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4b88f280 1#line 2 "perl.c"
a0d0e21e
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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);
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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
d0820ef1 140Perl_sys_term()
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
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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
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176 return my_perl;
177}
178#else
954c1994
GS
179
180/*
ccfc67b7
JH
181=head1 Embedding Functions
182
954c1994
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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
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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
0631ea03
AB
309#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
310 _dyld_lookup_and_bind
311 ("__environ", (unsigned long *) &environ_pointer, NULL);
312#endif /* environ */
313
2f42fcb0
JH
314#ifndef PERL_MICRO
315# ifdef USE_ENVIRON_ARRAY
0631ea03 316 PL_origenviron = environ;
2f42fcb0 317# endif
0631ea03
AB
318#endif
319
5311654c 320 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 321 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
322 * The HZ if not originally defined has been by now
323 * been defined as CLK_TCK, if available. */
b6c36746 324#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
325 PL_clocktick = sysconf(_SC_CLK_TCK);
326 if (PL_clocktick <= 0)
327#endif
328 PL_clocktick = HZ;
329
081fc587
AB
330 PL_stashcache = newHV();
331
e8e3635e 332 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 333 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 334
27da23d5
JH
335#ifdef HAS_MMAP
336 if (!PL_mmap_page_size) {
337#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
338 {
339 SETERRNO(0, SS_NORMAL);
340# ifdef _SC_PAGESIZE
341 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
342# else
343 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
344# endif
345 if ((long) PL_mmap_page_size < 0) {
346 if (errno) {
44f8325f 347 SV * const error = ERRSV;
d4c19fe8 348 SvUPGRADE(error, SVt_PV);
0510663f 349 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
350 }
351 else
352 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
353 }
354 }
355#else
356# ifdef HAS_GETPAGESIZE
357 PL_mmap_page_size = getpagesize();
358# else
359# if defined(I_SYS_PARAM) && defined(PAGESIZE)
360 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
361# endif
362# endif
363#endif
364 if (PL_mmap_page_size <= 0)
365 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
366 (IV) PL_mmap_page_size);
367 }
368#endif /* HAS_MMAP */
369
370#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
371 PL_timesbase.tms_utime = 0;
372 PL_timesbase.tms_stime = 0;
373 PL_timesbase.tms_cutime = 0;
374 PL_timesbase.tms_cstime = 0;
375#endif
376
7d113631
NC
377 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
378
a3e6e81e 379 PL_registered_mros = newHV();
9e169432
NC
380 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
381 HvMAX(PL_registered_mros) = 0;
a3e6e81e 382
7b8dd5f4
KW
383 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
384 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
385 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
386 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
387 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
388 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
389 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
390 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
391 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
392 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
393 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
394 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
395 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
396 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
397 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
398 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
399 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
400
8990e307 401 ENTER;
79072805
LW
402}
403
954c1994 404/*
62375a60
NIS
405=for apidoc nothreadhook
406
407Stub that provides thread hook for perl_destruct when there are
408no threads.
409
410=cut
411*/
412
413int
4e9e3734 414Perl_nothreadhook(pTHX)
62375a60 415{
96a5add6 416 PERL_UNUSED_CONTEXT;
62375a60
NIS
417 return 0;
418}
419
41e4abd8
NC
420#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
421void
422Perl_dump_sv_child(pTHX_ SV *sv)
423{
424 ssize_t got;
bf357333
NC
425 const int sock = PL_dumper_fd;
426 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
427 union control_un control;
428 struct msghdr msg;
808ad2d0 429 struct iovec vec[2];
bf357333 430 struct cmsghdr *cmptr;
808ad2d0
NC
431 int returned_errno;
432 unsigned char buffer[256];
41e4abd8 433
7918f24d
NC
434 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
435
bf357333 436 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
437 return;
438
439 PerlIO_flush(Perl_debug_log);
440
bf357333
NC
441 /* All these shenanigans are to pass a file descriptor over to our child for
442 it to dump out to. We can't let it hold open the file descriptor when it
443 forks, as the file descriptor it will dump to can turn out to be one end
444 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 445 be open, the wait would be forever.) */
bf357333
NC
446
447 msg.msg_control = control.control;
448 msg.msg_controllen = sizeof(control.control);
449 /* We're a connected socket so we don't need a destination */
450 msg.msg_name = NULL;
451 msg.msg_namelen = 0;
452 msg.msg_iov = vec;
808ad2d0 453 msg.msg_iovlen = 1;
bf357333
NC
454
455 cmptr = CMSG_FIRSTHDR(&msg);
456 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
457 cmptr->cmsg_level = SOL_SOCKET;
458 cmptr->cmsg_type = SCM_RIGHTS;
459 *((int *)CMSG_DATA(cmptr)) = 1;
460
461 vec[0].iov_base = (void*)&sv;
462 vec[0].iov_len = sizeof(sv);
463 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
464
465 if(got < 0) {
bf357333 466 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
467 abort();
468 }
bf357333
NC
469 if(got < sizeof(sv)) {
470 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
471 abort();
472 }
473
808ad2d0
NC
474 /* Return protocol is
475 int: errno value
476 unsigned char: length of location string (0 for empty)
477 unsigned char*: string (not terminated)
478 */
479 vec[0].iov_base = (void*)&returned_errno;
480 vec[0].iov_len = sizeof(returned_errno);
481 vec[1].iov_base = buffer;
482 vec[1].iov_len = 1;
483
484 got = readv(sock, vec, 2);
41e4abd8
NC
485
486 if(got < 0) {
487 perror("Debug leaking scalars parent read failed");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
808ad2d0 491 if(got < sizeof(returned_errno) + 1) {
41e4abd8 492 perror("Debug leaking scalars parent short read");
808ad2d0 493 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
494 abort();
495 }
496
808ad2d0
NC
497 if (*buffer) {
498 got = read(sock, buffer + 1, *buffer);
499 if(got < 0) {
500 perror("Debug leaking scalars parent read 2 failed");
501 PerlIO_flush(PerlIO_stderr());
502 abort();
503 }
504
505 if(got < *buffer) {
506 perror("Debug leaking scalars parent short read 2");
507 PerlIO_flush(PerlIO_stderr());
508 abort();
509 }
510 }
511
512 if (returned_errno || *buffer) {
513 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
514 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 515 returned_errno, Strerror(returned_errno));
41e4abd8
NC
516 }
517}
518#endif
519
62375a60 520/*
954c1994
GS
521=for apidoc perl_destruct
522
523Shuts down a Perl interpreter. See L<perlembed>.
524
525=cut
526*/
527
31d77e54 528int
0cb96387 529perl_destruct(pTHXx)
79072805 530{
27da23d5 531 dVAR;
be2ea8ed 532 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 533 HV *hv;
2aa47728 534#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
535 pid_t child;
536#endif
9c0b6888 537 int i;
8990e307 538
7918f24d
NC
539 PERL_ARGS_ASSERT_PERL_DESTRUCT;
540#ifndef MULTIPLICITY
ed6c66dd 541 PERL_UNUSED_ARG(my_perl);
7918f24d 542#endif
9d4ba2ae 543
3d22c4f0
GG
544 assert(PL_scopestack_ix == 1);
545
7766f137
GS
546 /* wait for all pseudo-forked children to finish */
547 PERL_WAIT_FOR_CHILDREN;
548
3280af22 549 destruct_level = PL_perl_destruct_level;
36e77d41 550#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 551 {
9d4ba2ae
AL
552 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
553 if (s) {
f5199772 554 const int i = atoi(s);
36e77d41
DD
555#ifdef DEBUGGING
556 if (destruct_level < i) destruct_level = i;
557#endif
558#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
559 /* RT #114496, for perl_free */
560 PL_perl_destruct_level = i;
36e77d41 561#endif
5f05dabc 562 }
4633a7c4
LW
563 }
564#endif
565
27da23d5 566 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
567 dJMPENV;
568 int x = 0;
569
570 JMPENV_PUSH(x);
1b6737cc 571 PERL_UNUSED_VAR(x);
9ebf26ad 572 if (PL_endav && !PL_minus_c) {
ca7b837b 573 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 574 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 575 }
f3faeb53 576 JMPENV_POP;
26f423df 577 }
f3faeb53 578 LEAVE;
a0d0e21e 579 FREETMPS;
3d22c4f0 580 assert(PL_scopestack_ix == 0);
a0d0e21e 581
e00b64d4 582 /* Need to flush since END blocks can produce output */
f13a2bc0 583 my_fflush_all();
e00b64d4 584
75d476e2
SM
585#ifdef PERL_TRACE_OPS
586 /* If we traced all Perl OP usage, report and clean up */
587 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
588 for (i = 0; i <= OP_max; ++i) {
589 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
590 PL_op_exec_cnt[i] = 0;
591 }
592 /* Utility slot for easily doing little tracing experiments in the runloop: */
593 if (PL_op_exec_cnt[OP_max+1] != 0)
594 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
595 PerlIO_printf(Perl_debug_log, "\n");
596#endif
597
598
16c91539 599 if (PL_threadhook(aTHX)) {
62375a60 600 /* Threads hook has vetoed further cleanup */
c301d606 601 PL_veto_cleanup = TRUE;
37038d91 602 return STATUS_EXIT;
62375a60
NIS
603 }
604
2aa47728
NC
605#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
606 if (destruct_level != 0) {
607 /* Fork here to create a child. Our child's job is to preserve the
608 state of scalars prior to destruction, so that we can instruct it
609 to dump any scalars that we later find have leaked.
610 There's no subtlety in this code - it assumes POSIX, and it doesn't
611 fail gracefully */
612 int fd[2];
613
614 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
615 perror("Debug leaking scalars socketpair failed");
616 abort();
617 }
618
619 child = fork();
620 if(child == -1) {
621 perror("Debug leaking scalars fork failed");
622 abort();
623 }
624 if (!child) {
625 /* We are the child */
3125a5a4
NC
626 const int sock = fd[1];
627 const int debug_fd = PerlIO_fileno(Perl_debug_log);
628 int f;
808ad2d0
NC
629 const char *where;
630 /* Our success message is an integer 0, and a char 0 */
b61433a9 631 static const char success[sizeof(int) + 1] = {0};
3125a5a4 632
2aa47728 633 close(fd[0]);
2aa47728 634
3125a5a4
NC
635 /* We need to close all other file descriptors otherwise we end up
636 with interesting hangs, where the parent closes its end of a
637 pipe, and sits waiting for (another) child to terminate. Only
638 that child never terminates, because it never gets EOF, because
bf357333
NC
639 we also have the far end of the pipe open. We even need to
640 close the debugging fd, because sometimes it happens to be one
641 end of a pipe, and a process is waiting on the other end for
642 EOF. Normally it would be closed at some point earlier in
643 destruction, but if we happen to cause the pipe to remain open,
644 EOF never occurs, and we get an infinite hang. Hence all the
645 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
646
647 f = sysconf(_SC_OPEN_MAX);
648 if(f < 0) {
808ad2d0
NC
649 where = "sysconf failed";
650 goto abort;
3125a5a4
NC
651 }
652 while (f--) {
653 if (f == sock)
654 continue;
3125a5a4
NC
655 close(f);
656 }
657
2aa47728
NC
658 while (1) {
659 SV *target;
bf357333
NC
660 union control_un control;
661 struct msghdr msg;
662 struct iovec vec[1];
663 struct cmsghdr *cmptr;
664 ssize_t got;
665 int got_fd;
666
667 msg.msg_control = control.control;
668 msg.msg_controllen = sizeof(control.control);
669 /* We're a connected socket so we don't need a source */
670 msg.msg_name = NULL;
671 msg.msg_namelen = 0;
672 msg.msg_iov = vec;
673 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
674
675 vec[0].iov_base = (void*)&target;
676 vec[0].iov_len = sizeof(target);
677
678 got = recvmsg(sock, &msg, 0);
2aa47728
NC
679
680 if(got == 0)
681 break;
682 if(got < 0) {
808ad2d0
NC
683 where = "recv failed";
684 goto abort;
2aa47728
NC
685 }
686 if(got < sizeof(target)) {
808ad2d0
NC
687 where = "short recv";
688 goto abort;
2aa47728 689 }
bf357333 690
808ad2d0
NC
691 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
692 where = "no cmsg";
693 goto abort;
694 }
695 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
696 where = "wrong cmsg_len";
697 goto abort;
698 }
699 if(cmptr->cmsg_level != SOL_SOCKET) {
700 where = "wrong cmsg_level";
701 goto abort;
702 }
703 if(cmptr->cmsg_type != SCM_RIGHTS) {
704 where = "wrong cmsg_type";
705 goto abort;
706 }
bf357333
NC
707
708 got_fd = *(int*)CMSG_DATA(cmptr);
709 /* For our last little bit of trickery, put the file descriptor
710 back into Perl_debug_log, as if we never actually closed it
711 */
808ad2d0
NC
712 if(got_fd != debug_fd) {
713 if (dup2(got_fd, debug_fd) == -1) {
714 where = "dup2";
715 goto abort;
716 }
717 }
2aa47728 718 sv_dump(target);
bf357333 719
2aa47728
NC
720 PerlIO_flush(Perl_debug_log);
721
808ad2d0 722 got = write(sock, &success, sizeof(success));
2aa47728
NC
723
724 if(got < 0) {
808ad2d0
NC
725 where = "write failed";
726 goto abort;
2aa47728 727 }
808ad2d0
NC
728 if(got < sizeof(success)) {
729 where = "short write";
730 goto abort;
2aa47728
NC
731 }
732 }
733 _exit(0);
808ad2d0
NC
734 abort:
735 {
736 int send_errno = errno;
737 unsigned char length = (unsigned char) strlen(where);
738 struct iovec failure[3] = {
739 {(void*)&send_errno, sizeof(send_errno)},
740 {&length, 1},
741 {(void*)where, length}
742 };
743 int got = writev(sock, failure, 3);
744 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
745 in the parent if we try to read from the socketpair after the
746 child has exited, even if there was data to read.
747 So sleep a bit to give the parent a fighting chance of
748 reading the data. */
749 sleep(2);
750 _exit((got == -1) ? errno : 0);
751 }
bf357333 752 /* End of child. */
2aa47728 753 }
41e4abd8 754 PL_dumper_fd = fd[0];
2aa47728
NC
755 close(fd[1]);
756 }
757#endif
758
ff0cee69
PP
759 /* We must account for everything. */
760
761 /* Destroy the main CV and syntax tree */
37e77c23
FC
762 /* Set PL_curcop now, because destroying ops can cause new SVs
763 to be generated in Perl_pad_swipe, and when running with
764 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
765 op from which the filename structure member is copied. */
17fbfdf6 766 PL_curcop = &PL_compiling;
3280af22 767 if (PL_main_root) {
4e380990
DM
768 /* ensure comppad/curpad to refer to main's pad */
769 if (CvPADLIST(PL_main_cv)) {
770 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 771 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 772 }
3280af22 773 op_free(PL_main_root);
5f66b61c 774 PL_main_root = NULL;
a0d0e21e 775 }
5f66b61c 776 PL_main_start = NULL;
aac9d523
DM
777 /* note that PL_main_cv isn't usually actually freed at this point,
778 * due to the CvOUTSIDE refs from subs compiled within it. It will
779 * get freed once all the subs are freed in sv_clean_all(), for
780 * destruct_level > 0 */
3280af22 781 SvREFCNT_dec(PL_main_cv);
601f1833 782 PL_main_cv = NULL;
ca7b837b 783 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 784
13621cfb
NIS
785 /* Tell PerlIO we are about to tear things apart in case
786 we have layers which are using resources that should
787 be cleaned up now.
788 */
789
790 PerlIO_destruct(aTHX);
791
ddf23d4a
SM
792 /*
793 * Try to destruct global references. We do this first so that the
794 * destructors and destructees still exist. Some sv's might remain.
795 * Non-referenced objects are on their own.
796 */
797 sv_clean_objs();
8990e307 798
5cd24f17 799 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 800 SvREFCNT_dec(PL_warnhook);
a0714e2c 801 PL_warnhook = NULL;
3280af22 802 SvREFCNT_dec(PL_diehook);
a0714e2c 803 PL_diehook = NULL;
5cd24f17 804
4b556e6c 805 /* call exit list functions */
3280af22 806 while (PL_exitlistlen-- > 0)
acfe0abc 807 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 808
3280af22 809 Safefree(PL_exitlist);
4b556e6c 810
1c4916e5
CB
811 PL_exitlist = NULL;
812 PL_exitlistlen = 0;
813
a3e6e81e
NC
814 SvREFCNT_dec(PL_registered_mros);
815
551a8b83 816 /* jettison our possibly duplicated environment */
4b647fb0
DM
817 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
818 * so we certainly shouldn't free it here
819 */
2f42fcb0 820#ifndef PERL_MICRO
4b647fb0 821#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 822 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
823#ifdef USE_ITHREADS
824 /* only main thread can free environ[0] contents */
825 && PL_curinterp == aTHX
826#endif
827 )
828 {
551a8b83
JH
829 I32 i;
830
831 for (i = 0; environ[i]; i++)
4b420006 832 safesysfree(environ[i]);
0631ea03 833
4b420006
JH
834 /* Must use safesysfree() when working with environ. */
835 safesysfree(environ);
551a8b83
JH
836
837 environ = PL_origenviron;
838 }
839#endif
2f42fcb0 840#endif /* !PERL_MICRO */
551a8b83 841
30985c42
JH
842 if (destruct_level == 0) {
843
844 DEBUG_P(debprofdump());
845
846#if defined(PERLIO_LAYERS)
847 /* No more IO - including error messages ! */
848 PerlIO_cleanup(aTHX);
849#endif
850
851 CopFILE_free(&PL_compiling);
30985c42
JH
852
853 /* The exit() function will do everything that needs doing. */
854 return STATUS_EXIT;
855 }
856
9fa9f06b
KW
857 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
858
5f8cb046
DM
859#ifdef USE_ITHREADS
860 /* the syntax tree is shared between clones
861 * so op_free(PL_main_root) only ReREFCNT_dec's
862 * REGEXPs in the parent interpreter
863 * we need to manually ReREFCNT_dec for the clones
864 */
0547a729
DM
865 {
866 I32 i = AvFILLp(PL_regex_padav);
867 SV **ary = AvARRAY(PL_regex_padav);
868
869 for (; i; i--) {
870 SvREFCNT_dec(ary[i]);
871 ary[i] = &PL_sv_undef;
872 }
873 }
5f8cb046
DM
874#endif
875
0547a729 876
ad64d0ec 877 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
878 PL_stashcache = NULL;
879
5f05dabc
PP
880 /* loosen bonds of global variables */
881
2f9285f8
DM
882 /* XXX can PL_parser still be non-null here? */
883 if(PL_parser && PL_parser->rsfp) {
884 (void)PerlIO_close(PL_parser->rsfp);
885 PL_parser->rsfp = NULL;
8ebc5c01
PP
886 }
887
84386e14
RGS
888 if (PL_minus_F) {
889 Safefree(PL_splitstr);
890 PL_splitstr = NULL;
891 }
892
8ebc5c01 893 /* switches */
3280af22
NIS
894 PL_minus_n = FALSE;
895 PL_minus_p = FALSE;
896 PL_minus_l = FALSE;
897 PL_minus_a = FALSE;
898 PL_minus_F = FALSE;
899 PL_doswitches = FALSE;
599cee73 900 PL_dowarn = G_WARN_OFF;
1a904fc8 901#ifdef PERL_SAWAMPERSAND
d3b97530 902 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 903#endif
3280af22
NIS
904 PL_unsafe = FALSE;
905
906 Safefree(PL_inplace);
bd61b366 907 PL_inplace = NULL;
a7cb1f99 908 SvREFCNT_dec(PL_patchlevel);
1e8125c6 909 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
910
911 if (PL_e_script) {
912 SvREFCNT_dec(PL_e_script);
a0714e2c 913 PL_e_script = NULL;
8ebc5c01
PP
914 }
915
bf9cdc68
RG
916 PL_perldb = 0;
917
8ebc5c01
PP
918 /* magical thingies */
919
e23d9e2f
CS
920 SvREFCNT_dec(PL_ofsgv); /* *, */
921 PL_ofsgv = NULL;
5f05dabc 922
7889fe52 923 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 924 PL_ors_sv = NULL;
8ebc5c01 925
3280af22 926 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 927 PL_rs = NULL;
dc92893f 928
d33b2eba 929 Safefree(PL_osname); /* $^O */
bd61b366 930 PL_osname = NULL;
5f05dabc 931
3280af22 932 SvREFCNT_dec(PL_statname);
a0714e2c
SS
933 PL_statname = NULL;
934 PL_statgv = NULL;
5f05dabc 935
8ebc5c01
PP
936 /* defgv, aka *_ should be taken care of elsewhere */
937
7d5ea4e7
GS
938 /* float buffer */
939 Safefree(PL_efloatbuf);
bd61b366 940 PL_efloatbuf = NULL;
7d5ea4e7
GS
941 PL_efloatsize = 0;
942
8ebc5c01 943 /* startup and shutdown function lists */
3280af22 944 SvREFCNT_dec(PL_beginav);
5a837c8f 945 SvREFCNT_dec(PL_beginav_save);
3280af22 946 SvREFCNT_dec(PL_endav);
7d30b5c4 947 SvREFCNT_dec(PL_checkav);
ece599bd 948 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
949 SvREFCNT_dec(PL_unitcheckav);
950 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 951 SvREFCNT_dec(PL_initav);
7d49f689
NC
952 PL_beginav = NULL;
953 PL_beginav_save = NULL;
954 PL_endav = NULL;
955 PL_checkav = NULL;
956 PL_checkav_save = NULL;
3c10abe3
AG
957 PL_unitcheckav = NULL;
958 PL_unitcheckav_save = NULL;
7d49f689 959 PL_initav = NULL;
5618dfe8 960
8ebc5c01 961 /* shortcuts just get cleared */
a0714e2c
SS
962 PL_hintgv = NULL;
963 PL_errgv = NULL;
a0714e2c
SS
964 PL_argvoutgv = NULL;
965 PL_stdingv = NULL;
966 PL_stderrgv = NULL;
967 PL_last_in_gv = NULL;
a0714e2c
SS
968 PL_DBsingle = NULL;
969 PL_DBtrace = NULL;
970 PL_DBsignal = NULL;
601f1833 971 PL_DBcv = NULL;
7d49f689 972 PL_dbargs = NULL;
5c284bb0 973 PL_debstash = NULL;
8ebc5c01 974
cf93a474 975 SvREFCNT_dec(PL_envgv);
f03015cd 976 SvREFCNT_dec(PL_incgv);
722fa0e9 977 SvREFCNT_dec(PL_argvgv);
475b1e90 978 SvREFCNT_dec(PL_replgv);
8cece913
FC
979 SvREFCNT_dec(PL_DBgv);
980 SvREFCNT_dec(PL_DBline);
981 SvREFCNT_dec(PL_DBsub);
cf93a474 982 PL_envgv = NULL;
f03015cd 983 PL_incgv = NULL;
722fa0e9 984 PL_argvgv = NULL;
475b1e90 985 PL_replgv = NULL;
8cece913
FC
986 PL_DBgv = NULL;
987 PL_DBline = NULL;
988 PL_DBsub = NULL;
989
7a1c5554 990 SvREFCNT_dec(PL_argvout_stack);
7d49f689 991 PL_argvout_stack = NULL;
8ebc5c01 992
5c831c24 993 SvREFCNT_dec(PL_modglobal);
5c284bb0 994 PL_modglobal = NULL;
5c831c24 995 SvREFCNT_dec(PL_preambleav);
7d49f689 996 PL_preambleav = NULL;
5c831c24 997 SvREFCNT_dec(PL_subname);
a0714e2c 998 PL_subname = NULL;
ca0c25f6 999#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1000 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1001 PL_pidstatus = NULL;
ca0c25f6 1002#endif
5c831c24 1003 SvREFCNT_dec(PL_toptarget);
a0714e2c 1004 PL_toptarget = NULL;
5c831c24 1005 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1006 PL_bodytarget = NULL;
1007 PL_formtarget = NULL;
5c831c24 1008
d33b2eba 1009 /* free locale stuff */
b9582b6a 1010#ifdef USE_LOCALE_COLLATE
d33b2eba 1011 Safefree(PL_collation_name);
bd61b366 1012 PL_collation_name = NULL;
b9582b6a 1013#endif
d33b2eba 1014
b9582b6a 1015#ifdef USE_LOCALE_NUMERIC
d33b2eba 1016 Safefree(PL_numeric_name);
bd61b366 1017 PL_numeric_name = NULL;
a453c169 1018 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1019 PL_numeric_radix_sv = NULL;
b9582b6a 1020#endif
d33b2eba 1021
9c0b6888
KW
1022 /* clear character classes */
1023 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1024 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1025 PL_utf8_swash_ptrs[i] = NULL;
1026 }
5c831c24
GS
1027 SvREFCNT_dec(PL_utf8_mark);
1028 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1029 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1030 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1031 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1032 SvREFCNT_dec(PL_utf8_idstart);
1033 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1034 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1035 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b
KW
1036 SvREFCNT_dec(PL_AboveLatin1);
1037 SvREFCNT_dec(PL_UpperLatin1);
1038 SvREFCNT_dec(PL_Latin1);
1039 SvREFCNT_dec(PL_NonL1NonFinalFold);
1040 SvREFCNT_dec(PL_HasMultiCharFold);
a0714e2c
SS
1041 PL_utf8_mark = NULL;
1042 PL_utf8_toupper = NULL;
1043 PL_utf8_totitle = NULL;
1044 PL_utf8_tolower = NULL;
1045 PL_utf8_tofold = NULL;
1046 PL_utf8_idstart = NULL;
1047 PL_utf8_idcont = NULL;
2726813d 1048 PL_utf8_foldclosures = NULL;
9fa9f06b
KW
1049 PL_AboveLatin1 = NULL;
1050 PL_HasMultiCharFold = NULL;
1051 PL_Latin1 = NULL;
1052 PL_NonL1NonFinalFold = NULL;
1053 PL_UpperLatin1 = NULL;
86f72d56 1054 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1055 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1056 PL_XPosix_ptrs[i] = NULL;
86f72d56 1057 }
5c831c24 1058
971a9dd3 1059 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1060 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1061 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1062 cophh_free(CopHINTHASH_get(&PL_compiling));
1063 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1064 CopFILE_free(&PL_compiling);
5c831c24 1065
a0d0e21e 1066 /* Prepare to destruct main symbol table. */
5f05dabc 1067
3280af22 1068 hv = PL_defstash;
ca556bcd
DM
1069 /* break ref loop *:: <=> %:: */
1070 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1071 PL_defstash = 0;
a0d0e21e 1072 SvREFCNT_dec(hv);
5c831c24 1073 SvREFCNT_dec(PL_curstname);
a0714e2c 1074 PL_curstname = NULL;
a0d0e21e 1075
5a844595
GS
1076 /* clear queued errors */
1077 SvREFCNT_dec(PL_errors);
a0714e2c 1078 PL_errors = NULL;
5a844595 1079
dd69841b
BB
1080 SvREFCNT_dec(PL_isarev);
1081
a0d0e21e 1082 FREETMPS;
9b387841 1083 if (destruct_level >= 2) {
3280af22 1084 if (PL_scopestack_ix != 0)
9b387841
NC
1085 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1086 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1087 (long)PL_scopestack_ix);
3280af22 1088 if (PL_savestack_ix != 0)
9b387841
NC
1089 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1090 "Unbalanced saves: %ld more saves than restores\n",
1091 (long)PL_savestack_ix);
3280af22 1092 if (PL_tmps_floor != -1)
9b387841
NC
1093 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1094 (long)PL_tmps_floor + 1);
a0d0e21e 1095 if (cxstack_ix != -1)
9b387841
NC
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1097 (long)cxstack_ix + 1);
a0d0e21e 1098 }
8990e307 1099
0547a729
DM
1100#ifdef USE_ITHREADS
1101 SvREFCNT_dec(PL_regex_padav);
1102 PL_regex_padav = NULL;
1103 PL_regex_pad = NULL;
1104#endif
1105
776df701 1106#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1107 /* the entries in this list are allocated via SV PVX's, so get freed
1108 * in sv_clean_all */
1109 Safefree(PL_my_cxt_list);
776df701 1110#endif
57bb2458 1111
8990e307 1112 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1113
1114 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1115 while (sv_clean_all() > 2)
5226ed68
JH
1116 ;
1117
23083432
FC
1118#ifdef USE_ITHREADS
1119 Safefree(PL_stashpad); /* must come after sv_clean_all */
1120#endif
1121
d4777f27
GS
1122 AvREAL_off(PL_fdpid); /* no surviving entries */
1123 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1124 PL_fdpid = NULL;
d33b2eba 1125
6c644e78
GS
1126#ifdef HAVE_INTERP_INTERN
1127 sys_intern_clear();
1128#endif
1129
a38ab475
RZ
1130 /* constant strings */
1131 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1132 SvREFCNT_dec(PL_sv_consts[i]);
1133 PL_sv_consts[i] = NULL;
1134 }
1135
6e72f9df
PP
1136 /* Destruct the global string table. */
1137 {
1138 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1139 * so that sv_free() won't fail on them.
80459961
NC
1140 * Now that the global string table is using a single hunk of memory
1141 * for both HE and HEK, we either need to explicitly unshare it the
1142 * correct way, or actually free things here.
6e72f9df 1143 */
80459961
NC
1144 I32 riter = 0;
1145 const I32 max = HvMAX(PL_strtab);
c4420975 1146 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1147 HE *hent = array[0];
1148
6e72f9df 1149 for (;;) {
0453d815 1150 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1151 HE * const next = HeNEXT(hent);
9014280d 1152 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1153 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1154 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1155 Safefree(hent);
1156 hent = next;
6e72f9df
PP
1157 }
1158 if (!hent) {
1159 if (++riter > max)
1160 break;
1161 hent = array[riter];
1162 }
1163 }
80459961
NC
1164
1165 Safefree(array);
1166 HvARRAY(PL_strtab) = 0;
1167 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1168 }
3280af22 1169 SvREFCNT_dec(PL_strtab);
6e72f9df 1170
e652bb2f 1171#ifdef USE_ITHREADS
c21d1a0f 1172 /* free the pointer tables used for cloning */
a0739874 1173 ptr_table_free(PL_ptr_table);
bf9cdc68 1174 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1175#endif
a0739874 1176
d33b2eba
GS
1177 /* free special SVs */
1178
1179 SvREFCNT(&PL_sv_yes) = 0;
1180 sv_clear(&PL_sv_yes);
1181 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1182 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1183
1184 SvREFCNT(&PL_sv_no) = 0;
1185 sv_clear(&PL_sv_no);
1186 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1187 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1188
9f375a43
DM
1189 {
1190 int i;
1191 for (i=0; i<=2; i++) {
1192 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1193 sv_clear(PERL_DEBUG_PAD(i));
1194 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1195 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1196 }
1197 }
1198
0453d815 1199 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1200 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1201
eba0f806
DM
1202#ifdef DEBUG_LEAKING_SCALARS
1203 if (PL_sv_count != 0) {
1204 SV* sva;
1205 SV* sv;
eb578fdb 1206 SV* svend;
eba0f806 1207
ad64d0ec 1208 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1209 svend = &sva[SvREFCNT(sva)];
1210 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1211 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1212 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1213 " flags=0x%"UVxf
fd0854ff 1214 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1215 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1216 "serial %"UVuf"\n",
574b8821
NC
1217 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1218 pTHX__VALUE,
fd0854ff
DM
1219 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1220 sv->sv_debug_line,
1221 sv->sv_debug_inpad ? "for" : "by",
1222 sv->sv_debug_optype ?
1223 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1224 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1225 sv->sv_debug_serial
fd0854ff 1226 );
2aa47728 1227#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1228 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1229#endif
eba0f806
DM
1230 }
1231 }
1232 }
1233 }
2aa47728
NC
1234#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1235 {
1236 int status;
1237 fd_set rset;
1238 /* Wait for up to 4 seconds for child to terminate.
1239 This seems to be the least effort way of timing out on reaping
1240 its exit status. */
1241 struct timeval waitfor = {4, 0};
41e4abd8 1242 int sock = PL_dumper_fd;
2aa47728
NC
1243
1244 shutdown(sock, 1);
1245 FD_ZERO(&rset);
1246 FD_SET(sock, &rset);
1247 select(sock + 1, &rset, NULL, NULL, &waitfor);
1248 waitpid(child, &status, WNOHANG);
1249 close(sock);
1250 }
1251#endif
eba0f806 1252#endif
77abb4c6
NC
1253#ifdef DEBUG_LEAKING_SCALARS_ABORT
1254 if (PL_sv_count)
1255 abort();
1256#endif
bf9cdc68 1257 PL_sv_count = 0;
eba0f806 1258
56a2bab7 1259#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1260 /* No more IO - including error messages ! */
1261 PerlIO_cleanup(aTHX);
1262#endif
1263
9f4bd222 1264 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1265 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1266 for no arg - and will try and SvREFCNT_dec it.
1267 */
1268 SvREFCNT(&PL_sv_undef) = 0;
1269 SvREADONLY_off(&PL_sv_undef);
1270
3280af22 1271 Safefree(PL_origfilename);
bd61b366 1272 PL_origfilename = NULL;
43c5f42d 1273 Safefree(PL_reg_curpm);
dd28f7bb 1274 free_tied_hv_pool();
3280af22 1275 Safefree(PL_op_mask);
cf36064f 1276 Safefree(PL_psig_name);
bf9cdc68 1277 PL_psig_name = (SV**)NULL;
d525a7b2 1278 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1279 {
1280 /* We need to NULL PL_psig_pend first, so that
1281 signal handlers know not to use it */
1282 int *psig_save = PL_psig_pend;
1283 PL_psig_pend = (int*)NULL;
1284 Safefree(psig_save);
1285 }
6e72f9df 1286 nuke_stacks();
284167a5
SM
1287 TAINTING_set(FALSE);
1288 TAINT_WARN_set(FALSE);
3280af22 1289 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1290 PL_debug = 0;
ac27b0f5 1291
a0d0e21e 1292 DEBUG_P(debprofdump());
d33b2eba 1293
e5dd39fc 1294#ifdef USE_REENTRANT_API
10bc17b6 1295 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1296#endif
1297
612f20c3
GS
1298 sv_free_arenas();
1299
5d9a96ca
DM
1300 while (PL_regmatch_slab) {
1301 regmatch_slab *s = PL_regmatch_slab;
1302 PL_regmatch_slab = PL_regmatch_slab->next;
1303 Safefree(s);
1304 }
1305
fc36a67e
PP
1306 /* As the absolutely last thing, free the non-arena SV for mess() */
1307
3280af22 1308 if (PL_mess_sv) {
f350b448
NC
1309 /* we know that type == SVt_PVMG */
1310
9c63abab 1311 /* it could have accumulated taint magic */
f350b448
NC
1312 MAGIC* mg;
1313 MAGIC* moremagic;
1314 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1315 moremagic = mg->mg_moremagic;
1316 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1317 && mg->mg_len >= 0)
1318 Safefree(mg->mg_ptr);
1319 Safefree(mg);
9c63abab 1320 }
f350b448 1321
fc36a67e 1322 /* we know that type >= SVt_PV */
8bd4d4c5 1323 SvPV_free(PL_mess_sv);
3280af22
NIS
1324 Safefree(SvANY(PL_mess_sv));
1325 Safefree(PL_mess_sv);
a0714e2c 1326 PL_mess_sv = NULL;
fc36a67e 1327 }
37038d91 1328 return STATUS_EXIT;
79072805
LW
1329}
1330
954c1994
GS
1331/*
1332=for apidoc perl_free
1333
1334Releases a Perl interpreter. See L<perlembed>.
1335
1336=cut
1337*/
1338
79072805 1339void
0cb96387 1340perl_free(pTHXx)
79072805 1341{
5174512c
NC
1342 dVAR;
1343
7918f24d
NC
1344 PERL_ARGS_ASSERT_PERL_FREE;
1345
c301d606
DM
1346 if (PL_veto_cleanup)
1347 return;
1348
7cb608b5 1349#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1350 {
1351 /*
1352 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1353 * value as we're probably hunting memory leaks then
1354 */
36e77d41 1355 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1356 const U32 old_debug = PL_debug;
55ef9aae
MHM
1357 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1358 thread at thread exit. */
4fd0a9b8
NC
1359 if (DEBUG_m_TEST) {
1360 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1361 "free this thread's memory\n");
1362 PL_debug &= ~ DEBUG_m_FLAG;
1363 }
55ef9aae 1364 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
a78adc84 1365 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1366 PL_debug = old_debug;
55ef9aae
MHM
1367 }
1368 }
7cb608b5
NC
1369#endif
1370
acfe0abc 1371#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1372# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1373 {
acfe0abc 1374# ifdef NETWARE
7af12a34 1375 void *host = nw_internal_host;
7af12a34 1376 PerlMem_free(aTHXx);
7af12a34 1377 nw_delete_internal_host(host);
acfe0abc 1378# else
bdb50480
NC
1379 void *host = w32_internal_host;
1380 PerlMem_free(aTHXx);
7af12a34 1381 win32_delete_internal_host(host);
acfe0abc 1382# endif
7af12a34 1383 }
1c0ca838
GS
1384# else
1385 PerlMem_free(aTHXx);
1386# endif
acfe0abc
GS
1387#else
1388 PerlMem_free(aTHXx);
76e3520e 1389#endif
79072805
LW
1390}
1391
b7f7fff6 1392#if defined(USE_ITHREADS)
aebd1ac7
GA
1393/* provide destructors to clean up the thread key when libperl is unloaded */
1394#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1395
826955bd 1396#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1397#pragma fini "perl_fini"
666ad1ec
GA
1398#elif defined(__sun) && !defined(__GNUC__)
1399#pragma fini (perl_fini)
aebd1ac7
GA
1400#endif
1401
0dbb1585
AL
1402static void
1403#if defined(__GNUC__)
1404__attribute__((destructor))
aebd1ac7 1405#endif
de009b76 1406perl_fini(void)
aebd1ac7 1407{
27da23d5 1408 dVAR;
5c64bffd
NC
1409 if (
1410#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1411 my_vars &&
1412#endif
1413 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1414 FREE_THREAD_KEY;
1415}
1416
1417#endif /* WIN32 */
1418#endif /* THREADS */
1419
4b556e6c 1420void
864dbfa3 1421Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1422{
97aff369 1423 dVAR;
3280af22
NIS
1424 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1425 PL_exitlist[PL_exitlistlen].fn = fn;
1426 PL_exitlist[PL_exitlistlen].ptr = ptr;
1427 ++PL_exitlistlen;
4b556e6c
JD
1428}
1429
954c1994
GS
1430/*
1431=for apidoc perl_parse
1432
1433Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1434
1435=cut
1436*/
1437
03d9f026
FC
1438#define SET_CURSTASH(newstash) \
1439 if (PL_curstash != newstash) { \
1440 SvREFCNT_dec(PL_curstash); \
1441 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1442 }
1443
79072805 1444int
0cb96387 1445perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1446{
27da23d5 1447 dVAR;
6224f72b 1448 I32 oldscope;
6224f72b 1449 int ret;
db36c5a1 1450 dJMPENV;
8d063cd8 1451
7918f24d
NC
1452 PERL_ARGS_ASSERT_PERL_PARSE;
1453#ifndef MULTIPLICITY
ed6c66dd 1454 PERL_UNUSED_ARG(my_perl);
7918f24d 1455#endif
7dc86639 1456#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1457 {
7dc86639
YO
1458 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1459
1460 if (s && (atoi(s) == 1)) {
1461 unsigned char *seed= PERL_HASH_SEED;
1462 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1463 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1464 while (seed < seed_end) {
1465 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1466 }
6a5b4183
YO
1467#ifdef PERL_HASH_RANDOMIZE_KEYS
1468 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1469 PL_HASH_RAND_BITS_ENABLED,
1470 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1471#endif
7dc86639
YO
1472 PerlIO_printf(Perl_debug_log, "\n");
1473 }
b0891165
JH
1474 }
1475#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1476 PL_origargc = argc;
e2975953 1477 PL_origargv = argv;
a0d0e21e 1478
a2722ac9
GA
1479 if (PL_origalen != 0) {
1480 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1481 }
1482 else {
3cb9023d
JH
1483 /* Set PL_origalen be the sum of the contiguous argv[]
1484 * elements plus the size of the env in case that it is
e9137a8e 1485 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1486 * as the maximum modifiable length of $0. In the worst case
1487 * the area we are able to modify is limited to the size of
43c32782 1488 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1489 * --jhi */
e1ec3a88 1490 const char *s = NULL;
54bfe034 1491 int i;
1b6737cc 1492 const UV mask =
7d8e7db3 1493 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1494 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1495 const UV aligned =
43c32782
JH
1496 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1497
1498 /* See if all the arguments are contiguous in memory. Note
1499 * that 'contiguous' is a loose term because some platforms
1500 * align the argv[] and the envp[]. If the arguments look
1501 * like non-aligned, assume that they are 'strictly' or
1502 * 'traditionally' contiguous. If the arguments look like
1503 * aligned, we just check that they are within aligned
1504 * PTRSIZE bytes. As long as no system has something bizarre
1505 * like the argv[] interleaved with some other data, we are
1506 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1507 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1508 while (*s) s++;
1509 for (i = 1; i < PL_origargc; i++) {
1510 if ((PL_origargv[i] == s + 1
43c32782 1511#ifdef OS2
c8941eeb 1512 || PL_origargv[i] == s + 2
43c32782 1513#endif
c8941eeb
JH
1514 )
1515 ||
1516 (aligned &&
1517 (PL_origargv[i] > s &&
1518 PL_origargv[i] <=
1519 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1520 )
1521 {
1522 s = PL_origargv[i];
1523 while (*s) s++;
1524 }
1525 else
1526 break;
54bfe034 1527 }
54bfe034 1528 }
a4a109c2
JD
1529
1530#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1531 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1532 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1533 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1534 ||
1535 (aligned &&
1536 (PL_origenviron[0] > s &&
1537 PL_origenviron[0] <=
1538 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1539 )
1540 {
9d419b5f 1541#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1542 s = PL_origenviron[0];
1543 while (*s) s++;
1544#endif
bd61b366 1545 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1546 /* Force copy of environment. */
1547 for (i = 1; PL_origenviron[i]; i++) {
1548 if (PL_origenviron[i] == s + 1
1549 ||
1550 (aligned &&
1551 (PL_origenviron[i] > s &&
1552 PL_origenviron[i] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 )
1555 {
1556 s = PL_origenviron[i];
1557 while (*s) s++;
1558 }
1559 else
1560 break;
54bfe034 1561 }
43c32782 1562 }
54bfe034 1563 }
a4a109c2
JD
1564#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1565
2d2af554 1566 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1567 }
1568
3280af22 1569 if (PL_do_undump) {
a0d0e21e
LW
1570
1571 /* Come here if running an undumped a.out. */
1572
3280af22
NIS
1573 PL_origfilename = savepv(argv[0]);
1574 PL_do_undump = FALSE;
a0d0e21e 1575 cxstack_ix = -1; /* start label stack again */
748a9306 1576 init_ids();
284167a5 1577 assert (!TAINT_get);
b7975bdd 1578 TAINT;
e2051532 1579 set_caret_X();
b7975bdd 1580 TAINT_NOT;
a0d0e21e
LW
1581 init_postdump_symbols(argc,argv,env);
1582 return 0;
1583 }
1584
3280af22 1585 if (PL_main_root) {
3280af22 1586 op_free(PL_main_root);
5f66b61c 1587 PL_main_root = NULL;
ff0cee69 1588 }
5f66b61c 1589 PL_main_start = NULL;
3280af22 1590 SvREFCNT_dec(PL_main_cv);
601f1833 1591 PL_main_cv = NULL;
79072805 1592
3280af22
NIS
1593 time(&PL_basetime);
1594 oldscope = PL_scopestack_ix;
599cee73 1595 PL_dowarn = G_WARN_OFF;
f86702cc 1596
14dd3ad8 1597 JMPENV_PUSH(ret);
6224f72b 1598 switch (ret) {
312caa8e 1599 case 0:
14dd3ad8 1600 parse_body(env,xsinit);
9ebf26ad 1601 if (PL_unitcheckav) {
3c10abe3 1602 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1603 }
1604 if (PL_checkav) {
ca7b837b 1605 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1606 call_list(oldscope, PL_checkav);
9ebf26ad 1607 }
14dd3ad8
GS
1608 ret = 0;
1609 break;
6224f72b
GS
1610 case 1:
1611 STATUS_ALL_FAILURE;
1612 /* FALL THROUGH */
1613 case 2:
1614 /* my_exit() was called */
3280af22 1615 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1616 LEAVE;
1617 FREETMPS;
03d9f026 1618 SET_CURSTASH(PL_defstash);
9ebf26ad 1619 if (PL_unitcheckav) {
3c10abe3 1620 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1621 }
1622 if (PL_checkav) {
ca7b837b 1623 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1624 call_list(oldscope, PL_checkav);
9ebf26ad 1625 }
37038d91 1626 ret = STATUS_EXIT;
14dd3ad8 1627 break;
6224f72b 1628 case 3:
bf49b057 1629 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1630 ret = 1;
1631 break;
6224f72b 1632 }
14dd3ad8
GS
1633 JMPENV_POP;
1634 return ret;
1635}
1636
4a5df386
NC
1637/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1638 miniperl, and we need to see those flags reflected in the values here. */
1639
1640/* What this returns is subject to change. Use the public interface in Config.
1641 */
1642static void
1643S_Internals_V(pTHX_ CV *cv)
1644{
1645 dXSARGS;
1646#ifdef LOCAL_PATCH_COUNT
1647 const int local_patch_count = LOCAL_PATCH_COUNT;
1648#else
1649 const int local_patch_count = 0;
1650#endif
2dc296d2 1651 const int entries = 3 + local_patch_count;
4a5df386 1652 int i;
fe1c5936 1653 static const char non_bincompat_options[] =
4a5df386
NC
1654# ifdef DEBUGGING
1655 " DEBUGGING"
1656# endif
1657# ifdef NO_MATHOMS
0d311fbe 1658 " NO_MATHOMS"
4a5df386 1659# endif
59b86f4b
DM
1660# ifdef NO_HASH_SEED
1661 " NO_HASH_SEED"
1662# endif
3b0e4ee2
MB
1663# ifdef NO_TAINT_SUPPORT
1664 " NO_TAINT_SUPPORT"
1665# endif
4a5df386
NC
1666# ifdef PERL_DISABLE_PMC
1667 " PERL_DISABLE_PMC"
1668# endif
1669# ifdef PERL_DONT_CREATE_GVSV
1670 " PERL_DONT_CREATE_GVSV"
1671# endif
9a044a43
NC
1672# ifdef PERL_EXTERNAL_GLOB
1673 " PERL_EXTERNAL_GLOB"
1674# endif
59b86f4b
DM
1675# ifdef PERL_HASH_FUNC_SIPHASH
1676 " PERL_HASH_FUNC_SIPHASH"
1677# endif
1678# ifdef PERL_HASH_FUNC_SDBM
1679 " PERL_HASH_FUNC_SDBM"
1680# endif
1681# ifdef PERL_HASH_FUNC_DJB2
1682 " PERL_HASH_FUNC_DJB2"
1683# endif
1684# ifdef PERL_HASH_FUNC_SUPERFAST
1685 " PERL_HASH_FUNC_SUPERFAST"
1686# endif
1687# ifdef PERL_HASH_FUNC_MURMUR3
1688 " PERL_HASH_FUNC_MURMUR3"
1689# endif
1690# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1691 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1692# endif
1693# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1694 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1695# endif
1696# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1697 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1698# endif
4a5df386
NC
1699# ifdef PERL_IS_MINIPERL
1700 " PERL_IS_MINIPERL"
1701# endif
1702# ifdef PERL_MALLOC_WRAP
1703 " PERL_MALLOC_WRAP"
1704# endif
1705# ifdef PERL_MEM_LOG
1706 " PERL_MEM_LOG"
1707# endif
1708# ifdef PERL_MEM_LOG_NOIMPL
1709 " PERL_MEM_LOG_NOIMPL"
1710# endif
2542212d
DM
1711# ifdef PERL_NEW_COPY_ON_WRITE
1712 " PERL_NEW_COPY_ON_WRITE"
1713# endif
59b86f4b
DM
1714# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1715 " PERL_PERTURB_KEYS_DETERMINISTIC"
1716# endif
1717# ifdef PERL_PERTURB_KEYS_DISABLED
1718 " PERL_PERTURB_KEYS_DISABLED"
1719# endif
1720# ifdef PERL_PERTURB_KEYS_RANDOM
1721 " PERL_PERTURB_KEYS_RANDOM"
1722# endif
c3cf41ec
NC
1723# ifdef PERL_PRESERVE_IVUV
1724 " PERL_PRESERVE_IVUV"
1725# endif
c051e30b
NC
1726# ifdef PERL_RELOCATABLE_INCPUSH
1727 " PERL_RELOCATABLE_INCPUSH"
1728# endif
4a5df386
NC
1729# ifdef PERL_USE_DEVEL
1730 " PERL_USE_DEVEL"
1731# endif
1732# ifdef PERL_USE_SAFE_PUTENV
1733 " PERL_USE_SAFE_PUTENV"
1734# endif
a3749cf3
NC
1735# ifdef UNLINK_ALL_VERSIONS
1736 " UNLINK_ALL_VERSIONS"
1737# endif
de618ee4
NC
1738# ifdef USE_ATTRIBUTES_FOR_PERLIO
1739 " USE_ATTRIBUTES_FOR_PERLIO"
1740# endif
4a5df386
NC
1741# ifdef USE_FAST_STDIO
1742 " USE_FAST_STDIO"
1743# endif
59b86f4b
DM
1744# ifdef USE_HASH_SEED_EXPLICIT
1745 " USE_HASH_SEED_EXPLICIT"
1746# endif
98548bdf
NC
1747# ifdef USE_LOCALE
1748 " USE_LOCALE"
1749# endif
98548bdf
NC
1750# ifdef USE_LOCALE_CTYPE
1751 " USE_LOCALE_CTYPE"
1752# endif
5a8d8935
NC
1753# ifdef USE_PERL_ATOF
1754 " USE_PERL_ATOF"
1755# endif
0d311fbe
NC
1756# ifdef USE_SITECUSTOMIZE
1757 " USE_SITECUSTOMIZE"
1758# endif
4a5df386
NC
1759 ;
1760 PERL_UNUSED_ARG(cv);
1761 PERL_UNUSED_ARG(items);
1762
1763 EXTEND(SP, entries);
1764
1765 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1766 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1767 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1768
1769#ifdef __DATE__
1770# ifdef __TIME__
1771 PUSHs(Perl_newSVpvn_flags(aTHX_
1772 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1773 SVs_TEMP));
1774# else
1775 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1776 SVs_TEMP));
1777# endif
1778#else
1779 PUSHs(&PL_sv_undef);
1780#endif
1781
4a5df386
NC
1782 for (i = 1; i <= local_patch_count; i++) {
1783 /* This will be an undef, if PL_localpatches[i] is NULL. */
1784 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1785 }
1786
1787 XSRETURN(entries);
1788}
1789
be71fc8f
NC
1790#define INCPUSH_UNSHIFT 0x01
1791#define INCPUSH_ADD_OLD_VERS 0x02
1792#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1793#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1794#define INCPUSH_NOT_BASEDIR 0x10
1795#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1796#define INCPUSH_ADD_SUB_DIRS \
1797 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1798
312caa8e 1799STATIC void *
14dd3ad8 1800S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1801{
27da23d5 1802 dVAR;
2f9285f8 1803 PerlIO *rsfp;
312caa8e 1804 int argc = PL_origargc;
8f42b153 1805 char **argv = PL_origargv;
e1ec3a88 1806 const char *scriptname = NULL;
312caa8e 1807 VOL bool dosearch = FALSE;
eb578fdb 1808 char c;
737c24fc 1809 bool doextract = FALSE;
bd61b366 1810 const char *cddir = NULL;
ab019eaa 1811#ifdef USE_SITECUSTOMIZE
20ef40cf 1812 bool minus_f = FALSE;
ab019eaa 1813#endif
95670bde 1814 SV *linestr_sv = NULL;
5486870f 1815 bool add_read_e_script = FALSE;
87606032 1816 U32 lex_start_flags = 0;
009d90df 1817
ca7b837b 1818 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1819
6224f72b 1820 init_main_stash();
54310121 1821
c7030b81
NC
1822 {
1823 const char *s;
6224f72b
GS
1824 for (argc--,argv++; argc > 0; argc--,argv++) {
1825 if (argv[0][0] != '-' || !argv[0][1])
1826 break;
6224f72b
GS
1827 s = argv[0]+1;
1828 reswitch:
47f56822 1829 switch ((c = *s)) {
729a02f2 1830 case 'C':
1d5472a9
GS
1831#ifndef PERL_STRICT_CR
1832 case '\r':
1833#endif
6224f72b
GS
1834 case ' ':
1835 case '0':
1836 case 'F':
1837 case 'a':
1838 case 'c':
1839 case 'd':
1840 case 'D':
1841 case 'h':
1842 case 'i':
1843 case 'l':
1844 case 'M':
1845 case 'm':
1846 case 'n':
1847 case 'p':
1848 case 's':
1849 case 'u':
1850 case 'U':
1851 case 'v':
599cee73
PM
1852 case 'W':
1853 case 'X':
6224f72b 1854 case 'w':
97bd5664 1855 if ((s = moreswitches(s)))
6224f72b
GS
1856 goto reswitch;
1857 break;
33b78306 1858
1dbad523 1859 case 't':
284167a5
SM
1860#if SILENT_NO_TAINT_SUPPORT
1861 /* silently ignore */
1862#elif NO_TAINT_SUPPORT
3231f579 1863 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1864 "Cowardly refusing to run with -t or -T flags");
1865#else
22f7c9c9 1866 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1867 if( !TAINTING_get ) {
1868 TAINT_WARN_set(TRUE);
1869 TAINTING_set(TRUE);
317ea90d 1870 }
284167a5 1871#endif
317ea90d
MS
1872 s++;
1873 goto reswitch;
6224f72b 1874 case 'T':
284167a5
SM
1875#if SILENT_NO_TAINT_SUPPORT
1876 /* silently ignore */
1877#elif NO_TAINT_SUPPORT
3231f579 1878 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1879 "Cowardly refusing to run with -t or -T flags");
1880#else
22f7c9c9 1881 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1882 TAINTING_set(TRUE);
1883 TAINT_WARN_set(FALSE);
1884#endif
6224f72b
GS
1885 s++;
1886 goto reswitch;
f86702cc 1887
bc9b29db
RH
1888 case 'E':
1889 PL_minus_E = TRUE;
1890 /* FALL THROUGH */
6224f72b 1891 case 'e':
f20b2998 1892 forbid_setid('e', FALSE);
3280af22 1893 if (!PL_e_script) {
396482e1 1894 PL_e_script = newSVpvs("");
5486870f 1895 add_read_e_script = TRUE;
6224f72b
GS
1896 }
1897 if (*++s)
3280af22 1898 sv_catpv(PL_e_script, s);
6224f72b 1899 else if (argv[1]) {
3280af22 1900 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1901 argc--,argv++;
1902 }
1903 else
47f56822 1904 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1905 sv_catpvs(PL_e_script, "\n");
6224f72b 1906 break;
afe37c7d 1907
20ef40cf 1908 case 'f':
f5542d3a 1909#ifdef USE_SITECUSTOMIZE
20ef40cf 1910 minus_f = TRUE;
f5542d3a 1911#endif
20ef40cf
GA
1912 s++;
1913 goto reswitch;
1914
6224f72b 1915 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1916 forbid_setid('I', FALSE);
bd61b366 1917 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1918 argc--,argv++;
1919 }
6224f72b 1920 if (s && *s) {
0df16ed7 1921 STRLEN len = strlen(s);
55b4bc1c 1922 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1923 }
1924 else
a67e862a 1925 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1926 break;
6224f72b 1927 case 'S':
f20b2998 1928 forbid_setid('S', FALSE);
6224f72b
GS
1929 dosearch = TRUE;
1930 s++;
1931 goto reswitch;
1932 case 'V':
7edfd0ef
NC
1933 {
1934 SV *opts_prog;
1935
7edfd0ef 1936 if (*++s != ':') {
37ca4a5b 1937 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1938 }
1939 else {
1940 ++s;
1941 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1942 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1943 0, s, 0);
1944 s += strlen(s);
1945 }
37ca4a5b 1946 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1947 /* don't look for script or read stdin */
1948 scriptname = BIT_BUCKET;
1949 goto reswitch;
6224f72b 1950 }
6224f72b 1951 case 'x':
737c24fc 1952 doextract = TRUE;
6224f72b 1953 s++;
304334da 1954 if (*s)
f4c556ac 1955 cddir = s;
6224f72b
GS
1956 break;
1957 case 0:
1958 break;
1959 case '-':
1960 if (!*++s || isSPACE(*s)) {
1961 argc--,argv++;
1962 goto switch_end;
1963 }
ee8bc8b7
NC
1964 /* catch use of gnu style long options.
1965 Both of these exit immediately. */
1966 if (strEQ(s, "version"))
1967 minus_v();
1968 if (strEQ(s, "help"))
1969 usage();
6224f72b
GS
1970 s--;
1971 /* FALL THROUGH */
1972 default:
cea2e8a9 1973 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1974 }
1975 }
c7030b81
NC
1976 }
1977
6224f72b 1978 switch_end:
54310121 1979
c7030b81
NC
1980 {
1981 char *s;
1982
f675dbe5
CB
1983 if (
1984#ifndef SECURE_INTERNAL_GETENV
284167a5 1985 !TAINTING_get &&
f675dbe5 1986#endif
cf756827 1987 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1988 {
74288ac8
GS
1989 while (isSPACE(*s))
1990 s++;
317ea90d 1991 if (*s == '-' && *(s+1) == 'T') {
284167a5
SM
1992#if SILENT_NO_TAINT_SUPPORT
1993 /* silently ignore */
1994#elif NO_TAINT_SUPPORT
3231f579 1995 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1996 "Cowardly refusing to run with -t or -T flags");
1997#else
22f7c9c9 1998 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1999 TAINTING_set(TRUE);
2000 TAINT_WARN_set(FALSE);
2001#endif
317ea90d 2002 }
74288ac8 2003 else {
bd61b366 2004 char *popt_copy = NULL;
74288ac8 2005 while (s && *s) {
54913509 2006 const char *d;
74288ac8
GS
2007 while (isSPACE(*s))
2008 s++;
2009 if (*s == '-') {
2010 s++;
2011 if (isSPACE(*s))
2012 continue;
2013 }
4ea8f8fb 2014 d = s;
74288ac8
GS
2015 if (!*s)
2016 break;
2b622f1a 2017 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2018 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2019 while (++s && *s) {
2020 if (isSPACE(*s)) {
cf756827 2021 if (!popt_copy) {
bfa6c418
NC
2022 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2023 s = popt_copy + (s - d);
2024 d = popt_copy;
cf756827 2025 }
4ea8f8fb
MS
2026 *s++ = '\0';
2027 break;
2028 }
2029 }
1c4db469 2030 if (*d == 't') {
284167a5
SM
2031#if SILENT_NO_TAINT_SUPPORT
2032 /* silently ignore */
2033#elif NO_TAINT_SUPPORT
3231f579 2034 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2035 "Cowardly refusing to run with -t or -T flags");
2036#else
2037 if( !TAINTING_get) {
2038 TAINT_WARN_set(TRUE);
2039 TAINTING_set(TRUE);
317ea90d 2040 }
284167a5 2041#endif
1c4db469 2042 } else {
97bd5664 2043 moreswitches(d);
1c4db469 2044 }
6224f72b 2045 }
6224f72b
GS
2046 }
2047 }
c7030b81 2048 }
a0d0e21e 2049
c29067d7
CH
2050 /* Set $^X early so that it can be used for relocatable paths in @INC */
2051 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2052 assert (!TAINT_get);
c29067d7 2053 TAINT;
e2051532 2054 set_caret_X();
c29067d7
CH
2055 TAINT_NOT;
2056
43c0c913 2057#if defined(USE_SITECUSTOMIZE)
20ef40cf 2058 if (!minus_f) {
43c0c913 2059 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2060 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2061 ie a q() operator with a NUL byte as a the delimiter. This avoids
2062 problems with pathnames containing (say) ' */
43c0c913
NC
2063# ifdef PERL_IS_MINIPERL
2064 AV *const inc = GvAV(PL_incgv);
2065 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2066
2067 if (inc0) {
15870c5c
NC
2068 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2069 it should be reported immediately as a build failure. */
43c0c913
NC
2070 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2071 Perl_newSVpvf(aTHX_
15870c5c 2072 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
fc81b718
NC
2073 0, *inc0, 0,
2074 0, *inc0, 0));
43c0c913
NC
2075 }
2076# else
2077 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2078 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2079 if (raw_sitelib) {
2080 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2081 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2082 INCPUSH_CAN_RELOCATE);
2083 const char *const sitelib = SvPVX(sitelib_sv);
2084 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2085 Perl_newSVpvf(aTHX_
2086 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2087 0, sitelib, 0,
2088 0, sitelib, 0));
2089 assert (SvREFCNT(sitelib_sv) == 1);
2090 SvREFCNT_dec(sitelib_sv);
2091 }
43c0c913 2092# endif
20ef40cf
GA
2093 }
2094#endif
2095
6224f72b
GS
2096 if (!scriptname)
2097 scriptname = argv[0];
3280af22 2098 if (PL_e_script) {
6224f72b
GS
2099 argc++,argv--;
2100 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2101 }
bd61b366 2102 else if (scriptname == NULL) {
6224f72b
GS
2103#ifdef MSDOS
2104 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2105 moreswitches("h");
6224f72b
GS
2106#endif
2107 scriptname = "-";
2108 }
2109
284167a5 2110 assert (!TAINT_get);
2cace6ac 2111 init_perllib();
6224f72b 2112
a52eba0e 2113 {
f20b2998 2114 bool suidscript = FALSE;
829372d3 2115
8d113837 2116 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2117 if (!rsfp) {
2118 rsfp = PerlIO_stdin();
87606032 2119 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2120 }
6224f72b 2121
b24bc095 2122 validate_suid(rsfp);
6224f72b 2123
64ca3a65 2124#ifndef PERL_MICRO
a52eba0e
NC
2125# if defined(SIGCHLD) || defined(SIGCLD)
2126 {
2127# ifndef SIGCHLD
2128# define SIGCHLD SIGCLD
2129# endif
2130 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2131 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2132 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2133 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2134 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2135 }
0b5b802d 2136 }
a52eba0e 2137# endif
64ca3a65 2138#endif
0b5b802d 2139
737c24fc 2140 if (doextract) {
faef540c 2141
f20b2998 2142 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2143 setuid scripts. */
2144 forbid_setid('x', suidscript);
f20b2998 2145 /* Hence you can't get here if suidscript is true */
faef540c 2146
95670bde
NC
2147 linestr_sv = newSV_type(SVt_PV);
2148 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2149 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2150 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2151 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2152 }
f4c556ac 2153 }
6224f72b 2154
ea726b52 2155 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2156 CvUNIQUE_on(PL_compcv);
2157
dd2155a4 2158 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2159
dd69841b
BB
2160 PL_isarev = newHV();
2161
0c4f7ff0 2162 boot_core_PerlIO();
6224f72b 2163 boot_core_UNIVERSAL();
e1a479c5 2164 boot_core_mro();
4a5df386 2165 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2166
2167 if (xsinit)
acfe0abc 2168 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2169#ifndef PERL_MICRO
739a0b84 2170#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2171 init_os_extras();
6224f72b 2172#endif
64ca3a65 2173#endif
6224f72b 2174
29209bc5 2175#ifdef USE_SOCKS
1b9c9cf5
DH
2176# ifdef HAS_SOCKS5_INIT
2177 socks5_init(argv[0]);
2178# else
29209bc5 2179 SOCKSinit(argv[0]);
1b9c9cf5 2180# endif
ac27b0f5 2181#endif
29209bc5 2182
6224f72b
GS
2183 init_predump_symbols();
2184 /* init_postdump_symbols not currently designed to be called */
2185 /* more than once (ENV isn't cleared first, for example) */
2186 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2187 if (!PL_do_undump)
6224f72b
GS
2188 init_postdump_symbols(argc,argv,env);
2189
27da23d5
JH
2190 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2191 * or explicitly in some platforms.
085a54d9 2192 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2193 * look like the user wants to use UTF-8. */
a0fd4948 2194#if defined(__SYMBIAN32__)
27da23d5
JH
2195 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2196#endif
e27b5b51 2197# ifndef PERL_IS_MINIPERL
06e66572
JH
2198 if (PL_unicode) {
2199 /* Requires init_predump_symbols(). */
a05d7ebb 2200 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2201 IO* io;
2202 PerlIO* fp;
2203 SV* sv;
2204
a05d7ebb 2205 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2206 * and the default open disciplines. */
a05d7ebb
JH
2207 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2208 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2209 (fp = IoIFP(io)))
2210 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2211 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2212 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2213 (fp = IoOFP(io)))
2214 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2215 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2216 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2217 (fp = IoOFP(io)))
2218 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2219 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2220 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2221 SVt_PV)))) {
a05d7ebb
JH
2222 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2223 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2224 if (in) {
2225 if (out)
76f68e9b 2226 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2227 else
76f68e9b 2228 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2229 }
2230 else if (out)
76f68e9b 2231 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2232 SvSETMAGIC(sv);
2233 }
b310b053
JH
2234 }
2235 }
e27b5b51 2236#endif
b310b053 2237
c7030b81
NC
2238 {
2239 const char *s;
4ffa73a3
JH
2240 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2241 if (strEQ(s, "unsafe"))
2242 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2243 else if (strEQ(s, "safe"))
2244 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2245 else
2246 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2247 }
c7030b81 2248 }
4ffa73a3 2249
81d86705 2250#ifdef PERL_MAD
c7030b81
NC
2251 {
2252 const char *s;
284167a5 2253 if (!TAINTING_get &&
2cc12391 2254 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2255 PL_madskills = 1;
2256 PL_minus_c = 1;
2257 if (!s || !s[0])
2258 PL_xmlfp = PerlIO_stdout();
2259 else {
2260 PL_xmlfp = PerlIO_open(s, "w");
2261 if (!PL_xmlfp)
2262 Perl_croak(aTHX_ "Can't open %s", s);
2263 }
1a9a51d4 2264 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2265 }
c7030b81
NC
2266 }
2267
2268 {
2269 const char *s;
81d86705
NC
2270 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2271 PL_madskills = atoi(s);
1a9a51d4 2272 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2273 }
c7030b81 2274 }
81d86705
NC
2275#endif
2276
87606032 2277 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2278 SvREFCNT_dec(linestr_sv);
95670bde 2279
219f7226 2280 PL_subname = newSVpvs("main");
6224f72b 2281
5486870f
DM
2282 if (add_read_e_script)
2283 filter_add(read_e_script, NULL);
2284
6224f72b
GS
2285 /* now parse the script */
2286
93189314 2287 SETERRNO(0,SS_NORMAL);
28ac2b49 2288 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2289 if (PL_minus_c)
cea2e8a9 2290 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2291 else {
cea2e8a9 2292 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2293 PL_origfilename);
6224f72b
GS
2294 }
2295 }
57843af0 2296 CopLINE_set(PL_curcop, 0);
03d9f026 2297 SET_CURSTASH(PL_defstash);
3280af22
NIS
2298 if (PL_e_script) {
2299 SvREFCNT_dec(PL_e_script);
a0714e2c 2300 PL_e_script = NULL;
6224f72b
GS
2301 }
2302
3280af22 2303 if (PL_do_undump)
6224f72b
GS
2304 my_unexec();
2305
57843af0
GS
2306 if (isWARN_ONCE) {
2307 SAVECOPFILE(PL_curcop);
2308 SAVECOPLINE(PL_curcop);
3280af22 2309 gv_check(PL_defstash);
57843af0 2310 }
6224f72b
GS
2311
2312 LEAVE;
2313 FREETMPS;
2314
2315#ifdef MYMALLOC
f6a607bc
RGS
2316 {
2317 const char *s;
6224f72b
GS
2318 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2319 dump_mstats("after compilation:");
f6a607bc 2320 }
6224f72b
GS
2321#endif
2322
2323 ENTER;
febb3a6d 2324 PL_restartjmpenv = NULL;
3280af22 2325 PL_restartop = 0;
312caa8e 2326 return NULL;
6224f72b
GS
2327}
2328
954c1994
GS
2329/*
2330=for apidoc perl_run
2331
2332Tells a Perl interpreter to run. See L<perlembed>.
2333
2334=cut
2335*/
2336
6224f72b 2337int
0cb96387 2338perl_run(pTHXx)
6224f72b 2339{
97aff369 2340 dVAR;
6224f72b 2341 I32 oldscope;
14dd3ad8 2342 int ret = 0;
db36c5a1 2343 dJMPENV;
6224f72b 2344
7918f24d
NC
2345 PERL_ARGS_ASSERT_PERL_RUN;
2346#ifndef MULTIPLICITY
ed6c66dd 2347 PERL_UNUSED_ARG(my_perl);
7918f24d 2348#endif
9d4ba2ae 2349
3280af22 2350 oldscope = PL_scopestack_ix;
96e176bf
CL
2351#ifdef VMS
2352 VMSISH_HUSHED = 0;
2353#endif
6224f72b 2354
14dd3ad8 2355 JMPENV_PUSH(ret);
6224f72b
GS
2356 switch (ret) {
2357 case 1:
2358 cxstack_ix = -1; /* start context stack again */
312caa8e 2359 goto redo_body;
14dd3ad8 2360 case 0: /* normal completion */
14dd3ad8
GS
2361 redo_body:
2362 run_body(oldscope);
14dd3ad8
GS
2363 /* FALL THROUGH */
2364 case 2: /* my_exit() */
3280af22 2365 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2366 LEAVE;
2367 FREETMPS;
03d9f026 2368 SET_CURSTASH(PL_defstash);
3a1ee7e8 2369 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2370 PL_endav && !PL_minus_c) {
ca7b837b 2371 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2372 call_list(oldscope, PL_endav);
9ebf26ad 2373 }
6224f72b
GS
2374#ifdef MYMALLOC
2375 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2376 dump_mstats("after execution: ");
2377#endif
37038d91 2378 ret = STATUS_EXIT;
14dd3ad8 2379 break;
6224f72b 2380 case 3:
312caa8e
CS
2381 if (PL_restartop) {
2382 POPSTACK_TO(PL_mainstack);
2383 goto redo_body;
6224f72b 2384 }
5637ef5b 2385 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2386 FREETMPS;
14dd3ad8
GS
2387 ret = 1;
2388 break;
6224f72b
GS
2389 }
2390
14dd3ad8
GS
2391 JMPENV_POP;
2392 return ret;
312caa8e
CS
2393}
2394
dd374669 2395STATIC void
14dd3ad8
GS
2396S_run_body(pTHX_ I32 oldscope)
2397{
97aff369 2398 dVAR;
d3b97530
DM
2399 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2400 PL_sawampersand ? "Enabling" : "Omitting",
2401 (unsigned int)(PL_sawampersand)));
6224f72b 2402
3280af22 2403 if (!PL_restartop) {
81d86705
NC
2404#ifdef PERL_MAD
2405 if (PL_xmlfp) {
2406 xmldump_all();
2407 exit(0); /* less likely to core dump than my_exit(0) */
2408 }
2409#endif
cf2782cd 2410#ifdef DEBUGGING
f0e3f042
CS
2411 if (DEBUG_x_TEST || DEBUG_B_TEST)
2412 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2413 if (!DEBUG_q_TEST)
2414 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2415#endif
6224f72b 2416
3280af22 2417 if (PL_minus_c) {
bf49b057 2418 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2419 my_exit(0);
2420 }
3280af22 2421 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2422 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2423 if (PL_initav) {
ca7b837b 2424 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2425 call_list(oldscope, PL_initav);
9ebf26ad 2426 }
f1fac472 2427#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2428 if (PL_main_root && PL_main_root->op_slabbed)
2429 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2430#endif
6224f72b
GS
2431 }
2432
2433 /* do it */
2434
ca7b837b 2435 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2436
3280af22 2437 if (PL_restartop) {
febb3a6d 2438 PL_restartjmpenv = NULL;
533c011a 2439 PL_op = PL_restartop;
3280af22 2440 PL_restartop = 0;
cea2e8a9 2441 CALLRUNOPS(aTHX);
6224f72b 2442 }
3280af22
NIS
2443 else if (PL_main_start) {
2444 CvDEPTH(PL_main_cv) = 1;
533c011a 2445 PL_op = PL_main_start;
cea2e8a9 2446 CALLRUNOPS(aTHX);
6224f72b 2447 }
f6b3007c 2448 my_exit(0);
118e2215 2449 assert(0); /* NOTREACHED */
6224f72b
GS
2450}
2451
954c1994 2452/*
ccfc67b7
JH
2453=head1 SV Manipulation Functions
2454
954c1994
GS
2455=for apidoc p||get_sv
2456
64ace3f8 2457Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2458C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2459Perl variable does not exist then it will be created. If C<flags> is zero
2460and the variable does not exist then NULL is returned.
954c1994
GS
2461
2462=cut
2463*/
2464
6224f72b 2465SV*
64ace3f8 2466Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2467{
2468 GV *gv;
7918f24d
NC
2469
2470 PERL_ARGS_ASSERT_GET_SV;
2471
64ace3f8 2472 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2473 if (gv)
2474 return GvSV(gv);
a0714e2c 2475 return NULL;
6224f72b
GS
2476}
2477
954c1994 2478/*
ccfc67b7
JH
2479=head1 Array Manipulation Functions
2480
954c1994
GS
2481=for apidoc p||get_av
2482
f0b90de1
SF
2483Returns the AV of the specified Perl global or package array with the given
2484name (so it won't work on lexical variables). C<flags> are passed
72d33970 2485to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
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 2488
f0b90de1
SF
2489Perl equivalent: C<@{"$name"}>.
2490
954c1994
GS
2491=cut
2492*/
2493
6224f72b 2494AV*
cbfd0a87 2495Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2496{
cbfd0a87 2497 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2498
2499 PERL_ARGS_ASSERT_GET_AV;
2500
cbfd0a87 2501 if (flags)
6224f72b
GS
2502 return GvAVn(gv);
2503 if (gv)
2504 return GvAV(gv);
7d49f689 2505 return NULL;
6224f72b
GS
2506}
2507
954c1994 2508/*
ccfc67b7
JH
2509=head1 Hash Manipulation Functions
2510
954c1994
GS
2511=for apidoc p||get_hv
2512
6673a63c 2513Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2514C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2515Perl variable does not exist then it will be created. If C<flags> is zero
2516and the variable does not exist then NULL is returned.
954c1994
GS
2517
2518=cut
2519*/
2520
6224f72b 2521HV*
6673a63c 2522Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2523{
6673a63c 2524 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2525
2526 PERL_ARGS_ASSERT_GET_HV;
2527
6673a63c 2528 if (flags)
a0d0e21e
LW
2529 return GvHVn(gv);
2530 if (gv)
2531 return GvHV(gv);
5c284bb0 2532 return NULL;
a0d0e21e
LW
2533}
2534
954c1994 2535/*
ccfc67b7
JH
2536=head1 CV Manipulation Functions
2537
780a5241
NC
2538=for apidoc p||get_cvn_flags
2539
2540Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2541C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2542exist then it will be declared (which has the same effect as saying
2543C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2544then NULL is returned.
2545
954c1994
GS
2546=for apidoc p||get_cv
2547
780a5241 2548Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2549
2550=cut
2551*/
2552
a0d0e21e 2553CV*
780a5241 2554Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2555{
780a5241 2556 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2557
2558 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2559
334dda80
FC
2560 /* XXX this is probably not what they think they're getting.
2561 * It has the same effect as "sub name;", i.e. just a forward
2562 * declaration! */
780a5241 2563 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2564 return newSTUB(gv,0);
780a5241 2565 }
a0d0e21e 2566 if (gv)
8ebc5c01 2567 return GvCVu(gv);
601f1833 2568 return NULL;
a0d0e21e
LW
2569}
2570
2c67934f
NC
2571/* Nothing in core calls this now, but we can't replace it with a macro and
2572 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2573CV*
2574Perl_get_cv(pTHX_ const char *name, I32 flags)
2575{
7918f24d
NC
2576 PERL_ARGS_ASSERT_GET_CV;
2577
780a5241
NC
2578 return get_cvn_flags(name, strlen(name), flags);
2579}
2580
79072805
LW
2581/* Be sure to refetch the stack pointer after calling these routines. */
2582
954c1994 2583/*
ccfc67b7
JH
2584
2585=head1 Callback Functions
2586
954c1994
GS
2587=for apidoc p||call_argv
2588
f0b90de1 2589Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2590with C<argv> (a NULL-terminated array of strings) as arguments. See
2591L<perlcall>.
f0b90de1
SF
2592
2593Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2594
2595=cut
2596*/
2597
a0d0e21e 2598I32
5aaab254 2599Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2600
8ac85365
NIS
2601 /* See G_* flags in cop.h */
2602 /* null terminated arg list */
8990e307 2603{
97aff369 2604 dVAR;
a0d0e21e 2605 dSP;
8990e307 2606
7918f24d
NC
2607 PERL_ARGS_ASSERT_CALL_ARGV;
2608
924508f0 2609 PUSHMARK(SP);
a0d0e21e 2610 if (argv) {
8990e307 2611 while (*argv) {
6e449a3a 2612 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2613 argv++;
2614 }
a0d0e21e 2615 PUTBACK;
8990e307 2616 }
864dbfa3 2617 return call_pv(sub_name, flags);
8990e307
LW
2618}
2619
954c1994
GS
2620/*
2621=for apidoc p||call_pv
2622
2623Performs a callback to the specified Perl sub. See L<perlcall>.
2624
2625=cut
2626*/
2627
a0d0e21e 2628I32
864dbfa3 2629Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2630 /* name of the subroutine */
2631 /* See G_* flags in cop.h */
a0d0e21e 2632{
7918f24d
NC
2633 PERL_ARGS_ASSERT_CALL_PV;
2634
0da0e728 2635 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2636}
2637
954c1994
GS
2638/*
2639=for apidoc p||call_method
2640
2641Performs a callback to the specified Perl method. The blessed object must
2642be on the stack. See L<perlcall>.
2643
2644=cut
2645*/
2646
a0d0e21e 2647I32
864dbfa3 2648Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2649 /* name of the subroutine */
2650 /* See G_* flags in cop.h */
a0d0e21e 2651{
46ca9bac 2652 STRLEN len;
c106c2be 2653 SV* sv;
7918f24d
NC
2654 PERL_ARGS_ASSERT_CALL_METHOD;
2655
46ca9bac 2656 len = strlen(methname);
c106c2be
RZ
2657 sv = flags & G_METHOD_NAMED
2658 ? sv_2mortal(newSVpvn_share(methname, len,0))
2659 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2660
c106c2be 2661 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2662}
2663
2664/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2665/*
2666=for apidoc p||call_sv
2667
2668Performs a callback to the Perl sub whose name is in the SV. See
2669L<perlcall>.
2670
2671=cut
2672*/
2673
a0d0e21e 2674I32
001d637e 2675Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2676 /* See G_* flags in cop.h */
a0d0e21e 2677{
27da23d5 2678 dVAR; dSP;
a0d0e21e 2679 LOGOP myop; /* fake syntax tree node */
c106c2be
RZ
2680 UNOP method_unop;
2681 SVOP method_svop;
aa689395 2682 I32 oldmark;
8ea43dc8 2683 VOL I32 retval = 0;
a0d0e21e 2684 I32 oldscope;
54310121 2685 bool oldcatch = CATCH_GET;
6224f72b 2686 int ret;
c4420975 2687 OP* const oldop = PL_op;
db36c5a1 2688 dJMPENV;
1e422769 2689
7918f24d
NC
2690 PERL_ARGS_ASSERT_CALL_SV;
2691
a0d0e21e
LW
2692 if (flags & G_DISCARD) {
2693 ENTER;
2694 SAVETMPS;
2695 }
2f8edad0
NC
2696 if (!(flags & G_WANT)) {
2697 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2698 */
2699 flags |= G_SCALAR;
2700 }
a0d0e21e 2701
aa689395 2702 Zero(&myop, 1, LOGOP);
f51d4af5 2703 if (!(flags & G_NOARGS))
aa689395 2704 myop.op_flags |= OPf_STACKED;
4f911530 2705 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2706 SAVEOP();
533c011a 2707 PL_op = (OP*)&myop;
aa689395 2708
3280af22 2709 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2710 if (!(flags & G_METHOD_NAMED))
2711 *++PL_stack_sp = sv;
aa689395 2712 oldmark = TOPMARK;
3280af22 2713 oldscope = PL_scopestack_ix;
a0d0e21e 2714
3280af22 2715 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2716 /* Handle first BEGIN of -d. */
3280af22 2717 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2718 /* Try harder, since this may have been a sighandler, thus
2719 * curstash may be meaningless. */
ea726b52 2720 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2721 && !(flags & G_NODEBUG))
5ff48db8 2722 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2723
c106c2be
RZ
2724 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2725 if ( flags & G_METHOD_NAMED ) {
2726 Zero(&method_svop, 1, SVOP);
2727 method_svop.op_next = (OP*)&myop;
2728 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2729 method_svop.op_type = OP_METHOD_NAMED;
2730 method_svop.op_sv = sv;
2731 PL_op = (OP*)&method_svop;
2732 } else {
2733 Zero(&method_unop, 1, UNOP);
2734 method_unop.op_next = (OP*)&myop;
2735 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2736 method_unop.op_type = OP_METHOD;
2737 PL_op = (OP*)&method_unop;
2738 }
2739 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2740 myop.op_type = OP_ENTERSUB;
2741
968b3946
GS
2742 }
2743
312caa8e 2744 if (!(flags & G_EVAL)) {
0cdb2077 2745 CATCH_SET(TRUE);
d6f07c05 2746 CALL_BODY_SUB((OP*)&myop);
312caa8e 2747 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2748 CATCH_SET(oldcatch);
312caa8e
CS
2749 }
2750 else {
d78bda3d 2751 myop.op_other = (OP*)&myop;
3280af22 2752 PL_markstack_ptr--;
edb2152a 2753 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2754 PL_markstack_ptr++;
a0d0e21e 2755
14dd3ad8 2756 JMPENV_PUSH(ret);
edb2152a 2757
6224f72b
GS
2758 switch (ret) {
2759 case 0:
14dd3ad8 2760 redo_body:
d6f07c05 2761 CALL_BODY_SUB((OP*)&myop);
312caa8e 2762 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2763 if (!(flags & G_KEEPERR)) {
ab69dbc2 2764 CLEAR_ERRSV();
8433848b 2765 }
a0d0e21e 2766 break;
6224f72b 2767 case 1:
f86702cc 2768 STATUS_ALL_FAILURE;
a0d0e21e 2769 /* FALL THROUGH */
6224f72b 2770 case 2:
a0d0e21e 2771 /* my_exit() was called */
03d9f026 2772 SET_CURSTASH(PL_defstash);
a0d0e21e 2773 FREETMPS;
14dd3ad8 2774 JMPENV_POP;
f86702cc 2775 my_exit_jump();
118e2215 2776 assert(0); /* NOTREACHED */
6224f72b 2777 case 3:
3280af22 2778 if (PL_restartop) {
febb3a6d 2779 PL_restartjmpenv = NULL;
533c011a 2780 PL_op = PL_restartop;
3280af22 2781 PL_restartop = 0;
312caa8e 2782 goto redo_body;
a0d0e21e 2783 }
3280af22 2784 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2785 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2786 retval = 0;
2787 else {
2788 retval = 1;
3280af22 2789 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2790 }
312caa8e 2791 break;
a0d0e21e 2792 }
a0d0e21e 2793
edb2152a
NC
2794 if (PL_scopestack_ix > oldscope)
2795 delete_eval_scope();
14dd3ad8 2796 JMPENV_POP;
a0d0e21e 2797 }
1e422769 2798
a0d0e21e 2799 if (flags & G_DISCARD) {
3280af22 2800 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2801 retval = 0;
2802 FREETMPS;
2803 LEAVE;
2804 }
533c011a 2805 PL_op = oldop;
a0d0e21e
LW
2806 return retval;
2807}
2808
6e72f9df 2809/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2810
954c1994
GS
2811/*
2812=for apidoc p||eval_sv
2813
72d33970
FC
2814Tells Perl to C<eval> the string in the SV. It supports the same flags
2815as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2816
2817=cut
2818*/
2819
a0d0e21e 2820I32
864dbfa3 2821Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2822
8ac85365 2823 /* See G_* flags in cop.h */
a0d0e21e 2824{
97aff369 2825 dVAR;
924508f0 2826 dSP;
a0d0e21e 2827 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2828 VOL I32 oldmark = SP - PL_stack_base;
2829 VOL I32 retval = 0;
6224f72b 2830 int ret;
c4420975 2831 OP* const oldop = PL_op;
db36c5a1 2832 dJMPENV;
84902520 2833
7918f24d
NC
2834 PERL_ARGS_ASSERT_EVAL_SV;
2835
4633a7c4
LW
2836 if (flags & G_DISCARD) {
2837 ENTER;
2838 SAVETMPS;
2839 }
2840
462e5cf6 2841 SAVEOP();
533c011a 2842 PL_op = (OP*)&myop;
5ff48db8 2843 Zero(&myop, 1, UNOP);
3280af22
NIS
2844 EXTEND(PL_stack_sp, 1);
2845 *++PL_stack_sp = sv;
79072805 2846
4633a7c4
LW
2847 if (!(flags & G_NOARGS))
2848 myop.op_flags = OPf_STACKED;
6e72f9df 2849 myop.op_type = OP_ENTEREVAL;
4f911530 2850 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2851 if (flags & G_KEEPERR)
2852 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2853
2854 if (flags & G_RE_REPARSING)
2855 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2856
dedbcade
DM
2857 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2858 * before a PUSHEVAL, which corrupts the stack after a croak */
2859 TAINT_PROPER("eval_sv()");
2860
14dd3ad8 2861 JMPENV_PUSH(ret);
6224f72b
GS
2862 switch (ret) {
2863 case 0:
14dd3ad8 2864 redo_body:
2ba65d5f
DM
2865 if (PL_op == (OP*)(&myop)) {
2866 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2867 if (!PL_op)
2868 goto fail; /* failed in compilation */
2869 }
4aca2f62 2870 CALLRUNOPS(aTHX);
312caa8e 2871 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2872 if (!(flags & G_KEEPERR)) {
ab69dbc2 2873 CLEAR_ERRSV();
8433848b 2874 }
4633a7c4 2875 break;
6224f72b 2876 case 1:
f86702cc 2877 STATUS_ALL_FAILURE;
4633a7c4 2878 /* FALL THROUGH */
6224f72b 2879 case 2:
4633a7c4 2880 /* my_exit() was called */
03d9f026 2881 SET_CURSTASH(PL_defstash);
4633a7c4 2882 FREETMPS;
14dd3ad8 2883 JMPENV_POP;
f86702cc 2884 my_exit_jump();
118e2215 2885 assert(0); /* NOTREACHED */
6224f72b 2886 case 3:
3280af22 2887 if (PL_restartop) {
febb3a6d 2888 PL_restartjmpenv = NULL;
533c011a 2889 PL_op = PL_restartop;
3280af22 2890 PL_restartop = 0;
312caa8e 2891 goto redo_body;
4633a7c4 2892 }
4aca2f62 2893 fail:
3280af22 2894 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2895 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2896 retval = 0;
2897 else {
2898 retval = 1;
3280af22 2899 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2900 }
312caa8e 2901 break;
4633a7c4
LW
2902 }
2903
14dd3ad8 2904 JMPENV_POP;
4633a7c4 2905 if (flags & G_DISCARD) {
3280af22 2906 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2907 retval = 0;
2908 FREETMPS;
2909 LEAVE;
2910 }
533c011a 2911 PL_op = oldop;
4633a7c4
LW
2912 return retval;
2913}
2914
954c1994
GS
2915/*
2916=for apidoc p||eval_pv
2917
2918Tells Perl to C<eval> the given string and return an SV* result.
2919
2920=cut
2921*/
2922
137443ea 2923SV*
864dbfa3 2924Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2925{
97aff369 2926 dVAR;
137443ea
PP
2927 SV* sv = newSVpv(p, 0);
2928
7918f24d
NC
2929 PERL_ARGS_ASSERT_EVAL_PV;
2930
864dbfa3 2931 eval_sv(sv, G_SCALAR);
137443ea
PP
2932 SvREFCNT_dec(sv);
2933
ed1786ad
DD
2934 {
2935 dSP;
2936 sv = POPs;
2937 PUTBACK;
2938 }
137443ea 2939
eed484f9
DD
2940 /* just check empty string or undef? */
2941 if (croak_on_error) {
2942 SV * const errsv = ERRSV;
2943 if(SvTRUE_NN(errsv))
2944 /* replace with croak_sv? */
2945 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2946 }
137443ea
PP
2947
2948 return sv;
2949}
2950
4633a7c4
LW
2951/* Require a module. */
2952
954c1994 2953/*
ccfc67b7
JH
2954=head1 Embedding Functions
2955
954c1994
GS
2956=for apidoc p||require_pv
2957
7d3fb230
BS
2958Tells Perl to C<require> the file named by the string argument. It is
2959analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2960implemented that way; consider using load_module instead.
954c1994 2961
7d3fb230 2962=cut */
954c1994 2963
4633a7c4 2964void
864dbfa3 2965Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2966{
97aff369 2967 dVAR;
d3acc0f7 2968 dSP;
97aff369 2969 SV* sv;
7918f24d
NC
2970
2971 PERL_ARGS_ASSERT_REQUIRE_PV;
2972
e788e7d3 2973 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2974 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2975 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2976 POPSTACK;
79072805
LW
2977}
2978
76e3520e 2979STATIC void
b6f82619 2980S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2981{
ab821d7f 2982 /* This message really ought to be max 23 lines.
75c72d73 2983 * Removed -h because the user already knows that option. Others? */
fb73857a 2984
1566c39d
NC
2985 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2986 minimum of 509 character string literals. */
27da23d5 2987 static const char * const usage_msg[] = {
1566c39d
NC
2988" -0[octal] specify record separator (\\0, if no argument)\n"
2989" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2990" -C[number/list] enables the listed Unicode features\n"
2991" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2992" -d[:debugger] run program under debugger\n"
2993" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2994" -e program one line of program (several -e's allowed, omit programfile)\n"
2995" -E program like -e, but enables all optional features\n"
2996" -f don't do $sitelib/sitecustomize.pl at startup\n"
2997" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2998" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2999" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3000" -l[octal] enable line ending processing, specifies line terminator\n"
3001" -[mM][-]module execute \"use/no module...\" before executing program\n"
3002" -n assume \"while (<>) { ... }\" loop around program\n"
3003" -p assume loop like -n but print line also, like sed\n"
3004" -s enable rudimentary parsing for switches after programfile\n"
3005" -S look for programfile using PATH environment variable\n",
3006" -t enable tainting warnings\n"
3007" -T enable tainting checks\n"
3008" -u dump core after parsing program\n"
3009" -U allow unsafe operations\n"
3010" -v print version, patchlevel and license\n"
3011" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3012" -w enable many useful warnings\n"
1566c39d
NC
3013" -W enable all warnings\n"
3014" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3015" -X disable all warnings\n"
3016" \n"
3017"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3018NULL
3019};
27da23d5 3020 const char * const *p = usage_msg;
1566c39d 3021 PerlIO *out = PerlIO_stdout();
fb73857a 3022
1566c39d
NC
3023 PerlIO_printf(out,
3024 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3025 PL_origargv[0]);
fb73857a 3026 while (*p)
1566c39d 3027 PerlIO_puts(out, *p++);
b6f82619 3028 my_exit(0);
4633a7c4
LW
3029}
3030
b4ab917c
DM
3031/* convert a string of -D options (or digits) into an int.
3032 * sets *s to point to the char after the options */
3033
3034#ifdef DEBUGGING
3035int
e1ec3a88 3036Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3037{
27da23d5 3038 static const char * const usage_msgd[] = {
651b8f1a
NC
3039 " Debugging flag values: (see also -d)\n"
3040 " p Tokenizing and parsing (with v, displays parse stack)\n"
3041 " s Stack snapshots (with v, displays all stacks)\n"
3042 " l Context (loop) stack processing\n"
3043 " t Trace execution\n"
3044 " o Method and overloading resolution\n",
3045 " c String/numeric conversions\n"
3046 " P Print profiling info, source file input state\n"
3047 " m Memory and SV allocation\n"
3048 " f Format processing\n"
3049 " r Regular expression parsing and execution\n"
3050 " x Syntax tree dump\n",
3051 " u Tainting checks\n"
3052 " H Hash dump -- usurps values()\n"
3053 " X Scratchpad allocation\n"
3054 " D Cleaning up\n"
56967202 3055 " S Op slab allocation\n"
651b8f1a
NC
3056 " T Tokenising\n"
3057 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3058 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3059 " v Verbose: use in conjunction with other flags\n"
3060 " C Copy On Write\n"
3061 " A Consistency checks on internal structures\n"
3062 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3063 " M trace smart match resolution\n"
3064 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3065 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3066 NULL
3067 };
b4ab917c 3068 int i = 0;
7918f24d
NC
3069
3070 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3071
b4ab917c
DM
3072 if (isALPHA(**s)) {
3073 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3074 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3075
0eb30aeb 3076 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3077 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3078 if (d)
3079 i |= 1 << (d - debopts);
3080 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3081 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3082 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3083 }
3084 }
e6e64d9b 3085 else if (isDIGIT(**s)) {
b4ab917c 3086 i = atoi(*s);
0eb30aeb 3087 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3088 }
ddcf8bc1 3089 else if (givehelp) {
06e869a4 3090 const char *const *p = usage_msgd;
651b8f1a 3091 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3092 }
b4ab917c
DM
3093# ifdef EBCDIC
3094 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3095 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3096 "-Dp not implemented on this platform\n");
3097# endif
3098 return i;
3099}
3100#endif
3101
79072805
LW
3102/* This routine handles any switches that can be given during run */
3103
c7030b81
NC
3104const char *
3105Perl_moreswitches(pTHX_ const char *s)
79072805 3106{
27da23d5 3107 dVAR;
84c133a0 3108 UV rschar;
0544e6df 3109 const char option = *s; /* used to remember option in -m/-M code */
79072805 3110
7918f24d
NC
3111 PERL_ARGS_ASSERT_MORESWITCHES;
3112
79072805
LW
3113 switch (*s) {
3114 case '0':
a863c7d1 3115 {
f2095865 3116 I32 flags = 0;
a3b680e6 3117 STRLEN numlen;
f2095865
JH
3118
3119 SvREFCNT_dec(PL_rs);
3120 if (s[1] == 'x' && s[2]) {
a3b680e6 3121 const char *e = s+=2;
f2095865
JH
3122 U8 *tmps;
3123
a3b680e6
AL
3124 while (*e)
3125 e++;
f2095865
JH
3126 numlen = e - s;
3127 flags = PERL_SCAN_SILENT_ILLDIGIT;
3128 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3129 if (s + numlen < e) {
3130 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3131 numlen = 0;
3132 s--;
3133 }
396482e1 3134 PL_rs = newSVpvs("");
c5661c80 3135 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3136 tmps = (U8*)SvPVX(PL_rs);
3137 uvchr_to_utf8(tmps, rschar);
3138 SvCUR_set(PL_rs, UNISKIP(rschar));
3139 SvUTF8_on(PL_rs);
3140 }
3141 else {
3142 numlen = 4;
3143 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3144 if (rschar & ~((U8)~0))
3145 PL_rs = &PL_sv_undef;
3146 else if (!rschar && numlen >= 2)
396482e1 3147 PL_rs = newSVpvs("");
f2095865
JH
3148 else {
3149 char ch = (char)rschar;
3150 PL_rs = newSVpvn(&ch, 1);
3151 }
3152 }
64ace3f8 3153 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3154 return s + numlen;
a863c7d1 3155 }
46487f74 3156 case 'C':
a05d7ebb 3157 s++;
dd374669 3158 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3159 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3160 PL_utf8cache = -1;
46487f74 3161 return s;
2304df62 3162 case 'F':
5fc691f1 3163 PL_minus_a = TRUE;
3280af22 3164 PL_minus_F = TRUE;
24ffa309 3165 PL_minus_n = TRUE;
ebce5377
RGS
3166 PL_splitstr = ++s;
3167 while (*s && !isSPACE(*s)) ++s;
e49e380e 3168 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3169 return s;
79072805 3170 case 'a':
3280af22 3171 PL_minus_a = TRUE;
24ffa309 3172 PL_minus_n = TRUE;
79072805
LW
3173 s++;
3174 return s;
3175 case 'c':
3280af22 3176 PL_minus_c = TRUE;
79072805
LW
3177 s++;
3178 return s;
3179 case 'd':
f20b2998 3180 forbid_setid('d', FALSE);
4633a7c4 3181 s++;
2cbb2ee1
RGS
3182
3183 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3184 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3185 ++s;
3186 my_setenv("PERL5DB_THREADED", "1");
3187 }
3188
70c94a19
RR
3189 /* The following permits -d:Mod to accepts arguments following an =
3190 in the fashion that -MSome::Mod does. */
3191 if (*s == ':' || *s == '=') {
b19934fb
NC
3192 const char *start;
3193 const char *end;
3194 SV *sv;
3195
3196 if (*++s == '-') {
3197 ++s;
3198 sv = newSVpvs("no Devel::");
3199 } else {
3200 sv = newSVpvs("use Devel::");
3201 }
3202
3203 start = s;
3204 end = s + strlen(s);
f85893a1 3205
b19934fb 3206 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3207 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3208 if (*s != '=')
f85893a1 3209 sv_catpvn(sv, start, end - start);
70c94a19
RR
3210 else {
3211 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3212 /* Don't use NUL as q// delimiter here, this string goes in the
3213 * environment. */
3214 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3215 }
f85893a1 3216 s = end;
184f32ec 3217 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3218 SvREFCNT_dec(sv);
4633a7c4 3219 }
ed094faf 3220 if (!PL_perldb) {
3280af22 3221 PL_perldb = PERLDB_ALL;
a0d0e21e 3222 init_debugger();
ed094faf 3223 }
79072805
LW
3224 return s;
3225 case 'D':
0453d815 3226 {
79072805 3227#ifdef DEBUGGING
f20b2998 3228 forbid_setid('D', FALSE);
b4ab917c 3229 s++;
dd374669 3230 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3231#else /* !DEBUGGING */
0453d815 3232 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3233 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3234 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3235 for (s++; isWORDCHAR(*s); s++) ;
79072805 3236#endif
79072805 3237 return s;
0453d815 3238 }
4633a7c4 3239 case 'h':
b6f82619 3240 usage();
79072805 3241 case 'i':
43c5f42d 3242 Safefree(PL_inplace);
c030f24b
GH
3243#if defined(__CYGWIN__) /* do backup extension automagically */
3244 if (*(s+1) == '\0') {
c86a4f2e 3245 PL_inplace = savepvs(".bak");
c030f24b
GH
3246 return s+1;
3247 }
3248#endif /* __CYGWIN__ */
5ef5d758 3249 {
d4c19fe8 3250 const char * const start = ++s;
5ef5d758
NC
3251 while (*s && !isSPACE(*s))
3252 ++s;
3253
3254 PL_inplace = savepvn(start, s - start);
3255 }
7b8d334a 3256 if (*s) {
5ef5d758 3257 ++s;
7b8d334a 3258 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3259 s++;
7b8d334a 3260 }
fb73857a 3261 return s;
4e49a025 3262 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3263 forbid_setid('I', FALSE);
fb73857a
PP
3264 ++s;
3265 while (*s && isSPACE(*s))
3266 ++s;
3267 if (*s) {
c7030b81 3268 const char *e, *p;
0df16ed7
GS
3269 p = s;
3270 /* ignore trailing spaces (possibly followed by other switches) */
3271 do {
3272 for (e = p; *e && !isSPACE(*e); e++) ;
3273 p = e;
3274 while (isSPACE(*p))
3275 p++;
3276 } while (*p && *p != '-');
55b4bc1c 3277 incpush(s, e-s,
e28f3139 3278 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3279 s = p;
3280 if (*s == '-')
3281 s++;
79072805
LW
3282 }
3283 else
a67e862a 3284 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3285 return s;
79072805 3286 case 'l':
3280af22 3287 PL_minus_l = TRUE;
79072805 3288 s++;
7889fe52
NIS
3289 if (PL_ors_sv) {
3290 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3291 PL_ors_sv = NULL;
7889fe52 3292 }
79072805 3293 if (isDIGIT(*s)) {
53305cf1 3294 I32 flags = 0;
a3b680e6 3295 STRLEN numlen;
396482e1 3296 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3297 numlen = 3 + (*s == '0');
3298 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3299 s += numlen;
3300 }
3301 else {
8bfdd7d9 3302 if (RsPARA(PL_rs)) {
396482e1 3303 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3304 }
3305 else {
8bfdd7d9 3306 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3307 }
79072805
LW
3308 }
3309 return s;
1a30305b 3310 case 'M':
f20b2998 3311 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3312 /* FALL THROUGH */
3313 case 'm':
f20b2998 3314 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3315 if (*++s) {
c7030b81 3316 const char *start;
b64cb68c 3317 const char *end;
11343788 3318 SV *sv;
e1ec3a88 3319 const char *use = "use ";
0544e6df 3320 bool colon = FALSE;
a5f75d66 3321 /* -M-foo == 'no foo' */
d0043bd1
NC
3322 /* Leading space on " no " is deliberate, to make both
3323 possibilities the same length. */
3324 if (*s == '-') { use = " no "; ++s; }
3325 sv = newSVpvn(use,4);
a5f75d66 3326 start = s;
1a30305b 3327 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3328 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3329 if( *s++ == ':' ) {
3330 if( *s == ':' )
3331 s++;
3332 else
3333 colon = TRUE;
3334 }
3335 }
3336 if (s == start)
3337 Perl_croak(aTHX_ "Module name required with -%c option",
3338 option);
3339 if (colon)
3340 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3341 "contains single ':'",
63da6837 3342 (int)(s - start), start, option);
b64cb68c 3343 end = s + strlen(s);
c07a80fd 3344 if (*s != '=') {
b64cb68c 3345 sv_catpvn(sv, start, end - start);
0544e6df 3346 if (option == 'm') {
c07a80fd 3347 if (*s != '\0')
cea2e8a9 3348 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3349 sv_catpvs( sv, " ()");
c07a80fd
PP
3350 }
3351 } else {
11343788 3352 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3353 /* Use NUL as q''-delimiter. */
3354 sv_catpvs(sv, " split(/,/,q\0");
3355 ++s;
3356 sv_catpvn(sv, s, end - s);
396482e1 3357 sv_catpvs(sv, "\0)");
c07a80fd 3358 }
b64cb68c 3359 s = end;
29a861e7 3360 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3361 }
3362 else
0544e6df 3363 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3364 return s;
79072805 3365 case 'n':
3280af22 3366 PL_minus_n = TRUE;
79072805
LW
3367 s++;
3368 return s;
3369 case 'p':
3280af22 3370 PL_minus_p = TRUE;
79072805
LW
3371 s++;
3372 return s;
3373 case 's':
f20b2998 3374 forbid_setid('s', FALSE);
3280af22 3375 PL_doswitches = TRUE;
79072805
LW
3376 s++;
3377 return s;
6537fe72 3378 case 't':
27a6968b 3379 case 'T':
284167a5
SM
3380#if SILENT_NO_TAINT_SUPPORT
3381 /* silently ignore */
3382#elif NO_TAINT_SUPPORT
3231f579 3383 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3384 "Cowardly refusing to run with -t or -T flags");
3385#else
3386 if (!TAINTING_get)
27a6968b 3387 TOO_LATE_FOR(*s);
284167a5 3388#endif
6537fe72 3389 s++;
463ee0b2 3390 return s;
79072805 3391 case 'u':
3280af22 3392 PL_do_undump = TRUE;
79072805
LW
3393 s++;
3394 return s;
3395 case 'U':
3280af22 3396 PL_unsafe = TRUE;
79072805
LW
3397 s++;
3398 return s;
3399 case 'v':
c4bc78d9
NC
3400 minus_v();
3401 case 'w':
3402 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3403 PL_dowarn |= G_WARN_ON;
3404 }
3405 s++;
3406 return s;
3407 case 'W':
3408 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3409 if (!specialWARN(PL_compiling.cop_warnings))
3410 PerlMemShared_free(PL_compiling.cop_warnings);
3411 PL_compiling.cop_warnings = pWARN_ALL ;
3412 s++;
3413 return s;
3414 case 'X':
3415 PL_dowarn = G_WARN_ALL_OFF;
3416 if (!specialWARN(PL_compiling.cop_warnings))
3417 PerlMemShared_free(PL_compiling.cop_warnings);
3418 PL_compiling.cop_warnings = pWARN_NONE ;
3419 s++;
3420 return s;
3421 case '*':
3422 case ' ':
3423 while( *s == ' ' )
3424 ++s;
3425 if (s[0] == '-') /* Additional switches on #! line. */
3426 return s+1;
3427 break;
3428 case '-':
3429 case 0:
3430#if defined(WIN32) || !defined(PERL_STRICT_CR)
3431 case '\r':
3432#endif
3433 case '\n':
3434 case '\t':
3435 break;
3436#ifdef ALTERNATE_SHEBANG
3437 case 'S': /* OS/2 needs -S on "extproc" line. */
3438 break;
3439#endif
4bb78d63
CB
3440 case 'e': case 'f': case 'x': case 'E':
3441#ifndef ALTERNATE_SHEBANG
3442 case 'S':
3443#endif
3444 case 'V':
c4bc78d9 3445 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3446 default:
3447 Perl_croak(aTHX_
3448 "Unrecognized switch: -%.1s (-h will show valid options)",s
3449 );
c4bc78d9
NC
3450 }
3451 return NULL;
3452}
3453
3454
3455STATIC void
3456S_minus_v(pTHX)
3457{
fc3381af 3458 PerlIO * PIO_stdout;
46807d8e 3459 {
709aee94
DD
3460 const char * const level_str = "v" PERL_VERSION_STRING;
3461 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3462#ifdef PERL_PATCHNUM
709aee94 3463 SV* level;
23d483e2 3464# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3465 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3466# else
709aee94 3467 static const char num [] = PERL_PATCHNUM;
23d483e2 3468# endif
fc3381af 3469 {
709aee94
DD
3470 const STRLEN num_len = sizeof(num)-1;
3471 /* A very advanced compiler would fold away the strnEQ
3472 and this whole conditional, but most (all?) won't do it.
3473 SV level could also be replaced by with preprocessor
3474 catenation.
3475 */
3476 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3477 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3478 of the interp so it might contain format characters
3479 */
3480 level = newSVpvn(num, num_len);
fc3381af 3481 } else {
709aee94 3482 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3483 }
46807d8e 3484 }
709aee94
DD
3485#else
3486 SV* level = newSVpvn(level_str, level_len);
3487#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3488 PIO_stdout = PerlIO_stdout();
3489 PerlIO_printf(PIO_stdout,
ded326e4
DG
3490 "\nThis is perl " STRINGIFY(PERL_REVISION)
3491 ", version " STRINGIFY(PERL_VERSION)
3492 ", subversion " STRINGIFY(PERL_SUBVERSION)
3493 " (%"SVf") built for " ARCHNAME, level
3494 );
709aee94 3495 SvREFCNT_dec_NN(level);
46807d8e 3496 }
fb73857a
PP
3497#if defined(LOCAL_PATCH_COUNT)
3498 if (LOCAL_PATCH_COUNT > 0)
fc3381af 3499 PerlIO_printf(PIO_stdout,
b0e47665
GS
3500 "\n(with %d registered patch%s, "
3501 "see perl -V for more detail)",
bb7a0f54 3502 LOCAL_PATCH_COUNT,
b0e47665 3503 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3504#endif
1a30305b 3505
fc3381af 3506 PerlIO_printf(PIO_stdout,
fb435042 3507 "\n\nCopyright 1987-2014, Larry Wall\n");
79072805 3508#ifdef MSDOS