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Merge branch 'test-simple-old' into blead
[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"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2aa47728 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
42# ifdef I_SYSUIO
43# include <sys/uio.h>
44# endif
45
46union control_un {
47 struct cmsghdr cm;
48 char control[CMSG_SPACE(sizeof(int))];
49};
50
2aa47728
NC
51#endif
52
5311654c
JH
53#ifndef HZ
54# ifdef CLK_TCK
55# define HZ CLK_TCK
56# else
57# define HZ 60
58# endif
59#endif
60
7114a2d2 61#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 62char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL
73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC
87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC
90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
71ad1b0c 95 HINTS_REFCNT_INIT;
e6827a76 96 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
97 MUTEX_INIT(&PL_my_ctx_mutex);
98# endif
e6827a76 99 }
c0bce9aa
NC
100#if defined(USE_ITHREADS)
101 else
102#else
103 /* This always happens for non-ithreads */
104#endif
105 {
e6827a76
NC
106 PERL_SET_THX(my_perl);
107 }
108}
06d86050 109
cbec8ebe
DM
110
111/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
112
113void
114Perl_sys_init(int* argc, char*** argv)
115{
4fc0badb 116 dVAR;
7918f24d
NC
117
118 PERL_ARGS_ASSERT_SYS_INIT;
119
cbec8ebe
DM
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
123}
124
125void
126Perl_sys_init3(int* argc, char*** argv, char*** env)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT3;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
136}
137
138void
88772978 139Perl_sys_term(void)
cbec8ebe 140{
4fc0badb 141 dVAR;
bf81751b
DM
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
144 }
cbec8ebe
DM
145}
146
147
32e30700
GS
148#ifdef PERL_IMPLICIT_SYS
149PerlInterpreter *
7766f137
GS
150perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
155{
156 PerlInterpreter *my_perl;
7918f24d
NC
157
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
159
9f653bb5 160 /* Newx() needs interpreter, so call malloc() instead */
32e30700 161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 162 S_init_tls_and_interp(my_perl);
32e30700
GS
163 Zero(my_perl, 1, PerlInterpreter);
164 PL_Mem = ipM;
7766f137
GS
165 PL_MemShared = ipMS;
166 PL_MemParse = ipMP;
32e30700
GS
167 PL_Env = ipE;
168 PL_StdIO = ipStd;
169 PL_LIO = ipLIO;
170 PL_Dir = ipD;
171 PL_Sock = ipS;
172 PL_Proc = ipP;
7cb608b5 173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 174
32e30700
GS
175 return my_perl;
176}
177#else
954c1994
GS
178
179/*
ccfc67b7
JH
180=head1 Embedding Functions
181
954c1994
GS
182=for apidoc perl_alloc
183
184Allocates a new Perl interpreter. See L<perlembed>.
185
186=cut
187*/
188
93a17b20 189PerlInterpreter *
cea2e8a9 190perl_alloc(void)
79072805 191{
cea2e8a9 192 PerlInterpreter *my_perl;
79072805 193
9f653bb5 194 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 196
e6827a76 197 S_init_tls_and_interp(my_perl);
7cb608b5 198#ifndef PERL_TRACK_MEMPOOL
07409e01 199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
200#else
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
203 return my_perl;
204#endif
79072805 205}
32e30700 206#endif /* PERL_IMPLICIT_SYS */
79072805 207
954c1994
GS
208/*
209=for apidoc perl_construct
210
211Initializes a new Perl interpreter. See L<perlembed>.
212
213=cut
214*/
215
79072805 216void
0cb96387 217perl_construct(pTHXx)
79072805 218{
27da23d5 219 dVAR;
7918f24d
NC
220
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
222
8990e307 223#ifdef MULTIPLICITY
54aff467 224 init_interp();
ac27b0f5 225 PL_perl_destruct_level = 1;
54aff467 226#else
7918f24d 227 PERL_UNUSED_ARG(my_perl);
54aff467
GS
228 if (PL_perl_destruct_level > 0)
229 init_interp();
230#endif
34caed6d
DM
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
75d476e2
SM
233#ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
235#endif
236
0d96b528 237 init_constants();
34caed6d
DM
238
239 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
241
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 243#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 244 PL_pidstatus = newHV();
ca0c25f6 245#endif
79072805 246
396482e1 247 PL_rs = newSVpvs("\n");
dc92893f 248
cea2e8a9 249 init_stacks();
79072805 250
748a9306 251 init_ids();
a5f75d66 252
312caa8e 253 JMPENV_BOOTSTRAP;
f86702cc
PP
254 STATUS_ALL_SUCCESS;
255
0672f40e 256 init_i18nl10n(1);
0b5b802d 257
ab821d7f 258#if defined(LOCAL_PATCH_COUNT)
3280af22 259 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
260#endif
261
52853b95
GS
262#ifdef HAVE_INTERP_INTERN
263 sys_intern_init();
264#endif
265
3a1ee7e8 266 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 267
3280af22
NIS
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 270 PL_errors = newSVpvs("");
76f68e9b
MHM
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 274#ifdef USE_ITHREADS
402d2eb1
NC
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 278 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 280#endif
e5dd39fc 281#ifdef USE_REENTRANT_API
59bd0823 282 Perl_reentrant_init(aTHX);
e5dd39fc 283#endif
7dc86639
YO
284#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
290 *
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
295 }
296#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
297
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
301 PL_strtab = newHV();
302
3d47000e
AB
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
305
a38ab475
RZ
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
307
2f42fcb0
JH
308#ifndef PERL_MICRO
309# ifdef USE_ENVIRON_ARRAY
0631ea03 310 PL_origenviron = environ;
2f42fcb0 311# endif
0631ea03
AB
312#endif
313
5311654c 314 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 315 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
b6c36746 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB
324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 327
27da23d5
JH
328#ifdef HAS_MMAP
329 if (!PL_mmap_page_size) {
330#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
331 {
332 SETERRNO(0, SS_NORMAL);
333# ifdef _SC_PAGESIZE
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
335# else
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
337# endif
338 if ((long) PL_mmap_page_size < 0) {
339 if (errno) {
44f8325f 340 SV * const error = ERRSV;
d4c19fe8 341 SvUPGRADE(error, SVt_PV);
0510663f 342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
343 }
344 else
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
346 }
347 }
348#else
349# ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
351# else
352# if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
354# endif
355# endif
356#endif
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
360 }
361#endif /* HAS_MMAP */
362
363#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
368#endif
369
7d113631
NC
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
371
a3e6e81e 372 PL_registered_mros = newHV();
9e169432
NC
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
a3e6e81e 375
7b8dd5f4
KW
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
64935bc6 392 PL_GCB_invlist = _new_invlist_C_array(Grapheme_Cluster_Break_invlist);
06ae2722 393 PL_SB_invlist = _new_invlist_C_array(Sentence_Break_invlist);
ae3bb8ea 394 PL_WB_invlist = _new_invlist_C_array(Word_Break_invlist);
7b8dd5f4 395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC
441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC
449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
462 abort();
463 }
bf357333
NC
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
466 abort();
467 }
468
808ad2d0
NC
469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC
480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
491
808ad2d0
NC
492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC
511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS
516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG
539 assert(PL_scopestack_ix == 1);
540
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH
549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
22ff3130
HS
553 UV uv;
554 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
555 i = (int)uv;
556 else
557 i = 0;
96e440d2 558 }
36e77d41
DD
559#ifdef DEBUGGING
560 if (destruct_level < i) destruct_level = i;
561#endif
562#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
563 /* RT #114496, for perl_free */
564 PL_perl_destruct_level = i;
36e77d41 565#endif
5f05dabc 566 }
4633a7c4
LW
567 }
568#endif
569
27da23d5 570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
571 dJMPENV;
572 int x = 0;
573
574 JMPENV_PUSH(x);
1b6737cc 575 PERL_UNUSED_VAR(x);
9ebf26ad 576 if (PL_endav && !PL_minus_c) {
ca7b837b 577 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 578 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 579 }
f3faeb53 580 JMPENV_POP;
26f423df 581 }
f3faeb53 582 LEAVE;
a0d0e21e 583 FREETMPS;
3d22c4f0 584 assert(PL_scopestack_ix == 0);
a0d0e21e 585
e00b64d4 586 /* Need to flush since END blocks can produce output */
f13a2bc0 587 my_fflush_all();
e00b64d4 588
75d476e2
SM
589#ifdef PERL_TRACE_OPS
590 /* If we traced all Perl OP usage, report and clean up */
591 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
592 for (i = 0; i <= OP_max; ++i) {
593 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
594 PL_op_exec_cnt[i] = 0;
595 }
596 /* Utility slot for easily doing little tracing experiments in the runloop: */
597 if (PL_op_exec_cnt[OP_max+1] != 0)
598 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
599 PerlIO_printf(Perl_debug_log, "\n");
600#endif
601
602
16c91539 603 if (PL_threadhook(aTHX)) {
62375a60 604 /* Threads hook has vetoed further cleanup */
c301d606 605 PL_veto_cleanup = TRUE;
37038d91 606 return STATUS_EXIT;
62375a60
NIS
607 }
608
2aa47728
NC
609#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
610 if (destruct_level != 0) {
611 /* Fork here to create a child. Our child's job is to preserve the
612 state of scalars prior to destruction, so that we can instruct it
613 to dump any scalars that we later find have leaked.
614 There's no subtlety in this code - it assumes POSIX, and it doesn't
615 fail gracefully */
616 int fd[2];
617
618 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
619 perror("Debug leaking scalars socketpair failed");
620 abort();
621 }
622
623 child = fork();
624 if(child == -1) {
625 perror("Debug leaking scalars fork failed");
626 abort();
627 }
628 if (!child) {
629 /* We are the child */
3125a5a4
NC
630 const int sock = fd[1];
631 const int debug_fd = PerlIO_fileno(Perl_debug_log);
632 int f;
808ad2d0
NC
633 const char *where;
634 /* Our success message is an integer 0, and a char 0 */
b61433a9 635 static const char success[sizeof(int) + 1] = {0};
3125a5a4 636
2aa47728 637 close(fd[0]);
2aa47728 638
3125a5a4
NC
639 /* We need to close all other file descriptors otherwise we end up
640 with interesting hangs, where the parent closes its end of a
641 pipe, and sits waiting for (another) child to terminate. Only
642 that child never terminates, because it never gets EOF, because
bf357333
NC
643 we also have the far end of the pipe open. We even need to
644 close the debugging fd, because sometimes it happens to be one
645 end of a pipe, and a process is waiting on the other end for
646 EOF. Normally it would be closed at some point earlier in
647 destruction, but if we happen to cause the pipe to remain open,
648 EOF never occurs, and we get an infinite hang. Hence all the
649 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
650
651 f = sysconf(_SC_OPEN_MAX);
652 if(f < 0) {
808ad2d0
NC
653 where = "sysconf failed";
654 goto abort;
3125a5a4
NC
655 }
656 while (f--) {
657 if (f == sock)
658 continue;
3125a5a4
NC
659 close(f);
660 }
661
2aa47728
NC
662 while (1) {
663 SV *target;
bf357333
NC
664 union control_un control;
665 struct msghdr msg;
666 struct iovec vec[1];
667 struct cmsghdr *cmptr;
668 ssize_t got;
669 int got_fd;
670
671 msg.msg_control = control.control;
672 msg.msg_controllen = sizeof(control.control);
673 /* We're a connected socket so we don't need a source */
674 msg.msg_name = NULL;
675 msg.msg_namelen = 0;
676 msg.msg_iov = vec;
c3caa5c3 677 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
678
679 vec[0].iov_base = (void*)&target;
680 vec[0].iov_len = sizeof(target);
681
682 got = recvmsg(sock, &msg, 0);
2aa47728
NC
683
684 if(got == 0)
685 break;
686 if(got < 0) {
808ad2d0
NC
687 where = "recv failed";
688 goto abort;
2aa47728
NC
689 }
690 if(got < sizeof(target)) {
808ad2d0
NC
691 where = "short recv";
692 goto abort;
2aa47728 693 }
bf357333 694
808ad2d0
NC
695 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
696 where = "no cmsg";
697 goto abort;
698 }
699 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
700 where = "wrong cmsg_len";
701 goto abort;
702 }
703 if(cmptr->cmsg_level != SOL_SOCKET) {
704 where = "wrong cmsg_level";
705 goto abort;
706 }
707 if(cmptr->cmsg_type != SCM_RIGHTS) {
708 where = "wrong cmsg_type";
709 goto abort;
710 }
bf357333
NC
711
712 got_fd = *(int*)CMSG_DATA(cmptr);
713 /* For our last little bit of trickery, put the file descriptor
714 back into Perl_debug_log, as if we never actually closed it
715 */
808ad2d0
NC
716 if(got_fd != debug_fd) {
717 if (dup2(got_fd, debug_fd) == -1) {
718 where = "dup2";
719 goto abort;
720 }
721 }
2aa47728 722 sv_dump(target);
bf357333 723
2aa47728
NC
724 PerlIO_flush(Perl_debug_log);
725
808ad2d0 726 got = write(sock, &success, sizeof(success));
2aa47728
NC
727
728 if(got < 0) {
808ad2d0
NC
729 where = "write failed";
730 goto abort;
2aa47728 731 }
808ad2d0
NC
732 if(got < sizeof(success)) {
733 where = "short write";
734 goto abort;
2aa47728
NC
735 }
736 }
737 _exit(0);
808ad2d0
NC
738 abort:
739 {
740 int send_errno = errno;
741 unsigned char length = (unsigned char) strlen(where);
742 struct iovec failure[3] = {
743 {(void*)&send_errno, sizeof(send_errno)},
744 {&length, 1},
745 {(void*)where, length}
746 };
747 int got = writev(sock, failure, 3);
748 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
749 in the parent if we try to read from the socketpair after the
750 child has exited, even if there was data to read.
751 So sleep a bit to give the parent a fighting chance of
752 reading the data. */
753 sleep(2);
754 _exit((got == -1) ? errno : 0);
755 }
bf357333 756 /* End of child. */
2aa47728 757 }
41e4abd8 758 PL_dumper_fd = fd[0];
2aa47728
NC
759 close(fd[1]);
760 }
761#endif
762
ff0cee69
PP
763 /* We must account for everything. */
764
765 /* Destroy the main CV and syntax tree */
37e77c23
FC
766 /* Set PL_curcop now, because destroying ops can cause new SVs
767 to be generated in Perl_pad_swipe, and when running with
768 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
769 op from which the filename structure member is copied. */
17fbfdf6 770 PL_curcop = &PL_compiling;
3280af22 771 if (PL_main_root) {
4e380990
DM
772 /* ensure comppad/curpad to refer to main's pad */
773 if (CvPADLIST(PL_main_cv)) {
774 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 775 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 776 }
3280af22 777 op_free(PL_main_root);
5f66b61c 778 PL_main_root = NULL;
a0d0e21e 779 }
5f66b61c 780 PL_main_start = NULL;
aac9d523
DM
781 /* note that PL_main_cv isn't usually actually freed at this point,
782 * due to the CvOUTSIDE refs from subs compiled within it. It will
783 * get freed once all the subs are freed in sv_clean_all(), for
784 * destruct_level > 0 */
3280af22 785 SvREFCNT_dec(PL_main_cv);
601f1833 786 PL_main_cv = NULL;
ca7b837b 787 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 788
13621cfb
NIS
789 /* Tell PerlIO we are about to tear things apart in case
790 we have layers which are using resources that should
791 be cleaned up now.
792 */
793
794 PerlIO_destruct(aTHX);
795
ddf23d4a
SM
796 /*
797 * Try to destruct global references. We do this first so that the
798 * destructors and destructees still exist. Some sv's might remain.
799 * Non-referenced objects are on their own.
800 */
801 sv_clean_objs();
8990e307 802
5cd24f17 803 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 804 SvREFCNT_dec(PL_warnhook);
a0714e2c 805 PL_warnhook = NULL;
3280af22 806 SvREFCNT_dec(PL_diehook);
a0714e2c 807 PL_diehook = NULL;
5cd24f17 808
4b556e6c 809 /* call exit list functions */
3280af22 810 while (PL_exitlistlen-- > 0)
acfe0abc 811 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 812
3280af22 813 Safefree(PL_exitlist);
4b556e6c 814
1c4916e5
CB
815 PL_exitlist = NULL;
816 PL_exitlistlen = 0;
817
a3e6e81e
NC
818 SvREFCNT_dec(PL_registered_mros);
819
551a8b83 820 /* jettison our possibly duplicated environment */
4b647fb0
DM
821 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
822 * so we certainly shouldn't free it here
823 */
2f42fcb0 824#ifndef PERL_MICRO
4b647fb0 825#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 826 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
827#ifdef USE_ITHREADS
828 /* only main thread can free environ[0] contents */
829 && PL_curinterp == aTHX
830#endif
831 )
832 {
551a8b83
JH
833 I32 i;
834
835 for (i = 0; environ[i]; i++)
4b420006 836 safesysfree(environ[i]);
0631ea03 837
4b420006
JH
838 /* Must use safesysfree() when working with environ. */
839 safesysfree(environ);
551a8b83
JH
840
841 environ = PL_origenviron;
842 }
843#endif
2f42fcb0 844#endif /* !PERL_MICRO */
551a8b83 845
30985c42
JH
846 if (destruct_level == 0) {
847
848 DEBUG_P(debprofdump());
849
850#if defined(PERLIO_LAYERS)
851 /* No more IO - including error messages ! */
852 PerlIO_cleanup(aTHX);
853#endif
854
855 CopFILE_free(&PL_compiling);
30985c42
JH
856
857 /* The exit() function will do everything that needs doing. */
858 return STATUS_EXIT;
859 }
860
9fa9f06b
KW
861 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
862
5f8cb046
DM
863#ifdef USE_ITHREADS
864 /* the syntax tree is shared between clones
865 * so op_free(PL_main_root) only ReREFCNT_dec's
866 * REGEXPs in the parent interpreter
867 * we need to manually ReREFCNT_dec for the clones
868 */
0547a729
DM
869 {
870 I32 i = AvFILLp(PL_regex_padav);
871 SV **ary = AvARRAY(PL_regex_padav);
872
873 for (; i; i--) {
874 SvREFCNT_dec(ary[i]);
875 ary[i] = &PL_sv_undef;
876 }
877 }
5f8cb046
DM
878#endif
879
0547a729 880
ad64d0ec 881 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
882 PL_stashcache = NULL;
883
5f05dabc
PP
884 /* loosen bonds of global variables */
885
2f9285f8
DM
886 /* XXX can PL_parser still be non-null here? */
887 if(PL_parser && PL_parser->rsfp) {
888 (void)PerlIO_close(PL_parser->rsfp);
889 PL_parser->rsfp = NULL;
8ebc5c01
PP
890 }
891
84386e14
RGS
892 if (PL_minus_F) {
893 Safefree(PL_splitstr);
894 PL_splitstr = NULL;
895 }
896
8ebc5c01 897 /* switches */
3280af22
NIS
898 PL_minus_n = FALSE;
899 PL_minus_p = FALSE;
900 PL_minus_l = FALSE;
901 PL_minus_a = FALSE;
902 PL_minus_F = FALSE;
903 PL_doswitches = FALSE;
599cee73 904 PL_dowarn = G_WARN_OFF;
1a904fc8 905#ifdef PERL_SAWAMPERSAND
d3b97530 906 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 907#endif
3280af22
NIS
908 PL_unsafe = FALSE;
909
910 Safefree(PL_inplace);
bd61b366 911 PL_inplace = NULL;
a7cb1f99 912 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
913
914 if (PL_e_script) {
915 SvREFCNT_dec(PL_e_script);
a0714e2c 916 PL_e_script = NULL;
8ebc5c01
PP
917 }
918
bf9cdc68
RG
919 PL_perldb = 0;
920
8ebc5c01
PP
921 /* magical thingies */
922
e23d9e2f
CS
923 SvREFCNT_dec(PL_ofsgv); /* *, */
924 PL_ofsgv = NULL;
5f05dabc 925
7889fe52 926 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 927 PL_ors_sv = NULL;
8ebc5c01 928
3280af22 929 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 930 PL_rs = NULL;
dc92893f 931
d33b2eba 932 Safefree(PL_osname); /* $^O */
bd61b366 933 PL_osname = NULL;
5f05dabc 934
3280af22 935 SvREFCNT_dec(PL_statname);
a0714e2c
SS
936 PL_statname = NULL;
937 PL_statgv = NULL;
5f05dabc 938
8ebc5c01
PP
939 /* defgv, aka *_ should be taken care of elsewhere */
940
7d5ea4e7
GS
941 /* float buffer */
942 Safefree(PL_efloatbuf);
bd61b366 943 PL_efloatbuf = NULL;
7d5ea4e7
GS
944 PL_efloatsize = 0;
945
8ebc5c01 946 /* startup and shutdown function lists */
3280af22 947 SvREFCNT_dec(PL_beginav);
5a837c8f 948 SvREFCNT_dec(PL_beginav_save);
3280af22 949 SvREFCNT_dec(PL_endav);
7d30b5c4 950 SvREFCNT_dec(PL_checkav);
ece599bd 951 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
952 SvREFCNT_dec(PL_unitcheckav);
953 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 954 SvREFCNT_dec(PL_initav);
7d49f689
NC
955 PL_beginav = NULL;
956 PL_beginav_save = NULL;
957 PL_endav = NULL;
958 PL_checkav = NULL;
959 PL_checkav_save = NULL;
3c10abe3
AG
960 PL_unitcheckav = NULL;
961 PL_unitcheckav_save = NULL;
7d49f689 962 PL_initav = NULL;
5618dfe8 963
8ebc5c01 964 /* shortcuts just get cleared */
a0714e2c
SS
965 PL_hintgv = NULL;
966 PL_errgv = NULL;
a0714e2c
SS
967 PL_argvoutgv = NULL;
968 PL_stdingv = NULL;
969 PL_stderrgv = NULL;
970 PL_last_in_gv = NULL;
a0714e2c
SS
971 PL_DBsingle = NULL;
972 PL_DBtrace = NULL;
973 PL_DBsignal = NULL;
a6d69523
TC
974 PL_DBsingle_iv = 0;
975 PL_DBtrace_iv = 0;
976 PL_DBsignal_iv = 0;
601f1833 977 PL_DBcv = NULL;
7d49f689 978 PL_dbargs = NULL;
5c284bb0 979 PL_debstash = NULL;
8ebc5c01 980
cf93a474 981 SvREFCNT_dec(PL_envgv);
f03015cd 982 SvREFCNT_dec(PL_incgv);
722fa0e9 983 SvREFCNT_dec(PL_argvgv);
475b1e90 984 SvREFCNT_dec(PL_replgv);
8cece913
FC
985 SvREFCNT_dec(PL_DBgv);
986 SvREFCNT_dec(PL_DBline);
987 SvREFCNT_dec(PL_DBsub);
cf93a474 988 PL_envgv = NULL;
f03015cd 989 PL_incgv = NULL;
722fa0e9 990 PL_argvgv = NULL;
475b1e90 991 PL_replgv = NULL;
8cece913
FC
992 PL_DBgv = NULL;
993 PL_DBline = NULL;
994 PL_DBsub = NULL;
995
7a1c5554 996 SvREFCNT_dec(PL_argvout_stack);
7d49f689 997 PL_argvout_stack = NULL;
8ebc5c01 998
5c831c24 999 SvREFCNT_dec(PL_modglobal);
5c284bb0 1000 PL_modglobal = NULL;
5c831c24 1001 SvREFCNT_dec(PL_preambleav);
7d49f689 1002 PL_preambleav = NULL;
5c831c24 1003 SvREFCNT_dec(PL_subname);
a0714e2c 1004 PL_subname = NULL;
ca0c25f6 1005#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1006 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1007 PL_pidstatus = NULL;
ca0c25f6 1008#endif
5c831c24 1009 SvREFCNT_dec(PL_toptarget);
a0714e2c 1010 PL_toptarget = NULL;
5c831c24 1011 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1012 PL_bodytarget = NULL;
1013 PL_formtarget = NULL;
5c831c24 1014
d33b2eba 1015 /* free locale stuff */
b9582b6a 1016#ifdef USE_LOCALE_COLLATE
d33b2eba 1017 Safefree(PL_collation_name);
bd61b366 1018 PL_collation_name = NULL;
b9582b6a 1019#endif
d33b2eba 1020
b9582b6a 1021#ifdef USE_LOCALE_NUMERIC
d33b2eba 1022 Safefree(PL_numeric_name);
bd61b366 1023 PL_numeric_name = NULL;
a453c169 1024 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1025 PL_numeric_radix_sv = NULL;
b9582b6a 1026#endif
d33b2eba 1027
9c0b6888
KW
1028 /* clear character classes */
1029 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1030 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1031 PL_utf8_swash_ptrs[i] = NULL;
1032 }
5c831c24
GS
1033 SvREFCNT_dec(PL_utf8_mark);
1034 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1035 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1036 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1037 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1038 SvREFCNT_dec(PL_utf8_idstart);
1039 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1040 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1041 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1042 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1043 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1048#ifdef USE_LOCALE_CTYPE
780fcc9f 1049 SvREFCNT_dec(PL_warn_locale);
5b7de470 1050#endif
a0714e2c
SS
1051 PL_utf8_mark = NULL;
1052 PL_utf8_toupper = NULL;
1053 PL_utf8_totitle = NULL;
1054 PL_utf8_tolower = NULL;
1055 PL_utf8_tofold = NULL;
1056 PL_utf8_idstart = NULL;
1057 PL_utf8_idcont = NULL;
2726813d 1058 PL_utf8_foldclosures = NULL;
9fa9f06b 1059 PL_AboveLatin1 = NULL;
e0a1ff7a 1060 PL_InBitmap = NULL;
9fa9f06b 1061 PL_HasMultiCharFold = NULL;
5b7de470 1062#ifdef USE_LOCALE_CTYPE
780fcc9f 1063 PL_warn_locale = NULL;
5b7de470 1064#endif
9fa9f06b
KW
1065 PL_Latin1 = NULL;
1066 PL_NonL1NonFinalFold = NULL;
1067 PL_UpperLatin1 = NULL;
86f72d56 1068 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1069 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1070 PL_XPosix_ptrs[i] = NULL;
86f72d56 1071 }
64935bc6 1072 PL_GCB_invlist = NULL;
06ae2722 1073 PL_SB_invlist = NULL;
ae3bb8ea 1074 PL_WB_invlist = NULL;
5c831c24 1075
971a9dd3 1076 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1077 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1078 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1079 cophh_free(CopHINTHASH_get(&PL_compiling));
1080 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1081 CopFILE_free(&PL_compiling);
5c831c24 1082
a0d0e21e 1083 /* Prepare to destruct main symbol table. */
5f05dabc 1084
3280af22 1085 hv = PL_defstash;
ca556bcd
DM
1086 /* break ref loop *:: <=> %:: */
1087 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1088 PL_defstash = 0;
a0d0e21e 1089 SvREFCNT_dec(hv);
5c831c24 1090 SvREFCNT_dec(PL_curstname);
a0714e2c 1091 PL_curstname = NULL;
a0d0e21e 1092
5a844595
GS
1093 /* clear queued errors */
1094 SvREFCNT_dec(PL_errors);
a0714e2c 1095 PL_errors = NULL;
5a844595 1096
dd69841b
BB
1097 SvREFCNT_dec(PL_isarev);
1098
a0d0e21e 1099 FREETMPS;
9b387841 1100 if (destruct_level >= 2) {
3280af22 1101 if (PL_scopestack_ix != 0)
9b387841
NC
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1104 (long)PL_scopestack_ix);
3280af22 1105 if (PL_savestack_ix != 0)
9b387841
NC
1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1107 "Unbalanced saves: %ld more saves than restores\n",
1108 (long)PL_savestack_ix);
3280af22 1109 if (PL_tmps_floor != -1)
9b387841
NC
1110 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1111 (long)PL_tmps_floor + 1);
a0d0e21e 1112 if (cxstack_ix != -1)
9b387841
NC
1113 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1114 (long)cxstack_ix + 1);
a0d0e21e 1115 }
8990e307 1116
0547a729
DM
1117#ifdef USE_ITHREADS
1118 SvREFCNT_dec(PL_regex_padav);
1119 PL_regex_padav = NULL;
1120 PL_regex_pad = NULL;
1121#endif
1122
776df701 1123#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1124 /* the entries in this list are allocated via SV PVX's, so get freed
1125 * in sv_clean_all */
1126 Safefree(PL_my_cxt_list);
776df701 1127#endif
57bb2458 1128
8990e307 1129 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1130
1131 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1132 while (sv_clean_all() > 2)
5226ed68
JH
1133 ;
1134
23083432
FC
1135#ifdef USE_ITHREADS
1136 Safefree(PL_stashpad); /* must come after sv_clean_all */
1137#endif
1138
d4777f27
GS
1139 AvREAL_off(PL_fdpid); /* no surviving entries */
1140 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1141 PL_fdpid = NULL;
d33b2eba 1142
6c644e78
GS
1143#ifdef HAVE_INTERP_INTERN
1144 sys_intern_clear();
1145#endif
1146
a38ab475
RZ
1147 /* constant strings */
1148 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1149 SvREFCNT_dec(PL_sv_consts[i]);
1150 PL_sv_consts[i] = NULL;
1151 }
1152
6e72f9df
PP
1153 /* Destruct the global string table. */
1154 {
1155 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1156 * so that sv_free() won't fail on them.
80459961
NC
1157 * Now that the global string table is using a single hunk of memory
1158 * for both HE and HEK, we either need to explicitly unshare it the
1159 * correct way, or actually free things here.
6e72f9df 1160 */
80459961
NC
1161 I32 riter = 0;
1162 const I32 max = HvMAX(PL_strtab);
c4420975 1163 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1164 HE *hent = array[0];
1165
6e72f9df 1166 for (;;) {
0453d815 1167 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1168 HE * const next = HeNEXT(hent);
9014280d 1169 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1170 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1171 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1172 Safefree(hent);
1173 hent = next;
6e72f9df
PP
1174 }
1175 if (!hent) {
1176 if (++riter > max)
1177 break;
1178 hent = array[riter];
1179 }
1180 }
80459961
NC
1181
1182 Safefree(array);
1183 HvARRAY(PL_strtab) = 0;
1184 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1185 }
3280af22 1186 SvREFCNT_dec(PL_strtab);
6e72f9df 1187
e652bb2f 1188#ifdef USE_ITHREADS
c21d1a0f 1189 /* free the pointer tables used for cloning */
a0739874 1190 ptr_table_free(PL_ptr_table);
bf9cdc68 1191 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1192#endif
a0739874 1193
d33b2eba
GS
1194 /* free special SVs */
1195
1196 SvREFCNT(&PL_sv_yes) = 0;
1197 sv_clear(&PL_sv_yes);
1198 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1199 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1200
1201 SvREFCNT(&PL_sv_no) = 0;
1202 sv_clear(&PL_sv_no);
1203 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1204 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1205
9f375a43
DM
1206 {
1207 int i;
1208 for (i=0; i<=2; i++) {
1209 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1210 sv_clear(PERL_DEBUG_PAD(i));
1211 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1212 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1213 }
1214 }
1215
0453d815 1216 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1217 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1218
eba0f806
DM
1219#ifdef DEBUG_LEAKING_SCALARS
1220 if (PL_sv_count != 0) {
1221 SV* sva;
1222 SV* sv;
eb578fdb 1223 SV* svend;
eba0f806 1224
ad64d0ec 1225 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1226 svend = &sva[SvREFCNT(sva)];
1227 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1228 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1229 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1230 " flags=0x%"UVxf
fd0854ff 1231 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1232 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1233 "serial %"UVuf"\n",
574b8821
NC
1234 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1235 pTHX__VALUE,
fd0854ff
DM
1236 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1237 sv->sv_debug_line,
1238 sv->sv_debug_inpad ? "for" : "by",
1239 sv->sv_debug_optype ?
1240 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1241 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1242 sv->sv_debug_serial
fd0854ff 1243 );
2aa47728 1244#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1245 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1246#endif
eba0f806
DM
1247 }
1248 }
1249 }
1250 }
2aa47728
NC
1251#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1252 {
1253 int status;
1254 fd_set rset;
1255 /* Wait for up to 4 seconds for child to terminate.
1256 This seems to be the least effort way of timing out on reaping
1257 its exit status. */
1258 struct timeval waitfor = {4, 0};
41e4abd8 1259 int sock = PL_dumper_fd;
2aa47728
NC
1260
1261 shutdown(sock, 1);
1262 FD_ZERO(&rset);
1263 FD_SET(sock, &rset);
1264 select(sock + 1, &rset, NULL, NULL, &waitfor);
1265 waitpid(child, &status, WNOHANG);
1266 close(sock);
1267 }
1268#endif
eba0f806 1269#endif
77abb4c6
NC
1270#ifdef DEBUG_LEAKING_SCALARS_ABORT
1271 if (PL_sv_count)
1272 abort();
1273#endif
bf9cdc68 1274 PL_sv_count = 0;
eba0f806 1275
56a2bab7 1276#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1277 /* No more IO - including error messages ! */
1278 PerlIO_cleanup(aTHX);
1279#endif
1280
9f4bd222 1281 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1282 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1283 for no arg - and will try and SvREFCNT_dec it.
1284 */
1285 SvREFCNT(&PL_sv_undef) = 0;
1286 SvREADONLY_off(&PL_sv_undef);
1287
3280af22 1288 Safefree(PL_origfilename);
bd61b366 1289 PL_origfilename = NULL;
43c5f42d 1290 Safefree(PL_reg_curpm);
dd28f7bb 1291 free_tied_hv_pool();
3280af22 1292 Safefree(PL_op_mask);
cf36064f 1293 Safefree(PL_psig_name);
bf9cdc68 1294 PL_psig_name = (SV**)NULL;
d525a7b2 1295 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1296 {
1297 /* We need to NULL PL_psig_pend first, so that
1298 signal handlers know not to use it */
1299 int *psig_save = PL_psig_pend;
1300 PL_psig_pend = (int*)NULL;
1301 Safefree(psig_save);
1302 }
6e72f9df 1303 nuke_stacks();
284167a5
SM
1304 TAINTING_set(FALSE);
1305 TAINT_WARN_set(FALSE);
3280af22 1306 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1307
a0d0e21e 1308 DEBUG_P(debprofdump());
d33b2eba 1309
b173165c
FC
1310 PL_debug = 0;
1311
e5dd39fc 1312#ifdef USE_REENTRANT_API
10bc17b6 1313 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1314#endif
1315
612f20c3
GS
1316 sv_free_arenas();
1317
5d9a96ca
DM
1318 while (PL_regmatch_slab) {
1319 regmatch_slab *s = PL_regmatch_slab;
1320 PL_regmatch_slab = PL_regmatch_slab->next;
1321 Safefree(s);
1322 }
1323
fc36a67e
PP
1324 /* As the absolutely last thing, free the non-arena SV for mess() */
1325
3280af22 1326 if (PL_mess_sv) {
f350b448
NC
1327 /* we know that type == SVt_PVMG */
1328
9c63abab 1329 /* it could have accumulated taint magic */
f350b448
NC
1330 MAGIC* mg;
1331 MAGIC* moremagic;
1332 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1333 moremagic = mg->mg_moremagic;
1334 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1335 && mg->mg_len >= 0)
1336 Safefree(mg->mg_ptr);
1337 Safefree(mg);
9c63abab 1338 }
f350b448 1339
fc36a67e 1340 /* we know that type >= SVt_PV */
8bd4d4c5 1341 SvPV_free(PL_mess_sv);
3280af22
NIS
1342 Safefree(SvANY(PL_mess_sv));
1343 Safefree(PL_mess_sv);
a0714e2c 1344 PL_mess_sv = NULL;
fc36a67e 1345 }
37038d91 1346 return STATUS_EXIT;
79072805
LW
1347}
1348
954c1994
GS
1349/*
1350=for apidoc perl_free
1351
1352Releases a Perl interpreter. See L<perlembed>.
1353
1354=cut
1355*/
1356
79072805 1357void
0cb96387 1358perl_free(pTHXx)
79072805 1359{
5174512c
NC
1360 dVAR;
1361
7918f24d
NC
1362 PERL_ARGS_ASSERT_PERL_FREE;
1363
c301d606
DM
1364 if (PL_veto_cleanup)
1365 return;
1366
7cb608b5 1367#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1368 {
1369 /*
1370 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1371 * value as we're probably hunting memory leaks then
1372 */
36e77d41 1373 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1374 const U32 old_debug = PL_debug;
55ef9aae
MHM
1375 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1376 thread at thread exit. */
4fd0a9b8
NC
1377 if (DEBUG_m_TEST) {
1378 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1379 "free this thread's memory\n");
1380 PL_debug &= ~ DEBUG_m_FLAG;
1381 }
6edcbed6
DD
1382 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1383 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1384 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1385 safesysfree(ptr);
1386 }
4fd0a9b8 1387 PL_debug = old_debug;
55ef9aae
MHM
1388 }
1389 }
7cb608b5
NC
1390#endif
1391
acfe0abc 1392#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1393# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1394 {
acfe0abc 1395# ifdef NETWARE
7af12a34 1396 void *host = nw_internal_host;
7af12a34 1397 PerlMem_free(aTHXx);
7af12a34 1398 nw_delete_internal_host(host);
acfe0abc 1399# else
bdb50480
NC
1400 void *host = w32_internal_host;
1401 PerlMem_free(aTHXx);
7af12a34 1402 win32_delete_internal_host(host);
acfe0abc 1403# endif
7af12a34 1404 }
1c0ca838
GS
1405# else
1406 PerlMem_free(aTHXx);
1407# endif
acfe0abc
GS
1408#else
1409 PerlMem_free(aTHXx);
76e3520e 1410#endif
79072805
LW
1411}
1412
b7f7fff6 1413#if defined(USE_ITHREADS)
aebd1ac7
GA
1414/* provide destructors to clean up the thread key when libperl is unloaded */
1415#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1416
826955bd 1417#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1418#pragma fini "perl_fini"
666ad1ec
GA
1419#elif defined(__sun) && !defined(__GNUC__)
1420#pragma fini (perl_fini)
aebd1ac7
GA
1421#endif
1422
0dbb1585
AL
1423static void
1424#if defined(__GNUC__)
1425__attribute__((destructor))
aebd1ac7 1426#endif
de009b76 1427perl_fini(void)
aebd1ac7 1428{
27da23d5 1429 dVAR;
5c64bffd
NC
1430 if (
1431#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1432 my_vars &&
1433#endif
1434 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1435 FREE_THREAD_KEY;
1436}
1437
1438#endif /* WIN32 */
1439#endif /* THREADS */
1440
4b556e6c 1441void
864dbfa3 1442Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1443{
3280af22
NIS
1444 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1445 PL_exitlist[PL_exitlistlen].fn = fn;
1446 PL_exitlist[PL_exitlistlen].ptr = ptr;
1447 ++PL_exitlistlen;
4b556e6c
JD
1448}
1449
954c1994
GS
1450/*
1451=for apidoc perl_parse
1452
1453Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1454
1455=cut
1456*/
1457
03d9f026
FC
1458#define SET_CURSTASH(newstash) \
1459 if (PL_curstash != newstash) { \
1460 SvREFCNT_dec(PL_curstash); \
1461 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1462 }
1463
79072805 1464int
0cb96387 1465perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1466{
27da23d5 1467 dVAR;
6224f72b 1468 I32 oldscope;
6224f72b 1469 int ret;
db36c5a1 1470 dJMPENV;
8d063cd8 1471
7918f24d
NC
1472 PERL_ARGS_ASSERT_PERL_PARSE;
1473#ifndef MULTIPLICITY
ed6c66dd 1474 PERL_UNUSED_ARG(my_perl);
7918f24d 1475#endif
7dc86639 1476#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1477 {
7dc86639
YO
1478 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1479
22ff3130 1480 if (s && strEQ(s, "1")) {
7dc86639
YO
1481 unsigned char *seed= PERL_HASH_SEED;
1482 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1483 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1484 while (seed < seed_end) {
1485 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1486 }
6a5b4183
YO
1487#ifdef PERL_HASH_RANDOMIZE_KEYS
1488 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1489 PL_HASH_RAND_BITS_ENABLED,
1490 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1491#endif
7dc86639
YO
1492 PerlIO_printf(Perl_debug_log, "\n");
1493 }
b0891165
JH
1494 }
1495#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1496 PL_origargc = argc;
e2975953 1497 PL_origargv = argv;
a0d0e21e 1498
a2722ac9
GA
1499 if (PL_origalen != 0) {
1500 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1501 }
1502 else {
3cb9023d
JH
1503 /* Set PL_origalen be the sum of the contiguous argv[]
1504 * elements plus the size of the env in case that it is
e9137a8e 1505 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1506 * as the maximum modifiable length of $0. In the worst case
1507 * the area we are able to modify is limited to the size of
43c32782 1508 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1509 * --jhi */
e1ec3a88 1510 const char *s = NULL;
54bfe034 1511 int i;
b7249aaf 1512 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1513 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1514 const UV aligned =
43c32782
JH
1515 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1516
1517 /* See if all the arguments are contiguous in memory. Note
1518 * that 'contiguous' is a loose term because some platforms
1519 * align the argv[] and the envp[]. If the arguments look
1520 * like non-aligned, assume that they are 'strictly' or
1521 * 'traditionally' contiguous. If the arguments look like
1522 * aligned, we just check that they are within aligned
1523 * PTRSIZE bytes. As long as no system has something bizarre
1524 * like the argv[] interleaved with some other data, we are
1525 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1526 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1527 while (*s) s++;
1528 for (i = 1; i < PL_origargc; i++) {
1529 if ((PL_origargv[i] == s + 1
43c32782 1530#ifdef OS2
c8941eeb 1531 || PL_origargv[i] == s + 2
43c32782 1532#endif
c8941eeb
JH
1533 )
1534 ||
1535 (aligned &&
1536 (PL_origargv[i] > s &&
1537 PL_origargv[i] <=
1538 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1539 )
1540 {
1541 s = PL_origargv[i];
1542 while (*s) s++;
1543 }
1544 else
1545 break;
54bfe034 1546 }
54bfe034 1547 }
a4a109c2
JD
1548
1549#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1550 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1551 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1552 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1553 ||
1554 (aligned &&
1555 (PL_origenviron[0] > s &&
1556 PL_origenviron[0] <=
1557 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1558 )
1559 {
9d419b5f 1560#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1561 s = PL_origenviron[0];
1562 while (*s) s++;
1563#endif
bd61b366 1564 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1565 /* Force copy of environment. */
1566 for (i = 1; PL_origenviron[i]; i++) {
1567 if (PL_origenviron[i] == s + 1
1568 ||
1569 (aligned &&
1570 (PL_origenviron[i] > s &&
1571 PL_origenviron[i] <=
1572 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1573 )
1574 {
1575 s = PL_origenviron[i];
1576 while (*s) s++;
1577 }
1578 else
1579 break;
54bfe034 1580 }
43c32782 1581 }
54bfe034 1582 }
a4a109c2
JD
1583#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1584
2d2af554 1585 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1586 }
1587
3280af22 1588 if (PL_do_undump) {
a0d0e21e
LW
1589
1590 /* Come here if running an undumped a.out. */
1591
3280af22
NIS
1592 PL_origfilename = savepv(argv[0]);
1593 PL_do_undump = FALSE;
a0d0e21e 1594 cxstack_ix = -1; /* start label stack again */
748a9306 1595 init_ids();
284167a5 1596 assert (!TAINT_get);
b7975bdd 1597 TAINT;
e2051532 1598 set_caret_X();
b7975bdd 1599 TAINT_NOT;
a0d0e21e
LW
1600 init_postdump_symbols(argc,argv,env);
1601 return 0;
1602 }
1603
3280af22 1604 if (PL_main_root) {
3280af22 1605 op_free(PL_main_root);
5f66b61c 1606 PL_main_root = NULL;
ff0cee69 1607 }
5f66b61c 1608 PL_main_start = NULL;
3280af22 1609 SvREFCNT_dec(PL_main_cv);
601f1833 1610 PL_main_cv = NULL;
79072805 1611
3280af22
NIS
1612 time(&PL_basetime);
1613 oldscope = PL_scopestack_ix;
599cee73 1614 PL_dowarn = G_WARN_OFF;
f86702cc 1615
14dd3ad8 1616 JMPENV_PUSH(ret);
6224f72b 1617 switch (ret) {
312caa8e 1618 case 0:
14dd3ad8 1619 parse_body(env,xsinit);
9ebf26ad 1620 if (PL_unitcheckav) {
3c10abe3 1621 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1622 }
1623 if (PL_checkav) {
ca7b837b 1624 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1625 call_list(oldscope, PL_checkav);
9ebf26ad 1626 }
14dd3ad8
GS
1627 ret = 0;
1628 break;
6224f72b
GS
1629 case 1:
1630 STATUS_ALL_FAILURE;
924ba076 1631 /* FALLTHROUGH */
6224f72b
GS
1632 case 2:
1633 /* my_exit() was called */
3280af22 1634 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1635 LEAVE;
1636 FREETMPS;
03d9f026 1637 SET_CURSTASH(PL_defstash);
9ebf26ad 1638 if (PL_unitcheckav) {
3c10abe3 1639 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1640 }
1641 if (PL_checkav) {
ca7b837b 1642 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1643 call_list(oldscope, PL_checkav);
9ebf26ad 1644 }
37038d91 1645 ret = STATUS_EXIT;
14dd3ad8 1646 break;
6224f72b 1647 case 3:
bf49b057 1648 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1649 ret = 1;
1650 break;
6224f72b 1651 }
14dd3ad8
GS
1652 JMPENV_POP;
1653 return ret;
1654}
1655
4a5df386
NC
1656/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1657 miniperl, and we need to see those flags reflected in the values here. */
1658
1659/* What this returns is subject to change. Use the public interface in Config.
1660 */
1661static void
1662S_Internals_V(pTHX_ CV *cv)
1663{
1664 dXSARGS;
1665#ifdef LOCAL_PATCH_COUNT
1666 const int local_patch_count = LOCAL_PATCH_COUNT;
1667#else
1668 const int local_patch_count = 0;
1669#endif
2dc296d2 1670 const int entries = 3 + local_patch_count;
4a5df386 1671 int i;
fe1c5936 1672 static const char non_bincompat_options[] =
4a5df386
NC
1673# ifdef DEBUGGING
1674 " DEBUGGING"
1675# endif
1676# ifdef NO_MATHOMS
0d311fbe 1677 " NO_MATHOMS"
4a5df386 1678# endif
59b86f4b
DM
1679# ifdef NO_HASH_SEED
1680 " NO_HASH_SEED"
1681# endif
3b0e4ee2
MB
1682# ifdef NO_TAINT_SUPPORT
1683 " NO_TAINT_SUPPORT"
1684# endif
cb26ef7a
MB
1685# ifdef PERL_BOOL_AS_CHAR
1686 " PERL_BOOL_AS_CHAR"
1687# endif
4a5df386
NC
1688# ifdef PERL_DISABLE_PMC
1689 " PERL_DISABLE_PMC"
1690# endif
1691# ifdef PERL_DONT_CREATE_GVSV
1692 " PERL_DONT_CREATE_GVSV"
1693# endif
9a044a43
NC
1694# ifdef PERL_EXTERNAL_GLOB
1695 " PERL_EXTERNAL_GLOB"
1696# endif
59b86f4b
DM
1697# ifdef PERL_HASH_FUNC_SIPHASH
1698 " PERL_HASH_FUNC_SIPHASH"
1699# endif
1700# ifdef PERL_HASH_FUNC_SDBM
1701 " PERL_HASH_FUNC_SDBM"
1702# endif
1703# ifdef PERL_HASH_FUNC_DJB2
1704 " PERL_HASH_FUNC_DJB2"
1705# endif
1706# ifdef PERL_HASH_FUNC_SUPERFAST
1707 " PERL_HASH_FUNC_SUPERFAST"
1708# endif
1709# ifdef PERL_HASH_FUNC_MURMUR3
1710 " PERL_HASH_FUNC_MURMUR3"
1711# endif
1712# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1713 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1714# endif
1715# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1716 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1717# endif
1718# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1719 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1720# endif
4a5df386
NC
1721# ifdef PERL_IS_MINIPERL
1722 " PERL_IS_MINIPERL"
1723# endif
1724# ifdef PERL_MALLOC_WRAP
1725 " PERL_MALLOC_WRAP"
1726# endif
1727# ifdef PERL_MEM_LOG
1728 " PERL_MEM_LOG"
1729# endif
1730# ifdef PERL_MEM_LOG_NOIMPL
1731 " PERL_MEM_LOG_NOIMPL"
1732# endif
2542212d
DM
1733# ifdef PERL_NEW_COPY_ON_WRITE
1734 " PERL_NEW_COPY_ON_WRITE"
1735# endif
59b86f4b
DM
1736# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1737 " PERL_PERTURB_KEYS_DETERMINISTIC"
1738# endif
1739# ifdef PERL_PERTURB_KEYS_DISABLED
1740 " PERL_PERTURB_KEYS_DISABLED"
1741# endif
1742# ifdef PERL_PERTURB_KEYS_RANDOM
1743 " PERL_PERTURB_KEYS_RANDOM"
1744# endif
c3cf41ec
NC
1745# ifdef PERL_PRESERVE_IVUV
1746 " PERL_PRESERVE_IVUV"
1747# endif
c051e30b
NC
1748# ifdef PERL_RELOCATABLE_INCPUSH
1749 " PERL_RELOCATABLE_INCPUSH"
1750# endif
4a5df386
NC
1751# ifdef PERL_USE_DEVEL
1752 " PERL_USE_DEVEL"
1753# endif
1754# ifdef PERL_USE_SAFE_PUTENV
1755 " PERL_USE_SAFE_PUTENV"
1756# endif
a3749cf3
NC
1757# ifdef UNLINK_ALL_VERSIONS
1758 " UNLINK_ALL_VERSIONS"
1759# endif
de618ee4
NC
1760# ifdef USE_ATTRIBUTES_FOR_PERLIO
1761 " USE_ATTRIBUTES_FOR_PERLIO"
1762# endif
4a5df386
NC
1763# ifdef USE_FAST_STDIO
1764 " USE_FAST_STDIO"
1765# endif
59b86f4b
DM
1766# ifdef USE_HASH_SEED_EXPLICIT
1767 " USE_HASH_SEED_EXPLICIT"
1768# endif
98548bdf
NC
1769# ifdef USE_LOCALE
1770 " USE_LOCALE"
1771# endif
98548bdf
NC
1772# ifdef USE_LOCALE_CTYPE
1773 " USE_LOCALE_CTYPE"
1774# endif
5a8d8935
NC
1775# ifdef USE_PERL_ATOF
1776 " USE_PERL_ATOF"
1777# endif
0d311fbe
NC
1778# ifdef USE_SITECUSTOMIZE
1779 " USE_SITECUSTOMIZE"
1780# endif
4a5df386
NC
1781 ;
1782 PERL_UNUSED_ARG(cv);
d3db1514 1783 PERL_UNUSED_VAR(items);
4a5df386
NC
1784
1785 EXTEND(SP, entries);
1786
1787 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1788 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1789 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1790
1791#ifdef __DATE__
1792# ifdef __TIME__
1793 PUSHs(Perl_newSVpvn_flags(aTHX_
1794 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1795 SVs_TEMP));
1796# else
1797 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1798 SVs_TEMP));
1799# endif
1800#else
1801 PUSHs(&PL_sv_undef);
1802#endif
1803
4a5df386
NC
1804 for (i = 1; i <= local_patch_count; i++) {
1805 /* This will be an undef, if PL_localpatches[i] is NULL. */
1806 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1807 }
1808
1809 XSRETURN(entries);
1810}
1811
be71fc8f
NC
1812#define INCPUSH_UNSHIFT 0x01
1813#define INCPUSH_ADD_OLD_VERS 0x02
1814#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1815#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1816#define INCPUSH_NOT_BASEDIR 0x10
1817#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1818#define INCPUSH_ADD_SUB_DIRS \
1819 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1820
312caa8e 1821STATIC void *
14dd3ad8 1822S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1823{
27da23d5 1824 dVAR;
2f9285f8 1825 PerlIO *rsfp;
312caa8e 1826 int argc = PL_origargc;
8f42b153 1827 char **argv = PL_origargv;
e1ec3a88 1828 const char *scriptname = NULL;
312caa8e 1829 VOL bool dosearch = FALSE;
eb578fdb 1830 char c;
737c24fc 1831 bool doextract = FALSE;
bd61b366 1832 const char *cddir = NULL;
ab019eaa 1833#ifdef USE_SITECUSTOMIZE
20ef40cf 1834 bool minus_f = FALSE;
ab019eaa 1835#endif
95670bde 1836 SV *linestr_sv = NULL;
5486870f 1837 bool add_read_e_script = FALSE;
87606032 1838 U32 lex_start_flags = 0;
009d90df 1839
ca7b837b 1840 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1841
6224f72b 1842 init_main_stash();
54310121 1843
c7030b81
NC
1844 {
1845 const char *s;
6224f72b
GS
1846 for (argc--,argv++; argc > 0; argc--,argv++) {
1847 if (argv[0][0] != '-' || !argv[0][1])
1848 break;
6224f72b
GS
1849 s = argv[0]+1;
1850 reswitch:
47f56822 1851 switch ((c = *s)) {
729a02f2 1852 case 'C':
1d5472a9
GS
1853#ifndef PERL_STRICT_CR
1854 case '\r':
1855#endif
6224f72b
GS
1856 case ' ':
1857 case '0':
1858 case 'F':
1859 case 'a':
1860 case 'c':
1861 case 'd':
1862 case 'D':
1863 case 'h':
1864 case 'i':
1865 case 'l':
1866 case 'M':
1867 case 'm':
1868 case 'n':
1869 case 'p':
1870 case 's':
1871 case 'u':
1872 case 'U':
1873 case 'v':
599cee73
PM
1874 case 'W':
1875 case 'X':
6224f72b 1876 case 'w':
97bd5664 1877 if ((s = moreswitches(s)))
6224f72b
GS
1878 goto reswitch;
1879 break;
33b78306 1880
1dbad523 1881 case 't':
dc6d7f5c 1882#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1883 /* silently ignore */
dc6d7f5c 1884#elif defined(NO_TAINT_SUPPORT)
3231f579 1885 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1886 "Cowardly refusing to run with -t or -T flags");
1887#else
22f7c9c9 1888 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1889 if( !TAINTING_get ) {
1890 TAINT_WARN_set(TRUE);
1891 TAINTING_set(TRUE);
317ea90d 1892 }
284167a5 1893#endif
317ea90d
MS
1894 s++;
1895 goto reswitch;
6224f72b 1896 case 'T':
dc6d7f5c 1897#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1898 /* silently ignore */
dc6d7f5c 1899#elif defined(NO_TAINT_SUPPORT)
3231f579 1900 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1901 "Cowardly refusing to run with -t or -T flags");
1902#else
22f7c9c9 1903 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1904 TAINTING_set(TRUE);
1905 TAINT_WARN_set(FALSE);
1906#endif
6224f72b
GS
1907 s++;
1908 goto reswitch;
f86702cc 1909
bc9b29db
RH
1910 case 'E':
1911 PL_minus_E = TRUE;
924ba076 1912 /* FALLTHROUGH */
6224f72b 1913 case 'e':
f20b2998 1914 forbid_setid('e', FALSE);
3280af22 1915 if (!PL_e_script) {
396482e1 1916 PL_e_script = newSVpvs("");
5486870f 1917 add_read_e_script = TRUE;
6224f72b
GS
1918 }
1919 if (*++s)
3280af22 1920 sv_catpv(PL_e_script, s);
6224f72b 1921 else if (argv[1]) {
3280af22 1922 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1923 argc--,argv++;
1924 }
1925 else
47f56822 1926 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1927 sv_catpvs(PL_e_script, "\n");
6224f72b 1928 break;
afe37c7d 1929
20ef40cf 1930 case 'f':
f5542d3a 1931#ifdef USE_SITECUSTOMIZE
20ef40cf 1932 minus_f = TRUE;
f5542d3a 1933#endif
20ef40cf
GA
1934 s++;
1935 goto reswitch;
1936
6224f72b 1937 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1938 forbid_setid('I', FALSE);
bd61b366 1939 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1940 argc--,argv++;
1941 }
6224f72b 1942 if (s && *s) {
0df16ed7 1943 STRLEN len = strlen(s);
55b4bc1c 1944 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1945 }
1946 else
a67e862a 1947 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1948 break;
6224f72b 1949 case 'S':
f20b2998 1950 forbid_setid('S', FALSE);
6224f72b
GS
1951 dosearch = TRUE;
1952 s++;
1953 goto reswitch;
1954 case 'V':
7edfd0ef
NC
1955 {
1956 SV *opts_prog;
1957
7edfd0ef 1958 if (*++s != ':') {
37ca4a5b 1959 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1960 }
1961 else {
1962 ++s;
1963 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1964 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1965 0, s, 0);
1966 s += strlen(s);
1967 }
37ca4a5b 1968 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1969 /* don't look for script or read stdin */
1970 scriptname = BIT_BUCKET;
1971 goto reswitch;
6224f72b 1972 }
6224f72b 1973 case 'x':
737c24fc 1974 doextract = TRUE;
6224f72b 1975 s++;
304334da 1976 if (*s)
f4c556ac 1977 cddir = s;
6224f72b
GS
1978 break;
1979 case 0:
1980 break;
1981 case '-':
1982 if (!*++s || isSPACE(*s)) {
1983 argc--,argv++;
1984 goto switch_end;
1985 }
ee8bc8b7
NC
1986 /* catch use of gnu style long options.
1987 Both of these exit immediately. */
1988 if (strEQ(s, "version"))
1989 minus_v();
1990 if (strEQ(s, "help"))
1991 usage();
6224f72b 1992 s--;
924ba076 1993 /* FALLTHROUGH */
6224f72b 1994 default:
cea2e8a9 1995 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1996 }
1997 }
c7030b81
NC
1998 }
1999
6224f72b 2000 switch_end:
54310121 2001
c7030b81
NC
2002 {
2003 char *s;
2004
f675dbe5
CB
2005 if (
2006#ifndef SECURE_INTERNAL_GETENV
284167a5 2007 !TAINTING_get &&
f675dbe5 2008#endif
cf756827 2009 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2010 {
9e0b0d62
KW
2011 /* s points to static memory in getenv(), which may be overwritten at
2012 * any time; use a mortal copy instead */
2013 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2014
74288ac8
GS
2015 while (isSPACE(*s))
2016 s++;
317ea90d 2017 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2018#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2019 /* silently ignore */
dc6d7f5c 2020#elif defined(NO_TAINT_SUPPORT)
3231f579 2021 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2022 "Cowardly refusing to run with -t or -T flags");
2023#else
22f7c9c9 2024 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2025 TAINTING_set(TRUE);
2026 TAINT_WARN_set(FALSE);
2027#endif
317ea90d 2028 }
74288ac8 2029 else {
bd61b366 2030 char *popt_copy = NULL;
74288ac8 2031 while (s && *s) {
54913509 2032 const char *d;
74288ac8
GS
2033 while (isSPACE(*s))
2034 s++;
2035 if (*s == '-') {
2036 s++;
2037 if (isSPACE(*s))
2038 continue;
2039 }
4ea8f8fb 2040 d = s;
74288ac8
GS
2041 if (!*s)
2042 break;
2b622f1a 2043 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2044 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2045 while (++s && *s) {
2046 if (isSPACE(*s)) {
cf756827 2047 if (!popt_copy) {
bfa6c418
NC
2048 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2049 s = popt_copy + (s - d);
2050 d = popt_copy;
cf756827 2051 }
4ea8f8fb
MS
2052 *s++ = '\0';
2053 break;
2054 }
2055 }
1c4db469 2056 if (*d == 't') {
dc6d7f5c 2057#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2058 /* silently ignore */
dc6d7f5c 2059#elif defined(NO_TAINT_SUPPORT)
3231f579 2060 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2061 "Cowardly refusing to run with -t or -T flags");
2062#else
2063 if( !TAINTING_get) {
2064 TAINT_WARN_set(TRUE);
2065 TAINTING_set(TRUE);
317ea90d 2066 }
284167a5 2067#endif
1c4db469 2068 } else {
97bd5664 2069 moreswitches(d);
1c4db469 2070 }
6224f72b 2071 }
6224f72b
GS
2072 }
2073 }
c7030b81 2074 }
a0d0e21e 2075
c29067d7
CH
2076 /* Set $^X early so that it can be used for relocatable paths in @INC */
2077 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2078 assert (!TAINT_get);
c29067d7 2079 TAINT;
e2051532 2080 set_caret_X();
c29067d7
CH
2081 TAINT_NOT;
2082
43c0c913 2083#if defined(USE_SITECUSTOMIZE)
20ef40cf 2084 if (!minus_f) {
43c0c913 2085 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2086 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2087 ie a q() operator with a NUL byte as a the delimiter. This avoids
2088 problems with pathnames containing (say) ' */
43c0c913
NC
2089# ifdef PERL_IS_MINIPERL
2090 AV *const inc = GvAV(PL_incgv);
2091 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2092
2093 if (inc0) {
15870c5c
NC
2094 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2095 it should be reported immediately as a build failure. */
43c0c913
NC
2096 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2097 Perl_newSVpvf(aTHX_
5de87db5 2098 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2099 "do {local $!; -f $f }"
2100 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2101 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2102 }
2103# else
2104 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2105 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2106 if (raw_sitelib) {
2107 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2108 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2109 INCPUSH_CAN_RELOCATE);
2110 const char *const sitelib = SvPVX(sitelib_sv);
2111 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2112 Perl_newSVpvf(aTHX_
2113 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2114 0, SVfARG(sitelib), 0,
2115 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2116 assert (SvREFCNT(sitelib_sv) == 1);
2117 SvREFCNT_dec(sitelib_sv);
2118 }
43c0c913 2119# endif
20ef40cf
GA
2120 }
2121#endif
2122
6224f72b
GS
2123 if (!scriptname)
2124 scriptname = argv[0];
3280af22 2125 if (PL_e_script) {
6224f72b
GS
2126 argc++,argv--;
2127 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2128 }
bd61b366 2129 else if (scriptname == NULL) {
6224f72b
GS
2130#ifdef MSDOS
2131 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2132 moreswitches("h");
6224f72b
GS
2133#endif
2134 scriptname = "-";
2135 }
2136
284167a5 2137 assert (!TAINT_get);
2cace6ac 2138 init_perllib();
6224f72b 2139
a52eba0e 2140 {
f20b2998 2141 bool suidscript = FALSE;
829372d3 2142
8d113837 2143 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2144 if (!rsfp) {
2145 rsfp = PerlIO_stdin();
87606032 2146 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2147 }
6224f72b 2148
b24bc095 2149 validate_suid(rsfp);
6224f72b 2150
64ca3a65 2151#ifndef PERL_MICRO
a52eba0e
NC
2152# if defined(SIGCHLD) || defined(SIGCLD)
2153 {
2154# ifndef SIGCHLD
2155# define SIGCHLD SIGCLD
2156# endif
2157 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2158 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2159 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2160 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2161 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2162 }
0b5b802d 2163 }
a52eba0e 2164# endif
64ca3a65 2165#endif
0b5b802d 2166
737c24fc 2167 if (doextract) {
faef540c 2168
f20b2998 2169 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2170 setuid scripts. */
2171 forbid_setid('x', suidscript);
f20b2998 2172 /* Hence you can't get here if suidscript is true */
faef540c 2173
95670bde
NC
2174 linestr_sv = newSV_type(SVt_PV);
2175 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2176 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2177 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2178 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2179 }
f4c556ac 2180 }
6224f72b 2181
ea726b52 2182 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2183 CvUNIQUE_on(PL_compcv);
2184
eacbb379 2185 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2186
dd69841b
BB
2187 PL_isarev = newHV();
2188
0c4f7ff0 2189 boot_core_PerlIO();
6224f72b 2190 boot_core_UNIVERSAL();
e1a479c5 2191 boot_core_mro();
4a5df386 2192 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2193
2194 if (xsinit)
acfe0abc 2195 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2196#ifndef PERL_MICRO
739a0b84 2197#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2198 init_os_extras();
6224f72b 2199#endif
64ca3a65 2200#endif
6224f72b 2201
29209bc5 2202#ifdef USE_SOCKS
1b9c9cf5
DH
2203# ifdef HAS_SOCKS5_INIT
2204 socks5_init(argv[0]);
2205# else
29209bc5 2206 SOCKSinit(argv[0]);
1b9c9cf5 2207# endif
ac27b0f5 2208#endif
29209bc5 2209
6224f72b
GS
2210 init_predump_symbols();
2211 /* init_postdump_symbols not currently designed to be called */
2212 /* more than once (ENV isn't cleared first, for example) */
2213 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2214 if (!PL_do_undump)
6224f72b
GS
2215 init_postdump_symbols(argc,argv,env);
2216
27da23d5
JH
2217 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2218 * or explicitly in some platforms.
085a54d9 2219 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2220 * look like the user wants to use UTF-8. */
a0fd4948 2221#if defined(__SYMBIAN32__)
27da23d5
JH
2222 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2223#endif
e27b5b51 2224# ifndef PERL_IS_MINIPERL
06e66572
JH
2225 if (PL_unicode) {
2226 /* Requires init_predump_symbols(). */
a05d7ebb 2227 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2228 IO* io;
2229 PerlIO* fp;
2230 SV* sv;
2231
a05d7ebb 2232 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2233 * and the default open disciplines. */
a05d7ebb
JH
2234 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2235 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2236 (fp = IoIFP(io)))
2237 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2238 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2239 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2240 (fp = IoOFP(io)))
2241 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2242 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2243 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2244 (fp = IoOFP(io)))
2245 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2246 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2247 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2248 SVt_PV)))) {
a05d7ebb
JH
2249 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2250 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2251 if (in) {
2252 if (out)
76f68e9b 2253 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2254 else
76f68e9b 2255 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2256 }
2257 else if (out)
76f68e9b 2258 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2259 SvSETMAGIC(sv);
2260 }
b310b053
JH
2261 }
2262 }
e27b5b51 2263#endif
b310b053 2264
c7030b81
NC
2265 {
2266 const char *s;
4ffa73a3
JH
2267 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2268 if (strEQ(s, "unsafe"))
2269 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2270 else if (strEQ(s, "safe"))
2271 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2272 else
2273 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2274 }
c7030b81 2275 }
4ffa73a3 2276
81d86705 2277
87606032 2278 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2279 SvREFCNT_dec(linestr_sv);
95670bde 2280
219f7226 2281 PL_subname = newSVpvs("main");
6224f72b 2282
5486870f
DM
2283 if (add_read_e_script)
2284 filter_add(read_e_script, NULL);
2285
6224f72b
GS
2286 /* now parse the script */
2287
93189314 2288 SETERRNO(0,SS_NORMAL);
28ac2b49 2289 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2290 if (PL_minus_c)
cea2e8a9 2291 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2292 else {
cea2e8a9 2293 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2294 PL_origfilename);
6224f72b
GS
2295 }
2296 }
57843af0 2297 CopLINE_set(PL_curcop, 0);
03d9f026 2298 SET_CURSTASH(PL_defstash);
3280af22
NIS
2299 if (PL_e_script) {
2300 SvREFCNT_dec(PL_e_script);
a0714e2c 2301 PL_e_script = NULL;
6224f72b
GS
2302 }
2303
3280af22 2304 if (PL_do_undump)
6224f72b
GS
2305 my_unexec();
2306
57843af0
GS
2307 if (isWARN_ONCE) {
2308 SAVECOPFILE(PL_curcop);
2309 SAVECOPLINE(PL_curcop);
3280af22 2310 gv_check(PL_defstash);
57843af0 2311 }
6224f72b
GS
2312
2313 LEAVE;
2314 FREETMPS;
2315
2316#ifdef MYMALLOC
f6a607bc
RGS
2317 {
2318 const char *s;
22ff3130
HS
2319 UV uv;
2320 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2321 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2322 dump_mstats("after compilation:");
f6a607bc 2323 }
6224f72b
GS
2324#endif
2325
2326 ENTER;
febb3a6d 2327 PL_restartjmpenv = NULL;
3280af22 2328 PL_restartop = 0;
312caa8e 2329 return NULL;
6224f72b
GS
2330}
2331
954c1994
GS
2332/*
2333=for apidoc perl_run
2334
2335Tells a Perl interpreter to run. See L<perlembed>.
2336
2337=cut
2338*/
2339
6224f72b 2340int
0cb96387 2341perl_run(pTHXx)
6224f72b 2342{
6224f72b 2343 I32 oldscope;
14dd3ad8 2344 int ret = 0;
db36c5a1 2345 dJMPENV;
6224f72b 2346
7918f24d
NC
2347 PERL_ARGS_ASSERT_PERL_RUN;
2348#ifndef MULTIPLICITY
ed6c66dd 2349 PERL_UNUSED_ARG(my_perl);
7918f24d 2350#endif
9d4ba2ae 2351
3280af22 2352 oldscope = PL_scopestack_ix;
96e176bf
CL
2353#ifdef VMS
2354 VMSISH_HUSHED = 0;
2355#endif
6224f72b 2356
14dd3ad8 2357 JMPENV_PUSH(ret);
6224f72b
GS
2358 switch (ret) {
2359 case 1:
2360 cxstack_ix = -1; /* start context stack again */
312caa8e 2361 goto redo_body;
14dd3ad8 2362 case 0: /* normal completion */
14dd3ad8
GS
2363 redo_body:
2364 run_body(oldscope);
924ba076 2365 /* FALLTHROUGH */
14dd3ad8 2366 case 2: /* my_exit() */
3280af22 2367 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2368 LEAVE;
2369 FREETMPS;
03d9f026 2370 SET_CURSTASH(PL_defstash);
3a1ee7e8 2371 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2372 PL_endav && !PL_minus_c) {
ca7b837b 2373 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2374 call_list(oldscope, PL_endav);
9ebf26ad 2375 }
6224f72b
GS
2376#ifdef MYMALLOC
2377 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2378 dump_mstats("after execution: ");
2379#endif
37038d91 2380 ret = STATUS_EXIT;
14dd3ad8 2381 break;
6224f72b 2382 case 3:
312caa8e
CS
2383 if (PL_restartop) {
2384 POPSTACK_TO(PL_mainstack);
2385 goto redo_body;
6224f72b 2386 }
5637ef5b 2387 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2388 FREETMPS;
14dd3ad8
GS
2389 ret = 1;
2390 break;
6224f72b
GS
2391 }
2392
14dd3ad8
GS
2393 JMPENV_POP;
2394 return ret;
312caa8e
CS
2395}
2396
dd374669 2397STATIC void
14dd3ad8
GS
2398S_run_body(pTHX_ I32 oldscope)
2399{
d3b97530
DM
2400 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2401 PL_sawampersand ? "Enabling" : "Omitting",
2402 (unsigned int)(PL_sawampersand)));
6224f72b 2403
3280af22 2404 if (!PL_restartop) {
cf2782cd 2405#ifdef DEBUGGING
f0e3f042
CS
2406 if (DEBUG_x_TEST || DEBUG_B_TEST)
2407 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2408 if (!DEBUG_q_TEST)
2409 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2410#endif
6224f72b 2411
3280af22 2412 if (PL_minus_c) {
bf49b057 2413 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2414 my_exit(0);
2415 }
3280af22 2416 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2417 PL_DBsingle_iv = 1;
9ebf26ad 2418 if (PL_initav) {
ca7b837b 2419 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2420 call_list(oldscope, PL_initav);
9ebf26ad 2421 }
f1fac472 2422#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2423 if (PL_main_root && PL_main_root->op_slabbed)
2424 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2425#endif
6224f72b
GS
2426 }
2427
2428 /* do it */
2429
ca7b837b 2430 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2431
3280af22 2432 if (PL_restartop) {
febb3a6d 2433 PL_restartjmpenv = NULL;
533c011a 2434 PL_op = PL_restartop;
3280af22 2435 PL_restartop = 0;
cea2e8a9 2436 CALLRUNOPS(aTHX);
6224f72b 2437 }
3280af22
NIS
2438 else if (PL_main_start) {
2439 CvDEPTH(PL_main_cv) = 1;
533c011a 2440 PL_op = PL_main_start;
cea2e8a9 2441 CALLRUNOPS(aTHX);
6224f72b 2442 }
f6b3007c 2443 my_exit(0);
e5964223 2444 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2445}
2446
954c1994 2447/*
ccfc67b7
JH
2448=head1 SV Manipulation Functions
2449
954c1994
GS
2450=for apidoc p||get_sv
2451
64ace3f8 2452Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2453C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2454Perl variable does not exist then it will be created. If C<flags> is zero
2455and the variable does not exist then NULL is returned.
954c1994
GS
2456
2457=cut
2458*/
2459
6224f72b 2460SV*
64ace3f8 2461Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2462{
2463 GV *gv;
7918f24d
NC
2464
2465 PERL_ARGS_ASSERT_GET_SV;
2466
64ace3f8 2467 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2468 if (gv)
2469 return GvSV(gv);
a0714e2c 2470 return NULL;
6224f72b
GS
2471}
2472
954c1994 2473/*
ccfc67b7
JH
2474=head1 Array Manipulation Functions
2475
954c1994
GS
2476=for apidoc p||get_av
2477
f0b90de1
SF
2478Returns the AV of the specified Perl global or package array with the given
2479name (so it won't work on lexical variables). C<flags> are passed
72d33970 2480to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2481Perl variable does not exist then it will be created. If C<flags> is zero
2482and the variable does not exist then NULL is returned.
954c1994 2483
f0b90de1
SF
2484Perl equivalent: C<@{"$name"}>.
2485
954c1994
GS
2486=cut
2487*/
2488
6224f72b 2489AV*
cbfd0a87 2490Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2491{
cbfd0a87 2492 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2493
2494 PERL_ARGS_ASSERT_GET_AV;
2495
cbfd0a87 2496 if (flags)
6224f72b
GS
2497 return GvAVn(gv);
2498 if (gv)
2499 return GvAV(gv);
7d49f689 2500 return NULL;
6224f72b
GS
2501}
2502
954c1994 2503/*
ccfc67b7
JH
2504=head1 Hash Manipulation Functions
2505
954c1994
GS
2506=for apidoc p||get_hv
2507
6673a63c 2508Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2509C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2510Perl variable does not exist then it will be created. If C<flags> is zero
2511and the variable does not exist then NULL is returned.
954c1994
GS
2512
2513=cut
2514*/
2515
6224f72b 2516HV*
6673a63c 2517Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2518{
6673a63c 2519 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2520
2521 PERL_ARGS_ASSERT_GET_HV;
2522
6673a63c 2523 if (flags)
a0d0e21e
LW
2524 return GvHVn(gv);
2525 if (gv)
2526 return GvHV(gv);
5c284bb0 2527 return NULL;
a0d0e21e
LW
2528}
2529
954c1994 2530/*
ccfc67b7
JH
2531=head1 CV Manipulation Functions
2532
780a5241
NC
2533=for apidoc p||get_cvn_flags
2534
2535Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2536C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2537exist then it will be declared (which has the same effect as saying
2538C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2539then NULL is returned.
2540
954c1994
GS
2541=for apidoc p||get_cv
2542
780a5241 2543Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2544
2545=cut
2546*/
2547
a0d0e21e 2548CV*
780a5241 2549Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2550{
780a5241 2551 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2552
2553 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2554
334dda80
FC
2555 /* XXX this is probably not what they think they're getting.
2556 * It has the same effect as "sub name;", i.e. just a forward
2557 * declaration! */
780a5241 2558 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2559 return newSTUB(gv,0);
780a5241 2560 }
a0d0e21e 2561 if (gv)
8ebc5c01 2562 return GvCVu(gv);
601f1833 2563 return NULL;
a0d0e21e
LW
2564}
2565
2c67934f
NC
2566/* Nothing in core calls this now, but we can't replace it with a macro and
2567 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2568CV*
2569Perl_get_cv(pTHX_ const char *name, I32 flags)
2570{
7918f24d
NC
2571 PERL_ARGS_ASSERT_GET_CV;
2572
780a5241
NC
2573 return get_cvn_flags(name, strlen(name), flags);
2574}
2575
79072805
LW
2576/* Be sure to refetch the stack pointer after calling these routines. */
2577
954c1994 2578/*
ccfc67b7
JH
2579
2580=head1 Callback Functions
2581
954c1994
GS
2582=for apidoc p||call_argv
2583
f0b90de1 2584Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2585with C<argv> (a NULL-terminated array of strings) as arguments. See
2586L<perlcall>.
f0b90de1
SF
2587
2588Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2589
2590=cut
2591*/
2592
a0d0e21e 2593I32
5aaab254 2594Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2595
8ac85365
NIS
2596 /* See G_* flags in cop.h */
2597 /* null terminated arg list */
8990e307 2598{
a0d0e21e 2599 dSP;
8990e307 2600
7918f24d
NC
2601 PERL_ARGS_ASSERT_CALL_ARGV;
2602
924508f0 2603 PUSHMARK(SP);
a0d0e21e 2604 if (argv) {
8990e307 2605 while (*argv) {
6e449a3a 2606 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2607 argv++;
2608 }
a0d0e21e 2609 PUTBACK;
8990e307 2610 }
864dbfa3 2611 return call_pv(sub_name, flags);
8990e307
LW
2612}
2613
954c1994
GS
2614/*
2615=for apidoc p||call_pv
2616
2617Performs a callback to the specified Perl sub. See L<perlcall>.
2618
2619=cut
2620*/
2621
a0d0e21e 2622I32
864dbfa3 2623Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2624 /* name of the subroutine */
2625 /* See G_* flags in cop.h */
a0d0e21e 2626{
7918f24d
NC
2627 PERL_ARGS_ASSERT_CALL_PV;
2628
0da0e728 2629 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2630}
2631
954c1994
GS
2632/*
2633=for apidoc p||call_method
2634
2635Performs a callback to the specified Perl method. The blessed object must
2636be on the stack. See L<perlcall>.
2637
2638=cut
2639*/
2640
a0d0e21e 2641I32
864dbfa3 2642Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2643 /* name of the subroutine */
2644 /* See G_* flags in cop.h */
a0d0e21e 2645{
46ca9bac 2646 STRLEN len;
c106c2be 2647 SV* sv;
7918f24d
NC
2648 PERL_ARGS_ASSERT_CALL_METHOD;
2649
46ca9bac 2650 len = strlen(methname);
c106c2be
RZ
2651 sv = flags & G_METHOD_NAMED
2652 ? sv_2mortal(newSVpvn_share(methname, len,0))
2653 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2654
c106c2be 2655 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2656}
2657
2658/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2659/*
2660=for apidoc p||call_sv
2661
2662Performs a callback to the Perl sub whose name is in the SV. See
2663L<perlcall>.
2664
2665=cut
2666*/
2667
a0d0e21e 2668I32
001d637e 2669Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2670 /* See G_* flags in cop.h */
a0d0e21e 2671{
27da23d5 2672 dVAR; dSP;
a0d0e21e 2673 LOGOP myop; /* fake syntax tree node */
b46e009d 2674 METHOP method_op;
aa689395 2675 I32 oldmark;
8ea43dc8 2676 VOL I32 retval = 0;
a0d0e21e 2677 I32 oldscope;
54310121 2678 bool oldcatch = CATCH_GET;
6224f72b 2679 int ret;
c4420975 2680 OP* const oldop = PL_op;
db36c5a1 2681 dJMPENV;
1e422769 2682
7918f24d
NC
2683 PERL_ARGS_ASSERT_CALL_SV;
2684
a0d0e21e
LW
2685 if (flags & G_DISCARD) {
2686 ENTER;
2687 SAVETMPS;
2688 }
2f8edad0
NC
2689 if (!(flags & G_WANT)) {
2690 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2691 */
2692 flags |= G_SCALAR;
2693 }
a0d0e21e 2694
aa689395 2695 Zero(&myop, 1, LOGOP);
f51d4af5 2696 if (!(flags & G_NOARGS))
aa689395 2697 myop.op_flags |= OPf_STACKED;
4f911530 2698 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2699 SAVEOP();
533c011a 2700 PL_op = (OP*)&myop;
aa689395 2701
3280af22 2702 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2703 if (!(flags & G_METHOD_NAMED))
2704 *++PL_stack_sp = sv;
aa689395 2705 oldmark = TOPMARK;
3280af22 2706 oldscope = PL_scopestack_ix;
a0d0e21e 2707
3280af22 2708 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2709 /* Handle first BEGIN of -d. */
3280af22 2710 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2711 /* Try harder, since this may have been a sighandler, thus
2712 * curstash may be meaningless. */
ea726b52 2713 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2714 && !(flags & G_NODEBUG))
5ff48db8 2715 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2716
c106c2be 2717 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2718 Zero(&method_op, 1, METHOP);
2719 method_op.op_next = (OP*)&myop;
2720 PL_op = (OP*)&method_op;
c106c2be 2721 if ( flags & G_METHOD_NAMED ) {
b46e009d 2722 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2723 method_op.op_type = OP_METHOD_NAMED;
2724 method_op.op_u.op_meth_sv = sv;
c106c2be 2725 } else {
b46e009d 2726 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2727 method_op.op_type = OP_METHOD;
c106c2be
RZ
2728 }
2729 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2730 myop.op_type = OP_ENTERSUB;
968b3946
GS
2731 }
2732
312caa8e 2733 if (!(flags & G_EVAL)) {
0cdb2077 2734 CATCH_SET(TRUE);
d6f07c05 2735 CALL_BODY_SUB((OP*)&myop);
312caa8e 2736 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2737 CATCH_SET(oldcatch);
312caa8e
CS
2738 }
2739 else {
d78bda3d 2740 myop.op_other = (OP*)&myop;
3280af22 2741 PL_markstack_ptr--;
edb2152a 2742 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2743 PL_markstack_ptr++;
a0d0e21e 2744
14dd3ad8 2745 JMPENV_PUSH(ret);
edb2152a 2746
6224f72b
GS
2747 switch (ret) {
2748 case 0:
14dd3ad8 2749 redo_body:
d6f07c05 2750 CALL_BODY_SUB((OP*)&myop);
312caa8e 2751 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2752 if (!(flags & G_KEEPERR)) {
ab69dbc2 2753 CLEAR_ERRSV();
8433848b 2754 }
a0d0e21e 2755 break;
6224f72b 2756 case 1:
f86702cc 2757 STATUS_ALL_FAILURE;
924ba076 2758 /* FALLTHROUGH */
6224f72b 2759 case 2:
a0d0e21e 2760 /* my_exit() was called */
03d9f026 2761 SET_CURSTASH(PL_defstash);
a0d0e21e 2762 FREETMPS;
14dd3ad8 2763 JMPENV_POP;
f86702cc 2764 my_exit_jump();
e5964223 2765 NOT_REACHED; /* NOTREACHED */
6224f72b 2766 case 3:
3280af22 2767 if (PL_restartop) {
febb3a6d 2768 PL_restartjmpenv = NULL;
533c011a 2769 PL_op = PL_restartop;
3280af22 2770 PL_restartop = 0;
312caa8e 2771 goto redo_body;
a0d0e21e 2772 }
3280af22 2773 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2774 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2775 retval = 0;
2776 else {
2777 retval = 1;
3280af22 2778 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2779 }
312caa8e 2780 break;
a0d0e21e 2781 }
a0d0e21e 2782
edb2152a
NC
2783 if (PL_scopestack_ix > oldscope)
2784 delete_eval_scope();
14dd3ad8 2785 JMPENV_POP;
a0d0e21e 2786 }
1e422769 2787
a0d0e21e 2788 if (flags & G_DISCARD) {
3280af22 2789 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2790 retval = 0;
2791 FREETMPS;
2792 LEAVE;
2793 }
533c011a 2794 PL_op = oldop;
a0d0e21e
LW
2795 return retval;
2796}
2797
6e72f9df 2798/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2799
954c1994
GS
2800/*
2801=for apidoc p||eval_sv
2802
72d33970
FC
2803Tells Perl to C<eval> the string in the SV. It supports the same flags
2804as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2805
2806=cut
2807*/
2808
a0d0e21e 2809I32
864dbfa3 2810Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2811
8ac85365 2812 /* See G_* flags in cop.h */
a0d0e21e 2813{
97aff369 2814 dVAR;
924508f0 2815 dSP;
a0d0e21e 2816 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2817 VOL I32 oldmark = SP - PL_stack_base;
2818 VOL I32 retval = 0;
6224f72b 2819 int ret;
c4420975 2820 OP* const oldop = PL_op;
db36c5a1 2821 dJMPENV;
84902520 2822
7918f24d
NC
2823 PERL_ARGS_ASSERT_EVAL_SV;
2824
4633a7c4
LW
2825 if (flags & G_DISCARD) {
2826 ENTER;
2827 SAVETMPS;
2828 }
2829
462e5cf6 2830 SAVEOP();
533c011a 2831 PL_op = (OP*)&myop;
5ff48db8 2832 Zero(&myop, 1, UNOP);
3280af22
NIS
2833 EXTEND(PL_stack_sp, 1);
2834 *++PL_stack_sp = sv;
79072805 2835
4633a7c4
LW
2836 if (!(flags & G_NOARGS))
2837 myop.op_flags = OPf_STACKED;
6e72f9df 2838 myop.op_type = OP_ENTEREVAL;
4f911530 2839 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2840 if (flags & G_KEEPERR)
2841 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2842
2843 if (flags & G_RE_REPARSING)
2844 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2845
dedbcade
DM
2846 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2847 * before a PUSHEVAL, which corrupts the stack after a croak */
2848 TAINT_PROPER("eval_sv()");
2849
14dd3ad8 2850 JMPENV_PUSH(ret);
6224f72b
GS
2851 switch (ret) {
2852 case 0:
14dd3ad8 2853 redo_body:
2ba65d5f
DM
2854 if (PL_op == (OP*)(&myop)) {
2855 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2856 if (!PL_op)
2857 goto fail; /* failed in compilation */
2858 }
4aca2f62 2859 CALLRUNOPS(aTHX);
312caa8e 2860 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2861 if (!(flags & G_KEEPERR)) {
ab69dbc2 2862 CLEAR_ERRSV();
8433848b 2863 }
4633a7c4 2864 break;
6224f72b 2865 case 1:
f86702cc 2866 STATUS_ALL_FAILURE;
924ba076 2867 /* FALLTHROUGH */
6224f72b 2868 case 2:
4633a7c4 2869 /* my_exit() was called */
03d9f026 2870 SET_CURSTASH(PL_defstash);
4633a7c4 2871 FREETMPS;
14dd3ad8 2872 JMPENV_POP;
f86702cc 2873 my_exit_jump();
e5964223 2874 NOT_REACHED; /* NOTREACHED */
6224f72b 2875 case 3:
3280af22 2876 if (PL_restartop) {
febb3a6d 2877 PL_restartjmpenv = NULL;
533c011a 2878 PL_op = PL_restartop;
3280af22 2879 PL_restartop = 0;
312caa8e 2880 goto redo_body;
4633a7c4 2881 }
4aca2f62 2882 fail:
3280af22 2883 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2884 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2885 retval = 0;
2886 else {
2887 retval = 1;
3280af22 2888 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2889 }
312caa8e 2890 break;
4633a7c4
LW
2891 }
2892
14dd3ad8 2893 JMPENV_POP;
4633a7c4 2894 if (flags & G_DISCARD) {
3280af22 2895 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2896 retval = 0;
2897 FREETMPS;
2898 LEAVE;
2899 }
533c011a 2900 PL_op = oldop;
4633a7c4
LW
2901 return retval;
2902}
2903
954c1994
GS
2904/*
2905=for apidoc p||eval_pv
2906
422791e4 2907Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2908
2909=cut
2910*/
2911
137443ea 2912SV*
864dbfa3 2913Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2914{
137443ea
PP
2915 SV* sv = newSVpv(p, 0);
2916
7918f24d
NC
2917 PERL_ARGS_ASSERT_EVAL_PV;
2918
864dbfa3 2919 eval_sv(sv, G_SCALAR);
137443ea
PP
2920 SvREFCNT_dec(sv);
2921
ed1786ad
DD
2922 {
2923 dSP;
2924 sv = POPs;
2925 PUTBACK;
2926 }
137443ea 2927
eed484f9
DD
2928 /* just check empty string or undef? */
2929 if (croak_on_error) {
2930 SV * const errsv = ERRSV;
2931 if(SvTRUE_NN(errsv))
2932 /* replace with croak_sv? */
2933 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2934 }
137443ea
PP
2935
2936 return sv;
2937}
2938
4633a7c4
LW
2939/* Require a module. */
2940
954c1994 2941/*
ccfc67b7
JH
2942=head1 Embedding Functions
2943
954c1994
GS
2944=for apidoc p||require_pv
2945
7d3fb230
BS
2946Tells Perl to C<require> the file named by the string argument. It is
2947analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2948implemented that way; consider using load_module instead.
954c1994 2949
7d3fb230 2950=cut */
954c1994 2951
4633a7c4 2952void
864dbfa3 2953Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2954{
d3acc0f7 2955 dSP;
97aff369 2956 SV* sv;
7918f24d
NC
2957
2958 PERL_ARGS_ASSERT_REQUIRE_PV;
2959
e788e7d3 2960 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2961 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2962 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2963 POPSTACK;
79072805
LW
2964}
2965
76e3520e 2966STATIC void
b6f82619 2967S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2968{
ab821d7f 2969 /* This message really ought to be max 23 lines.
75c72d73 2970 * Removed -h because the user already knows that option. Others? */
fb73857a 2971
1566c39d
NC
2972 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2973 minimum of 509 character string literals. */
27da23d5 2974 static const char * const usage_msg[] = {
1566c39d
NC
2975" -0[octal] specify record separator (\\0, if no argument)\n"
2976" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2977" -C[number/list] enables the listed Unicode features\n"
2978" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2979" -d[:debugger] run program under debugger\n"
2980" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2981" -e program one line of program (several -e's allowed, omit programfile)\n"
2982" -E program like -e, but enables all optional features\n"
2983" -f don't do $sitelib/sitecustomize.pl at startup\n"
2984" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2985" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2986" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2987" -l[octal] enable line ending processing, specifies line terminator\n"
2988" -[mM][-]module execute \"use/no module...\" before executing program\n"
2989" -n assume \"while (<>) { ... }\" loop around program\n"
2990" -p assume loop like -n but print line also, like sed\n"
2991" -s enable rudimentary parsing for switches after programfile\n"
2992" -S look for programfile using PATH environment variable\n",
2993" -t enable tainting warnings\n"
2994" -T enable tainting checks\n"
2995" -u dump core after parsing program\n"
2996" -U allow unsafe operations\n"
2997" -v print version, patchlevel and license\n"
2998" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2999" -w enable many useful warnings\n"
1566c39d
NC
3000" -W enable all warnings\n"
3001" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3002" -X disable all warnings\n"
3003" \n"
3004"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3005NULL
3006};
27da23d5 3007 const char * const *p = usage_msg;
1566c39d 3008 PerlIO *out = PerlIO_stdout();
fb73857a 3009
1566c39d
NC
3010 PerlIO_printf(out,
3011 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3012 PL_origargv[0]);
fb73857a 3013 while (*p)
1566c39d 3014 PerlIO_puts(out, *p++);
b6f82619 3015 my_exit(0);
4633a7c4
LW
3016}
3017
b4ab917c
DM
3018/* convert a string of -D options (or digits) into an int.
3019 * sets *s to point to the char after the options */
3020
3021#ifdef DEBUGGING
3022int
e1ec3a88 3023Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3024{
27da23d5 3025 static const char * const usage_msgd[] = {
651b8f1a
NC
3026 " Debugging flag values: (see also -d)\n"
3027 " p Tokenizing and parsing (with v, displays parse stack)\n"
3028 " s Stack snapshots (with v, displays all stacks)\n"
3029 " l Context (loop) stack processing\n"
3030 " t Trace execution\n"
3031 " o Method and overloading resolution\n",
3032 " c String/numeric conversions\n"
3033 " P Print profiling info, source file input state\n"
3034 " m Memory and SV allocation\n"
3035 " f Format processing\n"
3036 " r Regular expression parsing and execution\n"
3037 " x Syntax tree dump\n",
3038 " u Tainting checks\n"
3039 " H Hash dump -- usurps values()\n"
3040 " X Scratchpad allocation\n"
3041 " D Cleaning up\n"
56967202 3042 " S Op slab allocation\n"
651b8f1a
NC
3043 " T Tokenising\n"
3044 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3045 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3046 " v Verbose: use in conjunction with other flags\n"
3047 " C Copy On Write\n"
3048 " A Consistency checks on internal structures\n"
3049 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3050 " M trace smart match resolution\n"
3051 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3052 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3053 NULL
3054 };
22ff3130 3055 UV uv = 0;
7918f24d
NC
3056
3057 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3058
b4ab917c
DM
3059 if (isALPHA(**s)) {
3060 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3061 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3062
0eb30aeb 3063 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3064 const char * const d = strchr(debopts,**s);
b4ab917c 3065 if (d)
22ff3130 3066 uv |= 1 << (d - debopts);
b4ab917c 3067 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3068 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3069 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3070 }
3071 }
e6e64d9b 3072 else if (isDIGIT(**s)) {
96e440d2 3073 const char* e;
22ff3130 3074 if (grok_atoUV(*s, &uv, &e))
96e440d2 3075 *s = e;
0eb30aeb 3076 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3077 }
ddcf8bc1 3078 else if (givehelp) {
06e869a4 3079 const char *const *p = usage_msgd;
651b8f1a 3080 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3081 }
22ff3130 3082 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3083}
3084#endif
3085
79072805
LW
3086/* This routine handles any switches that can be given during run */
3087
c7030b81
NC
3088const char *
3089Perl_moreswitches(pTHX_ const char *s)
79072805 3090{
27da23d5 3091 dVAR;
84c133a0 3092 UV rschar;
0544e6df 3093 const char option = *s; /* used to remember option in -m/-M code */
79072805 3094
7918f24d
NC
3095 PERL_ARGS_ASSERT_MORESWITCHES;
3096
79072805
LW
3097 switch (*s) {
3098 case '0':
a863c7d1 3099 {
f2095865 3100 I32 flags = 0;
a3b680e6 3101 STRLEN numlen;
f2095865
JH
3102
3103 SvREFCNT_dec(PL_rs);
3104 if (s[1] == 'x' && s[2]) {
a3b680e6 3105 const char *e = s+=2;
f2095865
JH
3106 U8 *tmps;
3107
a3b680e6
AL
3108 while (*e)
3109 e++;
f2095865
JH
3110 numlen = e - s;
3111 flags = PERL_SCAN_SILENT_ILLDIGIT;
3112 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3113 if (s + numlen < e) {
3114 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3115 numlen = 0;
3116 s--;
3117 }
396482e1 3118 PL_rs = newSVpvs("");
c5661c80 3119 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3120 tmps = (U8*)SvPVX(PL_rs);
3121 uvchr_to_utf8(tmps, rschar);
3122 SvCUR_set(PL_rs, UNISKIP(rschar));
3123 SvUTF8_on(PL_rs);
3124 }
3125 else {
3126 numlen = 4;
3127 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3128 if (rschar & ~((U8)~0))
3129 PL_rs = &PL_sv_undef;
3130 else if (!rschar && numlen >= 2)
396482e1 3131 PL_rs = newSVpvs("");
f2095865
JH
3132 else {
3133 char ch = (char)rschar;
3134 PL_rs = newSVpvn(&ch, 1);
3135 }
3136 }
64ace3f8 3137 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3138 return s + numlen;
a863c7d1 3139 }
46487f74 3140 case 'C':
a05d7ebb 3141 s++;
dd374669 3142 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3143 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3144 PL_utf8cache = -1;
46487f74 3145 return s;
2304df62 3146 case 'F':
5fc691f1 3147 PL_minus_a = TRUE;
3280af22 3148 PL_minus_F = TRUE;
24ffa309 3149 PL_minus_n = TRUE;
ebce5377
RGS
3150 PL_splitstr = ++s;
3151 while (*s && !isSPACE(*s)) ++s;
e49e380e 3152 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3153 return s;
79072805 3154 case 'a':
3280af22 3155 PL_minus_a = TRUE;
24ffa309 3156 PL_minus_n = TRUE;
79072805
LW
3157 s++;
3158 return s;
3159 case 'c':
3280af22 3160 PL_minus_c = TRUE;
79072805
LW
3161 s++;
3162 return s;
3163 case 'd':
f20b2998 3164 forbid_setid('d', FALSE);
4633a7c4 3165 s++;
2cbb2ee1
RGS
3166
3167 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3168 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3169 ++s;
3170 my_setenv("PERL5DB_THREADED", "1");
3171 }
3172
70c94a19
RR
3173 /* The following permits -d:Mod to accepts arguments following an =
3174 in the fashion that -MSome::Mod does. */
3175 if (*s == ':' || *s == '=') {
b19934fb
NC
3176 const char *start;
3177 const char *end;
3178 SV *sv;
3179
3180 if (*++s == '-') {
3181 ++s;
3182 sv = newSVpvs("no Devel::");
3183 } else {
3184 sv = newSVpvs("use Devel::");
3185 }
3186
3187 start = s;
3188 end = s + strlen(s);
f85893a1 3189
b19934fb 3190 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3191 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3192 if (*s != '=')
f85893a1 3193 sv_catpvn(sv, start, end - start);
70c94a19
RR
3194 else {
3195 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3196 /* Don't use NUL as q// delimiter here, this string goes in the
3197 * environment. */
3198 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3199 }
f85893a1 3200 s = end;
184f32ec 3201 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3202 SvREFCNT_dec(sv);
4633a7c4 3203 }
ed094faf 3204 if (!PL_perldb) {
3280af22 3205 PL_perldb = PERLDB_ALL;
a0d0e21e 3206 init_debugger();
ed094faf 3207 }
79072805
LW
3208 return s;
3209 case 'D':
0453d815 3210 {
79072805 3211#ifdef DEBUGGING
f20b2998 3212 forbid_setid('D', FALSE);
b4ab917c 3213 s++;
dd374669 3214 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3215#else /* !DEBUGGING */
0453d815 3216 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3217 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3218 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3219 for (s++; isWORDCHAR(*s); s++) ;
79072805 3220#endif
79072805 3221 return s;
2b5060ae 3222 NOT_REACHED; /* NOTREACHED */
0453d815 3223 }
4633a7c4 3224 case 'h':
b6f82619 3225 usage();
2b5060ae
DM
3226 NOT_REACHED; /* NOTREACHED */
3227
79072805 3228 case 'i':
43c5f42d 3229 Safefree(PL_inplace);
c030f24b
GH
3230#if defined(__CYGWIN__) /* do backup extension automagically */
3231 if (*(s+1) == '\0') {
c86a4f2e 3232 PL_inplace = savepvs(".bak");
c030f24b
GH
3233 return s+1;
3234 }
3235#endif /* __CYGWIN__ */
5ef5d758 3236 {
d4c19fe8 3237 const char * const start = ++s;
5ef5d758
NC
3238 while (*s && !isSPACE(*s))
3239 ++s;
3240
3241 PL_inplace = savepvn(start, s - start);
3242 }
7b8d334a 3243 if (*s) {
5ef5d758 3244 ++s;
7b8d334a 3245 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3246 s++;
7b8d334a 3247 }
fb73857a 3248 return s;
4e49a025 3249 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3250 forbid_setid('I', FALSE);
fb73857a
PP
3251 ++s;
3252 while (*s && isSPACE(*s))
3253 ++s;
3254 if (*s) {
c7030b81 3255 const char *e, *p;
0df16ed7
GS
3256 p = s;
3257 /* ignore trailing spaces (possibly followed by other switches) */
3258 do {
3259 for (e = p; *e && !isSPACE(*e); e++) ;
3260 p = e;
3261 while (isSPACE(*p))
3262 p++;
3263 } while (*p && *p != '-');
55b4bc1c 3264 incpush(s, e-s,
e28f3139 3265 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3266 s = p;
3267 if (*s == '-')
3268 s++;
79072805
LW
3269 }
3270 else
a67e862a 3271 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3272 return s;
79072805 3273 case 'l':
3280af22 3274 PL_minus_l = TRUE;
79072805 3275 s++;
7889fe52
NIS
3276 if (PL_ors_sv) {
3277 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3278 PL_ors_sv = NULL;
7889fe52 3279 }
79072805 3280 if (isDIGIT(*s)) {
53305cf1 3281 I32 flags = 0;
a3b680e6 3282 STRLEN numlen;
396482e1 3283 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3284 numlen = 3 + (*s == '0');
3285 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3286 s += numlen;
3287 }
3288 else {
8bfdd7d9 3289 if (RsPARA(PL_rs)) {
396482e1 3290 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3291 }
3292 else {
8bfdd7d9 3293 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3294 }
79072805
LW
3295 }
3296 return s;
1a30305b 3297 case 'M':
f20b2998 3298 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3299 /* FALLTHROUGH */
1a30305b 3300 case 'm':
f20b2998 3301 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3302 if (*++s) {
c7030b81 3303 const char *start;
b64cb68c 3304 const char *end;
11343788 3305 SV *sv;
e1ec3a88 3306 const char *use = "use ";
0544e6df 3307 bool colon = FALSE;
a5f75d66 3308 /* -M-foo == 'no foo' */
d0043bd1
NC
3309 /* Leading space on " no " is deliberate, to make both
3310 possibilities the same length. */
3311 if (*s == '-') { use = " no "; ++s; }
3312 sv = newSVpvn(use,4);
a5f75d66 3313 start = s;
1a30305b 3314 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3315 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3316 if( *s++ == ':' ) {
3317 if( *s == ':' )
3318 s++;
3319 else
3320 colon = TRUE;
3321 }
3322 }
3323 if (s == start)
3324 Perl_croak(aTHX_ "Module name required with -%c option",
3325 option);
3326 if (colon)
3327 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3328 "contains single ':'",
63da6837 3329 (int)(s - start), start, option);
b64cb68c 3330 end = s + strlen(s);
c07a80fd 3331 if (*s != '=') {
b64cb68c 3332 sv_catpvn(sv, start, end - start);
0544e6df 3333 if (option == 'm') {
c07a80fd 3334 if (*s != '\0')
cea2e8a9 3335 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3336 sv_catpvs( sv, " ()");
c07a80fd
PP
3337 }
3338 } else {
11343788 3339 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3340 /* Use NUL as q''-delimiter. */
3341 sv_catpvs(sv, " split(/,/,q\0");
3342 ++s;
3343 sv_catpvn(sv, s, end - s);
396482e1 3344 sv_catpvs(sv, "\0)");
c07a80fd 3345 }
b64cb68c 3346 s = end;
29a861e7 3347 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3348 }
3349 else
0544e6df 3350 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3351 return s;
79072805 3352 case 'n':
3280af22 3353 PL_minus_n = TRUE;
79072805
LW
3354 s++;
3355 return s;
3356 case 'p':
3280af22 3357 PL_minus_p = TRUE;
79072805
LW
3358 s++;
3359 return s;
3360 case 's':
f20b2998 3361 forbid_setid('s', FALSE);
3280af22 3362 PL_doswitches = TRUE;
79072805
LW
3363 s++;
3364 return s;
6537fe72 3365 case 't':
27a6968b 3366 case 'T':
dc6d7f5c 3367#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3368 /* silently ignore */
dc6d7f5c 3369#elif defined(NO_TAINT_SUPPORT)
3231f579 3370 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3371 "Cowardly refusing to run with -t or -T flags");
3372#else
3373 if (!TAINTING_get)
27a6968b 3374 TOO_LATE_FOR(*s);
284167a5 3375#endif
6537fe72 3376 s++;
463ee0b2 3377 return s;
79072805 3378 case 'u':
3280af22 3379 PL_do_undump = TRUE;
79072805
LW
3380 s++;
3381 return s;
3382 case 'U':
3280af22 3383 PL_unsafe = TRUE;
79072805
LW
3384 s++;
3385 return s;
3386 case 'v':
c4bc78d9
NC
3387 minus_v();
3388 case 'w':
3389 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3390 PL_dowarn |= G_WARN_ON;
3391 }
3392 s++;
3393 return s;
3394 case 'W':
3395 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3396 if (!specialWARN(PL_compiling.cop_warnings))
3397 PerlMemShared_free(PL_compiling.cop_warnings);
3398 PL_compiling.cop_warnings = pWARN_ALL ;
3399 s++;
3400 return s;
3401 case 'X':
3402 PL_dowarn = G_WARN_ALL_OFF;
3403 if (!specialWARN(PL_compiling.cop_warnings))
3404 PerlMemShared_free(PL_compiling.cop_warnings);
3405 PL_compiling.cop_warnings = pWARN_NONE ;
3406 s++;
3407 return s;
3408 case '*':
3409 case ' ':
3410 while( *s == ' ' )
3411 ++s;
3412 if (s[0] == '-') /* Additional switches on #! line. */
3413 return s+1;
3414 break;
3415 case '-':
3416 case 0:
3417#if defined(WIN32) || !defined(PERL_STRICT_CR)
3418 case '\r':
3419#endif
3420 case '\n':
3421 case '\t':
3422 break;
3423#ifdef ALTERNATE_SHEBANG
3424 case 'S': /* OS/2 needs -S on "extproc" line. */
3425 break;
3426#endif
4bb78d63
CB
3427 case 'e': case 'f': case 'x': case 'E':
3428#ifndef ALTERNATE_SHEBANG
3429 case 'S':
3430#endif
3431 case 'V':
c4bc78d9 3432 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3433 default:
3434 Perl_croak(aTHX_
3435 "Unrecognized switch: -%.1s (-h will show valid options)",s
3436 );
c4bc78d9
NC
3437 }
3438 return NULL;
3439}
3440
3441
3442STATIC void
3443S_minus_v(pTHX)
3444{
fc3381af 3445 PerlIO * PIO_stdout;
46807d8e 3446 {
709aee94
DD
3447 const char * const level_str = "v" PERL_VERSION_STRING;
3448 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3449#ifdef PERL_PATCHNUM
709aee94 3450 SV* level;
23d483e2 3451# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3452 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3453# else
709aee94 3454 static const char num [] = PERL_PATCHNUM;
23d483e2 3455# endif
fc3381af 3456 {
709aee94
DD
3457 const STRLEN num_len = sizeof(num)-1;
3458 /* A very advanced compiler would fold away the strnEQ
3459 and this whole conditional, but most (all?) won't do it.
3460 SV level could also be replaced by with preprocessor
3461 catenation.
3462 */
3463 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3464 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3465 of the interp so it might contain format characters
3466 */
3467 level = newSVpvn(num, num_len);
fc3381af 3468 } else {
709aee94 3469 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3470 }
46807d8e 3471 }
709aee94
DD
3472#else
3473 SV* level = newSVpvn(level_str, level_len);
3474#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3475 PIO_stdout = PerlIO_stdout();
3476 PerlIO_printf(PIO_stdout,
ded326e4
DG
3477 "\nThis is perl " STRINGIFY(PERL_REVISION)
3478 ", version " STRINGIFY(PERL_VERSION)
3479 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3480 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3481 );
709aee94 3482 SvREFCNT_dec