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4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
7a2bbcbf 6 * 2013, 2014, 2015, 2016 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);
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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
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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
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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 *
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150perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
151 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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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
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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;
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165 PL_MemShared = ipMS;
166 PL_MemParse = ipMP;
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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
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175 return my_perl;
176}
177#else
954c1994
GS
178
179/*
ccfc67b7
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180=head1 Embedding Functions
181
954c1994
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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;
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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
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231 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
232
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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);
6b659339 395 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
7b8dd5f4 396
8990e307 397 ENTER;
79072805
LW
398}
399
954c1994 400/*
62375a60
NIS
401=for apidoc nothreadhook
402
403Stub that provides thread hook for perl_destruct when there are
404no threads.
405
406=cut
407*/
408
409int
4e9e3734 410Perl_nothreadhook(pTHX)
62375a60 411{
96a5add6 412 PERL_UNUSED_CONTEXT;
62375a60
NIS
413 return 0;
414}
415
41e4abd8
NC
416#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
417void
418Perl_dump_sv_child(pTHX_ SV *sv)
419{
420 ssize_t got;
bf357333
NC
421 const int sock = PL_dumper_fd;
422 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
423 union control_un control;
424 struct msghdr msg;
808ad2d0 425 struct iovec vec[2];
bf357333 426 struct cmsghdr *cmptr;
808ad2d0
NC
427 int returned_errno;
428 unsigned char buffer[256];
41e4abd8 429
7918f24d
NC
430 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
431
bf357333 432 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
433 return;
434
435 PerlIO_flush(Perl_debug_log);
436
bf357333
NC
437 /* All these shenanigans are to pass a file descriptor over to our child for
438 it to dump out to. We can't let it hold open the file descriptor when it
439 forks, as the file descriptor it will dump to can turn out to be one end
440 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 441 be open, the wait would be forever.) */
bf357333
NC
442
443 msg.msg_control = control.control;
444 msg.msg_controllen = sizeof(control.control);
445 /* We're a connected socket so we don't need a destination */
446 msg.msg_name = NULL;
447 msg.msg_namelen = 0;
448 msg.msg_iov = vec;
808ad2d0 449 msg.msg_iovlen = 1;
bf357333
NC
450
451 cmptr = CMSG_FIRSTHDR(&msg);
452 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
453 cmptr->cmsg_level = SOL_SOCKET;
454 cmptr->cmsg_type = SCM_RIGHTS;
455 *((int *)CMSG_DATA(cmptr)) = 1;
456
457 vec[0].iov_base = (void*)&sv;
458 vec[0].iov_len = sizeof(sv);
459 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
460
461 if(got < 0) {
bf357333 462 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
463 abort();
464 }
bf357333
NC
465 if(got < sizeof(sv)) {
466 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
467 abort();
468 }
469
808ad2d0
NC
470 /* Return protocol is
471 int: errno value
472 unsigned char: length of location string (0 for empty)
473 unsigned char*: string (not terminated)
474 */
475 vec[0].iov_base = (void*)&returned_errno;
476 vec[0].iov_len = sizeof(returned_errno);
477 vec[1].iov_base = buffer;
478 vec[1].iov_len = 1;
479
480 got = readv(sock, vec, 2);
41e4abd8
NC
481
482 if(got < 0) {
483 perror("Debug leaking scalars parent read failed");
808ad2d0 484 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
485 abort();
486 }
808ad2d0 487 if(got < sizeof(returned_errno) + 1) {
41e4abd8 488 perror("Debug leaking scalars parent short read");
808ad2d0 489 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
490 abort();
491 }
492
808ad2d0
NC
493 if (*buffer) {
494 got = read(sock, buffer + 1, *buffer);
495 if(got < 0) {
496 perror("Debug leaking scalars parent read 2 failed");
497 PerlIO_flush(PerlIO_stderr());
498 abort();
499 }
500
501 if(got < *buffer) {
502 perror("Debug leaking scalars parent short read 2");
503 PerlIO_flush(PerlIO_stderr());
504 abort();
505 }
506 }
507
508 if (returned_errno || *buffer) {
509 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
510 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 511 returned_errno, Strerror(returned_errno));
41e4abd8
NC
512 }
513}
514#endif
515
62375a60 516/*
954c1994
GS
517=for apidoc perl_destruct
518
519Shuts down a Perl interpreter. See L<perlembed>.
520
521=cut
522*/
523
31d77e54 524int
0cb96387 525perl_destruct(pTHXx)
79072805 526{
27da23d5 527 dVAR;
be2ea8ed 528 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 529 HV *hv;
2aa47728 530#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
531 pid_t child;
532#endif
9c0b6888 533 int i;
8990e307 534
7918f24d
NC
535 PERL_ARGS_ASSERT_PERL_DESTRUCT;
536#ifndef MULTIPLICITY
ed6c66dd 537 PERL_UNUSED_ARG(my_perl);
7918f24d 538#endif
9d4ba2ae 539
3d22c4f0
GG
540 assert(PL_scopestack_ix == 1);
541
7766f137
GS
542 /* wait for all pseudo-forked children to finish */
543 PERL_WAIT_FOR_CHILDREN;
544
3280af22 545 destruct_level = PL_perl_destruct_level;
36e77d41 546#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 547 {
9d4ba2ae
AL
548 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
549 if (s) {
96e440d2
JH
550 int i;
551 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
552 i = -1;
553 } else {
22ff3130
HS
554 UV uv;
555 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
556 i = (int)uv;
557 else
558 i = 0;
96e440d2 559 }
36e77d41
DD
560#ifdef DEBUGGING
561 if (destruct_level < i) destruct_level = i;
562#endif
563#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
564 /* RT #114496, for perl_free */
565 PL_perl_destruct_level = i;
36e77d41 566#endif
5f05dabc 567 }
4633a7c4
LW
568 }
569#endif
570
27da23d5 571 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
572 dJMPENV;
573 int x = 0;
574
575 JMPENV_PUSH(x);
1b6737cc 576 PERL_UNUSED_VAR(x);
9ebf26ad 577 if (PL_endav && !PL_minus_c) {
ca7b837b 578 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 579 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 580 }
f3faeb53 581 JMPENV_POP;
26f423df 582 }
f3faeb53 583 LEAVE;
a0d0e21e 584 FREETMPS;
3d22c4f0 585 assert(PL_scopestack_ix == 0);
a0d0e21e 586
e00b64d4 587 /* Need to flush since END blocks can produce output */
8abddda3
TC
588 /* flush stdout separately, since we can identify it */
589#ifdef USE_PERLIO
590 {
591 PerlIO *stdo = PerlIO_stdout();
592 if (*stdo && PerlIO_flush(stdo)) {
593 PerlIO_restore_errno(stdo);
594 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
595 Strerror(errno));
596 if (!STATUS_UNIX)
597 STATUS_ALL_FAILURE;
598 }
599 }
600#endif
f13a2bc0 601 my_fflush_all();
e00b64d4 602
75d476e2
SM
603#ifdef PERL_TRACE_OPS
604 /* If we traced all Perl OP usage, report and clean up */
605 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
606 for (i = 0; i <= OP_max; ++i) {
607 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
608 PL_op_exec_cnt[i] = 0;
609 }
610 /* Utility slot for easily doing little tracing experiments in the runloop: */
611 if (PL_op_exec_cnt[OP_max+1] != 0)
612 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
613 PerlIO_printf(Perl_debug_log, "\n");
614#endif
615
616
16c91539 617 if (PL_threadhook(aTHX)) {
62375a60 618 /* Threads hook has vetoed further cleanup */
c301d606 619 PL_veto_cleanup = TRUE;
37038d91 620 return STATUS_EXIT;
62375a60
NIS
621 }
622
2aa47728
NC
623#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
624 if (destruct_level != 0) {
625 /* Fork here to create a child. Our child's job is to preserve the
626 state of scalars prior to destruction, so that we can instruct it
627 to dump any scalars that we later find have leaked.
628 There's no subtlety in this code - it assumes POSIX, and it doesn't
629 fail gracefully */
630 int fd[2];
631
632 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
633 perror("Debug leaking scalars socketpair failed");
634 abort();
635 }
636
637 child = fork();
638 if(child == -1) {
639 perror("Debug leaking scalars fork failed");
640 abort();
641 }
642 if (!child) {
643 /* We are the child */
3125a5a4
NC
644 const int sock = fd[1];
645 const int debug_fd = PerlIO_fileno(Perl_debug_log);
646 int f;
808ad2d0
NC
647 const char *where;
648 /* Our success message is an integer 0, and a char 0 */
b61433a9 649 static const char success[sizeof(int) + 1] = {0};
3125a5a4 650
2aa47728 651 close(fd[0]);
2aa47728 652
3125a5a4
NC
653 /* We need to close all other file descriptors otherwise we end up
654 with interesting hangs, where the parent closes its end of a
655 pipe, and sits waiting for (another) child to terminate. Only
656 that child never terminates, because it never gets EOF, because
bf357333
NC
657 we also have the far end of the pipe open. We even need to
658 close the debugging fd, because sometimes it happens to be one
659 end of a pipe, and a process is waiting on the other end for
660 EOF. Normally it would be closed at some point earlier in
661 destruction, but if we happen to cause the pipe to remain open,
662 EOF never occurs, and we get an infinite hang. Hence all the
663 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
664
665 f = sysconf(_SC_OPEN_MAX);
666 if(f < 0) {
808ad2d0
NC
667 where = "sysconf failed";
668 goto abort;
3125a5a4
NC
669 }
670 while (f--) {
671 if (f == sock)
672 continue;
3125a5a4
NC
673 close(f);
674 }
675
2aa47728
NC
676 while (1) {
677 SV *target;
bf357333
NC
678 union control_un control;
679 struct msghdr msg;
680 struct iovec vec[1];
681 struct cmsghdr *cmptr;
682 ssize_t got;
683 int got_fd;
684
685 msg.msg_control = control.control;
686 msg.msg_controllen = sizeof(control.control);
687 /* We're a connected socket so we don't need a source */
688 msg.msg_name = NULL;
689 msg.msg_namelen = 0;
690 msg.msg_iov = vec;
c3caa5c3 691 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
692
693 vec[0].iov_base = (void*)&target;
694 vec[0].iov_len = sizeof(target);
695
696 got = recvmsg(sock, &msg, 0);
2aa47728
NC
697
698 if(got == 0)
699 break;
700 if(got < 0) {
808ad2d0
NC
701 where = "recv failed";
702 goto abort;
2aa47728
NC
703 }
704 if(got < sizeof(target)) {
808ad2d0
NC
705 where = "short recv";
706 goto abort;
2aa47728 707 }
bf357333 708
808ad2d0
NC
709 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
710 where = "no cmsg";
711 goto abort;
712 }
713 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
714 where = "wrong cmsg_len";
715 goto abort;
716 }
717 if(cmptr->cmsg_level != SOL_SOCKET) {
718 where = "wrong cmsg_level";
719 goto abort;
720 }
721 if(cmptr->cmsg_type != SCM_RIGHTS) {
722 where = "wrong cmsg_type";
723 goto abort;
724 }
bf357333
NC
725
726 got_fd = *(int*)CMSG_DATA(cmptr);
727 /* For our last little bit of trickery, put the file descriptor
728 back into Perl_debug_log, as if we never actually closed it
729 */
808ad2d0
NC
730 if(got_fd != debug_fd) {
731 if (dup2(got_fd, debug_fd) == -1) {
732 where = "dup2";
733 goto abort;
734 }
735 }
2aa47728 736 sv_dump(target);
bf357333 737
2aa47728
NC
738 PerlIO_flush(Perl_debug_log);
739
808ad2d0 740 got = write(sock, &success, sizeof(success));
2aa47728
NC
741
742 if(got < 0) {
808ad2d0
NC
743 where = "write failed";
744 goto abort;
2aa47728 745 }
808ad2d0
NC
746 if(got < sizeof(success)) {
747 where = "short write";
748 goto abort;
2aa47728
NC
749 }
750 }
751 _exit(0);
808ad2d0
NC
752 abort:
753 {
754 int send_errno = errno;
755 unsigned char length = (unsigned char) strlen(where);
756 struct iovec failure[3] = {
757 {(void*)&send_errno, sizeof(send_errno)},
758 {&length, 1},
759 {(void*)where, length}
760 };
761 int got = writev(sock, failure, 3);
762 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
763 in the parent if we try to read from the socketpair after the
764 child has exited, even if there was data to read.
765 So sleep a bit to give the parent a fighting chance of
766 reading the data. */
767 sleep(2);
768 _exit((got == -1) ? errno : 0);
769 }
bf357333 770 /* End of child. */
2aa47728 771 }
41e4abd8 772 PL_dumper_fd = fd[0];
2aa47728
NC
773 close(fd[1]);
774 }
775#endif
776
ff0cee69
PP
777 /* We must account for everything. */
778
779 /* Destroy the main CV and syntax tree */
37e77c23
FC
780 /* Set PL_curcop now, because destroying ops can cause new SVs
781 to be generated in Perl_pad_swipe, and when running with
782 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
783 op from which the filename structure member is copied. */
17fbfdf6 784 PL_curcop = &PL_compiling;
3280af22 785 if (PL_main_root) {
4e380990
DM
786 /* ensure comppad/curpad to refer to main's pad */
787 if (CvPADLIST(PL_main_cv)) {
788 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 789 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 790 }
3280af22 791 op_free(PL_main_root);
5f66b61c 792 PL_main_root = NULL;
a0d0e21e 793 }
5f66b61c 794 PL_main_start = NULL;
aac9d523
DM
795 /* note that PL_main_cv isn't usually actually freed at this point,
796 * due to the CvOUTSIDE refs from subs compiled within it. It will
797 * get freed once all the subs are freed in sv_clean_all(), for
798 * destruct_level > 0 */
3280af22 799 SvREFCNT_dec(PL_main_cv);
601f1833 800 PL_main_cv = NULL;
ca7b837b 801 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 802
13621cfb
NIS
803 /* Tell PerlIO we are about to tear things apart in case
804 we have layers which are using resources that should
805 be cleaned up now.
806 */
807
808 PerlIO_destruct(aTHX);
809
ddf23d4a
SM
810 /*
811 * Try to destruct global references. We do this first so that the
812 * destructors and destructees still exist. Some sv's might remain.
813 * Non-referenced objects are on their own.
814 */
815 sv_clean_objs();
8990e307 816
5cd24f17 817 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 818 SvREFCNT_dec(PL_warnhook);
a0714e2c 819 PL_warnhook = NULL;
3280af22 820 SvREFCNT_dec(PL_diehook);
a0714e2c 821 PL_diehook = NULL;
5cd24f17 822
4b556e6c 823 /* call exit list functions */
3280af22 824 while (PL_exitlistlen-- > 0)
acfe0abc 825 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 826
3280af22 827 Safefree(PL_exitlist);
4b556e6c 828
1c4916e5
CB
829 PL_exitlist = NULL;
830 PL_exitlistlen = 0;
831
a3e6e81e
NC
832 SvREFCNT_dec(PL_registered_mros);
833
551a8b83 834 /* jettison our possibly duplicated environment */
4b647fb0
DM
835 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
836 * so we certainly shouldn't free it here
837 */
2f42fcb0 838#ifndef PERL_MICRO
4b647fb0 839#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 840 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
841#ifdef USE_ITHREADS
842 /* only main thread can free environ[0] contents */
843 && PL_curinterp == aTHX
844#endif
845 )
846 {
551a8b83
JH
847 I32 i;
848
849 for (i = 0; environ[i]; i++)
4b420006 850 safesysfree(environ[i]);
0631ea03 851
4b420006
JH
852 /* Must use safesysfree() when working with environ. */
853 safesysfree(environ);
551a8b83
JH
854
855 environ = PL_origenviron;
856 }
857#endif
2f42fcb0 858#endif /* !PERL_MICRO */
551a8b83 859
30985c42
JH
860 if (destruct_level == 0) {
861
862 DEBUG_P(debprofdump());
863
864#if defined(PERLIO_LAYERS)
865 /* No more IO - including error messages ! */
866 PerlIO_cleanup(aTHX);
867#endif
868
869 CopFILE_free(&PL_compiling);
30985c42
JH
870
871 /* The exit() function will do everything that needs doing. */
872 return STATUS_EXIT;
873 }
874
9fa9f06b
KW
875 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
876
5f8cb046
DM
877#ifdef USE_ITHREADS
878 /* the syntax tree is shared between clones
879 * so op_free(PL_main_root) only ReREFCNT_dec's
880 * REGEXPs in the parent interpreter
881 * we need to manually ReREFCNT_dec for the clones
882 */
0547a729
DM
883 {
884 I32 i = AvFILLp(PL_regex_padav);
885 SV **ary = AvARRAY(PL_regex_padav);
886
887 for (; i; i--) {
888 SvREFCNT_dec(ary[i]);
889 ary[i] = &PL_sv_undef;
890 }
891 }
5f8cb046
DM
892#endif
893
0547a729 894
ad64d0ec 895 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
896 PL_stashcache = NULL;
897
5f05dabc
PP
898 /* loosen bonds of global variables */
899
2f9285f8
DM
900 /* XXX can PL_parser still be non-null here? */
901 if(PL_parser && PL_parser->rsfp) {
902 (void)PerlIO_close(PL_parser->rsfp);
903 PL_parser->rsfp = NULL;
8ebc5c01
PP
904 }
905
84386e14
RGS
906 if (PL_minus_F) {
907 Safefree(PL_splitstr);
908 PL_splitstr = NULL;
909 }
910
8ebc5c01 911 /* switches */
3280af22
NIS
912 PL_minus_n = FALSE;
913 PL_minus_p = FALSE;
914 PL_minus_l = FALSE;
915 PL_minus_a = FALSE;
916 PL_minus_F = FALSE;
917 PL_doswitches = FALSE;
599cee73 918 PL_dowarn = G_WARN_OFF;
1a904fc8 919#ifdef PERL_SAWAMPERSAND
d3b97530 920 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 921#endif
3280af22
NIS
922 PL_unsafe = FALSE;
923
924 Safefree(PL_inplace);
bd61b366 925 PL_inplace = NULL;
a7cb1f99 926 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
927
928 if (PL_e_script) {
929 SvREFCNT_dec(PL_e_script);
a0714e2c 930 PL_e_script = NULL;
8ebc5c01
PP
931 }
932
bf9cdc68
RG
933 PL_perldb = 0;
934
8ebc5c01
PP
935 /* magical thingies */
936
e23d9e2f
CS
937 SvREFCNT_dec(PL_ofsgv); /* *, */
938 PL_ofsgv = NULL;
5f05dabc 939
7889fe52 940 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 941 PL_ors_sv = NULL;
8ebc5c01 942
3280af22 943 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 944 PL_rs = NULL;
dc92893f 945
d33b2eba 946 Safefree(PL_osname); /* $^O */
bd61b366 947 PL_osname = NULL;
5f05dabc 948
3280af22 949 SvREFCNT_dec(PL_statname);
a0714e2c
SS
950 PL_statname = NULL;
951 PL_statgv = NULL;
5f05dabc 952
8ebc5c01
PP
953 /* defgv, aka *_ should be taken care of elsewhere */
954
7d5ea4e7
GS
955 /* float buffer */
956 Safefree(PL_efloatbuf);
bd61b366 957 PL_efloatbuf = NULL;
7d5ea4e7
GS
958 PL_efloatsize = 0;
959
8ebc5c01 960 /* startup and shutdown function lists */
3280af22 961 SvREFCNT_dec(PL_beginav);
5a837c8f 962 SvREFCNT_dec(PL_beginav_save);
3280af22 963 SvREFCNT_dec(PL_endav);
7d30b5c4 964 SvREFCNT_dec(PL_checkav);
ece599bd 965 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
966 SvREFCNT_dec(PL_unitcheckav);
967 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 968 SvREFCNT_dec(PL_initav);
7d49f689
NC
969 PL_beginav = NULL;
970 PL_beginav_save = NULL;
971 PL_endav = NULL;
972 PL_checkav = NULL;
973 PL_checkav_save = NULL;
3c10abe3
AG
974 PL_unitcheckav = NULL;
975 PL_unitcheckav_save = NULL;
7d49f689 976 PL_initav = NULL;
5618dfe8 977
8ebc5c01 978 /* shortcuts just get cleared */
a0714e2c
SS
979 PL_hintgv = NULL;
980 PL_errgv = NULL;
a0714e2c
SS
981 PL_argvoutgv = NULL;
982 PL_stdingv = NULL;
983 PL_stderrgv = NULL;
984 PL_last_in_gv = NULL;
a0714e2c
SS
985 PL_DBsingle = NULL;
986 PL_DBtrace = NULL;
987 PL_DBsignal = NULL;
a6d69523
TC
988 PL_DBsingle_iv = 0;
989 PL_DBtrace_iv = 0;
990 PL_DBsignal_iv = 0;
601f1833 991 PL_DBcv = NULL;
7d49f689 992 PL_dbargs = NULL;
5c284bb0 993 PL_debstash = NULL;
8ebc5c01 994
cf93a474 995 SvREFCNT_dec(PL_envgv);
f03015cd 996 SvREFCNT_dec(PL_incgv);
722fa0e9 997 SvREFCNT_dec(PL_argvgv);
475b1e90 998 SvREFCNT_dec(PL_replgv);
8cece913
FC
999 SvREFCNT_dec(PL_DBgv);
1000 SvREFCNT_dec(PL_DBline);
1001 SvREFCNT_dec(PL_DBsub);
cf93a474 1002 PL_envgv = NULL;
f03015cd 1003 PL_incgv = NULL;
722fa0e9 1004 PL_argvgv = NULL;
475b1e90 1005 PL_replgv = NULL;
8cece913
FC
1006 PL_DBgv = NULL;
1007 PL_DBline = NULL;
1008 PL_DBsub = NULL;
1009
7a1c5554 1010 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1011 PL_argvout_stack = NULL;
8ebc5c01 1012
5c831c24 1013 SvREFCNT_dec(PL_modglobal);
5c284bb0 1014 PL_modglobal = NULL;
5c831c24 1015 SvREFCNT_dec(PL_preambleav);
7d49f689 1016 PL_preambleav = NULL;
5c831c24 1017 SvREFCNT_dec(PL_subname);
a0714e2c 1018 PL_subname = NULL;
ca0c25f6 1019#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1020 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1021 PL_pidstatus = NULL;
ca0c25f6 1022#endif
5c831c24 1023 SvREFCNT_dec(PL_toptarget);
a0714e2c 1024 PL_toptarget = NULL;
5c831c24 1025 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1026 PL_bodytarget = NULL;
1027 PL_formtarget = NULL;
5c831c24 1028
d33b2eba 1029 /* free locale stuff */
b9582b6a 1030#ifdef USE_LOCALE_COLLATE
d33b2eba 1031 Safefree(PL_collation_name);
bd61b366 1032 PL_collation_name = NULL;
b9582b6a 1033#endif
d33b2eba 1034
b9582b6a 1035#ifdef USE_LOCALE_NUMERIC
d33b2eba 1036 Safefree(PL_numeric_name);
bd61b366 1037 PL_numeric_name = NULL;
a453c169 1038 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1039 PL_numeric_radix_sv = NULL;
b9582b6a 1040#endif
d33b2eba 1041
9c0b6888
KW
1042 /* clear character classes */
1043 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1044 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1045 PL_utf8_swash_ptrs[i] = NULL;
1046 }
5c831c24
GS
1047 SvREFCNT_dec(PL_utf8_mark);
1048 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1049 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1050 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1051 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1052 SvREFCNT_dec(PL_utf8_idstart);
1053 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1054 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1055 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1056 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1057 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1058 SvREFCNT_dec(PL_UpperLatin1);
1059 SvREFCNT_dec(PL_Latin1);
1060 SvREFCNT_dec(PL_NonL1NonFinalFold);
1061 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1062#ifdef USE_LOCALE_CTYPE
780fcc9f 1063 SvREFCNT_dec(PL_warn_locale);
5b7de470 1064#endif
a0714e2c
SS
1065 PL_utf8_mark = NULL;
1066 PL_utf8_toupper = NULL;
1067 PL_utf8_totitle = NULL;
1068 PL_utf8_tolower = NULL;
1069 PL_utf8_tofold = NULL;
1070 PL_utf8_idstart = NULL;
1071 PL_utf8_idcont = NULL;
2726813d 1072 PL_utf8_foldclosures = NULL;
9fa9f06b 1073 PL_AboveLatin1 = NULL;
e0a1ff7a 1074 PL_InBitmap = NULL;
9fa9f06b 1075 PL_HasMultiCharFold = NULL;
5b7de470 1076#ifdef USE_LOCALE_CTYPE
780fcc9f 1077 PL_warn_locale = NULL;
5b7de470 1078#endif
9fa9f06b
KW
1079 PL_Latin1 = NULL;
1080 PL_NonL1NonFinalFold = NULL;
1081 PL_UpperLatin1 = NULL;
86f72d56 1082 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1083 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1084 PL_XPosix_ptrs[i] = NULL;
86f72d56 1085 }
64935bc6 1086 PL_GCB_invlist = NULL;
6b659339 1087 PL_LB_invlist = NULL;
06ae2722 1088 PL_SB_invlist = NULL;
ae3bb8ea 1089 PL_WB_invlist = NULL;
5c831c24 1090
971a9dd3 1091 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1092 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1093 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1094 cophh_free(CopHINTHASH_get(&PL_compiling));
1095 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1096 CopFILE_free(&PL_compiling);
5c831c24 1097
a0d0e21e 1098 /* Prepare to destruct main symbol table. */
5f05dabc 1099
3280af22 1100 hv = PL_defstash;
ca556bcd
DM
1101 /* break ref loop *:: <=> %:: */
1102 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1103 PL_defstash = 0;
a0d0e21e 1104 SvREFCNT_dec(hv);
5c831c24 1105 SvREFCNT_dec(PL_curstname);
a0714e2c 1106 PL_curstname = NULL;
a0d0e21e 1107
5a844595
GS
1108 /* clear queued errors */
1109 SvREFCNT_dec(PL_errors);
a0714e2c 1110 PL_errors = NULL;
5a844595 1111
dd69841b
BB
1112 SvREFCNT_dec(PL_isarev);
1113
a0d0e21e 1114 FREETMPS;
9b387841 1115 if (destruct_level >= 2) {
3280af22 1116 if (PL_scopestack_ix != 0)
9b387841
NC
1117 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1118 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1119 (long)PL_scopestack_ix);
3280af22 1120 if (PL_savestack_ix != 0)
9b387841
NC
1121 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1122 "Unbalanced saves: %ld more saves than restores\n",
1123 (long)PL_savestack_ix);
3280af22 1124 if (PL_tmps_floor != -1)
9b387841
NC
1125 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1126 (long)PL_tmps_floor + 1);
a0d0e21e 1127 if (cxstack_ix != -1)
9b387841
NC
1128 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1129 (long)cxstack_ix + 1);
a0d0e21e 1130 }
8990e307 1131
0547a729
DM
1132#ifdef USE_ITHREADS
1133 SvREFCNT_dec(PL_regex_padav);
1134 PL_regex_padav = NULL;
1135 PL_regex_pad = NULL;
1136#endif
1137
776df701 1138#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1139 /* the entries in this list are allocated via SV PVX's, so get freed
1140 * in sv_clean_all */
1141 Safefree(PL_my_cxt_list);
776df701 1142#endif
57bb2458 1143
8990e307 1144 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1145
1146 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1147 while (sv_clean_all() > 2)
5226ed68
JH
1148 ;
1149
23083432
FC
1150#ifdef USE_ITHREADS
1151 Safefree(PL_stashpad); /* must come after sv_clean_all */
1152#endif
1153
d4777f27
GS
1154 AvREAL_off(PL_fdpid); /* no surviving entries */
1155 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1156 PL_fdpid = NULL;
d33b2eba 1157
6c644e78
GS
1158#ifdef HAVE_INTERP_INTERN
1159 sys_intern_clear();
1160#endif
1161
a38ab475
RZ
1162 /* constant strings */
1163 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1164 SvREFCNT_dec(PL_sv_consts[i]);
1165 PL_sv_consts[i] = NULL;
1166 }
1167
6e72f9df
PP
1168 /* Destruct the global string table. */
1169 {
1170 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1171 * so that sv_free() won't fail on them.
80459961
NC
1172 * Now that the global string table is using a single hunk of memory
1173 * for both HE and HEK, we either need to explicitly unshare it the
1174 * correct way, or actually free things here.
6e72f9df 1175 */
80459961
NC
1176 I32 riter = 0;
1177 const I32 max = HvMAX(PL_strtab);
c4420975 1178 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1179 HE *hent = array[0];
1180
6e72f9df 1181 for (;;) {
0453d815 1182 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1183 HE * const next = HeNEXT(hent);
9014280d 1184 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1185 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1186 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1187 Safefree(hent);
1188 hent = next;
6e72f9df
PP
1189 }
1190 if (!hent) {
1191 if (++riter > max)
1192 break;
1193 hent = array[riter];
1194 }
1195 }
80459961
NC
1196
1197 Safefree(array);
1198 HvARRAY(PL_strtab) = 0;
1199 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1200 }
3280af22 1201 SvREFCNT_dec(PL_strtab);
6e72f9df 1202
e652bb2f 1203#ifdef USE_ITHREADS
c21d1a0f 1204 /* free the pointer tables used for cloning */
a0739874 1205 ptr_table_free(PL_ptr_table);
bf9cdc68 1206 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1207#endif
a0739874 1208
d33b2eba
GS
1209 /* free special SVs */
1210
1211 SvREFCNT(&PL_sv_yes) = 0;
1212 sv_clear(&PL_sv_yes);
1213 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1214 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1215
1216 SvREFCNT(&PL_sv_no) = 0;
1217 sv_clear(&PL_sv_no);
1218 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1219 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1220
9f375a43
DM
1221 {
1222 int i;
1223 for (i=0; i<=2; i++) {
1224 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1225 sv_clear(PERL_DEBUG_PAD(i));
1226 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1227 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1228 }
1229 }
1230
0453d815 1231 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1232 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1233
eba0f806
DM
1234#ifdef DEBUG_LEAKING_SCALARS
1235 if (PL_sv_count != 0) {
1236 SV* sva;
1237 SV* sv;
eb578fdb 1238 SV* svend;
eba0f806 1239
ad64d0ec 1240 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1241 svend = &sva[SvREFCNT(sva)];
1242 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1243 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1244 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1245 " flags=0x%"UVxf
fd0854ff 1246 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1247 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1248 "serial %"UVuf"\n",
574b8821
NC
1249 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1250 pTHX__VALUE,
fd0854ff
DM
1251 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1252 sv->sv_debug_line,
1253 sv->sv_debug_inpad ? "for" : "by",
1254 sv->sv_debug_optype ?
1255 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1256 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1257 sv->sv_debug_serial
fd0854ff 1258 );
2aa47728 1259#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1260 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1261#endif
eba0f806
DM
1262 }
1263 }
1264 }
1265 }
2aa47728
NC
1266#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1267 {
1268 int status;
1269 fd_set rset;
1270 /* Wait for up to 4 seconds for child to terminate.
1271 This seems to be the least effort way of timing out on reaping
1272 its exit status. */
1273 struct timeval waitfor = {4, 0};
41e4abd8 1274 int sock = PL_dumper_fd;
2aa47728
NC
1275
1276 shutdown(sock, 1);
1277 FD_ZERO(&rset);
1278 FD_SET(sock, &rset);
1279 select(sock + 1, &rset, NULL, NULL, &waitfor);
1280 waitpid(child, &status, WNOHANG);
1281 close(sock);
1282 }
1283#endif
eba0f806 1284#endif
77abb4c6
NC
1285#ifdef DEBUG_LEAKING_SCALARS_ABORT
1286 if (PL_sv_count)
1287 abort();
1288#endif
bf9cdc68 1289 PL_sv_count = 0;
eba0f806 1290
56a2bab7 1291#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1292 /* No more IO - including error messages ! */
1293 PerlIO_cleanup(aTHX);
1294#endif
1295
9f4bd222 1296 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1297 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1298 for no arg - and will try and SvREFCNT_dec it.
1299 */
1300 SvREFCNT(&PL_sv_undef) = 0;
1301 SvREADONLY_off(&PL_sv_undef);
1302
3280af22 1303 Safefree(PL_origfilename);
bd61b366 1304 PL_origfilename = NULL;
43c5f42d 1305 Safefree(PL_reg_curpm);
dd28f7bb 1306 free_tied_hv_pool();
3280af22 1307 Safefree(PL_op_mask);
cf36064f 1308 Safefree(PL_psig_name);
bf9cdc68 1309 PL_psig_name = (SV**)NULL;
d525a7b2 1310 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1311 {
1312 /* We need to NULL PL_psig_pend first, so that
1313 signal handlers know not to use it */
1314 int *psig_save = PL_psig_pend;
1315 PL_psig_pend = (int*)NULL;
1316 Safefree(psig_save);
1317 }
6e72f9df 1318 nuke_stacks();
284167a5
SM
1319 TAINTING_set(FALSE);
1320 TAINT_WARN_set(FALSE);
3280af22 1321 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1322
a0d0e21e 1323 DEBUG_P(debprofdump());
d33b2eba 1324
b173165c
FC
1325 PL_debug = 0;
1326
e5dd39fc 1327#ifdef USE_REENTRANT_API
10bc17b6 1328 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1329#endif
1330
a24da70b
NC
1331 /* These all point to HVs that are about to be blown away.
1332 Code in core and on CPAN assumes that if the interpreter is re-started
1333 that they will be cleanly NULL or pointing to a valid HV. */
1334 PL_custom_op_names = NULL;
1335 PL_custom_op_descs = NULL;
1336 PL_custom_ops = NULL;
1337
612f20c3
GS
1338 sv_free_arenas();
1339
5d9a96ca
DM
1340 while (PL_regmatch_slab) {
1341 regmatch_slab *s = PL_regmatch_slab;
1342 PL_regmatch_slab = PL_regmatch_slab->next;
1343 Safefree(s);
1344 }
1345
fc36a67e
PP
1346 /* As the absolutely last thing, free the non-arena SV for mess() */
1347
3280af22 1348 if (PL_mess_sv) {
f350b448
NC
1349 /* we know that type == SVt_PVMG */
1350
9c63abab 1351 /* it could have accumulated taint magic */
f350b448
NC
1352 MAGIC* mg;
1353 MAGIC* moremagic;
1354 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1355 moremagic = mg->mg_moremagic;
1356 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1357 && mg->mg_len >= 0)
1358 Safefree(mg->mg_ptr);
1359 Safefree(mg);
9c63abab 1360 }
f350b448 1361
fc36a67e 1362 /* we know that type >= SVt_PV */
8bd4d4c5 1363 SvPV_free(PL_mess_sv);
3280af22
NIS
1364 Safefree(SvANY(PL_mess_sv));
1365 Safefree(PL_mess_sv);
a0714e2c 1366 PL_mess_sv = NULL;
fc36a67e 1367 }
37038d91 1368 return STATUS_EXIT;
79072805
LW
1369}
1370
954c1994
GS
1371/*
1372=for apidoc perl_free
1373
1374Releases a Perl interpreter. See L<perlembed>.
1375
1376=cut
1377*/
1378
79072805 1379void
0cb96387 1380perl_free(pTHXx)
79072805 1381{
5174512c
NC
1382 dVAR;
1383
7918f24d
NC
1384 PERL_ARGS_ASSERT_PERL_FREE;
1385
c301d606
DM
1386 if (PL_veto_cleanup)
1387 return;
1388
7cb608b5 1389#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1390 {
1391 /*
1392 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1393 * value as we're probably hunting memory leaks then
1394 */
36e77d41 1395 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1396 const U32 old_debug = PL_debug;
55ef9aae
MHM
1397 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1398 thread at thread exit. */
4fd0a9b8
NC
1399 if (DEBUG_m_TEST) {
1400 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1401 "free this thread's memory\n");
1402 PL_debug &= ~ DEBUG_m_FLAG;
1403 }
6edcbed6
DD
1404 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1405 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1406 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1407 safesysfree(ptr);
1408 }
4fd0a9b8 1409 PL_debug = old_debug;
55ef9aae
MHM
1410 }
1411 }
7cb608b5
NC
1412#endif
1413
acfe0abc 1414#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1415# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1416 {
acfe0abc 1417# ifdef NETWARE
7af12a34 1418 void *host = nw_internal_host;
7af12a34 1419 PerlMem_free(aTHXx);
7af12a34 1420 nw_delete_internal_host(host);
acfe0abc 1421# else
bdb50480
NC
1422 void *host = w32_internal_host;
1423 PerlMem_free(aTHXx);
7af12a34 1424 win32_delete_internal_host(host);
acfe0abc 1425# endif
7af12a34 1426 }
1c0ca838
GS
1427# else
1428 PerlMem_free(aTHXx);
1429# endif
acfe0abc
GS
1430#else
1431 PerlMem_free(aTHXx);
76e3520e 1432#endif
79072805
LW
1433}
1434
b7f7fff6 1435#if defined(USE_ITHREADS)
aebd1ac7
GA
1436/* provide destructors to clean up the thread key when libperl is unloaded */
1437#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1438
826955bd 1439#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1440#pragma fini "perl_fini"
666ad1ec
GA
1441#elif defined(__sun) && !defined(__GNUC__)
1442#pragma fini (perl_fini)
aebd1ac7
GA
1443#endif
1444
0dbb1585
AL
1445static void
1446#if defined(__GNUC__)
1447__attribute__((destructor))
aebd1ac7 1448#endif
de009b76 1449perl_fini(void)
aebd1ac7 1450{
27da23d5 1451 dVAR;
5c64bffd
NC
1452 if (
1453#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1454 my_vars &&
1455#endif
1456 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1457 FREE_THREAD_KEY;
1458}
1459
1460#endif /* WIN32 */
1461#endif /* THREADS */
1462
4b556e6c 1463void
864dbfa3 1464Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1465{
3280af22
NIS
1466 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1467 PL_exitlist[PL_exitlistlen].fn = fn;
1468 PL_exitlist[PL_exitlistlen].ptr = ptr;
1469 ++PL_exitlistlen;
4b556e6c
JD
1470}
1471
954c1994
GS
1472/*
1473=for apidoc perl_parse
1474
1475Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1476
1477=cut
1478*/
1479
03d9f026
FC
1480#define SET_CURSTASH(newstash) \
1481 if (PL_curstash != newstash) { \
1482 SvREFCNT_dec(PL_curstash); \
1483 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1484 }
1485
79072805 1486int
0cb96387 1487perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1488{
27da23d5 1489 dVAR;
6224f72b 1490 I32 oldscope;
6224f72b 1491 int ret;
db36c5a1 1492 dJMPENV;
8d063cd8 1493
7918f24d
NC
1494 PERL_ARGS_ASSERT_PERL_PARSE;
1495#ifndef MULTIPLICITY
ed6c66dd 1496 PERL_UNUSED_ARG(my_perl);
7918f24d 1497#endif
7dc86639 1498#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1499 {
7dc86639
YO
1500 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1501
22ff3130 1502 if (s && strEQ(s, "1")) {
25c1b134
TC
1503 const unsigned char *seed= PERL_HASH_SEED;
1504 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1505 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1506 while (seed < seed_end) {
1507 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1508 }
6a5b4183
YO
1509#ifdef PERL_HASH_RANDOMIZE_KEYS
1510 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1511 PL_HASH_RAND_BITS_ENABLED,
1512 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1513#endif
7dc86639
YO
1514 PerlIO_printf(Perl_debug_log, "\n");
1515 }
b0891165
JH
1516 }
1517#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
43238333 1518
ea34f6bd 1519#ifdef __amigaos4__
43238333
AB
1520 {
1521 struct NameTranslationInfo nti;
1522 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1523 }
1524#endif
1525
3280af22 1526 PL_origargc = argc;
e2975953 1527 PL_origargv = argv;
a0d0e21e 1528
a2722ac9
GA
1529 if (PL_origalen != 0) {
1530 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1531 }
1532 else {
3cb9023d
JH
1533 /* Set PL_origalen be the sum of the contiguous argv[]
1534 * elements plus the size of the env in case that it is
e9137a8e 1535 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1536 * as the maximum modifiable length of $0. In the worst case
1537 * the area we are able to modify is limited to the size of
43c32782 1538 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1539 * --jhi */
e1ec3a88 1540 const char *s = NULL;
54bfe034 1541 int i;
b7249aaf 1542 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1543 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1544 const UV aligned =
43c32782
JH
1545 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1546
1547 /* See if all the arguments are contiguous in memory. Note
1548 * that 'contiguous' is a loose term because some platforms
1549 * align the argv[] and the envp[]. If the arguments look
1550 * like non-aligned, assume that they are 'strictly' or
1551 * 'traditionally' contiguous. If the arguments look like
1552 * aligned, we just check that they are within aligned
1553 * PTRSIZE bytes. As long as no system has something bizarre
1554 * like the argv[] interleaved with some other data, we are
1555 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1556 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1557 while (*s) s++;
1558 for (i = 1; i < PL_origargc; i++) {
1559 if ((PL_origargv[i] == s + 1
43c32782 1560#ifdef OS2
c8941eeb 1561 || PL_origargv[i] == s + 2
43c32782 1562#endif
c8941eeb
JH
1563 )
1564 ||
1565 (aligned &&
1566 (PL_origargv[i] > s &&
1567 PL_origargv[i] <=
1568 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1569 )
1570 {
1571 s = PL_origargv[i];
1572 while (*s) s++;
1573 }
1574 else
1575 break;
54bfe034 1576 }
54bfe034 1577 }
a4a109c2
JD
1578
1579#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1580 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1581 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1582 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1583 ||
1584 (aligned &&
1585 (PL_origenviron[0] > s &&
1586 PL_origenviron[0] <=
1587 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1588 )
1589 {
9d419b5f 1590#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1591 s = PL_origenviron[0];
1592 while (*s) s++;
1593#endif
bd61b366 1594 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1595 /* Force copy of environment. */
1596 for (i = 1; PL_origenviron[i]; i++) {
1597 if (PL_origenviron[i] == s + 1
1598 ||
1599 (aligned &&
1600 (PL_origenviron[i] > s &&
1601 PL_origenviron[i] <=
1602 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1603 )
1604 {
1605 s = PL_origenviron[i];
1606 while (*s) s++;
1607 }
1608 else
1609 break;
54bfe034 1610 }
43c32782 1611 }
54bfe034 1612 }
a4a109c2
JD
1613#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1614
2d2af554 1615 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1616 }
1617
3280af22 1618 if (PL_do_undump) {
a0d0e21e
LW
1619
1620 /* Come here if running an undumped a.out. */
1621
3280af22
NIS
1622 PL_origfilename = savepv(argv[0]);
1623 PL_do_undump = FALSE;
a0d0e21e 1624 cxstack_ix = -1; /* start label stack again */
748a9306 1625 init_ids();
284167a5 1626 assert (!TAINT_get);
b7975bdd 1627 TAINT;
e2051532 1628 set_caret_X();
b7975bdd 1629 TAINT_NOT;
a0d0e21e
LW
1630 init_postdump_symbols(argc,argv,env);
1631 return 0;
1632 }
1633
3280af22 1634 if (PL_main_root) {
3280af22 1635 op_free(PL_main_root);
5f66b61c 1636 PL_main_root = NULL;
ff0cee69 1637 }
5f66b61c 1638 PL_main_start = NULL;
3280af22 1639 SvREFCNT_dec(PL_main_cv);
601f1833 1640 PL_main_cv = NULL;
79072805 1641
3280af22
NIS
1642 time(&PL_basetime);
1643 oldscope = PL_scopestack_ix;
599cee73 1644 PL_dowarn = G_WARN_OFF;
f86702cc 1645
14dd3ad8 1646 JMPENV_PUSH(ret);
6224f72b 1647 switch (ret) {
312caa8e 1648 case 0:
14dd3ad8 1649 parse_body(env,xsinit);
9ebf26ad 1650 if (PL_unitcheckav) {
3c10abe3 1651 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1652 }
1653 if (PL_checkav) {
ca7b837b 1654 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1655 call_list(oldscope, PL_checkav);
9ebf26ad 1656 }
14dd3ad8
GS
1657 ret = 0;
1658 break;
6224f72b
GS
1659 case 1:
1660 STATUS_ALL_FAILURE;
924ba076 1661 /* FALLTHROUGH */
6224f72b
GS
1662 case 2:
1663 /* my_exit() was called */
3280af22 1664 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1665 LEAVE;
1666 FREETMPS;
03d9f026 1667 SET_CURSTASH(PL_defstash);
9ebf26ad 1668 if (PL_unitcheckav) {
3c10abe3 1669 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1670 }
1671 if (PL_checkav) {
ca7b837b 1672 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1673 call_list(oldscope, PL_checkav);
9ebf26ad 1674 }
37038d91 1675 ret = STATUS_EXIT;
14dd3ad8 1676 break;
6224f72b 1677 case 3:
bf49b057 1678 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1679 ret = 1;
1680 break;
6224f72b 1681 }
14dd3ad8
GS
1682 JMPENV_POP;
1683 return ret;
1684}
1685
4a5df386
NC
1686/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1687 miniperl, and we need to see those flags reflected in the values here. */
1688
1689/* What this returns is subject to change. Use the public interface in Config.
1690 */
1691static void
1692S_Internals_V(pTHX_ CV *cv)
1693{
1694 dXSARGS;
1695#ifdef LOCAL_PATCH_COUNT
1696 const int local_patch_count = LOCAL_PATCH_COUNT;
1697#else
1698 const int local_patch_count = 0;
1699#endif
2dc296d2 1700 const int entries = 3 + local_patch_count;
4a5df386 1701 int i;
fe1c5936 1702 static const char non_bincompat_options[] =
4a5df386
NC
1703# ifdef DEBUGGING
1704 " DEBUGGING"
1705# endif
1706# ifdef NO_MATHOMS
0d311fbe 1707 " NO_MATHOMS"
4a5df386 1708# endif
59b86f4b
DM
1709# ifdef NO_HASH_SEED
1710 " NO_HASH_SEED"
1711# endif
3b0e4ee2
MB
1712# ifdef NO_TAINT_SUPPORT
1713 " NO_TAINT_SUPPORT"
1714# endif
cb26ef7a
MB
1715# ifdef PERL_BOOL_AS_CHAR
1716 " PERL_BOOL_AS_CHAR"
1717# endif
93c10d60
FC
1718# ifdef PERL_COPY_ON_WRITE
1719 " PERL_COPY_ON_WRITE"
1720# endif
4a5df386
NC
1721# ifdef PERL_DISABLE_PMC
1722 " PERL_DISABLE_PMC"
1723# endif
1724# ifdef PERL_DONT_CREATE_GVSV
1725 " PERL_DONT_CREATE_GVSV"
1726# endif
9a044a43
NC
1727# ifdef PERL_EXTERNAL_GLOB
1728 " PERL_EXTERNAL_GLOB"
1729# endif
59b86f4b
DM
1730# ifdef PERL_HASH_FUNC_SIPHASH
1731 " PERL_HASH_FUNC_SIPHASH"
1732# endif
1733# ifdef PERL_HASH_FUNC_SDBM
1734 " PERL_HASH_FUNC_SDBM"
1735# endif
1736# ifdef PERL_HASH_FUNC_DJB2
1737 " PERL_HASH_FUNC_DJB2"
1738# endif
1739# ifdef PERL_HASH_FUNC_SUPERFAST
1740 " PERL_HASH_FUNC_SUPERFAST"
1741# endif
1742# ifdef PERL_HASH_FUNC_MURMUR3
1743 " PERL_HASH_FUNC_MURMUR3"
1744# endif
1745# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1746 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1747# endif
1748# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1749 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1750# endif
1751# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1752 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1753# endif
4a5df386
NC
1754# ifdef PERL_IS_MINIPERL
1755 " PERL_IS_MINIPERL"
1756# endif
1757# ifdef PERL_MALLOC_WRAP
1758 " PERL_MALLOC_WRAP"
1759# endif
1760# ifdef PERL_MEM_LOG
1761 " PERL_MEM_LOG"
1762# endif
1763# ifdef PERL_MEM_LOG_NOIMPL
1764 " PERL_MEM_LOG_NOIMPL"
1765# endif
59b86f4b
DM
1766# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1767 " PERL_PERTURB_KEYS_DETERMINISTIC"
1768# endif
1769# ifdef PERL_PERTURB_KEYS_DISABLED
1770 " PERL_PERTURB_KEYS_DISABLED"
1771# endif
1772# ifdef PERL_PERTURB_KEYS_RANDOM
1773 " PERL_PERTURB_KEYS_RANDOM"
1774# endif
c3cf41ec
NC
1775# ifdef PERL_PRESERVE_IVUV
1776 " PERL_PRESERVE_IVUV"
1777# endif
c051e30b
NC
1778# ifdef PERL_RELOCATABLE_INCPUSH
1779 " PERL_RELOCATABLE_INCPUSH"
1780# endif
4a5df386
NC
1781# ifdef PERL_USE_DEVEL
1782 " PERL_USE_DEVEL"
1783# endif
1784# ifdef PERL_USE_SAFE_PUTENV
1785 " PERL_USE_SAFE_PUTENV"
1786# endif
102b7877
YO
1787# ifdef SILENT_NO_TAINT_SUPPORT
1788 " SILENT_NO_TAINT_SUPPORT"
1789# endif
a3749cf3
NC
1790# ifdef UNLINK_ALL_VERSIONS
1791 " UNLINK_ALL_VERSIONS"
1792# endif
de618ee4
NC
1793# ifdef USE_ATTRIBUTES_FOR_PERLIO
1794 " USE_ATTRIBUTES_FOR_PERLIO"
1795# endif
4a5df386
NC
1796# ifdef USE_FAST_STDIO
1797 " USE_FAST_STDIO"
1798# endif
59b86f4b
DM
1799# ifdef USE_HASH_SEED_EXPLICIT
1800 " USE_HASH_SEED_EXPLICIT"
1801# endif
98548bdf
NC
1802# ifdef USE_LOCALE
1803 " USE_LOCALE"
1804# endif
98548bdf
NC
1805# ifdef USE_LOCALE_CTYPE
1806 " USE_LOCALE_CTYPE"
1807# endif
6937817d
DD
1808# ifdef WIN32_NO_REGISTRY
1809 " USE_NO_REGISTRY"
1810# endif
5a8d8935
NC
1811# ifdef USE_PERL_ATOF
1812 " USE_PERL_ATOF"
1813# endif
0d311fbe
NC
1814# ifdef USE_SITECUSTOMIZE
1815 " USE_SITECUSTOMIZE"
1816# endif
4a5df386
NC
1817 ;
1818 PERL_UNUSED_ARG(cv);
d3db1514 1819 PERL_UNUSED_VAR(items);
4a5df386
NC
1820
1821 EXTEND(SP, entries);
1822
1823 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1824 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1825 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1826
6baa8dbd
NT
1827#ifndef PERL_BUILD_DATE
1828# ifdef __DATE__
1829# ifdef __TIME__
1830# define PERL_BUILD_DATE __DATE__ " " __TIME__
1831# else
1832# define PERL_BUILD_DATE __DATE__
1833# endif
1834# endif
1835#endif
1836
1837#ifdef PERL_BUILD_DATE
4a5df386 1838 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1839 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1840 SVs_TEMP));
4a5df386
NC
1841#else
1842 PUSHs(&PL_sv_undef);
1843#endif
1844
4a5df386
NC
1845 for (i = 1; i <= local_patch_count; i++) {
1846 /* This will be an undef, if PL_localpatches[i] is NULL. */
1847 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1848 }
1849
1850 XSRETURN(entries);
1851}
1852
be71fc8f
NC
1853#define INCPUSH_UNSHIFT 0x01
1854#define INCPUSH_ADD_OLD_VERS 0x02
1855#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1856#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1857#define INCPUSH_NOT_BASEDIR 0x10
1858#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1859#define INCPUSH_ADD_SUB_DIRS \
1860 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1861
312caa8e 1862STATIC void *
14dd3ad8 1863S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1864{
27da23d5 1865 dVAR;
2f9285f8 1866 PerlIO *rsfp;
312caa8e 1867 int argc = PL_origargc;
8f42b153 1868 char **argv = PL_origargv;
e1ec3a88 1869 const char *scriptname = NULL;
402582ca 1870 bool dosearch = FALSE;
eb578fdb 1871 char c;
737c24fc 1872 bool doextract = FALSE;
bd61b366 1873 const char *cddir = NULL;
ab019eaa 1874#ifdef USE_SITECUSTOMIZE
20ef40cf 1875 bool minus_f = FALSE;
ab019eaa 1876#endif
95670bde 1877 SV *linestr_sv = NULL;
5486870f 1878 bool add_read_e_script = FALSE;
87606032 1879 U32 lex_start_flags = 0;
009d90df 1880
ca7b837b 1881 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1882
6224f72b 1883 init_main_stash();
54310121 1884
c7030b81
NC
1885 {
1886 const char *s;
6224f72b
GS
1887 for (argc--,argv++; argc > 0; argc--,argv++) {
1888 if (argv[0][0] != '-' || !argv[0][1])
1889 break;
6224f72b
GS
1890 s = argv[0]+1;
1891 reswitch:
47f56822 1892 switch ((c = *s)) {
729a02f2 1893 case 'C':
1d5472a9
GS
1894#ifndef PERL_STRICT_CR
1895 case '\r':
1896#endif
6224f72b
GS
1897 case ' ':
1898 case '0':
1899 case 'F':
1900 case 'a':
1901 case 'c':
1902 case 'd':
1903 case 'D':
1904 case 'h':
1905 case 'i':
1906 case 'l':
1907 case 'M':
1908 case 'm':
1909 case 'n':
1910 case 'p':
1911 case 's':
1912 case 'u':
1913 case 'U':
1914 case 'v':
599cee73
PM
1915 case 'W':
1916 case 'X':
6224f72b 1917 case 'w':
97bd5664 1918 if ((s = moreswitches(s)))
6224f72b
GS
1919 goto reswitch;
1920 break;
33b78306 1921
1dbad523 1922 case 't':
dc6d7f5c 1923#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1924 /* silently ignore */
dc6d7f5c 1925#elif defined(NO_TAINT_SUPPORT)
3231f579 1926 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1927 "Cowardly refusing to run with -t or -T flags");
1928#else
22f7c9c9 1929 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1930 if( !TAINTING_get ) {
1931 TAINT_WARN_set(TRUE);
1932 TAINTING_set(TRUE);
317ea90d 1933 }
284167a5 1934#endif
317ea90d
MS
1935 s++;
1936 goto reswitch;
6224f72b 1937 case 'T':
dc6d7f5c 1938#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1939 /* silently ignore */
dc6d7f5c 1940#elif defined(NO_TAINT_SUPPORT)
3231f579 1941 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1942 "Cowardly refusing to run with -t or -T flags");
1943#else
22f7c9c9 1944 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1945 TAINTING_set(TRUE);
1946 TAINT_WARN_set(FALSE);
1947#endif
6224f72b
GS
1948 s++;
1949 goto reswitch;
f86702cc 1950
bc9b29db
RH
1951 case 'E':
1952 PL_minus_E = TRUE;
924ba076 1953 /* FALLTHROUGH */
6224f72b 1954 case 'e':
f20b2998 1955 forbid_setid('e', FALSE);
3280af22 1956 if (!PL_e_script) {
396482e1 1957 PL_e_script = newSVpvs("");
5486870f 1958 add_read_e_script = TRUE;
6224f72b
GS
1959 }
1960 if (*++s)
3280af22 1961 sv_catpv(PL_e_script, s);
6224f72b 1962 else if (argv[1]) {
3280af22 1963 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1964 argc--,argv++;
1965 }
1966 else
47f56822 1967 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1968 sv_catpvs(PL_e_script, "\n");
6224f72b 1969 break;
afe37c7d 1970
20ef40cf 1971 case 'f':
f5542d3a 1972#ifdef USE_SITECUSTOMIZE
20ef40cf 1973 minus_f = TRUE;
f5542d3a 1974#endif
20ef40cf
GA
1975 s++;
1976 goto reswitch;
1977
6224f72b 1978 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1979 forbid_setid('I', FALSE);
bd61b366 1980 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1981 argc--,argv++;
1982 }
6224f72b 1983 if (s && *s) {
0df16ed7 1984 STRLEN len = strlen(s);
55b4bc1c 1985 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1986 }
1987 else
a67e862a 1988 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1989 break;
6224f72b 1990 case 'S':
f20b2998 1991 forbid_setid('S', FALSE);
6224f72b
GS
1992 dosearch = TRUE;
1993 s++;
1994 goto reswitch;
1995 case 'V':
7edfd0ef
NC
1996 {
1997 SV *opts_prog;
1998
7edfd0ef 1999 if (*++s != ':') {
37ca4a5b 2000 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2001 }
2002 else {
2003 ++s;
2004 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2005 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2006 0, s, 0);
2007 s += strlen(s);
2008 }
37ca4a5b 2009 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2010 /* don't look for script or read stdin */
2011 scriptname = BIT_BUCKET;
2012 goto reswitch;
6224f72b 2013 }
6224f72b 2014 case 'x':
737c24fc 2015 doextract = TRUE;
6224f72b 2016 s++;
304334da 2017 if (*s)
f4c556ac 2018 cddir = s;
6224f72b
GS
2019 break;
2020 case 0:
2021 break;
2022 case '-':
2023 if (!*++s || isSPACE(*s)) {
2024 argc--,argv++;
2025 goto switch_end;
2026 }
ee8bc8b7
NC
2027 /* catch use of gnu style long options.
2028 Both of these exit immediately. */
2029 if (strEQ(s, "version"))
2030 minus_v();
2031 if (strEQ(s, "help"))
2032 usage();
6224f72b 2033 s--;
924ba076 2034 /* FALLTHROUGH */
6224f72b 2035 default:
cea2e8a9 2036 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2037 }
2038 }
c7030b81
NC
2039 }
2040
6224f72b 2041 switch_end:
54310121 2042
c7030b81
NC
2043 {
2044 char *s;
2045
f675dbe5
CB
2046 if (
2047#ifndef SECURE_INTERNAL_GETENV
284167a5 2048 !TAINTING_get &&
f675dbe5 2049#endif
cf756827 2050 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2051 {
9e0b0d62
KW
2052 /* s points to static memory in getenv(), which may be overwritten at
2053 * any time; use a mortal copy instead */
2054 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2055
74288ac8
GS
2056 while (isSPACE(*s))
2057 s++;
317ea90d 2058 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2059#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2060 /* silently ignore */
dc6d7f5c 2061#elif defined(NO_TAINT_SUPPORT)
3231f579 2062 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2063 "Cowardly refusing to run with -t or -T flags");
2064#else
22f7c9c9 2065 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2066 TAINTING_set(TRUE);
2067 TAINT_WARN_set(FALSE);
2068#endif
317ea90d 2069 }
74288ac8 2070 else {
bd61b366 2071 char *popt_copy = NULL;
74288ac8 2072 while (s && *s) {
54913509 2073 const char *d;
74288ac8
GS
2074 while (isSPACE(*s))
2075 s++;
2076 if (*s == '-') {
2077 s++;
2078 if (isSPACE(*s))
2079 continue;
2080 }
4ea8f8fb 2081 d = s;
74288ac8
GS
2082 if (!*s)
2083 break;
2b622f1a 2084 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2085 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2086 while (++s && *s) {
2087 if (isSPACE(*s)) {
cf756827 2088 if (!popt_copy) {
bfa6c418
NC
2089 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2090 s = popt_copy + (s - d);
2091 d = popt_copy;
cf756827 2092 }
4ea8f8fb
MS
2093 *s++ = '\0';
2094 break;
2095 }
2096 }
1c4db469 2097 if (*d == 't') {
dc6d7f5c 2098#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2099 /* silently ignore */
dc6d7f5c 2100#elif defined(NO_TAINT_SUPPORT)
3231f579 2101 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2102 "Cowardly refusing to run with -t or -T flags");
2103#else
2104 if( !TAINTING_get) {
2105 TAINT_WARN_set(TRUE);
2106 TAINTING_set(TRUE);
317ea90d 2107 }
284167a5 2108#endif
1c4db469 2109 } else {
97bd5664 2110 moreswitches(d);
1c4db469 2111 }
6224f72b 2112 }
6224f72b
GS
2113 }
2114 }
c7030b81 2115 }
a0d0e21e 2116
c29067d7
CH
2117 /* Set $^X early so that it can be used for relocatable paths in @INC */
2118 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2119 assert (!TAINT_get);
c29067d7 2120 TAINT;
e2051532 2121 set_caret_X();
c29067d7
CH
2122 TAINT_NOT;
2123
43c0c913 2124#if defined(USE_SITECUSTOMIZE)
20ef40cf 2125 if (!minus_f) {
43c0c913 2126 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2127 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2128 ie a q() operator with a NUL byte as a the delimiter. This avoids
2129 problems with pathnames containing (say) ' */
43c0c913
NC
2130# ifdef PERL_IS_MINIPERL
2131 AV *const inc = GvAV(PL_incgv);
2132 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2133
2134 if (inc0) {
15870c5c
NC
2135 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2136 it should be reported immediately as a build failure. */
43c0c913
NC
2137 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2138 Perl_newSVpvf(aTHX_
5de87db5 2139 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2140 "do {local $!; -f $f }"
2141 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2142 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2143 }
2144# else
2145 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2146 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2147 if (raw_sitelib) {
2148 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2149 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2150 INCPUSH_CAN_RELOCATE);
2151 const char *const sitelib = SvPVX(sitelib_sv);
2152 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2153 Perl_newSVpvf(aTHX_
2154 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2155 0, SVfARG(sitelib), 0,
2156 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2157 assert (SvREFCNT(sitelib_sv) == 1);
2158 SvREFCNT_dec(sitelib_sv);
2159 }
43c0c913 2160# endif
20ef40cf
GA
2161 }
2162#endif
2163
6224f72b
GS
2164 if (!scriptname)
2165 scriptname = argv[0];
3280af22 2166 if (PL_e_script) {
6224f72b
GS
2167 argc++,argv--;
2168 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2169 }
bd61b366 2170 else if (scriptname == NULL) {
6224f72b
GS
2171#ifdef MSDOS
2172 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2173 moreswitches("h");
6224f72b
GS
2174#endif
2175 scriptname = "-";
2176 }
2177
284167a5 2178 assert (!TAINT_get);
2cace6ac 2179 init_perllib();
6224f72b 2180
a52eba0e 2181 {
f20b2998 2182 bool suidscript = FALSE;
829372d3 2183
8d113837 2184 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2185 if (!rsfp) {
2186 rsfp = PerlIO_stdin();
87606032 2187 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2188 }
6224f72b 2189
b24bc095 2190 validate_suid(rsfp);
6224f72b 2191
64ca3a65 2192#ifndef PERL_MICRO
a52eba0e
NC
2193# if defined(SIGCHLD) || defined(SIGCLD)
2194 {
2195# ifndef SIGCHLD
2196# define SIGCHLD SIGCLD
2197# endif
2198 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2199 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2200 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2201 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2202 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2203 }
0b5b802d 2204 }
a52eba0e 2205# endif
64ca3a65 2206#endif
0b5b802d 2207
737c24fc 2208 if (doextract) {
faef540c 2209
f20b2998 2210 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2211 setuid scripts. */
2212 forbid_setid('x', suidscript);
f20b2998 2213 /* Hence you can't get here if suidscript is true */
faef540c 2214
95670bde
NC
2215 linestr_sv = newSV_type(SVt_PV);
2216 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2217 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2218 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2219 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2220 }
f4c556ac 2221 }
6224f72b 2222
ea726b52 2223 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2224 CvUNIQUE_on(PL_compcv);
2225
eacbb379 2226 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2227
dd69841b
BB
2228 PL_isarev = newHV();
2229
0c4f7ff0 2230 boot_core_PerlIO();
6224f72b 2231 boot_core_UNIVERSAL();
e1a479c5 2232 boot_core_mro();
4a5df386 2233 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2234
2235 if (xsinit)
acfe0abc 2236 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2237#ifndef PERL_MICRO
739a0b84 2238#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2239 init_os_extras();
6224f72b 2240#endif
64ca3a65 2241#endif
6224f72b 2242
29209bc5 2243#ifdef USE_SOCKS
1b9c9cf5
DH
2244# ifdef HAS_SOCKS5_INIT
2245 socks5_init(argv[0]);
2246# else
29209bc5 2247 SOCKSinit(argv[0]);
1b9c9cf5 2248# endif
ac27b0f5 2249#endif
29209bc5 2250
6224f72b
GS
2251 init_predump_symbols();
2252 /* init_postdump_symbols not currently designed to be called */
2253 /* more than once (ENV isn't cleared first, for example) */
2254 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2255 if (!PL_do_undump)
6224f72b
GS
2256 init_postdump_symbols(argc,argv,env);
2257
27da23d5
JH
2258 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2259 * or explicitly in some platforms.
085a54d9 2260 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2261 * look like the user wants to use UTF-8. */
a0fd4948 2262#if defined(__SYMBIAN32__)
27da23d5
JH
2263 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2264#endif
e27b5b51 2265# ifndef PERL_IS_MINIPERL
06e66572
JH
2266 if (PL_unicode) {
2267 /* Requires init_predump_symbols(). */
a05d7ebb 2268 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2269 IO* io;
2270 PerlIO* fp;
2271 SV* sv;
2272
a05d7ebb 2273 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2274 * and the default open disciplines. */
a05d7ebb
JH
2275 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2276 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2277 (fp = IoIFP(io)))
2278 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2279 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2280 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2281 (fp = IoOFP(io)))
2282 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2283 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2284 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2285 (fp = IoOFP(io)))
2286 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2287 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2288 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2289 SVt_PV)))) {
a05d7ebb
JH
2290 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2291 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2292 if (in) {
2293 if (out)
76f68e9b 2294 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2295 else
76f68e9b 2296 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2297 }
2298 else if (out)
76f68e9b 2299 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2300 SvSETMAGIC(sv);
2301 }
b310b053
JH
2302 }
2303 }
e27b5b51 2304#endif
b310b053 2305
c7030b81
NC
2306 {
2307 const char *s;
4ffa73a3
JH
2308 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2309 if (strEQ(s, "unsafe"))
2310 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2311 else if (strEQ(s, "safe"))
2312 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2313 else
2314 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2315 }
c7030b81 2316 }
4ffa73a3 2317
81d86705 2318
87606032 2319 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2320 SvREFCNT_dec(linestr_sv);
95670bde 2321
219f7226 2322 PL_subname = newSVpvs("main");
6224f72b 2323
5486870f
DM
2324 if (add_read_e_script)
2325 filter_add(read_e_script, NULL);
2326
6224f72b
GS
2327 /* now parse the script */
2328
93189314 2329 SETERRNO(0,SS_NORMAL);
28ac2b49 2330 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2331 if (PL_minus_c)
cea2e8a9 2332 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2333 else {
cea2e8a9 2334 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2335 PL_origfilename);
6224f72b
GS
2336 }
2337 }
57843af0 2338 CopLINE_set(PL_curcop, 0);
03d9f026 2339 SET_CURSTASH(PL_defstash);
3280af22
NIS
2340 if (PL_e_script) {
2341 SvREFCNT_dec(PL_e_script);
a0714e2c 2342 PL_e_script = NULL;
6224f72b
GS
2343 }
2344
3280af22 2345 if (PL_do_undump)
6224f72b
GS
2346 my_unexec();
2347
57843af0
GS
2348 if (isWARN_ONCE) {
2349 SAVECOPFILE(PL_curcop);
2350 SAVECOPLINE(PL_curcop);
3280af22 2351 gv_check(PL_defstash);
57843af0 2352 }
6224f72b
GS
2353
2354 LEAVE;
2355 FREETMPS;
2356
2357#ifdef MYMALLOC
f6a607bc
RGS
2358 {
2359 const char *s;
22ff3130
HS
2360 UV uv;
2361 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2362 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2363 dump_mstats("after compilation:");
f6a607bc 2364 }
6224f72b
GS
2365#endif
2366
2367 ENTER;
febb3a6d 2368 PL_restartjmpenv = NULL;
3280af22 2369 PL_restartop = 0;
312caa8e 2370 return NULL;
6224f72b
GS
2371}
2372
954c1994
GS
2373/*
2374=for apidoc perl_run
2375
2376Tells a Perl interpreter to run. See L<perlembed>.
2377
2378=cut
2379*/
2380
6224f72b 2381int
0cb96387 2382perl_run(pTHXx)
6224f72b 2383{
6224f72b 2384 I32 oldscope;
14dd3ad8 2385 int ret = 0;
db36c5a1 2386 dJMPENV;
6224f72b 2387
7918f24d
NC
2388 PERL_ARGS_ASSERT_PERL_RUN;
2389#ifndef MULTIPLICITY
ed6c66dd 2390 PERL_UNUSED_ARG(my_perl);
7918f24d 2391#endif
9d4ba2ae 2392
3280af22 2393 oldscope = PL_scopestack_ix;
96e176bf
CL
2394#ifdef VMS
2395 VMSISH_HUSHED = 0;
2396#endif
6224f72b 2397
14dd3ad8 2398 JMPENV_PUSH(ret);
6224f72b
GS
2399 switch (ret) {
2400 case 1:
2401 cxstack_ix = -1; /* start context stack again */
312caa8e 2402 goto redo_body;
14dd3ad8 2403 case 0: /* normal completion */
14dd3ad8
GS
2404 redo_body:
2405 run_body(oldscope);
924ba076 2406 /* FALLTHROUGH */
14dd3ad8 2407 case 2: /* my_exit() */
3280af22 2408 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2409 LEAVE;
2410 FREETMPS;
03d9f026 2411 SET_CURSTASH(PL_defstash);
3a1ee7e8 2412 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2413 PL_endav && !PL_minus_c) {
ca7b837b 2414 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2415 call_list(oldscope, PL_endav);
9ebf26ad 2416 }
6224f72b
GS
2417#ifdef MYMALLOC
2418 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2419 dump_mstats("after execution: ");
2420#endif
37038d91 2421 ret = STATUS_EXIT;
14dd3ad8 2422 break;
6224f72b 2423 case 3:
312caa8e
CS
2424 if (PL_restartop) {
2425 POPSTACK_TO(PL_mainstack);
2426 goto redo_body;
6224f72b 2427 }
5637ef5b 2428 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2429 FREETMPS;
14dd3ad8
GS
2430 ret = 1;
2431 break;
6224f72b
GS
2432 }
2433
14dd3ad8
GS
2434 JMPENV_POP;
2435 return ret;
312caa8e
CS
2436}
2437
dd374669 2438STATIC void
14dd3ad8
GS
2439S_run_body(pTHX_ I32 oldscope)
2440{
d3b97530
DM
2441 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2442 PL_sawampersand ? "Enabling" : "Omitting",
2443 (unsigned int)(PL_sawampersand)));
6224f72b 2444
3280af22 2445 if (!PL_restartop) {
cf2782cd 2446#ifdef DEBUGGING
f0e3f042
CS
2447 if (DEBUG_x_TEST || DEBUG_B_TEST)
2448 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2449 if (!DEBUG_q_TEST)
2450 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2451#endif
6224f72b 2452
3280af22 2453 if (PL_minus_c) {
bf49b057 2454 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2455 my_exit(0);
2456 }
3280af22 2457 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2458 PL_DBsingle_iv = 1;
9ebf26ad 2459 if (PL_initav) {
ca7b837b 2460 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2461 call_list(oldscope, PL_initav);
9ebf26ad 2462 }
f1fac472 2463#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2464 if (PL_main_root && PL_main_root->op_slabbed)
2465 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2466#endif
6224f72b
GS
2467 }
2468
2469 /* do it */
2470
ca7b837b 2471 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2472
3280af22 2473 if (PL_restartop) {
febb3a6d 2474 PL_restartjmpenv = NULL;
533c011a 2475 PL_op = PL_restartop;
3280af22 2476 PL_restartop = 0;
cea2e8a9 2477 CALLRUNOPS(aTHX);
6224f72b 2478 }
3280af22
NIS
2479 else if (PL_main_start) {
2480 CvDEPTH(PL_main_cv) = 1;
533c011a 2481 PL_op = PL_main_start;
cea2e8a9 2482 CALLRUNOPS(aTHX);
6224f72b 2483 }
f6b3007c 2484 my_exit(0);
e5964223 2485 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2486}
2487
954c1994 2488/*
ccfc67b7
JH
2489=head1 SV Manipulation Functions
2490
954c1994
GS
2491=for apidoc p||get_sv
2492
64ace3f8 2493Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2494C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2495Perl variable does not exist then it will be created. If C<flags> is zero
2496and the variable does not exist then NULL is returned.
954c1994
GS
2497
2498=cut
2499*/
2500
6224f72b 2501SV*
64ace3f8 2502Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2503{
2504 GV *gv;
7918f24d
NC
2505
2506 PERL_ARGS_ASSERT_GET_SV;
2507
64ace3f8 2508 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2509 if (gv)
2510 return GvSV(gv);
a0714e2c 2511 return NULL;
6224f72b
GS
2512}
2513
954c1994 2514/*
ccfc67b7
JH
2515=head1 Array Manipulation Functions
2516
954c1994
GS
2517=for apidoc p||get_av
2518
f0b90de1
SF
2519Returns the AV of the specified Perl global or package array with the given
2520name (so it won't work on lexical variables). C<flags> are passed
72d33970 2521to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2522Perl variable does not exist then it will be created. If C<flags> is zero
2523and the variable does not exist then NULL is returned.
954c1994 2524
f0b90de1
SF
2525Perl equivalent: C<@{"$name"}>.
2526
954c1994
GS
2527=cut
2528*/
2529
6224f72b 2530AV*
cbfd0a87 2531Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2532{
cbfd0a87 2533 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2534
2535 PERL_ARGS_ASSERT_GET_AV;
2536
cbfd0a87 2537 if (flags)
6224f72b
GS
2538 return GvAVn(gv);
2539 if (gv)
2540 return GvAV(gv);
7d49f689 2541 return NULL;
6224f72b
GS
2542}
2543
954c1994 2544/*
ccfc67b7
JH
2545=head1 Hash Manipulation Functions
2546
954c1994
GS
2547=for apidoc p||get_hv
2548
6673a63c 2549Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2550C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2551Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2552and the variable does not exist then C<NULL> is returned.
954c1994
GS
2553
2554=cut
2555*/
2556
6224f72b 2557HV*
6673a63c 2558Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2559{
6673a63c 2560 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2561
2562 PERL_ARGS_ASSERT_GET_HV;
2563
6673a63c 2564 if (flags)
a0d0e21e
LW
2565 return GvHVn(gv);
2566 if (gv)
2567 return GvHV(gv);
5c284bb0 2568 return NULL;
a0d0e21e
LW
2569}
2570
954c1994 2571/*
ccfc67b7
JH
2572=head1 CV Manipulation Functions
2573
780a5241
NC
2574=for apidoc p||get_cvn_flags
2575
2576Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2577C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2578exist then it will be declared (which has the same effect as saying
2579C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2580then NULL is returned.
2581
954c1994
GS
2582=for apidoc p||get_cv
2583
780a5241 2584Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2585
2586=cut
2587*/
2588
a0d0e21e 2589CV*
780a5241 2590Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2591{
780a5241 2592 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2593
2594 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2595
334dda80
FC
2596 /* XXX this is probably not what they think they're getting.
2597 * It has the same effect as "sub name;", i.e. just a forward
2598 * declaration! */
780a5241 2599 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2600 return newSTUB(gv,0);
780a5241 2601 }
a0d0e21e 2602 if (gv)
8ebc5c01 2603 return GvCVu(gv);
601f1833 2604 return NULL;
a0d0e21e
LW
2605}
2606
2c67934f
NC
2607/* Nothing in core calls this now, but we can't replace it with a macro and
2608 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2609CV*
2610Perl_get_cv(pTHX_ const char *name, I32 flags)
2611{
7918f24d
NC
2612 PERL_ARGS_ASSERT_GET_CV;
2613
780a5241
NC
2614 return get_cvn_flags(name, strlen(name), flags);
2615}
2616
79072805
LW
2617/* Be sure to refetch the stack pointer after calling these routines. */
2618
954c1994 2619/*
ccfc67b7
JH
2620
2621=head1 Callback Functions
2622
954c1994
GS
2623=for apidoc p||call_argv
2624
f0b90de1 2625Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2626with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2627L<perlcall>.
f0b90de1
SF
2628
2629Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2630
2631=cut
2632*/
2633
a0d0e21e 2634I32
5aaab254 2635Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2636
8ac85365
NIS
2637 /* See G_* flags in cop.h */
2638 /* null terminated arg list */
8990e307 2639{
a0d0e21e 2640 dSP;
8990e307 2641
7918f24d
NC
2642 PERL_ARGS_ASSERT_CALL_ARGV;
2643
924508f0 2644 PUSHMARK(SP);
3dc78631
DM
2645 while (*argv) {
2646 mXPUSHs(newSVpv(*argv,0));
2647 argv++;
8990e307 2648 }
3dc78631 2649 PUTBACK;
864dbfa3 2650 return call_pv(sub_name, flags);
8990e307
LW
2651}
2652
954c1994
GS
2653/*
2654=for apidoc p||call_pv
2655
2656Performs a callback to the specified Perl sub. See L<perlcall>.
2657
2658=cut
2659*/
2660
a0d0e21e 2661I32
864dbfa3 2662Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2663 /* name of the subroutine */
2664 /* See G_* flags in cop.h */
a0d0e21e 2665{
7918f24d
NC
2666 PERL_ARGS_ASSERT_CALL_PV;
2667
0da0e728 2668 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2669}
2670
954c1994
GS
2671/*
2672=for apidoc p||call_method
2673
2674Performs a callback to the specified Perl method. The blessed object must
2675be on the stack. See L<perlcall>.
2676
2677=cut
2678*/
2679
a0d0e21e 2680I32
864dbfa3 2681Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2682 /* name of the subroutine */
2683 /* See G_* flags in cop.h */
a0d0e21e 2684{
46ca9bac 2685 STRLEN len;
c106c2be 2686 SV* sv;
7918f24d
NC
2687 PERL_ARGS_ASSERT_CALL_METHOD;
2688
46ca9bac 2689 len = strlen(methname);
c106c2be
RZ
2690 sv = flags & G_METHOD_NAMED
2691 ? sv_2mortal(newSVpvn_share(methname, len,0))
2692 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2693
c106c2be 2694 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2695}
2696
2697/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2698/*
2699=for apidoc p||call_sv
2700
078e2213
TC
2701Performs a callback to the Perl sub specified by the SV.
2702
7c0c544c 2703If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2704SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2705or C<SvPV(sv)> will be used as the name of the sub to call.
2706
2707If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2708C<SvPV(sv)> will be used as the name of the method to call.
2709
2710If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2711the name of the method to call.
2712
2713Some other values are treated specially for internal use and should
2714not be depended on.
2715
2716See L<perlcall>.
954c1994
GS
2717
2718=cut
2719*/
2720
a0d0e21e 2721I32
001d637e 2722Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2723 /* See G_* flags in cop.h */
a0d0e21e 2724{
5b434c73 2725 dVAR;
a0d0e21e 2726 LOGOP myop; /* fake syntax tree node */
b46e009d 2727 METHOP method_op;
aa689395 2728 I32 oldmark;
8ea43dc8 2729 VOL I32 retval = 0;
54310121 2730 bool oldcatch = CATCH_GET;
6224f72b 2731 int ret;
c4420975 2732 OP* const oldop = PL_op;
db36c5a1 2733 dJMPENV;
1e422769 2734
7918f24d
NC
2735 PERL_ARGS_ASSERT_CALL_SV;
2736
a0d0e21e
LW
2737 if (flags & G_DISCARD) {
2738 ENTER;
2739 SAVETMPS;
2740 }
2f8edad0
NC
2741 if (!(flags & G_WANT)) {
2742 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2743 */
2744 flags |= G_SCALAR;
2745 }
a0d0e21e 2746
aa689395 2747 Zero(&myop, 1, LOGOP);
f51d4af5 2748 if (!(flags & G_NOARGS))
aa689395 2749 myop.op_flags |= OPf_STACKED;
4f911530 2750 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2751 SAVEOP();
533c011a 2752 PL_op = (OP*)&myop;
aa689395 2753
8c9009ad 2754 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2755 dSP;
2756 EXTEND(SP, 1);
8c9009ad
DD
2757 PUSHs(sv);
2758 PUTBACK;
5b434c73 2759 }
aa689395 2760 oldmark = TOPMARK;
a0d0e21e 2761
3280af22 2762 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2763 /* Handle first BEGIN of -d. */
3280af22 2764 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2765 /* Try harder, since this may have been a sighandler, thus
2766 * curstash may be meaningless. */
ea726b52 2767 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2768 && !(flags & G_NODEBUG))
5ff48db8 2769 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2770
c106c2be 2771 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2772 Zero(&method_op, 1, METHOP);
2773 method_op.op_next = (OP*)&myop;
2774 PL_op = (OP*)&method_op;
c106c2be 2775 if ( flags & G_METHOD_NAMED ) {
b46e009d 2776 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2777 method_op.op_type = OP_METHOD_NAMED;
2778 method_op.op_u.op_meth_sv = sv;
c106c2be 2779 } else {
b46e009d 2780 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2781 method_op.op_type = OP_METHOD;
c106c2be
RZ
2782 }
2783 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2784 myop.op_type = OP_ENTERSUB;
968b3946
GS
2785 }
2786
312caa8e 2787 if (!(flags & G_EVAL)) {
0cdb2077 2788 CATCH_SET(TRUE);
d6f07c05 2789 CALL_BODY_SUB((OP*)&myop);
312caa8e 2790 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2791 CATCH_SET(oldcatch);
312caa8e
CS
2792 }
2793 else {
8e90e786 2794 I32 old_cxix;
d78bda3d 2795 myop.op_other = (OP*)&myop;
101d6365 2796 (void)POPMARK;
8e90e786 2797 old_cxix = cxstack_ix;
274ed8ae 2798 create_eval_scope(NULL, flags|G_FAKINGEVAL);
101d6365 2799 (void)INCMARK;
a0d0e21e 2800
14dd3ad8 2801 JMPENV_PUSH(ret);
edb2152a 2802
6224f72b
GS
2803 switch (ret) {
2804 case 0:
14dd3ad8 2805 redo_body:
d6f07c05 2806 CALL_BODY_SUB((OP*)&myop);
312caa8e 2807 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2808 if (!(flags & G_KEEPERR)) {
ab69dbc2 2809 CLEAR_ERRSV();
8433848b 2810 }
a0d0e21e 2811 break;
6224f72b 2812 case 1:
f86702cc 2813 STATUS_ALL_FAILURE;
924ba076 2814 /* FALLTHROUGH */
6224f72b 2815 case 2:
a0d0e21e 2816 /* my_exit() was called */
03d9f026 2817 SET_CURSTASH(PL_defstash);
a0d0e21e 2818 FREETMPS;
14dd3ad8 2819 JMPENV_POP;
f86702cc 2820 my_exit_jump();
e5964223 2821 NOT_REACHED; /* NOTREACHED */
6224f72b 2822 case 3:
3280af22 2823 if (PL_restartop) {
febb3a6d 2824 PL_restartjmpenv = NULL;
533c011a 2825 PL_op = PL_restartop;
3280af22 2826 PL_restartop = 0;
312caa8e 2827 goto redo_body;
a0d0e21e 2828 }
3280af22 2829 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2830 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2831 retval = 0;
2832 else {
2833 retval = 1;
3280af22 2834 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2835 }
312caa8e 2836 break;
a0d0e21e 2837 }
a0d0e21e 2838
8e90e786
DM
2839 /* if we croaked, depending on how we croaked the eval scope
2840 * may or may not have already been popped */
2841 if (cxstack_ix > old_cxix) {
2842 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2843 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2844 delete_eval_scope();
8e90e786 2845 }
14dd3ad8 2846 JMPENV_POP;
a0d0e21e 2847 }
1e422769 2848
a0d0e21e 2849 if (flags & G_DISCARD) {
3280af22 2850 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2851 retval = 0;
2852 FREETMPS;
2853 LEAVE;
2854 }
533c011a 2855 PL_op = oldop;
a0d0e21e
LW
2856 return retval;
2857}
2858
6e72f9df 2859/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2860
954c1994
GS
2861/*
2862=for apidoc p||eval_sv
2863
72d33970 2864Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2865as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2866
2867=cut
2868*/
2869
a0d0e21e 2870I32
864dbfa3 2871Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2872
8ac85365 2873 /* See G_* flags in cop.h */
a0d0e21e 2874{
97aff369 2875 dVAR;
a0d0e21e 2876 UNOP myop; /* fake syntax tree node */
5b434c73 2877 VOL I32 oldmark;
8ea43dc8 2878 VOL I32 retval = 0;
6224f72b 2879 int ret;
c4420975 2880 OP* const oldop = PL_op;
db36c5a1 2881 dJMPENV;
84902520 2882
7918f24d
NC
2883 PERL_ARGS_ASSERT_EVAL_SV;
2884
4633a7c4
LW
2885 if (flags & G_DISCARD) {
2886 ENTER;
2887 SAVETMPS;
2888 }
2889
462e5cf6 2890 SAVEOP();
533c011a 2891 PL_op = (OP*)&myop;
5ff48db8 2892 Zero(&myop, 1, UNOP);
5b434c73
DD
2893 {
2894 dSP;
2895 oldmark = SP - PL_stack_base;
2896 EXTEND(SP, 1);
2897 PUSHs(sv);
2898 PUTBACK;
2899 }
79072805 2900
4633a7c4
LW
2901 if (!(flags & G_NOARGS))
2902 myop.op_flags = OPf_STACKED;
6e72f9df 2903 myop.op_type = OP_ENTEREVAL;
4f911530 2904 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2905 if (flags & G_KEEPERR)
2906 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2907
2908 if (flags & G_RE_REPARSING)
2909 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2910
dedbcade 2911 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 2912 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
2913 TAINT_PROPER("eval_sv()");
2914
14dd3ad8 2915 JMPENV_PUSH(ret);
6224f72b
GS
2916 switch (ret) {
2917 case 0:
14dd3ad8 2918 redo_body:
2ba65d5f
DM
2919 if (PL_op == (OP*)(&myop)) {
2920 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2921 if (!PL_op)
2922 goto fail; /* failed in compilation */
2923 }
4aca2f62 2924 CALLRUNOPS(aTHX);
312caa8e 2925 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2926 if (!(flags & G_KEEPERR)) {
ab69dbc2 2927 CLEAR_ERRSV();
8433848b 2928 }
4633a7c4 2929 break;
6224f72b 2930 case 1:
f86702cc 2931 STATUS_ALL_FAILURE;
924ba076 2932 /* FALLTHROUGH */
6224f72b 2933 case 2:
4633a7c4 2934 /* my_exit() was called */
03d9f026 2935 SET_CURSTASH(PL_defstash);
4633a7c4 2936 FREETMPS;
14dd3ad8 2937 JMPENV_POP;
f86702cc 2938 my_exit_jump();
e5964223 2939 NOT_REACHED; /* NOTREACHED */
6224f72b 2940 case 3:
3280af22 2941 if (PL_restartop) {
febb3a6d 2942 PL_restartjmpenv = NULL;
533c011a 2943 PL_op = PL_restartop;
3280af22 2944 PL_restartop = 0;
312caa8e 2945 goto redo_body;
4633a7c4 2946 }
4aca2f62 2947 fail:
3280af22 2948 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2949 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2950 retval = 0;
2951 else {
2952 retval = 1;
3280af22 2953 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2954 }
312caa8e 2955 break;
4633a7c4
LW
2956 }
2957
14dd3ad8 2958 JMPENV_POP;
4633a7c4 2959 if (flags & G_DISCARD) {
3280af22 2960 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2961 retval = 0;
2962 FREETMPS;
2963 LEAVE;
2964 }
533c011a 2965 PL_op = oldop;
4633a7c4
LW
2966 return retval;
2967}
2968
954c1994
GS
2969/*
2970=for apidoc p||eval_pv
2971
422791e4 2972Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
2973
2974=cut
2975*/
2976
137443ea 2977SV*
864dbfa3 2978Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2979{
137443ea
PP
2980 SV* sv = newSVpv(p, 0);
2981
7918f24d
NC
2982 PERL_ARGS_ASSERT_EVAL_PV;
2983
864dbfa3 2984 eval_sv(sv, G_SCALAR);
137443ea
PP
2985 SvREFCNT_dec(sv);
2986
ed1786ad
DD
2987 {
2988 dSP;
2989 sv = POPs;
2990 PUTBACK;
2991 }
137443ea 2992
eed484f9
DD
2993 /* just check empty string or undef? */
2994 if (croak_on_error) {
2995 SV * const errsv = ERRSV;
2996 if(SvTRUE_NN(errsv))
2997 /* replace with croak_sv? */
2998 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2999 }
137443ea
PP
3000
3001 return sv;
3002}
3003
4633a7c4
LW
3004/* Require a module. */
3005
954c1994 3006/*
ccfc67b7
JH
3007=head1 Embedding Functions
3008
954c1994
GS
3009=for apidoc p||require_pv
3010
7d3fb230
BS
3011Tells Perl to C<require> the file named by the string argument. It is
3012analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3013implemented that way; consider using load_module instead.
954c1994 3014
7d3fb230 3015=cut */
954c1994 3016
4633a7c4 3017void
864dbfa3 3018Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3019{
d3acc0f7 3020 dSP;
97aff369 3021 SV* sv;
7918f24d
NC
3022
3023 PERL_ARGS_ASSERT_REQUIRE_PV;
3024
e788e7d3 3025 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3026 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3027 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3028 POPSTACK;
79072805
LW
3029}
3030
76e3520e 3031STATIC void
b6f82619 3032S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3033{
ab821d7f 3034 /* This message really ought to be max 23 lines.
75c72d73 3035 * Removed -h because the user already knows that option. Others? */
fb73857a 3036
1566c39d
NC
3037 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3038 minimum of 509 character string literals. */
27da23d5 3039 static const char * const usage_msg[] = {
1566c39d
NC
3040" -0[octal] specify record separator (\\0, if no argument)\n"
3041" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3042" -C[number/list] enables the listed Unicode features\n"
3043" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3044" -d[:debugger] run program under debugger\n"
3045" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3046" -e program one line of program (several -e's allowed, omit programfile)\n"
3047" -E program like -e, but enables all optional features\n"
3048" -f don't do $sitelib/sitecustomize.pl at startup\n"
3049" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3050" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3051" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3052" -l[octal] enable line ending processing, specifies line terminator\n"
3053" -[mM][-]module execute \"use/no module...\" before executing program\n"
3054" -n assume \"while (<>) { ... }\" loop around program\n"
3055" -p assume loop like -n but print line also, like sed\n"
3056" -s enable rudimentary parsing for switches after programfile\n"
3057" -S look for programfile using PATH environment variable\n",
3058" -t enable tainting warnings\n"
3059" -T enable tainting checks\n"
3060" -u dump core after parsing program\n"
3061" -U allow unsafe operations\n"
3062" -v print version, patchlevel and license\n"
3063" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3064" -w enable many useful warnings\n"
1566c39d
NC
3065" -W enable all warnings\n"
3066" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3067" -X disable all warnings\n"
3068" \n"
3069"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3070NULL
3071};
27da23d5 3072 const char * const *p = usage_msg;
1566c39d 3073 PerlIO *out = PerlIO_stdout();
fb73857a 3074
1566c39d
NC
3075 PerlIO_printf(out,
3076 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3077 PL_origargv[0]);
fb73857a 3078 while (*p)
1566c39d 3079 PerlIO_puts(out, *p++);
b6f82619 3080 my_exit(0);
4633a7c4
LW
3081}
3082
b4ab917c
DM
3083/* convert a string of -D options (or digits) into an int.
3084 * sets *s to point to the char after the options */
3085
3086#ifdef DEBUGGING
3087int
e1ec3a88 3088Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3089{
27da23d5 3090 static const char * const usage_msgd[] = {
651b8f1a
NC
3091 " Debugging flag values: (see also -d)\n"
3092 " p Tokenizing and parsing (with v, displays parse stack)\n"
3093 " s Stack snapshots (with v, displays all stacks)\n"
3094 " l Context (loop) stack processing\n"
3095 " t Trace execution\n"
3096 " o Method and overloading resolution\n",
3097 " c String/numeric conversions\n"
3098 " P Print profiling info, source file input state\n"
3099 " m Memory and SV allocation\n"
3100 " f Format processing\n"
3101 " r Regular expression parsing and execution\n"
3102 " x Syntax tree dump\n",
3103 " u Tainting checks\n"
3104 " H Hash dump -- usurps values()\n"
3105 " X Scratchpad allocation\n"
3106 " D Cleaning up\n"
56967202 3107 " S Op slab allocation\n"
651b8f1a
NC
3108 " T Tokenising\n"
3109 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3110 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3111 " v Verbose: use in conjunction with other flags\n"
3112 " C Copy On Write\n"
3113 " A Consistency checks on internal structures\n"
3114 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3115 " M trace smart match resolution\n"
3116 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3117 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3118 NULL
3119 };
22ff3130 3120 UV uv = 0;
7918f24d
NC
3121
3122 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3123
b4ab917c
DM
3124 if (isALPHA(**s)) {
3125 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3126 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3127
0eb30aeb 3128 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3129 const char * const d = strchr(debopts,**s);
b4ab917c 3130 if (d)
22ff3130 3131 uv |= 1 << (d - debopts);
b4ab917c 3132 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3133 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3134 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3135 }
3136 }
e6e64d9b 3137 else if (isDIGIT(**s)) {
96e440d2 3138 const char* e;
22ff3130 3139 if (grok_atoUV(*s, &uv, &e))
96e440d2 3140 *s = e;
0eb30aeb 3141 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3142 }
ddcf8bc1 3143 else if (givehelp) {
06e869a4 3144 const char *const *p = usage_msgd;
651b8f1a 3145 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3146 }
22ff3130 3147 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3148}
3149#endif
3150
79072805
LW
3151/* This routine handles any switches that can be given during run */
3152
c7030b81
NC
3153const char *
3154Perl_moreswitches(pTHX_ const char *s)
79072805 3155{
27da23d5 3156 dVAR;
84c133a0 3157 UV rschar;
0544e6df 3158 const char option = *s; /* used to remember option in -m/-M code */
79072805 3159
7918f24d
NC
3160 PERL_ARGS_ASSERT_MORESWITCHES;
3161
79072805
LW
3162 switch (*s) {
3163 case '0':
a863c7d1 3164 {
f2095865 3165 I32 flags = 0;
a3b680e6 3166 STRLEN numlen;
f2095865
JH
3167
3168 SvREFCNT_dec(PL_rs);
3169 if (s[1] == 'x' && s[2]) {
a3b680e6 3170 const char *e = s+=2;
f2095865
JH
3171 U8 *tmps;
3172
a3b680e6
AL
3173 while (*e)
3174 e++;
f2095865
JH
3175 numlen = e - s;
3176 flags = PERL_SCAN_SILENT_ILLDIGIT;
3177 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3178 if (s + numlen < e) {
3179 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3180 numlen = 0;
3181 s--;
3182 }
396482e1 3183 PL_rs = newSVpvs("");
5f560d8a 3184 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865
JH
3185 tmps = (U8*)SvPVX(PL_rs);
3186 uvchr_to_utf8(tmps, rschar);
5f560d8a 3187 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3188 SvUTF8_on(PL_rs);
3189 }
3190 else {
3191 numlen = 4;
3192 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3193 if (rschar & ~((U8)~0))
3194 PL_rs = &PL_sv_undef;
3195 else if (!rschar && numlen >= 2)
396482e1 3196 PL_rs = newSVpvs("");
f2095865
JH
3197 else {
3198 char ch = (char)rschar;
3199 PL_rs = newSVpvn(&ch, 1);
3200 }
3201 }
64ace3f8 3202 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3203 return s + numlen;
a863c7d1 3204 }
46487f74 3205 case 'C':
a05d7ebb 3206 s++;
dd374669 3207 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3208 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3209 PL_utf8cache = -1;
46487f74 3210 return s;
2304df62 3211 case 'F':
5fc691f1 3212 PL_minus_a = TRUE;
3280af22 3213 PL_minus_F = TRUE;
24ffa309 3214 PL_minus_n = TRUE;
ebce5377
RGS
3215 PL_splitstr = ++s;
3216 while (*s && !isSPACE(*s)) ++s;
e49e380e 3217 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3218 return s;
79072805 3219 case 'a':
3280af22 3220 PL_minus_a = TRUE;
24ffa309 3221 PL_minus_n = TRUE;
79072805
LW
3222 s++;
3223 return s;
3224 case 'c':
3280af22 3225 PL_minus_c = TRUE;
79072805
LW
3226 s++;
3227 return s;
3228 case 'd':
f20b2998 3229 forbid_setid('d', FALSE);
4633a7c4 3230 s++;
2cbb2ee1
RGS
3231
3232 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3233 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3234 ++s;
3235 my_setenv("PERL5DB_THREADED", "1");
3236 }
3237
70c94a19
RR
3238 /* The following permits -d:Mod to accepts arguments following an =
3239 in the fashion that -MSome::Mod does. */
3240 if (*s == ':' || *s == '=') {
b19934fb
NC
3241 const char *start;
3242 const char *end;
3243 SV *sv;
3244
3245 if (*++s == '-') {
3246 ++s;
3247 sv = newSVpvs("no Devel::");
3248 } else {
3249 sv = newSVpvs("use Devel::");
3250 }
3251
3252 start = s;
3253 end = s + strlen(s);
f85893a1 3254
b19934fb 3255 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3256 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3257 if (*s != '=')
f85893a1 3258 sv_catpvn(sv, start, end - start);
70c94a19
RR
3259 else {
3260 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3261 /* Don't use NUL as q// delimiter here, this string goes in the
3262 * environment. */
3263 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3264 }
f85893a1 3265 s = end;
184f32ec 3266 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3267 SvREFCNT_dec(sv);
4633a7c4 3268 }
ed094faf 3269 if (!PL_perldb) {
3280af22 3270 PL_perldb = PERLDB_ALL;
a0d0e21e 3271 init_debugger();
ed094faf 3272 }
79072805
LW
3273 return s;
3274 case 'D':
0453d815 3275 {
79072805 3276#ifdef DEBUGGING
f20b2998 3277 forbid_setid('D', FALSE);
b4ab917c 3278 s++;
dd374669 3279 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3280#else /* !DEBUGGING */
0453d815 3281 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3282 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3283 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3284 for (s++; isWORDCHAR(*s); s++) ;
79072805 3285#endif
79072805 3286 return s;
2b5060ae 3287 NOT_REACHED; /* NOTREACHED */
0453d815 3288 }
4633a7c4 3289 case 'h':
b6f82619 3290 usage();
2b5060ae
DM
3291 NOT_REACHED; /* NOTREACHED */
3292
79072805 3293 case 'i':
43c5f42d 3294 Safefree(PL_inplace);
c030f24b
GH
3295#if defined(__CYGWIN__) /* do backup extension automagically */
3296 if (*(s+1) == '\0') {
c86a4f2e 3297 PL_inplace = savepvs(".bak");
c030f24b
GH
3298 return s+1;
3299 }
3300#endif /* __CYGWIN__ */
5ef5d758 3301 {
d4c19fe8 3302 const char * const start = ++s;
5ef5d758
NC
3303 while (*s && !isSPACE(*s))
3304 ++s;
3305
3306 PL_inplace = savepvn(start, s - start);
3307 }
7b8d334a 3308 if (*s) {
5ef5d758 3309 ++s;
7b8d334a 3310 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3311 s++;
7b8d334a 3312 }
fb73857a 3313 return s;
4e49a025 3314 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3315 forbid_setid('I', FALSE);
fb73857a
PP
3316 ++s;
3317 while (*s && isSPACE(*s))
3318 ++s;
3319 if (*s) {
c7030b81 3320 const char *e, *p;
0df16ed7
GS
3321 p = s;
3322 /* ignore trailing spaces (possibly followed by other switches) */
3323 do {
3324 for (e = p; *e && !isSPACE(*e); e++) ;
3325 p = e;
3326 while (isSPACE(*p))
3327 p++;
3328 } while (*p && *p != '-');
55b4bc1c 3329 incpush(s, e-s,
e28f3139 3330 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3331 s = p;
3332 if (*s == '-')
3333 s++;
79072805
LW
3334 }
3335 else
a67e862a 3336 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3337 return s;
79072805 3338 case 'l':
3280af22 3339 PL_minus_l = TRUE;
79072805 3340 s++;
7889fe52
NIS
3341 if (PL_ors_sv) {
3342 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3343 PL_ors_sv = NULL;
7889fe52 3344 }
79072805 3345 if (isDIGIT(*s)) {
53305cf1 3346 I32 flags = 0;
a3b680e6 3347 STRLEN numlen;
396482e1 3348 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3349 numlen = 3 + (*s == '0');
3350 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3351 s += numlen;
3352 }
3353 else {
8bfdd7d9 3354 if (RsPARA(PL_rs)) {
396482e1 3355 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3356 }
3357 else {
8bfdd7d9 3358 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3359 }
79072805
LW
3360 }
3361 return s;
1a30305b 3362 case 'M':
f20b2998 3363 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3364 /* FALLTHROUGH */
1a30305b 3365 case 'm':
f20b2998 3366 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3367 if (*++s) {
c7030b81 3368 const char *start;
b64cb68c 3369 const char *end;
11343788 3370 SV *sv;
e1ec3a88 3371 const char *use = "use ";
0544e6df 3372 bool colon = FALSE;
a5f75d66 3373 /* -M-foo == 'no foo' */
d0043bd1
NC
3374 /* Leading space on " no " is deliberate, to make both
3375 possibilities the same length. */
3376 if (*s == '-') { use = " no "; ++s; }
3377 sv = newSVpvn(use,4);
a5f75d66 3378 start = s;
1a30305b 3379 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3380 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3381 if( *s++ == ':' ) {
3382 if( *s == ':' )
3383 s++;
3384 else
3385 colon = TRUE;
3386 }
3387 }
3388 if (s == start)
3389 Perl_croak(aTHX_ "Module name required with -%c option",
3390 option);
3391 if (colon)
3392 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3393 "contains single ':'",
63da6837 3394 (int)(s - start), start, option);
b64cb68c 3395 end = s + strlen(s);
c07a80fd 3396 if (*s != '=') {
b64cb68c 3397 sv_catpvn(sv, start, end - start);
0544e6df 3398 if (option == 'm') {
c07a80fd 3399 if (*s != '\0')
cea2e8a9 3400 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3401 sv_catpvs( sv, " ()");
c07a80fd
PP
3402 }
3403 } else {
11343788 3404 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3405 /* Use NUL as q''-delimiter. */
3406 sv_catpvs(sv, " split(/,/,q\0");
3407 ++s;
3408 sv_catpvn(sv, s, end - s);
396482e1 3409 sv_catpvs(sv, "\0)");
c07a80fd 3410 }
b64cb68c 3411 s = end;
29a861e7 3412 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3413 }
3414 else
0544e6df 3415 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3416 return s;
79072805 3417 case 'n':
3280af22 3418 PL_minus_n = TRUE;
79072805
LW
3419 s++;
3420 return s;
3421 case 'p':
3280af22 3422 PL_minus_p = TRUE;
79072805
LW
3423 s++;
3424 return s;
3425 case 's':
f20b2998 3426 forbid_setid('s', FALSE);
3280af22 3427 PL_doswitches = TRUE;
79072805
LW
3428 s++;
3429 return s;
6537fe72 3430 case 't':
27a6968b 3431 case 'T':
dc6d7f5c 3432#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3433 /* silently ignore */
dc6d7f5c 3434#elif defined(NO_TAINT_SUPPORT)
3231f579 3435 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3436 "Cowardly refusing to run with -t or -T flags");
3437#else
3438 if (!TAINTING_get)
27a6968b 3439 TOO_LATE_FOR(*s);
284167a5 3440#endif
6537fe72 3441 s++;
463ee0b2 3442 return s;
79072805 3443 case 'u':
3280af22 3444 PL_do_undump = TRUE;
79072805
LW
3445 s++;
3446 return s;
3447 case 'U':
3280af22 3448 PL_unsafe = TRUE;
79072805
LW
3449 s++;
3450 return s;
3451 case 'v':
c4bc78d9
NC
3452 minus_v();
3453 case 'w':
3454 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3455 PL_dowarn |= G_WARN_ON;
3456 }
3457 s++;
3458 return s;
3459 case 'W':
3460 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3461 if (!specialWARN(PL_compiling.cop_warnings))
3462 PerlMemShared_free(PL_compiling.cop_warnings);
3463 PL_compiling.cop_warnings = pWARN_ALL ;
3464 s++;
3465 return s;
3466 case 'X':
3467 PL_dowarn = G_WARN_ALL_OFF;
3468 if (!specialWARN(PL_compiling.cop_warnings))
3469 PerlMemShared_free(PL_compiling.cop_warnings);
3470 PL_compiling.cop_warnings = pWARN_NONE ;
3471 s++;
3472 return s;
3473 case '*':
3474 case ' ':
3475 while( *s == ' ' )
3476 ++s;
3477 if (s[0] == '-') /* Additional switches on #! line. */
3478 return s+1;
3479 break;
3480 case '-':
34