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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
LW
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
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DM
21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
166f8a29
DM
25 */
26
43c0c913
NC
27#ifdef PERL_IS_MINIPERL
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
378cc40b 36
011f1a1a
JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
JH
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
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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;
7918f24d
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142
143 PERL_ARGS_ASSERT_SYS_INIT3;
144
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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
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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);
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GS
176 Zero(my_perl, 1, PerlInterpreter);
177 PL_Mem = ipM;
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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
954c1994
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);
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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
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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
404ad9dc 2026 sitecustomize script. */
43c0c913
NC
2027# ifdef PERL_IS_MINIPERL
2028 AV *const inc = GvAV(PL_incgv);
2029 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2030
2031 if (inc0) {
2032 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2033 Perl_newSVpvf(aTHX_
2034 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
2035 }
2036# else
2037 /* SITELIB_EXP is a function call on Win32. */
c29067d7
CH
2038 const char *const raw_sitelib = SITELIB_EXP;
2039 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2040 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2041 INCPUSH_CAN_RELOCATE);
2042 const char *const sitelib = SvPVX(sitelib_sv);
29a861e7 2043 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
2044 Perl_newSVpvf(aTHX_
2045 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
c29067d7
CH
2046 assert (SvREFCNT(sitelib_sv) == 1);
2047 SvREFCNT_dec(sitelib_sv);
43c0c913 2048# endif
20ef40cf
GA
2049 }
2050#endif
2051
6224f72b
GS
2052 if (!scriptname)
2053 scriptname = argv[0];
3280af22 2054 if (PL_e_script) {
6224f72b
GS
2055 argc++,argv--;
2056 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2057 }
bd61b366 2058 else if (scriptname == NULL) {
6224f72b
GS
2059#ifdef MSDOS
2060 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2061 moreswitches("h");
6224f72b
GS
2062#endif
2063 scriptname = "-";
2064 }
2065
b7975bdd 2066 assert (!PL_tainted);
2cace6ac 2067 init_perllib();
6224f72b 2068
a52eba0e 2069 {
f20b2998 2070 bool suidscript = FALSE;
829372d3 2071
cc69b689 2072 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2073
2f9285f8 2074 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2075 linestr_sv, rsfp);
6224f72b 2076
64ca3a65 2077#ifndef PERL_MICRO
a52eba0e
NC
2078# if defined(SIGCHLD) || defined(SIGCLD)
2079 {
2080# ifndef SIGCHLD
2081# define SIGCHLD SIGCLD
2082# endif
2083 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2084 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2085 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2086 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2087 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2088 }
0b5b802d 2089 }
a52eba0e 2090# endif
64ca3a65 2091#endif
0b5b802d 2092
737c24fc 2093 if (doextract) {
faef540c 2094
f20b2998 2095 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2096 setuid scripts. */
2097 forbid_setid('x', suidscript);
f20b2998 2098 /* Hence you can't get here if suidscript is true */
faef540c 2099
2f9285f8 2100 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2101 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2102 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2103 }
f4c556ac 2104 }
6224f72b 2105
ea726b52 2106 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2107 CvUNIQUE_on(PL_compcv);
2108
dd2155a4 2109 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2110
dd69841b
BB
2111 PL_isarev = newHV();
2112
0c4f7ff0 2113 boot_core_PerlIO();
6224f72b 2114 boot_core_UNIVERSAL();
e1a479c5 2115 boot_core_mro();
4a5df386 2116 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2117
2118 if (xsinit)
acfe0abc 2119 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2120#ifndef PERL_MICRO
d0d72822 2121#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2122 init_os_extras();
6224f72b 2123#endif
64ca3a65 2124#endif
6224f72b 2125
29209bc5 2126#ifdef USE_SOCKS
1b9c9cf5
DH
2127# ifdef HAS_SOCKS5_INIT
2128 socks5_init(argv[0]);
2129# else
29209bc5 2130 SOCKSinit(argv[0]);
1b9c9cf5 2131# endif
ac27b0f5 2132#endif
29209bc5 2133
6224f72b
GS
2134 init_predump_symbols();
2135 /* init_postdump_symbols not currently designed to be called */
2136 /* more than once (ENV isn't cleared first, for example) */
2137 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2138 if (!PL_do_undump)
6224f72b
GS
2139 init_postdump_symbols(argc,argv,env);
2140
27da23d5
JH
2141 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2142 * or explicitly in some platforms.
085a54d9 2143 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2144 * look like the user wants to use UTF-8. */
a0fd4948 2145#if defined(__SYMBIAN32__)
27da23d5
JH
2146 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2147#endif
e27b5b51 2148# ifndef PERL_IS_MINIPERL
06e66572
JH
2149 if (PL_unicode) {
2150 /* Requires init_predump_symbols(). */
a05d7ebb 2151 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2152 IO* io;
2153 PerlIO* fp;
2154 SV* sv;
2155
a05d7ebb 2156 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2157 * and the default open disciplines. */
a05d7ebb
JH
2158 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2159 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2160 (fp = IoIFP(io)))
2161 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2162 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2163 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2164 (fp = IoOFP(io)))
2165 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2166 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2167 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2168 (fp = IoOFP(io)))
2169 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2170 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2171 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2172 SVt_PV)))) {
a05d7ebb
JH
2173 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2174 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2175 if (in) {
2176 if (out)
76f68e9b 2177 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2178 else
76f68e9b 2179 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2180 }
2181 else if (out)
76f68e9b 2182 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2183 SvSETMAGIC(sv);
2184 }
b310b053
JH
2185 }
2186 }
e27b5b51 2187#endif
b310b053 2188
c7030b81
NC
2189 {
2190 const char *s;
4ffa73a3
JH
2191 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2192 if (strEQ(s, "unsafe"))
2193 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2194 else if (strEQ(s, "safe"))
2195 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2196 else
2197 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2198 }
c7030b81 2199 }
4ffa73a3 2200
81d86705 2201#ifdef PERL_MAD
c7030b81
NC
2202 {
2203 const char *s;
81d86705
NC
2204 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2205 PL_madskills = 1;
2206 PL_minus_c = 1;
2207 if (!s || !s[0])
2208 PL_xmlfp = PerlIO_stdout();
2209 else {
2210 PL_xmlfp = PerlIO_open(s, "w");
2211 if (!PL_xmlfp)
2212 Perl_croak(aTHX_ "Can't open %s", s);
2213 }
1a9a51d4 2214 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2215 }
c7030b81
NC
2216 }
2217
2218 {
2219 const char *s;
81d86705
NC
2220 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2221 PL_madskills = atoi(s);
1a9a51d4 2222 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2223 }
c7030b81 2224 }
81d86705
NC
2225#endif
2226
8eaa0acf 2227 lex_start(linestr_sv, rsfp, 0);
219f7226 2228 PL_subname = newSVpvs("main");
6224f72b 2229
5486870f
DM
2230 if (add_read_e_script)
2231 filter_add(read_e_script, NULL);
2232
6224f72b
GS
2233 /* now parse the script */
2234
93189314 2235 SETERRNO(0,SS_NORMAL);
28ac2b49 2236 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2237 if (PL_minus_c)
cea2e8a9 2238 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2239 else {
cea2e8a9 2240 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2241 PL_origfilename);
6224f72b
GS
2242 }
2243 }
57843af0 2244 CopLINE_set(PL_curcop, 0);
03d9f026 2245 SET_CURSTASH(PL_defstash);
3280af22
NIS
2246 if (PL_e_script) {
2247 SvREFCNT_dec(PL_e_script);
a0714e2c 2248 PL_e_script = NULL;
6224f72b
GS
2249 }
2250
3280af22 2251 if (PL_do_undump)
6224f72b
GS
2252 my_unexec();
2253
57843af0
GS
2254 if (isWARN_ONCE) {
2255 SAVECOPFILE(PL_curcop);
2256 SAVECOPLINE(PL_curcop);
3280af22 2257 gv_check(PL_defstash);
57843af0 2258 }
6224f72b
GS
2259
2260 LEAVE;
2261 FREETMPS;
2262
2263#ifdef MYMALLOC
f6a607bc
RGS
2264 {
2265 const char *s;
6224f72b
GS
2266 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2267 dump_mstats("after compilation:");
f6a607bc 2268 }
6224f72b
GS
2269#endif
2270
2271 ENTER;
febb3a6d 2272 PL_restartjmpenv = NULL;
3280af22 2273 PL_restartop = 0;
312caa8e 2274 return NULL;
6224f72b
GS
2275}
2276
954c1994
GS
2277/*
2278=for apidoc perl_run
2279
2280Tells a Perl interpreter to run. See L<perlembed>.
2281
2282=cut
2283*/
2284
6224f72b 2285int
0cb96387 2286perl_run(pTHXx)
6224f72b 2287{
97aff369 2288 dVAR;
6224f72b 2289 I32 oldscope;
14dd3ad8 2290 int ret = 0;
db36c5a1 2291 dJMPENV;
6224f72b 2292
7918f24d
NC
2293 PERL_ARGS_ASSERT_PERL_RUN;
2294#ifndef MULTIPLICITY
ed6c66dd 2295 PERL_UNUSED_ARG(my_perl);
7918f24d 2296#endif
9d4ba2ae 2297
3280af22 2298 oldscope = PL_scopestack_ix;
96e176bf
CL
2299#ifdef VMS
2300 VMSISH_HUSHED = 0;
2301#endif
6224f72b 2302
14dd3ad8 2303 JMPENV_PUSH(ret);
6224f72b
GS
2304 switch (ret) {
2305 case 1:
2306 cxstack_ix = -1; /* start context stack again */
312caa8e 2307 goto redo_body;
14dd3ad8 2308 case 0: /* normal completion */
14dd3ad8
GS
2309 redo_body:
2310 run_body(oldscope);
14dd3ad8
GS
2311 /* FALL THROUGH */
2312 case 2: /* my_exit() */
3280af22 2313 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2314 LEAVE;
2315 FREETMPS;
03d9f026 2316 SET_CURSTASH(PL_defstash);
3a1ee7e8 2317 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2318 PL_endav && !PL_minus_c) {
ca7b837b 2319 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2320 call_list(oldscope, PL_endav);
9ebf26ad 2321 }
6224f72b
GS
2322#ifdef MYMALLOC
2323 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2324 dump_mstats("after execution: ");
2325#endif
37038d91 2326 ret = STATUS_EXIT;
14dd3ad8 2327 break;
6224f72b 2328 case 3:
312caa8e
CS
2329 if (PL_restartop) {
2330 POPSTACK_TO(PL_mainstack);
2331 goto redo_body;
6224f72b 2332 }
bf49b057 2333 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2334 FREETMPS;
14dd3ad8
GS
2335 ret = 1;
2336 break;
6224f72b
GS
2337 }
2338
14dd3ad8
GS
2339 JMPENV_POP;
2340 return ret;
312caa8e
CS
2341}
2342
dd374669 2343STATIC void
14dd3ad8
GS
2344S_run_body(pTHX_ I32 oldscope)
2345{
97aff369 2346 dVAR;
6224f72b 2347 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2348 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2349
3280af22 2350 if (!PL_restartop) {
81d86705
NC
2351#ifdef PERL_MAD
2352 if (PL_xmlfp) {
2353 xmldump_all();
2354 exit(0); /* less likely to core dump than my_exit(0) */
2355 }
2356#endif
cf2782cd 2357#ifdef DEBUGGING
f0e3f042
CS
2358 if (DEBUG_x_TEST || DEBUG_B_TEST)
2359 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2360 if (!DEBUG_q_TEST)
2361 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2362#endif
6224f72b 2363
3280af22 2364 if (PL_minus_c) {
bf49b057 2365 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2366 my_exit(0);
2367 }
3280af22 2368 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2369 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2370 if (PL_initav) {
ca7b837b 2371 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2372 call_list(oldscope, PL_initav);
9ebf26ad 2373 }
f1fac472
NC
2374#ifdef PERL_DEBUG_READONLY_OPS
2375 Perl_pending_Slabs_to_ro(aTHX);
2376#endif
6224f72b
GS
2377 }
2378
2379 /* do it */
2380
ca7b837b 2381 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2382
3280af22 2383 if (PL_restartop) {
febb3a6d 2384 PL_restartjmpenv = NULL;
533c011a 2385 PL_op = PL_restartop;
3280af22 2386 PL_restartop = 0;
cea2e8a9 2387 CALLRUNOPS(aTHX);
6224f72b 2388 }
3280af22
NIS
2389 else if (PL_main_start) {
2390 CvDEPTH(PL_main_cv) = 1;
533c011a 2391 PL_op = PL_main_start;
cea2e8a9 2392 CALLRUNOPS(aTHX);
6224f72b 2393 }
f6b3007c
JH
2394 my_exit(0);
2395 /* NOTREACHED */
6224f72b
GS
2396}
2397
954c1994 2398/*
ccfc67b7
JH
2399=head1 SV Manipulation Functions
2400
954c1994
GS
2401=for apidoc p||get_sv
2402
64ace3f8
NC
2403Returns the SV of the specified Perl scalar. C<flags> are passed to
2404C<gv_fetchpv>. If C<GV_ADD> is set and the
2405Perl variable does not exist then it will be created. If C<flags> is zero
2406and the variable does not exist then NULL is returned.
954c1994
GS
2407
2408=cut
2409*/
2410
6224f72b 2411SV*
64ace3f8 2412Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2413{
2414 GV *gv;
7918f24d
NC
2415
2416 PERL_ARGS_ASSERT_GET_SV;
2417
64ace3f8 2418 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2419 if (gv)
2420 return GvSV(gv);
a0714e2c 2421 return NULL;
6224f72b
GS
2422}
2423
954c1994 2424/*
ccfc67b7
JH
2425=head1 Array Manipulation Functions
2426
954c1994
GS
2427=for apidoc p||get_av
2428
f0b90de1
SF
2429Returns the AV of the specified Perl global or package array with the given
2430name (so it won't work on lexical variables). C<flags> are passed
2431to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2432Perl variable does not exist then it will be created. If C<flags> is zero
2433and the variable does not exist then NULL is returned.
954c1994 2434
f0b90de1
SF
2435Perl equivalent: C<@{"$name"}>.
2436
954c1994
GS
2437=cut
2438*/
2439
6224f72b 2440AV*
cbfd0a87 2441Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2442{
cbfd0a87 2443 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2444
2445 PERL_ARGS_ASSERT_GET_AV;
2446
cbfd0a87 2447 if (flags)
6224f72b
GS
2448 return GvAVn(gv);
2449 if (gv)
2450 return GvAV(gv);
7d49f689 2451 return NULL;
6224f72b
GS
2452}
2453
954c1994 2454/*
ccfc67b7
JH
2455=head1 Hash Manipulation Functions
2456
954c1994
GS
2457=for apidoc p||get_hv
2458
6673a63c
NC
2459Returns the HV of the specified Perl hash. C<flags> are passed to
2460C<gv_fetchpv>. If C<GV_ADD> is set and the
2461Perl variable does not exist then it will be created. If C<flags> is zero
2462and the variable does not exist then NULL is returned.
954c1994
GS
2463
2464=cut
2465*/
2466
6224f72b 2467HV*
6673a63c 2468Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2469{
6673a63c 2470 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2471
2472 PERL_ARGS_ASSERT_GET_HV;
2473
6673a63c 2474 if (flags)
a0d0e21e
LW
2475 return GvHVn(gv);
2476 if (gv)
2477 return GvHV(gv);
5c284bb0 2478 return NULL;
a0d0e21e
LW
2479}
2480
954c1994 2481/*
ccfc67b7
JH
2482=head1 CV Manipulation Functions
2483
780a5241
NC
2484=for apidoc p||get_cvn_flags
2485
2486Returns the CV of the specified Perl subroutine. C<flags> are passed to
2487C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2488exist then it will be declared (which has the same effect as saying
2489C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2490then NULL is returned.
2491
954c1994
GS
2492=for apidoc p||get_cv
2493
780a5241 2494Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2495
2496=cut
2497*/
2498
a0d0e21e 2499CV*
780a5241 2500Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2501{
780a5241 2502 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2503 /* XXX this is probably not what they think they're getting.
2504 * It has the same effect as "sub name;", i.e. just a forward
2505 * declaration! */
7918f24d
NC
2506
2507 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2508
780a5241 2509 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2510 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2511 return newSUB(start_subparse(FALSE, 0),
780a5241 2512 newSVOP(OP_CONST, 0, sv),
5f66b61c 2513 NULL, NULL);
780a5241 2514 }
a0d0e21e 2515 if (gv)
8ebc5c01 2516 return GvCVu(gv);
601f1833 2517 return NULL;
a0d0e21e
LW
2518}
2519
2c67934f
NC
2520/* Nothing in core calls this now, but we can't replace it with a macro and
2521 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2522CV*
2523Perl_get_cv(pTHX_ const char *name, I32 flags)
2524{
7918f24d
NC
2525 PERL_ARGS_ASSERT_GET_CV;
2526
780a5241
NC
2527 return get_cvn_flags(name, strlen(name), flags);
2528}
2529
79072805
LW
2530/* Be sure to refetch the stack pointer after calling these routines. */
2531
954c1994 2532/*
ccfc67b7
JH
2533
2534=head1 Callback Functions
2535
954c1994
GS
2536=for apidoc p||call_argv
2537
f0b90de1
SF
2538Performs a callback to the specified named and package-scoped Perl subroutine
2539with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2540
2541Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2542
2543=cut
2544*/
2545
a0d0e21e 2546I32
8f42b153 2547Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2548
8ac85365
NIS
2549 /* See G_* flags in cop.h */
2550 /* null terminated arg list */
8990e307 2551{
97aff369 2552 dVAR;
a0d0e21e 2553 dSP;
8990e307 2554
7918f24d
NC
2555 PERL_ARGS_ASSERT_CALL_ARGV;
2556
924508f0 2557 PUSHMARK(SP);
a0d0e21e 2558 if (argv) {
8990e307 2559 while (*argv) {
6e449a3a 2560 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2561 argv++;
2562 }
a0d0e21e 2563 PUTBACK;
8990e307 2564 }
864dbfa3 2565 return call_pv(sub_name, flags);
8990e307
LW
2566}
2567
954c1994
GS
2568/*
2569=for apidoc p||call_pv
2570
2571Performs a callback to the specified Perl sub. See L<perlcall>.
2572
2573=cut
2574*/
2575
a0d0e21e 2576I32
864dbfa3 2577Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2578 /* name of the subroutine */
2579 /* See G_* flags in cop.h */
a0d0e21e 2580{
7918f24d
NC
2581 PERL_ARGS_ASSERT_CALL_PV;
2582
0da0e728 2583 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2584}
2585
954c1994
GS
2586/*
2587=for apidoc p||call_method
2588
2589Performs a callback to the specified Perl method. The blessed object must
2590be on the stack. See L<perlcall>.
2591
2592=cut
2593*/
2594
a0d0e21e 2595I32
864dbfa3 2596Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2597 /* name of the subroutine */
2598 /* See G_* flags in cop.h */
a0d0e21e 2599{
46ca9bac 2600 STRLEN len;
7918f24d
NC
2601 PERL_ARGS_ASSERT_CALL_METHOD;
2602
46ca9bac 2603 len = strlen(methname);
2604
2605 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2606 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2607}
2608
2609/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2610/*
2611=for apidoc p||call_sv
2612
2613Performs a callback to the Perl sub whose name is in the SV. See
2614L<perlcall>.
2615
2616=cut
2617*/
2618
a0d0e21e 2619I32
001d637e 2620Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2621 /* See G_* flags in cop.h */
a0d0e21e 2622{
27da23d5 2623 dVAR; dSP;
a0d0e21e 2624 LOGOP myop; /* fake syntax tree node */
968b3946 2625 UNOP method_op;
aa689395 2626 I32 oldmark;
8ea43dc8 2627 VOL I32 retval = 0;
a0d0e21e 2628 I32 oldscope;
54310121 2629 bool oldcatch = CATCH_GET;
6224f72b 2630 int ret;
c4420975 2631 OP* const oldop = PL_op;
db36c5a1 2632 dJMPENV;
1e422769 2633
7918f24d
NC
2634 PERL_ARGS_ASSERT_CALL_SV;
2635
a0d0e21e
LW
2636 if (flags & G_DISCARD) {
2637 ENTER;
2638 SAVETMPS;
2639 }
2f8edad0
NC
2640 if (!(flags & G_WANT)) {
2641 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2642 */
2643 flags |= G_SCALAR;
2644 }
a0d0e21e 2645
aa689395 2646 Zero(&myop, 1, LOGOP);
5f66b61c 2647 myop.op_next = NULL;
f51d4af5 2648 if (!(flags & G_NOARGS))
aa689395 2649 myop.op_flags |= OPf_STACKED;
4f911530 2650 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2651 SAVEOP();
533c011a 2652 PL_op = (OP*)&myop;
aa689395 2653
3280af22
NIS
2654 EXTEND(PL_stack_sp, 1);
2655 *++PL_stack_sp = sv;
aa689395 2656 oldmark = TOPMARK;
3280af22 2657 oldscope = PL_scopestack_ix;
a0d0e21e 2658
3280af22 2659 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2660 /* Handle first BEGIN of -d. */
3280af22 2661 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2662 /* Try harder, since this may have been a sighandler, thus
2663 * curstash may be meaningless. */
ea726b52 2664 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2665 && !(flags & G_NODEBUG))
533c011a 2666 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2667
968b3946
GS
2668 if (flags & G_METHOD) {
2669 Zero(&method_op, 1, UNOP);
2670 method_op.op_next = PL_op;
2671 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2672 method_op.op_type = OP_METHOD;
968b3946 2673 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2674 myop.op_type = OP_ENTERSUB;
f39d0b86 2675 PL_op = (OP*)&method_op;
968b3946
GS
2676 }
2677
312caa8e 2678 if (!(flags & G_EVAL)) {
0cdb2077 2679 CATCH_SET(TRUE);
d6f07c05 2680 CALL_BODY_SUB((OP*)&myop);
312caa8e 2681 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2682 CATCH_SET(oldcatch);
312caa8e
CS
2683 }
2684 else {
d78bda3d 2685 myop.op_other = (OP*)&myop;
3280af22 2686 PL_markstack_ptr--;
edb2152a 2687 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2688 PL_markstack_ptr++;
a0d0e21e 2689
14dd3ad8 2690 JMPENV_PUSH(ret);
edb2152a 2691
6224f72b
GS
2692 switch (ret) {
2693 case 0:
14dd3ad8 2694 redo_body:
d6f07c05 2695 CALL_BODY_SUB((OP*)&myop);
312caa8e 2696 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2697 if (!(flags & G_KEEPERR)) {
ab69dbc2 2698 CLEAR_ERRSV();
8433848b 2699 }
a0d0e21e 2700 break;
6224f72b 2701 case 1:
f86702cc 2702 STATUS_ALL_FAILURE;
a0d0e21e 2703 /* FALL THROUGH */
6224f72b 2704 case 2:
a0d0e21e 2705 /* my_exit() was called */
03d9f026 2706 SET_CURSTASH(PL_defstash);
a0d0e21e 2707 FREETMPS;
14dd3ad8 2708 JMPENV_POP;
f86702cc 2709 my_exit_jump();
a0d0e21e 2710 /* NOTREACHED */
6224f72b 2711 case 3:
3280af22 2712 if (PL_restartop) {
febb3a6d 2713 PL_restartjmpenv = NULL;
533c011a 2714 PL_op = PL_restartop;
3280af22 2715 PL_restartop = 0;
312caa8e 2716 goto redo_body;
a0d0e21e 2717 }
3280af22 2718 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2719 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2720 retval = 0;
2721 else {
2722 retval = 1;
3280af22 2723 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2724 }
312caa8e 2725 break;
a0d0e21e 2726 }
a0d0e21e 2727
edb2152a
NC
2728 if (PL_scopestack_ix > oldscope)
2729 delete_eval_scope();
14dd3ad8 2730 JMPENV_POP;
a0d0e21e 2731 }
1e422769 2732
a0d0e21e 2733 if (flags & G_DISCARD) {
3280af22 2734 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2735 retval = 0;
2736 FREETMPS;
2737 LEAVE;
2738 }
533c011a 2739 PL_op = oldop;
a0d0e21e
LW
2740 return retval;
2741}
2742
6e72f9df 2743/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2744
954c1994
GS
2745/*
2746=for apidoc p||eval_sv
2747
be064c4a
DM
2748Tells Perl to C<eval> the string in the SV. It supports the same flags
2749as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2750
2751=cut
2752*/
2753
a0d0e21e 2754I32
864dbfa3 2755Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2756
8ac85365 2757 /* See G_* flags in cop.h */
a0d0e21e 2758{
97aff369 2759 dVAR;
924508f0 2760 dSP;
a0d0e21e 2761 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2762 VOL I32 oldmark = SP - PL_stack_base;
2763 VOL I32 retval = 0;
6224f72b 2764 int ret;
c4420975 2765 OP* const oldop = PL_op;
db36c5a1 2766 dJMPENV;
84902520 2767
7918f24d
NC
2768 PERL_ARGS_ASSERT_EVAL_SV;
2769
4633a7c4
LW
2770 if (flags & G_DISCARD) {
2771 ENTER;
2772 SAVETMPS;
2773 }
2774
462e5cf6 2775 SAVEOP();
533c011a
NIS
2776 PL_op = (OP*)&myop;
2777 Zero(PL_op, 1, UNOP);
3280af22
NIS
2778 EXTEND(PL_stack_sp, 1);
2779 *++PL_stack_sp = sv;
79072805 2780
4633a7c4
LW
2781 if (!(flags & G_NOARGS))
2782 myop.op_flags = OPf_STACKED;
5f66b61c 2783 myop.op_next = NULL;
6e72f9df 2784 myop.op_type = OP_ENTEREVAL;
4f911530 2785 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2786 if (flags & G_KEEPERR)
2787 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2788
dedbcade
DM
2789 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2790 * before a PUSHEVAL, which corrupts the stack after a croak */
2791 TAINT_PROPER("eval_sv()");
2792
14dd3ad8 2793 JMPENV_PUSH(ret);
6224f72b
GS
2794 switch (ret) {
2795 case 0:
14dd3ad8 2796 redo_body:
2ba65d5f
DM
2797 if (PL_op == (OP*)(&myop)) {
2798 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2799 if (!PL_op)
2800 goto fail; /* failed in compilation */
2801 }
4aca2f62 2802 CALLRUNOPS(aTHX);
312caa8e 2803 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2804 if (!(flags & G_KEEPERR)) {
ab69dbc2 2805 CLEAR_ERRSV();
8433848b 2806 }
4633a7c4 2807 break;
6224f72b 2808 case 1:
f86702cc 2809 STATUS_ALL_FAILURE;
4633a7c4 2810 /* FALL THROUGH */
6224f72b 2811 case 2:
4633a7c4 2812 /* my_exit() was called */
03d9f026 2813 SET_CURSTASH(PL_defstash);
4633a7c4 2814 FREETMPS;
14dd3ad8 2815 JMPENV_POP;
f86702cc 2816 my_exit_jump();
4633a7c4 2817 /* NOTREACHED */
6224f72b 2818 case 3:
3280af22 2819 if (PL_restartop) {
febb3a6d 2820 PL_restartjmpenv = NULL;
533c011a 2821 PL_op = PL_restartop;
3280af22 2822 PL_restartop = 0;
312caa8e 2823 goto redo_body;
4633a7c4 2824 }
4aca2f62 2825 fail:
3280af22 2826 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2827 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2828 retval = 0;
2829 else {
2830 retval = 1;
3280af22 2831 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2832 }
312caa8e 2833 break;
4633a7c4
LW
2834 }
2835
14dd3ad8 2836 JMPENV_POP;
4633a7c4 2837 if (flags & G_DISCARD) {
3280af22 2838 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2839 retval = 0;
2840 FREETMPS;
2841 LEAVE;
2842 }
533c011a 2843 PL_op = oldop;
4633a7c4
LW
2844 return retval;
2845}
2846
954c1994
GS
2847/*
2848=for apidoc p||eval_pv
2849
2850Tells Perl to C<eval> the given string and return an SV* result.
2851
2852=cut
2853*/
2854
137443ea 2855SV*
864dbfa3 2856Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2857{
97aff369 2858 dVAR;
137443ea
PP
2859 dSP;
2860 SV* sv = newSVpv(p, 0);
2861
7918f24d
NC
2862 PERL_ARGS_ASSERT_EVAL_PV;
2863
864dbfa3 2864 eval_sv(sv, G_SCALAR);
137443ea
PP
2865 SvREFCNT_dec(sv);
2866
2867 SPAGAIN;
2868 sv = POPs;
2869 PUTBACK;
2870
2d8e6c8d 2871 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2872 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2873 }
137443ea
PP
2874
2875 return sv;
2876}
2877
4633a7c4
LW
2878/* Require a module. */
2879
954c1994 2880/*
ccfc67b7
JH
2881=head1 Embedding Functions
2882
954c1994
GS
2883=for apidoc p||require_pv
2884
7d3fb230
BS
2885Tells Perl to C<require> the file named by the string argument. It is
2886analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2887implemented that way; consider using load_module instead.
954c1994 2888
7d3fb230 2889=cut */
954c1994 2890
4633a7c4 2891void
864dbfa3 2892Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2893{
97aff369 2894 dVAR;
d3acc0f7 2895 dSP;
97aff369 2896 SV* sv;
7918f24d
NC
2897
2898 PERL_ARGS_ASSERT_REQUIRE_PV;
2899
e788e7d3 2900 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2901 PUTBACK;
be41e5d9
NC
2902 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2903 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2904 SPAGAIN;
2905 POPSTACK;
79072805
LW
2906}
2907
76e3520e 2908STATIC void
e1ec3a88 2909S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2910{
ab821d7f 2911 /* This message really ought to be max 23 lines.
75c72d73 2912 * Removed -h because the user already knows that option. Others? */
fb73857a 2913
1566c39d
NC
2914 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2915 minimum of 509 character string literals. */
27da23d5 2916 static const char * const usage_msg[] = {
1566c39d
NC
2917" -0[octal] specify record separator (\\0, if no argument)\n"
2918" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2919" -C[number/list] enables the listed Unicode features\n"
2920" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2921" -d[:debugger] run program under debugger\n"
2922" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2923" -e program one line of program (several -e's allowed, omit programfile)\n"
2924" -E program like -e, but enables all optional features\n"
2925" -f don't do $sitelib/sitecustomize.pl at startup\n"
2926" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2927" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2928" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2929" -l[octal] enable line ending processing, specifies line terminator\n"
2930" -[mM][-]module execute \"use/no module...\" before executing program\n"
2931" -n assume \"while (<>) { ... }\" loop around program\n"
2932" -p assume loop like -n but print line also, like sed\n"
2933" -s enable rudimentary parsing for switches after programfile\n"
2934" -S look for programfile using PATH environment variable\n",
2935" -t enable tainting warnings\n"
2936" -T enable tainting checks\n"
2937" -u dump core after parsing program\n"
2938" -U allow unsafe operations\n"
2939" -v print version, patchlevel and license\n"
2940" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2941" -w enable many useful warnings\n"
1566c39d
NC
2942" -W enable all warnings\n"
2943" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2944" -X disable all warnings\n"
2945" \n"
2946"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2947NULL
2948};
27da23d5 2949 const char * const *p = usage_msg;
1566c39d 2950 PerlIO *out = PerlIO_stdout();
fb73857a 2951
7918f24d
NC
2952 PERL_ARGS_ASSERT_USAGE;
2953
1566c39d
NC
2954 PerlIO_printf(out,
2955 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2956 name);
fb73857a 2957 while (*p)
1566c39d 2958 PerlIO_puts(out, *p++);
4633a7c4
LW
2959}
2960
b4ab917c
DM
2961/* convert a string of -D options (or digits) into an int.
2962 * sets *s to point to the char after the options */
2963
2964#ifdef DEBUGGING
2965int
e1ec3a88 2966Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2967{
27da23d5 2968 static const char * const usage_msgd[] = {
651b8f1a
NC
2969 " Debugging flag values: (see also -d)\n"
2970 " p Tokenizing and parsing (with v, displays parse stack)\n"
2971 " s Stack snapshots (with v, displays all stacks)\n"
2972 " l Context (loop) stack processing\n"
2973 " t Trace execution\n"
2974 " o Method and overloading resolution\n",
2975 " c String/numeric conversions\n"
2976 " P Print profiling info, source file input state\n"
2977 " m Memory and SV allocation\n"
2978 " f Format processing\n"
2979 " r Regular expression parsing and execution\n"
2980 " x Syntax tree dump\n",
2981 " u Tainting checks\n"
2982 " H Hash dump -- usurps values()\n"
2983 " X Scratchpad allocation\n"
2984 " D Cleaning up\n"
2985 " T Tokenising\n"
2986 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2987 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2988 " v Verbose: use in conjunction with other flags\n"
2989 " C Copy On Write\n"
2990 " A Consistency checks on internal structures\n"
2991 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2992 " M trace smart match resolution\n"
2993 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2994 NULL
2995 };
b4ab917c 2996 int i = 0;
7918f24d
NC
2997
2998 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2999
b4ab917c
DM
3000 if (isALPHA(**s)) {
3001 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3002 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3003
3004 for (; isALNUM(**s); (*s)++) {
c4420975 3005 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3006 if (d)
3007 i |= 1 << (d - debopts);
3008 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3009 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3010 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3011 }
3012 }
e6e64d9b 3013 else if (isDIGIT(**s)) {
b4ab917c
DM
3014 i = atoi(*s);
3015 for (; isALNUM(**s); (*s)++) ;
3016 }
ddcf8bc1 3017 else if (givehelp) {
06e869a4 3018 const char *const *p = usage_msgd;
651b8f1a 3019 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3020 }
b4ab917c
DM
3021# ifdef EBCDIC
3022 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3023 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3024 "-Dp not implemented on this platform\n");
3025# endif
3026 return i;
3027}
3028#endif
3029
79072805
LW
3030/* This routine handles any switches that can be given during run */
3031
c7030b81
NC
3032const char *
3033Perl_moreswitches(pTHX_ const char *s)
79072805 3034{
27da23d5 3035 dVAR;
84c133a0 3036 UV rschar;
0544e6df 3037 const char option = *s; /* used to remember option in -m/-M code */
79072805 3038
7918f24d
NC
3039 PERL_ARGS_ASSERT_MORESWITCHES;
3040
79072805
LW
3041 switch (*s) {
3042 case '0':
a863c7d1 3043 {
f2095865 3044 I32 flags = 0;
a3b680e6 3045 STRLEN numlen;
f2095865
JH
3046
3047 SvREFCNT_dec(PL_rs);
3048 if (s[1] == 'x' && s[2]) {
a3b680e6 3049 const char *e = s+=2;
f2095865
JH
3050 U8 *tmps;
3051
a3b680e6
AL
3052 while (*e)
3053 e++;
f2095865
JH
3054 numlen = e - s;
3055 flags = PERL_SCAN_SILENT_ILLDIGIT;
3056 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3057 if (s + numlen < e) {
3058 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3059 numlen = 0;
3060 s--;
3061 }
396482e1 3062 PL_rs = newSVpvs("");
c5661c80 3063 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3064 tmps = (U8*)SvPVX(PL_rs);
3065 uvchr_to_utf8(tmps, rschar);
3066 SvCUR_set(PL_rs, UNISKIP(rschar));
3067 SvUTF8_on(PL_rs);
3068 }
3069 else {
3070 numlen = 4;
3071 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3072 if (rschar & ~((U8)~0))
3073 PL_rs = &PL_sv_undef;
3074 else if (!rschar && numlen >= 2)
396482e1 3075 PL_rs = newSVpvs("");
f2095865
JH
3076 else {
3077 char ch = (char)rschar;
3078 PL_rs = newSVpvn(&ch, 1);
3079 }
3080 }
64ace3f8 3081 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3082 return s + numlen;
a863c7d1 3083 }
46487f74 3084 case 'C':
a05d7ebb 3085 s++;
dd374669 3086 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3087 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3088 PL_utf8cache = -1;
46487f74 3089 return s;
2304df62 3090 case 'F':
3280af22 3091 PL_minus_F = TRUE;
ebce5377
RGS
3092 PL_splitstr = ++s;
3093 while (*s && !isSPACE(*s)) ++s;
e49e380e 3094 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3095 return s;
79072805 3096 case 'a':
3280af22 3097 PL_minus_a = TRUE;
79072805
LW
3098 s++;
3099 return s;
3100 case 'c':
3280af22 3101 PL_minus_c = TRUE;
79072805
LW
3102 s++;
3103 return s;
3104 case 'd':
f20b2998 3105 forbid_setid('d', FALSE);
4633a7c4 3106 s++;
2cbb2ee1
RGS
3107
3108 /* -dt indicates to the debugger that threads will be used */
3109 if (*s == 't' && !isALNUM(s[1])) {
3110 ++s;
3111 my_setenv("PERL5DB_THREADED", "1");
3112 }
3113
70c94a19
RR
3114 /* The following permits -d:Mod to accepts arguments following an =
3115 in the fashion that -MSome::Mod does. */
3116 if (*s == ':' || *s == '=') {
b19934fb
NC
3117 const char *start;
3118 const char *end;
3119 SV *sv;
3120
3121 if (*++s == '-') {
3122 ++s;
3123 sv = newSVpvs("no Devel::");
3124 } else {
3125 sv = newSVpvs("use Devel::");
3126 }
3127
3128 start = s;
3129 end = s + strlen(s);
f85893a1 3130
b19934fb 3131 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3132 while(isALNUM(*s) || *s==':') ++s;
3133 if (*s != '=')
f85893a1 3134 sv_catpvn(sv, start, end - start);
70c94a19
RR
3135 else {
3136 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3137 /* Don't use NUL as q// delimiter here, this string goes in the
3138 * environment. */
3139 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3140 }
f85893a1 3141 s = end;
184f32ec 3142 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3143 SvREFCNT_dec(sv);
4633a7c4 3144 }
ed094faf 3145 if (!PL_perldb) {
3280af22 3146 PL_perldb = PERLDB_ALL;
a0d0e21e 3147 init_debugger();
ed094faf 3148 }
79072805
LW
3149 return s;
3150 case 'D':
0453d815 3151 {
79072805 3152#ifdef DEBUGGING
f20b2998 3153 forbid_setid('D', FALSE);
b4ab917c 3154 s++;
dd374669 3155 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3156#else /* !DEBUGGING */
0453d815 3157 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3158 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3159 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3160 for (s++; isALNUM(*s); s++) ;
79072805 3161#endif
79072805 3162 return s;
0453d815 3163 }
4633a7c4 3164 case 'h':
ac27b0f5 3165 usage(PL_origargv[0]);
7ca617d0 3166 my_exit(0);
79072805 3167 case 'i':
43c5f42d 3168 Safefree(PL_inplace);
c030f24b
GH
3169#if defined(__CYGWIN__) /* do backup extension automagically */
3170 if (*(s+1) == '\0') {
c86a4f2e 3171 PL_inplace = savepvs(".bak");
c030f24b
GH
3172 return s+1;
3173 }
3174#endif /* __CYGWIN__ */
5ef5d758 3175 {
d4c19fe8 3176 const char * const start = ++s;
5ef5d758
NC
3177 while (*s && !isSPACE(*s))
3178 ++s;
3179
3180 PL_inplace = savepvn(start, s - start);
3181 }
7b8d334a 3182 if (*s) {
5ef5d758 3183 ++s;
7b8d334a 3184 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3185 s++;
7b8d334a 3186 }
fb73857a 3187 return s;
4e49a025 3188 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3189 forbid_setid('I', FALSE);
fb73857a
PP
3190 ++s;
3191 while (*s && isSPACE(*s))
3192 ++s;
3193 if (*s) {
c7030b81 3194 const char *e, *p;
0df16ed7
GS
3195 p = s;
3196 /* ignore trailing spaces (possibly followed by other switches) */
3197 do {
3198 for (e = p; *e && !isSPACE(*e); e++) ;
3199 p = e;
3200 while (isSPACE(*p))
3201 p++;
3202 } while (*p && *p != '-');
55b4bc1c 3203 incpush(s, e-s,
e28f3139 3204 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3205 s = p;
3206 if (*s == '-')
3207 s++;
79072805
LW
3208 }
3209 else
a67e862a 3210 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3211 return s;
79072805 3212 case 'l':
3280af22 3213 PL_minus_l = TRUE;
79072805 3214 s++;
7889fe52
NIS
3215 if (PL_ors_sv) {
3216 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3217 PL_ors_sv = NULL;
7889fe52 3218 }
79072805 3219 if (isDIGIT(*s)) {
53305cf1 3220 I32 flags = 0;
a3b680e6 3221 STRLEN numlen;
396482e1 3222 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3223 numlen = 3 + (*s == '0');
3224 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3225 s += numlen;
3226 }
3227 else {
8bfdd7d9 3228 if (RsPARA(PL_rs)) {
396482e1 3229 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3230 }
3231 else {
8bfdd7d9 3232 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3233 }
79072805
LW
3234 }
3235 return s;
1a30305b 3236 case 'M':
f20b2998 3237 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3238 /* FALL THROUGH */
3239 case 'm':
f20b2998 3240 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3241 if (*++s) {
c7030b81 3242 const char *start;
b64cb68c 3243 const char *end;
11343788 3244 SV *sv;
e1ec3a88 3245 const char *use = "use ";
0544e6df 3246 bool colon = FALSE;
a5f75d66 3247 /* -M-foo == 'no foo' */
d0043bd1
NC
3248 /* Leading space on " no " is deliberate, to make both
3249 possibilities the same length. */
3250 if (*s == '-') { use = " no "; ++s; }
3251 sv = newSVpvn(use,4);
a5f75d66 3252 start = s;
1a30305b 3253 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3254 while(isALNUM(*s) || *s==':') {
3255 if( *s++ == ':' ) {
3256 if( *s == ':' )
3257 s++;
3258 else
3259 colon = TRUE;
3260 }
3261 }
3262 if (s == start)
3263 Perl_croak(aTHX_ "Module name required with -%c option",
3264 option);
3265 if (colon)
3266 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3267 "contains single ':'",
63da6837 3268 (int)(s - start), start, option);
b64cb68c 3269 end = s + strlen(s);
c07a80fd 3270 if (*s != '=') {
b64cb68c 3271 sv_catpvn(sv, start, end - start);
0544e6df 3272 if (option == 'm') {
c07a80fd 3273 if (*s != '\0')
cea2e8a9 3274 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3275 sv_catpvs( sv, " ()");
c07a80fd
PP
3276 }
3277 } else {
11343788 3278 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3279 /* Use NUL as q''-delimiter. */
3280 sv_catpvs(sv, " split(/,/,q\0");
3281 ++s;
3282 sv_catpvn(sv, s, end - s);
396482e1 3283 sv_catpvs(sv, "\0)");
c07a80fd 3284 }
b64cb68c 3285 s = end;
29a861e7 3286 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3287 }
3288 else
0544e6df 3289 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3290 return s;
79072805 3291 case 'n':
3280af22 3292 PL_minus_n = TRUE;
79072805
LW
3293 s++;
3294 return s;
3295 case 'p':
3280af22 3296 PL_minus_p = TRUE;
79072805
LW
3297 s++;
3298 return s;
3299 case 's':
f20b2998 3300 forbid_setid('s', FALSE);
3280af22 3301 PL_doswitches = TRUE;
79072805
LW
3302 s++;
3303 return s;
6537fe72 3304 case 't':
27a6968b 3305 case 'T':
6537fe72 3306 if (!PL_tainting)
27a6968b 3307 TOO_LATE_FOR(*s);
6537fe72 3308 s++;
463ee0b2 3309 return s;
79072805 3310 case 'u':
3280af22 3311 PL_do_undump = TRUE;
79072805
LW
3312 s++;
3313 return s;
3314 case 'U':
3280af22 3315 PL_unsafe = TRUE;
79072805
LW
3316 s++;
3317 return s;
3318 case 'v':
d7aa5382 3319 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3320 upg_version(PL_patchlevel, TRUE);
8e9464f1 3321#if !defined(DGUX)
46807d8e
YO
3322 {
3323 SV* level= vstringify(PL_patchlevel);
3324#ifdef PERL_PATCHNUM
23d483e2
NC
3325# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3326 SV *num = newSVpvs(PERL_PATCHNUM "*");
3327# else
3328 SV *num = newSVpvs(PERL_PATCHNUM);
3329# endif
46807d8e
YO
3330
3331 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3332 SvREFCNT_dec(level);
3333 level= num;
3334 } else {
d0a9311f 3335 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3336 SvREFCNT_dec(num);
3337 }
3338 #endif
3339 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3340 "\nThis is perl " STRINGIFY(PERL_REVISION)
3341 ", version " STRINGIFY(PERL_VERSION)
3342 ", subversion " STRINGIFY(PERL_SUBVERSION)
3343 " (%"SVf") built for " ARCHNAME, level
3344 );
46807d8e
YO
3345 SvREFCNT_dec(level);
3346 }
8e9464f1
JH
3347#else /* DGUX */
3348/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3349 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3350 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3351 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3352 PerlIO_printf(PerlIO_stdout(),
3353 Perl_form(aTHX_ " built under %s at %s %s\n",
3354 OSNAME, __DATE__, __TIME__));
3355 PerlIO_printf(PerlIO_stdout(),
3356 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3357 OSVERS));
8e9464f1 3358#endif /* !DGUX */
fb73857a
PP
3359#if defined(LOCAL_PATCH_COUNT)
3360 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3361 PerlIO_printf(PerlIO_stdout(),
3362 "\n(with %d registered patch%s, "
3363 "see perl -V for more detail)",
bb7a0f54 3364 LOCAL_PATCH_COUNT,
b0e47665 3365 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3366#endif
1a30305b 3367
b0e47665 3368 PerlIO_printf(PerlIO_stdout(),
010d7370 3369 "\n\nCopyright 1987-2011, Larry Wall\n");
79072805 3370#ifdef MSDOS
b0e47665
GS
3371 PerlIO_printf(PerlIO_stdout(),
3372 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3373#endif
3374#ifdef DJGPP
b0e47665
GS
3375 PerlIO_printf(PerlIO_stdout(),
3376 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3377 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3378#endif
79072805 3379#ifdef OS2
b0e47665
GS
3380 PerlIO_printf(PerlIO_stdout(),
3381 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3382 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3383#endif
79072805 3384#ifdef atarist
b0e47665
GS
3385 PerlIO_printf(PerlIO_stdout(),
3386 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3387#endif
a3f9223b 3388#ifdef __BEOS__
b0e47665
GS
3389 PerlIO_printf(PerlIO_stdout(),
3390 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3391#endif
1d84e8df 3392#ifdef MPE
b0e47665 3393 PerlIO_printf(PerlIO_stdout(),
e583a879 3394 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3395#endif
9d116dd7 3396#ifdef OEMVS
b0e47665
GS
3397 PerlIO_printf(PerlIO_stdout(),
3398 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3399#endif
495c5fdc 3400#ifdef __VOS__
b0e47665 3401 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3402 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3403#endif
092bebab 3404#ifdef __OPEN_VM
b0e47665
GS
3405 PerlIO_printf(PerlIO_stdout(),
3406 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3407#endif
a1a0e61e 3408#ifdef POSIX_BC
b0e47665
GS
3409 PerlIO_printf(PerlIO_stdout(),
3410 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3411#endif
f83d2536 3412#ifdef EPOC
b0e47665 3413 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3414 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3415#endif
e1caacb4 3416#ifdef UNDER_CE
b475b3e6
JH
3417 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3418 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3419 wce_hitreturn();
3420#endif
a0fd4948 3421#ifdef __SYMBIAN32__
27da23d5
JH
3422 PerlIO_printf(PerlIO_stdout(),
3423 "Symbian port by Nokia, 2004-2005\n");
3424#endif
baed7233
DL
3425#ifdef BINARY_BUILD_NOTICE
3426 BINARY_BUILD_NOTICE;
3427#endif
b0e47665
GS
3428 PerlIO_printf(PerlIO_stdout(),
3429 "\n\
79072805 3430Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3431GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3432Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3433this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3434Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3435 my_exit(0);
79072805 3436 case 'w':
b2e5e6ba 3437 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3438 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3439 }
599cee73
PM
3440 s++;
3441 return s;
3442 case 'W':
ac27b0f5 3443 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3444 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3445 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3446 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3447 s++;
3448 return s;
3449 case 'X':
ac27b0f5 3450 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3451 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3452 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3453 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3454 s++;
3455 return s;
a0d0e21e 3456 case '*':
79072805 3457 case ' ':
d3133c89
NC
3458 while( *s == ' ' )
3459 ++s;
3460 if (s[0] == '-') /* Additional switches on #! line. */
3461 return s+1;
79072805 3462 break;
a0d0e21e 3463 case '-':
79072805 3464 case 0:
51882d45 3465#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3466 case '\r':
3467#endif
79072805
LW
3468 case '\n':
3469 case '\t':
3470 break;
aa689395
PP
3471#ifdef ALTERNATE_SHEBANG
3472 case 'S': /* OS/2 needs -S on "extproc" line. */
3473 break;
3474#endif
79072805 3475 default:
cea2e8a9 3476 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3477 }
bd61b366 3478 return NULL;
79072805
LW
3479}
3480
3481/* compliments of Tom Christiansen */
3482
3483/* unexec() can be found in the Gnu emacs distribution */
ee580363 3484/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3485
3486void
864dbfa3 3487Perl_my_unexec(pTHX)
79072805 3488{
b37c2d43 3489 PERL_UNUSED_CONTEXT;
79072805 3490#ifdef UNEXEC
b37c2d43
AL
3491 SV * prog = newSVpv(BIN_EXP, 0);
3492 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3493 int status = 1;
79072805
LW
3494 extern int etext;
3495
396482e1 3496 sv_catpvs(prog, "/perl");
396482e1 3497 sv_catpvs(file, ".perldump");
79072805 3498
ee580363
GS
3499 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3500 /* unexec prints msg to stderr in case of failure */
6ad3d225 3501 PerlProc_exit(status);