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pp_return: optimise a couple of conditions
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW		 2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW		 8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW		 11 */
12
a0d0e21e 13/*
4ac71550
TC		 14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC		 17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM		 21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM		 25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC		 28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH		 37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH		 39#endif
40
2aa47728 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC		 42# ifdef I_SYSUIO
43# include <sys/uio.h>
44# endif
45
46union control_un {
47 struct cmsghdr cm;
48 char control[CMSG_SPACE(sizeof(int))];
49};
50
2aa47728
NC		 51#endif
52
5311654c
JH		 53#ifndef HZ
54# ifdef CLK_TCK
55# define HZ CLK_TCK
56# else
57# define HZ 60
58# endif
59#endif
60
7114a2d2 61#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 62char *getenv (char *); /* Usually in <stdlib.h> */
54310121 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);
64935bc6 392 PL_GCB_invlist = _new_invlist_C_array(Grapheme_Cluster_Break_invlist);
06ae2722 393 PL_SB_invlist = _new_invlist_C_array(Sentence_Break_invlist);
ae3bb8ea 394 PL_WB_invlist = _new_invlist_C_array(Word_Break_invlist);
7b8dd5f4 395
8990e307 396 ENTER;
79072805
LW		 397}
398
954c1994 399/*
62375a60
NIS		 400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS		 412 return 0;
413}
414
41e4abd8
NC		 415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC		 420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC		 422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC		 426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC		 429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC		 432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC		 436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC		 441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC		 449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC		 459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC		 462 abort();
463 }
bf357333
NC		 464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC		 466 abort();
467 }
468
808ad2d0
NC		 469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC		 480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 489 abort();
490 }
491
808ad2d0
NC		 492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC		 511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS		 516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC		 530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC		 534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG		 539 assert(PL_scopestack_ix == 1);
540
7766f137
GS		 541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL		 547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH		 549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
22ff3130
HS		 553 UV uv;
554 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
555 i = (int)uv;
556 else
557 i = 0;
96e440d2 558 }
36e77d41
DD		 559#ifdef DEBUGGING
560 if (destruct_level < i) destruct_level = i;
561#endif
562#ifdef PERL_TRACK_MEMPOOL
f5199772
KW		 563 /* RT #114496, for perl_free */
564 PL_perl_destruct_level = i;
36e77d41 565#endif
5f05dabc 566 }
4633a7c4
LW		 567 }
568#endif
569
27da23d5 570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 571 dJMPENV;
572 int x = 0;
573
574 JMPENV_PUSH(x);
1b6737cc 575 PERL_UNUSED_VAR(x);
9ebf26ad 576 if (PL_endav && !PL_minus_c) {
ca7b837b 577 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 578 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 579 }
f3faeb53 580 JMPENV_POP;
26f423df 581 }
f3faeb53 582 LEAVE;
a0d0e21e 583 FREETMPS;
3d22c4f0 584 assert(PL_scopestack_ix == 0);
a0d0e21e 585
e00b64d4 586 /* Need to flush since END blocks can produce output */
f13a2bc0 587 my_fflush_all();
e00b64d4 588
75d476e2
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")) {
7dc86639
YO		 1488 unsigned char *seed= PERL_HASH_SEED;
1489 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1490 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1491 while (seed < seed_end) {
1492 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1493 }
6a5b4183
YO		 1494#ifdef PERL_HASH_RANDOMIZE_KEYS
1495 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1496 PL_HASH_RAND_BITS_ENABLED,
1497 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1498#endif
7dc86639
YO		 1499 PerlIO_printf(Perl_debug_log, "\n");
1500 }
b0891165
JH		 1501 }
1502#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1503 PL_origargc = argc;
e2975953 1504 PL_origargv = argv;
a0d0e21e 1505
a2722ac9
GA		 1506 if (PL_origalen != 0) {
1507 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1508 }
1509 else {
3cb9023d
JH		 1510 /* Set PL_origalen be the sum of the contiguous argv[]
1511 * elements plus the size of the env in case that it is
e9137a8e 1512 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1513 * as the maximum modifiable length of $0. In the worst case
1514 * the area we are able to modify is limited to the size of
43c32782 1515 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1516 * --jhi */
e1ec3a88 1517 const char *s = NULL;
54bfe034 1518 int i;
b7249aaf 1519 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1520 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1521 const UV aligned =
43c32782
JH		 1522 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1523
1524 /* See if all the arguments are contiguous in memory. Note
1525 * that 'contiguous' is a loose term because some platforms
1526 * align the argv[] and the envp[]. If the arguments look
1527 * like non-aligned, assume that they are 'strictly' or
1528 * 'traditionally' contiguous. If the arguments look like
1529 * aligned, we just check that they are within aligned
1530 * PTRSIZE bytes. As long as no system has something bizarre
1531 * like the argv[] interleaved with some other data, we are
1532 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH		 1533 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1534 while (*s) s++;
1535 for (i = 1; i < PL_origargc; i++) {
1536 if ((PL_origargv[i] == s + 1
43c32782 1537#ifdef OS2
c8941eeb 1538 || PL_origargv[i] == s + 2
43c32782 1539#endif
c8941eeb
JH		 1540 )
1541 ||
1542 (aligned &&
1543 (PL_origargv[i] > s &&
1544 PL_origargv[i] <=
1545 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1546 )
1547 {
1548 s = PL_origargv[i];
1549 while (*s) s++;
1550 }
1551 else
1552 break;
54bfe034 1553 }
54bfe034 1554 }
a4a109c2
JD		 1555
1556#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1557 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1558 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1559 if ((PL_origenviron[0] == s + 1)
43c32782
JH		 1560 ||
1561 (aligned &&
1562 (PL_origenviron[0] > s &&
1563 PL_origenviron[0] <=
1564 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1565 )
1566 {
9d419b5f 1567#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH		 1568 s = PL_origenviron[0];
1569 while (*s) s++;
1570#endif
bd61b366 1571 my_setenv("NoNe SuCh", NULL);
43c32782
JH		 1572 /* Force copy of environment. */
1573 for (i = 1; PL_origenviron[i]; i++) {
1574 if (PL_origenviron[i] == s + 1
1575 ||
1576 (aligned &&
1577 (PL_origenviron[i] > s &&
1578 PL_origenviron[i] <=
1579 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1580 )
1581 {
1582 s = PL_origenviron[i];
1583 while (*s) s++;
1584 }
1585 else
1586 break;
54bfe034 1587 }
43c32782 1588 }
54bfe034 1589 }
a4a109c2
JD		 1590#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1591
2d2af554 1592 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH		 1593 }
1594
3280af22 1595 if (PL_do_undump) {
a0d0e21e
LW		 1596
1597 /* Come here if running an undumped a.out. */
1598
3280af22
NIS		 1599 PL_origfilename = savepv(argv[0]);
1600 PL_do_undump = FALSE;
a0d0e21e 1601 cxstack_ix = -1; /* start label stack again */
748a9306 1602 init_ids();
284167a5 1603 assert (!TAINT_get);
b7975bdd 1604 TAINT;
e2051532 1605 set_caret_X();
b7975bdd 1606 TAINT_NOT;
a0d0e21e
LW		 1607 init_postdump_symbols(argc,argv,env);
1608 return 0;
1609 }
1610
3280af22 1611 if (PL_main_root) {
3280af22 1612 op_free(PL_main_root);
5f66b61c 1613 PL_main_root = NULL;
ff0cee69 1614 }
5f66b61c 1615 PL_main_start = NULL;
3280af22 1616 SvREFCNT_dec(PL_main_cv);
601f1833 1617 PL_main_cv = NULL;
79072805 1618
3280af22
NIS		 1619 time(&PL_basetime);
1620 oldscope = PL_scopestack_ix;
599cee73 1621 PL_dowarn = G_WARN_OFF;
f86702cc 1622
14dd3ad8 1623 JMPENV_PUSH(ret);
6224f72b 1624 switch (ret) {
312caa8e 1625 case 0:
14dd3ad8 1626 parse_body(env,xsinit);
9ebf26ad 1627 if (PL_unitcheckav) {
3c10abe3 1628 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1629 }
1630 if (PL_checkav) {
ca7b837b 1631 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1632 call_list(oldscope, PL_checkav);
9ebf26ad 1633 }
14dd3ad8
GS		 1634 ret = 0;
1635 break;
6224f72b
GS		 1636 case 1:
1637 STATUS_ALL_FAILURE;
924ba076 1638 /* FALLTHROUGH */
6224f72b
GS		 1639 case 2:
1640 /* my_exit() was called */
3280af22 1641 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1642 LEAVE;
1643 FREETMPS;
03d9f026 1644 SET_CURSTASH(PL_defstash);
9ebf26ad 1645 if (PL_unitcheckav) {
3c10abe3 1646 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1647 }
1648 if (PL_checkav) {
ca7b837b 1649 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1650 call_list(oldscope, PL_checkav);
9ebf26ad 1651 }
37038d91 1652 ret = STATUS_EXIT;
14dd3ad8 1653 break;
6224f72b 1654 case 3:
bf49b057 1655 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1656 ret = 1;
1657 break;
6224f72b 1658 }
14dd3ad8
GS		 1659 JMPENV_POP;
1660 return ret;
1661}
1662
4a5df386
NC		 1663/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1664 miniperl, and we need to see those flags reflected in the values here. */
1665
1666/* What this returns is subject to change. Use the public interface in Config.
1667 */
1668static void
1669S_Internals_V(pTHX_ CV *cv)
1670{
1671 dXSARGS;
1672#ifdef LOCAL_PATCH_COUNT
1673 const int local_patch_count = LOCAL_PATCH_COUNT;
1674#else
1675 const int local_patch_count = 0;
1676#endif
2dc296d2 1677 const int entries = 3 + local_patch_count;
4a5df386 1678 int i;
fe1c5936 1679 static const char non_bincompat_options[] =
4a5df386
NC		 1680# ifdef DEBUGGING
1681 " DEBUGGING"
1682# endif
1683# ifdef NO_MATHOMS
0d311fbe 1684 " NO_MATHOMS"
4a5df386 1685# endif
59b86f4b
DM		 1686# ifdef NO_HASH_SEED
1687 " NO_HASH_SEED"
1688# endif
3b0e4ee2
MB		 1689# ifdef NO_TAINT_SUPPORT
1690 " NO_TAINT_SUPPORT"
1691# endif
cb26ef7a
MB		 1692# ifdef PERL_BOOL_AS_CHAR
1693 " PERL_BOOL_AS_CHAR"
1694# endif
4a5df386
NC		 1695# ifdef PERL_DISABLE_PMC
1696 " PERL_DISABLE_PMC"
1697# endif
1698# ifdef PERL_DONT_CREATE_GVSV
1699 " PERL_DONT_CREATE_GVSV"
1700# endif
9a044a43
NC		 1701# ifdef PERL_EXTERNAL_GLOB
1702 " PERL_EXTERNAL_GLOB"
1703# endif
59b86f4b
DM		 1704# ifdef PERL_HASH_FUNC_SIPHASH
1705 " PERL_HASH_FUNC_SIPHASH"
1706# endif
1707# ifdef PERL_HASH_FUNC_SDBM
1708 " PERL_HASH_FUNC_SDBM"
1709# endif
1710# ifdef PERL_HASH_FUNC_DJB2
1711 " PERL_HASH_FUNC_DJB2"
1712# endif
1713# ifdef PERL_HASH_FUNC_SUPERFAST
1714 " PERL_HASH_FUNC_SUPERFAST"
1715# endif
1716# ifdef PERL_HASH_FUNC_MURMUR3
1717 " PERL_HASH_FUNC_MURMUR3"
1718# endif
1719# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1720 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1721# endif
1722# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1723 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1724# endif
1725# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1726 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1727# endif
4a5df386
NC		 1728# ifdef PERL_IS_MINIPERL
1729 " PERL_IS_MINIPERL"
1730# endif
1731# ifdef PERL_MALLOC_WRAP
1732 " PERL_MALLOC_WRAP"
1733# endif
1734# ifdef PERL_MEM_LOG
1735 " PERL_MEM_LOG"
1736# endif
1737# ifdef PERL_MEM_LOG_NOIMPL
1738 " PERL_MEM_LOG_NOIMPL"
1739# endif
2542212d
DM		 1740# ifdef PERL_NEW_COPY_ON_WRITE
1741 " PERL_NEW_COPY_ON_WRITE"
1742# endif
59b86f4b
DM		 1743# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1744 " PERL_PERTURB_KEYS_DETERMINISTIC"
1745# endif
1746# ifdef PERL_PERTURB_KEYS_DISABLED
1747 " PERL_PERTURB_KEYS_DISABLED"
1748# endif
1749# ifdef PERL_PERTURB_KEYS_RANDOM
1750 " PERL_PERTURB_KEYS_RANDOM"
1751# endif
c3cf41ec
NC		 1752# ifdef PERL_PRESERVE_IVUV
1753 " PERL_PRESERVE_IVUV"
1754# endif
c051e30b
NC		 1755# ifdef PERL_RELOCATABLE_INCPUSH
1756 " PERL_RELOCATABLE_INCPUSH"
1757# endif
4a5df386
NC		 1758# ifdef PERL_USE_DEVEL
1759 " PERL_USE_DEVEL"
1760# endif
1761# ifdef PERL_USE_SAFE_PUTENV
1762 " PERL_USE_SAFE_PUTENV"
1763# endif
a3749cf3
NC		 1764# ifdef UNLINK_ALL_VERSIONS
1765 " UNLINK_ALL_VERSIONS"
1766# endif
de618ee4
NC		 1767# ifdef USE_ATTRIBUTES_FOR_PERLIO
1768 " USE_ATTRIBUTES_FOR_PERLIO"
1769# endif
4a5df386
NC		 1770# ifdef USE_FAST_STDIO
1771 " USE_FAST_STDIO"
1772# endif
59b86f4b
DM		 1773# ifdef USE_HASH_SEED_EXPLICIT
1774 " USE_HASH_SEED_EXPLICIT"
1775# endif
98548bdf
NC		 1776# ifdef USE_LOCALE
1777 " USE_LOCALE"
1778# endif
98548bdf
NC		 1779# ifdef USE_LOCALE_CTYPE
1780 " USE_LOCALE_CTYPE"
1781# endif
5a8d8935
NC		 1782# ifdef USE_PERL_ATOF
1783 " USE_PERL_ATOF"
1784# endif
0d311fbe
NC		 1785# ifdef USE_SITECUSTOMIZE
1786 " USE_SITECUSTOMIZE"
1787# endif
4a5df386
NC		 1788 ;
1789 PERL_UNUSED_ARG(cv);
d3db1514 1790 PERL_UNUSED_VAR(items);
4a5df386
NC		 1791
1792 EXTEND(SP, entries);
1793
1794 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1795 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1796 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1797
1798#ifdef __DATE__
1799# ifdef __TIME__
1800 PUSHs(Perl_newSVpvn_flags(aTHX_
1801 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1802 SVs_TEMP));
1803# else
1804 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1805 SVs_TEMP));
1806# endif
1807#else
1808 PUSHs(&PL_sv_undef);
1809#endif
1810
4a5df386
NC		 1811 for (i = 1; i <= local_patch_count; i++) {
1812 /* This will be an undef, if PL_localpatches[i] is NULL. */
1813 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1814 }
1815
1816 XSRETURN(entries);
1817}
1818
be71fc8f
NC		 1819#define INCPUSH_UNSHIFT 0x01
1820#define INCPUSH_ADD_OLD_VERS 0x02
1821#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1822#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1823#define INCPUSH_NOT_BASEDIR 0x10
1824#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC		 1825#define INCPUSH_ADD_SUB_DIRS \
1826 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1827
312caa8e 1828STATIC void *
14dd3ad8 1829S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1830{
27da23d5 1831 dVAR;
2f9285f8 1832 PerlIO *rsfp;
312caa8e 1833 int argc = PL_origargc;
8f42b153 1834 char **argv = PL_origargv;
e1ec3a88 1835 const char *scriptname = NULL;
402582ca 1836 bool dosearch = FALSE;
eb578fdb 1837 char c;
737c24fc 1838 bool doextract = FALSE;
bd61b366 1839 const char *cddir = NULL;
ab019eaa 1840#ifdef USE_SITECUSTOMIZE
20ef40cf 1841 bool minus_f = FALSE;
ab019eaa 1842#endif
95670bde 1843 SV *linestr_sv = NULL;
5486870f 1844 bool add_read_e_script = FALSE;
87606032 1845 U32 lex_start_flags = 0;
009d90df 1846
ca7b837b 1847 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1848
6224f72b 1849 init_main_stash();
54310121 1850
c7030b81
NC		 1851 {
1852 const char *s;
6224f72b
GS		 1853 for (argc--,argv++; argc > 0; argc--,argv++) {
1854 if (argv[0][0] != '-' || !argv[0][1])
1855 break;
6224f72b
GS		 1856 s = argv[0]+1;
1857 reswitch:
47f56822 1858 switch ((c = *s)) {
729a02f2 1859 case 'C':
1d5472a9
GS		 1860#ifndef PERL_STRICT_CR
1861 case '\r':
1862#endif
6224f72b
GS		 1863 case ' ':
1864 case '0':
1865 case 'F':
1866 case 'a':
1867 case 'c':
1868 case 'd':
1869 case 'D':
1870 case 'h':
1871 case 'i':
1872 case 'l':
1873 case 'M':
1874 case 'm':
1875 case 'n':
1876 case 'p':
1877 case 's':
1878 case 'u':
1879 case 'U':
1880 case 'v':
599cee73
PM		 1881 case 'W':
1882 case 'X':
6224f72b 1883 case 'w':
97bd5664 1884 if ((s = moreswitches(s)))
6224f72b
GS		 1885 goto reswitch;
1886 break;
33b78306 1887
1dbad523 1888 case 't':
dc6d7f5c 1889#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1890 /* silently ignore */
dc6d7f5c 1891#elif defined(NO_TAINT_SUPPORT)
3231f579 1892 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 1893 "Cowardly refusing to run with -t or -T flags");
1894#else
22f7c9c9 1895 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
S		 1896 if( !TAINTING_get ) {
1897 TAINT_WARN_set(TRUE);
1898 TAINTING_set(TRUE);
317ea90d 1899 }
284167a5 1900#endif
317ea90d
MS		 1901 s++;
1902 goto reswitch;
6224f72b 1903 case 'T':
dc6d7f5c 1904#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1905 /* silently ignore */
dc6d7f5c 1906#elif defined(NO_TAINT_SUPPORT)
3231f579 1907 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 1908 "Cowardly refusing to run with -t or -T flags");
1909#else
22f7c9c9 1910 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
S		 1911 TAINTING_set(TRUE);
1912 TAINT_WARN_set(FALSE);
1913#endif
6224f72b
GS		 1914 s++;
1915 goto reswitch;
f86702cc 1916
bc9b29db
RH		 1917 case 'E':
1918 PL_minus_E = TRUE;
924ba076 1919 /* FALLTHROUGH */
6224f72b 1920 case 'e':
f20b2998 1921 forbid_setid('e', FALSE);
3280af22 1922 if (!PL_e_script) {
396482e1 1923 PL_e_script = newSVpvs("");
5486870f 1924 add_read_e_script = TRUE;
6224f72b
GS		 1925 }
1926 if (*++s)
3280af22 1927 sv_catpv(PL_e_script, s);
6224f72b 1928 else if (argv[1]) {
3280af22 1929 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 1930 argc--,argv++;
1931 }
1932 else
47f56822 1933 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1934 sv_catpvs(PL_e_script, "\n");
6224f72b 1935 break;
afe37c7d 1936
20ef40cf 1937 case 'f':
f5542d3a 1938#ifdef USE_SITECUSTOMIZE
20ef40cf 1939 minus_f = TRUE;
f5542d3a 1940#endif
20ef40cf
GA		 1941 s++;
1942 goto reswitch;
1943
6224f72b 1944 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1945 forbid_setid('I', FALSE);
bd61b366 1946 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS		 1947 argc--,argv++;
1948 }
6224f72b 1949 if (s && *s) {
0df16ed7 1950 STRLEN len = strlen(s);
55b4bc1c 1951 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS		 1952 }
1953 else
a67e862a 1954 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1955 break;
6224f72b 1956 case 'S':
f20b2998 1957 forbid_setid('S', FALSE);
6224f72b
GS		 1958 dosearch = TRUE;
1959 s++;
1960 goto reswitch;
1961 case 'V':
7edfd0ef
NC		 1962 {
1963 SV *opts_prog;
1964
7edfd0ef 1965 if (*++s != ':') {
37ca4a5b 1966 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC		 1967 }
1968 else {
1969 ++s;
1970 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1971 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC		 1972 0, s, 0);
1973 s += strlen(s);
1974 }
37ca4a5b 1975 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC		 1976 /* don't look for script or read stdin */
1977 scriptname = BIT_BUCKET;
1978 goto reswitch;
6224f72b 1979 }
6224f72b 1980 case 'x':
737c24fc 1981 doextract = TRUE;
6224f72b 1982 s++;
304334da 1983 if (*s)
f4c556ac 1984 cddir = s;
6224f72b
GS		 1985 break;
1986 case 0:
1987 break;
1988 case '-':
1989 if (!*++s || isSPACE(*s)) {
1990 argc--,argv++;
1991 goto switch_end;
1992 }
ee8bc8b7
NC		 1993 /* catch use of gnu style long options.
1994 Both of these exit immediately. */
1995 if (strEQ(s, "version"))
1996 minus_v();
1997 if (strEQ(s, "help"))
1998 usage();
6224f72b 1999 s--;
924ba076 2000 /* FALLTHROUGH */
6224f72b 2001 default:
cea2e8a9 2002 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 2003 }
2004 }
c7030b81
NC		 2005 }
2006
6224f72b 2007 switch_end:
54310121 2008
c7030b81
NC		 2009 {
2010 char *s;
2011
f675dbe5
CB		 2012 if (
2013#ifndef SECURE_INTERNAL_GETENV
284167a5 2014 !TAINTING_get &&
f675dbe5 2015#endif
cf756827 2016 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2017 {
9e0b0d62
KW		 2018 /* s points to static memory in getenv(), which may be overwritten at
2019 * any time; use a mortal copy instead */
2020 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2021
74288ac8
GS		 2022 while (isSPACE(*s))
2023 s++;
317ea90d 2024 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2025#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2026 /* silently ignore */
dc6d7f5c 2027#elif defined(NO_TAINT_SUPPORT)
3231f579 2028 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 2029 "Cowardly refusing to run with -t or -T flags");
2030#else
22f7c9c9 2031 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
S		 2032 TAINTING_set(TRUE);
2033 TAINT_WARN_set(FALSE);
2034#endif
317ea90d 2035 }
74288ac8 2036 else {
bd61b366 2037 char *popt_copy = NULL;
74288ac8 2038 while (s && *s) {
54913509 2039 const char *d;
74288ac8
GS		 2040 while (isSPACE(*s))
2041 s++;
2042 if (*s == '-') {
2043 s++;
2044 if (isSPACE(*s))
2045 continue;
2046 }
4ea8f8fb 2047 d = s;
74288ac8
GS		 2048 if (!*s)
2049 break;
2b622f1a 2050 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2051 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 2052 while (++s && *s) {
2053 if (isSPACE(*s)) {
cf756827 2054 if (!popt_copy) {
bfa6c418
NC		 2055 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2056 s = popt_copy + (s - d);
2057 d = popt_copy;
cf756827 2058 }
4ea8f8fb
MS		 2059 *s++ = '\0';
2060 break;
2061 }
2062 }
1c4db469 2063 if (*d == 't') {
dc6d7f5c 2064#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2065 /* silently ignore */
dc6d7f5c 2066#elif defined(NO_TAINT_SUPPORT)
3231f579 2067 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 2068 "Cowardly refusing to run with -t or -T flags");
2069#else
2070 if( !TAINTING_get) {
2071 TAINT_WARN_set(TRUE);
2072 TAINTING_set(TRUE);
317ea90d 2073 }
284167a5 2074#endif
1c4db469 2075 } else {
97bd5664 2076 moreswitches(d);
1c4db469 2077 }
6224f72b 2078 }
6224f72b
GS		 2079 }
2080 }
c7030b81 2081 }
a0d0e21e 2082
c29067d7
CH		 2083 /* Set $^X early so that it can be used for relocatable paths in @INC */
2084 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2085 assert (!TAINT_get);
c29067d7 2086 TAINT;
e2051532 2087 set_caret_X();
c29067d7
CH		 2088 TAINT_NOT;
2089
43c0c913 2090#if defined(USE_SITECUSTOMIZE)
20ef40cf 2091 if (!minus_f) {
43c0c913 2092 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC		 2093 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2094 ie a q() operator with a NUL byte as a the delimiter. This avoids
2095 problems with pathnames containing (say) ' */
43c0c913
NC		 2096# ifdef PERL_IS_MINIPERL
2097 AV *const inc = GvAV(PL_incgv);
2098 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2099
2100 if (inc0) {
15870c5c
NC		 2101 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2102 it should be reported immediately as a build failure. */
43c0c913
NC		 2103 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2104 Perl_newSVpvf(aTHX_
5de87db5 2105 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC		 2106 "do {local $!; -f $f }"
2107 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2108 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC		 2109 }
2110# else
2111 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2112 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD		 2113 if (raw_sitelib) {
2114 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2115 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2116 INCPUSH_CAN_RELOCATE);
2117 const char *const sitelib = SvPVX(sitelib_sv);
2118 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2119 Perl_newSVpvf(aTHX_
2120 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF		 2121 0, SVfARG(sitelib), 0,
2122 0, SVfARG(sitelib), 0));
bac5c4fc
JD		 2123 assert (SvREFCNT(sitelib_sv) == 1);
2124 SvREFCNT_dec(sitelib_sv);
2125 }
43c0c913 2126# endif
20ef40cf
GA		 2127 }
2128#endif
2129
6224f72b
GS		 2130 if (!scriptname)
2131 scriptname = argv[0];
3280af22 2132 if (PL_e_script) {
6224f72b
GS		 2133 argc++,argv--;
2134 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2135 }
bd61b366 2136 else if (scriptname == NULL) {
6224f72b
GS		 2137#ifdef MSDOS
2138 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2139 moreswitches("h");
6224f72b
GS		 2140#endif
2141 scriptname = "-";
2142 }
2143
284167a5 2144 assert (!TAINT_get);
2cace6ac 2145 init_perllib();
6224f72b 2146
a52eba0e 2147 {
f20b2998 2148 bool suidscript = FALSE;
829372d3 2149
8d113837 2150 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC		 2151 if (!rsfp) {
2152 rsfp = PerlIO_stdin();
87606032 2153 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2154 }
6224f72b 2155
b24bc095 2156 validate_suid(rsfp);
6224f72b 2157
64ca3a65 2158#ifndef PERL_MICRO
a52eba0e
NC		 2159# if defined(SIGCHLD) || defined(SIGCLD)
2160 {
2161# ifndef SIGCHLD
2162# define SIGCHLD SIGCLD
2163# endif
2164 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2165 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC		 2166 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2167 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC		 2168 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2169 }
0b5b802d 2170 }
a52eba0e 2171# endif
64ca3a65 2172#endif
0b5b802d 2173
737c24fc 2174 if (doextract) {
faef540c 2175
f20b2998 2176 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC		 2177 setuid scripts. */
2178 forbid_setid('x', suidscript);
f20b2998 2179 /* Hence you can't get here if suidscript is true */
faef540c 2180
95670bde
NC		 2181 linestr_sv = newSV_type(SVt_PV);
2182 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2183 find_beginning(linestr_sv, rsfp);
a52eba0e
NC		 2184 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2185 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2186 }
f4c556ac 2187 }
6224f72b 2188
ea726b52 2189 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS		 2190 CvUNIQUE_on(PL_compcv);
2191
eacbb379 2192 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2193
dd69841b
BB		 2194 PL_isarev = newHV();
2195
0c4f7ff0 2196 boot_core_PerlIO();
6224f72b 2197 boot_core_UNIVERSAL();
e1a479c5 2198 boot_core_mro();
4a5df386 2199 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS		 2200
2201 if (xsinit)
acfe0abc 2202 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2203#ifndef PERL_MICRO
739a0b84 2204#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2205 init_os_extras();
6224f72b 2206#endif
64ca3a65 2207#endif
6224f72b 2208
29209bc5 2209#ifdef USE_SOCKS
1b9c9cf5
DH		 2210# ifdef HAS_SOCKS5_INIT
2211 socks5_init(argv[0]);
2212# else
29209bc5 2213 SOCKSinit(argv[0]);
1b9c9cf5 2214# endif
ac27b0f5 2215#endif
29209bc5 2216
6224f72b
GS		 2217 init_predump_symbols();
2218 /* init_postdump_symbols not currently designed to be called */
2219 /* more than once (ENV isn't cleared first, for example) */
2220 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2221 if (!PL_do_undump)
6224f72b
GS		 2222 init_postdump_symbols(argc,argv,env);
2223
27da23d5
JH		 2224 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2225 * or explicitly in some platforms.
085a54d9 2226 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2227 * look like the user wants to use UTF-8. */
a0fd4948 2228#if defined(__SYMBIAN32__)
27da23d5
JH		 2229 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2230#endif
e27b5b51 2231# ifndef PERL_IS_MINIPERL
06e66572
JH		 2232 if (PL_unicode) {
2233 /* Requires init_predump_symbols(). */
a05d7ebb 2234 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 2235 IO* io;
2236 PerlIO* fp;
2237 SV* sv;
2238
a05d7ebb 2239 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2240 * and the default open disciplines. */
a05d7ebb
JH		 2241 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2242 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2243 (fp = IoIFP(io)))
2244 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2245 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2246 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2247 (fp = IoOFP(io)))
2248 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2249 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2250 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2251 (fp = IoOFP(io)))
2252 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2253 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC		 2254 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2255 SVt_PV)))) {
a05d7ebb
JH		 2256 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2257 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2258 if (in) {
2259 if (out)
76f68e9b 2260 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2261 else
76f68e9b 2262 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH		 2263 }
2264 else if (out)
76f68e9b 2265 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH		 2266 SvSETMAGIC(sv);
2267 }
b310b053
JH		 2268 }
2269 }
e27b5b51 2270#endif
b310b053 2271
c7030b81
NC		 2272 {
2273 const char *s;
4ffa73a3
JH		 2274 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2275 if (strEQ(s, "unsafe"))
2276 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2277 else if (strEQ(s, "safe"))
2278 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2279 else
2280 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2281 }
c7030b81 2282 }
4ffa73a3 2283
81d86705 2284
87606032 2285 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2286 SvREFCNT_dec(linestr_sv);
95670bde 2287
219f7226 2288 PL_subname = newSVpvs("main");
6224f72b 2289
5486870f
DM		 2290 if (add_read_e_script)
2291 filter_add(read_e_script, NULL);
2292
6224f72b
GS		 2293 /* now parse the script */
2294
93189314 2295 SETERRNO(0,SS_NORMAL);
28ac2b49 2296 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2297 if (PL_minus_c)
cea2e8a9 2298 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2299 else {
cea2e8a9 2300 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2301 PL_origfilename);
6224f72b
GS		 2302 }
2303 }
57843af0 2304 CopLINE_set(PL_curcop, 0);
03d9f026 2305 SET_CURSTASH(PL_defstash);
3280af22
NIS		 2306 if (PL_e_script) {
2307 SvREFCNT_dec(PL_e_script);
a0714e2c 2308 PL_e_script = NULL;
6224f72b
GS		 2309 }
2310
3280af22 2311 if (PL_do_undump)
6224f72b
GS		 2312 my_unexec();
2313
57843af0
GS		 2314 if (isWARN_ONCE) {
2315 SAVECOPFILE(PL_curcop);
2316 SAVECOPLINE(PL_curcop);
3280af22 2317 gv_check(PL_defstash);
57843af0 2318 }
6224f72b
GS		 2319
2320 LEAVE;
2321 FREETMPS;
2322
2323#ifdef MYMALLOC
f6a607bc
RGS		 2324 {
2325 const char *s;
22ff3130
HS		 2326 UV uv;
2327 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2328 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2329 dump_mstats("after compilation:");
f6a607bc 2330 }
6224f72b
GS		 2331#endif
2332
2333 ENTER;
febb3a6d 2334 PL_restartjmpenv = NULL;
3280af22 2335 PL_restartop = 0;
312caa8e 2336 return NULL;
6224f72b
GS		 2337}
2338
954c1994
GS		 2339/*
2340=for apidoc perl_run
2341
2342Tells a Perl interpreter to run. See L<perlembed>.
2343
2344=cut
2345*/
2346
6224f72b 2347int
0cb96387 2348perl_run(pTHXx)
6224f72b 2349{
6224f72b 2350 I32 oldscope;
14dd3ad8 2351 int ret = 0;
db36c5a1 2352 dJMPENV;
6224f72b 2353
7918f24d
NC		 2354 PERL_ARGS_ASSERT_PERL_RUN;
2355#ifndef MULTIPLICITY
ed6c66dd 2356 PERL_UNUSED_ARG(my_perl);
7918f24d 2357#endif
9d4ba2ae 2358
3280af22 2359 oldscope = PL_scopestack_ix;
96e176bf
CL		 2360#ifdef VMS
2361 VMSISH_HUSHED = 0;
2362#endif
6224f72b 2363
14dd3ad8 2364 JMPENV_PUSH(ret);
6224f72b
GS		 2365 switch (ret) {
2366 case 1:
2367 cxstack_ix = -1; /* start context stack again */
312caa8e 2368 goto redo_body;
14dd3ad8 2369 case 0: /* normal completion */
14dd3ad8
GS		 2370 redo_body:
2371 run_body(oldscope);
924ba076 2372 /* FALLTHROUGH */
14dd3ad8 2373 case 2: /* my_exit() */
3280af22 2374 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 2375 LEAVE;
2376 FREETMPS;
03d9f026 2377 SET_CURSTASH(PL_defstash);
3a1ee7e8 2378 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2379 PL_endav && !PL_minus_c) {
ca7b837b 2380 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2381 call_list(oldscope, PL_endav);
9ebf26ad 2382 }
6224f72b
GS		 2383#ifdef MYMALLOC
2384 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2385 dump_mstats("after execution: ");
2386#endif
37038d91 2387 ret = STATUS_EXIT;
14dd3ad8 2388 break;
6224f72b 2389 case 3:
312caa8e
CS		 2390 if (PL_restartop) {
2391 POPSTACK_TO(PL_mainstack);
2392 goto redo_body;
6224f72b 2393 }
5637ef5b 2394 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2395 FREETMPS;
14dd3ad8
GS		 2396 ret = 1;
2397 break;
6224f72b
GS		 2398 }
2399
14dd3ad8
GS		 2400 JMPENV_POP;
2401 return ret;
312caa8e
CS		 2402}
2403
dd374669 2404STATIC void
14dd3ad8
GS		 2405S_run_body(pTHX_ I32 oldscope)
2406{
d3b97530
DM		 2407 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2408 PL_sawampersand ? "Enabling" : "Omitting",
2409 (unsigned int)(PL_sawampersand)));
6224f72b 2410
3280af22 2411 if (!PL_restartop) {
cf2782cd 2412#ifdef DEBUGGING
f0e3f042
CS		 2413 if (DEBUG_x_TEST || DEBUG_B_TEST)
2414 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC		 2415 if (!DEBUG_q_TEST)
2416 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2417#endif
6224f72b 2418
3280af22 2419 if (PL_minus_c) {
bf49b057 2420 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 2421 my_exit(0);
2422 }
3280af22 2423 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2424 PL_DBsingle_iv = 1;
9ebf26ad 2425 if (PL_initav) {
ca7b837b 2426 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2427 call_list(oldscope, PL_initav);
9ebf26ad 2428 }
f1fac472 2429#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC		 2430 if (PL_main_root && PL_main_root->op_slabbed)
2431 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2432#endif
6224f72b
GS		 2433 }
2434
2435 /* do it */
2436
ca7b837b 2437 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2438
3280af22 2439 if (PL_restartop) {
febb3a6d 2440 PL_restartjmpenv = NULL;
533c011a 2441 PL_op = PL_restartop;
3280af22 2442 PL_restartop = 0;
cea2e8a9 2443 CALLRUNOPS(aTHX);
6224f72b 2444 }
3280af22
NIS		 2445 else if (PL_main_start) {
2446 CvDEPTH(PL_main_cv) = 1;
533c011a 2447 PL_op = PL_main_start;
cea2e8a9 2448 CALLRUNOPS(aTHX);
6224f72b 2449 }
f6b3007c 2450 my_exit(0);
e5964223 2451 NOT_REACHED; /* NOTREACHED */
6224f72b
GS		 2452}
2453
954c1994 2454/*
ccfc67b7
JH		 2455=head1 SV Manipulation Functions
2456
954c1994
GS		 2457=for apidoc p||get_sv
2458
64ace3f8 2459Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2460C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC		 2461Perl variable does not exist then it will be created. If C<flags> is zero
2462and the variable does not exist then NULL is returned.
954c1994
GS		 2463
2464=cut
2465*/
2466
6224f72b 2467SV*
64ace3f8 2468Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS		 2469{
2470 GV *gv;
7918f24d
NC		 2471
2472 PERL_ARGS_ASSERT_GET_SV;
2473
64ace3f8 2474 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS		 2475 if (gv)
2476 return GvSV(gv);
a0714e2c 2477 return NULL;
6224f72b
GS		 2478}
2479
954c1994 2480/*
ccfc67b7
JH		 2481=head1 Array Manipulation Functions
2482
954c1994
GS		 2483=for apidoc p||get_av
2484
f0b90de1
SF		 2485Returns the AV of the specified Perl global or package array with the given
2486name (so it won't work on lexical variables). C<flags> are passed
72d33970 2487to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC		 2488Perl variable does not exist then it will be created. If C<flags> is zero
2489and the variable does not exist then NULL is returned.
954c1994 2490
f0b90de1
SF		 2491Perl equivalent: C<@{"$name"}>.
2492
954c1994
GS		 2493=cut
2494*/
2495
6224f72b 2496AV*
cbfd0a87 2497Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2498{
cbfd0a87 2499 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2500
2501 PERL_ARGS_ASSERT_GET_AV;
2502
cbfd0a87 2503 if (flags)
6224f72b
GS		 2504 return GvAVn(gv);
2505 if (gv)
2506 return GvAV(gv);
7d49f689 2507 return NULL;
6224f72b
GS		 2508}
2509
954c1994 2510/*
ccfc67b7
JH		 2511=head1 Hash Manipulation Functions
2512
954c1994
GS		 2513=for apidoc p||get_hv
2514
6673a63c 2515Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2516C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC		 2517Perl variable does not exist then it will be created. If C<flags> is zero
2518and the variable does not exist then NULL is returned.
954c1994
GS		 2519
2520=cut
2521*/
2522
6224f72b 2523HV*
6673a63c 2524Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2525{
6673a63c 2526 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2527
2528 PERL_ARGS_ASSERT_GET_HV;
2529
6673a63c 2530 if (flags)
a0d0e21e
LW		 2531 return GvHVn(gv);
2532 if (gv)
2533 return GvHV(gv);
5c284bb0 2534 return NULL;
a0d0e21e
LW		 2535}
2536
954c1994 2537/*
ccfc67b7
JH		 2538=head1 CV Manipulation Functions
2539
780a5241
NC		 2540=for apidoc p||get_cvn_flags
2541
2542Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2543C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC		 2544exist then it will be declared (which has the same effect as saying
2545C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2546then NULL is returned.
2547
954c1994
GS		 2548=for apidoc p||get_cv
2549
780a5241 2550Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2551
2552=cut
2553*/
2554
a0d0e21e 2555CV*
780a5241 2556Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2557{
780a5241 2558 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC		 2559
2560 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2561
334dda80
FC		 2562 /* XXX this is probably not what they think they're getting.
2563 * It has the same effect as "sub name;", i.e. just a forward
2564 * declaration! */
780a5241 2565 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2566 return newSTUB(gv,0);
780a5241 2567 }
a0d0e21e 2568 if (gv)
8ebc5c01 2569 return GvCVu(gv);
601f1833 2570 return NULL;
a0d0e21e
LW		 2571}
2572
2c67934f
NC		 2573/* Nothing in core calls this now, but we can't replace it with a macro and
2574 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2575CV*
2576Perl_get_cv(pTHX_ const char *name, I32 flags)
2577{
7918f24d
NC		 2578 PERL_ARGS_ASSERT_GET_CV;
2579
780a5241
NC		 2580 return get_cvn_flags(name, strlen(name), flags);
2581}
2582
79072805
LW		 2583/* Be sure to refetch the stack pointer after calling these routines. */
2584
954c1994 2585/*
ccfc67b7
JH		 2586
2587=head1 Callback Functions
2588
954c1994
GS		 2589=for apidoc p||call_argv
2590
f0b90de1 2591Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC		 2592with C<argv> (a NULL-terminated array of strings) as arguments. See
2593L<perlcall>.
f0b90de1
SF		 2594
2595Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS		 2596
2597=cut
2598*/
2599
a0d0e21e 2600I32
5aaab254 2601Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2602
8ac85365
NIS		 2603 /* See G_* flags in cop.h */
2604 /* null terminated arg list */
8990e307 2605{
a0d0e21e 2606 dSP;
8990e307 2607
7918f24d
NC		 2608 PERL_ARGS_ASSERT_CALL_ARGV;
2609
924508f0 2610 PUSHMARK(SP);
3dc78631
DM		 2611 while (*argv) {
2612 mXPUSHs(newSVpv(*argv,0));
2613 argv++;
8990e307 2614 }
3dc78631 2615 PUTBACK;
864dbfa3 2616 return call_pv(sub_name, flags);
8990e307
LW		 2617}
2618
954c1994
GS		 2619/*
2620=for apidoc p||call_pv
2621
2622Performs a callback to the specified Perl sub. See L<perlcall>.
2623
2624=cut
2625*/
2626
a0d0e21e 2627I32
864dbfa3 2628Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2629 /* name of the subroutine */
2630 /* See G_* flags in cop.h */
a0d0e21e 2631{
7918f24d
NC		 2632 PERL_ARGS_ASSERT_CALL_PV;
2633
0da0e728 2634 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2635}
2636
954c1994
GS		 2637/*
2638=for apidoc p||call_method
2639
2640Performs a callback to the specified Perl method. The blessed object must
2641be on the stack. See L<perlcall>.
2642
2643=cut
2644*/
2645
a0d0e21e 2646I32
864dbfa3 2647Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2648 /* name of the subroutine */
2649 /* See G_* flags in cop.h */
a0d0e21e 2650{
46ca9bac 2651 STRLEN len;
c106c2be 2652 SV* sv;
7918f24d
NC		 2653 PERL_ARGS_ASSERT_CALL_METHOD;
2654
46ca9bac 2655 len = strlen(methname);
c106c2be
RZ		 2656 sv = flags & G_METHOD_NAMED
2657 ? sv_2mortal(newSVpvn_share(methname, len,0))
2658 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2659
c106c2be 2660 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW		 2661}
2662
2663/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2664/*
2665=for apidoc p||call_sv
2666
2667Performs a callback to the Perl sub whose name is in the SV. See
2668L<perlcall>.
2669
2670=cut
2671*/
2672
a0d0e21e 2673I32
001d637e 2674Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2675 /* See G_* flags in cop.h */
a0d0e21e 2676{
27da23d5 2677 dVAR; dSP;
a0d0e21e 2678 LOGOP myop; /* fake syntax tree node */
b46e009d 2679 METHOP method_op;
aa689395 2680 I32 oldmark;
8ea43dc8 2681 VOL I32 retval = 0;
a0d0e21e 2682 I32 oldscope;
54310121 2683 bool oldcatch = CATCH_GET;
6224f72b 2684 int ret;
c4420975 2685 OP* const oldop = PL_op;
db36c5a1 2686 dJMPENV;
1e422769 2687
7918f24d
NC		 2688 PERL_ARGS_ASSERT_CALL_SV;
2689
a0d0e21e
LW		 2690 if (flags & G_DISCARD) {
2691 ENTER;
2692 SAVETMPS;
2693 }
2f8edad0
NC		 2694 if (!(flags & G_WANT)) {
2695 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2696 */
2697 flags |= G_SCALAR;
2698 }
a0d0e21e 2699
aa689395 2700 Zero(&myop, 1, LOGOP);
f51d4af5 2701 if (!(flags & G_NOARGS))
aa689395 2702 myop.op_flags |= OPf_STACKED;
4f911530 2703 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2704 SAVEOP();
533c011a 2705 PL_op = (OP*)&myop;
aa689395 2706
3280af22 2707 EXTEND(PL_stack_sp, 1);
c106c2be
RZ		 2708 if (!(flags & G_METHOD_NAMED))
2709 *++PL_stack_sp = sv;
aa689395 2710 oldmark = TOPMARK;
3280af22 2711 oldscope = PL_scopestack_ix;
a0d0e21e 2712
3280af22 2713 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2714 /* Handle first BEGIN of -d. */
3280af22 2715 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24 2716 /* Try harder, since this may have been a sighandler, thus
2717 * curstash may be meaningless. */
ea726b52 2718 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2719 && !(flags & G_NODEBUG))
5ff48db8 2720 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2721
c106c2be 2722 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2723 Zero(&method_op, 1, METHOP);
2724 method_op.op_next = (OP*)&myop;
2725 PL_op = (OP*)&method_op;
c106c2be 2726 if ( flags & G_METHOD_NAMED ) {
b46e009d 2727 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2728 method_op.op_type = OP_METHOD_NAMED;
2729 method_op.op_u.op_meth_sv = sv;
c106c2be 2730 } else {
b46e009d 2731 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2732 method_op.op_type = OP_METHOD;
c106c2be
RZ		 2733 }
2734 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2735 myop.op_type = OP_ENTERSUB;
968b3946
GS		 2736 }
2737
312caa8e 2738 if (!(flags & G_EVAL)) {
0cdb2077 2739 CATCH_SET(TRUE);
d6f07c05 2740 CALL_BODY_SUB((OP*)&myop);
312caa8e 2741 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2742 CATCH_SET(oldcatch);
312caa8e
CS		 2743 }
2744 else {
d78bda3d 2745 myop.op_other = (OP*)&myop;
3280af22 2746 PL_markstack_ptr--;
edb2152a 2747 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2748 PL_markstack_ptr++;
a0d0e21e 2749
14dd3ad8 2750 JMPENV_PUSH(ret);
edb2152a 2751
6224f72b
GS		 2752 switch (ret) {
2753 case 0:
14dd3ad8 2754 redo_body:
d6f07c05 2755 CALL_BODY_SUB((OP*)&myop);
312caa8e 2756 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2757 if (!(flags & G_KEEPERR)) {
ab69dbc2 2758 CLEAR_ERRSV();
8433848b 2759 }
a0d0e21e 2760 break;
6224f72b 2761 case 1:
f86702cc 2762 STATUS_ALL_FAILURE;
924ba076 2763 /* FALLTHROUGH */
6224f72b 2764 case 2:
a0d0e21e 2765 /* my_exit() was called */
03d9f026 2766 SET_CURSTASH(PL_defstash);
a0d0e21e 2767 FREETMPS;
14dd3ad8 2768 JMPENV_POP;
f86702cc 2769 my_exit_jump();
e5964223 2770 NOT_REACHED; /* NOTREACHED */
6224f72b 2771 case 3:
3280af22 2772 if (PL_restartop) {
febb3a6d 2773 PL_restartjmpenv = NULL;
533c011a 2774 PL_op = PL_restartop;
3280af22 2775 PL_restartop = 0;
312caa8e 2776 goto redo_body;
a0d0e21e 2777 }
3280af22 2778 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2779 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2780 retval = 0;
2781 else {
2782 retval = 1;
3280af22 2783 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2784 }
312caa8e 2785 break;
a0d0e21e 2786 }
a0d0e21e 2787
edb2152a
NC		 2788 if (PL_scopestack_ix > oldscope)
2789 delete_eval_scope();
14dd3ad8 2790 JMPENV_POP;
a0d0e21e 2791 }
1e422769 2792
a0d0e21e 2793 if (flags & G_DISCARD) {
3280af22 2794 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2795 retval = 0;
2796 FREETMPS;
2797 LEAVE;
2798 }
533c011a 2799 PL_op = oldop;
a0d0e21e
LW		 2800 return retval;
2801}
2802
6e72f9df 2803/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2804
954c1994
GS		 2805/*
2806=for apidoc p||eval_sv
2807
72d33970
FC		 2808Tells Perl to C<eval> the string in the SV. It supports the same flags
2809as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS		 2810
2811=cut
2812*/
2813
a0d0e21e 2814I32
864dbfa3 2815Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2816
8ac85365 2817 /* See G_* flags in cop.h */
a0d0e21e 2818{
97aff369 2819 dVAR;
924508f0 2820 dSP;
a0d0e21e 2821 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP		 2822 VOL I32 oldmark = SP - PL_stack_base;
2823 VOL I32 retval = 0;
6224f72b 2824 int ret;
c4420975 2825 OP* const oldop = PL_op;
db36c5a1 2826 dJMPENV;
84902520 2827
7918f24d
NC		 2828 PERL_ARGS_ASSERT_EVAL_SV;
2829
4633a7c4
LW		 2830 if (flags & G_DISCARD) {
2831 ENTER;
2832 SAVETMPS;
2833 }
2834
462e5cf6 2835 SAVEOP();
533c011a 2836 PL_op = (OP*)&myop;
5ff48db8 2837 Zero(&myop, 1, UNOP);
3280af22
NIS		 2838 EXTEND(PL_stack_sp, 1);
2839 *++PL_stack_sp = sv;
79072805 2840
4633a7c4
LW		 2841 if (!(flags & G_NOARGS))
2842 myop.op_flags = OPf_STACKED;
6e72f9df 2843 myop.op_type = OP_ENTEREVAL;
4f911530 2844 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df 2845 if (flags & G_KEEPERR)
2846 myop.op_flags |= OPf_SPECIAL;
a1941760
DM		 2847
2848 if (flags & G_RE_REPARSING)
2849 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2850
dedbcade
DM		 2851 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2852 * before a PUSHEVAL, which corrupts the stack after a croak */
2853 TAINT_PROPER("eval_sv()");
2854
14dd3ad8 2855 JMPENV_PUSH(ret);
6224f72b
GS		 2856 switch (ret) {
2857 case 0:
14dd3ad8 2858 redo_body:
2ba65d5f
DM		 2859 if (PL_op == (OP*)(&myop)) {
2860 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2861 if (!PL_op)
2862 goto fail; /* failed in compilation */
2863 }
4aca2f62 2864 CALLRUNOPS(aTHX);
312caa8e 2865 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2866 if (!(flags & G_KEEPERR)) {
ab69dbc2 2867 CLEAR_ERRSV();
8433848b 2868 }
4633a7c4 2869 break;
6224f72b 2870 case 1:
f86702cc 2871 STATUS_ALL_FAILURE;
924ba076 2872 /* FALLTHROUGH */
6224f72b 2873 case 2:
4633a7c4 2874 /* my_exit() was called */
03d9f026 2875 SET_CURSTASH(PL_defstash);
4633a7c4 2876 FREETMPS;
14dd3ad8 2877 JMPENV_POP;
f86702cc 2878 my_exit_jump();
e5964223 2879 NOT_REACHED; /* NOTREACHED */
6224f72b 2880 case 3:
3280af22 2881 if (PL_restartop) {
febb3a6d 2882 PL_restartjmpenv = NULL;
533c011a 2883 PL_op = PL_restartop;
3280af22 2884 PL_restartop = 0;
312caa8e 2885 goto redo_body;
4633a7c4 2886 }
4aca2f62 2887 fail:
3280af22 2888 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2889 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 2890 retval = 0;
2891 else {
2892 retval = 1;
3280af22 2893 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2894 }
312caa8e 2895 break;
4633a7c4
LW		 2896 }
2897
14dd3ad8 2898 JMPENV_POP;
4633a7c4 2899 if (flags & G_DISCARD) {
3280af22 2900 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 2901 retval = 0;
2902 FREETMPS;
2903 LEAVE;
2904 }
533c011a 2905 PL_op = oldop;
4633a7c4
LW		 2906 return retval;
2907}
2908
954c1994
GS		 2909/*
2910=for apidoc p||eval_pv
2911
422791e4 2912Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS		 2913
2914=cut
2915*/
2916
137443ea 2917SV*
864dbfa3 2918Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2919{
137443ea 2920 SV* sv = newSVpv(p, 0);
2921
7918f24d
NC		 2922 PERL_ARGS_ASSERT_EVAL_PV;
2923
864dbfa3 2924 eval_sv(sv, G_SCALAR);
137443ea 2925 SvREFCNT_dec(sv);
2926
ed1786ad
DD		 2927 {
2928 dSP;
2929 sv = POPs;
2930 PUTBACK;
2931 }
137443ea 2932
eed484f9
DD		 2933 /* just check empty string or undef? */
2934 if (croak_on_error) {
2935 SV * const errsv = ERRSV;
2936 if(SvTRUE_NN(errsv))
2937 /* replace with croak_sv? */
2938 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2939 }
137443ea 2940
2941 return sv;
2942}
2943
4633a7c4
LW		 2944/* Require a module. */
2945
954c1994 2946/*
ccfc67b7
JH		 2947=head1 Embedding Functions
2948
954c1994
GS		 2949=for apidoc p||require_pv
2950
7d3fb230
BS		 2951Tells Perl to C<require> the file named by the string argument. It is
2952analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2953implemented that way; consider using load_module instead.
954c1994 2954
7d3fb230 2955=cut */
954c1994 2956
4633a7c4 2957void
864dbfa3 2958Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2959{
d3acc0f7 2960 dSP;
97aff369 2961 SV* sv;
7918f24d
NC		 2962
2963 PERL_ARGS_ASSERT_REQUIRE_PV;
2964
e788e7d3 2965 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC		 2966 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2967 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2968 POPSTACK;
79072805
LW		 2969}
2970
76e3520e 2971STATIC void
b6f82619 2972S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2973{
ab821d7f 2974 /* This message really ought to be max 23 lines.
75c72d73 2975 * Removed -h because the user already knows that option. Others? */
fb73857a 2976
1566c39d
NC		 2977 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2978 minimum of 509 character string literals. */
27da23d5 2979 static const char * const usage_msg[] = {
1566c39d
NC		 2980" -0[octal] specify record separator (\\0, if no argument)\n"
2981" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2982" -C[number/list] enables the listed Unicode features\n"
2983" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2984" -d[:debugger] run program under debugger\n"
2985" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2986" -e program one line of program (several -e's allowed, omit programfile)\n"
2987" -E program like -e, but enables all optional features\n"
2988" -f don't do $sitelib/sitecustomize.pl at startup\n"
2989" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2990" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2991" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2992" -l[octal] enable line ending processing, specifies line terminator\n"
2993" -[mM][-]module execute \"use/no module...\" before executing program\n"
2994" -n assume \"while (<>) { ... }\" loop around program\n"
2995" -p assume loop like -n but print line also, like sed\n"
2996" -s enable rudimentary parsing for switches after programfile\n"
2997" -S look for programfile using PATH environment variable\n",
2998" -t enable tainting warnings\n"
2999" -T enable tainting checks\n"
3000" -u dump core after parsing program\n"
3001" -U allow unsafe operations\n"
3002" -v print version, patchlevel and license\n"
3003" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3004" -w enable many useful warnings\n"
1566c39d
NC		 3005" -W enable all warnings\n"
3006" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3007" -X disable all warnings\n"
3008" \n"
3009"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a 3010NULL
3011};
27da23d5 3012 const char * const *p = usage_msg;
1566c39d 3013 PerlIO *out = PerlIO_stdout();
fb73857a 3014
1566c39d
NC		 3015 PerlIO_printf(out,
3016 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3017 PL_origargv[0]);
fb73857a 3018 while (*p)
1566c39d 3019 PerlIO_puts(out, *p++);
b6f82619 3020 my_exit(0);
4633a7c4
LW		 3021}
3022
b4ab917c
DM		 3023/* convert a string of -D options (or digits) into an int.
3024 * sets *s to point to the char after the options */
3025
3026#ifdef DEBUGGING
3027int
e1ec3a88 3028Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3029{
27da23d5 3030 static const char * const usage_msgd[] = {
651b8f1a
NC		 3031 " Debugging flag values: (see also -d)\n"
3032 " p Tokenizing and parsing (with v, displays parse stack)\n"
3033 " s Stack snapshots (with v, displays all stacks)\n"
3034 " l Context (loop) stack processing\n"
3035 " t Trace execution\n"
3036 " o Method and overloading resolution\n",
3037 " c String/numeric conversions\n"
3038 " P Print profiling info, source file input state\n"
3039 " m Memory and SV allocation\n"
3040 " f Format processing\n"
3041 " r Regular expression parsing and execution\n"
3042 " x Syntax tree dump\n",
3043 " u Tainting checks\n"
3044 " H Hash dump -- usurps values()\n"
3045 " X Scratchpad allocation\n"
3046 " D Cleaning up\n"
56967202 3047 " S Op slab allocation\n"
651b8f1a
NC		 3048 " T Tokenising\n"
3049 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3050 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3051 " v Verbose: use in conjunction with other flags\n"
3052 " C Copy On Write\n"
3053 " A Consistency checks on internal structures\n"
3054 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3055 " M trace smart match resolution\n"
3056 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3057 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC		 3058 NULL
3059 };
22ff3130 3060 UV uv = 0;
7918f24d
NC		 3061
3062 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3063
b4ab917c
DM		 3064 if (isALPHA(**s)) {
3065 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3066 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3067
0eb30aeb 3068 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3069 const char * const d = strchr(debopts,**s);
b4ab917c 3070 if (d)
22ff3130 3071 uv |= 1 << (d - debopts);
b4ab917c 3072 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 3073 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3074 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 3075 }
3076 }
e6e64d9b 3077 else if (isDIGIT(**s)) {
96e440d2 3078 const char* e;
22ff3130 3079 if (grok_atoUV(*s, &uv, &e))
96e440d2 3080 *s = e;
0eb30aeb 3081 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3082 }
ddcf8bc1 3083 else if (givehelp) {
06e869a4 3084 const char *const *p = usage_msgd;
651b8f1a 3085 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3086 }
22ff3130 3087 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM		 3088}
3089#endif
3090
79072805
LW		 3091/* This routine handles any switches that can be given during run */
3092
c7030b81
NC		 3093const char *
3094Perl_moreswitches(pTHX_ const char *s)
79072805 3095{
27da23d5 3096 dVAR;
84c133a0 3097 UV rschar;
0544e6df 3098 const char option = *s; /* used to remember option in -m/-M code */
79072805 3099
7918f24d
NC		 3100 PERL_ARGS_ASSERT_MORESWITCHES;
3101
79072805
LW		 3102 switch (*s) {
3103 case '0':
a863c7d1 3104 {
f2095865 3105 I32 flags = 0;
a3b680e6 3106 STRLEN numlen;
f2095865
JH		 3107
3108 SvREFCNT_dec(PL_rs);
3109 if (s[1] == 'x' && s[2]) {
a3b680e6 3110 const char *e = s+=2;
f2095865
JH		 3111 U8 *tmps;
3112
a3b680e6
AL		 3113 while (*e)
3114 e++;
f2095865
JH		 3115 numlen = e - s;
3116 flags = PERL_SCAN_SILENT_ILLDIGIT;
3117 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3118 if (s + numlen < e) {
3119 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3120 numlen = 0;
3121 s--;
3122 }
396482e1 3123 PL_rs = newSVpvs("");
c5661c80 3124 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH		 3125 tmps = (U8*)SvPVX(PL_rs);
3126 uvchr_to_utf8(tmps, rschar);
3127 SvCUR_set(PL_rs, UNISKIP(rschar));
3128 SvUTF8_on(PL_rs);
3129 }
3130 else {
3131 numlen = 4;
3132 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3133 if (rschar & ~((U8)~0))
3134 PL_rs = &PL_sv_undef;
3135 else if (!rschar && numlen >= 2)
396482e1 3136 PL_rs = newSVpvs("");
f2095865
JH		 3137 else {
3138 char ch = (char)rschar;
3139 PL_rs = newSVpvn(&ch, 1);
3140 }
3141 }
64ace3f8 3142 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3143 return s + numlen;
a863c7d1 3144 }
46487f74 3145 case 'C':
a05d7ebb 3146 s++;
dd374669 3147 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 3148 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3149 PL_utf8cache = -1;
46487f74 3150 return s;
2304df62 3151 case 'F':
5fc691f1 3152 PL_minus_a = TRUE;
3280af22 3153 PL_minus_F = TRUE;
24ffa309 3154 PL_minus_n = TRUE;
ebce5377
RGS		 3155 PL_splitstr = ++s;
3156 while (*s && !isSPACE(*s)) ++s;
e49e380e 3157 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3158 return s;
79072805 3159 case 'a':
3280af22 3160 PL_minus_a = TRUE;
24ffa309 3161 PL_minus_n = TRUE;
79072805
LW		 3162 s++;
3163 return s;
3164 case 'c':
3280af22 3165 PL_minus_c = TRUE;
79072805
LW		 3166 s++;
3167 return s;
3168 case 'd':
f20b2998 3169 forbid_setid('d', FALSE);
4633a7c4 3170 s++;
2cbb2ee1
RGS		 3171
3172 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3173 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS		 3174 ++s;
3175 my_setenv("PERL5DB_THREADED", "1");
3176 }
3177
70c94a19
RR		 3178 /* The following permits -d:Mod to accepts arguments following an =
3179 in the fashion that -MSome::Mod does. */
3180 if (*s == ':' || *s == '=') {
b19934fb
NC		 3181 const char *start;
3182 const char *end;
3183 SV *sv;
3184
3185 if (*++s == '-') {
3186 ++s;
3187 sv = newSVpvs("no Devel::");
3188 } else {
3189 sv = newSVpvs("use Devel::");
3190 }
3191
3192 start = s;
3193 end = s + strlen(s);
f85893a1 3194
b19934fb 3195 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3196 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3197 if (*s != '=')
f85893a1 3198 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3199 else {
3200 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3201 /* Don't use NUL as q// delimiter here, this string goes in the
3202 * environment. */
3203 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3204 }
f85893a1 3205 s = end;
184f32ec 3206 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3207 SvREFCNT_dec(sv);
4633a7c4 3208 }
ed094faf 3209 if (!PL_perldb) {
3280af22 3210 PL_perldb = PERLDB_ALL;
a0d0e21e 3211 init_debugger();
ed094faf 3212 }
79072805
LW		 3213 return s;
3214 case 'D':
0453d815 3215 {
79072805 3216#ifdef DEBUGGING
f20b2998 3217 forbid_setid('D', FALSE);
b4ab917c 3218 s++;
dd374669 3219 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3220#else /* !DEBUGGING */
0453d815 3221 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3222 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3223 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3224 for (s++; isWORDCHAR(*s); s++) ;
79072805 3225#endif
79072805 3226 return s;
2b5060ae 3227 NOT_REACHED; /* NOTREACHED */
0453d815 3228 }
4633a7c4 3229 case 'h':
b6f82619 3230 usage();
2b5060ae
DM		 3231 NOT_REACHED; /* NOTREACHED */
3232
79072805 3233 case 'i':
43c5f42d 3234 Safefree(PL_inplace);
c030f24b
GH		 3235#if defined(__CYGWIN__) /* do backup extension automagically */
3236 if (*(s+1) == '\0') {
c86a4f2e 3237 PL_inplace = savepvs(".bak");
c030f24b
GH		 3238 return s+1;
3239 }
3240#endif /* __CYGWIN__ */
5ef5d758 3241 {
d4c19fe8 3242 const char * const start = ++s;
5ef5d758
NC		 3243 while (*s && !isSPACE(*s))
3244 ++s;
3245
3246 PL_inplace = savepvn(start, s - start);
3247 }
7b8d334a 3248 if (*s) {
5ef5d758 3249 ++s;
7b8d334a 3250 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3251 s++;
7b8d334a 3252 }
fb73857a 3253 return s;
4e49a025 3254 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3255 forbid_setid('I', FALSE);
fb73857a 3256 ++s;
3257 while (*s && isSPACE(*s))
3258 ++s;
3259 if (*s) {
c7030b81 3260 const char *e, *p;
0df16ed7
GS		 3261 p = s;
3262 /* ignore trailing spaces (possibly followed by other switches) */
3263 do {
3264 for (e = p; *e && !isSPACE(*e); e++) ;
3265 p = e;
3266 while (isSPACE(*p))
3267 p++;
3268 } while (*p && *p != '-');
55b4bc1c 3269 incpush(s, e-s,
e28f3139 3270 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3271 s = p;
3272 if (*s == '-')
3273 s++;
79072805
LW		 3274 }
3275 else
a67e862a 3276 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3277 return s;
79072805 3278 case 'l':
3280af22 3279 PL_minus_l = TRUE;
79072805 3280 s++;
7889fe52
NIS		 3281 if (PL_ors_sv) {
3282 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3283 PL_ors_sv = NULL;
7889fe52 3284 }
79072805 3285 if (isDIGIT(*s)) {
53305cf1 3286 I32 flags = 0;
a3b680e6 3287 STRLEN numlen;
396482e1 3288 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3289 numlen = 3 + (*s == '0');
3290 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3291 s += numlen;
3292 }
3293 else {
8bfdd7d9 3294 if (RsPARA(PL_rs)) {
396482e1 3295 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3296 }
3297 else {
8bfdd7d9 3298 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3299 }
79072805
LW		 3300 }
3301 return s;
1a30305b 3302 case 'M':
f20b2998 3303 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3304 /* FALLTHROUGH */
1a30305b 3305 case 'm':
f20b2998 3306 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3307 if (*++s) {
c7030b81 3308 const char *start;
b64cb68c 3309 const char *end;
11343788 3310 SV *sv;
e1ec3a88 3311 const char *use = "use ";
0544e6df 3312 bool colon = FALSE;
a5f75d66 3313 /* -M-foo == 'no foo' */
d0043bd1
NC		 3314 /* Leading space on " no " is deliberate, to make both
3315 possibilities the same length. */
3316 if (*s == '-') { use = " no "; ++s; }
3317 sv = newSVpvn(use,4);
a5f75d66 3318 start = s;
1a30305b 3319 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3320 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB		 3321 if( *s++ == ':' ) {
3322 if( *s == ':' )
3323 s++;
3324 else
3325 colon = TRUE;
3326 }
3327 }
3328 if (s == start)
3329 Perl_croak(aTHX_ "Module name required with -%c option",
3330 option);
3331 if (colon)
3332 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3333 "contains single ':'",
63da6837 3334 (int)(s - start), start, option);
b64cb68c 3335 end = s + strlen(s);
c07a80fd 3336 if (*s != '=') {
b64cb68c 3337 sv_catpvn(sv, start, end - start);
0544e6df 3338 if (option == 'm') {
c07a80fd 3339 if (*s != '\0')
cea2e8a9 3340 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3341 sv_catpvs( sv, " ()");
c07a80fd 3342 }
3343 } else {
11343788 3344 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3345 /* Use NUL as q''-delimiter. */
3346 sv_catpvs(sv, " split(/,/,q\0");
3347 ++s;
3348 sv_catpvn(sv, s, end - s);
396482e1 3349 sv_catpvs(sv, "\0)");
c07a80fd 3350 }
b64cb68c 3351 s = end;
29a861e7 3352 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b 3353 }
3354 else
0544e6df 3355 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3356 return s;
79072805 3357 case 'n':
3280af22 3358 PL_minus_n = TRUE;
79072805
LW		 3359 s++;
3360 return s;
3361 case 'p':
3280af22 3362 PL_minus_p = TRUE;
79072805
LW		 3363 s++;
3364 return s;
3365 case 's':
f20b2998 3366 forbid_setid('s', FALSE);
3280af22 3367 PL_doswitches = TRUE;
79072805
LW		 3368 s++;
3369 return s;
6537fe72 3370 case 't':
27a6968b 3371 case 'T':
dc6d7f5c 3372#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3373 /* silently ignore */
dc6d7f5c 3374#elif defined(NO_TAINT_SUPPORT)
3231f579 3375 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
S		 3376 "Cowardly refusing to run with -t or -T flags");
3377#else
3378 if (!TAINTING_get)
27a6968b 3379 TOO_LATE_FOR(*s);
284167a5 3380#endif
6537fe72 3381 s++;
463ee0b2 3382 return s;
79072805 3383 case 'u':
3280af22 3384 PL_do_undump = TRUE;
79072805
LW		 3385 s++;
3386 return s;
3387 case 'U':
3280af22 3388 PL_unsafe = TRUE;
79072805
LW		 3389 s++;
3390 return s;
3391 case 'v':
c4bc78d9
NC		 3392 minus_v();
3393 case 'w':
3394 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3395 PL_dowarn |= G_WARN_ON;
3396 }
3397 s++;
3398 return s;
3399 case 'W':
3400 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3401 if (!specialWARN(PL_compiling.cop_warnings))
3402 PerlMemShared_free(PL_compiling.cop_warnings);
3403 PL_compiling.cop_warnings = pWARN_ALL ;
3404 s++;
3405 return s;
3406 case 'X':
3407 PL_dowarn = G_WARN_ALL_OFF;
3408 if (!specialWARN(PL_compiling.cop_warnings))
3409 PerlMemShared_free(PL_compiling.cop_warnings);
3410 PL_compiling.cop_warnings = pWARN_NONE ;
3411 s++;
3412 return s;
3413 case '*':
3414 case ' ':
3415 while( *s == ' ' )
3416 ++s;
3417 if (s[0] == '-') /* Additional switches on #! line. */
3418 return s+1;
3419 break;
3420 case '-':
3421 case 0:
3422#if defined(WIN32) || !defined(PERL_STRICT_CR)
3423 case '\r':
3424#endif
3425 case '\n':
3426 case '\t':
3427 break;
3428#ifdef ALTERNATE_SHEBANG
3429 case 'S': /* OS/2 needs -S on "extproc" line. */
3430 break;
3431#endif
4bb78d63
CB		 3432 case 'e': case 'f': case 'x': case 'E':
3433#ifndef ALTERNATE_SHEBANG
3434 case 'S':
3435#endif
3436 case 'V':
c4bc78d9 3437 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC		 3438 default:
3439 Perl_croak(aTHX_
3440 "Unrecognized switch: -%.1s (-h will show valid options)",s
3441 );
c4bc78d9
NC		 3442 }
3443 return NULL;
3444}
3445
3446
3447STATIC void
3448S_minus_v(pTHX)
3449{
fc3381af 3450 PerlIO * PIO_stdout;
46807d8e 3451 {
709aee94
DD		 3452 const char * const level_str = "v" PERL_VERSION_STRING;
3453 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3454#ifdef PERL_PATCHNUM
709aee94 3455 SV* level;
23d483e2 3456# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3457 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3458# else
709aee94 3459 static const char num [] = PERL_PATCHNUM;
23d483e2 3460# endif
fc3381af 3461 {
709aee94
DD		 3462 const STRLEN num_len = sizeof(num)-1;
3463 /* A very advanced compiler would fold away the strnEQ
3464 and this whole conditional, but most (all?) won't do it.
3465 SV level could also be replaced by with preprocessor
3466 catenation.
3467 */
3468 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3469 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3470 of the interp so it might contain format characters
3471 */
3472 level = newSVpvn(num, num_len);
fc3381af 3473 } else {
709aee94 3474 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3475 }
46807d8e 3476 }
709aee94
DD		 3477#else
3478 SV* level = newSVpvn(level_str, level_len);
3479#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD		 3480 PIO_stdout = PerlIO_stdout();
3481 PerlIO_printf(PIO_stdout,
ded326e4
DG		 3482 "\nThis is perl " STRINGIFY(PERL_REVISION)
3483 ", version " STRINGIFY(PERL_VERSION)
3484 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3485 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3486 );
709aee94 3487 SvREFCNT_dec_NN(level);
46807d8e 3488 }
fb73857a 3489#if defined(LOCAL_PATCH_COUNT)
3490 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3491 PerlIO_printf(PIO_stdout,
b0e47665
GS		 3492 "\n(with %d registered patch%s, "
3493 "see perl -V for more detail)",
bb7a0f54 3494 LOCAL_PATCH_COUNT,
b0e47665 3495 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3496#endif
1a30305b 3497
fc3381af 3498 PerlIO_printf(PIO_stdout,
a6f9dd1e 3499 "\n\nCopyright 1987-2015, Larry Wall\n");
79072805 3500#ifdef MSDOS
fc3381af 3501 PerlIO_printf(PIO_stdout,
b0e47665 3502 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff 3503#endif
3504#ifdef DJGPP
fc3381af 3505 PerlIO_printf(PIO_stdout,
b0e47665
GS		 3506 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3507 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3508#endif
79072805 3509#ifdef OS2
fc3381af 3510 PerlIO_printf(PIO_stdout,
b0e47665 3511 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3512 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3513#endif
9d116dd7 3514#ifdef OEMVS
fc3381af 3515 PerlIO_printf(PIO_stdout,
b0e47665 3516 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3517#endif
495c5fdc 3518#ifdef __VOS__
fc3381af 3519 PerlIO_printf(PIO_stdout,
c0fcb8c5 3520 "Stratus OpenVOS port by Paul.Green@stratus.com, 1997-2013\n");
495c5fdc 3521#endif
a1a0e61e 3522#ifdef POSIX_BC
fc3381af 3523 PerlIO_printf(PIO_stdout,
b0e47665 3524 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3525#endif
e1caacb4 3526#ifdef UNDER_CE
fc3381af
DD		 3527 PerlIO_printf(PIO_stdout,
3528 "WINCE port by Rainer Keuchel, 2001-2002\n"
3529 "Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH		 3530 wce_hitreturn();
3531#endif
a0fd4948 3532#ifdef __SYMBIAN32__
fc3381af 3533 PerlIO_printf(PIO_stdout,
27da23d5
JH		 3534 "Symbian port by Nokia, 2004-2005\n");
3535#endif
baed7233
DL		 3536#ifdef BINARY_BUILD_NOTICE
3537 BINARY_BUILD_NOTICE;
3538#endif
fc3381af 3539 PerlIO_printf(PIO_stdout,
b0e47665 3540 "\n\
79072805 3541Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3542GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3543Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3544this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3545Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3546 my_exit(0);
79072805
LW		 3547}
3548
3549/* compliments of Tom Christiansen */
3550
3551/* unexec() can be found in the Gnu emacs distribution */
ee580363 3552/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805 3553
25bbd826
CB		 3554#ifdef VMS
3555#include <lib$routines.h>
3556#endif
3557
79072805 3558void
864dbfa3 3559Perl_my_unexec(pTHX)
79072805
LW		 3560{
3561#ifdef UNEXEC
b37c2d43
AL		 3562 SV * prog = newSVpv(BIN_EXP, 0);
3563 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3564 int status = 1;
79072805
LW		 3565 extern int etext;
3566
396482e1 3567 sv_catpvs(prog, "/perl");
396482e1 3568 sv_catpvs(file, ".perldump");
79072805 3569
ee580363
GS		 3570 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3571 /* unexec prints msg to stderr in case of failure */
6ad3d225 3572 PerlProc_exit(status);
79072805 3573#else
ddeaf645 3574 PERL_UNUSED_CONTEXT;
a5f75d66 3575# ifdef VMS
a5f75d66 3576 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7 3577# elif defined(WIN32) || defined(__CYGWIN__)
ddeaf645 3578 Perl_croak_nocontext("dump is not supported");
aa689395 3579# else
79072805 3580 ABORT(); /* for use with undump */
aa689395 3581# endif
a5f75d66 3582#endif
79072805
LW		 3583}
3584
cb68f92d
GS		 3585/* initialize curinterp */
3586STATIC void
cea2e8a9 3587S_init_interp(pTHX)
cb68f92d 3588{
acfe0abc 3589#ifdef MULTIPLICITY
115ff745
NC		 3590# define PERLVAR(prefix,var,type)
3591# define PERLVARA(prefix,var,n,type)
acfe0abc 3592# if defined(PERL_IMPLICIT_CONTEXT)
115ff745
NC		 3593# define PERLVARI(prefix,var,type,init) aTHX->prefix##var = init;
3594# define PERLVARIC(prefix,var,type,init) aTHX->prefix##var = init;
3967c732 3595# else
115ff745
NC		 3596# define PERLVARI(prefix,var,type,init) PERL_GET_INTERP->var = init;
3597# define PERLVARIC(prefix,var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3598# endif
acfe0abc 3599# include "intrpvar.h"
acfe0abc
GS		 3600# undef PERLVAR
3601# undef PERLVARA
3602# undef PERLVARI
3603# undef PERLVARIC
3604#else
115ff745
NC		 3605# define PERLVAR(prefix,var,type)
3606# define PERLVARA(prefix,var,n,type)
3607# define PERLVARI(prefix,var,type,init) PL_##var = init;
3608# define PERLVARIC(prefix,var,type,init) PL_##var = init;
acfe0abc 3609# include "intrpvar.h"
acfe0abc
GS		 3610# undef PERLVAR
3611# undef PERLVARA
3612# undef PERLVARI
3613# undef PERLVARIC
cb68f92d
GS		 3614#endif
3615
cb68f92d
GS		 3616}
3617
76e3520e 3618STATIC void
cea2e8a9 3619S_init_main_stash(pTHX)
79072805 3620{
463ee0b2 3621 GV *gv;
6e72f9df 3622
03d9f026 3623 PL_curstash = PL_defstash = (HV *)SvREFCNT_inc_simple_NN(newHV());
23579a14
NC		 3624 /* We know that the string "main" will be in the global shared string
3625 table, so it's a small saving to use it rather than allocate another
3626 8 bytes. */
18916d0d 3627 PL_curstname = newSVpvs_share("main");
fafc274c 3628 gv = gv_fetchpvs("main::", GV_ADD|GV_NOTQUAL, SVt_PVHV);
23579a14
NC		 3629 /* If we hadn't caused another reference to "main" to be in the shared
3630 string table above, then it would be worth reordering these two,
3631 because otherwise all we do is delete "main" from it as a consequence
3632 of the SvREFCNT_dec, only to add it again with hv_name_set */
adbc6bb1 3633 SvREFCNT_dec(GvHV(gv));
23579a14 3634 hv_name_set(PL_defstash, "main", 4, 0);
85fbaab2 3635 GvHV(gv) = MUTABLE_HV(SvREFCNT_inc_simple(PL_defstash));
463ee0b2 3636 SvREADONLY_on(gv);
fafc274c
NC		 3637 PL_incgv = gv_HVadd(gv_AVadd(gv_fetchpvs("INC", GV_ADD|GV_NOTQUAL,
3638 SVt_PVAV)));
5a5094bd 3639 SvREFCNT_inc_simple_void(PL_incgv); /* Don't allow it to be freed */
3280af22 3640 GvMULTI_on(PL_incgv);
fafc274c 3641 PL_hintgv = gv_fetchpvs("\010", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^H */
4639d557 3642 SvREFCNT_inc_simple_void(PL_hintgv);
3280af22 3643 GvMULTI_on(PL_hintgv);
fafc274c 3644 PL_defgv = gv_fetchpvs("_", GV_ADD|GV_NOTQUAL, SVt_PVAV);
5a5094bd 3645 SvREFCNT_inc_simple_void(PL_defgv);
d456e3f4 3646 PL_errgv = gv_fetchpvs("@", GV_ADD|GV_NOTQUAL, SVt_PV);
5a5094bd 3647 SvREFCNT_inc_simple_void(PL_errgv);
3280af22 3648 GvMULTI_on(PL_errgv);
fafc274c 3649 PL_replgv = gv_fetchpvs("\022", GV_ADD|GV_NOTQUAL, SVt_PV); /* ^R */
475b1e90 3650 SvREFCNT_inc_simple_void(PL_replgv);
3280af22 3651 GvMULTI_on(PL_replgv);
cea2e8a9 3652 (void)Perl_form(aTHX_ "%240s",""); /* Preallocate temp - for immediate signals. */
c69033f2 3653#ifdef PERL_DONT_CREATE_GVSV
689fbe18 3654 (void)gv_SVadd(PL_errgv);
c69033f2 3655#endif
38a03e6e 3656 sv_grow(ERRSV, 240); /* Preallocate - for immediate signals. */
ab69dbc2 3657 CLEAR_ERRSV();
03d9f026 3658 SET_CURSTASH(PL_defstash);
11faa288 3659 CopSTASH_set(&PL_compiling, PL_defstash);
5c1737d1
NC		 3660 PL_debstash = GvHV(gv_fetchpvs("DB::", GV_ADDMULTI, SVt_PVHV));
3661 PL_globalstash = GvHV(gv_fetchpvs("CORE::GLOBAL::", GV_ADDMULTI,
3662 SVt_PVHV));
4633a7c4 3663 /* We must init $/ before switches are processed. */
64ace3f8 3664 sv_setpvs(get_sv("/", GV_ADD), "\n");
79072805
LW		 3665}
3666
8d113837
NC		 3667STATIC PerlIO *
3668S_open_script(pTHX_ const char *scriptname, bool dosearch, bool *suidscript)
79072805 3669{
fdf5d70d 3670 int fdscript = -1;
8d113837 3671 PerlIO *rsfp = NULL;
1dfef69b 3672 Stat_t tmpstatbuf;
375ed12a 3673 int fd;
1b24ed4b 3674
7918f24d
NC		 3675 PERL_ARGS_ASSERT_OPEN_SCRIPT;
3676
3280af22 3677 if (PL_e_script) {
8afc33d6 3678 PL_origfilename = savepvs("-e");
96436eeb 3679 }
6c4ab083 3680 else {
22ff3130
HS		 3681 const char *s;
3682 UV uv;
6c4ab083 3683 /* if find_script() returns, it returns a malloc()-ed value */
dd374669 3684 scriptname = PL_origfilename = find_script(scriptname, dosearch, NULL, 1);
6c4ab083 3685
22ff3130
HS		 3686 if (strnEQ(scriptname, "/dev/fd/", 8)
3687 && isDIGIT(scriptname[8])
3688 && grok_atoUV(scriptname + 8, &uv, &s)
3689 && uv <= PERL_INT_MAX
3690 ) {
3691 fdscript = (int)uv;
6c4ab083 3692 if (*s) {
ae3f3efd
PS		 3693 /* PSz 18 Feb 04
3694 * Tell apart "normal" usage of fdscript, e.g.
3695 * with bash on FreeBSD:
3696 * perl <( echo '#!perl -DA'; echo 'print "$0\n"')
3697 * from usage in suidperl.
3698 * Does any "normal" usage leave garbage after the number???
3699 * Is it a mistake to use a similar /dev/fd/ construct for
3700 * suidperl?
3701 */
f20b2998 3702 *suidscript = TRUE;
ae3f3efd
PS		 3703 /* PSz 20 Feb 04
3704 * Be supersafe and do some sanity-checks.
3705 * Still, can we be sure we got the right thing?
3706 */
3707 if (*s != '/') {
3708 Perl_croak(aTHX_ "Wrong syntax (suid) fd script name \"%s\"\n", s);
3709 }
3710 if (! *(s+1)) {
3711 Perl_croak(aTHX_ "Missing (suid) fd script name\n");
3712 }
6c4ab083 3713 scriptname = savepv(s + 1);
3280af22 3714 Safefree(PL_origfilename);
dd374669 3715 PL_origfilename = (char *)scriptname;
6c4ab083
GS		 3716 }
3717 }
3718 }
3719
05ec9bb3 3720 CopFILE_free(PL_curcop);
57843af0 3721 CopFILE_set(PL_curcop, PL_origfilename);
770526c1 3722 if (*PL_origfilename == '-' && PL_origfilename[1] == '\0')
dd374669 3723 scriptname = (char *)"";
fdf5d70d 3724 if (fdscript >= 0) {
8d113837 3725 rsfp = PerlIO_fdopen(fdscript,PERL_SCRIPT_MODE);
96436eeb 3726 }
79072805 3727 else if (!*scriptname) {
cdd8118e 3728 forbid_setid(0, *suidscript);
c0b3891a 3729 return NULL;
79072805 3730 }
96436eeb 3731 else {
9c12f1e5
RGS		 3732#ifdef FAKE_BIT_BUCKET
3733 /* This hack allows one not to have /dev/null (or BIT_BUCKET as it
3734 * is called) and still have the "-e" work. (Believe it or not,
3735 * a /dev/null is required for the "-e" to work because source
3736 * filter magic is used to implement it. ) This is *not* a general
3737 * replacement for a /dev/null. What we do here is create a temp
3738 * file (an empty file), open up that as the script, and then
3739 * immediately close and unlink it. Close enough for jazz. */
3740#define FAKE_BIT_BUCKET_PREFIX "/tmp/perlnull-"
3741#define FAKE_BIT_BUCKET_SUFFIX "XXXXXXXX"
3742#define FAKE_BIT_BUCKET_TEMPLATE FAKE_BIT_BUCKET_PREFIX FAKE_BIT_BUCKET_SUFFIX
3743 char tmpname[sizeof(FAKE_BIT_BUCKET_TEMPLATE)] = {
3744 FAKE_BIT_BUCKET_TEMPLATE
3745 };
3746 const char * const err = "Failed to create a fake bit bucket";
3747 if (strEQ(scriptname, BIT_BUCKET)) {
3748#ifdef HAS_MKSTEMP /* Hopefully mkstemp() is safe here. */
60f7fc1e 3749 int old_umask = umask(0600);
9c12f1e5 3750 int tmpfd = mkstemp(tmpname);
60f7fc1e 3751 umask(old_umask);
9c12f1e5
RGS		 3752 if (tmpfd > -1) {
3753 scriptname = tmpname;
3754 close(tmpfd);
3755 } else
3756 Perl_croak(aTHX_ err);
3757#else
3758# ifdef HAS_MKTEMP
3759 scriptname = mktemp(tmpname);
3760 if (!scriptname)
3761 Perl_croak(aTHX_ err);
3762# endif
3763#endif
3764 }
3765#endif
8d113837 3766 rsfp = PerlIO_open(scriptname,PERL_SCRIPT_MODE);
9c12f1e5
RGS		 3767#ifdef FAKE_BIT_BUCKET
3768 if (memEQ(scriptname, FAKE_BIT_BUCKET_PREFIX,
3769 sizeof(FAKE_BIT_BUCKET_PREFIX) - 1)
3770 && strlen(scriptname) == sizeof(tmpname) - 1) {
3771 unlink(scriptname);
3772 }
3773 scriptname = BIT_BUCKET;
3774#endif
96436eeb 3775 }
8d113837 3776 if (!rsfp) {
447218f8 3777 /* PSz 16 Sep 03 Keep neat error message */
b1681ed3
RGS		 3778 if (PL_e_script)
3779 Perl_croak(aTHX_ "Can't open "BIT_BUCKET": %s\n", Strerror(errno));
3780 else
3781 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3782 CopFILE(PL_curcop), Strerror(errno));
13281fa4 3783 }
375ed12a 3784 fd = PerlIO_fileno(rsfp);
a7c81930 3785#if defined(HAS_FCNTL) && defined(F_SETFD)
375ed12a
JH		 3786 if (fd >= 0) {
3787 /* ensure close-on-exec */
3788 if (fcntl(fd, F_SETFD, 1) < 0) {
3789 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3790 CopFILE(PL_curcop), Strerror(errno));
3791 }
3792 }
a7c81930 3793#endif
1dfef69b 3794
375ed12a
JH		 3795 if (fd < 0 ||
3796 (PerlLIO_fstat(fd, &tmpstatbuf) >= 0
3797 && S_ISDIR(tmpstatbuf.st_mode)))
1dfef69b
RS		 3798 Perl_croak(aTHX_ "Can't open perl script \"%s\": %s\n",
3799 CopFILE(PL_curcop),
0c0d42ff 3800 Strerror(EISDIR));
1dfef69b 3801
8d113837 3802 return rsfp;
79072805 3803}
8d063cd8 3804
7b89560d
JH		 3805/* Mention
3806 * I_SYSSTATVFS HAS_FSTATVFS
3807 * I_SYSMOUNT
c890dc6c 3808 * I_STATFS HAS_FSTATFS HAS_GETFSSTAT
7b89560d
JH		 3809 * I_MNTENT HAS_GETMNTENT HAS_HASMNTOPT
3810 * here so that metaconfig picks them up. */
3811
104d25b7 3812
cc69b689 3813#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 3814/* Don't even need this function. */
cc69b689 3815#else
ec2019ad
NC		 3816STATIC void
3817S_validate_suid(pTHX_ PerlIO *rsfp)
3818{
dfff4baf
BF		 3819 const Uid_t my_uid = PerlProc_getuid();
3820 const Uid_t my_euid = PerlProc_geteuid();
3821 const Gid_t my_gid = PerlProc_getgid();
3822 const Gid_t my_egid = PerlProc_getegid();
985213f2 3823
ac076a5c
NC		 3824 PERL_ARGS_ASSERT_VALIDATE_SUID;
3825
985213f2 3826 if (my_euid != my_uid || my_egid != my_gid) { /* (suidperl doesn't exist, in fact) */
a2e578da 3827 dVAR;
375ed12a
JH		 3828 int fd = PerlIO_fileno(rsfp);
3829 if (fd < 0) {
3830 Perl_croak(aTHX_ "Illegal suidscript");
3831 } else {
3832 if (PerlLIO_fstat(fd, &PL_statbuf) < 0) { /* may be either wrapped or real suid */
3833 Perl_croak(aTHX_ "Illegal suidscript");
3834 }
3835 }
3836 if ((my_euid != my_uid && my_euid == PL_statbuf.st_uid && PL_statbuf.st_mode & S_ISUID)
3837 ||
3838 (my_egid != my_gid && my_egid == PL_statbuf.st_gid && PL_statbuf.st_mode & S_ISGID)
3839 )
b28d0864 3840 if (!PL_do_undump)
cea2e8a9 3841 Perl_croak(aTHX_ "YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\
a687059c 3842FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n");
a687059c 3843 /* not set-id, must be wrapped */
a687059c 3844 }
79072805 3845}
cc69b689 3846#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
13281fa4 3847
76e3520e 3848STATIC void
2f9285f8 3849S_find_beginning(pTHX_ SV* linestr_sv, PerlIO *rsfp)
79072805 3850{
c7030b81 3851 const char *s;
eb578fdb 3852 const char *s2;
33b78306 3853
7918f24d
NC		 3854 PERL_ARGS_ASSERT_FIND_BEGINNING;
3855
33b78306
LW		 3856 /* skip forward in input to the real script? */
3857
737c24fc 3858 do {
2f9285f8 3859 if ((s = sv_gets(linestr_sv, rsfp, 0)) == NULL)
cea2e8a9 3860 Perl_croak(aTHX_ "No Perl script found in input\n");
4f0c37ba 3861 s2 = s;
737c24fc
Z		 3862 } while (!(*s == '#' && s[1] == '!' && ((s = instr(s,"perl")) || (s = instr(s2,"PERL")))));
3863 PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
3864 while (*s && !(isSPACE (*s) || *s == '#')) s++;
3865 s2 = s;
3866 while (*s == ' ' || *s == '\t') s++;
3867 if (*s++ == '-') {
3868 while (isDIGIT(s2[-1]) || s2[-1] == '-' || s2[-1] == '.'
3869 || s2[-1] == '_') s2--;
3870 if (strnEQ(s2-4,"perl",4))
3871 while ((s = moreswitches(s)))
3872 ;
83025b21
LW		 3873 }
3874}
3875
afe37c7d 3876
76e3520e 3877STATIC void
cea2e8a9 3878S_init_ids(pTHX)
352d5a3a 3879{
284167a5
S		 3880 /* no need to do anything here any more if we don't
3881 * do tainting. */
dc6d7f5c 3882#ifndef NO_TAINT_SUPPORT
dfff4baf
BF		 3883 const Uid_t my_uid = PerlProc_getuid();
3884 const Uid_t my_euid = PerlProc_geteuid();
3885 const Gid_t my_gid = PerlProc_getgid();
3886 const Gid_t my_egid = PerlProc_getegid();
985213f2 3887
20b7effb
JH		 3888 PERL_UNUSED_CONTEXT;
3889
22f7c9c9 3890 /* Should not happen: */
985213f2 3891 CHECK_MALLOC_TAINT(my_uid && (my_euid != my_uid || my_egid != my_gid));
284167a5
S		 3892 TAINTING_set( TAINTING_get | (my_uid && (my_euid != my_uid || my_egid != my_gid)) );
3893#endif
ae3f3efd
PS		 3894 /* BUG */
3895 /* PSz 27 Feb 04
3896 * Should go by suidscript, not uid!=euid: why disallow
3897 * system("ls") in scripts run from setuid things?
3898 * Or, is this run before we check arguments and set suidscript?
3899 * What about SETUID_SCRIPTS_ARE_SECURE_NOW: could we use fdscript then?
3900 * (We never have suidscript, can we be sure to have fdscript?)
3901 * Or must then go by UID checks? See comments in forbid_setid also.
3902 */
748a9306 3903}
79072805 3904
a0643315
JH		 3905/* This is used very early in the lifetime of the program,
3906 * before even the options are parsed, so PL_tainting has
b0891165 3907 * not been initialized properly. */
af419de7 3908bool
8f42b153 3909Perl_doing_taint(int argc, char *argv[], char *envp[])
22f7c9c9 3910{
c3446a78
JH		 3911#ifndef PERL_IMPLICIT_SYS
3912 /* If we have PERL_IMPLICIT_SYS we can't call getuid() et alia
3913 * before we have an interpreter-- and the whole point of this
3914 * function is to be called at such an early stage. If you are on
3915 * a system with PERL_IMPLICIT_SYS but you do have a concept of
3916 * "tainted because running with altered effective ids', you'll
3917 * have to add your own checks somewhere in here. The two most
3918 * known samples of 'implicitness' are Win32 and NetWare, neither
3919 * of which has much of concept of 'uids'. */
dfff4baf
BF		 3920 Uid_t uid = PerlProc_getuid();
3921 Uid_t euid = PerlProc_geteuid();
3922 Gid_t gid = PerlProc_getgid();
3923 Gid_t egid = PerlProc_getegid();
6867be6d 3924 (void)envp;
22f7c9c9
JH		 3925
3926#ifdef VMS
af419de7 3927 uid |= gid << 16;
22f7c9c9
JH		 3928 euid |= egid << 16;
3929#endif
3930 if (uid && (euid != uid || egid != gid))
3931 return 1;
c3446a78 3932#endif /* !PERL_IMPLICIT_SYS */
af419de7
JH		 3933 /* This is a really primitive check; environment gets ignored only
3934 * if -T are the first chars together; otherwise one gets
3935 * "Too late" message. */
22f7c9c9 3936 if ( argc > 1 && argv[1][0] == '-'
305b8651 3937 && isALPHA_FOLD_EQ(argv[1][1], 't'))
22f7c9c9
JH		 3938 return 1;
3939 return 0;
3940}
22f7c9c9 3941
d0bafe7e
NC		 3942/* Passing the flag as a single char rather than a string is a slight space
3943 optimisation. The only message that isn't /^-.$/ is
3944 "program input from stdin", which is substituted in place of '\0', which
3945 could never be a command line flag. */
76e3520e 3946STATIC void
f20b2998 3947S_forbid_setid(pTHX_ const char flag, const bool suidscript) /* g */
bbce6d69 3948{
d0bafe7e
NC		 3949 char string[3] = "-x";
3950 const char *message = "program input from stdin";
3951
20b7effb 3952 PERL_UNUSED_CONTEXT;
d0bafe7e
NC		 3953 if (flag) {
3954 string[1] = flag;
3955 message = string;
3956 }
3957
ae3f3efd 3958#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
985213f2 3959 if (PerlProc_getuid() != PerlProc_geteuid())
d0bafe7e 3960 Perl_croak(aTHX_ "No %s allowed while running setuid", message);
985213f2 3961 if (PerlProc_getgid() != PerlProc_getegid())
d0bafe7e 3962 Perl_croak(aTHX_ "No %s allowed while running setgid", message);
ae3f3efd 3963#endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */
f20b2998 3964 if (suidscript)
d0bafe7e 3965 Perl_croak(aTHX_ "No %s allowed with (suid) fdscript", message);
bbce6d69 3966}
3967
1ee4443e 3968void
5b235299
NC		 3969Perl_init_dbargs(pTHX)
3970{
3971 AV *const args = PL_dbargs = GvAV(gv_AVadd((gv_fetchpvs("DB::args",
3972 GV_ADDMULTI,
3973 SVt_PVAV))));
3974
3975 if (AvREAL(args)) {
3976 /* Someone has already created it.
3977 It might have entries, and if we just turn off AvREAL(), they will
3978 "leak" until global destruction. */
3979 av_clear(args);
3df49e2a 3980 if (SvTIED_mg((const SV *)args, PERL_MAGIC_tied))
7355df7e 3981 Perl_croak(aTHX_ "Cannot set tied @DB::args");
5b235299 3982 }
af80dd86 3983 AvREIFY_only(PL_dbargs);
5b235299
NC		 3984}
3985
3986void
1ee4443e 3987Perl_init_debugger(pTHX)
748a9306 3988{
c4420975 3989 HV * const ostash = PL_curstash;
a6d69523 3990 MAGIC *mg;
1ee4443e 3991
03d9f026 3992 PL_curstash = (HV *)SvREFCNT_inc_simple(PL_debstash);
5b235299
NC		 3993
3994 Perl_init_dbargs(aTHX);
8cece913
FC		 3995 PL_DBgv = MUTABLE_GV(
3996 SvREFCNT_inc(gv_fetchpvs("DB::DB", GV_ADDMULTI, SVt_PVGV))
3997 );
3998 PL_DBline = MUTABLE_GV(
3999 SvREFCNT_inc(gv_fetchpvs("DB::dbline", GV_ADDMULTI, SVt_PVAV))
4000 );
4001 PL_DBsub = MUTABLE_GV(SvREFCNT_inc(
4002 gv_HVadd(gv_fetchpvs("DB::sub", GV_ADDMULTI, SVt_PVHV))
4003 ));
5c1737d1 4004 PL_DBsingle = GvSV((gv_fetchpvs("DB::single", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 4005 if (!SvIOK(PL_DBsingle))
4006 sv_setiv(PL_DBsingle, 0);
a6d69523
TC		 4007 mg = sv_magicext(PL_DBsingle, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4008 mg->mg_private = DBVARMG_SINGLE;
4009 SvSETMAGIC(PL_DBsingle);
4010
5c1737d1 4011 PL_DBtrace = GvSV((gv_fetchpvs("DB::trace", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 4012 if (!SvIOK(PL_DBtrace))
4013 sv_setiv(PL_DBtrace, 0);
a6d69523
TC		 4014 mg = sv_magicext(PL_DBtrace, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4015 mg->mg_private = DBVARMG_TRACE;
4016 SvSETMAGIC(PL_DBtrace);
4017
5c1737d1 4018 PL_DBsignal = GvSV((gv_fetchpvs("DB::signal", GV_ADDMULTI, SVt_PV)));
4c0f30d6
NC		 4019 if (!SvIOK(PL_DBsignal))
4020 sv_setiv(PL_DBsignal, 0);
a6d69523
TC		 4021 mg = sv_magicext(PL_DBsignal, NULL, PERL_MAGIC_debugvar, &PL_vtbl_debugvar, 0, 0);
4022 mg->mg_private = DBVARMG_SIGNAL;
4023 SvSETMAGIC(PL_DBsignal);
4024
03d9f026 4025 SvREFCNT_dec(PL_curstash);
1ee4443e 4026 PL_curstash = ostash;
352d5a3a
LW		 4027}
4028
2ce36478
SM		 4029#ifndef STRESS_REALLOC
4030#define REASONABLE(size) (size)
0ff72558 4031#define REASONABLE_but_at_least(size,min) (size)
2ce36478
SM		 4032#else
4033#define REASONABLE(size) (1) /* unreasonable */
0ff72558 4034#define REASONABLE_but_at_least(size,min) (min)
2ce36478
SM		 4035#endif
4036
11343788 4037void
cea2e8a9 4038Perl_init_stacks(pTHX)
79072805 4039{
e336de0d 4040 /* start with 128-item stack and 8K cxstack */
3280af22 4041 PL_curstackinfo = new_stackinfo(REASONABLE(128),
e336de0d 4042 REASONABLE(8192/sizeof(PERL_CONTEXT) - 1));
3280af22
NIS		 4043 PL_curstackinfo->si_type = PERLSI_MAIN;
4044 PL_curstack = PL_curstackinfo->si_stack;
4045 PL_mainstack = PL_curstack; /* remember in case we switch stacks */
79072805 4046
3280af22
NIS		 4047 PL_stack_base = AvARRAY(PL_curstack);
4048 PL_stack_sp = PL_stack_base;
4049 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8990e307 4050
a02a5408 4051 Newx(PL_tmps_stack,REASONABLE(128),SV*);
3280af22
NIS		 4052 PL_tmps_floor = -1;
4053 PL_tmps_ix = -1;
4054 PL_tmps_max = REASONABLE(128);
8990e307 4055
a02a5408 4056 Newx(PL_markstack,REASONABLE(32),I32);
3280af22
NIS		 4057 PL_markstack_ptr = PL_markstack;
4058 PL_markstack_max = PL_markstack + REASONABLE(32);
79072805 4059
ce2f7c3b 4060 SET_MARK_OFFSET;
e336de0d 4061
a02a5408 4062 Newx(PL_scopestack,REASONABLE(32),I32);
d343c3ef
GG		 4063#ifdef DEBUGGING
4064 Newx(PL_scopestack_name,REASONABLE(32),const char*);
4065#endif
3280af22
NIS		 4066 PL_scopestack_ix = 0;
4067 PL_scopestack_max = REASONABLE(32);
79072805 4068
0ff72558 4069 Newx(PL_savestack,REASONABLE_but_at_least(128,SS_MAXPUSH),ANY);
3280af22 4070 PL_savestack_ix = 0;
0ff72558 4071 PL_savestack_max = REASONABLE_but_at_least(128,SS_MAXPUSH);
378cc40b 4072}
33b78306 4073
2ce36478
SM		 4074#undef REASONABLE
4075
76e3520e 4076STATIC void
cea2e8a9 4077S_nuke_stacks(pTHX)
6e72f9df 4078{
3280af22
NIS		 4079 while (PL_curstackinfo->si_next)
4080 PL_curstackinfo = PL_curstackinfo->si_next;
4081 while (PL_curstackinfo) {
4082 PERL_SI *p = PL_curstackinfo->si_prev;
bac4b2ad 4083 /* curstackinfo->si_stack got nuked by sv_free_arenas() */
3280af22
NIS		 4084 Safefree(PL_curstackinfo->si_cxstack);
4085 Safefree(PL_curstackinfo);
4086 PL_curstackinfo = p;
e336de0d 4087 }
3280af22
NIS		 4088 Safefree(PL_tmps_stack);
4089 Safefree(PL_markstack);
4090 Safefree(PL_scopestack);
58780814
GG		 4091#ifdef DEBUGGING
4092 Safefree(PL_scopestack_name);
4093#endif
3280af22 4094 Safefree(PL_savestack);
378cc40b 4095}
33b78306 4096
74e8ce34
NC		 4097void
4098Perl_populate_isa(pTHX_ const char *name, STRLEN len, ...)
4099{
4100 GV *const gv = gv_fetchpvn(name, len, GV_ADD | GV_ADDMULTI, SVt_PVAV);
4101 AV *const isa = GvAVn(gv);
4102 va_list args;
4103
4104 PERL_ARGS_ASSERT_POPULATE_ISA;
4105
4106 if(AvFILLp(isa) != -1)
4107 return;
4108
4109 /* NOTE: No support for tied ISA */
4110
4111 va_start(args, len);
4112 do {
4113 const char *const parent = va_arg(args, const char*);
4114 size_t parent_len;
4115
4116 if (!parent)
4117 break;
4118 parent_len = va_arg(args, size_t);
4119
4120 /* Arguments are supplied with a trailing :: */
4121 assert(parent_len > 2);
4122 assert(parent[parent_len - 1] == ':');
4123 assert(parent[parent_len - 2] == ':');
4124 av_push(isa, newSVpvn(parent, parent_len - 2));
4125 (void) gv_fetchpvn(parent, parent_len, GV_ADD, SVt_PVGV);
4126 } while (1);
4127 va_end(args);
4128}
4129
8990e307 4130
76e3520e 4131STATIC void
cea2e8a9 4132S_init_predump_symbols(pTHX)
45d8adaa 4133{
93a17b20 4134 GV *tmpgv;
af8c498a 4135 IO *io;
79072805 4136
64ace3f8 4137 sv_setpvs(get_sv("\"", GV_ADD), " ");
e23d9e2f
CS		 4138 PL_ofsgv = (GV*)SvREFCNT_inc(gv_fetchpvs(",", GV_ADD|GV_NOTQUAL, SVt_PV));
4139
d963bf01
NC		 4140
4141 /* Historically, PVIOs were blessed into IO::Handle, unless
4142 FileHandle was loaded, in which case they were blessed into
4143 that. Action at a distance.
4144 However, if we simply bless into IO::Handle, we break code
4145 that assumes that PVIOs will have (among others) a seek
4146 method. IO::File inherits from IO::Handle and IO::Seekable,
4147 and provides the needed methods. But if we simply bless into
4148 it, then we break code that assumed that by loading
4149 IO::Handle, *it* would work.
4150 So a compromise is to set up the correct @IO::File::ISA,
4151 so that code that does C<use IO::Handle>; will still work.
4152 */
4153
74e8ce34
NC		 4154 Perl_populate_isa(aTHX_ STR_WITH_LEN("IO::File::ISA"),
4155 STR_WITH_LEN("IO::Handle::"),
4156 STR_WITH_LEN("IO::Seekable::"),
4157 STR_WITH_LEN("Exporter::"),
4158 NULL);
d963bf01 4159
fafc274c 4160 PL_stdingv = gv_fetchpvs("STDIN", GV_ADD|GV_NOTQUAL, SVt_PVIO);
3280af22 4161 GvMULTI_on(PL_stdingv);
af8c498a 4162 io = GvIOp(PL_stdingv);
a04651f4 4163 IoTYPE(io) = IoTYPE_RDONLY;
af8c498a 4164 IoIFP(io) = PerlIO_stdin();
fafc274c 4165 tmpgv = gv_fetchpvs("stdin", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4166 GvMULTI_on(tmpgv);
a45c7426 4167 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4168
fafc274c 4169 tmpgv = gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
a5f75d66 4170 GvMULTI_on(tmpgv);
af8c498a 4171 io = GvIOp(tmpgv);
a04651f4 4172 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 4173 IoOFP(io) = IoIFP(io) = PerlIO_stdout();
4633a7c4 4174 setdefout(tmpgv);
fafc274c 4175 tmpgv = gv_fetchpvs("stdout", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4176 GvMULTI_on(tmpgv);
a45c7426 4177 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4178
fafc274c 4179 PL_stderrgv = gv_fetchpvs("STDERR", GV_ADD|GV_NOTQUAL, SVt_PVIO);
bf49b057
GS		 4180 GvMULTI_on(PL_stderrgv);
4181 io = GvIOp(PL_stderrgv);
a04651f4 4182 IoTYPE(io) = IoTYPE_WRONLY;
af8c498a 4183 IoOFP(io) = IoIFP(io) = PerlIO_stderr();
fafc274c 4184 tmpgv = gv_fetchpvs("stderr", GV_ADD|GV_NOTQUAL, SVt_PV);
a5f75d66 4185 GvMULTI_on(tmpgv);
a45c7426 4186 GvIOp(tmpgv) = MUTABLE_IO(SvREFCNT_inc_simple(io));
79072805 4187
de61bf2a 4188 PL_statname = newSVpvs(""); /* last filename we did stat on */
79072805 4189}
33b78306 4190
a11ec5a9 4191void
5aaab254 4192Perl_init_argv_symbols(pTHX_ int argc, char **argv)
33b78306 4193{
7918f24d
NC		 4194 PERL_ARGS_ASSERT_INIT_ARGV_SYMBOLS;
4195
79072805 4196 argc--,argv++; /* skip name of script */
3280af22 4197 if (PL_doswitches) {
79072805 4198 for (; argc > 0 && **argv == '-'; argc--,argv++) {
aec46f14 4199 char *s;
79072805
LW		 4200 if (!argv[0][1])
4201 break;
379d538a 4202 if (argv[0][1] == '-' && !argv[0][2]) {
79072805
LW		 4203 argc--,argv++;
4204 break;
4205 }
155aba94 4206 if ((s = strchr(argv[0], '='))) {
b3d904f3
NC		 4207 const char *const start_name = argv[0] + 1;
4208 sv_setpv(GvSV(gv_fetchpvn_flags(start_name, s - start_name,
4209 TRUE, SVt_PV)), s + 1);
79072805
LW		 4210 }
4211 else
71315bf2 4212 sv_setiv(GvSV(gv_fetchpv(argv[0]+1, GV_ADD, SVt_PV)),1);
fe14fcc3 4213 }
79072805 4214 }
fafc274c 4215 if ((PL_argvgv = gv_fetchpvs("ARGV", GV_ADD|GV_NOTQUAL, SVt_PVAV))) {
722fa0e9 4216 SvREFCNT_inc_simple_void_NN(PL_argvgv);
a11ec5a9 4217 GvMULTI_on(PL_argvgv);
a11ec5a9
RGS		 4218 av_clear(GvAVn(PL_argvgv));
4219 for (; argc > 0; argc--,argv++) {
aec46f14 4220 SV * const sv = newSVpv(argv[0],0);
b188953e 4221 av_push(GvAV(PL_argvgv),sv);
ce81ff12
JH		 4222 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
4223 if (PL_unicode & PERL_UNICODE_ARGV_FLAG)
4224 SvUTF8_on(sv);
4225 }
a05d7ebb
JH		 4226 if (PL_unicode & PERL_UNICODE_WIDESYSCALLS_FLAG) /* Sarathy? */
4227 (void)sv_utf8_decode(sv);
a11ec5a9
RGS		 4228 }
4229 }
82f96200
JL		 4230
4231 if (PL_inplace && (!PL_argvgv || AvFILL(GvAV(PL_argvgv)) == -1))
4232 Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE),
4233 "-i used with no filenames on the command line, "
4234 "reading from STDIN");
a11ec5a9
RGS		 4235}
4236
4237STATIC void
5aaab254 4238S_init_postdump_symbols(pTHX_ int argc, char **argv, char **env)
a11ec5a9 4239{
20b7effb 4240#ifdef USE_ITHREADS
27da23d5 4241 dVAR;
20b7effb 4242#endif
a11ec5a9 4243 GV* tmpgv;
a11ec5a9 4244
7918f24d
NC		 4245 PERL_ARGS_ASSERT_INIT_POSTDUMP_SYMBOLS;
4246
f2da823f 4247 PL_toptarget = newSV_type(SVt_PVIV);
76f68e9b 4248 sv_setpvs(PL_toptarget, "");
f2da823f 4249 PL_bodytarget = newSV_type(SVt_PVIV);
76f68e9b 4250 sv_setpvs(PL_bodytarget, "");
3280af22 4251 PL_formtarget = PL_bodytarget;
79072805 4252
bbce6d69 4253 TAINT;
a11ec5a9
RGS		 4254
4255 init_argv_symbols(argc,argv);
4256
fafc274c 4257 if ((tmpgv = gv_fetchpvs("0", GV_ADD|GV_NOTQUAL, SVt_PV))) {
3280af22 4258 sv_setpv(GvSV(tmpgv),PL_origfilename);
79072805 4259 }
fafc274c 4260 if ((PL_envgv = gv_fetchpvs("ENV", GV_ADD|GV_NOTQUAL, SVt_PVHV))) {
79072805 4261 HV *hv;
e17132c1 4262 bool env_is_not_environ;
cf93a474 4263 SvREFCNT_inc_simple_void_NN(PL_envgv);
3280af22
NIS		 4264 GvMULTI_on(PL_envgv);
4265 hv = GvHVn(PL_envgv);
a0714e2c 4266 hv_magic(hv, NULL, PERL_MAGIC_env);
2f42fcb0 4267#ifndef PERL_MICRO
fa6a1c44 4268#ifdef USE_ENVIRON_ARRAY
4633a7c4
LW		 4269 /* Note that if the supplied env parameter is actually a copy
4270 of the global environ then it may now point to free'd memory
4271 if the environment has been modified since. To avoid this
4272 problem we treat env==NULL as meaning 'use the default'
4273 */
4274 if (!env)
4275 env = environ;
e17132c1
JD		 4276 env_is_not_environ = env != environ;
4277 if (env_is_not_environ
4efc5df6
GS		 4278# ifdef USE_ITHREADS
4279 && PL_curinterp == aTHX
4280# endif
4281 )
4282 {
bd61b366 4283 environ[0] = NULL;
4efc5df6 4284 }
9b4eeda5 4285 if (env) {
9d27dca9 4286 char *s, *old_var;
27da23d5 4287 SV *sv;
764df951 4288 for (; *env; env++) {
9d27dca9
MT		 4289 old_var = *env;
4290
4291 if (!(s = strchr(old_var,'=')) || s == old_var)
79072805 4292 continue;
9d27dca9 4293
7da0e383 4294#if defined(MSDOS) && !defined(DJGPP)
61968511 4295 *s = '\0';
9d27dca9 4296 (void)strupr(old_var);
61968511 4297 *s = '=';
137443ea 4298#endif
61968511 4299 sv = newSVpv(s+1, 0);
9d27dca9 4300 (void)hv_store(hv, old_var, s - old_var, sv, 0);
e17132c1 4301 if (env_is_not_environ)
61968511 4302 mg_set(sv);
764df951 4303 }
9b4eeda5 4304 }
103a7189 4305#endif /* USE_ENVIRON_ARRAY */
2f42fcb0 4306#endif /* !PERL_MICRO */
79072805 4307 }
bbce6d69 4308 TAINT_NOT;
2710853f
MJD		 4309
4310 /* touch @F array to prevent spurious warnings 20020415 MJD */
4311 if (PL_minus_a) {
cbfd0a87 4312 (void) get_av("main::F", GV_ADD | GV_ADDMULTI);
2710853f 4313 }
33b78306 4314}
34de22dd 4315
76e3520e 4316STATIC void
2cace6ac 4317S_init_perllib(pTHX)
34de22dd 4318{
32910c7a 4319#ifndef VMS
929e5b34 4320 const char *perl5lib = NULL;
32910c7a 4321#endif
35ba5ce9 4322 const char *s;
a7560424 4323#if defined(WIN32) && !defined(PERL_IS_MINIPERL)
e6a0bbf8
NC		 4324 STRLEN len;
4325#endif
4326
284167a5 4327 if (!TAINTING_get) {
552a7a9b 4328#ifndef VMS
32910c7a 4329 perl5lib = PerlEnv_getenv("PERL5LIB");
88f5bc07
AB		 4330/*
4331 * It isn't possible to delete an environment variable with
42a3dd3a
RGS		 4332 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4333 * case we treat PERL5LIB as undefined if it has a zero-length value.
88f5bc07
AB		 4334 */
4335#if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
32910c7a 4336 if (perl5lib && *perl5lib != '\0')
88f5bc07 4337#else
32910c7a 4338 if (perl5lib)
88f5bc07 4339#endif
32910c7a 4340 incpush_use_sep(perl5lib, 0, INCPUSH_ADD_SUB_DIRS);
2cace6ac 4341 else {
4705144d
NC		 4342 s = PerlEnv_getenv("PERLLIB");
4343 if (s)
50d61629 4344 incpush_use_sep(s, 0, 0);
4705144d 4345 }
552a7a9b 4346#else /* VMS */
4347 /* Treat PERL5?LIB as a possible search list logical name -- the
4348 * "natural" VMS idiom for a Unix path string. We allow each
4349 * element to be a set of |-separated directories for compatibility.
4350 */
4351 char buf[256];
4352 int idx = 0;
4353 if (my_trnlnm("PERL5LIB",buf,0))
e28f3139 4354 do {
2cace6ac 4355 incpush_use_sep(buf, 0, INCPUSH_ADD_SUB_DIRS);
e28f3139 4356 } while (my_trnlnm("PERL5LIB",buf,++idx));
f05b5874 4357 else {
e28f3139 4358 while (my_trnlnm("PERLLIB",buf,idx++))
50d61629 4359 incpush_use_sep(buf, 0, 0);
f05b5874 4360 }
552a7a9b 4361#endif /* VMS */
85e6fe83 4362 }
34de22dd 4363
b0e687f7
NC		 4364#ifndef PERL_IS_MINIPERL
4365 /* miniperl gets just -I..., the split of $ENV{PERL5LIB}, and "." in @INC
4366 (and not the architecture specific directories from $ENV{PERL5LIB}) */
4367
c90c0ff4 4368/* Use the ~-expanded versions of APPLLIB (undocumented),
826e305c 4369 SITEARCH, SITELIB, VENDORARCH, VENDORLIB, ARCHLIB and PRIVLIB
df5cef82 4370*/
4633a7c4 4371#ifdef APPLLIB_EXP
be71fc8f
NC		 4372 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP),
4373 INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
16d20bd9 4374#endif
4633a7c4 4375
65f19062 4376#ifdef SITEARCH_EXP
3b290362
GS		 4377 /* sitearch is always relative to sitelib on Windows for
4378 * DLL-based path intuition to work correctly */
4379# if !defined(WIN32)
be71fc8f
NC		 4380 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITEARCH_EXP),
4381 INCPUSH_CAN_RELOCATE);
65f19062
GS		 4382# endif
4383#endif
4384
4633a7c4 4385#ifdef SITELIB_EXP
65f19062 4386# if defined(WIN32)
574c798a 4387 /* this picks up sitearch as well */
1c68cbf7 4388 s = PerlEnv_sitelib_path(PERL_FS_VERSION, &len);
1fa74d9f 4389 if (s)
e6a0bbf8 4390 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
65f19062 4391# else
50d61629 4392 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_EXP), INCPUSH_CAN_RELOCATE);
65f19062
GS		 4393# endif
4394#endif
189d1e8d 4395
65f19062 4396#ifdef PERL_VENDORARCH_EXP
4ea817c6 4397 /* vendorarch is always relative to vendorlib on Windows for
3b290362
GS		 4398 * DLL-based path intuition to work correctly */
4399# if !defined(WIN32)
be71fc8f
NC		 4400 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORARCH_EXP),
4401 INCPUSH_CAN_RELOCATE);
65f19062 4402# endif
4b03c463 4403#endif
65f19062
GS		 4404
4405#ifdef PERL_VENDORLIB_EXP
4406# if defined(WIN32)
e28f3139 4407 /* this picks up vendorarch as well */
1c68cbf7 4408 s = PerlEnv_vendorlib_path(PERL_FS_VERSION, &len);
1fa74d9f 4409 if (s)
e6a0bbf8 4410 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
65f19062 4411# else
be71fc8f
NC		 4412 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_EXP),
4413 INCPUSH_CAN_RELOCATE);
65f19062 4414# endif
a3635516 4415#endif
65f19062 4416
b9ba2fad 4417#ifdef ARCHLIB_EXP
2cace6ac 4418 S_incpush_use_sep(aTHX_ STR_WITH_LEN(ARCHLIB_EXP), INCPUSH_CAN_RELOCATE);
b9ba2fad
NC		 4419#endif
4420
4421#ifndef PRIVLIB_EXP
4422# define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
4423#endif
4424
4425#if defined(WIN32)
1c68cbf7 4426 s = PerlEnv_lib_path(PERL_FS_VERSION, &len);
2cace6ac
NC		 4427 if (s)
4428 incpush_use_sep(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_CAN_RELOCATE);
b9ba2fad 4429#else
04c9eecc 4430# ifdef NETWARE
2cace6ac 4431 S_incpush_use_sep(aTHX_ PRIVLIB_EXP, 0, INCPUSH_CAN_RELOCATE);
04c9eecc 4432# else
2cace6ac 4433 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PRIVLIB_EXP), INCPUSH_CAN_RELOCATE);
04c9eecc 4434# endif
b9ba2fad
NC		 4435#endif
4436
3b777bb4 4437#ifdef PERL_OTHERLIBDIRS
1e3208d8
NC		 4438 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4439 INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_NOT_BASEDIR
2cace6ac
NC		 4440 |INCPUSH_CAN_RELOCATE);
4441#endif
2cace6ac 4442
284167a5 4443 if (!TAINTING_get) {
2cace6ac 4444#ifndef VMS
2cace6ac
NC		 4445/*
4446 * It isn't possible to delete an environment variable with
4447 * PERL_USE_SAFE_PUTENV set unless unsetenv() is also available, so in that
4448 * case we treat PERL5LIB as undefined if it has a zero-length value.
4449 */
4450#if defined(PERL_USE_SAFE_PUTENV) && ! defined(HAS_UNSETENV)
32910c7a 4451 if (perl5lib && *perl5lib != '\0')
2cace6ac 4452#else
32910c7a 4453 if (perl5lib)
2cace6ac 4454#endif
32910c7a
NC		 4455 incpush_use_sep(perl5lib, 0,
4456 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
2cace6ac
NC		 4457#else /* VMS */
4458 /* Treat PERL5?LIB as a possible search list logical name -- the
4459 * "natural" VMS idiom for a Unix path string. We allow each
4460 * element to be a set of |-separated directories for compatibility.
4461 */
4462 char buf[256];
4463 int idx = 0;
4464 if (my_trnlnm("PERL5LIB",buf,0))
4465 do {
be71fc8f
NC		 4466 incpush_use_sep(buf, 0,
4467 INCPUSH_ADD_OLD_VERS|INCPUSH_NOT_BASEDIR);
2cace6ac
NC		 4468 } while (my_trnlnm("PERL5LIB",buf,++idx));
4469#endif /* VMS */
a26c0e28 4470 }
2cace6ac
NC		 4471
4472/* Use the ~-expanded versions of APPLLIB (undocumented),
826e305c 4473 SITELIB and VENDORLIB for older versions
2cace6ac
NC		 4474*/
4475#ifdef APPLLIB_EXP
be71fc8f
NC		 4476 S_incpush_use_sep(aTHX_ STR_WITH_LEN(APPLLIB_EXP), INCPUSH_ADD_OLD_VERS
4477 |INCPUSH_NOT_BASEDIR|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4478#endif
4479
2cace6ac
NC		 4480#if defined(SITELIB_STEM) && defined(PERL_INC_VERSION_LIST)
4481 /* Search for version-specific dirs below here */
be71fc8f
NC		 4482 S_incpush_use_sep(aTHX_ STR_WITH_LEN(SITELIB_STEM),
4483 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4484#endif
4485
4486
4487#if defined(PERL_VENDORLIB_STEM) && defined(PERL_INC_VERSION_LIST)
4488 /* Search for version-specific dirs below here */
be71fc8f
NC		 4489 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_VENDORLIB_STEM),
4490 INCPUSH_ADD_OLD_VERS|INCPUSH_CAN_RELOCATE);
2cace6ac
NC		 4491#endif
4492
4493#ifdef PERL_OTHERLIBDIRS
1e3208d8
NC		 4494 S_incpush_use_sep(aTHX_ STR_WITH_LEN(PERL_OTHERLIBDIRS),
4495 INCPUSH_ADD_OLD_VERS|INCPUSH_ADD_ARCHONLY_SUB_DIRS
4496 |INCPUSH_CAN_RELOCATE);
3b777bb4 4497#endif
b0e687f7 4498#endif /* !PERL_IS_MINIPERL */
3b777bb4 4499
284167a5 4500 if (!TAINTING_get)
55b4bc1c 4501 S_incpush(aTHX_ STR_WITH_LEN("."), 0);
774d564b 4502}
4503
739a0b84 4504#if defined(DOSISH) || defined(__SYMBIAN32__)
774d564b 4505# define PERLLIB_SEP ';'
4506#else
4507# if defined(VMS)
4508# define PERLLIB_SEP '|'
4509# else
e37778c2 4510# define PERLLIB_SEP ':'
774d564b 4511# endif
4512#endif
4513#ifndef PERLLIB_MANGLE
4514# define PERLLIB_MANGLE(s,n) (s)
ac27b0f5 4515#endif
774d564b 4516
59d6f6a4 4517#ifndef PERL_IS_MINIPERL
ad17a1ae
NC		 4518/* Push a directory onto @INC if it exists.
4519 Generate a new SV if we do this, to save needing to copy the SV we push
4520 onto @INC */
4521STATIC SV *
7ffdaae6 4522S_incpush_if_exists(pTHX_ AV *const av, SV *dir, SV *const stem)
ad17a1ae
NC		 4523{
4524 Stat_t tmpstatbuf;
7918f24d
NC		 4525
4526 PERL_ARGS_ASSERT_INCPUSH_IF_EXISTS;
4527
848ef955 4528 if (PerlLIO_stat(SvPVX_const(dir), &tmpstatbuf) >= 0 &&
ad17a1ae 4529 S_ISDIR(tmpstatbuf.st_mode)) {
3a9a9ba7 4530 av_push(av, dir);
7ffdaae6
NC		 4531 dir = newSVsv(stem);
4532 } else {
4533 /* Truncate dir back to stem. */
4534 SvCUR_set(dir, SvCUR(stem));
ad17a1ae
NC		 4535 }
4536 return dir;
4537}
59d6f6a4 4538#endif
ad17a1ae 4539
c29067d7
CH		 4540STATIC SV *
4541S_mayberelocate(pTHX_ const char *const dir, STRLEN len, U32 flags)
774d564b 4542{
6434436b 4543 const U8 canrelocate = (U8)flags & INCPUSH_CAN_RELOCATE;
c29067d7 4544 SV *libdir;
774d564b 4545
c29067d7 4546 PERL_ARGS_ASSERT_MAYBERELOCATE;
08d0d8ab 4547 assert(len > 0);
3a9a9ba7 4548
d2898d73
EB		 4549 /* I am not convinced that this is valid when PERLLIB_MANGLE is
4550 defined to so something (in os2/os2.c), but the code has been
4551 this way, ignoring any possible changed of length, since
4552 760ac839baf413929cd31cc32ffd6dba6b781a81 (5.003_02) so I'll leave
4553 it be. */
4554 libdir = newSVpvn(PERLLIB_MANGLE(dir, len), len);
774d564b 4555
81600524 4556#ifdef VMS
db12e2d3 4557 {
81600524 4558 char *unix;
81600524
CB		 4559
4560 if ((unix = tounixspec_ts(SvPV(libdir,len),NULL)) != NULL) {
4561 len = strlen(unix);
f420cce1 4562 while (len > 1 && unix[len-1] == '/') len--; /* Cosmetic */
81600524
CB		 4563 sv_usepvn(libdir,unix,len);
4564 }
4565 else
4566 PerlIO_printf(Perl_error_log,
4567 "Failed to unixify @INC element \"%s\"\n",
9dfa9235 4568 SvPV_nolen_const(libdir));
db12e2d3 4569 }
81600524
CB		 4570#endif
4571
dd374669
AL		 4572 /* Do the if() outside the #ifdef to avoid warnings about an unused
4573 parameter. */
4574 if (canrelocate) {
88fe16b2
NC		 4575#ifdef PERL_RELOCATABLE_INC
4576 /*
4577 * Relocatable include entries are marked with a leading .../
4578 *
4579 * The algorithm is
4580 * 0: Remove that leading ".../"
4581 * 1: Remove trailing executable name (anything after the last '/')
4582 * from the perl path to give a perl prefix
4583 * Then
4584 * While the @INC element starts "../" and the prefix ends with a real
4585 * directory (ie not . or ..) chop that real directory off the prefix
4586 * and the leading "../" from the @INC element. ie a logical "../"
4587 * cleanup
4588 * Finally concatenate the prefix and the remainder of the @INC element
4589 * The intent is that /usr/local/bin/perl and .../../lib/perl5
4590 * generates /usr/local/lib/perl5
4591 */
890ce7af 4592 const char *libpath = SvPVX(libdir);
88fe16b2
NC		 4593 STRLEN libpath_len = SvCUR(libdir);
4594 if (libpath_len >= 4 && memEQ (libpath, ".../", 4)) {
4595 /* Game on! */
890ce7af 4596 SV * const caret_X = get_sv("\030", 0);
88fe16b2
NC		 4597 /* Going to use the SV just as a scratch buffer holding a C
4598 string: */
4599 SV *prefix_sv;
4600 char *prefix;
4601 char *lastslash;
4602
4603 /* $^X is *the* source of taint if tainting is on, hence
4604 SvPOK() won't be true. */
4605 assert(caret_X);
4606 assert(SvPOKp(caret_X));
a663657d
NC		 4607 prefix_sv = newSVpvn_flags(SvPVX(caret_X), SvCUR(caret_X),
4608 SvUTF8(caret_X));
88fe16b2
NC		 4609 /* Firstly take off the leading .../
4610 If all else fail we'll do the paths relative to the current
4611 directory. */
4612 sv_chop(libdir, libpath + 4);
4613 /* Don't use SvPV as we're intentionally bypassing taining,
4614 mortal copies that the mg_get of tainting creates, and
4615 corruption that seems to come via the save stack.
4616 I guess that the save stack isn't correctly set up yet. */
4617 libpath = SvPVX(libdir);
4618 libpath_len = SvCUR(libdir);
4619
4620 /* This would work more efficiently with memrchr, but as it's
4621 only a GNU extension we'd need to probe for it and
4622 implement our own. Not hard, but maybe not worth it? */
4623
4624 prefix = SvPVX(prefix_sv);
4625 lastslash = strrchr(prefix, '/');
4626
4627 /* First time in with the *lastslash = '\0' we just wipe off
4628 the trailing /perl from (say) /usr/foo/bin/perl
4629 */
4630 if (lastslash) {
4631 SV *tempsv;
4632 while ((*lastslash = '\0'), /* Do that, come what may. */
4633 (libpath_len >= 3 && memEQ(libpath, "../", 3)
4634 && (lastslash = strrchr(prefix, '/')))) {
4635 if (lastslash[1] == '\0'
4636 || (lastslash[1] == '.'
4637 && (lastslash[2] == '/' /* ends "/." */
4638 || (lastslash[2] == '/'
4639 && lastslash[3] == '/' /* or "/.." */
4640 )))) {
4641 /* Prefix ends "/" or "/." or "/..", any of which
4642 are fishy, so don't do any more logical cleanup.
4643 */
4644 break;
4645 }
4646 /* Remove leading "../" from path */
4647 libpath += 3;
4648 libpath_len -= 3;
4649 /* Next iteration round the loop removes the last
4650 directory name from prefix by writing a '\0' in
4651 the while clause. */
4652 }
4653 /* prefix has been terminated with a '\0' to the correct
4654 length. libpath points somewhere into the libdir SV.
4655 We need to join the 2 with '/' and drop the result into
4656 libdir. */
4657 tempsv = Perl_newSVpvf(aTHX_ "%s/%s", prefix, libpath);
4658 SvREFCNT_dec(libdir);
4659 /* And this is the new libdir. */
4660 libdir = tempsv;
284167a5 4661 if (TAINTING_get &&
985213f2
AB		 4662 (PerlProc_getuid() != PerlProc_geteuid() ||
4663 PerlProc_getgid() != PerlProc_getegid())) {
486ec47a 4664 /* Need to taint relocated paths if running set ID */
88fe16b2
NC		 4665 SvTAINTED_on(libdir);
4666 }
4667 }
4668 SvREFCNT_dec(prefix_sv);
4669 }
88fe16b2 4670#endif
dd374669 4671 }
c29067d7 4672 return libdir;
c29067d7
CH		 4673}
4674
4675STATIC void
4676S_incpush(pTHX_ const char *const dir, STRLEN len, U32 flags)
4677{
c29067d7
CH		 4678#ifndef PERL_IS_MINIPERL
4679 const U8 using_sub_dirs
4680 = (U8)flags & (INCPUSH_ADD_VERSIONED_SUB_DIRS
4681 |INCPUSH_ADD_ARCHONLY_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
4682 const U8 add_versioned_sub_dirs
4683 = (U8)flags & INCPUSH_ADD_VERSIONED_SUB_DIRS;
4684 const U8 add_archonly_sub_dirs
4685 = (U8)flags & INCPUSH_ADD_ARCHONLY_SUB_DIRS;
4686#ifdef PERL_INC_VERSION_LIST
4687 const U8 addoldvers = (U8)flags & INCPUSH_ADD_OLD_VERS;
4688#endif
4689#endif
4690 const U8 unshift = (U8)flags & INCPUSH_UNSHIFT;
4691 const U8 push_basedir = (flags & INCPUSH_NOT_BASEDIR) ? 0 : 1;
4692 AV *const inc = GvAVn(PL_incgv);
4693
4694 PERL_ARGS_ASSERT_INCPUSH;
4695 assert(len > 0);
4696
4697 /* Could remove this vestigial extra block, if we don't mind a lot of
4698 re-indenting diff noise. */
4699 {
5a702b9a 4700 SV *const libdir = mayberelocate(dir, len, flags);
c29067d7
CH		 4701 /* Change 20189146be79a0596543441fa369c6bf7f85103f, to fix RT#6665,
4702 arranged to unshift #! line -I onto the front of @INC. However,
4703 -I can add version and architecture specific libraries, and they
4704 need to go first. The old code assumed that it was always
4705 pushing. Hence to make it work, need to push the architecture
4706 (etc) libraries onto a temporary array, then "unshift" that onto
4707 the front of @INC. */
4708#ifndef PERL_IS_MINIPERL
4709 AV *const av = (using_sub_dirs) ? (unshift ? newAV() : inc) : NULL;
c29067d7 4710
774d564b 4711 /*
4712 * BEFORE pushing libdir onto @INC we may first push version- and
4713 * archname-specific sub-directories.
4714 */
ee80e7be 4715 if (using_sub_dirs) {
5a702b9a 4716 SV *subdir = newSVsv(libdir);
29d82f8d 4717#ifdef PERL_INC_VERSION_LIST
8353b874 4718 /* Configure terminates PERL_INC_VERSION_LIST with a NULL */
c4420975
AL		 4719 const char * const incverlist[] = { PERL_INC_VERSION_LIST };
4720 const char * const *incver;
29d82f8d 4721#endif
7ffdaae6 4722
1e3208d8 4723 if (add_versioned_sub_dirs) {
9c8a64f0 4724 /* .../version/archname if -d .../version/archname */
e51b748d 4725 sv_catpvs(subdir, "/" PERL_FS_VERSION "/" ARCHNAME);
7ffdaae6 4726 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
4b03c463 4727
9c8a64f0 4728 /* .../version if -d .../version */
e51b748d 4729 sv_catpvs(subdir, "/" PERL_FS_VERSION);
7ffdaae6 4730 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
29d82f8d 4731 }
9c8a64f0 4732
9c8a64f0 4733#ifdef PERL_INC_VERSION_LIST
ccc2aad8 4734 if (addoldvers) {
9c8a64f0
GS		 4735 for (incver = incverlist; *incver; incver++) {
4736 /* .../xxx if -d .../xxx */
e51b748d 4737 Perl_sv_catpvf(aTHX_ subdir, "/%s", *incver);
7ffdaae6 4738 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
9c8a64f0
GS		 4739 }
4740 }
29d82f8d 4741#endif
c992324b 4742
1e3208d8 4743 if (add_archonly_sub_dirs) {
c992324b 4744 /* .../archname if -d .../archname */
e51b748d 4745 sv_catpvs(subdir, "/" ARCHNAME);
7ffdaae6 4746 subdir = S_incpush_if_exists(aTHX_ av, subdir, libdir);
c992324b
NC		 4747
4748 }
10cc20f6
NC		 4749
4750 assert (SvREFCNT(subdir) == 1);
4751 SvREFCNT_dec(subdir);
774d564b 4752 }
59d6f6a4 4753#endif /* !PERL_IS_MINIPERL */
20189146
RGS		 4754 /* finally add this lib directory at the end of @INC */
4755 if (unshift) {
76895e89 4756#ifdef PERL_IS_MINIPERL
c70927a6 4757 const Size_t extra = 0;
76895e89 4758#else
b9f2b683 4759 Size_t extra = av_tindex(av) + 1;
76895e89 4760#endif
a26c0e28
NC		 4761 av_unshift(inc, extra + push_basedir);
4762 if (push_basedir)
4763 av_store(inc, extra, libdir);
76895e89 4764#ifndef PERL_IS_MINIPERL
3a9a9ba7
NC		 4765 while (extra--) {
4766 /* av owns a reference, av_store() expects to be donated a
4767 reference, and av expects to be sane when it's cleared.
4768 If I wanted to be naughty and wrong, I could peek inside the
4769 implementation of av_clear(), realise that it uses
4770 SvREFCNT_dec() too, so av's array could be a run of NULLs,
4771 and so directly steal from it (with a memcpy() to inc, and
4772 then memset() to NULL them out. But people copy code from the
4773 core expecting it to be best practise, so let's use the API.
4774 Although studious readers will note that I'm not checking any
4775 return codes. */
4776 av_store(inc, extra, SvREFCNT_inc(*av_fetch(av, extra, FALSE)));
4777 }
4778 SvREFCNT_dec(av);
59d6f6a4 4779#endif
20189146 4780 }
a26c0e28 4781 else if (push_basedir) {
3a9a9ba7 4782 av_push(inc, libdir);
20189146 4783 }
a26c0e28
NC		 4784
4785 if (!push_basedir) {
4786 assert (SvREFCNT(libdir) == 1);
4787 SvREFCNT_dec(libdir);
4788 }
774d564b 4789 }
34de22dd 4790}
93a17b20 4791
55b4bc1c 4792STATIC void
50d61629 4793S_incpush_use_sep(pTHX_ const char *p, STRLEN len, U32 flags)
55b4bc1c 4794{
50d61629
NC		 4795 const char *s;
4796 const char *end;
55b4bc1c
NC		 4797 /* This logic has been broken out from S_incpush(). It may be possible to
4798 simplify it. */
4799
4705144d
NC		 4800 PERL_ARGS_ASSERT_INCPUSH_USE_SEP;
4801
f31c6eed
JD		 4802 /* perl compiled with -DPERL_RELOCATABLE_INCPUSH will ignore the len
4803 * argument to incpush_use_sep. This allows creation of relocatable
4804 * Perl distributions that patch the binary at install time. Those
4805 * distributions will have to provide their own relocation tools; this
4806 * is not a feature otherwise supported by core Perl.
4807 */
4808#ifndef PERL_RELOCATABLE_INCPUSH
50d61629 4809 if (!len)
f31c6eed 4810#endif
50d61629
NC		 4811 len = strlen(p);
4812
4813 end = p + len;
4814
55b4bc1c 4815 /* Break at all separators */
e42f52dd 4816 while ((s = (const char*)memchr(p, PERLLIB_SEP, end - p))) {
50d61629
NC		 4817 if (s == p) {
4818 /* skip any consecutive separators */
55b4bc1c 4819
55b4bc1c 4820 /* Uncomment the next line for PATH semantics */
50d61629 4821 /* But you'll need to write tests */
55b4bc1c 4822 /* av_push(GvAVn(PL_incgv), newSVpvs(".")); */
50d61629 4823 } else {
55b4bc1c 4824 incpush(p, (STRLEN)(s - p), flags);
55b4bc1c 4825 }
50d61629 4826 p = s + 1;
55b4bc1c 4827 }
50d61629
NC		 4828 if (p != end)
4829 incpush(p, (STRLEN)(end - p), flags);
4830
55b4bc1c 4831}
199100c8 4832
93a17b20 4833void
864dbfa3 4834Perl_call_list(pTHX_ I32 oldscope, AV *paramList)
93a17b20 4835{
971a9dd3 4836 SV *atsv;
5f40764f 4837 volatile const line_t oldline = PL_curcop ? CopLINE(PL_curcop) : 0;
312caa8e 4838 CV *cv;
22921e25 4839 STRLEN len;
6224f72b 4840 int ret;
db36c5a1 4841 dJMPENV;
93a17b20 4842
7918f24d
NC		 4843 PERL_ARGS_ASSERT_CALL_LIST;
4844
b9f2b683 4845 while (av_tindex(paramList) >= 0) {
ea726b52 4846 cv = MUTABLE_CV(av_shift(paramList));
ece599bd
RGS		 4847 if (PL_savebegin) {
4848 if (paramList == PL_beginav) {
059a8bb7 4849 /* save PL_beginav for compiler */
ad64d0ec 4850 Perl_av_create_and_push(aTHX_ &PL_beginav_save, MUTABLE_SV(cv));
ece599bd
RGS		 4851 }
4852 else if (paramList == PL_checkav) {
4853 /* save PL_checkav for compiler */
ad64d0ec 4854 Perl_av_create_and_push(aTHX_ &PL_checkav_save, MUTABLE_SV(cv));
ece599bd 4855 }
3c10abe3
AG		 4856 else if (paramList == PL_unitcheckav) {
4857 /* save PL_unitcheckav for compiler */
ad64d0ec 4858 Perl_av_create_and_push(aTHX_ &PL_unitcheckav_save, MUTABLE_SV(cv));
3c10abe3 4859 }
059a8bb7 4860 } else {
b5bbe64a 4861 SAVEFREESV(cv);
059a8bb7 4862 }
14dd3ad8 4863 JMPENV_PUSH(ret);
6224f72b 4864 switch (ret) {
312caa8e 4865 case 0:
d6f07c05 4866 CALL_LIST_BODY(cv);
971a9dd3 4867 atsv = ERRSV;
10516c54 4868 (void)SvPV_const(atsv, len);
312caa8e
CS		 4869 if (len) {
4870 PL_curcop = &PL_compiling;
57843af0 4871 CopLINE_set(PL_curcop, oldline);
312caa8e 4872 if (paramList == PL_beginav)
396482e1 4873 sv_catpvs(atsv, "BEGIN failed--compilation aborted");
312caa8e 4874 else
4f25aa18
GS		 4875 Perl_sv_catpvf(aTHX_ atsv,
4876 "%s failed--call queue aborted",
7d30b5c4 4877 paramList == PL_checkav ? "CHECK"
4f25aa18 4878 : paramList == PL_initav ? "INIT"
3c10abe3 4879 : paramList == PL_unitcheckav ? "UNITCHECK"
4f25aa18 4880 : "END");
312caa8e
CS		 4881 while (PL_scopestack_ix > oldscope)
4882 LEAVE;
14dd3ad8 4883 JMPENV_POP;
be2597df 4884 Perl_croak(aTHX_ "%"SVf"", SVfARG(atsv));
a0d0e21e 4885 }
85e6fe83 4886 break;
6224f72b 4887 case 1:
f86702cc 4888 STATUS_ALL_FAILURE;
924ba076 4889 /* FALLTHROUGH */
6224f72b 4890 case 2:
85e6fe83 4891 /* my_exit() was called */
3280af22 4892 while (PL_scopestack_ix > oldscope)
2ae324a7 4893 LEAVE;
84902520 4894 FREETMPS;
03d9f026 4895 SET_CURSTASH(PL_defstash);
3280af22 4896 PL_curcop = &PL_compiling;
57843af0 4897 CopLINE_set(PL_curcop, oldline);
14dd3ad8 4898 JMPENV_POP;
f86702cc 4899 my_exit_jump();
e5964223 4900 NOT_REACHED; /* NOTREACHED */
6224f72b 4901 case 3:
312caa8e
CS		 4902 if (PL_restartop) {
4903 PL_curcop = &PL_compiling;
57843af0 4904 CopLINE_set(PL_curcop, oldline);
312caa8e 4905 JMPENV_JUMP(3);
85e6fe83 4906 }
5637ef5b 4907 PerlIO_printf(Perl_error_log, "panic: restartop in call_list\n");
312caa8e
CS		 4908 FREETMPS;
4909 break;
8990e307 4910 }
14dd3ad8 4911 JMPENV_POP;
93a17b20 4912 }
93a17b20 4913}
93a17b20 4914
f86702cc 4915void
864dbfa3 4916Perl_my_exit(pTHX_ U32 status)
f86702cc 4917{
6136213b
JGM		 4918 if (PL_exit_flags & PERL_EXIT_ABORT) {
4919 abort();
4920 }
4921 if (PL_exit_flags & PERL_EXIT_WARN) {
4922 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
7b0eb0b8 4923 Perl_warn(aTHX_ "Unexpected exit %lu", (unsigned long)status);
6136213b
JGM		 4924 PL_exit_flags &= ~PERL_EXIT_ABORT;
4925 }
f86702cc 4926 switch (status) {
4927 case 0:
4928 STATUS_ALL_SUCCESS;
4929 break;
4930 case 1:
4931 STATUS_ALL_FAILURE;
4932 break;
4933 default:
6ac6a52b 4934 STATUS_EXIT_SET(status);
f86702cc 4935 break;
4936 }
4937 my_exit_jump();
4938}
4939
4940void
864dbfa3 4941Perl_my_failure_exit(pTHX)
f86702cc 4942{
4943#ifdef VMS
fb38d079
JM		 4944 /* We have been called to fall on our sword. The desired exit code
4945 * should be already set in STATUS_UNIX, but could be shifted over
0968cdad
JM		 4946 * by 8 bits. STATUS_UNIX_EXIT_SET will handle the cases where a
4947 * that code is set.
fb38d079
JM		 4948 *
4949 * If an error code has not been set, then force the issue.
4950 */
0968cdad
JM		 4951 if (MY_POSIX_EXIT) {
4952
e08e1e1d
JM		 4953 /* According to the die_exit.t tests, if errno is non-zero */
4954 /* It should be used for the error status. */
0968cdad 4955
e08e1e1d
JM		 4956 if (errno == EVMSERR) {
4957 STATUS_NATIVE = vaxc$errno;
4958 } else {
0968cdad 4959
e08e1e1d
JM		 4960 /* According to die_exit.t tests, if the child_exit code is */
4961 /* also zero, then we need to exit with a code of 255 */
4962 if ((errno != 0) && (errno < 256))
4963 STATUS_UNIX_EXIT_SET(errno);
4964 else if (STATUS_UNIX < 255) {
0968cdad 4965 STATUS_UNIX_EXIT_SET(255);
e08e1e1d
JM		 4966 }
4967
0968cdad 4968 }
e08e1e1d
JM		 4969
4970 /* The exit code could have been set by $? or vmsish which
4971 * means that it may not have fatal set. So convert
4972 * success/warning codes to fatal with out changing
4973 * the POSIX status code. The severity makes VMS native
4974 * status handling work, while UNIX mode programs use the
4975 * the POSIX exit codes.
4976 */
4977 if ((STATUS_NATIVE & (STS$K_SEVERE|STS$K_ERROR)) == 0) {
4978 STATUS_NATIVE &= STS$M_COND_ID;
4979 STATUS_NATIVE |= STS$K_ERROR | STS$M_INHIB_MSG;
4980 }
0968cdad
JM		 4981 }
4982 else {
4983 /* Traditionally Perl on VMS always expects a Fatal Error. */
4984 if (vaxc$errno & 1) {
4985
4986 /* So force success status to failure */
4987 if (STATUS_NATIVE & 1)
4988 STATUS_ALL_FAILURE;
4989 }
4990 else {
4991 if (!vaxc$errno) {
4992 STATUS_UNIX = EINTR; /* In case something cares */
4993 STATUS_ALL_FAILURE;
4994 }
4995 else {
4996 int severity;
4997 STATUS_NATIVE = vaxc$errno; /* Should already be this */
4998
4999 /* Encode the severity code */
5000 severity = STATUS_NATIVE & STS$M_SEVERITY;
5001 STATUS_UNIX = (severity ? severity : 1) << 8;
5002
5003 /* Perl expects this to be a fatal error */
5004 if (severity != STS$K_SEVERE)
5005 STATUS_ALL_FAILURE;
5006 }
5007 }
5008 }
fb38d079 5009
f86702cc 5010#else
9b599b2a 5011 int exitstatus;
f86702cc 5012 if (errno & 255)
e5218da5 5013 STATUS_UNIX_SET(errno);
9b599b2a 5014 else {
e5218da5 5015 exitstatus = STATUS_UNIX >> 8;
9b599b2a 5016 if (exitstatus & 255)
e5218da5 5017 STATUS_UNIX_SET(exitstatus);
9b599b2a 5018 else
e5218da5 5019 STATUS_UNIX_SET(255);
9b599b2a 5020 }
f86702cc 5021#endif
6136213b
JGM		 5022 if (PL_exit_flags & PERL_EXIT_ABORT) {
5023 abort();
5024 }
5025 if (PL_exit_flags & PERL_EXIT_WARN) {
5026 PL_exit_flags |= PERL_EXIT_ABORT; /* Protect against reentrant calls */
7b0eb0b8 5027 Perl_warn(aTHX_ "Unexpected exit failure %ld", (long)PL_statusvalue);
6136213b
JGM		 5028 PL_exit_flags &= ~PERL_EXIT_ABORT;
5029 }
f86702cc 5030 my_exit_jump();
93a17b20
LW		 5031}
5032
76e3520e 5033STATIC void
cea2e8a9 5034S_my_exit_jump(pTHX)
f86702cc 5035{
3280af22
NIS		 5036 if (PL_e_script) {
5037 SvREFCNT_dec(PL_e_script);
a0714e2c 5038 PL_e_script = NULL;
f86702cc 5039 }
5040
3280af22 5041 POPSTACK_TO(PL_mainstack);
f97a0ef2
RH		 5042 dounwind(-1);
5043 LEAVE_SCOPE(0);
ff0cee69 5044
6224f72b 5045 JMPENV_JUMP(2);
f86702cc 5046}
873ef191 5047
0cb96387 5048static I32
acfe0abc 5049read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen)
873ef191 5050{
9d4ba2ae
AL		 5051 const char * const p = SvPVX_const(PL_e_script);
5052 const char *nl = strchr(p, '\n');
5053
5054 PERL_UNUSED_ARG(idx);
5055 PERL_UNUSED_ARG(maxlen);
dd374669 5056
3280af22 5057 nl = (nl) ? nl+1 : SvEND(PL_e_script);
7dfe3f66 5058 if (nl-p == 0) {
0cb96387 5059 filter_del(read_e_script);
873ef191 5060 return 0;
7dfe3f66 5061 }
873ef191 5062 sv_catpvn(buf_sv, p, nl-p);
3280af22 5063 sv_chop(PL_e_script, nl);
873ef191
GS		 5064 return 1;
5065}
66610fdd 5066
db6e00bd
DD		 5067/* removes boilerplate code at the end of each boot_Module xsub */
5068void
5069Perl_xs_boot_epilog(pTHX_ const U32 ax)
5070{
5071 if (PL_unitcheckav)
5072 call_list(PL_scopestack_ix, PL_unitcheckav);
5073 XSRETURN_YES;
5074}
5075
66610fdd 5076/*
14d04a33 5077 * ex: set ts=8 sts=4 sw=4 et:
37442d52 5078 */
Unnamed repository; edit this file 'description' to name the repository.