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[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
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25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
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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
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37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
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39#endif
40
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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
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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
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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
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AL
81#define CALL_BODY_SUB(myop) \
82 if (PL_op == (myop)) \
139d0ce6 83 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
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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
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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 }
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NC
108#if defined(USE_ITHREADS)
109 else
110#else
111 /* This always happens for non-ithreads */
112#endif
113 {
e6827a76
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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
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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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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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150 if (!PL_veto_cleanup) {
151 PERL_SYS_TERM_BODY();
152 }
cbec8ebe
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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;
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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);
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171 Zero(my_perl, 1, PerlInterpreter);
172 PL_Mem = ipM;
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173 PL_MemShared = ipMS;
174 PL_MemParse = ipMP;
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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);
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GS
236 if (PL_perl_destruct_level > 0)
237 init_interp();
238#endif
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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
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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
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267#ifdef HAVE_INTERP_INTERN
268 sys_intern_init();
269#endif
270
3a1ee7e8 271 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 272
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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("");
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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
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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
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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
3280af22 761 if (PL_sv_objcount) {
a0d0e21e
LW
762 /*
763 * Try to destruct global references. We do this first so that the
764 * destructors and destructees still exist. Some sv's might remain.
765 * Non-referenced objects are on their own.
766 */
a0d0e21e 767 sv_clean_objs();
bf9cdc68 768 PL_sv_objcount = 0;
8990e307
LW
769 }
770
5cd24f17 771 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 772 SvREFCNT_dec(PL_warnhook);
a0714e2c 773 PL_warnhook = NULL;
3280af22 774 SvREFCNT_dec(PL_diehook);
a0714e2c 775 PL_diehook = NULL;
5cd24f17 776
4b556e6c 777 /* call exit list functions */
3280af22 778 while (PL_exitlistlen-- > 0)
acfe0abc 779 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 780
3280af22 781 Safefree(PL_exitlist);
4b556e6c 782
1c4916e5
CB
783 PL_exitlist = NULL;
784 PL_exitlistlen = 0;
785
a3e6e81e
NC
786 SvREFCNT_dec(PL_registered_mros);
787
551a8b83 788 /* jettison our possibly duplicated environment */
4b647fb0
DM
789 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
790 * so we certainly shouldn't free it here
791 */
2f42fcb0 792#ifndef PERL_MICRO
4b647fb0 793#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 794 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
795#ifdef USE_ITHREADS
796 /* only main thread can free environ[0] contents */
797 && PL_curinterp == aTHX
798#endif
799 )
800 {
551a8b83
JH
801 I32 i;
802
803 for (i = 0; environ[i]; i++)
4b420006 804 safesysfree(environ[i]);
0631ea03 805
4b420006
JH
806 /* Must use safesysfree() when working with environ. */
807 safesysfree(environ);
551a8b83
JH
808
809 environ = PL_origenviron;
810 }
811#endif
2f42fcb0 812#endif /* !PERL_MICRO */
551a8b83 813
30985c42
JH
814 if (destruct_level == 0) {
815
816 DEBUG_P(debprofdump());
817
818#if defined(PERLIO_LAYERS)
819 /* No more IO - including error messages ! */
820 PerlIO_cleanup(aTHX);
821#endif
822
823 CopFILE_free(&PL_compiling);
30985c42
JH
824
825 /* The exit() function will do everything that needs doing. */
826 return STATUS_EXIT;
827 }
828
5f8cb046
DM
829#ifdef USE_ITHREADS
830 /* the syntax tree is shared between clones
831 * so op_free(PL_main_root) only ReREFCNT_dec's
832 * REGEXPs in the parent interpreter
833 * we need to manually ReREFCNT_dec for the clones
834 */
0547a729
DM
835 {
836 I32 i = AvFILLp(PL_regex_padav);
837 SV **ary = AvARRAY(PL_regex_padav);
838
839 for (; i; i--) {
840 SvREFCNT_dec(ary[i]);
841 ary[i] = &PL_sv_undef;
842 }
843 }
5f8cb046
DM
844#endif
845
0547a729 846
ad64d0ec 847 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
848 PL_stashcache = NULL;
849
5f05dabc
PP
850 /* loosen bonds of global variables */
851
2f9285f8
DM
852 /* XXX can PL_parser still be non-null here? */
853 if(PL_parser && PL_parser->rsfp) {
854 (void)PerlIO_close(PL_parser->rsfp);
855 PL_parser->rsfp = NULL;
8ebc5c01
PP
856 }
857
84386e14
RGS
858 if (PL_minus_F) {
859 Safefree(PL_splitstr);
860 PL_splitstr = NULL;
861 }
862
8ebc5c01 863 /* switches */
3280af22
NIS
864 PL_minus_n = FALSE;
865 PL_minus_p = FALSE;
866 PL_minus_l = FALSE;
867 PL_minus_a = FALSE;
868 PL_minus_F = FALSE;
869 PL_doswitches = FALSE;
599cee73 870 PL_dowarn = G_WARN_OFF;
1a904fc8 871#ifdef PERL_SAWAMPERSAND
d3b97530 872 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 873#endif
3280af22
NIS
874 PL_unsafe = FALSE;
875
876 Safefree(PL_inplace);
bd61b366 877 PL_inplace = NULL;
a7cb1f99 878 SvREFCNT_dec(PL_patchlevel);
1e8125c6 879 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
880
881 if (PL_e_script) {
882 SvREFCNT_dec(PL_e_script);
a0714e2c 883 PL_e_script = NULL;
8ebc5c01
PP
884 }
885
bf9cdc68
RG
886 PL_perldb = 0;
887
8ebc5c01
PP
888 /* magical thingies */
889
e23d9e2f
CS
890 SvREFCNT_dec(PL_ofsgv); /* *, */
891 PL_ofsgv = NULL;
5f05dabc 892
7889fe52 893 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 894 PL_ors_sv = NULL;
8ebc5c01 895
3280af22 896 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 897 PL_rs = NULL;
dc92893f 898
d33b2eba 899 Safefree(PL_osname); /* $^O */
bd61b366 900 PL_osname = NULL;
5f05dabc 901
3280af22 902 SvREFCNT_dec(PL_statname);
a0714e2c
SS
903 PL_statname = NULL;
904 PL_statgv = NULL;
5f05dabc 905
8ebc5c01
PP
906 /* defgv, aka *_ should be taken care of elsewhere */
907
7d5ea4e7
GS
908 /* float buffer */
909 Safefree(PL_efloatbuf);
bd61b366 910 PL_efloatbuf = NULL;
7d5ea4e7
GS
911 PL_efloatsize = 0;
912
8ebc5c01 913 /* startup and shutdown function lists */
3280af22 914 SvREFCNT_dec(PL_beginav);
5a837c8f 915 SvREFCNT_dec(PL_beginav_save);
3280af22 916 SvREFCNT_dec(PL_endav);
7d30b5c4 917 SvREFCNT_dec(PL_checkav);
ece599bd 918 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
919 SvREFCNT_dec(PL_unitcheckav);
920 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 921 SvREFCNT_dec(PL_initav);
7d49f689
NC
922 PL_beginav = NULL;
923 PL_beginav_save = NULL;
924 PL_endav = NULL;
925 PL_checkav = NULL;
926 PL_checkav_save = NULL;
3c10abe3
AG
927 PL_unitcheckav = NULL;
928 PL_unitcheckav_save = NULL;
7d49f689 929 PL_initav = NULL;
5618dfe8 930
8ebc5c01 931 /* shortcuts just get cleared */
a0714e2c
SS
932 PL_envgv = NULL;
933 PL_incgv = NULL;
934 PL_hintgv = NULL;
935 PL_errgv = NULL;
936 PL_argvgv = NULL;
937 PL_argvoutgv = NULL;
938 PL_stdingv = NULL;
939 PL_stderrgv = NULL;
940 PL_last_in_gv = NULL;
941 PL_replgv = NULL;
942 PL_DBgv = NULL;
943 PL_DBline = NULL;
944 PL_DBsub = NULL;
945 PL_DBsingle = NULL;
946 PL_DBtrace = NULL;
947 PL_DBsignal = NULL;
601f1833 948 PL_DBcv = NULL;
7d49f689 949 PL_dbargs = NULL;
5c284bb0 950 PL_debstash = NULL;
8ebc5c01 951
7a1c5554 952 SvREFCNT_dec(PL_argvout_stack);
7d49f689 953 PL_argvout_stack = NULL;
8ebc5c01 954
5c831c24 955 SvREFCNT_dec(PL_modglobal);
5c284bb0 956 PL_modglobal = NULL;
5c831c24 957 SvREFCNT_dec(PL_preambleav);
7d49f689 958 PL_preambleav = NULL;
5c831c24 959 SvREFCNT_dec(PL_subname);
a0714e2c 960 PL_subname = NULL;
ca0c25f6 961#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 962 SvREFCNT_dec(PL_pidstatus);
5c284bb0 963 PL_pidstatus = NULL;
ca0c25f6 964#endif
5c831c24 965 SvREFCNT_dec(PL_toptarget);
a0714e2c 966 PL_toptarget = NULL;
5c831c24 967 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
968 PL_bodytarget = NULL;
969 PL_formtarget = NULL;
5c831c24 970
d33b2eba 971 /* free locale stuff */
b9582b6a 972#ifdef USE_LOCALE_COLLATE
d33b2eba 973 Safefree(PL_collation_name);
bd61b366 974 PL_collation_name = NULL;
b9582b6a 975#endif
d33b2eba 976
b9582b6a 977#ifdef USE_LOCALE_NUMERIC
d33b2eba 978 Safefree(PL_numeric_name);
bd61b366 979 PL_numeric_name = NULL;
a453c169 980 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 981 PL_numeric_radix_sv = NULL;
b9582b6a 982#endif
d33b2eba 983
9c0b6888
KW
984 /* clear character classes */
985 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
986 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
987 PL_utf8_swash_ptrs[i] = NULL;
988 }
5c831c24
GS
989 SvREFCNT_dec(PL_utf8_mark);
990 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 991 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 992 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 993 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
994 SvREFCNT_dec(PL_utf8_idstart);
995 SvREFCNT_dec(PL_utf8_idcont);
2726813d 996 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c
SS
997 PL_utf8_mark = NULL;
998 PL_utf8_toupper = NULL;
999 PL_utf8_totitle = NULL;
1000 PL_utf8_tolower = NULL;
1001 PL_utf8_tofold = NULL;
1002 PL_utf8_idstart = NULL;
1003 PL_utf8_idcont = NULL;
2726813d 1004 PL_utf8_foldclosures = NULL;
86f72d56 1005 for (i = 0; i < POSIX_CC_COUNT; i++) {
30f9bdb0
KW
1006 SvREFCNT_dec(PL_Posix_ptrs[i]);
1007 PL_Posix_ptrs[i] = NULL;
1008
86f72d56
KW
1009 SvREFCNT_dec(PL_L1Posix_ptrs[i]);
1010 PL_L1Posix_ptrs[i] = NULL;
cac6e0ca
KW
1011
1012 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1013 PL_XPosix_ptrs[i] = NULL;
86f72d56 1014 }
5c831c24 1015
971a9dd3 1016 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1017 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1018 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1019 cophh_free(CopHINTHASH_get(&PL_compiling));
1020 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1021 CopFILE_free(&PL_compiling);
5c831c24 1022
a0d0e21e 1023 /* Prepare to destruct main symbol table. */
5f05dabc 1024
3280af22 1025 hv = PL_defstash;
ca556bcd
DM
1026 /* break ref loop *:: <=> %:: */
1027 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1028 PL_defstash = 0;
a0d0e21e 1029 SvREFCNT_dec(hv);
5c831c24 1030 SvREFCNT_dec(PL_curstname);
a0714e2c 1031 PL_curstname = NULL;
a0d0e21e 1032
5a844595
GS
1033 /* clear queued errors */
1034 SvREFCNT_dec(PL_errors);
a0714e2c 1035 PL_errors = NULL;
5a844595 1036
dd69841b
BB
1037 SvREFCNT_dec(PL_isarev);
1038
a0d0e21e 1039 FREETMPS;
9b387841 1040 if (destruct_level >= 2) {
3280af22 1041 if (PL_scopestack_ix != 0)
9b387841
NC
1042 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1043 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1044 (long)PL_scopestack_ix);
3280af22 1045 if (PL_savestack_ix != 0)
9b387841
NC
1046 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1047 "Unbalanced saves: %ld more saves than restores\n",
1048 (long)PL_savestack_ix);
3280af22 1049 if (PL_tmps_floor != -1)
9b387841
NC
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1051 (long)PL_tmps_floor + 1);
a0d0e21e 1052 if (cxstack_ix != -1)
9b387841
NC
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1054 (long)cxstack_ix + 1);
a0d0e21e 1055 }
8990e307 1056
0547a729
DM
1057#ifdef USE_ITHREADS
1058 SvREFCNT_dec(PL_regex_padav);
1059 PL_regex_padav = NULL;
1060 PL_regex_pad = NULL;
1061#endif
1062
776df701 1063#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1064 /* the entries in this list are allocated via SV PVX's, so get freed
1065 * in sv_clean_all */
1066 Safefree(PL_my_cxt_list);
776df701 1067#endif
57bb2458 1068
8990e307 1069 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1070
1071 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1072 while (sv_clean_all() > 2)
5226ed68
JH
1073 ;
1074
23083432
FC
1075#ifdef USE_ITHREADS
1076 Safefree(PL_stashpad); /* must come after sv_clean_all */
1077#endif
1078
d4777f27
GS
1079 AvREAL_off(PL_fdpid); /* no surviving entries */
1080 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1081 PL_fdpid = NULL;
d33b2eba 1082
6c644e78
GS
1083#ifdef HAVE_INTERP_INTERN
1084 sys_intern_clear();
1085#endif
1086
6e72f9df
PP
1087 /* Destruct the global string table. */
1088 {
1089 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1090 * so that sv_free() won't fail on them.
80459961
NC
1091 * Now that the global string table is using a single hunk of memory
1092 * for both HE and HEK, we either need to explicitly unshare it the
1093 * correct way, or actually free things here.
6e72f9df 1094 */
80459961
NC
1095 I32 riter = 0;
1096 const I32 max = HvMAX(PL_strtab);
c4420975 1097 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1098 HE *hent = array[0];
1099
6e72f9df 1100 for (;;) {
0453d815 1101 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1102 HE * const next = HeNEXT(hent);
9014280d 1103 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1104 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1105 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1106 Safefree(hent);
1107 hent = next;
6e72f9df
PP
1108 }
1109 if (!hent) {
1110 if (++riter > max)
1111 break;
1112 hent = array[riter];
1113 }
1114 }
80459961
NC
1115
1116 Safefree(array);
1117 HvARRAY(PL_strtab) = 0;
1118 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1119 }
3280af22 1120 SvREFCNT_dec(PL_strtab);
6e72f9df 1121
e652bb2f 1122#ifdef USE_ITHREADS
c21d1a0f 1123 /* free the pointer tables used for cloning */
a0739874 1124 ptr_table_free(PL_ptr_table);
bf9cdc68 1125 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1126#endif
a0739874 1127
d33b2eba
GS
1128 /* free special SVs */
1129
1130 SvREFCNT(&PL_sv_yes) = 0;
1131 sv_clear(&PL_sv_yes);
1132 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1133 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1134
1135 SvREFCNT(&PL_sv_no) = 0;
1136 sv_clear(&PL_sv_no);
1137 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1138 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1139
9f375a43
DM
1140 {
1141 int i;
1142 for (i=0; i<=2; i++) {
1143 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1144 sv_clear(PERL_DEBUG_PAD(i));
1145 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1146 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1147 }
1148 }
1149
0453d815 1150 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1151 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1152
eba0f806
DM
1153#ifdef DEBUG_LEAKING_SCALARS
1154 if (PL_sv_count != 0) {
1155 SV* sva;
1156 SV* sv;
eb578fdb 1157 SV* svend;
eba0f806 1158
ad64d0ec 1159 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1160 svend = &sva[SvREFCNT(sva)];
1161 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1162 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1163 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1164 " flags=0x%"UVxf
fd0854ff 1165 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1166 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1167 "serial %"UVuf"\n",
574b8821
NC
1168 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1169 pTHX__VALUE,
fd0854ff
DM
1170 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1171 sv->sv_debug_line,
1172 sv->sv_debug_inpad ? "for" : "by",
1173 sv->sv_debug_optype ?
1174 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1175 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1176 sv->sv_debug_serial
fd0854ff 1177 );
2aa47728 1178#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1179 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1180#endif
eba0f806
DM
1181 }
1182 }
1183 }
1184 }
2aa47728
NC
1185#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1186 {
1187 int status;
1188 fd_set rset;
1189 /* Wait for up to 4 seconds for child to terminate.
1190 This seems to be the least effort way of timing out on reaping
1191 its exit status. */
1192 struct timeval waitfor = {4, 0};
41e4abd8 1193 int sock = PL_dumper_fd;
2aa47728
NC
1194
1195 shutdown(sock, 1);
1196 FD_ZERO(&rset);
1197 FD_SET(sock, &rset);
1198 select(sock + 1, &rset, NULL, NULL, &waitfor);
1199 waitpid(child, &status, WNOHANG);
1200 close(sock);
1201 }
1202#endif
eba0f806 1203#endif
77abb4c6
NC
1204#ifdef DEBUG_LEAKING_SCALARS_ABORT
1205 if (PL_sv_count)
1206 abort();
1207#endif
bf9cdc68 1208 PL_sv_count = 0;
eba0f806 1209
56a2bab7 1210#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1211 /* No more IO - including error messages ! */
1212 PerlIO_cleanup(aTHX);
1213#endif
1214
9f4bd222 1215 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1216 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1217 for no arg - and will try and SvREFCNT_dec it.
1218 */
1219 SvREFCNT(&PL_sv_undef) = 0;
1220 SvREADONLY_off(&PL_sv_undef);
1221
3280af22 1222 Safefree(PL_origfilename);
bd61b366 1223 PL_origfilename = NULL;
43c5f42d 1224 Safefree(PL_reg_curpm);
82ba1be6 1225 Safefree(PL_reg_poscache);
dd28f7bb 1226 free_tied_hv_pool();
3280af22 1227 Safefree(PL_op_mask);
cf36064f 1228 Safefree(PL_psig_name);
bf9cdc68 1229 PL_psig_name = (SV**)NULL;
d525a7b2 1230 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1231 {
1232 /* We need to NULL PL_psig_pend first, so that
1233 signal handlers know not to use it */
1234 int *psig_save = PL_psig_pend;
1235 PL_psig_pend = (int*)NULL;
1236 Safefree(psig_save);
1237 }
6e72f9df 1238 nuke_stacks();
284167a5
SM
1239 TAINTING_set(FALSE);
1240 TAINT_WARN_set(FALSE);
3280af22 1241 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1242 PL_debug = 0;
ac27b0f5 1243
a0d0e21e 1244 DEBUG_P(debprofdump());
d33b2eba 1245
e5dd39fc 1246#ifdef USE_REENTRANT_API
10bc17b6 1247 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1248#endif
1249
612f20c3
GS
1250 sv_free_arenas();
1251
5d9a96ca
DM
1252 while (PL_regmatch_slab) {
1253 regmatch_slab *s = PL_regmatch_slab;
1254 PL_regmatch_slab = PL_regmatch_slab->next;
1255 Safefree(s);
1256 }
1257
fc36a67e
PP
1258 /* As the absolutely last thing, free the non-arena SV for mess() */
1259
3280af22 1260 if (PL_mess_sv) {
f350b448
NC
1261 /* we know that type == SVt_PVMG */
1262
9c63abab 1263 /* it could have accumulated taint magic */
f350b448
NC
1264 MAGIC* mg;
1265 MAGIC* moremagic;
1266 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1267 moremagic = mg->mg_moremagic;
1268 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1269 && mg->mg_len >= 0)
1270 Safefree(mg->mg_ptr);
1271 Safefree(mg);
9c63abab 1272 }
f350b448 1273
fc36a67e 1274 /* we know that type >= SVt_PV */
8bd4d4c5 1275 SvPV_free(PL_mess_sv);
3280af22
NIS
1276 Safefree(SvANY(PL_mess_sv));
1277 Safefree(PL_mess_sv);
a0714e2c 1278 PL_mess_sv = NULL;
fc36a67e 1279 }
37038d91 1280 return STATUS_EXIT;
79072805
LW
1281}
1282
954c1994
GS
1283/*
1284=for apidoc perl_free
1285
1286Releases a Perl interpreter. See L<perlembed>.
1287
1288=cut
1289*/
1290
79072805 1291void
0cb96387 1292perl_free(pTHXx)
79072805 1293{
5174512c
NC
1294 dVAR;
1295
7918f24d
NC
1296 PERL_ARGS_ASSERT_PERL_FREE;
1297
c301d606
DM
1298 if (PL_veto_cleanup)
1299 return;
1300
7cb608b5 1301#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1302 {
1303 /*
1304 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1305 * value as we're probably hunting memory leaks then
1306 */
36e77d41 1307 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1308 const U32 old_debug = PL_debug;
55ef9aae
MHM
1309 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1310 thread at thread exit. */
4fd0a9b8
NC
1311 if (DEBUG_m_TEST) {
1312 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1313 "free this thread's memory\n");
1314 PL_debug &= ~ DEBUG_m_FLAG;
1315 }
55ef9aae
MHM
1316 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1317 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1318 PL_debug = old_debug;
55ef9aae
MHM
1319 }
1320 }
7cb608b5
NC
1321#endif
1322
acfe0abc 1323#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1324# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1325 {
acfe0abc 1326# ifdef NETWARE
7af12a34 1327 void *host = nw_internal_host;
acfe0abc 1328# else
7af12a34 1329 void *host = w32_internal_host;
acfe0abc 1330# endif
7af12a34 1331 PerlMem_free(aTHXx);
acfe0abc 1332# ifdef NETWARE
7af12a34 1333 nw_delete_internal_host(host);
acfe0abc 1334# else
7af12a34 1335 win32_delete_internal_host(host);
acfe0abc 1336# endif
7af12a34 1337 }
1c0ca838
GS
1338# else
1339 PerlMem_free(aTHXx);
1340# endif
acfe0abc
GS
1341#else
1342 PerlMem_free(aTHXx);
76e3520e 1343#endif
79072805
LW
1344}
1345
b7f7fff6 1346#if defined(USE_ITHREADS)
aebd1ac7
GA
1347/* provide destructors to clean up the thread key when libperl is unloaded */
1348#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1349
826955bd 1350#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1351#pragma fini "perl_fini"
666ad1ec
GA
1352#elif defined(__sun) && !defined(__GNUC__)
1353#pragma fini (perl_fini)
aebd1ac7
GA
1354#endif
1355
0dbb1585
AL
1356static void
1357#if defined(__GNUC__)
1358__attribute__((destructor))
aebd1ac7 1359#endif
de009b76 1360perl_fini(void)
aebd1ac7 1361{
27da23d5 1362 dVAR;
c301d606 1363 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1364 FREE_THREAD_KEY;
1365}
1366
1367#endif /* WIN32 */
1368#endif /* THREADS */
1369
4b556e6c 1370void
864dbfa3 1371Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1372{
97aff369 1373 dVAR;
3280af22
NIS
1374 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1375 PL_exitlist[PL_exitlistlen].fn = fn;
1376 PL_exitlist[PL_exitlistlen].ptr = ptr;
1377 ++PL_exitlistlen;
4b556e6c
JD
1378}
1379
b7975bdd
NC
1380STATIC void
1381S_set_caret_X(pTHX) {
97aff369 1382 dVAR;
fafc274c 1383 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1384 if (tmpgv) {
0f1723e1 1385 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1386#if defined(OS2)
1387 sv_setpv(caret_x, os2_execname(aTHX));
1388#else
2982a345
NC
1389# ifdef USE_KERN_PROC_PATHNAME
1390 size_t size = 0;
1391 int mib[4];
1392 mib[0] = CTL_KERN;
1393 mib[1] = KERN_PROC;
1394 mib[2] = KERN_PROC_PATHNAME;
1395 mib[3] = -1;
1396
1397 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1398 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1399 sv_grow(caret_x, size);
1400
1401 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1402 && size > 2) {
1403 SvPOK_only(caret_x);
1404 SvCUR_set(caret_x, size - 1);
1405 SvTAINT(caret_x);
1406 return;
1407 }
1408 }
ae60cb46
NC
1409# elif defined(USE_NSGETEXECUTABLEPATH)
1410 char buf[1];
1411 uint32_t size = sizeof(buf);
ae60cb46
NC
1412
1413 _NSGetExecutablePath(buf, &size);
1414 if (size < MAXPATHLEN * MAXPATHLEN) {
1415 sv_grow(caret_x, size);
1416 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1417 char *const tidied = realpath(SvPVX(caret_x), NULL);
1418 if (tidied) {
1419 sv_setpv(caret_x, tidied);
1420 free(tidied);
1421 } else {
1422 SvPOK_only(caret_x);
1423 SvCUR_set(caret_x, size);
1424 }
1425 return;
1426 }
1427 }
2982a345 1428# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1429 char buf[MAXPATHLEN];
1430 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1431
1432 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1433 includes a spurious NUL which will cause $^X to fail in system
1434 or backticks (this will prevent extensions from being built and
1435 many tests from working). readlink is not meant to add a NUL.
1436 Normal readlink works fine.
1437 */
1438 if (len > 0 && buf[len-1] == '\0') {
1439 len--;
1440 }
1441
1442 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1443 returning the text "unknown" from the readlink rather than the path
1444 to the executable (or returning an error from the readlink). Any
1445 valid path has a '/' in it somewhere, so use that to validate the
1446 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1447 */
1448 if (len > 0 && memchr(buf, '/', len)) {
1449 sv_setpvn(caret_x, buf, len);
82552a95 1450 return;
700dd4f8 1451 }
82552a95
NC
1452# endif
1453 /* Fallback to this: */
0f1723e1 1454 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1455#endif
b7975bdd
NC
1456 }
1457}
1458
954c1994
GS
1459/*
1460=for apidoc perl_parse
1461
1462Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1463
1464=cut
1465*/
1466
03d9f026
FC
1467#define SET_CURSTASH(newstash) \
1468 if (PL_curstash != newstash) { \
1469 SvREFCNT_dec(PL_curstash); \
1470 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1471 }
1472
79072805 1473int
0cb96387 1474perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1475{
27da23d5 1476 dVAR;
6224f72b 1477 I32 oldscope;
6224f72b 1478 int ret;
db36c5a1 1479 dJMPENV;
8d063cd8 1480
7918f24d
NC
1481 PERL_ARGS_ASSERT_PERL_PARSE;
1482#ifndef MULTIPLICITY
ed6c66dd 1483 PERL_UNUSED_ARG(my_perl);
7918f24d 1484#endif
7dc86639 1485#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1486 {
7dc86639
YO
1487 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1488
1489 if (s && (atoi(s) == 1)) {
1490 unsigned char *seed= PERL_HASH_SEED;
1491 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1492 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1493 while (seed < seed_end) {
1494 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1495 }
1496 PerlIO_printf(Perl_debug_log, "\n");
1497 }
b0891165
JH
1498 }
1499#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1500 PL_origargc = argc;
e2975953 1501 PL_origargv = argv;
a0d0e21e 1502
a2722ac9
GA
1503 if (PL_origalen != 0) {
1504 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1505 }
1506 else {
3cb9023d
JH
1507 /* Set PL_origalen be the sum of the contiguous argv[]
1508 * elements plus the size of the env in case that it is
e9137a8e 1509 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1510 * as the maximum modifiable length of $0. In the worst case
1511 * the area we are able to modify is limited to the size of
43c32782 1512 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1513 * --jhi */
e1ec3a88 1514 const char *s = NULL;
54bfe034 1515 int i;
1b6737cc 1516 const UV mask =
7d8e7db3 1517 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1518 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1519 const UV aligned =
43c32782
JH
1520 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1521
1522 /* See if all the arguments are contiguous in memory. Note
1523 * that 'contiguous' is a loose term because some platforms
1524 * align the argv[] and the envp[]. If the arguments look
1525 * like non-aligned, assume that they are 'strictly' or
1526 * 'traditionally' contiguous. If the arguments look like
1527 * aligned, we just check that they are within aligned
1528 * PTRSIZE bytes. As long as no system has something bizarre
1529 * like the argv[] interleaved with some other data, we are
1530 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1531 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1532 while (*s) s++;
1533 for (i = 1; i < PL_origargc; i++) {
1534 if ((PL_origargv[i] == s + 1
43c32782 1535#ifdef OS2
c8941eeb 1536 || PL_origargv[i] == s + 2
43c32782 1537#endif
c8941eeb
JH
1538 )
1539 ||
1540 (aligned &&
1541 (PL_origargv[i] > s &&
1542 PL_origargv[i] <=
1543 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1544 )
1545 {
1546 s = PL_origargv[i];
1547 while (*s) s++;
1548 }
1549 else
1550 break;
54bfe034 1551 }
54bfe034 1552 }
a4a109c2
JD
1553
1554#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1555 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1556 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1557 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1558 ||
1559 (aligned &&
1560 (PL_origenviron[0] > s &&
1561 PL_origenviron[0] <=
1562 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1563 )
1564 {
9d419b5f 1565#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1566 s = PL_origenviron[0];
1567 while (*s) s++;
1568#endif
bd61b366 1569 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1570 /* Force copy of environment. */
1571 for (i = 1; PL_origenviron[i]; i++) {
1572 if (PL_origenviron[i] == s + 1
1573 ||
1574 (aligned &&
1575 (PL_origenviron[i] > s &&
1576 PL_origenviron[i] <=
1577 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1578 )
1579 {
1580 s = PL_origenviron[i];
1581 while (*s) s++;
1582 }
1583 else
1584 break;
54bfe034 1585 }
43c32782 1586 }
54bfe034 1587 }
a4a109c2
JD
1588#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1589
2d2af554 1590 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1591 }
1592
3280af22 1593 if (PL_do_undump) {
a0d0e21e
LW
1594
1595 /* Come here if running an undumped a.out. */
1596
3280af22
NIS
1597 PL_origfilename = savepv(argv[0]);
1598 PL_do_undump = FALSE;
a0d0e21e 1599 cxstack_ix = -1; /* start label stack again */
748a9306 1600 init_ids();
284167a5 1601 assert (!TAINT_get);
b7975bdd
NC
1602 TAINT;
1603 S_set_caret_X(aTHX);
1604 TAINT_NOT;
a0d0e21e
LW
1605 init_postdump_symbols(argc,argv,env);
1606 return 0;
1607 }
1608
3280af22 1609 if (PL_main_root) {
3280af22 1610 op_free(PL_main_root);
5f66b61c 1611 PL_main_root = NULL;
ff0cee69 1612 }
5f66b61c 1613 PL_main_start = NULL;
3280af22 1614 SvREFCNT_dec(PL_main_cv);
601f1833 1615 PL_main_cv = NULL;
79072805 1616
3280af22
NIS
1617 time(&PL_basetime);
1618 oldscope = PL_scopestack_ix;
599cee73 1619 PL_dowarn = G_WARN_OFF;
f86702cc 1620
14dd3ad8 1621 JMPENV_PUSH(ret);
6224f72b 1622 switch (ret) {
312caa8e 1623 case 0:
14dd3ad8 1624 parse_body(env,xsinit);
9ebf26ad 1625 if (PL_unitcheckav) {
3c10abe3 1626 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1627 }
1628 if (PL_checkav) {
ca7b837b 1629 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1630 call_list(oldscope, PL_checkav);
9ebf26ad 1631 }
14dd3ad8
GS
1632 ret = 0;
1633 break;
6224f72b
GS
1634 case 1:
1635 STATUS_ALL_FAILURE;
1636 /* FALL THROUGH */
1637 case 2:
1638 /* my_exit() was called */
3280af22 1639 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1640 LEAVE;
1641 FREETMPS;
03d9f026 1642 SET_CURSTASH(PL_defstash);
9ebf26ad 1643 if (PL_unitcheckav) {
3c10abe3 1644 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1645 }
1646 if (PL_checkav) {
ca7b837b 1647 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1648 call_list(oldscope, PL_checkav);
9ebf26ad 1649 }
37038d91 1650 ret = STATUS_EXIT;
14dd3ad8 1651 break;
6224f72b 1652 case 3:
bf49b057 1653 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1654 ret = 1;
1655 break;
6224f72b 1656 }
14dd3ad8
GS
1657 JMPENV_POP;
1658 return ret;
1659}
1660
4a5df386
NC
1661/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1662 miniperl, and we need to see those flags reflected in the values here. */
1663
1664/* What this returns is subject to change. Use the public interface in Config.
1665 */
1666static void
1667S_Internals_V(pTHX_ CV *cv)
1668{
1669 dXSARGS;
1670#ifdef LOCAL_PATCH_COUNT
1671 const int local_patch_count = LOCAL_PATCH_COUNT;
1672#else
1673 const int local_patch_count = 0;
1674#endif
2dc296d2 1675 const int entries = 3 + local_patch_count;
4a5df386 1676 int i;
fe1c5936 1677 static const char non_bincompat_options[] =
4a5df386
NC
1678# ifdef DEBUGGING
1679 " DEBUGGING"
1680# endif
1681# ifdef NO_MATHOMS
0d311fbe 1682 " NO_MATHOMS"
4a5df386
NC
1683# endif
1684# ifdef PERL_DISABLE_PMC
1685 " PERL_DISABLE_PMC"
1686# endif
1687# ifdef PERL_DONT_CREATE_GVSV
1688 " PERL_DONT_CREATE_GVSV"
1689# endif
9a044a43
NC
1690# ifdef PERL_EXTERNAL_GLOB
1691 " PERL_EXTERNAL_GLOB"
1692# endif
4a5df386
NC
1693# ifdef PERL_IS_MINIPERL
1694 " PERL_IS_MINIPERL"
1695# endif
1696# ifdef PERL_MALLOC_WRAP
1697 " PERL_MALLOC_WRAP"
1698# endif
1699# ifdef PERL_MEM_LOG
1700 " PERL_MEM_LOG"
1701# endif
1702# ifdef PERL_MEM_LOG_NOIMPL
1703 " PERL_MEM_LOG_NOIMPL"
1704# endif
c3cf41ec
NC
1705# ifdef PERL_PRESERVE_IVUV
1706 " PERL_PRESERVE_IVUV"
1707# endif
c051e30b
NC
1708# ifdef PERL_RELOCATABLE_INCPUSH
1709 " PERL_RELOCATABLE_INCPUSH"
1710# endif
4a5df386
NC
1711# ifdef PERL_USE_DEVEL
1712 " PERL_USE_DEVEL"
1713# endif
1714# ifdef PERL_USE_SAFE_PUTENV
1715 " PERL_USE_SAFE_PUTENV"
1716# endif
a3749cf3
NC
1717# ifdef UNLINK_ALL_VERSIONS
1718 " UNLINK_ALL_VERSIONS"
1719# endif
de618ee4
NC
1720# ifdef USE_ATTRIBUTES_FOR_PERLIO
1721 " USE_ATTRIBUTES_FOR_PERLIO"
1722# endif
4a5df386
NC
1723# ifdef USE_FAST_STDIO
1724 " USE_FAST_STDIO"
1725# endif
98548bdf
NC
1726# ifdef USE_LOCALE
1727 " USE_LOCALE"
1728# endif
98548bdf
NC
1729# ifdef USE_LOCALE_CTYPE
1730 " USE_LOCALE_CTYPE"
1731# endif
5a8d8935
NC
1732# ifdef USE_PERL_ATOF
1733 " USE_PERL_ATOF"
1734# endif
0d311fbe
NC
1735# ifdef USE_SITECUSTOMIZE
1736 " USE_SITECUSTOMIZE"
1737# endif
4a5df386
NC
1738 ;
1739 PERL_UNUSED_ARG(cv);
1740 PERL_UNUSED_ARG(items);
1741
1742 EXTEND(SP, entries);
1743
1744 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1745 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1746 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1747
1748#ifdef __DATE__
1749# ifdef __TIME__
1750 PUSHs(Perl_newSVpvn_flags(aTHX_
1751 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1752 SVs_TEMP));
1753# else
1754 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1755 SVs_TEMP));
1756# endif
1757#else
1758 PUSHs(&PL_sv_undef);
1759#endif
1760
4a5df386
NC
1761 for (i = 1; i <= local_patch_count; i++) {
1762 /* This will be an undef, if PL_localpatches[i] is NULL. */
1763 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1764 }
1765
1766 XSRETURN(entries);
1767}
1768
be71fc8f
NC
1769#define INCPUSH_UNSHIFT 0x01
1770#define INCPUSH_ADD_OLD_VERS 0x02
1771#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1772#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1773#define INCPUSH_NOT_BASEDIR 0x10
1774#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1775#define INCPUSH_ADD_SUB_DIRS \
1776 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1777
312caa8e 1778STATIC void *
14dd3ad8 1779S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1780{
27da23d5 1781 dVAR;
2f9285f8 1782 PerlIO *rsfp;
312caa8e 1783 int argc = PL_origargc;
8f42b153 1784 char **argv = PL_origargv;
e1ec3a88 1785 const char *scriptname = NULL;
312caa8e 1786 VOL bool dosearch = FALSE;
eb578fdb 1787 char c;
737c24fc 1788 bool doextract = FALSE;
bd61b366 1789 const char *cddir = NULL;
ab019eaa 1790#ifdef USE_SITECUSTOMIZE
20ef40cf 1791 bool minus_f = FALSE;
ab019eaa 1792#endif
95670bde 1793 SV *linestr_sv = NULL;
5486870f 1794 bool add_read_e_script = FALSE;
87606032 1795 U32 lex_start_flags = 0;
009d90df 1796
ca7b837b 1797 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1798
6224f72b 1799 init_main_stash();
54310121 1800
c7030b81
NC
1801 {
1802 const char *s;
6224f72b
GS
1803 for (argc--,argv++; argc > 0; argc--,argv++) {
1804 if (argv[0][0] != '-' || !argv[0][1])
1805 break;
6224f72b
GS
1806 s = argv[0]+1;
1807 reswitch:
47f56822 1808 switch ((c = *s)) {
729a02f2 1809 case 'C':
1d5472a9
GS
1810#ifndef PERL_STRICT_CR
1811 case '\r':
1812#endif
6224f72b
GS
1813 case ' ':
1814 case '0':
1815 case 'F':
1816 case 'a':
1817 case 'c':
1818 case 'd':
1819 case 'D':
1820 case 'h':
1821 case 'i':
1822 case 'l':
1823 case 'M':
1824 case 'm':
1825 case 'n':
1826 case 'p':
1827 case 's':
1828 case 'u':
1829 case 'U':
1830 case 'v':
599cee73
PM
1831 case 'W':
1832 case 'X':
6224f72b 1833 case 'w':
97bd5664 1834 if ((s = moreswitches(s)))
6224f72b
GS
1835 goto reswitch;
1836 break;
33b78306 1837
1dbad523 1838 case 't':
284167a5
SM
1839#if SILENT_NO_TAINT_SUPPORT
1840 /* silently ignore */
1841#elif NO_TAINT_SUPPORT
1842 Perl_croak("This perl was compiled without taint support. "
1843 "Cowardly refusing to run with -t or -T flags");
1844#else
22f7c9c9 1845 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1846 if( !TAINTING_get ) {
1847 TAINT_WARN_set(TRUE);
1848 TAINTING_set(TRUE);
317ea90d 1849 }
284167a5 1850#endif
317ea90d
MS
1851 s++;
1852 goto reswitch;
6224f72b 1853 case 'T':
284167a5
SM
1854#if SILENT_NO_TAINT_SUPPORT
1855 /* silently ignore */
1856#elif NO_TAINT_SUPPORT
1857 Perl_croak("This perl was compiled without taint support. "
1858 "Cowardly refusing to run with -t or -T flags");
1859#else
22f7c9c9 1860 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1861 TAINTING_set(TRUE);
1862 TAINT_WARN_set(FALSE);
1863#endif
6224f72b
GS
1864 s++;
1865 goto reswitch;
f86702cc 1866
bc9b29db
RH
1867 case 'E':
1868 PL_minus_E = TRUE;
1869 /* FALL THROUGH */
6224f72b 1870 case 'e':
f20b2998 1871 forbid_setid('e', FALSE);
3280af22 1872 if (!PL_e_script) {
396482e1 1873 PL_e_script = newSVpvs("");
5486870f 1874 add_read_e_script = TRUE;
6224f72b
GS
1875 }
1876 if (*++s)
3280af22 1877 sv_catpv(PL_e_script, s);
6224f72b 1878 else if (argv[1]) {
3280af22 1879 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1880 argc--,argv++;
1881 }
1882 else
47f56822 1883 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1884 sv_catpvs(PL_e_script, "\n");
6224f72b 1885 break;
afe37c7d 1886
20ef40cf 1887 case 'f':
f5542d3a 1888#ifdef USE_SITECUSTOMIZE
20ef40cf 1889 minus_f = TRUE;
f5542d3a 1890#endif
20ef40cf
GA
1891 s++;
1892 goto reswitch;
1893
6224f72b 1894 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1895 forbid_setid('I', FALSE);
bd61b366 1896 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1897 argc--,argv++;
1898 }
6224f72b 1899 if (s && *s) {
0df16ed7 1900 STRLEN len = strlen(s);
55b4bc1c 1901 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1902 }
1903 else
a67e862a 1904 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1905 break;
6224f72b 1906 case 'S':
f20b2998 1907 forbid_setid('S', FALSE);
6224f72b
GS
1908 dosearch = TRUE;
1909 s++;
1910 goto reswitch;
1911 case 'V':
7edfd0ef
NC
1912 {
1913 SV *opts_prog;
1914
7edfd0ef 1915 if (*++s != ':') {
37ca4a5b 1916 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1917 }
1918 else {
1919 ++s;
1920 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1921 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1922 0, s, 0);
1923 s += strlen(s);
1924 }
37ca4a5b 1925 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1926 /* don't look for script or read stdin */
1927 scriptname = BIT_BUCKET;
1928 goto reswitch;
6224f72b 1929 }
6224f72b 1930 case 'x':
737c24fc 1931 doextract = TRUE;
6224f72b 1932 s++;
304334da 1933 if (*s)
f4c556ac 1934 cddir = s;
6224f72b
GS
1935 break;
1936 case 0:
1937 break;
1938 case '-':
1939 if (!*++s || isSPACE(*s)) {
1940 argc--,argv++;
1941 goto switch_end;
1942 }
ee8bc8b7
NC
1943 /* catch use of gnu style long options.
1944 Both of these exit immediately. */
1945 if (strEQ(s, "version"))
1946 minus_v();
1947 if (strEQ(s, "help"))
1948 usage();
6224f72b
GS
1949 s--;
1950 /* FALL THROUGH */
1951 default:
cea2e8a9 1952 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1953 }
1954 }
c7030b81
NC
1955 }
1956
6224f72b 1957 switch_end:
54310121 1958
c7030b81
NC
1959 {
1960 char *s;
1961
f675dbe5
CB
1962 if (
1963#ifndef SECURE_INTERNAL_GETENV
284167a5 1964 !TAINTING_get &&
f675dbe5 1965#endif
cf756827 1966 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1967 {
74288ac8
GS
1968 while (isSPACE(*s))
1969 s++;
317ea90d 1970 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
1971#if SILENT_NO_TAINT_SUPPORT
1972 /* silently ignore */
1973#elif NO_TAINT_SUPPORT
1974 Perl_croak("This perl was compiled without taint support. "
1975 "Cowardly refusing to run with -t or -T flags");
1976#else
22f7c9c9 1977 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1978 TAINTING_set(TRUE);
1979 TAINT_WARN_set(FALSE);
1980#endif
317ea90d 1981 }
74288ac8 1982 else {
bd61b366 1983 char *popt_copy = NULL;
74288ac8 1984 while (s && *s) {
54913509 1985 const char *d;
74288ac8
GS
1986 while (isSPACE(*s))
1987 s++;
1988 if (*s == '-') {
1989 s++;
1990 if (isSPACE(*s))
1991 continue;
1992 }
4ea8f8fb 1993 d = s;
74288ac8
GS
1994 if (!*s)
1995 break;
2b622f1a 1996 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1997 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1998 while (++s && *s) {
1999 if (isSPACE(*s)) {
cf756827 2000 if (!popt_copy) {
bfa6c418
NC
2001 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2002 s = popt_copy + (s - d);
2003 d = popt_copy;
cf756827 2004 }
4ea8f8fb
MS
2005 *s++ = '\0';
2006 break;
2007 }
2008 }
1c4db469 2009 if (*d == 't') {
284167a5
SM
2010#if SILENT_NO_TAINT_SUPPORT
2011 /* silently ignore */
2012#elif NO_TAINT_SUPPORT
2013 Perl_croak("This perl was compiled without taint support. "
2014 "Cowardly refusing to run with -t or -T flags");
2015#else
2016 if( !TAINTING_get) {
2017 TAINT_WARN_set(TRUE);
2018 TAINTING_set(TRUE);
317ea90d 2019 }
284167a5 2020#endif
1c4db469 2021 } else {
97bd5664 2022 moreswitches(d);
1c4db469 2023 }
6224f72b 2024 }
6224f72b
GS
2025 }
2026 }
c7030b81 2027 }
a0d0e21e 2028
c29067d7
CH
2029 /* Set $^X early so that it can be used for relocatable paths in @INC */
2030 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2031 assert (!TAINT_get);
c29067d7
CH
2032 TAINT;
2033 S_set_caret_X(aTHX);
2034 TAINT_NOT;
2035
43c0c913 2036#if defined(USE_SITECUSTOMIZE)
20ef40cf 2037 if (!minus_f) {
43c0c913 2038 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2039 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2040 ie a q() operator with a NUL byte as a the delimiter. This avoids
2041 problems with pathnames containing (say) ' */
43c0c913
NC
2042# ifdef PERL_IS_MINIPERL
2043 AV *const inc = GvAV(PL_incgv);
2044 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2045
2046 if (inc0) {
2047 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2048 Perl_newSVpvf(aTHX_
fc81b718
NC
2049 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2050 0, *inc0, 0,
2051 0, *inc0, 0));
43c0c913
NC
2052 }
2053# else
2054 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2055 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2056 if (raw_sitelib) {
2057 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2058 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2059 INCPUSH_CAN_RELOCATE);
2060 const char *const sitelib = SvPVX(sitelib_sv);
2061 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2062 Perl_newSVpvf(aTHX_
2063 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2064 0, sitelib, 0,
2065 0, sitelib, 0));
2066 assert (SvREFCNT(sitelib_sv) == 1);
2067 SvREFCNT_dec(sitelib_sv);
2068 }
43c0c913 2069# endif
20ef40cf
GA
2070 }
2071#endif
2072
6224f72b
GS
2073 if (!scriptname)
2074 scriptname = argv[0];
3280af22 2075 if (PL_e_script) {
6224f72b
GS
2076 argc++,argv--;
2077 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2078 }
bd61b366 2079 else if (scriptname == NULL) {
6224f72b
GS
2080#ifdef MSDOS
2081 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2082 moreswitches("h");
6224f72b
GS
2083#endif
2084 scriptname = "-";
2085 }
2086
284167a5 2087 assert (!TAINT_get);
2cace6ac 2088 init_perllib();
6224f72b 2089
a52eba0e 2090 {
f20b2998 2091 bool suidscript = FALSE;
829372d3 2092
8d113837 2093 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2094 if (!rsfp) {
2095 rsfp = PerlIO_stdin();
87606032 2096 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2097 }
6224f72b 2098
b24bc095 2099 validate_suid(rsfp);
6224f72b 2100
64ca3a65 2101#ifndef PERL_MICRO
a52eba0e
NC
2102# if defined(SIGCHLD) || defined(SIGCLD)
2103 {
2104# ifndef SIGCHLD
2105# define SIGCHLD SIGCLD
2106# endif
2107 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2108 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2109 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2110 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2111 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2112 }
0b5b802d 2113 }
a52eba0e 2114# endif
64ca3a65 2115#endif
0b5b802d 2116
737c24fc 2117 if (doextract) {
faef540c 2118
f20b2998 2119 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2120 setuid scripts. */
2121 forbid_setid('x', suidscript);
f20b2998 2122 /* Hence you can't get here if suidscript is true */
faef540c 2123
95670bde
NC
2124 linestr_sv = newSV_type(SVt_PV);
2125 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2126 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2127 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2128 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2129 }
f4c556ac 2130 }
6224f72b 2131
ea726b52 2132 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2133 CvUNIQUE_on(PL_compcv);
2134
dd2155a4 2135 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2136
dd69841b
BB
2137 PL_isarev = newHV();
2138
0c4f7ff0 2139 boot_core_PerlIO();
6224f72b 2140 boot_core_UNIVERSAL();
e1a479c5 2141 boot_core_mro();
4a5df386 2142 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2143
2144 if (xsinit)
acfe0abc 2145 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2146#ifndef PERL_MICRO
739a0b84 2147#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2148 init_os_extras();
6224f72b 2149#endif
64ca3a65 2150#endif
6224f72b 2151
29209bc5 2152#ifdef USE_SOCKS
1b9c9cf5
DH
2153# ifdef HAS_SOCKS5_INIT
2154 socks5_init(argv[0]);
2155# else
29209bc5 2156 SOCKSinit(argv[0]);
1b9c9cf5 2157# endif
ac27b0f5 2158#endif
29209bc5 2159
6224f72b
GS
2160 init_predump_symbols();
2161 /* init_postdump_symbols not currently designed to be called */
2162 /* more than once (ENV isn't cleared first, for example) */
2163 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2164 if (!PL_do_undump)
6224f72b
GS
2165 init_postdump_symbols(argc,argv,env);
2166
27da23d5
JH
2167 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2168 * or explicitly in some platforms.
085a54d9 2169 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2170 * look like the user wants to use UTF-8. */
a0fd4948 2171#if defined(__SYMBIAN32__)
27da23d5
JH
2172 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2173#endif
e27b5b51 2174# ifndef PERL_IS_MINIPERL
06e66572
JH
2175 if (PL_unicode) {
2176 /* Requires init_predump_symbols(). */
a05d7ebb 2177 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2178 IO* io;
2179 PerlIO* fp;
2180 SV* sv;
2181
a05d7ebb 2182 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2183 * and the default open disciplines. */
a05d7ebb
JH
2184 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2185 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2186 (fp = IoIFP(io)))
2187 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2188 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2189 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2190 (fp = IoOFP(io)))
2191 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2192 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2193 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2194 (fp = IoOFP(io)))
2195 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2196 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2197 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2198 SVt_PV)))) {
a05d7ebb
JH
2199 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2200 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2201 if (in) {
2202 if (out)
76f68e9b 2203 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2204 else
76f68e9b 2205 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2206 }
2207 else if (out)
76f68e9b 2208 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2209 SvSETMAGIC(sv);
2210 }
b310b053
JH
2211 }
2212 }
e27b5b51 2213#endif
b310b053 2214
c7030b81
NC
2215 {
2216 const char *s;
4ffa73a3
JH
2217 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2218 if (strEQ(s, "unsafe"))
2219 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2220 else if (strEQ(s, "safe"))
2221 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2222 else
2223 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2224 }
c7030b81 2225 }
4ffa73a3 2226
81d86705 2227#ifdef PERL_MAD
c7030b81
NC
2228 {
2229 const char *s;
284167a5 2230 if (!TAINTING_get &&
2cc12391 2231 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2232 PL_madskills = 1;
2233 PL_minus_c = 1;
2234 if (!s || !s[0])
2235 PL_xmlfp = PerlIO_stdout();
2236 else {
2237 PL_xmlfp = PerlIO_open(s, "w");
2238 if (!PL_xmlfp)
2239 Perl_croak(aTHX_ "Can't open %s", s);
2240 }
1a9a51d4 2241 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2242 }
c7030b81
NC
2243 }
2244
2245 {
2246 const char *s;
81d86705
NC
2247 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2248 PL_madskills = atoi(s);
1a9a51d4 2249 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2250 }
c7030b81 2251 }
81d86705
NC
2252#endif
2253
87606032 2254 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2255 SvREFCNT_dec(linestr_sv);
95670bde 2256
219f7226 2257 PL_subname = newSVpvs("main");
6224f72b 2258
5486870f
DM
2259 if (add_read_e_script)
2260 filter_add(read_e_script, NULL);
2261
6224f72b
GS
2262 /* now parse the script */
2263
93189314 2264 SETERRNO(0,SS_NORMAL);
28ac2b49 2265 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2266 if (PL_minus_c)
cea2e8a9 2267 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2268 else {
cea2e8a9 2269 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2270 PL_origfilename);
6224f72b
GS
2271 }
2272 }
57843af0 2273 CopLINE_set(PL_curcop, 0);
03d9f026 2274 SET_CURSTASH(PL_defstash);
3280af22
NIS
2275 if (PL_e_script) {
2276 SvREFCNT_dec(PL_e_script);
a0714e2c 2277 PL_e_script = NULL;
6224f72b
GS
2278 }
2279
3280af22 2280 if (PL_do_undump)
6224f72b
GS
2281 my_unexec();
2282
57843af0
GS
2283 if (isWARN_ONCE) {
2284 SAVECOPFILE(PL_curcop);
2285 SAVECOPLINE(PL_curcop);
3280af22 2286 gv_check(PL_defstash);
57843af0 2287 }
6224f72b
GS
2288
2289 LEAVE;
2290 FREETMPS;
2291
2292#ifdef MYMALLOC
f6a607bc
RGS
2293 {
2294 const char *s;
6224f72b
GS
2295 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2296 dump_mstats("after compilation:");
f6a607bc 2297 }
6224f72b
GS
2298#endif
2299
2300 ENTER;
febb3a6d 2301 PL_restartjmpenv = NULL;
3280af22 2302 PL_restartop = 0;
312caa8e 2303 return NULL;
6224f72b
GS
2304}
2305
954c1994
GS
2306/*
2307=for apidoc perl_run
2308
2309Tells a Perl interpreter to run. See L<perlembed>.
2310
2311=cut
2312*/
2313
6224f72b 2314int
0cb96387 2315perl_run(pTHXx)
6224f72b 2316{
97aff369 2317 dVAR;
6224f72b 2318 I32 oldscope;
14dd3ad8 2319 int ret = 0;
db36c5a1 2320 dJMPENV;
6224f72b 2321
7918f24d
NC
2322 PERL_ARGS_ASSERT_PERL_RUN;
2323#ifndef MULTIPLICITY
ed6c66dd 2324 PERL_UNUSED_ARG(my_perl);
7918f24d 2325#endif
9d4ba2ae 2326
3280af22 2327 oldscope = PL_scopestack_ix;
96e176bf
CL
2328#ifdef VMS
2329 VMSISH_HUSHED = 0;
2330#endif
6224f72b 2331
14dd3ad8 2332 JMPENV_PUSH(ret);
6224f72b
GS
2333 switch (ret) {
2334 case 1:
2335 cxstack_ix = -1; /* start context stack again */
312caa8e 2336 goto redo_body;
14dd3ad8 2337 case 0: /* normal completion */
14dd3ad8
GS
2338 redo_body:
2339 run_body(oldscope);
14dd3ad8
GS
2340 /* FALL THROUGH */
2341 case 2: /* my_exit() */
3280af22 2342 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2343 LEAVE;
2344 FREETMPS;
03d9f026 2345 SET_CURSTASH(PL_defstash);
3a1ee7e8 2346 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2347 PL_endav && !PL_minus_c) {
ca7b837b 2348 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2349 call_list(oldscope, PL_endav);
9ebf26ad 2350 }
6224f72b
GS
2351#ifdef MYMALLOC
2352 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2353 dump_mstats("after execution: ");
2354#endif
37038d91 2355 ret = STATUS_EXIT;
14dd3ad8 2356 break;
6224f72b 2357 case 3:
312caa8e
CS
2358 if (PL_restartop) {
2359 POPSTACK_TO(PL_mainstack);
2360 goto redo_body;
6224f72b 2361 }
5637ef5b 2362 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2363 FREETMPS;
14dd3ad8
GS
2364 ret = 1;
2365 break;
6224f72b
GS
2366 }
2367
14dd3ad8
GS
2368 JMPENV_POP;
2369 return ret;
312caa8e
CS
2370}
2371
dd374669 2372STATIC void
14dd3ad8
GS
2373S_run_body(pTHX_ I32 oldscope)
2374{
97aff369 2375 dVAR;
d3b97530
DM
2376 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2377 PL_sawampersand ? "Enabling" : "Omitting",
2378 (unsigned int)(PL_sawampersand)));
6224f72b 2379
3280af22 2380 if (!PL_restartop) {
81d86705
NC
2381#ifdef PERL_MAD
2382 if (PL_xmlfp) {
2383 xmldump_all();
2384 exit(0); /* less likely to core dump than my_exit(0) */
2385 }
2386#endif
cf2782cd 2387#ifdef DEBUGGING
f0e3f042
CS
2388 if (DEBUG_x_TEST || DEBUG_B_TEST)
2389 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2390 if (!DEBUG_q_TEST)
2391 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2392#endif
6224f72b 2393
3280af22 2394 if (PL_minus_c) {
bf49b057 2395 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2396 my_exit(0);
2397 }
3280af22 2398 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2399 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2400 if (PL_initav) {
ca7b837b 2401 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2402 call_list(oldscope, PL_initav);
9ebf26ad 2403 }
f1fac472 2404#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2405 if (PL_main_root && PL_main_root->op_slabbed)
2406 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2407#endif
6224f72b
GS
2408 }
2409
2410 /* do it */
2411
ca7b837b 2412 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2413
3280af22 2414 if (PL_restartop) {
febb3a6d 2415 PL_restartjmpenv = NULL;
533c011a 2416 PL_op = PL_restartop;
3280af22 2417 PL_restartop = 0;
cea2e8a9 2418 CALLRUNOPS(aTHX);
6224f72b 2419 }
3280af22
NIS
2420 else if (PL_main_start) {
2421 CvDEPTH(PL_main_cv) = 1;
533c011a 2422 PL_op = PL_main_start;
cea2e8a9 2423 CALLRUNOPS(aTHX);
6224f72b 2424 }
f6b3007c 2425 my_exit(0);
118e2215 2426 assert(0); /* NOTREACHED */
6224f72b
GS
2427}
2428
954c1994 2429/*
ccfc67b7
JH
2430=head1 SV Manipulation Functions
2431
954c1994
GS
2432=for apidoc p||get_sv
2433
64ace3f8
NC
2434Returns the SV of the specified Perl scalar. C<flags> are passed to
2435C<gv_fetchpv>. If C<GV_ADD> is set and the
2436Perl variable does not exist then it will be created. If C<flags> is zero
2437and the variable does not exist then NULL is returned.
954c1994
GS
2438
2439=cut
2440*/
2441
6224f72b 2442SV*
64ace3f8 2443Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2444{
2445 GV *gv;
7918f24d
NC
2446
2447 PERL_ARGS_ASSERT_GET_SV;
2448
64ace3f8 2449 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2450 if (gv)
2451 return GvSV(gv);
a0714e2c 2452 return NULL;
6224f72b
GS
2453}
2454
954c1994 2455/*
ccfc67b7
JH
2456=head1 Array Manipulation Functions
2457
954c1994
GS
2458=for apidoc p||get_av
2459
f0b90de1
SF
2460Returns the AV of the specified Perl global or package array with the given
2461name (so it won't work on lexical variables). C<flags> are passed
2462to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2463Perl variable does not exist then it will be created. If C<flags> is zero
2464and the variable does not exist then NULL is returned.
954c1994 2465
f0b90de1
SF
2466Perl equivalent: C<@{"$name"}>.
2467
954c1994
GS
2468=cut
2469*/
2470
6224f72b 2471AV*
cbfd0a87 2472Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2473{
cbfd0a87 2474 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2475
2476 PERL_ARGS_ASSERT_GET_AV;
2477
cbfd0a87 2478 if (flags)
6224f72b
GS
2479 return GvAVn(gv);
2480 if (gv)
2481 return GvAV(gv);
7d49f689 2482 return NULL;
6224f72b
GS
2483}
2484
954c1994 2485/*
ccfc67b7
JH
2486=head1 Hash Manipulation Functions
2487
954c1994
GS
2488=for apidoc p||get_hv
2489
6673a63c
NC
2490Returns the HV of the specified Perl hash. C<flags> are passed to
2491C<gv_fetchpv>. If C<GV_ADD> is set and the
2492Perl variable does not exist then it will be created. If C<flags> is zero
2493and the variable does not exist then NULL is returned.
954c1994
GS
2494
2495=cut
2496*/
2497
6224f72b 2498HV*
6673a63c 2499Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2500{
6673a63c 2501 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2502
2503 PERL_ARGS_ASSERT_GET_HV;
2504
6673a63c 2505 if (flags)
a0d0e21e
LW
2506 return GvHVn(gv);
2507 if (gv)
2508 return GvHV(gv);
5c284bb0 2509 return NULL;
a0d0e21e
LW
2510}
2511
954c1994 2512/*
ccfc67b7
JH
2513=head1 CV Manipulation Functions
2514
780a5241
NC
2515=for apidoc p||get_cvn_flags
2516
2517Returns the CV of the specified Perl subroutine. C<flags> are passed to
2518C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2519exist then it will be declared (which has the same effect as saying
2520C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2521then NULL is returned.
2522
954c1994
GS
2523=for apidoc p||get_cv
2524
780a5241 2525Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2526
2527=cut
2528*/
2529
a0d0e21e 2530CV*
780a5241 2531Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2532{
780a5241 2533 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2534
2535 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2536
334dda80
FC
2537 /* XXX this is probably not what they think they're getting.
2538 * It has the same effect as "sub name;", i.e. just a forward
2539 * declaration! */
780a5241 2540 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2541 return newSTUB(gv,0);
780a5241 2542 }
a0d0e21e 2543 if (gv)
8ebc5c01 2544 return GvCVu(gv);
601f1833 2545 return NULL;
a0d0e21e
LW
2546}
2547
2c67934f
NC
2548/* Nothing in core calls this now, but we can't replace it with a macro and
2549 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2550CV*
2551Perl_get_cv(pTHX_ const char *name, I32 flags)
2552{
7918f24d
NC
2553 PERL_ARGS_ASSERT_GET_CV;
2554
780a5241
NC
2555 return get_cvn_flags(name, strlen(name), flags);
2556}
2557
79072805
LW
2558/* Be sure to refetch the stack pointer after calling these routines. */
2559
954c1994 2560/*
ccfc67b7
JH
2561
2562=head1 Callback Functions
2563
954c1994
GS
2564=for apidoc p||call_argv
2565
f0b90de1
SF
2566Performs a callback to the specified named and package-scoped Perl subroutine
2567with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2568
2569Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2570
2571=cut
2572*/
2573
a0d0e21e 2574I32
5aaab254 2575Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2576
8ac85365
NIS
2577 /* See G_* flags in cop.h */
2578 /* null terminated arg list */
8990e307 2579{
97aff369 2580 dVAR;
a0d0e21e 2581 dSP;
8990e307 2582
7918f24d
NC
2583 PERL_ARGS_ASSERT_CALL_ARGV;
2584
924508f0 2585 PUSHMARK(SP);
a0d0e21e 2586 if (argv) {
8990e307 2587 while (*argv) {
6e449a3a 2588 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2589 argv++;
2590 }
a0d0e21e 2591 PUTBACK;
8990e307 2592 }
864dbfa3 2593 return call_pv(sub_name, flags);
8990e307
LW
2594}
2595
954c1994
GS
2596/*
2597=for apidoc p||call_pv
2598
2599Performs a callback to the specified Perl sub. See L<perlcall>.
2600
2601=cut
2602*/
2603
a0d0e21e 2604I32
864dbfa3 2605Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2606 /* name of the subroutine */
2607 /* See G_* flags in cop.h */
a0d0e21e 2608{
7918f24d
NC
2609 PERL_ARGS_ASSERT_CALL_PV;
2610
0da0e728 2611 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2612}
2613
954c1994
GS
2614/*
2615=for apidoc p||call_method
2616
2617Performs a callback to the specified Perl method. The blessed object must
2618be on the stack. See L<perlcall>.
2619
2620=cut
2621*/
2622
a0d0e21e 2623I32
864dbfa3 2624Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2625 /* name of the subroutine */
2626 /* See G_* flags in cop.h */
a0d0e21e 2627{
46ca9bac 2628 STRLEN len;
7918f24d
NC
2629 PERL_ARGS_ASSERT_CALL_METHOD;
2630
46ca9bac 2631 len = strlen(methname);
2632
2633 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2634 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2635}
2636
2637/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2638/*
2639=for apidoc p||call_sv
2640
2641Performs a callback to the Perl sub whose name is in the SV. See
2642L<perlcall>.
2643
2644=cut
2645*/
2646
a0d0e21e 2647I32
001d637e 2648Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2649 /* See G_* flags in cop.h */
a0d0e21e 2650{
27da23d5 2651 dVAR; dSP;
a0d0e21e 2652 LOGOP myop; /* fake syntax tree node */
968b3946 2653 UNOP method_op;
aa689395 2654 I32 oldmark;
8ea43dc8 2655 VOL I32 retval = 0;
a0d0e21e 2656 I32 oldscope;
54310121 2657 bool oldcatch = CATCH_GET;
6224f72b 2658 int ret;
c4420975 2659 OP* const oldop = PL_op;
db36c5a1 2660 dJMPENV;
1e422769 2661
7918f24d
NC
2662 PERL_ARGS_ASSERT_CALL_SV;
2663
a0d0e21e
LW
2664 if (flags & G_DISCARD) {
2665 ENTER;
2666 SAVETMPS;
2667 }
2f8edad0
NC
2668 if (!(flags & G_WANT)) {
2669 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2670 */
2671 flags |= G_SCALAR;
2672 }
a0d0e21e 2673
aa689395 2674 Zero(&myop, 1, LOGOP);
f51d4af5 2675 if (!(flags & G_NOARGS))
aa689395 2676 myop.op_flags |= OPf_STACKED;
4f911530 2677 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2678 SAVEOP();
533c011a 2679 PL_op = (OP*)&myop;
aa689395 2680
3280af22
NIS
2681 EXTEND(PL_stack_sp, 1);
2682 *++PL_stack_sp = sv;
aa689395 2683 oldmark = TOPMARK;
3280af22 2684 oldscope = PL_scopestack_ix;
a0d0e21e 2685
3280af22 2686 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2687 /* Handle first BEGIN of -d. */
3280af22 2688 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2689 /* Try harder, since this may have been a sighandler, thus
2690 * curstash may be meaningless. */
ea726b52 2691 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2692 && !(flags & G_NODEBUG))
5ff48db8 2693 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2694
968b3946
GS
2695 if (flags & G_METHOD) {
2696 Zero(&method_op, 1, UNOP);
5ff48db8 2697 method_op.op_next = (OP*)&myop;
968b3946 2698 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2699 method_op.op_type = OP_METHOD;
968b3946 2700 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2701 myop.op_type = OP_ENTERSUB;
f39d0b86 2702 PL_op = (OP*)&method_op;
968b3946
GS
2703 }
2704
312caa8e 2705 if (!(flags & G_EVAL)) {
0cdb2077 2706 CATCH_SET(TRUE);
d6f07c05 2707 CALL_BODY_SUB((OP*)&myop);
312caa8e 2708 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2709 CATCH_SET(oldcatch);
312caa8e
CS
2710 }
2711 else {
d78bda3d 2712 myop.op_other = (OP*)&myop;
3280af22 2713 PL_markstack_ptr--;
edb2152a 2714 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2715 PL_markstack_ptr++;
a0d0e21e 2716
14dd3ad8 2717 JMPENV_PUSH(ret);
edb2152a 2718
6224f72b
GS
2719 switch (ret) {
2720 case 0:
14dd3ad8 2721 redo_body:
d6f07c05 2722 CALL_BODY_SUB((OP*)&myop);
312caa8e 2723 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2724 if (!(flags & G_KEEPERR)) {
ab69dbc2 2725 CLEAR_ERRSV();
8433848b 2726 }
a0d0e21e 2727 break;
6224f72b 2728 case 1:
f86702cc 2729 STATUS_ALL_FAILURE;
a0d0e21e 2730 /* FALL THROUGH */
6224f72b 2731 case 2:
a0d0e21e 2732 /* my_exit() was called */
03d9f026 2733 SET_CURSTASH(PL_defstash);
a0d0e21e 2734 FREETMPS;
14dd3ad8 2735 JMPENV_POP;
f86702cc 2736 my_exit_jump();
118e2215 2737 assert(0); /* NOTREACHED */
6224f72b 2738 case 3:
3280af22 2739 if (PL_restartop) {
febb3a6d 2740 PL_restartjmpenv = NULL;
533c011a 2741 PL_op = PL_restartop;
3280af22 2742 PL_restartop = 0;
312caa8e 2743 goto redo_body;
a0d0e21e 2744 }
3280af22 2745 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2746 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2747 retval = 0;
2748 else {
2749 retval = 1;
3280af22 2750 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2751 }
312caa8e 2752 break;
a0d0e21e 2753 }
a0d0e21e 2754
edb2152a
NC
2755 if (PL_scopestack_ix > oldscope)
2756 delete_eval_scope();
14dd3ad8 2757 JMPENV_POP;
a0d0e21e 2758 }
1e422769 2759
a0d0e21e 2760 if (flags & G_DISCARD) {
3280af22 2761 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2762 retval = 0;
2763 FREETMPS;
2764 LEAVE;
2765 }
533c011a 2766 PL_op = oldop;
a0d0e21e
LW
2767 return retval;
2768}
2769
6e72f9df 2770/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2771
954c1994
GS
2772/*
2773=for apidoc p||eval_sv
2774
be064c4a
DM
2775Tells Perl to C<eval> the string in the SV. It supports the same flags
2776as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2777
2778=cut
2779*/
2780
a0d0e21e 2781I32
864dbfa3 2782Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2783
8ac85365 2784 /* See G_* flags in cop.h */
a0d0e21e 2785{
97aff369 2786 dVAR;
924508f0 2787 dSP;
a0d0e21e 2788 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2789 VOL I32 oldmark = SP - PL_stack_base;
2790 VOL I32 retval = 0;
6224f72b 2791 int ret;
c4420975 2792 OP* const oldop = PL_op;
db36c5a1 2793 dJMPENV;
84902520 2794
7918f24d
NC
2795 PERL_ARGS_ASSERT_EVAL_SV;
2796
4633a7c4
LW
2797 if (flags & G_DISCARD) {
2798 ENTER;
2799 SAVETMPS;
2800 }
2801
462e5cf6 2802 SAVEOP();
533c011a 2803 PL_op = (OP*)&myop;
5ff48db8 2804 Zero(&myop, 1, UNOP);
3280af22
NIS
2805 EXTEND(PL_stack_sp, 1);
2806 *++PL_stack_sp = sv;
79072805 2807
4633a7c4
LW
2808 if (!(flags & G_NOARGS))
2809 myop.op_flags = OPf_STACKED;
6e72f9df 2810 myop.op_type = OP_ENTEREVAL;
4f911530 2811 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2812 if (flags & G_KEEPERR)
2813 myop.op_flags |= OPf_SPECIAL;
d24ca0c5
DM
2814 if (PL_reg_state.re_reparsing)
2815 myop.op_private = OPpEVAL_COPHH;
4633a7c4 2816
dedbcade
DM
2817 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2818 * before a PUSHEVAL, which corrupts the stack after a croak */
2819 TAINT_PROPER("eval_sv()");
2820
14dd3ad8 2821 JMPENV_PUSH(ret);
6224f72b
GS
2822 switch (ret) {
2823 case 0:
14dd3ad8 2824 redo_body:
2ba65d5f
DM
2825 if (PL_op == (OP*)(&myop)) {
2826 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2827 if (!PL_op)
2828 goto fail; /* failed in compilation */
2829 }
4aca2f62 2830 CALLRUNOPS(aTHX);
312caa8e 2831 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2832 if (!(flags & G_KEEPERR)) {
ab69dbc2 2833 CLEAR_ERRSV();
8433848b 2834 }
4633a7c4 2835 break;
6224f72b 2836 case 1:
f86702cc 2837 STATUS_ALL_FAILURE;
4633a7c4 2838 /* FALL THROUGH */
6224f72b 2839 case 2:
4633a7c4 2840 /* my_exit() was called */
03d9f026 2841 SET_CURSTASH(PL_defstash);
4633a7c4 2842 FREETMPS;
14dd3ad8 2843 JMPENV_POP;
f86702cc 2844 my_exit_jump();
118e2215 2845 assert(0); /* NOTREACHED */
6224f72b 2846 case 3:
3280af22 2847 if (PL_restartop) {
febb3a6d 2848 PL_restartjmpenv = NULL;
533c011a 2849 PL_op = PL_restartop;
3280af22 2850 PL_restartop = 0;
312caa8e 2851 goto redo_body;
4633a7c4 2852 }
4aca2f62 2853 fail:
3280af22 2854 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2855 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2856 retval = 0;
2857 else {
2858 retval = 1;
3280af22 2859 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2860 }
312caa8e 2861 break;
4633a7c4
LW
2862 }
2863
14dd3ad8 2864 JMPENV_POP;
4633a7c4 2865 if (flags & G_DISCARD) {
3280af22 2866 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2867 retval = 0;
2868 FREETMPS;
2869 LEAVE;
2870 }
533c011a 2871 PL_op = oldop;
4633a7c4
LW
2872 return retval;
2873}
2874
954c1994
GS
2875/*
2876=for apidoc p||eval_pv
2877
2878Tells Perl to C<eval> the given string and return an SV* result.
2879
2880=cut
2881*/
2882
137443ea 2883SV*
864dbfa3 2884Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2885{
97aff369 2886 dVAR;
137443ea
PP
2887 SV* sv = newSVpv(p, 0);
2888
7918f24d
NC
2889 PERL_ARGS_ASSERT_EVAL_PV;
2890
864dbfa3 2891 eval_sv(sv, G_SCALAR);
137443ea
PP
2892 SvREFCNT_dec(sv);
2893
ed1786ad
DD
2894 {
2895 dSP;
2896 sv = POPs;
2897 PUTBACK;
2898 }
137443ea 2899
eed484f9
DD
2900 /* just check empty string or undef? */
2901 if (croak_on_error) {
2902 SV * const errsv = ERRSV;
2903 if(SvTRUE_NN(errsv))
2904 /* replace with croak_sv? */
2905 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2906 }
137443ea
PP
2907
2908 return sv;
2909}
2910
4633a7c4
LW
2911/* Require a module. */
2912
954c1994 2913/*
ccfc67b7
JH
2914=head1 Embedding Functions
2915
954c1994
GS
2916=for apidoc p||require_pv
2917
7d3fb230
BS
2918Tells Perl to C<require> the file named by the string argument. It is
2919analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2920implemented that way; consider using load_module instead.
954c1994 2921
7d3fb230 2922=cut */
954c1994 2923
4633a7c4 2924void
864dbfa3 2925Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2926{
97aff369 2927 dVAR;
d3acc0f7 2928 dSP;
97aff369 2929 SV* sv;
7918f24d
NC
2930
2931 PERL_ARGS_ASSERT_REQUIRE_PV;
2932
e788e7d3 2933 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2934 PUTBACK;
be41e5d9
NC
2935 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2936 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2937 SPAGAIN;
2938 POPSTACK;
79072805
LW
2939}
2940
76e3520e 2941STATIC void
b6f82619 2942S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2943{
ab821d7f 2944 /* This message really ought to be max 23 lines.
75c72d73 2945 * Removed -h because the user already knows that option. Others? */
fb73857a 2946
1566c39d
NC
2947 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2948 minimum of 509 character string literals. */
27da23d5 2949 static const char * const usage_msg[] = {
1566c39d
NC
2950" -0[octal] specify record separator (\\0, if no argument)\n"
2951" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2952" -C[number/list] enables the listed Unicode features\n"
2953" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2954" -d[:debugger] run program under debugger\n"
2955" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2956" -e program one line of program (several -e's allowed, omit programfile)\n"
2957" -E program like -e, but enables all optional features\n"
2958" -f don't do $sitelib/sitecustomize.pl at startup\n"
2959" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2960" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2961" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2962" -l[octal] enable line ending processing, specifies line terminator\n"
2963" -[mM][-]module execute \"use/no module...\" before executing program\n"
2964" -n assume \"while (<>) { ... }\" loop around program\n"
2965" -p assume loop like -n but print line also, like sed\n"
2966" -s enable rudimentary parsing for switches after programfile\n"
2967" -S look for programfile using PATH environment variable\n",
2968" -t enable tainting warnings\n"
2969" -T enable tainting checks\n"
2970" -u dump core after parsing program\n"
2971" -U allow unsafe operations\n"
2972" -v print version, patchlevel and license\n"
2973" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2974" -w enable many useful warnings\n"
1566c39d
NC
2975" -W enable all warnings\n"
2976" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2977" -X disable all warnings\n"
2978" \n"
2979"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2980NULL
2981};
27da23d5 2982 const char * const *p = usage_msg;
1566c39d 2983 PerlIO *out = PerlIO_stdout();
fb73857a 2984
1566c39d
NC
2985 PerlIO_printf(out,
2986 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2987 PL_origargv[0]);
fb73857a 2988 while (*p)
1566c39d 2989 PerlIO_puts(out, *p++);
b6f82619 2990 my_exit(0);
4633a7c4
LW
2991}
2992
b4ab917c
DM
2993/* convert a string of -D options (or digits) into an int.
2994 * sets *s to point to the char after the options */
2995
2996#ifdef DEBUGGING
2997int
e1ec3a88 2998Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2999{
27da23d5 3000 static const char * const usage_msgd[] = {
651b8f1a
NC
3001 " Debugging flag values: (see also -d)\n"
3002 " p Tokenizing and parsing (with v, displays parse stack)\n"
3003 " s Stack snapshots (with v, displays all stacks)\n"
3004 " l Context (loop) stack processing\n"
3005 " t Trace execution\n"
3006 " o Method and overloading resolution\n",
3007 " c String/numeric conversions\n"
3008 " P Print profiling info, source file input state\n"
3009 " m Memory and SV allocation\n"
3010 " f Format processing\n"
3011 " r Regular expression parsing and execution\n"
3012 " x Syntax tree dump\n",
3013 " u Tainting checks\n"
3014 " H Hash dump -- usurps values()\n"
3015 " X Scratchpad allocation\n"
3016 " D Cleaning up\n"
56967202 3017 " S Op slab allocation\n"
651b8f1a
NC
3018 " T Tokenising\n"
3019 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3020 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3021 " v Verbose: use in conjunction with other flags\n"
3022 " C Copy On Write\n"
3023 " A Consistency checks on internal structures\n"
3024 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3025 " M trace smart match resolution\n"
3026 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3027 NULL
3028 };
b4ab917c 3029 int i = 0;
7918f24d
NC
3030
3031 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3032
b4ab917c
DM
3033 if (isALPHA(**s)) {
3034 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3035 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c 3036
0eb30aeb 3037 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3038 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3039 if (d)
3040 i |= 1 << (d - debopts);
3041 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3042 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3043 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3044 }
3045 }
e6e64d9b 3046 else if (isDIGIT(**s)) {
b4ab917c 3047 i = atoi(*s);
0eb30aeb 3048 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3049 }
ddcf8bc1 3050 else if (givehelp) {
06e869a4 3051 const char *const *p = usage_msgd;
651b8f1a 3052 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3053 }
b4ab917c
DM
3054# ifdef EBCDIC
3055 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3056 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3057 "-Dp not implemented on this platform\n");
3058# endif
3059 return i;
3060}
3061#endif
3062
79072805
LW
3063/* This routine handles any switches that can be given during run */
3064
c7030b81
NC
3065const char *
3066Perl_moreswitches(pTHX_ const char *s)
79072805 3067{
27da23d5 3068 dVAR;
84c133a0 3069 UV rschar;
0544e6df 3070 const char option = *s; /* used to remember option in -m/-M code */
79072805 3071
7918f24d
NC
3072 PERL_ARGS_ASSERT_MORESWITCHES;
3073
79072805
LW
3074 switch (*s) {
3075 case '0':
a863c7d1 3076 {
f2095865 3077 I32 flags = 0;
a3b680e6 3078 STRLEN numlen;
f2095865
JH
3079
3080 SvREFCNT_dec(PL_rs);
3081 if (s[1] == 'x' && s[2]) {
a3b680e6 3082 const char *e = s+=2;
f2095865
JH
3083 U8 *tmps;
3084
a3b680e6
AL
3085 while (*e)
3086 e++;
f2095865
JH
3087 numlen = e - s;
3088 flags = PERL_SCAN_SILENT_ILLDIGIT;
3089 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3090 if (s + numlen < e) {
3091 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3092 numlen = 0;
3093 s--;
3094 }
396482e1 3095 PL_rs = newSVpvs("");
c5661c80 3096 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3097 tmps = (U8*)SvPVX(PL_rs);
3098 uvchr_to_utf8(tmps, rschar);
3099 SvCUR_set(PL_rs, UNISKIP(rschar));
3100 SvUTF8_on(PL_rs);
3101 }
3102 else {
3103 numlen = 4;
3104 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3105 if (rschar & ~((U8)~0))
3106 PL_rs = &PL_sv_undef;
3107 else if (!rschar && numlen >= 2)
396482e1 3108 PL_rs = newSVpvs("");
f2095865
JH
3109 else {
3110 char ch = (char)rschar;
3111 PL_rs = newSVpvn(&ch, 1);
3112 }
3113 }
64ace3f8 3114 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3115 return s + numlen;
a863c7d1 3116 }
46487f74 3117 case 'C':
a05d7ebb 3118 s++;
dd374669 3119 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3120 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3121 PL_utf8cache = -1;
46487f74 3122 return s;
2304df62 3123 case 'F':
3280af22 3124 PL_minus_F = TRUE;
ebce5377
RGS
3125 PL_splitstr = ++s;
3126 while (*s && !isSPACE(*s)) ++s;
e49e380e 3127 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3128 return s;
79072805 3129 case 'a':
3280af22 3130 PL_minus_a = TRUE;
79072805
LW
3131 s++;
3132 return s;
3133 case 'c':
3280af22 3134 PL_minus_c = TRUE;
79072805
LW
3135 s++;
3136 return s;
3137 case 'd':
f20b2998 3138 forbid_setid('d', FALSE);
4633a7c4 3139 s++;
2cbb2ee1
RGS
3140
3141 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3142 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3143 ++s;
3144 my_setenv("PERL5DB_THREADED", "1");
3145 }
3146
70c94a19
RR
3147 /* The following permits -d:Mod to accepts arguments following an =
3148 in the fashion that -MSome::Mod does. */
3149 if (*s == ':' || *s == '=') {
b19934fb
NC
3150 const char *start;
3151 const char *end;
3152 SV *sv;
3153
3154 if (*++s == '-') {
3155 ++s;
3156 sv = newSVpvs("no Devel::");
3157 } else {
3158 sv = newSVpvs("use Devel::");
3159 }
3160
3161 start = s;
3162 end = s + strlen(s);
f85893a1 3163
b19934fb 3164 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3165 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3166 if (*s != '=')
f85893a1 3167 sv_catpvn(sv, start, end - start);
70c94a19
RR
3168 else {
3169 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3170 /* Don't use NUL as q// delimiter here, this string goes in the
3171 * environment. */
3172 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3173 }
f85893a1 3174 s = end;
184f32ec 3175 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3176 SvREFCNT_dec(sv);
4633a7c4 3177 }
ed094faf 3178 if (!PL_perldb) {
3280af22 3179 PL_perldb = PERLDB_ALL;
a0d0e21e 3180 init_debugger();
ed094faf 3181 }
79072805
LW
3182 return s;
3183 case 'D':
0453d815 3184 {
79072805 3185#ifdef DEBUGGING
f20b2998 3186 forbid_setid('D', FALSE);
b4ab917c 3187 s++;
dd374669 3188 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3189#else /* !DEBUGGING */
0453d815 3190 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3191 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3192 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3193 for (s++; isWORDCHAR(*s); s++) ;
79072805 3194#endif
79072805 3195 return s;
0453d815 3196 }
4633a7c4 3197 case 'h':
b6f82619 3198 usage();
79072805 3199 case 'i':
43c5f42d 3200 Safefree(PL_inplace);
c030f24b
GH
3201#if defined(__CYGWIN__) /* do backup extension automagically */
3202 if (*(s+1) == '\0') {
c86a4f2e 3203 PL_inplace = savepvs(".bak");
c030f24b
GH
3204 return s+1;
3205 }
3206#endif /* __CYGWIN__ */
5ef5d758 3207 {
d4c19fe8 3208 const char * const start = ++s;
5ef5d758
NC
3209 while (*s && !isSPACE(*s))
3210 ++s;
3211
3212 PL_inplace = savepvn(start, s - start);
3213 }
7b8d334a 3214 if (*s) {
5ef5d758 3215 ++s;
7b8d334a 3216 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3217 s++;
7b8d334a 3218 }
fb73857a 3219 return s;
4e49a025 3220 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3221 forbid_setid('I', FALSE);
fb73857a
PP
3222 ++s;
3223 while (*s && isSPACE(*s))
3224 ++s;
3225 if (*s) {
c7030b81 3226 const char *e, *p;
0df16ed7
GS
3227 p = s;
3228 /* ignore trailing spaces (possibly followed by other switches) */
3229 do {
3230 for (e = p; *e && !isSPACE(*e); e++) ;
3231 p = e;
3232 while (isSPACE(*p))
3233 p++;
3234 } while (*p && *p != '-');
55b4bc1c 3235 incpush(s, e-s,
e28f3139 3236 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3237 s = p;
3238 if (*s == '-')
3239 s++;
79072805
LW
3240 }
3241 else
a67e862a 3242 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3243 return s;
79072805 3244 case 'l':
3280af22 3245 PL_minus_l = TRUE;
79072805 3246 s++;
7889fe52
NIS
3247 if (PL_ors_sv) {
3248 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3249 PL_ors_sv = NULL;
7889fe52 3250 }
79072805 3251 if (isDIGIT(*s)) {
53305cf1 3252 I32 flags = 0;
a3b680e6 3253 STRLEN numlen;
396482e1 3254 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3255 numlen = 3 + (*s == '0');
3256 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3257 s += numlen;
3258 }
3259 else {
8bfdd7d9 3260 if (RsPARA(PL_rs)) {
396482e1 3261 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3262 }
3263 else {
8bfdd7d9 3264 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3265 }
79072805
LW
3266 }
3267 return s;
1a30305b 3268 case 'M':
f20b2998 3269 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3270 /* FALL THROUGH */
3271 case 'm':
f20b2998 3272 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3273 if (*++s) {
c7030b81 3274 const char *start;
b64cb68c 3275 const char *end;
11343788 3276 SV *sv;
e1ec3a88 3277 const char *use = "use ";
0544e6df 3278 bool colon = FALSE;
a5f75d66 3279 /* -M-foo == 'no foo' */
d0043bd1
NC
3280 /* Leading space on " no " is deliberate, to make both
3281 possibilities the same length. */
3282 if (*s == '-') { use = " no "; ++s; }
3283 sv = newSVpvn(use,4);
a5f75d66 3284 start = s;
1a30305b 3285 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3286 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3287 if( *s++ == ':' ) {
3288 if( *s == ':' )
3289 s++;
3290 else
3291 colon = TRUE;
3292 }
3293 }
3294 if (s == start)
3295 Perl_croak(aTHX_ "Module name required with -%c option",
3296 option);
3297 if (colon)
3298 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3299 "contains single ':'",
63da6837 3300 (int)(s - start), start, option);
b64cb68c 3301 end = s + strlen(s);
c07a80fd 3302 if (*s != '=') {
b64cb68c 3303 sv_catpvn(sv, start, end - start);
0544e6df 3304 if (option == 'm') {
c07a80fd 3305 if (*s != '\0')
cea2e8a9 3306 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3307 sv_catpvs( sv, " ()");
c07a80fd
PP
3308 }
3309 } else {
11343788 3310 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3311 /* Use NUL as q''-delimiter. */
3312 sv_catpvs(sv, " split(/,/,q\0");
3313 ++s;
3314 sv_catpvn(sv, s, end - s);
396482e1 3315 sv_catpvs(sv, "\0)");
c07a80fd 3316 }
b64cb68c 3317 s = end;
29a861e7 3318 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3319 }
3320 else
0544e6df 3321 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3322 return s;
79072805 3323 case 'n':
3280af22 3324 PL_minus_n = TRUE;
79072805
LW
3325 s++;
3326 return s;
3327 case 'p':
3280af22 3328 PL_minus_p = TRUE;
79072805
LW
3329 s++;
3330 return s;
3331 case 's':
f20b2998 3332 forbid_setid('s', FALSE);
3280af22 3333 PL_doswitches = TRUE;
79072805
LW
3334 s++;
3335 return s;
6537fe72 3336 case 't':
27a6968b 3337 case 'T':
284167a5
SM
3338#if SILENT_NO_TAINT_SUPPORT
3339 /* silently ignore */
3340#elif NO_TAINT_SUPPORT
3341 Perl_croak("This perl was compiled without taint support. "
3342 "Cowardly refusing to run with -t or -T flags");
3343#else
3344 if (!TAINTING_get)
27a6968b 3345 TOO_LATE_FOR(*s);
284167a5 3346#endif
6537fe72 3347 s++;
463ee0b2 3348 return s;
79072805 3349 case 'u':
3280af22 3350 PL_do_undump = TRUE;
79072805
LW
3351 s++;
3352 return s;
3353 case 'U':
3280af22 3354 PL_unsafe = TRUE;
79072805
LW
3355 s++;
3356 return s;
3357 case 'v':
c4bc78d9
NC
3358 minus_v();
3359 case 'w':
3360 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3361 PL_dowarn |= G_WARN_ON;
3362 }
3363 s++;
3364 return s;
3365 case 'W':
3366 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3367 if (!specialWARN(PL_compiling.cop_warnings))
3368 PerlMemShared_free(PL_compiling.cop_warnings);
3369 PL_compiling.cop_warnings = pWARN_ALL ;
3370 s++;
3371 return s;
3372 case 'X':
3373 PL_dowarn = G_WARN_ALL_OFF;
3374 if (!specialWARN(PL_compiling.cop_warnings))
3375 PerlMemShared_free(PL_compiling.cop_warnings);
3376 PL_compiling.cop_warnings = pWARN_NONE ;
3377 s++;
3378 return s;
3379 case '*':
3380 case ' ':
3381 while( *s == ' ' )
3382 ++s;
3383 if (s[0] == '-') /* Additional switches on #! line. */
3384 return s+1;
3385 break;
3386 case '-':
3387 case 0:
3388#if defined(WIN32) || !defined(PERL_STRICT_CR)
3389 case '\r':
3390#endif
3391 case '\n':
3392 case '\t':
3393 break;
3394#ifdef ALTERNATE_SHEBANG
3395 case 'S': /* OS/2 needs -S on "extproc" line. */
3396 break;
3397#endif
4bb78d63
CB
3398 case 'e': case 'f': case 'x': case 'E':
3399#ifndef ALTERNATE_SHEBANG
3400 case 'S':
3401#endif
3402 case 'V':
c4bc78d9 3403 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3404 default:
3405 Perl_croak(aTHX_
3406 "Unrecognized switch: -%.1s (-h will show valid options)",s
3407 );
c4bc78d9
NC
3408 }
3409 return NULL;
3410}
3411
3412
3413STATIC void
3414S_minus_v(pTHX)
3415{
fc3381af 3416 PerlIO * PIO_stdout;
d7aa5382 3417 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3418 upg_version(PL_patchlevel, TRUE);
8e9464f1 3419#if !defined(DGUX)
46807d8e
YO
3420 {
3421 SV* level= vstringify(PL_patchlevel);
3422#ifdef PERL_PATCHNUM
23d483e2
NC
3423# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3424 SV *num = newSVpvs(PERL_PATCHNUM "*");
3425# else
3426 SV *num = newSVpvs(PERL_PATCHNUM);
3427# endif
fc3381af
DD
3428 {
3429 STRLEN level_len, num_len;
3430 char * level_str, * num_str;
3431 num_str = SvPV(num, num_len);
3432 level_str = SvPV(level, level_len);
3433 if (num_len>=level_len && strnEQ(num_str,level_str,level_len)) {
3434 SvREFCNT_dec(level);
3435 level= num;
3436 } else {
3437 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
3438 SvREFCNT_dec(num);
3439 }
46807d8e
YO
3440 }
3441 #endif
fc3381af
DD
3442 PIO_stdout = PerlIO_stdout();
3443 PerlIO_printf(PIO_stdout,
ded326e4
DG
3444 "\nThis is perl " STRINGIFY(PERL_REVISION)
3445 ", version " STRINGIFY(PERL_VERSION)
3446 ", subversion " STRINGIFY(PERL_SUBVERSION)
3447 " (%"SVf") built for " ARCHNAME, level
3448 );
46807d8e
YO
3449 SvREFCNT_dec(level);
3450 }
8e9464f1 3451#else /* DGUX */
fc3381af 3452 PIO_stdout = PerlIO_stdout();
8e9464f1 3453/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
fc3381af 3454 PerlIO_printf(PIO_stdout,
52ea0aec 3455 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3456 SVfARG(vstringify(PL_patchlevel))));
fc3381af 3457 PerlIO_printf(PIO_stdout,
8e9464f1
JH
3458 Perl_form(aTHX_ " built under %s at %s %s\n",
3459 OSNAME, __DATE__, __TIME__));
fc3381af 3460 PerlIO_printf(PIO_stdout,
8e9464f1 3461 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3462 OSVERS));
8e9464f1 3463#endif /* !DGUX */
fb73857a
PP
3464#if defined(LOCAL_PATCH_COUNT)
3465 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3466 PerlIO_printf(PIO_stdout,
b0e47665
GS
3467 "\n(with %d registered patch%s, "
3468 "see perl -V for more detail)",
bb7a0f54 3469 LOCAL_PATCH_COUNT,
b0e47665 3470 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3471#endif
1a30305b 3472
fc3381af 3473 PerlIO_printf(PIO_stdout,
d907e2e9 3474 "\n\nCopyright 1987-2013, Larry Wall\n");
79072805 3475#ifdef MSDOS
fc3381af 3476 PerlIO_printf(PIO_stdout,
b0e47665 3477 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3478#endif
3479#ifdef DJGPP
fc3381af 3480 PerlIO_printf(PIO_stdout,
b0e47665
GS
3481 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3482 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3483#endif
79072805 3484#ifdef OS2
fc3381af 3485 PerlIO_printf(PIO_stdout,
b0e47665 3486 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3487 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3488#endif
9d116dd7 3489#ifdef OEMVS
fc3381af 3490 PerlIO_printf(PIO_stdout,
b0e47665 3491 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3492#endif
495c5fdc 3493#ifdef __VOS__
fc3381af 3494 PerlIO_printf(PIO_stdout,
94efb9fb 3495 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3496#endif
a1a0e61e 3497#ifdef POSIX_BC
fc3381af 3498 PerlIO_printf(PIO_stdout,
b0e47665 3499 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3500#endif
e1caacb4 3501#ifdef UNDER_CE
fc3381af
DD
3502 PerlIO_printf(PIO_stdout,
3503 "WINCE port by Rainer Keuchel, 2001-2002\n"
3504 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3505 wce_hitreturn();
3506#endif
a0fd4948 3507#ifdef __SYMBIAN32__
fc3381af 3508 PerlIO_printf(PIO_stdout,
27da23d5
JH
3509 "Symbian port by Nokia, 2004-2005\n");
3510#endif
baed7233
DL
3511#ifdef BINARY_BUILD_NOTICE
3512 BINARY_BUILD_NOTICE;
3513#endif
fc3381af 3514 PerlIO_printf(PIO_stdout,
b0e47665 3515 "\n\
79072805 3516Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d