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CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
352d5a3a
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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
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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
43c0c913
NC
27#ifdef PERL_IS_MINIPERL
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
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39#endif
40
2982a345
NC
41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
ae60cb46
NC
45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
50# ifdef I_SYSUIO
51# include <sys/uio.h>
52# endif
53
54union control_un {
55 struct cmsghdr cm;
56 char control[CMSG_SPACE(sizeof(int))];
57};
58
2aa47728
NC
59#endif
60
5311654c
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61#ifdef __BEOS__
62# define HZ 1000000
63#endif
64
65#ifndef HZ
66# ifdef CLK_TCK
67# define HZ CLK_TCK
68# else
69# define HZ 60
70# endif
71#endif
72
7114a2d2 73#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 74char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
75#endif
76
acfe0abc 77static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 78
cc69b689 79#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
ec2019ad 80/* Drop everything. Heck, don't even try to call it */
cc69b689
NC
81# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) NOOP
82#else
ec2019ad 83/* Drop almost everything */
cc69b689 84# define validate_suid(validarg, scriptname, fdscript, suidscript, linestr_sv, rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 85#endif
8d063cd8 86
d6f07c05
AL
87#define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
139d0ce6 89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
90 if (PL_op) \
91 CALLRUNOPS(aTHX);
92
93#define CALL_LIST_BODY(cv) \
94 PUSHMARK(PL_stack_sp); \
9a8aa25b 95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 96
e6827a76 97static void
daa7d858 98S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 99{
27da23d5 100 dVAR;
e6827a76
NC
101 if (!PL_curinterp) {
102 PERL_SET_INTERP(my_perl);
3db8f154 103#if defined(USE_ITHREADS)
e6827a76
NC
104 INIT_THREADS;
105 ALLOC_THREAD_KEY;
106 PERL_SET_THX(my_perl);
107 OP_REFCNT_INIT;
e8570548 108 OP_CHECK_MUTEX_INIT;
71ad1b0c 109 HINTS_REFCNT_INIT;
e6827a76 110 MUTEX_INIT(&PL_dollarzero_mutex);
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111 MUTEX_INIT(&PL_my_ctx_mutex);
112# endif
e6827a76 113 }
c0bce9aa
NC
114#if defined(USE_ITHREADS)
115 else
116#else
117 /* This always happens for non-ithreads */
118#endif
119 {
e6827a76
NC
120 PERL_SET_THX(my_perl);
121 }
122}
06d86050 123
cbec8ebe
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124
125/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
126
127void
128Perl_sys_init(int* argc, char*** argv)
129{
4fc0badb 130 dVAR;
7918f24d
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131
132 PERL_ARGS_ASSERT_SYS_INIT;
133
cbec8ebe
DM
134 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
135 PERL_UNUSED_ARG(argv);
136 PERL_SYS_INIT_BODY(argc, argv);
137}
138
139void
140Perl_sys_init3(int* argc, char*** argv, char*** env)
141{
4fc0badb 142 dVAR;
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143
144 PERL_ARGS_ASSERT_SYS_INIT3;
145
cbec8ebe
DM
146 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
147 PERL_UNUSED_ARG(argv);
148 PERL_UNUSED_ARG(env);
149 PERL_SYS_INIT3_BODY(argc, argv, env);
150}
151
152void
d0820ef1 153Perl_sys_term()
cbec8ebe 154{
4fc0badb 155 dVAR;
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DM
156 if (!PL_veto_cleanup) {
157 PERL_SYS_TERM_BODY();
158 }
cbec8ebe
DM
159}
160
161
32e30700
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162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
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164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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GS
166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
7918f24d
NC
171
172 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
173
9f653bb5 174 /* Newx() needs interpreter, so call malloc() instead */
32e30700 175 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 176 S_init_tls_and_interp(my_perl);
32e30700
GS
177 Zero(my_perl, 1, PerlInterpreter);
178 PL_Mem = ipM;
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179 PL_MemShared = ipMS;
180 PL_MemParse = ipMP;
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181 PL_Env = ipE;
182 PL_StdIO = ipStd;
183 PL_LIO = ipLIO;
184 PL_Dir = ipD;
185 PL_Sock = ipS;
186 PL_Proc = ipP;
7cb608b5 187 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 188
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189 return my_perl;
190}
191#else
954c1994
GS
192
193/*
ccfc67b7
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194=head1 Embedding Functions
195
954c1994
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196=for apidoc perl_alloc
197
198Allocates a new Perl interpreter. See L<perlembed>.
199
200=cut
201*/
202
93a17b20 203PerlInterpreter *
cea2e8a9 204perl_alloc(void)
79072805 205{
cea2e8a9 206 PerlInterpreter *my_perl;
79072805 207
9f653bb5 208 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 209 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 210
e6827a76 211 S_init_tls_and_interp(my_perl);
7cb608b5 212#ifndef PERL_TRACK_MEMPOOL
07409e01 213 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
214#else
215 Zero(my_perl, 1, PerlInterpreter);
216 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
217 return my_perl;
218#endif
79072805 219}
32e30700 220#endif /* PERL_IMPLICIT_SYS */
79072805 221
954c1994
GS
222/*
223=for apidoc perl_construct
224
225Initializes a new Perl interpreter. See L<perlembed>.
226
227=cut
228*/
229
79072805 230void
0cb96387 231perl_construct(pTHXx)
79072805 232{
27da23d5 233 dVAR;
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NC
234
235 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
236
8990e307 237#ifdef MULTIPLICITY
54aff467 238 init_interp();
ac27b0f5 239 PL_perl_destruct_level = 1;
54aff467 240#else
7918f24d 241 PERL_UNUSED_ARG(my_perl);
54aff467
GS
242 if (PL_perl_destruct_level > 0)
243 init_interp();
244#endif
34caed6d
DM
245 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
246
34caed6d
DM
247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
252
253 sv_setpv(&PL_sv_no,PL_No);
254 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
255 of caching the numeric forms. However, as &PL_sv_no doesn't contain
256 a string that is a valid numer, we have to turn the public flags by
257 hand: */
34caed6d 258 SvNV(&PL_sv_no);
c1939273 259 SvIV(&PL_sv_no);
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NC
260 SvIOK_on(&PL_sv_no);
261 SvNOK_on(&PL_sv_no);
34caed6d
DM
262 SvREADONLY_on(&PL_sv_no);
263 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
264
265 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 266 SvNV(&PL_sv_yes);
c1939273 267 SvIV(&PL_sv_yes);
34caed6d
DM
268 SvREADONLY_on(&PL_sv_yes);
269 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
270
271 SvREADONLY_on(&PL_sv_placeholder);
272 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
273
274 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 275#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 276 PL_pidstatus = newHV();
ca0c25f6 277#endif
79072805 278
396482e1 279 PL_rs = newSVpvs("\n");
dc92893f 280
cea2e8a9 281 init_stacks();
79072805 282
748a9306 283 init_ids();
a5f75d66 284
312caa8e 285 JMPENV_BOOTSTRAP;
f86702cc
PP
286 STATUS_ALL_SUCCESS;
287
0672f40e 288 init_i18nl10n(1);
36477c24 289 SET_NUMERIC_STANDARD();
0b5b802d 290
ab821d7f 291#if defined(LOCAL_PATCH_COUNT)
3280af22 292 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
293#endif
294
52853b95
GS
295#ifdef HAVE_INTERP_INTERN
296 sys_intern_init();
297#endif
298
3a1ee7e8 299 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 300
3280af22
NIS
301 PL_fdpid = newAV(); /* for remembering popen pids by fd */
302 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 303 PL_errors = newSVpvs("");
76f68e9b
MHM
304 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
305 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
306 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 307#ifdef USE_ITHREADS
402d2eb1
NC
308 /* First entry is a list of empty elements. It needs to be initialised
309 else all hell breaks loose in S_find_uninit_var(). */
310 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 311 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 312#endif
e5dd39fc 313#ifdef USE_REENTRANT_API
59bd0823 314 Perl_reentrant_init(aTHX);
e5dd39fc 315#endif
3d47000e
AB
316
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
320 PL_strtab = newHV();
321
3d47000e
AB
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
324
0631ea03
AB
325#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
328#endif /* environ */
329
2f42fcb0
JH
330#ifndef PERL_MICRO
331# ifdef USE_ENVIRON_ARRAY
0631ea03 332 PL_origenviron = environ;
2f42fcb0 333# endif
0631ea03
AB
334#endif
335
5311654c 336 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 337 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
dbc1d986 341#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
344#endif
345 PL_clocktick = HZ;
346
081fc587
AB
347 PL_stashcache = newHV();
348
e8e3635e 349 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 350 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 351
27da23d5
JH
352#ifdef HAS_MMAP
353 if (!PL_mmap_page_size) {
354#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 {
356 SETERRNO(0, SS_NORMAL);
357# ifdef _SC_PAGESIZE
358 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359# else
360 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361# endif
362 if ((long) PL_mmap_page_size < 0) {
363 if (errno) {
44f8325f 364 SV * const error = ERRSV;
d4c19fe8 365 SvUPGRADE(error, SVt_PV);
0510663f 366 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
367 }
368 else
369 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
370 }
371 }
372#else
373# ifdef HAS_GETPAGESIZE
374 PL_mmap_page_size = getpagesize();
375# else
376# if defined(I_SYS_PARAM) && defined(PAGESIZE)
377 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
378# endif
379# endif
380#endif
381 if (PL_mmap_page_size <= 0)
382 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
383 (IV) PL_mmap_page_size);
384 }
385#endif /* HAS_MMAP */
386
387#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
388 PL_timesbase.tms_utime = 0;
389 PL_timesbase.tms_stime = 0;
390 PL_timesbase.tms_cutime = 0;
391 PL_timesbase.tms_cstime = 0;
392#endif
393
7d113631
NC
394 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
395
a3e6e81e 396 PL_registered_mros = newHV();
9e169432
NC
397 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
398 HvMAX(PL_registered_mros) = 0;
a3e6e81e 399
8990e307 400 ENTER;
79072805
LW
401}
402
954c1994 403/*
62375a60
NIS
404=for apidoc nothreadhook
405
406Stub that provides thread hook for perl_destruct when there are
407no threads.
408
409=cut
410*/
411
412int
4e9e3734 413Perl_nothreadhook(pTHX)
62375a60 414{
96a5add6 415 PERL_UNUSED_CONTEXT;
62375a60
NIS
416 return 0;
417}
418
41e4abd8
NC
419#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
420void
421Perl_dump_sv_child(pTHX_ SV *sv)
422{
423 ssize_t got;
bf357333
NC
424 const int sock = PL_dumper_fd;
425 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
426 union control_un control;
427 struct msghdr msg;
808ad2d0 428 struct iovec vec[2];
bf357333 429 struct cmsghdr *cmptr;
808ad2d0
NC
430 int returned_errno;
431 unsigned char buffer[256];
41e4abd8 432
7918f24d
NC
433 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
434
bf357333 435 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
436 return;
437
438 PerlIO_flush(Perl_debug_log);
439
bf357333
NC
440 /* All these shenanigans are to pass a file descriptor over to our child for
441 it to dump out to. We can't let it hold open the file descriptor when it
442 forks, as the file descriptor it will dump to can turn out to be one end
443 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 444 be open, the wait would be forever.) */
bf357333
NC
445
446 msg.msg_control = control.control;
447 msg.msg_controllen = sizeof(control.control);
448 /* We're a connected socket so we don't need a destination */
449 msg.msg_name = NULL;
450 msg.msg_namelen = 0;
451 msg.msg_iov = vec;
808ad2d0 452 msg.msg_iovlen = 1;
bf357333
NC
453
454 cmptr = CMSG_FIRSTHDR(&msg);
455 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
456 cmptr->cmsg_level = SOL_SOCKET;
457 cmptr->cmsg_type = SCM_RIGHTS;
458 *((int *)CMSG_DATA(cmptr)) = 1;
459
460 vec[0].iov_base = (void*)&sv;
461 vec[0].iov_len = sizeof(sv);
462 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
463
464 if(got < 0) {
bf357333 465 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
466 abort();
467 }
bf357333
NC
468 if(got < sizeof(sv)) {
469 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 /* Return protocol is
474 int: errno value
475 unsigned char: length of location string (0 for empty)
476 unsigned char*: string (not terminated)
477 */
478 vec[0].iov_base = (void*)&returned_errno;
479 vec[0].iov_len = sizeof(returned_errno);
480 vec[1].iov_base = buffer;
481 vec[1].iov_len = 1;
482
483 got = readv(sock, vec, 2);
41e4abd8
NC
484
485 if(got < 0) {
486 perror("Debug leaking scalars parent read failed");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
808ad2d0 490 if(got < sizeof(returned_errno) + 1) {
41e4abd8 491 perror("Debug leaking scalars parent short read");
808ad2d0 492 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
493 abort();
494 }
495
808ad2d0
NC
496 if (*buffer) {
497 got = read(sock, buffer + 1, *buffer);
498 if(got < 0) {
499 perror("Debug leaking scalars parent read 2 failed");
500 PerlIO_flush(PerlIO_stderr());
501 abort();
502 }
503
504 if(got < *buffer) {
505 perror("Debug leaking scalars parent short read 2");
506 PerlIO_flush(PerlIO_stderr());
507 abort();
508 }
509 }
510
511 if (returned_errno || *buffer) {
512 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
513 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
514 returned_errno, strerror(returned_errno));
41e4abd8
NC
515 }
516}
517#endif
518
62375a60 519/*
954c1994
GS
520=for apidoc perl_destruct
521
522Shuts down a Perl interpreter. See L<perlembed>.
523
524=cut
525*/
526
31d77e54 527int
0cb96387 528perl_destruct(pTHXx)
79072805 529{
27da23d5 530 dVAR;
be2ea8ed 531 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 532 HV *hv;
2aa47728 533#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
534 pid_t child;
535#endif
8990e307 536
7918f24d
NC
537 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538#ifndef MULTIPLICITY
ed6c66dd 539 PERL_UNUSED_ARG(my_perl);
7918f24d 540#endif
9d4ba2ae 541
3d22c4f0
GG
542 assert(PL_scopestack_ix == 1);
543
7766f137
GS
544 /* wait for all pseudo-forked children to finish */
545 PERL_WAIT_FOR_CHILDREN;
546
3280af22 547 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
548#ifdef DEBUGGING
549 {
9d4ba2ae
AL
550 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
551 if (s) {
e1ec3a88 552 const int i = atoi(s);
5f05dabc
PP
553 if (destruct_level < i)
554 destruct_level = i;
555 }
4633a7c4
LW
556 }
557#endif
558
27da23d5 559 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
560 dJMPENV;
561 int x = 0;
562
563 JMPENV_PUSH(x);
1b6737cc 564 PERL_UNUSED_VAR(x);
9ebf26ad 565 if (PL_endav && !PL_minus_c) {
ca7b837b 566 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 567 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 568 }
f3faeb53 569 JMPENV_POP;
26f423df 570 }
f3faeb53 571 LEAVE;
a0d0e21e 572 FREETMPS;
3d22c4f0 573 assert(PL_scopestack_ix == 0);
a0d0e21e 574
e00b64d4 575 /* Need to flush since END blocks can produce output */
f13a2bc0 576 my_fflush_all();
e00b64d4 577
16c91539 578 if (PL_threadhook(aTHX)) {
62375a60 579 /* Threads hook has vetoed further cleanup */
c301d606 580 PL_veto_cleanup = TRUE;
37038d91 581 return STATUS_EXIT;
62375a60
NIS
582 }
583
2aa47728
NC
584#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
585 if (destruct_level != 0) {
586 /* Fork here to create a child. Our child's job is to preserve the
587 state of scalars prior to destruction, so that we can instruct it
588 to dump any scalars that we later find have leaked.
589 There's no subtlety in this code - it assumes POSIX, and it doesn't
590 fail gracefully */
591 int fd[2];
592
593 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
594 perror("Debug leaking scalars socketpair failed");
595 abort();
596 }
597
598 child = fork();
599 if(child == -1) {
600 perror("Debug leaking scalars fork failed");
601 abort();
602 }
603 if (!child) {
604 /* We are the child */
3125a5a4
NC
605 const int sock = fd[1];
606 const int debug_fd = PerlIO_fileno(Perl_debug_log);
607 int f;
808ad2d0
NC
608 const char *where;
609 /* Our success message is an integer 0, and a char 0 */
b61433a9 610 static const char success[sizeof(int) + 1] = {0};
3125a5a4 611
2aa47728 612 close(fd[0]);
2aa47728 613
3125a5a4
NC
614 /* We need to close all other file descriptors otherwise we end up
615 with interesting hangs, where the parent closes its end of a
616 pipe, and sits waiting for (another) child to terminate. Only
617 that child never terminates, because it never gets EOF, because
bf357333
NC
618 we also have the far end of the pipe open. We even need to
619 close the debugging fd, because sometimes it happens to be one
620 end of a pipe, and a process is waiting on the other end for
621 EOF. Normally it would be closed at some point earlier in
622 destruction, but if we happen to cause the pipe to remain open,
623 EOF never occurs, and we get an infinite hang. Hence all the
624 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
625
626 f = sysconf(_SC_OPEN_MAX);
627 if(f < 0) {
808ad2d0
NC
628 where = "sysconf failed";
629 goto abort;
3125a5a4
NC
630 }
631 while (f--) {
632 if (f == sock)
633 continue;
3125a5a4
NC
634 close(f);
635 }
636
2aa47728
NC
637 while (1) {
638 SV *target;
bf357333
NC
639 union control_un control;
640 struct msghdr msg;
641 struct iovec vec[1];
642 struct cmsghdr *cmptr;
643 ssize_t got;
644 int got_fd;
645
646 msg.msg_control = control.control;
647 msg.msg_controllen = sizeof(control.control);
648 /* We're a connected socket so we don't need a source */
649 msg.msg_name = NULL;
650 msg.msg_namelen = 0;
651 msg.msg_iov = vec;
652 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
653
654 vec[0].iov_base = (void*)&target;
655 vec[0].iov_len = sizeof(target);
656
657 got = recvmsg(sock, &msg, 0);
2aa47728
NC
658
659 if(got == 0)
660 break;
661 if(got < 0) {
808ad2d0
NC
662 where = "recv failed";
663 goto abort;
2aa47728
NC
664 }
665 if(got < sizeof(target)) {
808ad2d0
NC
666 where = "short recv";
667 goto abort;
2aa47728 668 }
bf357333 669
808ad2d0
NC
670 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
671 where = "no cmsg";
672 goto abort;
673 }
674 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
675 where = "wrong cmsg_len";
676 goto abort;
677 }
678 if(cmptr->cmsg_level != SOL_SOCKET) {
679 where = "wrong cmsg_level";
680 goto abort;
681 }
682 if(cmptr->cmsg_type != SCM_RIGHTS) {
683 where = "wrong cmsg_type";
684 goto abort;
685 }
bf357333
NC
686
687 got_fd = *(int*)CMSG_DATA(cmptr);
688 /* For our last little bit of trickery, put the file descriptor
689 back into Perl_debug_log, as if we never actually closed it
690 */
808ad2d0
NC
691 if(got_fd != debug_fd) {
692 if (dup2(got_fd, debug_fd) == -1) {
693 where = "dup2";
694 goto abort;
695 }
696 }
2aa47728 697 sv_dump(target);
bf357333 698
2aa47728
NC
699 PerlIO_flush(Perl_debug_log);
700
808ad2d0 701 got = write(sock, &success, sizeof(success));
2aa47728
NC
702
703 if(got < 0) {
808ad2d0
NC
704 where = "write failed";
705 goto abort;
2aa47728 706 }
808ad2d0
NC
707 if(got < sizeof(success)) {
708 where = "short write";
709 goto abort;
2aa47728
NC
710 }
711 }
712 _exit(0);
808ad2d0
NC
713 abort:
714 {
715 int send_errno = errno;
716 unsigned char length = (unsigned char) strlen(where);
717 struct iovec failure[3] = {
718 {(void*)&send_errno, sizeof(send_errno)},
719 {&length, 1},
720 {(void*)where, length}
721 };
722 int got = writev(sock, failure, 3);
723 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
724 in the parent if we try to read from the socketpair after the
725 child has exited, even if there was data to read.
726 So sleep a bit to give the parent a fighting chance of
727 reading the data. */
728 sleep(2);
729 _exit((got == -1) ? errno : 0);
730 }
bf357333 731 /* End of child. */
2aa47728 732 }
41e4abd8 733 PL_dumper_fd = fd[0];
2aa47728
NC
734 close(fd[1]);
735 }
736#endif
737
ff0cee69
PP
738 /* We must account for everything. */
739
740 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
741 /* Do this now, because destroying ops can cause new SVs to be generated
742 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
743 PL_curcop to point to a valid op from which the filename structure
744 member is copied. */
745 PL_curcop = &PL_compiling;
3280af22 746 if (PL_main_root) {
4e380990
DM
747 /* ensure comppad/curpad to refer to main's pad */
748 if (CvPADLIST(PL_main_cv)) {
749 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
750 }
3280af22 751 op_free(PL_main_root);
5f66b61c 752 PL_main_root = NULL;
a0d0e21e 753 }
5f66b61c 754 PL_main_start = NULL;
aac9d523
DM
755 /* note that PL_main_cv isn't usually actually freed at this point,
756 * due to the CvOUTSIDE refs from subs compiled within it. It will
757 * get freed once all the subs are freed in sv_clean_all(), for
758 * destruct_level > 0 */
3280af22 759 SvREFCNT_dec(PL_main_cv);
601f1833 760 PL_main_cv = NULL;
ca7b837b 761 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 762
13621cfb
NIS
763 /* Tell PerlIO we are about to tear things apart in case
764 we have layers which are using resources that should
765 be cleaned up now.
766 */
767
768 PerlIO_destruct(aTHX);
769
3280af22 770 if (PL_sv_objcount) {
a0d0e21e
LW
771 /*
772 * Try to destruct global references. We do this first so that the
773 * destructors and destructees still exist. Some sv's might remain.
774 * Non-referenced objects are on their own.
775 */
a0d0e21e 776 sv_clean_objs();
bf9cdc68 777 PL_sv_objcount = 0;
8990e307
LW
778 }
779
5cd24f17 780 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 781 SvREFCNT_dec(PL_warnhook);
a0714e2c 782 PL_warnhook = NULL;
3280af22 783 SvREFCNT_dec(PL_diehook);
a0714e2c 784 PL_diehook = NULL;
5cd24f17 785
4b556e6c 786 /* call exit list functions */
3280af22 787 while (PL_exitlistlen-- > 0)
acfe0abc 788 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 789
3280af22 790 Safefree(PL_exitlist);
4b556e6c 791
1c4916e5
CB
792 PL_exitlist = NULL;
793 PL_exitlistlen = 0;
794
a3e6e81e
NC
795 SvREFCNT_dec(PL_registered_mros);
796
551a8b83 797 /* jettison our possibly duplicated environment */
4b647fb0
DM
798 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
799 * so we certainly shouldn't free it here
800 */
2f42fcb0 801#ifndef PERL_MICRO
4b647fb0 802#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 803 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
804#ifdef USE_ITHREADS
805 /* only main thread can free environ[0] contents */
806 && PL_curinterp == aTHX
807#endif
808 )
809 {
551a8b83
JH
810 I32 i;
811
812 for (i = 0; environ[i]; i++)
4b420006 813 safesysfree(environ[i]);
0631ea03 814
4b420006
JH
815 /* Must use safesysfree() when working with environ. */
816 safesysfree(environ);
551a8b83
JH
817
818 environ = PL_origenviron;
819 }
820#endif
2f42fcb0 821#endif /* !PERL_MICRO */
551a8b83 822
30985c42
JH
823 if (destruct_level == 0) {
824
825 DEBUG_P(debprofdump());
826
827#if defined(PERLIO_LAYERS)
828 /* No more IO - including error messages ! */
829 PerlIO_cleanup(aTHX);
830#endif
831
832 CopFILE_free(&PL_compiling);
833 CopSTASH_free(&PL_compiling);
834
835 /* The exit() function will do everything that needs doing. */
836 return STATUS_EXIT;
837 }
838
5f8cb046
DM
839#ifdef USE_ITHREADS
840 /* the syntax tree is shared between clones
841 * so op_free(PL_main_root) only ReREFCNT_dec's
842 * REGEXPs in the parent interpreter
843 * we need to manually ReREFCNT_dec for the clones
844 */
5f8cb046 845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM
847 PL_regex_pad = NULL;
848#endif
849
ad64d0ec 850 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
851 PL_stashcache = NULL;
852
5f05dabc
PP
853 /* loosen bonds of global variables */
854
2f9285f8
DM
855 /* XXX can PL_parser still be non-null here? */
856 if(PL_parser && PL_parser->rsfp) {
857 (void)PerlIO_close(PL_parser->rsfp);
858 PL_parser->rsfp = NULL;
8ebc5c01
PP
859 }
860
84386e14
RGS
861 if (PL_minus_F) {
862 Safefree(PL_splitstr);
863 PL_splitstr = NULL;
864 }
865
8ebc5c01 866 /* switches */
3280af22
NIS
867 PL_minus_n = FALSE;
868 PL_minus_p = FALSE;
869 PL_minus_l = FALSE;
870 PL_minus_a = FALSE;
871 PL_minus_F = FALSE;
872 PL_doswitches = FALSE;
599cee73 873 PL_dowarn = G_WARN_OFF;
3280af22 874 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
875 PL_unsafe = FALSE;
876
877 Safefree(PL_inplace);
bd61b366 878 PL_inplace = NULL;
a7cb1f99 879 SvREFCNT_dec(PL_patchlevel);
1e8125c6 880 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
881
882 if (PL_e_script) {
883 SvREFCNT_dec(PL_e_script);
a0714e2c 884 PL_e_script = NULL;
8ebc5c01
PP
885 }
886
bf9cdc68
RG
887 PL_perldb = 0;
888
8ebc5c01
PP
889 /* magical thingies */
890
e23d9e2f
CS
891 SvREFCNT_dec(PL_ofsgv); /* *, */
892 PL_ofsgv = NULL;
5f05dabc 893
7889fe52 894 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 895 PL_ors_sv = NULL;
8ebc5c01 896
3280af22 897 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 898 PL_rs = NULL;
dc92893f 899
d33b2eba 900 Safefree(PL_osname); /* $^O */
bd61b366 901 PL_osname = NULL;
5f05dabc 902
3280af22 903 SvREFCNT_dec(PL_statname);
a0714e2c
SS
904 PL_statname = NULL;
905 PL_statgv = NULL;
5f05dabc 906
8ebc5c01
PP
907 /* defgv, aka *_ should be taken care of elsewhere */
908
7d5ea4e7
GS
909 /* float buffer */
910 Safefree(PL_efloatbuf);
bd61b366 911 PL_efloatbuf = NULL;
7d5ea4e7
GS
912 PL_efloatsize = 0;
913
8ebc5c01 914 /* startup and shutdown function lists */
3280af22 915 SvREFCNT_dec(PL_beginav);
5a837c8f 916 SvREFCNT_dec(PL_beginav_save);
3280af22 917 SvREFCNT_dec(PL_endav);
7d30b5c4 918 SvREFCNT_dec(PL_checkav);
ece599bd 919 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
920 SvREFCNT_dec(PL_unitcheckav);
921 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 922 SvREFCNT_dec(PL_initav);
7d49f689
NC
923 PL_beginav = NULL;
924 PL_beginav_save = NULL;
925 PL_endav = NULL;
926 PL_checkav = NULL;
927 PL_checkav_save = NULL;
3c10abe3
AG
928 PL_unitcheckav = NULL;
929 PL_unitcheckav_save = NULL;
7d49f689 930 PL_initav = NULL;
5618dfe8 931
8ebc5c01 932 /* shortcuts just get cleared */
a0714e2c
SS
933 PL_envgv = NULL;
934 PL_incgv = NULL;
935 PL_hintgv = NULL;
936 PL_errgv = NULL;
937 PL_argvgv = NULL;
938 PL_argvoutgv = NULL;
939 PL_stdingv = NULL;
940 PL_stderrgv = NULL;
941 PL_last_in_gv = NULL;
942 PL_replgv = NULL;
943 PL_DBgv = NULL;
944 PL_DBline = NULL;
945 PL_DBsub = NULL;
946 PL_DBsingle = NULL;
947 PL_DBtrace = NULL;
948 PL_DBsignal = NULL;
601f1833 949 PL_DBcv = NULL;
7d49f689 950 PL_dbargs = NULL;
5c284bb0 951 PL_debstash = NULL;
8ebc5c01 952
7a1c5554 953 SvREFCNT_dec(PL_argvout_stack);
7d49f689 954 PL_argvout_stack = NULL;
8ebc5c01 955
5c831c24 956 SvREFCNT_dec(PL_modglobal);
5c284bb0 957 PL_modglobal = NULL;
5c831c24 958 SvREFCNT_dec(PL_preambleav);
7d49f689 959 PL_preambleav = NULL;
5c831c24 960 SvREFCNT_dec(PL_subname);
a0714e2c 961 PL_subname = NULL;
ca0c25f6 962#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 963 SvREFCNT_dec(PL_pidstatus);
5c284bb0 964 PL_pidstatus = NULL;
ca0c25f6 965#endif
5c831c24 966 SvREFCNT_dec(PL_toptarget);
a0714e2c 967 PL_toptarget = NULL;
5c831c24 968 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
969 PL_bodytarget = NULL;
970 PL_formtarget = NULL;
5c831c24 971
d33b2eba 972 /* free locale stuff */
b9582b6a 973#ifdef USE_LOCALE_COLLATE
d33b2eba 974 Safefree(PL_collation_name);
bd61b366 975 PL_collation_name = NULL;
b9582b6a 976#endif
d33b2eba 977
b9582b6a 978#ifdef USE_LOCALE_NUMERIC
d33b2eba 979 Safefree(PL_numeric_name);
bd61b366 980 PL_numeric_name = NULL;
a453c169 981 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 982 PL_numeric_radix_sv = NULL;
b9582b6a 983#endif
d33b2eba 984
5c831c24
GS
985 /* clear utf8 character classes */
986 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
987 SvREFCNT_dec(PL_utf8_alpha);
988 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
989 SvREFCNT_dec(PL_utf8_graph);
990 SvREFCNT_dec(PL_utf8_digit);
991 SvREFCNT_dec(PL_utf8_upper);
992 SvREFCNT_dec(PL_utf8_lower);
993 SvREFCNT_dec(PL_utf8_print);
994 SvREFCNT_dec(PL_utf8_punct);
995 SvREFCNT_dec(PL_utf8_xdigit);
996 SvREFCNT_dec(PL_utf8_mark);
997 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 998 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 999 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1000 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1001 SvREFCNT_dec(PL_utf8_idstart);
1002 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1003 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1004 PL_utf8_alnum = NULL;
a0714e2c
SS
1005 PL_utf8_alpha = NULL;
1006 PL_utf8_space = NULL;
a0714e2c
SS
1007 PL_utf8_graph = NULL;
1008 PL_utf8_digit = NULL;
1009 PL_utf8_upper = NULL;
1010 PL_utf8_lower = NULL;
1011 PL_utf8_print = NULL;
1012 PL_utf8_punct = NULL;
1013 PL_utf8_xdigit = NULL;
1014 PL_utf8_mark = NULL;
1015 PL_utf8_toupper = NULL;
1016 PL_utf8_totitle = NULL;
1017 PL_utf8_tolower = NULL;
1018 PL_utf8_tofold = NULL;
1019 PL_utf8_idstart = NULL;
1020 PL_utf8_idcont = NULL;
2726813d 1021 PL_utf8_foldclosures = NULL;
5c831c24 1022
971a9dd3 1023 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1024 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1025 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1026 cophh_free(CopHINTHASH_get(&PL_compiling));
1027 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1028 CopFILE_free(&PL_compiling);
1029 CopSTASH_free(&PL_compiling);
5c831c24 1030
a0d0e21e 1031 /* Prepare to destruct main symbol table. */
5f05dabc 1032
3280af22 1033 hv = PL_defstash;
ca556bcd
DM
1034 /* break ref loop *:: <=> %:: */
1035 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1036 PL_defstash = 0;
a0d0e21e 1037 SvREFCNT_dec(hv);
5c831c24 1038 SvREFCNT_dec(PL_curstname);
a0714e2c 1039 PL_curstname = NULL;
a0d0e21e 1040
5a844595
GS
1041 /* clear queued errors */
1042 SvREFCNT_dec(PL_errors);
a0714e2c 1043 PL_errors = NULL;
5a844595 1044
dd69841b
BB
1045 SvREFCNT_dec(PL_isarev);
1046
a0d0e21e 1047 FREETMPS;
9b387841 1048 if (destruct_level >= 2) {
3280af22 1049 if (PL_scopestack_ix != 0)
9b387841
NC
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1051 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1052 (long)PL_scopestack_ix);
3280af22 1053 if (PL_savestack_ix != 0)
9b387841
NC
1054 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1055 "Unbalanced saves: %ld more saves than restores\n",
1056 (long)PL_savestack_ix);
3280af22 1057 if (PL_tmps_floor != -1)
9b387841
NC
1058 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1059 (long)PL_tmps_floor + 1);
a0d0e21e 1060 if (cxstack_ix != -1)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1062 (long)cxstack_ix + 1);
a0d0e21e 1063 }
8990e307 1064
776df701 1065#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1066 /* the entries in this list are allocated via SV PVX's, so get freed
1067 * in sv_clean_all */
1068 Safefree(PL_my_cxt_list);
776df701 1069#endif
57bb2458 1070
8990e307 1071 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1072
1073 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1074 while (sv_clean_all() > 2)
5226ed68
JH
1075 ;
1076
d4777f27
GS
1077 AvREAL_off(PL_fdpid); /* no surviving entries */
1078 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1079 PL_fdpid = NULL;
d33b2eba 1080
6c644e78
GS
1081#ifdef HAVE_INTERP_INTERN
1082 sys_intern_clear();
1083#endif
1084
6e72f9df
PP
1085 /* Destruct the global string table. */
1086 {
1087 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1088 * so that sv_free() won't fail on them.
80459961
NC
1089 * Now that the global string table is using a single hunk of memory
1090 * for both HE and HEK, we either need to explicitly unshare it the
1091 * correct way, or actually free things here.
6e72f9df 1092 */
80459961
NC
1093 I32 riter = 0;
1094 const I32 max = HvMAX(PL_strtab);
c4420975 1095 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1096 HE *hent = array[0];
1097
6e72f9df 1098 for (;;) {
0453d815 1099 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1100 HE * const next = HeNEXT(hent);
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1102 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1103 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1104 Safefree(hent);
1105 hent = next;
6e72f9df
PP
1106 }
1107 if (!hent) {
1108 if (++riter > max)
1109 break;
1110 hent = array[riter];
1111 }
1112 }
80459961
NC
1113
1114 Safefree(array);
1115 HvARRAY(PL_strtab) = 0;
1116 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1117 }
3280af22 1118 SvREFCNT_dec(PL_strtab);
6e72f9df 1119
e652bb2f 1120#ifdef USE_ITHREADS
c21d1a0f 1121 /* free the pointer tables used for cloning */
a0739874 1122 ptr_table_free(PL_ptr_table);
bf9cdc68 1123 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1124#endif
a0739874 1125
d33b2eba
GS
1126 /* free special SVs */
1127
1128 SvREFCNT(&PL_sv_yes) = 0;
1129 sv_clear(&PL_sv_yes);
1130 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1131 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1132
1133 SvREFCNT(&PL_sv_no) = 0;
1134 sv_clear(&PL_sv_no);
1135 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1136 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1137
9f375a43
DM
1138 {
1139 int i;
1140 for (i=0; i<=2; i++) {
1141 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1142 sv_clear(PERL_DEBUG_PAD(i));
1143 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1144 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1145 }
1146 }
1147
0453d815 1148 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1149 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1150
eba0f806
DM
1151#ifdef DEBUG_LEAKING_SCALARS
1152 if (PL_sv_count != 0) {
1153 SV* sva;
1154 SV* sv;
1155 register SV* svend;
1156
ad64d0ec 1157 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1158 svend = &sva[SvREFCNT(sva)];
1159 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1160 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1161 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1162 " flags=0x%"UVxf
fd0854ff 1163 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1164 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1165 "serial %"UVuf"\n",
574b8821
NC
1166 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1167 pTHX__VALUE,
fd0854ff
DM
1168 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1169 sv->sv_debug_line,
1170 sv->sv_debug_inpad ? "for" : "by",
1171 sv->sv_debug_optype ?
1172 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1173 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1174 sv->sv_debug_serial
fd0854ff 1175 );
2aa47728 1176#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1177 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1178#endif
eba0f806
DM
1179 }
1180 }
1181 }
1182 }
2aa47728
NC
1183#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1184 {
1185 int status;
1186 fd_set rset;
1187 /* Wait for up to 4 seconds for child to terminate.
1188 This seems to be the least effort way of timing out on reaping
1189 its exit status. */
1190 struct timeval waitfor = {4, 0};
41e4abd8 1191 int sock = PL_dumper_fd;
2aa47728
NC
1192
1193 shutdown(sock, 1);
1194 FD_ZERO(&rset);
1195 FD_SET(sock, &rset);
1196 select(sock + 1, &rset, NULL, NULL, &waitfor);
1197 waitpid(child, &status, WNOHANG);
1198 close(sock);
1199 }
1200#endif
eba0f806 1201#endif
77abb4c6
NC
1202#ifdef DEBUG_LEAKING_SCALARS_ABORT
1203 if (PL_sv_count)
1204 abort();
1205#endif
bf9cdc68 1206 PL_sv_count = 0;
eba0f806 1207
f1fac472
NC
1208#ifdef PERL_DEBUG_READONLY_OPS
1209 free(PL_slabs);
1210 PL_slabs = NULL;
1211 PL_slab_count = 0;
1212#endif
eba0f806 1213
56a2bab7 1214#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1215 /* No more IO - including error messages ! */
1216 PerlIO_cleanup(aTHX);
1217#endif
1218
9f4bd222 1219 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1220 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1221 for no arg - and will try and SvREFCNT_dec it.
1222 */
1223 SvREFCNT(&PL_sv_undef) = 0;
1224 SvREADONLY_off(&PL_sv_undef);
1225
3280af22 1226 Safefree(PL_origfilename);
bd61b366 1227 PL_origfilename = NULL;
3280af22 1228 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1229 PL_reg_start_tmp = (char**)NULL;
1230 PL_reg_start_tmpl = 0;
43c5f42d 1231 Safefree(PL_reg_curpm);
82ba1be6 1232 Safefree(PL_reg_poscache);
dd28f7bb 1233 free_tied_hv_pool();
3280af22 1234 Safefree(PL_op_mask);
cf36064f 1235 Safefree(PL_psig_name);
bf9cdc68 1236 PL_psig_name = (SV**)NULL;
d525a7b2 1237 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1238 {
1239 /* We need to NULL PL_psig_pend first, so that
1240 signal handlers know not to use it */
1241 int *psig_save = PL_psig_pend;
1242 PL_psig_pend = (int*)NULL;
1243 Safefree(psig_save);
1244 }
a0714e2c 1245 PL_formfeed = NULL;
6e72f9df 1246 nuke_stacks();
bf9cdc68
RG
1247 PL_tainting = FALSE;
1248 PL_taint_warn = FALSE;
3280af22 1249 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1250 PL_debug = 0;
ac27b0f5 1251
a0d0e21e 1252 DEBUG_P(debprofdump());
d33b2eba 1253
e5dd39fc 1254#ifdef USE_REENTRANT_API
10bc17b6 1255 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1256#endif
1257
612f20c3
GS
1258 sv_free_arenas();
1259
5d9a96ca
DM
1260 while (PL_regmatch_slab) {
1261 regmatch_slab *s = PL_regmatch_slab;
1262 PL_regmatch_slab = PL_regmatch_slab->next;
1263 Safefree(s);
1264 }
1265
fc36a67e
PP
1266 /* As the absolutely last thing, free the non-arena SV for mess() */
1267
3280af22 1268 if (PL_mess_sv) {
f350b448
NC
1269 /* we know that type == SVt_PVMG */
1270
9c63abab 1271 /* it could have accumulated taint magic */
f350b448
NC
1272 MAGIC* mg;
1273 MAGIC* moremagic;
1274 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1275 moremagic = mg->mg_moremagic;
1276 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1277 && mg->mg_len >= 0)
1278 Safefree(mg->mg_ptr);
1279 Safefree(mg);
9c63abab 1280 }
f350b448 1281
fc36a67e 1282 /* we know that type >= SVt_PV */
8bd4d4c5 1283 SvPV_free(PL_mess_sv);
3280af22
NIS
1284 Safefree(SvANY(PL_mess_sv));
1285 Safefree(PL_mess_sv);
a0714e2c 1286 PL_mess_sv = NULL;
fc36a67e 1287 }
37038d91 1288 return STATUS_EXIT;
79072805
LW
1289}
1290
954c1994
GS
1291/*
1292=for apidoc perl_free
1293
1294Releases a Perl interpreter. See L<perlembed>.
1295
1296=cut
1297*/
1298
79072805 1299void
0cb96387 1300perl_free(pTHXx)
79072805 1301{
5174512c
NC
1302 dVAR;
1303
7918f24d
NC
1304 PERL_ARGS_ASSERT_PERL_FREE;
1305
c301d606
DM
1306 if (PL_veto_cleanup)
1307 return;
1308
7cb608b5 1309#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1310 {
1311 /*
1312 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1313 * value as we're probably hunting memory leaks then
1314 */
1315 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1316 if (!s || atoi(s) == 0) {
4fd0a9b8 1317 const U32 old_debug = PL_debug;
55ef9aae
MHM
1318 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1319 thread at thread exit. */
4fd0a9b8
NC
1320 if (DEBUG_m_TEST) {
1321 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1322 "free this thread's memory\n");
1323 PL_debug &= ~ DEBUG_m_FLAG;
1324 }
55ef9aae
MHM
1325 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1326 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1327 PL_debug = old_debug;
55ef9aae
MHM
1328 }
1329 }
7cb608b5
NC
1330#endif
1331
acfe0abc 1332#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1333# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1334 {
acfe0abc 1335# ifdef NETWARE
7af12a34 1336 void *host = nw_internal_host;
acfe0abc 1337# else
7af12a34 1338 void *host = w32_internal_host;
acfe0abc 1339# endif
7af12a34 1340 PerlMem_free(aTHXx);
acfe0abc 1341# ifdef NETWARE
7af12a34 1342 nw_delete_internal_host(host);
acfe0abc 1343# else
7af12a34 1344 win32_delete_internal_host(host);
acfe0abc 1345# endif
7af12a34 1346 }
1c0ca838
GS
1347# else
1348 PerlMem_free(aTHXx);
1349# endif
acfe0abc
GS
1350#else
1351 PerlMem_free(aTHXx);
76e3520e 1352#endif
79072805
LW
1353}
1354
b7f7fff6 1355#if defined(USE_ITHREADS)
aebd1ac7
GA
1356/* provide destructors to clean up the thread key when libperl is unloaded */
1357#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1358
826955bd 1359#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1360#pragma fini "perl_fini"
666ad1ec
GA
1361#elif defined(__sun) && !defined(__GNUC__)
1362#pragma fini (perl_fini)
aebd1ac7
GA
1363#endif
1364
0dbb1585
AL
1365static void
1366#if defined(__GNUC__)
1367__attribute__((destructor))
aebd1ac7 1368#endif
de009b76 1369perl_fini(void)
aebd1ac7 1370{
27da23d5 1371 dVAR;
c301d606 1372 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1373 FREE_THREAD_KEY;
1374}
1375
1376#endif /* WIN32 */
1377#endif /* THREADS */
1378
4b556e6c 1379void
864dbfa3 1380Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1381{
97aff369 1382 dVAR;
3280af22
NIS
1383 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1384 PL_exitlist[PL_exitlistlen].fn = fn;
1385 PL_exitlist[PL_exitlistlen].ptr = ptr;
1386 ++PL_exitlistlen;
4b556e6c
JD
1387}
1388
b7975bdd
NC
1389STATIC void
1390S_set_caret_X(pTHX) {
97aff369 1391 dVAR;
fafc274c 1392 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1393 if (tmpgv) {
0f1723e1 1394 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1395#if defined(OS2)
1396 sv_setpv(caret_x, os2_execname(aTHX));
1397#else
2982a345
NC
1398# ifdef USE_KERN_PROC_PATHNAME
1399 size_t size = 0;
1400 int mib[4];
1401 mib[0] = CTL_KERN;
1402 mib[1] = KERN_PROC;
1403 mib[2] = KERN_PROC_PATHNAME;
1404 mib[3] = -1;
1405
1406 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1407 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1408 sv_grow(caret_x, size);
1409
1410 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1411 && size > 2) {
1412 SvPOK_only(caret_x);
1413 SvCUR_set(caret_x, size - 1);
1414 SvTAINT(caret_x);
1415 return;
1416 }
1417 }
ae60cb46
NC
1418# elif defined(USE_NSGETEXECUTABLEPATH)
1419 char buf[1];
1420 uint32_t size = sizeof(buf);
ae60cb46
NC
1421
1422 _NSGetExecutablePath(buf, &size);
1423 if (size < MAXPATHLEN * MAXPATHLEN) {
1424 sv_grow(caret_x, size);
1425 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1426 char *const tidied = realpath(SvPVX(caret_x), NULL);
1427 if (tidied) {
1428 sv_setpv(caret_x, tidied);
1429 free(tidied);
1430 } else {
1431 SvPOK_only(caret_x);
1432 SvCUR_set(caret_x, size);
1433 }
1434 return;
1435 }
1436 }
2982a345 1437# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1438 char buf[MAXPATHLEN];
1439 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1440
1441 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1442 includes a spurious NUL which will cause $^X to fail in system
1443 or backticks (this will prevent extensions from being built and
1444 many tests from working). readlink is not meant to add a NUL.
1445 Normal readlink works fine.
1446 */
1447 if (len > 0 && buf[len-1] == '\0') {
1448 len--;
1449 }
1450
1451 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1452 returning the text "unknown" from the readlink rather than the path
1453 to the executable (or returning an error from the readlink). Any
1454 valid path has a '/' in it somewhere, so use that to validate the
1455 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1456 */
1457 if (len > 0 && memchr(buf, '/', len)) {
1458 sv_setpvn(caret_x, buf, len);
82552a95 1459 return;
700dd4f8 1460 }
82552a95
NC
1461# endif
1462 /* Fallback to this: */
0f1723e1 1463 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1464#endif
b7975bdd
NC
1465 }
1466}
1467
954c1994
GS
1468/*
1469=for apidoc perl_parse
1470
1471Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1472
1473=cut
1474*/
1475
03d9f026
FC
1476#define SET_CURSTASH(newstash) \
1477 if (PL_curstash != newstash) { \
1478 SvREFCNT_dec(PL_curstash); \
1479 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1480 }
1481
79072805 1482int
0cb96387 1483perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1484{
27da23d5 1485 dVAR;
6224f72b 1486 I32 oldscope;
6224f72b 1487 int ret;
db36c5a1 1488 dJMPENV;
8d063cd8 1489
7918f24d
NC
1490 PERL_ARGS_ASSERT_PERL_PARSE;
1491#ifndef MULTIPLICITY
ed6c66dd 1492 PERL_UNUSED_ARG(my_perl);
7918f24d 1493#endif
9d4ba2ae 1494
b0891165
JH
1495#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1496 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1497 * This MUST be done before any hash stores or fetches take place.
486ec47a 1498 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1499 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1500 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1501 if (!PL_rehash_seed_set)
1502 PL_rehash_seed = get_hash_seed();
b0891165 1503 {
9d4ba2ae 1504 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1505
1b6737cc
AL
1506 if (s && (atoi(s) == 1))
1507 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1508 }
1509#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1510
3280af22 1511 PL_origargc = argc;
e2975953 1512 PL_origargv = argv;
a0d0e21e 1513
a2722ac9
GA
1514 if (PL_origalen != 0) {
1515 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1516 }
1517 else {
3cb9023d
JH
1518 /* Set PL_origalen be the sum of the contiguous argv[]
1519 * elements plus the size of the env in case that it is
e9137a8e 1520 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1521 * as the maximum modifiable length of $0. In the worst case
1522 * the area we are able to modify is limited to the size of
43c32782 1523 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1524 * --jhi */
e1ec3a88 1525 const char *s = NULL;
54bfe034 1526 int i;
1b6737cc 1527 const UV mask =
7d8e7db3 1528 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1529 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1530 const UV aligned =
43c32782
JH
1531 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1532
1533 /* See if all the arguments are contiguous in memory. Note
1534 * that 'contiguous' is a loose term because some platforms
1535 * align the argv[] and the envp[]. If the arguments look
1536 * like non-aligned, assume that they are 'strictly' or
1537 * 'traditionally' contiguous. If the arguments look like
1538 * aligned, we just check that they are within aligned
1539 * PTRSIZE bytes. As long as no system has something bizarre
1540 * like the argv[] interleaved with some other data, we are
1541 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1542 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1543 while (*s) s++;
1544 for (i = 1; i < PL_origargc; i++) {
1545 if ((PL_origargv[i] == s + 1
43c32782 1546#ifdef OS2
c8941eeb 1547 || PL_origargv[i] == s + 2
43c32782 1548#endif
c8941eeb
JH
1549 )
1550 ||
1551 (aligned &&
1552 (PL_origargv[i] > s &&
1553 PL_origargv[i] <=
1554 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1555 )
1556 {
1557 s = PL_origargv[i];
1558 while (*s) s++;
1559 }
1560 else
1561 break;
54bfe034 1562 }
54bfe034 1563 }
a4a109c2
JD
1564
1565#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1566 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1567 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1568 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1569 ||
1570 (aligned &&
1571 (PL_origenviron[0] > s &&
1572 PL_origenviron[0] <=
1573 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1574 )
1575 {
9d419b5f 1576#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1577 s = PL_origenviron[0];
1578 while (*s) s++;
1579#endif
bd61b366 1580 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1581 /* Force copy of environment. */
1582 for (i = 1; PL_origenviron[i]; i++) {
1583 if (PL_origenviron[i] == s + 1
1584 ||
1585 (aligned &&
1586 (PL_origenviron[i] > s &&
1587 PL_origenviron[i] <=
1588 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1589 )
1590 {
1591 s = PL_origenviron[i];
1592 while (*s) s++;
1593 }
1594 else
1595 break;
54bfe034 1596 }
43c32782 1597 }
54bfe034 1598 }
a4a109c2
JD
1599#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1600
2d2af554 1601 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1602 }
1603
3280af22 1604 if (PL_do_undump) {
a0d0e21e
LW
1605
1606 /* Come here if running an undumped a.out. */
1607
3280af22
NIS
1608 PL_origfilename = savepv(argv[0]);
1609 PL_do_undump = FALSE;
a0d0e21e 1610 cxstack_ix = -1; /* start label stack again */
748a9306 1611 init_ids();
b7975bdd
NC
1612 assert (!PL_tainted);
1613 TAINT;
1614 S_set_caret_X(aTHX);
1615 TAINT_NOT;
a0d0e21e
LW
1616 init_postdump_symbols(argc,argv,env);
1617 return 0;
1618 }
1619
3280af22 1620 if (PL_main_root) {
3280af22 1621 op_free(PL_main_root);
5f66b61c 1622 PL_main_root = NULL;
ff0cee69 1623 }
5f66b61c 1624 PL_main_start = NULL;
3280af22 1625 SvREFCNT_dec(PL_main_cv);
601f1833 1626 PL_main_cv = NULL;
79072805 1627
3280af22
NIS
1628 time(&PL_basetime);
1629 oldscope = PL_scopestack_ix;
599cee73 1630 PL_dowarn = G_WARN_OFF;
f86702cc 1631
14dd3ad8 1632 JMPENV_PUSH(ret);
6224f72b 1633 switch (ret) {
312caa8e 1634 case 0:
14dd3ad8 1635 parse_body(env,xsinit);
9ebf26ad 1636 if (PL_unitcheckav) {
3c10abe3 1637 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1638 }
1639 if (PL_checkav) {
ca7b837b 1640 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1641 call_list(oldscope, PL_checkav);
9ebf26ad 1642 }
14dd3ad8
GS
1643 ret = 0;
1644 break;
6224f72b
GS
1645 case 1:
1646 STATUS_ALL_FAILURE;
1647 /* FALL THROUGH */
1648 case 2:
1649 /* my_exit() was called */
3280af22 1650 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1651 LEAVE;
1652 FREETMPS;
03d9f026 1653 SET_CURSTASH(PL_defstash);
9ebf26ad 1654 if (PL_unitcheckav) {
3c10abe3 1655 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1656 }
1657 if (PL_checkav) {
ca7b837b 1658 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1659 call_list(oldscope, PL_checkav);
9ebf26ad 1660 }
37038d91 1661 ret = STATUS_EXIT;
14dd3ad8 1662 break;
6224f72b 1663 case 3:
bf49b057 1664 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1665 ret = 1;
1666 break;
6224f72b 1667 }
14dd3ad8
GS
1668 JMPENV_POP;
1669 return ret;
1670}
1671
4a5df386
NC
1672/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1673 miniperl, and we need to see those flags reflected in the values here. */
1674
1675/* What this returns is subject to change. Use the public interface in Config.
1676 */
1677static void
1678S_Internals_V(pTHX_ CV *cv)
1679{
1680 dXSARGS;
1681#ifdef LOCAL_PATCH_COUNT
1682 const int local_patch_count = LOCAL_PATCH_COUNT;
1683#else
1684 const int local_patch_count = 0;
1685#endif
2dc296d2 1686 const int entries = 3 + local_patch_count;
4a5df386
NC
1687 int i;
1688 static char non_bincompat_options[] =
1689# ifdef DEBUGGING
1690 " DEBUGGING"
1691# endif
1692# ifdef NO_MATHOMS
0d311fbe 1693 " NO_MATHOMS"
4a5df386
NC
1694# endif
1695# ifdef PERL_DISABLE_PMC
1696 " PERL_DISABLE_PMC"
1697# endif
1698# ifdef PERL_DONT_CREATE_GVSV
1699 " PERL_DONT_CREATE_GVSV"
1700# endif
9a044a43
NC
1701# ifdef PERL_EXTERNAL_GLOB
1702 " PERL_EXTERNAL_GLOB"
1703# endif
4a5df386
NC
1704# ifdef PERL_IS_MINIPERL
1705 " PERL_IS_MINIPERL"
1706# endif
1707# ifdef PERL_MALLOC_WRAP
1708 " PERL_MALLOC_WRAP"
1709# endif
1710# ifdef PERL_MEM_LOG
1711 " PERL_MEM_LOG"
1712# endif
1713# ifdef PERL_MEM_LOG_NOIMPL
1714 " PERL_MEM_LOG_NOIMPL"
1715# endif
c3cf41ec
NC
1716# ifdef PERL_PRESERVE_IVUV
1717 " PERL_PRESERVE_IVUV"
1718# endif
c051e30b
NC
1719# ifdef PERL_RELOCATABLE_INCPUSH
1720 " PERL_RELOCATABLE_INCPUSH"
1721# endif
4a5df386
NC
1722# ifdef PERL_USE_DEVEL
1723 " PERL_USE_DEVEL"
1724# endif
1725# ifdef PERL_USE_SAFE_PUTENV
1726 " PERL_USE_SAFE_PUTENV"
1727# endif
a3749cf3
NC
1728# ifdef UNLINK_ALL_VERSIONS
1729 " UNLINK_ALL_VERSIONS"
1730# endif
de618ee4
NC
1731# ifdef USE_ATTRIBUTES_FOR_PERLIO
1732 " USE_ATTRIBUTES_FOR_PERLIO"
1733# endif
4a5df386
NC
1734# ifdef USE_FAST_STDIO
1735 " USE_FAST_STDIO"
1736# endif
98548bdf
NC
1737# ifdef USE_LOCALE
1738 " USE_LOCALE"
1739# endif
98548bdf
NC
1740# ifdef USE_LOCALE_CTYPE
1741 " USE_LOCALE_CTYPE"
1742# endif
5a8d8935
NC
1743# ifdef USE_PERL_ATOF
1744 " USE_PERL_ATOF"
1745# endif
0d311fbe
NC
1746# ifdef USE_SITECUSTOMIZE
1747 " USE_SITECUSTOMIZE"
1748# endif
4a5df386
NC
1749 ;
1750 PERL_UNUSED_ARG(cv);
1751 PERL_UNUSED_ARG(items);
1752
1753 EXTEND(SP, entries);
1754
1755 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1756 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1757 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1758
1759#ifdef __DATE__
1760# ifdef __TIME__
1761 PUSHs(Perl_newSVpvn_flags(aTHX_
1762 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1763 SVs_TEMP));
1764# else
1765 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1766 SVs_TEMP));
1767# endif
1768#else
1769 PUSHs(&PL_sv_undef);
1770#endif
1771
4a5df386
NC
1772 for (i = 1; i <= local_patch_count; i++) {
1773 /* This will be an undef, if PL_localpatches[i] is NULL. */
1774 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1775 }
1776
1777 XSRETURN(entries);
1778}
1779
be71fc8f
NC
1780#define INCPUSH_UNSHIFT 0x01
1781#define INCPUSH_ADD_OLD_VERS 0x02
1782#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1783#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1784#define INCPUSH_NOT_BASEDIR 0x10
1785#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1786#define INCPUSH_ADD_SUB_DIRS \
1787 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1788
312caa8e 1789STATIC void *
14dd3ad8 1790S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1791{
27da23d5 1792 dVAR;
2f9285f8 1793 PerlIO *rsfp;
312caa8e 1794 int argc = PL_origargc;
8f42b153 1795 char **argv = PL_origargv;
e1ec3a88 1796 const char *scriptname = NULL;
312caa8e 1797 VOL bool dosearch = FALSE;
c7030b81 1798 register char c;
737c24fc 1799 bool doextract = FALSE;
bd61b366 1800 const char *cddir = NULL;
ab019eaa 1801#ifdef USE_SITECUSTOMIZE
20ef40cf 1802 bool minus_f = FALSE;
ab019eaa 1803#endif
009d90df 1804 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1805 bool add_read_e_script = FALSE;
87606032 1806 U32 lex_start_flags = 0;
009d90df 1807
ca7b837b 1808 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1809
009d90df 1810 SvGROW(linestr_sv, 80);
76f68e9b 1811 sv_setpvs(linestr_sv,"");
312caa8e 1812
6224f72b 1813 init_main_stash();
54310121 1814
c7030b81
NC
1815 {
1816 const char *s;
6224f72b
GS
1817 for (argc--,argv++; argc > 0; argc--,argv++) {
1818 if (argv[0][0] != '-' || !argv[0][1])
1819 break;
6224f72b
GS
1820 s = argv[0]+1;
1821 reswitch:
47f56822 1822 switch ((c = *s)) {
729a02f2 1823 case 'C':
1d5472a9
GS
1824#ifndef PERL_STRICT_CR
1825 case '\r':
1826#endif
6224f72b
GS
1827 case ' ':
1828 case '0':
1829 case 'F':
1830 case 'a':
1831 case 'c':
1832 case 'd':
1833 case 'D':
1834 case 'h':
1835 case 'i':
1836 case 'l':
1837 case 'M':
1838 case 'm':
1839 case 'n':
1840 case 'p':
1841 case 's':
1842 case 'u':
1843 case 'U':
1844 case 'v':
599cee73
PM
1845 case 'W':
1846 case 'X':
6224f72b 1847 case 'w':
97bd5664 1848 if ((s = moreswitches(s)))
6224f72b
GS
1849 goto reswitch;
1850 break;
33b78306 1851
1dbad523 1852 case 't':
22f7c9c9 1853 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1854 if( !PL_tainting ) {
1855 PL_taint_warn = TRUE;
1856 PL_tainting = TRUE;
1857 }
1858 s++;
1859 goto reswitch;
6224f72b 1860 case 'T':
22f7c9c9 1861 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1862 PL_tainting = TRUE;
317ea90d 1863 PL_taint_warn = FALSE;
6224f72b
GS
1864 s++;
1865 goto reswitch;
f86702cc 1866
bc9b29db
RH
1867 case 'E':
1868 PL_minus_E = TRUE;
1869 /* FALL THROUGH */
6224f72b 1870 case 'e':
f20b2998 1871 forbid_setid('e', FALSE);
3280af22 1872 if (!PL_e_script) {
396482e1 1873 PL_e_script = newSVpvs("");
5486870f 1874 add_read_e_script = TRUE;
6224f72b
GS
1875 }
1876 if (*++s)
3280af22 1877 sv_catpv(PL_e_script, s);
6224f72b 1878 else if (argv[1]) {
3280af22 1879 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1880 argc--,argv++;
1881 }
1882 else
47f56822 1883 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1884 sv_catpvs(PL_e_script, "\n");
6224f72b 1885 break;
afe37c7d 1886
20ef40cf 1887 case 'f':
f5542d3a 1888#ifdef USE_SITECUSTOMIZE
20ef40cf 1889 minus_f = TRUE;
f5542d3a 1890#endif
20ef40cf
GA
1891 s++;
1892 goto reswitch;
1893
6224f72b 1894 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1895 forbid_setid('I', FALSE);
bd61b366 1896 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1897 argc--,argv++;
1898 }
6224f72b 1899 if (s && *s) {
0df16ed7 1900 STRLEN len = strlen(s);
55b4bc1c 1901 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1902 }
1903 else
a67e862a 1904 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1905 break;
6224f72b 1906 case 'S':
f20b2998 1907 forbid_setid('S', FALSE);
6224f72b
GS
1908 dosearch = TRUE;
1909 s++;
1910 goto reswitch;
1911 case 'V':
7edfd0ef
NC
1912 {
1913 SV *opts_prog;
1914
7edfd0ef 1915 if (*++s != ':') {
37ca4a5b 1916 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1917 }
1918 else {
1919 ++s;
1920 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1921 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1922 0, s, 0);
1923 s += strlen(s);
1924 }
37ca4a5b 1925 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1926 /* don't look for script or read stdin */
1927 scriptname = BIT_BUCKET;
1928 goto reswitch;
6224f72b 1929 }
6224f72b 1930 case 'x':
737c24fc 1931 doextract = TRUE;
6224f72b 1932 s++;
304334da 1933 if (*s)
f4c556ac 1934 cddir = s;
6224f72b
GS
1935 break;
1936 case 0:
1937 break;
1938 case '-':
1939 if (!*++s || isSPACE(*s)) {
1940 argc--,argv++;
1941 goto switch_end;
1942 }
ee8bc8b7
NC
1943 /* catch use of gnu style long options.
1944 Both of these exit immediately. */
1945 if (strEQ(s, "version"))
1946 minus_v();
1947 if (strEQ(s, "help"))
1948 usage();
6224f72b
GS
1949 s--;
1950 /* FALL THROUGH */
1951 default:
cea2e8a9 1952 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1953 }
1954 }
c7030b81
NC
1955 }
1956
6224f72b 1957 switch_end:
54310121 1958
c7030b81
NC
1959 {
1960 char *s;
1961
f675dbe5
CB
1962 if (
1963#ifndef SECURE_INTERNAL_GETENV
1964 !PL_tainting &&
1965#endif
cf756827 1966 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1967 {
74288ac8
GS
1968 while (isSPACE(*s))
1969 s++;
317ea90d 1970 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1971 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1972 PL_tainting = TRUE;
317ea90d
MS
1973 PL_taint_warn = FALSE;
1974 }
74288ac8 1975 else {
bd61b366 1976 char *popt_copy = NULL;
74288ac8 1977 while (s && *s) {
54913509 1978 const char *d;
74288ac8
GS
1979 while (isSPACE(*s))
1980 s++;
1981 if (*s == '-') {
1982 s++;
1983 if (isSPACE(*s))
1984 continue;
1985 }
4ea8f8fb 1986 d = s;
74288ac8
GS
1987 if (!*s)
1988 break;
2b622f1a 1989 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1990 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1991 while (++s && *s) {
1992 if (isSPACE(*s)) {
cf756827 1993 if (!popt_copy) {
bfa6c418
NC
1994 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1995 s = popt_copy + (s - d);
1996 d = popt_copy;
cf756827 1997 }
4ea8f8fb
MS
1998 *s++ = '\0';
1999 break;
2000 }
2001 }
1c4db469 2002 if (*d == 't') {
317ea90d
MS
2003 if( !PL_tainting ) {
2004 PL_taint_warn = TRUE;
2005 PL_tainting = TRUE;
2006 }
1c4db469 2007 } else {
97bd5664 2008 moreswitches(d);
1c4db469 2009 }
6224f72b 2010 }
6224f72b
GS
2011 }
2012 }
c7030b81 2013 }
a0d0e21e 2014
c29067d7
CH
2015 /* Set $^X early so that it can be used for relocatable paths in @INC */
2016 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2017 assert (!PL_tainted);
2018 TAINT;
2019 S_set_caret_X(aTHX);
2020 TAINT_NOT;
2021
43c0c913 2022#if defined(USE_SITECUSTOMIZE)
20ef40cf 2023 if (!minus_f) {
43c0c913 2024 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2025 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2026 ie a q() operator with a NUL byte as a the delimiter. This avoids
2027 problems with pathnames containing (say) ' */
43c0c913
NC
2028# ifdef PERL_IS_MINIPERL
2029 AV *const inc = GvAV(PL_incgv);
2030 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2031
2032 if (inc0) {
2033 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2034 Perl_newSVpvf(aTHX_
fc81b718
NC
2035 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2036 0, *inc0, 0,
2037 0, *inc0, 0));
43c0c913
NC
2038 }
2039# else
2040 /* SITELIB_EXP is a function call on Win32. */
c29067d7
CH
2041 const char *const raw_sitelib = SITELIB_EXP;
2042 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2043 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2044 INCPUSH_CAN_RELOCATE);
2045 const char *const sitelib = SvPVX(sitelib_sv);
29a861e7 2046 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc 2047 Perl_newSVpvf(aTHX_
fc81b718
NC
2048 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2049 0, sitelib, 0,
2050 0, sitelib, 0));
c29067d7
CH
2051 assert (SvREFCNT(sitelib_sv) == 1);
2052 SvREFCNT_dec(sitelib_sv);
43c0c913 2053# endif
20ef40cf
GA
2054 }
2055#endif
2056
6224f72b
GS
2057 if (!scriptname)
2058 scriptname = argv[0];
3280af22 2059 if (PL_e_script) {
6224f72b
GS
2060 argc++,argv--;
2061 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2062 }
bd61b366 2063 else if (scriptname == NULL) {
6224f72b
GS
2064#ifdef MSDOS
2065 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2066 moreswitches("h");
6224f72b
GS
2067#endif
2068 scriptname = "-";
2069 }
2070
b7975bdd 2071 assert (!PL_tainted);
2cace6ac 2072 init_perllib();
6224f72b 2073
a52eba0e 2074 {
f20b2998 2075 bool suidscript = FALSE;
829372d3 2076
8d113837 2077 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2078 if (!rsfp) {
2079 rsfp = PerlIO_stdin();
87606032 2080 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2081 }
6224f72b 2082
2f9285f8 2083 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2084 linestr_sv, rsfp);
6224f72b 2085
64ca3a65 2086#ifndef PERL_MICRO
a52eba0e
NC
2087# if defined(SIGCHLD) || defined(SIGCLD)
2088 {
2089# ifndef SIGCHLD
2090# define SIGCHLD SIGCLD
2091# endif
2092 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2093 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2094 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2095 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2096 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2097 }
0b5b802d 2098 }
a52eba0e 2099# endif
64ca3a65 2100#endif
0b5b802d 2101
737c24fc 2102 if (doextract) {
faef540c 2103
f20b2998 2104 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2105 setuid scripts. */
2106 forbid_setid('x', suidscript);
f20b2998 2107 /* Hence you can't get here if suidscript is true */
faef540c 2108
2f9285f8 2109 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2110 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2111 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2112 }
f4c556ac 2113 }
6224f72b 2114
ea726b52 2115 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2116 CvUNIQUE_on(PL_compcv);
2117
dd2155a4 2118 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2119
dd69841b
BB
2120 PL_isarev = newHV();
2121
0c4f7ff0 2122 boot_core_PerlIO();
6224f72b 2123 boot_core_UNIVERSAL();
e1a479c5 2124 boot_core_mro();
4a5df386 2125 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2126
2127 if (xsinit)
acfe0abc 2128 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2129#ifndef PERL_MICRO
d0d72822 2130#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2131 init_os_extras();
6224f72b 2132#endif
64ca3a65 2133#endif
6224f72b 2134
29209bc5 2135#ifdef USE_SOCKS
1b9c9cf5
DH
2136# ifdef HAS_SOCKS5_INIT
2137 socks5_init(argv[0]);
2138# else
29209bc5 2139 SOCKSinit(argv[0]);
1b9c9cf5 2140# endif
ac27b0f5 2141#endif
29209bc5 2142
6224f72b
GS
2143 init_predump_symbols();
2144 /* init_postdump_symbols not currently designed to be called */
2145 /* more than once (ENV isn't cleared first, for example) */
2146 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2147 if (!PL_do_undump)
6224f72b
GS
2148 init_postdump_symbols(argc,argv,env);
2149
27da23d5
JH
2150 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2151 * or explicitly in some platforms.
085a54d9 2152 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2153 * look like the user wants to use UTF-8. */
a0fd4948 2154#if defined(__SYMBIAN32__)
27da23d5
JH
2155 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2156#endif
e27b5b51 2157# ifndef PERL_IS_MINIPERL
06e66572
JH
2158 if (PL_unicode) {
2159 /* Requires init_predump_symbols(). */
a05d7ebb 2160 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2161 IO* io;
2162 PerlIO* fp;
2163 SV* sv;
2164
a05d7ebb 2165 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2166 * and the default open disciplines. */
a05d7ebb
JH
2167 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2168 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2169 (fp = IoIFP(io)))
2170 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2171 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2172 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2173 (fp = IoOFP(io)))
2174 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2175 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2176 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2177 (fp = IoOFP(io)))
2178 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2179 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2180 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2181 SVt_PV)))) {
a05d7ebb
JH
2182 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2183 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2184 if (in) {
2185 if (out)
76f68e9b 2186 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2187 else
76f68e9b 2188 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2189 }
2190 else if (out)
76f68e9b 2191 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2192 SvSETMAGIC(sv);
2193 }
b310b053
JH
2194 }
2195 }
e27b5b51 2196#endif
b310b053 2197
c7030b81
NC
2198 {
2199 const char *s;
4ffa73a3
JH
2200 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2201 if (strEQ(s, "unsafe"))
2202 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2203 else if (strEQ(s, "safe"))
2204 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2205 else
2206 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2207 }
c7030b81 2208 }
4ffa73a3 2209
81d86705 2210#ifdef PERL_MAD
c7030b81
NC
2211 {
2212 const char *s;
81d86705
NC
2213 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2214 PL_madskills = 1;
2215 PL_minus_c = 1;
2216 if (!s || !s[0])
2217 PL_xmlfp = PerlIO_stdout();
2218 else {
2219 PL_xmlfp = PerlIO_open(s, "w");
2220 if (!PL_xmlfp)
2221 Perl_croak(aTHX_ "Can't open %s", s);
2222 }
1a9a51d4 2223 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2224 }
c7030b81
NC
2225 }
2226
2227 {
2228 const char *s;
81d86705
NC
2229 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2230 PL_madskills = atoi(s);
1a9a51d4 2231 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2232 }
c7030b81 2233 }
81d86705
NC
2234#endif
2235
87606032 2236 lex_start(linestr_sv, rsfp, lex_start_flags);
219f7226 2237 PL_subname = newSVpvs("main");
6224f72b 2238
5486870f
DM
2239 if (add_read_e_script)
2240 filter_add(read_e_script, NULL);
2241
6224f72b
GS
2242 /* now parse the script */
2243
93189314 2244 SETERRNO(0,SS_NORMAL);
28ac2b49 2245 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2246 if (PL_minus_c)
cea2e8a9 2247 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2248 else {
cea2e8a9 2249 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2250 PL_origfilename);
6224f72b
GS
2251 }
2252 }
57843af0 2253 CopLINE_set(PL_curcop, 0);
03d9f026 2254 SET_CURSTASH(PL_defstash);
3280af22
NIS
2255 if (PL_e_script) {
2256 SvREFCNT_dec(PL_e_script);
a0714e2c 2257 PL_e_script = NULL;
6224f72b
GS
2258 }
2259
3280af22 2260 if (PL_do_undump)
6224f72b
GS
2261 my_unexec();
2262
57843af0
GS
2263 if (isWARN_ONCE) {
2264 SAVECOPFILE(PL_curcop);
2265 SAVECOPLINE(PL_curcop);
3280af22 2266 gv_check(PL_defstash);
57843af0 2267 }
6224f72b
GS
2268
2269 LEAVE;
2270 FREETMPS;
2271
2272#ifdef MYMALLOC
f6a607bc
RGS
2273 {
2274 const char *s;
6224f72b
GS
2275 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2276 dump_mstats("after compilation:");
f6a607bc 2277 }
6224f72b
GS
2278#endif
2279
2280 ENTER;
febb3a6d 2281 PL_restartjmpenv = NULL;
3280af22 2282 PL_restartop = 0;
312caa8e 2283 return NULL;
6224f72b
GS
2284}
2285
954c1994
GS
2286/*
2287=for apidoc perl_run
2288
2289Tells a Perl interpreter to run. See L<perlembed>.
2290
2291=cut
2292*/
2293
6224f72b 2294int
0cb96387 2295perl_run(pTHXx)
6224f72b 2296{
97aff369 2297 dVAR;
6224f72b 2298 I32 oldscope;
14dd3ad8 2299 int ret = 0;
db36c5a1 2300 dJMPENV;
6224f72b 2301
7918f24d
NC
2302 PERL_ARGS_ASSERT_PERL_RUN;
2303#ifndef MULTIPLICITY
ed6c66dd 2304 PERL_UNUSED_ARG(my_perl);
7918f24d 2305#endif
9d4ba2ae 2306
3280af22 2307 oldscope = PL_scopestack_ix;
96e176bf
CL
2308#ifdef VMS
2309 VMSISH_HUSHED = 0;
2310#endif
6224f72b 2311
14dd3ad8 2312 JMPENV_PUSH(ret);
6224f72b
GS
2313 switch (ret) {
2314 case 1:
2315 cxstack_ix = -1; /* start context stack again */
312caa8e 2316 goto redo_body;
14dd3ad8 2317 case 0: /* normal completion */
14dd3ad8
GS
2318 redo_body:
2319 run_body(oldscope);
14dd3ad8
GS
2320 /* FALL THROUGH */
2321 case 2: /* my_exit() */
3280af22 2322 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2323 LEAVE;
2324 FREETMPS;
03d9f026 2325 SET_CURSTASH(PL_defstash);
3a1ee7e8 2326 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2327 PL_endav && !PL_minus_c) {
ca7b837b 2328 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2329 call_list(oldscope, PL_endav);
9ebf26ad 2330 }
6224f72b
GS
2331#ifdef MYMALLOC
2332 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2333 dump_mstats("after execution: ");
2334#endif
37038d91 2335 ret = STATUS_EXIT;
14dd3ad8 2336 break;
6224f72b 2337 case 3:
312caa8e
CS
2338 if (PL_restartop) {
2339 POPSTACK_TO(PL_mainstack);
2340 goto redo_body;
6224f72b 2341 }
5637ef5b 2342 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2343 FREETMPS;
14dd3ad8
GS
2344 ret = 1;
2345 break;
6224f72b
GS
2346 }
2347
14dd3ad8
GS
2348 JMPENV_POP;
2349 return ret;
312caa8e
CS
2350}
2351
dd374669 2352STATIC void
14dd3ad8
GS
2353S_run_body(pTHX_ I32 oldscope)
2354{
97aff369 2355 dVAR;
6224f72b 2356 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2357 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2358
3280af22 2359 if (!PL_restartop) {
81d86705
NC
2360#ifdef PERL_MAD
2361 if (PL_xmlfp) {
2362 xmldump_all();
2363 exit(0); /* less likely to core dump than my_exit(0) */
2364 }
2365#endif
cf2782cd 2366#ifdef DEBUGGING
f0e3f042
CS
2367 if (DEBUG_x_TEST || DEBUG_B_TEST)
2368 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2369 if (!DEBUG_q_TEST)
2370 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2371#endif
6224f72b 2372
3280af22 2373 if (PL_minus_c) {
bf49b057 2374 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2375 my_exit(0);
2376 }
3280af22 2377 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2378 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2379 if (PL_initav) {
ca7b837b 2380 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2381 call_list(oldscope, PL_initav);
9ebf26ad 2382 }
f1fac472
NC
2383#ifdef PERL_DEBUG_READONLY_OPS
2384 Perl_pending_Slabs_to_ro(aTHX);
2385#endif
6224f72b
GS
2386 }
2387
2388 /* do it */
2389
ca7b837b 2390 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2391
3280af22 2392 if (PL_restartop) {
febb3a6d 2393 PL_restartjmpenv = NULL;
533c011a 2394 PL_op = PL_restartop;
3280af22 2395 PL_restartop = 0;
cea2e8a9 2396 CALLRUNOPS(aTHX);
6224f72b 2397 }
3280af22
NIS
2398 else if (PL_main_start) {
2399 CvDEPTH(PL_main_cv) = 1;
533c011a 2400 PL_op = PL_main_start;
cea2e8a9 2401 CALLRUNOPS(aTHX);
6224f72b 2402 }
f6b3007c
JH
2403 my_exit(0);
2404 /* NOTREACHED */
6224f72b
GS
2405}
2406
954c1994 2407/*
ccfc67b7
JH
2408=head1 SV Manipulation Functions
2409
954c1994
GS
2410=for apidoc p||get_sv
2411
64ace3f8
NC
2412Returns the SV of the specified Perl scalar. C<flags> are passed to
2413C<gv_fetchpv>. If C<GV_ADD> is set and the
2414Perl variable does not exist then it will be created. If C<flags> is zero
2415and the variable does not exist then NULL is returned.
954c1994
GS
2416
2417=cut
2418*/
2419
6224f72b 2420SV*
64ace3f8 2421Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2422{
2423 GV *gv;
7918f24d
NC
2424
2425 PERL_ARGS_ASSERT_GET_SV;
2426
64ace3f8 2427 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2428 if (gv)
2429 return GvSV(gv);
a0714e2c 2430 return NULL;
6224f72b
GS
2431}
2432
954c1994 2433/*
ccfc67b7
JH
2434=head1 Array Manipulation Functions
2435
954c1994
GS
2436=for apidoc p||get_av
2437
f0b90de1
SF
2438Returns the AV of the specified Perl global or package array with the given
2439name (so it won't work on lexical variables). C<flags> are passed
2440to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2441Perl variable does not exist then it will be created. If C<flags> is zero
2442and the variable does not exist then NULL is returned.
954c1994 2443
f0b90de1
SF
2444Perl equivalent: C<@{"$name"}>.
2445
954c1994
GS
2446=cut
2447*/
2448
6224f72b 2449AV*
cbfd0a87 2450Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2451{
cbfd0a87 2452 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2453
2454 PERL_ARGS_ASSERT_GET_AV;
2455
cbfd0a87 2456 if (flags)
6224f72b
GS
2457 return GvAVn(gv);
2458 if (gv)
2459 return GvAV(gv);
7d49f689 2460 return NULL;
6224f72b
GS
2461}
2462
954c1994 2463/*
ccfc67b7
JH
2464=head1 Hash Manipulation Functions
2465
954c1994
GS
2466=for apidoc p||get_hv
2467
6673a63c
NC
2468Returns the HV of the specified Perl hash. C<flags> are passed to
2469C<gv_fetchpv>. If C<GV_ADD> is set and the
2470Perl variable does not exist then it will be created. If C<flags> is zero
2471and the variable does not exist then NULL is returned.
954c1994
GS
2472
2473=cut
2474*/
2475
6224f72b 2476HV*
6673a63c 2477Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2478{
6673a63c 2479 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2480
2481 PERL_ARGS_ASSERT_GET_HV;
2482
6673a63c 2483 if (flags)
a0d0e21e
LW
2484 return GvHVn(gv);
2485 if (gv)
2486 return GvHV(gv);
5c284bb0 2487 return NULL;
a0d0e21e
LW
2488}
2489
954c1994 2490/*
ccfc67b7
JH
2491=head1 CV Manipulation Functions
2492
780a5241
NC
2493=for apidoc p||get_cvn_flags
2494
2495Returns the CV of the specified Perl subroutine. C<flags> are passed to
2496C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2497exist then it will be declared (which has the same effect as saying
2498C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2499then NULL is returned.
2500
954c1994
GS
2501=for apidoc p||get_cv
2502
780a5241 2503Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2504
2505=cut
2506*/
2507
a0d0e21e 2508CV*
780a5241 2509Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2510{
780a5241 2511 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2512 /* XXX this is probably not what they think they're getting.
2513 * It has the same effect as "sub name;", i.e. just a forward
2514 * declaration! */
7918f24d
NC
2515
2516 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2517
780a5241 2518 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2519 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2520 return newSUB(start_subparse(FALSE, 0),
780a5241 2521 newSVOP(OP_CONST, 0, sv),
5f66b61c 2522 NULL, NULL);
780a5241 2523 }
a0d0e21e 2524 if (gv)
8ebc5c01 2525 return GvCVu(gv);
601f1833 2526 return NULL;
a0d0e21e
LW
2527}
2528
2c67934f
NC
2529/* Nothing in core calls this now, but we can't replace it with a macro and
2530 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2531CV*
2532Perl_get_cv(pTHX_ const char *name, I32 flags)
2533{
7918f24d
NC
2534 PERL_ARGS_ASSERT_GET_CV;
2535
780a5241
NC
2536 return get_cvn_flags(name, strlen(name), flags);
2537}
2538
79072805
LW
2539/* Be sure to refetch the stack pointer after calling these routines. */
2540
954c1994 2541/*
ccfc67b7
JH
2542
2543=head1 Callback Functions
2544
954c1994
GS
2545=for apidoc p||call_argv
2546
f0b90de1
SF
2547Performs a callback to the specified named and package-scoped Perl subroutine
2548with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2549
2550Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2551
2552=cut
2553*/
2554
a0d0e21e 2555I32
8f42b153 2556Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2557
8ac85365
NIS
2558 /* See G_* flags in cop.h */
2559 /* null terminated arg list */
8990e307 2560{
97aff369 2561 dVAR;
a0d0e21e 2562 dSP;
8990e307 2563
7918f24d
NC
2564 PERL_ARGS_ASSERT_CALL_ARGV;
2565
924508f0 2566 PUSHMARK(SP);
a0d0e21e 2567 if (argv) {
8990e307 2568 while (*argv) {
6e449a3a 2569 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2570 argv++;
2571 }
a0d0e21e 2572 PUTBACK;
8990e307 2573 }
864dbfa3 2574 return call_pv(sub_name, flags);
8990e307
LW
2575}
2576
954c1994
GS
2577/*
2578=for apidoc p||call_pv
2579
2580Performs a callback to the specified Perl sub. See L<perlcall>.
2581
2582=cut
2583*/
2584
a0d0e21e 2585I32
864dbfa3 2586Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2587 /* name of the subroutine */
2588 /* See G_* flags in cop.h */
a0d0e21e 2589{
7918f24d
NC
2590 PERL_ARGS_ASSERT_CALL_PV;
2591
0da0e728 2592 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2593}
2594
954c1994
GS
2595/*
2596=for apidoc p||call_method
2597
2598Performs a callback to the specified Perl method. The blessed object must
2599be on the stack. See L<perlcall>.
2600
2601=cut
2602*/
2603
a0d0e21e 2604I32
864dbfa3 2605Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2606 /* name of the subroutine */
2607 /* See G_* flags in cop.h */
a0d0e21e 2608{
46ca9bac 2609 STRLEN len;
7918f24d
NC
2610 PERL_ARGS_ASSERT_CALL_METHOD;
2611
46ca9bac 2612 len = strlen(methname);
2613
2614 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2615 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2616}
2617
2618/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2619/*
2620=for apidoc p||call_sv
2621
2622Performs a callback to the Perl sub whose name is in the SV. See
2623L<perlcall>.
2624
2625=cut
2626*/
2627
a0d0e21e 2628I32
001d637e 2629Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2630 /* See G_* flags in cop.h */
a0d0e21e 2631{
27da23d5 2632 dVAR; dSP;
a0d0e21e 2633 LOGOP myop; /* fake syntax tree node */
968b3946 2634 UNOP method_op;
aa689395 2635 I32 oldmark;
8ea43dc8 2636 VOL I32 retval = 0;
a0d0e21e 2637 I32 oldscope;
54310121 2638 bool oldcatch = CATCH_GET;
6224f72b 2639 int ret;
c4420975 2640 OP* const oldop = PL_op;
db36c5a1 2641 dJMPENV;
1e422769 2642
7918f24d
NC
2643 PERL_ARGS_ASSERT_CALL_SV;
2644
a0d0e21e
LW
2645 if (flags & G_DISCARD) {
2646 ENTER;
2647 SAVETMPS;
2648 }
2f8edad0
NC
2649 if (!(flags & G_WANT)) {
2650 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2651 */
2652 flags |= G_SCALAR;
2653 }
a0d0e21e 2654
aa689395 2655 Zero(&myop, 1, LOGOP);
5f66b61c 2656 myop.op_next = NULL;
f51d4af5 2657 if (!(flags & G_NOARGS))
aa689395 2658 myop.op_flags |= OPf_STACKED;
4f911530 2659 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2660 SAVEOP();
533c011a 2661 PL_op = (OP*)&myop;
aa689395 2662
3280af22
NIS
2663 EXTEND(PL_stack_sp, 1);
2664 *++PL_stack_sp = sv;
aa689395 2665 oldmark = TOPMARK;
3280af22 2666 oldscope = PL_scopestack_ix;
a0d0e21e 2667
3280af22 2668 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2669 /* Handle first BEGIN of -d. */
3280af22 2670 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2671 /* Try harder, since this may have been a sighandler, thus
2672 * curstash may be meaningless. */
ea726b52 2673 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2674 && !(flags & G_NODEBUG))
533c011a 2675 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2676
968b3946
GS
2677 if (flags & G_METHOD) {
2678 Zero(&method_op, 1, UNOP);
2679 method_op.op_next = PL_op;
2680 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2681 method_op.op_type = OP_METHOD;
968b3946 2682 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2683 myop.op_type = OP_ENTERSUB;
f39d0b86 2684 PL_op = (OP*)&method_op;
968b3946
GS
2685 }
2686
312caa8e 2687 if (!(flags & G_EVAL)) {
0cdb2077 2688 CATCH_SET(TRUE);
d6f07c05 2689 CALL_BODY_SUB((OP*)&myop);
312caa8e 2690 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2691 CATCH_SET(oldcatch);
312caa8e
CS
2692 }
2693 else {
d78bda3d 2694 myop.op_other = (OP*)&myop;
3280af22 2695 PL_markstack_ptr--;
edb2152a 2696 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2697 PL_markstack_ptr++;
a0d0e21e 2698
14dd3ad8 2699 JMPENV_PUSH(ret);
edb2152a 2700
6224f72b
GS
2701 switch (ret) {
2702 case 0:
14dd3ad8 2703 redo_body:
d6f07c05 2704 CALL_BODY_SUB((OP*)&myop);
312caa8e 2705 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2706 if (!(flags & G_KEEPERR)) {
ab69dbc2 2707 CLEAR_ERRSV();
8433848b 2708 }
a0d0e21e 2709 break;
6224f72b 2710 case 1:
f86702cc 2711 STATUS_ALL_FAILURE;
a0d0e21e 2712 /* FALL THROUGH */
6224f72b 2713 case 2:
a0d0e21e 2714 /* my_exit() was called */
03d9f026 2715 SET_CURSTASH(PL_defstash);
a0d0e21e 2716 FREETMPS;
14dd3ad8 2717 JMPENV_POP;
f86702cc 2718 my_exit_jump();
a0d0e21e 2719 /* NOTREACHED */
6224f72b 2720 case 3:
3280af22 2721 if (PL_restartop) {
febb3a6d 2722 PL_restartjmpenv = NULL;
533c011a 2723 PL_op = PL_restartop;
3280af22 2724 PL_restartop = 0;
312caa8e 2725 goto redo_body;
a0d0e21e 2726 }
3280af22 2727 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2728 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2729 retval = 0;
2730 else {
2731 retval = 1;
3280af22 2732 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2733 }
312caa8e 2734 break;
a0d0e21e 2735 }
a0d0e21e 2736
edb2152a
NC
2737 if (PL_scopestack_ix > oldscope)
2738 delete_eval_scope();
14dd3ad8 2739 JMPENV_POP;
a0d0e21e 2740 }
1e422769 2741
a0d0e21e 2742 if (flags & G_DISCARD) {
3280af22 2743 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2744 retval = 0;
2745 FREETMPS;
2746 LEAVE;
2747 }
533c011a 2748 PL_op = oldop;
a0d0e21e
LW
2749 return retval;
2750}
2751
6e72f9df 2752/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2753
954c1994
GS
2754/*
2755=for apidoc p||eval_sv
2756
be064c4a
DM
2757Tells Perl to C<eval> the string in the SV. It supports the same flags
2758as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2759
2760=cut
2761*/
2762
a0d0e21e 2763I32
864dbfa3 2764Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2765
8ac85365 2766 /* See G_* flags in cop.h */
a0d0e21e 2767{
97aff369 2768 dVAR;
924508f0 2769 dSP;
a0d0e21e 2770 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2771 VOL I32 oldmark = SP - PL_stack_base;
2772 VOL I32 retval = 0;
6224f72b 2773 int ret;
c4420975 2774 OP* const oldop = PL_op;
db36c5a1 2775 dJMPENV;
84902520 2776
7918f24d
NC
2777 PERL_ARGS_ASSERT_EVAL_SV;
2778
4633a7c4
LW
2779 if (flags & G_DISCARD) {
2780 ENTER;
2781 SAVETMPS;
2782 }
2783
462e5cf6 2784 SAVEOP();
533c011a
NIS
2785 PL_op = (OP*)&myop;
2786 Zero(PL_op, 1, UNOP);
3280af22
NIS
2787 EXTEND(PL_stack_sp, 1);
2788 *++PL_stack_sp = sv;
79072805 2789
4633a7c4
LW
2790 if (!(flags & G_NOARGS))
2791 myop.op_flags = OPf_STACKED;
5f66b61c 2792 myop.op_next = NULL;
6e72f9df 2793 myop.op_type = OP_ENTEREVAL;
4f911530 2794 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2795 if (flags & G_KEEPERR)
2796 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2797
dedbcade
DM
2798 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2799 * before a PUSHEVAL, which corrupts the stack after a croak */
2800 TAINT_PROPER("eval_sv()");
2801
14dd3ad8 2802 JMPENV_PUSH(ret);
6224f72b
GS
2803 switch (ret) {
2804 case 0:
14dd3ad8 2805 redo_body:
2ba65d5f
DM
2806 if (PL_op == (OP*)(&myop)) {
2807 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2808 if (!PL_op)
2809 goto fail; /* failed in compilation */
2810 }
4aca2f62 2811 CALLRUNOPS(aTHX);
312caa8e 2812 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2813 if (!(flags & G_KEEPERR)) {
ab69dbc2 2814 CLEAR_ERRSV();
8433848b 2815 }
4633a7c4 2816 break;
6224f72b 2817 case 1:
f86702cc 2818 STATUS_ALL_FAILURE;
4633a7c4 2819 /* FALL THROUGH */
6224f72b 2820 case 2:
4633a7c4 2821 /* my_exit() was called */
03d9f026 2822 SET_CURSTASH(PL_defstash);
4633a7c4 2823 FREETMPS;
14dd3ad8 2824 JMPENV_POP;
f86702cc 2825 my_exit_jump();
4633a7c4 2826 /* NOTREACHED */
6224f72b 2827 case 3:
3280af22 2828 if (PL_restartop) {
febb3a6d 2829 PL_restartjmpenv = NULL;
533c011a 2830 PL_op = PL_restartop;
3280af22 2831 PL_restartop = 0;
312caa8e 2832 goto redo_body;
4633a7c4 2833 }
4aca2f62 2834 fail:
3280af22 2835 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2836 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2837 retval = 0;
2838 else {
2839 retval = 1;
3280af22 2840 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2841 }
312caa8e 2842 break;
4633a7c4
LW
2843 }
2844
14dd3ad8 2845 JMPENV_POP;
4633a7c4 2846 if (flags & G_DISCARD) {
3280af22 2847 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2848 retval = 0;
2849 FREETMPS;
2850 LEAVE;
2851 }
533c011a 2852 PL_op = oldop;
4633a7c4
LW
2853 return retval;
2854}
2855
954c1994
GS
2856/*
2857=for apidoc p||eval_pv
2858
2859Tells Perl to C<eval> the given string and return an SV* result.
2860
2861=cut
2862*/
2863
137443ea 2864SV*
864dbfa3 2865Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2866{
97aff369 2867 dVAR;
137443ea
PP
2868 dSP;
2869 SV* sv = newSVpv(p, 0);
2870
7918f24d
NC
2871 PERL_ARGS_ASSERT_EVAL_PV;
2872
864dbfa3 2873 eval_sv(sv, G_SCALAR);
137443ea
PP
2874 SvREFCNT_dec(sv);
2875
2876 SPAGAIN;
2877 sv = POPs;
2878 PUTBACK;
2879
2d8e6c8d 2880 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2881 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2882 }
137443ea
PP
2883
2884 return sv;
2885}
2886
4633a7c4
LW
2887/* Require a module. */
2888
954c1994 2889/*
ccfc67b7
JH
2890=head1 Embedding Functions
2891
954c1994
GS
2892=for apidoc p||require_pv
2893
7d3fb230
BS
2894Tells Perl to C<require> the file named by the string argument. It is
2895analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2896implemented that way; consider using load_module instead.
954c1994 2897
7d3fb230 2898=cut */
954c1994 2899
4633a7c4 2900void
864dbfa3 2901Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2902{
97aff369 2903 dVAR;
d3acc0f7 2904 dSP;
97aff369 2905 SV* sv;
7918f24d
NC
2906
2907 PERL_ARGS_ASSERT_REQUIRE_PV;
2908
e788e7d3 2909 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2910 PUTBACK;
be41e5d9
NC
2911 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2912 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2913 SPAGAIN;
2914 POPSTACK;
79072805
LW
2915}
2916
76e3520e 2917STATIC void
b6f82619 2918S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2919{
ab821d7f 2920 /* This message really ought to be max 23 lines.
75c72d73 2921 * Removed -h because the user already knows that option. Others? */
fb73857a 2922
1566c39d
NC
2923 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2924 minimum of 509 character string literals. */
27da23d5 2925 static const char * const usage_msg[] = {
1566c39d
NC
2926" -0[octal] specify record separator (\\0, if no argument)\n"
2927" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2928" -C[number/list] enables the listed Unicode features\n"
2929" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2930" -d[:debugger] run program under debugger\n"
2931" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2932" -e program one line of program (several -e's allowed, omit programfile)\n"
2933" -E program like -e, but enables all optional features\n"
2934" -f don't do $sitelib/sitecustomize.pl at startup\n"
2935" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2936" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2937" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2938" -l[octal] enable line ending processing, specifies line terminator\n"
2939" -[mM][-]module execute \"use/no module...\" before executing program\n"
2940" -n assume \"while (<>) { ... }\" loop around program\n"
2941" -p assume loop like -n but print line also, like sed\n"
2942" -s enable rudimentary parsing for switches after programfile\n"
2943" -S look for programfile using PATH environment variable\n",
2944" -t enable tainting warnings\n"
2945" -T enable tainting checks\n"
2946" -u dump core after parsing program\n"
2947" -U allow unsafe operations\n"
2948" -v print version, patchlevel and license\n"
2949" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2950" -w enable many useful warnings\n"
1566c39d
NC
2951" -W enable all warnings\n"
2952" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2953" -X disable all warnings\n"
2954" \n"
2955"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2956NULL
2957};
27da23d5 2958 const char * const *p = usage_msg;
1566c39d 2959 PerlIO *out = PerlIO_stdout();
fb73857a 2960
1566c39d
NC
2961 PerlIO_printf(out,
2962 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2963 PL_origargv[0]);
fb73857a 2964 while (*p)
1566c39d 2965 PerlIO_puts(out, *p++);
b6f82619 2966 my_exit(0);
4633a7c4
LW
2967}
2968
b4ab917c
DM
2969/* convert a string of -D options (or digits) into an int.
2970 * sets *s to point to the char after the options */
2971
2972#ifdef DEBUGGING
2973int
e1ec3a88 2974Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2975{
27da23d5 2976 static const char * const usage_msgd[] = {
651b8f1a
NC
2977 " Debugging flag values: (see also -d)\n"
2978 " p Tokenizing and parsing (with v, displays parse stack)\n"
2979 " s Stack snapshots (with v, displays all stacks)\n"
2980 " l Context (loop) stack processing\n"
2981 " t Trace execution\n"
2982 " o Method and overloading resolution\n",
2983 " c String/numeric conversions\n"
2984 " P Print profiling info, source file input state\n"
2985 " m Memory and SV allocation\n"
2986 " f Format processing\n"
2987 " r Regular expression parsing and execution\n"
2988 " x Syntax tree dump\n",
2989 " u Tainting checks\n"
2990 " H Hash dump -- usurps values()\n"
2991 " X Scratchpad allocation\n"
2992 " D Cleaning up\n"
2993 " T Tokenising\n"
2994 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2995 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2996 " v Verbose: use in conjunction with other flags\n"
2997 " C Copy On Write\n"
2998 " A Consistency checks on internal structures\n"
2999 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3000 " M trace smart match resolution\n"
3001 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
3002 NULL
3003 };
b4ab917c 3004 int i = 0;
7918f24d
NC
3005
3006 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3007
b4ab917c
DM
3008 if (isALPHA(**s)) {
3009 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3010 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3011
3012 for (; isALNUM(**s); (*s)++) {
c4420975 3013 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3014 if (d)
3015 i |= 1 << (d - debopts);
3016 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3017 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3018 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3019 }
3020 }
e6e64d9b 3021 else if (isDIGIT(**s)) {
b4ab917c
DM
3022 i = atoi(*s);
3023 for (; isALNUM(**s); (*s)++) ;
3024 }
ddcf8bc1 3025 else if (givehelp) {
06e869a4 3026 const char *const *p = usage_msgd;
651b8f1a 3027 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3028 }
b4ab917c
DM
3029# ifdef EBCDIC
3030 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3031 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3032 "-Dp not implemented on this platform\n");
3033# endif
3034 return i;
3035}
3036#endif
3037
79072805
LW
3038/* This routine handles any switches that can be given during run */
3039
c7030b81
NC
3040const char *
3041Perl_moreswitches(pTHX_ const char *s)
79072805 3042{
27da23d5 3043 dVAR;
84c133a0 3044 UV rschar;
0544e6df 3045 const char option = *s; /* used to remember option in -m/-M code */
79072805 3046
7918f24d
NC
3047 PERL_ARGS_ASSERT_MORESWITCHES;
3048
79072805
LW
3049 switch (*s) {
3050 case '0':
a863c7d1 3051 {
f2095865 3052 I32 flags = 0;
a3b680e6 3053 STRLEN numlen;
f2095865
JH
3054
3055 SvREFCNT_dec(PL_rs);
3056 if (s[1] == 'x' && s[2]) {
a3b680e6 3057 const char *e = s+=2;
f2095865
JH
3058 U8 *tmps;
3059
a3b680e6
AL
3060 while (*e)
3061 e++;
f2095865
JH
3062 numlen = e - s;
3063 flags = PERL_SCAN_SILENT_ILLDIGIT;
3064 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3065 if (s + numlen < e) {
3066 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3067 numlen = 0;
3068 s--;
3069 }
396482e1 3070 PL_rs = newSVpvs("");
c5661c80 3071 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3072 tmps = (U8*)SvPVX(PL_rs);
3073 uvchr_to_utf8(tmps, rschar);
3074 SvCUR_set(PL_rs, UNISKIP(rschar));
3075 SvUTF8_on(PL_rs);
3076 }
3077 else {
3078 numlen = 4;
3079 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3080 if (rschar & ~((U8)~0))
3081 PL_rs = &PL_sv_undef;
3082 else if (!rschar && numlen >= 2)
396482e1 3083 PL_rs = newSVpvs("");
f2095865
JH
3084 else {
3085 char ch = (char)rschar;
3086 PL_rs = newSVpvn(&ch, 1);
3087 }
3088 }
64ace3f8 3089 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3090 return s + numlen;
a863c7d1 3091 }
46487f74 3092 case 'C':
a05d7ebb 3093 s++;
dd374669 3094 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3095 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3096 PL_utf8cache = -1;
46487f74 3097 return s;
2304df62 3098 case 'F':
3280af22 3099 PL_minus_F = TRUE;
ebce5377
RGS
3100 PL_splitstr = ++s;
3101 while (*s && !isSPACE(*s)) ++s;
e49e380e 3102 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3103 return s;
79072805 3104 case 'a':
3280af22 3105 PL_minus_a = TRUE;
79072805
LW
3106 s++;
3107 return s;
3108 case 'c':
3280af22 3109 PL_minus_c = TRUE;
79072805
LW
3110 s++;
3111 return s;
3112 case 'd':
f20b2998 3113 forbid_setid('d', FALSE);
4633a7c4 3114 s++;
2cbb2ee1
RGS
3115
3116 /* -dt indicates to the debugger that threads will be used */
3117 if (*s == 't' && !isALNUM(s[1])) {
3118 ++s;
3119 my_setenv("PERL5DB_THREADED", "1");
3120 }
3121
70c94a19
RR
3122 /* The following permits -d:Mod to accepts arguments following an =
3123 in the fashion that -MSome::Mod does. */
3124 if (*s == ':' || *s == '=') {
b19934fb
NC
3125 const char *start;
3126 const char *end;
3127 SV *sv;
3128
3129 if (*++s == '-') {
3130 ++s;
3131 sv = newSVpvs("no Devel::");
3132 } else {
3133 sv = newSVpvs("use Devel::");
3134 }
3135
3136 start = s;
3137 end = s + strlen(s);
f85893a1 3138
b19934fb 3139 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3140 while(isALNUM(*s) || *s==':') ++s;
3141 if (*s != '=')
f85893a1 3142 sv_catpvn(sv, start, end - start);
70c94a19
RR
3143 else {
3144 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3145 /* Don't use NUL as q// delimiter here, this string goes in the
3146 * environment. */
3147 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3148 }
f85893a1 3149 s = end;
184f32ec 3150 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3151 SvREFCNT_dec(sv);
4633a7c4 3152 }
ed094faf 3153 if (!PL_perldb) {
3280af22 3154 PL_perldb = PERLDB_ALL;
a0d0e21e 3155 init_debugger();
ed094faf 3156 }
79072805
LW
3157 return s;
3158 case 'D':
0453d815 3159 {
79072805 3160#ifdef DEBUGGING
f20b2998 3161 forbid_setid('D', FALSE);
b4ab917c 3162 s++;
dd374669 3163 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3164#else /* !DEBUGGING */
0453d815 3165 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3166 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3167 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3168 for (s++; isALNUM(*s); s++) ;
79072805 3169#endif
79072805 3170 return s;
0453d815 3171 }
4633a7c4 3172 case 'h':
b6f82619 3173 usage();
79072805 3174 case 'i':
43c5f42d 3175 Safefree(PL_inplace);
c030f24b
GH
3176#if defined(__CYGWIN__) /* do backup extension automagically */
3177 if (*(s+1) == '\0') {
c86a4f2e 3178 PL_inplace = savepvs(".bak");
c030f24b
GH
3179 return s+1;
3180 }
3181#endif /* __CYGWIN__ */
5ef5d758 3182 {
d4c19fe8 3183 const char * const start = ++s;
5ef5d758
NC
3184 while (*s && !isSPACE(*s))
3185 ++s;
3186
3187 PL_inplace = savepvn(start, s - start);
3188 }
7b8d334a 3189 if (*s) {
5ef5d758 3190 ++s;
7b8d334a 3191 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3192 s++;
7b8d334a 3193 }
fb73857a 3194 return s;
4e49a025 3195 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3196 forbid_setid('I', FALSE);
fb73857a
PP
3197 ++s;
3198 while (*s && isSPACE(*s))
3199 ++s;
3200 if (*s) {
c7030b81 3201 const char *e, *p;
0df16ed7
GS
3202 p = s;
3203 /* ignore trailing spaces (possibly followed by other switches) */
3204 do {
3205 for (e = p; *e && !isSPACE(*e); e++) ;
3206 p = e;
3207 while (isSPACE(*p))
3208 p++;
3209 } while (*p && *p != '-');
55b4bc1c 3210 incpush(s, e-s,
e28f3139 3211 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3212 s = p;
3213 if (*s == '-')
3214 s++;
79072805
LW
3215 }
3216 else
a67e862a 3217 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3218 return s;
79072805 3219 case 'l':
3280af22 3220 PL_minus_l = TRUE;
79072805 3221 s++;
7889fe52
NIS
3222 if (PL_ors_sv) {
3223 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3224 PL_ors_sv = NULL;
7889fe52 3225 }
79072805 3226 if (isDIGIT(*s)) {
53305cf1 3227 I32 flags = 0;
a3b680e6 3228 STRLEN numlen;
396482e1 3229 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3230 numlen = 3 + (*s == '0');
3231 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3232 s += numlen;
3233 }
3234 else {
8bfdd7d9 3235 if (RsPARA(PL_rs)) {
396482e1 3236 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3237 }
3238 else {
8bfdd7d9 3239 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3240 }
79072805
LW
3241 }
3242 return s;
1a30305b 3243 case 'M':
f20b2998 3244 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3245 /* FALL THROUGH */
3246 case 'm':
f20b2998 3247 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3248 if (*++s) {
c7030b81 3249 const char *start;
b64cb68c 3250 const char *end;
11343788 3251 SV *sv;
e1ec3a88 3252 const char *use = "use ";
0544e6df 3253 bool colon = FALSE;
a5f75d66 3254 /* -M-foo == 'no foo' */
d0043bd1
NC
3255 /* Leading space on " no " is deliberate, to make both
3256 possibilities the same length. */
3257 if (*s == '-') { use = " no "; ++s; }
3258 sv = newSVpvn(use,4);
a5f75d66 3259 start = s;
1a30305b 3260 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3261 while(isALNUM(*s) || *s==':') {
3262 if( *s++ == ':' ) {
3263 if( *s == ':' )
3264 s++;
3265 else
3266 colon = TRUE;
3267 }
3268 }
3269 if (s == start)
3270 Perl_croak(aTHX_ "Module name required with -%c option",
3271 option);
3272 if (colon)
3273 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3274 "contains single ':'",
63da6837 3275 (int)(s - start), start, option);
b64cb68c 3276 end = s + strlen(s);
c07a80fd 3277 if (*s != '=') {
b64cb68c 3278 sv_catpvn(sv, start, end - start);
0544e6df 3279 if (option == 'm') {
c07a80fd 3280 if (*s != '\0')
cea2e8a9 3281 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3282 sv_catpvs( sv, " ()");
c07a80fd
PP
3283 }
3284 } else {
11343788 3285 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3286 /* Use NUL as q''-delimiter. */
3287 sv_catpvs(sv, " split(/,/,q\0");
3288 ++s;
3289 sv_catpvn(sv, s, end - s);
396482e1 3290 sv_catpvs(sv, "\0)");
c07a80fd 3291 }
b64cb68c 3292 s = end;
29a861e7 3293 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3294 }
3295 else
0544e6df 3296 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3297 return s;
79072805 3298 case 'n':
3280af22 3299 PL_minus_n = TRUE;
79072805
LW
3300 s++;
3301 return s;
3302 case 'p':
3280af22 3303 PL_minus_p = TRUE;
79072805
LW
3304 s++;
3305 return s;
3306 case 's':
f20b2998 3307 forbid_setid('s', FALSE);
3280af22 3308 PL_doswitches = TRUE;
79072805
LW
3309 s++;
3310 return s;
6537fe72 3311 case 't':
27a6968b 3312 case 'T':
6537fe72 3313 if (!PL_tainting)
27a6968b 3314 TOO_LATE_FOR(*s);
6537fe72 3315 s++;
463ee0b2 3316 return s;
79072805 3317 case 'u':
3280af22 3318 PL_do_undump = TRUE;
79072805
LW
3319 s++;
3320 return s;
3321 case 'U':
3280af22 3322 PL_unsafe = TRUE;
79072805
LW
3323 s++;
3324 return s;
3325 case 'v':
c4bc78d9
NC
3326 minus_v();
3327 case 'w':
3328 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3329 PL_dowarn |= G_WARN_ON;
3330 }
3331 s++;
3332 return s;
3333 case 'W':
3334 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3335 if (!specialWARN(PL_compiling.cop_warnings))
3336 PerlMemShared_free(PL_compiling.cop_warnings);
3337 PL_compiling.cop_warnings = pWARN_ALL ;
3338 s++;
3339 return s;
3340 case 'X':
3341 PL_dowarn = G_WARN_ALL_OFF;
3342 if (!specialWARN(PL_compiling.cop_warnings))
3343 PerlMemShared_free(PL_compiling.cop_warnings);
3344 PL_compiling.cop_warnings = pWARN_NONE ;
3345 s++;
3346 return s;
3347 case '*':
3348 case ' ':
3349 while( *s == ' ' )
3350 ++s;
3351 if (s[0] == '-') /* Additional switches on #! line. */
3352 return s+1;
3353 break;
3354 case '-':
3355 case 0:
3356#if defined(WIN32) || !defined(PERL_STRICT_CR)
3357 case '\r':
3358#endif
3359 case '\n':
3360 case '\t':
3361 break;
3362#ifdef ALTERNATE_SHEBANG
3363 case 'S': /* OS/2 needs -S on "extproc" line. */
3364 break;
3365#endif
4bb78d63
CB
3366 case 'e': case 'f': case 'x': case 'E':
3367#ifndef ALTERNATE_SHEBANG
3368 case 'S':
3369#endif
3370 case 'V':
c4bc78d9 3371 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3372 default:
3373 Perl_croak(aTHX_
3374 "Unrecognized switch: -%.1s (-h will show valid options)",s
3375 );
c4bc78d9
NC
3376 }
3377 return NULL;
3378}
3379
3380
3381STATIC void
3382S_minus_v(pTHX)
3383{
d7aa5382 3384 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3385 upg_version(PL_patchlevel, TRUE);
8e9464f1 3386#if !defined(DGUX)
46807d8e
YO
3387 {
3388 SV* level= vstringify(PL_patchlevel);
3389#ifdef PERL_PATCHNUM
23d483e2
NC
3390# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3391 SV *num = newSVpvs(PERL_PATCHNUM "*");
3392# else
3393 SV *num = newSVpvs(PERL_PATCHNUM);
3394# endif
46807d8e
YO
3395
3396 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3397 SvREFCNT_dec(level);
3398 level= num;
3399 } else {
d0a9311f 3400 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3401 SvREFCNT_dec(num);
3402 }
3403 #endif
3404 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3405 "\nThis is perl " STRINGIFY(PERL_REVISION)
3406 ", version " STRINGIFY(PERL_VERSION)
3407 ", subversion " STRINGIFY(PERL_SUBVERSION)
3408 " (%"SVf") built for " ARCHNAME, level
3409 );
46807d8e
YO
3410 SvREFCNT_dec(level);
3411 }
8e9464f1
JH
3412#else /* DGUX */
3413/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3414 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3415 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3416 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3417 PerlIO_printf(PerlIO_stdout(),
3418 Perl_form(aTHX_ " built under %s at %s %s\n",
3419 OSNAME, __DATE__, __TIME__));
3420 PerlIO_printf(PerlIO_stdout(),
3421 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3422 OSVERS));
8e9464f1 3423#endif /* !DGUX */
fb73857a
PP
3424#if defined(LOCAL_PATCH_COUNT)
3425 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3426 PerlIO_printf(PerlIO_stdout(),
3427 "\n(with %d registered patch%s, "
3428 "see perl -V for more detail)",
bb7a0f54 3429 LOCAL_PATCH_COUNT,
b0e47665 3430 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3431#endif
1a30305b 3432
b0e47665 3433 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3434 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3435#ifdef MSDOS
b0e47665
GS
3436 PerlIO_printf(PerlIO_stdout(),
3437 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3438#endif
3439#ifdef DJGPP
b0e47665
GS
3440 PerlIO_printf(PerlIO_stdout(),
3441 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3442 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3443#endif
79072805 3444#ifdef OS2
b0e47665
GS
3445 PerlIO_printf(PerlIO_stdout(),
3446 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3447 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3448#endif
79072805 3449#ifdef atarist
b0e47665
GS
3450 PerlIO_printf(PerlIO_stdout(),
3451 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3452#endif
a3f9223b 3453#ifdef __BEOS__
b0e47665
GS
3454 PerlIO_printf(PerlIO_stdout(),
3455 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3456#endif
1d84e8df 3457#ifdef MPE
b0e47665 3458 PerlIO_printf(PerlIO_stdout(),
e583a879 3459 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3460#endif
9d116dd7 3461#ifdef OEMVS
b0e47665
GS
3462 PerlIO_printf(PerlIO_stdout(),
3463 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3464#endif
495c5fdc 3465#ifdef __VOS__
b0e47665 3466 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3467 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3468#endif
092bebab 3469#ifdef __OPEN_VM
b0e47665
GS
3470 PerlIO_printf(PerlIO_stdout(),
3471 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3472#endif
a1a0e61e 3473#ifdef POSIX_BC
b0e47665
GS
3474 PerlIO_printf(PerlIO_stdout(),
3475 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3476#endif
f83d2536 3477#ifdef EPOC
b0e47665 3478 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3479 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3480#endif
e1caacb4 3481#ifdef UNDER_CE
b475b3e6
JH
3482 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3483 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3484 wce_hitreturn();
3485#endif
a0fd4948 3486#ifdef __SYMBIAN32__
27da23d5
JH
3487 PerlIO_printf(PerlIO_stdout(),
3488 "Symbian port by Nokia, 2004-2005\n");
3489#endif
baed7233
DL
3490#ifdef BINARY_BUILD_NOTICE
3491 BINARY_BUILD_NOTICE;
3492#endif
b0e47665
GS
3493 PerlIO_printf(PerlIO_stdout(),
3494 "\n\
79072805 3495Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3496GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3497Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3498this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3499Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3500 my_exit(0);
79072805
LW
3501}
3502
3503/* compliments of Tom Christiansen */
3504
3505/* unexec() can be found in the Gnu emacs distribution */
ee580363 3506/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3507
3508void
864dbfa3 3509Perl_my_unexec(pTHX)
79072805 3510{
b37c2d43 3511 PERL_UNUSED_CONTEXT;
79072805 3512#ifdef UNEXEC
b37c2d43
AL
3513 SV * prog = newSVpv(BIN_EXP, 0);
3514 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3515 int status = 1;
79072805
LW
3516 extern int etext;
3517
396482e1 3518 sv_catpvs(prog, "/perl");