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4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2aa47728 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
42# ifdef I_SYSUIO
43# include <sys/uio.h>
44# endif
45
46union control_un {
47 struct cmsghdr cm;
48 char control[CMSG_SPACE(sizeof(int))];
49};
50
2aa47728
NC
51#endif
52
5311654c
JH
53#ifndef HZ
54# ifdef CLK_TCK
55# define HZ CLK_TCK
56# else
57# define HZ 60
58# endif
59#endif
60
7114a2d2 61#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 62char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL
73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC
87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC
90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
71ad1b0c 95 HINTS_REFCNT_INIT;
e6827a76 96 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
97 MUTEX_INIT(&PL_my_ctx_mutex);
98# endif
e6827a76 99 }
c0bce9aa
NC
100#if defined(USE_ITHREADS)
101 else
102#else
103 /* This always happens for non-ithreads */
104#endif
105 {
e6827a76
NC
106 PERL_SET_THX(my_perl);
107 }
108}
06d86050 109
cbec8ebe
DM
110
111/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
112
113void
114Perl_sys_init(int* argc, char*** argv)
115{
4fc0badb 116 dVAR;
7918f24d
NC
117
118 PERL_ARGS_ASSERT_SYS_INIT;
119
cbec8ebe
DM
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
123}
124
125void
126Perl_sys_init3(int* argc, char*** argv, char*** env)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT3;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
136}
137
138void
88772978 139Perl_sys_term(void)
cbec8ebe 140{
4fc0badb 141 dVAR;
bf81751b
DM
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
144 }
cbec8ebe
DM
145}
146
147
32e30700
GS
148#ifdef PERL_IMPLICIT_SYS
149PerlInterpreter *
7766f137
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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
GS
175 return my_perl;
176}
177#else
954c1994
GS
178
179/*
ccfc67b7
JH
180=head1 Embedding Functions
181
954c1994
GS
182=for apidoc perl_alloc
183
184Allocates a new Perl interpreter. See L<perlembed>.
185
186=cut
187*/
188
93a17b20 189PerlInterpreter *
cea2e8a9 190perl_alloc(void)
79072805 191{
cea2e8a9 192 PerlInterpreter *my_perl;
79072805 193
9f653bb5 194 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 196
e6827a76 197 S_init_tls_and_interp(my_perl);
7cb608b5 198#ifndef PERL_TRACK_MEMPOOL
07409e01 199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
200#else
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
203 return my_perl;
204#endif
79072805 205}
32e30700 206#endif /* PERL_IMPLICIT_SYS */
79072805 207
954c1994
GS
208/*
209=for apidoc perl_construct
210
211Initializes a new Perl interpreter. See L<perlembed>.
212
213=cut
214*/
215
79072805 216void
0cb96387 217perl_construct(pTHXx)
79072805 218{
27da23d5 219 dVAR;
7918f24d
NC
220
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
222
8990e307 223#ifdef MULTIPLICITY
54aff467 224 init_interp();
ac27b0f5 225 PL_perl_destruct_level = 1;
54aff467 226#else
7918f24d 227 PERL_UNUSED_ARG(my_perl);
54aff467
GS
228 if (PL_perl_destruct_level > 0)
229 init_interp();
230#endif
34caed6d
DM
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
75d476e2
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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);
64935bc6 392 PL_GCB_invlist = _new_invlist_C_array(Grapheme_Cluster_Break_invlist);
06ae2722 393 PL_SB_invlist = _new_invlist_C_array(Sentence_Break_invlist);
ae3bb8ea 394 PL_WB_invlist = _new_invlist_C_array(Word_Break_invlist);
7b8dd5f4 395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC
441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC
449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
462 abort();
463 }
bf357333
NC
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
466 abort();
467 }
468
808ad2d0
NC
469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC
480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
491
808ad2d0
NC
492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC
511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS
516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG
539 assert(PL_scopestack_ix == 1);
540
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH
549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
553 i = grok_atou(s, NULL);
554 }
36e77d41
DD
555#ifdef DEBUGGING
556 if (destruct_level < i) destruct_level = i;
557#endif
558#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
36e77d41 561#endif
5f05dabc 562 }
4633a7c4
LW
563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
9ebf26ad 572 if (PL_endav && !PL_minus_c) {
ca7b837b 573 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 574 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 575 }
f3faeb53 576 JMPENV_POP;
26f423df 577 }
f3faeb53 578 LEAVE;
a0d0e21e 579 FREETMPS;
3d22c4f0 580 assert(PL_scopestack_ix == 0);
a0d0e21e 581
e00b64d4 582 /* Need to flush since END blocks can produce output */
f13a2bc0 583 my_fflush_all();
e00b64d4 584
75d476e2
SM
585#ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
591 }
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
596#endif
597
598
16c91539 599 if (PL_threadhook(aTHX)) {
62375a60 600 /* Threads hook has vetoed further cleanup */
c301d606 601 PL_veto_cleanup = TRUE;
37038d91 602 return STATUS_EXIT;
62375a60
NIS
603 }
604
2aa47728
NC
605#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
611 fail gracefully */
612 int fd[2];
613
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
616 abort();
617 }
618
619 child = fork();
620 if(child == -1) {
621 perror("Debug leaking scalars fork failed");
622 abort();
623 }
624 if (!child) {
625 /* We are the child */
3125a5a4
NC
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
628 int f;
808ad2d0
NC
629 const char *where;
630 /* Our success message is an integer 0, and a char 0 */
b61433a9 631 static const char success[sizeof(int) + 1] = {0};
3125a5a4 632
2aa47728 633 close(fd[0]);
2aa47728 634
3125a5a4
NC
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
bf357333
NC
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
646
647 f = sysconf(_SC_OPEN_MAX);
648 if(f < 0) {
808ad2d0
NC
649 where = "sysconf failed";
650 goto abort;
3125a5a4
NC
651 }
652 while (f--) {
653 if (f == sock)
654 continue;
3125a5a4
NC
655 close(f);
656 }
657
2aa47728
NC
658 while (1) {
659 SV *target;
bf357333
NC
660 union control_un control;
661 struct msghdr msg;
662 struct iovec vec[1];
663 struct cmsghdr *cmptr;
664 ssize_t got;
665 int got_fd;
666
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
670 msg.msg_name = NULL;
671 msg.msg_namelen = 0;
672 msg.msg_iov = vec;
c3caa5c3 673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
674
675 vec[0].iov_base = (void*)&target;
676 vec[0].iov_len = sizeof(target);
677
678 got = recvmsg(sock, &msg, 0);
2aa47728
NC
679
680 if(got == 0)
681 break;
682 if(got < 0) {
808ad2d0
NC
683 where = "recv failed";
684 goto abort;
2aa47728
NC
685 }
686 if(got < sizeof(target)) {
808ad2d0
NC
687 where = "short recv";
688 goto abort;
2aa47728 689 }
bf357333 690
808ad2d0
NC
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
692 where = "no cmsg";
693 goto abort;
694 }
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
697 goto abort;
698 }
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
701 goto abort;
702 }
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
705 goto abort;
706 }
bf357333
NC
707
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
711 */
808ad2d0
NC
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
714 where = "dup2";
715 goto abort;
716 }
717 }
2aa47728 718 sv_dump(target);
bf357333 719
2aa47728
NC
720 PerlIO_flush(Perl_debug_log);
721
808ad2d0 722 got = write(sock, &success, sizeof(success));
2aa47728
NC
723
724 if(got < 0) {
808ad2d0
NC
725 where = "write failed";
726 goto abort;
2aa47728 727 }
808ad2d0
NC
728 if(got < sizeof(success)) {
729 where = "short write";
730 goto abort;
2aa47728
NC
731 }
732 }
733 _exit(0);
808ad2d0
NC
734 abort:
735 {
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
740 {&length, 1},
741 {(void*)where, length}
742 };
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
748 reading the data. */
749 sleep(2);
750 _exit((got == -1) ? errno : 0);
751 }
bf357333 752 /* End of child. */
2aa47728 753 }
41e4abd8 754 PL_dumper_fd = fd[0];
2aa47728
NC
755 close(fd[1]);
756 }
757#endif
758
ff0cee69
PP
759 /* We must account for everything. */
760
761 /* Destroy the main CV and syntax tree */
37e77c23
FC
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
17fbfdf6 766 PL_curcop = &PL_compiling;
3280af22 767 if (PL_main_root) {
4e380990
DM
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 772 }
3280af22 773 op_free(PL_main_root);
5f66b61c 774 PL_main_root = NULL;
a0d0e21e 775 }
5f66b61c 776 PL_main_start = NULL;
aac9d523
DM
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
3280af22 781 SvREFCNT_dec(PL_main_cv);
601f1833 782 PL_main_cv = NULL;
ca7b837b 783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 784
13621cfb
NIS
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
787 be cleaned up now.
788 */
789
790 PerlIO_destruct(aTHX);
791
ddf23d4a
SM
792 /*
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
796 */
797 sv_clean_objs();
8990e307 798
5cd24f17 799 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 800 SvREFCNT_dec(PL_warnhook);
a0714e2c 801 PL_warnhook = NULL;
3280af22 802 SvREFCNT_dec(PL_diehook);
a0714e2c 803 PL_diehook = NULL;
5cd24f17 804
4b556e6c 805 /* call exit list functions */
3280af22 806 while (PL_exitlistlen-- > 0)
acfe0abc 807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 808
3280af22 809 Safefree(PL_exitlist);
4b556e6c 810
1c4916e5
CB
811 PL_exitlist = NULL;
812 PL_exitlistlen = 0;
813
a3e6e81e
NC
814 SvREFCNT_dec(PL_registered_mros);
815
551a8b83 816 /* jettison our possibly duplicated environment */
4b647fb0
DM
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
819 */
2f42fcb0 820#ifndef PERL_MICRO
4b647fb0 821#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 822 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
823#ifdef USE_ITHREADS
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
826#endif
827 )
828 {
551a8b83
JH
829 I32 i;
830
831 for (i = 0; environ[i]; i++)
4b420006 832 safesysfree(environ[i]);
0631ea03 833
4b420006
JH
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
551a8b83
JH
836
837 environ = PL_origenviron;
838 }
839#endif
2f42fcb0 840#endif /* !PERL_MICRO */
551a8b83 841
30985c42
JH
842 if (destruct_level == 0) {
843
844 DEBUG_P(debprofdump());
845
846#if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
849#endif
850
851 CopFILE_free(&PL_compiling);
30985c42
JH
852
853 /* The exit() function will do everything that needs doing. */
854 return STATUS_EXIT;
855 }
856
9fa9f06b
KW
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
858
5f8cb046
DM
859#ifdef USE_ITHREADS
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
864 */
0547a729
DM
865 {
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
868
869 for (; i; i--) {
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
872 }
873 }
5f8cb046
DM
874#endif
875
0547a729 876
ad64d0ec 877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
878 PL_stashcache = NULL;
879
5f05dabc
PP
880 /* loosen bonds of global variables */
881
2f9285f8
DM
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
8ebc5c01
PP
886 }
887
84386e14
RGS
888 if (PL_minus_F) {
889 Safefree(PL_splitstr);
890 PL_splitstr = NULL;
891 }
892
8ebc5c01 893 /* switches */
3280af22
NIS
894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
1a904fc8 901#ifdef PERL_SAWAMPERSAND
d3b97530 902 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 903#endif
3280af22
NIS
904 PL_unsafe = FALSE;
905
906 Safefree(PL_inplace);
bd61b366 907 PL_inplace = NULL;
a7cb1f99 908 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
909
910 if (PL_e_script) {
911 SvREFCNT_dec(PL_e_script);
a0714e2c 912 PL_e_script = NULL;
8ebc5c01
PP
913 }
914
bf9cdc68
RG
915 PL_perldb = 0;
916
8ebc5c01
PP
917 /* magical thingies */
918
e23d9e2f
CS
919 SvREFCNT_dec(PL_ofsgv); /* *, */
920 PL_ofsgv = NULL;
5f05dabc 921
7889fe52 922 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 923 PL_ors_sv = NULL;
8ebc5c01 924
3280af22 925 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 926 PL_rs = NULL;
dc92893f 927
d33b2eba 928 Safefree(PL_osname); /* $^O */
bd61b366 929 PL_osname = NULL;
5f05dabc 930
3280af22 931 SvREFCNT_dec(PL_statname);
a0714e2c
SS
932 PL_statname = NULL;
933 PL_statgv = NULL;
5f05dabc 934
8ebc5c01
PP
935 /* defgv, aka *_ should be taken care of elsewhere */
936
7d5ea4e7
GS
937 /* float buffer */
938 Safefree(PL_efloatbuf);
bd61b366 939 PL_efloatbuf = NULL;
7d5ea4e7
GS
940 PL_efloatsize = 0;
941
8ebc5c01 942 /* startup and shutdown function lists */
3280af22 943 SvREFCNT_dec(PL_beginav);
5a837c8f 944 SvREFCNT_dec(PL_beginav_save);
3280af22 945 SvREFCNT_dec(PL_endav);
7d30b5c4 946 SvREFCNT_dec(PL_checkav);
ece599bd 947 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
948 SvREFCNT_dec(PL_unitcheckav);
949 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 950 SvREFCNT_dec(PL_initav);
7d49f689
NC
951 PL_beginav = NULL;
952 PL_beginav_save = NULL;
953 PL_endav = NULL;
954 PL_checkav = NULL;
955 PL_checkav_save = NULL;
3c10abe3
AG
956 PL_unitcheckav = NULL;
957 PL_unitcheckav_save = NULL;
7d49f689 958 PL_initav = NULL;
5618dfe8 959
8ebc5c01 960 /* shortcuts just get cleared */
a0714e2c
SS
961 PL_hintgv = NULL;
962 PL_errgv = NULL;
a0714e2c
SS
963 PL_argvoutgv = NULL;
964 PL_stdingv = NULL;
965 PL_stderrgv = NULL;
966 PL_last_in_gv = NULL;
a0714e2c
SS
967 PL_DBsingle = NULL;
968 PL_DBtrace = NULL;
969 PL_DBsignal = NULL;
a6d69523
TC
970 PL_DBsingle_iv = 0;
971 PL_DBtrace_iv = 0;
972 PL_DBsignal_iv = 0;
601f1833 973 PL_DBcv = NULL;
7d49f689 974 PL_dbargs = NULL;
5c284bb0 975 PL_debstash = NULL;
8ebc5c01 976
cf93a474 977 SvREFCNT_dec(PL_envgv);
f03015cd 978 SvREFCNT_dec(PL_incgv);
722fa0e9 979 SvREFCNT_dec(PL_argvgv);
475b1e90 980 SvREFCNT_dec(PL_replgv);
8cece913
FC
981 SvREFCNT_dec(PL_DBgv);
982 SvREFCNT_dec(PL_DBline);
983 SvREFCNT_dec(PL_DBsub);
cf93a474 984 PL_envgv = NULL;
f03015cd 985 PL_incgv = NULL;
722fa0e9 986 PL_argvgv = NULL;
475b1e90 987 PL_replgv = NULL;
8cece913
FC
988 PL_DBgv = NULL;
989 PL_DBline = NULL;
990 PL_DBsub = NULL;
991
7a1c5554 992 SvREFCNT_dec(PL_argvout_stack);
7d49f689 993 PL_argvout_stack = NULL;
8ebc5c01 994
5c831c24 995 SvREFCNT_dec(PL_modglobal);
5c284bb0 996 PL_modglobal = NULL;
5c831c24 997 SvREFCNT_dec(PL_preambleav);
7d49f689 998 PL_preambleav = NULL;
5c831c24 999 SvREFCNT_dec(PL_subname);
a0714e2c 1000 PL_subname = NULL;
ca0c25f6 1001#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1002 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1003 PL_pidstatus = NULL;
ca0c25f6 1004#endif
5c831c24 1005 SvREFCNT_dec(PL_toptarget);
a0714e2c 1006 PL_toptarget = NULL;
5c831c24 1007 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1008 PL_bodytarget = NULL;
1009 PL_formtarget = NULL;
5c831c24 1010
d33b2eba 1011 /* free locale stuff */
b9582b6a 1012#ifdef USE_LOCALE_COLLATE
d33b2eba 1013 Safefree(PL_collation_name);
bd61b366 1014 PL_collation_name = NULL;
b9582b6a 1015#endif
d33b2eba 1016
b9582b6a 1017#ifdef USE_LOCALE_NUMERIC
d33b2eba 1018 Safefree(PL_numeric_name);
bd61b366 1019 PL_numeric_name = NULL;
a453c169 1020 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1021 PL_numeric_radix_sv = NULL;
b9582b6a 1022#endif
d33b2eba 1023
9c0b6888
KW
1024 /* clear character classes */
1025 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1026 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1027 PL_utf8_swash_ptrs[i] = NULL;
1028 }
5c831c24
GS
1029 SvREFCNT_dec(PL_utf8_mark);
1030 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1031 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1032 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1033 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1034 SvREFCNT_dec(PL_utf8_idstart);
1035 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1036 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1037 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1038 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1039 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1040 SvREFCNT_dec(PL_UpperLatin1);
1041 SvREFCNT_dec(PL_Latin1);
1042 SvREFCNT_dec(PL_NonL1NonFinalFold);
1043 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1044#ifdef USE_LOCALE_CTYPE
780fcc9f 1045 SvREFCNT_dec(PL_warn_locale);
5b7de470 1046#endif
a0714e2c
SS
1047 PL_utf8_mark = NULL;
1048 PL_utf8_toupper = NULL;
1049 PL_utf8_totitle = NULL;
1050 PL_utf8_tolower = NULL;
1051 PL_utf8_tofold = NULL;
1052 PL_utf8_idstart = NULL;
1053 PL_utf8_idcont = NULL;
2726813d 1054 PL_utf8_foldclosures = NULL;
9fa9f06b 1055 PL_AboveLatin1 = NULL;
e0a1ff7a 1056 PL_InBitmap = NULL;
9fa9f06b 1057 PL_HasMultiCharFold = NULL;
5b7de470 1058#ifdef USE_LOCALE_CTYPE
780fcc9f 1059 PL_warn_locale = NULL;
5b7de470 1060#endif
9fa9f06b
KW
1061 PL_Latin1 = NULL;
1062 PL_NonL1NonFinalFold = NULL;
1063 PL_UpperLatin1 = NULL;
86f72d56 1064 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1065 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1066 PL_XPosix_ptrs[i] = NULL;
86f72d56 1067 }
64935bc6 1068 PL_GCB_invlist = NULL;
06ae2722 1069 PL_SB_invlist = NULL;
ae3bb8ea 1070 PL_WB_invlist = NULL;
5c831c24 1071
971a9dd3 1072 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1073 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1074 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1075 cophh_free(CopHINTHASH_get(&PL_compiling));
1076 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1077 CopFILE_free(&PL_compiling);
5c831c24 1078
a0d0e21e 1079 /* Prepare to destruct main symbol table. */
5f05dabc 1080
3280af22 1081 hv = PL_defstash;
ca556bcd
DM
1082 /* break ref loop *:: <=> %:: */
1083 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1084 PL_defstash = 0;
a0d0e21e 1085 SvREFCNT_dec(hv);
5c831c24 1086 SvREFCNT_dec(PL_curstname);
a0714e2c 1087 PL_curstname = NULL;
a0d0e21e 1088
5a844595
GS
1089 /* clear queued errors */
1090 SvREFCNT_dec(PL_errors);
a0714e2c 1091 PL_errors = NULL;
5a844595 1092
dd69841b
BB
1093 SvREFCNT_dec(PL_isarev);
1094
a0d0e21e 1095 FREETMPS;
9b387841 1096 if (destruct_level >= 2) {
3280af22 1097 if (PL_scopestack_ix != 0)
9b387841
NC
1098 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1099 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1100 (long)PL_scopestack_ix);
3280af22 1101 if (PL_savestack_ix != 0)
9b387841
NC
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced saves: %ld more saves than restores\n",
1104 (long)PL_savestack_ix);
3280af22 1105 if (PL_tmps_floor != -1)
9b387841
NC
1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1107 (long)PL_tmps_floor + 1);
a0d0e21e 1108 if (cxstack_ix != -1)
9b387841
NC
1109 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1110 (long)cxstack_ix + 1);
a0d0e21e 1111 }
8990e307 1112
0547a729
DM
1113#ifdef USE_ITHREADS
1114 SvREFCNT_dec(PL_regex_padav);
1115 PL_regex_padav = NULL;
1116 PL_regex_pad = NULL;
1117#endif
1118
776df701 1119#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1120 /* the entries in this list are allocated via SV PVX's, so get freed
1121 * in sv_clean_all */
1122 Safefree(PL_my_cxt_list);
776df701 1123#endif
57bb2458 1124
8990e307 1125 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1126
1127 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1128 while (sv_clean_all() > 2)
5226ed68
JH
1129 ;
1130
23083432
FC
1131#ifdef USE_ITHREADS
1132 Safefree(PL_stashpad); /* must come after sv_clean_all */
1133#endif
1134
d4777f27
GS
1135 AvREAL_off(PL_fdpid); /* no surviving entries */
1136 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1137 PL_fdpid = NULL;
d33b2eba 1138
6c644e78
GS
1139#ifdef HAVE_INTERP_INTERN
1140 sys_intern_clear();
1141#endif
1142
a38ab475
RZ
1143 /* constant strings */
1144 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1145 SvREFCNT_dec(PL_sv_consts[i]);
1146 PL_sv_consts[i] = NULL;
1147 }
1148
6e72f9df
PP
1149 /* Destruct the global string table. */
1150 {
1151 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1152 * so that sv_free() won't fail on them.
80459961
NC
1153 * Now that the global string table is using a single hunk of memory
1154 * for both HE and HEK, we either need to explicitly unshare it the
1155 * correct way, or actually free things here.
6e72f9df 1156 */
80459961
NC
1157 I32 riter = 0;
1158 const I32 max = HvMAX(PL_strtab);
c4420975 1159 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1160 HE *hent = array[0];
1161
6e72f9df 1162 for (;;) {
0453d815 1163 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1164 HE * const next = HeNEXT(hent);
9014280d 1165 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1166 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1167 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1168 Safefree(hent);
1169 hent = next;
6e72f9df
PP
1170 }
1171 if (!hent) {
1172 if (++riter > max)
1173 break;
1174 hent = array[riter];
1175 }
1176 }
80459961
NC
1177
1178 Safefree(array);
1179 HvARRAY(PL_strtab) = 0;
1180 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1181 }
3280af22 1182 SvREFCNT_dec(PL_strtab);
6e72f9df 1183
e652bb2f 1184#ifdef USE_ITHREADS
c21d1a0f 1185 /* free the pointer tables used for cloning */
a0739874 1186 ptr_table_free(PL_ptr_table);
bf9cdc68 1187 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1188#endif
a0739874 1189
d33b2eba
GS
1190 /* free special SVs */
1191
1192 SvREFCNT(&PL_sv_yes) = 0;
1193 sv_clear(&PL_sv_yes);
1194 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1195 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1196
1197 SvREFCNT(&PL_sv_no) = 0;
1198 sv_clear(&PL_sv_no);
1199 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1200 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1201
9f375a43
DM
1202 {
1203 int i;
1204 for (i=0; i<=2; i++) {
1205 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1206 sv_clear(PERL_DEBUG_PAD(i));
1207 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1208 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1209 }
1210 }
1211
0453d815 1212 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1213 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1214
eba0f806
DM
1215#ifdef DEBUG_LEAKING_SCALARS
1216 if (PL_sv_count != 0) {
1217 SV* sva;
1218 SV* sv;
eb578fdb 1219 SV* svend;
eba0f806 1220
ad64d0ec 1221 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1222 svend = &sva[SvREFCNT(sva)];
1223 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1224 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1225 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1226 " flags=0x%"UVxf
fd0854ff 1227 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1228 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1229 "serial %"UVuf"\n",
574b8821
NC
1230 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1231 pTHX__VALUE,
fd0854ff
DM
1232 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1233 sv->sv_debug_line,
1234 sv->sv_debug_inpad ? "for" : "by",
1235 sv->sv_debug_optype ?
1236 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1237 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1238 sv->sv_debug_serial
fd0854ff 1239 );
2aa47728 1240#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1241 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1242#endif
eba0f806
DM
1243 }
1244 }
1245 }
1246 }
2aa47728
NC
1247#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1248 {
1249 int status;
1250 fd_set rset;
1251 /* Wait for up to 4 seconds for child to terminate.
1252 This seems to be the least effort way of timing out on reaping
1253 its exit status. */
1254 struct timeval waitfor = {4, 0};
41e4abd8 1255 int sock = PL_dumper_fd;
2aa47728
NC
1256
1257 shutdown(sock, 1);
1258 FD_ZERO(&rset);
1259 FD_SET(sock, &rset);
1260 select(sock + 1, &rset, NULL, NULL, &waitfor);
1261 waitpid(child, &status, WNOHANG);
1262 close(sock);
1263 }
1264#endif
eba0f806 1265#endif
77abb4c6
NC
1266#ifdef DEBUG_LEAKING_SCALARS_ABORT
1267 if (PL_sv_count)
1268 abort();
1269#endif
bf9cdc68 1270 PL_sv_count = 0;
eba0f806 1271
56a2bab7 1272#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1273 /* No more IO - including error messages ! */
1274 PerlIO_cleanup(aTHX);
1275#endif
1276
9f4bd222 1277 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1278 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1279 for no arg - and will try and SvREFCNT_dec it.
1280 */
1281 SvREFCNT(&PL_sv_undef) = 0;
1282 SvREADONLY_off(&PL_sv_undef);
1283
3280af22 1284 Safefree(PL_origfilename);
bd61b366 1285 PL_origfilename = NULL;
43c5f42d 1286 Safefree(PL_reg_curpm);
dd28f7bb 1287 free_tied_hv_pool();
3280af22 1288 Safefree(PL_op_mask);
cf36064f 1289 Safefree(PL_psig_name);
bf9cdc68 1290 PL_psig_name = (SV**)NULL;
d525a7b2 1291 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1292 {
1293 /* We need to NULL PL_psig_pend first, so that
1294 signal handlers know not to use it */
1295 int *psig_save = PL_psig_pend;
1296 PL_psig_pend = (int*)NULL;
1297 Safefree(psig_save);
1298 }
6e72f9df 1299 nuke_stacks();
284167a5
SM
1300 TAINTING_set(FALSE);
1301 TAINT_WARN_set(FALSE);
3280af22 1302 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1303
a0d0e21e 1304 DEBUG_P(debprofdump());
d33b2eba 1305
b173165c
FC
1306 PL_debug = 0;
1307
e5dd39fc 1308#ifdef USE_REENTRANT_API
10bc17b6 1309 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1310#endif
1311
612f20c3
GS
1312 sv_free_arenas();
1313
5d9a96ca
DM
1314 while (PL_regmatch_slab) {
1315 regmatch_slab *s = PL_regmatch_slab;
1316 PL_regmatch_slab = PL_regmatch_slab->next;
1317 Safefree(s);
1318 }
1319
fc36a67e
PP
1320 /* As the absolutely last thing, free the non-arena SV for mess() */
1321
3280af22 1322 if (PL_mess_sv) {
f350b448
NC
1323 /* we know that type == SVt_PVMG */
1324
9c63abab 1325 /* it could have accumulated taint magic */
f350b448
NC
1326 MAGIC* mg;
1327 MAGIC* moremagic;
1328 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1329 moremagic = mg->mg_moremagic;
1330 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1331 && mg->mg_len >= 0)
1332 Safefree(mg->mg_ptr);
1333 Safefree(mg);
9c63abab 1334 }
f350b448 1335
fc36a67e 1336 /* we know that type >= SVt_PV */
8bd4d4c5 1337 SvPV_free(PL_mess_sv);
3280af22
NIS
1338 Safefree(SvANY(PL_mess_sv));
1339 Safefree(PL_mess_sv);
a0714e2c 1340 PL_mess_sv = NULL;
fc36a67e 1341 }
37038d91 1342 return STATUS_EXIT;
79072805
LW
1343}
1344
954c1994
GS
1345/*
1346=for apidoc perl_free
1347
1348Releases a Perl interpreter. See L<perlembed>.
1349
1350=cut
1351*/
1352
79072805 1353void
0cb96387 1354perl_free(pTHXx)
79072805 1355{
5174512c
NC
1356 dVAR;
1357
7918f24d
NC
1358 PERL_ARGS_ASSERT_PERL_FREE;
1359
c301d606
DM
1360 if (PL_veto_cleanup)
1361 return;
1362
7cb608b5 1363#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1364 {
1365 /*
1366 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1367 * value as we're probably hunting memory leaks then
1368 */
36e77d41 1369 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1370 const U32 old_debug = PL_debug;
55ef9aae
MHM
1371 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1372 thread at thread exit. */
4fd0a9b8
NC
1373 if (DEBUG_m_TEST) {
1374 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1375 "free this thread's memory\n");
1376 PL_debug &= ~ DEBUG_m_FLAG;
1377 }
6edcbed6
DD
1378 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1379 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1380 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1381 safesysfree(ptr);
1382 }
4fd0a9b8 1383 PL_debug = old_debug;
55ef9aae
MHM
1384 }
1385 }
7cb608b5
NC
1386#endif
1387
acfe0abc 1388#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1389# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1390 {
acfe0abc 1391# ifdef NETWARE
7af12a34 1392 void *host = nw_internal_host;
7af12a34 1393 PerlMem_free(aTHXx);
7af12a34 1394 nw_delete_internal_host(host);
acfe0abc 1395# else
bdb50480
NC
1396 void *host = w32_internal_host;
1397 PerlMem_free(aTHXx);
7af12a34 1398 win32_delete_internal_host(host);
acfe0abc 1399# endif
7af12a34 1400 }
1c0ca838
GS
1401# else
1402 PerlMem_free(aTHXx);
1403# endif
acfe0abc
GS
1404#else
1405 PerlMem_free(aTHXx);
76e3520e 1406#endif
79072805
LW
1407}
1408
b7f7fff6 1409#if defined(USE_ITHREADS)
aebd1ac7
GA
1410/* provide destructors to clean up the thread key when libperl is unloaded */
1411#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1412
826955bd 1413#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1414#pragma fini "perl_fini"
666ad1ec
GA
1415#elif defined(__sun) && !defined(__GNUC__)
1416#pragma fini (perl_fini)
aebd1ac7
GA
1417#endif
1418
0dbb1585
AL
1419static void
1420#if defined(__GNUC__)
1421__attribute__((destructor))
aebd1ac7 1422#endif
de009b76 1423perl_fini(void)
aebd1ac7 1424{
27da23d5 1425 dVAR;
5c64bffd
NC
1426 if (
1427#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1428 my_vars &&
1429#endif
1430 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1431 FREE_THREAD_KEY;
1432}
1433
1434#endif /* WIN32 */
1435#endif /* THREADS */
1436
4b556e6c 1437void
864dbfa3 1438Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1439{
3280af22
NIS
1440 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1441 PL_exitlist[PL_exitlistlen].fn = fn;
1442 PL_exitlist[PL_exitlistlen].ptr = ptr;
1443 ++PL_exitlistlen;
4b556e6c
JD
1444}
1445
954c1994
GS
1446/*
1447=for apidoc perl_parse
1448
1449Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1450
1451=cut
1452*/
1453
03d9f026
FC
1454#define SET_CURSTASH(newstash) \
1455 if (PL_curstash != newstash) { \
1456 SvREFCNT_dec(PL_curstash); \
1457 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1458 }
1459
79072805 1460int
0cb96387 1461perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1462{
27da23d5 1463 dVAR;
6224f72b 1464 I32 oldscope;
6224f72b 1465 int ret;
db36c5a1 1466 dJMPENV;
8d063cd8 1467
7918f24d
NC
1468 PERL_ARGS_ASSERT_PERL_PARSE;
1469#ifndef MULTIPLICITY
ed6c66dd 1470 PERL_UNUSED_ARG(my_perl);
7918f24d 1471#endif
7dc86639 1472#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1473 {
7dc86639
YO
1474 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1475
96e440d2 1476 if (s && (grok_atou(s, NULL) == 1)) {
7dc86639
YO
1477 unsigned char *seed= PERL_HASH_SEED;
1478 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1479 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1480 while (seed < seed_end) {
1481 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1482 }
6a5b4183
YO
1483#ifdef PERL_HASH_RANDOMIZE_KEYS
1484 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1485 PL_HASH_RAND_BITS_ENABLED,
1486 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1487#endif
7dc86639
YO
1488 PerlIO_printf(Perl_debug_log, "\n");
1489 }
b0891165
JH
1490 }
1491#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1492 PL_origargc = argc;
e2975953 1493 PL_origargv = argv;
a0d0e21e 1494
a2722ac9
GA
1495 if (PL_origalen != 0) {
1496 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1497 }
1498 else {
3cb9023d
JH
1499 /* Set PL_origalen be the sum of the contiguous argv[]
1500 * elements plus the size of the env in case that it is
e9137a8e 1501 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1502 * as the maximum modifiable length of $0. In the worst case
1503 * the area we are able to modify is limited to the size of
43c32782 1504 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1505 * --jhi */
e1ec3a88 1506 const char *s = NULL;
54bfe034 1507 int i;
b7249aaf 1508 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1509 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1510 const UV aligned =
43c32782
JH
1511 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1512
1513 /* See if all the arguments are contiguous in memory. Note
1514 * that 'contiguous' is a loose term because some platforms
1515 * align the argv[] and the envp[]. If the arguments look
1516 * like non-aligned, assume that they are 'strictly' or
1517 * 'traditionally' contiguous. If the arguments look like
1518 * aligned, we just check that they are within aligned
1519 * PTRSIZE bytes. As long as no system has something bizarre
1520 * like the argv[] interleaved with some other data, we are
1521 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1522 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1523 while (*s) s++;
1524 for (i = 1; i < PL_origargc; i++) {
1525 if ((PL_origargv[i] == s + 1
43c32782 1526#ifdef OS2
c8941eeb 1527 || PL_origargv[i] == s + 2
43c32782 1528#endif
c8941eeb
JH
1529 )
1530 ||
1531 (aligned &&
1532 (PL_origargv[i] > s &&
1533 PL_origargv[i] <=
1534 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1535 )
1536 {
1537 s = PL_origargv[i];
1538 while (*s) s++;
1539 }
1540 else
1541 break;
54bfe034 1542 }
54bfe034 1543 }
a4a109c2
JD
1544
1545#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1546 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1547 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1548 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1549 ||
1550 (aligned &&
1551 (PL_origenviron[0] > s &&
1552 PL_origenviron[0] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 )
1555 {
9d419b5f 1556#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1557 s = PL_origenviron[0];
1558 while (*s) s++;
1559#endif
bd61b366 1560 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1561 /* Force copy of environment. */
1562 for (i = 1; PL_origenviron[i]; i++) {
1563 if (PL_origenviron[i] == s + 1
1564 ||
1565 (aligned &&
1566 (PL_origenviron[i] > s &&
1567 PL_origenviron[i] <=
1568 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1569 )
1570 {
1571 s = PL_origenviron[i];
1572 while (*s) s++;
1573 }
1574 else
1575 break;
54bfe034 1576 }
43c32782 1577 }
54bfe034 1578 }
a4a109c2
JD
1579#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1580
2d2af554 1581 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1582 }
1583
3280af22 1584 if (PL_do_undump) {
a0d0e21e
LW
1585
1586 /* Come here if running an undumped a.out. */
1587
3280af22
NIS
1588 PL_origfilename = savepv(argv[0]);
1589 PL_do_undump = FALSE;
a0d0e21e 1590 cxstack_ix = -1; /* start label stack again */
748a9306 1591 init_ids();
284167a5 1592 assert (!TAINT_get);
b7975bdd 1593 TAINT;
e2051532 1594 set_caret_X();
b7975bdd 1595 TAINT_NOT;
a0d0e21e
LW
1596 init_postdump_symbols(argc,argv,env);
1597 return 0;
1598 }
1599
3280af22 1600 if (PL_main_root) {
3280af22 1601 op_free(PL_main_root);
5f66b61c 1602 PL_main_root = NULL;
ff0cee69 1603 }
5f66b61c 1604 PL_main_start = NULL;
3280af22 1605 SvREFCNT_dec(PL_main_cv);
601f1833 1606 PL_main_cv = NULL;
79072805 1607
3280af22
NIS
1608 time(&PL_basetime);
1609 oldscope = PL_scopestack_ix;
599cee73 1610 PL_dowarn = G_WARN_OFF;
f86702cc 1611
14dd3ad8 1612 JMPENV_PUSH(ret);
6224f72b 1613 switch (ret) {
312caa8e 1614 case 0:
14dd3ad8 1615 parse_body(env,xsinit);
9ebf26ad 1616 if (PL_unitcheckav) {
3c10abe3 1617 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1618 }
1619 if (PL_checkav) {
ca7b837b 1620 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1621 call_list(oldscope, PL_checkav);
9ebf26ad 1622 }
14dd3ad8
GS
1623 ret = 0;
1624 break;
6224f72b
GS
1625 case 1:
1626 STATUS_ALL_FAILURE;
924ba076 1627 /* FALLTHROUGH */
6224f72b
GS
1628 case 2:
1629 /* my_exit() was called */
3280af22 1630 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1631 LEAVE;
1632 FREETMPS;
03d9f026 1633 SET_CURSTASH(PL_defstash);
9ebf26ad 1634 if (PL_unitcheckav) {
3c10abe3 1635 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1636 }
1637 if (PL_checkav) {
ca7b837b 1638 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1639 call_list(oldscope, PL_checkav);
9ebf26ad 1640 }
37038d91 1641 ret = STATUS_EXIT;
14dd3ad8 1642 break;
6224f72b 1643 case 3:
bf49b057 1644 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1645 ret = 1;
1646 break;
6224f72b 1647 }
14dd3ad8
GS
1648 JMPENV_POP;
1649 return ret;
1650}
1651
4a5df386
NC
1652/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1653 miniperl, and we need to see those flags reflected in the values here. */
1654
1655/* What this returns is subject to change. Use the public interface in Config.
1656 */
1657static void
1658S_Internals_V(pTHX_ CV *cv)
1659{
1660 dXSARGS;
1661#ifdef LOCAL_PATCH_COUNT
1662 const int local_patch_count = LOCAL_PATCH_COUNT;
1663#else
1664 const int local_patch_count = 0;
1665#endif
2dc296d2 1666 const int entries = 3 + local_patch_count;
4a5df386 1667 int i;
fe1c5936 1668 static const char non_bincompat_options[] =
4a5df386
NC
1669# ifdef DEBUGGING
1670 " DEBUGGING"
1671# endif
1672# ifdef NO_MATHOMS
0d311fbe 1673 " NO_MATHOMS"
4a5df386 1674# endif
59b86f4b
DM
1675# ifdef NO_HASH_SEED
1676 " NO_HASH_SEED"
1677# endif
3b0e4ee2
MB
1678# ifdef NO_TAINT_SUPPORT
1679 " NO_TAINT_SUPPORT"
1680# endif
cb26ef7a
MB
1681# ifdef PERL_BOOL_AS_CHAR
1682 " PERL_BOOL_AS_CHAR"
1683# endif
4a5df386
NC
1684# ifdef PERL_DISABLE_PMC
1685 " PERL_DISABLE_PMC"
1686# endif
1687# ifdef PERL_DONT_CREATE_GVSV
1688 " PERL_DONT_CREATE_GVSV"
1689# endif
9a044a43
NC
1690# ifdef PERL_EXTERNAL_GLOB
1691 " PERL_EXTERNAL_GLOB"
1692# endif
59b86f4b
DM
1693# ifdef PERL_HASH_FUNC_SIPHASH
1694 " PERL_HASH_FUNC_SIPHASH"
1695# endif
1696# ifdef PERL_HASH_FUNC_SDBM
1697 " PERL_HASH_FUNC_SDBM"
1698# endif
1699# ifdef PERL_HASH_FUNC_DJB2
1700 " PERL_HASH_FUNC_DJB2"
1701# endif
1702# ifdef PERL_HASH_FUNC_SUPERFAST
1703 " PERL_HASH_FUNC_SUPERFAST"
1704# endif
1705# ifdef PERL_HASH_FUNC_MURMUR3
1706 " PERL_HASH_FUNC_MURMUR3"
1707# endif
1708# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1709 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1710# endif
1711# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1712 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1713# endif
1714# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1715 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1716# endif
4a5df386
NC
1717# ifdef PERL_IS_MINIPERL
1718 " PERL_IS_MINIPERL"
1719# endif
1720# ifdef PERL_MALLOC_WRAP
1721 " PERL_MALLOC_WRAP"
1722# endif
1723# ifdef PERL_MEM_LOG
1724 " PERL_MEM_LOG"
1725# endif
1726# ifdef PERL_MEM_LOG_NOIMPL
1727 " PERL_MEM_LOG_NOIMPL"
1728# endif
2542212d
DM
1729# ifdef PERL_NEW_COPY_ON_WRITE
1730 " PERL_NEW_COPY_ON_WRITE"
1731# endif
59b86f4b
DM
1732# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1733 " PERL_PERTURB_KEYS_DETERMINISTIC"
1734# endif
1735# ifdef PERL_PERTURB_KEYS_DISABLED
1736 " PERL_PERTURB_KEYS_DISABLED"
1737# endif
1738# ifdef PERL_PERTURB_KEYS_RANDOM
1739 " PERL_PERTURB_KEYS_RANDOM"
1740# endif
c3cf41ec
NC
1741# ifdef PERL_PRESERVE_IVUV
1742 " PERL_PRESERVE_IVUV"
1743# endif
c051e30b
NC
1744# ifdef PERL_RELOCATABLE_INCPUSH
1745 " PERL_RELOCATABLE_INCPUSH"
1746# endif
4a5df386
NC
1747# ifdef PERL_USE_DEVEL
1748 " PERL_USE_DEVEL"
1749# endif
1750# ifdef PERL_USE_SAFE_PUTENV
1751 " PERL_USE_SAFE_PUTENV"
1752# endif
a3749cf3
NC
1753# ifdef UNLINK_ALL_VERSIONS
1754 " UNLINK_ALL_VERSIONS"
1755# endif
de618ee4
NC
1756# ifdef USE_ATTRIBUTES_FOR_PERLIO
1757 " USE_ATTRIBUTES_FOR_PERLIO"
1758# endif
4a5df386
NC
1759# ifdef USE_FAST_STDIO
1760 " USE_FAST_STDIO"
1761# endif
59b86f4b
DM
1762# ifdef USE_HASH_SEED_EXPLICIT
1763 " USE_HASH_SEED_EXPLICIT"
1764# endif
98548bdf
NC
1765# ifdef USE_LOCALE
1766 " USE_LOCALE"
1767# endif
98548bdf
NC
1768# ifdef USE_LOCALE_CTYPE
1769 " USE_LOCALE_CTYPE"
1770# endif
5a8d8935
NC
1771# ifdef USE_PERL_ATOF
1772 " USE_PERL_ATOF"
1773# endif
0d311fbe
NC
1774# ifdef USE_SITECUSTOMIZE
1775 " USE_SITECUSTOMIZE"
1776# endif
4a5df386
NC
1777 ;
1778 PERL_UNUSED_ARG(cv);
d3db1514 1779 PERL_UNUSED_VAR(items);
4a5df386
NC
1780
1781 EXTEND(SP, entries);
1782
1783 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1784 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1785 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1786
1787#ifdef __DATE__
1788# ifdef __TIME__
1789 PUSHs(Perl_newSVpvn_flags(aTHX_
1790 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1791 SVs_TEMP));
1792# else
1793 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1794 SVs_TEMP));
1795# endif
1796#else
1797 PUSHs(&PL_sv_undef);
1798#endif
1799
4a5df386
NC
1800 for (i = 1; i <= local_patch_count; i++) {
1801 /* This will be an undef, if PL_localpatches[i] is NULL. */
1802 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1803 }
1804
1805 XSRETURN(entries);
1806}
1807
be71fc8f
NC
1808#define INCPUSH_UNSHIFT 0x01
1809#define INCPUSH_ADD_OLD_VERS 0x02
1810#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1811#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1812#define INCPUSH_NOT_BASEDIR 0x10
1813#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1814#define INCPUSH_ADD_SUB_DIRS \
1815 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1816
312caa8e 1817STATIC void *
14dd3ad8 1818S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1819{
27da23d5 1820 dVAR;
2f9285f8 1821 PerlIO *rsfp;
312caa8e 1822 int argc = PL_origargc;
8f42b153 1823 char **argv = PL_origargv;
e1ec3a88 1824 const char *scriptname = NULL;
312caa8e 1825 VOL bool dosearch = FALSE;
eb578fdb 1826 char c;
737c24fc 1827 bool doextract = FALSE;
bd61b366 1828 const char *cddir = NULL;
ab019eaa 1829#ifdef USE_SITECUSTOMIZE
20ef40cf 1830 bool minus_f = FALSE;
ab019eaa 1831#endif
95670bde 1832 SV *linestr_sv = NULL;
5486870f 1833 bool add_read_e_script = FALSE;
87606032 1834 U32 lex_start_flags = 0;
009d90df 1835
ca7b837b 1836 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1837
6224f72b 1838 init_main_stash();
54310121 1839
c7030b81
NC
1840 {
1841 const char *s;
6224f72b
GS
1842 for (argc--,argv++; argc > 0; argc--,argv++) {
1843 if (argv[0][0] != '-' || !argv[0][1])
1844 break;
6224f72b
GS
1845 s = argv[0]+1;
1846 reswitch:
47f56822 1847 switch ((c = *s)) {
729a02f2 1848 case 'C':
1d5472a9
GS
1849#ifndef PERL_STRICT_CR
1850 case '\r':
1851#endif
6224f72b
GS
1852 case ' ':
1853 case '0':
1854 case 'F':
1855 case 'a':
1856 case 'c':
1857 case 'd':
1858 case 'D':
1859 case 'h':
1860 case 'i':
1861 case 'l':
1862 case 'M':
1863 case 'm':
1864 case 'n':
1865 case 'p':
1866 case 's':
1867 case 'u':
1868 case 'U':
1869 case 'v':
599cee73
PM
1870 case 'W':
1871 case 'X':
6224f72b 1872 case 'w':
97bd5664 1873 if ((s = moreswitches(s)))
6224f72b
GS
1874 goto reswitch;
1875 break;
33b78306 1876
1dbad523 1877 case 't':
dc6d7f5c 1878#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1879 /* silently ignore */
dc6d7f5c 1880#elif defined(NO_TAINT_SUPPORT)
3231f579 1881 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1882 "Cowardly refusing to run with -t or -T flags");
1883#else
22f7c9c9 1884 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1885 if( !TAINTING_get ) {
1886 TAINT_WARN_set(TRUE);
1887 TAINTING_set(TRUE);
317ea90d 1888 }
284167a5 1889#endif
317ea90d
MS
1890 s++;
1891 goto reswitch;
6224f72b 1892 case 'T':
dc6d7f5c 1893#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1894 /* silently ignore */
dc6d7f5c 1895#elif defined(NO_TAINT_SUPPORT)
3231f579 1896 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1897 "Cowardly refusing to run with -t or -T flags");
1898#else
22f7c9c9 1899 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1900 TAINTING_set(TRUE);
1901 TAINT_WARN_set(FALSE);
1902#endif
6224f72b
GS
1903 s++;
1904 goto reswitch;
f86702cc 1905
bc9b29db
RH
1906 case 'E':
1907 PL_minus_E = TRUE;
924ba076 1908 /* FALLTHROUGH */
6224f72b 1909 case 'e':
f20b2998 1910 forbid_setid('e', FALSE);
3280af22 1911 if (!PL_e_script) {
396482e1 1912 PL_e_script = newSVpvs("");
5486870f 1913 add_read_e_script = TRUE;
6224f72b
GS
1914 }
1915 if (*++s)
3280af22 1916 sv_catpv(PL_e_script, s);
6224f72b 1917 else if (argv[1]) {
3280af22 1918 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1919 argc--,argv++;
1920 }
1921 else
47f56822 1922 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1923 sv_catpvs(PL_e_script, "\n");
6224f72b 1924 break;
afe37c7d 1925
20ef40cf 1926 case 'f':
f5542d3a 1927#ifdef USE_SITECUSTOMIZE
20ef40cf 1928 minus_f = TRUE;
f5542d3a 1929#endif
20ef40cf
GA
1930 s++;
1931 goto reswitch;
1932
6224f72b 1933 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1934 forbid_setid('I', FALSE);
bd61b366 1935 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1936 argc--,argv++;
1937 }
6224f72b 1938 if (s && *s) {
0df16ed7 1939 STRLEN len = strlen(s);
55b4bc1c 1940 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1941 }
1942 else
a67e862a 1943 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1944 break;
6224f72b 1945 case 'S':
f20b2998 1946 forbid_setid('S', FALSE);
6224f72b
GS
1947 dosearch = TRUE;
1948 s++;
1949 goto reswitch;
1950 case 'V':
7edfd0ef
NC
1951 {
1952 SV *opts_prog;
1953
7edfd0ef 1954 if (*++s != ':') {
37ca4a5b 1955 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1956 }
1957 else {
1958 ++s;
1959 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1960 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1961 0, s, 0);
1962 s += strlen(s);
1963 }
37ca4a5b 1964 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1965 /* don't look for script or read stdin */
1966 scriptname = BIT_BUCKET;
1967 goto reswitch;
6224f72b 1968 }
6224f72b 1969 case 'x':
737c24fc 1970 doextract = TRUE;
6224f72b 1971 s++;
304334da 1972 if (*s)
f4c556ac 1973 cddir = s;
6224f72b
GS
1974 break;
1975 case 0:
1976 break;
1977 case '-':
1978 if (!*++s || isSPACE(*s)) {
1979 argc--,argv++;
1980 goto switch_end;
1981 }
ee8bc8b7
NC
1982 /* catch use of gnu style long options.
1983 Both of these exit immediately. */
1984 if (strEQ(s, "version"))
1985 minus_v();
1986 if (strEQ(s, "help"))
1987 usage();
6224f72b 1988 s--;
924ba076 1989 /* FALLTHROUGH */
6224f72b 1990 default:
cea2e8a9 1991 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1992 }
1993 }
c7030b81
NC
1994 }
1995
6224f72b 1996 switch_end:
54310121 1997
c7030b81
NC
1998 {
1999 char *s;
2000
f675dbe5
CB
2001 if (
2002#ifndef SECURE_INTERNAL_GETENV
284167a5 2003 !TAINTING_get &&
f675dbe5 2004#endif
cf756827 2005 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2006 {
74288ac8
GS
2007 while (isSPACE(*s))
2008 s++;
317ea90d 2009 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2010#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2011 /* silently ignore */
dc6d7f5c 2012#elif defined(NO_TAINT_SUPPORT)
3231f579 2013 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2014 "Cowardly refusing to run with -t or -T flags");
2015#else
22f7c9c9 2016 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2017 TAINTING_set(TRUE);
2018 TAINT_WARN_set(FALSE);
2019#endif
317ea90d 2020 }
74288ac8 2021 else {
bd61b366 2022 char *popt_copy = NULL;
74288ac8 2023 while (s && *s) {
54913509 2024 const char *d;
74288ac8
GS
2025 while (isSPACE(*s))
2026 s++;
2027 if (*s == '-') {
2028 s++;
2029 if (isSPACE(*s))
2030 continue;
2031 }
4ea8f8fb 2032 d = s;
74288ac8
GS
2033 if (!*s)
2034 break;
2b622f1a 2035 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2036 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2037 while (++s && *s) {
2038 if (isSPACE(*s)) {
cf756827 2039 if (!popt_copy) {
bfa6c418
NC
2040 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2041 s = popt_copy + (s - d);
2042 d = popt_copy;
cf756827 2043 }
4ea8f8fb
MS
2044 *s++ = '\0';
2045 break;
2046 }
2047 }
1c4db469 2048 if (*d == 't') {
dc6d7f5c 2049#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2050 /* silently ignore */
dc6d7f5c 2051#elif defined(NO_TAINT_SUPPORT)
3231f579 2052 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2053 "Cowardly refusing to run with -t or -T flags");
2054#else
2055 if( !TAINTING_get) {
2056 TAINT_WARN_set(TRUE);
2057 TAINTING_set(TRUE);
317ea90d 2058 }
284167a5 2059#endif
1c4db469 2060 } else {
97bd5664 2061 moreswitches(d);
1c4db469 2062 }
6224f72b 2063 }
6224f72b
GS
2064 }
2065 }
c7030b81 2066 }
a0d0e21e 2067
c29067d7
CH
2068 /* Set $^X early so that it can be used for relocatable paths in @INC */
2069 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2070 assert (!TAINT_get);
c29067d7 2071 TAINT;
e2051532 2072 set_caret_X();
c29067d7
CH
2073 TAINT_NOT;
2074
43c0c913 2075#if defined(USE_SITECUSTOMIZE)
20ef40cf 2076 if (!minus_f) {
43c0c913 2077 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2078 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2079 ie a q() operator with a NUL byte as a the delimiter. This avoids
2080 problems with pathnames containing (say) ' */
43c0c913
NC
2081# ifdef PERL_IS_MINIPERL
2082 AV *const inc = GvAV(PL_incgv);
2083 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2084
2085 if (inc0) {
15870c5c
NC
2086 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2087 it should be reported immediately as a build failure. */
43c0c913
NC
2088 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2089 Perl_newSVpvf(aTHX_
5de87db5 2090 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2091 "do {local $!; -f $f }"
2092 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2093 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2094 }
2095# else
2096 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2097 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2098 if (raw_sitelib) {
2099 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2100 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2101 INCPUSH_CAN_RELOCATE);
2102 const char *const sitelib = SvPVX(sitelib_sv);
2103 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2104 Perl_newSVpvf(aTHX_
2105 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2106 0, SVfARG(sitelib), 0,
2107 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2108 assert (SvREFCNT(sitelib_sv) == 1);
2109 SvREFCNT_dec(sitelib_sv);
2110 }
43c0c913 2111# endif
20ef40cf
GA
2112 }
2113#endif
2114
6224f72b
GS
2115 if (!scriptname)
2116 scriptname = argv[0];
3280af22 2117 if (PL_e_script) {
6224f72b
GS
2118 argc++,argv--;
2119 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2120 }
bd61b366 2121 else if (scriptname == NULL) {
6224f72b
GS
2122#ifdef MSDOS
2123 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2124 moreswitches("h");
6224f72b
GS
2125#endif
2126 scriptname = "-";
2127 }
2128
284167a5 2129 assert (!TAINT_get);
2cace6ac 2130 init_perllib();
6224f72b 2131
a52eba0e 2132 {
f20b2998 2133 bool suidscript = FALSE;
829372d3 2134
8d113837 2135 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2136 if (!rsfp) {
2137 rsfp = PerlIO_stdin();
87606032 2138 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2139 }
6224f72b 2140
b24bc095 2141 validate_suid(rsfp);
6224f72b 2142
64ca3a65 2143#ifndef PERL_MICRO
a52eba0e
NC
2144# if defined(SIGCHLD) || defined(SIGCLD)
2145 {
2146# ifndef SIGCHLD
2147# define SIGCHLD SIGCLD
2148# endif
2149 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2150 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2151 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2152 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2153 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2154 }
0b5b802d 2155 }
a52eba0e 2156# endif
64ca3a65 2157#endif
0b5b802d 2158
737c24fc 2159 if (doextract) {
faef540c 2160
f20b2998 2161 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2162 setuid scripts. */
2163 forbid_setid('x', suidscript);
f20b2998 2164 /* Hence you can't get here if suidscript is true */
faef540c 2165
95670bde
NC
2166 linestr_sv = newSV_type(SVt_PV);
2167 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2168 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2169 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2170 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2171 }
f4c556ac 2172 }
6224f72b 2173
ea726b52 2174 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2175 CvUNIQUE_on(PL_compcv);
2176
eacbb379 2177 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2178
dd69841b
BB
2179 PL_isarev = newHV();
2180
0c4f7ff0 2181 boot_core_PerlIO();
6224f72b 2182 boot_core_UNIVERSAL();
e1a479c5 2183 boot_core_mro();
4a5df386 2184 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2185
2186 if (xsinit)
acfe0abc 2187 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2188#ifndef PERL_MICRO
739a0b84 2189#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2190 init_os_extras();
6224f72b 2191#endif
64ca3a65 2192#endif
6224f72b 2193
29209bc5 2194#ifdef USE_SOCKS
1b9c9cf5
DH
2195# ifdef HAS_SOCKS5_INIT
2196 socks5_init(argv[0]);
2197# else
29209bc5 2198 SOCKSinit(argv[0]);
1b9c9cf5 2199# endif
ac27b0f5 2200#endif
29209bc5 2201
6224f72b
GS
2202 init_predump_symbols();
2203 /* init_postdump_symbols not currently designed to be called */
2204 /* more than once (ENV isn't cleared first, for example) */
2205 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2206 if (!PL_do_undump)
6224f72b
GS
2207 init_postdump_symbols(argc,argv,env);
2208
27da23d5
JH
2209 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2210 * or explicitly in some platforms.
085a54d9 2211 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2212 * look like the user wants to use UTF-8. */
a0fd4948 2213#if defined(__SYMBIAN32__)
27da23d5
JH
2214 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2215#endif
e27b5b51 2216# ifndef PERL_IS_MINIPERL
06e66572
JH
2217 if (PL_unicode) {
2218 /* Requires init_predump_symbols(). */
a05d7ebb 2219 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2220 IO* io;
2221 PerlIO* fp;
2222 SV* sv;
2223
a05d7ebb 2224 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2225 * and the default open disciplines. */
a05d7ebb
JH
2226 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2227 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2228 (fp = IoIFP(io)))
2229 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2230 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2231 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2232 (fp = IoOFP(io)))
2233 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2234 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2235 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2236 (fp = IoOFP(io)))
2237 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2238 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2239 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2240 SVt_PV)))) {
a05d7ebb
JH
2241 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2242 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2243 if (in) {
2244 if (out)
76f68e9b 2245 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2246 else
76f68e9b 2247 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2248 }
2249 else if (out)
76f68e9b 2250 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2251 SvSETMAGIC(sv);
2252 }
b310b053
JH
2253 }
2254 }
e27b5b51 2255#endif
b310b053 2256
c7030b81
NC
2257 {
2258 const char *s;
4ffa73a3
JH
2259 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2260 if (strEQ(s, "unsafe"))
2261 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2262 else if (strEQ(s, "safe"))
2263 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2264 else
2265 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2266 }
c7030b81 2267 }
4ffa73a3 2268
81d86705 2269
87606032 2270 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2271 SvREFCNT_dec(linestr_sv);
95670bde 2272
219f7226 2273 PL_subname = newSVpvs("main");
6224f72b 2274
5486870f
DM
2275 if (add_read_e_script)
2276 filter_add(read_e_script, NULL);
2277
6224f72b
GS
2278 /* now parse the script */
2279
93189314 2280 SETERRNO(0,SS_NORMAL);
28ac2b49 2281 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2282 if (PL_minus_c)
cea2e8a9 2283 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2284 else {
cea2e8a9 2285 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2286 PL_origfilename);
6224f72b
GS
2287 }
2288 }
57843af0 2289 CopLINE_set(PL_curcop, 0);
03d9f026 2290 SET_CURSTASH(PL_defstash);
3280af22
NIS
2291 if (PL_e_script) {
2292 SvREFCNT_dec(PL_e_script);
a0714e2c 2293 PL_e_script = NULL;
6224f72b
GS
2294 }
2295
3280af22 2296 if (PL_do_undump)
6224f72b
GS
2297 my_unexec();
2298
57843af0
GS
2299 if (isWARN_ONCE) {
2300 SAVECOPFILE(PL_curcop);
2301 SAVECOPLINE(PL_curcop);
3280af22 2302 gv_check(PL_defstash);
57843af0 2303 }
6224f72b
GS
2304
2305 LEAVE;
2306 FREETMPS;
2307
2308#ifdef MYMALLOC
f6a607bc
RGS
2309 {
2310 const char *s;
96e440d2
JH
2311 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2312 dump_mstats("after compilation:");
f6a607bc 2313 }
6224f72b
GS
2314#endif
2315
2316 ENTER;
febb3a6d 2317 PL_restartjmpenv = NULL;
3280af22 2318 PL_restartop = 0;
312caa8e 2319 return NULL;
6224f72b
GS
2320}
2321
954c1994
GS
2322/*
2323=for apidoc perl_run
2324
2325Tells a Perl interpreter to run. See L<perlembed>.
2326
2327=cut
2328*/
2329
6224f72b 2330int
0cb96387 2331perl_run(pTHXx)
6224f72b 2332{
6224f72b 2333 I32 oldscope;
14dd3ad8 2334 int ret = 0;
db36c5a1 2335 dJMPENV;
6224f72b 2336
7918f24d
NC
2337 PERL_ARGS_ASSERT_PERL_RUN;
2338#ifndef MULTIPLICITY
ed6c66dd 2339 PERL_UNUSED_ARG(my_perl);
7918f24d 2340#endif
9d4ba2ae 2341
3280af22 2342 oldscope = PL_scopestack_ix;
96e176bf
CL
2343#ifdef VMS
2344 VMSISH_HUSHED = 0;
2345#endif
6224f72b 2346
14dd3ad8 2347 JMPENV_PUSH(ret);
6224f72b
GS
2348 switch (ret) {
2349 case 1:
2350 cxstack_ix = -1; /* start context stack again */
312caa8e 2351 goto redo_body;
14dd3ad8 2352 case 0: /* normal completion */
14dd3ad8
GS
2353 redo_body:
2354 run_body(oldscope);
924ba076 2355 /* FALLTHROUGH */
14dd3ad8 2356 case 2: /* my_exit() */
3280af22 2357 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2358 LEAVE;
2359 FREETMPS;
03d9f026 2360 SET_CURSTASH(PL_defstash);
3a1ee7e8 2361 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2362 PL_endav && !PL_minus_c) {
ca7b837b 2363 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2364 call_list(oldscope, PL_endav);
9ebf26ad 2365 }
6224f72b
GS
2366#ifdef MYMALLOC
2367 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2368 dump_mstats("after execution: ");
2369#endif
37038d91 2370 ret = STATUS_EXIT;
14dd3ad8 2371 break;
6224f72b 2372 case 3:
312caa8e
CS
2373 if (PL_restartop) {
2374 POPSTACK_TO(PL_mainstack);
2375 goto redo_body;
6224f72b 2376 }
5637ef5b 2377 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2378 FREETMPS;
14dd3ad8
GS
2379 ret = 1;
2380 break;
6224f72b
GS
2381 }
2382
14dd3ad8
GS
2383 JMPENV_POP;
2384 return ret;
312caa8e
CS
2385}
2386
dd374669 2387STATIC void
14dd3ad8
GS
2388S_run_body(pTHX_ I32 oldscope)
2389{
d3b97530
DM
2390 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2391 PL_sawampersand ? "Enabling" : "Omitting",
2392 (unsigned int)(PL_sawampersand)));
6224f72b 2393
3280af22 2394 if (!PL_restartop) {
cf2782cd 2395#ifdef DEBUGGING
f0e3f042
CS
2396 if (DEBUG_x_TEST || DEBUG_B_TEST)
2397 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2398 if (!DEBUG_q_TEST)
2399 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2400#endif
6224f72b 2401
3280af22 2402 if (PL_minus_c) {
bf49b057 2403 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2404 my_exit(0);
2405 }
3280af22 2406 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2407 PL_DBsingle_iv = 1;
9ebf26ad 2408 if (PL_initav) {
ca7b837b 2409 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2410 call_list(oldscope, PL_initav);
9ebf26ad 2411 }
f1fac472 2412#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2413 if (PL_main_root && PL_main_root->op_slabbed)
2414 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2415#endif
6224f72b
GS
2416 }
2417
2418 /* do it */
2419
ca7b837b 2420 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2421
3280af22 2422 if (PL_restartop) {
febb3a6d 2423 PL_restartjmpenv = NULL;
533c011a 2424 PL_op = PL_restartop;
3280af22 2425 PL_restartop = 0;
cea2e8a9 2426 CALLRUNOPS(aTHX);
6224f72b 2427 }
3280af22
NIS
2428 else if (PL_main_start) {
2429 CvDEPTH(PL_main_cv) = 1;
533c011a 2430 PL_op = PL_main_start;
cea2e8a9 2431 CALLRUNOPS(aTHX);
6224f72b 2432 }
f6b3007c 2433 my_exit(0);
e5964223 2434 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2435}
2436
954c1994 2437/*
ccfc67b7
JH
2438=head1 SV Manipulation Functions
2439
954c1994
GS
2440=for apidoc p||get_sv
2441
64ace3f8 2442Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2443C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2444Perl variable does not exist then it will be created. If C<flags> is zero
2445and the variable does not exist then NULL is returned.
954c1994
GS
2446
2447=cut
2448*/
2449
6224f72b 2450SV*
64ace3f8 2451Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2452{
2453 GV *gv;
7918f24d
NC
2454
2455 PERL_ARGS_ASSERT_GET_SV;
2456
64ace3f8 2457 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2458 if (gv)
2459 return GvSV(gv);
a0714e2c 2460 return NULL;
6224f72b
GS
2461}
2462
954c1994 2463/*
ccfc67b7
JH
2464=head1 Array Manipulation Functions
2465
954c1994
GS
2466=for apidoc p||get_av
2467
f0b90de1
SF
2468Returns the AV of the specified Perl global or package array with the given
2469name (so it won't work on lexical variables). C<flags> are passed
72d33970 2470to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2471Perl variable does not exist then it will be created. If C<flags> is zero
2472and the variable does not exist then NULL is returned.
954c1994 2473
f0b90de1
SF
2474Perl equivalent: C<@{"$name"}>.
2475
954c1994
GS
2476=cut
2477*/
2478
6224f72b 2479AV*
cbfd0a87 2480Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2481{
cbfd0a87 2482 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2483
2484 PERL_ARGS_ASSERT_GET_AV;
2485
cbfd0a87 2486 if (flags)
6224f72b
GS
2487 return GvAVn(gv);
2488 if (gv)
2489 return GvAV(gv);
7d49f689 2490 return NULL;
6224f72b
GS
2491}
2492
954c1994 2493/*
ccfc67b7
JH
2494=head1 Hash Manipulation Functions
2495
954c1994
GS
2496=for apidoc p||get_hv
2497
6673a63c 2498Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2499C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2500Perl variable does not exist then it will be created. If C<flags> is zero
2501and the variable does not exist then NULL is returned.
954c1994
GS
2502
2503=cut
2504*/
2505
6224f72b 2506HV*
6673a63c 2507Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2508{
6673a63c 2509 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2510
2511 PERL_ARGS_ASSERT_GET_HV;
2512
6673a63c 2513 if (flags)
a0d0e21e
LW
2514 return GvHVn(gv);
2515 if (gv)
2516 return GvHV(gv);
5c284bb0 2517 return NULL;
a0d0e21e
LW
2518}
2519
954c1994 2520/*
ccfc67b7
JH
2521=head1 CV Manipulation Functions
2522
780a5241
NC
2523=for apidoc p||get_cvn_flags
2524
2525Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2526C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2527exist then it will be declared (which has the same effect as saying
2528C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2529then NULL is returned.
2530
954c1994
GS
2531=for apidoc p||get_cv
2532
780a5241 2533Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2534
2535=cut
2536*/
2537
a0d0e21e 2538CV*
780a5241 2539Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2540{
780a5241 2541 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2542
2543 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2544
334dda80
FC
2545 /* XXX this is probably not what they think they're getting.
2546 * It has the same effect as "sub name;", i.e. just a forward
2547 * declaration! */
780a5241 2548 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2549 return newSTUB(gv,0);
780a5241 2550 }
a0d0e21e 2551 if (gv)
8ebc5c01 2552 return GvCVu(gv);
601f1833 2553 return NULL;
a0d0e21e
LW
2554}
2555
2c67934f
NC
2556/* Nothing in core calls this now, but we can't replace it with a macro and
2557 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2558CV*
2559Perl_get_cv(pTHX_ const char *name, I32 flags)
2560{
7918f24d
NC
2561 PERL_ARGS_ASSERT_GET_CV;
2562
780a5241
NC
2563 return get_cvn_flags(name, strlen(name), flags);
2564}
2565
79072805
LW
2566/* Be sure to refetch the stack pointer after calling these routines. */
2567
954c1994 2568/*
ccfc67b7
JH
2569
2570=head1 Callback Functions
2571
954c1994
GS
2572=for apidoc p||call_argv
2573
f0b90de1 2574Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2575with C<argv> (a NULL-terminated array of strings) as arguments. See
2576L<perlcall>.
f0b90de1
SF
2577
2578Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2579
2580=cut
2581*/
2582
a0d0e21e 2583I32
5aaab254 2584Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2585
8ac85365
NIS
2586 /* See G_* flags in cop.h */
2587 /* null terminated arg list */
8990e307 2588{
a0d0e21e 2589 dSP;
8990e307 2590
7918f24d
NC
2591 PERL_ARGS_ASSERT_CALL_ARGV;
2592
924508f0 2593 PUSHMARK(SP);
a0d0e21e 2594 if (argv) {
8990e307 2595 while (*argv) {
6e449a3a 2596 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2597 argv++;
2598 }
a0d0e21e 2599 PUTBACK;
8990e307 2600 }
864dbfa3 2601 return call_pv(sub_name, flags);
8990e307
LW
2602}
2603
954c1994
GS
2604/*
2605=for apidoc p||call_pv
2606
2607Performs a callback to the specified Perl sub. See L<perlcall>.
2608
2609=cut
2610*/
2611
a0d0e21e 2612I32
864dbfa3 2613Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2614 /* name of the subroutine */
2615 /* See G_* flags in cop.h */
a0d0e21e 2616{
7918f24d
NC
2617 PERL_ARGS_ASSERT_CALL_PV;
2618
0da0e728 2619 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2620}
2621
954c1994
GS
2622/*
2623=for apidoc p||call_method
2624
2625Performs a callback to the specified Perl method. The blessed object must
2626be on the stack. See L<perlcall>.
2627
2628=cut
2629*/
2630
a0d0e21e 2631I32
864dbfa3 2632Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2633 /* name of the subroutine */
2634 /* See G_* flags in cop.h */
a0d0e21e 2635{
46ca9bac 2636 STRLEN len;
c106c2be 2637 SV* sv;
7918f24d
NC
2638 PERL_ARGS_ASSERT_CALL_METHOD;
2639
46ca9bac 2640 len = strlen(methname);
c106c2be
RZ
2641 sv = flags & G_METHOD_NAMED
2642 ? sv_2mortal(newSVpvn_share(methname, len,0))
2643 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2644
c106c2be 2645 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2646}
2647
2648/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2649/*
2650=for apidoc p||call_sv
2651
2652Performs a callback to the Perl sub whose name is in the SV. See
2653L<perlcall>.
2654
2655=cut
2656*/
2657
a0d0e21e 2658I32
001d637e 2659Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2660 /* See G_* flags in cop.h */
a0d0e21e 2661{
27da23d5 2662 dVAR; dSP;
a0d0e21e 2663 LOGOP myop; /* fake syntax tree node */
b46e009d 2664 METHOP method_op;
aa689395 2665 I32 oldmark;
8ea43dc8 2666 VOL I32 retval = 0;
a0d0e21e 2667 I32 oldscope;
54310121 2668 bool oldcatch = CATCH_GET;
6224f72b 2669 int ret;
c4420975 2670 OP* const oldop = PL_op;
db36c5a1 2671 dJMPENV;
1e422769 2672
7918f24d
NC
2673 PERL_ARGS_ASSERT_CALL_SV;
2674
a0d0e21e
LW
2675 if (flags & G_DISCARD) {
2676 ENTER;
2677 SAVETMPS;
2678 }
2f8edad0
NC
2679 if (!(flags & G_WANT)) {
2680 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2681 */
2682 flags |= G_SCALAR;
2683 }
a0d0e21e 2684
aa689395 2685 Zero(&myop, 1, LOGOP);
f51d4af5 2686 if (!(flags & G_NOARGS))
aa689395 2687 myop.op_flags |= OPf_STACKED;
4f911530 2688 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2689 SAVEOP();
533c011a 2690 PL_op = (OP*)&myop;
aa689395 2691
3280af22 2692 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2693 if (!(flags & G_METHOD_NAMED))
2694 *++PL_stack_sp = sv;
aa689395 2695 oldmark = TOPMARK;
3280af22 2696 oldscope = PL_scopestack_ix;
a0d0e21e 2697
3280af22 2698 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2699 /* Handle first BEGIN of -d. */
3280af22 2700 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2701 /* Try harder, since this may have been a sighandler, thus
2702 * curstash may be meaningless. */
ea726b52 2703 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2704 && !(flags & G_NODEBUG))
5ff48db8 2705 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2706
c106c2be 2707 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2708 Zero(&method_op, 1, METHOP);
2709 method_op.op_next = (OP*)&myop;
2710 PL_op = (OP*)&method_op;
c106c2be 2711 if ( flags & G_METHOD_NAMED ) {
b46e009d 2712 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2713 method_op.op_type = OP_METHOD_NAMED;
2714 method_op.op_u.op_meth_sv = sv;
c106c2be 2715 } else {
b46e009d 2716 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2717 method_op.op_type = OP_METHOD;
c106c2be
RZ
2718 }
2719 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2720 myop.op_type = OP_ENTERSUB;
968b3946
GS
2721 }
2722
312caa8e 2723 if (!(flags & G_EVAL)) {
0cdb2077 2724 CATCH_SET(TRUE);
d6f07c05 2725 CALL_BODY_SUB((OP*)&myop);
312caa8e 2726 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2727 CATCH_SET(oldcatch);
312caa8e
CS
2728 }
2729 else {
d78bda3d 2730 myop.op_other = (OP*)&myop;
3280af22 2731 PL_markstack_ptr--;
edb2152a 2732 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2733 PL_markstack_ptr++;
a0d0e21e 2734
14dd3ad8 2735 JMPENV_PUSH(ret);
edb2152a 2736
6224f72b
GS
2737 switch (ret) {
2738 case 0:
14dd3ad8 2739 redo_body:
d6f07c05 2740 CALL_BODY_SUB((OP*)&myop);
312caa8e 2741 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2742 if (!(flags & G_KEEPERR)) {
ab69dbc2 2743 CLEAR_ERRSV();
8433848b 2744 }
a0d0e21e 2745 break;
6224f72b 2746 case 1:
f86702cc 2747 STATUS_ALL_FAILURE;
924ba076 2748 /* FALLTHROUGH */
6224f72b 2749 case 2:
a0d0e21e 2750 /* my_exit() was called */
03d9f026 2751 SET_CURSTASH(PL_defstash);
a0d0e21e 2752 FREETMPS;
14dd3ad8 2753 JMPENV_POP;
f86702cc 2754 my_exit_jump();
e5964223 2755 NOT_REACHED; /* NOTREACHED */
6224f72b 2756 case 3:
3280af22 2757 if (PL_restartop) {
febb3a6d 2758 PL_restartjmpenv = NULL;
533c011a 2759 PL_op = PL_restartop;
3280af22 2760 PL_restartop = 0;
312caa8e 2761 goto redo_body;
a0d0e21e 2762 }
3280af22 2763 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2764 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2765 retval = 0;
2766 else {
2767 retval = 1;
3280af22 2768 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2769 }
312caa8e 2770 break;
a0d0e21e 2771 }
a0d0e21e 2772
edb2152a
NC
2773 if (PL_scopestack_ix > oldscope)
2774 delete_eval_scope();
14dd3ad8 2775 JMPENV_POP;
a0d0e21e 2776 }
1e422769 2777
a0d0e21e 2778 if (flags & G_DISCARD) {
3280af22 2779 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2780 retval = 0;
2781 FREETMPS;
2782 LEAVE;
2783 }
533c011a 2784 PL_op = oldop;
a0d0e21e
LW
2785 return retval;
2786}
2787
6e72f9df 2788/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2789
954c1994
GS
2790/*
2791=for apidoc p||eval_sv
2792
72d33970
FC
2793Tells Perl to C<eval> the string in the SV. It supports the same flags
2794as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2795
2796=cut
2797*/
2798
a0d0e21e 2799I32
864dbfa3 2800Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2801
8ac85365 2802 /* See G_* flags in cop.h */
a0d0e21e 2803{
97aff369 2804 dVAR;
924508f0 2805 dSP;
a0d0e21e 2806 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2807 VOL I32 oldmark = SP - PL_stack_base;
2808 VOL I32 retval = 0;
6224f72b 2809 int ret;
c4420975 2810 OP* const oldop = PL_op;
db36c5a1 2811 dJMPENV;
84902520 2812
7918f24d
NC
2813 PERL_ARGS_ASSERT_EVAL_SV;
2814
4633a7c4
LW
2815 if (flags & G_DISCARD) {
2816 ENTER;
2817 SAVETMPS;
2818 }
2819
462e5cf6 2820 SAVEOP();
533c011a 2821 PL_op = (OP*)&myop;
5ff48db8 2822 Zero(&myop, 1, UNOP);
3280af22
NIS
2823 EXTEND(PL_stack_sp, 1);
2824 *++PL_stack_sp = sv;
79072805 2825
4633a7c4
LW
2826 if (!(flags & G_NOARGS))
2827 myop.op_flags = OPf_STACKED;
6e72f9df 2828 myop.op_type = OP_ENTEREVAL;
4f911530 2829 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2830 if (flags & G_KEEPERR)
2831 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2832
2833 if (flags & G_RE_REPARSING)
2834 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2835
dedbcade
DM
2836 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2837 * before a PUSHEVAL, which corrupts the stack after a croak */
2838 TAINT_PROPER("eval_sv()");
2839
14dd3ad8 2840 JMPENV_PUSH(ret);
6224f72b
GS
2841 switch (ret) {
2842 case 0:
14dd3ad8 2843 redo_body:
2ba65d5f
DM
2844 if (PL_op == (OP*)(&myop)) {
2845 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2846 if (!PL_op)
2847 goto fail; /* failed in compilation */
2848 }
4aca2f62 2849 CALLRUNOPS(aTHX);
312caa8e 2850 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2851 if (!(flags & G_KEEPERR)) {
ab69dbc2 2852 CLEAR_ERRSV();
8433848b 2853 }
4633a7c4 2854 break;
6224f72b 2855 case 1:
f86702cc 2856 STATUS_ALL_FAILURE;
924ba076 2857 /* FALLTHROUGH */
6224f72b 2858 case 2:
4633a7c4 2859 /* my_exit() was called */
03d9f026 2860 SET_CURSTASH(PL_defstash);
4633a7c4 2861 FREETMPS;
14dd3ad8 2862 JMPENV_POP;
f86702cc 2863 my_exit_jump();
e5964223 2864 NOT_REACHED; /* NOTREACHED */
6224f72b 2865 case 3:
3280af22 2866 if (PL_restartop) {
febb3a6d 2867 PL_restartjmpenv = NULL;
533c011a 2868 PL_op = PL_restartop;
3280af22 2869 PL_restartop = 0;
312caa8e 2870 goto redo_body;
4633a7c4 2871 }
4aca2f62 2872 fail:
3280af22 2873 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2874 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2875 retval = 0;
2876 else {
2877 retval = 1;
3280af22 2878 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2879 }
312caa8e 2880 break;
4633a7c4
LW
2881 }
2882
14dd3ad8 2883 JMPENV_POP;
4633a7c4 2884 if (flags & G_DISCARD) {
3280af22 2885 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2886 retval = 0;
2887 FREETMPS;
2888 LEAVE;
2889 }
533c011a 2890 PL_op = oldop;
4633a7c4
LW
2891 return retval;
2892}
2893
954c1994
GS
2894/*
2895=for apidoc p||eval_pv
2896
422791e4 2897Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2898
2899=cut
2900*/
2901
137443ea 2902SV*
864dbfa3 2903Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2904{
137443ea
PP
2905 SV* sv = newSVpv(p, 0);
2906
7918f24d
NC
2907 PERL_ARGS_ASSERT_EVAL_PV;
2908
864dbfa3 2909 eval_sv(sv, G_SCALAR);
137443ea
PP
2910 SvREFCNT_dec(sv);
2911
ed1786ad
DD
2912 {
2913 dSP;
2914 sv = POPs;
2915 PUTBACK;
2916 }
137443ea 2917
eed484f9
DD
2918 /* just check empty string or undef? */
2919 if (croak_on_error) {
2920 SV * const errsv = ERRSV;
2921 if(SvTRUE_NN(errsv))
2922 /* replace with croak_sv? */
2923 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2924 }
137443ea
PP
2925
2926 return sv;
2927}
2928
4633a7c4
LW
2929/* Require a module. */
2930
954c1994 2931/*
ccfc67b7
JH
2932=head1 Embedding Functions
2933
954c1994
GS
2934=for apidoc p||require_pv
2935
7d3fb230
BS
2936Tells Perl to C<require> the file named by the string argument. It is
2937analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2938implemented that way; consider using load_module instead.
954c1994 2939
7d3fb230 2940=cut */
954c1994 2941
4633a7c4 2942void
864dbfa3 2943Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2944{
d3acc0f7 2945 dSP;
97aff369 2946 SV* sv;
7918f24d
NC
2947
2948 PERL_ARGS_ASSERT_REQUIRE_PV;
2949
e788e7d3 2950 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2951 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2952 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2953 POPSTACK;
79072805
LW
2954}
2955
76e3520e 2956STATIC void
b6f82619 2957S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2958{
ab821d7f 2959 /* This message really ought to be max 23 lines.
75c72d73 2960 * Removed -h because the user already knows that option. Others? */
fb73857a 2961
1566c39d
NC
2962 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2963 minimum of 509 character string literals. */
27da23d5 2964 static const char * const usage_msg[] = {
1566c39d
NC
2965" -0[octal] specify record separator (\\0, if no argument)\n"
2966" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2967" -C[number/list] enables the listed Unicode features\n"
2968" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2969" -d[:debugger] run program under debugger\n"
2970" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2971" -e program one line of program (several -e's allowed, omit programfile)\n"
2972" -E program like -e, but enables all optional features\n"
2973" -f don't do $sitelib/sitecustomize.pl at startup\n"
2974" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2975" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2976" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2977" -l[octal] enable line ending processing, specifies line terminator\n"
2978" -[mM][-]module execute \"use/no module...\" before executing program\n"
2979" -n assume \"while (<>) { ... }\" loop around program\n"
2980" -p assume loop like -n but print line also, like sed\n"
2981" -s enable rudimentary parsing for switches after programfile\n"
2982" -S look for programfile using PATH environment variable\n",
2983" -t enable tainting warnings\n"
2984" -T enable tainting checks\n"
2985" -u dump core after parsing program\n"
2986" -U allow unsafe operations\n"
2987" -v print version, patchlevel and license\n"
2988" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2989" -w enable many useful warnings\n"
1566c39d
NC
2990" -W enable all warnings\n"
2991" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2992" -X disable all warnings\n"
2993" \n"
2994"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2995NULL
2996};
27da23d5 2997 const char * const *p = usage_msg;
1566c39d 2998 PerlIO *out = PerlIO_stdout();
fb73857a 2999
1566c39d
NC
3000 PerlIO_printf(out,
3001 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3002 PL_origargv[0]);
fb73857a 3003 while (*p)
1566c39d 3004 PerlIO_puts(out, *p++);
b6f82619 3005 my_exit(0);
4633a7c4
LW
3006}
3007
b4ab917c
DM
3008/* convert a string of -D options (or digits) into an int.
3009 * sets *s to point to the char after the options */
3010
3011#ifdef DEBUGGING
3012int
e1ec3a88 3013Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3014{
27da23d5 3015 static const char * const usage_msgd[] = {
651b8f1a
NC
3016 " Debugging flag values: (see also -d)\n"
3017 " p Tokenizing and parsing (with v, displays parse stack)\n"
3018 " s Stack snapshots (with v, displays all stacks)\n"
3019 " l Context (loop) stack processing\n"
3020 " t Trace execution\n"
3021 " o Method and overloading resolution\n",
3022 " c String/numeric conversions\n"
3023 " P Print profiling info, source file input state\n"
3024 " m Memory and SV allocation\n"
3025 " f Format processing\n"
3026 " r Regular expression parsing and execution\n"
3027 " x Syntax tree dump\n",
3028 " u Tainting checks\n"
3029 " H Hash dump -- usurps values()\n"
3030 " X Scratchpad allocation\n"
3031 " D Cleaning up\n"
56967202 3032 " S Op slab allocation\n"
651b8f1a
NC
3033 " T Tokenising\n"
3034 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3035 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3036 " v Verbose: use in conjunction with other flags\n"
3037 " C Copy On Write\n"
3038 " A Consistency checks on internal structures\n"
3039 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3040 " M trace smart match resolution\n"
3041 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3042 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3043 NULL
3044 };
b4ab917c 3045 int i = 0;
7918f24d
NC
3046
3047 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3048
b4ab917c
DM
3049 if (isALPHA(**s)) {
3050 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3051 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3052
0eb30aeb 3053 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3054 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3055 if (d)
3056 i |= 1 << (d - debopts);
3057 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3058 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3059 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3060 }
3061 }
e6e64d9b 3062 else if (isDIGIT(**s)) {
96e440d2
JH
3063 const char* e;
3064 i = grok_atou(*s, &e);
3065 if (e)
3066 *s = e;
0eb30aeb 3067 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3068 }
ddcf8bc1 3069 else if (givehelp) {
06e869a4 3070 const char *const *p = usage_msgd;
651b8f1a 3071 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3072 }
b4ab917c
DM
3073 return i;
3074}
3075#endif
3076
79072805
LW
3077/* This routine handles any switches that can be given during run */
3078
c7030b81
NC
3079const char *
3080Perl_moreswitches(pTHX_ const char *s)
79072805 3081{
27da23d5 3082 dVAR;
84c133a0 3083 UV rschar;
0544e6df 3084 const char option = *s; /* used to remember option in -m/-M code */
79072805 3085
7918f24d
NC
3086 PERL_ARGS_ASSERT_MORESWITCHES;
3087
79072805
LW
3088 switch (*s) {
3089 case '0':
a863c7d1 3090 {
f2095865 3091 I32 flags = 0;
a3b680e6 3092 STRLEN numlen;
f2095865
JH
3093
3094 SvREFCNT_dec(PL_rs);
3095 if (s[1] == 'x' && s[2]) {
a3b680e6 3096 const char *e = s+=2;
f2095865
JH
3097 U8 *tmps;
3098
a3b680e6
AL
3099 while (*e)
3100 e++;
f2095865
JH
3101 numlen = e - s;
3102 flags = PERL_SCAN_SILENT_ILLDIGIT;
3103 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3104 if (s + numlen < e) {
3105 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3106 numlen = 0;
3107 s--;
3108 }
396482e1 3109 PL_rs = newSVpvs("");
c5661c80 3110 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3111 tmps = (U8*)SvPVX(PL_rs);
3112 uvchr_to_utf8(tmps, rschar);
3113 SvCUR_set(PL_rs, UNISKIP(rschar));
3114 SvUTF8_on(PL_rs);
3115 }
3116 else {
3117 numlen = 4;
3118 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3119 if (rschar & ~((U8)~0))
3120 PL_rs = &PL_sv_undef;
3121 else if (!rschar && numlen >= 2)
396482e1 3122 PL_rs = newSVpvs("");
f2095865
JH
3123 else {
3124 char ch = (char)rschar;
3125 PL_rs = newSVpvn(&ch, 1);
3126 }
3127 }
64ace3f8 3128 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3129 return s + numlen;
a863c7d1 3130 }
46487f74 3131 case 'C':
a05d7ebb 3132 s++;
dd374669 3133 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3134 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3135 PL_utf8cache = -1;
46487f74 3136 return s;
2304df62 3137 case 'F':
5fc691f1 3138 PL_minus_a = TRUE;
3280af22 3139 PL_minus_F = TRUE;
24ffa309 3140 PL_minus_n = TRUE;
ebce5377
RGS
3141 PL_splitstr = ++s;
3142 while (*s && !isSPACE(*s)) ++s;
e49e380e 3143 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3144 return s;
79072805 3145 case 'a':
3280af22 3146 PL_minus_a = TRUE;
24ffa309 3147 PL_minus_n = TRUE;
79072805
LW
3148 s++;
3149 return s;
3150 case 'c':
3280af22 3151 PL_minus_c = TRUE;
79072805
LW
3152 s++;
3153 return s;
3154 case 'd':
f20b2998 3155 forbid_setid('d', FALSE);
4633a7c4 3156 s++;
2cbb2ee1
RGS
3157
3158 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3159 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3160 ++s;
3161 my_setenv("PERL5DB_THREADED", "1");
3162 }
3163
70c94a19
RR
3164 /* The following permits -d:Mod to accepts arguments following an =
3165 in the fashion that -MSome::Mod does. */
3166 if (*s == ':' || *s == '=') {
b19934fb
NC
3167 const char *start;
3168 const char *end;
3169 SV *sv;
3170
3171 if (*++s == '-') {
3172 ++s;
3173 sv = newSVpvs("no Devel::");
3174 } else {
3175 sv = newSVpvs("use Devel::");
3176 }
3177
3178 start = s;
3179 end = s + strlen(s);
f85893a1 3180
b19934fb 3181 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3182 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3183 if (*s != '=')
f85893a1 3184 sv_catpvn(sv, start, end - start);
70c94a19
RR
3185 else {
3186 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3187 /* Don't use NUL as q// delimiter here, this string goes in the
3188 * environment. */
3189 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3190 }
f85893a1 3191 s = end;
184f32ec 3192 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3193 SvREFCNT_dec(sv);
4633a7c4 3194 }
ed094faf 3195 if (!PL_perldb) {
3280af22 3196 PL_perldb = PERLDB_ALL;
a0d0e21e 3197 init_debugger();
ed094faf 3198 }
79072805
LW
3199 return s;
3200 case 'D':
0453d815 3201 {
79072805 3202#ifdef DEBUGGING
f20b2998 3203 forbid_setid('D', FALSE);
b4ab917c 3204 s++;
dd374669 3205 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3206#else /* !DEBUGGING */
0453d815 3207 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3208 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3209 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3210 for (s++; isWORDCHAR(*s); s++) ;
79072805 3211#endif
79072805 3212 return s;
2b5060ae 3213 NOT_REACHED; /* NOTREACHED */
0453d815 3214 }
4633a7c4 3215 case 'h':
b6f82619 3216 usage();
2b5060ae
DM
3217 NOT_REACHED; /* NOTREACHED */
3218
79072805 3219 case 'i':
43c5f42d 3220 Safefree(PL_inplace);
c030f24b
GH
3221#if defined(__CYGWIN__) /* do backup extension automagically */
3222 if (*(s+1) == '\0') {
c86a4f2e 3223 PL_inplace = savepvs(".bak");
c030f24b
GH
3224 return s+1;
3225 }
3226#endif /* __CYGWIN__ */
5ef5d758 3227 {
d4c19fe8 3228 const char * const start = ++s;
5ef5d758
NC
3229 while (*s && !isSPACE(*s))
3230 ++s;
3231
3232 PL_inplace = savepvn(start, s - start);
3233 }
7b8d334a 3234 if (*s) {
5ef5d758 3235 ++s;
7b8d334a 3236 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3237 s++;
7b8d334a 3238 }
fb73857a 3239 return s;
4e49a025 3240 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3241 forbid_setid('I', FALSE);
fb73857a
PP
3242 ++s;
3243 while (*s && isSPACE(*s))
3244 ++s;
3245 if (*s) {
c7030b81 3246 const char *e, *p;
0df16ed7
GS
3247 p = s;
3248 /* ignore trailing spaces (possibly followed by other switches) */
3249 do {
3250 for (e = p; *e && !isSPACE(*e); e++) ;
3251 p = e;
3252 while (isSPACE(*p))
3253 p++;
3254 } while (*p && *p != '-');
55b4bc1c 3255 incpush(s, e-s,
e28f3139 3256 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3257 s = p;
3258 if (*s == '-')
3259 s++;
79072805
LW
3260 }
3261 else
a67e862a 3262 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3263 return s;
79072805 3264 case 'l':
3280af22 3265 PL_minus_l = TRUE;
79072805 3266 s++;
7889fe52
NIS
3267 if (PL_ors_sv) {
3268 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3269 PL_ors_sv = NULL;
7889fe52 3270 }
79072805 3271 if (isDIGIT(*s)) {
53305cf1 3272 I32 flags = 0;
a3b680e6 3273 STRLEN numlen;
396482e1 3274 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3275 numlen = 3 + (*s == '0');
3276 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3277 s += numlen;
3278 }
3279 else {
8bfdd7d9 3280 if (RsPARA(PL_rs)) {
396482e1 3281 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3282 }
3283 else {
8bfdd7d9 3284 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3285 }
79072805
LW
3286 }
3287 return s;
1a30305b 3288 case 'M':
f20b2998 3289 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3290 /* FALLTHROUGH */
1a30305b 3291 case 'm':
f20b2998 3292 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3293 if (*++s) {
c7030b81 3294 const char *start;
b64cb68c 3295 const char *end;
11343788 3296 SV *sv;
e1ec3a88 3297 const char *use = "use ";
0544e6df 3298 bool colon = FALSE;
a5f75d66 3299 /* -M-foo == 'no foo' */
d0043bd1
NC
3300 /* Leading space on " no " is deliberate, to make both
3301 possibilities the same length. */
3302 if (*s == '-') { use = " no "; ++s; }
3303 sv = newSVpvn(use,4);
a5f75d66 3304 start = s;
1a30305b 3305 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3306 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3307 if( *s++ == ':' ) {
3308 if( *s == ':' )
3309 s++;
3310 else
3311 colon = TRUE;
3312 }
3313 }
3314 if (s == start)
3315 Perl_croak(aTHX_ "Module name required with -%c option",
3316 option);
3317 if (colon)
3318 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3319 "contains single ':'",
63da6837 3320 (int)(s - start), start, option);
b64cb68c 3321 end = s + strlen(s);
c07a80fd 3322 if (*s != '=') {
b64cb68c 3323 sv_catpvn(sv, start, end - start);
0544e6df 3324 if (option == 'm') {
c07a80fd 3325 if (*s != '\0')
cea2e8a9 3326 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3327 sv_catpvs( sv, " ()");
c07a80fd
PP
3328 }
3329 } else {
11343788 3330 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3331 /* Use NUL as q''-delimiter. */
3332 sv_catpvs(sv, " split(/,/,q\0");
3333 ++s;
3334 sv_catpvn(sv, s, end - s);
396482e1 3335 sv_catpvs(sv, "\0)");
c07a80fd 3336 }
b64cb68c 3337 s = end;
29a861e7 3338 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3339 }
3340 else
0544e6df 3341 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3342 return s;
79072805 3343 case 'n':
3280af22 3344 PL_minus_n = TRUE;
79072805
LW
3345 s++;
3346 return s;
3347 case 'p':
3280af22 3348 PL_minus_p = TRUE;
79072805
LW
3349 s++;
3350 return s;
3351 case 's':
f20b2998 3352 forbid_setid('s', FALSE);
3280af22 3353 PL_doswitches = TRUE;
79072805
LW
3354 s++;
3355 return s;
6537fe72 3356 case 't':
27a6968b 3357 case 'T':
dc6d7f5c 3358#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3359 /* silently ignore */
dc6d7f5c 3360#elif defined(NO_TAINT_SUPPORT)
3231f579 3361 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3362 "Cowardly refusing to run with -t or -T flags");
3363#else
3364 if (!TAINTING_get)
27a6968b 3365 TOO_LATE_FOR(*s);
284167a5 3366#endif
6537fe72 3367 s++;
463ee0b2 3368 return s;
79072805 3369 case 'u':
3280af22 3370 PL_do_undump = TRUE;
79072805
LW
3371 s++;
3372 return s;
3373 case 'U':
3280af22 3374 PL_unsafe = TRUE;
79072805
LW
3375 s++;
3376 return s;
3377 case 'v':
c4bc78d9
NC
3378 minus_v();
3379 case 'w':
3380 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3381 PL_dowarn |= G_WARN_ON;
3382 }
3383 s++;
3384 return s;
3385 case 'W':
3386 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3387 if (!specialWARN(PL_compiling.cop_warnings))
3388 PerlMemShared_free(PL_compiling.cop_warnings);
3389 PL_compiling.cop_warnings = pWARN_ALL ;
3390 s++;
3391 return s;
3392 case 'X':
3393 PL_dowarn = G_WARN_ALL_OFF;
3394 if (!specialWARN(PL_compiling.cop_warnings))
3395 PerlMemShared_free(PL_compiling.cop_warnings);
3396 PL_compiling.cop_warnings = pWARN_NONE ;
3397 s++;
3398 return s;
3399 case '*':
3400 case ' ':
3401 while( *s == ' ' )
3402 ++s;
3403 if (s[0] == '-') /* Additional switches on #! line. */
3404 return s+1;
3405 break;
3406 case '-':
3407 case 0:
3408#if defined(WIN32) || !defined(PERL_STRICT_CR)
3409 case '\r':
3410#endif
3411 case '\n':
3412 case '\t':
3413 break;
3414#ifdef ALTERNATE_SHEBANG
3415 case 'S': /* OS/2 needs -S on "extproc" line. */
3416 break;
3417#endif
4bb78d63
CB
3418 case 'e': case 'f': case 'x': case 'E':
3419#ifndef ALTERNATE_SHEBANG
3420 case 'S':
3421#endif
3422 case 'V':
c4bc78d9 3423 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3424 default:
3425 Perl_croak(aTHX_
3426 "Unrecognized switch: -%.1s (-h will show valid options)",s
3427 );
c4bc78d9
NC
3428 }
3429 return NULL;
3430}
3431
3432
3433STATIC void
3434S_minus_v(pTHX)
3435{
fc3381af 3436 PerlIO * PIO_stdout;
46807d8e 3437 {
709aee94
DD
3438 const char * const level_str = "v" PERL_VERSION_STRING;
3439 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3440#ifdef PERL_PATCHNUM
709aee94 3441 SV* level;
23d483e2 3442# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3443 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3444# else
709aee94 3445 static const char num [] = PERL_PATCHNUM;
23d483e2 3446# endif
fc3381af 3447 {
709aee94
DD
3448 const STRLEN num_len = sizeof(num)-1;
3449 /* A very advanced compiler would fold away the strnEQ
3450 and this whole conditional, but most (all?) won't do it.
3451 SV level could also be replaced by with preprocessor
3452 catenation.
3453 */
3454 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3455 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3456 of the interp so it might contain format characters
3457 */
3458 level = newSVpvn(num, num_len);
fc3381af 3459 } else {
709aee94 3460 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3461 }
46807d8e 3462 }
709aee94
DD
3463#else
3464 SV* level = newSVpvn(level_str, level_len);
3465#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3466 PIO_stdout = PerlIO_stdout();
3467 PerlIO_printf(PIO_stdout,
ded326e4
DG
3468 "\nThis is perl " STRINGIFY(PERL_REVISION)
3469 ", version " STRINGIFY(PERL_VERSION)
3470 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3471 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3472 );
709aee94 3473 SvREFCNT_dec_NN(level);
46807d8e 3474 }
fb73857a
PP
3475#if defined(LOCAL_PATCH_COUNT)
3476 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3477 PerlIO_printf(PIO_stdout,
b0e47665
GS
3478 "\n(with %d registered patch%s, "
3479 "see perl -V for more detail)",
bb7a0f54 3480 LOCAL_PATCH_COUNT,
b0e47665 3481 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3482#endif
1a30305b 3483