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[perl #123814] stricter handling of numbers in regexp quantifiers
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2aa47728 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
42# ifdef I_SYSUIO
43# include <sys/uio.h>
44# endif
45
46union control_un {
47 struct cmsghdr cm;
48 char control[CMSG_SPACE(sizeof(int))];
49};
50
2aa47728
NC
51#endif
52
5311654c
JH
53#ifndef HZ
54# ifdef CLK_TCK
55# define HZ CLK_TCK
56# else
57# define HZ 60
58# endif
59#endif
60
7114a2d2 61#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 62char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL
73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC
87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC
90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
71ad1b0c 95 HINTS_REFCNT_INIT;
e6827a76 96 MUTEX_INIT(&PL_dollarzero_mutex);
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 {
553 i = grok_atou(s, NULL);
554 }
36e77d41
DD
555#ifdef DEBUGGING
556 if (destruct_level < i) destruct_level = i;
557#endif
558#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
36e77d41 561#endif
5f05dabc 562 }
4633a7c4
LW
563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
9ebf26ad 572 if (PL_endav && !PL_minus_c) {
ca7b837b 573 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 574 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 575 }
f3faeb53 576 JMPENV_POP;
26f423df 577 }
f3faeb53 578 LEAVE;
a0d0e21e 579 FREETMPS;
3d22c4f0 580 assert(PL_scopestack_ix == 0);
a0d0e21e 581
e00b64d4 582 /* Need to flush since END blocks can produce output */
f13a2bc0 583 my_fflush_all();
e00b64d4 584
75d476e2
SM
585#ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
591 }
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
596#endif
597
598
16c91539 599 if (PL_threadhook(aTHX)) {
62375a60 600 /* Threads hook has vetoed further cleanup */
c301d606 601 PL_veto_cleanup = TRUE;
37038d91 602 return STATUS_EXIT;
62375a60
NIS
603 }
604
2aa47728
NC
605#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
611 fail gracefully */
612 int fd[2];
613
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
616 abort();
617 }
618
619 child = fork();
620 if(child == -1) {
621 perror("Debug leaking scalars fork failed");
622 abort();
623 }
624 if (!child) {
625 /* We are the child */
3125a5a4
NC
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
628 int f;
808ad2d0
NC
629 const char *where;
630 /* Our success message is an integer 0, and a char 0 */
b61433a9 631 static const char success[sizeof(int) + 1] = {0};
3125a5a4 632
2aa47728 633 close(fd[0]);
2aa47728 634
3125a5a4
NC
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
bf357333
NC
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
646
647 f = sysconf(_SC_OPEN_MAX);
648 if(f < 0) {
808ad2d0
NC
649 where = "sysconf failed";
650 goto abort;
3125a5a4
NC
651 }
652 while (f--) {
653 if (f == sock)
654 continue;
3125a5a4
NC
655 close(f);
656 }
657
2aa47728
NC
658 while (1) {
659 SV *target;
bf357333
NC
660 union control_un control;
661 struct msghdr msg;
662 struct iovec vec[1];
663 struct cmsghdr *cmptr;
664 ssize_t got;
665 int got_fd;
666
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
670 msg.msg_name = NULL;
671 msg.msg_namelen = 0;
672 msg.msg_iov = vec;
c3caa5c3 673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
674
675 vec[0].iov_base = (void*)&target;
676 vec[0].iov_len = sizeof(target);
677
678 got = recvmsg(sock, &msg, 0);
2aa47728
NC
679
680 if(got == 0)
681 break;
682 if(got < 0) {
808ad2d0
NC
683 where = "recv failed";
684 goto abort;
2aa47728
NC
685 }
686 if(got < sizeof(target)) {
808ad2d0
NC
687 where = "short recv";
688 goto abort;
2aa47728 689 }
bf357333 690
808ad2d0
NC
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
692 where = "no cmsg";
693 goto abort;
694 }
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
697 goto abort;
698 }
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
701 goto abort;
702 }
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
705 goto abort;
706 }
bf357333
NC
707
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
711 */
808ad2d0
NC
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
714 where = "dup2";
715 goto abort;
716 }
717 }
2aa47728 718 sv_dump(target);
bf357333 719
2aa47728
NC
720 PerlIO_flush(Perl_debug_log);
721
808ad2d0 722 got = write(sock, &success, sizeof(success));
2aa47728
NC
723
724 if(got < 0) {
808ad2d0
NC
725 where = "write failed";
726 goto abort;
2aa47728 727 }
808ad2d0
NC
728 if(got < sizeof(success)) {
729 where = "short write";
730 goto abort;
2aa47728
NC
731 }
732 }
733 _exit(0);
808ad2d0
NC
734 abort:
735 {
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
740 {&length, 1},
741 {(void*)where, length}
742 };
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
748 reading the data. */
749 sleep(2);
750 _exit((got == -1) ? errno : 0);
751 }
bf357333 752 /* End of child. */
2aa47728 753 }
41e4abd8 754 PL_dumper_fd = fd[0];
2aa47728
NC
755 close(fd[1]);
756 }
757#endif
758
ff0cee69
PP
759 /* We must account for everything. */
760
761 /* Destroy the main CV and syntax tree */
37e77c23
FC
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
17fbfdf6 766 PL_curcop = &PL_compiling;
3280af22 767 if (PL_main_root) {
4e380990
DM
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 772 }
3280af22 773 op_free(PL_main_root);
5f66b61c 774 PL_main_root = NULL;
a0d0e21e 775 }
5f66b61c 776 PL_main_start = NULL;
aac9d523
DM
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
3280af22 781 SvREFCNT_dec(PL_main_cv);
601f1833 782 PL_main_cv = NULL;
ca7b837b 783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 784
13621cfb
NIS
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
787 be cleaned up now.
788 */
789
790 PerlIO_destruct(aTHX);
791
ddf23d4a
SM
792 /*
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
796 */
797 sv_clean_objs();
8990e307 798
5cd24f17 799 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 800 SvREFCNT_dec(PL_warnhook);
a0714e2c 801 PL_warnhook = NULL;
3280af22 802 SvREFCNT_dec(PL_diehook);
a0714e2c 803 PL_diehook = NULL;
5cd24f17 804
4b556e6c 805 /* call exit list functions */
3280af22 806 while (PL_exitlistlen-- > 0)
acfe0abc 807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 808
3280af22 809 Safefree(PL_exitlist);
4b556e6c 810
1c4916e5
CB
811 PL_exitlist = NULL;
812 PL_exitlistlen = 0;
813
a3e6e81e
NC
814 SvREFCNT_dec(PL_registered_mros);
815
551a8b83 816 /* jettison our possibly duplicated environment */
4b647fb0
DM
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
819 */
2f42fcb0 820#ifndef PERL_MICRO
4b647fb0 821#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 822 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
823#ifdef USE_ITHREADS
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
826#endif
827 )
828 {
551a8b83
JH
829 I32 i;
830
831 for (i = 0; environ[i]; i++)
4b420006 832 safesysfree(environ[i]);
0631ea03 833
4b420006
JH
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
551a8b83
JH
836
837 environ = PL_origenviron;
838 }
839#endif
2f42fcb0 840#endif /* !PERL_MICRO */
551a8b83 841
30985c42
JH
842 if (destruct_level == 0) {
843
844 DEBUG_P(debprofdump());
845
846#if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
849#endif
850
851 CopFILE_free(&PL_compiling);
30985c42
JH
852
853 /* The exit() function will do everything that needs doing. */
854 return STATUS_EXIT;
855 }
856
9fa9f06b
KW
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
858
5f8cb046
DM
859#ifdef USE_ITHREADS
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
864 */
0547a729
DM
865 {
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
868
869 for (; i; i--) {
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
872 }
873 }
5f8cb046
DM
874#endif
875
0547a729 876
ad64d0ec 877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
878 PL_stashcache = NULL;
879
5f05dabc
PP
880 /* loosen bonds of global variables */
881
2f9285f8
DM
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
8ebc5c01
PP
886 }
887
84386e14
RGS
888 if (PL_minus_F) {
889 Safefree(PL_splitstr);
890 PL_splitstr = NULL;
891 }
892
8ebc5c01 893 /* switches */
3280af22
NIS
894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
1a904fc8 901#ifdef PERL_SAWAMPERSAND
d3b97530 902 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 903#endif
3280af22
NIS
904 PL_unsafe = FALSE;
905
906 Safefree(PL_inplace);
bd61b366 907 PL_inplace = NULL;
a7cb1f99 908 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
909
910 if (PL_e_script) {
911 SvREFCNT_dec(PL_e_script);
a0714e2c 912 PL_e_script = NULL;
8ebc5c01
PP
913 }
914
bf9cdc68
RG
915 PL_perldb = 0;
916
8ebc5c01
PP
917 /* magical thingies */
918
e23d9e2f
CS
919 SvREFCNT_dec(PL_ofsgv); /* *, */
920 PL_ofsgv = NULL;
5f05dabc 921
7889fe52 922 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 923 PL_ors_sv = NULL;
8ebc5c01 924
3280af22 925 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 926 PL_rs = NULL;
dc92893f 927
d33b2eba 928 Safefree(PL_osname); /* $^O */
bd61b366 929 PL_osname = NULL;
5f05dabc 930
3280af22 931 SvREFCNT_dec(PL_statname);
a0714e2c
SS
932 PL_statname = NULL;
933 PL_statgv = NULL;
5f05dabc 934
8ebc5c01
PP
935 /* defgv, aka *_ should be taken care of elsewhere */
936
7d5ea4e7
GS
937 /* float buffer */
938 Safefree(PL_efloatbuf);
bd61b366 939 PL_efloatbuf = NULL;
7d5ea4e7
GS
940 PL_efloatsize = 0;
941
8ebc5c01 942 /* startup and shutdown function lists */
3280af22 943 SvREFCNT_dec(PL_beginav);
5a837c8f 944 SvREFCNT_dec(PL_beginav_save);
3280af22 945 SvREFCNT_dec(PL_endav);
7d30b5c4 946 SvREFCNT_dec(PL_checkav);
ece599bd 947 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
948 SvREFCNT_dec(PL_unitcheckav);
949 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 950 SvREFCNT_dec(PL_initav);
7d49f689
NC
951 PL_beginav = NULL;
952 PL_beginav_save = NULL;
953 PL_endav = NULL;
954 PL_checkav = NULL;
955 PL_checkav_save = NULL;
3c10abe3
AG
956 PL_unitcheckav = NULL;
957 PL_unitcheckav_save = NULL;
7d49f689 958 PL_initav = NULL;
5618dfe8 959
8ebc5c01 960 /* shortcuts just get cleared */
a0714e2c
SS
961 PL_hintgv = NULL;
962 PL_errgv = NULL;
a0714e2c
SS
963 PL_argvoutgv = NULL;
964 PL_stdingv = NULL;
965 PL_stderrgv = NULL;
966 PL_last_in_gv = NULL;
a0714e2c
SS
967 PL_DBsingle = NULL;
968 PL_DBtrace = NULL;
969 PL_DBsignal = NULL;
a6d69523
TC
970 PL_DBsingle_iv = 0;
971 PL_DBtrace_iv = 0;
972 PL_DBsignal_iv = 0;
601f1833 973 PL_DBcv = NULL;
7d49f689 974 PL_dbargs = NULL;
5c284bb0 975 PL_debstash = NULL;
8ebc5c01 976
cf93a474 977 SvREFCNT_dec(PL_envgv);
f03015cd 978 SvREFCNT_dec(PL_incgv);
722fa0e9 979 SvREFCNT_dec(PL_argvgv);
475b1e90 980 SvREFCNT_dec(PL_replgv);
8cece913
FC
981 SvREFCNT_dec(PL_DBgv);
982 SvREFCNT_dec(PL_DBline);
983 SvREFCNT_dec(PL_DBsub);
cf93a474 984 PL_envgv = NULL;
f03015cd 985 PL_incgv = NULL;
722fa0e9 986 PL_argvgv = NULL;
475b1e90 987 PL_replgv = NULL;
8cece913
FC
988 PL_DBgv = NULL;
989 PL_DBline = NULL;
990 PL_DBsub = NULL;
991
7a1c5554 992 SvREFCNT_dec(PL_argvout_stack);
7d49f689 993 PL_argvout_stack = NULL;
8ebc5c01 994
5c831c24 995 SvREFCNT_dec(PL_modglobal);
5c284bb0 996 PL_modglobal = NULL;
5c831c24 997 SvREFCNT_dec(PL_preambleav);
7d49f689 998 PL_preambleav = NULL;
5c831c24 999 SvREFCNT_dec(PL_subname);
a0714e2c 1000 PL_subname = NULL;
ca0c25f6 1001#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1002 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1003 PL_pidstatus = NULL;
ca0c25f6 1004#endif
5c831c24 1005 SvREFCNT_dec(PL_toptarget);
a0714e2c 1006 PL_toptarget = NULL;
5c831c24 1007 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1008 PL_bodytarget = NULL;
1009 PL_formtarget = NULL;
5c831c24 1010
d33b2eba 1011 /* free locale stuff */
b9582b6a 1012#ifdef USE_LOCALE_COLLATE
d33b2eba 1013 Safefree(PL_collation_name);
bd61b366 1014 PL_collation_name = NULL;
b9582b6a 1015#endif
d33b2eba 1016
b9582b6a 1017#ifdef USE_LOCALE_NUMERIC
d33b2eba 1018 Safefree(PL_numeric_name);
bd61b366 1019 PL_numeric_name = NULL;
a453c169 1020 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1021 PL_numeric_radix_sv = NULL;
b9582b6a 1022#endif
d33b2eba 1023
9c0b6888
KW
1024 /* clear character classes */
1025 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1026 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1027 PL_utf8_swash_ptrs[i] = NULL;
1028 }
5c831c24
GS
1029 SvREFCNT_dec(PL_utf8_mark);
1030 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1031 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1032 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1033 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1034 SvREFCNT_dec(PL_utf8_idstart);
1035 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1036 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1037 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1038 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1039 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1040 SvREFCNT_dec(PL_UpperLatin1);
1041 SvREFCNT_dec(PL_Latin1);
1042 SvREFCNT_dec(PL_NonL1NonFinalFold);
1043 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1044#ifdef USE_LOCALE_CTYPE
780fcc9f 1045 SvREFCNT_dec(PL_warn_locale);
5b7de470 1046#endif
a0714e2c
SS
1047 PL_utf8_mark = NULL;
1048 PL_utf8_toupper = NULL;
1049 PL_utf8_totitle = NULL;
1050 PL_utf8_tolower = NULL;
1051 PL_utf8_tofold = NULL;
1052 PL_utf8_idstart = NULL;
1053 PL_utf8_idcont = NULL;
2726813d 1054 PL_utf8_foldclosures = NULL;
9fa9f06b 1055 PL_AboveLatin1 = NULL;
e0a1ff7a 1056 PL_InBitmap = NULL;
9fa9f06b 1057 PL_HasMultiCharFold = NULL;
5b7de470 1058#ifdef USE_LOCALE_CTYPE
780fcc9f 1059 PL_warn_locale = NULL;
5b7de470 1060#endif
9fa9f06b
KW
1061 PL_Latin1 = NULL;
1062 PL_NonL1NonFinalFold = NULL;
1063 PL_UpperLatin1 = NULL;
86f72d56 1064 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1065 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1066 PL_XPosix_ptrs[i] = NULL;
86f72d56 1067 }
64935bc6 1068 PL_GCB_invlist = NULL;
06ae2722 1069 PL_SB_invlist = NULL;
ae3bb8ea 1070 PL_WB_invlist = NULL;
5c831c24 1071
971a9dd3 1072 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1073 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1074 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1075 cophh_free(CopHINTHASH_get(&PL_compiling));
1076 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1077 CopFILE_free(&PL_compiling);
5c831c24 1078
a0d0e21e 1079 /* Prepare to destruct main symbol table. */
5f05dabc 1080
3280af22 1081 hv = PL_defstash;
ca556bcd
DM
1082 /* break ref loop *:: <=> %:: */
1083 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1084 PL_defstash = 0;
a0d0e21e 1085 SvREFCNT_dec(hv);
5c831c24 1086 SvREFCNT_dec(PL_curstname);
a0714e2c 1087 PL_curstname = NULL;
a0d0e21e 1088
5a844595
GS
1089 /* clear queued errors */
1090 SvREFCNT_dec(PL_errors);
a0714e2c 1091 PL_errors = NULL;
5a844595 1092
dd69841b
BB
1093 SvREFCNT_dec(PL_isarev);
1094
a0d0e21e 1095 FREETMPS;
9b387841 1096 if (destruct_level >= 2) {
3280af22 1097 if (PL_scopestack_ix != 0)
9b387841
NC
1098 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1099 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1100 (long)PL_scopestack_ix);
3280af22 1101 if (PL_savestack_ix != 0)
9b387841
NC
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced saves: %ld more saves than restores\n",
1104 (long)PL_savestack_ix);
3280af22 1105 if (PL_tmps_floor != -1)
9b387841
NC
1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1107 (long)PL_tmps_floor + 1);
a0d0e21e 1108 if (cxstack_ix != -1)
9b387841
NC
1109 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1110 (long)cxstack_ix + 1);
a0d0e21e 1111 }
8990e307 1112
0547a729
DM
1113#ifdef USE_ITHREADS
1114 SvREFCNT_dec(PL_regex_padav);
1115 PL_regex_padav = NULL;
1116 PL_regex_pad = NULL;
1117#endif
1118
776df701 1119#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1120 /* the entries in this list are allocated via SV PVX's, so get freed
1121 * in sv_clean_all */
1122 Safefree(PL_my_cxt_list);
776df701 1123#endif
57bb2458 1124
8990e307 1125 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1126
1127 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1128 while (sv_clean_all() > 2)
5226ed68
JH
1129 ;
1130
23083432
FC
1131#ifdef USE_ITHREADS
1132 Safefree(PL_stashpad); /* must come after sv_clean_all */
1133#endif
1134
d4777f27
GS
1135 AvREAL_off(PL_fdpid); /* no surviving entries */
1136 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1137 PL_fdpid = NULL;
d33b2eba 1138
6c644e78
GS
1139#ifdef HAVE_INTERP_INTERN
1140 sys_intern_clear();
1141#endif
1142
a38ab475
RZ
1143 /* constant strings */
1144 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1145 SvREFCNT_dec(PL_sv_consts[i]);
1146 PL_sv_consts[i] = NULL;
1147 }
1148
6e72f9df
PP
1149 /* Destruct the global string table. */
1150 {
1151 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1152 * so that sv_free() won't fail on them.
80459961
NC
1153 * Now that the global string table is using a single hunk of memory
1154 * for both HE and HEK, we either need to explicitly unshare it the
1155 * correct way, or actually free things here.
6e72f9df 1156 */
80459961
NC
1157 I32 riter = 0;
1158 const I32 max = HvMAX(PL_strtab);
c4420975 1159 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1160 HE *hent = array[0];
1161
6e72f9df 1162 for (;;) {
0453d815 1163 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1164 HE * const next = HeNEXT(hent);
9014280d 1165 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1166 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1167 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1168 Safefree(hent);
1169 hent = next;
6e72f9df
PP
1170 }
1171 if (!hent) {
1172 if (++riter > max)
1173 break;
1174 hent = array[riter];
1175 }
1176 }
80459961
NC
1177
1178 Safefree(array);
1179 HvARRAY(PL_strtab) = 0;
1180 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1181 }
3280af22 1182 SvREFCNT_dec(PL_strtab);
6e72f9df 1183
e652bb2f 1184#ifdef USE_ITHREADS
c21d1a0f 1185 /* free the pointer tables used for cloning */
a0739874 1186 ptr_table_free(PL_ptr_table);
bf9cdc68 1187 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1188#endif
a0739874 1189
d33b2eba
GS
1190 /* free special SVs */
1191
1192 SvREFCNT(&PL_sv_yes) = 0;
1193 sv_clear(&PL_sv_yes);
1194 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1195 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1196
1197 SvREFCNT(&PL_sv_no) = 0;
1198 sv_clear(&PL_sv_no);
1199 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1200 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1201
9f375a43
DM
1202 {
1203 int i;
1204 for (i=0; i<=2; i++) {
1205 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1206 sv_clear(PERL_DEBUG_PAD(i));
1207 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1208 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1209 }
1210 }
1211
0453d815 1212 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1213 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1214
eba0f806
DM
1215#ifdef DEBUG_LEAKING_SCALARS
1216 if (PL_sv_count != 0) {
1217 SV* sva;
1218 SV* sv;
eb578fdb 1219 SV* svend;
eba0f806 1220
ad64d0ec 1221 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1222 svend = &sva[SvREFCNT(sva)];
1223 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1224 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1225 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1226 " flags=0x%"UVxf
fd0854ff 1227 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1228 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1229 "serial %"UVuf"\n",
574b8821
NC
1230 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1231 pTHX__VALUE,
fd0854ff
DM
1232 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1233 sv->sv_debug_line,
1234 sv->sv_debug_inpad ? "for" : "by",
1235 sv->sv_debug_optype ?
1236 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1237 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1238 sv->sv_debug_serial
fd0854ff 1239 );
2aa47728 1240#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1241 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1242#endif
eba0f806
DM
1243 }
1244 }
1245 }
1246 }
2aa47728
NC
1247#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1248 {
1249 int status;
1250 fd_set rset;
1251 /* Wait for up to 4 seconds for child to terminate.
1252 This seems to be the least effort way of timing out on reaping
1253 its exit status. */
1254 struct timeval waitfor = {4, 0};
41e4abd8 1255 int sock = PL_dumper_fd;
2aa47728
NC
1256
1257 shutdown(sock, 1);
1258 FD_ZERO(&rset);
1259 FD_SET(sock, &rset);
1260 select(sock + 1, &rset, NULL, NULL, &waitfor);
1261 waitpid(child, &status, WNOHANG);
1262 close(sock);
1263 }
1264#endif
eba0f806 1265#endif
77abb4c6
NC
1266#ifdef DEBUG_LEAKING_SCALARS_ABORT
1267 if (PL_sv_count)
1268 abort();
1269#endif
bf9cdc68 1270 PL_sv_count = 0;
eba0f806 1271
56a2bab7 1272#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1273 /* No more IO - including error messages ! */
1274 PerlIO_cleanup(aTHX);
1275#endif
1276
9f4bd222 1277 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1278 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1279 for no arg - and will try and SvREFCNT_dec it.
1280 */
1281 SvREFCNT(&PL_sv_undef) = 0;
1282 SvREADONLY_off(&PL_sv_undef);
1283
3280af22 1284 Safefree(PL_origfilename);
bd61b366 1285 PL_origfilename = NULL;
43c5f42d 1286 Safefree(PL_reg_curpm);
dd28f7bb 1287 free_tied_hv_pool();
3280af22 1288 Safefree(PL_op_mask);
cf36064f 1289 Safefree(PL_psig_name);
bf9cdc68 1290 PL_psig_name = (SV**)NULL;
d525a7b2 1291 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1292 {
1293 /* We need to NULL PL_psig_pend first, so that
1294 signal handlers know not to use it */
1295 int *psig_save = PL_psig_pend;
1296 PL_psig_pend = (int*)NULL;
1297 Safefree(psig_save);
1298 }
6e72f9df 1299 nuke_stacks();
284167a5
SM
1300 TAINTING_set(FALSE);
1301 TAINT_WARN_set(FALSE);
3280af22 1302 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1303
a0d0e21e 1304 DEBUG_P(debprofdump());
d33b2eba 1305
b173165c
FC
1306 PL_debug = 0;
1307
e5dd39fc 1308#ifdef USE_REENTRANT_API
10bc17b6 1309 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1310#endif
1311
612f20c3
GS
1312 sv_free_arenas();
1313
5d9a96ca
DM
1314 while (PL_regmatch_slab) {
1315 regmatch_slab *s = PL_regmatch_slab;
1316 PL_regmatch_slab = PL_regmatch_slab->next;
1317 Safefree(s);
1318 }
1319
fc36a67e
PP
1320 /* As the absolutely last thing, free the non-arena SV for mess() */
1321
3280af22 1322 if (PL_mess_sv) {
f350b448
NC
1323 /* we know that type == SVt_PVMG */
1324
9c63abab 1325 /* it could have accumulated taint magic */
f350b448
NC
1326 MAGIC* mg;
1327 MAGIC* moremagic;
1328 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1329 moremagic = mg->mg_moremagic;
1330 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1331 && mg->mg_len >= 0)
1332 Safefree(mg->mg_ptr);
1333 Safefree(mg);
9c63abab 1334 }
f350b448 1335
fc36a67e 1336 /* we know that type >= SVt_PV */
8bd4d4c5 1337 SvPV_free(PL_mess_sv);
3280af22
NIS
1338 Safefree(SvANY(PL_mess_sv));
1339 Safefree(PL_mess_sv);
a0714e2c 1340 PL_mess_sv = NULL;
fc36a67e 1341 }
37038d91 1342 return STATUS_EXIT;
79072805
LW
1343}
1344
954c1994
GS
1345/*
1346=for apidoc perl_free
1347
1348Releases a Perl interpreter. See L<perlembed>.
1349
1350=cut
1351*/
1352
79072805 1353void
0cb96387 1354perl_free(pTHXx)
79072805 1355{
5174512c
NC
1356 dVAR;
1357
7918f24d
NC
1358 PERL_ARGS_ASSERT_PERL_FREE;
1359
c301d606
DM
1360 if (PL_veto_cleanup)
1361 return;
1362
7cb608b5 1363#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1364 {
1365 /*
1366 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1367 * value as we're probably hunting memory leaks then
1368 */
36e77d41 1369 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1370 const U32 old_debug = PL_debug;
55ef9aae
MHM
1371 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1372 thread at thread exit. */
4fd0a9b8
NC
1373 if (DEBUG_m_TEST) {
1374 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1375 "free this thread's memory\n");
1376 PL_debug &= ~ DEBUG_m_FLAG;
1377 }
6edcbed6
DD
1378 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1379 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1380 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1381 safesysfree(ptr);
1382 }
4fd0a9b8 1383 PL_debug = old_debug;
55ef9aae
MHM
1384 }
1385 }
7cb608b5
NC
1386#endif
1387
acfe0abc 1388#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1389# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1390 {
acfe0abc 1391# ifdef NETWARE
7af12a34 1392 void *host = nw_internal_host;
7af12a34 1393 PerlMem_free(aTHXx);
7af12a34 1394 nw_delete_internal_host(host);
acfe0abc 1395# else
bdb50480
NC
1396 void *host = w32_internal_host;
1397 PerlMem_free(aTHXx);
7af12a34 1398 win32_delete_internal_host(host);
acfe0abc 1399# endif
7af12a34 1400 }
1c0ca838
GS
1401# else
1402 PerlMem_free(aTHXx);
1403# endif
acfe0abc
GS
1404#else
1405 PerlMem_free(aTHXx);
76e3520e 1406#endif
79072805
LW
1407}
1408
b7f7fff6 1409#if defined(USE_ITHREADS)
aebd1ac7
GA
1410/* provide destructors to clean up the thread key when libperl is unloaded */
1411#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1412
826955bd 1413#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1414#pragma fini "perl_fini"
666ad1ec
GA
1415#elif defined(__sun) && !defined(__GNUC__)
1416#pragma fini (perl_fini)
aebd1ac7
GA
1417#endif
1418
0dbb1585
AL
1419static void
1420#if defined(__GNUC__)
1421__attribute__((destructor))
aebd1ac7 1422#endif
de009b76 1423perl_fini(void)
aebd1ac7 1424{
27da23d5 1425 dVAR;
5c64bffd
NC
1426 if (
1427#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1428 my_vars &&
1429#endif
1430 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1431 FREE_THREAD_KEY;
1432}
1433
1434#endif /* WIN32 */
1435#endif /* THREADS */
1436
4b556e6c 1437void
864dbfa3 1438Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1439{
3280af22
NIS
1440 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1441 PL_exitlist[PL_exitlistlen].fn = fn;
1442 PL_exitlist[PL_exitlistlen].ptr = ptr;
1443 ++PL_exitlistlen;
4b556e6c
JD
1444}
1445
954c1994
GS
1446/*
1447=for apidoc perl_parse
1448
1449Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1450
1451=cut
1452*/
1453
03d9f026
FC
1454#define SET_CURSTASH(newstash) \
1455 if (PL_curstash != newstash) { \
1456 SvREFCNT_dec(PL_curstash); \
1457 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1458 }
1459
79072805 1460int
0cb96387 1461perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1462{
27da23d5 1463 dVAR;
6224f72b 1464 I32 oldscope;
6224f72b 1465 int ret;
db36c5a1 1466 dJMPENV;
8d063cd8 1467
7918f24d
NC
1468 PERL_ARGS_ASSERT_PERL_PARSE;
1469#ifndef MULTIPLICITY
ed6c66dd 1470 PERL_UNUSED_ARG(my_perl);
7918f24d 1471#endif
7dc86639 1472#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1473 {
7dc86639
YO
1474 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1475
96e440d2 1476 if (s && (grok_atou(s, NULL) == 1)) {
7dc86639
YO
1477 unsigned char *seed= PERL_HASH_SEED;
1478 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1479 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1480 while (seed < seed_end) {
1481 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1482 }
6a5b4183
YO
1483#ifdef PERL_HASH_RANDOMIZE_KEYS
1484 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1485 PL_HASH_RAND_BITS_ENABLED,
1486 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1487#endif
7dc86639
YO
1488 PerlIO_printf(Perl_debug_log, "\n");
1489 }
b0891165
JH
1490 }
1491#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1492 PL_origargc = argc;
e2975953 1493 PL_origargv = argv;
a0d0e21e 1494
a2722ac9
GA
1495 if (PL_origalen != 0) {
1496 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1497 }
1498 else {
3cb9023d
JH
1499 /* Set PL_origalen be the sum of the contiguous argv[]
1500 * elements plus the size of the env in case that it is
e9137a8e 1501 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1502 * as the maximum modifiable length of $0. In the worst case
1503 * the area we are able to modify is limited to the size of
43c32782 1504 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1505 * --jhi */
e1ec3a88 1506 const char *s = NULL;
54bfe034 1507 int i;
b7249aaf 1508 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1509 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1510 const UV aligned =
43c32782
JH
1511 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1512
1513 /* See if all the arguments are contiguous in memory. Note
1514 * that 'contiguous' is a loose term because some platforms
1515 * align the argv[] and the envp[]. If the arguments look
1516 * like non-aligned, assume that they are 'strictly' or
1517 * 'traditionally' contiguous. If the arguments look like
1518 * aligned, we just check that they are within aligned
1519 * PTRSIZE bytes. As long as no system has something bizarre
1520 * like the argv[] interleaved with some other data, we are
1521 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1522 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1523 while (*s) s++;
1524 for (i = 1; i < PL_origargc; i++) {
1525 if ((PL_origargv[i] == s + 1
43c32782 1526#ifdef OS2
c8941eeb 1527 || PL_origargv[i] == s + 2
43c32782 1528#endif
c8941eeb
JH
1529 )
1530 ||
1531 (aligned &&
1532 (PL_origargv[i] > s &&
1533 PL_origargv[i] <=
1534 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1535 )
1536 {
1537 s = PL_origargv[i];
1538 while (*s) s++;
1539 }
1540 else
1541 break;
54bfe034 1542 }
54bfe034 1543 }
a4a109c2
JD
1544
1545#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1546 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1547 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1548 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1549 ||
1550 (aligned &&
1551 (PL_origenviron[0] > s &&
1552 PL_origenviron[0] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 )
1555 {
9d419b5f 1556#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1557 s = PL_origenviron[0];
1558 while (*s) s++;
1559#endif
bd61b366 1560 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1561 /* Force copy of environment. */
1562 for (i = 1; PL_origenviron[i]; i++) {
1563 if (PL_origenviron[i] == s + 1
1564 ||
1565 (aligned &&
1566 (PL_origenviron[i] > s &&
1567 PL_origenviron[i] <=
1568 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1569 )
1570 {
1571 s = PL_origenviron[i];
1572 while (*s) s++;
1573 }
1574 else
1575 break;
54bfe034 1576 }
43c32782 1577 }
54bfe034 1578 }
a4a109c2
JD
1579#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1580
2d2af554 1581 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1582 }
1583
3280af22 1584 if (PL_do_undump) {
a0d0e21e
LW
1585
1586 /* Come here if running an undumped a.out. */
1587
3280af22
NIS
1588 PL_origfilename = savepv(argv[0]);
1589 PL_do_undump = FALSE;
a0d0e21e 1590 cxstack_ix = -1; /* start label stack again */
748a9306 1591 init_ids();
284167a5 1592 assert (!TAINT_get);
b7975bdd 1593 TAINT;
e2051532 1594 set_caret_X();
b7975bdd 1595 TAINT_NOT;
a0d0e21e
LW
1596 init_postdump_symbols(argc,argv,env);
1597 return 0;
1598 }
1599
3280af22 1600 if (PL_main_root) {
3280af22 1601 op_free(PL_main_root);
5f66b61c 1602 PL_main_root = NULL;
ff0cee69 1603 }
5f66b61c 1604 PL_main_start = NULL;
3280af22 1605 SvREFCNT_dec(PL_main_cv);
601f1833 1606 PL_main_cv = NULL;
79072805 1607
3280af22
NIS
1608 time(&PL_basetime);
1609 oldscope = PL_scopestack_ix;
599cee73 1610 PL_dowarn = G_WARN_OFF;
f86702cc 1611
14dd3ad8 1612 JMPENV_PUSH(ret);
6224f72b 1613 switch (ret) {
312caa8e 1614 case 0:
14dd3ad8 1615 parse_body(env,xsinit);
9ebf26ad 1616 if (PL_unitcheckav) {
3c10abe3 1617 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1618 }
1619 if (PL_checkav) {
ca7b837b 1620 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1621 call_list(oldscope, PL_checkav);
9ebf26ad 1622 }
14dd3ad8
GS
1623 ret = 0;
1624 break;
6224f72b
GS
1625 case 1:
1626 STATUS_ALL_FAILURE;
924ba076 1627 /* FALLTHROUGH */
6224f72b
GS
1628 case 2:
1629 /* my_exit() was called */
3280af22 1630 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1631 LEAVE;
1632 FREETMPS;
03d9f026 1633 SET_CURSTASH(PL_defstash);
9ebf26ad 1634 if (PL_unitcheckav) {
3c10abe3 1635 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1636 }
1637 if (PL_checkav) {
ca7b837b 1638 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1639 call_list(oldscope, PL_checkav);
9ebf26ad 1640 }
37038d91 1641 ret = STATUS_EXIT;
14dd3ad8 1642 break;
6224f72b 1643 case 3:
bf49b057 1644 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1645 ret = 1;
1646 break;
6224f72b 1647 }
14dd3ad8
GS
1648 JMPENV_POP;
1649 return ret;
1650}
1651
4a5df386
NC
1652/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1653 miniperl, and we need to see those flags reflected in the values here. */
1654
1655/* What this returns is subject to change. Use the public interface in Config.
1656 */
1657static void
1658S_Internals_V(pTHX_ CV *cv)
1659{
1660 dXSARGS;
1661#ifdef LOCAL_PATCH_COUNT
1662 const int local_patch_count = LOCAL_PATCH_COUNT;
1663#else
1664 const int local_patch_count = 0;
1665#endif
2dc296d2 1666 const int entries = 3 + local_patch_count;
4a5df386 1667 int i;
fe1c5936 1668 static const char non_bincompat_options[] =
4a5df386
NC
1669# ifdef DEBUGGING
1670 " DEBUGGING"
1671# endif
1672# ifdef NO_MATHOMS
0d311fbe 1673 " NO_MATHOMS"
4a5df386 1674# endif
59b86f4b
DM
1675# ifdef NO_HASH_SEED
1676 " NO_HASH_SEED"
1677# endif
3b0e4ee2
MB
1678# ifdef NO_TAINT_SUPPORT
1679 " NO_TAINT_SUPPORT"
1680# endif
cb26ef7a
MB
1681# ifdef PERL_BOOL_AS_CHAR
1682 " PERL_BOOL_AS_CHAR"
1683# endif
4a5df386
NC
1684# ifdef PERL_DISABLE_PMC
1685 " PERL_DISABLE_PMC"
1686# endif
1687# ifdef PERL_DONT_CREATE_GVSV
1688 " PERL_DONT_CREATE_GVSV"
1689# endif
9a044a43
NC
1690# ifdef PERL_EXTERNAL_GLOB
1691 " PERL_EXTERNAL_GLOB"
1692# endif
59b86f4b
DM
1693# ifdef PERL_HASH_FUNC_SIPHASH
1694 " PERL_HASH_FUNC_SIPHASH"
1695# endif
1696# ifdef PERL_HASH_FUNC_SDBM
1697 " PERL_HASH_FUNC_SDBM"
1698# endif
1699# ifdef PERL_HASH_FUNC_DJB2
1700 " PERL_HASH_FUNC_DJB2"
1701# endif
1702# ifdef PERL_HASH_FUNC_SUPERFAST
1703 " PERL_HASH_FUNC_SUPERFAST"
1704# endif
1705# ifdef PERL_HASH_FUNC_MURMUR3
1706 " PERL_HASH_FUNC_MURMUR3"
1707# endif
1708# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1709 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1710# endif
1711# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1712 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1713# endif
1714# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1715 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1716# endif
4a5df386
NC
1717# ifdef PERL_IS_MINIPERL
1718 " PERL_IS_MINIPERL"
1719# endif
1720# ifdef PERL_MALLOC_WRAP
1721 " PERL_MALLOC_WRAP"
1722# endif
1723# ifdef PERL_MEM_LOG
1724 " PERL_MEM_LOG"
1725# endif
1726# ifdef PERL_MEM_LOG_NOIMPL
1727 " PERL_MEM_LOG_NOIMPL"
1728# endif
2542212d
DM
1729# ifdef PERL_NEW_COPY_ON_WRITE
1730 " PERL_NEW_COPY_ON_WRITE"
1731# endif
59b86f4b
DM
1732# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1733 " PERL_PERTURB_KEYS_DETERMINISTIC"
1734# endif
1735# ifdef PERL_PERTURB_KEYS_DISABLED
1736 " PERL_PERTURB_KEYS_DISABLED"
1737# endif
1738# ifdef PERL_PERTURB_KEYS_RANDOM
1739 " PERL_PERTURB_KEYS_RANDOM"
1740# endif
c3cf41ec
NC
1741# ifdef PERL_PRESERVE_IVUV
1742 " PERL_PRESERVE_IVUV"
1743# endif
c051e30b
NC
1744# ifdef PERL_RELOCATABLE_INCPUSH
1745 " PERL_RELOCATABLE_INCPUSH"
1746# endif
4a5df386
NC
1747# ifdef PERL_USE_DEVEL
1748 " PERL_USE_DEVEL"
1749# endif
1750# ifdef PERL_USE_SAFE_PUTENV
1751 " PERL_USE_SAFE_PUTENV"
1752# endif
a3749cf3
NC
1753# ifdef UNLINK_ALL_VERSIONS
1754 " UNLINK_ALL_VERSIONS"
1755# endif
de618ee4
NC
1756# ifdef USE_ATTRIBUTES_FOR_PERLIO
1757 " USE_ATTRIBUTES_FOR_PERLIO"
1758# endif
4a5df386
NC
1759# ifdef USE_FAST_STDIO
1760 " USE_FAST_STDIO"
1761# endif
59b86f4b
DM
1762# ifdef USE_HASH_SEED_EXPLICIT
1763 " USE_HASH_SEED_EXPLICIT"
1764# endif
98548bdf
NC
1765# ifdef USE_LOCALE
1766 " USE_LOCALE"
1767# endif
98548bdf
NC
1768# ifdef USE_LOCALE_CTYPE
1769 " USE_LOCALE_CTYPE"
1770# endif
5a8d8935
NC
1771# ifdef USE_PERL_ATOF
1772 " USE_PERL_ATOF"
1773# endif
0d311fbe
NC
1774# ifdef USE_SITECUSTOMIZE
1775 " USE_SITECUSTOMIZE"
1776# endif
4a5df386
NC
1777 ;
1778 PERL_UNUSED_ARG(cv);
d3db1514 1779 PERL_UNUSED_VAR(items);
4a5df386
NC
1780
1781 EXTEND(SP, entries);
1782
1783 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1784 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1785 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1786
1787#ifdef __DATE__
1788# ifdef __TIME__
1789 PUSHs(Perl_newSVpvn_flags(aTHX_
1790 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1791 SVs_TEMP));
1792# else
1793 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1794 SVs_TEMP));
1795# endif
1796#else
1797 PUSHs(&PL_sv_undef);
1798#endif
1799
4a5df386
NC
1800 for (i = 1; i <= local_patch_count; i++) {
1801 /* This will be an undef, if PL_localpatches[i] is NULL. */
1802 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1803 }
1804
1805 XSRETURN(entries);
1806}
1807
be71fc8f
NC
1808#define INCPUSH_UNSHIFT 0x01
1809#define INCPUSH_ADD_OLD_VERS 0x02
1810#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1811#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1812#define INCPUSH_NOT_BASEDIR 0x10
1813#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1814#define INCPUSH_ADD_SUB_DIRS \
1815 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1816
312caa8e 1817STATIC void *
14dd3ad8 1818S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1819{
27da23d5 1820 dVAR;
2f9285f8 1821 PerlIO *rsfp;
312caa8e 1822 int argc = PL_origargc;
8f42b153 1823 char **argv = PL_origargv;
e1ec3a88 1824 const char *scriptname = NULL;
312caa8e 1825 VOL bool dosearch = FALSE;
eb578fdb 1826 char c;
737c24fc 1827 bool doextract = FALSE;
bd61b366 1828 const char *cddir = NULL;
ab019eaa 1829#ifdef USE_SITECUSTOMIZE
20ef40cf 1830 bool minus_f = FALSE;
ab019eaa 1831#endif
95670bde 1832 SV *linestr_sv = NULL;
5486870f 1833 bool add_read_e_script = FALSE;
87606032 1834 U32 lex_start_flags = 0;
009d90df 1835
ca7b837b 1836 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1837
6224f72b 1838 init_main_stash();
54310121 1839
c7030b81
NC
1840 {
1841 const char *s;
6224f72b
GS
1842 for (argc--,argv++; argc > 0; argc--,argv++) {
1843 if (argv[0][0] != '-' || !argv[0][1])
1844 break;
6224f72b
GS
1845 s = argv[0]+1;
1846 reswitch:
47f56822 1847 switch ((c = *s)) {
729a02f2 1848 case 'C':
1d5472a9
GS
1849#ifndef PERL_STRICT_CR
1850 case '\r':
1851#endif
6224f72b
GS
1852 case ' ':
1853 case '0':
1854 case 'F':
1855 case 'a':
1856 case 'c':
1857 case 'd':
1858 case 'D':
1859 case 'h':
1860 case 'i':
1861 case 'l':
1862 case 'M':
1863 case 'm':
1864 case 'n':
1865 case 'p':
1866 case 's':
1867 case 'u':
1868 case 'U':
1869 case 'v':
599cee73
PM
1870 case 'W':
1871 case 'X':
6224f72b 1872 case 'w':
97bd5664 1873 if ((s = moreswitches(s)))
6224f72b
GS
1874 goto reswitch;
1875 break;
33b78306 1876
1dbad523 1877 case 't':
dc6d7f5c 1878#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1879 /* silently ignore */
dc6d7f5c 1880#elif defined(NO_TAINT_SUPPORT)
3231f579 1881 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1882 "Cowardly refusing to run with -t or -T flags");
1883#else
22f7c9c9 1884 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1885 if( !TAINTING_get ) {
1886 TAINT_WARN_set(TRUE);
1887 TAINTING_set(TRUE);
317ea90d 1888 }
284167a5 1889#endif
317ea90d
MS
1890 s++;
1891 goto reswitch;
6224f72b 1892 case 'T':
dc6d7f5c 1893#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1894 /* silently ignore */
dc6d7f5c 1895#elif defined(NO_TAINT_SUPPORT)
3231f579 1896 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1897 "Cowardly refusing to run with -t or -T flags");
1898#else
22f7c9c9 1899 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1900 TAINTING_set(TRUE);
1901 TAINT_WARN_set(FALSE);
1902#endif
6224f72b
GS
1903 s++;
1904 goto reswitch;
f86702cc 1905
bc9b29db
RH
1906 case 'E':
1907 PL_minus_E = TRUE;
924ba076 1908 /* FALLTHROUGH */
6224f72b 1909 case 'e':
f20b2998 1910 forbid_setid('e', FALSE);
3280af22 1911 if (!PL_e_script) {
396482e1 1912 PL_e_script = newSVpvs("");
5486870f 1913 add_read_e_script = TRUE;
6224f72b
GS
1914 }
1915 if (*++s)
3280af22 1916 sv_catpv(PL_e_script, s);
6224f72b 1917 else if (argv[1]) {
3280af22 1918 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1919 argc--,argv++;
1920 }
1921 else
47f56822 1922 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1923 sv_catpvs(PL_e_script, "\n");
6224f72b 1924 break;
afe37c7d 1925
20ef40cf 1926 case 'f':
f5542d3a 1927#ifdef USE_SITECUSTOMIZE
20ef40cf 1928 minus_f = TRUE;
f5542d3a 1929#endif
20ef40cf
GA
1930 s++;
1931 goto reswitch;
1932
6224f72b 1933 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1934 forbid_setid('I', FALSE);
bd61b366 1935 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1936 argc--,argv++;
1937 }
6224f72b 1938 if (s && *s) {
0df16ed7 1939 STRLEN len = strlen(s);
55b4bc1c 1940 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1941 }
1942 else
a67e862a 1943 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1944 break;
6224f72b 1945 case 'S':
f20b2998 1946 forbid_setid('S', FALSE);
6224f72b
GS
1947 dosearch = TRUE;
1948 s++;
1949 goto reswitch;
1950 case 'V':
7edfd0ef
NC
1951 {
1952 SV *opts_prog;
1953
7edfd0ef 1954 if (*++s != ':') {
37ca4a5b 1955 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1956 }
1957 else {
1958 ++s;
1959 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1960 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1961 0, s, 0);
1962 s += strlen(s);
1963 }
37ca4a5b 1964 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1965 /* don't look for script or read stdin */
1966 scriptname = BIT_BUCKET;
1967 goto reswitch;
6224f72b 1968 }
6224f72b 1969 case 'x':
737c24fc 1970 doextract = TRUE;
6224f72b 1971 s++;
304334da 1972 if (*s)
f4c556ac 1973 cddir = s;
6224f72b
GS
1974 break;
1975 case 0:
1976 break;
1977 case '-':
1978 if (!*++s || isSPACE(*s)) {
1979 argc--,argv++;
1980 goto switch_end;
1981 }
ee8bc8b7
NC
1982 /* catch use of gnu style long options.
1983 Both of these exit immediately. */
1984 if (strEQ(s, "version"))
1985 minus_v();
1986 if (strEQ(s, "help"))
1987 usage();
6224f72b 1988 s--;
924ba076 1989 /* FALLTHROUGH */
6224f72b 1990 default:
cea2e8a9 1991 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1992 }
1993 }
c7030b81
NC
1994 }
1995
6224f72b 1996 switch_end:
54310121 1997
c7030b81
NC
1998 {
1999 char *s;
2000
f675dbe5
CB
2001 if (
2002#ifndef SECURE_INTERNAL_GETENV
284167a5 2003 !TAINTING_get &&
f675dbe5 2004#endif
cf756827 2005 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2006 {
9e0b0d62
KW
2007 /* s points to static memory in getenv(), which may be overwritten at
2008 * any time; use a mortal copy instead */
2009 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2010
74288ac8
GS
2011 while (isSPACE(*s))
2012 s++;
317ea90d 2013 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2014#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2015 /* silently ignore */
dc6d7f5c 2016#elif defined(NO_TAINT_SUPPORT)
3231f579 2017 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2018 "Cowardly refusing to run with -t or -T flags");
2019#else
22f7c9c9 2020 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2021 TAINTING_set(TRUE);
2022 TAINT_WARN_set(FALSE);
2023#endif
317ea90d 2024 }
74288ac8 2025 else {
bd61b366 2026 char *popt_copy = NULL;
74288ac8 2027 while (s && *s) {
54913509 2028 const char *d;
74288ac8
GS
2029 while (isSPACE(*s))
2030 s++;
2031 if (*s == '-') {
2032 s++;
2033 if (isSPACE(*s))
2034 continue;
2035 }
4ea8f8fb 2036 d = s;
74288ac8
GS
2037 if (!*s)
2038 break;
2b622f1a 2039 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2040 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2041 while (++s && *s) {
2042 if (isSPACE(*s)) {
cf756827 2043 if (!popt_copy) {
bfa6c418
NC
2044 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2045 s = popt_copy + (s - d);
2046 d = popt_copy;
cf756827 2047 }
4ea8f8fb
MS
2048 *s++ = '\0';
2049 break;
2050 }
2051 }
1c4db469 2052 if (*d == 't') {
dc6d7f5c 2053#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2054 /* silently ignore */
dc6d7f5c 2055#elif defined(NO_TAINT_SUPPORT)
3231f579 2056 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2057 "Cowardly refusing to run with -t or -T flags");
2058#else
2059 if( !TAINTING_get) {
2060 TAINT_WARN_set(TRUE);
2061 TAINTING_set(TRUE);
317ea90d 2062 }
284167a5 2063#endif
1c4db469 2064 } else {
97bd5664 2065 moreswitches(d);
1c4db469 2066 }
6224f72b 2067 }
6224f72b
GS
2068 }
2069 }
c7030b81 2070 }
a0d0e21e 2071
c29067d7
CH
2072 /* Set $^X early so that it can be used for relocatable paths in @INC */
2073 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2074 assert (!TAINT_get);
c29067d7 2075 TAINT;
e2051532 2076 set_caret_X();
c29067d7
CH
2077 TAINT_NOT;
2078
43c0c913 2079#if defined(USE_SITECUSTOMIZE)
20ef40cf 2080 if (!minus_f) {
43c0c913 2081 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2082 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2083 ie a q() operator with a NUL byte as a the delimiter. This avoids
2084 problems with pathnames containing (say) ' */
43c0c913
NC
2085# ifdef PERL_IS_MINIPERL
2086 AV *const inc = GvAV(PL_incgv);
2087 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2088
2089 if (inc0) {
15870c5c
NC
2090 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2091 it should be reported immediately as a build failure. */
43c0c913
NC
2092 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2093 Perl_newSVpvf(aTHX_
5de87db5 2094 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2095 "do {local $!; -f $f }"
2096 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2097 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2098 }
2099# else
2100 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2101 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2102 if (raw_sitelib) {
2103 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2104 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2105 INCPUSH_CAN_RELOCATE);
2106 const char *const sitelib = SvPVX(sitelib_sv);
2107 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2108 Perl_newSVpvf(aTHX_
2109 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2110 0, SVfARG(sitelib), 0,
2111 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2112 assert (SvREFCNT(sitelib_sv) == 1);
2113 SvREFCNT_dec(sitelib_sv);
2114 }
43c0c913 2115# endif
20ef40cf
GA
2116 }
2117#endif
2118
6224f72b
GS
2119 if (!scriptname)
2120 scriptname = argv[0];
3280af22 2121 if (PL_e_script) {
6224f72b
GS
2122 argc++,argv--;
2123 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2124 }
bd61b366 2125 else if (scriptname == NULL) {
6224f72b
GS
2126#ifdef MSDOS
2127 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2128 moreswitches("h");
6224f72b
GS
2129#endif
2130 scriptname = "-";
2131 }
2132
284167a5 2133 assert (!TAINT_get);
2cace6ac 2134 init_perllib();
6224f72b 2135
a52eba0e 2136 {
f20b2998 2137 bool suidscript = FALSE;
829372d3 2138
8d113837 2139 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2140 if (!rsfp) {
2141 rsfp = PerlIO_stdin();
87606032 2142 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2143 }
6224f72b 2144
b24bc095 2145 validate_suid(rsfp);
6224f72b 2146
64ca3a65 2147#ifndef PERL_MICRO
a52eba0e
NC
2148# if defined(SIGCHLD) || defined(SIGCLD)
2149 {
2150# ifndef SIGCHLD
2151# define SIGCHLD SIGCLD
2152# endif
2153 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2154 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2155 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2156 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2157 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2158 }
0b5b802d 2159 }
a52eba0e 2160# endif
64ca3a65 2161#endif
0b5b802d 2162
737c24fc 2163 if (doextract) {
faef540c 2164
f20b2998 2165 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2166 setuid scripts. */
2167 forbid_setid('x', suidscript);
f20b2998 2168 /* Hence you can't get here if suidscript is true */
faef540c 2169
95670bde
NC
2170 linestr_sv = newSV_type(SVt_PV);
2171 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2172 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2173 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2174 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2175 }
f4c556ac 2176 }
6224f72b 2177
ea726b52 2178 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2179 CvUNIQUE_on(PL_compcv);
2180
eacbb379 2181 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2182
dd69841b
BB
2183 PL_isarev = newHV();
2184
0c4f7ff0 2185 boot_core_PerlIO();
6224f72b 2186 boot_core_UNIVERSAL();
e1a479c5 2187 boot_core_mro();
4a5df386 2188 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2189
2190 if (xsinit)
acfe0abc 2191 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2192#ifndef PERL_MICRO
739a0b84 2193#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2194 init_os_extras();
6224f72b 2195#endif
64ca3a65 2196#endif
6224f72b 2197
29209bc5 2198#ifdef USE_SOCKS
1b9c9cf5
DH
2199# ifdef HAS_SOCKS5_INIT
2200 socks5_init(argv[0]);
2201# else
29209bc5 2202 SOCKSinit(argv[0]);
1b9c9cf5 2203# endif
ac27b0f5 2204#endif
29209bc5 2205
6224f72b
GS
2206 init_predump_symbols();
2207 /* init_postdump_symbols not currently designed to be called */
2208 /* more than once (ENV isn't cleared first, for example) */
2209 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2210 if (!PL_do_undump)
6224f72b
GS
2211 init_postdump_symbols(argc,argv,env);
2212
27da23d5
JH
2213 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2214 * or explicitly in some platforms.
085a54d9 2215 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2216 * look like the user wants to use UTF-8. */
a0fd4948 2217#if defined(__SYMBIAN32__)
27da23d5
JH
2218 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2219#endif
e27b5b51 2220# ifndef PERL_IS_MINIPERL
06e66572
JH
2221 if (PL_unicode) {
2222 /* Requires init_predump_symbols(). */
a05d7ebb 2223 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2224 IO* io;
2225 PerlIO* fp;
2226 SV* sv;
2227
a05d7ebb 2228 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2229 * and the default open disciplines. */
a05d7ebb
JH
2230 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2231 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2232 (fp = IoIFP(io)))
2233 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2234 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2235 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2236 (fp = IoOFP(io)))
2237 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2238 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2239 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2240 (fp = IoOFP(io)))
2241 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2242 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2243 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2244 SVt_PV)))) {
a05d7ebb
JH
2245 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2246 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2247 if (in) {
2248 if (out)
76f68e9b 2249 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2250 else
76f68e9b 2251 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2252 }
2253 else if (out)
76f68e9b 2254 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2255 SvSETMAGIC(sv);
2256 }
b310b053
JH
2257 }
2258 }
e27b5b51 2259#endif
b310b053 2260
c7030b81
NC
2261 {
2262 const char *s;
4ffa73a3
JH
2263 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2264 if (strEQ(s, "unsafe"))
2265 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2266 else if (strEQ(s, "safe"))
2267 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2268 else
2269 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2270 }
c7030b81 2271 }
4ffa73a3 2272
81d86705 2273
87606032 2274 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2275 SvREFCNT_dec(linestr_sv);
95670bde 2276
219f7226 2277 PL_subname = newSVpvs("main");
6224f72b 2278
5486870f
DM
2279 if (add_read_e_script)
2280 filter_add(read_e_script, NULL);
2281
6224f72b
GS
2282 /* now parse the script */
2283
93189314 2284 SETERRNO(0,SS_NORMAL);
28ac2b49 2285 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2286 if (PL_minus_c)
cea2e8a9 2287 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2288 else {
cea2e8a9 2289 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2290 PL_origfilename);
6224f72b
GS
2291 }
2292 }
57843af0 2293 CopLINE_set(PL_curcop, 0);
03d9f026 2294 SET_CURSTASH(PL_defstash);
3280af22
NIS
2295 if (PL_e_script) {
2296 SvREFCNT_dec(PL_e_script);
a0714e2c 2297 PL_e_script = NULL;
6224f72b
GS
2298 }
2299
3280af22 2300 if (PL_do_undump)
6224f72b
GS
2301 my_unexec();
2302
57843af0
GS
2303 if (isWARN_ONCE) {
2304 SAVECOPFILE(PL_curcop);
2305 SAVECOPLINE(PL_curcop);
3280af22 2306 gv_check(PL_defstash);
57843af0 2307 }
6224f72b
GS
2308
2309 LEAVE;
2310 FREETMPS;
2311
2312#ifdef MYMALLOC
f6a607bc
RGS
2313 {
2314 const char *s;
96e440d2
JH
2315 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2316 dump_mstats("after compilation:");
f6a607bc 2317 }
6224f72b
GS
2318#endif
2319
2320 ENTER;
febb3a6d 2321 PL_restartjmpenv = NULL;
3280af22 2322 PL_restartop = 0;
312caa8e 2323 return NULL;
6224f72b
GS
2324}
2325
954c1994
GS
2326/*
2327=for apidoc perl_run
2328
2329Tells a Perl interpreter to run. See L<perlembed>.
2330
2331=cut
2332*/
2333
6224f72b 2334int
0cb96387 2335perl_run(pTHXx)
6224f72b 2336{
6224f72b 2337 I32 oldscope;
14dd3ad8 2338 int ret = 0;
db36c5a1 2339 dJMPENV;
6224f72b 2340
7918f24d
NC
2341 PERL_ARGS_ASSERT_PERL_RUN;
2342#ifndef MULTIPLICITY
ed6c66dd 2343 PERL_UNUSED_ARG(my_perl);
7918f24d 2344#endif
9d4ba2ae 2345
3280af22 2346 oldscope = PL_scopestack_ix;
96e176bf
CL
2347#ifdef VMS
2348 VMSISH_HUSHED = 0;
2349#endif
6224f72b 2350
14dd3ad8 2351 JMPENV_PUSH(ret);
6224f72b
GS
2352 switch (ret) {
2353 case 1:
2354 cxstack_ix = -1; /* start context stack again */
312caa8e 2355 goto redo_body;
14dd3ad8 2356 case 0: /* normal completion */
14dd3ad8
GS
2357 redo_body:
2358 run_body(oldscope);
924ba076 2359 /* FALLTHROUGH */
14dd3ad8 2360 case 2: /* my_exit() */
3280af22 2361 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2362 LEAVE;
2363 FREETMPS;
03d9f026 2364 SET_CURSTASH(PL_defstash);
3a1ee7e8 2365 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2366 PL_endav && !PL_minus_c) {
ca7b837b 2367 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2368 call_list(oldscope, PL_endav);
9ebf26ad 2369 }
6224f72b
GS
2370#ifdef MYMALLOC
2371 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2372 dump_mstats("after execution: ");
2373#endif
37038d91 2374 ret = STATUS_EXIT;
14dd3ad8 2375 break;
6224f72b 2376 case 3:
312caa8e
CS
2377 if (PL_restartop) {
2378 POPSTACK_TO(PL_mainstack);
2379 goto redo_body;
6224f72b 2380 }
5637ef5b 2381 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2382 FREETMPS;
14dd3ad8
GS
2383 ret = 1;
2384 break;
6224f72b
GS
2385 }
2386
14dd3ad8
GS
2387 JMPENV_POP;
2388 return ret;
312caa8e
CS
2389}
2390
dd374669 2391STATIC void
14dd3ad8
GS
2392S_run_body(pTHX_ I32 oldscope)
2393{
d3b97530
DM
2394 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2395 PL_sawampersand ? "Enabling" : "Omitting",
2396 (unsigned int)(PL_sawampersand)));
6224f72b 2397
3280af22 2398 if (!PL_restartop) {
cf2782cd 2399#ifdef DEBUGGING
f0e3f042
CS
2400 if (DEBUG_x_TEST || DEBUG_B_TEST)
2401 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2402 if (!DEBUG_q_TEST)
2403 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2404#endif
6224f72b 2405
3280af22 2406 if (PL_minus_c) {
bf49b057 2407 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2408 my_exit(0);
2409 }
3280af22 2410 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2411 PL_DBsingle_iv = 1;
9ebf26ad 2412 if (PL_initav) {
ca7b837b 2413 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2414 call_list(oldscope, PL_initav);
9ebf26ad 2415 }
f1fac472 2416#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2417 if (PL_main_root && PL_main_root->op_slabbed)
2418 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2419#endif
6224f72b
GS
2420 }
2421
2422 /* do it */
2423
ca7b837b 2424 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2425
3280af22 2426 if (PL_restartop) {
febb3a6d 2427 PL_restartjmpenv = NULL;
533c011a 2428 PL_op = PL_restartop;
3280af22 2429 PL_restartop = 0;
cea2e8a9 2430 CALLRUNOPS(aTHX);
6224f72b 2431 }
3280af22
NIS
2432 else if (PL_main_start) {
2433 CvDEPTH(PL_main_cv) = 1;
533c011a 2434 PL_op = PL_main_start;
cea2e8a9 2435 CALLRUNOPS(aTHX);
6224f72b 2436 }
f6b3007c 2437 my_exit(0);
e5964223 2438 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2439}
2440
954c1994 2441/*
ccfc67b7
JH
2442=head1 SV Manipulation Functions
2443
954c1994
GS
2444=for apidoc p||get_sv
2445
64ace3f8 2446Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2447C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2448Perl variable does not exist then it will be created. If C<flags> is zero
2449and the variable does not exist then NULL is returned.
954c1994
GS
2450
2451=cut
2452*/
2453
6224f72b 2454SV*
64ace3f8 2455Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2456{
2457 GV *gv;
7918f24d
NC
2458
2459 PERL_ARGS_ASSERT_GET_SV;
2460
64ace3f8 2461 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2462 if (gv)
2463 return GvSV(gv);
a0714e2c 2464 return NULL;
6224f72b
GS
2465}
2466
954c1994 2467/*
ccfc67b7
JH
2468=head1 Array Manipulation Functions
2469
954c1994
GS
2470=for apidoc p||get_av
2471
f0b90de1
SF
2472Returns the AV of the specified Perl global or package array with the given
2473name (so it won't work on lexical variables). C<flags> are passed
72d33970 2474to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2475Perl variable does not exist then it will be created. If C<flags> is zero
2476and the variable does not exist then NULL is returned.
954c1994 2477
f0b90de1
SF
2478Perl equivalent: C<@{"$name"}>.
2479
954c1994
GS
2480=cut
2481*/
2482
6224f72b 2483AV*
cbfd0a87 2484Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2485{
cbfd0a87 2486 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2487
2488 PERL_ARGS_ASSERT_GET_AV;
2489
cbfd0a87 2490 if (flags)
6224f72b
GS
2491 return GvAVn(gv);
2492 if (gv)
2493 return GvAV(gv);
7d49f689 2494 return NULL;
6224f72b
GS
2495}
2496
954c1994 2497/*
ccfc67b7
JH
2498=head1 Hash Manipulation Functions
2499
954c1994
GS
2500=for apidoc p||get_hv
2501
6673a63c 2502Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2503C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2504Perl variable does not exist then it will be created. If C<flags> is zero
2505and the variable does not exist then NULL is returned.
954c1994
GS
2506
2507=cut
2508*/
2509
6224f72b 2510HV*
6673a63c 2511Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2512{
6673a63c 2513 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2514
2515 PERL_ARGS_ASSERT_GET_HV;
2516
6673a63c 2517 if (flags)
a0d0e21e
LW
2518 return GvHVn(gv);
2519 if (gv)
2520 return GvHV(gv);
5c284bb0 2521 return NULL;
a0d0e21e
LW
2522}
2523
954c1994 2524/*
ccfc67b7
JH
2525=head1 CV Manipulation Functions
2526
780a5241
NC
2527=for apidoc p||get_cvn_flags
2528
2529Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2530C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2531exist then it will be declared (which has the same effect as saying
2532C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2533then NULL is returned.
2534
954c1994
GS
2535=for apidoc p||get_cv
2536
780a5241 2537Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2538
2539=cut
2540*/
2541
a0d0e21e 2542CV*
780a5241 2543Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2544{
780a5241 2545 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2546
2547 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2548
334dda80
FC
2549 /* XXX this is probably not what they think they're getting.
2550 * It has the same effect as "sub name;", i.e. just a forward
2551 * declaration! */
780a5241 2552 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2553 return newSTUB(gv,0);
780a5241 2554 }
a0d0e21e 2555 if (gv)
8ebc5c01 2556 return GvCVu(gv);
601f1833 2557 return NULL;
a0d0e21e
LW
2558}
2559
2c67934f
NC
2560/* Nothing in core calls this now, but we can't replace it with a macro and
2561 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2562CV*
2563Perl_get_cv(pTHX_ const char *name, I32 flags)
2564{
7918f24d
NC
2565 PERL_ARGS_ASSERT_GET_CV;
2566
780a5241
NC
2567 return get_cvn_flags(name, strlen(name), flags);
2568}
2569
79072805
LW
2570/* Be sure to refetch the stack pointer after calling these routines. */
2571
954c1994 2572/*
ccfc67b7
JH
2573
2574=head1 Callback Functions
2575
954c1994
GS
2576=for apidoc p||call_argv
2577
f0b90de1 2578Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2579with C<argv> (a NULL-terminated array of strings) as arguments. See
2580L<perlcall>.
f0b90de1
SF
2581
2582Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2583
2584=cut
2585*/
2586
a0d0e21e 2587I32
5aaab254 2588Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2589
8ac85365
NIS
2590 /* See G_* flags in cop.h */
2591 /* null terminated arg list */
8990e307 2592{
a0d0e21e 2593 dSP;
8990e307 2594
7918f24d
NC
2595 PERL_ARGS_ASSERT_CALL_ARGV;
2596
924508f0 2597 PUSHMARK(SP);
a0d0e21e 2598 if (argv) {
8990e307 2599 while (*argv) {
6e449a3a 2600 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2601 argv++;
2602 }
a0d0e21e 2603 PUTBACK;
8990e307 2604 }
864dbfa3 2605 return call_pv(sub_name, flags);
8990e307
LW
2606}
2607
954c1994
GS
2608/*
2609=for apidoc p||call_pv
2610
2611Performs a callback to the specified Perl sub. See L<perlcall>.
2612
2613=cut
2614*/
2615
a0d0e21e 2616I32
864dbfa3 2617Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2618 /* name of the subroutine */
2619 /* See G_* flags in cop.h */
a0d0e21e 2620{
7918f24d
NC
2621 PERL_ARGS_ASSERT_CALL_PV;
2622
0da0e728 2623 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2624}
2625
954c1994
GS
2626/*
2627=for apidoc p||call_method
2628
2629Performs a callback to the specified Perl method. The blessed object must
2630be on the stack. See L<perlcall>.
2631
2632=cut
2633*/
2634
a0d0e21e 2635I32
864dbfa3 2636Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2637 /* name of the subroutine */
2638 /* See G_* flags in cop.h */
a0d0e21e 2639{
46ca9bac 2640 STRLEN len;
c106c2be 2641 SV* sv;
7918f24d
NC
2642 PERL_ARGS_ASSERT_CALL_METHOD;
2643
46ca9bac 2644 len = strlen(methname);
c106c2be
RZ
2645 sv = flags & G_METHOD_NAMED
2646 ? sv_2mortal(newSVpvn_share(methname, len,0))
2647 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2648
c106c2be 2649 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2650}
2651
2652/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2653/*
2654=for apidoc p||call_sv
2655
2656Performs a callback to the Perl sub whose name is in the SV. See
2657L<perlcall>.
2658
2659=cut
2660*/
2661
a0d0e21e 2662I32
001d637e 2663Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2664 /* See G_* flags in cop.h */
a0d0e21e 2665{
27da23d5 2666 dVAR; dSP;
a0d0e21e 2667 LOGOP myop; /* fake syntax tree node */
b46e009d 2668 METHOP method_op;
aa689395 2669 I32 oldmark;
8ea43dc8 2670 VOL I32 retval = 0;
a0d0e21e 2671 I32 oldscope;
54310121 2672 bool oldcatch = CATCH_GET;
6224f72b 2673 int ret;
c4420975 2674 OP* const oldop = PL_op;
db36c5a1 2675 dJMPENV;
1e422769 2676
7918f24d
NC
2677 PERL_ARGS_ASSERT_CALL_SV;
2678
a0d0e21e
LW
2679 if (flags & G_DISCARD) {
2680 ENTER;
2681 SAVETMPS;
2682 }
2f8edad0
NC
2683 if (!(flags & G_WANT)) {
2684 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2685 */
2686 flags |= G_SCALAR;
2687 }
a0d0e21e 2688
aa689395 2689 Zero(&myop, 1, LOGOP);
f51d4af5 2690 if (!(flags & G_NOARGS))
aa689395 2691 myop.op_flags |= OPf_STACKED;
4f911530 2692 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2693 SAVEOP();
533c011a 2694 PL_op = (OP*)&myop;
aa689395 2695
3280af22 2696 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2697 if (!(flags & G_METHOD_NAMED))
2698 *++PL_stack_sp = sv;
aa689395 2699 oldmark = TOPMARK;
3280af22 2700 oldscope = PL_scopestack_ix;
a0d0e21e 2701
3280af22 2702 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2703 /* Handle first BEGIN of -d. */
3280af22 2704 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2705 /* Try harder, since this may have been a sighandler, thus
2706 * curstash may be meaningless. */
ea726b52 2707 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2708 && !(flags & G_NODEBUG))
5ff48db8 2709 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2710
c106c2be 2711 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2712 Zero(&method_op, 1, METHOP);
2713 method_op.op_next = (OP*)&myop;
2714 PL_op = (OP*)&method_op;
c106c2be 2715 if ( flags & G_METHOD_NAMED ) {
b46e009d 2716 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2717 method_op.op_type = OP_METHOD_NAMED;
2718 method_op.op_u.op_meth_sv = sv;
c106c2be 2719 } else {
b46e009d 2720 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2721 method_op.op_type = OP_METHOD;
c106c2be
RZ
2722 }
2723 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2724 myop.op_type = OP_ENTERSUB;
968b3946
GS
2725 }
2726
312caa8e 2727 if (!(flags & G_EVAL)) {
0cdb2077 2728 CATCH_SET(TRUE);
d6f07c05 2729 CALL_BODY_SUB((OP*)&myop);
312caa8e 2730 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2731 CATCH_SET(oldcatch);
312caa8e
CS
2732 }
2733 else {
d78bda3d 2734 myop.op_other = (OP*)&myop;
3280af22 2735 PL_markstack_ptr--;
edb2152a 2736 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2737 PL_markstack_ptr++;
a0d0e21e 2738
14dd3ad8 2739 JMPENV_PUSH(ret);
edb2152a 2740
6224f72b
GS
2741 switch (ret) {
2742 case 0:
14dd3ad8 2743 redo_body:
d6f07c05 2744 CALL_BODY_SUB((OP*)&myop);
312caa8e 2745 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2746 if (!(flags & G_KEEPERR)) {
ab69dbc2 2747 CLEAR_ERRSV();
8433848b 2748 }
a0d0e21e 2749 break;
6224f72b 2750 case 1:
f86702cc 2751 STATUS_ALL_FAILURE;
924ba076 2752 /* FALLTHROUGH */
6224f72b 2753 case 2:
a0d0e21e 2754 /* my_exit() was called */
03d9f026 2755 SET_CURSTASH(PL_defstash);
a0d0e21e 2756 FREETMPS;
14dd3ad8 2757 JMPENV_POP;
f86702cc 2758 my_exit_jump();
e5964223 2759 NOT_REACHED; /* NOTREACHED */
6224f72b 2760 case 3:
3280af22 2761 if (PL_restartop) {
febb3a6d 2762 PL_restartjmpenv = NULL;
533c011a 2763 PL_op = PL_restartop;
3280af22 2764 PL_restartop = 0;
312caa8e 2765 goto redo_body;
a0d0e21e 2766 }
3280af22 2767 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2768 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2769 retval = 0;
2770 else {
2771 retval = 1;
3280af22 2772 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2773 }
312caa8e 2774 break;
a0d0e21e 2775 }
a0d0e21e 2776
edb2152a
NC
2777 if (PL_scopestack_ix > oldscope)
2778 delete_eval_scope();
14dd3ad8 2779 JMPENV_POP;
a0d0e21e 2780 }
1e422769 2781
a0d0e21e 2782 if (flags & G_DISCARD) {
3280af22 2783 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2784 retval = 0;
2785 FREETMPS;
2786 LEAVE;
2787 }
533c011a 2788 PL_op = oldop;
a0d0e21e
LW
2789 return retval;
2790}
2791
6e72f9df 2792/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2793
954c1994
GS
2794/*
2795=for apidoc p||eval_sv
2796
72d33970
FC
2797Tells Perl to C<eval> the string in the SV. It supports the same flags
2798as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2799
2800=cut
2801*/
2802
a0d0e21e 2803I32
864dbfa3 2804Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2805
8ac85365 2806 /* See G_* flags in cop.h */
a0d0e21e 2807{
97aff369 2808 dVAR;
924508f0 2809 dSP;
a0d0e21e 2810 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2811 VOL I32 oldmark = SP - PL_stack_base;
2812 VOL I32 retval = 0;
6224f72b 2813 int ret;
c4420975 2814 OP* const oldop = PL_op;
db36c5a1 2815 dJMPENV;
84902520 2816
7918f24d
NC
2817 PERL_ARGS_ASSERT_EVAL_SV;
2818
4633a7c4
LW
2819 if (flags & G_DISCARD) {
2820 ENTER;
2821 SAVETMPS;
2822 }
2823
462e5cf6 2824 SAVEOP();
533c011a 2825 PL_op = (OP*)&myop;
5ff48db8 2826 Zero(&myop, 1, UNOP);
3280af22
NIS
2827 EXTEND(PL_stack_sp, 1);
2828 *++PL_stack_sp = sv;
79072805 2829
4633a7c4
LW
2830 if (!(flags & G_NOARGS))
2831 myop.op_flags = OPf_STACKED;
6e72f9df 2832 myop.op_type = OP_ENTEREVAL;
4f911530 2833 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2834 if (flags & G_KEEPERR)
2835 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2836
2837 if (flags & G_RE_REPARSING)
2838 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2839
dedbcade
DM
2840 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2841 * before a PUSHEVAL, which corrupts the stack after a croak */
2842 TAINT_PROPER("eval_sv()");
2843
14dd3ad8 2844 JMPENV_PUSH(ret);
6224f72b
GS
2845 switch (ret) {
2846 case 0:
14dd3ad8 2847 redo_body:
2ba65d5f
DM
2848 if (PL_op == (OP*)(&myop)) {
2849 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2850 if (!PL_op)
2851 goto fail; /* failed in compilation */
2852 }
4aca2f62 2853 CALLRUNOPS(aTHX);
312caa8e 2854 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2855 if (!(flags & G_KEEPERR)) {
ab69dbc2 2856 CLEAR_ERRSV();
8433848b 2857 }
4633a7c4 2858 break;
6224f72b 2859 case 1:
f86702cc 2860 STATUS_ALL_FAILURE;
924ba076 2861 /* FALLTHROUGH */
6224f72b 2862 case 2:
4633a7c4 2863 /* my_exit() was called */
03d9f026 2864 SET_CURSTASH(PL_defstash);
4633a7c4 2865 FREETMPS;
14dd3ad8 2866 JMPENV_POP;
f86702cc 2867 my_exit_jump();
e5964223 2868 NOT_REACHED; /* NOTREACHED */
6224f72b 2869 case 3:
3280af22 2870 if (PL_restartop) {
febb3a6d 2871 PL_restartjmpenv = NULL;
533c011a 2872 PL_op = PL_restartop;
3280af22 2873 PL_restartop = 0;
312caa8e 2874 goto redo_body;
4633a7c4 2875 }
4aca2f62 2876 fail:
3280af22 2877 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2878 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2879 retval = 0;
2880 else {
2881 retval = 1;
3280af22 2882 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2883 }
312caa8e 2884 break;
4633a7c4
LW
2885 }
2886
14dd3ad8 2887 JMPENV_POP;
4633a7c4 2888 if (flags & G_DISCARD) {
3280af22 2889 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2890 retval = 0;
2891 FREETMPS;
2892 LEAVE;
2893 }
533c011a 2894 PL_op = oldop;
4633a7c4
LW
2895 return retval;
2896}
2897
954c1994
GS
2898/*
2899=for apidoc p||eval_pv
2900
422791e4 2901Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2902
2903=cut
2904*/
2905
137443ea 2906SV*
864dbfa3 2907Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2908{
137443ea
PP
2909 SV* sv = newSVpv(p, 0);
2910
7918f24d
NC
2911 PERL_ARGS_ASSERT_EVAL_PV;
2912
864dbfa3 2913 eval_sv(sv, G_SCALAR);
137443ea
PP
2914 SvREFCNT_dec(sv);
2915
ed1786ad
DD
2916 {
2917 dSP;
2918 sv = POPs;
2919 PUTBACK;
2920 }
137443ea 2921
eed484f9
DD
2922 /* just check empty string or undef? */
2923 if (croak_on_error) {
2924 SV * const errsv = ERRSV;
2925 if(SvTRUE_NN(errsv))
2926 /* replace with croak_sv? */
2927 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2928 }
137443ea
PP
2929
2930 return sv;
2931}
2932
4633a7c4
LW
2933/* Require a module. */
2934
954c1994 2935/*
ccfc67b7
JH
2936=head1 Embedding Functions
2937
954c1994
GS
2938=for apidoc p||require_pv
2939
7d3fb230
BS
2940Tells Perl to C<require> the file named by the string argument. It is
2941analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2942implemented that way; consider using load_module instead.
954c1994 2943
7d3fb230 2944=cut */
954c1994 2945
4633a7c4 2946void
864dbfa3 2947Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2948{
d3acc0f7 2949 dSP;
97aff369 2950 SV* sv;
7918f24d
NC
2951
2952 PERL_ARGS_ASSERT_REQUIRE_PV;
2953
e788e7d3 2954 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2955 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2956 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2957 POPSTACK;
79072805
LW
2958}
2959
76e3520e 2960STATIC void
b6f82619 2961S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2962{
ab821d7f 2963 /* This message really ought to be max 23 lines.
75c72d73 2964 * Removed -h because the user already knows that option. Others? */
fb73857a 2965
1566c39d
NC
2966 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2967 minimum of 509 character string literals. */
27da23d5 2968 static const char * const usage_msg[] = {
1566c39d
NC
2969" -0[octal] specify record separator (\\0, if no argument)\n"
2970" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2971" -C[number/list] enables the listed Unicode features\n"
2972" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2973" -d[:debugger] run program under debugger\n"
2974" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2975" -e program one line of program (several -e's allowed, omit programfile)\n"
2976" -E program like -e, but enables all optional features\n"
2977" -f don't do $sitelib/sitecustomize.pl at startup\n"
2978" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2979" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2980" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2981" -l[octal] enable line ending processing, specifies line terminator\n"
2982" -[mM][-]module execute \"use/no module...\" before executing program\n"
2983" -n assume \"while (<>) { ... }\" loop around program\n"
2984" -p assume loop like -n but print line also, like sed\n"
2985" -s enable rudimentary parsing for switches after programfile\n"
2986" -S look for programfile using PATH environment variable\n",
2987" -t enable tainting warnings\n"
2988" -T enable tainting checks\n"
2989" -u dump core after parsing program\n"
2990" -U allow unsafe operations\n"
2991" -v print version, patchlevel and license\n"
2992" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2993" -w enable many useful warnings\n"
1566c39d
NC
2994" -W enable all warnings\n"
2995" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2996" -X disable all warnings\n"
2997" \n"
2998"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2999NULL
3000};
27da23d5 3001 const char * const *p = usage_msg;
1566c39d 3002 PerlIO *out = PerlIO_stdout();
fb73857a 3003
1566c39d
NC
3004 PerlIO_printf(out,
3005 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3006 PL_origargv[0]);
fb73857a 3007 while (*p)
1566c39d 3008 PerlIO_puts(out, *p++);
b6f82619 3009 my_exit(0);
4633a7c4
LW
3010}
3011
b4ab917c
DM
3012/* convert a string of -D options (or digits) into an int.
3013 * sets *s to point to the char after the options */
3014
3015#ifdef DEBUGGING
3016int
e1ec3a88 3017Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3018{
27da23d5 3019 static const char * const usage_msgd[] = {
651b8f1a
NC
3020 " Debugging flag values: (see also -d)\n"
3021 " p Tokenizing and parsing (with v, displays parse stack)\n"
3022 " s Stack snapshots (with v, displays all stacks)\n"
3023 " l Context (loop) stack processing\n"
3024 " t Trace execution\n"
3025 " o Method and overloading resolution\n",
3026 " c String/numeric conversions\n"
3027 " P Print profiling info, source file input state\n"
3028 " m Memory and SV allocation\n"
3029 " f Format processing\n"
3030 " r Regular expression parsing and execution\n"
3031 " x Syntax tree dump\n",
3032 " u Tainting checks\n"
3033 " H Hash dump -- usurps values()\n"
3034 " X Scratchpad allocation\n"
3035 " D Cleaning up\n"
56967202 3036 " S Op slab allocation\n"
651b8f1a
NC
3037 " T Tokenising\n"
3038 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3039 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3040 " v Verbose: use in conjunction with other flags\n"
3041 " C Copy On Write\n"
3042 " A Consistency checks on internal structures\n"
3043 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3044 " M trace smart match resolution\n"
3045 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3046 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3047 NULL
3048 };
b4ab917c 3049 int i = 0;
7918f24d
NC
3050
3051 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3052
b4ab917c
DM
3053 if (isALPHA(**s)) {
3054 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3055 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3056
0eb30aeb 3057 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3058 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3059 if (d)
3060 i |= 1 << (d - debopts);
3061 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3062 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3063 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3064 }
3065 }
e6e64d9b 3066 else if (isDIGIT(**s)) {
96e440d2
JH
3067 const char* e;
3068 i = grok_atou(*s, &e);
3069 if (e)
3070 *s = e;
0eb30aeb 3071 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3072 }
ddcf8bc1 3073 else if (givehelp) {
06e869a4 3074 const char *const *p = usage_msgd;
651b8f1a 3075 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3076 }
b4ab917c
DM
3077 return i;
3078}
3079#endif
3080
79072805
LW
3081/* This routine handles any switches that can be given during run */
3082
c7030b81
NC
3083const char *
3084Perl_moreswitches(pTHX_ const char *s)
79072805 3085{
27da23d5 3086 dVAR;
84c133a0 3087 UV rschar;
0544e6df 3088 const char option = *s; /* used to remember option in -m/-M code */
79072805 3089
7918f24d
NC
3090 PERL_ARGS_ASSERT_MORESWITCHES;
3091
79072805
LW
3092 switch (*s) {
3093 case '0':
a863c7d1 3094 {
f2095865 3095 I32 flags = 0;
a3b680e6 3096 STRLEN numlen;
f2095865
JH
3097
3098 SvREFCNT_dec(PL_rs);
3099 if (s[1] == 'x' && s[2]) {
a3b680e6 3100 const char *e = s+=2;
f2095865
JH
3101 U8 *tmps;
3102
a3b680e6
AL
3103 while (*e)
3104 e++;
f2095865
JH
3105 numlen = e - s;
3106 flags = PERL_SCAN_SILENT_ILLDIGIT;
3107 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3108 if (s + numlen < e) {
3109 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3110 numlen = 0;
3111 s--;
3112 }
396482e1 3113 PL_rs = newSVpvs("");
c5661c80 3114 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3115 tmps = (U8*)SvPVX(PL_rs);
3116 uvchr_to_utf8(tmps, rschar);
3117 SvCUR_set(PL_rs, UNISKIP(rschar));
3118 SvUTF8_on(PL_rs);
3119 }
3120 else {
3121 numlen = 4;
3122 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3123 if (rschar & ~((U8)~0))
3124 PL_rs = &PL_sv_undef;
3125 else if (!rschar && numlen >= 2)
396482e1 3126 PL_rs = newSVpvs("");
f2095865
JH
3127 else {
3128 char ch = (char)rschar;
3129 PL_rs = newSVpvn(&ch, 1);
3130 }
3131 }
64ace3f8 3132 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3133 return s + numlen;
a863c7d1 3134 }
46487f74 3135 case 'C':
a05d7ebb 3136 s++;
dd374669 3137 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3138 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3139 PL_utf8cache = -1;
46487f74 3140 return s;
2304df62 3141 case 'F':
5fc691f1 3142 PL_minus_a = TRUE;
3280af22 3143 PL_minus_F = TRUE;
24ffa309 3144 PL_minus_n = TRUE;
ebce5377
RGS
3145 PL_splitstr = ++s;
3146 while (*s && !isSPACE(*s)) ++s;
e49e380e 3147 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3148 return s;
79072805 3149 case 'a':
3280af22 3150 PL_minus_a = TRUE;
24ffa309 3151 PL_minus_n = TRUE;
79072805
LW
3152 s++;
3153 return s;
3154 case 'c':
3280af22 3155 PL_minus_c = TRUE;
79072805
LW
3156 s++;
3157 return s;
3158 case 'd':
f20b2998 3159 forbid_setid('d', FALSE);
4633a7c4 3160 s++;
2cbb2ee1
RGS
3161
3162 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3163 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3164 ++s;
3165 my_setenv("PERL5DB_THREADED", "1");
3166 }
3167
70c94a19
RR
3168 /* The following permits -d:Mod to accepts arguments following an =
3169 in the fashion that -MSome::Mod does. */
3170 if (*s == ':' || *s == '=') {
b19934fb
NC
3171 const char *start;
3172 const char *end;
3173 SV *sv;
3174
3175 if (*++s == '-') {
3176 ++s;
3177 sv = newSVpvs("no Devel::");
3178 } else {
3179 sv = newSVpvs("use Devel::");
3180 }
3181
3182 start = s;
3183 end = s + strlen(s);
f85893a1 3184
b19934fb 3185 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3186 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3187 if (*s != '=')
f85893a1 3188 sv_catpvn(sv, start, end - start);
70c94a19
RR
3189 else {
3190 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3191 /* Don't use NUL as q// delimiter here, this string goes in the
3192 * environment. */
3193 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3194 }
f85893a1 3195 s = end;
184f32ec 3196 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3197 SvREFCNT_dec(sv);
4633a7c4 3198 }
ed094faf 3199 if (!PL_perldb) {
3280af22 3200 PL_perldb = PERLDB_ALL;
a0d0e21e 3201 init_debugger();
ed094faf 3202 }
79072805
LW
3203 return s;
3204 case 'D':
0453d815 3205 {
79072805 3206#ifdef DEBUGGING
f20b2998 3207 forbid_setid('D', FALSE);
b4ab917c 3208 s++;
dd374669 3209 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3210#else /* !DEBUGGING */
0453d815 3211 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3212 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3213 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3214 for (s++; isWORDCHAR(*s); s++) ;
79072805 3215#endif
79072805 3216 return s;
2b5060ae 3217 NOT_REACHED; /* NOTREACHED */
0453d815 3218 }
4633a7c4 3219 case 'h':
b6f82619 3220 usage();
2b5060ae
DM
3221 NOT_REACHED; /* NOTREACHED */
3222
79072805 3223 case 'i':
43c5f42d 3224 Safefree(PL_inplace);
c030f24b
GH
3225#if defined(__CYGWIN__) /* do backup extension automagically */
3226 if (*(s+1) == '\0') {
c86a4f2e 3227 PL_inplace = savepvs(".bak");
c030f24b
GH
3228 return s+1;
3229 }
3230#endif /* __CYGWIN__ */
5ef5d758 3231 {
d4c19fe8 3232 const char * const start = ++s;
5ef5d758
NC
3233 while (*s && !isSPACE(*s))
3234 ++s;
3235
3236 PL_inplace = savepvn(start, s - start);
3237 }
7b8d334a 3238 if (*s) {
5ef5d758 3239 ++s;
7b8d334a 3240 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3241 s++;
7b8d334a 3242 }
fb73857a 3243 return s;
4e49a025 3244 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3245 forbid_setid('I', FALSE);
fb73857a
PP
3246 ++s;
3247 while (*s && isSPACE(*s))
3248 ++s;
3249 if (*s) {
c7030b81 3250 const char *e, *p;
0df16ed7
GS
3251 p = s;
3252 /* ignore trailing spaces (possibly followed by other switches) */
3253 do {
3254 for (e = p; *e && !isSPACE(*e); e++) ;
3255 p = e;
3256 while (isSPACE(*p))
3257 p++;
3258 } while (*p && *p != '-');
55b4bc1c 3259 incpush(s, e-s,
e28f3139 3260 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3261 s = p;
3262 if (*s == '-')
3263 s++;
79072805
LW
3264 }
3265 else
a67e862a 3266 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3267 return s;
79072805 3268 case 'l':
3280af22 3269 PL_minus_l = TRUE;
79072805 3270 s++;
7889fe52
NIS
3271 if (PL_ors_sv) {
3272 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3273 PL_ors_sv = NULL;
7889fe52 3274 }
79072805 3275 if (isDIGIT(*s)) {
53305cf1 3276 I32 flags = 0;
a3b680e6 3277 STRLEN numlen;
396482e1 3278 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3279 numlen = 3 + (*s == '0');
3280 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3281 s += numlen;
3282 }
3283 else {
8bfdd7d9 3284 if (RsPARA(PL_rs)) {
396482e1 3285 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3286 }
3287 else {
8bfdd7d9 3288 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3289 }
79072805
LW
3290 }
3291 return s;
1a30305b 3292 case 'M':
f20b2998 3293 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3294 /* FALLTHROUGH */
1a30305b 3295 case 'm':
f20b2998 3296 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3297 if (*++s) {
c7030b81 3298 const char *start;
b64cb68c 3299 const char *end;
11343788 3300 SV *sv;
e1ec3a88 3301 const char *use = "use ";
0544e6df 3302 bool colon = FALSE;
a5f75d66 3303 /* -M-foo == 'no foo' */
d0043bd1
NC
3304 /* Leading space on " no " is deliberate, to make both
3305 possibilities the same length. */
3306 if (*s == '-') { use = " no "; ++s; }
3307 sv = newSVpvn(use,4);
a5f75d66 3308 start = s;
1a30305b 3309 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3310 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3311 if( *s++ == ':' ) {
3312 if( *s == ':' )
3313 s++;
3314 else
3315 colon = TRUE;
3316 }
3317 }
3318 if (s == start)
3319 Perl_croak(aTHX_ "Module name required with -%c option",
3320 option);
3321 if (colon)
3322 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3323 "contains single ':'",
63da6837 3324 (int)(s - start), start, option);
b64cb68c 3325 end = s + strlen(s);
c07a80fd 3326 if (*s != '=') {
b64cb68c 3327 sv_catpvn(sv, start, end - start);
0544e6df 3328 if (option == 'm') {
c07a80fd 3329 if (*s != '\0')
cea2e8a9 3330 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3331 sv_catpvs( sv, " ()");
c07a80fd
PP
3332 }
3333 } else {
11343788 3334 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3335 /* Use NUL as q''-delimiter. */
3336 sv_catpvs(sv, " split(/,/,q\0");
3337 ++s;
3338 sv_catpvn(sv, s, end - s);
396482e1 3339 sv_catpvs(sv, "\0)");
c07a80fd 3340 }
b64cb68c 3341 s = end;
29a861e7 3342 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3343 }
3344 else
0544e6df 3345 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3346 return s;
79072805 3347 case 'n':
3280af22 3348 PL_minus_n = TRUE;
79072805
LW
3349 s++;
3350 return s;
3351 case 'p':
3280af22 3352 PL_minus_p = TRUE;
79072805
LW
3353 s++;
3354 return s;
3355 case 's':
f20b2998 3356 forbid_setid('s', FALSE);
3280af22 3357 PL_doswitches = TRUE;
79072805
LW
3358 s++;
3359 return s;
6537fe72 3360 case 't':
27a6968b 3361 case 'T':
dc6d7f5c 3362#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3363 /* silently ignore */
dc6d7f5c 3364#elif defined(NO_TAINT_SUPPORT)
3231f579 3365 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3366 "Cowardly refusing to run with -t or -T flags");
3367#else
3368 if (!TAINTING_get)
27a6968b 3369 TOO_LATE_FOR(*s);
284167a5 3370#endif
6537fe72 3371 s++;
463ee0b2 3372 return s;
79072805 3373 case 'u':
3280af22 3374 PL_do_undump = TRUE;
79072805
LW
3375 s++;
3376 return s;
3377 case 'U':
3280af22 3378 PL_unsafe = TRUE;
79072805
LW
3379 s++;
3380 return s;
3381 case 'v':
c4bc78d9
NC
3382 minus_v();
3383 case 'w':
3384 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3385 PL_dowarn |= G_WARN_ON;
3386 }
3387 s++;
3388 return s;
3389 case 'W':
3390 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3391 if (!specialWARN(PL_compiling.cop_warnings))
3392 PerlMemShared_free(PL_compiling.cop_warnings);
3393 PL_compiling.cop_warnings = pWARN_ALL ;
3394 s++;
3395 return s;
3396 case 'X':
3397 PL_dowarn = G_WARN_ALL_OFF;
3398 if (!specialWARN(PL_compiling.cop_warnings))
3399 PerlMemShared_free(PL_compiling.cop_warnings);
3400 PL_compiling.cop_warnings = pWARN_NONE ;
3401 s++;
3402 return s;
3403 case '*':
3404 case ' ':
3405 while( *s == ' ' )
3406 ++s;
3407 if (s[0] == '-') /* Additional switches on #! line. */
3408 return s+1;
3409 break;
3410 case '-':
3411 case 0:
3412#if defined(WIN32) || !defined(PERL_STRICT_CR)
3413 case '\r':
3414#endif
3415 case '\n':
3416 case '\t':
3417 break;
3418#ifdef ALTERNATE_SHEBANG
3419 case 'S': /* OS/2 needs -S on "extproc" line. */
3420 break;
3421#endif
4bb78d63
CB
3422 case 'e': case 'f': case 'x': case 'E':
3423#ifndef ALTERNATE_SHEBANG
3424 case 'S':
3425#endif
3426 case 'V':
c4bc78d9 3427 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3428 default:
3429 Perl_croak(aTHX_
3430 "Unrecognized switch: -%.1s (-h will show valid options)",s
3431 );
c4bc78d9
NC
3432 }
3433 return NULL;
3434}
3435
3436
3437STATIC void
3438S_minus_v(pTHX)
3439{
fc3381af 3440 PerlIO * PIO_stdout;
46807d8e 3441 {
709aee94
DD
3442 const char * const level_str = "v" PERL_VERSION_STRING;
3443 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3444#ifdef PERL_PATCHNUM
709aee94 3445 SV* level;
23d483e2 3446# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3447 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3448# else
709aee94 3449 static const char num [] = PERL_PATCHNUM;
23d483e2 3450# endif
fc3381af 3451 {
709aee94
DD
3452 const STRLEN num_len = sizeof(num)-1;
3453 /* A very advanced compiler would fold away the strnEQ
3454 and this whole conditional, but most (all?) won't do it.
3455 SV level could also be replaced by with preprocessor
3456 catenation.
3457 */
3458 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3459 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3460 of the interp so it might contain format characters
3461 */
3462 level = newSVpvn(num, num_len);
fc3381af 3463 } else {
709aee94 3464 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3465 }
46807d8e 3466 }
709aee94
DD
3467#else
3468 SV* level = newSVpvn(level_str, level_len);
3469#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3470 PIO_stdout = PerlIO_stdout();
3471 PerlIO_printf(PIO_stdout,
ded326e4
DG
3472 "\nThis is perl " STRINGIFY(PERL_REVISION)
3473 ", version " STRINGIFY(PERL_VERSION)
3474 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3475 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3476 );
709aee94 3477 SvREFCNT_dec_NN(level);
46807d8e 3478 }
fb73857a
PP
3479#if defined(LOCAL_PATCH_COUNT)
3480 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3481 PerlIO_printf(PIO_stdout,
b0e47665
GS
3482 "\n(with %d registered patch%s, "
3483 "see perl -V for more detail)",
bb7a0f54 3484 LOCAL_PATCH_COUNT,