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Fix RT #84294 /((\w+)(?{print $2})){2,2}/ problem
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
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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
16 * --from Bilbo's song of Eärendil
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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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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37#ifdef NETWARE
38#include "nwutil.h"
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39#endif
40
df5cef82 41/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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42#ifdef I_UNISTD
43#include <unistd.h>
44#endif
a0d0e21e 45
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46#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
47# ifdef I_SYS_WAIT
48# include <sys/wait.h>
49# endif
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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
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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
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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 */
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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
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87#define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
139d0ce6 89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
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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;
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101 if (!PL_curinterp) {
102 PERL_SET_INTERP(my_perl);
3db8f154 103#if defined(USE_ITHREADS)
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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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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
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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 }
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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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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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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);
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241 if (PL_perl_destruct_level > 0)
242 init_interp();
243#endif
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244 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
245
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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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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);
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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;
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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 */
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292#endif
293
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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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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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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
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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
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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
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AB
321 HvSHAREKEYS_off(PL_strtab); /* mandatory */
322 hv_ksplit(PL_strtab, 512);
323
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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
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329#ifndef PERL_MICRO
330# ifdef USE_ENVIRON_ARRAY
0631ea03 331 PL_origenviron = environ;
2f42fcb0 332# endif
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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.
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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
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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));
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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
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393 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
394
a3e6e81e 395 PL_registered_mros = newHV();
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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/*
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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;
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NIS
415 return 0;
416}
417
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NC
418#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
419void
420Perl_dump_sv_child(pTHX_ SV *sv)
421{
422 ssize_t got;
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423 const int sock = PL_dumper_fd;
424 const int debug_fd = PerlIO_fileno(Perl_debug_log);
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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
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432 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
433
bf357333 434 if(sock == -1 || debug_fd == -1)
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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);
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462
463 if(got < 0) {
bf357333 464 perror("Debug leaking scalars parent sendmsg failed");
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465 abort();
466 }
bf357333
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467 if(got < sizeof(sv)) {
468 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
469 abort();
470 }
471
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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);
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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
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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
FR
564 if (PL_endav && !PL_minus_c) {
565 PL_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;
9ebf26ad 760 PL_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
8ebc5c01 908 /* clean up after study() */
3280af22 909 SvREFCNT_dec(PL_lastscream);
a0714e2c 910 PL_lastscream = NULL;
3280af22
NIS
911 Safefree(PL_screamfirst);
912 PL_screamfirst = 0;
913 Safefree(PL_screamnext);
914 PL_screamnext = 0;
8ebc5c01 915
7d5ea4e7
GS
916 /* float buffer */
917 Safefree(PL_efloatbuf);
bd61b366 918 PL_efloatbuf = NULL;
7d5ea4e7
GS
919 PL_efloatsize = 0;
920
8ebc5c01 921 /* startup and shutdown function lists */
3280af22 922 SvREFCNT_dec(PL_beginav);
5a837c8f 923 SvREFCNT_dec(PL_beginav_save);
3280af22 924 SvREFCNT_dec(PL_endav);
7d30b5c4 925 SvREFCNT_dec(PL_checkav);
ece599bd 926 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
927 SvREFCNT_dec(PL_unitcheckav);
928 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 929 SvREFCNT_dec(PL_initav);
7d49f689
NC
930 PL_beginav = NULL;
931 PL_beginav_save = NULL;
932 PL_endav = NULL;
933 PL_checkav = NULL;
934 PL_checkav_save = NULL;
3c10abe3
AG
935 PL_unitcheckav = NULL;
936 PL_unitcheckav_save = NULL;
7d49f689 937 PL_initav = NULL;
5618dfe8 938
8ebc5c01 939 /* shortcuts just get cleared */
a0714e2c
SS
940 PL_envgv = NULL;
941 PL_incgv = NULL;
942 PL_hintgv = NULL;
943 PL_errgv = NULL;
944 PL_argvgv = NULL;
945 PL_argvoutgv = NULL;
946 PL_stdingv = NULL;
947 PL_stderrgv = NULL;
948 PL_last_in_gv = NULL;
949 PL_replgv = NULL;
950 PL_DBgv = NULL;
951 PL_DBline = NULL;
952 PL_DBsub = NULL;
953 PL_DBsingle = NULL;
954 PL_DBtrace = NULL;
955 PL_DBsignal = NULL;
601f1833 956 PL_DBcv = NULL;
7d49f689 957 PL_dbargs = NULL;
5c284bb0 958 PL_debstash = NULL;
8ebc5c01 959
7a1c5554 960 SvREFCNT_dec(PL_argvout_stack);
7d49f689 961 PL_argvout_stack = NULL;
8ebc5c01 962
5c831c24 963 SvREFCNT_dec(PL_modglobal);
5c284bb0 964 PL_modglobal = NULL;
5c831c24 965 SvREFCNT_dec(PL_preambleav);
7d49f689 966 PL_preambleav = NULL;
5c831c24 967 SvREFCNT_dec(PL_subname);
a0714e2c 968 PL_subname = NULL;
ca0c25f6 969#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 970 SvREFCNT_dec(PL_pidstatus);
5c284bb0 971 PL_pidstatus = NULL;
ca0c25f6 972#endif
5c831c24 973 SvREFCNT_dec(PL_toptarget);
a0714e2c 974 PL_toptarget = NULL;
5c831c24 975 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
976 PL_bodytarget = NULL;
977 PL_formtarget = NULL;
5c831c24 978
d33b2eba 979 /* free locale stuff */
b9582b6a 980#ifdef USE_LOCALE_COLLATE
d33b2eba 981 Safefree(PL_collation_name);
bd61b366 982 PL_collation_name = NULL;
b9582b6a 983#endif
d33b2eba 984
b9582b6a 985#ifdef USE_LOCALE_NUMERIC
d33b2eba 986 Safefree(PL_numeric_name);
bd61b366 987 PL_numeric_name = NULL;
a453c169 988 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 989 PL_numeric_radix_sv = NULL;
b9582b6a 990#endif
d33b2eba 991
5c831c24
GS
992 /* clear utf8 character classes */
993 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
994 SvREFCNT_dec(PL_utf8_ascii);
995 SvREFCNT_dec(PL_utf8_alpha);
996 SvREFCNT_dec(PL_utf8_space);
997 SvREFCNT_dec(PL_utf8_cntrl);
998 SvREFCNT_dec(PL_utf8_graph);
999 SvREFCNT_dec(PL_utf8_digit);
1000 SvREFCNT_dec(PL_utf8_upper);
1001 SvREFCNT_dec(PL_utf8_lower);
1002 SvREFCNT_dec(PL_utf8_print);
1003 SvREFCNT_dec(PL_utf8_punct);
1004 SvREFCNT_dec(PL_utf8_xdigit);
1005 SvREFCNT_dec(PL_utf8_mark);
1006 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1007 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1008 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1009 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1010 SvREFCNT_dec(PL_utf8_idstart);
1011 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1012 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1013 PL_utf8_alnum = NULL;
a0714e2c
SS
1014 PL_utf8_ascii = NULL;
1015 PL_utf8_alpha = NULL;
1016 PL_utf8_space = NULL;
1017 PL_utf8_cntrl = NULL;
1018 PL_utf8_graph = NULL;
1019 PL_utf8_digit = NULL;
1020 PL_utf8_upper = NULL;
1021 PL_utf8_lower = NULL;
1022 PL_utf8_print = NULL;
1023 PL_utf8_punct = NULL;
1024 PL_utf8_xdigit = NULL;
1025 PL_utf8_mark = NULL;
1026 PL_utf8_toupper = NULL;
1027 PL_utf8_totitle = NULL;
1028 PL_utf8_tolower = NULL;
1029 PL_utf8_tofold = NULL;
1030 PL_utf8_idstart = NULL;
1031 PL_utf8_idcont = NULL;
2726813d 1032 PL_utf8_foldclosures = NULL;
5c831c24 1033
971a9dd3 1034 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1035 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1036 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1037 cophh_free(CopHINTHASH_get(&PL_compiling));
1038 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1039 CopFILE_free(&PL_compiling);
1040 CopSTASH_free(&PL_compiling);
5c831c24 1041
a0d0e21e 1042 /* Prepare to destruct main symbol table. */
5f05dabc 1043
3280af22 1044 hv = PL_defstash;
ca556bcd
DM
1045 /* break ref loop *:: <=> %:: */
1046 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1047 PL_defstash = 0;
a0d0e21e 1048 SvREFCNT_dec(hv);
5c831c24 1049 SvREFCNT_dec(PL_curstname);
a0714e2c 1050 PL_curstname = NULL;
a0d0e21e 1051
5a844595
GS
1052 /* clear queued errors */
1053 SvREFCNT_dec(PL_errors);
a0714e2c 1054 PL_errors = NULL;
5a844595 1055
dd69841b
BB
1056 SvREFCNT_dec(PL_isarev);
1057
a0d0e21e 1058 FREETMPS;
9b387841 1059 if (destruct_level >= 2) {
3280af22 1060 if (PL_scopestack_ix != 0)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1062 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1063 (long)PL_scopestack_ix);
3280af22 1064 if (PL_savestack_ix != 0)
9b387841
NC
1065 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1066 "Unbalanced saves: %ld more saves than restores\n",
1067 (long)PL_savestack_ix);
3280af22 1068 if (PL_tmps_floor != -1)
9b387841
NC
1069 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1070 (long)PL_tmps_floor + 1);
a0d0e21e 1071 if (cxstack_ix != -1)
9b387841
NC
1072 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1073 (long)cxstack_ix + 1);
a0d0e21e 1074 }
8990e307 1075
776df701 1076#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1077 /* the entries in this list are allocated via SV PVX's, so get freed
1078 * in sv_clean_all */
1079 Safefree(PL_my_cxt_list);
776df701 1080#endif
57bb2458 1081
8990e307 1082 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1083
1084 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1085 while (sv_clean_all() > 2)
5226ed68
JH
1086 ;
1087
d4777f27
GS
1088 AvREAL_off(PL_fdpid); /* no surviving entries */
1089 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1090 PL_fdpid = NULL;
d33b2eba 1091
6c644e78
GS
1092#ifdef HAVE_INTERP_INTERN
1093 sys_intern_clear();
1094#endif
1095
6e72f9df
PP
1096 /* Destruct the global string table. */
1097 {
1098 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1099 * so that sv_free() won't fail on them.
80459961
NC
1100 * Now that the global string table is using a single hunk of memory
1101 * for both HE and HEK, we either need to explicitly unshare it the
1102 * correct way, or actually free things here.
6e72f9df 1103 */
80459961
NC
1104 I32 riter = 0;
1105 const I32 max = HvMAX(PL_strtab);
c4420975 1106 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1107 HE *hent = array[0];
1108
6e72f9df 1109 for (;;) {
0453d815 1110 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1111 HE * const next = HeNEXT(hent);
9014280d 1112 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1113 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1114 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1115 Safefree(hent);
1116 hent = next;
6e72f9df
PP
1117 }
1118 if (!hent) {
1119 if (++riter > max)
1120 break;
1121 hent = array[riter];
1122 }
1123 }
80459961
NC
1124
1125 Safefree(array);
1126 HvARRAY(PL_strtab) = 0;
1127 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1128 }
3280af22 1129 SvREFCNT_dec(PL_strtab);
6e72f9df 1130
e652bb2f 1131#ifdef USE_ITHREADS
c21d1a0f 1132 /* free the pointer tables used for cloning */
a0739874 1133 ptr_table_free(PL_ptr_table);
bf9cdc68 1134 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1135#endif
a0739874 1136
d33b2eba
GS
1137 /* free special SVs */
1138
1139 SvREFCNT(&PL_sv_yes) = 0;
1140 sv_clear(&PL_sv_yes);
1141 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1142 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1143
1144 SvREFCNT(&PL_sv_no) = 0;
1145 sv_clear(&PL_sv_no);
1146 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1147 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1148
9f375a43
DM
1149 {
1150 int i;
1151 for (i=0; i<=2; i++) {
1152 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1153 sv_clear(PERL_DEBUG_PAD(i));
1154 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1155 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1156 }
1157 }
1158
0453d815 1159 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1160 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1161
eba0f806
DM
1162#ifdef DEBUG_LEAKING_SCALARS
1163 if (PL_sv_count != 0) {
1164 SV* sva;
1165 SV* sv;
1166 register SV* svend;
1167
ad64d0ec 1168 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1169 svend = &sva[SvREFCNT(sva)];
1170 for (sv = sva + 1; sv < svend; ++sv) {
1171 if (SvTYPE(sv) != SVTYPEMASK) {
a548cda8 1172 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1173 " flags=0x%"UVxf
fd0854ff 1174 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1175 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1176 "serial %"UVuf"\n",
574b8821
NC
1177 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1178 pTHX__VALUE,
fd0854ff
DM
1179 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1180 sv->sv_debug_line,
1181 sv->sv_debug_inpad ? "for" : "by",
1182 sv->sv_debug_optype ?
1183 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1184 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1185 sv->sv_debug_serial
fd0854ff 1186 );
2aa47728 1187#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1188 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1189#endif
eba0f806
DM
1190 }
1191 }
1192 }
1193 }
2aa47728
NC
1194#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1195 {
1196 int status;
1197 fd_set rset;
1198 /* Wait for up to 4 seconds for child to terminate.
1199 This seems to be the least effort way of timing out on reaping
1200 its exit status. */
1201 struct timeval waitfor = {4, 0};
41e4abd8 1202 int sock = PL_dumper_fd;
2aa47728
NC
1203
1204 shutdown(sock, 1);
1205 FD_ZERO(&rset);
1206 FD_SET(sock, &rset);
1207 select(sock + 1, &rset, NULL, NULL, &waitfor);
1208 waitpid(child, &status, WNOHANG);
1209 close(sock);
1210 }
1211#endif
eba0f806 1212#endif
77abb4c6
NC
1213#ifdef DEBUG_LEAKING_SCALARS_ABORT
1214 if (PL_sv_count)
1215 abort();
1216#endif
bf9cdc68 1217 PL_sv_count = 0;
eba0f806 1218
f1fac472
NC
1219#ifdef PERL_DEBUG_READONLY_OPS
1220 free(PL_slabs);
1221 PL_slabs = NULL;
1222 PL_slab_count = 0;
1223#endif
eba0f806 1224
56a2bab7 1225#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1226 /* No more IO - including error messages ! */
1227 PerlIO_cleanup(aTHX);
1228#endif
1229
9f4bd222 1230 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1231 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1232 for no arg - and will try and SvREFCNT_dec it.
1233 */
1234 SvREFCNT(&PL_sv_undef) = 0;
1235 SvREADONLY_off(&PL_sv_undef);
1236
3280af22 1237 Safefree(PL_origfilename);
bd61b366 1238 PL_origfilename = NULL;
3280af22 1239 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1240 PL_reg_start_tmp = (char**)NULL;
1241 PL_reg_start_tmpl = 0;
43c5f42d 1242 Safefree(PL_reg_curpm);
82ba1be6 1243 Safefree(PL_reg_poscache);
dd28f7bb 1244 free_tied_hv_pool();
3280af22 1245 Safefree(PL_op_mask);
cf36064f 1246 Safefree(PL_psig_name);
bf9cdc68 1247 PL_psig_name = (SV**)NULL;
d525a7b2 1248 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1249 {
1250 /* We need to NULL PL_psig_pend first, so that
1251 signal handlers know not to use it */
1252 int *psig_save = PL_psig_pend;
1253 PL_psig_pend = (int*)NULL;
1254 Safefree(psig_save);
1255 }
a0714e2c 1256 PL_formfeed = NULL;
6e72f9df 1257 nuke_stacks();
bf9cdc68
RG
1258 PL_tainting = FALSE;
1259 PL_taint_warn = FALSE;
3280af22 1260 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1261 PL_debug = 0;
ac27b0f5 1262
a0d0e21e 1263 DEBUG_P(debprofdump());
d33b2eba 1264
e5dd39fc 1265#ifdef USE_REENTRANT_API
10bc17b6 1266 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1267#endif
1268
612f20c3
GS
1269 sv_free_arenas();
1270
5d9a96ca
DM
1271 while (PL_regmatch_slab) {
1272 regmatch_slab *s = PL_regmatch_slab;
1273 PL_regmatch_slab = PL_regmatch_slab->next;
1274 Safefree(s);
1275 }
1276
fc36a67e
PP
1277 /* As the absolutely last thing, free the non-arena SV for mess() */
1278
3280af22 1279 if (PL_mess_sv) {
f350b448
NC
1280 /* we know that type == SVt_PVMG */
1281
9c63abab 1282 /* it could have accumulated taint magic */
f350b448
NC
1283 MAGIC* mg;
1284 MAGIC* moremagic;
1285 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1286 moremagic = mg->mg_moremagic;
1287 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1288 && mg->mg_len >= 0)
1289 Safefree(mg->mg_ptr);
1290 Safefree(mg);
9c63abab 1291 }
f350b448 1292
fc36a67e 1293 /* we know that type >= SVt_PV */
8bd4d4c5 1294 SvPV_free(PL_mess_sv);
3280af22
NIS
1295 Safefree(SvANY(PL_mess_sv));
1296 Safefree(PL_mess_sv);
a0714e2c 1297 PL_mess_sv = NULL;
fc36a67e 1298 }
37038d91 1299 return STATUS_EXIT;
79072805
LW
1300}
1301
954c1994
GS
1302/*
1303=for apidoc perl_free
1304
1305Releases a Perl interpreter. See L<perlembed>.
1306
1307=cut
1308*/
1309
79072805 1310void
0cb96387 1311perl_free(pTHXx)
79072805 1312{
5174512c
NC
1313 dVAR;
1314
7918f24d
NC
1315 PERL_ARGS_ASSERT_PERL_FREE;
1316
c301d606
DM
1317 if (PL_veto_cleanup)
1318 return;
1319
7cb608b5 1320#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1321 {
1322 /*
1323 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1324 * value as we're probably hunting memory leaks then
1325 */
1326 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1327 if (!s || atoi(s) == 0) {
4fd0a9b8 1328 const U32 old_debug = PL_debug;
55ef9aae
MHM
1329 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1330 thread at thread exit. */
4fd0a9b8
NC
1331 if (DEBUG_m_TEST) {
1332 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1333 "free this thread's memory\n");
1334 PL_debug &= ~ DEBUG_m_FLAG;
1335 }
55ef9aae
MHM
1336 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1337 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1338 PL_debug = old_debug;
55ef9aae
MHM
1339 }
1340 }
7cb608b5
NC
1341#endif
1342
acfe0abc 1343#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1344# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1345 {
acfe0abc 1346# ifdef NETWARE
7af12a34 1347 void *host = nw_internal_host;
acfe0abc 1348# else
7af12a34 1349 void *host = w32_internal_host;
acfe0abc 1350# endif
7af12a34 1351 PerlMem_free(aTHXx);
acfe0abc 1352# ifdef NETWARE
7af12a34 1353 nw_delete_internal_host(host);
acfe0abc 1354# else
7af12a34 1355 win32_delete_internal_host(host);
acfe0abc 1356# endif
7af12a34 1357 }
1c0ca838
GS
1358# else
1359 PerlMem_free(aTHXx);
1360# endif
acfe0abc
GS
1361#else
1362 PerlMem_free(aTHXx);
76e3520e 1363#endif
79072805
LW
1364}
1365
b7f7fff6 1366#if defined(USE_ITHREADS)
aebd1ac7
GA
1367/* provide destructors to clean up the thread key when libperl is unloaded */
1368#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1369
826955bd 1370#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1371#pragma fini "perl_fini"
666ad1ec
GA
1372#elif defined(__sun) && !defined(__GNUC__)
1373#pragma fini (perl_fini)
aebd1ac7
GA
1374#endif
1375
0dbb1585
AL
1376static void
1377#if defined(__GNUC__)
1378__attribute__((destructor))
aebd1ac7 1379#endif
de009b76 1380perl_fini(void)
aebd1ac7 1381{
27da23d5 1382 dVAR;
c301d606 1383 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1384 FREE_THREAD_KEY;
1385}
1386
1387#endif /* WIN32 */
1388#endif /* THREADS */
1389
4b556e6c 1390void
864dbfa3 1391Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1392{
97aff369 1393 dVAR;
3280af22
NIS
1394 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1395 PL_exitlist[PL_exitlistlen].fn = fn;
1396 PL_exitlist[PL_exitlistlen].ptr = ptr;
1397 ++PL_exitlistlen;
4b556e6c
JD
1398}
1399
56cf6df8
RGS
1400#ifdef HAS_PROCSELFEXE
1401/* This is a function so that we don't hold on to MAXPATHLEN
1402 bytes of stack longer than necessary
1403 */
1404STATIC void
e1ec3a88 1405S_procself_val(pTHX_ SV *sv, const char *arg0)
56cf6df8
RGS
1406{
1407 char buf[MAXPATHLEN];
1408 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1409
1410 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1411 includes a spurious NUL which will cause $^X to fail in system
1412 or backticks (this will prevent extensions from being built and
1413 many tests from working). readlink is not meant to add a NUL.
1414 Normal readlink works fine.
1415 */
1416 if (len > 0 && buf[len-1] == '\0') {
1417 len--;
1418 }
1419
1420 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1421 returning the text "unknown" from the readlink rather than the path
1422 to the executable (or returning an error from the readlink). Any valid
1423 path has a '/' in it somewhere, so use that to validate the result.
1424 See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1425 */
1426 if (len > 0 && memchr(buf, '/', len)) {
1427 sv_setpvn(sv,buf,len);
1428 }
1429 else {
1430 sv_setpv(sv,arg0);
1431 }
1432}
1433#endif /* HAS_PROCSELFEXE */
b7975bdd
NC
1434
1435STATIC void
1436S_set_caret_X(pTHX) {
97aff369 1437 dVAR;
fafc274c 1438 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd
NC
1439 if (tmpgv) {
1440#ifdef HAS_PROCSELFEXE
1441 S_procself_val(aTHX_ GvSV(tmpgv), PL_origargv[0]);
1442#else
1443#ifdef OS2
c69033f2 1444 sv_setpv(GvSVn(tmpgv), os2_execname(aTHX));
b7975bdd 1445#else
c69033f2 1446 sv_setpv(GvSVn(tmpgv),PL_origargv[0]);
b7975bdd
NC
1447#endif
1448#endif
1449 }
1450}
1451
954c1994
GS
1452/*
1453=for apidoc perl_parse
1454
1455Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1456
1457=cut
1458*/
1459
79072805 1460int
0cb96387 1461perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1462{
27da23d5 1463 dVAR;
6224f72b 1464 I32 oldscope;
6224f72b 1465 int ret;
db36c5a1 1466 dJMPENV;
8d063cd8 1467
7918f24d
NC
1468 PERL_ARGS_ASSERT_PERL_PARSE;
1469#ifndef MULTIPLICITY
ed6c66dd 1470 PERL_UNUSED_ARG(my_perl);
7918f24d 1471#endif
9d4ba2ae 1472
b0891165
JH
1473#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1474 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1475 * This MUST be done before any hash stores or fetches take place.
486ec47a 1476 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1477 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1478 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1479 if (!PL_rehash_seed_set)
1480 PL_rehash_seed = get_hash_seed();
b0891165 1481 {
9d4ba2ae 1482 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1483
1b6737cc
AL
1484 if (s && (atoi(s) == 1))
1485 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1486 }
1487#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1488
3280af22 1489 PL_origargc = argc;
e2975953 1490 PL_origargv = argv;
a0d0e21e 1491
a2722ac9
GA
1492 if (PL_origalen != 0) {
1493 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1494 }
1495 else {
3cb9023d
JH
1496 /* Set PL_origalen be the sum of the contiguous argv[]
1497 * elements plus the size of the env in case that it is
e9137a8e 1498 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1499 * as the maximum modifiable length of $0. In the worst case
1500 * the area we are able to modify is limited to the size of
43c32782 1501 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1502 * --jhi */
e1ec3a88 1503 const char *s = NULL;
54bfe034 1504 int i;
1b6737cc 1505 const UV mask =
7d8e7db3 1506 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1507 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1508 const UV aligned =
43c32782
JH
1509 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1510
1511 /* See if all the arguments are contiguous in memory. Note
1512 * that 'contiguous' is a loose term because some platforms
1513 * align the argv[] and the envp[]. If the arguments look
1514 * like non-aligned, assume that they are 'strictly' or
1515 * 'traditionally' contiguous. If the arguments look like
1516 * aligned, we just check that they are within aligned
1517 * PTRSIZE bytes. As long as no system has something bizarre
1518 * like the argv[] interleaved with some other data, we are
1519 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1520 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1521 while (*s) s++;
1522 for (i = 1; i < PL_origargc; i++) {
1523 if ((PL_origargv[i] == s + 1
43c32782 1524#ifdef OS2
c8941eeb 1525 || PL_origargv[i] == s + 2
43c32782 1526#endif
c8941eeb
JH
1527 )
1528 ||
1529 (aligned &&
1530 (PL_origargv[i] > s &&
1531 PL_origargv[i] <=
1532 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1533 )
1534 {
1535 s = PL_origargv[i];
1536 while (*s) s++;
1537 }
1538 else
1539 break;
54bfe034 1540 }
54bfe034 1541 }
a4a109c2
JD
1542
1543#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1544 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1545 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1546 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1547 ||
1548 (aligned &&
1549 (PL_origenviron[0] > s &&
1550 PL_origenviron[0] <=
1551 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1552 )
1553 {
9d419b5f 1554#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1555 s = PL_origenviron[0];
1556 while (*s) s++;
1557#endif
bd61b366 1558 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1559 /* Force copy of environment. */
1560 for (i = 1; PL_origenviron[i]; i++) {
1561 if (PL_origenviron[i] == s + 1
1562 ||
1563 (aligned &&
1564 (PL_origenviron[i] > s &&
1565 PL_origenviron[i] <=
1566 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1567 )
1568 {
1569 s = PL_origenviron[i];
1570 while (*s) s++;
1571 }
1572 else
1573 break;
54bfe034 1574 }
43c32782 1575 }
54bfe034 1576 }
a4a109c2
JD
1577#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1578
2d2af554 1579 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1580 }
1581
3280af22 1582 if (PL_do_undump) {
a0d0e21e
LW
1583
1584 /* Come here if running an undumped a.out. */
1585
3280af22
NIS
1586 PL_origfilename = savepv(argv[0]);
1587 PL_do_undump = FALSE;
a0d0e21e 1588 cxstack_ix = -1; /* start label stack again */
748a9306 1589 init_ids();
b7975bdd
NC
1590 assert (!PL_tainted);
1591 TAINT;
1592 S_set_caret_X(aTHX);
1593 TAINT_NOT;
a0d0e21e
LW
1594 init_postdump_symbols(argc,argv,env);
1595 return 0;
1596 }
1597
3280af22 1598 if (PL_main_root) {
3280af22 1599 op_free(PL_main_root);
5f66b61c 1600 PL_main_root = NULL;
ff0cee69 1601 }
5f66b61c 1602 PL_main_start = NULL;
3280af22 1603 SvREFCNT_dec(PL_main_cv);
601f1833 1604 PL_main_cv = NULL;
79072805 1605
3280af22
NIS
1606 time(&PL_basetime);
1607 oldscope = PL_scopestack_ix;
599cee73 1608 PL_dowarn = G_WARN_OFF;
f86702cc 1609
14dd3ad8 1610 JMPENV_PUSH(ret);
6224f72b 1611 switch (ret) {
312caa8e 1612 case 0:
14dd3ad8 1613 parse_body(env,xsinit);
9ebf26ad 1614 if (PL_unitcheckav) {
3c10abe3 1615 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1616 }
1617 if (PL_checkav) {
1618 PL_phase = PERL_PHASE_CHECK;
7d30b5c4 1619 call_list(oldscope, PL_checkav);
9ebf26ad 1620 }
14dd3ad8
GS
1621 ret = 0;
1622 break;
6224f72b
GS
1623 case 1:
1624 STATUS_ALL_FAILURE;
1625 /* FALL THROUGH */
1626 case 2:
1627 /* my_exit() was called */
3280af22 1628 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1629 LEAVE;
1630 FREETMPS;
3280af22 1631 PL_curstash = PL_defstash;
9ebf26ad 1632 if (PL_unitcheckav) {
3c10abe3 1633 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1634 }
1635 if (PL_checkav) {
1636 PL_phase = PERL_PHASE_CHECK;
7d30b5c4 1637 call_list(oldscope, PL_checkav);
9ebf26ad 1638 }
37038d91 1639 ret = STATUS_EXIT;
14dd3ad8 1640 break;
6224f72b 1641 case 3:
bf49b057 1642 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1643 ret = 1;
1644 break;
6224f72b 1645 }
14dd3ad8
GS
1646 JMPENV_POP;
1647 return ret;
1648}
1649
4a5df386
NC
1650/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1651 miniperl, and we need to see those flags reflected in the values here. */
1652
1653/* What this returns is subject to change. Use the public interface in Config.
1654 */
1655static void
1656S_Internals_V(pTHX_ CV *cv)
1657{
1658 dXSARGS;
1659#ifdef LOCAL_PATCH_COUNT
1660 const int local_patch_count = LOCAL_PATCH_COUNT;
1661#else
1662 const int local_patch_count = 0;
1663#endif
2dc296d2 1664 const int entries = 3 + local_patch_count;
4a5df386
NC
1665 int i;
1666 static char non_bincompat_options[] =
1667# ifdef DEBUGGING
1668 " DEBUGGING"
1669# endif
1670# ifdef NO_MATHOMS
0d311fbe 1671 " NO_MATHOMS"
4a5df386
NC
1672# endif
1673# ifdef PERL_DISABLE_PMC
1674 " PERL_DISABLE_PMC"
1675# endif
1676# ifdef PERL_DONT_CREATE_GVSV
1677 " PERL_DONT_CREATE_GVSV"
1678# endif
9a044a43
NC
1679# ifdef PERL_EXTERNAL_GLOB
1680 " PERL_EXTERNAL_GLOB"
1681# endif
4a5df386
NC
1682# ifdef PERL_IS_MINIPERL
1683 " PERL_IS_MINIPERL"
1684# endif
1685# ifdef PERL_MALLOC_WRAP
1686 " PERL_MALLOC_WRAP"
1687# endif
1688# ifdef PERL_MEM_LOG
1689 " PERL_MEM_LOG"
1690# endif
1691# ifdef PERL_MEM_LOG_NOIMPL
1692 " PERL_MEM_LOG_NOIMPL"
1693# endif
1694# ifdef PERL_USE_DEVEL
1695 " PERL_USE_DEVEL"
1696# endif
1697# ifdef PERL_USE_SAFE_PUTENV
1698 " PERL_USE_SAFE_PUTENV"
1699# endif
de618ee4
NC
1700# ifdef USE_ATTRIBUTES_FOR_PERLIO
1701 " USE_ATTRIBUTES_FOR_PERLIO"
1702# endif
4a5df386
NC
1703# ifdef USE_FAST_STDIO
1704 " USE_FAST_STDIO"
1705# endif
5a8d8935
NC
1706# ifdef USE_PERL_ATOF
1707 " USE_PERL_ATOF"
1708# endif
0d311fbe
NC
1709# ifdef USE_SITECUSTOMIZE
1710 " USE_SITECUSTOMIZE"
1711# endif
4a5df386
NC
1712 ;
1713 PERL_UNUSED_ARG(cv);
1714 PERL_UNUSED_ARG(items);
1715
1716 EXTEND(SP, entries);
1717
1718 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1719 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1720 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1721
1722#ifdef __DATE__
1723# ifdef __TIME__
1724 PUSHs(Perl_newSVpvn_flags(aTHX_
1725 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1726 SVs_TEMP));
1727# else
1728 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1729 SVs_TEMP));
1730# endif
1731#else
1732 PUSHs(&PL_sv_undef);
1733#endif
1734
4a5df386
NC
1735 for (i = 1; i <= local_patch_count; i++) {
1736 /* This will be an undef, if PL_localpatches[i] is NULL. */
1737 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1738 }
1739
1740 XSRETURN(entries);
1741}
1742
be71fc8f
NC
1743#define INCPUSH_UNSHIFT 0x01
1744#define INCPUSH_ADD_OLD_VERS 0x02
1745#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1746#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1747#define INCPUSH_NOT_BASEDIR 0x10
1748#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1749#define INCPUSH_ADD_SUB_DIRS \
1750 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1751
312caa8e 1752STATIC void *
14dd3ad8 1753S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1754{
27da23d5 1755 dVAR;
2f9285f8 1756 PerlIO *rsfp;
312caa8e 1757 int argc = PL_origargc;
8f42b153 1758 char **argv = PL_origargv;
e1ec3a88 1759 const char *scriptname = NULL;
312caa8e 1760 VOL bool dosearch = FALSE;
c7030b81 1761 register char c;
737c24fc 1762 bool doextract = FALSE;
bd61b366 1763 const char *cddir = NULL;
ab019eaa 1764#ifdef USE_SITECUSTOMIZE
20ef40cf 1765 bool minus_f = FALSE;
ab019eaa 1766#endif
009d90df 1767 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1768 bool add_read_e_script = FALSE;
009d90df 1769
9ebf26ad
FR
1770 PL_phase = PERL_PHASE_START;
1771
009d90df 1772 SvGROW(linestr_sv, 80);
76f68e9b 1773 sv_setpvs(linestr_sv,"");
312caa8e 1774
6224f72b 1775 init_main_stash();
54310121 1776
c7030b81
NC
1777 {
1778 const char *s;
6224f72b
GS
1779 for (argc--,argv++; argc > 0; argc--,argv++) {
1780 if (argv[0][0] != '-' || !argv[0][1])
1781 break;
6224f72b
GS
1782 s = argv[0]+1;
1783 reswitch:
47f56822 1784 switch ((c = *s)) {
729a02f2 1785 case 'C':
1d5472a9
GS
1786#ifndef PERL_STRICT_CR
1787 case '\r':
1788#endif
6224f72b
GS
1789 case ' ':
1790 case '0':
1791 case 'F':
1792 case 'a':
1793 case 'c':
1794 case 'd':
1795 case 'D':
1796 case 'h':
1797 case 'i':
1798 case 'l':
1799 case 'M':
1800 case 'm':
1801 case 'n':
1802 case 'p':
1803 case 's':
1804 case 'u':
1805 case 'U':
1806 case 'v':
599cee73
PM
1807 case 'W':
1808 case 'X':
6224f72b 1809 case 'w':
97bd5664 1810 if ((s = moreswitches(s)))
6224f72b
GS
1811 goto reswitch;
1812 break;
33b78306 1813
1dbad523 1814 case 't':
22f7c9c9 1815 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1816 if( !PL_tainting ) {
1817 PL_taint_warn = TRUE;
1818 PL_tainting = TRUE;
1819 }
1820 s++;
1821 goto reswitch;
6224f72b 1822 case 'T':
22f7c9c9 1823 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1824 PL_tainting = TRUE;
317ea90d 1825 PL_taint_warn = FALSE;
6224f72b
GS
1826 s++;
1827 goto reswitch;
f86702cc 1828
bc9b29db
RH
1829 case 'E':
1830 PL_minus_E = TRUE;
1831 /* FALL THROUGH */
6224f72b 1832 case 'e':
f20b2998 1833 forbid_setid('e', FALSE);
3280af22 1834 if (!PL_e_script) {
396482e1 1835 PL_e_script = newSVpvs("");
5486870f 1836 add_read_e_script = TRUE;
6224f72b
GS
1837 }
1838 if (*++s)
3280af22 1839 sv_catpv(PL_e_script, s);
6224f72b 1840 else if (argv[1]) {
3280af22 1841 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1842 argc--,argv++;
1843 }
1844 else
47f56822 1845 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1846 sv_catpvs(PL_e_script, "\n");
6224f72b 1847 break;
afe37c7d 1848
20ef40cf 1849 case 'f':
f5542d3a 1850#ifdef USE_SITECUSTOMIZE
20ef40cf 1851 minus_f = TRUE;
f5542d3a 1852#endif
20ef40cf
GA
1853 s++;
1854 goto reswitch;
1855
6224f72b 1856 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1857 forbid_setid('I', FALSE);
bd61b366 1858 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1859 argc--,argv++;
1860 }
6224f72b 1861 if (s && *s) {
0df16ed7 1862 STRLEN len = strlen(s);
55b4bc1c 1863 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1864 }
1865 else
a67e862a 1866 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1867 break;
6224f72b 1868 case 'S':
f20b2998 1869 forbid_setid('S', FALSE);
6224f72b
GS
1870 dosearch = TRUE;
1871 s++;
1872 goto reswitch;
1873 case 'V':
7edfd0ef
NC
1874 {
1875 SV *opts_prog;
1876
7edfd0ef 1877 if (*++s != ':') {
37ca4a5b 1878 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1879 }
1880 else {
1881 ++s;
1882 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1883 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1884 0, s, 0);
1885 s += strlen(s);
1886 }
37ca4a5b 1887 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1888 /* don't look for script or read stdin */
1889 scriptname = BIT_BUCKET;
1890 goto reswitch;
6224f72b 1891 }
6224f72b 1892 case 'x':
737c24fc 1893 doextract = TRUE;
6224f72b 1894 s++;
304334da 1895 if (*s)
f4c556ac 1896 cddir = s;
6224f72b
GS
1897 break;
1898 case 0:
1899 break;
1900 case '-':
1901 if (!*++s || isSPACE(*s)) {
1902 argc--,argv++;
1903 goto switch_end;
1904 }
1905 /* catch use of gnu style long options */
1906 if (strEQ(s, "version")) {
dd374669 1907 s = (char *)"v";
6224f72b
GS
1908 goto reswitch;
1909 }
1910 if (strEQ(s, "help")) {
dd374669 1911 s = (char *)"h";
6224f72b
GS
1912 goto reswitch;
1913 }
1914 s--;
1915 /* FALL THROUGH */
1916 default:
cea2e8a9 1917 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1918 }
1919 }
c7030b81
NC
1920 }
1921
6224f72b 1922 switch_end:
54310121 1923
c7030b81
NC
1924 {
1925 char *s;
1926
f675dbe5
CB
1927 if (
1928#ifndef SECURE_INTERNAL_GETENV
1929 !PL_tainting &&
1930#endif
cf756827 1931 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1932 {
74288ac8
GS
1933 while (isSPACE(*s))
1934 s++;
317ea90d 1935 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1936 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1937 PL_tainting = TRUE;
317ea90d
MS
1938 PL_taint_warn = FALSE;
1939 }
74288ac8 1940 else {
bd61b366 1941 char *popt_copy = NULL;
74288ac8 1942 while (s && *s) {
54913509 1943 const char *d;
74288ac8
GS
1944 while (isSPACE(*s))
1945 s++;
1946 if (*s == '-') {
1947 s++;
1948 if (isSPACE(*s))
1949 continue;
1950 }
4ea8f8fb 1951 d = s;
74288ac8
GS
1952 if (!*s)
1953 break;
2b622f1a 1954 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1955 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1956 while (++s && *s) {
1957 if (isSPACE(*s)) {
cf756827 1958 if (!popt_copy) {
bfa6c418
NC
1959 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1960 s = popt_copy + (s - d);
1961 d = popt_copy;
cf756827 1962 }
4ea8f8fb
MS
1963 *s++ = '\0';
1964 break;
1965 }
1966 }
1c4db469 1967 if (*d == 't') {
317ea90d
MS
1968 if( !PL_tainting ) {
1969 PL_taint_warn = TRUE;
1970 PL_tainting = TRUE;
1971 }
1c4db469 1972 } else {
97bd5664 1973 moreswitches(d);
1c4db469 1974 }
6224f72b 1975 }
6224f72b
GS
1976 }
1977 }
c7030b81 1978 }
a0d0e21e 1979
43c0c913 1980#if defined(USE_SITECUSTOMIZE)
20ef40cf 1981 if (!minus_f) {
43c0c913 1982 /* The games with local $! are to avoid setting errno if there is no
404ad9dc 1983 sitecustomize script. */
43c0c913
NC
1984# ifdef PERL_IS_MINIPERL
1985 AV *const inc = GvAV(PL_incgv);
1986 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
1987
1988 if (inc0) {
1989 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
1990 Perl_newSVpvf(aTHX_
1991 "BEGIN { do {local $!; -f '%"SVf"/buildcustomize.pl'} && do '%"SVf"/buildcustomize.pl' }", *inc0, *inc0));
1992 }
1993# else
1994 /* SITELIB_EXP is a function call on Win32. */
404ad9dc 1995 const char *const sitelib = SITELIB_EXP;
29a861e7 1996 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc
NC
1997 Perl_newSVpvf(aTHX_
1998 "BEGIN { do {local $!; -f '%s/sitecustomize.pl'} && do '%s/sitecustomize.pl' }", sitelib, sitelib));
43c0c913 1999# endif
20ef40cf
GA
2000 }
2001#endif
2002
6224f72b
GS
2003 if (!scriptname)
2004 scriptname = argv[0];
3280af22 2005 if (PL_e_script) {
6224f72b
GS
2006 argc++,argv--;
2007 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2008 }
bd61b366 2009 else if (scriptname == NULL) {
6224f72b
GS
2010#ifdef MSDOS
2011 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2012 moreswitches("h");
6224f72b
GS
2013#endif
2014 scriptname = "-";
2015 }
2016
b7975bdd
NC
2017 /* Set $^X early so that it can be used for relocatable paths in @INC */
2018 assert (!PL_tainted);
2019 TAINT;
2020 S_set_caret_X(aTHX);
2021 TAINT_NOT;
2cace6ac 2022 init_perllib();
6224f72b 2023
a52eba0e 2024 {
f20b2998 2025 bool suidscript = FALSE;
829372d3 2026
cc69b689 2027 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2028
2f9285f8 2029 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2030 linestr_sv, rsfp);
6224f72b 2031
64ca3a65 2032#ifndef PERL_MICRO
a52eba0e
NC
2033# if defined(SIGCHLD) || defined(SIGCLD)
2034 {
2035# ifndef SIGCHLD
2036# define SIGCHLD SIGCLD
2037# endif
2038 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2039 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2040 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2041 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2042 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2043 }
0b5b802d 2044 }
a52eba0e 2045# endif
64ca3a65 2046#endif
0b5b802d 2047
737c24fc 2048 if (doextract) {
faef540c 2049
f20b2998 2050 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2051 setuid scripts. */
2052 forbid_setid('x', suidscript);
f20b2998 2053 /* Hence you can't get here if suidscript is true */
faef540c 2054
2f9285f8 2055 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2056 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2057 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2058 }
f4c556ac 2059 }
6224f72b 2060
ea726b52 2061 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2062 CvUNIQUE_on(PL_compcv);
2063
dd2155a4 2064 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2065
dd69841b
BB
2066 PL_isarev = newHV();
2067
0c4f7ff0 2068 boot_core_PerlIO();
6224f72b 2069 boot_core_UNIVERSAL();
e1a479c5 2070 boot_core_mro();
4a5df386 2071 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2072
2073 if (xsinit)
acfe0abc 2074 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2075#ifndef PERL_MICRO
d0d72822 2076#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2077 init_os_extras();
6224f72b 2078#endif
64ca3a65 2079#endif
6224f72b 2080
29209bc5 2081#ifdef USE_SOCKS
1b9c9cf5
DH
2082# ifdef HAS_SOCKS5_INIT
2083 socks5_init(argv[0]);
2084# else
29209bc5 2085 SOCKSinit(argv[0]);
1b9c9cf5 2086# endif
ac27b0f5 2087#endif
29209bc5 2088
6224f72b
GS
2089 init_predump_symbols();
2090 /* init_postdump_symbols not currently designed to be called */
2091 /* more than once (ENV isn't cleared first, for example) */
2092 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2093 if (!PL_do_undump)
6224f72b
GS
2094 init_postdump_symbols(argc,argv,env);
2095
27da23d5
JH
2096 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2097 * or explicitly in some platforms.
085a54d9 2098 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2099 * look like the user wants to use UTF-8. */
a0fd4948 2100#if defined(__SYMBIAN32__)
27da23d5
JH
2101 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2102#endif
e27b5b51 2103# ifndef PERL_IS_MINIPERL
06e66572
JH
2104 if (PL_unicode) {
2105 /* Requires init_predump_symbols(). */
a05d7ebb 2106 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2107 IO* io;
2108 PerlIO* fp;
2109 SV* sv;
2110
a05d7ebb 2111 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2112 * and the default open disciplines. */
a05d7ebb
JH
2113 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2114 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2115 (fp = IoIFP(io)))
2116 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2117 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2118 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2119 (fp = IoOFP(io)))
2120 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2121 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2122 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2123 (fp = IoOFP(io)))
2124 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2125 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2126 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2127 SVt_PV)))) {
a05d7ebb
JH
2128 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2129 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2130 if (in) {
2131 if (out)
76f68e9b 2132 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2133 else
76f68e9b 2134 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2135 }
2136 else if (out)
76f68e9b 2137 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2138 SvSETMAGIC(sv);
2139 }
b310b053
JH
2140 }
2141 }
e27b5b51 2142#endif
b310b053 2143
c7030b81
NC
2144 {
2145 const char *s;
4ffa73a3
JH
2146 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2147 if (strEQ(s, "unsafe"))
2148 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2149 else if (strEQ(s, "safe"))
2150 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2151 else
2152 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2153 }
c7030b81 2154 }
4ffa73a3 2155
81d86705 2156#ifdef PERL_MAD
c7030b81
NC
2157 {
2158 const char *s;
81d86705
NC
2159 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2160 PL_madskills = 1;
2161 PL_minus_c = 1;
2162 if (!s || !s[0])
2163 PL_xmlfp = PerlIO_stdout();
2164 else {
2165 PL_xmlfp = PerlIO_open(s, "w");
2166 if (!PL_xmlfp)
2167 Perl_croak(aTHX_ "Can't open %s", s);
2168 }
1a9a51d4 2169 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2170 }
c7030b81
NC
2171 }
2172
2173 {
2174 const char *s;
81d86705
NC
2175 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2176 PL_madskills = atoi(s);
1a9a51d4 2177 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2178 }
c7030b81 2179 }
81d86705
NC
2180#endif
2181
8eaa0acf 2182 lex_start(linestr_sv, rsfp, 0);
219f7226 2183 PL_subname = newSVpvs("main");
6224f72b 2184
5486870f
DM
2185 if (add_read_e_script)
2186 filter_add(read_e_script, NULL);
2187
6224f72b
GS
2188 /* now parse the script */
2189
93189314 2190 SETERRNO(0,SS_NORMAL);
28ac2b49 2191 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2192 if (PL_minus_c)
cea2e8a9 2193 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2194 else {
cea2e8a9 2195 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2196 PL_origfilename);
6224f72b
GS
2197 }
2198 }
57843af0 2199 CopLINE_set(PL_curcop, 0);
3280af22 2200 PL_curstash = PL_defstash;
3280af22
NIS
2201 if (PL_e_script) {
2202 SvREFCNT_dec(PL_e_script);
a0714e2c 2203 PL_e_script = NULL;
6224f72b
GS
2204 }
2205
3280af22 2206 if (PL_do_undump)
6224f72b
GS
2207 my_unexec();
2208
57843af0
GS
2209 if (isWARN_ONCE) {
2210 SAVECOPFILE(PL_curcop);
2211 SAVECOPLINE(PL_curcop);
3280af22 2212 gv_check(PL_defstash);
57843af0 2213 }
6224f72b
GS
2214
2215 LEAVE;
2216 FREETMPS;
2217
2218#ifdef MYMALLOC
f6a607bc
RGS
2219 {
2220 const char *s;
6224f72b
GS
2221 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2222 dump_mstats("after compilation:");
f6a607bc 2223 }
6224f72b
GS
2224#endif
2225
2226 ENTER;
febb3a6d 2227 PL_restartjmpenv = NULL;
3280af22 2228 PL_restartop = 0;
312caa8e 2229 return NULL;
6224f72b
GS
2230}
2231
954c1994
GS
2232/*
2233=for apidoc perl_run
2234
2235Tells a Perl interpreter to run. See L<perlembed>.
2236
2237=cut
2238*/
2239
6224f72b 2240int
0cb96387 2241perl_run(pTHXx)
6224f72b 2242{
97aff369 2243 dVAR;
6224f72b 2244 I32 oldscope;
14dd3ad8 2245 int ret = 0;
db36c5a1 2246 dJMPENV;
6224f72b 2247
7918f24d
NC
2248 PERL_ARGS_ASSERT_PERL_RUN;
2249#ifndef MULTIPLICITY
ed6c66dd 2250 PERL_UNUSED_ARG(my_perl);
7918f24d 2251#endif
9d4ba2ae 2252
3280af22 2253 oldscope = PL_scopestack_ix;
96e176bf
CL
2254#ifdef VMS
2255 VMSISH_HUSHED = 0;
2256#endif
6224f72b 2257
14dd3ad8 2258 JMPENV_PUSH(ret);
6224f72b
GS
2259 switch (ret) {
2260 case 1:
2261 cxstack_ix = -1; /* start context stack again */
312caa8e 2262 goto redo_body;
14dd3ad8 2263 case 0: /* normal completion */
14dd3ad8
GS
2264 redo_body:
2265 run_body(oldscope);
14dd3ad8
GS
2266 /* FALL THROUGH */
2267 case 2: /* my_exit() */
3280af22 2268 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2269 LEAVE;
2270 FREETMPS;
3280af22 2271 PL_curstash = PL_defstash;
3a1ee7e8 2272 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad
FR
2273 PL_endav && !PL_minus_c) {
2274 PL_phase = PERL_PHASE_END;
31d77e54 2275 call_list(oldscope, PL_endav);
9ebf26ad 2276 }
6224f72b
GS
2277#ifdef MYMALLOC
2278 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2279 dump_mstats("after execution: ");
2280#endif
37038d91 2281 ret = STATUS_EXIT;
14dd3ad8 2282 break;
6224f72b 2283 case 3:
312caa8e
CS
2284 if (PL_restartop) {
2285 POPSTACK_TO(PL_mainstack);
2286 goto redo_body;
6224f72b 2287 }
bf49b057 2288 PerlIO_printf(Perl_error_log, "panic: restartop\n");
312caa8e 2289 FREETMPS;
14dd3ad8
GS
2290 ret = 1;
2291 break;
6224f72b
GS
2292 }
2293
14dd3ad8
GS
2294 JMPENV_POP;
2295 return ret;
312caa8e
CS
2296}
2297
dd374669 2298STATIC void
14dd3ad8
GS
2299S_run_body(pTHX_ I32 oldscope)
2300{
97aff369 2301 dVAR;
6224f72b 2302 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2303 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2304
3280af22 2305 if (!PL_restartop) {
81d86705
NC
2306#ifdef PERL_MAD
2307 if (PL_xmlfp) {
2308 xmldump_all();
2309 exit(0); /* less likely to core dump than my_exit(0) */
2310 }
2311#endif
cf2782cd 2312#ifdef DEBUGGING
f0e3f042
CS
2313 if (DEBUG_x_TEST || DEBUG_B_TEST)
2314 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2315 if (!DEBUG_q_TEST)
2316 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2317#endif
6224f72b 2318
3280af22 2319 if (PL_minus_c) {
bf49b057 2320 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2321 my_exit(0);
2322 }
3280af22 2323 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2324 sv_setiv(PL_DBsingle, 1);
9ebf26ad
FR
2325 if (PL_initav) {
2326 PL_phase = PERL_PHASE_INIT;
3280af22 2327 call_list(oldscope, PL_initav);
9ebf26ad 2328 }
f1fac472
NC
2329#ifdef PERL_DEBUG_READONLY_OPS
2330 Perl_pending_Slabs_to_ro(aTHX);
2331#endif
6224f72b
GS
2332 }
2333
2334 /* do it */
2335
9ebf26ad
FR
2336 PL_phase = PERL_PHASE_RUN;
2337
3280af22 2338 if (PL_restartop) {
febb3a6d 2339 PL_restartjmpenv = NULL;
533c011a 2340 PL_op = PL_restartop;
3280af22 2341 PL_restartop = 0;
cea2e8a9 2342 CALLRUNOPS(aTHX);
6224f72b 2343 }
3280af22
NIS
2344 else if (PL_main_start) {
2345 CvDEPTH(PL_main_cv) = 1;
533c011a 2346 PL_op = PL_main_start;
cea2e8a9 2347 CALLRUNOPS(aTHX);
6224f72b 2348 }
f6b3007c
JH
2349 my_exit(0);
2350 /* NOTREACHED */
6224f72b
GS
2351}
2352
954c1994 2353/*
ccfc67b7
JH
2354=head1 SV Manipulation Functions
2355
954c1994
GS
2356=for apidoc p||get_sv
2357
64ace3f8
NC
2358Returns the SV of the specified Perl scalar. C<flags> are passed to
2359C<gv_fetchpv>. If C<GV_ADD> is set and the
2360Perl variable does not exist then it will be created. If C<flags> is zero
2361and the variable does not exist then NULL is returned.
954c1994
GS
2362
2363=cut
2364*/
2365
6224f72b 2366SV*
64ace3f8 2367Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2368{
2369 GV *gv;
7918f24d
NC
2370
2371 PERL_ARGS_ASSERT_GET_SV;
2372
64ace3f8 2373 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2374 if (gv)
2375 return GvSV(gv);
a0714e2c 2376 return NULL;
6224f72b
GS
2377}
2378
954c1994 2379/*
ccfc67b7
JH
2380=head1 Array Manipulation Functions
2381
954c1994
GS
2382=for apidoc p||get_av
2383
cbfd0a87
NC
2384Returns the AV of the specified Perl array. C<flags> are passed to
2385C<gv_fetchpv>. If C<GV_ADD> is set and the
2386Perl variable does not exist then it will be created. If C<flags> is zero
2387and the variable does not exist then NULL is returned.
954c1994
GS
2388
2389=cut
2390*/
2391
6224f72b 2392AV*
cbfd0a87 2393Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2394{
cbfd0a87 2395 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2396
2397 PERL_ARGS_ASSERT_GET_AV;
2398
cbfd0a87 2399 if (flags)
6224f72b
GS
2400 return GvAVn(gv);
2401 if (gv)
2402 return GvAV(gv);
7d49f689 2403 return NULL;
6224f72b
GS
2404}
2405
954c1994 2406/*
ccfc67b7
JH
2407=head1 Hash Manipulation Functions
2408
954c1994
GS
2409=for apidoc p||get_hv
2410
6673a63c
NC
2411Returns the HV of the specified Perl hash. C<flags> are passed to
2412C<gv_fetchpv>. If C<GV_ADD> is set and the
2413Perl variable does not exist then it will be created. If C<flags> is zero
2414and the variable does not exist then NULL is returned.
954c1994
GS
2415
2416=cut
2417*/
2418
6224f72b 2419HV*
6673a63c 2420Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2421{
6673a63c 2422 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2423
2424 PERL_ARGS_ASSERT_GET_HV;
2425
6673a63c 2426 if (flags)
a0d0e21e
LW
2427 return GvHVn(gv);
2428 if (gv)
2429 return GvHV(gv);
5c284bb0 2430 return NULL;
a0d0e21e
LW
2431}
2432
954c1994 2433/*
ccfc67b7
JH
2434=head1 CV Manipulation Functions
2435
780a5241
NC
2436=for apidoc p||get_cvn_flags
2437
2438Returns the CV of the specified Perl subroutine. C<flags> are passed to
2439C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2440exist then it will be declared (which has the same effect as saying
2441C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2442then NULL is returned.
2443
954c1994
GS
2444=for apidoc p||get_cv
2445
780a5241 2446Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2447
2448=cut
2449*/
2450
a0d0e21e 2451CV*
780a5241 2452Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2453{
780a5241 2454 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2455 /* XXX this is probably not what they think they're getting.
2456 * It has the same effect as "sub name;", i.e. just a forward
2457 * declaration! */
7918f24d
NC
2458
2459 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2460
780a5241 2461 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2462 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2463 return newSUB(start_subparse(FALSE, 0),
780a5241 2464 newSVOP(OP_CONST, 0, sv),
5f66b61c 2465 NULL, NULL);
780a5241 2466 }
a0d0e21e 2467 if (gv)
8ebc5c01 2468 return GvCVu(gv);
601f1833 2469 return NULL;
a0d0e21e
LW
2470}
2471
2c67934f
NC
2472/* Nothing in core calls this now, but we can't replace it with a macro and
2473 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2474CV*
2475Perl_get_cv(pTHX_ const char *name, I32 flags)
2476{
7918f24d
NC
2477 PERL_ARGS_ASSERT_GET_CV;
2478
780a5241
NC
2479 return get_cvn_flags(name, strlen(name), flags);
2480}
2481
79072805
LW
2482/* Be sure to refetch the stack pointer after calling these routines. */
2483
954c1994 2484/*
ccfc67b7
JH
2485
2486=head1 Callback Functions
2487
954c1994
GS
2488=for apidoc p||call_argv
2489
2490Performs a callback to the specified Perl sub. See L<perlcall>.
2491
2492=cut
2493*/
2494
a0d0e21e 2495I32
8f42b153 2496Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2497
8ac85365
NIS
2498 /* See G_* flags in cop.h */
2499 /* null terminated arg list */
8990e307 2500{
97aff369 2501 dVAR;
a0d0e21e 2502 dSP;
8990e307 2503
7918f24d
NC
2504 PERL_ARGS_ASSERT_CALL_ARGV;
2505
924508f0 2506 PUSHMARK(SP);
a0d0e21e 2507 if (argv) {
8990e307 2508 while (*argv) {
6e449a3a 2509 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2510 argv++;
2511 }
a0d0e21e 2512 PUTBACK;
8990e307 2513 }
864dbfa3 2514 return call_pv(sub_name, flags);
8990e307
LW
2515}
2516
954c1994
GS
2517/*
2518=for apidoc p||call_pv
2519
2520Performs a callback to the specified Perl sub. See L<perlcall>.
2521
2522=cut
2523*/
2524
a0d0e21e 2525I32
864dbfa3 2526Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2527 /* name of the subroutine */
2528 /* See G_* flags in cop.h */
a0d0e21e 2529{
7918f24d
NC
2530 PERL_ARGS_ASSERT_CALL_PV;
2531
0da0e728 2532 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2533}
2534
954c1994
GS
2535/*
2536=for apidoc p||call_method
2537
2538Performs a callback to the specified Perl method. The blessed object must
2539be on the stack. See L<perlcall>.
2540
2541=cut
2542*/
2543
a0d0e21e 2544I32
864dbfa3 2545Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2546 /* name of the subroutine */
2547 /* See G_* flags in cop.h */
a0d0e21e 2548{
46ca9bac 2549 STRLEN len;
7918f24d
NC
2550 PERL_ARGS_ASSERT_CALL_METHOD;
2551
46ca9bac 2552 len = strlen(methname);
2553
2554 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2555 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2556}
2557
2558/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2559/*
2560=for apidoc p||call_sv
2561
2562Performs a callback to the Perl sub whose name is in the SV. See
2563L<perlcall>.
2564
2565=cut
2566*/
2567
a0d0e21e 2568I32
001d637e 2569Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2570 /* See G_* flags in cop.h */
a0d0e21e 2571{
27da23d5 2572 dVAR; dSP;
a0d0e21e 2573 LOGOP myop; /* fake syntax tree node */
968b3946 2574 UNOP method_op;
aa689395 2575 I32 oldmark;
8ea43dc8 2576 VOL I32 retval = 0;
a0d0e21e 2577 I32 oldscope;
54310121 2578 bool oldcatch = CATCH_GET;
6224f72b 2579 int ret;
c4420975 2580 OP* const oldop = PL_op;
db36c5a1 2581 dJMPENV;
1e422769 2582
7918f24d
NC
2583 PERL_ARGS_ASSERT_CALL_SV;
2584
a0d0e21e
LW
2585 if (flags & G_DISCARD) {
2586 ENTER;
2587 SAVETMPS;
2588 }
2f8edad0
NC
2589 if (!(flags & G_WANT)) {
2590 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2591 */
2592 flags |= G_SCALAR;
2593 }
a0d0e21e 2594
aa689395 2595 Zero(&myop, 1, LOGOP);
5f66b61c 2596 myop.op_next = NULL;
f51d4af5 2597 if (!(flags & G_NOARGS))
aa689395 2598 myop.op_flags |= OPf_STACKED;
4f911530 2599 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2600 SAVEOP();
533c011a 2601 PL_op = (OP*)&myop;
aa689395 2602
3280af22
NIS
2603 EXTEND(PL_stack_sp, 1);
2604 *++PL_stack_sp = sv;
aa689395 2605 oldmark = TOPMARK;
3280af22 2606 oldscope = PL_scopestack_ix;
a0d0e21e 2607
3280af22 2608 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2609 /* Handle first BEGIN of -d. */
3280af22 2610 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2611 /* Try harder, since this may have been a sighandler, thus
2612 * curstash may be meaningless. */
ea726b52 2613 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2614 && !(flags & G_NODEBUG))
533c011a 2615 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2616
968b3946
GS
2617 if (flags & G_METHOD) {
2618 Zero(&method_op, 1, UNOP);
2619 method_op.op_next = PL_op;
2620 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2621 method_op.op_type = OP_METHOD;
968b3946 2622 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2623 myop.op_type = OP_ENTERSUB;
f39d0b86 2624 PL_op = (OP*)&method_op;
968b3946
GS
2625 }
2626
312caa8e 2627 if (!(flags & G_EVAL)) {
0cdb2077 2628 CATCH_SET(TRUE);
d6f07c05 2629 CALL_BODY_SUB((OP*)&myop);
312caa8e 2630 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2631 CATCH_SET(oldcatch);
312caa8e
CS
2632 }
2633 else {
d78bda3d 2634 myop.op_other = (OP*)&myop;
3280af22 2635 PL_markstack_ptr--;
edb2152a 2636 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2637 PL_markstack_ptr++;
a0d0e21e 2638
14dd3ad8 2639 JMPENV_PUSH(ret);
edb2152a 2640
6224f72b
GS
2641 switch (ret) {
2642 case 0:
14dd3ad8 2643 redo_body:
d6f07c05 2644 CALL_BODY_SUB((OP*)&myop);
312caa8e 2645 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2646 if (!(flags & G_KEEPERR)) {
ab69dbc2 2647 CLEAR_ERRSV();
8433848b 2648 }
a0d0e21e 2649 break;
6224f72b 2650 case 1:
f86702cc 2651 STATUS_ALL_FAILURE;
a0d0e21e 2652 /* FALL THROUGH */
6224f72b 2653 case 2:
a0d0e21e 2654 /* my_exit() was called */
3280af22 2655 PL_curstash = PL_defstash;
a0d0e21e 2656 FREETMPS;
14dd3ad8 2657 JMPENV_POP;
f86702cc 2658 my_exit_jump();
a0d0e21e 2659 /* NOTREACHED */
6224f72b 2660 case 3:
3280af22 2661 if (PL_restartop) {
febb3a6d 2662 PL_restartjmpenv = NULL;
533c011a 2663 PL_op = PL_restartop;
3280af22 2664 PL_restartop = 0;
312caa8e 2665 goto redo_body;
a0d0e21e 2666 }
3280af22 2667 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2668 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2669 retval = 0;
2670 else {
2671 retval = 1;
3280af22 2672 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2673 }
312caa8e 2674 break;
a0d0e21e 2675 }
a0d0e21e 2676
edb2152a
NC
2677 if (PL_scopestack_ix > oldscope)
2678 delete_eval_scope();
14dd3ad8 2679 JMPENV_POP;
a0d0e21e 2680 }
1e422769 2681
a0d0e21e 2682 if (flags & G_DISCARD) {
3280af22 2683 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2684 retval = 0;
2685 FREETMPS;
2686 LEAVE;
2687 }
533c011a 2688 PL_op = oldop;
a0d0e21e
LW
2689 return retval;
2690}
2691
6e72f9df 2692/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2693
954c1994
GS
2694/*
2695=for apidoc p||eval_sv
2696
be064c4a
DM
2697Tells Perl to C<eval> the string in the SV. It supports the same flags
2698as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2699
2700=cut
2701*/
2702
a0d0e21e 2703I32
864dbfa3 2704Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2705
8ac85365 2706 /* See G_* flags in cop.h */
a0d0e21e 2707{
97aff369 2708 dVAR;
924508f0 2709 dSP;
a0d0e21e 2710 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2711 VOL I32 oldmark = SP - PL_stack_base;
2712 VOL I32 retval = 0;
6224f72b 2713 int ret;
c4420975 2714 OP* const oldop = PL_op;
db36c5a1 2715 dJMPENV;
84902520 2716
7918f24d
NC
2717 PERL_ARGS_ASSERT_EVAL_SV;
2718
4633a7c4
LW
2719 if (flags & G_DISCARD) {
2720 ENTER;
2721 SAVETMPS;
2722 }
2723
462e5cf6 2724 SAVEOP();
533c011a
NIS
2725 PL_op = (OP*)&myop;
2726 Zero(PL_op, 1, UNOP);
3280af22
NIS
2727 EXTEND(PL_stack_sp, 1);
2728 *++PL_stack_sp = sv;
79072805 2729
4633a7c4
LW
2730 if (!(flags & G_NOARGS))
2731 myop.op_flags = OPf_STACKED;
5f66b61c 2732 myop.op_next = NULL;
6e72f9df 2733 myop.op_type = OP_ENTEREVAL;
4f911530 2734 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2735 if (flags & G_KEEPERR)
2736 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2737
dedbcade
DM
2738 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2739 * before a PUSHEVAL, which corrupts the stack after a croak */
2740 TAINT_PROPER("eval_sv()");
2741
14dd3ad8 2742 JMPENV_PUSH(ret);
6224f72b
GS
2743 switch (ret) {
2744 case 0:
14dd3ad8 2745 redo_body:
2ba65d5f
DM
2746 if (PL_op == (OP*)(&myop)) {
2747 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2748 if (!PL_op)
2749 goto fail; /* failed in compilation */
2750 }
4aca2f62 2751 CALLRUNOPS(aTHX);
312caa8e 2752 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2753 if (!(flags & G_KEEPERR)) {
ab69dbc2 2754 CLEAR_ERRSV();
8433848b 2755 }
4633a7c4 2756 break;
6224f72b 2757 case 1:
f86702cc 2758 STATUS_ALL_FAILURE;
4633a7c4 2759 /* FALL THROUGH */
6224f72b 2760 case 2:
4633a7c4 2761 /* my_exit() was called */
3280af22 2762 PL_curstash = PL_defstash;
4633a7c4 2763 FREETMPS;
14dd3ad8 2764 JMPENV_POP;
f86702cc 2765 my_exit_jump();
4633a7c4 2766 /* NOTREACHED */
6224f72b 2767 case 3:
3280af22 2768 if (PL_restartop) {
febb3a6d 2769 PL_restartjmpenv = NULL;
533c011a 2770 PL_op = PL_restartop;
3280af22 2771 PL_restartop = 0;
312caa8e 2772 goto redo_body;
4633a7c4 2773 }
4aca2f62 2774 fail:
3280af22 2775 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2776 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2777 retval = 0;
2778 else {
2779 retval = 1;
3280af22 2780 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2781 }
312caa8e 2782 break;
4633a7c4
LW
2783 }
2784
14dd3ad8 2785 JMPENV_POP;
4633a7c4 2786 if (flags & G_DISCARD) {
3280af22 2787 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2788 retval = 0;
2789 FREETMPS;
2790 LEAVE;
2791 }
533c011a 2792 PL_op = oldop;
4633a7c4
LW
2793 return retval;
2794}
2795
954c1994
GS
2796/*
2797=for apidoc p||eval_pv
2798
2799Tells Perl to C<eval> the given string and return an SV* result.
2800
2801=cut
2802*/
2803
137443ea 2804SV*
864dbfa3 2805Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2806{
97aff369 2807 dVAR;
137443ea
PP
2808 dSP;
2809 SV* sv = newSVpv(p, 0);
2810
7918f24d
NC
2811 PERL_ARGS_ASSERT_EVAL_PV;
2812
864dbfa3 2813 eval_sv(sv, G_SCALAR);
137443ea
PP
2814 SvREFCNT_dec(sv);
2815
2816 SPAGAIN;
2817 sv = POPs;
2818 PUTBACK;
2819
2d8e6c8d 2820 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2821 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2822 }
137443ea
PP
2823
2824 return sv;
2825}
2826
4633a7c4
LW
2827/* Require a module. */
2828
954c1994 2829/*
ccfc67b7
JH
2830=head1 Embedding Functions
2831
954c1994
GS
2832=for apidoc p||require_pv
2833
7d3fb230
BS
2834Tells Perl to C<require> the file named by the string argument. It is
2835analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2836implemented that way; consider using load_module instead.
954c1994 2837
7d3fb230 2838=cut */
954c1994 2839
4633a7c4 2840void
864dbfa3 2841Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2842{
97aff369 2843 dVAR;
d3acc0f7 2844 dSP;
97aff369 2845 SV* sv;
7918f24d
NC
2846
2847 PERL_ARGS_ASSERT_REQUIRE_PV;
2848
e788e7d3 2849 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2850 PUTBACK;
be41e5d9
NC
2851 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2852 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2853 SPAGAIN;
2854 POPSTACK;
79072805
LW
2855}
2856
76e3520e 2857STATIC void
e1ec3a88 2858S_usage(pTHX_ const char *name) /* XXX move this out into a module ? */
4633a7c4 2859{
ab821d7f 2860 /* This message really ought to be max 23 lines.
75c72d73 2861 * Removed -h because the user already knows that option. Others? */
fb73857a 2862
1566c39d
NC
2863 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2864 minimum of 509 character string literals. */
27da23d5 2865 static const char * const usage_msg[] = {
1566c39d
NC
2866" -0[octal] specify record separator (\\0, if no argument)\n"
2867" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2868" -C[number/list] enables the listed Unicode features\n"
2869" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2870" -d[:debugger] run program under debugger\n"
2871" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2872" -e program one line of program (several -e's allowed, omit programfile)\n"
2873" -E program like -e, but enables all optional features\n"
2874" -f don't do $sitelib/sitecustomize.pl at startup\n"
2875" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2876" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2877" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2878" -l[octal] enable line ending processing, specifies line terminator\n"
2879" -[mM][-]module execute \"use/no module...\" before executing program\n"
2880" -n assume \"while (<>) { ... }\" loop around program\n"
2881" -p assume loop like -n but print line also, like sed\n"
2882" -s enable rudimentary parsing for switches after programfile\n"
2883" -S look for programfile using PATH environment variable\n",
2884" -t enable tainting warnings\n"
2885" -T enable tainting checks\n"
2886" -u dump core after parsing program\n"
2887" -U allow unsafe operations\n"
2888" -v print version, patchlevel and license\n"
2889" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2890" -w enable many useful warnings\n"
1566c39d
NC
2891" -W enable all warnings\n"
2892" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2893" -X disable all warnings\n"
2894" \n"
2895"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2896NULL
2897};
27da23d5 2898 const char * const *p = usage_msg;
1566c39d 2899 PerlIO *out = PerlIO_stdout();
fb73857a 2900
7918f24d
NC
2901 PERL_ARGS_ASSERT_USAGE;
2902
1566c39d
NC
2903 PerlIO_printf(out,
2904 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b0e47665 2905 name);
fb73857a 2906 while (*p)
1566c39d 2907 PerlIO_puts(out, *p++);
4633a7c4
LW
2908}
2909
b4ab917c
DM
2910/* convert a string of -D options (or digits) into an int.
2911 * sets *s to point to the char after the options */
2912
2913#ifdef DEBUGGING
2914int
e1ec3a88 2915Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2916{
27da23d5 2917 static const char * const usage_msgd[] = {
651b8f1a
NC
2918 " Debugging flag values: (see also -d)\n"
2919 " p Tokenizing and parsing (with v, displays parse stack)\n"
2920 " s Stack snapshots (with v, displays all stacks)\n"
2921 " l Context (loop) stack processing\n"
2922 " t Trace execution\n"
2923 " o Method and overloading resolution\n",
2924 " c String/numeric conversions\n"
2925 " P Print profiling info, source file input state\n"
2926 " m Memory and SV allocation\n"
2927 " f Format processing\n"
2928 " r Regular expression parsing and execution\n"
2929 " x Syntax tree dump\n",
2930 " u Tainting checks\n"
2931 " H Hash dump -- usurps values()\n"
2932 " X Scratchpad allocation\n"
2933 " D Cleaning up\n"
2934 " T Tokenising\n"
2935 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2936 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2937 " v Verbose: use in conjunction with other flags\n"
2938 " C Copy On Write\n"
2939 " A Consistency checks on internal structures\n"
2940 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2941 " M trace smart match resolution\n"
2942 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2943 NULL
2944 };
b4ab917c 2945 int i = 0;
7918f24d
NC
2946
2947 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
2948
b4ab917c
DM
2949 if (isALPHA(**s)) {
2950 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 2951 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
2952
2953 for (; isALNUM(**s); (*s)++) {
c4420975 2954 const char * const d = strchr(debopts,**s);
b4ab917c
DM
2955 if (d)
2956 i |= 1 << (d - debopts);
2957 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
2958 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2959 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
2960 }
2961 }
e6e64d9b 2962 else if (isDIGIT(**s)) {
b4ab917c
DM
2963 i = atoi(*s);
2964 for (; isALNUM(**s); (*s)++) ;
2965 }
ddcf8bc1 2966 else if (givehelp) {
06e869a4 2967 const char *const *p = usage_msgd;
651b8f1a 2968 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 2969 }
b4ab917c
DM
2970# ifdef EBCDIC
2971 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
2972 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
2973 "-Dp not implemented on this platform\n");
2974# endif
2975 return i;
2976}
2977#endif
2978
79072805
LW
2979/* This routine handles any switches that can be given during run */
2980
c7030b81
NC
2981const char *
2982Perl_moreswitches(pTHX_ const char *s)
79072805 2983{
27da23d5 2984 dVAR;
84c133a0 2985 UV rschar;
0544e6df 2986 const char option = *s; /* used to remember option in -m/-M code */
79072805 2987
7918f24d
NC
2988 PERL_ARGS_ASSERT_MORESWITCHES;
2989
79072805
LW
2990 switch (*s) {
2991 case '0':
a863c7d1 2992 {
f2095865 2993 I32 flags = 0;
a3b680e6 2994 STRLEN numlen;
f2095865
JH
2995
2996 SvREFCNT_dec(PL_rs);
2997 if (s[1] == 'x' && s[2]) {
a3b680e6 2998 const char *e = s+=2;
f2095865
JH
2999 U8 *tmps;
3000
a3b680e6
AL
3001 while (*e)
3002 e++;
f2095865
JH
3003 numlen = e - s;
3004 flags = PERL_SCAN_SILENT_ILLDIGIT;
3005 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3006 if (s + numlen < e) {
3007 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3008 numlen = 0;
3009 s--;
3010 }
396482e1 3011 PL_rs = newSVpvs("");
c5661c80 3012 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3013 tmps = (U8*)SvPVX(PL_rs);
3014 uvchr_to_utf8(tmps, rschar);
3015 SvCUR_set(PL_rs, UNISKIP(rschar));
3016 SvUTF8_on(PL_rs);
3017 }
3018 else {
3019 numlen = 4;
3020 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3021 if (rschar & ~((U8)~0))
3022 PL_rs = &PL_sv_undef;
3023 else if (!rschar && numlen >= 2)
396482e1 3024 PL_rs = newSVpvs("");
f2095865
JH
3025 else {
3026 char ch = (char)rschar;
3027 PL_rs = newSVpvn(&ch, 1);
3028 }
3029 }
64ace3f8 3030 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3031 return s + numlen;
a863c7d1 3032 }
46487f74 3033 case 'C':
a05d7ebb 3034 s++;
dd374669 3035 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3036 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3037 PL_utf8cache = -1;
46487f74 3038 return s;
2304df62 3039 case 'F':
3280af22 3040 PL_minus_F = TRUE;
ebce5377
RGS
3041 PL_splitstr = ++s;
3042 while (*s && !isSPACE(*s)) ++s;
e49e380e 3043 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3044 return s;
79072805 3045 case 'a':
3280af22 3046 PL_minus_a = TRUE;
79072805
LW
3047 s++;
3048 return s;
3049 case 'c':
3280af22 3050 PL_minus_c = TRUE;
79072805
LW
3051 s++;
3052 return s;
3053 case 'd':
f20b2998 3054 forbid_setid('d', FALSE);
4633a7c4 3055 s++;
2cbb2ee1
RGS
3056
3057 /* -dt indicates to the debugger that threads will be used */
3058 if (*s == 't' && !isALNUM(s[1])) {
3059 ++s;
3060 my_setenv("PERL5DB_THREADED", "1");
3061 }
3062
70c94a19
RR
3063 /* The following permits -d:Mod to accepts arguments following an =
3064 in the fashion that -MSome::Mod does. */
3065 if (*s == ':' || *s == '=') {
b19934fb
NC
3066 const char *start;
3067 const char *end;
3068 SV *sv;
3069
3070 if (*++s == '-') {
3071 ++s;
3072 sv = newSVpvs("no Devel::");
3073 } else {
3074 sv = newSVpvs("use Devel::");
3075 }
3076
3077 start = s;
3078 end = s + strlen(s);
f85893a1 3079
b19934fb 3080 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3081 while(isALNUM(*s) || *s==':') ++s;
3082 if (*s != '=')
f85893a1 3083 sv_catpvn(sv, start, end - start);
70c94a19
RR
3084 else {
3085 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3086 /* Don't use NUL as q// delimiter here, this string goes in the
3087 * environment. */
3088 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3089 }
f85893a1 3090 s = end;
184f32ec 3091 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3092 SvREFCNT_dec(sv);
4633a7c4 3093 }
ed094faf 3094 if (!PL_perldb) {
3280af22 3095 PL_perldb = PERLDB_ALL;
a0d0e21e 3096 init_debugger();
ed094faf 3097 }
79072805
LW
3098 return s;
3099 case 'D':
0453d815 3100 {
79072805 3101#ifdef DEBUGGING
f20b2998 3102 forbid_setid('D', FALSE);
b4ab917c 3103 s++;
dd374669 3104 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3105#else /* !DEBUGGING */
0453d815 3106 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3107 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3108 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3109 for (s++; isALNUM(*s); s++) ;
79072805 3110#endif
79072805 3111 return s;
0453d815 3112 }
4633a7c4 3113 case 'h':
ac27b0f5 3114 usage(PL_origargv[0]);
7ca617d0 3115 my_exit(0);
79072805 3116 case 'i':
43c5f42d 3117 Safefree(PL_inplace);
c030f24b
GH
3118#if defined(__CYGWIN__) /* do backup extension automagically */
3119 if (*(s+1) == '\0') {
c86a4f2e 3120 PL_inplace = savepvs(".bak");
c030f24b
GH
3121 return s+1;
3122 }
3123#endif /* __CYGWIN__ */
5ef5d758 3124 {
d4c19fe8 3125 const char * const start = ++s;
5ef5d758
NC
3126 while (*s && !isSPACE(*s))
3127 ++s;
3128
3129 PL_inplace = savepvn(start, s - start);
3130 }
7b8d334a 3131 if (*s) {
5ef5d758 3132 ++s;
7b8d334a 3133 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3134 s++;
7b8d334a 3135 }
fb73857a 3136 return s;
4e49a025 3137 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3138 forbid_setid('I', FALSE);
fb73857a
PP
3139 ++s;
3140 while (*s && isSPACE(*s))
3141 ++s;
3142 if (*s) {
c7030b81 3143 const char *e, *p;
0df16ed7
GS
3144 p = s;
3145 /* ignore trailing spaces (possibly followed by other switches) */
3146 do {
3147 for (e = p; *e && !isSPACE(*e); e++) ;
3148 p = e;
3149 while (isSPACE(*p))
3150 p++;
3151 } while (*p && *p != '-');
55b4bc1c 3152 incpush(s, e-s,
e28f3139 3153 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3154 s = p;
3155 if (*s == '-')
3156 s++;
79072805
LW
3157 }
3158 else
a67e862a 3159 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3160 return s;
79072805 3161 case 'l':
3280af22 3162 PL_minus_l = TRUE;
79072805 3163 s++;
7889fe52
NIS
3164 if (PL_ors_sv) {
3165 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3166 PL_ors_sv = NULL;
7889fe52 3167 }
79072805 3168 if (isDIGIT(*s)) {
53305cf1 3169 I32 flags = 0;
a3b680e6 3170 STRLEN numlen;
396482e1 3171 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3172 numlen = 3 + (*s == '0');
3173 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3174 s += numlen;
3175 }
3176 else {
8bfdd7d9 3177 if (RsPARA(PL_rs)) {
396482e1 3178 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3179 }
3180 else {
8bfdd7d9 3181 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3182 }
79072805
LW
3183 }
3184 return s;
1a30305b 3185 case 'M':
f20b2998 3186 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3187 /* FALL THROUGH */
3188 case 'm':
f20b2998 3189 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3190 if (*++s) {
c7030b81 3191 const char *start;
b64cb68c 3192 const char *end;
11343788 3193 SV *sv;
e1ec3a88 3194 const char *use = "use ";
0544e6df 3195 bool colon = FALSE;
a5f75d66 3196 /* -M-foo == 'no foo' */
d0043bd1
NC
3197 /* Leading space on " no " is deliberate, to make both
3198 possibilities the same length. */
3199 if (*s == '-') { use = " no "; ++s; }
3200 sv = newSVpvn(use,4);
a5f75d66 3201 start = s;
1a30305b 3202 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3203 while(isALNUM(*s) || *s==':') {
3204 if( *s++ == ':' ) {
3205 if( *s == ':' )
3206 s++;
3207 else
3208 colon = TRUE;
3209 }
3210 }
3211 if (s == start)
3212 Perl_croak(aTHX_ "Module name required with -%c option",
3213 option);
3214 if (colon)
3215 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3216 "contains single ':'",
63da6837 3217 (int)(s - start), start, option);
b64cb68c 3218 end = s + strlen(s);
c07a80fd 3219 if (*s != '=') {
b64cb68c 3220 sv_catpvn(sv, start, end - start);
0544e6df 3221 if (option == 'm') {
c07a80fd 3222 if (*s != '\0')
cea2e8a9 3223 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3224 sv_catpvs( sv, " ()");
c07a80fd
PP
3225 }
3226 } else {
11343788 3227 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3228 /* Use NUL as q''-delimiter. */
3229 sv_catpvs(sv, " split(/,/,q\0");
3230 ++s;
3231 sv_catpvn(sv, s, end - s);
396482e1 3232 sv_catpvs(sv, "\0)");
c07a80fd 3233 }
b64cb68c 3234 s = end;
29a861e7 3235 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3236 }
3237 else
0544e6df 3238 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3239 return s;
79072805 3240 case 'n':
3280af22 3241 PL_minus_n = TRUE;
79072805
LW
3242 s++;
3243 return s;
3244 case 'p':
3280af22 3245 PL_minus_p = TRUE;
79072805
LW
3246 s++;
3247 return s;
3248 case 's':
f20b2998 3249 forbid_setid('s', FALSE);
3280af22 3250 PL_doswitches = TRUE;
79072805
LW
3251 s++;
3252 return s;
6537fe72
MS
3253 case 't':
3254 if (!PL_tainting)
22f7c9c9 3255 TOO_LATE_FOR('t');
6537fe72
MS
3256 s++;
3257 return s;
463ee0b2 3258 case 'T':
3280af22 3259 if (!PL_tainting)
22f7c9c9 3260 TOO_LATE_FOR('T');
463ee0b2
LW
3261 s++;
3262 return s;
79072805 3263 case 'u':
3280af22 3264 PL_do_undump = TRUE;
79072805
LW
3265 s++;
3266 return s;
3267 case 'U':
3280af22 3268 PL_unsafe = TRUE;
79072805
LW
3269 s++;
3270 return s;
3271 case 'v':
d7aa5382 3272 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3273 upg_version(PL_patchlevel, TRUE);
8e9464f1 3274#if !defined(DGUX)
46807d8e
YO
3275 {
3276 SV* level= vstringify(PL_patchlevel);
3277#ifdef PERL_PATCHNUM
23d483e2
NC
3278# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3279 SV *num = newSVpvs(PERL_PATCHNUM "*");
3280# else
3281 SV *num = newSVpvs(PERL_PATCHNUM);
3282# endif
46807d8e
YO
3283
3284 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3285 SvREFCNT_dec(level);
3286 level= num;
3287 } else {
d0a9311f 3288 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3289 SvREFCNT_dec(num);
3290 }
3291 #endif
3292 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3293 "\nThis is perl " STRINGIFY(PERL_REVISION)
3294 ", version " STRINGIFY(PERL_VERSION)
3295 ", subversion " STRINGIFY(PERL_SUBVERSION)
3296 " (%"SVf") built for " ARCHNAME, level
3297 );
46807d8e
YO
3298 SvREFCNT_dec(level);
3299 }
8e9464f1
JH
3300#else /* DGUX */
3301/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3302 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3303 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3304 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3305 PerlIO_printf(PerlIO_stdout(),
3306 Perl_form(aTHX_ " built under %s at %s %s\n",
3307 OSNAME, __DATE__, __TIME__));
3308 PerlIO_printf(PerlIO_stdout(),
3309 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3310 OSVERS));
8e9464f1 3311#endif /* !DGUX */
fb73857a
PP
3312#if defined(LOCAL_PATCH_COUNT)
3313 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3314 PerlIO_printf(PerlIO_stdout(),
3315 "\n(with %d registered patch%s, "
3316 "see perl -V for more detail)",
bb7a0f54 3317 LOCAL_PATCH_COUNT,
b0e47665 3318 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3319#endif
1a30305b 3320
b0e47665 3321 PerlIO_printf(PerlIO_stdout(),
010d7370 3322 "\n\nCopyright 1987-2011, Larry Wall\n");
79072805 3323#ifdef MSDOS
b0e47665
GS
3324 PerlIO_printf(PerlIO_stdout(),
3325 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3326#endif
3327#ifdef DJGPP
b0e47665
GS
3328 PerlIO_printf(PerlIO_stdout(),
3329 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3330 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3331#endif
79072805 3332#ifdef OS2
b0e47665
GS
3333 PerlIO_printf(PerlIO_stdout(),
3334 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3335 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3336#endif
79072805 3337#ifdef atarist
b0e47665
GS
3338 PerlIO_printf(PerlIO_stdout(),
3339 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3340#endif
a3f9223b 3341#ifdef __BEOS__
b0e47665
GS
3342 PerlIO_printf(PerlIO_stdout(),
3343 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3344#endif
1d84e8df 3345#ifdef MPE
b0e47665 3346 PerlIO_printf(PerlIO_stdout(),
e583a879 3347 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3348#endif
9d116dd7 3349#ifdef OEMVS
b0e47665
GS
3350 PerlIO_printf(PerlIO_stdout(),
3351 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3352#endif
495c5fdc 3353#ifdef __VOS__
b0e47665 3354 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3355 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3356#endif
092bebab 3357#ifdef __OPEN_VM
b0e47665
GS
3358 PerlIO_printf(PerlIO_stdout(),
3359 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3360#endif
a1a0e61e 3361#ifdef POSIX_BC
b0e47665
GS
3362 PerlIO_printf(PerlIO_stdout(),
3363 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3364#endif
f83d2536 3365#ifdef EPOC
b0e47665 3366 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3367 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3368#endif
e1caacb4 3369#ifdef UNDER_CE
b475b3e6
JH
3370 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3371 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3372 wce_hitreturn();
3373#endif
a0fd4948 3374#ifdef __SYMBIAN32__
27da23d5
JH
3375 PerlIO_printf(PerlIO_stdout(),
3376 "Symbian port by Nokia, 2004-2005\n");
3377#endif
baed7233
DL
3378#ifdef BINARY_BUILD_NOTICE
3379 BINARY_BUILD_NOTICE;
3380#endif
b0e47665
GS
3381 PerlIO_printf(PerlIO_stdout(),
3382 "\n\
79072805 3383Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3384GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3385Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3386this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3387Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3388 my_exit(0);
79072805 3389 case 'w':
b2e5e6ba 3390 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
ac27b0f5 3391 PL_dowarn |= G_WARN_ON;
b2e5e6ba 3392 }
599cee73
PM
3393 s++;
3394 return s;
3395 case 'W':
ac27b0f5 3396 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
317ea90d 3397 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3398 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3399 PL_compiling.cop_warnings = pWARN_ALL ;
599cee73
PM
3400 s++;
3401 return s;
3402 case 'X':
ac27b0f5 3403 PL_dowarn = G_WARN_ALL_OFF;
317ea90d 3404 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 3405 PerlMemShared_free(PL_compiling.cop_warnings);
d3a7d8c7 3406 PL_compiling.cop_warnings = pWARN_NONE ;
79072805
LW
3407 s++;
3408 return s;
a0d0e21e 3409 case '*':
79072805 3410 case ' ':
d3133c89
NC
3411 while( *s == ' ' )
3412 ++s;
3413 if (s[0] == '-') /* Additional switches on #! line. */
3414 return s+1;
79072805 3415 break;
a0d0e21e 3416 case '-':
79072805 3417 case 0:
51882d45 3418#if defined(WIN32) || !defined(PERL_STRICT_CR)
a868473f
NIS
3419 case '\r':
3420#endif
79072805
LW
3421 case '\n':
3422 case '\t':
3423 break;
aa689395
PP
3424#ifdef ALTERNATE_SHEBANG
3425 case 'S': /* OS/2 needs -S on "extproc" line. */
3426 break;
3427#endif
79072805 3428 default:
cea2e8a9 3429 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
79072805 3430 }
bd61b366 3431 return NULL;
79072805
LW
3432}
3433
3434/* compliments of Tom Christiansen */
3435
3436/* unexec() can be found in the Gnu emacs distribution */
ee580363 3437/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3438
3439void
864dbfa3 3440Perl_my_unexec(pTHX)
79072805 3441{
b37c2d43 3442 PERL_UNUSED_CONTEXT;
79072805 3443#ifdef UNEXEC
b37c2d43
AL
3444 SV * prog = newSVpv(BIN_EXP, 0);
3445 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3446 int status = 1;
79072805
LW
3447 extern int etext;
3448
396482e1 3449 sv_catpvs(prog, "/perl");
396482e1 3450 sv_catpvs(file, ".perldump");
79072805 3451
ee580363
GS
3452 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3453 /* unexec prints msg to stderr in case of failure */
6ad3d225 3454 PerlProc_exit(status);
79072805 3455#else
a5f75d66
AD
3456# ifdef VMS
3457# include <lib$routines.h>
3458 lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
84d78eb7
YO
3459# elif defined(WIN32) || defined(__CYGWIN__)
3460 Perl_croak(aTHX_ "dump is not supported");
aa689395 3461# else
79072805 3462 ABORT(); /* for use with undump */
aa689395 3463# endif
a5f75d66 3464#endif
79072805
LW
3465}
3466
cb68f92d
GS
3467/* initialize curinterp */
3468STATIC void
cea2e8a9 3469S_init_interp(pTHX)
cb68f92d 3470{
97aff369 3471 dVAR;
acfe0abc
GS
3472#ifdef MULTIPLICITY
3473# define PERLVAR(var,type)
3474# define PERLVARA(var,n,type)
3475# if defined(PERL_IMPLICIT_CONTEXT)
b7f7fff6
NC
3476# define PERLVARI(var,type,init) aTHX->var = init;
3477# define PERLVARIC(var,type,init) aTHX->var = init;
3967c732 3478# else
acfe0abc
GS
3479# define PERLVARI(var,type,init) PERL_GET_INTERP->var = init;
3480# define PERLVARIC(var,type,init) PERL_GET_INTERP->var = init;
066ef5b5 3481# endif
acfe0abc 3482# include "intrpvar.h"
acfe0abc
GS
3483# undef PERLVAR
3484# undef PERLVARA
3485# undef PERLVARI
3486# undef PERLVARIC
3487#else
3488# define PERLVAR(var,type)
3489# define PERLVARA(var,n,type)
3490# define PERLVARI(var,type,init) PL_##var = init;
3491# define PERLVARIC(var,type,init) PL_##var = init;
3492# include "intrpvar.h"
acfe0abc
GS
3493# undef PERLVAR
3494# undef PERLVARA
3495# undef PERLVARI
3496# undef PERLVARIC
cb68f92d
GS
3497#endif
3498
46ab3289
NC
3499 /* As these are inside a structure, PERLVARI isn't capable of initialising
3500 them */
6c3f0a89
NC
3501 PL_reg_oldcurpm = PL_reg_curpm = NULL;
3502 PL_reg_poscache = PL_reg_starttry = NULL;
cb68f92d
GS
3503}
3504