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INSTALL: fix a couple of typos
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
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8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
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11 */
12
a0d0e21e 13/*
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14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
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17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
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21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
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39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
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61#ifndef HZ
62# ifdef CLK_TCK
63# define HZ CLK_TCK
64# else
65# define HZ 60
66# endif
67#endif
68
7114a2d2 69#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 70char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
71#endif
72
acfe0abc 73static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 74
cc69b689 75#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 76# define validate_suid(rsfp) NOOP
cc69b689 77#else
b24bc095 78# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 79#endif
8d063cd8 80
d6f07c05
AL
81#define CALL_BODY_SUB(myop) \
82 if (PL_op == (myop)) \
139d0ce6 83 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
84 if (PL_op) \
85 CALLRUNOPS(aTHX);
86
87#define CALL_LIST_BODY(cv) \
88 PUSHMARK(PL_stack_sp); \
9a8aa25b 89 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 90
e6827a76 91static void
daa7d858 92S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 93{
27da23d5 94 dVAR;
e6827a76
NC
95 if (!PL_curinterp) {
96 PERL_SET_INTERP(my_perl);
3db8f154 97#if defined(USE_ITHREADS)
e6827a76
NC
98 INIT_THREADS;
99 ALLOC_THREAD_KEY;
100 PERL_SET_THX(my_perl);
101 OP_REFCNT_INIT;
e8570548 102 OP_CHECK_MUTEX_INIT;
71ad1b0c 103 HINTS_REFCNT_INIT;
e6827a76 104 MUTEX_INIT(&PL_dollarzero_mutex);
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105 MUTEX_INIT(&PL_my_ctx_mutex);
106# endif
e6827a76 107 }
c0bce9aa
NC
108#if defined(USE_ITHREADS)
109 else
110#else
111 /* This always happens for non-ithreads */
112#endif
113 {
e6827a76
NC
114 PERL_SET_THX(my_perl);
115 }
116}
06d86050 117
cbec8ebe
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118
119/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
120
121void
122Perl_sys_init(int* argc, char*** argv)
123{
4fc0badb 124 dVAR;
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125
126 PERL_ARGS_ASSERT_SYS_INIT;
127
cbec8ebe
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128 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
129 PERL_UNUSED_ARG(argv);
130 PERL_SYS_INIT_BODY(argc, argv);
131}
132
133void
134Perl_sys_init3(int* argc, char*** argv, char*** env)
135{
4fc0badb 136 dVAR;
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137
138 PERL_ARGS_ASSERT_SYS_INIT3;
139
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DM
140 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
141 PERL_UNUSED_ARG(argv);
142 PERL_UNUSED_ARG(env);
143 PERL_SYS_INIT3_BODY(argc, argv, env);
144}
145
146void
d0820ef1 147Perl_sys_term()
cbec8ebe 148{
4fc0badb 149 dVAR;
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DM
150 if (!PL_veto_cleanup) {
151 PERL_SYS_TERM_BODY();
152 }
cbec8ebe
DM
153}
154
155
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156#ifdef PERL_IMPLICIT_SYS
157PerlInterpreter *
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158perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
159 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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160 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
161 struct IPerlDir* ipD, struct IPerlSock* ipS,
162 struct IPerlProc* ipP)
163{
164 PerlInterpreter *my_perl;
7918f24d
NC
165
166 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
167
9f653bb5 168 /* Newx() needs interpreter, so call malloc() instead */
32e30700 169 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 170 S_init_tls_and_interp(my_perl);
32e30700
GS
171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
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GS
173 PL_MemShared = ipMS;
174 PL_MemParse = ipMP;
32e30700
GS
175 PL_Env = ipE;
176 PL_StdIO = ipStd;
177 PL_LIO = ipLIO;
178 PL_Dir = ipD;
179 PL_Sock = ipS;
180 PL_Proc = ipP;
7cb608b5 181 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 182
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183 return my_perl;
184}
185#else
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186
187/*
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188=head1 Embedding Functions
189
954c1994
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190=for apidoc perl_alloc
191
192Allocates a new Perl interpreter. See L<perlembed>.
193
194=cut
195*/
196
93a17b20 197PerlInterpreter *
cea2e8a9 198perl_alloc(void)
79072805 199{
cea2e8a9 200 PerlInterpreter *my_perl;
79072805 201
9f653bb5 202 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 203 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 204
e6827a76 205 S_init_tls_and_interp(my_perl);
7cb608b5 206#ifndef PERL_TRACK_MEMPOOL
07409e01 207 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
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NC
208#else
209 Zero(my_perl, 1, PerlInterpreter);
210 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
211 return my_perl;
212#endif
79072805 213}
32e30700 214#endif /* PERL_IMPLICIT_SYS */
79072805 215
954c1994
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216/*
217=for apidoc perl_construct
218
219Initializes a new Perl interpreter. See L<perlembed>.
220
221=cut
222*/
223
79072805 224void
0cb96387 225perl_construct(pTHXx)
79072805 226{
27da23d5 227 dVAR;
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228
229 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
230
8990e307 231#ifdef MULTIPLICITY
54aff467 232 init_interp();
ac27b0f5 233 PL_perl_destruct_level = 1;
54aff467 234#else
7918f24d 235 PERL_UNUSED_ARG(my_perl);
54aff467
GS
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
34caed6d
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239 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
240
0d96b528 241 init_constants();
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242
243 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 244 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
245
246 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 247#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 248 PL_pidstatus = newHV();
ca0c25f6 249#endif
79072805 250
396482e1 251 PL_rs = newSVpvs("\n");
dc92893f 252
cea2e8a9 253 init_stacks();
79072805 254
748a9306 255 init_ids();
a5f75d66 256
312caa8e 257 JMPENV_BOOTSTRAP;
f86702cc
PP
258 STATUS_ALL_SUCCESS;
259
0672f40e 260 init_i18nl10n(1);
36477c24 261 SET_NUMERIC_STANDARD();
0b5b802d 262
ab821d7f 263#if defined(LOCAL_PATCH_COUNT)
3280af22 264 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
265#endif
266
52853b95
GS
267#ifdef HAVE_INTERP_INTERN
268 sys_intern_init();
269#endif
270
3a1ee7e8 271 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 272
3280af22
NIS
273 PL_fdpid = newAV(); /* for remembering popen pids by fd */
274 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 275 PL_errors = newSVpvs("");
76f68e9b
MHM
276 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
277 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
278 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 279#ifdef USE_ITHREADS
402d2eb1
NC
280 /* First entry is a list of empty elements. It needs to be initialised
281 else all hell breaks loose in S_find_uninit_var(). */
282 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 283 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 284 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 285#endif
e5dd39fc 286#ifdef USE_REENTRANT_API
59bd0823 287 Perl_reentrant_init(aTHX);
e5dd39fc 288#endif
7dc86639
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289#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
290 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
291 * This MUST be done before any hash stores or fetches take place.
292 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
293 * yourself, it is your responsibility to provide a good random seed!
294 * You can also define PERL_HASH_SEED in compile time, see hv.h.
295 *
296 * XXX: fix this comment */
297 if (PL_hash_seed_set == FALSE) {
298 Perl_get_hash_seed(aTHX_ PL_hash_seed);
299 PL_hash_seed_set= TRUE;
300 }
301#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
302
303 /* Note that strtab is a rather special HV. Assumptions are made
304 about not iterating on it, and not adding tie magic to it.
305 It is properly deallocated in perl_destruct() */
306 PL_strtab = newHV();
307
3d47000e
AB
308 HvSHAREKEYS_off(PL_strtab); /* mandatory */
309 hv_ksplit(PL_strtab, 512);
310
0631ea03
AB
311#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
312 _dyld_lookup_and_bind
313 ("__environ", (unsigned long *) &environ_pointer, NULL);
314#endif /* environ */
315
2f42fcb0
JH
316#ifndef PERL_MICRO
317# ifdef USE_ENVIRON_ARRAY
0631ea03 318 PL_origenviron = environ;
2f42fcb0 319# endif
0631ea03
AB
320#endif
321
5311654c 322 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 323 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
324 * The HZ if not originally defined has been by now
325 * been defined as CLK_TCK, if available. */
b6c36746 326#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
327 PL_clocktick = sysconf(_SC_CLK_TCK);
328 if (PL_clocktick <= 0)
329#endif
330 PL_clocktick = HZ;
331
081fc587
AB
332 PL_stashcache = newHV();
333
e8e3635e 334 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 335 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 336
27da23d5
JH
337#ifdef HAS_MMAP
338 if (!PL_mmap_page_size) {
339#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
340 {
341 SETERRNO(0, SS_NORMAL);
342# ifdef _SC_PAGESIZE
343 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
344# else
345 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
346# endif
347 if ((long) PL_mmap_page_size < 0) {
348 if (errno) {
44f8325f 349 SV * const error = ERRSV;
d4c19fe8 350 SvUPGRADE(error, SVt_PV);
0510663f 351 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
352 }
353 else
354 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
355 }
356 }
357#else
358# ifdef HAS_GETPAGESIZE
359 PL_mmap_page_size = getpagesize();
360# else
361# if defined(I_SYS_PARAM) && defined(PAGESIZE)
362 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
363# endif
364# endif
365#endif
366 if (PL_mmap_page_size <= 0)
367 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
368 (IV) PL_mmap_page_size);
369 }
370#endif /* HAS_MMAP */
371
372#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
373 PL_timesbase.tms_utime = 0;
374 PL_timesbase.tms_stime = 0;
375 PL_timesbase.tms_cutime = 0;
376 PL_timesbase.tms_cstime = 0;
377#endif
378
7d113631
NC
379 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
380
a3e6e81e 381 PL_registered_mros = newHV();
9e169432
NC
382 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
383 HvMAX(PL_registered_mros) = 0;
a3e6e81e 384
8990e307 385 ENTER;
79072805
LW
386}
387
954c1994 388/*
62375a60
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389=for apidoc nothreadhook
390
391Stub that provides thread hook for perl_destruct when there are
392no threads.
393
394=cut
395*/
396
397int
4e9e3734 398Perl_nothreadhook(pTHX)
62375a60 399{
96a5add6 400 PERL_UNUSED_CONTEXT;
62375a60
NIS
401 return 0;
402}
403
41e4abd8
NC
404#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
405void
406Perl_dump_sv_child(pTHX_ SV *sv)
407{
408 ssize_t got;
bf357333
NC
409 const int sock = PL_dumper_fd;
410 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
411 union control_un control;
412 struct msghdr msg;
808ad2d0 413 struct iovec vec[2];
bf357333 414 struct cmsghdr *cmptr;
808ad2d0
NC
415 int returned_errno;
416 unsigned char buffer[256];
41e4abd8 417
7918f24d
NC
418 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
419
bf357333 420 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
421 return;
422
423 PerlIO_flush(Perl_debug_log);
424
bf357333
NC
425 /* All these shenanigans are to pass a file descriptor over to our child for
426 it to dump out to. We can't let it hold open the file descriptor when it
427 forks, as the file descriptor it will dump to can turn out to be one end
428 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 429 be open, the wait would be forever.) */
bf357333
NC
430
431 msg.msg_control = control.control;
432 msg.msg_controllen = sizeof(control.control);
433 /* We're a connected socket so we don't need a destination */
434 msg.msg_name = NULL;
435 msg.msg_namelen = 0;
436 msg.msg_iov = vec;
808ad2d0 437 msg.msg_iovlen = 1;
bf357333
NC
438
439 cmptr = CMSG_FIRSTHDR(&msg);
440 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
441 cmptr->cmsg_level = SOL_SOCKET;
442 cmptr->cmsg_type = SCM_RIGHTS;
443 *((int *)CMSG_DATA(cmptr)) = 1;
444
445 vec[0].iov_base = (void*)&sv;
446 vec[0].iov_len = sizeof(sv);
447 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
448
449 if(got < 0) {
bf357333 450 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
451 abort();
452 }
bf357333
NC
453 if(got < sizeof(sv)) {
454 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
455 abort();
456 }
457
808ad2d0
NC
458 /* Return protocol is
459 int: errno value
460 unsigned char: length of location string (0 for empty)
461 unsigned char*: string (not terminated)
462 */
463 vec[0].iov_base = (void*)&returned_errno;
464 vec[0].iov_len = sizeof(returned_errno);
465 vec[1].iov_base = buffer;
466 vec[1].iov_len = 1;
467
468 got = readv(sock, vec, 2);
41e4abd8
NC
469
470 if(got < 0) {
471 perror("Debug leaking scalars parent read failed");
808ad2d0 472 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
473 abort();
474 }
808ad2d0 475 if(got < sizeof(returned_errno) + 1) {
41e4abd8 476 perror("Debug leaking scalars parent short read");
808ad2d0 477 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
478 abort();
479 }
480
808ad2d0
NC
481 if (*buffer) {
482 got = read(sock, buffer + 1, *buffer);
483 if(got < 0) {
484 perror("Debug leaking scalars parent read 2 failed");
485 PerlIO_flush(PerlIO_stderr());
486 abort();
487 }
488
489 if(got < *buffer) {
490 perror("Debug leaking scalars parent short read 2");
491 PerlIO_flush(PerlIO_stderr());
492 abort();
493 }
494 }
495
496 if (returned_errno || *buffer) {
497 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
498 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
499 returned_errno, strerror(returned_errno));
41e4abd8
NC
500 }
501}
502#endif
503
62375a60 504/*
954c1994
GS
505=for apidoc perl_destruct
506
507Shuts down a Perl interpreter. See L<perlembed>.
508
509=cut
510*/
511
31d77e54 512int
0cb96387 513perl_destruct(pTHXx)
79072805 514{
27da23d5 515 dVAR;
be2ea8ed 516 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 517 HV *hv;
2aa47728 518#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
519 pid_t child;
520#endif
9c0b6888 521 int i;
8990e307 522
7918f24d
NC
523 PERL_ARGS_ASSERT_PERL_DESTRUCT;
524#ifndef MULTIPLICITY
ed6c66dd 525 PERL_UNUSED_ARG(my_perl);
7918f24d 526#endif
9d4ba2ae 527
3d22c4f0
GG
528 assert(PL_scopestack_ix == 1);
529
7766f137
GS
530 /* wait for all pseudo-forked children to finish */
531 PERL_WAIT_FOR_CHILDREN;
532
3280af22 533 destruct_level = PL_perl_destruct_level;
36e77d41 534#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 535 {
9d4ba2ae
AL
536 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
537 if (s) {
36e77d41
DD
538 const int i = atoi(s);
539#ifdef DEBUGGING
540 if (destruct_level < i) destruct_level = i;
541#endif
542#ifdef PERL_TRACK_MEMPOOL
543 /* RT #114496, for perl_free */
544 PL_perl_destruct_level = i;
545#endif
5f05dabc 546 }
4633a7c4
LW
547 }
548#endif
549
27da23d5 550 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
551 dJMPENV;
552 int x = 0;
553
554 JMPENV_PUSH(x);
1b6737cc 555 PERL_UNUSED_VAR(x);
9ebf26ad 556 if (PL_endav && !PL_minus_c) {
ca7b837b 557 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 558 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 559 }
f3faeb53 560 JMPENV_POP;
26f423df 561 }
f3faeb53 562 LEAVE;
a0d0e21e 563 FREETMPS;
3d22c4f0 564 assert(PL_scopestack_ix == 0);
a0d0e21e 565
e00b64d4 566 /* Need to flush since END blocks can produce output */
f13a2bc0 567 my_fflush_all();
e00b64d4 568
16c91539 569 if (PL_threadhook(aTHX)) {
62375a60 570 /* Threads hook has vetoed further cleanup */
c301d606 571 PL_veto_cleanup = TRUE;
37038d91 572 return STATUS_EXIT;
62375a60
NIS
573 }
574
2aa47728
NC
575#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
576 if (destruct_level != 0) {
577 /* Fork here to create a child. Our child's job is to preserve the
578 state of scalars prior to destruction, so that we can instruct it
579 to dump any scalars that we later find have leaked.
580 There's no subtlety in this code - it assumes POSIX, and it doesn't
581 fail gracefully */
582 int fd[2];
583
584 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
585 perror("Debug leaking scalars socketpair failed");
586 abort();
587 }
588
589 child = fork();
590 if(child == -1) {
591 perror("Debug leaking scalars fork failed");
592 abort();
593 }
594 if (!child) {
595 /* We are the child */
3125a5a4
NC
596 const int sock = fd[1];
597 const int debug_fd = PerlIO_fileno(Perl_debug_log);
598 int f;
808ad2d0
NC
599 const char *where;
600 /* Our success message is an integer 0, and a char 0 */
b61433a9 601 static const char success[sizeof(int) + 1] = {0};
3125a5a4 602
2aa47728 603 close(fd[0]);
2aa47728 604
3125a5a4
NC
605 /* We need to close all other file descriptors otherwise we end up
606 with interesting hangs, where the parent closes its end of a
607 pipe, and sits waiting for (another) child to terminate. Only
608 that child never terminates, because it never gets EOF, because
bf357333
NC
609 we also have the far end of the pipe open. We even need to
610 close the debugging fd, because sometimes it happens to be one
611 end of a pipe, and a process is waiting on the other end for
612 EOF. Normally it would be closed at some point earlier in
613 destruction, but if we happen to cause the pipe to remain open,
614 EOF never occurs, and we get an infinite hang. Hence all the
615 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
616
617 f = sysconf(_SC_OPEN_MAX);
618 if(f < 0) {
808ad2d0
NC
619 where = "sysconf failed";
620 goto abort;
3125a5a4
NC
621 }
622 while (f--) {
623 if (f == sock)
624 continue;
3125a5a4
NC
625 close(f);
626 }
627
2aa47728
NC
628 while (1) {
629 SV *target;
bf357333
NC
630 union control_un control;
631 struct msghdr msg;
632 struct iovec vec[1];
633 struct cmsghdr *cmptr;
634 ssize_t got;
635 int got_fd;
636
637 msg.msg_control = control.control;
638 msg.msg_controllen = sizeof(control.control);
639 /* We're a connected socket so we don't need a source */
640 msg.msg_name = NULL;
641 msg.msg_namelen = 0;
642 msg.msg_iov = vec;
643 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
644
645 vec[0].iov_base = (void*)&target;
646 vec[0].iov_len = sizeof(target);
647
648 got = recvmsg(sock, &msg, 0);
2aa47728
NC
649
650 if(got == 0)
651 break;
652 if(got < 0) {
808ad2d0
NC
653 where = "recv failed";
654 goto abort;
2aa47728
NC
655 }
656 if(got < sizeof(target)) {
808ad2d0
NC
657 where = "short recv";
658 goto abort;
2aa47728 659 }
bf357333 660
808ad2d0
NC
661 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
662 where = "no cmsg";
663 goto abort;
664 }
665 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
666 where = "wrong cmsg_len";
667 goto abort;
668 }
669 if(cmptr->cmsg_level != SOL_SOCKET) {
670 where = "wrong cmsg_level";
671 goto abort;
672 }
673 if(cmptr->cmsg_type != SCM_RIGHTS) {
674 where = "wrong cmsg_type";
675 goto abort;
676 }
bf357333
NC
677
678 got_fd = *(int*)CMSG_DATA(cmptr);
679 /* For our last little bit of trickery, put the file descriptor
680 back into Perl_debug_log, as if we never actually closed it
681 */
808ad2d0
NC
682 if(got_fd != debug_fd) {
683 if (dup2(got_fd, debug_fd) == -1) {
684 where = "dup2";
685 goto abort;
686 }
687 }
2aa47728 688 sv_dump(target);
bf357333 689
2aa47728
NC
690 PerlIO_flush(Perl_debug_log);
691
808ad2d0 692 got = write(sock, &success, sizeof(success));
2aa47728
NC
693
694 if(got < 0) {
808ad2d0
NC
695 where = "write failed";
696 goto abort;
2aa47728 697 }
808ad2d0
NC
698 if(got < sizeof(success)) {
699 where = "short write";
700 goto abort;
2aa47728
NC
701 }
702 }
703 _exit(0);
808ad2d0
NC
704 abort:
705 {
706 int send_errno = errno;
707 unsigned char length = (unsigned char) strlen(where);
708 struct iovec failure[3] = {
709 {(void*)&send_errno, sizeof(send_errno)},
710 {&length, 1},
711 {(void*)where, length}
712 };
713 int got = writev(sock, failure, 3);
714 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
715 in the parent if we try to read from the socketpair after the
716 child has exited, even if there was data to read.
717 So sleep a bit to give the parent a fighting chance of
718 reading the data. */
719 sleep(2);
720 _exit((got == -1) ? errno : 0);
721 }
bf357333 722 /* End of child. */
2aa47728 723 }
41e4abd8 724 PL_dumper_fd = fd[0];
2aa47728
NC
725 close(fd[1]);
726 }
727#endif
728
ff0cee69
PP
729 /* We must account for everything. */
730
731 /* Destroy the main CV and syntax tree */
37e77c23
FC
732 /* Set PL_curcop now, because destroying ops can cause new SVs
733 to be generated in Perl_pad_swipe, and when running with
734 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
735 op from which the filename structure member is copied. */
17fbfdf6 736 PL_curcop = &PL_compiling;
3280af22 737 if (PL_main_root) {
4e380990
DM
738 /* ensure comppad/curpad to refer to main's pad */
739 if (CvPADLIST(PL_main_cv)) {
740 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
741 }
3280af22 742 op_free(PL_main_root);
5f66b61c 743 PL_main_root = NULL;
a0d0e21e 744 }
5f66b61c 745 PL_main_start = NULL;
aac9d523
DM
746 /* note that PL_main_cv isn't usually actually freed at this point,
747 * due to the CvOUTSIDE refs from subs compiled within it. It will
748 * get freed once all the subs are freed in sv_clean_all(), for
749 * destruct_level > 0 */
3280af22 750 SvREFCNT_dec(PL_main_cv);
601f1833 751 PL_main_cv = NULL;
ca7b837b 752 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 753
13621cfb
NIS
754 /* Tell PerlIO we are about to tear things apart in case
755 we have layers which are using resources that should
756 be cleaned up now.
757 */
758
759 PerlIO_destruct(aTHX);
760
ddf23d4a
SM
761 /*
762 * Try to destruct global references. We do this first so that the
763 * destructors and destructees still exist. Some sv's might remain.
764 * Non-referenced objects are on their own.
765 */
766 sv_clean_objs();
8990e307 767
5cd24f17 768 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 769 SvREFCNT_dec(PL_warnhook);
a0714e2c 770 PL_warnhook = NULL;
3280af22 771 SvREFCNT_dec(PL_diehook);
a0714e2c 772 PL_diehook = NULL;
5cd24f17 773
4b556e6c 774 /* call exit list functions */
3280af22 775 while (PL_exitlistlen-- > 0)
acfe0abc 776 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 777
3280af22 778 Safefree(PL_exitlist);
4b556e6c 779
1c4916e5
CB
780 PL_exitlist = NULL;
781 PL_exitlistlen = 0;
782
a3e6e81e
NC
783 SvREFCNT_dec(PL_registered_mros);
784
551a8b83 785 /* jettison our possibly duplicated environment */
4b647fb0
DM
786 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
787 * so we certainly shouldn't free it here
788 */
2f42fcb0 789#ifndef PERL_MICRO
4b647fb0 790#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 791 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
792#ifdef USE_ITHREADS
793 /* only main thread can free environ[0] contents */
794 && PL_curinterp == aTHX
795#endif
796 )
797 {
551a8b83
JH
798 I32 i;
799
800 for (i = 0; environ[i]; i++)
4b420006 801 safesysfree(environ[i]);
0631ea03 802
4b420006
JH
803 /* Must use safesysfree() when working with environ. */
804 safesysfree(environ);
551a8b83
JH
805
806 environ = PL_origenviron;
807 }
808#endif
2f42fcb0 809#endif /* !PERL_MICRO */
551a8b83 810
30985c42
JH
811 if (destruct_level == 0) {
812
813 DEBUG_P(debprofdump());
814
815#if defined(PERLIO_LAYERS)
816 /* No more IO - including error messages ! */
817 PerlIO_cleanup(aTHX);
818#endif
819
820 CopFILE_free(&PL_compiling);
30985c42
JH
821
822 /* The exit() function will do everything that needs doing. */
823 return STATUS_EXIT;
824 }
825
5f8cb046
DM
826#ifdef USE_ITHREADS
827 /* the syntax tree is shared between clones
828 * so op_free(PL_main_root) only ReREFCNT_dec's
829 * REGEXPs in the parent interpreter
830 * we need to manually ReREFCNT_dec for the clones
831 */
0547a729
DM
832 {
833 I32 i = AvFILLp(PL_regex_padav);
834 SV **ary = AvARRAY(PL_regex_padav);
835
836 for (; i; i--) {
837 SvREFCNT_dec(ary[i]);
838 ary[i] = &PL_sv_undef;
839 }
840 }
5f8cb046
DM
841#endif
842
0547a729 843
ad64d0ec 844 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
845 PL_stashcache = NULL;
846
5f05dabc
PP
847 /* loosen bonds of global variables */
848
2f9285f8
DM
849 /* XXX can PL_parser still be non-null here? */
850 if(PL_parser && PL_parser->rsfp) {
851 (void)PerlIO_close(PL_parser->rsfp);
852 PL_parser->rsfp = NULL;
8ebc5c01
PP
853 }
854
84386e14
RGS
855 if (PL_minus_F) {
856 Safefree(PL_splitstr);
857 PL_splitstr = NULL;
858 }
859
8ebc5c01 860 /* switches */
3280af22
NIS
861 PL_minus_n = FALSE;
862 PL_minus_p = FALSE;
863 PL_minus_l = FALSE;
864 PL_minus_a = FALSE;
865 PL_minus_F = FALSE;
866 PL_doswitches = FALSE;
599cee73 867 PL_dowarn = G_WARN_OFF;
1a904fc8 868#ifdef PERL_SAWAMPERSAND
d3b97530 869 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 870#endif
3280af22
NIS
871 PL_unsafe = FALSE;
872
873 Safefree(PL_inplace);
bd61b366 874 PL_inplace = NULL;
a7cb1f99 875 SvREFCNT_dec(PL_patchlevel);
1e8125c6 876 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
877
878 if (PL_e_script) {
879 SvREFCNT_dec(PL_e_script);
a0714e2c 880 PL_e_script = NULL;
8ebc5c01
PP
881 }
882
bf9cdc68
RG
883 PL_perldb = 0;
884
8ebc5c01
PP
885 /* magical thingies */
886
e23d9e2f
CS
887 SvREFCNT_dec(PL_ofsgv); /* *, */
888 PL_ofsgv = NULL;
5f05dabc 889
7889fe52 890 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 891 PL_ors_sv = NULL;
8ebc5c01 892
3280af22 893 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 894 PL_rs = NULL;
dc92893f 895
d33b2eba 896 Safefree(PL_osname); /* $^O */
bd61b366 897 PL_osname = NULL;
5f05dabc 898
3280af22 899 SvREFCNT_dec(PL_statname);
a0714e2c
SS
900 PL_statname = NULL;
901 PL_statgv = NULL;
5f05dabc 902
8ebc5c01
PP
903 /* defgv, aka *_ should be taken care of elsewhere */
904
7d5ea4e7
GS
905 /* float buffer */
906 Safefree(PL_efloatbuf);
bd61b366 907 PL_efloatbuf = NULL;
7d5ea4e7
GS
908 PL_efloatsize = 0;
909
8ebc5c01 910 /* startup and shutdown function lists */
3280af22 911 SvREFCNT_dec(PL_beginav);
5a837c8f 912 SvREFCNT_dec(PL_beginav_save);
3280af22 913 SvREFCNT_dec(PL_endav);
7d30b5c4 914 SvREFCNT_dec(PL_checkav);
ece599bd 915 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
916 SvREFCNT_dec(PL_unitcheckav);
917 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 918 SvREFCNT_dec(PL_initav);
7d49f689
NC
919 PL_beginav = NULL;
920 PL_beginav_save = NULL;
921 PL_endav = NULL;
922 PL_checkav = NULL;
923 PL_checkav_save = NULL;
3c10abe3
AG
924 PL_unitcheckav = NULL;
925 PL_unitcheckav_save = NULL;
7d49f689 926 PL_initav = NULL;
5618dfe8 927
8ebc5c01 928 /* shortcuts just get cleared */
a0714e2c
SS
929 PL_envgv = NULL;
930 PL_incgv = NULL;
931 PL_hintgv = NULL;
932 PL_errgv = NULL;
933 PL_argvgv = NULL;
934 PL_argvoutgv = NULL;
935 PL_stdingv = NULL;
936 PL_stderrgv = NULL;
937 PL_last_in_gv = NULL;
938 PL_replgv = NULL;
939 PL_DBgv = NULL;
940 PL_DBline = NULL;
941 PL_DBsub = NULL;
942 PL_DBsingle = NULL;
943 PL_DBtrace = NULL;
944 PL_DBsignal = NULL;
601f1833 945 PL_DBcv = NULL;
7d49f689 946 PL_dbargs = NULL;
5c284bb0 947 PL_debstash = NULL;
8ebc5c01 948
7a1c5554 949 SvREFCNT_dec(PL_argvout_stack);
7d49f689 950 PL_argvout_stack = NULL;
8ebc5c01 951
5c831c24 952 SvREFCNT_dec(PL_modglobal);
5c284bb0 953 PL_modglobal = NULL;
5c831c24 954 SvREFCNT_dec(PL_preambleav);
7d49f689 955 PL_preambleav = NULL;
5c831c24 956 SvREFCNT_dec(PL_subname);
a0714e2c 957 PL_subname = NULL;
ca0c25f6 958#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 959 SvREFCNT_dec(PL_pidstatus);
5c284bb0 960 PL_pidstatus = NULL;
ca0c25f6 961#endif
5c831c24 962 SvREFCNT_dec(PL_toptarget);
a0714e2c 963 PL_toptarget = NULL;
5c831c24 964 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
965 PL_bodytarget = NULL;
966 PL_formtarget = NULL;
5c831c24 967
d33b2eba 968 /* free locale stuff */
b9582b6a 969#ifdef USE_LOCALE_COLLATE
d33b2eba 970 Safefree(PL_collation_name);
bd61b366 971 PL_collation_name = NULL;
b9582b6a 972#endif
d33b2eba 973
b9582b6a 974#ifdef USE_LOCALE_NUMERIC
d33b2eba 975 Safefree(PL_numeric_name);
bd61b366 976 PL_numeric_name = NULL;
a453c169 977 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 978 PL_numeric_radix_sv = NULL;
b9582b6a 979#endif
d33b2eba 980
9c0b6888
KW
981 /* clear character classes */
982 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
983 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
984 PL_utf8_swash_ptrs[i] = NULL;
985 }
5c831c24
GS
986 SvREFCNT_dec(PL_utf8_mark);
987 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 988 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 989 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 990 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
991 SvREFCNT_dec(PL_utf8_idstart);
992 SvREFCNT_dec(PL_utf8_idcont);
2726813d 993 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c
SS
994 PL_utf8_mark = NULL;
995 PL_utf8_toupper = NULL;
996 PL_utf8_totitle = NULL;
997 PL_utf8_tolower = NULL;
998 PL_utf8_tofold = NULL;
999 PL_utf8_idstart = NULL;
1000 PL_utf8_idcont = NULL;
2726813d 1001 PL_utf8_foldclosures = NULL;
86f72d56 1002 for (i = 0; i < POSIX_CC_COUNT; i++) {
30f9bdb0
KW
1003 SvREFCNT_dec(PL_Posix_ptrs[i]);
1004 PL_Posix_ptrs[i] = NULL;
1005
86f72d56
KW
1006 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1007 PL_L1Posix_ptrs[i] = NULL;
cac6e0ca
KW
1008
1009 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1010 PL_XPosix_ptrs[i] = NULL;
86f72d56 1011 }
5c831c24 1012
971a9dd3 1013 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1014 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1015 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1016 cophh_free(CopHINTHASH_get(&PL_compiling));
1017 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1018 CopFILE_free(&PL_compiling);
5c831c24 1019
a0d0e21e 1020 /* Prepare to destruct main symbol table. */
5f05dabc 1021
3280af22 1022 hv = PL_defstash;
ca556bcd
DM
1023 /* break ref loop *:: <=> %:: */
1024 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1025 PL_defstash = 0;
a0d0e21e 1026 SvREFCNT_dec(hv);
5c831c24 1027 SvREFCNT_dec(PL_curstname);
a0714e2c 1028 PL_curstname = NULL;
a0d0e21e 1029
5a844595
GS
1030 /* clear queued errors */
1031 SvREFCNT_dec(PL_errors);
a0714e2c 1032 PL_errors = NULL;
5a844595 1033
dd69841b
BB
1034 SvREFCNT_dec(PL_isarev);
1035
a0d0e21e 1036 FREETMPS;
9b387841 1037 if (destruct_level >= 2) {
3280af22 1038 if (PL_scopestack_ix != 0)
9b387841
NC
1039 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1040 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1041 (long)PL_scopestack_ix);
3280af22 1042 if (PL_savestack_ix != 0)
9b387841
NC
1043 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1044 "Unbalanced saves: %ld more saves than restores\n",
1045 (long)PL_savestack_ix);
3280af22 1046 if (PL_tmps_floor != -1)
9b387841
NC
1047 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1048 (long)PL_tmps_floor + 1);
a0d0e21e 1049 if (cxstack_ix != -1)
9b387841
NC
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1051 (long)cxstack_ix + 1);
a0d0e21e 1052 }
8990e307 1053
0547a729
DM
1054#ifdef USE_ITHREADS
1055 SvREFCNT_dec(PL_regex_padav);
1056 PL_regex_padav = NULL;
1057 PL_regex_pad = NULL;
1058#endif
1059
776df701 1060#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1061 /* the entries in this list are allocated via SV PVX's, so get freed
1062 * in sv_clean_all */
1063 Safefree(PL_my_cxt_list);
776df701 1064#endif
57bb2458 1065
8990e307 1066 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1067
1068 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1069 while (sv_clean_all() > 2)
5226ed68
JH
1070 ;
1071
23083432
FC
1072#ifdef USE_ITHREADS
1073 Safefree(PL_stashpad); /* must come after sv_clean_all */
1074#endif
1075
d4777f27
GS
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1078 PL_fdpid = NULL;
d33b2eba 1079
6c644e78
GS
1080#ifdef HAVE_INTERP_INTERN
1081 sys_intern_clear();
1082#endif
1083
6e72f9df
PP
1084 /* Destruct the global string table. */
1085 {
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
80459961
NC
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
6e72f9df 1091 */
80459961
NC
1092 I32 riter = 0;
1093 const I32 max = HvMAX(PL_strtab);
c4420975 1094 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1095 HE *hent = array[0];
1096
6e72f9df 1097 for (;;) {
0453d815 1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1099 HE * const next = HeNEXT(hent);
9014280d 1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1103 Safefree(hent);
1104 hent = next;
6e72f9df
PP
1105 }
1106 if (!hent) {
1107 if (++riter > max)
1108 break;
1109 hent = array[riter];
1110 }
1111 }
80459961
NC
1112
1113 Safefree(array);
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1116 }
3280af22 1117 SvREFCNT_dec(PL_strtab);
6e72f9df 1118
e652bb2f 1119#ifdef USE_ITHREADS
c21d1a0f 1120 /* free the pointer tables used for cloning */
a0739874 1121 ptr_table_free(PL_ptr_table);
bf9cdc68 1122 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1123#endif
a0739874 1124
d33b2eba
GS
1125 /* free special SVs */
1126
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1130 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1131
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1135 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1136
9f375a43
DM
1137 {
1138 int i;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1144 }
1145 }
1146
0453d815 1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1149
eba0f806
DM
1150#ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1152 SV* sva;
1153 SV* sv;
eb578fdb 1154 SV* svend;
eba0f806 1155
ad64d0ec 1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1159 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1161 " flags=0x%"UVxf
fd0854ff 1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1163 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1164 "serial %"UVuf"\n",
574b8821
NC
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1166 pTHX__VALUE,
fd0854ff
DM
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1172 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1173 sv->sv_debug_serial
fd0854ff 1174 );
2aa47728 1175#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1176 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1177#endif
eba0f806
DM
1178 }
1179 }
1180 }
1181 }
2aa47728
NC
1182#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 {
1184 int status;
1185 fd_set rset;
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1188 its exit status. */
1189 struct timeval waitfor = {4, 0};
41e4abd8 1190 int sock = PL_dumper_fd;
2aa47728
NC
1191
1192 shutdown(sock, 1);
1193 FD_ZERO(&rset);
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1197 close(sock);
1198 }
1199#endif
eba0f806 1200#endif
77abb4c6
NC
1201#ifdef DEBUG_LEAKING_SCALARS_ABORT
1202 if (PL_sv_count)
1203 abort();
1204#endif
bf9cdc68 1205 PL_sv_count = 0;
eba0f806 1206
56a2bab7 1207#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1208 /* No more IO - including error messages ! */
1209 PerlIO_cleanup(aTHX);
1210#endif
1211
9f4bd222 1212 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1213 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1214 for no arg - and will try and SvREFCNT_dec it.
1215 */
1216 SvREFCNT(&PL_sv_undef) = 0;
1217 SvREADONLY_off(&PL_sv_undef);
1218
3280af22 1219 Safefree(PL_origfilename);
bd61b366 1220 PL_origfilename = NULL;
43c5f42d 1221 Safefree(PL_reg_curpm);
82ba1be6 1222 Safefree(PL_reg_poscache);
dd28f7bb 1223 free_tied_hv_pool();
3280af22 1224 Safefree(PL_op_mask);
cf36064f 1225 Safefree(PL_psig_name);
bf9cdc68 1226 PL_psig_name = (SV**)NULL;
d525a7b2 1227 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1228 {
1229 /* We need to NULL PL_psig_pend first, so that
1230 signal handlers know not to use it */
1231 int *psig_save = PL_psig_pend;
1232 PL_psig_pend = (int*)NULL;
1233 Safefree(psig_save);
1234 }
6e72f9df 1235 nuke_stacks();
284167a5
SM
1236 TAINTING_set(FALSE);
1237 TAINT_WARN_set(FALSE);
3280af22 1238 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1239 PL_debug = 0;
ac27b0f5 1240
a0d0e21e 1241 DEBUG_P(debprofdump());
d33b2eba 1242
e5dd39fc 1243#ifdef USE_REENTRANT_API
10bc17b6 1244 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1245#endif
1246
612f20c3
GS
1247 sv_free_arenas();
1248
5d9a96ca
DM
1249 while (PL_regmatch_slab) {
1250 regmatch_slab *s = PL_regmatch_slab;
1251 PL_regmatch_slab = PL_regmatch_slab->next;
1252 Safefree(s);
1253 }
1254
fc36a67e
PP
1255 /* As the absolutely last thing, free the non-arena SV for mess() */
1256
3280af22 1257 if (PL_mess_sv) {
f350b448
NC
1258 /* we know that type == SVt_PVMG */
1259
9c63abab 1260 /* it could have accumulated taint magic */
f350b448
NC
1261 MAGIC* mg;
1262 MAGIC* moremagic;
1263 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1264 moremagic = mg->mg_moremagic;
1265 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1266 && mg->mg_len >= 0)
1267 Safefree(mg->mg_ptr);
1268 Safefree(mg);
9c63abab 1269 }
f350b448 1270
fc36a67e 1271 /* we know that type >= SVt_PV */
8bd4d4c5 1272 SvPV_free(PL_mess_sv);
3280af22
NIS
1273 Safefree(SvANY(PL_mess_sv));
1274 Safefree(PL_mess_sv);
a0714e2c 1275 PL_mess_sv = NULL;
fc36a67e 1276 }
37038d91 1277 return STATUS_EXIT;
79072805
LW
1278}
1279
954c1994
GS
1280/*
1281=for apidoc perl_free
1282
1283Releases a Perl interpreter. See L<perlembed>.
1284
1285=cut
1286*/
1287
79072805 1288void
0cb96387 1289perl_free(pTHXx)
79072805 1290{
5174512c
NC
1291 dVAR;
1292
7918f24d
NC
1293 PERL_ARGS_ASSERT_PERL_FREE;
1294
c301d606
DM
1295 if (PL_veto_cleanup)
1296 return;
1297
7cb608b5 1298#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1299 {
1300 /*
1301 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1302 * value as we're probably hunting memory leaks then
1303 */
36e77d41 1304 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1305 const U32 old_debug = PL_debug;
55ef9aae
MHM
1306 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1307 thread at thread exit. */
4fd0a9b8
NC
1308 if (DEBUG_m_TEST) {
1309 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1310 "free this thread's memory\n");
1311 PL_debug &= ~ DEBUG_m_FLAG;
1312 }
55ef9aae
MHM
1313 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1314 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1315 PL_debug = old_debug;
55ef9aae
MHM
1316 }
1317 }
7cb608b5
NC
1318#endif
1319
acfe0abc 1320#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1321# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1322 {
acfe0abc 1323# ifdef NETWARE
7af12a34 1324 void *host = nw_internal_host;
acfe0abc 1325# else
7af12a34 1326 void *host = w32_internal_host;
acfe0abc 1327# endif
7af12a34 1328 PerlMem_free(aTHXx);
acfe0abc 1329# ifdef NETWARE
7af12a34 1330 nw_delete_internal_host(host);
acfe0abc 1331# else
7af12a34 1332 win32_delete_internal_host(host);
acfe0abc 1333# endif
7af12a34 1334 }
1c0ca838
GS
1335# else
1336 PerlMem_free(aTHXx);
1337# endif
acfe0abc
GS
1338#else
1339 PerlMem_free(aTHXx);
76e3520e 1340#endif
79072805
LW
1341}
1342
b7f7fff6 1343#if defined(USE_ITHREADS)
aebd1ac7
GA
1344/* provide destructors to clean up the thread key when libperl is unloaded */
1345#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1346
826955bd 1347#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1348#pragma fini "perl_fini"
666ad1ec
GA
1349#elif defined(__sun) && !defined(__GNUC__)
1350#pragma fini (perl_fini)
aebd1ac7
GA
1351#endif
1352
0dbb1585
AL
1353static void
1354#if defined(__GNUC__)
1355__attribute__((destructor))
aebd1ac7 1356#endif
de009b76 1357perl_fini(void)
aebd1ac7 1358{
27da23d5 1359 dVAR;
c301d606 1360 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1361 FREE_THREAD_KEY;
1362}
1363
1364#endif /* WIN32 */
1365#endif /* THREADS */
1366
4b556e6c 1367void
864dbfa3 1368Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1369{
97aff369 1370 dVAR;
3280af22
NIS
1371 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1372 PL_exitlist[PL_exitlistlen].fn = fn;
1373 PL_exitlist[PL_exitlistlen].ptr = ptr;
1374 ++PL_exitlistlen;
4b556e6c
JD
1375}
1376
b7975bdd
NC
1377STATIC void
1378S_set_caret_X(pTHX) {
97aff369 1379 dVAR;
fafc274c 1380 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1381 if (tmpgv) {
0f1723e1 1382 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1383#if defined(OS2)
1384 sv_setpv(caret_x, os2_execname(aTHX));
1385#else
2982a345
NC
1386# ifdef USE_KERN_PROC_PATHNAME
1387 size_t size = 0;
1388 int mib[4];
1389 mib[0] = CTL_KERN;
1390 mib[1] = KERN_PROC;
1391 mib[2] = KERN_PROC_PATHNAME;
1392 mib[3] = -1;
1393
1394 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1395 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1396 sv_grow(caret_x, size);
1397
1398 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1399 && size > 2) {
1400 SvPOK_only(caret_x);
1401 SvCUR_set(caret_x, size - 1);
1402 SvTAINT(caret_x);
1403 return;
1404 }
1405 }
ae60cb46
NC
1406# elif defined(USE_NSGETEXECUTABLEPATH)
1407 char buf[1];
1408 uint32_t size = sizeof(buf);
ae60cb46
NC
1409
1410 _NSGetExecutablePath(buf, &size);
1411 if (size < MAXPATHLEN * MAXPATHLEN) {
1412 sv_grow(caret_x, size);
1413 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1414 char *const tidied = realpath(SvPVX(caret_x), NULL);
1415 if (tidied) {
1416 sv_setpv(caret_x, tidied);
1417 free(tidied);
1418 } else {
1419 SvPOK_only(caret_x);
1420 SvCUR_set(caret_x, size);
1421 }
1422 return;
1423 }
1424 }
2982a345 1425# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1426 char buf[MAXPATHLEN];
1427 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1428
1429 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1430 includes a spurious NUL which will cause $^X to fail in system
1431 or backticks (this will prevent extensions from being built and
1432 many tests from working). readlink is not meant to add a NUL.
1433 Normal readlink works fine.
1434 */
1435 if (len > 0 && buf[len-1] == '\0') {
1436 len--;
1437 }
1438
1439 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1440 returning the text "unknown" from the readlink rather than the path
1441 to the executable (or returning an error from the readlink). Any
1442 valid path has a '/' in it somewhere, so use that to validate the
1443 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1444 */
1445 if (len > 0 && memchr(buf, '/', len)) {
1446 sv_setpvn(caret_x, buf, len);
82552a95 1447 return;
700dd4f8 1448 }
82552a95
NC
1449# endif
1450 /* Fallback to this: */
0f1723e1 1451 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1452#endif
b7975bdd
NC
1453 }
1454}
1455
954c1994
GS
1456/*
1457=for apidoc perl_parse
1458
1459Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1460
1461=cut
1462*/
1463
03d9f026
FC
1464#define SET_CURSTASH(newstash) \
1465 if (PL_curstash != newstash) { \
1466 SvREFCNT_dec(PL_curstash); \
1467 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1468 }
1469
79072805 1470int
0cb96387 1471perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1472{
27da23d5 1473 dVAR;
6224f72b 1474 I32 oldscope;
6224f72b 1475 int ret;
db36c5a1 1476 dJMPENV;
8d063cd8 1477
7918f24d
NC
1478 PERL_ARGS_ASSERT_PERL_PARSE;
1479#ifndef MULTIPLICITY
ed6c66dd 1480 PERL_UNUSED_ARG(my_perl);
7918f24d 1481#endif
7dc86639 1482#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1483 {
7dc86639
YO
1484 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1485
1486 if (s && (atoi(s) == 1)) {
1487 unsigned char *seed= PERL_HASH_SEED;
1488 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1489 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1490 while (seed < seed_end) {
1491 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1492 }
6a5b4183
YO
1493#ifdef PERL_HASH_RANDOMIZE_KEYS
1494 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1495 PL_HASH_RAND_BITS_ENABLED,
1496 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1497#endif
7dc86639
YO
1498 PerlIO_printf(Perl_debug_log, "\n");
1499 }
b0891165
JH
1500 }
1501#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1502 PL_origargc = argc;
e2975953 1503 PL_origargv = argv;
a0d0e21e 1504
a2722ac9
GA
1505 if (PL_origalen != 0) {
1506 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1507 }
1508 else {
3cb9023d
JH
1509 /* Set PL_origalen be the sum of the contiguous argv[]
1510 * elements plus the size of the env in case that it is
e9137a8e 1511 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1512 * as the maximum modifiable length of $0. In the worst case
1513 * the area we are able to modify is limited to the size of
43c32782 1514 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1515 * --jhi */
e1ec3a88 1516 const char *s = NULL;
54bfe034 1517 int i;
1b6737cc 1518 const UV mask =
7d8e7db3 1519 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1520 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1521 const UV aligned =
43c32782
JH
1522 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1523
1524 /* See if all the arguments are contiguous in memory. Note
1525 * that 'contiguous' is a loose term because some platforms
1526 * align the argv[] and the envp[]. If the arguments look
1527 * like non-aligned, assume that they are 'strictly' or
1528 * 'traditionally' contiguous. If the arguments look like
1529 * aligned, we just check that they are within aligned
1530 * PTRSIZE bytes. As long as no system has something bizarre
1531 * like the argv[] interleaved with some other data, we are
1532 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1533 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1534 while (*s) s++;
1535 for (i = 1; i < PL_origargc; i++) {
1536 if ((PL_origargv[i] == s + 1
43c32782 1537#ifdef OS2
c8941eeb 1538 || PL_origargv[i] == s + 2
43c32782 1539#endif
c8941eeb
JH
1540 )
1541 ||
1542 (aligned &&
1543 (PL_origargv[i] > s &&
1544 PL_origargv[i] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1546 )
1547 {
1548 s = PL_origargv[i];
1549 while (*s) s++;
1550 }
1551 else
1552 break;
54bfe034 1553 }
54bfe034 1554 }
a4a109c2
JD
1555
1556#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1557 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1558 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1559 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1560 ||
1561 (aligned &&
1562 (PL_origenviron[0] > s &&
1563 PL_origenviron[0] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 )
1566 {
9d419b5f 1567#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1568 s = PL_origenviron[0];
1569 while (*s) s++;
1570#endif
bd61b366 1571 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1572 /* Force copy of environment. */
1573 for (i = 1; PL_origenviron[i]; i++) {
1574 if (PL_origenviron[i] == s + 1
1575 ||
1576 (aligned &&
1577 (PL_origenviron[i] > s &&
1578 PL_origenviron[i] <=
1579 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1580 )
1581 {
1582 s = PL_origenviron[i];
1583 while (*s) s++;
1584 }
1585 else
1586 break;
54bfe034 1587 }
43c32782 1588 }
54bfe034 1589 }
a4a109c2
JD
1590#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1591
2d2af554 1592 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1593 }
1594
3280af22 1595 if (PL_do_undump) {
a0d0e21e
LW
1596
1597 /* Come here if running an undumped a.out. */
1598
3280af22
NIS
1599 PL_origfilename = savepv(argv[0]);
1600 PL_do_undump = FALSE;
a0d0e21e 1601 cxstack_ix = -1; /* start label stack again */
748a9306 1602 init_ids();
284167a5 1603 assert (!TAINT_get);
b7975bdd
NC
1604 TAINT;
1605 S_set_caret_X(aTHX);
1606 TAINT_NOT;
a0d0e21e
LW
1607 init_postdump_symbols(argc,argv,env);
1608 return 0;
1609 }
1610
3280af22 1611 if (PL_main_root) {
3280af22 1612 op_free(PL_main_root);
5f66b61c 1613 PL_main_root = NULL;
ff0cee69 1614 }
5f66b61c 1615 PL_main_start = NULL;
3280af22 1616 SvREFCNT_dec(PL_main_cv);
601f1833 1617 PL_main_cv = NULL;
79072805 1618
3280af22
NIS
1619 time(&PL_basetime);
1620 oldscope = PL_scopestack_ix;
599cee73 1621 PL_dowarn = G_WARN_OFF;
f86702cc 1622
14dd3ad8 1623 JMPENV_PUSH(ret);
6224f72b 1624 switch (ret) {
312caa8e 1625 case 0:
14dd3ad8 1626 parse_body(env,xsinit);
9ebf26ad 1627 if (PL_unitcheckav) {
3c10abe3 1628 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1629 }
1630 if (PL_checkav) {
ca7b837b 1631 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1632 call_list(oldscope, PL_checkav);
9ebf26ad 1633 }
14dd3ad8
GS
1634 ret = 0;
1635 break;
6224f72b
GS
1636 case 1:
1637 STATUS_ALL_FAILURE;
1638 /* FALL THROUGH */
1639 case 2:
1640 /* my_exit() was called */
3280af22 1641 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1642 LEAVE;
1643 FREETMPS;
03d9f026 1644 SET_CURSTASH(PL_defstash);
9ebf26ad 1645 if (PL_unitcheckav) {
3c10abe3 1646 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1647 }
1648 if (PL_checkav) {
ca7b837b 1649 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1650 call_list(oldscope, PL_checkav);
9ebf26ad 1651 }
37038d91 1652 ret = STATUS_EXIT;
14dd3ad8 1653 break;
6224f72b 1654 case 3:
bf49b057 1655 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1656 ret = 1;
1657 break;
6224f72b 1658 }
14dd3ad8
GS
1659 JMPENV_POP;
1660 return ret;
1661}
1662
4a5df386
NC
1663/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1664 miniperl, and we need to see those flags reflected in the values here. */
1665
1666/* What this returns is subject to change. Use the public interface in Config.
1667 */
1668static void
1669S_Internals_V(pTHX_ CV *cv)
1670{
1671 dXSARGS;
1672#ifdef LOCAL_PATCH_COUNT
1673 const int local_patch_count = LOCAL_PATCH_COUNT;
1674#else
1675 const int local_patch_count = 0;
1676#endif
2dc296d2 1677 const int entries = 3 + local_patch_count;
4a5df386 1678 int i;
fe1c5936 1679 static const char non_bincompat_options[] =
4a5df386
NC
1680# ifdef DEBUGGING
1681 " DEBUGGING"
1682# endif
1683# ifdef NO_MATHOMS
0d311fbe 1684 " NO_MATHOMS"
4a5df386
NC
1685# endif
1686# ifdef PERL_DISABLE_PMC
1687 " PERL_DISABLE_PMC"
1688# endif
1689# ifdef PERL_DONT_CREATE_GVSV
1690 " PERL_DONT_CREATE_GVSV"
1691# endif
9a044a43
NC
1692# ifdef PERL_EXTERNAL_GLOB
1693 " PERL_EXTERNAL_GLOB"
1694# endif
4a5df386
NC
1695# ifdef PERL_IS_MINIPERL
1696 " PERL_IS_MINIPERL"
1697# endif
1698# ifdef PERL_MALLOC_WRAP
1699 " PERL_MALLOC_WRAP"
1700# endif
1701# ifdef PERL_MEM_LOG
1702 " PERL_MEM_LOG"
1703# endif
1704# ifdef PERL_MEM_LOG_NOIMPL
1705 " PERL_MEM_LOG_NOIMPL"
1706# endif
2542212d
DM
1707# ifdef PERL_NEW_COPY_ON_WRITE
1708 " PERL_NEW_COPY_ON_WRITE"
1709# endif
c3cf41ec
NC
1710# ifdef PERL_PRESERVE_IVUV
1711 " PERL_PRESERVE_IVUV"
1712# endif
c051e30b
NC
1713# ifdef PERL_RELOCATABLE_INCPUSH
1714 " PERL_RELOCATABLE_INCPUSH"
1715# endif
4a5df386
NC
1716# ifdef PERL_USE_DEVEL
1717 " PERL_USE_DEVEL"
1718# endif
1719# ifdef PERL_USE_SAFE_PUTENV
1720 " PERL_USE_SAFE_PUTENV"
1721# endif
a3749cf3
NC
1722# ifdef UNLINK_ALL_VERSIONS
1723 " UNLINK_ALL_VERSIONS"
1724# endif
de618ee4
NC
1725# ifdef USE_ATTRIBUTES_FOR_PERLIO
1726 " USE_ATTRIBUTES_FOR_PERLIO"
1727# endif
4a5df386
NC
1728# ifdef USE_FAST_STDIO
1729 " USE_FAST_STDIO"
1730# endif
98548bdf
NC
1731# ifdef USE_LOCALE
1732 " USE_LOCALE"
1733# endif
98548bdf
NC
1734# ifdef USE_LOCALE_CTYPE
1735 " USE_LOCALE_CTYPE"
1736# endif
5a8d8935
NC
1737# ifdef USE_PERL_ATOF
1738 " USE_PERL_ATOF"
1739# endif
0d311fbe
NC
1740# ifdef USE_SITECUSTOMIZE
1741 " USE_SITECUSTOMIZE"
1742# endif
4a5df386
NC
1743 ;
1744 PERL_UNUSED_ARG(cv);
1745 PERL_UNUSED_ARG(items);
1746
1747 EXTEND(SP, entries);
1748
1749 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1750 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1751 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1752
1753#ifdef __DATE__
1754# ifdef __TIME__
1755 PUSHs(Perl_newSVpvn_flags(aTHX_
1756 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1757 SVs_TEMP));
1758# else
1759 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1760 SVs_TEMP));
1761# endif
1762#else
1763 PUSHs(&PL_sv_undef);
1764#endif
1765
4a5df386
NC
1766 for (i = 1; i <= local_patch_count; i++) {
1767 /* This will be an undef, if PL_localpatches[i] is NULL. */
1768 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1769 }
1770
1771 XSRETURN(entries);
1772}
1773
be71fc8f
NC
1774#define INCPUSH_UNSHIFT 0x01
1775#define INCPUSH_ADD_OLD_VERS 0x02
1776#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1777#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1778#define INCPUSH_NOT_BASEDIR 0x10
1779#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1780#define INCPUSH_ADD_SUB_DIRS \
1781 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1782
312caa8e 1783STATIC void *
14dd3ad8 1784S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1785{
27da23d5 1786 dVAR;
2f9285f8 1787 PerlIO *rsfp;
312caa8e 1788 int argc = PL_origargc;
8f42b153 1789 char **argv = PL_origargv;
e1ec3a88 1790 const char *scriptname = NULL;
312caa8e 1791 VOL bool dosearch = FALSE;
eb578fdb 1792 char c;
737c24fc 1793 bool doextract = FALSE;
bd61b366 1794 const char *cddir = NULL;
ab019eaa 1795#ifdef USE_SITECUSTOMIZE
20ef40cf 1796 bool minus_f = FALSE;
ab019eaa 1797#endif
95670bde 1798 SV *linestr_sv = NULL;
5486870f 1799 bool add_read_e_script = FALSE;
87606032 1800 U32 lex_start_flags = 0;
009d90df 1801
ca7b837b 1802 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1803
6224f72b 1804 init_main_stash();
54310121 1805
c7030b81
NC
1806 {
1807 const char *s;
6224f72b
GS
1808 for (argc--,argv++; argc > 0; argc--,argv++) {
1809 if (argv[0][0] != '-' || !argv[0][1])
1810 break;
6224f72b
GS
1811 s = argv[0]+1;
1812 reswitch:
47f56822 1813 switch ((c = *s)) {
729a02f2 1814 case 'C':
1d5472a9
GS
1815#ifndef PERL_STRICT_CR
1816 case '\r':
1817#endif
6224f72b
GS
1818 case ' ':
1819 case '0':
1820 case 'F':
1821 case 'a':
1822 case 'c':
1823 case 'd':
1824 case 'D':
1825 case 'h':
1826 case 'i':
1827 case 'l':
1828 case 'M':
1829 case 'm':
1830 case 'n':
1831 case 'p':
1832 case 's':
1833 case 'u':
1834 case 'U':
1835 case 'v':
599cee73
PM
1836 case 'W':
1837 case 'X':
6224f72b 1838 case 'w':
97bd5664 1839 if ((s = moreswitches(s)))
6224f72b
GS
1840 goto reswitch;
1841 break;
33b78306 1842
1dbad523 1843 case 't':
284167a5
SM
1844#if SILENT_NO_TAINT_SUPPORT
1845 /* silently ignore */
1846#elif NO_TAINT_SUPPORT
1847 Perl_croak("This perl was compiled without taint support. "
1848 "Cowardly refusing to run with -t or -T flags");
1849#else
22f7c9c9 1850 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1851 if( !TAINTING_get ) {
1852 TAINT_WARN_set(TRUE);
1853 TAINTING_set(TRUE);
317ea90d 1854 }
284167a5 1855#endif
317ea90d
MS
1856 s++;
1857 goto reswitch;
6224f72b 1858 case 'T':
284167a5
SM
1859#if SILENT_NO_TAINT_SUPPORT
1860 /* silently ignore */
1861#elif NO_TAINT_SUPPORT
1862 Perl_croak("This perl was compiled without taint support. "
1863 "Cowardly refusing to run with -t or -T flags");
1864#else
22f7c9c9 1865 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1866 TAINTING_set(TRUE);
1867 TAINT_WARN_set(FALSE);
1868#endif
6224f72b
GS
1869 s++;
1870 goto reswitch;
f86702cc 1871
bc9b29db
RH
1872 case 'E':
1873 PL_minus_E = TRUE;
1874 /* FALL THROUGH */
6224f72b 1875 case 'e':
f20b2998 1876 forbid_setid('e', FALSE);
3280af22 1877 if (!PL_e_script) {
396482e1 1878 PL_e_script = newSVpvs("");
5486870f 1879 add_read_e_script = TRUE;
6224f72b
GS
1880 }
1881 if (*++s)
3280af22 1882 sv_catpv(PL_e_script, s);
6224f72b 1883 else if (argv[1]) {
3280af22 1884 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1885 argc--,argv++;
1886 }
1887 else
47f56822 1888 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1889 sv_catpvs(PL_e_script, "\n");
6224f72b 1890 break;
afe37c7d 1891
20ef40cf 1892 case 'f':
f5542d3a 1893#ifdef USE_SITECUSTOMIZE
20ef40cf 1894 minus_f = TRUE;
f5542d3a 1895#endif
20ef40cf
GA
1896 s++;
1897 goto reswitch;
1898
6224f72b 1899 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1900 forbid_setid('I', FALSE);
bd61b366 1901 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1902 argc--,argv++;
1903 }
6224f72b 1904 if (s && *s) {
0df16ed7 1905 STRLEN len = strlen(s);
55b4bc1c 1906 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1907 }
1908 else
a67e862a 1909 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1910 break;
6224f72b 1911 case 'S':
f20b2998 1912 forbid_setid('S', FALSE);
6224f72b
GS
1913 dosearch = TRUE;
1914 s++;
1915 goto reswitch;
1916 case 'V':
7edfd0ef
NC
1917 {
1918 SV *opts_prog;
1919
7edfd0ef 1920 if (*++s != ':') {
37ca4a5b 1921 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1922 }
1923 else {
1924 ++s;
1925 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1926 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1927 0, s, 0);
1928 s += strlen(s);
1929 }
37ca4a5b 1930 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1931 /* don't look for script or read stdin */
1932 scriptname = BIT_BUCKET;
1933 goto reswitch;
6224f72b 1934 }
6224f72b 1935 case 'x':
737c24fc 1936 doextract = TRUE;
6224f72b 1937 s++;
304334da 1938 if (*s)
f4c556ac 1939 cddir = s;
6224f72b
GS
1940 break;
1941 case 0:
1942 break;
1943 case '-':
1944 if (!*++s || isSPACE(*s)) {
1945 argc--,argv++;
1946 goto switch_end;
1947 }
ee8bc8b7
NC
1948 /* catch use of gnu style long options.
1949 Both of these exit immediately. */
1950 if (strEQ(s, "version"))
1951 minus_v();
1952 if (strEQ(s, "help"))
1953 usage();
6224f72b
GS
1954 s--;
1955 /* FALL THROUGH */
1956 default:
cea2e8a9 1957 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1958 }
1959 }
c7030b81
NC
1960 }
1961
6224f72b 1962 switch_end:
54310121 1963
c7030b81
NC
1964 {
1965 char *s;
1966
f675dbe5
CB
1967 if (
1968#ifndef SECURE_INTERNAL_GETENV
284167a5 1969 !TAINTING_get &&
f675dbe5 1970#endif
cf756827 1971 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1972 {
74288ac8
GS
1973 while (isSPACE(*s))
1974 s++;
317ea90d 1975 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
1976#if SILENT_NO_TAINT_SUPPORT
1977 /* silently ignore */
1978#elif NO_TAINT_SUPPORT
1979 Perl_croak("This perl was compiled without taint support. "
1980 "Cowardly refusing to run with -t or -T flags");
1981#else
22f7c9c9 1982 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1983 TAINTING_set(TRUE);
1984 TAINT_WARN_set(FALSE);
1985#endif
317ea90d 1986 }
74288ac8 1987 else {
bd61b366 1988 char *popt_copy = NULL;
74288ac8 1989 while (s && *s) {
54913509 1990 const char *d;
74288ac8
GS
1991 while (isSPACE(*s))
1992 s++;
1993 if (*s == '-') {
1994 s++;
1995 if (isSPACE(*s))
1996 continue;
1997 }
4ea8f8fb 1998 d = s;
74288ac8
GS
1999 if (!*s)
2000 break;
2b622f1a 2001 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2002 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2003 while (++s && *s) {
2004 if (isSPACE(*s)) {
cf756827 2005 if (!popt_copy) {
bfa6c418
NC
2006 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2007 s = popt_copy + (s - d);
2008 d = popt_copy;
cf756827 2009 }
4ea8f8fb
MS
2010 *s++ = '\0';
2011 break;
2012 }
2013 }
1c4db469 2014 if (*d == 't') {
284167a5
SM
2015#if SILENT_NO_TAINT_SUPPORT
2016 /* silently ignore */
2017#elif NO_TAINT_SUPPORT
2018 Perl_croak("This perl was compiled without taint support. "
2019 "Cowardly refusing to run with -t or -T flags");
2020#else
2021 if( !TAINTING_get) {
2022 TAINT_WARN_set(TRUE);
2023 TAINTING_set(TRUE);
317ea90d 2024 }
284167a5 2025#endif
1c4db469 2026 } else {
97bd5664 2027 moreswitches(d);
1c4db469 2028 }
6224f72b 2029 }
6224f72b
GS
2030 }
2031 }
c7030b81 2032 }
a0d0e21e 2033
c29067d7
CH
2034 /* Set $^X early so that it can be used for relocatable paths in @INC */
2035 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2036 assert (!TAINT_get);
c29067d7
CH
2037 TAINT;
2038 S_set_caret_X(aTHX);
2039 TAINT_NOT;
2040
43c0c913 2041#if defined(USE_SITECUSTOMIZE)
20ef40cf 2042 if (!minus_f) {
43c0c913 2043 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2044 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2045 ie a q() operator with a NUL byte as a the delimiter. This avoids
2046 problems with pathnames containing (say) ' */
43c0c913
NC
2047# ifdef PERL_IS_MINIPERL
2048 AV *const inc = GvAV(PL_incgv);
2049 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2050
2051 if (inc0) {
2052 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2053 Perl_newSVpvf(aTHX_
fc81b718
NC
2054 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2055 0, *inc0, 0,
2056 0, *inc0, 0));
43c0c913
NC
2057 }
2058# else
2059 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2060 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2061 if (raw_sitelib) {
2062 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2063 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2064 INCPUSH_CAN_RELOCATE);
2065 const char *const sitelib = SvPVX(sitelib_sv);
2066 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2067 Perl_newSVpvf(aTHX_
2068 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2069 0, sitelib, 0,
2070 0, sitelib, 0));
2071 assert (SvREFCNT(sitelib_sv) == 1);
2072 SvREFCNT_dec(sitelib_sv);
2073 }
43c0c913 2074# endif
20ef40cf
GA
2075 }
2076#endif
2077
6224f72b
GS
2078 if (!scriptname)
2079 scriptname = argv[0];
3280af22 2080 if (PL_e_script) {
6224f72b
GS
2081 argc++,argv--;
2082 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2083 }
bd61b366 2084 else if (scriptname == NULL) {
6224f72b
GS
2085#ifdef MSDOS
2086 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2087 moreswitches("h");
6224f72b
GS
2088#endif
2089 scriptname = "-";
2090 }
2091
284167a5 2092 assert (!TAINT_get);
2cace6ac 2093 init_perllib();
6224f72b 2094
a52eba0e 2095 {
f20b2998 2096 bool suidscript = FALSE;
829372d3 2097
8d113837 2098 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2099 if (!rsfp) {
2100 rsfp = PerlIO_stdin();
87606032 2101 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2102 }
6224f72b 2103
b24bc095 2104 validate_suid(rsfp);
6224f72b 2105
64ca3a65 2106#ifndef PERL_MICRO
a52eba0e
NC
2107# if defined(SIGCHLD) || defined(SIGCLD)
2108 {
2109# ifndef SIGCHLD
2110# define SIGCHLD SIGCLD
2111# endif
2112 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2113 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2114 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2115 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2116 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2117 }
0b5b802d 2118 }
a52eba0e 2119# endif
64ca3a65 2120#endif
0b5b802d 2121
737c24fc 2122 if (doextract) {
faef540c 2123
f20b2998 2124 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2125 setuid scripts. */
2126 forbid_setid('x', suidscript);
f20b2998 2127 /* Hence you can't get here if suidscript is true */
faef540c 2128
95670bde
NC
2129 linestr_sv = newSV_type(SVt_PV);
2130 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2131 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2132 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2133 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2134 }
f4c556ac 2135 }
6224f72b 2136
ea726b52 2137 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2138 CvUNIQUE_on(PL_compcv);
2139
dd2155a4 2140 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2141
dd69841b
BB
2142 PL_isarev = newHV();
2143
0c4f7ff0 2144 boot_core_PerlIO();
6224f72b 2145 boot_core_UNIVERSAL();
e1a479c5 2146 boot_core_mro();
4a5df386 2147 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2148
2149 if (xsinit)
acfe0abc 2150 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2151#ifndef PERL_MICRO
739a0b84 2152#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2153 init_os_extras();
6224f72b 2154#endif
64ca3a65 2155#endif
6224f72b 2156
29209bc5 2157#ifdef USE_SOCKS
1b9c9cf5
DH
2158# ifdef HAS_SOCKS5_INIT
2159 socks5_init(argv[0]);
2160# else
29209bc5 2161 SOCKSinit(argv[0]);
1b9c9cf5 2162# endif
ac27b0f5 2163#endif
29209bc5 2164
6224f72b
GS
2165 init_predump_symbols();
2166 /* init_postdump_symbols not currently designed to be called */
2167 /* more than once (ENV isn't cleared first, for example) */
2168 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2169 if (!PL_do_undump)
6224f72b
GS
2170 init_postdump_symbols(argc,argv,env);
2171
27da23d5
JH
2172 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2173 * or explicitly in some platforms.
085a54d9 2174 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2175 * look like the user wants to use UTF-8. */
a0fd4948 2176#if defined(__SYMBIAN32__)
27da23d5
JH
2177 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2178#endif
e27b5b51 2179# ifndef PERL_IS_MINIPERL
06e66572
JH
2180 if (PL_unicode) {
2181 /* Requires init_predump_symbols(). */
a05d7ebb 2182 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2183 IO* io;
2184 PerlIO* fp;
2185 SV* sv;
2186
a05d7ebb 2187 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2188 * and the default open disciplines. */
a05d7ebb
JH
2189 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2190 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2191 (fp = IoIFP(io)))
2192 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2193 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2194 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2195 (fp = IoOFP(io)))
2196 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2197 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2198 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2199 (fp = IoOFP(io)))
2200 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2201 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2202 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2203 SVt_PV)))) {
a05d7ebb
JH
2204 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2205 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2206 if (in) {
2207 if (out)
76f68e9b 2208 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2209 else
76f68e9b 2210 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2211 }
2212 else if (out)
76f68e9b 2213 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2214 SvSETMAGIC(sv);
2215 }
b310b053
JH
2216 }
2217 }
e27b5b51 2218#endif
b310b053 2219
c7030b81
NC
2220 {
2221 const char *s;
4ffa73a3
JH
2222 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2223 if (strEQ(s, "unsafe"))
2224 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2225 else if (strEQ(s, "safe"))
2226 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2227 else
2228 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2229 }
c7030b81 2230 }
4ffa73a3 2231
81d86705 2232#ifdef PERL_MAD
c7030b81
NC
2233 {
2234 const char *s;
284167a5 2235 if (!TAINTING_get &&
2cc12391 2236 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2237 PL_madskills = 1;
2238 PL_minus_c = 1;
2239 if (!s || !s[0])
2240 PL_xmlfp = PerlIO_stdout();
2241 else {
2242 PL_xmlfp = PerlIO_open(s, "w");
2243 if (!PL_xmlfp)
2244 Perl_croak(aTHX_ "Can't open %s", s);
2245 }
1a9a51d4 2246 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2247 }
c7030b81
NC
2248 }
2249
2250 {
2251 const char *s;
81d86705
NC
2252 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2253 PL_madskills = atoi(s);
1a9a51d4 2254 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2255 }
c7030b81 2256 }
81d86705
NC
2257#endif
2258
87606032 2259 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2260 SvREFCNT_dec(linestr_sv);
95670bde 2261
219f7226 2262 PL_subname = newSVpvs("main");
6224f72b 2263
5486870f
DM
2264 if (add_read_e_script)
2265 filter_add(read_e_script, NULL);
2266
6224f72b
GS
2267 /* now parse the script */
2268
93189314 2269 SETERRNO(0,SS_NORMAL);
28ac2b49 2270 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2271 if (PL_minus_c)
cea2e8a9 2272 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2273 else {
cea2e8a9 2274 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2275 PL_origfilename);
6224f72b
GS
2276 }
2277 }
57843af0 2278 CopLINE_set(PL_curcop, 0);
03d9f026 2279 SET_CURSTASH(PL_defstash);
3280af22
NIS
2280 if (PL_e_script) {
2281 SvREFCNT_dec(PL_e_script);
a0714e2c 2282 PL_e_script = NULL;
6224f72b
GS
2283 }
2284
3280af22 2285 if (PL_do_undump)
6224f72b
GS
2286 my_unexec();
2287
57843af0
GS
2288 if (isWARN_ONCE) {
2289 SAVECOPFILE(PL_curcop);
2290 SAVECOPLINE(PL_curcop);
3280af22 2291 gv_check(PL_defstash);
57843af0 2292 }
6224f72b
GS
2293
2294 LEAVE;
2295 FREETMPS;
2296
2297#ifdef MYMALLOC
f6a607bc
RGS
2298 {
2299 const char *s;
6224f72b
GS
2300 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2301 dump_mstats("after compilation:");
f6a607bc 2302 }
6224f72b
GS
2303#endif
2304
2305 ENTER;
febb3a6d 2306 PL_restartjmpenv = NULL;
3280af22 2307 PL_restartop = 0;
312caa8e 2308 return NULL;
6224f72b
GS
2309}
2310
954c1994
GS
2311/*
2312=for apidoc perl_run
2313
2314Tells a Perl interpreter to run. See L<perlembed>.
2315
2316=cut
2317*/
2318
6224f72b 2319int
0cb96387 2320perl_run(pTHXx)
6224f72b 2321{
97aff369 2322 dVAR;
6224f72b 2323 I32 oldscope;
14dd3ad8 2324 int ret = 0;
db36c5a1 2325 dJMPENV;
6224f72b 2326
7918f24d
NC
2327 PERL_ARGS_ASSERT_PERL_RUN;
2328#ifndef MULTIPLICITY
ed6c66dd 2329 PERL_UNUSED_ARG(my_perl);
7918f24d 2330#endif
9d4ba2ae 2331
3280af22 2332 oldscope = PL_scopestack_ix;
96e176bf
CL
2333#ifdef VMS
2334 VMSISH_HUSHED = 0;
2335#endif
6224f72b 2336
14dd3ad8 2337 JMPENV_PUSH(ret);
6224f72b
GS
2338 switch (ret) {
2339 case 1:
2340 cxstack_ix = -1; /* start context stack again */
312caa8e 2341 goto redo_body;
14dd3ad8 2342 case 0: /* normal completion */
14dd3ad8
GS
2343 redo_body:
2344 run_body(oldscope);
14dd3ad8
GS
2345 /* FALL THROUGH */
2346 case 2: /* my_exit() */
3280af22 2347 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2348 LEAVE;
2349 FREETMPS;
03d9f026 2350 SET_CURSTASH(PL_defstash);
3a1ee7e8 2351 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2352 PL_endav && !PL_minus_c) {
ca7b837b 2353 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2354 call_list(oldscope, PL_endav);
9ebf26ad 2355 }
6224f72b
GS
2356#ifdef MYMALLOC
2357 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2358 dump_mstats("after execution: ");
2359#endif
37038d91 2360 ret = STATUS_EXIT;
14dd3ad8 2361 break;
6224f72b 2362 case 3:
312caa8e
CS
2363 if (PL_restartop) {
2364 POPSTACK_TO(PL_mainstack);
2365 goto redo_body;
6224f72b 2366 }
5637ef5b 2367 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2368 FREETMPS;
14dd3ad8
GS
2369 ret = 1;
2370 break;
6224f72b
GS
2371 }
2372
14dd3ad8
GS
2373 JMPENV_POP;
2374 return ret;
312caa8e
CS
2375}
2376
dd374669 2377STATIC void
14dd3ad8
GS
2378S_run_body(pTHX_ I32 oldscope)
2379{
97aff369 2380 dVAR;
d3b97530
DM
2381 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2382 PL_sawampersand ? "Enabling" : "Omitting",
2383 (unsigned int)(PL_sawampersand)));
6224f72b 2384
3280af22 2385 if (!PL_restartop) {
81d86705
NC
2386#ifdef PERL_MAD
2387 if (PL_xmlfp) {
2388 xmldump_all();
2389 exit(0); /* less likely to core dump than my_exit(0) */
2390 }
2391#endif
cf2782cd 2392#ifdef DEBUGGING
f0e3f042
CS
2393 if (DEBUG_x_TEST || DEBUG_B_TEST)
2394 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2395 if (!DEBUG_q_TEST)
2396 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2397#endif
6224f72b 2398
3280af22 2399 if (PL_minus_c) {
bf49b057 2400 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2401 my_exit(0);
2402 }
3280af22 2403 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2404 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2405 if (PL_initav) {
ca7b837b 2406 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2407 call_list(oldscope, PL_initav);
9ebf26ad 2408 }
f1fac472 2409#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2410 if (PL_main_root && PL_main_root->op_slabbed)
2411 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2412#endif
6224f72b
GS
2413 }
2414
2415 /* do it */
2416
ca7b837b 2417 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2418
3280af22 2419 if (PL_restartop) {
febb3a6d 2420 PL_restartjmpenv = NULL;
533c011a 2421 PL_op = PL_restartop;
3280af22 2422 PL_restartop = 0;
cea2e8a9 2423 CALLRUNOPS(aTHX);
6224f72b 2424 }
3280af22
NIS
2425 else if (PL_main_start) {
2426 CvDEPTH(PL_main_cv) = 1;
533c011a 2427 PL_op = PL_main_start;
cea2e8a9 2428 CALLRUNOPS(aTHX);
6224f72b 2429 }
f6b3007c 2430 my_exit(0);
118e2215 2431 assert(0); /* NOTREACHED */
6224f72b
GS
2432}
2433
954c1994 2434/*
ccfc67b7
JH
2435=head1 SV Manipulation Functions
2436
954c1994
GS
2437=for apidoc p||get_sv
2438
64ace3f8
NC
2439Returns the SV of the specified Perl scalar. C<flags> are passed to
2440C<gv_fetchpv>. If C<GV_ADD> is set and the
2441Perl variable does not exist then it will be created. If C<flags> is zero
2442and the variable does not exist then NULL is returned.
954c1994
GS
2443
2444=cut
2445*/
2446
6224f72b 2447SV*
64ace3f8 2448Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2449{
2450 GV *gv;
7918f24d
NC
2451
2452 PERL_ARGS_ASSERT_GET_SV;
2453
64ace3f8 2454 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2455 if (gv)
2456 return GvSV(gv);
a0714e2c 2457 return NULL;
6224f72b
GS
2458}
2459
954c1994 2460/*
ccfc67b7
JH
2461=head1 Array Manipulation Functions
2462
954c1994
GS
2463=for apidoc p||get_av
2464
f0b90de1
SF
2465Returns the AV of the specified Perl global or package array with the given
2466name (so it won't work on lexical variables). C<flags> are passed
2467to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2468Perl variable does not exist then it will be created. If C<flags> is zero
2469and the variable does not exist then NULL is returned.
954c1994 2470
f0b90de1
SF
2471Perl equivalent: C<@{"$name"}>.
2472
954c1994
GS
2473=cut
2474*/
2475
6224f72b 2476AV*
cbfd0a87 2477Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2478{
cbfd0a87 2479 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2480
2481 PERL_ARGS_ASSERT_GET_AV;
2482
cbfd0a87 2483 if (flags)
6224f72b
GS
2484 return GvAVn(gv);
2485 if (gv)
2486 return GvAV(gv);
7d49f689 2487 return NULL;
6224f72b
GS
2488}
2489
954c1994 2490/*
ccfc67b7
JH
2491=head1 Hash Manipulation Functions
2492
954c1994
GS
2493=for apidoc p||get_hv
2494
6673a63c
NC
2495Returns the HV of the specified Perl hash. C<flags> are passed to
2496C<gv_fetchpv>. If C<GV_ADD> is set and the
2497Perl variable does not exist then it will be created. If C<flags> is zero
2498and the variable does not exist then NULL is returned.
954c1994
GS
2499
2500=cut
2501*/
2502
6224f72b 2503HV*
6673a63c 2504Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2505{
6673a63c 2506 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2507
2508 PERL_ARGS_ASSERT_GET_HV;
2509
6673a63c 2510 if (flags)
a0d0e21e
LW
2511 return GvHVn(gv);
2512 if (gv)
2513 return GvHV(gv);
5c284bb0 2514 return NULL;
a0d0e21e
LW
2515}
2516
954c1994 2517/*
ccfc67b7
JH
2518=head1 CV Manipulation Functions
2519
780a5241
NC
2520=for apidoc p||get_cvn_flags
2521
2522Returns the CV of the specified Perl subroutine. C<flags> are passed to
2523C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2524exist then it will be declared (which has the same effect as saying
2525C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2526then NULL is returned.
2527
954c1994
GS
2528=for apidoc p||get_cv
2529
780a5241 2530Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2531
2532=cut
2533*/
2534
a0d0e21e 2535CV*
780a5241 2536Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2537{
780a5241 2538 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2539
2540 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2541
334dda80
FC
2542 /* XXX this is probably not what they think they're getting.
2543 * It has the same effect as "sub name;", i.e. just a forward
2544 * declaration! */
780a5241 2545 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2546 return newSTUB(gv,0);
780a5241 2547 }
a0d0e21e 2548 if (gv)
8ebc5c01 2549 return GvCVu(gv);
601f1833 2550 return NULL;
a0d0e21e
LW
2551}
2552
2c67934f
NC
2553/* Nothing in core calls this now, but we can't replace it with a macro and
2554 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2555CV*
2556Perl_get_cv(pTHX_ const char *name, I32 flags)
2557{
7918f24d
NC
2558 PERL_ARGS_ASSERT_GET_CV;
2559
780a5241
NC
2560 return get_cvn_flags(name, strlen(name), flags);
2561}
2562
79072805
LW
2563/* Be sure to refetch the stack pointer after calling these routines. */
2564
954c1994 2565/*
ccfc67b7
JH
2566
2567=head1 Callback Functions
2568
954c1994
GS
2569=for apidoc p||call_argv
2570
f0b90de1
SF
2571Performs a callback to the specified named and package-scoped Perl subroutine
2572with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2573
2574Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2575
2576=cut
2577*/
2578
a0d0e21e 2579I32
5aaab254 2580Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2581
8ac85365
NIS
2582 /* See G_* flags in cop.h */
2583 /* null terminated arg list */
8990e307 2584{
97aff369 2585 dVAR;
a0d0e21e 2586 dSP;
8990e307 2587
7918f24d
NC
2588 PERL_ARGS_ASSERT_CALL_ARGV;
2589
924508f0 2590 PUSHMARK(SP);
a0d0e21e 2591 if (argv) {
8990e307 2592 while (*argv) {
6e449a3a 2593 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2594 argv++;
2595 }
a0d0e21e 2596 PUTBACK;
8990e307 2597 }
864dbfa3 2598 return call_pv(sub_name, flags);
8990e307
LW
2599}
2600
954c1994
GS
2601/*
2602=for apidoc p||call_pv
2603
2604Performs a callback to the specified Perl sub. See L<perlcall>.
2605
2606=cut
2607*/
2608
a0d0e21e 2609I32
864dbfa3 2610Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2611 /* name of the subroutine */
2612 /* See G_* flags in cop.h */
a0d0e21e 2613{
7918f24d
NC
2614 PERL_ARGS_ASSERT_CALL_PV;
2615
0da0e728 2616 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2617}
2618
954c1994
GS
2619/*
2620=for apidoc p||call_method
2621
2622Performs a callback to the specified Perl method. The blessed object must
2623be on the stack. See L<perlcall>.
2624
2625=cut
2626*/
2627
a0d0e21e 2628I32
864dbfa3 2629Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2630 /* name of the subroutine */
2631 /* See G_* flags in cop.h */
a0d0e21e 2632{
46ca9bac 2633 STRLEN len;
7918f24d
NC
2634 PERL_ARGS_ASSERT_CALL_METHOD;
2635
46ca9bac 2636 len = strlen(methname);
2637
2638 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2639 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2640}
2641
2642/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2643/*
2644=for apidoc p||call_sv
2645
2646Performs a callback to the Perl sub whose name is in the SV. See
2647L<perlcall>.
2648
2649=cut
2650*/
2651
a0d0e21e 2652I32
001d637e 2653Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2654 /* See G_* flags in cop.h */
a0d0e21e 2655{
27da23d5 2656 dVAR; dSP;
a0d0e21e 2657 LOGOP myop; /* fake syntax tree node */
968b3946 2658 UNOP method_op;
aa689395 2659 I32 oldmark;
8ea43dc8 2660 VOL I32 retval = 0;
a0d0e21e 2661 I32 oldscope;
54310121 2662 bool oldcatch = CATCH_GET;
6224f72b 2663 int ret;
c4420975 2664 OP* const oldop = PL_op;
db36c5a1 2665 dJMPENV;
1e422769 2666
7918f24d
NC
2667 PERL_ARGS_ASSERT_CALL_SV;
2668
a0d0e21e
LW
2669 if (flags & G_DISCARD) {
2670 ENTER;
2671 SAVETMPS;
2672 }
2f8edad0
NC
2673 if (!(flags & G_WANT)) {
2674 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2675 */
2676 flags |= G_SCALAR;
2677 }
a0d0e21e 2678
aa689395 2679 Zero(&myop, 1, LOGOP);
f51d4af5 2680 if (!(flags & G_NOARGS))
aa689395 2681 myop.op_flags |= OPf_STACKED;
4f911530 2682 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2683 SAVEOP();
533c011a 2684 PL_op = (OP*)&myop;
aa689395 2685
3280af22
NIS
2686 EXTEND(PL_stack_sp, 1);
2687 *++PL_stack_sp = sv;
aa689395 2688 oldmark = TOPMARK;
3280af22 2689 oldscope = PL_scopestack_ix;
a0d0e21e 2690
3280af22 2691 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2692 /* Handle first BEGIN of -d. */
3280af22 2693 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2694 /* Try harder, since this may have been a sighandler, thus
2695 * curstash may be meaningless. */
ea726b52 2696 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2697 && !(flags & G_NODEBUG))
5ff48db8 2698 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2699
968b3946
GS
2700 if (flags & G_METHOD) {
2701 Zero(&method_op, 1, UNOP);
5ff48db8 2702 method_op.op_next = (OP*)&myop;
968b3946 2703 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2704 method_op.op_type = OP_METHOD;
968b3946 2705 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2706 myop.op_type = OP_ENTERSUB;
f39d0b86 2707 PL_op = (OP*)&method_op;
968b3946
GS
2708 }
2709
312caa8e 2710 if (!(flags & G_EVAL)) {
0cdb2077 2711 CATCH_SET(TRUE);
d6f07c05 2712 CALL_BODY_SUB((OP*)&myop);
312caa8e 2713 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2714 CATCH_SET(oldcatch);
312caa8e
CS
2715 }
2716 else {
d78bda3d 2717 myop.op_other = (OP*)&myop;
3280af22 2718 PL_markstack_ptr--;
edb2152a 2719 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2720 PL_markstack_ptr++;
a0d0e21e 2721
14dd3ad8 2722 JMPENV_PUSH(ret);
edb2152a 2723
6224f72b
GS
2724 switch (ret) {
2725 case 0:
14dd3ad8 2726 redo_body:
d6f07c05 2727 CALL_BODY_SUB((OP*)&myop);
312caa8e 2728 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2729 if (!(flags & G_KEEPERR)) {
ab69dbc2 2730 CLEAR_ERRSV();
8433848b 2731 }
a0d0e21e 2732 break;
6224f72b 2733 case 1:
f86702cc 2734 STATUS_ALL_FAILURE;
a0d0e21e 2735 /* FALL THROUGH */
6224f72b 2736 case 2:
a0d0e21e 2737 /* my_exit() was called */
03d9f026 2738 SET_CURSTASH(PL_defstash);
a0d0e21e 2739 FREETMPS;
14dd3ad8 2740 JMPENV_POP;
f86702cc 2741 my_exit_jump();
118e2215 2742 assert(0); /* NOTREACHED */
6224f72b 2743 case 3:
3280af22 2744 if (PL_restartop) {
febb3a6d 2745 PL_restartjmpenv = NULL;
533c011a 2746 PL_op = PL_restartop;
3280af22 2747 PL_restartop = 0;
312caa8e 2748 goto redo_body;
a0d0e21e 2749 }
3280af22 2750 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2751 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2752 retval = 0;
2753 else {
2754 retval = 1;
3280af22 2755 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2756 }
312caa8e 2757 break;
a0d0e21e 2758 }
a0d0e21e 2759
edb2152a
NC
2760 if (PL_scopestack_ix > oldscope)
2761 delete_eval_scope();
14dd3ad8 2762 JMPENV_POP;
a0d0e21e 2763 }
1e422769 2764
a0d0e21e 2765 if (flags & G_DISCARD) {
3280af22 2766 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2767 retval = 0;
2768 FREETMPS;
2769 LEAVE;
2770 }
533c011a 2771 PL_op = oldop;
a0d0e21e
LW
2772 return retval;
2773}
2774
6e72f9df 2775/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2776
954c1994
GS
2777/*
2778=for apidoc p||eval_sv
2779
be064c4a
DM
2780Tells Perl to C<eval> the string in the SV. It supports the same flags
2781as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2782
2783=cut
2784*/
2785
a0d0e21e 2786I32
864dbfa3 2787Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2788
8ac85365 2789 /* See G_* flags in cop.h */
a0d0e21e 2790{
97aff369 2791 dVAR;
924508f0 2792 dSP;
a0d0e21e 2793 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2794 VOL I32 oldmark = SP - PL_stack_base;
2795 VOL I32 retval = 0;
6224f72b 2796 int ret;
c4420975 2797 OP* const oldop = PL_op;
db36c5a1 2798 dJMPENV;
84902520 2799
7918f24d
NC
2800 PERL_ARGS_ASSERT_EVAL_SV;
2801
4633a7c4
LW
2802 if (flags & G_DISCARD) {
2803 ENTER;
2804 SAVETMPS;
2805 }
2806
462e5cf6 2807 SAVEOP();
533c011a 2808 PL_op = (OP*)&myop;
5ff48db8 2809 Zero(&myop, 1, UNOP);
3280af22
NIS
2810 EXTEND(PL_stack_sp, 1);
2811 *++PL_stack_sp = sv;
79072805 2812
4633a7c4
LW
2813 if (!(flags & G_NOARGS))
2814 myop.op_flags = OPf_STACKED;
6e72f9df 2815 myop.op_type = OP_ENTEREVAL;
4f911530 2816 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2817 if (flags & G_KEEPERR)
2818 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2819
2820 if (flags & G_RE_REPARSING)
2821 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2822
dedbcade
DM
2823 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2824 * before a PUSHEVAL, which corrupts the stack after a croak */
2825 TAINT_PROPER("eval_sv()");
2826
14dd3ad8 2827 JMPENV_PUSH(ret);
6224f72b
GS
2828 switch (ret) {
2829 case 0:
14dd3ad8 2830 redo_body:
2ba65d5f
DM
2831 if (PL_op == (OP*)(&myop)) {
2832 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2833 if (!PL_op)
2834 goto fail; /* failed in compilation */
2835 }
4aca2f62 2836 CALLRUNOPS(aTHX);
312caa8e 2837 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2838 if (!(flags & G_KEEPERR)) {
ab69dbc2 2839 CLEAR_ERRSV();
8433848b 2840 }
4633a7c4 2841 break;
6224f72b 2842 case 1:
f86702cc 2843 STATUS_ALL_FAILURE;
4633a7c4 2844 /* FALL THROUGH */
6224f72b 2845 case 2:
4633a7c4 2846 /* my_exit() was called */
03d9f026 2847 SET_CURSTASH(PL_defstash);
4633a7c4 2848 FREETMPS;
14dd3ad8 2849 JMPENV_POP;
f86702cc 2850 my_exit_jump();
118e2215 2851 assert(0); /* NOTREACHED */
6224f72b 2852 case 3:
3280af22 2853 if (PL_restartop) {
febb3a6d 2854 PL_restartjmpenv = NULL;
533c011a 2855 PL_op = PL_restartop;
3280af22 2856 PL_restartop = 0;
312caa8e 2857 goto redo_body;
4633a7c4 2858 }
4aca2f62 2859 fail:
3280af22 2860 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2861 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2862 retval = 0;
2863 else {
2864 retval = 1;
3280af22 2865 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2866 }
312caa8e 2867 break;
4633a7c4
LW
2868 }
2869
14dd3ad8 2870 JMPENV_POP;
4633a7c4 2871 if (flags & G_DISCARD) {
3280af22 2872 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2873 retval = 0;
2874 FREETMPS;
2875 LEAVE;
2876 }
533c011a 2877 PL_op = oldop;
4633a7c4
LW
2878 return retval;
2879}
2880
954c1994
GS
2881/*
2882=for apidoc p||eval_pv
2883
2884Tells Perl to C<eval> the given string and return an SV* result.
2885
2886=cut
2887*/
2888
137443ea 2889SV*
864dbfa3 2890Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2891{
97aff369 2892 dVAR;
137443ea
PP
2893 SV* sv = newSVpv(p, 0);
2894
7918f24d
NC
2895 PERL_ARGS_ASSERT_EVAL_PV;
2896
864dbfa3 2897 eval_sv(sv, G_SCALAR);
137443ea
PP
2898 SvREFCNT_dec(sv);
2899
ed1786ad
DD
2900 {
2901 dSP;
2902 sv = POPs;
2903 PUTBACK;
2904 }
137443ea 2905
eed484f9
DD
2906 /* just check empty string or undef? */
2907 if (croak_on_error) {
2908 SV * const errsv = ERRSV;
2909 if(SvTRUE_NN(errsv))
2910 /* replace with croak_sv? */
2911 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2912 }
137443ea
PP
2913
2914 return sv;
2915}
2916
4633a7c4
LW
2917/* Require a module. */
2918
954c1994 2919/*
ccfc67b7
JH
2920=head1 Embedding Functions
2921
954c1994
GS
2922=for apidoc p||require_pv
2923
7d3fb230
BS
2924Tells Perl to C<require> the file named by the string argument. It is
2925analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2926implemented that way; consider using load_module instead.
954c1994 2927
7d3fb230 2928=cut */
954c1994 2929
4633a7c4 2930void
864dbfa3 2931Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2932{
97aff369 2933 dVAR;
d3acc0f7 2934 dSP;
97aff369 2935 SV* sv;
7918f24d
NC
2936
2937 PERL_ARGS_ASSERT_REQUIRE_PV;
2938
e788e7d3 2939 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2940 PUTBACK;
be41e5d9
NC
2941 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2942 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2943 SPAGAIN;
2944 POPSTACK;
79072805
LW
2945}
2946
76e3520e 2947STATIC void
b6f82619 2948S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2949{
ab821d7f 2950 /* This message really ought to be max 23 lines.
75c72d73 2951 * Removed -h because the user already knows that option. Others? */
fb73857a 2952
1566c39d
NC
2953 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2954 minimum of 509 character string literals. */
27da23d5 2955 static const char * const usage_msg[] = {
1566c39d
NC
2956" -0[octal] specify record separator (\\0, if no argument)\n"
2957" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2958" -C[number/list] enables the listed Unicode features\n"
2959" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2960" -d[:debugger] run program under debugger\n"
2961" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2962" -e program one line of program (several -e's allowed, omit programfile)\n"
2963" -E program like -e, but enables all optional features\n"
2964" -f don't do $sitelib/sitecustomize.pl at startup\n"
2965" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2966" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2967" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2968" -l[octal] enable line ending processing, specifies line terminator\n"
2969" -[mM][-]module execute \"use/no module...\" before executing program\n"
2970" -n assume \"while (<>) { ... }\" loop around program\n"
2971" -p assume loop like -n but print line also, like sed\n"
2972" -s enable rudimentary parsing for switches after programfile\n"
2973" -S look for programfile using PATH environment variable\n",
2974" -t enable tainting warnings\n"
2975" -T enable tainting checks\n"
2976" -u dump core after parsing program\n"
2977" -U allow unsafe operations\n"
2978" -v print version, patchlevel and license\n"
2979" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2980" -w enable many useful warnings\n"
1566c39d
NC
2981" -W enable all warnings\n"
2982" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2983" -X disable all warnings\n"
2984" \n"
2985"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2986NULL
2987};
27da23d5 2988 const char * const *p = usage_msg;
1566c39d 2989 PerlIO *out = PerlIO_stdout();
fb73857a 2990
1566c39d
NC
2991 PerlIO_printf(out,
2992 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2993 PL_origargv[0]);
fb73857a 2994 while (*p)
1566c39d 2995 PerlIO_puts(out, *p++);
b6f82619 2996 my_exit(0);
4633a7c4
LW
2997}
2998
b4ab917c
DM
2999/* convert a string of -D options (or digits) into an int.
3000 * sets *s to point to the char after the options */
3001
3002#ifdef DEBUGGING
3003int
e1ec3a88 3004Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3005{
27da23d5 3006 static const char * const usage_msgd[] = {
651b8f1a
NC
3007 " Debugging flag values: (see also -d)\n"
3008 " p Tokenizing and parsing (with v, displays parse stack)\n"
3009 " s Stack snapshots (with v, displays all stacks)\n"
3010 " l Context (loop) stack processing\n"
3011 " t Trace execution\n"
3012 " o Method and overloading resolution\n",
3013 " c String/numeric conversions\n"
3014 " P Print profiling info, source file input state\n"
3015 " m Memory and SV allocation\n"
3016 " f Format processing\n"
3017 " r Regular expression parsing and execution\n"
3018 " x Syntax tree dump\n",
3019 " u Tainting checks\n"
3020 " H Hash dump -- usurps values()\n"
3021 " X Scratchpad allocation\n"
3022 " D Cleaning up\n"
56967202 3023 " S Op slab allocation\n"
651b8f1a
NC
3024 " T Tokenising\n"
3025 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3026 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3027 " v Verbose: use in conjunction with other flags\n"
3028 " C Copy On Write\n"
3029 " A Consistency checks on internal structures\n"
3030 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3031 " M trace smart match resolution\n"
3032 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3033 NULL
3034 };
b4ab917c 3035 int i = 0;
7918f24d
NC
3036
3037 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3038
b4ab917c
DM
3039 if (isALPHA(**s)) {
3040 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3041 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c 3042
0eb30aeb 3043 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3044 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3045 if (d)
3046 i |= 1 << (d - debopts);
3047 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3048 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3049 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3050 }
3051 }
e6e64d9b 3052 else if (isDIGIT(**s)) {
b4ab917c 3053 i = atoi(*s);
0eb30aeb 3054 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3055 }
ddcf8bc1 3056 else if (givehelp) {
06e869a4 3057 const char *const *p = usage_msgd;
651b8f1a 3058 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3059 }
b4ab917c
DM
3060# ifdef EBCDIC
3061 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3062 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3063 "-Dp not implemented on this platform\n");
3064# endif
3065 return i;
3066}
3067#endif
3068
79072805
LW
3069/* This routine handles any switches that can be given during run */
3070
c7030b81
NC
3071const char *
3072Perl_moreswitches(pTHX_ const char *s)
79072805 3073{
27da23d5 3074 dVAR;
84c133a0 3075 UV rschar;
0544e6df 3076 const char option = *s; /* used to remember option in -m/-M code */
79072805 3077
7918f24d
NC
3078 PERL_ARGS_ASSERT_MORESWITCHES;
3079
79072805
LW
3080 switch (*s) {
3081 case '0':
a863c7d1 3082 {
f2095865 3083 I32 flags = 0;
a3b680e6 3084 STRLEN numlen;
f2095865
JH
3085
3086 SvREFCNT_dec(PL_rs);
3087 if (s[1] == 'x' && s[2]) {
a3b680e6 3088 const char *e = s+=2;
f2095865
JH
3089 U8 *tmps;
3090
a3b680e6
AL
3091 while (*e)
3092 e++;
f2095865
JH
3093 numlen = e - s;
3094 flags = PERL_SCAN_SILENT_ILLDIGIT;
3095 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3096 if (s + numlen < e) {
3097 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3098 numlen = 0;
3099 s--;
3100 }
396482e1 3101 PL_rs = newSVpvs("");
c5661c80 3102 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3103 tmps = (U8*)SvPVX(PL_rs);
3104 uvchr_to_utf8(tmps, rschar);
3105 SvCUR_set(PL_rs, UNISKIP(rschar));
3106 SvUTF8_on(PL_rs);
3107 }
3108 else {
3109 numlen = 4;
3110 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3111 if (rschar & ~((U8)~0))
3112 PL_rs = &PL_sv_undef;
3113 else if (!rschar && numlen >= 2)
396482e1 3114 PL_rs = newSVpvs("");
f2095865
JH
3115 else {
3116 char ch = (char)rschar;
3117 PL_rs = newSVpvn(&ch, 1);
3118 }
3119 }
64ace3f8 3120 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3121 return s + numlen;
a863c7d1 3122 }
46487f74 3123 case 'C':
a05d7ebb 3124 s++;
dd374669 3125 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3126 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3127 PL_utf8cache = -1;
46487f74 3128 return s;
2304df62 3129 case 'F':
3280af22 3130 PL_minus_F = TRUE;
ebce5377
RGS
3131 PL_splitstr = ++s;
3132 while (*s && !isSPACE(*s)) ++s;
e49e380e 3133 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3134 return s;
79072805 3135 case 'a':
3280af22 3136 PL_minus_a = TRUE;
79072805
LW
3137 s++;
3138 return s;
3139 case 'c':
3280af22 3140 PL_minus_c = TRUE;
79072805
LW
3141 s++;
3142 return s;
3143 case 'd':
f20b2998 3144 forbid_setid('d', FALSE);
4633a7c4 3145 s++;
2cbb2ee1
RGS
3146
3147 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3148 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3149 ++s;
3150 my_setenv("PERL5DB_THREADED", "1");
3151 }
3152
70c94a19
RR
3153 /* The following permits -d:Mod to accepts arguments following an =
3154 in the fashion that -MSome::Mod does. */
3155 if (*s == ':' || *s == '=') {
b19934fb
NC
3156 const char *start;
3157 const char *end;
3158 SV *sv;
3159
3160 if (*++s == '-') {
3161 ++s;
3162 sv = newSVpvs("no Devel::");
3163 } else {
3164 sv = newSVpvs("use Devel::");
3165 }
3166
3167 start = s;
3168 end = s + strlen(s);
f85893a1 3169
b19934fb 3170 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3171 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3172 if (*s != '=')
f85893a1 3173 sv_catpvn(sv, start, end - start);
70c94a19
RR
3174 else {
3175 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3176 /* Don't use NUL as q// delimiter here, this string goes in the
3177 * environment. */
3178 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3179 }
f85893a1 3180 s = end;
184f32ec 3181 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3182 SvREFCNT_dec(sv);
4633a7c4 3183 }
ed094faf 3184 if (!PL_perldb) {
3280af22 3185 PL_perldb = PERLDB_ALL;
a0d0e21e 3186 init_debugger();
ed094faf 3187 }
79072805
LW
3188 return s;
3189 case 'D':
0453d815 3190 {
79072805 3191#ifdef DEBUGGING
f20b2998 3192 forbid_setid('D', FALSE);
b4ab917c 3193 s++;
dd374669 3194 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3195#else /* !DEBUGGING */
0453d815 3196 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3197 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3198 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3199 for (s++; isWORDCHAR(*s); s++) ;
79072805 3200#endif
79072805 3201 return s;
0453d815 3202 }
4633a7c4 3203 case 'h':
b6f82619 3204 usage();
79072805 3205 case 'i':
43c5f42d 3206 Safefree(PL_inplace);
c030f24b
GH
3207#if defined(__CYGWIN__) /* do backup extension automagically */
3208 if (*(s+1) == '\0') {
c86a4f2e 3209 PL_inplace = savepvs(".bak");
c030f24b
GH
3210 return s+1;
3211 }
3212#endif /* __CYGWIN__ */
5ef5d758 3213 {
d4c19fe8 3214 const char * const start = ++s;
5ef5d758
NC
3215 while (*s && !isSPACE(*s))
3216 ++s;
3217
3218 PL_inplace = savepvn(start, s - start);
3219 }
7b8d334a 3220 if (*s) {
5ef5d758 3221 ++s;
7b8d334a 3222 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3223 s++;
7b8d334a 3224 }
fb73857a 3225 return s;
4e49a025 3226 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3227 forbid_setid('I', FALSE);
fb73857a
PP
3228 ++s;
3229 while (*s && isSPACE(*s))
3230 ++s;
3231 if (*s) {
c7030b81 3232 const char *e, *p;
0df16ed7
GS
3233 p = s;
3234 /* ignore trailing spaces (possibly followed by other switches) */
3235 do {
3236 for (e = p; *e && !isSPACE(*e); e++) ;
3237 p = e;
3238 while (isSPACE(*p))
3239 p++;
3240 } while (*p && *p != '-');
55b4bc1c 3241 incpush(s, e-s,
e28f3139 3242 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3243 s = p;
3244 if (*s == '-')
3245 s++;
79072805
LW
3246 }
3247 else
a67e862a 3248 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3249 return s;
79072805 3250 case 'l':
3280af22 3251 PL_minus_l = TRUE;
79072805 3252 s++;
7889fe52
NIS
3253 if (PL_ors_sv) {
3254 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3255 PL_ors_sv = NULL;
7889fe52 3256 }
79072805 3257 if (isDIGIT(*s)) {
53305cf1 3258 I32 flags = 0;
a3b680e6 3259 STRLEN numlen;
396482e1 3260 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3261 numlen = 3 + (*s == '0');
3262 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3263 s += numlen;
3264 }
3265 else {
8bfdd7d9 3266 if (RsPARA(PL_rs)) {
396482e1 3267 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3268 }
3269 else {
8bfdd7d9 3270 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3271 }
79072805
LW
3272 }
3273 return s;
1a30305b 3274 case 'M':
f20b2998 3275 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3276 /* FALL THROUGH */
3277 case 'm':
f20b2998 3278 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3279 if (*++s) {
c7030b81 3280 const char *start;
b64cb68c 3281 const char *end;
11343788 3282 SV *sv;
e1ec3a88 3283 const char *use = "use ";
0544e6df 3284 bool colon = FALSE;
a5f75d66 3285 /* -M-foo == 'no foo' */
d0043bd1
NC
3286 /* Leading space on " no " is deliberate, to make both
3287 possibilities the same length. */
3288 if (*s == '-') { use = " no "; ++s; }
3289 sv = newSVpvn(use,4);
a5f75d66 3290 start = s;
1a30305b 3291 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3292 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3293 if( *s++ == ':' ) {
3294 if( *s == ':' )
3295 s++;
3296 else
3297 colon = TRUE;
3298 }
3299 }
3300 if (s == start)
3301 Perl_croak(aTHX_ "Module name required with -%c option",
3302 option);
3303 if (colon)
3304 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3305 "contains single ':'",
63da6837 3306 (int)(s - start), start, option);
b64cb68c 3307 end = s + strlen(s);
c07a80fd 3308 if (*s != '=') {
b64cb68c 3309 sv_catpvn(sv, start, end - start);
0544e6df 3310 if (option == 'm') {
c07a80fd 3311 if (*s != '\0')
cea2e8a9 3312 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3313 sv_catpvs( sv, " ()");
c07a80fd
PP
3314 }
3315 } else {
11343788 3316 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3317 /* Use NUL as q''-delimiter. */
3318 sv_catpvs(sv, " split(/,/,q\0");
3319 ++s;
3320 sv_catpvn(sv, s, end - s);
396482e1 3321 sv_catpvs(sv, "\0)");
c07a80fd 3322 }
b64cb68c 3323 s = end;
29a861e7 3324 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3325 }
3326 else
0544e6df 3327 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3328 return s;
79072805 3329 case 'n':
3280af22 3330 PL_minus_n = TRUE;
79072805
LW
3331 s++;
3332 return s;
3333 case 'p':
3280af22 3334 PL_minus_p = TRUE;
79072805
LW
3335 s++;
3336 return s;
3337 case 's':
f20b2998 3338 forbid_setid('s', FALSE);
3280af22 3339 PL_doswitches = TRUE;
79072805
LW
3340 s++;
3341 return s;
6537fe72 3342 case 't':
27a6968b 3343 case 'T':
284167a5
SM
3344#if SILENT_NO_TAINT_SUPPORT
3345 /* silently ignore */
3346#elif NO_TAINT_SUPPORT
3347 Perl_croak("This perl was compiled without taint support. "
3348 "Cowardly refusing to run with -t or -T flags");
3349#else
3350 if (!TAINTING_get)
27a6968b 3351 TOO_LATE_FOR(*s);
284167a5 3352#endif
6537fe72 3353 s++;
463ee0b2 3354 return s;
79072805 3355 case 'u':
3280af22 3356 PL_do_undump = TRUE;
79072805
LW
3357 s++;
3358 return s;
3359 case 'U':
3280af22 3360 PL_unsafe = TRUE;
79072805
LW
3361 s++;
3362 return s;
3363 case 'v':
c4bc78d9
NC
3364 minus_v();
3365 case 'w':
3366 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3367 PL_dowarn |= G_WARN_ON;
3368 }
3369 s++;
3370 return s;
3371 case 'W':
3372 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3373 if (!specialWARN(PL_compiling.cop_warnings))
3374 PerlMemShared_free(PL_compiling.cop_warnings);
3375 PL_compiling.cop_warnings = pWARN_ALL ;
3376 s++;
3377 return s;
3378 case 'X':
3379 PL_dowarn = G_WARN_ALL_OFF;
3380 if (!specialWARN(PL_compiling.cop_warnings))
3381 PerlMemShared_free(PL_compiling.cop_warnings);
3382 PL_compiling.cop_warnings = pWARN_NONE ;
3383 s++;
3384 return s;
3385 case '*':
3386 case ' ':
3387 while( *s == ' ' )
3388 ++s;
3389 if (s[0] == '-') /* Additional switches on #! line. */
3390 return s+1;
3391 break;
3392 case '-':
3393 case 0:
3394#if defined(WIN32) || !defined(PERL_STRICT_CR)
3395 case '\r':
3396#endif
3397 case '\n':
3398 case '\t':
3399 break;
3400#ifdef ALTERNATE_SHEBANG
3401 case 'S': /* OS/2 needs -S on "extproc" line. */
3402 break;
3403#endif
4bb78d63
CB
3404 case 'e': case 'f': case 'x': case 'E':
3405#ifndef ALTERNATE_SHEBANG
3406 case 'S':
3407#endif
3408 case 'V':
c4bc78d9 3409 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3410 default:
3411 Perl_croak(aTHX_
3412 "Unrecognized switch: -%.1s (-h will show valid options)",s
3413 );
c4bc78d9
NC
3414 }
3415 return NULL;
3416}
3417
3418
3419STATIC void
3420S_minus_v(pTHX)
3421{
fc3381af 3422 PerlIO * PIO_stdout;
d7aa5382 3423 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3424 upg_version(PL_patchlevel, TRUE);
8e9464f1 3425#if !defined(DGUX)
46807d8e
YO
3426 {
3427 SV* level= vstringify(PL_patchlevel);
3428#ifdef PERL_PATCHNUM
23d483e2
NC
3429# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3430 SV *num = newSVpvs(PERL_PATCHNUM "*");
3431# else
3432 SV *num = newSVpvs(PERL_PATCHNUM);
3433# endif
fc3381af
DD
3434 {
3435 STRLEN level_len, num_len;
3436 char * level_str, * num_str;
3437 num_str = SvPV(num, num_len);
3438 level_str = SvPV(level, level_len);
3439 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3440 SvREFCNT_dec(level);
3441 level= num;
3442 } else {
3443 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3444 SvREFCNT_dec(num);
3445 }
46807d8e
YO
3446 }
3447 #endif
fc3381af
DD
3448 PIO_stdout = PerlIO_stdout();
3449 PerlIO_printf(PIO_stdout,
ded326e4
DG
3450 "\nThis is perl " STRINGIFY(PERL_REVISION)
3451 ", version " STRINGIFY(PERL_VERSION)
3452 ", subversion " STRINGIFY(PERL_SUBVERSION)
3453 " (%"SVf") built for " ARCHNAME, level
3454 );
46807d8e
YO
3455 SvREFCNT_dec(level);
3456 }
8e9464f1 3457#else /* DGUX */
fc3381af 3458 PIO_stdout = PerlIO_stdout();
8e9464f1 3459/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
fc3381af 3460 PerlIO_printf(PIO_stdout,
52ea0aec 3461 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3462 SVfARG(vstringify(PL_patchlevel))));
fc3381af 3463 PerlIO_printf(PIO_stdout,
8e9464f1
JH
3464 Perl_form(aTHX_ " built under %s at %s %s\n",
3465 OSNAME, __DATE__, __TIME__));
fc3381af 3466 PerlIO_printf(PIO_stdout,
8e9464f1 3467 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3468 OSVERS));
8e9464f1 3469#endif /* !DGUX */
fb73857a
PP
3470#if defined(LOCAL_PATCH_COUNT)
3471 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3472 PerlIO_printf(PIO_stdout,
b0e47665
GS
3473 "\n(with %d registered patch%s, "
3474 "see perl -V for more detail)",
bb7a0f54 3475 LOCAL_PATCH_COUNT,
b0e47665 3476 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3477#endif
1a30305b 3478
fc3381af 3479 PerlIO_printf(PIO_stdout,
d907e2e9 3480 "\n\nCopyright 1987-2013, Larry Wall\n");
79072805 3481#ifdef MSDOS
fc3381af 3482 PerlIO_printf(PIO_stdout,
b0e47665 3483 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3484#endif
3485#ifdef DJGPP
fc3381af 3486 PerlIO_printf(PIO_stdout,
b0e47665
GS
3487 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3488 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3489#endif
79072805 3490#ifdef OS2
fc3381af 3491 PerlIO_printf(PIO_stdout,
b0e47665 3492 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3493 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3494#endif
9d116dd7 3495#ifdef OEMVS
fc3381af 3496 PerlIO_printf(PIO_stdout,
b0e47665 3497 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3498#endif
495c5fdc 3499#ifdef __VOS__
fc3381af 3500 PerlIO_printf(PIO_stdout,
c0fcb8c5 3501 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
495c5fdc 3502#endif
a1a0e61e 3503#ifdef POSIX_BC
fc3381af 3504 PerlIO_printf(PIO_stdout,
b0e47665 3505 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3506#endif
e1caacb4 3507#ifdef UNDER_CE
fc3381af
DD
3508 PerlIO_printf(PIO_stdout,
3509 "WINCE port by Rainer Keuchel, 2001-2002\n"
3510 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3511 wce_hitreturn();
3512#endif
a0fd4948 3513#ifdef __SYMBIAN32__
fc3381af 3514 PerlIO_printf(PIO_stdout,
27da23d5
JH
3515 "Symbian port by Nokia, 2004-2005\n");
3516#endif
baed7233
DL
3517#ifdef BINARY_BUILD_NOTICE
3518 BINARY_BUILD_NOTICE;