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locale.c: Move statements properly within #if
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * 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
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2aa47728 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
42# ifdef I_SYSUIO
43# include <sys/uio.h>
44# endif
45
46union control_un {
47 struct cmsghdr cm;
48 char control[CMSG_SPACE(sizeof(int))];
49};
50
2aa47728
NC
51#endif
52
5311654c
JH
53#ifndef HZ
54# ifdef CLK_TCK
55# define HZ CLK_TCK
56# else
57# define HZ 60
58# endif
59#endif
60
7114a2d2 61#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 62char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL
73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC
87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC
90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
71ad1b0c 95 HINTS_REFCNT_INIT;
e6827a76 96 MUTEX_INIT(&PL_dollarzero_mutex);
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DM
97 MUTEX_INIT(&PL_my_ctx_mutex);
98# endif
e6827a76 99 }
c0bce9aa
NC
100#if defined(USE_ITHREADS)
101 else
102#else
103 /* This always happens for non-ithreads */
104#endif
105 {
e6827a76
NC
106 PERL_SET_THX(my_perl);
107 }
108}
06d86050 109
cbec8ebe
DM
110
111/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
112
113void
114Perl_sys_init(int* argc, char*** argv)
115{
4fc0badb 116 dVAR;
7918f24d
NC
117
118 PERL_ARGS_ASSERT_SYS_INIT;
119
cbec8ebe
DM
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
123}
124
125void
126Perl_sys_init3(int* argc, char*** argv, char*** env)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT3;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
136}
137
138void
88772978 139Perl_sys_term(void)
cbec8ebe 140{
4fc0badb 141 dVAR;
bf81751b
DM
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
144 }
cbec8ebe
DM
145}
146
147
32e30700
GS
148#ifdef PERL_IMPLICIT_SYS
149PerlInterpreter *
7766f137
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150perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
155{
156 PerlInterpreter *my_perl;
7918f24d
NC
157
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
159
9f653bb5 160 /* Newx() needs interpreter, so call malloc() instead */
32e30700 161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 162 S_init_tls_and_interp(my_perl);
32e30700
GS
163 Zero(my_perl, 1, PerlInterpreter);
164 PL_Mem = ipM;
7766f137
GS
165 PL_MemShared = ipMS;
166 PL_MemParse = ipMP;
32e30700
GS
167 PL_Env = ipE;
168 PL_StdIO = ipStd;
169 PL_LIO = ipLIO;
170 PL_Dir = ipD;
171 PL_Sock = ipS;
172 PL_Proc = ipP;
7cb608b5 173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 174
32e30700
GS
175 return my_perl;
176}
177#else
954c1994
GS
178
179/*
ccfc67b7
JH
180=head1 Embedding Functions
181
954c1994
GS
182=for apidoc perl_alloc
183
184Allocates a new Perl interpreter. See L<perlembed>.
185
186=cut
187*/
188
93a17b20 189PerlInterpreter *
cea2e8a9 190perl_alloc(void)
79072805 191{
cea2e8a9 192 PerlInterpreter *my_perl;
79072805 193
9f653bb5 194 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 196
e6827a76 197 S_init_tls_and_interp(my_perl);
7cb608b5 198#ifndef PERL_TRACK_MEMPOOL
07409e01 199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
200#else
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
203 return my_perl;
204#endif
79072805 205}
32e30700 206#endif /* PERL_IMPLICIT_SYS */
79072805 207
954c1994
GS
208/*
209=for apidoc perl_construct
210
211Initializes a new Perl interpreter. See L<perlembed>.
212
213=cut
214*/
215
79072805 216void
0cb96387 217perl_construct(pTHXx)
79072805 218{
27da23d5 219 dVAR;
7918f24d
NC
220
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
222
8990e307 223#ifdef MULTIPLICITY
54aff467 224 init_interp();
ac27b0f5 225 PL_perl_destruct_level = 1;
54aff467 226#else
7918f24d 227 PERL_UNUSED_ARG(my_perl);
54aff467
GS
228 if (PL_perl_destruct_level > 0)
229 init_interp();
230#endif
34caed6d
DM
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
75d476e2
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233#ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
235#endif
236
0d96b528 237 init_constants();
34caed6d
DM
238
239 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
241
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 243#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 244 PL_pidstatus = newHV();
ca0c25f6 245#endif
79072805 246
396482e1 247 PL_rs = newSVpvs("\n");
dc92893f 248
cea2e8a9 249 init_stacks();
79072805 250
748a9306 251 init_ids();
a5f75d66 252
312caa8e 253 JMPENV_BOOTSTRAP;
f86702cc
PP
254 STATUS_ALL_SUCCESS;
255
0672f40e 256 init_i18nl10n(1);
0b5b802d 257
ab821d7f 258#if defined(LOCAL_PATCH_COUNT)
3280af22 259 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
260#endif
261
52853b95
GS
262#ifdef HAVE_INTERP_INTERN
263 sys_intern_init();
264#endif
265
3a1ee7e8 266 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 267
3280af22
NIS
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 270 PL_errors = newSVpvs("");
76f68e9b
MHM
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 274#ifdef USE_ITHREADS
402d2eb1
NC
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 278 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 280#endif
e5dd39fc 281#ifdef USE_REENTRANT_API
59bd0823 282 Perl_reentrant_init(aTHX);
e5dd39fc 283#endif
7dc86639
YO
284#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
290 *
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
295 }
296#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
297
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
301 PL_strtab = newHV();
302
3d47000e
AB
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
305
a38ab475
RZ
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
307
2f42fcb0
JH
308#ifndef PERL_MICRO
309# ifdef USE_ENVIRON_ARRAY
0631ea03 310 PL_origenviron = environ;
2f42fcb0 311# endif
0631ea03
AB
312#endif
313
5311654c 314 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 315 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
b6c36746 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB
324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 327
27da23d5
JH
328#ifdef HAS_MMAP
329 if (!PL_mmap_page_size) {
330#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
331 {
332 SETERRNO(0, SS_NORMAL);
333# ifdef _SC_PAGESIZE
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
335# else
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
337# endif
338 if ((long) PL_mmap_page_size < 0) {
339 if (errno) {
44f8325f 340 SV * const error = ERRSV;
d4c19fe8 341 SvUPGRADE(error, SVt_PV);
0510663f 342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
343 }
344 else
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
346 }
347 }
348#else
349# ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
351# else
352# if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
354# endif
355# endif
356#endif
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
360 }
361#endif /* HAS_MMAP */
362
363#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
368#endif
369
7d113631
NC
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
371
a3e6e81e 372 PL_registered_mros = newHV();
9e169432
NC
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
a3e6e81e 375
7b8dd5f4
KW
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
64935bc6 392 PL_GCB_invlist = _new_invlist_C_array(Grapheme_Cluster_Break_invlist);
06ae2722 393 PL_SB_invlist = _new_invlist_C_array(Sentence_Break_invlist);
ae3bb8ea 394 PL_WB_invlist = _new_invlist_C_array(Word_Break_invlist);
7b8dd5f4 395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC
441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC
449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
462 abort();
463 }
bf357333
NC
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
466 abort();
467 }
468
808ad2d0
NC
469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC
480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
491
808ad2d0
NC
492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC
511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS
516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG
539 assert(PL_scopestack_ix == 1);
540
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH
549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
553 i = grok_atou(s, NULL);
554 }
36e77d41
DD
555#ifdef DEBUGGING
556 if (destruct_level < i) destruct_level = i;
557#endif
558#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
36e77d41 561#endif
5f05dabc 562 }
4633a7c4
LW
563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
9ebf26ad 572 if (PL_endav && !PL_minus_c) {
ca7b837b 573 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 574 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 575 }
f3faeb53 576 JMPENV_POP;
26f423df 577 }
f3faeb53 578 LEAVE;
a0d0e21e 579 FREETMPS;
3d22c4f0 580 assert(PL_scopestack_ix == 0);
a0d0e21e 581
e00b64d4 582 /* Need to flush since END blocks can produce output */
f13a2bc0 583 my_fflush_all();
e00b64d4 584
75d476e2
SM
585#ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
591 }
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
596#endif
597
598
16c91539 599 if (PL_threadhook(aTHX)) {
62375a60 600 /* Threads hook has vetoed further cleanup */
c301d606 601 PL_veto_cleanup = TRUE;
37038d91 602 return STATUS_EXIT;
62375a60
NIS
603 }
604
2aa47728
NC
605#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
611 fail gracefully */
612 int fd[2];
613
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
616 abort();
617 }
618
619 child = fork();
620 if(child == -1) {
621 perror("Debug leaking scalars fork failed");
622 abort();
623 }
624 if (!child) {
625 /* We are the child */
3125a5a4
NC
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
628 int f;
808ad2d0
NC
629 const char *where;
630 /* Our success message is an integer 0, and a char 0 */
b61433a9 631 static const char success[sizeof(int) + 1] = {0};
3125a5a4 632
2aa47728 633 close(fd[0]);
2aa47728 634
3125a5a4
NC
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
bf357333
NC
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
646
647 f = sysconf(_SC_OPEN_MAX);
648 if(f < 0) {
808ad2d0
NC
649 where = "sysconf failed";
650 goto abort;
3125a5a4
NC
651 }
652 while (f--) {
653 if (f == sock)
654 continue;
3125a5a4
NC
655 close(f);
656 }
657
2aa47728
NC
658 while (1) {
659 SV *target;
bf357333
NC
660 union control_un control;
661 struct msghdr msg;
662 struct iovec vec[1];
663 struct cmsghdr *cmptr;
664 ssize_t got;
665 int got_fd;
666
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
670 msg.msg_name = NULL;
671 msg.msg_namelen = 0;
672 msg.msg_iov = vec;
c3caa5c3 673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
674
675 vec[0].iov_base = (void*)&target;
676 vec[0].iov_len = sizeof(target);
677
678 got = recvmsg(sock, &msg, 0);
2aa47728
NC
679
680 if(got == 0)
681 break;
682 if(got < 0) {
808ad2d0
NC
683 where = "recv failed";
684 goto abort;
2aa47728
NC
685 }
686 if(got < sizeof(target)) {
808ad2d0
NC
687 where = "short recv";
688 goto abort;
2aa47728 689 }
bf357333 690
808ad2d0
NC
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
692 where = "no cmsg";
693 goto abort;
694 }
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
697 goto abort;
698 }
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
701 goto abort;
702 }
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
705 goto abort;
706 }
bf357333
NC
707
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
711 */
808ad2d0
NC
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
714 where = "dup2";
715 goto abort;
716 }
717 }
2aa47728 718 sv_dump(target);
bf357333 719
2aa47728
NC
720 PerlIO_flush(Perl_debug_log);
721
808ad2d0 722 got = write(sock, &success, sizeof(success));
2aa47728
NC
723
724 if(got < 0) {
808ad2d0
NC
725 where = "write failed";
726 goto abort;
2aa47728 727 }
808ad2d0
NC
728 if(got < sizeof(success)) {
729 where = "short write";
730 goto abort;
2aa47728
NC
731 }
732 }
733 _exit(0);
808ad2d0
NC
734 abort:
735 {
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
740 {&length, 1},
741 {(void*)where, length}
742 };
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
748 reading the data. */
749 sleep(2);
750 _exit((got == -1) ? errno : 0);
751 }
bf357333 752 /* End of child. */
2aa47728 753 }
41e4abd8 754 PL_dumper_fd = fd[0];
2aa47728
NC
755 close(fd[1]);
756 }
757#endif
758
ff0cee69
PP
759 /* We must account for everything. */
760
761 /* Destroy the main CV and syntax tree */
37e77c23
FC
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
17fbfdf6 766 PL_curcop = &PL_compiling;
3280af22 767 if (PL_main_root) {
4e380990
DM
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 772 }
3280af22 773 op_free(PL_main_root);
5f66b61c 774 PL_main_root = NULL;
a0d0e21e 775 }
5f66b61c 776 PL_main_start = NULL;
aac9d523
DM
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
3280af22 781 SvREFCNT_dec(PL_main_cv);
601f1833 782 PL_main_cv = NULL;
ca7b837b 783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 784
13621cfb
NIS
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
787 be cleaned up now.
788 */
789
790 PerlIO_destruct(aTHX);
791
ddf23d4a
SM
792 /*
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
796 */
797 sv_clean_objs();
8990e307 798
5cd24f17 799 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 800 SvREFCNT_dec(PL_warnhook);
a0714e2c 801 PL_warnhook = NULL;
3280af22 802 SvREFCNT_dec(PL_diehook);
a0714e2c 803 PL_diehook = NULL;
5cd24f17 804
4b556e6c 805 /* call exit list functions */
3280af22 806 while (PL_exitlistlen-- > 0)
acfe0abc 807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 808
3280af22 809 Safefree(PL_exitlist);
4b556e6c 810
1c4916e5
CB
811 PL_exitlist = NULL;
812 PL_exitlistlen = 0;
813
a3e6e81e
NC
814 SvREFCNT_dec(PL_registered_mros);
815
551a8b83 816 /* jettison our possibly duplicated environment */
4b647fb0
DM
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
819 */
2f42fcb0 820#ifndef PERL_MICRO
4b647fb0 821#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 822 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
823#ifdef USE_ITHREADS
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
826#endif
827 )
828 {
551a8b83
JH
829 I32 i;
830
831 for (i = 0; environ[i]; i++)
4b420006 832 safesysfree(environ[i]);
0631ea03 833
4b420006
JH
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
551a8b83
JH
836
837 environ = PL_origenviron;
838 }
839#endif
2f42fcb0 840#endif /* !PERL_MICRO */
551a8b83 841
30985c42
JH
842 if (destruct_level == 0) {
843
844 DEBUG_P(debprofdump());
845
846#if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
849#endif
850
851 CopFILE_free(&PL_compiling);
30985c42
JH
852
853 /* The exit() function will do everything that needs doing. */
854 return STATUS_EXIT;
855 }
856
9fa9f06b
KW
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
858
5f8cb046
DM
859#ifdef USE_ITHREADS
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
864 */
0547a729
DM
865 {
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
868
869 for (; i; i--) {
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
872 }
873 }
5f8cb046
DM
874#endif
875
0547a729 876
ad64d0ec 877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
878 PL_stashcache = NULL;
879
5f05dabc
PP
880 /* loosen bonds of global variables */
881
2f9285f8
DM
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
8ebc5c01
PP
886 }
887
84386e14
RGS
888 if (PL_minus_F) {
889 Safefree(PL_splitstr);
890 PL_splitstr = NULL;
891 }
892
8ebc5c01 893 /* switches */
3280af22
NIS
894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
1a904fc8 901#ifdef PERL_SAWAMPERSAND
d3b97530 902 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 903#endif
3280af22
NIS
904 PL_unsafe = FALSE;
905
906 Safefree(PL_inplace);
bd61b366 907 PL_inplace = NULL;
a7cb1f99 908 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
909
910 if (PL_e_script) {
911 SvREFCNT_dec(PL_e_script);
a0714e2c 912 PL_e_script = NULL;
8ebc5c01
PP
913 }
914
bf9cdc68
RG
915 PL_perldb = 0;
916
8ebc5c01
PP
917 /* magical thingies */
918
e23d9e2f
CS
919 SvREFCNT_dec(PL_ofsgv); /* *, */
920 PL_ofsgv = NULL;
5f05dabc 921
7889fe52 922 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 923 PL_ors_sv = NULL;
8ebc5c01 924
3280af22 925 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 926 PL_rs = NULL;
dc92893f 927
d33b2eba 928 Safefree(PL_osname); /* $^O */
bd61b366 929 PL_osname = NULL;
5f05dabc 930
3280af22 931 SvREFCNT_dec(PL_statname);
a0714e2c
SS
932 PL_statname = NULL;
933 PL_statgv = NULL;
5f05dabc 934
8ebc5c01
PP
935 /* defgv, aka *_ should be taken care of elsewhere */
936
7d5ea4e7
GS
937 /* float buffer */
938 Safefree(PL_efloatbuf);
bd61b366 939 PL_efloatbuf = NULL;
7d5ea4e7
GS
940 PL_efloatsize = 0;
941
8ebc5c01 942 /* startup and shutdown function lists */
3280af22 943 SvREFCNT_dec(PL_beginav);
5a837c8f 944 SvREFCNT_dec(PL_beginav_save);
3280af22 945 SvREFCNT_dec(PL_endav);
7d30b5c4 946 SvREFCNT_dec(PL_checkav);
ece599bd 947 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
948 SvREFCNT_dec(PL_unitcheckav);
949 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 950 SvREFCNT_dec(PL_initav);
7d49f689
NC
951 PL_beginav = NULL;
952 PL_beginav_save = NULL;
953 PL_endav = NULL;
954 PL_checkav = NULL;
955 PL_checkav_save = NULL;
3c10abe3
AG
956 PL_unitcheckav = NULL;
957 PL_unitcheckav_save = NULL;
7d49f689 958 PL_initav = NULL;
5618dfe8 959
8ebc5c01 960 /* shortcuts just get cleared */
a0714e2c
SS
961 PL_hintgv = NULL;
962 PL_errgv = NULL;
a0714e2c
SS
963 PL_argvoutgv = NULL;
964 PL_stdingv = NULL;
965 PL_stderrgv = NULL;
966 PL_last_in_gv = NULL;
a0714e2c
SS
967 PL_DBsingle = NULL;
968 PL_DBtrace = NULL;
969 PL_DBsignal = NULL;
a6d69523
TC
970 PL_DBsingle_iv = 0;
971 PL_DBtrace_iv = 0;
972 PL_DBsignal_iv = 0;
601f1833 973 PL_DBcv = NULL;
7d49f689 974 PL_dbargs = NULL;
5c284bb0 975 PL_debstash = NULL;
8ebc5c01 976
cf93a474 977 SvREFCNT_dec(PL_envgv);
f03015cd 978 SvREFCNT_dec(PL_incgv);
722fa0e9 979 SvREFCNT_dec(PL_argvgv);
475b1e90 980 SvREFCNT_dec(PL_replgv);
8cece913
FC
981 SvREFCNT_dec(PL_DBgv);
982 SvREFCNT_dec(PL_DBline);
983 SvREFCNT_dec(PL_DBsub);
cf93a474 984 PL_envgv = NULL;
f03015cd 985 PL_incgv = NULL;
722fa0e9 986 PL_argvgv = NULL;
475b1e90 987 PL_replgv = NULL;
8cece913
FC
988 PL_DBgv = NULL;
989 PL_DBline = NULL;
990 PL_DBsub = NULL;
991
7a1c5554 992 SvREFCNT_dec(PL_argvout_stack);
7d49f689 993 PL_argvout_stack = NULL;
8ebc5c01 994
5c831c24 995 SvREFCNT_dec(PL_modglobal);
5c284bb0 996 PL_modglobal = NULL;
5c831c24 997 SvREFCNT_dec(PL_preambleav);
7d49f689 998 PL_preambleav = NULL;
5c831c24 999 SvREFCNT_dec(PL_subname);
a0714e2c 1000 PL_subname = NULL;
ca0c25f6 1001#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1002 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1003 PL_pidstatus = NULL;
ca0c25f6 1004#endif
5c831c24 1005 SvREFCNT_dec(PL_toptarget);
a0714e2c 1006 PL_toptarget = NULL;
5c831c24 1007 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1008 PL_bodytarget = NULL;
1009 PL_formtarget = NULL;
5c831c24 1010
d33b2eba 1011 /* free locale stuff */
b9582b6a 1012#ifdef USE_LOCALE_COLLATE
d33b2eba 1013 Safefree(PL_collation_name);
bd61b366 1014 PL_collation_name = NULL;
b9582b6a 1015#endif
d33b2eba 1016
b9582b6a 1017#ifdef USE_LOCALE_NUMERIC
d33b2eba 1018 Safefree(PL_numeric_name);
bd61b366 1019 PL_numeric_name = NULL;
a453c169 1020 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1021 PL_numeric_radix_sv = NULL;
b9582b6a 1022#endif
d33b2eba 1023
9c0b6888
KW
1024 /* clear character classes */
1025 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1026 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1027 PL_utf8_swash_ptrs[i] = NULL;
1028 }
5c831c24
GS
1029 SvREFCNT_dec(PL_utf8_mark);
1030 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1031 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1032 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1033 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1034 SvREFCNT_dec(PL_utf8_idstart);
1035 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1036 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1037 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1038 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1039 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1040 SvREFCNT_dec(PL_UpperLatin1);
1041 SvREFCNT_dec(PL_Latin1);
1042 SvREFCNT_dec(PL_NonL1NonFinalFold);
1043 SvREFCNT_dec(PL_HasMultiCharFold);
780fcc9f 1044 SvREFCNT_dec(PL_warn_locale);
a0714e2c
SS
1045 PL_utf8_mark = NULL;
1046 PL_utf8_toupper = NULL;
1047 PL_utf8_totitle = NULL;
1048 PL_utf8_tolower = NULL;
1049 PL_utf8_tofold = NULL;
1050 PL_utf8_idstart = NULL;
1051 PL_utf8_idcont = NULL;
2726813d 1052 PL_utf8_foldclosures = NULL;
9fa9f06b 1053 PL_AboveLatin1 = NULL;
e0a1ff7a 1054 PL_InBitmap = NULL;
9fa9f06b 1055 PL_HasMultiCharFold = NULL;
780fcc9f 1056 PL_warn_locale = NULL;
9fa9f06b
KW
1057 PL_Latin1 = NULL;
1058 PL_NonL1NonFinalFold = NULL;
1059 PL_UpperLatin1 = NULL;
86f72d56 1060 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1061 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1062 PL_XPosix_ptrs[i] = NULL;
86f72d56 1063 }
64935bc6 1064 PL_GCB_invlist = NULL;
06ae2722 1065 PL_SB_invlist = NULL;
ae3bb8ea 1066 PL_WB_invlist = NULL;
5c831c24 1067
971a9dd3 1068 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1069 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1070 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1071 cophh_free(CopHINTHASH_get(&PL_compiling));
1072 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1073 CopFILE_free(&PL_compiling);
5c831c24 1074
a0d0e21e 1075 /* Prepare to destruct main symbol table. */
5f05dabc 1076
3280af22 1077 hv = PL_defstash;
ca556bcd
DM
1078 /* break ref loop *:: <=> %:: */
1079 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1080 PL_defstash = 0;
a0d0e21e 1081 SvREFCNT_dec(hv);
5c831c24 1082 SvREFCNT_dec(PL_curstname);
a0714e2c 1083 PL_curstname = NULL;
a0d0e21e 1084
5a844595
GS
1085 /* clear queued errors */
1086 SvREFCNT_dec(PL_errors);
a0714e2c 1087 PL_errors = NULL;
5a844595 1088
dd69841b
BB
1089 SvREFCNT_dec(PL_isarev);
1090
a0d0e21e 1091 FREETMPS;
9b387841 1092 if (destruct_level >= 2) {
3280af22 1093 if (PL_scopestack_ix != 0)
9b387841
NC
1094 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1095 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1096 (long)PL_scopestack_ix);
3280af22 1097 if (PL_savestack_ix != 0)
9b387841
NC
1098 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1099 "Unbalanced saves: %ld more saves than restores\n",
1100 (long)PL_savestack_ix);
3280af22 1101 if (PL_tmps_floor != -1)
9b387841
NC
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1103 (long)PL_tmps_floor + 1);
a0d0e21e 1104 if (cxstack_ix != -1)
9b387841
NC
1105 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1106 (long)cxstack_ix + 1);
a0d0e21e 1107 }
8990e307 1108
0547a729
DM
1109#ifdef USE_ITHREADS
1110 SvREFCNT_dec(PL_regex_padav);
1111 PL_regex_padav = NULL;
1112 PL_regex_pad = NULL;
1113#endif
1114
776df701 1115#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1116 /* the entries in this list are allocated via SV PVX's, so get freed
1117 * in sv_clean_all */
1118 Safefree(PL_my_cxt_list);
776df701 1119#endif
57bb2458 1120
8990e307 1121 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1122
1123 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1124 while (sv_clean_all() > 2)
5226ed68
JH
1125 ;
1126
23083432
FC
1127#ifdef USE_ITHREADS
1128 Safefree(PL_stashpad); /* must come after sv_clean_all */
1129#endif
1130
d4777f27
GS
1131 AvREAL_off(PL_fdpid); /* no surviving entries */
1132 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1133 PL_fdpid = NULL;
d33b2eba 1134
6c644e78
GS
1135#ifdef HAVE_INTERP_INTERN
1136 sys_intern_clear();
1137#endif
1138
a38ab475
RZ
1139 /* constant strings */
1140 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1141 SvREFCNT_dec(PL_sv_consts[i]);
1142 PL_sv_consts[i] = NULL;
1143 }
1144
6e72f9df
PP
1145 /* Destruct the global string table. */
1146 {
1147 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1148 * so that sv_free() won't fail on them.
80459961
NC
1149 * Now that the global string table is using a single hunk of memory
1150 * for both HE and HEK, we either need to explicitly unshare it the
1151 * correct way, or actually free things here.
6e72f9df 1152 */
80459961
NC
1153 I32 riter = 0;
1154 const I32 max = HvMAX(PL_strtab);
c4420975 1155 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1156 HE *hent = array[0];
1157
6e72f9df 1158 for (;;) {
0453d815 1159 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1160 HE * const next = HeNEXT(hent);
9014280d 1161 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1162 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1163 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1164 Safefree(hent);
1165 hent = next;
6e72f9df
PP
1166 }
1167 if (!hent) {
1168 if (++riter > max)
1169 break;
1170 hent = array[riter];
1171 }
1172 }
80459961
NC
1173
1174 Safefree(array);
1175 HvARRAY(PL_strtab) = 0;
1176 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1177 }
3280af22 1178 SvREFCNT_dec(PL_strtab);
6e72f9df 1179
e652bb2f 1180#ifdef USE_ITHREADS
c21d1a0f 1181 /* free the pointer tables used for cloning */
a0739874 1182 ptr_table_free(PL_ptr_table);
bf9cdc68 1183 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1184#endif
a0739874 1185
d33b2eba
GS
1186 /* free special SVs */
1187
1188 SvREFCNT(&PL_sv_yes) = 0;
1189 sv_clear(&PL_sv_yes);
1190 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1191 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1192
1193 SvREFCNT(&PL_sv_no) = 0;
1194 sv_clear(&PL_sv_no);
1195 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1196 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1197
9f375a43
DM
1198 {
1199 int i;
1200 for (i=0; i<=2; i++) {
1201 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1202 sv_clear(PERL_DEBUG_PAD(i));
1203 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1204 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1205 }
1206 }
1207
0453d815 1208 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1209 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1210
eba0f806
DM
1211#ifdef DEBUG_LEAKING_SCALARS
1212 if (PL_sv_count != 0) {
1213 SV* sva;
1214 SV* sv;
eb578fdb 1215 SV* svend;
eba0f806 1216
ad64d0ec 1217 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1218 svend = &sva[SvREFCNT(sva)];
1219 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1220 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1221 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1222 " flags=0x%"UVxf
fd0854ff 1223 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1224 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1225 "serial %"UVuf"\n",
574b8821
NC
1226 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1227 pTHX__VALUE,
fd0854ff
DM
1228 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1229 sv->sv_debug_line,
1230 sv->sv_debug_inpad ? "for" : "by",
1231 sv->sv_debug_optype ?
1232 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1233 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1234 sv->sv_debug_serial
fd0854ff 1235 );
2aa47728 1236#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1237 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1238#endif
eba0f806
DM
1239 }
1240 }
1241 }
1242 }
2aa47728
NC
1243#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1244 {
1245 int status;
1246 fd_set rset;
1247 /* Wait for up to 4 seconds for child to terminate.
1248 This seems to be the least effort way of timing out on reaping
1249 its exit status. */
1250 struct timeval waitfor = {4, 0};
41e4abd8 1251 int sock = PL_dumper_fd;
2aa47728
NC
1252
1253 shutdown(sock, 1);
1254 FD_ZERO(&rset);
1255 FD_SET(sock, &rset);
1256 select(sock + 1, &rset, NULL, NULL, &waitfor);
1257 waitpid(child, &status, WNOHANG);
1258 close(sock);
1259 }
1260#endif
eba0f806 1261#endif
77abb4c6
NC
1262#ifdef DEBUG_LEAKING_SCALARS_ABORT
1263 if (PL_sv_count)
1264 abort();
1265#endif
bf9cdc68 1266 PL_sv_count = 0;
eba0f806 1267
56a2bab7 1268#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1269 /* No more IO - including error messages ! */
1270 PerlIO_cleanup(aTHX);
1271#endif
1272
9f4bd222 1273 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1274 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1275 for no arg - and will try and SvREFCNT_dec it.
1276 */
1277 SvREFCNT(&PL_sv_undef) = 0;
1278 SvREADONLY_off(&PL_sv_undef);
1279
3280af22 1280 Safefree(PL_origfilename);
bd61b366 1281 PL_origfilename = NULL;
43c5f42d 1282 Safefree(PL_reg_curpm);
dd28f7bb 1283 free_tied_hv_pool();
3280af22 1284 Safefree(PL_op_mask);
cf36064f 1285 Safefree(PL_psig_name);
bf9cdc68 1286 PL_psig_name = (SV**)NULL;
d525a7b2 1287 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1288 {
1289 /* We need to NULL PL_psig_pend first, so that
1290 signal handlers know not to use it */
1291 int *psig_save = PL_psig_pend;
1292 PL_psig_pend = (int*)NULL;
1293 Safefree(psig_save);
1294 }
6e72f9df 1295 nuke_stacks();
284167a5
SM
1296 TAINTING_set(FALSE);
1297 TAINT_WARN_set(FALSE);
3280af22 1298 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1299
a0d0e21e 1300 DEBUG_P(debprofdump());
d33b2eba 1301
b173165c
FC
1302 PL_debug = 0;
1303
e5dd39fc 1304#ifdef USE_REENTRANT_API
10bc17b6 1305 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1306#endif
1307
612f20c3
GS
1308 sv_free_arenas();
1309
5d9a96ca
DM
1310 while (PL_regmatch_slab) {
1311 regmatch_slab *s = PL_regmatch_slab;
1312 PL_regmatch_slab = PL_regmatch_slab->next;
1313 Safefree(s);
1314 }
1315
fc36a67e
PP
1316 /* As the absolutely last thing, free the non-arena SV for mess() */
1317
3280af22 1318 if (PL_mess_sv) {
f350b448
NC
1319 /* we know that type == SVt_PVMG */
1320
9c63abab 1321 /* it could have accumulated taint magic */
f350b448
NC
1322 MAGIC* mg;
1323 MAGIC* moremagic;
1324 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1325 moremagic = mg->mg_moremagic;
1326 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1327 && mg->mg_len >= 0)
1328 Safefree(mg->mg_ptr);
1329 Safefree(mg);
9c63abab 1330 }
f350b448 1331
fc36a67e 1332 /* we know that type >= SVt_PV */
8bd4d4c5 1333 SvPV_free(PL_mess_sv);
3280af22
NIS
1334 Safefree(SvANY(PL_mess_sv));
1335 Safefree(PL_mess_sv);
a0714e2c 1336 PL_mess_sv = NULL;
fc36a67e 1337 }
37038d91 1338 return STATUS_EXIT;
79072805
LW
1339}
1340
954c1994
GS
1341/*
1342=for apidoc perl_free
1343
1344Releases a Perl interpreter. See L<perlembed>.
1345
1346=cut
1347*/
1348
79072805 1349void
0cb96387 1350perl_free(pTHXx)
79072805 1351{
5174512c
NC
1352 dVAR;
1353
7918f24d
NC
1354 PERL_ARGS_ASSERT_PERL_FREE;
1355
c301d606
DM
1356 if (PL_veto_cleanup)
1357 return;
1358
7cb608b5 1359#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1360 {
1361 /*
1362 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1363 * value as we're probably hunting memory leaks then
1364 */
36e77d41 1365 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1366 const U32 old_debug = PL_debug;
55ef9aae
MHM
1367 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1368 thread at thread exit. */
4fd0a9b8
NC
1369 if (DEBUG_m_TEST) {
1370 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1371 "free this thread's memory\n");
1372 PL_debug &= ~ DEBUG_m_FLAG;
1373 }
6edcbed6
DD
1374 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1375 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1376 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1377 safesysfree(ptr);
1378 }
4fd0a9b8 1379 PL_debug = old_debug;
55ef9aae
MHM
1380 }
1381 }
7cb608b5
NC
1382#endif
1383
acfe0abc 1384#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1385# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1386 {
acfe0abc 1387# ifdef NETWARE
7af12a34 1388 void *host = nw_internal_host;
7af12a34 1389 PerlMem_free(aTHXx);
7af12a34 1390 nw_delete_internal_host(host);
acfe0abc 1391# else
bdb50480
NC
1392 void *host = w32_internal_host;
1393 PerlMem_free(aTHXx);
7af12a34 1394 win32_delete_internal_host(host);
acfe0abc 1395# endif
7af12a34 1396 }
1c0ca838
GS
1397# else
1398 PerlMem_free(aTHXx);
1399# endif
acfe0abc
GS
1400#else
1401 PerlMem_free(aTHXx);
76e3520e 1402#endif
79072805
LW
1403}
1404
b7f7fff6 1405#if defined(USE_ITHREADS)
aebd1ac7
GA
1406/* provide destructors to clean up the thread key when libperl is unloaded */
1407#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1408
826955bd 1409#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1410#pragma fini "perl_fini"
666ad1ec
GA
1411#elif defined(__sun) && !defined(__GNUC__)
1412#pragma fini (perl_fini)
aebd1ac7
GA
1413#endif
1414
0dbb1585
AL
1415static void
1416#if defined(__GNUC__)
1417__attribute__((destructor))
aebd1ac7 1418#endif
de009b76 1419perl_fini(void)
aebd1ac7 1420{
27da23d5 1421 dVAR;
5c64bffd
NC
1422 if (
1423#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1424 my_vars &&
1425#endif
1426 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1427 FREE_THREAD_KEY;
1428}
1429
1430#endif /* WIN32 */
1431#endif /* THREADS */
1432
4b556e6c 1433void
864dbfa3 1434Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1435{
3280af22
NIS
1436 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1437 PL_exitlist[PL_exitlistlen].fn = fn;
1438 PL_exitlist[PL_exitlistlen].ptr = ptr;
1439 ++PL_exitlistlen;
4b556e6c
JD
1440}
1441
954c1994
GS
1442/*
1443=for apidoc perl_parse
1444
1445Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1446
1447=cut
1448*/
1449
03d9f026
FC
1450#define SET_CURSTASH(newstash) \
1451 if (PL_curstash != newstash) { \
1452 SvREFCNT_dec(PL_curstash); \
1453 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1454 }
1455
79072805 1456int
0cb96387 1457perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1458{
27da23d5 1459 dVAR;
6224f72b 1460 I32 oldscope;
6224f72b 1461 int ret;
db36c5a1 1462 dJMPENV;
8d063cd8 1463
7918f24d
NC
1464 PERL_ARGS_ASSERT_PERL_PARSE;
1465#ifndef MULTIPLICITY
ed6c66dd 1466 PERL_UNUSED_ARG(my_perl);
7918f24d 1467#endif
7dc86639 1468#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1469 {
7dc86639
YO
1470 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1471
96e440d2 1472 if (s && (grok_atou(s, NULL) == 1)) {
7dc86639
YO
1473 unsigned char *seed= PERL_HASH_SEED;
1474 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1475 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1476 while (seed < seed_end) {
1477 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1478 }
6a5b4183
YO
1479#ifdef PERL_HASH_RANDOMIZE_KEYS
1480 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1481 PL_HASH_RAND_BITS_ENABLED,
1482 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1483#endif
7dc86639
YO
1484 PerlIO_printf(Perl_debug_log, "\n");
1485 }
b0891165
JH
1486 }
1487#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1488 PL_origargc = argc;
e2975953 1489 PL_origargv = argv;
a0d0e21e 1490
a2722ac9
GA
1491 if (PL_origalen != 0) {
1492 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1493 }
1494 else {
3cb9023d
JH
1495 /* Set PL_origalen be the sum of the contiguous argv[]
1496 * elements plus the size of the env in case that it is
e9137a8e 1497 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1498 * as the maximum modifiable length of $0. In the worst case
1499 * the area we are able to modify is limited to the size of
43c32782 1500 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1501 * --jhi */
e1ec3a88 1502 const char *s = NULL;
54bfe034 1503 int i;
b7249aaf 1504 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1505 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1506 const UV aligned =
43c32782
JH
1507 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1508
1509 /* See if all the arguments are contiguous in memory. Note
1510 * that 'contiguous' is a loose term because some platforms
1511 * align the argv[] and the envp[]. If the arguments look
1512 * like non-aligned, assume that they are 'strictly' or
1513 * 'traditionally' contiguous. If the arguments look like
1514 * aligned, we just check that they are within aligned
1515 * PTRSIZE bytes. As long as no system has something bizarre
1516 * like the argv[] interleaved with some other data, we are
1517 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1518 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1519 while (*s) s++;
1520 for (i = 1; i < PL_origargc; i++) {
1521 if ((PL_origargv[i] == s + 1
43c32782 1522#ifdef OS2
c8941eeb 1523 || PL_origargv[i] == s + 2
43c32782 1524#endif
c8941eeb
JH
1525 )
1526 ||
1527 (aligned &&
1528 (PL_origargv[i] > s &&
1529 PL_origargv[i] <=
1530 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1531 )
1532 {
1533 s = PL_origargv[i];
1534 while (*s) s++;
1535 }
1536 else
1537 break;
54bfe034 1538 }
54bfe034 1539 }
a4a109c2
JD
1540
1541#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1542 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1543 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1544 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1545 ||
1546 (aligned &&
1547 (PL_origenviron[0] > s &&
1548 PL_origenviron[0] <=
1549 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1550 )
1551 {
9d419b5f 1552#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1553 s = PL_origenviron[0];
1554 while (*s) s++;
1555#endif
bd61b366 1556 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1557 /* Force copy of environment. */
1558 for (i = 1; PL_origenviron[i]; i++) {
1559 if (PL_origenviron[i] == s + 1
1560 ||
1561 (aligned &&
1562 (PL_origenviron[i] > s &&
1563 PL_origenviron[i] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 )
1566 {
1567 s = PL_origenviron[i];
1568 while (*s) s++;
1569 }
1570 else
1571 break;
54bfe034 1572 }
43c32782 1573 }
54bfe034 1574 }
a4a109c2
JD
1575#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1576
2d2af554 1577 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1578 }
1579
3280af22 1580 if (PL_do_undump) {
a0d0e21e
LW
1581
1582 /* Come here if running an undumped a.out. */
1583
3280af22
NIS
1584 PL_origfilename = savepv(argv[0]);
1585 PL_do_undump = FALSE;
a0d0e21e 1586 cxstack_ix = -1; /* start label stack again */
748a9306 1587 init_ids();
284167a5 1588 assert (!TAINT_get);
b7975bdd 1589 TAINT;
e2051532 1590 set_caret_X();
b7975bdd 1591 TAINT_NOT;
a0d0e21e
LW
1592 init_postdump_symbols(argc,argv,env);
1593 return 0;
1594 }
1595
3280af22 1596 if (PL_main_root) {
3280af22 1597 op_free(PL_main_root);
5f66b61c 1598 PL_main_root = NULL;
ff0cee69 1599 }
5f66b61c 1600 PL_main_start = NULL;
3280af22 1601 SvREFCNT_dec(PL_main_cv);
601f1833 1602 PL_main_cv = NULL;
79072805 1603
3280af22
NIS
1604 time(&PL_basetime);
1605 oldscope = PL_scopestack_ix;
599cee73 1606 PL_dowarn = G_WARN_OFF;
f86702cc 1607
14dd3ad8 1608 JMPENV_PUSH(ret);
6224f72b 1609 switch (ret) {
312caa8e 1610 case 0:
14dd3ad8 1611 parse_body(env,xsinit);
9ebf26ad 1612 if (PL_unitcheckav) {
3c10abe3 1613 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1614 }
1615 if (PL_checkav) {
ca7b837b 1616 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1617 call_list(oldscope, PL_checkav);
9ebf26ad 1618 }
14dd3ad8
GS
1619 ret = 0;
1620 break;
6224f72b
GS
1621 case 1:
1622 STATUS_ALL_FAILURE;
924ba076 1623 /* FALLTHROUGH */
6224f72b
GS
1624 case 2:
1625 /* my_exit() was called */
3280af22 1626 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1627 LEAVE;
1628 FREETMPS;
03d9f026 1629 SET_CURSTASH(PL_defstash);
9ebf26ad 1630 if (PL_unitcheckav) {
3c10abe3 1631 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1632 }
1633 if (PL_checkav) {
ca7b837b 1634 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1635 call_list(oldscope, PL_checkav);
9ebf26ad 1636 }
37038d91 1637 ret = STATUS_EXIT;
14dd3ad8 1638 break;
6224f72b 1639 case 3:
bf49b057 1640 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1641 ret = 1;
1642 break;
6224f72b 1643 }
14dd3ad8
GS
1644 JMPENV_POP;
1645 return ret;
1646}
1647
4a5df386
NC
1648/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1649 miniperl, and we need to see those flags reflected in the values here. */
1650
1651/* What this returns is subject to change. Use the public interface in Config.
1652 */
1653static void
1654S_Internals_V(pTHX_ CV *cv)
1655{
1656 dXSARGS;
1657#ifdef LOCAL_PATCH_COUNT
1658 const int local_patch_count = LOCAL_PATCH_COUNT;
1659#else
1660 const int local_patch_count = 0;
1661#endif
2dc296d2 1662 const int entries = 3 + local_patch_count;
4a5df386 1663 int i;
fe1c5936 1664 static const char non_bincompat_options[] =
4a5df386
NC
1665# ifdef DEBUGGING
1666 " DEBUGGING"
1667# endif
1668# ifdef NO_MATHOMS
0d311fbe 1669 " NO_MATHOMS"
4a5df386 1670# endif
59b86f4b
DM
1671# ifdef NO_HASH_SEED
1672 " NO_HASH_SEED"
1673# endif
3b0e4ee2
MB
1674# ifdef NO_TAINT_SUPPORT
1675 " NO_TAINT_SUPPORT"
1676# endif
cb26ef7a
MB
1677# ifdef PERL_BOOL_AS_CHAR
1678 " PERL_BOOL_AS_CHAR"
1679# endif
4a5df386
NC
1680# ifdef PERL_DISABLE_PMC
1681 " PERL_DISABLE_PMC"
1682# endif
1683# ifdef PERL_DONT_CREATE_GVSV
1684 " PERL_DONT_CREATE_GVSV"
1685# endif
9a044a43
NC
1686# ifdef PERL_EXTERNAL_GLOB
1687 " PERL_EXTERNAL_GLOB"
1688# endif
59b86f4b
DM
1689# ifdef PERL_HASH_FUNC_SIPHASH
1690 " PERL_HASH_FUNC_SIPHASH"
1691# endif
1692# ifdef PERL_HASH_FUNC_SDBM
1693 " PERL_HASH_FUNC_SDBM"
1694# endif
1695# ifdef PERL_HASH_FUNC_DJB2
1696 " PERL_HASH_FUNC_DJB2"
1697# endif
1698# ifdef PERL_HASH_FUNC_SUPERFAST
1699 " PERL_HASH_FUNC_SUPERFAST"
1700# endif
1701# ifdef PERL_HASH_FUNC_MURMUR3
1702 " PERL_HASH_FUNC_MURMUR3"
1703# endif
1704# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1705 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1706# endif
1707# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1708 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1709# endif
1710# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1711 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1712# endif
4a5df386
NC
1713# ifdef PERL_IS_MINIPERL
1714 " PERL_IS_MINIPERL"
1715# endif
1716# ifdef PERL_MALLOC_WRAP
1717 " PERL_MALLOC_WRAP"
1718# endif
1719# ifdef PERL_MEM_LOG
1720 " PERL_MEM_LOG"
1721# endif
1722# ifdef PERL_MEM_LOG_NOIMPL
1723 " PERL_MEM_LOG_NOIMPL"
1724# endif
2542212d
DM
1725# ifdef PERL_NEW_COPY_ON_WRITE
1726 " PERL_NEW_COPY_ON_WRITE"
1727# endif
59b86f4b
DM
1728# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1729 " PERL_PERTURB_KEYS_DETERMINISTIC"
1730# endif
1731# ifdef PERL_PERTURB_KEYS_DISABLED
1732 " PERL_PERTURB_KEYS_DISABLED"
1733# endif
1734# ifdef PERL_PERTURB_KEYS_RANDOM
1735 " PERL_PERTURB_KEYS_RANDOM"
1736# endif
c3cf41ec
NC
1737# ifdef PERL_PRESERVE_IVUV
1738 " PERL_PRESERVE_IVUV"
1739# endif
c051e30b
NC
1740# ifdef PERL_RELOCATABLE_INCPUSH
1741 " PERL_RELOCATABLE_INCPUSH"
1742# endif
4a5df386
NC
1743# ifdef PERL_USE_DEVEL
1744 " PERL_USE_DEVEL"
1745# endif
1746# ifdef PERL_USE_SAFE_PUTENV
1747 " PERL_USE_SAFE_PUTENV"
1748# endif
a3749cf3
NC
1749# ifdef UNLINK_ALL_VERSIONS
1750 " UNLINK_ALL_VERSIONS"
1751# endif
de618ee4
NC
1752# ifdef USE_ATTRIBUTES_FOR_PERLIO
1753 " USE_ATTRIBUTES_FOR_PERLIO"
1754# endif
4a5df386
NC
1755# ifdef USE_FAST_STDIO
1756 " USE_FAST_STDIO"
1757# endif
59b86f4b
DM
1758# ifdef USE_HASH_SEED_EXPLICIT
1759 " USE_HASH_SEED_EXPLICIT"
1760# endif
98548bdf
NC
1761# ifdef USE_LOCALE
1762 " USE_LOCALE"
1763# endif
98548bdf
NC
1764# ifdef USE_LOCALE_CTYPE
1765 " USE_LOCALE_CTYPE"
1766# endif
5a8d8935
NC
1767# ifdef USE_PERL_ATOF
1768 " USE_PERL_ATOF"
1769# endif
0d311fbe
NC
1770# ifdef USE_SITECUSTOMIZE
1771 " USE_SITECUSTOMIZE"
1772# endif
4a5df386
NC
1773 ;
1774 PERL_UNUSED_ARG(cv);
d3db1514 1775 PERL_UNUSED_VAR(items);
4a5df386
NC
1776
1777 EXTEND(SP, entries);
1778
1779 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1780 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1781 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1782
1783#ifdef __DATE__
1784# ifdef __TIME__
1785 PUSHs(Perl_newSVpvn_flags(aTHX_
1786 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1787 SVs_TEMP));
1788# else
1789 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1790 SVs_TEMP));
1791# endif
1792#else
1793 PUSHs(&PL_sv_undef);
1794#endif
1795
4a5df386
NC
1796 for (i = 1; i <= local_patch_count; i++) {
1797 /* This will be an undef, if PL_localpatches[i] is NULL. */
1798 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1799 }
1800
1801 XSRETURN(entries);
1802}
1803
be71fc8f
NC
1804#define INCPUSH_UNSHIFT 0x01
1805#define INCPUSH_ADD_OLD_VERS 0x02
1806#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1807#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1808#define INCPUSH_NOT_BASEDIR 0x10
1809#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1810#define INCPUSH_ADD_SUB_DIRS \
1811 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1812
312caa8e 1813STATIC void *
14dd3ad8 1814S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1815{
27da23d5 1816 dVAR;
2f9285f8 1817 PerlIO *rsfp;
312caa8e 1818 int argc = PL_origargc;
8f42b153 1819 char **argv = PL_origargv;
e1ec3a88 1820 const char *scriptname = NULL;
312caa8e 1821 VOL bool dosearch = FALSE;
eb578fdb 1822 char c;
737c24fc 1823 bool doextract = FALSE;
bd61b366 1824 const char *cddir = NULL;
ab019eaa 1825#ifdef USE_SITECUSTOMIZE
20ef40cf 1826 bool minus_f = FALSE;
ab019eaa 1827#endif
95670bde 1828 SV *linestr_sv = NULL;
5486870f 1829 bool add_read_e_script = FALSE;
87606032 1830 U32 lex_start_flags = 0;
009d90df 1831
ca7b837b 1832 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1833
6224f72b 1834 init_main_stash();
54310121 1835
c7030b81
NC
1836 {
1837 const char *s;
6224f72b
GS
1838 for (argc--,argv++; argc > 0; argc--,argv++) {
1839 if (argv[0][0] != '-' || !argv[0][1])
1840 break;
6224f72b
GS
1841 s = argv[0]+1;
1842 reswitch:
47f56822 1843 switch ((c = *s)) {
729a02f2 1844 case 'C':
1d5472a9
GS
1845#ifndef PERL_STRICT_CR
1846 case '\r':
1847#endif
6224f72b
GS
1848 case ' ':
1849 case '0':
1850 case 'F':
1851 case 'a':
1852 case 'c':
1853 case 'd':
1854 case 'D':
1855 case 'h':
1856 case 'i':
1857 case 'l':
1858 case 'M':
1859 case 'm':
1860 case 'n':
1861 case 'p':
1862 case 's':
1863 case 'u':
1864 case 'U':
1865 case 'v':
599cee73
PM
1866 case 'W':
1867 case 'X':
6224f72b 1868 case 'w':
97bd5664 1869 if ((s = moreswitches(s)))
6224f72b
GS
1870 goto reswitch;
1871 break;
33b78306 1872
1dbad523 1873 case 't':
dc6d7f5c 1874#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1875 /* silently ignore */
dc6d7f5c 1876#elif defined(NO_TAINT_SUPPORT)
3231f579 1877 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1878 "Cowardly refusing to run with -t or -T flags");
1879#else
22f7c9c9 1880 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1881 if( !TAINTING_get ) {
1882 TAINT_WARN_set(TRUE);
1883 TAINTING_set(TRUE);
317ea90d 1884 }
284167a5 1885#endif
317ea90d
MS
1886 s++;
1887 goto reswitch;
6224f72b 1888 case 'T':
dc6d7f5c 1889#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1890 /* silently ignore */
dc6d7f5c 1891#elif defined(NO_TAINT_SUPPORT)
3231f579 1892 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1893 "Cowardly refusing to run with -t or -T flags");
1894#else
22f7c9c9 1895 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1896 TAINTING_set(TRUE);
1897 TAINT_WARN_set(FALSE);
1898#endif
6224f72b
GS
1899 s++;
1900 goto reswitch;
f86702cc 1901
bc9b29db
RH
1902 case 'E':
1903 PL_minus_E = TRUE;
924ba076 1904 /* FALLTHROUGH */
6224f72b 1905 case 'e':
f20b2998 1906 forbid_setid('e', FALSE);
3280af22 1907 if (!PL_e_script) {
396482e1 1908 PL_e_script = newSVpvs("");
5486870f 1909 add_read_e_script = TRUE;
6224f72b
GS
1910 }
1911 if (*++s)
3280af22 1912 sv_catpv(PL_e_script, s);
6224f72b 1913 else if (argv[1]) {
3280af22 1914 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1915 argc--,argv++;
1916 }
1917 else
47f56822 1918 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1919 sv_catpvs(PL_e_script, "\n");
6224f72b 1920 break;
afe37c7d 1921
20ef40cf 1922 case 'f':
f5542d3a 1923#ifdef USE_SITECUSTOMIZE
20ef40cf 1924 minus_f = TRUE;
f5542d3a 1925#endif
20ef40cf
GA
1926 s++;
1927 goto reswitch;
1928
6224f72b 1929 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1930 forbid_setid('I', FALSE);
bd61b366 1931 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1932 argc--,argv++;
1933 }
6224f72b 1934 if (s && *s) {
0df16ed7 1935 STRLEN len = strlen(s);
55b4bc1c 1936 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1937 }
1938 else
a67e862a 1939 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1940 break;
6224f72b 1941 case 'S':
f20b2998 1942 forbid_setid('S', FALSE);
6224f72b
GS
1943 dosearch = TRUE;
1944 s++;
1945 goto reswitch;
1946 case 'V':
7edfd0ef
NC
1947 {
1948 SV *opts_prog;
1949
7edfd0ef 1950 if (*++s != ':') {
37ca4a5b 1951 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1952 }
1953 else {
1954 ++s;
1955 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1956 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1957 0, s, 0);
1958 s += strlen(s);
1959 }
37ca4a5b 1960 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1961 /* don't look for script or read stdin */
1962 scriptname = BIT_BUCKET;
1963 goto reswitch;
6224f72b 1964 }
6224f72b 1965 case 'x':
737c24fc 1966 doextract = TRUE;
6224f72b 1967 s++;
304334da 1968 if (*s)
f4c556ac 1969 cddir = s;
6224f72b
GS
1970 break;
1971 case 0:
1972 break;
1973 case '-':
1974 if (!*++s || isSPACE(*s)) {
1975 argc--,argv++;
1976 goto switch_end;
1977 }
ee8bc8b7
NC
1978 /* catch use of gnu style long options.
1979 Both of these exit immediately. */
1980 if (strEQ(s, "version"))
1981 minus_v();
1982 if (strEQ(s, "help"))
1983 usage();
6224f72b 1984 s--;
924ba076 1985 /* FALLTHROUGH */
6224f72b 1986 default:
cea2e8a9 1987 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1988 }
1989 }
c7030b81
NC
1990 }
1991
6224f72b 1992 switch_end:
54310121 1993
c7030b81
NC
1994 {
1995 char *s;
1996
f675dbe5
CB
1997 if (
1998#ifndef SECURE_INTERNAL_GETENV
284167a5 1999 !TAINTING_get &&
f675dbe5 2000#endif
cf756827 2001 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2002 {
74288ac8
GS
2003 while (isSPACE(*s))
2004 s++;
317ea90d 2005 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2006#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2007 /* silently ignore */
dc6d7f5c 2008#elif defined(NO_TAINT_SUPPORT)
3231f579 2009 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2010 "Cowardly refusing to run with -t or -T flags");
2011#else
22f7c9c9 2012 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2013 TAINTING_set(TRUE);
2014 TAINT_WARN_set(FALSE);
2015#endif
317ea90d 2016 }
74288ac8 2017 else {
bd61b366 2018 char *popt_copy = NULL;
74288ac8 2019 while (s && *s) {
54913509 2020 const char *d;
74288ac8
GS
2021 while (isSPACE(*s))
2022 s++;
2023 if (*s == '-') {
2024 s++;
2025 if (isSPACE(*s))
2026 continue;
2027 }
4ea8f8fb 2028 d = s;
74288ac8
GS
2029 if (!*s)
2030 break;
2b622f1a 2031 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2032 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2033 while (++s && *s) {
2034 if (isSPACE(*s)) {
cf756827 2035 if (!popt_copy) {
bfa6c418
NC
2036 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2037 s = popt_copy + (s - d);
2038 d = popt_copy;
cf756827 2039 }
4ea8f8fb
MS
2040 *s++ = '\0';
2041 break;
2042 }
2043 }
1c4db469 2044 if (*d == 't') {
dc6d7f5c 2045#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2046 /* silently ignore */
dc6d7f5c 2047#elif defined(NO_TAINT_SUPPORT)
3231f579 2048 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2049 "Cowardly refusing to run with -t or -T flags");
2050#else
2051 if( !TAINTING_get) {
2052 TAINT_WARN_set(TRUE);
2053 TAINTING_set(TRUE);
317ea90d 2054 }
284167a5 2055#endif
1c4db469 2056 } else {
97bd5664 2057 moreswitches(d);
1c4db469 2058 }
6224f72b 2059 }
6224f72b
GS
2060 }
2061 }
c7030b81 2062 }
a0d0e21e 2063
c29067d7
CH
2064 /* Set $^X early so that it can be used for relocatable paths in @INC */
2065 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2066 assert (!TAINT_get);
c29067d7 2067 TAINT;
e2051532 2068 set_caret_X();
c29067d7
CH
2069 TAINT_NOT;
2070
43c0c913 2071#if defined(USE_SITECUSTOMIZE)
20ef40cf 2072 if (!minus_f) {
43c0c913 2073 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2074 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2075 ie a q() operator with a NUL byte as a the delimiter. This avoids
2076 problems with pathnames containing (say) ' */
43c0c913
NC
2077# ifdef PERL_IS_MINIPERL
2078 AV *const inc = GvAV(PL_incgv);
2079 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2080
2081 if (inc0) {
15870c5c
NC
2082 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2083 it should be reported immediately as a build failure. */
43c0c913
NC
2084 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2085 Perl_newSVpvf(aTHX_
5de87db5 2086 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2087 "do {local $!; -f $f }"
2088 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2089 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2090 }
2091# else
2092 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2093 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2094 if (raw_sitelib) {
2095 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2096 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2097 INCPUSH_CAN_RELOCATE);
2098 const char *const sitelib = SvPVX(sitelib_sv);
2099 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2100 Perl_newSVpvf(aTHX_
2101 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2102 0, SVfARG(sitelib), 0,
2103 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2104 assert (SvREFCNT(sitelib_sv) == 1);
2105 SvREFCNT_dec(sitelib_sv);
2106 }
43c0c913 2107# endif
20ef40cf
GA
2108 }
2109#endif
2110
6224f72b
GS
2111 if (!scriptname)
2112 scriptname = argv[0];
3280af22 2113 if (PL_e_script) {
6224f72b
GS
2114 argc++,argv--;
2115 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2116 }
bd61b366 2117 else if (scriptname == NULL) {
6224f72b
GS
2118#ifdef MSDOS
2119 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2120 moreswitches("h");
6224f72b
GS
2121#endif
2122 scriptname = "-";
2123 }
2124
284167a5 2125 assert (!TAINT_get);
2cace6ac 2126 init_perllib();
6224f72b 2127
a52eba0e 2128 {
f20b2998 2129 bool suidscript = FALSE;
829372d3 2130
8d113837 2131 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2132 if (!rsfp) {
2133 rsfp = PerlIO_stdin();
87606032 2134 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2135 }
6224f72b 2136
b24bc095 2137 validate_suid(rsfp);
6224f72b 2138
64ca3a65 2139#ifndef PERL_MICRO
a52eba0e
NC
2140# if defined(SIGCHLD) || defined(SIGCLD)
2141 {
2142# ifndef SIGCHLD
2143# define SIGCHLD SIGCLD
2144# endif
2145 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2146 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2147 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2148 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2149 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2150 }
0b5b802d 2151 }
a52eba0e 2152# endif
64ca3a65 2153#endif
0b5b802d 2154
737c24fc 2155 if (doextract) {
faef540c 2156
f20b2998 2157 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2158 setuid scripts. */
2159 forbid_setid('x', suidscript);
f20b2998 2160 /* Hence you can't get here if suidscript is true */
faef540c 2161
95670bde
NC
2162 linestr_sv = newSV_type(SVt_PV);
2163 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2164 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2165 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2166 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2167 }
f4c556ac 2168 }
6224f72b 2169
ea726b52 2170 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2171 CvUNIQUE_on(PL_compcv);
2172
eacbb379 2173 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2174
dd69841b
BB
2175 PL_isarev = newHV();
2176
0c4f7ff0 2177 boot_core_PerlIO();
6224f72b 2178 boot_core_UNIVERSAL();
e1a479c5 2179 boot_core_mro();
4a5df386 2180 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2181
2182 if (xsinit)
acfe0abc 2183 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2184#ifndef PERL_MICRO
739a0b84 2185#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2186 init_os_extras();
6224f72b 2187#endif
64ca3a65 2188#endif
6224f72b 2189
29209bc5 2190#ifdef USE_SOCKS
1b9c9cf5
DH
2191# ifdef HAS_SOCKS5_INIT
2192 socks5_init(argv[0]);
2193# else
29209bc5 2194 SOCKSinit(argv[0]);
1b9c9cf5 2195# endif
ac27b0f5 2196#endif
29209bc5 2197
6224f72b
GS
2198 init_predump_symbols();
2199 /* init_postdump_symbols not currently designed to be called */
2200 /* more than once (ENV isn't cleared first, for example) */
2201 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2202 if (!PL_do_undump)
6224f72b
GS
2203 init_postdump_symbols(argc,argv,env);
2204
27da23d5
JH
2205 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2206 * or explicitly in some platforms.
085a54d9 2207 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2208 * look like the user wants to use UTF-8. */
a0fd4948 2209#if defined(__SYMBIAN32__)
27da23d5
JH
2210 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2211#endif
e27b5b51 2212# ifndef PERL_IS_MINIPERL
06e66572
JH
2213 if (PL_unicode) {
2214 /* Requires init_predump_symbols(). */
a05d7ebb 2215 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2216 IO* io;
2217 PerlIO* fp;
2218 SV* sv;
2219
a05d7ebb 2220 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2221 * and the default open disciplines. */
a05d7ebb
JH
2222 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2223 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2224 (fp = IoIFP(io)))
2225 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2226 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2227 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2228 (fp = IoOFP(io)))
2229 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2230 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2231 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2232 (fp = IoOFP(io)))
2233 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2234 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2235 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2236 SVt_PV)))) {
a05d7ebb
JH
2237 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2238 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2239 if (in) {
2240 if (out)
76f68e9b 2241 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2242 else
76f68e9b 2243 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2244 }
2245 else if (out)
76f68e9b 2246 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2247 SvSETMAGIC(sv);
2248 }
b310b053
JH
2249 }
2250 }
e27b5b51 2251#endif
b310b053 2252
c7030b81
NC
2253 {
2254 const char *s;
4ffa73a3
JH
2255 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2256 if (strEQ(s, "unsafe"))
2257 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2258 else if (strEQ(s, "safe"))
2259 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2260 else
2261 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2262 }
c7030b81 2263 }
4ffa73a3 2264
81d86705 2265
87606032 2266 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2267 SvREFCNT_dec(linestr_sv);
95670bde 2268
219f7226 2269 PL_subname = newSVpvs("main");
6224f72b 2270
5486870f
DM
2271 if (add_read_e_script)
2272 filter_add(read_e_script, NULL);
2273
6224f72b
GS
2274 /* now parse the script */
2275
93189314 2276 SETERRNO(0,SS_NORMAL);
28ac2b49 2277 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2278 if (PL_minus_c)
cea2e8a9 2279 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2280 else {
cea2e8a9 2281 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2282 PL_origfilename);
6224f72b
GS
2283 }
2284 }
57843af0 2285 CopLINE_set(PL_curcop, 0);
03d9f026 2286 SET_CURSTASH(PL_defstash);
3280af22
NIS
2287 if (PL_e_script) {
2288 SvREFCNT_dec(PL_e_script);
a0714e2c 2289 PL_e_script = NULL;
6224f72b
GS
2290 }
2291
3280af22 2292 if (PL_do_undump)
6224f72b
GS
2293 my_unexec();
2294
57843af0
GS
2295 if (isWARN_ONCE) {
2296 SAVECOPFILE(PL_curcop);
2297 SAVECOPLINE(PL_curcop);
3280af22 2298 gv_check(PL_defstash);
57843af0 2299 }
6224f72b
GS
2300
2301 LEAVE;
2302 FREETMPS;
2303
2304#ifdef MYMALLOC
f6a607bc
RGS
2305 {
2306 const char *s;
96e440d2
JH
2307 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2308 dump_mstats("after compilation:");
f6a607bc 2309 }
6224f72b
GS
2310#endif
2311
2312 ENTER;
febb3a6d 2313 PL_restartjmpenv = NULL;
3280af22 2314 PL_restartop = 0;
312caa8e 2315 return NULL;
6224f72b
GS
2316}
2317
954c1994
GS
2318/*
2319=for apidoc perl_run
2320
2321Tells a Perl interpreter to run. See L<perlembed>.
2322
2323=cut
2324*/
2325
6224f72b 2326int
0cb96387 2327perl_run(pTHXx)
6224f72b 2328{
6224f72b 2329 I32 oldscope;
14dd3ad8 2330 int ret = 0;
db36c5a1 2331 dJMPENV;
6224f72b 2332
7918f24d
NC
2333 PERL_ARGS_ASSERT_PERL_RUN;
2334#ifndef MULTIPLICITY
ed6c66dd 2335 PERL_UNUSED_ARG(my_perl);
7918f24d 2336#endif
9d4ba2ae 2337
3280af22 2338 oldscope = PL_scopestack_ix;
96e176bf
CL
2339#ifdef VMS
2340 VMSISH_HUSHED = 0;
2341#endif
6224f72b 2342
14dd3ad8 2343 JMPENV_PUSH(ret);
6224f72b
GS
2344 switch (ret) {
2345 case 1:
2346 cxstack_ix = -1; /* start context stack again */
312caa8e 2347 goto redo_body;
14dd3ad8 2348 case 0: /* normal completion */
14dd3ad8
GS
2349 redo_body:
2350 run_body(oldscope);
924ba076 2351 /* FALLTHROUGH */
14dd3ad8 2352 case 2: /* my_exit() */
3280af22 2353 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2354 LEAVE;
2355 FREETMPS;
03d9f026 2356 SET_CURSTASH(PL_defstash);
3a1ee7e8 2357 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2358 PL_endav && !PL_minus_c) {
ca7b837b 2359 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2360 call_list(oldscope, PL_endav);
9ebf26ad 2361 }
6224f72b
GS
2362#ifdef MYMALLOC
2363 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2364 dump_mstats("after execution: ");
2365#endif
37038d91 2366 ret = STATUS_EXIT;
14dd3ad8 2367 break;
6224f72b 2368 case 3:
312caa8e
CS
2369 if (PL_restartop) {
2370 POPSTACK_TO(PL_mainstack);
2371 goto redo_body;
6224f72b 2372 }
5637ef5b 2373 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2374 FREETMPS;
14dd3ad8
GS
2375 ret = 1;
2376 break;
6224f72b
GS
2377 }
2378
14dd3ad8
GS
2379 JMPENV_POP;
2380 return ret;
312caa8e
CS
2381}
2382
dd374669 2383STATIC void
14dd3ad8
GS
2384S_run_body(pTHX_ I32 oldscope)
2385{
d3b97530
DM
2386 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2387 PL_sawampersand ? "Enabling" : "Omitting",
2388 (unsigned int)(PL_sawampersand)));
6224f72b 2389
3280af22 2390 if (!PL_restartop) {
cf2782cd 2391#ifdef DEBUGGING
f0e3f042
CS
2392 if (DEBUG_x_TEST || DEBUG_B_TEST)
2393 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2394 if (!DEBUG_q_TEST)
2395 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2396#endif
6224f72b 2397
3280af22 2398 if (PL_minus_c) {
bf49b057 2399 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2400 my_exit(0);
2401 }
3280af22 2402 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2403 PL_DBsingle_iv = 1;
9ebf26ad 2404 if (PL_initav) {
ca7b837b 2405 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2406 call_list(oldscope, PL_initav);
9ebf26ad 2407 }
f1fac472 2408#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2409 if (PL_main_root && PL_main_root->op_slabbed)
2410 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2411#endif
6224f72b
GS
2412 }
2413
2414 /* do it */
2415
ca7b837b 2416 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2417
3280af22 2418 if (PL_restartop) {
febb3a6d 2419 PL_restartjmpenv = NULL;
533c011a 2420 PL_op = PL_restartop;
3280af22 2421 PL_restartop = 0;
cea2e8a9 2422 CALLRUNOPS(aTHX);
6224f72b 2423 }
3280af22
NIS
2424 else if (PL_main_start) {
2425 CvDEPTH(PL_main_cv) = 1;
533c011a 2426 PL_op = PL_main_start;
cea2e8a9 2427 CALLRUNOPS(aTHX);
6224f72b 2428 }
f6b3007c 2429 my_exit(0);
e5964223 2430 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2431}
2432
954c1994 2433/*
ccfc67b7
JH
2434=head1 SV Manipulation Functions
2435
954c1994
GS
2436=for apidoc p||get_sv
2437
64ace3f8 2438Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2439C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2440Perl variable does not exist then it will be created. If C<flags> is zero
2441and the variable does not exist then NULL is returned.
954c1994
GS
2442
2443=cut
2444*/
2445
6224f72b 2446SV*
64ace3f8 2447Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2448{
2449 GV *gv;
7918f24d
NC
2450
2451 PERL_ARGS_ASSERT_GET_SV;
2452
64ace3f8 2453 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2454 if (gv)
2455 return GvSV(gv);
a0714e2c 2456 return NULL;
6224f72b
GS
2457}
2458
954c1994 2459/*
ccfc67b7
JH
2460=head1 Array Manipulation Functions
2461
954c1994
GS
2462=for apidoc p||get_av
2463
f0b90de1
SF
2464Returns the AV of the specified Perl global or package array with the given
2465name (so it won't work on lexical variables). C<flags> are passed
72d33970 2466to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2467Perl variable does not exist then it will be created. If C<flags> is zero
2468and the variable does not exist then NULL is returned.
954c1994 2469
f0b90de1
SF
2470Perl equivalent: C<@{"$name"}>.
2471
954c1994
GS
2472=cut
2473*/
2474
6224f72b 2475AV*
cbfd0a87 2476Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2477{
cbfd0a87 2478 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2479
2480 PERL_ARGS_ASSERT_GET_AV;
2481
cbfd0a87 2482 if (flags)
6224f72b
GS
2483 return GvAVn(gv);
2484 if (gv)
2485 return GvAV(gv);
7d49f689 2486 return NULL;
6224f72b
GS
2487}
2488
954c1994 2489/*
ccfc67b7
JH
2490=head1 Hash Manipulation Functions
2491
954c1994
GS
2492=for apidoc p||get_hv
2493
6673a63c 2494Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2495C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2496Perl variable does not exist then it will be created. If C<flags> is zero
2497and the variable does not exist then NULL is returned.
954c1994
GS
2498
2499=cut
2500*/
2501
6224f72b 2502HV*
6673a63c 2503Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2504{
6673a63c 2505 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2506
2507 PERL_ARGS_ASSERT_GET_HV;
2508
6673a63c 2509 if (flags)
a0d0e21e
LW
2510 return GvHVn(gv);
2511 if (gv)
2512 return GvHV(gv);
5c284bb0 2513 return NULL;
a0d0e21e
LW
2514}
2515
954c1994 2516/*
ccfc67b7
JH
2517=head1 CV Manipulation Functions
2518
780a5241
NC
2519=for apidoc p||get_cvn_flags
2520
2521Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2522C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2523exist then it will be declared (which has the same effect as saying
2524C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2525then NULL is returned.
2526
954c1994
GS
2527=for apidoc p||get_cv
2528
780a5241 2529Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2530
2531=cut
2532*/
2533
a0d0e21e 2534CV*
780a5241 2535Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2536{
780a5241 2537 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2538
2539 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2540
334dda80
FC
2541 /* XXX this is probably not what they think they're getting.
2542 * It has the same effect as "sub name;", i.e. just a forward
2543 * declaration! */
780a5241 2544 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2545 return newSTUB(gv,0);
780a5241 2546 }
a0d0e21e 2547 if (gv)
8ebc5c01 2548 return GvCVu(gv);
601f1833 2549 return NULL;
a0d0e21e
LW
2550}
2551
2c67934f
NC
2552/* Nothing in core calls this now, but we can't replace it with a macro and
2553 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2554CV*
2555Perl_get_cv(pTHX_ const char *name, I32 flags)
2556{
7918f24d
NC
2557 PERL_ARGS_ASSERT_GET_CV;
2558
780a5241
NC
2559 return get_cvn_flags(name, strlen(name), flags);
2560}
2561
79072805
LW
2562/* Be sure to refetch the stack pointer after calling these routines. */
2563
954c1994 2564/*
ccfc67b7
JH
2565
2566=head1 Callback Functions
2567
954c1994
GS
2568=for apidoc p||call_argv
2569
f0b90de1 2570Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2571with C<argv> (a NULL-terminated array of strings) as arguments. See
2572L<perlcall>.
f0b90de1
SF
2573
2574Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2575
2576=cut
2577*/
2578
a0d0e21e 2579I32
5aaab254 2580Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2581
8ac85365
NIS
2582 /* See G_* flags in cop.h */
2583 /* null terminated arg list */
8990e307 2584{
a0d0e21e 2585 dSP;
8990e307 2586
7918f24d
NC
2587 PERL_ARGS_ASSERT_CALL_ARGV;
2588
924508f0 2589 PUSHMARK(SP);
a0d0e21e 2590 if (argv) {
8990e307 2591 while (*argv) {
6e449a3a 2592 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2593 argv++;
2594 }
a0d0e21e 2595 PUTBACK;
8990e307 2596 }
864dbfa3 2597 return call_pv(sub_name, flags);
8990e307
LW
2598}
2599
954c1994
GS
2600/*
2601=for apidoc p||call_pv
2602
2603Performs a callback to the specified Perl sub. See L<perlcall>.
2604
2605=cut
2606*/
2607
a0d0e21e 2608I32
864dbfa3 2609Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2610 /* name of the subroutine */
2611 /* See G_* flags in cop.h */
a0d0e21e 2612{
7918f24d
NC
2613 PERL_ARGS_ASSERT_CALL_PV;
2614
0da0e728 2615 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2616}
2617
954c1994
GS
2618/*
2619=for apidoc p||call_method
2620
2621Performs a callback to the specified Perl method. The blessed object must
2622be on the stack. See L<perlcall>.
2623
2624=cut
2625*/
2626
a0d0e21e 2627I32
864dbfa3 2628Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2629 /* name of the subroutine */
2630 /* See G_* flags in cop.h */
a0d0e21e 2631{
46ca9bac 2632 STRLEN len;
c106c2be 2633 SV* sv;
7918f24d
NC
2634 PERL_ARGS_ASSERT_CALL_METHOD;
2635
46ca9bac 2636 len = strlen(methname);
c106c2be
RZ
2637 sv = flags & G_METHOD_NAMED
2638 ? sv_2mortal(newSVpvn_share(methname, len,0))
2639 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2640
c106c2be 2641 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2642}
2643
2644/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2645/*
2646=for apidoc p||call_sv
2647
2648Performs a callback to the Perl sub whose name is in the SV. See
2649L<perlcall>.
2650
2651=cut
2652*/
2653
a0d0e21e 2654I32
001d637e 2655Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2656 /* See G_* flags in cop.h */
a0d0e21e 2657{
27da23d5 2658 dVAR; dSP;
a0d0e21e 2659 LOGOP myop; /* fake syntax tree node */
b46e009d 2660 METHOP method_op;
aa689395 2661 I32 oldmark;
8ea43dc8 2662 VOL I32 retval = 0;
a0d0e21e 2663 I32 oldscope;
54310121 2664 bool oldcatch = CATCH_GET;
6224f72b 2665 int ret;
c4420975 2666 OP* const oldop = PL_op;
db36c5a1 2667 dJMPENV;
1e422769 2668
7918f24d
NC
2669 PERL_ARGS_ASSERT_CALL_SV;
2670
a0d0e21e
LW
2671 if (flags & G_DISCARD) {
2672 ENTER;
2673 SAVETMPS;
2674 }
2f8edad0
NC
2675 if (!(flags & G_WANT)) {
2676 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2677 */
2678 flags |= G_SCALAR;
2679 }
a0d0e21e 2680
aa689395 2681 Zero(&myop, 1, LOGOP);
f51d4af5 2682 if (!(flags & G_NOARGS))
aa689395 2683 myop.op_flags |= OPf_STACKED;
4f911530 2684 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2685 SAVEOP();
533c011a 2686 PL_op = (OP*)&myop;
aa689395 2687
3280af22 2688 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2689 if (!(flags & G_METHOD_NAMED))
2690 *++PL_stack_sp = sv;
aa689395 2691 oldmark = TOPMARK;
3280af22 2692 oldscope = PL_scopestack_ix;
a0d0e21e 2693
3280af22 2694 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2695 /* Handle first BEGIN of -d. */
3280af22 2696 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2697 /* Try harder, since this may have been a sighandler, thus
2698 * curstash may be meaningless. */
ea726b52 2699 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2700 && !(flags & G_NODEBUG))
5ff48db8 2701 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2702
c106c2be 2703 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2704 Zero(&method_op, 1, METHOP);
2705 method_op.op_next = (OP*)&myop;
2706 PL_op = (OP*)&method_op;
c106c2be 2707 if ( flags & G_METHOD_NAMED ) {
b46e009d 2708 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2709 method_op.op_type = OP_METHOD_NAMED;
2710 method_op.op_u.op_meth_sv = sv;
c106c2be 2711 } else {
b46e009d 2712 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2713 method_op.op_type = OP_METHOD;
c106c2be
RZ
2714 }
2715 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2716 myop.op_type = OP_ENTERSUB;
968b3946
GS
2717 }
2718
312caa8e 2719 if (!(flags & G_EVAL)) {
0cdb2077 2720 CATCH_SET(TRUE);
d6f07c05 2721 CALL_BODY_SUB((OP*)&myop);
312caa8e 2722 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2723 CATCH_SET(oldcatch);
312caa8e
CS
2724 }
2725 else {
d78bda3d 2726 myop.op_other = (OP*)&myop;
3280af22 2727 PL_markstack_ptr--;
edb2152a 2728 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2729 PL_markstack_ptr++;
a0d0e21e 2730
14dd3ad8 2731 JMPENV_PUSH(ret);
edb2152a 2732
6224f72b
GS
2733 switch (ret) {
2734 case 0:
14dd3ad8 2735 redo_body:
d6f07c05 2736 CALL_BODY_SUB((OP*)&myop);
312caa8e 2737 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2738 if (!(flags & G_KEEPERR)) {
ab69dbc2 2739 CLEAR_ERRSV();
8433848b 2740 }
a0d0e21e 2741 break;
6224f72b 2742 case 1:
f86702cc 2743 STATUS_ALL_FAILURE;
924ba076 2744 /* FALLTHROUGH */
6224f72b 2745 case 2:
a0d0e21e 2746 /* my_exit() was called */
03d9f026 2747 SET_CURSTASH(PL_defstash);
a0d0e21e 2748 FREETMPS;
14dd3ad8 2749 JMPENV_POP;
f86702cc 2750 my_exit_jump();
e5964223 2751 NOT_REACHED; /* NOTREACHED */
6224f72b 2752 case 3:
3280af22 2753 if (PL_restartop) {
febb3a6d 2754 PL_restartjmpenv = NULL;
533c011a 2755 PL_op = PL_restartop;
3280af22 2756 PL_restartop = 0;
312caa8e 2757 goto redo_body;
a0d0e21e 2758 }
3280af22 2759 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2760 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2761 retval = 0;
2762 else {
2763 retval = 1;
3280af22 2764 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2765 }
312caa8e 2766 break;
a0d0e21e 2767 }
a0d0e21e 2768
edb2152a
NC
2769 if (PL_scopestack_ix > oldscope)
2770 delete_eval_scope();
14dd3ad8 2771 JMPENV_POP;
a0d0e21e 2772 }
1e422769 2773
a0d0e21e 2774 if (flags & G_DISCARD) {
3280af22 2775 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2776 retval = 0;
2777 FREETMPS;
2778 LEAVE;
2779 }
533c011a 2780 PL_op = oldop;
a0d0e21e
LW
2781 return retval;
2782}
2783
6e72f9df 2784/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2785
954c1994
GS
2786/*
2787=for apidoc p||eval_sv
2788
72d33970
FC
2789Tells Perl to C<eval> the string in the SV. It supports the same flags
2790as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2791
2792=cut
2793*/
2794
a0d0e21e 2795I32
864dbfa3 2796Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2797
8ac85365 2798 /* See G_* flags in cop.h */
a0d0e21e 2799{
97aff369 2800 dVAR;
924508f0 2801 dSP;
a0d0e21e 2802 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2803 VOL I32 oldmark = SP - PL_stack_base;
2804 VOL I32 retval = 0;
6224f72b 2805 int ret;
c4420975 2806 OP* const oldop = PL_op;
db36c5a1 2807 dJMPENV;
84902520 2808
7918f24d
NC
2809 PERL_ARGS_ASSERT_EVAL_SV;
2810
4633a7c4
LW
2811 if (flags & G_DISCARD) {
2812 ENTER;
2813 SAVETMPS;
2814 }
2815
462e5cf6 2816 SAVEOP();
533c011a 2817 PL_op = (OP*)&myop;
5ff48db8 2818 Zero(&myop, 1, UNOP);
3280af22
NIS
2819 EXTEND(PL_stack_sp, 1);
2820 *++PL_stack_sp = sv;
79072805 2821
4633a7c4
LW
2822 if (!(flags & G_NOARGS))
2823 myop.op_flags = OPf_STACKED;
6e72f9df 2824 myop.op_type = OP_ENTEREVAL;
4f911530 2825 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2826 if (flags & G_KEEPERR)
2827 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2828
2829 if (flags & G_RE_REPARSING)
2830 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2831
dedbcade
DM
2832 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2833 * before a PUSHEVAL, which corrupts the stack after a croak */
2834 TAINT_PROPER("eval_sv()");
2835
14dd3ad8 2836 JMPENV_PUSH(ret);
6224f72b
GS
2837 switch (ret) {
2838 case 0:
14dd3ad8 2839 redo_body:
2ba65d5f
DM
2840 if (PL_op == (OP*)(&myop)) {
2841 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2842 if (!PL_op)
2843 goto fail; /* failed in compilation */
2844 }
4aca2f62 2845 CALLRUNOPS(aTHX);
312caa8e 2846 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2847 if (!(flags & G_KEEPERR)) {
ab69dbc2 2848 CLEAR_ERRSV();
8433848b 2849 }
4633a7c4 2850 break;
6224f72b 2851 case 1:
f86702cc 2852 STATUS_ALL_FAILURE;
924ba076 2853 /* FALLTHROUGH */
6224f72b 2854 case 2:
4633a7c4 2855 /* my_exit() was called */
03d9f026 2856 SET_CURSTASH(PL_defstash);
4633a7c4 2857 FREETMPS;
14dd3ad8 2858 JMPENV_POP;
f86702cc 2859 my_exit_jump();
e5964223 2860 NOT_REACHED; /* NOTREACHED */
6224f72b 2861 case 3:
3280af22 2862 if (PL_restartop) {
febb3a6d 2863 PL_restartjmpenv = NULL;
533c011a 2864 PL_op = PL_restartop;
3280af22 2865 PL_restartop = 0;
312caa8e 2866 goto redo_body;
4633a7c4 2867 }
4aca2f62 2868 fail:
3280af22 2869 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2870 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2871 retval = 0;
2872 else {
2873 retval = 1;
3280af22 2874 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2875 }
312caa8e 2876 break;
4633a7c4
LW
2877 }
2878
14dd3ad8 2879 JMPENV_POP;
4633a7c4 2880 if (flags & G_DISCARD) {
3280af22 2881 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2882 retval = 0;
2883 FREETMPS;
2884 LEAVE;
2885 }
533c011a 2886 PL_op = oldop;
4633a7c4
LW
2887 return retval;
2888}
2889
954c1994
GS
2890/*
2891=for apidoc p||eval_pv
2892
422791e4 2893Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2894
2895=cut
2896*/
2897
137443ea 2898SV*
864dbfa3 2899Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2900{
137443ea
PP
2901 SV* sv = newSVpv(p, 0);
2902
7918f24d
NC
2903 PERL_ARGS_ASSERT_EVAL_PV;
2904
864dbfa3 2905 eval_sv(sv, G_SCALAR);
137443ea
PP
2906 SvREFCNT_dec(sv);
2907
ed1786ad
DD
2908 {
2909 dSP;
2910 sv = POPs;
2911 PUTBACK;
2912 }
137443ea 2913
eed484f9
DD
2914 /* just check empty string or undef? */
2915 if (croak_on_error) {
2916 SV * const errsv = ERRSV;
2917 if(SvTRUE_NN(errsv))
2918 /* replace with croak_sv? */
2919 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2920 }
137443ea
PP
2921
2922 return sv;
2923}
2924
4633a7c4
LW
2925/* Require a module. */
2926
954c1994 2927/*
ccfc67b7
JH
2928=head1 Embedding Functions
2929
954c1994
GS
2930=for apidoc p||require_pv
2931
7d3fb230
BS
2932Tells Perl to C<require> the file named by the string argument. It is
2933analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2934implemented that way; consider using load_module instead.
954c1994 2935
7d3fb230 2936=cut */
954c1994 2937
4633a7c4 2938void
864dbfa3 2939Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2940{
d3acc0f7 2941 dSP;
97aff369 2942 SV* sv;
7918f24d
NC
2943
2944 PERL_ARGS_ASSERT_REQUIRE_PV;
2945
e788e7d3 2946 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2947 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2948 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2949 POPSTACK;
79072805
LW
2950}
2951
76e3520e 2952STATIC void
b6f82619 2953S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2954{
ab821d7f 2955 /* This message really ought to be max 23 lines.
75c72d73 2956 * Removed -h because the user already knows that option. Others? */
fb73857a 2957
1566c39d
NC
2958 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2959 minimum of 509 character string literals. */
27da23d5 2960 static const char * const usage_msg[] = {
1566c39d
NC
2961" -0[octal] specify record separator (\\0, if no argument)\n"
2962" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2963" -C[number/list] enables the listed Unicode features\n"
2964" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2965" -d[:debugger] run program under debugger\n"
2966" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2967" -e program one line of program (several -e's allowed, omit programfile)\n"
2968" -E program like -e, but enables all optional features\n"
2969" -f don't do $sitelib/sitecustomize.pl at startup\n"
2970" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2971" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2972" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2973" -l[octal] enable line ending processing, specifies line terminator\n"
2974" -[mM][-]module execute \"use/no module...\" before executing program\n"
2975" -n assume \"while (<>) { ... }\" loop around program\n"
2976" -p assume loop like -n but print line also, like sed\n"
2977" -s enable rudimentary parsing for switches after programfile\n"
2978" -S look for programfile using PATH environment variable\n",
2979" -t enable tainting warnings\n"
2980" -T enable tainting checks\n"
2981" -u dump core after parsing program\n"
2982" -U allow unsafe operations\n"
2983" -v print version, patchlevel and license\n"
2984" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2985" -w enable many useful warnings\n"
1566c39d
NC
2986" -W enable all warnings\n"
2987" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2988" -X disable all warnings\n"
2989" \n"
2990"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2991NULL
2992};
27da23d5 2993 const char * const *p = usage_msg;
1566c39d 2994 PerlIO *out = PerlIO_stdout();
fb73857a 2995
1566c39d
NC
2996 PerlIO_printf(out,
2997 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2998 PL_origargv[0]);
fb73857a 2999 while (*p)
1566c39d 3000 PerlIO_puts(out, *p++);
b6f82619 3001 my_exit(0);
4633a7c4
LW
3002}
3003
b4ab917c
DM
3004/* convert a string of -D options (or digits) into an int.
3005 * sets *s to point to the char after the options */
3006
3007#ifdef DEBUGGING
3008int
e1ec3a88 3009Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3010{
27da23d5 3011 static const char * const usage_msgd[] = {
651b8f1a
NC
3012 " Debugging flag values: (see also -d)\n"
3013 " p Tokenizing and parsing (with v, displays parse stack)\n"
3014 " s Stack snapshots (with v, displays all stacks)\n"
3015 " l Context (loop) stack processing\n"
3016 " t Trace execution\n"
3017 " o Method and overloading resolution\n",
3018 " c String/numeric conversions\n"
3019 " P Print profiling info, source file input state\n"
3020 " m Memory and SV allocation\n"
3021 " f Format processing\n"
3022 " r Regular expression parsing and execution\n"
3023 " x Syntax tree dump\n",
3024 " u Tainting checks\n"
3025 " H Hash dump -- usurps values()\n"
3026 " X Scratchpad allocation\n"
3027 " D Cleaning up\n"
56967202 3028 " S Op slab allocation\n"
651b8f1a
NC
3029 " T Tokenising\n"
3030 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3031 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3032 " v Verbose: use in conjunction with other flags\n"
3033 " C Copy On Write\n"
3034 " A Consistency checks on internal structures\n"
3035 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3036 " M trace smart match resolution\n"
3037 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3038 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3039 NULL
3040 };
b4ab917c 3041 int i = 0;
7918f24d
NC
3042
3043 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3044
b4ab917c
DM
3045 if (isALPHA(**s)) {
3046 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3047 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3048
0eb30aeb 3049 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3050 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3051 if (d)
3052 i |= 1 << (d - debopts);
3053 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3054 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3055 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3056 }
3057 }
e6e64d9b 3058 else if (isDIGIT(**s)) {
96e440d2
JH
3059 const char* e;
3060 i = grok_atou(*s, &e);
3061 if (e)
3062 *s = e;
0eb30aeb 3063 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3064 }
ddcf8bc1 3065 else if (givehelp) {
06e869a4 3066 const char *const *p = usage_msgd;
651b8f1a 3067 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3068 }
b4ab917c
DM
3069 return i;
3070}
3071#endif
3072
79072805
LW
3073/* This routine handles any switches that can be given during run */
3074
c7030b81
NC
3075const char *
3076Perl_moreswitches(pTHX_ const char *s)
79072805 3077{
27da23d5 3078 dVAR;
84c133a0 3079 UV rschar;
0544e6df 3080 const char option = *s; /* used to remember option in -m/-M code */
79072805 3081
7918f24d
NC
3082 PERL_ARGS_ASSERT_MORESWITCHES;
3083
79072805
LW
3084 switch (*s) {
3085 case '0':
a863c7d1 3086 {
f2095865 3087 I32 flags = 0;
a3b680e6 3088 STRLEN numlen;
f2095865
JH
3089
3090 SvREFCNT_dec(PL_rs);
3091 if (s[1] == 'x' && s[2]) {
a3b680e6 3092 const char *e = s+=2;
f2095865
JH
3093 U8 *tmps;
3094
a3b680e6
AL
3095 while (*e)
3096 e++;
f2095865
JH
3097 numlen = e - s;
3098 flags = PERL_SCAN_SILENT_ILLDIGIT;
3099 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3100 if (s + numlen < e) {
3101 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3102 numlen = 0;
3103 s--;
3104 }
396482e1 3105 PL_rs = newSVpvs("");
c5661c80 3106 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3107 tmps = (U8*)SvPVX(PL_rs);
3108 uvchr_to_utf8(tmps, rschar);
3109 SvCUR_set(PL_rs, UNISKIP(rschar));
3110 SvUTF8_on(PL_rs);
3111 }
3112 else {
3113 numlen = 4;
3114 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3115 if (rschar & ~((U8)~0))
3116 PL_rs = &PL_sv_undef;
3117 else if (!rschar && numlen >= 2)
396482e1 3118 PL_rs = newSVpvs("");
f2095865
JH
3119 else {
3120 char ch = (char)rschar;
3121 PL_rs = newSVpvn(&ch, 1);
3122 }
3123 }
64ace3f8 3124 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3125 return s + numlen;
a863c7d1 3126 }
46487f74 3127 case 'C':
a05d7ebb 3128 s++;
dd374669 3129 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3130 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3131 PL_utf8cache = -1;
46487f74 3132 return s;
2304df62 3133 case 'F':
5fc691f1 3134 PL_minus_a = TRUE;
3280af22 3135 PL_minus_F = TRUE;
24ffa309 3136 PL_minus_n = TRUE;
ebce5377
RGS
3137 PL_splitstr = ++s;
3138 while (*s && !isSPACE(*s)) ++s;
e49e380e 3139 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3140 return s;
79072805 3141 case 'a':
3280af22 3142 PL_minus_a = TRUE;
24ffa309 3143 PL_minus_n = TRUE;
79072805
LW
3144 s++;
3145 return s;
3146 case 'c':
3280af22 3147 PL_minus_c = TRUE;
79072805
LW
3148 s++;
3149 return s;
3150 case 'd':
f20b2998 3151 forbid_setid('d', FALSE);
4633a7c4 3152 s++;
2cbb2ee1
RGS
3153
3154 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3155 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3156 ++s;
3157 my_setenv("PERL5DB_THREADED", "1");
3158 }
3159
70c94a19
RR
3160 /* The following permits -d:Mod to accepts arguments following an =
3161 in the fashion that -MSome::Mod does. */
3162 if (*s == ':' || *s == '=') {
b19934fb
NC
3163 const char *start;
3164 const char *end;
3165 SV *sv;
3166
3167 if (*++s == '-') {
3168 ++s;
3169 sv = newSVpvs("no Devel::");
3170 } else {
3171 sv = newSVpvs("use Devel::");
3172 }
3173
3174 start = s;
3175 end = s + strlen(s);
f85893a1 3176
b19934fb 3177 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3178 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3179 if (*s != '=')
f85893a1 3180 sv_catpvn(sv, start, end - start);
70c94a19
RR
3181 else {
3182 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3183 /* Don't use NUL as q// delimiter here, this string goes in the
3184 * environment. */
3185 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3186 }
f85893a1 3187 s = end;
184f32ec 3188 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3189 SvREFCNT_dec(sv);
4633a7c4 3190 }
ed094faf 3191 if (!PL_perldb) {
3280af22 3192 PL_perldb = PERLDB_ALL;
a0d0e21e 3193 init_debugger();
ed094faf 3194 }
79072805
LW
3195 return s;
3196 case 'D':
0453d815 3197 {
79072805 3198#ifdef DEBUGGING
f20b2998 3199 forbid_setid('D', FALSE);
b4ab917c 3200 s++;
dd374669 3201 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3202#else /* !DEBUGGING */
0453d815 3203 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3204 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3205 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3206 for (s++; isWORDCHAR(*s); s++) ;
79072805 3207#endif
79072805 3208 return s;
2b5060ae 3209 NOT_REACHED; /* NOTREACHED */
0453d815 3210 }
4633a7c4 3211 case 'h':
b6f82619 3212 usage();
2b5060ae
DM
3213 NOT_REACHED; /* NOTREACHED */
3214
79072805 3215 case 'i':
43c5f42d 3216 Safefree(PL_inplace);
c030f24b
GH
3217#if defined(__CYGWIN__) /* do backup extension automagically */
3218 if (*(s+1) == '\0') {
c86a4f2e 3219 PL_inplace = savepvs(".bak");
c030f24b
GH
3220 return s+1;
3221 }
3222#endif /* __CYGWIN__ */
5ef5d758 3223 {
d4c19fe8 3224 const char * const start = ++s;
5ef5d758
NC
3225 while (*s && !isSPACE(*s))
3226 ++s;
3227
3228 PL_inplace = savepvn(start, s - start);
3229 }
7b8d334a 3230 if (*s) {
5ef5d758 3231 ++s;
7b8d334a 3232 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3233 s++;
7b8d334a 3234 }
fb73857a 3235 return s;
4e49a025 3236 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3237 forbid_setid('I', FALSE);
fb73857a
PP
3238 ++s;
3239 while (*s && isSPACE(*s))
3240 ++s;
3241 if (*s) {
c7030b81 3242 const char *e, *p;
0df16ed7
GS
3243 p = s;
3244 /* ignore trailing spaces (possibly followed by other switches) */
3245 do {
3246 for (e = p; *e && !isSPACE(*e); e++) ;
3247 p = e;
3248 while (isSPACE(*p))
3249 p++;
3250 } while (*p && *p != '-');
55b4bc1c 3251 incpush(s, e-s,
e28f3139 3252 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3253 s = p;
3254 if (*s == '-')
3255 s++;
79072805
LW
3256 }
3257 else
a67e862a 3258 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3259 return s;
79072805 3260 case 'l':
3280af22 3261 PL_minus_l = TRUE;
79072805 3262 s++;
7889fe52
NIS
3263 if (PL_ors_sv) {
3264 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3265 PL_ors_sv = NULL;
7889fe52 3266 }
79072805 3267 if (isDIGIT(*s)) {
53305cf1 3268 I32 flags = 0;
a3b680e6 3269 STRLEN numlen;
396482e1 3270 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3271 numlen = 3 + (*s == '0');
3272 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3273 s += numlen;
3274 }
3275 else {
8bfdd7d9 3276 if (RsPARA(PL_rs)) {
396482e1 3277 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3278 }
3279 else {
8bfdd7d9 3280 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3281 }
79072805
LW
3282 }
3283 return s;
1a30305b 3284 case 'M':
f20b2998 3285 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3286 /* FALLTHROUGH */
1a30305b 3287 case 'm':
f20b2998 3288 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3289 if (*++s) {
c7030b81 3290 const char *start;
b64cb68c 3291 const char *end;
11343788 3292 SV *sv;
e1ec3a88 3293 const char *use = "use ";
0544e6df 3294 bool colon = FALSE;
a5f75d66 3295 /* -M-foo == 'no foo' */
d0043bd1
NC
3296 /* Leading space on " no " is deliberate, to make both
3297 possibilities the same length. */
3298 if (*s == '-') { use = " no "; ++s; }
3299 sv = newSVpvn(use,4);
a5f75d66 3300 start = s;
1a30305b 3301 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3302 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3303 if( *s++ == ':' ) {
3304 if( *s == ':' )
3305 s++;
3306 else
3307 colon = TRUE;
3308 }
3309 }
3310 if (s == start)
3311 Perl_croak(aTHX_ "Module name required with -%c option",
3312 option);
3313 if (colon)
3314 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3315 "contains single ':'",
63da6837 3316 (int)(s - start), start, option);
b64cb68c 3317 end = s + strlen(s);
c07a80fd 3318 if (*s != '=') {
b64cb68c 3319 sv_catpvn(sv, start, end - start);
0544e6df 3320 if (option == 'm') {
c07a80fd 3321 if (*s != '\0')
cea2e8a9 3322 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3323 sv_catpvs( sv, " ()");
c07a80fd
PP
3324 }
3325 } else {
11343788 3326 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3327 /* Use NUL as q''-delimiter. */
3328 sv_catpvs(sv, " split(/,/,q\0");
3329 ++s;
3330 sv_catpvn(sv, s, end - s);
396482e1 3331 sv_catpvs(sv, "\0)");
c07a80fd 3332 }
b64cb68c 3333 s = end;
29a861e7 3334 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3335 }
3336 else
0544e6df 3337 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3338 return s;
79072805 3339 case 'n':
3280af22 3340 PL_minus_n = TRUE;
79072805
LW
3341 s++;
3342 return s;
3343 case 'p':
3280af22 3344 PL_minus_p = TRUE;
79072805
LW
3345 s++;
3346 return s;
3347 case 's':
f20b2998 3348 forbid_setid('s', FALSE);
3280af22 3349 PL_doswitches = TRUE;
79072805
LW
3350 s++;
3351 return s;
6537fe72 3352 case 't':
27a6968b 3353 case 'T':
dc6d7f5c 3354#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3355 /* silently ignore */
dc6d7f5c 3356#elif defined(NO_TAINT_SUPPORT)
3231f579 3357 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3358 "Cowardly refusing to run with -t or -T flags");
3359#else
3360 if (!TAINTING_get)
27a6968b 3361 TOO_LATE_FOR(*s);
284167a5 3362#endif
6537fe72 3363 s++;
463ee0b2 3364 return s;
79072805 3365 case 'u':
3280af22 3366 PL_do_undump = TRUE;
79072805
LW
3367 s++;
3368 return s;
3369 case 'U':
3280af22 3370 PL_unsafe = TRUE;
79072805
LW
3371 s++;
3372 return s;
3373 case 'v':
c4bc78d9
NC
3374 minus_v();
3375 case 'w':
3376 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3377 PL_dowarn |= G_WARN_ON;
3378 }
3379 s++;
3380 return s;
3381 case 'W':
3382 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3383 if (!specialWARN(PL_compiling.cop_warnings))
3384 PerlMemShared_free(PL_compiling.cop_warnings);
3385 PL_compiling.cop_warnings = pWARN_ALL ;
3386 s++;
3387 return s;
3388 case 'X':
3389 PL_dowarn = G_WARN_ALL_OFF;
3390 if (!specialWARN(PL_compiling.cop_warnings))
3391 PerlMemShared_free(PL_compiling.cop_warnings);
3392 PL_compiling.cop_warnings = pWARN_NONE ;
3393 s++;
3394 return s;
3395 case '*':
3396 case ' ':
3397 while( *s == ' ' )
3398 ++s;
3399 if (s[0] == '-') /* Additional switches on #! line. */
3400 return s+1;
3401 break;
3402 case '-':
3403 case 0:
3404#if defined(WIN32) || !defined(PERL_STRICT_CR)
3405 case '\r':
3406#endif
3407 case '\n':
3408 case '\t':
3409 break;
3410#ifdef ALTERNATE_SHEBANG
3411 case 'S': /* OS/2 needs -S on "extproc" line. */
3412 break;
3413#endif
4bb78d63
CB
3414 case 'e': case 'f': case 'x': case 'E':
3415#ifndef ALTERNATE_SHEBANG
3416 case 'S':
3417#endif
3418 case 'V':
c4bc78d9 3419 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3420 default:
3421 Perl_croak(aTHX_
3422 "Unrecognized switch: -%.1s (-h will show valid options)",s
3423 );
c4bc78d9
NC
3424 }
3425 return NULL;
3426}
3427
3428
3429STATIC void
3430S_minus_v(pTHX)
3431{
fc3381af 3432 PerlIO * PIO_stdout;
46807d8e 3433 {
709aee94
DD
3434 const char * const level_str = "v" PERL_VERSION_STRING;
3435 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3436#ifdef PERL_PATCHNUM
709aee94 3437 SV* level;
23d483e2 3438# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3439 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3440# else
709aee94 3441 static const char num [] = PERL_PATCHNUM;
23d483e2 3442# endif
fc3381af 3443 {
709aee94
DD
3444 const STRLEN num_len = sizeof(num)-1;
3445 /* A very advanced compiler would fold away the strnEQ
3446 and this whole conditional, but most (all?) won't do it.
3447 SV level could also be replaced by with preprocessor
3448 catenation.
3449 */
3450 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3451 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3452 of the interp so it might contain format characters
3453 */
3454 level = newSVpvn(num, num_len);
fc3381af 3455 } else {
709aee94 3456 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3457 }
46807d8e 3458 }
709aee94
DD
3459#else
3460 SV* level = newSVpvn(level_str, level_len);
3461#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3462 PIO_stdout = PerlIO_stdout();
3463 PerlIO_printf(PIO_stdout,
ded326e4
DG
3464 "\nThis is perl " STRINGIFY(PERL_REVISION)
3465 ", version " STRINGIFY(PERL_VERSION)
3466 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3467 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3468 );
709aee94 3469 SvREFCNT_dec_NN(level);
46807d8e 3470 }
fb73857a
PP
3471#if defined(LOCAL_PATCH_COUNT)
3472 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3473 PerlIO_printf(PIO_stdout,
b0e47665
GS
3474 "\n(with %d registered patch%s, "
3475 "see perl -V for more detail)",
bb7a0f54 3476 LOCAL_PATCH_COUNT,
b0e47665 3477 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3478#endif
1a30305b 3479
fc3381af 3480 PerlIO_printf(PIO_stdout,
a6f9dd1e 3481 "\n\nCopyright 1987-2015, Larry Wall\n");
79072805 3482#ifdef MSDOS
fc3381af 3483 PerlIO_printf(PIO_stdout,