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4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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);
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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 *
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GS
155perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
156 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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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
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GS
180 return my_perl;
181}
182#else
954c1994
GS
183
184/*
ccfc67b7
JH
185=head1 Embedding Functions
186
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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
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258#ifdef PERL_TRACE_OPS
259 Zero(PL_op_exec_cnt, OP_max+2, UV);
260#endif
261
0d96b528 262 init_constants();
34caed6d 263
d6295071 264#ifdef NO_PERL_INTERNAL_RAND_SEED
f26b33bd 265 Perl_drand48_init_r(&PL_internal_random_state, seed());
d6295071
TC
266#else
267 {
268 UV seed;
269 const char *env_pv;
270 if (PerlProc_getuid() != PerlProc_geteuid() ||
271 PerlProc_getgid() != PerlProc_getegid() ||
272 !(env_pv = PerlEnv_getenv("PERL_INTERNAL_RAND_SEED")) ||
273 grok_number(env_pv, strlen(env_pv), &seed) != IS_NUMBER_IN_UV) {
274 seed = seed();
275 }
276 Perl_drand48_init_r(&PL_internal_random_state, (U32)seed);
277 }
278#endif
f26b33bd 279
34caed6d 280 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 281 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
282
283 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 284#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 285 PL_pidstatus = newHV();
ca0c25f6 286#endif
79072805 287
396482e1 288 PL_rs = newSVpvs("\n");
dc92893f 289
cea2e8a9 290 init_stacks();
79072805 291
748a9306 292 init_ids();
a5f75d66 293
0927ade0 294 S_fixup_platform_bugs();
295
312caa8e 296 JMPENV_BOOTSTRAP;
f86702cc
PP
297 STATUS_ALL_SUCCESS;
298
0672f40e 299 init_i18nl10n(1);
0b5b802d 300
ab821d7f 301#if defined(LOCAL_PATCH_COUNT)
3280af22 302 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
303#endif
304
fa2e4594
TC
305#if defined(LIBM_LIB_VERSION)
306 /*
307 * Some BSDs and Cygwin default to POSIX math instead of IEEE.
308 * This switches them over to IEEE.
309 */
310 _LIB_VERSION = _IEEE_;
311#endif
312
52853b95
GS
313#ifdef HAVE_INTERP_INTERN
314 sys_intern_init();
315#endif
316
3a1ee7e8 317 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 318
3280af22
NIS
319 PL_fdpid = newAV(); /* for remembering popen pids by fd */
320 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 321 PL_errors = newSVpvs("");
854da30f
YO
322 SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
323 SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
324 SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
1fcf4c12 325#ifdef USE_ITHREADS
402d2eb1
NC
326 /* First entry is a list of empty elements. It needs to be initialised
327 else all hell breaks loose in S_find_uninit_var(). */
328 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 329 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 330 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 331#endif
e5dd39fc 332#ifdef USE_REENTRANT_API
59bd0823 333 Perl_reentrant_init(aTHX);
e5dd39fc 334#endif
e6a172f3 335 if (PL_hash_seed_set == FALSE) {
9d5e3f1a
YO
336 /* Initialize the hash seed and state at startup. This must be
337 * done very early, before ANY hashes are constructed, and once
338 * setup is fixed for the lifetime of the process.
339 *
340 * If you decide to disable the seeding process you should choose
341 * a suitable seed yourself and define PERL_HASH_SEED to a well chosen
342 * string. See hv_func.h for details.
343 */
1a237f4f 344#if defined(USE_HASH_SEED)
9d5e3f1a 345 /* get the hash seed from the environment or from an RNG */
7dc86639 346 Perl_get_hash_seed(aTHX_ PL_hash_seed);
1a237f4f 347#else
9d5e3f1a
YO
348 /* they want a hard coded seed, check that it is long enough */
349 assert( strlen(PERL_HASH_SEED) >= PERL_HASH_SEED_BYTES );
1a237f4f 350#endif
e6a172f3 351
9d5e3f1a
YO
352 /* now we use the chosen seed to initialize the state -
353 * in some configurations this may be a relatively speaking
354 * expensive operation, but we only have to do it once at startup */
355 PERL_HASH_SEED_STATE(PERL_HASH_SEED,PL_hash_state);
356
357#ifdef PERL_USE_SINGLE_CHAR_HASH_CACHE
358 /* we can build a special cache for 0/1 byte keys, if people choose
359 * I suspect most of the time it is not worth it */
360 {
361 char str[2]="\0";
362 int i;
363 for (i=0;i<256;i++) {
364 str[0]= i;
365 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[i],str,1);
366 }
367 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[256],str,0);
368 }
369#endif
370 /* at this point we have initialezed the hash function, and we can start
371 * constructing hashes */
372 PL_hash_seed_set= TRUE;
373 }
3d47000e
AB
374 /* Note that strtab is a rather special HV. Assumptions are made
375 about not iterating on it, and not adding tie magic to it.
376 It is properly deallocated in perl_destruct() */
377 PL_strtab = newHV();
378
9d5e3f1a
YO
379 /* SHAREKEYS tells us that the hash has its keys shared with PL_strtab,
380 * which is not the case with PL_strtab itself */
3d47000e 381 HvSHAREKEYS_off(PL_strtab); /* mandatory */
9d5e3f1a 382 hv_ksplit(PL_strtab, 1 << 11);
3d47000e 383
a38ab475
RZ
384 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
385
2f42fcb0
JH
386#ifndef PERL_MICRO
387# ifdef USE_ENVIRON_ARRAY
0631ea03 388 PL_origenviron = environ;
2f42fcb0 389# endif
0631ea03
AB
390#endif
391
5311654c 392 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 393 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
394 * The HZ if not originally defined has been by now
395 * been defined as CLK_TCK, if available. */
b6c36746 396#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
397 PL_clocktick = sysconf(_SC_CLK_TCK);
398 if (PL_clocktick <= 0)
399#endif
400 PL_clocktick = HZ;
401
081fc587
AB
402 PL_stashcache = newHV();
403
e8e3635e 404 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 405
27da23d5
JH
406#ifdef HAS_MMAP
407 if (!PL_mmap_page_size) {
408#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
409 {
410 SETERRNO(0, SS_NORMAL);
411# ifdef _SC_PAGESIZE
412 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
413# else
414 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
415# endif
416 if ((long) PL_mmap_page_size < 0) {
417 if (errno) {
44f8325f 418 SV * const error = ERRSV;
d4c19fe8 419 SvUPGRADE(error, SVt_PV);
0510663f 420 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
421 }
422 else
423 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
424 }
425 }
426#else
427# ifdef HAS_GETPAGESIZE
428 PL_mmap_page_size = getpagesize();
429# else
430# if defined(I_SYS_PARAM) && defined(PAGESIZE)
431 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
432# endif
433# endif
434#endif
435 if (PL_mmap_page_size <= 0)
436 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
437 (IV) PL_mmap_page_size);
438 }
439#endif /* HAS_MMAP */
440
441#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
442 PL_timesbase.tms_utime = 0;
443 PL_timesbase.tms_stime = 0;
444 PL_timesbase.tms_cutime = 0;
445 PL_timesbase.tms_cstime = 0;
446#endif
447
7d113631
NC
448 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
449
a3e6e81e 450 PL_registered_mros = newHV();
9e169432
NC
451 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
452 HvMAX(PL_registered_mros) = 0;
a3e6e81e 453
7b8dd5f4
KW
454 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
455 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
456 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
457 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
458 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
459 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
460 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
461 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
462 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
463 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
464 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
465 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
466 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
467 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
468 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
469 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 470 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
471 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
472 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 473 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
9e7ded3f 474 PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist);
5acc3fa5 475#ifdef HAS_POSIX_2008_LOCALE
6ebbc862
KW
476 PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
477#endif
7b8dd5f4 478
8990e307 479 ENTER;
79072805
LW
480}
481
954c1994 482/*
62375a60
NIS
483=for apidoc nothreadhook
484
485Stub that provides thread hook for perl_destruct when there are
486no threads.
487
488=cut
489*/
490
491int
4e9e3734 492Perl_nothreadhook(pTHX)
62375a60 493{
96a5add6 494 PERL_UNUSED_CONTEXT;
62375a60
NIS
495 return 0;
496}
497
41e4abd8
NC
498#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
499void
500Perl_dump_sv_child(pTHX_ SV *sv)
501{
502 ssize_t got;
bf357333
NC
503 const int sock = PL_dumper_fd;
504 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
505 union control_un control;
506 struct msghdr msg;
808ad2d0 507 struct iovec vec[2];
bf357333 508 struct cmsghdr *cmptr;
808ad2d0
NC
509 int returned_errno;
510 unsigned char buffer[256];
41e4abd8 511
7918f24d
NC
512 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
513
bf357333 514 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
515 return;
516
517 PerlIO_flush(Perl_debug_log);
518
bf357333
NC
519 /* All these shenanigans are to pass a file descriptor over to our child for
520 it to dump out to. We can't let it hold open the file descriptor when it
521 forks, as the file descriptor it will dump to can turn out to be one end
522 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 523 be open, the wait would be forever.) */
bf357333
NC
524
525 msg.msg_control = control.control;
526 msg.msg_controllen = sizeof(control.control);
527 /* We're a connected socket so we don't need a destination */
528 msg.msg_name = NULL;
529 msg.msg_namelen = 0;
530 msg.msg_iov = vec;
808ad2d0 531 msg.msg_iovlen = 1;
bf357333
NC
532
533 cmptr = CMSG_FIRSTHDR(&msg);
534 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
535 cmptr->cmsg_level = SOL_SOCKET;
536 cmptr->cmsg_type = SCM_RIGHTS;
537 *((int *)CMSG_DATA(cmptr)) = 1;
538
539 vec[0].iov_base = (void*)&sv;
540 vec[0].iov_len = sizeof(sv);
541 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
542
543 if(got < 0) {
bf357333 544 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
545 abort();
546 }
bf357333
NC
547 if(got < sizeof(sv)) {
548 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
549 abort();
550 }
551
808ad2d0
NC
552 /* Return protocol is
553 int: errno value
554 unsigned char: length of location string (0 for empty)
555 unsigned char*: string (not terminated)
556 */
557 vec[0].iov_base = (void*)&returned_errno;
558 vec[0].iov_len = sizeof(returned_errno);
559 vec[1].iov_base = buffer;
560 vec[1].iov_len = 1;
561
562 got = readv(sock, vec, 2);
41e4abd8
NC
563
564 if(got < 0) {
565 perror("Debug leaking scalars parent read failed");
808ad2d0 566 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
567 abort();
568 }
808ad2d0 569 if(got < sizeof(returned_errno) + 1) {
41e4abd8 570 perror("Debug leaking scalars parent short read");
808ad2d0 571 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
572 abort();
573 }
574
808ad2d0
NC
575 if (*buffer) {
576 got = read(sock, buffer + 1, *buffer);
577 if(got < 0) {
578 perror("Debug leaking scalars parent read 2 failed");
579 PerlIO_flush(PerlIO_stderr());
580 abort();
581 }
582
583 if(got < *buffer) {
584 perror("Debug leaking scalars parent short read 2");
585 PerlIO_flush(PerlIO_stderr());
586 abort();
587 }
588 }
589
590 if (returned_errno || *buffer) {
591 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
592 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 593 returned_errno, Strerror(returned_errno));
41e4abd8
NC
594 }
595}
596#endif
597
62375a60 598/*
954c1994
GS
599=for apidoc perl_destruct
600
601Shuts down a Perl interpreter. See L<perlembed>.
602
603=cut
604*/
605
31d77e54 606int
0cb96387 607perl_destruct(pTHXx)
79072805 608{
27da23d5 609 dVAR;
be2ea8ed 610 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 611 HV *hv;
2aa47728 612#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
613 pid_t child;
614#endif
9c0b6888 615 int i;
8990e307 616
7918f24d
NC
617 PERL_ARGS_ASSERT_PERL_DESTRUCT;
618#ifndef MULTIPLICITY
ed6c66dd 619 PERL_UNUSED_ARG(my_perl);
7918f24d 620#endif
9d4ba2ae 621
3d22c4f0
GG
622 assert(PL_scopestack_ix == 1);
623
7766f137
GS
624 /* wait for all pseudo-forked children to finish */
625 PERL_WAIT_FOR_CHILDREN;
626
3280af22 627 destruct_level = PL_perl_destruct_level;
36e77d41 628#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 629 {
9d4ba2ae
AL
630 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
631 if (s) {
96e440d2
JH
632 int i;
633 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
634 i = -1;
635 } else {
22ff3130
HS
636 UV uv;
637 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
638 i = (int)uv;
639 else
640 i = 0;
96e440d2 641 }
36e77d41
DD
642#ifdef DEBUGGING
643 if (destruct_level < i) destruct_level = i;
644#endif
645#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
646 /* RT #114496, for perl_free */
647 PL_perl_destruct_level = i;
36e77d41 648#endif
5f05dabc 649 }
4633a7c4
LW
650 }
651#endif
652
27da23d5 653 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
654 dJMPENV;
655 int x = 0;
656
657 JMPENV_PUSH(x);
1b6737cc 658 PERL_UNUSED_VAR(x);
9ebf26ad 659 if (PL_endav && !PL_minus_c) {
ca7b837b 660 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 661 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 662 }
f3faeb53 663 JMPENV_POP;
26f423df 664 }
f3faeb53 665 LEAVE;
a0d0e21e 666 FREETMPS;
3d22c4f0 667 assert(PL_scopestack_ix == 0);
a0d0e21e 668
e00b64d4 669 /* Need to flush since END blocks can produce output */
8abddda3
TC
670 /* flush stdout separately, since we can identify it */
671#ifdef USE_PERLIO
672 {
673 PerlIO *stdo = PerlIO_stdout();
674 if (*stdo && PerlIO_flush(stdo)) {
675 PerlIO_restore_errno(stdo);
675c73ca
MB
676 if (errno)
677 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
678 Strerror(errno));
8abddda3
TC
679 if (!STATUS_UNIX)
680 STATUS_ALL_FAILURE;
681 }
682 }
683#endif
f13a2bc0 684 my_fflush_all();
e00b64d4 685
75d476e2 686#ifdef PERL_TRACE_OPS
e71f25b3
JC
687 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
688 {
689 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
690 UV uv;
691
692 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
693 || !(uv > 0))
694 goto no_trace_out;
695 }
75d476e2
SM
696 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
697 for (i = 0; i <= OP_max; ++i) {
e71f25b3 698 if (PL_op_exec_cnt[i])
147e3846 699 PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM
700 }
701 /* Utility slot for easily doing little tracing experiments in the runloop: */
702 if (PL_op_exec_cnt[OP_max+1] != 0)
147e3846 703 PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]);
75d476e2 704 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 705 no_trace_out:
75d476e2
SM
706#endif
707
708
16c91539 709 if (PL_threadhook(aTHX)) {
62375a60 710 /* Threads hook has vetoed further cleanup */
c301d606 711 PL_veto_cleanup = TRUE;
37038d91 712 return STATUS_EXIT;
62375a60
NIS
713 }
714
2aa47728
NC
715#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
716 if (destruct_level != 0) {
717 /* Fork here to create a child. Our child's job is to preserve the
718 state of scalars prior to destruction, so that we can instruct it
719 to dump any scalars that we later find have leaked.
720 There's no subtlety in this code - it assumes POSIX, and it doesn't
721 fail gracefully */
722 int fd[2];
723
724 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
725 perror("Debug leaking scalars socketpair failed");
726 abort();
727 }
728
729 child = fork();
730 if(child == -1) {
731 perror("Debug leaking scalars fork failed");
732 abort();
733 }
734 if (!child) {
735 /* We are the child */
3125a5a4
NC
736 const int sock = fd[1];
737 const int debug_fd = PerlIO_fileno(Perl_debug_log);
738 int f;
808ad2d0
NC
739 const char *where;
740 /* Our success message is an integer 0, and a char 0 */
b61433a9 741 static const char success[sizeof(int) + 1] = {0};
3125a5a4 742
2aa47728 743 close(fd[0]);
2aa47728 744
3125a5a4
NC
745 /* We need to close all other file descriptors otherwise we end up
746 with interesting hangs, where the parent closes its end of a
747 pipe, and sits waiting for (another) child to terminate. Only
748 that child never terminates, because it never gets EOF, because
bf357333
NC
749 we also have the far end of the pipe open. We even need to
750 close the debugging fd, because sometimes it happens to be one
751 end of a pipe, and a process is waiting on the other end for
752 EOF. Normally it would be closed at some point earlier in
753 destruction, but if we happen to cause the pipe to remain open,
754 EOF never occurs, and we get an infinite hang. Hence all the
755 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
756
757 f = sysconf(_SC_OPEN_MAX);
758 if(f < 0) {
808ad2d0
NC
759 where = "sysconf failed";
760 goto abort;
3125a5a4
NC
761 }
762 while (f--) {
763 if (f == sock)
764 continue;
3125a5a4
NC
765 close(f);
766 }
767
2aa47728
NC
768 while (1) {
769 SV *target;
bf357333
NC
770 union control_un control;
771 struct msghdr msg;
772 struct iovec vec[1];
773 struct cmsghdr *cmptr;
774 ssize_t got;
775 int got_fd;
776
777 msg.msg_control = control.control;
778 msg.msg_controllen = sizeof(control.control);
779 /* We're a connected socket so we don't need a source */
780 msg.msg_name = NULL;
781 msg.msg_namelen = 0;
782 msg.msg_iov = vec;
c3caa5c3 783 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
784
785 vec[0].iov_base = (void*)&target;
786 vec[0].iov_len = sizeof(target);
787
788 got = recvmsg(sock, &msg, 0);
2aa47728
NC
789
790 if(got == 0)
791 break;
792 if(got < 0) {
808ad2d0
NC
793 where = "recv failed";
794 goto abort;
2aa47728
NC
795 }
796 if(got < sizeof(target)) {
808ad2d0
NC
797 where = "short recv";
798 goto abort;
2aa47728 799 }
bf357333 800
808ad2d0
NC
801 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
802 where = "no cmsg";
803 goto abort;
804 }
805 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
806 where = "wrong cmsg_len";
807 goto abort;
808 }
809 if(cmptr->cmsg_level != SOL_SOCKET) {
810 where = "wrong cmsg_level";
811 goto abort;
812 }
813 if(cmptr->cmsg_type != SCM_RIGHTS) {
814 where = "wrong cmsg_type";
815 goto abort;
816 }
bf357333
NC
817
818 got_fd = *(int*)CMSG_DATA(cmptr);
819 /* For our last little bit of trickery, put the file descriptor
820 back into Perl_debug_log, as if we never actually closed it
821 */
808ad2d0
NC
822 if(got_fd != debug_fd) {
823 if (dup2(got_fd, debug_fd) == -1) {
824 where = "dup2";
825 goto abort;
826 }
827 }
2aa47728 828 sv_dump(target);
bf357333 829
2aa47728
NC
830 PerlIO_flush(Perl_debug_log);
831
808ad2d0 832 got = write(sock, &success, sizeof(success));
2aa47728
NC
833
834 if(got < 0) {
808ad2d0
NC
835 where = "write failed";
836 goto abort;
2aa47728 837 }
808ad2d0
NC
838 if(got < sizeof(success)) {
839 where = "short write";
840 goto abort;
2aa47728
NC
841 }
842 }
843 _exit(0);
808ad2d0
NC
844 abort:
845 {
846 int send_errno = errno;
847 unsigned char length = (unsigned char) strlen(where);
848 struct iovec failure[3] = {
849 {(void*)&send_errno, sizeof(send_errno)},
850 {&length, 1},
851 {(void*)where, length}
852 };
853 int got = writev(sock, failure, 3);
854 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
855 in the parent if we try to read from the socketpair after the
856 child has exited, even if there was data to read.
857 So sleep a bit to give the parent a fighting chance of
858 reading the data. */
859 sleep(2);
860 _exit((got == -1) ? errno : 0);
861 }
bf357333 862 /* End of child. */
2aa47728 863 }
41e4abd8 864 PL_dumper_fd = fd[0];
2aa47728
NC
865 close(fd[1]);
866 }
867#endif
868
ff0cee69
PP
869 /* We must account for everything. */
870
871 /* Destroy the main CV and syntax tree */
37e77c23
FC
872 /* Set PL_curcop now, because destroying ops can cause new SVs
873 to be generated in Perl_pad_swipe, and when running with
874 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
875 op from which the filename structure member is copied. */
17fbfdf6 876 PL_curcop = &PL_compiling;
3280af22 877 if (PL_main_root) {
4e380990
DM
878 /* ensure comppad/curpad to refer to main's pad */
879 if (CvPADLIST(PL_main_cv)) {
880 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 881 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 882 }
3280af22 883 op_free(PL_main_root);
5f66b61c 884 PL_main_root = NULL;
a0d0e21e 885 }
5f66b61c 886 PL_main_start = NULL;
aac9d523
DM
887 /* note that PL_main_cv isn't usually actually freed at this point,
888 * due to the CvOUTSIDE refs from subs compiled within it. It will
889 * get freed once all the subs are freed in sv_clean_all(), for
890 * destruct_level > 0 */
3280af22 891 SvREFCNT_dec(PL_main_cv);
601f1833 892 PL_main_cv = NULL;
ca7b837b 893 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 894
13621cfb
NIS
895 /* Tell PerlIO we are about to tear things apart in case
896 we have layers which are using resources that should
897 be cleaned up now.
898 */
899
900 PerlIO_destruct(aTHX);
901
ddf23d4a
SM
902 /*
903 * Try to destruct global references. We do this first so that the
904 * destructors and destructees still exist. Some sv's might remain.
905 * Non-referenced objects are on their own.
906 */
907 sv_clean_objs();
8990e307 908
5cd24f17 909 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 910 SvREFCNT_dec(PL_warnhook);
a0714e2c 911 PL_warnhook = NULL;
3280af22 912 SvREFCNT_dec(PL_diehook);
a0714e2c 913 PL_diehook = NULL;
5cd24f17 914
4b556e6c 915 /* call exit list functions */
3280af22 916 while (PL_exitlistlen-- > 0)
acfe0abc 917 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 918
3280af22 919 Safefree(PL_exitlist);
4b556e6c 920
1c4916e5
CB
921 PL_exitlist = NULL;
922 PL_exitlistlen = 0;
923
a3e6e81e
NC
924 SvREFCNT_dec(PL_registered_mros);
925
551a8b83 926 /* jettison our possibly duplicated environment */
4b647fb0
DM
927 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
928 * so we certainly shouldn't free it here
929 */
2f42fcb0 930#ifndef PERL_MICRO
4b647fb0 931#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 932 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
933#ifdef USE_ITHREADS
934 /* only main thread can free environ[0] contents */
935 && PL_curinterp == aTHX
936#endif
937 )
938 {
551a8b83
JH
939 I32 i;
940
941 for (i = 0; environ[i]; i++)
4b420006 942 safesysfree(environ[i]);
0631ea03 943
4b420006
JH
944 /* Must use safesysfree() when working with environ. */
945 safesysfree(environ);
551a8b83
JH
946
947 environ = PL_origenviron;
948 }
949#endif
2f42fcb0 950#endif /* !PERL_MICRO */
551a8b83 951
30985c42
JH
952 if (destruct_level == 0) {
953
954 DEBUG_P(debprofdump());
955
956#if defined(PERLIO_LAYERS)
957 /* No more IO - including error messages ! */
958 PerlIO_cleanup(aTHX);
959#endif
960
961 CopFILE_free(&PL_compiling);
30985c42
JH
962
963 /* The exit() function will do everything that needs doing. */
964 return STATUS_EXIT;
965 }
966
9fa9f06b
KW
967 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
968
5f8cb046
DM
969#ifdef USE_ITHREADS
970 /* the syntax tree is shared between clones
971 * so op_free(PL_main_root) only ReREFCNT_dec's
972 * REGEXPs in the parent interpreter
973 * we need to manually ReREFCNT_dec for the clones
974 */
0547a729
DM
975 {
976 I32 i = AvFILLp(PL_regex_padav);
977 SV **ary = AvARRAY(PL_regex_padav);
978
979 for (; i; i--) {
980 SvREFCNT_dec(ary[i]);
981 ary[i] = &PL_sv_undef;
982 }
983 }
5f8cb046
DM
984#endif
985
0547a729 986
ad64d0ec 987 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
988 PL_stashcache = NULL;
989
5f05dabc
PP
990 /* loosen bonds of global variables */
991
2f9285f8
DM
992 /* XXX can PL_parser still be non-null here? */
993 if(PL_parser && PL_parser->rsfp) {
994 (void)PerlIO_close(PL_parser->rsfp);
995 PL_parser->rsfp = NULL;
8ebc5c01
PP
996 }
997
84386e14
RGS
998 if (PL_minus_F) {
999 Safefree(PL_splitstr);
1000 PL_splitstr = NULL;
1001 }
1002
8ebc5c01 1003 /* switches */
3280af22
NIS
1004 PL_minus_n = FALSE;
1005 PL_minus_p = FALSE;
1006 PL_minus_l = FALSE;
1007 PL_minus_a = FALSE;
1008 PL_minus_F = FALSE;
1009 PL_doswitches = FALSE;
599cee73 1010 PL_dowarn = G_WARN_OFF;
1a904fc8 1011#ifdef PERL_SAWAMPERSAND
d3b97530 1012 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 1013#endif
3280af22
NIS
1014 PL_unsafe = FALSE;
1015
1016 Safefree(PL_inplace);
bd61b366 1017 PL_inplace = NULL;
a7cb1f99 1018 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
1019
1020 if (PL_e_script) {
1021 SvREFCNT_dec(PL_e_script);
a0714e2c 1022 PL_e_script = NULL;
8ebc5c01
PP
1023 }
1024
bf9cdc68
RG
1025 PL_perldb = 0;
1026
8ebc5c01
PP
1027 /* magical thingies */
1028
e23d9e2f
CS
1029 SvREFCNT_dec(PL_ofsgv); /* *, */
1030 PL_ofsgv = NULL;
5f05dabc 1031
7889fe52 1032 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 1033 PL_ors_sv = NULL;
8ebc5c01 1034
3280af22 1035 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 1036 PL_rs = NULL;
dc92893f 1037
d33b2eba 1038 Safefree(PL_osname); /* $^O */
bd61b366 1039 PL_osname = NULL;
5f05dabc 1040
3280af22 1041 SvREFCNT_dec(PL_statname);
a0714e2c
SS
1042 PL_statname = NULL;
1043 PL_statgv = NULL;
5f05dabc 1044
8ebc5c01
PP
1045 /* defgv, aka *_ should be taken care of elsewhere */
1046
7d5ea4e7
GS
1047 /* float buffer */
1048 Safefree(PL_efloatbuf);
bd61b366 1049 PL_efloatbuf = NULL;
7d5ea4e7
GS
1050 PL_efloatsize = 0;
1051
8ebc5c01 1052 /* startup and shutdown function lists */
3280af22 1053 SvREFCNT_dec(PL_beginav);
5a837c8f 1054 SvREFCNT_dec(PL_beginav_save);
3280af22 1055 SvREFCNT_dec(PL_endav);
7d30b5c4 1056 SvREFCNT_dec(PL_checkav);
ece599bd 1057 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
1058 SvREFCNT_dec(PL_unitcheckav);
1059 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1060 SvREFCNT_dec(PL_initav);
7d49f689
NC
1061 PL_beginav = NULL;
1062 PL_beginav_save = NULL;
1063 PL_endav = NULL;
1064 PL_checkav = NULL;
1065 PL_checkav_save = NULL;
3c10abe3
AG
1066 PL_unitcheckav = NULL;
1067 PL_unitcheckav_save = NULL;
7d49f689 1068 PL_initav = NULL;
5618dfe8 1069
8ebc5c01 1070 /* shortcuts just get cleared */
a0714e2c
SS
1071 PL_hintgv = NULL;
1072 PL_errgv = NULL;
a0714e2c
SS
1073 PL_argvoutgv = NULL;
1074 PL_stdingv = NULL;
1075 PL_stderrgv = NULL;
1076 PL_last_in_gv = NULL;
a0714e2c
SS
1077 PL_DBsingle = NULL;
1078 PL_DBtrace = NULL;
1079 PL_DBsignal = NULL;
a6d69523
TC
1080 PL_DBsingle_iv = 0;
1081 PL_DBtrace_iv = 0;
1082 PL_DBsignal_iv = 0;
601f1833 1083 PL_DBcv = NULL;
7d49f689 1084 PL_dbargs = NULL;
5c284bb0 1085 PL_debstash = NULL;
8ebc5c01 1086
cf93a474 1087 SvREFCNT_dec(PL_envgv);
f03015cd 1088 SvREFCNT_dec(PL_incgv);
722fa0e9 1089 SvREFCNT_dec(PL_argvgv);
475b1e90 1090 SvREFCNT_dec(PL_replgv);
8cece913
FC
1091 SvREFCNT_dec(PL_DBgv);
1092 SvREFCNT_dec(PL_DBline);
1093 SvREFCNT_dec(PL_DBsub);
cf93a474 1094 PL_envgv = NULL;
f03015cd 1095 PL_incgv = NULL;
722fa0e9 1096 PL_argvgv = NULL;
475b1e90 1097 PL_replgv = NULL;
8cece913
FC
1098 PL_DBgv = NULL;
1099 PL_DBline = NULL;
1100 PL_DBsub = NULL;
1101
7a1c5554 1102 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1103 PL_argvout_stack = NULL;
8ebc5c01 1104
5c831c24 1105 SvREFCNT_dec(PL_modglobal);
5c284bb0 1106 PL_modglobal = NULL;
5c831c24 1107 SvREFCNT_dec(PL_preambleav);
7d49f689 1108 PL_preambleav = NULL;
5c831c24 1109 SvREFCNT_dec(PL_subname);
a0714e2c 1110 PL_subname = NULL;
ca0c25f6 1111#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1112 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1113 PL_pidstatus = NULL;
ca0c25f6 1114#endif
5c831c24 1115 SvREFCNT_dec(PL_toptarget);
a0714e2c 1116 PL_toptarget = NULL;
5c831c24 1117 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1118 PL_bodytarget = NULL;
1119 PL_formtarget = NULL;
5c831c24 1120
d33b2eba 1121 /* free locale stuff */
b9582b6a 1122#ifdef USE_LOCALE_COLLATE
d33b2eba 1123 Safefree(PL_collation_name);
bd61b366 1124 PL_collation_name = NULL;
b9582b6a 1125#endif
d33b2eba 1126
b9582b6a 1127#ifdef USE_LOCALE_NUMERIC
d33b2eba 1128 Safefree(PL_numeric_name);
bd61b366 1129 PL_numeric_name = NULL;
a453c169 1130 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1131 PL_numeric_radix_sv = NULL;
b9582b6a 1132#endif
d33b2eba 1133
f7416781
KW
1134 if (PL_langinfo_buf) {
1135 Safefree(PL_langinfo_buf);
1136 PL_langinfo_buf = NULL;
1137 }
1138
9c0b6888
KW
1139 /* clear character classes */
1140 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1141 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1142 PL_utf8_swash_ptrs[i] = NULL;
1143 }
5c831c24
GS
1144 SvREFCNT_dec(PL_utf8_mark);
1145 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1146 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1147 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1148 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1149 SvREFCNT_dec(PL_utf8_idstart);
1150 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1151 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1152 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1153 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1154 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1155 SvREFCNT_dec(PL_UpperLatin1);
1156 SvREFCNT_dec(PL_Latin1);
1157 SvREFCNT_dec(PL_NonL1NonFinalFold);
1158 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1159#ifdef USE_LOCALE_CTYPE
780fcc9f 1160 SvREFCNT_dec(PL_warn_locale);
5b7de470 1161#endif
a0714e2c
SS
1162 PL_utf8_mark = NULL;
1163 PL_utf8_toupper = NULL;
1164 PL_utf8_totitle = NULL;
1165 PL_utf8_tolower = NULL;
1166 PL_utf8_tofold = NULL;
1167 PL_utf8_idstart = NULL;
1168 PL_utf8_idcont = NULL;
2726813d 1169 PL_utf8_foldclosures = NULL;
9fa9f06b 1170 PL_AboveLatin1 = NULL;
e0a1ff7a 1171 PL_InBitmap = NULL;
9fa9f06b 1172 PL_HasMultiCharFold = NULL;
5b7de470 1173#ifdef USE_LOCALE_CTYPE
780fcc9f 1174 PL_warn_locale = NULL;
5b7de470 1175#endif
9fa9f06b
KW
1176 PL_Latin1 = NULL;
1177 PL_NonL1NonFinalFold = NULL;
1178 PL_UpperLatin1 = NULL;
86f72d56 1179 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1180 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1181 PL_XPosix_ptrs[i] = NULL;
86f72d56 1182 }
64935bc6 1183 PL_GCB_invlist = NULL;
6b659339 1184 PL_LB_invlist = NULL;
06ae2722 1185 PL_SB_invlist = NULL;
ae3bb8ea 1186 PL_WB_invlist = NULL;
9e7ded3f 1187 PL_Assigned_invlist = NULL;
5c831c24 1188
971a9dd3 1189 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1190 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1191 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1192 cophh_free(CopHINTHASH_get(&PL_compiling));
1193 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1194 CopFILE_free(&PL_compiling);
5c831c24 1195
a0d0e21e 1196 /* Prepare to destruct main symbol table. */
5f05dabc 1197
3280af22 1198 hv = PL_defstash;
ca556bcd 1199 /* break ref loop *:: <=> %:: */
854da30f 1200 (void)hv_deletes(hv, "main::", G_DISCARD);
3280af22 1201 PL_defstash = 0;
a0d0e21e 1202 SvREFCNT_dec(hv);
5c831c24 1203 SvREFCNT_dec(PL_curstname);
a0714e2c 1204 PL_curstname = NULL;
a0d0e21e 1205
5a844595
GS
1206 /* clear queued errors */
1207 SvREFCNT_dec(PL_errors);
a0714e2c 1208 PL_errors = NULL;
5a844595 1209
dd69841b
BB
1210 SvREFCNT_dec(PL_isarev);
1211
a0d0e21e 1212 FREETMPS;
9b387841 1213 if (destruct_level >= 2) {
3280af22 1214 if (PL_scopestack_ix != 0)
9b387841
NC
1215 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1216 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1217 (long)PL_scopestack_ix);
3280af22 1218 if (PL_savestack_ix != 0)
9b387841
NC
1219 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1220 "Unbalanced saves: %ld more saves than restores\n",
1221 (long)PL_savestack_ix);
3280af22 1222 if (PL_tmps_floor != -1)
9b387841
NC
1223 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1224 (long)PL_tmps_floor + 1);
a0d0e21e 1225 if (cxstack_ix != -1)
9b387841
NC
1226 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1227 (long)cxstack_ix + 1);
a0d0e21e 1228 }
8990e307 1229
0547a729
DM
1230#ifdef USE_ITHREADS
1231 SvREFCNT_dec(PL_regex_padav);
1232 PL_regex_padav = NULL;
1233 PL_regex_pad = NULL;
1234#endif
1235
776df701 1236#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1237 /* the entries in this list are allocated via SV PVX's, so get freed
1238 * in sv_clean_all */
1239 Safefree(PL_my_cxt_list);
776df701 1240#endif
57bb2458 1241
8990e307 1242 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1243
1244 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1245 while (sv_clean_all() > 2)
5226ed68
JH
1246 ;
1247
23083432
FC
1248#ifdef USE_ITHREADS
1249 Safefree(PL_stashpad); /* must come after sv_clean_all */
1250#endif
1251
d4777f27
GS
1252 AvREAL_off(PL_fdpid); /* no surviving entries */
1253 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1254 PL_fdpid = NULL;
d33b2eba 1255
6c644e78
GS
1256#ifdef HAVE_INTERP_INTERN
1257 sys_intern_clear();
1258#endif
1259
a38ab475
RZ
1260 /* constant strings */
1261 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1262 SvREFCNT_dec(PL_sv_consts[i]);
1263 PL_sv_consts[i] = NULL;
1264 }
1265
6e72f9df
PP
1266 /* Destruct the global string table. */
1267 {
1268 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1269 * so that sv_free() won't fail on them.
80459961
NC
1270 * Now that the global string table is using a single hunk of memory
1271 * for both HE and HEK, we either need to explicitly unshare it the
1272 * correct way, or actually free things here.
6e72f9df 1273 */
80459961
NC
1274 I32 riter = 0;
1275 const I32 max = HvMAX(PL_strtab);
c4420975 1276 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1277 HE *hent = array[0];
1278
6e72f9df 1279 for (;;) {
0453d815 1280 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1281 HE * const next = HeNEXT(hent);
9014280d 1282 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1283 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1284 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1285 Safefree(hent);
1286 hent = next;
6e72f9df
PP
1287 }
1288 if (!hent) {
1289 if (++riter > max)
1290 break;
1291 hent = array[riter];
1292 }
1293 }
80459961
NC
1294
1295 Safefree(array);
1296 HvARRAY(PL_strtab) = 0;
1297 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1298 }
3280af22 1299 SvREFCNT_dec(PL_strtab);
6e72f9df 1300
e652bb2f 1301#ifdef USE_ITHREADS
c21d1a0f 1302 /* free the pointer tables used for cloning */
a0739874 1303 ptr_table_free(PL_ptr_table);
bf9cdc68 1304 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1305#endif
a0739874 1306
d33b2eba
GS
1307 /* free special SVs */
1308
1309 SvREFCNT(&PL_sv_yes) = 0;
1310 sv_clear(&PL_sv_yes);
1311 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1312 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1313
1314 SvREFCNT(&PL_sv_no) = 0;
1315 sv_clear(&PL_sv_no);
1316 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1317 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1318
5a6c2837
DM
1319 SvREFCNT(&PL_sv_zero) = 0;
1320 sv_clear(&PL_sv_zero);
1321 SvANY(&PL_sv_zero) = NULL;
1322 SvFLAGS(&PL_sv_zero) = 0;
1323
9f375a43
DM
1324 {
1325 int i;
1326 for (i=0; i<=2; i++) {
1327 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1328 sv_clear(PERL_DEBUG_PAD(i));
1329 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1330 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1331 }
1332 }
1333
0453d815 1334 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1335 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1336
eba0f806
DM
1337#ifdef DEBUG_LEAKING_SCALARS
1338 if (PL_sv_count != 0) {
1339 SV* sva;
1340 SV* sv;
eb578fdb 1341 SV* svend;
eba0f806 1342
ad64d0ec 1343 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1344 svend = &sva[SvREFCNT(sva)];
1345 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1346 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1347 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1348 " flags=0x%"UVxf
fd0854ff 1349 " refcnt=%"UVuf pTHX__FORMAT "\n"
147e3846
KW
1350 "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");"
1351 "serial %" UVuf "\n",
574b8821
NC
1352 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1353 pTHX__VALUE,
fd0854ff
DM
1354 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1355 sv->sv_debug_line,
1356 sv->sv_debug_inpad ? "for" : "by",
1357 sv->sv_debug_optype ?
1358 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1359 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1360 sv->sv_debug_serial
fd0854ff 1361 );
2aa47728 1362#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1363 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1364#endif
eba0f806
DM
1365 }
1366 }
1367 }
1368 }
2aa47728
NC
1369#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1370 {
1371 int status;
1372 fd_set rset;
1373 /* Wait for up to 4 seconds for child to terminate.
1374 This seems to be the least effort way of timing out on reaping
1375 its exit status. */
1376 struct timeval waitfor = {4, 0};
41e4abd8 1377 int sock = PL_dumper_fd;
2aa47728
NC
1378
1379 shutdown(sock, 1);
1380 FD_ZERO(&rset);
1381 FD_SET(sock, &rset);
1382 select(sock + 1, &rset, NULL, NULL, &waitfor);
1383 waitpid(child, &status, WNOHANG);
1384 close(sock);
1385 }
1386#endif
eba0f806 1387#endif
77abb4c6
NC
1388#ifdef DEBUG_LEAKING_SCALARS_ABORT
1389 if (PL_sv_count)
1390 abort();
1391#endif
bf9cdc68 1392 PL_sv_count = 0;
eba0f806 1393
56a2bab7 1394#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1395 /* No more IO - including error messages ! */
1396 PerlIO_cleanup(aTHX);
1397#endif
1398
9f4bd222 1399 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1400 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1401 for no arg - and will try and SvREFCNT_dec it.
1402 */
1403 SvREFCNT(&PL_sv_undef) = 0;
1404 SvREADONLY_off(&PL_sv_undef);
1405
3280af22 1406 Safefree(PL_origfilename);
bd61b366 1407 PL_origfilename = NULL;
43c5f42d 1408 Safefree(PL_reg_curpm);
dd28f7bb 1409 free_tied_hv_pool();
3280af22 1410 Safefree(PL_op_mask);
cf36064f 1411 Safefree(PL_psig_name);
bf9cdc68 1412 PL_psig_name = (SV**)NULL;
d525a7b2 1413 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1414 {
1415 /* We need to NULL PL_psig_pend first, so that
1416 signal handlers know not to use it */
1417 int *psig_save = PL_psig_pend;
1418 PL_psig_pend = (int*)NULL;
1419 Safefree(psig_save);
1420 }
6e72f9df 1421 nuke_stacks();
284167a5
SM
1422 TAINTING_set(FALSE);
1423 TAINT_WARN_set(FALSE);
3280af22 1424 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1425
a0d0e21e 1426 DEBUG_P(debprofdump());
d33b2eba 1427
b173165c
FC
1428 PL_debug = 0;
1429
e5dd39fc 1430#ifdef USE_REENTRANT_API
10bc17b6 1431 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1432#endif
1433
a24da70b
NC
1434 /* These all point to HVs that are about to be blown away.
1435 Code in core and on CPAN assumes that if the interpreter is re-started
1436 that they will be cleanly NULL or pointing to a valid HV. */
1437 PL_custom_op_names = NULL;
1438 PL_custom_op_descs = NULL;
1439 PL_custom_ops = NULL;
1440
612f20c3
GS
1441 sv_free_arenas();
1442
5d9a96ca
DM
1443 while (PL_regmatch_slab) {
1444 regmatch_slab *s = PL_regmatch_slab;
1445 PL_regmatch_slab = PL_regmatch_slab->next;
1446 Safefree(s);
1447 }
1448
fc36a67e
PP
1449 /* As the absolutely last thing, free the non-arena SV for mess() */
1450
3280af22 1451 if (PL_mess_sv) {
f350b448
NC
1452 /* we know that type == SVt_PVMG */
1453
9c63abab 1454 /* it could have accumulated taint magic */
f350b448
NC
1455 MAGIC* mg;
1456 MAGIC* moremagic;
1457 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1458 moremagic = mg->mg_moremagic;
1459 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1460 && mg->mg_len >= 0)
1461 Safefree(mg->mg_ptr);
1462 Safefree(mg);
9c63abab 1463 }
f350b448 1464
fc36a67e 1465 /* we know that type >= SVt_PV */
8bd4d4c5 1466 SvPV_free(PL_mess_sv);
3280af22
NIS
1467 Safefree(SvANY(PL_mess_sv));
1468 Safefree(PL_mess_sv);
a0714e2c 1469 PL_mess_sv = NULL;
fc36a67e 1470 }
37038d91 1471 return STATUS_EXIT;
79072805
LW
1472}
1473
954c1994
GS
1474/*
1475=for apidoc perl_free
1476
1477Releases a Perl interpreter. See L<perlembed>.
1478
1479=cut
1480*/
1481
79072805 1482void
0cb96387 1483perl_free(pTHXx)
79072805 1484{
5174512c
NC
1485 dVAR;
1486
7918f24d
NC
1487 PERL_ARGS_ASSERT_PERL_FREE;
1488
c301d606
DM
1489 if (PL_veto_cleanup)
1490 return;
1491
7cb608b5 1492#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1493 {
1494 /*
1495 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1496 * value as we're probably hunting memory leaks then
1497 */
36e77d41 1498 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1499 const U32 old_debug = PL_debug;
55ef9aae
MHM
1500 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1501 thread at thread exit. */
4fd0a9b8
NC
1502 if (DEBUG_m_TEST) {
1503 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1504 "free this thread's memory\n");
1505 PL_debug &= ~ DEBUG_m_FLAG;
1506 }
6edcbed6
DD
1507 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1508 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1509 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1510 safesysfree(ptr);
1511 }
4fd0a9b8 1512 PL_debug = old_debug;
55ef9aae
MHM
1513 }
1514 }
7cb608b5
NC
1515#endif
1516
acfe0abc 1517#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1518# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1519 {
acfe0abc 1520# ifdef NETWARE
7af12a34 1521 void *host = nw_internal_host;
7af12a34 1522 PerlMem_free(aTHXx);
7af12a34 1523 nw_delete_internal_host(host);
acfe0abc 1524# else
bdb50480
NC
1525 void *host = w32_internal_host;
1526 PerlMem_free(aTHXx);
7af12a34 1527 win32_delete_internal_host(host);
acfe0abc 1528# endif
7af12a34 1529 }
1c0ca838
GS
1530# else
1531 PerlMem_free(aTHXx);
1532# endif
acfe0abc
GS
1533#else
1534 PerlMem_free(aTHXx);
76e3520e 1535#endif
79072805
LW
1536}
1537
b7f7fff6 1538#if defined(USE_ITHREADS)
aebd1ac7
GA
1539/* provide destructors to clean up the thread key when libperl is unloaded */
1540#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1541
826955bd 1542#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1543#pragma fini "perl_fini"
666ad1ec
GA
1544#elif defined(__sun) && !defined(__GNUC__)
1545#pragma fini (perl_fini)
aebd1ac7
GA
1546#endif
1547
0dbb1585
AL
1548static void
1549#if defined(__GNUC__)
1550__attribute__((destructor))
aebd1ac7 1551#endif
de009b76 1552perl_fini(void)
aebd1ac7 1553{
27da23d5 1554 dVAR;
5c64bffd
NC
1555 if (
1556#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1557 my_vars &&
1558#endif
1559 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1560 FREE_THREAD_KEY;
1561}
1562
1563#endif /* WIN32 */
1564#endif /* THREADS */
1565
4b556e6c 1566void
864dbfa3 1567Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1568{
3280af22
NIS
1569 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1570 PL_exitlist[PL_exitlistlen].fn = fn;
1571 PL_exitlist[PL_exitlistlen].ptr = ptr;
1572 ++PL_exitlistlen;
4b556e6c
JD
1573}
1574
954c1994
GS
1575/*
1576=for apidoc perl_parse
1577
1578Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1579
1580=cut
1581*/
1582
03d9f026
FC
1583#define SET_CURSTASH(newstash) \
1584 if (PL_curstash != newstash) { \
1585 SvREFCNT_dec(PL_curstash); \
1586 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1587 }
1588
79072805 1589int
0cb96387 1590perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1591{
27da23d5 1592 dVAR;
6224f72b 1593 I32 oldscope;
6224f72b 1594 int ret;
db36c5a1 1595 dJMPENV;
8d063cd8 1596
7918f24d
NC
1597 PERL_ARGS_ASSERT_PERL_PARSE;
1598#ifndef MULTIPLICITY
ed6c66dd 1599 PERL_UNUSED_ARG(my_perl);
7918f24d 1600#endif
1a237f4f 1601#if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG)
b0891165 1602 {
7dc86639
YO
1603 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1604
22ff3130 1605 if (s && strEQ(s, "1")) {
25c1b134
TC
1606 const unsigned char *seed= PERL_HASH_SEED;
1607 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1608 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1609 while (seed < seed_end) {
1610 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1611 }
6a5b4183
YO
1612#ifdef PERL_HASH_RANDOMIZE_KEYS
1613 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1614 PL_HASH_RAND_BITS_ENABLED,
1615 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1616#endif
7dc86639
YO
1617 PerlIO_printf(Perl_debug_log, "\n");
1618 }
b0891165 1619 }
1a237f4f 1620#endif /* #if (defined(USE_HASH_SEED) ... */
43238333 1621
ea34f6bd 1622#ifdef __amigaos4__
43238333
AB
1623 {
1624 struct NameTranslationInfo nti;
1625 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1626 }
1627#endif
1628
3280af22 1629 PL_origargc = argc;
e2975953 1630 PL_origargv = argv;
a0d0e21e 1631
a2722ac9
GA
1632 if (PL_origalen != 0) {
1633 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1634 }
1635 else {
3cb9023d
JH
1636 /* Set PL_origalen be the sum of the contiguous argv[]
1637 * elements plus the size of the env in case that it is
e9137a8e 1638 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1639 * as the maximum modifiable length of $0. In the worst case
1640 * the area we are able to modify is limited to the size of
43c32782 1641 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1642 * --jhi */
e1ec3a88 1643 const char *s = NULL;
b7249aaf 1644 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1645 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1646 const UV aligned =
43c32782
JH
1647 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1648
1649 /* See if all the arguments are contiguous in memory. Note
1650 * that 'contiguous' is a loose term because some platforms
1651 * align the argv[] and the envp[]. If the arguments look
1652 * like non-aligned, assume that they are 'strictly' or
1653 * 'traditionally' contiguous. If the arguments look like
1654 * aligned, we just check that they are within aligned
1655 * PTRSIZE bytes. As long as no system has something bizarre
1656 * like the argv[] interleaved with some other data, we are
1657 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb 1658 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
19742f39 1659 int i;
c8941eeb
JH
1660 while (*s) s++;
1661 for (i = 1; i < PL_origargc; i++) {
1662 if ((PL_origargv[i] == s + 1
43c32782 1663#ifdef OS2
c8941eeb 1664 || PL_origargv[i] == s + 2
43c32782 1665#endif
c8941eeb
JH
1666 )
1667 ||
1668 (aligned &&
1669 (PL_origargv[i] > s &&
1670 PL_origargv[i] <=
1671 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1672 )
1673 {
1674 s = PL_origargv[i];
1675 while (*s) s++;
1676 }
1677 else
1678 break;
54bfe034 1679 }
54bfe034 1680 }
a4a109c2
JD
1681
1682#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1683 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1684 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1685 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1686 ||
1687 (aligned &&
1688 (PL_origenviron[0] > s &&
1689 PL_origenviron[0] <=
1690 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1691 )
1692 {
19742f39 1693 int i;
9d419b5f 1694#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1695 s = PL_origenviron[0];
1696 while (*s) s++;
1697#endif
bd61b366 1698 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1699 /* Force copy of environment. */
1700 for (i = 1; PL_origenviron[i]; i++) {
1701 if (PL_origenviron[i] == s + 1
1702 ||
1703 (aligned &&
1704 (PL_origenviron[i] > s &&
1705 PL_origenviron[i] <=
1706 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1707 )
1708 {
1709 s = PL_origenviron[i];
1710 while (*s) s++;
1711 }
1712 else
1713 break;
54bfe034 1714 }
43c32782 1715 }
54bfe034 1716 }
a4a109c2
JD
1717#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1718
2d2af554 1719 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1720 }
1721
3280af22 1722 if (PL_do_undump) {
a0d0e21e
LW
1723
1724 /* Come here if running an undumped a.out. */
1725
3280af22
NIS
1726 PL_origfilename = savepv(argv[0]);
1727 PL_do_undump = FALSE;
a0d0e21e 1728 cxstack_ix = -1; /* start label stack again */
748a9306 1729 init_ids();
284167a5 1730 assert (!TAINT_get);
b7975bdd 1731 TAINT;
e2051532 1732 set_caret_X();
b7975bdd 1733 TAINT_NOT;
a0d0e21e
LW
1734 init_postdump_symbols(argc,argv,env);
1735 return 0;
1736 }
1737
3280af22 1738 if (PL_main_root) {
3280af22 1739 op_free(PL_main_root);
5f66b61c 1740 PL_main_root = NULL;
ff0cee69 1741 }
5f66b61c 1742 PL_main_start = NULL;
3280af22 1743 SvREFCNT_dec(PL_main_cv);
601f1833 1744 PL_main_cv = NULL;
79072805 1745
3280af22
NIS
1746 time(&PL_basetime);
1747 oldscope = PL_scopestack_ix;
599cee73 1748 PL_dowarn = G_WARN_OFF;
f86702cc 1749
14dd3ad8 1750 JMPENV_PUSH(ret);
6224f72b 1751 switch (ret) {
312caa8e 1752 case 0:
14dd3ad8 1753 parse_body(env,xsinit);
9ebf26ad 1754 if (PL_unitcheckav) {
3c10abe3 1755 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1756 }
1757 if (PL_checkav) {
ca7b837b 1758 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1759 call_list(oldscope, PL_checkav);
9ebf26ad 1760 }
14dd3ad8
GS
1761 ret = 0;
1762 break;
6224f72b
GS
1763 case 1:
1764 STATUS_ALL_FAILURE;
924ba076 1765 /* FALLTHROUGH */
6224f72b
GS
1766 case 2:
1767 /* my_exit() was called */
3280af22 1768 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1769 LEAVE;
1770 FREETMPS;
03d9f026 1771 SET_CURSTASH(PL_defstash);
9ebf26ad 1772 if (PL_unitcheckav) {
3c10abe3 1773 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1774 }
1775 if (PL_checkav) {
ca7b837b 1776 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1777 call_list(oldscope, PL_checkav);
9ebf26ad 1778 }
37038d91 1779 ret = STATUS_EXIT;
14dd3ad8 1780 break;
6224f72b 1781 case 3:
bf49b057 1782 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1783 ret = 1;
1784 break;
6224f72b 1785 }
14dd3ad8
GS
1786 JMPENV_POP;
1787 return ret;
1788}
1789
4a5df386
NC
1790/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1791 miniperl, and we need to see those flags reflected in the values here. */
1792
1793/* What this returns is subject to change. Use the public interface in Config.
1794 */
1795static void
1796S_Internals_V(pTHX_ CV *cv)
1797{
1798 dXSARGS;
1799#ifdef LOCAL_PATCH_COUNT
1800 const int local_patch_count = LOCAL_PATCH_COUNT;
1801#else
1802 const int local_patch_count = 0;
1803#endif
2dc296d2 1804 const int entries = 3 + local_patch_count;
4a5df386 1805 int i;
fe1c5936 1806 static const char non_bincompat_options[] =
4a5df386
NC
1807# ifdef DEBUGGING
1808 " DEBUGGING"
1809# endif
1810# ifdef NO_MATHOMS
0d311fbe 1811 " NO_MATHOMS"
4a5df386 1812# endif
59b86f4b
DM
1813# ifdef NO_HASH_SEED
1814 " NO_HASH_SEED"
1815# endif
3b0e4ee2
MB
1816# ifdef NO_TAINT_SUPPORT
1817 " NO_TAINT_SUPPORT"
1818# endif
cb26ef7a
MB
1819# ifdef PERL_BOOL_AS_CHAR
1820 " PERL_BOOL_AS_CHAR"
1821# endif
93c10d60
FC
1822# ifdef PERL_COPY_ON_WRITE
1823 " PERL_COPY_ON_WRITE"
1824# endif
4a5df386
NC
1825# ifdef PERL_DISABLE_PMC
1826 " PERL_DISABLE_PMC"
1827# endif
1828# ifdef PERL_DONT_CREATE_GVSV
1829 " PERL_DONT_CREATE_GVSV"
1830# endif
9a044a43
NC
1831# ifdef PERL_EXTERNAL_GLOB
1832 " PERL_EXTERNAL_GLOB"
1833# endif
59b86f4b
DM
1834# ifdef PERL_HASH_FUNC_SIPHASH
1835 " PERL_HASH_FUNC_SIPHASH"
1836# endif
1837# ifdef PERL_HASH_FUNC_SDBM
1838 " PERL_HASH_FUNC_SDBM"
1839# endif
1840# ifdef PERL_HASH_FUNC_DJB2
1841 " PERL_HASH_FUNC_DJB2"
1842# endif
1843# ifdef PERL_HASH_FUNC_SUPERFAST
1844 " PERL_HASH_FUNC_SUPERFAST"
1845# endif
1846# ifdef PERL_HASH_FUNC_MURMUR3
1847 " PERL_HASH_FUNC_MURMUR3"
1848# endif
1849# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1850 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1851# endif
1852# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1853 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1854# endif
1855# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1856 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1857# endif
4a5df386
NC
1858# ifdef PERL_IS_MINIPERL
1859 " PERL_IS_MINIPERL"
1860# endif
1861# ifdef PERL_MALLOC_WRAP
1862 " PERL_MALLOC_WRAP"
1863# endif
1864# ifdef PERL_MEM_LOG
1865 " PERL_MEM_LOG"
1866# endif
1867# ifdef PERL_MEM_LOG_NOIMPL
1868 " PERL_MEM_LOG_NOIMPL"
1869# endif
4e499636
DM
1870# ifdef PERL_OP_PARENT
1871 " PERL_OP_PARENT"
1872# endif
59b86f4b
DM
1873# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1874 " PERL_PERTURB_KEYS_DETERMINISTIC"
1875# endif
1876# ifdef PERL_PERTURB_KEYS_DISABLED
1877 " PERL_PERTURB_KEYS_DISABLED"
1878# endif
1879# ifdef PERL_PERTURB_KEYS_RANDOM
1880 " PERL_PERTURB_KEYS_RANDOM"
1881# endif
c3cf41ec
NC
1882# ifdef PERL_PRESERVE_IVUV
1883 " PERL_PRESERVE_IVUV"
1884# endif
c051e30b
NC
1885# ifdef PERL_RELOCATABLE_INCPUSH
1886 " PERL_RELOCATABLE_INCPUSH"
1887# endif
4a5df386
NC
1888# ifdef PERL_USE_DEVEL
1889 " PERL_USE_DEVEL"
1890# endif
1891# ifdef PERL_USE_SAFE_PUTENV
1892 " PERL_USE_SAFE_PUTENV"
1893# endif
102b7877
YO
1894# ifdef SILENT_NO_TAINT_SUPPORT
1895 " SILENT_NO_TAINT_SUPPORT"
1896# endif
a3749cf3
NC
1897# ifdef UNLINK_ALL_VERSIONS
1898 " UNLINK_ALL_VERSIONS"
1899# endif
de618ee4
NC
1900# ifdef USE_ATTRIBUTES_FOR_PERLIO
1901 " USE_ATTRIBUTES_FOR_PERLIO"
1902# endif
4a5df386
NC
1903# ifdef USE_FAST_STDIO
1904 " USE_FAST_STDIO"
1905# endif
98548bdf
NC
1906# ifdef USE_LOCALE
1907 " USE_LOCALE"
1908# endif
98548bdf
NC
1909# ifdef USE_LOCALE_CTYPE
1910 " USE_LOCALE_CTYPE"
1911# endif
6937817d
DD
1912# ifdef WIN32_NO_REGISTRY
1913 " USE_NO_REGISTRY"
1914# endif
5a8d8935
NC
1915# ifdef USE_PERL_ATOF
1916 " USE_PERL_ATOF"
1917# endif
0d311fbe
NC
1918# ifdef USE_SITECUSTOMIZE
1919 " USE_SITECUSTOMIZE"
1920# endif
4a5df386
NC
1921 ;
1922 PERL_UNUSED_ARG(cv);
d3db1514 1923 PERL_UNUSED_VAR(items);
4a5df386
NC
1924
1925 EXTEND(SP, entries);
1926
1927 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1928 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1929 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1930
6baa8dbd
NT
1931#ifndef PERL_BUILD_DATE
1932# ifdef __DATE__
1933# ifdef __TIME__
1934# define PERL_BUILD_DATE __DATE__ " " __TIME__
1935# else
1936# define PERL_BUILD_DATE __DATE__
1937# endif
1938# endif
1939#endif
1940
1941#ifdef PERL_BUILD_DATE
4a5df386 1942 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1943 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1944 SVs_TEMP));
4a5df386
NC
1945#else
1946 PUSHs(&PL_sv_undef);
1947#endif
1948
4a5df386
NC
1949 for (i = 1; i <= local_patch_count; i++) {
1950 /* This will be an undef, if PL_localpatches[i] is NULL. */
1951 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1952 }
1953
1954 XSRETURN(entries);
1955}
1956
be71fc8f
NC
1957#define INCPUSH_UNSHIFT 0x01
1958#define INCPUSH_ADD_OLD_VERS 0x02
1959#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1960#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1961#define INCPUSH_NOT_BASEDIR 0x10
1962#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1963#define INCPUSH_ADD_SUB_DIRS \
1964 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1965
312caa8e 1966STATIC void *
14dd3ad8 1967S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1968{
27da23d5 1969 dVAR;
2f9285f8 1970 PerlIO *rsfp;
312caa8e 1971 int argc = PL_origargc;
8f42b153 1972 char **argv = PL_origargv;
e1ec3a88 1973 const char *scriptname = NULL;
402582ca 1974 bool dosearch = FALSE;
eb578fdb 1975 char c;
737c24fc 1976 bool doextract = FALSE;
bd61b366 1977 const char *cddir = NULL;
ab019eaa 1978#ifdef USE_SITECUSTOMIZE
20ef40cf 1979 bool minus_f = FALSE;
ab019eaa 1980#endif
95670bde 1981 SV *linestr_sv = NULL;
5486870f 1982 bool add_read_e_script = FALSE;
87606032 1983 U32 lex_start_flags = 0;
009d90df 1984
ca7b837b 1985 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1986
6224f72b 1987 init_main_stash();
54310121 1988
c7030b81
NC
1989 {
1990 const char *s;
6224f72b
GS
1991 for (argc--,argv++; argc > 0; argc--,argv++) {
1992 if (argv[0][0] != '-' || !argv[0][1])
1993 break;
6224f72b
GS
1994 s = argv[0]+1;
1995 reswitch:
47f56822 1996 switch ((c = *s)) {
729a02f2 1997 case 'C':
1d5472a9
GS
1998#ifndef PERL_STRICT_CR
1999 case '\r':
2000#endif
6224f72b
GS
2001 case ' ':
2002 case '0':
2003 case 'F':
2004 case 'a':
2005 case 'c':
2006 case 'd':
2007 case 'D':
2008 case 'h':
2009 case 'i':
2010 case 'l':
2011 case 'M':
2012 case 'm':
2013 case 'n':
2014 case 'p':
2015 case 's':
2016 case 'u':
2017 case 'U':
2018 case 'v':
599cee73
PM
2019 case 'W':
2020 case 'X':
6224f72b 2021 case 'w':
97bd5664 2022 if ((s = moreswitches(s)))
6224f72b
GS
2023 goto reswitch;
2024 break;
33b78306 2025
1dbad523 2026 case 't':
dc6d7f5c 2027#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2028 /* silently ignore */
dc6d7f5c 2029#elif defined(NO_TAINT_SUPPORT)
3231f579 2030 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2031 "Cowardly refusing to run with -t or -T flags");
2032#else
22f7c9c9 2033 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
2034 if( !TAINTING_get ) {
2035 TAINT_WARN_set(TRUE);
2036 TAINTING_set(TRUE);
317ea90d 2037 }
284167a5 2038#endif
317ea90d
MS
2039 s++;
2040 goto reswitch;
6224f72b 2041 case 'T':
dc6d7f5c 2042#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2043 /* silently ignore */
dc6d7f5c 2044#elif defined(NO_TAINT_SUPPORT)
3231f579 2045 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2046 "Cowardly refusing to run with -t or -T flags");
2047#else
22f7c9c9 2048 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2049 TAINTING_set(TRUE);
2050 TAINT_WARN_set(FALSE);
2051#endif
6224f72b
GS
2052 s++;
2053 goto reswitch;
f86702cc 2054
bc9b29db
RH
2055 case 'E':
2056 PL_minus_E = TRUE;
924ba076 2057 /* FALLTHROUGH */
6224f72b 2058 case 'e':
f20b2998 2059 forbid_setid('e', FALSE);
3280af22 2060 if (!PL_e_script) {
396482e1 2061 PL_e_script = newSVpvs("");
5486870f 2062 add_read_e_script = TRUE;
6224f72b
GS
2063 }
2064 if (*++s)
3280af22 2065 sv_catpv(PL_e_script, s);
6224f72b 2066 else if (argv[1]) {
3280af22 2067 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
2068 argc--,argv++;
2069 }
2070 else
47f56822 2071 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2072 sv_catpvs(PL_e_script, "\n");
6224f72b 2073 break;
afe37c7d 2074
20ef40cf 2075 case 'f':
f5542d3a 2076#ifdef USE_SITECUSTOMIZE
20ef40cf 2077 minus_f = TRUE;
f5542d3a 2078#endif
20ef40cf
GA
2079 s++;
2080 goto reswitch;
2081
6224f72b 2082 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2083 forbid_setid('I', FALSE);
bd61b366 2084 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
2085 argc--,argv++;
2086 }
6224f72b 2087 if (s && *s) {
0df16ed7 2088 STRLEN len = strlen(s);
55b4bc1c 2089 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
2090 }
2091 else
a67e862a 2092 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2093 break;
6224f72b 2094 case 'S':
f20b2998 2095 forbid_setid('S', FALSE);
6224f72b
GS
2096 dosearch = TRUE;
2097 s++;
2098 goto reswitch;
2099 case 'V':
7edfd0ef
NC
2100 {
2101 SV *opts_prog;
2102
7edfd0ef 2103 if (*++s != ':') {
37ca4a5b 2104 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2105 }
2106 else {
2107 ++s;
2108 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2109 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2110 0, s, 0);
2111 s += strlen(s);
2112 }
37ca4a5b 2113 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2114 /* don't look for script or read stdin */
2115 scriptname = BIT_BUCKET;
2116 goto reswitch;
6224f72b 2117 }
6224f72b 2118 case 'x':
737c24fc 2119 doextract = TRUE;
6224f72b 2120 s++;
304334da 2121 if (*s)
f4c556ac 2122 cddir = s;
6224f72b
GS
2123 break;
2124 case 0:
2125 break;
2126 case '-':
2127 if (!*++s || isSPACE(*s)) {
2128 argc--,argv++;
2129 goto switch_end;
2130 }
ee8bc8b7
NC
2131 /* catch use of gnu style long options.
2132 Both of these exit immediately. */
2133 if (strEQ(s, "version"))
2134 minus_v();
2135 if (strEQ(s, "help"))
2136 usage();
6224f72b 2137 s--;
924ba076 2138 /* FALLTHROUGH */
6224f72b 2139 default:
cea2e8a9 2140 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2141 }
2142 }
c7030b81
NC
2143 }
2144
6224f72b 2145 switch_end:
54310121 2146
c7030b81
NC
2147 {
2148 char *s;
2149
f675dbe5
CB
2150 if (
2151#ifndef SECURE_INTERNAL_GETENV
284167a5 2152 !TAINTING_get &&
f675dbe5 2153#endif
cf756827 2154 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2155 {
9e0b0d62
KW
2156 /* s points to static memory in getenv(), which may be overwritten at
2157 * any time; use a mortal copy instead */
2158 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2159
74288ac8
GS
2160 while (isSPACE(*s))
2161 s++;
317ea90d 2162 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2163#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2164 /* silently ignore */
dc6d7f5c 2165#elif defined(NO_TAINT_SUPPORT)
3231f579 2166 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2167 "Cowardly refusing to run with -t or -T flags");
2168#else
22f7c9c9 2169 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2170 TAINTING_set(TRUE);
2171 TAINT_WARN_set(FALSE);
2172#endif
317ea90d 2173 }
74288ac8 2174 else {
bd61b366 2175 char *popt_copy = NULL;
74288ac8 2176 while (s && *s) {
54913509 2177 const char *d;
74288ac8
GS
2178 while (isSPACE(*s))
2179 s++;
2180 if (*s == '-') {
2181 s++;
2182 if (isSPACE(*s))
2183 continue;
2184 }
4ea8f8fb 2185 d = s;
74288ac8
GS
2186 if (!*s)
2187 break;
2b622f1a 2188 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2189 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2190 while (++s && *s) {
2191 if (isSPACE(*s)) {
cf756827 2192 if (!popt_copy) {
bfa6c418
NC
2193 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2194 s = popt_copy + (s - d);
2195 d = popt_copy;
cf756827 2196 }
4ea8f8fb
MS
2197 *s++ = '\0';
2198 break;
2199 }
2200 }
1c4db469 2201 if (*d == 't') {
dc6d7f5c 2202#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2203 /* silently ignore */
dc6d7f5c 2204#elif defined(NO_TAINT_SUPPORT)
3231f579 2205 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2206 "Cowardly refusing to run with -t or -T flags");
2207#else
2208 if( !TAINTING_get) {
2209 TAINT_WARN_set(TRUE);
2210 TAINTING_set(TRUE);
317ea90d 2211 }
284167a5 2212#endif
1c4db469 2213 } else {
97bd5664 2214 moreswitches(d);
1c4db469 2215 }
6224f72b 2216 }
6224f72b
GS
2217 }
2218 }
c7030b81 2219 }
a0d0e21e 2220
d6295071
TC
2221#ifndef NO_PERL_INTERNAL_RAND_SEED
2222 /* If we're not set[ug]id, we might have honored
2223 PERL_INTERNAL_RAND_SEED in perl_construct().
2224 At this point command-line options have been parsed, so if
2225 we're now tainting and not set[ug]id re-seed.
2226 This could possibly be wasteful if PERL_INTERNAL_RAND_SEED is invalid,
2227 but avoids duplicating the logic from perl_construct().
2228 */
2229 if (PL_tainting &&
2230 PerlProc_getuid() == PerlProc_geteuid() &&
2231 PerlProc_getgid() == PerlProc_getegid()) {
2232 Perl_drand48_init_r(&PL_internal_random_state, seed());
2233 }
2234#endif
2235
c29067d7
CH
2236 /* Set $^X early so that it can be used for relocatable paths in @INC */
2237 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2238 assert (!TAINT_get);
c29067d7 2239 TAINT;
e2051532 2240 set_caret_X();
c29067d7
CH
2241 TAINT_NOT;
2242
43c0c913 2243#if defined(USE_SITECUSTOMIZE)
20ef40cf 2244 if (!minus_f) {
43c0c913 2245 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2246 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2247 ie a q() operator with a NUL byte as a the delimiter. This avoids
2248 problems with pathnames containing (say) ' */
43c0c913
NC
2249# ifdef PERL_IS_MINIPERL
2250 AV *const inc = GvAV(PL_incgv);
2251 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2252
2253 if (inc0) {
15870c5c
NC
2254 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2255 it should be reported immediately as a build failure. */
43c0c913
NC
2256 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2257 Perl_newSVpvf(aTHX_
147e3846 2258 "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; "
af26e4f2
FC
2259 "do {local $!; -f $f }"
2260 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2261 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2262 }
2263# else
2264 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2265 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2266 if (raw_sitelib) {
2267 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2268 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2269 INCPUSH_CAN_RELOCATE);
2270 const char *const sitelib = SvPVX(sitelib_sv);
2271 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2272 Perl_newSVpvf(aTHX_
2273 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2274 0, SVfARG(sitelib), 0,
2275 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2276 assert (SvREFCNT(sitelib_sv) == 1);
2277 SvREFCNT_dec(sitelib_sv);
2278 }
43c0c913 2279# endif
20ef40cf
GA
2280 }
2281#endif
2282
6224f72b
GS
2283 if (!scriptname)
2284 scriptname = argv[0];
3280af22 2285 if (PL_e_script) {
6224f72b
GS
2286 argc++,argv--;
2287 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2288 }
bd61b366 2289 else if (scriptname == NULL) {
6224f72b
GS
2290#ifdef MSDOS
2291 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2292 moreswitches("h");
6224f72b
GS
2293#endif
2294 scriptname = "-";
2295 }
2296
284167a5 2297 assert (!TAINT_get);
2cace6ac 2298 init_perllib();
6224f72b 2299
a52eba0e 2300 {
f20b2998 2301 bool suidscript = FALSE;
829372d3 2302
8d113837 2303 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2304 if (!rsfp) {
2305 rsfp = PerlIO_stdin();
87606032 2306 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2307 }
6224f72b 2308
b24bc095 2309 validate_suid(rsfp);
6224f72b 2310
64ca3a65 2311#ifndef PERL_MICRO
a52eba0e
NC
2312# if defined(SIGCHLD) || defined(SIGCLD)
2313 {
2314# ifndef SIGCHLD
2315# define SIGCHLD SIGCLD
2316# endif
2317 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2318 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2319 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2320 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2321 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2322 }
0b5b802d 2323 }
a52eba0e 2324# endif
64ca3a65 2325#endif
0b5b802d 2326
737c24fc 2327 if (doextract) {
faef540c 2328
f20b2998 2329 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2330 setuid scripts. */
2331 forbid_setid('x', suidscript);
f20b2998 2332 /* Hence you can't get here if suidscript is true */
faef540c 2333
95670bde
NC
2334 linestr_sv = newSV_type(SVt_PV);
2335 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2336 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2337 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2338 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2339 }
f4c556ac 2340 }
6224f72b 2341
ea726b52 2342 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2343 CvUNIQUE_on(PL_compcv);
2344
eacbb379 2345 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2346
dd69841b
BB
2347 PL_isarev = newHV();
2348
0c4f7ff0 2349 boot_core_PerlIO();
6224f72b 2350 boot_core_UNIVERSAL();
e1a479c5 2351 boot_core_mro();
4a5df386 2352 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2353
2354 if (xsinit)
acfe0abc 2355 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2356#ifndef PERL_MICRO
739a0b84 2357#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2358 init_os_extras();
6224f72b 2359#endif
64ca3a65 2360#endif
6224f72b 2361
29209bc5 2362#ifdef USE_SOCKS
1b9c9cf5
DH
2363# ifdef HAS_SOCKS5_INIT
2364 socks5_init(argv[0]);
2365# else
29209bc5 2366 SOCKSinit(argv[0]);
1b9c9cf5 2367# endif
ac27b0f5 2368#endif
29209bc5 2369
6224f72b
GS
2370 init_predump_symbols();
2371 /* init_postdump_symbols not currently designed to be called */
2372 /* more than once (ENV isn't cleared first, for example) */
2373 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2374 if (!PL_do_undump)
6224f72b
GS
2375 init_postdump_symbols(argc,argv,env);
2376
27da23d5
JH
2377 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2378 * or explicitly in some platforms.
73e1bd1a 2379 * PL_utf8locale is conditionally turned on by
085a54d9 2380 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2381 * look like the user wants to use UTF-8. */
a0fd4948 2382#if defined(__SYMBIAN32__)
27da23d5
JH
2383 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2384#endif
e27b5b51 2385# ifndef PERL_IS_MINIPERL
06e66572
JH
2386 if (PL_unicode) {
2387 /* Requires init_predump_symbols(). */
a05d7ebb 2388 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2389 IO* io;
2390 PerlIO* fp;
2391 SV* sv;
2392
a05d7ebb 2393 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2394 * and the default open disciplines. */
a05d7ebb
JH
2395 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2396 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2397 (fp = IoIFP(io)))
2398 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2399 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2400 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2401 (fp = IoOFP(io)))
2402 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2403 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2404 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2405 (fp = IoOFP(io)))
2406 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2407 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2408 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2409 SVt_PV)))) {
a05d7ebb
JH
2410 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2411 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2412 if (in) {
2413 if (out)
76f68e9b 2414 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2415 else
76f68e9b 2416 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2417 }
2418 else if (out)
76f68e9b 2419 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2420 SvSETMAGIC(sv);
2421 }
b310b053
JH
2422 }
2423 }
e27b5b51 2424#endif
b310b053 2425
c7030b81
NC
2426 {
2427 const char *s;
4ffa73a3
JH
2428 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2429 if (strEQ(s, "unsafe"))
2430 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2431 else if (strEQ(s, "safe"))
2432 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2433 else
2434 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2435 }
c7030b81 2436 }
4ffa73a3 2437
81d86705 2438
87606032 2439 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2440 SvREFCNT_dec(linestr_sv);
95670bde 2441
219f7226 2442 PL_subname = newSVpvs("main");
6224f72b 2443
5486870f
DM
2444 if (add_read_e_script)
2445 filter_add(read_e_script, NULL);
2446
6224f72b
GS
2447 /* now parse the script */
2448
93189314 2449 SETERRNO(0,SS_NORMAL);
28ac2b49 2450 if (yyparse(GRAMPROG) || PL_parser->error_count) {
c77da5ff 2451 abort_execution("", PL_origfilename);
6224f72b 2452 }
57843af0 2453 CopLINE_set(PL_curcop, 0);
03d9f026 2454 SET_CURSTASH(PL_defstash);
3280af22
NIS
2455 if (PL_e_script) {
2456 SvREFCNT_dec(PL_e_script);
a0714e2c 2457 PL_e_script = NULL;
6224f72b
GS
2458 }
2459
3280af22 2460 if (PL_do_undump)
6224f72b
GS
2461 my_unexec();
2462
57843af0
GS
2463 if (isWARN_ONCE) {
2464 SAVECOPFILE(PL_curcop);
2465 SAVECOPLINE(PL_curcop);
3280af22 2466 gv_check(PL_defstash);
57843af0 2467 }
6224f72b
GS
2468
2469 LEAVE;
2470 FREETMPS;
2471
2472#ifdef MYMALLOC
f6a607bc
RGS
2473 {
2474 const char *s;
22ff3130
HS
2475 UV uv;
2476 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2477 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2478 dump_mstats("after compilation:");
f6a607bc 2479 }
6224f72b
GS
2480#endif
2481
2482 ENTER;
febb3a6d 2483 PL_restartjmpenv = NULL;
3280af22 2484 PL_restartop = 0;
312caa8e 2485 return NULL;
6224f72b
GS
2486}
2487
954c1994
GS
2488/*
2489=for apidoc perl_run
2490
2491Tells a Perl interpreter to run. See L<perlembed>.
2492
2493=cut
2494*/
2495
6224f72b 2496int
0cb96387 2497perl_run(pTHXx)
6224f72b 2498{
6224f72b 2499 I32 oldscope;
14dd3ad8 2500 int ret = 0;
db36c5a1 2501 dJMPENV;
6224f72b 2502
7918f24d
NC
2503 PERL_ARGS_ASSERT_PERL_RUN;
2504#ifndef MULTIPLICITY
ed6c66dd 2505 PERL_UNUSED_ARG(my_perl);
7918f24d 2506#endif
9d4ba2ae 2507
3280af22 2508 oldscope = PL_scopestack_ix;
96e176bf
CL
2509#ifdef VMS
2510 VMSISH_HUSHED = 0;
2511#endif
6224f72b 2512
14dd3ad8 2513 JMPENV_PUSH(ret);
6224f72b
GS
2514 switch (ret) {
2515 case 1:
2516 cxstack_ix = -1; /* start context stack again */
312caa8e 2517 goto redo_body;
14dd3ad8 2518 case 0: /* normal completion */
14dd3ad8
GS
2519 redo_body:
2520 run_body(oldscope);
924ba076 2521 /* FALLTHROUGH */
14dd3ad8 2522 case 2: /* my_exit() */
3280af22 2523 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2524 LEAVE;
2525 FREETMPS;
03d9f026 2526 SET_CURSTASH(PL_defstash);
3a1ee7e8 2527 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2528 PL_endav && !PL_minus_c) {
ca7b837b 2529 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2530 call_list(oldscope, PL_endav);
9ebf26ad 2531 }
6224f72b
GS
2532#ifdef MYMALLOC
2533 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2534 dump_mstats("after execution: ");
2535#endif
37038d91 2536 ret = STATUS_EXIT;
14dd3ad8 2537 break;
6224f72b 2538 case 3:
312caa8e
CS
2539 if (PL_restartop) {
2540 POPSTACK_TO(PL_mainstack);
2541 goto redo_body;
6224f72b 2542 }
5637ef5b 2543 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2544 FREETMPS;
14dd3ad8
GS
2545 ret = 1;
2546 break;
6224f72b
GS
2547 }
2548
14dd3ad8
GS
2549 JMPENV_POP;
2550 return ret;
312caa8e
CS
2551}
2552
dd374669 2553STATIC void
14dd3ad8
GS
2554S_run_body(pTHX_ I32 oldscope)
2555{
d3b97530
DM
2556 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2557 PL_sawampersand ? "Enabling" : "Omitting",
2558 (unsigned int)(PL_sawampersand)));
6224f72b 2559
3280af22 2560 if (!PL_restartop) {
cf2782cd 2561#ifdef DEBUGGING
f0e3f042
CS
2562 if (DEBUG_x_TEST || DEBUG_B_TEST)
2563 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2564 if (!DEBUG_q_TEST)
2565 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2566#endif
6224f72b 2567
3280af22 2568 if (PL_minus_c) {
bf49b057 2569 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2570 my_exit(0);
2571 }
3280af22 2572 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2573 PL_DBsingle_iv = 1;
9ebf26ad 2574 if (PL_initav) {
ca7b837b 2575 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2576 call_list(oldscope, PL_initav);
9ebf26ad 2577 }
f1fac472 2578#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2579 if (PL_main_root && PL_main_root->op_slabbed)
2580 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2581#endif
6224f72b
GS
2582 }
2583
2584 /* do it */
2585
ca7b837b 2586 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2587
3280af22 2588 if (PL_restartop) {
febb3a6d 2589 PL_restartjmpenv = NULL;
533c011a 2590 PL_op = PL_restartop;
3280af22 2591 PL_restartop = 0;
cea2e8a9 2592 CALLRUNOPS(aTHX);
6224f72b 2593 }
3280af22
NIS
2594 else if (PL_main_start) {
2595 CvDEPTH(PL_main_cv) = 1;
533c011a 2596 PL_op = PL_main_start;
cea2e8a9 2597 CALLRUNOPS(aTHX);
6224f72b 2598 }
f6b3007c 2599 my_exit(0);
e5964223 2600 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2601}
2602
954c1994 2603/*
ccfc67b7
JH
2604=head1 SV Manipulation Functions
2605
954c1994
GS
2606=for apidoc p||get_sv
2607
64ace3f8 2608Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2609C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2610Perl variable does not exist then it will be created. If C<flags> is zero
2611and the variable does not exist then NULL is returned.
954c1994
GS
2612
2613=cut
2614*/
2615
6224f72b 2616SV*
64ace3f8 2617Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2618{
2619 GV *gv;
7918f24d
NC
2620
2621 PERL_ARGS_ASSERT_GET_SV;
2622
64ace3f8 2623 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2624 if (gv)
2625 return GvSV(gv);
a0714e2c 2626 return NULL;
6224f72b
GS
2627}
2628
954c1994 2629/*
ccfc67b7
JH
2630=head1 Array Manipulation Functions
2631
954c1994
GS
2632=for apidoc p||get_av
2633
f0b90de1
SF
2634Returns the AV of the specified Perl global or package array with the given
2635name (so it won't work on lexical variables). C<flags> are passed
72d33970 2636to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2637Perl variable does not exist then it will be created. If C<flags> is zero
2638and the variable does not exist then NULL is returned.
954c1994 2639
f0b90de1
SF
2640Perl equivalent: C<@{"$name"}>.
2641
954c1994
GS
2642=cut
2643*/
2644
6224f72b 2645AV*
cbfd0a87 2646Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2647{
cbfd0a87 2648 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2649
2650 PERL_ARGS_ASSERT_GET_AV;
2651
cbfd0a87 2652 if (flags)
6224f72b
GS
2653 return GvAVn(gv);
2654 if (gv)
2655 return GvAV(gv);
7d49f689 2656 return NULL;
6224f72b
GS
2657}
2658
954c1994 2659/*
ccfc67b7
JH
2660=head1 Hash Manipulation Functions
2661
954c1994
GS
2662=for apidoc p||get_hv
2663
6673a63c 2664Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2665C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2666Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2667and the variable does not exist then C<NULL> is returned.
954c1994
GS
2668
2669=cut
2670*/
2671
6224f72b 2672HV*
6673a63c 2673Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2674{
6673a63c 2675 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2676
2677 PERL_ARGS_ASSERT_GET_HV;
2678
6673a63c 2679 if (flags)
a0d0e21e
LW
2680 return GvHVn(gv);
2681 if (gv)
2682 return GvHV(gv);
5c284bb0 2683 return NULL;
a0d0e21e
LW
2684}
2685
954c1994 2686/*
ccfc67b7
JH
2687=head1 CV Manipulation Functions
2688
780a5241
NC
2689=for apidoc p||get_cvn_flags
2690
2691Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2692C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2693exist then it will be declared (which has the same effect as saying
2694C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2695then NULL is returned.
2696
954c1994
GS
2697=for apidoc p||get_cv
2698
780a5241 2699Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2700
2701=cut
2702*/
2703
a0d0e21e 2704CV*
780a5241 2705Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2706{
780a5241 2707 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2708
2709 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2710
334dda80
FC
2711 /* XXX this is probably not what they think they're getting.
2712 * It has the same effect as "sub name;", i.e. just a forward
2713 * declaration! */
780a5241 2714 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2715 return newSTUB(gv,0);
780a5241 2716 }
a0d0e21e 2717 if (gv)
8ebc5c01 2718 return GvCVu(gv);
601f1833 2719 return NULL;
a0d0e21e
LW
2720}
2721
2c67934f
NC
2722/* Nothing in core calls this now, but we can't replace it with a macro and
2723 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2724CV*
2725Perl_get_cv(pTHX_ const char *name, I32 flags)
2726{
7918f24d
NC
2727 PERL_ARGS_ASSERT_GET_CV;
2728
780a5241
NC
2729 return get_cvn_flags(name, strlen(name), flags);
2730}
2731
79072805
LW
2732/* Be sure to refetch the stack pointer after calling these routines. */
2733
954c1994 2734/*
ccfc67b7
JH
2735
2736=head1 Callback Functions
2737
954c1994
GS
2738=for apidoc p||call_argv
2739
f0b90de1 2740Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2741with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2742L<perlcall>.
f0b90de1
SF
2743
2744Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2745
2746=cut
2747*/
2748
a0d0e21e 2749I32
5aaab254 2750Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2751
8ac85365
NIS
2752 /* See G_* flags in cop.h */
2753 /* null terminated arg list */
8990e307 2754{
a0d0e21e 2755 dSP;
8990e307 2756
7918f24d
NC
2757 PERL_ARGS_ASSERT_CALL_ARGV;
2758
924508f0 2759 PUSHMARK(SP);
3dc78631
DM
2760 while (*argv) {
2761 mXPUSHs(newSVpv(*argv,0));
2762 argv++;
8990e307 2763 }
3dc78631 2764 PUTBACK;
864dbfa3 2765 return call_pv(sub_name, flags);
8990e307
LW
2766}
2767
954c1994
GS
2768/*
2769=for apidoc p||call_pv
2770
2771Performs a callback to the specified Perl sub. See L<perlcall>.
2772
2773=cut
2774*/
2775
a0d0e21e 2776I32
864dbfa3 2777Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2778 /* name of the subroutine */
2779 /* See G_* flags in cop.h */
a0d0e21e 2780{
7918f24d
NC
2781 PERL_ARGS_ASSERT_CALL_PV;
2782
0da0e728 2783 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2784}
2785
954c1994
GS
2786/*
2787=for apidoc p||call_method
2788
2789Performs a callback to the specified Perl method. The blessed object must
2790be on the stack. See L<perlcall>.
2791
2792=cut
2793*/
2794
a0d0e21e 2795I32
864dbfa3 2796Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2797 /* name of the subroutine */
2798 /* See G_* flags in cop.h */
a0d0e21e 2799{
46ca9bac 2800 STRLEN len;
c106c2be 2801 SV* sv;
7918f24d
NC
2802 PERL_ARGS_ASSERT_CALL_METHOD;
2803
46ca9bac 2804 len = strlen(methname);
c106c2be
RZ
2805 sv = flags & G_METHOD_NAMED
2806 ? sv_2mortal(newSVpvn_share(methname, len,0))
2807 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2808
c106c2be 2809 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2810}
2811
2812/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2813/*
2814=for apidoc p||call_sv
2815
078e2213
TC
2816Performs a callback to the Perl sub specified by the SV.
2817
7c0c544c 2818If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2819SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2820or C<SvPV(sv)> will be used as the name of the sub to call.
2821
2822If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2823C<SvPV(sv)> will be used as the name of the method to call.
2824
2825If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2826the name of the method to call.
2827
2828Some other values are treated specially for internal use and should
2829not be depended on.
2830
2831See L<perlcall>.
954c1994
GS
2832
2833=cut
2834*/
2835
a0d0e21e 2836I32
001d637e 2837Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2838 /* See G_* flags in cop.h */
a0d0e21e 2839{
5b434c73 2840 dVAR;
a0d0e21e 2841 LOGOP myop; /* fake syntax tree node */
b46e009d 2842 METHOP method_op;
aa689395 2843 I32 oldmark;
8ea43dc8 2844 VOL I32 retval = 0;
54310121 2845 bool oldcatch = CATCH_GET;
6224f72b 2846 int ret;
c4420975 2847 OP* const oldop = PL_op;
db36c5a1 2848 dJMPENV;
1e422769 2849
7918f24d
NC
2850 PERL_ARGS_ASSERT_CALL_SV;
2851
a0d0e21e
LW
2852 if (flags & G_DISCARD) {
2853 ENTER;
2854 SAVETMPS;
2855 }
2f8edad0
NC
2856 if (!(flags & G_WANT)) {
2857 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2858 */
2859 flags |= G_SCALAR;
2860 }
a0d0e21e 2861
aa689395 2862 Zero(&myop, 1, LOGOP);
f51d4af5 2863 if (!(flags & G_NOARGS))
aa689395 2864 myop.op_flags |= OPf_STACKED;
4f911530 2865 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2866 SAVEOP();
533c011a 2867 PL_op = (OP*)&myop;
aa689395 2868
8c9009ad 2869 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2870 dSP;
2871 EXTEND(SP, 1);
8c9009ad
DD
2872 PUSHs(sv);
2873 PUTBACK;
5b434c73 2874 }
aa689395 2875 oldmark = TOPMARK;
a0d0e21e 2876
3280af22 2877 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2878 /* Handle first BEGIN of -d. */
3280af22 2879 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2880 /* Try harder, since this may have been a sighandler, thus
2881 * curstash may be meaningless. */
ea726b52 2882 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2883 && !(flags & G_NODEBUG))
5ff48db8 2884 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2885
c106c2be 2886 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2887 Zero(&method_op, 1, METHOP);
2888 method_op.op_next = (OP*)&myop;
2889 PL_op = (OP*)&method_op;
c106c2be 2890 if ( flags & G_METHOD_NAMED ) {
b46e009d 2891 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2892 method_op.op_type = OP_METHOD_NAMED;
2893 method_op.op_u.op_meth_sv = sv;
c106c2be 2894 } else {
b46e009d 2895 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2896 method_op.op_type = OP_METHOD;
c106c2be
RZ
2897 }
2898 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2899 myop.op_type = OP_ENTERSUB;
968b3946
GS
2900 }
2901
312caa8e 2902 if (!(flags & G_EVAL)) {
0cdb2077 2903 CATCH_SET(TRUE);
d6f07c05 2904 CALL_BODY_SUB((OP*)&myop);
312caa8e 2905 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2906 CATCH_SET(oldcatch);
312caa8e
CS
2907 }
2908 else {
8e90e786 2909 I32 old_cxix;
d78bda3d 2910 myop.op_other = (OP*)&myop;
101d6365 2911 (void)POPMARK;
8e90e786 2912 old_cxix = cxstack_ix;
274ed8ae 2913 create_eval_scope(NULL, flags|G_FAKINGEVAL);
c318a6ee 2914 INCMARK;
a0d0e21e 2915
14dd3ad8 2916 JMPENV_PUSH(ret);
edb2152a 2917
6224f72b
GS
2918 switch (ret) {
2919 case 0:
14dd3ad8 2920 redo_body:
d6f07c05 2921 CALL_BODY_SUB((OP*)&myop);
312caa8e 2922 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2923 if (!(flags & G_KEEPERR)) {
ab69dbc2 2924 CLEAR_ERRSV();
8433848b 2925 }
a0d0e21e 2926 break;
6224f72b 2927 case 1:
f86702cc 2928 STATUS_ALL_FAILURE;
924ba076 2929 /* FALLTHROUGH */
6224f72b 2930 case 2:
a0d0e21e 2931 /* my_exit() was called */
03d9f026 2932 SET_CURSTASH(PL_defstash);
a0d0e21e 2933 FREETMPS;
14dd3ad8 2934 JMPENV_POP;
f86702cc 2935 my_exit_jump();
e5964223 2936 NOT_REACHED; /* NOTREACHED */
6224f72b 2937 case 3:
3280af22 2938 if (PL_restartop) {
febb3a6d 2939 PL_restartjmpenv = NULL;
533c011a 2940 PL_op = PL_restartop;
3280af22 2941 PL_restartop = 0;
312caa8e 2942 goto redo_body;
a0d0e21e 2943 }
3280af22 2944 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2945 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2946 retval = 0;
2947 else {
2948 retval = 1;
3280af22 2949 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2950 }
312caa8e 2951 break;
a0d0e21e 2952 }
a0d0e21e 2953
8e90e786
DM
2954 /* if we croaked, depending on how we croaked the eval scope
2955 * may or may not have already been popped */
2956 if (cxstack_ix > old_cxix) {
2957 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2958 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2959 delete_eval_scope();
8e90e786 2960 }
14dd3ad8 2961 JMPENV_POP;
a0d0e21e 2962 }
1e422769 2963
a0d0e21e 2964 if (flags & G_DISCARD) {
3280af22 2965 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2966 retval = 0;
2967 FREETMPS;
2968 LEAVE;
2969 }
533c011a 2970 PL_op = oldop;
a0d0e21e
LW
2971 return retval;
2972}
2973
6e72f9df 2974/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2975
954c1994
GS
2976/*
2977=for apidoc p||eval_sv
2978
72d33970 2979Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2980as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2981
2982=cut
2983*/
2984
a0d0e21e 2985I32
864dbfa3 2986Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2987
8ac85365 2988 /* See G_* flags in cop.h */
a0d0e21e 2989{
97aff369 2990 dVAR;
a0d0e21e 2991 UNOP myop; /* fake syntax tree node */
5b434c73 2992 VOL I32 oldmark;
8ea43dc8 2993 VOL I32 retval = 0;
6224f72b 2994 int ret;
c4420975 2995 OP* const oldop = PL_op;
db36c5a1 2996 dJMPENV;
84902520 2997
7918f24d
NC
2998 PERL_ARGS_ASSERT_EVAL_SV;
2999
4633a7c4
LW
3000 if (flags & G_DISCARD) {
3001 ENTER;
3002 SAVETMPS;
3003 }
3004
462e5cf6 3005 SAVEOP();
533c011a 3006 PL_op = (OP*)&myop;
5ff48db8 3007 Zero(&myop, 1, UNOP);
5b434c73
DD
3008 {
3009 dSP;
3010 oldmark = SP - PL_stack_base;
3011 EXTEND(SP, 1);
3012 PUSHs(sv);
3013 PUTBACK;
3014 }
79072805 3015
4633a7c4
LW
3016 if (!(flags & G_NOARGS))
3017 myop.op_flags = OPf_STACKED;
6e72f9df 3018 myop.op_type = OP_ENTEREVAL;
4f911530 3019 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
3020 if (flags & G_KEEPERR)
3021 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
3022
3023 if (flags & G_RE_REPARSING)
3024 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 3025
dedbcade 3026 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 3027 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
3028 TAINT_PROPER("eval_sv()");
3029
14dd3ad8 3030 JMPENV_PUSH(ret);
6224f72b
GS
3031 switch (ret) {
3032 case 0:
14dd3ad8 3033 redo_body:
2ba65d5f
DM
3034 if (PL_op == (OP*)(&myop)) {
3035 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
3036 if (!PL_op)
3037 goto fail; /* failed in compilation */
3038 }
4aca2f62 3039 CALLRUNOPS(aTHX);
312caa8e 3040 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 3041 if (!(flags & G_KEEPERR)) {
ab69dbc2 3042 CLEAR_ERRSV();
8433848b 3043 }
4633a7c4 3044 break;
6224f72b 3045 case 1:
f86702cc 3046 STATUS_ALL_FAILURE;
924ba076 3047 /* FALLTHROUGH */
6224f72b 3048 case 2:
4633a7c4 3049 /* my_exit() was called */
03d9f026 3050 SET_CURSTASH(PL_defstash);
4633a7c4 3051 FREETMPS;
14dd3ad8 3052 JMPENV_POP;
f86702cc 3053 my_exit_jump();
e5964223 3054 NOT_REACHED; /* NOTREACHED */
6224f72b 3055 case 3:
3280af22 3056 if (PL_restartop) {
febb3a6d 3057 PL_restartjmpenv = NULL;
533c011a 3058 PL_op = PL_restartop;
3280af22 3059 PL_restartop = 0;
312caa8e 3060 goto redo_body;
4633a7c4 3061 }
4aca2f62 3062 fail:
3280af22 3063 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 3064 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
3065 retval = 0;
3066 else {
3067 retval = 1;
3280af22 3068 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 3069 }
312caa8e 3070 break;
4633a7c4
LW
3071 }
3072
14dd3ad8 3073 JMPENV_POP;
4633a7c4 3074 if (flags & G_DISCARD) {
3280af22 3075 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
3076 retval = 0;
3077 FREETMPS;
3078 LEAVE;
3079 }
533c011a 3080 PL_op = oldop;
4633a7c4
LW
3081 return retval;
3082}
3083
954c1994
GS
3084/*
3085=for apidoc p||eval_pv
3086
422791e4 3087Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
3088
3089=cut
3090*/
3091
137443ea 3092SV*
864dbfa3 3093Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3094{
137443ea
PP
3095 SV* sv = newSVpv(p, 0);
3096
7918f24d
NC
3097 PERL_ARGS_ASSERT_EVAL_PV;
3098
864dbfa3 3099 eval_sv(sv, G_SCALAR);
137443ea
PP
3100 SvREFCNT_dec(sv);
3101
ed1786ad
DD
3102 {
3103 dSP;
3104 sv = POPs;
3105 PUTBACK;
3106 }
137443ea 3107
eed484f9
DD
3108 /* just check empty string or undef? */
3109 if (croak_on_error) {
3110 SV * const errsv = ERRSV;
3111 if(SvTRUE_NN(errsv))
3112 /* replace with croak_sv? */
3113 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3114 }
137443ea
PP
3115
3116 return sv;
3117}
3118
4633a7c4
LW
3119/* Require a module. */
3120
954c1994 3121/*
ccfc67b7
JH
3122=head1 Embedding Functions
3123
954c1994
GS
3124=for apidoc p||require_pv
3125
7d3fb230
BS
3126Tells Perl to C<require> the file named by the string argument. It is
3127analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3128implemented that way; consider using load_module instead.
954c1994 3129
7d3fb230 3130=cut */
954c1994 3131
4633a7c4 3132void
864dbfa3 3133Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3134{
d3acc0f7 3135 dSP;
97aff369 3136 SV* sv;
7918f24d
NC
3137
3138 PERL_ARGS_ASSERT_REQUIRE_PV;
3139
e788e7d3 3140 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3141 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3142 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3143 POPSTACK;
79072805
LW
3144}
3145
76e3520e 3146STATIC void
b6f82619 3147S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3148{
ab821d7f 3149 /* This message really ought to be max 23 lines.
75c72d73 3150 * Removed -h because the user already knows that option. Others? */
fb73857a 3151
1566c39d
NC
3152 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3153 minimum of 509 character string literals. */
27da23d5 3154 static const char * const usage_msg[] = {
1566c39d
NC
3155" -0[octal] specify record separator (\\0, if no argument)\n"
3156" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3157" -C[number/list] enables the listed Unicode features\n"
3158" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3159" -d[:debugger] run program under debugger\n"
3160" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3161" -e program one line of program (several -e's allowed, omit programfile)\n"
3162" -E program like -e, but enables all optional features\n"
3163" -f don't do $sitelib/sitecustomize.pl at startup\n"
3164" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3165" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3166" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3167" -l[octal] enable line ending processing, specifies line terminator\n"
3168" -[mM][-]module execute \"use/no module...\" before executing program\n"
3169" -n assume \"while (<>) { ... }\" loop around program\n"
3170" -p assume loop like -n but print line also, like sed\n"
3171" -s enable rudimentary parsing for switches after programfile\n"
3172" -S look for programfile using PATH environment variable\n",
3173" -t enable tainting warnings\n"
3174" -T enable tainting checks\n"
3175" -u dump core after parsing program\n"
3176" -U allow unsafe operations\n"
3177" -v print version, patchlevel and license\n"
3178" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3179" -w enable many useful warnings\n"
1566c39d
NC
3180" -W enable all warnings\n"
3181" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3182" -X disable all warnings\n"
3183" \n"
3184"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3185NULL
3186};
27da23d5 3187 const char * const *p = usage_msg;
1566c39d 3188 PerlIO *out = PerlIO_stdout();
fb73857a 3189
1566c39d
NC
3190 PerlIO_printf(out,
3191 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3192 PL_origargv[0]);
fb73857a 3193 while (*p)
1566c39d 3194 PerlIO_puts(out, *p++);
b6f82619 3195 my_exit(0);
4633a7c4
LW
3196}
3197
b4ab917c
DM
3198/* convert a string of -D options (or digits) into an int.
3199 * sets *s to point to the char after the options */
3200
3201#ifdef DEBUGGING
3202int
e1ec3a88 3203Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3204{
27da23d5 3205 static const char * const usage_msgd[] = {
651b8f1a
NC
3206 " Debugging flag values: (see also -d)\n"
3207 " p Tokenizing and parsing (with v, displays parse stack)\n"
3208 " s Stack snapshots (with v, displays all stacks)\n"
3209 " l Context (loop) stack processing\n"
3210 " t Trace execution\n"
3211 " o Method and overloading resolution\n",
3212 " c String/numeric conversions\n"
3213 " P Print profiling info, source file input state\n"
3214 " m Memory and SV allocation\n"
3215 " f Format processing\n"
3216 " r Regular expression parsing and execution\n"
3217 " x Syntax tree dump\n",
3218 " u Tainting checks\n"
3219 " H Hash dump -- usurps values()\n"
3220 " X Scratchpad allocation\n"
3221 " D Cleaning up\n"
56967202 3222 " S Op slab allocation\n"
651b8f1a
NC
3223 " T Tokenising\n"
3224 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3225 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3226 " v Verbose: use in conjunction with other flags\n"
3227 " C Copy On Write\n"
3228 " A Consistency checks on internal structures\n"
3229 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3230 " M trace smart match resolution\n"
3231 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3232 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3233 " i trace PerlIO layer processing\n",
e6e64d9b
JC
3234 NULL
3235 };
22ff3130 3236 UV uv = 0;
7918f24d
NC
3237
3238 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3239
b4ab917c
DM
3240 if (isALPHA(**s)) {
3241 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3242 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3243
0eb30aeb 3244 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3245 const char * const d = strchr(debopts,**s);
b4ab917c 3246 if (d)
22ff3130 3247 uv |= 1 << (d - debopts);
b4ab917c 3248 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3249 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3250 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3251 }
3252 }
e6e64d9b 3253 else if (isDIGIT(**s)) {
96e440d2 3254 const char* e;
22ff3130 3255 if (grok_atoUV(*s, &uv, &e))
96e440d2 3256 *s = e;
0eb30aeb 3257 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3258 }
ddcf8bc1 3259 else if (givehelp) {
06e869a4 3260 const char *const *p = usage_msgd;
651b8f1a 3261 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3262 }
22ff3130 3263 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3264}
3265#endif
3266
79072805
LW
3267/* This routine handles any switches that can be given during run */
3268
c7030b81
NC
3269const char *
3270Perl_moreswitches(pTHX_ const char *s)
79072805 3271{
27da23d5 3272 dVAR;
84c133a0 3273 UV rschar;
0544e6df 3274 const char option = *s; /* used to remember option in -m/-M code */
79072805 3275
7918f24d
NC
3276 PERL_ARGS_ASSERT_MORESWITCHES;
3277
79072805
LW
3278 switch (*s) {
3279 case '0':
a863c7d1 3280 {
f2095865 3281 I32 flags = 0;
a3b680e6 3282 STRLEN numlen;
f2095865
JH
3283
3284 SvREFCNT_dec(PL_rs);
3285 if (s[1] == 'x' && s[2]) {
a3b680e6 3286 const char *e = s+=2;
f2095865
JH
3287 U8 *tmps;
3288
a3b680e6
AL
3289 while (*e)
3290 e++;
f2095865
JH
3291 numlen = e - s;
3292 flags = PERL_SCAN_SILENT_ILLDIGIT;
3293 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3294 if (s + numlen < e) {
3295 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3296 numlen = 0;
3297 s--;
3298 }
396482e1 3299 PL_rs = newSVpvs("");
10656159 3300 tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865 3301 uvchr_to_utf8(tmps, rschar);
5f560d8a 3302 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3303 SvUTF8_on(PL_rs);
3304 }
3305 else {
3306 numlen = 4;
3307 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3308 if (rschar & ~((U8)~0))
3309 PL_rs = &PL_sv_undef;
3310 else if (!rschar && numlen >= 2)
396482e1 3311 PL_rs = newSVpvs("");
f2095865
JH
3312 else {
3313 char ch = (char)rschar;
3314 PL_rs = newSVpvn(&ch, 1);
3315 }
3316 }
64ace3f8 3317 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3318 return s + numlen;
a863c7d1 3319 }
46487f74 3320 case 'C':
a05d7ebb 3321 s++;
dd374669 3322 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3323 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3324 PL_utf8cache = -1;
46487f74 3325 return s;
2304df62 3326 case 'F':
5fc691f1 3327 PL_minus_a = TRUE;
3280af22 3328 PL_minus_F = TRUE;
24ffa309 3329 PL_minus_n = TRUE;
ebce5377
RGS
3330 PL_splitstr = ++s;
3331 while (*s && !isSPACE(*s)) ++s;
e49e380e 3332 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3333 return s;
79072805 3334 case 'a':
3280af22 3335 PL_minus_a = TRUE;
24ffa309 3336 PL_minus_n = TRUE;
79072805
LW
3337 s++;
3338 return s;
3339 case 'c':
3280af22 3340 PL_minus_c = TRUE;
79072805
LW
3341 s++;
3342 return s;
3343 case 'd':
f20b2998 3344 forbid_setid('d', FALSE);
4633a7c4 3345 s++;
2cbb2ee1
RGS
3346
3347 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3348 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3349 ++s;
3350 my_setenv("PERL5DB_THREADED", "1");
3351 }
3352
70c94a19
RR
3353 /* The following permits -d:Mod to accepts arguments following an =
3354 in the fashion that -MSome::Mod does. */
3355 if (*s == ':' || *s == '=') {
b19934fb
NC
3356 const char *start;
3357 const char *end;
3358 SV *sv;
3359
3360 if (*++s == '-') {
3361 ++s;
3362 sv = newSVpvs("no Devel::");
3363 } else {
3364 sv = newSVpvs("use Devel::");
3365 }
3366
3367 start = s;
3368 end = s + strlen(s);
f85893a1 3369
b19934fb 3370 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3371 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3372 if (*s != '=')
f85893a1 3373 sv_catpvn(sv, start, end - start);
70c94a19
RR
3374 else {
3375 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3376 /* Don't use NUL as q// delimiter here, this string goes in the
3377 * environment. */
3378 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3379 }
f85893a1 3380 s = end;
184f32ec 3381 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3382 SvREFCNT_dec(sv);
4633a7c4 3383 }
ed094faf 3384 if (!PL_perldb) {
3280af22 3385 PL_perldb = PERLDB_ALL;
a0d0e21e 3386 init_debugger();
ed094faf 3387 }
79072805
LW
3388 return s;
3389 case 'D':
0453d815 3390 {
79072805 3391#ifdef DEBUGGING
f20b2998 3392 forbid_setid('D', FALSE);
b4ab917c 3393 s++;
dd374669 3394 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3395#else /* !DEBUGGING */
0453d815 3396 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3397 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3398 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3399 for (s++; isWORDCHAR(*s); s++) ;
79072805 3400#endif
79072805 3401 return s;
2b5060ae 3402 NOT_REACHED; /* NOTREACHED */
0453d815 3403 }
4633a7c4 3404 case 'h':
b6f82619 3405 usage();
2b5060ae
DM
3406 NOT_REACHED; /* NOTREACHED */
3407
79072805 3408 case 'i':
43c5f42d 3409 Safefree(PL_inplace);
5ef5d758 3410 {
d4c19fe8 3411 const char * const start = ++s;
5ef5d758
NC
3412 while (*s && !isSPACE(*s))
3413 ++s;
3414
3415 PL_inplace = savepvn(start, s - start);
3416 }
fb73857a 3417 return s;
4e49a025 3418 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3419 forbid_setid('I', FALSE);
fb73857a
PP
3420 ++s;
3421 while (*s && isSPACE(*s))
3422 ++s;
3423 if (*s) {
c7030b81 3424 const char *e, *p;
0df16ed7
GS
3425 p = s;
3426 /* ignore trailing spaces (possibly followed by other switches) */
3427 do {
3428 for (e = p; *e && !isSPACE(*e); e++) ;
3429 p = e;
3430 while (isSPACE(*p))
3431 p++;
3432 } while (*p && *p != '-');
55b4bc1c 3433 incpush(s, e-s,
e28f3139 3434 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3435 s = p;
3436 if (*s == '-')
3437 s++;
79072805
LW
3438 }
3439 else
a67e862a 3440 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3441 return s;
79072805 3442 case 'l':
3280af22 3443 PL_minus_l = TRUE;
79072805 3444 s++;
7889fe52
NIS
3445 if (PL_ors_sv) {
3446 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3447 PL_ors_sv = NULL;
7889fe52 3448 }
79072805 3449 if (isDIGIT(*s)) {
53305cf1 3450 I32 flags = 0;
a3b680e6 3451 STRLEN numlen;
396482e1 3452 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3453 numlen = 3 + (*s == '0');
3454 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3455 s += numlen;
3456 }
3457 else {
8bfdd7d9 3458 if (RsPARA(PL_rs)) {
396482e1 3459 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3460 }
3461 else {
8bfdd7d9 3462 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3463 }
79072805
LW
3464 }
3465 return s;
1a30305b 3466 case 'M':
f20b2998 3467 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3468 /* FALLTHROUGH */
1a30305b 3469 case 'm':
f20b2998 3470 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3471 if (*++s) {
c7030b81 3472 const char *start;
b64cb68c 3473 const char *end;
11343788 3474 SV *sv;
e1ec3a88 3475 const char *use = "use ";
0544e6df 3476 bool colon = FALSE;
a5f75d66 3477 /* -M-foo == 'no foo' */
d0043bd1
NC
3478 /* Leading space on " no " is deliberate, to make both
3479 possibilities the same length. */
3480 if (*s == '-') { use = " no "; ++s; }
3481 sv = newSVpvn(use,4);
a5f75d66 3482 start = s;
1a30305b 3483 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3484 while(isWORDCHAR(*s) || *s==':') {