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[perl #122445] use magic on $DB::single etc to avoid overload issues
[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);
1e8125c6 328 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 329
27da23d5
JH
330#ifdef HAS_MMAP
331 if (!PL_mmap_page_size) {
332#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
333 {
334 SETERRNO(0, SS_NORMAL);
335# ifdef _SC_PAGESIZE
336 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
337# else
338 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
339# endif
340 if ((long) PL_mmap_page_size < 0) {
341 if (errno) {
44f8325f 342 SV * const error = ERRSV;
d4c19fe8 343 SvUPGRADE(error, SVt_PV);
0510663f 344 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
345 }
346 else
347 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
348 }
349 }
350#else
351# ifdef HAS_GETPAGESIZE
352 PL_mmap_page_size = getpagesize();
353# else
354# if defined(I_SYS_PARAM) && defined(PAGESIZE)
355 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
356# endif
357# endif
358#endif
359 if (PL_mmap_page_size <= 0)
360 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
361 (IV) PL_mmap_page_size);
362 }
363#endif /* HAS_MMAP */
364
365#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
366 PL_timesbase.tms_utime = 0;
367 PL_timesbase.tms_stime = 0;
368 PL_timesbase.tms_cutime = 0;
369 PL_timesbase.tms_cstime = 0;
370#endif
371
7d113631
NC
372 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
373
a3e6e81e 374 PL_registered_mros = newHV();
9e169432
NC
375 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
376 HvMAX(PL_registered_mros) = 0;
a3e6e81e 377
7b8dd5f4
KW
378 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
379 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
380 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
381 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
382 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
383 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
384 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
385 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
386 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
387 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
388 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
389 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
390 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
391 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
392 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
393 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
394 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC
441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC
449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
462 abort();
463 }
bf357333
NC
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
466 abort();
467 }
468
808ad2d0
NC
469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC
480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
491
808ad2d0
NC
492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC
511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS
516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG
539 assert(PL_scopestack_ix == 1);
540
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH
549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
553 i = grok_atou(s, NULL);
554 }
36e77d41
DD
555#ifdef DEBUGGING
556 if (destruct_level < i) destruct_level = i;
557#endif
558#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
36e77d41 561#endif
5f05dabc 562 }
4633a7c4
LW
563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
9ebf26ad 572 if (PL_endav && !PL_minus_c) {
ca7b837b 573 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 574 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 575 }
f3faeb53 576 JMPENV_POP;
26f423df 577 }
f3faeb53 578 LEAVE;
a0d0e21e 579 FREETMPS;
3d22c4f0 580 assert(PL_scopestack_ix == 0);
a0d0e21e 581
e00b64d4 582 /* Need to flush since END blocks can produce output */
f13a2bc0 583 my_fflush_all();
e00b64d4 584
75d476e2
SM
585#ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
591 }
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
596#endif
597
598
16c91539 599 if (PL_threadhook(aTHX)) {
62375a60 600 /* Threads hook has vetoed further cleanup */
c301d606 601 PL_veto_cleanup = TRUE;
37038d91 602 return STATUS_EXIT;
62375a60
NIS
603 }
604
2aa47728
NC
605#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
611 fail gracefully */
612 int fd[2];
613
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
616 abort();
617 }
618
619 child = fork();
620 if(child == -1) {
621 perror("Debug leaking scalars fork failed");
622 abort();
623 }
624 if (!child) {
625 /* We are the child */
3125a5a4
NC
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
628 int f;
808ad2d0
NC
629 const char *where;
630 /* Our success message is an integer 0, and a char 0 */
b61433a9 631 static const char success[sizeof(int) + 1] = {0};
3125a5a4 632
2aa47728 633 close(fd[0]);
2aa47728 634
3125a5a4
NC
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
bf357333
NC
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
646
647 f = sysconf(_SC_OPEN_MAX);
648 if(f < 0) {
808ad2d0
NC
649 where = "sysconf failed";
650 goto abort;
3125a5a4
NC
651 }
652 while (f--) {
653 if (f == sock)
654 continue;
3125a5a4
NC
655 close(f);
656 }
657
2aa47728
NC
658 while (1) {
659 SV *target;
bf357333
NC
660 union control_un control;
661 struct msghdr msg;
662 struct iovec vec[1];
663 struct cmsghdr *cmptr;
664 ssize_t got;
665 int got_fd;
666
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
670 msg.msg_name = NULL;
671 msg.msg_namelen = 0;
672 msg.msg_iov = vec;
c3caa5c3 673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
674
675 vec[0].iov_base = (void*)&target;
676 vec[0].iov_len = sizeof(target);
677
678 got = recvmsg(sock, &msg, 0);
2aa47728
NC
679
680 if(got == 0)
681 break;
682 if(got < 0) {
808ad2d0
NC
683 where = "recv failed";
684 goto abort;
2aa47728
NC
685 }
686 if(got < sizeof(target)) {
808ad2d0
NC
687 where = "short recv";
688 goto abort;
2aa47728 689 }
bf357333 690
808ad2d0
NC
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
692 where = "no cmsg";
693 goto abort;
694 }
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
697 goto abort;
698 }
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
701 goto abort;
702 }
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
705 goto abort;
706 }
bf357333
NC
707
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
711 */
808ad2d0
NC
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
714 where = "dup2";
715 goto abort;
716 }
717 }
2aa47728 718 sv_dump(target);
bf357333 719
2aa47728
NC
720 PerlIO_flush(Perl_debug_log);
721
808ad2d0 722 got = write(sock, &success, sizeof(success));
2aa47728
NC
723
724 if(got < 0) {
808ad2d0
NC
725 where = "write failed";
726 goto abort;
2aa47728 727 }
808ad2d0
NC
728 if(got < sizeof(success)) {
729 where = "short write";
730 goto abort;
2aa47728
NC
731 }
732 }
733 _exit(0);
808ad2d0
NC
734 abort:
735 {
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
740 {&length, 1},
741 {(void*)where, length}
742 };
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
748 reading the data. */
749 sleep(2);
750 _exit((got == -1) ? errno : 0);
751 }
bf357333 752 /* End of child. */
2aa47728 753 }
41e4abd8 754 PL_dumper_fd = fd[0];
2aa47728
NC
755 close(fd[1]);
756 }
757#endif
758
ff0cee69
PP
759 /* We must account for everything. */
760
761 /* Destroy the main CV and syntax tree */
37e77c23
FC
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
17fbfdf6 766 PL_curcop = &PL_compiling;
3280af22 767 if (PL_main_root) {
4e380990
DM
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 772 }
3280af22 773 op_free(PL_main_root);
5f66b61c 774 PL_main_root = NULL;
a0d0e21e 775 }
5f66b61c 776 PL_main_start = NULL;
aac9d523
DM
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
3280af22 781 SvREFCNT_dec(PL_main_cv);
601f1833 782 PL_main_cv = NULL;
ca7b837b 783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 784
13621cfb
NIS
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
787 be cleaned up now.
788 */
789
790 PerlIO_destruct(aTHX);
791
ddf23d4a
SM
792 /*
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
796 */
797 sv_clean_objs();
8990e307 798
5cd24f17 799 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 800 SvREFCNT_dec(PL_warnhook);
a0714e2c 801 PL_warnhook = NULL;
3280af22 802 SvREFCNT_dec(PL_diehook);
a0714e2c 803 PL_diehook = NULL;
5cd24f17 804
4b556e6c 805 /* call exit list functions */
3280af22 806 while (PL_exitlistlen-- > 0)
acfe0abc 807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 808
3280af22 809 Safefree(PL_exitlist);
4b556e6c 810
1c4916e5
CB
811 PL_exitlist = NULL;
812 PL_exitlistlen = 0;
813
a3e6e81e
NC
814 SvREFCNT_dec(PL_registered_mros);
815
551a8b83 816 /* jettison our possibly duplicated environment */
4b647fb0
DM
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
819 */
2f42fcb0 820#ifndef PERL_MICRO
4b647fb0 821#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 822 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
823#ifdef USE_ITHREADS
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
826#endif
827 )
828 {
551a8b83
JH
829 I32 i;
830
831 for (i = 0; environ[i]; i++)
4b420006 832 safesysfree(environ[i]);
0631ea03 833
4b420006
JH
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
551a8b83
JH
836
837 environ = PL_origenviron;
838 }
839#endif
2f42fcb0 840#endif /* !PERL_MICRO */
551a8b83 841
30985c42
JH
842 if (destruct_level == 0) {
843
844 DEBUG_P(debprofdump());
845
846#if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
849#endif
850
851 CopFILE_free(&PL_compiling);
30985c42
JH
852
853 /* The exit() function will do everything that needs doing. */
854 return STATUS_EXIT;
855 }
856
9fa9f06b
KW
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
858
5f8cb046
DM
859#ifdef USE_ITHREADS
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
864 */
0547a729
DM
865 {
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
868
869 for (; i; i--) {
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
872 }
873 }
5f8cb046
DM
874#endif
875
0547a729 876
ad64d0ec 877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
878 PL_stashcache = NULL;
879
5f05dabc
PP
880 /* loosen bonds of global variables */
881
2f9285f8
DM
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
8ebc5c01
PP
886 }
887
84386e14
RGS
888 if (PL_minus_F) {
889 Safefree(PL_splitstr);
890 PL_splitstr = NULL;
891 }
892
8ebc5c01 893 /* switches */
3280af22
NIS
894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
1a904fc8 901#ifdef PERL_SAWAMPERSAND
d3b97530 902 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 903#endif
3280af22
NIS
904 PL_unsafe = FALSE;
905
906 Safefree(PL_inplace);
bd61b366 907 PL_inplace = NULL;
a7cb1f99 908 SvREFCNT_dec(PL_patchlevel);
1e8125c6 909 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
910
911 if (PL_e_script) {
912 SvREFCNT_dec(PL_e_script);
a0714e2c 913 PL_e_script = NULL;
8ebc5c01
PP
914 }
915
bf9cdc68
RG
916 PL_perldb = 0;
917
8ebc5c01
PP
918 /* magical thingies */
919
e23d9e2f
CS
920 SvREFCNT_dec(PL_ofsgv); /* *, */
921 PL_ofsgv = NULL;
5f05dabc 922
7889fe52 923 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 924 PL_ors_sv = NULL;
8ebc5c01 925
3280af22 926 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 927 PL_rs = NULL;
dc92893f 928
d33b2eba 929 Safefree(PL_osname); /* $^O */
bd61b366 930 PL_osname = NULL;
5f05dabc 931
3280af22 932 SvREFCNT_dec(PL_statname);
a0714e2c
SS
933 PL_statname = NULL;
934 PL_statgv = NULL;
5f05dabc 935
8ebc5c01
PP
936 /* defgv, aka *_ should be taken care of elsewhere */
937
7d5ea4e7
GS
938 /* float buffer */
939 Safefree(PL_efloatbuf);
bd61b366 940 PL_efloatbuf = NULL;
7d5ea4e7
GS
941 PL_efloatsize = 0;
942
8ebc5c01 943 /* startup and shutdown function lists */
3280af22 944 SvREFCNT_dec(PL_beginav);
5a837c8f 945 SvREFCNT_dec(PL_beginav_save);
3280af22 946 SvREFCNT_dec(PL_endav);
7d30b5c4 947 SvREFCNT_dec(PL_checkav);
ece599bd 948 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
949 SvREFCNT_dec(PL_unitcheckav);
950 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 951 SvREFCNT_dec(PL_initav);
7d49f689
NC
952 PL_beginav = NULL;
953 PL_beginav_save = NULL;
954 PL_endav = NULL;
955 PL_checkav = NULL;
956 PL_checkav_save = NULL;
3c10abe3
AG
957 PL_unitcheckav = NULL;
958 PL_unitcheckav_save = NULL;
7d49f689 959 PL_initav = NULL;
5618dfe8 960
8ebc5c01 961 /* shortcuts just get cleared */
a0714e2c
SS
962 PL_hintgv = NULL;
963 PL_errgv = NULL;
a0714e2c
SS
964 PL_argvoutgv = NULL;
965 PL_stdingv = NULL;
966 PL_stderrgv = NULL;
967 PL_last_in_gv = NULL;
a0714e2c
SS
968 PL_DBsingle = NULL;
969 PL_DBtrace = NULL;
970 PL_DBsignal = NULL;
a6d69523
TC
971 PL_DBsingle_iv = 0;
972 PL_DBtrace_iv = 0;
973 PL_DBsignal_iv = 0;
601f1833 974 PL_DBcv = NULL;
7d49f689 975 PL_dbargs = NULL;
5c284bb0 976 PL_debstash = NULL;
8ebc5c01 977
cf93a474 978 SvREFCNT_dec(PL_envgv);
f03015cd 979 SvREFCNT_dec(PL_incgv);
722fa0e9 980 SvREFCNT_dec(PL_argvgv);
475b1e90 981 SvREFCNT_dec(PL_replgv);
8cece913
FC
982 SvREFCNT_dec(PL_DBgv);
983 SvREFCNT_dec(PL_DBline);
984 SvREFCNT_dec(PL_DBsub);
cf93a474 985 PL_envgv = NULL;
f03015cd 986 PL_incgv = NULL;
722fa0e9 987 PL_argvgv = NULL;
475b1e90 988 PL_replgv = NULL;
8cece913
FC
989 PL_DBgv = NULL;
990 PL_DBline = NULL;
991 PL_DBsub = NULL;
992
7a1c5554 993 SvREFCNT_dec(PL_argvout_stack);
7d49f689 994 PL_argvout_stack = NULL;
8ebc5c01 995
5c831c24 996 SvREFCNT_dec(PL_modglobal);
5c284bb0 997 PL_modglobal = NULL;
5c831c24 998 SvREFCNT_dec(PL_preambleav);
7d49f689 999 PL_preambleav = NULL;
5c831c24 1000 SvREFCNT_dec(PL_subname);
a0714e2c 1001 PL_subname = NULL;
ca0c25f6 1002#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1003 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1004 PL_pidstatus = NULL;
ca0c25f6 1005#endif
5c831c24 1006 SvREFCNT_dec(PL_toptarget);
a0714e2c 1007 PL_toptarget = NULL;
5c831c24 1008 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1009 PL_bodytarget = NULL;
1010 PL_formtarget = NULL;
5c831c24 1011
d33b2eba 1012 /* free locale stuff */
b9582b6a 1013#ifdef USE_LOCALE_COLLATE
d33b2eba 1014 Safefree(PL_collation_name);
bd61b366 1015 PL_collation_name = NULL;
b9582b6a 1016#endif
d33b2eba 1017
b9582b6a 1018#ifdef USE_LOCALE_NUMERIC
d33b2eba 1019 Safefree(PL_numeric_name);
bd61b366 1020 PL_numeric_name = NULL;
a453c169 1021 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1022 PL_numeric_radix_sv = NULL;
b9582b6a 1023#endif
d33b2eba 1024
9c0b6888
KW
1025 /* clear character classes */
1026 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1027 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1028 PL_utf8_swash_ptrs[i] = NULL;
1029 }
5c831c24
GS
1030 SvREFCNT_dec(PL_utf8_mark);
1031 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1032 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1033 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1034 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1035 SvREFCNT_dec(PL_utf8_idstart);
1036 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1037 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1038 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1039 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1040 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1041 SvREFCNT_dec(PL_UpperLatin1);
1042 SvREFCNT_dec(PL_Latin1);
1043 SvREFCNT_dec(PL_NonL1NonFinalFold);
1044 SvREFCNT_dec(PL_HasMultiCharFold);
a0714e2c
SS
1045 PL_utf8_mark = NULL;
1046 PL_utf8_toupper = NULL;
1047 PL_utf8_totitle = NULL;
1048 PL_utf8_tolower = NULL;
1049 PL_utf8_tofold = NULL;
1050 PL_utf8_idstart = NULL;
1051 PL_utf8_idcont = NULL;
2726813d 1052 PL_utf8_foldclosures = NULL;
9fa9f06b 1053 PL_AboveLatin1 = NULL;
e0a1ff7a 1054 PL_InBitmap = NULL;
9fa9f06b
KW
1055 PL_HasMultiCharFold = NULL;
1056 PL_Latin1 = NULL;
1057 PL_NonL1NonFinalFold = NULL;
1058 PL_UpperLatin1 = NULL;
86f72d56 1059 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1060 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1061 PL_XPosix_ptrs[i] = NULL;
86f72d56 1062 }
5c831c24 1063
971a9dd3 1064 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1065 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1066 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1067 cophh_free(CopHINTHASH_get(&PL_compiling));
1068 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1069 CopFILE_free(&PL_compiling);
5c831c24 1070
a0d0e21e 1071 /* Prepare to destruct main symbol table. */
5f05dabc 1072
3280af22 1073 hv = PL_defstash;
ca556bcd
DM
1074 /* break ref loop *:: <=> %:: */
1075 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1076 PL_defstash = 0;
a0d0e21e 1077 SvREFCNT_dec(hv);
5c831c24 1078 SvREFCNT_dec(PL_curstname);
a0714e2c 1079 PL_curstname = NULL;
a0d0e21e 1080
5a844595
GS
1081 /* clear queued errors */
1082 SvREFCNT_dec(PL_errors);
a0714e2c 1083 PL_errors = NULL;
5a844595 1084
dd69841b
BB
1085 SvREFCNT_dec(PL_isarev);
1086
a0d0e21e 1087 FREETMPS;
9b387841 1088 if (destruct_level >= 2) {
3280af22 1089 if (PL_scopestack_ix != 0)
9b387841
NC
1090 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1091 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1092 (long)PL_scopestack_ix);
3280af22 1093 if (PL_savestack_ix != 0)
9b387841
NC
1094 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1095 "Unbalanced saves: %ld more saves than restores\n",
1096 (long)PL_savestack_ix);
3280af22 1097 if (PL_tmps_floor != -1)
9b387841
NC
1098 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1099 (long)PL_tmps_floor + 1);
a0d0e21e 1100 if (cxstack_ix != -1)
9b387841
NC
1101 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1102 (long)cxstack_ix + 1);
a0d0e21e 1103 }
8990e307 1104
0547a729
DM
1105#ifdef USE_ITHREADS
1106 SvREFCNT_dec(PL_regex_padav);
1107 PL_regex_padav = NULL;
1108 PL_regex_pad = NULL;
1109#endif
1110
776df701 1111#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1112 /* the entries in this list are allocated via SV PVX's, so get freed
1113 * in sv_clean_all */
1114 Safefree(PL_my_cxt_list);
776df701 1115#endif
57bb2458 1116
8990e307 1117 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1118
1119 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1120 while (sv_clean_all() > 2)
5226ed68
JH
1121 ;
1122
23083432
FC
1123#ifdef USE_ITHREADS
1124 Safefree(PL_stashpad); /* must come after sv_clean_all */
1125#endif
1126
d4777f27
GS
1127 AvREAL_off(PL_fdpid); /* no surviving entries */
1128 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1129 PL_fdpid = NULL;
d33b2eba 1130
6c644e78
GS
1131#ifdef HAVE_INTERP_INTERN
1132 sys_intern_clear();
1133#endif
1134
a38ab475
RZ
1135 /* constant strings */
1136 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1137 SvREFCNT_dec(PL_sv_consts[i]);
1138 PL_sv_consts[i] = NULL;
1139 }
1140
6e72f9df
PP
1141 /* Destruct the global string table. */
1142 {
1143 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1144 * so that sv_free() won't fail on them.
80459961
NC
1145 * Now that the global string table is using a single hunk of memory
1146 * for both HE and HEK, we either need to explicitly unshare it the
1147 * correct way, or actually free things here.
6e72f9df 1148 */
80459961
NC
1149 I32 riter = 0;
1150 const I32 max = HvMAX(PL_strtab);
c4420975 1151 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1152 HE *hent = array[0];
1153
6e72f9df 1154 for (;;) {
0453d815 1155 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1156 HE * const next = HeNEXT(hent);
9014280d 1157 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1158 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1159 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1160 Safefree(hent);
1161 hent = next;
6e72f9df
PP
1162 }
1163 if (!hent) {
1164 if (++riter > max)
1165 break;
1166 hent = array[riter];
1167 }
1168 }
80459961
NC
1169
1170 Safefree(array);
1171 HvARRAY(PL_strtab) = 0;
1172 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1173 }
3280af22 1174 SvREFCNT_dec(PL_strtab);
6e72f9df 1175
e652bb2f 1176#ifdef USE_ITHREADS
c21d1a0f 1177 /* free the pointer tables used for cloning */
a0739874 1178 ptr_table_free(PL_ptr_table);
bf9cdc68 1179 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1180#endif
a0739874 1181
d33b2eba
GS
1182 /* free special SVs */
1183
1184 SvREFCNT(&PL_sv_yes) = 0;
1185 sv_clear(&PL_sv_yes);
1186 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1187 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1188
1189 SvREFCNT(&PL_sv_no) = 0;
1190 sv_clear(&PL_sv_no);
1191 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1192 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1193
9f375a43
DM
1194 {
1195 int i;
1196 for (i=0; i<=2; i++) {
1197 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1198 sv_clear(PERL_DEBUG_PAD(i));
1199 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1200 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1201 }
1202 }
1203
0453d815 1204 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1205 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1206
eba0f806
DM
1207#ifdef DEBUG_LEAKING_SCALARS
1208 if (PL_sv_count != 0) {
1209 SV* sva;
1210 SV* sv;
eb578fdb 1211 SV* svend;
eba0f806 1212
ad64d0ec 1213 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1214 svend = &sva[SvREFCNT(sva)];
1215 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1216 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1217 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1218 " flags=0x%"UVxf
fd0854ff 1219 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1220 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1221 "serial %"UVuf"\n",
574b8821
NC
1222 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1223 pTHX__VALUE,
fd0854ff
DM
1224 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1225 sv->sv_debug_line,
1226 sv->sv_debug_inpad ? "for" : "by",
1227 sv->sv_debug_optype ?
1228 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1229 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1230 sv->sv_debug_serial
fd0854ff 1231 );
2aa47728 1232#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1233 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1234#endif
eba0f806
DM
1235 }
1236 }
1237 }
1238 }
2aa47728
NC
1239#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1240 {
1241 int status;
1242 fd_set rset;
1243 /* Wait for up to 4 seconds for child to terminate.
1244 This seems to be the least effort way of timing out on reaping
1245 its exit status. */
1246 struct timeval waitfor = {4, 0};
41e4abd8 1247 int sock = PL_dumper_fd;
2aa47728
NC
1248
1249 shutdown(sock, 1);
1250 FD_ZERO(&rset);
1251 FD_SET(sock, &rset);
1252 select(sock + 1, &rset, NULL, NULL, &waitfor);
1253 waitpid(child, &status, WNOHANG);
1254 close(sock);
1255 }
1256#endif
eba0f806 1257#endif
77abb4c6
NC
1258#ifdef DEBUG_LEAKING_SCALARS_ABORT
1259 if (PL_sv_count)
1260 abort();
1261#endif
bf9cdc68 1262 PL_sv_count = 0;
eba0f806 1263
56a2bab7 1264#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1265 /* No more IO - including error messages ! */
1266 PerlIO_cleanup(aTHX);
1267#endif
1268
9f4bd222 1269 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1270 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1271 for no arg - and will try and SvREFCNT_dec it.
1272 */
1273 SvREFCNT(&PL_sv_undef) = 0;
1274 SvREADONLY_off(&PL_sv_undef);
1275
3280af22 1276 Safefree(PL_origfilename);
bd61b366 1277 PL_origfilename = NULL;
43c5f42d 1278 Safefree(PL_reg_curpm);
dd28f7bb 1279 free_tied_hv_pool();
3280af22 1280 Safefree(PL_op_mask);
cf36064f 1281 Safefree(PL_psig_name);
bf9cdc68 1282 PL_psig_name = (SV**)NULL;
d525a7b2 1283 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1284 {
1285 /* We need to NULL PL_psig_pend first, so that
1286 signal handlers know not to use it */
1287 int *psig_save = PL_psig_pend;
1288 PL_psig_pend = (int*)NULL;
1289 Safefree(psig_save);
1290 }
6e72f9df 1291 nuke_stacks();
284167a5
SM
1292 TAINTING_set(FALSE);
1293 TAINT_WARN_set(FALSE);
3280af22 1294 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1295 PL_debug = 0;
ac27b0f5 1296
a0d0e21e 1297 DEBUG_P(debprofdump());
d33b2eba 1298
e5dd39fc 1299#ifdef USE_REENTRANT_API
10bc17b6 1300 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1301#endif
1302
612f20c3
GS
1303 sv_free_arenas();
1304
5d9a96ca
DM
1305 while (PL_regmatch_slab) {
1306 regmatch_slab *s = PL_regmatch_slab;
1307 PL_regmatch_slab = PL_regmatch_slab->next;
1308 Safefree(s);
1309 }
1310
fc36a67e
PP
1311 /* As the absolutely last thing, free the non-arena SV for mess() */
1312
3280af22 1313 if (PL_mess_sv) {
f350b448
NC
1314 /* we know that type == SVt_PVMG */
1315
9c63abab 1316 /* it could have accumulated taint magic */
f350b448
NC
1317 MAGIC* mg;
1318 MAGIC* moremagic;
1319 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1320 moremagic = mg->mg_moremagic;
1321 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1322 && mg->mg_len >= 0)
1323 Safefree(mg->mg_ptr);
1324 Safefree(mg);
9c63abab 1325 }
f350b448 1326
fc36a67e 1327 /* we know that type >= SVt_PV */
8bd4d4c5 1328 SvPV_free(PL_mess_sv);
3280af22
NIS
1329 Safefree(SvANY(PL_mess_sv));
1330 Safefree(PL_mess_sv);
a0714e2c 1331 PL_mess_sv = NULL;
fc36a67e 1332 }
37038d91 1333 return STATUS_EXIT;
79072805
LW
1334}
1335
954c1994
GS
1336/*
1337=for apidoc perl_free
1338
1339Releases a Perl interpreter. See L<perlembed>.
1340
1341=cut
1342*/
1343
79072805 1344void
0cb96387 1345perl_free(pTHXx)
79072805 1346{
5174512c
NC
1347 dVAR;
1348
7918f24d
NC
1349 PERL_ARGS_ASSERT_PERL_FREE;
1350
c301d606
DM
1351 if (PL_veto_cleanup)
1352 return;
1353
7cb608b5 1354#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1355 {
1356 /*
1357 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1358 * value as we're probably hunting memory leaks then
1359 */
36e77d41 1360 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1361 const U32 old_debug = PL_debug;
55ef9aae
MHM
1362 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1363 thread at thread exit. */
4fd0a9b8
NC
1364 if (DEBUG_m_TEST) {
1365 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1366 "free this thread's memory\n");
1367 PL_debug &= ~ DEBUG_m_FLAG;
1368 }
55ef9aae 1369 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
a78adc84 1370 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1371 PL_debug = old_debug;
55ef9aae
MHM
1372 }
1373 }
7cb608b5
NC
1374#endif
1375
acfe0abc 1376#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1377# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1378 {
acfe0abc 1379# ifdef NETWARE
7af12a34 1380 void *host = nw_internal_host;
7af12a34 1381 PerlMem_free(aTHXx);
7af12a34 1382 nw_delete_internal_host(host);
acfe0abc 1383# else
bdb50480
NC
1384 void *host = w32_internal_host;
1385 PerlMem_free(aTHXx);
7af12a34 1386 win32_delete_internal_host(host);
acfe0abc 1387# endif
7af12a34 1388 }
1c0ca838
GS
1389# else
1390 PerlMem_free(aTHXx);
1391# endif
acfe0abc
GS
1392#else
1393 PerlMem_free(aTHXx);
76e3520e 1394#endif
79072805
LW
1395}
1396
b7f7fff6 1397#if defined(USE_ITHREADS)
aebd1ac7
GA
1398/* provide destructors to clean up the thread key when libperl is unloaded */
1399#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1400
826955bd 1401#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1402#pragma fini "perl_fini"
666ad1ec
GA
1403#elif defined(__sun) && !defined(__GNUC__)
1404#pragma fini (perl_fini)
aebd1ac7
GA
1405#endif
1406
0dbb1585
AL
1407static void
1408#if defined(__GNUC__)
1409__attribute__((destructor))
aebd1ac7 1410#endif
de009b76 1411perl_fini(void)
aebd1ac7 1412{
27da23d5 1413 dVAR;
5c64bffd
NC
1414 if (
1415#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1416 my_vars &&
1417#endif
1418 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1419 FREE_THREAD_KEY;
1420}
1421
1422#endif /* WIN32 */
1423#endif /* THREADS */
1424
4b556e6c 1425void
864dbfa3 1426Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1427{
3280af22
NIS
1428 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1429 PL_exitlist[PL_exitlistlen].fn = fn;
1430 PL_exitlist[PL_exitlistlen].ptr = ptr;
1431 ++PL_exitlistlen;
4b556e6c
JD
1432}
1433
954c1994
GS
1434/*
1435=for apidoc perl_parse
1436
1437Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1438
1439=cut
1440*/
1441
03d9f026
FC
1442#define SET_CURSTASH(newstash) \
1443 if (PL_curstash != newstash) { \
1444 SvREFCNT_dec(PL_curstash); \
1445 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1446 }
1447
79072805 1448int
0cb96387 1449perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1450{
27da23d5 1451 dVAR;
6224f72b 1452 I32 oldscope;
6224f72b 1453 int ret;
db36c5a1 1454 dJMPENV;
8d063cd8 1455
7918f24d
NC
1456 PERL_ARGS_ASSERT_PERL_PARSE;
1457#ifndef MULTIPLICITY
ed6c66dd 1458 PERL_UNUSED_ARG(my_perl);
7918f24d 1459#endif
7dc86639 1460#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1461 {
7dc86639
YO
1462 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1463
96e440d2 1464 if (s && (grok_atou(s, NULL) == 1)) {
7dc86639
YO
1465 unsigned char *seed= PERL_HASH_SEED;
1466 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1467 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1468 while (seed < seed_end) {
1469 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1470 }
6a5b4183
YO
1471#ifdef PERL_HASH_RANDOMIZE_KEYS
1472 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1473 PL_HASH_RAND_BITS_ENABLED,
1474 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1475#endif
7dc86639
YO
1476 PerlIO_printf(Perl_debug_log, "\n");
1477 }
b0891165
JH
1478 }
1479#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1480 PL_origargc = argc;
e2975953 1481 PL_origargv = argv;
a0d0e21e 1482
a2722ac9
GA
1483 if (PL_origalen != 0) {
1484 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1485 }
1486 else {
3cb9023d
JH
1487 /* Set PL_origalen be the sum of the contiguous argv[]
1488 * elements plus the size of the env in case that it is
e9137a8e 1489 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1490 * as the maximum modifiable length of $0. In the worst case
1491 * the area we are able to modify is limited to the size of
43c32782 1492 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1493 * --jhi */
e1ec3a88 1494 const char *s = NULL;
54bfe034 1495 int i;
b7249aaf 1496 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1497 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1498 const UV aligned =
43c32782
JH
1499 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1500
1501 /* See if all the arguments are contiguous in memory. Note
1502 * that 'contiguous' is a loose term because some platforms
1503 * align the argv[] and the envp[]. If the arguments look
1504 * like non-aligned, assume that they are 'strictly' or
1505 * 'traditionally' contiguous. If the arguments look like
1506 * aligned, we just check that they are within aligned
1507 * PTRSIZE bytes. As long as no system has something bizarre
1508 * like the argv[] interleaved with some other data, we are
1509 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1510 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1511 while (*s) s++;
1512 for (i = 1; i < PL_origargc; i++) {
1513 if ((PL_origargv[i] == s + 1
43c32782 1514#ifdef OS2
c8941eeb 1515 || PL_origargv[i] == s + 2
43c32782 1516#endif
c8941eeb
JH
1517 )
1518 ||
1519 (aligned &&
1520 (PL_origargv[i] > s &&
1521 PL_origargv[i] <=
1522 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1523 )
1524 {
1525 s = PL_origargv[i];
1526 while (*s) s++;
1527 }
1528 else
1529 break;
54bfe034 1530 }
54bfe034 1531 }
a4a109c2
JD
1532
1533#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1534 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1535 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1536 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1537 ||
1538 (aligned &&
1539 (PL_origenviron[0] > s &&
1540 PL_origenviron[0] <=
1541 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1542 )
1543 {
9d419b5f 1544#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1545 s = PL_origenviron[0];
1546 while (*s) s++;
1547#endif
bd61b366 1548 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1549 /* Force copy of environment. */
1550 for (i = 1; PL_origenviron[i]; i++) {
1551 if (PL_origenviron[i] == s + 1
1552 ||
1553 (aligned &&
1554 (PL_origenviron[i] > s &&
1555 PL_origenviron[i] <=
1556 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1557 )
1558 {
1559 s = PL_origenviron[i];
1560 while (*s) s++;
1561 }
1562 else
1563 break;
54bfe034 1564 }
43c32782 1565 }
54bfe034 1566 }
a4a109c2
JD
1567#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1568
2d2af554 1569 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1570 }
1571
3280af22 1572 if (PL_do_undump) {
a0d0e21e
LW
1573
1574 /* Come here if running an undumped a.out. */
1575
3280af22
NIS
1576 PL_origfilename = savepv(argv[0]);
1577 PL_do_undump = FALSE;
a0d0e21e 1578 cxstack_ix = -1; /* start label stack again */
748a9306 1579 init_ids();
284167a5 1580 assert (!TAINT_get);
b7975bdd 1581 TAINT;
e2051532 1582 set_caret_X();
b7975bdd 1583 TAINT_NOT;
a0d0e21e
LW
1584 init_postdump_symbols(argc,argv,env);
1585 return 0;
1586 }
1587
3280af22 1588 if (PL_main_root) {
3280af22 1589 op_free(PL_main_root);
5f66b61c 1590 PL_main_root = NULL;
ff0cee69 1591 }
5f66b61c 1592 PL_main_start = NULL;
3280af22 1593 SvREFCNT_dec(PL_main_cv);
601f1833 1594 PL_main_cv = NULL;
79072805 1595
3280af22
NIS
1596 time(&PL_basetime);
1597 oldscope = PL_scopestack_ix;
599cee73 1598 PL_dowarn = G_WARN_OFF;
f86702cc 1599
14dd3ad8 1600 JMPENV_PUSH(ret);
6224f72b 1601 switch (ret) {
312caa8e 1602 case 0:
14dd3ad8 1603 parse_body(env,xsinit);
9ebf26ad 1604 if (PL_unitcheckav) {
3c10abe3 1605 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1606 }
1607 if (PL_checkav) {
ca7b837b 1608 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1609 call_list(oldscope, PL_checkav);
9ebf26ad 1610 }
14dd3ad8
GS
1611 ret = 0;
1612 break;
6224f72b
GS
1613 case 1:
1614 STATUS_ALL_FAILURE;
924ba076 1615 /* FALLTHROUGH */
6224f72b
GS
1616 case 2:
1617 /* my_exit() was called */
3280af22 1618 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1619 LEAVE;
1620 FREETMPS;
03d9f026 1621 SET_CURSTASH(PL_defstash);
9ebf26ad 1622 if (PL_unitcheckav) {
3c10abe3 1623 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1624 }
1625 if (PL_checkav) {
ca7b837b 1626 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1627 call_list(oldscope, PL_checkav);
9ebf26ad 1628 }
37038d91 1629 ret = STATUS_EXIT;
14dd3ad8 1630 break;
6224f72b 1631 case 3:
bf49b057 1632 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1633 ret = 1;
1634 break;
6224f72b 1635 }
14dd3ad8
GS
1636 JMPENV_POP;
1637 return ret;
1638}
1639
4a5df386
NC
1640/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1641 miniperl, and we need to see those flags reflected in the values here. */
1642
1643/* What this returns is subject to change. Use the public interface in Config.
1644 */
1645static void
1646S_Internals_V(pTHX_ CV *cv)
1647{
1648 dXSARGS;
1649#ifdef LOCAL_PATCH_COUNT
1650 const int local_patch_count = LOCAL_PATCH_COUNT;
1651#else
1652 const int local_patch_count = 0;
1653#endif
2dc296d2 1654 const int entries = 3 + local_patch_count;
4a5df386 1655 int i;
fe1c5936 1656 static const char non_bincompat_options[] =
4a5df386
NC
1657# ifdef DEBUGGING
1658 " DEBUGGING"
1659# endif
1660# ifdef NO_MATHOMS
0d311fbe 1661 " NO_MATHOMS"
4a5df386 1662# endif
59b86f4b
DM
1663# ifdef NO_HASH_SEED
1664 " NO_HASH_SEED"
1665# endif
3b0e4ee2
MB
1666# ifdef NO_TAINT_SUPPORT
1667 " NO_TAINT_SUPPORT"
1668# endif
cb26ef7a
MB
1669# ifdef PERL_BOOL_AS_CHAR
1670 " PERL_BOOL_AS_CHAR"
1671# endif
4a5df386
NC
1672# ifdef PERL_DISABLE_PMC
1673 " PERL_DISABLE_PMC"
1674# endif
1675# ifdef PERL_DONT_CREATE_GVSV
1676 " PERL_DONT_CREATE_GVSV"
1677# endif
9a044a43
NC
1678# ifdef PERL_EXTERNAL_GLOB
1679 " PERL_EXTERNAL_GLOB"
1680# endif
59b86f4b
DM
1681# ifdef PERL_HASH_FUNC_SIPHASH
1682 " PERL_HASH_FUNC_SIPHASH"
1683# endif
1684# ifdef PERL_HASH_FUNC_SDBM
1685 " PERL_HASH_FUNC_SDBM"
1686# endif
1687# ifdef PERL_HASH_FUNC_DJB2
1688 " PERL_HASH_FUNC_DJB2"
1689# endif
1690# ifdef PERL_HASH_FUNC_SUPERFAST
1691 " PERL_HASH_FUNC_SUPERFAST"
1692# endif
1693# ifdef PERL_HASH_FUNC_MURMUR3
1694 " PERL_HASH_FUNC_MURMUR3"
1695# endif
1696# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1697 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1698# endif
1699# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1700 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1701# endif
1702# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1703 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1704# endif
4a5df386
NC
1705# ifdef PERL_IS_MINIPERL
1706 " PERL_IS_MINIPERL"
1707# endif
1708# ifdef PERL_MALLOC_WRAP
1709 " PERL_MALLOC_WRAP"
1710# endif
1711# ifdef PERL_MEM_LOG
1712 " PERL_MEM_LOG"
1713# endif
1714# ifdef PERL_MEM_LOG_NOIMPL
1715 " PERL_MEM_LOG_NOIMPL"
1716# endif
2542212d
DM
1717# ifdef PERL_NEW_COPY_ON_WRITE
1718 " PERL_NEW_COPY_ON_WRITE"
1719# endif
59b86f4b
DM
1720# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1721 " PERL_PERTURB_KEYS_DETERMINISTIC"
1722# endif
1723# ifdef PERL_PERTURB_KEYS_DISABLED
1724 " PERL_PERTURB_KEYS_DISABLED"
1725# endif
1726# ifdef PERL_PERTURB_KEYS_RANDOM
1727 " PERL_PERTURB_KEYS_RANDOM"
1728# endif
c3cf41ec
NC
1729# ifdef PERL_PRESERVE_IVUV
1730 " PERL_PRESERVE_IVUV"
1731# endif
c051e30b
NC
1732# ifdef PERL_RELOCATABLE_INCPUSH
1733 " PERL_RELOCATABLE_INCPUSH"
1734# endif
4a5df386
NC
1735# ifdef PERL_USE_DEVEL
1736 " PERL_USE_DEVEL"
1737# endif
1738# ifdef PERL_USE_SAFE_PUTENV
1739 " PERL_USE_SAFE_PUTENV"
1740# endif
a3749cf3
NC
1741# ifdef UNLINK_ALL_VERSIONS
1742 " UNLINK_ALL_VERSIONS"
1743# endif
de618ee4
NC
1744# ifdef USE_ATTRIBUTES_FOR_PERLIO
1745 " USE_ATTRIBUTES_FOR_PERLIO"
1746# endif
4a5df386
NC
1747# ifdef USE_FAST_STDIO
1748 " USE_FAST_STDIO"
1749# endif
59b86f4b
DM
1750# ifdef USE_HASH_SEED_EXPLICIT
1751 " USE_HASH_SEED_EXPLICIT"
1752# endif
98548bdf
NC
1753# ifdef USE_LOCALE
1754 " USE_LOCALE"
1755# endif
98548bdf
NC
1756# ifdef USE_LOCALE_CTYPE
1757 " USE_LOCALE_CTYPE"
1758# endif
5a8d8935
NC
1759# ifdef USE_PERL_ATOF
1760 " USE_PERL_ATOF"
1761# endif
0d311fbe
NC
1762# ifdef USE_SITECUSTOMIZE
1763 " USE_SITECUSTOMIZE"
1764# endif
4a5df386
NC
1765 ;
1766 PERL_UNUSED_ARG(cv);
1767 PERL_UNUSED_ARG(items);
1768
1769 EXTEND(SP, entries);
1770
1771 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1772 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1773 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1774
1775#ifdef __DATE__
1776# ifdef __TIME__
1777 PUSHs(Perl_newSVpvn_flags(aTHX_
1778 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1779 SVs_TEMP));
1780# else
1781 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1782 SVs_TEMP));
1783# endif
1784#else
1785 PUSHs(&PL_sv_undef);
1786#endif
1787
4a5df386
NC
1788 for (i = 1; i <= local_patch_count; i++) {
1789 /* This will be an undef, if PL_localpatches[i] is NULL. */
1790 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1791 }
1792
1793 XSRETURN(entries);
1794}
1795
be71fc8f
NC
1796#define INCPUSH_UNSHIFT 0x01
1797#define INCPUSH_ADD_OLD_VERS 0x02
1798#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1799#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1800#define INCPUSH_NOT_BASEDIR 0x10
1801#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1802#define INCPUSH_ADD_SUB_DIRS \
1803 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1804
312caa8e 1805STATIC void *
14dd3ad8 1806S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1807{
27da23d5 1808 dVAR;
2f9285f8 1809 PerlIO *rsfp;
312caa8e 1810 int argc = PL_origargc;
8f42b153 1811 char **argv = PL_origargv;
e1ec3a88 1812 const char *scriptname = NULL;
312caa8e 1813 VOL bool dosearch = FALSE;
eb578fdb 1814 char c;
737c24fc 1815 bool doextract = FALSE;
bd61b366 1816 const char *cddir = NULL;
ab019eaa 1817#ifdef USE_SITECUSTOMIZE
20ef40cf 1818 bool minus_f = FALSE;
ab019eaa 1819#endif
95670bde 1820 SV *linestr_sv = NULL;
5486870f 1821 bool add_read_e_script = FALSE;
87606032 1822 U32 lex_start_flags = 0;
009d90df 1823
ca7b837b 1824 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1825
6224f72b 1826 init_main_stash();
54310121 1827
c7030b81
NC
1828 {
1829 const char *s;
6224f72b
GS
1830 for (argc--,argv++; argc > 0; argc--,argv++) {
1831 if (argv[0][0] != '-' || !argv[0][1])
1832 break;
6224f72b
GS
1833 s = argv[0]+1;
1834 reswitch:
47f56822 1835 switch ((c = *s)) {
729a02f2 1836 case 'C':
1d5472a9
GS
1837#ifndef PERL_STRICT_CR
1838 case '\r':
1839#endif
6224f72b
GS
1840 case ' ':
1841 case '0':
1842 case 'F':
1843 case 'a':
1844 case 'c':
1845 case 'd':
1846 case 'D':
1847 case 'h':
1848 case 'i':
1849 case 'l':
1850 case 'M':
1851 case 'm':
1852 case 'n':
1853 case 'p':
1854 case 's':
1855 case 'u':
1856 case 'U':
1857 case 'v':
599cee73
PM
1858 case 'W':
1859 case 'X':
6224f72b 1860 case 'w':
97bd5664 1861 if ((s = moreswitches(s)))
6224f72b
GS
1862 goto reswitch;
1863 break;
33b78306 1864
1dbad523 1865 case 't':
dc6d7f5c 1866#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1867 /* silently ignore */
dc6d7f5c 1868#elif defined(NO_TAINT_SUPPORT)
3231f579 1869 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1870 "Cowardly refusing to run with -t or -T flags");
1871#else
22f7c9c9 1872 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1873 if( !TAINTING_get ) {
1874 TAINT_WARN_set(TRUE);
1875 TAINTING_set(TRUE);
317ea90d 1876 }
284167a5 1877#endif
317ea90d
MS
1878 s++;
1879 goto reswitch;
6224f72b 1880 case 'T':
dc6d7f5c 1881#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1882 /* silently ignore */
dc6d7f5c 1883#elif defined(NO_TAINT_SUPPORT)
3231f579 1884 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1885 "Cowardly refusing to run with -t or -T flags");
1886#else
22f7c9c9 1887 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1888 TAINTING_set(TRUE);
1889 TAINT_WARN_set(FALSE);
1890#endif
6224f72b
GS
1891 s++;
1892 goto reswitch;
f86702cc 1893
bc9b29db
RH
1894 case 'E':
1895 PL_minus_E = TRUE;
924ba076 1896 /* FALLTHROUGH */
6224f72b 1897 case 'e':
f20b2998 1898 forbid_setid('e', FALSE);
3280af22 1899 if (!PL_e_script) {
396482e1 1900 PL_e_script = newSVpvs("");
5486870f 1901 add_read_e_script = TRUE;
6224f72b
GS
1902 }
1903 if (*++s)
3280af22 1904 sv_catpv(PL_e_script, s);
6224f72b 1905 else if (argv[1]) {
3280af22 1906 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1907 argc--,argv++;
1908 }
1909 else
47f56822 1910 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1911 sv_catpvs(PL_e_script, "\n");
6224f72b 1912 break;
afe37c7d 1913
20ef40cf 1914 case 'f':
f5542d3a 1915#ifdef USE_SITECUSTOMIZE
20ef40cf 1916 minus_f = TRUE;
f5542d3a 1917#endif
20ef40cf
GA
1918 s++;
1919 goto reswitch;
1920
6224f72b 1921 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1922 forbid_setid('I', FALSE);
bd61b366 1923 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1924 argc--,argv++;
1925 }
6224f72b 1926 if (s && *s) {
0df16ed7 1927 STRLEN len = strlen(s);
55b4bc1c 1928 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1929 }
1930 else
a67e862a 1931 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1932 break;
6224f72b 1933 case 'S':
f20b2998 1934 forbid_setid('S', FALSE);
6224f72b
GS
1935 dosearch = TRUE;
1936 s++;
1937 goto reswitch;
1938 case 'V':
7edfd0ef
NC
1939 {
1940 SV *opts_prog;
1941
7edfd0ef 1942 if (*++s != ':') {
37ca4a5b 1943 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1944 }
1945 else {
1946 ++s;
1947 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1948 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1949 0, s, 0);
1950 s += strlen(s);
1951 }
37ca4a5b 1952 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1953 /* don't look for script or read stdin */
1954 scriptname = BIT_BUCKET;
1955 goto reswitch;
6224f72b 1956 }
6224f72b 1957 case 'x':
737c24fc 1958 doextract = TRUE;
6224f72b 1959 s++;
304334da 1960 if (*s)
f4c556ac 1961 cddir = s;
6224f72b
GS
1962 break;
1963 case 0:
1964 break;
1965 case '-':
1966 if (!*++s || isSPACE(*s)) {
1967 argc--,argv++;
1968 goto switch_end;
1969 }
ee8bc8b7
NC
1970 /* catch use of gnu style long options.
1971 Both of these exit immediately. */
1972 if (strEQ(s, "version"))
1973 minus_v();
1974 if (strEQ(s, "help"))
1975 usage();
6224f72b 1976 s--;
924ba076 1977 /* FALLTHROUGH */
6224f72b 1978 default:
cea2e8a9 1979 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1980 }
1981 }
c7030b81
NC
1982 }
1983
6224f72b 1984 switch_end:
54310121 1985
c7030b81
NC
1986 {
1987 char *s;
1988
f675dbe5
CB
1989 if (
1990#ifndef SECURE_INTERNAL_GETENV
284167a5 1991 !TAINTING_get &&
f675dbe5 1992#endif
cf756827 1993 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1994 {
74288ac8
GS
1995 while (isSPACE(*s))
1996 s++;
317ea90d 1997 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 1998#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1999 /* silently ignore */
dc6d7f5c 2000#elif defined(NO_TAINT_SUPPORT)
3231f579 2001 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2002 "Cowardly refusing to run with -t or -T flags");
2003#else
22f7c9c9 2004 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2005 TAINTING_set(TRUE);
2006 TAINT_WARN_set(FALSE);
2007#endif
317ea90d 2008 }
74288ac8 2009 else {
bd61b366 2010 char *popt_copy = NULL;
74288ac8 2011 while (s && *s) {
54913509 2012 const char *d;
74288ac8
GS
2013 while (isSPACE(*s))
2014 s++;
2015 if (*s == '-') {
2016 s++;
2017 if (isSPACE(*s))
2018 continue;
2019 }
4ea8f8fb 2020 d = s;
74288ac8
GS
2021 if (!*s)
2022 break;
2b622f1a 2023 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2024 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2025 while (++s && *s) {
2026 if (isSPACE(*s)) {
cf756827 2027 if (!popt_copy) {
bfa6c418
NC
2028 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2029 s = popt_copy + (s - d);
2030 d = popt_copy;
cf756827 2031 }
4ea8f8fb
MS
2032 *s++ = '\0';
2033 break;
2034 }
2035 }
1c4db469 2036 if (*d == 't') {
dc6d7f5c 2037#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2038 /* silently ignore */
dc6d7f5c 2039#elif defined(NO_TAINT_SUPPORT)
3231f579 2040 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2041 "Cowardly refusing to run with -t or -T flags");
2042#else
2043 if( !TAINTING_get) {
2044 TAINT_WARN_set(TRUE);
2045 TAINTING_set(TRUE);
317ea90d 2046 }
284167a5 2047#endif
1c4db469 2048 } else {
97bd5664 2049 moreswitches(d);
1c4db469 2050 }
6224f72b 2051 }
6224f72b
GS
2052 }
2053 }
c7030b81 2054 }
a0d0e21e 2055
c29067d7
CH
2056 /* Set $^X early so that it can be used for relocatable paths in @INC */
2057 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2058 assert (!TAINT_get);
c29067d7 2059 TAINT;
e2051532 2060 set_caret_X();
c29067d7
CH
2061 TAINT_NOT;
2062
43c0c913 2063#if defined(USE_SITECUSTOMIZE)
20ef40cf 2064 if (!minus_f) {
43c0c913 2065 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2066 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2067 ie a q() operator with a NUL byte as a the delimiter. This avoids
2068 problems with pathnames containing (say) ' */
43c0c913
NC
2069# ifdef PERL_IS_MINIPERL
2070 AV *const inc = GvAV(PL_incgv);
2071 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2072
2073 if (inc0) {
15870c5c
NC
2074 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2075 it should be reported immediately as a build failure. */
43c0c913
NC
2076 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2077 Perl_newSVpvf(aTHX_
5de87db5 2078 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2079 "do {local $!; -f $f }"
2080 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2081 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2082 }
2083# else
2084 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2085 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2086 if (raw_sitelib) {
2087 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2088 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2089 INCPUSH_CAN_RELOCATE);
2090 const char *const sitelib = SvPVX(sitelib_sv);
2091 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2092 Perl_newSVpvf(aTHX_
2093 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2094 0, SVfARG(sitelib), 0,
2095 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2096 assert (SvREFCNT(sitelib_sv) == 1);
2097 SvREFCNT_dec(sitelib_sv);
2098 }
43c0c913 2099# endif
20ef40cf
GA
2100 }
2101#endif
2102
6224f72b
GS
2103 if (!scriptname)
2104 scriptname = argv[0];
3280af22 2105 if (PL_e_script) {
6224f72b
GS
2106 argc++,argv--;
2107 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2108 }
bd61b366 2109 else if (scriptname == NULL) {
6224f72b
GS
2110#ifdef MSDOS
2111 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2112 moreswitches("h");
6224f72b
GS
2113#endif
2114 scriptname = "-";
2115 }
2116
284167a5 2117 assert (!TAINT_get);
2cace6ac 2118 init_perllib();
6224f72b 2119
a52eba0e 2120 {
f20b2998 2121 bool suidscript = FALSE;
829372d3 2122
8d113837 2123 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2124 if (!rsfp) {
2125 rsfp = PerlIO_stdin();
87606032 2126 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2127 }
6224f72b 2128
b24bc095 2129 validate_suid(rsfp);
6224f72b 2130
64ca3a65 2131#ifndef PERL_MICRO
a52eba0e
NC
2132# if defined(SIGCHLD) || defined(SIGCLD)
2133 {
2134# ifndef SIGCHLD
2135# define SIGCHLD SIGCLD
2136# endif
2137 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2138 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2139 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2140 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2141 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2142 }
0b5b802d 2143 }
a52eba0e 2144# endif
64ca3a65 2145#endif
0b5b802d 2146
737c24fc 2147 if (doextract) {
faef540c 2148
f20b2998 2149 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2150 setuid scripts. */
2151 forbid_setid('x', suidscript);
f20b2998 2152 /* Hence you can't get here if suidscript is true */
faef540c 2153
95670bde
NC
2154 linestr_sv = newSV_type(SVt_PV);
2155 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2156 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2157 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2158 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2159 }
f4c556ac 2160 }
6224f72b 2161
ea726b52 2162 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2163 CvUNIQUE_on(PL_compcv);
2164
dd2155a4 2165 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2166
dd69841b
BB
2167 PL_isarev = newHV();
2168
0c4f7ff0 2169 boot_core_PerlIO();
6224f72b 2170 boot_core_UNIVERSAL();
e1a479c5 2171 boot_core_mro();
4a5df386 2172 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2173
2174 if (xsinit)
acfe0abc 2175 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2176#ifndef PERL_MICRO
739a0b84 2177#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2178 init_os_extras();
6224f72b 2179#endif
64ca3a65 2180#endif
6224f72b 2181
29209bc5 2182#ifdef USE_SOCKS
1b9c9cf5
DH
2183# ifdef HAS_SOCKS5_INIT
2184 socks5_init(argv[0]);
2185# else
29209bc5 2186 SOCKSinit(argv[0]);
1b9c9cf5 2187# endif
ac27b0f5 2188#endif
29209bc5 2189
6224f72b
GS
2190 init_predump_symbols();
2191 /* init_postdump_symbols not currently designed to be called */
2192 /* more than once (ENV isn't cleared first, for example) */
2193 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2194 if (!PL_do_undump)
6224f72b
GS
2195 init_postdump_symbols(argc,argv,env);
2196
27da23d5
JH
2197 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2198 * or explicitly in some platforms.
085a54d9 2199 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2200 * look like the user wants to use UTF-8. */
a0fd4948 2201#if defined(__SYMBIAN32__)
27da23d5
JH
2202 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2203#endif
e27b5b51 2204# ifndef PERL_IS_MINIPERL
06e66572
JH
2205 if (PL_unicode) {
2206 /* Requires init_predump_symbols(). */
a05d7ebb 2207 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2208 IO* io;
2209 PerlIO* fp;
2210 SV* sv;
2211
a05d7ebb 2212 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2213 * and the default open disciplines. */
a05d7ebb
JH
2214 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2215 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2216 (fp = IoIFP(io)))
2217 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2218 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2219 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2220 (fp = IoOFP(io)))
2221 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2222 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2223 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2224 (fp = IoOFP(io)))
2225 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2226 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2227 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2228 SVt_PV)))) {
a05d7ebb
JH
2229 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2230 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2231 if (in) {
2232 if (out)
76f68e9b 2233 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2234 else
76f68e9b 2235 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2236 }
2237 else if (out)
76f68e9b 2238 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2239 SvSETMAGIC(sv);
2240 }
b310b053
JH
2241 }
2242 }
e27b5b51 2243#endif
b310b053 2244
c7030b81
NC
2245 {
2246 const char *s;
4ffa73a3
JH
2247 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2248 if (strEQ(s, "unsafe"))
2249 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2250 else if (strEQ(s, "safe"))
2251 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2252 else
2253 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2254 }
c7030b81 2255 }
4ffa73a3 2256
81d86705 2257
87606032 2258 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2259 SvREFCNT_dec(linestr_sv);
95670bde 2260
219f7226 2261 PL_subname = newSVpvs("main");
6224f72b 2262
5486870f
DM
2263 if (add_read_e_script)
2264 filter_add(read_e_script, NULL);
2265
6224f72b
GS
2266 /* now parse the script */
2267
93189314 2268 SETERRNO(0,SS_NORMAL);
28ac2b49 2269 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2270 if (PL_minus_c)
cea2e8a9 2271 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2272 else {
cea2e8a9 2273 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2274 PL_origfilename);
6224f72b
GS
2275 }
2276 }
57843af0 2277 CopLINE_set(PL_curcop, 0);
03d9f026 2278 SET_CURSTASH(PL_defstash);
3280af22
NIS
2279 if (PL_e_script) {
2280 SvREFCNT_dec(PL_e_script);
a0714e2c 2281 PL_e_script = NULL;
6224f72b
GS
2282 }
2283
3280af22 2284 if (PL_do_undump)
6224f72b
GS
2285 my_unexec();
2286
57843af0
GS
2287 if (isWARN_ONCE) {
2288 SAVECOPFILE(PL_curcop);
2289 SAVECOPLINE(PL_curcop);
3280af22 2290 gv_check(PL_defstash);
57843af0 2291 }
6224f72b
GS
2292
2293 LEAVE;
2294 FREETMPS;
2295
2296#ifdef MYMALLOC
f6a607bc
RGS
2297 {
2298 const char *s;
96e440d2
JH
2299 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2300 dump_mstats("after compilation:");
f6a607bc 2301 }
6224f72b
GS
2302#endif
2303
2304 ENTER;
febb3a6d 2305 PL_restartjmpenv = NULL;
3280af22 2306 PL_restartop = 0;
312caa8e 2307 return NULL;
6224f72b
GS
2308}
2309
954c1994
GS
2310/*
2311=for apidoc perl_run
2312
2313Tells a Perl interpreter to run. See L<perlembed>.
2314
2315=cut
2316*/
2317
6224f72b 2318int
0cb96387 2319perl_run(pTHXx)
6224f72b 2320{
6224f72b 2321 I32 oldscope;
14dd3ad8 2322 int ret = 0;
db36c5a1 2323 dJMPENV;
6224f72b 2324
7918f24d
NC
2325 PERL_ARGS_ASSERT_PERL_RUN;
2326#ifndef MULTIPLICITY
ed6c66dd 2327 PERL_UNUSED_ARG(my_perl);
7918f24d 2328#endif
9d4ba2ae 2329
3280af22 2330 oldscope = PL_scopestack_ix;
96e176bf
CL
2331#ifdef VMS
2332 VMSISH_HUSHED = 0;
2333#endif
6224f72b 2334
14dd3ad8 2335 JMPENV_PUSH(ret);
6224f72b
GS
2336 switch (ret) {
2337 case 1:
2338 cxstack_ix = -1; /* start context stack again */
312caa8e 2339 goto redo_body;
14dd3ad8 2340 case 0: /* normal completion */
14dd3ad8
GS
2341 redo_body:
2342 run_body(oldscope);
924ba076 2343 /* FALLTHROUGH */
14dd3ad8 2344 case 2: /* my_exit() */
3280af22 2345 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2346 LEAVE;
2347 FREETMPS;
03d9f026 2348 SET_CURSTASH(PL_defstash);
3a1ee7e8 2349 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2350 PL_endav && !PL_minus_c) {
ca7b837b 2351 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2352 call_list(oldscope, PL_endav);
9ebf26ad 2353 }
6224f72b
GS
2354#ifdef MYMALLOC
2355 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2356 dump_mstats("after execution: ");
2357#endif
37038d91 2358 ret = STATUS_EXIT;
14dd3ad8 2359 break;
6224f72b 2360 case 3:
312caa8e
CS
2361 if (PL_restartop) {
2362 POPSTACK_TO(PL_mainstack);
2363 goto redo_body;
6224f72b 2364 }
5637ef5b 2365 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2366 FREETMPS;
14dd3ad8
GS
2367 ret = 1;
2368 break;
6224f72b
GS
2369 }
2370
14dd3ad8
GS
2371 JMPENV_POP;
2372 return ret;
312caa8e
CS
2373}
2374
dd374669 2375STATIC void
14dd3ad8
GS
2376S_run_body(pTHX_ I32 oldscope)
2377{
d3b97530
DM
2378 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2379 PL_sawampersand ? "Enabling" : "Omitting",
2380 (unsigned int)(PL_sawampersand)));
6224f72b 2381
3280af22 2382 if (!PL_restartop) {
cf2782cd 2383#ifdef DEBUGGING
f0e3f042
CS
2384 if (DEBUG_x_TEST || DEBUG_B_TEST)
2385 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2386 if (!DEBUG_q_TEST)
2387 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2388#endif
6224f72b 2389
3280af22 2390 if (PL_minus_c) {
bf49b057 2391 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2392 my_exit(0);
2393 }
3280af22 2394 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2395 PL_DBsingle_iv = 1;
9ebf26ad 2396 if (PL_initav) {
ca7b837b 2397 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2398 call_list(oldscope, PL_initav);
9ebf26ad 2399 }
f1fac472 2400#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2401 if (PL_main_root && PL_main_root->op_slabbed)
2402 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2403#endif
6224f72b
GS
2404 }
2405
2406 /* do it */
2407
ca7b837b 2408 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2409
3280af22 2410 if (PL_restartop) {
febb3a6d 2411 PL_restartjmpenv = NULL;
533c011a 2412 PL_op = PL_restartop;
3280af22 2413 PL_restartop = 0;
cea2e8a9 2414 CALLRUNOPS(aTHX);
6224f72b 2415 }
3280af22
NIS
2416 else if (PL_main_start) {
2417 CvDEPTH(PL_main_cv) = 1;
533c011a 2418 PL_op = PL_main_start;
cea2e8a9 2419 CALLRUNOPS(aTHX);
6224f72b 2420 }
f6b3007c 2421 my_exit(0);
a25b5927 2422 assert(0); /* NOTREACHED */
6224f72b
GS
2423}
2424
954c1994 2425/*
ccfc67b7
JH
2426=head1 SV Manipulation Functions
2427
954c1994
GS
2428=for apidoc p||get_sv
2429
64ace3f8 2430Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2431C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2432Perl variable does not exist then it will be created. If C<flags> is zero
2433and the variable does not exist then NULL is returned.
954c1994
GS
2434
2435=cut
2436*/
2437
6224f72b 2438SV*
64ace3f8 2439Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2440{
2441 GV *gv;
7918f24d
NC
2442
2443 PERL_ARGS_ASSERT_GET_SV;
2444
64ace3f8 2445 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2446 if (gv)
2447 return GvSV(gv);
a0714e2c 2448 return NULL;
6224f72b
GS
2449}
2450
954c1994 2451/*
ccfc67b7
JH
2452=head1 Array Manipulation Functions
2453
954c1994
GS
2454=for apidoc p||get_av
2455
f0b90de1
SF
2456Returns the AV of the specified Perl global or package array with the given
2457name (so it won't work on lexical variables). C<flags> are passed
72d33970 2458to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2459Perl variable does not exist then it will be created. If C<flags> is zero
2460and the variable does not exist then NULL is returned.
954c1994 2461
f0b90de1
SF
2462Perl equivalent: C<@{"$name"}>.
2463
954c1994
GS
2464=cut
2465*/
2466
6224f72b 2467AV*
cbfd0a87 2468Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2469{
cbfd0a87 2470 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2471
2472 PERL_ARGS_ASSERT_GET_AV;
2473
cbfd0a87 2474 if (flags)
6224f72b
GS
2475 return GvAVn(gv);
2476 if (gv)
2477 return GvAV(gv);
7d49f689 2478 return NULL;
6224f72b
GS
2479}
2480
954c1994 2481/*
ccfc67b7
JH
2482=head1 Hash Manipulation Functions
2483
954c1994
GS
2484=for apidoc p||get_hv
2485
6673a63c 2486Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2487C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2488Perl variable does not exist then it will be created. If C<flags> is zero
2489and the variable does not exist then NULL is returned.
954c1994
GS
2490
2491=cut
2492*/
2493
6224f72b 2494HV*
6673a63c 2495Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2496{
6673a63c 2497 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2498
2499 PERL_ARGS_ASSERT_GET_HV;
2500
6673a63c 2501 if (flags)
a0d0e21e
LW
2502 return GvHVn(gv);
2503 if (gv)
2504 return GvHV(gv);
5c284bb0 2505 return NULL;
a0d0e21e
LW
2506}
2507
954c1994 2508/*
ccfc67b7
JH
2509=head1 CV Manipulation Functions
2510
780a5241
NC
2511=for apidoc p||get_cvn_flags
2512
2513Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2514C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2515exist then it will be declared (which has the same effect as saying
2516C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2517then NULL is returned.
2518
954c1994
GS
2519=for apidoc p||get_cv
2520
780a5241 2521Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2522
2523=cut
2524*/
2525
a0d0e21e 2526CV*
780a5241 2527Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2528{
780a5241 2529 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2530
2531 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2532
334dda80
FC
2533 /* XXX this is probably not what they think they're getting.
2534 * It has the same effect as "sub name;", i.e. just a forward
2535 * declaration! */
780a5241 2536 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2537 return newSTUB(gv,0);
780a5241 2538 }
a0d0e21e 2539 if (gv)
8ebc5c01 2540 return GvCVu(gv);
601f1833 2541 return NULL;
a0d0e21e
LW
2542}
2543
2c67934f
NC
2544/* Nothing in core calls this now, but we can't replace it with a macro and
2545 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2546CV*
2547Perl_get_cv(pTHX_ const char *name, I32 flags)
2548{
7918f24d
NC
2549 PERL_ARGS_ASSERT_GET_CV;
2550
780a5241
NC
2551 return get_cvn_flags(name, strlen(name), flags);
2552}
2553
79072805
LW
2554/* Be sure to refetch the stack pointer after calling these routines. */
2555
954c1994 2556/*
ccfc67b7
JH
2557
2558=head1 Callback Functions
2559
954c1994
GS
2560=for apidoc p||call_argv
2561
f0b90de1 2562Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2563with C<argv> (a NULL-terminated array of strings) as arguments. See
2564L<perlcall>.
f0b90de1
SF
2565
2566Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2567
2568=cut
2569*/
2570
a0d0e21e 2571I32
5aaab254 2572Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2573
8ac85365
NIS
2574 /* See G_* flags in cop.h */
2575 /* null terminated arg list */
8990e307 2576{
a0d0e21e 2577 dSP;
8990e307 2578
7918f24d
NC
2579 PERL_ARGS_ASSERT_CALL_ARGV;
2580
924508f0 2581 PUSHMARK(SP);
a0d0e21e 2582 if (argv) {
8990e307 2583 while (*argv) {
6e449a3a 2584 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2585 argv++;
2586 }
a0d0e21e 2587 PUTBACK;
8990e307 2588 }
864dbfa3 2589 return call_pv(sub_name, flags);
8990e307
LW
2590}
2591
954c1994
GS
2592/*
2593=for apidoc p||call_pv
2594
2595Performs a callback to the specified Perl sub. See L<perlcall>.
2596
2597=cut
2598*/
2599
a0d0e21e 2600I32
864dbfa3 2601Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2602 /* name of the subroutine */
2603 /* See G_* flags in cop.h */
a0d0e21e 2604{
7918f24d
NC
2605 PERL_ARGS_ASSERT_CALL_PV;
2606
0da0e728 2607 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2608}
2609
954c1994
GS
2610/*
2611=for apidoc p||call_method
2612
2613Performs a callback to the specified Perl method. The blessed object must
2614be on the stack. See L<perlcall>.
2615
2616=cut
2617*/
2618
a0d0e21e 2619I32
864dbfa3 2620Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2621 /* name of the subroutine */
2622 /* See G_* flags in cop.h */
a0d0e21e 2623{
46ca9bac 2624 STRLEN len;
c106c2be 2625 SV* sv;
7918f24d
NC
2626 PERL_ARGS_ASSERT_CALL_METHOD;
2627
46ca9bac 2628 len = strlen(methname);
c106c2be
RZ
2629 sv = flags & G_METHOD_NAMED
2630 ? sv_2mortal(newSVpvn_share(methname, len,0))
2631 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2632
c106c2be 2633 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2634}
2635
2636/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2637/*
2638=for apidoc p||call_sv
2639
2640Performs a callback to the Perl sub whose name is in the SV. See
2641L<perlcall>.
2642
2643=cut
2644*/
2645
a0d0e21e 2646I32
001d637e 2647Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2648 /* See G_* flags in cop.h */
a0d0e21e 2649{
27da23d5 2650 dVAR; dSP;
a0d0e21e 2651 LOGOP myop; /* fake syntax tree node */
b46e009d 2652 METHOP method_op;
aa689395 2653 I32 oldmark;
8ea43dc8 2654 VOL I32 retval = 0;
a0d0e21e 2655 I32 oldscope;
54310121 2656 bool oldcatch = CATCH_GET;
6224f72b 2657 int ret;
c4420975 2658 OP* const oldop = PL_op;
db36c5a1 2659 dJMPENV;
1e422769 2660
7918f24d
NC
2661 PERL_ARGS_ASSERT_CALL_SV;
2662
a0d0e21e
LW
2663 if (flags & G_DISCARD) {
2664 ENTER;
2665 SAVETMPS;
2666 }
2f8edad0
NC
2667 if (!(flags & G_WANT)) {
2668 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2669 */
2670 flags |= G_SCALAR;
2671 }
a0d0e21e 2672
aa689395 2673 Zero(&myop, 1, LOGOP);
f51d4af5 2674 if (!(flags & G_NOARGS))
aa689395 2675 myop.op_flags |= OPf_STACKED;
4f911530 2676 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2677 SAVEOP();
533c011a 2678 PL_op = (OP*)&myop;
aa689395 2679
3280af22 2680 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2681 if (!(flags & G_METHOD_NAMED))
2682 *++PL_stack_sp = sv;
aa689395 2683 oldmark = TOPMARK;
3280af22 2684 oldscope = PL_scopestack_ix;
a0d0e21e 2685
3280af22 2686 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2687 /* Handle first BEGIN of -d. */
3280af22 2688 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2689 /* Try harder, since this may have been a sighandler, thus
2690 * curstash may be meaningless. */
ea726b52 2691 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2692 && !(flags & G_NODEBUG))
5ff48db8 2693 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2694
c106c2be 2695 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2696 Zero(&method_op, 1, METHOP);
2697 method_op.op_next = (OP*)&myop;
2698 PL_op = (OP*)&method_op;
c106c2be 2699 if ( flags & G_METHOD_NAMED ) {
b46e009d 2700 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2701 method_op.op_type = OP_METHOD_NAMED;
2702 method_op.op_u.op_meth_sv = sv;
c106c2be 2703 } else {
b46e009d 2704 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2705 method_op.op_type = OP_METHOD;
c106c2be
RZ
2706 }
2707 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2708 myop.op_type = OP_ENTERSUB;
968b3946
GS
2709 }
2710
312caa8e 2711 if (!(flags & G_EVAL)) {
0cdb2077 2712 CATCH_SET(TRUE);
d6f07c05 2713 CALL_BODY_SUB((OP*)&myop);
312caa8e 2714 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2715 CATCH_SET(oldcatch);
312caa8e
CS
2716 }
2717 else {
d78bda3d 2718 myop.op_other = (OP*)&myop;
3280af22 2719 PL_markstack_ptr--;
edb2152a 2720 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2721 PL_markstack_ptr++;
a0d0e21e 2722
14dd3ad8 2723 JMPENV_PUSH(ret);
edb2152a 2724
6224f72b
GS
2725 switch (ret) {
2726 case 0:
14dd3ad8 2727 redo_body:
d6f07c05 2728 CALL_BODY_SUB((OP*)&myop);
312caa8e 2729 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2730 if (!(flags & G_KEEPERR)) {
ab69dbc2 2731 CLEAR_ERRSV();
8433848b 2732 }
a0d0e21e 2733 break;
6224f72b 2734 case 1:
f86702cc 2735 STATUS_ALL_FAILURE;
924ba076 2736 /* FALLTHROUGH */
6224f72b 2737 case 2:
a0d0e21e 2738 /* my_exit() was called */
03d9f026 2739 SET_CURSTASH(PL_defstash);
a0d0e21e 2740 FREETMPS;
14dd3ad8 2741 JMPENV_POP;
f86702cc 2742 my_exit_jump();
a25b5927 2743 assert(0); /* NOTREACHED */
6224f72b 2744 case 3:
3280af22 2745 if (PL_restartop) {
febb3a6d 2746 PL_restartjmpenv = NULL;
533c011a 2747 PL_op = PL_restartop;
3280af22 2748 PL_restartop = 0;
312caa8e 2749 goto redo_body;
a0d0e21e 2750 }
3280af22 2751 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2752 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2753 retval = 0;
2754 else {
2755 retval = 1;
3280af22 2756 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2757 }
312caa8e 2758 break;
a0d0e21e 2759 }
a0d0e21e 2760
edb2152a
NC
2761 if (PL_scopestack_ix > oldscope)
2762 delete_eval_scope();
14dd3ad8 2763 JMPENV_POP;
a0d0e21e 2764 }
1e422769 2765
a0d0e21e 2766 if (flags & G_DISCARD) {
3280af22 2767 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2768 retval = 0;
2769 FREETMPS;
2770 LEAVE;
2771 }
533c011a 2772 PL_op = oldop;
a0d0e21e
LW
2773 return retval;
2774}
2775
6e72f9df 2776/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2777
954c1994
GS
2778/*
2779=for apidoc p||eval_sv
2780
72d33970
FC
2781Tells Perl to C<eval> the string in the SV. It supports the same flags
2782as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2783
2784=cut
2785*/
2786
a0d0e21e 2787I32
864dbfa3 2788Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2789
8ac85365 2790 /* See G_* flags in cop.h */
a0d0e21e 2791{
97aff369 2792 dVAR;
924508f0 2793 dSP;
a0d0e21e 2794 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2795 VOL I32 oldmark = SP - PL_stack_base;
2796 VOL I32 retval = 0;
6224f72b 2797 int ret;
c4420975 2798 OP* const oldop = PL_op;
db36c5a1 2799 dJMPENV;
84902520 2800
7918f24d
NC
2801 PERL_ARGS_ASSERT_EVAL_SV;
2802
4633a7c4
LW
2803 if (flags & G_DISCARD) {
2804 ENTER;
2805 SAVETMPS;
2806 }
2807
462e5cf6 2808 SAVEOP();
533c011a 2809 PL_op = (OP*)&myop;
5ff48db8 2810 Zero(&myop, 1, UNOP);
3280af22
NIS
2811 EXTEND(PL_stack_sp, 1);
2812 *++PL_stack_sp = sv;
79072805 2813
4633a7c4
LW
2814 if (!(flags & G_NOARGS))
2815 myop.op_flags = OPf_STACKED;
6e72f9df 2816 myop.op_type = OP_ENTEREVAL;
4f911530 2817 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2818 if (flags & G_KEEPERR)
2819 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2820
2821 if (flags & G_RE_REPARSING)
2822 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2823
dedbcade
DM
2824 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2825 * before a PUSHEVAL, which corrupts the stack after a croak */
2826 TAINT_PROPER("eval_sv()");
2827
14dd3ad8 2828 JMPENV_PUSH(ret);
6224f72b
GS
2829 switch (ret) {
2830 case 0:
14dd3ad8 2831 redo_body:
2ba65d5f
DM
2832 if (PL_op == (OP*)(&myop)) {
2833 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2834 if (!PL_op)
2835 goto fail; /* failed in compilation */
2836 }
4aca2f62 2837 CALLRUNOPS(aTHX);
312caa8e 2838 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2839 if (!(flags & G_KEEPERR)) {
ab69dbc2 2840 CLEAR_ERRSV();
8433848b 2841 }
4633a7c4 2842 break;
6224f72b 2843 case 1:
f86702cc 2844 STATUS_ALL_FAILURE;
924ba076 2845 /* FALLTHROUGH */
6224f72b 2846 case 2:
4633a7c4 2847 /* my_exit() was called */
03d9f026 2848 SET_CURSTASH(PL_defstash);
4633a7c4 2849 FREETMPS;
14dd3ad8 2850 JMPENV_POP;
f86702cc 2851 my_exit_jump();
a25b5927 2852 assert(0); /* NOTREACHED */
6224f72b 2853 case 3:
3280af22 2854 if (PL_restartop) {
febb3a6d 2855 PL_restartjmpenv = NULL;
533c011a 2856 PL_op = PL_restartop;
3280af22 2857 PL_restartop = 0;
312caa8e 2858 goto redo_body;
4633a7c4 2859 }
4aca2f62 2860 fail:
3280af22 2861 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2862 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2863 retval = 0;
2864 else {
2865 retval = 1;
3280af22 2866 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2867 }
312caa8e 2868 break;
4633a7c4
LW
2869 }
2870
14dd3ad8 2871 JMPENV_POP;
4633a7c4 2872 if (flags & G_DISCARD) {
3280af22 2873 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2874 retval = 0;
2875 FREETMPS;
2876 LEAVE;
2877 }
533c011a 2878 PL_op = oldop;
4633a7c4
LW
2879 return retval;
2880}
2881
954c1994
GS
2882/*
2883=for apidoc p||eval_pv
2884
422791e4 2885Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2886
2887=cut
2888*/
2889
137443ea 2890SV*
864dbfa3 2891Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2892{
137443ea
PP
2893 SV* sv = newSVpv(p, 0);
2894
7918f24d
NC
2895 PERL_ARGS_ASSERT_EVAL_PV;
2896
864dbfa3 2897 eval_sv(sv, G_SCALAR);
137443ea
PP
2898 SvREFCNT_dec(sv);
2899
ed1786ad
DD
2900 {
2901 dSP;
2902 sv = POPs;
2903 PUTBACK;
2904 }
137443ea 2905
eed484f9
DD
2906 /* just check empty string or undef? */
2907 if (croak_on_error) {
2908 SV * const errsv = ERRSV;
2909 if(SvTRUE_NN(errsv))
2910 /* replace with croak_sv? */
2911 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2912 }
137443ea
PP
2913
2914 return sv;
2915}
2916
4633a7c4
LW
2917/* Require a module. */
2918
954c1994 2919/*
ccfc67b7
JH
2920=head1 Embedding Functions
2921
954c1994
GS
2922=for apidoc p||require_pv
2923
7d3fb230
BS
2924Tells Perl to C<require> the file named by the string argument. It is
2925analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2926implemented that way; consider using load_module instead.
954c1994 2927
7d3fb230 2928=cut */
954c1994 2929
4633a7c4 2930void
864dbfa3 2931Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2932{
d3acc0f7 2933 dSP;
97aff369 2934 SV* sv;
7918f24d
NC
2935
2936 PERL_ARGS_ASSERT_REQUIRE_PV;
2937
e788e7d3 2938 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2939 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2940 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2941 POPSTACK;
79072805
LW
2942}
2943
76e3520e 2944STATIC void
b6f82619 2945S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2946{
ab821d7f 2947 /* This message really ought to be max 23 lines.
75c72d73 2948 * Removed -h because the user already knows that option. Others? */
fb73857a 2949
1566c39d
NC
2950 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2951 minimum of 509 character string literals. */
27da23d5 2952 static const char * const usage_msg[] = {
1566c39d
NC
2953" -0[octal] specify record separator (\\0, if no argument)\n"
2954" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2955" -C[number/list] enables the listed Unicode features\n"
2956" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2957" -d[:debugger] run program under debugger\n"
2958" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2959" -e program one line of program (several -e's allowed, omit programfile)\n"
2960" -E program like -e, but enables all optional features\n"
2961" -f don't do $sitelib/sitecustomize.pl at startup\n"
2962" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2963" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2964" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2965" -l[octal] enable line ending processing, specifies line terminator\n"
2966" -[mM][-]module execute \"use/no module...\" before executing program\n"
2967" -n assume \"while (<>) { ... }\" loop around program\n"
2968" -p assume loop like -n but print line also, like sed\n"
2969" -s enable rudimentary parsing for switches after programfile\n"
2970" -S look for programfile using PATH environment variable\n",
2971" -t enable tainting warnings\n"
2972" -T enable tainting checks\n"
2973" -u dump core after parsing program\n"
2974" -U allow unsafe operations\n"
2975" -v print version, patchlevel and license\n"
2976" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2977" -w enable many useful warnings\n"
1566c39d
NC
2978" -W enable all warnings\n"
2979" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2980" -X disable all warnings\n"
2981" \n"
2982"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2983NULL
2984};
27da23d5 2985 const char * const *p = usage_msg;
1566c39d 2986 PerlIO *out = PerlIO_stdout();
fb73857a 2987
1566c39d
NC
2988 PerlIO_printf(out,
2989 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2990 PL_origargv[0]);
fb73857a 2991 while (*p)
1566c39d 2992 PerlIO_puts(out, *p++);
b6f82619 2993 my_exit(0);
4633a7c4
LW
2994}
2995
b4ab917c
DM
2996/* convert a string of -D options (or digits) into an int.
2997 * sets *s to point to the char after the options */
2998
2999#ifdef DEBUGGING
3000int
e1ec3a88 3001Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3002{
27da23d5 3003 static const char * const usage_msgd[] = {
651b8f1a
NC
3004 " Debugging flag values: (see also -d)\n"
3005 " p Tokenizing and parsing (with v, displays parse stack)\n"
3006 " s Stack snapshots (with v, displays all stacks)\n"
3007 " l Context (loop) stack processing\n"
3008 " t Trace execution\n"
3009 " o Method and overloading resolution\n",
3010 " c String/numeric conversions\n"
3011 " P Print profiling info, source file input state\n"
3012 " m Memory and SV allocation\n"
3013 " f Format processing\n"
3014 " r Regular expression parsing and execution\n"
3015 " x Syntax tree dump\n",
3016 " u Tainting checks\n"
3017 " H Hash dump -- usurps values()\n"
3018 " X Scratchpad allocation\n"
3019 " D Cleaning up\n"
56967202 3020 " S Op slab allocation\n"
651b8f1a
NC
3021 " T Tokenising\n"
3022 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3023 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3024 " v Verbose: use in conjunction with other flags\n"
3025 " C Copy On Write\n"
3026 " A Consistency checks on internal structures\n"
3027 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3028 " M trace smart match resolution\n"
3029 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3030 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3031 NULL
3032 };
b4ab917c 3033 int i = 0;
7918f24d
NC
3034
3035 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3036
b4ab917c
DM
3037 if (isALPHA(**s)) {
3038 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3039 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3040
0eb30aeb 3041 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3042 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3043 if (d)
3044 i |= 1 << (d - debopts);
3045 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3046 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3047 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3048 }
3049 }
e6e64d9b 3050 else if (isDIGIT(**s)) {
96e440d2
JH
3051 const char* e;
3052 i = grok_atou(*s, &e);
3053 if (e)
3054 *s = e;
0eb30aeb 3055 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3056 }
ddcf8bc1 3057 else if (givehelp) {
06e869a4 3058 const char *const *p = usage_msgd;
651b8f1a 3059 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3060 }
b4ab917c
DM
3061# ifdef EBCDIC
3062 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3063 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3064 "-Dp not implemented on this platform\n");
3065# endif
3066 return i;
3067}
3068#endif
3069
79072805
LW
3070/* This routine handles any switches that can be given during run */
3071
c7030b81
NC
3072const char *
3073Perl_moreswitches(pTHX_ const char *s)
79072805 3074{
27da23d5 3075 dVAR;
84c133a0 3076 UV rschar;
0544e6df 3077 const char option = *s; /* used to remember option in -m/-M code */
79072805 3078
7918f24d
NC
3079 PERL_ARGS_ASSERT_MORESWITCHES;
3080
79072805
LW
3081 switch (*s) {
3082 case '0':
a863c7d1 3083 {
f2095865 3084 I32 flags = 0;
a3b680e6 3085 STRLEN numlen;
f2095865
JH
3086
3087 SvREFCNT_dec(PL_rs);
3088 if (s[1] == 'x' && s[2]) {
a3b680e6 3089 const char *e = s+=2;
f2095865
JH
3090 U8 *tmps;
3091
a3b680e6
AL
3092 while (*e)
3093 e++;
f2095865
JH
3094 numlen = e - s;
3095 flags = PERL_SCAN_SILENT_ILLDIGIT;
3096 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3097 if (s + numlen < e) {
3098 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3099 numlen = 0;
3100 s--;
3101 }
396482e1 3102 PL_rs = newSVpvs("");
c5661c80 3103 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3104 tmps = (U8*)SvPVX(PL_rs);
3105 uvchr_to_utf8(tmps, rschar);
3106 SvCUR_set(PL_rs, UNISKIP(rschar));
3107 SvUTF8_on(PL_rs);
3108 }
3109 else {
3110 numlen = 4;
3111 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3112 if (rschar & ~((U8)~0))
3113 PL_rs = &PL_sv_undef;
3114 else if (!rschar && numlen >= 2)
396482e1 3115 PL_rs = newSVpvs("");
f2095865
JH
3116 else {
3117 char ch = (char)rschar;
3118 PL_rs = newSVpvn(&ch, 1);
3119 }
3120 }
64ace3f8 3121 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3122 return s + numlen;
a863c7d1 3123 }
46487f74 3124 case 'C':
a05d7ebb 3125 s++;
dd374669 3126 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3127 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3128 PL_utf8cache = -1;
46487f74 3129 return s;
2304df62 3130 case 'F':
5fc691f1 3131 PL_minus_a = TRUE;
3280af22 3132 PL_minus_F = TRUE;
24ffa309 3133 PL_minus_n = TRUE;
ebce5377
RGS
3134 PL_splitstr = ++s;
3135 while (*s && !isSPACE(*s)) ++s;
e49e380e 3136 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3137 return s;
79072805 3138 case 'a':
3280af22 3139 PL_minus_a = TRUE;
24ffa309 3140 PL_minus_n = TRUE;
79072805
LW
3141 s++;
3142 return s;
3143 case 'c':
3280af22 3144 PL_minus_c = TRUE;
79072805
LW
3145 s++;
3146 return s;
3147 case 'd':
f20b2998 3148 forbid_setid('d', FALSE);
4633a7c4 3149 s++;
2cbb2ee1
RGS
3150
3151 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3152 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3153 ++s;
3154 my_setenv("PERL5DB_THREADED", "1");
3155 }
3156
70c94a19
RR
3157 /* The following permits -d:Mod to accepts arguments following an =
3158 in the fashion that -MSome::Mod does. */
3159 if (*s == ':' || *s == '=') {
b19934fb
NC
3160 const char *start;
3161 const char *end;
3162 SV *sv;
3163
3164 if (*++s == '-') {
3165 ++s;
3166 sv = newSVpvs("no Devel::");
3167 } else {
3168 sv = newSVpvs("use Devel::");
3169 }
3170
3171 start = s;
3172 end = s + strlen(s);
f85893a1 3173
b19934fb 3174 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3175 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3176 if (*s != '=')
f85893a1 3177 sv_catpvn(sv, start, end - start);
70c94a19
RR
3178 else {
3179 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3180 /* Don't use NUL as q// delimiter here, this string goes in the
3181 * environment. */
3182 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3183 }
f85893a1 3184 s = end;
184f32ec 3185 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3186 SvREFCNT_dec(sv);
4633a7c4 3187 }
ed094faf 3188 if (!PL_perldb) {
3280af22 3189 PL_perldb = PERLDB_ALL;
a0d0e21e 3190 init_debugger();
ed094faf 3191 }
79072805
LW
3192 return s;
3193 case 'D':
0453d815 3194 {
79072805 3195#ifdef DEBUGGING
f20b2998 3196 forbid_setid('D', FALSE);
b4ab917c 3197 s++;
dd374669 3198 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3199#else /* !DEBUGGING */
0453d815 3200 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3201 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3202 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3203 for (s++; isWORDCHAR(*s); s++) ;
79072805 3204#endif
79072805 3205 return s;
0453d815 3206 }
4633a7c4 3207 case 'h':
b6f82619 3208 usage();
79072805 3209 case 'i':
43c5f42d 3210 Safefree(PL_inplace);
c030f24b
GH
3211#if defined(__CYGWIN__) /* do backup extension automagically */
3212 if (*(s+1) == '\0') {
c86a4f2e 3213 PL_inplace = savepvs(".bak");
c030f24b
GH
3214 return s+1;
3215 }
3216#endif /* __CYGWIN__ */
5ef5d758 3217 {
d4c19fe8 3218 const char * const start = ++s;
5ef5d758
NC
3219 while (*s && !isSPACE(*s))
3220 ++s;
3221
3222 PL_inplace = savepvn(start, s - start);
3223 }
7b8d334a 3224 if (*s) {
5ef5d758 3225 ++s;
7b8d334a 3226 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3227 s++;
7b8d334a 3228 }
fb73857a 3229 return s;
4e49a025 3230 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3231 forbid_setid('I', FALSE);
fb73857a
PP
3232 ++s;
3233 while (*s && isSPACE(*s))
3234 ++s;
3235 if (*s) {
c7030b81 3236 const char *e, *p;
0df16ed7
GS
3237 p = s;
3238 /* ignore trailing spaces (possibly followed by other switches) */
3239 do {
3240 for (e = p; *e && !isSPACE(*e); e++) ;
3241 p = e;
3242 while (isSPACE(*p))
3243 p++;
3244 } while (*p && *p != '-');
55b4bc1c 3245 incpush(s, e-s,
e28f3139 3246 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3247 s = p;
3248 if (*s == '-')
3249 s++;
79072805
LW
3250 }
3251 else
a67e862a 3252 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3253 return s;
79072805 3254 case 'l':
3280af22 3255 PL_minus_l = TRUE;
79072805 3256 s++;
7889fe52
NIS
3257 if (PL_ors_sv) {
3258 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3259 PL_ors_sv = NULL;
7889fe52 3260 }
79072805 3261 if (isDIGIT(*s)) {
53305cf1 3262 I32 flags = 0;
a3b680e6 3263 STRLEN numlen;
396482e1 3264 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3265 numlen = 3 + (*s == '0');
3266 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3267 s += numlen;
3268 }
3269 else {
8bfdd7d9 3270 if (RsPARA(PL_rs)) {
396482e1 3271 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3272 }
3273 else {
8bfdd7d9 3274 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3275 }
79072805
LW
3276 }
3277 return s;
1a30305b 3278 case 'M':
f20b2998 3279 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3280 /* FALLTHROUGH */
1a30305b 3281 case 'm':
f20b2998 3282 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3283 if (*++s) {
c7030b81 3284 const char *start;
b64cb68c 3285 const char *end;
11343788 3286 SV *sv;
e1ec3a88 3287 const char *use = "use ";
0544e6df 3288 bool colon = FALSE;
a5f75d66 3289 /* -M-foo == 'no foo' */
d0043bd1
NC
3290 /* Leading space on " no " is deliberate, to make both
3291 possibilities the same length. */
3292 if (*s == '-') { use = " no "; ++s; }
3293 sv = newSVpvn(use,4);
a5f75d66 3294 start = s;
1a30305b 3295 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3296 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3297 if( *s++ == ':' ) {
3298 if( *s == ':' )
3299 s++;
3300 else
3301 colon = TRUE;
3302 }
3303 }
3304 if (s == start)
3305 Perl_croak(aTHX_ "Module name required with -%c option",
3306 option);
3307 if (colon)
3308 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3309 "contains single ':'",
63da6837 3310 (int)(s - start), start, option);
b64cb68c 3311 end = s + strlen(s);
c07a80fd 3312 if (*s != '=') {
b64cb68c 3313 sv_catpvn(sv, start, end - start);
0544e6df 3314 if (option == 'm') {
c07a80fd 3315 if (*s != '\0')
cea2e8a9 3316 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3317 sv_catpvs( sv, " ()");
c07a80fd
PP
3318 }
3319 } else {
11343788 3320 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3321 /* Use NUL as q''-delimiter. */
3322 sv_catpvs(sv, " split(/,/,q\0");
3323 ++s;
3324 sv_catpvn(sv, s, end - s);
396482e1 3325 sv_catpvs(sv, "\0)");
c07a80fd 3326 }
b64cb68c 3327 s = end;
29a861e7 3328 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3329 }
3330 else
0544e6df 3331 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3332 return s;
79072805 3333 case 'n':
3280af22 3334 PL_minus_n = TRUE;
79072805
LW
3335 s++;
3336 return s;
3337 case 'p':
3280af22 3338 PL_minus_p = TRUE;
79072805
LW
3339 s++;
3340 return s;
3341 case 's':
f20b2998 3342 forbid_setid('s', FALSE);
3280af22 3343 PL_doswitches = TRUE;
79072805
LW
3344 s++;
3345 return s;
6537fe72 3346 case 't':
27a6968b 3347 case 'T':
dc6d7f5c 3348#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3349 /* silently ignore */
dc6d7f5c 3350#elif defined(NO_TAINT_SUPPORT)
3231f579 3351 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3352 "Cowardly refusing to run with -t or -T flags");
3353#else
3354 if (!TAINTING_get)
27a6968b 3355 TOO_LATE_FOR(*s);
284167a5 3356#endif
6537fe72 3357 s++;
463ee0b2 3358 return s;
79072805 3359 case 'u':
3280af22 3360 PL_do_undump = TRUE;
79072805
LW
3361 s++;
3362 return s;
3363 case 'U':
3280af22 3364 PL_unsafe = TRUE;
79072805
LW
3365 s++;
3366 return s;
3367 case 'v':
c4bc78d9
NC
3368 minus_v();
3369 case 'w':
3370 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3371 PL_dowarn |= G_WARN_ON;
3372 }
3373 s++;
3374 return s;
3375 case 'W':
3376 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3377 if (!specialWARN(PL_compiling.cop_warnings))
3378 PerlMemShared_free(PL_compiling.cop_warnings);
3379 PL_compiling.cop_warnings = pWARN_ALL ;
3380 s++;
3381 return s;
3382 case 'X':
3383 PL_dowarn = G_WARN_ALL_OFF;
3384 if (!specialWARN(PL_compiling.cop_warnings))
3385 PerlMemShared_free(PL_compiling.cop_warnings);
3386 PL_compiling.cop_warnings = pWARN_NONE ;
3387 s++;
3388 return s;
3389 case '*':
3390 case ' ':
3391 while( *s == ' ' )
3392 ++s;
3393 if (s[0] == '-') /* Additional switches on #! line. */
3394 return s+1;
3395 break;
3396 case '-':
3397 case 0:
3398#if defined(WIN32) || !defined(PERL_STRICT_CR)
3399 case '\r':
3400#endif
3401 case '\n':
3402 case '\t':
3403 break;
3404#ifdef ALTERNATE_SHEBANG
3405 case 'S': /* OS/2 needs -S on "extproc" line. */
3406 break;
3407#endif
4bb78d63
CB
3408 case 'e': case 'f': case 'x': case 'E':
3409#ifndef ALTERNATE_SHEBANG
3410 case 'S':
3411#endif
3412 case 'V':
c4bc78d9 3413 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3414 default:
3415 Perl_croak(aTHX_
3416 "Unrecognized switch: -%.1s (-h will show valid options)",s
3417 );
c4bc78d9
NC
3418 }
3419 return NULL;
3420}
3421
3422
3423STATIC void
3424S_minus_v(pTHX)
3425{
fc3381af 3426 PerlIO * PIO_stdout;
46807d8e 3427 {
709aee94
DD
3428 const char * const level_str = "v" PERL_VERSION_STRING;
3429 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3430#ifdef PERL_PATCHNUM
709aee94 3431 SV* level;
23d483e2 3432# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3433 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3434# else
709aee94 3435 static const char num [] = PERL_PATCHNUM;
23d483e2 3436# endif
fc3381af 3437 {
709aee94
DD
3438 const STRLEN num_len = sizeof(num)-1;
3439 /* A very advanced compiler would fold away the strnEQ
3440 and this whole conditional, but most (all?) won't do it.
3441 SV level could also be replaced by with preprocessor
3442 catenation.
3443 */
3444 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3445 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3446 of the interp so it might contain format characters
3447 */
3448 level = newSVpvn(num, num_len);
fc3381af 3449 } else {
709aee94 3450 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3451 }
46807d8e 3452 }
709aee94
DD
3453#else
3454 SV* level = newSVpvn(level_str, level_len);
3455#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3456 PIO_stdout = PerlIO_stdout();
3457 PerlIO_printf(PIO_stdout,
ded326e4
DG
3458 "\nThis is perl " STRINGIFY(PERL_REVISION)
3459 ", version " STRINGIFY(PERL_VERSION)
3460 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3461 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3462 );
709aee94 3463 SvREFCNT_dec_NN(level);
46807d8e 3464 }
fb73857a
PP
3465#if defined(LOCAL_PATCH_COUNT)
3466 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3467 PerlIO_printf(PIO_stdout,
b0e47665
GS
3468 "\n(with %d registered patch%s, "
3469 "see perl -V for more detail)",
bb7a0f54 3470 LOCAL_PATCH_COUNT,
b0e47665 3471 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3472#endif
1a30305b 3473
fc3381af 3474 PerlIO_printf(PIO_stdout,
fb435042 3475 "\n\nCopyright 1987-2014, Larry Wall\n");
79072805 3476#ifdef MSDOS
fc3381af 3477 PerlIO_printf(PIO_stdout,
b0e47665 3478 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3479#endif
3480#ifdef DJGPP
fc3381af 3481 PerlIO_printf(PIO_stdout,
b0e47665
GS
3482 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3483 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3484#endif
79072805 3485#ifdef OS2
fc3381af