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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
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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 *
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11 */
12
a0d0e21e 13/*
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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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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
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25 */
26
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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
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JH
37#ifdef NETWARE
38#include "nwutil.h"
011f1a1a
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39#endif
40
2982a345
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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
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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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110 MUTEX_INIT(&PL_my_ctx_mutex);
111# endif
e6827a76 112 }
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NC
113#if defined(USE_ITHREADS)
114 else
115#else
116 /* This always happens for non-ithreads */
117#endif
118 {
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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
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133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_SYS_INIT_BODY(argc, argv);
136}
137
138void
139Perl_sys_init3(int* argc, char*** argv, char*** env)
140{
4fc0badb 141 dVAR;
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142
143 PERL_ARGS_ASSERT_SYS_INIT3;
144
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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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155 if (!PL_veto_cleanup) {
156 PERL_SYS_TERM_BODY();
157 }
cbec8ebe
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158}
159
160
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161#ifdef PERL_IMPLICIT_SYS
162PerlInterpreter *
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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;
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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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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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180 PL_Env = ipE;
181 PL_StdIO = ipStd;
182 PL_LIO = ipLIO;
183 PL_Dir = ipD;
184 PL_Sock = ipS;
185 PL_Proc = ipP;
7cb608b5 186 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 187
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188 return my_perl;
189}
190#else
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191
192/*
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193=head1 Embedding Functions
194
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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);
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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
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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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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
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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
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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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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("");
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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
79072805 1475int
0cb96387 1476perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1477{
27da23d5 1478 dVAR;
6224f72b 1479 I32 oldscope;
6224f72b 1480 int ret;
db36c5a1 1481 dJMPENV;
8d063cd8 1482
7918f24d
NC
1483 PERL_ARGS_ASSERT_PERL_PARSE;
1484#ifndef MULTIPLICITY
ed6c66dd 1485 PERL_UNUSED_ARG(my_perl);
7918f24d 1486#endif
9d4ba2ae 1487
b0891165
JH
1488#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1489 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1490 * This MUST be done before any hash stores or fetches take place.
486ec47a 1491 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1492 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1493 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1494 if (!PL_rehash_seed_set)
1495 PL_rehash_seed = get_hash_seed();
b0891165 1496 {
9d4ba2ae 1497 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1498
1b6737cc
AL
1499 if (s && (atoi(s) == 1))
1500 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1501 }
1502#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1503
3280af22 1504 PL_origargc = argc;
e2975953 1505 PL_origargv = argv;
a0d0e21e 1506
a2722ac9
GA
1507 if (PL_origalen != 0) {
1508 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1509 }
1510 else {
3cb9023d
JH
1511 /* Set PL_origalen be the sum of the contiguous argv[]
1512 * elements plus the size of the env in case that it is
e9137a8e 1513 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1514 * as the maximum modifiable length of $0. In the worst case
1515 * the area we are able to modify is limited to the size of
43c32782 1516 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1517 * --jhi */
e1ec3a88 1518 const char *s = NULL;
54bfe034 1519 int i;
1b6737cc 1520 const UV mask =
7d8e7db3 1521 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1522 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1523 const UV aligned =
43c32782
JH
1524 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1525
1526 /* See if all the arguments are contiguous in memory. Note
1527 * that 'contiguous' is a loose term because some platforms
1528 * align the argv[] and the envp[]. If the arguments look
1529 * like non-aligned, assume that they are 'strictly' or
1530 * 'traditionally' contiguous. If the arguments look like
1531 * aligned, we just check that they are within aligned
1532 * PTRSIZE bytes. As long as no system has something bizarre
1533 * like the argv[] interleaved with some other data, we are
1534 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1535 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1536 while (*s) s++;
1537 for (i = 1; i < PL_origargc; i++) {
1538 if ((PL_origargv[i] == s + 1
43c32782 1539#ifdef OS2
c8941eeb 1540 || PL_origargv[i] == s + 2
43c32782 1541#endif
c8941eeb
JH
1542 )
1543 ||
1544 (aligned &&
1545 (PL_origargv[i] > s &&
1546 PL_origargv[i] <=
1547 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1548 )
1549 {
1550 s = PL_origargv[i];
1551 while (*s) s++;
1552 }
1553 else
1554 break;
54bfe034 1555 }
54bfe034 1556 }
a4a109c2
JD
1557
1558#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1559 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1560 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1561 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1562 ||
1563 (aligned &&
1564 (PL_origenviron[0] > s &&
1565 PL_origenviron[0] <=
1566 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1567 )
1568 {
9d419b5f 1569#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1570 s = PL_origenviron[0];
1571 while (*s) s++;
1572#endif
bd61b366 1573 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1574 /* Force copy of environment. */
1575 for (i = 1; PL_origenviron[i]; i++) {
1576 if (PL_origenviron[i] == s + 1
1577 ||
1578 (aligned &&
1579 (PL_origenviron[i] > s &&
1580 PL_origenviron[i] <=
1581 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1582 )
1583 {
1584 s = PL_origenviron[i];
1585 while (*s) s++;
1586 }
1587 else
1588 break;
54bfe034 1589 }
43c32782 1590 }
54bfe034 1591 }
a4a109c2
JD
1592#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1593
2d2af554 1594 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1595 }
1596
3280af22 1597 if (PL_do_undump) {
a0d0e21e
LW
1598
1599 /* Come here if running an undumped a.out. */
1600
3280af22
NIS
1601 PL_origfilename = savepv(argv[0]);
1602 PL_do_undump = FALSE;
a0d0e21e 1603 cxstack_ix = -1; /* start label stack again */
748a9306 1604 init_ids();
b7975bdd
NC
1605 assert (!PL_tainted);
1606 TAINT;
1607 S_set_caret_X(aTHX);
1608 TAINT_NOT;
a0d0e21e
LW
1609 init_postdump_symbols(argc,argv,env);
1610 return 0;
1611 }
1612
3280af22 1613 if (PL_main_root) {
3280af22 1614 op_free(PL_main_root);
5f66b61c 1615 PL_main_root = NULL;
ff0cee69 1616 }
5f66b61c 1617 PL_main_start = NULL;
3280af22 1618 SvREFCNT_dec(PL_main_cv);
601f1833 1619 PL_main_cv = NULL;
79072805 1620
3280af22
NIS
1621 time(&PL_basetime);
1622 oldscope = PL_scopestack_ix;
599cee73 1623 PL_dowarn = G_WARN_OFF;
f86702cc 1624
14dd3ad8 1625 JMPENV_PUSH(ret);
6224f72b 1626 switch (ret) {
312caa8e 1627 case 0:
14dd3ad8 1628 parse_body(env,xsinit);
9ebf26ad 1629 if (PL_unitcheckav) {
3c10abe3 1630 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1631 }
1632 if (PL_checkav) {
ca7b837b 1633 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1634 call_list(oldscope, PL_checkav);
9ebf26ad 1635 }
14dd3ad8
GS
1636 ret = 0;
1637 break;
6224f72b
GS
1638 case 1:
1639 STATUS_ALL_FAILURE;
1640 /* FALL THROUGH */
1641 case 2:
1642 /* my_exit() was called */
3280af22 1643 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1644 LEAVE;
1645 FREETMPS;
3280af22 1646 PL_curstash = PL_defstash;
9ebf26ad 1647 if (PL_unitcheckav) {
3c10abe3 1648 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1649 }
1650 if (PL_checkav) {
ca7b837b 1651 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1652 call_list(oldscope, PL_checkav);
9ebf26ad 1653 }
37038d91 1654 ret = STATUS_EXIT;
14dd3ad8 1655 break;
6224f72b 1656 case 3:
bf49b057 1657 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1658 ret = 1;
1659 break;
6224f72b 1660 }
14dd3ad8
GS
1661 JMPENV_POP;
1662 return ret;
1663}
1664
4a5df386
NC
1665/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1666 miniperl, and we need to see those flags reflected in the values here. */
1667
1668/* What this returns is subject to change. Use the public interface in Config.
1669 */
1670static void
1671S_Internals_V(pTHX_ CV *cv)
1672{
1673 dXSARGS;
1674#ifdef LOCAL_PATCH_COUNT
1675 const int local_patch_count = LOCAL_PATCH_COUNT;
1676#else
1677 const int local_patch_count = 0;
1678#endif
2dc296d2 1679 const int entries = 3 + local_patch_count;
4a5df386
NC
1680 int i;
1681 static char non_bincompat_options[] =
1682# ifdef DEBUGGING
1683 " DEBUGGING"
1684# endif
17552284
NC
1685# ifdef HOMEGROWN_POSIX_SIGNALS
1686 " HOMEGROWN_POSIX_SIGNALS"
1687# endif
4a5df386 1688# ifdef NO_MATHOMS
0d311fbe 1689 " NO_MATHOMS"
4a5df386
NC
1690# endif
1691# ifdef PERL_DISABLE_PMC
1692 " PERL_DISABLE_PMC"
1693# endif
1694# ifdef PERL_DONT_CREATE_GVSV
1695 " PERL_DONT_CREATE_GVSV"
1696# endif
9a044a43
NC
1697# ifdef PERL_EXTERNAL_GLOB
1698 " PERL_EXTERNAL_GLOB"
1699# endif
4a5df386
NC
1700# ifdef PERL_IS_MINIPERL
1701 " PERL_IS_MINIPERL"
1702# endif
1703# ifdef PERL_MALLOC_WRAP
1704 " PERL_MALLOC_WRAP"
1705# endif
1706# ifdef PERL_MEM_LOG
1707 " PERL_MEM_LOG"
1708# endif
1709# ifdef PERL_MEM_LOG_NOIMPL
1710 " PERL_MEM_LOG_NOIMPL"
1711# endif
c3cf41ec
NC
1712# ifdef PERL_PRESERVE_IVUV
1713 " PERL_PRESERVE_IVUV"
1714# endif
4a5df386
NC
1715# ifdef PERL_USE_DEVEL
1716 " PERL_USE_DEVEL"
1717# endif
1718# ifdef PERL_USE_SAFE_PUTENV
1719 " PERL_USE_SAFE_PUTENV"
1720# endif
a3749cf3
NC
1721# ifdef UNLINK_ALL_VERSIONS
1722 " UNLINK_ALL_VERSIONS"
1723# endif
de618ee4
NC
1724# ifdef USE_ATTRIBUTES_FOR_PERLIO
1725 " USE_ATTRIBUTES_FOR_PERLIO"
1726# endif
4a5df386
NC
1727# ifdef USE_FAST_STDIO
1728 " USE_FAST_STDIO"
1729# endif
98548bdf
NC
1730# ifdef USE_LOCALE
1731 " USE_LOCALE"
1732# endif
98548bdf
NC
1733# ifdef USE_LOCALE_CTYPE
1734 " USE_LOCALE_CTYPE"
1735# endif
5a8d8935
NC
1736# ifdef USE_PERL_ATOF
1737 " USE_PERL_ATOF"
1738# endif
0d311fbe
NC
1739# ifdef USE_SITECUSTOMIZE
1740 " USE_SITECUSTOMIZE"
1741# endif
4a5df386
NC
1742 ;
1743 PERL_UNUSED_ARG(cv);
1744 PERL_UNUSED_ARG(items);
1745
1746 EXTEND(SP, entries);
1747
1748 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1749 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1750 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1751
1752#ifdef __DATE__
1753# ifdef __TIME__
1754 PUSHs(Perl_newSVpvn_flags(aTHX_
1755 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1756 SVs_TEMP));
1757# else
1758 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1759 SVs_TEMP));
1760# endif
1761#else
1762 PUSHs(&PL_sv_undef);
1763#endif
1764
4a5df386
NC
1765 for (i = 1; i <= local_patch_count; i++) {
1766 /* This will be an undef, if PL_localpatches[i] is NULL. */
1767 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1768 }
1769
1770 XSRETURN(entries);
1771}
1772
be71fc8f
NC
1773#define INCPUSH_UNSHIFT 0x01
1774#define INCPUSH_ADD_OLD_VERS 0x02
1775#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1776#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1777#define INCPUSH_NOT_BASEDIR 0x10
1778#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1779#define INCPUSH_ADD_SUB_DIRS \
1780 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1781
312caa8e 1782STATIC void *
14dd3ad8 1783S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1784{
27da23d5 1785 dVAR;
2f9285f8 1786 PerlIO *rsfp;
312caa8e 1787 int argc = PL_origargc;
8f42b153 1788 char **argv = PL_origargv;
e1ec3a88 1789 const char *scriptname = NULL;
312caa8e 1790 VOL bool dosearch = FALSE;
c7030b81 1791 register char c;
737c24fc 1792 bool doextract = FALSE;
bd61b366 1793 const char *cddir = NULL;
ab019eaa 1794#ifdef USE_SITECUSTOMIZE
20ef40cf 1795 bool minus_f = FALSE;
ab019eaa 1796#endif
009d90df 1797 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1798 bool add_read_e_script = FALSE;
009d90df 1799
ca7b837b 1800 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1801
009d90df 1802 SvGROW(linestr_sv, 80);
76f68e9b 1803 sv_setpvs(linestr_sv,"");
312caa8e 1804
6224f72b 1805 init_main_stash();
54310121 1806
c7030b81
NC
1807 {
1808 const char *s;
6224f72b
GS
1809 for (argc--,argv++; argc > 0; argc--,argv++) {
1810 if (argv[0][0] != '-' || !argv[0][1])
1811 break;
6224f72b
GS
1812 s = argv[0]+1;
1813 reswitch:
47f56822 1814 switch ((c = *s)) {
729a02f2 1815 case 'C':
1d5472a9
GS
1816#ifndef PERL_STRICT_CR
1817 case '\r':
1818#endif
6224f72b
GS
1819 case ' ':
1820 case '0':
1821 case 'F':
1822 case 'a':
1823 case 'c':
1824 case 'd':
1825 case 'D':
1826 case 'h':
1827 case 'i':
1828 case 'l':
1829 case 'M':
1830 case 'm':
1831 case 'n':
1832 case 'p':
1833 case 's':
1834 case 'u':
1835 case 'U':
1836 case 'v':
599cee73
PM
1837 case 'W':
1838 case 'X':
6224f72b 1839 case 'w':
97bd5664 1840 if ((s = moreswitches(s)))
6224f72b
GS
1841 goto reswitch;
1842 break;
33b78306 1843
1dbad523 1844 case 't':
22f7c9c9 1845 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1846 if( !PL_tainting ) {
1847 PL_taint_warn = TRUE;
1848 PL_tainting = TRUE;
1849 }
1850 s++;
1851 goto reswitch;
6224f72b 1852 case 'T':
22f7c9c9 1853 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1854 PL_tainting = TRUE;
317ea90d 1855 PL_taint_warn = FALSE;
6224f72b
GS
1856 s++;
1857 goto reswitch;
f86702cc 1858
bc9b29db
RH
1859 case 'E':
1860 PL_minus_E = TRUE;
1861 /* FALL THROUGH */
6224f72b 1862 case 'e':
f20b2998 1863 forbid_setid('e', FALSE);
3280af22 1864 if (!PL_e_script) {
396482e1 1865 PL_e_script = newSVpvs("");
5486870f 1866 add_read_e_script = TRUE;
6224f72b
GS
1867 }
1868 if (*++s)
3280af22 1869 sv_catpv(PL_e_script, s);
6224f72b 1870 else if (argv[1]) {
3280af22 1871 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1872 argc--,argv++;
1873 }
1874 else
47f56822 1875 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1876 sv_catpvs(PL_e_script, "\n");
6224f72b 1877 break;
afe37c7d 1878
20ef40cf 1879 case 'f':
f5542d3a 1880#ifdef USE_SITECUSTOMIZE
20ef40cf 1881 minus_f = TRUE;
f5542d3a 1882#endif
20ef40cf
GA
1883 s++;
1884 goto reswitch;
1885
6224f72b 1886 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1887 forbid_setid('I', FALSE);
bd61b366 1888 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1889 argc--,argv++;
1890 }
6224f72b 1891 if (s && *s) {
0df16ed7 1892 STRLEN len = strlen(s);
55b4bc1c 1893 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1894 }
1895 else
a67e862a 1896 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1897 break;
6224f72b 1898 case 'S':
f20b2998 1899 forbid_setid('S', FALSE);
6224f72b
GS
1900 dosearch = TRUE;
1901 s++;
1902 goto reswitch;
1903 case 'V':
7edfd0ef
NC
1904 {
1905 SV *opts_prog;
1906
7edfd0ef 1907 if (*++s != ':') {
37ca4a5b 1908 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1909 }
1910 else {
1911 ++s;
1912 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1913 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1914 0, s, 0);
1915 s += strlen(s);
1916 }
37ca4a5b 1917 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1918 /* don't look for script or read stdin */
1919 scriptname = BIT_BUCKET;
1920 goto reswitch;
6224f72b 1921 }
6224f72b 1922 case 'x':
737c24fc 1923 doextract = TRUE;
6224f72b 1924 s++;
304334da 1925 if (*s)
f4c556ac 1926 cddir = s;
6224f72b
GS
1927 break;
1928 case 0:
1929 break;
1930 case '-':
1931 if (!*++s || isSPACE(*s)) {
1932 argc--,argv++;
1933 goto switch_end;
1934 }
1935 /* catch use of gnu style long options */
1936 if (strEQ(s, "version")) {
dd374669 1937 s = (char *)"v";
6224f72b
GS
1938 goto reswitch;
1939 }
1940 if (strEQ(s, "help")) {
dd374669 1941 s = (char *)"h";
6224f72b
GS
1942 goto reswitch;
1943 }
1944 s--;
1945 /* FALL THROUGH */
1946 default:
cea2e8a9 1947 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1948 }
1949 }
c7030b81
NC
1950 }
1951
6224f72b 1952 switch_end:
54310121 1953
c7030b81
NC
1954 {
1955 char *s;
1956
f675dbe5
CB
1957 if (
1958#ifndef SECURE_INTERNAL_GETENV
1959 !PL_tainting &&
1960#endif
cf756827 1961 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1962 {
74288ac8
GS
1963 while (isSPACE(*s))
1964 s++;
317ea90d 1965 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1966 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1967 PL_tainting = TRUE;
317ea90d
MS
1968 PL_taint_warn = FALSE;
1969 }
74288ac8 1970 else {
bd61b366 1971 char *popt_copy = NULL;
74288ac8 1972 while (s && *s) {
54913509 1973 const char *d;
74288ac8
GS
1974 while (isSPACE(*s))
1975 s++;
1976 if (*s == '-') {
1977 s++;
1978 if (isSPACE(*s))
1979 continue;
1980 }
4ea8f8fb 1981 d = s;
74288ac8
GS
1982 if (!*s)
1983 break;
2b622f1a 1984 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1985 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1986 while (++s && *s) {
1987 if (isSPACE(*s)) {
cf756827 1988 if (!popt_copy) {
bfa6c418
NC
1989 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1990 s = popt_copy + (s - d);
1991 d = popt_copy;
cf756827 1992 }
4ea8f8fb
MS
1993 *s++ = '\0';
1994 break;
1995 }
1996 }
1c4db469 1997 if (*d == 't') {
317ea90d
MS
1998 if( !PL_tainting ) {
1999 PL_taint_warn = TRUE;
2000 PL_tainting = TRUE;
2001 }
1c4db469 2002 } else {
97bd5664 2003 moreswitches(d);
1c4db469 2004 }
6224f72b 2005 }
6224f72b
GS
2006 }
2007 }
c7030b81 2008 }
a0d0e21e 2009
43c0c913 2010#if defined(USE_SITECUSTOMIZE)
20ef40cf 2011 if (!minus_f) {
43c0c913 2012 /* The games with local $! are to avoid setting errno if there is no
404ad9dc 2013 sitecustomize script. */
43c0c913
NC
2014# ifdef PERL_IS_MINIPERL
2015 AV *const inc = GvAV(PL_incgv);
2016 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2017
2018 if (inc0) {
2019 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2020 Perl_newSVpvf(aTHX_
2021 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
2022 }
2023# else
2024 /* SITELIB_EXP is a function call on Win32. */
404ad9dc 2025 const char *const sitelib = SITELIB_EXP;
29a861e7 2026 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
2027 Perl_newSVpvf(aTHX_
2028 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
43c0c913 2029# endif
20ef40cf
GA
2030 }
2031#endif
2032
6224f72b
GS
2033 if (!scriptname)
2034 scriptname = argv[0];
3280af22 2035 if (PL_e_script) {
6224f72b
GS
2036 argc++,argv--;
2037 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2038 }
bd61b366 2039 else if (scriptname == NULL) {
6224f72b
GS
2040#ifdef MSDOS
2041 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2042 moreswitches("h");
6224f72b
GS
2043#endif
2044 scriptname = "-";
2045 }
2046
b7975bdd
NC
2047 /* Set $^X early so that it can be used for relocatable paths in @INC */
2048 assert (!PL_tainted);
2049 TAINT;
2050 S_set_caret_X(aTHX);
2051 TAINT_NOT;
2cace6ac 2052 init_perllib();
6224f72b 2053
a52eba0e 2054 {
f20b2998 2055 bool suidscript = FALSE;
829372d3 2056
cc69b689 2057 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2058
2f9285f8 2059 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2060 linestr_sv, rsfp);
6224f72b 2061
64ca3a65 2062#ifndef PERL_MICRO
a52eba0e
NC
2063# if defined(SIGCHLD) || defined(SIGCLD)
2064 {
2065# ifndef SIGCHLD
2066# define SIGCHLD SIGCLD
2067# endif
2068 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2069 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2070 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2071 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2072 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2073 }
0b5b802d 2074 }
a52eba0e 2075# endif
64ca3a65 2076#endif
0b5b802d 2077
737c24fc 2078 if (doextract) {
faef540c 2079
f20b2998 2080 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2081 setuid scripts. */
2082 forbid_setid('x', suidscript);
f20b2998 2083 /* Hence you can't get here if suidscript is true */
faef540c 2084
2f9285f8 2085 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2086 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2087 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2088 }
f4c556ac 2089 }
6224f72b 2090
ea726b52 2091 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2092 CvUNIQUE_on(PL_compcv);
2093
dd2155a4 2094 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2095
dd69841b
BB
2096 PL_isarev = newHV();
2097
0c4f7ff0 2098 boot_core_PerlIO();
6224f72b 2099 boot_core_UNIVERSAL();
e1a479c5 2100 boot_core_mro();
4a5df386 2101 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2102
2103 if (xsinit)
acfe0abc 2104 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2105#ifndef PERL_MICRO
d0d72822 2106#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2107 init_os_extras();
6224f72b 2108#endif
64ca3a65 2109#endif
6224f72b 2110
29209bc5 2111#ifdef USE_SOCKS
1b9c9cf5
DH
2112# ifdef HAS_SOCKS5_INIT
2113 socks5_init(argv[0]);
2114# else
29209bc5 2115 SOCKSinit(argv[0]);
1b9c9cf5 2116# endif
ac27b0f5 2117#endif
29209bc5 2118
6224f72b
GS
2119 init_predump_symbols();
2120 /* init_postdump_symbols not currently designed to be called */
2121 /* more than once (ENV isn't cleared first, for example) */
2122 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2123 if (!PL_do_undump)
6224f72b
GS
2124 init_postdump_symbols(argc,argv,env);
2125
27da23d5
JH
2126 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2127 * or explicitly in some platforms.
085a54d9 2128 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2129 * look like the user wants to use UTF-8. */
a0fd4948 2130#if defined(__SYMBIAN32__)
27da23d5
JH
2131 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2132#endif
e27b5b51 2133# ifndef PERL_IS_MINIPERL
06e66572
JH
2134 if (PL_unicode) {
2135 /* Requires init_predump_symbols(). */
a05d7ebb 2136 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2137 IO* io;
2138 PerlIO* fp;
2139 SV* sv;
2140
a05d7ebb 2141 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2142 * and the default open disciplines. */
a05d7ebb
JH
2143 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2144 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2145 (fp = IoIFP(io)))
2146 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2147 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2148 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2149 (fp = IoOFP(io)))
2150 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2151 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2152 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2153 (fp = IoOFP(io)))
2154 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2155 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2156 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2157 SVt_PV)))) {
a05d7ebb
JH
2158 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2159 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2160 if (in) {
2161 if (out)
76f68e9b 2162 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2163 else
76f68e9b 2164 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2165 }
2166 else if (out)
76f68e9b 2167 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2168 SvSETMAGIC(sv);
2169 }
b310b053
JH
2170 }
2171 }
e27b5b51 2172#endif
b310b053 2173
c7030b81
NC
2174 {
2175 const char *s;
4ffa73a3
JH
2176 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2177 if (strEQ(s, "unsafe"))
2178 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2179 else if (strEQ(s, "safe"))
2180 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2181 else
2182 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2183 }
c7030b81 2184 }
4ffa73a3 2185
81d86705 2186#ifdef PERL_MAD
c7030b81
NC
2187 {
2188 const char *s;
81d86705
NC
2189 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2190 PL_madskills = 1;
2191 PL_minus_c = 1;
2192 if (!s || !s[0])
2193 PL_xmlfp = PerlIO_stdout();
2194 else {
2195 PL_xmlfp = PerlIO_open(s, "w");
2196 if (!PL_xmlfp)
2197 Perl_croak(aTHX_ "Can't open %s", s);
2198 }
1a9a51d4 2199 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2200 }
c7030b81
NC
2201 }
2202
2203 {
2204 const char *s;
81d86705
NC
2205 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2206 PL_madskills = atoi(s);
1a9a51d4 2207 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2208 }
c7030b81 2209 }
81d86705
NC
2210#endif
2211
8eaa0acf 2212 lex_start(linestr_sv, rsfp, 0);
219f7226 2213 PL_subname = newSVpvs("main");
6224f72b 2214
5486870f
DM
2215 if (add_read_e_script)
2216 filter_add(read_e_script, NULL);
2217
6224f72b
GS
2218 /* now parse the script */
2219
93189314 2220 SETERRNO(0,SS_NORMAL);
28ac2b49 2221 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2222 if (PL_minus_c)
cea2e8a9 2223 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2224 else {
cea2e8a9 2225 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2226 PL_origfilename);
6224f72b
GS
2227 }
2228 }
57843af0 2229 CopLINE_set(PL_curcop, 0);
3280af22 2230 PL_curstash = PL_defstash;
3280af22
NIS
2231 if (PL_e_script) {
2232 SvREFCNT_dec(PL_e_script);
a0714e2c 2233 PL_e_script = NULL;
6224f72b
GS
2234 }
2235
3280af22 2236 if (PL_do_undump)
6224f72b
GS
2237 my_unexec();
2238
57843af0
GS
2239 if (isWARN_ONCE) {
2240 SAVECOPFILE(PL_curcop);
2241 SAVECOPLINE(PL_curcop);
3280af22 2242 gv_check(PL_defstash);
57843af0 2243 }
6224f72b
GS
2244
2245 LEAVE;
2246 FREETMPS;
2247
2248#ifdef MYMALLOC
f6a607bc
RGS
2249 {
2250 const char *s;
6224f72b
GS
2251 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2252 dump_mstats("after compilation:");
f6a607bc 2253 }
6224f72b
GS
2254#endif
2255
2256 ENTER;
febb3a6d 2257 PL_restartjmpenv = NULL;
3280af22 2258 PL_restartop = 0;
312caa8e 2259 return NULL;
6224f72b
GS
2260}
2261
954c1994
GS
2262/*
2263=for apidoc perl_run
2264
2265Tells a Perl interpreter to run. See L<perlembed>.
2266
2267=cut
2268*/
2269
6224f72b 2270int
0cb96387 2271perl_run(pTHXx)
6224f72b 2272{
97aff369 2273 dVAR;
6224f72b 2274 I32 oldscope;
14dd3ad8 2275 int ret = 0;
db36c5a1 2276 dJMPENV;
6224f72b 2277
7918f24d
NC
2278 PERL_ARGS_ASSERT_PERL_RUN;
2279#ifndef MULTIPLICITY
ed6c66dd 2280 PERL_UNUSED_ARG(my_perl);
7918f24d 2281#endif
9d4ba2ae 2282
3280af22 2283 oldscope = PL_scopestack_ix;
96e176bf
CL
2284#ifdef VMS
2285 VMSISH_HUSHED = 0;
2286#endif
6224f72b 2287
14dd3ad8 2288 JMPENV_PUSH(ret);
6224f72b
GS
2289 switch (ret) {
2290 case 1:
2291 cxstack_ix = -1; /* start context stack again */
312caa8e 2292 goto redo_body;
14dd3ad8 2293 case 0: /* normal completion */
14dd3ad8
GS
2294 redo_body:
2295 run_body(oldscope);
14dd3ad8
GS
2296 /* FALL THROUGH */
2297 case 2: /* my_exit() */
3280af22 2298 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2299 LEAVE;
2300 FREETMPS;
3280af22 2301 PL_curstash = PL_defstash;
3a1ee7e8 2302 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2303 PL_endav && !PL_minus_c) {
ca7b837b 2304 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2305 call_list(oldscope, PL_endav);
9ebf26ad 2306 }
6224f72b
GS
2307#ifdef MYMALLOC
2308 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2309 dump_mstats("after execution: ");
2310#endif
37038d91 2311 ret = STATUS_EXIT;
14dd3ad8 2312 break;
6224f72b 2313 case 3:
312caa8e
CS
2314 if (PL_restartop) {
2315 POPSTACK_TO(PL_mainstack);
2316 goto redo_body;
6224f72b 2317 }
bf49b057 2318 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2319 FREETMPS;
14dd3ad8
GS
2320 ret = 1;
2321 break;
6224f72b
GS
2322 }
2323
14dd3ad8
GS
2324 JMPENV_POP;
2325 return ret;
312caa8e
CS
2326}
2327
dd374669 2328STATIC void
14dd3ad8
GS
2329S_run_body(pTHX_ I32 oldscope)
2330{
97aff369 2331 dVAR;
6224f72b 2332 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2333 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2334
3280af22 2335 if (!PL_restartop) {
81d86705
NC
2336#ifdef PERL_MAD
2337 if (PL_xmlfp) {
2338 xmldump_all();
2339 exit(0); /* less likely to core dump than my_exit(0) */
2340 }
2341#endif
cf2782cd 2342#ifdef DEBUGGING
f0e3f042
CS
2343 if (DEBUG_x_TEST || DEBUG_B_TEST)
2344 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2345 if (!DEBUG_q_TEST)
2346 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2347#endif
6224f72b 2348
3280af22 2349 if (PL_minus_c) {
bf49b057 2350 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2351 my_exit(0);
2352 }
3280af22 2353 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2354 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2355 if (PL_initav) {
ca7b837b 2356 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2357 call_list(oldscope, PL_initav);
9ebf26ad 2358 }
f1fac472
NC
2359#ifdef PERL_DEBUG_READONLY_OPS
2360 Perl_pending_Slabs_to_ro(aTHX);
2361#endif
6224f72b
GS
2362 }
2363
2364 /* do it */
2365
ca7b837b 2366 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2367
3280af22 2368 if (PL_restartop) {
febb3a6d 2369 PL_restartjmpenv = NULL;
533c011a 2370 PL_op = PL_restartop;
3280af22 2371 PL_restartop = 0;
cea2e8a9 2372 CALLRUNOPS(aTHX);
6224f72b 2373 }
3280af22
NIS
2374 else if (PL_main_start) {
2375 CvDEPTH(PL_main_cv) = 1;
533c011a 2376 PL_op = PL_main_start;
cea2e8a9 2377 CALLRUNOPS(aTHX);
6224f72b 2378 }
f6b3007c
JH
2379 my_exit(0);
2380 /* NOTREACHED */
6224f72b
GS
2381}
2382
954c1994 2383/*
ccfc67b7
JH
2384=head1 SV Manipulation Functions
2385
954c1994
GS
2386=for apidoc p||get_sv
2387
64ace3f8
NC
2388Returns the SV of the specified Perl scalar. C<flags> are passed to
2389C<gv_fetchpv>. If C<GV_ADD> is set and the
2390Perl variable does not exist then it will be created. If C<flags> is zero
2391and the variable does not exist then NULL is returned.
954c1994
GS
2392
2393=cut
2394*/
2395
6224f72b 2396SV*
64ace3f8 2397Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2398{
2399 GV *gv;
7918f24d
NC
2400
2401 PERL_ARGS_ASSERT_GET_SV;
2402
64ace3f8 2403 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2404 if (gv)
2405 return GvSV(gv);
a0714e2c 2406 return NULL;
6224f72b
GS
2407}
2408
954c1994 2409/*
ccfc67b7
JH
2410=head1 Array Manipulation Functions
2411
954c1994
GS
2412=for apidoc p||get_av
2413
f0b90de1
SF
2414Returns the AV of the specified Perl global or package array with the given
2415name (so it won't work on lexical variables). C<flags> are passed
2416to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2417Perl variable does not exist then it will be created. If C<flags> is zero
2418and the variable does not exist then NULL is returned.
954c1994 2419
f0b90de1
SF
2420Perl equivalent: C<@{"$name"}>.
2421
954c1994
GS
2422=cut
2423*/
2424
6224f72b 2425AV*
cbfd0a87 2426Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2427{
cbfd0a87 2428 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2429
2430 PERL_ARGS_ASSERT_GET_AV;
2431
cbfd0a87 2432 if (flags)
6224f72b
GS
2433 return GvAVn(gv);
2434 if (gv)
2435 return GvAV(gv);
7d49f689 2436 return NULL;
6224f72b
GS
2437}
2438
954c1994 2439/*
ccfc67b7
JH
2440=head1 Hash Manipulation Functions
2441
954c1994
GS
2442=for apidoc p||get_hv
2443
6673a63c
NC
2444Returns the HV of the specified Perl hash. C<flags> are passed to
2445C<gv_fetchpv>. If C<GV_ADD> is set and the
2446Perl variable does not exist then it will be created. If C<flags> is zero
2447and the variable does not exist then NULL is returned.
954c1994
GS
2448
2449=cut
2450*/
2451
6224f72b 2452HV*
6673a63c 2453Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2454{
6673a63c 2455 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2456
2457 PERL_ARGS_ASSERT_GET_HV;
2458
6673a63c 2459 if (flags)
a0d0e21e
LW
2460 return GvHVn(gv);
2461 if (gv)
2462 return GvHV(gv);
5c284bb0 2463 return NULL;
a0d0e21e
LW
2464}
2465
954c1994 2466/*
ccfc67b7
JH
2467=head1 CV Manipulation Functions
2468
780a5241
NC
2469=for apidoc p||get_cvn_flags
2470
2471Returns the CV of the specified Perl subroutine. C<flags> are passed to
2472C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2473exist then it will be declared (which has the same effect as saying
2474C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2475then NULL is returned.
2476
954c1994
GS
2477=for apidoc p||get_cv
2478
780a5241 2479Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2480
2481=cut
2482*/
2483
a0d0e21e 2484CV*
780a5241 2485Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2486{
780a5241 2487 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2488 /* XXX this is probably not what they think they're getting.
2489 * It has the same effect as "sub name;", i.e. just a forward
2490 * declaration! */
7918f24d
NC
2491
2492 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2493
780a5241 2494 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2495 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2496 return newSUB(start_subparse(FALSE, 0),
780a5241 2497 newSVOP(OP_CONST, 0, sv),
5f66b61c 2498 NULL, NULL);
780a5241 2499 }
a0d0e21e 2500 if (gv)
8ebc5c01 2501 return GvCVu(gv);
601f1833 2502 return NULL;
a0d0e21e
LW
2503}
2504
2c67934f
NC
2505/* Nothing in core calls this now, but we can't replace it with a macro and
2506 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2507CV*
2508Perl_get_cv(pTHX_ const char *name, I32 flags)
2509{
7918f24d
NC
2510 PERL_ARGS_ASSERT_GET_CV;
2511
780a5241
NC
2512 return get_cvn_flags(name, strlen(name), flags);
2513}
2514
79072805
LW
2515/* Be sure to refetch the stack pointer after calling these routines. */
2516
954c1994 2517/*
ccfc67b7
JH
2518
2519=head1 Callback Functions
2520
954c1994
GS
2521=for apidoc p||call_argv
2522
f0b90de1
SF
2523Performs a callback to the specified named and package-scoped Perl subroutine
2524with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2525
2526Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2527
2528=cut
2529*/
2530
a0d0e21e 2531I32
8f42b153 2532Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2533
8ac85365
NIS
2534 /* See G_* flags in cop.h */
2535 /* null terminated arg list */
8990e307 2536{
97aff369 2537 dVAR;
a0d0e21e 2538 dSP;
8990e307 2539
7918f24d
NC
2540 PERL_ARGS_ASSERT_CALL_ARGV;
2541
924508f0 2542 PUSHMARK(SP);
a0d0e21e 2543 if (argv) {
8990e307 2544 while (*argv) {
6e449a3a 2545 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2546 argv++;
2547 }
a0d0e21e 2548 PUTBACK;
8990e307 2549 }
864dbfa3 2550 return call_pv(sub_name, flags);
8990e307
LW
2551}
2552
954c1994
GS
2553/*
2554=for apidoc p||call_pv
2555
2556Performs a callback to the specified Perl sub. See L<perlcall>.
2557
2558=cut
2559*/
2560
a0d0e21e 2561I32
864dbfa3 2562Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2563 /* name of the subroutine */
2564 /* See G_* flags in cop.h */
a0d0e21e 2565{
7918f24d
NC
2566 PERL_ARGS_ASSERT_CALL_PV;
2567
0da0e728 2568 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2569}
2570
954c1994
GS
2571/*
2572=for apidoc p||call_method
2573
2574Performs a callback to the specified Perl method. The blessed object must
2575be on the stack. See L<perlcall>.
2576
2577=cut
2578*/
2579
a0d0e21e 2580I32
864dbfa3 2581Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2582 /* name of the subroutine */
2583 /* See G_* flags in cop.h */
a0d0e21e 2584{
46ca9bac 2585 STRLEN len;
7918f24d
NC
2586 PERL_ARGS_ASSERT_CALL_METHOD;
2587
46ca9bac 2588 len = strlen(methname);
2589
2590 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2591 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2592}
2593
2594/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2595/*
2596=for apidoc p||call_sv
2597
2598Performs a callback to the Perl sub whose name is in the SV. See
2599L<perlcall>.
2600
2601=cut
2602*/
2603
a0d0e21e 2604I32
001d637e 2605Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2606 /* See G_* flags in cop.h */
a0d0e21e 2607{
27da23d5 2608 dVAR; dSP;
a0d0e21e 2609 LOGOP myop; /* fake syntax tree node */
968b3946 2610 UNOP method_op;
aa689395 2611 I32 oldmark;
8ea43dc8 2612 VOL I32 retval = 0;
a0d0e21e 2613 I32 oldscope;
54310121 2614 bool oldcatch = CATCH_GET;
6224f72b 2615 int ret;
c4420975 2616 OP* const oldop = PL_op;
db36c5a1 2617 dJMPENV;
1e422769 2618
7918f24d
NC
2619 PERL_ARGS_ASSERT_CALL_SV;
2620
a0d0e21e
LW
2621 if (flags & G_DISCARD) {
2622 ENTER;
2623 SAVETMPS;
2624 }
2f8edad0
NC
2625 if (!(flags & G_WANT)) {
2626 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2627 */
2628 flags |= G_SCALAR;
2629 }
a0d0e21e 2630
aa689395 2631 Zero(&myop, 1, LOGOP);
5f66b61c 2632 myop.op_next = NULL;
f51d4af5 2633 if (!(flags & G_NOARGS))
aa689395 2634 myop.op_flags |= OPf_STACKED;
4f911530 2635 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2636 SAVEOP();
533c011a 2637 PL_op = (OP*)&myop;
aa689395 2638
3280af22
NIS
2639 EXTEND(PL_stack_sp, 1);
2640 *++PL_stack_sp = sv;
aa689395 2641 oldmark = TOPMARK;
3280af22 2642 oldscope = PL_scopestack_ix;
a0d0e21e 2643
3280af22 2644 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2645 /* Handle first BEGIN of -d. */
3280af22 2646 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2647 /* Try harder, since this may have been a sighandler, thus
2648 * curstash may be meaningless. */
ea726b52 2649 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2650 && !(flags & G_NODEBUG))
533c011a 2651 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2652
968b3946
GS
2653 if (flags & G_METHOD) {
2654 Zero(&method_op, 1, UNOP);
2655 method_op.op_next = PL_op;
2656 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2657 method_op.op_type = OP_METHOD;
968b3946 2658 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2659 myop.op_type = OP_ENTERSUB;
f39d0b86 2660 PL_op = (OP*)&method_op;
968b3946
GS
2661 }
2662
312caa8e 2663 if (!(flags & G_EVAL)) {
0cdb2077 2664 CATCH_SET(TRUE);
d6f07c05 2665 CALL_BODY_SUB((OP*)&myop);
312caa8e 2666 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2667 CATCH_SET(oldcatch);
312caa8e
CS
2668 }
2669 else {
d78bda3d 2670 myop.op_other = (OP*)&myop;
3280af22 2671 PL_markstack_ptr--;
edb2152a 2672 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2673 PL_markstack_ptr++;
a0d0e21e 2674
14dd3ad8 2675 JMPENV_PUSH(ret);
edb2152a 2676
6224f72b
GS
2677 switch (ret) {
2678 case 0:
14dd3ad8 2679 redo_body:
d6f07c05 2680 CALL_BODY_SUB((OP*)&myop);
312caa8e 2681 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2682 if (!(flags & G_KEEPERR)) {
ab69dbc2 2683 CLEAR_ERRSV();
8433848b 2684 }
a0d0e21e 2685 break;
6224f72b 2686 case 1:
f86702cc 2687 STATUS_ALL_FAILURE;
a0d0e21e 2688 /* FALL THROUGH */
6224f72b 2689 case 2:
a0d0e21e 2690 /* my_exit() was called */
3280af22 2691 PL_curstash = PL_defstash;
a0d0e21e 2692 FREETMPS;
14dd3ad8 2693 JMPENV_POP;
f86702cc 2694 my_exit_jump();
a0d0e21e 2695 /* NOTREACHED */
6224f72b 2696 case 3:
3280af22 2697 if (PL_restartop) {
febb3a6d 2698 PL_restartjmpenv = NULL;
533c011a 2699 PL_op = PL_restartop;
3280af22 2700 PL_restartop = 0;
312caa8e 2701 goto redo_body;
a0d0e21e 2702 }
3280af22 2703 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2704 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2705 retval = 0;
2706 else {
2707 retval = 1;
3280af22 2708 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2709 }
312caa8e 2710 break;
a0d0e21e 2711 }
a0d0e21e 2712
edb2152a
NC
2713 if (PL_scopestack_ix > oldscope)
2714 delete_eval_scope();
14dd3ad8 2715 JMPENV_POP;
a0d0e21e 2716 }
1e422769 2717
a0d0e21e 2718 if (flags & G_DISCARD) {
3280af22 2719 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2720 retval = 0;
2721 FREETMPS;
2722 LEAVE;
2723 }
533c011a 2724 PL_op = oldop;
a0d0e21e
LW
2725 return retval;
2726}
2727
6e72f9df 2728/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2729
954c1994
GS
2730/*
2731=for apidoc p||eval_sv
2732
be064c4a
DM
2733Tells Perl to C<eval> the string in the SV. It supports the same flags
2734as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2735
2736=cut
2737*/
2738
a0d0e21e 2739I32
864dbfa3 2740Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2741
8ac85365 2742 /* See G_* flags in cop.h */
a0d0e21e 2743{
97aff369 2744 dVAR;
924508f0 2745 dSP;
a0d0e21e 2746 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2747 VOL I32 oldmark = SP - PL_stack_base;
2748 VOL I32 retval = 0;
6224f72b 2749 int ret;
c4420975 2750 OP* const oldop = PL_op;
db36c5a1 2751 dJMPENV;
84902520 2752
7918f24d
NC
2753 PERL_ARGS_ASSERT_EVAL_SV;
2754
4633a7c4
LW
2755 if (flags & G_DISCARD) {
2756 ENTER;
2757 SAVETMPS;
2758 }
2759
462e5cf6 2760 SAVEOP();
533c011a
NIS
2761 PL_op = (OP*)&myop;
2762 Zero(PL_op, 1, UNOP);
3280af22
NIS
2763 EXTEND(PL_stack_sp, 1);
2764 *++PL_stack_sp = sv;
79072805 2765
4633a7c4
LW
2766 if (!(flags & G_NOARGS))
2767 myop.op_flags = OPf_STACKED;
5f66b61c 2768 myop.op_next = NULL;
6e72f9df 2769 myop.op_type = OP_ENTEREVAL;
4f911530 2770 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2771 if (flags & G_KEEPERR)
2772 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2773
dedbcade
DM
2774 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2775 * before a PUSHEVAL, which corrupts the stack after a croak */
2776 TAINT_PROPER("eval_sv()");
2777
14dd3ad8 2778 JMPENV_PUSH(ret);
6224f72b
GS
2779 switch (ret) {
2780 case 0:
14dd3ad8 2781 redo_body:
2ba65d5f
DM
2782 if (PL_op == (OP*)(&myop)) {
2783 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2784 if (!PL_op)
2785 goto fail; /* failed in compilation */
2786 }
4aca2f62 2787 CALLRUNOPS(aTHX);
312caa8e 2788 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2789 if (!(flags & G_KEEPERR)) {
ab69dbc2 2790 CLEAR_ERRSV();
8433848b 2791 }
4633a7c4 2792 break;
6224f72b 2793 case 1:
f86702cc 2794 STATUS_ALL_FAILURE;
4633a7c4 2795 /* FALL THROUGH */
6224f72b 2796 case 2:
4633a7c4 2797 /* my_exit() was called */
3280af22 2798 PL_curstash = PL_defstash;
4633a7c4 2799 FREETMPS;
14dd3ad8 2800 JMPENV_POP;
f86702cc 2801 my_exit_jump();
4633a7c4 2802 /* NOTREACHED */
6224f72b 2803 case 3:
3280af22 2804 if (PL_restartop) {
febb3a6d 2805 PL_restartjmpenv = NULL;
533c011a 2806 PL_op = PL_restartop;
3280af22 2807 PL_restartop = 0;
312caa8e 2808 goto redo_body;
4633a7c4 2809 }
4aca2f62 2810 fail:
3280af22 2811 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2812 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2813 retval = 0;
2814 else {
2815 retval = 1;
3280af22 2816 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2817 }
312caa8e 2818 break;
4633a7c4
LW
2819 }
2820
14dd3ad8 2821 JMPENV_POP;
4633a7c4 2822 if (flags & G_DISCARD) {
3280af22 2823 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2824 retval = 0;
2825 FREETMPS;
2826 LEAVE;
2827 }
533c011a 2828 PL_op = oldop;
4633a7c4
LW
2829 return retval;
2830}
2831
954c1994
GS
2832/*
2833=for apidoc p||eval_pv
2834
2835Tells Perl to C<eval> the given string and return an SV* result.
2836
2837=cut
2838*/
2839
137443ea 2840SV*
864dbfa3 2841Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2842{
97aff369 2843 dVAR;
137443ea
PP
2844 dSP;
2845 SV* sv = newSVpv(p, 0);
2846
7918f24d
NC
2847 PERL_ARGS_ASSERT_EVAL_PV;
2848
864dbfa3 2849 eval_sv(sv, G_SCALAR);
137443ea
PP
2850 SvREFCNT_dec(sv);
2851
2852 SPAGAIN;
2853 sv = POPs;
2854 PUTBACK;
2855
2d8e6c8d 2856 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2857 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2858 }
137443ea
PP
2859
2860 return sv;
2861}
2862
4633a7c4
LW
2863/* Require a module. */
2864
954c1994 2865/*
ccfc67b7
JH
2866=head1 Embedding Functions
2867
954c1994
GS
2868=for apidoc p||require_pv
2869
7d3fb230
BS
2870Tells Perl to C<require> the file named by the string argument. It is
2871analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2872implemented that way; consider using load_module instead.
954c1994 2873
7d3fb230 2874=cut */
954c1994 2875
4633a7c4 2876void
864dbfa3 2877Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2878{
97aff369 2879 dVAR;
d3acc0f7 2880 dSP;
97aff369 2881 SV* sv;
7918f24d
NC
2882
2883 PERL_ARGS_ASSERT_REQUIRE_PV;
2884
e788e7d3 2885 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2886 PUTBACK;
be41e5d9
NC
2887 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2888 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2889 SPAGAIN;
2890 POPSTACK;
79072805
LW
2891}
2892
76e3520e 2893STATIC void
e1ec3a88 2894S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2895{
ab821d7f 2896 /* This message really ought to be max 23 lines.
75c72d73 2897 * Removed -h because the user already knows that option. Others? */
fb73857a 2898
1566c39d
NC
2899 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2900 minimum of 509 character string literals. */
27da23d5 2901 static const char * const usage_msg[] = {
1566c39d
NC
2902" -0[octal] specify record separator (\\0, if no argument)\n"
2903" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2904" -C[number/list] enables the listed Unicode features\n"
2905" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2906" -d[:debugger] run program under debugger\n"
2907" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2908" -e program one line of program (several -e's allowed, omit programfile)\n"
2909" -E program like -e, but enables all optional features\n"
2910" -f don't do $sitelib/sitecustomize.pl at startup\n"
2911" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2912" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2913" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2914" -l[octal] enable line ending processing, specifies line terminator\n"
2915" -[mM][-]module execute \"use/no module...\" before executing program\n"
2916" -n assume \"while (<>) { ... }\" loop around program\n"
2917" -p assume loop like -n but print line also, like sed\n"
2918" -s enable rudimentary parsing for switches after programfile\n"
2919" -S look for programfile using PATH environment variable\n",
2920" -t enable tainting warnings\n"
2921" -T enable tainting checks\n"
2922" -u dump core after parsing program\n"
2923" -U allow unsafe operations\n"
2924" -v print version, patchlevel and license\n"
2925" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2926" -w enable many useful warnings\n"
1566c39d
NC
2927" -W enable all warnings\n"
2928" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2929" -X disable all warnings\n"
2930" \n"
2931"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2932NULL
2933};
27da23d5 2934 const char * const *p = usage_msg;
1566c39d 2935 PerlIO *out = PerlIO_stdout();
fb73857a 2936
7918f24d
NC
2937 PERL_ARGS_ASSERT_USAGE;
2938
1566c39d
NC
2939 PerlIO_printf(out,
2940 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2941 name);
fb73857a 2942 while (*p)
1566c39d 2943 PerlIO_puts(out, *p++);
4633a7c4
LW
2944}
2945
b4ab917c
DM
2946/* convert a string of -D options (or digits) into an int.
2947 * sets *s to point to the char after the options */
2948
2949#ifdef DEBUGGING
2950int
e1ec3a88 2951Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2952{
27da23d5 2953 static const char * const usage_msgd[] = {
651b8f1a
NC
2954 " Debugging flag values: (see also -d)\n"
2955 " p Tokenizing and parsing (with v, displays parse stack)\n"
2956 " s Stack snapshots (with v, displays all stacks)\n"
2957 " l Context (loop) stack processing\n"
2958 " t Trace execution\n"
2959 " o Method and overloading resolution\n",
2960 " c String/numeric conversions\n"
2961 " P Print profiling info, source file input state\n"
2962 " m Memory and SV allocation\n"
2963 " f Format processing\n"
2964 " r Regular expression parsing and execution\n"
2965 " x Syntax tree dump\n",
2966 " u Tainting checks\n"
2967 " H Hash dump -- usurps values()\n"
2968 " X Scratchpad allocation\n"
2969 " D Cleaning up\n"
2970 " T Tokenising\n"
2971 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2972 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2973 " v Verbose: use in conjunction with other flags\n"
2974 " C Copy On Write\n"
2975 " A Consistency checks on internal structures\n"
2976 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2977 " M trace smart match resolution\n"
2978 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2979 NULL
2980 };
b4ab917c 2981 int i = 0;
7918f24d
NC
2982
2983 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2984
b4ab917c
DM
2985 if (isALPHA(**s)) {
2986 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2987 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2988
2989 for (; isALNUM(**s); (*s)++) {
c4420975 2990 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2991 if (d)
2992 i |= 1 << (d - debopts);
2993 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2994 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2995 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2996 }
2997 }
e6e64d9b 2998 else if (isDIGIT(**s)) {
b4ab917c
DM
2999 i = atoi(*s);
3000 for (; isALNUM(**s); (*s)++) ;
3001 }
ddcf8bc1 3002 else if (givehelp) {
06e869a4 3003 const char *const *p = usage_msgd;
651b8f1a 3004 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3005 }
b4ab917c
DM
3006# ifdef EBCDIC
3007 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3008 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3009 "-Dp not implemented on this platform\n");
3010# endif
3011 return i;
3012}
3013#endif
3014
79072805
LW
3015/* This routine handles any switches that can be given during run */
3016
c7030b81
NC
3017const char *
3018Perl_moreswitches(pTHX_ const char *s)
79072805 3019{
27da23d5 3020 dVAR;
84c133a0 3021 UV rschar;
0544e6df 3022 const char option = *s; /* used to remember option in -m/-M code */
79072805 3023
7918f24d
NC
3024 PERL_ARGS_ASSERT_MORESWITCHES;
3025
79072805
LW
3026 switch (*s) {
3027 case '0':
a863c7d1 3028 {
f2095865 3029 I32 flags = 0;
a3b680e6 3030 STRLEN numlen;
f2095865
JH
3031
3032 SvREFCNT_dec(PL_rs);
3033 if (s[1] == 'x' && s[2]) {
a3b680e6 3034 const char *e = s+=2;
f2095865
JH
3035 U8 *tmps;
3036
a3b680e6
AL
3037 while (*e)
3038 e++;
f2095865
JH
3039 numlen = e - s;
3040 flags = PERL_SCAN_SILENT_ILLDIGIT;
3041 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3042 if (s + numlen < e) {
3043 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3044 numlen = 0;
3045 s--;
3046 }
396482e1 3047 PL_rs = newSVpvs("");
c5661c80 3048 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3049 tmps = (U8*)SvPVX(PL_rs);
3050 uvchr_to_utf8(tmps, rschar);
3051 SvCUR_set(PL_rs, UNISKIP(rschar));
3052 SvUTF8_on(PL_rs);
3053 }
3054 else {
3055 numlen = 4;
3056 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3057 if (rschar & ~((U8)~0))
3058 PL_rs = &PL_sv_undef;
3059 else if (!rschar && numlen >= 2)
396482e1 3060 PL_rs = newSVpvs("");
f2095865
JH
3061 else {
3062 char ch = (char)rschar;
3063 PL_rs = newSVpvn(&ch, 1);
3064 }
3065 }
64ace3f8 3066 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3067 return s + numlen;
a863c7d1 3068 }
46487f74 3069 case 'C':
a05d7ebb 3070 s++;
dd374669 3071 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3072 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3073 PL_utf8cache = -1;
46487f74 3074 return s;
2304df62 3075 case 'F':
3280af22 3076 PL_minus_F = TRUE;
ebce5377
RGS
3077 PL_splitstr = ++s;
3078 while (*s && !isSPACE(*s)) ++s;
e49e380e 3079 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3080 return s;
79072805 3081 case 'a':
3280af22 3082 PL_minus_a = TRUE;
79072805
LW
3083 s++;
3084 return s;
3085 case 'c':
3280af22 3086 PL_minus_c = TRUE;
79072805
LW
3087 s++;
3088 return s;
3089 case 'd':
f20b2998 3090 forbid_setid('d', FALSE);
4633a7c4 3091 s++;
2cbb2ee1
RGS
3092
3093 /* -dt indicates to the debugger that threads will be used */
3094 if (*s == 't' && !isALNUM(s[1])) {
3095 ++s;
3096 my_setenv("PERL5DB_THREADED", "1");
3097 }
3098
70c94a19
RR
3099 /* The following permits -d:Mod to accepts arguments following an =
3100 in the fashion that -MSome::Mod does. */
3101 if (*s == ':' || *s == '=') {
b19934fb
NC
3102 const char *start;
3103 const char *end;
3104 SV *sv;
3105
3106 if (*++s == '-') {
3107 ++s;
3108 sv = newSVpvs("no Devel::");
3109 } else {
3110 sv = newSVpvs("use Devel::");
3111 }
3112
3113 start = s;
3114 end = s + strlen(s);
f85893a1 3115
b19934fb 3116 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3117 while(isALNUM(*s) || *s==':') ++s;
3118 if (*s != '=')
f85893a1 3119 sv_catpvn(sv, start, end - start);
70c94a19
RR
3120 else {
3121 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3122 /* Don't use NUL as q// delimiter here, this string goes in the
3123 * environment. */
3124 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3125 }
f85893a1 3126 s = end;
184f32ec 3127 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3128 SvREFCNT_dec(sv);
4633a7c4 3129 }
ed094faf 3130 if (!PL_perldb) {
3280af22 3131 PL_perldb = PERLDB_ALL;
a0d0e21e 3132 init_debugger();
ed094faf 3133 }
79072805
LW
3134 return s;
3135 case 'D':
0453d815 3136 {
79072805 3137#ifdef DEBUGGING
f20b2998 3138 forbid_setid('D', FALSE);
b4ab917c 3139 s++;
dd374669 3140 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3141#else /* !DEBUGGING */
0453d815 3142 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3143 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3144 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3145 for (s++; isALNUM(*s); s++) ;
79072805 3146#endif
79072805 3147 return s;
0453d815 3148 }
4633a7c4 3149 case 'h':
ac27b0f5 3150 usage(PL_origargv[0]);
7ca617d0 3151 my_exit(0);
79072805 3152 case 'i':
43c5f42d 3153 Safefree(PL_inplace);
c030f24b
GH
3154#if defined(__CYGWIN__) /* do backup extension automagically */
3155 if (*(s+1) == '\0') {
c86a4f2e 3156 PL_inplace = savepvs(".bak");
c030f24b
GH
3157 return s+1;
3158 }
3159#endif /* __CYGWIN__ */
5ef5d758 3160 {
d4c19fe8 3161 const char * const start = ++s;
5ef5d758
NC
3162 while (*s && !isSPACE(*s))
3163 ++s;
3164
3165 PL_inplace = savepvn(start, s - start);
3166 }
7b8d334a 3167 if (*s) {
5ef5d758 3168 ++s;
7b8d334a 3169 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3170 s++;
7b8d334a 3171 }
fb73857a 3172 return s;
4e49a025 3173 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3174 forbid_setid('I', FALSE);
fb73857a
PP
3175 ++s;
3176 while (*s && isSPACE(*s))
3177 ++s;
3178 if (*s) {
c7030b81 3179 const char *e, *p;
0df16ed7
GS
3180 p = s;
3181 /* ignore trailing spaces (possibly followed by other switches) */
3182 do {
3183 for (e = p; *e && !isSPACE(*e); e++) ;
3184 p = e;
3185 while (isSPACE(*p))
3186 p++;
3187 } while (*p && *p != '-');
55b4bc1c 3188 incpush(s, e-s,
e28f3139 3189 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3190 s = p;
3191 if (*s == '-')
3192 s++;
79072805
LW
3193 }
3194 else
a67e862a 3195 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3196 return s;
79072805 3197 case 'l':
3280af22 3198 PL_minus_l = TRUE;
79072805 3199 s++;
7889fe52
NIS
3200 if (PL_ors_sv) {
3201 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3202 PL_ors_sv = NULL;
7889fe52 3203 }
79072805 3204 if (isDIGIT(*s)) {
53305cf1 3205 I32 flags = 0;
a3b680e6 3206 STRLEN numlen;
396482e1 3207 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3208 numlen = 3 + (*s == '0');
3209 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3210 s += numlen;
3211 }
3212 else {
8bfdd7d9 3213 if (RsPARA(PL_rs)) {
396482e1 3214 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3215 }
3216 else {
8bfdd7d9 3217 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3218 }
79072805
LW
3219 }
3220 return s;
1a30305b 3221 case 'M':
f20b2998 3222 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3223 /* FALL THROUGH */
3224 case 'm':
f20b2998 3225 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3226 if (*++s) {
c7030b81 3227 const char *start;
b64cb68c 3228 const char *end;
11343788 3229 SV *sv;
e1ec3a88 3230 const char *use = "use ";
0544e6df 3231 bool colon = FALSE;
a5f75d66 3232 /* -M-foo == 'no foo' */
d0043bd1
NC
3233 /* Leading space on " no " is deliberate, to make both
3234 possibilities the same length. */
3235 if (*s == '-') { use = " no "; ++s; }
3236 sv = newSVpvn(use,4);
a5f75d66 3237 start = s;
1a30305b 3238 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3239 while(isALNUM(*s) || *s==':') {
3240 if( *s++ == ':' ) {
3241 if( *s == ':' )
3242 s++;
3243 else
3244 colon = TRUE;
3245 }
3246 }
3247 if (s == start)
3248 Perl_croak(aTHX_ "Module name required with -%c option",
3249 option);
3250 if (colon)
3251 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3252 "contains single ':'",
63da6837 3253 (int)(s - start), start, option);
b64cb68c 3254 end = s + strlen(s);
c07a80fd 3255 if (*s != '=') {
b64cb68c 3256 sv_catpvn(sv, start, end - start);
0544e6df 3257 if (option == 'm') {
c07a80fd 3258 if (*s != '\0')
cea2e8a9 3259 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3260 sv_catpvs( sv, " ()");
c07a80fd
PP
3261 }
3262 } else {
11343788 3263 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3264 /* Use NUL as q''-delimiter. */
3265 sv_catpvs(sv, " split(/,/,q\0");
3266 ++s;
3267 sv_catpvn(sv, s, end - s);
396482e1 3268 sv_catpvs(sv, "\0)");
c07a80fd 3269 }
b64cb68c 3270 s = end;
29a861e7 3271 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3272 }
3273 else
0544e6df 3274 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3275 return s;
79072805 3276 case 'n':
3280af22 3277 PL_minus_n = TRUE;
79072805
LW
3278 s++;
3279 return s;
3280 case 'p':
3280af22 3281 PL_minus_p = TRUE;
79072805
LW
3282 s++;
3283 return s;
3284 case 's':
f20b2998 3285 forbid_setid('s', FALSE);
3280af22 3286 PL_doswitches = TRUE;
79072805
LW
3287 s++;
3288 return s;
6537fe72
MS
3289 case 't':
3290 if (!PL_tainting)
22f7c9c9 3291 TOO_LATE_FOR('t');
6537fe72
MS
3292 s++;
3293 return s;
463ee0b2 3294 case 'T':
3280af22 3295 if (!PL_tainting)
22f7c9c9 3296 TOO_LATE_FOR('T');
463ee0b2
LW
3297 s++;
3298 return s;
79072805 3299 case 'u':
3280af22 3300 PL_do_undump = TRUE;
79072805
LW
3301 s++;
3302 return s;
3303 case 'U':
3280af22 3304 PL_unsafe = TRUE;
79072805
LW
3305 s++;
3306 return s;
3307 case 'v':
d7aa5382 3308 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3309 upg_version(PL_patchlevel, TRUE);
8e9464f1 3310#if !defined(DGUX)
46807d8e
YO
3311 {
3312 SV* level= vstringify(PL_patchlevel);
3313#ifdef PERL_PATCHNUM
23d483e2
NC
3314# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3315 SV *num = newSVpvs(PERL_PATCHNUM "*");
3316# else
3317 SV *num = newSVpvs(PERL_PATCHNUM);
3318# endif
46807d8e
YO
3319
3320 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3321 SvREFCNT_dec(level);
3322 level= num;
3323 } else {
d0a9311f 3324 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3325 SvREFCNT_dec(num);
3326 }
3327 #endif
3328 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3329 "\nThis is perl " STRINGIFY(PERL_REVISION)
3330 ", version " STRINGIFY(PERL_VERSION)
3331 ", subversion " STRINGIFY(PERL_SUBVERSION)
3332 " (%"SVf") built for " ARCHNAME, level
3333 );
46807d8e
YO
3334 SvREFCNT_dec(level);
3335 }
8e9464f1
JH
3336#else /* DGUX */
3337/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3338 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3339 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3340 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3341 PerlIO_printf(PerlIO_stdout(),
3342 Perl_form(aTHX_ " built under %s at %s %s\n",
3343 OSNAME, __DATE__, __TIME__));
3344 PerlIO_printf(PerlIO_stdout(),
3345 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3346 OSVERS));
8e9464f1 3347#endif /* !DGUX */
fb73857a
PP
3348#if defined(LOCAL_PATCH_COUNT)
3349 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3350 PerlIO_printf(PerlIO_stdout(),
3351 "\n(with %d registered patch%s, "
3352 "see perl -V for more detail)",
bb7a0f54 3353 LOCAL_PATCH_COUNT,
b0e47665 3354 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3355#endif
1a30305b 3356
b0e47665 3357 PerlIO_printf(PerlIO_stdout(),
010d7370 3358 "\n\nCopyright 1987-2011, Larry Wall\n");
79072805 3359#ifdef MSDOS
b0e47665
GS
3360 PerlIO_printf(PerlIO_stdout(),
3361 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3362#endif
3363#ifdef DJGPP
b0e47665
GS
3364 PerlIO_printf(PerlIO_stdout(),
3365 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3366 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3367#endif
79072805 3368#ifdef OS2
b0e47665
GS
3369 PerlIO_printf(PerlIO_stdout(),
3370 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3371 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3372#endif
79072805 3373#ifdef atarist
b0e47665
GS
3374 PerlIO_printf(PerlIO_stdout(),
3375 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3376#endif
a3f9223b 3377#ifdef __BEOS__
b0e47665
GS
3378 PerlIO_printf(PerlIO_stdout(),
3379 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3380#endif
1d84e8df 3381#ifdef MPE
b0e47665 3382 PerlIO_printf(PerlIO_stdout(),
e583a879 3383 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3384#endif
9d116dd7 3385#ifdef OEMVS
b0e47665
GS
3386 PerlIO_printf(PerlIO_stdout(),
3387 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3388#endif
495c5fdc 3389#ifdef __VOS__
b0e47665 3390 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3391 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3392#endif
092bebab 3393#ifdef __OPEN_VM
b0e47665
GS
3394 PerlIO_printf(PerlIO_stdout(),
3395 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3396#endif
a1a0e61e 3397#ifdef POSIX_BC
b0e47665
GS
3398 PerlIO_printf(PerlIO_stdout(),
3399 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3400#endif
f83d2536 3401#ifdef EPOC
b0e47665 3402 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3403 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3404#endif
e1caacb4 3405#ifdef UNDER_CE
b475b3e6
JH
3406 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3407 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3408 wce_hitreturn();
3409#endif
a0fd4948 3410#ifdef __SYMBIAN32__
27da23d5
JH
3411 PerlIO_printf(PerlIO_stdout(),
3412 "Symbian port by Nokia, 2004-2005\n");
3413#endif
baed7233
DL
3414#ifdef BINARY_BUILD_NOTICE
3415 BINARY_BUILD_NOTICE;
3416#endif
b0e47665
GS
3417 PerlIO_printf(PerlIO_stdout(),
3418 "\n\
79072805 3419Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3420GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3421Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3422this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3423Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3424 my_exit(0);
79072805 3425 case 'w':
b2e5e6ba 3426 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3427 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3428 }
599cee73
PM
3429 s++;
3430 return s;
3431 case 'W':
ac27b0f5 3432 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3433 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3434 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3435 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3436 s++;
3437 return s;
3438 case 'X':
ac27b0f5 3439 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3440 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3441 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3442 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3443 s++;
3444 return s;
a0d0e21e 3445 case '*':
79072805 3446 case ' ':
d3133c89
NC
3447 while( *s == ' ' )
3448 ++s;
3449 if (s[0] == '-') /* Additional switches on #! line. */
3450 return s+1;
79072805 3451 break;
a0d0e21e 3452 case '-':
79072805 3453 case 0:
51882d45 3454#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3455 case '\r':
3456#endif
79072805
LW
3457 case '\n':
3458 case '\t':
3459 break;
aa689395
PP
3460#ifdef ALTERNATE_SHEBANG
3461 case 'S': /* OS/2 needs -S on "extproc" line. */
3462 break;
3463#endif
79072805 3464 default:
cea2e8a9 3465 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3466 }
bd61b366 3467 return NULL;
79072805
LW
3468}
3469
3470/* compliments of Tom Christiansen */
3471
3472/* unexec() can be found in the Gnu emacs distribution */
ee580363 3473/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3474
3475void
864dbfa3 3476Perl_my_unexec(pTHX)
79072805 3477{
b37c2d43 3478 PERL_UNUSED_CONTEXT;
79072805 3479#ifdef UNEXEC
b37c2d43
AL
3480 SV * prog = newSVpv(BIN_EXP, 0);
3481 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3482 int status = 1;
79072805
LW
3483 extern int etext;
3484
396482e1 3485 sv_catpvs(prog, "/perl");
396482e1 3486 sv_catpvs(file, ".perldump");
79072805 3487
ee580363
GS
3488 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3489 /* unexec prints msg to stderr in case of failure */
6ad3d225 3490 PerlProc_exit(status);
79072805 3491#else
a5f75d66
AD
3492# ifdef VMS
3493# include <lib$routines.h>
3494 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3495# elif defined(WIN32) || defined(__CYGWIN__)
3496 Perl_croak(aTHX_ "dump is not supported");
aa689395 3497# else
79072805 3498 ABORT(); /* for use with undump */
aa689395