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Break the -v code out from Perl_moreswitches() into S_minus_v().
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
010d7370
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5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
6 * by Larry Wall and others
a687059c 7 *
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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
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11 */
12
a0d0e21e 13/*
4ac71550
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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
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17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
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); \
ad64d0ec 95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD);
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;
71ad1b0c 108 HINTS_REFCNT_INIT;
e6827a76 109 MUTEX_INIT(&PL_dollarzero_mutex);
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DM
110 MUTEX_INIT(&PL_my_ctx_mutex);
111# endif
e6827a76 112 }
c0bce9aa
NC
113#if defined(USE_ITHREADS)
114 else
115#else
116 /* This always happens for non-ithreads */
117#endif
118 {
e6827a76
NC
119 PERL_SET_THX(my_perl);
120 }
121}
06d86050 122
cbec8ebe
DM
123
124/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
125
126void
127Perl_sys_init(int* argc, char*** argv)
128{
4fc0badb 129 dVAR;
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130
131 PERL_ARGS_ASSERT_SYS_INIT;
132
cbec8ebe
DM
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_SYS_INIT_BODY(argc, argv);
136}
137
138void
139Perl_sys_init3(int* argc, char*** argv, char*** env)
140{
4fc0badb 141 dVAR;
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142
143 PERL_ARGS_ASSERT_SYS_INIT3;
144
cbec8ebe
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145 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
146 PERL_UNUSED_ARG(argv);
147 PERL_UNUSED_ARG(env);
148 PERL_SYS_INIT3_BODY(argc, argv, env);
149}
150
151void
d0820ef1 152Perl_sys_term()
cbec8ebe 153{
4fc0badb 154 dVAR;
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DM
155 if (!PL_veto_cleanup) {
156 PERL_SYS_TERM_BODY();
157 }
cbec8ebe
DM
158}
159
160
32e30700
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161#ifdef PERL_IMPLICIT_SYS
162PerlInterpreter *
7766f137
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163perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
164 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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GS
165 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
166 struct IPerlDir* ipD, struct IPerlSock* ipS,
167 struct IPerlProc* ipP)
168{
169 PerlInterpreter *my_perl;
7918f24d
NC
170
171 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
172
9f653bb5 173 /* Newx() needs interpreter, so call malloc() instead */
32e30700 174 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 175 S_init_tls_and_interp(my_perl);
32e30700
GS
176 Zero(my_perl, 1, PerlInterpreter);
177 PL_Mem = ipM;
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GS
178 PL_MemShared = ipMS;
179 PL_MemParse = ipMP;
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GS
180 PL_Env = ipE;
181 PL_StdIO = ipStd;
182 PL_LIO = ipLIO;
183 PL_Dir = ipD;
184 PL_Sock = ipS;
185 PL_Proc = ipP;
7cb608b5 186 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 187
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188 return my_perl;
189}
190#else
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GS
191
192/*
ccfc67b7
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193=head1 Embedding Functions
194
954c1994
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195=for apidoc perl_alloc
196
197Allocates a new Perl interpreter. See L<perlembed>.
198
199=cut
200*/
201
93a17b20 202PerlInterpreter *
cea2e8a9 203perl_alloc(void)
79072805 204{
cea2e8a9 205 PerlInterpreter *my_perl;
79072805 206
9f653bb5 207 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 208 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 209
e6827a76 210 S_init_tls_and_interp(my_perl);
7cb608b5 211#ifndef PERL_TRACK_MEMPOOL
07409e01 212 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
213#else
214 Zero(my_perl, 1, PerlInterpreter);
215 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
216 return my_perl;
217#endif
79072805 218}
32e30700 219#endif /* PERL_IMPLICIT_SYS */
79072805 220
954c1994
GS
221/*
222=for apidoc perl_construct
223
224Initializes a new Perl interpreter. See L<perlembed>.
225
226=cut
227*/
228
79072805 229void
0cb96387 230perl_construct(pTHXx)
79072805 231{
27da23d5 232 dVAR;
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NC
233
234 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
235
8990e307 236#ifdef MULTIPLICITY
54aff467 237 init_interp();
ac27b0f5 238 PL_perl_destruct_level = 1;
54aff467 239#else
7918f24d 240 PERL_UNUSED_ARG(my_perl);
54aff467
GS
241 if (PL_perl_destruct_level > 0)
242 init_interp();
243#endif
34caed6d
DM
244 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
245
34caed6d
DM
246 /* set read-only and try to insure than we wont see REFCNT==0
247 very often */
248
249 SvREADONLY_on(&PL_sv_undef);
250 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
251
252 sv_setpv(&PL_sv_no,PL_No);
253 /* value lookup in void context - happens to have the side effect
a43d94f2
NC
254 of caching the numeric forms. However, as &PL_sv_no doesn't contain
255 a string that is a valid numer, we have to turn the public flags by
256 hand: */
34caed6d 257 SvNV(&PL_sv_no);
c1939273 258 SvIV(&PL_sv_no);
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NC
259 SvIOK_on(&PL_sv_no);
260 SvNOK_on(&PL_sv_no);
34caed6d
DM
261 SvREADONLY_on(&PL_sv_no);
262 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
263
264 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 265 SvNV(&PL_sv_yes);
c1939273 266 SvIV(&PL_sv_yes);
34caed6d
DM
267 SvREADONLY_on(&PL_sv_yes);
268 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
269
270 SvREADONLY_on(&PL_sv_placeholder);
271 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
272
273 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 274#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 275 PL_pidstatus = newHV();
ca0c25f6 276#endif
79072805 277
396482e1 278 PL_rs = newSVpvs("\n");
dc92893f 279
cea2e8a9 280 init_stacks();
79072805 281
748a9306 282 init_ids();
a5f75d66 283
312caa8e 284 JMPENV_BOOTSTRAP;
f86702cc
PP
285 STATUS_ALL_SUCCESS;
286
0672f40e 287 init_i18nl10n(1);
36477c24 288 SET_NUMERIC_STANDARD();
0b5b802d 289
ab821d7f 290#if defined(LOCAL_PATCH_COUNT)
3280af22 291 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
292#endif
293
52853b95
GS
294#ifdef HAVE_INTERP_INTERN
295 sys_intern_init();
296#endif
297
3a1ee7e8 298 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 299
3280af22
NIS
300 PL_fdpid = newAV(); /* for remembering popen pids by fd */
301 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 302 PL_errors = newSVpvs("");
76f68e9b
MHM
303 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
304 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
305 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 306#ifdef USE_ITHREADS
402d2eb1
NC
307 /* First entry is a list of empty elements. It needs to be initialised
308 else all hell breaks loose in S_find_uninit_var(). */
309 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 310 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 311#endif
e5dd39fc 312#ifdef USE_REENTRANT_API
59bd0823 313 Perl_reentrant_init(aTHX);
e5dd39fc 314#endif
3d47000e
AB
315
316 /* Note that strtab is a rather special HV. Assumptions are made
317 about not iterating on it, and not adding tie magic to it.
318 It is properly deallocated in perl_destruct() */
319 PL_strtab = newHV();
320
3d47000e
AB
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
323
0631ea03
AB
324#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
325 _dyld_lookup_and_bind
326 ("__environ", (unsigned long *) &environ_pointer, NULL);
327#endif /* environ */
328
2f42fcb0
JH
329#ifndef PERL_MICRO
330# ifdef USE_ENVIRON_ARRAY
0631ea03 331 PL_origenviron = environ;
2f42fcb0 332# endif
0631ea03
AB
333#endif
334
5311654c 335 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 336 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
337 * BeOS has those, but returns the wrong value.
338 * The HZ if not originally defined has been by now
339 * been defined as CLK_TCK, if available. */
dbc1d986 340#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
341 PL_clocktick = sysconf(_SC_CLK_TCK);
342 if (PL_clocktick <= 0)
343#endif
344 PL_clocktick = HZ;
345
081fc587
AB
346 PL_stashcache = newHV();
347
e8e3635e 348 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 349 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 350
27da23d5
JH
351#ifdef HAS_MMAP
352 if (!PL_mmap_page_size) {
353#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
354 {
355 SETERRNO(0, SS_NORMAL);
356# ifdef _SC_PAGESIZE
357 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
358# else
359 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
360# endif
361 if ((long) PL_mmap_page_size < 0) {
362 if (errno) {
44f8325f 363 SV * const error = ERRSV;
d4c19fe8 364 SvUPGRADE(error, SVt_PV);
0510663f 365 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
366 }
367 else
368 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
369 }
370 }
371#else
372# ifdef HAS_GETPAGESIZE
373 PL_mmap_page_size = getpagesize();
374# else
375# if defined(I_SYS_PARAM) && defined(PAGESIZE)
376 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
377# endif
378# endif
379#endif
380 if (PL_mmap_page_size <= 0)
381 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
382 (IV) PL_mmap_page_size);
383 }
384#endif /* HAS_MMAP */
385
386#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
387 PL_timesbase.tms_utime = 0;
388 PL_timesbase.tms_stime = 0;
389 PL_timesbase.tms_cutime = 0;
390 PL_timesbase.tms_cstime = 0;
391#endif
392
7d113631
NC
393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
394
a3e6e81e 395 PL_registered_mros = newHV();
9e169432
NC
396 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
397 HvMAX(PL_registered_mros) = 0;
a3e6e81e 398
8990e307 399 ENTER;
79072805
LW
400}
401
954c1994 402/*
62375a60
NIS
403=for apidoc nothreadhook
404
405Stub that provides thread hook for perl_destruct when there are
406no threads.
407
408=cut
409*/
410
411int
4e9e3734 412Perl_nothreadhook(pTHX)
62375a60 413{
96a5add6 414 PERL_UNUSED_CONTEXT;
62375a60
NIS
415 return 0;
416}
417
41e4abd8
NC
418#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419void
420Perl_dump_sv_child(pTHX_ SV *sv)
421{
422 ssize_t got;
bf357333
NC
423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
425 union control_un control;
426 struct msghdr msg;
808ad2d0 427 struct iovec vec[2];
bf357333 428 struct cmsghdr *cmptr;
808ad2d0
NC
429 int returned_errno;
430 unsigned char buffer[256];
41e4abd8 431
7918f24d
NC
432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433
bf357333 434 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
435 return;
436
437 PerlIO_flush(Perl_debug_log);
438
bf357333
NC
439 /* All these shenanigans are to pass a file descriptor over to our child for
440 it to dump out to. We can't let it hold open the file descriptor when it
441 forks, as the file descriptor it will dump to can turn out to be one end
442 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 443 be open, the wait would be forever.) */
bf357333
NC
444
445 msg.msg_control = control.control;
446 msg.msg_controllen = sizeof(control.control);
447 /* We're a connected socket so we don't need a destination */
448 msg.msg_name = NULL;
449 msg.msg_namelen = 0;
450 msg.msg_iov = vec;
808ad2d0 451 msg.msg_iovlen = 1;
bf357333
NC
452
453 cmptr = CMSG_FIRSTHDR(&msg);
454 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
455 cmptr->cmsg_level = SOL_SOCKET;
456 cmptr->cmsg_type = SCM_RIGHTS;
457 *((int *)CMSG_DATA(cmptr)) = 1;
458
459 vec[0].iov_base = (void*)&sv;
460 vec[0].iov_len = sizeof(sv);
461 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
462
463 if(got < 0) {
bf357333 464 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
465 abort();
466 }
bf357333
NC
467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
469 abort();
470 }
471
808ad2d0
NC
472 /* Return protocol is
473 int: errno value
474 unsigned char: length of location string (0 for empty)
475 unsigned char*: string (not terminated)
476 */
477 vec[0].iov_base = (void*)&returned_errno;
478 vec[0].iov_len = sizeof(returned_errno);
479 vec[1].iov_base = buffer;
480 vec[1].iov_len = 1;
481
482 got = readv(sock, vec, 2);
41e4abd8
NC
483
484 if(got < 0) {
485 perror("Debug leaking scalars parent read failed");
808ad2d0 486 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
487 abort();
488 }
808ad2d0 489 if(got < sizeof(returned_errno) + 1) {
41e4abd8 490 perror("Debug leaking scalars parent short read");
808ad2d0 491 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
492 abort();
493 }
494
808ad2d0
NC
495 if (*buffer) {
496 got = read(sock, buffer + 1, *buffer);
497 if(got < 0) {
498 perror("Debug leaking scalars parent read 2 failed");
499 PerlIO_flush(PerlIO_stderr());
500 abort();
501 }
502
503 if(got < *buffer) {
504 perror("Debug leaking scalars parent short read 2");
505 PerlIO_flush(PerlIO_stderr());
506 abort();
507 }
508 }
509
510 if (returned_errno || *buffer) {
511 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
512 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
513 returned_errno, strerror(returned_errno));
41e4abd8
NC
514 }
515}
516#endif
517
62375a60 518/*
954c1994
GS
519=for apidoc perl_destruct
520
521Shuts down a Perl interpreter. See L<perlembed>.
522
523=cut
524*/
525
31d77e54 526int
0cb96387 527perl_destruct(pTHXx)
79072805 528{
27da23d5 529 dVAR;
be2ea8ed 530 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 531 HV *hv;
2aa47728 532#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
533 pid_t child;
534#endif
8990e307 535
7918f24d
NC
536 PERL_ARGS_ASSERT_PERL_DESTRUCT;
537#ifndef MULTIPLICITY
ed6c66dd 538 PERL_UNUSED_ARG(my_perl);
7918f24d 539#endif
9d4ba2ae 540
3d22c4f0
GG
541 assert(PL_scopestack_ix == 1);
542
7766f137
GS
543 /* wait for all pseudo-forked children to finish */
544 PERL_WAIT_FOR_CHILDREN;
545
3280af22 546 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
547#ifdef DEBUGGING
548 {
9d4ba2ae
AL
549 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
550 if (s) {
e1ec3a88 551 const int i = atoi(s);
5f05dabc
PP
552 if (destruct_level < i)
553 destruct_level = i;
554 }
4633a7c4
LW
555 }
556#endif
557
27da23d5 558 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
559 dJMPENV;
560 int x = 0;
561
562 JMPENV_PUSH(x);
1b6737cc 563 PERL_UNUSED_VAR(x);
9ebf26ad 564 if (PL_endav && !PL_minus_c) {
ca7b837b 565 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 566 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 567 }
f3faeb53 568 JMPENV_POP;
26f423df 569 }
f3faeb53 570 LEAVE;
a0d0e21e 571 FREETMPS;
3d22c4f0 572 assert(PL_scopestack_ix == 0);
a0d0e21e 573
e00b64d4 574 /* Need to flush since END blocks can produce output */
f13a2bc0 575 my_fflush_all();
e00b64d4 576
16c91539 577 if (PL_threadhook(aTHX)) {
62375a60 578 /* Threads hook has vetoed further cleanup */
c301d606 579 PL_veto_cleanup = TRUE;
37038d91 580 return STATUS_EXIT;
62375a60
NIS
581 }
582
2aa47728
NC
583#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
584 if (destruct_level != 0) {
585 /* Fork here to create a child. Our child's job is to preserve the
586 state of scalars prior to destruction, so that we can instruct it
587 to dump any scalars that we later find have leaked.
588 There's no subtlety in this code - it assumes POSIX, and it doesn't
589 fail gracefully */
590 int fd[2];
591
592 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
593 perror("Debug leaking scalars socketpair failed");
594 abort();
595 }
596
597 child = fork();
598 if(child == -1) {
599 perror("Debug leaking scalars fork failed");
600 abort();
601 }
602 if (!child) {
603 /* We are the child */
3125a5a4
NC
604 const int sock = fd[1];
605 const int debug_fd = PerlIO_fileno(Perl_debug_log);
606 int f;
808ad2d0
NC
607 const char *where;
608 /* Our success message is an integer 0, and a char 0 */
b61433a9 609 static const char success[sizeof(int) + 1] = {0};
3125a5a4 610
2aa47728 611 close(fd[0]);
2aa47728 612
3125a5a4
NC
613 /* We need to close all other file descriptors otherwise we end up
614 with interesting hangs, where the parent closes its end of a
615 pipe, and sits waiting for (another) child to terminate. Only
616 that child never terminates, because it never gets EOF, because
bf357333
NC
617 we also have the far end of the pipe open. We even need to
618 close the debugging fd, because sometimes it happens to be one
619 end of a pipe, and a process is waiting on the other end for
620 EOF. Normally it would be closed at some point earlier in
621 destruction, but if we happen to cause the pipe to remain open,
622 EOF never occurs, and we get an infinite hang. Hence all the
623 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
624
625 f = sysconf(_SC_OPEN_MAX);
626 if(f < 0) {
808ad2d0
NC
627 where = "sysconf failed";
628 goto abort;
3125a5a4
NC
629 }
630 while (f--) {
631 if (f == sock)
632 continue;
3125a5a4
NC
633 close(f);
634 }
635
2aa47728
NC
636 while (1) {
637 SV *target;
bf357333
NC
638 union control_un control;
639 struct msghdr msg;
640 struct iovec vec[1];
641 struct cmsghdr *cmptr;
642 ssize_t got;
643 int got_fd;
644
645 msg.msg_control = control.control;
646 msg.msg_controllen = sizeof(control.control);
647 /* We're a connected socket so we don't need a source */
648 msg.msg_name = NULL;
649 msg.msg_namelen = 0;
650 msg.msg_iov = vec;
651 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
652
653 vec[0].iov_base = (void*)&target;
654 vec[0].iov_len = sizeof(target);
655
656 got = recvmsg(sock, &msg, 0);
2aa47728
NC
657
658 if(got == 0)
659 break;
660 if(got < 0) {
808ad2d0
NC
661 where = "recv failed";
662 goto abort;
2aa47728
NC
663 }
664 if(got < sizeof(target)) {
808ad2d0
NC
665 where = "short recv";
666 goto abort;
2aa47728 667 }
bf357333 668
808ad2d0
NC
669 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
670 where = "no cmsg";
671 goto abort;
672 }
673 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
674 where = "wrong cmsg_len";
675 goto abort;
676 }
677 if(cmptr->cmsg_level != SOL_SOCKET) {
678 where = "wrong cmsg_level";
679 goto abort;
680 }
681 if(cmptr->cmsg_type != SCM_RIGHTS) {
682 where = "wrong cmsg_type";
683 goto abort;
684 }
bf357333
NC
685
686 got_fd = *(int*)CMSG_DATA(cmptr);
687 /* For our last little bit of trickery, put the file descriptor
688 back into Perl_debug_log, as if we never actually closed it
689 */
808ad2d0
NC
690 if(got_fd != debug_fd) {
691 if (dup2(got_fd, debug_fd) == -1) {
692 where = "dup2";
693 goto abort;
694 }
695 }
2aa47728 696 sv_dump(target);
bf357333 697
2aa47728
NC
698 PerlIO_flush(Perl_debug_log);
699
808ad2d0 700 got = write(sock, &success, sizeof(success));
2aa47728
NC
701
702 if(got < 0) {
808ad2d0
NC
703 where = "write failed";
704 goto abort;
2aa47728 705 }
808ad2d0
NC
706 if(got < sizeof(success)) {
707 where = "short write";
708 goto abort;
2aa47728
NC
709 }
710 }
711 _exit(0);
808ad2d0
NC
712 abort:
713 {
714 int send_errno = errno;
715 unsigned char length = (unsigned char) strlen(where);
716 struct iovec failure[3] = {
717 {(void*)&send_errno, sizeof(send_errno)},
718 {&length, 1},
719 {(void*)where, length}
720 };
721 int got = writev(sock, failure, 3);
722 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
723 in the parent if we try to read from the socketpair after the
724 child has exited, even if there was data to read.
725 So sleep a bit to give the parent a fighting chance of
726 reading the data. */
727 sleep(2);
728 _exit((got == -1) ? errno : 0);
729 }
bf357333 730 /* End of child. */
2aa47728 731 }
41e4abd8 732 PL_dumper_fd = fd[0];
2aa47728
NC
733 close(fd[1]);
734 }
735#endif
736
ff0cee69
PP
737 /* We must account for everything. */
738
739 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
740 /* Do this now, because destroying ops can cause new SVs to be generated
741 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
742 PL_curcop to point to a valid op from which the filename structure
743 member is copied. */
744 PL_curcop = &PL_compiling;
3280af22 745 if (PL_main_root) {
4e380990
DM
746 /* ensure comppad/curpad to refer to main's pad */
747 if (CvPADLIST(PL_main_cv)) {
748 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
749 }
3280af22 750 op_free(PL_main_root);
5f66b61c 751 PL_main_root = NULL;
a0d0e21e 752 }
5f66b61c 753 PL_main_start = NULL;
aac9d523
DM
754 /* note that PL_main_cv isn't usually actually freed at this point,
755 * due to the CvOUTSIDE refs from subs compiled within it. It will
756 * get freed once all the subs are freed in sv_clean_all(), for
757 * destruct_level > 0 */
3280af22 758 SvREFCNT_dec(PL_main_cv);
601f1833 759 PL_main_cv = NULL;
ca7b837b 760 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 761
13621cfb
NIS
762 /* Tell PerlIO we are about to tear things apart in case
763 we have layers which are using resources that should
764 be cleaned up now.
765 */
766
767 PerlIO_destruct(aTHX);
768
3280af22 769 if (PL_sv_objcount) {
a0d0e21e
LW
770 /*
771 * Try to destruct global references. We do this first so that the
772 * destructors and destructees still exist. Some sv's might remain.
773 * Non-referenced objects are on their own.
774 */
a0d0e21e 775 sv_clean_objs();
bf9cdc68 776 PL_sv_objcount = 0;
8990e307
LW
777 }
778
5cd24f17 779 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 780 SvREFCNT_dec(PL_warnhook);
a0714e2c 781 PL_warnhook = NULL;
3280af22 782 SvREFCNT_dec(PL_diehook);
a0714e2c 783 PL_diehook = NULL;
5cd24f17 784
4b556e6c 785 /* call exit list functions */
3280af22 786 while (PL_exitlistlen-- > 0)
acfe0abc 787 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 788
3280af22 789 Safefree(PL_exitlist);
4b556e6c 790
1c4916e5
CB
791 PL_exitlist = NULL;
792 PL_exitlistlen = 0;
793
a3e6e81e
NC
794 SvREFCNT_dec(PL_registered_mros);
795
551a8b83 796 /* jettison our possibly duplicated environment */
4b647fb0
DM
797 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
798 * so we certainly shouldn't free it here
799 */
2f42fcb0 800#ifndef PERL_MICRO
4b647fb0 801#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 802 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
803#ifdef USE_ITHREADS
804 /* only main thread can free environ[0] contents */
805 && PL_curinterp == aTHX
806#endif
807 )
808 {
551a8b83
JH
809 I32 i;
810
811 for (i = 0; environ[i]; i++)
4b420006 812 safesysfree(environ[i]);
0631ea03 813
4b420006
JH
814 /* Must use safesysfree() when working with environ. */
815 safesysfree(environ);
551a8b83
JH
816
817 environ = PL_origenviron;
818 }
819#endif
2f42fcb0 820#endif /* !PERL_MICRO */
551a8b83 821
30985c42
JH
822 if (destruct_level == 0) {
823
824 DEBUG_P(debprofdump());
825
826#if defined(PERLIO_LAYERS)
827 /* No more IO - including error messages ! */
828 PerlIO_cleanup(aTHX);
829#endif
830
831 CopFILE_free(&PL_compiling);
832 CopSTASH_free(&PL_compiling);
833
834 /* The exit() function will do everything that needs doing. */
835 return STATUS_EXIT;
836 }
837
5f8cb046
DM
838#ifdef USE_ITHREADS
839 /* the syntax tree is shared between clones
840 * so op_free(PL_main_root) only ReREFCNT_dec's
841 * REGEXPs in the parent interpreter
842 * we need to manually ReREFCNT_dec for the clones
843 */
5f8cb046 844 SvREFCNT_dec(PL_regex_padav);
7d49f689 845 PL_regex_padav = NULL;
5f8cb046
DM
846 PL_regex_pad = NULL;
847#endif
848
ad64d0ec 849 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
850 PL_stashcache = NULL;
851
5f05dabc
PP
852 /* loosen bonds of global variables */
853
2f9285f8
DM
854 /* XXX can PL_parser still be non-null here? */
855 if(PL_parser && PL_parser->rsfp) {
856 (void)PerlIO_close(PL_parser->rsfp);
857 PL_parser->rsfp = NULL;
8ebc5c01
PP
858 }
859
84386e14
RGS
860 if (PL_minus_F) {
861 Safefree(PL_splitstr);
862 PL_splitstr = NULL;
863 }
864
8ebc5c01 865 /* switches */
3280af22
NIS
866 PL_minus_n = FALSE;
867 PL_minus_p = FALSE;
868 PL_minus_l = FALSE;
869 PL_minus_a = FALSE;
870 PL_minus_F = FALSE;
871 PL_doswitches = FALSE;
599cee73 872 PL_dowarn = G_WARN_OFF;
3280af22 873 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
874 PL_unsafe = FALSE;
875
876 Safefree(PL_inplace);
bd61b366 877 PL_inplace = NULL;
a7cb1f99 878 SvREFCNT_dec(PL_patchlevel);
1e8125c6 879 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
880
881 if (PL_e_script) {
882 SvREFCNT_dec(PL_e_script);
a0714e2c 883 PL_e_script = NULL;
8ebc5c01
PP
884 }
885
bf9cdc68
RG
886 PL_perldb = 0;
887
8ebc5c01
PP
888 /* magical thingies */
889
e23d9e2f
CS
890 SvREFCNT_dec(PL_ofsgv); /* *, */
891 PL_ofsgv = NULL;
5f05dabc 892
7889fe52 893 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 894 PL_ors_sv = NULL;
8ebc5c01 895
3280af22 896 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 897 PL_rs = NULL;
dc92893f 898
d33b2eba 899 Safefree(PL_osname); /* $^O */
bd61b366 900 PL_osname = NULL;
5f05dabc 901
3280af22 902 SvREFCNT_dec(PL_statname);
a0714e2c
SS
903 PL_statname = NULL;
904 PL_statgv = NULL;
5f05dabc 905
8ebc5c01
PP
906 /* defgv, aka *_ should be taken care of elsewhere */
907
7d5ea4e7
GS
908 /* float buffer */
909 Safefree(PL_efloatbuf);
bd61b366 910 PL_efloatbuf = NULL;
7d5ea4e7
GS
911 PL_efloatsize = 0;
912
8ebc5c01 913 /* startup and shutdown function lists */
3280af22 914 SvREFCNT_dec(PL_beginav);
5a837c8f 915 SvREFCNT_dec(PL_beginav_save);
3280af22 916 SvREFCNT_dec(PL_endav);
7d30b5c4 917 SvREFCNT_dec(PL_checkav);
ece599bd 918 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
919 SvREFCNT_dec(PL_unitcheckav);
920 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 921 SvREFCNT_dec(PL_initav);
7d49f689
NC
922 PL_beginav = NULL;
923 PL_beginav_save = NULL;
924 PL_endav = NULL;
925 PL_checkav = NULL;
926 PL_checkav_save = NULL;
3c10abe3
AG
927 PL_unitcheckav = NULL;
928 PL_unitcheckav_save = NULL;
7d49f689 929 PL_initav = NULL;
5618dfe8 930
8ebc5c01 931 /* shortcuts just get cleared */
a0714e2c
SS
932 PL_envgv = NULL;
933 PL_incgv = NULL;
934 PL_hintgv = NULL;
935 PL_errgv = NULL;
936 PL_argvgv = NULL;
937 PL_argvoutgv = NULL;
938 PL_stdingv = NULL;
939 PL_stderrgv = NULL;
940 PL_last_in_gv = NULL;
941 PL_replgv = NULL;
942 PL_DBgv = NULL;
943 PL_DBline = NULL;
944 PL_DBsub = NULL;
945 PL_DBsingle = NULL;
946 PL_DBtrace = NULL;
947 PL_DBsignal = NULL;
601f1833 948 PL_DBcv = NULL;
7d49f689 949 PL_dbargs = NULL;
5c284bb0 950 PL_debstash = NULL;
8ebc5c01 951
7a1c5554 952 SvREFCNT_dec(PL_argvout_stack);
7d49f689 953 PL_argvout_stack = NULL;
8ebc5c01 954
5c831c24 955 SvREFCNT_dec(PL_modglobal);
5c284bb0 956 PL_modglobal = NULL;
5c831c24 957 SvREFCNT_dec(PL_preambleav);
7d49f689 958 PL_preambleav = NULL;
5c831c24 959 SvREFCNT_dec(PL_subname);
a0714e2c 960 PL_subname = NULL;
ca0c25f6 961#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 962 SvREFCNT_dec(PL_pidstatus);
5c284bb0 963 PL_pidstatus = NULL;
ca0c25f6 964#endif
5c831c24 965 SvREFCNT_dec(PL_toptarget);
a0714e2c 966 PL_toptarget = NULL;
5c831c24 967 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
968 PL_bodytarget = NULL;
969 PL_formtarget = NULL;
5c831c24 970
d33b2eba 971 /* free locale stuff */
b9582b6a 972#ifdef USE_LOCALE_COLLATE
d33b2eba 973 Safefree(PL_collation_name);
bd61b366 974 PL_collation_name = NULL;
b9582b6a 975#endif
d33b2eba 976
b9582b6a 977#ifdef USE_LOCALE_NUMERIC
d33b2eba 978 Safefree(PL_numeric_name);
bd61b366 979 PL_numeric_name = NULL;
a453c169 980 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 981 PL_numeric_radix_sv = NULL;
b9582b6a 982#endif
d33b2eba 983
5c831c24
GS
984 /* clear utf8 character classes */
985 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
986 SvREFCNT_dec(PL_utf8_alpha);
987 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
988 SvREFCNT_dec(PL_utf8_graph);
989 SvREFCNT_dec(PL_utf8_digit);
990 SvREFCNT_dec(PL_utf8_upper);
991 SvREFCNT_dec(PL_utf8_lower);
992 SvREFCNT_dec(PL_utf8_print);
993 SvREFCNT_dec(PL_utf8_punct);
994 SvREFCNT_dec(PL_utf8_xdigit);
995 SvREFCNT_dec(PL_utf8_mark);
996 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 997 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 998 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 999 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1000 SvREFCNT_dec(PL_utf8_idstart);
1001 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1002 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1003 PL_utf8_alnum = NULL;
a0714e2c
SS
1004 PL_utf8_alpha = NULL;
1005 PL_utf8_space = NULL;
a0714e2c
SS
1006 PL_utf8_graph = NULL;
1007 PL_utf8_digit = NULL;
1008 PL_utf8_upper = NULL;
1009 PL_utf8_lower = NULL;
1010 PL_utf8_print = NULL;
1011 PL_utf8_punct = NULL;
1012 PL_utf8_xdigit = NULL;
1013 PL_utf8_mark = NULL;
1014 PL_utf8_toupper = NULL;
1015 PL_utf8_totitle = NULL;
1016 PL_utf8_tolower = NULL;
1017 PL_utf8_tofold = NULL;
1018 PL_utf8_idstart = NULL;
1019 PL_utf8_idcont = NULL;
2726813d 1020 PL_utf8_foldclosures = NULL;
5c831c24 1021
971a9dd3 1022 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1023 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1024 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1025 cophh_free(CopHINTHASH_get(&PL_compiling));
1026 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1027 CopFILE_free(&PL_compiling);
1028 CopSTASH_free(&PL_compiling);
5c831c24 1029
a0d0e21e 1030 /* Prepare to destruct main symbol table. */
5f05dabc 1031
3280af22 1032 hv = PL_defstash;
ca556bcd
DM
1033 /* break ref loop *:: <=> %:: */
1034 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1035 PL_defstash = 0;
a0d0e21e 1036 SvREFCNT_dec(hv);
5c831c24 1037 SvREFCNT_dec(PL_curstname);
a0714e2c 1038 PL_curstname = NULL;
a0d0e21e 1039
5a844595
GS
1040 /* clear queued errors */
1041 SvREFCNT_dec(PL_errors);
a0714e2c 1042 PL_errors = NULL;
5a844595 1043
dd69841b
BB
1044 SvREFCNT_dec(PL_isarev);
1045
a0d0e21e 1046 FREETMPS;
9b387841 1047 if (destruct_level >= 2) {
3280af22 1048 if (PL_scopestack_ix != 0)
9b387841
NC
1049 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1050 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1051 (long)PL_scopestack_ix);
3280af22 1052 if (PL_savestack_ix != 0)
9b387841
NC
1053 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1054 "Unbalanced saves: %ld more saves than restores\n",
1055 (long)PL_savestack_ix);
3280af22 1056 if (PL_tmps_floor != -1)
9b387841
NC
1057 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1058 (long)PL_tmps_floor + 1);
a0d0e21e 1059 if (cxstack_ix != -1)
9b387841
NC
1060 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1061 (long)cxstack_ix + 1);
a0d0e21e 1062 }
8990e307 1063
776df701 1064#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1065 /* the entries in this list are allocated via SV PVX's, so get freed
1066 * in sv_clean_all */
1067 Safefree(PL_my_cxt_list);
776df701 1068#endif
57bb2458 1069
8990e307 1070 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1071
1072 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1073 while (sv_clean_all() > 2)
5226ed68
JH
1074 ;
1075
d4777f27
GS
1076 AvREAL_off(PL_fdpid); /* no surviving entries */
1077 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1078 PL_fdpid = NULL;
d33b2eba 1079
6c644e78
GS
1080#ifdef HAVE_INTERP_INTERN
1081 sys_intern_clear();
1082#endif
1083
6e72f9df
PP
1084 /* Destruct the global string table. */
1085 {
1086 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1087 * so that sv_free() won't fail on them.
80459961
NC
1088 * Now that the global string table is using a single hunk of memory
1089 * for both HE and HEK, we either need to explicitly unshare it the
1090 * correct way, or actually free things here.
6e72f9df 1091 */
80459961
NC
1092 I32 riter = 0;
1093 const I32 max = HvMAX(PL_strtab);
c4420975 1094 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1095 HE *hent = array[0];
1096
6e72f9df 1097 for (;;) {
0453d815 1098 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1099 HE * const next = HeNEXT(hent);
9014280d 1100 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1101 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1102 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1103 Safefree(hent);
1104 hent = next;
6e72f9df
PP
1105 }
1106 if (!hent) {
1107 if (++riter > max)
1108 break;
1109 hent = array[riter];
1110 }
1111 }
80459961
NC
1112
1113 Safefree(array);
1114 HvARRAY(PL_strtab) = 0;
1115 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1116 }
3280af22 1117 SvREFCNT_dec(PL_strtab);
6e72f9df 1118
e652bb2f 1119#ifdef USE_ITHREADS
c21d1a0f 1120 /* free the pointer tables used for cloning */
a0739874 1121 ptr_table_free(PL_ptr_table);
bf9cdc68 1122 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1123#endif
a0739874 1124
d33b2eba
GS
1125 /* free special SVs */
1126
1127 SvREFCNT(&PL_sv_yes) = 0;
1128 sv_clear(&PL_sv_yes);
1129 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1130 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1131
1132 SvREFCNT(&PL_sv_no) = 0;
1133 sv_clear(&PL_sv_no);
1134 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1135 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1136
9f375a43
DM
1137 {
1138 int i;
1139 for (i=0; i<=2; i++) {
1140 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1141 sv_clear(PERL_DEBUG_PAD(i));
1142 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1143 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1144 }
1145 }
1146
0453d815 1147 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1148 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1149
eba0f806
DM
1150#ifdef DEBUG_LEAKING_SCALARS
1151 if (PL_sv_count != 0) {
1152 SV* sva;
1153 SV* sv;
1154 register SV* svend;
1155
ad64d0ec 1156 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1157 svend = &sva[SvREFCNT(sva)];
1158 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1159 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1160 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1161 " flags=0x%"UVxf
fd0854ff 1162 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1163 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1164 "serial %"UVuf"\n",
574b8821
NC
1165 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1166 pTHX__VALUE,
fd0854ff
DM
1167 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1168 sv->sv_debug_line,
1169 sv->sv_debug_inpad ? "for" : "by",
1170 sv->sv_debug_optype ?
1171 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1172 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1173 sv->sv_debug_serial
fd0854ff 1174 );
2aa47728 1175#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1176 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1177#endif
eba0f806
DM
1178 }
1179 }
1180 }
1181 }
2aa47728
NC
1182#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1183 {
1184 int status;
1185 fd_set rset;
1186 /* Wait for up to 4 seconds for child to terminate.
1187 This seems to be the least effort way of timing out on reaping
1188 its exit status. */
1189 struct timeval waitfor = {4, 0};
41e4abd8 1190 int sock = PL_dumper_fd;
2aa47728
NC
1191
1192 shutdown(sock, 1);
1193 FD_ZERO(&rset);
1194 FD_SET(sock, &rset);
1195 select(sock + 1, &rset, NULL, NULL, &waitfor);
1196 waitpid(child, &status, WNOHANG);
1197 close(sock);
1198 }
1199#endif
eba0f806 1200#endif
77abb4c6
NC
1201#ifdef DEBUG_LEAKING_SCALARS_ABORT
1202 if (PL_sv_count)
1203 abort();
1204#endif
bf9cdc68 1205 PL_sv_count = 0;
eba0f806 1206
f1fac472
NC
1207#ifdef PERL_DEBUG_READONLY_OPS
1208 free(PL_slabs);
1209 PL_slabs = NULL;
1210 PL_slab_count = 0;
1211#endif
eba0f806 1212
56a2bab7 1213#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1214 /* No more IO - including error messages ! */
1215 PerlIO_cleanup(aTHX);
1216#endif
1217
9f4bd222 1218 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1219 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1220 for no arg - and will try and SvREFCNT_dec it.
1221 */
1222 SvREFCNT(&PL_sv_undef) = 0;
1223 SvREADONLY_off(&PL_sv_undef);
1224
3280af22 1225 Safefree(PL_origfilename);
bd61b366 1226 PL_origfilename = NULL;
3280af22 1227 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1228 PL_reg_start_tmp = (char**)NULL;
1229 PL_reg_start_tmpl = 0;
43c5f42d 1230 Safefree(PL_reg_curpm);
82ba1be6 1231 Safefree(PL_reg_poscache);
dd28f7bb 1232 free_tied_hv_pool();
3280af22 1233 Safefree(PL_op_mask);
cf36064f 1234 Safefree(PL_psig_name);
bf9cdc68 1235 PL_psig_name = (SV**)NULL;
d525a7b2 1236 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1237 {
1238 /* We need to NULL PL_psig_pend first, so that
1239 signal handlers know not to use it */
1240 int *psig_save = PL_psig_pend;
1241 PL_psig_pend = (int*)NULL;
1242 Safefree(psig_save);
1243 }
a0714e2c 1244 PL_formfeed = NULL;
6e72f9df 1245 nuke_stacks();
bf9cdc68
RG
1246 PL_tainting = FALSE;
1247 PL_taint_warn = FALSE;
3280af22 1248 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1249 PL_debug = 0;
ac27b0f5 1250
a0d0e21e 1251 DEBUG_P(debprofdump());
d33b2eba 1252
e5dd39fc 1253#ifdef USE_REENTRANT_API
10bc17b6 1254 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1255#endif
1256
612f20c3
GS
1257 sv_free_arenas();
1258
5d9a96ca
DM
1259 while (PL_regmatch_slab) {
1260 regmatch_slab *s = PL_regmatch_slab;
1261 PL_regmatch_slab = PL_regmatch_slab->next;
1262 Safefree(s);
1263 }
1264
fc36a67e
PP
1265 /* As the absolutely last thing, free the non-arena SV for mess() */
1266
3280af22 1267 if (PL_mess_sv) {
f350b448
NC
1268 /* we know that type == SVt_PVMG */
1269
9c63abab 1270 /* it could have accumulated taint magic */
f350b448
NC
1271 MAGIC* mg;
1272 MAGIC* moremagic;
1273 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1274 moremagic = mg->mg_moremagic;
1275 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1276 && mg->mg_len >= 0)
1277 Safefree(mg->mg_ptr);
1278 Safefree(mg);
9c63abab 1279 }
f350b448 1280
fc36a67e 1281 /* we know that type >= SVt_PV */
8bd4d4c5 1282 SvPV_free(PL_mess_sv);
3280af22
NIS
1283 Safefree(SvANY(PL_mess_sv));
1284 Safefree(PL_mess_sv);
a0714e2c 1285 PL_mess_sv = NULL;
fc36a67e 1286 }
37038d91 1287 return STATUS_EXIT;
79072805
LW
1288}
1289
954c1994
GS
1290/*
1291=for apidoc perl_free
1292
1293Releases a Perl interpreter. See L<perlembed>.
1294
1295=cut
1296*/
1297
79072805 1298void
0cb96387 1299perl_free(pTHXx)
79072805 1300{
5174512c
NC
1301 dVAR;
1302
7918f24d
NC
1303 PERL_ARGS_ASSERT_PERL_FREE;
1304
c301d606
DM
1305 if (PL_veto_cleanup)
1306 return;
1307
7cb608b5 1308#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1309 {
1310 /*
1311 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1312 * value as we're probably hunting memory leaks then
1313 */
1314 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1315 if (!s || atoi(s) == 0) {
4fd0a9b8 1316 const U32 old_debug = PL_debug;
55ef9aae
MHM
1317 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1318 thread at thread exit. */
4fd0a9b8
NC
1319 if (DEBUG_m_TEST) {
1320 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1321 "free this thread's memory\n");
1322 PL_debug &= ~ DEBUG_m_FLAG;
1323 }
55ef9aae
MHM
1324 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1325 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1326 PL_debug = old_debug;
55ef9aae
MHM
1327 }
1328 }
7cb608b5
NC
1329#endif
1330
acfe0abc 1331#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1332# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1333 {
acfe0abc 1334# ifdef NETWARE
7af12a34 1335 void *host = nw_internal_host;
acfe0abc 1336# else
7af12a34 1337 void *host = w32_internal_host;
acfe0abc 1338# endif
7af12a34 1339 PerlMem_free(aTHXx);
acfe0abc 1340# ifdef NETWARE
7af12a34 1341 nw_delete_internal_host(host);
acfe0abc 1342# else
7af12a34 1343 win32_delete_internal_host(host);
acfe0abc 1344# endif
7af12a34 1345 }
1c0ca838
GS
1346# else
1347 PerlMem_free(aTHXx);
1348# endif
acfe0abc
GS
1349#else
1350 PerlMem_free(aTHXx);
76e3520e 1351#endif
79072805
LW
1352}
1353
b7f7fff6 1354#if defined(USE_ITHREADS)
aebd1ac7
GA
1355/* provide destructors to clean up the thread key when libperl is unloaded */
1356#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1357
826955bd 1358#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1359#pragma fini "perl_fini"
666ad1ec
GA
1360#elif defined(__sun) && !defined(__GNUC__)
1361#pragma fini (perl_fini)
aebd1ac7
GA
1362#endif
1363
0dbb1585
AL
1364static void
1365#if defined(__GNUC__)
1366__attribute__((destructor))
aebd1ac7 1367#endif
de009b76 1368perl_fini(void)
aebd1ac7 1369{
27da23d5 1370 dVAR;
c301d606 1371 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1372 FREE_THREAD_KEY;
1373}
1374
1375#endif /* WIN32 */
1376#endif /* THREADS */
1377
4b556e6c 1378void
864dbfa3 1379Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1380{
97aff369 1381 dVAR;
3280af22
NIS
1382 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1383 PL_exitlist[PL_exitlistlen].fn = fn;
1384 PL_exitlist[PL_exitlistlen].ptr = ptr;
1385 ++PL_exitlistlen;
4b556e6c
JD
1386}
1387
b7975bdd
NC
1388STATIC void
1389S_set_caret_X(pTHX) {
97aff369 1390 dVAR;
fafc274c 1391 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1392 if (tmpgv) {
0f1723e1 1393 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1394#if defined(OS2)
1395 sv_setpv(caret_x, os2_execname(aTHX));
1396#else
2982a345
NC
1397# ifdef USE_KERN_PROC_PATHNAME
1398 size_t size = 0;
1399 int mib[4];
1400 mib[0] = CTL_KERN;
1401 mib[1] = KERN_PROC;
1402 mib[2] = KERN_PROC_PATHNAME;
1403 mib[3] = -1;
1404
1405 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1406 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1407 sv_grow(caret_x, size);
1408
1409 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1410 && size > 2) {
1411 SvPOK_only(caret_x);
1412 SvCUR_set(caret_x, size - 1);
1413 SvTAINT(caret_x);
1414 return;
1415 }
1416 }
ae60cb46
NC
1417# elif defined(USE_NSGETEXECUTABLEPATH)
1418 char buf[1];
1419 uint32_t size = sizeof(buf);
ae60cb46
NC
1420
1421 _NSGetExecutablePath(buf, &size);
1422 if (size < MAXPATHLEN * MAXPATHLEN) {
1423 sv_grow(caret_x, size);
1424 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1425 char *const tidied = realpath(SvPVX(caret_x), NULL);
1426 if (tidied) {
1427 sv_setpv(caret_x, tidied);
1428 free(tidied);
1429 } else {
1430 SvPOK_only(caret_x);
1431 SvCUR_set(caret_x, size);
1432 }
1433 return;
1434 }
1435 }
2982a345 1436# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1437 char buf[MAXPATHLEN];
1438 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1439
1440 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1441 includes a spurious NUL which will cause $^X to fail in system
1442 or backticks (this will prevent extensions from being built and
1443 many tests from working). readlink is not meant to add a NUL.
1444 Normal readlink works fine.
1445 */
1446 if (len > 0 && buf[len-1] == '\0') {
1447 len--;
1448 }
1449
1450 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1451 returning the text "unknown" from the readlink rather than the path
1452 to the executable (or returning an error from the readlink). Any
1453 valid path has a '/' in it somewhere, so use that to validate the
1454 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1455 */
1456 if (len > 0 && memchr(buf, '/', len)) {
1457 sv_setpvn(caret_x, buf, len);
82552a95 1458 return;
700dd4f8 1459 }
82552a95
NC
1460# endif
1461 /* Fallback to this: */
0f1723e1 1462 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1463#endif
b7975bdd
NC
1464 }
1465}
1466
954c1994
GS
1467/*
1468=for apidoc perl_parse
1469
1470Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1471
1472=cut
1473*/
1474
03d9f026
FC
1475#define SET_CURSTASH(newstash) \
1476 if (PL_curstash != newstash) { \
1477 SvREFCNT_dec(PL_curstash); \
1478 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1479 }
1480
79072805 1481int
0cb96387 1482perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1483{
27da23d5 1484 dVAR;
6224f72b 1485 I32 oldscope;
6224f72b 1486 int ret;
db36c5a1 1487 dJMPENV;
8d063cd8 1488
7918f24d
NC
1489 PERL_ARGS_ASSERT_PERL_PARSE;
1490#ifndef MULTIPLICITY
ed6c66dd 1491 PERL_UNUSED_ARG(my_perl);
7918f24d 1492#endif
9d4ba2ae 1493
b0891165
JH
1494#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1495 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1496 * This MUST be done before any hash stores or fetches take place.
486ec47a 1497 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1498 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1499 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1500 if (!PL_rehash_seed_set)
1501 PL_rehash_seed = get_hash_seed();
b0891165 1502 {
9d4ba2ae 1503 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1504
1b6737cc
AL
1505 if (s && (atoi(s) == 1))
1506 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1507 }
1508#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1509
3280af22 1510 PL_origargc = argc;
e2975953 1511 PL_origargv = argv;
a0d0e21e 1512
a2722ac9
GA
1513 if (PL_origalen != 0) {
1514 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1515 }
1516 else {
3cb9023d
JH
1517 /* Set PL_origalen be the sum of the contiguous argv[]
1518 * elements plus the size of the env in case that it is
e9137a8e 1519 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1520 * as the maximum modifiable length of $0. In the worst case
1521 * the area we are able to modify is limited to the size of
43c32782 1522 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1523 * --jhi */
e1ec3a88 1524 const char *s = NULL;
54bfe034 1525 int i;
1b6737cc 1526 const UV mask =
7d8e7db3 1527 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1528 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1529 const UV aligned =
43c32782
JH
1530 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1531
1532 /* See if all the arguments are contiguous in memory. Note
1533 * that 'contiguous' is a loose term because some platforms
1534 * align the argv[] and the envp[]. If the arguments look
1535 * like non-aligned, assume that they are 'strictly' or
1536 * 'traditionally' contiguous. If the arguments look like
1537 * aligned, we just check that they are within aligned
1538 * PTRSIZE bytes. As long as no system has something bizarre
1539 * like the argv[] interleaved with some other data, we are
1540 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1541 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1542 while (*s) s++;
1543 for (i = 1; i < PL_origargc; i++) {
1544 if ((PL_origargv[i] == s + 1
43c32782 1545#ifdef OS2
c8941eeb 1546 || PL_origargv[i] == s + 2
43c32782 1547#endif
c8941eeb
JH
1548 )
1549 ||
1550 (aligned &&
1551 (PL_origargv[i] > s &&
1552 PL_origargv[i] <=
1553 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1554 )
1555 {
1556 s = PL_origargv[i];
1557 while (*s) s++;
1558 }
1559 else
1560 break;
54bfe034 1561 }
54bfe034 1562 }
a4a109c2
JD
1563
1564#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1565 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1566 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1567 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1568 ||
1569 (aligned &&
1570 (PL_origenviron[0] > s &&
1571 PL_origenviron[0] <=
1572 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1573 )
1574 {
9d419b5f 1575#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1576 s = PL_origenviron[0];
1577 while (*s) s++;
1578#endif
bd61b366 1579 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1580 /* Force copy of environment. */
1581 for (i = 1; PL_origenviron[i]; i++) {
1582 if (PL_origenviron[i] == s + 1
1583 ||
1584 (aligned &&
1585 (PL_origenviron[i] > s &&
1586 PL_origenviron[i] <=
1587 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1588 )
1589 {
1590 s = PL_origenviron[i];
1591 while (*s) s++;
1592 }
1593 else
1594 break;
54bfe034 1595 }
43c32782 1596 }
54bfe034 1597 }
a4a109c2
JD
1598#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1599
2d2af554 1600 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1601 }
1602
3280af22 1603 if (PL_do_undump) {
a0d0e21e
LW
1604
1605 /* Come here if running an undumped a.out. */
1606
3280af22
NIS
1607 PL_origfilename = savepv(argv[0]);
1608 PL_do_undump = FALSE;
a0d0e21e 1609 cxstack_ix = -1; /* start label stack again */
748a9306 1610 init_ids();
b7975bdd
NC
1611 assert (!PL_tainted);
1612 TAINT;
1613 S_set_caret_X(aTHX);
1614 TAINT_NOT;
a0d0e21e
LW
1615 init_postdump_symbols(argc,argv,env);
1616 return 0;
1617 }
1618
3280af22 1619 if (PL_main_root) {
3280af22 1620 op_free(PL_main_root);
5f66b61c 1621 PL_main_root = NULL;
ff0cee69 1622 }
5f66b61c 1623 PL_main_start = NULL;
3280af22 1624 SvREFCNT_dec(PL_main_cv);
601f1833 1625 PL_main_cv = NULL;
79072805 1626
3280af22
NIS
1627 time(&PL_basetime);
1628 oldscope = PL_scopestack_ix;
599cee73 1629 PL_dowarn = G_WARN_OFF;
f86702cc 1630
14dd3ad8 1631 JMPENV_PUSH(ret);
6224f72b 1632 switch (ret) {
312caa8e 1633 case 0:
14dd3ad8 1634 parse_body(env,xsinit);
9ebf26ad 1635 if (PL_unitcheckav) {
3c10abe3 1636 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1637 }
1638 if (PL_checkav) {
ca7b837b 1639 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1640 call_list(oldscope, PL_checkav);
9ebf26ad 1641 }
14dd3ad8
GS
1642 ret = 0;
1643 break;
6224f72b
GS
1644 case 1:
1645 STATUS_ALL_FAILURE;
1646 /* FALL THROUGH */
1647 case 2:
1648 /* my_exit() was called */
3280af22 1649 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1650 LEAVE;
1651 FREETMPS;
03d9f026 1652 SET_CURSTASH(PL_defstash);
9ebf26ad 1653 if (PL_unitcheckav) {
3c10abe3 1654 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1655 }
1656 if (PL_checkav) {
ca7b837b 1657 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1658 call_list(oldscope, PL_checkav);
9ebf26ad 1659 }
37038d91 1660 ret = STATUS_EXIT;
14dd3ad8 1661 break;
6224f72b 1662 case 3:
bf49b057 1663 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1664 ret = 1;
1665 break;
6224f72b 1666 }
14dd3ad8
GS
1667 JMPENV_POP;
1668 return ret;
1669}
1670
4a5df386
NC
1671/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1672 miniperl, and we need to see those flags reflected in the values here. */
1673
1674/* What this returns is subject to change. Use the public interface in Config.
1675 */
1676static void
1677S_Internals_V(pTHX_ CV *cv)
1678{
1679 dXSARGS;
1680#ifdef LOCAL_PATCH_COUNT
1681 const int local_patch_count = LOCAL_PATCH_COUNT;
1682#else
1683 const int local_patch_count = 0;
1684#endif
2dc296d2 1685 const int entries = 3 + local_patch_count;
4a5df386
NC
1686 int i;
1687 static char non_bincompat_options[] =
1688# ifdef DEBUGGING
1689 " DEBUGGING"
1690# endif
17552284
NC
1691# ifdef HOMEGROWN_POSIX_SIGNALS
1692 " HOMEGROWN_POSIX_SIGNALS"
1693# endif
4a5df386 1694# ifdef NO_MATHOMS
0d311fbe 1695 " NO_MATHOMS"
4a5df386
NC
1696# endif
1697# ifdef PERL_DISABLE_PMC
1698 " PERL_DISABLE_PMC"
1699# endif
1700# ifdef PERL_DONT_CREATE_GVSV
1701 " PERL_DONT_CREATE_GVSV"
1702# endif
9a044a43
NC
1703# ifdef PERL_EXTERNAL_GLOB
1704 " PERL_EXTERNAL_GLOB"
1705# endif
4a5df386
NC
1706# ifdef PERL_IS_MINIPERL
1707 " PERL_IS_MINIPERL"
1708# endif
1709# ifdef PERL_MALLOC_WRAP
1710 " PERL_MALLOC_WRAP"
1711# endif
1712# ifdef PERL_MEM_LOG
1713 " PERL_MEM_LOG"
1714# endif
1715# ifdef PERL_MEM_LOG_NOIMPL
1716 " PERL_MEM_LOG_NOIMPL"
1717# endif
c3cf41ec
NC
1718# ifdef PERL_PRESERVE_IVUV
1719 " PERL_PRESERVE_IVUV"
1720# endif
4a5df386
NC
1721# ifdef PERL_USE_DEVEL
1722 " PERL_USE_DEVEL"
1723# endif
1724# ifdef PERL_USE_SAFE_PUTENV
1725 " PERL_USE_SAFE_PUTENV"
1726# endif
a3749cf3
NC
1727# ifdef UNLINK_ALL_VERSIONS
1728 " UNLINK_ALL_VERSIONS"
1729# endif
de618ee4
NC
1730# ifdef USE_ATTRIBUTES_FOR_PERLIO
1731 " USE_ATTRIBUTES_FOR_PERLIO"
1732# endif
4a5df386
NC
1733# ifdef USE_FAST_STDIO
1734 " USE_FAST_STDIO"
1735# endif
98548bdf
NC
1736# ifdef USE_LOCALE
1737 " USE_LOCALE"
1738# endif
98548bdf
NC
1739# ifdef USE_LOCALE_CTYPE
1740 " USE_LOCALE_CTYPE"
1741# endif
5a8d8935
NC
1742# ifdef USE_PERL_ATOF
1743 " USE_PERL_ATOF"
1744# endif
0d311fbe
NC
1745# ifdef USE_SITECUSTOMIZE
1746 " USE_SITECUSTOMIZE"
1747# endif
4a5df386
NC
1748 ;
1749 PERL_UNUSED_ARG(cv);
1750 PERL_UNUSED_ARG(items);
1751
1752 EXTEND(SP, entries);
1753
1754 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1755 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1756 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1757
1758#ifdef __DATE__
1759# ifdef __TIME__
1760 PUSHs(Perl_newSVpvn_flags(aTHX_
1761 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1762 SVs_TEMP));
1763# else
1764 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1765 SVs_TEMP));
1766# endif
1767#else
1768 PUSHs(&PL_sv_undef);
1769#endif
1770
4a5df386
NC
1771 for (i = 1; i <= local_patch_count; i++) {
1772 /* This will be an undef, if PL_localpatches[i] is NULL. */
1773 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1774 }
1775
1776 XSRETURN(entries);
1777}
1778
be71fc8f
NC
1779#define INCPUSH_UNSHIFT 0x01
1780#define INCPUSH_ADD_OLD_VERS 0x02
1781#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1782#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1783#define INCPUSH_NOT_BASEDIR 0x10
1784#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1785#define INCPUSH_ADD_SUB_DIRS \
1786 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1787
312caa8e 1788STATIC void *
14dd3ad8 1789S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1790{
27da23d5 1791 dVAR;
2f9285f8 1792 PerlIO *rsfp;
312caa8e 1793 int argc = PL_origargc;
8f42b153 1794 char **argv = PL_origargv;
e1ec3a88 1795 const char *scriptname = NULL;
312caa8e 1796 VOL bool dosearch = FALSE;
c7030b81 1797 register char c;
737c24fc 1798 bool doextract = FALSE;
bd61b366 1799 const char *cddir = NULL;
ab019eaa 1800#ifdef USE_SITECUSTOMIZE
20ef40cf 1801 bool minus_f = FALSE;
ab019eaa 1802#endif
009d90df 1803 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1804 bool add_read_e_script = FALSE;
009d90df 1805
ca7b837b 1806 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1807
009d90df 1808 SvGROW(linestr_sv, 80);
76f68e9b 1809 sv_setpvs(linestr_sv,"");
312caa8e 1810
6224f72b 1811 init_main_stash();
54310121 1812
c7030b81
NC
1813 {
1814 const char *s;
6224f72b
GS
1815 for (argc--,argv++; argc > 0; argc--,argv++) {
1816 if (argv[0][0] != '-' || !argv[0][1])
1817 break;
6224f72b
GS
1818 s = argv[0]+1;
1819 reswitch:
47f56822 1820 switch ((c = *s)) {
729a02f2 1821 case 'C':
1d5472a9
GS
1822#ifndef PERL_STRICT_CR
1823 case '\r':
1824#endif
6224f72b
GS
1825 case ' ':
1826 case '0':
1827 case 'F':
1828 case 'a':
1829 case 'c':
1830 case 'd':
1831 case 'D':
1832 case 'h':
1833 case 'i':
1834 case 'l':
1835 case 'M':
1836 case 'm':
1837 case 'n':
1838 case 'p':
1839 case 's':
1840 case 'u':
1841 case 'U':
1842 case 'v':
599cee73
PM
1843 case 'W':
1844 case 'X':
6224f72b 1845 case 'w':
97bd5664 1846 if ((s = moreswitches(s)))
6224f72b
GS
1847 goto reswitch;
1848 break;
33b78306 1849
1dbad523 1850 case 't':
22f7c9c9 1851 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1852 if( !PL_tainting ) {
1853 PL_taint_warn = TRUE;
1854 PL_tainting = TRUE;
1855 }
1856 s++;
1857 goto reswitch;
6224f72b 1858 case 'T':
22f7c9c9 1859 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1860 PL_tainting = TRUE;
317ea90d 1861 PL_taint_warn = FALSE;
6224f72b
GS
1862 s++;
1863 goto reswitch;
f86702cc 1864
bc9b29db
RH
1865 case 'E':
1866 PL_minus_E = TRUE;
1867 /* FALL THROUGH */
6224f72b 1868 case 'e':
f20b2998 1869 forbid_setid('e', FALSE);
3280af22 1870 if (!PL_e_script) {
396482e1 1871 PL_e_script = newSVpvs("");
5486870f 1872 add_read_e_script = TRUE;
6224f72b
GS
1873 }
1874 if (*++s)
3280af22 1875 sv_catpv(PL_e_script, s);
6224f72b 1876 else if (argv[1]) {
3280af22 1877 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1878 argc--,argv++;
1879 }
1880 else
47f56822 1881 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1882 sv_catpvs(PL_e_script, "\n");
6224f72b 1883 break;
afe37c7d 1884
20ef40cf 1885 case 'f':
f5542d3a 1886#ifdef USE_SITECUSTOMIZE
20ef40cf 1887 minus_f = TRUE;
f5542d3a 1888#endif
20ef40cf
GA
1889 s++;
1890 goto reswitch;
1891
6224f72b 1892 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1893 forbid_setid('I', FALSE);
bd61b366 1894 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1895 argc--,argv++;
1896 }
6224f72b 1897 if (s && *s) {
0df16ed7 1898 STRLEN len = strlen(s);
55b4bc1c 1899 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1900 }
1901 else
a67e862a 1902 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1903 break;
6224f72b 1904 case 'S':
f20b2998 1905 forbid_setid('S', FALSE);
6224f72b
GS
1906 dosearch = TRUE;
1907 s++;
1908 goto reswitch;
1909 case 'V':
7edfd0ef
NC
1910 {
1911 SV *opts_prog;
1912
7edfd0ef 1913 if (*++s != ':') {
37ca4a5b 1914 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1915 }
1916 else {
1917 ++s;
1918 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1919 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1920 0, s, 0);
1921 s += strlen(s);
1922 }
37ca4a5b 1923 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1924 /* don't look for script or read stdin */
1925 scriptname = BIT_BUCKET;
1926 goto reswitch;
6224f72b 1927 }
6224f72b 1928 case 'x':
737c24fc 1929 doextract = TRUE;
6224f72b 1930 s++;
304334da 1931 if (*s)
f4c556ac 1932 cddir = s;
6224f72b
GS
1933 break;
1934 case 0:
1935 break;
1936 case '-':
1937 if (!*++s || isSPACE(*s)) {
1938 argc--,argv++;
1939 goto switch_end;
1940 }
1941 /* catch use of gnu style long options */
1942 if (strEQ(s, "version")) {
dd374669 1943 s = (char *)"v";
6224f72b
GS
1944 goto reswitch;
1945 }
1946 if (strEQ(s, "help")) {
dd374669 1947 s = (char *)"h";
6224f72b
GS
1948 goto reswitch;
1949 }
1950 s--;
1951 /* FALL THROUGH */
1952 default:
cea2e8a9 1953 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1954 }
1955 }
c7030b81
NC
1956 }
1957
6224f72b 1958 switch_end:
54310121 1959
c7030b81
NC
1960 {
1961 char *s;
1962
f675dbe5
CB
1963 if (
1964#ifndef SECURE_INTERNAL_GETENV
1965 !PL_tainting &&
1966#endif
cf756827 1967 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1968 {
74288ac8
GS
1969 while (isSPACE(*s))
1970 s++;
317ea90d 1971 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1972 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1973 PL_tainting = TRUE;
317ea90d
MS
1974 PL_taint_warn = FALSE;
1975 }
74288ac8 1976 else {
bd61b366 1977 char *popt_copy = NULL;
74288ac8 1978 while (s && *s) {
54913509 1979 const char *d;
74288ac8
GS
1980 while (isSPACE(*s))
1981 s++;
1982 if (*s == '-') {
1983 s++;
1984 if (isSPACE(*s))
1985 continue;
1986 }
4ea8f8fb 1987 d = s;
74288ac8
GS
1988 if (!*s)
1989 break;
2b622f1a 1990 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1991 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1992 while (++s && *s) {
1993 if (isSPACE(*s)) {
cf756827 1994 if (!popt_copy) {
bfa6c418
NC
1995 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1996 s = popt_copy + (s - d);
1997 d = popt_copy;
cf756827 1998 }
4ea8f8fb
MS
1999 *s++ = '\0';
2000 break;
2001 }
2002 }
1c4db469 2003 if (*d == 't') {
317ea90d
MS
2004 if( !PL_tainting ) {
2005 PL_taint_warn = TRUE;
2006 PL_tainting = TRUE;
2007 }
1c4db469 2008 } else {
97bd5664 2009 moreswitches(d);
1c4db469 2010 }
6224f72b 2011 }
6224f72b
GS
2012 }
2013 }
c7030b81 2014 }
a0d0e21e 2015
c29067d7
CH
2016 /* Set $^X early so that it can be used for relocatable paths in @INC */
2017 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2018 assert (!PL_tainted);
2019 TAINT;
2020 S_set_caret_X(aTHX);
2021 TAINT_NOT;
2022
43c0c913 2023#if defined(USE_SITECUSTOMIZE)
20ef40cf 2024 if (!minus_f) {
43c0c913 2025 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2026 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2027 ie a q() operator with a NUL byte as a the delimiter. This avoids
2028 problems with pathnames containing (say) ' */
43c0c913
NC
2029# ifdef PERL_IS_MINIPERL
2030 AV *const inc = GvAV(PL_incgv);
2031 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2032
2033 if (inc0) {
2034 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2035 Perl_newSVpvf(aTHX_
fc81b718
NC
2036 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2037 0, *inc0, 0,
2038 0, *inc0, 0));
43c0c913
NC
2039 }
2040# else
2041 /* SITELIB_EXP is a function call on Win32. */
c29067d7
CH
2042 const char *const raw_sitelib = SITELIB_EXP;
2043 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2044 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2045 INCPUSH_CAN_RELOCATE);
2046 const char *const sitelib = SvPVX(sitelib_sv);
29a861e7 2047 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc 2048 Perl_newSVpvf(aTHX_
fc81b718
NC
2049 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2050 0, sitelib, 0,
2051 0, sitelib, 0));
c29067d7
CH
2052 assert (SvREFCNT(sitelib_sv) == 1);
2053 SvREFCNT_dec(sitelib_sv);
43c0c913 2054# endif
20ef40cf
GA
2055 }
2056#endif
2057
6224f72b
GS
2058 if (!scriptname)
2059 scriptname = argv[0];
3280af22 2060 if (PL_e_script) {
6224f72b
GS
2061 argc++,argv--;
2062 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2063 }
bd61b366 2064 else if (scriptname == NULL) {
6224f72b
GS
2065#ifdef MSDOS
2066 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2067 moreswitches("h");
6224f72b
GS
2068#endif
2069 scriptname = "-";
2070 }
2071
b7975bdd 2072 assert (!PL_tainted);
2cace6ac 2073 init_perllib();
6224f72b 2074
a52eba0e 2075 {
f20b2998 2076 bool suidscript = FALSE;
829372d3 2077
cc69b689 2078 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2079
2f9285f8 2080 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2081 linestr_sv, rsfp);
6224f72b 2082
64ca3a65 2083#ifndef PERL_MICRO
a52eba0e
NC
2084# if defined(SIGCHLD) || defined(SIGCLD)
2085 {
2086# ifndef SIGCHLD
2087# define SIGCHLD SIGCLD
2088# endif
2089 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2090 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2091 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2092 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2093 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2094 }
0b5b802d 2095 }
a52eba0e 2096# endif
64ca3a65 2097#endif
0b5b802d 2098
737c24fc 2099 if (doextract) {
faef540c 2100
f20b2998 2101 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2102 setuid scripts. */
2103 forbid_setid('x', suidscript);
f20b2998 2104 /* Hence you can't get here if suidscript is true */
faef540c 2105
2f9285f8 2106 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2107 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2108 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2109 }
f4c556ac 2110 }
6224f72b 2111
ea726b52 2112 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2113 CvUNIQUE_on(PL_compcv);
2114
dd2155a4 2115 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2116
dd69841b
BB
2117 PL_isarev = newHV();
2118
0c4f7ff0 2119 boot_core_PerlIO();
6224f72b 2120 boot_core_UNIVERSAL();
e1a479c5 2121 boot_core_mro();
4a5df386 2122 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2123
2124 if (xsinit)
acfe0abc 2125 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2126#ifndef PERL_MICRO
d0d72822 2127#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2128 init_os_extras();
6224f72b 2129#endif
64ca3a65 2130#endif
6224f72b 2131
29209bc5 2132#ifdef USE_SOCKS
1b9c9cf5
DH
2133# ifdef HAS_SOCKS5_INIT
2134 socks5_init(argv[0]);
2135# else
29209bc5 2136 SOCKSinit(argv[0]);
1b9c9cf5 2137# endif
ac27b0f5 2138#endif
29209bc5 2139
6224f72b
GS
2140 init_predump_symbols();
2141 /* init_postdump_symbols not currently designed to be called */
2142 /* more than once (ENV isn't cleared first, for example) */
2143 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2144 if (!PL_do_undump)
6224f72b
GS
2145 init_postdump_symbols(argc,argv,env);
2146
27da23d5
JH
2147 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2148 * or explicitly in some platforms.
085a54d9 2149 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2150 * look like the user wants to use UTF-8. */
a0fd4948 2151#if defined(__SYMBIAN32__)
27da23d5
JH
2152 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2153#endif
e27b5b51 2154# ifndef PERL_IS_MINIPERL
06e66572
JH
2155 if (PL_unicode) {
2156 /* Requires init_predump_symbols(). */
a05d7ebb 2157 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2158 IO* io;
2159 PerlIO* fp;
2160 SV* sv;
2161
a05d7ebb 2162 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2163 * and the default open disciplines. */
a05d7ebb
JH
2164 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2165 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2166 (fp = IoIFP(io)))
2167 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2168 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2169 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2170 (fp = IoOFP(io)))
2171 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2172 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2173 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2174 (fp = IoOFP(io)))
2175 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2176 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2177 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2178 SVt_PV)))) {
a05d7ebb
JH
2179 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2180 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2181 if (in) {
2182 if (out)
76f68e9b 2183 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2184 else
76f68e9b 2185 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2186 }
2187 else if (out)
76f68e9b 2188 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2189 SvSETMAGIC(sv);
2190 }
b310b053
JH
2191 }
2192 }
e27b5b51 2193#endif
b310b053 2194
c7030b81
NC
2195 {
2196 const char *s;
4ffa73a3
JH
2197 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2198 if (strEQ(s, "unsafe"))
2199 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2200 else if (strEQ(s, "safe"))
2201 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2202 else
2203 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2204 }
c7030b81 2205 }
4ffa73a3 2206
81d86705 2207#ifdef PERL_MAD
c7030b81
NC
2208 {
2209 const char *s;
81d86705
NC
2210 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2211 PL_madskills = 1;
2212 PL_minus_c = 1;
2213 if (!s || !s[0])
2214 PL_xmlfp = PerlIO_stdout();
2215 else {
2216 PL_xmlfp = PerlIO_open(s, "w");
2217 if (!PL_xmlfp)
2218 Perl_croak(aTHX_ "Can't open %s", s);
2219 }
1a9a51d4 2220 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2221 }
c7030b81
NC
2222 }
2223
2224 {
2225 const char *s;
81d86705
NC
2226 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2227 PL_madskills = atoi(s);
1a9a51d4 2228 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2229 }
c7030b81 2230 }
81d86705
NC
2231#endif
2232
8eaa0acf 2233 lex_start(linestr_sv, rsfp, 0);
219f7226 2234 PL_subname = newSVpvs("main");
6224f72b 2235
5486870f
DM
2236 if (add_read_e_script)
2237 filter_add(read_e_script, NULL);
2238
6224f72b
GS
2239 /* now parse the script */
2240
93189314 2241 SETERRNO(0,SS_NORMAL);
28ac2b49 2242 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2243 if (PL_minus_c)
cea2e8a9 2244 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2245 else {
cea2e8a9 2246 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2247 PL_origfilename);
6224f72b
GS
2248 }
2249 }
57843af0 2250 CopLINE_set(PL_curcop, 0);
03d9f026 2251 SET_CURSTASH(PL_defstash);
3280af22
NIS
2252 if (PL_e_script) {
2253 SvREFCNT_dec(PL_e_script);
a0714e2c 2254 PL_e_script = NULL;
6224f72b
GS
2255 }
2256
3280af22 2257 if (PL_do_undump)
6224f72b
GS
2258 my_unexec();
2259
57843af0
GS
2260 if (isWARN_ONCE) {
2261 SAVECOPFILE(PL_curcop);
2262 SAVECOPLINE(PL_curcop);
3280af22 2263 gv_check(PL_defstash);
57843af0 2264 }
6224f72b
GS
2265
2266 LEAVE;
2267 FREETMPS;
2268
2269#ifdef MYMALLOC
f6a607bc
RGS
2270 {
2271 const char *s;
6224f72b
GS
2272 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2273 dump_mstats("after compilation:");
f6a607bc 2274 }
6224f72b
GS
2275#endif
2276
2277 ENTER;
febb3a6d 2278 PL_restartjmpenv = NULL;
3280af22 2279 PL_restartop = 0;
312caa8e 2280 return NULL;
6224f72b
GS
2281}
2282
954c1994
GS
2283/*
2284=for apidoc perl_run
2285
2286Tells a Perl interpreter to run. See L<perlembed>.
2287
2288=cut
2289*/
2290
6224f72b 2291int
0cb96387 2292perl_run(pTHXx)
6224f72b 2293{
97aff369 2294 dVAR;
6224f72b 2295 I32 oldscope;
14dd3ad8 2296 int ret = 0;
db36c5a1 2297 dJMPENV;
6224f72b 2298
7918f24d
NC
2299 PERL_ARGS_ASSERT_PERL_RUN;
2300#ifndef MULTIPLICITY
ed6c66dd 2301 PERL_UNUSED_ARG(my_perl);
7918f24d 2302#endif
9d4ba2ae 2303
3280af22 2304 oldscope = PL_scopestack_ix;
96e176bf
CL
2305#ifdef VMS
2306 VMSISH_HUSHED = 0;
2307#endif
6224f72b 2308
14dd3ad8 2309 JMPENV_PUSH(ret);
6224f72b
GS
2310 switch (ret) {
2311 case 1:
2312 cxstack_ix = -1; /* start context stack again */
312caa8e 2313 goto redo_body;
14dd3ad8 2314 case 0: /* normal completion */
14dd3ad8
GS
2315 redo_body:
2316 run_body(oldscope);
14dd3ad8
GS
2317 /* FALL THROUGH */
2318 case 2: /* my_exit() */
3280af22 2319 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2320 LEAVE;
2321 FREETMPS;
03d9f026 2322 SET_CURSTASH(PL_defstash);
3a1ee7e8 2323 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2324 PL_endav && !PL_minus_c) {
ca7b837b 2325 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2326 call_list(oldscope, PL_endav);
9ebf26ad 2327 }
6224f72b
GS
2328#ifdef MYMALLOC
2329 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2330 dump_mstats("after execution: ");
2331#endif
37038d91 2332 ret = STATUS_EXIT;
14dd3ad8 2333 break;
6224f72b 2334 case 3:
312caa8e
CS
2335 if (PL_restartop) {
2336 POPSTACK_TO(PL_mainstack);
2337 goto redo_body;
6224f72b 2338 }
bf49b057 2339 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2340 FREETMPS;
14dd3ad8
GS
2341 ret = 1;
2342 break;
6224f72b
GS
2343 }
2344
14dd3ad8
GS
2345 JMPENV_POP;
2346 return ret;
312caa8e
CS
2347}
2348
dd374669 2349STATIC void
14dd3ad8
GS
2350S_run_body(pTHX_ I32 oldscope)
2351{
97aff369 2352 dVAR;
6224f72b 2353 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2354 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2355
3280af22 2356 if (!PL_restartop) {
81d86705
NC
2357#ifdef PERL_MAD
2358 if (PL_xmlfp) {
2359 xmldump_all();
2360 exit(0); /* less likely to core dump than my_exit(0) */
2361 }
2362#endif
cf2782cd 2363#ifdef DEBUGGING
f0e3f042
CS
2364 if (DEBUG_x_TEST || DEBUG_B_TEST)
2365 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2366 if (!DEBUG_q_TEST)
2367 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2368#endif
6224f72b 2369
3280af22 2370 if (PL_minus_c) {
bf49b057 2371 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2372 my_exit(0);
2373 }
3280af22 2374 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2375 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2376 if (PL_initav) {
ca7b837b 2377 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2378 call_list(oldscope, PL_initav);
9ebf26ad 2379 }
f1fac472
NC
2380#ifdef PERL_DEBUG_READONLY_OPS
2381 Perl_pending_Slabs_to_ro(aTHX);
2382#endif
6224f72b
GS
2383 }
2384
2385 /* do it */
2386
ca7b837b 2387 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2388
3280af22 2389 if (PL_restartop) {
febb3a6d 2390 PL_restartjmpenv = NULL;
533c011a 2391 PL_op = PL_restartop;
3280af22 2392 PL_restartop = 0;
cea2e8a9 2393 CALLRUNOPS(aTHX);
6224f72b 2394 }
3280af22
NIS
2395 else if (PL_main_start) {
2396 CvDEPTH(PL_main_cv) = 1;
533c011a 2397 PL_op = PL_main_start;
cea2e8a9 2398 CALLRUNOPS(aTHX);
6224f72b 2399 }
f6b3007c
JH
2400 my_exit(0);
2401 /* NOTREACHED */
6224f72b
GS
2402}
2403
954c1994 2404/*
ccfc67b7
JH
2405=head1 SV Manipulation Functions
2406
954c1994
GS
2407=for apidoc p||get_sv
2408
64ace3f8
NC
2409Returns the SV of the specified Perl scalar. C<flags> are passed to
2410C<gv_fetchpv>. If C<GV_ADD> is set and the
2411Perl variable does not exist then it will be created. If C<flags> is zero
2412and the variable does not exist then NULL is returned.
954c1994
GS
2413
2414=cut
2415*/
2416
6224f72b 2417SV*
64ace3f8 2418Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2419{
2420 GV *gv;
7918f24d
NC
2421
2422 PERL_ARGS_ASSERT_GET_SV;
2423
64ace3f8 2424 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2425 if (gv)
2426 return GvSV(gv);
a0714e2c 2427 return NULL;
6224f72b
GS
2428}
2429
954c1994 2430/*
ccfc67b7
JH
2431=head1 Array Manipulation Functions
2432
954c1994
GS
2433=for apidoc p||get_av
2434
f0b90de1
SF
2435Returns the AV of the specified Perl global or package array with the given
2436name (so it won't work on lexical variables). C<flags> are passed
2437to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2438Perl variable does not exist then it will be created. If C<flags> is zero
2439and the variable does not exist then NULL is returned.
954c1994 2440
f0b90de1
SF
2441Perl equivalent: C<@{"$name"}>.
2442
954c1994
GS
2443=cut
2444*/
2445
6224f72b 2446AV*
cbfd0a87 2447Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2448{
cbfd0a87 2449 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2450
2451 PERL_ARGS_ASSERT_GET_AV;
2452
cbfd0a87 2453 if (flags)
6224f72b
GS
2454 return GvAVn(gv);
2455 if (gv)
2456 return GvAV(gv);
7d49f689 2457 return NULL;
6224f72b
GS
2458}
2459
954c1994 2460/*
ccfc67b7
JH
2461=head1 Hash Manipulation Functions
2462
954c1994
GS
2463=for apidoc p||get_hv
2464
6673a63c
NC
2465Returns the HV of the specified Perl hash. C<flags> are passed to
2466C<gv_fetchpv>. If C<GV_ADD> is set and the
2467Perl variable does not exist then it will be created. If C<flags> is zero
2468and the variable does not exist then NULL is returned.
954c1994
GS
2469
2470=cut
2471*/
2472
6224f72b 2473HV*
6673a63c 2474Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2475{
6673a63c 2476 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2477
2478 PERL_ARGS_ASSERT_GET_HV;
2479
6673a63c 2480 if (flags)
a0d0e21e
LW
2481 return GvHVn(gv);
2482 if (gv)
2483 return GvHV(gv);
5c284bb0 2484 return NULL;
a0d0e21e
LW
2485}
2486
954c1994 2487/*
ccfc67b7
JH
2488=head1 CV Manipulation Functions
2489
780a5241
NC
2490=for apidoc p||get_cvn_flags
2491
2492Returns the CV of the specified Perl subroutine. C<flags> are passed to
2493C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2494exist then it will be declared (which has the same effect as saying
2495C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2496then NULL is returned.
2497
954c1994
GS
2498=for apidoc p||get_cv
2499
780a5241 2500Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2501
2502=cut
2503*/
2504
a0d0e21e 2505CV*
780a5241 2506Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2507{
780a5241 2508 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2509 /* XXX this is probably not what they think they're getting.
2510 * It has the same effect as "sub name;", i.e. just a forward
2511 * declaration! */
7918f24d
NC
2512
2513 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2514
780a5241 2515 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2516 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2517 return newSUB(start_subparse(FALSE, 0),
780a5241 2518 newSVOP(OP_CONST, 0, sv),
5f66b61c 2519 NULL, NULL);
780a5241 2520 }
a0d0e21e 2521 if (gv)
8ebc5c01 2522 return GvCVu(gv);
601f1833 2523 return NULL;
a0d0e21e
LW
2524}
2525
2c67934f
NC
2526/* Nothing in core calls this now, but we can't replace it with a macro and
2527 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2528CV*
2529Perl_get_cv(pTHX_ const char *name, I32 flags)
2530{
7918f24d
NC
2531 PERL_ARGS_ASSERT_GET_CV;
2532
780a5241
NC
2533 return get_cvn_flags(name, strlen(name), flags);
2534}
2535
79072805
LW
2536/* Be sure to refetch the stack pointer after calling these routines. */
2537
954c1994 2538/*
ccfc67b7
JH
2539
2540=head1 Callback Functions
2541
954c1994
GS
2542=for apidoc p||call_argv
2543
f0b90de1
SF
2544Performs a callback to the specified named and package-scoped Perl subroutine
2545with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2546
2547Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2548
2549=cut
2550*/
2551
a0d0e21e 2552I32
8f42b153 2553Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2554
8ac85365
NIS
2555 /* See G_* flags in cop.h */
2556 /* null terminated arg list */
8990e307 2557{
97aff369 2558 dVAR;
a0d0e21e 2559 dSP;
8990e307 2560
7918f24d
NC
2561 PERL_ARGS_ASSERT_CALL_ARGV;
2562
924508f0 2563 PUSHMARK(SP);
a0d0e21e 2564 if (argv) {
8990e307 2565 while (*argv) {
6e449a3a 2566 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2567 argv++;
2568 }
a0d0e21e 2569 PUTBACK;
8990e307 2570 }
864dbfa3 2571 return call_pv(sub_name, flags);
8990e307
LW
2572}
2573
954c1994
GS
2574/*
2575=for apidoc p||call_pv
2576
2577Performs a callback to the specified Perl sub. See L<perlcall>.
2578
2579=cut
2580*/
2581
a0d0e21e 2582I32
864dbfa3 2583Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2584 /* name of the subroutine */
2585 /* See G_* flags in cop.h */
a0d0e21e 2586{
7918f24d
NC
2587 PERL_ARGS_ASSERT_CALL_PV;
2588
0da0e728 2589 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2590}
2591
954c1994
GS
2592/*
2593=for apidoc p||call_method
2594
2595Performs a callback to the specified Perl method. The blessed object must
2596be on the stack. See L<perlcall>.
2597
2598=cut
2599*/
2600
a0d0e21e 2601I32
864dbfa3 2602Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2603 /* name of the subroutine */
2604 /* See G_* flags in cop.h */
a0d0e21e 2605{
46ca9bac 2606 STRLEN len;
7918f24d
NC
2607 PERL_ARGS_ASSERT_CALL_METHOD;
2608
46ca9bac 2609 len = strlen(methname);
2610
2611 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2612 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2613}
2614
2615/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2616/*
2617=for apidoc p||call_sv
2618
2619Performs a callback to the Perl sub whose name is in the SV. See
2620L<perlcall>.
2621
2622=cut
2623*/
2624
a0d0e21e 2625I32
001d637e 2626Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2627 /* See G_* flags in cop.h */
a0d0e21e 2628{
27da23d5 2629 dVAR; dSP;
a0d0e21e 2630 LOGOP myop; /* fake syntax tree node */
968b3946 2631 UNOP method_op;
aa689395 2632 I32 oldmark;
8ea43dc8 2633 VOL I32 retval = 0;
a0d0e21e 2634 I32 oldscope;
54310121 2635 bool oldcatch = CATCH_GET;
6224f72b 2636 int ret;
c4420975 2637 OP* const oldop = PL_op;
db36c5a1 2638 dJMPENV;
1e422769 2639
7918f24d
NC
2640 PERL_ARGS_ASSERT_CALL_SV;
2641
a0d0e21e
LW
2642 if (flags & G_DISCARD) {
2643 ENTER;
2644 SAVETMPS;
2645 }
2f8edad0
NC
2646 if (!(flags & G_WANT)) {
2647 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2648 */
2649 flags |= G_SCALAR;
2650 }
a0d0e21e 2651
aa689395 2652 Zero(&myop, 1, LOGOP);
5f66b61c 2653 myop.op_next = NULL;
f51d4af5 2654 if (!(flags & G_NOARGS))
aa689395 2655 myop.op_flags |= OPf_STACKED;
4f911530 2656 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2657 SAVEOP();
533c011a 2658 PL_op = (OP*)&myop;
aa689395 2659
3280af22
NIS
2660 EXTEND(PL_stack_sp, 1);
2661 *++PL_stack_sp = sv;
aa689395 2662 oldmark = TOPMARK;
3280af22 2663 oldscope = PL_scopestack_ix;
a0d0e21e 2664
3280af22 2665 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2666 /* Handle first BEGIN of -d. */
3280af22 2667 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2668 /* Try harder, since this may have been a sighandler, thus
2669 * curstash may be meaningless. */
ea726b52 2670 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2671 && !(flags & G_NODEBUG))
533c011a 2672 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2673
968b3946
GS
2674 if (flags & G_METHOD) {
2675 Zero(&method_op, 1, UNOP);
2676 method_op.op_next = PL_op;
2677 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2678 method_op.op_type = OP_METHOD;
968b3946 2679 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2680 myop.op_type = OP_ENTERSUB;
f39d0b86 2681 PL_op = (OP*)&method_op;
968b3946
GS
2682 }
2683
312caa8e 2684 if (!(flags & G_EVAL)) {
0cdb2077 2685 CATCH_SET(TRUE);
d6f07c05 2686 CALL_BODY_SUB((OP*)&myop);
312caa8e 2687 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2688 CATCH_SET(oldcatch);
312caa8e
CS
2689 }
2690 else {
d78bda3d 2691 myop.op_other = (OP*)&myop;
3280af22 2692 PL_markstack_ptr--;
edb2152a 2693 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2694 PL_markstack_ptr++;
a0d0e21e 2695
14dd3ad8 2696 JMPENV_PUSH(ret);
edb2152a 2697
6224f72b
GS
2698 switch (ret) {
2699 case 0:
14dd3ad8 2700 redo_body:
d6f07c05 2701 CALL_BODY_SUB((OP*)&myop);
312caa8e 2702 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2703 if (!(flags & G_KEEPERR)) {
ab69dbc2 2704 CLEAR_ERRSV();
8433848b 2705 }
a0d0e21e 2706 break;
6224f72b 2707 case 1:
f86702cc 2708 STATUS_ALL_FAILURE;
a0d0e21e 2709 /* FALL THROUGH */
6224f72b 2710 case 2:
a0d0e21e 2711 /* my_exit() was called */
03d9f026 2712 SET_CURSTASH(PL_defstash);
a0d0e21e 2713 FREETMPS;
14dd3ad8 2714 JMPENV_POP;
f86702cc 2715 my_exit_jump();
a0d0e21e 2716 /* NOTREACHED */
6224f72b 2717 case 3:
3280af22 2718 if (PL_restartop) {
febb3a6d 2719 PL_restartjmpenv = NULL;
533c011a 2720 PL_op = PL_restartop;
3280af22 2721 PL_restartop = 0;
312caa8e 2722 goto redo_body;
a0d0e21e 2723 }
3280af22 2724 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2725 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2726 retval = 0;
2727 else {
2728 retval = 1;
3280af22 2729 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2730 }
312caa8e 2731 break;
a0d0e21e 2732 }
a0d0e21e 2733
edb2152a
NC
2734 if (PL_scopestack_ix > oldscope)
2735 delete_eval_scope();
14dd3ad8 2736 JMPENV_POP;
a0d0e21e 2737 }
1e422769 2738
a0d0e21e 2739 if (flags & G_DISCARD) {
3280af22 2740 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2741 retval = 0;
2742 FREETMPS;
2743 LEAVE;
2744 }
533c011a 2745 PL_op = oldop;
a0d0e21e
LW
2746 return retval;
2747}
2748
6e72f9df 2749/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2750
954c1994
GS
2751/*
2752=for apidoc p||eval_sv
2753
be064c4a
DM
2754Tells Perl to C<eval> the string in the SV. It supports the same flags
2755as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2756
2757=cut
2758*/
2759
a0d0e21e 2760I32
864dbfa3 2761Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2762
8ac85365 2763 /* See G_* flags in cop.h */
a0d0e21e 2764{
97aff369 2765 dVAR;
924508f0 2766 dSP;
a0d0e21e 2767 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2768 VOL I32 oldmark = SP - PL_stack_base;
2769 VOL I32 retval = 0;
6224f72b 2770 int ret;
c4420975 2771 OP* const oldop = PL_op;
db36c5a1 2772 dJMPENV;
84902520 2773
7918f24d
NC
2774 PERL_ARGS_ASSERT_EVAL_SV;
2775
4633a7c4
LW
2776 if (flags & G_DISCARD) {
2777 ENTER;
2778 SAVETMPS;
2779 }
2780
462e5cf6 2781 SAVEOP();
533c011a
NIS
2782 PL_op = (OP*)&myop;
2783 Zero(PL_op, 1, UNOP);
3280af22
NIS
2784 EXTEND(PL_stack_sp, 1);
2785 *++PL_stack_sp = sv;
79072805 2786
4633a7c4
LW
2787 if (!(flags & G_NOARGS))
2788 myop.op_flags = OPf_STACKED;
5f66b61c 2789 myop.op_next = NULL;
6e72f9df 2790 myop.op_type = OP_ENTEREVAL;
4f911530 2791 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2792 if (flags & G_KEEPERR)
2793 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2794
dedbcade
DM
2795 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2796 * before a PUSHEVAL, which corrupts the stack after a croak */
2797 TAINT_PROPER("eval_sv()");
2798
14dd3ad8 2799 JMPENV_PUSH(ret);
6224f72b
GS
2800 switch (ret) {
2801 case 0:
14dd3ad8 2802 redo_body:
2ba65d5f
DM
2803 if (PL_op == (OP*)(&myop)) {
2804 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2805 if (!PL_op)
2806 goto fail; /* failed in compilation */
2807 }
4aca2f62 2808 CALLRUNOPS(aTHX);
312caa8e 2809 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2810 if (!(flags & G_KEEPERR)) {
ab69dbc2 2811 CLEAR_ERRSV();
8433848b 2812 }
4633a7c4 2813 break;
6224f72b 2814 case 1:
f86702cc 2815 STATUS_ALL_FAILURE;
4633a7c4 2816 /* FALL THROUGH */
6224f72b 2817 case 2:
4633a7c4 2818 /* my_exit() was called */
03d9f026 2819 SET_CURSTASH(PL_defstash);
4633a7c4 2820 FREETMPS;
14dd3ad8 2821 JMPENV_POP;
f86702cc 2822 my_exit_jump();
4633a7c4 2823 /* NOTREACHED */
6224f72b 2824 case 3:
3280af22 2825 if (PL_restartop) {
febb3a6d 2826 PL_restartjmpenv = NULL;
533c011a 2827 PL_op = PL_restartop;
3280af22 2828 PL_restartop = 0;
312caa8e 2829 goto redo_body;
4633a7c4 2830 }
4aca2f62 2831 fail:
3280af22 2832 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2833 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2834 retval = 0;
2835 else {
2836 retval = 1;
3280af22 2837 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2838 }
312caa8e 2839 break;
4633a7c4
LW
2840 }
2841
14dd3ad8 2842 JMPENV_POP;
4633a7c4 2843 if (flags & G_DISCARD) {
3280af22 2844 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2845 retval = 0;
2846 FREETMPS;
2847 LEAVE;
2848 }
533c011a 2849 PL_op = oldop;
4633a7c4
LW
2850 return retval;
2851}
2852
954c1994
GS
2853/*
2854=for apidoc p||eval_pv
2855
2856Tells Perl to C<eval> the given string and return an SV* result.
2857
2858=cut
2859*/
2860
137443ea 2861SV*
864dbfa3 2862Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2863{
97aff369 2864 dVAR;
137443ea
PP
2865 dSP;
2866 SV* sv = newSVpv(p, 0);
2867
7918f24d
NC
2868 PERL_ARGS_ASSERT_EVAL_PV;
2869
864dbfa3 2870 eval_sv(sv, G_SCALAR);
137443ea
PP
2871 SvREFCNT_dec(sv);
2872
2873 SPAGAIN;
2874 sv = POPs;
2875 PUTBACK;
2876
2d8e6c8d 2877 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2878 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2879 }
137443ea
PP
2880
2881 return sv;
2882}
2883
4633a7c4
LW
2884/* Require a module. */
2885
954c1994 2886/*
ccfc67b7
JH
2887=head1 Embedding Functions
2888
954c1994
GS
2889=for apidoc p||require_pv
2890
7d3fb230
BS
2891Tells Perl to C<require> the file named by the string argument. It is
2892analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2893implemented that way; consider using load_module instead.
954c1994 2894
7d3fb230 2895=cut */
954c1994 2896
4633a7c4 2897void
864dbfa3 2898Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2899{
97aff369 2900 dVAR;
d3acc0f7 2901 dSP;
97aff369 2902 SV* sv;
7918f24d
NC
2903
2904 PERL_ARGS_ASSERT_REQUIRE_PV;
2905
e788e7d3 2906 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2907 PUTBACK;
be41e5d9
NC
2908 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2909 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2910 SPAGAIN;
2911 POPSTACK;
79072805
LW
2912}
2913
76e3520e 2914STATIC void
b6f82619 2915S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2916{
ab821d7f 2917 /* This message really ought to be max 23 lines.
75c72d73 2918 * Removed -h because the user already knows that option. Others? */
fb73857a 2919
1566c39d
NC
2920 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2921 minimum of 509 character string literals. */
27da23d5 2922 static const char * const usage_msg[] = {
1566c39d
NC
2923" -0[octal] specify record separator (\\0, if no argument)\n"
2924" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2925" -C[number/list] enables the listed Unicode features\n"
2926" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2927" -d[:debugger] run program under debugger\n"
2928" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2929" -e program one line of program (several -e's allowed, omit programfile)\n"
2930" -E program like -e, but enables all optional features\n"
2931" -f don't do $sitelib/sitecustomize.pl at startup\n"
2932" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2933" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2934" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2935" -l[octal] enable line ending processing, specifies line terminator\n"
2936" -[mM][-]module execute \"use/no module...\" before executing program\n"
2937" -n assume \"while (<>) { ... }\" loop around program\n"
2938" -p assume loop like -n but print line also, like sed\n"
2939" -s enable rudimentary parsing for switches after programfile\n"
2940" -S look for programfile using PATH environment variable\n",
2941" -t enable tainting warnings\n"
2942" -T enable tainting checks\n"
2943" -u dump core after parsing program\n"
2944" -U allow unsafe operations\n"
2945" -v print version, patchlevel and license\n"
2946" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2947" -w enable many useful warnings\n"
1566c39d
NC
2948" -W enable all warnings\n"
2949" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2950" -X disable all warnings\n"
2951" \n"
2952"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2953NULL
2954};
27da23d5 2955 const char * const *p = usage_msg;
1566c39d 2956 PerlIO *out = PerlIO_stdout();
fb73857a 2957
1566c39d
NC
2958 PerlIO_printf(out,
2959 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2960 PL_origargv[0]);
fb73857a 2961 while (*p)
1566c39d 2962 PerlIO_puts(out, *p++);
b6f82619 2963 my_exit(0);
4633a7c4
LW
2964}
2965
b4ab917c
DM
2966/* convert a string of -D options (or digits) into an int.
2967 * sets *s to point to the char after the options */
2968
2969#ifdef DEBUGGING
2970int
e1ec3a88 2971Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2972{
27da23d5 2973 static const char * const usage_msgd[] = {
651b8f1a
NC
2974 " Debugging flag values: (see also -d)\n"
2975 " p Tokenizing and parsing (with v, displays parse stack)\n"
2976 " s Stack snapshots (with v, displays all stacks)\n"
2977 " l Context (loop) stack processing\n"
2978 " t Trace execution\n"
2979 " o Method and overloading resolution\n",
2980 " c String/numeric conversions\n"
2981 " P Print profiling info, source file input state\n"
2982 " m Memory and SV allocation\n"
2983 " f Format processing\n"
2984 " r Regular expression parsing and execution\n"
2985 " x Syntax tree dump\n",
2986 " u Tainting checks\n"
2987 " H Hash dump -- usurps values()\n"
2988 " X Scratchpad allocation\n"
2989 " D Cleaning up\n"
2990 " T Tokenising\n"
2991 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2992 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2993 " v Verbose: use in conjunction with other flags\n"
2994 " C Copy On Write\n"
2995 " A Consistency checks on internal structures\n"
2996 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2997 " M trace smart match resolution\n"
2998 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2999 NULL
3000 };
b4ab917c 3001 int i = 0;
7918f24d
NC
3002
3003 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3004
b4ab917c
DM
3005 if (isALPHA(**s)) {
3006 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3007 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3008
3009 for (; isALNUM(**s); (*s)++) {
c4420975 3010 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3011 if (d)
3012 i |= 1 << (d - debopts);
3013 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3014 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3015 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3016 }
3017 }
e6e64d9b 3018 else if (isDIGIT(**s)) {
b4ab917c
DM
3019 i = atoi(*s);
3020 for (; isALNUM(**s); (*s)++) ;
3021 }
ddcf8bc1 3022 else if (givehelp) {
06e869a4 3023 const char *const *p = usage_msgd;
651b8f1a 3024 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3025 }
b4ab917c
DM
3026# ifdef EBCDIC
3027 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3028 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3029 "-Dp not implemented on this platform\n");
3030# endif
3031 return i;
3032}
3033#endif
3034
79072805
LW
3035/* This routine handles any switches that can be given during run */
3036
c7030b81
NC
3037const char *
3038Perl_moreswitches(pTHX_ const char *s)
79072805 3039{
27da23d5 3040 dVAR;
84c133a0 3041 UV rschar;
0544e6df 3042 const char option = *s; /* used to remember option in -m/-M code */
79072805 3043
7918f24d
NC
3044 PERL_ARGS_ASSERT_MORESWITCHES;
3045
79072805
LW
3046 switch (*s) {
3047 case '0':
a863c7d1 3048 {
f2095865 3049 I32 flags = 0;
a3b680e6 3050 STRLEN numlen;
f2095865
JH
3051
3052 SvREFCNT_dec(PL_rs);
3053 if (s[1] == 'x' && s[2]) {
a3b680e6 3054 const char *e = s+=2;
f2095865
JH
3055 U8 *tmps;
3056
a3b680e6
AL
3057 while (*e)
3058 e++;
f2095865
JH
3059 numlen = e - s;
3060 flags = PERL_SCAN_SILENT_ILLDIGIT;
3061 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3062 if (s + numlen < e) {
3063 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3064 numlen = 0;
3065 s--;
3066 }
396482e1 3067 PL_rs = newSVpvs("");
c5661c80 3068 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3069 tmps = (U8*)SvPVX(PL_rs);
3070 uvchr_to_utf8(tmps, rschar);
3071 SvCUR_set(PL_rs, UNISKIP(rschar));
3072 SvUTF8_on(PL_rs);
3073 }
3074 else {
3075 numlen = 4;
3076 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3077 if (rschar & ~((U8)~0))
3078 PL_rs = &PL_sv_undef;
3079 else if (!rschar && numlen >= 2)
396482e1 3080 PL_rs = newSVpvs("");
f2095865
JH
3081 else {
3082 char ch = (char)rschar;
3083 PL_rs = newSVpvn(&ch, 1);
3084 }
3085 }
64ace3f8 3086 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3087 return s + numlen;
a863c7d1 3088 }
46487f74 3089 case 'C':
a05d7ebb 3090 s++;
dd374669 3091 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3092 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3093 PL_utf8cache = -1;
46487f74 3094 return s;
2304df62 3095 case 'F':
3280af22 3096 PL_minus_F = TRUE;
ebce5377
RGS
3097 PL_splitstr = ++s;
3098 while (*s && !isSPACE(*s)) ++s;
e49e380e 3099 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3100 return s;
79072805 3101 case 'a':
3280af22 3102 PL_minus_a = TRUE;
79072805
LW
3103 s++;
3104 return s;
3105 case 'c':
3280af22 3106 PL_minus_c = TRUE;
79072805
LW
3107 s++;
3108 return s;
3109 case 'd':
f20b2998 3110 forbid_setid('d', FALSE);
4633a7c4 3111 s++;
2cbb2ee1
RGS
3112
3113 /* -dt indicates to the debugger that threads will be used */
3114 if (*s == 't' && !isALNUM(s[1])) {
3115 ++s;
3116 my_setenv("PERL5DB_THREADED", "1");
3117 }
3118
70c94a19
RR
3119 /* The following permits -d:Mod to accepts arguments following an =
3120 in the fashion that -MSome::Mod does. */
3121 if (*s == ':' || *s == '=') {
b19934fb
NC
3122 const char *start;
3123 const char *end;
3124 SV *sv;
3125
3126 if (*++s == '-') {
3127 ++s;
3128 sv = newSVpvs("no Devel::");
3129 } else {
3130 sv = newSVpvs("use Devel::");
3131 }
3132
3133 start = s;
3134 end = s + strlen(s);
f85893a1 3135
b19934fb 3136 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3137 while(isALNUM(*s) || *s==':') ++s;
3138 if (*s != '=')
f85893a1 3139 sv_catpvn(sv, start, end - start);
70c94a19
RR
3140 else {
3141 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3142 /* Don't use NUL as q// delimiter here, this string goes in the
3143 * environment. */
3144 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3145 }
f85893a1 3146 s = end;
184f32ec 3147 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3148 SvREFCNT_dec(sv);
4633a7c4 3149 }
ed094faf 3150 if (!PL_perldb) {
3280af22 3151 PL_perldb = PERLDB_ALL;
a0d0e21e 3152 init_debugger();
ed094faf 3153 }
79072805
LW
3154 return s;
3155 case 'D':
0453d815 3156 {
79072805 3157#ifdef DEBUGGING
f20b2998 3158 forbid_setid('D', FALSE);
b4ab917c 3159 s++;
dd374669 3160 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3161#else /* !DEBUGGING */
0453d815 3162 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3163 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3164 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3165 for (s++; isALNUM(*s); s++) ;
79072805 3166#endif
79072805 3167 return s;
0453d815 3168 }
4633a7c4 3169 case 'h':
b6f82619 3170 usage();
79072805 3171 case 'i':
43c5f42d 3172 Safefree(PL_inplace);
c030f24b
GH
3173#if defined(__CYGWIN__) /* do backup extension automagically */
3174 if (*(s+1) == '\0') {
c86a4f2e 3175 PL_inplace = savepvs(".bak");
c030f24b
GH
3176 return s+1;
3177 }
3178#endif /* __CYGWIN__ */
5ef5d758 3179 {
d4c19fe8 3180 const char * const start = ++s;
5ef5d758
NC
3181 while (*s && !isSPACE(*s))
3182 ++s;
3183
3184 PL_inplace = savepvn(start, s - start);
3185 }
7b8d334a 3186 if (*s) {
5ef5d758 3187 ++s;
7b8d334a 3188 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3189 s++;
7b8d334a 3190 }
fb73857a 3191 return s;
4e49a025 3192 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3193 forbid_setid('I', FALSE);
fb73857a
PP
3194 ++s;
3195 while (*s && isSPACE(*s))
3196 ++s;
3197 if (*s) {
c7030b81 3198 const char *e, *p;
0df16ed7
GS
3199 p = s;
3200 /* ignore trailing spaces (possibly followed by other switches) */
3201 do {
3202 for (e = p; *e && !isSPACE(*e); e++) ;
3203 p = e;
3204 while (isSPACE(*p))
3205 p++;
3206 } while (*p && *p != '-');
55b4bc1c 3207 incpush(s, e-s,
e28f3139 3208 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3209 s = p;
3210 if (*s == '-')
3211 s++;
79072805
LW
3212 }
3213 else
a67e862a 3214 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3215 return s;
79072805 3216 case 'l':
3280af22 3217 PL_minus_l = TRUE;
79072805 3218 s++;
7889fe52
NIS
3219 if (PL_ors_sv) {
3220 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3221 PL_ors_sv = NULL;
7889fe52 3222 }
79072805 3223 if (isDIGIT(*s)) {
53305cf1 3224 I32 flags = 0;
a3b680e6 3225 STRLEN numlen;
396482e1 3226 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3227 numlen = 3 + (*s == '0');
3228 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3229 s += numlen;
3230 }
3231 else {
8bfdd7d9 3232 if (RsPARA(PL_rs)) {
396482e1 3233 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3234 }
3235 else {
8bfdd7d9 3236 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3237 }
79072805
LW
3238 }
3239 return s;
1a30305b 3240 case 'M':
f20b2998 3241 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3242 /* FALL THROUGH */
3243 case 'm':
f20b2998 3244 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3245 if (*++s) {
c7030b81 3246 const char *start;
b64cb68c 3247 const char *end;
11343788 3248 SV *sv;
e1ec3a88 3249 const char *use = "use ";
0544e6df 3250 bool colon = FALSE;
a5f75d66 3251 /* -M-foo == 'no foo' */
d0043bd1
NC
3252 /* Leading space on " no " is deliberate, to make both
3253 possibilities the same length. */
3254 if (*s == '-') { use = " no "; ++s; }
3255 sv = newSVpvn(use,4);
a5f75d66 3256 start = s;
1a30305b 3257 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3258 while(isALNUM(*s) || *s==':') {
3259 if( *s++ == ':' ) {
3260 if( *s == ':' )
3261 s++;
3262 else
3263 colon = TRUE;
3264 }
3265 }
3266 if (s == start)
3267 Perl_croak(aTHX_ "Module name required with -%c option",
3268 option);
3269 if (colon)
3270 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3271 "contains single ':'",
63da6837 3272 (int)(s - start), start, option);
b64cb68c 3273 end = s + strlen(s);
c07a80fd 3274 if (*s != '=') {
b64cb68c 3275 sv_catpvn(sv, start, end - start);
0544e6df 3276 if (option == 'm') {
c07a80fd 3277 if (*s != '\0')
cea2e8a9 3278 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3279 sv_catpvs( sv, " ()");
c07a80fd
PP
3280 }
3281 } else {
11343788 3282 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3283 /* Use NUL as q''-delimiter. */
3284 sv_catpvs(sv, " split(/,/,q\0");
3285 ++s;
3286 sv_catpvn(sv, s, end - s);
396482e1 3287 sv_catpvs(sv, "\0)");
c07a80fd 3288 }
b64cb68c 3289 s = end;
29a861e7 3290 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3291 }
3292 else
0544e6df 3293 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3294 return s;
79072805 3295 case 'n':
3280af22 3296 PL_minus_n = TRUE;
79072805
LW
3297 s++;
3298 return s;
3299 case 'p':
3280af22 3300 PL_minus_p = TRUE;
79072805
LW
3301 s++;
3302 return s;
3303 case 's':
f20b2998 3304 forbid_setid('s', FALSE);
3280af22 3305 PL_doswitches = TRUE;
79072805
LW
3306 s++;
3307 return s;
6537fe72 3308 case 't':
27a6968b 3309 case 'T':
6537fe72 3310 if (!PL_tainting)
27a6968b 3311 TOO_LATE_FOR(*s);
6537fe72 3312 s++;
463ee0b2 3313 return s;
79072805 3314 case 'u':
3280af22 3315 PL_do_undump = TRUE;
79072805
LW
3316 s++;
3317 return s;
3318 case 'U':
3280af22 3319 PL_unsafe = TRUE;
79072805
LW
3320 s++;
3321 return s;
3322 case 'v':
c4bc78d9
NC
3323 minus_v();
3324 case 'w':
3325 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3326 PL_dowarn |= G_WARN_ON;
3327 }
3328 s++;
3329 return s;
3330 case 'W':
3331 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3332 if (!specialWARN(PL_compiling.cop_warnings))
3333 PerlMemShared_free(PL_compiling.cop_warnings);
3334 PL_compiling.cop_warnings = pWARN_ALL ;
3335 s++;
3336 return s;
3337 case 'X':
3338 PL_dowarn = G_WARN_ALL_OFF;
3339 if (!specialWARN(PL_compiling.cop_warnings))
3340 PerlMemShared_free(PL_compiling.cop_warnings);
3341 PL_compiling.cop_warnings = pWARN_NONE ;
3342 s++;
3343 return s;
3344 case '*':
3345 case ' ':
3346 while( *s == ' ' )
3347 ++s;
3348 if (s[0] == '-') /* Additional switches on #! line. */
3349 return s+1;
3350 break;
3351 case '-':
3352 case 0:
3353#if defined(WIN32) || !defined(PERL_STRICT_CR)
3354 case '\r':
3355#endif
3356 case '\n':
3357 case '\t':
3358 break;
3359#ifdef ALTERNATE_SHEBANG
3360 case 'S': /* OS/2 needs -S on "extproc" line. */
3361 break;
3362#endif
3363 default:
3364 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
3365 }
3366 return NULL;
3367}
3368
3369
3370STATIC void
3371S_minus_v(pTHX)
3372{
d7aa5382 3373 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3374 upg_version(PL_patchlevel, TRUE);
8e9464f1 3375#if !defined(DGUX)
46807d8e
YO
3376 {
3377 SV* level= vstringify(PL_patchlevel);
3378#ifdef PERL_PATCHNUM
23d483e2
NC
3379# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3380 SV *num = newSVpvs(PERL_PATCHNUM "*");
3381# else
3382 SV *num = newSVpvs(PERL_PATCHNUM);
3383# endif
46807d8e
YO
3384
3385 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3386 SvREFCNT_dec(level);
3387 level= num;
3388 } else {
d0a9311f 3389 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3390 SvREFCNT_dec(num);
3391 }
3392 #endif
3393 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3394 "\nThis is perl " STRINGIFY(PERL_REVISION)
3395 ", version " STRINGIFY(PERL_VERSION)
3396 ", subversion " STRINGIFY(PERL_SUBVERSION)
3397 " (%"SVf") built for " ARCHNAME, level
3398 );
46807d8e
YO
3399 SvREFCNT_dec(level);
3400 }
8e9464f1
JH
3401#else /* DGUX */
3402/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3403 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3404 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3405 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3406 PerlIO_printf(PerlIO_stdout(),
3407 Perl_form(aTHX_ " built under %s at %s %s\n",
3408 OSNAME, __DATE__, __TIME__));
3409 PerlIO_printf(PerlIO_stdout(),
3410 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3411 OSVERS));
8e9464f1 3412#endif /* !DGUX */
fb73857a
PP
3413#if defined(LOCAL_PATCH_COUNT)
3414 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3415 PerlIO_printf(PerlIO_stdout(),
3416 "\n(with %d registered patch%s, "
3417 "see perl -V for more detail)",
bb7a0f54 3418 LOCAL_PATCH_COUNT,
b0e47665 3419 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3420#endif
1a30305b 3421
b0e47665 3422 PerlIO_printf(PerlIO_stdout(),
010d7370 3423 "\n\nCopyright 1987-2011, Larry Wall\n");
79072805 3424#ifdef MSDOS
b0e47665
GS
3425 PerlIO_printf(PerlIO_stdout(),
3426 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3427#endif
3428#ifdef DJGPP
b0e47665
GS
3429 PerlIO_printf(PerlIO_stdout(),
3430 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3431 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3432#endif
79072805 3433#ifdef OS2
b0e47665
GS
3434 PerlIO_printf(PerlIO_stdout(),
3435 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3436 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3437#endif
79072805 3438#ifdef atarist
b0e47665
GS
3439 PerlIO_printf(PerlIO_stdout(),
3440 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3441#endif
a3f9223b 3442#ifdef __BEOS__
b0e47665
GS
3443 PerlIO_printf(PerlIO_stdout(),
3444 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3445#endif
1d84e8df 3446#ifdef MPE
b0e47665 3447 PerlIO_printf(PerlIO_stdout(),
e583a879 3448 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3449#endif
9d116dd7 3450#ifdef OEMVS
b0e47665
GS
3451 PerlIO_printf(PerlIO_stdout(),
3452 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3453#endif
495c5fdc 3454#ifdef __VOS__
b0e47665 3455 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3456 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3457#endif
092bebab 3458#ifdef __OPEN_VM
b0e47665
GS
3459 PerlIO_printf(PerlIO_stdout(),
3460 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3461#endif
a1a0e61e 3462#ifdef POSIX_BC
b0e47665
GS
3463 PerlIO_printf(PerlIO_stdout(),
3464 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3465#endif
f83d2536 3466#ifdef EPOC
b0e47665 3467 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3468 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3469#endif
e1caacb4 3470#ifdef UNDER_CE
b475b3e6
JH
3471 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3472 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3473 wce_hitreturn();
3474#endif
a0fd4948 3475#ifdef __SYMBIAN32__
27da23d5
JH
3476 PerlIO_printf(PerlIO_stdout(),
3477 "Symbian port by Nokia, 2004-2005\n");
3478#endif
baed7233
DL
3479#ifdef BINARY_BUILD_NOTICE
3480 BINARY_BUILD_NOTICE;
3481#endif
b0e47665
GS
3482 PerlIO_printf(PerlIO_stdout(),
3483 "\n\
79072805 3484Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3485GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3486Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3487this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3488Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3489 my_exit(0);
79072805
LW
3490}
3491
3492/* compliments of Tom Christiansen */
3493
3494/* unexec() can be found in the Gnu emacs distribution */
ee580363 3495/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3496
3497void
864dbfa3 3498Perl_my_unexec(pTHX)
79072805 3499{
b37c2d43 3500 PERL_UNUSED_CONTEXT;
79072805 3501#ifdef UNEXEC
b37c2d43
AL
3502 SV * prog = newSVpv(BIN_EXP, 0);
3503 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3504 int status = 1;
79072805
LW
3505 extern int etext;
3506
396482e1 3507 sv_catpvs(prog, "/perl");
396482e1 3508 sv_catpvs(file, ".perldump");
79072805 3509
ee580363
GS
3510 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3511 /* unexec prints msg to stderr in case of failure */
6ad3d225 3512 PerlProc_exit(status);
79072805 3513#else
a5f75d66
AD
3514# ifdef VMS
3515# include <lib$routines.h>
3516 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3517# elif defined(WIN32) || defined(__CYGWIN__)
3518 Perl_croak(aTHX_ "dump is not supported");