This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
sort perldiag
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
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
f3e2e262 6 * 2013, 2014, 2015, 2016, 2017 by Larry Wall and others
a687059c 7 *
352d5a3a
LW
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 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
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
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
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
a1b69980
DM
25 *
26 * Note that at build time this file is also linked to as perlmini.c,
27 * and perlmini.o is then built with PERL_IS_MINIPERL defined, which is
28 * then used to create the miniperl executable, rather than perl.o.
166f8a29
DM
29 */
30
c44493f1 31#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
32# define USE_SITECUSTOMIZE
33#endif
34
378cc40b 35#include "EXTERN.h"
864dbfa3 36#define PERL_IN_PERL_C
378cc40b 37#include "perl.h"
e3321bb0 38#include "patchlevel.h" /* for local_patches */
4a5df386 39#include "XSUB.h"
378cc40b 40
011f1a1a
JH
41#ifdef NETWARE
42#include "nwutil.h"
011f1a1a
JH
43#endif
44
2aa47728 45#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
46# ifdef I_SYSUIO
47# include <sys/uio.h>
48# endif
49
50union control_un {
51 struct cmsghdr cm;
52 char control[CMSG_SPACE(sizeof(int))];
53};
54
2aa47728
NC
55#endif
56
5311654c
JH
57#ifndef HZ
58# ifdef CLK_TCK
59# define HZ CLK_TCK
60# else
61# define HZ 60
62# endif
63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL
73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC
87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC
90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
1e5c5f69 95 KEYWORD_PLUGIN_MUTEX_INIT;
71ad1b0c 96 HINTS_REFCNT_INIT;
929e1213 97 LOCALE_INIT;
e6827a76 98 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
99 MUTEX_INIT(&PL_my_ctx_mutex);
100# endif
e6827a76 101 }
c0bce9aa
NC
102#if defined(USE_ITHREADS)
103 else
104#else
105 /* This always happens for non-ithreads */
106#endif
107 {
e6827a76
NC
108 PERL_SET_THX(my_perl);
109 }
110}
06d86050 111
cbec8ebe
DM
112
113/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
114
115void
116Perl_sys_init(int* argc, char*** argv)
117{
4fc0badb 118 dVAR;
7918f24d
NC
119
120 PERL_ARGS_ASSERT_SYS_INIT;
121
cbec8ebe
DM
122 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
123 PERL_UNUSED_ARG(argv);
124 PERL_SYS_INIT_BODY(argc, argv);
125}
126
127void
128Perl_sys_init3(int* argc, char*** argv, char*** env)
129{
4fc0badb 130 dVAR;
7918f24d
NC
131
132 PERL_ARGS_ASSERT_SYS_INIT3;
133
cbec8ebe
DM
134 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
135 PERL_UNUSED_ARG(argv);
136 PERL_UNUSED_ARG(env);
137 PERL_SYS_INIT3_BODY(argc, argv, env);
138}
139
140void
88772978 141Perl_sys_term(void)
cbec8ebe 142{
4fc0badb 143 dVAR;
bf81751b
DM
144 if (!PL_veto_cleanup) {
145 PERL_SYS_TERM_BODY();
146 }
cbec8ebe
DM
147}
148
149
32e30700
GS
150#ifdef PERL_IMPLICIT_SYS
151PerlInterpreter *
7766f137
GS
152perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
153 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
154 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
155 struct IPerlDir* ipD, struct IPerlSock* ipS,
156 struct IPerlProc* ipP)
157{
158 PerlInterpreter *my_perl;
7918f24d
NC
159
160 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
161
9f653bb5 162 /* Newx() needs interpreter, so call malloc() instead */
32e30700 163 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 164 S_init_tls_and_interp(my_perl);
32e30700
GS
165 Zero(my_perl, 1, PerlInterpreter);
166 PL_Mem = ipM;
7766f137
GS
167 PL_MemShared = ipMS;
168 PL_MemParse = ipMP;
32e30700
GS
169 PL_Env = ipE;
170 PL_StdIO = ipStd;
171 PL_LIO = ipLIO;
172 PL_Dir = ipD;
173 PL_Sock = ipS;
174 PL_Proc = ipP;
7cb608b5 175 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 176
32e30700
GS
177 return my_perl;
178}
179#else
954c1994
GS
180
181/*
ccfc67b7
JH
182=head1 Embedding Functions
183
954c1994
GS
184=for apidoc perl_alloc
185
186Allocates a new Perl interpreter. See L<perlembed>.
187
188=cut
189*/
190
93a17b20 191PerlInterpreter *
cea2e8a9 192perl_alloc(void)
79072805 193{
cea2e8a9 194 PerlInterpreter *my_perl;
79072805 195
9f653bb5 196 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 197 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 198
e6827a76 199 S_init_tls_and_interp(my_perl);
7cb608b5 200#ifndef PERL_TRACK_MEMPOOL
07409e01 201 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
202#else
203 Zero(my_perl, 1, PerlInterpreter);
204 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
205 return my_perl;
206#endif
79072805 207}
32e30700 208#endif /* PERL_IMPLICIT_SYS */
79072805 209
954c1994
GS
210/*
211=for apidoc perl_construct
212
213Initializes a new Perl interpreter. See L<perlembed>.
214
215=cut
216*/
217
0927ade0 218static void
219S_fixup_platform_bugs(void)
220{
221#if defined(__GLIBC__) && IVSIZE == 8 \
222 && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
223 {
224 IV l = 3;
225 IV r = -10;
226 /* Cannot do this check with inlined IV constants since
227 * that seems to work correctly even with the buggy glibc. */
228 if (l % r == -3) {
229 dTHX;
230 /* Yikes, we have the bug.
231 * Patch in the workaround version. */
232 PL_ppaddr[OP_I_MODULO] = &Perl_pp_i_modulo_glibc_bugfix;
233 }
234 }
235#endif
236}
237
79072805 238void
0cb96387 239perl_construct(pTHXx)
79072805 240{
27da23d5 241 dVAR;
7918f24d
NC
242
243 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
244
8990e307 245#ifdef MULTIPLICITY
54aff467 246 init_interp();
ac27b0f5 247 PL_perl_destruct_level = 1;
54aff467 248#else
7918f24d 249 PERL_UNUSED_ARG(my_perl);
54aff467
GS
250 if (PL_perl_destruct_level > 0)
251 init_interp();
252#endif
34caed6d
DM
253 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
254
75d476e2
SM
255#ifdef PERL_TRACE_OPS
256 Zero(PL_op_exec_cnt, OP_max+2, UV);
257#endif
258
0d96b528 259 init_constants();
34caed6d 260
e04fc1aa
CB
261 SvREADONLY_on(&PL_sv_placeholder);
262 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
263
264 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
265#ifdef PERL_USES_PL_PIDSTATUS
266 PL_pidstatus = newHV();
267#endif
268
269 PL_rs = newSVpvs("\n");
270
271 init_stacks();
272
273/* The PERL_INTERNAL_RAND_SEED set-up must be after init_stacks because it calls
274 * things that may put SVs on the stack.
275 */
276
d6295071 277#ifdef NO_PERL_INTERNAL_RAND_SEED
f26b33bd 278 Perl_drand48_init_r(&PL_internal_random_state, seed());
d6295071
TC
279#else
280 {
281 UV seed;
282 const char *env_pv;
283 if (PerlProc_getuid() != PerlProc_geteuid() ||
284 PerlProc_getgid() != PerlProc_getegid() ||
285 !(env_pv = PerlEnv_getenv("PERL_INTERNAL_RAND_SEED")) ||
286 grok_number(env_pv, strlen(env_pv), &seed) != IS_NUMBER_IN_UV) {
287 seed = seed();
288 }
289 Perl_drand48_init_r(&PL_internal_random_state, (U32)seed);
290 }
291#endif
f26b33bd 292
748a9306 293 init_ids();
a5f75d66 294
0927ade0 295 S_fixup_platform_bugs();
296
312caa8e 297 JMPENV_BOOTSTRAP;
f86702cc
PP
298 STATUS_ALL_SUCCESS;
299
0672f40e 300 init_i18nl10n(1);
0b5b802d 301
ab821d7f 302#if defined(LOCAL_PATCH_COUNT)
3280af22 303 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
304#endif
305
fa2e4594
TC
306#if defined(LIBM_LIB_VERSION)
307 /*
308 * Some BSDs and Cygwin default to POSIX math instead of IEEE.
309 * This switches them over to IEEE.
310 */
311 _LIB_VERSION = _IEEE_;
312#endif
313
52853b95
GS
314#ifdef HAVE_INTERP_INTERN
315 sys_intern_init();
316#endif
317
3a1ee7e8 318 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 319
3280af22
NIS
320 PL_fdpid = newAV(); /* for remembering popen pids by fd */
321 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 322 PL_errors = newSVpvs("");
854da30f
YO
323 SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
324 SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
325 SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
1fcf4c12 326#ifdef USE_ITHREADS
402d2eb1
NC
327 /* First entry is a list of empty elements. It needs to be initialised
328 else all hell breaks loose in S_find_uninit_var(). */
329 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 330 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 331 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 332#endif
e5dd39fc 333#ifdef USE_REENTRANT_API
59bd0823 334 Perl_reentrant_init(aTHX);
e5dd39fc 335#endif
e6a172f3 336 if (PL_hash_seed_set == FALSE) {
9d5e3f1a
YO
337 /* Initialize the hash seed and state at startup. This must be
338 * done very early, before ANY hashes are constructed, and once
339 * setup is fixed for the lifetime of the process.
340 *
341 * If you decide to disable the seeding process you should choose
342 * a suitable seed yourself and define PERL_HASH_SEED to a well chosen
343 * string. See hv_func.h for details.
344 */
1a237f4f 345#if defined(USE_HASH_SEED)
9d5e3f1a 346 /* get the hash seed from the environment or from an RNG */
7dc86639 347 Perl_get_hash_seed(aTHX_ PL_hash_seed);
1a237f4f 348#else
9d5e3f1a
YO
349 /* they want a hard coded seed, check that it is long enough */
350 assert( strlen(PERL_HASH_SEED) >= PERL_HASH_SEED_BYTES );
1a237f4f 351#endif
e6a172f3 352
9d5e3f1a
YO
353 /* now we use the chosen seed to initialize the state -
354 * in some configurations this may be a relatively speaking
355 * expensive operation, but we only have to do it once at startup */
356 PERL_HASH_SEED_STATE(PERL_HASH_SEED,PL_hash_state);
357
358#ifdef PERL_USE_SINGLE_CHAR_HASH_CACHE
359 /* we can build a special cache for 0/1 byte keys, if people choose
360 * I suspect most of the time it is not worth it */
361 {
362 char str[2]="\0";
363 int i;
364 for (i=0;i<256;i++) {
365 str[0]= i;
366 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[i],str,1);
367 }
368 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[256],str,0);
369 }
370#endif
371 /* at this point we have initialezed the hash function, and we can start
372 * constructing hashes */
373 PL_hash_seed_set= TRUE;
374 }
c82f4881
N
375
376 /* Allow PL_strtab to be pre-initialized before calling perl_construct.
377 * can use a custom optimized PL_strtab hash before calling perl_construct */
378 if (!PL_strtab) {
379 /* Note that strtab is a rather special HV. Assumptions are made
380 about not iterating on it, and not adding tie magic to it.
381 It is properly deallocated in perl_destruct() */
382 PL_strtab = newHV();
383
384 /* SHAREKEYS tells us that the hash has its keys shared with PL_strtab,
385 * which is not the case with PL_strtab itself */
386 HvSHAREKEYS_off(PL_strtab); /* mandatory */
387 hv_ksplit(PL_strtab, 1 << 11);
388 }
3d47000e 389
a38ab475
RZ
390 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
391
2f42fcb0
JH
392#ifndef PERL_MICRO
393# ifdef USE_ENVIRON_ARRAY
0631ea03 394 PL_origenviron = environ;
2f42fcb0 395# endif
0631ea03
AB
396#endif
397
5311654c 398 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 399 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
400 * The HZ if not originally defined has been by now
401 * been defined as CLK_TCK, if available. */
b6c36746 402#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
403 PL_clocktick = sysconf(_SC_CLK_TCK);
404 if (PL_clocktick <= 0)
405#endif
406 PL_clocktick = HZ;
407
081fc587
AB
408 PL_stashcache = newHV();
409
e8e3635e 410 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 411
27da23d5
JH
412#ifdef HAS_MMAP
413 if (!PL_mmap_page_size) {
414#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
415 {
416 SETERRNO(0, SS_NORMAL);
417# ifdef _SC_PAGESIZE
418 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
419# else
420 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
421# endif
422 if ((long) PL_mmap_page_size < 0) {
f63f4036
Z
423 Perl_croak(aTHX_ "panic: sysconf: %s",
424 errno ? Strerror(errno) : "pagesize unknown");
27da23d5
JH
425 }
426 }
39bb759e 427#elif defined(HAS_GETPAGESIZE)
27da23d5 428 PL_mmap_page_size = getpagesize();
39bb759e 429#elif defined(I_SYS_PARAM) && defined(PAGESIZE)
27da23d5 430 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
27da23d5
JH
431#endif
432 if (PL_mmap_page_size <= 0)
433 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
434 (IV) PL_mmap_page_size);
435 }
436#endif /* HAS_MMAP */
437
438#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
439 PL_timesbase.tms_utime = 0;
440 PL_timesbase.tms_stime = 0;
441 PL_timesbase.tms_cutime = 0;
442 PL_timesbase.tms_cstime = 0;
443#endif
444
7d113631
NC
445 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
446
a3e6e81e 447 PL_registered_mros = newHV();
9e169432
NC
448 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
449 HvMAX(PL_registered_mros) = 0;
a3e6e81e 450
7b8dd5f4
KW
451 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
452 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
453 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
454 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
455 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
456 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
457 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
458 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
459 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
460 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
461 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
462 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
463 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
464 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
465 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
466 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 467 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
468 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
469 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 470 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
9e7ded3f 471 PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist);
5acc3fa5 472#ifdef HAS_POSIX_2008_LOCALE
6ebbc862
KW
473 PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
474#endif
7b8dd5f4 475
8990e307 476 ENTER;
79072805
LW
477}
478
954c1994 479/*
62375a60
NIS
480=for apidoc nothreadhook
481
482Stub that provides thread hook for perl_destruct when there are
483no threads.
484
485=cut
486*/
487
488int
4e9e3734 489Perl_nothreadhook(pTHX)
62375a60 490{
96a5add6 491 PERL_UNUSED_CONTEXT;
62375a60
NIS
492 return 0;
493}
494
41e4abd8
NC
495#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
496void
497Perl_dump_sv_child(pTHX_ SV *sv)
498{
499 ssize_t got;
bf357333
NC
500 const int sock = PL_dumper_fd;
501 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
502 union control_un control;
503 struct msghdr msg;
808ad2d0 504 struct iovec vec[2];
bf357333 505 struct cmsghdr *cmptr;
808ad2d0
NC
506 int returned_errno;
507 unsigned char buffer[256];
41e4abd8 508
7918f24d
NC
509 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
510
bf357333 511 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
512 return;
513
514 PerlIO_flush(Perl_debug_log);
515
bf357333
NC
516 /* All these shenanigans are to pass a file descriptor over to our child for
517 it to dump out to. We can't let it hold open the file descriptor when it
518 forks, as the file descriptor it will dump to can turn out to be one end
519 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 520 be open, the wait would be forever.) */
bf357333
NC
521
522 msg.msg_control = control.control;
523 msg.msg_controllen = sizeof(control.control);
524 /* We're a connected socket so we don't need a destination */
525 msg.msg_name = NULL;
526 msg.msg_namelen = 0;
527 msg.msg_iov = vec;
808ad2d0 528 msg.msg_iovlen = 1;
bf357333
NC
529
530 cmptr = CMSG_FIRSTHDR(&msg);
531 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
532 cmptr->cmsg_level = SOL_SOCKET;
533 cmptr->cmsg_type = SCM_RIGHTS;
534 *((int *)CMSG_DATA(cmptr)) = 1;
535
536 vec[0].iov_base = (void*)&sv;
537 vec[0].iov_len = sizeof(sv);
538 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
539
540 if(got < 0) {
bf357333 541 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
542 abort();
543 }
bf357333
NC
544 if(got < sizeof(sv)) {
545 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
546 abort();
547 }
548
808ad2d0
NC
549 /* Return protocol is
550 int: errno value
551 unsigned char: length of location string (0 for empty)
552 unsigned char*: string (not terminated)
553 */
554 vec[0].iov_base = (void*)&returned_errno;
555 vec[0].iov_len = sizeof(returned_errno);
556 vec[1].iov_base = buffer;
557 vec[1].iov_len = 1;
558
559 got = readv(sock, vec, 2);
41e4abd8
NC
560
561 if(got < 0) {
562 perror("Debug leaking scalars parent read failed");
808ad2d0 563 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
564 abort();
565 }
808ad2d0 566 if(got < sizeof(returned_errno) + 1) {
41e4abd8 567 perror("Debug leaking scalars parent short read");
808ad2d0 568 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
569 abort();
570 }
571
808ad2d0
NC
572 if (*buffer) {
573 got = read(sock, buffer + 1, *buffer);
574 if(got < 0) {
575 perror("Debug leaking scalars parent read 2 failed");
576 PerlIO_flush(PerlIO_stderr());
577 abort();
578 }
579
580 if(got < *buffer) {
581 perror("Debug leaking scalars parent short read 2");
582 PerlIO_flush(PerlIO_stderr());
583 abort();
584 }
585 }
586
587 if (returned_errno || *buffer) {
588 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
589 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 590 returned_errno, Strerror(returned_errno));
41e4abd8
NC
591 }
592}
593#endif
594
62375a60 595/*
954c1994
GS
596=for apidoc perl_destruct
597
598Shuts down a Perl interpreter. See L<perlembed>.
599
600=cut
601*/
602
31d77e54 603int
0cb96387 604perl_destruct(pTHXx)
79072805 605{
27da23d5 606 dVAR;
8162b70e 607 volatile signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 608 HV *hv;
2aa47728 609#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
610 pid_t child;
611#endif
9c0b6888 612 int i;
8990e307 613
7918f24d
NC
614 PERL_ARGS_ASSERT_PERL_DESTRUCT;
615#ifndef MULTIPLICITY
ed6c66dd 616 PERL_UNUSED_ARG(my_perl);
7918f24d 617#endif
9d4ba2ae 618
3d22c4f0
GG
619 assert(PL_scopestack_ix == 1);
620
7766f137
GS
621 /* wait for all pseudo-forked children to finish */
622 PERL_WAIT_FOR_CHILDREN;
623
3280af22 624 destruct_level = PL_perl_destruct_level;
36e77d41 625#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 626 {
9d4ba2ae
AL
627 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
628 if (s) {
96e440d2
JH
629 int i;
630 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
631 i = -1;
632 } else {
22ff3130
HS
633 UV uv;
634 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
635 i = (int)uv;
636 else
637 i = 0;
96e440d2 638 }
36e77d41
DD
639#ifdef DEBUGGING
640 if (destruct_level < i) destruct_level = i;
641#endif
642#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
643 /* RT #114496, for perl_free */
644 PL_perl_destruct_level = i;
36e77d41 645#endif
5f05dabc 646 }
4633a7c4
LW
647 }
648#endif
649
27da23d5 650 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
651 dJMPENV;
652 int x = 0;
653
654 JMPENV_PUSH(x);
1b6737cc 655 PERL_UNUSED_VAR(x);
9ebf26ad 656 if (PL_endav && !PL_minus_c) {
ca7b837b 657 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 658 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 659 }
f3faeb53 660 JMPENV_POP;
26f423df 661 }
f3faeb53 662 LEAVE;
a0d0e21e 663 FREETMPS;
3d22c4f0 664 assert(PL_scopestack_ix == 0);
a0d0e21e 665
e00b64d4 666 /* Need to flush since END blocks can produce output */
8abddda3
TC
667 /* flush stdout separately, since we can identify it */
668#ifdef USE_PERLIO
669 {
670 PerlIO *stdo = PerlIO_stdout();
671 if (*stdo && PerlIO_flush(stdo)) {
672 PerlIO_restore_errno(stdo);
675c73ca
MB
673 if (errno)
674 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
675 Strerror(errno));
8abddda3
TC
676 if (!STATUS_UNIX)
677 STATUS_ALL_FAILURE;
678 }
679 }
680#endif
f13a2bc0 681 my_fflush_all();
e00b64d4 682
75d476e2 683#ifdef PERL_TRACE_OPS
e71f25b3
JC
684 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
685 {
686 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
687 UV uv;
688
689 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
690 || !(uv > 0))
691 goto no_trace_out;
692 }
75d476e2
SM
693 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
694 for (i = 0; i <= OP_max; ++i) {
e71f25b3 695 if (PL_op_exec_cnt[i])
147e3846 696 PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM
697 }
698 /* Utility slot for easily doing little tracing experiments in the runloop: */
699 if (PL_op_exec_cnt[OP_max+1] != 0)
147e3846 700 PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]);
75d476e2 701 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 702 no_trace_out:
75d476e2
SM
703#endif
704
705
16c91539 706 if (PL_threadhook(aTHX)) {
62375a60 707 /* Threads hook has vetoed further cleanup */
c301d606 708 PL_veto_cleanup = TRUE;
37038d91 709 return STATUS_EXIT;
62375a60
NIS
710 }
711
2aa47728
NC
712#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
713 if (destruct_level != 0) {
714 /* Fork here to create a child. Our child's job is to preserve the
715 state of scalars prior to destruction, so that we can instruct it
716 to dump any scalars that we later find have leaked.
717 There's no subtlety in this code - it assumes POSIX, and it doesn't
718 fail gracefully */
719 int fd[2];
720
721 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
722 perror("Debug leaking scalars socketpair failed");
723 abort();
724 }
725
726 child = fork();
727 if(child == -1) {
728 perror("Debug leaking scalars fork failed");
729 abort();
730 }
731 if (!child) {
732 /* We are the child */
3125a5a4
NC
733 const int sock = fd[1];
734 const int debug_fd = PerlIO_fileno(Perl_debug_log);
735 int f;
808ad2d0
NC
736 const char *where;
737 /* Our success message is an integer 0, and a char 0 */
b61433a9 738 static const char success[sizeof(int) + 1] = {0};
3125a5a4 739
2aa47728 740 close(fd[0]);
2aa47728 741
3125a5a4
NC
742 /* We need to close all other file descriptors otherwise we end up
743 with interesting hangs, where the parent closes its end of a
744 pipe, and sits waiting for (another) child to terminate. Only
745 that child never terminates, because it never gets EOF, because
bf357333
NC
746 we also have the far end of the pipe open. We even need to
747 close the debugging fd, because sometimes it happens to be one
748 end of a pipe, and a process is waiting on the other end for
749 EOF. Normally it would be closed at some point earlier in
750 destruction, but if we happen to cause the pipe to remain open,
751 EOF never occurs, and we get an infinite hang. Hence all the
752 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
753
754 f = sysconf(_SC_OPEN_MAX);
755 if(f < 0) {
808ad2d0
NC
756 where = "sysconf failed";
757 goto abort;
3125a5a4
NC
758 }
759 while (f--) {
760 if (f == sock)
761 continue;
3125a5a4
NC
762 close(f);
763 }
764
2aa47728
NC
765 while (1) {
766 SV *target;
bf357333
NC
767 union control_un control;
768 struct msghdr msg;
769 struct iovec vec[1];
770 struct cmsghdr *cmptr;
771 ssize_t got;
772 int got_fd;
773
774 msg.msg_control = control.control;
775 msg.msg_controllen = sizeof(control.control);
776 /* We're a connected socket so we don't need a source */
777 msg.msg_name = NULL;
778 msg.msg_namelen = 0;
779 msg.msg_iov = vec;
c3caa5c3 780 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
781
782 vec[0].iov_base = (void*)&target;
783 vec[0].iov_len = sizeof(target);
784
785 got = recvmsg(sock, &msg, 0);
2aa47728
NC
786
787 if(got == 0)
788 break;
789 if(got < 0) {
808ad2d0
NC
790 where = "recv failed";
791 goto abort;
2aa47728
NC
792 }
793 if(got < sizeof(target)) {
808ad2d0
NC
794 where = "short recv";
795 goto abort;
2aa47728 796 }
bf357333 797
808ad2d0
NC
798 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
799 where = "no cmsg";
800 goto abort;
801 }
802 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
803 where = "wrong cmsg_len";
804 goto abort;
805 }
806 if(cmptr->cmsg_level != SOL_SOCKET) {
807 where = "wrong cmsg_level";
808 goto abort;
809 }
810 if(cmptr->cmsg_type != SCM_RIGHTS) {
811 where = "wrong cmsg_type";
812 goto abort;
813 }
bf357333
NC
814
815 got_fd = *(int*)CMSG_DATA(cmptr);
816 /* For our last little bit of trickery, put the file descriptor
817 back into Perl_debug_log, as if we never actually closed it
818 */
808ad2d0
NC
819 if(got_fd != debug_fd) {
820 if (dup2(got_fd, debug_fd) == -1) {
821 where = "dup2";
822 goto abort;
823 }
824 }
2aa47728 825 sv_dump(target);
bf357333 826
2aa47728
NC
827 PerlIO_flush(Perl_debug_log);
828
808ad2d0 829 got = write(sock, &success, sizeof(success));
2aa47728
NC
830
831 if(got < 0) {
808ad2d0
NC
832 where = "write failed";
833 goto abort;
2aa47728 834 }
808ad2d0
NC
835 if(got < sizeof(success)) {
836 where = "short write";
837 goto abort;
2aa47728
NC
838 }
839 }
840 _exit(0);
808ad2d0
NC
841 abort:
842 {
843 int send_errno = errno;
844 unsigned char length = (unsigned char) strlen(where);
845 struct iovec failure[3] = {
846 {(void*)&send_errno, sizeof(send_errno)},
847 {&length, 1},
848 {(void*)where, length}
849 };
850 int got = writev(sock, failure, 3);
851 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
852 in the parent if we try to read from the socketpair after the
853 child has exited, even if there was data to read.
854 So sleep a bit to give the parent a fighting chance of
855 reading the data. */
856 sleep(2);
857 _exit((got == -1) ? errno : 0);
858 }
bf357333 859 /* End of child. */
2aa47728 860 }
41e4abd8 861 PL_dumper_fd = fd[0];
2aa47728
NC
862 close(fd[1]);
863 }
864#endif
865
ff0cee69
PP
866 /* We must account for everything. */
867
868 /* Destroy the main CV and syntax tree */
37e77c23
FC
869 /* Set PL_curcop now, because destroying ops can cause new SVs
870 to be generated in Perl_pad_swipe, and when running with
871 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
872 op from which the filename structure member is copied. */
17fbfdf6 873 PL_curcop = &PL_compiling;
3280af22 874 if (PL_main_root) {
4e380990
DM
875 /* ensure comppad/curpad to refer to main's pad */
876 if (CvPADLIST(PL_main_cv)) {
877 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 878 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 879 }
3280af22 880 op_free(PL_main_root);
5f66b61c 881 PL_main_root = NULL;
a0d0e21e 882 }
5f66b61c 883 PL_main_start = NULL;
aac9d523
DM
884 /* note that PL_main_cv isn't usually actually freed at this point,
885 * due to the CvOUTSIDE refs from subs compiled within it. It will
886 * get freed once all the subs are freed in sv_clean_all(), for
887 * destruct_level > 0 */
3280af22 888 SvREFCNT_dec(PL_main_cv);
601f1833 889 PL_main_cv = NULL;
ca7b837b 890 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 891
13621cfb
NIS
892 /* Tell PerlIO we are about to tear things apart in case
893 we have layers which are using resources that should
894 be cleaned up now.
895 */
896
897 PerlIO_destruct(aTHX);
898
ddf23d4a
SM
899 /*
900 * Try to destruct global references. We do this first so that the
901 * destructors and destructees still exist. Some sv's might remain.
902 * Non-referenced objects are on their own.
903 */
904 sv_clean_objs();
8990e307 905
5cd24f17 906 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 907 SvREFCNT_dec(PL_warnhook);
a0714e2c 908 PL_warnhook = NULL;
3280af22 909 SvREFCNT_dec(PL_diehook);
a0714e2c 910 PL_diehook = NULL;
5cd24f17 911
4b556e6c 912 /* call exit list functions */
3280af22 913 while (PL_exitlistlen-- > 0)
acfe0abc 914 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 915
3280af22 916 Safefree(PL_exitlist);
4b556e6c 917
1c4916e5
CB
918 PL_exitlist = NULL;
919 PL_exitlistlen = 0;
920
a3e6e81e
NC
921 SvREFCNT_dec(PL_registered_mros);
922
551a8b83 923 /* jettison our possibly duplicated environment */
4b647fb0
DM
924 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
925 * so we certainly shouldn't free it here
926 */
2f42fcb0 927#ifndef PERL_MICRO
4b647fb0 928#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 929 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
930#ifdef USE_ITHREADS
931 /* only main thread can free environ[0] contents */
932 && PL_curinterp == aTHX
933#endif
934 )
935 {
551a8b83
JH
936 I32 i;
937
938 for (i = 0; environ[i]; i++)
4b420006 939 safesysfree(environ[i]);
0631ea03 940
4b420006
JH
941 /* Must use safesysfree() when working with environ. */
942 safesysfree(environ);
551a8b83
JH
943
944 environ = PL_origenviron;
945 }
946#endif
2f42fcb0 947#endif /* !PERL_MICRO */
551a8b83 948
30985c42
JH
949 if (destruct_level == 0) {
950
951 DEBUG_P(debprofdump());
952
953#if defined(PERLIO_LAYERS)
954 /* No more IO - including error messages ! */
955 PerlIO_cleanup(aTHX);
956#endif
957
958 CopFILE_free(&PL_compiling);
30985c42
JH
959
960 /* The exit() function will do everything that needs doing. */
961 return STATUS_EXIT;
962 }
963
9fa9f06b
KW
964 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
965
5f8cb046
DM
966#ifdef USE_ITHREADS
967 /* the syntax tree is shared between clones
968 * so op_free(PL_main_root) only ReREFCNT_dec's
969 * REGEXPs in the parent interpreter
970 * we need to manually ReREFCNT_dec for the clones
971 */
0547a729
DM
972 {
973 I32 i = AvFILLp(PL_regex_padav);
974 SV **ary = AvARRAY(PL_regex_padav);
975
976 for (; i; i--) {
977 SvREFCNT_dec(ary[i]);
978 ary[i] = &PL_sv_undef;
979 }
980 }
5f8cb046
DM
981#endif
982
0547a729 983
ad64d0ec 984 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
985 PL_stashcache = NULL;
986
5f05dabc
PP
987 /* loosen bonds of global variables */
988
2f9285f8
DM
989 /* XXX can PL_parser still be non-null here? */
990 if(PL_parser && PL_parser->rsfp) {
991 (void)PerlIO_close(PL_parser->rsfp);
992 PL_parser->rsfp = NULL;
8ebc5c01
PP
993 }
994
84386e14
RGS
995 if (PL_minus_F) {
996 Safefree(PL_splitstr);
997 PL_splitstr = NULL;
998 }
999
8ebc5c01 1000 /* switches */
3280af22
NIS
1001 PL_minus_n = FALSE;
1002 PL_minus_p = FALSE;
1003 PL_minus_l = FALSE;
1004 PL_minus_a = FALSE;
1005 PL_minus_F = FALSE;
1006 PL_doswitches = FALSE;
599cee73 1007 PL_dowarn = G_WARN_OFF;
1a904fc8 1008#ifdef PERL_SAWAMPERSAND
d3b97530 1009 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 1010#endif
3280af22
NIS
1011 PL_unsafe = FALSE;
1012
1013 Safefree(PL_inplace);
bd61b366 1014 PL_inplace = NULL;
a7cb1f99 1015 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
1016
1017 if (PL_e_script) {
1018 SvREFCNT_dec(PL_e_script);
a0714e2c 1019 PL_e_script = NULL;
8ebc5c01
PP
1020 }
1021
bf9cdc68
RG
1022 PL_perldb = 0;
1023
8ebc5c01
PP
1024 /* magical thingies */
1025
e23d9e2f
CS
1026 SvREFCNT_dec(PL_ofsgv); /* *, */
1027 PL_ofsgv = NULL;
5f05dabc 1028
7889fe52 1029 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 1030 PL_ors_sv = NULL;
8ebc5c01 1031
3280af22 1032 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 1033 PL_rs = NULL;
dc92893f 1034
d33b2eba 1035 Safefree(PL_osname); /* $^O */
bd61b366 1036 PL_osname = NULL;
5f05dabc 1037
3280af22 1038 SvREFCNT_dec(PL_statname);
a0714e2c
SS
1039 PL_statname = NULL;
1040 PL_statgv = NULL;
5f05dabc 1041
8ebc5c01
PP
1042 /* defgv, aka *_ should be taken care of elsewhere */
1043
7d5ea4e7
GS
1044 /* float buffer */
1045 Safefree(PL_efloatbuf);
bd61b366 1046 PL_efloatbuf = NULL;
7d5ea4e7
GS
1047 PL_efloatsize = 0;
1048
8ebc5c01 1049 /* startup and shutdown function lists */
3280af22 1050 SvREFCNT_dec(PL_beginav);
5a837c8f 1051 SvREFCNT_dec(PL_beginav_save);
3280af22 1052 SvREFCNT_dec(PL_endav);
7d30b5c4 1053 SvREFCNT_dec(PL_checkav);
ece599bd 1054 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
1055 SvREFCNT_dec(PL_unitcheckav);
1056 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1057 SvREFCNT_dec(PL_initav);
7d49f689
NC
1058 PL_beginav = NULL;
1059 PL_beginav_save = NULL;
1060 PL_endav = NULL;
1061 PL_checkav = NULL;
1062 PL_checkav_save = NULL;
3c10abe3
AG
1063 PL_unitcheckav = NULL;
1064 PL_unitcheckav_save = NULL;
7d49f689 1065 PL_initav = NULL;
5618dfe8 1066
8ebc5c01 1067 /* shortcuts just get cleared */
a0714e2c
SS
1068 PL_hintgv = NULL;
1069 PL_errgv = NULL;
a0714e2c
SS
1070 PL_argvoutgv = NULL;
1071 PL_stdingv = NULL;
1072 PL_stderrgv = NULL;
1073 PL_last_in_gv = NULL;
a0714e2c
SS
1074 PL_DBsingle = NULL;
1075 PL_DBtrace = NULL;
1076 PL_DBsignal = NULL;
a6d69523
TC
1077 PL_DBsingle_iv = 0;
1078 PL_DBtrace_iv = 0;
1079 PL_DBsignal_iv = 0;
601f1833 1080 PL_DBcv = NULL;
7d49f689 1081 PL_dbargs = NULL;
5c284bb0 1082 PL_debstash = NULL;
8ebc5c01 1083
cf93a474 1084 SvREFCNT_dec(PL_envgv);
f03015cd 1085 SvREFCNT_dec(PL_incgv);
722fa0e9 1086 SvREFCNT_dec(PL_argvgv);
475b1e90 1087 SvREFCNT_dec(PL_replgv);
8cece913
FC
1088 SvREFCNT_dec(PL_DBgv);
1089 SvREFCNT_dec(PL_DBline);
1090 SvREFCNT_dec(PL_DBsub);
cf93a474 1091 PL_envgv = NULL;
f03015cd 1092 PL_incgv = NULL;
722fa0e9 1093 PL_argvgv = NULL;
475b1e90 1094 PL_replgv = NULL;
8cece913
FC
1095 PL_DBgv = NULL;
1096 PL_DBline = NULL;
1097 PL_DBsub = NULL;
1098
7a1c5554 1099 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1100 PL_argvout_stack = NULL;
8ebc5c01 1101
5c831c24 1102 SvREFCNT_dec(PL_modglobal);
5c284bb0 1103 PL_modglobal = NULL;
5c831c24 1104 SvREFCNT_dec(PL_preambleav);
7d49f689 1105 PL_preambleav = NULL;
5c831c24 1106 SvREFCNT_dec(PL_subname);
a0714e2c 1107 PL_subname = NULL;
ca0c25f6 1108#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1109 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1110 PL_pidstatus = NULL;
ca0c25f6 1111#endif
5c831c24 1112 SvREFCNT_dec(PL_toptarget);
a0714e2c 1113 PL_toptarget = NULL;
5c831c24 1114 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1115 PL_bodytarget = NULL;
1116 PL_formtarget = NULL;
5c831c24 1117
d33b2eba 1118 /* free locale stuff */
b9582b6a 1119#ifdef USE_LOCALE_COLLATE
d33b2eba 1120 Safefree(PL_collation_name);
bd61b366 1121 PL_collation_name = NULL;
b9582b6a 1122#endif
d33b2eba 1123
b9582b6a 1124#ifdef USE_LOCALE_NUMERIC
d33b2eba 1125 Safefree(PL_numeric_name);
bd61b366 1126 PL_numeric_name = NULL;
a453c169 1127 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1128 PL_numeric_radix_sv = NULL;
b9582b6a 1129#endif
d33b2eba 1130
f7416781
KW
1131 if (PL_langinfo_buf) {
1132 Safefree(PL_langinfo_buf);
1133 PL_langinfo_buf = NULL;
1134 }
1135
9c0b6888
KW
1136 /* clear character classes */
1137 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1138 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1139 PL_utf8_swash_ptrs[i] = NULL;
1140 }
5c831c24
GS
1141 SvREFCNT_dec(PL_utf8_mark);
1142 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1143 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1144 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1145 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1146 SvREFCNT_dec(PL_utf8_idstart);
1147 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1148 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1149 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1150 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1151 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1152 SvREFCNT_dec(PL_UpperLatin1);
1153 SvREFCNT_dec(PL_Latin1);
1154 SvREFCNT_dec(PL_NonL1NonFinalFold);
1155 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1156#ifdef USE_LOCALE_CTYPE
780fcc9f 1157 SvREFCNT_dec(PL_warn_locale);
5b7de470 1158#endif
a0714e2c
SS
1159 PL_utf8_mark = NULL;
1160 PL_utf8_toupper = NULL;
1161 PL_utf8_totitle = NULL;
1162 PL_utf8_tolower = NULL;
1163 PL_utf8_tofold = NULL;
1164 PL_utf8_idstart = NULL;
1165 PL_utf8_idcont = NULL;
2726813d 1166 PL_utf8_foldclosures = NULL;
9fa9f06b 1167 PL_AboveLatin1 = NULL;
e0a1ff7a 1168 PL_InBitmap = NULL;
9fa9f06b 1169 PL_HasMultiCharFold = NULL;
5b7de470 1170#ifdef USE_LOCALE_CTYPE
780fcc9f 1171 PL_warn_locale = NULL;
5b7de470 1172#endif
9fa9f06b
KW
1173 PL_Latin1 = NULL;
1174 PL_NonL1NonFinalFold = NULL;
1175 PL_UpperLatin1 = NULL;
86f72d56 1176 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1177 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1178 PL_XPosix_ptrs[i] = NULL;
86f72d56 1179 }
64935bc6 1180 PL_GCB_invlist = NULL;
6b659339 1181 PL_LB_invlist = NULL;
06ae2722 1182 PL_SB_invlist = NULL;
ae3bb8ea 1183 PL_WB_invlist = NULL;
9e7ded3f 1184 PL_Assigned_invlist = NULL;
5c831c24 1185
971a9dd3 1186 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1187 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1188 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1189 cophh_free(CopHINTHASH_get(&PL_compiling));
1190 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1191 CopFILE_free(&PL_compiling);
5c831c24 1192
a0d0e21e 1193 /* Prepare to destruct main symbol table. */
5f05dabc 1194
3280af22 1195 hv = PL_defstash;
ca556bcd 1196 /* break ref loop *:: <=> %:: */
854da30f 1197 (void)hv_deletes(hv, "main::", G_DISCARD);
3280af22 1198 PL_defstash = 0;
a0d0e21e 1199 SvREFCNT_dec(hv);
5c831c24 1200 SvREFCNT_dec(PL_curstname);
a0714e2c 1201 PL_curstname = NULL;
a0d0e21e 1202
5a844595
GS
1203 /* clear queued errors */
1204 SvREFCNT_dec(PL_errors);
a0714e2c 1205 PL_errors = NULL;
5a844595 1206
dd69841b
BB
1207 SvREFCNT_dec(PL_isarev);
1208
a0d0e21e 1209 FREETMPS;
9b387841 1210 if (destruct_level >= 2) {
3280af22 1211 if (PL_scopestack_ix != 0)
9b387841
NC
1212 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1213 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1214 (long)PL_scopestack_ix);
3280af22 1215 if (PL_savestack_ix != 0)
9b387841
NC
1216 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1217 "Unbalanced saves: %ld more saves than restores\n",
1218 (long)PL_savestack_ix);
3280af22 1219 if (PL_tmps_floor != -1)
9b387841
NC
1220 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1221 (long)PL_tmps_floor + 1);
a0d0e21e 1222 if (cxstack_ix != -1)
9b387841
NC
1223 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1224 (long)cxstack_ix + 1);
a0d0e21e 1225 }
8990e307 1226
0547a729
DM
1227#ifdef USE_ITHREADS
1228 SvREFCNT_dec(PL_regex_padav);
1229 PL_regex_padav = NULL;
1230 PL_regex_pad = NULL;
1231#endif
1232
776df701 1233#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1234 /* the entries in this list are allocated via SV PVX's, so get freed
1235 * in sv_clean_all */
1236 Safefree(PL_my_cxt_list);
776df701 1237#endif
57bb2458 1238
8990e307 1239 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1240
1241 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1242 while (sv_clean_all() > 2)
5226ed68
JH
1243 ;
1244
23083432
FC
1245#ifdef USE_ITHREADS
1246 Safefree(PL_stashpad); /* must come after sv_clean_all */
1247#endif
1248
d4777f27
GS
1249 AvREAL_off(PL_fdpid); /* no surviving entries */
1250 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1251 PL_fdpid = NULL;
d33b2eba 1252
6c644e78
GS
1253#ifdef HAVE_INTERP_INTERN
1254 sys_intern_clear();
1255#endif
1256
a38ab475
RZ
1257 /* constant strings */
1258 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1259 SvREFCNT_dec(PL_sv_consts[i]);
1260 PL_sv_consts[i] = NULL;
1261 }
1262
6e72f9df
PP
1263 /* Destruct the global string table. */
1264 {
1265 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1266 * so that sv_free() won't fail on them.
80459961
NC
1267 * Now that the global string table is using a single hunk of memory
1268 * for both HE and HEK, we either need to explicitly unshare it the
1269 * correct way, or actually free things here.
6e72f9df 1270 */
80459961
NC
1271 I32 riter = 0;
1272 const I32 max = HvMAX(PL_strtab);
c4420975 1273 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1274 HE *hent = array[0];
1275
6e72f9df 1276 for (;;) {
0453d815 1277 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1278 HE * const next = HeNEXT(hent);
9014280d 1279 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1280 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1281 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1282 Safefree(hent);
1283 hent = next;
6e72f9df
PP
1284 }
1285 if (!hent) {
1286 if (++riter > max)
1287 break;
1288 hent = array[riter];
1289 }
1290 }
80459961
NC
1291
1292 Safefree(array);
1293 HvARRAY(PL_strtab) = 0;
1294 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1295 }
3280af22 1296 SvREFCNT_dec(PL_strtab);
6e72f9df 1297
e652bb2f 1298#ifdef USE_ITHREADS
c21d1a0f 1299 /* free the pointer tables used for cloning */
a0739874 1300 ptr_table_free(PL_ptr_table);
bf9cdc68 1301 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1302#endif
a0739874 1303
d33b2eba
GS
1304 /* free special SVs */
1305
1306 SvREFCNT(&PL_sv_yes) = 0;
1307 sv_clear(&PL_sv_yes);
1308 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1309 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1310
1311 SvREFCNT(&PL_sv_no) = 0;
1312 sv_clear(&PL_sv_no);
1313 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1314 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1315
5a6c2837
DM
1316 SvREFCNT(&PL_sv_zero) = 0;
1317 sv_clear(&PL_sv_zero);
1318 SvANY(&PL_sv_zero) = NULL;
1319 SvFLAGS(&PL_sv_zero) = 0;
1320
9f375a43
DM
1321 {
1322 int i;
1323 for (i=0; i<=2; i++) {
1324 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1325 sv_clear(PERL_DEBUG_PAD(i));
1326 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1327 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1328 }
1329 }
1330
0453d815 1331 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1332 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1333
eba0f806
DM
1334#ifdef DEBUG_LEAKING_SCALARS
1335 if (PL_sv_count != 0) {
1336 SV* sva;
1337 SV* sv;
eb578fdb 1338 SV* svend;
eba0f806 1339
ad64d0ec 1340 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1341 svend = &sva[SvREFCNT(sva)];
1342 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1343 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1344 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1345 " flags=0x%"UVxf
fd0854ff 1346 " refcnt=%"UVuf pTHX__FORMAT "\n"
147e3846
KW
1347 "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");"
1348 "serial %" UVuf "\n",
574b8821
NC
1349 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1350 pTHX__VALUE,
fd0854ff
DM
1351 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1352 sv->sv_debug_line,
1353 sv->sv_debug_inpad ? "for" : "by",
1354 sv->sv_debug_optype ?
1355 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1356 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1357 sv->sv_debug_serial
fd0854ff 1358 );
2aa47728 1359#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1360 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1361#endif
eba0f806
DM
1362 }
1363 }
1364 }
1365 }
2aa47728
NC
1366#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1367 {
1368 int status;
1369 fd_set rset;
1370 /* Wait for up to 4 seconds for child to terminate.
1371 This seems to be the least effort way of timing out on reaping
1372 its exit status. */
1373 struct timeval waitfor = {4, 0};
41e4abd8 1374 int sock = PL_dumper_fd;
2aa47728
NC
1375
1376 shutdown(sock, 1);
1377 FD_ZERO(&rset);
1378 FD_SET(sock, &rset);
1379 select(sock + 1, &rset, NULL, NULL, &waitfor);
1380 waitpid(child, &status, WNOHANG);
1381 close(sock);
1382 }
1383#endif
eba0f806 1384#endif
77abb4c6
NC
1385#ifdef DEBUG_LEAKING_SCALARS_ABORT
1386 if (PL_sv_count)
1387 abort();
1388#endif
bf9cdc68 1389 PL_sv_count = 0;
eba0f806 1390
56a2bab7 1391#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1392 /* No more IO - including error messages ! */
1393 PerlIO_cleanup(aTHX);
1394#endif
1395
9f4bd222 1396 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1397 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1398 for no arg - and will try and SvREFCNT_dec it.
1399 */
1400 SvREFCNT(&PL_sv_undef) = 0;
1401 SvREADONLY_off(&PL_sv_undef);
1402
3280af22 1403 Safefree(PL_origfilename);
bd61b366 1404 PL_origfilename = NULL;
43c5f42d 1405 Safefree(PL_reg_curpm);
dd28f7bb 1406 free_tied_hv_pool();
3280af22 1407 Safefree(PL_op_mask);
cf36064f 1408 Safefree(PL_psig_name);
bf9cdc68 1409 PL_psig_name = (SV**)NULL;
d525a7b2 1410 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1411 {
1412 /* We need to NULL PL_psig_pend first, so that
1413 signal handlers know not to use it */
1414 int *psig_save = PL_psig_pend;
1415 PL_psig_pend = (int*)NULL;
1416 Safefree(psig_save);
1417 }
6e72f9df 1418 nuke_stacks();
284167a5
SM
1419 TAINTING_set(FALSE);
1420 TAINT_WARN_set(FALSE);
3280af22 1421 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1422
a0d0e21e 1423 DEBUG_P(debprofdump());
d33b2eba 1424
b173165c
FC
1425 PL_debug = 0;
1426
e5dd39fc 1427#ifdef USE_REENTRANT_API
10bc17b6 1428 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1429#endif
1430
a24da70b
NC
1431 /* These all point to HVs that are about to be blown away.
1432 Code in core and on CPAN assumes that if the interpreter is re-started
1433 that they will be cleanly NULL or pointing to a valid HV. */
1434 PL_custom_op_names = NULL;
1435 PL_custom_op_descs = NULL;
1436 PL_custom_ops = NULL;
1437
612f20c3
GS
1438 sv_free_arenas();
1439
5d9a96ca
DM
1440 while (PL_regmatch_slab) {
1441 regmatch_slab *s = PL_regmatch_slab;
1442 PL_regmatch_slab = PL_regmatch_slab->next;
1443 Safefree(s);
1444 }
1445
fc36a67e
PP
1446 /* As the absolutely last thing, free the non-arena SV for mess() */
1447
3280af22 1448 if (PL_mess_sv) {
f350b448
NC
1449 /* we know that type == SVt_PVMG */
1450
9c63abab 1451 /* it could have accumulated taint magic */
f350b448
NC
1452 MAGIC* mg;
1453 MAGIC* moremagic;
1454 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1455 moremagic = mg->mg_moremagic;
1456 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1457 && mg->mg_len >= 0)
1458 Safefree(mg->mg_ptr);
1459 Safefree(mg);
9c63abab 1460 }
f350b448 1461
fc36a67e 1462 /* we know that type >= SVt_PV */
8bd4d4c5 1463 SvPV_free(PL_mess_sv);
3280af22
NIS
1464 Safefree(SvANY(PL_mess_sv));
1465 Safefree(PL_mess_sv);
a0714e2c 1466 PL_mess_sv = NULL;
fc36a67e 1467 }
37038d91 1468 return STATUS_EXIT;
79072805
LW
1469}
1470
954c1994
GS
1471/*
1472=for apidoc perl_free
1473
1474Releases a Perl interpreter. See L<perlembed>.
1475
1476=cut
1477*/
1478
79072805 1479void
0cb96387 1480perl_free(pTHXx)
79072805 1481{
5174512c
NC
1482 dVAR;
1483
7918f24d
NC
1484 PERL_ARGS_ASSERT_PERL_FREE;
1485
c301d606
DM
1486 if (PL_veto_cleanup)
1487 return;
1488
7cb608b5 1489#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1490 {
1491 /*
1492 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1493 * value as we're probably hunting memory leaks then
1494 */
36e77d41 1495 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1496 const U32 old_debug = PL_debug;
55ef9aae
MHM
1497 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1498 thread at thread exit. */
4fd0a9b8
NC
1499 if (DEBUG_m_TEST) {
1500 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1501 "free this thread's memory\n");
1502 PL_debug &= ~ DEBUG_m_FLAG;
1503 }
6edcbed6
DD
1504 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1505 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1506 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1507 safesysfree(ptr);
1508 }
4fd0a9b8 1509 PL_debug = old_debug;
55ef9aae
MHM
1510 }
1511 }
7cb608b5
NC
1512#endif
1513
acfe0abc 1514#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1515# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1516 {
acfe0abc 1517# ifdef NETWARE
7af12a34 1518 void *host = nw_internal_host;
7af12a34 1519 PerlMem_free(aTHXx);
7af12a34 1520 nw_delete_internal_host(host);
acfe0abc 1521# else
bdb50480
NC
1522 void *host = w32_internal_host;
1523 PerlMem_free(aTHXx);
7af12a34 1524 win32_delete_internal_host(host);
acfe0abc 1525# endif
7af12a34 1526 }
1c0ca838
GS
1527# else
1528 PerlMem_free(aTHXx);
1529# endif
acfe0abc
GS
1530#else
1531 PerlMem_free(aTHXx);
76e3520e 1532#endif
79072805
LW
1533}
1534
b7f7fff6 1535#if defined(USE_ITHREADS)
aebd1ac7
GA
1536/* provide destructors to clean up the thread key when libperl is unloaded */
1537#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1538
826955bd 1539#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1540#pragma fini "perl_fini"
666ad1ec
GA
1541#elif defined(__sun) && !defined(__GNUC__)
1542#pragma fini (perl_fini)
aebd1ac7
GA
1543#endif
1544
0dbb1585
AL
1545static void
1546#if defined(__GNUC__)
1547__attribute__((destructor))
aebd1ac7 1548#endif
de009b76 1549perl_fini(void)
aebd1ac7 1550{
27da23d5 1551 dVAR;
5c64bffd
NC
1552 if (
1553#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1554 my_vars &&
1555#endif
1556 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1557 FREE_THREAD_KEY;
1558}
1559
1560#endif /* WIN32 */
1561#endif /* THREADS */
1562
4b556e6c 1563void
864dbfa3 1564Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1565{
3280af22
NIS
1566 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1567 PL_exitlist[PL_exitlistlen].fn = fn;
1568 PL_exitlist[PL_exitlistlen].ptr = ptr;
1569 ++PL_exitlistlen;
4b556e6c
JD
1570}
1571
954c1994
GS
1572/*
1573=for apidoc perl_parse
1574
1575Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1576
1577=cut
1578*/
1579
03d9f026
FC
1580#define SET_CURSTASH(newstash) \
1581 if (PL_curstash != newstash) { \
1582 SvREFCNT_dec(PL_curstash); \
1583 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1584 }
1585
79072805 1586int
0cb96387 1587perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1588{
27da23d5 1589 dVAR;
6224f72b 1590 I32 oldscope;
6224f72b 1591 int ret;
db36c5a1 1592 dJMPENV;
8d063cd8 1593
7918f24d
NC
1594 PERL_ARGS_ASSERT_PERL_PARSE;
1595#ifndef MULTIPLICITY
ed6c66dd 1596 PERL_UNUSED_ARG(my_perl);
7918f24d 1597#endif
1a237f4f 1598#if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG)
b0891165 1599 {
7dc86639
YO
1600 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1601
22ff3130 1602 if (s && strEQ(s, "1")) {
25c1b134
TC
1603 const unsigned char *seed= PERL_HASH_SEED;
1604 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1605 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1606 while (seed < seed_end) {
1607 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1608 }
6a5b4183
YO
1609#ifdef PERL_HASH_RANDOMIZE_KEYS
1610 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1611 PL_HASH_RAND_BITS_ENABLED,
1612 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1613#endif
7dc86639
YO
1614 PerlIO_printf(Perl_debug_log, "\n");
1615 }
b0891165 1616 }
1a237f4f 1617#endif /* #if (defined(USE_HASH_SEED) ... */
43238333 1618
ea34f6bd 1619#ifdef __amigaos4__
43238333
AB
1620 {
1621 struct NameTranslationInfo nti;
1622 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1623 }
1624#endif
1625
3280af22 1626 PL_origargc = argc;
e2975953 1627 PL_origargv = argv;
a0d0e21e 1628
a2722ac9
GA
1629 if (PL_origalen != 0) {
1630 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1631 }
1632 else {
3cb9023d
JH
1633 /* Set PL_origalen be the sum of the contiguous argv[]
1634 * elements plus the size of the env in case that it is
e9137a8e 1635 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1636 * as the maximum modifiable length of $0. In the worst case
1637 * the area we are able to modify is limited to the size of
43c32782 1638 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1639 * --jhi */
e1ec3a88 1640 const char *s = NULL;
b7249aaf 1641 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1642 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1643 const UV aligned =
43c32782
JH
1644 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1645
1646 /* See if all the arguments are contiguous in memory. Note
1647 * that 'contiguous' is a loose term because some platforms
1648 * align the argv[] and the envp[]. If the arguments look
1649 * like non-aligned, assume that they are 'strictly' or
1650 * 'traditionally' contiguous. If the arguments look like
1651 * aligned, we just check that they are within aligned
1652 * PTRSIZE bytes. As long as no system has something bizarre
1653 * like the argv[] interleaved with some other data, we are
1654 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb 1655 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
19742f39 1656 int i;
c8941eeb
JH
1657 while (*s) s++;
1658 for (i = 1; i < PL_origargc; i++) {
1659 if ((PL_origargv[i] == s + 1
43c32782 1660#ifdef OS2
c8941eeb 1661 || PL_origargv[i] == s + 2
43c32782 1662#endif
c8941eeb
JH
1663 )
1664 ||
1665 (aligned &&
1666 (PL_origargv[i] > s &&
1667 PL_origargv[i] <=
1668 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1669 )
1670 {
1671 s = PL_origargv[i];
1672 while (*s) s++;
1673 }
1674 else
1675 break;
54bfe034 1676 }
54bfe034 1677 }
a4a109c2
JD
1678
1679#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1680 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1681 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1682 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1683 ||
1684 (aligned &&
1685 (PL_origenviron[0] > s &&
1686 PL_origenviron[0] <=
1687 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1688 )
1689 {
19742f39 1690 int i;
9d419b5f 1691#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1692 s = PL_origenviron[0];
1693 while (*s) s++;
1694#endif
bd61b366 1695 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1696 /* Force copy of environment. */
1697 for (i = 1; PL_origenviron[i]; i++) {
1698 if (PL_origenviron[i] == s + 1
1699 ||
1700 (aligned &&
1701 (PL_origenviron[i] > s &&
1702 PL_origenviron[i] <=
1703 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1704 )
1705 {
1706 s = PL_origenviron[i];
1707 while (*s) s++;
1708 }
1709 else
1710 break;
54bfe034 1711 }
43c32782 1712 }
54bfe034 1713 }
a4a109c2
JD
1714#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1715
2d2af554 1716 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1717 }
1718
3280af22 1719 if (PL_do_undump) {
a0d0e21e
LW
1720
1721 /* Come here if running an undumped a.out. */
1722
3280af22
NIS
1723 PL_origfilename = savepv(argv[0]);
1724 PL_do_undump = FALSE;
a0d0e21e 1725 cxstack_ix = -1; /* start label stack again */
748a9306 1726 init_ids();
284167a5 1727 assert (!TAINT_get);
b7975bdd 1728 TAINT;
e2051532 1729 set_caret_X();
b7975bdd 1730 TAINT_NOT;
a0d0e21e
LW
1731 init_postdump_symbols(argc,argv,env);
1732 return 0;
1733 }
1734
3280af22 1735 if (PL_main_root) {
3280af22 1736 op_free(PL_main_root);
5f66b61c 1737 PL_main_root = NULL;
ff0cee69 1738 }
5f66b61c 1739 PL_main_start = NULL;
3280af22 1740 SvREFCNT_dec(PL_main_cv);
601f1833 1741 PL_main_cv = NULL;
79072805 1742
3280af22
NIS
1743 time(&PL_basetime);
1744 oldscope = PL_scopestack_ix;
599cee73 1745 PL_dowarn = G_WARN_OFF;
f86702cc 1746
14dd3ad8 1747 JMPENV_PUSH(ret);
6224f72b 1748 switch (ret) {
312caa8e 1749 case 0:
14dd3ad8 1750 parse_body(env,xsinit);
9ebf26ad 1751 if (PL_unitcheckav) {
3c10abe3 1752 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1753 }
1754 if (PL_checkav) {
ca7b837b 1755 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1756 call_list(oldscope, PL_checkav);
9ebf26ad 1757 }
14dd3ad8
GS
1758 ret = 0;
1759 break;
6224f72b
GS
1760 case 1:
1761 STATUS_ALL_FAILURE;
924ba076 1762 /* FALLTHROUGH */
6224f72b
GS
1763 case 2:
1764 /* my_exit() was called */
3280af22 1765 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1766 LEAVE;
1767 FREETMPS;
03d9f026 1768 SET_CURSTASH(PL_defstash);
9ebf26ad 1769 if (PL_unitcheckav) {
3c10abe3 1770 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1771 }
1772 if (PL_checkav) {
ca7b837b 1773 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1774 call_list(oldscope, PL_checkav);
9ebf26ad 1775 }
37038d91 1776 ret = STATUS_EXIT;
14dd3ad8 1777 break;
6224f72b 1778 case 3:
bf49b057 1779 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1780 ret = 1;
1781 break;
6224f72b 1782 }
14dd3ad8
GS
1783 JMPENV_POP;
1784 return ret;
1785}
1786
4a5df386
NC
1787/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1788 miniperl, and we need to see those flags reflected in the values here. */
1789
1790/* What this returns is subject to change. Use the public interface in Config.
1791 */
1792static void
1793S_Internals_V(pTHX_ CV *cv)
1794{
1795 dXSARGS;
1796#ifdef LOCAL_PATCH_COUNT
1797 const int local_patch_count = LOCAL_PATCH_COUNT;
1798#else
1799 const int local_patch_count = 0;
1800#endif
2dc296d2 1801 const int entries = 3 + local_patch_count;
4a5df386 1802 int i;
fe1c5936 1803 static const char non_bincompat_options[] =
4a5df386
NC
1804# ifdef DEBUGGING
1805 " DEBUGGING"
1806# endif
1807# ifdef NO_MATHOMS
0d311fbe 1808 " NO_MATHOMS"
4a5df386 1809# endif
59b86f4b
DM
1810# ifdef NO_HASH_SEED
1811 " NO_HASH_SEED"
1812# endif
3b0e4ee2
MB
1813# ifdef NO_TAINT_SUPPORT
1814 " NO_TAINT_SUPPORT"
1815# endif
cb26ef7a
MB
1816# ifdef PERL_BOOL_AS_CHAR
1817 " PERL_BOOL_AS_CHAR"
1818# endif
93c10d60
FC
1819# ifdef PERL_COPY_ON_WRITE
1820 " PERL_COPY_ON_WRITE"
1821# endif
4a5df386
NC
1822# ifdef PERL_DISABLE_PMC
1823 " PERL_DISABLE_PMC"
1824# endif
1825# ifdef PERL_DONT_CREATE_GVSV
1826 " PERL_DONT_CREATE_GVSV"
1827# endif
9a044a43
NC
1828# ifdef PERL_EXTERNAL_GLOB
1829 " PERL_EXTERNAL_GLOB"
1830# endif
59b86f4b
DM
1831# ifdef PERL_HASH_FUNC_SIPHASH
1832 " PERL_HASH_FUNC_SIPHASH"
1833# endif
1834# ifdef PERL_HASH_FUNC_SDBM
1835 " PERL_HASH_FUNC_SDBM"
1836# endif
1837# ifdef PERL_HASH_FUNC_DJB2
1838 " PERL_HASH_FUNC_DJB2"
1839# endif
1840# ifdef PERL_HASH_FUNC_SUPERFAST
1841 " PERL_HASH_FUNC_SUPERFAST"
1842# endif
1843# ifdef PERL_HASH_FUNC_MURMUR3
1844 " PERL_HASH_FUNC_MURMUR3"
1845# endif
1846# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1847 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1848# endif
1849# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1850 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1851# endif
1852# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1853 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1854# endif
4a5df386
NC
1855# ifdef PERL_IS_MINIPERL
1856 " PERL_IS_MINIPERL"
1857# endif
1858# ifdef PERL_MALLOC_WRAP
1859 " PERL_MALLOC_WRAP"
1860# endif
1861# ifdef PERL_MEM_LOG
1862 " PERL_MEM_LOG"
1863# endif
1864# ifdef PERL_MEM_LOG_NOIMPL
1865 " PERL_MEM_LOG_NOIMPL"
1866# endif
4e499636
DM
1867# ifdef PERL_OP_PARENT
1868 " PERL_OP_PARENT"
1869# endif
59b86f4b
DM
1870# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1871 " PERL_PERTURB_KEYS_DETERMINISTIC"
1872# endif
1873# ifdef PERL_PERTURB_KEYS_DISABLED
1874 " PERL_PERTURB_KEYS_DISABLED"
1875# endif
1876# ifdef PERL_PERTURB_KEYS_RANDOM
1877 " PERL_PERTURB_KEYS_RANDOM"
1878# endif
c3cf41ec
NC
1879# ifdef PERL_PRESERVE_IVUV
1880 " PERL_PRESERVE_IVUV"
1881# endif
c051e30b
NC
1882# ifdef PERL_RELOCATABLE_INCPUSH
1883 " PERL_RELOCATABLE_INCPUSH"
1884# endif
4a5df386
NC
1885# ifdef PERL_USE_DEVEL
1886 " PERL_USE_DEVEL"
1887# endif
1888# ifdef PERL_USE_SAFE_PUTENV
1889 " PERL_USE_SAFE_PUTENV"
1890# endif
102b7877
YO
1891# ifdef SILENT_NO_TAINT_SUPPORT
1892 " SILENT_NO_TAINT_SUPPORT"
1893# endif
a3749cf3
NC
1894# ifdef UNLINK_ALL_VERSIONS
1895 " UNLINK_ALL_VERSIONS"
1896# endif
de618ee4
NC
1897# ifdef USE_ATTRIBUTES_FOR_PERLIO
1898 " USE_ATTRIBUTES_FOR_PERLIO"
1899# endif
4a5df386
NC
1900# ifdef USE_FAST_STDIO
1901 " USE_FAST_STDIO"
1902# endif
98548bdf
NC
1903# ifdef USE_LOCALE
1904 " USE_LOCALE"
1905# endif
98548bdf
NC
1906# ifdef USE_LOCALE_CTYPE
1907 " USE_LOCALE_CTYPE"
1908# endif
6937817d
DD
1909# ifdef WIN32_NO_REGISTRY
1910 " USE_NO_REGISTRY"
1911# endif
5a8d8935
NC
1912# ifdef USE_PERL_ATOF
1913 " USE_PERL_ATOF"
1914# endif
0d311fbe
NC
1915# ifdef USE_SITECUSTOMIZE
1916 " USE_SITECUSTOMIZE"
1917# endif
4a5df386
NC
1918 ;
1919 PERL_UNUSED_ARG(cv);
d3db1514 1920 PERL_UNUSED_VAR(items);
4a5df386
NC
1921
1922 EXTEND(SP, entries);
1923
1924 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1925 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1926 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1927
6baa8dbd
NT
1928#ifndef PERL_BUILD_DATE
1929# ifdef __DATE__
1930# ifdef __TIME__
1931# define PERL_BUILD_DATE __DATE__ " " __TIME__
1932# else
1933# define PERL_BUILD_DATE __DATE__
1934# endif
1935# endif
1936#endif
1937
1938#ifdef PERL_BUILD_DATE
4a5df386 1939 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1940 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1941 SVs_TEMP));
4a5df386
NC
1942#else
1943 PUSHs(&PL_sv_undef);
1944#endif
1945
4a5df386
NC
1946 for (i = 1; i <= local_patch_count; i++) {
1947 /* This will be an undef, if PL_localpatches[i] is NULL. */
1948 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1949 }
1950
1951 XSRETURN(entries);
1952}
1953
be71fc8f
NC
1954#define INCPUSH_UNSHIFT 0x01
1955#define INCPUSH_ADD_OLD_VERS 0x02
1956#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1957#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1958#define INCPUSH_NOT_BASEDIR 0x10
1959#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1960#define INCPUSH_ADD_SUB_DIRS \
1961 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1962
312caa8e 1963STATIC void *
14dd3ad8 1964S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1965{
27da23d5 1966 dVAR;
2f9285f8 1967 PerlIO *rsfp;
312caa8e 1968 int argc = PL_origargc;
8f42b153 1969 char **argv = PL_origargv;
e1ec3a88 1970 const char *scriptname = NULL;
402582ca 1971 bool dosearch = FALSE;
eb578fdb 1972 char c;
737c24fc 1973 bool doextract = FALSE;
bd61b366 1974 const char *cddir = NULL;
ab019eaa 1975#ifdef USE_SITECUSTOMIZE
20ef40cf 1976 bool minus_f = FALSE;
ab019eaa 1977#endif
95670bde 1978 SV *linestr_sv = NULL;
5486870f 1979 bool add_read_e_script = FALSE;
87606032 1980 U32 lex_start_flags = 0;
009d90df 1981
ca7b837b 1982 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1983
6224f72b 1984 init_main_stash();
54310121 1985
c7030b81
NC
1986 {
1987 const char *s;
6224f72b
GS
1988 for (argc--,argv++; argc > 0; argc--,argv++) {
1989 if (argv[0][0] != '-' || !argv[0][1])
1990 break;
6224f72b
GS
1991 s = argv[0]+1;
1992 reswitch:
47f56822 1993 switch ((c = *s)) {
729a02f2 1994 case 'C':
1d5472a9
GS
1995#ifndef PERL_STRICT_CR
1996 case '\r':
1997#endif
6224f72b
GS
1998 case ' ':
1999 case '0':
2000 case 'F':
2001 case 'a':
2002 case 'c':
2003 case 'd':
2004 case 'D':
2005 case 'h':
2006 case 'i':
2007 case 'l':
2008 case 'M':
2009 case 'm':
2010 case 'n':
2011 case 'p':
2012 case 's':
2013 case 'u':
2014 case 'U':
2015 case 'v':
599cee73
PM
2016 case 'W':
2017 case 'X':
6224f72b 2018 case 'w':
97bd5664 2019 if ((s = moreswitches(s)))
6224f72b
GS
2020 goto reswitch;
2021 break;
33b78306 2022
1dbad523 2023 case 't':
dc6d7f5c 2024#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2025 /* silently ignore */
dc6d7f5c 2026#elif defined(NO_TAINT_SUPPORT)
3231f579 2027 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2028 "Cowardly refusing to run with -t or -T flags");
2029#else
22f7c9c9 2030 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
2031 if( !TAINTING_get ) {
2032 TAINT_WARN_set(TRUE);
2033 TAINTING_set(TRUE);
317ea90d 2034 }
284167a5 2035#endif
317ea90d
MS
2036 s++;
2037 goto reswitch;
6224f72b 2038 case 'T':
dc6d7f5c 2039#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2040 /* silently ignore */
dc6d7f5c 2041#elif defined(NO_TAINT_SUPPORT)
3231f579 2042 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2043 "Cowardly refusing to run with -t or -T flags");
2044#else
22f7c9c9 2045 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2046 TAINTING_set(TRUE);
2047 TAINT_WARN_set(FALSE);
2048#endif
6224f72b
GS
2049 s++;
2050 goto reswitch;
f86702cc 2051
bc9b29db
RH
2052 case 'E':
2053 PL_minus_E = TRUE;
924ba076 2054 /* FALLTHROUGH */
6224f72b 2055 case 'e':
f20b2998 2056 forbid_setid('e', FALSE);
3280af22 2057 if (!PL_e_script) {
396482e1 2058 PL_e_script = newSVpvs("");
5486870f 2059 add_read_e_script = TRUE;
6224f72b
GS
2060 }
2061 if (*++s)
3280af22 2062 sv_catpv(PL_e_script, s);
6224f72b 2063 else if (argv[1]) {
3280af22 2064 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
2065 argc--,argv++;
2066 }
2067 else
47f56822 2068 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2069 sv_catpvs(PL_e_script, "\n");
6224f72b 2070 break;
afe37c7d 2071
20ef40cf 2072 case 'f':
f5542d3a 2073#ifdef USE_SITECUSTOMIZE
20ef40cf 2074 minus_f = TRUE;
f5542d3a 2075#endif
20ef40cf
GA
2076 s++;
2077 goto reswitch;
2078
6224f72b 2079 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2080 forbid_setid('I', FALSE);
bd61b366 2081 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
2082 argc--,argv++;
2083 }
6224f72b 2084 if (s && *s) {
0df16ed7 2085 STRLEN len = strlen(s);
55b4bc1c 2086 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
2087 }
2088 else
a67e862a 2089 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2090 break;
6224f72b 2091 case 'S':
f20b2998 2092 forbid_setid('S', FALSE);
6224f72b
GS
2093 dosearch = TRUE;
2094 s++;
2095 goto reswitch;
2096 case 'V':
7edfd0ef
NC
2097 {
2098 SV *opts_prog;
2099
7edfd0ef 2100 if (*++s != ':') {
37ca4a5b 2101 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2102 }
2103 else {
2104 ++s;
2105 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2106 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2107 0, s, 0);
2108 s += strlen(s);
2109 }
37ca4a5b 2110 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2111 /* don't look for script or read stdin */
2112 scriptname = BIT_BUCKET;
2113 goto reswitch;
6224f72b 2114 }
6224f72b 2115 case 'x':
737c24fc 2116 doextract = TRUE;
6224f72b 2117 s++;
304334da 2118 if (*s)
f4c556ac 2119 cddir = s;
6224f72b
GS
2120 break;
2121 case 0:
2122 break;
2123 case '-':
2124 if (!*++s || isSPACE(*s)) {
2125 argc--,argv++;
2126 goto switch_end;
2127 }
ee8bc8b7
NC
2128 /* catch use of gnu style long options.
2129 Both of these exit immediately. */
2130 if (strEQ(s, "version"))
2131 minus_v();
2132 if (strEQ(s, "help"))
2133 usage();
6224f72b 2134 s--;
924ba076 2135 /* FALLTHROUGH */
6224f72b 2136 default:
cea2e8a9 2137 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2138 }
2139 }
c7030b81
NC
2140 }
2141
6224f72b 2142 switch_end:
54310121 2143
c7030b81
NC
2144 {
2145 char *s;
2146
f675dbe5
CB
2147 if (
2148#ifndef SECURE_INTERNAL_GETENV
284167a5 2149 !TAINTING_get &&
f675dbe5 2150#endif
cf756827 2151 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2152 {
9e0b0d62
KW
2153 /* s points to static memory in getenv(), which may be overwritten at
2154 * any time; use a mortal copy instead */
2155 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2156
74288ac8
GS
2157 while (isSPACE(*s))
2158 s++;
317ea90d 2159 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2160#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2161 /* silently ignore */
dc6d7f5c 2162#elif defined(NO_TAINT_SUPPORT)
3231f579 2163 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2164 "Cowardly refusing to run with -t or -T flags");
2165#else
22f7c9c9 2166 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2167 TAINTING_set(TRUE);
2168 TAINT_WARN_set(FALSE);
2169#endif
317ea90d 2170 }
74288ac8 2171 else {
bd61b366 2172 char *popt_copy = NULL;
74288ac8 2173 while (s && *s) {
54913509 2174 const char *d;
74288ac8
GS
2175 while (isSPACE(*s))
2176 s++;
2177 if (*s == '-') {
2178 s++;
2179 if (isSPACE(*s))
2180 continue;
2181 }
4ea8f8fb 2182 d = s;
74288ac8
GS
2183 if (!*s)
2184 break;
2b622f1a 2185 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2186 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2187 while (++s && *s) {
2188 if (isSPACE(*s)) {
cf756827 2189 if (!popt_copy) {
bfa6c418
NC
2190 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2191 s = popt_copy + (s - d);
2192 d = popt_copy;
cf756827 2193 }
4ea8f8fb
MS
2194 *s++ = '\0';
2195 break;
2196 }
2197 }
1c4db469 2198 if (*d == 't') {
dc6d7f5c 2199#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2200 /* silently ignore */
dc6d7f5c 2201#elif defined(NO_TAINT_SUPPORT)
3231f579 2202 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2203 "Cowardly refusing to run with -t or -T flags");
2204#else
2205 if( !TAINTING_get) {
2206 TAINT_WARN_set(TRUE);
2207 TAINTING_set(TRUE);
317ea90d 2208 }
284167a5 2209#endif
1c4db469 2210 } else {
97bd5664 2211 moreswitches(d);
1c4db469 2212 }
6224f72b 2213 }
6224f72b
GS
2214 }
2215 }
c7030b81 2216 }
a0d0e21e 2217
d6295071
TC
2218#ifndef NO_PERL_INTERNAL_RAND_SEED
2219 /* If we're not set[ug]id, we might have honored
2220 PERL_INTERNAL_RAND_SEED in perl_construct().
2221 At this point command-line options have been parsed, so if
2222 we're now tainting and not set[ug]id re-seed.
2223 This could possibly be wasteful if PERL_INTERNAL_RAND_SEED is invalid,
2224 but avoids duplicating the logic from perl_construct().
2225 */
2226 if (PL_tainting &&
2227 PerlProc_getuid() == PerlProc_geteuid() &&
2228 PerlProc_getgid() == PerlProc_getegid()) {
2229 Perl_drand48_init_r(&PL_internal_random_state, seed());
2230 }
2231#endif
2232
c29067d7
CH
2233 /* Set $^X early so that it can be used for relocatable paths in @INC */
2234 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2235 assert (!TAINT_get);
c29067d7 2236 TAINT;
e2051532 2237 set_caret_X();
c29067d7
CH
2238 TAINT_NOT;
2239
43c0c913 2240#if defined(USE_SITECUSTOMIZE)
20ef40cf 2241 if (!minus_f) {
43c0c913 2242 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2243 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2244 ie a q() operator with a NUL byte as a the delimiter. This avoids
2245 problems with pathnames containing (say) ' */
43c0c913
NC
2246# ifdef PERL_IS_MINIPERL
2247 AV *const inc = GvAV(PL_incgv);
2248 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2249
2250 if (inc0) {
15870c5c
NC
2251 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2252 it should be reported immediately as a build failure. */
43c0c913
NC
2253 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2254 Perl_newSVpvf(aTHX_
147e3846 2255 "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; "
af26e4f2
FC
2256 "do {local $!; -f $f }"
2257 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2258 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2259 }
2260# else
2261 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2262 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2263 if (raw_sitelib) {
2264 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2265 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2266 INCPUSH_CAN_RELOCATE);
2267 const char *const sitelib = SvPVX(sitelib_sv);
2268 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2269 Perl_newSVpvf(aTHX_
2270 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2271 0, SVfARG(sitelib), 0,
2272 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2273 assert (SvREFCNT(sitelib_sv) == 1);
2274 SvREFCNT_dec(sitelib_sv);
2275 }
43c0c913 2276# endif
20ef40cf
GA
2277 }
2278#endif
2279
6224f72b
GS
2280 if (!scriptname)
2281 scriptname = argv[0];
3280af22 2282 if (PL_e_script) {
6224f72b
GS
2283 argc++,argv--;
2284 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2285 }
bd61b366 2286 else if (scriptname == NULL) {
6224f72b
GS
2287#ifdef MSDOS
2288 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2289 moreswitches("h");
6224f72b
GS
2290#endif
2291 scriptname = "-";
2292 }
2293
284167a5 2294 assert (!TAINT_get);
2cace6ac 2295 init_perllib();
6224f72b 2296
a52eba0e 2297 {
f20b2998 2298 bool suidscript = FALSE;
829372d3 2299
8d113837 2300 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2301 if (!rsfp) {
2302 rsfp = PerlIO_stdin();
87606032 2303 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2304 }
6224f72b 2305
b24bc095 2306 validate_suid(rsfp);
6224f72b 2307
64ca3a65 2308#ifndef PERL_MICRO
a52eba0e
NC
2309# if defined(SIGCHLD) || defined(SIGCLD)
2310 {
2311# ifndef SIGCHLD
2312# define SIGCHLD SIGCLD
2313# endif
2314 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2315 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2316 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2317 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2318 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2319 }
0b5b802d 2320 }
a52eba0e 2321# endif
64ca3a65 2322#endif
0b5b802d 2323
737c24fc 2324 if (doextract) {
faef540c 2325
f20b2998 2326 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2327 setuid scripts. */
2328 forbid_setid('x', suidscript);
f20b2998 2329 /* Hence you can't get here if suidscript is true */
faef540c 2330
95670bde
NC
2331 linestr_sv = newSV_type(SVt_PV);
2332 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2333 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2334 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2335 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2336 }
f4c556ac 2337 }
6224f72b 2338
ea726b52 2339 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2340 CvUNIQUE_on(PL_compcv);
2341
eacbb379 2342 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2343
dd69841b
BB
2344 PL_isarev = newHV();
2345
0c4f7ff0 2346 boot_core_PerlIO();
6224f72b 2347 boot_core_UNIVERSAL();
e1a479c5 2348 boot_core_mro();
4a5df386 2349 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2350
2351 if (xsinit)
acfe0abc 2352 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2353#ifndef PERL_MICRO
739a0b84 2354#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2355 init_os_extras();
6224f72b 2356#endif
64ca3a65 2357#endif
6224f72b 2358
29209bc5 2359#ifdef USE_SOCKS
1b9c9cf5
DH
2360# ifdef HAS_SOCKS5_INIT
2361 socks5_init(argv[0]);
2362# else
29209bc5 2363 SOCKSinit(argv[0]);
1b9c9cf5 2364# endif
ac27b0f5 2365#endif
29209bc5 2366
6224f72b
GS
2367 init_predump_symbols();
2368 /* init_postdump_symbols not currently designed to be called */
2369 /* more than once (ENV isn't cleared first, for example) */
2370 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2371 if (!PL_do_undump)
6224f72b
GS
2372 init_postdump_symbols(argc,argv,env);
2373
27da23d5
JH
2374 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2375 * or explicitly in some platforms.
73e1bd1a 2376 * PL_utf8locale is conditionally turned on by
085a54d9 2377 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2378 * look like the user wants to use UTF-8. */
a0fd4948 2379#if defined(__SYMBIAN32__)
27da23d5
JH
2380 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2381#endif
e27b5b51 2382# ifndef PERL_IS_MINIPERL
06e66572
JH
2383 if (PL_unicode) {
2384 /* Requires init_predump_symbols(). */
a05d7ebb 2385 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2386 IO* io;
2387 PerlIO* fp;
2388 SV* sv;
2389
a05d7ebb 2390 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2391 * and the default open disciplines. */
a05d7ebb
JH
2392 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2393 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2394 (fp = IoIFP(io)))
2395 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2396 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2397 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2398 (fp = IoOFP(io)))
2399 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2400 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2401 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2402 (fp = IoOFP(io)))
2403 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2404 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2405 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2406 SVt_PV)))) {
a05d7ebb
JH
2407 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2408 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2409 if (in) {
2410 if (out)
76f68e9b 2411 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2412 else
76f68e9b 2413 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2414 }
2415 else if (out)
76f68e9b 2416 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2417 SvSETMAGIC(sv);
2418 }
b310b053
JH
2419 }
2420 }
e27b5b51 2421#endif
b310b053 2422
c7030b81
NC
2423 {
2424 const char *s;
4ffa73a3
JH
2425 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2426 if (strEQ(s, "unsafe"))
2427 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2428 else if (strEQ(s, "safe"))
2429 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2430 else
2431 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2432 }
c7030b81 2433 }
4ffa73a3 2434
81d86705 2435
87606032 2436 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2437 SvREFCNT_dec(linestr_sv);
95670bde 2438
219f7226 2439 PL_subname = newSVpvs("main");
6224f72b 2440
5486870f
DM
2441 if (add_read_e_script)
2442 filter_add(read_e_script, NULL);
2443
6224f72b
GS
2444 /* now parse the script */
2445
93189314 2446 SETERRNO(0,SS_NORMAL);
28ac2b49 2447 if (yyparse(GRAMPROG) || PL_parser->error_count) {
c77da5ff 2448 abort_execution("", PL_origfilename);
6224f72b 2449 }
57843af0 2450 CopLINE_set(PL_curcop, 0);
03d9f026 2451 SET_CURSTASH(PL_defstash);
3280af22
NIS
2452 if (PL_e_script) {
2453 SvREFCNT_dec(PL_e_script);
a0714e2c 2454 PL_e_script = NULL;
6224f72b
GS
2455 }
2456
3280af22 2457 if (PL_do_undump)
6224f72b
GS
2458 my_unexec();
2459
57843af0
GS
2460 if (isWARN_ONCE) {
2461 SAVECOPFILE(PL_curcop);
2462 SAVECOPLINE(PL_curcop);
3280af22 2463 gv_check(PL_defstash);
57843af0 2464 }
6224f72b
GS
2465
2466 LEAVE;
2467 FREETMPS;
2468
2469#ifdef MYMALLOC
f6a607bc
RGS
2470 {
2471 const char *s;
22ff3130
HS
2472 UV uv;
2473 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2474 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2475 dump_mstats("after compilation:");
f6a607bc 2476 }
6224f72b
GS
2477#endif
2478
2479 ENTER;
febb3a6d 2480 PL_restartjmpenv = NULL;
3280af22 2481 PL_restartop = 0;
312caa8e 2482 return NULL;
6224f72b
GS
2483}
2484
954c1994
GS
2485/*
2486=for apidoc perl_run
2487
2488Tells a Perl interpreter to run. See L<perlembed>.
2489
2490=cut
2491*/
2492
6224f72b 2493int
0cb96387 2494perl_run(pTHXx)
6224f72b 2495{
6224f72b 2496 I32 oldscope;
14dd3ad8 2497 int ret = 0;
db36c5a1 2498 dJMPENV;
6224f72b 2499
7918f24d
NC
2500 PERL_ARGS_ASSERT_PERL_RUN;
2501#ifndef MULTIPLICITY
ed6c66dd 2502 PERL_UNUSED_ARG(my_perl);
7918f24d 2503#endif
9d4ba2ae 2504
3280af22 2505 oldscope = PL_scopestack_ix;
96e176bf
CL
2506#ifdef VMS
2507 VMSISH_HUSHED = 0;
2508#endif
6224f72b 2509
14dd3ad8 2510 JMPENV_PUSH(ret);
6224f72b
GS
2511 switch (ret) {
2512 case 1:
2513 cxstack_ix = -1; /* start context stack again */
312caa8e 2514 goto redo_body;
14dd3ad8 2515 case 0: /* normal completion */
14dd3ad8
GS
2516 redo_body:
2517 run_body(oldscope);
924ba076 2518 /* FALLTHROUGH */
14dd3ad8 2519 case 2: /* my_exit() */
3280af22 2520 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2521 LEAVE;
2522 FREETMPS;
03d9f026 2523 SET_CURSTASH(PL_defstash);
3a1ee7e8 2524 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2525 PL_endav && !PL_minus_c) {
ca7b837b 2526 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2527 call_list(oldscope, PL_endav);
9ebf26ad 2528 }
6224f72b
GS
2529#ifdef MYMALLOC
2530 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2531 dump_mstats("after execution: ");
2532#endif
37038d91 2533 ret = STATUS_EXIT;
14dd3ad8 2534 break;
6224f72b 2535 case 3:
312caa8e
CS
2536 if (PL_restartop) {
2537 POPSTACK_TO(PL_mainstack);
2538 goto redo_body;
6224f72b 2539 }
5637ef5b 2540 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2541 FREETMPS;
14dd3ad8
GS
2542 ret = 1;
2543 break;
6224f72b
GS
2544 }
2545
14dd3ad8
GS
2546 JMPENV_POP;
2547 return ret;
312caa8e
CS
2548}
2549
dd374669 2550STATIC void
14dd3ad8
GS
2551S_run_body(pTHX_ I32 oldscope)
2552{
d3b97530
DM
2553 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2554 PL_sawampersand ? "Enabling" : "Omitting",
2555 (unsigned int)(PL_sawampersand)));
6224f72b 2556
3280af22 2557 if (!PL_restartop) {
cf2782cd 2558#ifdef DEBUGGING
f0e3f042
CS
2559 if (DEBUG_x_TEST || DEBUG_B_TEST)
2560 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2561 if (!DEBUG_q_TEST)
2562 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2563#endif
6224f72b 2564
3280af22 2565 if (PL_minus_c) {
bf49b057 2566 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2567 my_exit(0);
2568 }
3280af22 2569 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2570 PL_DBsingle_iv = 1;
9ebf26ad 2571 if (PL_initav) {
ca7b837b 2572 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2573 call_list(oldscope, PL_initav);
9ebf26ad 2574 }
f1fac472 2575#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2576 if (PL_main_root && PL_main_root->op_slabbed)
2577 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2578#endif
6224f72b
GS
2579 }
2580
2581 /* do it */
2582
ca7b837b 2583 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2584
3280af22 2585 if (PL_restartop) {
febb3a6d 2586 PL_restartjmpenv = NULL;
533c011a 2587 PL_op = PL_restartop;
3280af22 2588 PL_restartop = 0;
cea2e8a9 2589 CALLRUNOPS(aTHX);
6224f72b 2590 }
3280af22
NIS
2591 else if (PL_main_start) {
2592 CvDEPTH(PL_main_cv) = 1;
533c011a 2593 PL_op = PL_main_start;
cea2e8a9 2594 CALLRUNOPS(aTHX);
6224f72b 2595 }
f6b3007c 2596 my_exit(0);
e5964223 2597 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2598}
2599
954c1994 2600/*
ccfc67b7
JH
2601=head1 SV Manipulation Functions
2602
954c1994
GS
2603=for apidoc p||get_sv
2604
64ace3f8 2605Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2606C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2607Perl variable does not exist then it will be created. If C<flags> is zero
2608and the variable does not exist then NULL is returned.
954c1994
GS
2609
2610=cut
2611*/
2612
6224f72b 2613SV*
64ace3f8 2614Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2615{
2616 GV *gv;
7918f24d
NC
2617
2618 PERL_ARGS_ASSERT_GET_SV;
2619
64ace3f8 2620 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2621 if (gv)
2622 return GvSV(gv);
a0714e2c 2623 return NULL;
6224f72b
GS
2624}
2625
954c1994 2626/*
ccfc67b7
JH
2627=head1 Array Manipulation Functions
2628
954c1994
GS
2629=for apidoc p||get_av
2630
f0b90de1
SF
2631Returns the AV of the specified Perl global or package array with the given
2632name (so it won't work on lexical variables). C<flags> are passed
72d33970 2633to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2634Perl variable does not exist then it will be created. If C<flags> is zero
2635and the variable does not exist then NULL is returned.
954c1994 2636
f0b90de1
SF
2637Perl equivalent: C<@{"$name"}>.
2638
954c1994
GS
2639=cut
2640*/
2641
6224f72b 2642AV*
cbfd0a87 2643Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2644{
cbfd0a87 2645 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2646
2647 PERL_ARGS_ASSERT_GET_AV;
2648
cbfd0a87 2649 if (flags)
6224f72b
GS
2650 return GvAVn(gv);
2651 if (gv)
2652 return GvAV(gv);
7d49f689 2653 return NULL;
6224f72b
GS
2654}
2655
954c1994 2656/*
ccfc67b7
JH
2657=head1 Hash Manipulation Functions
2658
954c1994
GS
2659=for apidoc p||get_hv
2660
6673a63c 2661Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2662C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2663Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2664and the variable does not exist then C<NULL> is returned.
954c1994
GS
2665
2666=cut
2667*/
2668
6224f72b 2669HV*
6673a63c 2670Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2671{
6673a63c 2672 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2673
2674 PERL_ARGS_ASSERT_GET_HV;
2675
6673a63c 2676 if (flags)
a0d0e21e
LW
2677 return GvHVn(gv);
2678 if (gv)
2679 return GvHV(gv);
5c284bb0 2680 return NULL;
a0d0e21e
LW
2681}
2682
954c1994 2683/*
ccfc67b7
JH
2684=head1 CV Manipulation Functions
2685
780a5241
NC
2686=for apidoc p||get_cvn_flags
2687
2688Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2689C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2690exist then it will be declared (which has the same effect as saying
2691C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2692then NULL is returned.
2693
954c1994
GS
2694=for apidoc p||get_cv
2695
780a5241 2696Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2697
2698=cut
2699*/
2700
a0d0e21e 2701CV*
780a5241 2702Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2703{
780a5241 2704 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2705
2706 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2707
a385812b 2708 if (gv && UNLIKELY(SvROK(gv)) && SvTYPE(SvRV((SV *)gv)) == SVt_PVCV)
e05a85b2 2709 return (CV*)SvRV((SV *)gv);
a385812b 2710
334dda80
FC
2711 /* XXX this is probably not what they think they're getting.
2712 * It has the same effect as "sub name;", i.e. just a forward
2713 * declaration! */
780a5241 2714 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2715 return newSTUB(gv,0);
780a5241 2716 }
a0d0e21e 2717 if (gv)
8ebc5c01 2718 return GvCVu(gv);
601f1833 2719 return NULL;
a0d0e21e
LW
2720}
2721
2c67934f
NC
2722/* Nothing in core calls this now, but we can't replace it with a macro and
2723 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2724CV*
2725Perl_get_cv(pTHX_ const char *name, I32 flags)
2726{
7918f24d
NC
2727 PERL_ARGS_ASSERT_GET_CV;
2728
780a5241
NC
2729 return get_cvn_flags(name, strlen(name), flags);
2730}
2731
79072805
LW
2732/* Be sure to refetch the stack pointer after calling these routines. */
2733
954c1994 2734/*
ccfc67b7
JH
2735
2736=head1 Callback Functions
2737
954c1994
GS
2738=for apidoc p||call_argv
2739
f0b90de1 2740Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2741with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2742L<perlcall>.
f0b90de1
SF
2743
2744Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2745
2746=cut
2747*/
2748
a0d0e21e 2749I32
5aaab254 2750Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2751
8ac85365
NIS
2752 /* See G_* flags in cop.h */
2753 /* null terminated arg list */
8990e307 2754{
a0d0e21e 2755 dSP;
8990e307 2756
7918f24d
NC
2757 PERL_ARGS_ASSERT_CALL_ARGV;
2758
924508f0 2759 PUSHMARK(SP);
3dc78631
DM
2760 while (*argv) {
2761 mXPUSHs(newSVpv(*argv,0));
2762 argv++;
8990e307 2763 }
3dc78631 2764 PUTBACK;
864dbfa3 2765 return call_pv(sub_name, flags);
8990e307
LW
2766}
2767
954c1994
GS
2768/*
2769=for apidoc p||call_pv
2770
2771Performs a callback to the specified Perl sub. See L<perlcall>.
2772
2773=cut
2774*/
2775
a0d0e21e 2776I32
864dbfa3 2777Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2778 /* name of the subroutine */
2779 /* See G_* flags in cop.h */
a0d0e21e 2780{
7918f24d
NC
2781 PERL_ARGS_ASSERT_CALL_PV;
2782
0da0e728 2783 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2784}
2785
954c1994
GS
2786/*
2787=for apidoc p||call_method
2788
2789Performs a callback to the specified Perl method. The blessed object must
2790be on the stack. See L<perlcall>.
2791
2792=cut
2793*/
2794
a0d0e21e 2795I32
864dbfa3 2796Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2797 /* name of the subroutine */
2798 /* See G_* flags in cop.h */
a0d0e21e 2799{
46ca9bac 2800 STRLEN len;
c106c2be 2801 SV* sv;
7918f24d
NC
2802 PERL_ARGS_ASSERT_CALL_METHOD;
2803
46ca9bac 2804 len = strlen(methname);
c106c2be
RZ
2805 sv = flags & G_METHOD_NAMED
2806 ? sv_2mortal(newSVpvn_share(methname, len,0))
2807 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2808
c106c2be 2809 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2810}
2811
2812/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2813/*
2814=for apidoc p||call_sv
2815
078e2213
TC
2816Performs a callback to the Perl sub specified by the SV.
2817
7c0c544c 2818If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2819SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2820or C<SvPV(sv)> will be used as the name of the sub to call.
2821
2822If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2823C<SvPV(sv)> will be used as the name of the method to call.
2824
2825If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2826the name of the method to call.
2827
2828Some other values are treated specially for internal use and should
2829not be depended on.
2830
2831See L<perlcall>.
954c1994
GS
2832
2833=cut
2834*/
2835
a0d0e21e 2836I32
8162b70e 2837Perl_call_sv(pTHX_ SV *sv, volatile I32 flags)
8ac85365 2838 /* See G_* flags in cop.h */
a0d0e21e 2839{
5b434c73 2840 dVAR;
a0d0e21e 2841 LOGOP myop; /* fake syntax tree node */
b46e009d 2842 METHOP method_op;
aa689395 2843 I32 oldmark;
8162b70e 2844 volatile I32 retval = 0;
54310121 2845 bool oldcatch = CATCH_GET;
6224f72b 2846 int ret;
c4420975 2847 OP* const oldop = PL_op;
db36c5a1 2848 dJMPENV;
1e422769 2849
7918f24d
NC
2850 PERL_ARGS_ASSERT_CALL_SV;
2851
a0d0e21e
LW
2852 if (flags & G_DISCARD) {
2853 ENTER;
2854 SAVETMPS;
2855 }
2f8edad0
NC
2856 if (!(flags & G_WANT)) {
2857 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2858 */
2859 flags |= G_SCALAR;
2860 }
a0d0e21e 2861
aa689395 2862 Zero(&myop, 1, LOGOP);
f51d4af5 2863 if (!(flags & G_NOARGS))
aa689395 2864 myop.op_flags |= OPf_STACKED;
4f911530 2865 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2866 SAVEOP();
533c011a 2867 PL_op = (OP*)&myop;
aa689395 2868
8c9009ad 2869 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2870 dSP;
2871 EXTEND(SP, 1);
8c9009ad
DD
2872 PUSHs(sv);
2873 PUTBACK;
5b434c73 2874 }
aa689395 2875 oldmark = TOPMARK;
a0d0e21e 2876
3280af22 2877 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2878 /* Handle first BEGIN of -d. */
3280af22 2879 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2880 /* Try harder, since this may have been a sighandler, thus
2881 * curstash may be meaningless. */
ea726b52 2882 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2883 && !(flags & G_NODEBUG))
5ff48db8 2884 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2885
c106c2be 2886 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2887 Zero(&method_op, 1, METHOP);
2888 method_op.op_next = (OP*)&myop;
2889 PL_op = (OP*)&method_op;
c106c2be 2890 if ( flags & G_METHOD_NAMED ) {
b46e009d 2891 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2892 method_op.op_type = OP_METHOD_NAMED;
2893 method_op.op_u.op_meth_sv = sv;
c106c2be 2894 } else {
b46e009d 2895 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2896 method_op.op_type = OP_METHOD;
c106c2be
RZ
2897 }
2898 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2899 myop.op_type = OP_ENTERSUB;
968b3946
GS
2900 }
2901
312caa8e 2902 if (!(flags & G_EVAL)) {
0cdb2077 2903 CATCH_SET(TRUE);
d6f07c05 2904 CALL_BODY_SUB((OP*)&myop);
312caa8e 2905 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2906 CATCH_SET(oldcatch);
312caa8e
CS
2907 }
2908 else {
8e90e786 2909 I32 old_cxix;
d78bda3d 2910 myop.op_other = (OP*)&myop;
101d6365 2911 (void)POPMARK;
8e90e786 2912 old_cxix = cxstack_ix;
274ed8ae 2913 create_eval_scope(NULL, flags|G_FAKINGEVAL);
c318a6ee 2914 INCMARK;
a0d0e21e 2915
14dd3ad8 2916 JMPENV_PUSH(ret);
edb2152a 2917
6224f72b
GS
2918 switch (ret) {
2919 case 0:
14dd3ad8 2920 redo_body:
d6f07c05 2921 CALL_BODY_SUB((OP*)&myop);
312caa8e 2922 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2923 if (!(flags & G_KEEPERR)) {
ab69dbc2 2924 CLEAR_ERRSV();
8433848b 2925 }
a0d0e21e 2926 break;
6224f72b 2927 case 1:
f86702cc 2928 STATUS_ALL_FAILURE;
924ba076 2929 /* FALLTHROUGH */
6224f72b 2930 case 2:
a0d0e21e 2931 /* my_exit() was called */
03d9f026 2932 SET_CURSTASH(PL_defstash);
a0d0e21e 2933 FREETMPS;
14dd3ad8 2934 JMPENV_POP;
f86702cc 2935 my_exit_jump();
e5964223 2936 NOT_REACHED; /* NOTREACHED */
6224f72b 2937 case 3:
3280af22 2938 if (PL_restartop) {
febb3a6d 2939 PL_restartjmpenv = NULL;
533c011a 2940 PL_op = PL_restartop;
3280af22 2941 PL_restartop = 0;
312caa8e 2942 goto redo_body;
a0d0e21e 2943 }
3280af22 2944 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2945 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2946 retval = 0;
2947 else {
2948 retval = 1;
3280af22 2949 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2950 }
312caa8e 2951 break;
a0d0e21e 2952 }
a0d0e21e 2953
8e90e786
DM
2954 /* if we croaked, depending on how we croaked the eval scope
2955 * may or may not have already been popped */
2956 if (cxstack_ix > old_cxix) {
2957 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2958 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2959 delete_eval_scope();
8e90e786 2960 }
14dd3ad8 2961 JMPENV_POP;
a0d0e21e 2962 }
1e422769 2963
a0d0e21e 2964 if (flags & G_DISCARD) {
3280af22 2965 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2966 retval = 0;
2967 FREETMPS;
2968 LEAVE;
2969 }
533c011a 2970 PL_op = oldop;
a0d0e21e
LW
2971 return retval;
2972}
2973
6e72f9df 2974/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2975
954c1994
GS
2976/*
2977=for apidoc p||eval_sv
2978
72d33970 2979Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2980as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2981
2982=cut
2983*/
2984
a0d0e21e 2985I32
864dbfa3 2986Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2987
8ac85365 2988 /* See G_* flags in cop.h */
a0d0e21e 2989{
97aff369 2990 dVAR;
a0d0e21e 2991 UNOP myop; /* fake syntax tree node */
8162b70e
AC
2992 volatile I32 oldmark;
2993 volatile I32 retval = 0;
6224f72b 2994 int ret;
c4420975 2995 OP* const oldop = PL_op;
db36c5a1 2996 dJMPENV;
84902520 2997
7918f24d
NC
2998 PERL_ARGS_ASSERT_EVAL_SV;
2999
4633a7c4
LW
3000 if (flags & G_DISCARD) {
3001 ENTER;
3002 SAVETMPS;
3003 }
3004
462e5cf6 3005 SAVEOP();
533c011a 3006 PL_op = (OP*)&myop;
5ff48db8 3007 Zero(&myop, 1, UNOP);
5b434c73
DD
3008 {
3009 dSP;
3010 oldmark = SP - PL_stack_base;
3011 EXTEND(SP, 1);
3012 PUSHs(sv);
3013 PUTBACK;
3014 }
79072805 3015
4633a7c4
LW
3016 if (!(flags & G_NOARGS))
3017 myop.op_flags = OPf_STACKED;
6e72f9df 3018 myop.op_type = OP_ENTEREVAL;
4f911530 3019 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
3020 if (flags & G_KEEPERR)
3021 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
3022
3023 if (flags & G_RE_REPARSING)
3024 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 3025
dedbcade 3026 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 3027 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
3028 TAINT_PROPER("eval_sv()");
3029
14dd3ad8 3030 JMPENV_PUSH(ret);
6224f72b
GS
3031 switch (ret) {
3032 case 0:
14dd3ad8 3033 redo_body:
2ba65d5f
DM
3034 if (PL_op == (OP*)(&myop)) {
3035 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
3036 if (!PL_op)
3037 goto fail; /* failed in compilation */
3038 }
4aca2f62 3039 CALLRUNOPS(aTHX);
312caa8e 3040 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 3041 if (!(flags & G_KEEPERR)) {
ab69dbc2 3042 CLEAR_ERRSV();
8433848b 3043 }
4633a7c4 3044 break;
6224f72b 3045 case 1:
f86702cc 3046 STATUS_ALL_FAILURE;
924ba076 3047 /* FALLTHROUGH */
6224f72b 3048 case 2:
4633a7c4 3049 /* my_exit() was called */
03d9f026 3050 SET_CURSTASH(PL_defstash);
4633a7c4 3051 FREETMPS;
14dd3ad8 3052 JMPENV_POP;
f86702cc 3053 my_exit_jump();
e5964223 3054 NOT_REACHED; /* NOTREACHED */
6224f72b 3055 case 3:
3280af22 3056 if (PL_restartop) {
febb3a6d 3057 PL_restartjmpenv = NULL;
533c011a 3058 PL_op = PL_restartop;
3280af22 3059 PL_restartop = 0;
312caa8e 3060 goto redo_body;
4633a7c4 3061 }
4aca2f62 3062 fail:
3280af22 3063 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 3064 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
3065 retval = 0;
3066 else {
3067 retval = 1;
3280af22 3068 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 3069 }
312caa8e 3070 break;
4633a7c4
LW
3071 }
3072
14dd3ad8 3073 JMPENV_POP;
4633a7c4 3074 if (flags & G_DISCARD) {
3280af22 3075 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
3076 retval = 0;
3077 FREETMPS;
3078 LEAVE;
3079 }
533c011a 3080 PL_op = oldop;
4633a7c4
LW
3081 return retval;
3082}
3083
954c1994
GS
3084/*
3085=for apidoc p||eval_pv
3086
422791e4 3087Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
3088
3089=cut
3090*/
3091
137443ea 3092SV*
864dbfa3 3093Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3094{
137443ea
PP
3095 SV* sv = newSVpv(p, 0);
3096
7918f24d
NC
3097 PERL_ARGS_ASSERT_EVAL_PV;
3098
864dbfa3 3099 eval_sv(sv, G_SCALAR);
137443ea
PP
3100 SvREFCNT_dec(sv);
3101
ed1786ad
DD
3102 {
3103 dSP;
3104 sv = POPs;
3105 PUTBACK;
3106 }
137443ea 3107
eed484f9
DD
3108 /* just check empty string or undef? */
3109 if (croak_on_error) {
3110 SV * const errsv = ERRSV;
3111 if(SvTRUE_NN(errsv))
3112 /* replace with croak_sv? */
3113 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3114 }
137443ea
PP
3115
3116 return sv;
3117}
3118
4633a7c4
LW
3119/* Require a module. */
3120
954c1994 3121/*
ccfc67b7
JH
3122=head1 Embedding Functions
3123
954c1994
GS
3124=for apidoc p||require_pv
3125
7d3fb230
BS
3126Tells Perl to C<require> the file named by the string argument. It is
3127analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3128implemented that way; consider using load_module instead.
954c1994 3129
7d3fb230 3130=cut */
954c1994 3131
4633a7c4 3132void
864dbfa3 3133Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3134{
d3acc0f7 3135 dSP;
97aff369 3136 SV* sv;
7918f24d
NC
3137
3138 PERL_ARGS_ASSERT_REQUIRE_PV;
3139
e788e7d3 3140 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3141 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3142 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3143 POPSTACK;
79072805
LW
3144}
3145
76e3520e 3146STATIC void
b6f82619 3147S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3148{
ab821d7f 3149 /* This message really ought to be max 23 lines.
75c72d73 3150 * Removed -h because the user already knows that option. Others? */
fb73857a 3151
1566c39d
NC
3152 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3153 minimum of 509 character string literals. */
27da23d5 3154 static const char * const usage_msg[] = {
1566c39d
NC
3155" -0[octal] specify record separator (\\0, if no argument)\n"
3156" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3157" -C[number/list] enables the listed Unicode features\n"
3158" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3159" -d[:debugger] run program under debugger\n"
3160" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3161" -e program one line of program (several -e's allowed, omit programfile)\n"
3162" -E program like -e, but enables all optional features\n"
3163" -f don't do $sitelib/sitecustomize.pl at startup\n"
3164" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3165" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3166" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3167" -l[octal] enable line ending processing, specifies line terminator\n"
3168" -[mM][-]module execute \"use/no module...\" before executing program\n"
3169" -n assume \"while (<>) { ... }\" loop around program\n"
3170" -p assume loop like -n but print line also, like sed\n"
3171" -s enable rudimentary parsing for switches after programfile\n"
3172" -S look for programfile using PATH environment variable\n",
3173" -t enable tainting warnings\n"
3174" -T enable tainting checks\n"
3175" -u dump core after parsing program\n"
3176" -U allow unsafe operations\n"
3177" -v print version, patchlevel and license\n"
3178" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3179" -w enable many useful warnings\n"
1566c39d
NC
3180" -W enable all warnings\n"
3181" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3182" -X disable all warnings\n"
3183" \n"
3184"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3185NULL
3186};
27da23d5 3187 const char * const *p = usage_msg;
1566c39d 3188 PerlIO *out = PerlIO_stdout();
fb73857a 3189
1566c39d
NC
3190 PerlIO_printf(out,
3191 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3192 PL_origargv[0]);
fb73857a 3193 while (*p)
1566c39d 3194 PerlIO_puts(out, *p++);
b6f82619 3195 my_exit(0);
4633a7c4
LW
3196}
3197
b4ab917c
DM
3198/* convert a string of -D options (or digits) into an int.
3199 * sets *s to point to the char after the options */
3200
3201#ifdef DEBUGGING
3202int
e1ec3a88 3203Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3204{
27da23d5 3205 static const char * const usage_msgd[] = {
651b8f1a
NC
3206 " Debugging flag values: (see also -d)\n"
3207 " p Tokenizing and parsing (with v, displays parse stack)\n"
3208 " s Stack snapshots (with v, displays all stacks)\n"
3209 " l Context (loop) stack processing\n"
3210 " t Trace execution\n"
3211 " o Method and overloading resolution\n",
3212 " c String/numeric conversions\n"
3213 " P Print profiling info, source file input state\n"
3214 " m Memory and SV allocation\n"
3215 " f Format processing\n"
3216 " r Regular expression parsing and execution\n"
3217 " x Syntax tree dump\n",
3218 " u Tainting checks\n"
3219 " H Hash dump -- usurps values()\n"
3220 " X Scratchpad allocation\n"
3221 " D Cleaning up\n"
56967202 3222 " S Op slab allocation\n"
651b8f1a
NC
3223 " T Tokenising\n"
3224 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3225 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3226 " v Verbose: use in conjunction with other flags\n"
3227 " C Copy On Write\n"
3228 " A Consistency checks on internal structures\n"
3229 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3230 " M trace smart match resolution\n"
3231 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3232 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3233 " i trace PerlIO layer processing\n",
e6e64d9b
JC
3234 NULL
3235 };
22ff3130 3236 UV uv = 0;
7918f24d
NC
3237
3238 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3239
b4ab917c
DM
3240 if (isALPHA(**s)) {
3241 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3242 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3243
0eb30aeb 3244 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3245 const char * const d = strchr(debopts,**s);
b4ab917c 3246 if (d)
22ff3130 3247 uv |= 1 << (d - debopts);
b4ab917c 3248 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3249 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3250 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3251 }
3252 }
e6e64d9b 3253 else if (isDIGIT(**s)) {
96e440d2 3254 const char* e;
22ff3130 3255 if (grok_atoUV(*s, &uv, &e))
96e440d2 3256 *s = e;
0eb30aeb 3257 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3258 }
ddcf8bc1 3259 else if (givehelp) {
06e869a4 3260 const char *const *p = usage_msgd;
651b8f1a 3261 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3262 }
22ff3130 3263 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3264}
3265#endif
3266
79072805
LW
3267/* This routine handles any switches that can be given during run */
3268
c7030b81
NC
3269const char *
3270Perl_moreswitches(pTHX_ const char *s)
79072805 3271{
27da23d5 3272 dVAR;
84c133a0 3273 UV rschar;
0544e6df 3274 const char option = *s; /* used to remember option in -m/-M code */
79072805 3275
7918f24d
NC
3276 PERL_ARGS_ASSERT_MORESWITCHES;
3277
79072805
LW
3278 switch (*s) {
3279 case '0':
a863c7d1 3280 {
f2095865 3281 I32 flags = 0;
a3b680e6 3282 STRLEN numlen;
f2095865
JH
3283
3284 SvREFCNT_dec(PL_rs);
3285 if (s[1] == 'x' && s[2]) {
a3b680e6 3286 const char *e = s+=2;
f2095865
JH
3287 U8 *tmps;
3288
a3b680e6
AL
3289 while (*e)
3290 e++;
f2095865
JH
3291 numlen = e - s;
3292 flags = PERL_SCAN_SILENT_ILLDIGIT;
3293 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3294 if (s + numlen < e) {
3295 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3296 numlen = 0;
3297 s--;
3298 }
396482e1 3299 PL_rs = newSVpvs("");
10656159 3300 tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865 3301 uvchr_to_utf8(tmps, rschar);
5f560d8a 3302 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3303 SvUTF8_on(PL_rs);
3304 }
3305 else {
3306 numlen = 4;
3307 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3308 if (rschar & ~((U8)~0))
3309 PL_rs = &PL_sv_undef;
3310 else if (!rschar && numlen >= 2)
396482e1 3311 PL_rs = newSVpvs("");
f2095865
JH
3312 else {
3313 char ch = (char)rschar;
3314 PL_rs = newSVpvn(&ch, 1);
3315 }
3316 }
64ace3f8 3317 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3318 return s + numlen;
a863c7d1 3319 }
46487f74 3320 case 'C':
a05d7ebb 3321 s++;
dd374669 3322 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3323 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3324 PL_utf8cache = -1;
46487f74 3325 return s;
2304df62 3326 case 'F':
5fc691f1 3327 PL_minus_a = TRUE;
3280af22 3328 PL_minus_F = TRUE;
24ffa309 3329 PL_minus_n = TRUE;
ebce5377
RGS
3330 PL_splitstr = ++s;
3331 while (*s && !isSPACE(*s)) ++s;
e49e380e 3332 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3333 return s;
79072805 3334 case 'a':
3280af22 3335 PL_minus_a = TRUE;
24ffa309 3336 PL_minus_n = TRUE;
79072805
LW
3337 s++;
3338 return s;
3339 case 'c':
3280af22 3340 PL_minus_c = TRUE;
79072805
LW
3341 s++;
3342 return s;
3343 case 'd':
f20b2998 3344 forbid_setid('d', FALSE);
4633a7c4 3345 s++;
2cbb2ee1
RGS
3346
3347 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3348 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3349 ++s;
3350 my_setenv("PERL5DB_THREADED", "1");
3351 }
3352
70c94a19
RR
3353 /* The following permits -d:Mod to accepts arguments following an =
3354 in the fashion that -MSome::Mod does. */
3355 if (*s == ':' || *s == '=') {
b19934fb
NC
3356 const char *start;
3357 const char *end;
3358 SV *sv;
3359
3360 if (*++s == '-') {
3361 ++s;
3362 sv = newSVpvs("no Devel::");
3363 } else {
3364 sv = newSVpvs("use Devel::");
3365 }
3366
3367 start = s;
3368 end = s + strlen(s);
f85893a1 3369
b19934fb 3370 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3371 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3372 if (*s != '=')
f85893a1 3373 sv_catpvn(sv, start, end - start);
70c94a19
RR
3374 else {
3375 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3376 /* Don't use NUL as q// delimiter here, this string goes in the
3377 * environment. */
3378 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3379 }
f85893a1 3380 s = end;
184f32ec 3381 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3382 SvREFCNT_dec(sv);
4633a7c4 3383 }
ed094faf 3384 if (!PL_perldb) {
3280af22 3385 PL_perldb = PERLDB_ALL;
a0d0e21e 3386 init_debugger();
ed094faf 3387 }
79072805
LW
3388 return s;
3389 case 'D':
0453d815 3390 {
79072805 3391#ifdef DEBUGGING
f20b2998 3392 forbid_setid('D', FALSE);
b4ab917c 3393 s++;
dd374669 3394 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3395#else /* !DEBUGGING */
0453d815 3396 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3397 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3398 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3399 for (s++; isWORDCHAR(*s); s++) ;
79072805 3400#endif
79072805 3401 return s;
2b5060ae 3402 NOT_REACHED; /* NOTREACHED */
0453d815 3403 }
4633a7c4 3404 case 'h':
b6f82619 3405 usage();
2b5060ae
DM
3406 NOT_REACHED; /* NOTREACHED */
3407
79072805 3408 case 'i':
43c5f42d 3409 Safefree(PL_inplace);
5ef5d758 3410 {
d4c19fe8 3411 const char * const start = ++s;
5ef5d758
NC
3412 while (*s && !isSPACE(*s))
3413 ++s;
3414
3415 PL_inplace = savepvn(start, s - start);
3416 }
fb73857a 3417 return s;
4e49a025 3418 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3419 forbid_setid('I', FALSE);
fb73857a
PP
3420 ++s;
3421 while (*s && isSPACE(*s))
3422 ++s;
3423 if (*s) {
c7030b81 3424 const char *e, *p;
0df16ed7
GS
3425 p = s;
3426 /* ignore trailing spaces (possibly followed by other switches) */
3427 do {
3428 for (e = p; *e && !isSPACE(*e); e++) ;
3429 p = e;
3430 while (isSPACE(*p))
3431 p++;
3432 } while (*p && *p != '-');
55b4bc1c 3433 incpush(s, e-s,
e28f3139 3434 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3435 s = p;
3436 if (*s == '-')
3437 s++;
79072805
LW
3438 }
3439 else
a67e862a 3440 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3441 return s;
79072805 3442 case 'l':
3280af22 3443 PL_minus_l = TRUE;
79072805 3444 s++;
7889fe52
NIS
3445 if (PL_ors_sv) {
3446 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3447 PL_ors_sv = NULL;
7889fe52 3448 }
79072805 3449 if (isDIGIT(*s)) {
53305cf1 3450 I32 flags = 0;
a3b680e6 3451 STRLEN numlen;
396482e1 3452 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3453 numlen = 3 + (*s == '0');
3454 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3455 s += numlen;
3456 }
3457 else {
8bfdd7d9 3458 if (RsPARA(PL_rs)) {
396482e1 3459 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3460 }
3461 else {
8bfdd7d9 3462 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3463 }
79072805
LW
3464 }
3465 return s;
1a30305b 3466 case 'M':
f20b2998 3467 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3468 /* FALLTHROUGH */
1a30305b 3469 case 'm':
f20b2998 3470 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3471 if (*++s) {
c7030b81 3472 const char *start;
b64cb68c 3473 const char *end;
11343788 3474 SV *sv;
e1ec3a88 3475 const char *use = "use ";
0544e6df 3476 bool colon = FALSE;
a5f75d66 3477 /* -M-foo == 'no foo' */
d0043bd1
NC
3478 /* Leading space on " no " is deliberate, to make both
3479 possibilities the same length. */
3480 if (*s == '-') { use = " no "; ++s; }
3481 sv = newSVpvn(use,4);
a5f75d66 3482 start = s;
1a30305b 3483 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3484 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3485 if( *s++ == ':' ) {
3486 if( *s == ':' )
3487 s++;
3488 else
3489 colon = TRUE;
3490 }