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Remove gete?[ug]id caching
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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
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
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8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
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11 */
12
a0d0e21e 13/*
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14 * A ship then new they built for him
15 * of mithril and of elven-glass
cdad3b53 16 * --from Bilbo's song of Eärendil
4ac71550
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17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
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21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
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25 */
26
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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"
011f1a1a
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39#endif
40
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41#ifdef USE_KERN_PROC_PATHNAME
42# include <sys/sysctl.h>
43#endif
44
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45#ifdef USE_NSGETEXECUTABLEPATH
46# include <mach-o/dyld.h>
47#endif
48
2aa47728 49#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
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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 */
cc69b689
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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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AL
87#define CALL_BODY_SUB(myop) \
88 if (PL_op == (myop)) \
139d0ce6 89 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
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AL
90 if (PL_op) \
91 CALLRUNOPS(aTHX);
92
93#define CALL_LIST_BODY(cv) \
94 PUSHMARK(PL_stack_sp); \
9a8aa25b 95 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 96
e6827a76 97static void
daa7d858 98S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 99{
27da23d5 100 dVAR;
e6827a76
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101 if (!PL_curinterp) {
102 PERL_SET_INTERP(my_perl);
3db8f154 103#if defined(USE_ITHREADS)
e6827a76
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104 INIT_THREADS;
105 ALLOC_THREAD_KEY;
106 PERL_SET_THX(my_perl);
107 OP_REFCNT_INIT;
e8570548 108 OP_CHECK_MUTEX_INIT;
71ad1b0c 109 HINTS_REFCNT_INIT;
e6827a76 110 MUTEX_INIT(&PL_dollarzero_mutex);
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111 MUTEX_INIT(&PL_my_ctx_mutex);
112# endif
e6827a76 113 }
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114#if defined(USE_ITHREADS)
115 else
116#else
117 /* This always happens for non-ithreads */
118#endif
119 {
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120 PERL_SET_THX(my_perl);
121 }
122}
06d86050 123
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124
125/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
126
127void
128Perl_sys_init(int* argc, char*** argv)
129{
4fc0badb 130 dVAR;
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131
132 PERL_ARGS_ASSERT_SYS_INIT;
133
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134 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
135 PERL_UNUSED_ARG(argv);
136 PERL_SYS_INIT_BODY(argc, argv);
137}
138
139void
140Perl_sys_init3(int* argc, char*** argv, char*** env)
141{
4fc0badb 142 dVAR;
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143
144 PERL_ARGS_ASSERT_SYS_INIT3;
145
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146 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
147 PERL_UNUSED_ARG(argv);
148 PERL_UNUSED_ARG(env);
149 PERL_SYS_INIT3_BODY(argc, argv, env);
150}
151
152void
d0820ef1 153Perl_sys_term()
cbec8ebe 154{
4fc0badb 155 dVAR;
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156 if (!PL_veto_cleanup) {
157 PERL_SYS_TERM_BODY();
158 }
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159}
160
161
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162#ifdef PERL_IMPLICIT_SYS
163PerlInterpreter *
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164perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
165 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
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166 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
167 struct IPerlDir* ipD, struct IPerlSock* ipS,
168 struct IPerlProc* ipP)
169{
170 PerlInterpreter *my_perl;
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171
172 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
173
9f653bb5 174 /* Newx() needs interpreter, so call malloc() instead */
32e30700 175 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 176 S_init_tls_and_interp(my_perl);
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177 Zero(my_perl, 1, PerlInterpreter);
178 PL_Mem = ipM;
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179 PL_MemShared = ipMS;
180 PL_MemParse = ipMP;
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181 PL_Env = ipE;
182 PL_StdIO = ipStd;
183 PL_LIO = ipLIO;
184 PL_Dir = ipD;
185 PL_Sock = ipS;
186 PL_Proc = ipP;
7cb608b5 187 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 188
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189 return my_perl;
190}
191#else
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192
193/*
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194=head1 Embedding Functions
195
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196=for apidoc perl_alloc
197
198Allocates a new Perl interpreter. See L<perlembed>.
199
200=cut
201*/
202
93a17b20 203PerlInterpreter *
cea2e8a9 204perl_alloc(void)
79072805 205{
cea2e8a9 206 PerlInterpreter *my_perl;
79072805 207
9f653bb5 208 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 209 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 210
e6827a76 211 S_init_tls_and_interp(my_perl);
7cb608b5 212#ifndef PERL_TRACK_MEMPOOL
07409e01 213 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
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214#else
215 Zero(my_perl, 1, PerlInterpreter);
216 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
217 return my_perl;
218#endif
79072805 219}
32e30700 220#endif /* PERL_IMPLICIT_SYS */
79072805 221
954c1994
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222/*
223=for apidoc perl_construct
224
225Initializes a new Perl interpreter. See L<perlembed>.
226
227=cut
228*/
229
79072805 230void
0cb96387 231perl_construct(pTHXx)
79072805 232{
27da23d5 233 dVAR;
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234
235 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
236
8990e307 237#ifdef MULTIPLICITY
54aff467 238 init_interp();
ac27b0f5 239 PL_perl_destruct_level = 1;
54aff467 240#else
7918f24d 241 PERL_UNUSED_ARG(my_perl);
54aff467
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242 if (PL_perl_destruct_level > 0)
243 init_interp();
244#endif
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245 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
246
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247 /* set read-only and try to insure than we wont see REFCNT==0
248 very often */
249
250 SvREADONLY_on(&PL_sv_undef);
251 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
252
253 sv_setpv(&PL_sv_no,PL_No);
254 /* value lookup in void context - happens to have the side effect
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255 of caching the numeric forms. However, as &PL_sv_no doesn't contain
256 a string that is a valid numer, we have to turn the public flags by
257 hand: */
34caed6d 258 SvNV(&PL_sv_no);
c1939273 259 SvIV(&PL_sv_no);
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260 SvIOK_on(&PL_sv_no);
261 SvNOK_on(&PL_sv_no);
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262 SvREADONLY_on(&PL_sv_no);
263 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
264
265 sv_setpv(&PL_sv_yes,PL_Yes);
34caed6d 266 SvNV(&PL_sv_yes);
c1939273 267 SvIV(&PL_sv_yes);
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DM
268 SvREADONLY_on(&PL_sv_yes);
269 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
270
271 SvREADONLY_on(&PL_sv_placeholder);
272 SvREFCNT(&PL_sv_placeholder) = (~(U32)0)/2;
273
274 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 275#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 276 PL_pidstatus = newHV();
ca0c25f6 277#endif
79072805 278
396482e1 279 PL_rs = newSVpvs("\n");
dc92893f 280
cea2e8a9 281 init_stacks();
79072805 282
748a9306 283 init_ids();
a5f75d66 284
312caa8e 285 JMPENV_BOOTSTRAP;
f86702cc
PP
286 STATUS_ALL_SUCCESS;
287
0672f40e 288 init_i18nl10n(1);
36477c24 289 SET_NUMERIC_STANDARD();
0b5b802d 290
ab821d7f 291#if defined(LOCAL_PATCH_COUNT)
3280af22 292 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
293#endif
294
52853b95
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295#ifdef HAVE_INTERP_INTERN
296 sys_intern_init();
297#endif
298
3a1ee7e8 299 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 300
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301 PL_fdpid = newAV(); /* for remembering popen pids by fd */
302 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 303 PL_errors = newSVpvs("");
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304 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
305 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
306 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 307#ifdef USE_ITHREADS
402d2eb1
NC
308 /* First entry is a list of empty elements. It needs to be initialised
309 else all hell breaks loose in S_find_uninit_var(). */
310 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 311 PL_regex_pad = AvARRAY(PL_regex_padav);
1fcf4c12 312#endif
e5dd39fc 313#ifdef USE_REENTRANT_API
59bd0823 314 Perl_reentrant_init(aTHX);
e5dd39fc 315#endif
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AB
316
317 /* Note that strtab is a rather special HV. Assumptions are made
318 about not iterating on it, and not adding tie magic to it.
319 It is properly deallocated in perl_destruct() */
320 PL_strtab = newHV();
321
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AB
322 HvSHAREKEYS_off(PL_strtab); /* mandatory */
323 hv_ksplit(PL_strtab, 512);
324
0631ea03
AB
325#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
326 _dyld_lookup_and_bind
327 ("__environ", (unsigned long *) &environ_pointer, NULL);
328#endif /* environ */
329
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JH
330#ifndef PERL_MICRO
331# ifdef USE_ENVIRON_ARRAY
0631ea03 332 PL_origenviron = environ;
2f42fcb0 333# endif
0631ea03
AB
334#endif
335
5311654c 336 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 337 * available or if the sysconf() fails, use the HZ.
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JH
338 * BeOS has those, but returns the wrong value.
339 * The HZ if not originally defined has been by now
340 * been defined as CLK_TCK, if available. */
dbc1d986 341#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK) && !defined(__BEOS__)
5311654c
JH
342 PL_clocktick = sysconf(_SC_CLK_TCK);
343 if (PL_clocktick <= 0)
344#endif
345 PL_clocktick = HZ;
346
081fc587
AB
347 PL_stashcache = newHV();
348
e8e3635e 349 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 350 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 351
27da23d5
JH
352#ifdef HAS_MMAP
353 if (!PL_mmap_page_size) {
354#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
355 {
356 SETERRNO(0, SS_NORMAL);
357# ifdef _SC_PAGESIZE
358 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
359# else
360 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
361# endif
362 if ((long) PL_mmap_page_size < 0) {
363 if (errno) {
44f8325f 364 SV * const error = ERRSV;
d4c19fe8 365 SvUPGRADE(error, SVt_PV);
0510663f 366 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
367 }
368 else
369 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
370 }
371 }
372#else
373# ifdef HAS_GETPAGESIZE
374 PL_mmap_page_size = getpagesize();
375# else
376# if defined(I_SYS_PARAM) && defined(PAGESIZE)
377 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
378# endif
379# endif
380#endif
381 if (PL_mmap_page_size <= 0)
382 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
383 (IV) PL_mmap_page_size);
384 }
385#endif /* HAS_MMAP */
386
387#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
388 PL_timesbase.tms_utime = 0;
389 PL_timesbase.tms_stime = 0;
390 PL_timesbase.tms_cutime = 0;
391 PL_timesbase.tms_cstime = 0;
392#endif
393
7d113631
NC
394 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
395
a3e6e81e 396 PL_registered_mros = newHV();
9e169432
NC
397 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
398 HvMAX(PL_registered_mros) = 0;
a3e6e81e 399
8990e307 400 ENTER;
79072805
LW
401}
402
954c1994 403/*
62375a60
NIS
404=for apidoc nothreadhook
405
406Stub that provides thread hook for perl_destruct when there are
407no threads.
408
409=cut
410*/
411
412int
4e9e3734 413Perl_nothreadhook(pTHX)
62375a60 414{
96a5add6 415 PERL_UNUSED_CONTEXT;
62375a60
NIS
416 return 0;
417}
418
41e4abd8
NC
419#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
420void
421Perl_dump_sv_child(pTHX_ SV *sv)
422{
423 ssize_t got;
bf357333
NC
424 const int sock = PL_dumper_fd;
425 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
426 union control_un control;
427 struct msghdr msg;
808ad2d0 428 struct iovec vec[2];
bf357333 429 struct cmsghdr *cmptr;
808ad2d0
NC
430 int returned_errno;
431 unsigned char buffer[256];
41e4abd8 432
7918f24d
NC
433 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
434
bf357333 435 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
436 return;
437
438 PerlIO_flush(Perl_debug_log);
439
bf357333
NC
440 /* All these shenanigans are to pass a file descriptor over to our child for
441 it to dump out to. We can't let it hold open the file descriptor when it
442 forks, as the file descriptor it will dump to can turn out to be one end
443 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 444 be open, the wait would be forever.) */
bf357333
NC
445
446 msg.msg_control = control.control;
447 msg.msg_controllen = sizeof(control.control);
448 /* We're a connected socket so we don't need a destination */
449 msg.msg_name = NULL;
450 msg.msg_namelen = 0;
451 msg.msg_iov = vec;
808ad2d0 452 msg.msg_iovlen = 1;
bf357333
NC
453
454 cmptr = CMSG_FIRSTHDR(&msg);
455 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
456 cmptr->cmsg_level = SOL_SOCKET;
457 cmptr->cmsg_type = SCM_RIGHTS;
458 *((int *)CMSG_DATA(cmptr)) = 1;
459
460 vec[0].iov_base = (void*)&sv;
461 vec[0].iov_len = sizeof(sv);
462 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
463
464 if(got < 0) {
bf357333 465 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
466 abort();
467 }
bf357333
NC
468 if(got < sizeof(sv)) {
469 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
470 abort();
471 }
472
808ad2d0
NC
473 /* Return protocol is
474 int: errno value
475 unsigned char: length of location string (0 for empty)
476 unsigned char*: string (not terminated)
477 */
478 vec[0].iov_base = (void*)&returned_errno;
479 vec[0].iov_len = sizeof(returned_errno);
480 vec[1].iov_base = buffer;
481 vec[1].iov_len = 1;
482
483 got = readv(sock, vec, 2);
41e4abd8
NC
484
485 if(got < 0) {
486 perror("Debug leaking scalars parent read failed");
808ad2d0 487 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
488 abort();
489 }
808ad2d0 490 if(got < sizeof(returned_errno) + 1) {
41e4abd8 491 perror("Debug leaking scalars parent short read");
808ad2d0 492 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
493 abort();
494 }
495
808ad2d0
NC
496 if (*buffer) {
497 got = read(sock, buffer + 1, *buffer);
498 if(got < 0) {
499 perror("Debug leaking scalars parent read 2 failed");
500 PerlIO_flush(PerlIO_stderr());
501 abort();
502 }
503
504 if(got < *buffer) {
505 perror("Debug leaking scalars parent short read 2");
506 PerlIO_flush(PerlIO_stderr());
507 abort();
508 }
509 }
510
511 if (returned_errno || *buffer) {
512 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
513 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
514 returned_errno, strerror(returned_errno));
41e4abd8
NC
515 }
516}
517#endif
518
62375a60 519/*
954c1994
GS
520=for apidoc perl_destruct
521
522Shuts down a Perl interpreter. See L<perlembed>.
523
524=cut
525*/
526
31d77e54 527int
0cb96387 528perl_destruct(pTHXx)
79072805 529{
27da23d5 530 dVAR;
be2ea8ed 531 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 532 HV *hv;
2aa47728 533#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
534 pid_t child;
535#endif
8990e307 536
7918f24d
NC
537 PERL_ARGS_ASSERT_PERL_DESTRUCT;
538#ifndef MULTIPLICITY
ed6c66dd 539 PERL_UNUSED_ARG(my_perl);
7918f24d 540#endif
9d4ba2ae 541
3d22c4f0
GG
542 assert(PL_scopestack_ix == 1);
543
7766f137
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544 /* wait for all pseudo-forked children to finish */
545 PERL_WAIT_FOR_CHILDREN;
546
3280af22 547 destruct_level = PL_perl_destruct_level;
4633a7c4
LW
548#ifdef DEBUGGING
549 {
9d4ba2ae
AL
550 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
551 if (s) {
e1ec3a88 552 const int i = atoi(s);
5f05dabc
PP
553 if (destruct_level < i)
554 destruct_level = i;
555 }
4633a7c4
LW
556 }
557#endif
558
27da23d5 559 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
560 dJMPENV;
561 int x = 0;
562
563 JMPENV_PUSH(x);
1b6737cc 564 PERL_UNUSED_VAR(x);
9ebf26ad 565 if (PL_endav && !PL_minus_c) {
ca7b837b 566 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 567 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 568 }
f3faeb53 569 JMPENV_POP;
26f423df 570 }
f3faeb53 571 LEAVE;
a0d0e21e 572 FREETMPS;
3d22c4f0 573 assert(PL_scopestack_ix == 0);
a0d0e21e 574
e00b64d4 575 /* Need to flush since END blocks can produce output */
f13a2bc0 576 my_fflush_all();
e00b64d4 577
16c91539 578 if (PL_threadhook(aTHX)) {
62375a60 579 /* Threads hook has vetoed further cleanup */
c301d606 580 PL_veto_cleanup = TRUE;
37038d91 581 return STATUS_EXIT;
62375a60
NIS
582 }
583
2aa47728
NC
584#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
585 if (destruct_level != 0) {
586 /* Fork here to create a child. Our child's job is to preserve the
587 state of scalars prior to destruction, so that we can instruct it
588 to dump any scalars that we later find have leaked.
589 There's no subtlety in this code - it assumes POSIX, and it doesn't
590 fail gracefully */
591 int fd[2];
592
593 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
594 perror("Debug leaking scalars socketpair failed");
595 abort();
596 }
597
598 child = fork();
599 if(child == -1) {
600 perror("Debug leaking scalars fork failed");
601 abort();
602 }
603 if (!child) {
604 /* We are the child */
3125a5a4
NC
605 const int sock = fd[1];
606 const int debug_fd = PerlIO_fileno(Perl_debug_log);
607 int f;
808ad2d0
NC
608 const char *where;
609 /* Our success message is an integer 0, and a char 0 */
b61433a9 610 static const char success[sizeof(int) + 1] = {0};
3125a5a4 611
2aa47728 612 close(fd[0]);
2aa47728 613
3125a5a4
NC
614 /* We need to close all other file descriptors otherwise we end up
615 with interesting hangs, where the parent closes its end of a
616 pipe, and sits waiting for (another) child to terminate. Only
617 that child never terminates, because it never gets EOF, because
bf357333
NC
618 we also have the far end of the pipe open. We even need to
619 close the debugging fd, because sometimes it happens to be one
620 end of a pipe, and a process is waiting on the other end for
621 EOF. Normally it would be closed at some point earlier in
622 destruction, but if we happen to cause the pipe to remain open,
623 EOF never occurs, and we get an infinite hang. Hence all the
624 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
625
626 f = sysconf(_SC_OPEN_MAX);
627 if(f < 0) {
808ad2d0
NC
628 where = "sysconf failed";
629 goto abort;
3125a5a4
NC
630 }
631 while (f--) {
632 if (f == sock)
633 continue;
3125a5a4
NC
634 close(f);
635 }
636
2aa47728
NC
637 while (1) {
638 SV *target;
bf357333
NC
639 union control_un control;
640 struct msghdr msg;
641 struct iovec vec[1];
642 struct cmsghdr *cmptr;
643 ssize_t got;
644 int got_fd;
645
646 msg.msg_control = control.control;
647 msg.msg_controllen = sizeof(control.control);
648 /* We're a connected socket so we don't need a source */
649 msg.msg_name = NULL;
650 msg.msg_namelen = 0;
651 msg.msg_iov = vec;
652 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
653
654 vec[0].iov_base = (void*)&target;
655 vec[0].iov_len = sizeof(target);
656
657 got = recvmsg(sock, &msg, 0);
2aa47728
NC
658
659 if(got == 0)
660 break;
661 if(got < 0) {
808ad2d0
NC
662 where = "recv failed";
663 goto abort;
2aa47728
NC
664 }
665 if(got < sizeof(target)) {
808ad2d0
NC
666 where = "short recv";
667 goto abort;
2aa47728 668 }
bf357333 669
808ad2d0
NC
670 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
671 where = "no cmsg";
672 goto abort;
673 }
674 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
675 where = "wrong cmsg_len";
676 goto abort;
677 }
678 if(cmptr->cmsg_level != SOL_SOCKET) {
679 where = "wrong cmsg_level";
680 goto abort;
681 }
682 if(cmptr->cmsg_type != SCM_RIGHTS) {
683 where = "wrong cmsg_type";
684 goto abort;
685 }
bf357333
NC
686
687 got_fd = *(int*)CMSG_DATA(cmptr);
688 /* For our last little bit of trickery, put the file descriptor
689 back into Perl_debug_log, as if we never actually closed it
690 */
808ad2d0
NC
691 if(got_fd != debug_fd) {
692 if (dup2(got_fd, debug_fd) == -1) {
693 where = "dup2";
694 goto abort;
695 }
696 }
2aa47728 697 sv_dump(target);
bf357333 698
2aa47728
NC
699 PerlIO_flush(Perl_debug_log);
700
808ad2d0 701 got = write(sock, &success, sizeof(success));
2aa47728
NC
702
703 if(got < 0) {
808ad2d0
NC
704 where = "write failed";
705 goto abort;
2aa47728 706 }
808ad2d0
NC
707 if(got < sizeof(success)) {
708 where = "short write";
709 goto abort;
2aa47728
NC
710 }
711 }
712 _exit(0);
808ad2d0
NC
713 abort:
714 {
715 int send_errno = errno;
716 unsigned char length = (unsigned char) strlen(where);
717 struct iovec failure[3] = {
718 {(void*)&send_errno, sizeof(send_errno)},
719 {&length, 1},
720 {(void*)where, length}
721 };
722 int got = writev(sock, failure, 3);
723 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
724 in the parent if we try to read from the socketpair after the
725 child has exited, even if there was data to read.
726 So sleep a bit to give the parent a fighting chance of
727 reading the data. */
728 sleep(2);
729 _exit((got == -1) ? errno : 0);
730 }
bf357333 731 /* End of child. */
2aa47728 732 }
41e4abd8 733 PL_dumper_fd = fd[0];
2aa47728
NC
734 close(fd[1]);
735 }
736#endif
737
ff0cee69
PP
738 /* We must account for everything. */
739
740 /* Destroy the main CV and syntax tree */
17fbfdf6
NC
741 /* Do this now, because destroying ops can cause new SVs to be generated
742 in Perl_pad_swipe, and when running with -DDEBUG_LEAKING_SCALARS they
743 PL_curcop to point to a valid op from which the filename structure
744 member is copied. */
745 PL_curcop = &PL_compiling;
3280af22 746 if (PL_main_root) {
4e380990
DM
747 /* ensure comppad/curpad to refer to main's pad */
748 if (CvPADLIST(PL_main_cv)) {
749 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
750 }
3280af22 751 op_free(PL_main_root);
5f66b61c 752 PL_main_root = NULL;
a0d0e21e 753 }
5f66b61c 754 PL_main_start = NULL;
aac9d523
DM
755 /* note that PL_main_cv isn't usually actually freed at this point,
756 * due to the CvOUTSIDE refs from subs compiled within it. It will
757 * get freed once all the subs are freed in sv_clean_all(), for
758 * destruct_level > 0 */
3280af22 759 SvREFCNT_dec(PL_main_cv);
601f1833 760 PL_main_cv = NULL;
ca7b837b 761 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 762
13621cfb
NIS
763 /* Tell PerlIO we are about to tear things apart in case
764 we have layers which are using resources that should
765 be cleaned up now.
766 */
767
768 PerlIO_destruct(aTHX);
769
3280af22 770 if (PL_sv_objcount) {
a0d0e21e
LW
771 /*
772 * Try to destruct global references. We do this first so that the
773 * destructors and destructees still exist. Some sv's might remain.
774 * Non-referenced objects are on their own.
775 */
a0d0e21e 776 sv_clean_objs();
bf9cdc68 777 PL_sv_objcount = 0;
8990e307
LW
778 }
779
5cd24f17 780 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 781 SvREFCNT_dec(PL_warnhook);
a0714e2c 782 PL_warnhook = NULL;
3280af22 783 SvREFCNT_dec(PL_diehook);
a0714e2c 784 PL_diehook = NULL;
5cd24f17 785
4b556e6c 786 /* call exit list functions */
3280af22 787 while (PL_exitlistlen-- > 0)
acfe0abc 788 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 789
3280af22 790 Safefree(PL_exitlist);
4b556e6c 791
1c4916e5
CB
792 PL_exitlist = NULL;
793 PL_exitlistlen = 0;
794
a3e6e81e
NC
795 SvREFCNT_dec(PL_registered_mros);
796
551a8b83 797 /* jettison our possibly duplicated environment */
4b647fb0
DM
798 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
799 * so we certainly shouldn't free it here
800 */
2f42fcb0 801#ifndef PERL_MICRO
4b647fb0 802#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 803 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
804#ifdef USE_ITHREADS
805 /* only main thread can free environ[0] contents */
806 && PL_curinterp == aTHX
807#endif
808 )
809 {
551a8b83
JH
810 I32 i;
811
812 for (i = 0; environ[i]; i++)
4b420006 813 safesysfree(environ[i]);
0631ea03 814
4b420006
JH
815 /* Must use safesysfree() when working with environ. */
816 safesysfree(environ);
551a8b83
JH
817
818 environ = PL_origenviron;
819 }
820#endif
2f42fcb0 821#endif /* !PERL_MICRO */
551a8b83 822
30985c42
JH
823 if (destruct_level == 0) {
824
825 DEBUG_P(debprofdump());
826
827#if defined(PERLIO_LAYERS)
828 /* No more IO - including error messages ! */
829 PerlIO_cleanup(aTHX);
830#endif
831
832 CopFILE_free(&PL_compiling);
833 CopSTASH_free(&PL_compiling);
834
835 /* The exit() function will do everything that needs doing. */
836 return STATUS_EXIT;
837 }
838
5f8cb046
DM
839#ifdef USE_ITHREADS
840 /* the syntax tree is shared between clones
841 * so op_free(PL_main_root) only ReREFCNT_dec's
842 * REGEXPs in the parent interpreter
843 * we need to manually ReREFCNT_dec for the clones
844 */
5f8cb046 845 SvREFCNT_dec(PL_regex_padav);
7d49f689 846 PL_regex_padav = NULL;
5f8cb046
DM
847 PL_regex_pad = NULL;
848#endif
849
ad64d0ec 850 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
851 PL_stashcache = NULL;
852
5f05dabc
PP
853 /* loosen bonds of global variables */
854
2f9285f8
DM
855 /* XXX can PL_parser still be non-null here? */
856 if(PL_parser && PL_parser->rsfp) {
857 (void)PerlIO_close(PL_parser->rsfp);
858 PL_parser->rsfp = NULL;
8ebc5c01
PP
859 }
860
84386e14
RGS
861 if (PL_minus_F) {
862 Safefree(PL_splitstr);
863 PL_splitstr = NULL;
864 }
865
8ebc5c01 866 /* switches */
3280af22
NIS
867 PL_minus_n = FALSE;
868 PL_minus_p = FALSE;
869 PL_minus_l = FALSE;
870 PL_minus_a = FALSE;
871 PL_minus_F = FALSE;
872 PL_doswitches = FALSE;
599cee73 873 PL_dowarn = G_WARN_OFF;
3280af22 874 PL_sawampersand = FALSE; /* must save all match strings */
3280af22
NIS
875 PL_unsafe = FALSE;
876
877 Safefree(PL_inplace);
bd61b366 878 PL_inplace = NULL;
a7cb1f99 879 SvREFCNT_dec(PL_patchlevel);
1e8125c6 880 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
881
882 if (PL_e_script) {
883 SvREFCNT_dec(PL_e_script);
a0714e2c 884 PL_e_script = NULL;
8ebc5c01
PP
885 }
886
bf9cdc68
RG
887 PL_perldb = 0;
888
8ebc5c01
PP
889 /* magical thingies */
890
e23d9e2f
CS
891 SvREFCNT_dec(PL_ofsgv); /* *, */
892 PL_ofsgv = NULL;
5f05dabc 893
7889fe52 894 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 895 PL_ors_sv = NULL;
8ebc5c01 896
3280af22 897 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 898 PL_rs = NULL;
dc92893f 899
d33b2eba 900 Safefree(PL_osname); /* $^O */
bd61b366 901 PL_osname = NULL;
5f05dabc 902
3280af22 903 SvREFCNT_dec(PL_statname);
a0714e2c
SS
904 PL_statname = NULL;
905 PL_statgv = NULL;
5f05dabc 906
8ebc5c01
PP
907 /* defgv, aka *_ should be taken care of elsewhere */
908
7d5ea4e7
GS
909 /* float buffer */
910 Safefree(PL_efloatbuf);
bd61b366 911 PL_efloatbuf = NULL;
7d5ea4e7
GS
912 PL_efloatsize = 0;
913
8ebc5c01 914 /* startup and shutdown function lists */
3280af22 915 SvREFCNT_dec(PL_beginav);
5a837c8f 916 SvREFCNT_dec(PL_beginav_save);
3280af22 917 SvREFCNT_dec(PL_endav);
7d30b5c4 918 SvREFCNT_dec(PL_checkav);
ece599bd 919 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
920 SvREFCNT_dec(PL_unitcheckav);
921 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 922 SvREFCNT_dec(PL_initav);
7d49f689
NC
923 PL_beginav = NULL;
924 PL_beginav_save = NULL;
925 PL_endav = NULL;
926 PL_checkav = NULL;
927 PL_checkav_save = NULL;
3c10abe3
AG
928 PL_unitcheckav = NULL;
929 PL_unitcheckav_save = NULL;
7d49f689 930 PL_initav = NULL;
5618dfe8 931
8ebc5c01 932 /* shortcuts just get cleared */
a0714e2c
SS
933 PL_envgv = NULL;
934 PL_incgv = NULL;
935 PL_hintgv = NULL;
936 PL_errgv = NULL;
937 PL_argvgv = NULL;
938 PL_argvoutgv = NULL;
939 PL_stdingv = NULL;
940 PL_stderrgv = NULL;
941 PL_last_in_gv = NULL;
942 PL_replgv = NULL;
943 PL_DBgv = NULL;
944 PL_DBline = NULL;
945 PL_DBsub = NULL;
946 PL_DBsingle = NULL;
947 PL_DBtrace = NULL;
948 PL_DBsignal = NULL;
601f1833 949 PL_DBcv = NULL;
7d49f689 950 PL_dbargs = NULL;
5c284bb0 951 PL_debstash = NULL;
8ebc5c01 952
7a1c5554 953 SvREFCNT_dec(PL_argvout_stack);
7d49f689 954 PL_argvout_stack = NULL;
8ebc5c01 955
5c831c24 956 SvREFCNT_dec(PL_modglobal);
5c284bb0 957 PL_modglobal = NULL;
5c831c24 958 SvREFCNT_dec(PL_preambleav);
7d49f689 959 PL_preambleav = NULL;
5c831c24 960 SvREFCNT_dec(PL_subname);
a0714e2c 961 PL_subname = NULL;
ca0c25f6 962#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 963 SvREFCNT_dec(PL_pidstatus);
5c284bb0 964 PL_pidstatus = NULL;
ca0c25f6 965#endif
5c831c24 966 SvREFCNT_dec(PL_toptarget);
a0714e2c 967 PL_toptarget = NULL;
5c831c24 968 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
969 PL_bodytarget = NULL;
970 PL_formtarget = NULL;
5c831c24 971
d33b2eba 972 /* free locale stuff */
b9582b6a 973#ifdef USE_LOCALE_COLLATE
d33b2eba 974 Safefree(PL_collation_name);
bd61b366 975 PL_collation_name = NULL;
b9582b6a 976#endif
d33b2eba 977
b9582b6a 978#ifdef USE_LOCALE_NUMERIC
d33b2eba 979 Safefree(PL_numeric_name);
bd61b366 980 PL_numeric_name = NULL;
a453c169 981 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 982 PL_numeric_radix_sv = NULL;
b9582b6a 983#endif
d33b2eba 984
5c831c24
GS
985 /* clear utf8 character classes */
986 SvREFCNT_dec(PL_utf8_alnum);
5c831c24
GS
987 SvREFCNT_dec(PL_utf8_alpha);
988 SvREFCNT_dec(PL_utf8_space);
5c831c24
GS
989 SvREFCNT_dec(PL_utf8_graph);
990 SvREFCNT_dec(PL_utf8_digit);
991 SvREFCNT_dec(PL_utf8_upper);
992 SvREFCNT_dec(PL_utf8_lower);
993 SvREFCNT_dec(PL_utf8_print);
994 SvREFCNT_dec(PL_utf8_punct);
995 SvREFCNT_dec(PL_utf8_xdigit);
996 SvREFCNT_dec(PL_utf8_mark);
997 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 998 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 999 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1000 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1001 SvREFCNT_dec(PL_utf8_idstart);
1002 SvREFCNT_dec(PL_utf8_idcont);
2726813d 1003 SvREFCNT_dec(PL_utf8_foldclosures);
a0714e2c 1004 PL_utf8_alnum = NULL;
a0714e2c
SS
1005 PL_utf8_alpha = NULL;
1006 PL_utf8_space = NULL;
a0714e2c
SS
1007 PL_utf8_graph = NULL;
1008 PL_utf8_digit = NULL;
1009 PL_utf8_upper = NULL;
1010 PL_utf8_lower = NULL;
1011 PL_utf8_print = NULL;
1012 PL_utf8_punct = NULL;
1013 PL_utf8_xdigit = NULL;
1014 PL_utf8_mark = NULL;
1015 PL_utf8_toupper = NULL;
1016 PL_utf8_totitle = NULL;
1017 PL_utf8_tolower = NULL;
1018 PL_utf8_tofold = NULL;
1019 PL_utf8_idstart = NULL;
1020 PL_utf8_idcont = NULL;
2726813d 1021 PL_utf8_foldclosures = NULL;
5c831c24 1022
971a9dd3 1023 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1024 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1025 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1026 cophh_free(CopHINTHASH_get(&PL_compiling));
1027 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3
NIS
1028 CopFILE_free(&PL_compiling);
1029 CopSTASH_free(&PL_compiling);
5c831c24 1030
a0d0e21e 1031 /* Prepare to destruct main symbol table. */
5f05dabc 1032
3280af22 1033 hv = PL_defstash;
ca556bcd
DM
1034 /* break ref loop *:: <=> %:: */
1035 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1036 PL_defstash = 0;
a0d0e21e 1037 SvREFCNT_dec(hv);
5c831c24 1038 SvREFCNT_dec(PL_curstname);
a0714e2c 1039 PL_curstname = NULL;
a0d0e21e 1040
5a844595
GS
1041 /* clear queued errors */
1042 SvREFCNT_dec(PL_errors);
a0714e2c 1043 PL_errors = NULL;
5a844595 1044
dd69841b
BB
1045 SvREFCNT_dec(PL_isarev);
1046
a0d0e21e 1047 FREETMPS;
9b387841 1048 if (destruct_level >= 2) {
3280af22 1049 if (PL_scopestack_ix != 0)
9b387841
NC
1050 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1051 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1052 (long)PL_scopestack_ix);
3280af22 1053 if (PL_savestack_ix != 0)
9b387841
NC
1054 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1055 "Unbalanced saves: %ld more saves than restores\n",
1056 (long)PL_savestack_ix);
3280af22 1057 if (PL_tmps_floor != -1)
9b387841
NC
1058 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1059 (long)PL_tmps_floor + 1);
a0d0e21e 1060 if (cxstack_ix != -1)
9b387841
NC
1061 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1062 (long)cxstack_ix + 1);
a0d0e21e 1063 }
8990e307 1064
776df701 1065#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1066 /* the entries in this list are allocated via SV PVX's, so get freed
1067 * in sv_clean_all */
1068 Safefree(PL_my_cxt_list);
776df701 1069#endif
57bb2458 1070
8990e307 1071 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1072
1073 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1074 while (sv_clean_all() > 2)
5226ed68
JH
1075 ;
1076
d4777f27
GS
1077 AvREAL_off(PL_fdpid); /* no surviving entries */
1078 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1079 PL_fdpid = NULL;
d33b2eba 1080
6c644e78
GS
1081#ifdef HAVE_INTERP_INTERN
1082 sys_intern_clear();
1083#endif
1084
6e72f9df
PP
1085 /* Destruct the global string table. */
1086 {
1087 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1088 * so that sv_free() won't fail on them.
80459961
NC
1089 * Now that the global string table is using a single hunk of memory
1090 * for both HE and HEK, we either need to explicitly unshare it the
1091 * correct way, or actually free things here.
6e72f9df 1092 */
80459961
NC
1093 I32 riter = 0;
1094 const I32 max = HvMAX(PL_strtab);
c4420975 1095 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1096 HE *hent = array[0];
1097
6e72f9df 1098 for (;;) {
0453d815 1099 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1100 HE * const next = HeNEXT(hent);
9014280d 1101 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1102 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1103 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1104 Safefree(hent);
1105 hent = next;
6e72f9df
PP
1106 }
1107 if (!hent) {
1108 if (++riter > max)
1109 break;
1110 hent = array[riter];
1111 }
1112 }
80459961
NC
1113
1114 Safefree(array);
1115 HvARRAY(PL_strtab) = 0;
1116 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1117 }
3280af22 1118 SvREFCNT_dec(PL_strtab);
6e72f9df 1119
e652bb2f 1120#ifdef USE_ITHREADS
c21d1a0f 1121 /* free the pointer tables used for cloning */
a0739874 1122 ptr_table_free(PL_ptr_table);
bf9cdc68 1123 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1124#endif
a0739874 1125
d33b2eba
GS
1126 /* free special SVs */
1127
1128 SvREFCNT(&PL_sv_yes) = 0;
1129 sv_clear(&PL_sv_yes);
1130 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1131 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1132
1133 SvREFCNT(&PL_sv_no) = 0;
1134 sv_clear(&PL_sv_no);
1135 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1136 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1137
9f375a43
DM
1138 {
1139 int i;
1140 for (i=0; i<=2; i++) {
1141 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1142 sv_clear(PERL_DEBUG_PAD(i));
1143 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1144 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1145 }
1146 }
1147
0453d815 1148 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1149 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1150
eba0f806
DM
1151#ifdef DEBUG_LEAKING_SCALARS
1152 if (PL_sv_count != 0) {
1153 SV* sva;
1154 SV* sv;
1155 register SV* svend;
1156
ad64d0ec 1157 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1158 svend = &sva[SvREFCNT(sva)];
1159 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1160 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1161 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1162 " flags=0x%"UVxf
fd0854ff 1163 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1164 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1165 "serial %"UVuf"\n",
574b8821
NC
1166 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1167 pTHX__VALUE,
fd0854ff
DM
1168 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1169 sv->sv_debug_line,
1170 sv->sv_debug_inpad ? "for" : "by",
1171 sv->sv_debug_optype ?
1172 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1173 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1174 sv->sv_debug_serial
fd0854ff 1175 );
2aa47728 1176#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1177 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1178#endif
eba0f806
DM
1179 }
1180 }
1181 }
1182 }
2aa47728
NC
1183#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1184 {
1185 int status;
1186 fd_set rset;
1187 /* Wait for up to 4 seconds for child to terminate.
1188 This seems to be the least effort way of timing out on reaping
1189 its exit status. */
1190 struct timeval waitfor = {4, 0};
41e4abd8 1191 int sock = PL_dumper_fd;
2aa47728
NC
1192
1193 shutdown(sock, 1);
1194 FD_ZERO(&rset);
1195 FD_SET(sock, &rset);
1196 select(sock + 1, &rset, NULL, NULL, &waitfor);
1197 waitpid(child, &status, WNOHANG);
1198 close(sock);
1199 }
1200#endif
eba0f806 1201#endif
77abb4c6
NC
1202#ifdef DEBUG_LEAKING_SCALARS_ABORT
1203 if (PL_sv_count)
1204 abort();
1205#endif
bf9cdc68 1206 PL_sv_count = 0;
eba0f806 1207
f1fac472
NC
1208#ifdef PERL_DEBUG_READONLY_OPS
1209 free(PL_slabs);
1210 PL_slabs = NULL;
1211 PL_slab_count = 0;
1212#endif
eba0f806 1213
56a2bab7 1214#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1215 /* No more IO - including error messages ! */
1216 PerlIO_cleanup(aTHX);
1217#endif
1218
9f4bd222 1219 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1220 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1221 for no arg - and will try and SvREFCNT_dec it.
1222 */
1223 SvREFCNT(&PL_sv_undef) = 0;
1224 SvREADONLY_off(&PL_sv_undef);
1225
3280af22 1226 Safefree(PL_origfilename);
bd61b366 1227 PL_origfilename = NULL;
3280af22 1228 Safefree(PL_reg_start_tmp);
bf9cdc68
RG
1229 PL_reg_start_tmp = (char**)NULL;
1230 PL_reg_start_tmpl = 0;
43c5f42d 1231 Safefree(PL_reg_curpm);
82ba1be6 1232 Safefree(PL_reg_poscache);
dd28f7bb 1233 free_tied_hv_pool();
3280af22 1234 Safefree(PL_op_mask);
cf36064f 1235 Safefree(PL_psig_name);
bf9cdc68 1236 PL_psig_name = (SV**)NULL;
d525a7b2 1237 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1238 {
1239 /* We need to NULL PL_psig_pend first, so that
1240 signal handlers know not to use it */
1241 int *psig_save = PL_psig_pend;
1242 PL_psig_pend = (int*)NULL;
1243 Safefree(psig_save);
1244 }
a0714e2c 1245 PL_formfeed = NULL;
6e72f9df 1246 nuke_stacks();
bf9cdc68
RG
1247 PL_tainting = FALSE;
1248 PL_taint_warn = FALSE;
3280af22 1249 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1250 PL_debug = 0;
ac27b0f5 1251
a0d0e21e 1252 DEBUG_P(debprofdump());
d33b2eba 1253
e5dd39fc 1254#ifdef USE_REENTRANT_API
10bc17b6 1255 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1256#endif
1257
612f20c3
GS
1258 sv_free_arenas();
1259
5d9a96ca
DM
1260 while (PL_regmatch_slab) {
1261 regmatch_slab *s = PL_regmatch_slab;
1262 PL_regmatch_slab = PL_regmatch_slab->next;
1263 Safefree(s);
1264 }
1265
fc36a67e
PP
1266 /* As the absolutely last thing, free the non-arena SV for mess() */
1267
3280af22 1268 if (PL_mess_sv) {
f350b448
NC
1269 /* we know that type == SVt_PVMG */
1270
9c63abab 1271 /* it could have accumulated taint magic */
f350b448
NC
1272 MAGIC* mg;
1273 MAGIC* moremagic;
1274 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1275 moremagic = mg->mg_moremagic;
1276 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1277 && mg->mg_len >= 0)
1278 Safefree(mg->mg_ptr);
1279 Safefree(mg);
9c63abab 1280 }
f350b448 1281
fc36a67e 1282 /* we know that type >= SVt_PV */
8bd4d4c5 1283 SvPV_free(PL_mess_sv);
3280af22
NIS
1284 Safefree(SvANY(PL_mess_sv));
1285 Safefree(PL_mess_sv);
a0714e2c 1286 PL_mess_sv = NULL;
fc36a67e 1287 }
37038d91 1288 return STATUS_EXIT;
79072805
LW
1289}
1290
954c1994
GS
1291/*
1292=for apidoc perl_free
1293
1294Releases a Perl interpreter. See L<perlembed>.
1295
1296=cut
1297*/
1298
79072805 1299void
0cb96387 1300perl_free(pTHXx)
79072805 1301{
5174512c
NC
1302 dVAR;
1303
7918f24d
NC
1304 PERL_ARGS_ASSERT_PERL_FREE;
1305
c301d606
DM
1306 if (PL_veto_cleanup)
1307 return;
1308
7cb608b5 1309#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1310 {
1311 /*
1312 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1313 * value as we're probably hunting memory leaks then
1314 */
1315 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
1316 if (!s || atoi(s) == 0) {
4fd0a9b8 1317 const U32 old_debug = PL_debug;
55ef9aae
MHM
1318 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1319 thread at thread exit. */
4fd0a9b8
NC
1320 if (DEBUG_m_TEST) {
1321 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1322 "free this thread's memory\n");
1323 PL_debug &= ~ DEBUG_m_FLAG;
1324 }
55ef9aae
MHM
1325 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
1326 safesysfree(sTHX + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1327 PL_debug = old_debug;
55ef9aae
MHM
1328 }
1329 }
7cb608b5
NC
1330#endif
1331
acfe0abc 1332#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1333# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1334 {
acfe0abc 1335# ifdef NETWARE
7af12a34 1336 void *host = nw_internal_host;
acfe0abc 1337# else
7af12a34 1338 void *host = w32_internal_host;
acfe0abc 1339# endif
7af12a34 1340 PerlMem_free(aTHXx);
acfe0abc 1341# ifdef NETWARE
7af12a34 1342 nw_delete_internal_host(host);
acfe0abc 1343# else
7af12a34 1344 win32_delete_internal_host(host);
acfe0abc 1345# endif
7af12a34 1346 }
1c0ca838
GS
1347# else
1348 PerlMem_free(aTHXx);
1349# endif
acfe0abc
GS
1350#else
1351 PerlMem_free(aTHXx);
76e3520e 1352#endif
79072805
LW
1353}
1354
b7f7fff6 1355#if defined(USE_ITHREADS)
aebd1ac7
GA
1356/* provide destructors to clean up the thread key when libperl is unloaded */
1357#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1358
826955bd 1359#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1360#pragma fini "perl_fini"
666ad1ec
GA
1361#elif defined(__sun) && !defined(__GNUC__)
1362#pragma fini (perl_fini)
aebd1ac7
GA
1363#endif
1364
0dbb1585
AL
1365static void
1366#if defined(__GNUC__)
1367__attribute__((destructor))
aebd1ac7 1368#endif
de009b76 1369perl_fini(void)
aebd1ac7 1370{
27da23d5 1371 dVAR;
c301d606 1372 if (PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1373 FREE_THREAD_KEY;
1374}
1375
1376#endif /* WIN32 */
1377#endif /* THREADS */
1378
4b556e6c 1379void
864dbfa3 1380Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1381{
97aff369 1382 dVAR;
3280af22
NIS
1383 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1384 PL_exitlist[PL_exitlistlen].fn = fn;
1385 PL_exitlist[PL_exitlistlen].ptr = ptr;
1386 ++PL_exitlistlen;
4b556e6c
JD
1387}
1388
b7975bdd
NC
1389STATIC void
1390S_set_caret_X(pTHX) {
97aff369 1391 dVAR;
fafc274c 1392 GV* tmpgv = gv_fetchpvs("\030", GV_ADD|GV_NOTQUAL, SVt_PV); /* $^X */
b7975bdd 1393 if (tmpgv) {
0f1723e1 1394 SV *const caret_x = GvSV(tmpgv);
82552a95
NC
1395#if defined(OS2)
1396 sv_setpv(caret_x, os2_execname(aTHX));
1397#else
2982a345
NC
1398# ifdef USE_KERN_PROC_PATHNAME
1399 size_t size = 0;
1400 int mib[4];
1401 mib[0] = CTL_KERN;
1402 mib[1] = KERN_PROC;
1403 mib[2] = KERN_PROC_PATHNAME;
1404 mib[3] = -1;
1405
1406 if (sysctl(mib, 4, NULL, &size, NULL, 0) == 0
1407 && size > 0 && size < MAXPATHLEN * MAXPATHLEN) {
1408 sv_grow(caret_x, size);
1409
1410 if (sysctl(mib, 4, SvPVX(caret_x), &size, NULL, 0) == 0
1411 && size > 2) {
1412 SvPOK_only(caret_x);
1413 SvCUR_set(caret_x, size - 1);
1414 SvTAINT(caret_x);
1415 return;
1416 }
1417 }
ae60cb46
NC
1418# elif defined(USE_NSGETEXECUTABLEPATH)
1419 char buf[1];
1420 uint32_t size = sizeof(buf);
ae60cb46
NC
1421
1422 _NSGetExecutablePath(buf, &size);
1423 if (size < MAXPATHLEN * MAXPATHLEN) {
1424 sv_grow(caret_x, size);
1425 if (_NSGetExecutablePath(SvPVX(caret_x), &size) == 0) {
1426 char *const tidied = realpath(SvPVX(caret_x), NULL);
1427 if (tidied) {
1428 sv_setpv(caret_x, tidied);
1429 free(tidied);
1430 } else {
1431 SvPOK_only(caret_x);
1432 SvCUR_set(caret_x, size);
1433 }
1434 return;
1435 }
1436 }
2982a345 1437# elif defined(HAS_PROCSELFEXE)
700dd4f8
NC
1438 char buf[MAXPATHLEN];
1439 int len = readlink(PROCSELFEXE_PATH, buf, sizeof(buf) - 1);
1440
1441 /* On Playstation2 Linux V1.0 (kernel 2.2.1) readlink(/proc/self/exe)
1442 includes a spurious NUL which will cause $^X to fail in system
1443 or backticks (this will prevent extensions from being built and
1444 many tests from working). readlink is not meant to add a NUL.
1445 Normal readlink works fine.
1446 */
1447 if (len > 0 && buf[len-1] == '\0') {
1448 len--;
1449 }
1450
1451 /* FreeBSD's implementation is acknowledged to be imperfect, sometimes
1452 returning the text "unknown" from the readlink rather than the path
1453 to the executable (or returning an error from the readlink). Any
1454 valid path has a '/' in it somewhere, so use that to validate the
1455 result. See http://www.freebsd.org/cgi/query-pr.cgi?pr=35703
1456 */
1457 if (len > 0 && memchr(buf, '/', len)) {
1458 sv_setpvn(caret_x, buf, len);
82552a95 1459 return;
700dd4f8 1460 }
82552a95
NC
1461# endif
1462 /* Fallback to this: */
0f1723e1 1463 sv_setpv(caret_x, PL_origargv[0]);
b7975bdd 1464#endif
b7975bdd
NC
1465 }
1466}
1467
954c1994
GS
1468/*
1469=for apidoc perl_parse
1470
1471Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1472
1473=cut
1474*/
1475
03d9f026
FC
1476#define SET_CURSTASH(newstash) \
1477 if (PL_curstash != newstash) { \
1478 SvREFCNT_dec(PL_curstash); \
1479 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1480 }
1481
79072805 1482int
0cb96387 1483perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1484{
27da23d5 1485 dVAR;
6224f72b 1486 I32 oldscope;
6224f72b 1487 int ret;
db36c5a1 1488 dJMPENV;
8d063cd8 1489
7918f24d
NC
1490 PERL_ARGS_ASSERT_PERL_PARSE;
1491#ifndef MULTIPLICITY
ed6c66dd 1492 PERL_UNUSED_ARG(my_perl);
7918f24d 1493#endif
9d4ba2ae 1494
b0891165
JH
1495#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
1496 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
103dd899 1497 * This MUST be done before any hash stores or fetches take place.
486ec47a 1498 * If you set PL_rehash_seed (and presumably also PL_rehash_seed_set)
008fb0c0 1499 * yourself, it is your responsibility to provide a good random seed!
830b38bd 1500 * You can also define PERL_HASH_SEED in compile time, see hv.h. */
008fb0c0
NC
1501 if (!PL_rehash_seed_set)
1502 PL_rehash_seed = get_hash_seed();
b0891165 1503 {
9d4ba2ae 1504 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
bed60192 1505
1b6737cc
AL
1506 if (s && (atoi(s) == 1))
1507 PerlIO_printf(Perl_debug_log, "HASH_SEED = %"UVuf"\n", PL_rehash_seed);
b0891165
JH
1508 }
1509#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
1510
3280af22 1511 PL_origargc = argc;
e2975953 1512 PL_origargv = argv;
a0d0e21e 1513
a2722ac9
GA
1514 if (PL_origalen != 0) {
1515 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1516 }
1517 else {
3cb9023d
JH
1518 /* Set PL_origalen be the sum of the contiguous argv[]
1519 * elements plus the size of the env in case that it is
e9137a8e 1520 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1521 * as the maximum modifiable length of $0. In the worst case
1522 * the area we are able to modify is limited to the size of
43c32782 1523 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1524 * --jhi */
e1ec3a88 1525 const char *s = NULL;
54bfe034 1526 int i;
1b6737cc 1527 const UV mask =
7d8e7db3 1528 ~(UV)(PTRSIZE == 4 ? 3 : PTRSIZE == 8 ? 7 : PTRSIZE == 16 ? 15 : 0);
43c32782 1529 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1530 const UV aligned =
43c32782
JH
1531 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1532
1533 /* See if all the arguments are contiguous in memory. Note
1534 * that 'contiguous' is a loose term because some platforms
1535 * align the argv[] and the envp[]. If the arguments look
1536 * like non-aligned, assume that they are 'strictly' or
1537 * 'traditionally' contiguous. If the arguments look like
1538 * aligned, we just check that they are within aligned
1539 * PTRSIZE bytes. As long as no system has something bizarre
1540 * like the argv[] interleaved with some other data, we are
1541 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1542 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1543 while (*s) s++;
1544 for (i = 1; i < PL_origargc; i++) {
1545 if ((PL_origargv[i] == s + 1
43c32782 1546#ifdef OS2
c8941eeb 1547 || PL_origargv[i] == s + 2
43c32782 1548#endif
c8941eeb
JH
1549 )
1550 ||
1551 (aligned &&
1552 (PL_origargv[i] > s &&
1553 PL_origargv[i] <=
1554 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1555 )
1556 {
1557 s = PL_origargv[i];
1558 while (*s) s++;
1559 }
1560 else
1561 break;
54bfe034 1562 }
54bfe034 1563 }
a4a109c2
JD
1564
1565#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1566 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1567 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1568 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1569 ||
1570 (aligned &&
1571 (PL_origenviron[0] > s &&
1572 PL_origenviron[0] <=
1573 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1574 )
1575 {
9d419b5f 1576#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1577 s = PL_origenviron[0];
1578 while (*s) s++;
1579#endif
bd61b366 1580 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1581 /* Force copy of environment. */
1582 for (i = 1; PL_origenviron[i]; i++) {
1583 if (PL_origenviron[i] == s + 1
1584 ||
1585 (aligned &&
1586 (PL_origenviron[i] > s &&
1587 PL_origenviron[i] <=
1588 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1589 )
1590 {
1591 s = PL_origenviron[i];
1592 while (*s) s++;
1593 }
1594 else
1595 break;
54bfe034 1596 }
43c32782 1597 }
54bfe034 1598 }
a4a109c2
JD
1599#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1600
2d2af554 1601 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1602 }
1603
3280af22 1604 if (PL_do_undump) {
a0d0e21e
LW
1605
1606 /* Come here if running an undumped a.out. */
1607
3280af22
NIS
1608 PL_origfilename = savepv(argv[0]);
1609 PL_do_undump = FALSE;
a0d0e21e 1610 cxstack_ix = -1; /* start label stack again */
748a9306 1611 init_ids();
b7975bdd
NC
1612 assert (!PL_tainted);
1613 TAINT;
1614 S_set_caret_X(aTHX);
1615 TAINT_NOT;
a0d0e21e
LW
1616 init_postdump_symbols(argc,argv,env);
1617 return 0;
1618 }
1619
3280af22 1620 if (PL_main_root) {
3280af22 1621 op_free(PL_main_root);
5f66b61c 1622 PL_main_root = NULL;
ff0cee69 1623 }
5f66b61c 1624 PL_main_start = NULL;
3280af22 1625 SvREFCNT_dec(PL_main_cv);
601f1833 1626 PL_main_cv = NULL;
79072805 1627
3280af22
NIS
1628 time(&PL_basetime);
1629 oldscope = PL_scopestack_ix;
599cee73 1630 PL_dowarn = G_WARN_OFF;
f86702cc 1631
14dd3ad8 1632 JMPENV_PUSH(ret);
6224f72b 1633 switch (ret) {
312caa8e 1634 case 0:
14dd3ad8 1635 parse_body(env,xsinit);
9ebf26ad 1636 if (PL_unitcheckav) {
3c10abe3 1637 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1638 }
1639 if (PL_checkav) {
ca7b837b 1640 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1641 call_list(oldscope, PL_checkav);
9ebf26ad 1642 }
14dd3ad8
GS
1643 ret = 0;
1644 break;
6224f72b
GS
1645 case 1:
1646 STATUS_ALL_FAILURE;
1647 /* FALL THROUGH */
1648 case 2:
1649 /* my_exit() was called */
3280af22 1650 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1651 LEAVE;
1652 FREETMPS;
03d9f026 1653 SET_CURSTASH(PL_defstash);
9ebf26ad 1654 if (PL_unitcheckav) {
3c10abe3 1655 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1656 }
1657 if (PL_checkav) {
ca7b837b 1658 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1659 call_list(oldscope, PL_checkav);
9ebf26ad 1660 }
37038d91 1661 ret = STATUS_EXIT;
14dd3ad8 1662 break;
6224f72b 1663 case 3:
bf49b057 1664 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1665 ret = 1;
1666 break;
6224f72b 1667 }
14dd3ad8
GS
1668 JMPENV_POP;
1669 return ret;
1670}
1671
4a5df386
NC
1672/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1673 miniperl, and we need to see those flags reflected in the values here. */
1674
1675/* What this returns is subject to change. Use the public interface in Config.
1676 */
1677static void
1678S_Internals_V(pTHX_ CV *cv)
1679{
1680 dXSARGS;
1681#ifdef LOCAL_PATCH_COUNT
1682 const int local_patch_count = LOCAL_PATCH_COUNT;
1683#else
1684 const int local_patch_count = 0;
1685#endif
2dc296d2 1686 const int entries = 3 + local_patch_count;
4a5df386
NC
1687 int i;
1688 static char non_bincompat_options[] =
1689# ifdef DEBUGGING
1690 " DEBUGGING"
1691# endif
1692# ifdef NO_MATHOMS
0d311fbe 1693 " NO_MATHOMS"
4a5df386
NC
1694# endif
1695# ifdef PERL_DISABLE_PMC
1696 " PERL_DISABLE_PMC"
1697# endif
1698# ifdef PERL_DONT_CREATE_GVSV
1699 " PERL_DONT_CREATE_GVSV"
1700# endif
9a044a43
NC
1701# ifdef PERL_EXTERNAL_GLOB
1702 " PERL_EXTERNAL_GLOB"
1703# endif
4a5df386
NC
1704# ifdef PERL_IS_MINIPERL
1705 " PERL_IS_MINIPERL"
1706# endif
1707# ifdef PERL_MALLOC_WRAP
1708 " PERL_MALLOC_WRAP"
1709# endif
1710# ifdef PERL_MEM_LOG
1711 " PERL_MEM_LOG"
1712# endif
1713# ifdef PERL_MEM_LOG_NOIMPL
1714 " PERL_MEM_LOG_NOIMPL"
1715# endif
c3cf41ec
NC
1716# ifdef PERL_PRESERVE_IVUV
1717 " PERL_PRESERVE_IVUV"
1718# endif
c051e30b
NC
1719# ifdef PERL_RELOCATABLE_INCPUSH
1720 " PERL_RELOCATABLE_INCPUSH"
1721# endif
4a5df386
NC
1722# ifdef PERL_USE_DEVEL
1723 " PERL_USE_DEVEL"
1724# endif
1725# ifdef PERL_USE_SAFE_PUTENV
1726 " PERL_USE_SAFE_PUTENV"
1727# endif
a3749cf3
NC
1728# ifdef UNLINK_ALL_VERSIONS
1729 " UNLINK_ALL_VERSIONS"
1730# endif
de618ee4
NC
1731# ifdef USE_ATTRIBUTES_FOR_PERLIO
1732 " USE_ATTRIBUTES_FOR_PERLIO"
1733# endif
4a5df386
NC
1734# ifdef USE_FAST_STDIO
1735 " USE_FAST_STDIO"
1736# endif
98548bdf
NC
1737# ifdef USE_LOCALE
1738 " USE_LOCALE"
1739# endif
98548bdf
NC
1740# ifdef USE_LOCALE_CTYPE
1741 " USE_LOCALE_CTYPE"
1742# endif
5a8d8935
NC
1743# ifdef USE_PERL_ATOF
1744 " USE_PERL_ATOF"
1745# endif
0d311fbe
NC
1746# ifdef USE_SITECUSTOMIZE
1747 " USE_SITECUSTOMIZE"
1748# endif
4a5df386
NC
1749 ;
1750 PERL_UNUSED_ARG(cv);
1751 PERL_UNUSED_ARG(items);
1752
1753 EXTEND(SP, entries);
1754
1755 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1756 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1757 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1758
1759#ifdef __DATE__
1760# ifdef __TIME__
1761 PUSHs(Perl_newSVpvn_flags(aTHX_
1762 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1763 SVs_TEMP));
1764# else
1765 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1766 SVs_TEMP));
1767# endif
1768#else
1769 PUSHs(&PL_sv_undef);
1770#endif
1771
4a5df386
NC
1772 for (i = 1; i <= local_patch_count; i++) {
1773 /* This will be an undef, if PL_localpatches[i] is NULL. */
1774 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1775 }
1776
1777 XSRETURN(entries);
1778}
1779
be71fc8f
NC
1780#define INCPUSH_UNSHIFT 0x01
1781#define INCPUSH_ADD_OLD_VERS 0x02
1782#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1783#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1784#define INCPUSH_NOT_BASEDIR 0x10
1785#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1786#define INCPUSH_ADD_SUB_DIRS \
1787 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1788
312caa8e 1789STATIC void *
14dd3ad8 1790S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1791{
27da23d5 1792 dVAR;
2f9285f8 1793 PerlIO *rsfp;
312caa8e 1794 int argc = PL_origargc;
8f42b153 1795 char **argv = PL_origargv;
e1ec3a88 1796 const char *scriptname = NULL;
312caa8e 1797 VOL bool dosearch = FALSE;
c7030b81 1798 register char c;
737c24fc 1799 bool doextract = FALSE;
bd61b366 1800 const char *cddir = NULL;
ab019eaa 1801#ifdef USE_SITECUSTOMIZE
20ef40cf 1802 bool minus_f = FALSE;
ab019eaa 1803#endif
009d90df 1804 SV *linestr_sv = newSV_type(SVt_PVIV);
5486870f 1805 bool add_read_e_script = FALSE;
009d90df 1806
ca7b837b 1807 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1808
009d90df 1809 SvGROW(linestr_sv, 80);
76f68e9b 1810 sv_setpvs(linestr_sv,"");
312caa8e 1811
6224f72b 1812 init_main_stash();
54310121 1813
c7030b81
NC
1814 {
1815 const char *s;
6224f72b
GS
1816 for (argc--,argv++; argc > 0; argc--,argv++) {
1817 if (argv[0][0] != '-' || !argv[0][1])
1818 break;
6224f72b
GS
1819 s = argv[0]+1;
1820 reswitch:
47f56822 1821 switch ((c = *s)) {
729a02f2 1822 case 'C':
1d5472a9
GS
1823#ifndef PERL_STRICT_CR
1824 case '\r':
1825#endif
6224f72b
GS
1826 case ' ':
1827 case '0':
1828 case 'F':
1829 case 'a':
1830 case 'c':
1831 case 'd':
1832 case 'D':
1833 case 'h':
1834 case 'i':
1835 case 'l':
1836 case 'M':
1837 case 'm':
1838 case 'n':
1839 case 'p':
1840 case 's':
1841 case 'u':
1842 case 'U':
1843 case 'v':
599cee73
PM
1844 case 'W':
1845 case 'X':
6224f72b 1846 case 'w':
97bd5664 1847 if ((s = moreswitches(s)))
6224f72b
GS
1848 goto reswitch;
1849 break;
33b78306 1850
1dbad523 1851 case 't':
22f7c9c9 1852 CHECK_MALLOC_TOO_LATE_FOR('t');
317ea90d
MS
1853 if( !PL_tainting ) {
1854 PL_taint_warn = TRUE;
1855 PL_tainting = TRUE;
1856 }
1857 s++;
1858 goto reswitch;
6224f72b 1859 case 'T':
22f7c9c9 1860 CHECK_MALLOC_TOO_LATE_FOR('T');
3280af22 1861 PL_tainting = TRUE;
317ea90d 1862 PL_taint_warn = FALSE;
6224f72b
GS
1863 s++;
1864 goto reswitch;
f86702cc 1865
bc9b29db
RH
1866 case 'E':
1867 PL_minus_E = TRUE;
1868 /* FALL THROUGH */
6224f72b 1869 case 'e':
f20b2998 1870 forbid_setid('e', FALSE);
3280af22 1871 if (!PL_e_script) {
396482e1 1872 PL_e_script = newSVpvs("");
5486870f 1873 add_read_e_script = TRUE;
6224f72b
GS
1874 }
1875 if (*++s)
3280af22 1876 sv_catpv(PL_e_script, s);
6224f72b 1877 else if (argv[1]) {
3280af22 1878 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1879 argc--,argv++;
1880 }
1881 else
47f56822 1882 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1883 sv_catpvs(PL_e_script, "\n");
6224f72b 1884 break;
afe37c7d 1885
20ef40cf 1886 case 'f':
f5542d3a 1887#ifdef USE_SITECUSTOMIZE
20ef40cf 1888 minus_f = TRUE;
f5542d3a 1889#endif
20ef40cf
GA
1890 s++;
1891 goto reswitch;
1892
6224f72b 1893 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1894 forbid_setid('I', FALSE);
bd61b366 1895 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1896 argc--,argv++;
1897 }
6224f72b 1898 if (s && *s) {
0df16ed7 1899 STRLEN len = strlen(s);
55b4bc1c 1900 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1901 }
1902 else
a67e862a 1903 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1904 break;
6224f72b 1905 case 'S':
f20b2998 1906 forbid_setid('S', FALSE);
6224f72b
GS
1907 dosearch = TRUE;
1908 s++;
1909 goto reswitch;
1910 case 'V':
7edfd0ef
NC
1911 {
1912 SV *opts_prog;
1913
7edfd0ef 1914 if (*++s != ':') {
37ca4a5b 1915 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1916 }
1917 else {
1918 ++s;
1919 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1920 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1921 0, s, 0);
1922 s += strlen(s);
1923 }
37ca4a5b 1924 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1925 /* don't look for script or read stdin */
1926 scriptname = BIT_BUCKET;
1927 goto reswitch;
6224f72b 1928 }
6224f72b 1929 case 'x':
737c24fc 1930 doextract = TRUE;
6224f72b 1931 s++;
304334da 1932 if (*s)
f4c556ac 1933 cddir = s;
6224f72b
GS
1934 break;
1935 case 0:
1936 break;
1937 case '-':
1938 if (!*++s || isSPACE(*s)) {
1939 argc--,argv++;
1940 goto switch_end;
1941 }
ee8bc8b7
NC
1942 /* catch use of gnu style long options.
1943 Both of these exit immediately. */
1944 if (strEQ(s, "version"))
1945 minus_v();
1946 if (strEQ(s, "help"))
1947 usage();
6224f72b
GS
1948 s--;
1949 /* FALL THROUGH */
1950 default:
cea2e8a9 1951 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1952 }
1953 }
c7030b81
NC
1954 }
1955
6224f72b 1956 switch_end:
54310121 1957
c7030b81
NC
1958 {
1959 char *s;
1960
f675dbe5
CB
1961 if (
1962#ifndef SECURE_INTERNAL_GETENV
1963 !PL_tainting &&
1964#endif
cf756827 1965 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1966 {
74288ac8
GS
1967 while (isSPACE(*s))
1968 s++;
317ea90d 1969 if (*s == '-' && *(s+1) == 'T') {
22f7c9c9 1970 CHECK_MALLOC_TOO_LATE_FOR('T');
74288ac8 1971 PL_tainting = TRUE;
317ea90d
MS
1972 PL_taint_warn = FALSE;
1973 }
74288ac8 1974 else {
bd61b366 1975 char *popt_copy = NULL;
74288ac8 1976 while (s && *s) {
54913509 1977 const char *d;
74288ac8
GS
1978 while (isSPACE(*s))
1979 s++;
1980 if (*s == '-') {
1981 s++;
1982 if (isSPACE(*s))
1983 continue;
1984 }
4ea8f8fb 1985 d = s;
74288ac8
GS
1986 if (!*s)
1987 break;
2b622f1a 1988 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 1989 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
1990 while (++s && *s) {
1991 if (isSPACE(*s)) {
cf756827 1992 if (!popt_copy) {
bfa6c418
NC
1993 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
1994 s = popt_copy + (s - d);
1995 d = popt_copy;
cf756827 1996 }
4ea8f8fb
MS
1997 *s++ = '\0';
1998 break;
1999 }
2000 }
1c4db469 2001 if (*d == 't') {
317ea90d
MS
2002 if( !PL_tainting ) {
2003 PL_taint_warn = TRUE;
2004 PL_tainting = TRUE;
2005 }
1c4db469 2006 } else {
97bd5664 2007 moreswitches(d);
1c4db469 2008 }
6224f72b 2009 }
6224f72b
GS
2010 }
2011 }
c7030b81 2012 }
a0d0e21e 2013
c29067d7
CH
2014 /* Set $^X early so that it can be used for relocatable paths in @INC */
2015 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
2016 assert (!PL_tainted);
2017 TAINT;
2018 S_set_caret_X(aTHX);
2019 TAINT_NOT;
2020
43c0c913 2021#if defined(USE_SITECUSTOMIZE)
20ef40cf 2022 if (!minus_f) {
43c0c913 2023 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2024 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2025 ie a q() operator with a NUL byte as a the delimiter. This avoids
2026 problems with pathnames containing (say) ' */
43c0c913
NC
2027# ifdef PERL_IS_MINIPERL
2028 AV *const inc = GvAV(PL_incgv);
2029 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2030
2031 if (inc0) {
2032 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2033 Perl_newSVpvf(aTHX_
fc81b718
NC
2034 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} && do q%c%"SVf"/buildcustomize.pl%c }",
2035 0, *inc0, 0,
2036 0, *inc0, 0));
43c0c913
NC
2037 }
2038# else
2039 /* SITELIB_EXP is a function call on Win32. */
c29067d7
CH
2040 const char *const raw_sitelib = SITELIB_EXP;
2041 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2042 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2043 INCPUSH_CAN_RELOCATE);
2044 const char *const sitelib = SvPVX(sitelib_sv);
29a861e7 2045 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
404ad9dc 2046 Perl_newSVpvf(aTHX_
fc81b718
NC
2047 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2048 0, sitelib, 0,
2049 0, sitelib, 0));
c29067d7
CH
2050 assert (SvREFCNT(sitelib_sv) == 1);
2051 SvREFCNT_dec(sitelib_sv);
43c0c913 2052# endif
20ef40cf
GA
2053 }
2054#endif
2055
6224f72b
GS
2056 if (!scriptname)
2057 scriptname = argv[0];
3280af22 2058 if (PL_e_script) {
6224f72b
GS
2059 argc++,argv--;
2060 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2061 }
bd61b366 2062 else if (scriptname == NULL) {
6224f72b
GS
2063#ifdef MSDOS
2064 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2065 moreswitches("h");
6224f72b
GS
2066#endif
2067 scriptname = "-";
2068 }
2069
b7975bdd 2070 assert (!PL_tainted);
2cace6ac 2071 init_perllib();
6224f72b 2072
a52eba0e 2073 {
f20b2998 2074 bool suidscript = FALSE;
829372d3 2075
cc69b689 2076 open_script(scriptname, dosearch, &suidscript, &rsfp);
6224f72b 2077
2f9285f8 2078 validate_suid(validarg, scriptname, fdscript, suidscript,
cc69b689 2079 linestr_sv, rsfp);
6224f72b 2080
64ca3a65 2081#ifndef PERL_MICRO
a52eba0e
NC
2082# if defined(SIGCHLD) || defined(SIGCLD)
2083 {
2084# ifndef SIGCHLD
2085# define SIGCHLD SIGCLD
2086# endif
2087 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2088 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2089 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2090 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2091 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2092 }
0b5b802d 2093 }
a52eba0e 2094# endif
64ca3a65 2095#endif
0b5b802d 2096
737c24fc 2097 if (doextract) {
faef540c 2098
f20b2998 2099 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2100 setuid scripts. */
2101 forbid_setid('x', suidscript);
f20b2998 2102 /* Hence you can't get here if suidscript is true */
faef540c 2103
2f9285f8 2104 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2105 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2106 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2107 }
f4c556ac 2108 }
6224f72b 2109
ea726b52 2110 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2111 CvUNIQUE_on(PL_compcv);
2112
dd2155a4 2113 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2114
dd69841b
BB
2115 PL_isarev = newHV();
2116
0c4f7ff0 2117 boot_core_PerlIO();
6224f72b 2118 boot_core_UNIVERSAL();
e1a479c5 2119 boot_core_mro();
4a5df386 2120 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2121
2122 if (xsinit)
acfe0abc 2123 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2124#ifndef PERL_MICRO
d0d72822 2125#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(EPOC) || defined(SYMBIAN)
c5be433b 2126 init_os_extras();
6224f72b 2127#endif
64ca3a65 2128#endif
6224f72b 2129
29209bc5 2130#ifdef USE_SOCKS
1b9c9cf5
DH
2131# ifdef HAS_SOCKS5_INIT
2132 socks5_init(argv[0]);
2133# else
29209bc5 2134 SOCKSinit(argv[0]);
1b9c9cf5 2135# endif
ac27b0f5 2136#endif
29209bc5 2137
6224f72b
GS
2138 init_predump_symbols();
2139 /* init_postdump_symbols not currently designed to be called */
2140 /* more than once (ENV isn't cleared first, for example) */
2141 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2142 if (!PL_do_undump)
6224f72b
GS
2143 init_postdump_symbols(argc,argv,env);
2144
27da23d5
JH
2145 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2146 * or explicitly in some platforms.
085a54d9 2147 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2148 * look like the user wants to use UTF-8. */
a0fd4948 2149#if defined(__SYMBIAN32__)
27da23d5
JH
2150 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2151#endif
e27b5b51 2152# ifndef PERL_IS_MINIPERL
06e66572
JH
2153 if (PL_unicode) {
2154 /* Requires init_predump_symbols(). */
a05d7ebb 2155 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2156 IO* io;
2157 PerlIO* fp;
2158 SV* sv;
2159
a05d7ebb 2160 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2161 * and the default open disciplines. */
a05d7ebb
JH
2162 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2163 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2164 (fp = IoIFP(io)))
2165 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2166 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2167 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2168 (fp = IoOFP(io)))
2169 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2170 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2171 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2172 (fp = IoOFP(io)))
2173 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2174 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2175 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2176 SVt_PV)))) {
a05d7ebb
JH
2177 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2178 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2179 if (in) {
2180 if (out)
76f68e9b 2181 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2182 else
76f68e9b 2183 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2184 }
2185 else if (out)
76f68e9b 2186 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2187 SvSETMAGIC(sv);
2188 }
b310b053
JH
2189 }
2190 }
e27b5b51 2191#endif
b310b053 2192
c7030b81
NC
2193 {
2194 const char *s;
4ffa73a3
JH
2195 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2196 if (strEQ(s, "unsafe"))
2197 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2198 else if (strEQ(s, "safe"))
2199 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2200 else
2201 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2202 }
c7030b81 2203 }
4ffa73a3 2204
81d86705 2205#ifdef PERL_MAD
c7030b81
NC
2206 {
2207 const char *s;
81d86705
NC
2208 if ((s = PerlEnv_getenv("PERL_XMLDUMP"))) {
2209 PL_madskills = 1;
2210 PL_minus_c = 1;
2211 if (!s || !s[0])
2212 PL_xmlfp = PerlIO_stdout();
2213 else {
2214 PL_xmlfp = PerlIO_open(s, "w");
2215 if (!PL_xmlfp)
2216 Perl_croak(aTHX_ "Can't open %s", s);
2217 }
1a9a51d4 2218 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2219 }
c7030b81
NC
2220 }
2221
2222 {
2223 const char *s;
81d86705
NC
2224 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2225 PL_madskills = atoi(s);
1a9a51d4 2226 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2227 }
c7030b81 2228 }
81d86705
NC
2229#endif
2230
8eaa0acf 2231 lex_start(linestr_sv, rsfp, 0);
219f7226 2232 PL_subname = newSVpvs("main");
6224f72b 2233
5486870f
DM
2234 if (add_read_e_script)
2235 filter_add(read_e_script, NULL);
2236
6224f72b
GS
2237 /* now parse the script */
2238
93189314 2239 SETERRNO(0,SS_NORMAL);
28ac2b49 2240 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2241 if (PL_minus_c)
cea2e8a9 2242 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2243 else {
cea2e8a9 2244 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2245 PL_origfilename);
6224f72b
GS
2246 }
2247 }
57843af0 2248 CopLINE_set(PL_curcop, 0);
03d9f026 2249 SET_CURSTASH(PL_defstash);
3280af22
NIS
2250 if (PL_e_script) {
2251 SvREFCNT_dec(PL_e_script);
a0714e2c 2252 PL_e_script = NULL;
6224f72b
GS
2253 }
2254
3280af22 2255 if (PL_do_undump)
6224f72b
GS
2256 my_unexec();
2257
57843af0
GS
2258 if (isWARN_ONCE) {
2259 SAVECOPFILE(PL_curcop);
2260 SAVECOPLINE(PL_curcop);
3280af22 2261 gv_check(PL_defstash);
57843af0 2262 }
6224f72b
GS
2263
2264 LEAVE;
2265 FREETMPS;
2266
2267#ifdef MYMALLOC
f6a607bc
RGS
2268 {
2269 const char *s;
6224f72b
GS
2270 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2271 dump_mstats("after compilation:");
f6a607bc 2272 }
6224f72b
GS
2273#endif
2274
2275 ENTER;
febb3a6d 2276 PL_restartjmpenv = NULL;
3280af22 2277 PL_restartop = 0;
312caa8e 2278 return NULL;
6224f72b
GS
2279}
2280
954c1994
GS
2281/*
2282=for apidoc perl_run
2283
2284Tells a Perl interpreter to run. See L<perlembed>.
2285
2286=cut
2287*/
2288
6224f72b 2289int
0cb96387 2290perl_run(pTHXx)
6224f72b 2291{
97aff369 2292 dVAR;
6224f72b 2293 I32 oldscope;
14dd3ad8 2294 int ret = 0;
db36c5a1 2295 dJMPENV;
6224f72b 2296
7918f24d
NC
2297 PERL_ARGS_ASSERT_PERL_RUN;
2298#ifndef MULTIPLICITY
ed6c66dd 2299 PERL_UNUSED_ARG(my_perl);
7918f24d 2300#endif
9d4ba2ae 2301
3280af22 2302 oldscope = PL_scopestack_ix;
96e176bf
CL
2303#ifdef VMS
2304 VMSISH_HUSHED = 0;
2305#endif
6224f72b 2306
14dd3ad8 2307 JMPENV_PUSH(ret);
6224f72b
GS
2308 switch (ret) {
2309 case 1:
2310 cxstack_ix = -1; /* start context stack again */
312caa8e 2311 goto redo_body;
14dd3ad8 2312 case 0: /* normal completion */
14dd3ad8
GS
2313 redo_body:
2314 run_body(oldscope);
14dd3ad8
GS
2315 /* FALL THROUGH */
2316 case 2: /* my_exit() */
3280af22 2317 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2318 LEAVE;
2319 FREETMPS;
03d9f026 2320 SET_CURSTASH(PL_defstash);
3a1ee7e8 2321 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2322 PL_endav && !PL_minus_c) {
ca7b837b 2323 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2324 call_list(oldscope, PL_endav);
9ebf26ad 2325 }
6224f72b
GS
2326#ifdef MYMALLOC
2327 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2328 dump_mstats("after execution: ");
2329#endif
37038d91 2330 ret = STATUS_EXIT;
14dd3ad8 2331 break;
6224f72b 2332 case 3:
312caa8e
CS
2333 if (PL_restartop) {
2334 POPSTACK_TO(PL_mainstack);
2335 goto redo_body;
6224f72b 2336 }
5637ef5b 2337 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2338 FREETMPS;
14dd3ad8
GS
2339 ret = 1;
2340 break;
6224f72b
GS
2341 }
2342
14dd3ad8
GS
2343 JMPENV_POP;
2344 return ret;
312caa8e
CS
2345}
2346
dd374669 2347STATIC void
14dd3ad8
GS
2348S_run_body(pTHX_ I32 oldscope)
2349{
97aff369 2350 dVAR;
6224f72b 2351 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support.\n",
3280af22 2352 PL_sawampersand ? "Enabling" : "Omitting"));
6224f72b 2353
3280af22 2354 if (!PL_restartop) {
81d86705
NC
2355#ifdef PERL_MAD
2356 if (PL_xmlfp) {
2357 xmldump_all();
2358 exit(0); /* less likely to core dump than my_exit(0) */
2359 }
2360#endif
cf2782cd 2361#ifdef DEBUGGING
f0e3f042
CS
2362 if (DEBUG_x_TEST || DEBUG_B_TEST)
2363 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2364 if (!DEBUG_q_TEST)
2365 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2366#endif
6224f72b 2367
3280af22 2368 if (PL_minus_c) {
bf49b057 2369 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2370 my_exit(0);
2371 }
3280af22 2372 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2373 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2374 if (PL_initav) {
ca7b837b 2375 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2376 call_list(oldscope, PL_initav);
9ebf26ad 2377 }
f1fac472
NC
2378#ifdef PERL_DEBUG_READONLY_OPS
2379 Perl_pending_Slabs_to_ro(aTHX);
2380#endif
6224f72b
GS
2381 }
2382
2383 /* do it */
2384
ca7b837b 2385 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2386
3280af22 2387 if (PL_restartop) {
febb3a6d 2388 PL_restartjmpenv = NULL;
533c011a 2389 PL_op = PL_restartop;
3280af22 2390 PL_restartop = 0;
cea2e8a9 2391 CALLRUNOPS(aTHX);
6224f72b 2392 }
3280af22
NIS
2393 else if (PL_main_start) {
2394 CvDEPTH(PL_main_cv) = 1;
533c011a 2395 PL_op = PL_main_start;
cea2e8a9 2396 CALLRUNOPS(aTHX);
6224f72b 2397 }
f6b3007c
JH
2398 my_exit(0);
2399 /* NOTREACHED */
6224f72b
GS
2400}
2401
954c1994 2402/*
ccfc67b7
JH
2403=head1 SV Manipulation Functions
2404
954c1994
GS
2405=for apidoc p||get_sv
2406
64ace3f8
NC
2407Returns the SV of the specified Perl scalar. C<flags> are passed to
2408C<gv_fetchpv>. If C<GV_ADD> is set and the
2409Perl variable does not exist then it will be created. If C<flags> is zero
2410and the variable does not exist then NULL is returned.
954c1994
GS
2411
2412=cut
2413*/
2414
6224f72b 2415SV*
64ace3f8 2416Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2417{
2418 GV *gv;
7918f24d
NC
2419
2420 PERL_ARGS_ASSERT_GET_SV;
2421
64ace3f8 2422 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2423 if (gv)
2424 return GvSV(gv);
a0714e2c 2425 return NULL;
6224f72b
GS
2426}
2427
954c1994 2428/*
ccfc67b7
JH
2429=head1 Array Manipulation Functions
2430
954c1994
GS
2431=for apidoc p||get_av
2432
f0b90de1
SF
2433Returns the AV of the specified Perl global or package array with the given
2434name (so it won't work on lexical variables). C<flags> are passed
2435to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2436Perl variable does not exist then it will be created. If C<flags> is zero
2437and the variable does not exist then NULL is returned.
954c1994 2438
f0b90de1
SF
2439Perl equivalent: C<@{"$name"}>.
2440
954c1994
GS
2441=cut
2442*/
2443
6224f72b 2444AV*
cbfd0a87 2445Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2446{
cbfd0a87 2447 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2448
2449 PERL_ARGS_ASSERT_GET_AV;
2450
cbfd0a87 2451 if (flags)
6224f72b
GS
2452 return GvAVn(gv);
2453 if (gv)
2454 return GvAV(gv);
7d49f689 2455 return NULL;
6224f72b
GS
2456}
2457
954c1994 2458/*
ccfc67b7
JH
2459=head1 Hash Manipulation Functions
2460
954c1994
GS
2461=for apidoc p||get_hv
2462
6673a63c
NC
2463Returns the HV of the specified Perl hash. C<flags> are passed to
2464C<gv_fetchpv>. If C<GV_ADD> is set and the
2465Perl variable does not exist then it will be created. If C<flags> is zero
2466and the variable does not exist then NULL is returned.
954c1994
GS
2467
2468=cut
2469*/
2470
6224f72b 2471HV*
6673a63c 2472Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2473{
6673a63c 2474 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2475
2476 PERL_ARGS_ASSERT_GET_HV;
2477
6673a63c 2478 if (flags)
a0d0e21e
LW
2479 return GvHVn(gv);
2480 if (gv)
2481 return GvHV(gv);
5c284bb0 2482 return NULL;
a0d0e21e
LW
2483}
2484
954c1994 2485/*
ccfc67b7
JH
2486=head1 CV Manipulation Functions
2487
780a5241
NC
2488=for apidoc p||get_cvn_flags
2489
2490Returns the CV of the specified Perl subroutine. C<flags> are passed to
2491C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
2492exist then it will be declared (which has the same effect as saying
2493C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2494then NULL is returned.
2495
954c1994
GS
2496=for apidoc p||get_cv
2497
780a5241 2498Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2499
2500=cut
2501*/
2502
a0d0e21e 2503CV*
780a5241 2504Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2505{
780a5241 2506 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
f6ec51f7
GS
2507 /* XXX this is probably not what they think they're getting.
2508 * It has the same effect as "sub name;", i.e. just a forward
2509 * declaration! */
7918f24d
NC
2510
2511 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2512
780a5241 2513 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
740cce10 2514 SV *const sv = newSVpvn_flags(name, len, flags & SVf_UTF8);
774d564b 2515 return newSUB(start_subparse(FALSE, 0),
780a5241 2516 newSVOP(OP_CONST, 0, sv),
5f66b61c 2517 NULL, NULL);
780a5241 2518 }
a0d0e21e 2519 if (gv)
8ebc5c01 2520 return GvCVu(gv);
601f1833 2521 return NULL;
a0d0e21e
LW
2522}
2523
2c67934f
NC
2524/* Nothing in core calls this now, but we can't replace it with a macro and
2525 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2526CV*
2527Perl_get_cv(pTHX_ const char *name, I32 flags)
2528{
7918f24d
NC
2529 PERL_ARGS_ASSERT_GET_CV;
2530
780a5241
NC
2531 return get_cvn_flags(name, strlen(name), flags);
2532}
2533
79072805
LW
2534/* Be sure to refetch the stack pointer after calling these routines. */
2535
954c1994 2536/*
ccfc67b7
JH
2537
2538=head1 Callback Functions
2539
954c1994
GS
2540=for apidoc p||call_argv
2541
f0b90de1
SF
2542Performs a callback to the specified named and package-scoped Perl subroutine
2543with C<argv> (a NULL-terminated array of strings) as arguments. See L<perlcall>.
2544
2545Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2546
2547=cut
2548*/
2549
a0d0e21e 2550I32
8f42b153 2551Perl_call_argv(pTHX_ const char *sub_name, I32 flags, register char **argv)
ac27b0f5 2552
8ac85365
NIS
2553 /* See G_* flags in cop.h */
2554 /* null terminated arg list */
8990e307 2555{
97aff369 2556 dVAR;
a0d0e21e 2557 dSP;
8990e307 2558
7918f24d
NC
2559 PERL_ARGS_ASSERT_CALL_ARGV;
2560
924508f0 2561 PUSHMARK(SP);
a0d0e21e 2562 if (argv) {
8990e307 2563 while (*argv) {
6e449a3a 2564 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2565 argv++;
2566 }
a0d0e21e 2567 PUTBACK;
8990e307 2568 }
864dbfa3 2569 return call_pv(sub_name, flags);
8990e307
LW
2570}
2571
954c1994
GS
2572/*
2573=for apidoc p||call_pv
2574
2575Performs a callback to the specified Perl sub. See L<perlcall>.
2576
2577=cut
2578*/
2579
a0d0e21e 2580I32
864dbfa3 2581Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2582 /* name of the subroutine */
2583 /* See G_* flags in cop.h */
a0d0e21e 2584{
7918f24d
NC
2585 PERL_ARGS_ASSERT_CALL_PV;
2586
0da0e728 2587 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2588}
2589
954c1994
GS
2590/*
2591=for apidoc p||call_method
2592
2593Performs a callback to the specified Perl method. The blessed object must
2594be on the stack. See L<perlcall>.
2595
2596=cut
2597*/
2598
a0d0e21e 2599I32
864dbfa3 2600Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2601 /* name of the subroutine */
2602 /* See G_* flags in cop.h */
a0d0e21e 2603{
46ca9bac 2604 STRLEN len;
7918f24d
NC
2605 PERL_ARGS_ASSERT_CALL_METHOD;
2606
46ca9bac 2607 len = strlen(methname);
2608
2609 /* XXX: sv_2mortal(newSVpvn_share(methname, len)) can be faster */
2610 return call_sv(newSVpvn_flags(methname, len, SVs_TEMP), flags | G_METHOD);
a0d0e21e
LW
2611}
2612
2613/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2614/*
2615=for apidoc p||call_sv
2616
2617Performs a callback to the Perl sub whose name is in the SV. See
2618L<perlcall>.
2619
2620=cut
2621*/
2622
a0d0e21e 2623I32
001d637e 2624Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2625 /* See G_* flags in cop.h */
a0d0e21e 2626{
27da23d5 2627 dVAR; dSP;
a0d0e21e 2628 LOGOP myop; /* fake syntax tree node */
968b3946 2629 UNOP method_op;
aa689395 2630 I32 oldmark;
8ea43dc8 2631 VOL I32 retval = 0;
a0d0e21e 2632 I32 oldscope;
54310121 2633 bool oldcatch = CATCH_GET;
6224f72b 2634 int ret;
c4420975 2635 OP* const oldop = PL_op;
db36c5a1 2636 dJMPENV;
1e422769 2637
7918f24d
NC
2638 PERL_ARGS_ASSERT_CALL_SV;
2639
a0d0e21e
LW
2640 if (flags & G_DISCARD) {
2641 ENTER;
2642 SAVETMPS;
2643 }
2f8edad0
NC
2644 if (!(flags & G_WANT)) {
2645 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2646 */
2647 flags |= G_SCALAR;
2648 }
a0d0e21e 2649
aa689395 2650 Zero(&myop, 1, LOGOP);
5f66b61c 2651 myop.op_next = NULL;
f51d4af5 2652 if (!(flags & G_NOARGS))
aa689395 2653 myop.op_flags |= OPf_STACKED;
4f911530 2654 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2655 SAVEOP();
533c011a 2656 PL_op = (OP*)&myop;
aa689395 2657
3280af22
NIS
2658 EXTEND(PL_stack_sp, 1);
2659 *++PL_stack_sp = sv;
aa689395 2660 oldmark = TOPMARK;
3280af22 2661 oldscope = PL_scopestack_ix;
a0d0e21e 2662
3280af22 2663 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2664 /* Handle first BEGIN of -d. */
3280af22 2665 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2666 /* Try harder, since this may have been a sighandler, thus
2667 * curstash may be meaningless. */
ea726b52 2668 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2669 && !(flags & G_NODEBUG))
533c011a 2670 PL_op->op_private |= OPpENTERSUB_DB;
a0d0e21e 2671
968b3946
GS
2672 if (flags & G_METHOD) {
2673 Zero(&method_op, 1, UNOP);
2674 method_op.op_next = PL_op;
2675 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
377b1098 2676 method_op.op_type = OP_METHOD;
968b3946 2677 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
377b1098 2678 myop.op_type = OP_ENTERSUB;
f39d0b86 2679 PL_op = (OP*)&method_op;
968b3946
GS
2680 }
2681
312caa8e 2682 if (!(flags & G_EVAL)) {
0cdb2077 2683 CATCH_SET(TRUE);
d6f07c05 2684 CALL_BODY_SUB((OP*)&myop);
312caa8e 2685 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2686 CATCH_SET(oldcatch);
312caa8e
CS
2687 }
2688 else {
d78bda3d 2689 myop.op_other = (OP*)&myop;
3280af22 2690 PL_markstack_ptr--;
edb2152a 2691 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2692 PL_markstack_ptr++;
a0d0e21e 2693
14dd3ad8 2694 JMPENV_PUSH(ret);
edb2152a 2695
6224f72b
GS
2696 switch (ret) {
2697 case 0:
14dd3ad8 2698 redo_body:
d6f07c05 2699 CALL_BODY_SUB((OP*)&myop);
312caa8e 2700 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2701 if (!(flags & G_KEEPERR)) {
ab69dbc2 2702 CLEAR_ERRSV();
8433848b 2703 }
a0d0e21e 2704 break;
6224f72b 2705 case 1:
f86702cc 2706 STATUS_ALL_FAILURE;
a0d0e21e 2707 /* FALL THROUGH */
6224f72b 2708 case 2:
a0d0e21e 2709 /* my_exit() was called */
03d9f026 2710 SET_CURSTASH(PL_defstash);
a0d0e21e 2711 FREETMPS;
14dd3ad8 2712 JMPENV_POP;
f86702cc 2713 my_exit_jump();
a0d0e21e 2714 /* NOTREACHED */
6224f72b 2715 case 3:
3280af22 2716 if (PL_restartop) {
febb3a6d 2717 PL_restartjmpenv = NULL;
533c011a 2718 PL_op = PL_restartop;
3280af22 2719 PL_restartop = 0;
312caa8e 2720 goto redo_body;
a0d0e21e 2721 }
3280af22 2722 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2723 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2724 retval = 0;
2725 else {
2726 retval = 1;
3280af22 2727 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2728 }
312caa8e 2729 break;
a0d0e21e 2730 }
a0d0e21e 2731
edb2152a
NC
2732 if (PL_scopestack_ix > oldscope)
2733 delete_eval_scope();
14dd3ad8 2734 JMPENV_POP;
a0d0e21e 2735 }
1e422769 2736
a0d0e21e 2737 if (flags & G_DISCARD) {
3280af22 2738 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2739 retval = 0;
2740 FREETMPS;
2741 LEAVE;
2742 }
533c011a 2743 PL_op = oldop;
a0d0e21e
LW
2744 return retval;
2745}
2746
6e72f9df 2747/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2748
954c1994
GS
2749/*
2750=for apidoc p||eval_sv
2751
be064c4a
DM
2752Tells Perl to C<eval> the string in the SV. It supports the same flags
2753as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2754
2755=cut
2756*/
2757
a0d0e21e 2758I32
864dbfa3 2759Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2760
8ac85365 2761 /* See G_* flags in cop.h */
a0d0e21e 2762{
97aff369 2763 dVAR;
924508f0 2764 dSP;
a0d0e21e 2765 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2766 VOL I32 oldmark = SP - PL_stack_base;
2767 VOL I32 retval = 0;
6224f72b 2768 int ret;
c4420975 2769 OP* const oldop = PL_op;
db36c5a1 2770 dJMPENV;
84902520 2771
7918f24d
NC
2772 PERL_ARGS_ASSERT_EVAL_SV;
2773
4633a7c4
LW
2774 if (flags & G_DISCARD) {
2775 ENTER;
2776 SAVETMPS;
2777 }
2778
462e5cf6 2779 SAVEOP();
533c011a
NIS
2780 PL_op = (OP*)&myop;
2781 Zero(PL_op, 1, UNOP);
3280af22
NIS
2782 EXTEND(PL_stack_sp, 1);
2783 *++PL_stack_sp = sv;
79072805 2784
4633a7c4
LW
2785 if (!(flags & G_NOARGS))
2786 myop.op_flags = OPf_STACKED;
5f66b61c 2787 myop.op_next = NULL;
6e72f9df 2788 myop.op_type = OP_ENTEREVAL;
4f911530 2789 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2790 if (flags & G_KEEPERR)
2791 myop.op_flags |= OPf_SPECIAL;
4633a7c4 2792
dedbcade
DM
2793 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2794 * before a PUSHEVAL, which corrupts the stack after a croak */
2795 TAINT_PROPER("eval_sv()");
2796
14dd3ad8 2797 JMPENV_PUSH(ret);
6224f72b
GS
2798 switch (ret) {
2799 case 0:
14dd3ad8 2800 redo_body:
2ba65d5f
DM
2801 if (PL_op == (OP*)(&myop)) {
2802 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2803 if (!PL_op)
2804 goto fail; /* failed in compilation */
2805 }
4aca2f62 2806 CALLRUNOPS(aTHX);
312caa8e 2807 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2808 if (!(flags & G_KEEPERR)) {
ab69dbc2 2809 CLEAR_ERRSV();
8433848b 2810 }
4633a7c4 2811 break;
6224f72b 2812 case 1:
f86702cc 2813 STATUS_ALL_FAILURE;
4633a7c4 2814 /* FALL THROUGH */
6224f72b 2815 case 2:
4633a7c4 2816 /* my_exit() was called */
03d9f026 2817 SET_CURSTASH(PL_defstash);
4633a7c4 2818 FREETMPS;
14dd3ad8 2819 JMPENV_POP;
f86702cc 2820 my_exit_jump();
4633a7c4 2821 /* NOTREACHED */
6224f72b 2822 case 3:
3280af22 2823 if (PL_restartop) {
febb3a6d 2824 PL_restartjmpenv = NULL;
533c011a 2825 PL_op = PL_restartop;
3280af22 2826 PL_restartop = 0;
312caa8e 2827 goto redo_body;
4633a7c4 2828 }
4aca2f62 2829 fail:
3280af22 2830 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2831 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2832 retval = 0;
2833 else {
2834 retval = 1;
3280af22 2835 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2836 }
312caa8e 2837 break;
4633a7c4
LW
2838 }
2839
14dd3ad8 2840 JMPENV_POP;
4633a7c4 2841 if (flags & G_DISCARD) {
3280af22 2842 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2843 retval = 0;
2844 FREETMPS;
2845 LEAVE;
2846 }
533c011a 2847 PL_op = oldop;
4633a7c4
LW
2848 return retval;
2849}
2850
954c1994
GS
2851/*
2852=for apidoc p||eval_pv
2853
2854Tells Perl to C<eval> the given string and return an SV* result.
2855
2856=cut
2857*/
2858
137443ea 2859SV*
864dbfa3 2860Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2861{
97aff369 2862 dVAR;
137443ea
PP
2863 dSP;
2864 SV* sv = newSVpv(p, 0);
2865
7918f24d
NC
2866 PERL_ARGS_ASSERT_EVAL_PV;
2867
864dbfa3 2868 eval_sv(sv, G_SCALAR);
137443ea
PP
2869 SvREFCNT_dec(sv);
2870
2871 SPAGAIN;
2872 sv = POPs;
2873 PUTBACK;
2874
2d8e6c8d 2875 if (croak_on_error && SvTRUE(ERRSV)) {
f1f66076 2876 Perl_croak(aTHX_ "%s", SvPVx_nolen_const(ERRSV));
2d8e6c8d 2877 }
137443ea
PP
2878
2879 return sv;
2880}
2881
4633a7c4
LW
2882/* Require a module. */
2883
954c1994 2884/*
ccfc67b7
JH
2885=head1 Embedding Functions
2886
954c1994
GS
2887=for apidoc p||require_pv
2888
7d3fb230
BS
2889Tells Perl to C<require> the file named by the string argument. It is
2890analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2891implemented that way; consider using load_module instead.
954c1994 2892
7d3fb230 2893=cut */
954c1994 2894
4633a7c4 2895void
864dbfa3 2896Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2897{
97aff369 2898 dVAR;
d3acc0f7 2899 dSP;
97aff369 2900 SV* sv;
7918f24d
NC
2901
2902 PERL_ARGS_ASSERT_REQUIRE_PV;
2903
e788e7d3 2904 PUSHSTACKi(PERLSI_REQUIRE);
d3acc0f7 2905 PUTBACK;
be41e5d9
NC
2906 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2907 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7
JP
2908 SPAGAIN;
2909 POPSTACK;
79072805
LW
2910}
2911
76e3520e 2912STATIC void
b6f82619 2913S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2914{
ab821d7f 2915 /* This message really ought to be max 23 lines.
75c72d73 2916 * Removed -h because the user already knows that option. Others? */
fb73857a 2917
1566c39d
NC
2918 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2919 minimum of 509 character string literals. */
27da23d5 2920 static const char * const usage_msg[] = {
1566c39d
NC
2921" -0[octal] specify record separator (\\0, if no argument)\n"
2922" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2923" -C[number/list] enables the listed Unicode features\n"
2924" -c check syntax only (runs BEGIN and CHECK blocks)\n"
2925" -d[:debugger] run program under debugger\n"
2926" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
2927" -e program one line of program (several -e's allowed, omit programfile)\n"
2928" -E program like -e, but enables all optional features\n"
2929" -f don't do $sitelib/sitecustomize.pl at startup\n"
2930" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
2931" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
2932" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
2933" -l[octal] enable line ending processing, specifies line terminator\n"
2934" -[mM][-]module execute \"use/no module...\" before executing program\n"
2935" -n assume \"while (<>) { ... }\" loop around program\n"
2936" -p assume loop like -n but print line also, like sed\n"
2937" -s enable rudimentary parsing for switches after programfile\n"
2938" -S look for programfile using PATH environment variable\n",
2939" -t enable tainting warnings\n"
2940" -T enable tainting checks\n"
2941" -u dump core after parsing program\n"
2942" -U allow unsafe operations\n"
2943" -v print version, patchlevel and license\n"
2944" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 2945" -w enable many useful warnings\n"
1566c39d
NC
2946" -W enable all warnings\n"
2947" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
2948" -X disable all warnings\n"
2949" \n"
2950"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
2951NULL
2952};
27da23d5 2953 const char * const *p = usage_msg;
1566c39d 2954 PerlIO *out = PerlIO_stdout();
fb73857a 2955
1566c39d
NC
2956 PerlIO_printf(out,
2957 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 2958 PL_origargv[0]);
fb73857a 2959 while (*p)
1566c39d 2960 PerlIO_puts(out, *p++);
b6f82619 2961 my_exit(0);
4633a7c4
LW
2962}
2963
b4ab917c
DM
2964/* convert a string of -D options (or digits) into an int.
2965 * sets *s to point to the char after the options */
2966
2967#ifdef DEBUGGING
2968int
e1ec3a88 2969Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 2970{
27da23d5 2971 static const char * const usage_msgd[] = {
651b8f1a
NC
2972 " Debugging flag values: (see also -d)\n"
2973 " p Tokenizing and parsing (with v, displays parse stack)\n"
2974 " s Stack snapshots (with v, displays all stacks)\n"
2975 " l Context (loop) stack processing\n"
2976 " t Trace execution\n"
2977 " o Method and overloading resolution\n",
2978 " c String/numeric conversions\n"
2979 " P Print profiling info, source file input state\n"
2980 " m Memory and SV allocation\n"
2981 " f Format processing\n"
2982 " r Regular expression parsing and execution\n"
2983 " x Syntax tree dump\n",
2984 " u Tainting checks\n"
2985 " H Hash dump -- usurps values()\n"
2986 " X Scratchpad allocation\n"
2987 " D Cleaning up\n"
2988 " T Tokenising\n"
2989 " R Include reference counts of dumped variables (eg when using -Ds)\n",
2990 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
2991 " v Verbose: use in conjunction with other flags\n"
2992 " C Copy On Write\n"
2993 " A Consistency checks on internal structures\n"
2994 " q quiet - currently only suppresses the 'EXECUTING' message\n"
2995 " M trace smart match resolution\n"
2996 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
e6e64d9b
JC
2997 NULL
2998 };
b4ab917c 2999 int i = 0;
7918f24d
NC
3000
3001 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3002
b4ab917c
DM
3003 if (isALPHA(**s)) {
3004 /* if adding extra options, remember to update DEBUG_MASK */
cc8773c0 3005 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMB";
b4ab917c
DM
3006
3007 for (; isALNUM(**s); (*s)++) {
c4420975 3008 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3009 if (d)
3010 i |= 1 << (d - debopts);
3011 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3012 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3013 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3014 }
3015 }
e6e64d9b 3016 else if (isDIGIT(**s)) {
b4ab917c
DM
3017 i = atoi(*s);
3018 for (; isALNUM(**s); (*s)++) ;
3019 }
ddcf8bc1 3020 else if (givehelp) {
06e869a4 3021 const char *const *p = usage_msgd;
651b8f1a 3022 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3023 }
b4ab917c
DM
3024# ifdef EBCDIC
3025 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3026 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3027 "-Dp not implemented on this platform\n");
3028# endif
3029 return i;
3030}
3031#endif
3032
79072805
LW
3033/* This routine handles any switches that can be given during run */
3034
c7030b81
NC
3035const char *
3036Perl_moreswitches(pTHX_ const char *s)
79072805 3037{
27da23d5 3038 dVAR;
84c133a0 3039 UV rschar;
0544e6df 3040 const char option = *s; /* used to remember option in -m/-M code */
79072805 3041
7918f24d
NC
3042 PERL_ARGS_ASSERT_MORESWITCHES;
3043
79072805
LW
3044 switch (*s) {
3045 case '0':
a863c7d1 3046 {
f2095865 3047 I32 flags = 0;
a3b680e6 3048 STRLEN numlen;
f2095865
JH
3049
3050 SvREFCNT_dec(PL_rs);
3051 if (s[1] == 'x' && s[2]) {
a3b680e6 3052 const char *e = s+=2;
f2095865
JH
3053 U8 *tmps;
3054
a3b680e6
AL
3055 while (*e)
3056 e++;
f2095865
JH
3057 numlen = e - s;
3058 flags = PERL_SCAN_SILENT_ILLDIGIT;
3059 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3060 if (s + numlen < e) {
3061 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3062 numlen = 0;
3063 s--;
3064 }
396482e1 3065 PL_rs = newSVpvs("");
c5661c80 3066 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3067 tmps = (U8*)SvPVX(PL_rs);
3068 uvchr_to_utf8(tmps, rschar);
3069 SvCUR_set(PL_rs, UNISKIP(rschar));
3070 SvUTF8_on(PL_rs);
3071 }
3072 else {
3073 numlen = 4;
3074 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3075 if (rschar & ~((U8)~0))
3076 PL_rs = &PL_sv_undef;
3077 else if (!rschar && numlen >= 2)
396482e1 3078 PL_rs = newSVpvs("");
f2095865
JH
3079 else {
3080 char ch = (char)rschar;
3081 PL_rs = newSVpvn(&ch, 1);
3082 }
3083 }
64ace3f8 3084 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3085 return s + numlen;
a863c7d1 3086 }
46487f74 3087 case 'C':
a05d7ebb 3088 s++;
dd374669 3089 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3090 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3091 PL_utf8cache = -1;
46487f74 3092 return s;
2304df62 3093 case 'F':
3280af22 3094 PL_minus_F = TRUE;
ebce5377
RGS
3095 PL_splitstr = ++s;
3096 while (*s && !isSPACE(*s)) ++s;
e49e380e 3097 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3098 return s;
79072805 3099 case 'a':
3280af22 3100 PL_minus_a = TRUE;
79072805
LW
3101 s++;
3102 return s;
3103 case 'c':
3280af22 3104 PL_minus_c = TRUE;
79072805
LW
3105 s++;
3106 return s;
3107 case 'd':
f20b2998 3108 forbid_setid('d', FALSE);
4633a7c4 3109 s++;
2cbb2ee1
RGS
3110
3111 /* -dt indicates to the debugger that threads will be used */
3112 if (*s == 't' && !isALNUM(s[1])) {
3113 ++s;
3114 my_setenv("PERL5DB_THREADED", "1");
3115 }
3116
70c94a19
RR
3117 /* The following permits -d:Mod to accepts arguments following an =
3118 in the fashion that -MSome::Mod does. */
3119 if (*s == ':' || *s == '=') {
b19934fb
NC
3120 const char *start;
3121 const char *end;
3122 SV *sv;
3123
3124 if (*++s == '-') {
3125 ++s;
3126 sv = newSVpvs("no Devel::");
3127 } else {
3128 sv = newSVpvs("use Devel::");
3129 }
3130
3131 start = s;
3132 end = s + strlen(s);
f85893a1 3133
b19934fb 3134 /* We now allow -d:Module=Foo,Bar and -d:-Module */
70c94a19
RR
3135 while(isALNUM(*s) || *s==':') ++s;
3136 if (*s != '=')
f85893a1 3137 sv_catpvn(sv, start, end - start);
70c94a19
RR
3138 else {
3139 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3140 /* Don't use NUL as q// delimiter here, this string goes in the
3141 * environment. */
3142 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3143 }
f85893a1 3144 s = end;
184f32ec 3145 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3146 SvREFCNT_dec(sv);
4633a7c4 3147 }
ed094faf 3148 if (!PL_perldb) {
3280af22 3149 PL_perldb = PERLDB_ALL;
a0d0e21e 3150 init_debugger();
ed094faf 3151 }
79072805
LW
3152 return s;
3153 case 'D':
0453d815 3154 {
79072805 3155#ifdef DEBUGGING
f20b2998 3156 forbid_setid('D', FALSE);
b4ab917c 3157 s++;
dd374669 3158 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3159#else /* !DEBUGGING */
0453d815 3160 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3161 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3162 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
a0d0e21e 3163 for (s++; isALNUM(*s); s++) ;
79072805 3164#endif
79072805 3165 return s;
0453d815 3166 }
4633a7c4 3167 case 'h':
b6f82619 3168 usage();
79072805 3169 case 'i':
43c5f42d 3170 Safefree(PL_inplace);
c030f24b
GH
3171#if defined(__CYGWIN__) /* do backup extension automagically */
3172 if (*(s+1) == '\0') {
c86a4f2e 3173 PL_inplace = savepvs(".bak");
c030f24b
GH
3174 return s+1;
3175 }
3176#endif /* __CYGWIN__ */
5ef5d758 3177 {
d4c19fe8 3178 const char * const start = ++s;
5ef5d758
NC
3179 while (*s && !isSPACE(*s))
3180 ++s;
3181
3182 PL_inplace = savepvn(start, s - start);
3183 }
7b8d334a 3184 if (*s) {
5ef5d758 3185 ++s;
7b8d334a 3186 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3187 s++;
7b8d334a 3188 }
fb73857a 3189 return s;
4e49a025 3190 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3191 forbid_setid('I', FALSE);
fb73857a
PP
3192 ++s;
3193 while (*s && isSPACE(*s))
3194 ++s;
3195 if (*s) {
c7030b81 3196 const char *e, *p;
0df16ed7
GS
3197 p = s;
3198 /* ignore trailing spaces (possibly followed by other switches) */
3199 do {
3200 for (e = p; *e && !isSPACE(*e); e++) ;
3201 p = e;
3202 while (isSPACE(*p))
3203 p++;
3204 } while (*p && *p != '-');
55b4bc1c 3205 incpush(s, e-s,
e28f3139 3206 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3207 s = p;
3208 if (*s == '-')
3209 s++;
79072805
LW
3210 }
3211 else
a67e862a 3212 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3213 return s;
79072805 3214 case 'l':
3280af22 3215 PL_minus_l = TRUE;
79072805 3216 s++;
7889fe52
NIS
3217 if (PL_ors_sv) {
3218 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3219 PL_ors_sv = NULL;
7889fe52 3220 }
79072805 3221 if (isDIGIT(*s)) {
53305cf1 3222 I32 flags = 0;
a3b680e6 3223 STRLEN numlen;
396482e1 3224 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3225 numlen = 3 + (*s == '0');
3226 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3227 s += numlen;
3228 }
3229 else {
8bfdd7d9 3230 if (RsPARA(PL_rs)) {
396482e1 3231 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3232 }
3233 else {
8bfdd7d9 3234 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3235 }
79072805
LW
3236 }
3237 return s;
1a30305b 3238 case 'M':
f20b2998 3239 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3240 /* FALL THROUGH */
3241 case 'm':
f20b2998 3242 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3243 if (*++s) {
c7030b81 3244 const char *start;
b64cb68c 3245 const char *end;
11343788 3246 SV *sv;
e1ec3a88 3247 const char *use = "use ";
0544e6df 3248 bool colon = FALSE;
a5f75d66 3249 /* -M-foo == 'no foo' */
d0043bd1
NC
3250 /* Leading space on " no " is deliberate, to make both
3251 possibilities the same length. */
3252 if (*s == '-') { use = " no "; ++s; }
3253 sv = newSVpvn(use,4);
a5f75d66 3254 start = s;
1a30305b 3255 /* We allow -M'Module qw(Foo Bar)' */
0544e6df
RB
3256 while(isALNUM(*s) || *s==':') {
3257 if( *s++ == ':' ) {
3258 if( *s == ':' )
3259 s++;
3260 else
3261 colon = TRUE;
3262 }
3263 }
3264 if (s == start)
3265 Perl_croak(aTHX_ "Module name required with -%c option",
3266 option);
3267 if (colon)
3268 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3269 "contains single ':'",
63da6837 3270 (int)(s - start), start, option);
b64cb68c 3271 end = s + strlen(s);
c07a80fd 3272 if (*s != '=') {
b64cb68c 3273 sv_catpvn(sv, start, end - start);
0544e6df 3274 if (option == 'm') {
c07a80fd 3275 if (*s != '\0')
cea2e8a9 3276 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3277 sv_catpvs( sv, " ()");
c07a80fd
PP
3278 }
3279 } else {
11343788 3280 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3281 /* Use NUL as q''-delimiter. */
3282 sv_catpvs(sv, " split(/,/,q\0");
3283 ++s;
3284 sv_catpvn(sv, s, end - s);
396482e1 3285 sv_catpvs(sv, "\0)");
c07a80fd 3286 }
b64cb68c 3287 s = end;
29a861e7 3288 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3289 }
3290 else
0544e6df 3291 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3292 return s;
79072805 3293 case 'n':
3280af22 3294 PL_minus_n = TRUE;
79072805
LW
3295 s++;
3296 return s;
3297 case 'p':
3280af22 3298 PL_minus_p = TRUE;
79072805
LW
3299 s++;
3300 return s;
3301 case 's':
f20b2998 3302 forbid_setid('s', FALSE);
3280af22 3303 PL_doswitches = TRUE;
79072805
LW
3304 s++;
3305 return s;
6537fe72 3306 case 't':
27a6968b 3307 case 'T':
6537fe72 3308 if (!PL_tainting)
27a6968b 3309 TOO_LATE_FOR(*s);
6537fe72 3310 s++;
463ee0b2 3311 return s;
79072805 3312 case 'u':
3280af22 3313 PL_do_undump = TRUE;
79072805
LW
3314 s++;
3315 return s;
3316 case 'U':
3280af22 3317 PL_unsafe = TRUE;
79072805
LW
3318 s++;
3319 return s;
3320 case 'v':
c4bc78d9
NC
3321 minus_v();
3322 case 'w':
3323 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3324 PL_dowarn |= G_WARN_ON;
3325 }
3326 s++;
3327 return s;
3328 case 'W':
3329 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3330 if (!specialWARN(PL_compiling.cop_warnings))
3331 PerlMemShared_free(PL_compiling.cop_warnings);
3332 PL_compiling.cop_warnings = pWARN_ALL ;
3333 s++;
3334 return s;
3335 case 'X':
3336 PL_dowarn = G_WARN_ALL_OFF;
3337 if (!specialWARN(PL_compiling.cop_warnings))
3338 PerlMemShared_free(PL_compiling.cop_warnings);
3339 PL_compiling.cop_warnings = pWARN_NONE ;
3340 s++;
3341 return s;
3342 case '*':
3343 case ' ':
3344 while( *s == ' ' )
3345 ++s;
3346 if (s[0] == '-') /* Additional switches on #! line. */
3347 return s+1;
3348 break;
3349 case '-':
3350 case 0:
3351#if defined(WIN32) || !defined(PERL_STRICT_CR)
3352 case '\r':
3353#endif
3354 case '\n':
3355 case '\t':
3356 break;
3357#ifdef ALTERNATE_SHEBANG
3358 case 'S': /* OS/2 needs -S on "extproc" line. */
3359 break;
3360#endif
4bb78d63
CB
3361 case 'e': case 'f': case 'x': case 'E':
3362#ifndef ALTERNATE_SHEBANG
3363 case 'S':
3364#endif
3365 case 'V':
c4bc78d9 3366 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3367 default:
3368 Perl_croak(aTHX_
3369 "Unrecognized switch: -%.1s (-h will show valid options)",s
3370 );
c4bc78d9
NC
3371 }
3372 return NULL;
3373}
3374
3375
3376STATIC void
3377S_minus_v(pTHX)
3378{
d7aa5382 3379 if (!sv_derived_from(PL_patchlevel, "version"))
ac0e6a2f 3380 upg_version(PL_patchlevel, TRUE);
8e9464f1 3381#if !defined(DGUX)
46807d8e
YO
3382 {
3383 SV* level= vstringify(PL_patchlevel);
3384#ifdef PERL_PATCHNUM
23d483e2
NC
3385# ifdef PERL_GIT_UNCOMMITTED_CHANGES
3386 SV *num = newSVpvs(PERL_PATCHNUM "*");
3387# else
3388 SV *num = newSVpvs(PERL_PATCHNUM);
3389# endif
46807d8e
YO
3390
3391 if (sv_len(num)>=sv_len(level) && strnEQ(SvPV_nolen(num),SvPV_nolen(level),sv_len(level))) {
3392 SvREFCNT_dec(level);
3393 level= num;
3394 } else {
d0a9311f 3395 Perl_sv_catpvf(aTHX_ level, " (%"SVf")", num);
46807d8e
YO
3396 SvREFCNT_dec(num);
3397 }
3398 #endif
3399 PerlIO_printf(PerlIO_stdout(),
ded326e4
DG
3400 "\nThis is perl " STRINGIFY(PERL_REVISION)
3401 ", version " STRINGIFY(PERL_VERSION)
3402 ", subversion " STRINGIFY(PERL_SUBVERSION)
3403 " (%"SVf") built for " ARCHNAME, level
3404 );
46807d8e
YO
3405 SvREFCNT_dec(level);
3406 }
8e9464f1
JH
3407#else /* DGUX */
3408/* Adjust verbose output as in the perl that ships with the DG/UX OS from EMC */
3409 PerlIO_printf(PerlIO_stdout(),
52ea0aec 3410 Perl_form(aTHX_ "\nThis is perl, %"SVf"\n",
be2597df 3411 SVfARG(vstringify(PL_patchlevel))));
8e9464f1
JH
3412 PerlIO_printf(PerlIO_stdout(),
3413 Perl_form(aTHX_ " built under %s at %s %s\n",
3414 OSNAME, __DATE__, __TIME__));
3415 PerlIO_printf(PerlIO_stdout(),
3416 Perl_form(aTHX_ " OS Specific Release: %s\n",
40a39f85 3417 OSVERS));
8e9464f1 3418#endif /* !DGUX */
fb73857a
PP
3419#if defined(LOCAL_PATCH_COUNT)
3420 if (LOCAL_PATCH_COUNT > 0)
b0e47665
GS
3421 PerlIO_printf(PerlIO_stdout(),
3422 "\n(with %d registered patch%s, "
3423 "see perl -V for more detail)",
bb7a0f54 3424 LOCAL_PATCH_COUNT,
b0e47665 3425 (LOCAL_PATCH_COUNT!=1) ? "es" : "");
a5f75d66 3426#endif
1a30305b 3427
b0e47665 3428 PerlIO_printf(PerlIO_stdout(),
fdfb76e4 3429 "\n\nCopyright 1987-2012, Larry Wall\n");
79072805 3430#ifdef MSDOS
b0e47665
GS
3431 PerlIO_printf(PerlIO_stdout(),
3432 "\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
55497cff
PP
3433#endif
3434#ifdef DJGPP
b0e47665
GS
3435 PerlIO_printf(PerlIO_stdout(),
3436 "djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n"
3437 "djgpp v2 port (perl5004+) by Laszlo Molnar, 1997-1999\n");
4633a7c4 3438#endif
79072805 3439#ifdef OS2
b0e47665
GS
3440 PerlIO_printf(PerlIO_stdout(),
3441 "\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
be3c0a43 3442 "Version 5 port Copyright (c) 1994-2002, Andreas Kaiser, Ilya Zakharevich\n");
79072805 3443#endif
79072805 3444#ifdef atarist
b0e47665
GS
3445 PerlIO_printf(PerlIO_stdout(),
3446 "atariST series port, ++jrb bammi@cadence.com\n");
79072805 3447#endif
a3f9223b 3448#ifdef __BEOS__
b0e47665
GS
3449 PerlIO_printf(PerlIO_stdout(),
3450 "BeOS port Copyright Tom Spindler, 1997-1999\n");
a3f9223b 3451#endif
1d84e8df 3452#ifdef MPE
b0e47665 3453 PerlIO_printf(PerlIO_stdout(),
e583a879 3454 "MPE/iX port Copyright by Mark Klein and Mark Bixby, 1996-2003\n");
1d84e8df 3455#endif
9d116dd7 3456#ifdef OEMVS
b0e47665
GS
3457 PerlIO_printf(PerlIO_stdout(),
3458 "MVS (OS390) port by Mortice Kern Systems, 1997-1999\n");
9d116dd7 3459#endif
495c5fdc 3460#ifdef __VOS__
b0e47665 3461 PerlIO_printf(PerlIO_stdout(),
94efb9fb 3462 "Stratus VOS port by Paul.Green@stratus.com, 1997-2002\n");
495c5fdc 3463#endif
092bebab 3464#ifdef __OPEN_VM
b0e47665
GS
3465 PerlIO_printf(PerlIO_stdout(),
3466 "VM/ESA port by Neale Ferguson, 1998-1999\n");
092bebab 3467#endif
a1a0e61e 3468#ifdef POSIX_BC
b0e47665
GS
3469 PerlIO_printf(PerlIO_stdout(),
3470 "BS2000 (POSIX) port by Start Amadeus GmbH, 1998-1999\n");
a1a0e61e 3471#endif
f83d2536 3472#ifdef EPOC
b0e47665 3473 PerlIO_printf(PerlIO_stdout(),
be3c0a43 3474 "EPOC port by Olaf Flebbe, 1999-2002\n");
f83d2536 3475#endif
e1caacb4 3476#ifdef UNDER_CE
b475b3e6
JH
3477 PerlIO_printf(PerlIO_stdout(),"WINCE port by Rainer Keuchel, 2001-2002\n");
3478 PerlIO_printf(PerlIO_stdout(),"Built on " __DATE__ " " __TIME__ "\n\n");
e1caacb4
JH
3479 wce_hitreturn();
3480#endif
a0fd4948 3481#ifdef __SYMBIAN32__
27da23d5
JH
3482 PerlIO_printf(PerlIO_stdout(),
3483 "Symbian port by Nokia, 2004-2005\n");
3484#endif
baed7233
DL
3485#ifdef BINARY_BUILD_NOTICE
3486 BINARY_BUILD_NOTICE;
3487#endif
b0e47665
GS
3488 PerlIO_printf(PerlIO_stdout(),
3489 "\n\
79072805 3490Perl may be copied only under the terms of either the Artistic License or the\n\
3d6f292d 3491GNU General Public License, which may be found in the Perl 5 source kit.\n\n\
95103687 3492Complete documentation for Perl, including FAQ lists, should be found on\n\
a0288114 3493this system using \"man perl\" or \"perldoc perl\". If you have access to the\n\
c9e30dd8 3494Internet, point your browser at http://www.perl.org/, the Perl Home Page.\n\n");
7ca617d0 3495 my_exit(0);
79072805
LW
3496}
3497
3498/* compliments of Tom Christiansen */
3499
3500/* unexec() can be found in the Gnu emacs distribution */
ee580363 3501/* Known to work with -DUNEXEC and using unexelf.c from GNU emacs-20.2 */
79072805
LW
3502
3503void
864dbfa3 3504Perl_my_unexec(pTHX)
79072805 3505{
b37c2d43 3506 PERL_UNUSED_CONTEXT;
79072805 3507#ifdef UNEXEC
b37c2d43
AL
3508 SV * prog = newSVpv(BIN_EXP, 0);
3509 SV * file = newSVpv(PL_origfilename, 0);
ee580363 3510 int status = 1;
79072805
LW
3511 extern int etext;
3512
396482e1 3513 sv_catpvs(prog, "/perl");
396482e1 3514 sv_catpvs(file, ".perldump");
79072805 3515
ee580363
GS
3516 unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0);
3517 /* unexec prints msg to stderr in case of failure */
6ad3d225 3518 PerlProc_exit(status);