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For -I, need to also unshift version and architecture libs onto @INC (RT#6665)
[perl5.git] / perl.c
CommitLineData
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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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DM
19/* This file contains the top-level functions that are used to create, use
20 * and destroy a perl interpreter, plus the functions used by XS code to
21 * call back into perl. Note that it does not contain the actual main()
ddfa107c 22 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
23 */
24
378cc40b 25#include "EXTERN.h"
864dbfa3 26#define PERL_IN_PERL_C
378cc40b 27#include "perl.h"
e3321bb0 28#include "patchlevel.h" /* for local_patches */
378cc40b 29
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30#ifdef NETWARE
31#include "nwutil.h"
32char *nw_get_sitelib(const char *pl);
33#endif
34
df5cef82 35/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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36#ifdef I_UNISTD
37#include <unistd.h>
38#endif
a0d0e21e 39
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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
2aa47728
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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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AL
84 if (PL_op) \
85 CALLRUNOPS(aTHX);
86
87#define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
139d0ce6 89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
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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
52853b95
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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
0631ea03
AB
335#endif
336
5311654c 337 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 338 * available or if the sysconf() fails, use the HZ.
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JH
339 * BeOS has those, but returns the wrong value.
340 * The HZ if not originally defined has been by now
341 * been defined as CLK_TCK, if available. */
dbc1d986 342#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
343 PL_clocktick = sysconf(_SC_CLK_TCK);
344 if (PL_clocktick <= 0)
345#endif
346 PL_clocktick = HZ;
347
081fc587
AB
348 PL_stashcache = newHV();
349
8cb289bd 350 PL_patchlevel = Perl_newSVpvf(aTHX_ "v%d.%d.%d", (int)PERL_REVISION,
e6830b13 351 (int)PERL_VERSION, (int)PERL_SUBVERSION);
d7aa5382 352
27da23d5
JH
353#ifdef HAS_MMAP
354 if (!PL_mmap_page_size) {
355#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
356 {
357 SETERRNO(0, SS_NORMAL);
358# ifdef _SC_PAGESIZE
359 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
360# else
361 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
362# endif
363 if ((long) PL_mmap_page_size < 0) {
364 if (errno) {
44f8325f 365 SV * const error = ERRSV;
d4c19fe8 366 SvUPGRADE(error, SVt_PV);
0510663f 367 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
368 }
369 else
370 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
371 }
372 }
373#else
374# ifdef HAS_GETPAGESIZE
375 PL_mmap_page_size = getpagesize();
376# else
377# if defined(I_SYS_PARAM) && defined(PAGESIZE)
378 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
379# endif
380# endif
381#endif
382 if (PL_mmap_page_size <= 0)
383 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
384 (IV) PL_mmap_page_size);
385 }
386#endif /* HAS_MMAP */
387
388#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
389 PL_timesbase.tms_utime = 0;
390 PL_timesbase.tms_stime = 0;
391 PL_timesbase.tms_cutime = 0;
392 PL_timesbase.tms_cstime = 0;
393#endif
394
a3e6e81e 395 PL_registered_mros = newHV();
9e169432
NC
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
a3e6e81e 398
8990e307 399 ENTER;
79072805
LW
400}
401
954c1994 402/*
62375a60
NIS
403=for apidoc nothreadhook
404
405Stub that provides thread hook for perl_destruct when there are
406no threads.
407
408=cut
409*/
410
411int
4e9e3734 412Perl_nothreadhook(pTHX)
62375a60 413{
96a5add6 414 PERL_UNUSED_CONTEXT;
62375a60
NIS
415 return 0;
416}
417
41e4abd8
NC
418#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419void
420Perl_dump_sv_child(pTHX_ SV *sv)
421{
422 ssize_t got;
bf357333
NC
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
425 union control_un control;
426 struct msghdr msg;
808ad2d0 427 struct iovec vec[2];
bf357333 428 struct cmsghdr *cmptr;
808ad2d0
NC
429 int returned_errno;
430 unsigned char buffer[256];
41e4abd8 431
7918f24d
NC
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433
bf357333 434 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
435 return;
436
437 PerlIO_flush(Perl_debug_log);
438
bf357333
NC
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 443 be open, the wait would be forever.) */
bf357333
NC
444
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
448 msg.msg_name = NULL;
449 msg.msg_namelen = 0;
450 msg.msg_iov = vec;
808ad2d0 451 msg.msg_iovlen = 1;
bf357333
NC
452
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
458
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
462
463 if(got < 0) {
bf357333 464 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
465 abort();
466 }
bf357333
NC
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
469 abort();
470 }
471
808ad2d0
NC
472 /* Return protocol is
473 int: errno value
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
476 */
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
480 vec[1].iov_len = 1;
481
482 got = readv(sock, vec, 2);
41e4abd8
NC
483
484 if(got < 0) {
485 perror("Debug leaking scalars parent read failed");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
808ad2d0 489 if(got < sizeof(returned_errno) + 1) {
41e4abd8 490 perror("Debug leaking scalars parent short read");
808ad2d0 491 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
492 abort();
493 }
494
808ad2d0
NC
495 if (*buffer) {
496 got = read(sock, buffer + 1, *buffer);
497 if(got < 0) {
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
500 abort();
501 }
502
503 if(got < *buffer) {
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
506 abort();
507 }
508 }
509
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
41e4abd8
NC
514 }
515}
516#endif
517
62375a60 518/*
954c1994
GS
519=for apidoc perl_destruct
520
521Shuts down a Perl interpreter. See L<perlembed>.
522
523=cut
524*/
525
31d77e54 526int
0cb96387 527perl_destruct(pTHXx)
79072805 528{
27da23d5 529 dVAR;
be2ea8ed 530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 531 HV *hv;
2aa47728 532#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
533 pid_t child;
534#endif
8990e307 535
7918f24d
NC
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537#ifndef MULTIPLICITY
ed6c66dd 538 PERL_UNUSED_ARG(my_perl);
7918f24d 539#endif
9d4ba2ae 540
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
545#ifdef DEBUGGING
546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
e1ec3a88 549 const int i = atoi(s);
5f05dabc
PP
550 if (destruct_level < i)
551 destruct_level = i;
552 }
4633a7c4
LW
553 }
554#endif
555
27da23d5 556 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
557 dJMPENV;
558 int x = 0;
559
560 JMPENV_PUSH(x);
1b6737cc 561 PERL_UNUSED_VAR(x);
f3faeb53
AB
562 if (PL_endav && !PL_minus_c)
563 call_list(PL_scopestack_ix, PL_endav);
564 JMPENV_POP;
26f423df 565 }
f3faeb53 566 LEAVE;
a0d0e21e
LW
567 FREETMPS;
568
e00b64d4 569 /* Need to flush since END blocks can produce output */
f13a2bc0 570 my_fflush_all();
e00b64d4 571
62375a60
NIS
572 if (CALL_FPTR(PL_threadhook)(aTHX)) {
573 /* Threads hook has vetoed further cleanup */
c301d606 574 PL_veto_cleanup = TRUE;
37038d91 575 return STATUS_EXIT;
62375a60
NIS
576 }
577
2aa47728
NC
578#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
579 if (destruct_level != 0) {
580 /* Fork here to create a child. Our child's job is to preserve the
581 state of scalars prior to destruction, so that we can instruct it
582 to dump any scalars that we later find have leaked.
583 There's no subtlety in this code - it assumes POSIX, and it doesn't
584 fail gracefully */
585 int fd[2];
586
587 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
588 perror("Debug leaking scalars socketpair failed");
589 abort();
590 }
591
592 child = fork();
593 if(child == -1) {
594 perror("Debug leaking scalars fork failed");
595 abort();
596 }
597 if (!child) {
598 /* We are the child */
3125a5a4
NC
599 const int sock = fd[1];
600 const int debug_fd = PerlIO_fileno(Perl_debug_log);
601 int f;
808ad2d0
NC
602 const char *where;
603 /* Our success message is an integer 0, and a char 0 */
b61433a9 604 static const char success[sizeof(int) + 1] = {0};
3125a5a4 605
2aa47728 606 close(fd[0]);
2aa47728 607
3125a5a4
NC
608 /* We need to close all other file descriptors otherwise we end up
609 with interesting hangs, where the parent closes its end of a
610 pipe, and sits waiting for (another) child to terminate. Only
611 that child never terminates, because it never gets EOF, because
bf357333
NC
612 we also have the far end of the pipe open. We even need to
613 close the debugging fd, because sometimes it happens to be one
614 end of a pipe, and a process is waiting on the other end for
615 EOF. Normally it would be closed at some point earlier in
616 destruction, but if we happen to cause the pipe to remain open,
617 EOF never occurs, and we get an infinite hang. Hence all the
618 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
619
620 f = sysconf(_SC_OPEN_MAX);
621 if(f < 0) {
808ad2d0
NC
622 where = "sysconf failed";
623 goto abort;
3125a5a4
NC
624 }
625 while (f--) {
626 if (f == sock)
627 continue;
3125a5a4
NC
628 close(f);
629 }
630
2aa47728
NC
631 while (1) {
632 SV *target;
bf357333
NC
633 union control_un control;
634 struct msghdr msg;
635 struct iovec vec[1];
636 struct cmsghdr *cmptr;
637 ssize_t got;
638 int got_fd;
639
640 msg.msg_control = control.control;
641 msg.msg_controllen = sizeof(control.control);
642 /* We're a connected socket so we don't need a source */
643 msg.msg_name = NULL;
644 msg.msg_namelen = 0;
645 msg.msg_iov = vec;
646 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
647
648 vec[0].iov_base = (void*)&target;
649 vec[0].iov_len = sizeof(target);
650
651 got = recvmsg(sock, &msg, 0);
2aa47728
NC
652
653 if(got == 0)
654 break;
655 if(got < 0) {
808ad2d0
NC
656 where = "recv failed";
657 goto abort;
2aa47728
NC
658 }
659 if(got < sizeof(target)) {
808ad2d0
NC
660 where = "short recv";
661 goto abort;
2aa47728 662 }
bf357333 663
808ad2d0
NC
664 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
665 where = "no cmsg";
666 goto abort;
667 }
668 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
669 where = "wrong cmsg_len";
670 goto abort;
671 }
672 if(cmptr->cmsg_level != SOL_SOCKET) {
673 where = "wrong cmsg_level";
674 goto abort;
675 }
676 if(cmptr->cmsg_type != SCM_RIGHTS) {
677 where = "wrong cmsg_type";
678 goto abort;
679 }
bf357333
NC
680
681 got_fd = *(int*)CMSG_DATA(cmptr);
682 /* For our last little bit of trickery, put the file descriptor
683 back into Perl_debug_log, as if we never actually closed it
684 */
808ad2d0
NC
685 if(got_fd != debug_fd) {
686 if (dup2(got_fd, debug_fd) == -1) {
687 where = "dup2";
688 goto abort;
689 }
690 }
2aa47728 691 sv_dump(target);
bf357333 692
2aa47728
NC
693 PerlIO_flush(Perl_debug_log);
694
808ad2d0 695 got = write(sock, &success, sizeof(success));
2aa47728
NC
696
697 if(got < 0) {
808ad2d0
NC
698 where = "write failed";
699 goto abort;
2aa47728 700 }
808ad2d0
NC
701 if(got < sizeof(success)) {
702 where = "short write";
703 goto abort;
2aa47728
NC
704 }
705 }
706 _exit(0);
808ad2d0
NC
707 abort:
708 {
709 int send_errno = errno;
710 unsigned char length = (unsigned char) strlen(where);
711 struct iovec failure[3] = {
712 {(void*)&send_errno, sizeof(send_errno)},
713 {&length, 1},
714 {(void*)where, length}
715 };
716 int got = writev(sock, failure, 3);
717 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
718 in the parent if we try to read from the socketpair after the
719 child has exited, even if there was data to read.
720 So sleep a bit to give the parent a fighting chance of
721 reading the data. */
722 sleep(2);
723 _exit((got == -1) ? errno : 0);
724 }
bf357333 725 /* End of child. */
2aa47728 726 }
41e4abd8 727 PL_dumper_fd = fd[0];
2aa47728
NC
728 close(fd[1]);
729 }
730#endif
731
ff0cee69
PP
732 /* We must account for everything. */
733
734 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
735 /* Do this now, because destroying ops can cause new SVs to be generated
736 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
737 PL_curcop to point to a valid op from which the filename structure
738 member is copied. */
739 PL_curcop = &PL_compiling;
3280af22 740 if (PL_main_root) {
4e380990
DM
741 /* ensure comppad/curpad to refer to main's pad */
742 if (CvPADLIST(PL_main_cv)) {
743 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
744 }
3280af22 745 op_free(PL_main_root);
5f66b61c 746 PL_main_root = NULL;
a0d0e21e 747 }
5f66b61c 748 PL_main_start = NULL;
3280af22 749 SvREFCNT_dec(PL_main_cv);
601f1833 750 PL_main_cv = NULL;
24d3c518 751 PL_dirty = TRUE;
ff0cee69 752
13621cfb
NIS
753 /* Tell PerlIO we are about to tear things apart in case
754 we have layers which are using resources that should
755 be cleaned up now.
756 */
757
758 PerlIO_destruct(aTHX);
759
3280af22 760 if (PL_sv_objcount) {
a0d0e21e
LW
761 /*
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
765 */
a0d0e21e 766 sv_clean_objs();
bf9cdc68 767 PL_sv_objcount = 0;
a0de6cf5 768 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 769 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
770 }
771
5cd24f17 772 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 773 SvREFCNT_dec(PL_warnhook);
a0714e2c 774 PL_warnhook = NULL;
3280af22 775 SvREFCNT_dec(PL_diehook);
a0714e2c 776 PL_diehook = NULL;
5cd24f17 777
4b556e6c 778 /* call exit list functions */
3280af22 779 while (PL_exitlistlen-- > 0)
acfe0abc 780 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 781
3280af22 782 Safefree(PL_exitlist);
4b556e6c 783
1c4916e5
CB
784 PL_exitlist = NULL;
785 PL_exitlistlen = 0;
786
a3e6e81e
NC
787 SvREFCNT_dec(PL_registered_mros);
788
551a8b83 789 /* jettison our possibly duplicated environment */
4b647fb0
DM
790 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
791 * so we certainly shouldn't free it here
792 */
2f42fcb0 793#ifndef PERL_MICRO
4b647fb0 794#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 795 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
796#ifdef USE_ITHREADS
797 /* only main thread can free environ[0] contents */
798 && PL_curinterp == aTHX
799#endif
800 )
801 {
551a8b83
JH
802 I32 i;
803
804 for (i = 0; environ[i]; i++)
4b420006 805 safesysfree(environ[i]);
0631ea03 806
4b420006
JH
807 /* Must use safesysfree() when working with environ. */
808 safesysfree(environ);
551a8b83
JH
809
810 environ = PL_origenviron;
811 }
812#endif
2f42fcb0 813#endif /* !PERL_MICRO */
551a8b83 814
30985c42
JH
815 if (destruct_level == 0) {
816
817 DEBUG_P(debprofdump());
818
819#if defined(PERLIO_LAYERS)
820 /* No more IO - including error messages ! */
821 PerlIO_cleanup(aTHX);
822#endif
823
824 CopFILE_free(&PL_compiling);
825 CopSTASH_free(&PL_compiling);
826
827 /* The exit() function will do everything that needs doing. */
828 return STATUS_EXIT;
829 }
830
804ffa60 831 /* reset so print() ends up where we expect */
a0714e2c 832 setdefout(NULL);
804ffa60 833
5f8cb046
DM
834#ifdef USE_ITHREADS
835 /* the syntax tree is shared between clones
836 * so op_free(PL_main_root) only ReREFCNT_dec's
837 * REGEXPs in the parent interpreter
838 * we need to manually ReREFCNT_dec for the clones
839 */
5f8cb046 840 SvREFCNT_dec(PL_regex_padav);
7d49f689 841 PL_regex_padav = NULL;
5f8cb046
DM
842 PL_regex_pad = NULL;
843#endif
844
ad64d0ec 845 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
846 PL_stashcache = NULL;
847
5f05dabc
PP
848 /* loosen bonds of global variables */
849
2f9285f8
DM
850 /* XXX can PL_parser still be non-null here? */
851 if(PL_parser && PL_parser->rsfp) {
852 (void)PerlIO_close(PL_parser->rsfp);
853 PL_parser->rsfp = NULL;
8ebc5c01
PP
854 }
855
84386e14
RGS
856 if (PL_minus_F) {
857 Safefree(PL_splitstr);
858 PL_splitstr = NULL;
859 }
860
8ebc5c01 861 /* switches */
3280af22
NIS
862 PL_minus_n = FALSE;
863 PL_minus_p = FALSE;
864 PL_minus_l = FALSE;
865 PL_minus_a = FALSE;
866 PL_minus_F = FALSE;
867 PL_doswitches = FALSE;
599cee73 868 PL_dowarn = G_WARN_OFF;
3280af22
NIS
869 PL_doextract = FALSE;
870 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
871 PL_unsafe = FALSE;
872
873 Safefree(PL_inplace);
bd61b366 874 PL_inplace = NULL;
a7cb1f99 875 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
876
877 if (PL_e_script) {
878 SvREFCNT_dec(PL_e_script);
a0714e2c 879 PL_e_script = NULL;
8ebc5c01
PP
880 }
881
bf9cdc68
RG
882 PL_perldb = 0;
883
8ebc5c01
PP
884 /* magical thingies */
885
e23d9e2f
CS
886 SvREFCNT_dec(PL_ofsgv); /* *, */
887 PL_ofsgv = NULL;
5f05dabc 888
7889fe52 889 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 890 PL_ors_sv = NULL;
8ebc5c01 891
3280af22 892 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 893 PL_rs = NULL;
dc92893f 894
d33b2eba 895 Safefree(PL_osname); /* $^O */
bd61b366 896 PL_osname = NULL;
5f05dabc 897
3280af22 898 SvREFCNT_dec(PL_statname);
a0714e2c
SS
899 PL_statname = NULL;
900 PL_statgv = NULL;
5f05dabc 901
8ebc5c01
PP
902 /* defgv, aka *_ should be taken care of elsewhere */
903
8ebc5c01 904 /* clean up after study() */
3280af22 905 SvREFCNT_dec(PL_lastscream);
a0714e2c 906 PL_lastscream = NULL;
3280af22
NIS
907 Safefree(PL_screamfirst);
908 PL_screamfirst = 0;
909 Safefree(PL_screamnext);
910 PL_screamnext = 0;
8ebc5c01 911
7d5ea4e7
GS
912 /* float buffer */
913 Safefree(PL_efloatbuf);
bd61b366 914 PL_efloatbuf = NULL;
7d5ea4e7
GS
915 PL_efloatsize = 0;
916
8ebc5c01 917 /* startup and shutdown function lists */
3280af22 918 SvREFCNT_dec(PL_beginav);
5a837c8f 919 SvREFCNT_dec(PL_beginav_save);
3280af22 920 SvREFCNT_dec(PL_endav);
7d30b5c4 921 SvREFCNT_dec(PL_checkav);
ece599bd 922 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
923 SvREFCNT_dec(PL_unitcheckav);
924 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 925 SvREFCNT_dec(PL_initav);
7d49f689
NC
926 PL_beginav = NULL;
927 PL_beginav_save = NULL;
928 PL_endav = NULL;
929 PL_checkav = NULL;
930 PL_checkav_save = NULL;
3c10abe3
AG
931 PL_unitcheckav = NULL;
932 PL_unitcheckav_save = NULL;
7d49f689 933 PL_initav = NULL;
5618dfe8 934
8ebc5c01 935 /* shortcuts just get cleared */
a0714e2c
SS
936 PL_envgv = NULL;
937 PL_incgv = NULL;
938 PL_hintgv = NULL;
939 PL_errgv = NULL;
940 PL_argvgv = NULL;
941 PL_argvoutgv = NULL;
942 PL_stdingv = NULL;
943 PL_stderrgv = NULL;
944 PL_last_in_gv = NULL;
945 PL_replgv = NULL;
946 PL_DBgv = NULL;
947 PL_DBline = NULL;
948 PL_DBsub = NULL;
949 PL_DBsingle = NULL;
950 PL_DBtrace = NULL;
951 PL_DBsignal = NULL;
601f1833 952 PL_DBcv = NULL;
7d49f689 953 PL_dbargs = NULL;
5c284bb0 954 PL_debstash = NULL;
8ebc5c01 955
7a1c5554 956 SvREFCNT_dec(PL_argvout_stack);
7d49f689 957 PL_argvout_stack = NULL;
8ebc5c01 958
5c831c24 959 SvREFCNT_dec(PL_modglobal);
5c284bb0 960 PL_modglobal = NULL;
5c831c24 961 SvREFCNT_dec(PL_preambleav);
7d49f689 962 PL_preambleav = NULL;
5c831c24 963 SvREFCNT_dec(PL_subname);
a0714e2c 964 PL_subname = NULL;
ca0c25f6 965#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 966 SvREFCNT_dec(PL_pidstatus);
5c284bb0 967 PL_pidstatus = NULL;
ca0c25f6 968#endif
5c831c24 969 SvREFCNT_dec(PL_toptarget);
a0714e2c 970 PL_toptarget = NULL;
5c831c24 971 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
972 PL_bodytarget = NULL;
973 PL_formtarget = NULL;
5c831c24 974
d33b2eba 975 /* free locale stuff */
b9582b6a 976#ifdef USE_LOCALE_COLLATE
d33b2eba 977 Safefree(PL_collation_name);
bd61b366 978 PL_collation_name = NULL;
b9582b6a 979#endif
d33b2eba 980
b9582b6a 981#ifdef USE_LOCALE_NUMERIC
d33b2eba 982 Safefree(PL_numeric_name);
bd61b366 983 PL_numeric_name = NULL;
a453c169 984 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 985 PL_numeric_radix_sv = NULL;
b9582b6a 986#endif
d33b2eba 987
5c831c24
GS
988 /* clear utf8 character classes */
989 SvREFCNT_dec(PL_utf8_alnum);
990 SvREFCNT_dec(PL_utf8_alnumc);
991 SvREFCNT_dec(PL_utf8_ascii);
992 SvREFCNT_dec(PL_utf8_alpha);
993 SvREFCNT_dec(PL_utf8_space);
994 SvREFCNT_dec(PL_utf8_cntrl);
995 SvREFCNT_dec(PL_utf8_graph);
996 SvREFCNT_dec(PL_utf8_digit);
997 SvREFCNT_dec(PL_utf8_upper);
998 SvREFCNT_dec(PL_utf8_lower);
999 SvREFCNT_dec(PL_utf8_print);
1000 SvREFCNT_dec(PL_utf8_punct);
1001 SvREFCNT_dec(PL_utf8_xdigit);
1002 SvREFCNT_dec(PL_utf8_mark);
1003 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1004 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1005 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1006 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1007 SvREFCNT_dec(PL_utf8_idstart);
1008 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1009 PL_utf8_alnum = NULL;
1010 PL_utf8_alnumc = NULL;
1011 PL_utf8_ascii = NULL;
1012 PL_utf8_alpha = NULL;
1013 PL_utf8_space = NULL;
1014 PL_utf8_cntrl = NULL;
1015 PL_utf8_graph = NULL;
1016 PL_utf8_digit = NULL;
1017 PL_utf8_upper = NULL;
1018 PL_utf8_lower = NULL;
1019 PL_utf8_print = NULL;
1020 PL_utf8_punct = NULL;
1021 PL_utf8_xdigit = NULL;
1022 PL_utf8_mark = NULL;
1023 PL_utf8_toupper = NULL;
1024 PL_utf8_totitle = NULL;
1025 PL_utf8_tolower = NULL;
1026 PL_utf8_tofold = NULL;
1027 PL_utf8_idstart = NULL;
1028 PL_utf8_idcont = NULL;
5c831c24 1029
971a9dd3 1030 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1031 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1032 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1033 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1034 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1035 CopFILE_free(&PL_compiling);
1036 CopSTASH_free(&PL_compiling);
5c831c24 1037
a0d0e21e 1038 /* Prepare to destruct main symbol table. */
5f05dabc 1039
3280af22
NIS
1040 hv = PL_defstash;
1041 PL_defstash = 0;
a0d0e21e 1042 SvREFCNT_dec(hv);
5c831c24 1043 SvREFCNT_dec(PL_curstname);
a0714e2c 1044 PL_curstname = NULL;
a0d0e21e 1045
5a844595
GS
1046 /* clear queued errors */
1047 SvREFCNT_dec(PL_errors);
a0714e2c 1048 PL_errors = NULL;
5a844595 1049
dd69841b
BB
1050 SvREFCNT_dec(PL_isarev);
1051
a0d0e21e 1052 FREETMPS;
0453d815 1053 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1054 if (PL_scopestack_ix != 0)
9014280d 1055 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1056 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1057 (long)PL_scopestack_ix);
1058 if (PL_savestack_ix != 0)
9014280d 1059 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1060 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1061 (long)PL_savestack_ix);
1062 if (PL_tmps_floor != -1)
9014280d 1063 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1064 (long)PL_tmps_floor + 1);
a0d0e21e 1065 if (cxstack_ix != -1)
9014280d 1066 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1067 (long)cxstack_ix + 1);
a0d0e21e 1068 }
8990e307
LW
1069
1070 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1071
1072 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1073 while (sv_clean_all() > 2)
5226ed68
JH
1074 ;
1075
d4777f27
GS
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1078 PL_fdpid = NULL;
d33b2eba 1079
6c644e78
GS
1080#ifdef HAVE_INTERP_INTERN
1081 sys_intern_clear();
1082#endif
1083
6e72f9df
PP
1084 /* Destruct the global string table. */
1085 {
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
80459961
NC
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
6e72f9df 1091 */
80459961
NC
1092 I32 riter = 0;
1093 const I32 max = HvMAX(PL_strtab);
c4420975 1094 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1095 HE *hent = array[0];
1096
6e72f9df 1097 for (;;) {
0453d815 1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1099 HE * const next = HeNEXT(hent);
9014280d 1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1103 Safefree(hent);
1104 hent = next;
6e72f9df
PP
1105 }
1106 if (!hent) {
1107 if (++riter > max)
1108 break;
1109 hent = array[riter];
1110 }
1111 }
80459961
NC
1112
1113 Safefree(array);
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
1116 HvFILL(PL_strtab) = 0;
6e72f9df 1117 }
3280af22 1118 SvREFCNT_dec(PL_strtab);
6e72f9df 1119
e652bb2f 1120#ifdef USE_ITHREADS
c21d1a0f 1121 /* free the pointer tables used for cloning */
a0739874 1122 ptr_table_free(PL_ptr_table);
bf9cdc68 1123 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1124#endif
a0739874 1125
d33b2eba
GS
1126 /* free special SVs */
1127
1128 SvREFCNT(&PL_sv_yes) = 0;
1129 sv_clear(&PL_sv_yes);
1130 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1131 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1132
1133 SvREFCNT(&PL_sv_no) = 0;
1134 sv_clear(&PL_sv_no);
1135 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1136 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1137
9f375a43
DM
1138 {
1139 int i;
1140 for (i=0; i<=2; i++) {
1141 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1142 sv_clear(PERL_DEBUG_PAD(i));
1143 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1144 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1145 }
1146 }
1147
0453d815 1148 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1149 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1150
eba0f806
DM
1151#ifdef DEBUG_LEAKING_SCALARS
1152 if (PL_sv_count != 0) {
1153 SV* sva;
1154 SV* sv;
1155 register SV* svend;
1156
ad64d0ec 1157 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1158 svend = &sva[SvREFCNT(sva)];
1159 for (sv = sva + 1; sv < svend; ++sv) {
1160 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1161 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1162 " flags=0x%"UVxf
fd0854ff
DM
1163 " refcnt=%"UVuf pTHX__FORMAT "\n"
1164 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1166 pTHX__VALUE,
fd0854ff
DM
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
1172 sv->sv_debug_cloned ? " (cloned)" : ""
1173 );
2aa47728 1174#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1175 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1176#endif
eba0f806
DM
1177 }
1178 }
1179 }
1180 }
2aa47728
NC
1181#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1182 {
1183 int status;
1184 fd_set rset;
1185 /* Wait for up to 4 seconds for child to terminate.
1186 This seems to be the least effort way of timing out on reaping
1187 its exit status. */
1188 struct timeval waitfor = {4, 0};
41e4abd8 1189 int sock = PL_dumper_fd;
2aa47728
NC
1190
1191 shutdown(sock, 1);
1192 FD_ZERO(&rset);
1193 FD_SET(sock, &rset);
1194 select(sock + 1, &rset, NULL, NULL, &waitfor);
1195 waitpid(child, &status, WNOHANG);
1196 close(sock);
1197 }
1198#endif
eba0f806 1199#endif
77abb4c6
NC
1200#ifdef DEBUG_LEAKING_SCALARS_ABORT
1201 if (PL_sv_count)
1202 abort();
1203#endif
bf9cdc68 1204 PL_sv_count = 0;
eba0f806 1205
f1fac472
NC
1206#ifdef PERL_DEBUG_READONLY_OPS
1207 free(PL_slabs);
1208 PL_slabs = NULL;
1209 PL_slab_count = 0;
1210#endif
eba0f806 1211
56a2bab7 1212#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1213 /* No more IO - including error messages ! */
1214 PerlIO_cleanup(aTHX);
1215#endif
1216
9f4bd222 1217 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1218 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1219 for no arg - and will try and SvREFCNT_dec it.
1220 */
1221 SvREFCNT(&PL_sv_undef) = 0;
1222 SvREADONLY_off(&PL_sv_undef);
1223
3280af22 1224 Safefree(PL_origfilename);
bd61b366 1225 PL_origfilename = NULL;
3280af22 1226 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1227 PL_reg_start_tmp = (char**)NULL;
1228 PL_reg_start_tmpl = 0;
43c5f42d 1229 Safefree(PL_reg_curpm);
82ba1be6 1230 Safefree(PL_reg_poscache);
dd28f7bb 1231 free_tied_hv_pool();
3280af22 1232 Safefree(PL_op_mask);
cf36064f 1233 Safefree(PL_psig_ptr);
bf9cdc68 1234 PL_psig_ptr = (SV**)NULL;
cf36064f 1235 Safefree(PL_psig_name);
bf9cdc68 1236 PL_psig_name = (SV**)NULL;
2c2666fc 1237 Safefree(PL_bitcount);
bd61b366 1238 PL_bitcount = NULL;
ce08f86c 1239 Safefree(PL_psig_pend);
bf9cdc68 1240 PL_psig_pend = (int*)NULL;
a0714e2c 1241 PL_formfeed = NULL;
6e72f9df 1242 nuke_stacks();
bf9cdc68
RG
1243 PL_tainting = FALSE;
1244 PL_taint_warn = FALSE;
3280af22 1245 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1246 PL_debug = 0;
ac27b0f5 1247
a0d0e21e 1248 DEBUG_P(debprofdump());
d33b2eba 1249
e5dd39fc 1250#ifdef USE_REENTRANT_API
10bc17b6 1251 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1252#endif
1253
612f20c3
GS
1254 sv_free_arenas();
1255
5d9a96ca
DM
1256 while (PL_regmatch_slab) {
1257 regmatch_slab *s = PL_regmatch_slab;
1258 PL_regmatch_slab = PL_regmatch_slab->next;
1259 Safefree(s);
1260 }
1261
fc36a67e
PP
1262 /* As the absolutely last thing, free the non-arena SV for mess() */
1263
3280af22 1264 if (PL_mess_sv) {
f350b448
NC
1265 /* we know that type == SVt_PVMG */
1266
9c63abab 1267 /* it could have accumulated taint magic */
f350b448
NC
1268 MAGIC* mg;
1269 MAGIC* moremagic;
1270 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1271 moremagic = mg->mg_moremagic;
1272 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1273 && mg->mg_len >= 0)
1274 Safefree(mg->mg_ptr);
1275 Safefree(mg);
9c63abab 1276 }
f350b448 1277
fc36a67e 1278 /* we know that type >= SVt_PV */
8bd4d4c5 1279 SvPV_free(PL_mess_sv);
3280af22
NIS
1280 Safefree(SvANY(PL_mess_sv));
1281 Safefree(PL_mess_sv);
a0714e2c 1282 PL_mess_sv = NULL;
fc36a67e 1283 }
37038d91 1284 return STATUS_EXIT;
79072805
LW
1285}
1286
954c1994
GS
1287/*
1288=for apidoc perl_free
1289
1290Releases a Perl interpreter. See L<perlembed>.
1291
1292=cut
1293*/
1294
79072805 1295void
0cb96387 1296perl_free(pTHXx)
79072805 1297{
5174512c
NC
1298 dVAR;
1299
7918f24d
NC
1300 PERL_ARGS_ASSERT_PERL_FREE;
1301
c301d606
DM
1302 if (PL_veto_cleanup)
1303 return;
1304
7cb608b5 1305#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1306 {
1307 /*
1308 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1309 * value as we're probably hunting memory leaks then
1310 */
1311 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1312 if (!s || atoi(s) == 0) {
4fd0a9b8 1313 const U32 old_debug = PL_debug;
55ef9aae
MHM
1314 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1315 thread at thread exit. */
4fd0a9b8
NC
1316 if (DEBUG_m_TEST) {
1317 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1318 "free this thread's memory\n");
1319 PL_debug &= ~ DEBUG_m_FLAG;
1320 }
55ef9aae
MHM
1321 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1322 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1323 PL_debug = old_debug;
55ef9aae
MHM
1324 }
1325 }
7cb608b5
NC
1326#endif
1327
acfe0abc 1328#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1329# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1330 {
acfe0abc 1331# ifdef NETWARE
7af12a34 1332 void *host = nw_internal_host;
acfe0abc 1333# else
7af12a34 1334 void *host = w32_internal_host;
acfe0abc 1335# endif
7af12a34 1336 PerlMem_free(aTHXx);
acfe0abc 1337# ifdef NETWARE
7af12a34 1338 nw_delete_internal_host(host);
acfe0abc 1339# else
7af12a34 1340 win32_delete_internal_host(host);
acfe0abc 1341# endif
7af12a34 1342 }
1c0ca838
GS
1343# else
1344 PerlMem_free(aTHXx);
1345# endif
acfe0abc
GS
1346#else
1347 PerlMem_free(aTHXx);
76e3520e 1348#endif
79072805
LW
1349}
1350
b7f7fff6 1351#if defined(USE_ITHREADS)
aebd1ac7
GA
1352/* provide destructors to clean up the thread key when libperl is unloaded */
1353#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1354
826955bd 1355#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1356#pragma fini "perl_fini"
666ad1ec
GA
1357#elif defined(__sun) && !defined(__GNUC__)
1358#pragma fini (perl_fini)
aebd1ac7
GA
1359#endif
1360
0dbb1585
AL
1361static void
1362#if defined(__GNUC__)
1363__attribute__((destructor))
aebd1ac7 1364#endif
de009b76 1365perl_fini(void)
aebd1ac7 1366{
27da23d5 1367 dVAR;
c301d606 1368 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1369 FREE_THREAD_KEY;
1370}
1371
1372#endif /* WIN32 */
1373#endif /* THREADS */
1374
4b556e6c 1375void
864dbfa3 1376Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1377{
97aff369 1378 dVAR;
3280af22
NIS
1379 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1380 PL_exitlist[PL_exitlistlen].fn = fn;
1381 PL_exitlist[PL_exitlistlen].ptr = ptr;
1382 ++PL_exitlistlen;
4b556e6c
JD
1383}
1384
56cf6df8
RGS
1385#ifdef HAS_PROCSELFEXE
1386/* This is a function so that we don't hold on to MAXPATHLEN
1387 bytes of stack longer than necessary
1388 */
1389STATIC void
e1ec3a88 1390S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1391{
1392 char buf[MAXPATHLEN];
1393 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1394
1395 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1396 includes a spurious NUL which will cause $^X to fail in system
1397 or backticks (this will prevent extensions from being built and
1398 many tests from working). readlink is not meant to add a NUL.
1399 Normal readlink works fine.
1400 */
1401 if (len > 0 && buf[len-1] == '\0') {
1402 len--;
1403 }
1404
1405 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1406 returning the text "unknown" from the readlink rather than the path
1407 to the executable (or returning an error from the readlink). Any valid
1408 path has a '/' in it somewhere, so use that to validate the result.
1409 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1410 */
1411 if (len > 0 && memchr(buf, '/', len)) {
1412 sv_setpvn(sv,buf,len);
1413 }
1414 else {
1415 sv_setpv(sv,arg0);
1416 }
1417}
1418#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1419
1420STATIC void
1421S_set_caret_X(pTHX) {
97aff369 1422 dVAR;
fafc274c 1423 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1424 if (tmpgv) {
1425#ifdef HAS_PROCSELFEXE
1426 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1427#else
1428#ifdef OS2
c69033f2 1429 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1430#else
c69033f2 1431 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1432#endif
1433#endif
1434 }
1435}
1436
954c1994
GS
1437/*
1438=for apidoc perl_parse
1439
1440Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1441
1442=cut
1443*/
1444
79072805 1445int
0cb96387 1446perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1447{
27da23d5 1448 dVAR;
6224f72b 1449 I32 oldscope;
6224f72b 1450 int ret;
db36c5a1 1451 dJMPENV;
8d063cd8 1452
7918f24d
NC
1453 PERL_ARGS_ASSERT_PERL_PARSE;
1454#ifndef MULTIPLICITY
ed6c66dd 1455 PERL_UNUSED_ARG(my_perl);
7918f24d 1456#endif
9d4ba2ae 1457
b0891165
JH
1458#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1459 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1460 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1461 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1462 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1463 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1464 if (!PL_rehash_seed_set)
1465 PL_rehash_seed = get_hash_seed();
b0891165 1466 {
9d4ba2ae 1467 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1468
1b6737cc
AL
1469 if (s && (atoi(s) == 1))
1470 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1471 }
1472#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1473
3280af22 1474 PL_origargc = argc;
e2975953 1475 PL_origargv = argv;
a0d0e21e 1476
a2722ac9
GA
1477 if (PL_origalen != 0) {
1478 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1479 }
1480 else {
3cb9023d
JH
1481 /* Set PL_origalen be the sum of the contiguous argv[]
1482 * elements plus the size of the env in case that it is
e9137a8e 1483 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1484 * as the maximum modifiable length of $0. In the worst case
1485 * the area we are able to modify is limited to the size of
43c32782 1486 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1487 * --jhi */
e1ec3a88 1488 const char *s = NULL;
54bfe034 1489 int i;
1b6737cc 1490 const UV mask =
7d8e7db3 1491 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1492 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1493 const UV aligned =
43c32782
JH
1494 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1495
1496 /* See if all the arguments are contiguous in memory. Note
1497 * that 'contiguous' is a loose term because some platforms
1498 * align the argv[] and the envp[]. If the arguments look
1499 * like non-aligned, assume that they are 'strictly' or
1500 * 'traditionally' contiguous. If the arguments look like
1501 * aligned, we just check that they are within aligned
1502 * PTRSIZE bytes. As long as no system has something bizarre
1503 * like the argv[] interleaved with some other data, we are
1504 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1505 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1506 while (*s) s++;
1507 for (i = 1; i < PL_origargc; i++) {
1508 if ((PL_origargv[i] == s + 1
43c32782 1509#ifdef OS2
c8941eeb 1510 || PL_origargv[i] == s + 2
43c32782 1511#endif
c8941eeb
JH
1512 )
1513 ||
1514 (aligned &&
1515 (PL_origargv[i] > s &&
1516 PL_origargv[i] <=
1517 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1518 )
1519 {
1520 s = PL_origargv[i];
1521 while (*s) s++;
1522 }
1523 else
1524 break;
54bfe034 1525 }
54bfe034 1526 }
a4a109c2
JD
1527
1528#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1529 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1530 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1531 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1532 ||
1533 (aligned &&
1534 (PL_origenviron[0] > s &&
1535 PL_origenviron[0] <=
1536 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1537 )
1538 {
9d419b5f 1539#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1540 s = PL_origenviron[0];
1541 while (*s) s++;
1542#endif
bd61b366 1543 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1544 /* Force copy of environment. */
1545 for (i = 1; PL_origenviron[i]; i++) {
1546 if (PL_origenviron[i] == s + 1
1547 ||
1548 (aligned &&
1549 (PL_origenviron[i] > s &&
1550 PL_origenviron[i] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1552 )
1553 {
1554 s = PL_origenviron[i];
1555 while (*s) s++;
1556 }
1557 else
1558 break;
54bfe034 1559 }
43c32782 1560 }
54bfe034 1561 }
a4a109c2
JD
1562#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1563
2d2af554 1564 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1565 }
1566
3280af22 1567 if (PL_do_undump) {
a0d0e21e
LW
1568
1569 /* Come here if running an undumped a.out. */
1570
3280af22
NIS
1571 PL_origfilename = savepv(argv[0]);
1572 PL_do_undump = FALSE;
a0d0e21e 1573 cxstack_ix = -1; /* start label stack again */
748a9306 1574 init_ids();
b7975bdd
NC
1575 assert (!PL_tainted);
1576 TAINT;
1577 S_set_caret_X(aTHX);
1578 TAINT_NOT;
a0d0e21e
LW
1579 init_postdump_symbols(argc,argv,env);
1580 return 0;
1581 }
1582
3280af22 1583 if (PL_main_root) {
3280af22 1584 op_free(PL_main_root);
5f66b61c 1585 PL_main_root = NULL;
ff0cee69 1586 }
5f66b61c 1587 PL_main_start = NULL;
3280af22 1588 SvREFCNT_dec(PL_main_cv);
601f1833 1589 PL_main_cv = NULL;
79072805 1590
3280af22
NIS
1591 time(&PL_basetime);
1592 oldscope = PL_scopestack_ix;
599cee73 1593 PL_dowarn = G_WARN_OFF;
f86702cc 1594
14dd3ad8 1595 JMPENV_PUSH(ret);
6224f72b 1596 switch (ret) {
312caa8e 1597 case 0:
14dd3ad8 1598 parse_body(env,xsinit);
3c10abe3
AG
1599 if (PL_unitcheckav)
1600 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1601 if (PL_checkav)
1602 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1603 ret = 0;
1604 break;
6224f72b
GS
1605 case 1:
1606 STATUS_ALL_FAILURE;
1607 /* FALL THROUGH */
1608 case 2:
1609 /* my_exit() was called */
3280af22 1610 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1611 LEAVE;
1612 FREETMPS;
3280af22 1613 PL_curstash = PL_defstash;
3c10abe3
AG
1614 if (PL_unitcheckav)
1615 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1616 if (PL_checkav)
1617 call_list(oldscope, PL_checkav);
37038d91 1618 ret = STATUS_EXIT;
14dd3ad8 1619 break;
6224f72b 1620 case 3:
bf49b057 1621 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1622 ret = 1;
1623 break;
6224f72b 1624 }
14dd3ad8
GS
1625 JMPENV_POP;
1626 return ret;
1627}
1628
312caa8e 1629STATIC void *
14dd3ad8 1630S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1631{
27da23d5 1632 dVAR;
2f9285f8 1633 PerlIO *rsfp;
312caa8e 1634 int argc = PL_origargc;
8f42b153 1635 char **argv = PL_origargv;
e1ec3a88 1636 const char *scriptname = NULL;
312caa8e 1637 VOL bool dosearch = FALSE;
312caa8e 1638 register SV *sv;
c7030b81 1639 register char c;
bd61b366 1640 const char *cddir = NULL;
ab019eaa 1641#ifdef USE_SITECUSTOMIZE
20ef40cf 1642 bool minus_f = FALSE;
ab019eaa 1643#endif
009d90df 1644 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1645 bool add_read_e_script = FALSE;
009d90df
DM
1646
1647 SvGROW(linestr_sv, 80);
76f68e9b 1648 sv_setpvs(linestr_sv,"");
312caa8e 1649
396482e1 1650 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1651 SAVEFREESV(sv);
1652 init_main_stash();
54310121 1653
c7030b81
NC
1654 {
1655 const char *s;
6224f72b
GS
1656 for (argc--,argv++; argc > 0; argc--,argv++) {
1657 if (argv[0][0] != '-' || !argv[0][1])
1658 break;
6224f72b
GS
1659 s = argv[0]+1;
1660 reswitch:
47f56822 1661 switch ((c = *s)) {
729a02f2 1662 case 'C':
1d5472a9
GS
1663#ifndef PERL_STRICT_CR
1664 case '\r':
1665#endif
6224f72b
GS
1666 case ' ':
1667 case '0':
1668 case 'F':
1669 case 'a':
1670 case 'c':
1671 case 'd':
1672 case 'D':
1673 case 'h':
1674 case 'i':
1675 case 'l':
1676 case 'M':
1677 case 'm':
1678 case 'n':
1679 case 'p':
1680 case 's':
1681 case 'u':
1682 case 'U':
1683 case 'v':
599cee73
PM
1684 case 'W':
1685 case 'X':
6224f72b 1686 case 'w':
97bd5664 1687 if ((s = moreswitches(s)))
6224f72b
GS
1688 goto reswitch;
1689 break;
33b78306 1690
1dbad523 1691 case 't':
22f7c9c9 1692 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1693 if( !PL_tainting ) {
1694 PL_taint_warn = TRUE;
1695 PL_tainting = TRUE;
1696 }
1697 s++;
1698 goto reswitch;
6224f72b 1699 case 'T':
22f7c9c9 1700 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1701 PL_tainting = TRUE;
317ea90d 1702 PL_taint_warn = FALSE;
6224f72b
GS
1703 s++;
1704 goto reswitch;
f86702cc 1705
bc9b29db
RH
1706 case 'E':
1707 PL_minus_E = TRUE;
1708 /* FALL THROUGH */
6224f72b 1709 case 'e':
bf4acbe4
GS
1710#ifdef MACOS_TRADITIONAL
1711 /* ignore -e for Dev:Pseudo argument */
1712 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1713 break;
bf4acbe4 1714#endif
f20b2998 1715 forbid_setid('e', FALSE);
3280af22 1716 if (!PL_e_script) {
396482e1 1717 PL_e_script = newSVpvs("");
5486870f 1718 add_read_e_script = TRUE;
6224f72b
GS
1719 }
1720 if (*++s)
3280af22 1721 sv_catpv(PL_e_script, s);
6224f72b 1722 else if (argv[1]) {
3280af22 1723 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1724 argc--,argv++;
1725 }
1726 else
47f56822 1727 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1728 sv_catpvs(PL_e_script, "\n");
6224f72b 1729 break;
afe37c7d 1730
20ef40cf 1731 case 'f':
f5542d3a 1732#ifdef USE_SITECUSTOMIZE
20ef40cf 1733 minus_f = TRUE;
f5542d3a 1734#endif
20ef40cf
GA
1735 s++;
1736 goto reswitch;
1737
6224f72b 1738 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1739 forbid_setid('I', FALSE);
bd61b366 1740 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1741 argc--,argv++;
1742 }
6224f72b 1743 if (s && *s) {
0df16ed7 1744 STRLEN len = strlen(s);
aec46f14 1745 const char * const p = savepvn(s, len);
20189146 1746 incpush(p, TRUE, TRUE, FALSE, FALSE, FALSE);
396482e1 1747 sv_catpvs(sv, "-I");
0df16ed7 1748 sv_catpvn(sv, p, len);
396482e1 1749 sv_catpvs(sv, " ");
6224f72b 1750 Safefree(p);
0df16ed7
GS
1751 }
1752 else
a67e862a 1753 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1754 break;
6224f72b 1755 case 'S':
f20b2998 1756 forbid_setid('S', FALSE);
6224f72b
GS
1757 dosearch = TRUE;
1758 s++;
1759 goto reswitch;
1760 case 'V':
7edfd0ef
NC
1761 {
1762 SV *opts_prog;
1763
29a861e7 1764 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef 1765 if (*++s != ':') {
389d73ad
NC
1766 /* Can't do newSVpvs() as that would involve pre-processor
1767 condititionals inside a macro expansion. */
1768 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
6224f72b 1769# ifdef DEBUGGING
e2e4dbf1 1770 " DEBUGGING"
6224f72b 1771# endif
3bcf5ed8
SP
1772# ifdef NO_MATHOMS
1773 " NO_MATHOMS"
1774# endif
85e1fcb9 1775# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1776 " PERL_DONT_CREATE_GVSV"
85e1fcb9 1777# endif
85e1fcb9 1778# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1779 " PERL_MALLOC_WRAP"
85e1fcb9 1780# endif
4724db38
NC
1781# ifdef PERL_MEM_LOG
1782 " PERL_MEM_LOG"
1783# endif
1784# ifdef PERL_MEM_LOG_ENV
1785 " PERL_MEM_LOG_ENV"
1786# endif
1787# ifdef PERL_MEM_LOG_ENV_FD
1788 " PERL_MEM_LOG_ENV_FD"
1789# endif
1790# ifdef PERL_MEM_LOG_STDERR
1791 " PERL_MEM_LOG_STDERR"
1792# endif
1793# ifdef PERL_MEM_LOG_TIMESTAMP
1794 " PERL_MEM_LOG_TIMESTAMP"
1795# endif
1be1b388
MB
1796# ifdef PERL_USE_DEVEL
1797 " PERL_USE_DEVEL"
1798# endif
417cd4a8
SP
1799# ifdef PERL_USE_SAFE_PUTENV
1800 " PERL_USE_SAFE_PUTENV"
1801# endif
20ef40cf 1802# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1803 " USE_SITECUSTOMIZE"
20ef40cf 1804# endif
e187df3b
NC
1805# ifdef USE_FAST_STDIO
1806 " USE_FAST_STDIO"
1807# endif
389d73ad 1808 , 0);
efcaa95b 1809
b75885fd 1810 sv_catpv(opts_prog, PL_bincompat_options);
389d73ad
NC
1811 /* Terminate the qw(, and then wrap at 76 columns. */
1812 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1813#ifdef VMS
1814 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1815#else
1816 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1817#endif
389d73ad 1818 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
b363f7ed 1819
6224f72b 1820#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1821 if (LOCAL_PATCH_COUNT > 0) {
1822 int i;
396482e1 1823 sv_catpvs(opts_prog,
7edfd0ef
NC
1824 "\" Locally applied patches:\\n\",");
1825 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1826 if (PL_localpatches[i])
46807d8e
YO
1827 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1828 0, PL_localpatches[i], 0);
7edfd0ef 1829 }
6224f72b 1830 }
6224f72b 1831#endif
7edfd0ef 1832 Perl_sv_catpvf(aTHX_ opts_prog,
758ce194 1833 "\" Built under %s\\n",OSNAME);
6224f72b
GS
1834#ifdef __DATE__
1835# ifdef __TIME__
895aa832
NC
1836 sv_catpvs(opts_prog,
1837 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
6224f72b 1838# else
895aa832 1839 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
6224f72b
GS
1840# endif
1841#endif
396482e1 1842 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1843 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1844 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1845#ifdef __CYGWIN__
396482e1 1846 sv_catpvs(opts_prog,
7edfd0ef 1847 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1848#endif
396482e1 1849 sv_catpvs(opts_prog,
7edfd0ef
NC
1850 "print \" \\%ENV:\\n @env\\n\" if @env;"
1851 "print \" \\@INC:\\n @INC\\n\";");
1852 }
1853 else {
1854 ++s;
1855 opts_prog = Perl_newSVpvf(aTHX_
1856 "Config::config_vars(qw%c%s%c)",
1857 0, s, 0);
1858 s += strlen(s);
1859 }
1860 av_push(PL_preambleav, opts_prog);
1861 /* don't look for script or read stdin */
1862 scriptname = BIT_BUCKET;
1863 goto reswitch;
6224f72b 1864 }
6224f72b 1865 case 'x':
3280af22 1866 PL_doextract = TRUE;
6224f72b 1867 s++;
304334da 1868 if (*s)
f4c556ac 1869 cddir = s;
6224f72b
GS
1870 break;
1871 case 0:
1872 break;
1873 case '-':
1874 if (!*++s || isSPACE(*s)) {
1875 argc--,argv++;
1876 goto switch_end;
1877 }
1878 /* catch use of gnu style long options */
1879 if (strEQ(s, "version")) {
dd374669 1880 s = (char *)"v";
6224f72b
GS
1881 goto reswitch;
1882 }
1883 if (strEQ(s, "help")) {
dd374669 1884 s = (char *)"h";
6224f72b
GS
1885 goto reswitch;
1886 }
1887 s--;
1888 /* FALL THROUGH */
1889 default:
cea2e8a9 1890 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1891 }
1892 }
c7030b81
NC
1893 }
1894
6224f72b 1895 switch_end:
54310121 1896
c7030b81
NC
1897 {
1898 char *s;
1899
f675dbe5
CB
1900 if (
1901#ifndef SECURE_INTERNAL_GETENV
1902 !PL_tainting &&
1903#endif
cf756827 1904 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1905 {
74288ac8
GS
1906 while (isSPACE(*s))
1907 s++;
317ea90d 1908 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1909 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1910 PL_tainting = TRUE;
317ea90d
MS
1911 PL_taint_warn = FALSE;
1912 }
74288ac8 1913 else {
bd61b366 1914 char *popt_copy = NULL;
74288ac8 1915 while (s && *s) {
54913509 1916 const char *d;
74288ac8
GS
1917 while (isSPACE(*s))
1918 s++;
1919 if (*s == '-') {
1920 s++;
1921 if (isSPACE(*s))
1922 continue;
1923 }
4ea8f8fb 1924 d = s;
74288ac8
GS
1925 if (!*s)
1926 break;
f0d36289 1927 if (!strchr("CDIMUdmtw", *s))
cea2e8a9 1928 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1929 while (++s && *s) {
1930 if (isSPACE(*s)) {
cf756827 1931 if (!popt_copy) {
bfa6c418
NC
1932 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1933 s = popt_copy + (s - d);
1934 d = popt_copy;
cf756827 1935 }
4ea8f8fb
MS
1936 *s++ = '\0';
1937 break;
1938 }
1939 }
1c4db469 1940 if (*d == 't') {
317ea90d
MS
1941 if( !PL_tainting ) {
1942 PL_taint_warn = TRUE;
1943 PL_tainting = TRUE;
1944 }
1c4db469 1945 } else {
97bd5664 1946 moreswitches(d);
1c4db469 1947 }
6224f72b 1948 }
6224f72b
GS
1949 }
1950 }
c7030b81 1951 }
a0d0e21e 1952
20ef40cf
GA
1953#ifdef USE_SITECUSTOMIZE
1954 if (!minus_f) {
29a861e7
NC
1955 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1956 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
1957 }
1958#endif
1959
6224f72b
GS
1960 if (!scriptname)
1961 scriptname = argv[0];
3280af22 1962 if (PL_e_script) {
6224f72b
GS
1963 argc++,argv--;
1964 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1965 }
bd61b366 1966 else if (scriptname == NULL) {
6224f72b
GS
1967#ifdef MSDOS
1968 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1969 moreswitches("h");
6224f72b
GS
1970#endif
1971 scriptname = "-";
1972 }
1973
b7975bdd
NC
1974 /* Set $^X early so that it can be used for relocatable paths in @INC */
1975 assert (!PL_tainted);
1976 TAINT;
1977 S_set_caret_X(aTHX);
1978 TAINT_NOT;
6224f72b
GS
1979 init_perllib();
1980
a52eba0e 1981 {
f20b2998 1982 bool suidscript = FALSE;
829372d3 1983
cc69b689 1984 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1985
2f9285f8 1986 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1987 linestr_sv, rsfp);
6224f72b 1988
64ca3a65 1989#ifndef PERL_MICRO
a52eba0e
NC
1990# if defined(SIGCHLD) || defined(SIGCLD)
1991 {
1992# ifndef SIGCHLD
1993# define SIGCHLD SIGCLD
1994# endif
1995 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1996 if (sigstate == (Sighandler_t) SIG_IGN) {
1997 if (ckWARN(WARN_SIGNAL))
1998 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
1999 "Can't ignore signal CHLD, forcing to default");
2000 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2001 }
0b5b802d 2002 }
a52eba0e 2003# endif
64ca3a65 2004#endif
0b5b802d 2005
a52eba0e 2006 if (PL_doextract
bf4acbe4 2007#ifdef MACOS_TRADITIONAL
a52eba0e 2008 || gMacPerl_AlwaysExtract
bf4acbe4 2009#endif
a52eba0e 2010 ) {
faef540c 2011
f20b2998 2012 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2013 setuid scripts. */
2014 forbid_setid('x', suidscript);
f20b2998 2015 /* Hence you can't get here if suidscript is true */
faef540c 2016
2f9285f8 2017 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2018 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2019 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2020 }
f4c556ac 2021 }
6224f72b 2022
ea726b52 2023 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2024 CvUNIQUE_on(PL_compcv);
2025
dd2155a4 2026 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2027
dd69841b
BB
2028 PL_isarev = newHV();
2029
0c4f7ff0 2030 boot_core_PerlIO();
6224f72b 2031 boot_core_UNIVERSAL();
09bef843 2032 boot_core_xsutils();
e1a479c5 2033 boot_core_mro();
6224f72b
GS
2034
2035 if (xsinit)
acfe0abc 2036 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2037#ifndef PERL_MICRO
d0d72822 2038#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2039 init_os_extras();
6224f72b 2040#endif
64ca3a65 2041#endif
6224f72b 2042
29209bc5 2043#ifdef USE_SOCKS
1b9c9cf5
DH
2044# ifdef HAS_SOCKS5_INIT
2045 socks5_init(argv[0]);
2046# else
29209bc5 2047 SOCKSinit(argv[0]);
1b9c9cf5 2048# endif
ac27b0f5 2049#endif
29209bc5 2050
6224f72b
GS
2051 init_predump_symbols();
2052 /* init_postdump_symbols not currently designed to be called */
2053 /* more than once (ENV isn't cleared first, for example) */
2054 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2055 if (!PL_do_undump)
6224f72b
GS
2056 init_postdump_symbols(argc,argv,env);
2057
27da23d5
JH
2058 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2059 * or explicitly in some platforms.
085a54d9 2060 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2061 * look like the user wants to use UTF-8. */
a0fd4948 2062#if defined(__SYMBIAN32__)
27da23d5
JH
2063 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2064#endif
06e66572
JH
2065 if (PL_unicode) {
2066 /* Requires init_predump_symbols(). */
a05d7ebb 2067 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2068 IO* io;
2069 PerlIO* fp;
2070 SV* sv;
2071
a05d7ebb 2072 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2073 * and the default open disciplines. */
a05d7ebb
JH
2074 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2075 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2076 (fp = IoIFP(io)))
2077 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2078 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2079 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2080 (fp = IoOFP(io)))
2081 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2082 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2083 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2084 (fp = IoOFP(io)))
2085 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2086 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2087 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2088 SVt_PV)))) {
a05d7ebb
JH
2089 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2090 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2091 if (in) {
2092 if (out)
76f68e9b 2093 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2094 else
76f68e9b 2095 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2096 }
2097 else if (out)
76f68e9b 2098 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2099 SvSETMAGIC(sv);
2100 }
b310b053
JH
2101 }
2102 }
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);
bf4acbe4 2151#ifdef MACOS_TRADITIONAL
13765c85 2152 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
bf4acbe4
GS
2153 if (PL_minus_c)
2154 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2155 else {
2156 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2157 MacPerl_MPWFileName(PL_origfilename));
2158 }
2159 }
2160#else
13765c85 2161 if (yyparse() || PL_parser->error_count) {
3280af22 2162 if (PL_minus_c)
cea2e8a9 2163 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2164 else {
cea2e8a9 2165 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2166 PL_origfilename);
6224f72b
GS
2167 }
2168 }
bf4acbe4 2169#endif
57843af0 2170 CopLINE_set(PL_curcop, 0);
3280af22 2171 PL_curstash = PL_defstash;
3280af22
NIS
2172 if (PL_e_script) {
2173 SvREFCNT_dec(PL_e_script);
a0714e2c 2174 PL_e_script = NULL;
6224f72b
GS
2175 }
2176
3280af22 2177 if (PL_do_undump)
6224f72b
GS
2178 my_unexec();
2179
57843af0
GS
2180 if (isWARN_ONCE) {
2181 SAVECOPFILE(PL_curcop);
2182 SAVECOPLINE(PL_curcop);
3280af22 2183 gv_check(PL_defstash);
57843af0 2184 }
6224f72b
GS
2185
2186 LEAVE;
2187 FREETMPS;
2188
2189#ifdef MYMALLOC
f6a607bc
RGS
2190 {
2191 const char *s;
6224f72b
GS
2192 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2193 dump_mstats("after compilation:");
f6a607bc 2194 }
6224f72b
GS
2195#endif
2196
2197 ENTER;
3280af22 2198 PL_restartop = 0;
312caa8e 2199 return NULL;
6224f72b
GS
2200}
2201
954c1994
GS
2202/*
2203=for apidoc perl_run
2204
2205Tells a Perl interpreter to run. See L<perlembed>.
2206
2207=cut
2208*/
2209
6224f72b 2210int
0cb96387 2211perl_run(pTHXx)
6224f72b 2212{
97aff369 2213 dVAR;
6224f72b 2214 I32 oldscope;
14dd3ad8 2215 int ret = 0;
db36c5a1 2216 dJMPENV;
6224f72b 2217
7918f24d
NC
2218 PERL_ARGS_ASSERT_PERL_RUN;
2219#ifndef MULTIPLICITY
ed6c66dd 2220 PERL_UNUSED_ARG(my_perl);
7918f24d 2221#endif
9d4ba2ae 2222
3280af22 2223 oldscope = PL_scopestack_ix;
96e176bf
CL
2224#ifdef VMS
2225 VMSISH_HUSHED = 0;
2226#endif
6224f72b 2227
14dd3ad8 2228 JMPENV_PUSH(ret);
6224f72b
GS
2229 switch (ret) {
2230 case 1:
2231 cxstack_ix = -1; /* start context stack again */
312caa8e 2232 goto redo_body;
14dd3ad8 2233 case 0: /* normal completion */
14dd3ad8
GS
2234 redo_body:
2235 run_body(oldscope);
14dd3ad8
GS
2236 /* FALL THROUGH */
2237 case 2: /* my_exit() */
3280af22 2238 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2239 LEAVE;
2240 FREETMPS;
3280af22 2241 PL_curstash = PL_defstash;
3a1ee7e8 2242 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2243 PL_endav && !PL_minus_c)
2244 call_list(oldscope, PL_endav);
6224f72b
GS
2245#ifdef MYMALLOC
2246 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2247 dump_mstats("after execution: ");
2248#endif
37038d91 2249 ret = STATUS_EXIT;
14dd3ad8 2250 break;
6224f72b 2251 case 3:
312caa8e
CS
2252 if (PL_restartop) {
2253 POPSTACK_TO(PL_mainstack);
2254 goto redo_body;
6224f72b 2255 }
bf49b057 2256 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2257 FREETMPS;
14dd3ad8
GS
2258 ret = 1;
2259 break;
6224f72b
GS
2260 }
2261
14dd3ad8
GS
2262 JMPENV_POP;
2263 return ret;
312caa8e
CS
2264}
2265
dd374669 2266STATIC void
14dd3ad8
GS
2267S_run_body(pTHX_ I32 oldscope)
2268{
97aff369 2269 dVAR;
6224f72b 2270 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2271 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2272
3280af22 2273 if (!PL_restartop) {
81d86705
NC
2274#ifdef PERL_MAD
2275 if (PL_xmlfp) {
2276 xmldump_all();
2277 exit(0); /* less likely to core dump than my_exit(0) */
2278 }
2279#endif
6224f72b 2280 DEBUG_x(dump_all());
cf2782cd 2281#ifdef DEBUGGING
ecae49c0
NC
2282 if (!DEBUG_q_TEST)
2283 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2284#endif
6224f72b 2285
3280af22 2286 if (PL_minus_c) {
bf4acbe4 2287#ifdef MACOS_TRADITIONAL
e69a2255
JH
2288 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2289 (gMacPerl_ErrorFormat ? "# " : ""),
2290 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2291#else
bf49b057 2292 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2293#endif
6224f72b
GS
2294 my_exit(0);
2295 }
3280af22 2296 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2297 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2298 if (PL_initav)
2299 call_list(oldscope, PL_initav);
f1fac472
NC
2300#ifdef PERL_DEBUG_READONLY_OPS
2301 Perl_pending_Slabs_to_ro(aTHX);
2302#endif
6224f72b
GS
2303 }
2304
2305 /* do it */
2306
3280af22 2307 if (PL_restartop) {
533c011a 2308 PL_op = PL_restartop;
3280af22 2309 PL_restartop = 0;
cea2e8a9 2310 CALLRUNOPS(aTHX);
6224f72b 2311 }
3280af22
NIS
2312 else if (PL_main_start) {
2313 CvDEPTH(PL_main_cv) = 1;
533c011a 2314 PL_op = PL_main_start;
cea2e8a9 2315 CALLRUNOPS(aTHX);
6224f72b 2316 }
f6b3007c
JH
2317 my_exit(0);
2318 /* NOTREACHED */
6224f72b
GS
2319}
2320
954c1994 2321/*
ccfc67b7
JH
2322=head1 SV Manipulation Functions
2323
954c1994
GS
2324=for apidoc p||get_sv
2325
64ace3f8
NC
2326Returns the SV of the specified Perl scalar. C<flags> are passed to
2327C<gv_fetchpv>. If C<GV_ADD> is set and the
2328Perl variable does not exist then it will be created. If C<flags> is zero
2329and the variable does not exist then NULL is returned.
954c1994
GS
2330
2331=cut
2332*/
2333
6224f72b 2334SV*
64ace3f8 2335Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2336{
2337 GV *gv;
7918f24d
NC
2338
2339 PERL_ARGS_ASSERT_GET_SV;
2340
64ace3f8 2341 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2342 if (gv)
2343 return GvSV(gv);
a0714e2c 2344 return NULL;
6224f72b
GS
2345}
2346
954c1994 2347/*
ccfc67b7
JH
2348=head1 Array Manipulation Functions
2349
954c1994
GS
2350=for apidoc p||get_av
2351
cbfd0a87
NC
2352Returns the AV of the specified Perl array. C<flags> are passed to
2353C<gv_fetchpv>. If C<GV_ADD> is set and the
2354Perl variable does not exist then it will be created. If C<flags> is zero
2355and the variable does not exist then NULL is returned.
954c1994
GS
2356
2357=cut
2358*/
2359
6224f72b 2360AV*
cbfd0a87 2361Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2362{
cbfd0a87 2363 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2364
2365 PERL_ARGS_ASSERT_GET_AV;
2366
cbfd0a87 2367 if (flags)
6224f72b
GS
2368 return GvAVn(gv);
2369 if (gv)
2370 return GvAV(gv);
7d49f689 2371 return NULL;
6224f72b
GS
2372}
2373
954c1994 2374/*
ccfc67b7
JH
2375=head1 Hash Manipulation Functions
2376
954c1994
GS
2377=for apidoc p||get_hv
2378
6673a63c
NC
2379Returns the HV of the specified Perl hash. C<flags> are passed to
2380C<gv_fetchpv>. If C<GV_ADD> is set and the
2381Perl variable does not exist then it will be created. If C<flags> is zero
2382and the variable does not exist then NULL is returned.
954c1994
GS
2383
2384=cut
2385*/
2386
6224f72b 2387HV*
6673a63c 2388Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2389{
6673a63c 2390 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2391
2392 PERL_ARGS_ASSERT_GET_HV;
2393
6673a63c 2394 if (flags)
a0d0e21e
LW
2395 return GvHVn(gv);
2396 if (gv)
2397 return GvHV(gv);
5c284bb0 2398 return NULL;
a0d0e21e
LW
2399}
2400
954c1994 2401/*
ccfc67b7
JH
2402=head1 CV Manipulation Functions
2403
780a5241
NC
2404=for apidoc p||get_cvn_flags
2405
2406Returns the CV of the specified Perl subroutine. C<flags> are passed to
2407C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2408exist then it will be declared (which has the same effect as saying
2409C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2410then NULL is returned.
2411
954c1994
GS
2412=for apidoc p||get_cv
2413
780a5241 2414Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2415
2416=cut
2417*/
2418
a0d0e21e 2419CV*
780a5241 2420Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2421{
780a5241 2422 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2423 /* XXX this is probably not what they think they're getting.
2424 * It has the same effect as "sub name;", i.e. just a forward
2425 * declaration! */
7918f24d
NC
2426
2427 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2428
780a5241 2429 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2430 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2431 return newSUB(start_subparse(FALSE, 0),
780a5241 2432 newSVOP(OP_CONST, 0, sv),
5f66b61c 2433 NULL, NULL);
780a5241 2434 }
a0d0e21e 2435 if (gv)
8ebc5c01 2436 return GvCVu(gv);
601f1833 2437 return NULL;
a0d0e21e
LW
2438}
2439
2c67934f
NC
2440/* Nothing in core calls this now, but we can't replace it with a macro and
2441 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2442CV*
2443Perl_get_cv(pTHX_ const char *name, I32 flags)
2444{
7918f24d
NC
2445 PERL_ARGS_ASSERT_GET_CV;
2446
780a5241
NC
2447 return get_cvn_flags(name, strlen(name), flags);
2448}
2449
79072805
LW
2450/* Be sure to refetch the stack pointer after calling these routines. */
2451
954c1994 2452/*
ccfc67b7
JH
2453
2454=head1 Callback Functions
2455
954c1994
GS
2456=for apidoc p||call_argv
2457
2458Performs a callback to the specified Perl sub. See L<perlcall>.
2459
2460=cut
2461*/
2462
a0d0e21e 2463I32
8f42b153 2464Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2465
8ac85365
NIS
2466 /* See G_* flags in cop.h */
2467 /* null terminated arg list */
8990e307 2468{
97aff369 2469 dVAR;
a0d0e21e 2470 dSP;
8990e307 2471
7918f24d
NC
2472 PERL_ARGS_ASSERT_CALL_ARGV;
2473
924508f0 2474 PUSHMARK(SP);
a0d0e21e 2475 if (argv) {
8990e307 2476 while (*argv) {
6e449a3a 2477 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2478 argv++;
2479 }
a0d0e21e 2480 PUTBACK;
8990e307 2481 }
864dbfa3 2482 return call_pv(sub_name, flags);
8990e307
LW
2483}
2484
954c1994
GS
2485/*
2486=for apidoc p||call_pv
2487
2488Performs a callback to the specified Perl sub. See L<perlcall>.
2489
2490=cut
2491*/
2492
a0d0e21e 2493I32
864dbfa3 2494Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2495 /* name of the subroutine */
2496 /* See G_* flags in cop.h */
a0d0e21e 2497{
7918f24d
NC
2498 PERL_ARGS_ASSERT_CALL_PV;
2499
0da0e728 2500 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2501}
2502
954c1994
GS
2503/*
2504=for apidoc p||call_method
2505
2506Performs a callback to the specified Perl method. The blessed object must
2507be on the stack. See L<perlcall>.
2508
2509=cut
2510*/
2511
a0d0e21e 2512I32
864dbfa3 2513Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2514 /* name of the subroutine */
2515 /* See G_* flags in cop.h */
a0d0e21e 2516{
7918f24d
NC
2517 PERL_ARGS_ASSERT_CALL_METHOD;
2518
968b3946 2519 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2520}
2521
2522/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2523/*
2524=for apidoc p||call_sv
2525
2526Performs a callback to the Perl sub whose name is in the SV. See
2527L<perlcall>.
2528
2529=cut
2530*/
2531
a0d0e21e 2532I32
001d637e 2533Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2534 /* See G_* flags in cop.h */
a0d0e21e 2535{
27da23d5 2536 dVAR; dSP;
a0d0e21e 2537 LOGOP myop; /* fake syntax tree node */
968b3946 2538 UNOP method_op;
aa689395 2539 I32 oldmark;
8ea43dc8 2540 VOL I32 retval = 0;
a0d0e21e 2541 I32 oldscope;
54310121 2542 bool oldcatch = CATCH_GET;
6224f72b 2543 int ret;
c4420975 2544 OP* const oldop = PL_op;
db36c5a1 2545 dJMPENV;
1e422769 2546
7918f24d
NC
2547 PERL_ARGS_ASSERT_CALL_SV;
2548
a0d0e21e
LW
2549 if (flags & G_DISCARD) {
2550 ENTER;
2551 SAVETMPS;
2552 }
2f8edad0
NC
2553 if (!(flags & G_WANT)) {
2554 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2555 */
2556 flags |= G_SCALAR;
2557 }
a0d0e21e 2558
aa689395 2559 Zero(&myop, 1, LOGOP);
5f66b61c 2560 myop.op_next = NULL;
f51d4af5 2561 if (!(flags & G_NOARGS))
aa689395 2562 myop.op_flags |= OPf_STACKED;
4f911530 2563 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2564 SAVEOP();
533c011a 2565 PL_op = (OP*)&myop;
aa689395 2566
3280af22
NIS
2567 EXTEND(PL_stack_sp, 1);
2568 *++PL_stack_sp = sv;
aa689395 2569 oldmark = TOPMARK;
3280af22 2570 oldscope = PL_scopestack_ix;
a0d0e21e 2571
3280af22 2572 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2573 /* Handle first BEGIN of -d. */
3280af22 2574 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2575 /* Try harder, since this may have been a sighandler, thus
2576 * curstash may be meaningless. */
ea726b52 2577 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2578 && !(flags & G_NODEBUG))
533c011a 2579 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2580
968b3946
GS
2581 if (flags & G_METHOD) {
2582 Zero(&method_op, 1, UNOP);
2583 method_op.op_next = PL_op;
2584 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2585 method_op.op_type = OP_METHOD;
968b3946 2586 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2587 myop.op_type = OP_ENTERSUB;
f39d0b86 2588 PL_op = (OP*)&method_op;
968b3946
GS
2589 }
2590
312caa8e 2591 if (!(flags & G_EVAL)) {
0cdb2077 2592 CATCH_SET(TRUE);
d6f07c05 2593 CALL_BODY_SUB((OP*)&myop);
312caa8e 2594 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2595 CATCH_SET(oldcatch);
312caa8e
CS
2596 }
2597 else {
d78bda3d 2598 myop.op_other = (OP*)&myop;
3280af22 2599 PL_markstack_ptr--;
edb2152a 2600 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2601 PL_markstack_ptr++;
a0d0e21e 2602
14dd3ad8 2603 JMPENV_PUSH(ret);
edb2152a 2604
6224f72b
GS
2605 switch (ret) {
2606 case 0:
14dd3ad8 2607 redo_body:
d6f07c05 2608 CALL_BODY_SUB((OP*)&myop);
312caa8e 2609 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2610 if (!(flags & G_KEEPERR)) {
ab69dbc2 2611 CLEAR_ERRSV();
8433848b 2612 }
a0d0e21e 2613 break;
6224f72b 2614 case 1:
f86702cc 2615 STATUS_ALL_FAILURE;
a0d0e21e 2616 /* FALL THROUGH */
6224f72b 2617 case 2:
a0d0e21e 2618 /* my_exit() was called */
3280af22 2619 PL_curstash = PL_defstash;
a0d0e21e 2620 FREETMPS;
14dd3ad8 2621 JMPENV_POP;
cc3604b1 2622 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2623 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2624 my_exit_jump();
a0d0e21e 2625 /* NOTREACHED */
6224f72b 2626 case 3:
3280af22 2627 if (PL_restartop) {
533c011a 2628 PL_op = PL_restartop;
3280af22 2629 PL_restartop = 0;
312caa8e 2630 goto redo_body;
a0d0e21e 2631 }
3280af22 2632 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2633 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2634 retval = 0;
2635 else {
2636 retval = 1;
3280af22 2637 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2638 }
312caa8e 2639 break;
a0d0e21e 2640 }
a0d0e21e 2641
edb2152a
NC
2642 if (PL_scopestack_ix > oldscope)
2643 delete_eval_scope();
14dd3ad8 2644 JMPENV_POP;
a0d0e21e 2645 }
1e422769 2646
a0d0e21e 2647 if (flags & G_DISCARD) {
3280af22 2648 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2649 retval = 0;
2650 FREETMPS;
2651 LEAVE;
2652 }
533c011a 2653 PL_op = oldop;
a0d0e21e
LW
2654 return retval;
2655}
2656
6e72f9df 2657/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2658
954c1994
GS
2659/*
2660=for apidoc p||eval_sv
2661
2662Tells Perl to C<eval> the string in the SV.
2663
2664=cut
2665*/
2666
a0d0e21e 2667I32
864dbfa3 2668Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2669
8ac85365 2670 /* See G_* flags in cop.h */
a0d0e21e 2671{
97aff369 2672 dVAR;
924508f0 2673 dSP;
a0d0e21e 2674 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2675 VOL I32 oldmark = SP - PL_stack_base;
2676 VOL I32 retval = 0;
6224f72b 2677 int ret;
c4420975 2678 OP* const oldop = PL_op;
db36c5a1 2679 dJMPENV;
84902520 2680
7918f24d
NC
2681 PERL_ARGS_ASSERT_EVAL_SV;
2682
4633a7c4
LW
2683 if (flags & G_DISCARD) {
2684 ENTER;
2685 SAVETMPS;
2686 }
2687
462e5cf6 2688 SAVEOP();
533c011a
NIS
2689 PL_op = (OP*)&myop;
2690 Zero(PL_op, 1, UNOP);
3280af22
NIS
2691 EXTEND(PL_stack_sp, 1);
2692 *++PL_stack_sp = sv;
79072805 2693
4633a7c4
LW
2694 if (!(flags & G_NOARGS))
2695 myop.op_flags = OPf_STACKED;
5f66b61c 2696 myop.op_next = NULL;
6e72f9df 2697 myop.op_type = OP_ENTEREVAL;
4f911530 2698 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2699 if (flags & G_KEEPERR)
2700 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2701
dedbcade
DM
2702 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2703 * before a PUSHEVAL, which corrupts the stack after a croak */
2704 TAINT_PROPER("eval_sv()");
2705
14dd3ad8 2706 JMPENV_PUSH(ret);
6224f72b
GS
2707 switch (ret) {
2708 case 0:
14dd3ad8 2709 redo_body:
d6f07c05 2710 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2711 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2712 if (!(flags & G_KEEPERR)) {
ab69dbc2 2713 CLEAR_ERRSV();
8433848b 2714 }
4633a7c4 2715 break;
6224f72b 2716 case 1:
f86702cc 2717 STATUS_ALL_FAILURE;
4633a7c4 2718 /* FALL THROUGH */
6224f72b 2719 case 2:
4633a7c4 2720 /* my_exit() was called */
3280af22 2721 PL_curstash = PL_defstash;
4633a7c4 2722 FREETMPS;
14dd3ad8 2723 JMPENV_POP;
cc3604b1 2724 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2725 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2726 my_exit_jump();
4633a7c4 2727 /* NOTREACHED */
6224f72b 2728 case 3:
3280af22 2729 if (PL_restartop) {
533c011a 2730 PL_op = PL_restartop;
3280af22 2731 PL_restartop = 0;
312caa8e 2732 goto redo_body;
4633a7c4 2733 }
3280af22 2734 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2735 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2736 retval = 0;
2737 else {
2738 retval = 1;
3280af22 2739 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2740 }
312caa8e 2741 break;
4633a7c4
LW
2742 }
2743
14dd3ad8 2744 JMPENV_POP;
4633a7c4 2745 if (flags & G_DISCARD) {
3280af22 2746 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2747 retval = 0;
2748 FREETMPS;
2749 LEAVE;
2750 }
533c011a 2751 PL_op = oldop;
4633a7c4
LW
2752 return retval;
2753}
2754
954c1994
GS
2755/*
2756=for apidoc p||eval_pv
2757
2758Tells Perl to C<eval> the given string and return an SV* result.
2759
2760=cut
2761*/
2762
137443ea 2763SV*
864dbfa3 2764Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2765{
97aff369 2766 dVAR;
137443ea
PP
2767 dSP;
2768 SV* sv = newSVpv(p, 0);
2769
7918f24d
NC
2770 PERL_ARGS_ASSERT_EVAL_PV;
2771
864dbfa3 2772 eval_sv(sv, G_SCALAR);
137443ea
PP
2773 SvREFCNT_dec(sv);
2774
2775 SPAGAIN;
2776 sv = POPs;
2777 PUTBACK;
2778
2d8e6c8d 2779 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2780 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2781 }
137443ea
PP
2782
2783 return sv;
2784}
2785
4633a7c4
LW
2786/* Require a module. */
2787
954c1994 2788/*
ccfc67b7
JH
2789=head1 Embedding Functions
2790
954c1994
GS
2791=for apidoc p||require_pv
2792
7d3fb230
BS
2793Tells Perl to C<require> the file named by the string argument. It is
2794analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2795implemented that way; consider using load_module instead.
954c1994 2796
7d3fb230 2797=cut */
954c1994 2798
4633a7c4 2799void
864dbfa3 2800Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2801{
97aff369 2802 dVAR;
d3acc0f7 2803 dSP;
97aff369 2804 SV* sv;
7918f24d
NC
2805
2806 PERL_ARGS_ASSERT_REQUIRE_PV;
2807
e788e7d3 2808 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2809 PUTBACK;
be41e5d9
NC
2810 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2811 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2812 SPAGAIN;
2813 POPSTACK;
79072805
LW
2814}
2815
76e3520e 2816STATIC void
e1ec3a88 2817S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2818{
ab821d7f 2819 /* This message really ought to be max 23 lines.
75c72d73 2820 * Removed -h because the user already knows that option. Others? */
fb73857a 2821
27da23d5 2822 static const char * const usage_msg[] = {
aefc56c5 2823"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2824"-a autosplit mode with -n or -p (splits $_ into @F)",
2825"-C[number/list] enables the listed Unicode features",
2826"-c check syntax only (runs BEGIN and CHECK blocks)",
2827"-d[:debugger] run program under debugger",
2828"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2829"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2830"-E program like -e, but enables all optional features",
aefc56c5 2831"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2832"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2833"-i[extension] edit <> files in place (makes backup if extension supplied)",
2834"-Idirectory specify @INC/#include directory (several -I's allowed)",
2835"-l[octal] enable line ending processing, specifies line terminator",
2836"-[mM][-]module execute \"use/no module...\" before executing program",
2837"-n assume \"while (<>) { ... }\" loop around program",
2838"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2839"-s enable rudimentary parsing for switches after programfile",
2840"-S look for programfile using PATH environment variable",
2841"-t enable tainting warnings",
2842"-T enable tainting checks",
2843"-u dump core after parsing program",
2844"-U allow unsafe operations",
2845"-v print version, subversion (includes VERY IMPORTANT perl info)",
2846"-V[:variable] print configuration summary (or a single Config.pm variable)",
2847"-w enable many useful warnings (RECOMMENDED)",
2848"-W enable all warnings",
2849"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2850"-X disable all warnings",
fb73857a
PP
2851"\n",
2852NULL
2853};
27da23d5 2854 const char * const *p = usage_msg;
fb73857a 2855
7918f24d
NC
2856 PERL_ARGS_ASSERT_USAGE;
2857
b0e47665
GS
2858 PerlIO_printf(PerlIO_stdout(),
2859 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2860 name);
fb73857a 2861 while (*p)
b0e47665 2862 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2863}
2864
b4ab917c
DM
2865/* convert a string of -D options (or digits) into an int.
2866 * sets *s to point to the char after the options */
2867
2868#ifdef DEBUGGING
2869int
e1ec3a88 2870Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2871{
27da23d5 2872 static const char * const usage_msgd[] = {
e6e64d9b
JC
2873 " Debugging flag values: (see also -d)",
2874 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2875 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2876 " l Context (loop) stack processing",
2877 " t Trace execution",
2878 " o Method and overloading resolution",
2879 " c String/numeric conversions",
4c84d7f2 2880 " P Print profiling info, source file input state",
d7a2c63c 2881 " m Memory and SV allocation",
e6e64d9b
JC
2882 " f Format processing",
2883 " r Regular expression parsing and execution",
2884 " x Syntax tree dump",
3679267a 2885 " u Tainting checks",
e6e64d9b
JC
2886 " H Hash dump -- usurps values()",
2887 " X Scratchpad allocation",
2888 " D Cleaning up",
e6e64d9b
JC
2889 " T Tokenising",
2890 " R Include reference counts of dumped variables (eg when using -Ds)",
2891 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2892 " v Verbose: use in conjunction with other flags",
2893 " C Copy On Write",
2894 " A Consistency checks on internal structures",
3679267a 2895 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2896 NULL
2897 };
b4ab917c 2898 int i = 0;
7918f24d
NC
2899
2900 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2901
b4ab917c
DM
2902 if (isALPHA(**s)) {
2903 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2904 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2905
2906 for (; isALNUM(**s); (*s)++) {
c4420975 2907 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2908 if (d)
2909 i |= 1 << (d - debopts);
2910 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2911 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2912 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2913 }
2914 }
e6e64d9b 2915 else if (isDIGIT(**s)) {
b4ab917c
DM
2916 i = atoi(*s);
2917 for (; isALNUM(**s); (*s)++) ;
2918 }
ddcf8bc1 2919 else if (givehelp) {
06e869a4 2920 const char *const *p = usage_msgd;
e6e64d9b
JC
2921 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2922 }
b4ab917c
DM
2923# ifdef EBCDIC
2924 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2925 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2926 "-Dp not implemented on this platform\n");
2927# endif
2928 return i;
2929}
2930#endif
2931
79072805
LW
2932/* This routine handles any switches that can be given during run */
2933
c7030b81
NC
2934const char *
2935Perl_moreswitches(pTHX_ const char *s)
79072805 2936{
27da23d5 2937 dVAR;
84c133a0 2938 UV rschar;
0544e6df 2939 const char option = *s; /* used to remember option in -m/-M code */
79072805 2940
7918f24d
NC
2941 PERL_ARGS_ASSERT_MORESWITCHES;
2942
79072805
LW
2943 switch (*s) {
2944 case '0':
a863c7d1 2945 {
f2095865 2946 I32 flags = 0;
a3b680e6 2947 STRLEN numlen;
f2095865
JH
2948
2949 SvREFCNT_dec(PL_rs);
2950 if (s[1] == 'x' && s[2]) {
a3b680e6 2951 const char *e = s+=2;
f2095865
JH
2952 U8 *tmps;
2953
a3b680e6
AL
2954 while (*e)
2955 e++;
f2095865
JH
2956 numlen = e - s;
2957 flags = PERL_SCAN_SILENT_ILLDIGIT;
2958 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2959 if (s + numlen < e) {
2960 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2961 numlen = 0;
2962 s--;
2963 }
396482e1 2964 PL_rs = newSVpvs("");
c5661c80 2965 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2966 tmps = (U8*)SvPVX(PL_rs);
2967 uvchr_to_utf8(tmps, rschar);
2968 SvCUR_set(PL_rs, UNISKIP(rschar));
2969 SvUTF8_on(PL_rs);
2970 }
2971 else {
2972 numlen = 4;
2973 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2974 if (rschar & ~((U8)~0))
2975 PL_rs = &PL_sv_undef;
2976 else if (!rschar && numlen >= 2)
396482e1 2977 PL_rs = newSVpvs("");
f2095865
JH
2978 else {
2979 char ch = (char)rschar;
2980 PL_rs = newSVpvn(&ch, 1);
2981 }
2982 }
64ace3f8 2983 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2984 return s + numlen;
a863c7d1 2985 }
46487f74 2986 case 'C':
a05d7ebb 2987 s++;
dd374669 2988 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2989 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2990 PL_utf8cache = -1;
46487f74 2991 return s;
2304df62 2992 case 'F':
3280af22 2993 PL_minus_F = TRUE;
ebce5377
RGS
2994 PL_splitstr = ++s;
2995 while (*s && !isSPACE(*s)) ++s;
e49e380e 2996 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 2997 return s;
79072805 2998 case 'a':
3280af22 2999 PL_minus_a = TRUE;
79072805
LW
3000 s++;
3001 return s;
3002 case 'c':
3280af22 3003 PL_minus_c = TRUE;
79072805
LW
3004 s++;
3005 return s;
3006 case 'd':
f20b2998 3007 forbid_setid('d', FALSE);
4633a7c4 3008 s++;
2cbb2ee1
RGS
3009
3010 /* -dt indicates to the debugger that threads will be used */
3011 if (*s == 't' && !isALNUM(s[1])) {
3012 ++s;
3013 my_setenv("PERL5DB_THREADED", "1");
3014 }
3015
70c94a19
RR
3016 /* The following permits -d:Mod to accepts arguments following an =
3017 in the fashion that -MSome::Mod does. */
3018 if (*s == ':' || *s == '=') {
f85893a1
NC
3019 const char *start = ++s;
3020 const char *const end = s + strlen(s);
396482e1 3021 SV * const sv = newSVpvs("use Devel::");
f85893a1 3022
70c94a19
RR
3023 /* We now allow -d:Module=Foo,Bar */
3024 while(isALNUM(*s) || *s==':') ++s;
3025 if (*s != '=')
f85893a1 3026 sv_catpvn(sv, start, end - start);
70c94a19
RR
3027 else {
3028 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3029 /* Don't use NUL as q// delimiter here, this string goes in the
3030 * environment. */
3031 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3032 }
f85893a1 3033 s = end;
184f32ec 3034 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3035 SvREFCNT_dec(sv);
4633a7c4 3036 }
ed094faf 3037 if (!PL_perldb) {
3280af22 3038 PL_perldb = PERLDB_ALL;
a0d0e21e 3039 init_debugger();
ed094faf 3040 }
79072805
LW
3041 return s;
3042 case 'D':
0453d815 3043 {
79072805 3044#ifdef DEBUGGING
f20b2998 3045 forbid_setid('D', FALSE);
b4ab917c 3046 s++;
dd374669 3047 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3048#else /* !DEBUGGING */
0453d815 3049 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3050 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3051 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3052 for (s++; isALNUM(*s); s++) ;
79072805 3053#endif
79072805 3054 return s;
0453d815 3055 }
4633a7c4 3056 case 'h':
ac27b0f5 3057 usage(PL_origargv[0]);
7ca617d0 3058 my_exit(0);
79072805 3059 case 'i':
43c5f42d 3060 Safefree(PL_inplace);
c030f24b
GH
3061#if defined(__CYGWIN__) /* do backup extension automagically */
3062 if (*(s+1) == '\0') {
c86a4f2e 3063 PL_inplace = savepvs(".bak");
c030f24b
GH
3064 return s+1;
3065 }
3066#endif /* __CYGWIN__ */
5ef5d758 3067 {
d4c19fe8 3068 const char * const start = ++s;
5ef5d758
NC
3069 while (*s && !isSPACE(*s))
3070 ++s;
3071
3072 PL_inplace = savepvn(start, s - start);
3073 }
7b8d334a 3074 if (*s) {
5ef5d758 3075 ++s;
7b8d334a 3076 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3077 s++;
7b8d334a 3078 }
fb73857a 3079 return s;
4e49a025 3080 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3081 forbid_setid('I', FALSE);
fb73857a
PP
3082 ++s;
3083 while (*s && isSPACE(*s))
3084 ++s;
3085 if (*s) {
c7030b81 3086 const char *e, *p;
0df16ed7
GS
3087 p = s;
3088 /* ignore trailing spaces (possibly followed by other switches) */
3089 do {
3090 for (e = p; *e && !isSPACE(*e); e++) ;
3091 p = e;
3092 while (isSPACE(*p))
3093 p++;
3094 } while (*p && *p != '-');
3095 e = savepvn(s, e-s);
20189146 3096 incpush(e, TRUE, TRUE, FALSE, FALSE, TRUE);
0df16ed7
GS
3097 Safefree(e);
3098 s = p;
3099 if (*s == '-')
3100 s++;
79072805
LW
3101 }
3102 else
a67e862a 3103 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3104 return s;
79072805 3105 case 'l':
3280af22 3106 PL_minus_l = TRUE;
79072805 3107 s++;
7889fe52
NIS
3108 if (PL_ors_sv) {
3109 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3110 PL_ors_sv = NULL;
7889fe52 3111 }
79072805 3112 if (isDIGIT(*s)) {
53305cf1 3113 I32 flags = 0;
a3b680e6 3114 STRLEN numlen;
396482e1 3115 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3116 numlen = 3 + (*s == '0');
3117 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3118 s += numlen;
3119 }
3120 else {
8bfdd7d9 3121 if (RsPARA(PL_rs)) {
396482e1 3122 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3123 }
3124 else {
8bfdd7d9 3125 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3126 }
79072805
LW
3127 }
3128 return s;
1a30305b 3129 case 'M':
f20b2998 3130 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3131 /* FALL THROUGH */
3132 case 'm':
f20b2998 3133 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3134 if (*++s) {
c7030b81 3135 const char *start;
b64cb68c 3136 const char *end;
11343788 3137 SV *sv;
e1ec3a88 3138 const char *use = "use ";
0544e6df 3139 bool colon = FALSE;
a5f75d66 3140 /* -M-foo == 'no foo' */
d0043bd1
NC
3141 /* Leading space on " no " is deliberate, to make both
3142 possibilities the same length. */
3143 if (*s == '-') { use = " no "; ++s; }
3144 sv = newSVpvn(use,4);
a5f75d66 3145 start = s;
1a30305b 3146 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3147 while(isALNUM(*s) || *s==':') {
3148 if( *s++ == ':' ) {
3149 if( *s == ':' )
3150 s++;
3151 else
3152 colon = TRUE;
3153 }
3154 }
3155 if (s == start)
3156 Perl_croak(aTHX_ "Module name required with -%c option",
3157 option);
3158 if (colon)
3159 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3160 "contains single ':'",
63da6837 3161 (int)(s - start), start, option);
b64cb68c 3162 end = s + strlen(s);
c07a80fd 3163 if (*s != '=') {
b64cb68c 3164 sv_catpvn(sv, start, end - start);
0544e6df 3165 if (option == 'm') {
c07a80fd 3166 if (*s != '\0')
cea2e8a9 3167 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3168 sv_catpvs( sv, " ()");
c07a80fd
PP
3169 }
3170 } else {
11343788 3171 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3172 /* Use NUL as q''-delimiter. */
3173 sv_catpvs(sv, " split(/,/,q\0");
3174 ++s;
3175 sv_catpvn(sv, s, end - s);
396482e1 3176 sv_catpvs(sv, "\0)");
c07a80fd 3177 }
b64cb68c 3178 s = end;
29a861e7 3179 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3180 }
3181 else
0544e6df 3182 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3183 return s;
79072805 3184 case 'n':
3280af22 3185 PL_minus_n = TRUE;
79072805
LW
3186 s++;
3187 return s;
3188 case 'p':
3280af22 3189 PL_minus_p = TRUE;
79072805
LW
3190 s++;
3191 return s;
3192 case 's':
f20b2998 3193 forbid_setid('s', FALSE);
3280af22 3194 PL_doswitches = TRUE;
79072805
LW
3195 s++;
3196 return s;
6537fe72
MS
3197 case 't':
3198 if (!PL_tainting)
22f7c9c9 3199 TOO_LATE_FOR('t');
6537fe72
MS
3200 s++;
3201 return s;
463ee0b2 3202 case 'T':
3280af22 3203 if (!PL_tainting)
22f7c9c9 3204 TOO_LATE_FOR('T');
463ee0b2
LW
3205 s++;
3206 return s;
79072805 3207 case 'u':
bf4acbe4
GS
3208#ifdef MACOS_TRADITIONAL
3209 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3210#endif
3280af22 3211 PL_do_undump = TRUE;
79072805
LW
3212 s++;
3213 return s;
3214 case 'U':
3280af22 3215 PL_unsafe = TRUE;
79072805
LW
3216 s++;
3217 return s;
3218 case 'v':
d7aa5382 3219 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3220 upg_version(PL_patchlevel, TRUE);
8e9464f1 3221#if !defined(DGUX)
46807d8e
YO
3222 {
3223 SV* level= vstringify(PL_patchlevel);
3224#ifdef PERL_PATCHNUM
23d483e2
NC
3225# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3226 SV *num = newSVpvs(PERL_PATCHNUM "*");
3227# else
3228 SV *num = newSVpvs(PERL_PATCHNUM);
3229# endif
46807d8e
YO
3230
3231 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3232 SvREFCNT_dec(level);
3233 level= num;
3234 } else {
d0a9311f 3235 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3236 SvREFCNT_dec(num);
3237 }
3238 #endif
3239 PerlIO_printf(PerlIO_stdout(),
f1f66076 3240 "\nThis is perl, %"SVf
f1f66076 3241 " built for %s",
46807d8e 3242 level,
f1f66076 3243 ARCHNAME);
46807d8e
YO
3244 SvREFCNT_dec(level);
3245 }
8e9464f1
JH
3246#else /* DGUX */
3247/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3248 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3249 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3250 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3251 PerlIO_printf(PerlIO_stdout(),
3252 Perl_form(aTHX_ " built under %s at %s %s\n",
3253 OSNAME, __DATE__, __TIME__));
3254 PerlIO_printf(PerlIO_stdout(),
3255 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3256 OSVERS));
8e9464f1 3257#endif /* !DGUX */
fb73857a
PP
3258#if defined(LOCAL_PATCH_COUNT)
3259 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3260 PerlIO_printf(PerlIO_stdout(),
3261 "\n(with %d registered patch%s, "
3262 "see perl -V for more detail)",
bb7a0f54 3263 LOCAL_PATCH_COUNT,
b0e47665 3264 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3265#endif
1a30305b 3266
b0e47665 3267 PerlIO_printf(PerlIO_stdout(),
737f4459 3268 "\n\nCopyright 1987-2009, Larry Wall\n");
eae9c151
JH
3269#ifdef MACOS_TRADITIONAL
3270 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3271 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3272 "maintained by Chris Nandor\n");
eae9c151 3273#endif
79072805 3274#ifdef MSDOS
b0e47665
GS
3275 PerlIO_printf(PerlIO_stdout(),
3276 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3277#endif
3278#ifdef DJGPP
b0e47665
GS
3279 PerlIO_printf(PerlIO_stdout(),
3280 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3281 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3282#endif
79072805 3283#ifdef OS2
b0e47665
GS
3284 PerlIO_printf(PerlIO_stdout(),
3285 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3286 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3287#endif
79072805 3288#ifdef atarist
b0e47665
GS
3289 PerlIO_printf(PerlIO_stdout(),
3290 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3291#endif
a3f9223b 3292#ifdef __BEOS__
b0e47665
GS
3293 PerlIO_printf(PerlIO_stdout(),
3294 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3295#endif
1d84e8df 3296#ifdef MPE
b0e47665 3297 PerlIO_printf(PerlIO_stdout(),
e583a879 3298 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3299#endif
9d116dd7 3300#ifdef OEMVS
b0e47665
GS
3301 PerlIO_printf(PerlIO_stdout(),
3302 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3303#endif
495c5fdc 3304#ifdef __VOS__
b0e47665 3305 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3306 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3307#endif
092bebab 3308#ifdef __OPEN_VM
b0e47665
GS
3309 PerlIO_printf(PerlIO_stdout(),
3310 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3311#endif
a1a0e61e 3312#ifdef POSIX_BC
b0e47665
GS
3313 PerlIO_printf(PerlIO_stdout(),
3314 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3315#endif
61ae2fbf 3316#ifdef __MINT__
b0e47665
GS
3317 PerlIO_printf(PerlIO_stdout(),
3318 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3319#endif
f83d2536 3320#ifdef EPOC
b0e47665 3321 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3322 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3323#endif
e1caacb4 3324#ifdef UNDER_CE
b475b3e6
JH
3325 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3326 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3327 wce_hitreturn();
3328#endif
a0fd4948 3329#ifdef __SYMBIAN32__
27da23d5
JH
3330 PerlIO_printf(PerlIO_stdout(),
3331 "Symbian port by Nokia, 2004-2005\n");
3332#endif
baed7233
DL
3333#ifdef BINARY_BUILD_NOTICE
3334 BINARY_BUILD_NOTICE;
3335#endif
b0e47665
GS
3336 PerlIO_printf(PerlIO_stdout(),
3337 "\n\
79072805 3338Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3339GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3340Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3341this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3342Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3343 my_exit(0);
79072805 3344 case 'w':
b2e5e6ba 3345 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3346 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3347 }
599cee73
PM
3348 s++;
3349 return s;
3350 case 'W':
ac27b0f5 3351 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3352 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3353 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3354 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3355 s++;
3356 return s;
3357 case 'X':
ac27b0f5 3358 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3359 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3360 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3361 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3362 s++;
3363 return s;
a0d0e21e 3364 case '*':
79072805 3365 case ' ':
d3133c89
NC
3366 while( *s == ' ' )
3367 ++s;
3368 if (s[0] == '-') /* Additional switches on #! line. */
3369 return s+1;
79072805 3370 break;
a0d0e21e 3371 case '-':
79072805 3372 case 0:
51882d45 3373#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3374 case '\r':
3375#endif
79072805
LW
3376 case '\n':
3377 case '\t':
3378 break;
aa689395
PP
3379#ifdef ALTERNATE_SHEBANG
3380 case 'S': /* OS/2 needs -S on "extproc" line. */
3381 break;
3382#endif
79072805 3383 default:
cea2e8a9 3384 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3385 }
bd61b366 3386 return NULL;
79072805
LW
3387}
3388
3389/* compliments of Tom Christiansen */
3390
3391/* unexec() can be found in the Gnu emacs distribution */
ee580363 3392/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3393
3394void
864dbfa3 3395Perl_my_unexec(pTHX)
79072805 3396{
b37c2d43 3397 PERL_UNUSED_CONTEXT;
79072805 3398#ifdef UNEXEC
b37c2d43
AL
3399 SV * prog = newSVpv(BIN_EXP, 0);
3400 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3401 int status = 1;
79072805
LW
3402 extern int etext;
3403
396482e1 3404 sv_catpvs(prog, "/perl");
396482e1 3405 sv_catpvs(file, ".perldump");
79072805 3406
ee580363
GS
3407 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3408 /* unexec prints msg to stderr in case of failure */
6ad3d225 3409 PerlProc_exit(status);
79072805 3410#else
a5f75d66
AD
3411# ifdef VMS
3412# include <lib$routines.h>
3413 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3414# elif defined(WIN32) || defined(__CYGWIN__)
3415 Perl_croak(aTHX_ "dump is not supported");
aa689395 3416# else
79072805 3417 ABORT(); /* for use with undump */
aa689395 3418# endif
a5f75d66 3419#endif
79072805
LW
3420}
3421
cb68f92d
GS
3422/* initialize curinterp */
3423STATIC void
cea2e8a9 3424S_init_interp(pTHX)
cb68f92d 3425{
97aff369 3426 dVAR;
acfe0abc
GS
3427#ifdef MULTIPLICITY
3428# define PERLVAR(var,type)
3429# define PERLVARA(var,n,type)
3430# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3431# define PERLVARI(var,type,init) aTHX->var = init;
3432# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3433# else
acfe0abc
GS
3434# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3435# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3436# endif
acfe0abc 3437# include "intrpvar.h"
acfe0abc
GS
3438# undef PERLVAR
3439# undef PERLVARA
3440# undef PERLVARI
3441# undef PERLVARIC
3442#else
3443# define PERLVAR(var,type)
3444# define PERLVARA(var,n,type)
3445# define PERLVARI(var,type,init) PL_##var = init;
3446# define PERLVARIC(var,type,init) PL_##var = init;
3447# include "intrpvar.h"
acfe0abc
GS
3448# undef PERLVAR
3449# undef PERLVARA
3450# undef PERLVARI
3451# undef PERLVARIC
cb68f92d
GS
3452#endif
3453
46ab3289
NC
3454 /* As these are inside a structure, PERLVARI isn't capable of initialising
3455 them */
6c3f0a89
NC
3456 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3457 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3458}
3459
76e3520e 3460STATIC void
cea2e8a9 3461S_init_main_stash(pTHX)
79072805 3462{
97aff369 3463 dVAR;
463ee0b2 3464 GV *gv;
6e72f9df 3465
3280af22 3466 PL_curstash = PL_defstash = newHV();
23579a14
NC
3467 /* We know that the string "main" will be in the global shared string
3468 table, so it's a small saving to use it rather than allocate another
3469 8 bytes. */
18916d0d 3470 PL_curstname = newSVpvs_share("main");
fafc274c 3471 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3472 /* If we hadn't caused another reference to "main" to be in the shared
3473 string table above, then it would be worth reordering these two,
3474 because otherwise all we do is delete "main" from it as a consequence
3475 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1