This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
make debugging easier in memory allocator code in perl.c and util.c
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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"
7b8dd5f4 36#include "charclass_invlists.h"
378cc40b 37
011f1a1a
JH
38#ifdef NETWARE
39#include "nwutil.h"
011f1a1a
JH
40#endif
41
2aa47728 42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
43# ifdef I_SYSUIO
44# include <sys/uio.h>
45# endif
46
47union control_un {
48 struct cmsghdr cm;
49 char control[CMSG_SPACE(sizeof(int))];
50};
51
2aa47728
NC
52#endif
53
5311654c
JH
54#ifndef HZ
55# ifdef CLK_TCK
56# define HZ CLK_TCK
57# else
58# define HZ 60
59# endif
60#endif
61
7114a2d2 62#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 63char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
64#endif
65
acfe0abc 66static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 67
cc69b689 68#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 69# define validate_suid(rsfp) NOOP
cc69b689 70#else
b24bc095 71# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 72#endif
8d063cd8 73
d6f07c05
AL
74#define CALL_BODY_SUB(myop) \
75 if (PL_op == (myop)) \
139d0ce6 76 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
77 if (PL_op) \
78 CALLRUNOPS(aTHX);
79
80#define CALL_LIST_BODY(cv) \
81 PUSHMARK(PL_stack_sp); \
9a8aa25b 82 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 83
e6827a76 84static void
daa7d858 85S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 86{
27da23d5 87 dVAR;
e6827a76
NC
88 if (!PL_curinterp) {
89 PERL_SET_INTERP(my_perl);
3db8f154 90#if defined(USE_ITHREADS)
e6827a76
NC
91 INIT_THREADS;
92 ALLOC_THREAD_KEY;
93 PERL_SET_THX(my_perl);
94 OP_REFCNT_INIT;
e8570548 95 OP_CHECK_MUTEX_INIT;
71ad1b0c 96 HINTS_REFCNT_INIT;
e6827a76 97 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
98 MUTEX_INIT(&PL_my_ctx_mutex);
99# endif
e6827a76 100 }
c0bce9aa
NC
101#if defined(USE_ITHREADS)
102 else
103#else
104 /* This always happens for non-ithreads */
105#endif
106 {
e6827a76
NC
107 PERL_SET_THX(my_perl);
108 }
109}
06d86050 110
cbec8ebe
DM
111
112/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
113
114void
115Perl_sys_init(int* argc, char*** argv)
116{
4fc0badb 117 dVAR;
7918f24d
NC
118
119 PERL_ARGS_ASSERT_SYS_INIT;
120
cbec8ebe
DM
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
124}
125
126void
127Perl_sys_init3(int* argc, char*** argv, char*** env)
128{
4fc0badb 129 dVAR;
7918f24d
NC
130
131 PERL_ARGS_ASSERT_SYS_INIT3;
132
cbec8ebe
DM
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
137}
138
139void
88772978 140Perl_sys_term(void)
cbec8ebe 141{
4fc0badb 142 dVAR;
bf81751b
DM
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
145 }
cbec8ebe
DM
146}
147
148
32e30700
GS
149#ifdef PERL_IMPLICIT_SYS
150PerlInterpreter *
7766f137
GS
151perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
156{
157 PerlInterpreter *my_perl;
7918f24d
NC
158
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160
9f653bb5 161 /* Newx() needs interpreter, so call malloc() instead */
32e30700 162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 163 S_init_tls_and_interp(my_perl);
32e30700
GS
164 Zero(my_perl, 1, PerlInterpreter);
165 PL_Mem = ipM;
7766f137
GS
166 PL_MemShared = ipMS;
167 PL_MemParse = ipMP;
32e30700
GS
168 PL_Env = ipE;
169 PL_StdIO = ipStd;
170 PL_LIO = ipLIO;
171 PL_Dir = ipD;
172 PL_Sock = ipS;
173 PL_Proc = ipP;
7cb608b5 174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 175
32e30700
GS
176 return my_perl;
177}
178#else
954c1994
GS
179
180/*
ccfc67b7
JH
181=head1 Embedding Functions
182
954c1994
GS
183=for apidoc perl_alloc
184
185Allocates a new Perl interpreter. See L<perlembed>.
186
187=cut
188*/
189
93a17b20 190PerlInterpreter *
cea2e8a9 191perl_alloc(void)
79072805 192{
cea2e8a9 193 PerlInterpreter *my_perl;
79072805 194
9f653bb5 195 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 197
e6827a76 198 S_init_tls_and_interp(my_perl);
7cb608b5 199#ifndef PERL_TRACK_MEMPOOL
07409e01 200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
201#else
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
204 return my_perl;
205#endif
79072805 206}
32e30700 207#endif /* PERL_IMPLICIT_SYS */
79072805 208
954c1994
GS
209/*
210=for apidoc perl_construct
211
212Initializes a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
79072805 217void
0cb96387 218perl_construct(pTHXx)
79072805 219{
27da23d5 220 dVAR;
7918f24d
NC
221
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
223
8990e307 224#ifdef MULTIPLICITY
54aff467 225 init_interp();
ac27b0f5 226 PL_perl_destruct_level = 1;
54aff467 227#else
7918f24d 228 PERL_UNUSED_ARG(my_perl);
54aff467
GS
229 if (PL_perl_destruct_level > 0)
230 init_interp();
231#endif
34caed6d
DM
232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233
75d476e2
SM
234#ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
236#endif
237
0d96b528 238 init_constants();
34caed6d
DM
239
240 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
242
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 244#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 245 PL_pidstatus = newHV();
ca0c25f6 246#endif
79072805 247
396482e1 248 PL_rs = newSVpvs("\n");
dc92893f 249
cea2e8a9 250 init_stacks();
79072805 251
748a9306 252 init_ids();
a5f75d66 253
312caa8e 254 JMPENV_BOOTSTRAP;
f86702cc
PP
255 STATUS_ALL_SUCCESS;
256
0672f40e 257 init_i18nl10n(1);
0b5b802d 258
ab821d7f 259#if defined(LOCAL_PATCH_COUNT)
3280af22 260 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
261#endif
262
52853b95
GS
263#ifdef HAVE_INTERP_INTERN
264 sys_intern_init();
265#endif
266
3a1ee7e8 267 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 268
3280af22
NIS
269 PL_fdpid = newAV(); /* for remembering popen pids by fd */
270 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 271 PL_errors = newSVpvs("");
76f68e9b
MHM
272 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
273 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
274 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 275#ifdef USE_ITHREADS
402d2eb1
NC
276 /* First entry is a list of empty elements. It needs to be initialised
277 else all hell breaks loose in S_find_uninit_var(). */
278 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 279 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 280 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 281#endif
e5dd39fc 282#ifdef USE_REENTRANT_API
59bd0823 283 Perl_reentrant_init(aTHX);
e5dd39fc 284#endif
7dc86639
YO
285#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
286 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
287 * This MUST be done before any hash stores or fetches take place.
288 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
289 * yourself, it is your responsibility to provide a good random seed!
290 * You can also define PERL_HASH_SEED in compile time, see hv.h.
291 *
292 * XXX: fix this comment */
293 if (PL_hash_seed_set == FALSE) {
294 Perl_get_hash_seed(aTHX_ PL_hash_seed);
295 PL_hash_seed_set= TRUE;
296 }
297#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
298
299 /* Note that strtab is a rather special HV. Assumptions are made
300 about not iterating on it, and not adding tie magic to it.
301 It is properly deallocated in perl_destruct() */
302 PL_strtab = newHV();
303
3d47000e
AB
304 HvSHAREKEYS_off(PL_strtab); /* mandatory */
305 hv_ksplit(PL_strtab, 512);
306
a38ab475
RZ
307 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
308
2f42fcb0
JH
309#ifndef PERL_MICRO
310# ifdef USE_ENVIRON_ARRAY
0631ea03 311 PL_origenviron = environ;
2f42fcb0 312# endif
0631ea03
AB
313#endif
314
5311654c 315 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 316 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
317 * The HZ if not originally defined has been by now
318 * been defined as CLK_TCK, if available. */
b6c36746 319#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
320 PL_clocktick = sysconf(_SC_CLK_TCK);
321 if (PL_clocktick <= 0)
322#endif
323 PL_clocktick = HZ;
324
081fc587
AB
325 PL_stashcache = newHV();
326
e8e3635e 327 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 328
27da23d5
JH
329#ifdef HAS_MMAP
330 if (!PL_mmap_page_size) {
331#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 {
333 SETERRNO(0, SS_NORMAL);
334# ifdef _SC_PAGESIZE
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336# else
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338# endif
339 if ((long) PL_mmap_page_size < 0) {
340 if (errno) {
44f8325f 341 SV * const error = ERRSV;
d4c19fe8 342 SvUPGRADE(error, SVt_PV);
0510663f 343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
344 }
345 else
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
347 }
348 }
349#else
350# ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
352# else
353# if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
355# endif
356# endif
357#endif
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
361 }
362#endif /* HAS_MMAP */
363
364#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
369#endif
370
7d113631
NC
371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372
a3e6e81e 373 PL_registered_mros = newHV();
9e169432
NC
374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
a3e6e81e 376
7b8dd5f4
KW
377 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
378 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
379 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
380 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
381 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
382 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
383 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
384 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
385 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
386 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
387 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
388 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
389 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
390 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
391 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
392 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
393 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
394
8990e307 395 ENTER;
79072805
LW
396}
397
954c1994 398/*
62375a60
NIS
399=for apidoc nothreadhook
400
401Stub that provides thread hook for perl_destruct when there are
402no threads.
403
404=cut
405*/
406
407int
4e9e3734 408Perl_nothreadhook(pTHX)
62375a60 409{
96a5add6 410 PERL_UNUSED_CONTEXT;
62375a60
NIS
411 return 0;
412}
413
41e4abd8
NC
414#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
415void
416Perl_dump_sv_child(pTHX_ SV *sv)
417{
418 ssize_t got;
bf357333
NC
419 const int sock = PL_dumper_fd;
420 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
421 union control_un control;
422 struct msghdr msg;
808ad2d0 423 struct iovec vec[2];
bf357333 424 struct cmsghdr *cmptr;
808ad2d0
NC
425 int returned_errno;
426 unsigned char buffer[256];
41e4abd8 427
7918f24d
NC
428 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
429
bf357333 430 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
431 return;
432
433 PerlIO_flush(Perl_debug_log);
434
bf357333
NC
435 /* All these shenanigans are to pass a file descriptor over to our child for
436 it to dump out to. We can't let it hold open the file descriptor when it
437 forks, as the file descriptor it will dump to can turn out to be one end
438 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 439 be open, the wait would be forever.) */
bf357333
NC
440
441 msg.msg_control = control.control;
442 msg.msg_controllen = sizeof(control.control);
443 /* We're a connected socket so we don't need a destination */
444 msg.msg_name = NULL;
445 msg.msg_namelen = 0;
446 msg.msg_iov = vec;
808ad2d0 447 msg.msg_iovlen = 1;
bf357333
NC
448
449 cmptr = CMSG_FIRSTHDR(&msg);
450 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
451 cmptr->cmsg_level = SOL_SOCKET;
452 cmptr->cmsg_type = SCM_RIGHTS;
453 *((int *)CMSG_DATA(cmptr)) = 1;
454
455 vec[0].iov_base = (void*)&sv;
456 vec[0].iov_len = sizeof(sv);
457 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
458
459 if(got < 0) {
bf357333 460 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
461 abort();
462 }
bf357333
NC
463 if(got < sizeof(sv)) {
464 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
465 abort();
466 }
467
808ad2d0
NC
468 /* Return protocol is
469 int: errno value
470 unsigned char: length of location string (0 for empty)
471 unsigned char*: string (not terminated)
472 */
473 vec[0].iov_base = (void*)&returned_errno;
474 vec[0].iov_len = sizeof(returned_errno);
475 vec[1].iov_base = buffer;
476 vec[1].iov_len = 1;
477
478 got = readv(sock, vec, 2);
41e4abd8
NC
479
480 if(got < 0) {
481 perror("Debug leaking scalars parent read failed");
808ad2d0 482 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
483 abort();
484 }
808ad2d0 485 if(got < sizeof(returned_errno) + 1) {
41e4abd8 486 perror("Debug leaking scalars parent short read");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
490
808ad2d0
NC
491 if (*buffer) {
492 got = read(sock, buffer + 1, *buffer);
493 if(got < 0) {
494 perror("Debug leaking scalars parent read 2 failed");
495 PerlIO_flush(PerlIO_stderr());
496 abort();
497 }
498
499 if(got < *buffer) {
500 perror("Debug leaking scalars parent short read 2");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504 }
505
506 if (returned_errno || *buffer) {
507 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
508 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 509 returned_errno, Strerror(returned_errno));
41e4abd8
NC
510 }
511}
512#endif
513
62375a60 514/*
954c1994
GS
515=for apidoc perl_destruct
516
517Shuts down a Perl interpreter. See L<perlembed>.
518
519=cut
520*/
521
31d77e54 522int
0cb96387 523perl_destruct(pTHXx)
79072805 524{
27da23d5 525 dVAR;
be2ea8ed 526 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 527 HV *hv;
2aa47728 528#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
529 pid_t child;
530#endif
9c0b6888 531 int i;
8990e307 532
7918f24d
NC
533 PERL_ARGS_ASSERT_PERL_DESTRUCT;
534#ifndef MULTIPLICITY
ed6c66dd 535 PERL_UNUSED_ARG(my_perl);
7918f24d 536#endif
9d4ba2ae 537
3d22c4f0
GG
538 assert(PL_scopestack_ix == 1);
539
7766f137
GS
540 /* wait for all pseudo-forked children to finish */
541 PERL_WAIT_FOR_CHILDREN;
542
3280af22 543 destruct_level = PL_perl_destruct_level;
36e77d41 544#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 545 {
9d4ba2ae
AL
546 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
547 if (s) {
96e440d2
JH
548 int i;
549 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
550 i = -1;
551 } else {
552 i = grok_atou(s, NULL);
553 }
36e77d41
DD
554#ifdef DEBUGGING
555 if (destruct_level < i) destruct_level = i;
556#endif
557#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
558 /* RT #114496, for perl_free */
559 PL_perl_destruct_level = i;
36e77d41 560#endif
5f05dabc 561 }
4633a7c4
LW
562 }
563#endif
564
27da23d5 565 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
566 dJMPENV;
567 int x = 0;
568
569 JMPENV_PUSH(x);
1b6737cc 570 PERL_UNUSED_VAR(x);
9ebf26ad 571 if (PL_endav && !PL_minus_c) {
ca7b837b 572 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 573 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 574 }
f3faeb53 575 JMPENV_POP;
26f423df 576 }
f3faeb53 577 LEAVE;
a0d0e21e 578 FREETMPS;
3d22c4f0 579 assert(PL_scopestack_ix == 0);
a0d0e21e 580
e00b64d4 581 /* Need to flush since END blocks can produce output */
f13a2bc0 582 my_fflush_all();
e00b64d4 583
75d476e2
SM
584#ifdef PERL_TRACE_OPS
585 /* If we traced all Perl OP usage, report and clean up */
586 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
587 for (i = 0; i <= OP_max; ++i) {
588 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
589 PL_op_exec_cnt[i] = 0;
590 }
591 /* Utility slot for easily doing little tracing experiments in the runloop: */
592 if (PL_op_exec_cnt[OP_max+1] != 0)
593 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
594 PerlIO_printf(Perl_debug_log, "\n");
595#endif
596
597
16c91539 598 if (PL_threadhook(aTHX)) {
62375a60 599 /* Threads hook has vetoed further cleanup */
c301d606 600 PL_veto_cleanup = TRUE;
37038d91 601 return STATUS_EXIT;
62375a60
NIS
602 }
603
2aa47728
NC
604#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
605 if (destruct_level != 0) {
606 /* Fork here to create a child. Our child's job is to preserve the
607 state of scalars prior to destruction, so that we can instruct it
608 to dump any scalars that we later find have leaked.
609 There's no subtlety in this code - it assumes POSIX, and it doesn't
610 fail gracefully */
611 int fd[2];
612
613 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
614 perror("Debug leaking scalars socketpair failed");
615 abort();
616 }
617
618 child = fork();
619 if(child == -1) {
620 perror("Debug leaking scalars fork failed");
621 abort();
622 }
623 if (!child) {
624 /* We are the child */
3125a5a4
NC
625 const int sock = fd[1];
626 const int debug_fd = PerlIO_fileno(Perl_debug_log);
627 int f;
808ad2d0
NC
628 const char *where;
629 /* Our success message is an integer 0, and a char 0 */
b61433a9 630 static const char success[sizeof(int) + 1] = {0};
3125a5a4 631
2aa47728 632 close(fd[0]);
2aa47728 633
3125a5a4
NC
634 /* We need to close all other file descriptors otherwise we end up
635 with interesting hangs, where the parent closes its end of a
636 pipe, and sits waiting for (another) child to terminate. Only
637 that child never terminates, because it never gets EOF, because
bf357333
NC
638 we also have the far end of the pipe open. We even need to
639 close the debugging fd, because sometimes it happens to be one
640 end of a pipe, and a process is waiting on the other end for
641 EOF. Normally it would be closed at some point earlier in
642 destruction, but if we happen to cause the pipe to remain open,
643 EOF never occurs, and we get an infinite hang. Hence all the
644 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
645
646 f = sysconf(_SC_OPEN_MAX);
647 if(f < 0) {
808ad2d0
NC
648 where = "sysconf failed";
649 goto abort;
3125a5a4
NC
650 }
651 while (f--) {
652 if (f == sock)
653 continue;
3125a5a4
NC
654 close(f);
655 }
656
2aa47728
NC
657 while (1) {
658 SV *target;
bf357333
NC
659 union control_un control;
660 struct msghdr msg;
661 struct iovec vec[1];
662 struct cmsghdr *cmptr;
663 ssize_t got;
664 int got_fd;
665
666 msg.msg_control = control.control;
667 msg.msg_controllen = sizeof(control.control);
668 /* We're a connected socket so we don't need a source */
669 msg.msg_name = NULL;
670 msg.msg_namelen = 0;
671 msg.msg_iov = vec;
c3caa5c3 672 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
673
674 vec[0].iov_base = (void*)&target;
675 vec[0].iov_len = sizeof(target);
676
677 got = recvmsg(sock, &msg, 0);
2aa47728
NC
678
679 if(got == 0)
680 break;
681 if(got < 0) {
808ad2d0
NC
682 where = "recv failed";
683 goto abort;
2aa47728
NC
684 }
685 if(got < sizeof(target)) {
808ad2d0
NC
686 where = "short recv";
687 goto abort;
2aa47728 688 }
bf357333 689
808ad2d0
NC
690 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
691 where = "no cmsg";
692 goto abort;
693 }
694 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
695 where = "wrong cmsg_len";
696 goto abort;
697 }
698 if(cmptr->cmsg_level != SOL_SOCKET) {
699 where = "wrong cmsg_level";
700 goto abort;
701 }
702 if(cmptr->cmsg_type != SCM_RIGHTS) {
703 where = "wrong cmsg_type";
704 goto abort;
705 }
bf357333
NC
706
707 got_fd = *(int*)CMSG_DATA(cmptr);
708 /* For our last little bit of trickery, put the file descriptor
709 back into Perl_debug_log, as if we never actually closed it
710 */
808ad2d0
NC
711 if(got_fd != debug_fd) {
712 if (dup2(got_fd, debug_fd) == -1) {
713 where = "dup2";
714 goto abort;
715 }
716 }
2aa47728 717 sv_dump(target);
bf357333 718
2aa47728
NC
719 PerlIO_flush(Perl_debug_log);
720
808ad2d0 721 got = write(sock, &success, sizeof(success));
2aa47728
NC
722
723 if(got < 0) {
808ad2d0
NC
724 where = "write failed";
725 goto abort;
2aa47728 726 }
808ad2d0
NC
727 if(got < sizeof(success)) {
728 where = "short write";
729 goto abort;
2aa47728
NC
730 }
731 }
732 _exit(0);
808ad2d0
NC
733 abort:
734 {
735 int send_errno = errno;
736 unsigned char length = (unsigned char) strlen(where);
737 struct iovec failure[3] = {
738 {(void*)&send_errno, sizeof(send_errno)},
739 {&length, 1},
740 {(void*)where, length}
741 };
742 int got = writev(sock, failure, 3);
743 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
744 in the parent if we try to read from the socketpair after the
745 child has exited, even if there was data to read.
746 So sleep a bit to give the parent a fighting chance of
747 reading the data. */
748 sleep(2);
749 _exit((got == -1) ? errno : 0);
750 }
bf357333 751 /* End of child. */
2aa47728 752 }
41e4abd8 753 PL_dumper_fd = fd[0];
2aa47728
NC
754 close(fd[1]);
755 }
756#endif
757
ff0cee69
PP
758 /* We must account for everything. */
759
760 /* Destroy the main CV and syntax tree */
37e77c23
FC
761 /* Set PL_curcop now, because destroying ops can cause new SVs
762 to be generated in Perl_pad_swipe, and when running with
763 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
764 op from which the filename structure member is copied. */
17fbfdf6 765 PL_curcop = &PL_compiling;
3280af22 766 if (PL_main_root) {
4e380990
DM
767 /* ensure comppad/curpad to refer to main's pad */
768 if (CvPADLIST(PL_main_cv)) {
769 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 770 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 771 }
3280af22 772 op_free(PL_main_root);
5f66b61c 773 PL_main_root = NULL;
a0d0e21e 774 }
5f66b61c 775 PL_main_start = NULL;
aac9d523
DM
776 /* note that PL_main_cv isn't usually actually freed at this point,
777 * due to the CvOUTSIDE refs from subs compiled within it. It will
778 * get freed once all the subs are freed in sv_clean_all(), for
779 * destruct_level > 0 */
3280af22 780 SvREFCNT_dec(PL_main_cv);
601f1833 781 PL_main_cv = NULL;
ca7b837b 782 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 783
13621cfb
NIS
784 /* Tell PerlIO we are about to tear things apart in case
785 we have layers which are using resources that should
786 be cleaned up now.
787 */
788
789 PerlIO_destruct(aTHX);
790
ddf23d4a
SM
791 /*
792 * Try to destruct global references. We do this first so that the
793 * destructors and destructees still exist. Some sv's might remain.
794 * Non-referenced objects are on their own.
795 */
796 sv_clean_objs();
8990e307 797
5cd24f17 798 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 799 SvREFCNT_dec(PL_warnhook);
a0714e2c 800 PL_warnhook = NULL;
3280af22 801 SvREFCNT_dec(PL_diehook);
a0714e2c 802 PL_diehook = NULL;
5cd24f17 803
4b556e6c 804 /* call exit list functions */
3280af22 805 while (PL_exitlistlen-- > 0)
acfe0abc 806 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 807
3280af22 808 Safefree(PL_exitlist);
4b556e6c 809
1c4916e5
CB
810 PL_exitlist = NULL;
811 PL_exitlistlen = 0;
812
a3e6e81e
NC
813 SvREFCNT_dec(PL_registered_mros);
814
551a8b83 815 /* jettison our possibly duplicated environment */
4b647fb0
DM
816 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
817 * so we certainly shouldn't free it here
818 */
2f42fcb0 819#ifndef PERL_MICRO
4b647fb0 820#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 821 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
822#ifdef USE_ITHREADS
823 /* only main thread can free environ[0] contents */
824 && PL_curinterp == aTHX
825#endif
826 )
827 {
551a8b83
JH
828 I32 i;
829
830 for (i = 0; environ[i]; i++)
4b420006 831 safesysfree(environ[i]);
0631ea03 832
4b420006
JH
833 /* Must use safesysfree() when working with environ. */
834 safesysfree(environ);
551a8b83
JH
835
836 environ = PL_origenviron;
837 }
838#endif
2f42fcb0 839#endif /* !PERL_MICRO */
551a8b83 840
30985c42
JH
841 if (destruct_level == 0) {
842
843 DEBUG_P(debprofdump());
844
845#if defined(PERLIO_LAYERS)
846 /* No more IO - including error messages ! */
847 PerlIO_cleanup(aTHX);
848#endif
849
850 CopFILE_free(&PL_compiling);
30985c42
JH
851
852 /* The exit() function will do everything that needs doing. */
853 return STATUS_EXIT;
854 }
855
9fa9f06b
KW
856 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
857
5f8cb046
DM
858#ifdef USE_ITHREADS
859 /* the syntax tree is shared between clones
860 * so op_free(PL_main_root) only ReREFCNT_dec's
861 * REGEXPs in the parent interpreter
862 * we need to manually ReREFCNT_dec for the clones
863 */
0547a729
DM
864 {
865 I32 i = AvFILLp(PL_regex_padav);
866 SV **ary = AvARRAY(PL_regex_padav);
867
868 for (; i; i--) {
869 SvREFCNT_dec(ary[i]);
870 ary[i] = &PL_sv_undef;
871 }
872 }
5f8cb046
DM
873#endif
874
0547a729 875
ad64d0ec 876 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
877 PL_stashcache = NULL;
878
5f05dabc
PP
879 /* loosen bonds of global variables */
880
2f9285f8
DM
881 /* XXX can PL_parser still be non-null here? */
882 if(PL_parser && PL_parser->rsfp) {
883 (void)PerlIO_close(PL_parser->rsfp);
884 PL_parser->rsfp = NULL;
8ebc5c01
PP
885 }
886
84386e14
RGS
887 if (PL_minus_F) {
888 Safefree(PL_splitstr);
889 PL_splitstr = NULL;
890 }
891
8ebc5c01 892 /* switches */
3280af22
NIS
893 PL_minus_n = FALSE;
894 PL_minus_p = FALSE;
895 PL_minus_l = FALSE;
896 PL_minus_a = FALSE;
897 PL_minus_F = FALSE;
898 PL_doswitches = FALSE;
599cee73 899 PL_dowarn = G_WARN_OFF;
1a904fc8 900#ifdef PERL_SAWAMPERSAND
d3b97530 901 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 902#endif
3280af22
NIS
903 PL_unsafe = FALSE;
904
905 Safefree(PL_inplace);
bd61b366 906 PL_inplace = NULL;
a7cb1f99 907 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
908
909 if (PL_e_script) {
910 SvREFCNT_dec(PL_e_script);
a0714e2c 911 PL_e_script = NULL;
8ebc5c01
PP
912 }
913
bf9cdc68
RG
914 PL_perldb = 0;
915
8ebc5c01
PP
916 /* magical thingies */
917
e23d9e2f
CS
918 SvREFCNT_dec(PL_ofsgv); /* *, */
919 PL_ofsgv = NULL;
5f05dabc 920
7889fe52 921 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 922 PL_ors_sv = NULL;
8ebc5c01 923
3280af22 924 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 925 PL_rs = NULL;
dc92893f 926
d33b2eba 927 Safefree(PL_osname); /* $^O */
bd61b366 928 PL_osname = NULL;
5f05dabc 929
3280af22 930 SvREFCNT_dec(PL_statname);
a0714e2c
SS
931 PL_statname = NULL;
932 PL_statgv = NULL;
5f05dabc 933
8ebc5c01
PP
934 /* defgv, aka *_ should be taken care of elsewhere */
935
7d5ea4e7
GS
936 /* float buffer */
937 Safefree(PL_efloatbuf);
bd61b366 938 PL_efloatbuf = NULL;
7d5ea4e7
GS
939 PL_efloatsize = 0;
940
8ebc5c01 941 /* startup and shutdown function lists */
3280af22 942 SvREFCNT_dec(PL_beginav);
5a837c8f 943 SvREFCNT_dec(PL_beginav_save);
3280af22 944 SvREFCNT_dec(PL_endav);
7d30b5c4 945 SvREFCNT_dec(PL_checkav);
ece599bd 946 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
947 SvREFCNT_dec(PL_unitcheckav);
948 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 949 SvREFCNT_dec(PL_initav);
7d49f689
NC
950 PL_beginav = NULL;
951 PL_beginav_save = NULL;
952 PL_endav = NULL;
953 PL_checkav = NULL;
954 PL_checkav_save = NULL;
3c10abe3
AG
955 PL_unitcheckav = NULL;
956 PL_unitcheckav_save = NULL;
7d49f689 957 PL_initav = NULL;
5618dfe8 958
8ebc5c01 959 /* shortcuts just get cleared */
a0714e2c
SS
960 PL_hintgv = NULL;
961 PL_errgv = NULL;
a0714e2c
SS
962 PL_argvoutgv = NULL;
963 PL_stdingv = NULL;
964 PL_stderrgv = NULL;
965 PL_last_in_gv = NULL;
a0714e2c
SS
966 PL_DBsingle = NULL;
967 PL_DBtrace = NULL;
968 PL_DBsignal = NULL;
a6d69523
TC
969 PL_DBsingle_iv = 0;
970 PL_DBtrace_iv = 0;
971 PL_DBsignal_iv = 0;
601f1833 972 PL_DBcv = NULL;
7d49f689 973 PL_dbargs = NULL;
5c284bb0 974 PL_debstash = NULL;
8ebc5c01 975
cf93a474 976 SvREFCNT_dec(PL_envgv);
f03015cd 977 SvREFCNT_dec(PL_incgv);
722fa0e9 978 SvREFCNT_dec(PL_argvgv);
475b1e90 979 SvREFCNT_dec(PL_replgv);
8cece913
FC
980 SvREFCNT_dec(PL_DBgv);
981 SvREFCNT_dec(PL_DBline);
982 SvREFCNT_dec(PL_DBsub);
cf93a474 983 PL_envgv = NULL;
f03015cd 984 PL_incgv = NULL;
722fa0e9 985 PL_argvgv = NULL;
475b1e90 986 PL_replgv = NULL;
8cece913
FC
987 PL_DBgv = NULL;
988 PL_DBline = NULL;
989 PL_DBsub = NULL;
990
7a1c5554 991 SvREFCNT_dec(PL_argvout_stack);
7d49f689 992 PL_argvout_stack = NULL;
8ebc5c01 993
5c831c24 994 SvREFCNT_dec(PL_modglobal);
5c284bb0 995 PL_modglobal = NULL;
5c831c24 996 SvREFCNT_dec(PL_preambleav);
7d49f689 997 PL_preambleav = NULL;
5c831c24 998 SvREFCNT_dec(PL_subname);
a0714e2c 999 PL_subname = NULL;
ca0c25f6 1000#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1001 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1002 PL_pidstatus = NULL;
ca0c25f6 1003#endif
5c831c24 1004 SvREFCNT_dec(PL_toptarget);
a0714e2c 1005 PL_toptarget = NULL;
5c831c24 1006 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1007 PL_bodytarget = NULL;
1008 PL_formtarget = NULL;
5c831c24 1009
d33b2eba 1010 /* free locale stuff */
b9582b6a 1011#ifdef USE_LOCALE_COLLATE
d33b2eba 1012 Safefree(PL_collation_name);
bd61b366 1013 PL_collation_name = NULL;
b9582b6a 1014#endif
d33b2eba 1015
b9582b6a 1016#ifdef USE_LOCALE_NUMERIC
d33b2eba 1017 Safefree(PL_numeric_name);
bd61b366 1018 PL_numeric_name = NULL;
a453c169 1019 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1020 PL_numeric_radix_sv = NULL;
b9582b6a 1021#endif
d33b2eba 1022
9c0b6888
KW
1023 /* clear character classes */
1024 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1025 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1026 PL_utf8_swash_ptrs[i] = NULL;
1027 }
5c831c24
GS
1028 SvREFCNT_dec(PL_utf8_mark);
1029 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1030 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1031 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1032 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1033 SvREFCNT_dec(PL_utf8_idstart);
1034 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1035 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1036 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1037 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1038 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1039 SvREFCNT_dec(PL_UpperLatin1);
1040 SvREFCNT_dec(PL_Latin1);
1041 SvREFCNT_dec(PL_NonL1NonFinalFold);
1042 SvREFCNT_dec(PL_HasMultiCharFold);
a0714e2c
SS
1043 PL_utf8_mark = NULL;
1044 PL_utf8_toupper = NULL;
1045 PL_utf8_totitle = NULL;
1046 PL_utf8_tolower = NULL;
1047 PL_utf8_tofold = NULL;
1048 PL_utf8_idstart = NULL;
1049 PL_utf8_idcont = NULL;
2726813d 1050 PL_utf8_foldclosures = NULL;
9fa9f06b 1051 PL_AboveLatin1 = NULL;
e0a1ff7a 1052 PL_InBitmap = NULL;
9fa9f06b
KW
1053 PL_HasMultiCharFold = NULL;
1054 PL_Latin1 = NULL;
1055 PL_NonL1NonFinalFold = NULL;
1056 PL_UpperLatin1 = NULL;
86f72d56 1057 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1058 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1059 PL_XPosix_ptrs[i] = NULL;
86f72d56 1060 }
5c831c24 1061
971a9dd3 1062 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1063 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1064 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1065 cophh_free(CopHINTHASH_get(&PL_compiling));
1066 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1067 CopFILE_free(&PL_compiling);
5c831c24 1068
a0d0e21e 1069 /* Prepare to destruct main symbol table. */
5f05dabc 1070
3280af22 1071 hv = PL_defstash;
ca556bcd
DM
1072 /* break ref loop *:: <=> %:: */
1073 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1074 PL_defstash = 0;
a0d0e21e 1075 SvREFCNT_dec(hv);
5c831c24 1076 SvREFCNT_dec(PL_curstname);
a0714e2c 1077 PL_curstname = NULL;
a0d0e21e 1078
5a844595
GS
1079 /* clear queued errors */
1080 SvREFCNT_dec(PL_errors);
a0714e2c 1081 PL_errors = NULL;
5a844595 1082
dd69841b
BB
1083 SvREFCNT_dec(PL_isarev);
1084
a0d0e21e 1085 FREETMPS;
9b387841 1086 if (destruct_level >= 2) {
3280af22 1087 if (PL_scopestack_ix != 0)
9b387841
NC
1088 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1089 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1090 (long)PL_scopestack_ix);
3280af22 1091 if (PL_savestack_ix != 0)
9b387841
NC
1092 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1093 "Unbalanced saves: %ld more saves than restores\n",
1094 (long)PL_savestack_ix);
3280af22 1095 if (PL_tmps_floor != -1)
9b387841
NC
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1097 (long)PL_tmps_floor + 1);
a0d0e21e 1098 if (cxstack_ix != -1)
9b387841
NC
1099 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1100 (long)cxstack_ix + 1);
a0d0e21e 1101 }
8990e307 1102
0547a729
DM
1103#ifdef USE_ITHREADS
1104 SvREFCNT_dec(PL_regex_padav);
1105 PL_regex_padav = NULL;
1106 PL_regex_pad = NULL;
1107#endif
1108
776df701 1109#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1110 /* the entries in this list are allocated via SV PVX's, so get freed
1111 * in sv_clean_all */
1112 Safefree(PL_my_cxt_list);
776df701 1113#endif
57bb2458 1114
8990e307 1115 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1116
1117 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1118 while (sv_clean_all() > 2)
5226ed68
JH
1119 ;
1120
23083432
FC
1121#ifdef USE_ITHREADS
1122 Safefree(PL_stashpad); /* must come after sv_clean_all */
1123#endif
1124
d4777f27
GS
1125 AvREAL_off(PL_fdpid); /* no surviving entries */
1126 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1127 PL_fdpid = NULL;
d33b2eba 1128
6c644e78
GS
1129#ifdef HAVE_INTERP_INTERN
1130 sys_intern_clear();
1131#endif
1132
a38ab475
RZ
1133 /* constant strings */
1134 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1135 SvREFCNT_dec(PL_sv_consts[i]);
1136 PL_sv_consts[i] = NULL;
1137 }
1138
6e72f9df
PP
1139 /* Destruct the global string table. */
1140 {
1141 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1142 * so that sv_free() won't fail on them.
80459961
NC
1143 * Now that the global string table is using a single hunk of memory
1144 * for both HE and HEK, we either need to explicitly unshare it the
1145 * correct way, or actually free things here.
6e72f9df 1146 */
80459961
NC
1147 I32 riter = 0;
1148 const I32 max = HvMAX(PL_strtab);
c4420975 1149 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1150 HE *hent = array[0];
1151
6e72f9df 1152 for (;;) {
0453d815 1153 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1154 HE * const next = HeNEXT(hent);
9014280d 1155 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1156 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1157 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1158 Safefree(hent);
1159 hent = next;
6e72f9df
PP
1160 }
1161 if (!hent) {
1162 if (++riter > max)
1163 break;
1164 hent = array[riter];
1165 }
1166 }
80459961
NC
1167
1168 Safefree(array);
1169 HvARRAY(PL_strtab) = 0;
1170 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1171 }
3280af22 1172 SvREFCNT_dec(PL_strtab);
6e72f9df 1173
e652bb2f 1174#ifdef USE_ITHREADS
c21d1a0f 1175 /* free the pointer tables used for cloning */
a0739874 1176 ptr_table_free(PL_ptr_table);
bf9cdc68 1177 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1178#endif
a0739874 1179
d33b2eba
GS
1180 /* free special SVs */
1181
1182 SvREFCNT(&PL_sv_yes) = 0;
1183 sv_clear(&PL_sv_yes);
1184 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1185 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1186
1187 SvREFCNT(&PL_sv_no) = 0;
1188 sv_clear(&PL_sv_no);
1189 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1190 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1191
9f375a43
DM
1192 {
1193 int i;
1194 for (i=0; i<=2; i++) {
1195 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1196 sv_clear(PERL_DEBUG_PAD(i));
1197 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1198 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1199 }
1200 }
1201
0453d815 1202 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1203 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1204
eba0f806
DM
1205#ifdef DEBUG_LEAKING_SCALARS
1206 if (PL_sv_count != 0) {
1207 SV* sva;
1208 SV* sv;
eb578fdb 1209 SV* svend;
eba0f806 1210
ad64d0ec 1211 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1212 svend = &sva[SvREFCNT(sva)];
1213 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1214 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1215 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1216 " flags=0x%"UVxf
fd0854ff 1217 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1218 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1219 "serial %"UVuf"\n",
574b8821
NC
1220 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1221 pTHX__VALUE,
fd0854ff
DM
1222 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1223 sv->sv_debug_line,
1224 sv->sv_debug_inpad ? "for" : "by",
1225 sv->sv_debug_optype ?
1226 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1227 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1228 sv->sv_debug_serial
fd0854ff 1229 );
2aa47728 1230#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1231 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1232#endif
eba0f806
DM
1233 }
1234 }
1235 }
1236 }
2aa47728
NC
1237#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1238 {
1239 int status;
1240 fd_set rset;
1241 /* Wait for up to 4 seconds for child to terminate.
1242 This seems to be the least effort way of timing out on reaping
1243 its exit status. */
1244 struct timeval waitfor = {4, 0};
41e4abd8 1245 int sock = PL_dumper_fd;
2aa47728
NC
1246
1247 shutdown(sock, 1);
1248 FD_ZERO(&rset);
1249 FD_SET(sock, &rset);
1250 select(sock + 1, &rset, NULL, NULL, &waitfor);
1251 waitpid(child, &status, WNOHANG);
1252 close(sock);
1253 }
1254#endif
eba0f806 1255#endif
77abb4c6
NC
1256#ifdef DEBUG_LEAKING_SCALARS_ABORT
1257 if (PL_sv_count)
1258 abort();
1259#endif
bf9cdc68 1260 PL_sv_count = 0;
eba0f806 1261
56a2bab7 1262#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1263 /* No more IO - including error messages ! */
1264 PerlIO_cleanup(aTHX);
1265#endif
1266
9f4bd222 1267 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1268 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1269 for no arg - and will try and SvREFCNT_dec it.
1270 */
1271 SvREFCNT(&PL_sv_undef) = 0;
1272 SvREADONLY_off(&PL_sv_undef);
1273
3280af22 1274 Safefree(PL_origfilename);
bd61b366 1275 PL_origfilename = NULL;
43c5f42d 1276 Safefree(PL_reg_curpm);
dd28f7bb 1277 free_tied_hv_pool();
3280af22 1278 Safefree(PL_op_mask);
cf36064f 1279 Safefree(PL_psig_name);
bf9cdc68 1280 PL_psig_name = (SV**)NULL;
d525a7b2 1281 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1282 {
1283 /* We need to NULL PL_psig_pend first, so that
1284 signal handlers know not to use it */
1285 int *psig_save = PL_psig_pend;
1286 PL_psig_pend = (int*)NULL;
1287 Safefree(psig_save);
1288 }
6e72f9df 1289 nuke_stacks();
284167a5
SM
1290 TAINTING_set(FALSE);
1291 TAINT_WARN_set(FALSE);
3280af22 1292 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1293 PL_debug = 0;
ac27b0f5 1294
a0d0e21e 1295 DEBUG_P(debprofdump());
d33b2eba 1296
e5dd39fc 1297#ifdef USE_REENTRANT_API
10bc17b6 1298 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1299#endif
1300
612f20c3
GS
1301 sv_free_arenas();
1302
5d9a96ca
DM
1303 while (PL_regmatch_slab) {
1304 regmatch_slab *s = PL_regmatch_slab;
1305 PL_regmatch_slab = PL_regmatch_slab->next;
1306 Safefree(s);
1307 }
1308
fc36a67e
PP
1309 /* As the absolutely last thing, free the non-arena SV for mess() */
1310
3280af22 1311 if (PL_mess_sv) {
f350b448
NC
1312 /* we know that type == SVt_PVMG */
1313
9c63abab 1314 /* it could have accumulated taint magic */
f350b448
NC
1315 MAGIC* mg;
1316 MAGIC* moremagic;
1317 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1318 moremagic = mg->mg_moremagic;
1319 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1320 && mg->mg_len >= 0)
1321 Safefree(mg->mg_ptr);
1322 Safefree(mg);
9c63abab 1323 }
f350b448 1324
fc36a67e 1325 /* we know that type >= SVt_PV */
8bd4d4c5 1326 SvPV_free(PL_mess_sv);
3280af22
NIS
1327 Safefree(SvANY(PL_mess_sv));
1328 Safefree(PL_mess_sv);
a0714e2c 1329 PL_mess_sv = NULL;
fc36a67e 1330 }
37038d91 1331 return STATUS_EXIT;
79072805
LW
1332}
1333
954c1994
GS
1334/*
1335=for apidoc perl_free
1336
1337Releases a Perl interpreter. See L<perlembed>.
1338
1339=cut
1340*/
1341
79072805 1342void
0cb96387 1343perl_free(pTHXx)
79072805 1344{
5174512c
NC
1345 dVAR;
1346
7918f24d
NC
1347 PERL_ARGS_ASSERT_PERL_FREE;
1348
c301d606
DM
1349 if (PL_veto_cleanup)
1350 return;
1351
7cb608b5 1352#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1353 {
1354 /*
1355 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1356 * value as we're probably hunting memory leaks then
1357 */
36e77d41 1358 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1359 const U32 old_debug = PL_debug;
55ef9aae
MHM
1360 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1361 thread at thread exit. */
4fd0a9b8
NC
1362 if (DEBUG_m_TEST) {
1363 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1364 "free this thread's memory\n");
1365 PL_debug &= ~ DEBUG_m_FLAG;
1366 }
6edcbed6
DD
1367 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1368 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1369 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1370 safesysfree(ptr);
1371 }
4fd0a9b8 1372 PL_debug = old_debug;
55ef9aae
MHM
1373 }
1374 }
7cb608b5
NC
1375#endif
1376
acfe0abc 1377#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1378# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1379 {
acfe0abc 1380# ifdef NETWARE
7af12a34 1381 void *host = nw_internal_host;
7af12a34 1382 PerlMem_free(aTHXx);
7af12a34 1383 nw_delete_internal_host(host);
acfe0abc 1384# else
bdb50480
NC
1385 void *host = w32_internal_host;
1386 PerlMem_free(aTHXx);
7af12a34 1387 win32_delete_internal_host(host);
acfe0abc 1388# endif
7af12a34 1389 }
1c0ca838
GS
1390# else
1391 PerlMem_free(aTHXx);
1392# endif
acfe0abc
GS
1393#else
1394 PerlMem_free(aTHXx);
76e3520e 1395#endif
79072805
LW
1396}
1397
b7f7fff6 1398#if defined(USE_ITHREADS)
aebd1ac7
GA
1399/* provide destructors to clean up the thread key when libperl is unloaded */
1400#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1401
826955bd 1402#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1403#pragma fini "perl_fini"
666ad1ec
GA
1404#elif defined(__sun) && !defined(__GNUC__)
1405#pragma fini (perl_fini)
aebd1ac7
GA
1406#endif
1407
0dbb1585
AL
1408static void
1409#if defined(__GNUC__)
1410__attribute__((destructor))
aebd1ac7 1411#endif
de009b76 1412perl_fini(void)
aebd1ac7 1413{
27da23d5 1414 dVAR;
5c64bffd
NC
1415 if (
1416#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1417 my_vars &&
1418#endif
1419 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1420 FREE_THREAD_KEY;
1421}
1422
1423#endif /* WIN32 */
1424#endif /* THREADS */
1425
4b556e6c 1426void
864dbfa3 1427Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1428{
3280af22
NIS
1429 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1430 PL_exitlist[PL_exitlistlen].fn = fn;
1431 PL_exitlist[PL_exitlistlen].ptr = ptr;
1432 ++PL_exitlistlen;
4b556e6c
JD
1433}
1434
954c1994
GS
1435/*
1436=for apidoc perl_parse
1437
1438Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1439
1440=cut
1441*/
1442
03d9f026
FC
1443#define SET_CURSTASH(newstash) \
1444 if (PL_curstash != newstash) { \
1445 SvREFCNT_dec(PL_curstash); \
1446 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1447 }
1448
79072805 1449int
0cb96387 1450perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1451{
27da23d5 1452 dVAR;
6224f72b 1453 I32 oldscope;
6224f72b 1454 int ret;
db36c5a1 1455 dJMPENV;
8d063cd8 1456
7918f24d
NC
1457 PERL_ARGS_ASSERT_PERL_PARSE;
1458#ifndef MULTIPLICITY
ed6c66dd 1459 PERL_UNUSED_ARG(my_perl);
7918f24d 1460#endif
7dc86639 1461#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1462 {
7dc86639
YO
1463 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1464
96e440d2 1465 if (s && (grok_atou(s, NULL) == 1)) {
7dc86639
YO
1466 unsigned char *seed= PERL_HASH_SEED;
1467 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1468 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1469 while (seed < seed_end) {
1470 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1471 }
6a5b4183
YO
1472#ifdef PERL_HASH_RANDOMIZE_KEYS
1473 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1474 PL_HASH_RAND_BITS_ENABLED,
1475 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1476#endif
7dc86639
YO
1477 PerlIO_printf(Perl_debug_log, "\n");
1478 }
b0891165
JH
1479 }
1480#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1481 PL_origargc = argc;
e2975953 1482 PL_origargv = argv;
a0d0e21e 1483
a2722ac9
GA
1484 if (PL_origalen != 0) {
1485 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1486 }
1487 else {
3cb9023d
JH
1488 /* Set PL_origalen be the sum of the contiguous argv[]
1489 * elements plus the size of the env in case that it is
e9137a8e 1490 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1491 * as the maximum modifiable length of $0. In the worst case
1492 * the area we are able to modify is limited to the size of
43c32782 1493 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1494 * --jhi */
e1ec3a88 1495 const char *s = NULL;
54bfe034 1496 int i;
b7249aaf 1497 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1498 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1499 const UV aligned =
43c32782
JH
1500 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1501
1502 /* See if all the arguments are contiguous in memory. Note
1503 * that 'contiguous' is a loose term because some platforms
1504 * align the argv[] and the envp[]. If the arguments look
1505 * like non-aligned, assume that they are 'strictly' or
1506 * 'traditionally' contiguous. If the arguments look like
1507 * aligned, we just check that they are within aligned
1508 * PTRSIZE bytes. As long as no system has something bizarre
1509 * like the argv[] interleaved with some other data, we are
1510 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1511 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1512 while (*s) s++;
1513 for (i = 1; i < PL_origargc; i++) {
1514 if ((PL_origargv[i] == s + 1
43c32782 1515#ifdef OS2
c8941eeb 1516 || PL_origargv[i] == s + 2
43c32782 1517#endif
c8941eeb
JH
1518 )
1519 ||
1520 (aligned &&
1521 (PL_origargv[i] > s &&
1522 PL_origargv[i] <=
1523 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1524 )
1525 {
1526 s = PL_origargv[i];
1527 while (*s) s++;
1528 }
1529 else
1530 break;
54bfe034 1531 }
54bfe034 1532 }
a4a109c2
JD
1533
1534#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1535 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1536 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1537 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1538 ||
1539 (aligned &&
1540 (PL_origenviron[0] > s &&
1541 PL_origenviron[0] <=
1542 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1543 )
1544 {
9d419b5f 1545#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1546 s = PL_origenviron[0];
1547 while (*s) s++;
1548#endif
bd61b366 1549 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1550 /* Force copy of environment. */
1551 for (i = 1; PL_origenviron[i]; i++) {
1552 if (PL_origenviron[i] == s + 1
1553 ||
1554 (aligned &&
1555 (PL_origenviron[i] > s &&
1556 PL_origenviron[i] <=
1557 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1558 )
1559 {
1560 s = PL_origenviron[i];
1561 while (*s) s++;
1562 }
1563 else
1564 break;
54bfe034 1565 }
43c32782 1566 }
54bfe034 1567 }
a4a109c2
JD
1568#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1569
2d2af554 1570 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1571 }
1572
3280af22 1573 if (PL_do_undump) {
a0d0e21e
LW
1574
1575 /* Come here if running an undumped a.out. */
1576
3280af22
NIS
1577 PL_origfilename = savepv(argv[0]);
1578 PL_do_undump = FALSE;
a0d0e21e 1579 cxstack_ix = -1; /* start label stack again */
748a9306 1580 init_ids();
284167a5 1581 assert (!TAINT_get);
b7975bdd 1582 TAINT;
e2051532 1583 set_caret_X();
b7975bdd 1584 TAINT_NOT;
a0d0e21e
LW
1585 init_postdump_symbols(argc,argv,env);
1586 return 0;
1587 }
1588
3280af22 1589 if (PL_main_root) {
3280af22 1590 op_free(PL_main_root);
5f66b61c 1591 PL_main_root = NULL;
ff0cee69 1592 }
5f66b61c 1593 PL_main_start = NULL;
3280af22 1594 SvREFCNT_dec(PL_main_cv);
601f1833 1595 PL_main_cv = NULL;
79072805 1596
3280af22
NIS
1597 time(&PL_basetime);
1598 oldscope = PL_scopestack_ix;
599cee73 1599 PL_dowarn = G_WARN_OFF;
f86702cc 1600
14dd3ad8 1601 JMPENV_PUSH(ret);
6224f72b 1602 switch (ret) {
312caa8e 1603 case 0:
14dd3ad8 1604 parse_body(env,xsinit);
9ebf26ad 1605 if (PL_unitcheckav) {
3c10abe3 1606 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1607 }
1608 if (PL_checkav) {
ca7b837b 1609 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1610 call_list(oldscope, PL_checkav);
9ebf26ad 1611 }
14dd3ad8
GS
1612 ret = 0;
1613 break;
6224f72b
GS
1614 case 1:
1615 STATUS_ALL_FAILURE;
924ba076 1616 /* FALLTHROUGH */
6224f72b
GS
1617 case 2:
1618 /* my_exit() was called */
3280af22 1619 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1620 LEAVE;
1621 FREETMPS;
03d9f026 1622 SET_CURSTASH(PL_defstash);
9ebf26ad 1623 if (PL_unitcheckav) {
3c10abe3 1624 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1625 }
1626 if (PL_checkav) {
ca7b837b 1627 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1628 call_list(oldscope, PL_checkav);
9ebf26ad 1629 }
37038d91 1630 ret = STATUS_EXIT;
14dd3ad8 1631 break;
6224f72b 1632 case 3:
bf49b057 1633 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1634 ret = 1;
1635 break;
6224f72b 1636 }
14dd3ad8
GS
1637 JMPENV_POP;
1638 return ret;
1639}
1640
4a5df386
NC
1641/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1642 miniperl, and we need to see those flags reflected in the values here. */
1643
1644/* What this returns is subject to change. Use the public interface in Config.
1645 */
1646static void
1647S_Internals_V(pTHX_ CV *cv)
1648{
1649 dXSARGS;
1650#ifdef LOCAL_PATCH_COUNT
1651 const int local_patch_count = LOCAL_PATCH_COUNT;
1652#else
1653 const int local_patch_count = 0;
1654#endif
2dc296d2 1655 const int entries = 3 + local_patch_count;
4a5df386 1656 int i;
fe1c5936 1657 static const char non_bincompat_options[] =
4a5df386
NC
1658# ifdef DEBUGGING
1659 " DEBUGGING"
1660# endif
1661# ifdef NO_MATHOMS
0d311fbe 1662 " NO_MATHOMS"
4a5df386 1663# endif
59b86f4b
DM
1664# ifdef NO_HASH_SEED
1665 " NO_HASH_SEED"
1666# endif
3b0e4ee2
MB
1667# ifdef NO_TAINT_SUPPORT
1668 " NO_TAINT_SUPPORT"
1669# endif
cb26ef7a
MB
1670# ifdef PERL_BOOL_AS_CHAR
1671 " PERL_BOOL_AS_CHAR"
1672# endif
4a5df386
NC
1673# ifdef PERL_DISABLE_PMC
1674 " PERL_DISABLE_PMC"
1675# endif
1676# ifdef PERL_DONT_CREATE_GVSV
1677 " PERL_DONT_CREATE_GVSV"
1678# endif
9a044a43
NC
1679# ifdef PERL_EXTERNAL_GLOB
1680 " PERL_EXTERNAL_GLOB"
1681# endif
59b86f4b
DM
1682# ifdef PERL_HASH_FUNC_SIPHASH
1683 " PERL_HASH_FUNC_SIPHASH"
1684# endif
1685# ifdef PERL_HASH_FUNC_SDBM
1686 " PERL_HASH_FUNC_SDBM"
1687# endif
1688# ifdef PERL_HASH_FUNC_DJB2
1689 " PERL_HASH_FUNC_DJB2"
1690# endif
1691# ifdef PERL_HASH_FUNC_SUPERFAST
1692 " PERL_HASH_FUNC_SUPERFAST"
1693# endif
1694# ifdef PERL_HASH_FUNC_MURMUR3
1695 " PERL_HASH_FUNC_MURMUR3"
1696# endif
1697# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1698 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1699# endif
1700# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1701 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1702# endif
1703# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1704 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1705# endif
4a5df386
NC
1706# ifdef PERL_IS_MINIPERL
1707 " PERL_IS_MINIPERL"
1708# endif
1709# ifdef PERL_MALLOC_WRAP
1710 " PERL_MALLOC_WRAP"
1711# endif
1712# ifdef PERL_MEM_LOG
1713 " PERL_MEM_LOG"
1714# endif
1715# ifdef PERL_MEM_LOG_NOIMPL
1716 " PERL_MEM_LOG_NOIMPL"
1717# endif
2542212d
DM
1718# ifdef PERL_NEW_COPY_ON_WRITE
1719 " PERL_NEW_COPY_ON_WRITE"
1720# endif
59b86f4b
DM
1721# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1722 " PERL_PERTURB_KEYS_DETERMINISTIC"
1723# endif
1724# ifdef PERL_PERTURB_KEYS_DISABLED
1725 " PERL_PERTURB_KEYS_DISABLED"
1726# endif
1727# ifdef PERL_PERTURB_KEYS_RANDOM
1728 " PERL_PERTURB_KEYS_RANDOM"
1729# endif
c3cf41ec
NC
1730# ifdef PERL_PRESERVE_IVUV
1731 " PERL_PRESERVE_IVUV"
1732# endif
c051e30b
NC
1733# ifdef PERL_RELOCATABLE_INCPUSH
1734 " PERL_RELOCATABLE_INCPUSH"
1735# endif
4a5df386
NC
1736# ifdef PERL_USE_DEVEL
1737 " PERL_USE_DEVEL"
1738# endif
1739# ifdef PERL_USE_SAFE_PUTENV
1740 " PERL_USE_SAFE_PUTENV"
1741# endif
a3749cf3
NC
1742# ifdef UNLINK_ALL_VERSIONS
1743 " UNLINK_ALL_VERSIONS"
1744# endif
de618ee4
NC
1745# ifdef USE_ATTRIBUTES_FOR_PERLIO
1746 " USE_ATTRIBUTES_FOR_PERLIO"
1747# endif
4a5df386
NC
1748# ifdef USE_FAST_STDIO
1749 " USE_FAST_STDIO"
1750# endif
59b86f4b
DM
1751# ifdef USE_HASH_SEED_EXPLICIT
1752 " USE_HASH_SEED_EXPLICIT"
1753# endif
98548bdf
NC
1754# ifdef USE_LOCALE
1755 " USE_LOCALE"
1756# endif
98548bdf
NC
1757# ifdef USE_LOCALE_CTYPE
1758 " USE_LOCALE_CTYPE"
1759# endif
5a8d8935
NC
1760# ifdef USE_PERL_ATOF
1761 " USE_PERL_ATOF"
1762# endif
0d311fbe
NC
1763# ifdef USE_SITECUSTOMIZE
1764 " USE_SITECUSTOMIZE"
1765# endif
4a5df386
NC
1766 ;
1767 PERL_UNUSED_ARG(cv);
1768 PERL_UNUSED_ARG(items);
1769
1770 EXTEND(SP, entries);
1771
1772 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1773 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1774 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1775
1776#ifdef __DATE__
1777# ifdef __TIME__
1778 PUSHs(Perl_newSVpvn_flags(aTHX_
1779 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1780 SVs_TEMP));
1781# else
1782 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1783 SVs_TEMP));
1784# endif
1785#else
1786 PUSHs(&PL_sv_undef);
1787#endif
1788
4a5df386
NC
1789 for (i = 1; i <= local_patch_count; i++) {
1790 /* This will be an undef, if PL_localpatches[i] is NULL. */
1791 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1792 }
1793
1794 XSRETURN(entries);
1795}
1796
be71fc8f
NC
1797#define INCPUSH_UNSHIFT 0x01
1798#define INCPUSH_ADD_OLD_VERS 0x02
1799#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1800#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1801#define INCPUSH_NOT_BASEDIR 0x10
1802#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1803#define INCPUSH_ADD_SUB_DIRS \
1804 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1805
312caa8e 1806STATIC void *
14dd3ad8 1807S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1808{
27da23d5 1809 dVAR;
2f9285f8 1810 PerlIO *rsfp;
312caa8e 1811 int argc = PL_origargc;
8f42b153 1812 char **argv = PL_origargv;
e1ec3a88 1813 const char *scriptname = NULL;
312caa8e 1814 VOL bool dosearch = FALSE;
eb578fdb 1815 char c;
737c24fc 1816 bool doextract = FALSE;
bd61b366 1817 const char *cddir = NULL;
ab019eaa 1818#ifdef USE_SITECUSTOMIZE
20ef40cf 1819 bool minus_f = FALSE;
ab019eaa 1820#endif
95670bde 1821 SV *linestr_sv = NULL;
5486870f 1822 bool add_read_e_script = FALSE;
87606032 1823 U32 lex_start_flags = 0;
009d90df 1824
ca7b837b 1825 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1826
6224f72b 1827 init_main_stash();
54310121 1828
c7030b81
NC
1829 {
1830 const char *s;
6224f72b
GS
1831 for (argc--,argv++; argc > 0; argc--,argv++) {
1832 if (argv[0][0] != '-' || !argv[0][1])
1833 break;
6224f72b
GS
1834 s = argv[0]+1;
1835 reswitch:
47f56822 1836 switch ((c = *s)) {
729a02f2 1837 case 'C':
1d5472a9
GS
1838#ifndef PERL_STRICT_CR
1839 case '\r':
1840#endif
6224f72b
GS
1841 case ' ':
1842 case '0':
1843 case 'F':
1844 case 'a':
1845 case 'c':
1846 case 'd':
1847 case 'D':
1848 case 'h':
1849 case 'i':
1850 case 'l':
1851 case 'M':
1852 case 'm':
1853 case 'n':
1854 case 'p':
1855 case 's':
1856 case 'u':
1857 case 'U':
1858 case 'v':
599cee73
PM
1859 case 'W':
1860 case 'X':
6224f72b 1861 case 'w':
97bd5664 1862 if ((s = moreswitches(s)))
6224f72b
GS
1863 goto reswitch;
1864 break;
33b78306 1865
1dbad523 1866 case 't':
dc6d7f5c 1867#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1868 /* silently ignore */
dc6d7f5c 1869#elif defined(NO_TAINT_SUPPORT)
3231f579 1870 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1871 "Cowardly refusing to run with -t or -T flags");
1872#else
22f7c9c9 1873 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1874 if( !TAINTING_get ) {
1875 TAINT_WARN_set(TRUE);
1876 TAINTING_set(TRUE);
317ea90d 1877 }
284167a5 1878#endif
317ea90d
MS
1879 s++;
1880 goto reswitch;
6224f72b 1881 case 'T':
dc6d7f5c 1882#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1883 /* silently ignore */
dc6d7f5c 1884#elif defined(NO_TAINT_SUPPORT)
3231f579 1885 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1886 "Cowardly refusing to run with -t or -T flags");
1887#else
22f7c9c9 1888 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1889 TAINTING_set(TRUE);
1890 TAINT_WARN_set(FALSE);
1891#endif
6224f72b
GS
1892 s++;
1893 goto reswitch;
f86702cc 1894
bc9b29db
RH
1895 case 'E':
1896 PL_minus_E = TRUE;
924ba076 1897 /* FALLTHROUGH */
6224f72b 1898 case 'e':
f20b2998 1899 forbid_setid('e', FALSE);
3280af22 1900 if (!PL_e_script) {
396482e1 1901 PL_e_script = newSVpvs("");
5486870f 1902 add_read_e_script = TRUE;
6224f72b
GS
1903 }
1904 if (*++s)
3280af22 1905 sv_catpv(PL_e_script, s);
6224f72b 1906 else if (argv[1]) {
3280af22 1907 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1908 argc--,argv++;
1909 }
1910 else
47f56822 1911 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1912 sv_catpvs(PL_e_script, "\n");
6224f72b 1913 break;
afe37c7d 1914
20ef40cf 1915 case 'f':
f5542d3a 1916#ifdef USE_SITECUSTOMIZE
20ef40cf 1917 minus_f = TRUE;
f5542d3a 1918#endif
20ef40cf
GA
1919 s++;
1920 goto reswitch;
1921
6224f72b 1922 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1923 forbid_setid('I', FALSE);
bd61b366 1924 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1925 argc--,argv++;
1926 }
6224f72b 1927 if (s && *s) {
0df16ed7 1928 STRLEN len = strlen(s);
55b4bc1c 1929 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1930 }
1931 else
a67e862a 1932 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1933 break;
6224f72b 1934 case 'S':
f20b2998 1935 forbid_setid('S', FALSE);
6224f72b
GS
1936 dosearch = TRUE;
1937 s++;
1938 goto reswitch;
1939 case 'V':
7edfd0ef
NC
1940 {
1941 SV *opts_prog;
1942
7edfd0ef 1943 if (*++s != ':') {
37ca4a5b 1944 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1945 }
1946 else {
1947 ++s;
1948 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1949 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1950 0, s, 0);
1951 s += strlen(s);
1952 }
37ca4a5b 1953 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1954 /* don't look for script or read stdin */
1955 scriptname = BIT_BUCKET;
1956 goto reswitch;
6224f72b 1957 }
6224f72b 1958 case 'x':
737c24fc 1959 doextract = TRUE;
6224f72b 1960 s++;
304334da 1961 if (*s)
f4c556ac 1962 cddir = s;
6224f72b
GS
1963 break;
1964 case 0:
1965 break;
1966 case '-':
1967 if (!*++s || isSPACE(*s)) {
1968 argc--,argv++;
1969 goto switch_end;
1970 }
ee8bc8b7
NC
1971 /* catch use of gnu style long options.
1972 Both of these exit immediately. */
1973 if (strEQ(s, "version"))
1974 minus_v();
1975 if (strEQ(s, "help"))
1976 usage();
6224f72b 1977 s--;
924ba076 1978 /* FALLTHROUGH */
6224f72b 1979 default:
cea2e8a9 1980 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1981 }
1982 }
c7030b81
NC
1983 }
1984
6224f72b 1985 switch_end:
54310121 1986
c7030b81
NC
1987 {
1988 char *s;
1989
f675dbe5
CB
1990 if (
1991#ifndef SECURE_INTERNAL_GETENV
284167a5 1992 !TAINTING_get &&
f675dbe5 1993#endif
cf756827 1994 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1995 {
74288ac8
GS
1996 while (isSPACE(*s))
1997 s++;
317ea90d 1998 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 1999#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2000 /* silently ignore */
dc6d7f5c 2001#elif defined(NO_TAINT_SUPPORT)
3231f579 2002 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2003 "Cowardly refusing to run with -t or -T flags");
2004#else
22f7c9c9 2005 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2006 TAINTING_set(TRUE);
2007 TAINT_WARN_set(FALSE);
2008#endif
317ea90d 2009 }
74288ac8 2010 else {
bd61b366 2011 char *popt_copy = NULL;
74288ac8 2012 while (s && *s) {
54913509 2013 const char *d;
74288ac8
GS
2014 while (isSPACE(*s))
2015 s++;
2016 if (*s == '-') {
2017 s++;
2018 if (isSPACE(*s))
2019 continue;
2020 }
4ea8f8fb 2021 d = s;
74288ac8
GS
2022 if (!*s)
2023 break;
2b622f1a 2024 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2025 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2026 while (++s && *s) {
2027 if (isSPACE(*s)) {
cf756827 2028 if (!popt_copy) {
bfa6c418
NC
2029 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2030 s = popt_copy + (s - d);
2031 d = popt_copy;
cf756827 2032 }
4ea8f8fb
MS
2033 *s++ = '\0';
2034 break;
2035 }
2036 }
1c4db469 2037 if (*d == 't') {
dc6d7f5c 2038#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2039 /* silently ignore */
dc6d7f5c 2040#elif defined(NO_TAINT_SUPPORT)
3231f579 2041 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2042 "Cowardly refusing to run with -t or -T flags");
2043#else
2044 if( !TAINTING_get) {
2045 TAINT_WARN_set(TRUE);
2046 TAINTING_set(TRUE);
317ea90d 2047 }
284167a5 2048#endif
1c4db469 2049 } else {
97bd5664 2050 moreswitches(d);
1c4db469 2051 }
6224f72b 2052 }
6224f72b
GS
2053 }
2054 }
c7030b81 2055 }
a0d0e21e 2056
c29067d7
CH
2057 /* Set $^X early so that it can be used for relocatable paths in @INC */
2058 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2059 assert (!TAINT_get);
c29067d7 2060 TAINT;
e2051532 2061 set_caret_X();
c29067d7
CH
2062 TAINT_NOT;
2063
43c0c913 2064#if defined(USE_SITECUSTOMIZE)
20ef40cf 2065 if (!minus_f) {
43c0c913 2066 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2067 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2068 ie a q() operator with a NUL byte as a the delimiter. This avoids
2069 problems with pathnames containing (say) ' */
43c0c913
NC
2070# ifdef PERL_IS_MINIPERL
2071 AV *const inc = GvAV(PL_incgv);
2072 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2073
2074 if (inc0) {
15870c5c
NC
2075 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2076 it should be reported immediately as a build failure. */
43c0c913
NC
2077 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2078 Perl_newSVpvf(aTHX_
5de87db5 2079 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2080 "do {local $!; -f $f }"
2081 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2082 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2083 }
2084# else
2085 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2086 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2087 if (raw_sitelib) {
2088 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2089 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2090 INCPUSH_CAN_RELOCATE);
2091 const char *const sitelib = SvPVX(sitelib_sv);
2092 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2093 Perl_newSVpvf(aTHX_
2094 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2095 0, SVfARG(sitelib), 0,
2096 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2097 assert (SvREFCNT(sitelib_sv) == 1);
2098 SvREFCNT_dec(sitelib_sv);
2099 }
43c0c913 2100# endif
20ef40cf
GA
2101 }
2102#endif
2103
6224f72b
GS
2104 if (!scriptname)
2105 scriptname = argv[0];
3280af22 2106 if (PL_e_script) {
6224f72b
GS
2107 argc++,argv--;
2108 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2109 }
bd61b366 2110 else if (scriptname == NULL) {
6224f72b
GS
2111#ifdef MSDOS
2112 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2113 moreswitches("h");
6224f72b
GS
2114#endif
2115 scriptname = "-";
2116 }
2117
284167a5 2118 assert (!TAINT_get);
2cace6ac 2119 init_perllib();
6224f72b 2120
a52eba0e 2121 {
f20b2998 2122 bool suidscript = FALSE;
829372d3 2123
8d113837 2124 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2125 if (!rsfp) {
2126 rsfp = PerlIO_stdin();
87606032 2127 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2128 }
6224f72b 2129
b24bc095 2130 validate_suid(rsfp);
6224f72b 2131
64ca3a65 2132#ifndef PERL_MICRO
a52eba0e
NC
2133# if defined(SIGCHLD) || defined(SIGCLD)
2134 {
2135# ifndef SIGCHLD
2136# define SIGCHLD SIGCLD
2137# endif
2138 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2139 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2140 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2141 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2142 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2143 }
0b5b802d 2144 }
a52eba0e 2145# endif
64ca3a65 2146#endif
0b5b802d 2147
737c24fc 2148 if (doextract) {
faef540c 2149
f20b2998 2150 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2151 setuid scripts. */
2152 forbid_setid('x', suidscript);
f20b2998 2153 /* Hence you can't get here if suidscript is true */
faef540c 2154
95670bde
NC
2155 linestr_sv = newSV_type(SVt_PV);
2156 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2157 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2158 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2159 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2160 }
f4c556ac 2161 }
6224f72b 2162
ea726b52 2163 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2164 CvUNIQUE_on(PL_compcv);
2165
eacbb379 2166 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2167
dd69841b
BB
2168 PL_isarev = newHV();
2169
0c4f7ff0 2170 boot_core_PerlIO();
6224f72b 2171 boot_core_UNIVERSAL();
e1a479c5 2172 boot_core_mro();
4a5df386 2173 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2174
2175 if (xsinit)
acfe0abc 2176 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2177#ifndef PERL_MICRO
739a0b84 2178#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2179 init_os_extras();
6224f72b 2180#endif
64ca3a65 2181#endif
6224f72b 2182
29209bc5 2183#ifdef USE_SOCKS
1b9c9cf5
DH
2184# ifdef HAS_SOCKS5_INIT
2185 socks5_init(argv[0]);
2186# else
29209bc5 2187 SOCKSinit(argv[0]);
1b9c9cf5 2188# endif
ac27b0f5 2189#endif
29209bc5 2190
6224f72b
GS
2191 init_predump_symbols();
2192 /* init_postdump_symbols not currently designed to be called */
2193 /* more than once (ENV isn't cleared first, for example) */
2194 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2195 if (!PL_do_undump)
6224f72b
GS
2196 init_postdump_symbols(argc,argv,env);
2197
27da23d5
JH
2198 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2199 * or explicitly in some platforms.
085a54d9 2200 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2201 * look like the user wants to use UTF-8. */
a0fd4948 2202#if defined(__SYMBIAN32__)
27da23d5
JH
2203 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2204#endif
e27b5b51 2205# ifndef PERL_IS_MINIPERL
06e66572
JH
2206 if (PL_unicode) {
2207 /* Requires init_predump_symbols(). */
a05d7ebb 2208 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2209 IO* io;
2210 PerlIO* fp;
2211 SV* sv;
2212
a05d7ebb 2213 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2214 * and the default open disciplines. */
a05d7ebb
JH
2215 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2216 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2217 (fp = IoIFP(io)))
2218 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2219 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2220 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2221 (fp = IoOFP(io)))
2222 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2223 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2224 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2225 (fp = IoOFP(io)))
2226 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2227 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2228 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2229 SVt_PV)))) {
a05d7ebb
JH
2230 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2231 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2232 if (in) {
2233 if (out)
76f68e9b 2234 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2235 else
76f68e9b 2236 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2237 }
2238 else if (out)
76f68e9b 2239 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2240 SvSETMAGIC(sv);
2241 }
b310b053
JH
2242 }
2243 }
e27b5b51 2244#endif
b310b053 2245
c7030b81
NC
2246 {
2247 const char *s;
4ffa73a3
JH
2248 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2249 if (strEQ(s, "unsafe"))
2250 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2251 else if (strEQ(s, "safe"))
2252 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2253 else
2254 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2255 }
c7030b81 2256 }
4ffa73a3 2257
81d86705 2258
87606032 2259 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2260 SvREFCNT_dec(linestr_sv);
95670bde 2261
219f7226 2262 PL_subname = newSVpvs("main");
6224f72b 2263
5486870f
DM
2264 if (add_read_e_script)
2265 filter_add(read_e_script, NULL);
2266
6224f72b
GS
2267 /* now parse the script */
2268
93189314 2269 SETERRNO(0,SS_NORMAL);
28ac2b49 2270 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2271 if (PL_minus_c)
cea2e8a9 2272 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2273 else {
cea2e8a9 2274 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2275 PL_origfilename);
6224f72b
GS
2276 }
2277 }
57843af0 2278 CopLINE_set(PL_curcop, 0);
03d9f026 2279 SET_CURSTASH(PL_defstash);
3280af22
NIS
2280 if (PL_e_script) {
2281 SvREFCNT_dec(PL_e_script);
a0714e2c 2282 PL_e_script = NULL;
6224f72b
GS
2283 }
2284
3280af22 2285 if (PL_do_undump)
6224f72b
GS
2286 my_unexec();
2287
57843af0
GS
2288 if (isWARN_ONCE) {
2289 SAVECOPFILE(PL_curcop);
2290 SAVECOPLINE(PL_curcop);
3280af22 2291 gv_check(PL_defstash);
57843af0 2292 }
6224f72b
GS
2293
2294 LEAVE;
2295 FREETMPS;
2296
2297#ifdef MYMALLOC
f6a607bc
RGS
2298 {
2299 const char *s;
96e440d2
JH
2300 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2301 dump_mstats("after compilation:");
f6a607bc 2302 }
6224f72b
GS
2303#endif
2304
2305 ENTER;
febb3a6d 2306 PL_restartjmpenv = NULL;
3280af22 2307 PL_restartop = 0;
312caa8e 2308 return NULL;
6224f72b
GS
2309}
2310
954c1994
GS
2311/*
2312=for apidoc perl_run
2313
2314Tells a Perl interpreter to run. See L<perlembed>.
2315
2316=cut
2317*/
2318
6224f72b 2319int
0cb96387 2320perl_run(pTHXx)
6224f72b 2321{
6224f72b 2322 I32 oldscope;
14dd3ad8 2323 int ret = 0;
db36c5a1 2324 dJMPENV;
6224f72b 2325
7918f24d
NC
2326 PERL_ARGS_ASSERT_PERL_RUN;
2327#ifndef MULTIPLICITY
ed6c66dd 2328 PERL_UNUSED_ARG(my_perl);
7918f24d 2329#endif
9d4ba2ae 2330
3280af22 2331 oldscope = PL_scopestack_ix;
96e176bf
CL
2332#ifdef VMS
2333 VMSISH_HUSHED = 0;
2334#endif
6224f72b 2335
14dd3ad8 2336 JMPENV_PUSH(ret);
6224f72b
GS
2337 switch (ret) {
2338 case 1:
2339 cxstack_ix = -1; /* start context stack again */
312caa8e 2340 goto redo_body;
14dd3ad8 2341 case 0: /* normal completion */
14dd3ad8
GS
2342 redo_body:
2343 run_body(oldscope);
924ba076 2344 /* FALLTHROUGH */
14dd3ad8 2345 case 2: /* my_exit() */
3280af22 2346 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2347 LEAVE;
2348 FREETMPS;
03d9f026 2349 SET_CURSTASH(PL_defstash);
3a1ee7e8 2350 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2351 PL_endav && !PL_minus_c) {
ca7b837b 2352 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2353 call_list(oldscope, PL_endav);
9ebf26ad 2354 }
6224f72b
GS
2355#ifdef MYMALLOC
2356 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2357 dump_mstats("after execution: ");
2358#endif
37038d91 2359 ret = STATUS_EXIT;
14dd3ad8 2360 break;
6224f72b 2361 case 3:
312caa8e
CS
2362 if (PL_restartop) {
2363 POPSTACK_TO(PL_mainstack);
2364 goto redo_body;
6224f72b 2365 }
5637ef5b 2366 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2367 FREETMPS;
14dd3ad8
GS
2368 ret = 1;
2369 break;
6224f72b
GS
2370 }
2371
14dd3ad8
GS
2372 JMPENV_POP;
2373 return ret;
312caa8e
CS
2374}
2375
dd374669 2376STATIC void
14dd3ad8
GS
2377S_run_body(pTHX_ I32 oldscope)
2378{
d3b97530
DM
2379 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2380 PL_sawampersand ? "Enabling" : "Omitting",
2381 (unsigned int)(PL_sawampersand)));
6224f72b 2382
3280af22 2383 if (!PL_restartop) {
cf2782cd 2384#ifdef DEBUGGING
f0e3f042
CS
2385 if (DEBUG_x_TEST || DEBUG_B_TEST)
2386 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2387 if (!DEBUG_q_TEST)
2388 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2389#endif
6224f72b 2390
3280af22 2391 if (PL_minus_c) {
bf49b057 2392 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2393 my_exit(0);
2394 }
3280af22 2395 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2396 PL_DBsingle_iv = 1;
9ebf26ad 2397 if (PL_initav) {
ca7b837b 2398 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2399 call_list(oldscope, PL_initav);
9ebf26ad 2400 }
f1fac472 2401#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2402 if (PL_main_root && PL_main_root->op_slabbed)
2403 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2404#endif
6224f72b
GS
2405 }
2406
2407 /* do it */
2408
ca7b837b 2409 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2410
3280af22 2411 if (PL_restartop) {
febb3a6d 2412 PL_restartjmpenv = NULL;
533c011a 2413 PL_op = PL_restartop;
3280af22 2414 PL_restartop = 0;
cea2e8a9 2415 CALLRUNOPS(aTHX);
6224f72b 2416 }
3280af22
NIS
2417 else if (PL_main_start) {
2418 CvDEPTH(PL_main_cv) = 1;
533c011a 2419 PL_op = PL_main_start;
cea2e8a9 2420 CALLRUNOPS(aTHX);
6224f72b 2421 }
f6b3007c 2422 my_exit(0);
a25b5927 2423 assert(0); /* NOTREACHED */
6224f72b
GS
2424}
2425
954c1994 2426/*
ccfc67b7
JH
2427=head1 SV Manipulation Functions
2428
954c1994
GS
2429=for apidoc p||get_sv
2430
64ace3f8 2431Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2432C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2433Perl variable does not exist then it will be created. If C<flags> is zero
2434and the variable does not exist then NULL is returned.
954c1994
GS
2435
2436=cut
2437*/
2438
6224f72b 2439SV*
64ace3f8 2440Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2441{
2442 GV *gv;
7918f24d
NC
2443
2444 PERL_ARGS_ASSERT_GET_SV;
2445
64ace3f8 2446 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2447 if (gv)
2448 return GvSV(gv);
a0714e2c 2449 return NULL;
6224f72b
GS
2450}
2451
954c1994 2452/*
ccfc67b7
JH
2453=head1 Array Manipulation Functions
2454
954c1994
GS
2455=for apidoc p||get_av
2456
f0b90de1
SF
2457Returns the AV of the specified Perl global or package array with the given
2458name (so it won't work on lexical variables). C<flags> are passed
72d33970 2459to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2460Perl variable does not exist then it will be created. If C<flags> is zero
2461and the variable does not exist then NULL is returned.
954c1994 2462
f0b90de1
SF
2463Perl equivalent: C<@{"$name"}>.
2464
954c1994
GS
2465=cut
2466*/
2467
6224f72b 2468AV*
cbfd0a87 2469Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2470{
cbfd0a87 2471 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2472
2473 PERL_ARGS_ASSERT_GET_AV;
2474
cbfd0a87 2475 if (flags)
6224f72b
GS
2476 return GvAVn(gv);
2477 if (gv)
2478 return GvAV(gv);
7d49f689 2479 return NULL;
6224f72b
GS
2480}
2481
954c1994 2482/*
ccfc67b7
JH
2483=head1 Hash Manipulation Functions
2484
954c1994
GS
2485=for apidoc p||get_hv
2486
6673a63c 2487Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2488C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2489Perl variable does not exist then it will be created. If C<flags> is zero
2490and the variable does not exist then NULL is returned.
954c1994
GS
2491
2492=cut
2493*/
2494
6224f72b 2495HV*
6673a63c 2496Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2497{
6673a63c 2498 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2499
2500 PERL_ARGS_ASSERT_GET_HV;
2501
6673a63c 2502 if (flags)
a0d0e21e
LW
2503 return GvHVn(gv);
2504 if (gv)
2505 return GvHV(gv);
5c284bb0 2506 return NULL;
a0d0e21e
LW
2507}
2508
954c1994 2509/*
ccfc67b7
JH
2510=head1 CV Manipulation Functions
2511
780a5241
NC
2512=for apidoc p||get_cvn_flags
2513
2514Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2515C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2516exist then it will be declared (which has the same effect as saying
2517C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2518then NULL is returned.
2519
954c1994
GS
2520=for apidoc p||get_cv
2521
780a5241 2522Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2523
2524=cut
2525*/
2526
a0d0e21e 2527CV*
780a5241 2528Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2529{
780a5241 2530 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2531
2532 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2533
334dda80
FC
2534 /* XXX this is probably not what they think they're getting.
2535 * It has the same effect as "sub name;", i.e. just a forward
2536 * declaration! */
780a5241 2537 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2538 return newSTUB(gv,0);
780a5241 2539 }
a0d0e21e 2540 if (gv)
8ebc5c01 2541 return GvCVu(gv);
601f1833 2542 return NULL;
a0d0e21e
LW
2543}
2544
2c67934f
NC
2545/* Nothing in core calls this now, but we can't replace it with a macro and
2546 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2547CV*
2548Perl_get_cv(pTHX_ const char *name, I32 flags)
2549{
7918f24d
NC
2550 PERL_ARGS_ASSERT_GET_CV;
2551
780a5241
NC
2552 return get_cvn_flags(name, strlen(name), flags);
2553}
2554
79072805
LW
2555/* Be sure to refetch the stack pointer after calling these routines. */
2556
954c1994 2557/*
ccfc67b7
JH
2558
2559=head1 Callback Functions
2560
954c1994
GS
2561=for apidoc p||call_argv
2562
f0b90de1 2563Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2564with C<argv> (a NULL-terminated array of strings) as arguments. See
2565L<perlcall>.
f0b90de1
SF
2566
2567Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2568
2569=cut
2570*/
2571
a0d0e21e 2572I32
5aaab254 2573Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2574
8ac85365
NIS
2575 /* See G_* flags in cop.h */
2576 /* null terminated arg list */
8990e307 2577{
a0d0e21e 2578 dSP;
8990e307 2579
7918f24d
NC
2580 PERL_ARGS_ASSERT_CALL_ARGV;
2581
924508f0 2582 PUSHMARK(SP);
a0d0e21e 2583 if (argv) {
8990e307 2584 while (*argv) {
6e449a3a 2585 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2586 argv++;
2587 }
a0d0e21e 2588 PUTBACK;
8990e307 2589 }
864dbfa3 2590 return call_pv(sub_name, flags);
8990e307
LW
2591}
2592
954c1994
GS
2593/*
2594=for apidoc p||call_pv
2595
2596Performs a callback to the specified Perl sub. See L<perlcall>.
2597
2598=cut
2599*/
2600
a0d0e21e 2601I32
864dbfa3 2602Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2603 /* name of the subroutine */
2604 /* See G_* flags in cop.h */
a0d0e21e 2605{
7918f24d
NC
2606 PERL_ARGS_ASSERT_CALL_PV;
2607
0da0e728 2608 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2609}
2610
954c1994
GS
2611/*
2612=for apidoc p||call_method
2613
2614Performs a callback to the specified Perl method. The blessed object must
2615be on the stack. See L<perlcall>.
2616
2617=cut
2618*/
2619
a0d0e21e 2620I32
864dbfa3 2621Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2622 /* name of the subroutine */
2623 /* See G_* flags in cop.h */
a0d0e21e 2624{
46ca9bac 2625 STRLEN len;
c106c2be 2626 SV* sv;
7918f24d
NC
2627 PERL_ARGS_ASSERT_CALL_METHOD;
2628
46ca9bac 2629 len = strlen(methname);
c106c2be
RZ
2630 sv = flags & G_METHOD_NAMED
2631 ? sv_2mortal(newSVpvn_share(methname, len,0))
2632 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2633
c106c2be 2634 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2635}
2636
2637/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2638/*
2639=for apidoc p||call_sv
2640
2641Performs a callback to the Perl sub whose name is in the SV. See
2642L<perlcall>.
2643
2644=cut
2645*/
2646
a0d0e21e 2647I32
001d637e 2648Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2649 /* See G_* flags in cop.h */
a0d0e21e 2650{
27da23d5 2651 dVAR; dSP;
a0d0e21e 2652 LOGOP myop; /* fake syntax tree node */
b46e009d 2653 METHOP method_op;
aa689395 2654 I32 oldmark;
8ea43dc8 2655 VOL I32 retval = 0;
a0d0e21e 2656 I32 oldscope;
54310121 2657 bool oldcatch = CATCH_GET;
6224f72b 2658 int ret;
c4420975 2659 OP* const oldop = PL_op;
db36c5a1 2660 dJMPENV;
1e422769 2661
7918f24d
NC
2662 PERL_ARGS_ASSERT_CALL_SV;
2663
a0d0e21e
LW
2664 if (flags & G_DISCARD) {
2665 ENTER;
2666 SAVETMPS;
2667 }
2f8edad0
NC
2668 if (!(flags & G_WANT)) {
2669 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2670 */
2671 flags |= G_SCALAR;
2672 }
a0d0e21e 2673
aa689395 2674 Zero(&myop, 1, LOGOP);
f51d4af5 2675 if (!(flags & G_NOARGS))
aa689395 2676 myop.op_flags |= OPf_STACKED;
4f911530 2677 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2678 SAVEOP();
533c011a 2679 PL_op = (OP*)&myop;
aa689395 2680
3280af22 2681 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2682 if (!(flags & G_METHOD_NAMED))
2683 *++PL_stack_sp = sv;
aa689395 2684 oldmark = TOPMARK;
3280af22 2685 oldscope = PL_scopestack_ix;
a0d0e21e 2686
3280af22 2687 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2688 /* Handle first BEGIN of -d. */
3280af22 2689 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2690 /* Try harder, since this may have been a sighandler, thus
2691 * curstash may be meaningless. */
ea726b52 2692 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2693 && !(flags & G_NODEBUG))
5ff48db8 2694 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2695
c106c2be 2696 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2697 Zero(&method_op, 1, METHOP);
2698 method_op.op_next = (OP*)&myop;
2699 PL_op = (OP*)&method_op;
c106c2be 2700 if ( flags & G_METHOD_NAMED ) {
b46e009d 2701 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2702 method_op.op_type = OP_METHOD_NAMED;
2703 method_op.op_u.op_meth_sv = sv;
c106c2be 2704 } else {
b46e009d 2705 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2706 method_op.op_type = OP_METHOD;
c106c2be
RZ
2707 }
2708 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2709 myop.op_type = OP_ENTERSUB;
968b3946
GS
2710 }
2711
312caa8e 2712 if (!(flags & G_EVAL)) {
0cdb2077 2713 CATCH_SET(TRUE);
d6f07c05 2714 CALL_BODY_SUB((OP*)&myop);
312caa8e 2715 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2716 CATCH_SET(oldcatch);
312caa8e
CS
2717 }
2718 else {
d78bda3d 2719 myop.op_other = (OP*)&myop;
3280af22 2720 PL_markstack_ptr--;
edb2152a 2721 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2722 PL_markstack_ptr++;
a0d0e21e 2723
14dd3ad8 2724 JMPENV_PUSH(ret);
edb2152a 2725
6224f72b
GS
2726 switch (ret) {
2727 case 0:
14dd3ad8 2728 redo_body:
d6f07c05 2729 CALL_BODY_SUB((OP*)&myop);
312caa8e 2730 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2731 if (!(flags & G_KEEPERR)) {
ab69dbc2 2732 CLEAR_ERRSV();
8433848b 2733 }
a0d0e21e 2734 break;
6224f72b 2735 case 1:
f86702cc 2736 STATUS_ALL_FAILURE;
924ba076 2737 /* FALLTHROUGH */
6224f72b 2738 case 2:
a0d0e21e 2739 /* my_exit() was called */
03d9f026 2740 SET_CURSTASH(PL_defstash);
a0d0e21e 2741 FREETMPS;
14dd3ad8 2742 JMPENV_POP;
f86702cc 2743 my_exit_jump();
a25b5927 2744 assert(0); /* NOTREACHED */
6224f72b 2745 case 3:
3280af22 2746 if (PL_restartop) {
febb3a6d 2747 PL_restartjmpenv = NULL;
533c011a 2748 PL_op = PL_restartop;
3280af22 2749 PL_restartop = 0;
312caa8e 2750 goto redo_body;
a0d0e21e 2751 }
3280af22 2752 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2753 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2754 retval = 0;
2755 else {
2756 retval = 1;
3280af22 2757 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2758 }
312caa8e 2759 break;
a0d0e21e 2760 }
a0d0e21e 2761
edb2152a
NC
2762 if (PL_scopestack_ix > oldscope)
2763 delete_eval_scope();
14dd3ad8 2764 JMPENV_POP;
a0d0e21e 2765 }
1e422769 2766
a0d0e21e 2767 if (flags & G_DISCARD) {
3280af22 2768 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2769 retval = 0;
2770 FREETMPS;
2771 LEAVE;
2772 }
533c011a 2773 PL_op = oldop;
a0d0e21e
LW
2774 return retval;
2775}
2776
6e72f9df 2777/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2778
954c1994
GS
2779/*
2780=for apidoc p||eval_sv
2781
72d33970
FC
2782Tells Perl to C<eval> the string in the SV. It supports the same flags
2783as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2784
2785=cut
2786*/
2787
a0d0e21e 2788I32
864dbfa3 2789Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2790
8ac85365 2791 /* See G_* flags in cop.h */
a0d0e21e 2792{
97aff369 2793 dVAR;
924508f0 2794 dSP;
a0d0e21e 2795 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2796 VOL I32 oldmark = SP - PL_stack_base;
2797 VOL I32 retval = 0;
6224f72b 2798 int ret;
c4420975 2799 OP* const oldop = PL_op;
db36c5a1 2800 dJMPENV;
84902520 2801
7918f24d
NC
2802 PERL_ARGS_ASSERT_EVAL_SV;
2803
4633a7c4
LW
2804 if (flags & G_DISCARD) {
2805 ENTER;
2806 SAVETMPS;
2807 }
2808
462e5cf6 2809 SAVEOP();
533c011a 2810 PL_op = (OP*)&myop;
5ff48db8 2811 Zero(&myop, 1, UNOP);
3280af22
NIS
2812 EXTEND(PL_stack_sp, 1);
2813 *++PL_stack_sp = sv;
79072805 2814
4633a7c4
LW
2815 if (!(flags & G_NOARGS))
2816 myop.op_flags = OPf_STACKED;
6e72f9df 2817 myop.op_type = OP_ENTEREVAL;
4f911530 2818 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2819 if (flags & G_KEEPERR)
2820 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2821
2822 if (flags & G_RE_REPARSING)
2823 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2824
dedbcade
DM
2825 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2826 * before a PUSHEVAL, which corrupts the stack after a croak */
2827 TAINT_PROPER("eval_sv()");
2828
14dd3ad8 2829 JMPENV_PUSH(ret);
6224f72b
GS
2830 switch (ret) {
2831 case 0:
14dd3ad8 2832 redo_body:
2ba65d5f
DM
2833 if (PL_op == (OP*)(&myop)) {
2834 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2835 if (!PL_op)
2836 goto fail; /* failed in compilation */
2837 }
4aca2f62 2838 CALLRUNOPS(aTHX);
312caa8e 2839 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2840 if (!(flags & G_KEEPERR)) {
ab69dbc2 2841 CLEAR_ERRSV();
8433848b 2842 }
4633a7c4 2843 break;
6224f72b 2844 case 1:
f86702cc 2845 STATUS_ALL_FAILURE;
924ba076 2846 /* FALLTHROUGH */
6224f72b 2847 case 2:
4633a7c4 2848 /* my_exit() was called */
03d9f026 2849 SET_CURSTASH(PL_defstash);
4633a7c4 2850 FREETMPS;
14dd3ad8 2851 JMPENV_POP;
f86702cc 2852 my_exit_jump();
a25b5927 2853 assert(0); /* NOTREACHED */
6224f72b 2854 case 3:
3280af22 2855 if (PL_restartop) {
febb3a6d 2856 PL_restartjmpenv = NULL;
533c011a 2857 PL_op = PL_restartop;
3280af22 2858 PL_restartop = 0;
312caa8e 2859 goto redo_body;
4633a7c4 2860 }
4aca2f62 2861 fail:
3280af22 2862 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2863 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2864 retval = 0;
2865 else {
2866 retval = 1;
3280af22 2867 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2868 }
312caa8e 2869 break;
4633a7c4
LW
2870 }
2871
14dd3ad8 2872 JMPENV_POP;
4633a7c4 2873 if (flags & G_DISCARD) {
3280af22 2874 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2875 retval = 0;
2876 FREETMPS;
2877 LEAVE;
2878 }
533c011a 2879 PL_op = oldop;
4633a7c4
LW
2880 return retval;
2881}
2882
954c1994
GS
2883/*
2884=for apidoc p||eval_pv
2885
422791e4 2886Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2887
2888=cut
2889*/
2890
137443ea 2891SV*
864dbfa3 2892Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2893{
137443ea
PP
2894 SV* sv = newSVpv(p, 0);
2895
7918f24d
NC
2896 PERL_ARGS_ASSERT_EVAL_PV;
2897
864dbfa3 2898 eval_sv(sv, G_SCALAR);
137443ea
PP
2899 SvREFCNT_dec(sv);
2900
ed1786ad
DD
2901 {
2902 dSP;
2903 sv = POPs;
2904 PUTBACK;
2905 }
137443ea 2906
eed484f9
DD
2907 /* just check empty string or undef? */
2908 if (croak_on_error) {
2909 SV * const errsv = ERRSV;
2910 if(SvTRUE_NN(errsv))
2911 /* replace with croak_sv? */
2912 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2913 }
137443ea
PP
2914
2915 return sv;
2916}
2917
4633a7c4
LW
2918/* Require a module. */
2919
954c1994 2920/*
ccfc67b7
JH
2921=head1 Embedding Functions
2922
954c1994
GS
2923=for apidoc p||require_pv
2924
7d3fb230
BS
2925Tells Perl to C<require> the file named by the string argument. It is
2926analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2927implemented that way; consider using load_module instead.
954c1994 2928
7d3fb230 2929=cut */
954c1994 2930
4633a7c4 2931void
864dbfa3 2932Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2933{
d3acc0f7 2934 dSP;
97aff369 2935 SV* sv;
7918f24d
NC
2936
2937 PERL_ARGS_ASSERT_REQUIRE_PV;
2938
e788e7d3 2939 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2940 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2941 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2942 POPSTACK;
79072805
LW
2943}
2944
76e3520e 2945STATIC void
b6f82619 2946S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2947{
ab821d7f 2948 /* This message really ought to be max 23 lines.
75c72d73 2949 * Removed -h because the user already knows that option. Others? */
fb73857a 2950
1566c39d
NC
2951 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2952 minimum of 509 character string literals. */
27da23d5 2953 static const char * const usage_msg[] = {
1566c39d
NC
2954" -0[octal] specify record separator (\\0, if no argument)\n"
2955" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2956" -C[number/list] enables the listed Unicode features\n"
2957" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2958" -d[:debugger] run program under debugger\n"
2959" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2960" -e program one line of program (several -e's allowed, omit programfile)\n"
2961" -E program like -e, but enables all optional features\n"
2962" -f don't do $sitelib/sitecustomize.pl at startup\n"
2963" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2964" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2965" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2966" -l[octal] enable line ending processing, specifies line terminator\n"
2967" -[mM][-]module execute \"use/no module...\" before executing program\n"
2968" -n assume \"while (<>) { ... }\" loop around program\n"
2969" -p assume loop like -n but print line also, like sed\n"
2970" -s enable rudimentary parsing for switches after programfile\n"
2971" -S look for programfile using PATH environment variable\n",
2972" -t enable tainting warnings\n"
2973" -T enable tainting checks\n"
2974" -u dump core after parsing program\n"
2975" -U allow unsafe operations\n"
2976" -v print version, patchlevel and license\n"
2977" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2978" -w enable many useful warnings\n"
1566c39d
NC
2979" -W enable all warnings\n"
2980" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2981" -X disable all warnings\n"
2982" \n"
2983"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2984NULL
2985};
27da23d5 2986 const char * const *p = usage_msg;
1566c39d 2987 PerlIO *out = PerlIO_stdout();
fb73857a 2988
1566c39d
NC
2989 PerlIO_printf(out,
2990 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2991 PL_origargv[0]);
fb73857a 2992 while (*p)
1566c39d 2993 PerlIO_puts(out, *p++);
b6f82619 2994 my_exit(0);
4633a7c4
LW
2995}
2996
b4ab917c
DM
2997/* convert a string of -D options (or digits) into an int.
2998 * sets *s to point to the char after the options */
2999
3000#ifdef DEBUGGING
3001int
e1ec3a88 3002Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3003{
27da23d5 3004 static const char * const usage_msgd[] = {
651b8f1a
NC
3005 " Debugging flag values: (see also -d)\n"
3006 " p Tokenizing and parsing (with v, displays parse stack)\n"
3007 " s Stack snapshots (with v, displays all stacks)\n"
3008 " l Context (loop) stack processing\n"
3009 " t Trace execution\n"
3010 " o Method and overloading resolution\n",
3011 " c String/numeric conversions\n"
3012 " P Print profiling info, source file input state\n"
3013 " m Memory and SV allocation\n"
3014 " f Format processing\n"
3015 " r Regular expression parsing and execution\n"
3016 " x Syntax tree dump\n",
3017 " u Tainting checks\n"
3018 " H Hash dump -- usurps values()\n"
3019 " X Scratchpad allocation\n"
3020 " D Cleaning up\n"
56967202 3021 " S Op slab allocation\n"
651b8f1a
NC
3022 " T Tokenising\n"
3023 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3024 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3025 " v Verbose: use in conjunction with other flags\n"
3026 " C Copy On Write\n"
3027 " A Consistency checks on internal structures\n"
3028 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3029 " M trace smart match resolution\n"
3030 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3031 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3032 NULL
3033 };
b4ab917c 3034 int i = 0;
7918f24d
NC
3035
3036 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3037
b4ab917c
DM
3038 if (isALPHA(**s)) {
3039 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3040 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3041
0eb30aeb 3042 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3043 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3044 if (d)
3045 i |= 1 << (d - debopts);
3046 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3047 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3048 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3049 }
3050 }
e6e64d9b 3051 else if (isDIGIT(**s)) {
96e440d2
JH
3052 const char* e;
3053 i = grok_atou(*s, &e);
3054 if (e)
3055 *s = e;
0eb30aeb 3056 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3057 }
ddcf8bc1 3058 else if (givehelp) {
06e869a4 3059 const char *const *p = usage_msgd;
651b8f1a 3060 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3061 }
b4ab917c
DM
3062# ifdef EBCDIC
3063 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3064 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3065 "-Dp not implemented on this platform\n");
3066# endif
3067 return i;
3068}
3069#endif
3070
79072805
LW
3071/* This routine handles any switches that can be given during run */
3072
c7030b81
NC
3073const char *
3074Perl_moreswitches(pTHX_ const char *s)
79072805 3075{
27da23d5 3076 dVAR;
84c133a0 3077 UV rschar;
0544e6df 3078 const char option = *s; /* used to remember option in -m/-M code */
79072805 3079
7918f24d
NC
3080 PERL_ARGS_ASSERT_MORESWITCHES;
3081
79072805
LW
3082 switch (*s) {
3083 case '0':
a863c7d1 3084 {
f2095865 3085 I32 flags = 0;
a3b680e6 3086 STRLEN numlen;
f2095865
JH
3087
3088 SvREFCNT_dec(PL_rs);
3089 if (s[1] == 'x' && s[2]) {
a3b680e6 3090 const char *e = s+=2;
f2095865
JH
3091 U8 *tmps;
3092
a3b680e6
AL
3093 while (*e)
3094 e++;
f2095865
JH
3095 numlen = e - s;
3096 flags = PERL_SCAN_SILENT_ILLDIGIT;
3097 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3098 if (s + numlen < e) {
3099 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3100 numlen = 0;
3101 s--;
3102 }
396482e1 3103 PL_rs = newSVpvs("");
c5661c80 3104 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3105 tmps = (U8*)SvPVX(PL_rs);
3106 uvchr_to_utf8(tmps, rschar);
3107 SvCUR_set(PL_rs, UNISKIP(rschar));
3108 SvUTF8_on(PL_rs);
3109 }
3110 else {
3111 numlen = 4;
3112 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3113 if (rschar & ~((U8)~0))
3114 PL_rs = &PL_sv_undef;
3115 else if (!rschar && numlen >= 2)
396482e1 3116 PL_rs = newSVpvs("");
f2095865
JH
3117 else {
3118 char ch = (char)rschar;
3119 PL_rs = newSVpvn(&ch, 1);
3120 }
3121 }
64ace3f8 3122 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3123 return s + numlen;
a863c7d1 3124 }
46487f74 3125 case 'C':
a05d7ebb 3126 s++;
dd374669 3127 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3128 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3129 PL_utf8cache = -1;
46487f74 3130 return s;
2304df62 3131 case 'F':
5fc691f1 3132 PL_minus_a = TRUE;
3280af22 3133 PL_minus_F = TRUE;
24ffa309 3134 PL_minus_n = TRUE;
ebce5377
RGS
3135 PL_splitstr = ++s;
3136 while (*s && !isSPACE(*s)) ++s;
e49e380e 3137 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3138 return s;
79072805 3139 case 'a':
3280af22 3140 PL_minus_a = TRUE;
24ffa309 3141 PL_minus_n = TRUE;
79072805
LW
3142 s++;
3143 return s;
3144 case 'c':
3280af22 3145 PL_minus_c = TRUE;
79072805
LW
3146 s++;
3147 return s;
3148 case 'd':
f20b2998 3149 forbid_setid('d', FALSE);
4633a7c4 3150 s++;
2cbb2ee1
RGS
3151
3152 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3153 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3154 ++s;
3155 my_setenv("PERL5DB_THREADED", "1");
3156 }
3157
70c94a19
RR
3158 /* The following permits -d:Mod to accepts arguments following an =
3159 in the fashion that -MSome::Mod does. */
3160 if (*s == ':' || *s == '=') {
b19934fb
NC
3161 const char *start;
3162 const char *end;
3163 SV *sv;
3164
3165 if (*++s == '-') {
3166 ++s;
3167 sv = newSVpvs("no Devel::");
3168 } else {
3169 sv = newSVpvs("use Devel::");
3170 }
3171
3172 start = s;
3173 end = s + strlen(s);
f85893a1 3174
b19934fb 3175 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3176 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3177 if (*s != '=')
f85893a1 3178 sv_catpvn(sv, start, end - start);
70c94a19
RR
3179 else {
3180 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3181 /* Don't use NUL as q// delimiter here, this string goes in the
3182 * environment. */
3183 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3184 }
f85893a1 3185 s = end;
184f32ec 3186 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3187 SvREFCNT_dec(sv);
4633a7c4 3188 }
ed094faf 3189 if (!PL_perldb) {
3280af22 3190 PL_perldb = PERLDB_ALL;
a0d0e21e 3191 init_debugger();
ed094faf 3192 }
79072805
LW
3193 return s;
3194 case 'D':
0453d815 3195 {
79072805 3196#ifdef DEBUGGING
f20b2998 3197 forbid_setid('D', FALSE);
b4ab917c 3198 s++;
dd374669 3199 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3200#else /* !DEBUGGING */
0453d815 3201 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3202 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3203 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3204 for (s++; isWORDCHAR(*s); s++) ;
79072805 3205#endif
79072805 3206 return s;
0453d815 3207 }
4633a7c4 3208 case 'h':
b6f82619 3209 usage();
79072805 3210 case 'i':
43c5f42d 3211 Safefree(PL_inplace);
c030f24b
GH
3212#if defined(__CYGWIN__) /* do backup extension automagically */
3213 if (*(s+1) == '\0') {
c86a4f2e 3214 PL_inplace = savepvs(".bak");
c030f24b
GH
3215 return s+1;
3216 }
3217#endif /* __CYGWIN__ */
5ef5d758 3218 {
d4c19fe8 3219 const char * const start = ++s;
5ef5d758
NC
3220 while (*s && !isSPACE(*s))
3221 ++s;
3222
3223 PL_inplace = savepvn(start, s - start);
3224 }
7b8d334a 3225 if (*s) {
5ef5d758 3226 ++s;
7b8d334a 3227 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3228 s++;
7b8d334a 3229 }
fb73857a 3230 return s;
4e49a025 3231 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3232 forbid_setid('I', FALSE);
fb73857a
PP
3233 ++s;
3234 while (*s && isSPACE(*s))
3235 ++s;
3236 if (*s) {
c7030b81 3237 const char *e, *p;
0df16ed7
GS
3238 p = s;
3239 /* ignore trailing spaces (possibly followed by other switches) */
3240 do {
3241 for (e = p; *e && !isSPACE(*e); e++) ;
3242 p = e;
3243 while (isSPACE(*p))
3244 p++;
3245 } while (*p && *p != '-');
55b4bc1c 3246 incpush(s, e-s,
e28f3139 3247 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3248 s = p;
3249 if (*s == '-')
3250 s++;
79072805
LW
3251 }
3252 else
a67e862a 3253 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3254 return s;
79072805 3255 case 'l':
3280af22 3256 PL_minus_l = TRUE;
79072805 3257 s++;
7889fe52
NIS
3258 if (PL_ors_sv) {
3259 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3260 PL_ors_sv = NULL;
7889fe52 3261 }
79072805 3262 if (isDIGIT(*s)) {
53305cf1 3263 I32 flags = 0;
a3b680e6 3264 STRLEN numlen;
396482e1 3265 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3266 numlen = 3 + (*s == '0');
3267 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3268 s += numlen;
3269 }
3270 else {
8bfdd7d9 3271 if (RsPARA(PL_rs)) {
396482e1 3272 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3273 }
3274 else {
8bfdd7d9 3275 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3276 }
79072805
LW
3277 }
3278 return s;
1a30305b 3279 case 'M':
f20b2998 3280 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3281 /* FALLTHROUGH */
1a30305b 3282 case 'm':
f20b2998 3283 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3284 if (*++s) {
c7030b81 3285 const char *start;
b64cb68c 3286 const char *end;
11343788 3287 SV *sv;
e1ec3a88 3288 const char *use = "use ";
0544e6df 3289 bool colon = FALSE;
a5f75d66 3290 /* -M-foo == 'no foo' */
d0043bd1
NC
3291 /* Leading space on " no " is deliberate, to make both
3292 possibilities the same length. */
3293 if (*s == '-') { use = " no "; ++s; }
3294 sv = newSVpvn(use,4);
a5f75d66 3295 start = s;
1a30305b 3296 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3297 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3298 if( *s++ == ':' ) {
3299 if( *s == ':' )
3300 s++;
3301 else
3302 colon = TRUE;
3303 }
3304 }
3305 if (s == start)
3306 Perl_croak(aTHX_ "Module name required with -%c option",
3307 option);
3308 if (colon)
3309 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3310 "contains single ':'",
63da6837 3311 (int)(s - start), start, option);
b64cb68c 3312 end = s + strlen(s);
c07a80fd 3313 if (*s != '=') {
b64cb68c 3314 sv_catpvn(sv, start, end - start);
0544e6df 3315 if (option == 'm') {
c07a80fd 3316 if (*s != '\0')
cea2e8a9 3317 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3318 sv_catpvs( sv, " ()");
c07a80fd
PP
3319 }
3320 } else {
11343788 3321 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3322 /* Use NUL as q''-delimiter. */
3323 sv_catpvs(sv, " split(/,/,q\0");
3324 ++s;
3325 sv_catpvn(sv, s, end - s);
396482e1 3326 sv_catpvs(sv, "\0)");
c07a80fd 3327 }
b64cb68c 3328 s = end;
29a861e7 3329 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3330 }
3331 else
0544e6df 3332 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3333 return s;
79072805 3334 case 'n':
3280af22 3335 PL_minus_n = TRUE;
79072805
LW
3336 s++;
3337 return s;
3338 case 'p':
3280af22 3339 PL_minus_p = TRUE;
79072805
LW
3340 s++;
3341 return s;
3342 case 's':
f20b2998 3343 forbid_setid('s', FALSE);
3280af22 3344 PL_doswitches = TRUE;
79072805
LW
3345 s++;
3346 return s;
6537fe72 3347 case 't':
27a6968b 3348 case 'T':
dc6d7f5c 3349#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3350 /* silently ignore */
dc6d7f5c 3351#elif defined(NO_TAINT_SUPPORT)
3231f579 3352 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3353 "Cowardly refusing to run with -t or -T flags");
3354#else
3355 if (!TAINTING_get)
27a6968b 3356 TOO_LATE_FOR(*s);
284167a5 3357#endif
6537fe72 3358 s++;
463ee0b2 3359 return s;
79072805 3360 case 'u':
3280af22 3361 PL_do_undump = TRUE;
79072805
LW
3362 s++;
3363 return s;
3364 case 'U':
3280af22 3365 PL_unsafe = TRUE;
79072805
LW
3366 s++;
3367 return s;
3368 case 'v':
c4bc78d9
NC
3369 minus_v();
3370 case 'w':
3371 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3372 PL_dowarn |= G_WARN_ON;
3373 }
3374 s++;
3375 return s;
3376 case 'W':
3377 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3378 if (!specialWARN(PL_compiling.cop_warnings))
3379 PerlMemShared_free(PL_compiling.cop_warnings);
3380 PL_compiling.cop_warnings = pWARN_ALL ;
3381 s++;
3382 return s;
3383 case 'X':
3384 PL_dowarn = G_WARN_ALL_OFF;
3385 if (!specialWARN(PL_compiling.cop_warnings))
3386 PerlMemShared_free(PL_compiling.cop_warnings);
3387 PL_compiling.cop_warnings = pWARN_NONE ;
3388 s++;
3389 return s;
3390 case '*':
3391 case ' ':
3392 while( *s == ' ' )
3393 ++s;
3394 if (s[0] == '-') /* Additional switches on #! line. */
3395 return s+1;
3396 break;
3397 case '-':
3398 case 0:
3399#if defined(WIN32) || !defined(PERL_STRICT_CR)
3400 case '\r':
3401#endif
3402 case '\n':
3403 case '\t':
3404 break;
3405#ifdef ALTERNATE_SHEBANG
3406 case 'S': /* OS/2 needs -S on "extproc" line. */
3407 break;
3408#endif
4bb78d63
CB
3409 case 'e': case 'f': case 'x': case 'E':
3410#ifndef ALTERNATE_SHEBANG
3411 case 'S':
3412#endif
3413 case 'V':
c4bc78d9 3414 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3415 default:
3416 Perl_croak(aTHX_
3417 "Unrecognized switch: -%.1s (-h will show valid options)",s
3418 );
c4bc78d9
NC
3419 }
3420 return NULL;
3421}
3422
3423
3424STATIC void
3425S_minus_v(pTHX)
3426{
fc3381af 3427 PerlIO * PIO_stdout;
46807d8e 3428 {
709aee94
DD
3429 const char * const level_str = "v" PERL_VERSION_STRING;
3430 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3431#ifdef PERL_PATCHNUM
709aee94 3432 SV* level;
23d483e2 3433# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3434 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3435# else
709aee94 3436 static const char num [] = PERL_PATCHNUM;
23d483e2 3437# endif
fc3381af 3438 {
709aee94
DD
3439 const STRLEN num_len = sizeof(num)-1;
3440 /* A very advanced compiler would fold away the strnEQ
3441 and this whole conditional, but most (all?) won't do it.
3442 SV level could also be replaced by with preprocessor
3443 catenation.
3444 */
3445 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3446 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3447 of the interp so it might contain format characters
3448 */
3449 level = newSVpvn(num, num_len);
fc3381af 3450 } else {
709aee94 3451 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3452 }
46807d8e 3453 }
709aee94
DD
3454#else
3455 SV* level = newSVpvn(level_str, level_len);
3456#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3457 PIO_stdout = PerlIO_stdout();
3458 PerlIO_printf(PIO_stdout,
ded326e4
DG
3459 "\nThis is perl " STRINGIFY(PERL_REVISION)
3460 ", version " STRINGIFY(PERL_VERSION)
3461 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3462 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3463 );
709aee94 3464 SvREFCNT_dec_NN(level);
46807d8e 3465 }
fb73857a
PP
3466#if defined(LOCAL_PATCH_COUNT)
3467 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3468 PerlIO_printf(PIO_stdout,
b0e47665
GS
3469 "\n(with %d registered patch%s, "
3470 "see perl -V for more detail)",
bb7a0f54 3471 LOCAL_PATCH_COUNT,
b0e47665 3472 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3473#endif
1a30305b 3474
fc3381af 3475 PerlIO_printf(PIO_stdout,
fb435042 3476 "\n\nCopyright 1987-2014, Larry Wall\n");
79072805 3477#ifdef MSDOS
fc3381af 3478 PerlIO_printf(PIO_stdout,
b0e47665 3479 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3480#endif
3481#ifdef DJGPP
fc3381af 3482 PerlIO_printf(PIO_stdout,
b0e47665
GS
3483 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3484 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3485#endif
79072805 3486#ifdef OS2
fc3381af 3487 PerlIO_printf(PIO_stdout,
b0e47665