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Restore "Move utility macros to their own file"
[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
7114a2d2 65#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 66char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP		 67#endif
68
acfe0abc 69static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 70
cc69b689 71#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 72# define validate_suid(rsfp) NOOP
cc69b689 73#else
b24bc095 74# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 75#endif
8d063cd8 76
d6f07c05
AL		 77#define CALL_BODY_SUB(myop) \
78 if (PL_op == (myop)) \
139d0ce6 79 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL		 80 if (PL_op) \
81 CALLRUNOPS(aTHX);
82
83#define CALL_LIST_BODY(cv) \
84 PUSHMARK(PL_stack_sp); \
9a8aa25b 85 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 86
e6827a76 87static void
daa7d858 88S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 89{
27da23d5 90 dVAR;
e6827a76
NC		 91 if (!PL_curinterp) {
92 PERL_SET_INTERP(my_perl);
3db8f154 93#if defined(USE_ITHREADS)
e6827a76
NC		 94 INIT_THREADS;
95 ALLOC_THREAD_KEY;
96 PERL_SET_THX(my_perl);
97 OP_REFCNT_INIT;
e8570548 98 OP_CHECK_MUTEX_INIT;
71ad1b0c 99 HINTS_REFCNT_INIT;
929e1213 100 LOCALE_INIT;
e6827a76 101 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM		 102 MUTEX_INIT(&PL_my_ctx_mutex);
103# endif
e6827a76 104 }
c0bce9aa
NC		 105#if defined(USE_ITHREADS)
106 else
107#else
108 /* This always happens for non-ithreads */
109#endif
110 {
e6827a76
NC		 111 PERL_SET_THX(my_perl);
112 }
113}
06d86050 114
cbec8ebe
DM		 115
116/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
117
118void
119Perl_sys_init(int* argc, char*** argv)
120{
4fc0badb 121 dVAR;
7918f24d
NC		 122
123 PERL_ARGS_ASSERT_SYS_INIT;
124
cbec8ebe
DM		 125 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
126 PERL_UNUSED_ARG(argv);
127 PERL_SYS_INIT_BODY(argc, argv);
128}
129
130void
131Perl_sys_init3(int* argc, char*** argv, char*** env)
132{
4fc0badb 133 dVAR;
7918f24d
NC		 134
135 PERL_ARGS_ASSERT_SYS_INIT3;
136
cbec8ebe
DM		 137 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
138 PERL_UNUSED_ARG(argv);
139 PERL_UNUSED_ARG(env);
140 PERL_SYS_INIT3_BODY(argc, argv, env);
141}
142
143void
88772978 144Perl_sys_term(void)
cbec8ebe 145{
4fc0badb 146 dVAR;
bf81751b
DM		 147 if (!PL_veto_cleanup) {
148 PERL_SYS_TERM_BODY();
149 }
cbec8ebe
DM		 150}
151
152
32e30700
GS		 153#ifdef PERL_IMPLICIT_SYS
154PerlInterpreter *
7766f137
GS		 155perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
156 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 157 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
158 struct IPerlDir* ipD, struct IPerlSock* ipS,
159 struct IPerlProc* ipP)
160{
161 PerlInterpreter *my_perl;
7918f24d
NC		 162
163 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
164
9f653bb5 165 /* Newx() needs interpreter, so call malloc() instead */
32e30700 166 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 167 S_init_tls_and_interp(my_perl);
32e30700
GS		 168 Zero(my_perl, 1, PerlInterpreter);
169 PL_Mem = ipM;
7766f137
GS		 170 PL_MemShared = ipMS;
171 PL_MemParse = ipMP;
32e30700
GS		 172 PL_Env = ipE;
173 PL_StdIO = ipStd;
174 PL_LIO = ipLIO;
175 PL_Dir = ipD;
176 PL_Sock = ipS;
177 PL_Proc = ipP;
7cb608b5 178 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 179
32e30700
GS		 180 return my_perl;
181}
182#else
954c1994
GS		 183
184/*
ccfc67b7
JH		 185=head1 Embedding Functions
186
954c1994
GS		 187=for apidoc perl_alloc
188
189Allocates a new Perl interpreter. See L<perlembed>.
190
191=cut
192*/
193
93a17b20 194PerlInterpreter *
cea2e8a9 195perl_alloc(void)
79072805 196{
cea2e8a9 197 PerlInterpreter *my_perl;
79072805 198
9f653bb5 199 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 200 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 201
e6827a76 202 S_init_tls_and_interp(my_perl);
7cb608b5 203#ifndef PERL_TRACK_MEMPOOL
07409e01 204 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC		 205#else
206 Zero(my_perl, 1, PerlInterpreter);
207 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
208 return my_perl;
209#endif
79072805 210}
32e30700 211#endif /* PERL_IMPLICIT_SYS */
79072805 212
954c1994
GS		 213/*
214=for apidoc perl_construct
215
216Initializes a new Perl interpreter. See L<perlembed>.
217
218=cut
219*/
220
0927ade0 221static void
222S_fixup_platform_bugs(void)
223{
224#if defined(__GLIBC__) && IVSIZE == 8 \
225 && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
226 {
227 IV l = 3;
228 IV r = -10;
229 /* Cannot do this check with inlined IV constants since
230 * that seems to work correctly even with the buggy glibc. */
231 if (l % r == -3) {
232 dTHX;
233 /* Yikes, we have the bug.
234 * Patch in the workaround version. */
235 PL_ppaddr[OP_I_MODULO] = &Perl_pp_i_modulo_glibc_bugfix;
236 }
237 }
238#endif
239}
240
79072805 241void
0cb96387 242perl_construct(pTHXx)
79072805 243{
27da23d5 244 dVAR;
7918f24d
NC		 245
246 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
247
8990e307 248#ifdef MULTIPLICITY
54aff467 249 init_interp();
ac27b0f5 250 PL_perl_destruct_level = 1;
54aff467 251#else
7918f24d 252 PERL_UNUSED_ARG(my_perl);
54aff467
GS		 253 if (PL_perl_destruct_level > 0)
254 init_interp();
255#endif
34caed6d
DM		 256 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
257
75d476e2
SM		 258#ifdef PERL_TRACE_OPS
259 Zero(PL_op_exec_cnt, OP_max+2, UV);
260#endif
261
0d96b528 262 init_constants();
34caed6d
DM		 263
264 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 265 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM		 266
267 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 268#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 269 PL_pidstatus = newHV();
ca0c25f6 270#endif
79072805 271
396482e1 272 PL_rs = newSVpvs("\n");
dc92893f 273
cea2e8a9 274 init_stacks();
79072805 275
748a9306 276 init_ids();
a5f75d66 277
0927ade0 278 S_fixup_platform_bugs();
279
312caa8e 280 JMPENV_BOOTSTRAP;
f86702cc
PP		 281 STATUS_ALL_SUCCESS;
282
0672f40e 283 init_i18nl10n(1);
0b5b802d 284
ab821d7f 285#if defined(LOCAL_PATCH_COUNT)
3280af22 286 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP		 287#endif
288
52853b95
GS		 289#ifdef HAVE_INTERP_INTERN
290 sys_intern_init();
291#endif
292
3a1ee7e8 293 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 294
3280af22
NIS		 295 PL_fdpid = newAV(); /* for remembering popen pids by fd */
296 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 297 PL_errors = newSVpvs("");
854da30f
YO		 298 SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
299 SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
300 SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
1fcf4c12 301#ifdef USE_ITHREADS
402d2eb1
NC		 302 /* First entry is a list of empty elements. It needs to be initialised
303 else all hell breaks loose in S_find_uninit_var(). */
304 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 305 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 306 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 307#endif
e5dd39fc 308#ifdef USE_REENTRANT_API
59bd0823 309 Perl_reentrant_init(aTHX);
e5dd39fc 310#endif
e6a172f3 311 if (PL_hash_seed_set == FALSE) {
9d5e3f1a
YO		 312 /* Initialize the hash seed and state at startup. This must be
313 * done very early, before ANY hashes are constructed, and once
314 * setup is fixed for the lifetime of the process.
315 *
316 * If you decide to disable the seeding process you should choose
317 * a suitable seed yourself and define PERL_HASH_SEED to a well chosen
318 * string. See hv_func.h for details.
319 */
320#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
321 /* get the hash seed from the environment or from an RNG */
7dc86639 322 Perl_get_hash_seed(aTHX_ PL_hash_seed);
9d5e3f1a
YO		 323#else /*if !(defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)) */
324 /* they want a hard coded seed, check that it is long enough */
325 assert( strlen(PERL_HASH_SEED) >= PERL_HASH_SEED_BYTES );
e6a172f3
YO		 326#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
327
9d5e3f1a
YO		 328 /* now we use the chosen seed to initialize the state -
329 * in some configurations this may be a relatively speaking
330 * expensive operation, but we only have to do it once at startup */
331 PERL_HASH_SEED_STATE(PERL_HASH_SEED,PL_hash_state);
332
333#ifdef PERL_USE_SINGLE_CHAR_HASH_CACHE
334 /* we can build a special cache for 0/1 byte keys, if people choose
335 * I suspect most of the time it is not worth it */
336 {
337 char str[2]="\0";
338 int i;
339 for (i=0;i<256;i++) {
340 str[0]= i;
341 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[i],str,1);
342 }
343 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[256],str,0);
344 }
345#endif
346 /* at this point we have initialezed the hash function, and we can start
347 * constructing hashes */
348 PL_hash_seed_set= TRUE;
349 }
3d47000e
AB		 350 /* Note that strtab is a rather special HV. Assumptions are made
351 about not iterating on it, and not adding tie magic to it.
352 It is properly deallocated in perl_destruct() */
353 PL_strtab = newHV();
354
9d5e3f1a
YO		 355 /* SHAREKEYS tells us that the hash has its keys shared with PL_strtab,
356 * which is not the case with PL_strtab itself */
3d47000e 357 HvSHAREKEYS_off(PL_strtab); /* mandatory */
9d5e3f1a 358 hv_ksplit(PL_strtab, 1 << 11);
3d47000e 359
a38ab475
RZ		 360 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
361
2f42fcb0
JH		 362#ifndef PERL_MICRO
363# ifdef USE_ENVIRON_ARRAY
0631ea03 364 PL_origenviron = environ;
2f42fcb0 365# endif
0631ea03
AB		 366#endif
367
5311654c 368 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 369 * available or if the sysconf() fails, use the HZ.
27da23d5
JH		 370 * The HZ if not originally defined has been by now
371 * been defined as CLK_TCK, if available. */
b6c36746 372#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH		 373 PL_clocktick = sysconf(_SC_CLK_TCK);
374 if (PL_clocktick <= 0)
375#endif
376 PL_clocktick = HZ;
377
081fc587
AB		 378 PL_stashcache = newHV();
379
e8e3635e 380 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 381
27da23d5
JH		 382#ifdef HAS_MMAP
383 if (!PL_mmap_page_size) {
384#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
385 {
386 SETERRNO(0, SS_NORMAL);
387# ifdef _SC_PAGESIZE
388 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
389# else
390 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
391# endif
392 if ((long) PL_mmap_page_size < 0) {
393 if (errno) {
44f8325f 394 SV * const error = ERRSV;
d4c19fe8 395 SvUPGRADE(error, SVt_PV);
0510663f 396 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH		 397 }
398 else
399 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
400 }
401 }
402#else
403# ifdef HAS_GETPAGESIZE
404 PL_mmap_page_size = getpagesize();
405# else
406# if defined(I_SYS_PARAM) && defined(PAGESIZE)
407 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
408# endif
409# endif
410#endif
411 if (PL_mmap_page_size <= 0)
412 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
413 (IV) PL_mmap_page_size);
414 }
415#endif /* HAS_MMAP */
416
417#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
418 PL_timesbase.tms_utime = 0;
419 PL_timesbase.tms_stime = 0;
420 PL_timesbase.tms_cutime = 0;
421 PL_timesbase.tms_cstime = 0;
422#endif
423
7d113631
NC		 424 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
425
a3e6e81e 426 PL_registered_mros = newHV();
9e169432
NC		 427 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
428 HvMAX(PL_registered_mros) = 0;
a3e6e81e 429
7b8dd5f4
KW		 430 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
431 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
432 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
433 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
434 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
435 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
436 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
437 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
438 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
439 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
440 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
441 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW		 442 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
443 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
444 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
445 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 446 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW		 447 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
448 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 449 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
9e7ded3f 450 PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist);
6ebbc862
KW		 451#ifdef USE_THREAD_SAFE_LOCALE
452 PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
453#endif
7b8dd5f4 454
8990e307 455 ENTER;
79072805
LW		 456}
457
954c1994 458/*
62375a60
NIS		 459=for apidoc nothreadhook
460
461Stub that provides thread hook for perl_destruct when there are
462no threads.
463
464=cut
465*/
466
467int
4e9e3734 468Perl_nothreadhook(pTHX)
62375a60 469{
96a5add6 470 PERL_UNUSED_CONTEXT;
62375a60
NIS		 471 return 0;
472}
473
41e4abd8
NC		 474#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
475void
476Perl_dump_sv_child(pTHX_ SV *sv)
477{
478 ssize_t got;
bf357333
NC		 479 const int sock = PL_dumper_fd;
480 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC		 481 union control_un control;
482 struct msghdr msg;
808ad2d0 483 struct iovec vec[2];
bf357333 484 struct cmsghdr *cmptr;
808ad2d0
NC		 485 int returned_errno;
486 unsigned char buffer[256];
41e4abd8 487
7918f24d
NC		 488 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
489
bf357333 490 if(sock == -1 || debug_fd == -1)
41e4abd8
NC		 491 return;
492
493 PerlIO_flush(Perl_debug_log);
494
bf357333
NC		 495 /* All these shenanigans are to pass a file descriptor over to our child for
496 it to dump out to. We can't let it hold open the file descriptor when it
497 forks, as the file descriptor it will dump to can turn out to be one end
498 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 499 be open, the wait would be forever.) */
bf357333
NC		 500
501 msg.msg_control = control.control;
502 msg.msg_controllen = sizeof(control.control);
503 /* We're a connected socket so we don't need a destination */
504 msg.msg_name = NULL;
505 msg.msg_namelen = 0;
506 msg.msg_iov = vec;
808ad2d0 507 msg.msg_iovlen = 1;
bf357333
NC		 508
509 cmptr = CMSG_FIRSTHDR(&msg);
510 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
511 cmptr->cmsg_level = SOL_SOCKET;
512 cmptr->cmsg_type = SCM_RIGHTS;
513 *((int *)CMSG_DATA(cmptr)) = 1;
514
515 vec[0].iov_base = (void*)&sv;
516 vec[0].iov_len = sizeof(sv);
517 got = sendmsg(sock, &msg, 0);
41e4abd8
NC		 518
519 if(got < 0) {
bf357333 520 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC		 521 abort();
522 }
bf357333
NC		 523 if(got < sizeof(sv)) {
524 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC		 525 abort();
526 }
527
808ad2d0
NC		 528 /* Return protocol is
529 int: errno value
530 unsigned char: length of location string (0 for empty)
531 unsigned char*: string (not terminated)
532 */
533 vec[0].iov_base = (void*)&returned_errno;
534 vec[0].iov_len = sizeof(returned_errno);
535 vec[1].iov_base = buffer;
536 vec[1].iov_len = 1;
537
538 got = readv(sock, vec, 2);
41e4abd8
NC		 539
540 if(got < 0) {
541 perror("Debug leaking scalars parent read failed");
808ad2d0 542 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 543 abort();
544 }
808ad2d0 545 if(got < sizeof(returned_errno) + 1) {
41e4abd8 546 perror("Debug leaking scalars parent short read");
808ad2d0 547 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 548 abort();
549 }
550
808ad2d0
NC		 551 if (*buffer) {
552 got = read(sock, buffer + 1, *buffer);
553 if(got < 0) {
554 perror("Debug leaking scalars parent read 2 failed");
555 PerlIO_flush(PerlIO_stderr());
556 abort();
557 }
558
559 if(got < *buffer) {
560 perror("Debug leaking scalars parent short read 2");
561 PerlIO_flush(PerlIO_stderr());
562 abort();
563 }
564 }
565
566 if (returned_errno || *buffer) {
567 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
568 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 569 returned_errno, Strerror(returned_errno));
41e4abd8
NC		 570 }
571}
572#endif
573
62375a60 574/*
954c1994
GS		 575=for apidoc perl_destruct
576
577Shuts down a Perl interpreter. See L<perlembed>.
578
579=cut
580*/
581
31d77e54 582int
0cb96387 583perl_destruct(pTHXx)
79072805 584{
27da23d5 585 dVAR;
be2ea8ed 586 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 587 HV *hv;
2aa47728 588#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC		 589 pid_t child;
590#endif
9c0b6888 591 int i;
8990e307 592
7918f24d
NC		 593 PERL_ARGS_ASSERT_PERL_DESTRUCT;
594#ifndef MULTIPLICITY
ed6c66dd 595 PERL_UNUSED_ARG(my_perl);
7918f24d 596#endif
9d4ba2ae 597
3d22c4f0
GG		 598 assert(PL_scopestack_ix == 1);
599
7766f137
GS		 600 /* wait for all pseudo-forked children to finish */
601 PERL_WAIT_FOR_CHILDREN;
602
3280af22 603 destruct_level = PL_perl_destruct_level;
36e77d41 604#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 605 {
9d4ba2ae
AL		 606 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
607 if (s) {
96e440d2
JH		 608 int i;
609 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
610 i = -1;
611 } else {
22ff3130
HS		 612 UV uv;
613 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
614 i = (int)uv;
615 else
616 i = 0;
96e440d2 617 }
36e77d41
DD		 618#ifdef DEBUGGING
619 if (destruct_level < i) destruct_level = i;
620#endif
621#ifdef PERL_TRACK_MEMPOOL
f5199772
KW		 622 /* RT #114496, for perl_free */
623 PL_perl_destruct_level = i;
36e77d41 624#endif
5f05dabc 625 }
4633a7c4
LW		 626 }
627#endif
628
27da23d5 629 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 630 dJMPENV;
631 int x = 0;
632
633 JMPENV_PUSH(x);
1b6737cc 634 PERL_UNUSED_VAR(x);
9ebf26ad 635 if (PL_endav && !PL_minus_c) {
ca7b837b 636 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 637 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 638 }
f3faeb53 639 JMPENV_POP;
26f423df 640 }
f3faeb53 641 LEAVE;
a0d0e21e 642 FREETMPS;
3d22c4f0 643 assert(PL_scopestack_ix == 0);
a0d0e21e 644
e00b64d4 645 /* Need to flush since END blocks can produce output */
8abddda3
TC		 646 /* flush stdout separately, since we can identify it */
647#ifdef USE_PERLIO
648 {
649 PerlIO *stdo = PerlIO_stdout();
650 if (*stdo && PerlIO_flush(stdo)) {
651 PerlIO_restore_errno(stdo);
675c73ca
MB		 652 if (errno)
653 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
654 Strerror(errno));
8abddda3
TC		 655 if (!STATUS_UNIX)
656 STATUS_ALL_FAILURE;
657 }
658 }
659#endif
f13a2bc0 660 my_fflush_all();
e00b64d4 661
75d476e2 662#ifdef PERL_TRACE_OPS
e71f25b3
JC		 663 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
664 {
665 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
666 UV uv;
667
668 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
669 || !(uv > 0))
670 goto no_trace_out;
671 }
75d476e2
SM		 672 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
673 for (i = 0; i <= OP_max; ++i) {
e71f25b3 674 if (PL_op_exec_cnt[i])
147e3846 675 PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM		 676 }
677 /* Utility slot for easily doing little tracing experiments in the runloop: */
678 if (PL_op_exec_cnt[OP_max+1] != 0)
147e3846 679 PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]);
75d476e2 680 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 681 no_trace_out:
75d476e2
SM		 682#endif
683
684
16c91539 685 if (PL_threadhook(aTHX)) {
62375a60 686 /* Threads hook has vetoed further cleanup */
c301d606 687 PL_veto_cleanup = TRUE;
37038d91 688 return STATUS_EXIT;
62375a60
NIS		 689 }
690
2aa47728
NC		 691#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
692 if (destruct_level != 0) {
693 /* Fork here to create a child. Our child's job is to preserve the
694 state of scalars prior to destruction, so that we can instruct it
695 to dump any scalars that we later find have leaked.
696 There's no subtlety in this code - it assumes POSIX, and it doesn't
697 fail gracefully */
698 int fd[2];
699
700 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
701 perror("Debug leaking scalars socketpair failed");
702 abort();
703 }
704
705 child = fork();
706 if(child == -1) {
707 perror("Debug leaking scalars fork failed");
708 abort();
709 }
710 if (!child) {
711 /* We are the child */
3125a5a4
NC		 712 const int sock = fd[1];
713 const int debug_fd = PerlIO_fileno(Perl_debug_log);
714 int f;
808ad2d0
NC		 715 const char *where;
716 /* Our success message is an integer 0, and a char 0 */
b61433a9 717 static const char success[sizeof(int) + 1] = {0};
3125a5a4 718
2aa47728 719 close(fd[0]);
2aa47728 720
3125a5a4
NC		 721 /* We need to close all other file descriptors otherwise we end up
722 with interesting hangs, where the parent closes its end of a
723 pipe, and sits waiting for (another) child to terminate. Only
724 that child never terminates, because it never gets EOF, because
bf357333
NC		 725 we also have the far end of the pipe open. We even need to
726 close the debugging fd, because sometimes it happens to be one
727 end of a pipe, and a process is waiting on the other end for
728 EOF. Normally it would be closed at some point earlier in
729 destruction, but if we happen to cause the pipe to remain open,
730 EOF never occurs, and we get an infinite hang. Hence all the
731 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC		 732
733 f = sysconf(_SC_OPEN_MAX);
734 if(f < 0) {
808ad2d0
NC		 735 where = "sysconf failed";
736 goto abort;
3125a5a4
NC		 737 }
738 while (f--) {
739 if (f == sock)
740 continue;
3125a5a4
NC		 741 close(f);
742 }
743
2aa47728
NC		 744 while (1) {
745 SV *target;
bf357333
NC		 746 union control_un control;
747 struct msghdr msg;
748 struct iovec vec[1];
749 struct cmsghdr *cmptr;
750 ssize_t got;
751 int got_fd;
752
753 msg.msg_control = control.control;
754 msg.msg_controllen = sizeof(control.control);
755 /* We're a connected socket so we don't need a source */
756 msg.msg_name = NULL;
757 msg.msg_namelen = 0;
758 msg.msg_iov = vec;
c3caa5c3 759 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC		 760
761 vec[0].iov_base = (void*)&target;
762 vec[0].iov_len = sizeof(target);
763
764 got = recvmsg(sock, &msg, 0);
2aa47728
NC		 765
766 if(got == 0)
767 break;
768 if(got < 0) {
808ad2d0
NC		 769 where = "recv failed";
770 goto abort;
2aa47728
NC		 771 }
772 if(got < sizeof(target)) {
808ad2d0
NC		 773 where = "short recv";
774 goto abort;
2aa47728 775 }
bf357333 776
808ad2d0
NC		 777 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
778 where = "no cmsg";
779 goto abort;
780 }
781 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
782 where = "wrong cmsg_len";
783 goto abort;
784 }
785 if(cmptr->cmsg_level != SOL_SOCKET) {
786 where = "wrong cmsg_level";
787 goto abort;
788 }
789 if(cmptr->cmsg_type != SCM_RIGHTS) {
790 where = "wrong cmsg_type";
791 goto abort;
792 }
bf357333
NC		 793
794 got_fd = *(int*)CMSG_DATA(cmptr);
795 /* For our last little bit of trickery, put the file descriptor
796 back into Perl_debug_log, as if we never actually closed it
797 */
808ad2d0
NC		 798 if(got_fd != debug_fd) {
799 if (dup2(got_fd, debug_fd) == -1) {
800 where = "dup2";
801 goto abort;
802 }
803 }
2aa47728 804 sv_dump(target);
bf357333 805
2aa47728
NC		 806 PerlIO_flush(Perl_debug_log);
807
808ad2d0 808 got = write(sock, &success, sizeof(success));
2aa47728
NC		 809
810 if(got < 0) {
808ad2d0
NC		 811 where = "write failed";
812 goto abort;
2aa47728 813 }
808ad2d0
NC		 814 if(got < sizeof(success)) {
815 where = "short write";
816 goto abort;
2aa47728
NC		 817 }
818 }
819 _exit(0);
808ad2d0
NC		 820 abort:
821 {
822 int send_errno = errno;
823 unsigned char length = (unsigned char) strlen(where);
824 struct iovec failure[3] = {
825 {(void*)&send_errno, sizeof(send_errno)},
826 {&length, 1},
827 {(void*)where, length}
828 };
829 int got = writev(sock, failure, 3);
830 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
831 in the parent if we try to read from the socketpair after the
832 child has exited, even if there was data to read.
833 So sleep a bit to give the parent a fighting chance of
834 reading the data. */
835 sleep(2);
836 _exit((got == -1) ? errno : 0);
837 }
bf357333 838 /* End of child. */
2aa47728 839 }
41e4abd8 840 PL_dumper_fd = fd[0];
2aa47728
NC		 841 close(fd[1]);
842 }
843#endif
844
ff0cee69
PP		 845 /* We must account for everything. */
846
847 /* Destroy the main CV and syntax tree */
37e77c23
FC		 848 /* Set PL_curcop now, because destroying ops can cause new SVs
849 to be generated in Perl_pad_swipe, and when running with
850 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
851 op from which the filename structure member is copied. */
17fbfdf6 852 PL_curcop = &PL_compiling;
3280af22 853 if (PL_main_root) {
4e380990
DM		 854 /* ensure comppad/curpad to refer to main's pad */
855 if (CvPADLIST(PL_main_cv)) {
856 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 857 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 858 }
3280af22 859 op_free(PL_main_root);
5f66b61c 860 PL_main_root = NULL;
a0d0e21e 861 }
5f66b61c 862 PL_main_start = NULL;
aac9d523
DM		 863 /* note that PL_main_cv isn't usually actually freed at this point,
864 * due to the CvOUTSIDE refs from subs compiled within it. It will
865 * get freed once all the subs are freed in sv_clean_all(), for
866 * destruct_level > 0 */
3280af22 867 SvREFCNT_dec(PL_main_cv);
601f1833 868 PL_main_cv = NULL;
ca7b837b 869 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 870
13621cfb
NIS		 871 /* Tell PerlIO we are about to tear things apart in case
872 we have layers which are using resources that should
873 be cleaned up now.
874 */
875
876 PerlIO_destruct(aTHX);
877
ddf23d4a
SM		 878 /*
879 * Try to destruct global references. We do this first so that the
880 * destructors and destructees still exist. Some sv's might remain.
881 * Non-referenced objects are on their own.
882 */
883 sv_clean_objs();
8990e307 884
5cd24f17 885 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 886 SvREFCNT_dec(PL_warnhook);
a0714e2c 887 PL_warnhook = NULL;
3280af22 888 SvREFCNT_dec(PL_diehook);
a0714e2c 889 PL_diehook = NULL;
5cd24f17 890
4b556e6c 891 /* call exit list functions */
3280af22 892 while (PL_exitlistlen-- > 0)
acfe0abc 893 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 894
3280af22 895 Safefree(PL_exitlist);
4b556e6c 896
1c4916e5
CB		 897 PL_exitlist = NULL;
898 PL_exitlistlen = 0;
899
a3e6e81e
NC		 900 SvREFCNT_dec(PL_registered_mros);
901
551a8b83 902 /* jettison our possibly duplicated environment */
4b647fb0
DM		 903 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
904 * so we certainly shouldn't free it here
905 */
2f42fcb0 906#ifndef PERL_MICRO
4b647fb0 907#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 908 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS		 909#ifdef USE_ITHREADS
910 /* only main thread can free environ[0] contents */
911 && PL_curinterp == aTHX
912#endif
913 )
914 {
551a8b83
JH		 915 I32 i;
916
917 for (i = 0; environ[i]; i++)
4b420006 918 safesysfree(environ[i]);
0631ea03 919
4b420006
JH		 920 /* Must use safesysfree() when working with environ. */
921 safesysfree(environ);
551a8b83
JH		 922
923 environ = PL_origenviron;
924 }
925#endif
2f42fcb0 926#endif /* !PERL_MICRO */
551a8b83 927
30985c42
JH		 928 if (destruct_level == 0) {
929
930 DEBUG_P(debprofdump());
931
932#if defined(PERLIO_LAYERS)
933 /* No more IO - including error messages ! */
934 PerlIO_cleanup(aTHX);
935#endif
936
937 CopFILE_free(&PL_compiling);
30985c42
JH		 938
939 /* The exit() function will do everything that needs doing. */
940 return STATUS_EXIT;
941 }
942
9fa9f06b
KW		 943 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
944
5f8cb046
DM		 945#ifdef USE_ITHREADS
946 /* the syntax tree is shared between clones
947 * so op_free(PL_main_root) only ReREFCNT_dec's
948 * REGEXPs in the parent interpreter
949 * we need to manually ReREFCNT_dec for the clones
950 */
0547a729
DM		 951 {
952 I32 i = AvFILLp(PL_regex_padav);
953 SV **ary = AvARRAY(PL_regex_padav);
954
955 for (; i; i--) {
956 SvREFCNT_dec(ary[i]);
957 ary[i] = &PL_sv_undef;
958 }
959 }
5f8cb046
DM		 960#endif
961
0547a729 962
ad64d0ec 963 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB		 964 PL_stashcache = NULL;
965
5f05dabc
PP		 966 /* loosen bonds of global variables */
967
2f9285f8
DM		 968 /* XXX can PL_parser still be non-null here? */
969 if(PL_parser && PL_parser->rsfp) {
970 (void)PerlIO_close(PL_parser->rsfp);
971 PL_parser->rsfp = NULL;
8ebc5c01
PP		 972 }
973
84386e14
RGS		 974 if (PL_minus_F) {
975 Safefree(PL_splitstr);
976 PL_splitstr = NULL;
977 }
978
8ebc5c01 979 /* switches */
3280af22
NIS		 980 PL_minus_n = FALSE;
981 PL_minus_p = FALSE;
982 PL_minus_l = FALSE;
983 PL_minus_a = FALSE;
984 PL_minus_F = FALSE;
985 PL_doswitches = FALSE;
599cee73 986 PL_dowarn = G_WARN_OFF;
1a904fc8 987#ifdef PERL_SAWAMPERSAND
d3b97530 988 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 989#endif
3280af22
NIS		 990 PL_unsafe = FALSE;
991
992 Safefree(PL_inplace);
bd61b366 993 PL_inplace = NULL;
a7cb1f99 994 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 995
996 if (PL_e_script) {
997 SvREFCNT_dec(PL_e_script);
a0714e2c 998 PL_e_script = NULL;
8ebc5c01
PP		 999 }
1000
bf9cdc68
RG		 1001 PL_perldb = 0;
1002
8ebc5c01
PP		 1003 /* magical thingies */
1004
e23d9e2f
CS		 1005 SvREFCNT_dec(PL_ofsgv); /* *, */
1006 PL_ofsgv = NULL;
5f05dabc 1007
7889fe52 1008 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 1009 PL_ors_sv = NULL;
8ebc5c01 1010
3280af22 1011 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 1012 PL_rs = NULL;
dc92893f 1013
d33b2eba 1014 Safefree(PL_osname); /* $^O */
bd61b366 1015 PL_osname = NULL;
5f05dabc 1016
3280af22 1017 SvREFCNT_dec(PL_statname);
a0714e2c
SS		 1018 PL_statname = NULL;
1019 PL_statgv = NULL;
5f05dabc 1020
8ebc5c01
PP		 1021 /* defgv, aka *_ should be taken care of elsewhere */
1022
7d5ea4e7
GS		 1023 /* float buffer */
1024 Safefree(PL_efloatbuf);
bd61b366 1025 PL_efloatbuf = NULL;
7d5ea4e7
GS		 1026 PL_efloatsize = 0;
1027
8ebc5c01 1028 /* startup and shutdown function lists */
3280af22 1029 SvREFCNT_dec(PL_beginav);
5a837c8f 1030 SvREFCNT_dec(PL_beginav_save);
3280af22 1031 SvREFCNT_dec(PL_endav);
7d30b5c4 1032 SvREFCNT_dec(PL_checkav);
ece599bd 1033 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG		 1034 SvREFCNT_dec(PL_unitcheckav);
1035 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1036 SvREFCNT_dec(PL_initav);
7d49f689
NC		 1037 PL_beginav = NULL;
1038 PL_beginav_save = NULL;
1039 PL_endav = NULL;
1040 PL_checkav = NULL;
1041 PL_checkav_save = NULL;
3c10abe3
AG		 1042 PL_unitcheckav = NULL;
1043 PL_unitcheckav_save = NULL;
7d49f689 1044 PL_initav = NULL;
5618dfe8 1045
8ebc5c01 1046 /* shortcuts just get cleared */
a0714e2c
SS		 1047 PL_hintgv = NULL;
1048 PL_errgv = NULL;
a0714e2c
SS		 1049 PL_argvoutgv = NULL;
1050 PL_stdingv = NULL;
1051 PL_stderrgv = NULL;
1052 PL_last_in_gv = NULL;
a0714e2c
SS		 1053 PL_DBsingle = NULL;
1054 PL_DBtrace = NULL;
1055 PL_DBsignal = NULL;
a6d69523
TC		 1056 PL_DBsingle_iv = 0;
1057 PL_DBtrace_iv = 0;
1058 PL_DBsignal_iv = 0;
601f1833 1059 PL_DBcv = NULL;
7d49f689 1060 PL_dbargs = NULL;
5c284bb0 1061 PL_debstash = NULL;
8ebc5c01 1062
cf93a474 1063 SvREFCNT_dec(PL_envgv);
f03015cd 1064 SvREFCNT_dec(PL_incgv);
722fa0e9 1065 SvREFCNT_dec(PL_argvgv);
475b1e90 1066 SvREFCNT_dec(PL_replgv);
8cece913
FC		 1067 SvREFCNT_dec(PL_DBgv);
1068 SvREFCNT_dec(PL_DBline);
1069 SvREFCNT_dec(PL_DBsub);
cf93a474 1070 PL_envgv = NULL;
f03015cd 1071 PL_incgv = NULL;
722fa0e9 1072 PL_argvgv = NULL;
475b1e90 1073 PL_replgv = NULL;
8cece913
FC		 1074 PL_DBgv = NULL;
1075 PL_DBline = NULL;
1076 PL_DBsub = NULL;
1077
7a1c5554 1078 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1079 PL_argvout_stack = NULL;
8ebc5c01 1080
5c831c24 1081 SvREFCNT_dec(PL_modglobal);
5c284bb0 1082 PL_modglobal = NULL;
5c831c24 1083 SvREFCNT_dec(PL_preambleav);
7d49f689 1084 PL_preambleav = NULL;
5c831c24 1085 SvREFCNT_dec(PL_subname);
a0714e2c 1086 PL_subname = NULL;
ca0c25f6 1087#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1088 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1089 PL_pidstatus = NULL;
ca0c25f6 1090#endif
5c831c24 1091 SvREFCNT_dec(PL_toptarget);
a0714e2c 1092 PL_toptarget = NULL;
5c831c24 1093 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS		 1094 PL_bodytarget = NULL;
1095 PL_formtarget = NULL;
5c831c24 1096
d33b2eba 1097 /* free locale stuff */
b9582b6a 1098#ifdef USE_LOCALE_COLLATE
d33b2eba 1099 Safefree(PL_collation_name);
bd61b366 1100 PL_collation_name = NULL;
b9582b6a 1101#endif
d33b2eba 1102
b9582b6a 1103#ifdef USE_LOCALE_NUMERIC
d33b2eba 1104 Safefree(PL_numeric_name);
bd61b366 1105 PL_numeric_name = NULL;
a453c169 1106 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1107 PL_numeric_radix_sv = NULL;
b9582b6a 1108#endif
d33b2eba 1109
9c0b6888
KW		 1110 /* clear character classes */
1111 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1112 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1113 PL_utf8_swash_ptrs[i] = NULL;
1114 }
5c831c24
GS		 1115 SvREFCNT_dec(PL_utf8_mark);
1116 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1117 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1118 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1119 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 1120 SvREFCNT_dec(PL_utf8_idstart);
1121 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1122 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1123 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1124 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1125 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW		 1126 SvREFCNT_dec(PL_UpperLatin1);
1127 SvREFCNT_dec(PL_Latin1);
1128 SvREFCNT_dec(PL_NonL1NonFinalFold);
1129 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1130#ifdef USE_LOCALE_CTYPE
780fcc9f 1131 SvREFCNT_dec(PL_warn_locale);
5b7de470 1132#endif
a0714e2c
SS		 1133 PL_utf8_mark = NULL;
1134 PL_utf8_toupper = NULL;
1135 PL_utf8_totitle = NULL;
1136 PL_utf8_tolower = NULL;
1137 PL_utf8_tofold = NULL;
1138 PL_utf8_idstart = NULL;
1139 PL_utf8_idcont = NULL;
2726813d 1140 PL_utf8_foldclosures = NULL;
9fa9f06b 1141 PL_AboveLatin1 = NULL;
e0a1ff7a 1142 PL_InBitmap = NULL;
9fa9f06b 1143 PL_HasMultiCharFold = NULL;
5b7de470 1144#ifdef USE_LOCALE_CTYPE
780fcc9f 1145 PL_warn_locale = NULL;
5b7de470 1146#endif
9fa9f06b
KW		 1147 PL_Latin1 = NULL;
1148 PL_NonL1NonFinalFold = NULL;
1149 PL_UpperLatin1 = NULL;
86f72d56 1150 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW		 1151 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1152 PL_XPosix_ptrs[i] = NULL;
86f72d56 1153 }
64935bc6 1154 PL_GCB_invlist = NULL;
6b659339 1155 PL_LB_invlist = NULL;
06ae2722 1156 PL_SB_invlist = NULL;
ae3bb8ea 1157 PL_WB_invlist = NULL;
9e7ded3f 1158 PL_Assigned_invlist = NULL;
5c831c24 1159
971a9dd3 1160 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1161 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1162 PL_compiling.cop_warnings = NULL;
20439bc7
Z		 1163 cophh_free(CopHINTHASH_get(&PL_compiling));
1164 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1165 CopFILE_free(&PL_compiling);
5c831c24 1166
a0d0e21e 1167 /* Prepare to destruct main symbol table. */
5f05dabc 1168
3280af22 1169 hv = PL_defstash;
ca556bcd 1170 /* break ref loop *:: <=> %:: */
854da30f 1171 (void)hv_deletes(hv, "main::", G_DISCARD);
3280af22 1172 PL_defstash = 0;
a0d0e21e 1173 SvREFCNT_dec(hv);
5c831c24 1174 SvREFCNT_dec(PL_curstname);
a0714e2c 1175 PL_curstname = NULL;
a0d0e21e 1176
5a844595
GS		 1177 /* clear queued errors */
1178 SvREFCNT_dec(PL_errors);
a0714e2c 1179 PL_errors = NULL;
5a844595 1180
dd69841b
BB		 1181 SvREFCNT_dec(PL_isarev);
1182
a0d0e21e 1183 FREETMPS;
9b387841 1184 if (destruct_level >= 2) {
3280af22 1185 if (PL_scopestack_ix != 0)
9b387841
NC		 1186 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1187 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1188 (long)PL_scopestack_ix);
3280af22 1189 if (PL_savestack_ix != 0)
9b387841
NC		 1190 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1191 "Unbalanced saves: %ld more saves than restores\n",
1192 (long)PL_savestack_ix);
3280af22 1193 if (PL_tmps_floor != -1)
9b387841
NC		 1194 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1195 (long)PL_tmps_floor + 1);
a0d0e21e 1196 if (cxstack_ix != -1)
9b387841
NC		 1197 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1198 (long)cxstack_ix + 1);
a0d0e21e 1199 }
8990e307 1200
0547a729
DM		 1201#ifdef USE_ITHREADS
1202 SvREFCNT_dec(PL_regex_padav);
1203 PL_regex_padav = NULL;
1204 PL_regex_pad = NULL;
1205#endif
1206
776df701 1207#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH		 1208 /* the entries in this list are allocated via SV PVX's, so get freed
1209 * in sv_clean_all */
1210 Safefree(PL_my_cxt_list);
776df701 1211#endif
57bb2458 1212
8990e307 1213 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH		 1214
1215 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1216 while (sv_clean_all() > 2)
5226ed68
JH		 1217 ;
1218
23083432
FC		 1219#ifdef USE_ITHREADS
1220 Safefree(PL_stashpad); /* must come after sv_clean_all */
1221#endif
1222
d4777f27
GS		 1223 AvREAL_off(PL_fdpid); /* no surviving entries */
1224 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1225 PL_fdpid = NULL;
d33b2eba 1226
6c644e78
GS		 1227#ifdef HAVE_INTERP_INTERN
1228 sys_intern_clear();
1229#endif
1230
a38ab475
RZ		 1231 /* constant strings */
1232 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1233 SvREFCNT_dec(PL_sv_consts[i]);
1234 PL_sv_consts[i] = NULL;
1235 }
1236
6e72f9df
PP		 1237 /* Destruct the global string table. */
1238 {
1239 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1240 * so that sv_free() won't fail on them.
80459961
NC		 1241 * Now that the global string table is using a single hunk of memory
1242 * for both HE and HEK, we either need to explicitly unshare it the
1243 * correct way, or actually free things here.
6e72f9df 1244 */
80459961
NC		 1245 I32 riter = 0;
1246 const I32 max = HvMAX(PL_strtab);
c4420975 1247 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC		 1248 HE *hent = array[0];
1249
6e72f9df 1250 for (;;) {
0453d815 1251 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1252 HE * const next = HeNEXT(hent);
9014280d 1253 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1254 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1255 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC		 1256 Safefree(hent);
1257 hent = next;
6e72f9df
PP		 1258 }
1259 if (!hent) {
1260 if (++riter > max)
1261 break;
1262 hent = array[riter];
1263 }
1264 }
80459961
NC		 1265
1266 Safefree(array);
1267 HvARRAY(PL_strtab) = 0;
1268 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1269 }
3280af22 1270 SvREFCNT_dec(PL_strtab);
6e72f9df 1271
e652bb2f 1272#ifdef USE_ITHREADS
c21d1a0f 1273 /* free the pointer tables used for cloning */
a0739874 1274 ptr_table_free(PL_ptr_table);
bf9cdc68 1275 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1276#endif
a0739874 1277
d33b2eba
GS		 1278 /* free special SVs */
1279
1280 SvREFCNT(&PL_sv_yes) = 0;
1281 sv_clear(&PL_sv_yes);
1282 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1283 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 1284
1285 SvREFCNT(&PL_sv_no) = 0;
1286 sv_clear(&PL_sv_no);
1287 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1288 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1289
9f375a43
DM		 1290 {
1291 int i;
1292 for (i=0; i<=2; i++) {
1293 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1294 sv_clear(PERL_DEBUG_PAD(i));
1295 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1296 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1297 }
1298 }
1299
0453d815 1300 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1301 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1302
eba0f806
DM		 1303#ifdef DEBUG_LEAKING_SCALARS
1304 if (PL_sv_count != 0) {
1305 SV* sva;
1306 SV* sv;
eb578fdb 1307 SV* svend;
eba0f806 1308
ad64d0ec 1309 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM		 1310 svend = &sva[SvREFCNT(sva)];
1311 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1312 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1313 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1314 " flags=0x%"UVxf
fd0854ff 1315 " refcnt=%"UVuf pTHX__FORMAT "\n"
147e3846
KW		 1316 "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");"
1317 "serial %" UVuf "\n",
574b8821
NC		 1318 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1319 pTHX__VALUE,
fd0854ff
DM		 1320 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1321 sv->sv_debug_line,
1322 sv->sv_debug_inpad ? "for" : "by",
1323 sv->sv_debug_optype ?
1324 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1325 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1326 sv->sv_debug_serial
fd0854ff 1327 );
2aa47728 1328#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1329 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1330#endif
eba0f806
DM		 1331 }
1332 }
1333 }
1334 }
2aa47728
NC		 1335#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1336 {
1337 int status;
1338 fd_set rset;
1339 /* Wait for up to 4 seconds for child to terminate.
1340 This seems to be the least effort way of timing out on reaping
1341 its exit status. */
1342 struct timeval waitfor = {4, 0};
41e4abd8 1343 int sock = PL_dumper_fd;
2aa47728
NC		 1344
1345 shutdown(sock, 1);
1346 FD_ZERO(&rset);
1347 FD_SET(sock, &rset);
1348 select(sock + 1, &rset, NULL, NULL, &waitfor);
1349 waitpid(child, &status, WNOHANG);
1350 close(sock);
1351 }
1352#endif
eba0f806 1353#endif
77abb4c6
NC		 1354#ifdef DEBUG_LEAKING_SCALARS_ABORT
1355 if (PL_sv_count)
1356 abort();
1357#endif
bf9cdc68 1358 PL_sv_count = 0;
eba0f806 1359
56a2bab7 1360#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 1361 /* No more IO - including error messages ! */
1362 PerlIO_cleanup(aTHX);
1363#endif
1364
9f4bd222 1365 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1366 as currently layers use it rather than NULL as a marker
9f4bd222
NIS		 1367 for no arg - and will try and SvREFCNT_dec it.
1368 */
1369 SvREFCNT(&PL_sv_undef) = 0;
1370 SvREADONLY_off(&PL_sv_undef);
1371
3280af22 1372 Safefree(PL_origfilename);
bd61b366 1373 PL_origfilename = NULL;
43c5f42d 1374 Safefree(PL_reg_curpm);
dd28f7bb 1375 free_tied_hv_pool();
3280af22 1376 Safefree(PL_op_mask);
cf36064f 1377 Safefree(PL_psig_name);
bf9cdc68 1378 PL_psig_name = (SV**)NULL;
d525a7b2 1379 PL_psig_ptr = (SV**)NULL;
31c91b43
LR		 1380 {
1381 /* We need to NULL PL_psig_pend first, so that
1382 signal handlers know not to use it */
1383 int *psig_save = PL_psig_pend;
1384 PL_psig_pend = (int*)NULL;
1385 Safefree(psig_save);
1386 }
6e72f9df 1387 nuke_stacks();
284167a5
SM		 1388 TAINTING_set(FALSE);
1389 TAINT_WARN_set(FALSE);
3280af22 1390 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1391
a0d0e21e 1392 DEBUG_P(debprofdump());
d33b2eba 1393
b173165c
FC		 1394 PL_debug = 0;
1395
e5dd39fc 1396#ifdef USE_REENTRANT_API
10bc17b6 1397 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 1398#endif
1399
a24da70b
NC		 1400 /* These all point to HVs that are about to be blown away.
1401 Code in core and on CPAN assumes that if the interpreter is re-started
1402 that they will be cleanly NULL or pointing to a valid HV. */
1403 PL_custom_op_names = NULL;
1404 PL_custom_op_descs = NULL;
1405 PL_custom_ops = NULL;
1406
612f20c3
GS		 1407 sv_free_arenas();
1408
5d9a96ca
DM		 1409 while (PL_regmatch_slab) {
1410 regmatch_slab *s = PL_regmatch_slab;
1411 PL_regmatch_slab = PL_regmatch_slab->next;
1412 Safefree(s);
1413 }
1414
fc36a67e
PP		 1415 /* As the absolutely last thing, free the non-arena SV for mess() */
1416
3280af22 1417 if (PL_mess_sv) {
f350b448
NC		 1418 /* we know that type == SVt_PVMG */
1419
9c63abab 1420 /* it could have accumulated taint magic */
f350b448
NC		 1421 MAGIC* mg;
1422 MAGIC* moremagic;
1423 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1424 moremagic = mg->mg_moremagic;
1425 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1426 && mg->mg_len >= 0)
1427 Safefree(mg->mg_ptr);
1428 Safefree(mg);
9c63abab 1429 }
f350b448 1430
fc36a67e 1431 /* we know that type >= SVt_PV */
8bd4d4c5 1432 SvPV_free(PL_mess_sv);
3280af22
NIS		 1433 Safefree(SvANY(PL_mess_sv));
1434 Safefree(PL_mess_sv);
a0714e2c 1435 PL_mess_sv = NULL;
fc36a67e 1436 }
37038d91 1437 return STATUS_EXIT;
79072805
LW		 1438}
1439
954c1994
GS		 1440/*
1441=for apidoc perl_free
1442
1443Releases a Perl interpreter. See L<perlembed>.
1444
1445=cut
1446*/
1447
79072805 1448void
0cb96387 1449perl_free(pTHXx)
79072805 1450{
5174512c
NC		 1451 dVAR;
1452
7918f24d
NC		 1453 PERL_ARGS_ASSERT_PERL_FREE;
1454
c301d606
DM		 1455 if (PL_veto_cleanup)
1456 return;
1457
7cb608b5 1458#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM		 1459 {
1460 /*
1461 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1462 * value as we're probably hunting memory leaks then
1463 */
36e77d41 1464 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1465 const U32 old_debug = PL_debug;
55ef9aae
MHM		 1466 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1467 thread at thread exit. */
4fd0a9b8
NC		 1468 if (DEBUG_m_TEST) {
1469 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1470 "free this thread's memory\n");
1471 PL_debug &= ~ DEBUG_m_FLAG;
1472 }
6edcbed6
DD		 1473 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1474 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1475 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1476 safesysfree(ptr);
1477 }
4fd0a9b8 1478 PL_debug = old_debug;
55ef9aae
MHM		 1479 }
1480 }
7cb608b5
NC		 1481#endif
1482
acfe0abc 1483#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1484# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1485 {
acfe0abc 1486# ifdef NETWARE
7af12a34 1487 void *host = nw_internal_host;
7af12a34 1488 PerlMem_free(aTHXx);
7af12a34 1489 nw_delete_internal_host(host);
acfe0abc 1490# else
bdb50480
NC		 1491 void *host = w32_internal_host;
1492 PerlMem_free(aTHXx);
7af12a34 1493 win32_delete_internal_host(host);
acfe0abc 1494# endif
7af12a34 1495 }
1c0ca838
GS		 1496# else
1497 PerlMem_free(aTHXx);
1498# endif
acfe0abc
GS		 1499#else
1500 PerlMem_free(aTHXx);
76e3520e 1501#endif
79072805
LW		 1502}
1503
b7f7fff6 1504#if defined(USE_ITHREADS)
aebd1ac7
GA		 1505/* provide destructors to clean up the thread key when libperl is unloaded */
1506#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1507
826955bd 1508#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1509#pragma fini "perl_fini"
666ad1ec
GA		 1510#elif defined(__sun) && !defined(__GNUC__)
1511#pragma fini (perl_fini)
aebd1ac7
GA		 1512#endif
1513
0dbb1585
AL		 1514static void
1515#if defined(__GNUC__)
1516__attribute__((destructor))
aebd1ac7 1517#endif
de009b76 1518perl_fini(void)
aebd1ac7 1519{
27da23d5 1520 dVAR;
5c64bffd
NC		 1521 if (
1522#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1523 my_vars &&
1524#endif
1525 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA		 1526 FREE_THREAD_KEY;
1527}
1528
1529#endif /* WIN32 */
1530#endif /* THREADS */
1531
4b556e6c 1532void
864dbfa3 1533Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1534{
3280af22
NIS		 1535 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1536 PL_exitlist[PL_exitlistlen].fn = fn;
1537 PL_exitlist[PL_exitlistlen].ptr = ptr;
1538 ++PL_exitlistlen;
4b556e6c
JD		 1539}
1540
954c1994
GS		 1541/*
1542=for apidoc perl_parse
1543
1544Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1545
1546=cut
1547*/
1548
03d9f026
FC		 1549#define SET_CURSTASH(newstash) \
1550 if (PL_curstash != newstash) { \
1551 SvREFCNT_dec(PL_curstash); \
1552 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1553 }
1554
79072805 1555int
0cb96387 1556perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1557{
27da23d5 1558 dVAR;
6224f72b 1559 I32 oldscope;
6224f72b 1560 int ret;
db36c5a1 1561 dJMPENV;
8d063cd8 1562
7918f24d
NC		 1563 PERL_ARGS_ASSERT_PERL_PARSE;
1564#ifndef MULTIPLICITY
ed6c66dd 1565 PERL_UNUSED_ARG(my_perl);
7918f24d 1566#endif
eba287cb 1567#if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG)
b0891165 1568 {
7dc86639
YO		 1569 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1570
22ff3130 1571 if (s && strEQ(s, "1")) {
25c1b134
TC		 1572 const unsigned char *seed= PERL_HASH_SEED;
1573 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO		 1574 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1575 while (seed < seed_end) {
1576 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1577 }
6a5b4183
YO		 1578#ifdef PERL_HASH_RANDOMIZE_KEYS
1579 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1580 PL_HASH_RAND_BITS_ENABLED,
1581 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1582#endif
7dc86639
YO		 1583 PerlIO_printf(Perl_debug_log, "\n");
1584 }
b0891165 1585 }
eba287cb 1586#endif /* #if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) ... */
43238333 1587
ea34f6bd 1588#ifdef __amigaos4__
43238333
AB		 1589 {
1590 struct NameTranslationInfo nti;
1591 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1592 }
1593#endif
1594
3280af22 1595 PL_origargc = argc;
e2975953 1596 PL_origargv = argv;
a0d0e21e 1597
a2722ac9
GA		 1598 if (PL_origalen != 0) {
1599 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1600 }
1601 else {
3cb9023d
JH		 1602 /* Set PL_origalen be the sum of the contiguous argv[]
1603 * elements plus the size of the env in case that it is
e9137a8e 1604 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1605 * as the maximum modifiable length of $0. In the worst case
1606 * the area we are able to modify is limited to the size of
43c32782 1607 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1608 * --jhi */
e1ec3a88 1609 const char *s = NULL;
b7249aaf 1610 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1611 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1612 const UV aligned =
43c32782
JH		 1613 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1614
1615 /* See if all the arguments are contiguous in memory. Note
1616 * that 'contiguous' is a loose term because some platforms
1617 * align the argv[] and the envp[]. If the arguments look
1618 * like non-aligned, assume that they are 'strictly' or
1619 * 'traditionally' contiguous. If the arguments look like
1620 * aligned, we just check that they are within aligned
1621 * PTRSIZE bytes. As long as no system has something bizarre
1622 * like the argv[] interleaved with some other data, we are
1623 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb 1624 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
19742f39 1625 int i;
c8941eeb
JH		 1626 while (*s) s++;
1627 for (i = 1; i < PL_origargc; i++) {
1628 if ((PL_origargv[i] == s + 1
43c32782 1629#ifdef OS2
c8941eeb 1630 || PL_origargv[i] == s + 2
43c32782 1631#endif
c8941eeb
JH		 1632 )
1633 ||
1634 (aligned &&
1635 (PL_origargv[i] > s &&
1636 PL_origargv[i] <=
1637 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1638 )
1639 {
1640 s = PL_origargv[i];
1641 while (*s) s++;
1642 }
1643 else
1644 break;
54bfe034 1645 }
54bfe034 1646 }
a4a109c2
JD		 1647
1648#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1649 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1650 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1651 if ((PL_origenviron[0] == s + 1)
43c32782
JH		 1652 ||
1653 (aligned &&
1654 (PL_origenviron[0] > s &&
1655 PL_origenviron[0] <=
1656 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1657 )
1658 {
19742f39 1659 int i;
9d419b5f 1660#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH		 1661 s = PL_origenviron[0];
1662 while (*s) s++;
1663#endif
bd61b366 1664 my_setenv("NoNe SuCh", NULL);
43c32782
JH		 1665 /* Force copy of environment. */
1666 for (i = 1; PL_origenviron[i]; i++) {
1667 if (PL_origenviron[i] == s + 1
1668 ||
1669 (aligned &&
1670 (PL_origenviron[i] > s &&
1671 PL_origenviron[i] <=
1672 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1673 )
1674 {
1675 s = PL_origenviron[i];
1676 while (*s) s++;
1677 }
1678 else
1679 break;
54bfe034 1680 }
43c32782 1681 }
54bfe034 1682 }
a4a109c2
JD		 1683#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1684
2d2af554 1685 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH		 1686 }
1687
3280af22 1688 if (PL_do_undump) {
a0d0e21e
LW		 1689
1690 /* Come here if running an undumped a.out. */
1691
3280af22
NIS		 1692 PL_origfilename = savepv(argv[0]);
1693 PL_do_undump = FALSE;
a0d0e21e 1694 cxstack_ix = -1; /* start label stack again */
748a9306 1695 init_ids();
284167a5 1696 assert (!TAINT_get);
b7975bdd 1697 TAINT;
e2051532 1698 set_caret_X();
b7975bdd 1699 TAINT_NOT;
a0d0e21e
LW		 1700 init_postdump_symbols(argc,argv,env);
1701 return 0;
1702 }
1703
3280af22 1704 if (PL_main_root) {
3280af22 1705 op_free(PL_main_root);
5f66b61c 1706 PL_main_root = NULL;
ff0cee69 1707 }
5f66b61c 1708 PL_main_start = NULL;
3280af22 1709 SvREFCNT_dec(PL_main_cv);
601f1833 1710 PL_main_cv = NULL;
79072805 1711
3280af22
NIS		 1712 time(&PL_basetime);
1713 oldscope = PL_scopestack_ix;
599cee73 1714 PL_dowarn = G_WARN_OFF;
f86702cc 1715
14dd3ad8 1716 JMPENV_PUSH(ret);
6224f72b 1717 switch (ret) {
312caa8e 1718 case 0:
14dd3ad8 1719 parse_body(env,xsinit);
9ebf26ad 1720 if (PL_unitcheckav) {
3c10abe3 1721 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1722 }
1723 if (PL_checkav) {
ca7b837b 1724 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1725 call_list(oldscope, PL_checkav);
9ebf26ad 1726 }
14dd3ad8
GS		 1727 ret = 0;
1728 break;
6224f72b
GS		 1729 case 1:
1730 STATUS_ALL_FAILURE;
924ba076 1731 /* FALLTHROUGH */
6224f72b
GS		 1732 case 2:
1733 /* my_exit() was called */
3280af22 1734 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1735 LEAVE;
1736 FREETMPS;
03d9f026 1737 SET_CURSTASH(PL_defstash);
9ebf26ad 1738 if (PL_unitcheckav) {
3c10abe3 1739 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1740 }
1741 if (PL_checkav) {
ca7b837b 1742 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1743 call_list(oldscope, PL_checkav);
9ebf26ad 1744 }
37038d91 1745 ret = STATUS_EXIT;
14dd3ad8 1746 break;
6224f72b 1747 case 3:
bf49b057 1748 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1749 ret = 1;
1750 break;
6224f72b 1751 }
14dd3ad8
GS		 1752 JMPENV_POP;
1753 return ret;
1754}
1755
4a5df386
NC		 1756/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1757 miniperl, and we need to see those flags reflected in the values here. */
1758
1759/* What this returns is subject to change. Use the public interface in Config.
1760 */
1761static void
1762S_Internals_V(pTHX_ CV *cv)
1763{
1764 dXSARGS;
1765#ifdef LOCAL_PATCH_COUNT
1766 const int local_patch_count = LOCAL_PATCH_COUNT;
1767#else
1768 const int local_patch_count = 0;
1769#endif
2dc296d2 1770 const int entries = 3 + local_patch_count;
4a5df386 1771 int i;
fe1c5936 1772 static const char non_bincompat_options[] =
4a5df386
NC		 1773# ifdef DEBUGGING
1774 " DEBUGGING"
1775# endif
1776# ifdef NO_MATHOMS
0d311fbe 1777 " NO_MATHOMS"
4a5df386 1778# endif
59b86f4b
DM		 1779# ifdef NO_HASH_SEED
1780 " NO_HASH_SEED"
1781# endif
3b0e4ee2
MB		 1782# ifdef NO_TAINT_SUPPORT
1783 " NO_TAINT_SUPPORT"
1784# endif
cb26ef7a
MB		 1785# ifdef PERL_BOOL_AS_CHAR
1786 " PERL_BOOL_AS_CHAR"
1787# endif
93c10d60
FC		 1788# ifdef PERL_COPY_ON_WRITE
1789 " PERL_COPY_ON_WRITE"
1790# endif
4a5df386
NC		 1791# ifdef PERL_DISABLE_PMC
1792 " PERL_DISABLE_PMC"
1793# endif
1794# ifdef PERL_DONT_CREATE_GVSV
1795 " PERL_DONT_CREATE_GVSV"
1796# endif
9a044a43
NC		 1797# ifdef PERL_EXTERNAL_GLOB
1798 " PERL_EXTERNAL_GLOB"
1799# endif
59b86f4b
DM		 1800# ifdef PERL_HASH_FUNC_SIPHASH
1801 " PERL_HASH_FUNC_SIPHASH"
1802# endif
1803# ifdef PERL_HASH_FUNC_SDBM
1804 " PERL_HASH_FUNC_SDBM"
1805# endif
1806# ifdef PERL_HASH_FUNC_DJB2
1807 " PERL_HASH_FUNC_DJB2"
1808# endif
1809# ifdef PERL_HASH_FUNC_SUPERFAST
1810 " PERL_HASH_FUNC_SUPERFAST"
1811# endif
1812# ifdef PERL_HASH_FUNC_MURMUR3
1813 " PERL_HASH_FUNC_MURMUR3"
1814# endif
1815# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1816 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1817# endif
1818# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1819 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1820# endif
1821# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1822 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1823# endif
4a5df386
NC		 1824# ifdef PERL_IS_MINIPERL
1825 " PERL_IS_MINIPERL"
1826# endif
1827# ifdef PERL_MALLOC_WRAP
1828 " PERL_MALLOC_WRAP"
1829# endif
1830# ifdef PERL_MEM_LOG
1831 " PERL_MEM_LOG"
1832# endif
1833# ifdef PERL_MEM_LOG_NOIMPL
1834 " PERL_MEM_LOG_NOIMPL"
1835# endif
4e499636
DM		 1836# ifdef PERL_OP_PARENT
1837 " PERL_OP_PARENT"
1838# endif
59b86f4b
DM		 1839# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1840 " PERL_PERTURB_KEYS_DETERMINISTIC"
1841# endif
1842# ifdef PERL_PERTURB_KEYS_DISABLED
1843 " PERL_PERTURB_KEYS_DISABLED"
1844# endif
1845# ifdef PERL_PERTURB_KEYS_RANDOM
1846 " PERL_PERTURB_KEYS_RANDOM"
1847# endif
c3cf41ec
NC		 1848# ifdef PERL_PRESERVE_IVUV
1849 " PERL_PRESERVE_IVUV"
1850# endif
c051e30b
NC		 1851# ifdef PERL_RELOCATABLE_INCPUSH
1852 " PERL_RELOCATABLE_INCPUSH"
1853# endif
4a5df386
NC		 1854# ifdef PERL_USE_DEVEL
1855 " PERL_USE_DEVEL"
1856# endif
1857# ifdef PERL_USE_SAFE_PUTENV
1858 " PERL_USE_SAFE_PUTENV"
1859# endif
102b7877
YO		 1860# ifdef SILENT_NO_TAINT_SUPPORT
1861 " SILENT_NO_TAINT_SUPPORT"
1862# endif
a3749cf3
NC		 1863# ifdef UNLINK_ALL_VERSIONS
1864 " UNLINK_ALL_VERSIONS"
1865# endif
de618ee4
NC		 1866# ifdef USE_ATTRIBUTES_FOR_PERLIO
1867 " USE_ATTRIBUTES_FOR_PERLIO"
1868# endif
4a5df386
NC		 1869# ifdef USE_FAST_STDIO
1870 " USE_FAST_STDIO"
1871# endif
eba287cb
YO		 1872# ifdef USE_HASH_SEED_EXPLICIT
1873 " USE_HASH_SEED_EXPLICIT"
1874# endif
98548bdf
NC		 1875# ifdef USE_LOCALE
1876 " USE_LOCALE"
1877# endif
98548bdf
NC		 1878# ifdef USE_LOCALE_CTYPE
1879 " USE_LOCALE_CTYPE"
1880# endif
6937817d
DD		 1881# ifdef WIN32_NO_REGISTRY
1882 " USE_NO_REGISTRY"
1883# endif
5a8d8935
NC		 1884# ifdef USE_PERL_ATOF
1885 " USE_PERL_ATOF"
1886# endif
0d311fbe
NC		 1887# ifdef USE_SITECUSTOMIZE
1888 " USE_SITECUSTOMIZE"
1889# endif
4a5df386
NC		 1890 ;
1891 PERL_UNUSED_ARG(cv);
d3db1514 1892 PERL_UNUSED_VAR(items);
4a5df386
NC		 1893
1894 EXTEND(SP, entries);
1895
1896 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1897 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1898 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1899
6baa8dbd
NT		 1900#ifndef PERL_BUILD_DATE
1901# ifdef __DATE__
1902# ifdef __TIME__
1903# define PERL_BUILD_DATE __DATE__ " " __TIME__
1904# else
1905# define PERL_BUILD_DATE __DATE__
1906# endif
1907# endif
1908#endif
1909
1910#ifdef PERL_BUILD_DATE
4a5df386 1911 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1912 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1913 SVs_TEMP));
4a5df386
NC		 1914#else
1915 PUSHs(&PL_sv_undef);
1916#endif
1917
4a5df386
NC		 1918 for (i = 1; i <= local_patch_count; i++) {
1919 /* This will be an undef, if PL_localpatches[i] is NULL. */
1920 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1921 }
1922
1923 XSRETURN(entries);
1924}
1925
be71fc8f
NC		 1926#define INCPUSH_UNSHIFT 0x01
1927#define INCPUSH_ADD_OLD_VERS 0x02
1928#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1929#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1930#define INCPUSH_NOT_BASEDIR 0x10
1931#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC		 1932#define INCPUSH_ADD_SUB_DIRS \
1933 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1934
312caa8e 1935STATIC void *
14dd3ad8 1936S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1937{
27da23d5 1938 dVAR;
2f9285f8 1939 PerlIO *rsfp;
312caa8e 1940 int argc = PL_origargc;
8f42b153 1941 char **argv = PL_origargv;
e1ec3a88 1942 const char *scriptname = NULL;
402582ca 1943 bool dosearch = FALSE;
eb578fdb 1944 char c;
737c24fc 1945 bool doextract = FALSE;
bd61b366 1946 const char *cddir = NULL;
ab019eaa 1947#ifdef USE_SITECUSTOMIZE
20ef40cf 1948 bool minus_f = FALSE;
ab019eaa 1949#endif
95670bde 1950 SV *linestr_sv = NULL;
5486870f 1951 bool add_read_e_script = FALSE;
87606032 1952 U32 lex_start_flags = 0;
009d90df 1953
ca7b837b 1954 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1955
6224f72b 1956 init_main_stash();
54310121 1957
c7030b81
NC		 1958 {
1959 const char *s;
6224f72b
GS		 1960 for (argc--,argv++; argc > 0; argc--,argv++) {
1961 if (argv[0][0] != '-' || !argv[0][1])
1962 break;
6224f72b
GS		 1963 s = argv[0]+1;
1964 reswitch:
47f56822 1965 switch ((c = *s)) {
729a02f2 1966 case 'C':
1d5472a9
GS		 1967#ifndef PERL_STRICT_CR
1968 case '\r':
1969#endif
6224f72b
GS		 1970 case ' ':
1971 case '0':
1972 case 'F':
1973 case 'a':
1974 case 'c':
1975 case 'd':
1976 case 'D':
1977 case 'h':
1978 case 'i':
1979 case 'l':
1980 case 'M':
1981 case 'm':
1982 case 'n':
1983 case 'p':
1984 case 's':
1985 case 'u':
1986 case 'U':
1987 case 'v':
599cee73
PM		 1988 case 'W':
1989 case 'X':
6224f72b 1990 case 'w':
97bd5664 1991 if ((s = moreswitches(s)))
6224f72b
GS		 1992 goto reswitch;
1993 break;
33b78306 1994
1dbad523 1995 case 't':
dc6d7f5c 1996#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1997 /* silently ignore */
dc6d7f5c 1998#elif defined(NO_TAINT_SUPPORT)
3231f579 1999 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 2000 "Cowardly refusing to run with -t or -T flags");
2001#else
22f7c9c9 2002 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM		 2003 if( !TAINTING_get ) {
2004 TAINT_WARN_set(TRUE);
2005 TAINTING_set(TRUE);
317ea90d 2006 }
284167a5 2007#endif
317ea90d
MS		 2008 s++;
2009 goto reswitch;
6224f72b 2010 case 'T':
dc6d7f5c 2011#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2012 /* silently ignore */
dc6d7f5c 2013#elif defined(NO_TAINT_SUPPORT)
3231f579 2014 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 2015 "Cowardly refusing to run with -t or -T flags");
2016#else
22f7c9c9 2017 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM		 2018 TAINTING_set(TRUE);
2019 TAINT_WARN_set(FALSE);
2020#endif
6224f72b
GS		 2021 s++;
2022 goto reswitch;
f86702cc 2023
bc9b29db
RH		 2024 case 'E':
2025 PL_minus_E = TRUE;
924ba076 2026 /* FALLTHROUGH */
6224f72b 2027 case 'e':
f20b2998 2028 forbid_setid('e', FALSE);
3280af22 2029 if (!PL_e_script) {
396482e1 2030 PL_e_script = newSVpvs("");
5486870f 2031 add_read_e_script = TRUE;
6224f72b
GS		 2032 }
2033 if (*++s)
3280af22 2034 sv_catpv(PL_e_script, s);
6224f72b 2035 else if (argv[1]) {
3280af22 2036 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 2037 argc--,argv++;
2038 }
2039 else
47f56822 2040 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2041 sv_catpvs(PL_e_script, "\n");
6224f72b 2042 break;
afe37c7d 2043
20ef40cf 2044 case 'f':
f5542d3a 2045#ifdef USE_SITECUSTOMIZE
20ef40cf 2046 minus_f = TRUE;
f5542d3a 2047#endif
20ef40cf
GA		 2048 s++;
2049 goto reswitch;
2050
6224f72b 2051 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2052 forbid_setid('I', FALSE);
bd61b366 2053 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS		 2054 argc--,argv++;
2055 }
6224f72b 2056 if (s && *s) {
0df16ed7 2057 STRLEN len = strlen(s);
55b4bc1c 2058 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS		 2059 }
2060 else
a67e862a 2061 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2062 break;
6224f72b 2063 case 'S':
f20b2998 2064 forbid_setid('S', FALSE);
6224f72b
GS		 2065 dosearch = TRUE;
2066 s++;
2067 goto reswitch;
2068 case 'V':
7edfd0ef
NC		 2069 {
2070 SV *opts_prog;
2071
7edfd0ef 2072 if (*++s != ':') {
37ca4a5b 2073 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC		 2074 }
2075 else {
2076 ++s;
2077 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2078 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC		 2079 0, s, 0);
2080 s += strlen(s);
2081 }
37ca4a5b 2082 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC		 2083 /* don't look for script or read stdin */
2084 scriptname = BIT_BUCKET;
2085 goto reswitch;
6224f72b 2086 }
6224f72b 2087 case 'x':
737c24fc 2088 doextract = TRUE;
6224f72b 2089 s++;
304334da 2090 if (*s)
f4c556ac 2091 cddir = s;
6224f72b
GS		 2092 break;
2093 case 0:
2094 break;
2095 case '-':
2096 if (!*++s || isSPACE(*s)) {
2097 argc--,argv++;
2098 goto switch_end;
2099 }
ee8bc8b7
NC		 2100 /* catch use of gnu style long options.
2101 Both of these exit immediately. */
2102 if (strEQ(s, "version"))
2103 minus_v();
2104 if (strEQ(s, "help"))
2105 usage();
6224f72b 2106 s--;
924ba076 2107 /* FALLTHROUGH */
6224f72b 2108 default:
cea2e8a9 2109 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 2110 }
2111 }
c7030b81
NC		 2112 }
2113
6224f72b 2114 switch_end:
54310121 2115
c7030b81
NC		 2116 {
2117 char *s;
2118
f675dbe5
CB		 2119 if (
2120#ifndef SECURE_INTERNAL_GETENV
284167a5 2121 !TAINTING_get &&
f675dbe5 2122#endif
cf756827 2123 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2124 {
9e0b0d62
KW		 2125 /* s points to static memory in getenv(), which may be overwritten at
2126 * any time; use a mortal copy instead */
2127 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2128
74288ac8
GS		 2129 while (isSPACE(*s))
2130 s++;
317ea90d 2131 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2132#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2133 /* silently ignore */
dc6d7f5c 2134#elif defined(NO_TAINT_SUPPORT)
3231f579 2135 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 2136 "Cowardly refusing to run with -t or -T flags");
2137#else
22f7c9c9 2138 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM		 2139 TAINTING_set(TRUE);
2140 TAINT_WARN_set(FALSE);
2141#endif
317ea90d 2142 }
74288ac8 2143 else {
bd61b366 2144 char *popt_copy = NULL;
74288ac8 2145 while (s && *s) {
54913509 2146 const char *d;
74288ac8
GS		 2147 while (isSPACE(*s))
2148 s++;
2149 if (*s == '-') {
2150 s++;
2151 if (isSPACE(*s))
2152 continue;
2153 }
4ea8f8fb 2154 d = s;
74288ac8
GS		 2155 if (!*s)
2156 break;
2b622f1a 2157 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2158 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 2159 while (++s && *s) {
2160 if (isSPACE(*s)) {
cf756827 2161 if (!popt_copy) {
bfa6c418
NC		 2162 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2163 s = popt_copy + (s - d);
2164 d = popt_copy;
cf756827 2165 }
4ea8f8fb
MS		 2166 *s++ = '\0';
2167 break;
2168 }
2169 }
1c4db469 2170 if (*d == 't') {
dc6d7f5c 2171#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2172 /* silently ignore */
dc6d7f5c 2173#elif defined(NO_TAINT_SUPPORT)
3231f579 2174 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 2175 "Cowardly refusing to run with -t or -T flags");
2176#else
2177 if( !TAINTING_get) {
2178 TAINT_WARN_set(TRUE);
2179 TAINTING_set(TRUE);
317ea90d 2180 }
284167a5 2181#endif
1c4db469 2182 } else {
97bd5664 2183 moreswitches(d);
1c4db469 2184 }
6224f72b 2185 }
6224f72b
GS		 2186 }
2187 }
c7030b81 2188 }
a0d0e21e 2189
c29067d7
CH		 2190 /* Set $^X early so that it can be used for relocatable paths in @INC */
2191 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2192 assert (!TAINT_get);
c29067d7 2193 TAINT;
e2051532 2194 set_caret_X();
c29067d7
CH		 2195 TAINT_NOT;
2196
43c0c913 2197#if defined(USE_SITECUSTOMIZE)
20ef40cf 2198 if (!minus_f) {
43c0c913 2199 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC		 2200 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2201 ie a q() operator with a NUL byte as a the delimiter. This avoids
2202 problems with pathnames containing (say) ' */
43c0c913
NC		 2203# ifdef PERL_IS_MINIPERL
2204 AV *const inc = GvAV(PL_incgv);
2205 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2206
2207 if (inc0) {
15870c5c
NC		 2208 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2209 it should be reported immediately as a build failure. */
43c0c913
NC		 2210 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2211 Perl_newSVpvf(aTHX_
147e3846 2212 "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; "
af26e4f2
FC		 2213 "do {local $!; -f $f }"
2214 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2215 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC		 2216 }
2217# else
2218 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2219 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD		 2220 if (raw_sitelib) {
2221 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2222 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2223 INCPUSH_CAN_RELOCATE);
2224 const char *const sitelib = SvPVX(sitelib_sv);
2225 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2226 Perl_newSVpvf(aTHX_
2227 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF		 2228 0, SVfARG(sitelib), 0,
2229 0, SVfARG(sitelib), 0));
bac5c4fc
JD		 2230 assert (SvREFCNT(sitelib_sv) == 1);
2231 SvREFCNT_dec(sitelib_sv);
2232 }
43c0c913 2233# endif
20ef40cf
GA		 2234 }
2235#endif
2236
6224f72b
GS		 2237 if (!scriptname)
2238 scriptname = argv[0];
3280af22 2239 if (PL_e_script) {
6224f72b
GS		 2240 argc++,argv--;
2241 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2242 }
bd61b366 2243 else if (scriptname == NULL) {
6224f72b
GS		 2244#ifdef MSDOS
2245 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2246 moreswitches("h");
6224f72b
GS		 2247#endif
2248 scriptname = "-";
2249 }
2250
284167a5 2251 assert (!TAINT_get);
2cace6ac 2252 init_perllib();
6224f72b 2253
a52eba0e 2254 {
f20b2998 2255 bool suidscript = FALSE;
829372d3 2256
8d113837 2257 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC		 2258 if (!rsfp) {
2259 rsfp = PerlIO_stdin();
87606032 2260 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2261 }
6224f72b 2262
b24bc095 2263 validate_suid(rsfp);
6224f72b 2264
64ca3a65 2265#ifndef PERL_MICRO
a52eba0e
NC		 2266# if defined(SIGCHLD) || defined(SIGCLD)
2267 {
2268# ifndef SIGCHLD
2269# define SIGCHLD SIGCLD
2270# endif
2271 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2272 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC		 2273 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2274 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC		 2275 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2276 }
0b5b802d 2277 }
a52eba0e 2278# endif
64ca3a65 2279#endif
0b5b802d 2280
737c24fc 2281 if (doextract) {
faef540c 2282
f20b2998 2283 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC		 2284 setuid scripts. */
2285 forbid_setid('x', suidscript);
f20b2998 2286 /* Hence you can't get here if suidscript is true */
faef540c 2287
95670bde
NC		 2288 linestr_sv = newSV_type(SVt_PV);
2289 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2290 find_beginning(linestr_sv, rsfp);
a52eba0e
NC		 2291 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2292 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2293 }
f4c556ac 2294 }
6224f72b 2295
ea726b52 2296 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS		 2297 CvUNIQUE_on(PL_compcv);
2298
eacbb379 2299 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2300
dd69841b
BB		 2301 PL_isarev = newHV();
2302
0c4f7ff0 2303 boot_core_PerlIO();
6224f72b 2304 boot_core_UNIVERSAL();
e1a479c5 2305 boot_core_mro();
4a5df386 2306 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS		 2307
2308 if (xsinit)
acfe0abc 2309 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2310#ifndef PERL_MICRO
739a0b84 2311#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2312 init_os_extras();
6224f72b 2313#endif
64ca3a65 2314#endif
6224f72b 2315
29209bc5 2316#ifdef USE_SOCKS
1b9c9cf5
DH		 2317# ifdef HAS_SOCKS5_INIT
2318 socks5_init(argv[0]);
2319# else
29209bc5 2320 SOCKSinit(argv[0]);
1b9c9cf5 2321# endif
ac27b0f5 2322#endif
29209bc5 2323
6224f72b
GS		 2324 init_predump_symbols();
2325 /* init_postdump_symbols not currently designed to be called */
2326 /* more than once (ENV isn't cleared first, for example) */
2327 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2328 if (!PL_do_undump)
6224f72b
GS		 2329 init_postdump_symbols(argc,argv,env);
2330
27da23d5
JH		 2331 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2332 * or explicitly in some platforms.
73e1bd1a 2333 * PL_utf8locale is conditionally turned on by
085a54d9 2334 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2335 * look like the user wants to use UTF-8. */
a0fd4948 2336#if defined(__SYMBIAN32__)
27da23d5
JH		 2337 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2338#endif
e27b5b51 2339# ifndef PERL_IS_MINIPERL
06e66572
JH		 2340 if (PL_unicode) {
2341 /* Requires init_predump_symbols(). */
a05d7ebb 2342 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 2343 IO* io;
2344 PerlIO* fp;
2345 SV* sv;
2346
a05d7ebb 2347 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2348 * and the default open disciplines. */
a05d7ebb
JH		 2349 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2350 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2351 (fp = IoIFP(io)))
2352 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2353 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2354 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2355 (fp = IoOFP(io)))
2356 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2357 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2358 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2359 (fp = IoOFP(io)))
2360 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2361 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC		 2362 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2363 SVt_PV)))) {
a05d7ebb
JH		 2364 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2365 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2366 if (in) {
2367 if (out)
76f68e9b 2368 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2369 else
76f68e9b 2370 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH		 2371 }
2372 else if (out)
76f68e9b 2373 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH		 2374 SvSETMAGIC(sv);
2375 }
b310b053
JH		 2376 }
2377 }
e27b5b51 2378#endif
b310b053 2379
c7030b81
NC		 2380 {
2381 const char *s;
4ffa73a3
JH		 2382 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2383 if (strEQ(s, "unsafe"))
2384 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2385 else if (strEQ(s, "safe"))
2386 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2387 else
2388 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2389 }
c7030b81 2390 }
4ffa73a3 2391
81d86705 2392
87606032 2393 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2394 SvREFCNT_dec(linestr_sv);
95670bde 2395
219f7226 2396 PL_subname = newSVpvs("main");
6224f72b 2397
5486870f
DM		 2398 if (add_read_e_script)
2399 filter_add(read_e_script, NULL);
2400
6224f72b
GS		 2401 /* now parse the script */
2402
93189314 2403 SETERRNO(0,SS_NORMAL);
28ac2b49 2404 if (yyparse(GRAMPROG) || PL_parser->error_count) {
c77da5ff 2405 abort_execution("", PL_origfilename);
6224f72b 2406 }
57843af0 2407 CopLINE_set(PL_curcop, 0);
03d9f026 2408 SET_CURSTASH(PL_defstash);
3280af22
NIS		 2409 if (PL_e_script) {
2410 SvREFCNT_dec(PL_e_script);
a0714e2c 2411 PL_e_script = NULL;
6224f72b
GS		 2412 }
2413
3280af22 2414 if (PL_do_undump)
6224f72b
GS		 2415 my_unexec();
2416
57843af0
GS		 2417 if (isWARN_ONCE) {
2418 SAVECOPFILE(PL_curcop);
2419 SAVECOPLINE(PL_curcop);
3280af22 2420 gv_check(PL_defstash);
57843af0 2421 }
6224f72b
GS		 2422
2423 LEAVE;
2424 FREETMPS;
2425
2426#ifdef MYMALLOC
f6a607bc
RGS		 2427 {
2428 const char *s;
22ff3130
HS		 2429 UV uv;
2430 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2431 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2432 dump_mstats("after compilation:");
f6a607bc 2433 }
6224f72b
GS		 2434#endif
2435
2436 ENTER;
febb3a6d 2437 PL_restartjmpenv = NULL;
3280af22 2438 PL_restartop = 0;
312caa8e 2439 return NULL;
6224f72b
GS		 2440}
2441
954c1994
GS		 2442/*
2443=for apidoc perl_run
2444
2445Tells a Perl interpreter to run. See L<perlembed>.
2446
2447=cut
2448*/
2449
6224f72b 2450int
0cb96387 2451perl_run(pTHXx)
6224f72b 2452{
6224f72b 2453 I32 oldscope;
14dd3ad8 2454 int ret = 0;
db36c5a1 2455 dJMPENV;
6224f72b 2456
7918f24d
NC		 2457 PERL_ARGS_ASSERT_PERL_RUN;
2458#ifndef MULTIPLICITY
ed6c66dd 2459 PERL_UNUSED_ARG(my_perl);
7918f24d 2460#endif
9d4ba2ae 2461
3280af22 2462 oldscope = PL_scopestack_ix;
96e176bf
CL		 2463#ifdef VMS
2464 VMSISH_HUSHED = 0;
2465#endif
6224f72b 2466
14dd3ad8 2467 JMPENV_PUSH(ret);
6224f72b
GS		 2468 switch (ret) {
2469 case 1:
2470 cxstack_ix = -1; /* start context stack again */
312caa8e 2471 goto redo_body;
14dd3ad8 2472 case 0: /* normal completion */
14dd3ad8
GS		 2473 redo_body:
2474 run_body(oldscope);
924ba076 2475 /* FALLTHROUGH */
14dd3ad8 2476 case 2: /* my_exit() */
3280af22 2477 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 2478 LEAVE;
2479 FREETMPS;
03d9f026 2480 SET_CURSTASH(PL_defstash);
3a1ee7e8 2481 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2482 PL_endav && !PL_minus_c) {
ca7b837b 2483 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2484 call_list(oldscope, PL_endav);
9ebf26ad 2485 }
6224f72b
GS		 2486#ifdef MYMALLOC
2487 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2488 dump_mstats("after execution: ");
2489#endif
37038d91 2490 ret = STATUS_EXIT;
14dd3ad8 2491 break;
6224f72b 2492 case 3:
312caa8e
CS		 2493 if (PL_restartop) {
2494 POPSTACK_TO(PL_mainstack);
2495 goto redo_body;
6224f72b 2496 }
5637ef5b 2497 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2498 FREETMPS;
14dd3ad8
GS		 2499 ret = 1;
2500 break;
6224f72b
GS		 2501 }
2502
14dd3ad8
GS		 2503 JMPENV_POP;
2504 return ret;
312caa8e
CS		 2505}
2506
dd374669 2507STATIC void
14dd3ad8
GS		 2508S_run_body(pTHX_ I32 oldscope)
2509{
d3b97530
DM		 2510 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2511 PL_sawampersand ? "Enabling" : "Omitting",
2512 (unsigned int)(PL_sawampersand)));
6224f72b 2513
3280af22 2514 if (!PL_restartop) {
cf2782cd 2515#ifdef DEBUGGING
f0e3f042
CS		 2516 if (DEBUG_x_TEST || DEBUG_B_TEST)
2517 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC		 2518 if (!DEBUG_q_TEST)
2519 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2520#endif
6224f72b 2521
3280af22 2522 if (PL_minus_c) {
bf49b057 2523 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 2524 my_exit(0);
2525 }
3280af22 2526 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2527 PL_DBsingle_iv = 1;
9ebf26ad 2528 if (PL_initav) {
ca7b837b 2529 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2530 call_list(oldscope, PL_initav);
9ebf26ad 2531 }
f1fac472 2532#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC		 2533 if (PL_main_root && PL_main_root->op_slabbed)
2534 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2535#endif
6224f72b
GS		 2536 }
2537
2538 /* do it */
2539
ca7b837b 2540 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2541
3280af22 2542 if (PL_restartop) {
febb3a6d 2543 PL_restartjmpenv = NULL;
533c011a 2544 PL_op = PL_restartop;
3280af22 2545 PL_restartop = 0;
cea2e8a9 2546 CALLRUNOPS(aTHX);
6224f72b 2547 }
3280af22
NIS		 2548 else if (PL_main_start) {
2549 CvDEPTH(PL_main_cv) = 1;
533c011a 2550 PL_op = PL_main_start;
cea2e8a9 2551 CALLRUNOPS(aTHX);
6224f72b 2552 }
f6b3007c 2553 my_exit(0);
e5964223 2554 NOT_REACHED; /* NOTREACHED */
6224f72b
GS		 2555}
2556
954c1994 2557/*
ccfc67b7
JH		 2558=head1 SV Manipulation Functions
2559
954c1994
GS		 2560=for apidoc p||get_sv
2561
64ace3f8 2562Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2563C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC		 2564Perl variable does not exist then it will be created. If C<flags> is zero
2565and the variable does not exist then NULL is returned.
954c1994
GS		 2566
2567=cut
2568*/
2569
6224f72b 2570SV*
64ace3f8 2571Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS		 2572{
2573 GV *gv;
7918f24d
NC		 2574
2575 PERL_ARGS_ASSERT_GET_SV;
2576
64ace3f8 2577 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS		 2578 if (gv)
2579 return GvSV(gv);
a0714e2c 2580 return NULL;
6224f72b
GS		 2581}
2582
954c1994 2583/*
ccfc67b7
JH		 2584=head1 Array Manipulation Functions
2585
954c1994
GS		 2586=for apidoc p||get_av
2587
f0b90de1
SF		 2588Returns the AV of the specified Perl global or package array with the given
2589name (so it won't work on lexical variables). C<flags> are passed
72d33970 2590to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC		 2591Perl variable does not exist then it will be created. If C<flags> is zero
2592and the variable does not exist then NULL is returned.
954c1994 2593
f0b90de1
SF		 2594Perl equivalent: C<@{"$name"}>.
2595
954c1994
GS		 2596=cut
2597*/
2598
6224f72b 2599AV*
cbfd0a87 2600Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2601{
cbfd0a87 2602 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2603
2604 PERL_ARGS_ASSERT_GET_AV;
2605
cbfd0a87 2606 if (flags)
6224f72b
GS		 2607 return GvAVn(gv);
2608 if (gv)
2609 return GvAV(gv);
7d49f689 2610 return NULL;
6224f72b
GS		 2611}
2612
954c1994 2613/*
ccfc67b7
JH		 2614=head1 Hash Manipulation Functions
2615
954c1994
GS		 2616=for apidoc p||get_hv
2617
6673a63c 2618Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2619C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2620Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2621and the variable does not exist then C<NULL> is returned.
954c1994
GS		 2622
2623=cut
2624*/
2625
6224f72b 2626HV*
6673a63c 2627Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2628{
6673a63c 2629 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2630
2631 PERL_ARGS_ASSERT_GET_HV;
2632
6673a63c 2633 if (flags)
a0d0e21e
LW		 2634 return GvHVn(gv);
2635 if (gv)
2636 return GvHV(gv);
5c284bb0 2637 return NULL;
a0d0e21e
LW		 2638}
2639
954c1994 2640/*
ccfc67b7
JH		 2641=head1 CV Manipulation Functions
2642
780a5241
NC		 2643=for apidoc p||get_cvn_flags
2644
2645Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2646C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC		 2647exist then it will be declared (which has the same effect as saying
2648C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2649then NULL is returned.
2650
954c1994
GS		 2651=for apidoc p||get_cv
2652
780a5241 2653Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2654
2655=cut
2656*/
2657
a0d0e21e 2658CV*
780a5241 2659Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2660{
780a5241 2661 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC		 2662
2663 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2664
334dda80
FC		 2665 /* XXX this is probably not what they think they're getting.
2666 * It has the same effect as "sub name;", i.e. just a forward
2667 * declaration! */
780a5241 2668 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2669 return newSTUB(gv,0);
780a5241 2670 }
a0d0e21e 2671 if (gv)
8ebc5c01 2672 return GvCVu(gv);
601f1833 2673 return NULL;
a0d0e21e
LW		 2674}
2675
2c67934f
NC		 2676/* Nothing in core calls this now, but we can't replace it with a macro and
2677 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2678CV*
2679Perl_get_cv(pTHX_ const char *name, I32 flags)
2680{
7918f24d
NC		 2681 PERL_ARGS_ASSERT_GET_CV;
2682
780a5241
NC		 2683 return get_cvn_flags(name, strlen(name), flags);
2684}
2685
79072805
LW		 2686/* Be sure to refetch the stack pointer after calling these routines. */
2687
954c1994 2688/*
ccfc67b7
JH		 2689
2690=head1 Callback Functions
2691
954c1994
GS		 2692=for apidoc p||call_argv
2693
f0b90de1 2694Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2695with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2696L<perlcall>.
f0b90de1
SF		 2697
2698Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS		 2699
2700=cut
2701*/
2702
a0d0e21e 2703I32
5aaab254 2704Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2705
8ac85365
NIS		 2706 /* See G_* flags in cop.h */
2707 /* null terminated arg list */
8990e307 2708{
a0d0e21e 2709 dSP;
8990e307 2710
7918f24d
NC		 2711 PERL_ARGS_ASSERT_CALL_ARGV;
2712
924508f0 2713 PUSHMARK(SP);
3dc78631
DM		 2714 while (*argv) {
2715 mXPUSHs(newSVpv(*argv,0));
2716 argv++;
8990e307 2717 }
3dc78631 2718 PUTBACK;
864dbfa3 2719 return call_pv(sub_name, flags);
8990e307
LW		 2720}
2721
954c1994
GS		 2722/*
2723=for apidoc p||call_pv
2724
2725Performs a callback to the specified Perl sub. See L<perlcall>.
2726
2727=cut
2728*/
2729
a0d0e21e 2730I32
864dbfa3 2731Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2732 /* name of the subroutine */
2733 /* See G_* flags in cop.h */
a0d0e21e 2734{
7918f24d
NC		 2735 PERL_ARGS_ASSERT_CALL_PV;
2736
0da0e728 2737 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2738}
2739
954c1994
GS		 2740/*
2741=for apidoc p||call_method
2742
2743Performs a callback to the specified Perl method. The blessed object must
2744be on the stack. See L<perlcall>.
2745
2746=cut
2747*/
2748
a0d0e21e 2749I32
864dbfa3 2750Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2751 /* name of the subroutine */
2752 /* See G_* flags in cop.h */
a0d0e21e 2753{
46ca9bac 2754 STRLEN len;
c106c2be 2755 SV* sv;
7918f24d
NC		 2756 PERL_ARGS_ASSERT_CALL_METHOD;
2757
46ca9bac 2758 len = strlen(methname);
c106c2be
RZ		 2759 sv = flags & G_METHOD_NAMED
2760 ? sv_2mortal(newSVpvn_share(methname, len,0))
2761 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2762
c106c2be 2763 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW		 2764}
2765
2766/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2767/*
2768=for apidoc p||call_sv
2769
078e2213
TC		 2770Performs a callback to the Perl sub specified by the SV.
2771
7c0c544c 2772If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC		 2773SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2774or C<SvPV(sv)> will be used as the name of the sub to call.
2775
2776If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2777C<SvPV(sv)> will be used as the name of the method to call.
2778
2779If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2780the name of the method to call.
2781
2782Some other values are treated specially for internal use and should
2783not be depended on.
2784
2785See L<perlcall>.
954c1994
GS		 2786
2787=cut
2788*/
2789
a0d0e21e 2790I32
001d637e 2791Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2792 /* See G_* flags in cop.h */
a0d0e21e 2793{
5b434c73 2794 dVAR;
a0d0e21e 2795 LOGOP myop; /* fake syntax tree node */
b46e009d 2796 METHOP method_op;
aa689395 2797 I32 oldmark;
8ea43dc8 2798 VOL I32 retval = 0;
54310121 2799 bool oldcatch = CATCH_GET;
6224f72b 2800 int ret;
c4420975 2801 OP* const oldop = PL_op;
db36c5a1 2802 dJMPENV;
1e422769 2803
7918f24d
NC		 2804 PERL_ARGS_ASSERT_CALL_SV;
2805
a0d0e21e
LW		 2806 if (flags & G_DISCARD) {
2807 ENTER;
2808 SAVETMPS;
2809 }
2f8edad0
NC		 2810 if (!(flags & G_WANT)) {
2811 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2812 */
2813 flags |= G_SCALAR;
2814 }
a0d0e21e 2815
aa689395 2816 Zero(&myop, 1, LOGOP);
f51d4af5 2817 if (!(flags & G_NOARGS))
aa689395 2818 myop.op_flags |= OPf_STACKED;
4f911530 2819 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2820 SAVEOP();
533c011a 2821 PL_op = (OP*)&myop;
aa689395 2822
8c9009ad 2823 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD		 2824 dSP;
2825 EXTEND(SP, 1);
8c9009ad
DD		 2826 PUSHs(sv);
2827 PUTBACK;
5b434c73 2828 }
aa689395 2829 oldmark = TOPMARK;
a0d0e21e 2830
3280af22 2831 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2832 /* Handle first BEGIN of -d. */
3280af22 2833 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP		 2834 /* Try harder, since this may have been a sighandler, thus
2835 * curstash may be meaningless. */
ea726b52 2836 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2837 && !(flags & G_NODEBUG))
5ff48db8 2838 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2839
c106c2be 2840 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2841 Zero(&method_op, 1, METHOP);
2842 method_op.op_next = (OP*)&myop;
2843 PL_op = (OP*)&method_op;
c106c2be 2844 if ( flags & G_METHOD_NAMED ) {
b46e009d 2845 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2846 method_op.op_type = OP_METHOD_NAMED;
2847 method_op.op_u.op_meth_sv = sv;
c106c2be 2848 } else {
b46e009d 2849 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2850 method_op.op_type = OP_METHOD;
c106c2be
RZ		 2851 }
2852 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2853 myop.op_type = OP_ENTERSUB;
968b3946
GS		 2854 }
2855
312caa8e 2856 if (!(flags & G_EVAL)) {
0cdb2077 2857 CATCH_SET(TRUE);
d6f07c05 2858 CALL_BODY_SUB((OP*)&myop);
312caa8e 2859 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2860 CATCH_SET(oldcatch);
312caa8e
CS		 2861 }
2862 else {
8e90e786 2863 I32 old_cxix;
d78bda3d 2864 myop.op_other = (OP*)&myop;
101d6365 2865 (void)POPMARK;
8e90e786 2866 old_cxix = cxstack_ix;
274ed8ae 2867 create_eval_scope(NULL, flags|G_FAKINGEVAL);
c318a6ee 2868 INCMARK;
a0d0e21e 2869
14dd3ad8 2870 JMPENV_PUSH(ret);
edb2152a 2871
6224f72b
GS		 2872 switch (ret) {
2873 case 0:
14dd3ad8 2874 redo_body:
d6f07c05 2875 CALL_BODY_SUB((OP*)&myop);
312caa8e 2876 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2877 if (!(flags & G_KEEPERR)) {
ab69dbc2 2878 CLEAR_ERRSV();
8433848b 2879 }
a0d0e21e 2880 break;
6224f72b 2881 case 1:
f86702cc 2882 STATUS_ALL_FAILURE;
924ba076 2883 /* FALLTHROUGH */
6224f72b 2884 case 2:
a0d0e21e 2885 /* my_exit() was called */
03d9f026 2886 SET_CURSTASH(PL_defstash);
a0d0e21e 2887 FREETMPS;
14dd3ad8 2888 JMPENV_POP;
f86702cc 2889 my_exit_jump();
e5964223 2890 NOT_REACHED; /* NOTREACHED */
6224f72b 2891 case 3:
3280af22 2892 if (PL_restartop) {
febb3a6d 2893 PL_restartjmpenv = NULL;
533c011a 2894 PL_op = PL_restartop;
3280af22 2895 PL_restartop = 0;
312caa8e 2896 goto redo_body;
a0d0e21e 2897 }
3280af22 2898 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2899 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2900 retval = 0;
2901 else {
2902 retval = 1;
3280af22 2903 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2904 }
312caa8e 2905 break;
a0d0e21e 2906 }
a0d0e21e 2907
8e90e786
DM		 2908 /* if we croaked, depending on how we croaked the eval scope
2909 * may or may not have already been popped */
2910 if (cxstack_ix > old_cxix) {
2911 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2912 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2913 delete_eval_scope();
8e90e786 2914 }
14dd3ad8 2915 JMPENV_POP;
a0d0e21e 2916 }
1e422769 2917
a0d0e21e 2918 if (flags & G_DISCARD) {
3280af22 2919 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2920 retval = 0;
2921 FREETMPS;
2922 LEAVE;
2923 }
533c011a 2924 PL_op = oldop;
a0d0e21e
LW		 2925 return retval;
2926}
2927
6e72f9df 2928/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2929
954c1994
GS		 2930/*
2931=for apidoc p||eval_sv
2932
72d33970 2933Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2934as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS		 2935
2936=cut
2937*/
2938
a0d0e21e 2939I32
864dbfa3 2940Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2941
8ac85365 2942 /* See G_* flags in cop.h */
a0d0e21e 2943{
97aff369 2944 dVAR;
a0d0e21e 2945 UNOP myop; /* fake syntax tree node */
5b434c73 2946 VOL I32 oldmark;
8ea43dc8 2947 VOL I32 retval = 0;
6224f72b 2948 int ret;
c4420975 2949 OP* const oldop = PL_op;
db36c5a1 2950 dJMPENV;
84902520 2951
7918f24d
NC		 2952 PERL_ARGS_ASSERT_EVAL_SV;
2953
4633a7c4
LW		 2954 if (flags & G_DISCARD) {
2955 ENTER;
2956 SAVETMPS;
2957 }
2958
462e5cf6 2959 SAVEOP();
533c011a 2960 PL_op = (OP*)&myop;
5ff48db8 2961 Zero(&myop, 1, UNOP);
5b434c73
DD		 2962 {
2963 dSP;
2964 oldmark = SP - PL_stack_base;
2965 EXTEND(SP, 1);
2966 PUSHs(sv);
2967 PUTBACK;
2968 }
79072805 2969
4633a7c4
LW		 2970 if (!(flags & G_NOARGS))
2971 myop.op_flags = OPf_STACKED;
6e72f9df 2972 myop.op_type = OP_ENTEREVAL;
4f911530 2973 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP		 2974 if (flags & G_KEEPERR)
2975 myop.op_flags |= OPf_SPECIAL;
a1941760
DM		 2976
2977 if (flags & G_RE_REPARSING)
2978 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2979
dedbcade 2980 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 2981 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM		 2982 TAINT_PROPER("eval_sv()");
2983
14dd3ad8 2984 JMPENV_PUSH(ret);
6224f72b
GS		 2985 switch (ret) {
2986 case 0:
14dd3ad8 2987 redo_body:
2ba65d5f
DM		 2988 if (PL_op == (OP*)(&myop)) {
2989 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2990 if (!PL_op)
2991 goto fail; /* failed in compilation */
2992 }
4aca2f62 2993 CALLRUNOPS(aTHX);
312caa8e 2994 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2995 if (!(flags & G_KEEPERR)) {
ab69dbc2 2996 CLEAR_ERRSV();
8433848b 2997 }
4633a7c4 2998 break;
6224f72b 2999 case 1:
f86702cc 3000 STATUS_ALL_FAILURE;
924ba076 3001 /* FALLTHROUGH */
6224f72b 3002 case 2:
4633a7c4 3003 /* my_exit() was called */
03d9f026 3004 SET_CURSTASH(PL_defstash);
4633a7c4 3005 FREETMPS;
14dd3ad8 3006 JMPENV_POP;
f86702cc 3007 my_exit_jump();
e5964223 3008 NOT_REACHED; /* NOTREACHED */
6224f72b 3009 case 3:
3280af22 3010 if (PL_restartop) {
febb3a6d 3011 PL_restartjmpenv = NULL;
533c011a 3012 PL_op = PL_restartop;
3280af22 3013 PL_restartop = 0;
312caa8e 3014 goto redo_body;
4633a7c4 3015 }
4aca2f62 3016 fail:
3280af22 3017 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 3018 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 3019 retval = 0;
3020 else {
3021 retval = 1;
3280af22 3022 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 3023 }
312caa8e 3024 break;
4633a7c4
LW		 3025 }
3026
14dd3ad8 3027 JMPENV_POP;
4633a7c4 3028 if (flags & G_DISCARD) {
3280af22 3029 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 3030 retval = 0;
3031 FREETMPS;
3032 LEAVE;
3033 }
533c011a 3034 PL_op = oldop;
4633a7c4
LW		 3035 return retval;
3036}
3037
954c1994
GS		 3038/*
3039=for apidoc p||eval_pv
3040
422791e4 3041Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS		 3042
3043=cut
3044*/
3045
137443ea 3046SV*
864dbfa3 3047Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3048{
137443ea
PP		 3049 SV* sv = newSVpv(p, 0);
3050
7918f24d
NC		 3051 PERL_ARGS_ASSERT_EVAL_PV;
3052
864dbfa3 3053 eval_sv(sv, G_SCALAR);
137443ea
PP		 3054 SvREFCNT_dec(sv);
3055
ed1786ad
DD		 3056 {
3057 dSP;
3058 sv = POPs;
3059 PUTBACK;
3060 }
137443ea 3061
eed484f9
DD		 3062 /* just check empty string or undef? */
3063 if (croak_on_error) {
3064 SV * const errsv = ERRSV;
3065 if(SvTRUE_NN(errsv))
3066 /* replace with croak_sv? */
3067 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3068 }
137443ea
PP		 3069
3070 return sv;
3071}
3072
4633a7c4
LW		 3073/* Require a module. */
3074
954c1994 3075/*
ccfc67b7
JH		 3076=head1 Embedding Functions
3077
954c1994
GS		 3078=for apidoc p||require_pv
3079
7d3fb230
BS		 3080Tells Perl to C<require> the file named by the string argument. It is
3081analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3082implemented that way; consider using load_module instead.
954c1994 3083
7d3fb230 3084=cut */
954c1994 3085
4633a7c4 3086void
864dbfa3 3087Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3088{
d3acc0f7 3089 dSP;
97aff369 3090 SV* sv;
7918f24d
NC		 3091
3092 PERL_ARGS_ASSERT_REQUIRE_PV;
3093
e788e7d3 3094 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC		 3095 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3096 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3097 POPSTACK;
79072805
LW		 3098}
3099
76e3520e 3100STATIC void
b6f82619 3101S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3102{
ab821d7f 3103 /* This message really ought to be max 23 lines.
75c72d73 3104 * Removed -h because the user already knows that option. Others? */
fb73857a 3105
1566c39d
NC		 3106 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3107 minimum of 509 character string literals. */
27da23d5 3108 static const char * const usage_msg[] = {
1566c39d
NC		 3109" -0[octal] specify record separator (\\0, if no argument)\n"
3110" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3111" -C[number/list] enables the listed Unicode features\n"
3112" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3113" -d[:debugger] run program under debugger\n"
3114" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3115" -e program one line of program (several -e's allowed, omit programfile)\n"
3116" -E program like -e, but enables all optional features\n"
3117" -f don't do $sitelib/sitecustomize.pl at startup\n"
3118" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3119" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3120" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3121" -l[octal] enable line ending processing, specifies line terminator\n"
3122" -[mM][-]module execute \"use/no module...\" before executing program\n"
3123" -n assume \"while (<>) { ... }\" loop around program\n"
3124" -p assume loop like -n but print line also, like sed\n"
3125" -s enable rudimentary parsing for switches after programfile\n"
3126" -S look for programfile using PATH environment variable\n",
3127" -t enable tainting warnings\n"
3128" -T enable tainting checks\n"
3129" -u dump core after parsing program\n"
3130" -U allow unsafe operations\n"
3131" -v print version, patchlevel and license\n"
3132" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3133" -w enable many useful warnings\n"
1566c39d
NC		 3134" -W enable all warnings\n"
3135" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3136" -X disable all warnings\n"
3137" \n"
3138"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP		 3139NULL
3140};
27da23d5 3141 const char * const *p = usage_msg;
1566c39d 3142 PerlIO *out = PerlIO_stdout();
fb73857a 3143
1566c39d
NC		 3144 PerlIO_printf(out,
3145 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3146 PL_origargv[0]);
fb73857a 3147 while (*p)
1566c39d 3148 PerlIO_puts(out, *p++);
b6f82619 3149 my_exit(0);
4633a7c4
LW		 3150}
3151
b4ab917c
DM		 3152/* convert a string of -D options (or digits) into an int.
3153 * sets *s to point to the char after the options */
3154
3155#ifdef DEBUGGING
3156int
e1ec3a88 3157Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3158{
27da23d5 3159 static const char * const usage_msgd[] = {
651b8f1a
NC		 3160 " Debugging flag values: (see also -d)\n"
3161 " p Tokenizing and parsing (with v, displays parse stack)\n"
3162 " s Stack snapshots (with v, displays all stacks)\n"
3163 " l Context (loop) stack processing\n"
3164 " t Trace execution\n"
3165 " o Method and overloading resolution\n",
3166 " c String/numeric conversions\n"
3167 " P Print profiling info, source file input state\n"
3168 " m Memory and SV allocation\n"
3169 " f Format processing\n"
3170 " r Regular expression parsing and execution\n"
3171 " x Syntax tree dump\n",
3172 " u Tainting checks\n"
3173 " H Hash dump -- usurps values()\n"
3174 " X Scratchpad allocation\n"
3175 " D Cleaning up\n"
56967202 3176 " S Op slab allocation\n"
651b8f1a
NC		 3177 " T Tokenising\n"
3178 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3179 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3180 " v Verbose: use in conjunction with other flags\n"
3181 " C Copy On Write\n"
3182 " A Consistency checks on internal structures\n"
3183 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3184 " M trace smart match resolution\n"
3185 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3186 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3187 " i trace PerlIO layer processing\n",
e6e64d9b
JC		 3188 NULL
3189 };
22ff3130 3190 UV uv = 0;
7918f24d
NC		 3191
3192 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3193
b4ab917c
DM		 3194 if (isALPHA(**s)) {
3195 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3196 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3197
0eb30aeb 3198 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3199 const char * const d = strchr(debopts,**s);
b4ab917c 3200 if (d)
22ff3130 3201 uv |= 1 << (d - debopts);
b4ab917c 3202 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 3203 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3204 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 3205 }
3206 }
e6e64d9b 3207 else if (isDIGIT(**s)) {
96e440d2 3208 const char* e;
22ff3130 3209 if (grok_atoUV(*s, &uv, &e))
96e440d2 3210 *s = e;
0eb30aeb 3211 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3212 }
ddcf8bc1 3213 else if (givehelp) {
06e869a4 3214 const char *const *p = usage_msgd;
651b8f1a 3215 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3216 }
22ff3130 3217 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM		 3218}
3219#endif
3220
79072805
LW		 3221/* This routine handles any switches that can be given during run */
3222
c7030b81
NC		 3223const char *
3224Perl_moreswitches(pTHX_ const char *s)
79072805 3225{
27da23d5 3226 dVAR;
84c133a0 3227 UV rschar;
0544e6df 3228 const char option = *s; /* used to remember option in -m/-M code */
79072805 3229
7918f24d
NC		 3230 PERL_ARGS_ASSERT_MORESWITCHES;
3231
79072805
LW		 3232 switch (*s) {
3233 case '0':
a863c7d1 3234 {
f2095865 3235 I32 flags = 0;
a3b680e6 3236 STRLEN numlen;
f2095865
JH		 3237
3238 SvREFCNT_dec(PL_rs);
3239 if (s[1] == 'x' && s[2]) {
a3b680e6 3240 const char *e = s+=2;
f2095865
JH		 3241 U8 *tmps;
3242
a3b680e6
AL		 3243 while (*e)
3244 e++;
f2095865
JH		 3245 numlen = e - s;
3246 flags = PERL_SCAN_SILENT_ILLDIGIT;
3247 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3248 if (s + numlen < e) {
3249 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3250 numlen = 0;
3251 s--;
3252 }
396482e1 3253 PL_rs = newSVpvs("");
10656159 3254 tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865 3255 uvchr_to_utf8(tmps, rschar);
5f560d8a 3256 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH		 3257 SvUTF8_on(PL_rs);
3258 }
3259 else {
3260 numlen = 4;
3261 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3262 if (rschar & ~((U8)~0))
3263 PL_rs = &PL_sv_undef;
3264 else if (!rschar && numlen >= 2)
396482e1 3265 PL_rs = newSVpvs("");
f2095865
JH		 3266 else {
3267 char ch = (char)rschar;
3268 PL_rs = newSVpvn(&ch, 1);
3269 }
3270 }
64ace3f8 3271 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3272 return s + numlen;
a863c7d1 3273 }
46487f74 3274 case 'C':
a05d7ebb 3275 s++;
dd374669 3276 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 3277 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3278 PL_utf8cache = -1;
46487f74 3279 return s;
2304df62 3280 case 'F':
5fc691f1 3281 PL_minus_a = TRUE;
3280af22 3282 PL_minus_F = TRUE;
24ffa309 3283 PL_minus_n = TRUE;
ebce5377
RGS		 3284 PL_splitstr = ++s;
3285 while (*s && !isSPACE(*s)) ++s;
e49e380e 3286 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3287 return s;
79072805 3288 case 'a':
3280af22 3289 PL_minus_a = TRUE;
24ffa309 3290 PL_minus_n = TRUE;
79072805
LW		 3291 s++;
3292 return s;
3293 case 'c':
3280af22 3294 PL_minus_c = TRUE;
79072805
LW		 3295 s++;
3296 return s;
3297 case 'd':
f20b2998 3298 forbid_setid('d', FALSE);
4633a7c4 3299 s++;
2cbb2ee1
RGS		 3300
3301 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3302 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS		 3303 ++s;
3304 my_setenv("PERL5DB_THREADED", "1");
3305 }
3306
70c94a19
RR		 3307 /* The following permits -d:Mod to accepts arguments following an =
3308 in the fashion that -MSome::Mod does. */
3309 if (*s == ':' || *s == '=') {
b19934fb
NC		 3310 const char *start;
3311 const char *end;
3312 SV *sv;
3313
3314 if (*++s == '-') {
3315 ++s;
3316 sv = newSVpvs("no Devel::");
3317 } else {
3318 sv = newSVpvs("use Devel::");
3319 }
3320
3321 start = s;
3322 end = s + strlen(s);
f85893a1 3323
b19934fb 3324 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3325 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3326 if (*s != '=')
f85893a1 3327 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3328 else {
3329 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3330 /* Don't use NUL as q// delimiter here, this string goes in the
3331 * environment. */
3332 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3333 }
f85893a1 3334 s = end;
184f32ec 3335 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3336 SvREFCNT_dec(sv);
4633a7c4 3337 }
ed094faf 3338 if (!PL_perldb) {
3280af22 3339 PL_perldb = PERLDB_ALL;
a0d0e21e 3340 init_debugger();
ed094faf 3341 }
79072805
LW		 3342 return s;
3343 case 'D':
0453d815 3344 {
79072805 3345#ifdef DEBUGGING
f20b2998 3346 forbid_setid('D', FALSE);
b4ab917c 3347 s++;
dd374669 3348 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3349#else /* !DEBUGGING */
0453d815 3350 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3351 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3352 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3353 for (s++; isWORDCHAR(*s); s++) ;
79072805 3354#endif
79072805 3355 return s;
2b5060ae 3356 NOT_REACHED; /* NOTREACHED */
0453d815 3357 }
4633a7c4 3358 case 'h':
b6f82619 3359 usage();
2b5060ae
DM		 3360 NOT_REACHED; /* NOTREACHED */
3361
79072805 3362 case 'i':
43c5f42d 3363 Safefree(PL_inplace);
c030f24b
GH		 3364#if defined(__CYGWIN__) /* do backup extension automagically */
3365 if (*(s+1) == '\0') {
c86a4f2e 3366 PL_inplace = savepvs(".bak");
c030f24b
GH		 3367 return s+1;
3368 }
3369#endif /* __CYGWIN__ */
5ef5d758 3370 {
d4c19fe8 3371 const char * const start = ++s;
5ef5d758
NC		 3372 while (*s && !isSPACE(*s))
3373 ++s;
3374
3375 PL_inplace = savepvn(start, s - start);
3376 }
fb73857a 3377 return s;
4e49a025 3378 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3379 forbid_setid('I', FALSE);
fb73857a
PP		 3380 ++s;
3381 while (*s && isSPACE(*s))
3382 ++s;
3383 if (*s) {
c7030b81 3384 const char *e, *p;
0df16ed7
GS		 3385 p = s;
3386 /* ignore trailing spaces (possibly followed by other switches) */
3387 do {
3388 for (e = p; *e && !isSPACE(*e); e++) ;
3389 p = e;
3390 while (isSPACE(*p))
3391 p++;
3392 } while (*p && *p != '-');
55b4bc1c 3393 incpush(s, e-s,
e28f3139 3394 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3395 s = p;
3396 if (*s == '-')
3397 s++;
79072805
LW		 3398 }
3399 else
a67e862a 3400 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3401 return s;
79072805 3402 case 'l':
3280af22 3403 PL_minus_l = TRUE;
79072805 3404 s++;
7889fe52
NIS		 3405 if (PL_ors_sv) {
3406 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3407 PL_ors_sv = NULL;
7889fe52 3408 }
79072805 3409 if (isDIGIT(*s)) {
53305cf1 3410 I32 flags = 0;
a3b680e6 3411 STRLEN numlen;
396482e1 3412 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3413 numlen = 3 + (*s == '0');
3414 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3415 s += numlen;
3416 }
3417 else {
8bfdd7d9 3418 if (RsPARA(PL_rs)) {
396482e1 3419 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3420 }
3421 else {
8bfdd7d9 3422 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3423 }
79072805
LW		 3424 }
3425 return s;
1a30305b 3426 case 'M':
f20b2998 3427 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3428 /* FALLTHROUGH */
1a30305b 3429 case 'm':
f20b2998 3430 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3431 if (*++s) {
c7030b81 3432 const char *start;
b64cb68c 3433 const char *end;
11343788 3434 SV *sv;
e1ec3a88 3435 const char *use = "use ";
0544e6df 3436 bool colon = FALSE;
a5f75d66 3437 /* -M-foo == 'no foo' */
d0043bd1
NC		 3438 /* Leading space on " no " is deliberate, to make both
3439 possibilities the same length. */
3440 if (*s == '-') { use = " no "; ++s; }
3441 sv = newSVpvn(use,4);
a5f75d66 3442 start = s;
1a30305b 3443 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3444 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB		 3445 if( *s++ == ':' ) {
3446 if( *s == ':' )
3447 s++;
3448 else
3449 colon = TRUE;
3450 }
3451 }
3452 if (s == start)
3453 Perl_croak(aTHX_ "Module name required with -%c option",
3454 option);
3455 if (colon)
3456 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3457 "contains single ':'",
63da6837 3458 (int)(s - start), start, option);
b64cb68c 3459 end = s + strlen(s);
c07a80fd 3460 if (*s != '=') {
b64cb68c 3461 sv_catpvn(sv, start, end - start);
0544e6df 3462 if (option == 'm') {
c07a80fd 3463 if (*s != '\0')
cea2e8a9 3464 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3465 sv_catpvs( sv, " ()");
c07a80fd
PP		 3466 }
3467 } else {
11343788 3468 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3469 /* Use NUL as q''-delimiter. */
3470 sv_catpvs(sv, " split(/,/,q\0");
3471 ++s;
3472 sv_catpvn(sv, s, end - s);
396482e1 3473 sv_catpvs(sv, "\0)");
c07a80fd 3474 }
b64cb68c 3475 s = end;
29a861e7 3476 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP		 3477 }
3478 else