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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
7a2bbcbf 6 * 2013, 2014, 2015, 2016 by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2aa47728 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
42# ifdef I_SYSUIO
43# include <sys/uio.h>
44# endif
45
46union control_un {
47 struct cmsghdr cm;
48 char control[CMSG_SPACE(sizeof(int))];
49};
50
2aa47728
NC
51#endif
52
5311654c
JH
53#ifndef HZ
54# ifdef CLK_TCK
55# define HZ CLK_TCK
56# else
57# define HZ 60
58# endif
59#endif
60
7114a2d2 61#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 62char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL
73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC
87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC
90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
71ad1b0c 95 HINTS_REFCNT_INIT;
e6827a76 96 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
97 MUTEX_INIT(&PL_my_ctx_mutex);
98# endif
e6827a76 99 }
c0bce9aa
NC
100#if defined(USE_ITHREADS)
101 else
102#else
103 /* This always happens for non-ithreads */
104#endif
105 {
e6827a76
NC
106 PERL_SET_THX(my_perl);
107 }
108}
06d86050 109
cbec8ebe
DM
110
111/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
112
113void
114Perl_sys_init(int* argc, char*** argv)
115{
4fc0badb 116 dVAR;
7918f24d
NC
117
118 PERL_ARGS_ASSERT_SYS_INIT;
119
cbec8ebe
DM
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
123}
124
125void
126Perl_sys_init3(int* argc, char*** argv, char*** env)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT3;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
136}
137
138void
88772978 139Perl_sys_term(void)
cbec8ebe 140{
4fc0badb 141 dVAR;
bf81751b
DM
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
144 }
cbec8ebe
DM
145}
146
147
32e30700
GS
148#ifdef PERL_IMPLICIT_SYS
149PerlInterpreter *
7766f137
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150perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
155{
156 PerlInterpreter *my_perl;
7918f24d
NC
157
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
159
9f653bb5 160 /* Newx() needs interpreter, so call malloc() instead */
32e30700 161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 162 S_init_tls_and_interp(my_perl);
32e30700
GS
163 Zero(my_perl, 1, PerlInterpreter);
164 PL_Mem = ipM;
7766f137
GS
165 PL_MemShared = ipMS;
166 PL_MemParse = ipMP;
32e30700
GS
167 PL_Env = ipE;
168 PL_StdIO = ipStd;
169 PL_LIO = ipLIO;
170 PL_Dir = ipD;
171 PL_Sock = ipS;
172 PL_Proc = ipP;
7cb608b5 173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 174
32e30700
GS
175 return my_perl;
176}
177#else
954c1994
GS
178
179/*
ccfc67b7
JH
180=head1 Embedding Functions
181
954c1994
GS
182=for apidoc perl_alloc
183
184Allocates a new Perl interpreter. See L<perlembed>.
185
186=cut
187*/
188
93a17b20 189PerlInterpreter *
cea2e8a9 190perl_alloc(void)
79072805 191{
cea2e8a9 192 PerlInterpreter *my_perl;
79072805 193
9f653bb5 194 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 196
e6827a76 197 S_init_tls_and_interp(my_perl);
7cb608b5 198#ifndef PERL_TRACK_MEMPOOL
07409e01 199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
200#else
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
203 return my_perl;
204#endif
79072805 205}
32e30700 206#endif /* PERL_IMPLICIT_SYS */
79072805 207
954c1994
GS
208/*
209=for apidoc perl_construct
210
211Initializes a new Perl interpreter. See L<perlembed>.
212
213=cut
214*/
215
79072805 216void
0cb96387 217perl_construct(pTHXx)
79072805 218{
27da23d5 219 dVAR;
7918f24d
NC
220
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
222
8990e307 223#ifdef MULTIPLICITY
54aff467 224 init_interp();
ac27b0f5 225 PL_perl_destruct_level = 1;
54aff467 226#else
7918f24d 227 PERL_UNUSED_ARG(my_perl);
54aff467
GS
228 if (PL_perl_destruct_level > 0)
229 init_interp();
230#endif
34caed6d
DM
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
75d476e2
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233#ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
235#endif
236
0d96b528 237 init_constants();
34caed6d
DM
238
239 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
241
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 243#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 244 PL_pidstatus = newHV();
ca0c25f6 245#endif
79072805 246
396482e1 247 PL_rs = newSVpvs("\n");
dc92893f 248
cea2e8a9 249 init_stacks();
79072805 250
748a9306 251 init_ids();
a5f75d66 252
312caa8e 253 JMPENV_BOOTSTRAP;
f86702cc
PP
254 STATUS_ALL_SUCCESS;
255
0672f40e 256 init_i18nl10n(1);
0b5b802d 257
ab821d7f 258#if defined(LOCAL_PATCH_COUNT)
3280af22 259 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
260#endif
261
52853b95
GS
262#ifdef HAVE_INTERP_INTERN
263 sys_intern_init();
264#endif
265
3a1ee7e8 266 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 267
3280af22
NIS
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 270 PL_errors = newSVpvs("");
76f68e9b
MHM
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 274#ifdef USE_ITHREADS
402d2eb1
NC
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 278 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 280#endif
e5dd39fc 281#ifdef USE_REENTRANT_API
59bd0823 282 Perl_reentrant_init(aTHX);
e5dd39fc 283#endif
7dc86639
YO
284#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
290 *
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
295 }
296#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
297
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
301 PL_strtab = newHV();
302
3d47000e
AB
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
305
a38ab475
RZ
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
307
2f42fcb0
JH
308#ifndef PERL_MICRO
309# ifdef USE_ENVIRON_ARRAY
0631ea03 310 PL_origenviron = environ;
2f42fcb0 311# endif
0631ea03
AB
312#endif
313
5311654c 314 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 315 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
b6c36746 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB
324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 327
27da23d5
JH
328#ifdef HAS_MMAP
329 if (!PL_mmap_page_size) {
330#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
331 {
332 SETERRNO(0, SS_NORMAL);
333# ifdef _SC_PAGESIZE
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
335# else
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
337# endif
338 if ((long) PL_mmap_page_size < 0) {
339 if (errno) {
44f8325f 340 SV * const error = ERRSV;
d4c19fe8 341 SvUPGRADE(error, SVt_PV);
0510663f 342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
343 }
344 else
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
346 }
347 }
348#else
349# ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
351# else
352# if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
354# endif
355# endif
356#endif
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
360 }
361#endif /* HAS_MMAP */
362
363#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
368#endif
369
7d113631
NC
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
371
a3e6e81e 372 PL_registered_mros = newHV();
9e169432
NC
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
a3e6e81e 375
7b8dd5f4
KW
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 392 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
393 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
394 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 395 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
7b8dd5f4 396
8990e307 397 ENTER;
79072805
LW
398}
399
954c1994 400/*
62375a60
NIS
401=for apidoc nothreadhook
402
403Stub that provides thread hook for perl_destruct when there are
404no threads.
405
406=cut
407*/
408
409int
4e9e3734 410Perl_nothreadhook(pTHX)
62375a60 411{
96a5add6 412 PERL_UNUSED_CONTEXT;
62375a60
NIS
413 return 0;
414}
415
41e4abd8
NC
416#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
417void
418Perl_dump_sv_child(pTHX_ SV *sv)
419{
420 ssize_t got;
bf357333
NC
421 const int sock = PL_dumper_fd;
422 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
423 union control_un control;
424 struct msghdr msg;
808ad2d0 425 struct iovec vec[2];
bf357333 426 struct cmsghdr *cmptr;
808ad2d0
NC
427 int returned_errno;
428 unsigned char buffer[256];
41e4abd8 429
7918f24d
NC
430 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
431
bf357333 432 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
433 return;
434
435 PerlIO_flush(Perl_debug_log);
436
bf357333
NC
437 /* All these shenanigans are to pass a file descriptor over to our child for
438 it to dump out to. We can't let it hold open the file descriptor when it
439 forks, as the file descriptor it will dump to can turn out to be one end
440 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 441 be open, the wait would be forever.) */
bf357333
NC
442
443 msg.msg_control = control.control;
444 msg.msg_controllen = sizeof(control.control);
445 /* We're a connected socket so we don't need a destination */
446 msg.msg_name = NULL;
447 msg.msg_namelen = 0;
448 msg.msg_iov = vec;
808ad2d0 449 msg.msg_iovlen = 1;
bf357333
NC
450
451 cmptr = CMSG_FIRSTHDR(&msg);
452 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
453 cmptr->cmsg_level = SOL_SOCKET;
454 cmptr->cmsg_type = SCM_RIGHTS;
455 *((int *)CMSG_DATA(cmptr)) = 1;
456
457 vec[0].iov_base = (void*)&sv;
458 vec[0].iov_len = sizeof(sv);
459 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
460
461 if(got < 0) {
bf357333 462 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
463 abort();
464 }
bf357333
NC
465 if(got < sizeof(sv)) {
466 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
467 abort();
468 }
469
808ad2d0
NC
470 /* Return protocol is
471 int: errno value
472 unsigned char: length of location string (0 for empty)
473 unsigned char*: string (not terminated)
474 */
475 vec[0].iov_base = (void*)&returned_errno;
476 vec[0].iov_len = sizeof(returned_errno);
477 vec[1].iov_base = buffer;
478 vec[1].iov_len = 1;
479
480 got = readv(sock, vec, 2);
41e4abd8
NC
481
482 if(got < 0) {
483 perror("Debug leaking scalars parent read failed");
808ad2d0 484 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
485 abort();
486 }
808ad2d0 487 if(got < sizeof(returned_errno) + 1) {
41e4abd8 488 perror("Debug leaking scalars parent short read");
808ad2d0 489 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
490 abort();
491 }
492
808ad2d0
NC
493 if (*buffer) {
494 got = read(sock, buffer + 1, *buffer);
495 if(got < 0) {
496 perror("Debug leaking scalars parent read 2 failed");
497 PerlIO_flush(PerlIO_stderr());
498 abort();
499 }
500
501 if(got < *buffer) {
502 perror("Debug leaking scalars parent short read 2");
503 PerlIO_flush(PerlIO_stderr());
504 abort();
505 }
506 }
507
508 if (returned_errno || *buffer) {
509 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
510 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 511 returned_errno, Strerror(returned_errno));
41e4abd8
NC
512 }
513}
514#endif
515
62375a60 516/*
954c1994
GS
517=for apidoc perl_destruct
518
519Shuts down a Perl interpreter. See L<perlembed>.
520
521=cut
522*/
523
31d77e54 524int
0cb96387 525perl_destruct(pTHXx)
79072805 526{
27da23d5 527 dVAR;
be2ea8ed 528 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 529 HV *hv;
2aa47728 530#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
531 pid_t child;
532#endif
9c0b6888 533 int i;
8990e307 534
7918f24d
NC
535 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536#ifndef MULTIPLICITY
ed6c66dd 537 PERL_UNUSED_ARG(my_perl);
7918f24d 538#endif
9d4ba2ae 539
3d22c4f0
GG
540 assert(PL_scopestack_ix == 1);
541
7766f137
GS
542 /* wait for all pseudo-forked children to finish */
543 PERL_WAIT_FOR_CHILDREN;
544
3280af22 545 destruct_level = PL_perl_destruct_level;
36e77d41 546#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 547 {
9d4ba2ae
AL
548 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
549 if (s) {
96e440d2
JH
550 int i;
551 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
552 i = -1;
553 } else {
22ff3130
HS
554 UV uv;
555 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
556 i = (int)uv;
557 else
558 i = 0;
96e440d2 559 }
36e77d41
DD
560#ifdef DEBUGGING
561 if (destruct_level < i) destruct_level = i;
562#endif
563#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
564 /* RT #114496, for perl_free */
565 PL_perl_destruct_level = i;
36e77d41 566#endif
5f05dabc 567 }
4633a7c4
LW
568 }
569#endif
570
27da23d5 571 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
572 dJMPENV;
573 int x = 0;
574
575 JMPENV_PUSH(x);
1b6737cc 576 PERL_UNUSED_VAR(x);
9ebf26ad 577 if (PL_endav && !PL_minus_c) {
ca7b837b 578 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 579 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 580 }
f3faeb53 581 JMPENV_POP;
26f423df 582 }
f3faeb53 583 LEAVE;
a0d0e21e 584 FREETMPS;
3d22c4f0 585 assert(PL_scopestack_ix == 0);
a0d0e21e 586
e00b64d4 587 /* Need to flush since END blocks can produce output */
8abddda3
TC
588 /* flush stdout separately, since we can identify it */
589#ifdef USE_PERLIO
590 {
591 PerlIO *stdo = PerlIO_stdout();
592 if (*stdo && PerlIO_flush(stdo)) {
593 PerlIO_restore_errno(stdo);
594 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
595 Strerror(errno));
596 if (!STATUS_UNIX)
597 STATUS_ALL_FAILURE;
598 }
599 }
600#endif
f13a2bc0 601 my_fflush_all();
e00b64d4 602
75d476e2
SM
603#ifdef PERL_TRACE_OPS
604 /* If we traced all Perl OP usage, report and clean up */
605 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
606 for (i = 0; i <= OP_max; ++i) {
607 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
608 PL_op_exec_cnt[i] = 0;
609 }
610 /* Utility slot for easily doing little tracing experiments in the runloop: */
611 if (PL_op_exec_cnt[OP_max+1] != 0)
612 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
613 PerlIO_printf(Perl_debug_log, "\n");
614#endif
615
616
16c91539 617 if (PL_threadhook(aTHX)) {
62375a60 618 /* Threads hook has vetoed further cleanup */
c301d606 619 PL_veto_cleanup = TRUE;
37038d91 620 return STATUS_EXIT;
62375a60
NIS
621 }
622
2aa47728
NC
623#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
624 if (destruct_level != 0) {
625 /* Fork here to create a child. Our child's job is to preserve the
626 state of scalars prior to destruction, so that we can instruct it
627 to dump any scalars that we later find have leaked.
628 There's no subtlety in this code - it assumes POSIX, and it doesn't
629 fail gracefully */
630 int fd[2];
631
632 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
633 perror("Debug leaking scalars socketpair failed");
634 abort();
635 }
636
637 child = fork();
638 if(child == -1) {
639 perror("Debug leaking scalars fork failed");
640 abort();
641 }
642 if (!child) {
643 /* We are the child */
3125a5a4
NC
644 const int sock = fd[1];
645 const int debug_fd = PerlIO_fileno(Perl_debug_log);
646 int f;
808ad2d0
NC
647 const char *where;
648 /* Our success message is an integer 0, and a char 0 */
b61433a9 649 static const char success[sizeof(int) + 1] = {0};
3125a5a4 650
2aa47728 651 close(fd[0]);
2aa47728 652
3125a5a4
NC
653 /* We need to close all other file descriptors otherwise we end up
654 with interesting hangs, where the parent closes its end of a
655 pipe, and sits waiting for (another) child to terminate. Only
656 that child never terminates, because it never gets EOF, because
bf357333
NC
657 we also have the far end of the pipe open. We even need to
658 close the debugging fd, because sometimes it happens to be one
659 end of a pipe, and a process is waiting on the other end for
660 EOF. Normally it would be closed at some point earlier in
661 destruction, but if we happen to cause the pipe to remain open,
662 EOF never occurs, and we get an infinite hang. Hence all the
663 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
664
665 f = sysconf(_SC_OPEN_MAX);
666 if(f < 0) {
808ad2d0
NC
667 where = "sysconf failed";
668 goto abort;
3125a5a4
NC
669 }
670 while (f--) {
671 if (f == sock)
672 continue;
3125a5a4
NC
673 close(f);
674 }
675
2aa47728
NC
676 while (1) {
677 SV *target;
bf357333
NC
678 union control_un control;
679 struct msghdr msg;
680 struct iovec vec[1];
681 struct cmsghdr *cmptr;
682 ssize_t got;
683 int got_fd;
684
685 msg.msg_control = control.control;
686 msg.msg_controllen = sizeof(control.control);
687 /* We're a connected socket so we don't need a source */
688 msg.msg_name = NULL;
689 msg.msg_namelen = 0;
690 msg.msg_iov = vec;
c3caa5c3 691 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
692
693 vec[0].iov_base = (void*)&target;
694 vec[0].iov_len = sizeof(target);
695
696 got = recvmsg(sock, &msg, 0);
2aa47728
NC
697
698 if(got == 0)
699 break;
700 if(got < 0) {
808ad2d0
NC
701 where = "recv failed";
702 goto abort;
2aa47728
NC
703 }
704 if(got < sizeof(target)) {
808ad2d0
NC
705 where = "short recv";
706 goto abort;
2aa47728 707 }
bf357333 708
808ad2d0
NC
709 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
710 where = "no cmsg";
711 goto abort;
712 }
713 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
714 where = "wrong cmsg_len";
715 goto abort;
716 }
717 if(cmptr->cmsg_level != SOL_SOCKET) {
718 where = "wrong cmsg_level";
719 goto abort;
720 }
721 if(cmptr->cmsg_type != SCM_RIGHTS) {
722 where = "wrong cmsg_type";
723 goto abort;
724 }
bf357333
NC
725
726 got_fd = *(int*)CMSG_DATA(cmptr);
727 /* For our last little bit of trickery, put the file descriptor
728 back into Perl_debug_log, as if we never actually closed it
729 */
808ad2d0
NC
730 if(got_fd != debug_fd) {
731 if (dup2(got_fd, debug_fd) == -1) {
732 where = "dup2";
733 goto abort;
734 }
735 }
2aa47728 736 sv_dump(target);
bf357333 737
2aa47728
NC
738 PerlIO_flush(Perl_debug_log);
739
808ad2d0 740 got = write(sock, &success, sizeof(success));
2aa47728
NC
741
742 if(got < 0) {
808ad2d0
NC
743 where = "write failed";
744 goto abort;
2aa47728 745 }
808ad2d0
NC
746 if(got < sizeof(success)) {
747 where = "short write";
748 goto abort;
2aa47728
NC
749 }
750 }
751 _exit(0);
808ad2d0
NC
752 abort:
753 {
754 int send_errno = errno;
755 unsigned char length = (unsigned char) strlen(where);
756 struct iovec failure[3] = {
757 {(void*)&send_errno, sizeof(send_errno)},
758 {&length, 1},
759 {(void*)where, length}
760 };
761 int got = writev(sock, failure, 3);
762 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
763 in the parent if we try to read from the socketpair after the
764 child has exited, even if there was data to read.
765 So sleep a bit to give the parent a fighting chance of
766 reading the data. */
767 sleep(2);
768 _exit((got == -1) ? errno : 0);
769 }
bf357333 770 /* End of child. */
2aa47728 771 }
41e4abd8 772 PL_dumper_fd = fd[0];
2aa47728
NC
773 close(fd[1]);
774 }
775#endif
776
ff0cee69
PP
777 /* We must account for everything. */
778
779 /* Destroy the main CV and syntax tree */
37e77c23
FC
780 /* Set PL_curcop now, because destroying ops can cause new SVs
781 to be generated in Perl_pad_swipe, and when running with
782 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
783 op from which the filename structure member is copied. */
17fbfdf6 784 PL_curcop = &PL_compiling;
3280af22 785 if (PL_main_root) {
4e380990
DM
786 /* ensure comppad/curpad to refer to main's pad */
787 if (CvPADLIST(PL_main_cv)) {
788 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 789 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 790 }
3280af22 791 op_free(PL_main_root);
5f66b61c 792 PL_main_root = NULL;
a0d0e21e 793 }
5f66b61c 794 PL_main_start = NULL;
aac9d523
DM
795 /* note that PL_main_cv isn't usually actually freed at this point,
796 * due to the CvOUTSIDE refs from subs compiled within it. It will
797 * get freed once all the subs are freed in sv_clean_all(), for
798 * destruct_level > 0 */
3280af22 799 SvREFCNT_dec(PL_main_cv);
601f1833 800 PL_main_cv = NULL;
ca7b837b 801 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 802
13621cfb
NIS
803 /* Tell PerlIO we are about to tear things apart in case
804 we have layers which are using resources that should
805 be cleaned up now.
806 */
807
808 PerlIO_destruct(aTHX);
809
ddf23d4a
SM
810 /*
811 * Try to destruct global references. We do this first so that the
812 * destructors and destructees still exist. Some sv's might remain.
813 * Non-referenced objects are on their own.
814 */
815 sv_clean_objs();
8990e307 816
5cd24f17 817 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 818 SvREFCNT_dec(PL_warnhook);
a0714e2c 819 PL_warnhook = NULL;
3280af22 820 SvREFCNT_dec(PL_diehook);
a0714e2c 821 PL_diehook = NULL;
5cd24f17 822
4b556e6c 823 /* call exit list functions */
3280af22 824 while (PL_exitlistlen-- > 0)
acfe0abc 825 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 826
3280af22 827 Safefree(PL_exitlist);
4b556e6c 828
1c4916e5
CB
829 PL_exitlist = NULL;
830 PL_exitlistlen = 0;
831
a3e6e81e
NC
832 SvREFCNT_dec(PL_registered_mros);
833
551a8b83 834 /* jettison our possibly duplicated environment */
4b647fb0
DM
835 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
836 * so we certainly shouldn't free it here
837 */
2f42fcb0 838#ifndef PERL_MICRO
4b647fb0 839#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 840 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
841#ifdef USE_ITHREADS
842 /* only main thread can free environ[0] contents */
843 && PL_curinterp == aTHX
844#endif
845 )
846 {
551a8b83
JH
847 I32 i;
848
849 for (i = 0; environ[i]; i++)
4b420006 850 safesysfree(environ[i]);
0631ea03 851
4b420006
JH
852 /* Must use safesysfree() when working with environ. */
853 safesysfree(environ);
551a8b83
JH
854
855 environ = PL_origenviron;
856 }
857#endif
2f42fcb0 858#endif /* !PERL_MICRO */
551a8b83 859
30985c42
JH
860 if (destruct_level == 0) {
861
862 DEBUG_P(debprofdump());
863
864#if defined(PERLIO_LAYERS)
865 /* No more IO - including error messages ! */
866 PerlIO_cleanup(aTHX);
867#endif
868
869 CopFILE_free(&PL_compiling);
30985c42
JH
870
871 /* The exit() function will do everything that needs doing. */
872 return STATUS_EXIT;
873 }
874
9fa9f06b
KW
875 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
876
5f8cb046
DM
877#ifdef USE_ITHREADS
878 /* the syntax tree is shared between clones
879 * so op_free(PL_main_root) only ReREFCNT_dec's
880 * REGEXPs in the parent interpreter
881 * we need to manually ReREFCNT_dec for the clones
882 */
0547a729
DM
883 {
884 I32 i = AvFILLp(PL_regex_padav);
885 SV **ary = AvARRAY(PL_regex_padav);
886
887 for (; i; i--) {
888 SvREFCNT_dec(ary[i]);
889 ary[i] = &PL_sv_undef;
890 }
891 }
5f8cb046
DM
892#endif
893
0547a729 894
ad64d0ec 895 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
896 PL_stashcache = NULL;
897
5f05dabc
PP
898 /* loosen bonds of global variables */
899
2f9285f8
DM
900 /* XXX can PL_parser still be non-null here? */
901 if(PL_parser && PL_parser->rsfp) {
902 (void)PerlIO_close(PL_parser->rsfp);
903 PL_parser->rsfp = NULL;
8ebc5c01
PP
904 }
905
84386e14
RGS
906 if (PL_minus_F) {
907 Safefree(PL_splitstr);
908 PL_splitstr = NULL;
909 }
910
8ebc5c01 911 /* switches */
3280af22
NIS
912 PL_minus_n = FALSE;
913 PL_minus_p = FALSE;
914 PL_minus_l = FALSE;
915 PL_minus_a = FALSE;
916 PL_minus_F = FALSE;
917 PL_doswitches = FALSE;
599cee73 918 PL_dowarn = G_WARN_OFF;
1a904fc8 919#ifdef PERL_SAWAMPERSAND
d3b97530 920 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 921#endif
3280af22
NIS
922 PL_unsafe = FALSE;
923
924 Safefree(PL_inplace);
bd61b366 925 PL_inplace = NULL;
a7cb1f99 926 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
927
928 if (PL_e_script) {
929 SvREFCNT_dec(PL_e_script);
a0714e2c 930 PL_e_script = NULL;
8ebc5c01
PP
931 }
932
bf9cdc68
RG
933 PL_perldb = 0;
934
8ebc5c01
PP
935 /* magical thingies */
936
e23d9e2f
CS
937 SvREFCNT_dec(PL_ofsgv); /* *, */
938 PL_ofsgv = NULL;
5f05dabc 939
7889fe52 940 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 941 PL_ors_sv = NULL;
8ebc5c01 942
3280af22 943 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 944 PL_rs = NULL;
dc92893f 945
d33b2eba 946 Safefree(PL_osname); /* $^O */
bd61b366 947 PL_osname = NULL;
5f05dabc 948
3280af22 949 SvREFCNT_dec(PL_statname);
a0714e2c
SS
950 PL_statname = NULL;
951 PL_statgv = NULL;
5f05dabc 952
8ebc5c01
PP
953 /* defgv, aka *_ should be taken care of elsewhere */
954
7d5ea4e7
GS
955 /* float buffer */
956 Safefree(PL_efloatbuf);
bd61b366 957 PL_efloatbuf = NULL;
7d5ea4e7
GS
958 PL_efloatsize = 0;
959
8ebc5c01 960 /* startup and shutdown function lists */
3280af22 961 SvREFCNT_dec(PL_beginav);
5a837c8f 962 SvREFCNT_dec(PL_beginav_save);
3280af22 963 SvREFCNT_dec(PL_endav);
7d30b5c4 964 SvREFCNT_dec(PL_checkav);
ece599bd 965 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
966 SvREFCNT_dec(PL_unitcheckav);
967 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 968 SvREFCNT_dec(PL_initav);
7d49f689
NC
969 PL_beginav = NULL;
970 PL_beginav_save = NULL;
971 PL_endav = NULL;
972 PL_checkav = NULL;
973 PL_checkav_save = NULL;
3c10abe3
AG
974 PL_unitcheckav = NULL;
975 PL_unitcheckav_save = NULL;
7d49f689 976 PL_initav = NULL;
5618dfe8 977
8ebc5c01 978 /* shortcuts just get cleared */
a0714e2c
SS
979 PL_hintgv = NULL;
980 PL_errgv = NULL;
a0714e2c
SS
981 PL_argvoutgv = NULL;
982 PL_stdingv = NULL;
983 PL_stderrgv = NULL;
984 PL_last_in_gv = NULL;
a0714e2c
SS
985 PL_DBsingle = NULL;
986 PL_DBtrace = NULL;
987 PL_DBsignal = NULL;
a6d69523
TC
988 PL_DBsingle_iv = 0;
989 PL_DBtrace_iv = 0;
990 PL_DBsignal_iv = 0;
601f1833 991 PL_DBcv = NULL;
7d49f689 992 PL_dbargs = NULL;
5c284bb0 993 PL_debstash = NULL;
8ebc5c01 994
cf93a474 995 SvREFCNT_dec(PL_envgv);
f03015cd 996 SvREFCNT_dec(PL_incgv);
722fa0e9 997 SvREFCNT_dec(PL_argvgv);
475b1e90 998 SvREFCNT_dec(PL_replgv);
8cece913
FC
999 SvREFCNT_dec(PL_DBgv);
1000 SvREFCNT_dec(PL_DBline);
1001 SvREFCNT_dec(PL_DBsub);
cf93a474 1002 PL_envgv = NULL;
f03015cd 1003 PL_incgv = NULL;
722fa0e9 1004 PL_argvgv = NULL;
475b1e90 1005 PL_replgv = NULL;
8cece913
FC
1006 PL_DBgv = NULL;
1007 PL_DBline = NULL;
1008 PL_DBsub = NULL;
1009
7a1c5554 1010 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1011 PL_argvout_stack = NULL;
8ebc5c01 1012
5c831c24 1013 SvREFCNT_dec(PL_modglobal);
5c284bb0 1014 PL_modglobal = NULL;
5c831c24 1015 SvREFCNT_dec(PL_preambleav);
7d49f689 1016 PL_preambleav = NULL;
5c831c24 1017 SvREFCNT_dec(PL_subname);
a0714e2c 1018 PL_subname = NULL;
ca0c25f6 1019#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1020 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1021 PL_pidstatus = NULL;
ca0c25f6 1022#endif
5c831c24 1023 SvREFCNT_dec(PL_toptarget);
a0714e2c 1024 PL_toptarget = NULL;
5c831c24 1025 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1026 PL_bodytarget = NULL;
1027 PL_formtarget = NULL;
5c831c24 1028
d33b2eba 1029 /* free locale stuff */
b9582b6a 1030#ifdef USE_LOCALE_COLLATE
d33b2eba 1031 Safefree(PL_collation_name);
bd61b366 1032 PL_collation_name = NULL;
b9582b6a 1033#endif
d33b2eba 1034
b9582b6a 1035#ifdef USE_LOCALE_NUMERIC
d33b2eba 1036 Safefree(PL_numeric_name);
bd61b366 1037 PL_numeric_name = NULL;
a453c169 1038 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1039 PL_numeric_radix_sv = NULL;
b9582b6a 1040#endif
d33b2eba 1041
9c0b6888
KW
1042 /* clear character classes */
1043 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1044 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1045 PL_utf8_swash_ptrs[i] = NULL;
1046 }
5c831c24
GS
1047 SvREFCNT_dec(PL_utf8_mark);
1048 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1049 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1050 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1051 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1052 SvREFCNT_dec(PL_utf8_idstart);
1053 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1054 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1055 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1056 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1057 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1058 SvREFCNT_dec(PL_UpperLatin1);
1059 SvREFCNT_dec(PL_Latin1);
1060 SvREFCNT_dec(PL_NonL1NonFinalFold);
1061 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1062#ifdef USE_LOCALE_CTYPE
780fcc9f 1063 SvREFCNT_dec(PL_warn_locale);
5b7de470 1064#endif
a0714e2c
SS
1065 PL_utf8_mark = NULL;
1066 PL_utf8_toupper = NULL;
1067 PL_utf8_totitle = NULL;
1068 PL_utf8_tolower = NULL;
1069 PL_utf8_tofold = NULL;
1070 PL_utf8_idstart = NULL;
1071 PL_utf8_idcont = NULL;
2726813d 1072 PL_utf8_foldclosures = NULL;
9fa9f06b 1073 PL_AboveLatin1 = NULL;
e0a1ff7a 1074 PL_InBitmap = NULL;
9fa9f06b 1075 PL_HasMultiCharFold = NULL;
5b7de470 1076#ifdef USE_LOCALE_CTYPE
780fcc9f 1077 PL_warn_locale = NULL;
5b7de470 1078#endif
9fa9f06b
KW
1079 PL_Latin1 = NULL;
1080 PL_NonL1NonFinalFold = NULL;
1081 PL_UpperLatin1 = NULL;
86f72d56 1082 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1083 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1084 PL_XPosix_ptrs[i] = NULL;
86f72d56 1085 }
64935bc6 1086 PL_GCB_invlist = NULL;
6b659339 1087 PL_LB_invlist = NULL;
06ae2722 1088 PL_SB_invlist = NULL;
ae3bb8ea 1089 PL_WB_invlist = NULL;
5c831c24 1090
971a9dd3 1091 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1092 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1093 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1094 cophh_free(CopHINTHASH_get(&PL_compiling));
1095 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1096 CopFILE_free(&PL_compiling);
5c831c24 1097
a0d0e21e 1098 /* Prepare to destruct main symbol table. */
5f05dabc 1099
3280af22 1100 hv = PL_defstash;
ca556bcd
DM
1101 /* break ref loop *:: <=> %:: */
1102 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1103 PL_defstash = 0;
a0d0e21e 1104 SvREFCNT_dec(hv);
5c831c24 1105 SvREFCNT_dec(PL_curstname);
a0714e2c 1106 PL_curstname = NULL;
a0d0e21e 1107
5a844595
GS
1108 /* clear queued errors */
1109 SvREFCNT_dec(PL_errors);
a0714e2c 1110 PL_errors = NULL;
5a844595 1111
dd69841b
BB
1112 SvREFCNT_dec(PL_isarev);
1113
a0d0e21e 1114 FREETMPS;
9b387841 1115 if (destruct_level >= 2) {
3280af22 1116 if (PL_scopestack_ix != 0)
9b387841
NC
1117 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1118 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1119 (long)PL_scopestack_ix);
3280af22 1120 if (PL_savestack_ix != 0)
9b387841
NC
1121 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1122 "Unbalanced saves: %ld more saves than restores\n",
1123 (long)PL_savestack_ix);
3280af22 1124 if (PL_tmps_floor != -1)
9b387841
NC
1125 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1126 (long)PL_tmps_floor + 1);
a0d0e21e 1127 if (cxstack_ix != -1)
9b387841
NC
1128 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1129 (long)cxstack_ix + 1);
a0d0e21e 1130 }
8990e307 1131
0547a729
DM
1132#ifdef USE_ITHREADS
1133 SvREFCNT_dec(PL_regex_padav);
1134 PL_regex_padav = NULL;
1135 PL_regex_pad = NULL;
1136#endif
1137
776df701 1138#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1139 /* the entries in this list are allocated via SV PVX's, so get freed
1140 * in sv_clean_all */
1141 Safefree(PL_my_cxt_list);
776df701 1142#endif
57bb2458 1143
8990e307 1144 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1145
1146 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1147 while (sv_clean_all() > 2)
5226ed68
JH
1148 ;
1149
23083432
FC
1150#ifdef USE_ITHREADS
1151 Safefree(PL_stashpad); /* must come after sv_clean_all */
1152#endif
1153
d4777f27
GS
1154 AvREAL_off(PL_fdpid); /* no surviving entries */
1155 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1156 PL_fdpid = NULL;
d33b2eba 1157
6c644e78
GS
1158#ifdef HAVE_INTERP_INTERN
1159 sys_intern_clear();
1160#endif
1161
a38ab475
RZ
1162 /* constant strings */
1163 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1164 SvREFCNT_dec(PL_sv_consts[i]);
1165 PL_sv_consts[i] = NULL;
1166 }
1167
6e72f9df
PP
1168 /* Destruct the global string table. */
1169 {
1170 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1171 * so that sv_free() won't fail on them.
80459961
NC
1172 * Now that the global string table is using a single hunk of memory
1173 * for both HE and HEK, we either need to explicitly unshare it the
1174 * correct way, or actually free things here.
6e72f9df 1175 */
80459961
NC
1176 I32 riter = 0;
1177 const I32 max = HvMAX(PL_strtab);
c4420975 1178 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1179 HE *hent = array[0];
1180
6e72f9df 1181 for (;;) {
0453d815 1182 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1183 HE * const next = HeNEXT(hent);
9014280d 1184 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1185 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1186 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1187 Safefree(hent);
1188 hent = next;
6e72f9df
PP
1189 }
1190 if (!hent) {
1191 if (++riter > max)
1192 break;
1193 hent = array[riter];
1194 }
1195 }
80459961
NC
1196
1197 Safefree(array);
1198 HvARRAY(PL_strtab) = 0;
1199 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1200 }
3280af22 1201 SvREFCNT_dec(PL_strtab);
6e72f9df 1202
e652bb2f 1203#ifdef USE_ITHREADS
c21d1a0f 1204 /* free the pointer tables used for cloning */
a0739874 1205 ptr_table_free(PL_ptr_table);
bf9cdc68 1206 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1207#endif
a0739874 1208
d33b2eba
GS
1209 /* free special SVs */
1210
1211 SvREFCNT(&PL_sv_yes) = 0;
1212 sv_clear(&PL_sv_yes);
1213 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1214 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1215
1216 SvREFCNT(&PL_sv_no) = 0;
1217 sv_clear(&PL_sv_no);
1218 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1219 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1220
9f375a43
DM
1221 {
1222 int i;
1223 for (i=0; i<=2; i++) {
1224 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1225 sv_clear(PERL_DEBUG_PAD(i));
1226 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1227 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1228 }
1229 }
1230
0453d815 1231 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1232 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1233
eba0f806
DM
1234#ifdef DEBUG_LEAKING_SCALARS
1235 if (PL_sv_count != 0) {
1236 SV* sva;
1237 SV* sv;
eb578fdb 1238 SV* svend;
eba0f806 1239
ad64d0ec 1240 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1241 svend = &sva[SvREFCNT(sva)];
1242 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1243 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1244 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1245 " flags=0x%"UVxf
fd0854ff 1246 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1247 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1248 "serial %"UVuf"\n",
574b8821
NC
1249 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1250 pTHX__VALUE,
fd0854ff
DM
1251 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1252 sv->sv_debug_line,
1253 sv->sv_debug_inpad ? "for" : "by",
1254 sv->sv_debug_optype ?
1255 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1256 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1257 sv->sv_debug_serial
fd0854ff 1258 );
2aa47728 1259#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1260 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1261#endif
eba0f806
DM
1262 }
1263 }
1264 }
1265 }
2aa47728
NC
1266#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1267 {
1268 int status;
1269 fd_set rset;
1270 /* Wait for up to 4 seconds for child to terminate.
1271 This seems to be the least effort way of timing out on reaping
1272 its exit status. */
1273 struct timeval waitfor = {4, 0};
41e4abd8 1274 int sock = PL_dumper_fd;
2aa47728
NC
1275
1276 shutdown(sock, 1);
1277 FD_ZERO(&rset);
1278 FD_SET(sock, &rset);
1279 select(sock + 1, &rset, NULL, NULL, &waitfor);
1280 waitpid(child, &status, WNOHANG);
1281 close(sock);
1282 }
1283#endif
eba0f806 1284#endif
77abb4c6
NC
1285#ifdef DEBUG_LEAKING_SCALARS_ABORT
1286 if (PL_sv_count)
1287 abort();
1288#endif
bf9cdc68 1289 PL_sv_count = 0;
eba0f806 1290
56a2bab7 1291#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1292 /* No more IO - including error messages ! */
1293 PerlIO_cleanup(aTHX);
1294#endif
1295
9f4bd222 1296 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1297 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1298 for no arg - and will try and SvREFCNT_dec it.
1299 */
1300 SvREFCNT(&PL_sv_undef) = 0;
1301 SvREADONLY_off(&PL_sv_undef);
1302
3280af22 1303 Safefree(PL_origfilename);
bd61b366 1304 PL_origfilename = NULL;
43c5f42d 1305 Safefree(PL_reg_curpm);
dd28f7bb 1306 free_tied_hv_pool();
3280af22 1307 Safefree(PL_op_mask);
cf36064f 1308 Safefree(PL_psig_name);
bf9cdc68 1309 PL_psig_name = (SV**)NULL;
d525a7b2 1310 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1311 {
1312 /* We need to NULL PL_psig_pend first, so that
1313 signal handlers know not to use it */
1314 int *psig_save = PL_psig_pend;
1315 PL_psig_pend = (int*)NULL;
1316 Safefree(psig_save);
1317 }
6e72f9df 1318 nuke_stacks();
284167a5
SM
1319 TAINTING_set(FALSE);
1320 TAINT_WARN_set(FALSE);
3280af22 1321 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1322
a0d0e21e 1323 DEBUG_P(debprofdump());
d33b2eba 1324
b173165c
FC
1325 PL_debug = 0;
1326
e5dd39fc 1327#ifdef USE_REENTRANT_API
10bc17b6 1328 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1329#endif
1330
a24da70b
NC
1331 /* These all point to HVs that are about to be blown away.
1332 Code in core and on CPAN assumes that if the interpreter is re-started
1333 that they will be cleanly NULL or pointing to a valid HV. */
1334 PL_custom_op_names = NULL;
1335 PL_custom_op_descs = NULL;
1336 PL_custom_ops = NULL;
1337
612f20c3
GS
1338 sv_free_arenas();
1339
5d9a96ca
DM
1340 while (PL_regmatch_slab) {
1341 regmatch_slab *s = PL_regmatch_slab;
1342 PL_regmatch_slab = PL_regmatch_slab->next;
1343 Safefree(s);
1344 }
1345
fc36a67e
PP
1346 /* As the absolutely last thing, free the non-arena SV for mess() */
1347
3280af22 1348 if (PL_mess_sv) {
f350b448
NC
1349 /* we know that type == SVt_PVMG */
1350
9c63abab 1351 /* it could have accumulated taint magic */
f350b448
NC
1352 MAGIC* mg;
1353 MAGIC* moremagic;
1354 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1355 moremagic = mg->mg_moremagic;
1356 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1357 && mg->mg_len >= 0)
1358 Safefree(mg->mg_ptr);
1359 Safefree(mg);
9c63abab 1360 }
f350b448 1361
fc36a67e 1362 /* we know that type >= SVt_PV */
8bd4d4c5 1363 SvPV_free(PL_mess_sv);
3280af22
NIS
1364 Safefree(SvANY(PL_mess_sv));
1365 Safefree(PL_mess_sv);
a0714e2c 1366 PL_mess_sv = NULL;
fc36a67e 1367 }
37038d91 1368 return STATUS_EXIT;
79072805
LW
1369}
1370
954c1994
GS
1371/*
1372=for apidoc perl_free
1373
1374Releases a Perl interpreter. See L<perlembed>.
1375
1376=cut
1377*/
1378
79072805 1379void
0cb96387 1380perl_free(pTHXx)
79072805 1381{
5174512c
NC
1382 dVAR;
1383
7918f24d
NC
1384 PERL_ARGS_ASSERT_PERL_FREE;
1385
c301d606
DM
1386 if (PL_veto_cleanup)
1387 return;
1388
7cb608b5 1389#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1390 {
1391 /*
1392 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1393 * value as we're probably hunting memory leaks then
1394 */
36e77d41 1395 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1396 const U32 old_debug = PL_debug;
55ef9aae
MHM
1397 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1398 thread at thread exit. */
4fd0a9b8
NC
1399 if (DEBUG_m_TEST) {
1400 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1401 "free this thread's memory\n");
1402 PL_debug &= ~ DEBUG_m_FLAG;
1403 }
6edcbed6
DD
1404 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1405 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1406 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1407 safesysfree(ptr);
1408 }
4fd0a9b8 1409 PL_debug = old_debug;
55ef9aae
MHM
1410 }
1411 }
7cb608b5
NC
1412#endif
1413
acfe0abc 1414#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1415# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1416 {
acfe0abc 1417# ifdef NETWARE
7af12a34 1418 void *host = nw_internal_host;
7af12a34 1419 PerlMem_free(aTHXx);
7af12a34 1420 nw_delete_internal_host(host);
acfe0abc 1421# else
bdb50480
NC
1422 void *host = w32_internal_host;
1423 PerlMem_free(aTHXx);
7af12a34 1424 win32_delete_internal_host(host);
acfe0abc 1425# endif
7af12a34 1426 }
1c0ca838
GS
1427# else
1428 PerlMem_free(aTHXx);
1429# endif
acfe0abc
GS
1430#else
1431 PerlMem_free(aTHXx);
76e3520e 1432#endif
79072805
LW
1433}
1434
b7f7fff6 1435#if defined(USE_ITHREADS)
aebd1ac7
GA
1436/* provide destructors to clean up the thread key when libperl is unloaded */
1437#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1438
826955bd 1439#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1440#pragma fini "perl_fini"
666ad1ec
GA
1441#elif defined(__sun) && !defined(__GNUC__)
1442#pragma fini (perl_fini)
aebd1ac7
GA
1443#endif
1444
0dbb1585
AL
1445static void
1446#if defined(__GNUC__)
1447__attribute__((destructor))
aebd1ac7 1448#endif
de009b76 1449perl_fini(void)
aebd1ac7 1450{
27da23d5 1451 dVAR;
5c64bffd
NC
1452 if (
1453#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1454 my_vars &&
1455#endif
1456 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1457 FREE_THREAD_KEY;
1458}
1459
1460#endif /* WIN32 */
1461#endif /* THREADS */
1462
4b556e6c 1463void
864dbfa3 1464Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1465{
3280af22
NIS
1466 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1467 PL_exitlist[PL_exitlistlen].fn = fn;
1468 PL_exitlist[PL_exitlistlen].ptr = ptr;
1469 ++PL_exitlistlen;
4b556e6c
JD
1470}
1471
954c1994
GS
1472/*
1473=for apidoc perl_parse
1474
1475Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1476
1477=cut
1478*/
1479
03d9f026
FC
1480#define SET_CURSTASH(newstash) \
1481 if (PL_curstash != newstash) { \
1482 SvREFCNT_dec(PL_curstash); \
1483 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1484 }
1485
79072805 1486int
0cb96387 1487perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1488{
27da23d5 1489 dVAR;
6224f72b 1490 I32 oldscope;
6224f72b 1491 int ret;
db36c5a1 1492 dJMPENV;
8d063cd8 1493
7918f24d
NC
1494 PERL_ARGS_ASSERT_PERL_PARSE;
1495#ifndef MULTIPLICITY
ed6c66dd 1496 PERL_UNUSED_ARG(my_perl);
7918f24d 1497#endif
7dc86639 1498#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1499 {
7dc86639
YO
1500 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1501
22ff3130 1502 if (s && strEQ(s, "1")) {
25c1b134
TC
1503 const unsigned char *seed= PERL_HASH_SEED;
1504 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1505 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1506 while (seed < seed_end) {
1507 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1508 }
6a5b4183
YO
1509#ifdef PERL_HASH_RANDOMIZE_KEYS
1510 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1511 PL_HASH_RAND_BITS_ENABLED,
1512 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1513#endif
7dc86639
YO
1514 PerlIO_printf(Perl_debug_log, "\n");
1515 }
b0891165
JH
1516 }
1517#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
43238333 1518
ea34f6bd 1519#ifdef __amigaos4__
43238333
AB
1520 {
1521 struct NameTranslationInfo nti;
1522 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1523 }
1524#endif
1525
3280af22 1526 PL_origargc = argc;
e2975953 1527 PL_origargv = argv;
a0d0e21e 1528
a2722ac9
GA
1529 if (PL_origalen != 0) {
1530 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1531 }
1532 else {
3cb9023d
JH
1533 /* Set PL_origalen be the sum of the contiguous argv[]
1534 * elements plus the size of the env in case that it is
e9137a8e 1535 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1536 * as the maximum modifiable length of $0. In the worst case
1537 * the area we are able to modify is limited to the size of
43c32782 1538 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1539 * --jhi */
e1ec3a88 1540 const char *s = NULL;
54bfe034 1541 int i;
b7249aaf 1542 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1543 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1544 const UV aligned =
43c32782
JH
1545 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1546
1547 /* See if all the arguments are contiguous in memory. Note
1548 * that 'contiguous' is a loose term because some platforms
1549 * align the argv[] and the envp[]. If the arguments look
1550 * like non-aligned, assume that they are 'strictly' or
1551 * 'traditionally' contiguous. If the arguments look like
1552 * aligned, we just check that they are within aligned
1553 * PTRSIZE bytes. As long as no system has something bizarre
1554 * like the argv[] interleaved with some other data, we are
1555 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1556 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1557 while (*s) s++;
1558 for (i = 1; i < PL_origargc; i++) {
1559 if ((PL_origargv[i] == s + 1
43c32782 1560#ifdef OS2
c8941eeb 1561 || PL_origargv[i] == s + 2
43c32782 1562#endif
c8941eeb
JH
1563 )
1564 ||
1565 (aligned &&
1566 (PL_origargv[i] > s &&
1567 PL_origargv[i] <=
1568 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1569 )
1570 {
1571 s = PL_origargv[i];
1572 while (*s) s++;
1573 }
1574 else
1575 break;
54bfe034 1576 }
54bfe034 1577 }
a4a109c2
JD
1578
1579#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1580 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1581 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1582 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1583 ||
1584 (aligned &&
1585 (PL_origenviron[0] > s &&
1586 PL_origenviron[0] <=
1587 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1588 )
1589 {
9d419b5f 1590#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1591 s = PL_origenviron[0];
1592 while (*s) s++;
1593#endif
bd61b366 1594 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1595 /* Force copy of environment. */
1596 for (i = 1; PL_origenviron[i]; i++) {
1597 if (PL_origenviron[i] == s + 1
1598 ||
1599 (aligned &&
1600 (PL_origenviron[i] > s &&
1601 PL_origenviron[i] <=
1602 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1603 )
1604 {
1605 s = PL_origenviron[i];
1606 while (*s) s++;
1607 }
1608 else
1609 break;
54bfe034 1610 }
43c32782 1611 }
54bfe034 1612 }
a4a109c2
JD
1613#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1614
2d2af554 1615 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1616 }
1617
3280af22 1618 if (PL_do_undump) {
a0d0e21e
LW
1619
1620 /* Come here if running an undumped a.out. */
1621
3280af22
NIS
1622 PL_origfilename = savepv(argv[0]);
1623 PL_do_undump = FALSE;
a0d0e21e 1624 cxstack_ix = -1; /* start label stack again */
748a9306 1625 init_ids();
284167a5 1626 assert (!TAINT_get);
b7975bdd 1627 TAINT;
e2051532 1628 set_caret_X();
b7975bdd 1629 TAINT_NOT;
a0d0e21e
LW
1630 init_postdump_symbols(argc,argv,env);
1631 return 0;
1632 }
1633
3280af22 1634 if (PL_main_root) {
3280af22 1635 op_free(PL_main_root);
5f66b61c 1636 PL_main_root = NULL;
ff0cee69 1637 }
5f66b61c 1638 PL_main_start = NULL;
3280af22 1639 SvREFCNT_dec(PL_main_cv);
601f1833 1640 PL_main_cv = NULL;
79072805 1641
3280af22
NIS
1642 time(&PL_basetime);
1643 oldscope = PL_scopestack_ix;
599cee73 1644 PL_dowarn = G_WARN_OFF;
f86702cc 1645
14dd3ad8 1646 JMPENV_PUSH(ret);
6224f72b 1647 switch (ret) {
312caa8e 1648 case 0:
14dd3ad8 1649 parse_body(env,xsinit);
9ebf26ad 1650 if (PL_unitcheckav) {
3c10abe3 1651 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1652 }
1653 if (PL_checkav) {
ca7b837b 1654 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1655 call_list(oldscope, PL_checkav);
9ebf26ad 1656 }
14dd3ad8
GS
1657 ret = 0;
1658 break;
6224f72b
GS
1659 case 1:
1660 STATUS_ALL_FAILURE;
924ba076 1661 /* FALLTHROUGH */
6224f72b
GS
1662 case 2:
1663 /* my_exit() was called */
3280af22 1664 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1665 LEAVE;
1666 FREETMPS;
03d9f026 1667 SET_CURSTASH(PL_defstash);
9ebf26ad 1668 if (PL_unitcheckav) {
3c10abe3 1669 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1670 }
1671 if (PL_checkav) {
ca7b837b 1672 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1673 call_list(oldscope, PL_checkav);
9ebf26ad 1674 }
37038d91 1675 ret = STATUS_EXIT;
14dd3ad8 1676 break;
6224f72b 1677 case 3:
bf49b057 1678 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1679 ret = 1;
1680 break;
6224f72b 1681 }
14dd3ad8
GS
1682 JMPENV_POP;
1683 return ret;
1684}
1685
4a5df386
NC
1686/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1687 miniperl, and we need to see those flags reflected in the values here. */
1688
1689/* What this returns is subject to change. Use the public interface in Config.
1690 */
1691static void
1692S_Internals_V(pTHX_ CV *cv)
1693{
1694 dXSARGS;
1695#ifdef LOCAL_PATCH_COUNT
1696 const int local_patch_count = LOCAL_PATCH_COUNT;
1697#else
1698 const int local_patch_count = 0;
1699#endif
2dc296d2 1700 const int entries = 3 + local_patch_count;
4a5df386 1701 int i;
fe1c5936 1702 static const char non_bincompat_options[] =
4a5df386
NC
1703# ifdef DEBUGGING
1704 " DEBUGGING"
1705# endif
1706# ifdef NO_MATHOMS
0d311fbe 1707 " NO_MATHOMS"
4a5df386 1708# endif
59b86f4b
DM
1709# ifdef NO_HASH_SEED
1710 " NO_HASH_SEED"
1711# endif
3b0e4ee2
MB
1712# ifdef NO_TAINT_SUPPORT
1713 " NO_TAINT_SUPPORT"
1714# endif
cb26ef7a
MB
1715# ifdef PERL_BOOL_AS_CHAR
1716 " PERL_BOOL_AS_CHAR"
1717# endif
93c10d60
FC
1718# ifdef PERL_COPY_ON_WRITE
1719 " PERL_COPY_ON_WRITE"
1720# endif
4a5df386
NC
1721# ifdef PERL_DISABLE_PMC
1722 " PERL_DISABLE_PMC"
1723# endif
1724# ifdef PERL_DONT_CREATE_GVSV
1725 " PERL_DONT_CREATE_GVSV"
1726# endif
9a044a43
NC
1727# ifdef PERL_EXTERNAL_GLOB
1728 " PERL_EXTERNAL_GLOB"
1729# endif
59b86f4b
DM
1730# ifdef PERL_HASH_FUNC_SIPHASH
1731 " PERL_HASH_FUNC_SIPHASH"
1732# endif
1733# ifdef PERL_HASH_FUNC_SDBM
1734 " PERL_HASH_FUNC_SDBM"
1735# endif
1736# ifdef PERL_HASH_FUNC_DJB2
1737 " PERL_HASH_FUNC_DJB2"
1738# endif
1739# ifdef PERL_HASH_FUNC_SUPERFAST
1740 " PERL_HASH_FUNC_SUPERFAST"
1741# endif
1742# ifdef PERL_HASH_FUNC_MURMUR3
1743 " PERL_HASH_FUNC_MURMUR3"
1744# endif
1745# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1746 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1747# endif
1748# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1749 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1750# endif
1751# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1752 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1753# endif
4a5df386
NC
1754# ifdef PERL_IS_MINIPERL
1755 " PERL_IS_MINIPERL"
1756# endif
1757# ifdef PERL_MALLOC_WRAP
1758 " PERL_MALLOC_WRAP"
1759# endif
1760# ifdef PERL_MEM_LOG
1761 " PERL_MEM_LOG"
1762# endif
1763# ifdef PERL_MEM_LOG_NOIMPL
1764 " PERL_MEM_LOG_NOIMPL"
1765# endif
59b86f4b
DM
1766# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1767 " PERL_PERTURB_KEYS_DETERMINISTIC"
1768# endif
1769# ifdef PERL_PERTURB_KEYS_DISABLED
1770 " PERL_PERTURB_KEYS_DISABLED"
1771# endif
1772# ifdef PERL_PERTURB_KEYS_RANDOM
1773 " PERL_PERTURB_KEYS_RANDOM"
1774# endif
c3cf41ec
NC
1775# ifdef PERL_PRESERVE_IVUV
1776 " PERL_PRESERVE_IVUV"
1777# endif
c051e30b
NC
1778# ifdef PERL_RELOCATABLE_INCPUSH
1779 " PERL_RELOCATABLE_INCPUSH"
1780# endif
4a5df386
NC
1781# ifdef PERL_USE_DEVEL
1782 " PERL_USE_DEVEL"
1783# endif
1784# ifdef PERL_USE_SAFE_PUTENV
1785 " PERL_USE_SAFE_PUTENV"
1786# endif
a3749cf3
NC
1787# ifdef UNLINK_ALL_VERSIONS
1788 " UNLINK_ALL_VERSIONS"
1789# endif
de618ee4
NC
1790# ifdef USE_ATTRIBUTES_FOR_PERLIO
1791 " USE_ATTRIBUTES_FOR_PERLIO"
1792# endif
4a5df386
NC
1793# ifdef USE_FAST_STDIO
1794 " USE_FAST_STDIO"
1795# endif
59b86f4b
DM
1796# ifdef USE_HASH_SEED_EXPLICIT
1797 " USE_HASH_SEED_EXPLICIT"
1798# endif
98548bdf
NC
1799# ifdef USE_LOCALE
1800 " USE_LOCALE"
1801# endif
98548bdf
NC
1802# ifdef USE_LOCALE_CTYPE
1803 " USE_LOCALE_CTYPE"
1804# endif
6937817d
DD
1805# ifdef WIN32_NO_REGISTRY
1806 " USE_NO_REGISTRY"
1807# endif
5a8d8935
NC
1808# ifdef USE_PERL_ATOF
1809 " USE_PERL_ATOF"
1810# endif
0d311fbe
NC
1811# ifdef USE_SITECUSTOMIZE
1812 " USE_SITECUSTOMIZE"
1813# endif
4a5df386
NC
1814 ;
1815 PERL_UNUSED_ARG(cv);
d3db1514 1816 PERL_UNUSED_VAR(items);
4a5df386
NC
1817
1818 EXTEND(SP, entries);
1819
1820 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1821 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1822 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1823
6baa8dbd
NT
1824#ifndef PERL_BUILD_DATE
1825# ifdef __DATE__
1826# ifdef __TIME__
1827# define PERL_BUILD_DATE __DATE__ " " __TIME__
1828# else
1829# define PERL_BUILD_DATE __DATE__
1830# endif
1831# endif
1832#endif
1833
1834#ifdef PERL_BUILD_DATE
4a5df386 1835 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1836 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1837 SVs_TEMP));
4a5df386
NC
1838#else
1839 PUSHs(&PL_sv_undef);
1840#endif
1841
4a5df386
NC
1842 for (i = 1; i <= local_patch_count; i++) {
1843 /* This will be an undef, if PL_localpatches[i] is NULL. */
1844 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1845 }
1846
1847 XSRETURN(entries);
1848}
1849
be71fc8f
NC
1850#define INCPUSH_UNSHIFT 0x01
1851#define INCPUSH_ADD_OLD_VERS 0x02
1852#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1853#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1854#define INCPUSH_NOT_BASEDIR 0x10
1855#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1856#define INCPUSH_ADD_SUB_DIRS \
1857 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1858
312caa8e 1859STATIC void *
14dd3ad8 1860S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1861{
27da23d5 1862 dVAR;
2f9285f8 1863 PerlIO *rsfp;
312caa8e 1864 int argc = PL_origargc;
8f42b153 1865 char **argv = PL_origargv;
e1ec3a88 1866 const char *scriptname = NULL;
402582ca 1867 bool dosearch = FALSE;
eb578fdb 1868 char c;
737c24fc 1869 bool doextract = FALSE;
bd61b366 1870 const char *cddir = NULL;
ab019eaa 1871#ifdef USE_SITECUSTOMIZE
20ef40cf 1872 bool minus_f = FALSE;
ab019eaa 1873#endif
95670bde 1874 SV *linestr_sv = NULL;
5486870f 1875 bool add_read_e_script = FALSE;
87606032 1876 U32 lex_start_flags = 0;
009d90df 1877
ca7b837b 1878 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1879
6224f72b 1880 init_main_stash();
54310121 1881
c7030b81
NC
1882 {
1883 const char *s;
6224f72b
GS
1884 for (argc--,argv++; argc > 0; argc--,argv++) {
1885 if (argv[0][0] != '-' || !argv[0][1])
1886 break;
6224f72b
GS
1887 s = argv[0]+1;
1888 reswitch:
47f56822 1889 switch ((c = *s)) {
729a02f2 1890 case 'C':
1d5472a9
GS
1891#ifndef PERL_STRICT_CR
1892 case '\r':
1893#endif
6224f72b
GS
1894 case ' ':
1895 case '0':
1896 case 'F':
1897 case 'a':
1898 case 'c':
1899 case 'd':
1900 case 'D':
1901 case 'h':
1902 case 'i':
1903 case 'l':
1904 case 'M':
1905 case 'm':
1906 case 'n':
1907 case 'p':
1908 case 's':
1909 case 'u':
1910 case 'U':
1911 case 'v':
599cee73
PM
1912 case 'W':
1913 case 'X':
6224f72b 1914 case 'w':
97bd5664 1915 if ((s = moreswitches(s)))
6224f72b
GS
1916 goto reswitch;
1917 break;
33b78306 1918
1dbad523 1919 case 't':
dc6d7f5c 1920#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1921 /* silently ignore */
dc6d7f5c 1922#elif defined(NO_TAINT_SUPPORT)
3231f579 1923 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1924 "Cowardly refusing to run with -t or -T flags");
1925#else
22f7c9c9 1926 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1927 if( !TAINTING_get ) {
1928 TAINT_WARN_set(TRUE);
1929 TAINTING_set(TRUE);
317ea90d 1930 }
284167a5 1931#endif
317ea90d
MS
1932 s++;
1933 goto reswitch;
6224f72b 1934 case 'T':
dc6d7f5c 1935#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1936 /* silently ignore */
dc6d7f5c 1937#elif defined(NO_TAINT_SUPPORT)
3231f579 1938 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1939 "Cowardly refusing to run with -t or -T flags");
1940#else
22f7c9c9 1941 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1942 TAINTING_set(TRUE);
1943 TAINT_WARN_set(FALSE);
1944#endif
6224f72b
GS
1945 s++;
1946 goto reswitch;
f86702cc 1947
bc9b29db
RH
1948 case 'E':
1949 PL_minus_E = TRUE;
924ba076 1950 /* FALLTHROUGH */
6224f72b 1951 case 'e':
f20b2998 1952 forbid_setid('e', FALSE);
3280af22 1953 if (!PL_e_script) {
396482e1 1954 PL_e_script = newSVpvs("");
5486870f 1955 add_read_e_script = TRUE;
6224f72b
GS
1956 }
1957 if (*++s)
3280af22 1958 sv_catpv(PL_e_script, s);
6224f72b 1959 else if (argv[1]) {
3280af22 1960 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1961 argc--,argv++;
1962 }
1963 else
47f56822 1964 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1965 sv_catpvs(PL_e_script, "\n");
6224f72b 1966 break;
afe37c7d 1967
20ef40cf 1968 case 'f':
f5542d3a 1969#ifdef USE_SITECUSTOMIZE
20ef40cf 1970 minus_f = TRUE;
f5542d3a 1971#endif
20ef40cf
GA
1972 s++;
1973 goto reswitch;
1974
6224f72b 1975 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1976 forbid_setid('I', FALSE);
bd61b366 1977 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1978 argc--,argv++;
1979 }
6224f72b 1980 if (s && *s) {
0df16ed7 1981 STRLEN len = strlen(s);
55b4bc1c 1982 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1983 }
1984 else
a67e862a 1985 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1986 break;
6224f72b 1987 case 'S':
f20b2998 1988 forbid_setid('S', FALSE);
6224f72b
GS
1989 dosearch = TRUE;
1990 s++;
1991 goto reswitch;
1992 case 'V':
7edfd0ef
NC
1993 {
1994 SV *opts_prog;
1995
7edfd0ef 1996 if (*++s != ':') {
37ca4a5b 1997 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1998 }
1999 else {
2000 ++s;
2001 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2002 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2003 0, s, 0);
2004 s += strlen(s);
2005 }
37ca4a5b 2006 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2007 /* don't look for script or read stdin */
2008 scriptname = BIT_BUCKET;
2009 goto reswitch;
6224f72b 2010 }
6224f72b 2011 case 'x':
737c24fc 2012 doextract = TRUE;
6224f72b 2013 s++;
304334da 2014 if (*s)
f4c556ac 2015 cddir = s;
6224f72b
GS
2016 break;
2017 case 0:
2018 break;
2019 case '-':
2020 if (!*++s || isSPACE(*s)) {
2021 argc--,argv++;
2022 goto switch_end;
2023 }
ee8bc8b7
NC
2024 /* catch use of gnu style long options.
2025 Both of these exit immediately. */
2026 if (strEQ(s, "version"))
2027 minus_v();
2028 if (strEQ(s, "help"))
2029 usage();
6224f72b 2030 s--;
924ba076 2031 /* FALLTHROUGH */
6224f72b 2032 default:
cea2e8a9 2033 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2034 }
2035 }
c7030b81
NC
2036 }
2037
6224f72b 2038 switch_end:
54310121 2039
c7030b81
NC
2040 {
2041 char *s;
2042
f675dbe5
CB
2043 if (
2044#ifndef SECURE_INTERNAL_GETENV
284167a5 2045 !TAINTING_get &&
f675dbe5 2046#endif
cf756827 2047 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2048 {
9e0b0d62
KW
2049 /* s points to static memory in getenv(), which may be overwritten at
2050 * any time; use a mortal copy instead */
2051 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2052
74288ac8
GS
2053 while (isSPACE(*s))
2054 s++;
317ea90d 2055 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2056#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2057 /* silently ignore */
dc6d7f5c 2058#elif defined(NO_TAINT_SUPPORT)
3231f579 2059 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2060 "Cowardly refusing to run with -t or -T flags");
2061#else
22f7c9c9 2062 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2063 TAINTING_set(TRUE);
2064 TAINT_WARN_set(FALSE);
2065#endif
317ea90d 2066 }
74288ac8 2067 else {
bd61b366 2068 char *popt_copy = NULL;
74288ac8 2069 while (s && *s) {
54913509 2070 const char *d;
74288ac8
GS
2071 while (isSPACE(*s))
2072 s++;
2073 if (*s == '-') {
2074 s++;
2075 if (isSPACE(*s))
2076 continue;
2077 }
4ea8f8fb 2078 d = s;
74288ac8
GS
2079 if (!*s)
2080 break;
2b622f1a 2081 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2082 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2083 while (++s && *s) {
2084 if (isSPACE(*s)) {
cf756827 2085 if (!popt_copy) {
bfa6c418
NC
2086 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2087 s = popt_copy + (s - d);
2088 d = popt_copy;
cf756827 2089 }
4ea8f8fb
MS
2090 *s++ = '\0';
2091 break;
2092 }
2093 }
1c4db469 2094 if (*d == 't') {
dc6d7f5c 2095#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2096 /* silently ignore */
dc6d7f5c 2097#elif defined(NO_TAINT_SUPPORT)
3231f579 2098 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2099 "Cowardly refusing to run with -t or -T flags");
2100#else
2101 if( !TAINTING_get) {
2102 TAINT_WARN_set(TRUE);
2103 TAINTING_set(TRUE);
317ea90d 2104 }
284167a5 2105#endif
1c4db469 2106 } else {
97bd5664 2107 moreswitches(d);
1c4db469 2108 }
6224f72b 2109 }
6224f72b
GS
2110 }
2111 }
c7030b81 2112 }
a0d0e21e 2113
c29067d7
CH
2114 /* Set $^X early so that it can be used for relocatable paths in @INC */
2115 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2116 assert (!TAINT_get);
c29067d7 2117 TAINT;
e2051532 2118 set_caret_X();
c29067d7
CH
2119 TAINT_NOT;
2120
43c0c913 2121#if defined(USE_SITECUSTOMIZE)
20ef40cf 2122 if (!minus_f) {
43c0c913 2123 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2124 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2125 ie a q() operator with a NUL byte as a the delimiter. This avoids
2126 problems with pathnames containing (say) ' */
43c0c913
NC
2127# ifdef PERL_IS_MINIPERL
2128 AV *const inc = GvAV(PL_incgv);
2129 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2130
2131 if (inc0) {
15870c5c
NC
2132 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2133 it should be reported immediately as a build failure. */
43c0c913
NC
2134 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2135 Perl_newSVpvf(aTHX_
5de87db5 2136 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2137 "do {local $!; -f $f }"
2138 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2139 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2140 }
2141# else
2142 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2143 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2144 if (raw_sitelib) {
2145 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2146 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2147 INCPUSH_CAN_RELOCATE);
2148 const char *const sitelib = SvPVX(sitelib_sv);
2149 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2150 Perl_newSVpvf(aTHX_
2151 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2152 0, SVfARG(sitelib), 0,
2153 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2154 assert (SvREFCNT(sitelib_sv) == 1);
2155 SvREFCNT_dec(sitelib_sv);
2156 }
43c0c913 2157# endif
20ef40cf
GA
2158 }
2159#endif
2160
6224f72b
GS
2161 if (!scriptname)
2162 scriptname = argv[0];
3280af22 2163 if (PL_e_script) {
6224f72b
GS
2164 argc++,argv--;
2165 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2166 }
bd61b366 2167 else if (scriptname == NULL) {
6224f72b
GS
2168#ifdef MSDOS
2169 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2170 moreswitches("h");
6224f72b
GS
2171#endif
2172 scriptname = "-";
2173 }
2174
284167a5 2175 assert (!TAINT_get);
2cace6ac 2176 init_perllib();
6224f72b 2177
a52eba0e 2178 {
f20b2998 2179 bool suidscript = FALSE;
829372d3 2180
8d113837 2181 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2182 if (!rsfp) {
2183 rsfp = PerlIO_stdin();
87606032 2184 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2185 }
6224f72b 2186
b24bc095 2187 validate_suid(rsfp);
6224f72b 2188
64ca3a65 2189#ifndef PERL_MICRO
a52eba0e
NC
2190# if defined(SIGCHLD) || defined(SIGCLD)
2191 {
2192# ifndef SIGCHLD
2193# define SIGCHLD SIGCLD
2194# endif
2195 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2196 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2197 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2198 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2199 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2200 }
0b5b802d 2201 }
a52eba0e 2202# endif
64ca3a65 2203#endif
0b5b802d 2204
737c24fc 2205 if (doextract) {
faef540c 2206
f20b2998 2207 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2208 setuid scripts. */
2209 forbid_setid('x', suidscript);
f20b2998 2210 /* Hence you can't get here if suidscript is true */
faef540c 2211
95670bde
NC
2212 linestr_sv = newSV_type(SVt_PV);
2213 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2214 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2215 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2216 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2217 }
f4c556ac 2218 }
6224f72b 2219
ea726b52 2220 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2221 CvUNIQUE_on(PL_compcv);
2222
eacbb379 2223 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2224
dd69841b
BB
2225 PL_isarev = newHV();
2226
0c4f7ff0 2227 boot_core_PerlIO();
6224f72b 2228 boot_core_UNIVERSAL();
e1a479c5 2229 boot_core_mro();
4a5df386 2230 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2231
2232 if (xsinit)
acfe0abc 2233 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2234#ifndef PERL_MICRO
739a0b84 2235#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2236 init_os_extras();
6224f72b 2237#endif
64ca3a65 2238#endif
6224f72b 2239
29209bc5 2240#ifdef USE_SOCKS
1b9c9cf5
DH
2241# ifdef HAS_SOCKS5_INIT
2242 socks5_init(argv[0]);
2243# else
29209bc5 2244 SOCKSinit(argv[0]);
1b9c9cf5 2245# endif
ac27b0f5 2246#endif
29209bc5 2247
6224f72b
GS
2248 init_predump_symbols();
2249 /* init_postdump_symbols not currently designed to be called */
2250 /* more than once (ENV isn't cleared first, for example) */
2251 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2252 if (!PL_do_undump)
6224f72b
GS
2253 init_postdump_symbols(argc,argv,env);
2254
27da23d5
JH
2255 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2256 * or explicitly in some platforms.
085a54d9 2257 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2258 * look like the user wants to use UTF-8. */
a0fd4948 2259#if defined(__SYMBIAN32__)
27da23d5
JH
2260 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2261#endif
e27b5b51 2262# ifndef PERL_IS_MINIPERL
06e66572
JH
2263 if (PL_unicode) {
2264 /* Requires init_predump_symbols(). */
a05d7ebb 2265 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2266 IO* io;
2267 PerlIO* fp;
2268 SV* sv;
2269
a05d7ebb 2270 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2271 * and the default open disciplines. */
a05d7ebb
JH
2272 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2273 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2274 (fp = IoIFP(io)))
2275 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2276 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2277 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2278 (fp = IoOFP(io)))
2279 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2280 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2281 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2282 (fp = IoOFP(io)))
2283 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2284 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2285 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2286 SVt_PV)))) {
a05d7ebb
JH
2287 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2288 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2289 if (in) {
2290 if (out)
76f68e9b 2291 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2292 else
76f68e9b 2293 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2294 }
2295 else if (out)
76f68e9b 2296 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2297 SvSETMAGIC(sv);
2298 }
b310b053
JH
2299 }
2300 }
e27b5b51 2301#endif
b310b053 2302
c7030b81
NC
2303 {
2304 const char *s;
4ffa73a3
JH
2305 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2306 if (strEQ(s, "unsafe"))
2307 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2308 else if (strEQ(s, "safe"))
2309 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2310 else
2311 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2312 }
c7030b81 2313 }
4ffa73a3 2314
81d86705 2315
87606032 2316 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2317 SvREFCNT_dec(linestr_sv);
95670bde 2318
219f7226 2319 PL_subname = newSVpvs("main");
6224f72b 2320
5486870f
DM
2321 if (add_read_e_script)
2322 filter_add(read_e_script, NULL);
2323
6224f72b
GS
2324 /* now parse the script */
2325
93189314 2326 SETERRNO(0,SS_NORMAL);
28ac2b49 2327 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2328 if (PL_minus_c)
cea2e8a9 2329 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2330 else {
cea2e8a9 2331 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2332 PL_origfilename);
6224f72b
GS
2333 }
2334 }
57843af0 2335 CopLINE_set(PL_curcop, 0);
03d9f026 2336 SET_CURSTASH(PL_defstash);
3280af22
NIS
2337 if (PL_e_script) {
2338 SvREFCNT_dec(PL_e_script);
a0714e2c 2339 PL_e_script = NULL;
6224f72b
GS
2340 }
2341
3280af22 2342 if (PL_do_undump)
6224f72b
GS
2343 my_unexec();
2344
57843af0
GS
2345 if (isWARN_ONCE) {
2346 SAVECOPFILE(PL_curcop);
2347 SAVECOPLINE(PL_curcop);
3280af22 2348 gv_check(PL_defstash);
57843af0 2349 }
6224f72b
GS
2350
2351 LEAVE;
2352 FREETMPS;
2353
2354#ifdef MYMALLOC
f6a607bc
RGS
2355 {
2356 const char *s;
22ff3130
HS
2357 UV uv;
2358 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2359 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2360 dump_mstats("after compilation:");
f6a607bc 2361 }
6224f72b
GS
2362#endif
2363
2364 ENTER;
febb3a6d 2365 PL_restartjmpenv = NULL;
3280af22 2366 PL_restartop = 0;
312caa8e 2367 return NULL;
6224f72b
GS
2368}
2369
954c1994
GS
2370/*
2371=for apidoc perl_run
2372
2373Tells a Perl interpreter to run. See L<perlembed>.
2374
2375=cut
2376*/
2377
6224f72b 2378int
0cb96387 2379perl_run(pTHXx)
6224f72b 2380{
6224f72b 2381 I32 oldscope;
14dd3ad8 2382 int ret = 0;
db36c5a1 2383 dJMPENV;
6224f72b 2384
7918f24d
NC
2385 PERL_ARGS_ASSERT_PERL_RUN;
2386#ifndef MULTIPLICITY
ed6c66dd 2387 PERL_UNUSED_ARG(my_perl);
7918f24d 2388#endif
9d4ba2ae 2389
3280af22 2390 oldscope = PL_scopestack_ix;
96e176bf
CL
2391#ifdef VMS
2392 VMSISH_HUSHED = 0;
2393#endif
6224f72b 2394
14dd3ad8 2395 JMPENV_PUSH(ret);
6224f72b
GS
2396 switch (ret) {
2397 case 1:
2398 cxstack_ix = -1; /* start context stack again */
312caa8e 2399 goto redo_body;
14dd3ad8 2400 case 0: /* normal completion */
14dd3ad8
GS
2401 redo_body:
2402 run_body(oldscope);
924ba076 2403 /* FALLTHROUGH */
14dd3ad8 2404 case 2: /* my_exit() */
3280af22 2405 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2406 LEAVE;
2407 FREETMPS;
03d9f026 2408 SET_CURSTASH(PL_defstash);
3a1ee7e8 2409 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2410 PL_endav && !PL_minus_c) {
ca7b837b 2411 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2412 call_list(oldscope, PL_endav);
9ebf26ad 2413 }
6224f72b
GS
2414#ifdef MYMALLOC
2415 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2416 dump_mstats("after execution: ");
2417#endif
37038d91 2418 ret = STATUS_EXIT;
14dd3ad8 2419 break;
6224f72b 2420 case 3:
312caa8e
CS
2421 if (PL_restartop) {
2422 POPSTACK_TO(PL_mainstack);
2423 goto redo_body;
6224f72b 2424 }
5637ef5b 2425 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2426 FREETMPS;
14dd3ad8
GS
2427 ret = 1;
2428 break;
6224f72b
GS
2429 }
2430
14dd3ad8
GS
2431 JMPENV_POP;
2432 return ret;
312caa8e
CS
2433}
2434
dd374669 2435STATIC void
14dd3ad8
GS
2436S_run_body(pTHX_ I32 oldscope)
2437{
d3b97530
DM
2438 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2439 PL_sawampersand ? "Enabling" : "Omitting",
2440 (unsigned int)(PL_sawampersand)));
6224f72b 2441
3280af22 2442 if (!PL_restartop) {
cf2782cd 2443#ifdef DEBUGGING
f0e3f042
CS
2444 if (DEBUG_x_TEST || DEBUG_B_TEST)
2445 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2446 if (!DEBUG_q_TEST)
2447 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2448#endif
6224f72b 2449
3280af22 2450 if (PL_minus_c) {
bf49b057 2451 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2452 my_exit(0);
2453 }
3280af22 2454 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2455 PL_DBsingle_iv = 1;
9ebf26ad 2456 if (PL_initav) {
ca7b837b 2457 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2458 call_list(oldscope, PL_initav);
9ebf26ad 2459 }
f1fac472 2460#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2461 if (PL_main_root && PL_main_root->op_slabbed)
2462 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2463#endif
6224f72b
GS
2464 }
2465
2466 /* do it */
2467
ca7b837b 2468 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2469
3280af22 2470 if (PL_restartop) {
febb3a6d 2471 PL_restartjmpenv = NULL;
533c011a 2472 PL_op = PL_restartop;
3280af22 2473 PL_restartop = 0;
cea2e8a9 2474 CALLRUNOPS(aTHX);
6224f72b 2475 }
3280af22
NIS
2476 else if (PL_main_start) {
2477 CvDEPTH(PL_main_cv) = 1;
533c011a 2478 PL_op = PL_main_start;
cea2e8a9 2479 CALLRUNOPS(aTHX);
6224f72b 2480 }
f6b3007c 2481 my_exit(0);
e5964223 2482 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2483}
2484
954c1994 2485/*
ccfc67b7
JH
2486=head1 SV Manipulation Functions
2487
954c1994
GS
2488=for apidoc p||get_sv
2489
64ace3f8 2490Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2491C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2492Perl variable does not exist then it will be created. If C<flags> is zero
2493and the variable does not exist then NULL is returned.
954c1994
GS
2494
2495=cut
2496*/
2497
6224f72b 2498SV*
64ace3f8 2499Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2500{
2501 GV *gv;
7918f24d
NC
2502
2503 PERL_ARGS_ASSERT_GET_SV;
2504
64ace3f8 2505 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2506 if (gv)
2507 return GvSV(gv);
a0714e2c 2508 return NULL;
6224f72b
GS
2509}
2510
954c1994 2511/*
ccfc67b7
JH
2512=head1 Array Manipulation Functions
2513
954c1994
GS
2514=for apidoc p||get_av
2515
f0b90de1
SF
2516Returns the AV of the specified Perl global or package array with the given
2517name (so it won't work on lexical variables). C<flags> are passed
72d33970 2518to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2519Perl variable does not exist then it will be created. If C<flags> is zero
2520and the variable does not exist then NULL is returned.
954c1994 2521
f0b90de1
SF
2522Perl equivalent: C<@{"$name"}>.
2523
954c1994
GS
2524=cut
2525*/
2526
6224f72b 2527AV*
cbfd0a87 2528Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2529{
cbfd0a87 2530 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2531
2532 PERL_ARGS_ASSERT_GET_AV;
2533
cbfd0a87 2534 if (flags)
6224f72b
GS
2535 return GvAVn(gv);
2536 if (gv)
2537 return GvAV(gv);
7d49f689 2538 return NULL;
6224f72b
GS
2539}
2540
954c1994 2541/*
ccfc67b7
JH
2542=head1 Hash Manipulation Functions
2543
954c1994
GS
2544=for apidoc p||get_hv
2545
6673a63c 2546Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2547C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2548Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2549and the variable does not exist then C<NULL> is returned.
954c1994
GS
2550
2551=cut
2552*/
2553
6224f72b 2554HV*
6673a63c 2555Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2556{
6673a63c 2557 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2558
2559 PERL_ARGS_ASSERT_GET_HV;
2560
6673a63c 2561 if (flags)
a0d0e21e
LW
2562 return GvHVn(gv);
2563 if (gv)
2564 return GvHV(gv);
5c284bb0 2565 return NULL;
a0d0e21e
LW
2566}
2567
954c1994 2568/*
ccfc67b7
JH
2569=head1 CV Manipulation Functions
2570
780a5241
NC
2571=for apidoc p||get_cvn_flags
2572
2573Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2574C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2575exist then it will be declared (which has the same effect as saying
2576C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2577then NULL is returned.
2578
954c1994
GS
2579=for apidoc p||get_cv
2580
780a5241 2581Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2582
2583=cut
2584*/
2585
a0d0e21e 2586CV*
780a5241 2587Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2588{
780a5241 2589 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2590
2591 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2592
334dda80
FC
2593 /* XXX this is probably not what they think they're getting.
2594 * It has the same effect as "sub name;", i.e. just a forward
2595 * declaration! */
780a5241 2596 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2597 return newSTUB(gv,0);
780a5241 2598 }
a0d0e21e 2599 if (gv)
8ebc5c01 2600 return GvCVu(gv);
601f1833 2601 return NULL;
a0d0e21e
LW
2602}
2603
2c67934f
NC
2604/* Nothing in core calls this now, but we can't replace it with a macro and
2605 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2606CV*
2607Perl_get_cv(pTHX_ const char *name, I32 flags)
2608{
7918f24d
NC
2609 PERL_ARGS_ASSERT_GET_CV;
2610
780a5241
NC
2611 return get_cvn_flags(name, strlen(name), flags);
2612}
2613
79072805
LW
2614/* Be sure to refetch the stack pointer after calling these routines. */
2615
954c1994 2616/*
ccfc67b7
JH
2617
2618=head1 Callback Functions
2619
954c1994
GS
2620=for apidoc p||call_argv
2621
f0b90de1 2622Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2623with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2624L<perlcall>.
f0b90de1
SF
2625
2626Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2627
2628=cut
2629*/
2630
a0d0e21e 2631I32
5aaab254 2632Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2633
8ac85365
NIS
2634 /* See G_* flags in cop.h */
2635 /* null terminated arg list */
8990e307 2636{
a0d0e21e 2637 dSP;
8990e307 2638
7918f24d
NC
2639 PERL_ARGS_ASSERT_CALL_ARGV;
2640
924508f0 2641 PUSHMARK(SP);
3dc78631
DM
2642 while (*argv) {
2643 mXPUSHs(newSVpv(*argv,0));
2644 argv++;
8990e307 2645 }
3dc78631 2646 PUTBACK;
864dbfa3 2647 return call_pv(sub_name, flags);
8990e307
LW
2648}
2649
954c1994
GS
2650/*
2651=for apidoc p||call_pv
2652
2653Performs a callback to the specified Perl sub. See L<perlcall>.
2654
2655=cut
2656*/
2657
a0d0e21e 2658I32
864dbfa3 2659Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2660 /* name of the subroutine */
2661 /* See G_* flags in cop.h */
a0d0e21e 2662{
7918f24d
NC
2663 PERL_ARGS_ASSERT_CALL_PV;
2664
0da0e728 2665 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2666}
2667
954c1994
GS
2668/*
2669=for apidoc p||call_method
2670
2671Performs a callback to the specified Perl method. The blessed object must
2672be on the stack. See L<perlcall>.
2673
2674=cut
2675*/
2676
a0d0e21e 2677I32
864dbfa3 2678Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2679 /* name of the subroutine */
2680 /* See G_* flags in cop.h */
a0d0e21e 2681{
46ca9bac 2682 STRLEN len;
c106c2be 2683 SV* sv;
7918f24d
NC
2684 PERL_ARGS_ASSERT_CALL_METHOD;
2685
46ca9bac 2686 len = strlen(methname);
c106c2be
RZ
2687 sv = flags & G_METHOD_NAMED
2688 ? sv_2mortal(newSVpvn_share(methname, len,0))
2689 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2690
c106c2be 2691 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2692}
2693
2694/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2695/*
2696=for apidoc p||call_sv
2697
078e2213
TC
2698Performs a callback to the Perl sub specified by the SV.
2699
7c0c544c 2700If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2701SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2702or C<SvPV(sv)> will be used as the name of the sub to call.
2703
2704If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2705C<SvPV(sv)> will be used as the name of the method to call.
2706
2707If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2708the name of the method to call.
2709
2710Some other values are treated specially for internal use and should
2711not be depended on.
2712
2713See L<perlcall>.
954c1994
GS
2714
2715=cut
2716*/
2717
a0d0e21e 2718I32
001d637e 2719Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2720 /* See G_* flags in cop.h */
a0d0e21e 2721{
5b434c73 2722 dVAR;
a0d0e21e 2723 LOGOP myop; /* fake syntax tree node */
b46e009d 2724 METHOP method_op;
aa689395 2725 I32 oldmark;
8ea43dc8 2726 VOL I32 retval = 0;
54310121 2727 bool oldcatch = CATCH_GET;
6224f72b 2728 int ret;
c4420975 2729 OP* const oldop = PL_op;
db36c5a1 2730 dJMPENV;
1e422769 2731
7918f24d
NC
2732 PERL_ARGS_ASSERT_CALL_SV;
2733
a0d0e21e
LW
2734 if (flags & G_DISCARD) {
2735 ENTER;
2736 SAVETMPS;
2737 }
2f8edad0
NC
2738 if (!(flags & G_WANT)) {
2739 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2740 */
2741 flags |= G_SCALAR;
2742 }
a0d0e21e 2743
aa689395 2744 Zero(&myop, 1, LOGOP);
f51d4af5 2745 if (!(flags & G_NOARGS))
aa689395 2746 myop.op_flags |= OPf_STACKED;
4f911530 2747 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2748 SAVEOP();
533c011a 2749 PL_op = (OP*)&myop;
aa689395 2750
8c9009ad 2751 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2752 dSP;
2753 EXTEND(SP, 1);
8c9009ad
DD
2754 PUSHs(sv);
2755 PUTBACK;
5b434c73 2756 }
aa689395 2757 oldmark = TOPMARK;
a0d0e21e 2758
3280af22 2759 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2760 /* Handle first BEGIN of -d. */
3280af22 2761 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2762 /* Try harder, since this may have been a sighandler, thus
2763 * curstash may be meaningless. */
ea726b52 2764 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2765 && !(flags & G_NODEBUG))
5ff48db8 2766 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2767
c106c2be 2768 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2769 Zero(&method_op, 1, METHOP);
2770 method_op.op_next = (OP*)&myop;
2771 PL_op = (OP*)&method_op;
c106c2be 2772 if ( flags & G_METHOD_NAMED ) {
b46e009d 2773 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2774 method_op.op_type = OP_METHOD_NAMED;
2775 method_op.op_u.op_meth_sv = sv;
c106c2be 2776 } else {
b46e009d 2777 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2778 method_op.op_type = OP_METHOD;
c106c2be
RZ
2779 }
2780 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2781 myop.op_type = OP_ENTERSUB;
968b3946
GS
2782 }
2783
312caa8e 2784 if (!(flags & G_EVAL)) {
0cdb2077 2785 CATCH_SET(TRUE);
d6f07c05 2786 CALL_BODY_SUB((OP*)&myop);
312caa8e 2787 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2788 CATCH_SET(oldcatch);
312caa8e
CS
2789 }
2790 else {
8e90e786 2791 I32 old_cxix;
d78bda3d 2792 myop.op_other = (OP*)&myop;
101d6365 2793 (void)POPMARK;
8e90e786 2794 old_cxix = cxstack_ix;
274ed8ae 2795 create_eval_scope(NULL, flags|G_FAKINGEVAL);
101d6365 2796 (void)INCMARK;
a0d0e21e 2797
14dd3ad8 2798 JMPENV_PUSH(ret);
edb2152a 2799
6224f72b
GS
2800 switch (ret) {
2801 case 0:
14dd3ad8 2802 redo_body:
d6f07c05 2803 CALL_BODY_SUB((OP*)&myop);
312caa8e 2804 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2805 if (!(flags & G_KEEPERR)) {
ab69dbc2 2806 CLEAR_ERRSV();
8433848b 2807 }
a0d0e21e 2808 break;
6224f72b 2809 case 1:
f86702cc 2810 STATUS_ALL_FAILURE;
924ba076 2811 /* FALLTHROUGH */
6224f72b 2812 case 2:
a0d0e21e 2813 /* my_exit() was called */
03d9f026 2814 SET_CURSTASH(PL_defstash);
a0d0e21e 2815 FREETMPS;
14dd3ad8 2816 JMPENV_POP;
f86702cc 2817 my_exit_jump();
e5964223 2818 NOT_REACHED; /* NOTREACHED */
6224f72b 2819 case 3:
3280af22 2820 if (PL_restartop) {
febb3a6d 2821 PL_restartjmpenv = NULL;
533c011a 2822 PL_op = PL_restartop;
3280af22 2823 PL_restartop = 0;
312caa8e 2824 goto redo_body;
a0d0e21e 2825 }
3280af22 2826 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2827 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2828 retval = 0;
2829 else {
2830 retval = 1;
3280af22 2831 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2832 }
312caa8e 2833 break;
a0d0e21e 2834 }
a0d0e21e 2835
8e90e786
DM
2836 /* if we croaked, depending on how we croaked the eval scope
2837 * may or may not have already been popped */
2838 if (cxstack_ix > old_cxix) {
2839 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2840 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2841 delete_eval_scope();
8e90e786 2842 }
14dd3ad8 2843 JMPENV_POP;
a0d0e21e 2844 }
1e422769 2845
a0d0e21e 2846 if (flags & G_DISCARD) {
3280af22 2847 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2848 retval = 0;
2849 FREETMPS;
2850 LEAVE;
2851 }
533c011a 2852 PL_op = oldop;
a0d0e21e
LW
2853 return retval;
2854}
2855
6e72f9df 2856/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2857
954c1994
GS
2858/*
2859=for apidoc p||eval_sv
2860
72d33970 2861Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2862as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2863
2864=cut
2865*/
2866
a0d0e21e 2867I32
864dbfa3 2868Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2869
8ac85365 2870 /* See G_* flags in cop.h */
a0d0e21e 2871{
97aff369 2872 dVAR;
a0d0e21e 2873 UNOP myop; /* fake syntax tree node */
5b434c73 2874 VOL I32 oldmark;
8ea43dc8 2875 VOL I32 retval = 0;
6224f72b 2876 int ret;
c4420975 2877 OP* const oldop = PL_op;
db36c5a1 2878 dJMPENV;
84902520 2879
7918f24d
NC
2880 PERL_ARGS_ASSERT_EVAL_SV;
2881
4633a7c4
LW
2882 if (flags & G_DISCARD) {
2883 ENTER;
2884 SAVETMPS;
2885 }
2886
462e5cf6 2887 SAVEOP();
533c011a 2888 PL_op = (OP*)&myop;
5ff48db8 2889 Zero(&myop, 1, UNOP);
5b434c73
DD
2890 {
2891 dSP;
2892 oldmark = SP - PL_stack_base;
2893 EXTEND(SP, 1);
2894 PUSHs(sv);
2895 PUTBACK;
2896 }
79072805 2897
4633a7c4
LW
2898 if (!(flags & G_NOARGS))
2899 myop.op_flags = OPf_STACKED;
6e72f9df 2900 myop.op_type = OP_ENTEREVAL;
4f911530 2901 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2902 if (flags & G_KEEPERR)
2903 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2904
2905 if (flags & G_RE_REPARSING)
2906 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2907
dedbcade 2908 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 2909 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
2910 TAINT_PROPER("eval_sv()");
2911
14dd3ad8 2912 JMPENV_PUSH(ret);
6224f72b
GS
2913 switch (ret) {
2914 case 0:
14dd3ad8 2915 redo_body:
2ba65d5f
DM
2916 if (PL_op == (OP*)(&myop)) {
2917 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2918 if (!PL_op)
2919 goto fail; /* failed in compilation */
2920 }
4aca2f62 2921 CALLRUNOPS(aTHX);
312caa8e 2922 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2923 if (!(flags & G_KEEPERR)) {
ab69dbc2 2924 CLEAR_ERRSV();
8433848b 2925 }
4633a7c4 2926 break;
6224f72b 2927 case 1:
f86702cc 2928 STATUS_ALL_FAILURE;
924ba076 2929 /* FALLTHROUGH */
6224f72b 2930 case 2:
4633a7c4 2931 /* my_exit() was called */
03d9f026 2932 SET_CURSTASH(PL_defstash);
4633a7c4 2933 FREETMPS;
14dd3ad8 2934 JMPENV_POP;
f86702cc 2935 my_exit_jump();
e5964223 2936 NOT_REACHED; /* NOTREACHED */
6224f72b 2937 case 3:
3280af22 2938 if (PL_restartop) {
febb3a6d 2939 PL_restartjmpenv = NULL;
533c011a 2940 PL_op = PL_restartop;
3280af22 2941 PL_restartop = 0;
312caa8e 2942 goto redo_body;
4633a7c4 2943 }
4aca2f62 2944 fail:
3280af22 2945 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2946 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2947 retval = 0;
2948 else {
2949 retval = 1;
3280af22 2950 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2951 }
312caa8e 2952 break;
4633a7c4
LW
2953 }
2954
14dd3ad8 2955 JMPENV_POP;
4633a7c4 2956 if (flags & G_DISCARD) {
3280af22 2957 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2958 retval = 0;
2959 FREETMPS;
2960 LEAVE;
2961 }
533c011a 2962 PL_op = oldop;
4633a7c4
LW
2963 return retval;
2964}
2965
954c1994
GS
2966/*
2967=for apidoc p||eval_pv
2968
422791e4 2969Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2970
2971=cut
2972*/
2973
137443ea 2974SV*
864dbfa3 2975Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2976{
137443ea
PP
2977 SV* sv = newSVpv(p, 0);
2978
7918f24d
NC
2979 PERL_ARGS_ASSERT_EVAL_PV;
2980
864dbfa3 2981 eval_sv(sv, G_SCALAR);
137443ea
PP
2982 SvREFCNT_dec(sv);
2983
ed1786ad
DD
2984 {
2985 dSP;
2986 sv = POPs;
2987 PUTBACK;
2988 }
137443ea 2989
eed484f9
DD
2990 /* just check empty string or undef? */
2991 if (croak_on_error) {
2992 SV * const errsv = ERRSV;
2993 if(SvTRUE_NN(errsv))
2994 /* replace with croak_sv? */
2995 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2996 }
137443ea
PP
2997
2998 return sv;
2999}
3000
4633a7c4
LW
3001/* Require a module. */
3002
954c1994 3003/*
ccfc67b7
JH
3004=head1 Embedding Functions
3005
954c1994
GS
3006=for apidoc p||require_pv
3007
7d3fb230
BS
3008Tells Perl to C<require> the file named by the string argument. It is
3009analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3010implemented that way; consider using load_module instead.
954c1994 3011
7d3fb230 3012=cut */
954c1994 3013
4633a7c4 3014void
864dbfa3 3015Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3016{
d3acc0f7 3017 dSP;
97aff369 3018 SV* sv;
7918f24d
NC
3019
3020 PERL_ARGS_ASSERT_REQUIRE_PV;
3021
e788e7d3 3022 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3023 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3024 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3025 POPSTACK;
79072805
LW
3026}
3027
76e3520e 3028STATIC void
b6f82619 3029S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3030{
ab821d7f 3031 /* This message really ought to be max 23 lines.
75c72d73 3032 * Removed -h because the user already knows that option. Others? */
fb73857a 3033
1566c39d
NC
3034 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3035 minimum of 509 character string literals. */
27da23d5 3036 static const char * const usage_msg[] = {
1566c39d
NC
3037" -0[octal] specify record separator (\\0, if no argument)\n"
3038" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3039" -C[number/list] enables the listed Unicode features\n"
3040" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3041" -d[:debugger] run program under debugger\n"
3042" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3043" -e program one line of program (several -e's allowed, omit programfile)\n"
3044" -E program like -e, but enables all optional features\n"
3045" -f don't do $sitelib/sitecustomize.pl at startup\n"
3046" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3047" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3048" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3049" -l[octal] enable line ending processing, specifies line terminator\n"
3050" -[mM][-]module execute \"use/no module...\" before executing program\n"
3051" -n assume \"while (<>) { ... }\" loop around program\n"
3052" -p assume loop like -n but print line also, like sed\n"
3053" -s enable rudimentary parsing for switches after programfile\n"
3054" -S look for programfile using PATH environment variable\n",
3055" -t enable tainting warnings\n"
3056" -T enable tainting checks\n"
3057" -u dump core after parsing program\n"
3058" -U allow unsafe operations\n"
3059" -v print version, patchlevel and license\n"
3060" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3061" -w enable many useful warnings\n"
1566c39d
NC
3062" -W enable all warnings\n"
3063" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3064" -X disable all warnings\n"
3065" \n"
3066"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3067NULL
3068};
27da23d5 3069 const char * const *p = usage_msg;
1566c39d 3070 PerlIO *out = PerlIO_stdout();
fb73857a 3071
1566c39d
NC
3072 PerlIO_printf(out,
3073 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3074 PL_origargv[0]);
fb73857a 3075 while (*p)
1566c39d 3076 PerlIO_puts(out, *p++);
b6f82619 3077 my_exit(0);
4633a7c4
LW
3078}
3079
b4ab917c
DM
3080/* convert a string of -D options (or digits) into an int.
3081 * sets *s to point to the char after the options */
3082
3083#ifdef DEBUGGING
3084int
e1ec3a88 3085Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3086{
27da23d5 3087 static const char * const usage_msgd[] = {
651b8f1a
NC
3088 " Debugging flag values: (see also -d)\n"
3089 " p Tokenizing and parsing (with v, displays parse stack)\n"
3090 " s Stack snapshots (with v, displays all stacks)\n"
3091 " l Context (loop) stack processing\n"
3092 " t Trace execution\n"
3093 " o Method and overloading resolution\n",
3094 " c String/numeric conversions\n"
3095 " P Print profiling info, source file input state\n"
3096 " m Memory and SV allocation\n"
3097 " f Format processing\n"
3098 " r Regular expression parsing and execution\n"
3099 " x Syntax tree dump\n",
3100 " u Tainting checks\n"
3101 " H Hash dump -- usurps values()\n"
3102 " X Scratchpad allocation\n"
3103 " D Cleaning up\n"
56967202 3104 " S Op slab allocation\n"
651b8f1a
NC
3105 " T Tokenising\n"
3106 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3107 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3108 " v Verbose: use in conjunction with other flags\n"
3109 " C Copy On Write\n"
3110 " A Consistency checks on internal structures\n"
3111 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3112 " M trace smart match resolution\n"
3113 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3114 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3115 NULL
3116 };
22ff3130 3117 UV uv = 0;
7918f24d
NC
3118
3119 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3120
b4ab917c
DM
3121 if (isALPHA(**s)) {
3122 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3123 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3124
0eb30aeb 3125 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3126 const char * const d = strchr(debopts,**s);
b4ab917c 3127 if (d)
22ff3130 3128 uv |= 1 << (d - debopts);
b4ab917c 3129 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3130 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3131 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3132 }
3133 }
e6e64d9b 3134 else if (isDIGIT(**s)) {
96e440d2 3135 const char* e;
22ff3130 3136 if (grok_atoUV(*s, &uv, &e))
96e440d2 3137 *s = e;
0eb30aeb 3138 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3139 }
ddcf8bc1 3140 else if (givehelp) {
06e869a4 3141 const char *const *p = usage_msgd;
651b8f1a 3142 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3143 }
22ff3130 3144 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3145}
3146#endif
3147
79072805
LW
3148/* This routine handles any switches that can be given during run */
3149
c7030b81
NC
3150const char *
3151Perl_moreswitches(pTHX_ const char *s)
79072805 3152{
27da23d5 3153 dVAR;
84c133a0 3154 UV rschar;
0544e6df 3155 const char option = *s; /* used to remember option in -m/-M code */
79072805 3156
7918f24d
NC
3157 PERL_ARGS_ASSERT_MORESWITCHES;
3158
79072805
LW
3159 switch (*s) {
3160 case '0':
a863c7d1 3161 {
f2095865 3162 I32 flags = 0;
a3b680e6 3163 STRLEN numlen;
f2095865
JH
3164
3165 SvREFCNT_dec(PL_rs);
3166 if (s[1] == 'x' && s[2]) {
a3b680e6 3167 const char *e = s+=2;
f2095865
JH
3168 U8 *tmps;
3169
a3b680e6
AL
3170 while (*e)
3171 e++;
f2095865
JH
3172 numlen = e - s;
3173 flags = PERL_SCAN_SILENT_ILLDIGIT;
3174 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3175 if (s + numlen < e) {
3176 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3177 numlen = 0;
3178 s--;
3179 }
396482e1 3180 PL_rs = newSVpvs("");
5f560d8a 3181 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865
JH
3182 tmps = (U8*)SvPVX(PL_rs);
3183 uvchr_to_utf8(tmps, rschar);
5f560d8a 3184 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3185 SvUTF8_on(PL_rs);
3186 }
3187 else {
3188 numlen = 4;
3189 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3190 if (rschar & ~((U8)~0))
3191 PL_rs = &PL_sv_undef;
3192 else if (!rschar && numlen >= 2)
396482e1 3193 PL_rs = newSVpvs("");
f2095865
JH
3194 else {
3195 char ch = (char)rschar;
3196 PL_rs = newSVpvn(&ch, 1);
3197 }
3198 }
64ace3f8 3199 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3200 return s + numlen;
a863c7d1 3201 }
46487f74 3202 case 'C':
a05d7ebb 3203 s++;
dd374669 3204 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3205 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3206 PL_utf8cache = -1;
46487f74 3207 return s;
2304df62 3208 case 'F':
5fc691f1 3209 PL_minus_a = TRUE;
3280af22 3210 PL_minus_F = TRUE;
24ffa309 3211 PL_minus_n = TRUE;
ebce5377
RGS
3212 PL_splitstr = ++s;
3213 while (*s && !isSPACE(*s)) ++s;
e49e380e 3214 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3215 return s;
79072805 3216 case 'a':
3280af22 3217 PL_minus_a = TRUE;
24ffa309 3218 PL_minus_n = TRUE;
79072805
LW
3219 s++;
3220 return s;
3221 case 'c':
3280af22 3222 PL_minus_c = TRUE;
79072805
LW
3223 s++;
3224 return s;
3225 case 'd':
f20b2998 3226 forbid_setid('d', FALSE);
4633a7c4 3227 s++;
2cbb2ee1
RGS
3228
3229 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3230 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3231 ++s;
3232 my_setenv("PERL5DB_THREADED", "1");
3233 }
3234
70c94a19
RR
3235 /* The following permits -d:Mod to accepts arguments following an =
3236 in the fashion that -MSome::Mod does. */
3237 if (*s == ':' || *s == '=') {
b19934fb
NC
3238 const char *start;
3239 const char *end;
3240 SV *sv;
3241
3242 if (*++s == '-') {
3243 ++s;
3244 sv = newSVpvs("no Devel::");
3245 } else {
3246 sv = newSVpvs("use Devel::");
3247 }
3248
3249 start = s;
3250 end = s + strlen(s);
f85893a1 3251
b19934fb 3252 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3253 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3254 if (*s != '=')
f85893a1 3255 sv_catpvn(sv, start, end - start);
70c94a19
RR
3256 else {
3257 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3258 /* Don't use NUL as q// delimiter here, this string goes in the
3259 * environment. */
3260 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3261 }
f85893a1 3262 s = end;
184f32ec 3263 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3264 SvREFCNT_dec(sv);
4633a7c4 3265 }
ed094faf 3266 if (!PL_perldb) {
3280af22 3267 PL_perldb = PERLDB_ALL;
a0d0e21e 3268 init_debugger();
ed094faf 3269 }
79072805
LW
3270 return s;
3271 case 'D':
0453d815 3272 {
79072805 3273#ifdef DEBUGGING
f20b2998 3274 forbid_setid('D', FALSE);
b4ab917c 3275 s++;
dd374669 3276 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3277#else /* !DEBUGGING */
0453d815 3278 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3279 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3280 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3281 for (s++; isWORDCHAR(*s); s++) ;
79072805 3282#endif
79072805 3283 return s;
2b5060ae 3284 NOT_REACHED; /* NOTREACHED */
0453d815 3285 }
4633a7c4 3286 case 'h':
b6f82619 3287 usage();
2b5060ae
DM
3288 NOT_REACHED; /* NOTREACHED */
3289
79072805 3290 case 'i':
43c5f42d 3291 Safefree(PL_inplace);
c030f24b
GH
3292#if defined(__CYGWIN__) /* do backup extension automagically */
3293 if (*(s+1) == '\0') {
c86a4f2e 3294 PL_inplace = savepvs(".bak");
c030f24b
GH
3295 return s+1;
3296 }
3297#endif /* __CYGWIN__ */
5ef5d758 3298 {
d4c19fe8 3299 const char * const start = ++s;
5ef5d758
NC
3300 while (*s && !isSPACE(*s))
3301 ++s;
3302
3303 PL_inplace = savepvn(start, s - start);
3304 }
7b8d334a 3305 if (*s) {
5ef5d758 3306 ++s;
7b8d334a 3307 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3308 s++;
7b8d334a 3309 }
fb73857a 3310 return s;
4e49a025 3311 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3312 forbid_setid('I', FALSE);
fb73857a
PP
3313 ++s;
3314 while (*s && isSPACE(*s))
3315 ++s;
3316 if (*s) {
c7030b81 3317 const char *e, *p;
0df16ed7
GS
3318 p = s;
3319 /* ignore trailing spaces (possibly followed by other switches) */
3320 do {
3321 for (e = p; *e && !isSPACE(*e); e++) ;
3322 p = e;
3323 while (isSPACE(*p))
3324 p++;
3325 } while (*p && *p != '-');
55b4bc1c 3326 incpush(s, e-s,
e28f3139 3327 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3328 s = p;
3329 if (*s == '-')
3330 s++;
79072805
LW
3331 }
3332 else
a67e862a 3333 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3334 return s;
79072805 3335 case 'l':
3280af22 3336 PL_minus_l = TRUE;
79072805 3337 s++;
7889fe52
NIS
3338 if (PL_ors_sv) {
3339 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3340 PL_ors_sv = NULL;
7889fe52 3341 }
79072805 3342 if (isDIGIT(*s)) {
53305cf1 3343 I32 flags = 0;
a3b680e6 3344 STRLEN numlen;
396482e1 3345 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3346 numlen = 3 + (*s == '0');
3347 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3348 s += numlen;
3349 }
3350 else {
8bfdd7d9 3351 if (RsPARA(PL_rs)) {
396482e1 3352 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3353 }
3354 else {
8bfdd7d9 3355 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3356 }
79072805
LW
3357 }
3358 return s;
1a30305b 3359 case 'M':
f20b2998 3360 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3361 /* FALLTHROUGH */
1a30305b 3362 case 'm':
f20b2998 3363 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3364 if (*++s) {
c7030b81 3365 const char *start;
b64cb68c 3366 const char *end;
11343788 3367 SV *sv;
e1ec3a88 3368 const char *use = "use ";
0544e6df 3369 bool colon = FALSE;
a5f75d66 3370 /* -M-foo == 'no foo' */
d0043bd1
NC
3371 /* Leading space on " no " is deliberate, to make both
3372 possibilities the same length. */
3373 if (*s == '-') { use = " no "; ++s; }
3374 sv = newSVpvn(use,4);
a5f75d66 3375 start = s;
1a30305b 3376 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3377 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3378 if( *s++ == ':' ) {
3379 if( *s == ':' )
3380 s++;
3381 else
3382 colon = TRUE;
3383 }
3384 }
3385 if (s == start)
3386 Perl_croak(aTHX_ "Module name required with -%c option",
3387 option);
3388 if (colon)
3389 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3390 "contains single ':'",
63da6837 3391 (int)(s - start), start, option);
b64cb68c 3392 end = s + strlen(s);
c07a80fd 3393 if (*s != '=') {
b64cb68c 3394 sv_catpvn(sv, start, end - start);
0544e6df 3395 if (option == 'm') {
c07a80fd 3396 if (*s != '\0')
cea2e8a9 3397 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3398 sv_catpvs( sv, " ()");
c07a80fd
PP
3399 }
3400 } else {
11343788 3401 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3402 /* Use NUL as q''-delimiter. */
3403 sv_catpvs(sv, " split(/,/,q\0");
3404 ++s;
3405 sv_catpvn(sv, s, end - s);
396482e1 3406 sv_catpvs(sv, "\0)");
c07a80fd 3407 }
b64cb68c 3408 s = end;
29a861e7 3409 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3410 }
3411 else
0544e6df 3412 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3413 return s;
79072805 3414 case 'n':
3280af22 3415 PL_minus_n = TRUE;
79072805
LW
3416 s++;
3417 return s;
3418 case 'p':
3280af22 3419 PL_minus_p = TRUE;
79072805
LW
3420 s++;
3421 return s;
3422 case 's':
f20b2998 3423 forbid_setid('s', FALSE);
3280af22 3424 PL_doswitches = TRUE;
79072805
LW
3425 s++;
3426 return s;
6537fe72 3427 case 't':
27a6968b 3428 case 'T':
dc6d7f5c 3429#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3430 /* silently ignore */
dc6d7f5c 3431#elif defined(NO_TAINT_SUPPORT)
3231f579 3432 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3433 "Cowardly refusing to run with -t or -T flags");
3434#else
3435 if (!TAINTING_get)
27a6968b 3436 TOO_LATE_FOR(*s);
284167a5 3437#endif
6537fe72 3438 s++;
463ee0b2 3439 return s;
79072805 3440 case 'u':
3280af22 3441 PL_do_undump = TRUE;
79072805
LW
3442 s++;
3443 return s;
3444 case 'U':
3280af22 3445 PL_unsafe = TRUE;
79072805
LW
3446 s++;
3447 return s;
3448 case 'v':
c4bc78d9
NC
3449 minus_v();
3450 case 'w':
3451 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3452 PL_dowarn |= G_WARN_ON;
3453 }
3454 s++;
3455 return s;
3456 case 'W':
3457 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3458 if (!specialWARN(PL_compiling.cop_warnings))
3459 PerlMemShared_free(PL_compiling.cop_warnings);
3460 PL_compiling.cop_warnings = pWARN_ALL ;
3461 s++;
3462 return s;
3463 case 'X':
3464 PL_dowarn = G_WARN_ALL_OFF;
3465 if (!specialWARN(PL_compiling.cop_warnings))
3466 PerlMemShared_free(PL_compiling.cop_warnings);
3467 PL_compiling.cop_warnings = pWARN_NONE ;
3468 s++;
3469 return s;
3470 case '*':
3471 case ' ':
3472 while( *s == ' ' )
3473 ++s;
3474 if (s[0] == '-') /* Additional switches on #! line. */
3475 return s+1;
3476 break;
3477 case '-':
3478 case 0:
3479#if defined(WIN32) || !defined(PERL_STRICT_CR)
3480 case '\r':
3481#endif
3482