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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);
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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
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155perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
156 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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GS
157 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
158 struct IPerlDir* ipD, struct IPerlSock* ipS,
159 struct IPerlProc* ipP)
160{
161 PerlInterpreter *my_perl;
7918f24d
NC
162
163 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
164
9f653bb5 165 /* Newx() needs interpreter, so call malloc() instead */
32e30700 166 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 167 S_init_tls_and_interp(my_perl);
32e30700
GS
168 Zero(my_perl, 1, PerlInterpreter);
169 PL_Mem = ipM;
7766f137
GS
170 PL_MemShared = ipMS;
171 PL_MemParse = ipMP;
32e30700
GS
172 PL_Env = ipE;
173 PL_StdIO = ipStd;
174 PL_LIO = ipLIO;
175 PL_Dir = ipD;
176 PL_Sock = ipS;
177 PL_Proc = ipP;
7cb608b5 178 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 179
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
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258#ifdef PERL_TRACE_OPS
259 Zero(PL_op_exec_cnt, OP_max+2, UV);
260#endif
261
0d96b528 262 init_constants();
34caed6d
DM
263
264 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 265 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
266
267 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 268#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 269 PL_pidstatus = newHV();
ca0c25f6 270#endif
79072805 271
396482e1 272 PL_rs = newSVpvs("\n");
dc92893f 273
cea2e8a9 274 init_stacks();
79072805 275
748a9306 276 init_ids();
a5f75d66 277
0927ade0 278 S_fixup_platform_bugs();
279
312caa8e 280 JMPENV_BOOTSTRAP;
f86702cc
PP
281 STATUS_ALL_SUCCESS;
282
0672f40e 283 init_i18nl10n(1);
0b5b802d 284
ab821d7f 285#if defined(LOCAL_PATCH_COUNT)
3280af22 286 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
287#endif
288
52853b95
GS
289#ifdef HAVE_INTERP_INTERN
290 sys_intern_init();
291#endif
292
3a1ee7e8 293 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 294
3280af22
NIS
295 PL_fdpid = newAV(); /* for remembering popen pids by fd */
296 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 297 PL_errors = newSVpvs("");
854da30f
YO
298 SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
299 SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
300 SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
1fcf4c12 301#ifdef USE_ITHREADS
402d2eb1
NC
302 /* First entry is a list of empty elements. It needs to be initialised
303 else all hell breaks loose in S_find_uninit_var(). */
304 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 305 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 306 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 307#endif
e5dd39fc 308#ifdef USE_REENTRANT_API
59bd0823 309 Perl_reentrant_init(aTHX);
e5dd39fc 310#endif
e6a172f3 311 if (PL_hash_seed_set == FALSE) {
9d5e3f1a
YO
312 /* Initialize the hash seed and state at startup. This must be
313 * done very early, before ANY hashes are constructed, and once
314 * setup is fixed for the lifetime of the process.
315 *
316 * If you decide to disable the seeding process you should choose
317 * a suitable seed yourself and define PERL_HASH_SEED to a well chosen
318 * string. See hv_func.h for details.
319 */
1a237f4f 320#if defined(USE_HASH_SEED)
9d5e3f1a 321 /* get the hash seed from the environment or from an RNG */
7dc86639 322 Perl_get_hash_seed(aTHX_ PL_hash_seed);
1a237f4f 323#else
9d5e3f1a
YO
324 /* they want a hard coded seed, check that it is long enough */
325 assert( strlen(PERL_HASH_SEED) >= PERL_HASH_SEED_BYTES );
1a237f4f 326#endif
e6a172f3 327
9d5e3f1a
YO
328 /* now we use the chosen seed to initialize the state -
329 * in some configurations this may be a relatively speaking
330 * expensive operation, but we only have to do it once at startup */
331 PERL_HASH_SEED_STATE(PERL_HASH_SEED,PL_hash_state);
332
333#ifdef PERL_USE_SINGLE_CHAR_HASH_CACHE
334 /* we can build a special cache for 0/1 byte keys, if people choose
335 * I suspect most of the time it is not worth it */
336 {
337 char str[2]="\0";
338 int i;
339 for (i=0;i<256;i++) {
340 str[0]= i;
341 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[i],str,1);
342 }
343 PERL_HASH_WITH_STATE(PL_hash_state,PL_hash_chars[256],str,0);
344 }
345#endif
346 /* at this point we have initialezed the hash function, and we can start
347 * constructing hashes */
348 PL_hash_seed_set= TRUE;
349 }
3d47000e
AB
350 /* Note that strtab is a rather special HV. Assumptions are made
351 about not iterating on it, and not adding tie magic to it.
352 It is properly deallocated in perl_destruct() */
353 PL_strtab = newHV();
354
9d5e3f1a
YO
355 /* SHAREKEYS tells us that the hash has its keys shared with PL_strtab,
356 * which is not the case with PL_strtab itself */
3d47000e 357 HvSHAREKEYS_off(PL_strtab); /* mandatory */
9d5e3f1a 358 hv_ksplit(PL_strtab, 1 << 11);
3d47000e 359
a38ab475
RZ
360 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
361
2f42fcb0
JH
362#ifndef PERL_MICRO
363# ifdef USE_ENVIRON_ARRAY
0631ea03 364 PL_origenviron = environ;
2f42fcb0 365# endif
0631ea03
AB
366#endif
367
5311654c 368 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 369 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
370 * The HZ if not originally defined has been by now
371 * been defined as CLK_TCK, if available. */
b6c36746 372#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
373 PL_clocktick = sysconf(_SC_CLK_TCK);
374 if (PL_clocktick <= 0)
375#endif
376 PL_clocktick = HZ;
377
081fc587
AB
378 PL_stashcache = newHV();
379
e8e3635e 380 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 381
27da23d5
JH
382#ifdef HAS_MMAP
383 if (!PL_mmap_page_size) {
384#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
385 {
386 SETERRNO(0, SS_NORMAL);
387# ifdef _SC_PAGESIZE
388 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
389# else
390 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
391# endif
392 if ((long) PL_mmap_page_size < 0) {
393 if (errno) {
44f8325f 394 SV * const error = ERRSV;
d4c19fe8 395 SvUPGRADE(error, SVt_PV);
0510663f 396 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
397 }
398 else
399 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
400 }
401 }
402#else
403# ifdef HAS_GETPAGESIZE
404 PL_mmap_page_size = getpagesize();
405# else
406# if defined(I_SYS_PARAM) && defined(PAGESIZE)
407 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
408# endif
409# endif
410#endif
411 if (PL_mmap_page_size <= 0)
412 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
413 (IV) PL_mmap_page_size);
414 }
415#endif /* HAS_MMAP */
416
417#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
418 PL_timesbase.tms_utime = 0;
419 PL_timesbase.tms_stime = 0;
420 PL_timesbase.tms_cutime = 0;
421 PL_timesbase.tms_cstime = 0;
422#endif
423
7d113631
NC
424 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
425
a3e6e81e 426 PL_registered_mros = newHV();
9e169432
NC
427 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
428 HvMAX(PL_registered_mros) = 0;
a3e6e81e 429
7b8dd5f4
KW
430 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
431 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
432 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
433 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
434 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
435 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
436 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
437 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
438 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
439 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
440 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
441 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
442 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
443 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
444 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
445 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 446 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
447 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
448 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 449 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
9e7ded3f 450 PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist);
6ebbc862
KW
451#ifdef USE_THREAD_SAFE_LOCALE
452 PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
453#endif
7b8dd5f4 454
8990e307 455 ENTER;
79072805
LW
456}
457
954c1994 458/*
62375a60
NIS
459=for apidoc nothreadhook
460
461Stub that provides thread hook for perl_destruct when there are
462no threads.
463
464=cut
465*/
466
467int
4e9e3734 468Perl_nothreadhook(pTHX)
62375a60 469{
96a5add6 470 PERL_UNUSED_CONTEXT;
62375a60
NIS
471 return 0;
472}
473
41e4abd8
NC
474#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
475void
476Perl_dump_sv_child(pTHX_ SV *sv)
477{
478 ssize_t got;
bf357333
NC
479 const int sock = PL_dumper_fd;
480 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
481 union control_un control;
482 struct msghdr msg;
808ad2d0 483 struct iovec vec[2];
bf357333 484 struct cmsghdr *cmptr;
808ad2d0
NC
485 int returned_errno;
486 unsigned char buffer[256];
41e4abd8 487
7918f24d
NC
488 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
489
bf357333 490 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
491 return;
492
493 PerlIO_flush(Perl_debug_log);
494
bf357333
NC
495 /* All these shenanigans are to pass a file descriptor over to our child for
496 it to dump out to. We can't let it hold open the file descriptor when it
497 forks, as the file descriptor it will dump to can turn out to be one end
498 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 499 be open, the wait would be forever.) */
bf357333
NC
500
501 msg.msg_control = control.control;
502 msg.msg_controllen = sizeof(control.control);
503 /* We're a connected socket so we don't need a destination */
504 msg.msg_name = NULL;
505 msg.msg_namelen = 0;
506 msg.msg_iov = vec;
808ad2d0 507 msg.msg_iovlen = 1;
bf357333
NC
508
509 cmptr = CMSG_FIRSTHDR(&msg);
510 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
511 cmptr->cmsg_level = SOL_SOCKET;
512 cmptr->cmsg_type = SCM_RIGHTS;
513 *((int *)CMSG_DATA(cmptr)) = 1;
514
515 vec[0].iov_base = (void*)&sv;
516 vec[0].iov_len = sizeof(sv);
517 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
518
519 if(got < 0) {
bf357333 520 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
521 abort();
522 }
bf357333
NC
523 if(got < sizeof(sv)) {
524 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
525 abort();
526 }
527
808ad2d0
NC
528 /* Return protocol is
529 int: errno value
530 unsigned char: length of location string (0 for empty)
531 unsigned char*: string (not terminated)
532 */
533 vec[0].iov_base = (void*)&returned_errno;
534 vec[0].iov_len = sizeof(returned_errno);
535 vec[1].iov_base = buffer;
536 vec[1].iov_len = 1;
537
538 got = readv(sock, vec, 2);
41e4abd8
NC
539
540 if(got < 0) {
541 perror("Debug leaking scalars parent read failed");
808ad2d0 542 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
543 abort();
544 }
808ad2d0 545 if(got < sizeof(returned_errno) + 1) {
41e4abd8 546 perror("Debug leaking scalars parent short read");
808ad2d0 547 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
548 abort();
549 }
550
808ad2d0
NC
551 if (*buffer) {
552 got = read(sock, buffer + 1, *buffer);
553 if(got < 0) {
554 perror("Debug leaking scalars parent read 2 failed");
555 PerlIO_flush(PerlIO_stderr());
556 abort();
557 }
558
559 if(got < *buffer) {
560 perror("Debug leaking scalars parent short read 2");
561 PerlIO_flush(PerlIO_stderr());
562 abort();
563 }
564 }
565
566 if (returned_errno || *buffer) {
567 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
568 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 569 returned_errno, Strerror(returned_errno));
41e4abd8
NC
570 }
571}
572#endif
573
62375a60 574/*
954c1994
GS
575=for apidoc perl_destruct
576
577Shuts down a Perl interpreter. See L<perlembed>.
578
579=cut
580*/
581
31d77e54 582int
0cb96387 583perl_destruct(pTHXx)
79072805 584{
27da23d5 585 dVAR;
be2ea8ed 586 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 587 HV *hv;
2aa47728 588#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
589 pid_t child;
590#endif
9c0b6888 591 int i;
8990e307 592
7918f24d
NC
593 PERL_ARGS_ASSERT_PERL_DESTRUCT;
594#ifndef MULTIPLICITY
ed6c66dd 595 PERL_UNUSED_ARG(my_perl);
7918f24d 596#endif
9d4ba2ae 597
3d22c4f0
GG
598 assert(PL_scopestack_ix == 1);
599
7766f137
GS
600 /* wait for all pseudo-forked children to finish */
601 PERL_WAIT_FOR_CHILDREN;
602
3280af22 603 destruct_level = PL_perl_destruct_level;
36e77d41 604#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 605 {
9d4ba2ae
AL
606 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
607 if (s) {
96e440d2
JH
608 int i;
609 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
610 i = -1;
611 } else {
22ff3130
HS
612 UV uv;
613 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
614 i = (int)uv;
615 else
616 i = 0;
96e440d2 617 }
36e77d41
DD
618#ifdef DEBUGGING
619 if (destruct_level < i) destruct_level = i;
620#endif
621#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
622 /* RT #114496, for perl_free */
623 PL_perl_destruct_level = i;
36e77d41 624#endif
5f05dabc 625 }
4633a7c4
LW
626 }
627#endif
628
27da23d5 629 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
630 dJMPENV;
631 int x = 0;
632
633 JMPENV_PUSH(x);
1b6737cc 634 PERL_UNUSED_VAR(x);
9ebf26ad 635 if (PL_endav && !PL_minus_c) {
ca7b837b 636 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 637 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 638 }
f3faeb53 639 JMPENV_POP;
26f423df 640 }
f3faeb53 641 LEAVE;
a0d0e21e 642 FREETMPS;
3d22c4f0 643 assert(PL_scopestack_ix == 0);
a0d0e21e 644
e00b64d4 645 /* Need to flush since END blocks can produce output */
8abddda3
TC
646 /* flush stdout separately, since we can identify it */
647#ifdef USE_PERLIO
648 {
649 PerlIO *stdo = PerlIO_stdout();
650 if (*stdo && PerlIO_flush(stdo)) {
651 PerlIO_restore_errno(stdo);
675c73ca
MB
652 if (errno)
653 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
654 Strerror(errno));
8abddda3
TC
655 if (!STATUS_UNIX)
656 STATUS_ALL_FAILURE;
657 }
658 }
659#endif
f13a2bc0 660 my_fflush_all();
e00b64d4 661
75d476e2 662#ifdef PERL_TRACE_OPS
e71f25b3
JC
663 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
664 {
665 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
666 UV uv;
667
668 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
669 || !(uv > 0))
670 goto no_trace_out;
671 }
75d476e2
SM
672 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
673 for (i = 0; i <= OP_max; ++i) {
e71f25b3 674 if (PL_op_exec_cnt[i])
147e3846 675 PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM
676 }
677 /* Utility slot for easily doing little tracing experiments in the runloop: */
678 if (PL_op_exec_cnt[OP_max+1] != 0)
147e3846 679 PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]);
75d476e2 680 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 681 no_trace_out:
75d476e2
SM
682#endif
683
684
16c91539 685 if (PL_threadhook(aTHX)) {
62375a60 686 /* Threads hook has vetoed further cleanup */
c301d606 687 PL_veto_cleanup = TRUE;
37038d91 688 return STATUS_EXIT;
62375a60
NIS
689 }
690
2aa47728
NC
691#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
692 if (destruct_level != 0) {
693 /* Fork here to create a child. Our child's job is to preserve the
694 state of scalars prior to destruction, so that we can instruct it
695 to dump any scalars that we later find have leaked.
696 There's no subtlety in this code - it assumes POSIX, and it doesn't
697 fail gracefully */
698 int fd[2];
699
700 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
701 perror("Debug leaking scalars socketpair failed");
702 abort();
703 }
704
705 child = fork();
706 if(child == -1) {
707 perror("Debug leaking scalars fork failed");
708 abort();
709 }
710 if (!child) {
711 /* We are the child */
3125a5a4
NC
712 const int sock = fd[1];
713 const int debug_fd = PerlIO_fileno(Perl_debug_log);
714 int f;
808ad2d0
NC
715 const char *where;
716 /* Our success message is an integer 0, and a char 0 */
b61433a9 717 static const char success[sizeof(int) + 1] = {0};
3125a5a4 718
2aa47728 719 close(fd[0]);
2aa47728 720
3125a5a4
NC
721 /* We need to close all other file descriptors otherwise we end up
722 with interesting hangs, where the parent closes its end of a
723 pipe, and sits waiting for (another) child to terminate. Only
724 that child never terminates, because it never gets EOF, because
bf357333
NC
725 we also have the far end of the pipe open. We even need to
726 close the debugging fd, because sometimes it happens to be one
727 end of a pipe, and a process is waiting on the other end for
728 EOF. Normally it would be closed at some point earlier in
729 destruction, but if we happen to cause the pipe to remain open,
730 EOF never occurs, and we get an infinite hang. Hence all the
731 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
732
733 f = sysconf(_SC_OPEN_MAX);
734 if(f < 0) {
808ad2d0
NC
735 where = "sysconf failed";
736 goto abort;
3125a5a4
NC
737 }
738 while (f--) {
739 if (f == sock)
740 continue;
3125a5a4
NC
741 close(f);
742 }
743
2aa47728
NC
744 while (1) {
745 SV *target;
bf357333
NC
746 union control_un control;
747 struct msghdr msg;
748 struct iovec vec[1];
749 struct cmsghdr *cmptr;
750 ssize_t got;
751 int got_fd;
752
753 msg.msg_control = control.control;
754 msg.msg_controllen = sizeof(control.control);
755 /* We're a connected socket so we don't need a source */
756 msg.msg_name = NULL;
757 msg.msg_namelen = 0;
758 msg.msg_iov = vec;
c3caa5c3 759 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
760
761 vec[0].iov_base = (void*)&target;
762 vec[0].iov_len = sizeof(target);
763
764 got = recvmsg(sock, &msg, 0);
2aa47728
NC
765
766 if(got == 0)
767 break;
768 if(got < 0) {
808ad2d0
NC
769 where = "recv failed";
770 goto abort;
2aa47728
NC
771 }
772 if(got < sizeof(target)) {
808ad2d0
NC
773 where = "short recv";
774 goto abort;
2aa47728 775 }
bf357333 776
808ad2d0
NC
777 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
778 where = "no cmsg";
779 goto abort;
780 }
781 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
782 where = "wrong cmsg_len";
783 goto abort;
784 }
785 if(cmptr->cmsg_level != SOL_SOCKET) {
786 where = "wrong cmsg_level";
787 goto abort;
788 }
789 if(cmptr->cmsg_type != SCM_RIGHTS) {
790 where = "wrong cmsg_type";
791 goto abort;
792 }
bf357333
NC
793
794 got_fd = *(int*)CMSG_DATA(cmptr);
795 /* For our last little bit of trickery, put the file descriptor
796 back into Perl_debug_log, as if we never actually closed it
797 */
808ad2d0
NC
798 if(got_fd != debug_fd) {
799 if (dup2(got_fd, debug_fd) == -1) {
800 where = "dup2";
801 goto abort;
802 }
803 }
2aa47728 804 sv_dump(target);
bf357333 805
2aa47728
NC
806 PerlIO_flush(Perl_debug_log);
807
808ad2d0 808 got = write(sock, &success, sizeof(success));
2aa47728
NC
809
810 if(got < 0) {
808ad2d0
NC
811 where = "write failed";
812 goto abort;
2aa47728 813 }
808ad2d0
NC
814 if(got < sizeof(success)) {
815 where = "short write";
816 goto abort;
2aa47728
NC
817 }
818 }
819 _exit(0);
808ad2d0
NC
820 abort:
821 {
822 int send_errno = errno;
823 unsigned char length = (unsigned char) strlen(where);
824 struct iovec failure[3] = {
825 {(void*)&send_errno, sizeof(send_errno)},
826 {&length, 1},
827 {(void*)where, length}
828 };
829 int got = writev(sock, failure, 3);
830 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
831 in the parent if we try to read from the socketpair after the
832 child has exited, even if there was data to read.
833 So sleep a bit to give the parent a fighting chance of
834 reading the data. */
835 sleep(2);
836 _exit((got == -1) ? errno : 0);
837 }
bf357333 838 /* End of child. */
2aa47728 839 }
41e4abd8 840 PL_dumper_fd = fd[0];
2aa47728
NC
841 close(fd[1]);
842 }
843#endif
844
ff0cee69
PP
845 /* We must account for everything. */
846
847 /* Destroy the main CV and syntax tree */
37e77c23
FC
848 /* Set PL_curcop now, because destroying ops can cause new SVs
849 to be generated in Perl_pad_swipe, and when running with
850 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
851 op from which the filename structure member is copied. */
17fbfdf6 852 PL_curcop = &PL_compiling;
3280af22 853 if (PL_main_root) {
4e380990
DM
854 /* ensure comppad/curpad to refer to main's pad */
855 if (CvPADLIST(PL_main_cv)) {
856 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 857 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 858 }
3280af22 859 op_free(PL_main_root);
5f66b61c 860 PL_main_root = NULL;
a0d0e21e 861 }
5f66b61c 862 PL_main_start = NULL;
aac9d523
DM
863 /* note that PL_main_cv isn't usually actually freed at this point,
864 * due to the CvOUTSIDE refs from subs compiled within it. It will
865 * get freed once all the subs are freed in sv_clean_all(), for
866 * destruct_level > 0 */
3280af22 867 SvREFCNT_dec(PL_main_cv);
601f1833 868 PL_main_cv = NULL;
ca7b837b 869 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 870
13621cfb
NIS
871 /* Tell PerlIO we are about to tear things apart in case
872 we have layers which are using resources that should
873 be cleaned up now.
874 */
875
876 PerlIO_destruct(aTHX);
877
ddf23d4a
SM
878 /*
879 * Try to destruct global references. We do this first so that the
880 * destructors and destructees still exist. Some sv's might remain.
881 * Non-referenced objects are on their own.
882 */
883 sv_clean_objs();
8990e307 884
5cd24f17 885 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 886 SvREFCNT_dec(PL_warnhook);
a0714e2c 887 PL_warnhook = NULL;
3280af22 888 SvREFCNT_dec(PL_diehook);
a0714e2c 889 PL_diehook = NULL;
5cd24f17 890
4b556e6c 891 /* call exit list functions */
3280af22 892 while (PL_exitlistlen-- > 0)
acfe0abc 893 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 894
3280af22 895 Safefree(PL_exitlist);
4b556e6c 896
1c4916e5
CB
897 PL_exitlist = NULL;
898 PL_exitlistlen = 0;
899
a3e6e81e
NC
900 SvREFCNT_dec(PL_registered_mros);
901
551a8b83 902 /* jettison our possibly duplicated environment */
4b647fb0
DM
903 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
904 * so we certainly shouldn't free it here
905 */
2f42fcb0 906#ifndef PERL_MICRO
4b647fb0 907#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 908 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
909#ifdef USE_ITHREADS
910 /* only main thread can free environ[0] contents */
911 && PL_curinterp == aTHX
912#endif
913 )
914 {
551a8b83
JH
915 I32 i;
916
917 for (i = 0; environ[i]; i++)
4b420006 918 safesysfree(environ[i]);
0631ea03 919
4b420006
JH
920 /* Must use safesysfree() when working with environ. */
921 safesysfree(environ);
551a8b83
JH
922
923 environ = PL_origenviron;
924 }
925#endif
2f42fcb0 926#endif /* !PERL_MICRO */
551a8b83 927
30985c42
JH
928 if (destruct_level == 0) {
929
930 DEBUG_P(debprofdump());
931
932#if defined(PERLIO_LAYERS)
933 /* No more IO - including error messages ! */
934 PerlIO_cleanup(aTHX);
935#endif
936
937 CopFILE_free(&PL_compiling);
30985c42
JH
938
939 /* The exit() function will do everything that needs doing. */
940 return STATUS_EXIT;
941 }
942
9fa9f06b
KW
943 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
944
5f8cb046
DM
945#ifdef USE_ITHREADS
946 /* the syntax tree is shared between clones
947 * so op_free(PL_main_root) only ReREFCNT_dec's
948 * REGEXPs in the parent interpreter
949 * we need to manually ReREFCNT_dec for the clones
950 */
0547a729
DM
951 {
952 I32 i = AvFILLp(PL_regex_padav);
953 SV **ary = AvARRAY(PL_regex_padav);
954
955 for (; i; i--) {
956 SvREFCNT_dec(ary[i]);
957 ary[i] = &PL_sv_undef;
958 }
959 }
5f8cb046
DM
960#endif
961
0547a729 962
ad64d0ec 963 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
964 PL_stashcache = NULL;
965
5f05dabc
PP
966 /* loosen bonds of global variables */
967
2f9285f8
DM
968 /* XXX can PL_parser still be non-null here? */
969 if(PL_parser && PL_parser->rsfp) {
970 (void)PerlIO_close(PL_parser->rsfp);
971 PL_parser->rsfp = NULL;
8ebc5c01
PP
972 }
973
84386e14
RGS
974 if (PL_minus_F) {
975 Safefree(PL_splitstr);
976 PL_splitstr = NULL;
977 }
978
8ebc5c01 979 /* switches */
3280af22
NIS
980 PL_minus_n = FALSE;
981 PL_minus_p = FALSE;
982 PL_minus_l = FALSE;
983 PL_minus_a = FALSE;
984 PL_minus_F = FALSE;
985 PL_doswitches = FALSE;
599cee73 986 PL_dowarn = G_WARN_OFF;
1a904fc8 987#ifdef PERL_SAWAMPERSAND
d3b97530 988 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 989#endif
3280af22
NIS
990 PL_unsafe = FALSE;
991
992 Safefree(PL_inplace);
bd61b366 993 PL_inplace = NULL;
a7cb1f99 994 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
995
996 if (PL_e_script) {
997 SvREFCNT_dec(PL_e_script);
a0714e2c 998 PL_e_script = NULL;
8ebc5c01
PP
999 }
1000
bf9cdc68
RG
1001 PL_perldb = 0;
1002
8ebc5c01
PP
1003 /* magical thingies */
1004
e23d9e2f
CS
1005 SvREFCNT_dec(PL_ofsgv); /* *, */
1006 PL_ofsgv = NULL;
5f05dabc 1007
7889fe52 1008 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 1009 PL_ors_sv = NULL;
8ebc5c01 1010
3280af22 1011 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 1012 PL_rs = NULL;
dc92893f 1013
d33b2eba 1014 Safefree(PL_osname); /* $^O */
bd61b366 1015 PL_osname = NULL;
5f05dabc 1016
3280af22 1017 SvREFCNT_dec(PL_statname);
a0714e2c
SS
1018 PL_statname = NULL;
1019 PL_statgv = NULL;
5f05dabc 1020
8ebc5c01
PP
1021 /* defgv, aka *_ should be taken care of elsewhere */
1022
7d5ea4e7
GS
1023 /* float buffer */
1024 Safefree(PL_efloatbuf);
bd61b366 1025 PL_efloatbuf = NULL;
7d5ea4e7
GS
1026 PL_efloatsize = 0;
1027
8ebc5c01 1028 /* startup and shutdown function lists */
3280af22 1029 SvREFCNT_dec(PL_beginav);
5a837c8f 1030 SvREFCNT_dec(PL_beginav_save);
3280af22 1031 SvREFCNT_dec(PL_endav);
7d30b5c4 1032 SvREFCNT_dec(PL_checkav);
ece599bd 1033 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
1034 SvREFCNT_dec(PL_unitcheckav);
1035 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1036 SvREFCNT_dec(PL_initav);
7d49f689
NC
1037 PL_beginav = NULL;
1038 PL_beginav_save = NULL;
1039 PL_endav = NULL;
1040 PL_checkav = NULL;
1041 PL_checkav_save = NULL;
3c10abe3
AG
1042 PL_unitcheckav = NULL;
1043 PL_unitcheckav_save = NULL;
7d49f689 1044 PL_initav = NULL;
5618dfe8 1045
8ebc5c01 1046 /* shortcuts just get cleared */
a0714e2c
SS
1047 PL_hintgv = NULL;
1048 PL_errgv = NULL;
a0714e2c
SS
1049 PL_argvoutgv = NULL;
1050 PL_stdingv = NULL;
1051 PL_stderrgv = NULL;
1052 PL_last_in_gv = NULL;
a0714e2c
SS
1053 PL_DBsingle = NULL;
1054 PL_DBtrace = NULL;
1055 PL_DBsignal = NULL;
a6d69523
TC
1056 PL_DBsingle_iv = 0;
1057 PL_DBtrace_iv = 0;
1058 PL_DBsignal_iv = 0;
601f1833 1059 PL_DBcv = NULL;
7d49f689 1060 PL_dbargs = NULL;
5c284bb0 1061 PL_debstash = NULL;
8ebc5c01 1062
cf93a474 1063 SvREFCNT_dec(PL_envgv);
f03015cd 1064 SvREFCNT_dec(PL_incgv);
722fa0e9 1065 SvREFCNT_dec(PL_argvgv);
475b1e90 1066 SvREFCNT_dec(PL_replgv);
8cece913
FC
1067 SvREFCNT_dec(PL_DBgv);
1068 SvREFCNT_dec(PL_DBline);
1069 SvREFCNT_dec(PL_DBsub);
cf93a474 1070 PL_envgv = NULL;
f03015cd 1071 PL_incgv = NULL;
722fa0e9 1072 PL_argvgv = NULL;
475b1e90 1073 PL_replgv = NULL;
8cece913
FC
1074 PL_DBgv = NULL;
1075 PL_DBline = NULL;
1076 PL_DBsub = NULL;
1077
7a1c5554 1078 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1079 PL_argvout_stack = NULL;
8ebc5c01 1080
5c831c24 1081 SvREFCNT_dec(PL_modglobal);
5c284bb0 1082 PL_modglobal = NULL;
5c831c24 1083 SvREFCNT_dec(PL_preambleav);
7d49f689 1084 PL_preambleav = NULL;
5c831c24 1085 SvREFCNT_dec(PL_subname);
a0714e2c 1086 PL_subname = NULL;
ca0c25f6 1087#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1088 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1089 PL_pidstatus = NULL;
ca0c25f6 1090#endif
5c831c24 1091 SvREFCNT_dec(PL_toptarget);
a0714e2c 1092 PL_toptarget = NULL;
5c831c24 1093 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1094 PL_bodytarget = NULL;
1095 PL_formtarget = NULL;
5c831c24 1096
d33b2eba 1097 /* free locale stuff */
b9582b6a 1098#ifdef USE_LOCALE_COLLATE
d33b2eba 1099 Safefree(PL_collation_name);
bd61b366 1100 PL_collation_name = NULL;
b9582b6a 1101#endif
d33b2eba 1102
b9582b6a 1103#ifdef USE_LOCALE_NUMERIC
d33b2eba 1104 Safefree(PL_numeric_name);
bd61b366 1105 PL_numeric_name = NULL;
a453c169 1106 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1107 PL_numeric_radix_sv = NULL;
b9582b6a 1108#endif
d33b2eba 1109
9c0b6888
KW
1110 /* clear character classes */
1111 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1112 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1113 PL_utf8_swash_ptrs[i] = NULL;
1114 }
5c831c24
GS
1115 SvREFCNT_dec(PL_utf8_mark);
1116 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1117 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1118 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1119 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1120 SvREFCNT_dec(PL_utf8_idstart);
1121 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1122 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1123 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1124 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1125 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1126 SvREFCNT_dec(PL_UpperLatin1);
1127 SvREFCNT_dec(PL_Latin1);
1128 SvREFCNT_dec(PL_NonL1NonFinalFold);
1129 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1130#ifdef USE_LOCALE_CTYPE
780fcc9f 1131 SvREFCNT_dec(PL_warn_locale);
5b7de470 1132#endif
a0714e2c
SS
1133 PL_utf8_mark = NULL;
1134 PL_utf8_toupper = NULL;
1135 PL_utf8_totitle = NULL;
1136 PL_utf8_tolower = NULL;
1137 PL_utf8_tofold = NULL;
1138 PL_utf8_idstart = NULL;
1139 PL_utf8_idcont = NULL;
2726813d 1140 PL_utf8_foldclosures = NULL;
9fa9f06b 1141 PL_AboveLatin1 = NULL;
e0a1ff7a 1142 PL_InBitmap = NULL;
9fa9f06b 1143 PL_HasMultiCharFold = NULL;
5b7de470 1144#ifdef USE_LOCALE_CTYPE
780fcc9f 1145 PL_warn_locale = NULL;
5b7de470 1146#endif
9fa9f06b
KW
1147 PL_Latin1 = NULL;
1148 PL_NonL1NonFinalFold = NULL;
1149 PL_UpperLatin1 = NULL;
86f72d56 1150 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1151 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1152 PL_XPosix_ptrs[i] = NULL;
86f72d56 1153 }
64935bc6 1154 PL_GCB_invlist = NULL;
6b659339 1155 PL_LB_invlist = NULL;
06ae2722 1156 PL_SB_invlist = NULL;
ae3bb8ea 1157 PL_WB_invlist = NULL;
9e7ded3f 1158 PL_Assigned_invlist = NULL;
5c831c24 1159
971a9dd3 1160 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1161 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1162 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1163 cophh_free(CopHINTHASH_get(&PL_compiling));
1164 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1165 CopFILE_free(&PL_compiling);
5c831c24 1166
a0d0e21e 1167 /* Prepare to destruct main symbol table. */
5f05dabc 1168
3280af22 1169 hv = PL_defstash;
ca556bcd 1170 /* break ref loop *:: <=> %:: */
854da30f 1171 (void)hv_deletes(hv, "main::", G_DISCARD);
3280af22 1172 PL_defstash = 0;
a0d0e21e 1173 SvREFCNT_dec(hv);
5c831c24 1174 SvREFCNT_dec(PL_curstname);
a0714e2c 1175 PL_curstname = NULL;
a0d0e21e 1176
5a844595
GS
1177 /* clear queued errors */
1178 SvREFCNT_dec(PL_errors);
a0714e2c 1179 PL_errors = NULL;
5a844595 1180
dd69841b
BB
1181 SvREFCNT_dec(PL_isarev);
1182
a0d0e21e 1183 FREETMPS;
9b387841 1184 if (destruct_level >= 2) {
3280af22 1185 if (PL_scopestack_ix != 0)
9b387841
NC
1186 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1187 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1188 (long)PL_scopestack_ix);
3280af22 1189 if (PL_savestack_ix != 0)
9b387841
NC
1190 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1191 "Unbalanced saves: %ld more saves than restores\n",
1192 (long)PL_savestack_ix);
3280af22 1193 if (PL_tmps_floor != -1)
9b387841
NC
1194 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1195 (long)PL_tmps_floor + 1);
a0d0e21e 1196 if (cxstack_ix != -1)
9b387841
NC
1197 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1198 (long)cxstack_ix + 1);
a0d0e21e 1199 }
8990e307 1200
0547a729
DM
1201#ifdef USE_ITHREADS
1202 SvREFCNT_dec(PL_regex_padav);
1203 PL_regex_padav = NULL;
1204 PL_regex_pad = NULL;
1205#endif
1206
776df701 1207#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1208 /* the entries in this list are allocated via SV PVX's, so get freed
1209 * in sv_clean_all */
1210 Safefree(PL_my_cxt_list);
776df701 1211#endif
57bb2458 1212
8990e307 1213 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1214
1215 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1216 while (sv_clean_all() > 2)
5226ed68
JH
1217 ;
1218
23083432
FC
1219#ifdef USE_ITHREADS
1220 Safefree(PL_stashpad); /* must come after sv_clean_all */
1221#endif
1222
d4777f27
GS
1223 AvREAL_off(PL_fdpid); /* no surviving entries */
1224 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1225 PL_fdpid = NULL;
d33b2eba 1226
6c644e78
GS
1227#ifdef HAVE_INTERP_INTERN
1228 sys_intern_clear();
1229#endif
1230
a38ab475
RZ
1231 /* constant strings */
1232 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1233 SvREFCNT_dec(PL_sv_consts[i]);
1234 PL_sv_consts[i] = NULL;
1235 }
1236
6e72f9df
PP
1237 /* Destruct the global string table. */
1238 {
1239 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1240 * so that sv_free() won't fail on them.
80459961
NC
1241 * Now that the global string table is using a single hunk of memory
1242 * for both HE and HEK, we either need to explicitly unshare it the
1243 * correct way, or actually free things here.
6e72f9df 1244 */
80459961
NC
1245 I32 riter = 0;
1246 const I32 max = HvMAX(PL_strtab);
c4420975 1247 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1248 HE *hent = array[0];
1249
6e72f9df 1250 for (;;) {
0453d815 1251 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1252 HE * const next = HeNEXT(hent);
9014280d 1253 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1254 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1255 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1256 Safefree(hent);
1257 hent = next;
6e72f9df
PP
1258 }
1259 if (!hent) {
1260 if (++riter > max)
1261 break;
1262 hent = array[riter];
1263 }
1264 }
80459961
NC
1265
1266 Safefree(array);
1267 HvARRAY(PL_strtab) = 0;
1268 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1269 }
3280af22 1270 SvREFCNT_dec(PL_strtab);
6e72f9df 1271
e652bb2f 1272#ifdef USE_ITHREADS
c21d1a0f 1273 /* free the pointer tables used for cloning */
a0739874 1274 ptr_table_free(PL_ptr_table);
bf9cdc68 1275 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1276#endif
a0739874 1277
d33b2eba
GS
1278 /* free special SVs */
1279
1280 SvREFCNT(&PL_sv_yes) = 0;
1281 sv_clear(&PL_sv_yes);
1282 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1283 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1284
1285 SvREFCNT(&PL_sv_no) = 0;
1286 sv_clear(&PL_sv_no);
1287 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1288 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1289
5a6c2837
DM
1290 SvREFCNT(&PL_sv_zero) = 0;
1291 sv_clear(&PL_sv_zero);
1292 SvANY(&PL_sv_zero) = NULL;
1293 SvFLAGS(&PL_sv_zero) = 0;
1294
9f375a43
DM
1295 {
1296 int i;
1297 for (i=0; i<=2; i++) {
1298 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1299 sv_clear(PERL_DEBUG_PAD(i));
1300 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1301 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1302 }
1303 }
1304
0453d815 1305 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1306 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1307
eba0f806
DM
1308#ifdef DEBUG_LEAKING_SCALARS
1309 if (PL_sv_count != 0) {
1310 SV* sva;
1311 SV* sv;
eb578fdb 1312 SV* svend;
eba0f806 1313
ad64d0ec 1314 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1315 svend = &sva[SvREFCNT(sva)];
1316 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1317 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1318 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1319 " flags=0x%"UVxf
fd0854ff 1320 " refcnt=%"UVuf pTHX__FORMAT "\n"
147e3846
KW
1321 "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");"
1322 "serial %" UVuf "\n",
574b8821
NC
1323 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1324 pTHX__VALUE,
fd0854ff
DM
1325 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1326 sv->sv_debug_line,
1327 sv->sv_debug_inpad ? "for" : "by",
1328 sv->sv_debug_optype ?
1329 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1330 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1331 sv->sv_debug_serial
fd0854ff 1332 );
2aa47728 1333#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1334 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1335#endif
eba0f806
DM
1336 }
1337 }
1338 }
1339 }
2aa47728
NC
1340#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1341 {
1342 int status;
1343 fd_set rset;
1344 /* Wait for up to 4 seconds for child to terminate.
1345 This seems to be the least effort way of timing out on reaping
1346 its exit status. */
1347 struct timeval waitfor = {4, 0};
41e4abd8 1348 int sock = PL_dumper_fd;
2aa47728
NC
1349
1350 shutdown(sock, 1);
1351 FD_ZERO(&rset);
1352 FD_SET(sock, &rset);
1353 select(sock + 1, &rset, NULL, NULL, &waitfor);
1354 waitpid(child, &status, WNOHANG);
1355 close(sock);
1356 }
1357#endif
eba0f806 1358#endif
77abb4c6
NC
1359#ifdef DEBUG_LEAKING_SCALARS_ABORT
1360 if (PL_sv_count)
1361 abort();
1362#endif
bf9cdc68 1363 PL_sv_count = 0;
eba0f806 1364
56a2bab7 1365#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1366 /* No more IO - including error messages ! */
1367 PerlIO_cleanup(aTHX);
1368#endif
1369
9f4bd222 1370 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1371 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1372 for no arg - and will try and SvREFCNT_dec it.
1373 */
1374 SvREFCNT(&PL_sv_undef) = 0;
1375 SvREADONLY_off(&PL_sv_undef);
1376
3280af22 1377 Safefree(PL_origfilename);
bd61b366 1378 PL_origfilename = NULL;
43c5f42d 1379 Safefree(PL_reg_curpm);
dd28f7bb 1380 free_tied_hv_pool();
3280af22 1381 Safefree(PL_op_mask);
cf36064f 1382 Safefree(PL_psig_name);
bf9cdc68 1383 PL_psig_name = (SV**)NULL;
d525a7b2 1384 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1385 {
1386 /* We need to NULL PL_psig_pend first, so that
1387 signal handlers know not to use it */
1388 int *psig_save = PL_psig_pend;
1389 PL_psig_pend = (int*)NULL;
1390 Safefree(psig_save);
1391 }
6e72f9df 1392 nuke_stacks();
284167a5
SM
1393 TAINTING_set(FALSE);
1394 TAINT_WARN_set(FALSE);
3280af22 1395 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1396
a0d0e21e 1397 DEBUG_P(debprofdump());
d33b2eba 1398
b173165c
FC
1399 PL_debug = 0;
1400
e5dd39fc 1401#ifdef USE_REENTRANT_API
10bc17b6 1402 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1403#endif
1404
a24da70b
NC
1405 /* These all point to HVs that are about to be blown away.
1406 Code in core and on CPAN assumes that if the interpreter is re-started
1407 that they will be cleanly NULL or pointing to a valid HV. */
1408 PL_custom_op_names = NULL;
1409 PL_custom_op_descs = NULL;
1410 PL_custom_ops = NULL;
1411
612f20c3
GS
1412 sv_free_arenas();
1413
5d9a96ca
DM
1414 while (PL_regmatch_slab) {
1415 regmatch_slab *s = PL_regmatch_slab;
1416 PL_regmatch_slab = PL_regmatch_slab->next;
1417 Safefree(s);
1418 }
1419
fc36a67e
PP
1420 /* As the absolutely last thing, free the non-arena SV for mess() */
1421
3280af22 1422 if (PL_mess_sv) {
f350b448
NC
1423 /* we know that type == SVt_PVMG */
1424
9c63abab 1425 /* it could have accumulated taint magic */
f350b448
NC
1426 MAGIC* mg;
1427 MAGIC* moremagic;
1428 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1429 moremagic = mg->mg_moremagic;
1430 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1431 && mg->mg_len >= 0)
1432 Safefree(mg->mg_ptr);
1433 Safefree(mg);
9c63abab 1434 }
f350b448 1435
fc36a67e 1436 /* we know that type >= SVt_PV */
8bd4d4c5 1437 SvPV_free(PL_mess_sv);
3280af22
NIS
1438 Safefree(SvANY(PL_mess_sv));
1439 Safefree(PL_mess_sv);
a0714e2c 1440 PL_mess_sv = NULL;
fc36a67e 1441 }
37038d91 1442 return STATUS_EXIT;
79072805
LW
1443}
1444
954c1994
GS
1445/*
1446=for apidoc perl_free
1447
1448Releases a Perl interpreter. See L<perlembed>.
1449
1450=cut
1451*/
1452
79072805 1453void
0cb96387 1454perl_free(pTHXx)
79072805 1455{
5174512c
NC
1456 dVAR;
1457
7918f24d
NC
1458 PERL_ARGS_ASSERT_PERL_FREE;
1459
c301d606
DM
1460 if (PL_veto_cleanup)
1461 return;
1462
7cb608b5 1463#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1464 {
1465 /*
1466 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1467 * value as we're probably hunting memory leaks then
1468 */
36e77d41 1469 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1470 const U32 old_debug = PL_debug;
55ef9aae
MHM
1471 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1472 thread at thread exit. */
4fd0a9b8
NC
1473 if (DEBUG_m_TEST) {
1474 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1475 "free this thread's memory\n");
1476 PL_debug &= ~ DEBUG_m_FLAG;
1477 }
6edcbed6
DD
1478 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1479 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1480 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1481 safesysfree(ptr);
1482 }
4fd0a9b8 1483 PL_debug = old_debug;
55ef9aae
MHM
1484 }
1485 }
7cb608b5
NC
1486#endif
1487
acfe0abc 1488#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1489# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1490 {
acfe0abc 1491# ifdef NETWARE
7af12a34 1492 void *host = nw_internal_host;
7af12a34 1493 PerlMem_free(aTHXx);
7af12a34 1494 nw_delete_internal_host(host);
acfe0abc 1495# else
bdb50480
NC
1496 void *host = w32_internal_host;
1497 PerlMem_free(aTHXx);
7af12a34 1498 win32_delete_internal_host(host);
acfe0abc 1499# endif
7af12a34 1500 }
1c0ca838
GS
1501# else
1502 PerlMem_free(aTHXx);
1503# endif
acfe0abc
GS
1504#else
1505 PerlMem_free(aTHXx);
76e3520e 1506#endif
79072805
LW
1507}
1508
b7f7fff6 1509#if defined(USE_ITHREADS)
aebd1ac7
GA
1510/* provide destructors to clean up the thread key when libperl is unloaded */
1511#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1512
826955bd 1513#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1514#pragma fini "perl_fini"
666ad1ec
GA
1515#elif defined(__sun) && !defined(__GNUC__)
1516#pragma fini (perl_fini)
aebd1ac7
GA
1517#endif
1518
0dbb1585
AL
1519static void
1520#if defined(__GNUC__)
1521__attribute__((destructor))
aebd1ac7 1522#endif
de009b76 1523perl_fini(void)
aebd1ac7 1524{
27da23d5 1525 dVAR;
5c64bffd
NC
1526 if (
1527#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1528 my_vars &&
1529#endif
1530 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1531 FREE_THREAD_KEY;
1532}
1533
1534#endif /* WIN32 */
1535#endif /* THREADS */
1536
4b556e6c 1537void
864dbfa3 1538Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1539{
3280af22
NIS
1540 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1541 PL_exitlist[PL_exitlistlen].fn = fn;
1542 PL_exitlist[PL_exitlistlen].ptr = ptr;
1543 ++PL_exitlistlen;
4b556e6c
JD
1544}
1545
954c1994
GS
1546/*
1547=for apidoc perl_parse
1548
1549Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1550
1551=cut
1552*/
1553
03d9f026
FC
1554#define SET_CURSTASH(newstash) \
1555 if (PL_curstash != newstash) { \
1556 SvREFCNT_dec(PL_curstash); \
1557 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1558 }
1559
79072805 1560int
0cb96387 1561perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1562{
27da23d5 1563 dVAR;
6224f72b 1564 I32 oldscope;
6224f72b 1565 int ret;
db36c5a1 1566 dJMPENV;
8d063cd8 1567
7918f24d
NC
1568 PERL_ARGS_ASSERT_PERL_PARSE;
1569#ifndef MULTIPLICITY
ed6c66dd 1570 PERL_UNUSED_ARG(my_perl);
7918f24d 1571#endif
1a237f4f 1572#if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG)
b0891165 1573 {
7dc86639
YO
1574 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1575
22ff3130 1576 if (s && strEQ(s, "1")) {
25c1b134
TC
1577 const unsigned char *seed= PERL_HASH_SEED;
1578 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1579 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1580 while (seed < seed_end) {
1581 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1582 }
6a5b4183
YO
1583#ifdef PERL_HASH_RANDOMIZE_KEYS
1584 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1585 PL_HASH_RAND_BITS_ENABLED,
1586 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1587#endif
7dc86639
YO
1588 PerlIO_printf(Perl_debug_log, "\n");
1589 }
b0891165 1590 }
1a237f4f 1591#endif /* #if (defined(USE_HASH_SEED) ... */
43238333 1592
ea34f6bd 1593#ifdef __amigaos4__
43238333
AB
1594 {
1595 struct NameTranslationInfo nti;
1596 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1597 }
1598#endif
1599
3280af22 1600 PL_origargc = argc;
e2975953 1601 PL_origargv = argv;
a0d0e21e 1602
a2722ac9
GA
1603 if (PL_origalen != 0) {
1604 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1605 }
1606 else {
3cb9023d
JH
1607 /* Set PL_origalen be the sum of the contiguous argv[]
1608 * elements plus the size of the env in case that it is
e9137a8e 1609 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1610 * as the maximum modifiable length of $0. In the worst case
1611 * the area we are able to modify is limited to the size of
43c32782 1612 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1613 * --jhi */
e1ec3a88 1614 const char *s = NULL;
b7249aaf 1615 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1616 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1617 const UV aligned =
43c32782
JH
1618 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1619
1620 /* See if all the arguments are contiguous in memory. Note
1621 * that 'contiguous' is a loose term because some platforms
1622 * align the argv[] and the envp[]. If the arguments look
1623 * like non-aligned, assume that they are 'strictly' or
1624 * 'traditionally' contiguous. If the arguments look like
1625 * aligned, we just check that they are within aligned
1626 * PTRSIZE bytes. As long as no system has something bizarre
1627 * like the argv[] interleaved with some other data, we are
1628 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb 1629 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
19742f39 1630 int i;
c8941eeb
JH
1631 while (*s) s++;
1632 for (i = 1; i < PL_origargc; i++) {
1633 if ((PL_origargv[i] == s + 1
43c32782 1634#ifdef OS2
c8941eeb 1635 || PL_origargv[i] == s + 2
43c32782 1636#endif
c8941eeb
JH
1637 )
1638 ||
1639 (aligned &&
1640 (PL_origargv[i] > s &&
1641 PL_origargv[i] <=
1642 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1643 )
1644 {
1645 s = PL_origargv[i];
1646 while (*s) s++;
1647 }
1648 else
1649 break;
54bfe034 1650 }
54bfe034 1651 }
a4a109c2
JD
1652
1653#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1654 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1655 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1656 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1657 ||
1658 (aligned &&
1659 (PL_origenviron[0] > s &&
1660 PL_origenviron[0] <=
1661 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1662 )
1663 {
19742f39 1664 int i;
9d419b5f 1665#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1666 s = PL_origenviron[0];
1667 while (*s) s++;
1668#endif
bd61b366 1669 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1670 /* Force copy of environment. */
1671 for (i = 1; PL_origenviron[i]; i++) {
1672 if (PL_origenviron[i] == s + 1
1673 ||
1674 (aligned &&
1675 (PL_origenviron[i] > s &&
1676 PL_origenviron[i] <=
1677 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1678 )
1679 {
1680 s = PL_origenviron[i];
1681 while (*s) s++;
1682 }
1683 else
1684 break;
54bfe034 1685 }
43c32782 1686 }
54bfe034 1687 }
a4a109c2
JD
1688#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1689
2d2af554 1690 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1691 }
1692
3280af22 1693 if (PL_do_undump) {
a0d0e21e
LW
1694
1695 /* Come here if running an undumped a.out. */
1696
3280af22
NIS
1697 PL_origfilename = savepv(argv[0]);
1698 PL_do_undump = FALSE;
a0d0e21e 1699 cxstack_ix = -1; /* start label stack again */
748a9306 1700 init_ids();
284167a5 1701 assert (!TAINT_get);
b7975bdd 1702 TAINT;
e2051532 1703 set_caret_X();
b7975bdd 1704 TAINT_NOT;
a0d0e21e
LW
1705 init_postdump_symbols(argc,argv,env);
1706 return 0;
1707 }
1708
3280af22 1709 if (PL_main_root) {
3280af22 1710 op_free(PL_main_root);
5f66b61c 1711 PL_main_root = NULL;
ff0cee69 1712 }
5f66b61c 1713 PL_main_start = NULL;
3280af22 1714 SvREFCNT_dec(PL_main_cv);
601f1833 1715 PL_main_cv = NULL;
79072805 1716
3280af22
NIS
1717 time(&PL_basetime);
1718 oldscope = PL_scopestack_ix;
599cee73 1719 PL_dowarn = G_WARN_OFF;
f86702cc 1720
14dd3ad8 1721 JMPENV_PUSH(ret);
6224f72b 1722 switch (ret) {
312caa8e 1723 case 0:
14dd3ad8 1724 parse_body(env,xsinit);
9ebf26ad 1725 if (PL_unitcheckav) {
3c10abe3 1726 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1727 }
1728 if (PL_checkav) {
ca7b837b 1729 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1730 call_list(oldscope, PL_checkav);
9ebf26ad 1731 }
14dd3ad8
GS
1732 ret = 0;
1733 break;
6224f72b
GS
1734 case 1:
1735 STATUS_ALL_FAILURE;
924ba076 1736 /* FALLTHROUGH */
6224f72b
GS
1737 case 2:
1738 /* my_exit() was called */
3280af22 1739 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1740 LEAVE;
1741 FREETMPS;
03d9f026 1742 SET_CURSTASH(PL_defstash);
9ebf26ad 1743 if (PL_unitcheckav) {
3c10abe3 1744 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1745 }
1746 if (PL_checkav) {
ca7b837b 1747 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1748 call_list(oldscope, PL_checkav);
9ebf26ad 1749 }
37038d91 1750 ret = STATUS_EXIT;
14dd3ad8 1751 break;
6224f72b 1752 case 3:
bf49b057 1753 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1754 ret = 1;
1755 break;
6224f72b 1756 }
14dd3ad8
GS
1757 JMPENV_POP;
1758 return ret;
1759}
1760
4a5df386
NC
1761/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1762 miniperl, and we need to see those flags reflected in the values here. */
1763
1764/* What this returns is subject to change. Use the public interface in Config.
1765 */
1766static void
1767S_Internals_V(pTHX_ CV *cv)
1768{
1769 dXSARGS;
1770#ifdef LOCAL_PATCH_COUNT
1771 const int local_patch_count = LOCAL_PATCH_COUNT;
1772#else
1773 const int local_patch_count = 0;
1774#endif
2dc296d2 1775 const int entries = 3 + local_patch_count;
4a5df386 1776 int i;
fe1c5936 1777 static const char non_bincompat_options[] =
4a5df386
NC
1778# ifdef DEBUGGING
1779 " DEBUGGING"
1780# endif
1781# ifdef NO_MATHOMS
0d311fbe 1782 " NO_MATHOMS"
4a5df386 1783# endif
59b86f4b
DM
1784# ifdef NO_HASH_SEED
1785 " NO_HASH_SEED"
1786# endif
3b0e4ee2
MB
1787# ifdef NO_TAINT_SUPPORT
1788 " NO_TAINT_SUPPORT"
1789# endif
cb26ef7a
MB
1790# ifdef PERL_BOOL_AS_CHAR
1791 " PERL_BOOL_AS_CHAR"
1792# endif
93c10d60
FC
1793# ifdef PERL_COPY_ON_WRITE
1794 " PERL_COPY_ON_WRITE"
1795# endif
4a5df386
NC
1796# ifdef PERL_DISABLE_PMC
1797 " PERL_DISABLE_PMC"
1798# endif
1799# ifdef PERL_DONT_CREATE_GVSV
1800 " PERL_DONT_CREATE_GVSV"
1801# endif
9a044a43
NC
1802# ifdef PERL_EXTERNAL_GLOB
1803 " PERL_EXTERNAL_GLOB"
1804# endif
59b86f4b
DM
1805# ifdef PERL_HASH_FUNC_SIPHASH
1806 " PERL_HASH_FUNC_SIPHASH"
1807# endif
1808# ifdef PERL_HASH_FUNC_SDBM
1809 " PERL_HASH_FUNC_SDBM"
1810# endif
1811# ifdef PERL_HASH_FUNC_DJB2
1812 " PERL_HASH_FUNC_DJB2"
1813# endif
1814# ifdef PERL_HASH_FUNC_SUPERFAST
1815 " PERL_HASH_FUNC_SUPERFAST"
1816# endif
1817# ifdef PERL_HASH_FUNC_MURMUR3
1818 " PERL_HASH_FUNC_MURMUR3"
1819# endif
1820# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1821 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1822# endif
1823# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1824 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1825# endif
1826# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1827 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1828# endif
4a5df386
NC
1829# ifdef PERL_IS_MINIPERL
1830 " PERL_IS_MINIPERL"
1831# endif
1832# ifdef PERL_MALLOC_WRAP
1833 " PERL_MALLOC_WRAP"
1834# endif
1835# ifdef PERL_MEM_LOG
1836 " PERL_MEM_LOG"
1837# endif
1838# ifdef PERL_MEM_LOG_NOIMPL
1839 " PERL_MEM_LOG_NOIMPL"
1840# endif
4e499636
DM
1841# ifdef PERL_OP_PARENT
1842 " PERL_OP_PARENT"
1843# endif
59b86f4b
DM
1844# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1845 " PERL_PERTURB_KEYS_DETERMINISTIC"
1846# endif
1847# ifdef PERL_PERTURB_KEYS_DISABLED
1848 " PERL_PERTURB_KEYS_DISABLED"
1849# endif
1850# ifdef PERL_PERTURB_KEYS_RANDOM
1851 " PERL_PERTURB_KEYS_RANDOM"
1852# endif
c3cf41ec
NC
1853# ifdef PERL_PRESERVE_IVUV
1854 " PERL_PRESERVE_IVUV"
1855# endif
c051e30b
NC
1856# ifdef PERL_RELOCATABLE_INCPUSH
1857 " PERL_RELOCATABLE_INCPUSH"
1858# endif
4a5df386
NC
1859# ifdef PERL_USE_DEVEL
1860 " PERL_USE_DEVEL"
1861# endif
1862# ifdef PERL_USE_SAFE_PUTENV
1863 " PERL_USE_SAFE_PUTENV"
1864# endif
102b7877
YO
1865# ifdef SILENT_NO_TAINT_SUPPORT
1866 " SILENT_NO_TAINT_SUPPORT"
1867# endif
a3749cf3
NC
1868# ifdef UNLINK_ALL_VERSIONS
1869 " UNLINK_ALL_VERSIONS"
1870# endif
de618ee4
NC
1871# ifdef USE_ATTRIBUTES_FOR_PERLIO
1872 " USE_ATTRIBUTES_FOR_PERLIO"
1873# endif
4a5df386
NC
1874# ifdef USE_FAST_STDIO
1875 " USE_FAST_STDIO"
1876# endif
98548bdf
NC
1877# ifdef USE_LOCALE
1878 " USE_LOCALE"
1879# endif
98548bdf
NC
1880# ifdef USE_LOCALE_CTYPE
1881 " USE_LOCALE_CTYPE"
1882# endif
6937817d
DD
1883# ifdef WIN32_NO_REGISTRY
1884 " USE_NO_REGISTRY"
1885# endif
5a8d8935
NC
1886# ifdef USE_PERL_ATOF
1887 " USE_PERL_ATOF"
1888# endif
0d311fbe
NC
1889# ifdef USE_SITECUSTOMIZE
1890 " USE_SITECUSTOMIZE"
1891# endif
4a5df386
NC
1892 ;
1893 PERL_UNUSED_ARG(cv);
d3db1514 1894 PERL_UNUSED_VAR(items);
4a5df386
NC
1895
1896 EXTEND(SP, entries);
1897
1898 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1899 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1900 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1901
6baa8dbd
NT
1902#ifndef PERL_BUILD_DATE
1903# ifdef __DATE__
1904# ifdef __TIME__
1905# define PERL_BUILD_DATE __DATE__ " " __TIME__
1906# else
1907# define PERL_BUILD_DATE __DATE__
1908# endif
1909# endif
1910#endif
1911
1912#ifdef PERL_BUILD_DATE
4a5df386 1913 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1914 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1915 SVs_TEMP));
4a5df386
NC
1916#else
1917 PUSHs(&PL_sv_undef);
1918#endif
1919
4a5df386
NC
1920 for (i = 1; i <= local_patch_count; i++) {
1921 /* This will be an undef, if PL_localpatches[i] is NULL. */
1922 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1923 }
1924
1925 XSRETURN(entries);
1926}
1927
be71fc8f
NC
1928#define INCPUSH_UNSHIFT 0x01
1929#define INCPUSH_ADD_OLD_VERS 0x02
1930#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1931#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1932#define INCPUSH_NOT_BASEDIR 0x10
1933#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1934#define INCPUSH_ADD_SUB_DIRS \
1935 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1936
312caa8e 1937STATIC void *
14dd3ad8 1938S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1939{
27da23d5 1940 dVAR;
2f9285f8 1941 PerlIO *rsfp;
312caa8e 1942 int argc = PL_origargc;
8f42b153 1943 char **argv = PL_origargv;
e1ec3a88 1944 const char *scriptname = NULL;
402582ca 1945 bool dosearch = FALSE;
eb578fdb 1946 char c;
737c24fc 1947 bool doextract = FALSE;
bd61b366 1948 const char *cddir = NULL;
ab019eaa 1949#ifdef USE_SITECUSTOMIZE
20ef40cf 1950 bool minus_f = FALSE;
ab019eaa 1951#endif
95670bde 1952 SV *linestr_sv = NULL;
5486870f 1953 bool add_read_e_script = FALSE;
87606032 1954 U32 lex_start_flags = 0;
009d90df 1955
ca7b837b 1956 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1957
6224f72b 1958 init_main_stash();
54310121 1959
c7030b81
NC
1960 {
1961 const char *s;
6224f72b
GS
1962 for (argc--,argv++; argc > 0; argc--,argv++) {
1963 if (argv[0][0] != '-' || !argv[0][1])
1964 break;
6224f72b
GS
1965 s = argv[0]+1;
1966 reswitch:
47f56822 1967 switch ((c = *s)) {
729a02f2 1968 case 'C':
1d5472a9
GS
1969#ifndef PERL_STRICT_CR
1970 case '\r':
1971#endif
6224f72b
GS
1972 case ' ':
1973 case '0':
1974 case 'F':
1975 case 'a':
1976 case 'c':
1977 case 'd':
1978 case 'D':
1979 case 'h':
1980 case 'i':
1981 case 'l':
1982 case 'M':
1983 case 'm':
1984 case 'n':
1985 case 'p':
1986 case 's':
1987 case 'u':
1988 case 'U':
1989 case 'v':
599cee73
PM
1990 case 'W':
1991 case 'X':
6224f72b 1992 case 'w':
97bd5664 1993 if ((s = moreswitches(s)))
6224f72b
GS
1994 goto reswitch;
1995 break;
33b78306 1996
1dbad523 1997 case 't':
dc6d7f5c 1998#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1999 /* silently ignore */
dc6d7f5c 2000#elif defined(NO_TAINT_SUPPORT)
3231f579 2001 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2002 "Cowardly refusing to run with -t or -T flags");
2003#else
22f7c9c9 2004 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
2005 if( !TAINTING_get ) {
2006 TAINT_WARN_set(TRUE);
2007 TAINTING_set(TRUE);
317ea90d 2008 }
284167a5 2009#endif
317ea90d
MS
2010 s++;
2011 goto reswitch;
6224f72b 2012 case 'T':
dc6d7f5c 2013#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2014 /* silently ignore */
dc6d7f5c 2015#elif defined(NO_TAINT_SUPPORT)
3231f579 2016 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2017 "Cowardly refusing to run with -t or -T flags");
2018#else
22f7c9c9 2019 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2020 TAINTING_set(TRUE);
2021 TAINT_WARN_set(FALSE);
2022#endif
6224f72b
GS
2023 s++;
2024 goto reswitch;
f86702cc 2025
bc9b29db
RH
2026 case 'E':
2027 PL_minus_E = TRUE;
924ba076 2028 /* FALLTHROUGH */
6224f72b 2029 case 'e':
f20b2998 2030 forbid_setid('e', FALSE);
3280af22 2031 if (!PL_e_script) {
396482e1 2032 PL_e_script = newSVpvs("");
5486870f 2033 add_read_e_script = TRUE;
6224f72b
GS
2034 }
2035 if (*++s)
3280af22 2036 sv_catpv(PL_e_script, s);
6224f72b 2037 else if (argv[1]) {
3280af22 2038 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
2039 argc--,argv++;
2040 }
2041 else
47f56822 2042 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2043 sv_catpvs(PL_e_script, "\n");
6224f72b 2044 break;
afe37c7d 2045
20ef40cf 2046 case 'f':
f5542d3a 2047#ifdef USE_SITECUSTOMIZE
20ef40cf 2048 minus_f = TRUE;
f5542d3a 2049#endif
20ef40cf
GA
2050 s++;
2051 goto reswitch;
2052
6224f72b 2053 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2054 forbid_setid('I', FALSE);
bd61b366 2055 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
2056 argc--,argv++;
2057 }
6224f72b 2058 if (s && *s) {
0df16ed7 2059 STRLEN len = strlen(s);
55b4bc1c 2060 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
2061 }
2062 else
a67e862a 2063 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2064 break;
6224f72b 2065 case 'S':
f20b2998 2066 forbid_setid('S', FALSE);
6224f72b
GS
2067 dosearch = TRUE;
2068 s++;
2069 goto reswitch;
2070 case 'V':
7edfd0ef
NC
2071 {
2072 SV *opts_prog;
2073
7edfd0ef 2074 if (*++s != ':') {
37ca4a5b 2075 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2076 }
2077 else {
2078 ++s;
2079 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2080 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2081 0, s, 0);
2082 s += strlen(s);
2083 }
37ca4a5b 2084 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2085 /* don't look for script or read stdin */
2086 scriptname = BIT_BUCKET;
2087 goto reswitch;
6224f72b 2088 }
6224f72b 2089 case 'x':
737c24fc 2090 doextract = TRUE;
6224f72b 2091 s++;
304334da 2092 if (*s)
f4c556ac 2093 cddir = s;
6224f72b
GS
2094 break;
2095 case 0:
2096 break;
2097 case '-':
2098 if (!*++s || isSPACE(*s)) {
2099 argc--,argv++;
2100 goto switch_end;
2101 }
ee8bc8b7
NC
2102 /* catch use of gnu style long options.
2103 Both of these exit immediately. */
2104 if (strEQ(s, "version"))
2105 minus_v();
2106 if (strEQ(s, "help"))
2107 usage();
6224f72b 2108 s--;
924ba076 2109 /* FALLTHROUGH */
6224f72b 2110 default:
cea2e8a9 2111 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2112 }
2113 }
c7030b81
NC
2114 }
2115
6224f72b 2116 switch_end:
54310121 2117
c7030b81
NC
2118 {
2119 char *s;
2120
f675dbe5
CB
2121 if (
2122#ifndef SECURE_INTERNAL_GETENV
284167a5 2123 !TAINTING_get &&
f675dbe5 2124#endif
cf756827 2125 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2126 {
9e0b0d62
KW
2127 /* s points to static memory in getenv(), which may be overwritten at
2128 * any time; use a mortal copy instead */
2129 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2130
74288ac8
GS
2131 while (isSPACE(*s))
2132 s++;
317ea90d 2133 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2134#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2135 /* silently ignore */
dc6d7f5c 2136#elif defined(NO_TAINT_SUPPORT)
3231f579 2137 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2138 "Cowardly refusing to run with -t or -T flags");
2139#else
22f7c9c9 2140 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2141 TAINTING_set(TRUE);
2142 TAINT_WARN_set(FALSE);
2143#endif
317ea90d 2144 }
74288ac8 2145 else {
bd61b366 2146 char *popt_copy = NULL;
74288ac8 2147 while (s && *s) {
54913509 2148 const char *d;
74288ac8
GS
2149 while (isSPACE(*s))
2150 s++;
2151 if (*s == '-') {
2152 s++;
2153 if (isSPACE(*s))
2154 continue;
2155 }
4ea8f8fb 2156 d = s;
74288ac8
GS
2157 if (!*s)
2158 break;
2b622f1a 2159 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2160 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2161 while (++s && *s) {
2162 if (isSPACE(*s)) {
cf756827 2163 if (!popt_copy) {
bfa6c418
NC
2164 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2165 s = popt_copy + (s - d);
2166 d = popt_copy;
cf756827 2167 }
4ea8f8fb
MS
2168 *s++ = '\0';
2169 break;
2170 }
2171 }
1c4db469 2172 if (*d == 't') {
dc6d7f5c 2173#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2174 /* silently ignore */
dc6d7f5c 2175#elif defined(NO_TAINT_SUPPORT)
3231f579 2176 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2177 "Cowardly refusing to run with -t or -T flags");
2178#else
2179 if( !TAINTING_get) {
2180 TAINT_WARN_set(TRUE);
2181 TAINTING_set(TRUE);
317ea90d 2182 }
284167a5 2183#endif
1c4db469 2184 } else {
97bd5664 2185 moreswitches(d);
1c4db469 2186 }
6224f72b 2187 }
6224f72b
GS
2188 }
2189 }
c7030b81 2190 }
a0d0e21e 2191
c29067d7
CH
2192 /* Set $^X early so that it can be used for relocatable paths in @INC */
2193 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2194 assert (!TAINT_get);
c29067d7 2195 TAINT;
e2051532 2196 set_caret_X();
c29067d7
CH
2197 TAINT_NOT;
2198
43c0c913 2199#if defined(USE_SITECUSTOMIZE)
20ef40cf 2200 if (!minus_f) {
43c0c913 2201 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2202 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2203 ie a q() operator with a NUL byte as a the delimiter. This avoids
2204 problems with pathnames containing (say) ' */
43c0c913
NC
2205# ifdef PERL_IS_MINIPERL
2206 AV *const inc = GvAV(PL_incgv);
2207 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2208
2209 if (inc0) {
15870c5c
NC
2210 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2211 it should be reported immediately as a build failure. */
43c0c913
NC
2212 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2213 Perl_newSVpvf(aTHX_
147e3846 2214 "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; "
af26e4f2
FC
2215 "do {local $!; -f $f }"
2216 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2217 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2218 }
2219# else
2220 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2221 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2222 if (raw_sitelib) {
2223 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2224 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2225 INCPUSH_CAN_RELOCATE);
2226 const char *const sitelib = SvPVX(sitelib_sv);
2227 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2228 Perl_newSVpvf(aTHX_
2229 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2230 0, SVfARG(sitelib), 0,
2231 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2232 assert (SvREFCNT(sitelib_sv) == 1);
2233 SvREFCNT_dec(sitelib_sv);
2234 }
43c0c913 2235# endif
20ef40cf
GA
2236 }
2237#endif
2238
6224f72b
GS
2239 if (!scriptname)
2240 scriptname = argv[0];
3280af22 2241 if (PL_e_script) {
6224f72b
GS
2242 argc++,argv--;
2243 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2244 }
bd61b366 2245 else if (scriptname == NULL) {
6224f72b
GS
2246#ifdef MSDOS
2247 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2248 moreswitches("h");
6224f72b
GS
2249#endif
2250 scriptname = "-";
2251 }
2252
284167a5 2253 assert (!TAINT_get);
2cace6ac 2254 init_perllib();
6224f72b 2255
a52eba0e 2256 {
f20b2998 2257 bool suidscript = FALSE;
829372d3 2258
8d113837 2259 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2260 if (!rsfp) {
2261 rsfp = PerlIO_stdin();
87606032 2262 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2263 }
6224f72b 2264
b24bc095 2265 validate_suid(rsfp);
6224f72b 2266
64ca3a65 2267#ifndef PERL_MICRO
a52eba0e
NC
2268# if defined(SIGCHLD) || defined(SIGCLD)
2269 {
2270# ifndef SIGCHLD
2271# define SIGCHLD SIGCLD
2272# endif
2273 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2274 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2275 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2276 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2277 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2278 }
0b5b802d 2279 }
a52eba0e 2280# endif
64ca3a65 2281#endif
0b5b802d 2282
737c24fc 2283 if (doextract) {
faef540c 2284
f20b2998 2285 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2286 setuid scripts. */
2287 forbid_setid('x', suidscript);
f20b2998 2288 /* Hence you can't get here if suidscript is true */
faef540c 2289
95670bde
NC
2290 linestr_sv = newSV_type(SVt_PV);
2291 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2292 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2293 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2294 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2295 }
f4c556ac 2296 }
6224f72b 2297
ea726b52 2298 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2299 CvUNIQUE_on(PL_compcv);
2300
eacbb379 2301 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2302
dd69841b
BB
2303 PL_isarev = newHV();
2304
0c4f7ff0 2305 boot_core_PerlIO();
6224f72b 2306 boot_core_UNIVERSAL();
e1a479c5 2307 boot_core_mro();
4a5df386 2308 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2309
2310 if (xsinit)
acfe0abc 2311 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2312#ifndef PERL_MICRO
739a0b84 2313#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2314 init_os_extras();
6224f72b 2315#endif
64ca3a65 2316#endif
6224f72b 2317
29209bc5 2318#ifdef USE_SOCKS
1b9c9cf5
DH
2319# ifdef HAS_SOCKS5_INIT
2320 socks5_init(argv[0]);
2321# else
29209bc5 2322 SOCKSinit(argv[0]);
1b9c9cf5 2323# endif
ac27b0f5 2324#endif
29209bc5 2325
6224f72b
GS
2326 init_predump_symbols();
2327 /* init_postdump_symbols not currently designed to be called */
2328 /* more than once (ENV isn't cleared first, for example) */
2329 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2330 if (!PL_do_undump)
6224f72b
GS
2331 init_postdump_symbols(argc,argv,env);
2332
27da23d5
JH
2333 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2334 * or explicitly in some platforms.
73e1bd1a 2335 * PL_utf8locale is conditionally turned on by
085a54d9 2336 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2337 * look like the user wants to use UTF-8. */
a0fd4948 2338#if defined(__SYMBIAN32__)
27da23d5
JH
2339 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2340#endif
e27b5b51 2341# ifndef PERL_IS_MINIPERL
06e66572
JH
2342 if (PL_unicode) {
2343 /* Requires init_predump_symbols(). */
a05d7ebb 2344 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2345 IO* io;
2346 PerlIO* fp;
2347 SV* sv;
2348
a05d7ebb 2349 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2350 * and the default open disciplines. */
a05d7ebb
JH
2351 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2352 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2353 (fp = IoIFP(io)))
2354 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2355 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2356 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2357 (fp = IoOFP(io)))
2358 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2359 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2360 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2361 (fp = IoOFP(io)))
2362 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2363 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2364 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2365 SVt_PV)))) {
a05d7ebb
JH
2366 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2367 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2368 if (in) {
2369 if (out)
76f68e9b 2370 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2371 else
76f68e9b 2372 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2373 }
2374 else if (out)
76f68e9b 2375 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2376 SvSETMAGIC(sv);
2377 }
b310b053
JH
2378 }
2379 }
e27b5b51 2380#endif
b310b053 2381
c7030b81
NC
2382 {
2383 const char *s;
4ffa73a3
JH
2384 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2385 if (strEQ(s, "unsafe"))
2386 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2387 else if (strEQ(s, "safe"))
2388 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2389 else
2390 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2391 }
c7030b81 2392 }
4ffa73a3 2393
81d86705 2394
87606032 2395 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2396 SvREFCNT_dec(linestr_sv);
95670bde 2397
219f7226 2398 PL_subname = newSVpvs("main");
6224f72b 2399
5486870f
DM
2400 if (add_read_e_script)
2401 filter_add(read_e_script, NULL);
2402
6224f72b
GS
2403 /* now parse the script */
2404
93189314 2405 SETERRNO(0,SS_NORMAL);
28ac2b49 2406 if (yyparse(GRAMPROG) || PL_parser->error_count) {
c77da5ff 2407 abort_execution("", PL_origfilename);
6224f72b 2408 }
57843af0 2409 CopLINE_set(PL_curcop, 0);
03d9f026 2410 SET_CURSTASH(PL_defstash);
3280af22
NIS
2411 if (PL_e_script) {
2412 SvREFCNT_dec(PL_e_script);
a0714e2c 2413 PL_e_script = NULL;
6224f72b
GS
2414 }
2415
3280af22 2416 if (PL_do_undump)
6224f72b
GS
2417 my_unexec();
2418
57843af0
GS
2419 if (isWARN_ONCE) {
2420 SAVECOPFILE(PL_curcop);
2421 SAVECOPLINE(PL_curcop);
3280af22 2422 gv_check(PL_defstash);
57843af0 2423 }
6224f72b
GS
2424
2425 LEAVE;
2426 FREETMPS;
2427
2428#ifdef MYMALLOC
f6a607bc
RGS
2429 {
2430 const char *s;
22ff3130
HS
2431 UV uv;
2432 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2433 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2434 dump_mstats("after compilation:");
f6a607bc 2435 }
6224f72b
GS
2436#endif
2437
2438 ENTER;
febb3a6d 2439 PL_restartjmpenv = NULL;
3280af22 2440 PL_restartop = 0;
312caa8e 2441 return NULL;
6224f72b
GS
2442}
2443
954c1994
GS
2444/*
2445=for apidoc perl_run
2446
2447Tells a Perl interpreter to run. See L<perlembed>.
2448
2449=cut
2450*/
2451
6224f72b 2452int
0cb96387 2453perl_run(pTHXx)
6224f72b 2454{
6224f72b 2455 I32 oldscope;
14dd3ad8 2456 int ret = 0;
db36c5a1 2457 dJMPENV;
6224f72b 2458
7918f24d
NC
2459 PERL_ARGS_ASSERT_PERL_RUN;
2460#ifndef MULTIPLICITY
ed6c66dd 2461 PERL_UNUSED_ARG(my_perl);
7918f24d 2462#endif
9d4ba2ae 2463
3280af22 2464 oldscope = PL_scopestack_ix;
96e176bf
CL
2465#ifdef VMS
2466 VMSISH_HUSHED = 0;
2467#endif
6224f72b 2468
14dd3ad8 2469 JMPENV_PUSH(ret);
6224f72b
GS
2470 switch (ret) {
2471 case 1:
2472 cxstack_ix = -1; /* start context stack again */
312caa8e 2473 goto redo_body;
14dd3ad8 2474 case 0: /* normal completion */
14dd3ad8
GS
2475 redo_body:
2476 run_body(oldscope);
924ba076 2477 /* FALLTHROUGH */
14dd3ad8 2478 case 2: /* my_exit() */
3280af22 2479 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2480 LEAVE;
2481 FREETMPS;
03d9f026 2482 SET_CURSTASH(PL_defstash);
3a1ee7e8 2483 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2484 PL_endav && !PL_minus_c) {
ca7b837b 2485 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2486 call_list(oldscope, PL_endav);
9ebf26ad 2487 }
6224f72b
GS
2488#ifdef MYMALLOC
2489 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2490 dump_mstats("after execution: ");
2491#endif
37038d91 2492 ret = STATUS_EXIT;
14dd3ad8 2493 break;
6224f72b 2494 case 3:
312caa8e
CS
2495 if (PL_restartop) {
2496 POPSTACK_TO(PL_mainstack);
2497 goto redo_body;
6224f72b 2498 }
5637ef5b 2499 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2500 FREETMPS;
14dd3ad8
GS
2501 ret = 1;
2502 break;
6224f72b
GS
2503 }
2504
14dd3ad8
GS
2505 JMPENV_POP;
2506 return ret;
312caa8e
CS
2507}
2508
dd374669 2509STATIC void
14dd3ad8
GS
2510S_run_body(pTHX_ I32 oldscope)
2511{
d3b97530
DM
2512 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2513 PL_sawampersand ? "Enabling" : "Omitting",
2514 (unsigned int)(PL_sawampersand)));
6224f72b 2515
3280af22 2516 if (!PL_restartop) {
cf2782cd 2517#ifdef DEBUGGING
f0e3f042
CS
2518 if (DEBUG_x_TEST || DEBUG_B_TEST)
2519 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2520 if (!DEBUG_q_TEST)
2521 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2522#endif
6224f72b 2523
3280af22 2524 if (PL_minus_c) {
bf49b057 2525 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2526 my_exit(0);
2527 }
3280af22 2528 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2529 PL_DBsingle_iv = 1;
9ebf26ad 2530 if (PL_initav) {
ca7b837b 2531 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2532 call_list(oldscope, PL_initav);
9ebf26ad 2533 }
f1fac472 2534#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2535 if (PL_main_root && PL_main_root->op_slabbed)
2536 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2537#endif
6224f72b
GS
2538 }
2539
2540 /* do it */
2541
ca7b837b 2542 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2543
3280af22 2544 if (PL_restartop) {
febb3a6d 2545 PL_restartjmpenv = NULL;
533c011a 2546 PL_op = PL_restartop;
3280af22 2547 PL_restartop = 0;
cea2e8a9 2548 CALLRUNOPS(aTHX);
6224f72b 2549 }
3280af22
NIS
2550 else if (PL_main_start) {
2551 CvDEPTH(PL_main_cv) = 1;
533c011a 2552 PL_op = PL_main_start;
cea2e8a9 2553 CALLRUNOPS(aTHX);
6224f72b 2554 }
f6b3007c 2555 my_exit(0);
e5964223 2556 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2557}
2558
954c1994 2559/*
ccfc67b7
JH
2560=head1 SV Manipulation Functions
2561
954c1994
GS
2562=for apidoc p||get_sv
2563
64ace3f8 2564Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2565C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2566Perl variable does not exist then it will be created. If C<flags> is zero
2567and the variable does not exist then NULL is returned.
954c1994
GS
2568
2569=cut
2570*/
2571
6224f72b 2572SV*
64ace3f8 2573Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2574{
2575 GV *gv;
7918f24d
NC
2576
2577 PERL_ARGS_ASSERT_GET_SV;
2578
64ace3f8 2579 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2580 if (gv)
2581 return GvSV(gv);
a0714e2c 2582 return NULL;
6224f72b
GS
2583}
2584
954c1994 2585/*
ccfc67b7
JH
2586=head1 Array Manipulation Functions
2587
954c1994
GS
2588=for apidoc p||get_av
2589
f0b90de1
SF
2590Returns the AV of the specified Perl global or package array with the given
2591name (so it won't work on lexical variables). C<flags> are passed
72d33970 2592to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2593Perl variable does not exist then it will be created. If C<flags> is zero
2594and the variable does not exist then NULL is returned.
954c1994 2595
f0b90de1
SF
2596Perl equivalent: C<@{"$name"}>.
2597
954c1994
GS
2598=cut
2599*/
2600
6224f72b 2601AV*
cbfd0a87 2602Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2603{
cbfd0a87 2604 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2605
2606 PERL_ARGS_ASSERT_GET_AV;
2607
cbfd0a87 2608 if (flags)
6224f72b
GS
2609 return GvAVn(gv);
2610 if (gv)
2611 return GvAV(gv);
7d49f689 2612 return NULL;
6224f72b
GS
2613}
2614
954c1994 2615/*
ccfc67b7
JH
2616=head1 Hash Manipulation Functions
2617
954c1994
GS
2618=for apidoc p||get_hv
2619
6673a63c 2620Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2621C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2622Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2623and the variable does not exist then C<NULL> is returned.
954c1994
GS
2624
2625=cut
2626*/
2627
6224f72b 2628HV*
6673a63c 2629Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2630{
6673a63c 2631 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2632
2633 PERL_ARGS_ASSERT_GET_HV;
2634
6673a63c 2635 if (flags)
a0d0e21e
LW
2636 return GvHVn(gv);
2637 if (gv)
2638 return GvHV(gv);
5c284bb0 2639 return NULL;
a0d0e21e
LW
2640}
2641
954c1994 2642/*
ccfc67b7
JH
2643=head1 CV Manipulation Functions
2644
780a5241
NC
2645=for apidoc p||get_cvn_flags
2646
2647Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2648C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2649exist then it will be declared (which has the same effect as saying
2650C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2651then NULL is returned.
2652
954c1994
GS
2653=for apidoc p||get_cv
2654
780a5241 2655Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2656
2657=cut
2658*/
2659
a0d0e21e 2660CV*
780a5241 2661Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2662{
780a5241 2663 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2664
2665 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2666
334dda80
FC
2667 /* XXX this is probably not what they think they're getting.
2668 * It has the same effect as "sub name;", i.e. just a forward
2669 * declaration! */
780a5241 2670 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2671 return newSTUB(gv,0);
780a5241 2672 }
a0d0e21e 2673 if (gv)
8ebc5c01 2674 return GvCVu(gv);
601f1833 2675 return NULL;
a0d0e21e
LW
2676}
2677
2c67934f
NC
2678/* Nothing in core calls this now, but we can't replace it with a macro and
2679 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2680CV*
2681Perl_get_cv(pTHX_ const char *name, I32 flags)
2682{
7918f24d
NC
2683 PERL_ARGS_ASSERT_GET_CV;
2684
780a5241
NC
2685 return get_cvn_flags(name, strlen(name), flags);
2686}
2687
79072805
LW
2688/* Be sure to refetch the stack pointer after calling these routines. */
2689
954c1994 2690/*
ccfc67b7
JH
2691
2692=head1 Callback Functions
2693
954c1994
GS
2694=for apidoc p||call_argv
2695
f0b90de1 2696Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2697with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2698L<perlcall>.
f0b90de1
SF
2699
2700Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2701
2702=cut
2703*/
2704
a0d0e21e 2705I32
5aaab254 2706Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2707
8ac85365
NIS
2708 /* See G_* flags in cop.h */
2709 /* null terminated arg list */
8990e307 2710{
a0d0e21e 2711 dSP;
8990e307 2712
7918f24d
NC
2713 PERL_ARGS_ASSERT_CALL_ARGV;
2714
924508f0 2715 PUSHMARK(SP);
3dc78631
DM
2716 while (*argv) {
2717 mXPUSHs(newSVpv(*argv,0));
2718 argv++;
8990e307 2719 }
3dc78631 2720 PUTBACK;
864dbfa3 2721 return call_pv(sub_name, flags);
8990e307
LW
2722}
2723
954c1994
GS
2724/*
2725=for apidoc p||call_pv
2726
2727Performs a callback to the specified Perl sub. See L<perlcall>.
2728
2729=cut
2730*/
2731
a0d0e21e 2732I32
864dbfa3 2733Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2734 /* name of the subroutine */
2735 /* See G_* flags in cop.h */
a0d0e21e 2736{
7918f24d
NC
2737 PERL_ARGS_ASSERT_CALL_PV;
2738
0da0e728 2739 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2740}
2741
954c1994
GS
2742/*
2743=for apidoc p||call_method
2744
2745Performs a callback to the specified Perl method. The blessed object must
2746be on the stack. See L<perlcall>.
2747
2748=cut
2749*/
2750
a0d0e21e 2751I32
864dbfa3 2752Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2753 /* name of the subroutine */
2754 /* See G_* flags in cop.h */
a0d0e21e 2755{
46ca9bac 2756 STRLEN len;
c106c2be 2757 SV* sv;
7918f24d
NC
2758 PERL_ARGS_ASSERT_CALL_METHOD;
2759
46ca9bac 2760 len = strlen(methname);
c106c2be
RZ
2761 sv = flags & G_METHOD_NAMED
2762 ? sv_2mortal(newSVpvn_share(methname, len,0))
2763 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2764
c106c2be 2765 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2766}
2767
2768/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2769/*
2770=for apidoc p||call_sv
2771
078e2213
TC
2772Performs a callback to the Perl sub specified by the SV.
2773
7c0c544c 2774If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2775SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2776or C<SvPV(sv)> will be used as the name of the sub to call.
2777
2778If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2779C<SvPV(sv)> will be used as the name of the method to call.
2780
2781If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2782the name of the method to call.
2783
2784Some other values are treated specially for internal use and should
2785not be depended on.
2786
2787See L<perlcall>.
954c1994
GS
2788
2789=cut
2790*/
2791
a0d0e21e 2792I32
001d637e 2793Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2794 /* See G_* flags in cop.h */
a0d0e21e 2795{
5b434c73 2796 dVAR;
a0d0e21e 2797 LOGOP myop; /* fake syntax tree node */
b46e009d 2798 METHOP method_op;
aa689395 2799 I32 oldmark;
8ea43dc8 2800 VOL I32 retval = 0;
54310121 2801 bool oldcatch = CATCH_GET;
6224f72b 2802 int ret;
c4420975 2803 OP* const oldop = PL_op;
db36c5a1 2804 dJMPENV;
1e422769 2805
7918f24d
NC
2806 PERL_ARGS_ASSERT_CALL_SV;
2807
a0d0e21e
LW
2808 if (flags & G_DISCARD) {
2809 ENTER;
2810 SAVETMPS;
2811 }
2f8edad0
NC
2812 if (!(flags & G_WANT)) {
2813 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2814 */
2815 flags |= G_SCALAR;
2816 }
a0d0e21e 2817
aa689395 2818 Zero(&myop, 1, LOGOP);
f51d4af5 2819 if (!(flags & G_NOARGS))
aa689395 2820 myop.op_flags |= OPf_STACKED;
4f911530 2821 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2822 SAVEOP();
533c011a 2823 PL_op = (OP*)&myop;
aa689395 2824
8c9009ad 2825 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2826 dSP;
2827 EXTEND(SP, 1);
8c9009ad
DD
2828 PUSHs(sv);
2829 PUTBACK;
5b434c73 2830 }
aa689395 2831 oldmark = TOPMARK;
a0d0e21e 2832
3280af22 2833 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2834 /* Handle first BEGIN of -d. */
3280af22 2835 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2836 /* Try harder, since this may have been a sighandler, thus
2837 * curstash may be meaningless. */
ea726b52 2838 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2839 && !(flags & G_NODEBUG))
5ff48db8 2840 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2841
c106c2be 2842 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2843 Zero(&method_op, 1, METHOP);
2844 method_op.op_next = (OP*)&myop;
2845 PL_op = (OP*)&method_op;
c106c2be 2846 if ( flags & G_METHOD_NAMED ) {
b46e009d 2847 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2848 method_op.op_type = OP_METHOD_NAMED;
2849 method_op.op_u.op_meth_sv = sv;
c106c2be 2850 } else {
b46e009d 2851 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2852 method_op.op_type = OP_METHOD;
c106c2be
RZ
2853 }
2854 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2855 myop.op_type = OP_ENTERSUB;
968b3946
GS
2856 }
2857
312caa8e 2858 if (!(flags & G_EVAL)) {
0cdb2077 2859 CATCH_SET(TRUE);
d6f07c05 2860 CALL_BODY_SUB((OP*)&myop);
312caa8e 2861 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2862 CATCH_SET(oldcatch);
312caa8e
CS
2863 }
2864 else {
8e90e786 2865 I32 old_cxix;
d78bda3d 2866 myop.op_other = (OP*)&myop;
101d6365 2867 (void)POPMARK;
8e90e786 2868 old_cxix = cxstack_ix;
274ed8ae 2869 create_eval_scope(NULL, flags|G_FAKINGEVAL);
c318a6ee 2870 INCMARK;
a0d0e21e 2871
14dd3ad8 2872 JMPENV_PUSH(ret);
edb2152a 2873
6224f72b
GS
2874 switch (ret) {
2875 case 0:
14dd3ad8 2876 redo_body:
d6f07c05 2877 CALL_BODY_SUB((OP*)&myop);
312caa8e 2878 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2879 if (!(flags & G_KEEPERR)) {
ab69dbc2 2880 CLEAR_ERRSV();
8433848b 2881 }
a0d0e21e 2882 break;
6224f72b 2883 case 1:
f86702cc 2884 STATUS_ALL_FAILURE;
924ba076 2885 /* FALLTHROUGH */
6224f72b 2886 case 2:
a0d0e21e 2887 /* my_exit() was called */
03d9f026 2888 SET_CURSTASH(PL_defstash);
a0d0e21e 2889 FREETMPS;
14dd3ad8 2890 JMPENV_POP;
f86702cc 2891 my_exit_jump();
e5964223 2892 NOT_REACHED; /* NOTREACHED */
6224f72b 2893 case 3:
3280af22 2894 if (PL_restartop) {
febb3a6d 2895 PL_restartjmpenv = NULL;
533c011a 2896 PL_op = PL_restartop;
3280af22 2897 PL_restartop = 0;
312caa8e 2898 goto redo_body;
a0d0e21e 2899 }
3280af22 2900 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2901 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2902 retval = 0;
2903 else {
2904 retval = 1;
3280af22 2905 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2906 }
312caa8e 2907 break;
a0d0e21e 2908 }
a0d0e21e 2909
8e90e786
DM
2910 /* if we croaked, depending on how we croaked the eval scope
2911 * may or may not have already been popped */
2912 if (cxstack_ix > old_cxix) {
2913 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2914 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2915 delete_eval_scope();
8e90e786 2916 }
14dd3ad8 2917 JMPENV_POP;
a0d0e21e 2918 }
1e422769 2919
a0d0e21e 2920 if (flags & G_DISCARD) {
3280af22 2921 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2922 retval = 0;
2923 FREETMPS;
2924 LEAVE;
2925 }
533c011a 2926 PL_op = oldop;
a0d0e21e
LW
2927 return retval;
2928}
2929
6e72f9df 2930/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2931
954c1994
GS
2932/*
2933=for apidoc p||eval_sv
2934
72d33970 2935Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2936as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2937
2938=cut
2939*/
2940
a0d0e21e 2941I32
864dbfa3 2942Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2943
8ac85365 2944 /* See G_* flags in cop.h */
a0d0e21e 2945{
97aff369 2946 dVAR;
a0d0e21e 2947 UNOP myop; /* fake syntax tree node */
5b434c73 2948 VOL I32 oldmark;
8ea43dc8 2949 VOL I32 retval = 0;
6224f72b 2950 int ret;
c4420975 2951 OP* const oldop = PL_op;
db36c5a1 2952 dJMPENV;
84902520 2953
7918f24d
NC
2954 PERL_ARGS_ASSERT_EVAL_SV;
2955
4633a7c4
LW
2956 if (flags & G_DISCARD) {
2957 ENTER;
2958 SAVETMPS;
2959 }
2960
462e5cf6 2961 SAVEOP();
533c011a 2962 PL_op = (OP*)&myop;
5ff48db8 2963 Zero(&myop, 1, UNOP);
5b434c73
DD
2964 {
2965 dSP;
2966 oldmark = SP - PL_stack_base;
2967 EXTEND(SP, 1);
2968 PUSHs(sv);
2969 PUTBACK;
2970 }
79072805 2971
4633a7c4
LW
2972 if (!(flags & G_NOARGS))
2973 myop.op_flags = OPf_STACKED;
6e72f9df 2974 myop.op_type = OP_ENTEREVAL;
4f911530 2975 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2976 if (flags & G_KEEPERR)
2977 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2978
2979 if (flags & G_RE_REPARSING)
2980 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2981
dedbcade 2982 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 2983 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
2984 TAINT_PROPER("eval_sv()");
2985
14dd3ad8 2986 JMPENV_PUSH(ret);
6224f72b
GS
2987 switch (ret) {
2988 case 0:
14dd3ad8 2989 redo_body:
2ba65d5f
DM
2990 if (PL_op == (OP*)(&myop)) {
2991 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2992 if (!PL_op)
2993 goto fail; /* failed in compilation */
2994 }
4aca2f62 2995 CALLRUNOPS(aTHX);
312caa8e 2996 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2997 if (!(flags & G_KEEPERR)) {
ab69dbc2 2998 CLEAR_ERRSV();
8433848b 2999 }
4633a7c4 3000 break;
6224f72b 3001 case 1:
f86702cc 3002 STATUS_ALL_FAILURE;
924ba076 3003 /* FALLTHROUGH */
6224f72b 3004 case 2:
4633a7c4 3005 /* my_exit() was called */
03d9f026 3006 SET_CURSTASH(PL_defstash);
4633a7c4 3007 FREETMPS;
14dd3ad8 3008 JMPENV_POP;
f86702cc 3009 my_exit_jump();
e5964223 3010 NOT_REACHED; /* NOTREACHED */
6224f72b 3011 case 3:
3280af22 3012 if (PL_restartop) {
febb3a6d 3013 PL_restartjmpenv = NULL;
533c011a 3014 PL_op = PL_restartop;
3280af22 3015 PL_restartop = 0;
312caa8e 3016 goto redo_body;
4633a7c4 3017 }
4aca2f62 3018 fail:
3280af22 3019 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 3020 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
3021 retval = 0;
3022 else {
3023 retval = 1;
3280af22 3024 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 3025 }
312caa8e 3026 break;
4633a7c4
LW
3027 }
3028
14dd3ad8 3029 JMPENV_POP;
4633a7c4 3030 if (flags & G_DISCARD) {
3280af22 3031 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
3032 retval = 0;
3033 FREETMPS;
3034 LEAVE;
3035 }
533c011a 3036 PL_op = oldop;
4633a7c4
LW
3037 return retval;
3038}
3039
954c1994
GS
3040/*
3041=for apidoc p||eval_pv
3042
422791e4 3043Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
3044
3045=cut
3046*/
3047
137443ea 3048SV*
864dbfa3 3049Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3050{
137443ea
PP
3051 SV* sv = newSVpv(p, 0);
3052
7918f24d
NC
3053 PERL_ARGS_ASSERT_EVAL_PV;
3054
864dbfa3 3055 eval_sv(sv, G_SCALAR);
137443ea
PP
3056 SvREFCNT_dec(sv);
3057
ed1786ad
DD
3058 {
3059 dSP;
3060 sv = POPs;
3061 PUTBACK;
3062 }
137443ea 3063
eed484f9
DD
3064 /* just check empty string or undef? */
3065 if (croak_on_error) {
3066 SV * const errsv = ERRSV;
3067 if(SvTRUE_NN(errsv))
3068 /* replace with croak_sv? */
3069 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3070 }
137443ea
PP
3071
3072 return sv;
3073}
3074
4633a7c4
LW
3075/* Require a module. */
3076
954c1994 3077/*
ccfc67b7
JH
3078=head1 Embedding Functions
3079
954c1994
GS
3080=for apidoc p||require_pv
3081
7d3fb230
BS
3082Tells Perl to C<require> the file named by the string argument. It is
3083analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3084implemented that way; consider using load_module instead.
954c1994 3085
7d3fb230 3086=cut */
954c1994 3087
4633a7c4 3088void
864dbfa3 3089Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3090{
d3acc0f7 3091 dSP;
97aff369 3092 SV* sv;
7918f24d
NC
3093
3094 PERL_ARGS_ASSERT_REQUIRE_PV;
3095
e788e7d3 3096 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3097 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3098 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3099 POPSTACK;
79072805
LW
3100}
3101
76e3520e 3102STATIC void
b6f82619 3103S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3104{
ab821d7f 3105 /* This message really ought to be max 23 lines.
75c72d73 3106 * Removed -h because the user already knows that option. Others? */
fb73857a 3107
1566c39d
NC
3108 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3109 minimum of 509 character string literals. */
27da23d5 3110 static const char * const usage_msg[] = {
1566c39d
NC
3111" -0[octal] specify record separator (\\0, if no argument)\n"
3112" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3113" -C[number/list] enables the listed Unicode features\n"
3114" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3115" -d[:debugger] run program under debugger\n"
3116" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3117" -e program one line of program (several -e's allowed, omit programfile)\n"
3118" -E program like -e, but enables all optional features\n"
3119" -f don't do $sitelib/sitecustomize.pl at startup\n"
3120" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3121" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3122" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3123" -l[octal] enable line ending processing, specifies line terminator\n"
3124" -[mM][-]module execute \"use/no module...\" before executing program\n"
3125" -n assume \"while (<>) { ... }\" loop around program\n"
3126" -p assume loop like -n but print line also, like sed\n"
3127" -s enable rudimentary parsing for switches after programfile\n"
3128" -S look for programfile using PATH environment variable\n",
3129" -t enable tainting warnings\n"
3130" -T enable tainting checks\n"
3131" -u dump core after parsing program\n"
3132" -U allow unsafe operations\n"
3133" -v print version, patchlevel and license\n"
3134" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3135" -w enable many useful warnings\n"
1566c39d
NC
3136" -W enable all warnings\n"
3137" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3138" -X disable all warnings\n"
3139" \n"
3140"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3141NULL
3142};
27da23d5 3143 const char * const *p = usage_msg;
1566c39d 3144 PerlIO *out = PerlIO_stdout();
fb73857a 3145
1566c39d
NC
3146 PerlIO_printf(out,
3147 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3148 PL_origargv[0]);
fb73857a 3149 while (*p)
1566c39d 3150 PerlIO_puts(out, *p++);
b6f82619 3151 my_exit(0);
4633a7c4
LW
3152}
3153
b4ab917c
DM
3154/* convert a string of -D options (or digits) into an int.
3155 * sets *s to point to the char after the options */
3156
3157#ifdef DEBUGGING
3158int
e1ec3a88 3159Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3160{
27da23d5 3161 static const char * const usage_msgd[] = {
651b8f1a
NC
3162 " Debugging flag values: (see also -d)\n"
3163 " p Tokenizing and parsing (with v, displays parse stack)\n"
3164 " s Stack snapshots (with v, displays all stacks)\n"
3165 " l Context (loop) stack processing\n"
3166 " t Trace execution\n"
3167 " o Method and overloading resolution\n",
3168 " c String/numeric conversions\n"
3169 " P Print profiling info, source file input state\n"
3170 " m Memory and SV allocation\n"
3171 " f Format processing\n"
3172 " r Regular expression parsing and execution\n"
3173 " x Syntax tree dump\n",
3174 " u Tainting checks\n"
3175 " H Hash dump -- usurps values()\n"
3176 " X Scratchpad allocation\n"
3177 " D Cleaning up\n"
56967202 3178 " S Op slab allocation\n"
651b8f1a
NC
3179 " T Tokenising\n"
3180 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3181 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3182 " v Verbose: use in conjunction with other flags\n"
3183 " C Copy On Write\n"
3184 " A Consistency checks on internal structures\n"
3185 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3186 " M trace smart match resolution\n"
3187 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3188 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3189 " i trace PerlIO layer processing\n",
e6e64d9b
JC
3190 NULL
3191 };
22ff3130 3192 UV uv = 0;
7918f24d
NC
3193
3194 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3195
b4ab917c
DM
3196 if (isALPHA(**s)) {
3197 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3198 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3199
0eb30aeb 3200 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3201 const char * const d = strchr(debopts,**s);
b4ab917c 3202 if (d)
22ff3130 3203 uv |= 1 << (d - debopts);
b4ab917c 3204 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3205 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3206 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3207 }
3208 }
e6e64d9b 3209 else if (isDIGIT(**s)) {
96e440d2 3210 const char* e;
22ff3130 3211 if (grok_atoUV(*s, &uv, &e))
96e440d2 3212 *s = e;
0eb30aeb 3213 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3214 }
ddcf8bc1 3215 else if (givehelp) {
06e869a4 3216 const char *const *p = usage_msgd;
651b8f1a 3217 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3218 }
22ff3130 3219 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3220}
3221#endif
3222
79072805
LW
3223/* This routine handles any switches that can be given during run */
3224
c7030b81
NC
3225const char *
3226Perl_moreswitches(pTHX_ const char *s)
79072805 3227{
27da23d5 3228 dVAR;
84c133a0 3229 UV rschar;
0544e6df 3230 const char option = *s; /* used to remember option in -m/-M code */
79072805 3231
7918f24d
NC
3232 PERL_ARGS_ASSERT_MORESWITCHES;
3233
79072805
LW
3234 switch (*s) {
3235 case '0':
a863c7d1 3236 {
f2095865 3237 I32 flags = 0;
a3b680e6 3238 STRLEN numlen;
f2095865
JH
3239
3240 SvREFCNT_dec(PL_rs);
3241 if (s[1] == 'x' && s[2]) {
a3b680e6 3242 const char *e = s+=2;
f2095865
JH
3243 U8 *tmps;
3244
a3b680e6
AL
3245 while (*e)
3246 e++;
f2095865
JH
3247 numlen = e - s;
3248 flags = PERL_SCAN_SILENT_ILLDIGIT;
3249 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3250 if (s + numlen < e) {
3251 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3252 numlen = 0;
3253 s--;
3254 }
396482e1 3255 PL_rs = newSVpvs("");
10656159 3256 tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865 3257 uvchr_to_utf8(tmps, rschar);
5f560d8a 3258 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3259 SvUTF8_on(PL_rs);
3260 }
3261 else {
3262 numlen = 4;
3263 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3264 if (rschar & ~((U8)~0))
3265 PL_rs = &PL_sv_undef;
3266 else if (!rschar && numlen >= 2)
396482e1 3267 PL_rs = newSVpvs("");
f2095865
JH
3268 else {
3269 char ch = (char)rschar;
3270 PL_rs = newSVpvn(&ch, 1);
3271 }
3272 }
64ace3f8 3273 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3274 return s + numlen;
a863c7d1 3275 }
46487f74 3276 case 'C':
a05d7ebb 3277 s++;
dd374669 3278 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3279 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3280 PL_utf8cache = -1;
46487f74 3281 return s;
2304df62 3282 case 'F':
5fc691f1 3283 PL_minus_a = TRUE;
3280af22 3284 PL_minus_F = TRUE;
24ffa309 3285 PL_minus_n = TRUE;
ebce5377
RGS
3286 PL_splitstr = ++s;
3287 while (*s && !isSPACE(*s)) ++s;
e49e380e 3288 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3289 return s;
79072805 3290 case 'a':
3280af22 3291 PL_minus_a = TRUE;
24ffa309 3292 PL_minus_n = TRUE;
79072805
LW
3293 s++;
3294 return s;
3295 case 'c':
3280af22 3296 PL_minus_c = TRUE;
79072805
LW
3297 s++;
3298 return s;
3299 case 'd':
f20b2998 3300 forbid_setid('d', FALSE);
4633a7c4 3301 s++;
2cbb2ee1
RGS
3302
3303 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3304 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3305 ++s;
3306 my_setenv("PERL5DB_THREADED", "1");
3307 }
3308
70c94a19
RR
3309 /* The following permits -d:Mod to accepts arguments following an =
3310 in the fashion that -MSome::Mod does. */
3311 if (*s == ':' || *s == '=') {
b19934fb
NC
3312 const char *start;
3313 const char *end;
3314 SV *sv;
3315
3316 if (*++s == '-') {
3317 ++s;
3318 sv = newSVpvs("no Devel::");
3319 } else {
3320 sv = newSVpvs("use Devel::");
3321 }
3322
3323 start = s;
3324 end = s + strlen(s);
f85893a1 3325
b19934fb 3326 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3327 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3328 if (*s != '=')
f85893a1 3329 sv_catpvn(sv, start, end - start);
70c94a19
RR
3330 else {
3331 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3332 /* Don't use NUL as q// delimiter here, this string goes in the
3333 * environment. */
3334 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3335 }
f85893a1 3336 s = end;
184f32ec 3337 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3338 SvREFCNT_dec(sv);
4633a7c4 3339 }
ed094faf 3340 if (!PL_perldb) {
3280af22 3341 PL_perldb = PERLDB_ALL;
a0d0e21e 3342 init_debugger();
ed094faf 3343 }
79072805
LW
3344 return s;
3345 case 'D':
0453d815 3346 {
79072805 3347#ifdef DEBUGGING
f20b2998 3348 forbid_setid('D', FALSE);
b4ab917c 3349 s++;
dd374669 3350 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3351#else /* !DEBUGGING */
0453d815 3352 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3353 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3354 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3355 for (s++; isWORDCHAR(*s); s++) ;
79072805 3356#endif
79072805 3357 return s;
2b5060ae 3358 NOT_REACHED; /* NOTREACHED */
0453d815 3359 }
4633a7c4 3360 case 'h':
b6f82619 3361 usage();
2b5060ae
DM
3362 NOT_REACHED; /* NOTREACHED */
3363
79072805 3364 case 'i':
43c5f42d 3365 Safefree(PL_inplace);
c030f24b
GH
3366#if defined(__CYGWIN__) /* do backup extension automagically */
3367 if (*(s+1) == '\0') {
c86a4f2e 3368 PL_inplace = savepvs(".bak");
c030f24b
GH
3369 return s+1;
3370 }
3371#endif /* __CYGWIN__ */
5ef5d758 3372 {
d4c19fe8 3373 const char * const start = ++s;
5ef5d758
NC
3374 while (*s && !isSPACE(*s))
3375 ++s;
3376
3377 PL_inplace = savepvn(start, s - start);
3378 }
fb73857a 3379 return s;
4e49a025 3380 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3381 forbid_setid('I', FALSE);
fb73857a
PP
3382 ++s;
3383 while (*s && isSPACE(*s))
3384 ++s;
3385 if (*s) {
c7030b81 3386 const char *e, *p;
0df16ed7
GS
3387 p = s;
3388 /* ignore trailing spaces (possibly followed by other switches) */
3389 do {
3390 for (e = p; *e && !isSPACE(*e); e++) ;
3391 p = e;
3392 while (isSPACE(*p))
3393 p++;
3394 } while (*p && *p != '-');
55b4bc1c 3395 incpush(s, e-s,
e28f3139 3396 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3397 s = p;
3398 if (*s == '-')
3399 s++;
79072805
LW
3400 }
3401 else
a67e862a 3402 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3403 return s;
79072805 3404 case 'l':
3280af22 3405 PL_minus_l = TRUE;
79072805 3406 s++;
7889fe52
NIS
3407 if (PL_ors_sv) {
3408 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3409 PL_ors_sv = NULL;
7889fe52 3410 }
79072805 3411 if (isDIGIT(*s)) {
53305cf1 3412 I32 flags = 0;
a3b680e6 3413 STRLEN numlen;
396482e1 3414 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3415 numlen = 3 + (*s == '0');
3416 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3417 s += numlen;
3418 }
3419 else {
8bfdd7d9 3420 if (RsPARA(PL_rs)) {
396482e1 3421 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3422 }
3423 else {
8bfdd7d9 3424 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3425 }
79072805
LW
3426 }
3427 return s;
1a30305b 3428 case 'M':
f20b2998 3429 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3430 /* FALLTHROUGH */
1a30305b 3431 case 'm':
f20b2998 3432 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3433 if (*++s) {
c7030b81 3434 const char *start;
b64cb68c 3435 const char *end;
11343788 3436 SV *sv;
e1ec3a88 3437 const char *use = "use ";
0544e6df 3438 bool colon = FALSE;
a5f75d66 3439 /* -M-foo == 'no foo' */
d0043bd1
NC
3440 /* Leading space on " no " is deliberate, to make both
3441 possibilities the same length. */
3442 if (*s == '-') { use = " no "; ++s; }
3443 sv = newSVpvn(use,4);
a5f75d66 3444 start = s;
1a30305b 3445 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3446 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3447 if( *s++ == ':' ) {
3448 if( *s == ':' )
3449 s++;
3450 else
3451 colon = TRUE;
3452 }
3453 }
3454 if (s == start)
3455 Perl_croak(aTHX_ "Module name required with -%c option",
3456 option);
3457 if (colon)
3458 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3459 "contains single ':'",
63da6837 3460 (int)(s - start), start, option);
b64cb68c 3461 end = s + strlen(s);
c07a80fd 3462 if (*s != '=') {
b64cb68c 3463 sv_catpvn(sv, start, end - start);
0544e6df 3464 if (option == 'm') {
c07a80fd 3465 if (*s != '\0')
cea2e8a9 3466 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3467 sv_catpvs( sv, " ()");
c07a80fd
PP
3468 }
3469 } else {
11343788 3470 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3471 /* Use NUL as q''-delimiter. */
3472 sv_catpvs(sv, " split(/,/,q\0");
3473 ++s;
3474 sv_catpvn(sv, s, end - s);
396482e1 3475 sv_catpvs(sv, "\0)");
c07a80fd 3476 }
b64cb68c 3477 s = end;
29a861e7