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Initial work for pod/erldelta for 5.23.5
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CommitLineData
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"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2aa47728 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
42# ifdef I_SYSUIO
43# include <sys/uio.h>
44# endif
45
46union control_un {
47 struct cmsghdr cm;
48 char control[CMSG_SPACE(sizeof(int))];
49};
50
2aa47728
NC
51#endif
52
5311654c
JH
53#ifndef HZ
54# ifdef CLK_TCK
55# define HZ CLK_TCK
56# else
57# define HZ 60
58# endif
59#endif
60
7114a2d2 61#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 62char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL
73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC
87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC
90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
71ad1b0c 95 HINTS_REFCNT_INIT;
e6827a76 96 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
97 MUTEX_INIT(&PL_my_ctx_mutex);
98# endif
e6827a76 99 }
c0bce9aa
NC
100#if defined(USE_ITHREADS)
101 else
102#else
103 /* This always happens for non-ithreads */
104#endif
105 {
e6827a76
NC
106 PERL_SET_THX(my_perl);
107 }
108}
06d86050 109
cbec8ebe
DM
110
111/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
112
113void
114Perl_sys_init(int* argc, char*** argv)
115{
4fc0badb 116 dVAR;
7918f24d
NC
117
118 PERL_ARGS_ASSERT_SYS_INIT;
119
cbec8ebe
DM
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
123}
124
125void
126Perl_sys_init3(int* argc, char*** argv, char*** env)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT3;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
136}
137
138void
88772978 139Perl_sys_term(void)
cbec8ebe 140{
4fc0badb 141 dVAR;
bf81751b
DM
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
144 }
cbec8ebe
DM
145}
146
147
32e30700
GS
148#ifdef PERL_IMPLICIT_SYS
149PerlInterpreter *
7766f137
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150perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
155{
156 PerlInterpreter *my_perl;
7918f24d
NC
157
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
159
9f653bb5 160 /* Newx() needs interpreter, so call malloc() instead */
32e30700 161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 162 S_init_tls_and_interp(my_perl);
32e30700
GS
163 Zero(my_perl, 1, PerlInterpreter);
164 PL_Mem = ipM;
7766f137
GS
165 PL_MemShared = ipMS;
166 PL_MemParse = ipMP;
32e30700
GS
167 PL_Env = ipE;
168 PL_StdIO = ipStd;
169 PL_LIO = ipLIO;
170 PL_Dir = ipD;
171 PL_Sock = ipS;
172 PL_Proc = ipP;
7cb608b5 173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 174
32e30700
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175 return my_perl;
176}
177#else
954c1994
GS
178
179/*
ccfc67b7
JH
180=head1 Embedding Functions
181
954c1994
GS
182=for apidoc perl_alloc
183
184Allocates a new Perl interpreter. See L<perlembed>.
185
186=cut
187*/
188
93a17b20 189PerlInterpreter *
cea2e8a9 190perl_alloc(void)
79072805 191{
cea2e8a9 192 PerlInterpreter *my_perl;
79072805 193
9f653bb5 194 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 196
e6827a76 197 S_init_tls_and_interp(my_perl);
7cb608b5 198#ifndef PERL_TRACK_MEMPOOL
07409e01 199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
200#else
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
203 return my_perl;
204#endif
79072805 205}
32e30700 206#endif /* PERL_IMPLICIT_SYS */
79072805 207
954c1994
GS
208/*
209=for apidoc perl_construct
210
211Initializes a new Perl interpreter. See L<perlembed>.
212
213=cut
214*/
215
79072805 216void
0cb96387 217perl_construct(pTHXx)
79072805 218{
27da23d5 219 dVAR;
7918f24d
NC
220
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
222
8990e307 223#ifdef MULTIPLICITY
54aff467 224 init_interp();
ac27b0f5 225 PL_perl_destruct_level = 1;
54aff467 226#else
7918f24d 227 PERL_UNUSED_ARG(my_perl);
54aff467
GS
228 if (PL_perl_destruct_level > 0)
229 init_interp();
230#endif
34caed6d
DM
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
75d476e2
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233#ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
235#endif
236
0d96b528 237 init_constants();
34caed6d
DM
238
239 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
241
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 243#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 244 PL_pidstatus = newHV();
ca0c25f6 245#endif
79072805 246
396482e1 247 PL_rs = newSVpvs("\n");
dc92893f 248
cea2e8a9 249 init_stacks();
79072805 250
748a9306 251 init_ids();
a5f75d66 252
312caa8e 253 JMPENV_BOOTSTRAP;
f86702cc
PP
254 STATUS_ALL_SUCCESS;
255
0672f40e 256 init_i18nl10n(1);
0b5b802d 257
ab821d7f 258#if defined(LOCAL_PATCH_COUNT)
3280af22 259 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
260#endif
261
52853b95
GS
262#ifdef HAVE_INTERP_INTERN
263 sys_intern_init();
264#endif
265
3a1ee7e8 266 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 267
3280af22
NIS
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 270 PL_errors = newSVpvs("");
76f68e9b
MHM
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 274#ifdef USE_ITHREADS
402d2eb1
NC
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 278 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 280#endif
e5dd39fc 281#ifdef USE_REENTRANT_API
59bd0823 282 Perl_reentrant_init(aTHX);
e5dd39fc 283#endif
7dc86639
YO
284#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
290 *
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
295 }
296#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
297
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
301 PL_strtab = newHV();
302
3d47000e
AB
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
305
a38ab475
RZ
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
307
2f42fcb0
JH
308#ifndef PERL_MICRO
309# ifdef USE_ENVIRON_ARRAY
0631ea03 310 PL_origenviron = environ;
2f42fcb0 311# endif
0631ea03
AB
312#endif
313
5311654c 314 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 315 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
b6c36746 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB
324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 327
27da23d5
JH
328#ifdef HAS_MMAP
329 if (!PL_mmap_page_size) {
330#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
331 {
332 SETERRNO(0, SS_NORMAL);
333# ifdef _SC_PAGESIZE
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
335# else
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
337# endif
338 if ((long) PL_mmap_page_size < 0) {
339 if (errno) {
44f8325f 340 SV * const error = ERRSV;
d4c19fe8 341 SvUPGRADE(error, SVt_PV);
0510663f 342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
343 }
344 else
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
346 }
347 }
348#else
349# ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
351# else
352# if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
354# endif
355# endif
356#endif
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
360 }
361#endif /* HAS_MMAP */
362
363#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
368#endif
369
7d113631
NC
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
371
a3e6e81e 372 PL_registered_mros = newHV();
9e169432
NC
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
a3e6e81e 375
7b8dd5f4
KW
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 392 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
393 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
394 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
7b8dd5f4 395
8990e307 396 ENTER;
79072805
LW
397}
398
954c1994 399/*
62375a60
NIS
400=for apidoc nothreadhook
401
402Stub that provides thread hook for perl_destruct when there are
403no threads.
404
405=cut
406*/
407
408int
4e9e3734 409Perl_nothreadhook(pTHX)
62375a60 410{
96a5add6 411 PERL_UNUSED_CONTEXT;
62375a60
NIS
412 return 0;
413}
414
41e4abd8
NC
415#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
416void
417Perl_dump_sv_child(pTHX_ SV *sv)
418{
419 ssize_t got;
bf357333
NC
420 const int sock = PL_dumper_fd;
421 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
422 union control_un control;
423 struct msghdr msg;
808ad2d0 424 struct iovec vec[2];
bf357333 425 struct cmsghdr *cmptr;
808ad2d0
NC
426 int returned_errno;
427 unsigned char buffer[256];
41e4abd8 428
7918f24d
NC
429 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
430
bf357333 431 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
432 return;
433
434 PerlIO_flush(Perl_debug_log);
435
bf357333
NC
436 /* All these shenanigans are to pass a file descriptor over to our child for
437 it to dump out to. We can't let it hold open the file descriptor when it
438 forks, as the file descriptor it will dump to can turn out to be one end
439 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 440 be open, the wait would be forever.) */
bf357333
NC
441
442 msg.msg_control = control.control;
443 msg.msg_controllen = sizeof(control.control);
444 /* We're a connected socket so we don't need a destination */
445 msg.msg_name = NULL;
446 msg.msg_namelen = 0;
447 msg.msg_iov = vec;
808ad2d0 448 msg.msg_iovlen = 1;
bf357333
NC
449
450 cmptr = CMSG_FIRSTHDR(&msg);
451 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
452 cmptr->cmsg_level = SOL_SOCKET;
453 cmptr->cmsg_type = SCM_RIGHTS;
454 *((int *)CMSG_DATA(cmptr)) = 1;
455
456 vec[0].iov_base = (void*)&sv;
457 vec[0].iov_len = sizeof(sv);
458 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
459
460 if(got < 0) {
bf357333 461 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
462 abort();
463 }
bf357333
NC
464 if(got < sizeof(sv)) {
465 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
466 abort();
467 }
468
808ad2d0
NC
469 /* Return protocol is
470 int: errno value
471 unsigned char: length of location string (0 for empty)
472 unsigned char*: string (not terminated)
473 */
474 vec[0].iov_base = (void*)&returned_errno;
475 vec[0].iov_len = sizeof(returned_errno);
476 vec[1].iov_base = buffer;
477 vec[1].iov_len = 1;
478
479 got = readv(sock, vec, 2);
41e4abd8
NC
480
481 if(got < 0) {
482 perror("Debug leaking scalars parent read failed");
808ad2d0 483 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
484 abort();
485 }
808ad2d0 486 if(got < sizeof(returned_errno) + 1) {
41e4abd8 487 perror("Debug leaking scalars parent short read");
808ad2d0 488 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
489 abort();
490 }
491
808ad2d0
NC
492 if (*buffer) {
493 got = read(sock, buffer + 1, *buffer);
494 if(got < 0) {
495 perror("Debug leaking scalars parent read 2 failed");
496 PerlIO_flush(PerlIO_stderr());
497 abort();
498 }
499
500 if(got < *buffer) {
501 perror("Debug leaking scalars parent short read 2");
502 PerlIO_flush(PerlIO_stderr());
503 abort();
504 }
505 }
506
507 if (returned_errno || *buffer) {
508 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
509 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 510 returned_errno, Strerror(returned_errno));
41e4abd8
NC
511 }
512}
513#endif
514
62375a60 515/*
954c1994
GS
516=for apidoc perl_destruct
517
518Shuts down a Perl interpreter. See L<perlembed>.
519
520=cut
521*/
522
31d77e54 523int
0cb96387 524perl_destruct(pTHXx)
79072805 525{
27da23d5 526 dVAR;
be2ea8ed 527 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 528 HV *hv;
2aa47728 529#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
530 pid_t child;
531#endif
9c0b6888 532 int i;
8990e307 533
7918f24d
NC
534 PERL_ARGS_ASSERT_PERL_DESTRUCT;
535#ifndef MULTIPLICITY
ed6c66dd 536 PERL_UNUSED_ARG(my_perl);
7918f24d 537#endif
9d4ba2ae 538
3d22c4f0
GG
539 assert(PL_scopestack_ix == 1);
540
7766f137
GS
541 /* wait for all pseudo-forked children to finish */
542 PERL_WAIT_FOR_CHILDREN;
543
3280af22 544 destruct_level = PL_perl_destruct_level;
36e77d41 545#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 546 {
9d4ba2ae
AL
547 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
548 if (s) {
96e440d2
JH
549 int i;
550 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
551 i = -1;
552 } else {
22ff3130
HS
553 UV uv;
554 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
555 i = (int)uv;
556 else
557 i = 0;
96e440d2 558 }
36e77d41
DD
559#ifdef DEBUGGING
560 if (destruct_level < i) destruct_level = i;
561#endif
562#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
563 /* RT #114496, for perl_free */
564 PL_perl_destruct_level = i;
36e77d41 565#endif
5f05dabc 566 }
4633a7c4
LW
567 }
568#endif
569
27da23d5 570 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
571 dJMPENV;
572 int x = 0;
573
574 JMPENV_PUSH(x);
1b6737cc 575 PERL_UNUSED_VAR(x);
9ebf26ad 576 if (PL_endav && !PL_minus_c) {
ca7b837b 577 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 578 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 579 }
f3faeb53 580 JMPENV_POP;
26f423df 581 }
f3faeb53 582 LEAVE;
a0d0e21e 583 FREETMPS;
3d22c4f0 584 assert(PL_scopestack_ix == 0);
a0d0e21e 585
e00b64d4 586 /* Need to flush since END blocks can produce output */
f13a2bc0 587 my_fflush_all();
e00b64d4 588
75d476e2
SM
589#ifdef PERL_TRACE_OPS
590 /* If we traced all Perl OP usage, report and clean up */
591 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
592 for (i = 0; i <= OP_max; ++i) {
593 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
594 PL_op_exec_cnt[i] = 0;
595 }
596 /* Utility slot for easily doing little tracing experiments in the runloop: */
597 if (PL_op_exec_cnt[OP_max+1] != 0)
598 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
599 PerlIO_printf(Perl_debug_log, "\n");
600#endif
601
602
16c91539 603 if (PL_threadhook(aTHX)) {
62375a60 604 /* Threads hook has vetoed further cleanup */
c301d606 605 PL_veto_cleanup = TRUE;
37038d91 606 return STATUS_EXIT;
62375a60
NIS
607 }
608
2aa47728
NC
609#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
610 if (destruct_level != 0) {
611 /* Fork here to create a child. Our child's job is to preserve the
612 state of scalars prior to destruction, so that we can instruct it
613 to dump any scalars that we later find have leaked.
614 There's no subtlety in this code - it assumes POSIX, and it doesn't
615 fail gracefully */
616 int fd[2];
617
618 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
619 perror("Debug leaking scalars socketpair failed");
620 abort();
621 }
622
623 child = fork();
624 if(child == -1) {
625 perror("Debug leaking scalars fork failed");
626 abort();
627 }
628 if (!child) {
629 /* We are the child */
3125a5a4
NC
630 const int sock = fd[1];
631 const int debug_fd = PerlIO_fileno(Perl_debug_log);
632 int f;
808ad2d0
NC
633 const char *where;
634 /* Our success message is an integer 0, and a char 0 */
b61433a9 635 static const char success[sizeof(int) + 1] = {0};
3125a5a4 636
2aa47728 637 close(fd[0]);
2aa47728 638
3125a5a4
NC
639 /* We need to close all other file descriptors otherwise we end up
640 with interesting hangs, where the parent closes its end of a
641 pipe, and sits waiting for (another) child to terminate. Only
642 that child never terminates, because it never gets EOF, because
bf357333
NC
643 we also have the far end of the pipe open. We even need to
644 close the debugging fd, because sometimes it happens to be one
645 end of a pipe, and a process is waiting on the other end for
646 EOF. Normally it would be closed at some point earlier in
647 destruction, but if we happen to cause the pipe to remain open,
648 EOF never occurs, and we get an infinite hang. Hence all the
649 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
650
651 f = sysconf(_SC_OPEN_MAX);
652 if(f < 0) {
808ad2d0
NC
653 where = "sysconf failed";
654 goto abort;
3125a5a4
NC
655 }
656 while (f--) {
657 if (f == sock)
658 continue;
3125a5a4
NC
659 close(f);
660 }
661
2aa47728
NC
662 while (1) {
663 SV *target;
bf357333
NC
664 union control_un control;
665 struct msghdr msg;
666 struct iovec vec[1];
667 struct cmsghdr *cmptr;
668 ssize_t got;
669 int got_fd;
670
671 msg.msg_control = control.control;
672 msg.msg_controllen = sizeof(control.control);
673 /* We're a connected socket so we don't need a source */
674 msg.msg_name = NULL;
675 msg.msg_namelen = 0;
676 msg.msg_iov = vec;
c3caa5c3 677 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
678
679 vec[0].iov_base = (void*)&target;
680 vec[0].iov_len = sizeof(target);
681
682 got = recvmsg(sock, &msg, 0);
2aa47728
NC
683
684 if(got == 0)
685 break;
686 if(got < 0) {
808ad2d0
NC
687 where = "recv failed";
688 goto abort;
2aa47728
NC
689 }
690 if(got < sizeof(target)) {
808ad2d0
NC
691 where = "short recv";
692 goto abort;
2aa47728 693 }
bf357333 694
808ad2d0
NC
695 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
696 where = "no cmsg";
697 goto abort;
698 }
699 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
700 where = "wrong cmsg_len";
701 goto abort;
702 }
703 if(cmptr->cmsg_level != SOL_SOCKET) {
704 where = "wrong cmsg_level";
705 goto abort;
706 }
707 if(cmptr->cmsg_type != SCM_RIGHTS) {
708 where = "wrong cmsg_type";
709 goto abort;
710 }
bf357333
NC
711
712 got_fd = *(int*)CMSG_DATA(cmptr);
713 /* For our last little bit of trickery, put the file descriptor
714 back into Perl_debug_log, as if we never actually closed it
715 */
808ad2d0
NC
716 if(got_fd != debug_fd) {
717 if (dup2(got_fd, debug_fd) == -1) {
718 where = "dup2";
719 goto abort;
720 }
721 }
2aa47728 722 sv_dump(target);
bf357333 723
2aa47728
NC
724 PerlIO_flush(Perl_debug_log);
725
808ad2d0 726 got = write(sock, &success, sizeof(success));
2aa47728
NC
727
728 if(got < 0) {
808ad2d0
NC
729 where = "write failed";
730 goto abort;
2aa47728 731 }
808ad2d0
NC
732 if(got < sizeof(success)) {
733 where = "short write";
734 goto abort;
2aa47728
NC
735 }
736 }
737 _exit(0);
808ad2d0
NC
738 abort:
739 {
740 int send_errno = errno;
741 unsigned char length = (unsigned char) strlen(where);
742 struct iovec failure[3] = {
743 {(void*)&send_errno, sizeof(send_errno)},
744 {&length, 1},
745 {(void*)where, length}
746 };
747 int got = writev(sock, failure, 3);
748 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
749 in the parent if we try to read from the socketpair after the
750 child has exited, even if there was data to read.
751 So sleep a bit to give the parent a fighting chance of
752 reading the data. */
753 sleep(2);
754 _exit((got == -1) ? errno : 0);
755 }
bf357333 756 /* End of child. */
2aa47728 757 }
41e4abd8 758 PL_dumper_fd = fd[0];
2aa47728
NC
759 close(fd[1]);
760 }
761#endif
762
ff0cee69
PP
763 /* We must account for everything. */
764
765 /* Destroy the main CV and syntax tree */
37e77c23
FC
766 /* Set PL_curcop now, because destroying ops can cause new SVs
767 to be generated in Perl_pad_swipe, and when running with
768 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
769 op from which the filename structure member is copied. */
17fbfdf6 770 PL_curcop = &PL_compiling;
3280af22 771 if (PL_main_root) {
4e380990
DM
772 /* ensure comppad/curpad to refer to main's pad */
773 if (CvPADLIST(PL_main_cv)) {
774 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 775 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 776 }
3280af22 777 op_free(PL_main_root);
5f66b61c 778 PL_main_root = NULL;
a0d0e21e 779 }
5f66b61c 780 PL_main_start = NULL;
aac9d523
DM
781 /* note that PL_main_cv isn't usually actually freed at this point,
782 * due to the CvOUTSIDE refs from subs compiled within it. It will
783 * get freed once all the subs are freed in sv_clean_all(), for
784 * destruct_level > 0 */
3280af22 785 SvREFCNT_dec(PL_main_cv);
601f1833 786 PL_main_cv = NULL;
ca7b837b 787 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 788
13621cfb
NIS
789 /* Tell PerlIO we are about to tear things apart in case
790 we have layers which are using resources that should
791 be cleaned up now.
792 */
793
794 PerlIO_destruct(aTHX);
795
ddf23d4a
SM
796 /*
797 * Try to destruct global references. We do this first so that the
798 * destructors and destructees still exist. Some sv's might remain.
799 * Non-referenced objects are on their own.
800 */
801 sv_clean_objs();
8990e307 802
5cd24f17 803 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 804 SvREFCNT_dec(PL_warnhook);
a0714e2c 805 PL_warnhook = NULL;
3280af22 806 SvREFCNT_dec(PL_diehook);
a0714e2c 807 PL_diehook = NULL;
5cd24f17 808
4b556e6c 809 /* call exit list functions */
3280af22 810 while (PL_exitlistlen-- > 0)
acfe0abc 811 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 812
3280af22 813 Safefree(PL_exitlist);
4b556e6c 814
1c4916e5
CB
815 PL_exitlist = NULL;
816 PL_exitlistlen = 0;
817
a3e6e81e
NC
818 SvREFCNT_dec(PL_registered_mros);
819
551a8b83 820 /* jettison our possibly duplicated environment */
4b647fb0
DM
821 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
822 * so we certainly shouldn't free it here
823 */
2f42fcb0 824#ifndef PERL_MICRO
4b647fb0 825#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 826 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
827#ifdef USE_ITHREADS
828 /* only main thread can free environ[0] contents */
829 && PL_curinterp == aTHX
830#endif
831 )
832 {
551a8b83
JH
833 I32 i;
834
835 for (i = 0; environ[i]; i++)
4b420006 836 safesysfree(environ[i]);
0631ea03 837
4b420006
JH
838 /* Must use safesysfree() when working with environ. */
839 safesysfree(environ);
551a8b83
JH
840
841 environ = PL_origenviron;
842 }
843#endif
2f42fcb0 844#endif /* !PERL_MICRO */
551a8b83 845
30985c42
JH
846 if (destruct_level == 0) {
847
848 DEBUG_P(debprofdump());
849
850#if defined(PERLIO_LAYERS)
851 /* No more IO - including error messages ! */
852 PerlIO_cleanup(aTHX);
853#endif
854
855 CopFILE_free(&PL_compiling);
30985c42
JH
856
857 /* The exit() function will do everything that needs doing. */
858 return STATUS_EXIT;
859 }
860
9fa9f06b
KW
861 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
862
5f8cb046
DM
863#ifdef USE_ITHREADS
864 /* the syntax tree is shared between clones
865 * so op_free(PL_main_root) only ReREFCNT_dec's
866 * REGEXPs in the parent interpreter
867 * we need to manually ReREFCNT_dec for the clones
868 */
0547a729
DM
869 {
870 I32 i = AvFILLp(PL_regex_padav);
871 SV **ary = AvARRAY(PL_regex_padav);
872
873 for (; i; i--) {
874 SvREFCNT_dec(ary[i]);
875 ary[i] = &PL_sv_undef;
876 }
877 }
5f8cb046
DM
878#endif
879
0547a729 880
ad64d0ec 881 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
882 PL_stashcache = NULL;
883
5f05dabc
PP
884 /* loosen bonds of global variables */
885
2f9285f8
DM
886 /* XXX can PL_parser still be non-null here? */
887 if(PL_parser && PL_parser->rsfp) {
888 (void)PerlIO_close(PL_parser->rsfp);
889 PL_parser->rsfp = NULL;
8ebc5c01
PP
890 }
891
84386e14
RGS
892 if (PL_minus_F) {
893 Safefree(PL_splitstr);
894 PL_splitstr = NULL;
895 }
896
8ebc5c01 897 /* switches */
3280af22
NIS
898 PL_minus_n = FALSE;
899 PL_minus_p = FALSE;
900 PL_minus_l = FALSE;
901 PL_minus_a = FALSE;
902 PL_minus_F = FALSE;
903 PL_doswitches = FALSE;
599cee73 904 PL_dowarn = G_WARN_OFF;
1a904fc8 905#ifdef PERL_SAWAMPERSAND
d3b97530 906 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 907#endif
3280af22
NIS
908 PL_unsafe = FALSE;
909
910 Safefree(PL_inplace);
bd61b366 911 PL_inplace = NULL;
a7cb1f99 912 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
913
914 if (PL_e_script) {
915 SvREFCNT_dec(PL_e_script);
a0714e2c 916 PL_e_script = NULL;
8ebc5c01
PP
917 }
918
bf9cdc68
RG
919 PL_perldb = 0;
920
8ebc5c01
PP
921 /* magical thingies */
922
e23d9e2f
CS
923 SvREFCNT_dec(PL_ofsgv); /* *, */
924 PL_ofsgv = NULL;
5f05dabc 925
7889fe52 926 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 927 PL_ors_sv = NULL;
8ebc5c01 928
3280af22 929 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 930 PL_rs = NULL;
dc92893f 931
d33b2eba 932 Safefree(PL_osname); /* $^O */
bd61b366 933 PL_osname = NULL;
5f05dabc 934
3280af22 935 SvREFCNT_dec(PL_statname);
a0714e2c
SS
936 PL_statname = NULL;
937 PL_statgv = NULL;
5f05dabc 938
8ebc5c01
PP
939 /* defgv, aka *_ should be taken care of elsewhere */
940
7d5ea4e7
GS
941 /* float buffer */
942 Safefree(PL_efloatbuf);
bd61b366 943 PL_efloatbuf = NULL;
7d5ea4e7
GS
944 PL_efloatsize = 0;
945
8ebc5c01 946 /* startup and shutdown function lists */
3280af22 947 SvREFCNT_dec(PL_beginav);
5a837c8f 948 SvREFCNT_dec(PL_beginav_save);
3280af22 949 SvREFCNT_dec(PL_endav);
7d30b5c4 950 SvREFCNT_dec(PL_checkav);
ece599bd 951 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
952 SvREFCNT_dec(PL_unitcheckav);
953 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 954 SvREFCNT_dec(PL_initav);
7d49f689
NC
955 PL_beginav = NULL;
956 PL_beginav_save = NULL;
957 PL_endav = NULL;
958 PL_checkav = NULL;
959 PL_checkav_save = NULL;
3c10abe3
AG
960 PL_unitcheckav = NULL;
961 PL_unitcheckav_save = NULL;
7d49f689 962 PL_initav = NULL;
5618dfe8 963
8ebc5c01 964 /* shortcuts just get cleared */
a0714e2c
SS
965 PL_hintgv = NULL;
966 PL_errgv = NULL;
a0714e2c
SS
967 PL_argvoutgv = NULL;
968 PL_stdingv = NULL;
969 PL_stderrgv = NULL;
970 PL_last_in_gv = NULL;
a0714e2c
SS
971 PL_DBsingle = NULL;
972 PL_DBtrace = NULL;
973 PL_DBsignal = NULL;
a6d69523
TC
974 PL_DBsingle_iv = 0;
975 PL_DBtrace_iv = 0;
976 PL_DBsignal_iv = 0;
601f1833 977 PL_DBcv = NULL;
7d49f689 978 PL_dbargs = NULL;
5c284bb0 979 PL_debstash = NULL;
8ebc5c01 980
cf93a474 981 SvREFCNT_dec(PL_envgv);
f03015cd 982 SvREFCNT_dec(PL_incgv);
722fa0e9 983 SvREFCNT_dec(PL_argvgv);
475b1e90 984 SvREFCNT_dec(PL_replgv);
8cece913
FC
985 SvREFCNT_dec(PL_DBgv);
986 SvREFCNT_dec(PL_DBline);
987 SvREFCNT_dec(PL_DBsub);
cf93a474 988 PL_envgv = NULL;
f03015cd 989 PL_incgv = NULL;
722fa0e9 990 PL_argvgv = NULL;
475b1e90 991 PL_replgv = NULL;
8cece913
FC
992 PL_DBgv = NULL;
993 PL_DBline = NULL;
994 PL_DBsub = NULL;
995
7a1c5554 996 SvREFCNT_dec(PL_argvout_stack);
7d49f689 997 PL_argvout_stack = NULL;
8ebc5c01 998
5c831c24 999 SvREFCNT_dec(PL_modglobal);
5c284bb0 1000 PL_modglobal = NULL;
5c831c24 1001 SvREFCNT_dec(PL_preambleav);
7d49f689 1002 PL_preambleav = NULL;
5c831c24 1003 SvREFCNT_dec(PL_subname);
a0714e2c 1004 PL_subname = NULL;
ca0c25f6 1005#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1006 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1007 PL_pidstatus = NULL;
ca0c25f6 1008#endif
5c831c24 1009 SvREFCNT_dec(PL_toptarget);
a0714e2c 1010 PL_toptarget = NULL;
5c831c24 1011 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1012 PL_bodytarget = NULL;
1013 PL_formtarget = NULL;
5c831c24 1014
d33b2eba 1015 /* free locale stuff */
b9582b6a 1016#ifdef USE_LOCALE_COLLATE
d33b2eba 1017 Safefree(PL_collation_name);
bd61b366 1018 PL_collation_name = NULL;
b9582b6a 1019#endif
d33b2eba 1020
b9582b6a 1021#ifdef USE_LOCALE_NUMERIC
d33b2eba 1022 Safefree(PL_numeric_name);
bd61b366 1023 PL_numeric_name = NULL;
a453c169 1024 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1025 PL_numeric_radix_sv = NULL;
b9582b6a 1026#endif
d33b2eba 1027
9c0b6888
KW
1028 /* clear character classes */
1029 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1030 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1031 PL_utf8_swash_ptrs[i] = NULL;
1032 }
5c831c24
GS
1033 SvREFCNT_dec(PL_utf8_mark);
1034 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1035 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1036 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1037 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1038 SvREFCNT_dec(PL_utf8_idstart);
1039 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1040 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1041 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1042 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1043 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1048#ifdef USE_LOCALE_CTYPE
780fcc9f 1049 SvREFCNT_dec(PL_warn_locale);
5b7de470 1050#endif
a0714e2c
SS
1051 PL_utf8_mark = NULL;
1052 PL_utf8_toupper = NULL;
1053 PL_utf8_totitle = NULL;
1054 PL_utf8_tolower = NULL;
1055 PL_utf8_tofold = NULL;
1056 PL_utf8_idstart = NULL;
1057 PL_utf8_idcont = NULL;
2726813d 1058 PL_utf8_foldclosures = NULL;
9fa9f06b 1059 PL_AboveLatin1 = NULL;
e0a1ff7a 1060 PL_InBitmap = NULL;
9fa9f06b 1061 PL_HasMultiCharFold = NULL;
5b7de470 1062#ifdef USE_LOCALE_CTYPE
780fcc9f 1063 PL_warn_locale = NULL;
5b7de470 1064#endif
9fa9f06b
KW
1065 PL_Latin1 = NULL;
1066 PL_NonL1NonFinalFold = NULL;
1067 PL_UpperLatin1 = NULL;
86f72d56 1068 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1069 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1070 PL_XPosix_ptrs[i] = NULL;
86f72d56 1071 }
64935bc6 1072 PL_GCB_invlist = NULL;
06ae2722 1073 PL_SB_invlist = NULL;
ae3bb8ea 1074 PL_WB_invlist = NULL;
5c831c24 1075
971a9dd3 1076 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1077 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1078 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1079 cophh_free(CopHINTHASH_get(&PL_compiling));
1080 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1081 CopFILE_free(&PL_compiling);
5c831c24 1082
a0d0e21e 1083 /* Prepare to destruct main symbol table. */
5f05dabc 1084
3280af22 1085 hv = PL_defstash;
ca556bcd
DM
1086 /* break ref loop *:: <=> %:: */
1087 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1088 PL_defstash = 0;
a0d0e21e 1089 SvREFCNT_dec(hv);
5c831c24 1090 SvREFCNT_dec(PL_curstname);
a0714e2c 1091 PL_curstname = NULL;
a0d0e21e 1092
5a844595
GS
1093 /* clear queued errors */
1094 SvREFCNT_dec(PL_errors);
a0714e2c 1095 PL_errors = NULL;
5a844595 1096
dd69841b
BB
1097 SvREFCNT_dec(PL_isarev);
1098
a0d0e21e 1099 FREETMPS;
9b387841 1100 if (destruct_level >= 2) {
3280af22 1101 if (PL_scopestack_ix != 0)
9b387841
NC
1102 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1103 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1104 (long)PL_scopestack_ix);
3280af22 1105 if (PL_savestack_ix != 0)
9b387841
NC
1106 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1107 "Unbalanced saves: %ld more saves than restores\n",
1108 (long)PL_savestack_ix);
3280af22 1109 if (PL_tmps_floor != -1)
9b387841
NC
1110 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1111 (long)PL_tmps_floor + 1);
a0d0e21e 1112 if (cxstack_ix != -1)
9b387841
NC
1113 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1114 (long)cxstack_ix + 1);
a0d0e21e 1115 }
8990e307 1116
0547a729
DM
1117#ifdef USE_ITHREADS
1118 SvREFCNT_dec(PL_regex_padav);
1119 PL_regex_padav = NULL;
1120 PL_regex_pad = NULL;
1121#endif
1122
776df701 1123#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1124 /* the entries in this list are allocated via SV PVX's, so get freed
1125 * in sv_clean_all */
1126 Safefree(PL_my_cxt_list);
776df701 1127#endif
57bb2458 1128
8990e307 1129 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1130
1131 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1132 while (sv_clean_all() > 2)
5226ed68
JH
1133 ;
1134
23083432
FC
1135#ifdef USE_ITHREADS
1136 Safefree(PL_stashpad); /* must come after sv_clean_all */
1137#endif
1138
d4777f27
GS
1139 AvREAL_off(PL_fdpid); /* no surviving entries */
1140 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1141 PL_fdpid = NULL;
d33b2eba 1142
6c644e78
GS
1143#ifdef HAVE_INTERP_INTERN
1144 sys_intern_clear();
1145#endif
1146
a38ab475
RZ
1147 /* constant strings */
1148 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1149 SvREFCNT_dec(PL_sv_consts[i]);
1150 PL_sv_consts[i] = NULL;
1151 }
1152
6e72f9df
PP
1153 /* Destruct the global string table. */
1154 {
1155 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1156 * so that sv_free() won't fail on them.
80459961
NC
1157 * Now that the global string table is using a single hunk of memory
1158 * for both HE and HEK, we either need to explicitly unshare it the
1159 * correct way, or actually free things here.
6e72f9df 1160 */
80459961
NC
1161 I32 riter = 0;
1162 const I32 max = HvMAX(PL_strtab);
c4420975 1163 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1164 HE *hent = array[0];
1165
6e72f9df 1166 for (;;) {
0453d815 1167 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1168 HE * const next = HeNEXT(hent);
9014280d 1169 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1170 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1171 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1172 Safefree(hent);
1173 hent = next;
6e72f9df
PP
1174 }
1175 if (!hent) {
1176 if (++riter > max)
1177 break;
1178 hent = array[riter];
1179 }
1180 }
80459961
NC
1181
1182 Safefree(array);
1183 HvARRAY(PL_strtab) = 0;
1184 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1185 }
3280af22 1186 SvREFCNT_dec(PL_strtab);
6e72f9df 1187
e652bb2f 1188#ifdef USE_ITHREADS
c21d1a0f 1189 /* free the pointer tables used for cloning */
a0739874 1190 ptr_table_free(PL_ptr_table);
bf9cdc68 1191 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1192#endif
a0739874 1193
d33b2eba
GS
1194 /* free special SVs */
1195
1196 SvREFCNT(&PL_sv_yes) = 0;
1197 sv_clear(&PL_sv_yes);
1198 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1199 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1200
1201 SvREFCNT(&PL_sv_no) = 0;
1202 sv_clear(&PL_sv_no);
1203 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1204 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1205
9f375a43
DM
1206 {
1207 int i;
1208 for (i=0; i<=2; i++) {
1209 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1210 sv_clear(PERL_DEBUG_PAD(i));
1211 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1212 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1213 }
1214 }
1215
0453d815 1216 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1217 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1218
eba0f806
DM
1219#ifdef DEBUG_LEAKING_SCALARS
1220 if (PL_sv_count != 0) {
1221 SV* sva;
1222 SV* sv;
eb578fdb 1223 SV* svend;
eba0f806 1224
ad64d0ec 1225 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1226 svend = &sva[SvREFCNT(sva)];
1227 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1228 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1229 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1230 " flags=0x%"UVxf
fd0854ff 1231 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1232 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1233 "serial %"UVuf"\n",
574b8821
NC
1234 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1235 pTHX__VALUE,
fd0854ff
DM
1236 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1237 sv->sv_debug_line,
1238 sv->sv_debug_inpad ? "for" : "by",
1239 sv->sv_debug_optype ?
1240 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1241 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1242 sv->sv_debug_serial
fd0854ff 1243 );
2aa47728 1244#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1245 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1246#endif
eba0f806
DM
1247 }
1248 }
1249 }
1250 }
2aa47728
NC
1251#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1252 {
1253 int status;
1254 fd_set rset;
1255 /* Wait for up to 4 seconds for child to terminate.
1256 This seems to be the least effort way of timing out on reaping
1257 its exit status. */
1258 struct timeval waitfor = {4, 0};
41e4abd8 1259 int sock = PL_dumper_fd;
2aa47728
NC
1260
1261 shutdown(sock, 1);
1262 FD_ZERO(&rset);
1263 FD_SET(sock, &rset);
1264 select(sock + 1, &rset, NULL, NULL, &waitfor);
1265 waitpid(child, &status, WNOHANG);
1266 close(sock);
1267 }
1268#endif
eba0f806 1269#endif
77abb4c6
NC
1270#ifdef DEBUG_LEAKING_SCALARS_ABORT
1271 if (PL_sv_count)
1272 abort();
1273#endif
bf9cdc68 1274 PL_sv_count = 0;
eba0f806 1275
56a2bab7 1276#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1277 /* No more IO - including error messages ! */
1278 PerlIO_cleanup(aTHX);
1279#endif
1280
9f4bd222 1281 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1282 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1283 for no arg - and will try and SvREFCNT_dec it.
1284 */
1285 SvREFCNT(&PL_sv_undef) = 0;
1286 SvREADONLY_off(&PL_sv_undef);
1287
3280af22 1288 Safefree(PL_origfilename);
bd61b366 1289 PL_origfilename = NULL;
43c5f42d 1290 Safefree(PL_reg_curpm);
dd28f7bb 1291 free_tied_hv_pool();
3280af22 1292 Safefree(PL_op_mask);
cf36064f 1293 Safefree(PL_psig_name);
bf9cdc68 1294 PL_psig_name = (SV**)NULL;
d525a7b2 1295 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1296 {
1297 /* We need to NULL PL_psig_pend first, so that
1298 signal handlers know not to use it */
1299 int *psig_save = PL_psig_pend;
1300 PL_psig_pend = (int*)NULL;
1301 Safefree(psig_save);
1302 }
6e72f9df 1303 nuke_stacks();
284167a5
SM
1304 TAINTING_set(FALSE);
1305 TAINT_WARN_set(FALSE);
3280af22 1306 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1307
a0d0e21e 1308 DEBUG_P(debprofdump());
d33b2eba 1309
b173165c
FC
1310 PL_debug = 0;
1311
e5dd39fc 1312#ifdef USE_REENTRANT_API
10bc17b6 1313 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1314#endif
1315
a24da70b
NC
1316 /* These all point to HVs that are about to be blown away.
1317 Code in core and on CPAN assumes that if the interpreter is re-started
1318 that they will be cleanly NULL or pointing to a valid HV. */
1319 PL_custom_op_names = NULL;
1320 PL_custom_op_descs = NULL;
1321 PL_custom_ops = NULL;
1322
612f20c3
GS
1323 sv_free_arenas();
1324
5d9a96ca
DM
1325 while (PL_regmatch_slab) {
1326 regmatch_slab *s = PL_regmatch_slab;
1327 PL_regmatch_slab = PL_regmatch_slab->next;
1328 Safefree(s);
1329 }
1330
fc36a67e
PP
1331 /* As the absolutely last thing, free the non-arena SV for mess() */
1332
3280af22 1333 if (PL_mess_sv) {
f350b448
NC
1334 /* we know that type == SVt_PVMG */
1335
9c63abab 1336 /* it could have accumulated taint magic */
f350b448
NC
1337 MAGIC* mg;
1338 MAGIC* moremagic;
1339 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1340 moremagic = mg->mg_moremagic;
1341 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1342 && mg->mg_len >= 0)
1343 Safefree(mg->mg_ptr);
1344 Safefree(mg);
9c63abab 1345 }
f350b448 1346
fc36a67e 1347 /* we know that type >= SVt_PV */
8bd4d4c5 1348 SvPV_free(PL_mess_sv);
3280af22
NIS
1349 Safefree(SvANY(PL_mess_sv));
1350 Safefree(PL_mess_sv);
a0714e2c 1351 PL_mess_sv = NULL;
fc36a67e 1352 }
37038d91 1353 return STATUS_EXIT;
79072805
LW
1354}
1355
954c1994
GS
1356/*
1357=for apidoc perl_free
1358
1359Releases a Perl interpreter. See L<perlembed>.
1360
1361=cut
1362*/
1363
79072805 1364void
0cb96387 1365perl_free(pTHXx)
79072805 1366{
5174512c
NC
1367 dVAR;
1368
7918f24d
NC
1369 PERL_ARGS_ASSERT_PERL_FREE;
1370
c301d606
DM
1371 if (PL_veto_cleanup)
1372 return;
1373
7cb608b5 1374#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1375 {
1376 /*
1377 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1378 * value as we're probably hunting memory leaks then
1379 */
36e77d41 1380 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1381 const U32 old_debug = PL_debug;
55ef9aae
MHM
1382 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1383 thread at thread exit. */
4fd0a9b8
NC
1384 if (DEBUG_m_TEST) {
1385 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1386 "free this thread's memory\n");
1387 PL_debug &= ~ DEBUG_m_FLAG;
1388 }
6edcbed6
DD
1389 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1390 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1391 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1392 safesysfree(ptr);
1393 }
4fd0a9b8 1394 PL_debug = old_debug;
55ef9aae
MHM
1395 }
1396 }
7cb608b5
NC
1397#endif
1398
acfe0abc 1399#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1400# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1401 {
acfe0abc 1402# ifdef NETWARE
7af12a34 1403 void *host = nw_internal_host;
7af12a34 1404 PerlMem_free(aTHXx);
7af12a34 1405 nw_delete_internal_host(host);
acfe0abc 1406# else
bdb50480
NC
1407 void *host = w32_internal_host;
1408 PerlMem_free(aTHXx);
7af12a34 1409 win32_delete_internal_host(host);
acfe0abc 1410# endif
7af12a34 1411 }
1c0ca838
GS
1412# else
1413 PerlMem_free(aTHXx);
1414# endif
acfe0abc
GS
1415#else
1416 PerlMem_free(aTHXx);
76e3520e 1417#endif
79072805
LW
1418}
1419
b7f7fff6 1420#if defined(USE_ITHREADS)
aebd1ac7
GA
1421/* provide destructors to clean up the thread key when libperl is unloaded */
1422#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1423
826955bd 1424#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1425#pragma fini "perl_fini"
666ad1ec
GA
1426#elif defined(__sun) && !defined(__GNUC__)
1427#pragma fini (perl_fini)
aebd1ac7
GA
1428#endif
1429
0dbb1585
AL
1430static void
1431#if defined(__GNUC__)
1432__attribute__((destructor))
aebd1ac7 1433#endif
de009b76 1434perl_fini(void)
aebd1ac7 1435{
27da23d5 1436 dVAR;
5c64bffd
NC
1437 if (
1438#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1439 my_vars &&
1440#endif
1441 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1442 FREE_THREAD_KEY;
1443}
1444
1445#endif /* WIN32 */
1446#endif /* THREADS */
1447
4b556e6c 1448void
864dbfa3 1449Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1450{
3280af22
NIS
1451 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1452 PL_exitlist[PL_exitlistlen].fn = fn;
1453 PL_exitlist[PL_exitlistlen].ptr = ptr;
1454 ++PL_exitlistlen;
4b556e6c
JD
1455}
1456
954c1994
GS
1457/*
1458=for apidoc perl_parse
1459
1460Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1461
1462=cut
1463*/
1464
03d9f026
FC
1465#define SET_CURSTASH(newstash) \
1466 if (PL_curstash != newstash) { \
1467 SvREFCNT_dec(PL_curstash); \
1468 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1469 }
1470
79072805 1471int
0cb96387 1472perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1473{
27da23d5 1474 dVAR;
6224f72b 1475 I32 oldscope;
6224f72b 1476 int ret;
db36c5a1 1477 dJMPENV;
8d063cd8 1478
7918f24d
NC
1479 PERL_ARGS_ASSERT_PERL_PARSE;
1480#ifndef MULTIPLICITY
ed6c66dd 1481 PERL_UNUSED_ARG(my_perl);
7918f24d 1482#endif
7dc86639 1483#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1484 {
7dc86639
YO
1485 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1486
22ff3130 1487 if (s && strEQ(s, "1")) {
25c1b134
TC
1488 const unsigned char *seed= PERL_HASH_SEED;
1489 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1490 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1491 while (seed < seed_end) {
1492 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1493 }
6a5b4183
YO
1494#ifdef PERL_HASH_RANDOMIZE_KEYS
1495 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1496 PL_HASH_RAND_BITS_ENABLED,
1497 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1498#endif
7dc86639
YO
1499 PerlIO_printf(Perl_debug_log, "\n");
1500 }
b0891165
JH
1501 }
1502#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
43238333 1503
ea34f6bd 1504#ifdef __amigaos4__
43238333
AB
1505 {
1506 struct NameTranslationInfo nti;
1507 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1508 }
1509#endif
1510
3280af22 1511 PL_origargc = argc;
e2975953 1512 PL_origargv = argv;
a0d0e21e 1513
a2722ac9
GA
1514 if (PL_origalen != 0) {
1515 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1516 }
1517 else {
3cb9023d
JH
1518 /* Set PL_origalen be the sum of the contiguous argv[]
1519 * elements plus the size of the env in case that it is
e9137a8e 1520 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1521 * as the maximum modifiable length of $0. In the worst case
1522 * the area we are able to modify is limited to the size of
43c32782 1523 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1524 * --jhi */
e1ec3a88 1525 const char *s = NULL;
54bfe034 1526 int i;
b7249aaf 1527 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1528 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1529 const UV aligned =
43c32782
JH
1530 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1531
1532 /* See if all the arguments are contiguous in memory. Note
1533 * that 'contiguous' is a loose term because some platforms
1534 * align the argv[] and the envp[]. If the arguments look
1535 * like non-aligned, assume that they are 'strictly' or
1536 * 'traditionally' contiguous. If the arguments look like
1537 * aligned, we just check that they are within aligned
1538 * PTRSIZE bytes. As long as no system has something bizarre
1539 * like the argv[] interleaved with some other data, we are
1540 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1541 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1542 while (*s) s++;
1543 for (i = 1; i < PL_origargc; i++) {
1544 if ((PL_origargv[i] == s + 1
43c32782 1545#ifdef OS2
c8941eeb 1546 || PL_origargv[i] == s + 2
43c32782 1547#endif
c8941eeb
JH
1548 )
1549 ||
1550 (aligned &&
1551 (PL_origargv[i] > s &&
1552 PL_origargv[i] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 )
1555 {
1556 s = PL_origargv[i];
1557 while (*s) s++;
1558 }
1559 else
1560 break;
54bfe034 1561 }
54bfe034 1562 }
a4a109c2
JD
1563
1564#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1565 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1566 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1567 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1568 ||
1569 (aligned &&
1570 (PL_origenviron[0] > s &&
1571 PL_origenviron[0] <=
1572 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1573 )
1574 {
9d419b5f 1575#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1576 s = PL_origenviron[0];
1577 while (*s) s++;
1578#endif
bd61b366 1579 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1580 /* Force copy of environment. */
1581 for (i = 1; PL_origenviron[i]; i++) {
1582 if (PL_origenviron[i] == s + 1
1583 ||
1584 (aligned &&
1585 (PL_origenviron[i] > s &&
1586 PL_origenviron[i] <=
1587 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1588 )
1589 {
1590 s = PL_origenviron[i];
1591 while (*s) s++;
1592 }
1593 else
1594 break;
54bfe034 1595 }
43c32782 1596 }
54bfe034 1597 }
a4a109c2
JD
1598#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1599
2d2af554 1600 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1601 }
1602
3280af22 1603 if (PL_do_undump) {
a0d0e21e
LW
1604
1605 /* Come here if running an undumped a.out. */
1606
3280af22
NIS
1607 PL_origfilename = savepv(argv[0]);
1608 PL_do_undump = FALSE;
a0d0e21e 1609 cxstack_ix = -1; /* start label stack again */
748a9306 1610 init_ids();
284167a5 1611 assert (!TAINT_get);
b7975bdd 1612 TAINT;
e2051532 1613 set_caret_X();
b7975bdd 1614 TAINT_NOT;
a0d0e21e
LW
1615 init_postdump_symbols(argc,argv,env);
1616 return 0;
1617 }
1618
3280af22 1619 if (PL_main_root) {
3280af22 1620 op_free(PL_main_root);
5f66b61c 1621 PL_main_root = NULL;
ff0cee69 1622 }
5f66b61c 1623 PL_main_start = NULL;
3280af22 1624 SvREFCNT_dec(PL_main_cv);
601f1833 1625 PL_main_cv = NULL;
79072805 1626
3280af22
NIS
1627 time(&PL_basetime);
1628 oldscope = PL_scopestack_ix;
599cee73 1629 PL_dowarn = G_WARN_OFF;
f86702cc 1630
14dd3ad8 1631 JMPENV_PUSH(ret);
6224f72b 1632 switch (ret) {
312caa8e 1633 case 0:
14dd3ad8 1634 parse_body(env,xsinit);
9ebf26ad 1635 if (PL_unitcheckav) {
3c10abe3 1636 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1637 }
1638 if (PL_checkav) {
ca7b837b 1639 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1640 call_list(oldscope, PL_checkav);
9ebf26ad 1641 }
14dd3ad8
GS
1642 ret = 0;
1643 break;
6224f72b
GS
1644 case 1:
1645 STATUS_ALL_FAILURE;
924ba076 1646 /* FALLTHROUGH */
6224f72b
GS
1647 case 2:
1648 /* my_exit() was called */
3280af22 1649 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1650 LEAVE;
1651 FREETMPS;
03d9f026 1652 SET_CURSTASH(PL_defstash);
9ebf26ad 1653 if (PL_unitcheckav) {
3c10abe3 1654 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1655 }
1656 if (PL_checkav) {
ca7b837b 1657 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1658 call_list(oldscope, PL_checkav);
9ebf26ad 1659 }
37038d91 1660 ret = STATUS_EXIT;
14dd3ad8 1661 break;
6224f72b 1662 case 3:
bf49b057 1663 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1664 ret = 1;
1665 break;
6224f72b 1666 }
14dd3ad8
GS
1667 JMPENV_POP;
1668 return ret;
1669}
1670
4a5df386
NC
1671/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1672 miniperl, and we need to see those flags reflected in the values here. */
1673
1674/* What this returns is subject to change. Use the public interface in Config.
1675 */
1676static void
1677S_Internals_V(pTHX_ CV *cv)
1678{
1679 dXSARGS;
1680#ifdef LOCAL_PATCH_COUNT
1681 const int local_patch_count = LOCAL_PATCH_COUNT;
1682#else
1683 const int local_patch_count = 0;
1684#endif
2dc296d2 1685 const int entries = 3 + local_patch_count;
4a5df386 1686 int i;
fe1c5936 1687 static const char non_bincompat_options[] =
4a5df386
NC
1688# ifdef DEBUGGING
1689 " DEBUGGING"
1690# endif
1691# ifdef NO_MATHOMS
0d311fbe 1692 " NO_MATHOMS"
4a5df386 1693# endif
59b86f4b
DM
1694# ifdef NO_HASH_SEED
1695 " NO_HASH_SEED"
1696# endif
3b0e4ee2
MB
1697# ifdef NO_TAINT_SUPPORT
1698 " NO_TAINT_SUPPORT"
1699# endif
cb26ef7a
MB
1700# ifdef PERL_BOOL_AS_CHAR
1701 " PERL_BOOL_AS_CHAR"
1702# endif
93c10d60
FC
1703# ifdef PERL_COPY_ON_WRITE
1704 " PERL_COPY_ON_WRITE"
1705# endif
4a5df386
NC
1706# ifdef PERL_DISABLE_PMC
1707 " PERL_DISABLE_PMC"
1708# endif
1709# ifdef PERL_DONT_CREATE_GVSV
1710 " PERL_DONT_CREATE_GVSV"
1711# endif
9a044a43
NC
1712# ifdef PERL_EXTERNAL_GLOB
1713 " PERL_EXTERNAL_GLOB"
1714# endif
59b86f4b
DM
1715# ifdef PERL_HASH_FUNC_SIPHASH
1716 " PERL_HASH_FUNC_SIPHASH"
1717# endif
1718# ifdef PERL_HASH_FUNC_SDBM
1719 " PERL_HASH_FUNC_SDBM"
1720# endif
1721# ifdef PERL_HASH_FUNC_DJB2
1722 " PERL_HASH_FUNC_DJB2"
1723# endif
1724# ifdef PERL_HASH_FUNC_SUPERFAST
1725 " PERL_HASH_FUNC_SUPERFAST"
1726# endif
1727# ifdef PERL_HASH_FUNC_MURMUR3
1728 " PERL_HASH_FUNC_MURMUR3"
1729# endif
1730# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1731 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1732# endif
1733# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1734 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1735# endif
1736# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1737 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1738# endif
4a5df386
NC
1739# ifdef PERL_IS_MINIPERL
1740 " PERL_IS_MINIPERL"
1741# endif
1742# ifdef PERL_MALLOC_WRAP
1743 " PERL_MALLOC_WRAP"
1744# endif
1745# ifdef PERL_MEM_LOG
1746 " PERL_MEM_LOG"
1747# endif
1748# ifdef PERL_MEM_LOG_NOIMPL
1749 " PERL_MEM_LOG_NOIMPL"
1750# endif
59b86f4b
DM
1751# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1752 " PERL_PERTURB_KEYS_DETERMINISTIC"
1753# endif
1754# ifdef PERL_PERTURB_KEYS_DISABLED
1755 " PERL_PERTURB_KEYS_DISABLED"
1756# endif
1757# ifdef PERL_PERTURB_KEYS_RANDOM
1758 " PERL_PERTURB_KEYS_RANDOM"
1759# endif
c3cf41ec
NC
1760# ifdef PERL_PRESERVE_IVUV
1761 " PERL_PRESERVE_IVUV"
1762# endif
c051e30b
NC
1763# ifdef PERL_RELOCATABLE_INCPUSH
1764 " PERL_RELOCATABLE_INCPUSH"
1765# endif
4a5df386
NC
1766# ifdef PERL_USE_DEVEL
1767 " PERL_USE_DEVEL"
1768# endif
1769# ifdef PERL_USE_SAFE_PUTENV
1770 " PERL_USE_SAFE_PUTENV"
1771# endif
a3749cf3
NC
1772# ifdef UNLINK_ALL_VERSIONS
1773 " UNLINK_ALL_VERSIONS"
1774# endif
de618ee4
NC
1775# ifdef USE_ATTRIBUTES_FOR_PERLIO
1776 " USE_ATTRIBUTES_FOR_PERLIO"
1777# endif
4a5df386
NC
1778# ifdef USE_FAST_STDIO
1779 " USE_FAST_STDIO"
1780# endif
59b86f4b
DM
1781# ifdef USE_HASH_SEED_EXPLICIT
1782 " USE_HASH_SEED_EXPLICIT"
1783# endif
98548bdf
NC
1784# ifdef USE_LOCALE
1785 " USE_LOCALE"
1786# endif
98548bdf
NC
1787# ifdef USE_LOCALE_CTYPE
1788 " USE_LOCALE_CTYPE"
1789# endif
6937817d
DD
1790# ifdef WIN32_NO_REGISTRY
1791 " USE_NO_REGISTRY"
1792# endif
5a8d8935
NC
1793# ifdef USE_PERL_ATOF
1794 " USE_PERL_ATOF"
1795# endif
0d311fbe
NC
1796# ifdef USE_SITECUSTOMIZE
1797 " USE_SITECUSTOMIZE"
1798# endif
4a5df386
NC
1799 ;
1800 PERL_UNUSED_ARG(cv);
d3db1514 1801 PERL_UNUSED_VAR(items);
4a5df386
NC
1802
1803 EXTEND(SP, entries);
1804
1805 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1806 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1807 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1808
6baa8dbd
NT
1809#ifndef PERL_BUILD_DATE
1810# ifdef __DATE__
1811# ifdef __TIME__
1812# define PERL_BUILD_DATE __DATE__ " " __TIME__
1813# else
1814# define PERL_BUILD_DATE __DATE__
1815# endif
1816# endif
1817#endif
1818
1819#ifdef PERL_BUILD_DATE
4a5df386 1820 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1821 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1822 SVs_TEMP));
4a5df386
NC
1823#else
1824 PUSHs(&PL_sv_undef);
1825#endif
1826
4a5df386
NC
1827 for (i = 1; i <= local_patch_count; i++) {
1828 /* This will be an undef, if PL_localpatches[i] is NULL. */
1829 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1830 }
1831
1832 XSRETURN(entries);
1833}
1834
be71fc8f
NC
1835#define INCPUSH_UNSHIFT 0x01
1836#define INCPUSH_ADD_OLD_VERS 0x02
1837#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1838#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1839#define INCPUSH_NOT_BASEDIR 0x10
1840#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1841#define INCPUSH_ADD_SUB_DIRS \
1842 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1843
312caa8e 1844STATIC void *
14dd3ad8 1845S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1846{
27da23d5 1847 dVAR;
2f9285f8 1848 PerlIO *rsfp;
312caa8e 1849 int argc = PL_origargc;
8f42b153 1850 char **argv = PL_origargv;
e1ec3a88 1851 const char *scriptname = NULL;
402582ca 1852 bool dosearch = FALSE;
eb578fdb 1853 char c;
737c24fc 1854 bool doextract = FALSE;
bd61b366 1855 const char *cddir = NULL;
ab019eaa 1856#ifdef USE_SITECUSTOMIZE
20ef40cf 1857 bool minus_f = FALSE;
ab019eaa 1858#endif
95670bde 1859 SV *linestr_sv = NULL;
5486870f 1860 bool add_read_e_script = FALSE;
87606032 1861 U32 lex_start_flags = 0;
009d90df 1862
ca7b837b 1863 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1864
6224f72b 1865 init_main_stash();
54310121 1866
c7030b81
NC
1867 {
1868 const char *s;
6224f72b
GS
1869 for (argc--,argv++; argc > 0; argc--,argv++) {
1870 if (argv[0][0] != '-' || !argv[0][1])
1871 break;
6224f72b
GS
1872 s = argv[0]+1;
1873 reswitch:
47f56822 1874 switch ((c = *s)) {
729a02f2 1875 case 'C':
1d5472a9
GS
1876#ifndef PERL_STRICT_CR
1877 case '\r':
1878#endif
6224f72b
GS
1879 case ' ':
1880 case '0':
1881 case 'F':
1882 case 'a':
1883 case 'c':
1884 case 'd':
1885 case 'D':
1886 case 'h':
1887 case 'i':
1888 case 'l':
1889 case 'M':
1890 case 'm':
1891 case 'n':
1892 case 'p':
1893 case 's':
1894 case 'u':
1895 case 'U':
1896 case 'v':
599cee73
PM
1897 case 'W':
1898 case 'X':
6224f72b 1899 case 'w':
97bd5664 1900 if ((s = moreswitches(s)))
6224f72b
GS
1901 goto reswitch;
1902 break;
33b78306 1903
1dbad523 1904 case 't':
dc6d7f5c 1905#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1906 /* silently ignore */
dc6d7f5c 1907#elif defined(NO_TAINT_SUPPORT)
3231f579 1908 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1909 "Cowardly refusing to run with -t or -T flags");
1910#else
22f7c9c9 1911 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1912 if( !TAINTING_get ) {
1913 TAINT_WARN_set(TRUE);
1914 TAINTING_set(TRUE);
317ea90d 1915 }
284167a5 1916#endif
317ea90d
MS
1917 s++;
1918 goto reswitch;
6224f72b 1919 case 'T':
dc6d7f5c 1920#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1921 /* silently ignore */
dc6d7f5c 1922#elif defined(NO_TAINT_SUPPORT)
3231f579 1923 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1924 "Cowardly refusing to run with -t or -T flags");
1925#else
22f7c9c9 1926 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1927 TAINTING_set(TRUE);
1928 TAINT_WARN_set(FALSE);
1929#endif
6224f72b
GS
1930 s++;
1931 goto reswitch;
f86702cc 1932
bc9b29db
RH
1933 case 'E':
1934 PL_minus_E = TRUE;
924ba076 1935 /* FALLTHROUGH */
6224f72b 1936 case 'e':
f20b2998 1937 forbid_setid('e', FALSE);
3280af22 1938 if (!PL_e_script) {
396482e1 1939 PL_e_script = newSVpvs("");
5486870f 1940 add_read_e_script = TRUE;
6224f72b
GS
1941 }
1942 if (*++s)
3280af22 1943 sv_catpv(PL_e_script, s);
6224f72b 1944 else if (argv[1]) {
3280af22 1945 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1946 argc--,argv++;
1947 }
1948 else
47f56822 1949 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1950 sv_catpvs(PL_e_script, "\n");
6224f72b 1951 break;
afe37c7d 1952
20ef40cf 1953 case 'f':
f5542d3a 1954#ifdef USE_SITECUSTOMIZE
20ef40cf 1955 minus_f = TRUE;
f5542d3a 1956#endif
20ef40cf
GA
1957 s++;
1958 goto reswitch;
1959
6224f72b 1960 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1961 forbid_setid('I', FALSE);
bd61b366 1962 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1963 argc--,argv++;
1964 }
6224f72b 1965 if (s && *s) {
0df16ed7 1966 STRLEN len = strlen(s);
55b4bc1c 1967 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1968 }
1969 else
a67e862a 1970 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1971 break;
6224f72b 1972 case 'S':
f20b2998 1973 forbid_setid('S', FALSE);
6224f72b
GS
1974 dosearch = TRUE;
1975 s++;
1976 goto reswitch;
1977 case 'V':
7edfd0ef
NC
1978 {
1979 SV *opts_prog;
1980
7edfd0ef 1981 if (*++s != ':') {
37ca4a5b 1982 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1983 }
1984 else {
1985 ++s;
1986 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1987 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1988 0, s, 0);
1989 s += strlen(s);
1990 }
37ca4a5b 1991 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1992 /* don't look for script or read stdin */
1993 scriptname = BIT_BUCKET;
1994 goto reswitch;
6224f72b 1995 }
6224f72b 1996 case 'x':
737c24fc 1997 doextract = TRUE;
6224f72b 1998 s++;
304334da 1999 if (*s)
f4c556ac 2000 cddir = s;
6224f72b
GS
2001 break;
2002 case 0:
2003 break;
2004 case '-':
2005 if (!*++s || isSPACE(*s)) {
2006 argc--,argv++;
2007 goto switch_end;
2008 }
ee8bc8b7
NC
2009 /* catch use of gnu style long options.
2010 Both of these exit immediately. */
2011 if (strEQ(s, "version"))
2012 minus_v();
2013 if (strEQ(s, "help"))
2014 usage();
6224f72b 2015 s--;
924ba076 2016 /* FALLTHROUGH */
6224f72b 2017 default:
cea2e8a9 2018 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2019 }
2020 }
c7030b81
NC
2021 }
2022
6224f72b 2023 switch_end:
54310121 2024
c7030b81
NC
2025 {
2026 char *s;
2027
f675dbe5
CB
2028 if (
2029#ifndef SECURE_INTERNAL_GETENV
284167a5 2030 !TAINTING_get &&
f675dbe5 2031#endif
cf756827 2032 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2033 {
9e0b0d62
KW
2034 /* s points to static memory in getenv(), which may be overwritten at
2035 * any time; use a mortal copy instead */
2036 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2037
74288ac8
GS
2038 while (isSPACE(*s))
2039 s++;
317ea90d 2040 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2041#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2042 /* silently ignore */
dc6d7f5c 2043#elif defined(NO_TAINT_SUPPORT)
3231f579 2044 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2045 "Cowardly refusing to run with -t or -T flags");
2046#else
22f7c9c9 2047 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2048 TAINTING_set(TRUE);
2049 TAINT_WARN_set(FALSE);
2050#endif
317ea90d 2051 }
74288ac8 2052 else {
bd61b366 2053 char *popt_copy = NULL;
74288ac8 2054 while (s && *s) {
54913509 2055 const char *d;
74288ac8
GS
2056 while (isSPACE(*s))
2057 s++;
2058 if (*s == '-') {
2059 s++;
2060 if (isSPACE(*s))
2061 continue;
2062 }
4ea8f8fb 2063 d = s;
74288ac8
GS
2064 if (!*s)
2065 break;
2b622f1a 2066 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2067 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2068 while (++s && *s) {
2069 if (isSPACE(*s)) {
cf756827 2070 if (!popt_copy) {
bfa6c418
NC
2071 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2072 s = popt_copy + (s - d);
2073 d = popt_copy;
cf756827 2074 }
4ea8f8fb
MS
2075 *s++ = '\0';
2076 break;
2077 }
2078 }
1c4db469 2079 if (*d == 't') {
dc6d7f5c 2080#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2081 /* silently ignore */
dc6d7f5c 2082#elif defined(NO_TAINT_SUPPORT)
3231f579 2083 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2084 "Cowardly refusing to run with -t or -T flags");
2085#else
2086 if( !TAINTING_get) {
2087 TAINT_WARN_set(TRUE);
2088 TAINTING_set(TRUE);
317ea90d 2089 }
284167a5 2090#endif
1c4db469 2091 } else {
97bd5664 2092 moreswitches(d);
1c4db469 2093 }
6224f72b 2094 }
6224f72b
GS
2095 }
2096 }
c7030b81 2097 }
a0d0e21e 2098
c29067d7
CH
2099 /* Set $^X early so that it can be used for relocatable paths in @INC */
2100 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2101 assert (!TAINT_get);
c29067d7 2102 TAINT;
e2051532 2103 set_caret_X();
c29067d7
CH
2104 TAINT_NOT;
2105
43c0c913 2106#if defined(USE_SITECUSTOMIZE)
20ef40cf 2107 if (!minus_f) {
43c0c913 2108 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2109 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2110 ie a q() operator with a NUL byte as a the delimiter. This avoids
2111 problems with pathnames containing (say) ' */
43c0c913
NC
2112# ifdef PERL_IS_MINIPERL
2113 AV *const inc = GvAV(PL_incgv);
2114 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2115
2116 if (inc0) {
15870c5c
NC
2117 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2118 it should be reported immediately as a build failure. */
43c0c913
NC
2119 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2120 Perl_newSVpvf(aTHX_
5de87db5 2121 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2122 "do {local $!; -f $f }"
2123 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2124 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2125 }
2126# else
2127 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2128 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2129 if (raw_sitelib) {
2130 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2131 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2132 INCPUSH_CAN_RELOCATE);
2133 const char *const sitelib = SvPVX(sitelib_sv);
2134 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2135 Perl_newSVpvf(aTHX_
2136 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2137 0, SVfARG(sitelib), 0,
2138 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2139 assert (SvREFCNT(sitelib_sv) == 1);
2140 SvREFCNT_dec(sitelib_sv);
2141 }
43c0c913 2142# endif
20ef40cf
GA
2143 }
2144#endif
2145
6224f72b
GS
2146 if (!scriptname)
2147 scriptname = argv[0];
3280af22 2148 if (PL_e_script) {
6224f72b
GS
2149 argc++,argv--;
2150 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2151 }
bd61b366 2152 else if (scriptname == NULL) {
6224f72b
GS
2153#ifdef MSDOS
2154 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2155 moreswitches("h");
6224f72b
GS
2156#endif
2157 scriptname = "-";
2158 }
2159
284167a5 2160 assert (!TAINT_get);
2cace6ac 2161 init_perllib();
6224f72b 2162
a52eba0e 2163 {
f20b2998 2164 bool suidscript = FALSE;
829372d3 2165
8d113837 2166 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2167 if (!rsfp) {
2168 rsfp = PerlIO_stdin();
87606032 2169 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2170 }
6224f72b 2171
b24bc095 2172 validate_suid(rsfp);
6224f72b 2173
64ca3a65 2174#ifndef PERL_MICRO
a52eba0e
NC
2175# if defined(SIGCHLD) || defined(SIGCLD)
2176 {
2177# ifndef SIGCHLD
2178# define SIGCHLD SIGCLD
2179# endif
2180 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2181 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2182 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2183 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2184 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2185 }
0b5b802d 2186 }
a52eba0e 2187# endif
64ca3a65 2188#endif
0b5b802d 2189
737c24fc 2190 if (doextract) {
faef540c 2191
f20b2998 2192 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2193 setuid scripts. */
2194 forbid_setid('x', suidscript);
f20b2998 2195 /* Hence you can't get here if suidscript is true */
faef540c 2196
95670bde
NC
2197 linestr_sv = newSV_type(SVt_PV);
2198 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2199 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2200 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2201 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2202 }
f4c556ac 2203 }
6224f72b 2204
ea726b52 2205 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2206 CvUNIQUE_on(PL_compcv);
2207
eacbb379 2208 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2209
dd69841b
BB
2210 PL_isarev = newHV();
2211
0c4f7ff0 2212 boot_core_PerlIO();
6224f72b 2213 boot_core_UNIVERSAL();
e1a479c5 2214 boot_core_mro();
4a5df386 2215 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2216
2217 if (xsinit)
acfe0abc 2218 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2219#ifndef PERL_MICRO
739a0b84 2220#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2221 init_os_extras();
6224f72b 2222#endif
64ca3a65 2223#endif
6224f72b 2224
29209bc5 2225#ifdef USE_SOCKS
1b9c9cf5
DH
2226# ifdef HAS_SOCKS5_INIT
2227 socks5_init(argv[0]);
2228# else
29209bc5 2229 SOCKSinit(argv[0]);
1b9c9cf5 2230# endif
ac27b0f5 2231#endif
29209bc5 2232
6224f72b
GS
2233 init_predump_symbols();
2234 /* init_postdump_symbols not currently designed to be called */
2235 /* more than once (ENV isn't cleared first, for example) */
2236 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2237 if (!PL_do_undump)
6224f72b
GS
2238 init_postdump_symbols(argc,argv,env);
2239
27da23d5
JH
2240 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2241 * or explicitly in some platforms.
085a54d9 2242 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2243 * look like the user wants to use UTF-8. */
a0fd4948 2244#if defined(__SYMBIAN32__)
27da23d5
JH
2245 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2246#endif
e27b5b51 2247# ifndef PERL_IS_MINIPERL
06e66572
JH
2248 if (PL_unicode) {
2249 /* Requires init_predump_symbols(). */
a05d7ebb 2250 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2251 IO* io;
2252 PerlIO* fp;
2253 SV* sv;
2254
a05d7ebb 2255 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2256 * and the default open disciplines. */
a05d7ebb
JH
2257 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2258 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2259 (fp = IoIFP(io)))
2260 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2261 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2262 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2263 (fp = IoOFP(io)))
2264 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2265 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2266 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2267 (fp = IoOFP(io)))
2268 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2269 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2270 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2271 SVt_PV)))) {
a05d7ebb
JH
2272 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2273 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2274 if (in) {
2275 if (out)
76f68e9b 2276 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2277 else
76f68e9b 2278 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2279 }
2280 else if (out)
76f68e9b 2281 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2282 SvSETMAGIC(sv);
2283 }
b310b053
JH
2284 }
2285 }
e27b5b51 2286#endif
b310b053 2287
c7030b81
NC
2288 {
2289 const char *s;
4ffa73a3
JH
2290 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2291 if (strEQ(s, "unsafe"))
2292 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2293 else if (strEQ(s, "safe"))
2294 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2295 else
2296 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2297 }
c7030b81 2298 }
4ffa73a3 2299
81d86705 2300
87606032 2301 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2302 SvREFCNT_dec(linestr_sv);
95670bde 2303
219f7226 2304 PL_subname = newSVpvs("main");
6224f72b 2305
5486870f
DM
2306 if (add_read_e_script)
2307 filter_add(read_e_script, NULL);
2308
6224f72b
GS
2309 /* now parse the script */
2310
93189314 2311 SETERRNO(0,SS_NORMAL);
28ac2b49 2312 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2313 if (PL_minus_c)
cea2e8a9 2314 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2315 else {
cea2e8a9 2316 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2317 PL_origfilename);
6224f72b
GS
2318 }
2319 }
57843af0 2320 CopLINE_set(PL_curcop, 0);
03d9f026 2321 SET_CURSTASH(PL_defstash);
3280af22
NIS
2322 if (PL_e_script) {
2323 SvREFCNT_dec(PL_e_script);
a0714e2c 2324 PL_e_script = NULL;
6224f72b
GS
2325 }
2326
3280af22 2327 if (PL_do_undump)
6224f72b
GS
2328 my_unexec();
2329
57843af0
GS
2330 if (isWARN_ONCE) {
2331 SAVECOPFILE(PL_curcop);
2332 SAVECOPLINE(PL_curcop);
3280af22 2333 gv_check(PL_defstash);
57843af0 2334 }
6224f72b
GS
2335
2336 LEAVE;
2337 FREETMPS;
2338
2339#ifdef MYMALLOC
f6a607bc
RGS
2340 {
2341 const char *s;
22ff3130
HS
2342 UV uv;
2343 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2344 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2345 dump_mstats("after compilation:");
f6a607bc 2346 }
6224f72b
GS
2347#endif
2348
2349 ENTER;
febb3a6d 2350 PL_restartjmpenv = NULL;
3280af22 2351 PL_restartop = 0;
312caa8e 2352 return NULL;
6224f72b
GS
2353}
2354
954c1994
GS
2355/*
2356=for apidoc perl_run
2357
2358Tells a Perl interpreter to run. See L<perlembed>.
2359
2360=cut
2361*/
2362
6224f72b 2363int
0cb96387 2364perl_run(pTHXx)
6224f72b 2365{
6224f72b 2366 I32 oldscope;
14dd3ad8 2367 int ret = 0;
db36c5a1 2368 dJMPENV;
6224f72b 2369
7918f24d
NC
2370 PERL_ARGS_ASSERT_PERL_RUN;
2371#ifndef MULTIPLICITY
ed6c66dd 2372 PERL_UNUSED_ARG(my_perl);
7918f24d 2373#endif
9d4ba2ae 2374
3280af22 2375 oldscope = PL_scopestack_ix;
96e176bf
CL
2376#ifdef VMS
2377 VMSISH_HUSHED = 0;
2378#endif
6224f72b 2379
14dd3ad8 2380 JMPENV_PUSH(ret);
6224f72b
GS
2381 switch (ret) {
2382 case 1:
2383 cxstack_ix = -1; /* start context stack again */
312caa8e 2384 goto redo_body;
14dd3ad8 2385 case 0: /* normal completion */
14dd3ad8
GS
2386 redo_body:
2387 run_body(oldscope);
924ba076 2388 /* FALLTHROUGH */
14dd3ad8 2389 case 2: /* my_exit() */
3280af22 2390 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2391 LEAVE;
2392 FREETMPS;
03d9f026 2393 SET_CURSTASH(PL_defstash);
3a1ee7e8 2394 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2395 PL_endav && !PL_minus_c) {
ca7b837b 2396 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2397 call_list(oldscope, PL_endav);
9ebf26ad 2398 }
6224f72b
GS
2399#ifdef MYMALLOC
2400 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2401 dump_mstats("after execution: ");
2402#endif
37038d91 2403 ret = STATUS_EXIT;
14dd3ad8 2404 break;
6224f72b 2405 case 3:
312caa8e
CS
2406 if (PL_restartop) {
2407 POPSTACK_TO(PL_mainstack);
2408 goto redo_body;
6224f72b 2409 }
5637ef5b 2410 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2411 FREETMPS;
14dd3ad8
GS
2412 ret = 1;
2413 break;
6224f72b
GS
2414 }
2415
14dd3ad8
GS
2416 JMPENV_POP;
2417 return ret;
312caa8e
CS
2418}
2419
dd374669 2420STATIC void
14dd3ad8
GS
2421S_run_body(pTHX_ I32 oldscope)
2422{
d3b97530
DM
2423 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2424 PL_sawampersand ? "Enabling" : "Omitting",
2425 (unsigned int)(PL_sawampersand)));
6224f72b 2426
3280af22 2427 if (!PL_restartop) {
cf2782cd 2428#ifdef DEBUGGING
f0e3f042
CS
2429 if (DEBUG_x_TEST || DEBUG_B_TEST)
2430 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2431 if (!DEBUG_q_TEST)
2432 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2433#endif
6224f72b 2434
3280af22 2435 if (PL_minus_c) {
bf49b057 2436 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2437 my_exit(0);
2438 }
3280af22 2439 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2440 PL_DBsingle_iv = 1;
9ebf26ad 2441 if (PL_initav) {
ca7b837b 2442 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2443 call_list(oldscope, PL_initav);
9ebf26ad 2444 }
f1fac472 2445#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2446 if (PL_main_root && PL_main_root->op_slabbed)
2447 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2448#endif
6224f72b
GS
2449 }
2450
2451 /* do it */
2452
ca7b837b 2453 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2454
3280af22 2455 if (PL_restartop) {
febb3a6d 2456 PL_restartjmpenv = NULL;
533c011a 2457 PL_op = PL_restartop;
3280af22 2458 PL_restartop = 0;
cea2e8a9 2459 CALLRUNOPS(aTHX);
6224f72b 2460 }
3280af22
NIS
2461 else if (PL_main_start) {
2462 CvDEPTH(PL_main_cv) = 1;
533c011a 2463 PL_op = PL_main_start;
cea2e8a9 2464 CALLRUNOPS(aTHX);
6224f72b 2465 }
f6b3007c 2466 my_exit(0);
e5964223 2467 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2468}
2469
954c1994 2470/*
ccfc67b7
JH
2471=head1 SV Manipulation Functions
2472
954c1994
GS
2473=for apidoc p||get_sv
2474
64ace3f8 2475Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2476C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2477Perl variable does not exist then it will be created. If C<flags> is zero
2478and the variable does not exist then NULL is returned.
954c1994
GS
2479
2480=cut
2481*/
2482
6224f72b 2483SV*
64ace3f8 2484Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2485{
2486 GV *gv;
7918f24d
NC
2487
2488 PERL_ARGS_ASSERT_GET_SV;
2489
64ace3f8 2490 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2491 if (gv)
2492 return GvSV(gv);
a0714e2c 2493 return NULL;
6224f72b
GS
2494}
2495
954c1994 2496/*
ccfc67b7
JH
2497=head1 Array Manipulation Functions
2498
954c1994
GS
2499=for apidoc p||get_av
2500
f0b90de1
SF
2501Returns the AV of the specified Perl global or package array with the given
2502name (so it won't work on lexical variables). C<flags> are passed
72d33970 2503to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2504Perl variable does not exist then it will be created. If C<flags> is zero
2505and the variable does not exist then NULL is returned.
954c1994 2506
f0b90de1
SF
2507Perl equivalent: C<@{"$name"}>.
2508
954c1994
GS
2509=cut
2510*/
2511
6224f72b 2512AV*
cbfd0a87 2513Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2514{
cbfd0a87 2515 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2516
2517 PERL_ARGS_ASSERT_GET_AV;
2518
cbfd0a87 2519 if (flags)
6224f72b
GS
2520 return GvAVn(gv);
2521 if (gv)
2522 return GvAV(gv);
7d49f689 2523 return NULL;
6224f72b
GS
2524}
2525
954c1994 2526/*
ccfc67b7
JH
2527=head1 Hash Manipulation Functions
2528
954c1994
GS
2529=for apidoc p||get_hv
2530
6673a63c 2531Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2532C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2533Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2534and the variable does not exist then C<NULL> is returned.
954c1994
GS
2535
2536=cut
2537*/
2538
6224f72b 2539HV*
6673a63c 2540Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2541{
6673a63c 2542 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2543
2544 PERL_ARGS_ASSERT_GET_HV;
2545
6673a63c 2546 if (flags)
a0d0e21e
LW
2547 return GvHVn(gv);
2548 if (gv)
2549 return GvHV(gv);
5c284bb0 2550 return NULL;
a0d0e21e
LW
2551}
2552
954c1994 2553/*
ccfc67b7
JH
2554=head1 CV Manipulation Functions
2555
780a5241
NC
2556=for apidoc p||get_cvn_flags
2557
2558Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2559C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2560exist then it will be declared (which has the same effect as saying
2561C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2562then NULL is returned.
2563
954c1994
GS
2564=for apidoc p||get_cv
2565
780a5241 2566Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2567
2568=cut
2569*/
2570
a0d0e21e 2571CV*
780a5241 2572Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2573{
780a5241 2574 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2575
2576 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2577
334dda80
FC
2578 /* XXX this is probably not what they think they're getting.
2579 * It has the same effect as "sub name;", i.e. just a forward
2580 * declaration! */
780a5241 2581 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2582 return newSTUB(gv,0);
780a5241 2583 }
a0d0e21e 2584 if (gv)
8ebc5c01 2585 return GvCVu(gv);
601f1833 2586 return NULL;
a0d0e21e
LW
2587}
2588
2c67934f
NC
2589/* Nothing in core calls this now, but we can't replace it with a macro and
2590 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2591CV*
2592Perl_get_cv(pTHX_ const char *name, I32 flags)
2593{
7918f24d
NC
2594 PERL_ARGS_ASSERT_GET_CV;
2595
780a5241
NC
2596 return get_cvn_flags(name, strlen(name), flags);
2597}
2598
79072805
LW
2599/* Be sure to refetch the stack pointer after calling these routines. */
2600
954c1994 2601/*
ccfc67b7
JH
2602
2603=head1 Callback Functions
2604
954c1994
GS
2605=for apidoc p||call_argv
2606
f0b90de1 2607Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2608with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2609L<perlcall>.
f0b90de1
SF
2610
2611Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2612
2613=cut
2614*/
2615
a0d0e21e 2616I32
5aaab254 2617Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2618
8ac85365
NIS
2619 /* See G_* flags in cop.h */
2620 /* null terminated arg list */
8990e307 2621{
a0d0e21e 2622 dSP;
8990e307 2623
7918f24d
NC
2624 PERL_ARGS_ASSERT_CALL_ARGV;
2625
924508f0 2626 PUSHMARK(SP);
3dc78631
DM
2627 while (*argv) {
2628 mXPUSHs(newSVpv(*argv,0));
2629 argv++;
8990e307 2630 }
3dc78631 2631 PUTBACK;
864dbfa3 2632 return call_pv(sub_name, flags);
8990e307
LW
2633}
2634
954c1994
GS
2635/*
2636=for apidoc p||call_pv
2637
2638Performs a callback to the specified Perl sub. See L<perlcall>.
2639
2640=cut
2641*/
2642
a0d0e21e 2643I32
864dbfa3 2644Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2645 /* name of the subroutine */
2646 /* See G_* flags in cop.h */
a0d0e21e 2647{
7918f24d
NC
2648 PERL_ARGS_ASSERT_CALL_PV;
2649
0da0e728 2650 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2651}
2652
954c1994
GS
2653/*
2654=for apidoc p||call_method
2655
2656Performs a callback to the specified Perl method. The blessed object must
2657be on the stack. See L<perlcall>.
2658
2659=cut
2660*/
2661
a0d0e21e 2662I32
864dbfa3 2663Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2664 /* name of the subroutine */
2665 /* See G_* flags in cop.h */
a0d0e21e 2666{
46ca9bac 2667 STRLEN len;
c106c2be 2668 SV* sv;
7918f24d
NC
2669 PERL_ARGS_ASSERT_CALL_METHOD;
2670
46ca9bac 2671 len = strlen(methname);
c106c2be
RZ
2672 sv = flags & G_METHOD_NAMED
2673 ? sv_2mortal(newSVpvn_share(methname, len,0))
2674 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2675
c106c2be 2676 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2677}
2678
2679/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2680/*
2681=for apidoc p||call_sv
2682
078e2213
TC
2683Performs a callback to the Perl sub specified by the SV.
2684
7c0c544c 2685If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2686SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2687or C<SvPV(sv)> will be used as the name of the sub to call.
2688
2689If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2690C<SvPV(sv)> will be used as the name of the method to call.
2691
2692If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2693the name of the method to call.
2694
2695Some other values are treated specially for internal use and should
2696not be depended on.
2697
2698See L<perlcall>.
954c1994
GS
2699
2700=cut
2701*/
2702
a0d0e21e 2703I32
001d637e 2704Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2705 /* See G_* flags in cop.h */
a0d0e21e 2706{
5b434c73 2707 dVAR;
a0d0e21e 2708 LOGOP myop; /* fake syntax tree node */
b46e009d 2709 METHOP method_op;
aa689395 2710 I32 oldmark;
8ea43dc8 2711 VOL I32 retval = 0;
a0d0e21e 2712 I32 oldscope;
54310121 2713 bool oldcatch = CATCH_GET;
6224f72b 2714 int ret;
c4420975 2715 OP* const oldop = PL_op;
db36c5a1 2716 dJMPENV;
1e422769 2717
7918f24d
NC
2718 PERL_ARGS_ASSERT_CALL_SV;
2719
a0d0e21e
LW
2720 if (flags & G_DISCARD) {
2721 ENTER;
2722 SAVETMPS;
2723 }
2f8edad0
NC
2724 if (!(flags & G_WANT)) {
2725 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2726 */
2727 flags |= G_SCALAR;
2728 }
a0d0e21e 2729
aa689395 2730 Zero(&myop, 1, LOGOP);
f51d4af5 2731 if (!(flags & G_NOARGS))
aa689395 2732 myop.op_flags |= OPf_STACKED;
4f911530 2733 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2734 SAVEOP();
533c011a 2735 PL_op = (OP*)&myop;
aa689395 2736
8c9009ad 2737 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2738 dSP;
2739 EXTEND(SP, 1);
8c9009ad
DD
2740 PUSHs(sv);
2741 PUTBACK;
5b434c73 2742 }
aa689395 2743 oldmark = TOPMARK;
3280af22 2744 oldscope = PL_scopestack_ix;
a0d0e21e 2745
3280af22 2746 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2747 /* Handle first BEGIN of -d. */
3280af22 2748 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2749 /* Try harder, since this may have been a sighandler, thus
2750 * curstash may be meaningless. */
ea726b52 2751 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2752 && !(flags & G_NODEBUG))
5ff48db8 2753 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2754
c106c2be 2755 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2756 Zero(&method_op, 1, METHOP);
2757 method_op.op_next = (OP*)&myop;
2758 PL_op = (OP*)&method_op;
c106c2be 2759 if ( flags & G_METHOD_NAMED ) {
b46e009d 2760 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2761 method_op.op_type = OP_METHOD_NAMED;
2762 method_op.op_u.op_meth_sv = sv;
c106c2be 2763 } else {
b46e009d 2764 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2765 method_op.op_type = OP_METHOD;
c106c2be
RZ
2766 }
2767 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2768 myop.op_type = OP_ENTERSUB;
968b3946
GS
2769 }
2770
312caa8e 2771 if (!(flags & G_EVAL)) {
0cdb2077 2772 CATCH_SET(TRUE);
d6f07c05 2773 CALL_BODY_SUB((OP*)&myop);
312caa8e 2774 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2775 CATCH_SET(oldcatch);
312caa8e
CS
2776 }
2777 else {
d78bda3d 2778 myop.op_other = (OP*)&myop;
6cae08a8 2779 POPMARK;
edb2152a 2780 create_eval_scope(flags|G_FAKINGEVAL);
6cae08a8 2781 INCMARK;
a0d0e21e 2782
14dd3ad8 2783 JMPENV_PUSH(ret);
edb2152a 2784
6224f72b
GS
2785 switch (ret) {
2786 case 0:
14dd3ad8 2787 redo_body:
d6f07c05 2788 CALL_BODY_SUB((OP*)&myop);
312caa8e 2789 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2790 if (!(flags & G_KEEPERR)) {
ab69dbc2 2791 CLEAR_ERRSV();
8433848b 2792 }
a0d0e21e 2793 break;
6224f72b 2794 case 1:
f86702cc 2795 STATUS_ALL_FAILURE;
924ba076 2796 /* FALLTHROUGH */
6224f72b 2797 case 2:
a0d0e21e 2798 /* my_exit() was called */
03d9f026 2799 SET_CURSTASH(PL_defstash);
a0d0e21e 2800 FREETMPS;
14dd3ad8 2801 JMPENV_POP;
f86702cc 2802 my_exit_jump();
e5964223 2803 NOT_REACHED; /* NOTREACHED */
6224f72b 2804 case 3:
3280af22 2805 if (PL_restartop) {
febb3a6d 2806 PL_restartjmpenv = NULL;
533c011a 2807 PL_op = PL_restartop;
3280af22 2808 PL_restartop = 0;
312caa8e 2809 goto redo_body;
a0d0e21e 2810 }
3280af22 2811 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2812 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2813 retval = 0;
2814 else {
2815 retval = 1;
3280af22 2816 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2817 }
312caa8e 2818 break;
a0d0e21e 2819 }
a0d0e21e 2820
edb2152a
NC
2821 if (PL_scopestack_ix > oldscope)
2822 delete_eval_scope();
14dd3ad8 2823 JMPENV_POP;
a0d0e21e 2824 }
1e422769 2825
a0d0e21e 2826 if (flags & G_DISCARD) {
3280af22 2827 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2828 retval = 0;
2829 FREETMPS;
2830 LEAVE;
2831 }
533c011a 2832 PL_op = oldop;
a0d0e21e
LW
2833 return retval;
2834}
2835
6e72f9df 2836/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2837
954c1994
GS
2838/*
2839=for apidoc p||eval_sv
2840
72d33970 2841Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2842as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2843
2844=cut
2845*/
2846
a0d0e21e 2847I32
864dbfa3 2848Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2849
8ac85365 2850 /* See G_* flags in cop.h */
a0d0e21e 2851{
97aff369 2852 dVAR;
a0d0e21e 2853 UNOP myop; /* fake syntax tree node */
5b434c73 2854 VOL I32 oldmark;
8ea43dc8 2855 VOL I32 retval = 0;
6224f72b 2856 int ret;
c4420975 2857 OP* const oldop = PL_op;
db36c5a1 2858 dJMPENV;
84902520 2859
7918f24d
NC
2860 PERL_ARGS_ASSERT_EVAL_SV;
2861
4633a7c4
LW
2862 if (flags & G_DISCARD) {
2863 ENTER;
2864 SAVETMPS;
2865 }
2866
462e5cf6 2867 SAVEOP();
533c011a 2868 PL_op = (OP*)&myop;
5ff48db8 2869 Zero(&myop, 1, UNOP);
5b434c73
DD
2870 {
2871 dSP;
2872 oldmark = SP - PL_stack_base;
2873 EXTEND(SP, 1);
2874 PUSHs(sv);
2875 PUTBACK;
2876 }
79072805 2877
4633a7c4
LW
2878 if (!(flags & G_NOARGS))
2879 myop.op_flags = OPf_STACKED;
6e72f9df 2880 myop.op_type = OP_ENTEREVAL;
4f911530 2881 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2882 if (flags & G_KEEPERR)
2883 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2884
2885 if (flags & G_RE_REPARSING)
2886 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2887
dedbcade
DM
2888 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2889 * before a PUSHEVAL, which corrupts the stack after a croak */
2890 TAINT_PROPER("eval_sv()");
2891
14dd3ad8 2892 JMPENV_PUSH(ret);
6224f72b
GS
2893 switch (ret) {
2894 case 0:
14dd3ad8 2895 redo_body:
2ba65d5f
DM
2896 if (PL_op == (OP*)(&myop)) {
2897 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2898 if (!PL_op)
2899 goto fail; /* failed in compilation */
2900 }
4aca2f62 2901 CALLRUNOPS(aTHX);
312caa8e 2902 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2903 if (!(flags & G_KEEPERR)) {
ab69dbc2 2904 CLEAR_ERRSV();
8433848b 2905 }
4633a7c4 2906 break;
6224f72b 2907 case 1:
f86702cc 2908 STATUS_ALL_FAILURE;
924ba076 2909 /* FALLTHROUGH */
6224f72b 2910 case 2:
4633a7c4 2911 /* my_exit() was called */
03d9f026 2912 SET_CURSTASH(PL_defstash);
4633a7c4 2913 FREETMPS;
14dd3ad8 2914 JMPENV_POP;
f86702cc 2915 my_exit_jump();
e5964223 2916 NOT_REACHED; /* NOTREACHED */
6224f72b 2917 case 3:
3280af22 2918 if (PL_restartop) {
febb3a6d 2919 PL_restartjmpenv = NULL;
533c011a 2920 PL_op = PL_restartop;
3280af22 2921 PL_restartop = 0;
312caa8e 2922 goto redo_body;
4633a7c4 2923 }
4aca2f62 2924 fail:
3280af22 2925 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2926 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2927 retval = 0;
2928 else {
2929 retval = 1;
3280af22 2930 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2931 }
312caa8e 2932 break;
4633a7c4
LW
2933 }
2934
14dd3ad8 2935 JMPENV_POP;
4633a7c4 2936 if (flags & G_DISCARD) {
3280af22 2937 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2938 retval = 0;
2939 FREETMPS;
2940 LEAVE;
2941 }
533c011a 2942 PL_op = oldop;
4633a7c4
LW
2943 return retval;
2944}
2945
954c1994
GS
2946/*
2947=for apidoc p||eval_pv
2948
422791e4 2949Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2950
2951=cut
2952*/
2953
137443ea 2954SV*
864dbfa3 2955Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2956{
137443ea
PP
2957 SV* sv = newSVpv(p, 0);
2958
7918f24d
NC
2959 PERL_ARGS_ASSERT_EVAL_PV;
2960
864dbfa3 2961 eval_sv(sv, G_SCALAR);
137443ea
PP
2962 SvREFCNT_dec(sv);
2963
ed1786ad
DD
2964 {
2965 dSP;
2966 sv = POPs;
2967 PUTBACK;
2968 }
137443ea 2969
eed484f9
DD
2970 /* just check empty string or undef? */
2971 if (croak_on_error) {
2972 SV * const errsv = ERRSV;
2973 if(SvTRUE_NN(errsv))
2974 /* replace with croak_sv? */
2975 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2976 }
137443ea
PP
2977
2978 return sv;
2979}
2980
4633a7c4
LW
2981/* Require a module. */
2982
954c1994 2983/*
ccfc67b7
JH
2984=head1 Embedding Functions
2985
954c1994
GS
2986=for apidoc p||require_pv
2987
7d3fb230
BS
2988Tells Perl to C<require> the file named by the string argument. It is
2989analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2990implemented that way; consider using load_module instead.
954c1994 2991
7d3fb230 2992=cut */
954c1994 2993
4633a7c4 2994void
864dbfa3 2995Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2996{
d3acc0f7 2997 dSP;
97aff369 2998 SV* sv;
7918f24d
NC
2999
3000 PERL_ARGS_ASSERT_REQUIRE_PV;
3001
e788e7d3 3002 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3003 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3004 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3005 POPSTACK;
79072805
LW
3006}
3007
76e3520e 3008STATIC void
b6f82619 3009S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3010{
ab821d7f 3011 /* This message really ought to be max 23 lines.
75c72d73 3012 * Removed -h because the user already knows that option. Others? */
fb73857a 3013
1566c39d
NC
3014 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3015 minimum of 509 character string literals. */
27da23d5 3016 static const char * const usage_msg[] = {
1566c39d
NC
3017" -0[octal] specify record separator (\\0, if no argument)\n"
3018" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3019" -C[number/list] enables the listed Unicode features\n"
3020" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3021" -d[:debugger] run program under debugger\n"
3022" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3023" -e program one line of program (several -e's allowed, omit programfile)\n"
3024" -E program like -e, but enables all optional features\n"
3025" -f don't do $sitelib/sitecustomize.pl at startup\n"
3026" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3027" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3028" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3029" -l[octal] enable line ending processing, specifies line terminator\n"
3030" -[mM][-]module execute \"use/no module...\" before executing program\n"
3031" -n assume \"while (<>) { ... }\" loop around program\n"
3032" -p assume loop like -n but print line also, like sed\n"
3033" -s enable rudimentary parsing for switches after programfile\n"
3034" -S look for programfile using PATH environment variable\n",
3035" -t enable tainting warnings\n"
3036" -T enable tainting checks\n"
3037" -u dump core after parsing program\n"
3038" -U allow unsafe operations\n"
3039" -v print version, patchlevel and license\n"
3040" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3041" -w enable many useful warnings\n"
1566c39d
NC
3042" -W enable all warnings\n"
3043" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3044" -X disable all warnings\n"
3045" \n"
3046"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3047NULL
3048};
27da23d5 3049 const char * const *p = usage_msg;
1566c39d 3050 PerlIO *out = PerlIO_stdout();
fb73857a 3051
1566c39d
NC
3052 PerlIO_printf(out,
3053 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3054 PL_origargv[0]);
fb73857a 3055 while (*p)
1566c39d 3056 PerlIO_puts(out, *p++);
b6f82619 3057 my_exit(0);
4633a7c4
LW
3058}
3059
b4ab917c
DM
3060/* convert a string of -D options (or digits) into an int.
3061 * sets *s to point to the char after the options */
3062
3063#ifdef DEBUGGING
3064int
e1ec3a88 3065Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3066{
27da23d5 3067 static const char * const usage_msgd[] = {
651b8f1a
NC
3068 " Debugging flag values: (see also -d)\n"
3069 " p Tokenizing and parsing (with v, displays parse stack)\n"
3070 " s Stack snapshots (with v, displays all stacks)\n"
3071 " l Context (loop) stack processing\n"
3072 " t Trace execution\n"
3073 " o Method and overloading resolution\n",
3074 " c String/numeric conversions\n"
3075 " P Print profiling info, source file input state\n"
3076 " m Memory and SV allocation\n"
3077 " f Format processing\n"
3078 " r Regular expression parsing and execution\n"
3079 " x Syntax tree dump\n",
3080 " u Tainting checks\n"
3081 " H Hash dump -- usurps values()\n"
3082 " X Scratchpad allocation\n"
3083 " D Cleaning up\n"
56967202 3084 " S Op slab allocation\n"
651b8f1a
NC
3085 " T Tokenising\n"
3086 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3087 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3088 " v Verbose: use in conjunction with other flags\n"
3089 " C Copy On Write\n"
3090 " A Consistency checks on internal structures\n"
3091 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3092 " M trace smart match resolution\n"
3093 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3094 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3095 NULL
3096 };
22ff3130 3097 UV uv = 0;
7918f24d
NC
3098
3099 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3100
b4ab917c
DM
3101 if (isALPHA(**s)) {
3102 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3103 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3104
0eb30aeb 3105 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3106 const char * const d = strchr(debopts,**s);
b4ab917c 3107 if (d)
22ff3130 3108 uv |= 1 << (d - debopts);
b4ab917c 3109 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3110 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3111 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3112 }
3113 }
e6e64d9b 3114 else if (isDIGIT(**s)) {
96e440d2 3115 const char* e;
22ff3130 3116 if (grok_atoUV(*s, &uv, &e))
96e440d2 3117 *s = e;
0eb30aeb 3118 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3119 }
ddcf8bc1 3120 else if (givehelp) {
06e869a4 3121 const char *const *p = usage_msgd;
651b8f1a 3122 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3123 }
22ff3130 3124 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3125}
3126#endif
3127
79072805
LW
3128/* This routine handles any switches that can be given during run */
3129
c7030b81
NC
3130const char *
3131Perl_moreswitches(pTHX_ const char *s)
79072805 3132{
27da23d5 3133 dVAR;
84c133a0 3134 UV rschar;
0544e6df 3135 const char option = *s; /* used to remember option in -m/-M code */
79072805 3136
7918f24d
NC
3137 PERL_ARGS_ASSERT_MORESWITCHES;
3138
79072805
LW
3139 switch (*s) {
3140 case '0':
a863c7d1 3141 {
f2095865 3142 I32 flags = 0;
a3b680e6 3143 STRLEN numlen;
f2095865
JH
3144
3145 SvREFCNT_dec(PL_rs);
3146 if (s[1] == 'x' && s[2]) {
a3b680e6 3147 const char *e = s+=2;
f2095865
JH
3148 U8 *tmps;
3149
a3b680e6
AL
3150 while (*e)
3151 e++;
f2095865
JH
3152 numlen = e - s;
3153 flags = PERL_SCAN_SILENT_ILLDIGIT;
3154 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3155 if (s + numlen < e) {
3156 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3157 numlen = 0;
3158 s--;
3159 }
396482e1 3160 PL_rs = newSVpvs("");
5f560d8a 3161 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865
JH
3162 tmps = (U8*)SvPVX(PL_rs);
3163 uvchr_to_utf8(tmps, rschar);
5f560d8a 3164 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3165 SvUTF8_on(PL_rs);
3166 }
3167 else {
3168 numlen = 4;
3169 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3170 if (rschar & ~((U8)~0))
3171 PL_rs = &PL_sv_undef;
3172 else if (!rschar && numlen >= 2)
396482e1 3173 PL_rs = newSVpvs("");
f2095865
JH
3174 else {
3175 char ch = (char)rschar;
3176 PL_rs = newSVpvn(&ch, 1);
3177 }
3178 }
64ace3f8 3179 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3180 return s + numlen;
a863c7d1 3181 }
46487f74 3182 case 'C':
a05d7ebb 3183 s++;
dd374669 3184 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3185 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3186 PL_utf8cache = -1;
46487f74 3187 return s;
2304df62 3188 case 'F':
5fc691f1 3189 PL_minus_a = TRUE;
3280af22 3190 PL_minus_F = TRUE;
24ffa309 3191 PL_minus_n = TRUE;
ebce5377
RGS
3192 PL_splitstr = ++s;
3193 while (*s && !isSPACE(*s)) ++s;
e49e380e 3194 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3195 return s;
79072805 3196 case 'a':
3280af22 3197 PL_minus_a = TRUE;
24ffa309 3198 PL_minus_n = TRUE;
79072805
LW
3199 s++;
3200 return s;
3201 case 'c':
3280af22 3202 PL_minus_c = TRUE;
79072805
LW
3203 s++;
3204 return s;
3205 case 'd':
f20b2998 3206 forbid_setid('d', FALSE);
4633a7c4 3207 s++;
2cbb2ee1
RGS
3208
3209 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3210 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3211 ++s;
3212 my_setenv("PERL5DB_THREADED", "1");
3213 }
3214
70c94a19
RR
3215 /* The following permits -d:Mod to accepts arguments following an =
3216 in the fashion that -MSome::Mod does. */
3217 if (*s == ':' || *s == '=') {
b19934fb
NC
3218 const char *start;
3219 const char *end;
3220 SV *sv;
3221
3222 if (*++s == '-') {
3223 ++s;
3224 sv = newSVpvs("no Devel::");
3225 } else {
3226 sv = newSVpvs("use Devel::");
3227 }
3228
3229 start = s;
3230 end = s + strlen(s);
f85893a1 3231
b19934fb 3232 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3233 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3234 if (*s != '=')
f85893a1 3235 sv_catpvn(sv, start, end - start);
70c94a19
RR
3236 else {
3237 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3238 /* Don't use NUL as q// delimiter here, this string goes in the
3239 * environment. */
3240 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3241 }
f85893a1 3242 s = end;
184f32ec 3243 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3244 SvREFCNT_dec(sv);
4633a7c4 3245 }
ed094faf 3246 if (!PL_perldb) {
3280af22 3247 PL_perldb = PERLDB_ALL;
a0d0e21e 3248 init_debugger();
ed094faf 3249 }
79072805
LW
3250 return s;
3251 case 'D':
0453d815 3252 {
79072805 3253#ifdef DEBUGGING
f20b2998 3254 forbid_setid('D', FALSE);
b4ab917c 3255 s++;
dd374669 3256 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3257#else /* !DEBUGGING */
0453d815 3258 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3259 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3260 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3261 for (s++; isWORDCHAR(*s); s++) ;
79072805 3262#endif
79072805 3263 return s;
2b5060ae 3264 NOT_REACHED; /* NOTREACHED */
0453d815 3265 }
4633a7c4 3266 case 'h':
b6f82619 3267 usage();
2b5060ae
DM
3268 NOT_REACHED; /* NOTREACHED */
3269
79072805 3270 case 'i':
43c5f42d 3271 Safefree(PL_inplace);
c030f24b
GH
3272#if defined(__CYGWIN__) /* do backup extension automagically */
3273 if (*(s+1) == '\0') {
c86a4f2e 3274 PL_inplace = savepvs(".bak");
c030f24b
GH
3275 return s+1;
3276 }
3277#endif /* __CYGWIN__ */
5ef5d758 3278 {
d4c19fe8 3279 const char * const start = ++s;
5ef5d758
NC
3280 while (*s && !isSPACE(*s))
3281 ++s;
3282
3283 PL_inplace = savepvn(start, s - start);
3284 }
7b8d334a 3285 if (*s) {
5ef5d758 3286 ++s;
7b8d334a 3287 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3288 s++;
7b8d334a 3289 }
fb73857a 3290 return s;
4e49a025 3291 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3292 forbid_setid('I', FALSE);
fb73857a
PP
3293 ++s;
3294 while (*s && isSPACE(*s))
3295 ++s;
3296 if (*s) {
c7030b81 3297 const char *e, *p;
0df16ed7
GS
3298 p = s;
3299 /* ignore trailing spaces (possibly followed by other switches) */
3300 do {
3301 for (e = p; *e && !isSPACE(*e); e++) ;
3302 p = e;
3303 while (isSPACE(*p))
3304 p++;
3305 } while (*p && *p != '-');
55b4bc1c 3306 incpush(s, e-s,
e28f3139 3307 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3308 s = p;
3309 if (*s == '-')
3310 s++;
79072805
LW
3311 }
3312 else
a67e862a 3313 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3314 return s;
79072805 3315 case 'l':
3280af22 3316 PL_minus_l = TRUE;
79072805 3317 s++;
7889fe52
NIS
3318 if (PL_ors_sv) {
3319 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3320 PL_ors_sv = NULL;
7889fe52 3321 }
79072805 3322 if (isDIGIT(*s)) {
53305cf1 3323 I32 flags = 0;
a3b680e6 3324 STRLEN numlen;
396482e1 3325 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3326 numlen = 3 + (*s == '0');
3327 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3328 s += numlen;
3329 }
3330 else {
8bfdd7d9 3331 if (RsPARA(PL_rs)) {
396482e1 3332 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3333 }
3334 else {
8bfdd7d9 3335 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3336 }
79072805
LW
3337 }
3338 return s;
1a30305b 3339 case 'M':
f20b2998 3340 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3341 /* FALLTHROUGH */
1a30305b 3342 case 'm':
f20b2998 3343 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3344 if (*++s) {
c7030b81 3345 const char *start;
b64cb68c 3346 const char *end;
11343788 3347 SV *sv;
e1ec3a88 3348 const char *use = "use ";
0544e6df 3349 bool colon = FALSE;
a5f75d66 3350 /* -M-foo == 'no foo' */
d0043bd1
NC
3351 /* Leading space on " no " is deliberate, to make both
3352 possibilities the same length. */
3353 if (*s == '-') { use = " no "; ++s; }
3354 sv = newSVpvn(use,4);
a5f75d66 3355 start = s;
1a30305b 3356 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3357 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3358 if( *s++ == ':' ) {
3359 if( *s == ':' )
3360 s++;
3361 else
3362 colon = TRUE;
3363 }
3364 }
3365 if (s == start)
3366 Perl_croak(aTHX_ "Module name required with -%c option",
3367 option);
3368 if (colon)
3369 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3370 "contains single ':'",
63da6837 3371 (int)(s - start), start, option);
b64cb68c 3372 end = s + strlen(s);
c07a80fd 3373 if (*s != '=') {
b64cb68c 3374 sv_catpvn(sv, start, end - start);
0544e6df 3375 if (option == 'm') {
c07a80fd 3376 if (*s != '\0')
cea2e8a9 3377 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3378 sv_catpvs( sv, " ()");
c07a80fd
PP
3379 }
3380 } else {
11343788 3381 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3382 /* Use NUL as q''-delimiter. */
3383 sv_catpvs(sv, " split(/,/,q\0");
3384 ++s;
3385 sv_catpvn(sv, s, end - s);
396482e1 3386 sv_catpvs(sv, "\0)");
c07a80fd 3387 }
b64cb68c 3388 s = end;
29a861e7 3389 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3390 }
3391 else
0544e6df 3392 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3393 return s;
79072805 3394 case 'n':
3280af22 3395 PL_minus_n = TRUE;
79072805
LW
3396 s++;
3397 return s;
3398 case 'p':
3280af22 3399 PL_minus_p = TRUE;
79072805
LW
3400 s++;
3401 return s;
3402 case 's':
f20b2998 3403 forbid_setid('s', FALSE);
3280af22 3404 PL_doswitches = TRUE;
79072805
LW
3405 s++;
3406 return s;
6537fe72 3407 case 't':
27a6968b 3408 case 'T':
dc6d7f5c 3409#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3410 /* silently ignore */
dc6d7f5c 3411#elif defined(NO_TAINT_SUPPORT)
3231f579 3412 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3413 "Cowardly refusing to run with -t or -T flags");
3414#else
3415 if (!TAINTING_get)
27a6968b 3416 TOO_LATE_FOR(*s);
284167a5 3417#endif
6537fe72 3418 s++;
463ee0b2 3419 return s;
79072805 3420 case 'u':
3280af22 3421 PL_do_undump = TRUE;
79072805
LW
3422 s++;
3423 return s;
3424 case 'U':
3280af22 3425 PL_unsafe = TRUE;
79072805
LW
3426 s++;
3427 return s;
3428 case 'v':
c4bc78d9
NC
3429 minus_v();
3430 case 'w':
3431 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3432 PL_dowarn |= G_WARN_ON;
3433 }
3434 s++;
3435 return s;
3436 case 'W':
3437 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3438 if (!specialWARN(PL_compiling.cop_warnings))
3439 PerlMemShared_free(PL_compiling.cop_warnings);
3440 PL_compiling.cop_warnings = pWARN_ALL ;
3441 s++;
3442 return s;
3443 case 'X':
3444 PL_dowarn = G_WARN_ALL_OFF;
3445 if (!specialWARN(PL_compiling.cop_warnings))
3446 PerlMemShared_free(PL_compiling.cop_warnings);
3447 PL_compiling.cop_warnings = pWARN_NONE ;
3448 s++;
3449 return s;
3450 case '*':
3451 case ' ':
3452 while( *s == ' ' )
3453 ++s;
3454 if (s[0] == '-') /* Additional switches on #! line. */
3455 return s+1;
3456 break;
3457 case '-':
3458 case 0:
3459#if defined(WIN32) || !defined(PERL_STRICT_CR)
3460 case '\r':
3461#endif
3462 case '\n':
3463 case '\t':
3464 break;
3465#ifdef ALTERNATE_SHEBANG
3466 case 'S': /* OS/2 needs -S on "extproc" line. */
3467 break;
3468#endif
4bb78d63
CB
3469 case 'e': case 'f': case 'x': case 'E':
3470#ifndef ALTERNATE_SHEBANG
3471 case 'S':
3472#endif
3473 case 'V':
c4bc78d9 3474 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3475 default:
3476 Perl_croak(aTHX_
3477 "Unrecognized switch: -%.1s (-h will show valid options)",s
3478 );
c4bc78d9
NC
3479 }
3480 return NULL;
3481}
3482
3483
3484STATIC void
3485S_minus_v(pTHX)
3486{