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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 63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL		 73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL		 76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC		 87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC		 90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
71ad1b0c 95 HINTS_REFCNT_INIT;
e6827a76 96 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM		 97 MUTEX_INIT(&PL_my_ctx_mutex);
98# endif
e6827a76 99 }
c0bce9aa
NC		 100#if defined(USE_ITHREADS)
101 else
102#else
103 /* This always happens for non-ithreads */
104#endif
105 {
e6827a76
NC		 106 PERL_SET_THX(my_perl);
107 }
108}
06d86050 109
cbec8ebe
DM		 110
111/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
112
113void
114Perl_sys_init(int* argc, char*** argv)
115{
4fc0badb 116 dVAR;
7918f24d
NC		 117
118 PERL_ARGS_ASSERT_SYS_INIT;
119
cbec8ebe
DM		 120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
123}
124
125void
126Perl_sys_init3(int* argc, char*** argv, char*** env)
127{
4fc0badb 128 dVAR;
7918f24d
NC		 129
130 PERL_ARGS_ASSERT_SYS_INIT3;
131
cbec8ebe
DM		 132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
136}
137
138void
88772978 139Perl_sys_term(void)
cbec8ebe 140{
4fc0badb 141 dVAR;
bf81751b
DM		 142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
144 }
cbec8ebe
DM		 145}
146
147
32e30700
GS		 148#ifdef PERL_IMPLICIT_SYS
149PerlInterpreter *
7766f137
GS		 150perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
155{
156 PerlInterpreter *my_perl;
7918f24d
NC		 157
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
159
9f653bb5 160 /* Newx() needs interpreter, so call malloc() instead */
32e30700 161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 162 S_init_tls_and_interp(my_perl);
32e30700
GS		 163 Zero(my_perl, 1, PerlInterpreter);
164 PL_Mem = ipM;
7766f137
GS		 165 PL_MemShared = ipMS;
166 PL_MemParse = ipMP;
32e30700
GS		 167 PL_Env = ipE;
168 PL_StdIO = ipStd;
169 PL_LIO = ipLIO;
170 PL_Dir = ipD;
171 PL_Sock = ipS;
172 PL_Proc = ipP;
7cb608b5 173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 174
32e30700
GS		 175 return my_perl;
176}
177#else
954c1994
GS		 178
179/*
ccfc67b7
JH		 180=head1 Embedding Functions
181
954c1994
GS		 182=for apidoc perl_alloc
183
184Allocates a new Perl interpreter. See L<perlembed>.
185
186=cut
187*/
188
93a17b20 189PerlInterpreter *
cea2e8a9 190perl_alloc(void)
79072805 191{
cea2e8a9 192 PerlInterpreter *my_perl;
79072805 193
9f653bb5 194 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 196
e6827a76 197 S_init_tls_and_interp(my_perl);
7cb608b5 198#ifndef PERL_TRACK_MEMPOOL
07409e01 199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC		 200#else
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
203 return my_perl;
204#endif
79072805 205}
32e30700 206#endif /* PERL_IMPLICIT_SYS */
79072805 207
954c1994
GS		 208/*
209=for apidoc perl_construct
210
211Initializes a new Perl interpreter. See L<perlembed>.
212
213=cut
214*/
215
79072805 216void
0cb96387 217perl_construct(pTHXx)
79072805 218{
27da23d5 219 dVAR;
7918f24d
NC		 220
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
222
8990e307 223#ifdef MULTIPLICITY
54aff467 224 init_interp();
ac27b0f5 225 PL_perl_destruct_level = 1;
54aff467 226#else
7918f24d 227 PERL_UNUSED_ARG(my_perl);
54aff467
GS		 228 if (PL_perl_destruct_level > 0)
229 init_interp();
230#endif
34caed6d
DM		 231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
75d476e2
S		 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 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 260#endif
261
52853b95
GS		 262#ifdef HAVE_INTERP_INTERN
263 sys_intern_init();
264#endif
265
3a1ee7e8 266 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 267
3280af22
NIS		 268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 270 PL_errors = newSVpvs("");
76f68e9b
MHM		 271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 274#ifdef USE_ITHREADS
402d2eb1
NC		 275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 278 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 280#endif
e5dd39fc 281#ifdef USE_REENTRANT_API
59bd0823 282 Perl_reentrant_init(aTHX);
e5dd39fc 283#endif
7dc86639
YO		 284#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
290 *
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
295 }
296#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB		 297
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
301 PL_strtab = newHV();
302
3d47000e
AB		 303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
305
a38ab475
RZ		 306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
307
2f42fcb0
JH		 308#ifndef PERL_MICRO
309# ifdef USE_ENVIRON_ARRAY
0631ea03 310 PL_origenviron = environ;
2f42fcb0 311# endif
0631ea03
AB		 312#endif
313
5311654c 314 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 315 * available or if the sysconf() fails, use the HZ.
27da23d5
JH		 316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
b6c36746 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH		 319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB		 324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 327
27da23d5
JH		 328#ifdef HAS_MMAP
329 if (!PL_mmap_page_size) {
330#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
331 {
332 SETERRNO(0, SS_NORMAL);
333# ifdef _SC_PAGESIZE
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
335# else
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
337# endif
338 if ((long) PL_mmap_page_size < 0) {
339 if (errno) {
44f8325f 340 SV * const error = ERRSV;
d4c19fe8 341 SvUPGRADE(error, SVt_PV);
0510663f 342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH		 343 }
344 else
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
346 }
347 }
348#else
349# ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
351# else
352# if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
354# endif
355# endif
356#endif
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
360 }
361#endif /* HAS_MMAP */
362
363#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
368#endif
369
7d113631
NC		 370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
371
a3e6e81e 372 PL_registered_mros = newHV();
9e169432
NC		 373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
a3e6e81e 375
7b8dd5f4
KW		 376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW		 388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 392 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW		 393 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
394 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
7b8dd5f4 395
8990e307 396 ENTER;
79072805
LW		 397}
398
954c1994 399/*
62375a60
NIS		 400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS		 412 return 0;
413}
414
41e4abd8
NC		 415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC		 420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC		 422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC		 426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC		 429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC		 432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC		 436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC		 441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC		 449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC		 459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC		 462 abort();
463 }
bf357333
NC		 464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC		 466 abort();
467 }
468
808ad2d0
NC		 469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC		 480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 489 abort();
490 }
491
808ad2d0
NC		 492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC		 511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS		 516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC		 530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC		 534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG		 539 assert(PL_scopestack_ix == 1);
540
7766f137
GS		 541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL		 547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH		 549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
22ff3130
HS		 553 UV uv;
554 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
555 i = (int)uv;
556 else
557 i = 0;
96e440d2 558 }
36e77d41
DD		 559#ifdef DEBUGGING
560 if (destruct_level < i) destruct_level = i;
561#endif
562#ifdef PERL_TRACK_MEMPOOL
f5199772
KW		 563 /* RT #114496, for perl_free */
564 PL_perl_destruct_level = i;
36e77d41 565#endif
5f05dabc 566 }
4633a7c4
LW		 567 }
568#endif
569
27da23d5 570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 571 dJMPENV;
572 int x = 0;
573
574 JMPENV_PUSH(x);
1b6737cc 575 PERL_UNUSED_VAR(x);
9ebf26ad 576 if (PL_endav && !PL_minus_c) {
ca7b837b 577 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 578 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 579 }
f3faeb53 580 JMPENV_POP;
26f423df 581 }
f3faeb53 582 LEAVE;
a0d0e21e 583 FREETMPS;
3d22c4f0 584 assert(PL_scopestack_ix == 0);
a0d0e21e 585
e00b64d4 586 /* Need to flush since END blocks can produce output */
f13a2bc0 587 my_fflush_all();
e00b64d4 588
75d476e2
S		 589#ifdef PERL_TRACE_OPS
590 /* If we traced all Perl OP usage, report and clean up */
591 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
592 for (i = 0; i <= OP_max; ++i) {
593 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
594 PL_op_exec_cnt[i] = 0;
595 }
596 /* Utility slot for easily doing little tracing experiments in the runloop: */
597 if (PL_op_exec_cnt[OP_max+1] != 0)
598 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
599 PerlIO_printf(Perl_debug_log, "\n");
600#endif
601
602
16c91539 603 if (PL_threadhook(aTHX)) {
62375a60 604 /* Threads hook has vetoed further cleanup */
c301d606 605 PL_veto_cleanup = TRUE;
37038d91 606 return STATUS_EXIT;
62375a60
NIS		 607 }
608
2aa47728
NC		 609#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
610 if (destruct_level != 0) {
611 /* Fork here to create a child. Our child's job is to preserve the
612 state of scalars prior to destruction, so that we can instruct it
613 to dump any scalars that we later find have leaked.
614 There's no subtlety in this code - it assumes POSIX, and it doesn't
615 fail gracefully */
616 int fd[2];
617
618 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
619 perror("Debug leaking scalars socketpair failed");
620 abort();
621 }
622
623 child = fork();
624 if(child == -1) {
625 perror("Debug leaking scalars fork failed");
626 abort();
627 }
628 if (!child) {
629 /* We are the child */
3125a5a4
NC		 630 const int sock = fd[1];
631 const int debug_fd = PerlIO_fileno(Perl_debug_log);
632 int f;
808ad2d0
NC		 633 const char *where;
634 /* Our success message is an integer 0, and a char 0 */
b61433a9 635 static const char success[sizeof(int) + 1] = {0};
3125a5a4 636
2aa47728 637 close(fd[0]);
2aa47728 638
3125a5a4
NC		 639 /* We need to close all other file descriptors otherwise we end up
640 with interesting hangs, where the parent closes its end of a
641 pipe, and sits waiting for (another) child to terminate. Only
642 that child never terminates, because it never gets EOF, because
bf357333
NC		 643 we also have the far end of the pipe open. We even need to
644 close the debugging fd, because sometimes it happens to be one
645 end of a pipe, and a process is waiting on the other end for
646 EOF. Normally it would be closed at some point earlier in
647 destruction, but if we happen to cause the pipe to remain open,
648 EOF never occurs, and we get an infinite hang. Hence all the
649 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC		 650
651 f = sysconf(_SC_OPEN_MAX);
652 if(f < 0) {
808ad2d0
NC		 653 where = "sysconf failed";
654 goto abort;
3125a5a4
NC		 655 }
656 while (f--) {
657 if (f == sock)
658 continue;
3125a5a4
NC		 659 close(f);
660 }
661
2aa47728
NC		 662 while (1) {
663 SV *target;
bf357333
NC		 664 union control_un control;
665 struct msghdr msg;
666 struct iovec vec[1];
667 struct cmsghdr *cmptr;
668 ssize_t got;
669 int got_fd;
670
671 msg.msg_control = control.control;
672 msg.msg_controllen = sizeof(control.control);
673 /* We're a connected socket so we don't need a source */
674 msg.msg_name = NULL;
675 msg.msg_namelen = 0;
676 msg.msg_iov = vec;
c3caa5c3 677 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC		 678
679 vec[0].iov_base = (void*)&target;
680 vec[0].iov_len = sizeof(target);
681
682 got = recvmsg(sock, &msg, 0);
2aa47728
NC		 683
684 if(got == 0)
685 break;
686 if(got < 0) {
808ad2d0
NC		 687 where = "recv failed";
688 goto abort;
2aa47728
NC		 689 }
690 if(got < sizeof(target)) {
808ad2d0
NC		 691 where = "short recv";
692 goto abort;
2aa47728 693 }
bf357333 694
808ad2d0
NC		 695 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
696 where = "no cmsg";
697 goto abort;
698 }
699 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
700 where = "wrong cmsg_len";
701 goto abort;
702 }
703 if(cmptr->cmsg_level != SOL_SOCKET) {
704 where = "wrong cmsg_level";
705 goto abort;
706 }
707 if(cmptr->cmsg_type != SCM_RIGHTS) {
708 where = "wrong cmsg_type";
709 goto abort;
710 }
bf357333
NC		 711
712 got_fd = *(int*)CMSG_DATA(cmptr);
713 /* For our last little bit of trickery, put the file descriptor
714 back into Perl_debug_log, as if we never actually closed it
715 */
808ad2d0
NC		 716 if(got_fd != debug_fd) {
717 if (dup2(got_fd, debug_fd) == -1) {
718 where = "dup2";
719 goto abort;
720 }
721 }
2aa47728 722 sv_dump(target);
bf357333 723
2aa47728
NC		 724 PerlIO_flush(Perl_debug_log);
725
808ad2d0 726 got = write(sock, &success, sizeof(success));
2aa47728
NC		 727
728 if(got < 0) {
808ad2d0
NC		 729 where = "write failed";
730 goto abort;
2aa47728 731 }
808ad2d0
NC		 732 if(got < sizeof(success)) {
733 where = "short write";
734 goto abort;
2aa47728
NC		 735 }
736 }
737 _exit(0);
808ad2d0
NC		 738 abort:
739 {
740 int send_errno = errno;
741 unsigned char length = (unsigned char) strlen(where);
742 struct iovec failure[3] = {
743 {(void*)&send_errno, sizeof(send_errno)},
744 {&length, 1},
745 {(void*)where, length}
746 };
747 int got = writev(sock, failure, 3);
748 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
749 in the parent if we try to read from the socketpair after the
750 child has exited, even if there was data to read.
751 So sleep a bit to give the parent a fighting chance of
752 reading the data. */
753 sleep(2);
754 _exit((got == -1) ? errno : 0);
755 }
bf357333 756 /* End of child. */
2aa47728 757 }
41e4abd8 758 PL_dumper_fd = fd[0];
2aa47728
NC		 759 close(fd[1]);
760 }
761#endif
762
ff0cee69 763 /* We must account for everything. */
764
765 /* Destroy the main CV and syntax tree */
37e77c23
FC		 766 /* Set PL_curcop now, because destroying ops can cause new SVs
767 to be generated in Perl_pad_swipe, and when running with
768 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
769 op from which the filename structure member is copied. */
17fbfdf6 770 PL_curcop = &PL_compiling;
3280af22 771 if (PL_main_root) {
4e380990
DM		 772 /* ensure comppad/curpad to refer to main's pad */
773 if (CvPADLIST(PL_main_cv)) {
774 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 775 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 776 }
3280af22 777 op_free(PL_main_root);
5f66b61c 778 PL_main_root = NULL;
a0d0e21e 779 }
5f66b61c 780 PL_main_start = NULL;
aac9d523
DM		 781 /* note that PL_main_cv isn't usually actually freed at this point,
782 * due to the CvOUTSIDE refs from subs compiled within it. It will
783 * get freed once all the subs are freed in sv_clean_all(), for
784 * destruct_level > 0 */
3280af22 785 SvREFCNT_dec(PL_main_cv);
601f1833 786 PL_main_cv = NULL;
ca7b837b 787 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 788
13621cfb
NIS		 789 /* Tell PerlIO we are about to tear things apart in case
790 we have layers which are using resources that should
791 be cleaned up now.
792 */
793
794 PerlIO_destruct(aTHX);
795
ddf23d4a
S		 796 /*
797 * Try to destruct global references. We do this first so that the
798 * destructors and destructees still exist. Some sv's might remain.
799 * Non-referenced objects are on their own.
800 */
801 sv_clean_objs();
8990e307 802
5cd24f17 803 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 804 SvREFCNT_dec(PL_warnhook);
a0714e2c 805 PL_warnhook = NULL;
3280af22 806 SvREFCNT_dec(PL_diehook);
a0714e2c 807 PL_diehook = NULL;
5cd24f17 808
4b556e6c 809 /* call exit list functions */
3280af22 810 while (PL_exitlistlen-- > 0)
acfe0abc 811 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 812
3280af22 813 Safefree(PL_exitlist);
4b556e6c 814
1c4916e5
CB		 815 PL_exitlist = NULL;
816 PL_exitlistlen = 0;
817
a3e6e81e
NC		 818 SvREFCNT_dec(PL_registered_mros);
819
551a8b83 820 /* jettison our possibly duplicated environment */
4b647fb0
DM		 821 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
822 * so we certainly shouldn't free it here
823 */
2f42fcb0 824#ifndef PERL_MICRO
4b647fb0 825#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 826 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS		 827#ifdef USE_ITHREADS
828 /* only main thread can free environ[0] contents */
829 && PL_curinterp == aTHX
830#endif
831 )
832 {
551a8b83
JH		 833 I32 i;
834
835 for (i = 0; environ[i]; i++)
4b420006 836 safesysfree(environ[i]);
0631ea03 837
4b420006
JH		 838 /* Must use safesysfree() when working with environ. */
839 safesysfree(environ);
551a8b83
JH		 840
841 environ = PL_origenviron;
842 }
843#endif
2f42fcb0 844#endif /* !PERL_MICRO */
551a8b83 845
30985c42
JH		 846 if (destruct_level == 0) {
847
848 DEBUG_P(debprofdump());
849
850#if defined(PERLIO_LAYERS)
851 /* No more IO - including error messages ! */
852 PerlIO_cleanup(aTHX);
853#endif
854
855 CopFILE_free(&PL_compiling);
30985c42
JH		 856
857 /* The exit() function will do everything that needs doing. */
858 return STATUS_EXIT;
859 }
860
9fa9f06b
KW		 861 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
862
5f8cb046
DM		 863#ifdef USE_ITHREADS
864 /* the syntax tree is shared between clones
865 * so op_free(PL_main_root) only ReREFCNT_dec's
866 * REGEXPs in the parent interpreter
867 * we need to manually ReREFCNT_dec for the clones
868 */
0547a729
DM		 869 {
870 I32 i = AvFILLp(PL_regex_padav);
871 SV **ary = AvARRAY(PL_regex_padav);
872
873 for (; i; i--) {
874 SvREFCNT_dec(ary[i]);
875 ary[i] = &PL_sv_undef;
876 }
877 }
5f8cb046
DM		 878#endif
879
0547a729 880
ad64d0ec 881 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB		 882 PL_stashcache = NULL;
883
5f05dabc 884 /* loosen bonds of global variables */
885
2f9285f8
DM		 886 /* XXX can PL_parser still be non-null here? */
887 if(PL_parser && PL_parser->rsfp) {
888 (void)PerlIO_close(PL_parser->rsfp);
889 PL_parser->rsfp = NULL;
8ebc5c01 890 }
891
84386e14
RGS		 892 if (PL_minus_F) {
893 Safefree(PL_splitstr);
894 PL_splitstr = NULL;
895 }
896
8ebc5c01 897 /* switches */
3280af22
NIS		 898 PL_minus_n = FALSE;
899 PL_minus_p = FALSE;
900 PL_minus_l = FALSE;
901 PL_minus_a = FALSE;
902 PL_minus_F = FALSE;
903 PL_doswitches = FALSE;
599cee73 904 PL_dowarn = G_WARN_OFF;
1a904fc8 905#ifdef PERL_SAWAMPERSAND
d3b97530 906 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 907#endif
3280af22
NIS		 908 PL_unsafe = FALSE;
909
910 Safefree(PL_inplace);
bd61b366 911 PL_inplace = NULL;
a7cb1f99 912 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 913
914 if (PL_e_script) {
915 SvREFCNT_dec(PL_e_script);
a0714e2c 916 PL_e_script = NULL;
8ebc5c01 917 }
918
bf9cdc68
RG		 919 PL_perldb = 0;
920
8ebc5c01 921 /* magical thingies */
922
e23d9e2f
CS		 923 SvREFCNT_dec(PL_ofsgv); /* *, */
924 PL_ofsgv = NULL;
5f05dabc 925
7889fe52 926 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 927 PL_ors_sv = NULL;
8ebc5c01 928
3280af22 929 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 930 PL_rs = NULL;
dc92893f 931
d33b2eba 932 Safefree(PL_osname); /* $^O */
bd61b366 933 PL_osname = NULL;
5f05dabc 934
3280af22 935 SvREFCNT_dec(PL_statname);
a0714e2c
SS		 936 PL_statname = NULL;
937 PL_statgv = NULL;
5f05dabc 938
8ebc5c01 939 /* defgv, aka *_ should be taken care of elsewhere */
940
7d5ea4e7
GS		 941 /* float buffer */
942 Safefree(PL_efloatbuf);
bd61b366 943 PL_efloatbuf = NULL;
7d5ea4e7
GS		 944 PL_efloatsize = 0;
945
8ebc5c01 946 /* startup and shutdown function lists */
3280af22 947 SvREFCNT_dec(PL_beginav);
5a837c8f 948 SvREFCNT_dec(PL_beginav_save);
3280af22 949 SvREFCNT_dec(PL_endav);
7d30b5c4 950 SvREFCNT_dec(PL_checkav);
ece599bd 951 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG		 952 SvREFCNT_dec(PL_unitcheckav);
953 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 954 SvREFCNT_dec(PL_initav);
7d49f689
NC		 955 PL_beginav = NULL;
956 PL_beginav_save = NULL;
957 PL_endav = NULL;
958 PL_checkav = NULL;
959 PL_checkav_save = NULL;
3c10abe3
AG		 960 PL_unitcheckav = NULL;
961 PL_unitcheckav_save = NULL;
7d49f689 962 PL_initav = NULL;
5618dfe8 963
8ebc5c01 964 /* shortcuts just get cleared */
a0714e2c
SS		 965 PL_hintgv = NULL;
966 PL_errgv = NULL;
a0714e2c
SS		 967 PL_argvoutgv = NULL;
968 PL_stdingv = NULL;
969 PL_stderrgv = NULL;
970 PL_last_in_gv = NULL;
a0714e2c
SS		 971 PL_DBsingle = NULL;
972 PL_DBtrace = NULL;
973 PL_DBsignal = NULL;
a6d69523
TC		 974 PL_DBsingle_iv = 0;
975 PL_DBtrace_iv = 0;
976 PL_DBsignal_iv = 0;
601f1833 977 PL_DBcv = NULL;
7d49f689 978 PL_dbargs = NULL;
5c284bb0 979 PL_debstash = NULL;
8ebc5c01 980
cf93a474 981 SvREFCNT_dec(PL_envgv);
f03015cd 982 SvREFCNT_dec(PL_incgv);
722fa0e9 983 SvREFCNT_dec(PL_argvgv);
475b1e90 984 SvREFCNT_dec(PL_replgv);
8cece913
FC		 985 SvREFCNT_dec(PL_DBgv);
986 SvREFCNT_dec(PL_DBline);
987 SvREFCNT_dec(PL_DBsub);
cf93a474 988 PL_envgv = NULL;
f03015cd 989 PL_incgv = NULL;
722fa0e9 990 PL_argvgv = NULL;
475b1e90 991 PL_replgv = NULL;
8cece913
FC		 992 PL_DBgv = NULL;
993 PL_DBline = NULL;
994 PL_DBsub = NULL;
995
7a1c5554 996 SvREFCNT_dec(PL_argvout_stack);
7d49f689 997 PL_argvout_stack = NULL;
8ebc5c01 998
5c831c24 999 SvREFCNT_dec(PL_modglobal);
5c284bb0 1000 PL_modglobal = NULL;
5c831c24 1001 SvREFCNT_dec(PL_preambleav);
7d49f689 1002 PL_preambleav = NULL;
5c831c24 1003 SvREFCNT_dec(PL_subname);
a0714e2c 1004 PL_subname = NULL;
ca0c25f6 1005#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1006 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1007 PL_pidstatus = NULL;
ca0c25f6 1008#endif
5c831c24 1009 SvREFCNT_dec(PL_toptarget);
a0714e2c 1010 PL_toptarget = NULL;
5c831c24 1011 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS		 1012 PL_bodytarget = NULL;
1013 PL_formtarget = NULL;
5c831c24 1014
d33b2eba 1015 /* free locale stuff */
b9582b6a 1016#ifdef USE_LOCALE_COLLATE
d33b2eba 1017 Safefree(PL_collation_name);
bd61b366 1018 PL_collation_name = NULL;
b9582b6a 1019#endif
d33b2eba 1020
b9582b6a 1021#ifdef USE_LOCALE_NUMERIC
d33b2eba 1022 Safefree(PL_numeric_name);
bd61b366 1023 PL_numeric_name = NULL;
a453c169 1024 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1025 PL_numeric_radix_sv = NULL;
b9582b6a 1026#endif
d33b2eba 1027
9c0b6888
KW		 1028 /* clear character classes */
1029 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1030 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1031 PL_utf8_swash_ptrs[i] = NULL;
1032 }
5c831c24
GS		 1033 SvREFCNT_dec(PL_utf8_mark);
1034 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1035 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1036 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1037 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 1038 SvREFCNT_dec(PL_utf8_idstart);
1039 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1040 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1041 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1042 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1043 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW		 1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1048#ifdef USE_LOCALE_CTYPE
780fcc9f 1049 SvREFCNT_dec(PL_warn_locale);
5b7de470 1050#endif
a0714e2c
SS		 1051 PL_utf8_mark = NULL;
1052 PL_utf8_toupper = NULL;
1053 PL_utf8_totitle = NULL;
1054 PL_utf8_tolower = NULL;
1055 PL_utf8_tofold = NULL;
1056 PL_utf8_idstart = NULL;
1057 PL_utf8_idcont = NULL;
2726813d 1058 PL_utf8_foldclosures = NULL;
9fa9f06b 1059 PL_AboveLatin1 = NULL;
e0a1ff7a 1060 PL_InBitmap = NULL;
9fa9f06b 1061 PL_HasMultiCharFold = NULL;
5b7de470 1062#ifdef USE_LOCALE_CTYPE
780fcc9f 1063 PL_warn_locale = NULL;
5b7de470 1064#endif
9fa9f06b
KW		 1065 PL_Latin1 = NULL;
1066 PL_NonL1NonFinalFold = NULL;
1067 PL_UpperLatin1 = NULL;
86f72d56 1068 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW		 1069 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1070 PL_XPosix_ptrs[i] = NULL;
86f72d56 1071 }
64935bc6 1072 PL_GCB_invlist = NULL;
06ae2722 1073 PL_SB_invlist = NULL;
ae3bb8ea 1074 PL_WB_invlist = NULL;
5c831c24 1075
971a9dd3 1076 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1077 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1078 PL_compiling.cop_warnings = NULL;
20439bc7
Z		 1079 cophh_free(CopHINTHASH_get(&PL_compiling));
1080 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1081 CopFILE_free(&PL_compiling);
5c831c24 1082
a0d0e21e 1083 /* Prepare to destruct main symbol table. */
5f05dabc 1084
3280af22 1085 hv = PL_defstash;
ca556bcd
DM		 1086 /* break ref loop *:: <=> %:: */
1087 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1088 PL_defstash = 0;
a0d0e21e 1089 SvREFCNT_dec(hv);
5c831c24 1090 SvREFCNT_dec(PL_curstname);
a0714e2c 1091 PL_curstname = NULL;
a0d0e21e 1092
5a844595
GS		 1093 /* clear queued errors */
1094 SvREFCNT_dec(PL_errors);
a0714e2c 1095 PL_errors = NULL;
5a844595 1096
dd69841b
BB		 1097 SvREFCNT_dec(PL_isarev);
1098
a0d0e21e 1099 FREETMPS;
9b387841 1100 if (destruct_level >= 2) {
3280af22 1101 if (PL_scopestack_ix != 0)
9b387841
NC		 1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1104 (long)PL_scopestack_ix);
3280af22 1105 if (PL_savestack_ix != 0)
9b387841
NC		 1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1107 "Unbalanced saves: %ld more saves than restores\n",
1108 (long)PL_savestack_ix);
3280af22 1109 if (PL_tmps_floor != -1)
9b387841
NC		 1110 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1111 (long)PL_tmps_floor + 1);
a0d0e21e 1112 if (cxstack_ix != -1)
9b387841
NC		 1113 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1114 (long)cxstack_ix + 1);
a0d0e21e 1115 }
8990e307 1116
0547a729
DM		 1117#ifdef USE_ITHREADS
1118 SvREFCNT_dec(PL_regex_padav);
1119 PL_regex_padav = NULL;
1120 PL_regex_pad = NULL;
1121#endif
1122
776df701 1123#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH		 1124 /* the entries in this list are allocated via SV PVX's, so get freed
1125 * in sv_clean_all */
1126 Safefree(PL_my_cxt_list);
776df701 1127#endif
57bb2458 1128
8990e307 1129 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH		 1130
1131 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1132 while (sv_clean_all() > 2)
5226ed68
JH		 1133 ;
1134
23083432
FC		 1135#ifdef USE_ITHREADS
1136 Safefree(PL_stashpad); /* must come after sv_clean_all */
1137#endif
1138
d4777f27
GS		 1139 AvREAL_off(PL_fdpid); /* no surviving entries */
1140 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1141 PL_fdpid = NULL;
d33b2eba 1142
6c644e78
GS		 1143#ifdef HAVE_INTERP_INTERN
1144 sys_intern_clear();
1145#endif
1146
a38ab475
RZ		 1147 /* constant strings */
1148 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1149 SvREFCNT_dec(PL_sv_consts[i]);
1150 PL_sv_consts[i] = NULL;
1151 }
1152
6e72f9df 1153 /* Destruct the global string table. */
1154 {
1155 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1156 * so that sv_free() won't fail on them.
80459961
NC		 1157 * Now that the global string table is using a single hunk of memory
1158 * for both HE and HEK, we either need to explicitly unshare it the
1159 * correct way, or actually free things here.
6e72f9df 1160 */
80459961
NC		 1161 I32 riter = 0;
1162 const I32 max = HvMAX(PL_strtab);
c4420975 1163 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC		 1164 HE *hent = array[0];
1165
6e72f9df 1166 for (;;) {
0453d815 1167 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1168 HE * const next = HeNEXT(hent);
9014280d 1169 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1170 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1171 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC		 1172 Safefree(hent);
1173 hent = next;
6e72f9df 1174 }
1175 if (!hent) {
1176 if (++riter > max)
1177 break;
1178 hent = array[riter];
1179 }
1180 }
80459961
NC		 1181
1182 Safefree(array);
1183 HvARRAY(PL_strtab) = 0;
1184 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1185 }
3280af22 1186 SvREFCNT_dec(PL_strtab);
6e72f9df 1187
e652bb2f 1188#ifdef USE_ITHREADS
c21d1a0f 1189 /* free the pointer tables used for cloning */
a0739874 1190 ptr_table_free(PL_ptr_table);
bf9cdc68 1191 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1192#endif
a0739874 1193
d33b2eba
GS		 1194 /* free special SVs */
1195
1196 SvREFCNT(&PL_sv_yes) = 0;
1197 sv_clear(&PL_sv_yes);
1198 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1199 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 1200
1201 SvREFCNT(&PL_sv_no) = 0;
1202 sv_clear(&PL_sv_no);
1203 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1204 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1205
9f375a43
DM		 1206 {
1207 int i;
1208 for (i=0; i<=2; i++) {
1209 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1210 sv_clear(PERL_DEBUG_PAD(i));
1211 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1212 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1213 }
1214 }
1215
0453d815 1216 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1217 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1218
eba0f806
DM		 1219#ifdef DEBUG_LEAKING_SCALARS
1220 if (PL_sv_count != 0) {
1221 SV* sva;
1222 SV* sv;
eb578fdb 1223 SV* svend;
eba0f806 1224
ad64d0ec 1225 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM		 1226 svend = &sva[SvREFCNT(sva)];
1227 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1228 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1229 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1230 " flags=0x%"UVxf
fd0854ff 1231 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM		 1232 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1233 "serial %"UVuf"\n",
574b8821
NC		 1234 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1235 pTHX__VALUE,
fd0854ff
DM		 1236 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1237 sv->sv_debug_line,
1238 sv->sv_debug_inpad ? "for" : "by",
1239 sv->sv_debug_optype ?
1240 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1241 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1242 sv->sv_debug_serial
fd0854ff 1243 );
2aa47728 1244#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1245 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1246#endif
eba0f806
DM		 1247 }
1248 }
1249 }
1250 }
2aa47728
NC		 1251#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1252 {
1253 int status;
1254 fd_set rset;
1255 /* Wait for up to 4 seconds for child to terminate.
1256 This seems to be the least effort way of timing out on reaping
1257 its exit status. */
1258 struct timeval waitfor = {4, 0};
41e4abd8 1259 int sock = PL_dumper_fd;
2aa47728
NC		 1260
1261 shutdown(sock, 1);
1262 FD_ZERO(&rset);
1263 FD_SET(sock, &rset);
1264 select(sock + 1, &rset, NULL, NULL, &waitfor);
1265 waitpid(child, &status, WNOHANG);
1266 close(sock);
1267 }
1268#endif
eba0f806 1269#endif
77abb4c6
NC		 1270#ifdef DEBUG_LEAKING_SCALARS_ABORT
1271 if (PL_sv_count)
1272 abort();
1273#endif
bf9cdc68 1274 PL_sv_count = 0;
eba0f806 1275
56a2bab7 1276#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 1277 /* No more IO - including error messages ! */
1278 PerlIO_cleanup(aTHX);
1279#endif
1280
9f4bd222 1281 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1282 as currently layers use it rather than NULL as a marker
9f4bd222
NIS		 1283 for no arg - and will try and SvREFCNT_dec it.
1284 */
1285 SvREFCNT(&PL_sv_undef) = 0;
1286 SvREADONLY_off(&PL_sv_undef);
1287
3280af22 1288 Safefree(PL_origfilename);
bd61b366 1289 PL_origfilename = NULL;
43c5f42d 1290 Safefree(PL_reg_curpm);
dd28f7bb 1291 free_tied_hv_pool();
3280af22 1292 Safefree(PL_op_mask);
cf36064f 1293 Safefree(PL_psig_name);
bf9cdc68 1294 PL_psig_name = (SV**)NULL;
d525a7b2 1295 PL_psig_ptr = (SV**)NULL;
31c91b43
LR		 1296 {
1297 /* We need to NULL PL_psig_pend first, so that
1298 signal handlers know not to use it */
1299 int *psig_save = PL_psig_pend;
1300 PL_psig_pend = (int*)NULL;
1301 Safefree(psig_save);
1302 }
6e72f9df 1303 nuke_stacks();
284167a5
S		 1304 TAINTING_set(FALSE);
1305 TAINT_WARN_set(FALSE);
3280af22 1306 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1307
a0d0e21e 1308 DEBUG_P(debprofdump());
d33b2eba 1309
b173165c
FC		 1310 PL_debug = 0;
1311
e5dd39fc 1312#ifdef USE_REENTRANT_API
10bc17b6 1313 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 1314#endif
1315
a24da70b
NC		 1316 /* These all point to HVs that are about to be blown away.
1317 Code in core and on CPAN assumes that if the interpreter is re-started
1318 that they will be cleanly NULL or pointing to a valid HV. */
1319 PL_custom_op_names = NULL;
1320 PL_custom_op_descs = NULL;
1321 PL_custom_ops = NULL;
1322
612f20c3
GS		 1323 sv_free_arenas();
1324
5d9a96ca
DM		 1325 while (PL_regmatch_slab) {
1326 regmatch_slab *s = PL_regmatch_slab;
1327 PL_regmatch_slab = PL_regmatch_slab->next;
1328 Safefree(s);
1329 }
1330
fc36a67e 1331 /* As the absolutely last thing, free the non-arena SV for mess() */
1332
3280af22 1333 if (PL_mess_sv) {
f350b448
NC		 1334 /* we know that type == SVt_PVMG */
1335
9c63abab 1336 /* it could have accumulated taint magic */
f350b448
NC		 1337 MAGIC* mg;
1338 MAGIC* moremagic;
1339 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1340 moremagic = mg->mg_moremagic;
1341 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1342 && mg->mg_len >= 0)
1343 Safefree(mg->mg_ptr);
1344 Safefree(mg);
9c63abab 1345 }
f350b448 1346
fc36a67e 1347 /* we know that type >= SVt_PV */
8bd4d4c5 1348 SvPV_free(PL_mess_sv);
3280af22
NIS		 1349 Safefree(SvANY(PL_mess_sv));
1350 Safefree(PL_mess_sv);
a0714e2c 1351 PL_mess_sv = NULL;
fc36a67e 1352 }
37038d91 1353 return STATUS_EXIT;
79072805
LW		 1354}
1355
954c1994
GS		 1356/*
1357=for apidoc perl_free
1358
1359Releases a Perl interpreter. See L<perlembed>.
1360
1361=cut
1362*/
1363
79072805 1364void
0cb96387 1365perl_free(pTHXx)
79072805 1366{
5174512c
NC		 1367 dVAR;
1368
7918f24d
NC		 1369 PERL_ARGS_ASSERT_PERL_FREE;
1370
c301d606
DM		 1371 if (PL_veto_cleanup)
1372 return;
1373
7cb608b5 1374#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM		 1375 {
1376 /*
1377 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1378 * value as we're probably hunting memory leaks then
1379 */
36e77d41 1380 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1381 const U32 old_debug = PL_debug;
55ef9aae
MHM		 1382 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1383 thread at thread exit. */
4fd0a9b8
NC		 1384 if (DEBUG_m_TEST) {
1385 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1386 "free this thread's memory\n");
1387 PL_debug &= ~ DEBUG_m_FLAG;
1388 }
6edcbed6
DD		 1389 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1390 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1391 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1392 safesysfree(ptr);
1393 }
4fd0a9b8 1394 PL_debug = old_debug;
55ef9aae
MHM		 1395 }
1396 }
7cb608b5
NC		 1397#endif
1398
acfe0abc 1399#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1400# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1401 {
acfe0abc 1402# ifdef NETWARE
7af12a34 1403 void *host = nw_internal_host;
7af12a34 1404 PerlMem_free(aTHXx);
7af12a34 1405 nw_delete_internal_host(host);
acfe0abc 1406# else
bdb50480
NC		 1407 void *host = w32_internal_host;
1408 PerlMem_free(aTHXx);
7af12a34 1409 win32_delete_internal_host(host);
acfe0abc 1410# endif
7af12a34 1411 }
1c0ca838
GS		 1412# else
1413 PerlMem_free(aTHXx);
1414# endif
acfe0abc
GS		 1415#else
1416 PerlMem_free(aTHXx);
76e3520e 1417#endif
79072805
LW		 1418}
1419
b7f7fff6 1420#if defined(USE_ITHREADS)
aebd1ac7
GA		 1421/* provide destructors to clean up the thread key when libperl is unloaded */
1422#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1423
826955bd 1424#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1425#pragma fini "perl_fini"
666ad1ec
GA		 1426#elif defined(__sun) && !defined(__GNUC__)
1427#pragma fini (perl_fini)
aebd1ac7
GA		 1428#endif
1429
0dbb1585
AL		 1430static void
1431#if defined(__GNUC__)
1432__attribute__((destructor))
aebd1ac7 1433#endif
de009b76 1434perl_fini(void)
aebd1ac7 1435{
27da23d5 1436 dVAR;
5c64bffd
NC		 1437 if (
1438#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1439 my_vars &&
1440#endif
1441 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA		 1442 FREE_THREAD_KEY;
1443}
1444
1445#endif /* WIN32 */
1446#endif /* THREADS */
1447
4b556e6c 1448void
864dbfa3 1449Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1450{
3280af22
NIS		 1451 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1452 PL_exitlist[PL_exitlistlen].fn = fn;
1453 PL_exitlist[PL_exitlistlen].ptr = ptr;
1454 ++PL_exitlistlen;
4b556e6c
JD		 1455}
1456
954c1994
GS		 1457/*
1458=for apidoc perl_parse
1459
1460Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1461
1462=cut
1463*/
1464
03d9f026
FC		 1465#define SET_CURSTASH(newstash) \
1466 if (PL_curstash != newstash) { \
1467 SvREFCNT_dec(PL_curstash); \
1468 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1469 }
1470
79072805 1471int
0cb96387 1472perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1473{
27da23d5 1474 dVAR;
6224f72b 1475 I32 oldscope;
6224f72b 1476 int ret;
db36c5a1 1477 dJMPENV;
8d063cd8 1478
7918f24d
NC		 1479 PERL_ARGS_ASSERT_PERL_PARSE;
1480#ifndef MULTIPLICITY
ed6c66dd 1481 PERL_UNUSED_ARG(my_perl);
7918f24d 1482#endif
7dc86639 1483#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1484 {
7dc86639
YO		 1485 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1486
22ff3130 1487 if (s && strEQ(s, "1")) {
25c1b134
TC		 1488 const unsigned char *seed= PERL_HASH_SEED;
1489 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO		 1490 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1491 while (seed < seed_end) {
1492 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1493 }
6a5b4183
YO		 1494#ifdef PERL_HASH_RANDOMIZE_KEYS
1495 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1496 PL_HASH_RAND_BITS_ENABLED,
1497 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1498#endif
7dc86639
YO		 1499 PerlIO_printf(Perl_debug_log, "\n");
1500 }
b0891165
JH		 1501 }
1502#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
43238333 1503
ea34f6bd 1504#ifdef __amigaos4__
43238333
AB		 1505 {
1506 struct NameTranslationInfo nti;
1507 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1508 }
1509#endif
1510
3280af22 1511 PL_origargc = argc;
e2975953 1512 PL_origargv = argv;
a0d0e21e 1513
a2722ac9
GA		 1514 if (PL_origalen != 0) {
1515 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1516 }
1517 else {
3cb9023d
JH		 1518 /* Set PL_origalen be the sum of the contiguous argv[]
1519 * elements plus the size of the env in case that it is
e9137a8e 1520 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1521 * as the maximum modifiable length of $0. In the worst case
1522 * the area we are able to modify is limited to the size of
43c32782 1523 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1524 * --jhi */
e1ec3a88 1525 const char *s = NULL;
54bfe034 1526 int i;
b7249aaf 1527 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1528 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1529 const UV aligned =
43c32782
JH		 1530 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1531
1532 /* See if all the arguments are contiguous in memory. Note
1533 * that 'contiguous' is a loose term because some platforms
1534 * align the argv[] and the envp[]. If the arguments look
1535 * like non-aligned, assume that they are 'strictly' or
1536 * 'traditionally' contiguous. If the arguments look like
1537 * aligned, we just check that they are within aligned
1538 * PTRSIZE bytes. As long as no system has something bizarre
1539 * like the argv[] interleaved with some other data, we are
1540 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH		 1541 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1542 while (*s) s++;
1543 for (i = 1; i < PL_origargc; i++) {
1544 if ((PL_origargv[i] == s + 1
43c32782 1545#ifdef OS2
c8941eeb 1546 || PL_origargv[i] == s + 2
43c32782 1547#endif
c8941eeb
JH		 1548 )
1549 ||
1550 (aligned &&
1551 (PL_origargv[i] > s &&
1552 PL_origargv[i] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 )
1555 {
1556 s = PL_origargv[i];
1557 while (*s) s++;
1558 }
1559 else
1560 break;
54bfe034 1561 }
54bfe034 1562 }
a4a109c2
JD		 1563
1564#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1565 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1566 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1567 if ((PL_origenviron[0] == s + 1)
43c32782
JH		 1568 ||
1569 (aligned &&
1570 (PL_origenviron[0] > s &&
1571 PL_origenviron[0] <=
1572 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1573 )
1574 {
9d419b5f 1575#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH		 1576 s = PL_origenviron[0];
1577 while (*s) s++;
1578#endif
bd61b366 1579 my_setenv("NoNe SuCh", NULL);
43c32782
JH		 1580 /* Force copy of environment. */
1581 for (i = 1; PL_origenviron[i]; i++) {
1582 if (PL_origenviron[i] == s + 1
1583 ||
1584 (aligned &&
1585 (PL_origenviron[i] > s &&
1586 PL_origenviron[i] <=
1587 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1588 )
1589 {
1590 s = PL_origenviron[i];
1591 while (*s) s++;
1592 }
1593 else
1594 break;
54bfe034 1595 }
43c32782 1596 }
54bfe034 1597 }
a4a109c2
JD		 1598#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1599
2d2af554 1600 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH		 1601 }
1602
3280af22 1603 if (PL_do_undump) {
a0d0e21e
LW		 1604
1605 /* Come here if running an undumped a.out. */
1606
3280af22
NIS		 1607 PL_origfilename = savepv(argv[0]);
1608 PL_do_undump = FALSE;
a0d0e21e 1609 cxstack_ix = -1; /* start label stack again */
748a9306 1610 init_ids();
284167a5 1611 assert (!TAINT_get);
b7975bdd 1612 TAINT;
e2051532 1613 set_caret_X();
b7975bdd 1614 TAINT_NOT;
a0d0e21e
LW		 1615 init_postdump_symbols(argc,argv,env);
1616 return 0;
1617 }
1618
3280af22 1619 if (PL_main_root) {
3280af22 1620 op_free(PL_main_root);
5f66b61c 1621 PL_main_root = NULL;
ff0cee69 1622 }
5f66b61c 1623 PL_main_start = NULL;
3280af22 1624 SvREFCNT_dec(PL_main_cv);
601f1833 1625 PL_main_cv = NULL;
79072805 1626
3280af22
NIS		 1627 time(&PL_basetime);
1628 oldscope = PL_scopestack_ix;
599cee73 1629 PL_dowarn = G_WARN_OFF;
f86702cc 1630
14dd3ad8 1631 JMPENV_PUSH(ret);
6224f72b 1632 switch (ret) {
312caa8e 1633 case 0:
14dd3ad8 1634 parse_body(env,xsinit);
9ebf26ad 1635 if (PL_unitcheckav) {
3c10abe3 1636 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1637 }
1638 if (PL_checkav) {
ca7b837b 1639 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1640 call_list(oldscope, PL_checkav);
9ebf26ad 1641 }
14dd3ad8
GS		 1642 ret = 0;
1643 break;
6224f72b
GS		 1644 case 1:
1645 STATUS_ALL_FAILURE;
924ba076 1646 /* FALLTHROUGH */
6224f72b
GS		 1647 case 2:
1648 /* my_exit() was called */
3280af22 1649 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1650 LEAVE;
1651 FREETMPS;
03d9f026 1652 SET_CURSTASH(PL_defstash);
9ebf26ad 1653 if (PL_unitcheckav) {
3c10abe3 1654 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1655 }
1656 if (PL_checkav) {
ca7b837b 1657 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1658 call_list(oldscope, PL_checkav);
9ebf26ad 1659 }
37038d91 1660 ret = STATUS_EXIT;
14dd3ad8 1661 break;
6224f72b 1662 case 3:
bf49b057 1663 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1664 ret = 1;
1665 break;
6224f72b 1666 }
14dd3ad8
GS		 1667 JMPENV_POP;
1668 return ret;
1669}
1670
4a5df386
NC		 1671/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1672 miniperl, and we need to see those flags reflected in the values here. */
1673
1674/* What this returns is subject to change. Use the public interface in Config.
1675 */
1676static void
1677S_Internals_V(pTHX_ CV *cv)
1678{
1679 dXSARGS;
1680#ifdef LOCAL_PATCH_COUNT
1681 const int local_patch_count = LOCAL_PATCH_COUNT;
1682#else
1683 const int local_patch_count = 0;
1684#endif
2dc296d2 1685 const int entries = 3 + local_patch_count;
4a5df386 1686 int i;
fe1c5936 1687 static const char non_bincompat_options[] =
4a5df386
NC		 1688# ifdef DEBUGGING
1689 " DEBUGGING"
1690# endif
1691# ifdef NO_MATHOMS
0d311fbe 1692 " NO_MATHOMS"
4a5df386 1693# endif
59b86f4b
DM		 1694# ifdef NO_HASH_SEED
1695 " NO_HASH_SEED"
1696# endif
3b0e4ee2
MB		 1697# ifdef NO_TAINT_SUPPORT
1698 " NO_TAINT_SUPPORT"
1699# endif
cb26ef7a
MB		 1700# ifdef PERL_BOOL_AS_CHAR
1701 " PERL_BOOL_AS_CHAR"
1702# endif
93c10d60
FC		 1703# ifdef PERL_COPY_ON_WRITE
1704 " PERL_COPY_ON_WRITE"
1705# endif
4a5df386
NC		 1706# ifdef PERL_DISABLE_PMC
1707 " PERL_DISABLE_PMC"
1708# endif
1709# ifdef PERL_DONT_CREATE_GVSV
1710 " PERL_DONT_CREATE_GVSV"
1711# endif
9a044a43
NC		 1712# ifdef PERL_EXTERNAL_GLOB
1713 " PERL_EXTERNAL_GLOB"
1714# endif
59b86f4b
DM		 1715# ifdef PERL_HASH_FUNC_SIPHASH
1716 " PERL_HASH_FUNC_SIPHASH"
1717# endif
1718# ifdef PERL_HASH_FUNC_SDBM
1719 " PERL_HASH_FUNC_SDBM"
1720# endif
1721# ifdef PERL_HASH_FUNC_DJB2
1722 " PERL_HASH_FUNC_DJB2"
1723# endif
1724# ifdef PERL_HASH_FUNC_SUPERFAST
1725 " PERL_HASH_FUNC_SUPERFAST"
1726# endif
1727# ifdef PERL_HASH_FUNC_MURMUR3
1728 " PERL_HASH_FUNC_MURMUR3"
1729# endif
1730# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1731 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1732# endif
1733# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1734 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1735# endif
1736# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1737 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1738# endif
4a5df386
NC		 1739# ifdef PERL_IS_MINIPERL
1740 " PERL_IS_MINIPERL"
1741# endif
1742# ifdef PERL_MALLOC_WRAP
1743 " PERL_MALLOC_WRAP"
1744# endif
1745# ifdef PERL_MEM_LOG
1746 " PERL_MEM_LOG"
1747# endif
1748# ifdef PERL_MEM_LOG_NOIMPL
1749 " PERL_MEM_LOG_NOIMPL"
1750# endif
59b86f4b
DM		 1751# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1752 " PERL_PERTURB_KEYS_DETERMINISTIC"
1753# endif
1754# ifdef PERL_PERTURB_KEYS_DISABLED
1755 " PERL_PERTURB_KEYS_DISABLED"
1756# endif
1757# ifdef PERL_PERTURB_KEYS_RANDOM
1758 " PERL_PERTURB_KEYS_RANDOM"
1759# endif
c3cf41ec
NC		 1760# ifdef PERL_PRESERVE_IVUV
1761 " PERL_PRESERVE_IVUV"
1762# endif
c051e30b
NC		 1763# ifdef PERL_RELOCATABLE_INCPUSH
1764 " PERL_RELOCATABLE_INCPUSH"
1765# endif
4a5df386
NC		 1766# ifdef PERL_USE_DEVEL
1767 " PERL_USE_DEVEL"
1768# endif
1769# ifdef PERL_USE_SAFE_PUTENV
1770 " PERL_USE_SAFE_PUTENV"
1771# endif
a3749cf3
NC		 1772# ifdef UNLINK_ALL_VERSIONS
1773 " UNLINK_ALL_VERSIONS"
1774# endif
de618ee4
NC		 1775# ifdef USE_ATTRIBUTES_FOR_PERLIO
1776 " USE_ATTRIBUTES_FOR_PERLIO"
1777# endif
4a5df386
NC		 1778# ifdef USE_FAST_STDIO
1779 " USE_FAST_STDIO"
1780# endif
59b86f4b
DM		 1781# ifdef USE_HASH_SEED_EXPLICIT
1782 " USE_HASH_SEED_EXPLICIT"
1783# endif
98548bdf
NC		 1784# ifdef USE_LOCALE
1785 " USE_LOCALE"
1786# endif
98548bdf
NC		 1787# ifdef USE_LOCALE_CTYPE
1788 " USE_LOCALE_CTYPE"
1789# endif
6937817d
DD		 1790# ifdef WIN32_NO_REGISTRY
1791 " USE_NO_REGISTRY"
1792# endif
5a8d8935
NC		 1793# ifdef USE_PERL_ATOF
1794 " USE_PERL_ATOF"
1795# endif
0d311fbe
NC		 1796# ifdef USE_SITECUSTOMIZE
1797 " USE_SITECUSTOMIZE"
1798# endif
4a5df386
NC		 1799 ;
1800 PERL_UNUSED_ARG(cv);
d3db1514 1801 PERL_UNUSED_VAR(items);
4a5df386
NC		 1802
1803 EXTEND(SP, entries);
1804
1805 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1806 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1807 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1808
1809#ifdef __DATE__
1810# ifdef __TIME__
1811 PUSHs(Perl_newSVpvn_flags(aTHX_
1812 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1813 SVs_TEMP));
1814# else
1815 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1816 SVs_TEMP));
1817# endif
1818#else
1819 PUSHs(&PL_sv_undef);
1820#endif
1821
4a5df386
NC		 1822 for (i = 1; i <= local_patch_count; i++) {
1823 /* This will be an undef, if PL_localpatches[i] is NULL. */
1824 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1825 }
1826
1827 XSRETURN(entries);
1828}
1829
be71fc8f
NC		 1830#define INCPUSH_UNSHIFT 0x01
1831#define INCPUSH_ADD_OLD_VERS 0x02
1832#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1833#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1834#define INCPUSH_NOT_BASEDIR 0x10
1835#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC		 1836#define INCPUSH_ADD_SUB_DIRS \
1837 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1838
312caa8e 1839STATIC void *
14dd3ad8 1840S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1841{
27da23d5 1842 dVAR;
2f9285f8 1843 PerlIO *rsfp;
312caa8e 1844 int argc = PL_origargc;
8f42b153 1845 char **argv = PL_origargv;
e1ec3a88 1846 const char *scriptname = NULL;
402582ca 1847 bool dosearch = FALSE;
eb578fdb 1848 char c;
737c24fc 1849 bool doextract = FALSE;
bd61b366 1850 const char *cddir = NULL;
ab019eaa 1851#ifdef USE_SITECUSTOMIZE
20ef40cf 1852 bool minus_f = FALSE;
ab019eaa 1853#endif
95670bde 1854 SV *linestr_sv = NULL;
5486870f 1855 bool add_read_e_script = FALSE;
87606032 1856 U32 lex_start_flags = 0;
009d90df 1857
ca7b837b 1858 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1859
6224f72b 1860 init_main_stash();
54310121 1861
c7030b81
NC		 1862 {
1863 const char *s;
6224f72b
GS		 1864 for (argc--,argv++; argc > 0; argc--,argv++) {
1865 if (argv[0][0] != '-' || !argv[0][1])
1866 break;
6224f72b
GS		 1867 s = argv[0]+1;
1868 reswitch:
47f56822 1869 switch ((c = *s)) {
729a02f2 1870 case 'C':
1d5472a9
GS		 1871#ifndef PERL_STRICT_CR
1872 case '\r':
1873#endif
6224f72b
GS		 1874 case ' ':
1875 case '0':
1876 case 'F':
1877 case 'a':
1878 case 'c':
1879 case 'd':
1880 case 'D':
1881 case 'h':
1882 case 'i':
1883 case 'l':
1884 case 'M':
1885 case 'm':
1886 case 'n':
1887 case 'p':
1888 case 's':
1889 case 'u':
1890 case 'U':
1891 case 'v':
599cee73
PM		 1892 case 'W':
1893 case 'X':
6224f72b 1894 case 'w':
97bd5664 1895 if ((s = moreswitches(s)))
6224f72b
GS		 1896 goto reswitch;
1897 break;
33b78306 1898
1dbad523 1899 case 't':
dc6d7f5c 1900#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1901 /* silently ignore */
dc6d7f5c 1902#elif defined(NO_TAINT_SUPPORT)
3231f579 1903 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 1904 "Cowardly refusing to run with -t or -T flags");
1905#else
22f7c9c9 1906 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
S		 1907 if( !TAINTING_get ) {
1908 TAINT_WARN_set(TRUE);
1909 TAINTING_set(TRUE);
317ea90d 1910 }
284167a5 1911#endif
317ea90d
MS		 1912 s++;
1913 goto reswitch;
6224f72b 1914 case 'T':
dc6d7f5c 1915#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1916 /* silently ignore */
dc6d7f5c 1917#elif defined(NO_TAINT_SUPPORT)
3231f579 1918 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 1919 "Cowardly refusing to run with -t or -T flags");
1920#else
22f7c9c9 1921 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
S		 1922 TAINTING_set(TRUE);
1923 TAINT_WARN_set(FALSE);
1924#endif
6224f72b
GS		 1925 s++;
1926 goto reswitch;
f86702cc 1927
bc9b29db
RH		 1928 case 'E':
1929 PL_minus_E = TRUE;
924ba076 1930 /* FALLTHROUGH */
6224f72b 1931 case 'e':
f20b2998 1932 forbid_setid('e', FALSE);
3280af22 1933 if (!PL_e_script) {
396482e1 1934 PL_e_script = newSVpvs("");
5486870f 1935 add_read_e_script = TRUE;
6224f72b
GS		 1936 }
1937 if (*++s)
3280af22 1938 sv_catpv(PL_e_script, s);
6224f72b 1939 else if (argv[1]) {
3280af22 1940 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1941 argc--,argv++;
1942 }
1943 else
47f56822 1944 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1945 sv_catpvs(PL_e_script, "\n");
6224f72b 1946 break;
afe37c7d 1947
20ef40cf 1948 case 'f':
f5542d3a 1949#ifdef USE_SITECUSTOMIZE
20ef40cf 1950 minus_f = TRUE;
f5542d3a 1951#endif
20ef40cf
GA		 1952 s++;
1953 goto reswitch;
1954
6224f72b 1955 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1956 forbid_setid('I', FALSE);
bd61b366 1957 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS		 1958 argc--,argv++;
1959 }
6224f72b 1960 if (s && *s) {
0df16ed7 1961 STRLEN len = strlen(s);
55b4bc1c 1962 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS		 1963 }
1964 else
a67e862a 1965 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1966 break;
6224f72b 1967 case 'S':
f20b2998 1968 forbid_setid('S', FALSE);
6224f72b
GS		 1969 dosearch = TRUE;
1970 s++;
1971 goto reswitch;
1972 case 'V':
7edfd0ef
NC		 1973 {
1974 SV *opts_prog;
1975
7edfd0ef 1976 if (*++s != ':') {
37ca4a5b 1977 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC		 1978 }
1979 else {
1980 ++s;
1981 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1982 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC		 1983 0, s, 0);
1984 s += strlen(s);
1985 }
37ca4a5b 1986 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC		 1987 /* don't look for script or read stdin */
1988 scriptname = BIT_BUCKET;
1989 goto reswitch;
6224f72b 1990 }
6224f72b 1991 case 'x':
737c24fc 1992 doextract = TRUE;
6224f72b 1993 s++;
304334da 1994 if (*s)
f4c556ac 1995 cddir = s;
6224f72b
GS		 1996 break;
1997 case 0:
1998 break;
1999 case '-':
2000 if (!*++s || isSPACE(*s)) {
2001 argc--,argv++;
2002 goto switch_end;
2003 }
ee8bc8b7
NC		 2004 /* catch use of gnu style long options.
2005 Both of these exit immediately. */
2006 if (strEQ(s, "version"))
2007 minus_v();
2008 if (strEQ(s, "help"))
2009 usage();
6224f72b 2010 s--;
924ba076 2011 /* FALLTHROUGH */
6224f72b 2012 default:
cea2e8a9 2013 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 2014 }
2015 }
c7030b81
NC		 2016 }
2017
6224f72b 2018 switch_end:
54310121 2019
c7030b81
NC		 2020 {
2021 char *s;
2022
f675dbe5
CB		 2023 if (
2024#ifndef SECURE_INTERNAL_GETENV
284167a5 2025 !TAINTING_get &&
f675dbe5 2026#endif
cf756827 2027 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2028 {
9e0b0d62
KW		 2029 /* s points to static memory in getenv(), which may be overwritten at
2030 * any time; use a mortal copy instead */
2031 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2032
74288ac8
GS		 2033 while (isSPACE(*s))
2034 s++;
317ea90d 2035 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2036#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2037 /* silently ignore */
dc6d7f5c 2038#elif defined(NO_TAINT_SUPPORT)
3231f579 2039 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 2040 "Cowardly refusing to run with -t or -T flags");
2041#else
22f7c9c9 2042 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
S		 2043 TAINTING_set(TRUE);
2044 TAINT_WARN_set(FALSE);
2045#endif
317ea90d 2046 }
74288ac8 2047 else {
bd61b366 2048 char *popt_copy = NULL;
74288ac8 2049 while (s && *s) {
54913509 2050 const char *d;
74288ac8
GS		 2051 while (isSPACE(*s))
2052 s++;
2053 if (*s == '-') {
2054 s++;
2055 if (isSPACE(*s))
2056 continue;
2057 }
4ea8f8fb 2058 d = s;
74288ac8
GS		 2059 if (!*s)
2060 break;
2b622f1a 2061 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2062 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 2063 while (++s && *s) {
2064 if (isSPACE(*s)) {
cf756827 2065 if (!popt_copy) {
bfa6c418
NC		 2066 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2067 s = popt_copy + (s - d);
2068 d = popt_copy;
cf756827 2069 }
4ea8f8fb
MS		 2070 *s++ = '\0';
2071 break;
2072 }
2073 }
1c4db469 2074 if (*d == 't') {
dc6d7f5c 2075#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2076 /* silently ignore */
dc6d7f5c 2077#elif defined(NO_TAINT_SUPPORT)
3231f579 2078 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 2079 "Cowardly refusing to run with -t or -T flags");
2080#else
2081 if( !TAINTING_get) {
2082 TAINT_WARN_set(TRUE);
2083 TAINTING_set(TRUE);
317ea90d 2084 }
284167a5 2085#endif
1c4db469 2086 } else {
97bd5664 2087 moreswitches(d);
1c4db469 2088 }
6224f72b 2089 }
6224f72b
GS		 2090 }
2091 }
c7030b81 2092 }
a0d0e21e 2093
c29067d7
CH		 2094 /* Set $^X early so that it can be used for relocatable paths in @INC */
2095 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2096 assert (!TAINT_get);
c29067d7 2097 TAINT;
e2051532 2098 set_caret_X();
c29067d7
CH		 2099 TAINT_NOT;
2100
43c0c913 2101#if defined(USE_SITECUSTOMIZE)
20ef40cf 2102 if (!minus_f) {
43c0c913 2103 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC		 2104 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2105 ie a q() operator with a NUL byte as a the delimiter. This avoids
2106 problems with pathnames containing (say) ' */
43c0c913
NC		 2107# ifdef PERL_IS_MINIPERL
2108 AV *const inc = GvAV(PL_incgv);
2109 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2110
2111 if (inc0) {
15870c5c
NC		 2112 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2113 it should be reported immediately as a build failure. */
43c0c913
NC		 2114 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2115 Perl_newSVpvf(aTHX_
5de87db5 2116 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC		 2117 "do {local $!; -f $f }"
2118 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2119 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC		 2120 }
2121# else
2122 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2123 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD		 2124 if (raw_sitelib) {
2125 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2126 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2127 INCPUSH_CAN_RELOCATE);
2128 const char *const sitelib = SvPVX(sitelib_sv);
2129 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2130 Perl_newSVpvf(aTHX_
2131 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF		 2132 0, SVfARG(sitelib), 0,
2133 0, SVfARG(sitelib), 0));
bac5c4fc
JD		 2134 assert (SvREFCNT(sitelib_sv) == 1);
2135 SvREFCNT_dec(sitelib_sv);
2136 }
43c0c913 2137# endif
20ef40cf
GA		 2138 }
2139#endif
2140
6224f72b
GS		 2141 if (!scriptname)
2142 scriptname = argv[0];
3280af22 2143 if (PL_e_script) {
6224f72b
GS		 2144 argc++,argv--;
2145 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2146 }
bd61b366 2147 else if (scriptname == NULL) {
6224f72b
GS		 2148#ifdef MSDOS
2149 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2150 moreswitches("h");
6224f72b
GS		 2151#endif
2152 scriptname = "-";
2153 }
2154
284167a5 2155 assert (!TAINT_get);
2cace6ac 2156 init_perllib();
6224f72b 2157
a52eba0e 2158 {
f20b2998 2159 bool suidscript = FALSE;
829372d3 2160
8d113837 2161 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC		 2162 if (!rsfp) {
2163 rsfp = PerlIO_stdin();
87606032 2164 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2165 }
6224f72b 2166
b24bc095 2167 validate_suid(rsfp);
6224f72b 2168
64ca3a65 2169#ifndef PERL_MICRO
a52eba0e
NC		 2170# if defined(SIGCHLD) || defined(SIGCLD)
2171 {
2172# ifndef SIGCHLD
2173# define SIGCHLD SIGCLD
2174# endif
2175 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2176 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC		 2177 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2178 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC		 2179 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2180 }
0b5b802d 2181 }
a52eba0e 2182# endif
64ca3a65 2183#endif
0b5b802d 2184
737c24fc 2185 if (doextract) {
faef540c 2186
f20b2998 2187 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC		 2188 setuid scripts. */
2189 forbid_setid('x', suidscript);
f20b2998 2190 /* Hence you can't get here if suidscript is true */
faef540c 2191
95670bde
NC		 2192 linestr_sv = newSV_type(SVt_PV);
2193 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2194 find_beginning(linestr_sv, rsfp);
a52eba0e
NC		 2195 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2196 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2197 }
f4c556ac 2198 }
6224f72b 2199
ea726b52 2200 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS		 2201 CvUNIQUE_on(PL_compcv);
2202
eacbb379 2203 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2204
dd69841b
BB		 2205 PL_isarev = newHV();
2206
0c4f7ff0 2207 boot_core_PerlIO();
6224f72b 2208 boot_core_UNIVERSAL();
e1a479c5 2209 boot_core_mro();
4a5df386 2210 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS		 2211
2212 if (xsinit)
acfe0abc 2213 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2214#ifndef PERL_MICRO
739a0b84 2215#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2216 init_os_extras();
6224f72b 2217#endif
64ca3a65 2218#endif
6224f72b 2219
29209bc5 2220#ifdef USE_SOCKS
1b9c9cf5
DH		 2221# ifdef HAS_SOCKS5_INIT
2222 socks5_init(argv[0]);
2223# else
29209bc5 2224 SOCKSinit(argv[0]);
1b9c9cf5 2225# endif
ac27b0f5 2226#endif
29209bc5 2227
6224f72b
GS		 2228 init_predump_symbols();
2229 /* init_postdump_symbols not currently designed to be called */
2230 /* more than once (ENV isn't cleared first, for example) */
2231 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2232 if (!PL_do_undump)
6224f72b
GS		 2233 init_postdump_symbols(argc,argv,env);
2234
27da23d5
JH		 2235 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2236 * or explicitly in some platforms.
085a54d9 2237 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2238 * look like the user wants to use UTF-8. */
a0fd4948 2239#if defined(__SYMBIAN32__)
27da23d5
JH		 2240 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2241#endif
e27b5b51 2242# ifndef PERL_IS_MINIPERL
06e66572
JH		 2243 if (PL_unicode) {
2244 /* Requires init_predump_symbols(). */
a05d7ebb 2245 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 2246 IO* io;
2247 PerlIO* fp;
2248 SV* sv;
2249
a05d7ebb 2250 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2251 * and the default open disciplines. */
a05d7ebb
JH		 2252 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2253 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2254 (fp = IoIFP(io)))
2255 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2256 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2257 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2258 (fp = IoOFP(io)))
2259 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2260 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2261 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2262 (fp = IoOFP(io)))
2263 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2264 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC		 2265 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2266 SVt_PV)))) {
a05d7ebb
JH		 2267 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2268 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2269 if (in) {
2270 if (out)
76f68e9b 2271 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2272 else
76f68e9b 2273 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH		 2274 }
2275 else if (out)
76f68e9b 2276 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH		 2277 SvSETMAGIC(sv);
2278 }
b310b053
JH		 2279 }
2280 }
e27b5b51 2281#endif
b310b053 2282
c7030b81
NC		 2283 {
2284 const char *s;
4ffa73a3
JH		 2285 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2286 if (strEQ(s, "unsafe"))
2287 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2288 else if (strEQ(s, "safe"))
2289 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2290 else
2291 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2292 }
c7030b81 2293 }
4ffa73a3 2294
81d86705 2295
87606032 2296 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2297 SvREFCNT_dec(linestr_sv);
95670bde 2298
219f7226 2299 PL_subname = newSVpvs("main");
6224f72b 2300
5486870f
DM		 2301 if (add_read_e_script)
2302 filter_add(read_e_script, NULL);
2303
6224f72b
GS		 2304 /* now parse the script */
2305
93189314 2306 SETERRNO(0,SS_NORMAL);
28ac2b49 2307 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2308 if (PL_minus_c)
cea2e8a9 2309 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2310 else {
cea2e8a9 2311 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2312 PL_origfilename);
6224f72b
GS		 2313 }
2314 }
57843af0 2315 CopLINE_set(PL_curcop, 0);
03d9f026 2316 SET_CURSTASH(PL_defstash);
3280af22
NIS		 2317 if (PL_e_script) {
2318 SvREFCNT_dec(PL_e_script);
a0714e2c 2319 PL_e_script = NULL;
6224f72b
GS		 2320 }
2321
3280af22 2322 if (PL_do_undump)
6224f72b
GS		 2323 my_unexec();
2324
57843af0
GS		 2325 if (isWARN_ONCE) {
2326 SAVECOPFILE(PL_curcop);
2327 SAVECOPLINE(PL_curcop);
3280af22 2328 gv_check(PL_defstash);
57843af0 2329 }
6224f72b
GS		 2330
2331 LEAVE;
2332 FREETMPS;
2333
2334#ifdef MYMALLOC
f6a607bc
RGS		 2335 {
2336 const char *s;
22ff3130
HS		 2337 UV uv;
2338 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2339 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2340 dump_mstats("after compilation:");
f6a607bc 2341 }
6224f72b
GS		 2342#endif
2343
2344 ENTER;
febb3a6d 2345 PL_restartjmpenv = NULL;
3280af22 2346 PL_restartop = 0;
312caa8e 2347 return NULL;
6224f72b
GS		 2348}
2349
954c1994
GS		 2350/*
2351=for apidoc perl_run
2352
2353Tells a Perl interpreter to run. See L<perlembed>.
2354
2355=cut
2356*/
2357
6224f72b 2358int
0cb96387 2359perl_run(pTHXx)
6224f72b 2360{
6224f72b 2361 I32 oldscope;
14dd3ad8 2362 int ret = 0;
db36c5a1 2363 dJMPENV;
6224f72b 2364
7918f24d
NC		 2365 PERL_ARGS_ASSERT_PERL_RUN;
2366#ifndef MULTIPLICITY
ed6c66dd 2367 PERL_UNUSED_ARG(my_perl);
7918f24d 2368#endif
9d4ba2ae 2369
3280af22 2370 oldscope = PL_scopestack_ix;
96e176bf
CL		 2371#ifdef VMS
2372 VMSISH_HUSHED = 0;
2373#endif
6224f72b 2374
14dd3ad8 2375 JMPENV_PUSH(ret);
6224f72b
GS		 2376 switch (ret) {
2377 case 1:
2378 cxstack_ix = -1; /* start context stack again */
312caa8e 2379 goto redo_body;
14dd3ad8 2380 case 0: /* normal completion */
14dd3ad8
GS		 2381 redo_body:
2382 run_body(oldscope);
924ba076 2383 /* FALLTHROUGH */
14dd3ad8 2384 case 2: /* my_exit() */
3280af22 2385 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 2386 LEAVE;
2387 FREETMPS;
03d9f026 2388 SET_CURSTASH(PL_defstash);
3a1ee7e8 2389 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2390 PL_endav && !PL_minus_c) {
ca7b837b 2391 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2392 call_list(oldscope, PL_endav);
9ebf26ad 2393 }
6224f72b
GS		 2394#ifdef MYMALLOC
2395 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2396 dump_mstats("after execution: ");
2397#endif
37038d91 2398 ret = STATUS_EXIT;
14dd3ad8 2399 break;
6224f72b 2400 case 3:
312caa8e
CS		 2401 if (PL_restartop) {
2402 POPSTACK_TO(PL_mainstack);
2403 goto redo_body;
6224f72b 2404 }
5637ef5b 2405 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2406 FREETMPS;
14dd3ad8
GS		 2407 ret = 1;
2408 break;
6224f72b
GS		 2409 }
2410
14dd3ad8
GS		 2411 JMPENV_POP;
2412 return ret;
312caa8e
CS		 2413}
2414
dd374669 2415STATIC void
14dd3ad8
GS		 2416S_run_body(pTHX_ I32 oldscope)
2417{
d3b97530
DM		 2418 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2419 PL_sawampersand ? "Enabling" : "Omitting",
2420 (unsigned int)(PL_sawampersand)));
6224f72b 2421
3280af22 2422 if (!PL_restartop) {
cf2782cd 2423#ifdef DEBUGGING
f0e3f042
CS		 2424 if (DEBUG_x_TEST || DEBUG_B_TEST)
2425 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC		 2426 if (!DEBUG_q_TEST)
2427 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2428#endif
6224f72b 2429
3280af22 2430 if (PL_minus_c) {
bf49b057 2431 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 2432 my_exit(0);
2433 }
3280af22 2434 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2435 PL_DBsingle_iv = 1;
9ebf26ad 2436 if (PL_initav) {
ca7b837b 2437 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2438 call_list(oldscope, PL_initav);
9ebf26ad 2439 }
f1fac472 2440#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC		 2441 if (PL_main_root && PL_main_root->op_slabbed)
2442 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2443#endif
6224f72b
GS		 2444 }
2445
2446 /* do it */
2447
ca7b837b 2448 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2449
3280af22 2450 if (PL_restartop) {
febb3a6d 2451 PL_restartjmpenv = NULL;
533c011a 2452 PL_op = PL_restartop;
3280af22 2453 PL_restartop = 0;
cea2e8a9 2454 CALLRUNOPS(aTHX);
6224f72b 2455 }
3280af22
NIS		 2456 else if (PL_main_start) {
2457 CvDEPTH(PL_main_cv) = 1;
533c011a 2458 PL_op = PL_main_start;
cea2e8a9 2459 CALLRUNOPS(aTHX);
6224f72b 2460 }
f6b3007c 2461 my_exit(0);
e5964223 2462 NOT_REACHED; /* NOTREACHED */
6224f72b
GS		 2463}
2464
954c1994 2465/*
ccfc67b7
JH		 2466=head1 SV Manipulation Functions
2467
954c1994
GS		 2468=for apidoc p||get_sv
2469
64ace3f8 2470Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2471C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC		 2472Perl variable does not exist then it will be created. If C<flags> is zero
2473and the variable does not exist then NULL is returned.
954c1994
GS		 2474
2475=cut
2476*/
2477
6224f72b 2478SV*
64ace3f8 2479Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS		 2480{
2481 GV *gv;
7918f24d
NC		 2482
2483 PERL_ARGS_ASSERT_GET_SV;
2484
64ace3f8 2485 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS		 2486 if (gv)
2487 return GvSV(gv);
a0714e2c 2488 return NULL;
6224f72b
GS		 2489}
2490
954c1994 2491/*
ccfc67b7
JH		 2492=head1 Array Manipulation Functions
2493
954c1994
GS		 2494=for apidoc p||get_av
2495
f0b90de1
SF		 2496Returns the AV of the specified Perl global or package array with the given
2497name (so it won't work on lexical variables). C<flags> are passed
72d33970 2498to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC		 2499Perl variable does not exist then it will be created. If C<flags> is zero
2500and the variable does not exist then NULL is returned.
954c1994 2501
f0b90de1
SF		 2502Perl equivalent: C<@{"$name"}>.
2503
954c1994
GS		 2504=cut
2505*/
2506
6224f72b 2507AV*
cbfd0a87 2508Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2509{
cbfd0a87 2510 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2511
2512 PERL_ARGS_ASSERT_GET_AV;
2513
cbfd0a87 2514 if (flags)
6224f72b
GS		 2515 return GvAVn(gv);
2516 if (gv)
2517 return GvAV(gv);
7d49f689 2518 return NULL;
6224f72b
GS		 2519}
2520
954c1994 2521/*
ccfc67b7
JH		 2522=head1 Hash Manipulation Functions
2523
954c1994
GS		 2524=for apidoc p||get_hv
2525
6673a63c 2526Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2527C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2528Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2529and the variable does not exist then C<NULL> is returned.
954c1994
GS		 2530
2531=cut
2532*/
2533
6224f72b 2534HV*
6673a63c 2535Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2536{
6673a63c 2537 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2538
2539 PERL_ARGS_ASSERT_GET_HV;
2540
6673a63c 2541 if (flags)
a0d0e21e
LW		 2542 return GvHVn(gv);
2543 if (gv)
2544 return GvHV(gv);
5c284bb0 2545 return NULL;
a0d0e21e
LW		 2546}
2547
954c1994 2548/*
ccfc67b7
JH		 2549=head1 CV Manipulation Functions
2550
780a5241
NC		 2551=for apidoc p||get_cvn_flags
2552
2553Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2554C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC		 2555exist then it will be declared (which has the same effect as saying
2556C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2557then NULL is returned.
2558
954c1994
GS		 2559=for apidoc p||get_cv
2560
780a5241 2561Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2562
2563=cut
2564*/
2565
a0d0e21e 2566CV*
780a5241 2567Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2568{
780a5241 2569 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC		 2570
2571 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2572
334dda80
FC		 2573 /* XXX this is probably not what they think they're getting.
2574 * It has the same effect as "sub name;", i.e. just a forward
2575 * declaration! */
780a5241 2576 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2577 return newSTUB(gv,0);
780a5241 2578 }
a0d0e21e 2579 if (gv)
8ebc5c01 2580 return GvCVu(gv);
601f1833 2581 return NULL;
a0d0e21e
LW		 2582}
2583
2c67934f
NC		 2584/* Nothing in core calls this now, but we can't replace it with a macro and
2585 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2586CV*
2587Perl_get_cv(pTHX_ const char *name, I32 flags)
2588{
7918f24d
NC		 2589 PERL_ARGS_ASSERT_GET_CV;
2590
780a5241
NC		 2591 return get_cvn_flags(name, strlen(name), flags);
2592}
2593
79072805
LW		 2594/* Be sure to refetch the stack pointer after calling these routines. */
2595
954c1994 2596/*
ccfc67b7
JH		 2597
2598=head1 Callback Functions
2599
954c1994
GS		 2600=for apidoc p||call_argv
2601
f0b90de1 2602Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2603with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2604L<perlcall>.
f0b90de1
SF		 2605
2606Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS		 2607
2608=cut
2609*/
2610
a0d0e21e 2611I32
5aaab254 2612Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2613
8ac85365
NIS		 2614 /* See G_* flags in cop.h */
2615 /* null terminated arg list */
8990e307 2616{
a0d0e21e 2617 dSP;
8990e307 2618
7918f24d
NC		 2619 PERL_ARGS_ASSERT_CALL_ARGV;
2620
924508f0 2621 PUSHMARK(SP);
3dc78631
DM		 2622 while (*argv) {
2623 mXPUSHs(newSVpv(*argv,0));
2624 argv++;
8990e307 2625 }
3dc78631 2626 PUTBACK;
864dbfa3 2627 return call_pv(sub_name, flags);
8990e307
LW		 2628}
2629
954c1994
GS		 2630/*
2631=for apidoc p||call_pv
2632
2633Performs a callback to the specified Perl sub. See L<perlcall>.
2634
2635=cut
2636*/
2637
a0d0e21e 2638I32
864dbfa3 2639Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2640 /* name of the subroutine */
2641 /* See G_* flags in cop.h */
a0d0e21e 2642{
7918f24d
NC		 2643 PERL_ARGS_ASSERT_CALL_PV;
2644
0da0e728 2645 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2646}
2647
954c1994
GS		 2648/*
2649=for apidoc p||call_method
2650
2651Performs a callback to the specified Perl method. The blessed object must
2652be on the stack. See L<perlcall>.
2653
2654=cut
2655*/
2656
a0d0e21e 2657I32
864dbfa3 2658Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2659 /* name of the subroutine */
2660 /* See G_* flags in cop.h */
a0d0e21e 2661{
46ca9bac 2662 STRLEN len;
c106c2be 2663 SV* sv;
7918f24d
NC		 2664 PERL_ARGS_ASSERT_CALL_METHOD;
2665
46ca9bac 2666 len = strlen(methname);
c106c2be
RZ		 2667 sv = flags & G_METHOD_NAMED
2668 ? sv_2mortal(newSVpvn_share(methname, len,0))
2669 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2670
c106c2be 2671 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW		 2672}
2673
2674/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2675/*
2676=for apidoc p||call_sv
2677
078e2213
TC		 2678Performs a callback to the Perl sub specified by the SV.
2679
7c0c544c 2680If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC		 2681SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2682or C<SvPV(sv)> will be used as the name of the sub to call.
2683
2684If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2685C<SvPV(sv)> will be used as the name of the method to call.
2686
2687If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2688the name of the method to call.
2689
2690Some other values are treated specially for internal use and should
2691not be depended on.
2692
2693See L<perlcall>.
954c1994
GS		 2694
2695=cut
2696*/
2697
a0d0e21e 2698I32
001d637e 2699Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2700 /* See G_* flags in cop.h */
a0d0e21e 2701{
5b434c73 2702 dVAR;
a0d0e21e 2703 LOGOP myop; /* fake syntax tree node */
b46e009d 2704 METHOP method_op;
aa689395 2705 I32 oldmark;
8ea43dc8 2706 VOL I32 retval = 0;
a0d0e21e 2707 I32 oldscope;
54310121 2708 bool oldcatch = CATCH_GET;
6224f72b 2709 int ret;
c4420975 2710 OP* const oldop = PL_op;
db36c5a1 2711 dJMPENV;
1e422769 2712
7918f24d
NC		 2713 PERL_ARGS_ASSERT_CALL_SV;
2714
a0d0e21e
LW		 2715 if (flags & G_DISCARD) {
2716 ENTER;
2717 SAVETMPS;
2718 }
2f8edad0
NC		 2719 if (!(flags & G_WANT)) {
2720 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2721 */
2722 flags |= G_SCALAR;
2723 }
a0d0e21e 2724
aa689395 2725 Zero(&myop, 1, LOGOP);
f51d4af5 2726 if (!(flags & G_NOARGS))
aa689395 2727 myop.op_flags |= OPf_STACKED;
4f911530 2728 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2729 SAVEOP();
533c011a 2730 PL_op = (OP*)&myop;
aa689395 2731
8c9009ad 2732 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD		 2733 dSP;
2734 EXTEND(SP, 1);
8c9009ad
DD		 2735 PUSHs(sv);
2736 PUTBACK;
5b434c73 2737 }
aa689395 2738 oldmark = TOPMARK;
3280af22 2739 oldscope = PL_scopestack_ix;
a0d0e21e 2740
3280af22 2741 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2742 /* Handle first BEGIN of -d. */
3280af22 2743 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2744 /* Try harder, since this may have been a sighandler, thus
2745 * curstash may be meaningless. */
ea726b52 2746 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2747 && !(flags & G_NODEBUG))
5ff48db8 2748 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2749
c106c2be 2750 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2751 Zero(&method_op, 1, METHOP);
2752 method_op.op_next = (OP*)&myop;
2753 PL_op = (OP*)&method_op;
c106c2be 2754 if ( flags & G_METHOD_NAMED ) {
b46e009d 2755 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2756 method_op.op_type = OP_METHOD_NAMED;
2757 method_op.op_u.op_meth_sv = sv;
c106c2be 2758 } else {
b46e009d 2759 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2760 method_op.op_type = OP_METHOD;
c106c2be
RZ		 2761 }
2762 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2763 myop.op_type = OP_ENTERSUB;
968b3946
GS		 2764 }
2765
312caa8e 2766 if (!(flags & G_EVAL)) {
0cdb2077 2767 CATCH_SET(TRUE);
d6f07c05 2768 CALL_BODY_SUB((OP*)&myop);
312caa8e 2769 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2770 CATCH_SET(oldcatch);
312caa8e
CS		 2771 }
2772 else {
d78bda3d 2773 myop.op_other = (OP*)&myop;
3280af22 2774 PL_markstack_ptr--;
edb2152a 2775 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2776 PL_markstack_ptr++;
a0d0e21e 2777
14dd3ad8 2778 JMPENV_PUSH(ret);
edb2152a 2779
6224f72b
GS		 2780 switch (ret) {
2781 case 0:
14dd3ad8 2782 redo_body:
d6f07c05 2783 CALL_BODY_SUB((OP*)&myop);
312caa8e 2784 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2785 if (!(flags & G_KEEPERR)) {
ab69dbc2 2786 CLEAR_ERRSV();
8433848b 2787 }
a0d0e21e 2788 break;
6224f72b 2789 case 1:
f86702cc 2790 STATUS_ALL_FAILURE;
924ba076 2791 /* FALLTHROUGH */
6224f72b 2792 case 2:
a0d0e21e 2793 /* my_exit() was called */
03d9f026 2794 SET_CURSTASH(PL_defstash);
a0d0e21e 2795 FREETMPS;
14dd3ad8 2796 JMPENV_POP;
f86702cc 2797 my_exit_jump();
e5964223 2798 NOT_REACHED; /* NOTREACHED */
6224f72b 2799 case 3:
3280af22 2800 if (PL_restartop) {
febb3a6d 2801 PL_restartjmpenv = NULL;
533c011a 2802 PL_op = PL_restartop;
3280af22 2803 PL_restartop = 0;
312caa8e 2804 goto redo_body;
a0d0e21e 2805 }
3280af22 2806 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2807 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2808 retval = 0;
2809 else {
2810 retval = 1;
3280af22 2811 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2812 }
312caa8e 2813 break;
a0d0e21e 2814 }
a0d0e21e 2815
edb2152a
NC		 2816 if (PL_scopestack_ix > oldscope)
2817 delete_eval_scope();
14dd3ad8 2818 JMPENV_POP;
a0d0e21e 2819 }
1e422769 2820
a0d0e21e 2821 if (flags & G_DISCARD) {
3280af22 2822 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2823 retval = 0;
2824 FREETMPS;
2825 LEAVE;
2826 }
533c011a 2827 PL_op = oldop;
a0d0e21e
LW		 2828 return retval;
2829}
2830
6e72f9df 2831/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2832
954c1994
GS		 2833/*
2834=for apidoc p||eval_sv
2835
72d33970 2836Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2837as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS		 2838
2839=cut
2840*/
2841
a0d0e21e 2842I32
864dbfa3 2843Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2844
8ac85365 2845 /* See G_* flags in cop.h */
a0d0e21e 2846{
97aff369 2847 dVAR;
a0d0e21e 2848 UNOP myop; /* fake syntax tree node */
5b434c73 2849 VOL I32 oldmark;
8ea43dc8 2850 VOL I32 retval = 0;
6224f72b 2851 int ret;
c4420975 2852 OP* const oldop = PL_op;
db36c5a1 2853 dJMPENV;
84902520 2854
7918f24d
NC		 2855 PERL_ARGS_ASSERT_EVAL_SV;
2856
4633a7c4
LW		 2857 if (flags & G_DISCARD) {
2858 ENTER;
2859 SAVETMPS;
2860 }
2861
462e5cf6 2862 SAVEOP();
533c011a 2863 PL_op = (OP*)&myop;
5ff48db8 2864 Zero(&myop, 1, UNOP);
5b434c73
DD		 2865 {
2866 dSP;
2867 oldmark = SP - PL_stack_base;
2868 EXTEND(SP, 1);
2869 PUSHs(sv);
2870 PUTBACK;
2871 }
79072805 2872
4633a7c4
LW		 2873 if (!(flags & G_NOARGS))
2874 myop.op_flags = OPf_STACKED;
6e72f9df 2875 myop.op_type = OP_ENTEREVAL;
4f911530 2876 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df 2877 if (flags & G_KEEPERR)
2878 myop.op_flags |= OPf_SPECIAL;
a1941760
DM		 2879
2880 if (flags & G_RE_REPARSING)
2881 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2882
dedbcade
DM		 2883 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2884 * before a PUSHEVAL, which corrupts the stack after a croak */
2885 TAINT_PROPER("eval_sv()");
2886
14dd3ad8 2887 JMPENV_PUSH(ret);
6224f72b
GS		 2888 switch (ret) {
2889 case 0:
14dd3ad8 2890 redo_body:
2ba65d5f
DM		 2891 if (PL_op == (OP*)(&myop)) {
2892 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2893 if (!PL_op)
2894 goto fail; /* failed in compilation */
2895 }
4aca2f62 2896 CALLRUNOPS(aTHX);
312caa8e 2897 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2898 if (!(flags & G_KEEPERR)) {
ab69dbc2 2899 CLEAR_ERRSV();
8433848b 2900 }
4633a7c4 2901 break;
6224f72b 2902 case 1:
f86702cc 2903 STATUS_ALL_FAILURE;
924ba076 2904 /* FALLTHROUGH */
6224f72b 2905 case 2:
4633a7c4 2906 /* my_exit() was called */
03d9f026 2907 SET_CURSTASH(PL_defstash);
4633a7c4 2908 FREETMPS;
14dd3ad8 2909 JMPENV_POP;
f86702cc 2910 my_exit_jump();
e5964223 2911 NOT_REACHED; /* NOTREACHED */
6224f72b 2912 case 3:
3280af22 2913 if (PL_restartop) {
febb3a6d 2914 PL_restartjmpenv = NULL;
533c011a 2915 PL_op = PL_restartop;
3280af22 2916 PL_restartop = 0;
312caa8e 2917 goto redo_body;
4633a7c4 2918 }
4aca2f62 2919 fail:
3280af22 2920 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2921 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 2922 retval = 0;
2923 else {
2924 retval = 1;
3280af22 2925 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2926 }
312caa8e 2927 break;
4633a7c4
LW		 2928 }
2929
14dd3ad8 2930 JMPENV_POP;
4633a7c4 2931 if (flags & G_DISCARD) {
3280af22 2932 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2933 retval = 0;
2934 FREETMPS;
2935 LEAVE;
2936 }
533c011a 2937 PL_op = oldop;
4633a7c4
LW		 2938 return retval;
2939}
2940
954c1994
GS		 2941/*
2942=for apidoc p||eval_pv
2943
422791e4 2944Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS		 2945
2946=cut
2947*/
2948
137443ea 2949SV*
864dbfa3 2950Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2951{
137443ea 2952 SV* sv = newSVpv(p, 0);
2953
7918f24d
NC		 2954 PERL_ARGS_ASSERT_EVAL_PV;
2955
864dbfa3 2956 eval_sv(sv, G_SCALAR);
137443ea 2957 SvREFCNT_dec(sv);
2958
ed1786ad
DD		 2959 {
2960 dSP;
2961 sv = POPs;
2962 PUTBACK;
2963 }
137443ea 2964
eed484f9
DD		 2965 /* just check empty string or undef? */
2966 if (croak_on_error) {
2967 SV * const errsv = ERRSV;
2968 if(SvTRUE_NN(errsv))
2969 /* replace with croak_sv? */
2970 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2971 }
137443ea 2972
2973 return sv;
2974}
2975
4633a7c4
LW		 2976/* Require a module. */
2977
954c1994 2978/*
ccfc67b7
JH		 2979=head1 Embedding Functions
2980
954c1994
GS		 2981=for apidoc p||require_pv
2982
7d3fb230
BS		 2983Tells Perl to C<require> the file named by the string argument. It is
2984analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2985implemented that way; consider using load_module instead.
954c1994 2986
7d3fb230 2987=cut */
954c1994 2988
4633a7c4 2989void
864dbfa3 2990Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2991{
d3acc0f7 2992 dSP;
97aff369 2993 SV* sv;
7918f24d
NC		 2994
2995 PERL_ARGS_ASSERT_REQUIRE_PV;
2996
e788e7d3 2997 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC		 2998 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2999 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3000 POPSTACK;
79072805
LW		 3001}
3002
76e3520e 3003STATIC void
b6f82619 3004S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3005{
ab821d7f 3006 /* This message really ought to be max 23 lines.
75c72d73 3007 * Removed -h because the user already knows that option. Others? */
fb73857a 3008
1566c39d
NC		 3009 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3010 minimum of 509 character string literals. */
27da23d5 3011 static const char * const usage_msg[] = {
1566c39d
NC		 3012" -0[octal] specify record separator (\\0, if no argument)\n"
3013" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3014" -C[number/list] enables the listed Unicode features\n"
3015" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3016" -d[:debugger] run program under debugger\n"
3017" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3018" -e program one line of program (several -e's allowed, omit programfile)\n"
3019" -E program like -e, but enables all optional features\n"
3020" -f don't do $sitelib/sitecustomize.pl at startup\n"
3021" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3022" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3023" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3024" -l[octal] enable line ending processing, specifies line terminator\n"
3025" -[mM][-]module execute \"use/no module...\" before executing program\n"
3026" -n assume \"while (<>) { ... }\" loop around program\n"
3027" -p assume loop like -n but print line also, like sed\n"
3028" -s enable rudimentary parsing for switches after programfile\n"
3029" -S look for programfile using PATH environment variable\n",
3030" -t enable tainting warnings\n"
3031" -T enable tainting checks\n"
3032" -u dump core after parsing program\n"
3033" -U allow unsafe operations\n"
3034" -v print version, patchlevel and license\n"
3035" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3036" -w enable many useful warnings\n"
1566c39d
NC		 3037" -W enable all warnings\n"
3038" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3039" -X disable all warnings\n"
3040" \n"
3041"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a 3042NULL
3043};
27da23d5 3044 const char * const *p = usage_msg;
1566c39d 3045 PerlIO *out = PerlIO_stdout();
fb73857a 3046
1566c39d
NC		 3047 PerlIO_printf(out,
3048 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3049 PL_origargv[0]);
fb73857a 3050 while (*p)
1566c39d 3051 PerlIO_puts(out, *p++);
b6f82619 3052 my_exit(0);
4633a7c4
LW		 3053}
3054
b4ab917c
DM		 3055/* convert a string of -D options (or digits) into an int.
3056 * sets *s to point to the char after the options */
3057
3058#ifdef DEBUGGING
3059int
e1ec3a88 3060Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3061{
27da23d5 3062 static const char * const usage_msgd[] = {
651b8f1a
NC		 3063 " Debugging flag values: (see also -d)\n"
3064 " p Tokenizing and parsing (with v, displays parse stack)\n"
3065 " s Stack snapshots (with v, displays all stacks)\n"
3066 " l Context (loop) stack processing\n"
3067 " t Trace execution\n"
3068 " o Method and overloading resolution\n",
3069 " c String/numeric conversions\n"
3070 " P Print profiling info, source file input state\n"
3071 " m Memory and SV allocation\n"
3072 " f Format processing\n"
3073 " r Regular expression parsing and execution\n"
3074 " x Syntax tree dump\n",
3075 " u Tainting checks\n"
3076 " H Hash dump -- usurps values()\n"
3077 " X Scratchpad allocation\n"
3078 " D Cleaning up\n"
56967202 3079 " S Op slab allocation\n"
651b8f1a
NC		 3080 " T Tokenising\n"
3081 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3082 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3083 " v Verbose: use in conjunction with other flags\n"
3084 " C Copy On Write\n"
3085 " A Consistency checks on internal structures\n"
3086 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3087 " M trace smart match resolution\n"
3088 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3089 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC		 3090 NULL
3091 };
22ff3130 3092 UV uv = 0;
7918f24d
NC		 3093
3094 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3095
b4ab917c
DM		 3096 if (isALPHA(**s)) {
3097 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3098 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3099
0eb30aeb 3100 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3101 const char * const d = strchr(debopts,**s);
b4ab917c 3102 if (d)
22ff3130 3103 uv |= 1 << (d - debopts);
b4ab917c 3104 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 3105 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3106 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 3107 }
3108 }
e6e64d9b 3109 else if (isDIGIT(**s)) {
96e440d2 3110 const char* e;
22ff3130 3111 if (grok_atoUV(*s, &uv, &e))
96e440d2 3112 *s = e;
0eb30aeb 3113 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3114 }
ddcf8bc1 3115 else if (givehelp) {
06e869a4 3116 const char *const *p = usage_msgd;
651b8f1a 3117 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3118 }
22ff3130 3119 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM		 3120}
3121#endif
3122
79072805
LW		 3123/* This routine handles any switches that can be given during run */
3124
c7030b81
NC		 3125const char *
3126Perl_moreswitches(pTHX_ const char *s)
79072805 3127{
27da23d5 3128 dVAR;
84c133a0 3129 UV rschar;
0544e6df 3130 const char option = *s; /* used to remember option in -m/-M code */
79072805 3131
7918f24d
NC		 3132 PERL_ARGS_ASSERT_MORESWITCHES;
3133
79072805
LW		 3134 switch (*s) {
3135 case '0':
a863c7d1 3136 {
f2095865 3137 I32 flags = 0;
a3b680e6 3138 STRLEN numlen;
f2095865
JH		 3139
3140 SvREFCNT_dec(PL_rs);
3141 if (s[1] == 'x' && s[2]) {
a3b680e6 3142 const char *e = s+=2;
f2095865
JH		 3143 U8 *tmps;
3144
a3b680e6
AL		 3145 while (*e)
3146 e++;
f2095865
JH		 3147 numlen = e - s;
3148 flags = PERL_SCAN_SILENT_ILLDIGIT;
3149 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3150 if (s + numlen < e) {
3151 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3152 numlen = 0;
3153 s--;
3154 }
396482e1 3155 PL_rs = newSVpvs("");
5f560d8a 3156 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865
JH		 3157 tmps = (U8*)SvPVX(PL_rs);
3158 uvchr_to_utf8(tmps, rschar);
5f560d8a 3159 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH		 3160 SvUTF8_on(PL_rs);
3161 }
3162 else {
3163 numlen = 4;
3164 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3165 if (rschar & ~((U8)~0))
3166 PL_rs = &PL_sv_undef;
3167 else if (!rschar && numlen >= 2)
396482e1 3168 PL_rs = newSVpvs("");
f2095865
JH		 3169 else {
3170 char ch = (char)rschar;
3171 PL_rs = newSVpvn(&ch, 1);
3172 }
3173 }
64ace3f8 3174 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3175 return s + numlen;
a863c7d1 3176 }
46487f74 3177 case 'C':
a05d7ebb 3178 s++;
dd374669 3179 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 3180 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3181 PL_utf8cache = -1;
46487f74 3182 return s;
2304df62 3183 case 'F':
5fc691f1 3184 PL_minus_a = TRUE;
3280af22 3185 PL_minus_F = TRUE;
24ffa309 3186 PL_minus_n = TRUE;
ebce5377
RGS		 3187 PL_splitstr = ++s;
3188 while (*s && !isSPACE(*s)) ++s;
e49e380e 3189 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3190 return s;
79072805 3191 case 'a':
3280af22 3192 PL_minus_a = TRUE;
24ffa309 3193 PL_minus_n = TRUE;
79072805
LW		 3194 s++;
3195 return s;
3196 case 'c':
3280af22 3197 PL_minus_c = TRUE;
79072805
LW		 3198 s++;
3199 return s;
3200 case 'd':
f20b2998 3201 forbid_setid('d', FALSE);
4633a7c4 3202 s++;
2cbb2ee1
RGS		 3203
3204 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3205 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS		 3206 ++s;
3207 my_setenv("PERL5DB_THREADED", "1");
3208 }
3209
70c94a19
RR		 3210 /* The following permits -d:Mod to accepts arguments following an =
3211 in the fashion that -MSome::Mod does. */
3212 if (*s == ':' || *s == '=') {
b19934fb
NC		 3213 const char *start;
3214 const char *end;
3215 SV *sv;
3216
3217 if (*++s == '-') {
3218 ++s;
3219 sv = newSVpvs("no Devel::");
3220 } else {
3221 sv = newSVpvs("use Devel::");
3222 }
3223
3224 start = s;
3225 end = s + strlen(s);
f85893a1 3226
b19934fb 3227 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3228 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3229 if (*s != '=')
f85893a1 3230 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3231 else {
3232 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3233 /* Don't use NUL as q// delimiter here, this string goes in the
3234 * environment. */
3235 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3236 }
f85893a1 3237 s = end;
184f32ec 3238 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3239 SvREFCNT_dec(sv);
4633a7c4 3240 }
ed094faf 3241 if (!PL_perldb) {
3280af22 3242 PL_perldb = PERLDB_ALL;
a0d0e21e 3243 init_debugger();
ed094faf 3244 }
79072805
LW		 3245 return s;
3246 case 'D':
0453d815 3247 {
79072805 3248#ifdef DEBUGGING
f20b2998 3249 forbid_setid('D', FALSE);
b4ab917c 3250 s++;
dd374669 3251 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3252#else /* !DEBUGGING */
0453d815 3253 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3254 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3255 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3256 for (s++; isWORDCHAR(*s); s++) ;
79072805 3257#endif
79072805 3258 return s;
2b5060ae 3259 NOT_REACHED; /* NOTREACHED */
0453d815 3260 }
4633a7c4 3261 case 'h':
b6f82619 3262 usage();
2b5060ae
DM		 3263 NOT_REACHED; /* NOTREACHED */
3264
79072805 3265 case 'i':
43c5f42d 3266 Safefree(PL_inplace);
c030f24b
GH		 3267#if defined(__CYGWIN__) /* do backup extension automagically */
3268 if (*(s+1) == '\0') {
c86a4f2e 3269 PL_inplace = savepvs(".bak");
c030f24b
GH		 3270 return s+1;
3271 }
3272#endif /* __CYGWIN__ */
5ef5d758 3273 {
d4c19fe8 3274 const char * const start = ++s;
5ef5d758
NC		 3275 while (*s && !isSPACE(*s))
3276 ++s;
3277
3278 PL_inplace = savepvn(start, s - start);
3279 }
7b8d334a 3280 if (*s) {
5ef5d758 3281 ++s;
7b8d334a 3282 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3283 s++;
7b8d334a 3284 }
fb73857a 3285 return s;
4e49a025 3286 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3287 forbid_setid('I', FALSE);
fb73857a 3288 ++s;
3289 while (*s && isSPACE(*s))
3290 ++s;
3291 if (*s) {
c7030b81 3292 const char *e, *p;
0df16ed7
GS		 3293 p = s;
3294 /* ignore trailing spaces (possibly followed by other switches) */
3295 do {
3296 for (e = p; *e && !isSPACE(*e); e++) ;
3297 p = e;
3298 while (isSPACE(*p))
3299 p++;
3300 } while (*p && *p != '-');
55b4bc1c 3301 incpush(s, e-s,
e28f3139 3302 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3303 s = p;
3304 if (*s == '-')
3305 s++;
79072805
LW		 3306 }
3307 else
a67e862a 3308 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3309 return s;
79072805 3310 case 'l':
3280af22 3311 PL_minus_l = TRUE;
79072805 3312 s++;
7889fe52
NIS		 3313 if (PL_ors_sv) {
3314 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3315 PL_ors_sv = NULL;
7889fe52 3316 }
79072805 3317 if (isDIGIT(*s)) {
53305cf1 3318 I32 flags = 0;
a3b680e6 3319 STRLEN numlen;
396482e1 3320 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3321 numlen = 3 + (*s == '0');
3322 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3323 s += numlen;
3324 }
3325 else {
8bfdd7d9 3326 if (RsPARA(PL_rs)) {
396482e1 3327 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3328 }
3329 else {
8bfdd7d9 3330 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3331 }
79072805
LW		 3332 }
3333 return s;
1a30305b 3334 case 'M':
f20b2998 3335 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3336 /* FALLTHROUGH */
1a30305b 3337 case 'm':
f20b2998 3338 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3339 if (*++s) {
c7030b81 3340 const char *start;
b64cb68c 3341 const char *end;
11343788 3342 SV *sv;
e1ec3a88 3343 const char *use = "use ";
0544e6df 3344 bool colon = FALSE;
a5f75d66 3345 /* -M-foo == 'no foo' */
d0043bd1
NC		 3346 /* Leading space on " no " is deliberate, to make both
3347 possibilities the same length. */
3348 if (*s == '-') { use = " no "; ++s; }
3349 sv = newSVpvn(use,4);
a5f75d66 3350 start = s;
1a30305b 3351 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3352 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB		 3353 if( *s++ == ':' ) {
3354 if( *s == ':' )
3355 s++;
3356 else
3357 colon = TRUE;
3358 }
3359 }
3360 if (s == start)
3361 Perl_croak(aTHX_ "Module name required with -%c option",
3362 option);
3363 if (colon)
3364 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3365 "contains single ':'",
63da6837 3366 (int)(s - start), start, option);
b64cb68c 3367 end = s + strlen(s);
c07a80fd 3368 if (*s != '=') {
b64cb68c 3369 sv_catpvn(sv, start, end - start);
0544e6df 3370 if (option == 'm') {
c07a80fd 3371 if (*s != '\0')
cea2e8a9 3372 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3373 sv_catpvs( sv, " ()");
c07a80fd 3374 }
3375 } else {
11343788 3376 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3377 /* Use NUL as q''-delimiter. */
3378 sv_catpvs(sv, " split(/,/,q\0");
3379 ++s;
3380 sv_catpvn(sv, s, end - s);
396482e1 3381 sv_catpvs(sv, "\0)");
c07a80fd 3382 }
b64cb68c 3383 s = end;
29a861e7 3384 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b 3385 }
3386 else
0544e6df 3387 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3388 return s;
79072805 3389 case 'n':
3280af22 3390 PL_minus_n = TRUE;
79072805
LW		 3391 s++;
3392 return s;
3393 case 'p':
3280af22 3394 PL_minus_p = TRUE;
79072805
LW		 3395 s++;
3396 return s;
3397 case 's':
f20b2998 3398 forbid_setid('s', FALSE);
3280af22 3399 PL_doswitches = TRUE;
79072805
LW		 3400 s++;
3401 return s;
6537fe72 3402 case 't':
27a6968b 3403 case 'T':
dc6d7f5c 3404#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3405 /* silently ignore */
dc6d7f5c 3406#elif defined(NO_TAINT_SUPPORT)
3231f579 3407 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 3408 "Cowardly refusing to run with -t or -T flags");
3409#else
3410 if (!TAINTING_get)
27a6968b 3411 TOO_LATE_FOR(*s);
284167a5 3412#endif
6537fe72 3413 s++;
463ee0b2 3414 return s;
79072805 3415 case 'u':
3280af22 3416 PL_do_undump = TRUE;
79072805
LW		 3417 s++;
3418 return s;
3419 case 'U':
3280af22 3420 PL_unsafe = TRUE;
79072805
LW		 3421 s++;
3422 return s;
3423 case 'v':
c4bc78d9
NC		 3424 minus_v();
3425 case 'w':
3426 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3427 PL_dowarn |= G_WARN_ON;
3428 }
3429 s++;
3430 return s;
3431 case 'W':
3432 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3433 if (!specialWARN(PL_compiling.cop_warnings))
3434 PerlMemShared_free(PL_compiling.cop_warnings);
3435 PL_compiling.cop_warnings = pWARN_ALL ;
3436 s++;
3437 return s;
3438 case 'X':
3439 PL_dowarn = G_WARN_ALL_OFF;
3440 if (!specialWARN(PL_compiling.cop_warnings))
3441 PerlMemShared_free(PL_compiling.cop_warnings);
3442 PL_compiling.cop_warnings = pWARN_NONE ;
3443 s++;
3444 return s;
3445 case '*':
3446 case ' ':
3447 while( *s == ' ' )
3448 ++s;
3449 if (s[0] == '-') /* Additional switches on #! line. */
3450 return s+1;
3451 break;
3452 case '-':
3453 case 0:
3454#if defined(WIN32) || !defined(PERL_STRICT_CR)
3455 case '\r':
3456#endif
3457 case '\n':
3458 case '\t':
3459 break;
3460#ifdef ALTERNATE_SHEBANG
3461 case 'S': /* OS/2 needs -S on "extproc" line. */
3462 break;
3463#endif
4bb78d63
CB		 3464 case 'e': case 'f': case 'x': case 'E':
3465#ifndef ALTERNATE_SHEBANG
3466 case 'S':
3467#endif
3468 case 'V':
c4bc78d9 3469 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC		 3470 default:
3471 Perl_croak(aTHX_
3472 "Unrecognized switch: -%.1s (-h will show valid options)",s
3473 );
c4bc78d9
NC		 3474 }
3475 return NULL;
3476}
3477
3478
3479STATIC void
3480S_minus_v(pTHX)
3481{
fc3381af 3482 PerlIO * PIO_stdout;
46807d8e 3483 {
709aee94
DD		 3484 const char * const level_str = "v" PERL_VERSION_STRING;
3485 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3486#ifdef PERL_PATCHNUM
709aee94 3487 SV* level;
23d483e2 3488# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3489 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3490# else
709aee94 3491 static const char num [] = PERL_PATCHNUM;
23d483e2 3492# endif
fc3381af 3493 {
709aee94
DD		 3494 const STRLEN num_len = sizeof(num)-1;
3495 /* A very advanced compiler would fold away the strnEQ
3496 and this whole conditional, but most (all?) won't do it.
3497 SV level could also be replaced by with preprocessor
3498 catenation.
3499 */
3500 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3501 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3502 of the interp so it might contain format characters
3503 */
3504 level = newSVpvn(num, num_len);
fc3381af 3505 } else {
709aee94 3506 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3507 }
46807d8e 3508 }
709aee94
DD		 3509#else
3510 SV* level = newSVpvn(level_str, level_len);
3511#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD		 3512 PIO_stdout = PerlIO_stdout();
3513 PerlIO_printf(PIO_stdout,
ded326e4
DG		 3514 "\nThis is perl " STRINGIFY(PERL_REVISION)
3515 ", version " STRINGIFY(PERL_VERSION)
3516 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3517 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3518 );
709aee94 3519 SvREFCNT_dec_NN(level);
46807d8e 3520 }
fb73857a 3521#if defined(LOCAL_PATCH_COUNT)
3522 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3523 PerlIO_printf(PIO_stdout,
b0e47665
GS		 3524 "\n(with %d registered patch%s, "
3525 "see perl -V for more detail)",
bb7a0f54 3526 LOCAL_PATCH_COUNT,
b0e47665 3527 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3528#endif
1a30305b 3529
fc3381af 3530 PerlIO_printf(PIO_stdout,
a6f9dd1e 3531 "\n\nCopyright 1987-2015, Larry Wall\n");
79072805 3532#ifdef MSDOS
fc3381af 3533 PerlIO_printf(PIO_stdout,
b0e47665 3534 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3535#endif
3536#ifdef DJGPP
fc3381af 3537 PerlIO_printf(PIO_stdout,
b0e47665
GS		 3538 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3539 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3540#endif
79072805 3541#ifdef OS2
fc3381af 3542 PerlIO_printf(PIO_stdout,
b0e47665 3543 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3544 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3545#endif
9d116dd7 3546#ifdef OEMVS
fc3381af 3547 PerlIO_printf(PIO_stdout,
b0e47665 3548 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3549#endif
495c5fdc 3550#ifdef __VOS__
fc3381af 3551 PerlIO_printf(PIO_stdout,
c0fcb8c5 3552 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
495c5fdc 3553#endif
a1a0e61e 3554#ifdef POSIX_BC
fc3381af 3555 PerlIO_printf(PIO_stdout,
b0e47665 3556 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3557#endif
e1caacb4 3558#ifdef UNDER_CE
fc3381af
DD		 3559 PerlIO_printf(PIO_stdout,
3560 "WINCE port by Rainer Keuchel, 2001-2002\n"
3561 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 3562 wce_hitreturn();
3563#endif
a0fd4948 3564#ifdef __SYMBIAN32__
fc3381af 3565 PerlIO_printf(PIO_stdout,
27da23d5
JH		 3566 "Symbian port by Nokia, 2004-2005\n");
3567#endif
baed7233
DL		 3568#ifdef BINARY_BUILD_NOTICE
3569 BINARY_BUILD_NOTICE;
3570#endif
fc3381af 3571 PerlIO_printf(PIO_stdout,
b0e47665 3572 "\n\
79072805 3573Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3574GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3575Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3576this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3577Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3578 my_exit(0);
79072805
LW		 3579}
3580
3581/* compliments of Tom Christiansen */
3582
3583/* unexec() can be found in the Gnu emacs distribution */
ee580363 3584/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3585
25bbd826
CB		 3586#ifdef VMS
3587#include <lib$routines.h>
3588#endif
3589
79072805 3590void
864dbfa3 3591Perl_my_unexec(pTHX)
79072805
LW		 3592{
3593#ifdef UNEXEC
b37c2d43
AL		 3594 SV * prog = newSVpv(BIN_EXP, 0);
3595 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3596 int status = 1;
79072805
LW		 3597 extern int etext;
3598
396482e1 3599 sv_catpvs(prog, "/perl");
396482e1 3600 sv_catpvs(file, ".perldump");
79072805 3601
ee580363
GS		 3602 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3603 /* unexec prints msg to stderr in case of failure */
6ad3d225 3604 PerlProc_exit(status);
79072805 3605#else
ddeaf645 3606 PERL_UNUSED_CONTEXT;
a5f75d66 3607# ifdef VMS
a5f75d66 3608 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7 3609# elif defined(WIN32) || defined(__CYGWIN__)
ddeaf645 3610 Perl_croak_nocontext("dump is not supported");
aa689395 3611# else
79072805 3612 ABORT(); /* for use with undump */
aa689395 3613# endif
a5f75d66 3614#endif
79072805
LW		 3615}
3616
cb68f92d
GS		 3617/* initialize curinterp */
3618STATIC void
cea2e8a9 3619S_init_interp(pTHX)
cb68f92d 3620{
acfe0abc 3621#ifdef MULTIPLICITY
115ff745
NC		 3622# define PERLVAR(prefix,var,type)
3623# define PERLVARA(prefix,var,n,type)
acfe0abc 3624# if defined(PERL_IMPLICIT_CONTEXT)
115ff745
NC		 3625# define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3626# define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3967c732 3627# else
115ff745
NC		 3628# define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3629# define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3630# endif
acfe0abc 3631# include "intrpvar.h"
acfe0abc
GS		 3632# undef PERLVAR
3633# undef PERLVARA
3634# undef PERLVARI
3635# undef PERLVARIC
3636#else
115ff745
NC		 3637# define PERLVAR(prefix,var,type)
3638# define PERLVARA(prefix,var,n,type)
3639# define PERLVARI(prefix,var,type,init) PL_##var = init;
3640# define PERLVARIC(prefix,var,type,init) PL_##var = init;
acfe0abc 3641# include "intrpvar.h"
acfe0abc
GS		 3642# undef PERLVAR
3643# undef PERLVARA
3644# undef PERLVARI
3645# undef PERLVARIC
cb68f92d
GS		 3646#endif
3647
cb68f92d
GS		 3648}
3649
76e3520e 3650STATIC void
cea2e8a9 3651S_init_main_stash(pTHX)
79072805 3652{
463ee0b2 3653 GV *gv;
6e72f9df 3654
03d9f026 3655 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
23579a14
NC		 3656 /* We know that the string "main" will be in the global shared string
3657 table, so it's a small saving to use it rather than allocate another
3658 8 bytes. */
18916d0d 3659 PL_curstname = newSVpvs_share("main");
fafc274c 3660 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC		 3661 /* If we hadn't caused another reference to "main" to be in the shared
3662 string table above, then it would be worth reordering these two,
3663 because otherwise all we do is delete "main" from it as a consequence
3664 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3665 SvREFCNT_dec(GvHV(gv));
23579a14 3666 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3667 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3668 SvREADONLY_on(gv);
fafc274c
NC		 3669 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3670 SVt_PVAV)));
5a5094bd 3671 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3672 GvMULTI_on(PL_incgv);
fafc274c 3673 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
4639d557 3674 SvREFCNT_inc_simple_void(PL_hintgv);
3280af22 3675 GvMULTI_on(PL_hintgv);
fafc274c 3676 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3677 SvREFCNT_inc_simple_void(PL_defgv);
d456e3f4 3678 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
5a5094bd 3679 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3680 GvMULTI_on(PL_errgv);
fafc274c 3681 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
475b1e90 3682 SvREFCNT_inc_simple_void(PL_replgv);
3280af22 3683 GvMULTI_on(PL_replgv);
cea2e8a9 3684 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2 3685#ifdef PERL_DONT_CREATE_GVSV
689fbe18 3686 (void)gv_SVadd(PL_errgv);
c69033f2 3687#endif
38a03e6e 3688 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3689 CLEAR_ERRSV();
03d9f026 3690 SET_CURSTASH(PL_defstash);
11faa288 3691 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC		 3692 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3693 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3694 SVt_PVHV));
4633a7c4 3695 /* We must init $/ before switches are processed. */
64ace3f8 3696 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW		 3697}
3698
8d113837
NC		 3699STATIC PerlIO *
3700S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
79072805 3701{
fdf5d70d 3702 int fdscript = -1;
8d113837 3703 PerlIO *rsfp = NULL;
1dfef69b 3704 Stat_t tmpstatbuf;
375ed12a 3705 int fd;
1b24ed4b 3706
7918f24d
NC		 3707 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3708
3280af22 3709 if (PL_e_script) {
8afc33d6 3710 PL_origfilename = savepvs("-e");
96436eeb 3711 }
6c4ab083 3712 else {
22ff3130
HS		 3713 const char *s;
3714 UV uv;
6c4ab083 3715 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3716 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083 3717
22ff3130
HS		 3718 if (strnEQ(scriptname, "/dev/fd/", 8)
3719 && isDIGIT(scriptname[8])
3720 && grok_atoUV(scriptname + 8, &uv, &s)
3721 && uv <= PERL_INT_MAX
3722 ) {
3723 fdscript = (int)uv;
6c4ab083 3724 if (*s) {
ae3f3efd
PS		 3725 /* PSz 18 Feb 04
3726 * Tell apart "normal" usage of fdscript, e.g.
3727 * with bash on FreeBSD:
3728 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3729 * from usage in suidperl.
3730 * Does any "normal" usage leave garbage after the number???
3731 * Is it a mistake to use a similar /dev/fd/ construct for
3732 * suidperl?
3733 */
f20b2998 3734 *suidscript = TRUE;
ae3f3efd
PS		 3735 /* PSz 20 Feb 04
3736 * Be supersafe and do some sanity-checks.
3737 * Still, can we be sure we got the right thing?
3738 */
3739 if (*s != '/') {
3740 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3741 }
3742 if (! *(s+1)) {
3743 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3744 }
6c4ab083 3745 scriptname = savepv(s + 1);
3280af22 3746 Safefree(PL_origfilename);
dd374669 3747 PL_origfilename = (char *)scriptname;
6c4ab083
GS		 3748 }
3749 }
3750 }
3751
05ec9bb3 3752 CopFILE_free(PL_curcop);
57843af0 3753 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3754 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3755 scriptname = (char *)"";
fdf5d70d 3756 if (fdscript >= 0) {
8d113837 3757 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
96436eeb 3758 }
79072805 3759 else if (!*scriptname) {
cdd8118e 3760 forbid_setid(0, *suidscript);
c0b3891a 3761 return NULL;
79072805 3762 }
96436eeb 3763 else {
9c12f1e5
RGS		 3764#ifdef FAKE_BIT_BUCKET
3765 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3766 * is called) and still have the "-e" work. (Believe it or not,
3767 * a /dev/null is required for the "-e" to work because source
3768 * filter magic is used to implement it. ) This is *not* a general
3769 * replacement for a /dev/null. What we do here is create a temp
3770 * file (an empty file), open up that as the script, and then
3771 * immediately close and unlink it. Close enough for jazz. */
3772#define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3773#define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3774#define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3775 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3776 FAKE_BIT_BUCKET_TEMPLATE
3777 };
3778 const char * const err = "Failed to create a fake bit bucket";
3779 if (strEQ(scriptname, BIT_BUCKET)) {
3780#ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
60f7fc1e 3781 int old_umask = umask(0600);
9c12f1e5 3782 int tmpfd = mkstemp(tmpname);
60f7fc1e 3783 umask(old_umask);
9c12f1e5
RGS		 3784 if (tmpfd > -1) {
3785 scriptname = tmpname;
3786 close(tmpfd);
3787 } else
3788 Perl_croak(aTHX_ err);
3789#else
3790# ifdef HAS_MKTEMP
3791 scriptname = mktemp(tmpname);
3792 if (!scriptname)
3793 Perl_croak(aTHX_ err);
3794# endif
3795#endif
3796 }
3797#endif
8d113837 3798 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
9c12f1e5
RGS		 3799#ifdef FAKE_BIT_BUCKET
3800 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3801 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3802 && strlen(scriptname) == sizeof(tmpname) - 1) {
3803 unlink(scriptname);
3804 }
3805 scriptname = BIT_BUCKET;
3806#endif
96436eeb 3807 }
8d113837 3808 if (!rsfp) {
447218f8 3809 /* PSz 16 Sep 03 Keep neat error message */
b1681ed3
RGS		 3810 if (PL_e_script)
3811 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3812 else
3813 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3814 CopFILE(PL_curcop), Strerror(errno));
13281fa4 3815 }
375ed12a 3816 fd = PerlIO_fileno(rsfp);
131d45a9 3817#if defined(HAS_FCNTL) && defined(F_SETFD) && defined(FD_CLOEXEC)
375ed12a
JH		 3818 if (fd >= 0) {
3819 /* ensure close-on-exec */
131d45a9 3820 if (fcntl(fd, F_SETFD, FD_CLOEXEC) < 0) {
375ed12a
JH		 3821 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3822 CopFILE(PL_curcop), Strerror(errno));
3823 }
3824 }
a7c81930 3825#endif
1dfef69b 3826
375ed12a
JH		 3827 if (fd < 0 ||
3828 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3829 && S_ISDIR(tmpstatbuf.st_mode)))
1dfef69b
RS		 3830 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3831 CopFILE(PL_curcop),
0c0d42ff 3832 Strerror(EISDIR));
1dfef69b 3833
8d113837 3834 return rsfp;
79072805 3835}
8d063cd8 3836
cc69b689 3837#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 3838/* Don't even need this function. */
cc69b689 3839#else
ec2019ad
NC		 3840STATIC void
3841S_validate_suid(pTHX_ PerlIO *rsfp)
3842{
dfff4baf
BF		 3843 const Uid_t my_uid = PerlProc_getuid();
3844 const Uid_t my_euid = PerlProc_geteuid();
3845 const Gid_t my_gid = PerlProc_getgid();
3846 const Gid_t my_egid = PerlProc_getegid();
985213f2 3847
ac076a5c
NC		 3848 PERL_ARGS_ASSERT_VALIDATE_SUID;
3849
985213f2 3850 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
a2e578da 3851 dVAR;
375ed12a 3852 int fd = PerlIO_fileno(rsfp);
45a23732
DD		 3853 Stat_t statbuf;
3854 if (fd < 0 || PerlLIO_fstat(fd, &statbuf) < 0) { /* may be either wrapped or real suid */
3855 Perl_croak_nocontext( "Illegal suidscript");
375ed12a 3856 }
45a23732 3857 if ((my_euid != my_uid && my_euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
375ed12a 3858 ||
45a23732 3859 (my_egid != my_gid && my_egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
375ed12a 3860 )
b28d0864 3861 if (!PL_do_undump)
cea2e8a9 3862 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c 3863FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
a687059c 3864 /* not set-id, must be wrapped */
a687059c 3865 }
79072805 3866}
cc69b689 3867#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
13281fa4 3868
76e3520e 3869STATIC void
2f9285f8 3870S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
79072805 3871{
c7030b81 3872 const char *s;
eb578fdb 3873 const char *s2;
33b78306 3874
7918f24d
NC		 3875 PERL_ARGS_ASSERT_FIND_BEGINNING;
3876
33b78306
LW		 3877 /* skip forward in input to the real script? */
3878
737c24fc 3879 do {
2f9285f8 3880 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
cea2e8a9 3881 Perl_croak(aTHX_ "No Perl script found in input\n");
4f0c37ba 3882 s2 = s;
737c24fc
Z		 3883 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3884 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3885 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3886 s2 = s;
3887 while (*s == ' ' || *s == '\t') s++;
3888 if (*s++ == '-') {
3889 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3890 || s2[-1] == '_') s2--;
3891 if (strnEQ(s2-4,"perl",4))
3892 while ((s = moreswitches(s)))
3893 ;
83025b21
LW		 3894 }
3895}
3896
afe37c7d 3897
76e3520e 3898STATIC void
cea2e8a9 3899S_init_ids(pTHX)
352d5a3a 3900{
284167a5
S		 3901 /* no need to do anything here any more if we don't
3902 * do tainting. */
dc6d7f5c 3903#ifndef NO_TAINT_SUPPORT
dfff4baf
BF		 3904 const Uid_t my_uid = PerlProc_getuid();
3905 const Uid_t my_euid = PerlProc_geteuid();
3906 const Gid_t my_gid = PerlProc_getgid();
3907 const Gid_t my_egid = PerlProc_getegid();
985213f2 3908
20b7effb
JH		 3909 PERL_UNUSED_CONTEXT;
3910
22f7c9c9 3911 /* Should not happen: */
985213f2 3912 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
284167a5
S		 3913 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3914#endif
ae3f3efd
PS		 3915 /* BUG */
3916 /* PSz 27 Feb 04
3917 * Should go by suidscript, not uid!=euid: why disallow
3918 * system("ls") in scripts run from setuid things?
3919 * Or, is this run before we check arguments and set suidscript?
3920 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3921 * (We never have suidscript, can we be sure to have fdscript?)
3922 * Or must then go by UID checks? See comments in forbid_setid also.
3923 */
748a9306 3924}
79072805 3925
a0643315
JH		 3926/* This is used very early in the lifetime of the program,
3927 * before even the options are parsed, so PL_tainting has
b0891165 3928 * not been initialized properly. */
af419de7 3929bool
8f42b153 3930Perl_doing_taint(int argc, char *argv[], char *envp[])
22f7c9c9 3931{
c3446a78
JH		 3932#ifndef PERL_IMPLICIT_SYS
3933 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3934 * before we have an interpreter-- and the whole point of this
3935 * function is to be called at such an early stage. If you are on
3936 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3937 * "tainted because running with altered effective ids', you'll
3938 * have to add your own checks somewhere in here. The two most
3939 * known samples of 'implicitness' are Win32 and NetWare, neither
3940 * of which has much of concept of 'uids'. */
dfff4baf
BF		 3941 Uid_t uid = PerlProc_getuid();
3942 Uid_t euid = PerlProc_geteuid();
3943 Gid_t gid = PerlProc_getgid();
3944 Gid_t egid = PerlProc_getegid();
6867be6d 3945 (void)envp;
22f7c9c9
JH		 3946
3947#ifdef VMS
af419de7 3948 uid |= gid << 16;
22f7c9c9
JH		 3949 euid |= egid << 16;
3950#endif
3951 if (uid && (euid != uid || egid != gid))
3952 return 1;
c3446a78 3953#endif /* !PERL_IMPLICIT_SYS */
af419de7
JH		 3954 /* This is a really primitive check; environment gets ignored only
3955 * if -T are the first chars together; otherwise one gets
3956 * "Too late" message. */
22f7c9c9 3957 if ( argc > 1 && argv[1][0] == '-'
305b8651 3958 && isALPHA_FOLD_EQ(argv[1][1], 't'))
22f7c9c9
JH		 3959 return 1;
3960 return 0;
3961}
22f7c9c9 3962
d0bafe7e
NC		 3963/* Passing the flag as a single char rather than a string is a slight space
3964 optimisation. The only message that isn't /^-.$/ is
3965 "program input from stdin", which is substituted in place of '\0', which
3966 could never be a command line flag. */
76e3520e 3967STATIC void
f20b2998 3968S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
bbce6d69 3969{
d0bafe7e
NC		 3970 char string[3] = "-x";
3971 const char *message = "program input from stdin";
3972
20b7effb 3973 PERL_UNUSED_CONTEXT;
d0bafe7e
NC		 3974 if (flag) {
3975 string[1] = flag;
3976 message = string;
3977 }
3978
ae3f3efd 3979#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
985213f2 3980 if (PerlProc_getuid() != PerlProc_geteuid())
d0bafe7e 3981 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
985213f2 3982 if (PerlProc_getgid() != PerlProc_getegid())
d0bafe7e 3983 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
ae3f3efd 3984#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
f20b2998 3985 if (suidscript)
d0bafe7e 3986 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
bbce6d69 3987}
3988
1ee4443e 3989void
5b235299
NC		 3990Perl_init_dbargs(pTHX)
3991{
3992 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3993 GV_ADDMULTI,
3994 SVt_PVAV))));
3995
3996 if (AvREAL(args)) {
3997 /* Someone has already created it.
3998 It might have entries, and if we just turn off AvREAL(), they will
3999 "leak" until global destruction. */
4000 av_clear(args);
3df49e2a 4001 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
7355df7e 4002 Perl_croak(aTHX_ "Cannot set tied @DB::args");
5b235299 4003 }
af80dd86 4004 AvREIFY_only(PL_dbargs);
5b235299
NC		 4005}
4006
4007void
1ee4443e 4008Perl_init_debugger(pTHX)
748a9306 4009{
c4420975 4010 HV * const ostash = PL_curstash;
a6d69523 4011 MAGIC *mg;
1ee4443e 4012
03d9f026 4013 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
5b235299
NC		 4014
4015 Perl_init_dbargs(aTHX);
8cece913
FC		 4016 PL_DBgv = MUTABLE_GV(
4017 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
4018 );
4019 PL_DBline = MUTABLE_GV(
4020 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4021 );
4022 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4023 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4024 ));
5c1737d1 4025 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 4026 if (!SvIOK(PL_DBsingle))
4027 sv_setiv(PL_DBsingle, 0);
a6d69523
TC		 4028 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4029 mg->mg_private = DBVARMG_SINGLE;
4030 SvSETMAGIC(PL_DBsingle);
4031
5c1737d1 4032 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 4033 if (!SvIOK(PL_DBtrace))
4034 sv_setiv(PL_DBtrace, 0);
a6d69523
TC		 4035 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4036 mg->mg_private = DBVARMG_TRACE;
4037 SvSETMAGIC(PL_DBtrace);
4038
5c1737d1 4039 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 4040 if (!SvIOK(PL_DBsignal))
4041 sv_setiv(PL_DBsignal, 0);
a6d69523
TC		 4042 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4043 mg->mg_private = DBVARMG_SIGNAL;
4044 SvSETMAGIC(PL_DBsignal);
4045
03d9f026 4046 SvREFCNT_dec(PL_curstash);
1ee4443e 4047 PL_curstash = ostash;
352d5a3a
LW		 4048}
4049
2ce36478
SM		 4050#ifndef STRESS_REALLOC
4051#define REASONABLE(size) (size)
0ff72558 4052#define REASONABLE_but_at_least(size,min) (size)
2ce36478
SM		 4053#else
4054#define REASONABLE(size) (1) /* unreasonable */
0ff72558 4055#define REASONABLE_but_at_least(size,min) (min)
2ce36478
SM		 4056#endif
4057
11343788 4058void
cea2e8a9 4059Perl_init_stacks(pTHX)
79072805 4060{
e336de0d 4061 /* start with 128-item stack and 8K cxstack */
3280af22 4062 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 4063 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 4064 PL_curstackinfo->si_type = PERLSI_MAIN;
4065 PL_curstack = PL_curstackinfo->si_stack;
4066 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 4067
3280af22
NIS		 4068 PL_stack_base = AvARRAY(PL_curstack);
4069 PL_stack_sp = PL_stack_base;
4070 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 4071
a02a5408 4072 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3280af22
NIS		 4073 PL_tmps_floor = -1;
4074 PL_tmps_ix = -1;
4075 PL_tmps_max = REASONABLE(128);
8990e307 4076
a02a5408 4077 Newx(PL_markstack,REASONABLE(32),I32);
3280af22
NIS		 4078 PL_markstack_ptr = PL_markstack;
4079 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 4080
ce2f7c3b 4081 SET_MARK_OFFSET;
e336de0d 4082
a02a5408 4083 Newx(PL_scopestack,REASONABLE(32),I32);
d343c3ef
GG		 4084#ifdef DEBUGGING
4085 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4086#endif
3280af22
NIS		 4087 PL_scopestack_ix = 0;
4088 PL_scopestack_max = REASONABLE(32);
79072805 4089
0ff72558 4090 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
3280af22 4091 PL_savestack_ix = 0;
0ff72558 4092 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
378cc40b 4093}
33b78306 4094
2ce36478
SM		 4095#undef REASONABLE
4096
76e3520e 4097STATIC void
cea2e8a9 4098S_nuke_stacks(pTHX)
6e72f9df 4099{
3280af22
NIS		 4100 while (PL_curstackinfo->si_next)
4101 PL_curstackinfo = PL_curstackinfo->si_next;
4102 while (PL_curstackinfo) {
4103 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 4104 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 4105 Safefree(PL_curstackinfo->si_cxstack);
4106 Safefree(PL_curstackinfo);
4107 PL_curstackinfo = p;
e336de0d 4108 }
3280af22
NIS		 4109 Safefree(PL_tmps_stack);
4110 Safefree(PL_markstack);
4111 Safefree(PL_scopestack);
58780814
GG		 4112#ifdef DEBUGGING
4113 Safefree(PL_scopestack_name);
4114#endif
3280af22 4115 Safefree(PL_savestack);
378cc40b 4116}
33b78306 4117
74e8ce34
NC		 4118void
4119Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4120{
4121 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4122 AV *const isa = GvAVn(gv);
4123 va_list args;
4124
4125 PERL_ARGS_ASSERT_POPULATE_ISA;
4126
4127 if(AvFILLp(isa) != -1)
4128 return;
4129
4130 /* NOTE: No support for tied ISA */
4131
4132 va_start(args, len);
4133 do {
4134 const char *const parent = va_arg(args, const char*);
4135 size_t parent_len;
4136
4137 if (!parent)
4138 break;
4139 parent_len = va_arg(args, size_t);
4140
4141 /* Arguments are supplied with a trailing :: */
4142 assert(parent_len > 2);
4143 assert(parent[parent_len - 1] == ':');
4144 assert(parent[parent_len - 2] == ':');
4145 av_push(isa, newSVpvn(parent, parent_len - 2));
4146 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4147 } while (1);
4148 va_end(args);
4149}
4150
8990e307 4151
76e3520e 4152STATIC void
cea2e8a9 4153S_init_predump_symbols(pTHX)
45d8adaa 4154{
93a17b20 4155 GV *tmpgv;
af8c498a 4156 IO *io;
79072805 4157
64ace3f8 4158 sv_setpvs(get_sv("\"", GV_ADD), " ");
e23d9e2f
CS		 4159 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4160
d963bf01
NC		 4161
4162 /* Historically, PVIOs were blessed into IO::Handle, unless
4163 FileHandle was loaded, in which case they were blessed into
4164 that. Action at a distance.
4165 However, if we simply bless into IO::Handle, we break code
4166 that assumes that PVIOs will have (among others) a seek
4167 method. IO::File inherits from IO::Handle and IO::Seekable,
4168 and provides the needed methods. But if we simply bless into
4169 it, then we break code that assumed that by loading
4170 IO::Handle, *it* would work.
4171 So a compromise is to set up the correct @IO::File::ISA,
4172 so that code that does C<use IO::Handle>; will still work.
4173 */
4174
74e8ce34
NC		 4175 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4176 STR_WITH_LEN("IO::Handle::"),
4177 STR_WITH_LEN("IO::Seekable::"),
4178 STR_WITH_LEN("Exporter::"),
4179 NULL);
d963bf01 4180
fafc274c 4181 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3280af22 4182 GvMULTI_on(PL_stdingv);
af8c498a 4183 io = GvIOp(PL_stdingv);
a04651f4 4184 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 4185 IoIFP(io) = PerlIO_stdin();
fafc274c 4186 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4187 GvMULTI_on(tmpgv);
a45c7426 4188 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4189
fafc274c 4190 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
a5f75d66 4191 GvMULTI_on(tmpgv);
af8c498a 4192 io = GvIOp(tmpgv);
a04651f4 4193 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 4194 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 4195 setdefout(tmpgv);
fafc274c 4196 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4197 GvMULTI_on(tmpgv);
a45c7426 4198 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4199
fafc274c 4200 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
bf49b057
GS		 4201 GvMULTI_on(PL_stderrgv);
4202 io = GvIOp(PL_stderrgv);
a04651f4 4203 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 4204 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
fafc274c 4205 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4206 GvMULTI_on(tmpgv);
a45c7426 4207 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4208
de61bf2a 4209 PL_statname = newSVpvs(""); /* last filename we did stat on */
79072805 4210}
33b78306 4211
a11ec5a9 4212void
5aaab254 4213Perl_init_argv_symbols(pTHX_ int argc, char **argv)
33b78306 4214{
7918f24d
NC		 4215 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4216
79072805 4217 argc--,argv++; /* skip name of script */
3280af22 4218 if (PL_doswitches) {
79072805 4219 for (; argc > 0 && **argv == '-'; argc--,argv++) {
aec46f14 4220 char *s;
79072805
LW		 4221 if (!argv[0][1])
4222 break;
379d538a 4223 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 4224 argc--,argv++;
4225 break;
4226 }
155aba94 4227 if ((s = strchr(argv[0], '='))) {
b3d904f3
NC		 4228 const char *const start_name = argv[0] + 1;
4229 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4230 TRUE, SVt_PV)), s + 1);
79072805
LW		 4231 }
4232 else
71315bf2 4233 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
fe14fcc3 4234 }
79072805 4235 }
fafc274c 4236 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
722fa0e9 4237 SvREFCNT_inc_simple_void_NN(PL_argvgv);
a11ec5a9 4238 GvMULTI_on(PL_argvgv);
a11ec5a9
RGS		 4239 av_clear(GvAVn(PL_argvgv));
4240 for (; argc > 0; argc--,argv++) {
aec46f14 4241 SV * const sv = newSVpv(argv[0],0);
b188953e 4242 av_push(GvAV(PL_argvgv),sv);
ce81ff12
JH		 4243 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4244 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4245 SvUTF8_on(sv);
4246 }
a05d7ebb
JH		 4247 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4248 (void)sv_utf8_decode(sv);
a11ec5a9
RGS		 4249 }
4250 }
82f96200
JL		 4251
4252 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4253 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4254 "-i used with no filenames on the command line, "
4255 "reading from STDIN");
a11ec5a9
RGS		 4256}
4257
4258STATIC void
5aaab254 4259S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
a11ec5a9 4260{
20b7effb 4261#ifdef USE_ITHREADS
27da23d5 4262 dVAR;
20b7effb 4263#endif
a11ec5a9 4264 GV* tmpgv;
a11ec5a9 4265
7918f24d
NC		 4266 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4267
f2da823f 4268 PL_toptarget = newSV_type(SVt_PVIV);
76f68e9b 4269 sv_setpvs(PL_toptarget, "");
f2da823f 4270 PL_bodytarget = newSV_type(SVt_PVIV);
76f68e9b 4271 sv_setpvs(PL_bodytarget, "");
3280af22 4272 PL_formtarget = PL_bodytarget;
79072805 4273
bbce6d69 4274 TAINT;
a11ec5a9
RGS		 4275
4276 init_argv_symbols(argc,argv);
4277
fafc274c 4278 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
3280af22 4279 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 4280 }
fafc274c 4281 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
79072805 4282 HV *hv;
e17132c1 4283 bool env_is_not_environ;
cf93a474 4284 SvREFCNT_inc_simple_void_NN(PL_envgv);
3280af22
NIS		 4285 GvMULTI_on(PL_envgv);
4286 hv = GvHVn(PL_envgv);
a0714e2c 4287 hv_magic(hv, NULL, PERL_MAGIC_env);
2f42fcb0 4288#ifndef PERL_MICRO
fa6a1c44 4289#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 4290 /* Note that if the supplied env parameter is actually a copy
4291 of the global environ then it may now point to free'd memory
4292 if the environment has been modified since. To avoid this
4293 problem we treat env==NULL as meaning 'use the default'
4294 */
4295 if (!env)
4296 env = environ;
e17132c1
JD		 4297 env_is_not_environ = env != environ;
4298 if (env_is_not_environ
4efc5df6
GS		 4299# ifdef USE_ITHREADS
4300 && PL_curinterp == aTHX
4301# endif
4302 )
4303 {
bd61b366 4304 environ[0] = NULL;
4efc5df6 4305 }
9b4eeda5 4306 if (env) {
9d27dca9 4307 char *s, *old_var;
27da23d5 4308 SV *sv;
764df951 4309 for (; *env; env++) {
9d27dca9
MT		 4310 old_var = *env;
4311
4312 if (!(s = strchr(old_var,'=')) || s == old_var)
79072805 4313 continue;
9d27dca9 4314
7da0e383 4315#if defined(MSDOS) && !defined(DJGPP)
61968511 4316 *s = '\0';
9d27dca9 4317 (void)strupr(old_var);
61968511 4318 *s = '=';
137443ea 4319#endif
61968511 4320 sv = newSVpv(s+1, 0);
9d27dca9 4321 (void)hv_store(hv, old_var, s - old_var, sv, 0);
e17132c1 4322 if (env_is_not_environ)
61968511 4323 mg_set(sv);
764df951 4324 }
9b4eeda5 4325 }
103a7189 4326#endif /* USE_ENVIRON_ARRAY */
2f42fcb0 4327#endif /* !PERL_MICRO */
79072805 4328 }
bbce6d69 4329 TAINT_NOT;
2710853f
MJD		 4330
4331 /* touch @F array to prevent spurious warnings 20020415 MJD */
4332 if (PL_minus_a) {
cbfd0a87 4333 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
2710853f 4334 }
33b78306 4335}
34de22dd 4336
76e3520e 4337STATIC void
2cace6ac 4338S_init_perllib(pTHX)
34de22dd 4339{
32910c7a 4340#ifndef VMS
929e5b34 4341 const char *perl5lib = NULL;
32910c7a 4342#endif
35ba5ce9 4343 const char *s;
a7560424 4344#if defined(WIN32) && !defined(PERL_IS_MINIPERL)
e6a0bbf8
NC		 4345 STRLEN len;
4346#endif
4347
284167a5 4348 if (!TAINTING_get) {
552a7a9b 4349#ifndef VMS
32910c7a 4350 perl5lib = PerlEnv_getenv("PERL5LIB");
88f5bc07
AB		 4351/*
4352 * It isn't possible to delete an environment variable with
42a3dd3a
RGS		 4353 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4354 * case we treat PERL5LIB as undefined if it has a zero-length value.
88f5bc07
AB		 4355 */
4356#if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
32910c7a 4357 if (perl5lib && *perl5lib != '\0')
88f5bc07 4358#else
32910c7a 4359 if (perl5lib)
88f5bc07 4360#endif
32910c7a 4361 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
2cace6ac 4362 else {
4705144d
NC		 4363 s = PerlEnv_getenv("PERLLIB");
4364 if (s)
50d61629 4365 incpush_use_sep(s, 0, 0);
4705144d 4366 }
552a7a9b 4367#else /* VMS */
4368 /* Treat PERL5?LIB as a possible search list logical name -- the
4369 * "natural" VMS idiom for a Unix path string. We allow each
4370 * element to be a set of |-separated directories for compatibility.
4371 */
4372 char buf[256];
4373 int idx = 0;
4374 if (my_trnlnm("PERL5LIB",buf,0))
e28f3139 4375 do {
2cace6ac 4376 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
e28f3139 4377 } while (my_trnlnm("PERL5LIB",buf,++idx));
f05b5874 4378 else {
e28f3139 4379 while (my_trnlnm("PERLLIB",buf,idx++))
50d61629 4380 incpush_use_sep(buf, 0, 0);
f05b5874 4381 }
552a7a9b 4382#endif /* VMS */
85e6fe83 4383 }
34de22dd 4384
b0e687f7
NC		 4385#ifndef PERL_IS_MINIPERL
4386 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4387 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4388
c90c0ff4 4389/* Use the ~-expanded versions of APPLLIB (undocumented),
826e305c 4390 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
df5cef82 4391*/
4633a7c4 4392#ifdef APPLLIB_EXP
be71fc8f
NC		 4393 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4394 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
16d20bd9 4395#endif
4633a7c4 4396
65f19062 4397#ifdef SITEARCH_EXP
3b290362
GS		 4398 /* sitearch is always relative to sitelib on Windows for
4399 * DLL-based path intuition to work correctly */
4400# if !defined(WIN32)
be71fc8f
NC		 4401 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4402 INCPUSH_CAN_RELOCATE);
65f19062
GS		 4403# endif
4404#endif
4405
4633a7c4 4406#ifdef SITELIB_EXP
65f19062 4407# if defined(WIN32)
574c798a 4408 /* this picks up sitearch as well */
1c68cbf7 4409 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
1fa74d9f 4410 if (s)
e6a0bbf8 4411 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
65f19062 4412# else
50d61629 4413 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
65f19062
GS		 4414# endif
4415#endif
189d1e8d 4416
65f19062 4417#ifdef PERL_VENDORARCH_EXP
4ea817c6 4418 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 4419 * DLL-based path intuition to work correctly */
4420# if !defined(WIN32)
be71fc8f
NC		 4421 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4422 INCPUSH_CAN_RELOCATE);
65f19062 4423# endif
4b03c463 4424#endif
65f19062
GS		 4425
4426#ifdef PERL_VENDORLIB_EXP
4427# if defined(WIN32)
e28f3139 4428 /* this picks up vendorarch as well */
1c68cbf7 4429 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
1fa74d9f 4430 if (s)
e6a0bbf8 4431 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
65f19062 4432# else
be71fc8f
NC		 4433 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4434 INCPUSH_CAN_RELOCATE);
65f19062 4435# endif
a3635516 4436#endif
65f19062 4437
b9ba2fad 4438#ifdef ARCHLIB_EXP
2cace6ac 4439 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
b9ba2fad
NC		 4440#endif
4441
4442#ifndef PRIVLIB_EXP
4443# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4444#endif
4445
4446#if defined(WIN32)
1c68cbf7 4447 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
2cace6ac
NC		 4448 if (s)
4449 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
b9ba2fad 4450#else
04c9eecc 4451# ifdef NETWARE
2cace6ac 4452 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
04c9eecc 4453# else
2cace6ac 4454 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
04c9eecc 4455# endif
b9ba2fad
NC		 4456#endif
4457
3b777bb4 4458#ifdef PERL_OTHERLIBDIRS
1e3208d8
NC		 4459 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4460 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
2cace6ac
NC		 4461 |INCPUSH_CAN_RELOCATE);
4462#endif
2cace6ac 4463
284167a5 4464 if (!TAINTING_get) {
2cace6ac 4465#ifndef VMS
2cace6ac
NC		 4466/*
4467 * It isn't possible to delete an environment variable with
4468 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4469 * case we treat PERL5LIB as undefined if it has a zero-length value.
4470 */
4471#if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
32910c7a 4472 if (perl5lib && *perl5lib != '\0')
2cace6ac 4473#else
32910c7a 4474 if (perl5lib)
2cace6ac 4475#endif
32910c7a
NC		 4476 incpush_use_sep(perl5lib, 0,
4477 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
2cace6ac
NC		 4478#else /* VMS */
4479 /* Treat PERL5?LIB as a possible search list logical name -- the
4480 * "natural" VMS idiom for a Unix path string. We allow each
4481 * element to be a set of |-separated directories for compatibility.
4482 */
4483 char buf[256];
4484 int idx = 0;
4485 if (my_trnlnm("PERL5LIB",buf,0))
4486 do {
be71fc8f
NC		 4487 incpush_use_sep(buf, 0,
4488 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
2cace6ac
NC		 4489 } while (my_trnlnm("PERL5LIB",buf,++idx));
4490#endif /* VMS */
a26c0e28 4491 }
2cace6ac
NC		 4492
4493/* Use the ~-expanded versions of APPLLIB (undocumented),
826e305c 4494 SITELIB and VENDORLIB for older versions
2cace6ac
NC		 4495*/
4496#ifdef APPLLIB_EXP
be71fc8f
NC		 4497 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4498 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4499#endif
4500
2cace6ac
NC		 4501#if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4502 /* Search for version-specific dirs below here */
be71fc8f
NC		 4503 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4504 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4505#endif
4506
4507
4508#if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4509 /* Search for version-specific dirs below here */
be71fc8f
NC		 4510 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4511 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4512#endif
4513
4514#ifdef PERL_OTHERLIBDIRS
1e3208d8
NC		 4515 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4516 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4517 |INCPUSH_CAN_RELOCATE);
3b777bb4 4518#endif
b0e687f7 4519#endif /* !PERL_IS_MINIPERL */
3b777bb4 4520
284167a5 4521 if (!TAINTING_get)
55b4bc1c 4522 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
774d564b 4523}
4524
739a0b84 4525#if defined(DOSISH) || defined(__SYMBIAN32__)
774d564b 4526# define PERLLIB_SEP ';'
4527#else
4528# if defined(VMS)
4529# define PERLLIB_SEP '|'
4530# else
e37778c2 4531# define PERLLIB_SEP ':'
774d564b 4532# endif
4533#endif
4534#ifndef PERLLIB_MANGLE
4535# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 4536#endif
774d564b 4537
59d6f6a4 4538#ifndef PERL_IS_MINIPERL
ad17a1ae
NC		 4539/* Push a directory onto @INC if it exists.
4540 Generate a new SV if we do this, to save needing to copy the SV we push
4541 onto @INC */
4542STATIC SV *
7ffdaae6 4543S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
ad17a1ae
NC		 4544{
4545 Stat_t tmpstatbuf;
7918f24d
NC		 4546
4547 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4548
848ef955 4549 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
ad17a1ae 4550 S_ISDIR(tmpstatbuf.st_mode)) {
3a9a9ba7 4551 av_push(av, dir);
7ffdaae6
NC		 4552 dir = newSVsv(stem);
4553 } else {
4554 /* Truncate dir back to stem. */
4555 SvCUR_set(dir, SvCUR(stem));
ad17a1ae
NC		 4556 }
4557 return dir;
4558}
59d6f6a4 4559#endif
ad17a1ae 4560
c29067d7
CH		 4561STATIC SV *
4562S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
774d564b 4563{
6434436b 4564 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
c29067d7 4565 SV *libdir;
774d564b 4566
c29067d7 4567 PERL_ARGS_ASSERT_MAYBERELOCATE;
08d0d8ab 4568 assert(len > 0);
3a9a9ba7 4569
d2898d73
EB		 4570 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4571 defined to so something (in os2/os2.c), but the code has been
4572 this way, ignoring any possible changed of length, since
4573 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4574 it be. */
4575 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
774d564b 4576
81600524 4577#ifdef VMS
db12e2d3 4578 {
81600524 4579 char *unix;
81600524
CB		 4580
4581 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4582 len = strlen(unix);
f420cce1 4583 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
81600524
CB		 4584 sv_usepvn(libdir,unix,len);
4585 }
4586 else
4587 PerlIO_printf(Perl_error_log,
4588 "Failed to unixify @INC element \"%s\"\n",
9dfa9235 4589 SvPV_nolen_const(libdir));
db12e2d3 4590 }
81600524
CB		 4591#endif
4592
dd374669
AL		 4593 /* Do the if() outside the #ifdef to avoid warnings about an unused
4594 parameter. */
4595 if (canrelocate) {
88fe16b2
NC		 4596#ifdef PERL_RELOCATABLE_INC
4597 /*
4598 * Relocatable include entries are marked with a leading .../
4599 *
4600 * The algorithm is
4601 * 0: Remove that leading ".../"
4602 * 1: Remove trailing executable name (anything after the last '/')
4603 * from the perl path to give a perl prefix
4604 * Then
4605 * While the @INC element starts "../" and the prefix ends with a real
4606 * directory (ie not . or ..) chop that real directory off the prefix
4607 * and the leading "../" from the @INC element. ie a logical "../"
4608 * cleanup
4609 * Finally concatenate the prefix and the remainder of the @INC element
4610 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4611 * generates /usr/local/lib/perl5
4612 */
890ce7af 4613 const char *libpath = SvPVX(libdir);
88fe16b2
NC		 4614 STRLEN libpath_len = SvCUR(libdir);
4615 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4616 /* Game on! */
890ce7af 4617 SV * const caret_X = get_sv("\030", 0);
88fe16b2
NC		 4618 /* Going to use the SV just as a scratch buffer holding a C
4619 string: */
4620 SV *prefix_sv;
4621 char *prefix;
4622 char *lastslash;
4623
4624 /* $^X is *the* source of taint if tainting is on, hence
4625 SvPOK() won't be true. */
4626 assert(caret_X);
4627 assert(SvPOKp(caret_X));
a663657d
NC		 4628 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4629 SvUTF8(caret_X));
88fe16b2
NC		 4630 /* Firstly take off the leading .../
4631 If all else fail we'll do the paths relative to the current
4632 directory. */
4633 sv_chop(libdir, libpath + 4);
4634 /* Don't use SvPV as we're intentionally bypassing taining,
4635 mortal copies that the mg_get of tainting creates, and
4636 corruption that seems to come via the save stack.
4637 I guess that the save stack isn't correctly set up yet. */
4638 libpath = SvPVX(libdir);
4639 libpath_len = SvCUR(libdir);
4640
4641 /* This would work more efficiently with memrchr, but as it's
4642 only a GNU extension we'd need to probe for it and
4643 implement our own. Not hard, but maybe not worth it? */
4644
4645 prefix = SvPVX(prefix_sv);
4646 lastslash = strrchr(prefix, '/');
4647
4648 /* First time in with the *lastslash = '\0' we just wipe off
4649 the trailing /perl from (say) /usr/foo/bin/perl
4650 */
4651 if (lastslash) {
4652 SV *tempsv;
4653 while ((*lastslash = '\0'), /* Do that, come what may. */
4654 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4655 && (lastslash = strrchr(prefix, '/')))) {
4656 if (lastslash[1] == '\0'
4657 || (lastslash[1] == '.'
4658 && (lastslash[2] == '/' /* ends "/." */
4659 || (lastslash[2] == '/'
4660 && lastslash[3] == '/' /* or "/.." */
4661 )))) {
4662 /* Prefix ends "/" or "/." or "/..", any of which
4663 are fishy, so don't do any more logical cleanup.
4664 */
4665 break;
4666 }
4667 /* Remove leading "../" from path */
4668 libpath += 3;
4669 libpath_len -= 3;
4670 /* Next iteration round the loop removes the last
4671 directory name from prefix by writing a '\0' in
4672 the while clause. */
4673 }
4674 /* prefix has been terminated with a '\0' to the correct
4675 length. libpath points somewhere into the libdir SV.
4676 We need to join the 2 with '/' and drop the result into
4677 libdir. */
4678 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4679 SvREFCNT_dec(libdir);
4680 /* And this is the new libdir. */
4681 libdir = tempsv;
284167a5 4682 if (TAINTING_get &&
985213f2
AB		 4683 (PerlProc_getuid() != PerlProc_geteuid() ||
4684 PerlProc_getgid() != PerlProc_getegid())) {
486ec47a 4685 /* Need to taint relocated paths if running set ID */
88fe16b2
NC		 4686 SvTAINTED_on(libdir);
4687 }
4688 }
4689 SvREFCNT_dec(prefix_sv);
4690 }
88fe16b2 4691#endif
dd374669 4692 }
c29067d7 4693 return libdir;
c29067d7
CH		 4694}
4695
4696STATIC void
4697S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4698{
c29067d7
CH		 4699#ifndef PERL_IS_MINIPERL
4700 const U8 using_sub_dirs
4701 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4702 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4703 const U8 add_versioned_sub_dirs
4704 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4705 const U8 add_archonly_sub_dirs
4706 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4707#ifdef PERL_INC_VERSION_LIST
4708 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4709#endif
4710#endif
4711 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4712 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4713 AV *const inc = GvAVn(PL_incgv);
4714
4715 PERL_ARGS_ASSERT_INCPUSH;
4716 assert(len > 0);
4717
4718 /* Could remove this vestigial extra block, if we don't mind a lot of
4719 re-indenting diff noise. */
4720 {
5a702b9a 4721 SV *const libdir = mayberelocate(dir, len, flags);
c29067d7
CH		 4722 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4723 arranged to unshift #! line -I onto the front of @INC. However,
4724 -I can add version and architecture specific libraries, and they
4725 need to go first. The old code assumed that it was always
4726 pushing. Hence to make it work, need to push the architecture
4727 (etc) libraries onto a temporary array, then "unshift" that onto
4728 the front of @INC. */
4729#ifndef PERL_IS_MINIPERL
4730 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
c29067d7 4731
774d564b 4732 /*
4733 * BEFORE pushing libdir onto @INC we may first push version- and
4734 * archname-specific sub-directories.
4735 */
ee80e7be 4736 if (using_sub_dirs) {
5a702b9a 4737 SV *subdir = newSVsv(libdir);
29d82f8d 4738#ifdef PERL_INC_VERSION_LIST
8353b874 4739 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
c4420975
AL		 4740 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4741 const char * const *incver;
29d82f8d 4742#endif
7ffdaae6 4743
1e3208d8 4744 if (add_versioned_sub_dirs) {
9c8a64f0 4745 /* .../version/archname if -d .../version/archname */
e51b748d 4746 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
7ffdaae6 4747 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4b03c463 4748
9c8a64f0 4749 /* .../version if -d .../version */
e51b748d 4750 sv_catpvs(subdir, "/" PERL_FS_VERSION);
7ffdaae6 4751 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
29d82f8d 4752 }
9c8a64f0 4753
9c8a64f0 4754#ifdef PERL_INC_VERSION_LIST
ccc2aad8 4755 if (addoldvers) {
9c8a64f0
GS		 4756 for (incver = incverlist; *incver; incver++) {
4757 /* .../xxx if -d .../xxx */
e51b748d 4758 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
7ffdaae6 4759 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
9c8a64f0
GS		 4760 }
4761 }
29d82f8d 4762#endif
c992324b 4763
1e3208d8 4764 if (add_archonly_sub_dirs) {
c992324b 4765 /* .../archname if -d .../archname */
e51b748d 4766 sv_catpvs(subdir, "/" ARCHNAME);
7ffdaae6 4767 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
c992324b
NC		 4768
4769 }
10cc20f6
NC		 4770
4771 assert (SvREFCNT(subdir) == 1);
4772 SvREFCNT_dec(subdir);
774d564b 4773 }
59d6f6a4 4774#endif /* !PERL_IS_MINIPERL */
20189146
RGS		 4775 /* finally add this lib directory at the end of @INC */
4776 if (unshift) {
76895e89 4777#ifdef PERL_IS_MINIPERL
c70927a6 4778 const Size_t extra = 0;
76895e89 4779#else
b9f2b683 4780 Size_t extra = av_tindex(av) + 1;
76895e89 4781#endif
a26c0e28
NC		 4782 av_unshift(inc, extra + push_basedir);
4783 if (push_basedir)
4784 av_store(inc, extra, libdir);
76895e89 4785#ifndef PERL_IS_MINIPERL
3a9a9ba7
NC		 4786 while (extra--) {
4787 /* av owns a reference, av_store() expects to be donated a
4788 reference, and av expects to be sane when it's cleared.
4789 If I wanted to be naughty and wrong, I could peek inside the
4790 implementation of av_clear(), realise that it uses
4791 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4792 and so directly steal from it (with a memcpy() to inc, and
4793 then memset() to NULL them out. But people copy code from the
4794 core expecting it to be best practise, so let's use the API.
4795 Although studious readers will note that I'm not checking any
4796 return codes. */
4797 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4798 }
4799 SvREFCNT_dec(av);
59d6f6a4 4800#endif
20189146 4801 }
a26c0e28 4802 else if (push_basedir) {
3a9a9ba7 4803 av_push(inc, libdir);
20189146 4804 }
a26c0e28
NC		 4805
4806 if (!push_basedir) {
4807 assert (SvREFCNT(libdir) == 1);
4808 SvREFCNT_dec(libdir);
4809 }
774d564b 4810 }
34de22dd 4811}
93a17b20 4812
55b4bc1c 4813STATIC void
50d61629 4814S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
55b4bc1c 4815{
50d61629
NC		 4816 const char *s;
4817 const char *end;
55b4bc1c
NC		 4818 /* This logic has been broken out from S_incpush(). It may be possible to
4819 simplify it. */
4820
4705144d
NC		 4821 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4822
f31c6eed
JD		 4823 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4824 * argument to incpush_use_sep. This allows creation of relocatable
4825 * Perl distributions that patch the binary at install time. Those
4826 * distributions will have to provide their own relocation tools; this
4827 * is not a feature otherwise supported by core Perl.
4828 */
4829#ifndef PERL_RELOCATABLE_INCPUSH
50d61629 4830 if (!len)
f31c6eed 4831#endif
50d61629
NC		 4832 len = strlen(p);
4833
4834 end = p + len;
4835
55b4bc1c 4836 /* Break at all separators */
e42f52dd 4837 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
50d61629
NC		 4838 if (s == p) {
4839 /* skip any consecutive separators */
55b4bc1c 4840
55b4bc1c 4841 /* Uncomment the next line for PATH semantics */
50d61629 4842 /* But you'll need to write tests */
55b4bc1c 4843 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
50d61629 4844 } else {
55b4bc1c 4845 incpush(p, (STRLEN)(s - p), flags);
55b4bc1c 4846 }
50d61629 4847 p = s + 1;
55b4bc1c 4848 }
50d61629
NC		 4849 if (p != end)
4850 incpush(p, (STRLEN)(end - p), flags);
4851
55b4bc1c 4852}
199100c8 4853
93a17b20 4854void
864dbfa3 4855Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 4856{
971a9dd3 4857 SV *atsv;
5f40764f 4858 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
312caa8e 4859 CV *cv;
22921e25 4860 STRLEN len;
6224f72b 4861 int ret;
db36c5a1 4862 dJMPENV;
93a17b20 4863
7918f24d
NC		 4864 PERL_ARGS_ASSERT_CALL_LIST;
4865
b9f2b683 4866 while (av_tindex(paramList) >= 0) {
ea726b52 4867 cv = MUTABLE_CV(av_shift(paramList));
ece599bd
RGS		 4868 if (PL_savebegin) {
4869 if (paramList == PL_beginav) {
059a8bb7 4870 /* save PL_beginav for compiler */
ad64d0ec 4871 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
ece599bd
RGS		 4872 }
4873 else if (paramList == PL_checkav) {
4874 /* save PL_checkav for compiler */
ad64d0ec 4875 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
ece599bd 4876 }
3c10abe3
AG		 4877 else if (paramList == PL_unitcheckav) {
4878 /* save PL_unitcheckav for compiler */
ad64d0ec 4879 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
3c10abe3 4880 }
059a8bb7 4881 } else {
b5bbe64a 4882 SAVEFREESV(cv);
059a8bb7 4883 }
14dd3ad8 4884 JMPENV_PUSH(ret);
6224f72b 4885 switch (ret) {
312caa8e 4886 case 0:
d6f07c05 4887 CALL_LIST_BODY(cv);
971a9dd3 4888 atsv = ERRSV;
10516c54 4889 (void)SvPV_const(atsv, len);
312caa8e
CS		 4890 if (len) {
4891 PL_curcop = &PL_compiling;
57843af0 4892 CopLINE_set(PL_curcop, oldline);
312caa8e 4893 if (paramList == PL_beginav)
396482e1 4894 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
312caa8e 4895 else
4f25aa18
GS		 4896 Perl_sv_catpvf(aTHX_ atsv,
4897 "%s failed--call queue aborted",
7d30b5c4 4898 paramList == PL_checkav ? "CHECK"
4f25aa18 4899 : paramList == PL_initav ? "INIT"
3c10abe3 4900 : paramList == PL_unitcheckav ? "UNITCHECK"
4f25aa18 4901 : "END");
312caa8e
CS		 4902 while (PL_scopestack_ix > oldscope)
4903 LEAVE;
14dd3ad8 4904 JMPENV_POP;
be2597df 4905 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
a0d0e21e 4906 }
85e6fe83 4907 break;
6224f72b 4908 case 1:
f86702cc 4909 STATUS_ALL_FAILURE;
924ba076 4910 /* FALLTHROUGH */
6224f72b 4911 case 2:
85e6fe83 4912 /* my_exit() was called */
3280af22 4913 while (PL_scopestack_ix > oldscope)
2ae324a7 4914 LEAVE;
84902520 4915 FREETMPS;
03d9f026 4916 SET_CURSTASH(PL_defstash);
3280af22 4917 PL_curcop = &PL_compiling;
57843af0 4918 CopLINE_set(PL_curcop, oldline);
14dd3ad8 4919 JMPENV_POP;
f86702cc 4920 my_exit_jump();
e5964223 4921 NOT_REACHED; /* NOTREACHED */
6224f72b 4922 case 3:
312caa8e
CS		 4923 if (PL_restartop) {
4924 PL_curcop = &PL_compiling;
57843af0 4925 CopLINE_set(PL_curcop, oldline);
312caa8e 4926 JMPENV_JUMP(3);
85e6fe83 4927 }
5637ef5b 4928 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
312caa8e
CS		 4929 FREETMPS;
4930 break;
8990e307 4931 }
14dd3ad8 4932 JMPENV_POP;
93a17b20 4933 }
93a17b20 4934}
93a17b20 4935
f86702cc 4936void
864dbfa3 4937Perl_my_exit(pTHX_ U32 status)
f86702cc 4938{
6136213b
JGM		 4939 if (PL_exit_flags & PERL_EXIT_ABORT) {
4940 abort();
4941 }
4942 if (PL_exit_flags & PERL_EXIT_WARN) {
4943 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
7b0eb0b8 4944 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
6136213b
JGM		 4945 PL_exit_flags &= ~PERL_EXIT_ABORT;
4946 }
f86702cc 4947 switch (status) {
4948 case 0:
4949 STATUS_ALL_SUCCESS;
4950 break;
4951 case 1:
4952 STATUS_ALL_FAILURE;
4953 break;
4954 default:
6ac6a52b 4955 STATUS_EXIT_SET(status);
f86702cc 4956 break;
4957 }
4958 my_exit_jump();
4959}
4960
4961void
864dbfa3 4962Perl_my_failure_exit(pTHX)
f86702cc 4963{
4964#ifdef VMS
fb38d079
JM		 4965 /* We have been called to fall on our sword. The desired exit code
4966 * should be already set in STATUS_UNIX, but could be shifted over
0968cdad
JM		 4967 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4968 * that code is set.
fb38d079
JM		 4969 *
4970 * If an error code has not been set, then force the issue.
4971 */
0968cdad
JM		 4972 if (MY_POSIX_EXIT) {
4973
e08e1e1d
JM		 4974 /* According to the die_exit.t tests, if errno is non-zero */
4975 /* It should be used for the error status. */
0968cdad 4976
e08e1e1d
JM		 4977 if (errno == EVMSERR) {
4978 STATUS_NATIVE = vaxc$errno;
4979 } else {
0968cdad 4980
e08e1e1d
JM		 4981 /* According to die_exit.t tests, if the child_exit code is */
4982 /* also zero, then we need to exit with a code of 255 */
4983 if ((errno != 0) && (errno < 256))
4984 STATUS_UNIX_EXIT_SET(errno);
4985 else if (STATUS_UNIX < 255) {
0968cdad 4986 STATUS_UNIX_EXIT_SET(255);
e08e1e1d
JM		 4987 }
4988
0968cdad 4989 }
e08e1e1d
JM		 4990
4991 /* The exit code could have been set by $? or vmsish which
4992 * means that it may not have fatal set. So convert
4993 * success/warning codes to fatal with out changing
4994 * the POSIX status code. The severity makes VMS native
4995 * status handling work, while UNIX mode programs use the
4996 * the POSIX exit codes.
4997 */
4998 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4999 STATUS_NATIVE &= STS$M_COND_ID;
5000 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
5001 }
0968cdad
JM		 5002 }
5003 else {
5004 /* Traditionally Perl on VMS always expects a Fatal Error. */
5005 if (vaxc$errno & 1) {
5006
5007 /* So force success status to failure */
5008 if (STATUS_NATIVE & 1)
5009 STATUS_ALL_FAILURE;
5010 }
5011 else {
5012 if (!vaxc$errno) {
5013 STATUS_UNIX = EINTR; /* In case something cares */
5014 STATUS_ALL_FAILURE;
5015 }
5016 else {
5017 int severity;
5018 STATUS_NATIVE = vaxc$errno; /* Should already be this */
5019
5020 /* Encode the severity code */
5021 severity = STATUS_NATIVE & STS$M_SEVERITY;
5022 STATUS_UNIX = (severity ? severity : 1) << 8;
5023
5024 /* Perl expects this to be a fatal error */
5025 if (severity != STS$K_SEVERE)
5026 STATUS_ALL_FAILURE;
5027 }
5028 }
5029 }
fb38d079 5030
f86702cc 5031#else
9b599b2a 5032 int exitstatus;
f86702cc 5033 if (errno & 255)
e5218da5 5034 STATUS_UNIX_SET(errno);
9b599b2a 5035 else {
e5218da5 5036 exitstatus = STATUS_UNIX >> 8;
9b599b2a 5037 if (exitstatus & 255)
e5218da5 5038 STATUS_UNIX_SET(exitstatus);
9b599b2a 5039 else
e5218da5 5040 STATUS_UNIX_SET(255);
9b599b2a 5041 }
f86702cc 5042#endif
6136213b
JGM		 5043 if (PL_exit_flags & PERL_EXIT_ABORT) {
5044 abort();
5045 }
5046 if (PL_exit_flags & PERL_EXIT_WARN) {
5047 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
7b0eb0b8 5048 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
6136213b
JGM		 5049 PL_exit_flags &= ~PERL_EXIT_ABORT;
5050 }
f86702cc 5051 my_exit_jump();
93a17b20
LW		 5052}
5053
76e3520e 5054STATIC void
cea2e8a9 5055S_my_exit_jump(pTHX)
f86702cc 5056{
3280af22
NIS		 5057 if (PL_e_script) {
5058 SvREFCNT_dec(PL_e_script);
a0714e2c 5059 PL_e_script = NULL;
f86702cc 5060 }
5061
3280af22 5062 POPSTACK_TO(PL_mainstack);
f97a0ef2
RH		 5063 dounwind(-1);
5064 LEAVE_SCOPE(0);
ff0cee69 5065
6224f72b 5066 JMPENV_JUMP(2);
f86702cc 5067}
873ef191 5068
0cb96387 5069static I32
acfe0abc 5070read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191 5071{
9d4ba2ae
AL		 5072 const char * const p = SvPVX_const(PL_e_script);
5073 const char *nl = strchr(p, '\n');
5074
5075 PERL_UNUSED_ARG(idx);
5076 PERL_UNUSED_ARG(maxlen);
dd374669 5077
3280af22 5078 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 5079 if (nl-p == 0) {
0cb96387 5080 filter_del(read_e_script);
873ef191 5081 return 0;
7dfe3f66 5082 }
873ef191 5083 sv_catpvn(buf_sv, p, nl-p);
3280af22 5084 sv_chop(PL_e_script, nl);
873ef191
GS		 5085 return 1;
5086}
66610fdd 5087
db6e00bd
DD		 5088/* removes boilerplate code at the end of each boot_Module xsub */
5089void
b01a1eea 5090Perl_xs_boot_epilog(pTHX_ const I32 ax)
db6e00bd
DD		 5091{
5092 if (PL_unitcheckav)
5093 call_list(PL_scopestack_ix, PL_unitcheckav);
5094 XSRETURN_YES;
5095}
5096
66610fdd 5097/*
14d04a33 5098 * ex: set ts=8 sts=4 sw=4 et:
37442d52 5099 */
Unnamed repository; edit this file 'description' to name the repository.