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1/* perl.c
2 *
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3 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
4 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by Larry Wall and others
a687059c 5 *
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6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
a687059c 8 *
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9 */
10
a0d0e21e 11/*
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TC
12 * A ship then new they built for him
13 * of mithril and of elven-glass
14 * --from Bilbo's song of Eärendil
15 *
16 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 17 */
45d8adaa 18
166f8a29
DM
19/* This file contains the top-level functions that are used to create, use
20 * and destroy a perl interpreter, plus the functions used by XS code to
21 * call back into perl. Note that it does not contain the actual main()
ddfa107c 22 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
23 */
24
378cc40b 25#include "EXTERN.h"
864dbfa3 26#define PERL_IN_PERL_C
378cc40b 27#include "perl.h"
e3321bb0 28#include "patchlevel.h" /* for local_patches */
378cc40b 29
011f1a1a
JH
30#ifdef NETWARE
31#include "nwutil.h"
011f1a1a
JH
32#endif
33
df5cef82 34/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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35#ifdef I_UNISTD
36#include <unistd.h>
37#endif
a0d0e21e 38
2aa47728
NC
39#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
40# ifdef I_SYS_WAIT
41# include <sys/wait.h>
42# endif
bf357333
NC
43# ifdef I_SYSUIO
44# include <sys/uio.h>
45# endif
46
47union control_un {
48 struct cmsghdr cm;
49 char control[CMSG_SPACE(sizeof(int))];
50};
51
2aa47728
NC
52#endif
53
5311654c
JH
54#ifdef __BEOS__
55# define HZ 1000000
56#endif
57
58#ifndef HZ
59# ifdef CLK_TCK
60# define HZ CLK_TCK
61# else
62# define HZ 60
63# endif
64#endif
65
7114a2d2 66#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 67char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
68#endif
69
acfe0abc 70static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 71
cc69b689 72#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 73/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
74# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
75#else
ec2019ad 76/* Drop almost everything */
cc69b689 77# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 78#endif
8d063cd8 79
d6f07c05
AL
80#define CALL_BODY_EVAL(myop) \
81 if (PL_op == (myop)) \
139d0ce6 82 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX); \
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AL
83 if (PL_op) \
84 CALLRUNOPS(aTHX);
85
86#define CALL_BODY_SUB(myop) \
87 if (PL_op == (myop)) \
139d0ce6 88 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
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AL
89 if (PL_op) \
90 CALLRUNOPS(aTHX);
91
92#define CALL_LIST_BODY(cv) \
93 PUSHMARK(PL_stack_sp); \
ad64d0ec 94 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
d6f07c05 95
e6827a76 96static void
daa7d858 97S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 98{
27da23d5 99 dVAR;
e6827a76
NC
100 if (!PL_curinterp) {
101 PERL_SET_INTERP(my_perl);
3db8f154 102#if defined(USE_ITHREADS)
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NC
103 INIT_THREADS;
104 ALLOC_THREAD_KEY;
105 PERL_SET_THX(my_perl);
106 OP_REFCNT_INIT;
71ad1b0c 107 HINTS_REFCNT_INIT;
e6827a76 108 MUTEX_INIT(&PL_dollarzero_mutex);
06d86050 109# endif
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110#ifdef PERL_IMPLICIT_CONTEXT
111 MUTEX_INIT(&PL_my_ctx_mutex);
112# endif
e6827a76 113 }
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NC
114#if defined(USE_ITHREADS)
115 else
116#else
117 /* This always happens for non-ithreads */
118#endif
119 {
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120 PERL_SET_THX(my_perl);
121 }
122}
06d86050 123
cbec8ebe
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124
125/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
126
127void
128Perl_sys_init(int* argc, char*** argv)
129{
4fc0badb 130 dVAR;
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131
132 PERL_ARGS_ASSERT_SYS_INIT;
133
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134 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
135 PERL_UNUSED_ARG(argv);
136 PERL_SYS_INIT_BODY(argc, argv);
137}
138
139void
140Perl_sys_init3(int* argc, char*** argv, char*** env)
141{
4fc0badb 142 dVAR;
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143
144 PERL_ARGS_ASSERT_SYS_INIT3;
145
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146 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
147 PERL_UNUSED_ARG(argv);
148 PERL_UNUSED_ARG(env);
149 PERL_SYS_INIT3_BODY(argc, argv, env);
150}
151
152void
d0820ef1 153Perl_sys_term()
cbec8ebe 154{
4fc0badb 155 dVAR;
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156 if (!PL_veto_cleanup) {
157 PERL_SYS_TERM_BODY();
158 }
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DM
159}
160
161
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162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
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164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
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171
172 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
173
9f653bb5 174 /* Newx() needs interpreter, so call malloc() instead */
32e30700 175 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 176 S_init_tls_and_interp(my_perl);
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177 Zero(my_perl, 1, PerlInterpreter);
178 PL_Mem = ipM;
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179 PL_MemShared = ipMS;
180 PL_MemParse = ipMP;
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181 PL_Env = ipE;
182 PL_StdIO = ipStd;
183 PL_LIO = ipLIO;
184 PL_Dir = ipD;
185 PL_Sock = ipS;
186 PL_Proc = ipP;
7cb608b5 187 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 188
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189 return my_perl;
190}
191#else
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GS
192
193/*
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194=head1 Embedding Functions
195
954c1994
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196=for apidoc perl_alloc
197
198Allocates a new Perl interpreter. See L<perlembed>.
199
200=cut
201*/
202
93a17b20 203PerlInterpreter *
cea2e8a9 204perl_alloc(void)
79072805 205{
cea2e8a9 206 PerlInterpreter *my_perl;
79072805 207
9f653bb5 208 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 209 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 210
e6827a76 211 S_init_tls_and_interp(my_perl);
7cb608b5 212#ifndef PERL_TRACK_MEMPOOL
07409e01 213 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
214#else
215 Zero(my_perl, 1, PerlInterpreter);
216 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
217 return my_perl;
218#endif
79072805 219}
32e30700 220#endif /* PERL_IMPLICIT_SYS */
79072805 221
954c1994
GS
222/*
223=for apidoc perl_construct
224
225Initializes a new Perl interpreter. See L<perlembed>.
226
227=cut
228*/
229
79072805 230void
0cb96387 231perl_construct(pTHXx)
79072805 232{
27da23d5 233 dVAR;
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234
235 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
236
8990e307 237#ifdef MULTIPLICITY
54aff467 238 init_interp();
ac27b0f5 239 PL_perl_destruct_level = 1;
54aff467 240#else
7918f24d 241 PERL_UNUSED_ARG(my_perl);
54aff467
GS
242 if (PL_perl_destruct_level > 0)
243 init_interp();
244#endif
34caed6d
DM
245 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
246
34caed6d
DM
247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
252
253 sv_setpv(&PL_sv_no,PL_No);
254 /* value lookup in void context - happens to have the side effect
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NC
255 of caching the numeric forms. However, as &PL_sv_no doesn't contain
256 a string that is a valid numer, we have to turn the public flags by
257 hand: */
34caed6d 258 SvNV(&PL_sv_no);
c1939273 259 SvIV(&PL_sv_no);
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260 SvIOK_on(&PL_sv_no);
261 SvNOK_on(&PL_sv_no);
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DM
262 SvREADONLY_on(&PL_sv_no);
263 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
264
265 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 266 SvNV(&PL_sv_yes);
c1939273 267 SvIV(&PL_sv_yes);
34caed6d
DM
268 SvREADONLY_on(&PL_sv_yes);
269 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
270
271 SvREADONLY_on(&PL_sv_placeholder);
272 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
273
274 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 275#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 276 PL_pidstatus = newHV();
ca0c25f6 277#endif
79072805 278
396482e1 279 PL_rs = newSVpvs("\n");
dc92893f 280
cea2e8a9 281 init_stacks();
79072805 282
748a9306 283 init_ids();
a5f75d66 284
312caa8e 285 JMPENV_BOOTSTRAP;
f86702cc
PP
286 STATUS_ALL_SUCCESS;
287
0672f40e 288 init_i18nl10n(1);
36477c24 289 SET_NUMERIC_STANDARD();
0b5b802d 290
ab821d7f 291#if defined(LOCAL_PATCH_COUNT)
3280af22 292 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
293#endif
294
52853b95
GS
295#ifdef HAVE_INTERP_INTERN
296 sys_intern_init();
297#endif
298
3a1ee7e8 299 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 300
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NIS
301 PL_fdpid = newAV(); /* for remembering popen pids by fd */
302 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 303 PL_errors = newSVpvs("");
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MHM
304 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
305 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
306 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 307#ifdef USE_ITHREADS
402d2eb1
NC
308 /* First entry is a list of empty elements. It needs to be initialised
309 else all hell breaks loose in S_find_uninit_var(). */
310 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 311 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 312#endif
e5dd39fc 313#ifdef USE_REENTRANT_API
59bd0823 314 Perl_reentrant_init(aTHX);
e5dd39fc 315#endif
3d47000e
AB
316
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
320 PL_strtab = newHV();
321
3d47000e
AB
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
324
0631ea03
AB
325#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
328#endif /* environ */
329
2f42fcb0
JH
330#ifndef PERL_MICRO
331# ifdef USE_ENVIRON_ARRAY
0631ea03 332 PL_origenviron = environ;
2f42fcb0 333# endif
0631ea03
AB
334#endif
335
5311654c 336 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 337 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
dbc1d986 341#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
344#endif
345 PL_clocktick = HZ;
346
081fc587
AB
347 PL_stashcache = newHV();
348
e8e3635e 349 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 350
27da23d5
JH
351#ifdef HAS_MMAP
352 if (!PL_mmap_page_size) {
353#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
354 {
355 SETERRNO(0, SS_NORMAL);
356# ifdef _SC_PAGESIZE
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
358# else
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
360# endif
361 if ((long) PL_mmap_page_size < 0) {
362 if (errno) {
44f8325f 363 SV * const error = ERRSV;
d4c19fe8 364 SvUPGRADE(error, SVt_PV);
0510663f 365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
366 }
367 else
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
369 }
370 }
371#else
372# ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
374# else
375# if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
377# endif
378# endif
379#endif
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
383 }
384#endif /* HAS_MMAP */
385
386#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
391#endif
392
a3e6e81e 393 PL_registered_mros = newHV();
9e169432
NC
394 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
395 HvMAX(PL_registered_mros) = 0;
a3e6e81e 396
8990e307 397 ENTER;
79072805
LW
398}
399
954c1994 400/*
62375a60
NIS
401=for apidoc nothreadhook
402
403Stub that provides thread hook for perl_destruct when there are
404no threads.
405
406=cut
407*/
408
409int
4e9e3734 410Perl_nothreadhook(pTHX)
62375a60 411{
96a5add6 412 PERL_UNUSED_CONTEXT;
62375a60
NIS
413 return 0;
414}
415
41e4abd8
NC
416#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
417void
418Perl_dump_sv_child(pTHX_ SV *sv)
419{
420 ssize_t got;
bf357333
NC
421 const int sock = PL_dumper_fd;
422 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
423 union control_un control;
424 struct msghdr msg;
808ad2d0 425 struct iovec vec[2];
bf357333 426 struct cmsghdr *cmptr;
808ad2d0
NC
427 int returned_errno;
428 unsigned char buffer[256];
41e4abd8 429
7918f24d
NC
430 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
431
bf357333 432 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
433 return;
434
435 PerlIO_flush(Perl_debug_log);
436
bf357333
NC
437 /* All these shenanigans are to pass a file descriptor over to our child for
438 it to dump out to. We can't let it hold open the file descriptor when it
439 forks, as the file descriptor it will dump to can turn out to be one end
440 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 441 be open, the wait would be forever.) */
bf357333
NC
442
443 msg.msg_control = control.control;
444 msg.msg_controllen = sizeof(control.control);
445 /* We're a connected socket so we don't need a destination */
446 msg.msg_name = NULL;
447 msg.msg_namelen = 0;
448 msg.msg_iov = vec;
808ad2d0 449 msg.msg_iovlen = 1;
bf357333
NC
450
451 cmptr = CMSG_FIRSTHDR(&msg);
452 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
453 cmptr->cmsg_level = SOL_SOCKET;
454 cmptr->cmsg_type = SCM_RIGHTS;
455 *((int *)CMSG_DATA(cmptr)) = 1;
456
457 vec[0].iov_base = (void*)&sv;
458 vec[0].iov_len = sizeof(sv);
459 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
460
461 if(got < 0) {
bf357333 462 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
463 abort();
464 }
bf357333
NC
465 if(got < sizeof(sv)) {
466 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
467 abort();
468 }
469
808ad2d0
NC
470 /* Return protocol is
471 int: errno value
472 unsigned char: length of location string (0 for empty)
473 unsigned char*: string (not terminated)
474 */
475 vec[0].iov_base = (void*)&returned_errno;
476 vec[0].iov_len = sizeof(returned_errno);
477 vec[1].iov_base = buffer;
478 vec[1].iov_len = 1;
479
480 got = readv(sock, vec, 2);
41e4abd8
NC
481
482 if(got < 0) {
483 perror("Debug leaking scalars parent read failed");
808ad2d0 484 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
485 abort();
486 }
808ad2d0 487 if(got < sizeof(returned_errno) + 1) {
41e4abd8 488 perror("Debug leaking scalars parent short read");
808ad2d0 489 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
490 abort();
491 }
492
808ad2d0
NC
493 if (*buffer) {
494 got = read(sock, buffer + 1, *buffer);
495 if(got < 0) {
496 perror("Debug leaking scalars parent read 2 failed");
497 PerlIO_flush(PerlIO_stderr());
498 abort();
499 }
500
501 if(got < *buffer) {
502 perror("Debug leaking scalars parent short read 2");
503 PerlIO_flush(PerlIO_stderr());
504 abort();
505 }
506 }
507
508 if (returned_errno || *buffer) {
509 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
510 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
511 returned_errno, strerror(returned_errno));
41e4abd8
NC
512 }
513}
514#endif
515
62375a60 516/*
954c1994
GS
517=for apidoc perl_destruct
518
519Shuts down a Perl interpreter. See L<perlembed>.
520
521=cut
522*/
523
31d77e54 524int
0cb96387 525perl_destruct(pTHXx)
79072805 526{
27da23d5 527 dVAR;
be2ea8ed 528 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 529 HV *hv;
2aa47728 530#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
531 pid_t child;
532#endif
8990e307 533
7918f24d
NC
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
7766f137
GS
539 /* wait for all pseudo-forked children to finish */
540 PERL_WAIT_FOR_CHILDREN;
541
3280af22 542 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
543#ifdef DEBUGGING
544 {
9d4ba2ae
AL
545 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
546 if (s) {
e1ec3a88 547 const int i = atoi(s);
5f05dabc
PP
548 if (destruct_level < i)
549 destruct_level = i;
550 }
4633a7c4
LW
551 }
552#endif
553
27da23d5 554 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
555 dJMPENV;
556 int x = 0;
557
558 JMPENV_PUSH(x);
1b6737cc 559 PERL_UNUSED_VAR(x);
f3faeb53
AB
560 if (PL_endav && !PL_minus_c)
561 call_list(PL_scopestack_ix, PL_endav);
562 JMPENV_POP;
26f423df 563 }
f3faeb53 564 LEAVE;
a0d0e21e
LW
565 FREETMPS;
566
e00b64d4 567 /* Need to flush since END blocks can produce output */
f13a2bc0 568 my_fflush_all();
e00b64d4 569
62375a60
NIS
570 if (CALL_FPTR(PL_threadhook)(aTHX)) {
571 /* Threads hook has vetoed further cleanup */
c301d606 572 PL_veto_cleanup = TRUE;
37038d91 573 return STATUS_EXIT;
62375a60
NIS
574 }
575
2aa47728
NC
576#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
577 if (destruct_level != 0) {
578 /* Fork here to create a child. Our child's job is to preserve the
579 state of scalars prior to destruction, so that we can instruct it
580 to dump any scalars that we later find have leaked.
581 There's no subtlety in this code - it assumes POSIX, and it doesn't
582 fail gracefully */
583 int fd[2];
584
585 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
586 perror("Debug leaking scalars socketpair failed");
587 abort();
588 }
589
590 child = fork();
591 if(child == -1) {
592 perror("Debug leaking scalars fork failed");
593 abort();
594 }
595 if (!child) {
596 /* We are the child */
3125a5a4
NC
597 const int sock = fd[1];
598 const int debug_fd = PerlIO_fileno(Perl_debug_log);
599 int f;
808ad2d0
NC
600 const char *where;
601 /* Our success message is an integer 0, and a char 0 */
b61433a9 602 static const char success[sizeof(int) + 1] = {0};
3125a5a4 603
2aa47728 604 close(fd[0]);
2aa47728 605
3125a5a4
NC
606 /* We need to close all other file descriptors otherwise we end up
607 with interesting hangs, where the parent closes its end of a
608 pipe, and sits waiting for (another) child to terminate. Only
609 that child never terminates, because it never gets EOF, because
bf357333
NC
610 we also have the far end of the pipe open. We even need to
611 close the debugging fd, because sometimes it happens to be one
612 end of a pipe, and a process is waiting on the other end for
613 EOF. Normally it would be closed at some point earlier in
614 destruction, but if we happen to cause the pipe to remain open,
615 EOF never occurs, and we get an infinite hang. Hence all the
616 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
617
618 f = sysconf(_SC_OPEN_MAX);
619 if(f < 0) {
808ad2d0
NC
620 where = "sysconf failed";
621 goto abort;
3125a5a4
NC
622 }
623 while (f--) {
624 if (f == sock)
625 continue;
3125a5a4
NC
626 close(f);
627 }
628
2aa47728
NC
629 while (1) {
630 SV *target;
bf357333
NC
631 union control_un control;
632 struct msghdr msg;
633 struct iovec vec[1];
634 struct cmsghdr *cmptr;
635 ssize_t got;
636 int got_fd;
637
638 msg.msg_control = control.control;
639 msg.msg_controllen = sizeof(control.control);
640 /* We're a connected socket so we don't need a source */
641 msg.msg_name = NULL;
642 msg.msg_namelen = 0;
643 msg.msg_iov = vec;
644 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
645
646 vec[0].iov_base = (void*)&target;
647 vec[0].iov_len = sizeof(target);
648
649 got = recvmsg(sock, &msg, 0);
2aa47728
NC
650
651 if(got == 0)
652 break;
653 if(got < 0) {
808ad2d0
NC
654 where = "recv failed";
655 goto abort;
2aa47728
NC
656 }
657 if(got < sizeof(target)) {
808ad2d0
NC
658 where = "short recv";
659 goto abort;
2aa47728 660 }
bf357333 661
808ad2d0
NC
662 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
663 where = "no cmsg";
664 goto abort;
665 }
666 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
667 where = "wrong cmsg_len";
668 goto abort;
669 }
670 if(cmptr->cmsg_level != SOL_SOCKET) {
671 where = "wrong cmsg_level";
672 goto abort;
673 }
674 if(cmptr->cmsg_type != SCM_RIGHTS) {
675 where = "wrong cmsg_type";
676 goto abort;
677 }
bf357333
NC
678
679 got_fd = *(int*)CMSG_DATA(cmptr);
680 /* For our last little bit of trickery, put the file descriptor
681 back into Perl_debug_log, as if we never actually closed it
682 */
808ad2d0
NC
683 if(got_fd != debug_fd) {
684 if (dup2(got_fd, debug_fd) == -1) {
685 where = "dup2";
686 goto abort;
687 }
688 }
2aa47728 689 sv_dump(target);
bf357333 690
2aa47728
NC
691 PerlIO_flush(Perl_debug_log);
692
808ad2d0 693 got = write(sock, &success, sizeof(success));
2aa47728
NC
694
695 if(got < 0) {
808ad2d0
NC
696 where = "write failed";
697 goto abort;
2aa47728 698 }
808ad2d0
NC
699 if(got < sizeof(success)) {
700 where = "short write";
701 goto abort;
2aa47728
NC
702 }
703 }
704 _exit(0);
808ad2d0
NC
705 abort:
706 {
707 int send_errno = errno;
708 unsigned char length = (unsigned char) strlen(where);
709 struct iovec failure[3] = {
710 {(void*)&send_errno, sizeof(send_errno)},
711 {&length, 1},
712 {(void*)where, length}
713 };
714 int got = writev(sock, failure, 3);
715 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
716 in the parent if we try to read from the socketpair after the
717 child has exited, even if there was data to read.
718 So sleep a bit to give the parent a fighting chance of
719 reading the data. */
720 sleep(2);
721 _exit((got == -1) ? errno : 0);
722 }
bf357333 723 /* End of child. */
2aa47728 724 }
41e4abd8 725 PL_dumper_fd = fd[0];
2aa47728
NC
726 close(fd[1]);
727 }
728#endif
729
ff0cee69
PP
730 /* We must account for everything. */
731
732 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
733 /* Do this now, because destroying ops can cause new SVs to be generated
734 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
735 PL_curcop to point to a valid op from which the filename structure
736 member is copied. */
737 PL_curcop = &PL_compiling;
3280af22 738 if (PL_main_root) {
4e380990
DM
739 /* ensure comppad/curpad to refer to main's pad */
740 if (CvPADLIST(PL_main_cv)) {
741 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
742 }
3280af22 743 op_free(PL_main_root);
5f66b61c 744 PL_main_root = NULL;
a0d0e21e 745 }
5f66b61c 746 PL_main_start = NULL;
3280af22 747 SvREFCNT_dec(PL_main_cv);
601f1833 748 PL_main_cv = NULL;
24d3c518 749 PL_dirty = TRUE;
ff0cee69 750
13621cfb
NIS
751 /* Tell PerlIO we are about to tear things apart in case
752 we have layers which are using resources that should
753 be cleaned up now.
754 */
755
756 PerlIO_destruct(aTHX);
757
3280af22 758 if (PL_sv_objcount) {
a0d0e21e
LW
759 /*
760 * Try to destruct global references. We do this first so that the
761 * destructors and destructees still exist. Some sv's might remain.
762 * Non-referenced objects are on their own.
763 */
a0d0e21e 764 sv_clean_objs();
bf9cdc68 765 PL_sv_objcount = 0;
a0de6cf5 766 if (PL_defoutgv && !SvREFCNT(PL_defoutgv))
a0714e2c 767 PL_defoutgv = NULL; /* may have been freed */
8990e307
LW
768 }
769
5cd24f17 770 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 771 SvREFCNT_dec(PL_warnhook);
a0714e2c 772 PL_warnhook = NULL;
3280af22 773 SvREFCNT_dec(PL_diehook);
a0714e2c 774 PL_diehook = NULL;
5cd24f17 775
4b556e6c 776 /* call exit list functions */
3280af22 777 while (PL_exitlistlen-- > 0)
acfe0abc 778 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 779
3280af22 780 Safefree(PL_exitlist);
4b556e6c 781
1c4916e5
CB
782 PL_exitlist = NULL;
783 PL_exitlistlen = 0;
784
a3e6e81e
NC
785 SvREFCNT_dec(PL_registered_mros);
786
551a8b83 787 /* jettison our possibly duplicated environment */
4b647fb0
DM
788 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
789 * so we certainly shouldn't free it here
790 */
2f42fcb0 791#ifndef PERL_MICRO
4b647fb0 792#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 793 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
794#ifdef USE_ITHREADS
795 /* only main thread can free environ[0] contents */
796 && PL_curinterp == aTHX
797#endif
798 )
799 {
551a8b83
JH
800 I32 i;
801
802 for (i = 0; environ[i]; i++)
4b420006 803 safesysfree(environ[i]);
0631ea03 804
4b420006
JH
805 /* Must use safesysfree() when working with environ. */
806 safesysfree(environ);
551a8b83
JH
807
808 environ = PL_origenviron;
809 }
810#endif
2f42fcb0 811#endif /* !PERL_MICRO */
551a8b83 812
30985c42
JH
813 if (destruct_level == 0) {
814
815 DEBUG_P(debprofdump());
816
817#if defined(PERLIO_LAYERS)
818 /* No more IO - including error messages ! */
819 PerlIO_cleanup(aTHX);
820#endif
821
822 CopFILE_free(&PL_compiling);
823 CopSTASH_free(&PL_compiling);
824
825 /* The exit() function will do everything that needs doing. */
826 return STATUS_EXIT;
827 }
828
804ffa60 829 /* reset so print() ends up where we expect */
a0714e2c 830 setdefout(NULL);
804ffa60 831
5f8cb046
DM
832#ifdef USE_ITHREADS
833 /* the syntax tree is shared between clones
834 * so op_free(PL_main_root) only ReREFCNT_dec's
835 * REGEXPs in the parent interpreter
836 * we need to manually ReREFCNT_dec for the clones
837 */
5f8cb046 838 SvREFCNT_dec(PL_regex_padav);
7d49f689 839 PL_regex_padav = NULL;
5f8cb046
DM
840 PL_regex_pad = NULL;
841#endif
842
ad64d0ec 843 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
844 PL_stashcache = NULL;
845
5f05dabc
PP
846 /* loosen bonds of global variables */
847
2f9285f8
DM
848 /* XXX can PL_parser still be non-null here? */
849 if(PL_parser && PL_parser->rsfp) {
850 (void)PerlIO_close(PL_parser->rsfp);
851 PL_parser->rsfp = NULL;
8ebc5c01
PP
852 }
853
84386e14
RGS
854 if (PL_minus_F) {
855 Safefree(PL_splitstr);
856 PL_splitstr = NULL;
857 }
858
8ebc5c01 859 /* switches */
3280af22
NIS
860 PL_minus_n = FALSE;
861 PL_minus_p = FALSE;
862 PL_minus_l = FALSE;
863 PL_minus_a = FALSE;
864 PL_minus_F = FALSE;
865 PL_doswitches = FALSE;
599cee73 866 PL_dowarn = G_WARN_OFF;
3280af22
NIS
867 PL_doextract = FALSE;
868 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
869 PL_unsafe = FALSE;
870
871 Safefree(PL_inplace);
bd61b366 872 PL_inplace = NULL;
a7cb1f99 873 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
874
875 if (PL_e_script) {
876 SvREFCNT_dec(PL_e_script);
a0714e2c 877 PL_e_script = NULL;
8ebc5c01
PP
878 }
879
bf9cdc68
RG
880 PL_perldb = 0;
881
8ebc5c01
PP
882 /* magical thingies */
883
e23d9e2f
CS
884 SvREFCNT_dec(PL_ofsgv); /* *, */
885 PL_ofsgv = NULL;
5f05dabc 886
7889fe52 887 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 888 PL_ors_sv = NULL;
8ebc5c01 889
3280af22 890 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 891 PL_rs = NULL;
dc92893f 892
d33b2eba 893 Safefree(PL_osname); /* $^O */
bd61b366 894 PL_osname = NULL;
5f05dabc 895
3280af22 896 SvREFCNT_dec(PL_statname);
a0714e2c
SS
897 PL_statname = NULL;
898 PL_statgv = NULL;
5f05dabc 899
8ebc5c01
PP
900 /* defgv, aka *_ should be taken care of elsewhere */
901
8ebc5c01 902 /* clean up after study() */
3280af22 903 SvREFCNT_dec(PL_lastscream);
a0714e2c 904 PL_lastscream = NULL;
3280af22
NIS
905 Safefree(PL_screamfirst);
906 PL_screamfirst = 0;
907 Safefree(PL_screamnext);
908 PL_screamnext = 0;
8ebc5c01 909
7d5ea4e7
GS
910 /* float buffer */
911 Safefree(PL_efloatbuf);
bd61b366 912 PL_efloatbuf = NULL;
7d5ea4e7
GS
913 PL_efloatsize = 0;
914
8ebc5c01 915 /* startup and shutdown function lists */
3280af22 916 SvREFCNT_dec(PL_beginav);
5a837c8f 917 SvREFCNT_dec(PL_beginav_save);
3280af22 918 SvREFCNT_dec(PL_endav);
7d30b5c4 919 SvREFCNT_dec(PL_checkav);
ece599bd 920 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
921 SvREFCNT_dec(PL_unitcheckav);
922 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 923 SvREFCNT_dec(PL_initav);
7d49f689
NC
924 PL_beginav = NULL;
925 PL_beginav_save = NULL;
926 PL_endav = NULL;
927 PL_checkav = NULL;
928 PL_checkav_save = NULL;
3c10abe3
AG
929 PL_unitcheckav = NULL;
930 PL_unitcheckav_save = NULL;
7d49f689 931 PL_initav = NULL;
5618dfe8 932
8ebc5c01 933 /* shortcuts just get cleared */
a0714e2c
SS
934 PL_envgv = NULL;
935 PL_incgv = NULL;
936 PL_hintgv = NULL;
937 PL_errgv = NULL;
938 PL_argvgv = NULL;
939 PL_argvoutgv = NULL;
940 PL_stdingv = NULL;
941 PL_stderrgv = NULL;
942 PL_last_in_gv = NULL;
943 PL_replgv = NULL;
944 PL_DBgv = NULL;
945 PL_DBline = NULL;
946 PL_DBsub = NULL;
947 PL_DBsingle = NULL;
948 PL_DBtrace = NULL;
949 PL_DBsignal = NULL;
601f1833 950 PL_DBcv = NULL;
7d49f689 951 PL_dbargs = NULL;
5c284bb0 952 PL_debstash = NULL;
8ebc5c01 953
7a1c5554 954 SvREFCNT_dec(PL_argvout_stack);
7d49f689 955 PL_argvout_stack = NULL;
8ebc5c01 956
5c831c24 957 SvREFCNT_dec(PL_modglobal);
5c284bb0 958 PL_modglobal = NULL;
5c831c24 959 SvREFCNT_dec(PL_preambleav);
7d49f689 960 PL_preambleav = NULL;
5c831c24 961 SvREFCNT_dec(PL_subname);
a0714e2c 962 PL_subname = NULL;
ca0c25f6 963#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 964 SvREFCNT_dec(PL_pidstatus);
5c284bb0 965 PL_pidstatus = NULL;
ca0c25f6 966#endif
5c831c24 967 SvREFCNT_dec(PL_toptarget);
a0714e2c 968 PL_toptarget = NULL;
5c831c24 969 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
970 PL_bodytarget = NULL;
971 PL_formtarget = NULL;
5c831c24 972
d33b2eba 973 /* free locale stuff */
b9582b6a 974#ifdef USE_LOCALE_COLLATE
d33b2eba 975 Safefree(PL_collation_name);
bd61b366 976 PL_collation_name = NULL;
b9582b6a 977#endif
d33b2eba 978
b9582b6a 979#ifdef USE_LOCALE_NUMERIC
d33b2eba 980 Safefree(PL_numeric_name);
bd61b366 981 PL_numeric_name = NULL;
a453c169 982 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 983 PL_numeric_radix_sv = NULL;
b9582b6a 984#endif
d33b2eba 985
5c831c24
GS
986 /* clear utf8 character classes */
987 SvREFCNT_dec(PL_utf8_alnum);
988 SvREFCNT_dec(PL_utf8_alnumc);
989 SvREFCNT_dec(PL_utf8_ascii);
990 SvREFCNT_dec(PL_utf8_alpha);
991 SvREFCNT_dec(PL_utf8_space);
992 SvREFCNT_dec(PL_utf8_cntrl);
993 SvREFCNT_dec(PL_utf8_graph);
994 SvREFCNT_dec(PL_utf8_digit);
995 SvREFCNT_dec(PL_utf8_upper);
996 SvREFCNT_dec(PL_utf8_lower);
997 SvREFCNT_dec(PL_utf8_print);
998 SvREFCNT_dec(PL_utf8_punct);
999 SvREFCNT_dec(PL_utf8_xdigit);
1000 SvREFCNT_dec(PL_utf8_mark);
1001 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1002 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1003 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1004 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1005 SvREFCNT_dec(PL_utf8_idstart);
1006 SvREFCNT_dec(PL_utf8_idcont);
a0714e2c
SS
1007 PL_utf8_alnum = NULL;
1008 PL_utf8_alnumc = NULL;
1009 PL_utf8_ascii = NULL;
1010 PL_utf8_alpha = NULL;
1011 PL_utf8_space = NULL;
1012 PL_utf8_cntrl = NULL;
1013 PL_utf8_graph = NULL;
1014 PL_utf8_digit = NULL;
1015 PL_utf8_upper = NULL;
1016 PL_utf8_lower = NULL;
1017 PL_utf8_print = NULL;
1018 PL_utf8_punct = NULL;
1019 PL_utf8_xdigit = NULL;
1020 PL_utf8_mark = NULL;
1021 PL_utf8_toupper = NULL;
1022 PL_utf8_totitle = NULL;
1023 PL_utf8_tolower = NULL;
1024 PL_utf8_tofold = NULL;
1025 PL_utf8_idstart = NULL;
1026 PL_utf8_idcont = NULL;
5c831c24 1027
971a9dd3 1028 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1029 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1030 PL_compiling.cop_warnings = NULL;
c28fe1ec
NC
1031 Perl_refcounted_he_free(aTHX_ PL_compiling.cop_hints_hash);
1032 PL_compiling.cop_hints_hash = NULL;
05ec9bb3
NIS
1033 CopFILE_free(&PL_compiling);
1034 CopSTASH_free(&PL_compiling);
5c831c24 1035
a0d0e21e 1036 /* Prepare to destruct main symbol table. */
5f05dabc 1037
3280af22
NIS
1038 hv = PL_defstash;
1039 PL_defstash = 0;
a0d0e21e 1040 SvREFCNT_dec(hv);
5c831c24 1041 SvREFCNT_dec(PL_curstname);
a0714e2c 1042 PL_curstname = NULL;
a0d0e21e 1043
5a844595
GS
1044 /* clear queued errors */
1045 SvREFCNT_dec(PL_errors);
a0714e2c 1046 PL_errors = NULL;
5a844595 1047
dd69841b
BB
1048 SvREFCNT_dec(PL_isarev);
1049
a0d0e21e 1050 FREETMPS;
0453d815 1051 if (destruct_level >= 2 && ckWARN_d(WARN_INTERNAL)) {
3280af22 1052 if (PL_scopestack_ix != 0)
9014280d 1053 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1054 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
3280af22
NIS
1055 (long)PL_scopestack_ix);
1056 if (PL_savestack_ix != 0)
9014280d 1057 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
0453d815 1058 "Unbalanced saves: %ld more saves than restores\n",
3280af22
NIS
1059 (long)PL_savestack_ix);
1060 if (PL_tmps_floor != -1)
9014280d 1061 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
3280af22 1062 (long)PL_tmps_floor + 1);
a0d0e21e 1063 if (cxstack_ix != -1)
9014280d 1064 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
ff0cee69 1065 (long)cxstack_ix + 1);
a0d0e21e 1066 }
8990e307
LW
1067
1068 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1069
1070 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1071 while (sv_clean_all() > 2)
5226ed68
JH
1072 ;
1073
d4777f27
GS
1074 AvREAL_off(PL_fdpid); /* no surviving entries */
1075 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1076 PL_fdpid = NULL;
d33b2eba 1077
6c644e78
GS
1078#ifdef HAVE_INTERP_INTERN
1079 sys_intern_clear();
1080#endif
1081
6e72f9df
PP
1082 /* Destruct the global string table. */
1083 {
1084 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1085 * so that sv_free() won't fail on them.
80459961
NC
1086 * Now that the global string table is using a single hunk of memory
1087 * for both HE and HEK, we either need to explicitly unshare it the
1088 * correct way, or actually free things here.
6e72f9df 1089 */
80459961
NC
1090 I32 riter = 0;
1091 const I32 max = HvMAX(PL_strtab);
c4420975 1092 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1093 HE *hent = array[0];
1094
6e72f9df 1095 for (;;) {
0453d815 1096 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1097 HE * const next = HeNEXT(hent);
9014280d 1098 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1099 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1100 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1101 Safefree(hent);
1102 hent = next;
6e72f9df
PP
1103 }
1104 if (!hent) {
1105 if (++riter > max)
1106 break;
1107 hent = array[riter];
1108 }
1109 }
80459961
NC
1110
1111 Safefree(array);
1112 HvARRAY(PL_strtab) = 0;
1113 HvTOTALKEYS(PL_strtab) = 0;
1114 HvFILL(PL_strtab) = 0;
6e72f9df 1115 }
3280af22 1116 SvREFCNT_dec(PL_strtab);
6e72f9df 1117
e652bb2f 1118#ifdef USE_ITHREADS
c21d1a0f 1119 /* free the pointer tables used for cloning */
a0739874 1120 ptr_table_free(PL_ptr_table);
bf9cdc68 1121 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1122#endif
a0739874 1123
d33b2eba
GS
1124 /* free special SVs */
1125
1126 SvREFCNT(&PL_sv_yes) = 0;
1127 sv_clear(&PL_sv_yes);
1128 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1129 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1130
1131 SvREFCNT(&PL_sv_no) = 0;
1132 sv_clear(&PL_sv_no);
1133 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1134 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1135
9f375a43
DM
1136 {
1137 int i;
1138 for (i=0; i<=2; i++) {
1139 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1140 sv_clear(PERL_DEBUG_PAD(i));
1141 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1142 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1143 }
1144 }
1145
0453d815 1146 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1147 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1148
eba0f806
DM
1149#ifdef DEBUG_LEAKING_SCALARS
1150 if (PL_sv_count != 0) {
1151 SV* sva;
1152 SV* sv;
1153 register SV* svend;
1154
ad64d0ec 1155 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1156 svend = &sva[SvREFCNT(sva)];
1157 for (sv = sva + 1; sv < svend; ++sv) {
1158 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1159 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1160 " flags=0x%"UVxf
fd0854ff
DM
1161 " refcnt=%"UVuf pTHX__FORMAT "\n"
1162 "\tallocated at %s:%d %s %s%s\n",
574b8821
NC
1163 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1164 pTHX__VALUE,
fd0854ff
DM
1165 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1166 sv->sv_debug_line,
1167 sv->sv_debug_inpad ? "for" : "by",
1168 sv->sv_debug_optype ?
1169 PL_op_name[sv->sv_debug_optype]: "(none)",
1170 sv->sv_debug_cloned ? " (cloned)" : ""
1171 );
2aa47728 1172#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1173 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1174#endif
eba0f806
DM
1175 }
1176 }
1177 }
1178 }
2aa47728
NC
1179#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1180 {
1181 int status;
1182 fd_set rset;
1183 /* Wait for up to 4 seconds for child to terminate.
1184 This seems to be the least effort way of timing out on reaping
1185 its exit status. */
1186 struct timeval waitfor = {4, 0};
41e4abd8 1187 int sock = PL_dumper_fd;
2aa47728
NC
1188
1189 shutdown(sock, 1);
1190 FD_ZERO(&rset);
1191 FD_SET(sock, &rset);
1192 select(sock + 1, &rset, NULL, NULL, &waitfor);
1193 waitpid(child, &status, WNOHANG);
1194 close(sock);
1195 }
1196#endif
eba0f806 1197#endif
77abb4c6
NC
1198#ifdef DEBUG_LEAKING_SCALARS_ABORT
1199 if (PL_sv_count)
1200 abort();
1201#endif
bf9cdc68 1202 PL_sv_count = 0;
eba0f806 1203
f1fac472
NC
1204#ifdef PERL_DEBUG_READONLY_OPS
1205 free(PL_slabs);
1206 PL_slabs = NULL;
1207 PL_slab_count = 0;
1208#endif
eba0f806 1209
56a2bab7 1210#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1211 /* No more IO - including error messages ! */
1212 PerlIO_cleanup(aTHX);
1213#endif
1214
9f4bd222 1215 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1216 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1217 for no arg - and will try and SvREFCNT_dec it.
1218 */
1219 SvREFCNT(&PL_sv_undef) = 0;
1220 SvREADONLY_off(&PL_sv_undef);
1221
3280af22 1222 Safefree(PL_origfilename);
bd61b366 1223 PL_origfilename = NULL;
3280af22 1224 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1225 PL_reg_start_tmp = (char**)NULL;
1226 PL_reg_start_tmpl = 0;
43c5f42d 1227 Safefree(PL_reg_curpm);
82ba1be6 1228 Safefree(PL_reg_poscache);
dd28f7bb 1229 free_tied_hv_pool();
3280af22 1230 Safefree(PL_op_mask);
cf36064f 1231 Safefree(PL_psig_ptr);
bf9cdc68 1232 PL_psig_ptr = (SV**)NULL;
cf36064f 1233 Safefree(PL_psig_name);
bf9cdc68 1234 PL_psig_name = (SV**)NULL;
2c2666fc 1235 Safefree(PL_bitcount);
bd61b366 1236 PL_bitcount = NULL;
ce08f86c 1237 Safefree(PL_psig_pend);
bf9cdc68 1238 PL_psig_pend = (int*)NULL;
a0714e2c 1239 PL_formfeed = NULL;
6e72f9df 1240 nuke_stacks();
bf9cdc68
RG
1241 PL_tainting = FALSE;
1242 PL_taint_warn = FALSE;
3280af22 1243 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1244 PL_debug = 0;
ac27b0f5 1245
a0d0e21e 1246 DEBUG_P(debprofdump());
d33b2eba 1247
e5dd39fc 1248#ifdef USE_REENTRANT_API
10bc17b6 1249 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1250#endif
1251
612f20c3
GS
1252 sv_free_arenas();
1253
5d9a96ca
DM
1254 while (PL_regmatch_slab) {
1255 regmatch_slab *s = PL_regmatch_slab;
1256 PL_regmatch_slab = PL_regmatch_slab->next;
1257 Safefree(s);
1258 }
1259
fc36a67e
PP
1260 /* As the absolutely last thing, free the non-arena SV for mess() */
1261
3280af22 1262 if (PL_mess_sv) {
f350b448
NC
1263 /* we know that type == SVt_PVMG */
1264
9c63abab 1265 /* it could have accumulated taint magic */
f350b448
NC
1266 MAGIC* mg;
1267 MAGIC* moremagic;
1268 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1269 moremagic = mg->mg_moremagic;
1270 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1271 && mg->mg_len >= 0)
1272 Safefree(mg->mg_ptr);
1273 Safefree(mg);
9c63abab 1274 }
f350b448 1275
fc36a67e 1276 /* we know that type >= SVt_PV */
8bd4d4c5 1277 SvPV_free(PL_mess_sv);
3280af22
NIS
1278 Safefree(SvANY(PL_mess_sv));
1279 Safefree(PL_mess_sv);
a0714e2c 1280 PL_mess_sv = NULL;
fc36a67e 1281 }
37038d91 1282 return STATUS_EXIT;
79072805
LW
1283}
1284
954c1994
GS
1285/*
1286=for apidoc perl_free
1287
1288Releases a Perl interpreter. See L<perlembed>.
1289
1290=cut
1291*/
1292
79072805 1293void
0cb96387 1294perl_free(pTHXx)
79072805 1295{
5174512c
NC
1296 dVAR;
1297
7918f24d
NC
1298 PERL_ARGS_ASSERT_PERL_FREE;
1299
c301d606
DM
1300 if (PL_veto_cleanup)
1301 return;
1302
7cb608b5 1303#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1304 {
1305 /*
1306 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1307 * value as we're probably hunting memory leaks then
1308 */
1309 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1310 if (!s || atoi(s) == 0) {
4fd0a9b8 1311 const U32 old_debug = PL_debug;
55ef9aae
MHM
1312 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1313 thread at thread exit. */
4fd0a9b8
NC
1314 if (DEBUG_m_TEST) {
1315 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1316 "free this thread's memory\n");
1317 PL_debug &= ~ DEBUG_m_FLAG;
1318 }
55ef9aae
MHM
1319 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1320 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1321 PL_debug = old_debug;
55ef9aae
MHM
1322 }
1323 }
7cb608b5
NC
1324#endif
1325
acfe0abc 1326#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1327# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1328 {
acfe0abc 1329# ifdef NETWARE
7af12a34 1330 void *host = nw_internal_host;
acfe0abc 1331# else
7af12a34 1332 void *host = w32_internal_host;
acfe0abc 1333# endif
7af12a34 1334 PerlMem_free(aTHXx);
acfe0abc 1335# ifdef NETWARE
7af12a34 1336 nw_delete_internal_host(host);
acfe0abc 1337# else
7af12a34 1338 win32_delete_internal_host(host);
acfe0abc 1339# endif
7af12a34 1340 }
1c0ca838
GS
1341# else
1342 PerlMem_free(aTHXx);
1343# endif
acfe0abc
GS
1344#else
1345 PerlMem_free(aTHXx);
76e3520e 1346#endif
79072805
LW
1347}
1348
b7f7fff6 1349#if defined(USE_ITHREADS)
aebd1ac7
GA
1350/* provide destructors to clean up the thread key when libperl is unloaded */
1351#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1352
826955bd 1353#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1354#pragma fini "perl_fini"
666ad1ec
GA
1355#elif defined(__sun) && !defined(__GNUC__)
1356#pragma fini (perl_fini)
aebd1ac7
GA
1357#endif
1358
0dbb1585
AL
1359static void
1360#if defined(__GNUC__)
1361__attribute__((destructor))
aebd1ac7 1362#endif
de009b76 1363perl_fini(void)
aebd1ac7 1364{
27da23d5 1365 dVAR;
c301d606 1366 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1367 FREE_THREAD_KEY;
1368}
1369
1370#endif /* WIN32 */
1371#endif /* THREADS */
1372
4b556e6c 1373void
864dbfa3 1374Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1375{
97aff369 1376 dVAR;
3280af22
NIS
1377 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1378 PL_exitlist[PL_exitlistlen].fn = fn;
1379 PL_exitlist[PL_exitlistlen].ptr = ptr;
1380 ++PL_exitlistlen;
4b556e6c
JD
1381}
1382
56cf6df8
RGS
1383#ifdef HAS_PROCSELFEXE
1384/* This is a function so that we don't hold on to MAXPATHLEN
1385 bytes of stack longer than necessary
1386 */
1387STATIC void
e1ec3a88 1388S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1389{
1390 char buf[MAXPATHLEN];
1391 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1392
1393 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1394 includes a spurious NUL which will cause $^X to fail in system
1395 or backticks (this will prevent extensions from being built and
1396 many tests from working). readlink is not meant to add a NUL.
1397 Normal readlink works fine.
1398 */
1399 if (len > 0 && buf[len-1] == '\0') {
1400 len--;
1401 }
1402
1403 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1404 returning the text "unknown" from the readlink rather than the path
1405 to the executable (or returning an error from the readlink). Any valid
1406 path has a '/' in it somewhere, so use that to validate the result.
1407 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1408 */
1409 if (len > 0 && memchr(buf, '/', len)) {
1410 sv_setpvn(sv,buf,len);
1411 }
1412 else {
1413 sv_setpv(sv,arg0);
1414 }
1415}
1416#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1417
1418STATIC void
1419S_set_caret_X(pTHX) {
97aff369 1420 dVAR;
fafc274c 1421 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1422 if (tmpgv) {
1423#ifdef HAS_PROCSELFEXE
1424 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1425#else
1426#ifdef OS2
c69033f2 1427 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1428#else
c69033f2 1429 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1430#endif
1431#endif
1432 }
1433}
1434
954c1994
GS
1435/*
1436=for apidoc perl_parse
1437
1438Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1439
1440=cut
1441*/
1442
79072805 1443int
0cb96387 1444perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1445{
27da23d5 1446 dVAR;
6224f72b 1447 I32 oldscope;
6224f72b 1448 int ret;
db36c5a1 1449 dJMPENV;
8d063cd8 1450
7918f24d
NC
1451 PERL_ARGS_ASSERT_PERL_PARSE;
1452#ifndef MULTIPLICITY
ed6c66dd 1453 PERL_UNUSED_ARG(my_perl);
7918f24d 1454#endif
9d4ba2ae 1455
b0891165
JH
1456#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1457 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1458 * This MUST be done before any hash stores or fetches take place.
008fb0c0
NC
1459 * If you set PL_rehash_seed (and assumedly also PL_rehash_seed_set)
1460 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1461 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1462 if (!PL_rehash_seed_set)
1463 PL_rehash_seed = get_hash_seed();
b0891165 1464 {
9d4ba2ae 1465 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1466
1b6737cc
AL
1467 if (s && (atoi(s) == 1))
1468 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1469 }
1470#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1471
3280af22 1472 PL_origargc = argc;
e2975953 1473 PL_origargv = argv;
a0d0e21e 1474
a2722ac9
GA
1475 if (PL_origalen != 0) {
1476 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1477 }
1478 else {
3cb9023d
JH
1479 /* Set PL_origalen be the sum of the contiguous argv[]
1480 * elements plus the size of the env in case that it is
e9137a8e 1481 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1482 * as the maximum modifiable length of $0. In the worst case
1483 * the area we are able to modify is limited to the size of
43c32782 1484 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1485 * --jhi */
e1ec3a88 1486 const char *s = NULL;
54bfe034 1487 int i;
1b6737cc 1488 const UV mask =
7d8e7db3 1489 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1490 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1491 const UV aligned =
43c32782
JH
1492 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1493
1494 /* See if all the arguments are contiguous in memory. Note
1495 * that 'contiguous' is a loose term because some platforms
1496 * align the argv[] and the envp[]. If the arguments look
1497 * like non-aligned, assume that they are 'strictly' or
1498 * 'traditionally' contiguous. If the arguments look like
1499 * aligned, we just check that they are within aligned
1500 * PTRSIZE bytes. As long as no system has something bizarre
1501 * like the argv[] interleaved with some other data, we are
1502 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1503 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1504 while (*s) s++;
1505 for (i = 1; i < PL_origargc; i++) {
1506 if ((PL_origargv[i] == s + 1
43c32782 1507#ifdef OS2
c8941eeb 1508 || PL_origargv[i] == s + 2
43c32782 1509#endif
c8941eeb
JH
1510 )
1511 ||
1512 (aligned &&
1513 (PL_origargv[i] > s &&
1514 PL_origargv[i] <=
1515 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1516 )
1517 {
1518 s = PL_origargv[i];
1519 while (*s) s++;
1520 }
1521 else
1522 break;
54bfe034 1523 }
54bfe034 1524 }
a4a109c2
JD
1525
1526#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1527 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1528 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1529 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1530 ||
1531 (aligned &&
1532 (PL_origenviron[0] > s &&
1533 PL_origenviron[0] <=
1534 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1535 )
1536 {
9d419b5f 1537#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1538 s = PL_origenviron[0];
1539 while (*s) s++;
1540#endif
bd61b366 1541 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1542 /* Force copy of environment. */
1543 for (i = 1; PL_origenviron[i]; i++) {
1544 if (PL_origenviron[i] == s + 1
1545 ||
1546 (aligned &&
1547 (PL_origenviron[i] > s &&
1548 PL_origenviron[i] <=
1549 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1550 )
1551 {
1552 s = PL_origenviron[i];
1553 while (*s) s++;
1554 }
1555 else
1556 break;
54bfe034 1557 }
43c32782 1558 }
54bfe034 1559 }
a4a109c2
JD
1560#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1561
2d2af554 1562 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1563 }
1564
3280af22 1565 if (PL_do_undump) {
a0d0e21e
LW
1566
1567 /* Come here if running an undumped a.out. */
1568
3280af22
NIS
1569 PL_origfilename = savepv(argv[0]);
1570 PL_do_undump = FALSE;
a0d0e21e 1571 cxstack_ix = -1; /* start label stack again */
748a9306 1572 init_ids();
b7975bdd
NC
1573 assert (!PL_tainted);
1574 TAINT;
1575 S_set_caret_X(aTHX);
1576 TAINT_NOT;
a0d0e21e
LW
1577 init_postdump_symbols(argc,argv,env);
1578 return 0;
1579 }
1580
3280af22 1581 if (PL_main_root) {
3280af22 1582 op_free(PL_main_root);
5f66b61c 1583 PL_main_root = NULL;
ff0cee69 1584 }
5f66b61c 1585 PL_main_start = NULL;
3280af22 1586 SvREFCNT_dec(PL_main_cv);
601f1833 1587 PL_main_cv = NULL;
79072805 1588
3280af22
NIS
1589 time(&PL_basetime);
1590 oldscope = PL_scopestack_ix;
599cee73 1591 PL_dowarn = G_WARN_OFF;
f86702cc 1592
14dd3ad8 1593 JMPENV_PUSH(ret);
6224f72b 1594 switch (ret) {
312caa8e 1595 case 0:
14dd3ad8 1596 parse_body(env,xsinit);
3c10abe3
AG
1597 if (PL_unitcheckav)
1598 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1599 if (PL_checkav)
1600 call_list(oldscope, PL_checkav);
14dd3ad8
GS
1601 ret = 0;
1602 break;
6224f72b
GS
1603 case 1:
1604 STATUS_ALL_FAILURE;
1605 /* FALL THROUGH */
1606 case 2:
1607 /* my_exit() was called */
3280af22 1608 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1609 LEAVE;
1610 FREETMPS;
3280af22 1611 PL_curstash = PL_defstash;
3c10abe3
AG
1612 if (PL_unitcheckav)
1613 call_list(oldscope, PL_unitcheckav);
7d30b5c4
GS
1614 if (PL_checkav)
1615 call_list(oldscope, PL_checkav);
37038d91 1616 ret = STATUS_EXIT;
14dd3ad8 1617 break;
6224f72b 1618 case 3:
bf49b057 1619 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1620 ret = 1;
1621 break;
6224f72b 1622 }
14dd3ad8
GS
1623 JMPENV_POP;
1624 return ret;
1625}
1626
e28f3139
NC
1627#define INCPUSH_ADD_SUB_DIRS 0x01
1628#define INCPUSH_ADD_OLD_VERS 0x02
a26c0e28 1629#define INCPUSH_NOT_BASEDIR 0x04
e28f3139
NC
1630#define INCPUSH_CAN_RELOCATE 0x08
1631#define INCPUSH_UNSHIFT 0x10
1632
312caa8e 1633STATIC void *
14dd3ad8 1634S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1635{
27da23d5 1636 dVAR;
2f9285f8 1637 PerlIO *rsfp;
312caa8e 1638 int argc = PL_origargc;
8f42b153 1639 char **argv = PL_origargv;
e1ec3a88 1640 const char *scriptname = NULL;
312caa8e 1641 VOL bool dosearch = FALSE;
312caa8e 1642 register SV *sv;
c7030b81 1643 register char c;
bd61b366 1644 const char *cddir = NULL;
ab019eaa 1645#ifdef USE_SITECUSTOMIZE
20ef40cf 1646 bool minus_f = FALSE;
ab019eaa 1647#endif
009d90df 1648 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1649 bool add_read_e_script = FALSE;
009d90df
DM
1650
1651 SvGROW(linestr_sv, 80);
76f68e9b 1652 sv_setpvs(linestr_sv,"");
312caa8e 1653
396482e1 1654 sv = newSVpvs(""); /* first used for -I flags */
6224f72b
GS
1655 SAVEFREESV(sv);
1656 init_main_stash();
54310121 1657
c7030b81
NC
1658 {
1659 const char *s;
6224f72b
GS
1660 for (argc--,argv++; argc > 0; argc--,argv++) {
1661 if (argv[0][0] != '-' || !argv[0][1])
1662 break;
6224f72b
GS
1663 s = argv[0]+1;
1664 reswitch:
47f56822 1665 switch ((c = *s)) {
729a02f2 1666 case 'C':
1d5472a9
GS
1667#ifndef PERL_STRICT_CR
1668 case '\r':
1669#endif
6224f72b
GS
1670 case ' ':
1671 case '0':
1672 case 'F':
1673 case 'a':
1674 case 'c':
1675 case 'd':
1676 case 'D':
1677 case 'h':
1678 case 'i':
1679 case 'l':
1680 case 'M':
1681 case 'm':
1682 case 'n':
1683 case 'p':
1684 case 's':
1685 case 'u':
1686 case 'U':
1687 case 'v':
599cee73
PM
1688 case 'W':
1689 case 'X':
6224f72b 1690 case 'w':
97bd5664 1691 if ((s = moreswitches(s)))
6224f72b
GS
1692 goto reswitch;
1693 break;
33b78306 1694
1dbad523 1695 case 't':
22f7c9c9 1696 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1697 if( !PL_tainting ) {
1698 PL_taint_warn = TRUE;
1699 PL_tainting = TRUE;
1700 }
1701 s++;
1702 goto reswitch;
6224f72b 1703 case 'T':
22f7c9c9 1704 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1705 PL_tainting = TRUE;
317ea90d 1706 PL_taint_warn = FALSE;
6224f72b
GS
1707 s++;
1708 goto reswitch;
f86702cc 1709
bc9b29db
RH
1710 case 'E':
1711 PL_minus_E = TRUE;
1712 /* FALL THROUGH */
6224f72b 1713 case 'e':
bf4acbe4
GS
1714#ifdef MACOS_TRADITIONAL
1715 /* ignore -e for Dev:Pseudo argument */
1716 if (argv[1] && !strcmp(argv[1], "Dev:Pseudo"))
e55ac0fa 1717 break;
bf4acbe4 1718#endif
f20b2998 1719 forbid_setid('e', FALSE);
3280af22 1720 if (!PL_e_script) {
396482e1 1721 PL_e_script = newSVpvs("");
5486870f 1722 add_read_e_script = TRUE;
6224f72b
GS
1723 }
1724 if (*++s)
3280af22 1725 sv_catpv(PL_e_script, s);
6224f72b 1726 else if (argv[1]) {
3280af22 1727 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1728 argc--,argv++;
1729 }
1730 else
47f56822 1731 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1732 sv_catpvs(PL_e_script, "\n");
6224f72b 1733 break;
afe37c7d 1734
20ef40cf 1735 case 'f':
f5542d3a 1736#ifdef USE_SITECUSTOMIZE
20ef40cf 1737 minus_f = TRUE;
f5542d3a 1738#endif
20ef40cf
GA
1739 s++;
1740 goto reswitch;
1741
6224f72b 1742 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1743 forbid_setid('I', FALSE);
bd61b366 1744 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1745 argc--,argv++;
1746 }
6224f72b 1747 if (s && *s) {
0df16ed7 1748 STRLEN len = strlen(s);
55b4bc1c 1749 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
396482e1 1750 sv_catpvs(sv, "-I");
55b4bc1c 1751 sv_catpvn(sv, s, len);
396482e1 1752 sv_catpvs(sv, " ");
0df16ed7
GS
1753 }
1754 else
a67e862a 1755 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1756 break;
6224f72b 1757 case 'S':
f20b2998 1758 forbid_setid('S', FALSE);
6224f72b
GS
1759 dosearch = TRUE;
1760 s++;
1761 goto reswitch;
1762 case 'V':
7edfd0ef
NC
1763 {
1764 SV *opts_prog;
1765
29a861e7 1766 Perl_av_create_and_push(aTHX_ &PL_preambleav, newSVpvs("use Config;"));
7edfd0ef 1767 if (*++s != ':') {
389d73ad
NC
1768 /* Can't do newSVpvs() as that would involve pre-processor
1769 condititionals inside a macro expansion. */
1770 opts_prog = Perl_newSVpv(aTHX_ "$_ = join ' ', sort qw("
6224f72b 1771# ifdef DEBUGGING
e2e4dbf1 1772 " DEBUGGING"
6224f72b 1773# endif
3bcf5ed8
SP
1774# ifdef NO_MATHOMS
1775 " NO_MATHOMS"
1776# endif
85e1fcb9 1777# ifdef PERL_DONT_CREATE_GVSV
e2e4dbf1 1778 " PERL_DONT_CREATE_GVSV"
85e1fcb9 1779# endif
85e1fcb9 1780# ifdef PERL_MALLOC_WRAP
e2e4dbf1 1781 " PERL_MALLOC_WRAP"
85e1fcb9 1782# endif
4724db38
NC
1783# ifdef PERL_MEM_LOG
1784 " PERL_MEM_LOG"
1785# endif
1786# ifdef PERL_MEM_LOG_ENV
1787 " PERL_MEM_LOG_ENV"
1788# endif
1789# ifdef PERL_MEM_LOG_ENV_FD
1790 " PERL_MEM_LOG_ENV_FD"
1791# endif
1792# ifdef PERL_MEM_LOG_STDERR
1793 " PERL_MEM_LOG_STDERR"
1794# endif
1795# ifdef PERL_MEM_LOG_TIMESTAMP
1796 " PERL_MEM_LOG_TIMESTAMP"
1797# endif
1be1b388
MB
1798# ifdef PERL_USE_DEVEL
1799 " PERL_USE_DEVEL"
1800# endif
417cd4a8
SP
1801# ifdef PERL_USE_SAFE_PUTENV
1802 " PERL_USE_SAFE_PUTENV"
1803# endif
20ef40cf 1804# ifdef USE_SITECUSTOMIZE
e2e4dbf1 1805 " USE_SITECUSTOMIZE"
20ef40cf 1806# endif
e187df3b
NC
1807# ifdef USE_FAST_STDIO
1808 " USE_FAST_STDIO"
1809# endif
389d73ad 1810 , 0);
efcaa95b 1811
b75885fd 1812 sv_catpv(opts_prog, PL_bincompat_options);
389d73ad
NC
1813 /* Terminate the qw(, and then wrap at 76 columns. */
1814 sv_catpvs(opts_prog, "); s/(?=.{53})(.{1,53}) /$1\\n /mg;print Config::myconfig(),");
1815#ifdef VMS
1816 sv_catpvs(opts_prog,"\"\\nCharacteristics of this PERLSHR image: \\n");
1817#else
1818 sv_catpvs(opts_prog,"\"\\nCharacteristics of this binary (from libperl): \\n");
1819#endif
389d73ad 1820 sv_catpvs(opts_prog," Compile-time options: $_\\n\",");
b363f7ed 1821
6224f72b 1822#if defined(LOCAL_PATCH_COUNT)
7edfd0ef
NC
1823 if (LOCAL_PATCH_COUNT > 0) {
1824 int i;
396482e1 1825 sv_catpvs(opts_prog,
7edfd0ef
NC
1826 "\" Locally applied patches:\\n\",");
1827 for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
1828 if (PL_localpatches[i])
46807d8e
YO
1829 Perl_sv_catpvf(aTHX_ opts_prog,"q%c\t%s\n%c,",
1830 0, PL_localpatches[i], 0);
7edfd0ef 1831 }
6224f72b 1832 }
6224f72b 1833#endif
7edfd0ef 1834 Perl_sv_catpvf(aTHX_ opts_prog,
758ce194 1835 "\" Built under %s\\n",OSNAME);
6224f72b
GS
1836#ifdef __DATE__
1837# ifdef __TIME__
895aa832
NC
1838 sv_catpvs(opts_prog,
1839 " Compiled at " __DATE__ " " __TIME__ "\\n\"");
6224f72b 1840# else
895aa832 1841 sv_catpvs(opts_prog, " Compiled on " __DATE__ "\\n\"");
6224f72b
GS
1842# endif
1843#endif
396482e1 1844 sv_catpvs(opts_prog, "; $\"=\"\\n \"; "
7edfd0ef
NC
1845 "@env = map { \"$_=\\\"$ENV{$_}\\\"\" } "
1846 "sort grep {/^PERL/} keys %ENV; ");
69fcd688 1847#ifdef __CYGWIN__
396482e1 1848 sv_catpvs(opts_prog,
7edfd0ef 1849 "push @env, \"CYGWIN=\\\"$ENV{CYGWIN}\\\"\";");
69fcd688 1850#endif
396482e1 1851 sv_catpvs(opts_prog,
7edfd0ef
NC
1852 "print \" \\%ENV:\\n @env\\n\" if @env;"
1853 "print \" \\@INC:\\n @INC\\n\";");
1854 }
1855 else {
1856 ++s;
1857 opts_prog = Perl_newSVpvf(aTHX_
1858 "Config::config_vars(qw%c%s%c)",
1859 0, s, 0);
1860 s += strlen(s);
1861 }
1862 av_push(PL_preambleav, opts_prog);
1863 /* don't look for script or read stdin */
1864 scriptname = BIT_BUCKET;
1865 goto reswitch;
6224f72b 1866 }
6224f72b 1867 case 'x':
3280af22 1868 PL_doextract = TRUE;
6224f72b 1869 s++;
304334da 1870 if (*s)
f4c556ac 1871 cddir = s;
6224f72b
GS
1872 break;
1873 case 0:
1874 break;
1875 case '-':
1876 if (!*++s || isSPACE(*s)) {
1877 argc--,argv++;
1878 goto switch_end;
1879 }
1880 /* catch use of gnu style long options */
1881 if (strEQ(s, "version")) {
dd374669 1882 s = (char *)"v";
6224f72b
GS
1883 goto reswitch;
1884 }
1885 if (strEQ(s, "help")) {
dd374669 1886 s = (char *)"h";
6224f72b
GS
1887 goto reswitch;
1888 }
1889 s--;
1890 /* FALL THROUGH */
1891 default:
cea2e8a9 1892 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1893 }
1894 }
c7030b81
NC
1895 }
1896
6224f72b 1897 switch_end:
54310121 1898
c7030b81
NC
1899 {
1900 char *s;
1901
f675dbe5
CB
1902 if (
1903#ifndef SECURE_INTERNAL_GETENV
1904 !PL_tainting &&
1905#endif
cf756827 1906 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1907 {
74288ac8
GS
1908 while (isSPACE(*s))
1909 s++;
317ea90d 1910 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1911 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1912 PL_tainting = TRUE;
317ea90d
MS
1913 PL_taint_warn = FALSE;
1914 }
74288ac8 1915 else {
bd61b366 1916 char *popt_copy = NULL;
74288ac8 1917 while (s && *s) {
54913509 1918 const char *d;
74288ac8
GS
1919 while (isSPACE(*s))
1920 s++;
1921 if (*s == '-') {
1922 s++;
1923 if (isSPACE(*s))
1924 continue;
1925 }
4ea8f8fb 1926 d = s;
74288ac8
GS
1927 if (!*s)
1928 break;
f0d36289 1929 if (!strchr("CDIMUdmtw", *s))
cea2e8a9 1930 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1931 while (++s && *s) {
1932 if (isSPACE(*s)) {
cf756827 1933 if (!popt_copy) {
bfa6c418
NC
1934 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1935 s = popt_copy + (s - d);
1936 d = popt_copy;
cf756827 1937 }
4ea8f8fb
MS
1938 *s++ = '\0';
1939 break;
1940 }
1941 }
1c4db469 1942 if (*d == 't') {
317ea90d
MS
1943 if( !PL_tainting ) {
1944 PL_taint_warn = TRUE;
1945 PL_tainting = TRUE;
1946 }
1c4db469 1947 } else {
97bd5664 1948 moreswitches(d);
1c4db469 1949 }
6224f72b 1950 }
6224f72b
GS
1951 }
1952 }
c7030b81 1953 }
a0d0e21e 1954
20ef40cf
GA
1955#ifdef USE_SITECUSTOMIZE
1956 if (!minus_f) {
29a861e7
NC
1957 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1958 Perl_newSVpvf(aTHX_ "BEGIN { do '%s/sitecustomize.pl' }", SITELIB_EXP));
20ef40cf
GA
1959 }
1960#endif
1961
6224f72b
GS
1962 if (!scriptname)
1963 scriptname = argv[0];
3280af22 1964 if (PL_e_script) {
6224f72b
GS
1965 argc++,argv--;
1966 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
1967 }
bd61b366 1968 else if (scriptname == NULL) {
6224f72b
GS
1969#ifdef MSDOS
1970 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 1971 moreswitches("h");
6224f72b
GS
1972#endif
1973 scriptname = "-";
1974 }
1975
b7975bdd
NC
1976 /* Set $^X early so that it can be used for relocatable paths in @INC */
1977 assert (!PL_tainted);
1978 TAINT;
1979 S_set_caret_X(aTHX);
1980 TAINT_NOT;
2cace6ac 1981 init_perllib();
6224f72b 1982
a52eba0e 1983 {
f20b2998 1984 bool suidscript = FALSE;
829372d3 1985
cc69b689 1986 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 1987
2f9285f8 1988 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 1989 linestr_sv, rsfp);
6224f72b 1990
64ca3a65 1991#ifndef PERL_MICRO
a52eba0e
NC
1992# if defined(SIGCHLD) || defined(SIGCLD)
1993 {
1994# ifndef SIGCHLD
1995# define SIGCHLD SIGCLD
1996# endif
1997 Sighandler_t sigstate = rsignal_state(SIGCHLD);
1998 if (sigstate == (Sighandler_t) SIG_IGN) {
1999 if (ckWARN(WARN_SIGNAL))
2000 Perl_warner(aTHX_ packWARN(WARN_SIGNAL),
2001 "Can't ignore signal CHLD, forcing to default");
2002 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2003 }
0b5b802d 2004 }
a52eba0e 2005# endif
64ca3a65 2006#endif
0b5b802d 2007
a52eba0e 2008 if (PL_doextract
bf4acbe4 2009#ifdef MACOS_TRADITIONAL
a52eba0e 2010 || gMacPerl_AlwaysExtract
bf4acbe4 2011#endif
a52eba0e 2012 ) {
faef540c 2013
f20b2998 2014 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2015 setuid scripts. */
2016 forbid_setid('x', suidscript);
f20b2998 2017 /* Hence you can't get here if suidscript is true */
faef540c 2018
2f9285f8 2019 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2020 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2021 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2022 }
f4c556ac 2023 }
6224f72b 2024
ea726b52 2025 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2026 CvUNIQUE_on(PL_compcv);
2027
dd2155a4 2028 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2029
dd69841b
BB
2030 PL_isarev = newHV();
2031
0c4f7ff0 2032 boot_core_PerlIO();
6224f72b 2033 boot_core_UNIVERSAL();
09bef843 2034 boot_core_xsutils();
e1a479c5 2035 boot_core_mro();
6224f72b
GS
2036
2037 if (xsinit)
acfe0abc 2038 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2039#ifndef PERL_MICRO
d0d72822 2040#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2041 init_os_extras();
6224f72b 2042#endif
64ca3a65 2043#endif
6224f72b 2044
29209bc5 2045#ifdef USE_SOCKS
1b9c9cf5
DH
2046# ifdef HAS_SOCKS5_INIT
2047 socks5_init(argv[0]);
2048# else
29209bc5 2049 SOCKSinit(argv[0]);
1b9c9cf5 2050# endif
ac27b0f5 2051#endif
29209bc5 2052
6224f72b
GS
2053 init_predump_symbols();
2054 /* init_postdump_symbols not currently designed to be called */
2055 /* more than once (ENV isn't cleared first, for example) */
2056 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2057 if (!PL_do_undump)
6224f72b
GS
2058 init_postdump_symbols(argc,argv,env);
2059
27da23d5
JH
2060 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2061 * or explicitly in some platforms.
085a54d9 2062 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2063 * look like the user wants to use UTF-8. */
a0fd4948 2064#if defined(__SYMBIAN32__)
27da23d5
JH
2065 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2066#endif
06e66572
JH
2067 if (PL_unicode) {
2068 /* Requires init_predump_symbols(). */
a05d7ebb 2069 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2070 IO* io;
2071 PerlIO* fp;
2072 SV* sv;
2073
a05d7ebb 2074 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2075 * and the default open disciplines. */
a05d7ebb
JH
2076 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2077 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2078 (fp = IoIFP(io)))
2079 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2080 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2081 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2082 (fp = IoOFP(io)))
2083 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2084 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2085 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2086 (fp = IoOFP(io)))
2087 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2088 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2089 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2090 SVt_PV)))) {
a05d7ebb
JH
2091 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2092 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2093 if (in) {
2094 if (out)
76f68e9b 2095 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2096 else
76f68e9b 2097 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2098 }
2099 else if (out)
76f68e9b 2100 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2101 SvSETMAGIC(sv);
2102 }
b310b053
JH
2103 }
2104 }
2105
c7030b81
NC
2106 {
2107 const char *s;
4ffa73a3
JH
2108 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2109 if (strEQ(s, "unsafe"))
2110 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2111 else if (strEQ(s, "safe"))
2112 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2113 else
2114 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2115 }
c7030b81 2116 }
4ffa73a3 2117
81d86705 2118#ifdef PERL_MAD
c7030b81
NC
2119 {
2120 const char *s;
81d86705
NC
2121 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2122 PL_madskills = 1;
2123 PL_minus_c = 1;
2124 if (!s || !s[0])
2125 PL_xmlfp = PerlIO_stdout();
2126 else {
2127 PL_xmlfp = PerlIO_open(s, "w");
2128 if (!PL_xmlfp)
2129 Perl_croak(aTHX_ "Can't open %s", s);
2130 }
1a9a51d4 2131 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2132 }
c7030b81
NC
2133 }
2134
2135 {
2136 const char *s;
81d86705
NC
2137 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2138 PL_madskills = atoi(s);
1a9a51d4 2139 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2140 }
c7030b81 2141 }
81d86705
NC
2142#endif
2143
5486870f 2144 lex_start(linestr_sv, rsfp, TRUE);
219f7226 2145 PL_subname = newSVpvs("main");
6224f72b 2146
5486870f
DM
2147 if (add_read_e_script)
2148 filter_add(read_e_script, NULL);
2149
6224f72b
GS
2150 /* now parse the script */
2151
93189314 2152 SETERRNO(0,SS_NORMAL);
bf4acbe4 2153#ifdef MACOS_TRADITIONAL
13765c85 2154 if (gMacPerl_SyntaxError = (yyparse() || PL_parser->error_count)) {
bf4acbe4
GS
2155 if (PL_minus_c)
2156 Perl_croak(aTHX_ "%s had compilation errors.\n", MacPerl_MPWFileName(PL_origfilename));
2157 else {
2158 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
2159 MacPerl_MPWFileName(PL_origfilename));
2160 }
2161 }
2162#else
13765c85 2163 if (yyparse() || PL_parser->error_count) {
3280af22 2164 if (PL_minus_c)
cea2e8a9 2165 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2166 else {
cea2e8a9 2167 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2168 PL_origfilename);
6224f72b
GS
2169 }
2170 }
bf4acbe4 2171#endif
57843af0 2172 CopLINE_set(PL_curcop, 0);
3280af22 2173 PL_curstash = PL_defstash;
3280af22
NIS
2174 if (PL_e_script) {
2175 SvREFCNT_dec(PL_e_script);
a0714e2c 2176 PL_e_script = NULL;
6224f72b
GS
2177 }
2178
3280af22 2179 if (PL_do_undump)
6224f72b
GS
2180 my_unexec();
2181
57843af0
GS
2182 if (isWARN_ONCE) {
2183 SAVECOPFILE(PL_curcop);
2184 SAVECOPLINE(PL_curcop);
3280af22 2185 gv_check(PL_defstash);
57843af0 2186 }
6224f72b
GS
2187
2188 LEAVE;
2189 FREETMPS;
2190
2191#ifdef MYMALLOC
f6a607bc
RGS
2192 {
2193 const char *s;
6224f72b
GS
2194 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2195 dump_mstats("after compilation:");
f6a607bc 2196 }
6224f72b
GS
2197#endif
2198
2199 ENTER;
3280af22 2200 PL_restartop = 0;
312caa8e 2201 return NULL;
6224f72b
GS
2202}
2203
954c1994
GS
2204/*
2205=for apidoc perl_run
2206
2207Tells a Perl interpreter to run. See L<perlembed>.
2208
2209=cut
2210*/
2211
6224f72b 2212int
0cb96387 2213perl_run(pTHXx)
6224f72b 2214{
97aff369 2215 dVAR;
6224f72b 2216 I32 oldscope;
14dd3ad8 2217 int ret = 0;
db36c5a1 2218 dJMPENV;
6224f72b 2219
7918f24d
NC
2220 PERL_ARGS_ASSERT_PERL_RUN;
2221#ifndef MULTIPLICITY
ed6c66dd 2222 PERL_UNUSED_ARG(my_perl);
7918f24d 2223#endif
9d4ba2ae 2224
3280af22 2225 oldscope = PL_scopestack_ix;
96e176bf
CL
2226#ifdef VMS
2227 VMSISH_HUSHED = 0;
2228#endif
6224f72b 2229
14dd3ad8 2230 JMPENV_PUSH(ret);
6224f72b
GS
2231 switch (ret) {
2232 case 1:
2233 cxstack_ix = -1; /* start context stack again */
312caa8e 2234 goto redo_body;
14dd3ad8 2235 case 0: /* normal completion */
14dd3ad8
GS
2236 redo_body:
2237 run_body(oldscope);
14dd3ad8
GS
2238 /* FALL THROUGH */
2239 case 2: /* my_exit() */
3280af22 2240 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2241 LEAVE;
2242 FREETMPS;
3280af22 2243 PL_curstash = PL_defstash;
3a1ee7e8 2244 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
31d77e54
AB
2245 PL_endav && !PL_minus_c)
2246 call_list(oldscope, PL_endav);
6224f72b
GS
2247#ifdef MYMALLOC
2248 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2249 dump_mstats("after execution: ");
2250#endif
37038d91 2251 ret = STATUS_EXIT;
14dd3ad8 2252 break;
6224f72b 2253 case 3:
312caa8e
CS
2254 if (PL_restartop) {
2255 POPSTACK_TO(PL_mainstack);
2256 goto redo_body;
6224f72b 2257 }
bf49b057 2258 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2259 FREETMPS;
14dd3ad8
GS
2260 ret = 1;
2261 break;
6224f72b
GS
2262 }
2263
14dd3ad8
GS
2264 JMPENV_POP;
2265 return ret;
312caa8e
CS
2266}
2267
dd374669 2268STATIC void
14dd3ad8
GS
2269S_run_body(pTHX_ I32 oldscope)
2270{
97aff369 2271 dVAR;
6224f72b 2272 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2273 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2274
3280af22 2275 if (!PL_restartop) {
81d86705
NC
2276#ifdef PERL_MAD
2277 if (PL_xmlfp) {
2278 xmldump_all();
2279 exit(0); /* less likely to core dump than my_exit(0) */
2280 }
2281#endif
6224f72b 2282 DEBUG_x(dump_all());
cf2782cd 2283#ifdef DEBUGGING
ecae49c0
NC
2284 if (!DEBUG_q_TEST)
2285 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2286#endif
6224f72b 2287
3280af22 2288 if (PL_minus_c) {
bf4acbe4 2289#ifdef MACOS_TRADITIONAL
e69a2255
JH
2290 PerlIO_printf(Perl_error_log, "%s%s syntax OK\n",
2291 (gMacPerl_ErrorFormat ? "# " : ""),
2292 MacPerl_MPWFileName(PL_origfilename));
bf4acbe4 2293#else
bf49b057 2294 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
bf4acbe4 2295#endif
6224f72b
GS
2296 my_exit(0);
2297 }
3280af22 2298 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2299 sv_setiv(PL_DBsingle, 1);
3280af22
NIS
2300 if (PL_initav)
2301 call_list(oldscope, PL_initav);
f1fac472
NC
2302#ifdef PERL_DEBUG_READONLY_OPS
2303 Perl_pending_Slabs_to_ro(aTHX);
2304#endif
6224f72b
GS
2305 }
2306
2307 /* do it */
2308
3280af22 2309 if (PL_restartop) {
533c011a 2310 PL_op = PL_restartop;
3280af22 2311 PL_restartop = 0;
cea2e8a9 2312 CALLRUNOPS(aTHX);
6224f72b 2313 }
3280af22
NIS
2314 else if (PL_main_start) {
2315 CvDEPTH(PL_main_cv) = 1;
533c011a 2316 PL_op = PL_main_start;
cea2e8a9 2317 CALLRUNOPS(aTHX);
6224f72b 2318 }
f6b3007c
JH
2319 my_exit(0);
2320 /* NOTREACHED */
6224f72b
GS
2321}
2322
954c1994 2323/*
ccfc67b7
JH
2324=head1 SV Manipulation Functions
2325
954c1994
GS
2326=for apidoc p||get_sv
2327
64ace3f8
NC
2328Returns the SV of the specified Perl scalar. C<flags> are passed to
2329C<gv_fetchpv>. If C<GV_ADD> is set and the
2330Perl variable does not exist then it will be created. If C<flags> is zero
2331and the variable does not exist then NULL is returned.
954c1994
GS
2332
2333=cut
2334*/
2335
6224f72b 2336SV*
64ace3f8 2337Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2338{
2339 GV *gv;
7918f24d
NC
2340
2341 PERL_ARGS_ASSERT_GET_SV;
2342
64ace3f8 2343 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2344 if (gv)
2345 return GvSV(gv);
a0714e2c 2346 return NULL;
6224f72b
GS
2347}
2348
954c1994 2349/*
ccfc67b7
JH
2350=head1 Array Manipulation Functions
2351
954c1994
GS
2352=for apidoc p||get_av
2353
cbfd0a87
NC
2354Returns the AV of the specified Perl array. C<flags> are passed to
2355C<gv_fetchpv>. If C<GV_ADD> is set and the
2356Perl variable does not exist then it will be created. If C<flags> is zero
2357and the variable does not exist then NULL is returned.
954c1994
GS
2358
2359=cut
2360*/
2361
6224f72b 2362AV*
cbfd0a87 2363Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2364{
cbfd0a87 2365 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2366
2367 PERL_ARGS_ASSERT_GET_AV;
2368
cbfd0a87 2369 if (flags)
6224f72b
GS
2370 return GvAVn(gv);
2371 if (gv)
2372 return GvAV(gv);
7d49f689 2373 return NULL;
6224f72b
GS
2374}
2375
954c1994 2376/*
ccfc67b7
JH
2377=head1 Hash Manipulation Functions
2378
954c1994
GS
2379=for apidoc p||get_hv
2380
6673a63c
NC
2381Returns the HV of the specified Perl hash. C<flags> are passed to
2382C<gv_fetchpv>. If C<GV_ADD> is set and the
2383Perl variable does not exist then it will be created. If C<flags> is zero
2384and the variable does not exist then NULL is returned.
954c1994
GS
2385
2386=cut
2387*/
2388
6224f72b 2389HV*
6673a63c 2390Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2391{
6673a63c 2392 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2393
2394 PERL_ARGS_ASSERT_GET_HV;
2395
6673a63c 2396 if (flags)
a0d0e21e
LW
2397 return GvHVn(gv);
2398 if (gv)
2399 return GvHV(gv);
5c284bb0 2400 return NULL;
a0d0e21e
LW
2401}
2402
954c1994 2403/*
ccfc67b7
JH
2404=head1 CV Manipulation Functions
2405
780a5241
NC
2406=for apidoc p||get_cvn_flags
2407
2408Returns the CV of the specified Perl subroutine. C<flags> are passed to
2409C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2410exist then it will be declared (which has the same effect as saying
2411C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2412then NULL is returned.
2413
954c1994
GS
2414=for apidoc p||get_cv
2415
780a5241 2416Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2417
2418=cut
2419*/
2420
a0d0e21e 2421CV*
780a5241 2422Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2423{
780a5241 2424 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2425 /* XXX this is probably not what they think they're getting.
2426 * It has the same effect as "sub name;", i.e. just a forward
2427 * declaration! */
7918f24d
NC
2428
2429 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2430
780a5241 2431 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2432 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2433 return newSUB(start_subparse(FALSE, 0),
780a5241 2434 newSVOP(OP_CONST, 0, sv),
5f66b61c 2435 NULL, NULL);
780a5241 2436 }
a0d0e21e 2437 if (gv)
8ebc5c01 2438 return GvCVu(gv);
601f1833 2439 return NULL;
a0d0e21e
LW
2440}
2441
2c67934f
NC
2442/* Nothing in core calls this now, but we can't replace it with a macro and
2443 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2444CV*
2445Perl_get_cv(pTHX_ const char *name, I32 flags)
2446{
7918f24d
NC
2447 PERL_ARGS_ASSERT_GET_CV;
2448
780a5241
NC
2449 return get_cvn_flags(name, strlen(name), flags);
2450}
2451
79072805
LW
2452/* Be sure to refetch the stack pointer after calling these routines. */
2453
954c1994 2454/*
ccfc67b7
JH
2455
2456=head1 Callback Functions
2457
954c1994
GS
2458=for apidoc p||call_argv
2459
2460Performs a callback to the specified Perl sub. See L<perlcall>.
2461
2462=cut
2463*/
2464
a0d0e21e 2465I32
8f42b153 2466Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2467
8ac85365
NIS
2468 /* See G_* flags in cop.h */
2469 /* null terminated arg list */
8990e307 2470{
97aff369 2471 dVAR;
a0d0e21e 2472 dSP;
8990e307 2473
7918f24d
NC
2474 PERL_ARGS_ASSERT_CALL_ARGV;
2475
924508f0 2476 PUSHMARK(SP);
a0d0e21e 2477 if (argv) {
8990e307 2478 while (*argv) {
6e449a3a 2479 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2480 argv++;
2481 }
a0d0e21e 2482 PUTBACK;
8990e307 2483 }
864dbfa3 2484 return call_pv(sub_name, flags);
8990e307
LW
2485}
2486
954c1994
GS
2487/*
2488=for apidoc p||call_pv
2489
2490Performs a callback to the specified Perl sub. See L<perlcall>.
2491
2492=cut
2493*/
2494
a0d0e21e 2495I32
864dbfa3 2496Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2497 /* name of the subroutine */
2498 /* See G_* flags in cop.h */
a0d0e21e 2499{
7918f24d
NC
2500 PERL_ARGS_ASSERT_CALL_PV;
2501
0da0e728 2502 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2503}
2504
954c1994
GS
2505/*
2506=for apidoc p||call_method
2507
2508Performs a callback to the specified Perl method. The blessed object must
2509be on the stack. See L<perlcall>.
2510
2511=cut
2512*/
2513
a0d0e21e 2514I32
864dbfa3 2515Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2516 /* name of the subroutine */
2517 /* See G_* flags in cop.h */
a0d0e21e 2518{
7918f24d
NC
2519 PERL_ARGS_ASSERT_CALL_METHOD;
2520
968b3946 2521 return call_sv(sv_2mortal(newSVpv(methname,0)), flags | G_METHOD);
a0d0e21e
LW
2522}
2523
2524/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2525/*
2526=for apidoc p||call_sv
2527
2528Performs a callback to the Perl sub whose name is in the SV. See
2529L<perlcall>.
2530
2531=cut
2532*/
2533
a0d0e21e 2534I32
001d637e 2535Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2536 /* See G_* flags in cop.h */
a0d0e21e 2537{
27da23d5 2538 dVAR; dSP;
a0d0e21e 2539 LOGOP myop; /* fake syntax tree node */
968b3946 2540 UNOP method_op;
aa689395 2541 I32 oldmark;
8ea43dc8 2542 VOL I32 retval = 0;
a0d0e21e 2543 I32 oldscope;
54310121 2544 bool oldcatch = CATCH_GET;
6224f72b 2545 int ret;
c4420975 2546 OP* const oldop = PL_op;
db36c5a1 2547 dJMPENV;
1e422769 2548
7918f24d
NC
2549 PERL_ARGS_ASSERT_CALL_SV;
2550
a0d0e21e
LW
2551 if (flags & G_DISCARD) {
2552 ENTER;
2553 SAVETMPS;
2554 }
2f8edad0
NC
2555 if (!(flags & G_WANT)) {
2556 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2557 */
2558 flags |= G_SCALAR;
2559 }
a0d0e21e 2560
aa689395 2561 Zero(&myop, 1, LOGOP);
5f66b61c 2562 myop.op_next = NULL;
f51d4af5 2563 if (!(flags & G_NOARGS))
aa689395 2564 myop.op_flags |= OPf_STACKED;
4f911530 2565 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2566 SAVEOP();
533c011a 2567 PL_op = (OP*)&myop;
aa689395 2568
3280af22
NIS
2569 EXTEND(PL_stack_sp, 1);
2570 *++PL_stack_sp = sv;
aa689395 2571 oldmark = TOPMARK;
3280af22 2572 oldscope = PL_scopestack_ix;
a0d0e21e 2573
3280af22 2574 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2575 /* Handle first BEGIN of -d. */
3280af22 2576 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2577 /* Try harder, since this may have been a sighandler, thus
2578 * curstash may be meaningless. */
ea726b52 2579 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2580 && !(flags & G_NODEBUG))
533c011a 2581 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2582
968b3946
GS
2583 if (flags & G_METHOD) {
2584 Zero(&method_op, 1, UNOP);
2585 method_op.op_next = PL_op;
2586 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2587 method_op.op_type = OP_METHOD;
968b3946 2588 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2589 myop.op_type = OP_ENTERSUB;
f39d0b86 2590 PL_op = (OP*)&method_op;
968b3946
GS
2591 }
2592
312caa8e 2593 if (!(flags & G_EVAL)) {
0cdb2077 2594 CATCH_SET(TRUE);
d6f07c05 2595 CALL_BODY_SUB((OP*)&myop);
312caa8e 2596 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2597 CATCH_SET(oldcatch);
312caa8e
CS
2598 }
2599 else {
d78bda3d 2600 myop.op_other = (OP*)&myop;
3280af22 2601 PL_markstack_ptr--;
edb2152a 2602 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2603 PL_markstack_ptr++;
a0d0e21e 2604
14dd3ad8 2605 JMPENV_PUSH(ret);
edb2152a 2606
6224f72b
GS
2607 switch (ret) {
2608 case 0:
14dd3ad8 2609 redo_body:
d6f07c05 2610 CALL_BODY_SUB((OP*)&myop);
312caa8e 2611 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2612 if (!(flags & G_KEEPERR)) {
ab69dbc2 2613 CLEAR_ERRSV();
8433848b 2614 }
a0d0e21e 2615 break;
6224f72b 2616 case 1:
f86702cc 2617 STATUS_ALL_FAILURE;
a0d0e21e 2618 /* FALL THROUGH */
6224f72b 2619 case 2:
a0d0e21e 2620 /* my_exit() was called */
3280af22 2621 PL_curstash = PL_defstash;
a0d0e21e 2622 FREETMPS;
14dd3ad8 2623 JMPENV_POP;
cc3604b1 2624 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2625 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2626 my_exit_jump();
a0d0e21e 2627 /* NOTREACHED */
6224f72b 2628 case 3:
3280af22 2629 if (PL_restartop) {
533c011a 2630 PL_op = PL_restartop;
3280af22 2631 PL_restartop = 0;
312caa8e 2632 goto redo_body;
a0d0e21e 2633 }
3280af22 2634 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2635 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2636 retval = 0;
2637 else {
2638 retval = 1;
3280af22 2639 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2640 }
312caa8e 2641 break;
a0d0e21e 2642 }
a0d0e21e 2643
edb2152a
NC
2644 if (PL_scopestack_ix > oldscope)
2645 delete_eval_scope();
14dd3ad8 2646 JMPENV_POP;
a0d0e21e 2647 }
1e422769 2648
a0d0e21e 2649 if (flags & G_DISCARD) {
3280af22 2650 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2651 retval = 0;
2652 FREETMPS;
2653 LEAVE;
2654 }
533c011a 2655 PL_op = oldop;
a0d0e21e
LW
2656 return retval;
2657}
2658
6e72f9df 2659/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2660
954c1994
GS
2661/*
2662=for apidoc p||eval_sv
2663
2664Tells Perl to C<eval> the string in the SV.
2665
2666=cut
2667*/
2668
a0d0e21e 2669I32
864dbfa3 2670Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2671
8ac85365 2672 /* See G_* flags in cop.h */
a0d0e21e 2673{
97aff369 2674 dVAR;
924508f0 2675 dSP;
a0d0e21e 2676 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2677 VOL I32 oldmark = SP - PL_stack_base;
2678 VOL I32 retval = 0;
6224f72b 2679 int ret;
c4420975 2680 OP* const oldop = PL_op;
db36c5a1 2681 dJMPENV;
84902520 2682
7918f24d
NC
2683 PERL_ARGS_ASSERT_EVAL_SV;
2684
4633a7c4
LW
2685 if (flags & G_DISCARD) {
2686 ENTER;
2687 SAVETMPS;
2688 }
2689
462e5cf6 2690 SAVEOP();
533c011a
NIS
2691 PL_op = (OP*)&myop;
2692 Zero(PL_op, 1, UNOP);
3280af22
NIS
2693 EXTEND(PL_stack_sp, 1);
2694 *++PL_stack_sp = sv;
79072805 2695
4633a7c4
LW
2696 if (!(flags & G_NOARGS))
2697 myop.op_flags = OPf_STACKED;
5f66b61c 2698 myop.op_next = NULL;
6e72f9df 2699 myop.op_type = OP_ENTEREVAL;
4f911530 2700 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2701 if (flags & G_KEEPERR)
2702 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2703
dedbcade
DM
2704 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2705 * before a PUSHEVAL, which corrupts the stack after a croak */
2706 TAINT_PROPER("eval_sv()");
2707
14dd3ad8 2708 JMPENV_PUSH(ret);
6224f72b
GS
2709 switch (ret) {
2710 case 0:
14dd3ad8 2711 redo_body:
d6f07c05 2712 CALL_BODY_EVAL((OP*)&myop);
312caa8e 2713 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2714 if (!(flags & G_KEEPERR)) {
ab69dbc2 2715 CLEAR_ERRSV();
8433848b 2716 }
4633a7c4 2717 break;
6224f72b 2718 case 1:
f86702cc 2719 STATUS_ALL_FAILURE;
4633a7c4 2720 /* FALL THROUGH */
6224f72b 2721 case 2:
4633a7c4 2722 /* my_exit() was called */
3280af22 2723 PL_curstash = PL_defstash;
4633a7c4 2724 FREETMPS;
14dd3ad8 2725 JMPENV_POP;
cc3604b1 2726 if (PL_statusvalue && !(PL_exit_flags & PERL_EXIT_EXPECTED))
cea2e8a9 2727 Perl_croak(aTHX_ "Callback called exit");
f86702cc 2728 my_exit_jump();
4633a7c4 2729 /* NOTREACHED */
6224f72b 2730 case 3:
3280af22 2731 if (PL_restartop) {
533c011a 2732 PL_op = PL_restartop;
3280af22 2733 PL_restartop = 0;
312caa8e 2734 goto redo_body;
4633a7c4 2735 }
3280af22 2736 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2737 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2738 retval = 0;
2739 else {
2740 retval = 1;
3280af22 2741 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2742 }
312caa8e 2743 break;
4633a7c4
LW
2744 }
2745
14dd3ad8 2746 JMPENV_POP;
4633a7c4 2747 if (flags & G_DISCARD) {
3280af22 2748 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2749 retval = 0;
2750 FREETMPS;
2751 LEAVE;
2752 }
533c011a 2753 PL_op = oldop;
4633a7c4
LW
2754 return retval;
2755}
2756
954c1994
GS
2757/*
2758=for apidoc p||eval_pv
2759
2760Tells Perl to C<eval> the given string and return an SV* result.
2761
2762=cut
2763*/
2764
137443ea 2765SV*
864dbfa3 2766Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2767{
97aff369 2768 dVAR;
137443ea
PP
2769 dSP;
2770 SV* sv = newSVpv(p, 0);
2771
7918f24d
NC
2772 PERL_ARGS_ASSERT_EVAL_PV;
2773
864dbfa3 2774 eval_sv(sv, G_SCALAR);
137443ea
PP
2775 SvREFCNT_dec(sv);
2776
2777 SPAGAIN;
2778 sv = POPs;
2779 PUTBACK;
2780
2d8e6c8d 2781 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2782 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2783 }
137443ea
PP
2784
2785 return sv;
2786}
2787
4633a7c4
LW
2788/* Require a module. */
2789
954c1994 2790/*
ccfc67b7
JH
2791=head1 Embedding Functions
2792
954c1994
GS
2793=for apidoc p||require_pv
2794
7d3fb230
BS
2795Tells Perl to C<require> the file named by the string argument. It is
2796analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2797implemented that way; consider using load_module instead.
954c1994 2798
7d3fb230 2799=cut */
954c1994 2800
4633a7c4 2801void
864dbfa3 2802Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2803{
97aff369 2804 dVAR;
d3acc0f7 2805 dSP;
97aff369 2806 SV* sv;
7918f24d
NC
2807
2808 PERL_ARGS_ASSERT_REQUIRE_PV;
2809
e788e7d3 2810 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2811 PUTBACK;
be41e5d9
NC
2812 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2813 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2814 SPAGAIN;
2815 POPSTACK;
79072805
LW
2816}
2817
76e3520e 2818STATIC void
e1ec3a88 2819S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2820{
ab821d7f 2821 /* This message really ought to be max 23 lines.
75c72d73 2822 * Removed -h because the user already knows that option. Others? */
fb73857a 2823
27da23d5 2824 static const char * const usage_msg[] = {
aefc56c5 2825"-0[octal] specify record separator (\\0, if no argument)",
aefc56c5
SF
2826"-a autosplit mode with -n or -p (splits $_ into @F)",
2827"-C[number/list] enables the listed Unicode features",
2828"-c check syntax only (runs BEGIN and CHECK blocks)",
2829"-d[:debugger] run program under debugger",
2830"-D[number/list] set debugging flags (argument is a bit mask or alphabets)",
2831"-e program one line of program (several -e's allowed, omit programfile)",
bc9b29db 2832"-E program like -e, but enables all optional features",
aefc56c5 2833"-f don't do $sitelib/sitecustomize.pl at startup",
aefc56c5
SF
2834"-F/pattern/ split() pattern for -a switch (//'s are optional)",
2835"-i[extension] edit <> files in place (makes backup if extension supplied)",
2836"-Idirectory specify @INC/#include directory (several -I's allowed)",
2837"-l[octal] enable line ending processing, specifies line terminator",
2838"-[mM][-]module execute \"use/no module...\" before executing program",
2839"-n assume \"while (<>) { ... }\" loop around program",
2840"-p assume loop like -n but print line also, like sed",
aefc56c5
SF
2841"-s enable rudimentary parsing for switches after programfile",
2842"-S look for programfile using PATH environment variable",
2843"-t enable tainting warnings",
2844"-T enable tainting checks",
2845"-u dump core after parsing program",
2846"-U allow unsafe operations",
2847"-v print version, subversion (includes VERY IMPORTANT perl info)",
2848"-V[:variable] print configuration summary (or a single Config.pm variable)",
2849"-w enable many useful warnings (RECOMMENDED)",
2850"-W enable all warnings",
2851"-x[directory] strip off text before #!perl line and perhaps cd to directory",
2852"-X disable all warnings",
fb73857a
PP
2853"\n",
2854NULL
2855};
27da23d5 2856 const char * const *p = usage_msg;
fb73857a 2857
7918f24d
NC
2858 PERL_ARGS_ASSERT_USAGE;
2859
b0e47665
GS
2860 PerlIO_printf(PerlIO_stdout(),
2861 "\nUsage: %s [switches] [--] [programfile] [arguments]",
2862 name);
fb73857a 2863 while (*p)
b0e47665 2864 PerlIO_printf(PerlIO_stdout(), "\n %s", *p++);
4633a7c4
LW
2865}
2866
b4ab917c
DM
2867/* convert a string of -D options (or digits) into an int.
2868 * sets *s to point to the char after the options */
2869
2870#ifdef DEBUGGING
2871int
e1ec3a88 2872Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2873{
27da23d5 2874 static const char * const usage_msgd[] = {
e6e64d9b
JC
2875 " Debugging flag values: (see also -d)",
2876 " p Tokenizing and parsing (with v, displays parse stack)",
3679267a 2877 " s Stack snapshots (with v, displays all stacks)",
e6e64d9b
JC
2878 " l Context (loop) stack processing",
2879 " t Trace execution",
2880 " o Method and overloading resolution",
2881 " c String/numeric conversions",
4c84d7f2 2882 " P Print profiling info, source file input state",
d7a2c63c 2883 " m Memory and SV allocation",
e6e64d9b
JC
2884 " f Format processing",
2885 " r Regular expression parsing and execution",
2886 " x Syntax tree dump",
3679267a 2887 " u Tainting checks",
e6e64d9b
JC
2888 " H Hash dump -- usurps values()",
2889 " X Scratchpad allocation",
2890 " D Cleaning up",
e6e64d9b
JC
2891 " T Tokenising",
2892 " R Include reference counts of dumped variables (eg when using -Ds)",
2893 " J Do not s,t,P-debug (Jump over) opcodes within package DB",
2894 " v Verbose: use in conjunction with other flags",
2895 " C Copy On Write",
2896 " A Consistency checks on internal structures",
3679267a 2897 " q quiet - currently only suppresses the 'EXECUTING' message",
e6e64d9b
JC
2898 NULL
2899 };
b4ab917c 2900 int i = 0;
7918f24d
NC
2901
2902 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2903
b4ab917c
DM
2904 if (isALPHA(**s)) {
2905 /* if adding extra options, remember to update DEBUG_MASK */
88d2d28a 2906 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAq";
b4ab917c
DM
2907
2908 for (; isALNUM(**s); (*s)++) {
c4420975 2909 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2910 if (d)
2911 i |= 1 << (d - debopts);
2912 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2913 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2914 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2915 }
2916 }
e6e64d9b 2917 else if (isDIGIT(**s)) {
b4ab917c
DM
2918 i = atoi(*s);
2919 for (; isALNUM(**s); (*s)++) ;
2920 }
ddcf8bc1 2921 else if (givehelp) {
06e869a4 2922 const char *const *p = usage_msgd;
e6e64d9b
JC
2923 while (*p) PerlIO_printf(PerlIO_stdout(), "%s\n", *p++);
2924 }
b4ab917c
DM
2925# ifdef EBCDIC
2926 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2927 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2928 "-Dp not implemented on this platform\n");
2929# endif
2930 return i;
2931}
2932#endif
2933
79072805
LW
2934/* This routine handles any switches that can be given during run */
2935
c7030b81
NC
2936const char *
2937Perl_moreswitches(pTHX_ const char *s)
79072805 2938{
27da23d5 2939 dVAR;
84c133a0 2940 UV rschar;
0544e6df 2941 const char option = *s; /* used to remember option in -m/-M code */
79072805 2942
7918f24d
NC
2943 PERL_ARGS_ASSERT_MORESWITCHES;
2944
79072805
LW
2945 switch (*s) {
2946 case '0':
a863c7d1 2947 {
f2095865 2948 I32 flags = 0;
a3b680e6 2949 STRLEN numlen;
f2095865
JH
2950
2951 SvREFCNT_dec(PL_rs);
2952 if (s[1] == 'x' && s[2]) {
a3b680e6 2953 const char *e = s+=2;
f2095865
JH
2954 U8 *tmps;
2955
a3b680e6
AL
2956 while (*e)
2957 e++;
f2095865
JH
2958 numlen = e - s;
2959 flags = PERL_SCAN_SILENT_ILLDIGIT;
2960 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
2961 if (s + numlen < e) {
2962 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
2963 numlen = 0;
2964 s--;
2965 }
396482e1 2966 PL_rs = newSVpvs("");
c5661c80 2967 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
2968 tmps = (U8*)SvPVX(PL_rs);
2969 uvchr_to_utf8(tmps, rschar);
2970 SvCUR_set(PL_rs, UNISKIP(rschar));
2971 SvUTF8_on(PL_rs);
2972 }
2973 else {
2974 numlen = 4;
2975 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
2976 if (rschar & ~((U8)~0))
2977 PL_rs = &PL_sv_undef;
2978 else if (!rschar && numlen >= 2)
396482e1 2979 PL_rs = newSVpvs("");
f2095865
JH
2980 else {
2981 char ch = (char)rschar;
2982 PL_rs = newSVpvn(&ch, 1);
2983 }
2984 }
64ace3f8 2985 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 2986 return s + numlen;
a863c7d1 2987 }
46487f74 2988 case 'C':
a05d7ebb 2989 s++;
dd374669 2990 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
2991 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
2992 PL_utf8cache = -1;
46487f74 2993 return s;
2304df62 2994 case 'F':
3280af22 2995 PL_minus_F = TRUE;
ebce5377
RGS
2996 PL_splitstr = ++s;
2997 while (*s && !isSPACE(*s)) ++s;
e49e380e 2998 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 2999 return s;
79072805 3000 case 'a':
3280af22 3001 PL_minus_a = TRUE;
79072805
LW
3002 s++;
3003 return s;
3004 case 'c':
3280af22 3005 PL_minus_c = TRUE;
79072805
LW
3006 s++;
3007 return s;
3008 case 'd':
f20b2998 3009 forbid_setid('d', FALSE);
4633a7c4 3010 s++;
2cbb2ee1
RGS
3011
3012 /* -dt indicates to the debugger that threads will be used */
3013 if (*s == 't' && !isALNUM(s[1])) {
3014 ++s;
3015 my_setenv("PERL5DB_THREADED", "1");
3016 }
3017
70c94a19
RR
3018 /* The following permits -d:Mod to accepts arguments following an =
3019 in the fashion that -MSome::Mod does. */
3020 if (*s == ':' || *s == '=') {
f85893a1
NC
3021 const char *start = ++s;
3022 const char *const end = s + strlen(s);
396482e1 3023 SV * const sv = newSVpvs("use Devel::");
f85893a1 3024
70c94a19
RR
3025 /* We now allow -d:Module=Foo,Bar */
3026 while(isALNUM(*s) || *s==':') ++s;
3027 if (*s != '=')
f85893a1 3028 sv_catpvn(sv, start, end - start);
70c94a19
RR
3029 else {
3030 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3031 /* Don't use NUL as q// delimiter here, this string goes in the
3032 * environment. */
3033 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3034 }
f85893a1 3035 s = end;
184f32ec 3036 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3037 SvREFCNT_dec(sv);
4633a7c4 3038 }
ed094faf 3039 if (!PL_perldb) {
3280af22 3040 PL_perldb = PERLDB_ALL;
a0d0e21e 3041 init_debugger();
ed094faf 3042 }
79072805
LW
3043 return s;
3044 case 'D':
0453d815 3045 {
79072805 3046#ifdef DEBUGGING
f20b2998 3047 forbid_setid('D', FALSE);
b4ab917c 3048 s++;
dd374669 3049 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3050#else /* !DEBUGGING */
0453d815 3051 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3052 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3053 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3054 for (s++; isALNUM(*s); s++) ;
79072805 3055#endif
79072805 3056 return s;
0453d815 3057 }
4633a7c4 3058 case 'h':
ac27b0f5 3059 usage(PL_origargv[0]);
7ca617d0 3060 my_exit(0);
79072805 3061 case 'i':
43c5f42d 3062 Safefree(PL_inplace);
c030f24b
GH
3063#if defined(__CYGWIN__) /* do backup extension automagically */
3064 if (*(s+1) == '\0') {
c86a4f2e 3065 PL_inplace = savepvs(".bak");
c030f24b
GH
3066 return s+1;
3067 }
3068#endif /* __CYGWIN__ */
5ef5d758 3069 {
d4c19fe8 3070 const char * const start = ++s;
5ef5d758
NC
3071 while (*s && !isSPACE(*s))
3072 ++s;
3073
3074 PL_inplace = savepvn(start, s - start);
3075 }
7b8d334a 3076 if (*s) {
5ef5d758 3077 ++s;
7b8d334a 3078 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3079 s++;
7b8d334a 3080 }
fb73857a 3081 return s;
4e49a025 3082 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3083 forbid_setid('I', FALSE);
fb73857a
PP
3084 ++s;
3085 while (*s && isSPACE(*s))
3086 ++s;
3087 if (*s) {
c7030b81 3088 const char *e, *p;
0df16ed7
GS
3089 p = s;
3090 /* ignore trailing spaces (possibly followed by other switches) */
3091 do {
3092 for (e = p; *e && !isSPACE(*e); e++) ;
3093 p = e;
3094 while (isSPACE(*p))
3095 p++;
3096 } while (*p && *p != '-');
55b4bc1c 3097 incpush(s, e-s,
e28f3139 3098 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3099 s = p;
3100 if (*s == '-')
3101 s++;
79072805
LW
3102 }
3103 else
a67e862a 3104 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3105 return s;
79072805 3106 case 'l':
3280af22 3107 PL_minus_l = TRUE;
79072805 3108 s++;
7889fe52
NIS
3109 if (PL_ors_sv) {
3110 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3111 PL_ors_sv = NULL;
7889fe52 3112 }
79072805 3113 if (isDIGIT(*s)) {
53305cf1 3114 I32 flags = 0;
a3b680e6 3115 STRLEN numlen;
396482e1 3116 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3117 numlen = 3 + (*s == '0');
3118 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3119 s += numlen;
3120 }
3121 else {
8bfdd7d9 3122 if (RsPARA(PL_rs)) {
396482e1 3123 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3124 }
3125 else {
8bfdd7d9 3126 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3127 }
79072805
LW
3128 }
3129 return s;
1a30305b 3130 case 'M':
f20b2998 3131 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3132 /* FALL THROUGH */
3133 case 'm':
f20b2998 3134 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3135 if (*++s) {
c7030b81 3136 const char *start;
b64cb68c 3137 const char *end;
11343788 3138 SV *sv;
e1ec3a88 3139 const char *use = "use ";
0544e6df 3140 bool colon = FALSE;
a5f75d66 3141 /* -M-foo == 'no foo' */
d0043bd1
NC
3142 /* Leading space on " no " is deliberate, to make both
3143 possibilities the same length. */
3144 if (*s == '-') { use = " no "; ++s; }
3145 sv = newSVpvn(use,4);
a5f75d66 3146 start = s;
1a30305b 3147 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3148 while(isALNUM(*s) || *s==':') {
3149 if( *s++ == ':' ) {
3150 if( *s == ':' )
3151 s++;
3152 else
3153 colon = TRUE;
3154 }
3155 }
3156 if (s == start)
3157 Perl_croak(aTHX_ "Module name required with -%c option",
3158 option);
3159 if (colon)
3160 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3161 "contains single ':'",
63da6837 3162 (int)(s - start), start, option);
b64cb68c 3163 end = s + strlen(s);
c07a80fd 3164 if (*s != '=') {
b64cb68c 3165 sv_catpvn(sv, start, end - start);
0544e6df 3166 if (option == 'm') {
c07a80fd 3167 if (*s != '\0')
cea2e8a9 3168 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3169 sv_catpvs( sv, " ()");
c07a80fd
PP
3170 }
3171 } else {
11343788 3172 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3173 /* Use NUL as q''-delimiter. */
3174 sv_catpvs(sv, " split(/,/,q\0");
3175 ++s;
3176 sv_catpvn(sv, s, end - s);
396482e1 3177 sv_catpvs(sv, "\0)");
c07a80fd 3178 }
b64cb68c 3179 s = end;
29a861e7 3180 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3181 }
3182 else
0544e6df 3183 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3184 return s;
79072805 3185 case 'n':
3280af22 3186 PL_minus_n = TRUE;
79072805
LW
3187 s++;
3188 return s;
3189 case 'p':
3280af22 3190 PL_minus_p = TRUE;
79072805
LW
3191 s++;
3192 return s;
3193 case 's':
f20b2998 3194 forbid_setid('s', FALSE);
3280af22 3195 PL_doswitches = TRUE;
79072805
LW
3196 s++;
3197 return s;
6537fe72
MS
3198 case 't':
3199 if (!PL_tainting)
22f7c9c9 3200 TOO_LATE_FOR('t');
6537fe72
MS
3201 s++;
3202 return s;
463ee0b2 3203 case 'T':
3280af22 3204 if (!PL_tainting)
22f7c9c9 3205 TOO_LATE_FOR('T');
463ee0b2
LW
3206 s++;
3207 return s;
79072805 3208 case 'u':
bf4acbe4
GS
3209#ifdef MACOS_TRADITIONAL
3210 Perl_croak(aTHX_ "Believe me, you don't want to use \"-u\" on a Macintosh");
3211#endif
3280af22 3212 PL_do_undump = TRUE;
79072805
LW
3213 s++;
3214 return s;
3215 case 'U':
3280af22 3216 PL_unsafe = TRUE;
79072805
LW
3217 s++;
3218 return s;
3219 case 'v':
d7aa5382 3220 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3221 upg_version(PL_patchlevel, TRUE);
8e9464f1 3222#if !defined(DGUX)
46807d8e
YO
3223 {
3224 SV* level= vstringify(PL_patchlevel);
3225#ifdef PERL_PATCHNUM
23d483e2
NC
3226# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3227 SV *num = newSVpvs(PERL_PATCHNUM "*");
3228# else
3229 SV *num = newSVpvs(PERL_PATCHNUM);
3230# endif
46807d8e
YO
3231
3232 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3233 SvREFCNT_dec(level);
3234 level= num;
3235 } else {
d0a9311f 3236 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3237 SvREFCNT_dec(num);
3238 }
3239 #endif
3240 PerlIO_printf(PerlIO_stdout(),
f1f66076 3241 "\nThis is perl, %"SVf
f1f66076 3242 " built for %s",
46807d8e 3243 level,
f1f66076 3244 ARCHNAME);
46807d8e
YO
3245 SvREFCNT_dec(level);
3246 }
8e9464f1
JH
3247#else /* DGUX */
3248/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3249 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3250 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3251 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3252 PerlIO_printf(PerlIO_stdout(),
3253 Perl_form(aTHX_ " built under %s at %s %s\n",
3254 OSNAME, __DATE__, __TIME__));
3255 PerlIO_printf(PerlIO_stdout(),
3256 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3257 OSVERS));
8e9464f1 3258#endif /* !DGUX */
fb73857a
PP
3259#if defined(LOCAL_PATCH_COUNT)
3260 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3261 PerlIO_printf(PerlIO_stdout(),
3262 "\n(with %d registered patch%s, "
3263 "see perl -V for more detail)",
bb7a0f54 3264 LOCAL_PATCH_COUNT,
b0e47665 3265 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3266#endif
1a30305b 3267
b0e47665 3268 PerlIO_printf(PerlIO_stdout(),
737f4459 3269 "\n\nCopyright 1987-2009, Larry Wall\n");
eae9c151
JH
3270#ifdef MACOS_TRADITIONAL
3271 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3272 "\nMac OS port Copyright 1991-2002, Matthias Neeracher;\n"
03765510 3273 "maintained by Chris Nandor\n");
eae9c151 3274#endif
79072805 3275#ifdef MSDOS
b0e47665
GS
3276 PerlIO_printf(PerlIO_stdout(),
3277 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3278#endif
3279#ifdef DJGPP
b0e47665
GS
3280 PerlIO_printf(PerlIO_stdout(),
3281 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3282 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3283#endif
79072805 3284#ifdef OS2
b0e47665
GS
3285 PerlIO_printf(PerlIO_stdout(),
3286 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3287 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3288#endif
79072805 3289#ifdef atarist
b0e47665
GS
3290 PerlIO_printf(PerlIO_stdout(),
3291 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3292#endif
a3f9223b 3293#ifdef __BEOS__
b0e47665
GS
3294 PerlIO_printf(PerlIO_stdout(),
3295 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3296#endif
1d84e8df 3297#ifdef MPE
b0e47665 3298 PerlIO_printf(PerlIO_stdout(),
e583a879 3299 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3300#endif
9d116dd7 3301#ifdef OEMVS
b0e47665
GS
3302 PerlIO_printf(PerlIO_stdout(),
3303 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3304#endif
495c5fdc 3305#ifdef __VOS__
b0e47665 3306 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3307 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3308#endif
092bebab 3309#ifdef __OPEN_VM
b0e47665
GS
3310 PerlIO_printf(PerlIO_stdout(),
3311 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3312#endif
a1a0e61e 3313#ifdef POSIX_BC
b0e47665
GS
3314 PerlIO_printf(PerlIO_stdout(),
3315 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3316#endif
61ae2fbf 3317#ifdef __MINT__
b0e47665
GS
3318 PerlIO_printf(PerlIO_stdout(),
3319 "MiNT port by Guido Flohr, 1997-1999\n");
61ae2fbf 3320#endif
f83d2536 3321#ifdef EPOC
b0e47665 3322 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3323 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3324#endif
e1caacb4 3325#ifdef UNDER_CE
b475b3e6
JH
3326 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3327 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3328 wce_hitreturn();
3329#endif
a0fd4948 3330#ifdef __SYMBIAN32__
27da23d5
JH
3331 PerlIO_printf(PerlIO_stdout(),
3332 "Symbian port by Nokia, 2004-2005\n");
3333#endif
baed7233
DL
3334#ifdef BINARY_BUILD_NOTICE
3335 BINARY_BUILD_NOTICE;
3336#endif
b0e47665
GS
3337 PerlIO_printf(PerlIO_stdout(),
3338 "\n\
79072805 3339Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3340GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3341Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3342this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3343Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3344 my_exit(0);
79072805 3345 case 'w':
b2e5e6ba 3346 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3347 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3348 }
599cee73
PM
3349 s++;
3350 return s;
3351 case 'W':
ac27b0f5 3352 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3353 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3354 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3355 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3356 s++;
3357 return s;
3358 case 'X':
ac27b0f5 3359 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3360 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3361 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3362 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3363 s++;
3364 return s;
a0d0e21e 3365 case '*':
79072805 3366 case ' ':
d3133c89
NC
3367 while( *s == ' ' )
3368 ++s;
3369 if (s[0] == '-') /* Additional switches on #! line. */
3370 return s+1;
79072805 3371 break;
a0d0e21e 3372 case '-':
79072805 3373 case 0:
51882d45 3374#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3375 case '\r':
3376#endif
79072805
LW
3377 case '\n':
3378 case '\t':
3379 break;
aa689395
PP
3380#ifdef ALTERNATE_SHEBANG
3381 case 'S': /* OS/2 needs -S on "extproc" line. */
3382 break;
3383#endif
79072805 3384 default:
cea2e8a9 3385 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3386 }
bd61b366 3387 return NULL;
79072805
LW
3388}
3389
3390/* compliments of Tom Christiansen */
3391
3392/* unexec() can be found in the Gnu emacs distribution */
ee580363 3393/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3394
3395void
864dbfa3 3396Perl_my_unexec(pTHX)
79072805 3397{
b37c2d43 3398 PERL_UNUSED_CONTEXT;
79072805 3399#ifdef UNEXEC
b37c2d43
AL
3400 SV * prog = newSVpv(BIN_EXP, 0);
3401 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3402 int status = 1;
79072805
LW
3403 extern int etext;
3404
396482e1 3405 sv_catpvs(prog, "/perl");
396482e1 3406 sv_catpvs(file, ".perldump");
79072805 3407
ee580363
GS
3408 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3409 /* unexec prints msg to stderr in case of failure */
6ad3d225 3410 PerlProc_exit(status);
79072805 3411#else
a5f75d66
AD
3412# ifdef VMS
3413# include <lib$routines.h>
3414 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3415# elif defined(WIN32) || defined(__CYGWIN__)
3416 Perl_croak(aTHX_ "dump is not supported");
aa689395 3417# else
79072805 3418 ABORT(); /* for use with undump */
aa689395 3419# endif
a5f75d66 3420#endif
79072805
LW
3421}
3422
cb68f92d
GS
3423/* initialize curinterp */
3424STATIC void
cea2e8a9 3425S_init_interp(pTHX)
cb68f92d 3426{
97aff369 3427 dVAR;
acfe0abc
GS
3428#ifdef MULTIPLICITY
3429# define PERLVAR(var,type)
3430# define PERLVARA(var,n,type)
3431# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3432# define PERLVARI(var,type,init) aTHX->var = init;
3433# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3434# else
acfe0abc
GS
3435# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3436# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3437# endif
acfe0abc 3438# include "intrpvar.h"
acfe0abc
GS
3439# undef PERLVAR
3440# undef PERLVARA
3441# undef PERLVARI
3442# undef PERLVARIC
3443#else
3444# define PERLVAR(var,type)
3445# define PERLVARA(var,n,type)
3446# define PERLVARI(var,type,init) PL_##var = init;
3447# define PERLVARIC(var,type,init) PL_##var = init;
3448# include "intrpvar.h"
acfe0abc
GS
3449# undef PERLVAR
3450# undef PERLVARA
3451# undef PERLVARI
3452# undef PERLVARIC
cb68f92d
GS
3453#endif
3454
46ab3289
NC
3455 /* As these are inside a structure, PERLVARI isn't capable of initialising
3456 them */
6c3f0a89
NC
3457 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3458 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3459}
3460
76e3520e 3461STATIC void
cea2e8a9 3462S_init_main_stash(pTHX)
79072805 3463{
97aff369 3464 dVAR;
463ee0b2 3465 GV *gv;
6e72f9df 3466
3280af22 3467 PL_curstash = PL_defstash = newHV();
23579a14
NC
3468 /* We know that the string "main" will be in the global shared string
3469 table, so it's a small saving to use it rather than allocate another
3470 8 bytes. */
18916d0d 3471 PL_curstname = newSVpvs_share("main");
fafc274c 3472 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC
3473 /* If we hadn't caused another reference to "main" to be in the shared
3474 string table above, then it would be worth reordering these two,
3