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Normalise 3 fatal pack/unpack error messages to "panic: %s"
[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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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
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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 */
4a5df386 29#include "XSUB.h"
378cc40b 30
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31#ifdef NETWARE
32#include "nwutil.h"
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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
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40#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41# ifdef I_SYS_WAIT
42# include <sys/wait.h>
43# endif
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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
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53#endif
54
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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
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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 */
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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
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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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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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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;
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101 if (!PL_curinterp) {
102 PERL_SET_INTERP(my_perl);
3db8f154 103#if defined(USE_ITHREADS)
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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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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
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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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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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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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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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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
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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);
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243 if (PL_perl_destruct_level > 0)
244 init_interp();
245#endif
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246 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
247
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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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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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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
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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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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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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
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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
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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
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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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331#ifndef PERL_MICRO
332# ifdef USE_ENVIRON_ARRAY
0631ea03 333 PL_origenviron = environ;
2f42fcb0 334# endif
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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
e8e3635e 350 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 351
27da23d5
JH
352#ifdef HAS_MMAP
353 if (!PL_mmap_page_size) {
354#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 {
356 SETERRNO(0, SS_NORMAL);
357# ifdef _SC_PAGESIZE
358 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359# else
360 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361# endif
362 if ((long) PL_mmap_page_size < 0) {
363 if (errno) {
44f8325f 364 SV * const error = ERRSV;
d4c19fe8 365 SvUPGRADE(error, SVt_PV);
0510663f 366 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
367 }
368 else
369 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
370 }
371 }
372#else
373# ifdef HAS_GETPAGESIZE
374 PL_mmap_page_size = getpagesize();
375# else
376# if defined(I_SYS_PARAM) && defined(PAGESIZE)
377 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
378# endif
379# endif
380#endif
381 if (PL_mmap_page_size <= 0)
382 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
383 (IV) PL_mmap_page_size);
384 }
385#endif /* HAS_MMAP */
386
387#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
388 PL_timesbase.tms_utime = 0;
389 PL_timesbase.tms_stime = 0;
390 PL_timesbase.tms_cutime = 0;
391 PL_timesbase.tms_cstime = 0;
392#endif
393
7d113631
NC
394 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
395
a3e6e81e 396 PL_registered_mros = newHV();
9e169432
NC
397 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
398 HvMAX(PL_registered_mros) = 0;
a3e6e81e 399
8990e307 400 ENTER;
79072805
LW
401}
402
954c1994 403/*
62375a60
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404=for apidoc nothreadhook
405
406Stub that provides thread hook for perl_destruct when there are
407no threads.
408
409=cut
410*/
411
412int
4e9e3734 413Perl_nothreadhook(pTHX)
62375a60 414{
96a5add6 415 PERL_UNUSED_CONTEXT;
62375a60
NIS
416 return 0;
417}
418
41e4abd8
NC
419#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
420void
421Perl_dump_sv_child(pTHX_ SV *sv)
422{
423 ssize_t got;
bf357333
NC
424 const int sock = PL_dumper_fd;
425 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
426 union control_un control;
427 struct msghdr msg;
808ad2d0 428 struct iovec vec[2];
bf357333 429 struct cmsghdr *cmptr;
808ad2d0
NC
430 int returned_errno;
431 unsigned char buffer[256];
41e4abd8 432
7918f24d
NC
433 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
434
bf357333 435 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
436 return;
437
438 PerlIO_flush(Perl_debug_log);
439
bf357333
NC
440 /* All these shenanigans are to pass a file descriptor over to our child for
441 it to dump out to. We can't let it hold open the file descriptor when it
442 forks, as the file descriptor it will dump to can turn out to be one end
443 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 444 be open, the wait would be forever.) */
bf357333
NC
445
446 msg.msg_control = control.control;
447 msg.msg_controllen = sizeof(control.control);
448 /* We're a connected socket so we don't need a destination */
449 msg.msg_name = NULL;
450 msg.msg_namelen = 0;
451 msg.msg_iov = vec;
808ad2d0 452 msg.msg_iovlen = 1;
bf357333
NC
453
454 cmptr = CMSG_FIRSTHDR(&msg);
455 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
456 cmptr->cmsg_level = SOL_SOCKET;
457 cmptr->cmsg_type = SCM_RIGHTS;
458 *((int *)CMSG_DATA(cmptr)) = 1;
459
460 vec[0].iov_base = (void*)&sv;
461 vec[0].iov_len = sizeof(sv);
462 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
463
464 if(got < 0) {
bf357333 465 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
466 abort();
467 }
bf357333
NC
468 if(got < sizeof(sv)) {
469 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 /* Return protocol is
474 int: errno value
475 unsigned char: length of location string (0 for empty)
476 unsigned char*: string (not terminated)
477 */
478 vec[0].iov_base = (void*)&returned_errno;
479 vec[0].iov_len = sizeof(returned_errno);
480 vec[1].iov_base = buffer;
481 vec[1].iov_len = 1;
482
483 got = readv(sock, vec, 2);
41e4abd8
NC
484
485 if(got < 0) {
486 perror("Debug leaking scalars parent read failed");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
808ad2d0 490 if(got < sizeof(returned_errno) + 1) {
41e4abd8 491 perror("Debug leaking scalars parent short read");
808ad2d0 492 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
493 abort();
494 }
495
808ad2d0
NC
496 if (*buffer) {
497 got = read(sock, buffer + 1, *buffer);
498 if(got < 0) {
499 perror("Debug leaking scalars parent read 2 failed");
500 PerlIO_flush(PerlIO_stderr());
501 abort();
502 }
503
504 if(got < *buffer) {
505 perror("Debug leaking scalars parent short read 2");
506 PerlIO_flush(PerlIO_stderr());
507 abort();
508 }
509 }
510
511 if (returned_errno || *buffer) {
512 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
513 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
514 returned_errno, strerror(returned_errno));
41e4abd8
NC
515 }
516}
517#endif
518
62375a60 519/*
954c1994
GS
520=for apidoc perl_destruct
521
522Shuts down a Perl interpreter. See L<perlembed>.
523
524=cut
525*/
526
31d77e54 527int
0cb96387 528perl_destruct(pTHXx)
79072805 529{
27da23d5 530 dVAR;
be2ea8ed 531 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 532 HV *hv;
2aa47728 533#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
534 pid_t child;
535#endif
8990e307 536
7918f24d
NC
537 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538#ifndef MULTIPLICITY
ed6c66dd 539 PERL_UNUSED_ARG(my_perl);
7918f24d 540#endif
9d4ba2ae 541
7766f137
GS
542 /* wait for all pseudo-forked children to finish */
543 PERL_WAIT_FOR_CHILDREN;
544
3280af22 545 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
546#ifdef DEBUGGING
547 {
9d4ba2ae
AL
548 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
549 if (s) {
e1ec3a88 550 const int i = atoi(s);
5f05dabc
PP
551 if (destruct_level < i)
552 destruct_level = i;
553 }
4633a7c4
LW
554 }
555#endif
556
27da23d5 557 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
558 dJMPENV;
559 int x = 0;
560
561 JMPENV_PUSH(x);
1b6737cc 562 PERL_UNUSED_VAR(x);
f3faeb53
AB
563 if (PL_endav && !PL_minus_c)
564 call_list(PL_scopestack_ix, PL_endav);
565 JMPENV_POP;
26f423df 566 }
f3faeb53 567 LEAVE;
a0d0e21e
LW
568 FREETMPS;
569
e00b64d4 570 /* Need to flush since END blocks can produce output */
f13a2bc0 571 my_fflush_all();
e00b64d4 572
62375a60
NIS
573 if (CALL_FPTR(PL_threadhook)(aTHX)) {
574 /* Threads hook has vetoed further cleanup */
c301d606 575 PL_veto_cleanup = TRUE;
37038d91 576 return STATUS_EXIT;
62375a60
NIS
577 }
578
2aa47728
NC
579#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
580 if (destruct_level != 0) {
581 /* Fork here to create a child. Our child's job is to preserve the
582 state of scalars prior to destruction, so that we can instruct it
583 to dump any scalars that we later find have leaked.
584 There's no subtlety in this code - it assumes POSIX, and it doesn't
585 fail gracefully */
586 int fd[2];
587
588 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
589 perror("Debug leaking scalars socketpair failed");
590 abort();
591 }
592
593 child = fork();
594 if(child == -1) {
595 perror("Debug leaking scalars fork failed");
596 abort();
597 }
598 if (!child) {
599 /* We are the child */
3125a5a4
NC
600 const int sock = fd[1];
601 const int debug_fd = PerlIO_fileno(Perl_debug_log);
602 int f;
808ad2d0
NC
603 const char *where;
604 /* Our success message is an integer 0, and a char 0 */
b61433a9 605 static const char success[sizeof(int) + 1] = {0};
3125a5a4 606
2aa47728 607 close(fd[0]);
2aa47728 608
3125a5a4
NC
609 /* We need to close all other file descriptors otherwise we end up
610 with interesting hangs, where the parent closes its end of a
611 pipe, and sits waiting for (another) child to terminate. Only
612 that child never terminates, because it never gets EOF, because
bf357333
NC
613 we also have the far end of the pipe open. We even need to
614 close the debugging fd, because sometimes it happens to be one
615 end of a pipe, and a process is waiting on the other end for
616 EOF. Normally it would be closed at some point earlier in
617 destruction, but if we happen to cause the pipe to remain open,
618 EOF never occurs, and we get an infinite hang. Hence all the
619 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
620
621 f = sysconf(_SC_OPEN_MAX);
622 if(f < 0) {
808ad2d0
NC
623 where = "sysconf failed";
624 goto abort;
3125a5a4
NC
625 }
626 while (f--) {
627 if (f == sock)
628 continue;
3125a5a4
NC
629 close(f);
630 }
631
2aa47728
NC
632 while (1) {
633 SV *target;
bf357333
NC
634 union control_un control;
635 struct msghdr msg;
636 struct iovec vec[1];
637 struct cmsghdr *cmptr;
638 ssize_t got;
639 int got_fd;
640
641 msg.msg_control = control.control;
642 msg.msg_controllen = sizeof(control.control);
643 /* We're a connected socket so we don't need a source */
644 msg.msg_name = NULL;
645 msg.msg_namelen = 0;
646 msg.msg_iov = vec;
647 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
648
649 vec[0].iov_base = (void*)&target;
650 vec[0].iov_len = sizeof(target);
651
652 got = recvmsg(sock, &msg, 0);
2aa47728
NC
653
654 if(got == 0)
655 break;
656 if(got < 0) {
808ad2d0
NC
657 where = "recv failed";
658 goto abort;
2aa47728
NC
659 }
660 if(got < sizeof(target)) {
808ad2d0
NC
661 where = "short recv";
662 goto abort;
2aa47728 663 }
bf357333 664
808ad2d0
NC
665 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
666 where = "no cmsg";
667 goto abort;
668 }
669 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
670 where = "wrong cmsg_len";
671 goto abort;
672 }
673 if(cmptr->cmsg_level != SOL_SOCKET) {
674 where = "wrong cmsg_level";
675 goto abort;
676 }
677 if(cmptr->cmsg_type != SCM_RIGHTS) {
678 where = "wrong cmsg_type";
679 goto abort;
680 }
bf357333
NC
681
682 got_fd = *(int*)CMSG_DATA(cmptr);
683 /* For our last little bit of trickery, put the file descriptor
684 back into Perl_debug_log, as if we never actually closed it
685 */
808ad2d0
NC
686 if(got_fd != debug_fd) {
687 if (dup2(got_fd, debug_fd) == -1) {
688 where = "dup2";
689 goto abort;
690 }
691 }
2aa47728 692 sv_dump(target);
bf357333 693
2aa47728
NC
694 PerlIO_flush(Perl_debug_log);
695
808ad2d0 696 got = write(sock, &success, sizeof(success));
2aa47728
NC
697
698 if(got < 0) {
808ad2d0
NC
699 where = "write failed";
700 goto abort;
2aa47728 701 }
808ad2d0
NC
702 if(got < sizeof(success)) {
703 where = "short write";
704 goto abort;
2aa47728
NC
705 }
706 }
707 _exit(0);
808ad2d0
NC
708 abort:
709 {
710 int send_errno = errno;
711 unsigned char length = (unsigned char) strlen(where);
712 struct iovec failure[3] = {
713 {(void*)&send_errno, sizeof(send_errno)},
714 {&length, 1},
715 {(void*)where, length}
716 };
717 int got = writev(sock, failure, 3);
718 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
719 in the parent if we try to read from the socketpair after the
720 child has exited, even if there was data to read.
721 So sleep a bit to give the parent a fighting chance of
722 reading the data. */
723 sleep(2);
724 _exit((got == -1) ? errno : 0);
725 }
bf357333 726 /* End of child. */
2aa47728 727 }
41e4abd8 728 PL_dumper_fd = fd[0];
2aa47728
NC
729 close(fd[1]);
730 }
731#endif
732
ff0cee69
PP
733 /* We must account for everything. */
734
735 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
736 /* Do this now, because destroying ops can cause new SVs to be generated
737 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
738 PL_curcop to point to a valid op from which the filename structure
739 member is copied. */
740 PL_curcop = &PL_compiling;
3280af22 741 if (PL_main_root) {
4e380990
DM
742 /* ensure comppad/curpad to refer to main's pad */
743 if (CvPADLIST(PL_main_cv)) {
744 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
745 }
3280af22 746 op_free(PL_main_root);
5f66b61c 747 PL_main_root = NULL;
a0d0e21e 748 }
5f66b61c 749 PL_main_start = NULL;
3280af22 750 SvREFCNT_dec(PL_main_cv);
601f1833 751 PL_main_cv = NULL;
24d3c518 752 PL_dirty = TRUE;
ff0cee69 753
13621cfb
NIS
754 /* Tell PerlIO we are about to tear things apart in case
755 we have layers which are using resources that should
756 be cleaned up now.
757 */
758
759 PerlIO_destruct(aTHX);
760
3280af22 761 if (PL_sv_objcount) {
a0d0e21e
LW
762 /*
763 * Try to destruct global references. We do this first so that the
764 * destructors and destructees still exist. Some sv's might remain.
765 * Non-referenced objects are on their own.
766 */
a0d0e21e 767 sv_clean_objs();
bf9cdc68 768 PL_sv_objcount = 0;
a0de6cf5 769 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 770 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
771 }
772
5cd24f17 773 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 774 SvREFCNT_dec(PL_warnhook);
a0714e2c 775 PL_warnhook = NULL;
3280af22 776 SvREFCNT_dec(PL_diehook);
a0714e2c 777 PL_diehook = NULL;
5cd24f17 778
4b556e6c 779 /* call exit list functions */
3280af22 780 while (PL_exitlistlen-- > 0)
acfe0abc 781 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 782
3280af22 783 Safefree(PL_exitlist);
4b556e6c 784
1c4916e5
CB
785 PL_exitlist = NULL;
786 PL_exitlistlen = 0;
787
a3e6e81e
NC
788 SvREFCNT_dec(PL_registered_mros);
789
551a8b83 790 /* jettison our possibly duplicated environment */
4b647fb0
DM
791 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
792 * so we certainly shouldn't free it here
793 */
2f42fcb0 794#ifndef PERL_MICRO
4b647fb0 795#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 796 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
797#ifdef USE_ITHREADS
798 /* only main thread can free environ[0] contents */
799 && PL_curinterp == aTHX
800#endif
801 )
802 {
551a8b83
JH
803 I32 i;
804
805 for (i = 0; environ[i]; i++)
4b420006 806 safesysfree(environ[i]);
0631ea03 807
4b420006
JH
808 /* Must use safesysfree() when working with environ. */
809 safesysfree(environ);
551a8b83
JH
810
811 environ = PL_origenviron;
812 }
813#endif
2f42fcb0 814#endif /* !PERL_MICRO */
551a8b83 815
30985c42
JH
816 if (destruct_level == 0) {
817
818 DEBUG_P(debprofdump());
819
820#if defined(PERLIO_LAYERS)
821 /* No more IO - including error messages ! */
822 PerlIO_cleanup(aTHX);
823#endif
824
825 CopFILE_free(&PL_compiling);
826 CopSTASH_free(&PL_compiling);
827
828 /* The exit() function will do everything that needs doing. */
829 return STATUS_EXIT;
830 }
831
804ffa60 832 /* reset so print() ends up where we expect */
a0714e2c 833 setdefout(NULL);
804ffa60 834
5f8cb046
DM
835#ifdef USE_ITHREADS
836 /* the syntax tree is shared between clones
837 * so op_free(PL_main_root) only ReREFCNT_dec's
838 * REGEXPs in the parent interpreter
839 * we need to manually ReREFCNT_dec for the clones
840 */
5f8cb046 841 SvREFCNT_dec(PL_regex_padav);
7d49f689 842 PL_regex_padav = NULL;
5f8cb046
DM
843 PL_regex_pad = NULL;
844#endif
845
ad64d0ec 846 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
847 PL_stashcache = NULL;
848
5f05dabc
PP
849 /* loosen bonds of global variables */
850
2f9285f8
DM
851 /* XXX can PL_parser still be non-null here? */
852 if(PL_parser && PL_parser->rsfp) {
853 (void)PerlIO_close(PL_parser->rsfp);
854 PL_parser->rsfp = NULL;
8ebc5c01
PP
855 }
856
84386e14
RGS
857 if (PL_minus_F) {
858 Safefree(PL_splitstr);
859 PL_splitstr = NULL;
860 }
861
8ebc5c01 862 /* switches */
3280af22
NIS
863 PL_minus_n = FALSE;
864 PL_minus_p = FALSE;
865 PL_minus_l = FALSE;
866 PL_minus_a = FALSE;
867 PL_minus_F = FALSE;
868 PL_doswitches = FALSE;
599cee73 869 PL_dowarn = G_WARN_OFF;
3280af22
NIS
870 PL_doextract = FALSE;
871 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
872 PL_unsafe = FALSE;
873
874 Safefree(PL_inplace);
bd61b366 875 PL_inplace = NULL;
a7cb1f99 876 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
877
878 if (PL_e_script) {
879 SvREFCNT_dec(PL_e_script);
a0714e2c 880 PL_e_script = NULL;
8ebc5c01
PP
881 }
882
bf9cdc68
RG
883 PL_perldb = 0;
884
8ebc5c01
PP
885 /* magical thingies */
886
e23d9e2f
CS
887 SvREFCNT_dec(PL_ofsgv); /* *, */
888 PL_ofsgv = NULL;
5f05dabc 889
7889fe52 890 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 891 PL_ors_sv = NULL;
8ebc5c01 892
3280af22 893 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 894 PL_rs = NULL;
dc92893f 895
d33b2eba 896 Safefree(PL_osname); /* $^O */
bd61b366 897 PL_osname = NULL;
5f05dabc 898
3280af22 899 SvREFCNT_dec(PL_statname);
a0714e2c
SS
900 PL_statname = NULL;
901 PL_statgv = NULL;
5f05dabc 902
8ebc5c01
PP
903 /* defgv, aka *_ should be taken care of elsewhere */
904
8ebc5c01 905 /* clean up after study() */
3280af22 906 SvREFCNT_dec(PL_lastscream);
a0714e2c 907 PL_lastscream = NULL;
3280af22
NIS
908 Safefree(PL_screamfirst);
909 PL_screamfirst = 0;
910 Safefree(PL_screamnext);
911 PL_screamnext = 0;
8ebc5c01 912
7d5ea4e7
GS
913 /* float buffer */
914 Safefree(PL_efloatbuf);
bd61b366 915 PL_efloatbuf = NULL;
7d5ea4e7
GS
916 PL_efloatsize = 0;
917
8ebc5c01 918 /* startup and shutdown function lists */
3280af22 919 SvREFCNT_dec(PL_beginav);
5a837c8f 920 SvREFCNT_dec(PL_beginav_save);
3280af22 921 SvREFCNT_dec(PL_endav);
7d30b5c4 922 SvREFCNT_dec(PL_checkav);
ece599bd 923 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
924 SvREFCNT_dec(PL_unitcheckav);
925 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 926 SvREFCNT_dec(PL_initav);
7d49f689
NC
927 PL_beginav = NULL;
928 PL_beginav_save = NULL;
929 PL_endav = NULL;
930 PL_checkav = NULL;
931 PL_checkav_save = NULL;
3c10abe3
AG
932 PL_unitcheckav = NULL;
933 PL_unitcheckav_save = NULL;
7d49f689 934 PL_initav = NULL;
5618dfe8 935
8ebc5c01 936 /* shortcuts just get cleared */
a0714e2c
SS
937 PL_envgv = NULL;
938 PL_incgv = NULL;
939 PL_hintgv = NULL;
940 PL_errgv = NULL;
941 PL_argvgv = NULL;
942 PL_argvoutgv = NULL;
943 PL_stdingv = NULL;
944 PL_stderrgv = NULL;
945 PL_last_in_gv = NULL;
946 PL_replgv = NULL;
947 PL_DBgv = NULL;
948 PL_DBline = NULL;
949 PL_DBsub = NULL;
950 PL_DBsingle = NULL;
951 PL_DBtrace = NULL;
952 PL_DBsignal = NULL;
601f1833 953 PL_DBcv = NULL;
7d49f689 954 PL_dbargs = NULL;
5c284bb0 955 PL_debstash = NULL;
8ebc5c01 956
7a1c5554 957 SvREFCNT_dec(PL_argvout_stack);
7d49f689 958 PL_argvout_stack = NULL;
8ebc5c01 959
5c831c24 960 SvREFCNT_dec(PL_modglobal);
5c284bb0 961 PL_modglobal = NULL;
5c831c24 962 SvREFCNT_dec(PL_preambleav);
7d49f689 963 PL_preambleav = NULL;
5c831c24 964 SvREFCNT_dec(PL_subname);
a0714e2c 965 PL_subname = NULL;
ca0c25f6 966#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 967 SvREFCNT_dec(PL_pidstatus);
5c284bb0 968 PL_pidstatus = NULL;
ca0c25f6 969#endif
5c831c24 970 SvREFCNT_dec(PL_toptarget);
a0714e2c 971 PL_toptarget = NULL;
5c831c24 972 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
973 PL_bodytarget = NULL;
974 PL_formtarget = NULL;
5c831c24 975
d33b2eba 976 /* free locale stuff */
b9582b6a 977#ifdef USE_LOCALE_COLLATE
d33b2eba 978 Safefree(PL_collation_name);
bd61b366 979 PL_collation_name = NULL;
b9582b6a 980#endif
d33b2eba 981
b9582b6a 982#ifdef USE_LOCALE_NUMERIC
d33b2eba 983 Safefree(PL_numeric_name);
bd61b366 984 PL_numeric_name = NULL;
a453c169 985 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 986 PL_numeric_radix_sv = NULL;
b9582b6a 987#endif
d33b2eba 988
5c831c24
GS
989 /* clear utf8 character classes */
990 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
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 1009 PL_utf8_alnum = NULL;
a0714e2c
SS
1010 PL_utf8_ascii = NULL;
1011 PL_utf8_alpha = NULL;
1012 PL_utf8_space = NULL;
1013 PL_utf8_cntrl = NULL;
1014 PL_utf8_graph = NULL;
1015 PL_utf8_digit = NULL;
1016 PL_utf8_upper = NULL;
1017 PL_utf8_lower = NULL;
1018 PL_utf8_print = NULL;
1019 PL_utf8_punct = NULL;
1020 PL_utf8_xdigit = NULL;
1021 PL_utf8_mark = NULL;
1022 PL_utf8_toupper = NULL;
1023 PL_utf8_totitle = NULL;
1024 PL_utf8_tolower = NULL;
1025 PL_utf8_tofold = NULL;
1026 PL_utf8_idstart = NULL;
1027 PL_utf8_idcont = NULL;
5c831c24 1028
971a9dd3 1029 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1030 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1031 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1032 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1033 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1034 CopFILE_free(&PL_compiling);
1035 CopSTASH_free(&PL_compiling);
5c831c24 1036
a0d0e21e 1037 /* Prepare to destruct main symbol table. */
5f05dabc 1038
3280af22
NIS
1039 hv = PL_defstash;
1040 PL_defstash = 0;
a0d0e21e 1041 SvREFCNT_dec(hv);
5c831c24 1042 SvREFCNT_dec(PL_curstname);
a0714e2c 1043 PL_curstname = NULL;
a0d0e21e 1044
5a844595
GS
1045 /* clear queued errors */
1046 SvREFCNT_dec(PL_errors);
a0714e2c 1047 PL_errors = NULL;
5a844595 1048
dd69841b
BB
1049 SvREFCNT_dec(PL_isarev);
1050
a0d0e21e 1051 FREETMPS;
0453d815 1052 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1053 if (PL_scopestack_ix != 0)
9014280d 1054 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1055 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1056 (long)PL_scopestack_ix);
1057 if (PL_savestack_ix != 0)
9014280d 1058 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1059 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1060 (long)PL_savestack_ix);
1061 if (PL_tmps_floor != -1)
9014280d 1062 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1063 (long)PL_tmps_floor + 1);
a0d0e21e 1064 if (cxstack_ix != -1)
9014280d 1065 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1066 (long)cxstack_ix + 1);
a0d0e21e 1067 }
8990e307
LW
1068
1069 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1070
1071 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1072 while (sv_clean_all() > 2)
5226ed68
JH
1073 ;
1074
d4777f27
GS
1075 AvREAL_off(PL_fdpid); /* no surviving entries */
1076 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1077 PL_fdpid = NULL;
d33b2eba 1078
6c644e78
GS
1079#ifdef HAVE_INTERP_INTERN
1080 sys_intern_clear();
1081#endif
1082
6e72f9df
PP
1083 /* Destruct the global string table. */
1084 {
1085 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1086 * so that sv_free() won't fail on them.
80459961
NC
1087 * Now that the global string table is using a single hunk of memory
1088 * for both HE and HEK, we either need to explicitly unshare it the
1089 * correct way, or actually free things here.
6e72f9df 1090 */
80459961
NC
1091 I32 riter = 0;
1092 const I32 max = HvMAX(PL_strtab);
c4420975 1093 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1094 HE *hent = array[0];
1095
6e72f9df 1096 for (;;) {
0453d815 1097 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1098 HE * const next = HeNEXT(hent);
9014280d 1099 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1100 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1101 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1102 Safefree(hent);
1103 hent = next;
6e72f9df
PP
1104 }
1105 if (!hent) {
1106 if (++riter > max)
1107 break;
1108 hent = array[riter];
1109 }
1110 }
80459961
NC
1111
1112 Safefree(array);
1113 HvARRAY(PL_strtab) = 0;
1114 HvTOTALKEYS(PL_strtab) = 0;
1115 HvFILL(PL_strtab) = 0;
6e72f9df 1116 }
3280af22 1117 SvREFCNT_dec(PL_strtab);
6e72f9df 1118
e652bb2f 1119#ifdef USE_ITHREADS
c21d1a0f 1120 /* free the pointer tables used for cloning */
a0739874 1121 ptr_table_free(PL_ptr_table);
bf9cdc68 1122 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1123#endif
a0739874 1124
d33b2eba
GS
1125 /* free special SVs */
1126
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1130 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1131
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1135 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1136
9f375a43
DM
1137 {
1138 int i;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1144 }
1145 }
1146
0453d815 1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1149
eba0f806
DM
1150#ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1152 SV* sva;
1153 SV* sv;
1154 register SV* svend;
1155
ad64d0ec 1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
1159 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1161 " flags=0x%"UVxf
fd0854ff
DM
1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
1163 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1164 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1165 pTHX__VALUE,
fd0854ff
DM
1166 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1167 sv->sv_debug_line,
1168 sv->sv_debug_inpad ? "for" : "by",
1169 sv->sv_debug_optype ?
1170 PL_op_name[sv->sv_debug_optype]: "(none)",
1171 sv->sv_debug_cloned ? " (cloned)" : ""
1172 );
2aa47728 1173#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1174 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1175#endif
eba0f806
DM
1176 }
1177 }
1178 }
1179 }
2aa47728
NC
1180#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1181 {
1182 int status;
1183 fd_set rset;
1184 /* Wait for up to 4 seconds for child to terminate.
1185 This seems to be the least effort way of timing out on reaping
1186 its exit status. */
1187 struct timeval waitfor = {4, 0};
41e4abd8 1188 int sock = PL_dumper_fd;
2aa47728
NC
1189
1190 shutdown(sock, 1);
1191 FD_ZERO(&rset);
1192 FD_SET(sock, &rset);
1193 select(sock + 1, &rset, NULL, NULL, &waitfor);
1194 waitpid(child, &status, WNOHANG);
1195 close(sock);
1196 }
1197#endif
eba0f806 1198#endif
77abb4c6
NC
1199#ifdef DEBUG_LEAKING_SCALARS_ABORT
1200 if (PL_sv_count)
1201 abort();
1202#endif
bf9cdc68 1203 PL_sv_count = 0;
eba0f806 1204
f1fac472
NC
1205#ifdef PERL_DEBUG_READONLY_OPS
1206 free(PL_slabs);
1207 PL_slabs = NULL;
1208 PL_slab_count = 0;
1209#endif
eba0f806 1210
56a2bab7 1211#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1212 /* No more IO - including error messages ! */
1213 PerlIO_cleanup(aTHX);
1214#endif
1215
9f4bd222 1216 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1217 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1218 for no arg - and will try and SvREFCNT_dec it.
1219 */
1220 SvREFCNT(&PL_sv_undef) = 0;
1221 SvREADONLY_off(&PL_sv_undef);
1222
3280af22 1223 Safefree(PL_origfilename);
bd61b366 1224 PL_origfilename = NULL;
3280af22 1225 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1226 PL_reg_start_tmp = (char**)NULL;
1227 PL_reg_start_tmpl = 0;
43c5f42d 1228 Safefree(PL_reg_curpm);
82ba1be6 1229 Safefree(PL_reg_poscache);
dd28f7bb 1230 free_tied_hv_pool();
3280af22 1231 Safefree(PL_op_mask);
cf36064f 1232 Safefree(PL_psig_name);
bf9cdc68 1233 PL_psig_name = (SV**)NULL;
d525a7b2 1234 PL_psig_ptr = (SV**)NULL;
ce08f86c 1235 Safefree(PL_psig_pend);
bf9cdc68 1236 PL_psig_pend = (int*)NULL;
31c91b43
LR
1237 {
1238 /* We need to NULL PL_psig_pend first, so that
1239 signal handlers know not to use it */
1240 int *psig_save = PL_psig_pend;
1241 PL_psig_pend = (int*)NULL;
1242 Safefree(psig_save);
1243 }
a0714e2c 1244 PL_formfeed = NULL;
6e72f9df 1245 nuke_stacks();
bf9cdc68
RG
1246 PL_tainting = FALSE;
1247 PL_taint_warn = FALSE;
3280af22 1248 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1249 PL_debug = 0;
ac27b0f5 1250
a0d0e21e 1251 DEBUG_P(debprofdump());
d33b2eba 1252
e5dd39fc 1253#ifdef USE_REENTRANT_API
10bc17b6 1254 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1255#endif
1256
612f20c3
GS
1257 sv_free_arenas();
1258
5d9a96ca
DM
1259 while (PL_regmatch_slab) {
1260 regmatch_slab *s = PL_regmatch_slab;
1261 PL_regmatch_slab = PL_regmatch_slab->next;
1262 Safefree(s);
1263 }
1264
fc36a67e
PP
1265 /* As the absolutely last thing, free the non-arena SV for mess() */
1266
3280af22 1267 if (PL_mess_sv) {
f350b448
NC
1268 /* we know that type == SVt_PVMG */
1269
9c63abab 1270 /* it could have accumulated taint magic */
f350b448
NC
1271 MAGIC* mg;
1272 MAGIC* moremagic;
1273 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1274 moremagic = mg->mg_moremagic;
1275 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1276 && mg->mg_len >= 0)
1277 Safefree(mg->mg_ptr);
1278 Safefree(mg);
9c63abab 1279 }
f350b448 1280
fc36a67e 1281 /* we know that type >= SVt_PV */
8bd4d4c5 1282 SvPV_free(PL_mess_sv);
3280af22
NIS
1283 Safefree(SvANY(PL_mess_sv));
1284 Safefree(PL_mess_sv);
a0714e2c 1285 PL_mess_sv = NULL;
fc36a67e 1286 }
37038d91 1287 return STATUS_EXIT;
79072805
LW
1288}
1289
954c1994
GS
1290/*
1291=for apidoc perl_free
1292
1293Releases a Perl interpreter. See L<perlembed>.
1294
1295=cut
1296*/
1297
79072805 1298void
0cb96387 1299perl_free(pTHXx)
79072805 1300{
5174512c
NC
1301 dVAR;
1302
7918f24d
NC
1303 PERL_ARGS_ASSERT_PERL_FREE;
1304
c301d606
DM
1305 if (PL_veto_cleanup)
1306 return;
1307
7cb608b5 1308#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1309 {
1310 /*
1311 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1312 * value as we're probably hunting memory leaks then
1313 */
1314 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1315 if (!s || atoi(s) == 0) {
4fd0a9b8 1316 const U32 old_debug = PL_debug;
55ef9aae
MHM
1317 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1318 thread at thread exit. */
4fd0a9b8
NC
1319 if (DEBUG_m_TEST) {
1320 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1321 "free this thread's memory\n");
1322 PL_debug &= ~ DEBUG_m_FLAG;
1323 }
55ef9aae
MHM
1324 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1325 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1326 PL_debug = old_debug;
55ef9aae
MHM
1327 }
1328 }
7cb608b5
NC
1329#endif
1330
acfe0abc 1331#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1332# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1333 {
acfe0abc 1334# ifdef NETWARE
7af12a34 1335 void *host = nw_internal_host;
acfe0abc 1336# else
7af12a34 1337 void *host = w32_internal_host;
acfe0abc 1338# endif
7af12a34 1339 PerlMem_free(aTHXx);
acfe0abc 1340# ifdef NETWARE
7af12a34 1341 nw_delete_internal_host(host);
acfe0abc 1342# else
7af12a34 1343 win32_delete_internal_host(host);
acfe0abc 1344# endif
7af12a34 1345 }
1c0ca838
GS
1346# else
1347 PerlMem_free(aTHXx);
1348# endif
acfe0abc
GS
1349#else
1350 PerlMem_free(aTHXx);
76e3520e 1351#endif
79072805
LW
1352}
1353
b7f7fff6 1354#if defined(USE_ITHREADS)
aebd1ac7
GA
1355/* provide destructors to clean up the thread key when libperl is unloaded */
1356#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1357
826955bd 1358#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1359#pragma fini "perl_fini"
666ad1ec
GA
1360#elif defined(__sun) && !defined(__GNUC__)
1361#pragma fini (perl_fini)
aebd1ac7
GA
1362#endif
1363
0dbb1585
AL
1364static void
1365#if defined(__GNUC__)
1366__attribute__((destructor))
aebd1ac7 1367#endif
de009b76 1368perl_fini(void)
aebd1ac7 1369{
27da23d5 1370 dVAR;
c301d606 1371 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1372 FREE_THREAD_KEY;
1373}
1374
1375#endif /* WIN32 */
1376#endif /* THREADS */
1377
4b556e6c 1378void
864dbfa3 1379Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1380{
97aff369 1381 dVAR;
3280af22
NIS
1382 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1383 PL_exitlist[PL_exitlistlen].fn = fn;
1384 PL_exitlist[PL_exitlistlen].ptr = ptr;
1385 ++PL_exitlistlen;
4b556e6c
JD
1386}
1387
56cf6df8
RGS
1388#ifdef HAS_PROCSELFEXE
1389/* This is a function so that we don't hold on to MAXPATHLEN
1390 bytes of stack longer than necessary
1391 */
1392STATIC void
e1ec3a88 1393S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1394{
1395 char buf[MAXPATHLEN];
1396 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1397
1398 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1399 includes a spurious NUL which will cause $^X to fail in system
1400 or backticks (this will prevent extensions from being built and
1401 many tests from working). readlink is not meant to add a NUL.
1402 Normal readlink works fine.
1403 */
1404 if (len > 0 && buf[len-1] == '\0') {
1405 len--;
1406 }
1407
1408 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1409 returning the text "unknown" from the readlink rather than the path
1410 to the executable (or returning an error from the readlink). Any valid
1411 path has a '/' in it somewhere, so use that to validate the result.
1412 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1413 */
1414 if (len > 0 && memchr(buf, '/', len)) {
1415 sv_setpvn(sv,buf,len);
1416 }
1417 else {
1418 sv_setpv(sv,arg0);
1419 }
1420}
1421#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1422
1423STATIC void
1424S_set_caret_X(pTHX) {
97aff369 1425 dVAR;
fafc274c 1426 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1427 if (tmpgv) {
1428#ifdef HAS_PROCSELFEXE
1429 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1430#else
1431#ifdef OS2
c69033f2 1432 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1433#else
c69033f2 1434 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1435#endif
1436#endif
1437 }
1438}
1439
954c1994
GS
1440/*
1441=for apidoc perl_parse
1442
1443Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1444
1445=cut
1446*/
1447
79072805 1448int
0cb96387 1449perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1450{
27da23d5 1451 dVAR;
6224f72b 1452 I32 oldscope;
6224f72b 1453 int ret;
db36c5a1 1454 dJMPENV;
8d063cd8 1455
7918f24d
NC
1456 PERL_ARGS_ASSERT_PERL_PARSE;
1457#ifndef MULTIPLICITY
ed6c66dd 1458 PERL_UNUSED_ARG(my_perl);
7918f24d 1459#endif
9d4ba2ae 1460
b0891165
JH
1461#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1462 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1463 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1464 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1465 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1466 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1467 if (!PL_rehash_seed_set)
1468 PL_rehash_seed = get_hash_seed();
b0891165 1469 {
9d4ba2ae 1470 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1471
1b6737cc
AL
1472 if (s && (atoi(s) == 1))
1473 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1474 }
1475#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1476
3280af22 1477 PL_origargc = argc;
e2975953 1478 PL_origargv = argv;
a0d0e21e 1479
a2722ac9
GA
1480 if (PL_origalen != 0) {
1481 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1482 }
1483 else {
3cb9023d
JH
1484 /* Set PL_origalen be the sum of the contiguous argv[]
1485 * elements plus the size of the env in case that it is
e9137a8e 1486 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1487 * as the maximum modifiable length of $0. In the worst case
1488 * the area we are able to modify is limited to the size of
43c32782 1489 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1490 * --jhi */
e1ec3a88 1491 const char *s = NULL;
54bfe034 1492 int i;
1b6737cc 1493 const UV mask =
7d8e7db3 1494 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1495 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1496 const UV aligned =
43c32782
JH
1497 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1498
1499 /* See if all the arguments are contiguous in memory. Note
1500 * that 'contiguous' is a loose term because some platforms
1501 * align the argv[] and the envp[]. If the arguments look
1502 * like non-aligned, assume that they are 'strictly' or
1503 * 'traditionally' contiguous. If the arguments look like
1504 * aligned, we just check that they are within aligned
1505 * PTRSIZE bytes. As long as no system has something bizarre
1506 * like the argv[] interleaved with some other data, we are
1507 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1508 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1509 while (*s) s++;
1510 for (i = 1; i < PL_origargc; i++) {
1511 if ((PL_origargv[i] == s + 1
43c32782 1512#ifdef OS2
c8941eeb 1513 || PL_origargv[i] == s + 2
43c32782 1514#endif
c8941eeb
JH
1515 )
1516 ||
1517 (aligned &&
1518 (PL_origargv[i] > s &&
1519 PL_origargv[i] <=
1520 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1521 )
1522 {
1523 s = PL_origargv[i];
1524 while (*s) s++;
1525 }
1526 else
1527 break;
54bfe034 1528 }
54bfe034 1529 }
a4a109c2
JD
1530
1531#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1532 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1533 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1534 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1535 ||
1536 (aligned &&
1537 (PL_origenviron[0] > s &&
1538 PL_origenviron[0] <=
1539 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1540 )
1541 {
9d419b5f 1542#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1543 s = PL_origenviron[0];
1544 while (*s) s++;
1545#endif
bd61b366 1546 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1547 /* Force copy of environment. */
1548 for (i = 1; PL_origenviron[i]; i++) {
1549 if (PL_origenviron[i] == s + 1
1550 ||
1551 (aligned &&
1552 (PL_origenviron[i] > s &&
1553 PL_origenviron[i] <=
1554 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1555 )
1556 {
1557 s = PL_origenviron[i];
1558 while (*s) s++;
1559 }
1560 else
1561 break;
54bfe034 1562 }
43c32782 1563 }
54bfe034 1564 }
a4a109c2
JD
1565#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1566
2d2af554 1567 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1568 }
1569
3280af22 1570 if (PL_do_undump) {
a0d0e21e
LW
1571
1572 /* Come here if running an undumped a.out. */
1573
3280af22
NIS
1574 PL_origfilename = savepv(argv[0]);
1575 PL_do_undump = FALSE;
a0d0e21e 1576 cxstack_ix = -1; /* start label stack again */
748a9306 1577 init_ids();
b7975bdd
NC
1578 assert (!PL_tainted);
1579 TAINT;
1580 S_set_caret_X(aTHX);
1581 TAINT_NOT;
a0d0e21e
LW
1582 init_postdump_symbols(argc,argv,env);
1583 return 0;
1584 }
1585
3280af22 1586 if (PL_main_root) {
3280af22 1587 op_free(PL_main_root);
5f66b61c 1588 PL_main_root = NULL;
ff0cee69 1589 }
5f66b61c 1590 PL_main_start = NULL;
3280af22 1591 SvREFCNT_dec(PL_main_cv);
601f1833 1592 PL_main_cv = NULL;
79072805 1593
3280af22
NIS
1594 time(&PL_basetime);
1595 oldscope = PL_scopestack_ix;
599cee73 1596 PL_dowarn = G_WARN_OFF;
f86702cc 1597
14dd3ad8 1598 JMPENV_PUSH(ret);
6224f72b 1599 switch (ret) {
312caa8e 1600 case 0:
14dd3ad8 1601 parse_body(env,xsinit);
3c10abe3
AG
1602 if (PL_unitcheckav)
1603 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1604 if (PL_checkav)
1605 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1606 ret = 0;
1607 break;
6224f72b
GS
1608 case 1:
1609 STATUS_ALL_FAILURE;
1610 /* FALL THROUGH */
1611 case 2:
1612 /* my_exit() was called */
3280af22 1613 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1614 LEAVE;
1615 FREETMPS;
3280af22 1616 PL_curstash = PL_defstash;
3c10abe3
AG
1617 if (PL_unitcheckav)
1618 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1619 if (PL_checkav)
1620 call_list(oldscope, PL_checkav);
37038d91 1621 ret = STATUS_EXIT;
14dd3ad8 1622 break;
6224f72b 1623 case 3:
bf49b057 1624 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1625 ret = 1;
1626 break;
6224f72b 1627 }
14dd3ad8
GS
1628 JMPENV_POP;
1629 return ret;
1630}
1631
4a5df386
NC
1632/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1633 miniperl, and we need to see those flags reflected in the values here. */
1634
1635/* What this returns is subject to change. Use the public interface in Config.
1636 */
1637static void
1638S_Internals_V(pTHX_ CV *cv)
1639{
1640 dXSARGS;
1641#ifdef LOCAL_PATCH_COUNT
1642 const int local_patch_count = LOCAL_PATCH_COUNT;
1643#else
1644 const int local_patch_count = 0;
1645#endif
2dc296d2 1646 const int entries = 3 + local_patch_count;
4a5df386
NC
1647 int i;
1648 static char non_bincompat_options[] =
1649# ifdef DEBUGGING
1650 " DEBUGGING"
1651# endif
1652# ifdef NO_MATHOMS
1653 " NO_MATHOMS"
1654# endif
1655# ifdef PERL_DISABLE_PMC
1656 " PERL_DISABLE_PMC"
1657# endif
1658# ifdef PERL_DONT_CREATE_GVSV
1659 " PERL_DONT_CREATE_GVSV"
1660# endif
1661# ifdef PERL_IS_MINIPERL
1662 " PERL_IS_MINIPERL"
1663# endif
1664# ifdef PERL_MALLOC_WRAP
1665 " PERL_MALLOC_WRAP"
1666# endif
1667# ifdef PERL_MEM_LOG
1668 " PERL_MEM_LOG"
1669# endif
1670# ifdef PERL_MEM_LOG_NOIMPL
1671 " PERL_MEM_LOG_NOIMPL"
1672# endif
1673# ifdef PERL_USE_DEVEL
1674 " PERL_USE_DEVEL"
1675# endif
1676# ifdef PERL_USE_SAFE_PUTENV
1677 " PERL_USE_SAFE_PUTENV"
1678# endif
1679# ifdef USE_SITECUSTOMIZE
1680 " USE_SITECUSTOMIZE"
1681# endif
1682# ifdef USE_FAST_STDIO
1683 " USE_FAST_STDIO"
1684# endif
1685 ;
1686 PERL_UNUSED_ARG(cv);
1687 PERL_UNUSED_ARG(items);
1688
1689 EXTEND(SP, entries);
1690
1691 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1692 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1693 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1694
1695#ifdef __DATE__
1696# ifdef __TIME__
1697 PUSHs(Perl_newSVpvn_flags(aTHX_
1698 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1699 SVs_TEMP));
1700# else
1701 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1702 SVs_TEMP));
1703# endif
1704#else
1705 PUSHs(&PL_sv_undef);
1706#endif
1707
4a5df386
NC
1708 for (i = 1; i <= local_patch_count; i++) {
1709 /* This will be an undef, if PL_localpatches[i] is NULL. */
1710 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1711 }
1712
1713 XSRETURN(entries);
1714}
1715
be71fc8f
NC
1716#define INCPUSH_UNSHIFT 0x01
1717#define INCPUSH_ADD_OLD_VERS 0x02
1718#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1719#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1720#define INCPUSH_NOT_BASEDIR 0x10
1721#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1722#define INCPUSH_ADD_SUB_DIRS \
1723 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1724
312caa8e 1725STATIC void *
14dd3ad8 1726S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1727{
27da23d5 1728 dVAR;
2f9285f8 1729 PerlIO *rsfp;
312caa8e 1730 int argc = PL_origargc;
8f42b153 1731 char **argv = PL_origargv;
e1ec3a88 1732 const char *scriptname = NULL;
312caa8e 1733 VOL bool dosearch = FALSE;
c7030b81 1734 register char c;
bd61b366 1735 const char *cddir = NULL;
ab019eaa 1736#ifdef USE_SITECUSTOMIZE
20ef40cf 1737 bool minus_f = FALSE;
ab019eaa 1738#endif
009d90df 1739 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1740 bool add_read_e_script = FALSE;
009d90df
DM
1741
1742 SvGROW(linestr_sv, 80);
76f68e9b 1743 sv_setpvs(linestr_sv,"");
312caa8e 1744
6224f72b 1745 init_main_stash();
54310121 1746
c7030b81
NC
1747 {
1748 const char *s;
6224f72b
GS
1749 for (argc--,argv++; argc > 0; argc--,argv++) {
1750 if (argv[0][0] != '-' || !argv[0][1])
1751 break;
6224f72b
GS
1752 s = argv[0]+1;
1753 reswitch:
47f56822 1754 switch ((c = *s)) {
729a02f2 1755 case 'C':
1d5472a9
GS
1756#ifndef PERL_STRICT_CR
1757 case '\r':
1758#endif
6224f72b
GS
1759 case ' ':
1760 case '0':
1761 case 'F':
1762 case 'a':
1763 case 'c':
1764 case 'd':
1765 case 'D':
1766 case 'h':
1767 case 'i':
1768 case 'l':
1769 case 'M':
1770 case 'm':
1771 case 'n':
1772 case 'p':
1773 case 's':
1774 case 'u':
1775 case 'U':
1776 case 'v':
599cee73
PM
1777 case 'W':
1778 case 'X':
6224f72b 1779 case 'w':
97bd5664 1780 if ((s = moreswitches(s)))
6224f72b
GS
1781 goto reswitch;
1782 break;
33b78306 1783
1dbad523 1784 case 't':
22f7c9c9 1785 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1786 if( !PL_tainting ) {
1787 PL_taint_warn = TRUE;
1788 PL_tainting = TRUE;
1789 }
1790 s++;
1791 goto reswitch;
6224f72b 1792 case 'T':
22f7c9c9 1793 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1794 PL_tainting = TRUE;
317ea90d 1795 PL_taint_warn = FALSE;
6224f72b
GS
1796 s++;
1797 goto reswitch;
f86702cc 1798
bc9b29db
RH
1799 case 'E':
1800 PL_minus_E = TRUE;
1801 /* FALL THROUGH */
6224f72b 1802 case 'e':
f20b2998 1803 forbid_setid('e', FALSE);
3280af22 1804 if (!PL_e_script) {
396482e1 1805 PL_e_script = newSVpvs("");
5486870f 1806 add_read_e_script = TRUE;
6224f72b
GS
1807 }
1808 if (*++s)
3280af22 1809 sv_catpv(PL_e_script, s);
6224f72b 1810 else if (argv[1]) {
3280af22 1811 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1812 argc--,argv++;
1813 }
1814 else
47f56822 1815 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1816 sv_catpvs(PL_e_script, "\n");
6224f72b 1817 break;
afe37c7d 1818
20ef40cf 1819 case 'f':
f5542d3a 1820#ifdef USE_SITECUSTOMIZE
20ef40cf 1821 minus_f = TRUE;
f5542d3a 1822#endif
20ef40cf
GA
1823 s++;
1824 goto reswitch;
1825
6224f72b 1826 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1827 forbid_setid('I', FALSE);
bd61b366 1828 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1829 argc--,argv++;
1830 }
6224f72b 1831 if (s && *s) {
0df16ed7 1832 STRLEN len = strlen(s);
55b4bc1c 1833 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1834 }
1835 else
a67e862a 1836 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1837 break;
6224f72b 1838 case 'S':
f20b2998 1839 forbid_setid('S', FALSE);
6224f72b
GS
1840 dosearch = TRUE;
1841 s++;
1842 goto reswitch;
1843 case 'V':
7edfd0ef
NC
1844 {
1845 SV *opts_prog;
1846
7edfd0ef 1847 if (*++s != ':') {
37ca4a5b 1848 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1849 }
1850 else {
1851 ++s;
1852 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1853 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1854 0, s, 0);
1855 s += strlen(s);
1856 }
37ca4a5b 1857 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1858 /* don't look for script or read stdin */
1859 scriptname = BIT_BUCKET;
1860 goto reswitch;
6224f72b 1861 }
6224f72b 1862 case 'x':
3280af22 1863 PL_doextract = TRUE;
6224f72b 1864 s++;
304334da 1865 if (*s)
f4c556ac 1866 cddir = s;
6224f72b
GS
1867 break;
1868 case 0:
1869 break;
1870 case '-':
1871 if (!*++s || isSPACE(*s)) {
1872 argc--,argv++;
1873 goto switch_end;
1874 }
1875 /* catch use of gnu style long options */
1876 if (strEQ(s, "version")) {
dd374669 1877 s = (char *)"v";
6224f72b
GS
1878 goto reswitch;
1879 }
1880 if (strEQ(s, "help")) {
dd374669 1881 s = (char *)"h";
6224f72b
GS
1882 goto reswitch;
1883 }
1884 s--;
1885 /* FALL THROUGH */
1886 default:
cea2e8a9 1887 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1888 }
1889 }
c7030b81
NC
1890 }
1891
6224f72b 1892 switch_end:
54310121 1893
c7030b81
NC
1894 {
1895 char *s;
1896
f675dbe5
CB
1897 if (
1898#ifndef SECURE_INTERNAL_GETENV
1899 !PL_tainting &&
1900#endif
cf756827 1901 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1902 {
74288ac8
GS
1903 while (isSPACE(*s))
1904 s++;
317ea90d 1905 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1906 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1907 PL_tainting = TRUE;
317ea90d
MS
1908 PL_taint_warn = FALSE;
1909 }
74288ac8 1910 else {
bd61b366 1911 char *popt_copy = NULL;
74288ac8 1912 while (s && *s) {
54913509 1913 const char *d;
74288ac8
GS
1914 while (isSPACE(*s))
1915 s++;
1916 if (*s == '-') {
1917 s++;
1918 if (isSPACE(*s))
1919 continue;
1920 }
4ea8f8fb 1921 d = s;
74288ac8
GS
1922 if (!*s)
1923 break;
2b622f1a 1924 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1925 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1926 while (++s && *s) {
1927 if (isSPACE(*s)) {
cf756827 1928 if (!popt_copy) {
bfa6c418
NC
1929 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1930 s = popt_copy + (s - d);
1931 d = popt_copy;
cf756827 1932 }
4ea8f8fb
MS
1933 *s++ = '\0';
1934 break;
1935 }
1936 }
1c4db469 1937 if (*d == 't') {
317ea90d
MS
1938 if( !PL_tainting ) {
1939 PL_taint_warn = TRUE;
1940 PL_tainting = TRUE;
1941 }
1c4db469 1942 } else {
97bd5664 1943 moreswitches(d);
1c4db469 1944 }
6224f72b 1945 }
6224f72b
GS
1946 }
1947 }
c7030b81 1948 }
a0d0e21e 1949
87e06404 1950#if defined(USE_SITECUSTOMIZE) && !defined(PERL_IS_MINIPERL)
20ef40cf 1951 if (!minus_f) {
404ad9dc
NC
1952 /* SITELIB_EXP is a function call on Win32.
1953 The games with local $! are to avoid setting errno if there is no
1954 sitecustomize script. */
1955 const char *const sitelib = SITELIB_EXP;
29a861e7 1956 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1957 Perl_newSVpvf(aTHX_
1958 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
20ef40cf
GA
1959 }
1960#endif
1961
6224f72b
GS
1962 if (!scriptname)
1963 scriptname = argv[0];
3280af22 1964 if (PL_e_script) {
6224f72b
GS
1965 argc++,argv--;
1966 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1967 }
bd61b366 1968 else if (scriptname == NULL) {
6224f72b
GS
1969#ifdef MSDOS
1970 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1971 moreswitches("h");
6224f72b
GS
1972#endif
1973 scriptname = "-";
1974 }
1975
b7975bdd
NC
1976 /* Set $^X early so that it can be used for relocatable paths in @INC */
1977 assert (!PL_tainted);
1978 TAINT;
1979 S_set_caret_X(aTHX);
1980 TAINT_NOT;
2cace6ac 1981 init_perllib();
6224f72b 1982
a52eba0e 1983 {
f20b2998 1984 bool suidscript = FALSE;
829372d3 1985
cc69b689 1986 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1987
2f9285f8 1988 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1989 linestr_sv, rsfp);
6224f72b 1990
64ca3a65 1991#ifndef PERL_MICRO
a52eba0e
NC
1992# if defined(SIGCHLD) || defined(SIGCLD)
1993 {
1994# ifndef SIGCHLD
1995# define SIGCHLD SIGCLD
1996# endif
1997 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1998 if (sigstate == (Sighandler_t) SIG_IGN) {
1999 if (ckWARN(WARN_SIGNAL))
2000 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2001 "Can't ignore signal CHLD, forcing to default");
2002 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2003 }
0b5b802d 2004 }
a52eba0e 2005# endif
64ca3a65 2006#endif
0b5b802d 2007
e37778c2 2008 if (PL_doextract) {
faef540c 2009
f20b2998 2010 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2011 setuid scripts. */
2012 forbid_setid('x', suidscript);
f20b2998 2013 /* Hence you can't get here if suidscript is true */
faef540c 2014
2f9285f8 2015 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2016 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2017 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2018 }
f4c556ac 2019 }
6224f72b 2020
ea726b52 2021 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2022 CvUNIQUE_on(PL_compcv);
2023
dd2155a4 2024 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2025
dd69841b
BB
2026 PL_isarev = newHV();
2027
0c4f7ff0 2028 boot_core_PerlIO();
6224f72b 2029 boot_core_UNIVERSAL();
e1a479c5 2030 boot_core_mro();
4a5df386 2031 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2032
2033 if (xsinit)
acfe0abc 2034 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2035#ifndef PERL_MICRO
d0d72822 2036#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2037 init_os_extras();
6224f72b 2038#endif
64ca3a65 2039#endif
6224f72b 2040
29209bc5 2041#ifdef USE_SOCKS
1b9c9cf5
DH
2042# ifdef HAS_SOCKS5_INIT
2043 socks5_init(argv[0]);
2044# else
29209bc5 2045 SOCKSinit(argv[0]);
1b9c9cf5 2046# endif
ac27b0f5 2047#endif
29209bc5 2048
6224f72b
GS
2049 init_predump_symbols();
2050 /* init_postdump_symbols not currently designed to be called */
2051 /* more than once (ENV isn't cleared first, for example) */
2052 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2053 if (!PL_do_undump)
6224f72b
GS
2054 init_postdump_symbols(argc,argv,env);
2055
27da23d5
JH
2056 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2057 * or explicitly in some platforms.
085a54d9 2058 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2059 * look like the user wants to use UTF-8. */
a0fd4948 2060#if defined(__SYMBIAN32__)
27da23d5
JH
2061 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2062#endif
e27b5b51 2063# ifndef PERL_IS_MINIPERL
06e66572
JH
2064 if (PL_unicode) {
2065 /* Requires init_predump_symbols(). */
a05d7ebb 2066 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2067 IO* io;
2068 PerlIO* fp;
2069 SV* sv;
2070
a05d7ebb 2071 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2072 * and the default open disciplines. */
a05d7ebb
JH
2073 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2074 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2075 (fp = IoIFP(io)))
2076 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2077 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2078 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2079 (fp = IoOFP(io)))
2080 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2081 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2082 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2083 (fp = IoOFP(io)))
2084 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2085 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2086 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2087 SVt_PV)))) {
a05d7ebb
JH
2088 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2089 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2090 if (in) {
2091 if (out)
76f68e9b 2092 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2093 else
76f68e9b 2094 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2095 }
2096 else if (out)
76f68e9b 2097 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2098 SvSETMAGIC(sv);
2099 }
b310b053
JH
2100 }
2101 }
e27b5b51 2102#endif
b310b053 2103
c7030b81
NC
2104 {
2105 const char *s;
4ffa73a3
JH
2106 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2107 if (strEQ(s, "unsafe"))
2108 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2109 else if (strEQ(s, "safe"))
2110 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2111 else
2112 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2113 }
c7030b81 2114 }
4ffa73a3 2115
81d86705 2116#ifdef PERL_MAD
c7030b81
NC
2117 {
2118 const char *s;
81d86705
NC
2119 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2120 PL_madskills = 1;
2121 PL_minus_c = 1;
2122 if (!s || !s[0])
2123 PL_xmlfp = PerlIO_stdout();
2124 else {
2125 PL_xmlfp = PerlIO_open(s, "w");
2126 if (!PL_xmlfp)
2127 Perl_croak(aTHX_ "Can't open %s", s);
2128 }
1a9a51d4 2129 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2130 }
c7030b81
NC
2131 }
2132
2133 {
2134 const char *s;
81d86705
NC
2135 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2136 PL_madskills = atoi(s);
1a9a51d4 2137 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2138 }
c7030b81 2139 }
81d86705
NC
2140#endif
2141
5486870f 2142 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2143 PL_subname = newSVpvs("main");
6224f72b 2144
5486870f
DM
2145 if (add_read_e_script)
2146 filter_add(read_e_script, NULL);
2147
6224f72b
GS
2148 /* now parse the script */
2149
93189314 2150 SETERRNO(0,SS_NORMAL);
13765c85 2151 if (yyparse() || PL_parser->error_count) {
3280af22 2152 if (PL_minus_c)
cea2e8a9 2153 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2154 else {
cea2e8a9 2155 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2156 PL_origfilename);
6224f72b
GS
2157 }
2158 }
57843af0 2159 CopLINE_set(PL_curcop, 0);
3280af22 2160 PL_curstash = PL_defstash;
3280af22
NIS
2161 if (PL_e_script) {
2162 SvREFCNT_dec(PL_e_script);
a0714e2c 2163 PL_e_script = NULL;
6224f72b
GS
2164 }
2165
3280af22 2166 if (PL_do_undump)
6224f72b
GS
2167 my_unexec();
2168
57843af0
GS
2169 if (isWARN_ONCE) {
2170 SAVECOPFILE(PL_curcop);
2171 SAVECOPLINE(PL_curcop);
3280af22 2172 gv_check(PL_defstash);
57843af0 2173 }
6224f72b
GS
2174
2175 LEAVE;
2176 FREETMPS;
2177
2178#ifdef MYMALLOC
f6a607bc
RGS
2179 {
2180 const char *s;
6224f72b
GS
2181 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2182 dump_mstats("after compilation:");
f6a607bc 2183 }
6224f72b
GS
2184#endif
2185
2186 ENTER;
3280af22 2187 PL_restartop = 0;
312caa8e 2188 return NULL;
6224f72b
GS
2189}
2190
954c1994
GS
2191/*
2192=for apidoc perl_run
2193
2194Tells a Perl interpreter to run. See L<perlembed>.
2195
2196=cut
2197*/
2198
6224f72b 2199int
0cb96387 2200perl_run(pTHXx)
6224f72b 2201{
97aff369 2202 dVAR;
6224f72b 2203 I32 oldscope;
14dd3ad8 2204 int ret = 0;
db36c5a1 2205 dJMPENV;
6224f72b 2206
7918f24d
NC
2207 PERL_ARGS_ASSERT_PERL_RUN;
2208#ifndef MULTIPLICITY
ed6c66dd 2209 PERL_UNUSED_ARG(my_perl);
7918f24d 2210#endif
9d4ba2ae 2211
3280af22 2212 oldscope = PL_scopestack_ix;
96e176bf
CL
2213#ifdef VMS
2214 VMSISH_HUSHED = 0;
2215#endif
6224f72b 2216
14dd3ad8 2217 JMPENV_PUSH(ret);
6224f72b
GS
2218 switch (ret) {
2219 case 1:
2220 cxstack_ix = -1; /* start context stack again */
312caa8e 2221 goto redo_body;
14dd3ad8 2222 case 0: /* normal completion */
14dd3ad8
GS
2223 redo_body:
2224 run_body(oldscope);
14dd3ad8
GS
2225 /* FALL THROUGH */
2226 case 2: /* my_exit() */
3280af22 2227 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2228 LEAVE;
2229 FREETMPS;
3280af22 2230 PL_curstash = PL_defstash;
3a1ee7e8 2231 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2232 PL_endav && !PL_minus_c)
2233 call_list(oldscope, PL_endav);
6224f72b
GS
2234#ifdef MYMALLOC
2235 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2236 dump_mstats("after execution: ");
2237#endif
37038d91 2238 ret = STATUS_EXIT;
14dd3ad8 2239 break;
6224f72b 2240 case 3:
312caa8e
CS
2241 if (PL_restartop) {
2242 POPSTACK_TO(PL_mainstack);
2243 goto redo_body;
6224f72b 2244 }
bf49b057 2245 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2246 FREETMPS;
14dd3ad8
GS
2247 ret = 1;
2248 break;
6224f72b
GS
2249 }
2250
14dd3ad8
GS
2251 JMPENV_POP;
2252 return ret;
312caa8e
CS
2253}
2254
dd374669 2255STATIC void
14dd3ad8
GS
2256S_run_body(pTHX_ I32 oldscope)
2257{
97aff369 2258 dVAR;
6224f72b 2259 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2260 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2261
3280af22 2262 if (!PL_restartop) {
81d86705
NC
2263#ifdef PERL_MAD
2264 if (PL_xmlfp) {
2265 xmldump_all();
2266 exit(0); /* less likely to core dump than my_exit(0) */
2267 }
2268#endif
cf2782cd 2269#ifdef DEBUGGING
f0e3f042
CS
2270 if (DEBUG_x_TEST || DEBUG_B_TEST)
2271 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2272 if (!DEBUG_q_TEST)
2273 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2274#endif
6224f72b 2275
3280af22 2276 if (PL_minus_c) {
bf49b057 2277 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2278 my_exit(0);
2279 }
3280af22 2280 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2281 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2282 if (PL_initav)
2283 call_list(oldscope, PL_initav);
f1fac472
NC
2284#ifdef PERL_DEBUG_READONLY_OPS
2285 Perl_pending_Slabs_to_ro(aTHX);
2286#endif
6224f72b
GS
2287 }
2288
2289 /* do it */
2290
3280af22 2291 if (PL_restartop) {
533c011a 2292 PL_op = PL_restartop;
3280af22 2293 PL_restartop = 0;
cea2e8a9 2294 CALLRUNOPS(aTHX);
6224f72b 2295 }
3280af22
NIS
2296 else if (PL_main_start) {
2297 CvDEPTH(PL_main_cv) = 1;
533c011a 2298 PL_op = PL_main_start;
cea2e8a9 2299 CALLRUNOPS(aTHX);
6224f72b 2300 }
f6b3007c
JH
2301 my_exit(0);
2302 /* NOTREACHED */
6224f72b
GS
2303}
2304
954c1994 2305/*
ccfc67b7
JH
2306=head1 SV Manipulation Functions
2307
954c1994
GS
2308=for apidoc p||get_sv
2309
64ace3f8
NC
2310Returns the SV of the specified Perl scalar. C<flags> are passed to
2311C<gv_fetchpv>. If C<GV_ADD> is set and the
2312Perl variable does not exist then it will be created. If C<flags> is zero
2313and the variable does not exist then NULL is returned.
954c1994
GS
2314
2315=cut
2316*/
2317
6224f72b 2318SV*
64ace3f8 2319Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2320{
2321 GV *gv;
7918f24d
NC
2322
2323 PERL_ARGS_ASSERT_GET_SV;
2324
64ace3f8 2325 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2326 if (gv)
2327 return GvSV(gv);
a0714e2c 2328 return NULL;
6224f72b
GS
2329}
2330
954c1994 2331/*
ccfc67b7
JH
2332=head1 Array Manipulation Functions
2333
954c1994
GS
2334=for apidoc p||get_av
2335
cbfd0a87
NC
2336Returns the AV of the specified Perl array. C<flags> are passed to
2337C<gv_fetchpv>. If C<GV_ADD> is set and the
2338Perl variable does not exist then it will be created. If C<flags> is zero
2339and the variable does not exist then NULL is returned.
954c1994
GS
2340
2341=cut
2342*/
2343
6224f72b 2344AV*
cbfd0a87 2345Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2346{
cbfd0a87 2347 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2348
2349 PERL_ARGS_ASSERT_GET_AV;
2350
cbfd0a87 2351 if (flags)
6224f72b
GS
2352 return GvAVn(gv);
2353 if (gv)
2354 return GvAV(gv);
7d49f689 2355 return NULL;
6224f72b
GS
2356}
2357
954c1994 2358/*
ccfc67b7
JH
2359=head1 Hash Manipulation Functions
2360
954c1994
GS
2361=for apidoc p||get_hv
2362
6673a63c
NC
2363Returns the HV of the specified Perl hash. C<flags> are passed to
2364C<gv_fetchpv>. If C<GV_ADD> is set and the
2365Perl variable does not exist then it will be created. If C<flags> is zero
2366and the variable does not exist then NULL is returned.
954c1994
GS
2367
2368=cut
2369*/
2370
6224f72b 2371HV*
6673a63c 2372Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2373{
6673a63c 2374 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2375
2376 PERL_ARGS_ASSERT_GET_HV;
2377
6673a63c 2378 if (flags)
a0d0e21e
LW
2379 return GvHVn(gv);
2380 if (gv)
2381 return GvHV(gv);
5c284bb0 2382 return NULL;
a0d0e21e
LW
2383}
2384
954c1994 2385/*
ccfc67b7
JH
2386=head1 CV Manipulation Functions
2387
780a5241
NC
2388=for apidoc p||get_cvn_flags
2389
2390Returns the CV of the specified Perl subroutine. C<flags> are passed to
2391C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2392exist then it will be declared (which has the same effect as saying
2393C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2394then NULL is returned.
2395
954c1994
GS
2396=for apidoc p||get_cv
2397
780a5241 2398Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2399
2400=cut
2401*/
2402
a0d0e21e 2403CV*
780a5241 2404Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2405{
780a5241 2406 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2407 /* XXX this is probably not what they think they're getting.
2408 * It has the same effect as "sub name;", i.e. just a forward
2409 * declaration! */
7918f24d
NC
2410
2411 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2412
780a5241 2413 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2414 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2415 return newSUB(start_subparse(FALSE, 0),
780a5241 2416 newSVOP(OP_CONST, 0, sv),
5f66b61c 2417 NULL, NULL);
780a5241 2418 }
a0d0e21e 2419 if (gv)
8ebc5c01 2420 return GvCVu(gv);
601f1833 2421 return NULL;
a0d0e21e
LW
2422}
2423
2c67934f
NC
2424/* Nothing in core calls this now, but we can't replace it with a macro and
2425 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2426CV*
2427Perl_get_cv(pTHX_ const char *name, I32 flags)
2428{
7918f24d
NC
2429 PERL_ARGS_ASSERT_GET_CV;
2430
780a5241
NC
2431 return get_cvn_flags(name, strlen(name), flags);
2432}
2433
79072805
LW
2434/* Be sure to refetch the stack pointer after calling these routines. */
2435
954c1994 2436/*
ccfc67b7
JH
2437
2438=head1 Callback Functions
2439
954c1994
GS
2440=for apidoc p||call_argv
2441
2442Performs a callback to the specified Perl sub. See L<perlcall>.
2443
2444=cut
2445*/
2446
a0d0e21e 2447I32
8f42b153 2448Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2449
8ac85365
NIS
2450 /* See G_* flags in cop.h */
2451 /* null terminated arg list */
8990e307 2452{
97aff369 2453 dVAR;
a0d0e21e 2454 dSP;
8990e307 2455
7918f24d
NC
2456 PERL_ARGS_ASSERT_CALL_ARGV;
2457
924508f0 2458 PUSHMARK(SP);
a0d0e21e 2459 if (argv) {
8990e307 2460 while (*argv) {
6e449a3a 2461 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2462 argv++;
2463 }
a0d0e21e 2464 PUTBACK;
8990e307 2465 }
864dbfa3 2466 return call_pv(sub_name, flags);
8990e307
LW
2467}
2468
954c1994
GS
2469/*
2470=for apidoc p||call_pv
2471
2472Performs a callback to the specified Perl sub. See L<perlcall>.
2473
2474=cut
2475*/
2476
a0d0e21e 2477I32
864dbfa3 2478Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2479 /* name of the subroutine */
2480 /* See G_* flags in cop.h */
a0d0e21e 2481{
7918f24d
NC
2482 PERL_ARGS_ASSERT_CALL_PV;
2483
0da0e728 2484 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2485}
2486
954c1994
GS
2487/*
2488=for apidoc p||call_method
2489
2490Performs a callback to the specified Perl method. The blessed object must
2491be on the stack. See L<perlcall>.
2492
2493=cut
2494*/
2495
a0d0e21e 2496I32
864dbfa3 2497Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2498 /* name of the subroutine */
2499 /* See G_* flags in cop.h */
a0d0e21e 2500{
46ca9bac 2501 STRLEN len;
7918f24d
NC
2502 PERL_ARGS_ASSERT_CALL_METHOD;
2503
46ca9bac 2504 len = strlen(methname);
2505
2506 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2507 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2508}
2509
2510/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2511/*
2512=for apidoc p||call_sv
2513
2514Performs a callback to the Perl sub whose name is in the SV. See
2515L<perlcall>.
2516
2517=cut
2518*/
2519
a0d0e21e 2520I32
001d637e 2521Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2522 /* See G_* flags in cop.h */
a0d0e21e 2523{
27da23d5 2524 dVAR; dSP;
a0d0e21e 2525 LOGOP myop; /* fake syntax tree node */
968b3946 2526 UNOP method_op;
aa689395 2527 I32 oldmark;
8ea43dc8 2528 VOL I32 retval = 0;
a0d0e21e 2529 I32 oldscope;
54310121 2530 bool oldcatch = CATCH_GET;
6224f72b 2531 int ret;
c4420975 2532 OP* const oldop = PL_op;
db36c5a1 2533 dJMPENV;
1e422769 2534
7918f24d
NC
2535 PERL_ARGS_ASSERT_CALL_SV;
2536
a0d0e21e
LW
2537 if (flags & G_DISCARD) {
2538 ENTER;
2539 SAVETMPS;
2540 }
2f8edad0
NC
2541 if (!(flags & G_WANT)) {
2542 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2543 */
2544 flags |= G_SCALAR;
2545 }
a0d0e21e 2546
aa689395 2547 Zero(&myop, 1, LOGOP);
5f66b61c 2548 myop.op_next = NULL;
f51d4af5 2549 if (!(flags & G_NOARGS))
aa689395 2550 myop.op_flags |= OPf_STACKED;
4f911530 2551 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2552 SAVEOP();
533c011a 2553 PL_op = (OP*)&myop;
aa689395 2554
3280af22
NIS
2555 EXTEND(PL_stack_sp, 1);
2556 *++PL_stack_sp = sv;
aa689395 2557 oldmark = TOPMARK;
3280af22 2558 oldscope = PL_scopestack_ix;
a0d0e21e 2559
3280af22 2560 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2561 /* Handle first BEGIN of -d. */
3280af22 2562 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2563 /* Try harder, since this may have been a sighandler, thus
2564 * curstash may be meaningless. */
ea726b52 2565 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2566 && !(flags & G_NODEBUG))
533c011a 2567 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2568
968b3946
GS
2569 if (flags & G_METHOD) {
2570 Zero(&method_op, 1, UNOP);
2571 method_op.op_next = PL_op;
2572 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2573 method_op.op_type = OP_METHOD;
968b3946 2574 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2575 myop.op_type = OP_ENTERSUB;
f39d0b86 2576 PL_op = (OP*)&method_op;
968b3946
GS
2577 }
2578
312caa8e 2579 if (!(flags & G_EVAL)) {
0cdb2077 2580 CATCH_SET(TRUE);
d6f07c05 2581 CALL_BODY_SUB((OP*)&myop);
312caa8e 2582 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2583 CATCH_SET(oldcatch);
312caa8e
CS
2584 }
2585 else {
d78bda3d 2586 myop.op_other = (OP*)&myop;
3280af22 2587 PL_markstack_ptr--;
edb2152a 2588 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2589 PL_markstack_ptr++;
a0d0e21e 2590
14dd3ad8 2591 JMPENV_PUSH(ret);
edb2152a 2592
6224f72b
GS
2593 switch (ret) {
2594 case 0:
14dd3ad8 2595 redo_body:
d6f07c05 2596 CALL_BODY_SUB((OP*)&myop);
312caa8e 2597 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2598 if (!(flags & G_KEEPERR)) {
ab69dbc2 2599 CLEAR_ERRSV();
8433848b 2600 }
a0d0e21e 2601 break;
6224f72b 2602 case 1:
f86702cc 2603 STATUS_ALL_FAILURE;
a0d0e21e 2604 /* FALL THROUGH */
6224f72b 2605 case 2:
a0d0e21e 2606 /* my_exit() was called */
3280af22 2607 PL_curstash = PL_defstash;
a0d0e21e 2608 FREETMPS;
14dd3ad8 2609 JMPENV_POP;
cc3604b1 2610 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2611 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2612 my_exit_jump();
a0d0e21e 2613 /* NOTREACHED */
6224f72b 2614 case 3:
3280af22 2615 if (PL_restartop) {
533c011a 2616 PL_op = PL_restartop;
3280af22 2617 PL_restartop = 0;
312caa8e 2618 goto redo_body;
a0d0e21e 2619 }
3280af22 2620 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2621 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2622 retval = 0;
2623 else {
2624 retval = 1;
3280af22 2625 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2626 }
312caa8e 2627 break;
a0d0e21e 2628 }
a0d0e21e 2629
edb2152a
NC
2630 if (PL_scopestack_ix > oldscope)
2631 delete_eval_scope();
14dd3ad8 2632 JMPENV_POP;
a0d0e21e 2633 }
1e422769 2634
a0d0e21e 2635 if (flags & G_DISCARD) {
3280af22 2636 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2637 retval = 0;
2638 FREETMPS;
2639 LEAVE;
2640 }
533c011a 2641 PL_op = oldop;
a0d0e21e
LW
2642 return retval;
2643}
2644
6e72f9df 2645/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2646
954c1994
GS
2647/*
2648=for apidoc p||eval_sv
2649
2650Tells Perl to C<eval> the string in the SV.
2651
2652=cut
2653*/
2654
a0d0e21e 2655I32
864dbfa3 2656Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2657
8ac85365 2658 /* See G_* flags in cop.h */
a0d0e21e 2659{
97aff369 2660 dVAR;
924508f0 2661 dSP;
a0d0e21e 2662 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2663 VOL I32 oldmark = SP - PL_stack_base;
2664 VOL I32 retval = 0;
6224f72b 2665 int ret;
c4420975 2666 OP* const oldop = PL_op;
db36c5a1 2667 dJMPENV;
84902520 2668
7918f24d
NC
2669 PERL_ARGS_ASSERT_EVAL_SV;
2670
4633a7c4
LW
2671 if (flags & G_DISCARD) {
2672 ENTER;
2673 SAVETMPS;
2674 }
2675
462e5cf6 2676 SAVEOP();
533c011a
NIS
2677 PL_op = (OP*)&myop;
2678 Zero(PL_op, 1, UNOP);
3280af22
NIS
2679 EXTEND(PL_stack_sp, 1);
2680 *++PL_stack_sp = sv;
79072805 2681
4633a7c4
LW
2682 if (!(flags & G_NOARGS))
2683 myop.op_flags = OPf_STACKED;
5f66b61c 2684 myop.op_next = NULL;
6e72f9df 2685 myop.op_type = OP_ENTEREVAL;
4f911530 2686 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2687 if (flags & G_KEEPERR)
2688 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2689
dedbcade
DM
2690 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2691 * before a PUSHEVAL, which corrupts the stack after a croak */
2692 TAINT_PROPER("eval_sv()");
2693
14dd3ad8 2694 JMPENV_PUSH(ret);
6224f72b
GS
2695 switch (ret) {
2696 case 0:
14dd3ad8 2697 redo_body:
d6f07c05 2698 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2699 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2700 if (!(flags & G_KEEPERR)) {
ab69dbc2 2701 CLEAR_ERRSV();
8433848b 2702 }
4633a7c4 2703 break;
6224f72b 2704 case 1:
f86702cc 2705 STATUS_ALL_FAILURE;
4633a7c4 2706 /* FALL THROUGH */
6224f72b 2707 case 2:
4633a7c4 2708 /* my_exit() was called */
3280af22 2709 PL_curstash = PL_defstash;
4633a7c4 2710 FREETMPS;
14dd3ad8 2711 JMPENV_POP;
cc3604b1 2712 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2713 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2714 my_exit_jump();
4633a7c4 2715 /* NOTREACHED */
6224f72b 2716 case 3:
3280af22 2717 if (PL_restartop) {
533c011a 2718 PL_op = PL_restartop;
3280af22 2719 PL_restartop = 0;
312caa8e 2720 goto redo_body;
4633a7c4 2721 }
3280af22 2722 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2723 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2724 retval = 0;
2725 else {
2726 retval = 1;
3280af22 2727 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2728 }
312caa8e 2729 break;
4633a7c4
LW
2730 }
2731
14dd3ad8 2732 JMPENV_POP;
4633a7c4 2733 if (flags & G_DISCARD) {
3280af22 2734 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2735 retval = 0;
2736 FREETMPS;
2737 LEAVE;
2738 }
533c011a 2739 PL_op = oldop;
4633a7c4
LW
2740 return retval;
2741}
2742
954c1994
GS
2743/*
2744=for apidoc p||eval_pv
2745
2746Tells Perl to C<eval> the given string and return an SV* result.
2747
2748=cut
2749*/
2750
137443ea 2751SV*
864dbfa3 2752Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2753{
97aff369 2754 dVAR;
137443ea
PP
2755 dSP;
2756 SV* sv = newSVpv(p, 0);
2757
7918f24d
NC
2758 PERL_ARGS_ASSERT_EVAL_PV;
2759
864dbfa3 2760 eval_sv(sv, G_SCALAR);
137443ea
PP
2761 SvREFCNT_dec(sv);
2762
2763 SPAGAIN;
2764 sv = POPs;
2765 PUTBACK;
2766
2d8e6c8d 2767 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2768 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2769 }
137443ea
PP
2770
2771 return sv;
2772}
2773
4633a7c4
LW
2774/* Require a module. */
2775
954c1994 2776/*
ccfc67b7
JH
2777=head1 Embedding Functions
2778
954c1994
GS
2779=for apidoc p||require_pv
2780
7d3fb230
BS
2781Tells Perl to C<require> the file named by the string argument. It is
2782analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2783implemented that way; consider using load_module instead.
954c1994 2784
7d3fb230 2785=cut */
954c1994 2786
4633a7c4 2787void
864dbfa3 2788Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2789{
97aff369 2790 dVAR;
d3acc0f7 2791 dSP;
97aff369 2792 SV* sv;
7918f24d
NC
2793
2794 PERL_ARGS_ASSERT_REQUIRE_PV;
2795
e788e7d3 2796 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2797 PUTBACK;
be41e5d9
NC
2798 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2799 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2800 SPAGAIN;
2801 POPSTACK;
79072805
LW
2802}
2803
76e3520e 2804STATIC void
e1ec3a88 2805S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2806{
ab821d7f 2807 /* This message really ought to be max 23 lines.
75c72d73 2808 * Removed -h because the user already knows that option. Others? */
fb73857a 2809
27da23d5 2810 static const char * const usage_msg[] = {
aefc56c5 2811"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2812"-a autosplit mode with -n or -p (splits $_ into @F)",
2813"-C[number/list] enables the listed Unicode features",
2814"-c check syntax only (runs BEGIN and CHECK blocks)",
2815"-d[:debugger] run program under debugger",
2816"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2817"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2818"-E program like -e, but enables all optional features",
aefc56c5 2819"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2820"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2821"-i[extension] edit <> files in place (makes backup if extension supplied)",
2822"-Idirectory specify @INC/#include directory (several -I's allowed)",
2823"-l[octal] enable line ending processing, specifies line terminator",
2824"-[mM][-]module execute \"use/no module...\" before executing program",
2825"-n assume \"while (<>) { ... }\" loop around program",
2826"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2827"-s enable rudimentary parsing for switches after programfile",
2828"-S look for programfile using PATH environment variable",
2829"-t enable tainting warnings",
2830"-T enable tainting checks",
2831"-u dump core after parsing program",
2832"-U allow unsafe operations",
2833"-v print version, subversion (includes VERY IMPORTANT perl info)",
2834"-V[:variable] print configuration summary (or a single Config.pm variable)",
2835"-w enable many useful warnings (RECOMMENDED)",
2836"-W enable all warnings",
2837"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2838"-X disable all warnings",
fb73857a
PP
2839"\n",
2840NULL
2841};
27da23d5 2842 const char * const *p = usage_msg;
fb73857a 2843
7918f24d
NC
2844 PERL_ARGS_ASSERT_USAGE;
2845
b0e47665
GS
2846 PerlIO_printf(PerlIO_stdout(),
2847 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2848 name);
fb73857a 2849 while (*p)
b0e47665 2850 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2851}
2852
b4ab917c
DM
2853/* convert a string of -D options (or digits) into an int.
2854 * sets *s to point to the char after the options */
2855
2856#ifdef DEBUGGING
2857int
e1ec3a88 2858Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2859{
27da23d5 2860 static const char * const usage_msgd[] = {
e6e64d9b
JC
2861 " Debugging flag values: (see also -d)",
2862 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2863 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2864 " l Context (loop) stack processing",
2865 " t Trace execution",
2866 " o Method and overloading resolution",
2867 " c String/numeric conversions",
4c84d7f2 2868 " P Print profiling info, source file input state",
d7a2c63c 2869 " m Memory and SV allocation",
e6e64d9b
JC
2870 " f Format processing",
2871 " r Regular expression parsing and execution",
2872 " x Syntax tree dump",
3679267a 2873 " u Tainting checks",
e6e64d9b
JC
2874 " H Hash dump -- usurps values()",
2875 " X Scratchpad allocation",
2876 " D Cleaning up",
e6e64d9b
JC
2877 " T Tokenising",
2878 " R Include reference counts of dumped variables (eg when using -Ds)",
2879 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2880 " v Verbose: use in conjunction with other flags",
2881 " C Copy On Write",
2882 " A Consistency checks on internal structures",
3679267a 2883 " q quiet - currently only suppresses the 'EXECUTING' message",
d7c0d282 2884 " M trace smart match resolution",
cc8773c0 2885 " B dump suBroutine definitions, including special Blocks like BEGIN",
e6e64d9b
JC
2886 NULL
2887 };
b4ab917c 2888 int i = 0;
7918f24d
NC
2889
2890 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2891
b4ab917c
DM
2892 if (isALPHA(**s)) {
2893 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2894 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2895
2896 for (; isALNUM(**s); (*s)++) {
c4420975 2897 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2898 if (d)
2899 i |= 1 << (d - debopts);
2900 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2901 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2902 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2903 }
2904 }
e6e64d9b 2905 else if (isDIGIT(**s)) {
b4ab917c
DM
2906 i = atoi(*s);
2907 for (; isALNUM(**s); (*s)++) ;
2908 }
ddcf8bc1 2909 else if (givehelp) {
06e869a4 2910 const char *const *p = usage_msgd;
e6e64d9b
JC
2911 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2912 }
b4ab917c
DM
2913# ifdef EBCDIC
2914 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2915 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2916 "-Dp not implemented on this platform\n");
2917# endif
2918 return i;
2919}
2920#endif
2921
79072805
LW
2922/* This routine handles any switches that can be given during run */
2923
c7030b81
NC
2924const char *
2925Perl_moreswitches(pTHX_ const char *s)
79072805 2926{
27da23d5 2927 dVAR;
84c133a0 2928 UV rschar;
0544e6df 2929 const char option = *s; /* used to remember option in -m/-M code */
79072805 2930
7918f24d
NC
2931 PERL_ARGS_ASSERT_MORESWITCHES;
2932
79072805
LW
2933 switch (*s) {
2934 case '0':
a863c7d1 2935 {
f2095865 2936 I32 flags = 0;
a3b680e6 2937 STRLEN numlen;
f2095865
JH
2938
2939 SvREFCNT_dec(PL_rs);
2940 if (s[1] == 'x' && s[2]) {
a3b680e6 2941 const char *e = s+=2;
f2095865
JH
2942 U8 *tmps;
2943
a3b680e6
AL
2944 while (*e)
2945 e++;
f2095865
JH
2946 numlen = e - s;
2947 flags = PERL_SCAN_SILENT_ILLDIGIT;
2948 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2949 if (s + numlen < e) {
2950 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2951 numlen = 0;
2952 s--;
2953 }
396482e1 2954 PL_rs = newSVpvs("");
c5661c80 2955 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2956 tmps = (U8*)SvPVX(PL_rs);
2957 uvchr_to_utf8(tmps, rschar);
2958 SvCUR_set(PL_rs, UNISKIP(rschar));
2959 SvUTF8_on(PL_rs);
2960 }
2961 else {
2962 numlen = 4;
2963 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2964 if (rschar & ~((U8)~0))
2965 PL_rs = &PL_sv_undef;
2966 else if (!rschar && numlen >= 2)
396482e1 2967 PL_rs = newSVpvs("");
f2095865
JH
2968 else {
2969 char ch = (char)rschar;
2970 PL_rs = newSVpvn(&ch, 1);
2971 }
2972 }
64ace3f8 2973 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2974 return s + numlen;
a863c7d1 2975 }
46487f74 2976 case 'C':
a05d7ebb 2977 s++;
dd374669 2978 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2979 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2980 PL_utf8cache = -1;
46487f74 2981 return s;
2304df62 2982 case 'F':
3280af22 2983 PL_minus_F = TRUE;
ebce5377
RGS
2984 PL_splitstr = ++s;
2985 while (*s && !isSPACE(*s)) ++s;
e49e380e 2986 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 2987 return s;
79072805 2988 case 'a':
3280af22 2989 PL_minus_a = TRUE;
79072805
LW
2990 s++;
2991 return s;
2992 case 'c':
3280af22 2993 PL_minus_c = TRUE;
79072805
LW
2994 s++;
2995 return s;
2996 case 'd':
f20b2998 2997 forbid_setid('d', FALSE);
4633a7c4 2998 s++;
2cbb2ee1
RGS
2999
3000 /* -dt indicates to the debugger that threads will be used */
3001 if (*s == 't' && !isALNUM(s[1])) {
3002 ++s;
3003 my_setenv("PERL5DB_THREADED", "1");
3004 }
3005
70c94a19
RR
3006 /* The following permits -d:Mod to accepts arguments following an =
3007 in the fashion that -MSome::Mod does. */
3008 if (*s == ':' || *s == '=') {
f85893a1
NC
3009 const char *start = ++s;
3010 const char *const end = s + strlen(s);
396482e1 3011 SV * const sv = newSVpvs("use Devel::");
f85893a1 3012
70c94a19
RR
3013 /* We now allow -d:Module=Foo,Bar */
3014 while(isALNUM(*s) || *s==':') ++s;
3015 if (*s != '=')
f85893a1 3016 sv_catpvn(sv, start, end - start);
70c94a19
RR
3017 else {
3018 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3019 /* Don't use NUL as q// delimiter here, this string goes in the
3020 * environment. */
3021 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3022 }
f85893a1 3023 s = end;
184f32ec 3024 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3025 SvREFCNT_dec(sv);
4633a7c4 3026 }
ed094faf 3027 if (!PL_perldb) {
3280af22 3028 PL_perldb = PERLDB_ALL;
a0d0e21e 3029 init_debugger();
ed094faf 3030 }
79072805
LW
3031 return s;
3032 case 'D':
0453d815 3033 {
79072805 3034#ifdef DEBUGGING
f20b2998 3035 forbid_setid('D', FALSE);
b4ab917c 3036 s++;
dd374669 3037 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3038#else /* !DEBUGGING */
0453d815 3039 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3040 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3041 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3042 for (s++; isALNUM(*s); s++) ;
79072805 3043#endif
79072805 3044 return s;
0453d815 3045 }
4633a7c4 3046 case 'h':
ac27b0f5 3047 usage(PL_origargv[0]);
7ca617d0 3048 my_exit(0);
79072805 3049 case 'i':
43c5f42d 3050 Safefree(PL_inplace);
c030f24b
GH
3051#if defined(__CYGWIN__) /* do backup extension automagically */
3052 if (*(s+1) == '\0') {
c86a4f2e 3053 PL_inplace = savepvs(".bak");
c030f24b
GH
3054 return s+1;
3055 }
3056#endif /* __CYGWIN__ */
5ef5d758 3057 {
d4c19fe8 3058 const char * const start = ++s;
5ef5d758
NC
3059 while (*s && !isSPACE(*s))
3060 ++s;
3061
3062 PL_inplace = savepvn(start, s - start);
3063 }
7b8d334a 3064 if (*s) {
5ef5d758 3065 ++s;
7b8d334a 3066 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3067 s++;
7b8d334a 3068 }
fb73857a 3069 return s;
4e49a025 3070 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3071 forbid_setid('I', FALSE);
fb73857a
PP
3072 ++s;
3073 while (*s && isSPACE(*s))
3074 ++s;
3075 if (*s) {
c7030b81 3076 const char *e, *p;
0df16ed7
GS
3077 p = s;
3078 /* ignore trailing spaces (possibly followed by other switches) */
3079 do {
3080 for (e = p; *e && !isSPACE(*e); e++) ;
3081 p = e;
3082 while (isSPACE(*p))
3083 p++;
3084 } while (*p && *p != '-');
55b4bc1c 3085 incpush(s, e-s,
e28f3139 3086 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3087 s = p;
3088 if (*s == '-')
3089 s++;
79072805
LW
3090 }
3091 else
a67e862a 3092 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3093 return s;
79072805 3094 case 'l':
3280af22 3095 PL_minus_l = TRUE;
79072805 3096 s++;
7889fe52
NIS
3097 if (PL_ors_sv) {
3098 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3099 PL_ors_sv = NULL;
7889fe52 3100 }
79072805 3101 if (isDIGIT(*s)) {
53305cf1 3102 I32 flags = 0;
a3b680e6 3103 STRLEN numlen;
396482e1 3104 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3105 numlen = 3 + (*s == '0');
3106 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3107 s += numlen;
3108 }
3109 else {
8bfdd7d9 3110 if (RsPARA(PL_rs)) {
396482e1 3111 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3112 }
3113 else {
8bfdd7d9 3114 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3115 }
79072805
LW
3116 }
3117 return s;
1a30305b 3118 case 'M':
f20b2998 3119 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3120 /* FALL THROUGH */
3121 case 'm':
f20b2998 3122 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3123 if (*++s) {
c7030b81 3124 const char *start;
b64cb68c 3125 const char *end;
11343788 3126 SV *sv;
e1ec3a88 3127 const char *use = "use ";
0544e6df 3128 bool colon = FALSE;
a5f75d66 3129 /* -M-foo == 'no foo' */
d0043bd1
NC
3130 /* Leading space on " no " is deliberate, to make both
3131 possibilities the same length. */
3132 if (*s == '-') { use = " no "; ++s; }
3133 sv = newSVpvn(use,4);
a5f75d66 3134 start = s;
1a30305b 3135 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3136 while(isALNUM(*s) || *s==':') {
3137 if( *s++ == ':' ) {
3138 if( *s == ':' )
3139 s++;
3140 else
3141 colon = TRUE;
3142 }
3143 }
3144 if (s == start)
3145 Perl_croak(aTHX_ "Module name required with -%c option",
3146 option);
3147 if (colon)
3148 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3149 "contains single ':'",
63da6837 3150 (int)(s - start), start, option);
b64cb68c 3151 end = s + strlen(s);
c07a80fd 3152 if (*s != '=') {
b64cb68c 3153 sv_catpvn(sv, start, end - start);
0544e6df 3154 if (option == 'm') {
c07a80fd 3155 if (*s != '\0')
cea2e8a9 3156 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3157 sv_catpvs( sv, " ()");
c07a80fd
PP
3158 }
3159 } else {
11343788 3160 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3161 /* Use NUL as q''-delimiter. */
3162 sv_catpvs(sv, " split(/,/,q\0");
3163 ++s;
3164 sv_catpvn(sv, s, end - s);
396482e1 3165 sv_catpvs(sv, "\0)");
c07a80fd 3166 }
b64cb68c 3167 s = end;
29a861e7 3168 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3169 }
3170 else
0544e6df 3171 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3172 return s;
79072805 3173 case 'n':
3280af22 3174 PL_minus_n = TRUE;
79072805
LW
3175 s++;
3176 return s;
3177 case 'p':
3280af22 3178 PL_minus_p = TRUE;
79072805
LW
3179 s++;
3180 return s;
3181 case 's':
f20b2998 3182 forbid_setid('s', FALSE);
3280af22 3183 PL_doswitches = TRUE;
79072805
LW
3184 s++;
3185 return s;
6537fe72
MS
3186 case 't':
3187 if (!PL_tainting)
22f7c9c9 3188 TOO_LATE_FOR('t');
6537fe72
MS
3189 s++;
3190 return s;
463ee0b2 3191 case 'T':
3280af22 3192 if (!PL_tainting)
22f7c9c9 3193 TOO_LATE_FOR('T');
463ee0b2
LW
3194 s++;
3195 return s;
79072805 3196 case 'u':
3280af22 3197 PL_do_undump = TRUE;
79072805
LW
3198 s++;
3199 return s;
3200 case 'U':
3280af22 3201 PL_unsafe = TRUE;
79072805
LW
3202 s++;
3203 return s;
3204 case 'v':
d7aa5382 3205 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3206 upg_version(PL_patchlevel, TRUE);
8e9464f1 3207#if !defined(DGUX)
46807d8e
YO
3208 {
3209 SV* level= vstringify(PL_patchlevel);
3210#ifdef PERL_PATCHNUM
23d483e2
NC
3211# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3212 SV *num = newSVpvs(PERL_PATCHNUM "*");
3213# else
3214 SV *num = newSVpvs(PERL_PATCHNUM);
3215# endif
46807d8e
YO
3216
3217 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3218 SvREFCNT_dec(level);
3219 level= num;
3220 } else {
d0a9311f 3221 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3222 SvREFCNT_dec(num);
3223 }
3224 #endif
3225 PerlIO_printf(PerlIO_stdout(),
f1f66076 3226 "\nThis is perl, %"SVf
9f28b43c
NC
3227 " built for " ARCHNAME,
3228 level);
46807d8e
YO
3229 SvREFCNT_dec(level);
3230 }
8e9464f1
JH
3231#else /* DGUX */
3232/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3233 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3234 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3235 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3236 PerlIO_printf(PerlIO_stdout(),
3237 Perl_form(aTHX_ " built under %s at %s %s\n",
3238 OSNAME, __DATE__, __TIME__));
3239 PerlIO_printf(PerlIO_stdout(),
3240 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3241 OSVERS));
8e9464f1 3242#endif /* !DGUX */
fb73857a
PP
3243#if defined(LOCAL_PATCH_COUNT)
3244 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3245 PerlIO_printf(PerlIO_stdout(),
3246 "\n(with %d registered patch%s, "
3247 "see perl -V for more detail)",
bb7a0f54 3248 LOCAL_PATCH_COUNT,
b0e47665 3249 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3250#endif
1a30305b 3251
b0e47665 3252 PerlIO_printf(PerlIO_stdout(),
737f4459 3253 "\n\nCopyright 1987-2009, Larry Wall\n");
79072805 3254#ifdef MSDOS
b0e47665
GS
3255 PerlIO_printf(PerlIO_stdout(),
3256 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3257#endif
3258#ifdef DJGPP
b0e47665
GS
3259 PerlIO_printf(PerlIO_stdout(),
3260 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3261 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3262#endif
79072805 3263#ifdef OS2
b0e47665
GS
3264 PerlIO_printf(PerlIO_stdout(),
3265 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3266 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3267#endif
79072805 3268#ifdef atarist
b0e47665
GS
3269 PerlIO_printf(PerlIO_stdout(),
3270 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3271#endif
a3f9223b 3272#ifdef __BEOS__
b0e47665
GS
3273 PerlIO_printf(PerlIO_stdout(),
3274 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3275#endif
1d84e8df 3276#ifdef MPE
b0e47665 3277 PerlIO_printf(PerlIO_stdout(),
e583a879 3278 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3279#endif
9d116dd7 3280#ifdef OEMVS
b0e47665
GS
3281 PerlIO_printf(PerlIO_stdout(),
3282 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3283#endif
495c5fdc 3284#ifdef __VOS__
b0e47665 3285 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3286 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3287#endif
092bebab 3288#ifdef __OPEN_VM
b0e47665
GS
3289 PerlIO_printf(PerlIO_stdout(),
3290 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3291#endif
a1a0e61e 3292#ifdef POSIX_BC
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3295#endif
f83d2536 3296#ifdef EPOC
b0e47665 3297 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3298 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3299#endif
e1caacb4 3300#ifdef UNDER_CE
b475b3e6
JH
3301 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3302 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3303 wce_hitreturn();
3304#endif
a0fd4948 3305#ifdef __SYMBIAN32__
27da23d5
JH
3306 PerlIO_printf(PerlIO_stdout(),
3307 "Symbian port by Nokia, 2004-2005\n");
3308#endif
baed7233
DL
3309#ifdef BINARY_BUILD_NOTICE
3310 BINARY_BUILD_NOTICE;
3311#endif
b0e47665
GS
3312 PerlIO_printf(PerlIO_stdout(),
3313 "\n\
79072805 3314Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3315GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3316Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3317this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3318Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3319 my_exit(0);
79072805 3320 case 'w':
b2e5e6ba 3321 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3322 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3323 }
599cee73
PM
3324 s++;
3325 return s;
3326 case 'W':
ac27b0f5 3327 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3328 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3329 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3330 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3331 s++;
3332 return s;
3333 case 'X':
ac27b0f5 3334 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3335 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3336 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3337 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3338 s++;
3339 return s;
a0d0e21e 3340 case '*':
79072805 3341 case ' ':
d3133c89
NC
3342 while( *s == ' ' )
3343 ++s;
3344 if (s[0] == '-') /* Additional switches on #! line. */
3345 return s+1;
79072805 3346 break;
a0d0e21e 3347 case '-':
79072805 3348 case 0:
51882d45 3349#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3350 case '\r':
3351#endif
79072805
LW
3352 case '\n':
3353 case '\t':
3354 break;
aa689395
PP
3355#ifdef ALTERNATE_SHEBANG
3356 case 'S': /* OS/2 needs -S on "extproc" line. */
3357 break;
3358#endif
79072805 3359 default:
cea2e8a9 3360 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3361 }
bd61b366 3362 return NULL;
79072805
LW
3363}
3364
3365/* compliments of Tom Christiansen */
3366
3367/* unexec() can be found in the Gnu emacs distribution */
ee580363 3368/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3369
3370void
864dbfa3 3371Perl_my_unexec(pTHX)
79072805 3372{
b37c2d43 3373 PERL_UNUSED_CONTEXT;
79072805 3374#ifdef UNEXEC
b37c2d43
AL
3375 SV * prog = newSVpv(BIN_EXP, 0);
3376 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3377 int status = 1;
79072805
LW
3378 extern int etext;
3379
396482e1 3380 sv_catpvs(prog, "/perl");
396482e1 3381 sv_catpvs(file, ".perldump");
79072805 3382
ee580363
GS
3383 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3384 /* unexec prints msg to stderr in case of failure */
6ad3d225 3385 PerlProc_exit(status);
79072805 3386#else
a5f75d66
AD
3387# ifdef VMS
3388# include <lib$routines.h>
3389 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3390# elif defined(WIN32) || defined(__CYGWIN__)
3391 Perl_croak(aTHX_ "dump is not supported");
aa689395 3392# else
79072805 3393 ABORT(); /* for use with undump */
aa689395 3394# endif
a5f75d66 3395#endif
79072805
LW
3396}
3397
cb68f92d
GS
3398/* initialize curinterp */
3399STATIC void
cea2e8a9 3400S_init_interp(pTHX)
cb68f92d 3401{
97aff369 3402 dVAR;
acfe0abc
GS
3403#ifdef MULTIPLICITY
3404# define PERLVAR(var,type)
3405# define PERLVARA(var,n,type)
3406# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3407# define PERLVARI(var,type,init) aTHX->var = init;
3408# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3409# else
acfe0abc
GS
3410# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3411# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3412# endif
acfe0abc 3413# include "intrpvar.h"
acfe0abc
GS
3414# undef PERLVAR
3415# undef PERLVARA
3416# undef PERLVARI
3417# undef PERLVARIC
3418#else
3419# define PERLVAR(var,type)
3420# define PERLVARA(var,n,type)
3421# define PERLVARI(var,type,init) PL_##var = init;
3422# define PERLVARIC(var,type,init) PL_##var = init;
3423# include "intrpvar.h"
acfe0abc
GS
3424# undef PERLVAR
3425# undef PERLVARA
3426# undef PERLVARI
3427# undef PERLVARIC
cb68f92d
GS
3428#endif
3429
46ab3289
NC
3430 /* As these are inside a structure, PERLVARI isn't capable of initialising
3431 them */
6c3f0a89
NC
3432 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3433 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3434}
3435
76e3520e 3436STATIC void
cea2e8a9 3437S_init_main_stash(pTHX)
79072805 3438{
97aff369 3439 dVAR;
463ee0b2 3440 GV *gv;
6e72f9df 3441
3280af22 3442 PL_curstash = PL_defstash = newHV();
23579a14
NC
3443 /* We know that the string "main" will be in the global shared string
3444 table, so it's a small saving to use it rather than allocate another
3445 8 bytes. */
18916d0d 3446 PL_curstname = newSVpvs_share("main");
fafc274c 3447 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3448 /* If we hadn't caused another reference to "main" to be in the shared
3449 string table above, then it would be worth reordering these two,
3450 because otherwise all we do is delete "main" from it as a consequence
3451 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3452 SvREFCNT_dec(GvHV(gv));
23579a14 3453 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3454 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3455 SvREADONLY_on(gv);
fafc274c
NC
3456 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3457 SVt_PVAV)));
5a5094bd 3458 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3459 GvMULTI_on(PL_incgv);
fafc274c 3460 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
3280af22 3461 GvMULTI_on(PL_hintgv);
fafc274c 3462 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3463 SvREFCNT_inc_simple_void(PL_defgv);
fafc274c 3464 PL_errgv = gv_HVadd(gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV));
5a5094bd 3465 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3466 GvMULTI_on(PL_errgv);
fafc274c 3467 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
3280af22 3468 GvMULTI_on(PL_replgv);
cea2e8a9 3469 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2
NC
3470#ifdef PERL_DONT_CREATE_GVSV
3471 gv_SVadd(PL_errgv);
3472#endif
38a03e6e 3473 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3474 CLEAR_ERRSV();
3280af22 3475 PL_curstash = PL_defstash;
11faa288 3476 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC
3477 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3478 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3479 SVt_PVHV));
4633a7c4 3480 /* We must init $/ before switches are processed. */
64ace3f8 3481 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW
3482}
3483
fdf5d70d 3484STATIC int
2f352907 3485S_open_script(pTHX_ const char *scriptname, bool dosearch,
f20b2998 3486 bool *suidscript, PerlIO **rsfpp)
79072805 3487{
fdf5d70d 3488 int fdscript = -1;
27da23d5 3489 dVAR;
1b24ed4b 3490
7918f24d
NC
3491 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3492