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Fix some pedantic pod erros in Thread::Queue
[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
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150perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
155{
156 PerlInterpreter *my_perl;
7918f24d
NC
157
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
159
9f653bb5 160 /* Newx() needs interpreter, so call malloc() instead */
32e30700 161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 162 S_init_tls_and_interp(my_perl);
32e30700
GS
163 Zero(my_perl, 1, PerlInterpreter);
164 PL_Mem = ipM;
7766f137
GS
165 PL_MemShared = ipMS;
166 PL_MemParse = ipMP;
32e30700
GS
167 PL_Env = ipE;
168 PL_StdIO = ipStd;
169 PL_LIO = ipLIO;
170 PL_Dir = ipD;
171 PL_Sock = ipS;
172 PL_Proc = ipP;
7cb608b5 173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 174
32e30700
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175 return my_perl;
176}
177#else
954c1994
GS
178
179/*
ccfc67b7
JH
180=head1 Embedding Functions
181
954c1994
GS
182=for apidoc perl_alloc
183
184Allocates a new Perl interpreter. See L<perlembed>.
185
186=cut
187*/
188
93a17b20 189PerlInterpreter *
cea2e8a9 190perl_alloc(void)
79072805 191{
cea2e8a9 192 PerlInterpreter *my_perl;
79072805 193
9f653bb5 194 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 196
e6827a76 197 S_init_tls_and_interp(my_perl);
7cb608b5 198#ifndef PERL_TRACK_MEMPOOL
07409e01 199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
200#else
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
203 return my_perl;
204#endif
79072805 205}
32e30700 206#endif /* PERL_IMPLICIT_SYS */
79072805 207
954c1994
GS
208/*
209=for apidoc perl_construct
210
211Initializes a new Perl interpreter. See L<perlembed>.
212
213=cut
214*/
215
79072805 216void
0cb96387 217perl_construct(pTHXx)
79072805 218{
27da23d5 219 dVAR;
7918f24d
NC
220
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
222
8990e307 223#ifdef MULTIPLICITY
54aff467 224 init_interp();
ac27b0f5 225 PL_perl_destruct_level = 1;
54aff467 226#else
7918f24d 227 PERL_UNUSED_ARG(my_perl);
54aff467
GS
228 if (PL_perl_destruct_level > 0)
229 init_interp();
230#endif
34caed6d
DM
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
75d476e2
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233#ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
235#endif
236
0d96b528 237 init_constants();
34caed6d
DM
238
239 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
241
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 243#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 244 PL_pidstatus = newHV();
ca0c25f6 245#endif
79072805 246
396482e1 247 PL_rs = newSVpvs("\n");
dc92893f 248
cea2e8a9 249 init_stacks();
79072805 250
748a9306 251 init_ids();
a5f75d66 252
312caa8e 253 JMPENV_BOOTSTRAP;
f86702cc
PP
254 STATUS_ALL_SUCCESS;
255
0672f40e 256 init_i18nl10n(1);
0b5b802d 257
ab821d7f 258#if defined(LOCAL_PATCH_COUNT)
3280af22 259 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
260#endif
261
52853b95
GS
262#ifdef HAVE_INTERP_INTERN
263 sys_intern_init();
264#endif
265
3a1ee7e8 266 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 267
3280af22
NIS
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 270 PL_errors = newSVpvs("");
76f68e9b
MHM
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 274#ifdef USE_ITHREADS
402d2eb1
NC
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 278 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 280#endif
e5dd39fc 281#ifdef USE_REENTRANT_API
59bd0823 282 Perl_reentrant_init(aTHX);
e5dd39fc 283#endif
7dc86639
YO
284#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
290 *
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
295 }
296#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
297
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
301 PL_strtab = newHV();
302
3d47000e
AB
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
305
a38ab475
RZ
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
307
2f42fcb0
JH
308#ifndef PERL_MICRO
309# ifdef USE_ENVIRON_ARRAY
0631ea03 310 PL_origenviron = environ;
2f42fcb0 311# endif
0631ea03
AB
312#endif
313
5311654c 314 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 315 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
b6c36746 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB
324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 327
27da23d5
JH
328#ifdef HAS_MMAP
329 if (!PL_mmap_page_size) {
330#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
331 {
332 SETERRNO(0, SS_NORMAL);
333# ifdef _SC_PAGESIZE
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
335# else
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
337# endif
338 if ((long) PL_mmap_page_size < 0) {
339 if (errno) {
44f8325f 340 SV * const error = ERRSV;
d4c19fe8 341 SvUPGRADE(error, SVt_PV);
0510663f 342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
343 }
344 else
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
346 }
347 }
348#else
349# ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
351# else
352# if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
354# endif
355# endif
356#endif
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
360 }
361#endif /* HAS_MMAP */
362
363#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
368#endif
369
7d113631
NC
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
371
a3e6e81e 372 PL_registered_mros = newHV();
9e169432
NC
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
a3e6e81e 375
7b8dd5f4
KW
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 392 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
393 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
394 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
7b8dd5f4 395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC
441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC
449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
462 abort();
463 }
bf357333
NC
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
466 abort();
467 }
468
808ad2d0
NC
469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC
480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
491
808ad2d0
NC
492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC
511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS
516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG
539 assert(PL_scopestack_ix == 1);
540
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH
549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
22ff3130
HS
553 UV uv;
554 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
555 i = (int)uv;
556 else
557 i = 0;
96e440d2 558 }
36e77d41
DD
559#ifdef DEBUGGING
560 if (destruct_level < i) destruct_level = i;
561#endif
562#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
563 /* RT #114496, for perl_free */
564 PL_perl_destruct_level = i;
36e77d41 565#endif
5f05dabc 566 }
4633a7c4
LW
567 }
568#endif
569
27da23d5 570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
571 dJMPENV;
572 int x = 0;
573
574 JMPENV_PUSH(x);
1b6737cc 575 PERL_UNUSED_VAR(x);
9ebf26ad 576 if (PL_endav && !PL_minus_c) {
ca7b837b 577 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 578 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 579 }
f3faeb53 580 JMPENV_POP;
26f423df 581 }
f3faeb53 582 LEAVE;
a0d0e21e 583 FREETMPS;
3d22c4f0 584 assert(PL_scopestack_ix == 0);
a0d0e21e 585
e00b64d4 586 /* Need to flush since END blocks can produce output */
f13a2bc0 587 my_fflush_all();
e00b64d4 588
75d476e2
SM
589#ifdef PERL_TRACE_OPS
590 /* If we traced all Perl OP usage, report and clean up */
591 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
592 for (i = 0; i <= OP_max; ++i) {
593 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
594 PL_op_exec_cnt[i] = 0;
595 }
596 /* Utility slot for easily doing little tracing experiments in the runloop: */
597 if (PL_op_exec_cnt[OP_max+1] != 0)
598 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
599 PerlIO_printf(Perl_debug_log, "\n");
600#endif
601
602
16c91539 603 if (PL_threadhook(aTHX)) {
62375a60 604 /* Threads hook has vetoed further cleanup */
c301d606 605 PL_veto_cleanup = TRUE;
37038d91 606 return STATUS_EXIT;
62375a60
NIS
607 }
608
2aa47728
NC
609#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
610 if (destruct_level != 0) {
611 /* Fork here to create a child. Our child's job is to preserve the
612 state of scalars prior to destruction, so that we can instruct it
613 to dump any scalars that we later find have leaked.
614 There's no subtlety in this code - it assumes POSIX, and it doesn't
615 fail gracefully */
616 int fd[2];
617
618 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
619 perror("Debug leaking scalars socketpair failed");
620 abort();
621 }
622
623 child = fork();
624 if(child == -1) {
625 perror("Debug leaking scalars fork failed");
626 abort();
627 }
628 if (!child) {
629 /* We are the child */
3125a5a4
NC
630 const int sock = fd[1];
631 const int debug_fd = PerlIO_fileno(Perl_debug_log);
632 int f;
808ad2d0
NC
633 const char *where;
634 /* Our success message is an integer 0, and a char 0 */
b61433a9 635 static const char success[sizeof(int) + 1] = {0};
3125a5a4 636
2aa47728 637 close(fd[0]);
2aa47728 638
3125a5a4
NC
639 /* We need to close all other file descriptors otherwise we end up
640 with interesting hangs, where the parent closes its end of a
641 pipe, and sits waiting for (another) child to terminate. Only
642 that child never terminates, because it never gets EOF, because
bf357333
NC
643 we also have the far end of the pipe open. We even need to
644 close the debugging fd, because sometimes it happens to be one
645 end of a pipe, and a process is waiting on the other end for
646 EOF. Normally it would be closed at some point earlier in
647 destruction, but if we happen to cause the pipe to remain open,
648 EOF never occurs, and we get an infinite hang. Hence all the
649 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
650
651 f = sysconf(_SC_OPEN_MAX);
652 if(f < 0) {
808ad2d0
NC
653 where = "sysconf failed";
654 goto abort;
3125a5a4
NC
655 }
656 while (f--) {
657 if (f == sock)
658 continue;
3125a5a4
NC
659 close(f);
660 }
661
2aa47728
NC
662 while (1) {
663 SV *target;
bf357333
NC
664 union control_un control;
665 struct msghdr msg;
666 struct iovec vec[1];
667 struct cmsghdr *cmptr;
668 ssize_t got;
669 int got_fd;
670
671 msg.msg_control = control.control;
672 msg.msg_controllen = sizeof(control.control);
673 /* We're a connected socket so we don't need a source */
674 msg.msg_name = NULL;
675 msg.msg_namelen = 0;
676 msg.msg_iov = vec;
c3caa5c3 677 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
678
679 vec[0].iov_base = (void*)&target;
680 vec[0].iov_len = sizeof(target);
681
682 got = recvmsg(sock, &msg, 0);
2aa47728
NC
683
684 if(got == 0)
685 break;
686 if(got < 0) {
808ad2d0
NC
687 where = "recv failed";
688 goto abort;
2aa47728
NC
689 }
690 if(got < sizeof(target)) {
808ad2d0
NC
691 where = "short recv";
692 goto abort;
2aa47728 693 }
bf357333 694
808ad2d0
NC
695 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
696 where = "no cmsg";
697 goto abort;
698 }
699 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
700 where = "wrong cmsg_len";
701 goto abort;
702 }
703 if(cmptr->cmsg_level != SOL_SOCKET) {
704 where = "wrong cmsg_level";
705 goto abort;
706 }
707 if(cmptr->cmsg_type != SCM_RIGHTS) {
708 where = "wrong cmsg_type";
709 goto abort;
710 }
bf357333
NC
711
712 got_fd = *(int*)CMSG_DATA(cmptr);
713 /* For our last little bit of trickery, put the file descriptor
714 back into Perl_debug_log, as if we never actually closed it
715 */
808ad2d0
NC
716 if(got_fd != debug_fd) {
717 if (dup2(got_fd, debug_fd) == -1) {
718 where = "dup2";
719 goto abort;
720 }
721 }
2aa47728 722 sv_dump(target);
bf357333 723
2aa47728
NC
724 PerlIO_flush(Perl_debug_log);
725
808ad2d0 726 got = write(sock, &success, sizeof(success));
2aa47728
NC
727
728 if(got < 0) {
808ad2d0
NC
729 where = "write failed";
730 goto abort;
2aa47728 731 }
808ad2d0
NC
732 if(got < sizeof(success)) {
733 where = "short write";
734 goto abort;
2aa47728
NC
735 }
736 }
737 _exit(0);
808ad2d0
NC
738 abort:
739 {
740 int send_errno = errno;
741 unsigned char length = (unsigned char) strlen(where);
742 struct iovec failure[3] = {
743 {(void*)&send_errno, sizeof(send_errno)},
744 {&length, 1},
745 {(void*)where, length}
746 };
747 int got = writev(sock, failure, 3);
748 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
749 in the parent if we try to read from the socketpair after the
750 child has exited, even if there was data to read.
751 So sleep a bit to give the parent a fighting chance of
752 reading the data. */
753 sleep(2);
754 _exit((got == -1) ? errno : 0);
755 }
bf357333 756 /* End of child. */
2aa47728 757 }
41e4abd8 758 PL_dumper_fd = fd[0];
2aa47728
NC
759 close(fd[1]);
760 }
761#endif
762
ff0cee69
PP
763 /* We must account for everything. */
764
765 /* Destroy the main CV and syntax tree */
37e77c23
FC
766 /* Set PL_curcop now, because destroying ops can cause new SVs
767 to be generated in Perl_pad_swipe, and when running with
768 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
769 op from which the filename structure member is copied. */
17fbfdf6 770 PL_curcop = &PL_compiling;
3280af22 771 if (PL_main_root) {
4e380990
DM
772 /* ensure comppad/curpad to refer to main's pad */
773 if (CvPADLIST(PL_main_cv)) {
774 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 775 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 776 }
3280af22 777 op_free(PL_main_root);
5f66b61c 778 PL_main_root = NULL;
a0d0e21e 779 }
5f66b61c 780 PL_main_start = NULL;
aac9d523
DM
781 /* note that PL_main_cv isn't usually actually freed at this point,
782 * due to the CvOUTSIDE refs from subs compiled within it. It will
783 * get freed once all the subs are freed in sv_clean_all(), for
784 * destruct_level > 0 */
3280af22 785 SvREFCNT_dec(PL_main_cv);
601f1833 786 PL_main_cv = NULL;
ca7b837b 787 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 788
13621cfb
NIS
789 /* Tell PerlIO we are about to tear things apart in case
790 we have layers which are using resources that should
791 be cleaned up now.
792 */
793
794 PerlIO_destruct(aTHX);
795
ddf23d4a
SM
796 /*
797 * Try to destruct global references. We do this first so that the
798 * destructors and destructees still exist. Some sv's might remain.
799 * Non-referenced objects are on their own.
800 */
801 sv_clean_objs();
8990e307 802
5cd24f17 803 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 804 SvREFCNT_dec(PL_warnhook);
a0714e2c 805 PL_warnhook = NULL;
3280af22 806 SvREFCNT_dec(PL_diehook);
a0714e2c 807 PL_diehook = NULL;
5cd24f17 808
4b556e6c 809 /* call exit list functions */
3280af22 810 while (PL_exitlistlen-- > 0)
acfe0abc 811 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 812
3280af22 813 Safefree(PL_exitlist);
4b556e6c 814
1c4916e5
CB
815 PL_exitlist = NULL;
816 PL_exitlistlen = 0;
817
a3e6e81e
NC
818 SvREFCNT_dec(PL_registered_mros);
819
551a8b83 820 /* jettison our possibly duplicated environment */
4b647fb0
DM
821 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
822 * so we certainly shouldn't free it here
823 */
2f42fcb0 824#ifndef PERL_MICRO
4b647fb0 825#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 826 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
827#ifdef USE_ITHREADS
828 /* only main thread can free environ[0] contents */
829 && PL_curinterp == aTHX
830#endif
831 )
832 {
551a8b83
JH
833 I32 i;
834
835 for (i = 0; environ[i]; i++)
4b420006 836 safesysfree(environ[i]);
0631ea03 837
4b420006
JH
838 /* Must use safesysfree() when working with environ. */
839 safesysfree(environ);
551a8b83
JH
840
841 environ = PL_origenviron;
842 }
843#endif
2f42fcb0 844#endif /* !PERL_MICRO */
551a8b83 845
30985c42
JH
846 if (destruct_level == 0) {
847
848 DEBUG_P(debprofdump());
849
850#if defined(PERLIO_LAYERS)
851 /* No more IO - including error messages ! */
852 PerlIO_cleanup(aTHX);
853#endif
854
855 CopFILE_free(&PL_compiling);
30985c42
JH
856
857 /* The exit() function will do everything that needs doing. */
858 return STATUS_EXIT;
859 }
860
9fa9f06b
KW
861 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
862
5f8cb046
DM
863#ifdef USE_ITHREADS
864 /* the syntax tree is shared between clones
865 * so op_free(PL_main_root) only ReREFCNT_dec's
866 * REGEXPs in the parent interpreter
867 * we need to manually ReREFCNT_dec for the clones
868 */
0547a729
DM
869 {
870 I32 i = AvFILLp(PL_regex_padav);
871 SV **ary = AvARRAY(PL_regex_padav);
872
873 for (; i; i--) {
874 SvREFCNT_dec(ary[i]);
875 ary[i] = &PL_sv_undef;
876 }
877 }
5f8cb046
DM
878#endif
879
0547a729 880
ad64d0ec 881 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
882 PL_stashcache = NULL;
883
5f05dabc
PP
884 /* loosen bonds of global variables */
885
2f9285f8
DM
886 /* XXX can PL_parser still be non-null here? */
887 if(PL_parser && PL_parser->rsfp) {
888 (void)PerlIO_close(PL_parser->rsfp);
889 PL_parser->rsfp = NULL;
8ebc5c01
PP
890 }
891
84386e14
RGS
892 if (PL_minus_F) {
893 Safefree(PL_splitstr);
894 PL_splitstr = NULL;
895 }
896
8ebc5c01 897 /* switches */
3280af22
NIS
898 PL_minus_n = FALSE;
899 PL_minus_p = FALSE;
900 PL_minus_l = FALSE;
901 PL_minus_a = FALSE;
902 PL_minus_F = FALSE;
903 PL_doswitches = FALSE;
599cee73 904 PL_dowarn = G_WARN_OFF;
1a904fc8 905#ifdef PERL_SAWAMPERSAND
d3b97530 906 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 907#endif
3280af22
NIS
908 PL_unsafe = FALSE;
909
910 Safefree(PL_inplace);
bd61b366 911 PL_inplace = NULL;
a7cb1f99 912 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
913
914 if (PL_e_script) {
915 SvREFCNT_dec(PL_e_script);
a0714e2c 916 PL_e_script = NULL;
8ebc5c01
PP
917 }
918
bf9cdc68
RG
919 PL_perldb = 0;
920
8ebc5c01
PP
921 /* magical thingies */
922
e23d9e2f
CS
923 SvREFCNT_dec(PL_ofsgv); /* *, */
924 PL_ofsgv = NULL;
5f05dabc 925
7889fe52 926 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 927 PL_ors_sv = NULL;
8ebc5c01 928
3280af22 929 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 930 PL_rs = NULL;
dc92893f 931
d33b2eba 932 Safefree(PL_osname); /* $^O */
bd61b366 933 PL_osname = NULL;
5f05dabc 934
3280af22 935 SvREFCNT_dec(PL_statname);
a0714e2c
SS
936 PL_statname = NULL;
937 PL_statgv = NULL;
5f05dabc 938
8ebc5c01
PP
939 /* defgv, aka *_ should be taken care of elsewhere */
940
7d5ea4e7
GS
941 /* float buffer */
942 Safefree(PL_efloatbuf);
bd61b366 943 PL_efloatbuf = NULL;
7d5ea4e7
GS
944 PL_efloatsize = 0;
945
8ebc5c01 946 /* startup and shutdown function lists */
3280af22 947 SvREFCNT_dec(PL_beginav);
5a837c8f 948 SvREFCNT_dec(PL_beginav_save);
3280af22 949 SvREFCNT_dec(PL_endav);
7d30b5c4 950 SvREFCNT_dec(PL_checkav);
ece599bd 951 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
952 SvREFCNT_dec(PL_unitcheckav);
953 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 954 SvREFCNT_dec(PL_initav);
7d49f689
NC
955 PL_beginav = NULL;
956 PL_beginav_save = NULL;
957 PL_endav = NULL;
958 PL_checkav = NULL;
959 PL_checkav_save = NULL;
3c10abe3
AG
960 PL_unitcheckav = NULL;
961 PL_unitcheckav_save = NULL;
7d49f689 962 PL_initav = NULL;
5618dfe8 963
8ebc5c01 964 /* shortcuts just get cleared */
a0714e2c
SS
965 PL_hintgv = NULL;
966 PL_errgv = NULL;
a0714e2c
SS
967 PL_argvoutgv = NULL;
968 PL_stdingv = NULL;
969 PL_stderrgv = NULL;
970 PL_last_in_gv = NULL;
a0714e2c
SS
971 PL_DBsingle = NULL;
972 PL_DBtrace = NULL;
973 PL_DBsignal = NULL;
a6d69523
TC
974 PL_DBsingle_iv = 0;
975 PL_DBtrace_iv = 0;
976 PL_DBsignal_iv = 0;
601f1833 977 PL_DBcv = NULL;
7d49f689 978 PL_dbargs = NULL;
5c284bb0 979 PL_debstash = NULL;
8ebc5c01 980
cf93a474 981 SvREFCNT_dec(PL_envgv);
f03015cd 982 SvREFCNT_dec(PL_incgv);
722fa0e9 983 SvREFCNT_dec(PL_argvgv);
475b1e90 984 SvREFCNT_dec(PL_replgv);
8cece913
FC
985 SvREFCNT_dec(PL_DBgv);
986 SvREFCNT_dec(PL_DBline);
987 SvREFCNT_dec(PL_DBsub);
cf93a474 988 PL_envgv = NULL;
f03015cd 989 PL_incgv = NULL;
722fa0e9 990 PL_argvgv = NULL;
475b1e90 991 PL_replgv = NULL;
8cece913
FC
992 PL_DBgv = NULL;
993 PL_DBline = NULL;
994 PL_DBsub = NULL;
995
7a1c5554 996 SvREFCNT_dec(PL_argvout_stack);
7d49f689 997 PL_argvout_stack = NULL;
8ebc5c01 998
5c831c24 999 SvREFCNT_dec(PL_modglobal);
5c284bb0 1000 PL_modglobal = NULL;
5c831c24 1001 SvREFCNT_dec(PL_preambleav);
7d49f689 1002 PL_preambleav = NULL;
5c831c24 1003 SvREFCNT_dec(PL_subname);
a0714e2c 1004 PL_subname = NULL;
ca0c25f6 1005#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1006 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1007 PL_pidstatus = NULL;
ca0c25f6 1008#endif
5c831c24 1009 SvREFCNT_dec(PL_toptarget);
a0714e2c 1010 PL_toptarget = NULL;
5c831c24 1011 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1012 PL_bodytarget = NULL;
1013 PL_formtarget = NULL;
5c831c24 1014
d33b2eba 1015 /* free locale stuff */
b9582b6a 1016#ifdef USE_LOCALE_COLLATE
d33b2eba 1017 Safefree(PL_collation_name);
bd61b366 1018 PL_collation_name = NULL;
b9582b6a 1019#endif
d33b2eba 1020
b9582b6a 1021#ifdef USE_LOCALE_NUMERIC
d33b2eba 1022 Safefree(PL_numeric_name);
bd61b366 1023 PL_numeric_name = NULL;
a453c169 1024 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1025 PL_numeric_radix_sv = NULL;
b9582b6a 1026#endif
d33b2eba 1027
9c0b6888
KW
1028 /* clear character classes */
1029 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1030 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1031 PL_utf8_swash_ptrs[i] = NULL;
1032 }
5c831c24
GS
1033 SvREFCNT_dec(PL_utf8_mark);
1034 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1035 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1036 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1037 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1038 SvREFCNT_dec(PL_utf8_idstart);
1039 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1040 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1041 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1042 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1043 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1048#ifdef USE_LOCALE_CTYPE
780fcc9f 1049 SvREFCNT_dec(PL_warn_locale);
5b7de470 1050#endif
a0714e2c
SS
1051 PL_utf8_mark = NULL;
1052 PL_utf8_toupper = NULL;
1053 PL_utf8_totitle = NULL;
1054 PL_utf8_tolower = NULL;
1055 PL_utf8_tofold = NULL;
1056 PL_utf8_idstart = NULL;
1057 PL_utf8_idcont = NULL;
2726813d 1058 PL_utf8_foldclosures = NULL;
9fa9f06b 1059 PL_AboveLatin1 = NULL;
e0a1ff7a 1060 PL_InBitmap = NULL;
9fa9f06b 1061 PL_HasMultiCharFold = NULL;
5b7de470 1062#ifdef USE_LOCALE_CTYPE
780fcc9f 1063 PL_warn_locale = NULL;
5b7de470 1064#endif
9fa9f06b
KW
1065 PL_Latin1 = NULL;
1066 PL_NonL1NonFinalFold = NULL;
1067 PL_UpperLatin1 = NULL;
86f72d56 1068 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1069 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1070 PL_XPosix_ptrs[i] = NULL;
86f72d56 1071 }
64935bc6 1072 PL_GCB_invlist = NULL;
06ae2722 1073 PL_SB_invlist = NULL;
ae3bb8ea 1074 PL_WB_invlist = NULL;
5c831c24 1075
971a9dd3 1076 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1077 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1078 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1079 cophh_free(CopHINTHASH_get(&PL_compiling));
1080 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1081 CopFILE_free(&PL_compiling);
5c831c24 1082
a0d0e21e 1083 /* Prepare to destruct main symbol table. */
5f05dabc 1084
3280af22 1085 hv = PL_defstash;
ca556bcd
DM
1086 /* break ref loop *:: <=> %:: */
1087 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1088 PL_defstash = 0;
a0d0e21e 1089 SvREFCNT_dec(hv);
5c831c24 1090 SvREFCNT_dec(PL_curstname);
a0714e2c 1091 PL_curstname = NULL;
a0d0e21e 1092
5a844595
GS
1093 /* clear queued errors */
1094 SvREFCNT_dec(PL_errors);
a0714e2c 1095 PL_errors = NULL;
5a844595 1096
dd69841b
BB
1097 SvREFCNT_dec(PL_isarev);
1098
a0d0e21e 1099 FREETMPS;
9b387841 1100 if (destruct_level >= 2) {
3280af22 1101 if (PL_scopestack_ix != 0)
9b387841
NC
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1104 (long)PL_scopestack_ix);
3280af22 1105 if (PL_savestack_ix != 0)
9b387841
NC
1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1107 "Unbalanced saves: %ld more saves than restores\n",
1108 (long)PL_savestack_ix);
3280af22 1109 if (PL_tmps_floor != -1)
9b387841
NC
1110 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1111 (long)PL_tmps_floor + 1);
a0d0e21e 1112 if (cxstack_ix != -1)
9b387841
NC
1113 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1114 (long)cxstack_ix + 1);
a0d0e21e 1115 }
8990e307 1116
0547a729
DM
1117#ifdef USE_ITHREADS
1118 SvREFCNT_dec(PL_regex_padav);
1119 PL_regex_padav = NULL;
1120 PL_regex_pad = NULL;
1121#endif
1122
776df701 1123#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1124 /* the entries in this list are allocated via SV PVX's, so get freed
1125 * in sv_clean_all */
1126 Safefree(PL_my_cxt_list);
776df701 1127#endif
57bb2458 1128
8990e307 1129 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1130
1131 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1132 while (sv_clean_all() > 2)
5226ed68
JH
1133 ;
1134
23083432
FC
1135#ifdef USE_ITHREADS
1136 Safefree(PL_stashpad); /* must come after sv_clean_all */
1137#endif
1138
d4777f27
GS
1139 AvREAL_off(PL_fdpid); /* no surviving entries */
1140 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1141 PL_fdpid = NULL;
d33b2eba 1142
6c644e78
GS
1143#ifdef HAVE_INTERP_INTERN
1144 sys_intern_clear();
1145#endif
1146
a38ab475
RZ
1147 /* constant strings */
1148 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1149 SvREFCNT_dec(PL_sv_consts[i]);
1150 PL_sv_consts[i] = NULL;
1151 }
1152
6e72f9df
PP
1153 /* Destruct the global string table. */
1154 {
1155 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1156 * so that sv_free() won't fail on them.
80459961
NC
1157 * Now that the global string table is using a single hunk of memory
1158 * for both HE and HEK, we either need to explicitly unshare it the
1159 * correct way, or actually free things here.
6e72f9df 1160 */
80459961
NC
1161 I32 riter = 0;
1162 const I32 max = HvMAX(PL_strtab);
c4420975 1163 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1164 HE *hent = array[0];
1165
6e72f9df 1166 for (;;) {
0453d815 1167 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1168 HE * const next = HeNEXT(hent);
9014280d 1169 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1170 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1171 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1172 Safefree(hent);
1173 hent = next;
6e72f9df
PP
1174 }
1175 if (!hent) {
1176 if (++riter > max)
1177 break;
1178 hent = array[riter];
1179 }
1180 }
80459961
NC
1181
1182 Safefree(array);
1183 HvARRAY(PL_strtab) = 0;
1184 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1185 }
3280af22 1186 SvREFCNT_dec(PL_strtab);
6e72f9df 1187
e652bb2f 1188#ifdef USE_ITHREADS
c21d1a0f 1189 /* free the pointer tables used for cloning */
a0739874 1190 ptr_table_free(PL_ptr_table);
bf9cdc68 1191 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1192#endif
a0739874 1193
d33b2eba
GS
1194 /* free special SVs */
1195
1196 SvREFCNT(&PL_sv_yes) = 0;
1197 sv_clear(&PL_sv_yes);
1198 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1199 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1200
1201 SvREFCNT(&PL_sv_no) = 0;
1202 sv_clear(&PL_sv_no);
1203 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1204 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1205
9f375a43
DM
1206 {
1207 int i;
1208 for (i=0; i<=2; i++) {
1209 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1210 sv_clear(PERL_DEBUG_PAD(i));
1211 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1212 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1213 }
1214 }
1215
0453d815 1216 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1217 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1218
eba0f806
DM
1219#ifdef DEBUG_LEAKING_SCALARS
1220 if (PL_sv_count != 0) {
1221 SV* sva;
1222 SV* sv;
eb578fdb 1223 SV* svend;
eba0f806 1224
ad64d0ec 1225 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1226 svend = &sva[SvREFCNT(sva)];
1227 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1228 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1229 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1230 " flags=0x%"UVxf
fd0854ff 1231 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1232 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1233 "serial %"UVuf"\n",
574b8821
NC
1234 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1235 pTHX__VALUE,
fd0854ff
DM
1236 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1237 sv->sv_debug_line,
1238 sv->sv_debug_inpad ? "for" : "by",
1239 sv->sv_debug_optype ?
1240 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1241 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1242 sv->sv_debug_serial
fd0854ff 1243 );
2aa47728 1244#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1245 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1246#endif
eba0f806
DM
1247 }
1248 }
1249 }
1250 }
2aa47728
NC
1251#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1252 {
1253 int status;
1254 fd_set rset;
1255 /* Wait for up to 4 seconds for child to terminate.
1256 This seems to be the least effort way of timing out on reaping
1257 its exit status. */
1258 struct timeval waitfor = {4, 0};
41e4abd8 1259 int sock = PL_dumper_fd;
2aa47728
NC
1260
1261 shutdown(sock, 1);
1262 FD_ZERO(&rset);
1263 FD_SET(sock, &rset);
1264 select(sock + 1, &rset, NULL, NULL, &waitfor);
1265 waitpid(child, &status, WNOHANG);
1266 close(sock);
1267 }
1268#endif
eba0f806 1269#endif
77abb4c6
NC
1270#ifdef DEBUG_LEAKING_SCALARS_ABORT
1271 if (PL_sv_count)
1272 abort();
1273#endif
bf9cdc68 1274 PL_sv_count = 0;
eba0f806 1275
56a2bab7 1276#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1277 /* No more IO - including error messages ! */
1278 PerlIO_cleanup(aTHX);
1279#endif
1280
9f4bd222 1281 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1282 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1283 for no arg - and will try and SvREFCNT_dec it.
1284 */
1285 SvREFCNT(&PL_sv_undef) = 0;
1286 SvREADONLY_off(&PL_sv_undef);
1287
3280af22 1288 Safefree(PL_origfilename);
bd61b366 1289 PL_origfilename = NULL;
43c5f42d 1290 Safefree(PL_reg_curpm);
dd28f7bb 1291 free_tied_hv_pool();
3280af22 1292 Safefree(PL_op_mask);
cf36064f 1293 Safefree(PL_psig_name);
bf9cdc68 1294 PL_psig_name = (SV**)NULL;
d525a7b2 1295 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1296 {
1297 /* We need to NULL PL_psig_pend first, so that
1298 signal handlers know not to use it */
1299 int *psig_save = PL_psig_pend;
1300 PL_psig_pend = (int*)NULL;
1301 Safefree(psig_save);
1302 }
6e72f9df 1303 nuke_stacks();
284167a5
SM
1304 TAINTING_set(FALSE);
1305 TAINT_WARN_set(FALSE);
3280af22 1306 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1307
a0d0e21e 1308 DEBUG_P(debprofdump());
d33b2eba 1309
b173165c
FC
1310 PL_debug = 0;
1311
e5dd39fc 1312#ifdef USE_REENTRANT_API
10bc17b6 1313 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1314#endif
1315
a24da70b
NC
1316 /* These all point to HVs that are about to be blown away.
1317 Code in core and on CPAN assumes that if the interpreter is re-started
1318 that they will be cleanly NULL or pointing to a valid HV. */
1319 PL_custom_op_names = NULL;
1320 PL_custom_op_descs = NULL;
1321 PL_custom_ops = NULL;
1322
612f20c3
GS
1323 sv_free_arenas();
1324
5d9a96ca
DM
1325 while (PL_regmatch_slab) {
1326 regmatch_slab *s = PL_regmatch_slab;
1327 PL_regmatch_slab = PL_regmatch_slab->next;
1328 Safefree(s);
1329 }
1330
fc36a67e
PP
1331 /* As the absolutely last thing, free the non-arena SV for mess() */
1332
3280af22 1333 if (PL_mess_sv) {
f350b448
NC
1334 /* we know that type == SVt_PVMG */
1335
9c63abab 1336 /* it could have accumulated taint magic */
f350b448
NC
1337 MAGIC* mg;
1338 MAGIC* moremagic;
1339 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1340 moremagic = mg->mg_moremagic;
1341 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1342 && mg->mg_len >= 0)
1343 Safefree(mg->mg_ptr);
1344 Safefree(mg);
9c63abab 1345 }
f350b448 1346
fc36a67e 1347 /* we know that type >= SVt_PV */
8bd4d4c5 1348 SvPV_free(PL_mess_sv);
3280af22
NIS
1349 Safefree(SvANY(PL_mess_sv));
1350 Safefree(PL_mess_sv);
a0714e2c 1351 PL_mess_sv = NULL;
fc36a67e 1352 }
37038d91 1353 return STATUS_EXIT;
79072805
LW
1354}
1355
954c1994
GS
1356/*
1357=for apidoc perl_free
1358
1359Releases a Perl interpreter. See L<perlembed>.
1360
1361=cut
1362*/
1363
79072805 1364void
0cb96387 1365perl_free(pTHXx)
79072805 1366{
5174512c
NC
1367 dVAR;
1368
7918f24d
NC
1369 PERL_ARGS_ASSERT_PERL_FREE;
1370
c301d606
DM
1371 if (PL_veto_cleanup)
1372 return;
1373
7cb608b5 1374#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1375 {
1376 /*
1377 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1378 * value as we're probably hunting memory leaks then
1379 */
36e77d41 1380 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1381 const U32 old_debug = PL_debug;
55ef9aae
MHM
1382 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1383 thread at thread exit. */
4fd0a9b8
NC
1384 if (DEBUG_m_TEST) {
1385 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1386 "free this thread's memory\n");
1387 PL_debug &= ~ DEBUG_m_FLAG;
1388 }
6edcbed6
DD
1389 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1390 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1391 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1392 safesysfree(ptr);
1393 }
4fd0a9b8 1394 PL_debug = old_debug;
55ef9aae
MHM
1395 }
1396 }
7cb608b5
NC
1397#endif
1398
acfe0abc 1399#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1400# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1401 {
acfe0abc 1402# ifdef NETWARE
7af12a34 1403 void *host = nw_internal_host;
7af12a34 1404 PerlMem_free(aTHXx);
7af12a34 1405 nw_delete_internal_host(host);
acfe0abc 1406# else
bdb50480
NC
1407 void *host = w32_internal_host;
1408 PerlMem_free(aTHXx);
7af12a34 1409 win32_delete_internal_host(host);
acfe0abc 1410# endif
7af12a34 1411 }
1c0ca838
GS
1412# else
1413 PerlMem_free(aTHXx);
1414# endif
acfe0abc
GS
1415#else
1416 PerlMem_free(aTHXx);
76e3520e 1417#endif
79072805
LW
1418}
1419
b7f7fff6 1420#if defined(USE_ITHREADS)
aebd1ac7
GA
1421/* provide destructors to clean up the thread key when libperl is unloaded */
1422#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1423
826955bd 1424#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1425#pragma fini "perl_fini"
666ad1ec
GA
1426#elif defined(__sun) && !defined(__GNUC__)
1427#pragma fini (perl_fini)
aebd1ac7
GA
1428#endif
1429
0dbb1585
AL
1430static void
1431#if defined(__GNUC__)
1432__attribute__((destructor))
aebd1ac7 1433#endif
de009b76 1434perl_fini(void)
aebd1ac7 1435{
27da23d5 1436 dVAR;
5c64bffd
NC
1437 if (
1438#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1439 my_vars &&
1440#endif
1441 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1442 FREE_THREAD_KEY;
1443}
1444
1445#endif /* WIN32 */
1446#endif /* THREADS */
1447
4b556e6c 1448void
864dbfa3 1449Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1450{
3280af22
NIS
1451 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1452 PL_exitlist[PL_exitlistlen].fn = fn;
1453 PL_exitlist[PL_exitlistlen].ptr = ptr;
1454 ++PL_exitlistlen;
4b556e6c
JD
1455}
1456
954c1994
GS
1457/*
1458=for apidoc perl_parse
1459
1460Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1461
1462=cut
1463*/
1464
03d9f026
FC
1465#define SET_CURSTASH(newstash) \
1466 if (PL_curstash != newstash) { \
1467 SvREFCNT_dec(PL_curstash); \
1468 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1469 }
1470
79072805 1471int
0cb96387 1472perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1473{
27da23d5 1474 dVAR;
6224f72b 1475 I32 oldscope;
6224f72b 1476 int ret;
db36c5a1 1477 dJMPENV;
8d063cd8 1478
7918f24d
NC
1479 PERL_ARGS_ASSERT_PERL_PARSE;
1480#ifndef MULTIPLICITY
ed6c66dd 1481 PERL_UNUSED_ARG(my_perl);
7918f24d 1482#endif
7dc86639 1483#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1484 {
7dc86639
YO
1485 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1486
22ff3130 1487 if (s && strEQ(s, "1")) {
7dc86639
YO
1488 unsigned char *seed= PERL_HASH_SEED;
1489 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1490 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1491 while (seed < seed_end) {
1492 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1493 }
6a5b4183
YO
1494#ifdef PERL_HASH_RANDOMIZE_KEYS
1495 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1496 PL_HASH_RAND_BITS_ENABLED,
1497 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1498#endif
7dc86639
YO
1499 PerlIO_printf(Perl_debug_log, "\n");
1500 }
b0891165
JH
1501 }
1502#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1503 PL_origargc = argc;
e2975953 1504 PL_origargv = argv;
a0d0e21e 1505
a2722ac9
GA
1506 if (PL_origalen != 0) {
1507 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1508 }
1509 else {
3cb9023d
JH
1510 /* Set PL_origalen be the sum of the contiguous argv[]
1511 * elements plus the size of the env in case that it is
e9137a8e 1512 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1513 * as the maximum modifiable length of $0. In the worst case
1514 * the area we are able to modify is limited to the size of
43c32782 1515 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1516 * --jhi */
e1ec3a88 1517 const char *s = NULL;
54bfe034 1518 int i;
b7249aaf 1519 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1520 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1521 const UV aligned =
43c32782
JH
1522 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1523
1524 /* See if all the arguments are contiguous in memory. Note
1525 * that 'contiguous' is a loose term because some platforms
1526 * align the argv[] and the envp[]. If the arguments look
1527 * like non-aligned, assume that they are 'strictly' or
1528 * 'traditionally' contiguous. If the arguments look like
1529 * aligned, we just check that they are within aligned
1530 * PTRSIZE bytes. As long as no system has something bizarre
1531 * like the argv[] interleaved with some other data, we are
1532 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1533 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1534 while (*s) s++;
1535 for (i = 1; i < PL_origargc; i++) {
1536 if ((PL_origargv[i] == s + 1
43c32782 1537#ifdef OS2
c8941eeb 1538 || PL_origargv[i] == s + 2
43c32782 1539#endif
c8941eeb
JH
1540 )
1541 ||
1542 (aligned &&
1543 (PL_origargv[i] > s &&
1544 PL_origargv[i] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1546 )
1547 {
1548 s = PL_origargv[i];
1549 while (*s) s++;
1550 }
1551 else
1552 break;
54bfe034 1553 }
54bfe034 1554 }
a4a109c2
JD
1555
1556#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1557 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1558 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1559 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1560 ||
1561 (aligned &&
1562 (PL_origenviron[0] > s &&
1563 PL_origenviron[0] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 )
1566 {
9d419b5f 1567#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1568 s = PL_origenviron[0];
1569 while (*s) s++;
1570#endif
bd61b366 1571 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1572 /* Force copy of environment. */
1573 for (i = 1; PL_origenviron[i]; i++) {
1574 if (PL_origenviron[i] == s + 1
1575 ||
1576 (aligned &&
1577 (PL_origenviron[i] > s &&
1578 PL_origenviron[i] <=
1579 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1580 )
1581 {
1582 s = PL_origenviron[i];
1583 while (*s) s++;
1584 }
1585 else
1586 break;
54bfe034 1587 }
43c32782 1588 }
54bfe034 1589 }
a4a109c2
JD
1590#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1591
2d2af554 1592 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1593 }
1594
3280af22 1595 if (PL_do_undump) {
a0d0e21e
LW
1596
1597 /* Come here if running an undumped a.out. */
1598
3280af22
NIS
1599 PL_origfilename = savepv(argv[0]);
1600 PL_do_undump = FALSE;
a0d0e21e 1601 cxstack_ix = -1; /* start label stack again */
748a9306 1602 init_ids();
284167a5 1603 assert (!TAINT_get);
b7975bdd 1604 TAINT;
e2051532 1605 set_caret_X();
b7975bdd 1606 TAINT_NOT;
a0d0e21e
LW
1607 init_postdump_symbols(argc,argv,env);
1608 return 0;
1609 }
1610
3280af22 1611 if (PL_main_root) {
3280af22 1612 op_free(PL_main_root);
5f66b61c 1613 PL_main_root = NULL;
ff0cee69 1614 }
5f66b61c 1615 PL_main_start = NULL;
3280af22 1616 SvREFCNT_dec(PL_main_cv);
601f1833 1617 PL_main_cv = NULL;
79072805 1618
3280af22
NIS
1619 time(&PL_basetime);
1620 oldscope = PL_scopestack_ix;
599cee73 1621 PL_dowarn = G_WARN_OFF;
f86702cc 1622
14dd3ad8 1623 JMPENV_PUSH(ret);
6224f72b 1624 switch (ret) {
312caa8e 1625 case 0:
14dd3ad8 1626 parse_body(env,xsinit);
9ebf26ad 1627 if (PL_unitcheckav) {
3c10abe3 1628 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1629 }
1630 if (PL_checkav) {
ca7b837b 1631 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1632 call_list(oldscope, PL_checkav);
9ebf26ad 1633 }
14dd3ad8
GS
1634 ret = 0;
1635 break;
6224f72b
GS
1636 case 1:
1637 STATUS_ALL_FAILURE;
924ba076 1638 /* FALLTHROUGH */
6224f72b
GS
1639 case 2:
1640 /* my_exit() was called */
3280af22 1641 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1642 LEAVE;
1643 FREETMPS;
03d9f026 1644 SET_CURSTASH(PL_defstash);
9ebf26ad 1645 if (PL_unitcheckav) {
3c10abe3 1646 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1647 }
1648 if (PL_checkav) {
ca7b837b 1649 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1650 call_list(oldscope, PL_checkav);
9ebf26ad 1651 }
37038d91 1652 ret = STATUS_EXIT;
14dd3ad8 1653 break;
6224f72b 1654 case 3:
bf49b057 1655 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1656 ret = 1;
1657 break;
6224f72b 1658 }
14dd3ad8
GS
1659 JMPENV_POP;
1660 return ret;
1661}
1662
4a5df386
NC
1663/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1664 miniperl, and we need to see those flags reflected in the values here. */
1665
1666/* What this returns is subject to change. Use the public interface in Config.
1667 */
1668static void
1669S_Internals_V(pTHX_ CV *cv)
1670{
1671 dXSARGS;
1672#ifdef LOCAL_PATCH_COUNT
1673 const int local_patch_count = LOCAL_PATCH_COUNT;
1674#else
1675 const int local_patch_count = 0;
1676#endif
2dc296d2 1677 const int entries = 3 + local_patch_count;
4a5df386 1678 int i;
fe1c5936 1679 static const char non_bincompat_options[] =
4a5df386
NC
1680# ifdef DEBUGGING
1681 " DEBUGGING"
1682# endif
1683# ifdef NO_MATHOMS
0d311fbe 1684 " NO_MATHOMS"
4a5df386 1685# endif
59b86f4b
DM
1686# ifdef NO_HASH_SEED
1687 " NO_HASH_SEED"
1688# endif
3b0e4ee2
MB
1689# ifdef NO_TAINT_SUPPORT
1690 " NO_TAINT_SUPPORT"
1691# endif
cb26ef7a
MB
1692# ifdef PERL_BOOL_AS_CHAR
1693 " PERL_BOOL_AS_CHAR"
1694# endif
93c10d60
FC
1695# ifdef PERL_COPY_ON_WRITE
1696 " PERL_COPY_ON_WRITE"
1697# endif
4a5df386
NC
1698# ifdef PERL_DISABLE_PMC
1699 " PERL_DISABLE_PMC"
1700# endif
1701# ifdef PERL_DONT_CREATE_GVSV
1702 " PERL_DONT_CREATE_GVSV"
1703# endif
9a044a43
NC
1704# ifdef PERL_EXTERNAL_GLOB
1705 " PERL_EXTERNAL_GLOB"
1706# endif
59b86f4b
DM
1707# ifdef PERL_HASH_FUNC_SIPHASH
1708 " PERL_HASH_FUNC_SIPHASH"
1709# endif
1710# ifdef PERL_HASH_FUNC_SDBM
1711 " PERL_HASH_FUNC_SDBM"
1712# endif
1713# ifdef PERL_HASH_FUNC_DJB2
1714 " PERL_HASH_FUNC_DJB2"
1715# endif
1716# ifdef PERL_HASH_FUNC_SUPERFAST
1717 " PERL_HASH_FUNC_SUPERFAST"
1718# endif
1719# ifdef PERL_HASH_FUNC_MURMUR3
1720 " PERL_HASH_FUNC_MURMUR3"
1721# endif
1722# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1723 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1724# endif
1725# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1726 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1727# endif
1728# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1729 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1730# endif
4a5df386
NC
1731# ifdef PERL_IS_MINIPERL
1732 " PERL_IS_MINIPERL"
1733# endif
1734# ifdef PERL_MALLOC_WRAP
1735 " PERL_MALLOC_WRAP"
1736# endif
1737# ifdef PERL_MEM_LOG
1738 " PERL_MEM_LOG"
1739# endif
1740# ifdef PERL_MEM_LOG_NOIMPL
1741 " PERL_MEM_LOG_NOIMPL"
1742# endif
59b86f4b
DM
1743# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1744 " PERL_PERTURB_KEYS_DETERMINISTIC"
1745# endif
1746# ifdef PERL_PERTURB_KEYS_DISABLED
1747 " PERL_PERTURB_KEYS_DISABLED"
1748# endif
1749# ifdef PERL_PERTURB_KEYS_RANDOM
1750 " PERL_PERTURB_KEYS_RANDOM"
1751# endif
c3cf41ec
NC
1752# ifdef PERL_PRESERVE_IVUV
1753 " PERL_PRESERVE_IVUV"
1754# endif
c051e30b
NC
1755# ifdef PERL_RELOCATABLE_INCPUSH
1756 " PERL_RELOCATABLE_INCPUSH"
1757# endif
4a5df386
NC
1758# ifdef PERL_USE_DEVEL
1759 " PERL_USE_DEVEL"
1760# endif
1761# ifdef PERL_USE_SAFE_PUTENV
1762 " PERL_USE_SAFE_PUTENV"
1763# endif
a3749cf3
NC
1764# ifdef UNLINK_ALL_VERSIONS
1765 " UNLINK_ALL_VERSIONS"
1766# endif
de618ee4
NC
1767# ifdef USE_ATTRIBUTES_FOR_PERLIO
1768 " USE_ATTRIBUTES_FOR_PERLIO"
1769# endif
4a5df386
NC
1770# ifdef USE_FAST_STDIO
1771 " USE_FAST_STDIO"
1772# endif
59b86f4b
DM
1773# ifdef USE_HASH_SEED_EXPLICIT
1774 " USE_HASH_SEED_EXPLICIT"
1775# endif
98548bdf
NC
1776# ifdef USE_LOCALE
1777 " USE_LOCALE"
1778# endif
98548bdf
NC
1779# ifdef USE_LOCALE_CTYPE
1780 " USE_LOCALE_CTYPE"
1781# endif
5a8d8935
NC
1782# ifdef USE_PERL_ATOF
1783 " USE_PERL_ATOF"
1784# endif
0d311fbe
NC
1785# ifdef USE_SITECUSTOMIZE
1786 " USE_SITECUSTOMIZE"
1787# endif
4a5df386
NC
1788 ;
1789 PERL_UNUSED_ARG(cv);
d3db1514 1790 PERL_UNUSED_VAR(items);
4a5df386
NC
1791
1792 EXTEND(SP, entries);
1793
1794 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1795 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1796 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1797
1798#ifdef __DATE__
1799# ifdef __TIME__
1800 PUSHs(Perl_newSVpvn_flags(aTHX_
1801 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1802 SVs_TEMP));
1803# else
1804 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1805 SVs_TEMP));
1806# endif
1807#else
1808 PUSHs(&PL_sv_undef);
1809#endif
1810
4a5df386
NC
1811 for (i = 1; i <= local_patch_count; i++) {
1812 /* This will be an undef, if PL_localpatches[i] is NULL. */
1813 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1814 }
1815
1816 XSRETURN(entries);
1817}
1818
be71fc8f
NC
1819#define INCPUSH_UNSHIFT 0x01
1820#define INCPUSH_ADD_OLD_VERS 0x02
1821#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1822#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1823#define INCPUSH_NOT_BASEDIR 0x10
1824#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1825#define INCPUSH_ADD_SUB_DIRS \
1826 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1827
312caa8e 1828STATIC void *
14dd3ad8 1829S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1830{
27da23d5 1831 dVAR;
2f9285f8 1832 PerlIO *rsfp;
312caa8e 1833 int argc = PL_origargc;
8f42b153 1834 char **argv = PL_origargv;
e1ec3a88 1835 const char *scriptname = NULL;
402582ca 1836 bool dosearch = FALSE;
eb578fdb 1837 char c;
737c24fc 1838 bool doextract = FALSE;
bd61b366 1839 const char *cddir = NULL;
ab019eaa 1840#ifdef USE_SITECUSTOMIZE
20ef40cf 1841 bool minus_f = FALSE;
ab019eaa 1842#endif
95670bde 1843 SV *linestr_sv = NULL;
5486870f 1844 bool add_read_e_script = FALSE;
87606032 1845 U32 lex_start_flags = 0;
009d90df 1846
ca7b837b 1847 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1848
6224f72b 1849 init_main_stash();
54310121 1850
c7030b81
NC
1851 {
1852 const char *s;
6224f72b
GS
1853 for (argc--,argv++; argc > 0; argc--,argv++) {
1854 if (argv[0][0] != '-' || !argv[0][1])
1855 break;
6224f72b
GS
1856 s = argv[0]+1;
1857 reswitch:
47f56822 1858 switch ((c = *s)) {
729a02f2 1859 case 'C':
1d5472a9
GS
1860#ifndef PERL_STRICT_CR
1861 case '\r':
1862#endif
6224f72b
GS
1863 case ' ':
1864 case '0':
1865 case 'F':
1866 case 'a':
1867 case 'c':
1868 case 'd':
1869 case 'D':
1870 case 'h':
1871 case 'i':
1872 case 'l':
1873 case 'M':
1874 case 'm':
1875 case 'n':
1876 case 'p':
1877 case 's':
1878 case 'u':
1879 case 'U':
1880 case 'v':
599cee73
PM
1881 case 'W':
1882 case 'X':
6224f72b 1883 case 'w':
97bd5664 1884 if ((s = moreswitches(s)))
6224f72b
GS
1885 goto reswitch;
1886 break;
33b78306 1887
1dbad523 1888 case 't':
dc6d7f5c 1889#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1890 /* silently ignore */
dc6d7f5c 1891#elif defined(NO_TAINT_SUPPORT)
3231f579 1892 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1893 "Cowardly refusing to run with -t or -T flags");
1894#else
22f7c9c9 1895 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1896 if( !TAINTING_get ) {
1897 TAINT_WARN_set(TRUE);
1898 TAINTING_set(TRUE);
317ea90d 1899 }
284167a5 1900#endif
317ea90d
MS
1901 s++;
1902 goto reswitch;
6224f72b 1903 case 'T':
dc6d7f5c 1904#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1905 /* silently ignore */
dc6d7f5c 1906#elif defined(NO_TAINT_SUPPORT)
3231f579 1907 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1908 "Cowardly refusing to run with -t or -T flags");
1909#else
22f7c9c9 1910 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1911 TAINTING_set(TRUE);
1912 TAINT_WARN_set(FALSE);
1913#endif
6224f72b
GS
1914 s++;
1915 goto reswitch;
f86702cc 1916
bc9b29db
RH
1917 case 'E':
1918 PL_minus_E = TRUE;
924ba076 1919 /* FALLTHROUGH */
6224f72b 1920 case 'e':
f20b2998 1921 forbid_setid('e', FALSE);
3280af22 1922 if (!PL_e_script) {
396482e1 1923 PL_e_script = newSVpvs("");
5486870f 1924 add_read_e_script = TRUE;
6224f72b
GS
1925 }
1926 if (*++s)
3280af22 1927 sv_catpv(PL_e_script, s);
6224f72b 1928 else if (argv[1]) {
3280af22 1929 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1930 argc--,argv++;
1931 }
1932 else
47f56822 1933 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1934 sv_catpvs(PL_e_script, "\n");
6224f72b 1935 break;
afe37c7d 1936
20ef40cf 1937 case 'f':
f5542d3a 1938#ifdef USE_SITECUSTOMIZE
20ef40cf 1939 minus_f = TRUE;
f5542d3a 1940#endif
20ef40cf
GA
1941 s++;
1942 goto reswitch;
1943
6224f72b 1944 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1945 forbid_setid('I', FALSE);
bd61b366 1946 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1947 argc--,argv++;
1948 }
6224f72b 1949 if (s && *s) {
0df16ed7 1950 STRLEN len = strlen(s);
55b4bc1c 1951 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1952 }
1953 else
a67e862a 1954 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1955 break;
6224f72b 1956 case 'S':
f20b2998 1957 forbid_setid('S', FALSE);
6224f72b
GS
1958 dosearch = TRUE;
1959 s++;
1960 goto reswitch;
1961 case 'V':
7edfd0ef
NC
1962 {
1963 SV *opts_prog;
1964
7edfd0ef 1965 if (*++s != ':') {
37ca4a5b 1966 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1967 }
1968 else {
1969 ++s;
1970 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1971 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1972 0, s, 0);
1973 s += strlen(s);
1974 }
37ca4a5b 1975 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1976 /* don't look for script or read stdin */
1977 scriptname = BIT_BUCKET;
1978 goto reswitch;
6224f72b 1979 }
6224f72b 1980 case 'x':
737c24fc 1981 doextract = TRUE;
6224f72b 1982 s++;
304334da 1983 if (*s)
f4c556ac 1984 cddir = s;
6224f72b
GS
1985 break;
1986 case 0:
1987 break;
1988 case '-':
1989 if (!*++s || isSPACE(*s)) {
1990 argc--,argv++;
1991 goto switch_end;
1992 }
ee8bc8b7
NC
1993 /* catch use of gnu style long options.
1994 Both of these exit immediately. */
1995 if (strEQ(s, "version"))
1996 minus_v();
1997 if (strEQ(s, "help"))
1998 usage();
6224f72b 1999 s--;
924ba076 2000 /* FALLTHROUGH */
6224f72b 2001 default:
cea2e8a9 2002 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2003 }
2004 }
c7030b81
NC
2005 }
2006
6224f72b 2007 switch_end:
54310121 2008
c7030b81
NC
2009 {
2010 char *s;
2011
f675dbe5
CB
2012 if (
2013#ifndef SECURE_INTERNAL_GETENV
284167a5 2014 !TAINTING_get &&
f675dbe5 2015#endif
cf756827 2016 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2017 {
9e0b0d62
KW
2018 /* s points to static memory in getenv(), which may be overwritten at
2019 * any time; use a mortal copy instead */
2020 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2021
74288ac8
GS
2022 while (isSPACE(*s))
2023 s++;
317ea90d 2024 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2025#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2026 /* silently ignore */
dc6d7f5c 2027#elif defined(NO_TAINT_SUPPORT)
3231f579 2028 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2029 "Cowardly refusing to run with -t or -T flags");
2030#else
22f7c9c9 2031 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2032 TAINTING_set(TRUE);
2033 TAINT_WARN_set(FALSE);
2034#endif
317ea90d 2035 }
74288ac8 2036 else {
bd61b366 2037 char *popt_copy = NULL;
74288ac8 2038 while (s && *s) {
54913509 2039 const char *d;
74288ac8
GS
2040 while (isSPACE(*s))
2041 s++;
2042 if (*s == '-') {
2043 s++;
2044 if (isSPACE(*s))
2045 continue;
2046 }
4ea8f8fb 2047 d = s;
74288ac8
GS
2048 if (!*s)
2049 break;
2b622f1a 2050 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2051 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2052 while (++s && *s) {
2053 if (isSPACE(*s)) {
cf756827 2054 if (!popt_copy) {
bfa6c418
NC
2055 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2056 s = popt_copy + (s - d);
2057 d = popt_copy;
cf756827 2058 }
4ea8f8fb
MS
2059 *s++ = '\0';
2060 break;
2061 }
2062 }
1c4db469 2063 if (*d == 't') {
dc6d7f5c 2064#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2065 /* silently ignore */
dc6d7f5c 2066#elif defined(NO_TAINT_SUPPORT)
3231f579 2067 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2068 "Cowardly refusing to run with -t or -T flags");
2069#else
2070 if( !TAINTING_get) {
2071 TAINT_WARN_set(TRUE);
2072 TAINTING_set(TRUE);
317ea90d 2073 }
284167a5 2074#endif
1c4db469 2075 } else {
97bd5664 2076 moreswitches(d);
1c4db469 2077 }
6224f72b 2078 }
6224f72b
GS
2079 }
2080 }
c7030b81 2081 }
a0d0e21e 2082
c29067d7
CH
2083 /* Set $^X early so that it can be used for relocatable paths in @INC */
2084 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2085 assert (!TAINT_get);
c29067d7 2086 TAINT;
e2051532 2087 set_caret_X();
c29067d7
CH
2088 TAINT_NOT;
2089
43c0c913 2090#if defined(USE_SITECUSTOMIZE)
20ef40cf 2091 if (!minus_f) {
43c0c913 2092 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2093 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2094 ie a q() operator with a NUL byte as a the delimiter. This avoids
2095 problems with pathnames containing (say) ' */
43c0c913
NC
2096# ifdef PERL_IS_MINIPERL
2097 AV *const inc = GvAV(PL_incgv);
2098 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2099
2100 if (inc0) {
15870c5c
NC
2101 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2102 it should be reported immediately as a build failure. */
43c0c913
NC
2103 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2104 Perl_newSVpvf(aTHX_
5de87db5 2105 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2106 "do {local $!; -f $f }"
2107 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2108 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2109 }
2110# else
2111 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2112 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2113 if (raw_sitelib) {
2114 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2115 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2116 INCPUSH_CAN_RELOCATE);
2117 const char *const sitelib = SvPVX(sitelib_sv);
2118 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2119 Perl_newSVpvf(aTHX_
2120 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2121 0, SVfARG(sitelib), 0,
2122 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2123 assert (SvREFCNT(sitelib_sv) == 1);
2124 SvREFCNT_dec(sitelib_sv);
2125 }
43c0c913 2126# endif
20ef40cf
GA
2127 }
2128#endif
2129
6224f72b
GS
2130 if (!scriptname)
2131 scriptname = argv[0];
3280af22 2132 if (PL_e_script) {
6224f72b
GS
2133 argc++,argv--;
2134 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2135 }
bd61b366 2136 else if (scriptname == NULL) {
6224f72b
GS
2137#ifdef MSDOS
2138 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2139 moreswitches("h");
6224f72b
GS
2140#endif
2141 scriptname = "-";
2142 }
2143
284167a5 2144 assert (!TAINT_get);
2cace6ac 2145 init_perllib();
6224f72b 2146
a52eba0e 2147 {
f20b2998 2148 bool suidscript = FALSE;
829372d3 2149
8d113837 2150 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2151 if (!rsfp) {
2152 rsfp = PerlIO_stdin();
87606032 2153 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2154 }
6224f72b 2155
b24bc095 2156 validate_suid(rsfp);
6224f72b 2157
64ca3a65 2158#ifndef PERL_MICRO
a52eba0e
NC
2159# if defined(SIGCHLD) || defined(SIGCLD)
2160 {
2161# ifndef SIGCHLD
2162# define SIGCHLD SIGCLD
2163# endif
2164 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2165 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2166 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2167 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2168 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2169 }
0b5b802d 2170 }
a52eba0e 2171# endif
64ca3a65 2172#endif
0b5b802d 2173
737c24fc 2174 if (doextract) {
faef540c 2175
f20b2998 2176 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2177 setuid scripts. */
2178 forbid_setid('x', suidscript);
f20b2998 2179 /* Hence you can't get here if suidscript is true */
faef540c 2180
95670bde
NC
2181 linestr_sv = newSV_type(SVt_PV);
2182 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2183 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2184 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2185 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2186 }
f4c556ac 2187 }
6224f72b 2188
ea726b52 2189 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2190 CvUNIQUE_on(PL_compcv);
2191
eacbb379 2192 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2193
dd69841b
BB
2194 PL_isarev = newHV();
2195
0c4f7ff0 2196 boot_core_PerlIO();
6224f72b 2197 boot_core_UNIVERSAL();
e1a479c5 2198 boot_core_mro();
4a5df386 2199 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2200
2201 if (xsinit)
acfe0abc 2202 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2203#ifndef PERL_MICRO
739a0b84 2204#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2205 init_os_extras();
6224f72b 2206#endif
64ca3a65 2207#endif
6224f72b 2208
29209bc5 2209#ifdef USE_SOCKS
1b9c9cf5
DH
2210# ifdef HAS_SOCKS5_INIT
2211 socks5_init(argv[0]);
2212# else
29209bc5 2213 SOCKSinit(argv[0]);
1b9c9cf5 2214# endif
ac27b0f5 2215#endif
29209bc5 2216
6224f72b
GS
2217 init_predump_symbols();
2218 /* init_postdump_symbols not currently designed to be called */
2219 /* more than once (ENV isn't cleared first, for example) */
2220 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2221 if (!PL_do_undump)
6224f72b
GS
2222 init_postdump_symbols(argc,argv,env);
2223
27da23d5
JH
2224 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2225 * or explicitly in some platforms.
085a54d9 2226 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2227 * look like the user wants to use UTF-8. */
a0fd4948 2228#if defined(__SYMBIAN32__)
27da23d5
JH
2229 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2230#endif
e27b5b51 2231# ifndef PERL_IS_MINIPERL
06e66572
JH
2232 if (PL_unicode) {
2233 /* Requires init_predump_symbols(). */
a05d7ebb 2234 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2235 IO* io;
2236 PerlIO* fp;
2237 SV* sv;
2238
a05d7ebb 2239 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2240 * and the default open disciplines. */
a05d7ebb
JH
2241 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2242 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2243 (fp = IoIFP(io)))
2244 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2245 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2246 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2247 (fp = IoOFP(io)))
2248 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2249 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2250 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2251 (fp = IoOFP(io)))
2252 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2253 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2254 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2255 SVt_PV)))) {
a05d7ebb
JH
2256 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2257 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2258 if (in) {
2259 if (out)
76f68e9b 2260 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2261 else
76f68e9b 2262 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2263 }
2264 else if (out)
76f68e9b 2265 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2266 SvSETMAGIC(sv);
2267 }
b310b053
JH
2268 }
2269 }
e27b5b51 2270#endif
b310b053 2271
c7030b81
NC
2272 {
2273 const char *s;
4ffa73a3
JH
2274 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2275 if (strEQ(s, "unsafe"))
2276 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2277 else if (strEQ(s, "safe"))
2278 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2279 else
2280 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2281 }
c7030b81 2282 }
4ffa73a3 2283
81d86705 2284
87606032 2285 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2286 SvREFCNT_dec(linestr_sv);
95670bde 2287
219f7226 2288 PL_subname = newSVpvs("main");
6224f72b 2289
5486870f
DM
2290 if (add_read_e_script)
2291 filter_add(read_e_script, NULL);
2292
6224f72b
GS
2293 /* now parse the script */
2294
93189314 2295 SETERRNO(0,SS_NORMAL);
28ac2b49 2296 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2297 if (PL_minus_c)
cea2e8a9 2298 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2299 else {
cea2e8a9 2300 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2301 PL_origfilename);
6224f72b
GS
2302 }
2303 }
57843af0 2304 CopLINE_set(PL_curcop, 0);
03d9f026 2305 SET_CURSTASH(PL_defstash);
3280af22
NIS
2306 if (PL_e_script) {
2307 SvREFCNT_dec(PL_e_script);
a0714e2c 2308 PL_e_script = NULL;
6224f72b
GS
2309 }
2310
3280af22 2311 if (PL_do_undump)
6224f72b
GS
2312 my_unexec();
2313
57843af0
GS
2314 if (isWARN_ONCE) {
2315 SAVECOPFILE(PL_curcop);
2316 SAVECOPLINE(PL_curcop);
3280af22 2317 gv_check(PL_defstash);
57843af0 2318 }
6224f72b
GS
2319
2320 LEAVE;
2321 FREETMPS;
2322
2323#ifdef MYMALLOC
f6a607bc
RGS
2324 {
2325 const char *s;
22ff3130
HS
2326 UV uv;
2327 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2328 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2329 dump_mstats("after compilation:");
f6a607bc 2330 }
6224f72b
GS
2331#endif
2332
2333 ENTER;
febb3a6d 2334 PL_restartjmpenv = NULL;
3280af22 2335 PL_restartop = 0;
312caa8e 2336 return NULL;
6224f72b
GS
2337}
2338
954c1994
GS
2339/*
2340=for apidoc perl_run
2341
2342Tells a Perl interpreter to run. See L<perlembed>.
2343
2344=cut
2345*/
2346
6224f72b 2347int
0cb96387 2348perl_run(pTHXx)
6224f72b 2349{
6224f72b 2350 I32 oldscope;
14dd3ad8 2351 int ret = 0;
db36c5a1 2352 dJMPENV;
6224f72b 2353
7918f24d
NC
2354 PERL_ARGS_ASSERT_PERL_RUN;
2355#ifndef MULTIPLICITY
ed6c66dd 2356 PERL_UNUSED_ARG(my_perl);
7918f24d 2357#endif
9d4ba2ae 2358
3280af22 2359 oldscope = PL_scopestack_ix;
96e176bf
CL
2360#ifdef VMS
2361 VMSISH_HUSHED = 0;
2362#endif
6224f72b 2363
14dd3ad8 2364 JMPENV_PUSH(ret);
6224f72b
GS
2365 switch (ret) {
2366 case 1:
2367 cxstack_ix = -1; /* start context stack again */
312caa8e 2368 goto redo_body;
14dd3ad8 2369 case 0: /* normal completion */
14dd3ad8
GS
2370 redo_body:
2371 run_body(oldscope);
924ba076 2372 /* FALLTHROUGH */
14dd3ad8 2373 case 2: /* my_exit() */
3280af22 2374 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2375 LEAVE;
2376 FREETMPS;
03d9f026 2377 SET_CURSTASH(PL_defstash);
3a1ee7e8 2378 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2379 PL_endav && !PL_minus_c) {
ca7b837b 2380 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2381 call_list(oldscope, PL_endav);
9ebf26ad 2382 }
6224f72b
GS
2383#ifdef MYMALLOC
2384 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2385 dump_mstats("after execution: ");
2386#endif
37038d91 2387 ret = STATUS_EXIT;
14dd3ad8 2388 break;
6224f72b 2389 case 3:
312caa8e
CS
2390 if (PL_restartop) {
2391 POPSTACK_TO(PL_mainstack);
2392 goto redo_body;
6224f72b 2393 }
5637ef5b 2394 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2395 FREETMPS;
14dd3ad8
GS
2396 ret = 1;
2397 break;
6224f72b
GS
2398 }
2399
14dd3ad8
GS
2400 JMPENV_POP;
2401 return ret;
312caa8e
CS
2402}
2403
dd374669 2404STATIC void
14dd3ad8
GS
2405S_run_body(pTHX_ I32 oldscope)
2406{
d3b97530
DM
2407 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2408 PL_sawampersand ? "Enabling" : "Omitting",
2409 (unsigned int)(PL_sawampersand)));
6224f72b 2410
3280af22 2411 if (!PL_restartop) {
cf2782cd 2412#ifdef DEBUGGING
f0e3f042
CS
2413 if (DEBUG_x_TEST || DEBUG_B_TEST)
2414 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2415 if (!DEBUG_q_TEST)
2416 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2417#endif
6224f72b 2418
3280af22 2419 if (PL_minus_c) {
bf49b057 2420 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2421 my_exit(0);
2422 }
3280af22 2423 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2424 PL_DBsingle_iv = 1;
9ebf26ad 2425 if (PL_initav) {
ca7b837b 2426 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2427 call_list(oldscope, PL_initav);
9ebf26ad 2428 }
f1fac472 2429#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2430 if (PL_main_root && PL_main_root->op_slabbed)
2431 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2432#endif
6224f72b
GS
2433 }
2434
2435 /* do it */
2436
ca7b837b 2437 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2438
3280af22 2439 if (PL_restartop) {
febb3a6d 2440 PL_restartjmpenv = NULL;
533c011a 2441 PL_op = PL_restartop;
3280af22 2442 PL_restartop = 0;
cea2e8a9 2443 CALLRUNOPS(aTHX);
6224f72b 2444 }
3280af22
NIS
2445 else if (PL_main_start) {
2446 CvDEPTH(PL_main_cv) = 1;
533c011a 2447 PL_op = PL_main_start;
cea2e8a9 2448 CALLRUNOPS(aTHX);
6224f72b 2449 }
f6b3007c 2450 my_exit(0);
e5964223 2451 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2452}
2453
954c1994 2454/*
ccfc67b7
JH
2455=head1 SV Manipulation Functions
2456
954c1994
GS
2457=for apidoc p||get_sv
2458
64ace3f8 2459Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2460C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2461Perl variable does not exist then it will be created. If C<flags> is zero
2462and the variable does not exist then NULL is returned.
954c1994
GS
2463
2464=cut
2465*/
2466
6224f72b 2467SV*
64ace3f8 2468Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2469{
2470 GV *gv;
7918f24d
NC
2471
2472 PERL_ARGS_ASSERT_GET_SV;
2473
64ace3f8 2474 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2475 if (gv)
2476 return GvSV(gv);
a0714e2c 2477 return NULL;
6224f72b
GS
2478}
2479
954c1994 2480/*
ccfc67b7
JH
2481=head1 Array Manipulation Functions
2482
954c1994
GS
2483=for apidoc p||get_av
2484
f0b90de1
SF
2485Returns the AV of the specified Perl global or package array with the given
2486name (so it won't work on lexical variables). C<flags> are passed
72d33970 2487to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2488Perl variable does not exist then it will be created. If C<flags> is zero
2489and the variable does not exist then NULL is returned.
954c1994 2490
f0b90de1
SF
2491Perl equivalent: C<@{"$name"}>.
2492
954c1994
GS
2493=cut
2494*/
2495
6224f72b 2496AV*
cbfd0a87 2497Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2498{
cbfd0a87 2499 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2500
2501 PERL_ARGS_ASSERT_GET_AV;
2502
cbfd0a87 2503 if (flags)
6224f72b
GS
2504 return GvAVn(gv);
2505 if (gv)
2506 return GvAV(gv);
7d49f689 2507 return NULL;
6224f72b
GS
2508}
2509
954c1994 2510/*
ccfc67b7
JH
2511=head1 Hash Manipulation Functions
2512
954c1994
GS
2513=for apidoc p||get_hv
2514
6673a63c 2515Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2516C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2517Perl variable does not exist then it will be created. If C<flags> is zero
2518and the variable does not exist then NULL is returned.
954c1994
GS
2519
2520=cut
2521*/
2522
6224f72b 2523HV*
6673a63c 2524Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2525{
6673a63c 2526 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2527
2528 PERL_ARGS_ASSERT_GET_HV;
2529
6673a63c 2530 if (flags)
a0d0e21e
LW
2531 return GvHVn(gv);
2532 if (gv)
2533 return GvHV(gv);
5c284bb0 2534 return NULL;
a0d0e21e
LW
2535}
2536
954c1994 2537/*
ccfc67b7
JH
2538=head1 CV Manipulation Functions
2539
780a5241
NC
2540=for apidoc p||get_cvn_flags
2541
2542Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2543C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2544exist then it will be declared (which has the same effect as saying
2545C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2546then NULL is returned.
2547
954c1994
GS
2548=for apidoc p||get_cv
2549
780a5241 2550Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2551
2552=cut
2553*/
2554
a0d0e21e 2555CV*
780a5241 2556Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2557{
780a5241 2558 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2559
2560 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2561
334dda80
FC
2562 /* XXX this is probably not what they think they're getting.
2563 * It has the same effect as "sub name;", i.e. just a forward
2564 * declaration! */
780a5241 2565 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2566 return newSTUB(gv,0);
780a5241 2567 }
a0d0e21e 2568 if (gv)
8ebc5c01 2569 return GvCVu(gv);
601f1833 2570 return NULL;
a0d0e21e
LW
2571}
2572
2c67934f
NC
2573/* Nothing in core calls this now, but we can't replace it with a macro and
2574 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2575CV*
2576Perl_get_cv(pTHX_ const char *name, I32 flags)
2577{
7918f24d
NC
2578 PERL_ARGS_ASSERT_GET_CV;
2579
780a5241
NC
2580 return get_cvn_flags(name, strlen(name), flags);
2581}
2582
79072805
LW
2583/* Be sure to refetch the stack pointer after calling these routines. */
2584
954c1994 2585/*
ccfc67b7
JH
2586
2587=head1 Callback Functions
2588
954c1994
GS
2589=for apidoc p||call_argv
2590
f0b90de1 2591Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2592with C<argv> (a NULL-terminated array of strings) as arguments. See
2593L<perlcall>.
f0b90de1
SF
2594
2595Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2596
2597=cut
2598*/
2599
a0d0e21e 2600I32
5aaab254 2601Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2602
8ac85365
NIS
2603 /* See G_* flags in cop.h */
2604 /* null terminated arg list */
8990e307 2605{
a0d0e21e 2606 dSP;
8990e307 2607
7918f24d
NC
2608 PERL_ARGS_ASSERT_CALL_ARGV;
2609
924508f0 2610 PUSHMARK(SP);
3dc78631
DM
2611 while (*argv) {
2612 mXPUSHs(newSVpv(*argv,0));
2613 argv++;
8990e307 2614 }
3dc78631 2615 PUTBACK;
864dbfa3 2616 return call_pv(sub_name, flags);
8990e307
LW
2617}
2618
954c1994
GS
2619/*
2620=for apidoc p||call_pv
2621
2622Performs a callback to the specified Perl sub. See L<perlcall>.
2623
2624=cut
2625*/
2626
a0d0e21e 2627I32
864dbfa3 2628Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2629 /* name of the subroutine */
2630 /* See G_* flags in cop.h */
a0d0e21e 2631{
7918f24d
NC
2632 PERL_ARGS_ASSERT_CALL_PV;
2633
0da0e728 2634 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2635}
2636
954c1994
GS
2637/*
2638=for apidoc p||call_method
2639
2640Performs a callback to the specified Perl method. The blessed object must
2641be on the stack. See L<perlcall>.
2642
2643=cut
2644*/
2645
a0d0e21e 2646I32
864dbfa3 2647Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2648 /* name of the subroutine */
2649 /* See G_* flags in cop.h */
a0d0e21e 2650{
46ca9bac 2651 STRLEN len;
c106c2be 2652 SV* sv;
7918f24d
NC
2653 PERL_ARGS_ASSERT_CALL_METHOD;
2654
46ca9bac 2655 len = strlen(methname);
c106c2be
RZ
2656 sv = flags & G_METHOD_NAMED
2657 ? sv_2mortal(newSVpvn_share(methname, len,0))
2658 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2659
c106c2be 2660 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2661}
2662
2663/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2664/*
2665=for apidoc p||call_sv
2666
078e2213
TC
2667Performs a callback to the Perl sub specified by the SV.
2668
7c0c544c 2669If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2670SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2671or C<SvPV(sv)> will be used as the name of the sub to call.
2672
2673If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2674C<SvPV(sv)> will be used as the name of the method to call.
2675
2676If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2677the name of the method to call.
2678
2679Some other values are treated specially for internal use and should
2680not be depended on.
2681
2682See L<perlcall>.
954c1994
GS
2683
2684=cut
2685*/
2686
a0d0e21e 2687I32
001d637e 2688Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2689 /* See G_* flags in cop.h */
a0d0e21e 2690{
27da23d5 2691 dVAR; dSP;
a0d0e21e 2692 LOGOP myop; /* fake syntax tree node */
b46e009d 2693 METHOP method_op;
aa689395 2694 I32 oldmark;
8ea43dc8 2695 VOL I32 retval = 0;
a0d0e21e 2696 I32 oldscope;
54310121 2697 bool oldcatch = CATCH_GET;
6224f72b 2698 int ret;
c4420975 2699 OP* const oldop = PL_op;
db36c5a1 2700 dJMPENV;
1e422769 2701
7918f24d
NC
2702 PERL_ARGS_ASSERT_CALL_SV;
2703
a0d0e21e
LW
2704 if (flags & G_DISCARD) {
2705 ENTER;
2706 SAVETMPS;
2707 }
2f8edad0
NC
2708 if (!(flags & G_WANT)) {
2709 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2710 */
2711 flags |= G_SCALAR;
2712 }
a0d0e21e 2713
aa689395 2714 Zero(&myop, 1, LOGOP);
f51d4af5 2715 if (!(flags & G_NOARGS))
aa689395 2716 myop.op_flags |= OPf_STACKED;
4f911530 2717 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2718 SAVEOP();
533c011a 2719 PL_op = (OP*)&myop;
aa689395 2720
3280af22 2721 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2722 if (!(flags & G_METHOD_NAMED))
2723 *++PL_stack_sp = sv;
aa689395 2724 oldmark = TOPMARK;
3280af22 2725 oldscope = PL_scopestack_ix;
a0d0e21e 2726
3280af22 2727 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2728 /* Handle first BEGIN of -d. */
3280af22 2729 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2730 /* Try harder, since this may have been a sighandler, thus
2731 * curstash may be meaningless. */
ea726b52 2732 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2733 && !(flags & G_NODEBUG))
5ff48db8 2734 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2735
c106c2be 2736 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2737 Zero(&method_op, 1, METHOP);
2738 method_op.op_next = (OP*)&myop;
2739 PL_op = (OP*)&method_op;
c106c2be 2740 if ( flags & G_METHOD_NAMED ) {
b46e009d 2741 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2742 method_op.op_type = OP_METHOD_NAMED;
2743 method_op.op_u.op_meth_sv = sv;
c106c2be 2744 } else {
b46e009d 2745 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2746 method_op.op_type = OP_METHOD;
c106c2be
RZ
2747 }
2748 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2749 myop.op_type = OP_ENTERSUB;
968b3946
GS
2750 }
2751
312caa8e 2752 if (!(flags & G_EVAL)) {
0cdb2077 2753 CATCH_SET(TRUE);
d6f07c05 2754 CALL_BODY_SUB((OP*)&myop);
312caa8e 2755 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2756 CATCH_SET(oldcatch);
312caa8e
CS
2757 }
2758 else {
d78bda3d 2759 myop.op_other = (OP*)&myop;
3280af22 2760 PL_markstack_ptr--;
edb2152a 2761 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2762 PL_markstack_ptr++;
a0d0e21e 2763
14dd3ad8 2764 JMPENV_PUSH(ret);
edb2152a 2765
6224f72b
GS
2766 switch (ret) {
2767 case 0:
14dd3ad8 2768 redo_body:
d6f07c05 2769 CALL_BODY_SUB((OP*)&myop);
312caa8e 2770 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2771 if (!(flags & G_KEEPERR)) {
ab69dbc2 2772 CLEAR_ERRSV();
8433848b 2773 }
a0d0e21e 2774 break;
6224f72b 2775 case 1:
f86702cc 2776 STATUS_ALL_FAILURE;
924ba076 2777 /* FALLTHROUGH */
6224f72b 2778 case 2:
a0d0e21e 2779 /* my_exit() was called */
03d9f026 2780 SET_CURSTASH(PL_defstash);
a0d0e21e 2781 FREETMPS;
14dd3ad8 2782 JMPENV_POP;
f86702cc 2783 my_exit_jump();
e5964223 2784 NOT_REACHED; /* NOTREACHED */
6224f72b 2785 case 3:
3280af22 2786 if (PL_restartop) {
febb3a6d 2787 PL_restartjmpenv = NULL;
533c011a 2788 PL_op = PL_restartop;
3280af22 2789 PL_restartop = 0;
312caa8e 2790 goto redo_body;
a0d0e21e 2791 }
3280af22 2792 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2793 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2794 retval = 0;
2795 else {
2796 retval = 1;
3280af22 2797 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2798 }
312caa8e 2799 break;
a0d0e21e 2800 }
a0d0e21e 2801
edb2152a
NC
2802 if (PL_scopestack_ix > oldscope)
2803 delete_eval_scope();
14dd3ad8 2804 JMPENV_POP;
a0d0e21e 2805 }
1e422769 2806
a0d0e21e 2807 if (flags & G_DISCARD) {
3280af22 2808 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2809 retval = 0;
2810 FREETMPS;
2811 LEAVE;
2812 }
533c011a 2813 PL_op = oldop;
a0d0e21e
LW
2814 return retval;
2815}
2816
6e72f9df 2817/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2818
954c1994
GS
2819/*
2820=for apidoc p||eval_sv
2821
72d33970
FC
2822Tells Perl to C<eval> the string in the SV. It supports the same flags
2823as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2824
2825=cut
2826*/
2827
a0d0e21e 2828I32
864dbfa3 2829Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2830
8ac85365 2831 /* See G_* flags in cop.h */
a0d0e21e 2832{
97aff369 2833 dVAR;
924508f0 2834 dSP;
a0d0e21e 2835 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2836 VOL I32 oldmark = SP - PL_stack_base;
2837 VOL I32 retval = 0;
6224f72b 2838 int ret;
c4420975 2839 OP* const oldop = PL_op;
db36c5a1 2840 dJMPENV;
84902520 2841
7918f24d
NC
2842 PERL_ARGS_ASSERT_EVAL_SV;
2843
4633a7c4
LW
2844 if (flags & G_DISCARD) {
2845 ENTER;
2846 SAVETMPS;
2847 }
2848
462e5cf6 2849 SAVEOP();
533c011a 2850 PL_op = (OP*)&myop;
5ff48db8 2851 Zero(&myop, 1, UNOP);
3280af22
NIS
2852 EXTEND(PL_stack_sp, 1);
2853 *++PL_stack_sp = sv;
79072805 2854
4633a7c4
LW
2855 if (!(flags & G_NOARGS))
2856 myop.op_flags = OPf_STACKED;
6e72f9df 2857 myop.op_type = OP_ENTEREVAL;
4f911530 2858 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2859 if (flags & G_KEEPERR)
2860 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2861
2862 if (flags & G_RE_REPARSING)
2863 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2864
dedbcade
DM
2865 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2866 * before a PUSHEVAL, which corrupts the stack after a croak */
2867 TAINT_PROPER("eval_sv()");
2868
14dd3ad8 2869 JMPENV_PUSH(ret);
6224f72b
GS
2870 switch (ret) {
2871 case 0:
14dd3ad8 2872 redo_body:
2ba65d5f
DM
2873 if (PL_op == (OP*)(&myop)) {
2874 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2875 if (!PL_op)
2876 goto fail; /* failed in compilation */
2877 }
4aca2f62 2878 CALLRUNOPS(aTHX);
312caa8e 2879 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2880 if (!(flags & G_KEEPERR)) {
ab69dbc2 2881 CLEAR_ERRSV();
8433848b 2882 }
4633a7c4 2883 break;
6224f72b 2884 case 1:
f86702cc 2885 STATUS_ALL_FAILURE;
924ba076 2886 /* FALLTHROUGH */
6224f72b 2887 case 2:
4633a7c4 2888 /* my_exit() was called */
03d9f026 2889 SET_CURSTASH(PL_defstash);
4633a7c4 2890 FREETMPS;
14dd3ad8 2891 JMPENV_POP;
f86702cc 2892 my_exit_jump();
e5964223 2893 NOT_REACHED; /* NOTREACHED */
6224f72b 2894 case 3:
3280af22 2895 if (PL_restartop) {
febb3a6d 2896 PL_restartjmpenv = NULL;
533c011a 2897 PL_op = PL_restartop;
3280af22 2898 PL_restartop = 0;
312caa8e 2899 goto redo_body;
4633a7c4 2900 }
4aca2f62 2901 fail:
3280af22 2902 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2903 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2904 retval = 0;
2905 else {
2906 retval = 1;
3280af22 2907 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2908 }
312caa8e 2909 break;
4633a7c4
LW
2910 }
2911
14dd3ad8 2912 JMPENV_POP;
4633a7c4 2913 if (flags & G_DISCARD) {
3280af22 2914 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2915 retval = 0;
2916 FREETMPS;
2917 LEAVE;
2918 }
533c011a 2919 PL_op = oldop;
4633a7c4
LW
2920 return retval;
2921}
2922
954c1994
GS
2923/*
2924=for apidoc p||eval_pv
2925
422791e4 2926Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2927
2928=cut
2929*/
2930
137443ea 2931SV*
864dbfa3 2932Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2933{
137443ea
PP
2934 SV* sv = newSVpv(p, 0);
2935
7918f24d
NC
2936 PERL_ARGS_ASSERT_EVAL_PV;
2937
864dbfa3 2938 eval_sv(sv, G_SCALAR);
137443ea
PP
2939 SvREFCNT_dec(sv);
2940
ed1786ad
DD
2941 {
2942 dSP;
2943 sv = POPs;
2944 PUTBACK;
2945 }
137443ea 2946
eed484f9
DD
2947 /* just check empty string or undef? */
2948 if (croak_on_error) {
2949 SV * const errsv = ERRSV;
2950 if(SvTRUE_NN(errsv))
2951 /* replace with croak_sv? */
2952 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2953 }
137443ea
PP
2954
2955 return sv;
2956}
2957
4633a7c4
LW
2958/* Require a module. */
2959
954c1994 2960/*
ccfc67b7
JH
2961=head1 Embedding Functions
2962
954c1994
GS
2963=for apidoc p||require_pv
2964
7d3fb230
BS
2965Tells Perl to C<require> the file named by the string argument. It is
2966analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2967implemented that way; consider using load_module instead.
954c1994 2968
7d3fb230 2969=cut */
954c1994 2970
4633a7c4 2971void
864dbfa3 2972Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2973{
d3acc0f7 2974 dSP;
97aff369 2975 SV* sv;
7918f24d
NC
2976
2977 PERL_ARGS_ASSERT_REQUIRE_PV;
2978
e788e7d3 2979 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2980 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2981 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2982 POPSTACK;
79072805
LW
2983}
2984
76e3520e 2985STATIC void
b6f82619 2986S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2987{
ab821d7f 2988 /* This message really ought to be max 23 lines.
75c72d73 2989 * Removed -h because the user already knows that option. Others? */
fb73857a 2990
1566c39d
NC
2991 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2992 minimum of 509 character string literals. */
27da23d5 2993 static const char * const usage_msg[] = {
1566c39d
NC
2994" -0[octal] specify record separator (\\0, if no argument)\n"
2995" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2996" -C[number/list] enables the listed Unicode features\n"
2997" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2998" -d[:debugger] run program under debugger\n"
2999" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3000" -e program one line of program (several -e's allowed, omit programfile)\n"
3001" -E program like -e, but enables all optional features\n"
3002" -f don't do $sitelib/sitecustomize.pl at startup\n"
3003" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3004" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3005" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3006" -l[octal] enable line ending processing, specifies line terminator\n"
3007" -[mM][-]module execute \"use/no module...\" before executing program\n"
3008" -n assume \"while (<>) { ... }\" loop around program\n"
3009" -p assume loop like -n but print line also, like sed\n"
3010" -s enable rudimentary parsing for switches after programfile\n"
3011" -S look for programfile using PATH environment variable\n",
3012" -t enable tainting warnings\n"
3013" -T enable tainting checks\n"
3014" -u dump core after parsing program\n"
3015" -U allow unsafe operations\n"
3016" -v print version, patchlevel and license\n"
3017" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3018" -w enable many useful warnings\n"
1566c39d
NC
3019" -W enable all warnings\n"
3020" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3021" -X disable all warnings\n"
3022" \n"
3023"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3024NULL
3025};
27da23d5 3026 const char * const *p = usage_msg;
1566c39d 3027 PerlIO *out = PerlIO_stdout();
fb73857a 3028
1566c39d
NC
3029 PerlIO_printf(out,
3030 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3031 PL_origargv[0]);
fb73857a 3032 while (*p)
1566c39d 3033 PerlIO_puts(out, *p++);
b6f82619 3034 my_exit(0);
4633a7c4
LW
3035}
3036
b4ab917c
DM
3037/* convert a string of -D options (or digits) into an int.
3038 * sets *s to point to the char after the options */
3039
3040#ifdef DEBUGGING
3041int
e1ec3a88 3042Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3043{
27da23d5 3044 static const char * const usage_msgd[] = {
651b8f1a
NC
3045 " Debugging flag values: (see also -d)\n"
3046 " p Tokenizing and parsing (with v, displays parse stack)\n"
3047 " s Stack snapshots (with v, displays all stacks)\n"
3048 " l Context (loop) stack processing\n"
3049 " t Trace execution\n"
3050 " o Method and overloading resolution\n",
3051 " c String/numeric conversions\n"
3052 " P Print profiling info, source file input state\n"
3053 " m Memory and SV allocation\n"
3054 " f Format processing\n"
3055 " r Regular expression parsing and execution\n"
3056 " x Syntax tree dump\n",
3057 " u Tainting checks\n"
3058 " H Hash dump -- usurps values()\n"
3059 " X Scratchpad allocation\n"
3060 " D Cleaning up\n"
56967202 3061 " S Op slab allocation\n"
651b8f1a
NC
3062 " T Tokenising\n"
3063 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3064 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3065 " v Verbose: use in conjunction with other flags\n"
3066 " C Copy On Write\n"
3067 " A Consistency checks on internal structures\n"
3068 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3069 " M trace smart match resolution\n"
3070 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3071 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3072 NULL
3073 };
22ff3130 3074 UV uv = 0;
7918f24d
NC
3075
3076 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3077
b4ab917c
DM
3078 if (isALPHA(**s)) {
3079 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3080 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3081
0eb30aeb 3082 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3083 const char * const d = strchr(debopts,**s);
b4ab917c 3084 if (d)
22ff3130 3085 uv |= 1 << (d - debopts);
b4ab917c 3086 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3087 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3088 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3089 }
3090 }
e6e64d9b 3091 else if (isDIGIT(**s)) {
96e440d2 3092 const char* e;
22ff3130 3093 if (grok_atoUV(*s, &uv, &e))
96e440d2 3094 *s = e;
0eb30aeb 3095 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3096 }
ddcf8bc1 3097 else if (givehelp) {
06e869a4 3098 const char *const *p = usage_msgd;
651b8f1a 3099 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3100 }
22ff3130 3101 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3102}
3103#endif
3104
79072805
LW
3105/* This routine handles any switches that can be given during run */
3106
c7030b81
NC
3107const char *
3108Perl_moreswitches(pTHX_ const char *s)
79072805 3109{
27da23d5 3110 dVAR;
84c133a0 3111 UV rschar;
0544e6df 3112 const char option = *s; /* used to remember option in -m/-M code */
79072805 3113
7918f24d
NC
3114 PERL_ARGS_ASSERT_MORESWITCHES;
3115
79072805
LW
3116 switch (*s) {
3117 case '0':
a863c7d1 3118 {
f2095865 3119 I32 flags = 0;
a3b680e6 3120 STRLEN numlen;
f2095865
JH
3121
3122 SvREFCNT_dec(PL_rs);
3123 if (s[1] == 'x' && s[2]) {
a3b680e6 3124 const char *e = s+=2;
f2095865
JH
3125 U8 *tmps;
3126
a3b680e6
AL
3127 while (*e)
3128 e++;
f2095865
JH
3129 numlen = e - s;
3130 flags = PERL_SCAN_SILENT_ILLDIGIT;
3131 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3132 if (s + numlen < e) {
3133 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3134 numlen = 0;
3135 s--;
3136 }
396482e1 3137 PL_rs = newSVpvs("");
c5661c80 3138 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3139 tmps = (U8*)SvPVX(PL_rs);
3140 uvchr_to_utf8(tmps, rschar);
3141 SvCUR_set(PL_rs, UNISKIP(rschar));
3142 SvUTF8_on(PL_rs);
3143 }
3144 else {
3145 numlen = 4;
3146 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3147 if (rschar & ~((U8)~0))
3148 PL_rs = &PL_sv_undef;
3149 else if (!rschar && numlen >= 2)
396482e1 3150 PL_rs = newSVpvs("");
f2095865
JH
3151 else {
3152 char ch = (char)rschar;
3153 PL_rs = newSVpvn(&ch, 1);
3154 }
3155 }
64ace3f8 3156 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3157 return s + numlen;
a863c7d1 3158 }
46487f74 3159 case 'C':
a05d7ebb 3160 s++;
dd374669 3161 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3162 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3163 PL_utf8cache = -1;
46487f74 3164 return s;
2304df62 3165 case 'F':
5fc691f1 3166 PL_minus_a = TRUE;
3280af22 3167 PL_minus_F = TRUE;
24ffa309 3168 PL_minus_n = TRUE;
ebce5377
RGS
3169 PL_splitstr = ++s;
3170 while (*s && !isSPACE(*s)) ++s;
e49e380e 3171 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3172 return s;
79072805 3173 case 'a':
3280af22 3174 PL_minus_a = TRUE;
24ffa309 3175 PL_minus_n = TRUE;
79072805
LW
3176 s++;
3177 return s;
3178 case 'c':
3280af22 3179 PL_minus_c = TRUE;
79072805
LW
3180 s++;
3181 return s;
3182 case 'd':
f20b2998 3183 forbid_setid('d', FALSE);
4633a7c4 3184 s++;
2cbb2ee1
RGS
3185
3186 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3187 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3188 ++s;
3189 my_setenv("PERL5DB_THREADED", "1");
3190 }
3191
70c94a19
RR
3192 /* The following permits -d:Mod to accepts arguments following an =
3193 in the fashion that -MSome::Mod does. */
3194 if (*s == ':' || *s == '=') {
b19934fb
NC
3195 const char *start;
3196 const char *end;
3197 SV *sv;
3198
3199 if (*++s == '-') {
3200 ++s;
3201 sv = newSVpvs("no Devel::");
3202 } else {
3203 sv = newSVpvs("use Devel::");
3204 }
3205
3206 start = s;
3207 end = s + strlen(s);
f85893a1 3208
b19934fb 3209 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3210 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3211 if (*s != '=')
f85893a1 3212 sv_catpvn(sv, start, end - start);
70c94a19
RR
3213 else {
3214 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3215 /* Don't use NUL as q// delimiter here, this string goes in the
3216 * environment. */
3217 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3218 }
f85893a1 3219 s = end;
184f32ec 3220 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3221 SvREFCNT_dec(sv);
4633a7c4 3222 }
ed094faf 3223 if (!PL_perldb) {
3280af22 3224 PL_perldb = PERLDB_ALL;
a0d0e21e 3225 init_debugger();
ed094faf 3226 }
79072805
LW
3227 return s;
3228 case 'D':
0453d815 3229 {
79072805 3230#ifdef DEBUGGING
f20b2998 3231 forbid_setid('D', FALSE);
b4ab917c 3232 s++;
dd374669 3233 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3234#else /* !DEBUGGING */
0453d815 3235 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3236 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3237 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3238 for (s++; isWORDCHAR(*s); s++) ;
79072805 3239#endif
79072805 3240 return s;
2b5060ae 3241 NOT_REACHED; /* NOTREACHED */
0453d815 3242 }
4633a7c4 3243 case 'h':
b6f82619 3244 usage();
2b5060ae
DM
3245 NOT_REACHED; /* NOTREACHED */
3246
79072805 3247 case 'i':
43c5f42d 3248 Safefree(PL_inplace);
c030f24b
GH
3249#if defined(__CYGWIN__) /* do backup extension automagically */
3250 if (*(s+1) == '\0') {
c86a4f2e 3251 PL_inplace = savepvs(".bak");
c030f24b
GH
3252 return s+1;
3253 }
3254#endif /* __CYGWIN__ */
5ef5d758 3255 {
d4c19fe8 3256 const char * const start = ++s;
5ef5d758
NC
3257 while (*s && !isSPACE(*s))
3258 ++s;
3259
3260 PL_inplace = savepvn(start, s - start);
3261 }
7b8d334a 3262 if (*s) {
5ef5d758 3263 ++s;
7b8d334a 3264 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3265 s++;
7b8d334a 3266 }
fb73857a 3267 return s;
4e49a025 3268 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3269 forbid_setid('I', FALSE);
fb73857a
PP
3270 ++s;
3271 while (*s && isSPACE(*s))
3272 ++s;
3273 if (*s) {
c7030b81 3274 const char *e, *p;
0df16ed7
GS
3275 p = s;
3276 /* ignore trailing spaces (possibly followed by other switches) */
3277 do {
3278 for (e = p; *e && !isSPACE(*e); e++) ;
3279 p = e;
3280 while (isSPACE(*p))
3281 p++;
3282 } while (*p && *p != '-');
55b4bc1c 3283 incpush(s, e-s,
e28f3139 3284 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3285 s = p;
3286 if (*s == '-')
3287 s++;
79072805
LW
3288 }
3289 else
a67e862a 3290 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3291 return s;
79072805 3292 case 'l':
3280af22 3293 PL_minus_l = TRUE;
79072805 3294 s++;
7889fe52
NIS
3295 if (PL_ors_sv) {
3296 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3297 PL_ors_sv = NULL;
7889fe52 3298 }
79072805 3299 if (isDIGIT(*s)) {
53305cf1 3300 I32 flags = 0;
a3b680e6 3301 STRLEN numlen;
396482e1 3302 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3303 numlen = 3 + (*s == '0');
3304 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3305 s += numlen;
3306 }
3307 else {
8bfdd7d9 3308 if (RsPARA(PL_rs)) {
396482e1 3309 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3310 }
3311 else {
8bfdd7d9 3312 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3313 }
79072805
LW
3314 }
3315 return s;
1a30305b 3316 case 'M':
f20b2998 3317 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3318 /* FALLTHROUGH */
1a30305b 3319 case 'm':
f20b2998 3320 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3321 if (*++s) {
c7030b81 3322 const char *start;
b64cb68c 3323 const char *end;
11343788 3324 SV *sv;
e1ec3a88 3325 const char *use = "use ";
0544e6df 3326 bool colon = FALSE;
a5f75d66 3327 /* -M-foo == 'no foo' */
d0043bd1
NC
3328 /* Leading space on " no " is deliberate, to make both
3329 possibilities the same length. */
3330 if (*s == '-') { use = " no "; ++s; }
3331 sv = newSVpvn(use,4);
a5f75d66 3332 start = s;
1a30305b 3333 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3334 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3335 if( *s++ == ':' ) {
3336 if( *s == ':' )
3337 s++;
3338 else
3339 colon = TRUE;
3340 }
3341 }
3342 if (s == start)
3343 Perl_croak(aTHX_ "Module name required with -%c option",
3344 option);
3345 if (colon)
3346 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3347 "contains single ':'",
63da6837 3348 (int)(s - start), start, option);
b64cb68c 3349 end = s + strlen(s);
c07a80fd 3350 if (*s != '=') {
b64cb68c 3351 sv_catpvn(sv, start, end - start);
0544e6df 3352 if (option == 'm') {
c07a80fd 3353 if (*s != '\0')
cea2e8a9 3354 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3355 sv_catpvs( sv, " ()");
c07a80fd
PP
3356 }
3357 } else {
11343788 3358 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3359 /* Use NUL as q''-delimiter. */
3360 sv_catpvs(sv, " split(/,/,q\0");
3361 ++s;
3362 sv_catpvn(sv, s, end - s);
396482e1 3363 sv_catpvs(sv, "\0)");
c07a80fd 3364 }
b64cb68c 3365 s = end;
29a861e7 3366 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3367 }
3368 else
0544e6df 3369 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3370 return s;
79072805 3371 case 'n':
3280af22 3372 PL_minus_n = TRUE;
79072805
LW
3373 s++;
3374 return s;
3375 case 'p':
3280af22 3376 PL_minus_p = TRUE;
79072805
LW
3377 s++;
3378 return s;
3379 case 's':
f20b2998 3380 forbid_setid('s', FALSE);
3280af22 3381 PL_doswitches = TRUE;
79072805
LW
3382 s++;
3383 return s;
6537fe72 3384 case 't':
27a6968b 3385 case 'T':
dc6d7f5c 3386#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3387 /* silently ignore */
dc6d7f5c 3388#elif defined(NO_TAINT_SUPPORT)
3231f579 3389 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3390 "Cowardly refusing to run with -t or -T flags");
3391#else
3392 if (!TAINTING_get)
27a6968b 3393 TOO_LATE_FOR(*s);
284167a5 3394#endif
6537fe72 3395 s++;
463ee0b2 3396 return s;
79072805 3397 case 'u':
3280af22 3398 PL_do_undump = TRUE;
79072805
LW
3399 s++;
3400 return s;
3401 case 'U':
3280af22 3402 PL_unsafe = TRUE;
79072805
LW
3403 s++;
3404 return s;
3405 case 'v':
c4bc78d9
NC
3406 minus_v();
3407 case 'w':
3408 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3409 PL_dowarn |= G_WARN_ON;
3410 }
3411 s++;
3412 return s;
3413 case 'W':
3414 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3415 if (!specialWARN(PL_compiling.cop_warnings))
3416 PerlMemShared_free(PL_compiling.cop_warnings);
3417 PL_compiling.cop_warnings = pWARN_ALL ;
3418 s++;
3419 return s;
3420 case 'X':
3421 PL_dowarn = G_WARN_ALL_OFF;
3422 if (!specialWARN(PL_compiling.cop_warnings))
3423 PerlMemShared_free(PL_compiling.cop_warnings);
3424 PL_compiling.cop_warnings = pWARN_NONE ;
3425 s++;
3426 return s;
3427 case '*':
3428 case ' ':
3429 while( *s == ' ' )
3430 ++s;
3431 if (s[0] == '-') /* Additional switches on #! line. */
3432 return s+1;
3433 break;
3434 case '-':
3435 case 0:
3436#if defined(WIN32) || !defined(PERL_STRICT_CR)
3437 case '\r':
3438#endif
3439 case '\n':
3440 case '\t':
3441 break;
3442#ifdef ALTERNATE_SHEBANG
3443 case 'S': /* OS/2 needs -S on "extproc" line. */
3444 break;
3445#endif
4bb78d63
CB
3446 case 'e': case 'f': case 'x': case 'E':
3447#ifndef ALTERNATE_SHEBANG
3448 case 'S':
3449#endif
3450 case 'V':
c4bc78d9 3451 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3452 default:
3453 Perl_croak(aTHX_
3454 "Unrecognized switch: -%.1s (-h will show valid options)",s
3455 );
c4bc78d9
NC
3456 }
3457 return NULL;
3458}
3459
3460
3461STATIC void
3462S_minus_v(pTHX)
3463{
fc3381af 3464 PerlIO * PIO_stdout;
46807d8e 3465 {
709aee94
DD
3466 const char * const level_str = "v" PERL_VERSION_STRING;
3467 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3468#ifdef PERL_PATCHNUM
709aee94 3469 SV* level;
23d483e2 3470# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3471 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3472# else
709aee94 3473 static const char num [] = PERL_PATCHNUM;
23d483e2 3474# endif
fc3381af 3475 {
709aee94
DD
3476 const STRLEN num_len = sizeof(num)-1;
3477 /* A very advanced compiler would fold away the strnEQ
3478 and this whole conditional, but most (all?) won't do it.
3479 SV level could also be replaced by with preprocessor
3480 catenation.
3481 */
3482 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3483 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3484 of the interp so it might contain format characters
3485 */
3486 level = newSVpvn(num, num_len);
fc3381af 3487