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4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
7b8dd5f4 36#include "charclass_invlists.h"
378cc40b 37
011f1a1a
JH
38#ifdef NETWARE
39#include "nwutil.h"
011f1a1a
JH
40#endif
41
2aa47728 42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
43# ifdef I_SYSUIO
44# include <sys/uio.h>
45# endif
46
47union control_un {
48 struct cmsghdr cm;
49 char control[CMSG_SPACE(sizeof(int))];
50};
51
2aa47728
NC
52#endif
53
5311654c
JH
54#ifndef HZ
55# ifdef CLK_TCK
56# define HZ CLK_TCK
57# else
58# define HZ 60
59# endif
60#endif
61
7114a2d2 62#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 63char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
64#endif
65
acfe0abc 66static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 67
cc69b689 68#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 69# define validate_suid(rsfp) NOOP
cc69b689 70#else
b24bc095 71# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 72#endif
8d063cd8 73
d6f07c05
AL
74#define CALL_BODY_SUB(myop) \
75 if (PL_op == (myop)) \
139d0ce6 76 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
77 if (PL_op) \
78 CALLRUNOPS(aTHX);
79
80#define CALL_LIST_BODY(cv) \
81 PUSHMARK(PL_stack_sp); \
9a8aa25b 82 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 83
e6827a76 84static void
daa7d858 85S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 86{
27da23d5 87 dVAR;
e6827a76
NC
88 if (!PL_curinterp) {
89 PERL_SET_INTERP(my_perl);
3db8f154 90#if defined(USE_ITHREADS)
e6827a76
NC
91 INIT_THREADS;
92 ALLOC_THREAD_KEY;
93 PERL_SET_THX(my_perl);
94 OP_REFCNT_INIT;
e8570548 95 OP_CHECK_MUTEX_INIT;
71ad1b0c 96 HINTS_REFCNT_INIT;
e6827a76 97 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
98 MUTEX_INIT(&PL_my_ctx_mutex);
99# endif
e6827a76 100 }
c0bce9aa
NC
101#if defined(USE_ITHREADS)
102 else
103#else
104 /* This always happens for non-ithreads */
105#endif
106 {
e6827a76
NC
107 PERL_SET_THX(my_perl);
108 }
109}
06d86050 110
cbec8ebe
DM
111
112/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
113
114void
115Perl_sys_init(int* argc, char*** argv)
116{
4fc0badb 117 dVAR;
7918f24d
NC
118
119 PERL_ARGS_ASSERT_SYS_INIT;
120
cbec8ebe
DM
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
124}
125
126void
127Perl_sys_init3(int* argc, char*** argv, char*** env)
128{
4fc0badb 129 dVAR;
7918f24d
NC
130
131 PERL_ARGS_ASSERT_SYS_INIT3;
132
cbec8ebe
DM
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
137}
138
139void
88772978 140Perl_sys_term(void)
cbec8ebe 141{
4fc0badb 142 dVAR;
bf81751b
DM
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
145 }
cbec8ebe
DM
146}
147
148
32e30700
GS
149#ifdef PERL_IMPLICIT_SYS
150PerlInterpreter *
7766f137
GS
151perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
156{
157 PerlInterpreter *my_perl;
7918f24d
NC
158
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160
9f653bb5 161 /* Newx() needs interpreter, so call malloc() instead */
32e30700 162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 163 S_init_tls_and_interp(my_perl);
32e30700
GS
164 Zero(my_perl, 1, PerlInterpreter);
165 PL_Mem = ipM;
7766f137
GS
166 PL_MemShared = ipMS;
167 PL_MemParse = ipMP;
32e30700
GS
168 PL_Env = ipE;
169 PL_StdIO = ipStd;
170 PL_LIO = ipLIO;
171 PL_Dir = ipD;
172 PL_Sock = ipS;
173 PL_Proc = ipP;
7cb608b5 174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 175
32e30700
GS
176 return my_perl;
177}
178#else
954c1994
GS
179
180/*
ccfc67b7
JH
181=head1 Embedding Functions
182
954c1994
GS
183=for apidoc perl_alloc
184
185Allocates a new Perl interpreter. See L<perlembed>.
186
187=cut
188*/
189
93a17b20 190PerlInterpreter *
cea2e8a9 191perl_alloc(void)
79072805 192{
cea2e8a9 193 PerlInterpreter *my_perl;
79072805 194
9f653bb5 195 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 197
e6827a76 198 S_init_tls_and_interp(my_perl);
7cb608b5 199#ifndef PERL_TRACK_MEMPOOL
07409e01 200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
201#else
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
204 return my_perl;
205#endif
79072805 206}
32e30700 207#endif /* PERL_IMPLICIT_SYS */
79072805 208
954c1994
GS
209/*
210=for apidoc perl_construct
211
212Initializes a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
79072805 217void
0cb96387 218perl_construct(pTHXx)
79072805 219{
27da23d5 220 dVAR;
7918f24d
NC
221
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
223
8990e307 224#ifdef MULTIPLICITY
54aff467 225 init_interp();
ac27b0f5 226 PL_perl_destruct_level = 1;
54aff467 227#else
7918f24d 228 PERL_UNUSED_ARG(my_perl);
54aff467
GS
229 if (PL_perl_destruct_level > 0)
230 init_interp();
231#endif
34caed6d
DM
232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233
75d476e2
SM
234#ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
236#endif
237
0d96b528 238 init_constants();
34caed6d
DM
239
240 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
242
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 244#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 245 PL_pidstatus = newHV();
ca0c25f6 246#endif
79072805 247
396482e1 248 PL_rs = newSVpvs("\n");
dc92893f 249
cea2e8a9 250 init_stacks();
79072805 251
748a9306 252 init_ids();
a5f75d66 253
312caa8e 254 JMPENV_BOOTSTRAP;
f86702cc
PP
255 STATUS_ALL_SUCCESS;
256
0672f40e 257 init_i18nl10n(1);
0b5b802d 258
ab821d7f 259#if defined(LOCAL_PATCH_COUNT)
3280af22 260 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
261#endif
262
52853b95
GS
263#ifdef HAVE_INTERP_INTERN
264 sys_intern_init();
265#endif
266
3a1ee7e8 267 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 268
3280af22
NIS
269 PL_fdpid = newAV(); /* for remembering popen pids by fd */
270 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 271 PL_errors = newSVpvs("");
76f68e9b
MHM
272 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
273 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
274 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 275#ifdef USE_ITHREADS
402d2eb1
NC
276 /* First entry is a list of empty elements. It needs to be initialised
277 else all hell breaks loose in S_find_uninit_var(). */
278 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 279 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 280 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 281#endif
e5dd39fc 282#ifdef USE_REENTRANT_API
59bd0823 283 Perl_reentrant_init(aTHX);
e5dd39fc 284#endif
7dc86639
YO
285#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
286 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
287 * This MUST be done before any hash stores or fetches take place.
288 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
289 * yourself, it is your responsibility to provide a good random seed!
290 * You can also define PERL_HASH_SEED in compile time, see hv.h.
291 *
292 * XXX: fix this comment */
293 if (PL_hash_seed_set == FALSE) {
294 Perl_get_hash_seed(aTHX_ PL_hash_seed);
295 PL_hash_seed_set= TRUE;
296 }
297#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
298
299 /* Note that strtab is a rather special HV. Assumptions are made
300 about not iterating on it, and not adding tie magic to it.
301 It is properly deallocated in perl_destruct() */
302 PL_strtab = newHV();
303
3d47000e
AB
304 HvSHAREKEYS_off(PL_strtab); /* mandatory */
305 hv_ksplit(PL_strtab, 512);
306
a38ab475
RZ
307 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
308
2f42fcb0
JH
309#ifndef PERL_MICRO
310# ifdef USE_ENVIRON_ARRAY
0631ea03 311 PL_origenviron = environ;
2f42fcb0 312# endif
0631ea03
AB
313#endif
314
5311654c 315 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 316 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
317 * The HZ if not originally defined has been by now
318 * been defined as CLK_TCK, if available. */
b6c36746 319#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
320 PL_clocktick = sysconf(_SC_CLK_TCK);
321 if (PL_clocktick <= 0)
322#endif
323 PL_clocktick = HZ;
324
081fc587
AB
325 PL_stashcache = newHV();
326
e8e3635e 327 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 328 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 329
27da23d5
JH
330#ifdef HAS_MMAP
331 if (!PL_mmap_page_size) {
332#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
333 {
334 SETERRNO(0, SS_NORMAL);
335# ifdef _SC_PAGESIZE
336 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
337# else
338 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
339# endif
340 if ((long) PL_mmap_page_size < 0) {
341 if (errno) {
44f8325f 342 SV * const error = ERRSV;
d4c19fe8 343 SvUPGRADE(error, SVt_PV);
0510663f 344 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
345 }
346 else
347 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
348 }
349 }
350#else
351# ifdef HAS_GETPAGESIZE
352 PL_mmap_page_size = getpagesize();
353# else
354# if defined(I_SYS_PARAM) && defined(PAGESIZE)
355 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
356# endif
357# endif
358#endif
359 if (PL_mmap_page_size <= 0)
360 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
361 (IV) PL_mmap_page_size);
362 }
363#endif /* HAS_MMAP */
364
365#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
366 PL_timesbase.tms_utime = 0;
367 PL_timesbase.tms_stime = 0;
368 PL_timesbase.tms_cutime = 0;
369 PL_timesbase.tms_cstime = 0;
370#endif
371
7d113631
NC
372 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
373
a3e6e81e 374 PL_registered_mros = newHV();
9e169432
NC
375 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
376 HvMAX(PL_registered_mros) = 0;
a3e6e81e 377
7b8dd5f4
KW
378 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
379 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
380 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
381 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
382 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
383 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
384 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
385 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
386 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
387 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
388 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
389 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
390 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
391 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
392 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
393 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
394 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC
441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC
449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
462 abort();
463 }
bf357333
NC
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
466 abort();
467 }
468
808ad2d0
NC
469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC
480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
491
808ad2d0
NC
492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC
511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS
516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG
539 assert(PL_scopestack_ix == 1);
540
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH
549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
553 i = grok_atou(s, NULL);
554 }
36e77d41
DD
555#ifdef DEBUGGING
556 if (destruct_level < i) destruct_level = i;
557#endif
558#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
36e77d41 561#endif
5f05dabc 562 }
4633a7c4
LW
563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
9ebf26ad 572 if (PL_endav && !PL_minus_c) {
ca7b837b 573 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 574 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 575 }
f3faeb53 576 JMPENV_POP;
26f423df 577 }
f3faeb53 578 LEAVE;
a0d0e21e 579 FREETMPS;
3d22c4f0 580 assert(PL_scopestack_ix == 0);
a0d0e21e 581
e00b64d4 582 /* Need to flush since END blocks can produce output */
f13a2bc0 583 my_fflush_all();
e00b64d4 584
75d476e2
SM
585#ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
591 }
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
596#endif
597
598
16c91539 599 if (PL_threadhook(aTHX)) {
62375a60 600 /* Threads hook has vetoed further cleanup */
c301d606 601 PL_veto_cleanup = TRUE;
37038d91 602 return STATUS_EXIT;
62375a60
NIS
603 }
604
2aa47728
NC
605#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
611 fail gracefully */
612 int fd[2];
613
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
616 abort();
617 }
618
619 child = fork();
620 if(child == -1) {
621 perror("Debug leaking scalars fork failed");
622 abort();
623 }
624 if (!child) {
625 /* We are the child */
3125a5a4
NC
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
628 int f;
808ad2d0
NC
629 const char *where;
630 /* Our success message is an integer 0, and a char 0 */
b61433a9 631 static const char success[sizeof(int) + 1] = {0};
3125a5a4 632
2aa47728 633 close(fd[0]);
2aa47728 634
3125a5a4
NC
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
bf357333
NC
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
646
647 f = sysconf(_SC_OPEN_MAX);
648 if(f < 0) {
808ad2d0
NC
649 where = "sysconf failed";
650 goto abort;
3125a5a4
NC
651 }
652 while (f--) {
653 if (f == sock)
654 continue;
3125a5a4
NC
655 close(f);
656 }
657
2aa47728
NC
658 while (1) {
659 SV *target;
bf357333
NC
660 union control_un control;
661 struct msghdr msg;
662 struct iovec vec[1];
663 struct cmsghdr *cmptr;
664 ssize_t got;
665 int got_fd;
666
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
670 msg.msg_name = NULL;
671 msg.msg_namelen = 0;
672 msg.msg_iov = vec;
c3caa5c3 673 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
674
675 vec[0].iov_base = (void*)&target;
676 vec[0].iov_len = sizeof(target);
677
678 got = recvmsg(sock, &msg, 0);
2aa47728
NC
679
680 if(got == 0)
681 break;
682 if(got < 0) {
808ad2d0
NC
683 where = "recv failed";
684 goto abort;
2aa47728
NC
685 }
686 if(got < sizeof(target)) {
808ad2d0
NC
687 where = "short recv";
688 goto abort;
2aa47728 689 }
bf357333 690
808ad2d0
NC
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
692 where = "no cmsg";
693 goto abort;
694 }
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
697 goto abort;
698 }
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
701 goto abort;
702 }
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
705 goto abort;
706 }
bf357333
NC
707
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
711 */
808ad2d0
NC
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
714 where = "dup2";
715 goto abort;
716 }
717 }
2aa47728 718 sv_dump(target);
bf357333 719
2aa47728
NC
720 PerlIO_flush(Perl_debug_log);
721
808ad2d0 722 got = write(sock, &success, sizeof(success));
2aa47728
NC
723
724 if(got < 0) {
808ad2d0
NC
725 where = "write failed";
726 goto abort;
2aa47728 727 }
808ad2d0
NC
728 if(got < sizeof(success)) {
729 where = "short write";
730 goto abort;
2aa47728
NC
731 }
732 }
733 _exit(0);
808ad2d0
NC
734 abort:
735 {
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
740 {&length, 1},
741 {(void*)where, length}
742 };
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
748 reading the data. */
749 sleep(2);
750 _exit((got == -1) ? errno : 0);
751 }
bf357333 752 /* End of child. */
2aa47728 753 }
41e4abd8 754 PL_dumper_fd = fd[0];
2aa47728
NC
755 close(fd[1]);
756 }
757#endif
758
ff0cee69
PP
759 /* We must account for everything. */
760
761 /* Destroy the main CV and syntax tree */
37e77c23
FC
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
17fbfdf6 766 PL_curcop = &PL_compiling;
3280af22 767 if (PL_main_root) {
4e380990
DM
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 772 }
3280af22 773 op_free(PL_main_root);
5f66b61c 774 PL_main_root = NULL;
a0d0e21e 775 }
5f66b61c 776 PL_main_start = NULL;
aac9d523
DM
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
3280af22 781 SvREFCNT_dec(PL_main_cv);
601f1833 782 PL_main_cv = NULL;
ca7b837b 783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 784
13621cfb
NIS
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
787 be cleaned up now.
788 */
789
790 PerlIO_destruct(aTHX);
791
ddf23d4a
SM
792 /*
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
796 */
797 sv_clean_objs();
8990e307 798
5cd24f17 799 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 800 SvREFCNT_dec(PL_warnhook);
a0714e2c 801 PL_warnhook = NULL;
3280af22 802 SvREFCNT_dec(PL_diehook);
a0714e2c 803 PL_diehook = NULL;
5cd24f17 804
4b556e6c 805 /* call exit list functions */
3280af22 806 while (PL_exitlistlen-- > 0)
acfe0abc 807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 808
3280af22 809 Safefree(PL_exitlist);
4b556e6c 810
1c4916e5
CB
811 PL_exitlist = NULL;
812 PL_exitlistlen = 0;
813
a3e6e81e
NC
814 SvREFCNT_dec(PL_registered_mros);
815
551a8b83 816 /* jettison our possibly duplicated environment */
4b647fb0
DM
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
819 */
2f42fcb0 820#ifndef PERL_MICRO
4b647fb0 821#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 822 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
823#ifdef USE_ITHREADS
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
826#endif
827 )
828 {
551a8b83
JH
829 I32 i;
830
831 for (i = 0; environ[i]; i++)
4b420006 832 safesysfree(environ[i]);
0631ea03 833
4b420006
JH
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
551a8b83
JH
836
837 environ = PL_origenviron;
838 }
839#endif
2f42fcb0 840#endif /* !PERL_MICRO */
551a8b83 841
30985c42
JH
842 if (destruct_level == 0) {
843
844 DEBUG_P(debprofdump());
845
846#if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
849#endif
850
851 CopFILE_free(&PL_compiling);
30985c42
JH
852
853 /* The exit() function will do everything that needs doing. */
854 return STATUS_EXIT;
855 }
856
9fa9f06b
KW
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
858
5f8cb046
DM
859#ifdef USE_ITHREADS
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
864 */
0547a729
DM
865 {
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
868
869 for (; i; i--) {
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
872 }
873 }
5f8cb046
DM
874#endif
875
0547a729 876
ad64d0ec 877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
878 PL_stashcache = NULL;
879
5f05dabc
PP
880 /* loosen bonds of global variables */
881
2f9285f8
DM
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
8ebc5c01
PP
886 }
887
84386e14
RGS
888 if (PL_minus_F) {
889 Safefree(PL_splitstr);
890 PL_splitstr = NULL;
891 }
892
8ebc5c01 893 /* switches */
3280af22
NIS
894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
1a904fc8 901#ifdef PERL_SAWAMPERSAND
d3b97530 902 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 903#endif
3280af22
NIS
904 PL_unsafe = FALSE;
905
906 Safefree(PL_inplace);
bd61b366 907 PL_inplace = NULL;
a7cb1f99 908 SvREFCNT_dec(PL_patchlevel);
1e8125c6 909 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
910
911 if (PL_e_script) {
912 SvREFCNT_dec(PL_e_script);
a0714e2c 913 PL_e_script = NULL;
8ebc5c01
PP
914 }
915
bf9cdc68
RG
916 PL_perldb = 0;
917
8ebc5c01
PP
918 /* magical thingies */
919
e23d9e2f
CS
920 SvREFCNT_dec(PL_ofsgv); /* *, */
921 PL_ofsgv = NULL;
5f05dabc 922
7889fe52 923 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 924 PL_ors_sv = NULL;
8ebc5c01 925
3280af22 926 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 927 PL_rs = NULL;
dc92893f 928
d33b2eba 929 Safefree(PL_osname); /* $^O */
bd61b366 930 PL_osname = NULL;
5f05dabc 931
3280af22 932 SvREFCNT_dec(PL_statname);
a0714e2c
SS
933 PL_statname = NULL;
934 PL_statgv = NULL;
5f05dabc 935
8ebc5c01
PP
936 /* defgv, aka *_ should be taken care of elsewhere */
937
7d5ea4e7
GS
938 /* float buffer */
939 Safefree(PL_efloatbuf);
bd61b366 940 PL_efloatbuf = NULL;
7d5ea4e7
GS
941 PL_efloatsize = 0;
942
8ebc5c01 943 /* startup and shutdown function lists */
3280af22 944 SvREFCNT_dec(PL_beginav);
5a837c8f 945 SvREFCNT_dec(PL_beginav_save);
3280af22 946 SvREFCNT_dec(PL_endav);
7d30b5c4 947 SvREFCNT_dec(PL_checkav);
ece599bd 948 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
949 SvREFCNT_dec(PL_unitcheckav);
950 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 951 SvREFCNT_dec(PL_initav);
7d49f689
NC
952 PL_beginav = NULL;
953 PL_beginav_save = NULL;
954 PL_endav = NULL;
955 PL_checkav = NULL;
956 PL_checkav_save = NULL;
3c10abe3
AG
957 PL_unitcheckav = NULL;
958 PL_unitcheckav_save = NULL;
7d49f689 959 PL_initav = NULL;
5618dfe8 960
8ebc5c01 961 /* shortcuts just get cleared */
a0714e2c
SS
962 PL_hintgv = NULL;
963 PL_errgv = NULL;
a0714e2c
SS
964 PL_argvoutgv = NULL;
965 PL_stdingv = NULL;
966 PL_stderrgv = NULL;
967 PL_last_in_gv = NULL;
a0714e2c
SS
968 PL_DBsingle = NULL;
969 PL_DBtrace = NULL;
970 PL_DBsignal = NULL;
601f1833 971 PL_DBcv = NULL;
7d49f689 972 PL_dbargs = NULL;
5c284bb0 973 PL_debstash = NULL;
8ebc5c01 974
cf93a474 975 SvREFCNT_dec(PL_envgv);
f03015cd 976 SvREFCNT_dec(PL_incgv);
722fa0e9 977 SvREFCNT_dec(PL_argvgv);
475b1e90 978 SvREFCNT_dec(PL_replgv);
8cece913
FC
979 SvREFCNT_dec(PL_DBgv);
980 SvREFCNT_dec(PL_DBline);
981 SvREFCNT_dec(PL_DBsub);
cf93a474 982 PL_envgv = NULL;
f03015cd 983 PL_incgv = NULL;
722fa0e9 984 PL_argvgv = NULL;
475b1e90 985 PL_replgv = NULL;
8cece913
FC
986 PL_DBgv = NULL;
987 PL_DBline = NULL;
988 PL_DBsub = NULL;
989
7a1c5554 990 SvREFCNT_dec(PL_argvout_stack);
7d49f689 991 PL_argvout_stack = NULL;
8ebc5c01 992
5c831c24 993 SvREFCNT_dec(PL_modglobal);
5c284bb0 994 PL_modglobal = NULL;
5c831c24 995 SvREFCNT_dec(PL_preambleav);
7d49f689 996 PL_preambleav = NULL;
5c831c24 997 SvREFCNT_dec(PL_subname);
a0714e2c 998 PL_subname = NULL;
ca0c25f6 999#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1000 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1001 PL_pidstatus = NULL;
ca0c25f6 1002#endif
5c831c24 1003 SvREFCNT_dec(PL_toptarget);
a0714e2c 1004 PL_toptarget = NULL;
5c831c24 1005 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1006 PL_bodytarget = NULL;
1007 PL_formtarget = NULL;
5c831c24 1008
d33b2eba 1009 /* free locale stuff */
b9582b6a 1010#ifdef USE_LOCALE_COLLATE
d33b2eba 1011 Safefree(PL_collation_name);
bd61b366 1012 PL_collation_name = NULL;
b9582b6a 1013#endif
d33b2eba 1014
b9582b6a 1015#ifdef USE_LOCALE_NUMERIC
d33b2eba 1016 Safefree(PL_numeric_name);
bd61b366 1017 PL_numeric_name = NULL;
a453c169 1018 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1019 PL_numeric_radix_sv = NULL;
b9582b6a 1020#endif
d33b2eba 1021
9c0b6888
KW
1022 /* clear character classes */
1023 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1024 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1025 PL_utf8_swash_ptrs[i] = NULL;
1026 }
5c831c24
GS
1027 SvREFCNT_dec(PL_utf8_mark);
1028 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1029 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1030 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1031 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1032 SvREFCNT_dec(PL_utf8_idstart);
1033 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1034 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1035 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b
KW
1036 SvREFCNT_dec(PL_AboveLatin1);
1037 SvREFCNT_dec(PL_UpperLatin1);
1038 SvREFCNT_dec(PL_Latin1);
1039 SvREFCNT_dec(PL_NonL1NonFinalFold);
1040 SvREFCNT_dec(PL_HasMultiCharFold);
a0714e2c
SS
1041 PL_utf8_mark = NULL;
1042 PL_utf8_toupper = NULL;
1043 PL_utf8_totitle = NULL;
1044 PL_utf8_tolower = NULL;
1045 PL_utf8_tofold = NULL;
1046 PL_utf8_idstart = NULL;
1047 PL_utf8_idcont = NULL;
2726813d 1048 PL_utf8_foldclosures = NULL;
9fa9f06b
KW
1049 PL_AboveLatin1 = NULL;
1050 PL_HasMultiCharFold = NULL;
1051 PL_Latin1 = NULL;
1052 PL_NonL1NonFinalFold = NULL;
1053 PL_UpperLatin1 = NULL;
86f72d56 1054 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1055 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1056 PL_XPosix_ptrs[i] = NULL;
86f72d56 1057 }
5c831c24 1058
971a9dd3 1059 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1060 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1061 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1062 cophh_free(CopHINTHASH_get(&PL_compiling));
1063 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1064 CopFILE_free(&PL_compiling);
5c831c24 1065
a0d0e21e 1066 /* Prepare to destruct main symbol table. */
5f05dabc 1067
3280af22 1068 hv = PL_defstash;
ca556bcd
DM
1069 /* break ref loop *:: <=> %:: */
1070 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1071 PL_defstash = 0;
a0d0e21e 1072 SvREFCNT_dec(hv);
5c831c24 1073 SvREFCNT_dec(PL_curstname);
a0714e2c 1074 PL_curstname = NULL;
a0d0e21e 1075
5a844595
GS
1076 /* clear queued errors */
1077 SvREFCNT_dec(PL_errors);
a0714e2c 1078 PL_errors = NULL;
5a844595 1079
dd69841b
BB
1080 SvREFCNT_dec(PL_isarev);
1081
a0d0e21e 1082 FREETMPS;
9b387841 1083 if (destruct_level >= 2) {
3280af22 1084 if (PL_scopestack_ix != 0)
9b387841
NC
1085 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1086 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1087 (long)PL_scopestack_ix);
3280af22 1088 if (PL_savestack_ix != 0)
9b387841
NC
1089 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1090 "Unbalanced saves: %ld more saves than restores\n",
1091 (long)PL_savestack_ix);
3280af22 1092 if (PL_tmps_floor != -1)
9b387841
NC
1093 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1094 (long)PL_tmps_floor + 1);
a0d0e21e 1095 if (cxstack_ix != -1)
9b387841
NC
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1097 (long)cxstack_ix + 1);
a0d0e21e 1098 }
8990e307 1099
0547a729
DM
1100#ifdef USE_ITHREADS
1101 SvREFCNT_dec(PL_regex_padav);
1102 PL_regex_padav = NULL;
1103 PL_regex_pad = NULL;
1104#endif
1105
776df701 1106#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1107 /* the entries in this list are allocated via SV PVX's, so get freed
1108 * in sv_clean_all */
1109 Safefree(PL_my_cxt_list);
776df701 1110#endif
57bb2458 1111
8990e307 1112 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1113
1114 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1115 while (sv_clean_all() > 2)
5226ed68
JH
1116 ;
1117
23083432
FC
1118#ifdef USE_ITHREADS
1119 Safefree(PL_stashpad); /* must come after sv_clean_all */
1120#endif
1121
d4777f27
GS
1122 AvREAL_off(PL_fdpid); /* no surviving entries */
1123 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1124 PL_fdpid = NULL;
d33b2eba 1125
6c644e78
GS
1126#ifdef HAVE_INTERP_INTERN
1127 sys_intern_clear();
1128#endif
1129
a38ab475
RZ
1130 /* constant strings */
1131 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1132 SvREFCNT_dec(PL_sv_consts[i]);
1133 PL_sv_consts[i] = NULL;
1134 }
1135
6e72f9df
PP
1136 /* Destruct the global string table. */
1137 {
1138 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1139 * so that sv_free() won't fail on them.
80459961
NC
1140 * Now that the global string table is using a single hunk of memory
1141 * for both HE and HEK, we either need to explicitly unshare it the
1142 * correct way, or actually free things here.
6e72f9df 1143 */
80459961
NC
1144 I32 riter = 0;
1145 const I32 max = HvMAX(PL_strtab);
c4420975 1146 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1147 HE *hent = array[0];
1148
6e72f9df 1149 for (;;) {
0453d815 1150 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1151 HE * const next = HeNEXT(hent);
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1153 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1154 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1155 Safefree(hent);
1156 hent = next;
6e72f9df
PP
1157 }
1158 if (!hent) {
1159 if (++riter > max)
1160 break;
1161 hent = array[riter];
1162 }
1163 }
80459961
NC
1164
1165 Safefree(array);
1166 HvARRAY(PL_strtab) = 0;
1167 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1168 }
3280af22 1169 SvREFCNT_dec(PL_strtab);
6e72f9df 1170
e652bb2f 1171#ifdef USE_ITHREADS
c21d1a0f 1172 /* free the pointer tables used for cloning */
a0739874 1173 ptr_table_free(PL_ptr_table);
bf9cdc68 1174 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1175#endif
a0739874 1176
d33b2eba
GS
1177 /* free special SVs */
1178
1179 SvREFCNT(&PL_sv_yes) = 0;
1180 sv_clear(&PL_sv_yes);
1181 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1182 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1183
1184 SvREFCNT(&PL_sv_no) = 0;
1185 sv_clear(&PL_sv_no);
1186 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1187 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1188
9f375a43
DM
1189 {
1190 int i;
1191 for (i=0; i<=2; i++) {
1192 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1193 sv_clear(PERL_DEBUG_PAD(i));
1194 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1195 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1196 }
1197 }
1198
0453d815 1199 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1200 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1201
eba0f806
DM
1202#ifdef DEBUG_LEAKING_SCALARS
1203 if (PL_sv_count != 0) {
1204 SV* sva;
1205 SV* sv;
eb578fdb 1206 SV* svend;
eba0f806 1207
ad64d0ec 1208 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1209 svend = &sva[SvREFCNT(sva)];
1210 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1211 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1212 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1213 " flags=0x%"UVxf
fd0854ff 1214 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1215 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1216 "serial %"UVuf"\n",
574b8821
NC
1217 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1218 pTHX__VALUE,
fd0854ff
DM
1219 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1220 sv->sv_debug_line,
1221 sv->sv_debug_inpad ? "for" : "by",
1222 sv->sv_debug_optype ?
1223 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1224 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1225 sv->sv_debug_serial
fd0854ff 1226 );
2aa47728 1227#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1228 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1229#endif
eba0f806
DM
1230 }
1231 }
1232 }
1233 }
2aa47728
NC
1234#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1235 {
1236 int status;
1237 fd_set rset;
1238 /* Wait for up to 4 seconds for child to terminate.
1239 This seems to be the least effort way of timing out on reaping
1240 its exit status. */
1241 struct timeval waitfor = {4, 0};
41e4abd8 1242 int sock = PL_dumper_fd;
2aa47728
NC
1243
1244 shutdown(sock, 1);
1245 FD_ZERO(&rset);
1246 FD_SET(sock, &rset);
1247 select(sock + 1, &rset, NULL, NULL, &waitfor);
1248 waitpid(child, &status, WNOHANG);
1249 close(sock);
1250 }
1251#endif
eba0f806 1252#endif
77abb4c6
NC
1253#ifdef DEBUG_LEAKING_SCALARS_ABORT
1254 if (PL_sv_count)
1255 abort();
1256#endif
bf9cdc68 1257 PL_sv_count = 0;
eba0f806 1258
56a2bab7 1259#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1260 /* No more IO - including error messages ! */
1261 PerlIO_cleanup(aTHX);
1262#endif
1263
9f4bd222 1264 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1265 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1266 for no arg - and will try and SvREFCNT_dec it.
1267 */
1268 SvREFCNT(&PL_sv_undef) = 0;
1269 SvREADONLY_off(&PL_sv_undef);
1270
3280af22 1271 Safefree(PL_origfilename);
bd61b366 1272 PL_origfilename = NULL;
43c5f42d 1273 Safefree(PL_reg_curpm);
dd28f7bb 1274 free_tied_hv_pool();
3280af22 1275 Safefree(PL_op_mask);
cf36064f 1276 Safefree(PL_psig_name);
bf9cdc68 1277 PL_psig_name = (SV**)NULL;
d525a7b2 1278 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1279 {
1280 /* We need to NULL PL_psig_pend first, so that
1281 signal handlers know not to use it */
1282 int *psig_save = PL_psig_pend;
1283 PL_psig_pend = (int*)NULL;
1284 Safefree(psig_save);
1285 }
6e72f9df 1286 nuke_stacks();
284167a5
SM
1287 TAINTING_set(FALSE);
1288 TAINT_WARN_set(FALSE);
3280af22 1289 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1290 PL_debug = 0;
ac27b0f5 1291
a0d0e21e 1292 DEBUG_P(debprofdump());
d33b2eba 1293
e5dd39fc 1294#ifdef USE_REENTRANT_API
10bc17b6 1295 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1296#endif
1297
612f20c3
GS
1298 sv_free_arenas();
1299
5d9a96ca
DM
1300 while (PL_regmatch_slab) {
1301 regmatch_slab *s = PL_regmatch_slab;
1302 PL_regmatch_slab = PL_regmatch_slab->next;
1303 Safefree(s);
1304 }
1305
fc36a67e
PP
1306 /* As the absolutely last thing, free the non-arena SV for mess() */
1307
3280af22 1308 if (PL_mess_sv) {
f350b448
NC
1309 /* we know that type == SVt_PVMG */
1310
9c63abab 1311 /* it could have accumulated taint magic */
f350b448
NC
1312 MAGIC* mg;
1313 MAGIC* moremagic;
1314 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1315 moremagic = mg->mg_moremagic;
1316 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1317 && mg->mg_len >= 0)
1318 Safefree(mg->mg_ptr);
1319 Safefree(mg);
9c63abab 1320 }
f350b448 1321
fc36a67e 1322 /* we know that type >= SVt_PV */
8bd4d4c5 1323 SvPV_free(PL_mess_sv);
3280af22
NIS
1324 Safefree(SvANY(PL_mess_sv));
1325 Safefree(PL_mess_sv);
a0714e2c 1326 PL_mess_sv = NULL;
fc36a67e 1327 }
37038d91 1328 return STATUS_EXIT;
79072805
LW
1329}
1330
954c1994
GS
1331/*
1332=for apidoc perl_free
1333
1334Releases a Perl interpreter. See L<perlembed>.
1335
1336=cut
1337*/
1338
79072805 1339void
0cb96387 1340perl_free(pTHXx)
79072805 1341{
5174512c
NC
1342 dVAR;
1343
7918f24d
NC
1344 PERL_ARGS_ASSERT_PERL_FREE;
1345
c301d606
DM
1346 if (PL_veto_cleanup)
1347 return;
1348
7cb608b5 1349#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1350 {
1351 /*
1352 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1353 * value as we're probably hunting memory leaks then
1354 */
36e77d41 1355 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1356 const U32 old_debug = PL_debug;
55ef9aae
MHM
1357 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1358 thread at thread exit. */
4fd0a9b8
NC
1359 if (DEBUG_m_TEST) {
1360 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1361 "free this thread's memory\n");
1362 PL_debug &= ~ DEBUG_m_FLAG;
1363 }
55ef9aae 1364 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
a78adc84 1365 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1366 PL_debug = old_debug;
55ef9aae
MHM
1367 }
1368 }
7cb608b5
NC
1369#endif
1370
acfe0abc 1371#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1372# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1373 {
acfe0abc 1374# ifdef NETWARE
7af12a34 1375 void *host = nw_internal_host;
7af12a34 1376 PerlMem_free(aTHXx);
7af12a34 1377 nw_delete_internal_host(host);
acfe0abc 1378# else
bdb50480
NC
1379 void *host = w32_internal_host;
1380 PerlMem_free(aTHXx);
7af12a34 1381 win32_delete_internal_host(host);
acfe0abc 1382# endif
7af12a34 1383 }
1c0ca838
GS
1384# else
1385 PerlMem_free(aTHXx);
1386# endif
acfe0abc
GS
1387#else
1388 PerlMem_free(aTHXx);
76e3520e 1389#endif
79072805
LW
1390}
1391
b7f7fff6 1392#if defined(USE_ITHREADS)
aebd1ac7
GA
1393/* provide destructors to clean up the thread key when libperl is unloaded */
1394#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1395
826955bd 1396#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1397#pragma fini "perl_fini"
666ad1ec
GA
1398#elif defined(__sun) && !defined(__GNUC__)
1399#pragma fini (perl_fini)
aebd1ac7
GA
1400#endif
1401
0dbb1585
AL
1402static void
1403#if defined(__GNUC__)
1404__attribute__((destructor))
aebd1ac7 1405#endif
de009b76 1406perl_fini(void)
aebd1ac7 1407{
27da23d5 1408 dVAR;
5c64bffd
NC
1409 if (
1410#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1411 my_vars &&
1412#endif
1413 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1414 FREE_THREAD_KEY;
1415}
1416
1417#endif /* WIN32 */
1418#endif /* THREADS */
1419
4b556e6c 1420void
864dbfa3 1421Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1422{
3280af22
NIS
1423 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1424 PL_exitlist[PL_exitlistlen].fn = fn;
1425 PL_exitlist[PL_exitlistlen].ptr = ptr;
1426 ++PL_exitlistlen;
4b556e6c
JD
1427}
1428
954c1994
GS
1429/*
1430=for apidoc perl_parse
1431
1432Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1433
1434=cut
1435*/
1436
03d9f026
FC
1437#define SET_CURSTASH(newstash) \
1438 if (PL_curstash != newstash) { \
1439 SvREFCNT_dec(PL_curstash); \
1440 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1441 }
1442
79072805 1443int
0cb96387 1444perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1445{
27da23d5 1446 dVAR;
6224f72b 1447 I32 oldscope;
6224f72b 1448 int ret;
db36c5a1 1449 dJMPENV;
8d063cd8 1450
7918f24d
NC
1451 PERL_ARGS_ASSERT_PERL_PARSE;
1452#ifndef MULTIPLICITY
ed6c66dd 1453 PERL_UNUSED_ARG(my_perl);
7918f24d 1454#endif
7dc86639 1455#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1456 {
7dc86639
YO
1457 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1458
96e440d2 1459 if (s && (grok_atou(s, NULL) == 1)) {
7dc86639
YO
1460 unsigned char *seed= PERL_HASH_SEED;
1461 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1462 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1463 while (seed < seed_end) {
1464 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1465 }
6a5b4183
YO
1466#ifdef PERL_HASH_RANDOMIZE_KEYS
1467 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1468 PL_HASH_RAND_BITS_ENABLED,
1469 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1470#endif
7dc86639
YO
1471 PerlIO_printf(Perl_debug_log, "\n");
1472 }
b0891165
JH
1473 }
1474#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1475 PL_origargc = argc;
e2975953 1476 PL_origargv = argv;
a0d0e21e 1477
a2722ac9
GA
1478 if (PL_origalen != 0) {
1479 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1480 }
1481 else {
3cb9023d
JH
1482 /* Set PL_origalen be the sum of the contiguous argv[]
1483 * elements plus the size of the env in case that it is
e9137a8e 1484 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1485 * as the maximum modifiable length of $0. In the worst case
1486 * the area we are able to modify is limited to the size of
43c32782 1487 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1488 * --jhi */
e1ec3a88 1489 const char *s = NULL;
54bfe034 1490 int i;
b7249aaf 1491 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1492 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1493 const UV aligned =
43c32782
JH
1494 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1495
1496 /* See if all the arguments are contiguous in memory. Note
1497 * that 'contiguous' is a loose term because some platforms
1498 * align the argv[] and the envp[]. If the arguments look
1499 * like non-aligned, assume that they are 'strictly' or
1500 * 'traditionally' contiguous. If the arguments look like
1501 * aligned, we just check that they are within aligned
1502 * PTRSIZE bytes. As long as no system has something bizarre
1503 * like the argv[] interleaved with some other data, we are
1504 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1505 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1506 while (*s) s++;
1507 for (i = 1; i < PL_origargc; i++) {
1508 if ((PL_origargv[i] == s + 1
43c32782 1509#ifdef OS2
c8941eeb 1510 || PL_origargv[i] == s + 2
43c32782 1511#endif
c8941eeb
JH
1512 )
1513 ||
1514 (aligned &&
1515 (PL_origargv[i] > s &&
1516 PL_origargv[i] <=
1517 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1518 )
1519 {
1520 s = PL_origargv[i];
1521 while (*s) s++;
1522 }
1523 else
1524 break;
54bfe034 1525 }
54bfe034 1526 }
a4a109c2
JD
1527
1528#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1529 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1530 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1531 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1532 ||
1533 (aligned &&
1534 (PL_origenviron[0] > s &&
1535 PL_origenviron[0] <=
1536 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1537 )
1538 {
9d419b5f 1539#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1540 s = PL_origenviron[0];
1541 while (*s) s++;
1542#endif
bd61b366 1543 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1544 /* Force copy of environment. */
1545 for (i = 1; PL_origenviron[i]; i++) {
1546 if (PL_origenviron[i] == s + 1
1547 ||
1548 (aligned &&
1549 (PL_origenviron[i] > s &&
1550 PL_origenviron[i] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1552 )
1553 {
1554 s = PL_origenviron[i];
1555 while (*s) s++;
1556 }
1557 else
1558 break;
54bfe034 1559 }
43c32782 1560 }
54bfe034 1561 }
a4a109c2
JD
1562#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1563
2d2af554 1564 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1565 }
1566
3280af22 1567 if (PL_do_undump) {
a0d0e21e
LW
1568
1569 /* Come here if running an undumped a.out. */
1570
3280af22
NIS
1571 PL_origfilename = savepv(argv[0]);
1572 PL_do_undump = FALSE;
a0d0e21e 1573 cxstack_ix = -1; /* start label stack again */
748a9306 1574 init_ids();
284167a5 1575 assert (!TAINT_get);
b7975bdd 1576 TAINT;
e2051532 1577 set_caret_X();
b7975bdd 1578 TAINT_NOT;
a0d0e21e
LW
1579 init_postdump_symbols(argc,argv,env);
1580 return 0;
1581 }
1582
3280af22 1583 if (PL_main_root) {
3280af22 1584 op_free(PL_main_root);
5f66b61c 1585 PL_main_root = NULL;
ff0cee69 1586 }
5f66b61c 1587 PL_main_start = NULL;
3280af22 1588 SvREFCNT_dec(PL_main_cv);
601f1833 1589 PL_main_cv = NULL;
79072805 1590
3280af22
NIS
1591 time(&PL_basetime);
1592 oldscope = PL_scopestack_ix;
599cee73 1593 PL_dowarn = G_WARN_OFF;
f86702cc 1594
14dd3ad8 1595 JMPENV_PUSH(ret);
6224f72b 1596 switch (ret) {
312caa8e 1597 case 0:
14dd3ad8 1598 parse_body(env,xsinit);
9ebf26ad 1599 if (PL_unitcheckav) {
3c10abe3 1600 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1601 }
1602 if (PL_checkav) {
ca7b837b 1603 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1604 call_list(oldscope, PL_checkav);
9ebf26ad 1605 }
14dd3ad8
GS
1606 ret = 0;
1607 break;
6224f72b
GS
1608 case 1:
1609 STATUS_ALL_FAILURE;
924ba076 1610 /* FALLTHROUGH */
6224f72b
GS
1611 case 2:
1612 /* my_exit() was called */
3280af22 1613 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1614 LEAVE;
1615 FREETMPS;
03d9f026 1616 SET_CURSTASH(PL_defstash);
9ebf26ad 1617 if (PL_unitcheckav) {
3c10abe3 1618 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1619 }
1620 if (PL_checkav) {
ca7b837b 1621 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1622 call_list(oldscope, PL_checkav);
9ebf26ad 1623 }
37038d91 1624 ret = STATUS_EXIT;
14dd3ad8 1625 break;
6224f72b 1626 case 3:
bf49b057 1627 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1628 ret = 1;
1629 break;
6224f72b 1630 }
14dd3ad8
GS
1631 JMPENV_POP;
1632 return ret;
1633}
1634
4a5df386
NC
1635/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1636 miniperl, and we need to see those flags reflected in the values here. */
1637
1638/* What this returns is subject to change. Use the public interface in Config.
1639 */
1640static void
1641S_Internals_V(pTHX_ CV *cv)
1642{
1643 dXSARGS;
1644#ifdef LOCAL_PATCH_COUNT
1645 const int local_patch_count = LOCAL_PATCH_COUNT;
1646#else
1647 const int local_patch_count = 0;
1648#endif
2dc296d2 1649 const int entries = 3 + local_patch_count;
4a5df386 1650 int i;
fe1c5936 1651 static const char non_bincompat_options[] =
4a5df386
NC
1652# ifdef DEBUGGING
1653 " DEBUGGING"
1654# endif
1655# ifdef NO_MATHOMS
0d311fbe 1656 " NO_MATHOMS"
4a5df386 1657# endif
59b86f4b
DM
1658# ifdef NO_HASH_SEED
1659 " NO_HASH_SEED"
1660# endif
3b0e4ee2
MB
1661# ifdef NO_TAINT_SUPPORT
1662 " NO_TAINT_SUPPORT"
1663# endif
cb26ef7a
MB
1664# ifdef PERL_BOOL_AS_CHAR
1665 " PERL_BOOL_AS_CHAR"
1666# endif
4a5df386
NC
1667# ifdef PERL_DISABLE_PMC
1668 " PERL_DISABLE_PMC"
1669# endif
1670# ifdef PERL_DONT_CREATE_GVSV
1671 " PERL_DONT_CREATE_GVSV"
1672# endif
9a044a43
NC
1673# ifdef PERL_EXTERNAL_GLOB
1674 " PERL_EXTERNAL_GLOB"
1675# endif
59b86f4b
DM
1676# ifdef PERL_HASH_FUNC_SIPHASH
1677 " PERL_HASH_FUNC_SIPHASH"
1678# endif
1679# ifdef PERL_HASH_FUNC_SDBM
1680 " PERL_HASH_FUNC_SDBM"
1681# endif
1682# ifdef PERL_HASH_FUNC_DJB2
1683 " PERL_HASH_FUNC_DJB2"
1684# endif
1685# ifdef PERL_HASH_FUNC_SUPERFAST
1686 " PERL_HASH_FUNC_SUPERFAST"
1687# endif
1688# ifdef PERL_HASH_FUNC_MURMUR3
1689 " PERL_HASH_FUNC_MURMUR3"
1690# endif
1691# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1692 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1693# endif
1694# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1695 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1696# endif
1697# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1698 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1699# endif
4a5df386
NC
1700# ifdef PERL_IS_MINIPERL
1701 " PERL_IS_MINIPERL"
1702# endif
1703# ifdef PERL_MALLOC_WRAP
1704 " PERL_MALLOC_WRAP"
1705# endif
1706# ifdef PERL_MEM_LOG
1707 " PERL_MEM_LOG"
1708# endif
1709# ifdef PERL_MEM_LOG_NOIMPL
1710 " PERL_MEM_LOG_NOIMPL"
1711# endif
2542212d
DM
1712# ifdef PERL_NEW_COPY_ON_WRITE
1713 " PERL_NEW_COPY_ON_WRITE"
1714# endif
59b86f4b
DM
1715# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1716 " PERL_PERTURB_KEYS_DETERMINISTIC"
1717# endif
1718# ifdef PERL_PERTURB_KEYS_DISABLED
1719 " PERL_PERTURB_KEYS_DISABLED"
1720# endif
1721# ifdef PERL_PERTURB_KEYS_RANDOM
1722 " PERL_PERTURB_KEYS_RANDOM"
1723# endif
c3cf41ec
NC
1724# ifdef PERL_PRESERVE_IVUV
1725 " PERL_PRESERVE_IVUV"
1726# endif
c051e30b
NC
1727# ifdef PERL_RELOCATABLE_INCPUSH
1728 " PERL_RELOCATABLE_INCPUSH"
1729# endif
4a5df386
NC
1730# ifdef PERL_USE_DEVEL
1731 " PERL_USE_DEVEL"
1732# endif
1733# ifdef PERL_USE_SAFE_PUTENV
1734 " PERL_USE_SAFE_PUTENV"
1735# endif
a3749cf3
NC
1736# ifdef UNLINK_ALL_VERSIONS
1737 " UNLINK_ALL_VERSIONS"
1738# endif
de618ee4
NC
1739# ifdef USE_ATTRIBUTES_FOR_PERLIO
1740 " USE_ATTRIBUTES_FOR_PERLIO"
1741# endif
4a5df386
NC
1742# ifdef USE_FAST_STDIO
1743 " USE_FAST_STDIO"
1744# endif
59b86f4b
DM
1745# ifdef USE_HASH_SEED_EXPLICIT
1746 " USE_HASH_SEED_EXPLICIT"
1747# endif
98548bdf
NC
1748# ifdef USE_LOCALE
1749 " USE_LOCALE"
1750# endif
98548bdf
NC
1751# ifdef USE_LOCALE_CTYPE
1752 " USE_LOCALE_CTYPE"
1753# endif
5a8d8935
NC
1754# ifdef USE_PERL_ATOF
1755 " USE_PERL_ATOF"
1756# endif
0d311fbe
NC
1757# ifdef USE_SITECUSTOMIZE
1758 " USE_SITECUSTOMIZE"
1759# endif
4a5df386
NC
1760 ;
1761 PERL_UNUSED_ARG(cv);
1762 PERL_UNUSED_ARG(items);
1763
1764 EXTEND(SP, entries);
1765
1766 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1767 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1768 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1769
1770#ifdef __DATE__
1771# ifdef __TIME__
1772 PUSHs(Perl_newSVpvn_flags(aTHX_
1773 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1774 SVs_TEMP));
1775# else
1776 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1777 SVs_TEMP));
1778# endif
1779#else
1780 PUSHs(&PL_sv_undef);
1781#endif
1782
4a5df386
NC
1783 for (i = 1; i <= local_patch_count; i++) {
1784 /* This will be an undef, if PL_localpatches[i] is NULL. */
1785 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1786 }
1787
1788 XSRETURN(entries);
1789}
1790
be71fc8f
NC
1791#define INCPUSH_UNSHIFT 0x01
1792#define INCPUSH_ADD_OLD_VERS 0x02
1793#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1794#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1795#define INCPUSH_NOT_BASEDIR 0x10
1796#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1797#define INCPUSH_ADD_SUB_DIRS \
1798 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1799
312caa8e 1800STATIC void *
14dd3ad8 1801S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1802{
27da23d5 1803 dVAR;
2f9285f8 1804 PerlIO *rsfp;
312caa8e 1805 int argc = PL_origargc;
8f42b153 1806 char **argv = PL_origargv;
e1ec3a88 1807 const char *scriptname = NULL;
312caa8e 1808 VOL bool dosearch = FALSE;
eb578fdb 1809 char c;
737c24fc 1810 bool doextract = FALSE;
bd61b366 1811 const char *cddir = NULL;
ab019eaa 1812#ifdef USE_SITECUSTOMIZE
20ef40cf 1813 bool minus_f = FALSE;
ab019eaa 1814#endif
95670bde 1815 SV *linestr_sv = NULL;
5486870f 1816 bool add_read_e_script = FALSE;
87606032 1817 U32 lex_start_flags = 0;
009d90df 1818
ca7b837b 1819 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1820
6224f72b 1821 init_main_stash();
54310121 1822
c7030b81
NC
1823 {
1824 const char *s;
6224f72b
GS
1825 for (argc--,argv++; argc > 0; argc--,argv++) {
1826 if (argv[0][0] != '-' || !argv[0][1])
1827 break;
6224f72b
GS
1828 s = argv[0]+1;
1829 reswitch:
47f56822 1830 switch ((c = *s)) {
729a02f2 1831 case 'C':
1d5472a9
GS
1832#ifndef PERL_STRICT_CR
1833 case '\r':
1834#endif
6224f72b
GS
1835 case ' ':
1836 case '0':
1837 case 'F':
1838 case 'a':
1839 case 'c':
1840 case 'd':
1841 case 'D':
1842 case 'h':
1843 case 'i':
1844 case 'l':
1845 case 'M':
1846 case 'm':
1847 case 'n':
1848 case 'p':
1849 case 's':
1850 case 'u':
1851 case 'U':
1852 case 'v':
599cee73
PM
1853 case 'W':
1854 case 'X':
6224f72b 1855 case 'w':
97bd5664 1856 if ((s = moreswitches(s)))
6224f72b
GS
1857 goto reswitch;
1858 break;
33b78306 1859
1dbad523 1860 case 't':
dc6d7f5c 1861#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1862 /* silently ignore */
dc6d7f5c 1863#elif defined(NO_TAINT_SUPPORT)
3231f579 1864 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1865 "Cowardly refusing to run with -t or -T flags");
1866#else
22f7c9c9 1867 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1868 if( !TAINTING_get ) {
1869 TAINT_WARN_set(TRUE);
1870 TAINTING_set(TRUE);
317ea90d 1871 }
284167a5 1872#endif
317ea90d
MS
1873 s++;
1874 goto reswitch;
6224f72b 1875 case 'T':
dc6d7f5c 1876#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1877 /* silently ignore */
dc6d7f5c 1878#elif defined(NO_TAINT_SUPPORT)
3231f579 1879 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1880 "Cowardly refusing to run with -t or -T flags");
1881#else
22f7c9c9 1882 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1883 TAINTING_set(TRUE);
1884 TAINT_WARN_set(FALSE);
1885#endif
6224f72b
GS
1886 s++;
1887 goto reswitch;
f86702cc 1888
bc9b29db
RH
1889 case 'E':
1890 PL_minus_E = TRUE;
924ba076 1891 /* FALLTHROUGH */
6224f72b 1892 case 'e':
f20b2998 1893 forbid_setid('e', FALSE);
3280af22 1894 if (!PL_e_script) {
396482e1 1895 PL_e_script = newSVpvs("");
5486870f 1896 add_read_e_script = TRUE;
6224f72b
GS
1897 }
1898 if (*++s)
3280af22 1899 sv_catpv(PL_e_script, s);
6224f72b 1900 else if (argv[1]) {
3280af22 1901 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1902 argc--,argv++;
1903 }
1904 else
47f56822 1905 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1906 sv_catpvs(PL_e_script, "\n");
6224f72b 1907 break;
afe37c7d 1908
20ef40cf 1909 case 'f':
f5542d3a 1910#ifdef USE_SITECUSTOMIZE
20ef40cf 1911 minus_f = TRUE;
f5542d3a 1912#endif
20ef40cf
GA
1913 s++;
1914 goto reswitch;
1915
6224f72b 1916 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1917 forbid_setid('I', FALSE);
bd61b366 1918 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1919 argc--,argv++;
1920 }
6224f72b 1921 if (s && *s) {
0df16ed7 1922 STRLEN len = strlen(s);
55b4bc1c 1923 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1924 }
1925 else
a67e862a 1926 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1927 break;
6224f72b 1928 case 'S':
f20b2998 1929 forbid_setid('S', FALSE);
6224f72b
GS
1930 dosearch = TRUE;
1931 s++;
1932 goto reswitch;
1933 case 'V':
7edfd0ef
NC
1934 {
1935 SV *opts_prog;
1936
7edfd0ef 1937 if (*++s != ':') {
37ca4a5b 1938 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1939 }
1940 else {
1941 ++s;
1942 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1943 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1944 0, s, 0);
1945 s += strlen(s);
1946 }
37ca4a5b 1947 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1948 /* don't look for script or read stdin */
1949 scriptname = BIT_BUCKET;
1950 goto reswitch;
6224f72b 1951 }
6224f72b 1952 case 'x':
737c24fc 1953 doextract = TRUE;
6224f72b 1954 s++;
304334da 1955 if (*s)
f4c556ac 1956 cddir = s;
6224f72b
GS
1957 break;
1958 case 0:
1959 break;
1960 case '-':
1961 if (!*++s || isSPACE(*s)) {
1962 argc--,argv++;
1963 goto switch_end;
1964 }
ee8bc8b7
NC
1965 /* catch use of gnu style long options.
1966 Both of these exit immediately. */
1967 if (strEQ(s, "version"))
1968 minus_v();
1969 if (strEQ(s, "help"))
1970 usage();
6224f72b 1971 s--;
924ba076 1972 /* FALLTHROUGH */
6224f72b 1973 default:
cea2e8a9 1974 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1975 }
1976 }
c7030b81
NC
1977 }
1978
6224f72b 1979 switch_end:
54310121 1980
c7030b81
NC
1981 {
1982 char *s;
1983
f675dbe5
CB
1984 if (
1985#ifndef SECURE_INTERNAL_GETENV
284167a5 1986 !TAINTING_get &&
f675dbe5 1987#endif
cf756827 1988 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1989 {
74288ac8
GS
1990 while (isSPACE(*s))
1991 s++;
317ea90d 1992 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 1993#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1994 /* silently ignore */
dc6d7f5c 1995#elif defined(NO_TAINT_SUPPORT)
3231f579 1996 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1997 "Cowardly refusing to run with -t or -T flags");
1998#else
22f7c9c9 1999 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2000 TAINTING_set(TRUE);
2001 TAINT_WARN_set(FALSE);
2002#endif
317ea90d 2003 }
74288ac8 2004 else {
bd61b366 2005 char *popt_copy = NULL;
74288ac8 2006 while (s && *s) {
54913509 2007 const char *d;
74288ac8
GS
2008 while (isSPACE(*s))
2009 s++;
2010 if (*s == '-') {
2011 s++;
2012 if (isSPACE(*s))
2013 continue;
2014 }
4ea8f8fb 2015 d = s;
74288ac8
GS
2016 if (!*s)
2017 break;
2b622f1a 2018 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2019 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2020 while (++s && *s) {
2021 if (isSPACE(*s)) {
cf756827 2022 if (!popt_copy) {
bfa6c418
NC
2023 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2024 s = popt_copy + (s - d);
2025 d = popt_copy;
cf756827 2026 }
4ea8f8fb
MS
2027 *s++ = '\0';
2028 break;
2029 }
2030 }
1c4db469 2031 if (*d == 't') {
dc6d7f5c 2032#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2033 /* silently ignore */
dc6d7f5c 2034#elif defined(NO_TAINT_SUPPORT)
3231f579 2035 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2036 "Cowardly refusing to run with -t or -T flags");
2037#else
2038 if( !TAINTING_get) {
2039 TAINT_WARN_set(TRUE);
2040 TAINTING_set(TRUE);
317ea90d 2041 }
284167a5 2042#endif
1c4db469 2043 } else {
97bd5664 2044 moreswitches(d);
1c4db469 2045 }
6224f72b 2046 }
6224f72b
GS
2047 }
2048 }
c7030b81 2049 }
a0d0e21e 2050
c29067d7
CH
2051 /* Set $^X early so that it can be used for relocatable paths in @INC */
2052 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2053 assert (!TAINT_get);
c29067d7 2054 TAINT;
e2051532 2055 set_caret_X();
c29067d7
CH
2056 TAINT_NOT;
2057
43c0c913 2058#if defined(USE_SITECUSTOMIZE)
20ef40cf 2059 if (!minus_f) {
43c0c913 2060 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2061 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2062 ie a q() operator with a NUL byte as a the delimiter. This avoids
2063 problems with pathnames containing (say) ' */
43c0c913
NC
2064# ifdef PERL_IS_MINIPERL
2065 AV *const inc = GvAV(PL_incgv);
2066 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2067
2068 if (inc0) {
15870c5c
NC
2069 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2070 it should be reported immediately as a build failure. */
43c0c913
NC
2071 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2072 Perl_newSVpvf(aTHX_
9054c817
FC
2073 "BEGIN { do {local $!; -f q%c./%"SVf
2074 "/buildcustomize.pl%c} and do q%c./%"SVf
2075 "/buildcustomize.pl%c || die $@ }",
c1f6cd39
BF
2076 0, SVfARG(*inc0), 0,
2077 0, SVfARG(*inc0), 0));
43c0c913
NC
2078 }
2079# else
2080 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2081 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2082 if (raw_sitelib) {
2083 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2084 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2085 INCPUSH_CAN_RELOCATE);
2086 const char *const sitelib = SvPVX(sitelib_sv);
2087 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2088 Perl_newSVpvf(aTHX_
2089 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2090 0, SVfARG(sitelib), 0,
2091 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2092 assert (SvREFCNT(sitelib_sv) == 1);
2093 SvREFCNT_dec(sitelib_sv);
2094 }
43c0c913 2095# endif
20ef40cf
GA
2096 }
2097#endif
2098
6224f72b
GS
2099 if (!scriptname)
2100 scriptname = argv[0];
3280af22 2101 if (PL_e_script) {
6224f72b
GS
2102 argc++,argv--;
2103 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2104 }
bd61b366 2105 else if (scriptname == NULL) {
6224f72b
GS
2106#ifdef MSDOS
2107 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2108 moreswitches("h");
6224f72b
GS
2109#endif
2110 scriptname = "-";
2111 }
2112
284167a5 2113 assert (!TAINT_get);
2cace6ac 2114 init_perllib();
6224f72b 2115
a52eba0e 2116 {
f20b2998 2117 bool suidscript = FALSE;
829372d3 2118
8d113837 2119 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2120 if (!rsfp) {
2121 rsfp = PerlIO_stdin();
87606032 2122 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2123 }
6224f72b 2124
b24bc095 2125 validate_suid(rsfp);
6224f72b 2126
64ca3a65 2127#ifndef PERL_MICRO
a52eba0e
NC
2128# if defined(SIGCHLD) || defined(SIGCLD)
2129 {
2130# ifndef SIGCHLD
2131# define SIGCHLD SIGCLD
2132# endif
2133 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2134 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2135 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2136 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2137 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2138 }
0b5b802d 2139 }
a52eba0e 2140# endif
64ca3a65 2141#endif
0b5b802d 2142
737c24fc 2143 if (doextract) {
faef540c 2144
f20b2998 2145 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2146 setuid scripts. */
2147 forbid_setid('x', suidscript);
f20b2998 2148 /* Hence you can't get here if suidscript is true */
faef540c 2149
95670bde
NC
2150 linestr_sv = newSV_type(SVt_PV);
2151 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2152 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2153 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2154 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2155 }
f4c556ac 2156 }
6224f72b 2157
ea726b52 2158 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2159 CvUNIQUE_on(PL_compcv);
2160
dd2155a4 2161 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2162
dd69841b
BB
2163 PL_isarev = newHV();
2164
0c4f7ff0 2165 boot_core_PerlIO();
6224f72b 2166 boot_core_UNIVERSAL();
e1a479c5 2167 boot_core_mro();
4a5df386 2168 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2169
2170 if (xsinit)
acfe0abc 2171 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2172#ifndef PERL_MICRO
739a0b84 2173#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2174 init_os_extras();
6224f72b 2175#endif
64ca3a65 2176#endif
6224f72b 2177
29209bc5 2178#ifdef USE_SOCKS
1b9c9cf5
DH
2179# ifdef HAS_SOCKS5_INIT
2180 socks5_init(argv[0]);
2181# else
29209bc5 2182 SOCKSinit(argv[0]);
1b9c9cf5 2183# endif
ac27b0f5 2184#endif
29209bc5 2185
6224f72b
GS
2186 init_predump_symbols();
2187 /* init_postdump_symbols not currently designed to be called */
2188 /* more than once (ENV isn't cleared first, for example) */
2189 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2190 if (!PL_do_undump)
6224f72b
GS
2191 init_postdump_symbols(argc,argv,env);
2192
27da23d5
JH
2193 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2194 * or explicitly in some platforms.
085a54d9 2195 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2196 * look like the user wants to use UTF-8. */
a0fd4948 2197#if defined(__SYMBIAN32__)
27da23d5
JH
2198 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2199#endif
e27b5b51 2200# ifndef PERL_IS_MINIPERL
06e66572
JH
2201 if (PL_unicode) {
2202 /* Requires init_predump_symbols(). */
a05d7ebb 2203 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2204 IO* io;
2205 PerlIO* fp;
2206 SV* sv;
2207
a05d7ebb 2208 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2209 * and the default open disciplines. */
a05d7ebb
JH
2210 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2211 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2212 (fp = IoIFP(io)))
2213 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2214 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2215 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2216 (fp = IoOFP(io)))
2217 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2218 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2219 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2220 (fp = IoOFP(io)))
2221 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2222 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2223 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2224 SVt_PV)))) {
a05d7ebb
JH
2225 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2226 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2227 if (in) {
2228 if (out)
76f68e9b 2229 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2230 else
76f68e9b 2231 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2232 }
2233 else if (out)
76f68e9b 2234 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2235 SvSETMAGIC(sv);
2236 }
b310b053
JH
2237 }
2238 }
e27b5b51 2239#endif
b310b053 2240
c7030b81
NC
2241 {
2242 const char *s;
4ffa73a3
JH
2243 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2244 if (strEQ(s, "unsafe"))
2245 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2246 else if (strEQ(s, "safe"))
2247 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2248 else
2249 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2250 }
c7030b81 2251 }
4ffa73a3 2252
81d86705 2253
87606032 2254 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2255 SvREFCNT_dec(linestr_sv);
95670bde 2256
219f7226 2257 PL_subname = newSVpvs("main");
6224f72b 2258
5486870f
DM
2259 if (add_read_e_script)
2260 filter_add(read_e_script, NULL);
2261
6224f72b
GS
2262 /* now parse the script */
2263
93189314 2264 SETERRNO(0,SS_NORMAL);
28ac2b49 2265 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2266 if (PL_minus_c)
cea2e8a9 2267 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2268 else {
cea2e8a9 2269 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2270 PL_origfilename);
6224f72b
GS
2271 }
2272 }
57843af0 2273 CopLINE_set(PL_curcop, 0);
03d9f026 2274 SET_CURSTASH(PL_defstash);
3280af22
NIS
2275 if (PL_e_script) {
2276 SvREFCNT_dec(PL_e_script);
a0714e2c 2277 PL_e_script = NULL;
6224f72b
GS
2278 }
2279
3280af22 2280 if (PL_do_undump)
6224f72b
GS
2281 my_unexec();
2282
57843af0
GS
2283 if (isWARN_ONCE) {
2284 SAVECOPFILE(PL_curcop);
2285 SAVECOPLINE(PL_curcop);
3280af22 2286 gv_check(PL_defstash);
57843af0 2287 }
6224f72b
GS
2288
2289 LEAVE;
2290 FREETMPS;
2291
2292#ifdef MYMALLOC
f6a607bc
RGS
2293 {
2294 const char *s;
96e440d2
JH
2295 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2296 dump_mstats("after compilation:");
f6a607bc 2297 }
6224f72b
GS
2298#endif
2299
2300 ENTER;
febb3a6d 2301 PL_restartjmpenv = NULL;
3280af22 2302 PL_restartop = 0;
312caa8e 2303 return NULL;
6224f72b
GS
2304}
2305
954c1994
GS
2306/*
2307=for apidoc perl_run
2308
2309Tells a Perl interpreter to run. See L<perlembed>.
2310
2311=cut
2312*/
2313
6224f72b 2314int
0cb96387 2315perl_run(pTHXx)
6224f72b 2316{
6224f72b 2317 I32 oldscope;
14dd3ad8 2318 int ret = 0;
db36c5a1 2319 dJMPENV;
6224f72b 2320
7918f24d
NC
2321 PERL_ARGS_ASSERT_PERL_RUN;
2322#ifndef MULTIPLICITY
ed6c66dd 2323 PERL_UNUSED_ARG(my_perl);
7918f24d 2324#endif
9d4ba2ae 2325
3280af22 2326 oldscope = PL_scopestack_ix;
96e176bf
CL
2327#ifdef VMS
2328 VMSISH_HUSHED = 0;
2329#endif
6224f72b 2330
14dd3ad8 2331 JMPENV_PUSH(ret);
6224f72b
GS
2332 switch (ret) {
2333 case 1:
2334 cxstack_ix = -1; /* start context stack again */
312caa8e 2335 goto redo_body;
14dd3ad8 2336 case 0: /* normal completion */
14dd3ad8
GS
2337 redo_body:
2338 run_body(oldscope);
924ba076 2339 /* FALLTHROUGH */
14dd3ad8 2340 case 2: /* my_exit() */
3280af22 2341 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2342 LEAVE;
2343 FREETMPS;
03d9f026 2344 SET_CURSTASH(PL_defstash);
3a1ee7e8 2345 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2346 PL_endav && !PL_minus_c) {
ca7b837b 2347 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2348 call_list(oldscope, PL_endav);
9ebf26ad 2349 }
6224f72b
GS
2350#ifdef MYMALLOC
2351 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2352 dump_mstats("after execution: ");
2353#endif
37038d91 2354 ret = STATUS_EXIT;
14dd3ad8 2355 break;
6224f72b 2356 case 3:
312caa8e
CS
2357 if (PL_restartop) {
2358 POPSTACK_TO(PL_mainstack);
2359 goto redo_body;
6224f72b 2360 }
5637ef5b 2361 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2362 FREETMPS;
14dd3ad8
GS
2363 ret = 1;
2364 break;
6224f72b
GS
2365 }
2366
14dd3ad8
GS
2367 JMPENV_POP;
2368 return ret;
312caa8e
CS
2369}
2370
dd374669 2371STATIC void
14dd3ad8
GS
2372S_run_body(pTHX_ I32 oldscope)
2373{
d3b97530
DM
2374 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2375 PL_sawampersand ? "Enabling" : "Omitting",
2376 (unsigned int)(PL_sawampersand)));
6224f72b 2377
3280af22 2378 if (!PL_restartop) {
cf2782cd 2379#ifdef DEBUGGING
f0e3f042
CS
2380 if (DEBUG_x_TEST || DEBUG_B_TEST)
2381 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2382 if (!DEBUG_q_TEST)
2383 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2384#endif
6224f72b 2385
3280af22 2386 if (PL_minus_c) {
bf49b057 2387 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2388 my_exit(0);
2389 }
3280af22 2390 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2391 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2392 if (PL_initav) {
ca7b837b 2393 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2394 call_list(oldscope, PL_initav);
9ebf26ad 2395 }
f1fac472 2396#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2397 if (PL_main_root && PL_main_root->op_slabbed)
2398 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2399#endif
6224f72b
GS
2400 }
2401
2402 /* do it */
2403
ca7b837b 2404 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2405
3280af22 2406 if (PL_restartop) {
febb3a6d 2407 PL_restartjmpenv = NULL;
533c011a 2408 PL_op = PL_restartop;
3280af22 2409 PL_restartop = 0;
cea2e8a9 2410 CALLRUNOPS(aTHX);
6224f72b 2411 }
3280af22
NIS
2412 else if (PL_main_start) {
2413 CvDEPTH(PL_main_cv) = 1;
533c011a 2414 PL_op = PL_main_start;
cea2e8a9 2415 CALLRUNOPS(aTHX);
6224f72b 2416 }
f6b3007c 2417 my_exit(0);
a25b5927 2418 assert(0); /* NOTREACHED */
6224f72b
GS
2419}
2420
954c1994 2421/*
ccfc67b7
JH
2422=head1 SV Manipulation Functions
2423
954c1994
GS
2424=for apidoc p||get_sv
2425
64ace3f8 2426Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2427C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2428Perl variable does not exist then it will be created. If C<flags> is zero
2429and the variable does not exist then NULL is returned.
954c1994
GS
2430
2431=cut
2432*/
2433
6224f72b 2434SV*
64ace3f8 2435Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2436{
2437 GV *gv;
7918f24d
NC
2438
2439 PERL_ARGS_ASSERT_GET_SV;
2440
64ace3f8 2441 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2442 if (gv)
2443 return GvSV(gv);
a0714e2c 2444 return NULL;
6224f72b
GS
2445}
2446
954c1994 2447/*
ccfc67b7
JH
2448=head1 Array Manipulation Functions
2449
954c1994
GS
2450=for apidoc p||get_av
2451
f0b90de1
SF
2452Returns the AV of the specified Perl global or package array with the given
2453name (so it won't work on lexical variables). C<flags> are passed
72d33970 2454to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2455Perl variable does not exist then it will be created. If C<flags> is zero
2456and the variable does not exist then NULL is returned.
954c1994 2457
f0b90de1
SF
2458Perl equivalent: C<@{"$name"}>.
2459
954c1994
GS
2460=cut
2461*/
2462
6224f72b 2463AV*
cbfd0a87 2464Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2465{
cbfd0a87 2466 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2467
2468 PERL_ARGS_ASSERT_GET_AV;
2469
cbfd0a87 2470 if (flags)
6224f72b
GS
2471 return GvAVn(gv);
2472 if (gv)
2473 return GvAV(gv);
7d49f689 2474 return NULL;
6224f72b
GS
2475}
2476
954c1994 2477/*
ccfc67b7
JH
2478=head1 Hash Manipulation Functions
2479
954c1994
GS
2480=for apidoc p||get_hv
2481
6673a63c 2482Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2483C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2484Perl variable does not exist then it will be created. If C<flags> is zero
2485and the variable does not exist then NULL is returned.
954c1994
GS
2486
2487=cut
2488*/
2489
6224f72b 2490HV*
6673a63c 2491Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2492{
6673a63c 2493 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2494
2495 PERL_ARGS_ASSERT_GET_HV;
2496
6673a63c 2497 if (flags)
a0d0e21e
LW
2498 return GvHVn(gv);
2499 if (gv)
2500 return GvHV(gv);
5c284bb0 2501 return NULL;
a0d0e21e
LW
2502}
2503
954c1994 2504/*
ccfc67b7
JH
2505=head1 CV Manipulation Functions
2506
780a5241
NC
2507=for apidoc p||get_cvn_flags
2508
2509Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2510C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2511exist then it will be declared (which has the same effect as saying
2512C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2513then NULL is returned.
2514
954c1994
GS
2515=for apidoc p||get_cv
2516
780a5241 2517Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2518
2519=cut
2520*/
2521
a0d0e21e 2522CV*
780a5241 2523Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2524{
780a5241 2525 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2526
2527 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2528
334dda80
FC
2529 /* XXX this is probably not what they think they're getting.
2530 * It has the same effect as "sub name;", i.e. just a forward
2531 * declaration! */
780a5241 2532 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2533 return newSTUB(gv,0);
780a5241 2534 }
a0d0e21e 2535 if (gv)
8ebc5c01 2536 return GvCVu(gv);
601f1833 2537 return NULL;
a0d0e21e
LW
2538}
2539
2c67934f
NC
2540/* Nothing in core calls this now, but we can't replace it with a macro and
2541 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2542CV*
2543Perl_get_cv(pTHX_ const char *name, I32 flags)
2544{
7918f24d
NC
2545 PERL_ARGS_ASSERT_GET_CV;
2546
780a5241
NC
2547 return get_cvn_flags(name, strlen(name), flags);
2548}
2549
79072805
LW
2550/* Be sure to refetch the stack pointer after calling these routines. */
2551
954c1994 2552/*
ccfc67b7
JH
2553
2554=head1 Callback Functions
2555
954c1994
GS
2556=for apidoc p||call_argv
2557
f0b90de1 2558Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2559with C<argv> (a NULL-terminated array of strings) as arguments. See
2560L<perlcall>.
f0b90de1
SF
2561
2562Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2563
2564=cut
2565*/
2566
a0d0e21e 2567I32
5aaab254 2568Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2569
8ac85365
NIS
2570 /* See G_* flags in cop.h */
2571 /* null terminated arg list */
8990e307 2572{
a0d0e21e 2573 dSP;
8990e307 2574
7918f24d
NC
2575 PERL_ARGS_ASSERT_CALL_ARGV;
2576
924508f0 2577 PUSHMARK(SP);
a0d0e21e 2578 if (argv) {
8990e307 2579 while (*argv) {
6e449a3a 2580 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2581 argv++;
2582 }
a0d0e21e 2583 PUTBACK;
8990e307 2584 }
864dbfa3 2585 return call_pv(sub_name, flags);
8990e307
LW
2586}
2587
954c1994
GS
2588/*
2589=for apidoc p||call_pv
2590
2591Performs a callback to the specified Perl sub. See L<perlcall>.
2592
2593=cut
2594*/
2595
a0d0e21e 2596I32
864dbfa3 2597Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2598 /* name of the subroutine */
2599 /* See G_* flags in cop.h */
a0d0e21e 2600{
7918f24d
NC
2601 PERL_ARGS_ASSERT_CALL_PV;
2602
0da0e728 2603 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2604}
2605
954c1994
GS
2606/*
2607=for apidoc p||call_method
2608
2609Performs a callback to the specified Perl method. The blessed object must
2610be on the stack. See L<perlcall>.
2611
2612=cut
2613*/
2614
a0d0e21e 2615I32
864dbfa3 2616Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2617 /* name of the subroutine */
2618 /* See G_* flags in cop.h */
a0d0e21e 2619{
46ca9bac 2620 STRLEN len;
c106c2be 2621 SV* sv;
7918f24d
NC
2622 PERL_ARGS_ASSERT_CALL_METHOD;
2623
46ca9bac 2624 len = strlen(methname);
c106c2be
RZ
2625 sv = flags & G_METHOD_NAMED
2626 ? sv_2mortal(newSVpvn_share(methname, len,0))
2627 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2628
c106c2be 2629 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2630}
2631
2632/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2633/*
2634=for apidoc p||call_sv
2635
2636Performs a callback to the Perl sub whose name is in the SV. See
2637L<perlcall>.
2638
2639=cut
2640*/
2641
a0d0e21e 2642I32
001d637e 2643Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2644 /* See G_* flags in cop.h */
a0d0e21e 2645{
27da23d5 2646 dVAR; dSP;
a0d0e21e 2647 LOGOP myop; /* fake syntax tree node */
c106c2be
RZ
2648 UNOP method_unop;
2649 SVOP method_svop;
aa689395 2650 I32 oldmark;
8ea43dc8 2651 VOL I32 retval = 0;
a0d0e21e 2652 I32 oldscope;
54310121 2653 bool oldcatch = CATCH_GET;
6224f72b 2654 int ret;
c4420975 2655 OP* const oldop = PL_op;
db36c5a1 2656 dJMPENV;
1e422769 2657
7918f24d
NC
2658 PERL_ARGS_ASSERT_CALL_SV;
2659
a0d0e21e
LW
2660 if (flags & G_DISCARD) {
2661 ENTER;
2662 SAVETMPS;
2663 }
2f8edad0
NC
2664 if (!(flags & G_WANT)) {
2665 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2666 */
2667 flags |= G_SCALAR;
2668 }
a0d0e21e 2669
aa689395 2670 Zero(&myop, 1, LOGOP);
f51d4af5 2671 if (!(flags & G_NOARGS))
aa689395 2672 myop.op_flags |= OPf_STACKED;
4f911530 2673 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2674 SAVEOP();
533c011a 2675 PL_op = (OP*)&myop;
aa689395 2676
3280af22 2677 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2678 if (!(flags & G_METHOD_NAMED))
2679 *++PL_stack_sp = sv;
aa689395 2680 oldmark = TOPMARK;
3280af22 2681 oldscope = PL_scopestack_ix;
a0d0e21e 2682
3280af22 2683 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2684 /* Handle first BEGIN of -d. */
3280af22 2685 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2686 /* Try harder, since this may have been a sighandler, thus
2687 * curstash may be meaningless. */
ea726b52 2688 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2689 && !(flags & G_NODEBUG))
5ff48db8 2690 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2691
c106c2be
RZ
2692 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2693 if ( flags & G_METHOD_NAMED ) {
2694 Zero(&method_svop, 1, SVOP);
2695 method_svop.op_next = (OP*)&myop;
2696 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2697 method_svop.op_type = OP_METHOD_NAMED;
2698 method_svop.op_sv = sv;
2699 PL_op = (OP*)&method_svop;
2700 } else {
2701 Zero(&method_unop, 1, UNOP);
2702 method_unop.op_next = (OP*)&myop;
2703 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2704 method_unop.op_type = OP_METHOD;
2705 PL_op = (OP*)&method_unop;
2706 }
2707 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2708 myop.op_type = OP_ENTERSUB;
2709
968b3946
GS
2710 }
2711
312caa8e 2712 if (!(flags & G_EVAL)) {
0cdb2077 2713 CATCH_SET(TRUE);
d6f07c05 2714 CALL_BODY_SUB((OP*)&myop);
312caa8e 2715 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2716 CATCH_SET(oldcatch);
312caa8e
CS
2717 }
2718 else {
d78bda3d 2719 myop.op_other = (OP*)&myop;
3280af22 2720 PL_markstack_ptr--;
edb2152a 2721 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2722 PL_markstack_ptr++;
a0d0e21e 2723
14dd3ad8 2724 JMPENV_PUSH(ret);
edb2152a 2725
6224f72b
GS
2726 switch (ret) {
2727 case 0:
14dd3ad8 2728 redo_body:
d6f07c05 2729 CALL_BODY_SUB((OP*)&myop);
312caa8e 2730 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2731 if (!(flags & G_KEEPERR)) {
ab69dbc2 2732 CLEAR_ERRSV();
8433848b 2733 }
a0d0e21e 2734 break;
6224f72b 2735 case 1:
f86702cc 2736 STATUS_ALL_FAILURE;
924ba076 2737 /* FALLTHROUGH */
6224f72b 2738 case 2:
a0d0e21e 2739 /* my_exit() was called */
03d9f026 2740 SET_CURSTASH(PL_defstash);
a0d0e21e 2741 FREETMPS;
14dd3ad8 2742 JMPENV_POP;
f86702cc 2743 my_exit_jump();
a25b5927 2744 assert(0); /* NOTREACHED */
6224f72b 2745 case 3:
3280af22 2746 if (PL_restartop) {
febb3a6d 2747 PL_restartjmpenv = NULL;
533c011a 2748 PL_op = PL_restartop;
3280af22 2749 PL_restartop = 0;
312caa8e 2750 goto redo_body;
a0d0e21e 2751 }
3280af22 2752 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2753 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2754 retval = 0;
2755 else {
2756 retval = 1;
3280af22 2757 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2758 }
312caa8e 2759 break;
a0d0e21e 2760 }
a0d0e21e 2761
edb2152a
NC
2762 if (PL_scopestack_ix > oldscope)
2763 delete_eval_scope();
14dd3ad8 2764 JMPENV_POP;
a0d0e21e 2765 }
1e422769 2766
a0d0e21e 2767 if (flags & G_DISCARD) {
3280af22 2768 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2769 retval = 0;
2770 FREETMPS;
2771 LEAVE;
2772 }
533c011a 2773 PL_op = oldop;
a0d0e21e
LW
2774 return retval;
2775}
2776
6e72f9df 2777/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2778
954c1994
GS
2779/*
2780=for apidoc p||eval_sv
2781
72d33970
FC
2782Tells Perl to C<eval> the string in the SV. It supports the same flags
2783as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2784
2785=cut
2786*/
2787
a0d0e21e 2788I32
864dbfa3 2789Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2790
8ac85365 2791 /* See G_* flags in cop.h */
a0d0e21e 2792{
97aff369 2793 dVAR;
924508f0 2794 dSP;
a0d0e21e 2795 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2796 VOL I32 oldmark = SP - PL_stack_base;
2797 VOL I32 retval = 0;
6224f72b 2798 int ret;
c4420975 2799 OP* const oldop = PL_op;
db36c5a1 2800 dJMPENV;
84902520 2801
7918f24d
NC
2802 PERL_ARGS_ASSERT_EVAL_SV;
2803
4633a7c4
LW
2804 if (flags & G_DISCARD) {
2805 ENTER;
2806 SAVETMPS;
2807 }
2808
462e5cf6 2809 SAVEOP();
533c011a 2810 PL_op = (OP*)&myop;
5ff48db8 2811 Zero(&myop, 1, UNOP);
3280af22
NIS
2812 EXTEND(PL_stack_sp, 1);
2813 *++PL_stack_sp = sv;
79072805 2814
4633a7c4
LW
2815 if (!(flags & G_NOARGS))
2816 myop.op_flags = OPf_STACKED;
6e72f9df 2817 myop.op_type = OP_ENTEREVAL;
4f911530 2818 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2819 if (flags & G_KEEPERR)
2820 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2821
2822 if (flags & G_RE_REPARSING)
2823 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2824
dedbcade
DM
2825 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2826 * before a PUSHEVAL, which corrupts the stack after a croak */
2827 TAINT_PROPER("eval_sv()");
2828
14dd3ad8 2829 JMPENV_PUSH(ret);
6224f72b
GS
2830 switch (ret) {
2831 case 0:
14dd3ad8 2832 redo_body:
2ba65d5f
DM
2833 if (PL_op == (OP*)(&myop)) {
2834 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2835 if (!PL_op)
2836 goto fail; /* failed in compilation */
2837 }
4aca2f62 2838 CALLRUNOPS(aTHX);
312caa8e 2839 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2840 if (!(flags & G_KEEPERR)) {
ab69dbc2 2841 CLEAR_ERRSV();
8433848b 2842 }
4633a7c4 2843 break;
6224f72b 2844 case 1:
f86702cc 2845 STATUS_ALL_FAILURE;
924ba076 2846 /* FALLTHROUGH */
6224f72b 2847 case 2:
4633a7c4 2848 /* my_exit() was called */
03d9f026 2849 SET_CURSTASH(PL_defstash);
4633a7c4 2850 FREETMPS;
14dd3ad8 2851 JMPENV_POP;
f86702cc 2852 my_exit_jump();
a25b5927 2853 assert(0); /* NOTREACHED */
6224f72b 2854 case 3:
3280af22 2855 if (PL_restartop) {
febb3a6d 2856 PL_restartjmpenv = NULL;
533c011a 2857 PL_op = PL_restartop;
3280af22 2858 PL_restartop = 0;
312caa8e 2859 goto redo_body;
4633a7c4 2860 }
4aca2f62 2861 fail:
3280af22 2862 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2863 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2864 retval = 0;
2865 else {
2866 retval = 1;
3280af22 2867 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2868 }
312caa8e 2869 break;
4633a7c4
LW
2870 }
2871
14dd3ad8 2872 JMPENV_POP;
4633a7c4 2873 if (flags & G_DISCARD) {
3280af22 2874 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2875 retval = 0;
2876 FREETMPS;
2877 LEAVE;
2878 }
533c011a 2879 PL_op = oldop;
4633a7c4
LW
2880 return retval;
2881}
2882
954c1994
GS
2883/*
2884=for apidoc p||eval_pv
2885
422791e4 2886Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2887
2888=cut
2889*/
2890
137443ea 2891SV*
864dbfa3 2892Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2893{
137443ea
PP
2894 SV* sv = newSVpv(p, 0);
2895
7918f24d
NC
2896 PERL_ARGS_ASSERT_EVAL_PV;
2897
864dbfa3 2898 eval_sv(sv, G_SCALAR);
137443ea
PP
2899 SvREFCNT_dec(sv);
2900
ed1786ad
DD
2901 {
2902 dSP;
2903 sv = POPs;
2904 PUTBACK;
2905 }
137443ea 2906
eed484f9
DD
2907 /* just check empty string or undef? */
2908 if (croak_on_error) {
2909 SV * const errsv = ERRSV;
2910 if(SvTRUE_NN(errsv))
2911 /* replace with croak_sv? */
2912 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2913 }
137443ea
PP
2914
2915 return sv;
2916}
2917
4633a7c4
LW
2918/* Require a module. */
2919
954c1994 2920/*
ccfc67b7
JH
2921=head1 Embedding Functions
2922
954c1994
GS
2923=for apidoc p||require_pv
2924
7d3fb230
BS
2925Tells Perl to C<require> the file named by the string argument. It is
2926analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2927implemented that way; consider using load_module instead.
954c1994 2928
7d3fb230 2929=cut */
954c1994 2930
4633a7c4 2931void
864dbfa3 2932Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2933{
d3acc0f7 2934 dSP;
97aff369 2935 SV* sv;
7918f24d
NC
2936
2937 PERL_ARGS_ASSERT_REQUIRE_PV;
2938
e788e7d3 2939 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2940 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2941 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2942 POPSTACK;
79072805
LW
2943}
2944
76e3520e 2945STATIC void
b6f82619 2946S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2947{
ab821d7f 2948 /* This message really ought to be max 23 lines.
75c72d73 2949 * Removed -h because the user already knows that option. Others? */
fb73857a 2950
1566c39d
NC
2951 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2952 minimum of 509 character string literals. */
27da23d5 2953 static const char * const usage_msg[] = {
1566c39d
NC
2954" -0[octal] specify record separator (\\0, if no argument)\n"
2955" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2956" -C[number/list] enables the listed Unicode features\n"
2957" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2958" -d[:debugger] run program under debugger\n"
2959" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2960" -e program one line of program (several -e's allowed, omit programfile)\n"
2961" -E program like -e, but enables all optional features\n"
2962" -f don't do $sitelib/sitecustomize.pl at startup\n"
2963" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2964" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2965" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2966" -l[octal] enable line ending processing, specifies line terminator\n"
2967" -[mM][-]module execute \"use/no module...\" before executing program\n"
2968" -n assume \"while (<>) { ... }\" loop around program\n"
2969" -p assume loop like -n but print line also, like sed\n"
2970" -s enable rudimentary parsing for switches after programfile\n"
2971" -S look for programfile using PATH environment variable\n",
2972" -t enable tainting warnings\n"
2973" -T enable tainting checks\n"
2974" -u dump core after parsing program\n"
2975" -U allow unsafe operations\n"
2976" -v print version, patchlevel and license\n"
2977" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2978" -w enable many useful warnings\n"
1566c39d
NC
2979" -W enable all warnings\n"
2980" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2981" -X disable all warnings\n"
2982" \n"
2983"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2984NULL
2985};
27da23d5 2986 const char * const *p = usage_msg;
1566c39d 2987 PerlIO *out = PerlIO_stdout();
fb73857a 2988
1566c39d
NC
2989 PerlIO_printf(out,
2990 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2991 PL_origargv[0]);
fb73857a 2992 while (*p)
1566c39d 2993 PerlIO_puts(out, *p++);
b6f82619 2994 my_exit(0);
4633a7c4
LW
2995}
2996
b4ab917c
DM
2997/* convert a string of -D options (or digits) into an int.
2998 * sets *s to point to the char after the options */
2999
3000#ifdef DEBUGGING
3001int
e1ec3a88 3002Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3003{
27da23d5 3004 static const char * const usage_msgd[] = {
651b8f1a
NC
3005 " Debugging flag values: (see also -d)\n"
3006 " p Tokenizing and parsing (with v, displays parse stack)\n"
3007 " s Stack snapshots (with v, displays all stacks)\n"
3008 " l Context (loop) stack processing\n"
3009 " t Trace execution\n"
3010 " o Method and overloading resolution\n",
3011 " c String/numeric conversions\n"
3012 " P Print profiling info, source file input state\n"
3013 " m Memory and SV allocation\n"
3014 " f Format processing\n"
3015 " r Regular expression parsing and execution\n"
3016 " x Syntax tree dump\n",
3017 " u Tainting checks\n"
3018 " H Hash dump -- usurps values()\n"
3019 " X Scratchpad allocation\n"
3020 " D Cleaning up\n"
56967202 3021 " S Op slab allocation\n"
651b8f1a
NC
3022 " T Tokenising\n"
3023 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3024 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3025 " v Verbose: use in conjunction with other flags\n"
3026 " C Copy On Write\n"
3027 " A Consistency checks on internal structures\n"
3028 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3029 " M trace smart match resolution\n"
3030 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3031 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3032 NULL
3033 };
b4ab917c 3034 int i = 0;
7918f24d
NC
3035
3036 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3037
b4ab917c
DM
3038 if (isALPHA(**s)) {
3039 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3040 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3041
0eb30aeb 3042 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3043 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3044 if (d)
3045 i |= 1 << (d - debopts);
3046 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3047 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3048 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3049 }
3050 }
e6e64d9b 3051 else if (isDIGIT(**s)) {
96e440d2
JH
3052 const char* e;
3053 i = grok_atou(*s, &e);
3054 if (e)
3055 *s = e;
0eb30aeb 3056 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3057 }
ddcf8bc1 3058 else if (givehelp) {
06e869a4 3059 const char *const *p = usage_msgd;
651b8f1a 3060 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3061 }
b4ab917c
DM
3062# ifdef EBCDIC
3063 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3064 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3065 "-Dp not implemented on this platform\n");
3066# endif
3067 return i;
3068}
3069#endif
3070
79072805
LW
3071/* This routine handles any switches that can be given during run */
3072
c7030b81
NC
3073const char *
3074Perl_moreswitches(pTHX_ const char *s)
79072805 3075{
27da23d5 3076 dVAR;
84c133a0 3077 UV rschar;
0544e6df 3078 const char option = *s; /* used to remember option in -m/-M code */
79072805 3079
7918f24d
NC
3080 PERL_ARGS_ASSERT_MORESWITCHES;
3081
79072805
LW
3082 switch (*s) {
3083 case '0':
a863c7d1 3084 {
f2095865 3085 I32 flags = 0;
a3b680e6 3086 STRLEN numlen;
f2095865
JH
3087
3088 SvREFCNT_dec(PL_rs);
3089 if (s[1] == 'x' && s[2]) {
a3b680e6 3090 const char *e = s+=2;
f2095865
JH
3091 U8 *tmps;
3092
a3b680e6
AL
3093 while (*e)
3094 e++;
f2095865
JH
3095 numlen = e - s;
3096 flags = PERL_SCAN_SILENT_ILLDIGIT;
3097 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3098 if (s + numlen < e) {
3099 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3100 numlen = 0;
3101 s--;
3102 }
396482e1 3103 PL_rs = newSVpvs("");
c5661c80 3104 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3105 tmps = (U8*)SvPVX(PL_rs);
3106 uvchr_to_utf8(tmps, rschar);
3107 SvCUR_set(PL_rs, UNISKIP(rschar));
3108 SvUTF8_on(PL_rs);
3109 }
3110 else {
3111 numlen = 4;
3112 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3113 if (rschar & ~((U8)~0))
3114 PL_rs = &PL_sv_undef;
3115 else if (!rschar && numlen >= 2)
396482e1 3116 PL_rs = newSVpvs("");
f2095865
JH
3117 else {
3118 char ch = (char)rschar;
3119 PL_rs = newSVpvn(&ch, 1);
3120 }
3121 }
64ace3f8 3122 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3123 return s + numlen;
a863c7d1 3124 }
46487f74 3125 case 'C':
a05d7ebb 3126 s++;
dd374669 3127 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3128 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3129 PL_utf8cache = -1;
46487f74 3130 return s;
2304df62 3131 case 'F':
5fc691f1 3132 PL_minus_a = TRUE;
3280af22 3133 PL_minus_F = TRUE;
24ffa309 3134 PL_minus_n = TRUE;
ebce5377
RGS
3135 PL_splitstr = ++s;
3136 while (*s && !isSPACE(*s)) ++s;
e49e380e 3137 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3138 return s;
79072805 3139 case 'a':
3280af22 3140 PL_minus_a = TRUE;
24ffa309 3141 PL_minus_n = TRUE;
79072805
LW
3142 s++;
3143 return s;
3144 case 'c':
3280af22 3145 PL_minus_c = TRUE;
79072805
LW
3146 s++;
3147 return s;
3148 case 'd':
f20b2998 3149 forbid_setid('d', FALSE);
4633a7c4 3150 s++;
2cbb2ee1
RGS
3151
3152 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3153 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3154 ++s;
3155 my_setenv("PERL5DB_THREADED", "1");
3156 }
3157
70c94a19
RR
3158 /* The following permits -d:Mod to accepts arguments following an =
3159 in the fashion that -MSome::Mod does. */
3160 if (*s == ':' || *s == '=') {
b19934fb
NC
3161 const char *start;
3162 const char *end;
3163 SV *sv;
3164
3165 if (*++s == '-') {
3166 ++s;
3167 sv = newSVpvs("no Devel::");
3168 } else {
3169 sv = newSVpvs("use Devel::");
3170 }
3171
3172 start = s;
3173 end = s + strlen(s);
f85893a1 3174
b19934fb 3175 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3176 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3177 if (*s != '=')
f85893a1 3178 sv_catpvn(sv, start, end - start);
70c94a19
RR
3179 else {
3180 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3181 /* Don't use NUL as q// delimiter here, this string goes in the
3182 * environment. */
3183 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3184 }
f85893a1 3185 s = end;
184f32ec 3186 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3187 SvREFCNT_dec(sv);
4633a7c4 3188 }
ed094faf 3189 if (!PL_perldb) {
3280af22 3190 PL_perldb = PERLDB_ALL;
a0d0e21e 3191 init_debugger();
ed094faf 3192 }
79072805
LW
3193 return s;
3194 case 'D':
0453d815 3195 {
79072805 3196#ifdef DEBUGGING
f20b2998 3197 forbid_setid('D', FALSE);
b4ab917c 3198 s++;
dd374669 3199 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3200#else /* !DEBUGGING */
0453d815 3201 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3202 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3203 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3204 for (s++; isWORDCHAR(*s); s++) ;
79072805 3205#endif
79072805 3206 return s;
0453d815 3207 }
4633a7c4 3208 case 'h':
b6f82619 3209 usage();
79072805 3210 case 'i':
43c5f42d 3211 Safefree(PL_inplace);
c030f24b
GH
3212#if defined(__CYGWIN__) /* do backup extension automagically */
3213 if (*(s+1) == '\0') {
c86a4f2e 3214 PL_inplace = savepvs(".bak");
c030f24b
GH
3215 return s+1;
3216 }
3217#endif /* __CYGWIN__ */
5ef5d758 3218 {
d4c19fe8 3219 const char * const start = ++s;
5ef5d758
NC
3220 while (*s && !isSPACE(*s))
3221 ++s;
3222
3223 PL_inplace = savepvn(start, s - start);
3224 }
7b8d334a 3225 if (*s) {
5ef5d758 3226 ++s;
7b8d334a 3227 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3228 s++;
7b8d334a 3229 }
fb73857a 3230 return s;
4e49a025 3231 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3232 forbid_setid('I', FALSE);
fb73857a
PP
3233 ++s;
3234 while (*s && isSPACE(*s))
3235 ++s;
3236 if (*s) {
c7030b81 3237 const char *e, *p;
0df16ed7
GS
3238 p = s;
3239 /* ignore trailing spaces (possibly followed by other switches) */
3240 do {
3241 for (e = p; *e && !isSPACE(*e); e++) ;
3242 p = e;
3243 while (isSPACE(*p))
3244 p++;
3245 } while (*p && *p != '-');
55b4bc1c 3246 incpush(s, e-s,
e28f3139 3247 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3248 s = p;
3249 if (*s == '-')
3250 s++;
79072805
LW
3251 }
3252 else
a67e862a 3253 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3254 return s;
79072805 3255 case 'l':
3280af22 3256 PL_minus_l = TRUE;
79072805 3257 s++;
7889fe52
NIS
3258 if (PL_ors_sv) {
3259 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3260 PL_ors_sv = NULL;
7889fe52 3261 }
79072805 3262 if (isDIGIT(*s)) {
53305cf1 3263 I32 flags = 0;
a3b680e6 3264 STRLEN numlen;
396482e1 3265 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3266 numlen = 3 + (*s == '0');
3267 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3268 s += numlen;
3269 }
3270 else {
8bfdd7d9 3271 if (RsPARA(PL_rs)) {
396482e1 3272 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3273 }
3274 else {
8bfdd7d9 3275 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3276 }
79072805
LW
3277 }
3278 return s;
1a30305b 3279 case 'M':
f20b2998 3280 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3281 /* FALLTHROUGH */
1a30305b 3282 case 'm':
f20b2998 3283 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3284 if (*++s) {
c7030b81 3285 const char *start;
b64cb68c 3286 const char *end;
11343788 3287 SV *sv;
e1ec3a88 3288 const char *use = "use ";
0544e6df 3289 bool colon = FALSE;
a5f75d66 3290 /* -M-foo == 'no foo' */
d0043bd1
NC
3291 /* Leading space on " no " is deliberate, to make both
3292 possibilities the same length. */
3293 if (*s == '-') { use = " no "; ++s; }
3294 sv = newSVpvn(use,4);
a5f75d66 3295 start = s;
1a30305b 3296 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3297 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3298 if( *s++ == ':' ) {
3299 if( *s == ':' )
3300 s++;
3301 else
3302 colon = TRUE;
3303 }
3304 }
3305 if (s == start)
3306 Perl_croak(aTHX_ "Module name required with -%c option",
3307 option);
3308 if (colon)
3309 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3310 "contains single ':'",
63da6837 3311 (int)(s - start), start, option);
b64cb68c 3312 end = s + strlen(s);
c07a80fd 3313 if (*s != '=') {
b64cb68c 3314 sv_catpvn(sv, start, end - start);
0544e6df 3315 if (option == 'm') {
c07a80fd 3316 if (*s != '\0')
cea2e8a9 3317 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3318 sv_catpvs( sv, " ()");
c07a80fd
PP
3319 }
3320 } else {
11343788 3321 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3322 /* Use NUL as q''-delimiter. */
3323 sv_catpvs(sv, " split(/,/,q\0");
3324 ++s;
3325 sv_catpvn(sv, s, end - s);
396482e1 3326 sv_catpvs(sv, "\0)");
c07a80fd 3327 }
b64cb68c 3328 s = end;
29a861e7 3329 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3330 }
3331 else
0544e6df 3332 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3333 return s;
79072805 3334 case 'n':
3280af22 3335 PL_minus_n = TRUE;
79072805
LW
3336 s++;
3337 return s;
3338 case 'p':
3280af22 3339 PL_minus_p = TRUE;
79072805
LW
3340 s++;
3341 return s;
3342 case 's':
f20b2998 3343 forbid_setid('s', FALSE);
3280af22 3344 PL_doswitches = TRUE;
79072805
LW
3345 s++;
3346 return s;
6537fe72 3347 case 't':
27a6968b 3348 case 'T':
dc6d7f5c 3349#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3350 /* silently ignore */
dc6d7f5c 3351#elif defined(NO_TAINT_SUPPORT)
3231f579 3352 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3353 "Cowardly refusing to run with -t or -T flags");
3354#else
3355 if (!TAINTING_get)
27a6968b 3356 TOO_LATE_FOR(*s);
284167a5 3357#endif
6537fe72 3358 s++;
463ee0b2 3359 return s;
79072805 3360 case 'u':
3280af22 3361 PL_do_undump = TRUE;
79072805
LW
3362 s++;
3363 return s;
3364 case 'U':
3280af22 3365 PL_unsafe = TRUE;
79072805
LW
3366 s++;
3367 return s;
3368 case 'v':
c4bc78d9
NC
3369 minus_v();
3370 case 'w':
3371 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3372 PL_dowarn |= G_WARN_ON;
3373 }
3374 s++;
3375 return s;
3376 case 'W':
3377 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3378 if (!specialWARN(PL_compiling.cop_warnings))
3379 PerlMemShared_free(PL_compiling.cop_warnings);
3380 PL_compiling.cop_warnings = pWARN_ALL ;
3381 s++;
3382 return s;
3383 case 'X':
3384 PL_dowarn = G_WARN_ALL_OFF;
3385 if (!specialWARN(PL_compiling.cop_warnings))
3386 PerlMemShared_free(PL_compiling.cop_warnings);
3387 PL_compiling.cop_warnings = pWARN_NONE ;
3388 s++;
3389 return s;
3390 case '*':
3391 case ' ':
3392 while( *s == ' ' )
3393 ++s;
3394 if (s[0] == '-') /* Additional switches on #! line. */
3395 return s+1;
3396 break;
3397 case '-':
3398 case 0:
3399#if defined(WIN32) || !defined(PERL_STRICT_CR)
3400 case '\r':
3401#endif
3402 case '\n':
3403 case '\t':
3404 break;
3405#ifdef ALTERNATE_SHEBANG
3406 case 'S': /* OS/2 needs -S on "extproc" line. */
3407 break;
3408#endif
4bb78d63
CB
3409 case 'e': case 'f': case 'x': case 'E':
3410#ifndef ALTERNATE_SHEBANG
3411 case 'S':
3412#endif
3413 case 'V':
c4bc78d9 3414 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3415 default:
3416 Perl_croak(aTHX_
3417 "Unrecognized switch: -%.1s (-h will show valid options)",s
3418 );
c4bc78d9
NC
3419 }
3420 return NULL;
3421}
3422
3423
3424STATIC void
3425S_minus_v(pTHX)
3426{
fc3381af 3427 PerlIO * PIO_stdout;
46807d8e 3428 {
709aee94
DD
3429 const char * const level_str = "v" PERL_VERSION_STRING;
3430 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3431#ifdef PERL_PATCHNUM
709aee94 3432 SV* level;
23d483e2 3433# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3434 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3435# else
709aee94 3436 static const char num [] = PERL_PATCHNUM;
23d483e2 3437# endif
fc3381af 3438 {
709aee94
DD
3439 const STRLEN num_len = sizeof(num)-1;
3440 /* A very advanced compiler would fold away the strnEQ
3441 and this whole conditional, but most (all?) won't do it.
3442 SV level could also be replaced by with preprocessor
3443 catenation.
3444 */
3445 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3446 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3447 of the interp so it might contain format characters
3448 */
3449 level = newSVpvn(num, num_len);
fc3381af 3450 } else {
709aee94 3451 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3452 }
46807d8e 3453 }
709aee94
DD
3454#else
3455 SV* level = newSVpvn(level_str, level_len);
3456#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3457 PIO_stdout = PerlIO_stdout();
3458 PerlIO_printf(PIO_stdout,
ded326e4
DG
3459 "\nThis is perl " STRINGIFY(PERL_REVISION)
3460 ", version " STRINGIFY(PERL_VERSION)
3461 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3462 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3463 );
709aee94 3464 SvREFCNT_dec_NN(level);
46807d8e 3465 }
fb73857a
PP
3466#if defined(LOCAL_PATCH_COUNT)
3467 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3468 PerlIO_printf(PIO_stdout,
b0e47665
GS
3469 "\n(with %d registered patch%s, "
3470 "see perl -V for more detail)",
bb7a0f54 3471 LOCAL_PATCH_COUNT,
b0e47665 3472 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3473#endif
1a30305b 3474
fc3381af 3475 PerlIO_printf(PIO_stdout,
fb435042 3476 "\n\nCopyright 1987-2014, Larry Wall\n");
79072805 3477#ifdef MSDOS
fc3381af 3478 PerlIO_printf(PIO_stdout,
b0e47665 3479 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3480#endif
3481#ifdef DJGPP
fc3381af 3482 PerlIO_printf(PIO_stdout,
b0e47665
GS
3483 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3484 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3485#endif
79072805 3486#ifdef OS2
fc3381af 3487 PerlIO_printf(PIO_stdout,
b0e47665 3488 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3489 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3490#endif
9d116dd7 3491#ifdef OEMVS
fc3381af 3492 PerlIO_printf(PIO_stdout,