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opcode.pl: simplify cpp conditionals
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CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
f3e2e262 6 * 2013, 2014, 2015, 2016, 2017 by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
a1b69980
DM
25 *
26 * Note that at build time this file is also linked to as perlmini.c,
27 * and perlmini.o is then built with PERL_IS_MINIPERL defined, which is
28 * then used to create the miniperl executable, rather than perl.o.
166f8a29
DM
29 */
30
c44493f1 31#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
32# define USE_SITECUSTOMIZE
33#endif
34
378cc40b 35#include "EXTERN.h"
864dbfa3 36#define PERL_IN_PERL_C
378cc40b 37#include "perl.h"
e3321bb0 38#include "patchlevel.h" /* for local_patches */
4a5df386 39#include "XSUB.h"
378cc40b 40
011f1a1a
JH
41#ifdef NETWARE
42#include "nwutil.h"
011f1a1a
JH
43#endif
44
2aa47728 45#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
46# ifdef I_SYSUIO
47# include <sys/uio.h>
48# endif
49
50union control_un {
51 struct cmsghdr cm;
52 char control[CMSG_SPACE(sizeof(int))];
53};
54
2aa47728
NC
55#endif
56
5311654c
JH
57#ifndef HZ
58# ifdef CLK_TCK
59# define HZ CLK_TCK
60# else
61# define HZ 60
62# endif
63#endif
64
7114a2d2 65#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 66char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
67#endif
68
acfe0abc 69static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 70
cc69b689 71#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 72# define validate_suid(rsfp) NOOP
cc69b689 73#else
b24bc095 74# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 75#endif
8d063cd8 76
d6f07c05
AL
77#define CALL_BODY_SUB(myop) \
78 if (PL_op == (myop)) \
139d0ce6 79 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
80 if (PL_op) \
81 CALLRUNOPS(aTHX);
82
83#define CALL_LIST_BODY(cv) \
84 PUSHMARK(PL_stack_sp); \
9a8aa25b 85 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 86
e6827a76 87static void
daa7d858 88S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 89{
27da23d5 90 dVAR;
e6827a76
NC
91 if (!PL_curinterp) {
92 PERL_SET_INTERP(my_perl);
3db8f154 93#if defined(USE_ITHREADS)
e6827a76
NC
94 INIT_THREADS;
95 ALLOC_THREAD_KEY;
96 PERL_SET_THX(my_perl);
97 OP_REFCNT_INIT;
e8570548 98 OP_CHECK_MUTEX_INIT;
71ad1b0c 99 HINTS_REFCNT_INIT;
929e1213 100 LOCALE_INIT;
e6827a76 101 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
102 MUTEX_INIT(&PL_my_ctx_mutex);
103# endif
e6827a76 104 }
c0bce9aa
NC
105#if defined(USE_ITHREADS)
106 else
107#else
108 /* This always happens for non-ithreads */
109#endif
110 {
e6827a76
NC
111 PERL_SET_THX(my_perl);
112 }
113}
06d86050 114
cbec8ebe
DM
115
116/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
117
118void
119Perl_sys_init(int* argc, char*** argv)
120{
4fc0badb 121 dVAR;
7918f24d
NC
122
123 PERL_ARGS_ASSERT_SYS_INIT;
124
cbec8ebe
DM
125 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
126 PERL_UNUSED_ARG(argv);
127 PERL_SYS_INIT_BODY(argc, argv);
128}
129
130void
131Perl_sys_init3(int* argc, char*** argv, char*** env)
132{
4fc0badb 133 dVAR;
7918f24d
NC
134
135 PERL_ARGS_ASSERT_SYS_INIT3;
136
cbec8ebe
DM
137 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
138 PERL_UNUSED_ARG(argv);
139 PERL_UNUSED_ARG(env);
140 PERL_SYS_INIT3_BODY(argc, argv, env);
141}
142
143void
88772978 144Perl_sys_term(void)
cbec8ebe 145{
4fc0badb 146 dVAR;
bf81751b
DM
147 if (!PL_veto_cleanup) {
148 PERL_SYS_TERM_BODY();
149 }
cbec8ebe
DM
150}
151
152
32e30700
GS
153#ifdef PERL_IMPLICIT_SYS
154PerlInterpreter *
7766f137
GS
155perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
156 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
157 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
158 struct IPerlDir* ipD, struct IPerlSock* ipS,
159 struct IPerlProc* ipP)
160{
161 PerlInterpreter *my_perl;
7918f24d
NC
162
163 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
164
9f653bb5 165 /* Newx() needs interpreter, so call malloc() instead */
32e30700 166 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 167 S_init_tls_and_interp(my_perl);
32e30700
GS
168 Zero(my_perl, 1, PerlInterpreter);
169 PL_Mem = ipM;
7766f137
GS
170 PL_MemShared = ipMS;
171 PL_MemParse = ipMP;
32e30700
GS
172 PL_Env = ipE;
173 PL_StdIO = ipStd;
174 PL_LIO = ipLIO;
175 PL_Dir = ipD;
176 PL_Sock = ipS;
177 PL_Proc = ipP;
7cb608b5 178 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 179
32e30700
GS
180 return my_perl;
181}
182#else
954c1994
GS
183
184/*
ccfc67b7
JH
185=head1 Embedding Functions
186
954c1994
GS
187=for apidoc perl_alloc
188
189Allocates a new Perl interpreter. See L<perlembed>.
190
191=cut
192*/
193
93a17b20 194PerlInterpreter *
cea2e8a9 195perl_alloc(void)
79072805 196{
cea2e8a9 197 PerlInterpreter *my_perl;
79072805 198
9f653bb5 199 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 200 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 201
e6827a76 202 S_init_tls_and_interp(my_perl);
7cb608b5 203#ifndef PERL_TRACK_MEMPOOL
07409e01 204 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
205#else
206 Zero(my_perl, 1, PerlInterpreter);
207 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
208 return my_perl;
209#endif
79072805 210}
32e30700 211#endif /* PERL_IMPLICIT_SYS */
79072805 212
954c1994
GS
213/*
214=for apidoc perl_construct
215
216Initializes a new Perl interpreter. See L<perlembed>.
217
218=cut
219*/
220
0927ade0 221static void
222S_fixup_platform_bugs(void)
223{
224#if defined(__GLIBC__) && IVSIZE == 8 \
225 && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
226 {
227 IV l = 3;
228 IV r = -10;
229 /* Cannot do this check with inlined IV constants since
230 * that seems to work correctly even with the buggy glibc. */
231 if (l % r == -3) {
232 dTHX;
233 /* Yikes, we have the bug.
234 * Patch in the workaround version. */
235 PL_ppaddr[OP_I_MODULO] = &Perl_pp_i_modulo_glibc_bugfix;
236 }
237 }
238#endif
239}
240
79072805 241void
0cb96387 242perl_construct(pTHXx)
79072805 243{
27da23d5 244 dVAR;
7918f24d
NC
245
246 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
247
8990e307 248#ifdef MULTIPLICITY
54aff467 249 init_interp();
ac27b0f5 250 PL_perl_destruct_level = 1;
54aff467 251#else
7918f24d 252 PERL_UNUSED_ARG(my_perl);
54aff467
GS
253 if (PL_perl_destruct_level > 0)
254 init_interp();
255#endif
34caed6d
DM
256 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
257
75d476e2
SM
258#ifdef PERL_TRACE_OPS
259 Zero(PL_op_exec_cnt, OP_max+2, UV);
260#endif
261
0d96b528 262 init_constants();
34caed6d 263
e04fc1aa
CB
264 SvREADONLY_on(&PL_sv_placeholder);
265 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
266
267 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
268#ifdef PERL_USES_PL_PIDSTATUS
269 PL_pidstatus = newHV();
270#endif
271
272 PL_rs = newSVpvs("\n");
273
274 init_stacks();
275
276/* The PERL_INTERNAL_RAND_SEED set-up must be after init_stacks because it calls
277 * things that may put SVs on the stack.
278 */
279
d6295071 280#ifdef NO_PERL_INTERNAL_RAND_SEED
f26b33bd 281 Perl_drand48_init_r(&PL_internal_random_state, seed());
d6295071
TC
282#else
283 {
284 UV seed;
285 const char *env_pv;
286 if (PerlProc_getuid() != PerlProc_geteuid() ||
287 PerlProc_getgid() != PerlProc_getegid() ||
288 !(env_pv = PerlEnv_getenv("PERL_INTERNAL_RAND_SEED")) ||
289 grok_number(env_pv, strlen(env_pv), &seed) != IS_NUMBER_IN_UV) {
290 seed = seed();
291 }
292 Perl_drand48_init_r(&PL_internal_random_state, (U32)seed);
293 }
294#endif
f26b33bd 295
748a9306 296 init_ids();
a5f75d66 297
0927ade0 298 S_fixup_platform_bugs();
299
312caa8e 300 JMPENV_BOOTSTRAP;
f86702cc
PP
301 STATUS_ALL_SUCCESS;
302
0672f40e 303 init_i18nl10n(1);
0b5b802d 304
ab821d7f 305#if defined(LOCAL_PATCH_COUNT)
3280af22 306 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
307#endif
308
fa2e4594
TC
309#if defined(LIBM_LIB_VERSION)
310 /*
311 * Some BSDs and Cygwin default to POSIX math instead of IEEE.
312 * This switches them over to IEEE.
313 */
314 _LIB_VERSION = _IEEE_;
315#endif
316
52853b95
GS
317#ifdef HAVE_INTERP_INTERN
318 sys_intern_init();
319#endif
320
3a1ee7e8 321 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 322
3280af22
NIS
323 PL_fdpid = newAV(); /* for remembering popen pids by fd */
324 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 325 PL_errors = newSVpvs("");
854da30f
YO
326 SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
327 SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
328 SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
1fcf4c12 329#ifdef USE_ITHREADS
402d2eb1
NC
330 /* First entry is a list of empty elements. It needs to be initialised
331 else all hell breaks loose in S_find_uninit_var(). */
332 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 333 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 334 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 335#endif
e5dd39fc 336#ifdef USE_REENTRANT_API
59bd0823 337 Perl_reentrant_init(aTHX);
e5dd39fc 338#endif
e6a172f3 339 if (PL_hash_seed_set == FALSE) {
9d5e3f1a
YO
340 /* Initialize the hash seed and state at startup. This must be
341 * done very early, before ANY hashes are constructed, and once
342 * setup is fixed for the lifetime of the process.
343 *
344 * If you decide to disable the seeding process you should choose
345 * a suitable seed yourself and define PERL_HASH_SEED to a well chosen
346 * string. See hv_func.h for details.
347 */
1a237f4f 348#if defined(USE_HASH_SEED)
9d5e3f1a 349 /* get the hash seed from the environment or from an RNG */
7dc86639 350 Perl_get_hash_seed(aTHX_ PL_hash_seed);
1a237f4f 351#else
9d5e3f1a
YO
352 /* they want a hard coded seed, check that it is long enough */
353 assert( strlen(PERL_HASH_SEED) >= PERL_HASH_SEED_BYTES );
1a237f4f 354#endif
e6a172f3 355
9d5e3f1a
YO
356 /* now we use the chosen seed to initialize the state -
357 * in some configurations this may be a relatively speaking
358 * expensive operation, but we only have to do it once at startup */
359 PERL_HASH_SEED_STATE(PERL_HASH_SEED,PL_hash_state);
360
361#ifdef PERL_USE_SINGLE_CHAR_HASH_CACHE
362 /* we can build a special cache for 0/1 byte keys, if people choose
363 * I suspect most of the time it is not worth it */
364 {
365 char str[2]="\0";
366 int i;
367 for (i=0;i<256;i++) {
368 str[0]= i;
369 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[i],str,1);
370 }
371 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[256],str,0);
372 }
373#endif
374 /* at this point we have initialezed the hash function, and we can start
375 * constructing hashes */
376 PL_hash_seed_set= TRUE;
377 }
3d47000e
AB
378 /* Note that strtab is a rather special HV. Assumptions are made
379 about not iterating on it, and not adding tie magic to it.
380 It is properly deallocated in perl_destruct() */
381 PL_strtab = newHV();
382
9d5e3f1a
YO
383 /* SHAREKEYS tells us that the hash has its keys shared with PL_strtab,
384 * which is not the case with PL_strtab itself */
3d47000e 385 HvSHAREKEYS_off(PL_strtab); /* mandatory */
9d5e3f1a 386 hv_ksplit(PL_strtab, 1 << 11);
3d47000e 387
a38ab475
RZ
388 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
389
2f42fcb0
JH
390#ifndef PERL_MICRO
391# ifdef USE_ENVIRON_ARRAY
0631ea03 392 PL_origenviron = environ;
2f42fcb0 393# endif
0631ea03
AB
394#endif
395
5311654c 396 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 397 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
398 * The HZ if not originally defined has been by now
399 * been defined as CLK_TCK, if available. */
b6c36746 400#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
401 PL_clocktick = sysconf(_SC_CLK_TCK);
402 if (PL_clocktick <= 0)
403#endif
404 PL_clocktick = HZ;
405
081fc587
AB
406 PL_stashcache = newHV();
407
e8e3635e 408 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 409
27da23d5
JH
410#ifdef HAS_MMAP
411 if (!PL_mmap_page_size) {
412#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
413 {
414 SETERRNO(0, SS_NORMAL);
415# ifdef _SC_PAGESIZE
416 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
417# else
418 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
419# endif
420 if ((long) PL_mmap_page_size < 0) {
421 if (errno) {
44f8325f 422 SV * const error = ERRSV;
d4c19fe8 423 SvUPGRADE(error, SVt_PV);
0510663f 424 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
425 }
426 else
427 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
428 }
429 }
430#else
431# ifdef HAS_GETPAGESIZE
432 PL_mmap_page_size = getpagesize();
433# else
434# if defined(I_SYS_PARAM) && defined(PAGESIZE)
435 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
436# endif
437# endif
438#endif
439 if (PL_mmap_page_size <= 0)
440 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
441 (IV) PL_mmap_page_size);
442 }
443#endif /* HAS_MMAP */
444
445#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
446 PL_timesbase.tms_utime = 0;
447 PL_timesbase.tms_stime = 0;
448 PL_timesbase.tms_cutime = 0;
449 PL_timesbase.tms_cstime = 0;
450#endif
451
7d113631
NC
452 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
453
a3e6e81e 454 PL_registered_mros = newHV();
9e169432
NC
455 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
456 HvMAX(PL_registered_mros) = 0;
a3e6e81e 457
7b8dd5f4
KW
458 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
459 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
460 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
461 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
462 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
463 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
464 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
465 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
466 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
467 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
468 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
469 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
470 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
471 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
472 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
473 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 474 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
475 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
476 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 477 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
9e7ded3f 478 PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist);
5acc3fa5 479#ifdef HAS_POSIX_2008_LOCALE
6ebbc862
KW
480 PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
481#endif
7b8dd5f4 482
8990e307 483 ENTER;
79072805
LW
484}
485
954c1994 486/*
62375a60
NIS
487=for apidoc nothreadhook
488
489Stub that provides thread hook for perl_destruct when there are
490no threads.
491
492=cut
493*/
494
495int
4e9e3734 496Perl_nothreadhook(pTHX)
62375a60 497{
96a5add6 498 PERL_UNUSED_CONTEXT;
62375a60
NIS
499 return 0;
500}
501
41e4abd8
NC
502#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
503void
504Perl_dump_sv_child(pTHX_ SV *sv)
505{
506 ssize_t got;
bf357333
NC
507 const int sock = PL_dumper_fd;
508 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
509 union control_un control;
510 struct msghdr msg;
808ad2d0 511 struct iovec vec[2];
bf357333 512 struct cmsghdr *cmptr;
808ad2d0
NC
513 int returned_errno;
514 unsigned char buffer[256];
41e4abd8 515
7918f24d
NC
516 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
517
bf357333 518 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
519 return;
520
521 PerlIO_flush(Perl_debug_log);
522
bf357333
NC
523 /* All these shenanigans are to pass a file descriptor over to our child for
524 it to dump out to. We can't let it hold open the file descriptor when it
525 forks, as the file descriptor it will dump to can turn out to be one end
526 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 527 be open, the wait would be forever.) */
bf357333
NC
528
529 msg.msg_control = control.control;
530 msg.msg_controllen = sizeof(control.control);
531 /* We're a connected socket so we don't need a destination */
532 msg.msg_name = NULL;
533 msg.msg_namelen = 0;
534 msg.msg_iov = vec;
808ad2d0 535 msg.msg_iovlen = 1;
bf357333
NC
536
537 cmptr = CMSG_FIRSTHDR(&msg);
538 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
539 cmptr->cmsg_level = SOL_SOCKET;
540 cmptr->cmsg_type = SCM_RIGHTS;
541 *((int *)CMSG_DATA(cmptr)) = 1;
542
543 vec[0].iov_base = (void*)&sv;
544 vec[0].iov_len = sizeof(sv);
545 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
546
547 if(got < 0) {
bf357333 548 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
549 abort();
550 }
bf357333
NC
551 if(got < sizeof(sv)) {
552 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
553 abort();
554 }
555
808ad2d0
NC
556 /* Return protocol is
557 int: errno value
558 unsigned char: length of location string (0 for empty)
559 unsigned char*: string (not terminated)
560 */
561 vec[0].iov_base = (void*)&returned_errno;
562 vec[0].iov_len = sizeof(returned_errno);
563 vec[1].iov_base = buffer;
564 vec[1].iov_len = 1;
565
566 got = readv(sock, vec, 2);
41e4abd8
NC
567
568 if(got < 0) {
569 perror("Debug leaking scalars parent read failed");
808ad2d0 570 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
571 abort();
572 }
808ad2d0 573 if(got < sizeof(returned_errno) + 1) {
41e4abd8 574 perror("Debug leaking scalars parent short read");
808ad2d0 575 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
576 abort();
577 }
578
808ad2d0
NC
579 if (*buffer) {
580 got = read(sock, buffer + 1, *buffer);
581 if(got < 0) {
582 perror("Debug leaking scalars parent read 2 failed");
583 PerlIO_flush(PerlIO_stderr());
584 abort();
585 }
586
587 if(got < *buffer) {
588 perror("Debug leaking scalars parent short read 2");
589 PerlIO_flush(PerlIO_stderr());
590 abort();
591 }
592 }
593
594 if (returned_errno || *buffer) {
595 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
596 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 597 returned_errno, Strerror(returned_errno));
41e4abd8
NC
598 }
599}
600#endif
601
62375a60 602/*
954c1994
GS
603=for apidoc perl_destruct
604
605Shuts down a Perl interpreter. See L<perlembed>.
606
607=cut
608*/
609
31d77e54 610int
0cb96387 611perl_destruct(pTHXx)
79072805 612{
27da23d5 613 dVAR;
8162b70e 614 volatile signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 615 HV *hv;
2aa47728 616#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
617 pid_t child;
618#endif
9c0b6888 619 int i;
8990e307 620
7918f24d
NC
621 PERL_ARGS_ASSERT_PERL_DESTRUCT;
622#ifndef MULTIPLICITY
ed6c66dd 623 PERL_UNUSED_ARG(my_perl);
7918f24d 624#endif
9d4ba2ae 625
3d22c4f0
GG
626 assert(PL_scopestack_ix == 1);
627
7766f137
GS
628 /* wait for all pseudo-forked children to finish */
629 PERL_WAIT_FOR_CHILDREN;
630
3280af22 631 destruct_level = PL_perl_destruct_level;
36e77d41 632#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 633 {
9d4ba2ae
AL
634 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
635 if (s) {
96e440d2
JH
636 int i;
637 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
638 i = -1;
639 } else {
22ff3130
HS
640 UV uv;
641 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
642 i = (int)uv;
643 else
644 i = 0;
96e440d2 645 }
36e77d41
DD
646#ifdef DEBUGGING
647 if (destruct_level < i) destruct_level = i;
648#endif
649#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
650 /* RT #114496, for perl_free */
651 PL_perl_destruct_level = i;
36e77d41 652#endif
5f05dabc 653 }
4633a7c4
LW
654 }
655#endif
656
27da23d5 657 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
658 dJMPENV;
659 int x = 0;
660
661 JMPENV_PUSH(x);
1b6737cc 662 PERL_UNUSED_VAR(x);
9ebf26ad 663 if (PL_endav && !PL_minus_c) {
ca7b837b 664 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 665 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 666 }
f3faeb53 667 JMPENV_POP;
26f423df 668 }
f3faeb53 669 LEAVE;
a0d0e21e 670 FREETMPS;
3d22c4f0 671 assert(PL_scopestack_ix == 0);
a0d0e21e 672
e00b64d4 673 /* Need to flush since END blocks can produce output */
8abddda3
TC
674 /* flush stdout separately, since we can identify it */
675#ifdef USE_PERLIO
676 {
677 PerlIO *stdo = PerlIO_stdout();
678 if (*stdo && PerlIO_flush(stdo)) {
679 PerlIO_restore_errno(stdo);
675c73ca
MB
680 if (errno)
681 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
682 Strerror(errno));
8abddda3
TC
683 if (!STATUS_UNIX)
684 STATUS_ALL_FAILURE;
685 }
686 }
687#endif
f13a2bc0 688 my_fflush_all();
e00b64d4 689
75d476e2 690#ifdef PERL_TRACE_OPS
e71f25b3
JC
691 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
692 {
693 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
694 UV uv;
695
696 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
697 || !(uv > 0))
698 goto no_trace_out;
699 }
75d476e2
SM
700 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
701 for (i = 0; i <= OP_max; ++i) {
e71f25b3 702 if (PL_op_exec_cnt[i])
147e3846 703 PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM
704 }
705 /* Utility slot for easily doing little tracing experiments in the runloop: */
706 if (PL_op_exec_cnt[OP_max+1] != 0)
147e3846 707 PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]);
75d476e2 708 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 709 no_trace_out:
75d476e2
SM
710#endif
711
712
16c91539 713 if (PL_threadhook(aTHX)) {
62375a60 714 /* Threads hook has vetoed further cleanup */
c301d606 715 PL_veto_cleanup = TRUE;
37038d91 716 return STATUS_EXIT;
62375a60
NIS
717 }
718
2aa47728
NC
719#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
720 if (destruct_level != 0) {
721 /* Fork here to create a child. Our child's job is to preserve the
722 state of scalars prior to destruction, so that we can instruct it
723 to dump any scalars that we later find have leaked.
724 There's no subtlety in this code - it assumes POSIX, and it doesn't
725 fail gracefully */
726 int fd[2];
727
728 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
729 perror("Debug leaking scalars socketpair failed");
730 abort();
731 }
732
733 child = fork();
734 if(child == -1) {
735 perror("Debug leaking scalars fork failed");
736 abort();
737 }
738 if (!child) {
739 /* We are the child */
3125a5a4
NC
740 const int sock = fd[1];
741 const int debug_fd = PerlIO_fileno(Perl_debug_log);
742 int f;
808ad2d0
NC
743 const char *where;
744 /* Our success message is an integer 0, and a char 0 */
b61433a9 745 static const char success[sizeof(int) + 1] = {0};
3125a5a4 746
2aa47728 747 close(fd[0]);
2aa47728 748
3125a5a4
NC
749 /* We need to close all other file descriptors otherwise we end up
750 with interesting hangs, where the parent closes its end of a
751 pipe, and sits waiting for (another) child to terminate. Only
752 that child never terminates, because it never gets EOF, because
bf357333
NC
753 we also have the far end of the pipe open. We even need to
754 close the debugging fd, because sometimes it happens to be one
755 end of a pipe, and a process is waiting on the other end for
756 EOF. Normally it would be closed at some point earlier in
757 destruction, but if we happen to cause the pipe to remain open,
758 EOF never occurs, and we get an infinite hang. Hence all the
759 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
760
761 f = sysconf(_SC_OPEN_MAX);
762 if(f < 0) {
808ad2d0
NC
763 where = "sysconf failed";
764 goto abort;
3125a5a4
NC
765 }
766 while (f--) {
767 if (f == sock)
768 continue;
3125a5a4
NC
769 close(f);
770 }
771
2aa47728
NC
772 while (1) {
773 SV *target;
bf357333
NC
774 union control_un control;
775 struct msghdr msg;
776 struct iovec vec[1];
777 struct cmsghdr *cmptr;
778 ssize_t got;
779 int got_fd;
780
781 msg.msg_control = control.control;
782 msg.msg_controllen = sizeof(control.control);
783 /* We're a connected socket so we don't need a source */
784 msg.msg_name = NULL;
785 msg.msg_namelen = 0;
786 msg.msg_iov = vec;
c3caa5c3 787 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
788
789 vec[0].iov_base = (void*)&target;
790 vec[0].iov_len = sizeof(target);
791
792 got = recvmsg(sock, &msg, 0);
2aa47728
NC
793
794 if(got == 0)
795 break;
796 if(got < 0) {
808ad2d0
NC
797 where = "recv failed";
798 goto abort;
2aa47728
NC
799 }
800 if(got < sizeof(target)) {
808ad2d0
NC
801 where = "short recv";
802 goto abort;
2aa47728 803 }
bf357333 804
808ad2d0
NC
805 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
806 where = "no cmsg";
807 goto abort;
808 }
809 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
810 where = "wrong cmsg_len";
811 goto abort;
812 }
813 if(cmptr->cmsg_level != SOL_SOCKET) {
814 where = "wrong cmsg_level";
815 goto abort;
816 }
817 if(cmptr->cmsg_type != SCM_RIGHTS) {
818 where = "wrong cmsg_type";
819 goto abort;
820 }
bf357333
NC
821
822 got_fd = *(int*)CMSG_DATA(cmptr);
823 /* For our last little bit of trickery, put the file descriptor
824 back into Perl_debug_log, as if we never actually closed it
825 */
808ad2d0
NC
826 if(got_fd != debug_fd) {
827 if (dup2(got_fd, debug_fd) == -1) {
828 where = "dup2";
829 goto abort;
830 }
831 }
2aa47728 832 sv_dump(target);
bf357333 833
2aa47728
NC
834 PerlIO_flush(Perl_debug_log);
835
808ad2d0 836 got = write(sock, &success, sizeof(success));
2aa47728
NC
837
838 if(got < 0) {
808ad2d0
NC
839 where = "write failed";
840 goto abort;
2aa47728 841 }
808ad2d0
NC
842 if(got < sizeof(success)) {
843 where = "short write";
844 goto abort;
2aa47728
NC
845 }
846 }
847 _exit(0);
808ad2d0
NC
848 abort:
849 {
850 int send_errno = errno;
851 unsigned char length = (unsigned char) strlen(where);
852 struct iovec failure[3] = {
853 {(void*)&send_errno, sizeof(send_errno)},
854 {&length, 1},
855 {(void*)where, length}
856 };
857 int got = writev(sock, failure, 3);
858 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
859 in the parent if we try to read from the socketpair after the
860 child has exited, even if there was data to read.
861 So sleep a bit to give the parent a fighting chance of
862 reading the data. */
863 sleep(2);
864 _exit((got == -1) ? errno : 0);
865 }
bf357333 866 /* End of child. */
2aa47728 867 }
41e4abd8 868 PL_dumper_fd = fd[0];
2aa47728
NC
869 close(fd[1]);
870 }
871#endif
872
ff0cee69
PP
873 /* We must account for everything. */
874
875 /* Destroy the main CV and syntax tree */
37e77c23
FC
876 /* Set PL_curcop now, because destroying ops can cause new SVs
877 to be generated in Perl_pad_swipe, and when running with
878 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
879 op from which the filename structure member is copied. */
17fbfdf6 880 PL_curcop = &PL_compiling;
3280af22 881 if (PL_main_root) {
4e380990
DM
882 /* ensure comppad/curpad to refer to main's pad */
883 if (CvPADLIST(PL_main_cv)) {
884 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 885 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 886 }
3280af22 887 op_free(PL_main_root);
5f66b61c 888 PL_main_root = NULL;
a0d0e21e 889 }
5f66b61c 890 PL_main_start = NULL;
aac9d523
DM
891 /* note that PL_main_cv isn't usually actually freed at this point,
892 * due to the CvOUTSIDE refs from subs compiled within it. It will
893 * get freed once all the subs are freed in sv_clean_all(), for
894 * destruct_level > 0 */
3280af22 895 SvREFCNT_dec(PL_main_cv);
601f1833 896 PL_main_cv = NULL;
ca7b837b 897 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 898
13621cfb
NIS
899 /* Tell PerlIO we are about to tear things apart in case
900 we have layers which are using resources that should
901 be cleaned up now.
902 */
903
904 PerlIO_destruct(aTHX);
905
ddf23d4a
SM
906 /*
907 * Try to destruct global references. We do this first so that the
908 * destructors and destructees still exist. Some sv's might remain.
909 * Non-referenced objects are on their own.
910 */
911 sv_clean_objs();
8990e307 912
5cd24f17 913 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 914 SvREFCNT_dec(PL_warnhook);
a0714e2c 915 PL_warnhook = NULL;
3280af22 916 SvREFCNT_dec(PL_diehook);
a0714e2c 917 PL_diehook = NULL;
5cd24f17 918
4b556e6c 919 /* call exit list functions */
3280af22 920 while (PL_exitlistlen-- > 0)
acfe0abc 921 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 922
3280af22 923 Safefree(PL_exitlist);
4b556e6c 924
1c4916e5
CB
925 PL_exitlist = NULL;
926 PL_exitlistlen = 0;
927
a3e6e81e
NC
928 SvREFCNT_dec(PL_registered_mros);
929
551a8b83 930 /* jettison our possibly duplicated environment */
4b647fb0
DM
931 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
932 * so we certainly shouldn't free it here
933 */
2f42fcb0 934#ifndef PERL_MICRO
4b647fb0 935#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 936 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
937#ifdef USE_ITHREADS
938 /* only main thread can free environ[0] contents */
939 && PL_curinterp == aTHX
940#endif
941 )
942 {
551a8b83
JH
943 I32 i;
944
945 for (i = 0; environ[i]; i++)
4b420006 946 safesysfree(environ[i]);
0631ea03 947
4b420006
JH
948 /* Must use safesysfree() when working with environ. */
949 safesysfree(environ);
551a8b83
JH
950
951 environ = PL_origenviron;
952 }
953#endif
2f42fcb0 954#endif /* !PERL_MICRO */
551a8b83 955
30985c42
JH
956 if (destruct_level == 0) {
957
958 DEBUG_P(debprofdump());
959
960#if defined(PERLIO_LAYERS)
961 /* No more IO - including error messages ! */
962 PerlIO_cleanup(aTHX);
963#endif
964
965 CopFILE_free(&PL_compiling);
30985c42
JH
966
967 /* The exit() function will do everything that needs doing. */
968 return STATUS_EXIT;
969 }
970
9fa9f06b
KW
971 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
972
5f8cb046
DM
973#ifdef USE_ITHREADS
974 /* the syntax tree is shared between clones
975 * so op_free(PL_main_root) only ReREFCNT_dec's
976 * REGEXPs in the parent interpreter
977 * we need to manually ReREFCNT_dec for the clones
978 */
0547a729
DM
979 {
980 I32 i = AvFILLp(PL_regex_padav);
981 SV **ary = AvARRAY(PL_regex_padav);
982
983 for (; i; i--) {
984 SvREFCNT_dec(ary[i]);
985 ary[i] = &PL_sv_undef;
986 }
987 }
5f8cb046
DM
988#endif
989
0547a729 990
ad64d0ec 991 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
992 PL_stashcache = NULL;
993
5f05dabc
PP
994 /* loosen bonds of global variables */
995
2f9285f8
DM
996 /* XXX can PL_parser still be non-null here? */
997 if(PL_parser && PL_parser->rsfp) {
998 (void)PerlIO_close(PL_parser->rsfp);
999 PL_parser->rsfp = NULL;
8ebc5c01
PP
1000 }
1001
84386e14
RGS
1002 if (PL_minus_F) {
1003 Safefree(PL_splitstr);
1004 PL_splitstr = NULL;
1005 }
1006
8ebc5c01 1007 /* switches */
3280af22
NIS
1008 PL_minus_n = FALSE;
1009 PL_minus_p = FALSE;
1010 PL_minus_l = FALSE;
1011 PL_minus_a = FALSE;
1012 PL_minus_F = FALSE;
1013 PL_doswitches = FALSE;
599cee73 1014 PL_dowarn = G_WARN_OFF;
1a904fc8 1015#ifdef PERL_SAWAMPERSAND
d3b97530 1016 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 1017#endif
3280af22
NIS
1018 PL_unsafe = FALSE;
1019
1020 Safefree(PL_inplace);
bd61b366 1021 PL_inplace = NULL;
a7cb1f99 1022 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
1023
1024 if (PL_e_script) {
1025 SvREFCNT_dec(PL_e_script);
a0714e2c 1026 PL_e_script = NULL;
8ebc5c01
PP
1027 }
1028
bf9cdc68
RG
1029 PL_perldb = 0;
1030
8ebc5c01
PP
1031 /* magical thingies */
1032
e23d9e2f
CS
1033 SvREFCNT_dec(PL_ofsgv); /* *, */
1034 PL_ofsgv = NULL;
5f05dabc 1035
7889fe52 1036 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 1037 PL_ors_sv = NULL;
8ebc5c01 1038
3280af22 1039 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 1040 PL_rs = NULL;
dc92893f 1041
d33b2eba 1042 Safefree(PL_osname); /* $^O */
bd61b366 1043 PL_osname = NULL;
5f05dabc 1044
3280af22 1045 SvREFCNT_dec(PL_statname);
a0714e2c
SS
1046 PL_statname = NULL;
1047 PL_statgv = NULL;
5f05dabc 1048
8ebc5c01
PP
1049 /* defgv, aka *_ should be taken care of elsewhere */
1050
7d5ea4e7
GS
1051 /* float buffer */
1052 Safefree(PL_efloatbuf);
bd61b366 1053 PL_efloatbuf = NULL;
7d5ea4e7
GS
1054 PL_efloatsize = 0;
1055
8ebc5c01 1056 /* startup and shutdown function lists */
3280af22 1057 SvREFCNT_dec(PL_beginav);
5a837c8f 1058 SvREFCNT_dec(PL_beginav_save);
3280af22 1059 SvREFCNT_dec(PL_endav);
7d30b5c4 1060 SvREFCNT_dec(PL_checkav);
ece599bd 1061 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
1062 SvREFCNT_dec(PL_unitcheckav);
1063 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1064 SvREFCNT_dec(PL_initav);
7d49f689
NC
1065 PL_beginav = NULL;
1066 PL_beginav_save = NULL;
1067 PL_endav = NULL;
1068 PL_checkav = NULL;
1069 PL_checkav_save = NULL;
3c10abe3
AG
1070 PL_unitcheckav = NULL;
1071 PL_unitcheckav_save = NULL;
7d49f689 1072 PL_initav = NULL;
5618dfe8 1073
8ebc5c01 1074 /* shortcuts just get cleared */
a0714e2c
SS
1075 PL_hintgv = NULL;
1076 PL_errgv = NULL;
a0714e2c
SS
1077 PL_argvoutgv = NULL;
1078 PL_stdingv = NULL;
1079 PL_stderrgv = NULL;
1080 PL_last_in_gv = NULL;
a0714e2c
SS
1081 PL_DBsingle = NULL;
1082 PL_DBtrace = NULL;
1083 PL_DBsignal = NULL;
a6d69523
TC
1084 PL_DBsingle_iv = 0;
1085 PL_DBtrace_iv = 0;
1086 PL_DBsignal_iv = 0;
601f1833 1087 PL_DBcv = NULL;
7d49f689 1088 PL_dbargs = NULL;
5c284bb0 1089 PL_debstash = NULL;
8ebc5c01 1090
cf93a474 1091 SvREFCNT_dec(PL_envgv);
f03015cd 1092 SvREFCNT_dec(PL_incgv);
722fa0e9 1093 SvREFCNT_dec(PL_argvgv);
475b1e90 1094 SvREFCNT_dec(PL_replgv);
8cece913
FC
1095 SvREFCNT_dec(PL_DBgv);
1096 SvREFCNT_dec(PL_DBline);
1097 SvREFCNT_dec(PL_DBsub);
cf93a474 1098 PL_envgv = NULL;
f03015cd 1099 PL_incgv = NULL;
722fa0e9 1100 PL_argvgv = NULL;
475b1e90 1101 PL_replgv = NULL;
8cece913
FC
1102 PL_DBgv = NULL;
1103 PL_DBline = NULL;
1104 PL_DBsub = NULL;
1105
7a1c5554 1106 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1107 PL_argvout_stack = NULL;
8ebc5c01 1108
5c831c24 1109 SvREFCNT_dec(PL_modglobal);
5c284bb0 1110 PL_modglobal = NULL;
5c831c24 1111 SvREFCNT_dec(PL_preambleav);
7d49f689 1112 PL_preambleav = NULL;
5c831c24 1113 SvREFCNT_dec(PL_subname);
a0714e2c 1114 PL_subname = NULL;
ca0c25f6 1115#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1116 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1117 PL_pidstatus = NULL;
ca0c25f6 1118#endif
5c831c24 1119 SvREFCNT_dec(PL_toptarget);
a0714e2c 1120 PL_toptarget = NULL;
5c831c24 1121 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1122 PL_bodytarget = NULL;
1123 PL_formtarget = NULL;
5c831c24 1124
d33b2eba 1125 /* free locale stuff */
b9582b6a 1126#ifdef USE_LOCALE_COLLATE
d33b2eba 1127 Safefree(PL_collation_name);
bd61b366 1128 PL_collation_name = NULL;
b9582b6a 1129#endif
d33b2eba 1130
b9582b6a 1131#ifdef USE_LOCALE_NUMERIC
d33b2eba 1132 Safefree(PL_numeric_name);
bd61b366 1133 PL_numeric_name = NULL;
a453c169 1134 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1135 PL_numeric_radix_sv = NULL;
b9582b6a 1136#endif
d33b2eba 1137
f7416781
KW
1138 if (PL_langinfo_buf) {
1139 Safefree(PL_langinfo_buf);
1140 PL_langinfo_buf = NULL;
1141 }
1142
9c0b6888
KW
1143 /* clear character classes */
1144 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1145 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1146 PL_utf8_swash_ptrs[i] = NULL;
1147 }
5c831c24
GS
1148 SvREFCNT_dec(PL_utf8_mark);
1149 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1150 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1151 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1152 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1153 SvREFCNT_dec(PL_utf8_idstart);
1154 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1155 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1156 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1157 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1158 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1159 SvREFCNT_dec(PL_UpperLatin1);
1160 SvREFCNT_dec(PL_Latin1);
1161 SvREFCNT_dec(PL_NonL1NonFinalFold);
1162 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1163#ifdef USE_LOCALE_CTYPE
780fcc9f 1164 SvREFCNT_dec(PL_warn_locale);
5b7de470 1165#endif
a0714e2c
SS
1166 PL_utf8_mark = NULL;
1167 PL_utf8_toupper = NULL;
1168 PL_utf8_totitle = NULL;
1169 PL_utf8_tolower = NULL;
1170 PL_utf8_tofold = NULL;
1171 PL_utf8_idstart = NULL;
1172 PL_utf8_idcont = NULL;
2726813d 1173 PL_utf8_foldclosures = NULL;
9fa9f06b 1174 PL_AboveLatin1 = NULL;
e0a1ff7a 1175 PL_InBitmap = NULL;
9fa9f06b 1176 PL_HasMultiCharFold = NULL;
5b7de470 1177#ifdef USE_LOCALE_CTYPE
780fcc9f 1178 PL_warn_locale = NULL;
5b7de470 1179#endif
9fa9f06b
KW
1180 PL_Latin1 = NULL;
1181 PL_NonL1NonFinalFold = NULL;
1182 PL_UpperLatin1 = NULL;
86f72d56 1183 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1184 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1185 PL_XPosix_ptrs[i] = NULL;
86f72d56 1186 }
64935bc6 1187 PL_GCB_invlist = NULL;
6b659339 1188 PL_LB_invlist = NULL;
06ae2722 1189 PL_SB_invlist = NULL;
ae3bb8ea 1190 PL_WB_invlist = NULL;
9e7ded3f 1191 PL_Assigned_invlist = NULL;
5c831c24 1192
971a9dd3 1193 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1194 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1195 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1196 cophh_free(CopHINTHASH_get(&PL_compiling));
1197 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1198 CopFILE_free(&PL_compiling);
5c831c24 1199
a0d0e21e 1200 /* Prepare to destruct main symbol table. */
5f05dabc 1201
3280af22 1202 hv = PL_defstash;
ca556bcd 1203 /* break ref loop *:: <=> %:: */
854da30f 1204 (void)hv_deletes(hv, "main::", G_DISCARD);
3280af22 1205 PL_defstash = 0;
a0d0e21e 1206 SvREFCNT_dec(hv);
5c831c24 1207 SvREFCNT_dec(PL_curstname);
a0714e2c 1208 PL_curstname = NULL;
a0d0e21e 1209
5a844595
GS
1210 /* clear queued errors */
1211 SvREFCNT_dec(PL_errors);
a0714e2c 1212 PL_errors = NULL;
5a844595 1213
dd69841b
BB
1214 SvREFCNT_dec(PL_isarev);
1215
a0d0e21e 1216 FREETMPS;
9b387841 1217 if (destruct_level >= 2) {
3280af22 1218 if (PL_scopestack_ix != 0)
9b387841
NC
1219 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1220 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1221 (long)PL_scopestack_ix);
3280af22 1222 if (PL_savestack_ix != 0)
9b387841
NC
1223 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1224 "Unbalanced saves: %ld more saves than restores\n",
1225 (long)PL_savestack_ix);
3280af22 1226 if (PL_tmps_floor != -1)
9b387841
NC
1227 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1228 (long)PL_tmps_floor + 1);
a0d0e21e 1229 if (cxstack_ix != -1)
9b387841
NC
1230 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1231 (long)cxstack_ix + 1);
a0d0e21e 1232 }
8990e307 1233
0547a729
DM
1234#ifdef USE_ITHREADS
1235 SvREFCNT_dec(PL_regex_padav);
1236 PL_regex_padav = NULL;
1237 PL_regex_pad = NULL;
1238#endif
1239
776df701 1240#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1241 /* the entries in this list are allocated via SV PVX's, so get freed
1242 * in sv_clean_all */
1243 Safefree(PL_my_cxt_list);
776df701 1244#endif
57bb2458 1245
8990e307 1246 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1247
1248 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1249 while (sv_clean_all() > 2)
5226ed68
JH
1250 ;
1251
23083432
FC
1252#ifdef USE_ITHREADS
1253 Safefree(PL_stashpad); /* must come after sv_clean_all */
1254#endif
1255
d4777f27
GS
1256 AvREAL_off(PL_fdpid); /* no surviving entries */
1257 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1258 PL_fdpid = NULL;
d33b2eba 1259
6c644e78
GS
1260#ifdef HAVE_INTERP_INTERN
1261 sys_intern_clear();
1262#endif
1263
a38ab475
RZ
1264 /* constant strings */
1265 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1266 SvREFCNT_dec(PL_sv_consts[i]);
1267 PL_sv_consts[i] = NULL;
1268 }
1269
6e72f9df
PP
1270 /* Destruct the global string table. */
1271 {
1272 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1273 * so that sv_free() won't fail on them.
80459961
NC
1274 * Now that the global string table is using a single hunk of memory
1275 * for both HE and HEK, we either need to explicitly unshare it the
1276 * correct way, or actually free things here.
6e72f9df 1277 */
80459961
NC
1278 I32 riter = 0;
1279 const I32 max = HvMAX(PL_strtab);
c4420975 1280 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1281 HE *hent = array[0];
1282
6e72f9df 1283 for (;;) {
0453d815 1284 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1285 HE * const next = HeNEXT(hent);
9014280d 1286 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1287 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1288 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1289 Safefree(hent);
1290 hent = next;
6e72f9df
PP
1291 }
1292 if (!hent) {
1293 if (++riter > max)
1294 break;
1295 hent = array[riter];
1296 }
1297 }
80459961
NC
1298
1299 Safefree(array);
1300 HvARRAY(PL_strtab) = 0;
1301 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1302 }
3280af22 1303 SvREFCNT_dec(PL_strtab);
6e72f9df 1304
e652bb2f 1305#ifdef USE_ITHREADS
c21d1a0f 1306 /* free the pointer tables used for cloning */
a0739874 1307 ptr_table_free(PL_ptr_table);
bf9cdc68 1308 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1309#endif
a0739874 1310
d33b2eba
GS
1311 /* free special SVs */
1312
1313 SvREFCNT(&PL_sv_yes) = 0;
1314 sv_clear(&PL_sv_yes);
1315 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1316 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1317
1318 SvREFCNT(&PL_sv_no) = 0;
1319 sv_clear(&PL_sv_no);
1320 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1321 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1322
5a6c2837
DM
1323 SvREFCNT(&PL_sv_zero) = 0;
1324 sv_clear(&PL_sv_zero);
1325 SvANY(&PL_sv_zero) = NULL;
1326 SvFLAGS(&PL_sv_zero) = 0;
1327
9f375a43
DM
1328 {
1329 int i;
1330 for (i=0; i<=2; i++) {
1331 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1332 sv_clear(PERL_DEBUG_PAD(i));
1333 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1334 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1335 }
1336 }
1337
0453d815 1338 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1339 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1340
eba0f806
DM
1341#ifdef DEBUG_LEAKING_SCALARS
1342 if (PL_sv_count != 0) {
1343 SV* sva;
1344 SV* sv;
eb578fdb 1345 SV* svend;
eba0f806 1346
ad64d0ec 1347 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1348 svend = &sva[SvREFCNT(sva)];
1349 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1350 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1351 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1352 " flags=0x%"UVxf
fd0854ff 1353 " refcnt=%"UVuf pTHX__FORMAT "\n"
147e3846
KW
1354 "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");"
1355 "serial %" UVuf "\n",
574b8821
NC
1356 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1357 pTHX__VALUE,
fd0854ff
DM
1358 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1359 sv->sv_debug_line,
1360 sv->sv_debug_inpad ? "for" : "by",
1361 sv->sv_debug_optype ?
1362 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1363 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1364 sv->sv_debug_serial
fd0854ff 1365 );
2aa47728 1366#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1367 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1368#endif
eba0f806
DM
1369 }
1370 }
1371 }
1372 }
2aa47728
NC
1373#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1374 {
1375 int status;
1376 fd_set rset;
1377 /* Wait for up to 4 seconds for child to terminate.
1378 This seems to be the least effort way of timing out on reaping
1379 its exit status. */
1380 struct timeval waitfor = {4, 0};
41e4abd8 1381 int sock = PL_dumper_fd;
2aa47728
NC
1382
1383 shutdown(sock, 1);
1384 FD_ZERO(&rset);
1385 FD_SET(sock, &rset);
1386 select(sock + 1, &rset, NULL, NULL, &waitfor);
1387 waitpid(child, &status, WNOHANG);
1388 close(sock);
1389 }
1390#endif
eba0f806 1391#endif
77abb4c6
NC
1392#ifdef DEBUG_LEAKING_SCALARS_ABORT
1393 if (PL_sv_count)
1394 abort();
1395#endif
bf9cdc68 1396 PL_sv_count = 0;
eba0f806 1397
56a2bab7 1398#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1399 /* No more IO - including error messages ! */
1400 PerlIO_cleanup(aTHX);
1401#endif
1402
9f4bd222 1403 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1404 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1405 for no arg - and will try and SvREFCNT_dec it.
1406 */
1407 SvREFCNT(&PL_sv_undef) = 0;
1408 SvREADONLY_off(&PL_sv_undef);
1409
3280af22 1410 Safefree(PL_origfilename);
bd61b366 1411 PL_origfilename = NULL;
43c5f42d 1412 Safefree(PL_reg_curpm);
dd28f7bb 1413 free_tied_hv_pool();
3280af22 1414 Safefree(PL_op_mask);
cf36064f 1415 Safefree(PL_psig_name);
bf9cdc68 1416 PL_psig_name = (SV**)NULL;
d525a7b2 1417 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1418 {
1419 /* We need to NULL PL_psig_pend first, so that
1420 signal handlers know not to use it */
1421 int *psig_save = PL_psig_pend;
1422 PL_psig_pend = (int*)NULL;
1423 Safefree(psig_save);
1424 }
6e72f9df 1425 nuke_stacks();
284167a5
SM
1426 TAINTING_set(FALSE);
1427 TAINT_WARN_set(FALSE);
3280af22 1428 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1429
a0d0e21e 1430 DEBUG_P(debprofdump());
d33b2eba 1431
b173165c
FC
1432 PL_debug = 0;
1433
e5dd39fc 1434#ifdef USE_REENTRANT_API
10bc17b6 1435 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1436#endif
1437
a24da70b
NC
1438 /* These all point to HVs that are about to be blown away.
1439 Code in core and on CPAN assumes that if the interpreter is re-started
1440 that they will be cleanly NULL or pointing to a valid HV. */
1441 PL_custom_op_names = NULL;
1442 PL_custom_op_descs = NULL;
1443 PL_custom_ops = NULL;
1444
612f20c3
GS
1445 sv_free_arenas();
1446
5d9a96ca
DM
1447 while (PL_regmatch_slab) {
1448 regmatch_slab *s = PL_regmatch_slab;
1449 PL_regmatch_slab = PL_regmatch_slab->next;
1450 Safefree(s);
1451 }
1452
fc36a67e
PP
1453 /* As the absolutely last thing, free the non-arena SV for mess() */
1454
3280af22 1455 if (PL_mess_sv) {
f350b448
NC
1456 /* we know that type == SVt_PVMG */
1457
9c63abab 1458 /* it could have accumulated taint magic */
f350b448
NC
1459 MAGIC* mg;
1460 MAGIC* moremagic;
1461 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1462 moremagic = mg->mg_moremagic;
1463 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1464 && mg->mg_len >= 0)
1465 Safefree(mg->mg_ptr);
1466 Safefree(mg);
9c63abab 1467 }
f350b448 1468
fc36a67e 1469 /* we know that type >= SVt_PV */
8bd4d4c5 1470 SvPV_free(PL_mess_sv);
3280af22
NIS
1471 Safefree(SvANY(PL_mess_sv));
1472 Safefree(PL_mess_sv);
a0714e2c 1473 PL_mess_sv = NULL;
fc36a67e 1474 }
37038d91 1475 return STATUS_EXIT;
79072805
LW
1476}
1477
954c1994
GS
1478/*
1479=for apidoc perl_free
1480
1481Releases a Perl interpreter. See L<perlembed>.
1482
1483=cut
1484*/
1485
79072805 1486void
0cb96387 1487perl_free(pTHXx)
79072805 1488{
5174512c
NC
1489 dVAR;
1490
7918f24d
NC
1491 PERL_ARGS_ASSERT_PERL_FREE;
1492
c301d606
DM
1493 if (PL_veto_cleanup)
1494 return;
1495
7cb608b5 1496#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1497 {
1498 /*
1499 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1500 * value as we're probably hunting memory leaks then
1501 */
36e77d41 1502 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1503 const U32 old_debug = PL_debug;
55ef9aae
MHM
1504 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1505 thread at thread exit. */
4fd0a9b8
NC
1506 if (DEBUG_m_TEST) {
1507 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1508 "free this thread's memory\n");
1509 PL_debug &= ~ DEBUG_m_FLAG;
1510 }
6edcbed6
DD
1511 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1512 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1513 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1514 safesysfree(ptr);
1515 }
4fd0a9b8 1516 PL_debug = old_debug;
55ef9aae
MHM
1517 }
1518 }
7cb608b5
NC
1519#endif
1520
acfe0abc 1521#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1522# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1523 {
acfe0abc 1524# ifdef NETWARE
7af12a34 1525 void *host = nw_internal_host;
7af12a34 1526 PerlMem_free(aTHXx);
7af12a34 1527 nw_delete_internal_host(host);
acfe0abc 1528# else
bdb50480
NC
1529 void *host = w32_internal_host;
1530 PerlMem_free(aTHXx);
7af12a34 1531 win32_delete_internal_host(host);
acfe0abc 1532# endif
7af12a34 1533 }
1c0ca838
GS
1534# else
1535 PerlMem_free(aTHXx);
1536# endif
acfe0abc
GS
1537#else
1538 PerlMem_free(aTHXx);
76e3520e 1539#endif
79072805
LW
1540}
1541
b7f7fff6 1542#if defined(USE_ITHREADS)
aebd1ac7
GA
1543/* provide destructors to clean up the thread key when libperl is unloaded */
1544#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1545
826955bd 1546#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1547#pragma fini "perl_fini"
666ad1ec
GA
1548#elif defined(__sun) && !defined(__GNUC__)
1549#pragma fini (perl_fini)
aebd1ac7
GA
1550#endif
1551
0dbb1585
AL
1552static void
1553#if defined(__GNUC__)
1554__attribute__((destructor))
aebd1ac7 1555#endif
de009b76 1556perl_fini(void)
aebd1ac7 1557{
27da23d5 1558 dVAR;
5c64bffd
NC
1559 if (
1560#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1561 my_vars &&
1562#endif
1563 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1564 FREE_THREAD_KEY;
1565}
1566
1567#endif /* WIN32 */
1568#endif /* THREADS */
1569
4b556e6c 1570void
864dbfa3 1571Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1572{
3280af22
NIS
1573 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1574 PL_exitlist[PL_exitlistlen].fn = fn;
1575 PL_exitlist[PL_exitlistlen].ptr = ptr;
1576 ++PL_exitlistlen;
4b556e6c
JD
1577}
1578
954c1994
GS
1579/*
1580=for apidoc perl_parse
1581
1582Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1583
1584=cut
1585*/
1586
03d9f026
FC
1587#define SET_CURSTASH(newstash) \
1588 if (PL_curstash != newstash) { \
1589 SvREFCNT_dec(PL_curstash); \
1590 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1591 }
1592
79072805 1593int
0cb96387 1594perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1595{
27da23d5 1596 dVAR;
6224f72b 1597 I32 oldscope;
6224f72b 1598 int ret;
db36c5a1 1599 dJMPENV;
8d063cd8 1600
7918f24d
NC
1601 PERL_ARGS_ASSERT_PERL_PARSE;
1602#ifndef MULTIPLICITY
ed6c66dd 1603 PERL_UNUSED_ARG(my_perl);
7918f24d 1604#endif
1a237f4f 1605#if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG)
b0891165 1606 {
7dc86639
YO
1607 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1608
22ff3130 1609 if (s && strEQ(s, "1")) {
25c1b134
TC
1610 const unsigned char *seed= PERL_HASH_SEED;
1611 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1612 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1613 while (seed < seed_end) {
1614 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1615 }
6a5b4183
YO
1616#ifdef PERL_HASH_RANDOMIZE_KEYS
1617 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1618 PL_HASH_RAND_BITS_ENABLED,
1619 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1620#endif
7dc86639
YO
1621 PerlIO_printf(Perl_debug_log, "\n");
1622 }
b0891165 1623 }
1a237f4f 1624#endif /* #if (defined(USE_HASH_SEED) ... */
43238333 1625
ea34f6bd 1626#ifdef __amigaos4__
43238333
AB
1627 {
1628 struct NameTranslationInfo nti;
1629 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1630 }
1631#endif
1632
3280af22 1633 PL_origargc = argc;
e2975953 1634 PL_origargv = argv;
a0d0e21e 1635
a2722ac9
GA
1636 if (PL_origalen != 0) {
1637 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1638 }
1639 else {
3cb9023d
JH
1640 /* Set PL_origalen be the sum of the contiguous argv[]
1641 * elements plus the size of the env in case that it is
e9137a8e 1642 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1643 * as the maximum modifiable length of $0. In the worst case
1644 * the area we are able to modify is limited to the size of
43c32782 1645 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1646 * --jhi */
e1ec3a88 1647 const char *s = NULL;
b7249aaf 1648 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1649 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1650 const UV aligned =
43c32782
JH
1651 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1652
1653 /* See if all the arguments are contiguous in memory. Note
1654 * that 'contiguous' is a loose term because some platforms
1655 * align the argv[] and the envp[]. If the arguments look
1656 * like non-aligned, assume that they are 'strictly' or
1657 * 'traditionally' contiguous. If the arguments look like
1658 * aligned, we just check that they are within aligned
1659 * PTRSIZE bytes. As long as no system has something bizarre
1660 * like the argv[] interleaved with some other data, we are
1661 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb 1662 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
19742f39 1663 int i;
c8941eeb
JH
1664 while (*s) s++;
1665 for (i = 1; i < PL_origargc; i++) {
1666 if ((PL_origargv[i] == s + 1
43c32782 1667#ifdef OS2
c8941eeb 1668 || PL_origargv[i] == s + 2
43c32782 1669#endif
c8941eeb
JH
1670 )
1671 ||
1672 (aligned &&
1673 (PL_origargv[i] > s &&
1674 PL_origargv[i] <=
1675 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1676 )
1677 {
1678 s = PL_origargv[i];
1679 while (*s) s++;
1680 }
1681 else
1682 break;
54bfe034 1683 }
54bfe034 1684 }
a4a109c2
JD
1685
1686#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1687 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1688 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1689 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1690 ||
1691 (aligned &&
1692 (PL_origenviron[0] > s &&
1693 PL_origenviron[0] <=
1694 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1695 )
1696 {
19742f39 1697 int i;
9d419b5f 1698#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1699 s = PL_origenviron[0];
1700 while (*s) s++;
1701#endif
bd61b366 1702 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1703 /* Force copy of environment. */
1704 for (i = 1; PL_origenviron[i]; i++) {
1705 if (PL_origenviron[i] == s + 1
1706 ||
1707 (aligned &&
1708 (PL_origenviron[i] > s &&
1709 PL_origenviron[i] <=
1710 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1711 )
1712 {
1713 s = PL_origenviron[i];
1714 while (*s) s++;
1715 }
1716 else
1717 break;
54bfe034 1718 }
43c32782 1719 }
54bfe034 1720 }
a4a109c2
JD
1721#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1722
2d2af554 1723 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1724 }
1725
3280af22 1726 if (PL_do_undump) {
a0d0e21e
LW
1727
1728 /* Come here if running an undumped a.out. */
1729
3280af22
NIS
1730 PL_origfilename = savepv(argv[0]);
1731 PL_do_undump = FALSE;
a0d0e21e 1732 cxstack_ix = -1; /* start label stack again */
748a9306 1733 init_ids();
284167a5 1734 assert (!TAINT_get);
b7975bdd 1735 TAINT;
e2051532 1736 set_caret_X();
b7975bdd 1737 TAINT_NOT;
a0d0e21e
LW
1738 init_postdump_symbols(argc,argv,env);
1739 return 0;
1740 }
1741
3280af22 1742 if (PL_main_root) {
3280af22 1743 op_free(PL_main_root);
5f66b61c 1744 PL_main_root = NULL;
ff0cee69 1745 }
5f66b61c 1746 PL_main_start = NULL;
3280af22 1747 SvREFCNT_dec(PL_main_cv);
601f1833 1748 PL_main_cv = NULL;
79072805 1749
3280af22
NIS
1750 time(&PL_basetime);
1751 oldscope = PL_scopestack_ix;
599cee73 1752 PL_dowarn = G_WARN_OFF;
f86702cc 1753
14dd3ad8 1754 JMPENV_PUSH(ret);
6224f72b 1755 switch (ret) {
312caa8e 1756 case 0:
14dd3ad8 1757 parse_body(env,xsinit);
9ebf26ad 1758 if (PL_unitcheckav) {
3c10abe3 1759 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1760 }
1761 if (PL_checkav) {
ca7b837b 1762 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1763 call_list(oldscope, PL_checkav);
9ebf26ad 1764 }
14dd3ad8
GS
1765 ret = 0;
1766 break;
6224f72b
GS
1767 case 1:
1768 STATUS_ALL_FAILURE;
924ba076 1769 /* FALLTHROUGH */
6224f72b
GS
1770 case 2:
1771 /* my_exit() was called */
3280af22 1772 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1773 LEAVE;
1774 FREETMPS;
03d9f026 1775 SET_CURSTASH(PL_defstash);
9ebf26ad 1776 if (PL_unitcheckav) {
3c10abe3 1777 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1778 }
1779 if (PL_checkav) {
ca7b837b 1780 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1781 call_list(oldscope, PL_checkav);
9ebf26ad 1782 }
37038d91 1783 ret = STATUS_EXIT;
14dd3ad8 1784 break;
6224f72b 1785 case 3:
bf49b057 1786 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1787 ret = 1;
1788 break;
6224f72b 1789 }
14dd3ad8
GS
1790 JMPENV_POP;
1791 return ret;
1792}
1793
4a5df386
NC
1794/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1795 miniperl, and we need to see those flags reflected in the values here. */
1796
1797/* What this returns is subject to change. Use the public interface in Config.
1798 */
1799static void
1800S_Internals_V(pTHX_ CV *cv)
1801{
1802 dXSARGS;
1803#ifdef LOCAL_PATCH_COUNT
1804 const int local_patch_count = LOCAL_PATCH_COUNT;
1805#else
1806 const int local_patch_count = 0;
1807#endif
2dc296d2 1808 const int entries = 3 + local_patch_count;
4a5df386 1809 int i;
fe1c5936 1810 static const char non_bincompat_options[] =
4a5df386
NC
1811# ifdef DEBUGGING
1812 " DEBUGGING"
1813# endif
1814# ifdef NO_MATHOMS
0d311fbe 1815 " NO_MATHOMS"
4a5df386 1816# endif
59b86f4b
DM
1817# ifdef NO_HASH_SEED
1818 " NO_HASH_SEED"
1819# endif
3b0e4ee2
MB
1820# ifdef NO_TAINT_SUPPORT
1821 " NO_TAINT_SUPPORT"
1822# endif
cb26ef7a
MB
1823# ifdef PERL_BOOL_AS_CHAR
1824 " PERL_BOOL_AS_CHAR"
1825# endif
93c10d60
FC
1826# ifdef PERL_COPY_ON_WRITE
1827 " PERL_COPY_ON_WRITE"
1828# endif
4a5df386
NC
1829# ifdef PERL_DISABLE_PMC
1830 " PERL_DISABLE_PMC"
1831# endif
1832# ifdef PERL_DONT_CREATE_GVSV
1833 " PERL_DONT_CREATE_GVSV"
1834# endif
9a044a43
NC
1835# ifdef PERL_EXTERNAL_GLOB
1836 " PERL_EXTERNAL_GLOB"
1837# endif
59b86f4b
DM
1838# ifdef PERL_HASH_FUNC_SIPHASH
1839 " PERL_HASH_FUNC_SIPHASH"
1840# endif
1841# ifdef PERL_HASH_FUNC_SDBM
1842 " PERL_HASH_FUNC_SDBM"
1843# endif
1844# ifdef PERL_HASH_FUNC_DJB2
1845 " PERL_HASH_FUNC_DJB2"
1846# endif
1847# ifdef PERL_HASH_FUNC_SUPERFAST
1848 " PERL_HASH_FUNC_SUPERFAST"
1849# endif
1850# ifdef PERL_HASH_FUNC_MURMUR3
1851 " PERL_HASH_FUNC_MURMUR3"
1852# endif
1853# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1854 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1855# endif
1856# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1857 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1858# endif
1859# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1860 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1861# endif
4a5df386
NC
1862# ifdef PERL_IS_MINIPERL
1863 " PERL_IS_MINIPERL"
1864# endif
1865# ifdef PERL_MALLOC_WRAP
1866 " PERL_MALLOC_WRAP"
1867# endif
1868# ifdef PERL_MEM_LOG
1869 " PERL_MEM_LOG"
1870# endif
1871# ifdef PERL_MEM_LOG_NOIMPL
1872 " PERL_MEM_LOG_NOIMPL"
1873# endif
4e499636
DM
1874# ifdef PERL_OP_PARENT
1875 " PERL_OP_PARENT"
1876# endif
59b86f4b
DM
1877# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1878 " PERL_PERTURB_KEYS_DETERMINISTIC"
1879# endif
1880# ifdef PERL_PERTURB_KEYS_DISABLED
1881 " PERL_PERTURB_KEYS_DISABLED"
1882# endif
1883# ifdef PERL_PERTURB_KEYS_RANDOM
1884 " PERL_PERTURB_KEYS_RANDOM"
1885# endif
c3cf41ec
NC
1886# ifdef PERL_PRESERVE_IVUV
1887 " PERL_PRESERVE_IVUV"
1888# endif
c051e30b
NC
1889# ifdef PERL_RELOCATABLE_INCPUSH
1890 " PERL_RELOCATABLE_INCPUSH"
1891# endif
4a5df386
NC
1892# ifdef PERL_USE_DEVEL
1893 " PERL_USE_DEVEL"
1894# endif
1895# ifdef PERL_USE_SAFE_PUTENV
1896 " PERL_USE_SAFE_PUTENV"
1897# endif
102b7877
YO
1898# ifdef SILENT_NO_TAINT_SUPPORT
1899 " SILENT_NO_TAINT_SUPPORT"
1900# endif
a3749cf3
NC
1901# ifdef UNLINK_ALL_VERSIONS
1902 " UNLINK_ALL_VERSIONS"
1903# endif
de618ee4
NC
1904# ifdef USE_ATTRIBUTES_FOR_PERLIO
1905 " USE_ATTRIBUTES_FOR_PERLIO"
1906# endif
4a5df386
NC
1907# ifdef USE_FAST_STDIO
1908 " USE_FAST_STDIO"
1909# endif
98548bdf
NC
1910# ifdef USE_LOCALE
1911 " USE_LOCALE"
1912# endif
98548bdf
NC
1913# ifdef USE_LOCALE_CTYPE
1914 " USE_LOCALE_CTYPE"
1915# endif
6937817d
DD
1916# ifdef WIN32_NO_REGISTRY
1917 " USE_NO_REGISTRY"
1918# endif
5a8d8935
NC
1919# ifdef USE_PERL_ATOF
1920 " USE_PERL_ATOF"
1921# endif
0d311fbe
NC
1922# ifdef USE_SITECUSTOMIZE
1923 " USE_SITECUSTOMIZE"
1924# endif
4a5df386
NC
1925 ;
1926 PERL_UNUSED_ARG(cv);
d3db1514 1927 PERL_UNUSED_VAR(items);
4a5df386
NC
1928
1929 EXTEND(SP, entries);
1930
1931 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1932 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1933 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1934
6baa8dbd
NT
1935#ifndef PERL_BUILD_DATE
1936# ifdef __DATE__
1937# ifdef __TIME__
1938# define PERL_BUILD_DATE __DATE__ " " __TIME__
1939# else
1940# define PERL_BUILD_DATE __DATE__
1941# endif
1942# endif
1943#endif
1944
1945#ifdef PERL_BUILD_DATE
4a5df386 1946 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1947 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1948 SVs_TEMP));
4a5df386
NC
1949#else
1950 PUSHs(&PL_sv_undef);
1951#endif
1952
4a5df386
NC
1953 for (i = 1; i <= local_patch_count; i++) {
1954 /* This will be an undef, if PL_localpatches[i] is NULL. */
1955 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1956 }
1957
1958 XSRETURN(entries);
1959}
1960
be71fc8f
NC
1961#define INCPUSH_UNSHIFT 0x01
1962#define INCPUSH_ADD_OLD_VERS 0x02
1963#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1964#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1965#define INCPUSH_NOT_BASEDIR 0x10
1966#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1967#define INCPUSH_ADD_SUB_DIRS \
1968 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1969
312caa8e 1970STATIC void *
14dd3ad8 1971S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1972{
27da23d5 1973 dVAR;
2f9285f8 1974 PerlIO *rsfp;
312caa8e 1975 int argc = PL_origargc;
8f42b153 1976 char **argv = PL_origargv;
e1ec3a88 1977 const char *scriptname = NULL;
402582ca 1978 bool dosearch = FALSE;
eb578fdb 1979 char c;
737c24fc 1980 bool doextract = FALSE;
bd61b366 1981 const char *cddir = NULL;
ab019eaa 1982#ifdef USE_SITECUSTOMIZE
20ef40cf 1983 bool minus_f = FALSE;
ab019eaa 1984#endif
95670bde 1985 SV *linestr_sv = NULL;
5486870f 1986 bool add_read_e_script = FALSE;
87606032 1987 U32 lex_start_flags = 0;
009d90df 1988
ca7b837b 1989 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1990
6224f72b 1991 init_main_stash();
54310121 1992
c7030b81
NC
1993 {
1994 const char *s;
6224f72b
GS
1995 for (argc--,argv++; argc > 0; argc--,argv++) {
1996 if (argv[0][0] != '-' || !argv[0][1])
1997 break;
6224f72b
GS
1998 s = argv[0]+1;
1999 reswitch:
47f56822 2000 switch ((c = *s)) {
729a02f2 2001 case 'C':
1d5472a9
GS
2002#ifndef PERL_STRICT_CR
2003 case '\r':
2004#endif
6224f72b
GS
2005 case ' ':
2006 case '0':
2007 case 'F':
2008 case 'a':
2009 case 'c':
2010 case 'd':
2011 case 'D':
2012 case 'h':
2013 case 'i':
2014 case 'l':
2015 case 'M':
2016 case 'm':
2017 case 'n':
2018 case 'p':
2019 case 's':
2020 case 'u':
2021 case 'U':
2022 case 'v':
599cee73
PM
2023 case 'W':
2024 case 'X':
6224f72b 2025 case 'w':
97bd5664 2026 if ((s = moreswitches(s)))
6224f72b
GS
2027 goto reswitch;
2028 break;
33b78306 2029
1dbad523 2030 case 't':
dc6d7f5c 2031#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2032 /* silently ignore */
dc6d7f5c 2033#elif defined(NO_TAINT_SUPPORT)
3231f579 2034 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2035 "Cowardly refusing to run with -t or -T flags");
2036#else
22f7c9c9 2037 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
2038 if( !TAINTING_get ) {
2039 TAINT_WARN_set(TRUE);
2040 TAINTING_set(TRUE);
317ea90d 2041 }
284167a5 2042#endif
317ea90d
MS
2043 s++;
2044 goto reswitch;
6224f72b 2045 case 'T':
dc6d7f5c 2046#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2047 /* silently ignore */
dc6d7f5c 2048#elif defined(NO_TAINT_SUPPORT)
3231f579 2049 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2050 "Cowardly refusing to run with -t or -T flags");
2051#else
22f7c9c9 2052 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2053 TAINTING_set(TRUE);
2054 TAINT_WARN_set(FALSE);
2055#endif
6224f72b
GS
2056 s++;
2057 goto reswitch;
f86702cc 2058
bc9b29db
RH
2059 case 'E':
2060 PL_minus_E = TRUE;
924ba076 2061 /* FALLTHROUGH */
6224f72b 2062 case 'e':
f20b2998 2063 forbid_setid('e', FALSE);
3280af22 2064 if (!PL_e_script) {
396482e1 2065 PL_e_script = newSVpvs("");
5486870f 2066 add_read_e_script = TRUE;
6224f72b
GS
2067 }
2068 if (*++s)
3280af22 2069 sv_catpv(PL_e_script, s);
6224f72b 2070 else if (argv[1]) {
3280af22 2071 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
2072 argc--,argv++;
2073 }
2074 else
47f56822 2075 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2076 sv_catpvs(PL_e_script, "\n");
6224f72b 2077 break;
afe37c7d 2078
20ef40cf 2079 case 'f':
f5542d3a 2080#ifdef USE_SITECUSTOMIZE
20ef40cf 2081 minus_f = TRUE;
f5542d3a 2082#endif
20ef40cf
GA
2083 s++;
2084 goto reswitch;
2085
6224f72b 2086 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2087 forbid_setid('I', FALSE);
bd61b366 2088 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
2089 argc--,argv++;
2090 }
6224f72b 2091 if (s && *s) {
0df16ed7 2092 STRLEN len = strlen(s);
55b4bc1c 2093 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
2094 }
2095 else
a67e862a 2096 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2097 break;
6224f72b 2098 case 'S':
f20b2998 2099 forbid_setid('S', FALSE);
6224f72b
GS
2100 dosearch = TRUE;
2101 s++;
2102 goto reswitch;
2103 case 'V':
7edfd0ef
NC
2104 {
2105 SV *opts_prog;
2106
7edfd0ef 2107 if (*++s != ':') {
37ca4a5b 2108 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2109 }
2110 else {
2111 ++s;
2112 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2113 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2114 0, s, 0);
2115 s += strlen(s);
2116 }
37ca4a5b 2117 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2118 /* don't look for script or read stdin */
2119 scriptname = BIT_BUCKET;
2120 goto reswitch;
6224f72b 2121 }
6224f72b 2122 case 'x':
737c24fc 2123 doextract = TRUE;
6224f72b 2124 s++;
304334da 2125 if (*s)
f4c556ac 2126 cddir = s;
6224f72b
GS
2127 break;
2128 case 0:
2129 break;
2130 case '-':
2131 if (!*++s || isSPACE(*s)) {
2132 argc--,argv++;
2133 goto switch_end;
2134 }
ee8bc8b7
NC
2135 /* catch use of gnu style long options.
2136 Both of these exit immediately. */
2137 if (strEQ(s, "version"))
2138 minus_v();
2139 if (strEQ(s, "help"))
2140 usage();
6224f72b 2141 s--;
924ba076 2142 /* FALLTHROUGH */
6224f72b 2143 default:
cea2e8a9 2144 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2145 }
2146 }
c7030b81
NC
2147 }
2148
6224f72b 2149 switch_end:
54310121 2150
c7030b81
NC
2151 {
2152 char *s;
2153
f675dbe5
CB
2154 if (
2155#ifndef SECURE_INTERNAL_GETENV
284167a5 2156 !TAINTING_get &&
f675dbe5 2157#endif
cf756827 2158 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2159 {
9e0b0d62
KW
2160 /* s points to static memory in getenv(), which may be overwritten at
2161 * any time; use a mortal copy instead */
2162 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2163
74288ac8
GS
2164 while (isSPACE(*s))
2165 s++;
317ea90d 2166 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2167#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2168 /* silently ignore */
dc6d7f5c 2169#elif defined(NO_TAINT_SUPPORT)
3231f579 2170 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2171 "Cowardly refusing to run with -t or -T flags");
2172#else
22f7c9c9 2173 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2174 TAINTING_set(TRUE);
2175 TAINT_WARN_set(FALSE);
2176#endif
317ea90d 2177 }
74288ac8 2178 else {
bd61b366 2179 char *popt_copy = NULL;
74288ac8 2180 while (s && *s) {
54913509 2181 const char *d;
74288ac8
GS
2182 while (isSPACE(*s))
2183 s++;
2184 if (*s == '-') {
2185 s++;
2186 if (isSPACE(*s))
2187 continue;
2188 }
4ea8f8fb 2189 d = s;
74288ac8
GS
2190 if (!*s)
2191 break;
2b622f1a 2192 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2193 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2194 while (++s && *s) {
2195 if (isSPACE(*s)) {
cf756827 2196 if (!popt_copy) {
bfa6c418
NC
2197 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2198 s = popt_copy + (s - d);
2199 d = popt_copy;
cf756827 2200 }
4ea8f8fb
MS
2201 *s++ = '\0';
2202 break;
2203 }
2204 }
1c4db469 2205 if (*d == 't') {
dc6d7f5c 2206#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2207 /* silently ignore */
dc6d7f5c 2208#elif defined(NO_TAINT_SUPPORT)
3231f579 2209 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2210 "Cowardly refusing to run with -t or -T flags");
2211#else
2212 if( !TAINTING_get) {
2213 TAINT_WARN_set(TRUE);
2214 TAINTING_set(TRUE);
317ea90d 2215 }
284167a5 2216#endif
1c4db469 2217 } else {
97bd5664 2218 moreswitches(d);
1c4db469 2219 }
6224f72b 2220 }
6224f72b
GS
2221 }
2222 }
c7030b81 2223 }
a0d0e21e 2224
d6295071
TC
2225#ifndef NO_PERL_INTERNAL_RAND_SEED
2226 /* If we're not set[ug]id, we might have honored
2227 PERL_INTERNAL_RAND_SEED in perl_construct().
2228 At this point command-line options have been parsed, so if
2229 we're now tainting and not set[ug]id re-seed.
2230 This could possibly be wasteful if PERL_INTERNAL_RAND_SEED is invalid,
2231 but avoids duplicating the logic from perl_construct().
2232 */
2233 if (PL_tainting &&
2234 PerlProc_getuid() == PerlProc_geteuid() &&
2235 PerlProc_getgid() == PerlProc_getegid()) {
2236 Perl_drand48_init_r(&PL_internal_random_state, seed());
2237 }
2238#endif
2239
c29067d7
CH
2240 /* Set $^X early so that it can be used for relocatable paths in @INC */
2241 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2242 assert (!TAINT_get);
c29067d7 2243 TAINT;
e2051532 2244 set_caret_X();
c29067d7
CH
2245 TAINT_NOT;
2246
43c0c913 2247#if defined(USE_SITECUSTOMIZE)
20ef40cf 2248 if (!minus_f) {
43c0c913 2249 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2250 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2251 ie a q() operator with a NUL byte as a the delimiter. This avoids
2252 problems with pathnames containing (say) ' */
43c0c913
NC
2253# ifdef PERL_IS_MINIPERL
2254 AV *const inc = GvAV(PL_incgv);
2255 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2256
2257 if (inc0) {
15870c5c
NC
2258 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2259 it should be reported immediately as a build failure. */
43c0c913
NC
2260 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2261 Perl_newSVpvf(aTHX_
147e3846 2262 "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; "
af26e4f2
FC
2263 "do {local $!; -f $f }"
2264 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2265 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2266 }
2267# else
2268 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2269 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2270 if (raw_sitelib) {
2271 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2272 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2273 INCPUSH_CAN_RELOCATE);
2274 const char *const sitelib = SvPVX(sitelib_sv);
2275 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2276 Perl_newSVpvf(aTHX_
2277 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2278 0, SVfARG(sitelib), 0,
2279 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2280 assert (SvREFCNT(sitelib_sv) == 1);
2281 SvREFCNT_dec(sitelib_sv);
2282 }
43c0c913 2283# endif
20ef40cf
GA
2284 }
2285#endif
2286
6224f72b
GS
2287 if (!scriptname)
2288 scriptname = argv[0];
3280af22 2289 if (PL_e_script) {
6224f72b
GS
2290 argc++,argv--;
2291 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2292 }
bd61b366 2293 else if (scriptname == NULL) {
6224f72b
GS
2294#ifdef MSDOS
2295 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2296 moreswitches("h");
6224f72b
GS
2297#endif
2298 scriptname = "-";
2299 }
2300
284167a5 2301 assert (!TAINT_get);
2cace6ac 2302 init_perllib();
6224f72b 2303
a52eba0e 2304 {
f20b2998 2305 bool suidscript = FALSE;
829372d3 2306
8d113837 2307 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2308 if (!rsfp) {
2309 rsfp = PerlIO_stdin();
87606032 2310 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2311 }
6224f72b 2312
b24bc095 2313 validate_suid(rsfp);
6224f72b 2314
64ca3a65 2315#ifndef PERL_MICRO
a52eba0e
NC
2316# if defined(SIGCHLD) || defined(SIGCLD)
2317 {
2318# ifndef SIGCHLD
2319# define SIGCHLD SIGCLD
2320# endif
2321 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2322 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2323 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2324 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2325 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2326 }
0b5b802d 2327 }
a52eba0e 2328# endif
64ca3a65 2329#endif
0b5b802d 2330
737c24fc 2331 if (doextract) {
faef540c 2332
f20b2998 2333 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2334 setuid scripts. */
2335 forbid_setid('x', suidscript);
f20b2998 2336 /* Hence you can't get here if suidscript is true */
faef540c 2337
95670bde
NC
2338 linestr_sv = newSV_type(SVt_PV);
2339 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2340 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2341 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2342 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2343 }
f4c556ac 2344 }
6224f72b 2345
ea726b52 2346 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2347 CvUNIQUE_on(PL_compcv);
2348
eacbb379 2349 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2350
dd69841b
BB
2351 PL_isarev = newHV();
2352
0c4f7ff0 2353 boot_core_PerlIO();
6224f72b 2354 boot_core_UNIVERSAL();
e1a479c5 2355 boot_core_mro();
4a5df386 2356 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2357
2358 if (xsinit)
acfe0abc 2359 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2360#ifndef PERL_MICRO
739a0b84 2361#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2362 init_os_extras();
6224f72b 2363#endif
64ca3a65 2364#endif
6224f72b 2365
29209bc5 2366#ifdef USE_SOCKS
1b9c9cf5
DH
2367# ifdef HAS_SOCKS5_INIT
2368 socks5_init(argv[0]);
2369# else
29209bc5 2370 SOCKSinit(argv[0]);
1b9c9cf5 2371# endif
ac27b0f5 2372#endif
29209bc5 2373
6224f72b
GS
2374 init_predump_symbols();
2375 /* init_postdump_symbols not currently designed to be called */
2376 /* more than once (ENV isn't cleared first, for example) */
2377 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2378 if (!PL_do_undump)
6224f72b
GS
2379 init_postdump_symbols(argc,argv,env);
2380
27da23d5
JH
2381 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2382 * or explicitly in some platforms.
73e1bd1a 2383 * PL_utf8locale is conditionally turned on by
085a54d9 2384 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2385 * look like the user wants to use UTF-8. */
a0fd4948 2386#if defined(__SYMBIAN32__)
27da23d5
JH
2387 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2388#endif
e27b5b51 2389# ifndef PERL_IS_MINIPERL
06e66572
JH
2390 if (PL_unicode) {
2391 /* Requires init_predump_symbols(). */
a05d7ebb 2392 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2393 IO* io;
2394 PerlIO* fp;
2395 SV* sv;
2396
a05d7ebb 2397 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2398 * and the default open disciplines. */
a05d7ebb
JH
2399 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2400 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2401 (fp = IoIFP(io)))
2402 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2403 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2404 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2405 (fp = IoOFP(io)))
2406 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2407 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2408 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2409 (fp = IoOFP(io)))
2410 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2411 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2412 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2413 SVt_PV)))) {
a05d7ebb
JH
2414 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2415 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2416 if (in) {
2417 if (out)
76f68e9b 2418 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2419 else
76f68e9b 2420 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2421 }
2422 else if (out)
76f68e9b 2423 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2424 SvSETMAGIC(sv);
2425 }
b310b053
JH
2426 }
2427 }
e27b5b51 2428#endif
b310b053 2429
c7030b81
NC
2430 {
2431 const char *s;
4ffa73a3
JH
2432 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2433 if (strEQ(s, "unsafe"))
2434 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2435 else if (strEQ(s, "safe"))
2436 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2437 else
2438 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2439 }
c7030b81 2440 }
4ffa73a3 2441
81d86705 2442
87606032 2443 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2444 SvREFCNT_dec(linestr_sv);
95670bde 2445
219f7226 2446 PL_subname = newSVpvs("main");
6224f72b 2447
5486870f
DM
2448 if (add_read_e_script)
2449 filter_add(read_e_script, NULL);
2450
6224f72b
GS
2451 /* now parse the script */
2452
93189314 2453 SETERRNO(0,SS_NORMAL);
28ac2b49 2454 if (yyparse(GRAMPROG) || PL_parser->error_count) {
c77da5ff 2455 abort_execution("", PL_origfilename);
6224f72b 2456 }
57843af0 2457 CopLINE_set(PL_curcop, 0);
03d9f026 2458 SET_CURSTASH(PL_defstash);
3280af22
NIS
2459 if (PL_e_script) {
2460 SvREFCNT_dec(PL_e_script);
a0714e2c 2461 PL_e_script = NULL;
6224f72b
GS
2462 }
2463
3280af22 2464 if (PL_do_undump)
6224f72b
GS
2465 my_unexec();
2466
57843af0
GS
2467 if (isWARN_ONCE) {
2468 SAVECOPFILE(PL_curcop);
2469 SAVECOPLINE(PL_curcop);
3280af22 2470 gv_check(PL_defstash);
57843af0 2471 }
6224f72b
GS
2472
2473 LEAVE;
2474 FREETMPS;
2475
2476#ifdef MYMALLOC
f6a607bc
RGS
2477 {
2478 const char *s;
22ff3130
HS
2479 UV uv;
2480 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2481 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2482 dump_mstats("after compilation:");
f6a607bc 2483 }
6224f72b
GS
2484#endif
2485
2486 ENTER;
febb3a6d 2487 PL_restartjmpenv = NULL;
3280af22 2488 PL_restartop = 0;
312caa8e 2489 return NULL;
6224f72b
GS
2490}
2491
954c1994
GS
2492/*
2493=for apidoc perl_run
2494
2495Tells a Perl interpreter to run. See L<perlembed>.
2496
2497=cut
2498*/
2499
6224f72b 2500int
0cb96387 2501perl_run(pTHXx)
6224f72b 2502{
6224f72b 2503 I32 oldscope;
14dd3ad8 2504 int ret = 0;
db36c5a1 2505 dJMPENV;
6224f72b 2506
7918f24d
NC
2507 PERL_ARGS_ASSERT_PERL_RUN;
2508#ifndef MULTIPLICITY
ed6c66dd 2509 PERL_UNUSED_ARG(my_perl);
7918f24d 2510#endif
9d4ba2ae 2511
3280af22 2512 oldscope = PL_scopestack_ix;
96e176bf
CL
2513#ifdef VMS
2514 VMSISH_HUSHED = 0;
2515#endif
6224f72b 2516
14dd3ad8 2517 JMPENV_PUSH(ret);
6224f72b
GS
2518 switch (ret) {
2519 case 1:
2520 cxstack_ix = -1; /* start context stack again */
312caa8e 2521 goto redo_body;
14dd3ad8 2522 case 0: /* normal completion */
14dd3ad8
GS
2523 redo_body:
2524 run_body(oldscope);
924ba076 2525 /* FALLTHROUGH */
14dd3ad8 2526 case 2: /* my_exit() */
3280af22 2527 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2528 LEAVE;
2529 FREETMPS;
03d9f026 2530 SET_CURSTASH(PL_defstash);
3a1ee7e8 2531 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2532 PL_endav && !PL_minus_c) {
ca7b837b 2533 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2534 call_list(oldscope, PL_endav);
9ebf26ad 2535 }
6224f72b
GS
2536#ifdef MYMALLOC
2537 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2538 dump_mstats("after execution: ");
2539#endif
37038d91 2540 ret = STATUS_EXIT;
14dd3ad8 2541 break;
6224f72b 2542 case 3:
312caa8e
CS
2543 if (PL_restartop) {
2544 POPSTACK_TO(PL_mainstack);
2545 goto redo_body;
6224f72b 2546 }
5637ef5b 2547 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2548 FREETMPS;
14dd3ad8
GS
2549 ret = 1;
2550 break;
6224f72b
GS
2551 }
2552
14dd3ad8
GS
2553 JMPENV_POP;
2554 return ret;
312caa8e
CS
2555}
2556
dd374669 2557STATIC void
14dd3ad8
GS
2558S_run_body(pTHX_ I32 oldscope)
2559{
d3b97530
DM
2560 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2561 PL_sawampersand ? "Enabling" : "Omitting",
2562 (unsigned int)(PL_sawampersand)));
6224f72b 2563
3280af22 2564 if (!PL_restartop) {
cf2782cd 2565#ifdef DEBUGGING
f0e3f042
CS
2566 if (DEBUG_x_TEST || DEBUG_B_TEST)
2567 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2568 if (!DEBUG_q_TEST)
2569 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2570#endif
6224f72b 2571
3280af22 2572 if (PL_minus_c) {
bf49b057 2573 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2574 my_exit(0);
2575 }
3280af22 2576 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2577 PL_DBsingle_iv = 1;
9ebf26ad 2578 if (PL_initav) {
ca7b837b 2579 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2580 call_list(oldscope, PL_initav);
9ebf26ad 2581 }
f1fac472 2582#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2583 if (PL_main_root && PL_main_root->op_slabbed)
2584 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2585#endif
6224f72b
GS
2586 }
2587
2588 /* do it */
2589
ca7b837b 2590 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2591
3280af22 2592 if (PL_restartop) {
febb3a6d 2593 PL_restartjmpenv = NULL;
533c011a 2594 PL_op = PL_restartop;
3280af22 2595 PL_restartop = 0;
cea2e8a9 2596 CALLRUNOPS(aTHX);
6224f72b 2597 }
3280af22
NIS
2598 else if (PL_main_start) {
2599 CvDEPTH(PL_main_cv) = 1;
533c011a 2600 PL_op = PL_main_start;
cea2e8a9 2601 CALLRUNOPS(aTHX);
6224f72b 2602 }
f6b3007c 2603 my_exit(0);
e5964223 2604 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2605}
2606
954c1994 2607/*
ccfc67b7
JH
2608=head1 SV Manipulation Functions
2609
954c1994
GS
2610=for apidoc p||get_sv
2611
64ace3f8 2612Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2613C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2614Perl variable does not exist then it will be created. If C<flags> is zero
2615and the variable does not exist then NULL is returned.
954c1994
GS
2616
2617=cut
2618*/
2619
6224f72b 2620SV*
64ace3f8 2621Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2622{
2623 GV *gv;
7918f24d
NC
2624
2625 PERL_ARGS_ASSERT_GET_SV;
2626
64ace3f8 2627 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2628 if (gv)
2629 return GvSV(gv);
a0714e2c 2630 return NULL;
6224f72b
GS
2631}
2632
954c1994 2633/*
ccfc67b7
JH
2634=head1 Array Manipulation Functions
2635
954c1994
GS
2636=for apidoc p||get_av
2637
f0b90de1
SF
2638Returns the AV of the specified Perl global or package array with the given
2639name (so it won't work on lexical variables). C<flags> are passed
72d33970 2640to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2641Perl variable does not exist then it will be created. If C<flags> is zero
2642and the variable does not exist then NULL is returned.
954c1994 2643
f0b90de1
SF
2644Perl equivalent: C<@{"$name"}>.
2645
954c1994
GS
2646=cut
2647*/
2648
6224f72b 2649AV*
cbfd0a87 2650Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2651{
cbfd0a87 2652 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2653
2654 PERL_ARGS_ASSERT_GET_AV;
2655
cbfd0a87 2656 if (flags)
6224f72b
GS
2657 return GvAVn(gv);
2658 if (gv)
2659 return GvAV(gv);
7d49f689 2660 return NULL;
6224f72b
GS
2661}
2662
954c1994 2663/*
ccfc67b7
JH
2664=head1 Hash Manipulation Functions
2665
954c1994
GS
2666=for apidoc p||get_hv
2667
6673a63c 2668Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2669C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2670Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2671and the variable does not exist then C<NULL> is returned.
954c1994
GS
2672
2673=cut
2674*/
2675
6224f72b 2676HV*
6673a63c 2677Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2678{
6673a63c 2679 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2680
2681 PERL_ARGS_ASSERT_GET_HV;
2682
6673a63c 2683 if (flags)
a0d0e21e
LW
2684 return GvHVn(gv);
2685 if (gv)
2686 return GvHV(gv);
5c284bb0 2687 return NULL;
a0d0e21e
LW
2688}
2689
954c1994 2690/*
ccfc67b7
JH
2691=head1 CV Manipulation Functions
2692
780a5241
NC
2693=for apidoc p||get_cvn_flags
2694
2695Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2696C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2697exist then it will be declared (which has the same effect as saying
2698C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2699then NULL is returned.
2700
954c1994
GS
2701=for apidoc p||get_cv
2702
780a5241 2703Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2704
2705=cut
2706*/
2707
a0d0e21e 2708CV*
780a5241 2709Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2710{
780a5241 2711 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2712
2713 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2714
334dda80
FC
2715 /* XXX this is probably not what they think they're getting.
2716 * It has the same effect as "sub name;", i.e. just a forward
2717 * declaration! */
780a5241 2718 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2719 return newSTUB(gv,0);
780a5241 2720 }
a0d0e21e 2721 if (gv)
8ebc5c01 2722 return GvCVu(gv);
601f1833 2723 return NULL;
a0d0e21e
LW
2724}
2725
2c67934f
NC
2726/* Nothing in core calls this now, but we can't replace it with a macro and
2727 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2728CV*
2729Perl_get_cv(pTHX_ const char *name, I32 flags)
2730{
7918f24d
NC
2731 PERL_ARGS_ASSERT_GET_CV;
2732
780a5241
NC
2733 return get_cvn_flags(name, strlen(name), flags);
2734}
2735
79072805
LW
2736/* Be sure to refetch the stack pointer after calling these routines. */
2737
954c1994 2738/*
ccfc67b7
JH
2739
2740=head1 Callback Functions
2741
954c1994
GS
2742=for apidoc p||call_argv
2743
f0b90de1 2744Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2745with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2746L<perlcall>.
f0b90de1
SF
2747
2748Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2749
2750=cut
2751*/
2752
a0d0e21e 2753I32
5aaab254 2754Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2755
8ac85365
NIS
2756 /* See G_* flags in cop.h */
2757 /* null terminated arg list */
8990e307 2758{
a0d0e21e 2759 dSP;
8990e307 2760
7918f24d
NC
2761 PERL_ARGS_ASSERT_CALL_ARGV;
2762
924508f0 2763 PUSHMARK(SP);
3dc78631
DM
2764 while (*argv) {
2765 mXPUSHs(newSVpv(*argv,0));
2766 argv++;
8990e307 2767 }
3dc78631 2768 PUTBACK;
864dbfa3 2769 return call_pv(sub_name, flags);
8990e307
LW
2770}
2771
954c1994
GS
2772/*
2773=for apidoc p||call_pv
2774
2775Performs a callback to the specified Perl sub. See L<perlcall>.
2776
2777=cut
2778*/
2779
a0d0e21e 2780I32
864dbfa3 2781Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2782 /* name of the subroutine */
2783 /* See G_* flags in cop.h */
a0d0e21e 2784{
7918f24d
NC
2785 PERL_ARGS_ASSERT_CALL_PV;
2786
0da0e728 2787 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2788}
2789
954c1994
GS
2790/*
2791=for apidoc p||call_method
2792
2793Performs a callback to the specified Perl method. The blessed object must
2794be on the stack. See L<perlcall>.
2795
2796=cut
2797*/
2798
a0d0e21e 2799I32
864dbfa3 2800Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2801 /* name of the subroutine */
2802 /* See G_* flags in cop.h */
a0d0e21e 2803{
46ca9bac 2804 STRLEN len;
c106c2be 2805 SV* sv;
7918f24d
NC
2806 PERL_ARGS_ASSERT_CALL_METHOD;
2807
46ca9bac 2808 len = strlen(methname);
c106c2be
RZ
2809 sv = flags & G_METHOD_NAMED
2810 ? sv_2mortal(newSVpvn_share(methname, len,0))
2811 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2812
c106c2be 2813 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2814}
2815
2816/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2817/*
2818=for apidoc p||call_sv
2819
078e2213
TC
2820Performs a callback to the Perl sub specified by the SV.
2821
7c0c544c 2822If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2823SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2824or C<SvPV(sv)> will be used as the name of the sub to call.
2825
2826If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2827C<SvPV(sv)> will be used as the name of the method to call.
2828
2829If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2830the name of the method to call.
2831
2832Some other values are treated specially for internal use and should
2833not be depended on.
2834
2835See L<perlcall>.
954c1994
GS
2836
2837=cut
2838*/
2839
a0d0e21e 2840I32
8162b70e 2841Perl_call_sv(pTHX_ SV *sv, volatile I32 flags)
8ac85365 2842 /* See G_* flags in cop.h */
a0d0e21e 2843{
5b434c73 2844 dVAR;
a0d0e21e 2845 LOGOP myop; /* fake syntax tree node */
b46e009d 2846 METHOP method_op;
aa689395 2847 I32 oldmark;
8162b70e 2848 volatile I32 retval = 0;
54310121 2849 bool oldcatch = CATCH_GET;
6224f72b 2850 int ret;
c4420975 2851 OP* const oldop = PL_op;
db36c5a1 2852 dJMPENV;
1e422769 2853
7918f24d
NC
2854 PERL_ARGS_ASSERT_CALL_SV;
2855
a0d0e21e
LW
2856 if (flags & G_DISCARD) {
2857 ENTER;
2858 SAVETMPS;
2859 }
2f8edad0
NC
2860 if (!(flags & G_WANT)) {
2861 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2862 */
2863 flags |= G_SCALAR;
2864 }
a0d0e21e 2865
aa689395 2866 Zero(&myop, 1, LOGOP);
f51d4af5 2867 if (!(flags & G_NOARGS))
aa689395 2868 myop.op_flags |= OPf_STACKED;
4f911530 2869 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2870 SAVEOP();
533c011a 2871 PL_op = (OP*)&myop;
aa689395 2872
8c9009ad 2873 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2874 dSP;
2875 EXTEND(SP, 1);
8c9009ad
DD
2876 PUSHs(sv);
2877 PUTBACK;
5b434c73 2878 }
aa689395 2879 oldmark = TOPMARK;
a0d0e21e 2880
3280af22 2881 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2882 /* Handle first BEGIN of -d. */
3280af22 2883 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2884 /* Try harder, since this may have been a sighandler, thus
2885 * curstash may be meaningless. */
ea726b52 2886 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2887 && !(flags & G_NODEBUG))
5ff48db8 2888 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2889
c106c2be 2890 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2891 Zero(&method_op, 1, METHOP);
2892 method_op.op_next = (OP*)&myop;
2893 PL_op = (OP*)&method_op;
c106c2be 2894 if ( flags & G_METHOD_NAMED ) {
b46e009d 2895 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2896 method_op.op_type = OP_METHOD_NAMED;
2897 method_op.op_u.op_meth_sv = sv;
c106c2be 2898 } else {
b46e009d 2899 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2900 method_op.op_type = OP_METHOD;
c106c2be
RZ
2901 }
2902 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2903 myop.op_type = OP_ENTERSUB;
968b3946
GS
2904 }
2905
312caa8e 2906 if (!(flags & G_EVAL)) {
0cdb2077 2907 CATCH_SET(TRUE);
d6f07c05 2908 CALL_BODY_SUB((OP*)&myop);
312caa8e 2909 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2910 CATCH_SET(oldcatch);
312caa8e
CS
2911 }
2912 else {
8e90e786 2913 I32 old_cxix;
d78bda3d 2914 myop.op_other = (OP*)&myop;
101d6365 2915 (void)POPMARK;
8e90e786 2916 old_cxix = cxstack_ix;
274ed8ae 2917 create_eval_scope(NULL, flags|G_FAKINGEVAL);
c318a6ee 2918 INCMARK;
a0d0e21e 2919
14dd3ad8 2920 JMPENV_PUSH(ret);
edb2152a 2921
6224f72b
GS
2922 switch (ret) {
2923 case 0:
14dd3ad8 2924 redo_body:
d6f07c05 2925 CALL_BODY_SUB((OP*)&myop);
312caa8e 2926 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2927 if (!(flags & G_KEEPERR)) {
ab69dbc2 2928 CLEAR_ERRSV();
8433848b 2929 }
a0d0e21e 2930 break;
6224f72b 2931 case 1:
f86702cc 2932 STATUS_ALL_FAILURE;
924ba076 2933 /* FALLTHROUGH */
6224f72b 2934 case 2:
a0d0e21e 2935 /* my_exit() was called */
03d9f026 2936 SET_CURSTASH(PL_defstash);
a0d0e21e 2937 FREETMPS;
14dd3ad8 2938 JMPENV_POP;
f86702cc 2939 my_exit_jump();
e5964223 2940 NOT_REACHED; /* NOTREACHED */
6224f72b 2941 case 3:
3280af22 2942 if (PL_restartop) {
febb3a6d 2943 PL_restartjmpenv = NULL;
533c011a 2944 PL_op = PL_restartop;
3280af22 2945 PL_restartop = 0;
312caa8e 2946 goto redo_body;
a0d0e21e 2947 }
3280af22 2948 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2949 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2950 retval = 0;
2951 else {
2952 retval = 1;
3280af22 2953 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2954 }
312caa8e 2955 break;
a0d0e21e 2956 }
a0d0e21e 2957
8e90e786
DM
2958 /* if we croaked, depending on how we croaked the eval scope
2959 * may or may not have already been popped */
2960 if (cxstack_ix > old_cxix) {
2961 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2962 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2963 delete_eval_scope();
8e90e786 2964 }
14dd3ad8 2965 JMPENV_POP;
a0d0e21e 2966 }
1e422769 2967
a0d0e21e 2968 if (flags & G_DISCARD) {
3280af22 2969 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2970 retval = 0;
2971 FREETMPS;
2972 LEAVE;
2973 }
533c011a 2974 PL_op = oldop;
a0d0e21e
LW
2975 return retval;
2976}
2977
6e72f9df 2978/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2979
954c1994
GS
2980/*
2981=for apidoc p||eval_sv
2982
72d33970 2983Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2984as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2985
2986=cut
2987*/
2988
a0d0e21e 2989I32
864dbfa3 2990Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2991
8ac85365 2992 /* See G_* flags in cop.h */
a0d0e21e 2993{
97aff369 2994 dVAR;
a0d0e21e 2995 UNOP myop; /* fake syntax tree node */
8162b70e
AC
2996 volatile I32 oldmark;
2997 volatile I32 retval = 0;
6224f72b 2998 int ret;
c4420975 2999 OP* const oldop = PL_op;
db36c5a1 3000 dJMPENV;
84902520 3001
7918f24d
NC
3002 PERL_ARGS_ASSERT_EVAL_SV;
3003
4633a7c4
LW
3004 if (flags & G_DISCARD) {
3005 ENTER;
3006 SAVETMPS;
3007 }
3008
462e5cf6 3009 SAVEOP();
533c011a 3010 PL_op = (OP*)&myop;
5ff48db8 3011 Zero(&myop, 1, UNOP);
5b434c73
DD
3012 {
3013 dSP;
3014 oldmark = SP - PL_stack_base;
3015 EXTEND(SP, 1);
3016 PUSHs(sv);
3017 PUTBACK;
3018 }
79072805 3019
4633a7c4
LW
3020 if (!(flags & G_NOARGS))
3021 myop.op_flags = OPf_STACKED;
6e72f9df 3022 myop.op_type = OP_ENTEREVAL;
4f911530 3023 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
3024 if (flags & G_KEEPERR)
3025 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
3026
3027 if (flags & G_RE_REPARSING)
3028 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 3029
dedbcade 3030 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 3031 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
3032 TAINT_PROPER("eval_sv()");
3033
14dd3ad8 3034 JMPENV_PUSH(ret);
6224f72b
GS
3035 switch (ret) {
3036 case 0:
14dd3ad8 3037 redo_body:
2ba65d5f
DM
3038 if (PL_op == (OP*)(&myop)) {
3039 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
3040 if (!PL_op)
3041 goto fail; /* failed in compilation */
3042 }
4aca2f62 3043 CALLRUNOPS(aTHX);
312caa8e 3044 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 3045 if (!(flags & G_KEEPERR)) {
ab69dbc2 3046 CLEAR_ERRSV();
8433848b 3047 }
4633a7c4 3048 break;
6224f72b 3049 case 1:
f86702cc 3050 STATUS_ALL_FAILURE;
924ba076 3051 /* FALLTHROUGH */
6224f72b 3052 case 2:
4633a7c4 3053 /* my_exit() was called */
03d9f026 3054 SET_CURSTASH(PL_defstash);
4633a7c4 3055 FREETMPS;
14dd3ad8 3056 JMPENV_POP;
f86702cc 3057 my_exit_jump();
e5964223 3058 NOT_REACHED; /* NOTREACHED */
6224f72b 3059 case 3:
3280af22 3060 if (PL_restartop) {
febb3a6d 3061 PL_restartjmpenv = NULL;
533c011a 3062 PL_op = PL_restartop;
3280af22 3063 PL_restartop = 0;
312caa8e 3064 goto redo_body;
4633a7c4 3065 }
4aca2f62 3066 fail:
3280af22 3067 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 3068 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
3069 retval = 0;
3070 else {
3071 retval = 1;
3280af22 3072 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 3073 }
312caa8e 3074 break;
4633a7c4
LW
3075 }
3076
14dd3ad8 3077 JMPENV_POP;
4633a7c4 3078 if (flags & G_DISCARD) {
3280af22 3079 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
3080 retval = 0;
3081 FREETMPS;
3082 LEAVE;
3083 }
533c011a 3084 PL_op = oldop;
4633a7c4
LW
3085 return retval;
3086}
3087
954c1994
GS
3088/*
3089=for apidoc p||eval_pv
3090
422791e4 3091Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
3092
3093=cut
3094*/
3095
137443ea 3096SV*
864dbfa3 3097Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3098{
137443ea
PP
3099 SV* sv = newSVpv(p, 0);
3100
7918f24d
NC
3101 PERL_ARGS_ASSERT_EVAL_PV;
3102
864dbfa3 3103 eval_sv(sv, G_SCALAR);
137443ea
PP
3104 SvREFCNT_dec(sv);
3105
ed1786ad
DD
3106 {
3107 dSP;
3108 sv = POPs;
3109 PUTBACK;
3110 }
137443ea 3111
eed484f9
DD
3112 /* just check empty string or undef? */
3113 if (croak_on_error) {
3114 SV * const errsv = ERRSV;
3115 if(SvTRUE_NN(errsv))
3116 /* replace with croak_sv? */
3117 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3118 }
137443ea
PP
3119
3120 return sv;
3121}
3122
4633a7c4
LW
3123/* Require a module. */
3124
954c1994 3125/*
ccfc67b7
JH
3126=head1 Embedding Functions
3127
954c1994
GS
3128=for apidoc p||require_pv
3129
7d3fb230
BS
3130Tells Perl to C<require> the file named by the string argument. It is
3131analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3132implemented that way; consider using load_module instead.
954c1994 3133
7d3fb230 3134=cut */
954c1994 3135
4633a7c4 3136void
864dbfa3 3137Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3138{
d3acc0f7 3139 dSP;
97aff369 3140 SV* sv;
7918f24d
NC
3141
3142 PERL_ARGS_ASSERT_REQUIRE_PV;
3143
e788e7d3 3144 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3145 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3146 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3147 POPSTACK;
79072805
LW
3148}
3149
76e3520e 3150STATIC void
b6f82619 3151S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3152{
ab821d7f 3153 /* This message really ought to be max 23 lines.
75c72d73 3154 * Removed -h because the user already knows that option. Others? */
fb73857a 3155
1566c39d
NC
3156 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3157 minimum of 509 character string literals. */
27da23d5 3158 static const char * const usage_msg[] = {
1566c39d
NC
3159" -0[octal] specify record separator (\\0, if no argument)\n"
3160" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3161" -C[number/list] enables the listed Unicode features\n"
3162" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3163" -d[:debugger] run program under debugger\n"
3164" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3165" -e program one line of program (several -e's allowed, omit programfile)\n"
3166" -E program like -e, but enables all optional features\n"
3167" -f don't do $sitelib/sitecustomize.pl at startup\n"
3168" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3169" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3170" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3171" -l[octal] enable line ending processing, specifies line terminator\n"
3172" -[mM][-]module execute \"use/no module...\" before executing program\n"
3173" -n assume \"while (<>) { ... }\" loop around program\n"
3174" -p assume loop like -n but print line also, like sed\n"
3175" -s enable rudimentary parsing for switches after programfile\n"
3176" -S look for programfile using PATH environment variable\n",
3177" -t enable tainting warnings\n"
3178" -T enable tainting checks\n"
3179" -u dump core after parsing program\n"
3180" -U allow unsafe operations\n"
3181" -v print version, patchlevel and license\n"
3182" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3183" -w enable many useful warnings\n"
1566c39d
NC
3184" -W enable all warnings\n"
3185" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3186" -X disable all warnings\n"
3187" \n"
3188"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3189NULL
3190};
27da23d5 3191 const char * const *p = usage_msg;
1566c39d 3192 PerlIO *out = PerlIO_stdout();
fb73857a 3193
1566c39d
NC
3194 PerlIO_printf(out,
3195 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3196 PL_origargv[0]);
fb73857a 3197 while (*p)
1566c39d 3198 PerlIO_puts(out, *p++);
b6f82619 3199 my_exit(0);
4633a7c4
LW
3200}
3201
b4ab917c
DM
3202/* convert a string of -D options (or digits) into an int.
3203 * sets *s to point to the char after the options */
3204
3205#ifdef DEBUGGING
3206int
e1ec3a88 3207Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3208{
27da23d5 3209 static const char * const usage_msgd[] = {
651b8f1a
NC
3210 " Debugging flag values: (see also -d)\n"
3211 " p Tokenizing and parsing (with v, displays parse stack)\n"
3212 " s Stack snapshots (with v, displays all stacks)\n"
3213 " l Context (loop) stack processing\n"
3214 " t Trace execution\n"
3215 " o Method and overloading resolution\n",
3216 " c String/numeric conversions\n"
3217 " P Print profiling info, source file input state\n"
3218 " m Memory and SV allocation\n"
3219 " f Format processing\n"
3220 " r Regular expression parsing and execution\n"
3221 " x Syntax tree dump\n",
3222 " u Tainting checks\n"
3223 " H Hash dump -- usurps values()\n"
3224 " X Scratchpad allocation\n"
3225 " D Cleaning up\n"
56967202 3226 " S Op slab allocation\n"
651b8f1a
NC
3227 " T Tokenising\n"
3228 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3229 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3230 " v Verbose: use in conjunction with other flags\n"
3231 " C Copy On Write\n"
3232 " A Consistency checks on internal structures\n"
3233 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3234 " M trace smart match resolution\n"
3235 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3236 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3237 " i trace PerlIO layer processing\n",
e6e64d9b
JC
3238 NULL
3239 };
22ff3130 3240 UV uv = 0;
7918f24d
NC
3241
3242 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3243
b4ab917c
DM
3244 if (isALPHA(**s)) {
3245 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3246 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3247
0eb30aeb 3248 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3249 const char * const d = strchr(debopts,**s);
b4ab917c 3250 if (d)
22ff3130 3251 uv |= 1 << (d - debopts);
b4ab917c 3252 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3253 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3254 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3255 }
3256 }
e6e64d9b 3257 else if (isDIGIT(**s)) {
96e440d2 3258 const char* e;
22ff3130 3259 if (grok_atoUV(*s, &uv, &e))
96e440d2 3260 *s = e;
0eb30aeb 3261 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3262 }
ddcf8bc1 3263 else if (givehelp) {
06e869a4 3264 const char *const *p = usage_msgd;
651b8f1a 3265 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3266 }
22ff3130 3267 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3268}
3269#endif
3270
79072805
LW
3271/* This routine handles any switches that can be given during run */
3272
c7030b81
NC
3273const char *
3274Perl_moreswitches(pTHX_ const char *s)
79072805 3275{
27da23d5 3276 dVAR;
84c133a0 3277 UV rschar;
0544e6df 3278 const char option = *s; /* used to remember option in -m/-M code */
79072805 3279
7918f24d
NC
3280 PERL_ARGS_ASSERT_MORESWITCHES;
3281
79072805
LW
3282 switch (*s) {
3283 case '0':
a863c7d1 3284 {
f2095865 3285 I32 flags = 0;
a3b680e6 3286 STRLEN numlen;
f2095865
JH
3287
3288 SvREFCNT_dec(PL_rs);
3289 if (s[1] == 'x' && s[2]) {
a3b680e6 3290 const char *e = s+=2;
f2095865
JH
3291 U8 *tmps;
3292
a3b680e6
AL
3293 while (*e)
3294 e++;
f2095865
JH
3295 numlen = e - s;
3296 flags = PERL_SCAN_SILENT_ILLDIGIT;
3297 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3298 if (s + numlen < e) {
3299 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3300 numlen = 0;
3301 s--;
3302 }
396482e1 3303 PL_rs = newSVpvs("");
10656159 3304 tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865 3305 uvchr_to_utf8(tmps, rschar);
5f560d8a 3306 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3307 SvUTF8_on(PL_rs);
3308 }
3309 else {
3310 numlen = 4;
3311 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3312 if (rschar & ~((U8)~0))
3313 PL_rs = &PL_sv_undef;
3314 else if (!rschar && numlen >= 2)
396482e1 3315 PL_rs = newSVpvs("");
f2095865
JH
3316 else {
3317 char ch = (char)rschar;
3318 PL_rs = newSVpvn(&ch, 1);
3319 }
3320 }
64ace3f8 3321 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3322 return s + numlen;
a863c7d1 3323 }
46487f74 3324 case 'C':
a05d7ebb 3325 s++;
dd374669 3326 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3327 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3328 PL_utf8cache = -1;
46487f74 3329 return s;
2304df62 3330 case 'F':
5fc691f1 3331 PL_minus_a = TRUE;
3280af22 3332 PL_minus_F = TRUE;
24ffa309 3333 PL_minus_n = TRUE;
ebce5377
RGS
3334 PL_splitstr = ++s;
3335 while (*s && !isSPACE(*s)) ++s;
e49e380e 3336 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3337 return s;
79072805 3338 case 'a':
3280af22 3339 PL_minus_a = TRUE;
24ffa309 3340 PL_minus_n = TRUE;
79072805
LW
3341 s++;
3342 return s;
3343 case 'c':
3280af22 3344 PL_minus_c = TRUE;
79072805
LW
3345 s++;
3346 return s;
3347 case 'd':
f20b2998 3348 forbid_setid('d', FALSE);
4633a7c4 3349 s++;
2cbb2ee1
RGS
3350
3351 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3352 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3353 ++s;
3354 my_setenv("PERL5DB_THREADED", "1");
3355 }
3356
70c94a19
RR
3357 /* The following permits -d:Mod to accepts arguments following an =
3358 in the fashion that -MSome::Mod does. */
3359 if (*s == ':' || *s == '=') {
b19934fb
NC
3360 const char *start;
3361 const char *end;
3362 SV *sv;
3363
3364 if (*++s == '-') {
3365 ++s;
3366 sv = newSVpvs("no Devel::");
3367 } else {
3368 sv = newSVpvs("use Devel::");
3369 }
3370
3371 start = s;
3372 end = s + strlen(s);
f85893a1 3373
b19934fb 3374 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3375 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3376 if (*s != '=')
f85893a1 3377 sv_catpvn(sv, start, end - start);
70c94a19
RR
3378 else {
3379 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3380 /* Don't use NUL as q// delimiter here, this string goes in the
3381 * environment. */
3382 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3383 }
f85893a1 3384 s = end;
184f32ec 3385 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3386 SvREFCNT_dec(sv);
4633a7c4 3387 }
ed094faf 3388 if (!PL_perldb) {
3280af22 3389 PL_perldb = PERLDB_ALL;
a0d0e21e 3390 init_debugger();
ed094faf 3391 }
79072805
LW
3392 return s;
3393 case 'D':
0453d815 3394 {
79072805 3395#ifdef DEBUGGING
f20b2998 3396 forbid_setid('D', FALSE);
b4ab917c 3397 s++;
dd374669 3398 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3399#else /* !DEBUGGING */
0453d815 3400 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3401 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3402 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3403 for (s++; isWORDCHAR(*s); s++) ;
79072805 3404#endif
79072805 3405 return s;
2b5060ae 3406 NOT_REACHED; /* NOTREACHED */
0453d815 3407 }
4633a7c4 3408 case 'h':
b6f82619 3409 usage();
2b5060ae
DM
3410 NOT_REACHED; /* NOTREACHED */
3411
79072805 3412 case 'i':
43c5f42d 3413 Safefree(PL_inplace);
5ef5d758 3414 {
d4c19fe8 3415 const char * const start = ++s;
5ef5d758
NC
3416 while (*s && !isSPACE(*s))
3417 ++s;
3418
3419 PL_inplace = savepvn(start, s - start);
3420 }
fb73857a 3421 return s;
4e49a025 3422 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3423 forbid_setid('I', FALSE);
fb73857a
PP
3424 ++s;
3425 while (*s && isSPACE(*s))
3426 ++s;
3427 if (*s) {
c7030b81 3428 const char *e, *p;
0df16ed7
GS
3429 p = s;
3430 /* ignore trailing spaces (possibly followed by other switches) */
3431 do {
3432 for (e = p; *e && !isSPACE(*e); e++) ;
3433 p = e;
3434 while (isSPACE(*p))
3435 p++;
3436 } while (*p && *p != '-');
55b4bc1c 3437 incpush(s, e-s,
e28f3139 3438 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3439 s = p;
3440 if (*s == '-')
3441 s++;
79072805
LW
3442 }
3443 else
a67e862a 3444 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3445 return s;
79072805 3446 case 'l':
3280af22 3447 PL_minus_l = TRUE;
79072805 3448 s++;
7889fe52
NIS
3449 if (PL_ors_sv) {
3450 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3451 PL_ors_sv = NULL;
7889fe52 3452 }
79072805 3453 if (isDIGIT(*s)) {
53305cf1 3454 I32 flags = 0;
a3b680e6 3455 STRLEN numlen;
396482e1 3456 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3457 numlen = 3 + (*s == '0');
3458 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3459 s += numlen;
3460 }
3461 else {
8bfdd7d9 3462 if (RsPARA(PL_rs)) {
396482e1 3463 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3464 }
3465 else {
8bfdd7d9 3466 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3467 }
79072805
LW
3468 }
3469 return s;
1a30305b 3470 case 'M':
f20b2998 3471 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3472 /* FALLTHROUGH */
1a30305b 3473 case 'm':
f20b2998 3474 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3475 if (*++s) {
c7030b81 3476 const char *start;
b64cb68c 3477 const char *end;
11343788 3478 SV *sv;
e1ec3a88 3479 const char *use = "use ";
0544e6df 3480 bool colon = FALSE;
a5f75d66 3481 /* -M-foo == 'no foo' */
d0043bd1
NC
3482 /* Leading space on " no " is deliberate, to make both
3483 possibilities the same length. */
3484 if (*s == '-') { use = " no "; ++s; }
3485 sv = newSVpvn(use,4);
a5f75d66 3486 start = s;
1a30305b 3487 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3488 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3489 if( *s++ == ':' ) {
3490 if( *s == ':' )
3491 s++;