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Deparse.t: To-do test for #115066
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
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);
d7aa5382 328
27da23d5
JH
329#ifdef HAS_MMAP
330 if (!PL_mmap_page_size) {
331#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
332 {
333 SETERRNO(0, SS_NORMAL);
334# ifdef _SC_PAGESIZE
335 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
336# else
337 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
338# endif
339 if ((long) PL_mmap_page_size < 0) {
340 if (errno) {
44f8325f 341 SV * const error = ERRSV;
d4c19fe8 342 SvUPGRADE(error, SVt_PV);
0510663f 343 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
344 }
345 else
346 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
347 }
348 }
349#else
350# ifdef HAS_GETPAGESIZE
351 PL_mmap_page_size = getpagesize();
352# else
353# if defined(I_SYS_PARAM) && defined(PAGESIZE)
354 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
355# endif
356# endif
357#endif
358 if (PL_mmap_page_size <= 0)
359 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
360 (IV) PL_mmap_page_size);
361 }
362#endif /* HAS_MMAP */
363
364#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
365 PL_timesbase.tms_utime = 0;
366 PL_timesbase.tms_stime = 0;
367 PL_timesbase.tms_cutime = 0;
368 PL_timesbase.tms_cstime = 0;
369#endif
370
7d113631
NC
371 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
372
a3e6e81e 373 PL_registered_mros = newHV();
9e169432
NC
374 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
375 HvMAX(PL_registered_mros) = 0;
a3e6e81e 376
7b8dd5f4
KW
377 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
378 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
379 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
380 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
381 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
382 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
383 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
384 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
385 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
386 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
387 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
388 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
389 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
390 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
391 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
392 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
393 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
394
8990e307 395 ENTER;
79072805
LW
396}
397
954c1994 398/*
62375a60
NIS
399=for apidoc nothreadhook
400
401Stub that provides thread hook for perl_destruct when there are
402no threads.
403
404=cut
405*/
406
407int
4e9e3734 408Perl_nothreadhook(pTHX)
62375a60 409{
96a5add6 410 PERL_UNUSED_CONTEXT;
62375a60
NIS
411 return 0;
412}
413
41e4abd8
NC
414#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
415void
416Perl_dump_sv_child(pTHX_ SV *sv)
417{
418 ssize_t got;
bf357333
NC
419 const int sock = PL_dumper_fd;
420 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
421 union control_un control;
422 struct msghdr msg;
808ad2d0 423 struct iovec vec[2];
bf357333 424 struct cmsghdr *cmptr;
808ad2d0
NC
425 int returned_errno;
426 unsigned char buffer[256];
41e4abd8 427
7918f24d
NC
428 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
429
bf357333 430 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
431 return;
432
433 PerlIO_flush(Perl_debug_log);
434
bf357333
NC
435 /* All these shenanigans are to pass a file descriptor over to our child for
436 it to dump out to. We can't let it hold open the file descriptor when it
437 forks, as the file descriptor it will dump to can turn out to be one end
438 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 439 be open, the wait would be forever.) */
bf357333
NC
440
441 msg.msg_control = control.control;
442 msg.msg_controllen = sizeof(control.control);
443 /* We're a connected socket so we don't need a destination */
444 msg.msg_name = NULL;
445 msg.msg_namelen = 0;
446 msg.msg_iov = vec;
808ad2d0 447 msg.msg_iovlen = 1;
bf357333
NC
448
449 cmptr = CMSG_FIRSTHDR(&msg);
450 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
451 cmptr->cmsg_level = SOL_SOCKET;
452 cmptr->cmsg_type = SCM_RIGHTS;
453 *((int *)CMSG_DATA(cmptr)) = 1;
454
455 vec[0].iov_base = (void*)&sv;
456 vec[0].iov_len = sizeof(sv);
457 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
458
459 if(got < 0) {
bf357333 460 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
461 abort();
462 }
bf357333
NC
463 if(got < sizeof(sv)) {
464 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
465 abort();
466 }
467
808ad2d0
NC
468 /* Return protocol is
469 int: errno value
470 unsigned char: length of location string (0 for empty)
471 unsigned char*: string (not terminated)
472 */
473 vec[0].iov_base = (void*)&returned_errno;
474 vec[0].iov_len = sizeof(returned_errno);
475 vec[1].iov_base = buffer;
476 vec[1].iov_len = 1;
477
478 got = readv(sock, vec, 2);
41e4abd8
NC
479
480 if(got < 0) {
481 perror("Debug leaking scalars parent read failed");
808ad2d0 482 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
483 abort();
484 }
808ad2d0 485 if(got < sizeof(returned_errno) + 1) {
41e4abd8 486 perror("Debug leaking scalars parent short read");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
490
808ad2d0
NC
491 if (*buffer) {
492 got = read(sock, buffer + 1, *buffer);
493 if(got < 0) {
494 perror("Debug leaking scalars parent read 2 failed");
495 PerlIO_flush(PerlIO_stderr());
496 abort();
497 }
498
499 if(got < *buffer) {
500 perror("Debug leaking scalars parent short read 2");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504 }
505
506 if (returned_errno || *buffer) {
507 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
508 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 509 returned_errno, Strerror(returned_errno));
41e4abd8
NC
510 }
511}
512#endif
513
62375a60 514/*
954c1994
GS
515=for apidoc perl_destruct
516
517Shuts down a Perl interpreter. See L<perlembed>.
518
519=cut
520*/
521
31d77e54 522int
0cb96387 523perl_destruct(pTHXx)
79072805 524{
27da23d5 525 dVAR;
be2ea8ed 526 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 527 HV *hv;
2aa47728 528#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
529 pid_t child;
530#endif
9c0b6888 531 int i;
8990e307 532
7918f24d
NC
533 PERL_ARGS_ASSERT_PERL_DESTRUCT;
534#ifndef MULTIPLICITY
ed6c66dd 535 PERL_UNUSED_ARG(my_perl);
7918f24d 536#endif
9d4ba2ae 537
3d22c4f0
GG
538 assert(PL_scopestack_ix == 1);
539
7766f137
GS
540 /* wait for all pseudo-forked children to finish */
541 PERL_WAIT_FOR_CHILDREN;
542
3280af22 543 destruct_level = PL_perl_destruct_level;
36e77d41 544#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 545 {
9d4ba2ae
AL
546 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
547 if (s) {
96e440d2
JH
548 int i;
549 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
550 i = -1;
551 } else {
552 i = grok_atou(s, NULL);
553 }
36e77d41
DD
554#ifdef DEBUGGING
555 if (destruct_level < i) destruct_level = i;
556#endif
557#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
558 /* RT #114496, for perl_free */
559 PL_perl_destruct_level = i;
36e77d41 560#endif
5f05dabc 561 }
4633a7c4
LW
562 }
563#endif
564
27da23d5 565 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
566 dJMPENV;
567 int x = 0;
568
569 JMPENV_PUSH(x);
1b6737cc 570 PERL_UNUSED_VAR(x);
9ebf26ad 571 if (PL_endav && !PL_minus_c) {
ca7b837b 572 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 573 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 574 }
f3faeb53 575 JMPENV_POP;
26f423df 576 }
f3faeb53 577 LEAVE;
a0d0e21e 578 FREETMPS;
3d22c4f0 579 assert(PL_scopestack_ix == 0);
a0d0e21e 580
e00b64d4 581 /* Need to flush since END blocks can produce output */
f13a2bc0 582 my_fflush_all();
e00b64d4 583
75d476e2
SM
584#ifdef PERL_TRACE_OPS
585 /* If we traced all Perl OP usage, report and clean up */
586 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
587 for (i = 0; i <= OP_max; ++i) {
588 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
589 PL_op_exec_cnt[i] = 0;
590 }
591 /* Utility slot for easily doing little tracing experiments in the runloop: */
592 if (PL_op_exec_cnt[OP_max+1] != 0)
593 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
594 PerlIO_printf(Perl_debug_log, "\n");
595#endif
596
597
16c91539 598 if (PL_threadhook(aTHX)) {
62375a60 599 /* Threads hook has vetoed further cleanup */
c301d606 600 PL_veto_cleanup = TRUE;
37038d91 601 return STATUS_EXIT;
62375a60
NIS
602 }
603
2aa47728
NC
604#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
605 if (destruct_level != 0) {
606 /* Fork here to create a child. Our child's job is to preserve the
607 state of scalars prior to destruction, so that we can instruct it
608 to dump any scalars that we later find have leaked.
609 There's no subtlety in this code - it assumes POSIX, and it doesn't
610 fail gracefully */
611 int fd[2];
612
613 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
614 perror("Debug leaking scalars socketpair failed");
615 abort();
616 }
617
618 child = fork();
619 if(child == -1) {
620 perror("Debug leaking scalars fork failed");
621 abort();
622 }
623 if (!child) {
624 /* We are the child */
3125a5a4
NC
625 const int sock = fd[1];
626 const int debug_fd = PerlIO_fileno(Perl_debug_log);
627 int f;
808ad2d0
NC
628 const char *where;
629 /* Our success message is an integer 0, and a char 0 */
b61433a9 630 static const char success[sizeof(int) + 1] = {0};
3125a5a4 631
2aa47728 632 close(fd[0]);
2aa47728 633
3125a5a4
NC
634 /* We need to close all other file descriptors otherwise we end up
635 with interesting hangs, where the parent closes its end of a
636 pipe, and sits waiting for (another) child to terminate. Only
637 that child never terminates, because it never gets EOF, because
bf357333
NC
638 we also have the far end of the pipe open. We even need to
639 close the debugging fd, because sometimes it happens to be one
640 end of a pipe, and a process is waiting on the other end for
641 EOF. Normally it would be closed at some point earlier in
642 destruction, but if we happen to cause the pipe to remain open,
643 EOF never occurs, and we get an infinite hang. Hence all the
644 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
645
646 f = sysconf(_SC_OPEN_MAX);
647 if(f < 0) {
808ad2d0
NC
648 where = "sysconf failed";
649 goto abort;
3125a5a4
NC
650 }
651 while (f--) {
652 if (f == sock)
653 continue;
3125a5a4
NC
654 close(f);
655 }
656
2aa47728
NC
657 while (1) {
658 SV *target;
bf357333
NC
659 union control_un control;
660 struct msghdr msg;
661 struct iovec vec[1];
662 struct cmsghdr *cmptr;
663 ssize_t got;
664 int got_fd;
665
666 msg.msg_control = control.control;
667 msg.msg_controllen = sizeof(control.control);
668 /* We're a connected socket so we don't need a source */
669 msg.msg_name = NULL;
670 msg.msg_namelen = 0;
671 msg.msg_iov = vec;
c3caa5c3 672 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
673
674 vec[0].iov_base = (void*)&target;
675 vec[0].iov_len = sizeof(target);
676
677 got = recvmsg(sock, &msg, 0);
2aa47728
NC
678
679 if(got == 0)
680 break;
681 if(got < 0) {
808ad2d0
NC
682 where = "recv failed";
683 goto abort;
2aa47728
NC
684 }
685 if(got < sizeof(target)) {
808ad2d0
NC
686 where = "short recv";
687 goto abort;
2aa47728 688 }
bf357333 689
808ad2d0
NC
690 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
691 where = "no cmsg";
692 goto abort;
693 }
694 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
695 where = "wrong cmsg_len";
696 goto abort;
697 }
698 if(cmptr->cmsg_level != SOL_SOCKET) {
699 where = "wrong cmsg_level";
700 goto abort;
701 }
702 if(cmptr->cmsg_type != SCM_RIGHTS) {
703 where = "wrong cmsg_type";
704 goto abort;
705 }
bf357333
NC
706
707 got_fd = *(int*)CMSG_DATA(cmptr);
708 /* For our last little bit of trickery, put the file descriptor
709 back into Perl_debug_log, as if we never actually closed it
710 */
808ad2d0
NC
711 if(got_fd != debug_fd) {
712 if (dup2(got_fd, debug_fd) == -1) {
713 where = "dup2";
714 goto abort;
715 }
716 }
2aa47728 717 sv_dump(target);
bf357333 718
2aa47728
NC
719 PerlIO_flush(Perl_debug_log);
720
808ad2d0 721 got = write(sock, &success, sizeof(success));
2aa47728
NC
722
723 if(got < 0) {
808ad2d0
NC
724 where = "write failed";
725 goto abort;
2aa47728 726 }
808ad2d0
NC
727 if(got < sizeof(success)) {
728 where = "short write";
729 goto abort;
2aa47728
NC
730 }
731 }
732 _exit(0);
808ad2d0
NC
733 abort:
734 {
735 int send_errno = errno;
736 unsigned char length = (unsigned char) strlen(where);
737 struct iovec failure[3] = {
738 {(void*)&send_errno, sizeof(send_errno)},
739 {&length, 1},
740 {(void*)where, length}
741 };
742 int got = writev(sock, failure, 3);
743 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
744 in the parent if we try to read from the socketpair after the
745 child has exited, even if there was data to read.
746 So sleep a bit to give the parent a fighting chance of
747 reading the data. */
748 sleep(2);
749 _exit((got == -1) ? errno : 0);
750 }
bf357333 751 /* End of child. */
2aa47728 752 }
41e4abd8 753 PL_dumper_fd = fd[0];
2aa47728
NC
754 close(fd[1]);
755 }
756#endif
757
ff0cee69
PP
758 /* We must account for everything. */
759
760 /* Destroy the main CV and syntax tree */
37e77c23
FC
761 /* Set PL_curcop now, because destroying ops can cause new SVs
762 to be generated in Perl_pad_swipe, and when running with
763 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
764 op from which the filename structure member is copied. */
17fbfdf6 765 PL_curcop = &PL_compiling;
3280af22 766 if (PL_main_root) {
4e380990
DM
767 /* ensure comppad/curpad to refer to main's pad */
768 if (CvPADLIST(PL_main_cv)) {
769 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 770 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 771 }
3280af22 772 op_free(PL_main_root);
5f66b61c 773 PL_main_root = NULL;
a0d0e21e 774 }
5f66b61c 775 PL_main_start = NULL;
aac9d523
DM
776 /* note that PL_main_cv isn't usually actually freed at this point,
777 * due to the CvOUTSIDE refs from subs compiled within it. It will
778 * get freed once all the subs are freed in sv_clean_all(), for
779 * destruct_level > 0 */
3280af22 780 SvREFCNT_dec(PL_main_cv);
601f1833 781 PL_main_cv = NULL;
ca7b837b 782 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 783
13621cfb
NIS
784 /* Tell PerlIO we are about to tear things apart in case
785 we have layers which are using resources that should
786 be cleaned up now.
787 */
788
789 PerlIO_destruct(aTHX);
790
ddf23d4a
SM
791 /*
792 * Try to destruct global references. We do this first so that the
793 * destructors and destructees still exist. Some sv's might remain.
794 * Non-referenced objects are on their own.
795 */
796 sv_clean_objs();
8990e307 797
5cd24f17 798 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 799 SvREFCNT_dec(PL_warnhook);
a0714e2c 800 PL_warnhook = NULL;
3280af22 801 SvREFCNT_dec(PL_diehook);
a0714e2c 802 PL_diehook = NULL;
5cd24f17 803
4b556e6c 804 /* call exit list functions */
3280af22 805 while (PL_exitlistlen-- > 0)
acfe0abc 806 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 807
3280af22 808 Safefree(PL_exitlist);
4b556e6c 809
1c4916e5
CB
810 PL_exitlist = NULL;
811 PL_exitlistlen = 0;
812
a3e6e81e
NC
813 SvREFCNT_dec(PL_registered_mros);
814
551a8b83 815 /* jettison our possibly duplicated environment */
4b647fb0
DM
816 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
817 * so we certainly shouldn't free it here
818 */
2f42fcb0 819#ifndef PERL_MICRO
4b647fb0 820#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 821 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
822#ifdef USE_ITHREADS
823 /* only main thread can free environ[0] contents */
824 && PL_curinterp == aTHX
825#endif
826 )
827 {
551a8b83
JH
828 I32 i;
829
830 for (i = 0; environ[i]; i++)
4b420006 831 safesysfree(environ[i]);
0631ea03 832
4b420006
JH
833 /* Must use safesysfree() when working with environ. */
834 safesysfree(environ);
551a8b83
JH
835
836 environ = PL_origenviron;
837 }
838#endif
2f42fcb0 839#endif /* !PERL_MICRO */
551a8b83 840
30985c42
JH
841 if (destruct_level == 0) {
842
843 DEBUG_P(debprofdump());
844
845#if defined(PERLIO_LAYERS)
846 /* No more IO - including error messages ! */
847 PerlIO_cleanup(aTHX);
848#endif
849
850 CopFILE_free(&PL_compiling);
30985c42
JH
851
852 /* The exit() function will do everything that needs doing. */
853 return STATUS_EXIT;
854 }
855
9fa9f06b
KW
856 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
857
5f8cb046
DM
858#ifdef USE_ITHREADS
859 /* the syntax tree is shared between clones
860 * so op_free(PL_main_root) only ReREFCNT_dec's
861 * REGEXPs in the parent interpreter
862 * we need to manually ReREFCNT_dec for the clones
863 */
0547a729
DM
864 {
865 I32 i = AvFILLp(PL_regex_padav);
866 SV **ary = AvARRAY(PL_regex_padav);
867
868 for (; i; i--) {
869 SvREFCNT_dec(ary[i]);
870 ary[i] = &PL_sv_undef;
871 }
872 }
5f8cb046
DM
873#endif
874
0547a729 875
ad64d0ec 876 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
877 PL_stashcache = NULL;
878
5f05dabc
PP
879 /* loosen bonds of global variables */
880
2f9285f8
DM
881 /* XXX can PL_parser still be non-null here? */
882 if(PL_parser && PL_parser->rsfp) {
883 (void)PerlIO_close(PL_parser->rsfp);
884 PL_parser->rsfp = NULL;
8ebc5c01
PP
885 }
886
84386e14
RGS
887 if (PL_minus_F) {
888 Safefree(PL_splitstr);
889 PL_splitstr = NULL;
890 }
891
8ebc5c01 892 /* switches */
3280af22
NIS
893 PL_minus_n = FALSE;
894 PL_minus_p = FALSE;
895 PL_minus_l = FALSE;
896 PL_minus_a = FALSE;
897 PL_minus_F = FALSE;
898 PL_doswitches = FALSE;
599cee73 899 PL_dowarn = G_WARN_OFF;
1a904fc8 900#ifdef PERL_SAWAMPERSAND
d3b97530 901 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 902#endif
3280af22
NIS
903 PL_unsafe = FALSE;
904
905 Safefree(PL_inplace);
bd61b366 906 PL_inplace = NULL;
a7cb1f99 907 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
908
909 if (PL_e_script) {
910 SvREFCNT_dec(PL_e_script);
a0714e2c 911 PL_e_script = NULL;
8ebc5c01
PP
912 }
913
bf9cdc68
RG
914 PL_perldb = 0;
915
8ebc5c01
PP
916 /* magical thingies */
917
e23d9e2f
CS
918 SvREFCNT_dec(PL_ofsgv); /* *, */
919 PL_ofsgv = NULL;
5f05dabc 920
7889fe52 921 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 922 PL_ors_sv = NULL;
8ebc5c01 923
3280af22 924 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 925 PL_rs = NULL;
dc92893f 926
d33b2eba 927 Safefree(PL_osname); /* $^O */
bd61b366 928 PL_osname = NULL;
5f05dabc 929
3280af22 930 SvREFCNT_dec(PL_statname);
a0714e2c
SS
931 PL_statname = NULL;
932 PL_statgv = NULL;
5f05dabc 933
8ebc5c01
PP
934 /* defgv, aka *_ should be taken care of elsewhere */
935
7d5ea4e7
GS
936 /* float buffer */
937 Safefree(PL_efloatbuf);
bd61b366 938 PL_efloatbuf = NULL;
7d5ea4e7
GS
939 PL_efloatsize = 0;
940
8ebc5c01 941 /* startup and shutdown function lists */
3280af22 942 SvREFCNT_dec(PL_beginav);
5a837c8f 943 SvREFCNT_dec(PL_beginav_save);
3280af22 944 SvREFCNT_dec(PL_endav);
7d30b5c4 945 SvREFCNT_dec(PL_checkav);
ece599bd 946 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
947 SvREFCNT_dec(PL_unitcheckav);
948 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 949 SvREFCNT_dec(PL_initav);
7d49f689
NC
950 PL_beginav = NULL;
951 PL_beginav_save = NULL;
952 PL_endav = NULL;
953 PL_checkav = NULL;
954 PL_checkav_save = NULL;
3c10abe3
AG
955 PL_unitcheckav = NULL;
956 PL_unitcheckav_save = NULL;
7d49f689 957 PL_initav = NULL;
5618dfe8 958
8ebc5c01 959 /* shortcuts just get cleared */
a0714e2c
SS
960 PL_hintgv = NULL;
961 PL_errgv = NULL;
a0714e2c
SS
962 PL_argvoutgv = NULL;
963 PL_stdingv = NULL;
964 PL_stderrgv = NULL;
965 PL_last_in_gv = NULL;
a0714e2c
SS
966 PL_DBsingle = NULL;
967 PL_DBtrace = NULL;
968 PL_DBsignal = NULL;
a6d69523
TC
969 PL_DBsingle_iv = 0;
970 PL_DBtrace_iv = 0;
971 PL_DBsignal_iv = 0;
601f1833 972 PL_DBcv = NULL;
7d49f689 973 PL_dbargs = NULL;
5c284bb0 974 PL_debstash = NULL;
8ebc5c01 975
cf93a474 976 SvREFCNT_dec(PL_envgv);
f03015cd 977 SvREFCNT_dec(PL_incgv);
722fa0e9 978 SvREFCNT_dec(PL_argvgv);
475b1e90 979 SvREFCNT_dec(PL_replgv);
8cece913
FC
980 SvREFCNT_dec(PL_DBgv);
981 SvREFCNT_dec(PL_DBline);
982 SvREFCNT_dec(PL_DBsub);
cf93a474 983 PL_envgv = NULL;
f03015cd 984 PL_incgv = NULL;
722fa0e9 985 PL_argvgv = NULL;
475b1e90 986 PL_replgv = NULL;
8cece913
FC
987 PL_DBgv = NULL;
988 PL_DBline = NULL;
989 PL_DBsub = NULL;
990
7a1c5554 991 SvREFCNT_dec(PL_argvout_stack);
7d49f689 992 PL_argvout_stack = NULL;
8ebc5c01 993
5c831c24 994 SvREFCNT_dec(PL_modglobal);
5c284bb0 995 PL_modglobal = NULL;
5c831c24 996 SvREFCNT_dec(PL_preambleav);
7d49f689 997 PL_preambleav = NULL;
5c831c24 998 SvREFCNT_dec(PL_subname);
a0714e2c 999 PL_subname = NULL;
ca0c25f6 1000#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1001 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1002 PL_pidstatus = NULL;
ca0c25f6 1003#endif
5c831c24 1004 SvREFCNT_dec(PL_toptarget);
a0714e2c 1005 PL_toptarget = NULL;
5c831c24 1006 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1007 PL_bodytarget = NULL;
1008 PL_formtarget = NULL;
5c831c24 1009
d33b2eba 1010 /* free locale stuff */
b9582b6a 1011#ifdef USE_LOCALE_COLLATE
d33b2eba 1012 Safefree(PL_collation_name);
bd61b366 1013 PL_collation_name = NULL;
b9582b6a 1014#endif
d33b2eba 1015
b9582b6a 1016#ifdef USE_LOCALE_NUMERIC
d33b2eba 1017 Safefree(PL_numeric_name);
bd61b366 1018 PL_numeric_name = NULL;
a453c169 1019 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1020 PL_numeric_radix_sv = NULL;
b9582b6a 1021#endif
d33b2eba 1022
9c0b6888
KW
1023 /* clear character classes */
1024 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1025 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1026 PL_utf8_swash_ptrs[i] = NULL;
1027 }
5c831c24
GS
1028 SvREFCNT_dec(PL_utf8_mark);
1029 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1030 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1031 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1032 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1033 SvREFCNT_dec(PL_utf8_idstart);
1034 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1035 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1036 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1037 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1038 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1039 SvREFCNT_dec(PL_UpperLatin1);
1040 SvREFCNT_dec(PL_Latin1);
1041 SvREFCNT_dec(PL_NonL1NonFinalFold);
1042 SvREFCNT_dec(PL_HasMultiCharFold);
a0714e2c
SS
1043 PL_utf8_mark = NULL;
1044 PL_utf8_toupper = NULL;
1045 PL_utf8_totitle = NULL;
1046 PL_utf8_tolower = NULL;
1047 PL_utf8_tofold = NULL;
1048 PL_utf8_idstart = NULL;
1049 PL_utf8_idcont = NULL;
2726813d 1050 PL_utf8_foldclosures = NULL;
9fa9f06b 1051 PL_AboveLatin1 = NULL;
e0a1ff7a 1052 PL_InBitmap = NULL;
9fa9f06b
KW
1053 PL_HasMultiCharFold = NULL;
1054 PL_Latin1 = NULL;
1055 PL_NonL1NonFinalFold = NULL;
1056 PL_UpperLatin1 = NULL;
86f72d56 1057 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1058 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1059 PL_XPosix_ptrs[i] = NULL;
86f72d56 1060 }
5c831c24 1061
971a9dd3 1062 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1063 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1064 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1065 cophh_free(CopHINTHASH_get(&PL_compiling));
1066 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1067 CopFILE_free(&PL_compiling);
5c831c24 1068
a0d0e21e 1069 /* Prepare to destruct main symbol table. */
5f05dabc 1070
3280af22 1071 hv = PL_defstash;
ca556bcd
DM
1072 /* break ref loop *:: <=> %:: */
1073 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1074 PL_defstash = 0;
a0d0e21e 1075 SvREFCNT_dec(hv);
5c831c24 1076 SvREFCNT_dec(PL_curstname);
a0714e2c 1077 PL_curstname = NULL;
a0d0e21e 1078
5a844595
GS
1079 /* clear queued errors */
1080 SvREFCNT_dec(PL_errors);
a0714e2c 1081 PL_errors = NULL;
5a844595 1082
dd69841b
BB
1083 SvREFCNT_dec(PL_isarev);
1084
a0d0e21e 1085 FREETMPS;
9b387841 1086 if (destruct_level >= 2) {
3280af22 1087 if (PL_scopestack_ix != 0)
9b387841
NC
1088 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1089 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1090 (long)PL_scopestack_ix);
3280af22 1091 if (PL_savestack_ix != 0)
9b387841
NC
1092 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1093 "Unbalanced saves: %ld more saves than restores\n",
1094 (long)PL_savestack_ix);
3280af22 1095 if (PL_tmps_floor != -1)
9b387841
NC
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1097 (long)PL_tmps_floor + 1);
a0d0e21e 1098 if (cxstack_ix != -1)
9b387841
NC
1099 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1100 (long)cxstack_ix + 1);
a0d0e21e 1101 }
8990e307 1102
0547a729
DM
1103#ifdef USE_ITHREADS
1104 SvREFCNT_dec(PL_regex_padav);
1105 PL_regex_padav = NULL;
1106 PL_regex_pad = NULL;
1107#endif
1108
776df701 1109#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1110 /* the entries in this list are allocated via SV PVX's, so get freed
1111 * in sv_clean_all */
1112 Safefree(PL_my_cxt_list);
776df701 1113#endif
57bb2458 1114
8990e307 1115 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1116
1117 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1118 while (sv_clean_all() > 2)
5226ed68
JH
1119 ;
1120
23083432
FC
1121#ifdef USE_ITHREADS
1122 Safefree(PL_stashpad); /* must come after sv_clean_all */
1123#endif
1124
d4777f27
GS
1125 AvREAL_off(PL_fdpid); /* no surviving entries */
1126 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1127 PL_fdpid = NULL;
d33b2eba 1128
6c644e78
GS
1129#ifdef HAVE_INTERP_INTERN
1130 sys_intern_clear();
1131#endif
1132
a38ab475
RZ
1133 /* constant strings */
1134 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1135 SvREFCNT_dec(PL_sv_consts[i]);
1136 PL_sv_consts[i] = NULL;
1137 }
1138
6e72f9df
PP
1139 /* Destruct the global string table. */
1140 {
1141 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1142 * so that sv_free() won't fail on them.
80459961
NC
1143 * Now that the global string table is using a single hunk of memory
1144 * for both HE and HEK, we either need to explicitly unshare it the
1145 * correct way, or actually free things here.
6e72f9df 1146 */
80459961
NC
1147 I32 riter = 0;
1148 const I32 max = HvMAX(PL_strtab);
c4420975 1149 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1150 HE *hent = array[0];
1151
6e72f9df 1152 for (;;) {
0453d815 1153 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1154 HE * const next = HeNEXT(hent);
9014280d 1155 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1156 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1157 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1158 Safefree(hent);
1159 hent = next;
6e72f9df
PP
1160 }
1161 if (!hent) {
1162 if (++riter > max)
1163 break;
1164 hent = array[riter];
1165 }
1166 }
80459961
NC
1167
1168 Safefree(array);
1169 HvARRAY(PL_strtab) = 0;
1170 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1171 }
3280af22 1172 SvREFCNT_dec(PL_strtab);
6e72f9df 1173
e652bb2f 1174#ifdef USE_ITHREADS
c21d1a0f 1175 /* free the pointer tables used for cloning */
a0739874 1176 ptr_table_free(PL_ptr_table);
bf9cdc68 1177 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1178#endif
a0739874 1179
d33b2eba
GS
1180 /* free special SVs */
1181
1182 SvREFCNT(&PL_sv_yes) = 0;
1183 sv_clear(&PL_sv_yes);
1184 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1185 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1186
1187 SvREFCNT(&PL_sv_no) = 0;
1188 sv_clear(&PL_sv_no);
1189 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1190 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1191
9f375a43
DM
1192 {
1193 int i;
1194 for (i=0; i<=2; i++) {
1195 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1196 sv_clear(PERL_DEBUG_PAD(i));
1197 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1198 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1199 }
1200 }
1201
0453d815 1202 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1203 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1204
eba0f806
DM
1205#ifdef DEBUG_LEAKING_SCALARS
1206 if (PL_sv_count != 0) {
1207 SV* sva;
1208 SV* sv;
eb578fdb 1209 SV* svend;
eba0f806 1210
ad64d0ec 1211 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1212 svend = &sva[SvREFCNT(sva)];
1213 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1214 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1215 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1216 " flags=0x%"UVxf
fd0854ff 1217 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1218 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1219 "serial %"UVuf"\n",
574b8821
NC
1220 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1221 pTHX__VALUE,
fd0854ff
DM
1222 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1223 sv->sv_debug_line,
1224 sv->sv_debug_inpad ? "for" : "by",
1225 sv->sv_debug_optype ?
1226 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1227 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1228 sv->sv_debug_serial
fd0854ff 1229 );
2aa47728 1230#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1231 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1232#endif
eba0f806
DM
1233 }
1234 }
1235 }
1236 }
2aa47728
NC
1237#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1238 {
1239 int status;
1240 fd_set rset;
1241 /* Wait for up to 4 seconds for child to terminate.
1242 This seems to be the least effort way of timing out on reaping
1243 its exit status. */
1244 struct timeval waitfor = {4, 0};
41e4abd8 1245 int sock = PL_dumper_fd;
2aa47728
NC
1246
1247 shutdown(sock, 1);
1248 FD_ZERO(&rset);
1249 FD_SET(sock, &rset);
1250 select(sock + 1, &rset, NULL, NULL, &waitfor);
1251 waitpid(child, &status, WNOHANG);
1252 close(sock);
1253 }
1254#endif
eba0f806 1255#endif
77abb4c6
NC
1256#ifdef DEBUG_LEAKING_SCALARS_ABORT
1257 if (PL_sv_count)
1258 abort();
1259#endif
bf9cdc68 1260 PL_sv_count = 0;
eba0f806 1261
56a2bab7 1262#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1263 /* No more IO - including error messages ! */
1264 PerlIO_cleanup(aTHX);
1265#endif
1266
9f4bd222 1267 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1268 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1269 for no arg - and will try and SvREFCNT_dec it.
1270 */
1271 SvREFCNT(&PL_sv_undef) = 0;
1272 SvREADONLY_off(&PL_sv_undef);
1273
3280af22 1274 Safefree(PL_origfilename);
bd61b366 1275 PL_origfilename = NULL;
43c5f42d 1276 Safefree(PL_reg_curpm);
dd28f7bb 1277 free_tied_hv_pool();
3280af22 1278 Safefree(PL_op_mask);
cf36064f 1279 Safefree(PL_psig_name);
bf9cdc68 1280 PL_psig_name = (SV**)NULL;
d525a7b2 1281 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1282 {
1283 /* We need to NULL PL_psig_pend first, so that
1284 signal handlers know not to use it */
1285 int *psig_save = PL_psig_pend;
1286 PL_psig_pend = (int*)NULL;
1287 Safefree(psig_save);
1288 }
6e72f9df 1289 nuke_stacks();
284167a5
SM
1290 TAINTING_set(FALSE);
1291 TAINT_WARN_set(FALSE);
3280af22 1292 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1293 PL_debug = 0;
ac27b0f5 1294
a0d0e21e 1295 DEBUG_P(debprofdump());
d33b2eba 1296
e5dd39fc 1297#ifdef USE_REENTRANT_API
10bc17b6 1298 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1299#endif
1300
612f20c3
GS
1301 sv_free_arenas();
1302
5d9a96ca
DM
1303 while (PL_regmatch_slab) {
1304 regmatch_slab *s = PL_regmatch_slab;
1305 PL_regmatch_slab = PL_regmatch_slab->next;
1306 Safefree(s);
1307 }
1308
fc36a67e
PP
1309 /* As the absolutely last thing, free the non-arena SV for mess() */
1310
3280af22 1311 if (PL_mess_sv) {
f350b448
NC
1312 /* we know that type == SVt_PVMG */
1313
9c63abab 1314 /* it could have accumulated taint magic */
f350b448
NC
1315 MAGIC* mg;
1316 MAGIC* moremagic;
1317 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1318 moremagic = mg->mg_moremagic;
1319 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1320 && mg->mg_len >= 0)
1321 Safefree(mg->mg_ptr);
1322 Safefree(mg);
9c63abab 1323 }
f350b448 1324
fc36a67e 1325 /* we know that type >= SVt_PV */
8bd4d4c5 1326 SvPV_free(PL_mess_sv);
3280af22
NIS
1327 Safefree(SvANY(PL_mess_sv));
1328 Safefree(PL_mess_sv);
a0714e2c 1329 PL_mess_sv = NULL;
fc36a67e 1330 }
37038d91 1331 return STATUS_EXIT;
79072805
LW
1332}
1333
954c1994
GS
1334/*
1335=for apidoc perl_free
1336
1337Releases a Perl interpreter. See L<perlembed>.
1338
1339=cut
1340*/
1341
79072805 1342void
0cb96387 1343perl_free(pTHXx)
79072805 1344{
5174512c
NC
1345 dVAR;
1346
7918f24d
NC
1347 PERL_ARGS_ASSERT_PERL_FREE;
1348
c301d606
DM
1349 if (PL_veto_cleanup)
1350 return;
1351
7cb608b5 1352#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1353 {
1354 /*
1355 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1356 * value as we're probably hunting memory leaks then
1357 */
36e77d41 1358 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1359 const U32 old_debug = PL_debug;
55ef9aae
MHM
1360 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1361 thread at thread exit. */
4fd0a9b8
NC
1362 if (DEBUG_m_TEST) {
1363 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1364 "free this thread's memory\n");
1365 PL_debug &= ~ DEBUG_m_FLAG;
1366 }
55ef9aae 1367 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
a78adc84 1368 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1369 PL_debug = old_debug;
55ef9aae
MHM
1370 }
1371 }
7cb608b5
NC
1372#endif
1373
acfe0abc 1374#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1375# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1376 {
acfe0abc 1377# ifdef NETWARE
7af12a34 1378 void *host = nw_internal_host;
7af12a34 1379 PerlMem_free(aTHXx);
7af12a34 1380 nw_delete_internal_host(host);
acfe0abc 1381# else
bdb50480
NC
1382 void *host = w32_internal_host;
1383 PerlMem_free(aTHXx);
7af12a34 1384 win32_delete_internal_host(host);
acfe0abc 1385# endif
7af12a34 1386 }
1c0ca838
GS
1387# else
1388 PerlMem_free(aTHXx);
1389# endif
acfe0abc
GS
1390#else
1391 PerlMem_free(aTHXx);
76e3520e 1392#endif
79072805
LW
1393}
1394
b7f7fff6 1395#if defined(USE_ITHREADS)
aebd1ac7
GA
1396/* provide destructors to clean up the thread key when libperl is unloaded */
1397#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1398
826955bd 1399#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1400#pragma fini "perl_fini"
666ad1ec
GA
1401#elif defined(__sun) && !defined(__GNUC__)
1402#pragma fini (perl_fini)
aebd1ac7
GA
1403#endif
1404
0dbb1585
AL
1405static void
1406#if defined(__GNUC__)
1407__attribute__((destructor))
aebd1ac7 1408#endif
de009b76 1409perl_fini(void)
aebd1ac7 1410{
27da23d5 1411 dVAR;
5c64bffd
NC
1412 if (
1413#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1414 my_vars &&
1415#endif
1416 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1417 FREE_THREAD_KEY;
1418}
1419
1420#endif /* WIN32 */
1421#endif /* THREADS */
1422
4b556e6c 1423void
864dbfa3 1424Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1425{
3280af22
NIS
1426 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1427 PL_exitlist[PL_exitlistlen].fn = fn;
1428 PL_exitlist[PL_exitlistlen].ptr = ptr;
1429 ++PL_exitlistlen;
4b556e6c
JD
1430}
1431
954c1994
GS
1432/*
1433=for apidoc perl_parse
1434
1435Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1436
1437=cut
1438*/
1439
03d9f026
FC
1440#define SET_CURSTASH(newstash) \
1441 if (PL_curstash != newstash) { \
1442 SvREFCNT_dec(PL_curstash); \
1443 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1444 }
1445
79072805 1446int
0cb96387 1447perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1448{
27da23d5 1449 dVAR;
6224f72b 1450 I32 oldscope;
6224f72b 1451 int ret;
db36c5a1 1452 dJMPENV;
8d063cd8 1453
7918f24d
NC
1454 PERL_ARGS_ASSERT_PERL_PARSE;
1455#ifndef MULTIPLICITY
ed6c66dd 1456 PERL_UNUSED_ARG(my_perl);
7918f24d 1457#endif
7dc86639 1458#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1459 {
7dc86639
YO
1460 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1461
96e440d2 1462 if (s && (grok_atou(s, NULL) == 1)) {
7dc86639
YO
1463 unsigned char *seed= PERL_HASH_SEED;
1464 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1465 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1466 while (seed < seed_end) {
1467 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1468 }
6a5b4183
YO
1469#ifdef PERL_HASH_RANDOMIZE_KEYS
1470 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1471 PL_HASH_RAND_BITS_ENABLED,
1472 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1473#endif
7dc86639
YO
1474 PerlIO_printf(Perl_debug_log, "\n");
1475 }
b0891165
JH
1476 }
1477#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1478 PL_origargc = argc;
e2975953 1479 PL_origargv = argv;
a0d0e21e 1480
a2722ac9
GA
1481 if (PL_origalen != 0) {
1482 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1483 }
1484 else {
3cb9023d
JH
1485 /* Set PL_origalen be the sum of the contiguous argv[]
1486 * elements plus the size of the env in case that it is
e9137a8e 1487 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1488 * as the maximum modifiable length of $0. In the worst case
1489 * the area we are able to modify is limited to the size of
43c32782 1490 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1491 * --jhi */
e1ec3a88 1492 const char *s = NULL;
54bfe034 1493 int i;
b7249aaf 1494 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1495 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1496 const UV aligned =
43c32782
JH
1497 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1498
1499 /* See if all the arguments are contiguous in memory. Note
1500 * that 'contiguous' is a loose term because some platforms
1501 * align the argv[] and the envp[]. If the arguments look
1502 * like non-aligned, assume that they are 'strictly' or
1503 * 'traditionally' contiguous. If the arguments look like
1504 * aligned, we just check that they are within aligned
1505 * PTRSIZE bytes. As long as no system has something bizarre
1506 * like the argv[] interleaved with some other data, we are
1507 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1508 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1509 while (*s) s++;
1510 for (i = 1; i < PL_origargc; i++) {
1511 if ((PL_origargv[i] == s + 1
43c32782 1512#ifdef OS2
c8941eeb 1513 || PL_origargv[i] == s + 2
43c32782 1514#endif
c8941eeb
JH
1515 )
1516 ||
1517 (aligned &&
1518 (PL_origargv[i] > s &&
1519 PL_origargv[i] <=
1520 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1521 )
1522 {
1523 s = PL_origargv[i];
1524 while (*s) s++;
1525 }
1526 else
1527 break;
54bfe034 1528 }
54bfe034 1529 }
a4a109c2
JD
1530
1531#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1532 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1533 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1534 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1535 ||
1536 (aligned &&
1537 (PL_origenviron[0] > s &&
1538 PL_origenviron[0] <=
1539 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1540 )
1541 {
9d419b5f 1542#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1543 s = PL_origenviron[0];
1544 while (*s) s++;
1545#endif
bd61b366 1546 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1547 /* Force copy of environment. */
1548 for (i = 1; PL_origenviron[i]; i++) {
1549 if (PL_origenviron[i] == s + 1
1550 ||
1551 (aligned &&
1552 (PL_origenviron[i] > s &&
1553 PL_origenviron[i] <=
1554 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1555 )
1556 {
1557 s = PL_origenviron[i];
1558 while (*s) s++;
1559 }
1560 else
1561 break;
54bfe034 1562 }
43c32782 1563 }
54bfe034 1564 }
a4a109c2
JD
1565#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1566
2d2af554 1567 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1568 }
1569
3280af22 1570 if (PL_do_undump) {
a0d0e21e
LW
1571
1572 /* Come here if running an undumped a.out. */
1573
3280af22
NIS
1574 PL_origfilename = savepv(argv[0]);
1575 PL_do_undump = FALSE;
a0d0e21e 1576 cxstack_ix = -1; /* start label stack again */
748a9306 1577 init_ids();
284167a5 1578 assert (!TAINT_get);
b7975bdd 1579 TAINT;
e2051532 1580 set_caret_X();
b7975bdd 1581 TAINT_NOT;
a0d0e21e
LW
1582 init_postdump_symbols(argc,argv,env);
1583 return 0;
1584 }
1585
3280af22 1586 if (PL_main_root) {
3280af22 1587 op_free(PL_main_root);
5f66b61c 1588 PL_main_root = NULL;
ff0cee69 1589 }
5f66b61c 1590 PL_main_start = NULL;
3280af22 1591 SvREFCNT_dec(PL_main_cv);
601f1833 1592 PL_main_cv = NULL;
79072805 1593
3280af22
NIS
1594 time(&PL_basetime);
1595 oldscope = PL_scopestack_ix;
599cee73 1596 PL_dowarn = G_WARN_OFF;
f86702cc 1597
14dd3ad8 1598 JMPENV_PUSH(ret);
6224f72b 1599 switch (ret) {
312caa8e 1600 case 0:
14dd3ad8 1601 parse_body(env,xsinit);
9ebf26ad 1602 if (PL_unitcheckav) {
3c10abe3 1603 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1604 }
1605 if (PL_checkav) {
ca7b837b 1606 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1607 call_list(oldscope, PL_checkav);
9ebf26ad 1608 }
14dd3ad8
GS
1609 ret = 0;
1610 break;
6224f72b
GS
1611 case 1:
1612 STATUS_ALL_FAILURE;
924ba076 1613 /* FALLTHROUGH */
6224f72b
GS
1614 case 2:
1615 /* my_exit() was called */
3280af22 1616 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1617 LEAVE;
1618 FREETMPS;
03d9f026 1619 SET_CURSTASH(PL_defstash);
9ebf26ad 1620 if (PL_unitcheckav) {
3c10abe3 1621 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1622 }
1623 if (PL_checkav) {
ca7b837b 1624 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1625 call_list(oldscope, PL_checkav);
9ebf26ad 1626 }
37038d91 1627 ret = STATUS_EXIT;
14dd3ad8 1628 break;
6224f72b 1629 case 3:
bf49b057 1630 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1631 ret = 1;
1632 break;
6224f72b 1633 }
14dd3ad8
GS
1634 JMPENV_POP;
1635 return ret;
1636}
1637
4a5df386
NC
1638/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1639 miniperl, and we need to see those flags reflected in the values here. */
1640
1641/* What this returns is subject to change. Use the public interface in Config.
1642 */
1643static void
1644S_Internals_V(pTHX_ CV *cv)
1645{
1646 dXSARGS;
1647#ifdef LOCAL_PATCH_COUNT
1648 const int local_patch_count = LOCAL_PATCH_COUNT;
1649#else
1650 const int local_patch_count = 0;
1651#endif
2dc296d2 1652 const int entries = 3 + local_patch_count;
4a5df386 1653 int i;
fe1c5936 1654 static const char non_bincompat_options[] =
4a5df386
NC
1655# ifdef DEBUGGING
1656 " DEBUGGING"
1657# endif
1658# ifdef NO_MATHOMS
0d311fbe 1659 " NO_MATHOMS"
4a5df386 1660# endif
59b86f4b
DM
1661# ifdef NO_HASH_SEED
1662 " NO_HASH_SEED"
1663# endif
3b0e4ee2
MB
1664# ifdef NO_TAINT_SUPPORT
1665 " NO_TAINT_SUPPORT"
1666# endif
cb26ef7a
MB
1667# ifdef PERL_BOOL_AS_CHAR
1668 " PERL_BOOL_AS_CHAR"
1669# endif
4a5df386
NC
1670# ifdef PERL_DISABLE_PMC
1671 " PERL_DISABLE_PMC"
1672# endif
1673# ifdef PERL_DONT_CREATE_GVSV
1674 " PERL_DONT_CREATE_GVSV"
1675# endif
9a044a43
NC
1676# ifdef PERL_EXTERNAL_GLOB
1677 " PERL_EXTERNAL_GLOB"
1678# endif
59b86f4b
DM
1679# ifdef PERL_HASH_FUNC_SIPHASH
1680 " PERL_HASH_FUNC_SIPHASH"
1681# endif
1682# ifdef PERL_HASH_FUNC_SDBM
1683 " PERL_HASH_FUNC_SDBM"
1684# endif
1685# ifdef PERL_HASH_FUNC_DJB2
1686 " PERL_HASH_FUNC_DJB2"
1687# endif
1688# ifdef PERL_HASH_FUNC_SUPERFAST
1689 " PERL_HASH_FUNC_SUPERFAST"
1690# endif
1691# ifdef PERL_HASH_FUNC_MURMUR3
1692 " PERL_HASH_FUNC_MURMUR3"
1693# endif
1694# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1695 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1696# endif
1697# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1698 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1699# endif
1700# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1701 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1702# endif
4a5df386
NC
1703# ifdef PERL_IS_MINIPERL
1704 " PERL_IS_MINIPERL"
1705# endif
1706# ifdef PERL_MALLOC_WRAP
1707 " PERL_MALLOC_WRAP"
1708# endif
1709# ifdef PERL_MEM_LOG
1710 " PERL_MEM_LOG"
1711# endif
1712# ifdef PERL_MEM_LOG_NOIMPL
1713 " PERL_MEM_LOG_NOIMPL"
1714# endif
2542212d
DM
1715# ifdef PERL_NEW_COPY_ON_WRITE
1716 " PERL_NEW_COPY_ON_WRITE"
1717# endif
59b86f4b
DM
1718# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1719 " PERL_PERTURB_KEYS_DETERMINISTIC"
1720# endif
1721# ifdef PERL_PERTURB_KEYS_DISABLED
1722 " PERL_PERTURB_KEYS_DISABLED"
1723# endif
1724# ifdef PERL_PERTURB_KEYS_RANDOM
1725 " PERL_PERTURB_KEYS_RANDOM"
1726# endif
c3cf41ec
NC
1727# ifdef PERL_PRESERVE_IVUV
1728 " PERL_PRESERVE_IVUV"
1729# endif
c051e30b
NC
1730# ifdef PERL_RELOCATABLE_INCPUSH
1731 " PERL_RELOCATABLE_INCPUSH"
1732# endif
4a5df386
NC
1733# ifdef PERL_USE_DEVEL
1734 " PERL_USE_DEVEL"
1735# endif
1736# ifdef PERL_USE_SAFE_PUTENV
1737 " PERL_USE_SAFE_PUTENV"
1738# endif
a3749cf3
NC
1739# ifdef UNLINK_ALL_VERSIONS
1740 " UNLINK_ALL_VERSIONS"
1741# endif
de618ee4
NC
1742# ifdef USE_ATTRIBUTES_FOR_PERLIO
1743 " USE_ATTRIBUTES_FOR_PERLIO"
1744# endif
4a5df386
NC
1745# ifdef USE_FAST_STDIO
1746 " USE_FAST_STDIO"
1747# endif
59b86f4b
DM
1748# ifdef USE_HASH_SEED_EXPLICIT
1749 " USE_HASH_SEED_EXPLICIT"
1750# endif
98548bdf
NC
1751# ifdef USE_LOCALE
1752 " USE_LOCALE"
1753# endif
98548bdf
NC
1754# ifdef USE_LOCALE_CTYPE
1755 " USE_LOCALE_CTYPE"
1756# endif
5a8d8935
NC
1757# ifdef USE_PERL_ATOF
1758 " USE_PERL_ATOF"
1759# endif
0d311fbe
NC
1760# ifdef USE_SITECUSTOMIZE
1761 " USE_SITECUSTOMIZE"
1762# endif
4a5df386
NC
1763 ;
1764 PERL_UNUSED_ARG(cv);
1765 PERL_UNUSED_ARG(items);
1766
1767 EXTEND(SP, entries);
1768
1769 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1770 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1771 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1772
1773#ifdef __DATE__
1774# ifdef __TIME__
1775 PUSHs(Perl_newSVpvn_flags(aTHX_
1776 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1777 SVs_TEMP));
1778# else
1779 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1780 SVs_TEMP));
1781# endif
1782#else
1783 PUSHs(&PL_sv_undef);
1784#endif
1785
4a5df386
NC
1786 for (i = 1; i <= local_patch_count; i++) {
1787 /* This will be an undef, if PL_localpatches[i] is NULL. */
1788 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1789 }
1790
1791 XSRETURN(entries);
1792}
1793
be71fc8f
NC
1794#define INCPUSH_UNSHIFT 0x01
1795#define INCPUSH_ADD_OLD_VERS 0x02
1796#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1797#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1798#define INCPUSH_NOT_BASEDIR 0x10
1799#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1800#define INCPUSH_ADD_SUB_DIRS \
1801 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1802
312caa8e 1803STATIC void *
14dd3ad8 1804S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1805{
27da23d5 1806 dVAR;
2f9285f8 1807 PerlIO *rsfp;
312caa8e 1808 int argc = PL_origargc;
8f42b153 1809 char **argv = PL_origargv;
e1ec3a88 1810 const char *scriptname = NULL;
312caa8e 1811 VOL bool dosearch = FALSE;
eb578fdb 1812 char c;
737c24fc 1813 bool doextract = FALSE;
bd61b366 1814 const char *cddir = NULL;
ab019eaa 1815#ifdef USE_SITECUSTOMIZE
20ef40cf 1816 bool minus_f = FALSE;
ab019eaa 1817#endif
95670bde 1818 SV *linestr_sv = NULL;
5486870f 1819 bool add_read_e_script = FALSE;
87606032 1820 U32 lex_start_flags = 0;
009d90df 1821
ca7b837b 1822 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1823
6224f72b 1824 init_main_stash();
54310121 1825
c7030b81
NC
1826 {
1827 const char *s;
6224f72b
GS
1828 for (argc--,argv++; argc > 0; argc--,argv++) {
1829 if (argv[0][0] != '-' || !argv[0][1])
1830 break;
6224f72b
GS
1831 s = argv[0]+1;
1832 reswitch:
47f56822 1833 switch ((c = *s)) {
729a02f2 1834 case 'C':
1d5472a9
GS
1835#ifndef PERL_STRICT_CR
1836 case '\r':
1837#endif
6224f72b
GS
1838 case ' ':
1839 case '0':
1840 case 'F':
1841 case 'a':
1842 case 'c':
1843 case 'd':
1844 case 'D':
1845 case 'h':
1846 case 'i':
1847 case 'l':
1848 case 'M':
1849 case 'm':
1850 case 'n':
1851 case 'p':
1852 case 's':
1853 case 'u':
1854 case 'U':
1855 case 'v':
599cee73
PM
1856 case 'W':
1857 case 'X':
6224f72b 1858 case 'w':
97bd5664 1859 if ((s = moreswitches(s)))
6224f72b
GS
1860 goto reswitch;
1861 break;
33b78306 1862
1dbad523 1863 case 't':
dc6d7f5c 1864#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1865 /* silently ignore */
dc6d7f5c 1866#elif defined(NO_TAINT_SUPPORT)
3231f579 1867 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1868 "Cowardly refusing to run with -t or -T flags");
1869#else
22f7c9c9 1870 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1871 if( !TAINTING_get ) {
1872 TAINT_WARN_set(TRUE);
1873 TAINTING_set(TRUE);
317ea90d 1874 }
284167a5 1875#endif
317ea90d
MS
1876 s++;
1877 goto reswitch;
6224f72b 1878 case 'T':
dc6d7f5c 1879#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1880 /* silently ignore */
dc6d7f5c 1881#elif defined(NO_TAINT_SUPPORT)
3231f579 1882 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1883 "Cowardly refusing to run with -t or -T flags");
1884#else
22f7c9c9 1885 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1886 TAINTING_set(TRUE);
1887 TAINT_WARN_set(FALSE);
1888#endif
6224f72b
GS
1889 s++;
1890 goto reswitch;
f86702cc 1891
bc9b29db
RH
1892 case 'E':
1893 PL_minus_E = TRUE;
924ba076 1894 /* FALLTHROUGH */
6224f72b 1895 case 'e':
f20b2998 1896 forbid_setid('e', FALSE);
3280af22 1897 if (!PL_e_script) {
396482e1 1898 PL_e_script = newSVpvs("");
5486870f 1899 add_read_e_script = TRUE;
6224f72b
GS
1900 }
1901 if (*++s)
3280af22 1902 sv_catpv(PL_e_script, s);
6224f72b 1903 else if (argv[1]) {
3280af22 1904 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1905 argc--,argv++;
1906 }
1907 else
47f56822 1908 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1909 sv_catpvs(PL_e_script, "\n");
6224f72b 1910 break;
afe37c7d 1911
20ef40cf 1912 case 'f':
f5542d3a 1913#ifdef USE_SITECUSTOMIZE
20ef40cf 1914 minus_f = TRUE;
f5542d3a 1915#endif
20ef40cf
GA
1916 s++;
1917 goto reswitch;
1918
6224f72b 1919 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1920 forbid_setid('I', FALSE);
bd61b366 1921 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1922 argc--,argv++;
1923 }
6224f72b 1924 if (s && *s) {
0df16ed7 1925 STRLEN len = strlen(s);
55b4bc1c 1926 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1927 }
1928 else
a67e862a 1929 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1930 break;
6224f72b 1931 case 'S':
f20b2998 1932 forbid_setid('S', FALSE);
6224f72b
GS
1933 dosearch = TRUE;
1934 s++;
1935 goto reswitch;
1936 case 'V':
7edfd0ef
NC
1937 {
1938 SV *opts_prog;
1939
7edfd0ef 1940 if (*++s != ':') {
37ca4a5b 1941 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1942 }
1943 else {
1944 ++s;
1945 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1946 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1947 0, s, 0);
1948 s += strlen(s);
1949 }
37ca4a5b 1950 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1951 /* don't look for script or read stdin */
1952 scriptname = BIT_BUCKET;
1953 goto reswitch;
6224f72b 1954 }
6224f72b 1955 case 'x':
737c24fc 1956 doextract = TRUE;
6224f72b 1957 s++;
304334da 1958 if (*s)
f4c556ac 1959 cddir = s;
6224f72b
GS
1960 break;
1961 case 0:
1962 break;
1963 case '-':
1964 if (!*++s || isSPACE(*s)) {
1965 argc--,argv++;
1966 goto switch_end;
1967 }
ee8bc8b7
NC
1968 /* catch use of gnu style long options.
1969 Both of these exit immediately. */
1970 if (strEQ(s, "version"))
1971 minus_v();
1972 if (strEQ(s, "help"))
1973 usage();
6224f72b 1974 s--;
924ba076 1975 /* FALLTHROUGH */
6224f72b 1976 default:
cea2e8a9 1977 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1978 }
1979 }
c7030b81
NC
1980 }
1981
6224f72b 1982 switch_end:
54310121 1983
c7030b81
NC
1984 {
1985 char *s;
1986
f675dbe5
CB
1987 if (
1988#ifndef SECURE_INTERNAL_GETENV
284167a5 1989 !TAINTING_get &&
f675dbe5 1990#endif
cf756827 1991 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1992 {
74288ac8
GS
1993 while (isSPACE(*s))
1994 s++;
317ea90d 1995 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 1996#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1997 /* silently ignore */
dc6d7f5c 1998#elif defined(NO_TAINT_SUPPORT)
3231f579 1999 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2000 "Cowardly refusing to run with -t or -T flags");
2001#else
22f7c9c9 2002 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2003 TAINTING_set(TRUE);
2004 TAINT_WARN_set(FALSE);
2005#endif
317ea90d 2006 }
74288ac8 2007 else {
bd61b366 2008 char *popt_copy = NULL;
74288ac8 2009 while (s && *s) {
54913509 2010 const char *d;
74288ac8
GS
2011 while (isSPACE(*s))
2012 s++;
2013 if (*s == '-') {
2014 s++;
2015 if (isSPACE(*s))
2016 continue;
2017 }
4ea8f8fb 2018 d = s;
74288ac8
GS
2019 if (!*s)
2020 break;
2b622f1a 2021 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2022 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2023 while (++s && *s) {
2024 if (isSPACE(*s)) {
cf756827 2025 if (!popt_copy) {
bfa6c418
NC
2026 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2027 s = popt_copy + (s - d);
2028 d = popt_copy;
cf756827 2029 }
4ea8f8fb
MS
2030 *s++ = '\0';
2031 break;
2032 }
2033 }
1c4db469 2034 if (*d == 't') {
dc6d7f5c 2035#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2036 /* silently ignore */
dc6d7f5c 2037#elif defined(NO_TAINT_SUPPORT)
3231f579 2038 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2039 "Cowardly refusing to run with -t or -T flags");
2040#else
2041 if( !TAINTING_get) {
2042 TAINT_WARN_set(TRUE);
2043 TAINTING_set(TRUE);
317ea90d 2044 }
284167a5 2045#endif
1c4db469 2046 } else {
97bd5664 2047 moreswitches(d);
1c4db469 2048 }
6224f72b 2049 }
6224f72b
GS
2050 }
2051 }
c7030b81 2052 }
a0d0e21e 2053
c29067d7
CH
2054 /* Set $^X early so that it can be used for relocatable paths in @INC */
2055 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2056 assert (!TAINT_get);
c29067d7 2057 TAINT;
e2051532 2058 set_caret_X();
c29067d7
CH
2059 TAINT_NOT;
2060
43c0c913 2061#if defined(USE_SITECUSTOMIZE)
20ef40cf 2062 if (!minus_f) {
43c0c913 2063 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2064 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2065 ie a q() operator with a NUL byte as a the delimiter. This avoids
2066 problems with pathnames containing (say) ' */
43c0c913
NC
2067# ifdef PERL_IS_MINIPERL
2068 AV *const inc = GvAV(PL_incgv);
2069 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2070
2071 if (inc0) {
15870c5c
NC
2072 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2073 it should be reported immediately as a build failure. */
43c0c913
NC
2074 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2075 Perl_newSVpvf(aTHX_
5de87db5 2076 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2077 "do {local $!; -f $f }"
2078 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2079 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2080 }
2081# else
2082 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2083 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2084 if (raw_sitelib) {
2085 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2086 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2087 INCPUSH_CAN_RELOCATE);
2088 const char *const sitelib = SvPVX(sitelib_sv);
2089 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2090 Perl_newSVpvf(aTHX_
2091 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2092 0, SVfARG(sitelib), 0,
2093 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2094 assert (SvREFCNT(sitelib_sv) == 1);
2095 SvREFCNT_dec(sitelib_sv);
2096 }
43c0c913 2097# endif
20ef40cf
GA
2098 }
2099#endif
2100
6224f72b
GS
2101 if (!scriptname)
2102 scriptname = argv[0];
3280af22 2103 if (PL_e_script) {
6224f72b
GS
2104 argc++,argv--;
2105 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2106 }
bd61b366 2107 else if (scriptname == NULL) {
6224f72b
GS
2108#ifdef MSDOS
2109 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2110 moreswitches("h");
6224f72b
GS
2111#endif
2112 scriptname = "-";
2113 }
2114
284167a5 2115 assert (!TAINT_get);
2cace6ac 2116 init_perllib();
6224f72b 2117
a52eba0e 2118 {
f20b2998 2119 bool suidscript = FALSE;
829372d3 2120
8d113837 2121 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2122 if (!rsfp) {
2123 rsfp = PerlIO_stdin();
87606032 2124 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2125 }
6224f72b 2126
b24bc095 2127 validate_suid(rsfp);
6224f72b 2128
64ca3a65 2129#ifndef PERL_MICRO
a52eba0e
NC
2130# if defined(SIGCHLD) || defined(SIGCLD)
2131 {
2132# ifndef SIGCHLD
2133# define SIGCHLD SIGCLD
2134# endif
2135 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2136 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2137 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2138 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2139 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2140 }
0b5b802d 2141 }
a52eba0e 2142# endif
64ca3a65 2143#endif
0b5b802d 2144
737c24fc 2145 if (doextract) {
faef540c 2146
f20b2998 2147 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2148 setuid scripts. */
2149 forbid_setid('x', suidscript);
f20b2998 2150 /* Hence you can't get here if suidscript is true */
faef540c 2151
95670bde
NC
2152 linestr_sv = newSV_type(SVt_PV);
2153 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2154 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2155 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2156 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2157 }
f4c556ac 2158 }
6224f72b 2159
ea726b52 2160 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2161 CvUNIQUE_on(PL_compcv);
2162
eacbb379 2163 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2164
dd69841b
BB
2165 PL_isarev = newHV();
2166
0c4f7ff0 2167 boot_core_PerlIO();
6224f72b 2168 boot_core_UNIVERSAL();
e1a479c5 2169 boot_core_mro();
4a5df386 2170 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2171
2172 if (xsinit)
acfe0abc 2173 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2174#ifndef PERL_MICRO
739a0b84 2175#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2176 init_os_extras();
6224f72b 2177#endif
64ca3a65 2178#endif
6224f72b 2179
29209bc5 2180#ifdef USE_SOCKS
1b9c9cf5
DH
2181# ifdef HAS_SOCKS5_INIT
2182 socks5_init(argv[0]);
2183# else
29209bc5 2184 SOCKSinit(argv[0]);
1b9c9cf5 2185# endif
ac27b0f5 2186#endif
29209bc5 2187
6224f72b
GS
2188 init_predump_symbols();
2189 /* init_postdump_symbols not currently designed to be called */
2190 /* more than once (ENV isn't cleared first, for example) */
2191 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2192 if (!PL_do_undump)
6224f72b
GS
2193 init_postdump_symbols(argc,argv,env);
2194
27da23d5
JH
2195 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2196 * or explicitly in some platforms.
085a54d9 2197 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2198 * look like the user wants to use UTF-8. */
a0fd4948 2199#if defined(__SYMBIAN32__)
27da23d5
JH
2200 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2201#endif
e27b5b51 2202# ifndef PERL_IS_MINIPERL
06e66572
JH
2203 if (PL_unicode) {
2204 /* Requires init_predump_symbols(). */
a05d7ebb 2205 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2206 IO* io;
2207 PerlIO* fp;
2208 SV* sv;
2209
a05d7ebb 2210 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2211 * and the default open disciplines. */
a05d7ebb
JH
2212 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2213 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2214 (fp = IoIFP(io)))
2215 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2216 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2217 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2218 (fp = IoOFP(io)))
2219 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2220 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2221 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2222 (fp = IoOFP(io)))
2223 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2224 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2225 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2226 SVt_PV)))) {
a05d7ebb
JH
2227 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2228 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2229 if (in) {
2230 if (out)
76f68e9b 2231 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2232 else
76f68e9b 2233 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2234 }
2235 else if (out)
76f68e9b 2236 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2237 SvSETMAGIC(sv);
2238 }
b310b053
JH
2239 }
2240 }
e27b5b51 2241#endif
b310b053 2242
c7030b81
NC
2243 {
2244 const char *s;
4ffa73a3
JH
2245 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2246 if (strEQ(s, "unsafe"))
2247 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2248 else if (strEQ(s, "safe"))
2249 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2250 else
2251 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2252 }
c7030b81 2253 }
4ffa73a3 2254
81d86705 2255
87606032 2256 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2257 SvREFCNT_dec(linestr_sv);
95670bde 2258
219f7226 2259 PL_subname = newSVpvs("main");
6224f72b 2260
5486870f
DM
2261 if (add_read_e_script)
2262 filter_add(read_e_script, NULL);
2263
6224f72b
GS
2264 /* now parse the script */
2265
93189314 2266 SETERRNO(0,SS_NORMAL);
28ac2b49 2267 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2268 if (PL_minus_c)
cea2e8a9 2269 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2270 else {
cea2e8a9 2271 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2272 PL_origfilename);
6224f72b
GS
2273 }
2274 }
57843af0 2275 CopLINE_set(PL_curcop, 0);
03d9f026 2276 SET_CURSTASH(PL_defstash);
3280af22
NIS
2277 if (PL_e_script) {
2278 SvREFCNT_dec(PL_e_script);
a0714e2c 2279 PL_e_script = NULL;
6224f72b
GS
2280 }
2281
3280af22 2282 if (PL_do_undump)
6224f72b
GS
2283 my_unexec();
2284
57843af0
GS
2285 if (isWARN_ONCE) {
2286 SAVECOPFILE(PL_curcop);
2287 SAVECOPLINE(PL_curcop);
3280af22 2288 gv_check(PL_defstash);
57843af0 2289 }
6224f72b
GS
2290
2291 LEAVE;
2292 FREETMPS;
2293
2294#ifdef MYMALLOC
f6a607bc
RGS
2295 {
2296 const char *s;
96e440d2
JH
2297 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && grok_atou(s, NULL) >= 2)
2298 dump_mstats("after compilation:");
f6a607bc 2299 }
6224f72b
GS
2300#endif
2301
2302 ENTER;
febb3a6d 2303 PL_restartjmpenv = NULL;
3280af22 2304 PL_restartop = 0;
312caa8e 2305 return NULL;
6224f72b
GS
2306}
2307
954c1994
GS
2308/*
2309=for apidoc perl_run
2310
2311Tells a Perl interpreter to run. See L<perlembed>.
2312
2313=cut
2314*/
2315
6224f72b 2316int
0cb96387 2317perl_run(pTHXx)
6224f72b 2318{
6224f72b 2319 I32 oldscope;
14dd3ad8 2320 int ret = 0;
db36c5a1 2321 dJMPENV;
6224f72b 2322
7918f24d
NC
2323 PERL_ARGS_ASSERT_PERL_RUN;
2324#ifndef MULTIPLICITY
ed6c66dd 2325 PERL_UNUSED_ARG(my_perl);
7918f24d 2326#endif
9d4ba2ae 2327
3280af22 2328 oldscope = PL_scopestack_ix;
96e176bf
CL
2329#ifdef VMS
2330 VMSISH_HUSHED = 0;
2331#endif
6224f72b 2332
14dd3ad8 2333 JMPENV_PUSH(ret);
6224f72b
GS
2334 switch (ret) {
2335 case 1:
2336 cxstack_ix = -1; /* start context stack again */
312caa8e 2337 goto redo_body;
14dd3ad8 2338 case 0: /* normal completion */
14dd3ad8
GS
2339 redo_body:
2340 run_body(oldscope);
924ba076 2341 /* FALLTHROUGH */
14dd3ad8 2342 case 2: /* my_exit() */
3280af22 2343 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2344 LEAVE;
2345 FREETMPS;
03d9f026 2346 SET_CURSTASH(PL_defstash);
3a1ee7e8 2347 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2348 PL_endav && !PL_minus_c) {
ca7b837b 2349 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2350 call_list(oldscope, PL_endav);
9ebf26ad 2351 }
6224f72b
GS
2352#ifdef MYMALLOC
2353 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2354 dump_mstats("after execution: ");
2355#endif
37038d91 2356 ret = STATUS_EXIT;
14dd3ad8 2357 break;
6224f72b 2358 case 3:
312caa8e
CS
2359 if (PL_restartop) {
2360 POPSTACK_TO(PL_mainstack);
2361 goto redo_body;
6224f72b 2362 }
5637ef5b 2363 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2364 FREETMPS;
14dd3ad8
GS
2365 ret = 1;
2366 break;
6224f72b
GS
2367 }
2368
14dd3ad8
GS
2369 JMPENV_POP;
2370 return ret;
312caa8e
CS
2371}
2372
dd374669 2373STATIC void
14dd3ad8
GS
2374S_run_body(pTHX_ I32 oldscope)
2375{
d3b97530
DM
2376 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2377 PL_sawampersand ? "Enabling" : "Omitting",
2378 (unsigned int)(PL_sawampersand)));
6224f72b 2379
3280af22 2380 if (!PL_restartop) {
cf2782cd 2381#ifdef DEBUGGING
f0e3f042
CS
2382 if (DEBUG_x_TEST || DEBUG_B_TEST)
2383 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2384 if (!DEBUG_q_TEST)
2385 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2386#endif
6224f72b 2387
3280af22 2388 if (PL_minus_c) {
bf49b057 2389 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2390 my_exit(0);
2391 }
3280af22 2392 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2393 PL_DBsingle_iv = 1;
9ebf26ad 2394 if (PL_initav) {
ca7b837b 2395 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2396 call_list(oldscope, PL_initav);
9ebf26ad 2397 }
f1fac472 2398#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2399 if (PL_main_root && PL_main_root->op_slabbed)
2400 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2401#endif
6224f72b
GS
2402 }
2403
2404 /* do it */
2405
ca7b837b 2406 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2407
3280af22 2408 if (PL_restartop) {
febb3a6d 2409 PL_restartjmpenv = NULL;
533c011a 2410 PL_op = PL_restartop;
3280af22 2411 PL_restartop = 0;
cea2e8a9 2412 CALLRUNOPS(aTHX);
6224f72b 2413 }
3280af22
NIS
2414 else if (PL_main_start) {
2415 CvDEPTH(PL_main_cv) = 1;
533c011a 2416 PL_op = PL_main_start;
cea2e8a9 2417 CALLRUNOPS(aTHX);
6224f72b 2418 }
f6b3007c 2419 my_exit(0);
a25b5927 2420 assert(0); /* NOTREACHED */
6224f72b
GS
2421}
2422
954c1994 2423/*
ccfc67b7
JH
2424=head1 SV Manipulation Functions
2425
954c1994
GS
2426=for apidoc p||get_sv
2427
64ace3f8 2428Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2429C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2430Perl variable does not exist then it will be created. If C<flags> is zero
2431and the variable does not exist then NULL is returned.
954c1994
GS
2432
2433=cut
2434*/
2435
6224f72b 2436SV*
64ace3f8 2437Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2438{
2439 GV *gv;
7918f24d
NC
2440
2441 PERL_ARGS_ASSERT_GET_SV;
2442
64ace3f8 2443 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2444 if (gv)
2445 return GvSV(gv);
a0714e2c 2446 return NULL;
6224f72b
GS
2447}
2448
954c1994 2449/*
ccfc67b7
JH
2450=head1 Array Manipulation Functions
2451
954c1994
GS
2452=for apidoc p||get_av
2453
f0b90de1
SF
2454Returns the AV of the specified Perl global or package array with the given
2455name (so it won't work on lexical variables). C<flags> are passed
72d33970 2456to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2457Perl variable does not exist then it will be created. If C<flags> is zero
2458and the variable does not exist then NULL is returned.
954c1994 2459
f0b90de1
SF
2460Perl equivalent: C<@{"$name"}>.
2461
954c1994
GS
2462=cut
2463*/
2464
6224f72b 2465AV*
cbfd0a87 2466Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2467{
cbfd0a87 2468 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2469
2470 PERL_ARGS_ASSERT_GET_AV;
2471
cbfd0a87 2472 if (flags)
6224f72b
GS
2473 return GvAVn(gv);
2474 if (gv)
2475 return GvAV(gv);
7d49f689 2476 return NULL;
6224f72b
GS
2477}
2478
954c1994 2479/*
ccfc67b7
JH
2480=head1 Hash Manipulation Functions
2481
954c1994
GS
2482=for apidoc p||get_hv
2483
6673a63c 2484Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2485C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2486Perl variable does not exist then it will be created. If C<flags> is zero
2487and the variable does not exist then NULL is returned.
954c1994
GS
2488
2489=cut
2490*/
2491
6224f72b 2492HV*
6673a63c 2493Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2494{
6673a63c 2495 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2496
2497 PERL_ARGS_ASSERT_GET_HV;
2498
6673a63c 2499 if (flags)
a0d0e21e
LW
2500 return GvHVn(gv);
2501 if (gv)
2502 return GvHV(gv);
5c284bb0 2503 return NULL;
a0d0e21e
LW
2504}
2505
954c1994 2506/*
ccfc67b7
JH
2507=head1 CV Manipulation Functions
2508
780a5241
NC
2509=for apidoc p||get_cvn_flags
2510
2511Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2512C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2513exist then it will be declared (which has the same effect as saying
2514C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2515then NULL is returned.
2516
954c1994
GS
2517=for apidoc p||get_cv
2518
780a5241 2519Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2520
2521=cut
2522*/
2523
a0d0e21e 2524CV*
780a5241 2525Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2526{
780a5241 2527 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2528
2529 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2530
334dda80
FC
2531 /* XXX this is probably not what they think they're getting.
2532 * It has the same effect as "sub name;", i.e. just a forward
2533 * declaration! */
780a5241 2534 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2535 return newSTUB(gv,0);
780a5241 2536 }
a0d0e21e 2537 if (gv)
8ebc5c01 2538 return GvCVu(gv);
601f1833 2539 return NULL;
a0d0e21e
LW
2540}
2541
2c67934f
NC
2542/* Nothing in core calls this now, but we can't replace it with a macro and
2543 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2544CV*
2545Perl_get_cv(pTHX_ const char *name, I32 flags)
2546{
7918f24d
NC
2547 PERL_ARGS_ASSERT_GET_CV;
2548
780a5241
NC
2549 return get_cvn_flags(name, strlen(name), flags);
2550}
2551
79072805
LW
2552/* Be sure to refetch the stack pointer after calling these routines. */
2553
954c1994 2554/*
ccfc67b7
JH
2555
2556=head1 Callback Functions
2557
954c1994
GS
2558=for apidoc p||call_argv
2559
f0b90de1 2560Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2561with C<argv> (a NULL-terminated array of strings) as arguments. See
2562L<perlcall>.
f0b90de1
SF
2563
2564Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2565
2566=cut
2567*/
2568
a0d0e21e 2569I32
5aaab254 2570Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2571
8ac85365
NIS
2572 /* See G_* flags in cop.h */
2573 /* null terminated arg list */
8990e307 2574{
a0d0e21e 2575 dSP;
8990e307 2576
7918f24d
NC
2577 PERL_ARGS_ASSERT_CALL_ARGV;
2578
924508f0 2579 PUSHMARK(SP);
a0d0e21e 2580 if (argv) {
8990e307 2581 while (*argv) {
6e449a3a 2582 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2583 argv++;
2584 }
a0d0e21e 2585 PUTBACK;
8990e307 2586 }
864dbfa3 2587 return call_pv(sub_name, flags);
8990e307
LW
2588}
2589
954c1994
GS
2590/*
2591=for apidoc p||call_pv
2592
2593Performs a callback to the specified Perl sub. See L<perlcall>.
2594
2595=cut
2596*/
2597
a0d0e21e 2598I32
864dbfa3 2599Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2600 /* name of the subroutine */
2601 /* See G_* flags in cop.h */
a0d0e21e 2602{
7918f24d
NC
2603 PERL_ARGS_ASSERT_CALL_PV;
2604
0da0e728 2605 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2606}
2607
954c1994
GS
2608/*
2609=for apidoc p||call_method
2610
2611Performs a callback to the specified Perl method. The blessed object must
2612be on the stack. See L<perlcall>.
2613
2614=cut
2615*/
2616
a0d0e21e 2617I32
864dbfa3 2618Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2619 /* name of the subroutine */
2620 /* See G_* flags in cop.h */
a0d0e21e 2621{
46ca9bac 2622 STRLEN len;
c106c2be 2623 SV* sv;
7918f24d
NC
2624 PERL_ARGS_ASSERT_CALL_METHOD;
2625
46ca9bac 2626 len = strlen(methname);
c106c2be
RZ
2627 sv = flags & G_METHOD_NAMED
2628 ? sv_2mortal(newSVpvn_share(methname, len,0))
2629 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2630
c106c2be 2631 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2632}
2633
2634/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2635/*
2636=for apidoc p||call_sv
2637
2638Performs a callback to the Perl sub whose name is in the SV. See
2639L<perlcall>.
2640
2641=cut
2642*/
2643
a0d0e21e 2644I32
001d637e 2645Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2646 /* See G_* flags in cop.h */
a0d0e21e 2647{
27da23d5 2648 dVAR; dSP;
a0d0e21e 2649 LOGOP myop; /* fake syntax tree node */
b46e009d 2650 METHOP method_op;
aa689395 2651 I32 oldmark;
8ea43dc8 2652 VOL I32 retval = 0;
a0d0e21e 2653 I32 oldscope;
54310121 2654 bool oldcatch = CATCH_GET;
6224f72b 2655 int ret;
c4420975 2656 OP* const oldop = PL_op;
db36c5a1 2657 dJMPENV;
1e422769 2658
7918f24d
NC
2659 PERL_ARGS_ASSERT_CALL_SV;
2660
a0d0e21e
LW
2661 if (flags & G_DISCARD) {
2662 ENTER;
2663 SAVETMPS;
2664 }
2f8edad0
NC
2665 if (!(flags & G_WANT)) {
2666 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2667 */
2668 flags |= G_SCALAR;
2669 }
a0d0e21e 2670
aa689395 2671 Zero(&myop, 1, LOGOP);
f51d4af5 2672 if (!(flags & G_NOARGS))
aa689395 2673 myop.op_flags |= OPf_STACKED;
4f911530 2674 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2675 SAVEOP();
533c011a 2676 PL_op = (OP*)&myop;
aa689395 2677
3280af22 2678 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2679 if (!(flags & G_METHOD_NAMED))
2680 *++PL_stack_sp = sv;
aa689395 2681 oldmark = TOPMARK;
3280af22 2682 oldscope = PL_scopestack_ix;
a0d0e21e 2683
3280af22 2684 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2685 /* Handle first BEGIN of -d. */
3280af22 2686 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2687 /* Try harder, since this may have been a sighandler, thus
2688 * curstash may be meaningless. */
ea726b52 2689 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2690 && !(flags & G_NODEBUG))
5ff48db8 2691 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2692
c106c2be 2693 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2694 Zero(&method_op, 1, METHOP);
2695 method_op.op_next = (OP*)&myop;
2696 PL_op = (OP*)&method_op;
c106c2be 2697 if ( flags & G_METHOD_NAMED ) {
b46e009d 2698 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2699 method_op.op_type = OP_METHOD_NAMED;
2700 method_op.op_u.op_meth_sv = sv;
c106c2be 2701 } else {
b46e009d 2702 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2703 method_op.op_type = OP_METHOD;
c106c2be
RZ
2704 }
2705 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2706 myop.op_type = OP_ENTERSUB;
968b3946
GS
2707 }
2708
312caa8e 2709 if (!(flags & G_EVAL)) {
0cdb2077 2710 CATCH_SET(TRUE);
d6f07c05 2711 CALL_BODY_SUB((OP*)&myop);
312caa8e 2712 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2713 CATCH_SET(oldcatch);
312caa8e
CS
2714 }
2715 else {
d78bda3d 2716 myop.op_other = (OP*)&myop;
3280af22 2717 PL_markstack_ptr--;
edb2152a 2718 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2719 PL_markstack_ptr++;
a0d0e21e 2720
14dd3ad8 2721 JMPENV_PUSH(ret);
edb2152a 2722
6224f72b
GS
2723 switch (ret) {
2724 case 0:
14dd3ad8 2725 redo_body:
d6f07c05 2726 CALL_BODY_SUB((OP*)&myop);
312caa8e 2727 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2728 if (!(flags & G_KEEPERR)) {
ab69dbc2 2729 CLEAR_ERRSV();
8433848b 2730 }
a0d0e21e 2731 break;
6224f72b 2732 case 1:
f86702cc 2733 STATUS_ALL_FAILURE;
924ba076 2734 /* FALLTHROUGH */
6224f72b 2735 case 2:
a0d0e21e 2736 /* my_exit() was called */
03d9f026 2737 SET_CURSTASH(PL_defstash);
a0d0e21e 2738 FREETMPS;
14dd3ad8 2739 JMPENV_POP;
f86702cc 2740 my_exit_jump();
a25b5927 2741 assert(0); /* NOTREACHED */
6224f72b 2742 case 3:
3280af22 2743 if (PL_restartop) {
febb3a6d 2744 PL_restartjmpenv = NULL;
533c011a 2745 PL_op = PL_restartop;
3280af22 2746 PL_restartop = 0;
312caa8e 2747 goto redo_body;
a0d0e21e 2748 }
3280af22 2749 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2750 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2751 retval = 0;
2752 else {
2753 retval = 1;
3280af22 2754 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2755 }
312caa8e 2756 break;
a0d0e21e 2757 }
a0d0e21e 2758
edb2152a
NC
2759 if (PL_scopestack_ix > oldscope)
2760 delete_eval_scope();
14dd3ad8 2761 JMPENV_POP;
a0d0e21e 2762 }
1e422769 2763
a0d0e21e 2764 if (flags & G_DISCARD) {
3280af22 2765 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2766 retval = 0;
2767 FREETMPS;
2768 LEAVE;
2769 }
533c011a 2770 PL_op = oldop;
a0d0e21e
LW
2771 return retval;
2772}
2773
6e72f9df 2774/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2775
954c1994
GS
2776/*
2777=for apidoc p||eval_sv
2778
72d33970
FC
2779Tells Perl to C<eval> the string in the SV. It supports the same flags
2780as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2781
2782=cut
2783*/
2784
a0d0e21e 2785I32
864dbfa3 2786Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2787
8ac85365 2788 /* See G_* flags in cop.h */
a0d0e21e 2789{
97aff369 2790 dVAR;
924508f0 2791 dSP;
a0d0e21e 2792 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2793 VOL I32 oldmark = SP - PL_stack_base;
2794 VOL I32 retval = 0;
6224f72b 2795 int ret;
c4420975 2796 OP* const oldop = PL_op;
db36c5a1 2797 dJMPENV;
84902520 2798
7918f24d
NC
2799 PERL_ARGS_ASSERT_EVAL_SV;
2800
4633a7c4
LW
2801 if (flags & G_DISCARD) {
2802 ENTER;
2803 SAVETMPS;
2804 }
2805
462e5cf6 2806 SAVEOP();
533c011a 2807 PL_op = (OP*)&myop;
5ff48db8 2808 Zero(&myop, 1, UNOP);
3280af22
NIS
2809 EXTEND(PL_stack_sp, 1);
2810 *++PL_stack_sp = sv;
79072805 2811
4633a7c4
LW
2812 if (!(flags & G_NOARGS))
2813 myop.op_flags = OPf_STACKED;
6e72f9df 2814 myop.op_type = OP_ENTEREVAL;
4f911530 2815 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2816 if (flags & G_KEEPERR)
2817 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2818
2819 if (flags & G_RE_REPARSING)
2820 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2821
dedbcade
DM
2822 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2823 * before a PUSHEVAL, which corrupts the stack after a croak */
2824 TAINT_PROPER("eval_sv()");
2825
14dd3ad8 2826 JMPENV_PUSH(ret);
6224f72b
GS
2827 switch (ret) {
2828 case 0:
14dd3ad8 2829 redo_body:
2ba65d5f
DM
2830 if (PL_op == (OP*)(&myop)) {
2831 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2832 if (!PL_op)
2833 goto fail; /* failed in compilation */
2834 }
4aca2f62 2835 CALLRUNOPS(aTHX);
312caa8e 2836 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2837 if (!(flags & G_KEEPERR)) {
ab69dbc2 2838 CLEAR_ERRSV();
8433848b 2839 }
4633a7c4 2840 break;
6224f72b 2841 case 1:
f86702cc 2842 STATUS_ALL_FAILURE;
924ba076 2843 /* FALLTHROUGH */
6224f72b 2844 case 2:
4633a7c4 2845 /* my_exit() was called */
03d9f026 2846 SET_CURSTASH(PL_defstash);
4633a7c4 2847 FREETMPS;
14dd3ad8 2848 JMPENV_POP;
f86702cc 2849 my_exit_jump();
a25b5927 2850 assert(0); /* NOTREACHED */
6224f72b 2851 case 3:
3280af22 2852 if (PL_restartop) {
febb3a6d 2853 PL_restartjmpenv = NULL;
533c011a 2854 PL_op = PL_restartop;
3280af22 2855 PL_restartop = 0;
312caa8e 2856 goto redo_body;
4633a7c4 2857 }
4aca2f62 2858 fail:
3280af22 2859 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2860 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2861 retval = 0;
2862 else {
2863 retval = 1;
3280af22 2864 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2865 }
312caa8e 2866 break;
4633a7c4
LW
2867 }
2868
14dd3ad8 2869 JMPENV_POP;
4633a7c4 2870 if (flags & G_DISCARD) {
3280af22 2871 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2872 retval = 0;
2873 FREETMPS;
2874 LEAVE;
2875 }
533c011a 2876 PL_op = oldop;
4633a7c4
LW
2877 return retval;
2878}
2879
954c1994
GS
2880/*
2881=for apidoc p||eval_pv
2882
422791e4 2883Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2884
2885=cut
2886*/
2887
137443ea 2888SV*
864dbfa3 2889Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2890{
137443ea
PP
2891 SV* sv = newSVpv(p, 0);
2892
7918f24d
NC
2893 PERL_ARGS_ASSERT_EVAL_PV;
2894
864dbfa3 2895 eval_sv(sv, G_SCALAR);
137443ea
PP
2896 SvREFCNT_dec(sv);
2897
ed1786ad
DD
2898 {
2899 dSP;
2900 sv = POPs;
2901 PUTBACK;
2902 }
137443ea 2903
eed484f9
DD
2904 /* just check empty string or undef? */
2905 if (croak_on_error) {
2906 SV * const errsv = ERRSV;
2907 if(SvTRUE_NN(errsv))
2908 /* replace with croak_sv? */
2909 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2910 }
137443ea
PP
2911
2912 return sv;
2913}
2914
4633a7c4
LW
2915/* Require a module. */
2916
954c1994 2917/*
ccfc67b7
JH
2918=head1 Embedding Functions
2919
954c1994
GS
2920=for apidoc p||require_pv
2921
7d3fb230
BS
2922Tells Perl to C<require> the file named by the string argument. It is
2923analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2924implemented that way; consider using load_module instead.
954c1994 2925
7d3fb230 2926=cut */
954c1994 2927
4633a7c4 2928void
864dbfa3 2929Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2930{
d3acc0f7 2931 dSP;
97aff369 2932 SV* sv;
7918f24d
NC
2933
2934 PERL_ARGS_ASSERT_REQUIRE_PV;
2935
e788e7d3 2936 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2937 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2938 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2939 POPSTACK;
79072805
LW
2940}
2941
76e3520e 2942STATIC void
b6f82619 2943S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2944{
ab821d7f 2945 /* This message really ought to be max 23 lines.
75c72d73 2946 * Removed -h because the user already knows that option. Others? */
fb73857a 2947
1566c39d
NC
2948 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2949 minimum of 509 character string literals. */
27da23d5 2950 static const char * const usage_msg[] = {
1566c39d
NC
2951" -0[octal] specify record separator (\\0, if no argument)\n"
2952" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2953" -C[number/list] enables the listed Unicode features\n"
2954" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2955" -d[:debugger] run program under debugger\n"
2956" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2957" -e program one line of program (several -e's allowed, omit programfile)\n"
2958" -E program like -e, but enables all optional features\n"
2959" -f don't do $sitelib/sitecustomize.pl at startup\n"
2960" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2961" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2962" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2963" -l[octal] enable line ending processing, specifies line terminator\n"
2964" -[mM][-]module execute \"use/no module...\" before executing program\n"
2965" -n assume \"while (<>) { ... }\" loop around program\n"
2966" -p assume loop like -n but print line also, like sed\n"
2967" -s enable rudimentary parsing for switches after programfile\n"
2968" -S look for programfile using PATH environment variable\n",
2969" -t enable tainting warnings\n"
2970" -T enable tainting checks\n"
2971" -u dump core after parsing program\n"
2972" -U allow unsafe operations\n"
2973" -v print version, patchlevel and license\n"
2974" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2975" -w enable many useful warnings\n"
1566c39d
NC
2976" -W enable all warnings\n"
2977" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2978" -X disable all warnings\n"
2979" \n"
2980"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2981NULL
2982};
27da23d5 2983 const char * const *p = usage_msg;
1566c39d 2984 PerlIO *out = PerlIO_stdout();
fb73857a 2985
1566c39d
NC
2986 PerlIO_printf(out,
2987 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2988 PL_origargv[0]);
fb73857a 2989 while (*p)
1566c39d 2990 PerlIO_puts(out, *p++);
b6f82619 2991 my_exit(0);
4633a7c4
LW
2992}
2993
b4ab917c
DM
2994/* convert a string of -D options (or digits) into an int.
2995 * sets *s to point to the char after the options */
2996
2997#ifdef DEBUGGING
2998int
e1ec3a88 2999Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3000{
27da23d5 3001 static const char * const usage_msgd[] = {
651b8f1a
NC
3002 " Debugging flag values: (see also -d)\n"
3003 " p Tokenizing and parsing (with v, displays parse stack)\n"
3004 " s Stack snapshots (with v, displays all stacks)\n"
3005 " l Context (loop) stack processing\n"
3006 " t Trace execution\n"
3007 " o Method and overloading resolution\n",
3008 " c String/numeric conversions\n"
3009 " P Print profiling info, source file input state\n"
3010 " m Memory and SV allocation\n"
3011 " f Format processing\n"
3012 " r Regular expression parsing and execution\n"
3013 " x Syntax tree dump\n",
3014 " u Tainting checks\n"
3015 " H Hash dump -- usurps values()\n"
3016 " X Scratchpad allocation\n"
3017 " D Cleaning up\n"
56967202 3018 " S Op slab allocation\n"
651b8f1a
NC
3019 " T Tokenising\n"
3020 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3021 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3022 " v Verbose: use in conjunction with other flags\n"
3023 " C Copy On Write\n"
3024 " A Consistency checks on internal structures\n"
3025 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3026 " M trace smart match resolution\n"
3027 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3028 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3029 NULL
3030 };
b4ab917c 3031 int i = 0;
7918f24d
NC
3032
3033 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3034
b4ab917c
DM
3035 if (isALPHA(**s)) {
3036 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3037 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3038
0eb30aeb 3039 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3040 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3041 if (d)
3042 i |= 1 << (d - debopts);
3043 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3044 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3045 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3046 }
3047 }
e6e64d9b 3048 else if (isDIGIT(**s)) {
96e440d2
JH
3049 const char* e;
3050 i = grok_atou(*s, &e);
3051 if (e)
3052 *s = e;
0eb30aeb 3053 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3054 }
ddcf8bc1 3055 else if (givehelp) {
06e869a4 3056 const char *const *p = usage_msgd;
651b8f1a 3057 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3058 }
b4ab917c
DM
3059# ifdef EBCDIC
3060 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3061 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3062 "-Dp not implemented on this platform\n");
3063# endif
3064 return i;
3065}
3066#endif
3067
79072805
LW
3068/* This routine handles any switches that can be given during run */
3069
c7030b81
NC
3070const char *
3071Perl_moreswitches(pTHX_ const char *s)
79072805 3072{
27da23d5 3073 dVAR;
84c133a0 3074 UV rschar;
0544e6df 3075 const char option = *s; /* used to remember option in -m/-M code */
79072805 3076
7918f24d
NC
3077 PERL_ARGS_ASSERT_MORESWITCHES;
3078
79072805
LW
3079 switch (*s) {
3080 case '0':
a863c7d1 3081 {
f2095865 3082 I32 flags = 0;
a3b680e6 3083 STRLEN numlen;
f2095865
JH
3084
3085 SvREFCNT_dec(PL_rs);
3086 if (s[1] == 'x' && s[2]) {
a3b680e6 3087 const char *e = s+=2;
f2095865
JH
3088 U8 *tmps;
3089
a3b680e6
AL
3090 while (*e)
3091 e++;
f2095865
JH
3092 numlen = e - s;
3093 flags = PERL_SCAN_SILENT_ILLDIGIT;
3094 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3095 if (s + numlen < e) {
3096 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3097 numlen = 0;
3098 s--;
3099 }
396482e1 3100 PL_rs = newSVpvs("");
c5661c80 3101 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3102 tmps = (U8*)SvPVX(PL_rs);
3103 uvchr_to_utf8(tmps, rschar);
3104 SvCUR_set(PL_rs, UNISKIP(rschar));
3105 SvUTF8_on(PL_rs);
3106 }
3107 else {
3108 numlen = 4;
3109 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3110 if (rschar & ~((U8)~0))
3111 PL_rs = &PL_sv_undef;
3112 else if (!rschar && numlen >= 2)
396482e1 3113 PL_rs = newSVpvs("");
f2095865
JH
3114 else {
3115 char ch = (char)rschar;
3116 PL_rs = newSVpvn(&ch, 1);
3117 }
3118 }
64ace3f8 3119 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3120 return s + numlen;
a863c7d1 3121 }
46487f74 3122 case 'C':
a05d7ebb 3123 s++;
dd374669 3124 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3125 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3126 PL_utf8cache = -1;
46487f74 3127 return s;
2304df62 3128 case 'F':
5fc691f1 3129 PL_minus_a = TRUE;
3280af22 3130 PL_minus_F = TRUE;
24ffa309 3131 PL_minus_n = TRUE;
ebce5377
RGS
3132 PL_splitstr = ++s;
3133 while (*s && !isSPACE(*s)) ++s;
e49e380e 3134 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3135 return s;
79072805 3136 case 'a':
3280af22 3137 PL_minus_a = TRUE;
24ffa309 3138 PL_minus_n = TRUE;
79072805
LW
3139 s++;
3140 return s;
3141 case 'c':
3280af22 3142 PL_minus_c = TRUE;
79072805
LW
3143 s++;
3144 return s;
3145 case 'd':
f20b2998 3146 forbid_setid('d', FALSE);
4633a7c4 3147 s++;
2cbb2ee1
RGS
3148
3149 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3150 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3151 ++s;
3152 my_setenv("PERL5DB_THREADED", "1");
3153 }
3154
70c94a19
RR
3155 /* The following permits -d:Mod to accepts arguments following an =
3156 in the fashion that -MSome::Mod does. */
3157 if (*s == ':' || *s == '=') {
b19934fb
NC
3158 const char *start;
3159 const char *end;
3160 SV *sv;
3161
3162 if (*++s == '-') {
3163 ++s;
3164 sv = newSVpvs("no Devel::");
3165 } else {
3166 sv = newSVpvs("use Devel::");
3167 }
3168
3169 start = s;
3170 end = s + strlen(s);
f85893a1 3171
b19934fb 3172 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3173 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3174 if (*s != '=')
f85893a1 3175 sv_catpvn(sv, start, end - start);
70c94a19
RR
3176 else {
3177 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3178 /* Don't use NUL as q// delimiter here, this string goes in the
3179 * environment. */
3180 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3181 }
f85893a1 3182 s = end;
184f32ec 3183 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3184 SvREFCNT_dec(sv);
4633a7c4 3185 }
ed094faf 3186 if (!PL_perldb) {
3280af22 3187 PL_perldb = PERLDB_ALL;
a0d0e21e 3188 init_debugger();
ed094faf 3189 }
79072805
LW
3190 return s;
3191 case 'D':
0453d815 3192 {
79072805 3193#ifdef DEBUGGING
f20b2998 3194 forbid_setid('D', FALSE);
b4ab917c 3195 s++;
dd374669 3196 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3197#else /* !DEBUGGING */
0453d815 3198 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3199 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3200 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3201 for (s++; isWORDCHAR(*s); s++) ;
79072805 3202#endif
79072805 3203 return s;
0453d815 3204 }
4633a7c4 3205 case 'h':
b6f82619 3206 usage();
79072805 3207 case 'i':
43c5f42d 3208 Safefree(PL_inplace);
c030f24b
GH
3209#if defined(__CYGWIN__) /* do backup extension automagically */
3210 if (*(s+1) == '\0') {
c86a4f2e 3211 PL_inplace = savepvs(".bak");
c030f24b
GH
3212 return s+1;
3213 }
3214#endif /* __CYGWIN__ */
5ef5d758 3215 {
d4c19fe8 3216 const char * const start = ++s;
5ef5d758
NC
3217 while (*s && !isSPACE(*s))
3218 ++s;
3219
3220 PL_inplace = savepvn(start, s - start);
3221 }
7b8d334a 3222 if (*s) {
5ef5d758 3223 ++s;
7b8d334a 3224 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3225 s++;
7b8d334a 3226 }
fb73857a 3227 return s;
4e49a025 3228 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3229 forbid_setid('I', FALSE);
fb73857a
PP
3230 ++s;
3231 while (*s && isSPACE(*s))
3232 ++s;
3233 if (*s) {
c7030b81 3234 const char *e, *p;
0df16ed7
GS
3235 p = s;
3236 /* ignore trailing spaces (possibly followed by other switches) */
3237 do {
3238 for (e = p; *e && !isSPACE(*e); e++) ;
3239 p = e;
3240 while (isSPACE(*p))
3241 p++;
3242 } while (*p && *p != '-');
55b4bc1c 3243 incpush(s, e-s,
e28f3139 3244 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3245 s = p;
3246 if (*s == '-')
3247 s++;
79072805
LW
3248 }
3249 else
a67e862a 3250 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3251 return s;
79072805 3252 case 'l':
3280af22 3253 PL_minus_l = TRUE;
79072805 3254 s++;
7889fe52
NIS
3255 if (PL_ors_sv) {
3256 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3257 PL_ors_sv = NULL;
7889fe52 3258 }
79072805 3259 if (isDIGIT(*s)) {
53305cf1 3260 I32 flags = 0;
a3b680e6 3261 STRLEN numlen;
396482e1 3262 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3263 numlen = 3 + (*s == '0');
3264 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3265 s += numlen;
3266 }
3267 else {
8bfdd7d9 3268 if (RsPARA(PL_rs)) {
396482e1 3269 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3270 }
3271 else {
8bfdd7d9 3272 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3273 }
79072805
LW
3274 }
3275 return s;
1a30305b 3276 case 'M':
f20b2998 3277 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3278 /* FALLTHROUGH */
1a30305b 3279 case 'm':
f20b2998 3280 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3281 if (*++s) {
c7030b81 3282 const char *start;
b64cb68c 3283 const char *end;
11343788 3284 SV *sv;
e1ec3a88 3285 const char *use = "use ";
0544e6df 3286 bool colon = FALSE;
a5f75d66 3287 /* -M-foo == 'no foo' */
d0043bd1
NC
3288 /* Leading space on " no " is deliberate, to make both
3289 possibilities the same length. */
3290 if (*s == '-') { use = " no "; ++s; }
3291 sv = newSVpvn(use,4);
a5f75d66 3292 start = s;
1a30305b 3293 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3294 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3295 if( *s++ == ':' ) {
3296 if( *s == ':' )
3297 s++;
3298 else
3299 colon = TRUE;
3300 }
3301 }
3302 if (s == start)
3303 Perl_croak(aTHX_ "Module name required with -%c option",
3304 option);
3305 if (colon)
3306 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3307 "contains single ':'",
63da6837 3308 (int)(s - start), start, option);
b64cb68c 3309 end = s + strlen(s);
c07a80fd 3310 if (*s != '=') {
b64cb68c 3311 sv_catpvn(sv, start, end - start);
0544e6df 3312 if (option == 'm') {
c07a80fd 3313 if (*s != '\0')
cea2e8a9 3314 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3315 sv_catpvs( sv, " ()");
c07a80fd
PP
3316 }
3317 } else {
11343788 3318 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3319 /* Use NUL as q''-delimiter. */
3320 sv_catpvs(sv, " split(/,/,q\0");
3321 ++s;
3322 sv_catpvn(sv, s, end - s);
396482e1 3323 sv_catpvs(sv, "\0)");
c07a80fd 3324 }
b64cb68c 3325 s = end;
29a861e7 3326 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3327 }
3328 else
0544e6df 3329 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3330 return s;
79072805 3331 case 'n':
3280af22 3332 PL_minus_n = TRUE;
79072805
LW
3333 s++;
3334 return s;
3335 case 'p':
3280af22 3336 PL_minus_p = TRUE;
79072805
LW
3337 s++;
3338 return s;
3339 case 's':
f20b2998 3340 forbid_setid('s', FALSE);
3280af22 3341 PL_doswitches = TRUE;
79072805
LW
3342 s++;
3343 return s;
6537fe72 3344 case 't':
27a6968b 3345 case 'T':
dc6d7f5c 3346#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3347 /* silently ignore */
dc6d7f5c 3348#elif defined(NO_TAINT_SUPPORT)
3231f579 3349 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3350 "Cowardly refusing to run with -t or -T flags");
3351#else
3352 if (!TAINTING_get)
27a6968b 3353 TOO_LATE_FOR(*s);
284167a5 3354#endif
6537fe72 3355 s++;
463ee0b2 3356 return s;
79072805 3357 case 'u':
3280af22 3358 PL_do_undump = TRUE;
79072805
LW
3359 s++;
3360 return s;
3361 case 'U':
3280af22 3362 PL_unsafe = TRUE;
79072805
LW
3363 s++;
3364 return s;
3365 case 'v':
c4bc78d9
NC
3366 minus_v();
3367 case 'w':
3368 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3369 PL_dowarn |= G_WARN_ON;
3370 }
3371 s++;
3372 return s;
3373 case 'W':
3374 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3375 if (!specialWARN(PL_compiling.cop_warnings))
3376 PerlMemShared_free(PL_compiling.cop_warnings);
3377 PL_compiling.cop_warnings = pWARN_ALL ;
3378 s++;
3379 return s;
3380 case 'X':
3381 PL_dowarn = G_WARN_ALL_OFF;
3382 if (!specialWARN(PL_compiling.cop_warnings))
3383 PerlMemShared_free(PL_compiling.cop_warnings);
3384 PL_compiling.cop_warnings = pWARN_NONE ;
3385 s++;
3386 return s;
3387 case '*':
3388 case ' ':
3389 while( *s == ' ' )
3390 ++s;
3391 if (s[0] == '-') /* Additional switches on #! line. */
3392 return s+1;
3393 break;
3394 case '-':
3395 case 0:
3396#if defined(WIN32) || !defined(PERL_STRICT_CR)
3397 case '\r':
3398#endif
3399 case '\n':
3400 case '\t':
3401 break;
3402#ifdef ALTERNATE_SHEBANG
3403 case 'S': /* OS/2 needs -S on "extproc" line. */
3404 break;
3405#endif
4bb78d63
CB
3406 case 'e': case 'f': case 'x': case 'E':
3407#ifndef ALTERNATE_SHEBANG
3408 case 'S':
3409#endif
3410 case 'V':
c4bc78d9 3411 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3412 default:
3413 Perl_croak(aTHX_
3414 "Unrecognized switch: -%.1s (-h will show valid options)",s
3415 );
c4bc78d9
NC
3416 }
3417 return NULL;
3418}
3419
3420
3421STATIC void
3422S_minus_v(pTHX)
3423{
fc3381af 3424 PerlIO * PIO_stdout;
46807d8e 3425 {
709aee94
DD
3426 const char * const level_str = "v" PERL_VERSION_STRING;
3427 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3428#ifdef PERL_PATCHNUM
709aee94 3429 SV* level;
23d483e2 3430# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3431 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3432# else
709aee94 3433 static const char num [] = PERL_PATCHNUM;
23d483e2 3434# endif
fc3381af 3435 {
709aee94
DD
3436 const STRLEN num_len = sizeof(num)-1;
3437 /* A very advanced compiler would fold away the strnEQ
3438 and this whole conditional, but most (all?) won't do it.
3439 SV level could also be replaced by with preprocessor
3440 catenation.
3441 */
3442 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3443 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3444 of the interp so it might contain format characters
3445 */
3446 level = newSVpvn(num, num_len);
fc3381af 3447 } else {
709aee94 3448 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3449 }
46807d8e 3450 }
709aee94
DD
3451#else
3452 SV* level = newSVpvn(level_str, level_len);
3453#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3454 PIO_stdout = PerlIO_stdout();
3455 PerlIO_printf(PIO_stdout,
ded326e4
DG
3456 "\nThis is perl " STRINGIFY(PERL_REVISION)
3457 ", version " STRINGIFY(PERL_VERSION)
3458 ", subversion " STRINGIFY(PERL_SUBVERSION)
c1f6cd39 3459 " (%"SVf") built for " ARCHNAME, SVfARG(level)
ded326e4 3460 );
709aee94 3461 SvREFCNT_dec_NN(level);
46807d8e 3462 }
fb73857a
PP
3463#if defined(LOCAL_PATCH_COUNT)
3464 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3465 PerlIO_printf(PIO_stdout,
b0e47665
GS
3466 "\n(with %d registered patch%s, "
3467 "see perl -V for more detail)",
bb7a0f54 3468 LOCAL_PATCH_COUNT,
b0e47665 3469 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3470#endif
1a30305b 3471
fc3381af 3472 PerlIO_printf(PIO_stdout,
fb435042 3473 "\n\nCopyright 1987-2014, Larry Wall\n");
79072805 3474#ifdef MSDOS
fc3381af 3475 PerlIO_printf(PIO_stdout,
b0e47665 3476 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3477#endif
3478#ifdef DJGPP
fc3381af 3479 PerlIO_printf(PIO_stdout,
b0e47665
GS
3480 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3481 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3482#endif
79072805 3483#ifdef OS2
fc3381af 3484 PerlIO_printf(PIO_stdout,
b0e47665 3485 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3486