714e2c 879 PL_e_script = NULL;
8ebc5c01
PP
880 }
881
bf9cdc68
RG
882 PL_perldb = 0;
883
8ebc5c01
PP
884 /* magical thingies */
885
e23d9e2f
CS
886 SvREFCNT_dec(PL_ofsgv); /* *, */
887 PL_ofsgv = NULL;
5f05dabc 888
7889fe52 889 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 890 PL_ors_sv = NULL;
8ebc5c01 891
3280af22 892 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 893 PL_rs = NULL;
dc92893f 894
d33b2eba 895 Safefree(PL_osname); /* $^O */
bd61b366 896 PL_osname = NULL;
5f05dabc 897
3280af22 898 SvREFCNT_dec(PL_statname);
a0714e2c
SS
899 PL_statname = NULL;
900 PL_statgv = NULL;
5f05dabc 901
8ebc5c01
PP
902 /* defgv, aka *_ should be taken care of elsewhere */
903
8ebc5c01 904 /* clean up after study() */
3280af22 905 SvREFCNT_dec(PL_lastscream);
a0714e2c 906 PL_lastscream = NULL;
3280af22
NIS
907 Safefree(PL_screamfirst);
908 PL_screamfirst = 0;
909 Safefree(PL_screamnext);
910 PL_screamnext = 0;
8ebc5c01 911
7d5ea4e7
GS
912 /* float buffer */
913 Safefree(PL_efloatbuf);
bd61b366 914 PL_efloatbuf = NULL;
7d5ea4e7
GS
915 PL_efloatsize = 0;
916
8ebc5c01 917 /* startup and shutdown function lists */
3280af22 918 SvREFCNT_dec(PL_beginav);
5a837c8f 919 SvREFCNT_dec(PL_beginav_save);
3280af22 920 SvREFCNT_dec(PL_endav);
7d30b5c4 921 SvREFCNT_dec(PL_checkav);
ece599bd 922 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
923 SvREFCNT_dec(PL_unitcheckav);
924 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 925 SvREFCNT_dec(PL_initav);
7d49f689
NC
926 PL_beginav = NULL;
927 PL_beginav_save = NULL;
928 PL_endav = NULL;
929 PL_checkav = NULL;
930 PL_checkav_save = NULL;
3c10abe3
AG
931 PL_unitcheckav = NULL;
932 PL_unitcheckav_save = NULL;
7d49f689 933 PL_initav = NULL;
5618dfe8 934
8ebc5c01 935 /* shortcuts just get cleared */
a0714e2c
SS
936 PL_envgv = NULL;
937 PL_incgv = NULL;
938 PL_hintgv = NULL;
939 PL_errgv = NULL;
940 PL_argvgv = NULL;
941 PL_argvoutgv = NULL;
942 PL_stdingv = NULL;
943 PL_stderrgv = NULL;
944 PL_last_in_gv = NULL;
945 PL_replgv = NULL;
946 PL_DBgv = NULL;
947 PL_DBline = NULL;
948 PL_DBsub = NULL;
949 PL_DBsingle = NULL;
950 PL_DBtrace = NULL;
951 PL_DBsignal = NULL;
601f1833 952 PL_DBcv = NULL;
7d49f689 953 PL_dbargs = NULL;
5c284bb0 954 PL_debstash = NULL;
8ebc5c01 955
7a1c5554 956 SvREFCNT_dec(PL_argvout_stack);
7d49f689 957 PL_argvout_stack = NULL;
8ebc5c01 958
5c831c24 959 SvREFCNT_dec(PL_modglobal);
5c284bb0 960 PL_modglobal = NULL;
5c831c24 961 SvREFCNT_dec(PL_preambleav);
7d49f689 962 PL_preambleav = NULL;
5c831c24 963 SvREFCNT_dec(PL_subname);
a0714e2c 964 PL_subname = NULL;
ca0c25f6 965#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 966 SvREFCNT_dec(PL_pidstatus);
5c284bb0 967 PL_pidstatus = NULL;
ca0c25f6 968#endif
5c831c24 969 SvREFCNT_dec(PL_toptarget);
a0714e2c 970 PL_toptarget = NULL;
5c831c24 971 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
972 PL_bodytarget = NULL;
973 PL_formtarget = NULL;
5c831c24 974
d33b2eba 975 /* free locale stuff */
b9582b6a 976#ifdef USE_LOCALE_COLLATE
d33b2eba 977 Safefree(PL_collation_name);
bd61b366 978 PL_collation_name = NULL;
b9582b6a 979#endif
d33b2eba 980
b9582b6a 981#ifdef USE_LOCALE_NUMERIC
d33b2eba 982 Safefree(PL_numeric_name);
bd61b366 983 PL_numeric_name = NULL;
a453c169 984 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 985 PL_numeric_radix_sv = NULL;
b9582b6a 986#endif
d33b2eba 987
5c831c24
GS
988 /* clear utf8 character classes */
989 SvREFCNT_dec(PL_utf8_alnum);
990 SvREFCNT_dec(PL_utf8_alnumc);
991 SvREFCNT_dec(PL_utf8_ascii);
992 SvREFCNT_dec(PL_utf8_alpha);
993 SvREFCNT_dec(PL_utf8_space);
994 SvREFCNT_dec(PL_utf8_cntrl);
995 SvREFCNT_dec(PL_utf8_graph);
996 SvREFCNT_dec(PL_utf8_digit);
997 SvREFCNT_dec(PL_utf8_upper);
998 SvREFCNT_dec(PL_utf8_lower);
999 SvREFCNT_dec(PL_utf8_print);
1000 SvREFCNT_dec(PL_utf8_punct);
1001 SvREFCNT_dec(PL_utf8_xdigit);
1002 SvREFCNT_dec(PL_utf8_mark);
1003 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1004 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1005 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1006 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1007 SvREFCNT_dec(PL_utf8_idstart);
1008 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1009 PL_utf8_alnum = NULL;
1010 PL_utf8_alnumc = NULL;
1011 PL_utf8_ascii = NULL;
1012 PL_utf8_alpha = NULL;
1013 PL_utf8_space = NULL;
1014 PL_utf8_cntrl = NULL;
1015 PL_utf8_graph = NULL;
1016 PL_utf8_digit = NULL;
1017 PL_utf8_upper = NULL;
1018 PL_utf8_lower = NULL;
1019 PL_utf8_print = NULL;
1020 PL_utf8_punct = NULL;
1021 PL_utf8_xdigit = NULL;
1022 PL_utf8_mark = NULL;
1023 PL_utf8_toupper = NULL;
1024 PL_utf8_totitle = NULL;
1025 PL_utf8_tolower = NULL;
1026 PL_utf8_tofold = NULL;
1027 PL_utf8_idstart = NULL;
1028 PL_utf8_idcont = NULL;
5c831c24 1029
971a9dd3 1030 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1031 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1032 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1033 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1034 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1035 CopFILE_free(&PL_compiling);
1036 CopSTASH_free(&PL_compiling);
5c831c24 1037
a0d0e21e 1038 /* Prepare to destruct main symbol table. */
5f05dabc 1039
3280af22
NIS
1040 hv = PL_defstash;
1041 PL_defstash = 0;
a0d0e21e 1042 SvREFCNT_dec(hv);
5c831c24 1043 SvREFCNT_dec(PL_curstname);
a0714e2c 1044 PL_curstname = NULL;
a0d0e21e 1045
5a844595
GS
1046 /* clear queued errors */
1047 SvREFCNT_dec(PL_errors);
a0714e2c 1048 PL_errors = NULL;
5a844595 1049
dd69841b
BB
1050 SvREFCNT_dec(PL_isarev);
1051
a0d0e21e 1052 FREETMPS;
0453d815 1053 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1054 if (PL_scopestack_ix != 0)
9014280d 1055 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1056 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1057 (long)PL_scopestack_ix);
1058 if (PL_savestack_ix != 0)
9014280d 1059 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1060 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1061 (long)PL_savestack_ix);
1062 if (PL_tmps_floor != -1)
9014280d 1063 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1064 (long)PL_tmps_floor + 1);
a0d0e21e 1065 if (cxstack_ix != -1)
9014280d 1066 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1067 (long)cxstack_ix + 1);
a0d0e21e 1068 }
8990e307
LW
1069
1070 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1071
1072 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1073 while (sv_clean_all() > 2)
5226ed68
JH
1074 ;
1075
d4777f27
GS
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1078 PL_fdpid = NULL;
d33b2eba 1079
6c644e78
GS
1080#ifdef HAVE_INTERP_INTERN
1081 sys_intern_clear();
1082#endif
1083
6e72f9df
PP
1084 /* Destruct the global string table. */
1085 {
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
80459961
NC
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
6e72f9df 1091 */
80459961
NC
1092 I32 riter = 0;
1093 const I32 max = HvMAX(PL_strtab);
c4420975 1094 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1095 HE *hent = array[0];
1096
6e72f9df 1097 for (;;) {
0453d815 1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1099 HE * const next = HeNEXT(hent);
9014280d 1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1103 Safefree(hent);
1104 hent = next;
6e72f9df
PP
1105 }
1106 if (!hent) {
1107 if (++riter > max)
1108 break;
1109 hent = array[riter];
1110 }
1111 }
80459961
NC
1112
1113 Safefree(array);
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
1116 HvFILL(PL_strtab) = 0;
6e72f9df 1117 }
3280af22 1118 SvREFCNT_dec(PL_strtab);
6e72f9df 1119
e652bb2f 1120#ifdef USE_ITHREADS
c21d1a0f 1121 /* free the pointer tables used for cloning */
a0739874 1122 ptr_table_free(PL_ptr_table);
bf9cdc68 1123 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1124#endif
a0739874 1125
d33b2eba
GS
1126 /* free special SVs */
1127
1128 SvREFCNT(&PL_sv_yes) = 0;
1129 sv_clear(&PL_sv_yes);
1130 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1131 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1132
1133 SvREFCNT(&PL_sv_no) = 0;
1134 sv_clear(&PL_sv_no);
1135 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1136 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1137
9f375a43
DM
1138 {
1139 int i;
1140 for (i=0; i<=2; i++) {
1141 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1142 sv_clear(PERL_DEBUG_PAD(i));
1143 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1144 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1145 }
1146 }
1147
0453d815 1148 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1149 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1150
eba0f806
DM
1151#ifdef DEBUG_LEAKING_SCALARS
1152 if (PL_sv_count != 0) {
1153 SV* sva;
1154 SV* sv;
1155 register SV* svend;
1156
ad64d0ec 1157 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1158 svend = &sva[SvREFCNT(sva)];
1159 for (sv = sva + 1; sv < svend; ++sv) {
1160 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1161 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1162 " flags=0x%"UVxf
fd0854ff
DM
1163 " refcnt=%"UVuf pTHX__FORMAT "\n"
1164 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1166 pTHX__VALUE,
fd0854ff
DM
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
1172 sv->sv_debug_cloned ? " (cloned)" : ""
1173 );
2aa47728 1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1175 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1176#endif
eba0f806
DM
1177 }
1178 }
1179 }
1180 }
2aa47728
NC
1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1182 {
1183 int status;
1184 fd_set rset;
1185 /* Wait for up to 4 seconds for child to terminate.
1186 This seems to be the least effort way of timing out on reaping
1187 its exit status. */
1188 struct timeval waitfor = {4, 0};
41e4abd8 1189 int sock = PL_dumper_fd;
2aa47728
NC
1190
1191 shutdown(sock, 1);
1192 FD_ZERO(&rset);
1193 FD_SET(sock, &rset);
1194 select(sock + 1, &rset, NULL, NULL, &waitfor);
1195 waitpid(child, &status, WNOHANG);
1196 close(sock);
1197 }
1198#endif
eba0f806 1199#endif
77abb4c6
NC
1200#ifdef DEBUG_LEAKING_SCALARS_ABORT
1201 if (PL_sv_count)
1202 abort();
1203#endif
bf9cdc68 1204 PL_sv_count = 0;
eba0f806 1205
f1fac472
NC
1206#ifdef PERL_DEBUG_READONLY_OPS
1207 free(PL_slabs);
1208 PL_slabs = NULL;
1209 PL_slab_count = 0;
1210#endif
eba0f806 1211
56a2bab7 1212#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1213 /* No more IO - including error messages ! */
1214 PerlIO_cleanup(aTHX);
1215#endif
1216
9f4bd222 1217 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1218 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1219 for no arg - and will try and SvREFCNT_dec it.
1220 */
1221 SvREFCNT(&PL_sv_undef) = 0;
1222 SvREADONLY_off(&PL_sv_undef);
1223
3280af22 1224 Safefree(PL_origfilename);
bd61b366 1225 PL_origfilename = NULL;
3280af22 1226 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1227 PL_reg_start_tmp = (char**)NULL;
1228 PL_reg_start_tmpl = 0;
43c5f42d 1229 Safefree(PL_reg_curpm);
82ba1be6 1230 Safefree(PL_reg_poscache);
dd28f7bb 1231 free_tied_hv_pool();
3280af22 1232 Safefree(PL_op_mask);
cf36064f 1233 Safefree(PL_psig_ptr);
bf9cdc68 1234 PL_psig_ptr = (SV**)NULL;
cf36064f 1235 Safefree(PL_psig_name);
bf9cdc68 1236 PL_psig_name = (SV**)NULL;
2c2666fc 1237 Safefree(PL_bitcount);
bd61b366 1238 PL_bitcount = NULL;
ce08f86c 1239 Safefree(PL_psig_pend);
bf9cdc68 1240 PL_psig_pend = (int*)NULL;
a0714e2c 1241 PL_formfeed = NULL;
6e72f9df 1242 nuke_stacks();
bf9cdc68
RG
1243 PL_tainting = FALSE;
1244 PL_taint_warn = FALSE;
3280af22 1245 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1246 PL_debug = 0;
ac27b0f5 1247
a0d0e21e 1248 DEBUG_P(debprofdump());
d33b2eba 1249
e5dd39fc 1250#ifdef USE_REENTRANT_API
10bc17b6 1251 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1252#endif
1253
612f20c3
GS
1254 sv_free_arenas();
1255
5d9a96ca
DM
1256 while (PL_regmatch_slab) {
1257 regmatch_slab *s = PL_regmatch_slab;
1258 PL_regmatch_slab = PL_regmatch_slab->next;
1259 Safefree(s);
1260 }
1261
fc36a67e
PP
1262 /* As the absolutely last thing, free the non-arena SV for mess() */
1263
3280af22 1264 if (PL_mess_sv) {
f350b448
NC
1265 /* we know that type == SVt_PVMG */
1266
9c63abab 1267 /* it could have accumulated taint magic */
f350b448
NC
1268 MAGIC* mg;
1269 MAGIC* moremagic;
1270 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1271 moremagic = mg->mg_moremagic;
1272 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1273 && mg->mg_len >= 0)
1274 Safefree(mg->mg_ptr);
1275 Safefree(mg);
9c63abab 1276 }
f350b448 1277
fc36a67e 1278 /* we know that type >= SVt_PV */
8bd4d4c5 1279 SvPV_free(PL_mess_sv);
3280af22
NIS
1280 Safefree(SvANY(PL_mess_sv));
1281 Safefree(PL_mess_sv);
a0714e2c 1282 PL_mess_sv = NULL;
fc36a67e 1283 }
37038d91 1284 return STATUS_EXIT;
79072805
LW
1285}
1286
954c1994
GS
1287/*
1288=for apidoc perl_free
1289
1290Releases a Perl interpreter. See L<perlembed>.
1291
1292=cut
1293*/
1294
79072805 1295void
0cb96387 1296perl_free(pTHXx)
79072805 1297{
5174512c
NC
1298 dVAR;
1299
7918f24d
NC
1300 PERL_ARGS_ASSERT_PERL_FREE;
1301
c301d606
DM
1302 if (PL_veto_cleanup)
1303 return;
1304
7cb608b5 1305#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1306 {
1307 /*
1308 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1309 * value as we're probably hunting memory leaks then
1310 */
1311 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1312 if (!s || atoi(s) == 0) {
4fd0a9b8 1313 const U32 old_debug = PL_debug;
55ef9aae
MHM
1314 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1315 thread at thread exit. */
4fd0a9b8
NC
1316 if (DEBUG_m_TEST) {
1317 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1318 "free this thread's memory\n");
1319 PL_debug &= ~ DEBUG_m_FLAG;
1320 }
55ef9aae
MHM
1321 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1322 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1323 PL_debug = old_debug;
55ef9aae
MHM
1324 }
1325 }
7cb608b5
NC
1326#endif
1327
acfe0abc 1328#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1329# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1330 {
acfe0abc 1331# ifdef NETWARE
7af12a34 1332 void *host = nw_internal_host;
acfe0abc 1333# else
7af12a34 1334 void *host = w32_internal_host;
acfe0abc 1335# endif
7af12a34 1336 PerlMem_free(aTHXx);
acfe0abc 1337# ifdef NETWARE
7af12a34 1338 nw_delete_internal_host(host);
acfe0abc 1339# else
7af12a34 1340 win32_delete_internal_host(host);
acfe0abc 1341# endif
7af12a34 1342 }
1c0ca838
GS
1343# else
1344 PerlMem_free(aTHXx);
1345# endif
acfe0abc
GS
1346#else
1347 PerlMem_free(aTHXx);
76e3520e 1348#endif
79072805
LW
1349}
1350
b7f7fff6 1351#if defined(USE_ITHREADS)
aebd1ac7
GA
1352/* provide destructors to clean up the thread key when libperl is unloaded */
1353#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1354
826955bd 1355#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1356#pragma fini "perl_fini"
666ad1ec
GA
1357#elif defined(__sun) && !defined(__GNUC__)
1358#pragma fini (perl_fini)
aebd1ac7
GA
1359#endif
1360
0dbb1585
AL
1361static void
1362#if defined(__GNUC__)
1363__attribute__((destructor))
aebd1ac7 1364#endif
de009b76 1365perl_fini(void)
aebd1ac7 1366{
27da23d5 1367 dVAR;
c301d606 1368 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1369 FREE_THREAD_KEY;
1370}
1371
1372#endif /* WIN32 */
1373#endif /* THREADS */
1374
4b556e6c 1375void
864dbfa3 1376Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1377{
97aff369 1378 dVAR;
3280af22
NIS
1379 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1380 PL_exitlist[PL_exitlistlen].fn = fn;
1381 PL_exitlist[PL_exitlistlen].ptr = ptr;
1382 ++PL_exitlistlen;
4b556e6c
JD
1383}
1384
56cf6df8
RGS
1385#ifdef HAS_PROCSELFEXE
1386/* This is a function so that we don't hold on to MAXPATHLEN
1387 bytes of stack longer than necessary
1388 */
1389STATIC void
e1ec3a88 1390S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1391{
1392 char buf[MAXPATHLEN];
1393 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1394
1395 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1396 includes a spurious NUL which will cause $^X to fail in system
1397 or backticks (this will prevent extensions from being built and
1398 many tests from working). readlink is not meant to add a NUL.
1399 Normal readlink works fine.
1400 */
1401 if (len > 0 && buf[len-1] == '\0') {
1402 len--;
1403 }
1404
1405 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1406 returning the text "unknown" from the readlink rather than the path
1407 to the executable (or returning an error from the readlink). Any valid
1408 path has a '/' in it somewhere, so use that to validate the result.
1409 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1410 */
1411 if (len > 0 && memchr(buf, '/', len)) {
1412 sv_setpvn(sv,buf,len);
1413 }
1414 else {
1415 sv_setpv(sv,arg0);
1416 }
1417}
1418#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1419
1420STATIC void
1421S_set_caret_X(pTHX) {
97aff369 1422 dVAR;
fafc274c 1423 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1424 if (tmpgv) {
1425#ifdef HAS_PROCSELFEXE
1426 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1427#else
1428#ifdef OS2
c69033f2 1429 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1430#else
c69033f2 1431 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1432#endif
1433#endif
1434 }
1435}
1436
954c1994
GS
1437/*
1438=for apidoc perl_parse
1439
1440Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1441
1442=cut
1443*/
1444
79072805 1445int
0cb96387 1446perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1447{
27da23d5 1448 dVAR;
6224f72b 1449 I32 oldscope;
6224f72b 1450 int ret;
db36c5a1 1451 dJMPENV;
8d063cd8 1452
7918f24d
NC
1453 PERL_ARGS_ASSERT_PERL_PARSE;
1454#ifndef MULTIPLICITY
ed6c66dd 1455 PERL_UNUSED_ARG(my_perl);
7918f24d 1456#endif
9d4ba2ae 1457
b0891165
JH
1458#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1459 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1460 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1461 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1462 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1463 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1464 if (!PL_rehash_seed_set)
1465 PL_rehash_seed = get_hash_seed();
b0891165 1466 {
9d4ba2ae 1467 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1468
1b6737cc
AL
1469 if (s && (atoi(s) == 1))
1470 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1471 }
1472#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1473
3280af22 1474 PL_origargc = argc;
e2975953 1475 PL_origargv = argv;
a0d0e21e 1476
a2722ac9
GA
1477 if (PL_origalen != 0) {
1478 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1479 }
1480 else {
3cb9023d
JH
1481 /* Set PL_origalen be the sum of the contiguous argv[]
1482 * elements plus the size of the env in case that it is
e9137a8e 1483 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1484 * as the maximum modifiable length of $0. In the worst case
1485 * the area we are able to modify is limited to the size of
43c32782 1486 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1487 * --jhi */
e1ec3a88 1488 const char *s = NULL;
54bfe034 1489 int i;
1b6737cc 1490 const UV mask =
7d8e7db3 1491 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1492 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1493 const UV aligned =
43c32782
JH
1494 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1495
1496 /* See if all the arguments are contiguous in memory. Note
1497 * that 'contiguous' is a loose term because some platforms
1498 * align the argv[] and the envp[]. If the arguments look
1499 * like non-aligned, assume that they are 'strictly' or
1500 * 'traditionally' contiguous. If the arguments look like
1501 * aligned, we just check that they are within aligned
1502 * PTRSIZE bytes. As long as no system has something bizarre
1503 * like the argv[] interleaved with some other data, we are
1504 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1505 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1506 while (*s) s++;
1507 for (i = 1; i < PL_origargc; i++) {
1508 if ((PL_origargv[i] == s + 1
43c32782 1509#ifdef OS2
c8941eeb 1510 || PL_origargv[i] == s + 2
43c32782 1511#endif
c8941eeb
JH
1512 )
1513 ||
1514 (aligned &&
1515 (PL_origargv[i] > s &&
1516 PL_origargv[i] <=
1517 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1518 )
1519 {
1520 s = PL_origargv[i];
1521 while (*s) s++;
1522 }
1523 else
1524 break;
54bfe034 1525 }
54bfe034 1526 }
a4a109c2
JD
1527
1528#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1529 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1530 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1531 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1532 ||
1533 (aligned &&
1534 (PL_origenviron[0] > s &&
1535 PL_origenviron[0] <=
1536 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1537 )
1538 {
9d419b5f 1539#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1540 s = PL_origenviron[0];
1541 while (*s) s++;
1542#endif
bd61b366 1543 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1544 /* Force copy of environment. */
1545 for (i = 1; PL_origenviron[i]; i++) {
1546 if (PL_origenviron[i] == s + 1
1547 ||
1548 (aligned &&
1549 (PL_origenviron[i] > s &&
1550 PL_origenviron[i] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1552 )
1553 {
1554 s = PL_origenviron[i];
1555 while (*s) s++;
1556 }
1557 else
1558 break;
54bfe034 1559 }
43c32782 1560 }
54bfe034 1561 }
a4a109c2
JD
1562#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1563
2d2af554 1564 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1565 }
1566
3280af22 1567 if (PL_do_undump) {
a0d0e21e
LW
1568
1569 /* Come here if running an undumped a.out. */
1570
3280af22
NIS
1571 PL_origfilename = savepv(argv[0]);
1572 PL_do_undump = FALSE;
a0d0e21e 1573 cxstack_ix = -1; /* start label stack again */
748a9306 1574 init_ids();
b7975bdd
NC
1575 assert (!PL_tainted);
1576 TAINT;
1577 S_set_caret_X(aTHX);
1578 TAINT_NOT;
a0d0e21e
LW
1579 init_postdump_symbols(argc,argv,env);
1580 return 0;
1581 }
1582
3280af22 1583 if (PL_main_root) {
3280af22 1584 op_free(PL_main_root);
5f66b61c 1585 PL_main_root = NULL;
ff0cee69 1586 }
5f66b61c 1587 PL_main_start = NULL;
3280af22 1588 SvREFCNT_dec(PL_main_cv);
601f1833 1589 PL_main_cv = NULL;
79072805 1590
3280af22
NIS
1591 time(&PL_basetime);
1592 oldscope = PL_scopestack_ix;
599cee73 1593 PL_dowarn = G_WARN_OFF;
f86702cc 1594
14dd3ad8 1595 JMPENV_PUSH(ret);
6224f72b 1596 switch (ret) {
312caa8e 1597 case 0:
14dd3ad8 1598 parse_body(env,xsinit);
3c10abe3
AG
1599 if (PL_unitcheckav)
1600 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1601 if (PL_checkav)
1602 call_list(oldscope, PL_checkav);
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;
3c10abe3
AG
1614 if (PL_unitcheckav)
1615 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1616 if (PL_checkav)
1617 call_list(oldscope, PL_checkav);
37038d91 1618 ret = STATUS_EXIT;
14dd3ad8 1619 break;
6224f72b 1620 case 3:
bf49b057 1621 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1622 ret = 1;
1623 break;
6224f72b 1624 }
14dd3ad8
GS
1625 JMPENV_POP;
1626 return ret;
1627}
1628
e28f3139
NC
1629#define INCPUSH_ADD_SUB_DIRS 0x01
1630#define INCPUSH_ADD_OLD_VERS 0x02
a26c0e28 1631#define INCPUSH_NOT_BASEDIR 0x04
e28f3139
NC
1632#define INCPUSH_CAN_RELOCATE 0x08
1633#define INCPUSH_UNSHIFT 0x10
1634
312caa8e 1635STATIC void *
14dd3ad8 1636S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1637{
27da23d5 1638 dVAR;
2f9285f8 1639 PerlIO *rsfp;
312caa8e 1640 int argc = PL_origargc;
8f42b153 1641 char **argv = PL_origargv;
e1ec3a88 1642 const char *scriptname = NULL;
312caa8e 1643 VOL bool dosearch = FALSE;
312caa8e 1644 register SV *sv;
c7030b81 1645 register char c;
bd61b366 1646 const char *cddir = NULL;
ab019eaa 1647#ifdef USE_SITECUSTOMIZE
20ef40cf 1648 bool minus_f = FALSE;
ab019eaa 1649#endif
009d90df 1650 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1651 bool add_read_e_script = FALSE;
009d90df
DM
1652
1653 SvGROW(linestr_sv, 80);
76f68e9b 1654 sv_setpvs(linestr_sv,"");
312caa8e 1655
396482e1 1656 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1657 SAVEFREESV(sv);
1658 init_main_stash();
54310121 1659
c7030b81
NC
1660 {
1661 const char *s;
6224f72b
GS
1662 for (argc--,argv++; argc > 0; argc--,argv++) {
1663 if (argv[0][0] != '-' || !argv[0][1])
1664 break;
6224f72b
GS
1665 s = argv[0]+1;
1666 reswitch:
47f56822 1667 switch ((c = *s)) {
729a02f2 1668 case 'C':
1d5472a9
GS
1669#ifndef PERL_STRICT_CR
1670 case '\r':
1671#endif
6224f72b
GS
1672 case ' ':
1673 case '0':
1674 case 'F':
1675 case 'a':
1676 case 'c':
1677 case 'd':
1678 case 'D':
1679 case 'h':
1680 case 'i':
1681 case 'l':
1682 case 'M':
1683 case 'm':
1684 case 'n':
1685 case 'p':
1686 case 's':
1687 case 'u':
1688 case 'U':
1689 case 'v':
599cee73
PM
1690 case 'W':
1691 case 'X':
6224f72b 1692 case 'w':
97bd5664 1693 if ((s = moreswitches(s)))
6224f72b
GS
1694 goto reswitch;
1695 break;
33b78306 1696
1dbad523 1697 case 't':
22f7c9c9 1698 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1699 if( !PL_tainting ) {
1700 PL_taint_warn = TRUE;
1701 PL_tainting = TRUE;
1702 }
1703 s++;
1704 goto reswitch;
6224f72b 1705 case 'T':
22f7c9c9 1706 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1707 PL_tainting = TRUE;
317ea90d 1708 PL_taint_warn = FALSE;
6224f72b
GS
1709 s++;
1710 goto reswitch;
f86702cc 1711
bc9b29db
RH
1712 case 'E':
1713 PL_minus_E = TRUE;
1714 /* FALL THROUGH */
6224f72b 1715 case 'e':
bf4acbe4
GS
1716#ifdef MACOS_TRADITIONAL
1717 /* ignore -e for Dev:Pseudo argument */
1718 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1719 break;
bf4acbe4 1720#endif
f20b2998 1721 forbid_setid('e', FALSE);
3280af22 1722 if (!PL_e_script) {
396482e1 1723 PL_e_script = newSVpvs("");
5486870f 1724 add_read_e_script = TRUE;
6224f72b
GS
1725 }
1726 if (*++s)
3280af22 1727 sv_catpv(PL_e_script, s);
6224f72b 1728 else if (argv[1]) {
3280af22 1729 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1730 argc--,argv++;
1731 }
1732 else
47f56822 1733 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1734 sv_catpvs(PL_e_script, "\n");
6224f72b 1735 break;
afe37c7d 1736
20ef40cf 1737 case 'f':
f5542d3a 1738#ifdef USE_SITECUSTOMIZE
20ef40cf 1739 minus_f = TRUE;
f5542d3a 1740#endif
20ef40cf
GA
1741 s++;
1742 goto reswitch;
1743
6224f72b 1744 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1745 forbid_setid('I', FALSE);
bd61b366 1746 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1747 argc--,argv++;
1748 }
6224f72b 1749 if (s && *s) {
0df16ed7 1750 STRLEN len = strlen(s);
55b4bc1c 1751 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
396482e1 1752 sv_catpvs(sv, "-I");
55b4bc1c 1753 sv_catpvn(sv, s, len);
396482e1 1754 sv_catpvs(sv, " ");
0df16ed7
GS
1755 }
1756 else
a67e862a 1757 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1758 break;
6224f72b 1759 case 'S':
f20b2998 1760 forbid_setid('S', FALSE);
6224f72b
GS
1761 dosearch = TRUE;
1762 s++;
1763 goto reswitch;
1764 case 'V':
7edfd0ef
NC
1765 {
1766 SV *opts_prog;
1767
29a861e7 1768 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef 1769 if (*++s != ':') {
389d73ad
NC
1770 /* Can't do newSVpvs() as that would involve pre-processor
1771 condititionals inside a macro expansion. */
1772 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
6224f72b 1773# ifdef DEBUGGING
e2e4dbf1 1774 " DEBUGGING"
6224f72b 1775# endif
3bcf5ed8
SP
1776# ifdef NO_MATHOMS
1777 " NO_MATHOMS"
1778# endif
85e1fcb9 1779# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1780 " PERL_DONT_CREATE_GVSV"
85e1fcb9 1781# endif
85e1fcb9 1782# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1783 " PERL_MALLOC_WRAP"
85e1fcb9 1784# endif
4724db38
NC
1785# ifdef PERL_MEM_LOG
1786 " PERL_MEM_LOG"
1787# endif
1788# ifdef PERL_MEM_LOG_ENV
1789 " PERL_MEM_LOG_ENV"
1790# endif
1791# ifdef PERL_MEM_LOG_ENV_FD
1792 " PERL_MEM_LOG_ENV_FD"
1793# endif
1794# ifdef PERL_MEM_LOG_STDERR
1795 " PERL_MEM_LOG_STDERR"
1796# endif
1797# ifdef PERL_MEM_LOG_TIMESTAMP
1798 " PERL_MEM_LOG_TIMESTAMP"
1799# endif
1be1b388
MB
1800# ifdef PERL_USE_DEVEL
1801 " PERL_USE_DEVEL"
1802# endif
417cd4a8
SP
1803# ifdef PERL_USE_SAFE_PUTENV
1804 " PERL_USE_SAFE_PUTENV"
1805# endif
20ef40cf 1806# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1807 " USE_SITECUSTOMIZE"
20ef40cf 1808# endif
e187df3b
NC
1809# ifdef USE_FAST_STDIO
1810 " USE_FAST_STDIO"
1811# endif
389d73ad 1812 , 0);
efcaa95b 1813
b75885fd 1814 sv_catpv(opts_prog, PL_bincompat_options);
389d73ad
NC
1815 /* Terminate the qw(, and then wrap at 76 columns. */
1816 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1817#ifdef VMS
1818 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1819#else
1820 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1821#endif
389d73ad 1822 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
b363f7ed 1823
6224f72b 1824#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1825 if (LOCAL_PATCH_COUNT > 0) {
1826 int i;
396482e1 1827 sv_catpvs(opts_prog,
7edfd0ef
NC
1828 "\" Locally applied patches:\\n\",");
1829 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1830 if (PL_localpatches[i])
46807d8e
YO
1831 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1832 0, PL_localpatches[i], 0);
7edfd0ef 1833 }
6224f72b 1834 }
6224f72b 1835#endif
7edfd0ef 1836 Perl_sv_catpvf(aTHX_ opts_prog,
758ce194 1837 "\" Built under %s\\n",OSNAME);
6224f72b
GS
1838#ifdef __DATE__
1839# ifdef __TIME__
895aa832
NC
1840 sv_catpvs(opts_prog,
1841 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
6224f72b 1842# else
895aa832 1843 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
6224f72b
GS
1844# endif
1845#endif
396482e1 1846 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1847 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1848 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1849#ifdef __CYGWIN__
396482e1 1850 sv_catpvs(opts_prog,
7edfd0ef 1851 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1852#endif
396482e1 1853 sv_catpvs(opts_prog,
7edfd0ef
NC
1854 "print \" \\%ENV:\\n @env\\n\" if @env;"
1855 "print \" \\@INC:\\n @INC\\n\";");
1856 }
1857 else {
1858 ++s;
1859 opts_prog = Perl_newSVpvf(aTHX_
1860 "Config::config_vars(qw%c%s%c)",
1861 0, s, 0);
1862 s += strlen(s);
1863 }
1864 av_push(PL_preambleav, opts_prog);
1865 /* don't look for script or read stdin */
1866 scriptname = BIT_BUCKET;
1867 goto reswitch;
6224f72b 1868 }
6224f72b 1869 case 'x':
3280af22 1870 PL_doextract = TRUE;
6224f72b 1871 s++;
304334da 1872 if (*s)
f4c556ac 1873 cddir = s;
6224f72b
GS
1874 break;
1875 case 0:
1876 break;
1877 case '-':
1878 if (!*++s || isSPACE(*s)) {
1879 argc--,argv++;
1880 goto switch_end;
1881 }
1882 /* catch use of gnu style long options */
1883 if (strEQ(s, "version")) {
dd374669 1884 s = (char *)"v";
6224f72b
GS
1885 goto reswitch;
1886 }
1887 if (strEQ(s, "help")) {
dd374669 1888 s = (char *)"h";
6224f72b
GS
1889 goto reswitch;
1890 }
1891 s--;
1892 /* FALL THROUGH */
1893 default:
cea2e8a9 1894 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1895 }
1896 }
c7030b81
NC
1897 }
1898
6224f72b 1899 switch_end:
54310121 1900
c7030b81
NC
1901 {
1902 char *s;
1903
f675dbe5
CB
1904 if (
1905#ifndef SECURE_INTERNAL_GETENV
1906 !PL_tainting &&
1907#endif
cf756827 1908 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1909 {
74288ac8
GS
1910 while (isSPACE(*s))
1911 s++;
317ea90d 1912 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1913 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1914 PL_tainting = TRUE;
317ea90d
MS
1915 PL_taint_warn = FALSE;
1916 }
74288ac8 1917 else {
bd61b366 1918 char *popt_copy = NULL;
74288ac8 1919 while (s && *s) {
54913509 1920 const char *d;
74288ac8
GS
1921 while (isSPACE(*s))
1922 s++;
1923 if (*s == '-') {
1924 s++;
1925 if (isSPACE(*s))
1926 continue;
1927 }
4ea8f8fb 1928 d = s;
74288ac8
GS
1929 if (!*s)
1930 break;
f0d36289 1931 if (!strchr("CDIMUdmtw", *s))
cea2e8a9 1932 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1933 while (++s && *s) {
1934 if (isSPACE(*s)) {
cf756827 1935 if (!popt_copy) {
bfa6c418
NC
1936 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1937 s = popt_copy + (s - d);
1938 d = popt_copy;
cf756827 1939 }
4ea8f8fb
MS
1940 *s++ = '\0';
1941 break;
1942 }
1943 }
1c4db469 1944 if (*d == 't') {
317ea90d
MS
1945 if( !PL_tainting ) {
1946 PL_taint_warn = TRUE;
1947 PL_tainting = TRUE;
1948 }
1c4db469 1949 } else {
97bd5664 1950 moreswitches(d);
1c4db469 1951 }
6224f72b 1952 }
6224f72b
GS
1953 }
1954 }
c7030b81 1955 }
a0d0e21e 1956
20ef40cf
GA
1957#ifdef USE_SITECUSTOMIZE
1958 if (!minus_f) {
29a861e7
NC
1959 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1960 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
1961 }
1962#endif
1963
6224f72b
GS
1964 if (!scriptname)
1965 scriptname = argv[0];
3280af22 1966 if (PL_e_script) {
6224f72b
GS
1967 argc++,argv--;
1968 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1969 }
bd61b366 1970 else if (scriptname == NULL) {
6224f72b
GS
1971#ifdef MSDOS
1972 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1973 moreswitches("h");
6224f72b
GS
1974#endif
1975 scriptname = "-";
1976 }
1977
b7975bdd
NC
1978 /* Set $^X early so that it can be used for relocatable paths in @INC */
1979 assert (!PL_tainted);
1980 TAINT;
1981 S_set_caret_X(aTHX);
1982 TAINT_NOT;
a26c0e28
NC
1983 init_perllib(0);
1984 init_perllib(INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
6224f72b 1985
a52eba0e 1986 {
f20b2998 1987 bool suidscript = FALSE;
829372d3 1988
cc69b689 1989 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1990
2f9285f8 1991 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1992 linestr_sv, rsfp);
6224f72b 1993
64ca3a65 1994#ifndef PERL_MICRO
a52eba0e
NC
1995# if defined(SIGCHLD) || defined(SIGCLD)
1996 {
1997# ifndef SIGCHLD
1998# define SIGCHLD SIGCLD
1999# endif
2000 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2001 if (sigstate == (Sighandler_t) SIG_IGN) {
2002 if (ckWARN(WARN_SIGNAL))
2003 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2004 "Can't ignore signal CHLD, forcing to default");
2005 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2006 }
0b5b802d 2007 }
a52eba0e 2008# endif
64ca3a65 2009#endif
0b5b802d 2010
a52eba0e 2011 if (PL_doextract
bf4acbe4 2012#ifdef MACOS_TRADITIONAL
a52eba0e 2013 || gMacPerl_AlwaysExtract
bf4acbe4 2014#endif
a52eba0e 2015 ) {
faef540c 2016
f20b2998 2017 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2018 setuid scripts. */
2019 forbid_setid('x', suidscript);
f20b2998 2020 /* Hence you can't get here if suidscript is true */
faef540c 2021
2f9285f8 2022 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2023 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2024 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2025 }
f4c556ac 2026 }
6224f72b 2027
ea726b52 2028 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2029 CvUNIQUE_on(PL_compcv);
2030
dd2155a4 2031 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2032
dd69841b
BB
2033 PL_isarev = newHV();
2034
0c4f7ff0 2035 boot_core_PerlIO();
6224f72b 2036 boot_core_UNIVERSAL();
09bef843 2037 boot_core_xsutils();
e1a479c5 2038 boot_core_mro();
6224f72b
GS
2039
2040 if (xsinit)
acfe0abc 2041 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2042#ifndef PERL_MICRO
d0d72822 2043#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2044 init_os_extras();
6224f72b 2045#endif
64ca3a65 2046#endif
6224f72b 2047
29209bc5 2048#ifdef USE_SOCKS
1b9c9cf5
DH
2049# ifdef HAS_SOCKS5_INIT
2050 socks5_init(argv[0]);
2051# else
29209bc5 2052 SOCKSinit(argv[0]);
1b9c9cf5 2053# endif
ac27b0f5 2054#endif
29209bc5 2055
6224f72b
GS
2056 init_predump_symbols();
2057 /* init_postdump_symbols not currently designed to be called */
2058 /* more than once (ENV isn't cleared first, for example) */
2059 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2060 if (!PL_do_undump)
6224f72b
GS
2061 init_postdump_symbols(argc,argv,env);
2062
27da23d5
JH
2063 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2064 * or explicitly in some platforms.
085a54d9 2065 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2066 * look like the user wants to use UTF-8. */
a0fd4948 2067#if defined(__SYMBIAN32__)
27da23d5
JH
2068 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2069#endif
06e66572
JH
2070 if (PL_unicode) {
2071 /* Requires init_predump_symbols(). */
a05d7ebb 2072 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2073 IO* io;
2074 PerlIO* fp;
2075 SV* sv;
2076
a05d7ebb 2077 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2078 * and the default open disciplines. */
a05d7ebb
JH
2079 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2080 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2081 (fp = IoIFP(io)))
2082 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2083 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2084 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2085 (fp = IoOFP(io)))
2086 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2087 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2088 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2089 (fp = IoOFP(io)))
2090 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2091 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2092 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2093 SVt_PV)))) {
a05d7ebb
JH
2094 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2095 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2096 if (in) {
2097 if (out)
76f68e9b 2098 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2099 else
76f68e9b 2100 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2101 }
2102 else if (out)
76f68e9b 2103 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2104 SvSETMAGIC(sv);
2105 }
b310b053
JH
2106 }
2107 }
2108
c7030b81
NC
2109 {
2110 const char *s;
4ffa73a3
JH
2111 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2112 if (strEQ(s, "unsafe"))
2113 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2114 else if (strEQ(s, "safe"))
2115 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2116 else
2117 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2118 }
c7030b81 2119 }
4ffa73a3 2120
81d86705 2121#ifdef PERL_MAD
c7030b81
NC
2122 {
2123 const char *s;
81d86705
NC
2124 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2125 PL_madskills = 1;
2126 PL_minus_c = 1;
2127 if (!s || !s[0])
2128 PL_xmlfp = PerlIO_stdout();
2129 else {
2130 PL_xmlfp = PerlIO_open(s, "w");
2131 if (!PL_xmlfp)
2132 Perl_croak(aTHX_ "Can't open %s", s);
2133 }
1a9a51d4 2134 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2135 }
c7030b81
NC
2136 }
2137
2138 {
2139 const char *s;
81d86705
NC
2140 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2141 PL_madskills = atoi(s);
1a9a51d4 2142 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2143 }
c7030b81 2144 }
81d86705
NC
2145#endif
2146
5486870f 2147 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2148 PL_subname = newSVpvs("main");
6224f72b 2149
5486870f
DM
2150 if (add_read_e_script)
2151 filter_add(read_e_script, NULL);
2152
6224f72b
GS
2153 /* now parse the script */
2154
93189314 2155 SETERRNO(0,SS_NORMAL);
bf4acbe4 2156#ifdef MACOS_TRADITIONAL
13765c85 2157 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
bf4acbe4
GS
2158 if (PL_minus_c)
2159 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2160 else {
2161 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2162 MacPerl_MPWFileName(PL_origfilename));
2163 }
2164 }
2165#else
13765c85 2166 if (yyparse() || PL_parser->error_count) {
3280af22 2167 if (PL_minus_c)
cea2e8a9 2168 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2169 else {
cea2e8a9 2170 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2171 PL_origfilename);
6224f72b
GS
2172 }
2173 }
bf4acbe4 2174#endif
57843af0 2175 CopLINE_set(PL_curcop, 0);
3280af22 2176 PL_curstash = PL_defstash;
3280af22
NIS
2177 if (PL_e_script) {
2178 SvREFCNT_dec(PL_e_script);
a0714e2c 2179 PL_e_script = NULL;
6224f72b
GS
2180 }
2181
3280af22 2182 if (PL_do_undump)
6224f72b
GS
2183 my_unexec();
2184
57843af0
GS
2185 if (isWARN_ONCE) {
2186 SAVECOPFILE(PL_curcop);
2187 SAVECOPLINE(PL_curcop);
3280af22 2188 gv_check(PL_defstash);
57843af0 2189 }
6224f72b
GS
2190
2191 LEAVE;
2192 FREETMPS;
2193
2194#ifdef MYMALLOC
f6a607bc
RGS
2195 {
2196 const char *s;
6224f72b
GS
2197 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2198 dump_mstats("after compilation:");
f6a607bc 2199 }
6224f72b
GS
2200#endif
2201
2202 ENTER;
3280af22 2203 PL_restartop = 0;
312caa8e 2204 return NULL;
6224f72b
GS
2205}
2206
954c1994
GS
2207/*
2208=for apidoc perl_run
2209
2210Tells a Perl interpreter to run. See L<perlembed>.
2211
2212=cut
2213*/
2214
6224f72b 2215int
0cb96387 2216perl_run(pTHXx)
6224f72b 2217{
97aff369 2218 dVAR;
6224f72b 2219 I32 oldscope;
14dd3ad8 2220 int ret = 0;
db36c5a1 2221 dJMPENV;
6224f72b 2222
7918f24d
NC
2223 PERL_ARGS_ASSERT_PERL_RUN;
2224#ifndef MULTIPLICITY
ed6c66dd 2225 PERL_UNUSED_ARG(my_perl);
7918f24d 2226#endif
9d4ba2ae 2227
3280af22 2228 oldscope = PL_scopestack_ix;
96e176bf
CL
2229#ifdef VMS
2230 VMSISH_HUSHED = 0;
2231#endif
6224f72b 2232
14dd3ad8 2233 JMPENV_PUSH(ret);
6224f72b
GS
2234 switch (ret) {
2235 case 1:
2236 cxstack_ix = -1; /* start context stack again */
312caa8e 2237 goto redo_body;
14dd3ad8 2238 case 0: /* normal completion */
14dd3ad8
GS
2239 redo_body:
2240 run_body(oldscope);
14dd3ad8
GS
2241 /* FALL THROUGH */
2242 case 2: /* my_exit() */
3280af22 2243 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2244 LEAVE;
2245 FREETMPS;
3280af22 2246 PL_curstash = PL_defstash;
3a1ee7e8 2247 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2248 PL_endav && !PL_minus_c)
2249 call_list(oldscope, PL_endav);
6224f72b
GS
2250#ifdef MYMALLOC
2251 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2252 dump_mstats("after execution: ");
2253#endif
37038d91 2254 ret = STATUS_EXIT;
14dd3ad8 2255 break;
6224f72b 2256 case 3:
312caa8e
CS
2257 if (PL_restartop) {
2258 POPSTACK_TO(PL_mainstack);
2259 goto redo_body;
6224f72b 2260 }
bf49b057 2261 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2262 FREETMPS;
14dd3ad8
GS
2263 ret = 1;
2264 break;
6224f72b
GS
2265 }
2266
14dd3ad8
GS
2267 JMPENV_POP;
2268 return ret;
312caa8e
CS
2269}
2270
dd374669 2271STATIC void
14dd3ad8
GS
2272S_run_body(pTHX_ I32 oldscope)
2273{
97aff369 2274 dVAR;
6224f72b 2275 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2276 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2277
3280af22 2278 if (!PL_restartop) {
81d86705
NC
2279#ifdef PERL_MAD
2280 if (PL_xmlfp) {
2281 xmldump_all();
2282 exit(0); /* less likely to core dump than my_exit(0) */
2283 }
2284#endif
6224f72b 2285 DEBUG_x(dump_all());
cf2782cd 2286#ifdef DEBUGGING
ecae49c0
NC
2287 if (!DEBUG_q_TEST)
2288 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2289#endif
6224f72b 2290
3280af22 2291 if (PL_minus_c) {
bf4acbe4 2292#ifdef MACOS_TRADITIONAL
e69a2255
JH
2293 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2294 (gMacPerl_ErrorFormat ? "# " : ""),
2295 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2296#else
bf49b057 2297 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2298#endif
6224f72b
GS
2299 my_exit(0);
2300 }
3280af22 2301 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2302 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2303 if (PL_initav)
2304 call_list(oldscope, PL_initav);
f1fac472
NC
2305#ifdef PERL_DEBUG_READONLY_OPS
2306 Perl_pending_Slabs_to_ro(aTHX);
2307#endif
6224f72b
GS
2308 }
2309
2310 /* do it */
2311
3280af22 2312 if (PL_restartop) {
533c011a 2313 PL_op = PL_restartop;
3280af22 2314 PL_restartop = 0;
cea2e8a9 2315 CALLRUNOPS(aTHX);
6224f72b 2316 }
3280af22
NIS
2317 else if (PL_main_start) {
2318 CvDEPTH(PL_main_cv) = 1;
533c011a 2319 PL_op = PL_main_start;
cea2e8a9 2320 CALLRUNOPS(aTHX);
6224f72b 2321 }
f6b3007c
JH
2322 my_exit(0);
2323 /* NOTREACHED */
6224f72b
GS
2324}
2325
954c1994 2326/*
ccfc67b7
JH
2327=head1 SV Manipulation Functions
2328
954c1994
GS
2329=for apidoc p||get_sv
2330
64ace3f8
NC
2331Returns the SV of the specified Perl scalar. C<flags> are passed to
2332C<gv_fetchpv>. If C<GV_ADD> is set and the
2333Perl variable does not exist then it will be created. If C<flags> is zero
2334and the variable does not exist then NULL is returned.
954c1994
GS
2335
2336=cut
2337*/
2338
6224f72b 2339SV*
64ace3f8 2340Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2341{
2342 GV *gv;
7918f24d
NC
2343
2344 PERL_ARGS_ASSERT_GET_SV;
2345
64ace3f8 2346 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2347 if (gv)
2348 return GvSV(gv);
a0714e2c 2349 return NULL;
6224f72b
GS
2350}
2351
954c1994 2352/*
ccfc67b7
JH
2353=head1 Array Manipulation Functions
2354
954c1994
GS
2355=for apidoc p||get_av
2356
cbfd0a87
NC
2357Returns the AV of the specified Perl array. C<flags> are passed to
2358C<gv_fetchpv>. If C<GV_ADD> is set and the
2359Perl variable does not exist then it will be created. If C<flags> is zero
2360and the variable does not exist then NULL is returned.
954c1994
GS
2361
2362=cut
2363*/
2364
6224f72b 2365AV*
cbfd0a87 2366Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2367{
cbfd0a87 2368 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2369
2370 PERL_ARGS_ASSERT_GET_AV;
2371
cbfd0a87 2372 if (flags)
6224f72b
GS
2373 return GvAVn(gv);
2374 if (gv)
2375 return GvAV(gv);
7d49f689 2376 return NULL;
6224f72b
GS
2377}
2378
954c1994 2379/*
ccfc67b7
JH
2380=head1 Hash Manipulation Functions
2381
954c1994
GS
2382=for apidoc p||get_hv
2383
6673a63c
NC
2384Returns the HV of the specified Perl hash. C<flags> are passed to
2385C<gv_fetchpv>. If C<GV_ADD> is set and the
2386Perl variable does not exist then it will be created. If C<flags> is zero
2387and the variable does not exist then NULL is returned.
954c1994
GS
2388
2389=cut
2390*/
2391
6224f72b 2392HV*
6673a63c 2393Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2394{
6673a63c 2395 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2396
2397 PERL_ARGS_ASSERT_GET_HV;
2398
6673a63c 2399 if (flags)
a0d0e21e
LW
2400 return GvHVn(gv);
2401 if (gv)
2402 return GvHV(gv);
5c284bb0 2403 return NULL;
a0d0e21e
LW
2404}
2405
954c1994 2406/*
ccfc67b7
JH
2407=head1 CV Manipulation Functions
2408
780a5241
NC
2409=for apidoc p||get_cvn_flags
2410
2411Returns the CV of the specified Perl subroutine. C<flags> are passed to
2412C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2413exist then it will be declared (which has the same effect as saying
2414C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2415then NULL is returned.
2416
954c1994
GS
2417=for apidoc p||get_cv
2418
780a5241 2419Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2420
2421=cut
2422*/
2423
a0d0e21e 2424CV*
780a5241 2425Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2426{
780a5241 2427 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2428 /* XXX this is probably not what they think they're getting.
2429 * It has the same effect as "sub name;", i.e. just a forward
2430 * declaration! */
7918f24d
NC
2431
2432 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2433
780a5241 2434 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2435 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2436 return newSUB(start_subparse(FALSE, 0),
780a5241 2437 newSVOP(OP_CONST, 0, sv),
5f66b61c 2438 NULL, NULL);
780a5241 2439 }
a0d0e21e 2440 if (gv)
8ebc5c01 2441 return GvCVu(gv);
601f1833 2442 return NULL;
a0d0e21e
LW
2443}
2444
2c67934f
NC
2445/* Nothing in core calls this now, but we can't replace it with a macro and
2446 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2447CV*
2448Perl_get_cv(pTHX_ const char *name, I32 flags)
2449{
7918f24d
NC
2450 PERL_ARGS_ASSERT_GET_CV;
2451
780a5241
NC
2452 return get_cvn_flags(name, strlen(name), flags);
2453}
2454
79072805
LW
2455/* Be sure to refetch the stack pointer after calling these routines. */
2456
954c1994 2457/*
ccfc67b7
JH
2458
2459=head1 Callback Functions
2460
954c1994
GS
2461=for apidoc p||call_argv
2462
2463Performs a callback to the specified Perl sub. See L<perlcall>.
2464
2465=cut
2466*/
2467
a0d0e21e 2468I32
8f42b153 2469Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2470
8ac85365
NIS
2471 /* See G_* flags in cop.h */
2472 /* null terminated arg list */
8990e307 2473{
97aff369 2474 dVAR;
a0d0e21e 2475 dSP;
8990e307 2476
7918f24d
NC
2477 PERL_ARGS_ASSERT_CALL_ARGV;
2478
924508f0 2479 PUSHMARK(SP);
a0d0e21e 2480 if (argv) {
8990e307 2481 while (*argv) {
6e449a3a 2482 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2483 argv++;
2484 }
a0d0e21e 2485 PUTBACK;
8990e307 2486 }
864dbfa3 2487 return call_pv(sub_name, flags);
8990e307
LW
2488}
2489
954c1994
GS
2490/*
2491=for apidoc p||call_pv
2492
2493Performs a callback to the specified Perl sub. See L<perlcall>.
2494
2495=cut
2496*/
2497
a0d0e21e 2498I32
864dbfa3 2499Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2500 /* name of the subroutine */
2501 /* See G_* flags in cop.h */
a0d0e21e 2502{
7918f24d
NC
2503 PERL_ARGS_ASSERT_CALL_PV;
2504
0da0e728 2505 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2506}
2507
954c1994
GS
2508/*
2509=for apidoc p||call_method
2510
2511Performs a callback to the specified Perl method. The blessed object must
2512be on the stack. See L<perlcall>.
2513
2514=cut
2515*/
2516
a0d0e21e 2517I32
864dbfa3 2518Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2519 /* name of the subroutine */
2520 /* See G_* flags in cop.h */
a0d0e21e 2521{
7918f24d
NC
2522 PERL_ARGS_ASSERT_CALL_METHOD;
2523
968b3946 2524 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2525}
2526
2527/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2528/*
2529=for apidoc p||call_sv
2530
2531Performs a callback to the Perl sub whose name is in the SV. See
2532L<perlcall>.
2533
2534=cut
2535*/
2536
a0d0e21e 2537I32
001d637e 2538Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2539 /* See G_* flags in cop.h */
a0d0e21e 2540{
27da23d5 2541 dVAR; dSP;
a0d0e21e 2542 LOGOP myop; /* fake syntax tree node */
968b3946 2543 UNOP method_op;
aa689395 2544 I32 oldmark;
8ea43dc8 2545 VOL I32 retval = 0;
a0d0e21e 2546 I32 oldscope;
54310121 2547 bool oldcatch = CATCH_GET;
6224f72b 2548 int ret;
c4420975 2549 OP* const oldop = PL_op;
db36c5a1 2550 dJMPENV;
1e422769 2551
7918f24d
NC
2552 PERL_ARGS_ASSERT_CALL_SV;
2553
a0d0e21e
LW
2554 if (flags & G_DISCARD) {
2555 ENTER;
2556 SAVETMPS;
2557 }
2f8edad0
NC
2558 if (!(flags & G_WANT)) {
2559 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2560 */
2561 flags |= G_SCALAR;
2562 }
a0d0e21e 2563
aa689395 2564 Zero(&myop, 1, LOGOP);
5f66b61c 2565 myop.op_next = NULL;
f51d4af5 2566 if (!(flags & G_NOARGS))
aa689395 2567 myop.op_flags |= OPf_STACKED;
4f911530 2568 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2569 SAVEOP();
533c011a 2570 PL_op = (OP*)&myop;
aa689395 2571
3280af22
NIS
2572 EXTEND(PL_stack_sp, 1);
2573 *++PL_stack_sp = sv;
aa689395 2574 oldmark = TOPMARK;
3280af22 2575 oldscope = PL_scopestack_ix;
a0d0e21e 2576
3280af22 2577 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2578 /* Handle first BEGIN of -d. */
3280af22 2579 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2580 /* Try harder, since this may have been a sighandler, thus
2581 * curstash may be meaningless. */
ea726b52 2582 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2583 && !(flags & G_NODEBUG))
533c011a 2584 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2585
968b3946
GS
2586 if (flags & G_METHOD) {
2587 Zero(&method_op, 1, UNOP);
2588 method_op.op_next = PL_op;
2589 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2590 method_op.op_type = OP_METHOD;
968b3946 2591 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2592 myop.op_type = OP_ENTERSUB;
f39d0b86 2593 PL_op = (OP*)&method_op;
968b3946
GS
2594 }
2595
312caa8e 2596 if (!(flags & G_EVAL)) {
0cdb2077 2597 CATCH_SET(TRUE);
d6f07c05 2598 CALL_BODY_SUB((OP*)&myop);
312caa8e 2599 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2600 CATCH_SET(oldcatch);
312caa8e
CS
2601 }
2602 else {
d78bda3d 2603 myop.op_other = (OP*)&myop;
3280af22 2604 PL_markstack_ptr--;
edb2152a 2605 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2606 PL_markstack_ptr++;
a0d0e21e 2607
14dd3ad8 2608 JMPENV_PUSH(ret);
edb2152a 2609
6224f72b
GS
2610 switch (ret) {
2611 case 0:
14dd3ad8 2612 redo_body:
d6f07c05 2613 CALL_BODY_SUB((OP*)&myop);
312caa8e 2614 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2615 if (!(flags & G_KEEPERR)) {
ab69dbc2 2616 CLEAR_ERRSV();
8433848b 2617 }
a0d0e21e 2618 break;
6224f72b 2619 case 1:
f86702cc 2620 STATUS_ALL_FAILURE;
a0d0e21e 2621 /* FALL THROUGH */
6224f72b 2622 case 2:
a0d0e21e 2623 /* my_exit() was called */
3280af22 2624 PL_curstash = PL_defstash;
a0d0e21e 2625 FREETMPS;
14dd3ad8 2626 JMPENV_POP;
cc3604b1 2627 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2628 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2629 my_exit_jump();
a0d0e21e 2630 /* NOTREACHED */
6224f72b 2631 case 3:
3280af22 2632 if (PL_restartop) {
533c011a 2633 PL_op = PL_restartop;
3280af22 2634 PL_restartop = 0;
312caa8e 2635 goto redo_body;
a0d0e21e 2636 }
3280af22 2637 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2638 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2639 retval = 0;
2640 else {
2641 retval = 1;
3280af22 2642 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2643 }
312caa8e 2644 break;
a0d0e21e 2645 }
a0d0e21e 2646
edb2152a
NC
2647 if (PL_scopestack_ix > oldscope)
2648 delete_eval_scope();
14dd3ad8 2649 JMPENV_POP;
a0d0e21e 2650 }
1e422769 2651
a0d0e21e 2652 if (flags & G_DISCARD) {
3280af22 2653 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2654 retval = 0;
2655 FREETMPS;
2656 LEAVE;
2657 }
533c011a 2658 PL_op = oldop;
a0d0e21e
LW
2659 return retval;
2660}
2661
6e72f9df 2662/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2663
954c1994
GS
2664/*
2665=for apidoc p||eval_sv
2666
2667Tells Perl to C<eval> the string in the SV.
2668
2669=cut
2670*/
2671
a0d0e21e 2672I32
864dbfa3 2673Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2674
8ac85365 2675 /* See G_* flags in cop.h */
a0d0e21e 2676{
97aff369 2677 dVAR;
924508f0 2678 dSP;
a0d0e21e 2679 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2680 VOL I32 oldmark = SP - PL_stack_base;
2681 VOL I32 retval = 0;
6224f72b 2682 int ret;
c4420975 2683 OP* const oldop = PL_op;
db36c5a1 2684 dJMPENV;
84902520 2685
7918f24d
NC
2686 PERL_ARGS_ASSERT_EVAL_SV;
2687
4633a7c4
LW
2688 if (flags & G_DISCARD) {
2689 ENTER;
2690 SAVETMPS;
2691 }
2692
462e5cf6 2693 SAVEOP();
533c011a
NIS
2694 PL_op = (OP*)&myop;
2695 Zero(PL_op, 1, UNOP);
3280af22
NIS
2696 EXTEND(PL_stack_sp, 1);
2697 *++PL_stack_sp = sv;
79072805 2698
4633a7c4
LW
2699 if (!(flags & G_NOARGS))
2700 myop.op_flags = OPf_STACKED;
5f66b61c 2701 myop.op_next = NULL;
6e72f9df 2702 myop.op_type = OP_ENTEREVAL;
4f911530 2703 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2704 if (flags & G_KEEPERR)
2705 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2706
dedbcade
DM
2707 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2708 * before a PUSHEVAL, which corrupts the stack after a croak */
2709 TAINT_PROPER("eval_sv()");
2710
14dd3ad8 2711 JMPENV_PUSH(ret);
6224f72b
GS
2712 switch (ret) {
2713 case 0:
14dd3ad8 2714 redo_body:
d6f07c05 2715 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2716 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2717 if (!(flags & G_KEEPERR)) {
ab69dbc2 2718 CLEAR_ERRSV();
8433848b 2719 }
4633a7c4 2720 break;
6224f72b 2721 case 1:
f86702cc 2722 STATUS_ALL_FAILURE;
4633a7c4 2723 /* FALL THROUGH */
6224f72b 2724 case 2:
4633a7c4 2725 /* my_exit() was called */
3280af22 2726 PL_curstash = PL_defstash;
4633a7c4 2727 FREETMPS;
14dd3ad8 2728 JMPENV_POP;
cc3604b1 2729 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2730 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2731 my_exit_jump();
4633a7c4 2732 /* NOTREACHED */
6224f72b 2733 case 3:
3280af22 2734 if (PL_restartop) {
533c011a 2735 PL_op = PL_restartop;
3280af22 2736 PL_restartop = 0;
312caa8e 2737 goto redo_body;
4633a7c4 2738 }
3280af22 2739 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2740 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2741 retval = 0;
2742 else {
2743 retval = 1;
3280af22 2744 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2745 }
312caa8e 2746 break;
4633a7c4
LW
2747 }
2748
14dd3ad8 2749 JMPENV_POP;
4633a7c4 2750 if (flags & G_DISCARD) {
3280af22 2751 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2752 retval = 0;
2753 FREETMPS;
2754 LEAVE;
2755 }
533c011a 2756 PL_op = oldop;
4633a7c4
LW
2757 return retval;
2758}
2759
954c1994
GS
2760/*
2761=for apidoc p||eval_pv
2762
2763Tells Perl to C<eval> the given string and return an SV* result.
2764
2765=cut
2766*/
2767
137443ea 2768SV*
864dbfa3 2769Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2770{
97aff369 2771 dVAR;
137443ea
PP
2772 dSP;
2773 SV* sv = newSVpv(p, 0);
2774
7918f24d
NC
2775 PERL_ARGS_ASSERT_EVAL_PV;
2776
864dbfa3 2777 eval_sv(sv, G_SCALAR);
137443ea
PP
2778 SvREFCNT_dec(sv);
2779
2780 SPAGAIN;
2781 sv = POPs;
2782 PUTBACK;
2783
2d8e6c8d 2784 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2785 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2786 }
137443ea
PP
2787
2788 return sv;
2789}
2790
4633a7c4
LW
2791/* Require a module. */
2792
954c1994 2793/*
ccfc67b7
JH
2794=head1 Embedding Functions
2795
954c1994
GS
2796=for apidoc p||require_pv
2797
7d3fb230
BS
2798Tells Perl to C<require> the file named by the string argument. It is
2799analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2800implemented that way; consider using load_module instead.
954c1994 2801
7d3fb230 2802=cut */
954c1994 2803
4633a7c4 2804void
864dbfa3 2805Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2806{
97aff369 2807 dVAR;
d3acc0f7 2808 dSP;
97aff369 2809 SV* sv;
7918f24d
NC
2810
2811 PERL_ARGS_ASSERT_REQUIRE_PV;
2812
e788e7d3 2813 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2814 PUTBACK;
be41e5d9
NC
2815 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2816 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2817 SPAGAIN;
2818 POPSTACK;
79072805
LW
2819}
2820
76e3520e 2821STATIC void
e1ec3a88 2822S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2823{
ab821d7f 2824 /* This message really ought to be max 23 lines.
75c72d73 2825 * Removed -h because the user already knows that option. Others? */
fb73857a 2826
27da23d5 2827 static const char * const usage_msg[] = {
aefc56c5 2828"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2829"-a autosplit mode with -n or -p (splits $_ into @F)",
2830"-C[number/list] enables the listed Unicode features",
2831"-c check syntax only (runs BEGIN and CHECK blocks)",
2832"-d[:debugger] run program under debugger",
2833"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2834"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2835"-E program like -e, but enables all optional features",
aefc56c5 2836"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2837"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2838"-i[extension] edit <> files in place (makes backup if extension supplied)",
2839"-Idirectory specify @INC/#include directory (several -I's allowed)",
2840"-l[octal] enable line ending processing, specifies line terminator",
2841"-[mM][-]module execute \"use/no module...\" before executing program",
2842"-n assume \"while (<>) { ... }\" loop around program",
2843"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2844"-s enable rudimentary parsing for switches after programfile",
2845"-S look for programfile using PATH environment variable",
2846"-t enable tainting warnings",
2847"-T enable tainting checks",
2848"-u dump core after parsing program",
2849"-U allow unsafe operations",
2850"-v print version, subversion (includes VERY IMPORTANT perl info)",
2851"-V[:variable] print configuration summary (or a single Config.pm variable)",
2852"-w enable many useful warnings (RECOMMENDED)",
2853"-W enable all warnings",
2854"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2855"-X disable all warnings",
fb73857a
PP
2856"\n",
2857NULL
2858};
27da23d5 2859 const char * const *p = usage_msg;
fb73857a 2860
7918f24d
NC
2861 PERL_ARGS_ASSERT_USAGE;
2862
b0e47665
GS
2863 PerlIO_printf(PerlIO_stdout(),
2864 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2865 name);
fb73857a 2866 while (*p)
b0e47665 2867 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2868}
2869
b4ab917c
DM
2870/* convert a string of -D options (or digits) into an int.
2871 * sets *s to point to the char after the options */
2872
2873#ifdef DEBUGGING
2874int
e1ec3a88 2875Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2876{
27da23d5 2877 static const char * const usage_msgd[] = {
e6e64d9b
JC
2878 " Debugging flag values: (see also -d)",
2879 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2880 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2881 " l Context (loop) stack processing",
2882 " t Trace execution",
2883 " o Method and overloading resolution",
2884 " c String/numeric conversions",
4c84d7f2 2885 " P Print profiling info, source file input state",
d7a2c63c 2886 " m Memory and SV allocation",
e6e64d9b
JC
2887 " f Format processing",
2888 " r Regular expression parsing and execution",
2889 " x Syntax tree dump",
3679267a 2890 " u Tainting checks",
e6e64d9b
JC
2891 " H Hash dump -- usurps values()",
2892 " X Scratchpad allocation",
2893 " D Cleaning up",
e6e64d9b
JC
2894 " T Tokenising",
2895 " R Include reference counts of dumped variables (eg when using -Ds)",
2896 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2897 " v Verbose: use in conjunction with other flags",
2898 " C Copy On Write",
2899 " A Consistency checks on internal structures",
3679267a 2900 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2901 NULL
2902 };
b4ab917c 2903 int i = 0;
7918f24d
NC
2904
2905 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2906
b4ab917c
DM
2907 if (isALPHA(**s)) {
2908 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2909 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2910
2911 for (; isALNUM(**s); (*s)++) {
c4420975 2912 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2913 if (d)
2914 i |= 1 << (d - debopts);
2915 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2916 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2917 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2918 }
2919 }
e6e64d9b 2920 else if (isDIGIT(**s)) {
b4ab917c
DM
2921 i = atoi(*s);
2922 for (; isALNUM(**s); (*s)++) ;
2923 }
ddcf8bc1 2924 else if (givehelp) {
06e869a4 2925 const char *const *p = usage_msgd;
e6e64d9b
JC
2926 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2927 }
b4ab917c
DM
2928# ifdef EBCDIC
2929 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2930 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2931 "-Dp not implemented on this platform\n");
2932# endif
2933 return i;
2934}
2935#endif
2936
79072805
LW
2937/* This routine handles any switches that can be given during run */
2938
c7030b81
NC
2939const char *
2940Perl_moreswitches(pTHX_ const char *s)
79072805 2941{
27da23d5 2942 dVAR;
84c133a0 2943 UV rschar;
0544e6df 2944 const char option = *s; /* used to remember option in -m/-M code */
79072805 2945
7918f24d
NC
2946 PERL_ARGS_ASSERT_MORESWITCHES;
2947
79072805
LW
2948 switch (*s) {
2949 case '0':
a863c7d1 2950 {
f2095865 2951 I32 flags = 0;
a3b680e6 2952 STRLEN numlen;
f2095865
JH
2953
2954 SvREFCNT_dec(PL_rs);
2955 if (s[1] == 'x' && s[2]) {
a3b680e6 2956 const char *e = s+=2;
f2095865
JH
2957 U8 *tmps;
2958
a3b680e6
AL
2959 while (*e)
2960 e++;
f2095865
JH
2961 numlen = e - s;
2962 flags = PERL_SCAN_SILENT_ILLDIGIT;
2963 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2964 if (s + numlen < e) {
2965 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2966 numlen = 0;
2967 s--;
2968 }
396482e1 2969 PL_rs = newSVpvs("");
c5661c80 2970 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2971 tmps = (U8*)SvPVX(PL_rs);
2972 uvchr_to_utf8(tmps, rschar);
2973 SvCUR_set(PL_rs, UNISKIP(rschar));
2974 SvUTF8_on(PL_rs);
2975 }
2976 else {
2977 numlen = 4;
2978 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2979 if (rschar & ~((U8)~0))
2980 PL_rs = &PL_sv_undef;
2981 else if (!rschar && numlen >= 2)
396482e1 2982 PL_rs = newSVpvs("");
f2095865
JH
2983 else {
2984 char ch = (char)rschar;
2985 PL_rs = newSVpvn(&ch, 1);
2986 }
2987 }
64ace3f8 2988 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2989 return s + numlen;
a863c7d1 2990 }
46487f74 2991 case 'C':
a05d7ebb 2992 s++;
dd374669 2993 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2994 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2995 PL_utf8cache = -1;
46487f74 2996 return s;
2304df62 2997 case 'F':
3280af22 2998 PL_minus_F = TRUE;
ebce5377
RGS
2999 PL_splitstr = ++s;
3000 while (*s && !isSPACE(*s)) ++s;
e49e380e 3001 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3002 return s;
79072805 3003 case 'a':
3280af22 3004 PL_minus_a = TRUE;
79072805
LW
3005 s++;
3006 return s;
3007 case 'c':
3280af22 3008 PL_minus_c = TRUE;
79072805
LW
3009 s++;
3010 return s;
3011 case 'd':
f20b2998 3012 forbid_setid('d', FALSE);
4633a7c4 3013 s++;
2cbb2ee1
RGS
3014
3015 /* -dt indicates to the debugger that threads will be used */
3016 if (*s == 't' && !isALNUM(s[1])) {
3017 ++s;
3018 my_setenv("PERL5DB_THREADED", "1");
3019 }
3020
70c94a19
RR
3021 /* The following permits -d:Mod to accepts arguments following an =
3022 in the fashion that -MSome::Mod does. */
3023 if (*s == ':' || *s == '=') {
f85893a1
NC
3024 const char *start = ++s;
3025 const char *const end = s + strlen(s);
396482e1 3026 SV * const sv = newSVpvs("use Devel::");
f85893a1 3027
70c94a19
RR
3028 /* We now allow -d:Module=Foo,Bar */
3029 while(isALNUM(*s) || *s==':') ++s;
3030 if (*s != '=')
f85893a1 3031 sv_catpvn(sv, start, end - start);
70c94a19
RR
3032 else {
3033 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3034 /* Don't use NUL as q// delimiter here, this string goes in the
3035 * environment. */
3036 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3037 }
f85893a1 3038 s = end;
184f32ec 3039 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3040 SvREFCNT_dec(sv);
4633a7c4 3041 }
ed094faf 3042 if (!PL_perldb) {
3280af22 3043 PL_perldb = PERLDB_ALL;
a0d0e21e 3044 init_debugger();
ed094faf 3045 }
79072805
LW
3046 return s;
3047 case 'D':
0453d815 3048 {
79072805 3049#ifdef DEBUGGING
f20b2998 3050 forbid_setid('D', FALSE);
b4ab917c 3051 s++;
dd374669 3052 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3053#else /* !DEBUGGING */
0453d815 3054 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3055 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3056 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3057 for (s++; isALNUM(*s); s++) ;
79072805 3058#endif
79072805 3059 return s;
0453d815 3060 }
4633a7c4 3061 case 'h':
ac27b0f5 3062 usage(PL_origargv[0]);
7ca617d0 3063 my_exit(0);
79072805 3064 case 'i':
43c5f42d 3065 Safefree(PL_inplace);
c030f24b
GH
3066#if defined(__CYGWIN__) /* do backup extension automagically */
3067 if (*(s+1) == '\0') {
c86a4f2e 3068 PL_inplace = savepvs(".bak");
c030f24b
GH
3069 return s+1;
3070 }
3071#endif /* __CYGWIN__ */
5ef5d758 3072 {
d4c19fe8 3073 const char * const start = ++s;
5ef5d758
NC
3074 while (*s && !isSPACE(*s))
3075 ++s;
3076
3077 PL_inplace = savepvn(start, s - start);
3078 }
7b8d334a 3079 if (*s) {
5ef5d758 3080 ++s;
7b8d334a 3081 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3082 s++;
7b8d334a 3083 }
fb73857a 3084 return s;
4e49a025 3085 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3086 forbid_setid('I', FALSE);
fb73857a
PP
3087 ++s;
3088 while (*s && isSPACE(*s))
3089 ++s;
3090 if (*s) {
c7030b81 3091 const char *e, *p;
0df16ed7
GS
3092 p = s;
3093 /* ignore trailing spaces (possibly followed by other switches) */
3094 do {
3095 for (e = p; *e && !isSPACE(*e); e++) ;
3096 p = e;
3097 while (isSPACE(*p))
3098 p++;
3099 } while (*p && *p != '-');
55b4bc1c 3100 incpush(s, e-s,
e28f3139 3101 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3102 s = p;
3103 if (*s == '-')
3104 s++;
79072805
LW
3105 }
3106 else
a67e862a 3107 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3108 return s;
79072805 3109 case 'l':
3280af22 3110 PL_minus_l = TRUE;
79072805 3111 s++;
7889fe52
NIS
3112 if (PL_ors_sv) {
3113 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3114 PL_ors_sv = NULL;
7889fe52 3115 }
79072805 3116 if (isDIGIT(*s)) {
53305cf1 3117 I32 flags = 0;
a3b680e6 3118 STRLEN numlen;
396482e1 3119 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3120 numlen = 3 + (*s == '0');
3121 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3122 s += numlen;
3123 }
3124 else {
8bfdd7d9 3125 if (RsPARA(PL_rs)) {
396482e1 3126 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3127 }
3128 else {
8bfdd7d9 3129 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3130 }
79072805
LW
3131 }
3132 return s;
1a30305b 3133 case 'M':
f20b2998 3134 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3135 /* FALL THROUGH */
3136 case 'm':
f20b2998 3137 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3138 if (*++s) {
c7030b81 3139 const char *start;
b64cb68c 3140 const char *end;
11343788 3141 SV *sv;
e1ec3a88 3142 const char *use = "use ";
0544e6df 3143 bool colon = FALSE;
a5f75d66 3144 /* -M-foo == 'no foo' */
d0043bd1
NC
3145 /* Leading space on " no " is deliberate, to make both
3146 possibilities the same length. */
3147 if (*s == '-') { use = " no "; ++s; }
3148 sv = newSVpvn(use,4);
a5f75d66 3149 start = s;
1a30305b 3150 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3151 while(isALNUM(*s) || *s==':') {
3152 if( *s++ == ':' ) {
3153 if( *s == ':' )
3154 s++;
3155 else
3156 colon = TRUE;
3157 }
3158 }
3159 if (s == start)
3160 Perl_croak(aTHX_ "Module name required with -%c option",
3161 option);
3162 if (colon)
3163 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3164 "contains single ':'",
63da6837 3165 (int)(s - start), start, option);
b64cb68c 3166 end = s + strlen(s);
c07a80fd 3167 if (*s != '=') {
b64cb68c 3168 sv_catpvn(sv, start, end - start);
0544e6df 3169 if (option == 'm') {
c07a80fd 3170 if (*s != '\0')
cea2e8a9 3171 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3172 sv_catpvs( sv, " ()");
c07a80fd
PP
3173 }
3174 } else {
11343788 3175 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3176 /* Use NUL as q''-delimiter. */
3177 sv_catpvs(sv, " split(/,/,q\0");
3178 ++s;
3179 sv_catpvn(sv, s, end - s);
396482e1 3180 sv_catpvs(sv, "\0)");
c07a80fd 3181 }
b64cb68c 3182 s = end;
29a861e7 3183 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3184 }
3185 else
0544e6df 3186 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3187 return s;
79072805 3188 case 'n':
3280af22 3189 PL_minus_n = TRUE;
79072805
LW
3190 s++;
3191 return s;
3192 case 'p':
3280af22 3193 PL_minus_p = TRUE;
79072805
LW
3194 s++;
3195 return s;
3196 case 's':
f20b2998 3197 forbid_setid('s', FALSE);
3280af22 3198 PL_doswitches = TRUE;
79072805
LW
3199 s++;
3200 return s;
6537fe72
MS
3201 case 't':
3202 if (!PL_tainting)
22f7c9c9 3203 TOO_LATE_FOR('t');
6537fe72
MS
3204 s++;
3205 return s;
463ee0b2 3206 case 'T':
3280af22 3207 if (!PL_tainting)
22f7c9c9 3208 TOO_LATE_FOR('T');
463ee0b2
LW
3209 s++;
3210 return s;
79072805 3211 case 'u':
bf4acbe4
GS
3212#ifdef MACOS_TRADITIONAL
3213 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3214#endif
3280af22 3215 PL_do_undump = TRUE;
79072805
LW
3216 s++;
3217 return s;
3218 case 'U':
3280af22 3219 PL_unsafe = TRUE;
79072805
LW
3220 s++;
3221 return s;
3222 case 'v':
d7aa5382 3223 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3224 upg_version(PL_patchlevel, TRUE);
8e9464f1 3225#if !defined(DGUX)
46807d8e
YO
3226 {
3227 SV* level= vstringify(PL_patchlevel);
3228#ifdef PERL_PATCHNUM
23d483e2
NC
3229# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3230 SV *num = newSVpvs(PERL_PATCHNUM "*");
3231# else
3232 SV *num = newSVpvs(PERL_PATCHNUM);
3233# endif
46807d8e
YO
3234
3235 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3236 SvREFCNT_dec(level);
3237 level= num;
3238 } else {
d0a9311f 3239 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3240 SvREFCNT_dec(num);
3241 }
3242 #endif
3243 PerlIO_printf(PerlIO_stdout(),
f1f66076 3244 "\nThis is perl, %"SVf
f1f66076 3245 " built for %s",
46807d8e 3246 level,
f1f66076 3247 ARCHNAME);
46807d8e
YO
3248 SvREFCNT_dec(level);
3249 }
8e9464f1
JH
3250#else /* DGUX */
3251/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3252 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3253 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3254 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3255 PerlIO_printf(PerlIO_stdout(),
3256 Perl_form(aTHX_ " built under %s at %s %s\n",
3257 OSNAME, __DATE__, __TIME__));
3258 PerlIO_printf(PerlIO_stdout(),
3259 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3260 OSVERS));
8e9464f1 3261#endif /* !DGUX */
fb73857a
PP
3262#if defined(LOCAL_PATCH_COUNT)
3263 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3264 PerlIO_printf(PerlIO_stdout(),
3265 "\n(with %d registered patch%s, "
3266 "see perl -V for more detail)",
bb7a0f54 3267 LOCAL_PATCH_COUNT,
b0e47665 3268 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3269#endif
1a30305b 3270
b0e47665 3271 PerlIO_printf(PerlIO_stdout(),
737f4459 3272 "\n\nCopyright 1987-2009, Larry Wall\n");
eae9c151
JH
3273#ifdef MACOS_TRADITIONAL
3274 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3275 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3276 "maintained by Chris Nandor\n");
eae9c151 3277#endif
79072805 3278#ifdef MSDOS
b0e47665
GS
3279 PerlIO_printf(PerlIO_stdout(),
3280 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3281#endif
3282#ifdef DJGPP
b0e47665
GS
3283 PerlIO_printf(PerlIO_stdout(),
3284 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3285 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3286#endif
79072805 3287#ifdef OS2
b0e47665
GS
3288 PerlIO_printf(PerlIO_stdout(),
3289 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3290 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3291#endif
79072805 3292#ifdef atarist
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3295#endif
a3f9223b 3296#ifdef __BEOS__
b0e47665
GS
3297 PerlIO_printf(PerlIO_stdout(),
3298 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3299#endif
1d84e8df 3300#ifdef MPE
b0e47665 3301 PerlIO_printf(PerlIO_stdout(),
e583a879 3302 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3303#endif
9d116dd7 3304#ifdef OEMVS
b0e47665
GS
3305 PerlIO_printf(PerlIO_stdout(),
3306 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3307#endif
495c5fdc 3308#ifdef __VOS__
b0e47665 3309 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3310 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3311#endif
092bebab 3312#ifdef __OPEN_VM
b0e47665
GS
3313 PerlIO_printf(PerlIO_stdout(),
3314 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3315#endif
a1a0e61e 3316#ifdef POSIX_BC
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3319#endif
61ae2fbf 3320#ifdef __MINT__
b0e47665
GS
3321 PerlIO_printf(PerlIO_stdout(),
3322 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3323#endif
f83d2536 3324#ifdef EPOC
b0e47665 3325 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3326 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3327#endif
e1caacb4 3328#ifdef UNDER_CE
b475b3e6
JH
3329 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3330 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3331 wce_hitreturn();
3332#endif
a0fd4948 3333#ifdef __SYMBIAN32__
27da23d5
JH
3334 PerlIO_printf(PerlIO_stdout(),
3335 "Symbian port by Nokia, 2004-2005\n");
3336#endif
baed7233
DL
3337#ifdef BINARY_BUILD_NOTICE
3338 BINARY_BUILD_NOTICE;
3339#endif
b0e47665
GS
3340 PerlIO_printf(PerlIO_stdout(),
3341 "\n\
79072805 3342Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3343GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3344Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3345this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3346Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3347 my_exit(0);
79072805 3348 case 'w':
b2e5e6ba 3349 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3350 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3351 }
599cee73
PM
3352 s++;
3353 return s;
3354 case 'W':
ac27b0f5 3355 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3356 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3357 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3358 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3359 s++;
3360 return s;
3361 case 'X':
ac27b0f5 3362 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3363 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3364 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3365 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3366 s++;
3367 return s;
a0d0e21e 3368 case '*':
79072805 3369 case ' ':
d3133c89
NC
3370 while( *s == ' ' )
3371 ++s;
3372 if (s[0] == '-') /* Additional switches on #! line. */
3373 return s+1;
79072805 3374 break;
a0d0e21e 3375 case '-':
79072805 3376 case 0:
51882d45 3377#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3378 case '\r':
3379#endif
79072805
LW
3380 case '\n':
3381 case '\t':
3382 break;
aa689395
PP
3383#ifdef ALTERNATE_SHEBANG
3384 case 'S': /* OS/2 needs -S on "extproc" line. */
3385 break;
3386#endif
79072805 3387 default:
cea2e8a9 3388 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3389 }
bd61b366 3390 return NULL;
79072805
LW
3391}
3392
3393/* compliments of Tom Christiansen */
3394
3395/* unexec() can be found in the Gnu emacs distribution */
ee580363 3396/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3397
3398void
864dbfa3 3399Perl_my_unexec(pTHX)
79072805 3400{
b37c2d43 3401 PERL_UNUSED_CONTEXT;
79072805 3402#ifdef UNEXEC
b37c2d43
AL
3403 SV * prog = newSVpv(BIN_EXP, 0);
3404 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3405 int status = 1;
79072805
LW
3406 extern int etext;
3407
396482e1 3408 sv_catpvs(prog, "/perl");
396482e1 3409 sv_catpvs(file, ".perldump");
79072805 3410
ee580363
GS
3411 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3412 /* unexec prints msg to stderr in case of failure */
6ad3d225 3413 PerlProc_exit(status);
79072805 3414#else
a5f75d66
AD
3415# ifdef VMS
3416# include <lib$routines.h>
3417 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3418# elif defined(WIN32) || defined(__CYGWIN__)
3419 Perl_croak(aTHX_ "dump is not supported");
aa689395 3420# else
79072805 3421 ABORT(); /* for use with undump */
aa689395 3422# endif
a5f75d66 3423#endif
79072805
LW
3424}
3425
cb68f92d
GS
3426/* initialize curinterp */
3427STATIC void
cea2e8a9 3428S_init_interp(pTHX)
cb68f92d 3429{
97aff369 3430 dVAR;
acfe0abc
GS
3431#ifdef MULTIPLICITY
3432# define PERLVAR(var,type)
3433# define PERLVARA(var,n,type)
3434# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3435# define PERLVARI(var,type,init) aTHX->var = init;
3436# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3437# else
acfe0abc
GS
3438# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3439# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3440# endif
acfe0abc 3441# include "intrpvar.h"
acfe0abc
GS
3442# undef PERLVAR
3443# undef PERLVARA
3444# undef PERLVARI
3445# undef PERLVARIC
3446#else
3447# define PERLVAR(var,type)
3448# define PERLVARA(var,n,type)
3449# define PERLVARI(var,type,init) PL_##var = init;
3450# define PERLVARIC(var,type,init) PL_##var = init;
3451# include "intrpvar.h"
acfe0abc
GS
3452# undef PERLVAR
3453# undef PERLVARA
3454# undef PERLVARI
3455# undef PERLVARIC
cb68f92d
GS
3456#endif
3457
46ab3289
NC
3458 /* As these are inside a structure, PERLVARI isn't capable of initialising
3459 them */
6c3f0a89
NC
3460 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3461 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3462}
3463
76e3520e 3464STATIC void
cea2e8a9 3465S_init_main_stash(pTHX)
79072805 3466{
97aff369 3467 dVAR;
463ee0b2 3468 GV *gv;
6e72f9df 3469
3280af22 3470 PL_curstash = PL_defstash = newHV();
23579a14
NC
3471 /* We know that the string "main" will be in the global shared string
3472 table, so it's a small saving to use it rather than allocate another
3473 8 bytes. */
18916d0d 3474 PL_curstname = newSVpvs_share("main");
fafc274c 3475 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);