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4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
LW
8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW
11 */
12
a0d0e21e 13/*
4ac71550
TC
14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
TC
17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
39#endif
40
2aa47728 41#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
42# ifdef I_SYSUIO
43# include <sys/uio.h>
44# endif
45
46union control_un {
47 struct cmsghdr cm;
48 char control[CMSG_SPACE(sizeof(int))];
49};
50
2aa47728
NC
51#endif
52
5311654c
JH
53#ifndef HZ
54# ifdef CLK_TCK
55# define HZ CLK_TCK
56# else
57# define HZ 60
58# endif
59#endif
60
7114a2d2 61#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 62char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
63#endif
64
acfe0abc 65static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 66
cc69b689 67#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 68# define validate_suid(rsfp) NOOP
cc69b689 69#else
b24bc095 70# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 71#endif
8d063cd8 72
d6f07c05
AL
73#define CALL_BODY_SUB(myop) \
74 if (PL_op == (myop)) \
139d0ce6 75 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
76 if (PL_op) \
77 CALLRUNOPS(aTHX);
78
79#define CALL_LIST_BODY(cv) \
80 PUSHMARK(PL_stack_sp); \
9a8aa25b 81 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 82
e6827a76 83static void
daa7d858 84S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 85{
27da23d5 86 dVAR;
e6827a76
NC
87 if (!PL_curinterp) {
88 PERL_SET_INTERP(my_perl);
3db8f154 89#if defined(USE_ITHREADS)
e6827a76
NC
90 INIT_THREADS;
91 ALLOC_THREAD_KEY;
92 PERL_SET_THX(my_perl);
93 OP_REFCNT_INIT;
e8570548 94 OP_CHECK_MUTEX_INIT;
71ad1b0c 95 HINTS_REFCNT_INIT;
e6827a76 96 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM
97 MUTEX_INIT(&PL_my_ctx_mutex);
98# endif
e6827a76 99 }
c0bce9aa
NC
100#if defined(USE_ITHREADS)
101 else
102#else
103 /* This always happens for non-ithreads */
104#endif
105 {
e6827a76
NC
106 PERL_SET_THX(my_perl);
107 }
108}
06d86050 109
cbec8ebe
DM
110
111/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
112
113void
114Perl_sys_init(int* argc, char*** argv)
115{
4fc0badb 116 dVAR;
7918f24d
NC
117
118 PERL_ARGS_ASSERT_SYS_INIT;
119
cbec8ebe
DM
120 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
121 PERL_UNUSED_ARG(argv);
122 PERL_SYS_INIT_BODY(argc, argv);
123}
124
125void
126Perl_sys_init3(int* argc, char*** argv, char*** env)
127{
4fc0badb 128 dVAR;
7918f24d
NC
129
130 PERL_ARGS_ASSERT_SYS_INIT3;
131
cbec8ebe
DM
132 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
133 PERL_UNUSED_ARG(argv);
134 PERL_UNUSED_ARG(env);
135 PERL_SYS_INIT3_BODY(argc, argv, env);
136}
137
138void
88772978 139Perl_sys_term(void)
cbec8ebe 140{
4fc0badb 141 dVAR;
bf81751b
DM
142 if (!PL_veto_cleanup) {
143 PERL_SYS_TERM_BODY();
144 }
cbec8ebe
DM
145}
146
147
32e30700
GS
148#ifdef PERL_IMPLICIT_SYS
149PerlInterpreter *
7766f137
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150perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
152 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
153 struct IPerlDir* ipD, struct IPerlSock* ipS,
154 struct IPerlProc* ipP)
155{
156 PerlInterpreter *my_perl;
7918f24d
NC
157
158 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
159
9f653bb5 160 /* Newx() needs interpreter, so call malloc() instead */
32e30700 161 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 162 S_init_tls_and_interp(my_perl);
32e30700
GS
163 Zero(my_perl, 1, PerlInterpreter);
164 PL_Mem = ipM;
7766f137
GS
165 PL_MemShared = ipMS;
166 PL_MemParse = ipMP;
32e30700
GS
167 PL_Env = ipE;
168 PL_StdIO = ipStd;
169 PL_LIO = ipLIO;
170 PL_Dir = ipD;
171 PL_Sock = ipS;
172 PL_Proc = ipP;
7cb608b5 173 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 174
32e30700
GS
175 return my_perl;
176}
177#else
954c1994
GS
178
179/*
ccfc67b7
JH
180=head1 Embedding Functions
181
954c1994
GS
182=for apidoc perl_alloc
183
184Allocates a new Perl interpreter. See L<perlembed>.
185
186=cut
187*/
188
93a17b20 189PerlInterpreter *
cea2e8a9 190perl_alloc(void)
79072805 191{
cea2e8a9 192 PerlInterpreter *my_perl;
79072805 193
9f653bb5 194 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 195 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 196
e6827a76 197 S_init_tls_and_interp(my_perl);
7cb608b5 198#ifndef PERL_TRACK_MEMPOOL
07409e01 199 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
200#else
201 Zero(my_perl, 1, PerlInterpreter);
202 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
203 return my_perl;
204#endif
79072805 205}
32e30700 206#endif /* PERL_IMPLICIT_SYS */
79072805 207
954c1994
GS
208/*
209=for apidoc perl_construct
210
211Initializes a new Perl interpreter. See L<perlembed>.
212
213=cut
214*/
215
79072805 216void
0cb96387 217perl_construct(pTHXx)
79072805 218{
27da23d5 219 dVAR;
7918f24d
NC
220
221 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
222
8990e307 223#ifdef MULTIPLICITY
54aff467 224 init_interp();
ac27b0f5 225 PL_perl_destruct_level = 1;
54aff467 226#else
7918f24d 227 PERL_UNUSED_ARG(my_perl);
54aff467
GS
228 if (PL_perl_destruct_level > 0)
229 init_interp();
230#endif
34caed6d
DM
231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
75d476e2
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233#ifdef PERL_TRACE_OPS
234 Zero(PL_op_exec_cnt, OP_max+2, UV);
235#endif
236
0d96b528 237 init_constants();
34caed6d
DM
238
239 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 240 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
241
242 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 243#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 244 PL_pidstatus = newHV();
ca0c25f6 245#endif
79072805 246
396482e1 247 PL_rs = newSVpvs("\n");
dc92893f 248
cea2e8a9 249 init_stacks();
79072805 250
748a9306 251 init_ids();
a5f75d66 252
312caa8e 253 JMPENV_BOOTSTRAP;
f86702cc
PP
254 STATUS_ALL_SUCCESS;
255
0672f40e 256 init_i18nl10n(1);
0b5b802d 257
ab821d7f 258#if defined(LOCAL_PATCH_COUNT)
3280af22 259 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
260#endif
261
52853b95
GS
262#ifdef HAVE_INTERP_INTERN
263 sys_intern_init();
264#endif
265
3a1ee7e8 266 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 267
3280af22
NIS
268 PL_fdpid = newAV(); /* for remembering popen pids by fd */
269 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 270 PL_errors = newSVpvs("");
76f68e9b
MHM
271 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
272 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
273 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 274#ifdef USE_ITHREADS
402d2eb1
NC
275 /* First entry is a list of empty elements. It needs to be initialised
276 else all hell breaks loose in S_find_uninit_var(). */
277 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 278 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 279 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 280#endif
e5dd39fc 281#ifdef USE_REENTRANT_API
59bd0823 282 Perl_reentrant_init(aTHX);
e5dd39fc 283#endif
7dc86639
YO
284#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
285 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
286 * This MUST be done before any hash stores or fetches take place.
287 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
288 * yourself, it is your responsibility to provide a good random seed!
289 * You can also define PERL_HASH_SEED in compile time, see hv.h.
290 *
291 * XXX: fix this comment */
292 if (PL_hash_seed_set == FALSE) {
293 Perl_get_hash_seed(aTHX_ PL_hash_seed);
294 PL_hash_seed_set= TRUE;
295 }
296#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
297
298 /* Note that strtab is a rather special HV. Assumptions are made
299 about not iterating on it, and not adding tie magic to it.
300 It is properly deallocated in perl_destruct() */
301 PL_strtab = newHV();
302
3d47000e
AB
303 HvSHAREKEYS_off(PL_strtab); /* mandatory */
304 hv_ksplit(PL_strtab, 512);
305
a38ab475
RZ
306 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
307
2f42fcb0
JH
308#ifndef PERL_MICRO
309# ifdef USE_ENVIRON_ARRAY
0631ea03 310 PL_origenviron = environ;
2f42fcb0 311# endif
0631ea03
AB
312#endif
313
5311654c 314 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 315 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
316 * The HZ if not originally defined has been by now
317 * been defined as CLK_TCK, if available. */
b6c36746 318#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
319 PL_clocktick = sysconf(_SC_CLK_TCK);
320 if (PL_clocktick <= 0)
321#endif
322 PL_clocktick = HZ;
323
081fc587
AB
324 PL_stashcache = newHV();
325
e8e3635e 326 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 327
27da23d5
JH
328#ifdef HAS_MMAP
329 if (!PL_mmap_page_size) {
330#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
331 {
332 SETERRNO(0, SS_NORMAL);
333# ifdef _SC_PAGESIZE
334 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
335# else
336 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
337# endif
338 if ((long) PL_mmap_page_size < 0) {
339 if (errno) {
44f8325f 340 SV * const error = ERRSV;
d4c19fe8 341 SvUPGRADE(error, SVt_PV);
0510663f 342 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
343 }
344 else
345 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
346 }
347 }
348#else
349# ifdef HAS_GETPAGESIZE
350 PL_mmap_page_size = getpagesize();
351# else
352# if defined(I_SYS_PARAM) && defined(PAGESIZE)
353 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
354# endif
355# endif
356#endif
357 if (PL_mmap_page_size <= 0)
358 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
359 (IV) PL_mmap_page_size);
360 }
361#endif /* HAS_MMAP */
362
363#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
364 PL_timesbase.tms_utime = 0;
365 PL_timesbase.tms_stime = 0;
366 PL_timesbase.tms_cutime = 0;
367 PL_timesbase.tms_cstime = 0;
368#endif
369
7d113631
NC
370 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
371
a3e6e81e 372 PL_registered_mros = newHV();
9e169432
NC
373 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
374 HvMAX(PL_registered_mros) = 0;
a3e6e81e 375
7b8dd5f4
KW
376 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
377 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
378 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
379 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
380 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
381 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
382 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
383 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
384 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
385 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
386 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
387 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
388 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
389 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
390 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
391 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 392 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
393 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
394 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
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")) {
7dc86639
YO
1488 unsigned char *seed= PERL_HASH_SEED;
1489 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
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
AB
1503
1504#if defined(__amigaos4__)
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
5a8d8935
NC
1790# ifdef USE_PERL_ATOF
1791 " USE_PERL_ATOF"
1792# endif
0d311fbe
NC
1793# ifdef USE_SITECUSTOMIZE
1794 " USE_SITECUSTOMIZE"
1795# endif
4a5df386
NC
1796 ;
1797 PERL_UNUSED_ARG(cv);
d3db1514 1798 PERL_UNUSED_VAR(items);
4a5df386
NC
1799
1800 EXTEND(SP, entries);
1801
1802 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1803 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1804 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1805
1806#ifdef __DATE__
1807# ifdef __TIME__
1808 PUSHs(Perl_newSVpvn_flags(aTHX_
1809 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1810 SVs_TEMP));
1811# else
1812 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1813 SVs_TEMP));
1814# endif
1815#else
1816 PUSHs(&PL_sv_undef);
1817#endif
1818
4a5df386
NC
1819 for (i = 1; i <= local_patch_count; i++) {
1820 /* This will be an undef, if PL_localpatches[i] is NULL. */
1821 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1822 }
1823
1824 XSRETURN(entries);
1825}
1826
be71fc8f
NC
1827#define INCPUSH_UNSHIFT 0x01
1828#define INCPUSH_ADD_OLD_VERS 0x02
1829#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1830#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1831#define INCPUSH_NOT_BASEDIR 0x10
1832#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1833#define INCPUSH_ADD_SUB_DIRS \
1834 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1835
312caa8e 1836STATIC void *
14dd3ad8 1837S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1838{
27da23d5 1839 dVAR;
2f9285f8 1840 PerlIO *rsfp;
312caa8e 1841 int argc = PL_origargc;
8f42b153 1842 char **argv = PL_origargv;
e1ec3a88 1843 const char *scriptname = NULL;
402582ca 1844 bool dosearch = FALSE;
eb578fdb 1845 char c;
737c24fc 1846 bool doextract = FALSE;
bd61b366 1847 const char *cddir = NULL;
ab019eaa 1848#ifdef USE_SITECUSTOMIZE
20ef40cf 1849 bool minus_f = FALSE;
ab019eaa 1850#endif
95670bde 1851 SV *linestr_sv = NULL;
5486870f 1852 bool add_read_e_script = FALSE;
87606032 1853 U32 lex_start_flags = 0;
009d90df 1854
ca7b837b 1855 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1856
6224f72b 1857 init_main_stash();
54310121 1858
c7030b81
NC
1859 {
1860 const char *s;
6224f72b
GS
1861 for (argc--,argv++; argc > 0; argc--,argv++) {
1862 if (argv[0][0] != '-' || !argv[0][1])
1863 break;
6224f72b
GS
1864 s = argv[0]+1;
1865 reswitch:
47f56822 1866 switch ((c = *s)) {
729a02f2 1867 case 'C':
1d5472a9
GS
1868#ifndef PERL_STRICT_CR
1869 case '\r':
1870#endif
6224f72b
GS
1871 case ' ':
1872 case '0':
1873 case 'F':
1874 case 'a':
1875 case 'c':
1876 case 'd':
1877 case 'D':
1878 case 'h':
1879 case 'i':
1880 case 'l':
1881 case 'M':
1882 case 'm':
1883 case 'n':
1884 case 'p':
1885 case 's':
1886 case 'u':
1887 case 'U':
1888 case 'v':
599cee73
PM
1889 case 'W':
1890 case 'X':
6224f72b 1891 case 'w':
97bd5664 1892 if ((s = moreswitches(s)))
6224f72b
GS
1893 goto reswitch;
1894 break;
33b78306 1895
1dbad523 1896 case 't':
dc6d7f5c 1897#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1898 /* silently ignore */
dc6d7f5c 1899#elif defined(NO_TAINT_SUPPORT)
3231f579 1900 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1901 "Cowardly refusing to run with -t or -T flags");
1902#else
22f7c9c9 1903 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1904 if( !TAINTING_get ) {
1905 TAINT_WARN_set(TRUE);
1906 TAINTING_set(TRUE);
317ea90d 1907 }
284167a5 1908#endif
317ea90d
MS
1909 s++;
1910 goto reswitch;
6224f72b 1911 case 'T':
dc6d7f5c 1912#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1913 /* silently ignore */
dc6d7f5c 1914#elif defined(NO_TAINT_SUPPORT)
3231f579 1915 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1916 "Cowardly refusing to run with -t or -T flags");
1917#else
22f7c9c9 1918 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1919 TAINTING_set(TRUE);
1920 TAINT_WARN_set(FALSE);
1921#endif
6224f72b
GS
1922 s++;
1923 goto reswitch;
f86702cc 1924
bc9b29db
RH
1925 case 'E':
1926 PL_minus_E = TRUE;
924ba076 1927 /* FALLTHROUGH */
6224f72b 1928 case 'e':
f20b2998 1929 forbid_setid('e', FALSE);
3280af22 1930 if (!PL_e_script) {
396482e1 1931 PL_e_script = newSVpvs("");
5486870f 1932 add_read_e_script = TRUE;
6224f72b
GS
1933 }
1934 if (*++s)
3280af22 1935 sv_catpv(PL_e_script, s);
6224f72b 1936 else if (argv[1]) {
3280af22 1937 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1938 argc--,argv++;
1939 }
1940 else
47f56822 1941 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1942 sv_catpvs(PL_e_script, "\n");
6224f72b 1943 break;
afe37c7d 1944
20ef40cf 1945 case 'f':
f5542d3a 1946#ifdef USE_SITECUSTOMIZE
20ef40cf 1947 minus_f = TRUE;
f5542d3a 1948#endif
20ef40cf
GA
1949 s++;
1950 goto reswitch;
1951
6224f72b 1952 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1953 forbid_setid('I', FALSE);
bd61b366 1954 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1955 argc--,argv++;
1956 }
6224f72b 1957 if (s && *s) {
0df16ed7 1958 STRLEN len = strlen(s);
55b4bc1c 1959 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1960 }
1961 else
a67e862a 1962 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1963 break;
6224f72b 1964 case 'S':
f20b2998 1965 forbid_setid('S', FALSE);
6224f72b
GS
1966 dosearch = TRUE;
1967 s++;
1968 goto reswitch;
1969 case 'V':
7edfd0ef
NC
1970 {
1971 SV *opts_prog;
1972
7edfd0ef 1973 if (*++s != ':') {
37ca4a5b 1974 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1975 }
1976 else {
1977 ++s;
1978 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1979 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1980 0, s, 0);
1981 s += strlen(s);
1982 }
37ca4a5b 1983 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1984 /* don't look for script or read stdin */
1985 scriptname = BIT_BUCKET;
1986 goto reswitch;
6224f72b 1987 }
6224f72b 1988 case 'x':
737c24fc 1989 doextract = TRUE;
6224f72b 1990 s++;
304334da 1991 if (*s)
f4c556ac 1992 cddir = s;
6224f72b
GS
1993 break;
1994 case 0:
1995 break;
1996 case '-':
1997 if (!*++s || isSPACE(*s)) {
1998 argc--,argv++;
1999 goto switch_end;
2000 }
ee8bc8b7
NC
2001 /* catch use of gnu style long options.
2002 Both of these exit immediately. */
2003 if (strEQ(s, "version"))
2004 minus_v();
2005 if (strEQ(s, "help"))
2006 usage();
6224f72b 2007 s--;
924ba076 2008 /* FALLTHROUGH */
6224f72b 2009 default:
cea2e8a9 2010 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2011 }
2012 }
c7030b81
NC
2013 }
2014
6224f72b 2015 switch_end:
54310121 2016
c7030b81
NC
2017 {
2018 char *s;
2019
f675dbe5
CB
2020 if (
2021#ifndef SECURE_INTERNAL_GETENV
284167a5 2022 !TAINTING_get &&
f675dbe5 2023#endif
cf756827 2024 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2025 {
9e0b0d62
KW
2026 /* s points to static memory in getenv(), which may be overwritten at
2027 * any time; use a mortal copy instead */
2028 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2029
74288ac8
GS
2030 while (isSPACE(*s))
2031 s++;
317ea90d 2032 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2033#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2034 /* silently ignore */
dc6d7f5c 2035#elif defined(NO_TAINT_SUPPORT)
3231f579 2036 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2037 "Cowardly refusing to run with -t or -T flags");
2038#else
22f7c9c9 2039 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2040 TAINTING_set(TRUE);
2041 TAINT_WARN_set(FALSE);
2042#endif
317ea90d 2043 }
74288ac8 2044 else {
bd61b366 2045 char *popt_copy = NULL;
74288ac8 2046 while (s && *s) {
54913509 2047 const char *d;
74288ac8
GS
2048 while (isSPACE(*s))
2049 s++;
2050 if (*s == '-') {
2051 s++;
2052 if (isSPACE(*s))
2053 continue;
2054 }
4ea8f8fb 2055 d = s;
74288ac8
GS
2056 if (!*s)
2057 break;
2b622f1a 2058 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2059 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2060 while (++s && *s) {
2061 if (isSPACE(*s)) {
cf756827 2062 if (!popt_copy) {
bfa6c418
NC
2063 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2064 s = popt_copy + (s - d);
2065 d = popt_copy;
cf756827 2066 }
4ea8f8fb
MS
2067 *s++ = '\0';
2068 break;
2069 }
2070 }
1c4db469 2071 if (*d == 't') {
dc6d7f5c 2072#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2073 /* silently ignore */
dc6d7f5c 2074#elif defined(NO_TAINT_SUPPORT)
3231f579 2075 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2076 "Cowardly refusing to run with -t or -T flags");
2077#else
2078 if( !TAINTING_get) {
2079 TAINT_WARN_set(TRUE);
2080 TAINTING_set(TRUE);
317ea90d 2081 }
284167a5 2082#endif
1c4db469 2083 } else {
97bd5664 2084 moreswitches(d);
1c4db469 2085 }
6224f72b 2086 }
6224f72b
GS
2087 }
2088 }
c7030b81 2089 }
a0d0e21e 2090
c29067d7
CH
2091 /* Set $^X early so that it can be used for relocatable paths in @INC */
2092 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2093 assert (!TAINT_get);
c29067d7 2094 TAINT;
e2051532 2095 set_caret_X();
c29067d7
CH
2096 TAINT_NOT;
2097
43c0c913 2098#if defined(USE_SITECUSTOMIZE)
20ef40cf 2099 if (!minus_f) {
43c0c913 2100 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2101 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2102 ie a q() operator with a NUL byte as a the delimiter. This avoids
2103 problems with pathnames containing (say) ' */
43c0c913
NC
2104# ifdef PERL_IS_MINIPERL
2105 AV *const inc = GvAV(PL_incgv);
2106 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2107
2108 if (inc0) {
15870c5c
NC
2109 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2110 it should be reported immediately as a build failure. */
43c0c913
NC
2111 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2112 Perl_newSVpvf(aTHX_
5de87db5 2113 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2114 "do {local $!; -f $f }"
2115 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2116 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2117 }
2118# else
2119 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2120 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2121 if (raw_sitelib) {
2122 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2123 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2124 INCPUSH_CAN_RELOCATE);
2125 const char *const sitelib = SvPVX(sitelib_sv);
2126 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2127 Perl_newSVpvf(aTHX_
2128 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2129 0, SVfARG(sitelib), 0,
2130 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2131 assert (SvREFCNT(sitelib_sv) == 1);
2132 SvREFCNT_dec(sitelib_sv);
2133 }
43c0c913 2134# endif
20ef40cf
GA
2135 }
2136#endif
2137
6224f72b
GS
2138 if (!scriptname)
2139 scriptname = argv[0];
3280af22 2140 if (PL_e_script) {
6224f72b
GS
2141 argc++,argv--;
2142 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2143 }
bd61b366 2144 else if (scriptname == NULL) {
6224f72b
GS
2145#ifdef MSDOS
2146 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2147 moreswitches("h");
6224f72b
GS
2148#endif
2149 scriptname = "-";
2150 }
2151
284167a5 2152 assert (!TAINT_get);
2cace6ac 2153 init_perllib();
6224f72b 2154
a52eba0e 2155 {
f20b2998 2156 bool suidscript = FALSE;
829372d3 2157
8d113837 2158 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2159 if (!rsfp) {
2160 rsfp = PerlIO_stdin();
87606032 2161 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2162 }
6224f72b 2163
b24bc095 2164 validate_suid(rsfp);
6224f72b 2165
64ca3a65 2166#ifndef PERL_MICRO
a52eba0e
NC
2167# if defined(SIGCHLD) || defined(SIGCLD)
2168 {
2169# ifndef SIGCHLD
2170# define SIGCHLD SIGCLD
2171# endif
2172 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2173 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2174 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2175 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2176 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2177 }
0b5b802d 2178 }
a52eba0e 2179# endif
64ca3a65 2180#endif
0b5b802d 2181
737c24fc 2182 if (doextract) {
faef540c 2183
f20b2998 2184 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2185 setuid scripts. */
2186 forbid_setid('x', suidscript);
f20b2998 2187 /* Hence you can't get here if suidscript is true */
faef540c 2188
95670bde
NC
2189 linestr_sv = newSV_type(SVt_PV);
2190 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2191 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2192 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2193 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2194 }
f4c556ac 2195 }
6224f72b 2196
ea726b52 2197 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2198 CvUNIQUE_on(PL_compcv);
2199
eacbb379 2200 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2201
dd69841b
BB
2202 PL_isarev = newHV();
2203
0c4f7ff0 2204 boot_core_PerlIO();
6224f72b 2205 boot_core_UNIVERSAL();
e1a479c5 2206 boot_core_mro();
4a5df386 2207 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2208
2209 if (xsinit)
acfe0abc 2210 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2211#ifndef PERL_MICRO
739a0b84 2212#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2213 init_os_extras();
6224f72b 2214#endif
64ca3a65 2215#endif
6224f72b 2216
29209bc5 2217#ifdef USE_SOCKS
1b9c9cf5
DH
2218# ifdef HAS_SOCKS5_INIT
2219 socks5_init(argv[0]);
2220# else
29209bc5 2221 SOCKSinit(argv[0]);
1b9c9cf5 2222# endif
ac27b0f5 2223#endif
29209bc5 2224
6224f72b
GS
2225 init_predump_symbols();
2226 /* init_postdump_symbols not currently designed to be called */
2227 /* more than once (ENV isn't cleared first, for example) */
2228 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2229 if (!PL_do_undump)
6224f72b
GS
2230 init_postdump_symbols(argc,argv,env);
2231
27da23d5
JH
2232 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2233 * or explicitly in some platforms.
085a54d9 2234 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2235 * look like the user wants to use UTF-8. */
a0fd4948 2236#if defined(__SYMBIAN32__)
27da23d5
JH
2237 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2238#endif
e27b5b51 2239# ifndef PERL_IS_MINIPERL
06e66572
JH
2240 if (PL_unicode) {
2241 /* Requires init_predump_symbols(). */
a05d7ebb 2242 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2243 IO* io;
2244 PerlIO* fp;
2245 SV* sv;
2246
a05d7ebb 2247 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2248 * and the default open disciplines. */
a05d7ebb
JH
2249 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2250 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2251 (fp = IoIFP(io)))
2252 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2253 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2254 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2255 (fp = IoOFP(io)))
2256 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2257 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2258 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2259 (fp = IoOFP(io)))
2260 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2261 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2262 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2263 SVt_PV)))) {
a05d7ebb
JH
2264 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2265 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2266 if (in) {
2267 if (out)
76f68e9b 2268 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2269 else
76f68e9b 2270 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2271 }
2272 else if (out)
76f68e9b 2273 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2274 SvSETMAGIC(sv);
2275 }
b310b053
JH
2276 }
2277 }
e27b5b51 2278#endif
b310b053 2279
c7030b81
NC
2280 {
2281 const char *s;
4ffa73a3
JH
2282 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2283 if (strEQ(s, "unsafe"))
2284 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2285 else if (strEQ(s, "safe"))
2286 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2287 else
2288 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2289 }
c7030b81 2290 }
4ffa73a3 2291
81d86705 2292
87606032 2293 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2294 SvREFCNT_dec(linestr_sv);
95670bde 2295
219f7226 2296 PL_subname = newSVpvs("main");
6224f72b 2297
5486870f
DM
2298 if (add_read_e_script)
2299 filter_add(read_e_script, NULL);
2300
6224f72b
GS
2301 /* now parse the script */
2302
93189314 2303 SETERRNO(0,SS_NORMAL);
28ac2b49 2304 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2305 if (PL_minus_c)
cea2e8a9 2306 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2307 else {
cea2e8a9 2308 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2309 PL_origfilename);
6224f72b
GS
2310 }
2311 }
57843af0 2312 CopLINE_set(PL_curcop, 0);
03d9f026 2313 SET_CURSTASH(PL_defstash);
3280af22
NIS
2314 if (PL_e_script) {
2315 SvREFCNT_dec(PL_e_script);
a0714e2c 2316 PL_e_script = NULL;
6224f72b
GS
2317 }
2318
3280af22 2319 if (PL_do_undump)
6224f72b
GS
2320 my_unexec();
2321
57843af0
GS
2322 if (isWARN_ONCE) {
2323 SAVECOPFILE(PL_curcop);
2324 SAVECOPLINE(PL_curcop);
3280af22 2325 gv_check(PL_defstash);
57843af0 2326 }
6224f72b
GS
2327
2328 LEAVE;
2329 FREETMPS;
2330
2331#ifdef MYMALLOC
f6a607bc
RGS
2332 {
2333 const char *s;
22ff3130
HS
2334 UV uv;
2335 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2336 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2337 dump_mstats("after compilation:");
f6a607bc 2338 }
6224f72b
GS
2339#endif
2340
2341 ENTER;
febb3a6d 2342 PL_restartjmpenv = NULL;
3280af22 2343 PL_restartop = 0;
312caa8e 2344 return NULL;
6224f72b
GS
2345}
2346
954c1994
GS
2347/*
2348=for apidoc perl_run
2349
2350Tells a Perl interpreter to run. See L<perlembed>.
2351
2352=cut
2353*/
2354
6224f72b 2355int
0cb96387 2356perl_run(pTHXx)
6224f72b 2357{
6224f72b 2358 I32 oldscope;
14dd3ad8 2359 int ret = 0;
db36c5a1 2360 dJMPENV;
6224f72b 2361
7918f24d
NC
2362 PERL_ARGS_ASSERT_PERL_RUN;
2363#ifndef MULTIPLICITY
ed6c66dd 2364 PERL_UNUSED_ARG(my_perl);
7918f24d 2365#endif
9d4ba2ae 2366
3280af22 2367 oldscope = PL_scopestack_ix;
96e176bf
CL
2368#ifdef VMS
2369 VMSISH_HUSHED = 0;
2370#endif
6224f72b 2371
14dd3ad8 2372 JMPENV_PUSH(ret);
6224f72b
GS
2373 switch (ret) {
2374 case 1:
2375 cxstack_ix = -1; /* start context stack again */
312caa8e 2376 goto redo_body;
14dd3ad8 2377 case 0: /* normal completion */
14dd3ad8
GS
2378 redo_body:
2379 run_body(oldscope);
924ba076 2380 /* FALLTHROUGH */
14dd3ad8 2381 case 2: /* my_exit() */
3280af22 2382 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2383 LEAVE;
2384 FREETMPS;
03d9f026 2385 SET_CURSTASH(PL_defstash);
3a1ee7e8 2386 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2387 PL_endav && !PL_minus_c) {
ca7b837b 2388 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2389 call_list(oldscope, PL_endav);
9ebf26ad 2390 }
6224f72b
GS
2391#ifdef MYMALLOC
2392 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2393 dump_mstats("after execution: ");
2394#endif
37038d91 2395 ret = STATUS_EXIT;
14dd3ad8 2396 break;
6224f72b 2397 case 3:
312caa8e
CS
2398 if (PL_restartop) {
2399 POPSTACK_TO(PL_mainstack);
2400 goto redo_body;
6224f72b 2401 }
5637ef5b 2402 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2403 FREETMPS;
14dd3ad8
GS
2404 ret = 1;
2405 break;
6224f72b
GS
2406 }
2407
14dd3ad8
GS
2408 JMPENV_POP;
2409 return ret;
312caa8e
CS
2410}
2411
dd374669 2412STATIC void
14dd3ad8
GS
2413S_run_body(pTHX_ I32 oldscope)
2414{
d3b97530
DM
2415 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2416 PL_sawampersand ? "Enabling" : "Omitting",
2417 (unsigned int)(PL_sawampersand)));
6224f72b 2418
3280af22 2419 if (!PL_restartop) {
cf2782cd 2420#ifdef DEBUGGING
f0e3f042
CS
2421 if (DEBUG_x_TEST || DEBUG_B_TEST)
2422 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2423 if (!DEBUG_q_TEST)
2424 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2425#endif
6224f72b 2426
3280af22 2427 if (PL_minus_c) {
bf49b057 2428 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2429 my_exit(0);
2430 }
3280af22 2431 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2432 PL_DBsingle_iv = 1;
9ebf26ad 2433 if (PL_initav) {
ca7b837b 2434 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2435 call_list(oldscope, PL_initav);
9ebf26ad 2436 }
f1fac472 2437#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2438 if (PL_main_root && PL_main_root->op_slabbed)
2439 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2440#endif
6224f72b
GS
2441 }
2442
2443 /* do it */
2444
ca7b837b 2445 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2446
3280af22 2447 if (PL_restartop) {
febb3a6d 2448 PL_restartjmpenv = NULL;
533c011a 2449 PL_op = PL_restartop;
3280af22 2450 PL_restartop = 0;
cea2e8a9 2451 CALLRUNOPS(aTHX);
6224f72b 2452 }
3280af22
NIS
2453 else if (PL_main_start) {
2454 CvDEPTH(PL_main_cv) = 1;
533c011a 2455 PL_op = PL_main_start;
cea2e8a9 2456 CALLRUNOPS(aTHX);
6224f72b 2457 }
f6b3007c 2458 my_exit(0);
e5964223 2459 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2460}
2461
954c1994 2462/*
ccfc67b7
JH
2463=head1 SV Manipulation Functions
2464
954c1994
GS
2465=for apidoc p||get_sv
2466
64ace3f8 2467Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2468C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2469Perl variable does not exist then it will be created. If C<flags> is zero
2470and the variable does not exist then NULL is returned.
954c1994
GS
2471
2472=cut
2473*/
2474
6224f72b 2475SV*
64ace3f8 2476Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2477{
2478 GV *gv;
7918f24d
NC
2479
2480 PERL_ARGS_ASSERT_GET_SV;
2481
64ace3f8 2482 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2483 if (gv)
2484 return GvSV(gv);
a0714e2c 2485 return NULL;
6224f72b
GS
2486}
2487
954c1994 2488/*
ccfc67b7
JH
2489=head1 Array Manipulation Functions
2490
954c1994
GS
2491=for apidoc p||get_av
2492
f0b90de1
SF
2493Returns the AV of the specified Perl global or package array with the given
2494name (so it won't work on lexical variables). C<flags> are passed
72d33970 2495to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2496Perl variable does not exist then it will be created. If C<flags> is zero
2497and the variable does not exist then NULL is returned.
954c1994 2498
f0b90de1
SF
2499Perl equivalent: C<@{"$name"}>.
2500
954c1994
GS
2501=cut
2502*/
2503
6224f72b 2504AV*
cbfd0a87 2505Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2506{
cbfd0a87 2507 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2508
2509 PERL_ARGS_ASSERT_GET_AV;
2510
cbfd0a87 2511 if (flags)
6224f72b
GS
2512 return GvAVn(gv);
2513 if (gv)
2514 return GvAV(gv);
7d49f689 2515 return NULL;
6224f72b
GS
2516}
2517
954c1994 2518/*
ccfc67b7
JH
2519=head1 Hash Manipulation Functions
2520
954c1994
GS
2521=for apidoc p||get_hv
2522
6673a63c 2523Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2524C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2525Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2526and the variable does not exist then C<NULL> is returned.
954c1994
GS
2527
2528=cut
2529*/
2530
6224f72b 2531HV*
6673a63c 2532Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2533{
6673a63c 2534 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2535
2536 PERL_ARGS_ASSERT_GET_HV;
2537
6673a63c 2538 if (flags)
a0d0e21e
LW
2539 return GvHVn(gv);
2540 if (gv)
2541 return GvHV(gv);
5c284bb0 2542 return NULL;
a0d0e21e
LW
2543}
2544
954c1994 2545/*
ccfc67b7
JH
2546=head1 CV Manipulation Functions
2547
780a5241
NC
2548=for apidoc p||get_cvn_flags
2549
2550Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2551C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2552exist then it will be declared (which has the same effect as saying
2553C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2554then NULL is returned.
2555
954c1994
GS
2556=for apidoc p||get_cv
2557
780a5241 2558Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2559
2560=cut
2561*/
2562
a0d0e21e 2563CV*
780a5241 2564Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2565{
780a5241 2566 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2567
2568 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2569
334dda80
FC
2570 /* XXX this is probably not what they think they're getting.
2571 * It has the same effect as "sub name;", i.e. just a forward
2572 * declaration! */
780a5241 2573 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2574 return newSTUB(gv,0);
780a5241 2575 }
a0d0e21e 2576 if (gv)
8ebc5c01 2577 return GvCVu(gv);
601f1833 2578 return NULL;
a0d0e21e
LW
2579}
2580
2c67934f
NC
2581/* Nothing in core calls this now, but we can't replace it with a macro and
2582 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2583CV*
2584Perl_get_cv(pTHX_ const char *name, I32 flags)
2585{
7918f24d
NC
2586 PERL_ARGS_ASSERT_GET_CV;
2587
780a5241
NC
2588 return get_cvn_flags(name, strlen(name), flags);
2589}
2590
79072805
LW
2591/* Be sure to refetch the stack pointer after calling these routines. */
2592
954c1994 2593/*
ccfc67b7
JH
2594
2595=head1 Callback Functions
2596
954c1994
GS
2597=for apidoc p||call_argv
2598
f0b90de1 2599Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2600with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2601L<perlcall>.
f0b90de1
SF
2602
2603Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2604
2605=cut
2606*/
2607
a0d0e21e 2608I32
5aaab254 2609Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2610
8ac85365
NIS
2611 /* See G_* flags in cop.h */
2612 /* null terminated arg list */
8990e307 2613{
a0d0e21e 2614 dSP;
8990e307 2615
7918f24d
NC
2616 PERL_ARGS_ASSERT_CALL_ARGV;
2617
924508f0 2618 PUSHMARK(SP);
3dc78631
DM
2619 while (*argv) {
2620 mXPUSHs(newSVpv(*argv,0));
2621 argv++;
8990e307 2622 }
3dc78631 2623 PUTBACK;
864dbfa3 2624 return call_pv(sub_name, flags);
8990e307
LW
2625}
2626
954c1994
GS
2627/*
2628=for apidoc p||call_pv
2629
2630Performs a callback to the specified Perl sub. See L<perlcall>.
2631
2632=cut
2633*/
2634
a0d0e21e 2635I32
864dbfa3 2636Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2637 /* name of the subroutine */
2638 /* See G_* flags in cop.h */
a0d0e21e 2639{
7918f24d
NC
2640 PERL_ARGS_ASSERT_CALL_PV;
2641
0da0e728 2642 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2643}
2644
954c1994
GS
2645/*
2646=for apidoc p||call_method
2647
2648Performs a callback to the specified Perl method. The blessed object must
2649be on the stack. See L<perlcall>.
2650
2651=cut
2652*/
2653
a0d0e21e 2654I32
864dbfa3 2655Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2656 /* name of the subroutine */
2657 /* See G_* flags in cop.h */
a0d0e21e 2658{
46ca9bac 2659 STRLEN len;
c106c2be 2660 SV* sv;
7918f24d
NC
2661 PERL_ARGS_ASSERT_CALL_METHOD;
2662
46ca9bac 2663 len = strlen(methname);
c106c2be
RZ
2664 sv = flags & G_METHOD_NAMED
2665 ? sv_2mortal(newSVpvn_share(methname, len,0))
2666 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2667
c106c2be 2668 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2669}
2670
2671/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2672/*
2673=for apidoc p||call_sv
2674
078e2213
TC
2675Performs a callback to the Perl sub specified by the SV.
2676
7c0c544c 2677If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2678SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2679or C<SvPV(sv)> will be used as the name of the sub to call.
2680
2681If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2682C<SvPV(sv)> will be used as the name of the method to call.
2683
2684If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2685the name of the method to call.
2686
2687Some other values are treated specially for internal use and should
2688not be depended on.
2689
2690See L<perlcall>.
954c1994
GS
2691
2692=cut
2693*/
2694
a0d0e21e 2695I32
001d637e 2696Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2697 /* See G_* flags in cop.h */
a0d0e21e 2698{
27da23d5 2699 dVAR; dSP;
a0d0e21e 2700 LOGOP myop; /* fake syntax tree node */
b46e009d 2701 METHOP method_op;
aa689395 2702 I32 oldmark;
8ea43dc8 2703 VOL I32 retval = 0;
a0d0e21e 2704 I32 oldscope;
54310121 2705 bool oldcatch = CATCH_GET;
6224f72b 2706 int ret;
c4420975 2707 OP* const oldop = PL_op;
db36c5a1 2708 dJMPENV;
1e422769 2709
7918f24d
NC
2710 PERL_ARGS_ASSERT_CALL_SV;
2711
a0d0e21e
LW
2712 if (flags & G_DISCARD) {
2713 ENTER;
2714 SAVETMPS;
2715 }
2f8edad0
NC
2716 if (!(flags & G_WANT)) {
2717 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2718 */
2719 flags |= G_SCALAR;
2720 }
a0d0e21e 2721
aa689395 2722 Zero(&myop, 1, LOGOP);
f51d4af5 2723 if (!(flags & G_NOARGS))
aa689395 2724 myop.op_flags |= OPf_STACKED;
4f911530 2725 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2726 SAVEOP();
533c011a 2727 PL_op = (OP*)&myop;
aa689395 2728
3280af22 2729 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2730 if (!(flags & G_METHOD_NAMED))
2731 *++PL_stack_sp = sv;
aa689395 2732 oldmark = TOPMARK;
3280af22 2733 oldscope = PL_scopestack_ix;
a0d0e21e 2734
3280af22 2735 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2736 /* Handle first BEGIN of -d. */
3280af22 2737 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2738 /* Try harder, since this may have been a sighandler, thus
2739 * curstash may be meaningless. */
ea726b52 2740 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2741 && !(flags & G_NODEBUG))
5ff48db8 2742 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2743
c106c2be 2744 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2745 Zero(&method_op, 1, METHOP);
2746 method_op.op_next = (OP*)&myop;
2747 PL_op = (OP*)&method_op;
c106c2be 2748 if ( flags & G_METHOD_NAMED ) {
b46e009d 2749 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2750 method_op.op_type = OP_METHOD_NAMED;
2751 method_op.op_u.op_meth_sv = sv;
c106c2be 2752 } else {
b46e009d 2753 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2754 method_op.op_type = OP_METHOD;
c106c2be
RZ
2755 }
2756 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2757 myop.op_type = OP_ENTERSUB;
968b3946
GS
2758 }
2759
312caa8e 2760 if (!(flags & G_EVAL)) {
0cdb2077 2761 CATCH_SET(TRUE);
d6f07c05 2762 CALL_BODY_SUB((OP*)&myop);
312caa8e 2763 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2764 CATCH_SET(oldcatch);
312caa8e
CS
2765 }
2766 else {
d78bda3d 2767 myop.op_other = (OP*)&myop;
3280af22 2768 PL_markstack_ptr--;
edb2152a 2769 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2770 PL_markstack_ptr++;
a0d0e21e 2771
14dd3ad8 2772 JMPENV_PUSH(ret);
edb2152a 2773
6224f72b
GS
2774 switch (ret) {
2775 case 0:
14dd3ad8 2776 redo_body:
d6f07c05 2777 CALL_BODY_SUB((OP*)&myop);
312caa8e 2778 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2779 if (!(flags & G_KEEPERR)) {
ab69dbc2 2780 CLEAR_ERRSV();
8433848b 2781 }
a0d0e21e 2782 break;
6224f72b 2783 case 1:
f86702cc 2784 STATUS_ALL_FAILURE;
924ba076 2785 /* FALLTHROUGH */
6224f72b 2786 case 2:
a0d0e21e 2787 /* my_exit() was called */
03d9f026 2788 SET_CURSTASH(PL_defstash);
a0d0e21e 2789 FREETMPS;
14dd3ad8 2790 JMPENV_POP;
f86702cc 2791 my_exit_jump();
e5964223 2792 NOT_REACHED; /* NOTREACHED */
6224f72b 2793 case 3:
3280af22 2794 if (PL_restartop) {
febb3a6d 2795 PL_restartjmpenv = NULL;
533c011a 2796 PL_op = PL_restartop;
3280af22 2797 PL_restartop = 0;
312caa8e 2798 goto redo_body;
a0d0e21e 2799 }
3280af22 2800 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2801 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2802 retval = 0;
2803 else {
2804 retval = 1;
3280af22 2805 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2806 }
312caa8e 2807 break;
a0d0e21e 2808 }
a0d0e21e 2809
edb2152a
NC
2810 if (PL_scopestack_ix > oldscope)
2811 delete_eval_scope();
14dd3ad8 2812 JMPENV_POP;
a0d0e21e 2813 }
1e422769 2814
a0d0e21e 2815 if (flags & G_DISCARD) {
3280af22 2816 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2817 retval = 0;
2818 FREETMPS;
2819 LEAVE;
2820 }
533c011a 2821 PL_op = oldop;
a0d0e21e
LW
2822 return retval;
2823}
2824
6e72f9df 2825/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2826
954c1994
GS
2827/*
2828=for apidoc p||eval_sv
2829
72d33970 2830Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2831as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2832
2833=cut
2834*/
2835
a0d0e21e 2836I32
864dbfa3 2837Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2838
8ac85365 2839 /* See G_* flags in cop.h */
a0d0e21e 2840{
97aff369 2841 dVAR;
924508f0 2842 dSP;
a0d0e21e 2843 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2844 VOL I32 oldmark = SP - PL_stack_base;
2845 VOL I32 retval = 0;
6224f72b 2846 int ret;
c4420975 2847 OP* const oldop = PL_op;
db36c5a1 2848 dJMPENV;
84902520 2849
7918f24d
NC
2850 PERL_ARGS_ASSERT_EVAL_SV;
2851
4633a7c4
LW
2852 if (flags & G_DISCARD) {
2853 ENTER;
2854 SAVETMPS;
2855 }
2856
462e5cf6 2857 SAVEOP();
533c011a 2858 PL_op = (OP*)&myop;
5ff48db8 2859 Zero(&myop, 1, UNOP);
3280af22
NIS
2860 EXTEND(PL_stack_sp, 1);
2861 *++PL_stack_sp = sv;
79072805 2862
4633a7c4
LW
2863 if (!(flags & G_NOARGS))
2864 myop.op_flags = OPf_STACKED;
6e72f9df 2865 myop.op_type = OP_ENTEREVAL;
4f911530 2866 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2867 if (flags & G_KEEPERR)
2868 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2869
2870 if (flags & G_RE_REPARSING)
2871 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2872
dedbcade
DM
2873 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2874 * before a PUSHEVAL, which corrupts the stack after a croak */
2875 TAINT_PROPER("eval_sv()");
2876
14dd3ad8 2877 JMPENV_PUSH(ret);
6224f72b
GS
2878 switch (ret) {
2879 case 0:
14dd3ad8 2880 redo_body:
2ba65d5f
DM
2881 if (PL_op == (OP*)(&myop)) {
2882 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2883 if (!PL_op)
2884 goto fail; /* failed in compilation */
2885 }
4aca2f62 2886 CALLRUNOPS(aTHX);
312caa8e 2887 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2888 if (!(flags & G_KEEPERR)) {
ab69dbc2 2889 CLEAR_ERRSV();
8433848b 2890 }
4633a7c4 2891 break;
6224f72b 2892 case 1:
f86702cc 2893 STATUS_ALL_FAILURE;
924ba076 2894 /* FALLTHROUGH */
6224f72b 2895 case 2:
4633a7c4 2896 /* my_exit() was called */
03d9f026 2897 SET_CURSTASH(PL_defstash);
4633a7c4 2898 FREETMPS;
14dd3ad8 2899 JMPENV_POP;
f86702cc 2900 my_exit_jump();
e5964223 2901 NOT_REACHED; /* NOTREACHED */
6224f72b 2902 case 3:
3280af22 2903 if (PL_restartop) {
febb3a6d 2904 PL_restartjmpenv = NULL;
533c011a 2905 PL_op = PL_restartop;
3280af22 2906 PL_restartop = 0;
312caa8e 2907 goto redo_body;
4633a7c4 2908 }
4aca2f62 2909 fail:
3280af22 2910 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2911 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2912 retval = 0;
2913 else {
2914 retval = 1;
3280af22 2915 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2916 }
312caa8e 2917 break;
4633a7c4
LW
2918 }
2919
14dd3ad8 2920 JMPENV_POP;
4633a7c4 2921 if (flags & G_DISCARD) {
3280af22 2922 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2923 retval = 0;
2924 FREETMPS;
2925 LEAVE;
2926 }
533c011a 2927 PL_op = oldop;
4633a7c4
LW
2928 return retval;
2929}
2930
954c1994
GS
2931/*
2932=for apidoc p||eval_pv
2933
422791e4 2934Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2935
2936=cut
2937*/
2938
137443ea 2939SV*
864dbfa3 2940Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2941{
137443ea
PP
2942 SV* sv = newSVpv(p, 0);
2943
7918f24d
NC
2944 PERL_ARGS_ASSERT_EVAL_PV;
2945
864dbfa3 2946 eval_sv(sv, G_SCALAR);
137443ea
PP
2947 SvREFCNT_dec(sv);
2948
ed1786ad
DD
2949 {
2950 dSP;
2951 sv = POPs;
2952 PUTBACK;
2953 }
137443ea 2954
eed484f9
DD
2955 /* just check empty string or undef? */
2956 if (croak_on_error) {
2957 SV * const errsv = ERRSV;
2958 if(SvTRUE_NN(errsv))
2959 /* replace with croak_sv? */
2960 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2961 }
137443ea
PP
2962
2963 return sv;
2964}
2965
4633a7c4
LW
2966/* Require a module. */
2967
954c1994 2968/*
ccfc67b7
JH
2969=head1 Embedding Functions
2970
954c1994
GS
2971=for apidoc p||require_pv
2972
7d3fb230
BS
2973Tells Perl to C<require> the file named by the string argument. It is
2974analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2975implemented that way; consider using load_module instead.
954c1994 2976
7d3fb230 2977=cut */
954c1994 2978
4633a7c4 2979void
864dbfa3 2980Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2981{
d3acc0f7 2982 dSP;
97aff369 2983 SV* sv;
7918f24d
NC
2984
2985 PERL_ARGS_ASSERT_REQUIRE_PV;
2986
e788e7d3 2987 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2988 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2989 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2990 POPSTACK;
79072805
LW
2991}
2992
76e3520e 2993STATIC void
b6f82619 2994S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2995{
ab821d7f 2996 /* This message really ought to be max 23 lines.
75c72d73 2997 * Removed -h because the user already knows that option. Others? */
fb73857a 2998
1566c39d
NC
2999 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3000 minimum of 509 character string literals. */
27da23d5 3001 static const char * const usage_msg[] = {
1566c39d
NC
3002" -0[octal] specify record separator (\\0, if no argument)\n"
3003" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3004" -C[number/list] enables the listed Unicode features\n"
3005" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3006" -d[:debugger] run program under debugger\n"
3007" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3008" -e program one line of program (several -e's allowed, omit programfile)\n"
3009" -E program like -e, but enables all optional features\n"
3010" -f don't do $sitelib/sitecustomize.pl at startup\n"
3011" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3012" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3013" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3014" -l[octal] enable line ending processing, specifies line terminator\n"
3015" -[mM][-]module execute \"use/no module...\" before executing program\n"
3016" -n assume \"while (<>) { ... }\" loop around program\n"
3017" -p assume loop like -n but print line also, like sed\n"
3018" -s enable rudimentary parsing for switches after programfile\n"
3019" -S look for programfile using PATH environment variable\n",
3020" -t enable tainting warnings\n"
3021" -T enable tainting checks\n"
3022" -u dump core after parsing program\n"
3023" -U allow unsafe operations\n"
3024" -v print version, patchlevel and license\n"
3025" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3026" -w enable many useful warnings\n"
1566c39d
NC
3027" -W enable all warnings\n"
3028" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3029" -X disable all warnings\n"
3030" \n"
3031"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3032NULL
3033};
27da23d5 3034 const char * const *p = usage_msg;
1566c39d 3035 PerlIO *out = PerlIO_stdout();
fb73857a 3036
1566c39d
NC
3037 PerlIO_printf(out,
3038 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3039 PL_origargv[0]);
fb73857a 3040 while (*p)
1566c39d 3041 PerlIO_puts(out, *p++);
b6f82619 3042 my_exit(0);
4633a7c4
LW
3043}
3044
b4ab917c
DM
3045/* convert a string of -D options (or digits) into an int.
3046 * sets *s to point to the char after the options */
3047
3048#ifdef DEBUGGING
3049int
e1ec3a88 3050Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3051{
27da23d5 3052 static const char * const usage_msgd[] = {
651b8f1a
NC
3053 " Debugging flag values: (see also -d)\n"
3054 " p Tokenizing and parsing (with v, displays parse stack)\n"
3055 " s Stack snapshots (with v, displays all stacks)\n"
3056 " l Context (loop) stack processing\n"
3057 " t Trace execution\n"
3058 " o Method and overloading resolution\n",
3059 " c String/numeric conversions\n"
3060 " P Print profiling info, source file input state\n"
3061 " m Memory and SV allocation\n"
3062 " f Format processing\n"
3063 " r Regular expression parsing and execution\n"
3064 " x Syntax tree dump\n",
3065 " u Tainting checks\n"
3066 " H Hash dump -- usurps values()\n"
3067 " X Scratchpad allocation\n"
3068 " D Cleaning up\n"
56967202 3069 " S Op slab allocation\n"
651b8f1a
NC
3070 " T Tokenising\n"
3071 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3072 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3073 " v Verbose: use in conjunction with other flags\n"
3074 " C Copy On Write\n"
3075 " A Consistency checks on internal structures\n"
3076 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3077 " M trace smart match resolution\n"
3078 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3079 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3080 NULL
3081 };
22ff3130 3082 UV uv = 0;
7918f24d
NC
3083
3084 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3085
b4ab917c
DM
3086 if (isALPHA(**s)) {
3087 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3088 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3089
0eb30aeb 3090 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3091 const char * const d = strchr(debopts,**s);
b4ab917c 3092 if (d)
22ff3130 3093 uv |= 1 << (d - debopts);
b4ab917c 3094 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3095 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3096 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3097 }
3098 }
e6e64d9b 3099 else if (isDIGIT(**s)) {
96e440d2 3100 const char* e;
22ff3130 3101 if (grok_atoUV(*s, &uv, &e))
96e440d2 3102 *s = e;
0eb30aeb 3103 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3104 }
ddcf8bc1 3105 else if (givehelp) {
06e869a4 3106 const char *const *p = usage_msgd;
651b8f1a 3107 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3108 }
22ff3130 3109 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3110}
3111#endif
3112
79072805
LW
3113/* This routine handles any switches that can be given during run */
3114
c7030b81
NC
3115const char *
3116Perl_moreswitches(pTHX_ const char *s)
79072805 3117{
27da23d5 3118 dVAR;
84c133a0 3119 UV rschar;
0544e6df 3120 const char option = *s; /* used to remember option in -m/-M code */
79072805 3121
7918f24d
NC
3122 PERL_ARGS_ASSERT_MORESWITCHES;
3123
79072805
LW
3124 switch (*s) {
3125 case '0':
a863c7d1 3126 {
f2095865 3127 I32 flags = 0;
a3b680e6 3128 STRLEN numlen;
f2095865
JH
3129
3130 SvREFCNT_dec(PL_rs);
3131 if (s[1] == 'x' && s[2]) {
a3b680e6 3132 const char *e = s+=2;
f2095865
JH
3133 U8 *tmps;
3134
a3b680e6
AL
3135 while (*e)
3136 e++;
f2095865
JH
3137 numlen = e - s;
3138 flags = PERL_SCAN_SILENT_ILLDIGIT;
3139 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3140 if (s + numlen < e) {
3141 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3142 numlen = 0;
3143 s--;
3144 }
396482e1 3145 PL_rs = newSVpvs("");
5f560d8a 3146 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865
JH
3147 tmps = (U8*)SvPVX(PL_rs);
3148 uvchr_to_utf8(tmps, rschar);
5f560d8a 3149 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3150 SvUTF8_on(PL_rs);
3151 }
3152 else {
3153 numlen = 4;
3154 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3155 if (rschar & ~((U8)~0))
3156 PL_rs = &PL_sv_undef;
3157 else if (!rschar && numlen >= 2)
396482e1 3158 PL_rs = newSVpvs("");
f2095865
JH
3159 else {
3160 char ch = (char)rschar;
3161 PL_rs = newSVpvn(&ch, 1);
3162 }
3163 }
64ace3f8 3164 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3165 return s + numlen;
a863c7d1 3166 }
46487f74 3167 case 'C':
a05d7ebb 3168 s++;
dd374669 3169 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3170 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3171 PL_utf8cache = -1;
46487f74 3172 return s;
2304df62 3173 case 'F':
5fc691f1 3174 PL_minus_a = TRUE;
3280af22 3175 PL_minus_F = TRUE;
24ffa309 3176 PL_minus_n = TRUE;
ebce5377
RGS
3177 PL_splitstr = ++s;
3178 while (*s && !isSPACE(*s)) ++s;
e49e380e 3179 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3180 return s;
79072805 3181 case 'a':
3280af22 3182 PL_minus_a = TRUE;
24ffa309 3183 PL_minus_n = TRUE;
79072805
LW
3184 s++;
3185 return s;
3186 case 'c':
3280af22 3187 PL_minus_c = TRUE;
79072805
LW
3188 s++;
3189 return s;
3190 case 'd':
f20b2998 3191 forbid_setid('d', FALSE);
4633a7c4 3192 s++;
2cbb2ee1
RGS
3193
3194 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3195 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3196 ++s;
3197 my_setenv("PERL5DB_THREADED", "1");
3198 }
3199
70c94a19
RR
3200 /* The following permits -d:Mod to accepts arguments following an =
3201 in the fashion that -MSome::Mod does. */
3202 if (*s == ':' || *s == '=') {
b19934fb
NC
3203 const char *start;
3204 const char *end;
3205 SV *sv;
3206
3207 if (*++s == '-') {
3208 ++s;
3209 sv = newSVpvs("no Devel::");
3210 } else {
3211 sv = newSVpvs("use Devel::");
3212 }
3213
3214 start = s;
3215 end = s + strlen(s);
f85893a1 3216
b19934fb 3217 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3218 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3219 if (*s != '=')
f85893a1 3220 sv_catpvn(sv, start, end - start);
70c94a19
RR
3221 else {
3222 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3223 /* Don't use NUL as q// delimiter here, this string goes in the
3224 * environment. */
3225 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3226 }
f85893a1 3227 s = end;
184f32ec 3228 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3229 SvREFCNT_dec(sv);
4633a7c4 3230 }
ed094faf 3231 if (!PL_perldb) {
3280af22 3232 PL_perldb = PERLDB_ALL;
a0d0e21e 3233 init_debugger();
ed094faf 3234 }
79072805
LW
3235 return s;
3236 case 'D':
0453d815 3237 {
79072805 3238#ifdef DEBUGGING
f20b2998 3239 forbid_setid('D', FALSE);
b4ab917c 3240 s++;
dd374669 3241 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3242#else /* !DEBUGGING */
0453d815 3243 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3244 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3245 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3246 for (s++; isWORDCHAR(*s); s++) ;
79072805 3247#endif
79072805 3248 return s;
2b5060ae 3249 NOT_REACHED; /* NOTREACHED */
0453d815 3250 }
4633a7c4 3251 case 'h':
b6f82619 3252 usage();
2b5060ae
DM
3253 NOT_REACHED; /* NOTREACHED */
3254
79072805 3255 case 'i':
43c5f42d 3256 Safefree(PL_inplace);
c030f24b
GH
3257#if defined(__CYGWIN__) /* do backup extension automagically */
3258 if (*(s+1) == '\0') {
c86a4f2e 3259 PL_inplace = savepvs(".bak");
c030f24b
GH
3260 return s+1;
3261 }
3262#endif /* __CYGWIN__ */
5ef5d758 3263 {
d4c19fe8 3264 const char * const start = ++s;
5ef5d758
NC
3265 while (*s && !isSPACE(*s))
3266 ++s;
3267
3268 PL_inplace = savepvn(start, s - start);
3269 }
7b8d334a 3270 if (*s) {
5ef5d758 3271 ++s;
7b8d334a 3272 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3273 s++;
7b8d334a 3274 }
fb73857a 3275 return s;
4e49a025 3276 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3277 forbid_setid('I', FALSE);
fb73857a
PP
3278 ++s;
3279 while (*s && isSPACE(*s))
3280 ++s;
3281 if (*s) {
c7030b81 3282 const char *e, *p;
0df16ed7
GS
3283 p = s;
3284 /* ignore trailing spaces (possibly followed by other switches) */
3285 do {
3286 for (e = p; *e && !isSPACE(*e); e++) ;
3287 p = e;
3288 while (isSPACE(*p))
3289 p++;
3290 } while (*p && *p != '-');
55b4bc1c 3291 incpush(s, e-s,
e28f3139 3292 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3293 s = p;
3294 if (*s == '-')
3295 s++;
79072805
LW
3296 }
3297 else
a67e862a 3298 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3299 return s;
79072805 3300 case 'l':
3280af22 3301 PL_minus_l = TRUE;
79072805 3302 s++;
7889fe52
NIS
3303 if (PL_ors_sv) {
3304 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3305 PL_ors_sv = NULL;
7889fe52 3306 }
79072805 3307 if (isDIGIT(*s)) {
53305cf1 3308 I32 flags = 0;
a3b680e6 3309 STRLEN numlen;
396482e1 3310 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3311 numlen = 3 + (*s == '0');
3312 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3313 s += numlen;
3314 }
3315 else {
8bfdd7d9 3316 if (RsPARA(PL_rs)) {
396482e1 3317 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3318 }
3319 else {
8bfdd7d9 3320 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3321 }
79072805
LW
3322 }
3323 return s;
1a30305b 3324 case 'M':
f20b2998 3325 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3326 /* FALLTHROUGH */
1a30305b 3327 case 'm':
f20b2998 3328 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3329 if (*++s) {
c7030b81 3330 const char *start;
b64cb68c 3331 const char *end;
11343788 3332 SV *sv;
e1ec3a88 3333 const char *use = "use ";
0544e6df 3334 bool colon = FALSE;
a5f75d66 3335 /* -M-foo == 'no foo' */
d0043bd1
NC
3336 /* Leading space on " no " is deliberate, to make both
3337 possibilities the same length. */
3338 if (*s == '-') { use = " no "; ++s; }
3339 sv = newSVpvn(use,4);
a5f75d66 3340 start = s;
1a30305b 3341 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3342 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3343 if( *s++ == ':' ) {
3344 if( *s == ':' )
3345 s++;
3346 else
3347 colon = TRUE;
3348 }
3349 }
3350 if (s == start)
3351 Perl_croak(aTHX_ "Module name required with -%c option",
3352 option);
3353 if (colon)
3354 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3355 "contains single ':'",
63da6837 3356 (int)(s - start), start, option);
b64cb68c 3357 end = s + strlen(s);
c07a80fd 3358 if (*s != '=') {
b64cb68c 3359 sv_catpvn(sv, start, end - start);
0544e6df 3360 if (option == 'm') {
c07a80fd 3361 if (*s != '\0')
cea2e8a9 3362 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3363 sv_catpvs( sv, " ()");
c07a80fd
PP
3364 }
3365 } else {
11343788 3366 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3367 /* Use NUL as q''-delimiter. */
3368 sv_catpvs(sv, " split(/,/,q\0");
3369 ++s;
3370 sv_catpvn(sv, s, end - s);
396482e1 3371 sv_catpvs(sv, "\0)");
c07a80fd 3372 }
b64cb68c 3373 s = end;
29a861e7 3374 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3375 }
3376 else
0544e6df 3377 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3378 return s;
79072805 3379 case 'n':
3280af22 3380 PL_minus_n = TRUE;
79072805
LW
3381 s++;
3382 return s;
3383 case 'p':
3280af22 3384 PL_minus_p = TRUE;
79072805
LW
3385 s++;
3386 return s;
3387 case 's':
f20b2998 3388 forbid_setid('s', FALSE);
3280af22 3389 PL_doswitches = TRUE;
79072805
LW
3390 s++;
3391 return s;
6537fe72 3392 case 't':
27a6968b 3393 case 'T':
dc6d7f5c 3394#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3395 /* silently ignore */
dc6d7f5c 3396#elif defined(NO_TAINT_SUPPORT)
3231f579 3397 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3398 "Cowardly refusing to run with -t or -T flags");
3399#else
3400 if (!TAINTING_get)
27a6968b 3401 TOO_LATE_FOR(*s);
284167a5 3402#endif
6537fe72 3403 s++;
463ee0b2 3404 return s;
79072805 3405 case 'u':
3280af22 3406 PL_do_undump = TRUE;
79072805
LW
3407 s++;
3408 return s;
3409 case 'U':
3280af22 3410 PL_unsafe = TRUE;
79072805
LW
3411 s++;
3412 return s;
3413 case 'v':
c4bc78d9
NC
3414 minus_v();
3415 case 'w':
3416 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3417 PL_dowarn |= G_WARN_ON;
3418 }
3419 s++;
3420 return s;
3421 case 'W':
3422 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3423 if (!specialWARN(PL_compiling.cop_warnings))
3424 PerlMemShared_free(PL_compiling.cop_warnings);
3425 PL_compiling.cop_warnings = pWARN_ALL ;
3426 s++;
3427 return s;
3428 case 'X':
3429 PL_dowarn = G_WARN_ALL_OFF;
3430 if (!specialWARN(PL_compiling.cop_warnings))
3431 PerlMemShared_free(PL_compiling.cop_warnings);
3432 PL_compiling.cop_warnings = pWARN_NONE ;
3433 s++;
3434 return s;
3435 case '*':
3436 case ' ':
3437 while( *s == ' ' )
3438 ++s;
3439 if (s[0] == '-') /* Additional switches on #! line. */
3440 return s+1;
3441 break;
3442 case '-':
3443 case 0:
3444#if defined(WIN32) || !defined(PERL_STRICT_CR)
3445 case '\r':
3446#endif
3447 case '\n':
3448 case '\t':
3449 break;
3450#ifdef ALTERNATE_SHEBANG
3451 case 'S': /* OS/2 needs -S on "extproc" line. */
3452 break;
3453#endif
4bb78d63
CB
3454 case 'e': case 'f': case 'x': case 'E':
3455#ifndef ALTERNATE_SHEBANG
3456 case 'S':
3457#endif
3458 case 'V':
c4bc78d9 3459 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3460 default:
3461 Perl_croak(aTHX_
3462 "Unrecognized switch: -%.1s (-h will show valid options)",s
3463 );
c4bc78d9
NC
3464 }
3465 return NULL;
3466}
3467
3468
3469STATIC void
3470S_minus_v(pTHX)
3471{
fc3381af 3472 PerlIO * PIO_stdout;
46807d8e 3473 {
709aee94
DD
3474 const char * const level_str = "v" PERL_VERSION_STRING;
3475 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3476#ifdef PERL_PATCHNUM
709aee94 3477 SV* level;
23d483e2 3478# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3479 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3480# else
709aee94 3481 static const char num [] = PERL_PATCHNUM;
23d483e2 3482# endif
fc3381af 3483 {
709aee94
DD
3484 const STRLEN num_len = sizeof(num)-1;