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pp_multideref: tweak an assertion
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW		 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
f3e2e262 6 * 2013, 2014, 2015, 2016, 2017 by Larry Wall and others
a687059c 7 *
352d5a3a
LW		 8 * You may distribute under the terms of either the GNU General Public
9 * License or the Artistic License, as specified in the README file.
a687059c 10 *
8d063cd8
LW		 11 */
12
a0d0e21e 13/*
4ac71550
TC		 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
TC		 17 *
18 * [p.236 of _The Lord of the Rings_, II/i: "Many Meetings"]
a0d0e21e 19 */
45d8adaa 20
166f8a29
DM		 21/* This file contains the top-level functions that are used to create, use
22 * and destroy a perl interpreter, plus the functions used by XS code to
23 * call back into perl. Note that it does not contain the actual main()
ddfa107c 24 * function of the interpreter; that can be found in perlmain.c
a1b69980
DM		 25 *
26 * Note that at build time this file is also linked to as perlmini.c,
27 * and perlmini.o is then built with PERL_IS_MINIPERL defined, which is
28 * then used to create the miniperl executable, rather than perl.o.
166f8a29
DM		 29 */
30
c44493f1 31#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC		 32# define USE_SITECUSTOMIZE
33#endif
34
378cc40b 35#include "EXTERN.h"
864dbfa3 36#define PERL_IN_PERL_C
378cc40b 37#include "perl.h"
e3321bb0 38#include "patchlevel.h" /* for local_patches */
4a5df386 39#include "XSUB.h"
378cc40b 40
011f1a1a
JH		 41#ifdef NETWARE
42#include "nwutil.h"
011f1a1a
JH		 43#endif
44
2aa47728 45#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC		 46# ifdef I_SYSUIO
47# include <sys/uio.h>
48# endif
49
50union control_un {
51 struct cmsghdr cm;
52 char control[CMSG_SPACE(sizeof(int))];
53};
54
2aa47728
NC		 55#endif
56
5311654c
JH		 57#ifndef HZ
58# ifdef CLK_TCK
59# define HZ CLK_TCK
60# else
61# define HZ 60
62# endif
63#endif
64
7114a2d2 65#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 66char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP		 67#endif
68
acfe0abc 69static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 70
cc69b689 71#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 72# define validate_suid(rsfp) NOOP
cc69b689 73#else
b24bc095 74# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 75#endif
8d063cd8 76
d6f07c05
AL		 77#define CALL_BODY_SUB(myop) \
78 if (PL_op == (myop)) \
139d0ce6 79 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL		 80 if (PL_op) \
81 CALLRUNOPS(aTHX);
82
83#define CALL_LIST_BODY(cv) \
84 PUSHMARK(PL_stack_sp); \
9a8aa25b 85 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 86
e6827a76 87static void
daa7d858 88S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 89{
27da23d5 90 dVAR;
e6827a76
NC		 91 if (!PL_curinterp) {
92 PERL_SET_INTERP(my_perl);
3db8f154 93#if defined(USE_ITHREADS)
e6827a76
NC		 94 INIT_THREADS;
95 ALLOC_THREAD_KEY;
96 PERL_SET_THX(my_perl);
97 OP_REFCNT_INIT;
e8570548 98 OP_CHECK_MUTEX_INIT;
71ad1b0c 99 HINTS_REFCNT_INIT;
929e1213 100 LOCALE_INIT;
e6827a76 101 MUTEX_INIT(&PL_dollarzero_mutex);
016af4f1
DM		 102 MUTEX_INIT(&PL_my_ctx_mutex);
103# endif
e6827a76 104 }
c0bce9aa
NC		 105#if defined(USE_ITHREADS)
106 else
107#else
108 /* This always happens for non-ithreads */
109#endif
110 {
e6827a76
NC		 111 PERL_SET_THX(my_perl);
112 }
113}
06d86050 114
cbec8ebe
DM		 115
116/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
117
118void
119Perl_sys_init(int* argc, char*** argv)
120{
4fc0badb 121 dVAR;
7918f24d
NC		 122
123 PERL_ARGS_ASSERT_SYS_INIT;
124
cbec8ebe
DM		 125 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
126 PERL_UNUSED_ARG(argv);
127 PERL_SYS_INIT_BODY(argc, argv);
128}
129
130void
131Perl_sys_init3(int* argc, char*** argv, char*** env)
132{
4fc0badb 133 dVAR;
7918f24d
NC		 134
135 PERL_ARGS_ASSERT_SYS_INIT3;
136
cbec8ebe
DM		 137 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
138 PERL_UNUSED_ARG(argv);
139 PERL_UNUSED_ARG(env);
140 PERL_SYS_INIT3_BODY(argc, argv, env);
141}
142
143void
88772978 144Perl_sys_term(void)
cbec8ebe 145{
4fc0badb 146 dVAR;
bf81751b
DM		 147 if (!PL_veto_cleanup) {
148 PERL_SYS_TERM_BODY();
149 }
cbec8ebe
DM		 150}
151
152
32e30700
GS		 153#ifdef PERL_IMPLICIT_SYS
154PerlInterpreter *
7766f137
GS		 155perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
156 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS		 157 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
158 struct IPerlDir* ipD, struct IPerlSock* ipS,
159 struct IPerlProc* ipP)
160{
161 PerlInterpreter *my_perl;
7918f24d
NC		 162
163 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
164
9f653bb5 165 /* Newx() needs interpreter, so call malloc() instead */
32e30700 166 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 167 S_init_tls_and_interp(my_perl);
32e30700
GS		 168 Zero(my_perl, 1, PerlInterpreter);
169 PL_Mem = ipM;
7766f137
GS		 170 PL_MemShared = ipMS;
171 PL_MemParse = ipMP;
32e30700
GS		 172 PL_Env = ipE;
173 PL_StdIO = ipStd;
174 PL_LIO = ipLIO;
175 PL_Dir = ipD;
176 PL_Sock = ipS;
177 PL_Proc = ipP;
7cb608b5 178 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 179
32e30700
GS		 180 return my_perl;
181}
182#else
954c1994
GS		 183
184/*
ccfc67b7
JH		 185=head1 Embedding Functions
186
954c1994
GS		 187=for apidoc perl_alloc
188
189Allocates a new Perl interpreter. See L<perlembed>.
190
191=cut
192*/
193
93a17b20 194PerlInterpreter *
cea2e8a9 195perl_alloc(void)
79072805 196{
cea2e8a9 197 PerlInterpreter *my_perl;
79072805 198
9f653bb5 199 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 200 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 201
e6827a76 202 S_init_tls_and_interp(my_perl);
7cb608b5 203#ifndef PERL_TRACK_MEMPOOL
07409e01 204 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC		 205#else
206 Zero(my_perl, 1, PerlInterpreter);
207 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
208 return my_perl;
209#endif
79072805 210}
32e30700 211#endif /* PERL_IMPLICIT_SYS */
79072805 212
954c1994
GS		 213/*
214=for apidoc perl_construct
215
216Initializes a new Perl interpreter. See L<perlembed>.
217
218=cut
219*/
220
0927ade0 221static void
222S_fixup_platform_bugs(void)
223{
224#if defined(__GLIBC__) && IVSIZE == 8 \
225 && ( __GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 8))
226 {
227 IV l = 3;
228 IV r = -10;
229 /* Cannot do this check with inlined IV constants since
230 * that seems to work correctly even with the buggy glibc. */
231 if (l % r == -3) {
232 dTHX;
233 /* Yikes, we have the bug.
234 * Patch in the workaround version. */
235 PL_ppaddr[OP_I_MODULO] = &Perl_pp_i_modulo_glibc_bugfix;
236 }
237 }
238#endif
239}
240
79072805 241void
0cb96387 242perl_construct(pTHXx)
79072805 243{
27da23d5 244 dVAR;
7918f24d
NC		 245
246 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
247
8990e307 248#ifdef MULTIPLICITY
54aff467 249 init_interp();
ac27b0f5 250 PL_perl_destruct_level = 1;
54aff467 251#else
7918f24d 252 PERL_UNUSED_ARG(my_perl);
54aff467
GS		 253 if (PL_perl_destruct_level > 0)
254 init_interp();
255#endif
34caed6d
DM		 256 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
257
75d476e2
SM		 258#ifdef PERL_TRACE_OPS
259 Zero(PL_op_exec_cnt, OP_max+2, UV);
260#endif
261
0d96b528 262 init_constants();
34caed6d
DM		 263
264 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 265 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM		 266
267 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 268#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 269 PL_pidstatus = newHV();
ca0c25f6 270#endif
79072805 271
396482e1 272 PL_rs = newSVpvs("\n");
dc92893f 273
cea2e8a9 274 init_stacks();
79072805 275
748a9306 276 init_ids();
a5f75d66 277
0927ade0 278 S_fixup_platform_bugs();
279
312caa8e 280 JMPENV_BOOTSTRAP;
f86702cc
PP		 281 STATUS_ALL_SUCCESS;
282
0672f40e 283 init_i18nl10n(1);
0b5b802d 284
ab821d7f 285#if defined(LOCAL_PATCH_COUNT)
3280af22 286 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP		 287#endif
288
52853b95
GS		 289#ifdef HAVE_INTERP_INTERN
290 sys_intern_init();
291#endif
292
3a1ee7e8 293 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 294
3280af22
NIS		 295 PL_fdpid = newAV(); /* for remembering popen pids by fd */
296 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 297 PL_errors = newSVpvs("");
854da30f
YO		 298 SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
299 SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
300 SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
1fcf4c12 301#ifdef USE_ITHREADS
402d2eb1
NC		 302 /* First entry is a list of empty elements. It needs to be initialised
303 else all hell breaks loose in S_find_uninit_var(). */
304 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 305 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 306 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 307#endif
e5dd39fc 308#ifdef USE_REENTRANT_API
59bd0823 309 Perl_reentrant_init(aTHX);
e5dd39fc 310#endif
7dc86639
YO		 311#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
312 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
313 * This MUST be done before any hash stores or fetches take place.
314 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
315 * yourself, it is your responsibility to provide a good random seed!
316 * You can also define PERL_HASH_SEED in compile time, see hv.h.
317 *
318 * XXX: fix this comment */
319 if (PL_hash_seed_set == FALSE) {
320 Perl_get_hash_seed(aTHX_ PL_hash_seed);
321 PL_hash_seed_set= TRUE;
322 }
323#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB		 324
325 /* Note that strtab is a rather special HV. Assumptions are made
326 about not iterating on it, and not adding tie magic to it.
327 It is properly deallocated in perl_destruct() */
328 PL_strtab = newHV();
329
3d47000e
AB		 330 HvSHAREKEYS_off(PL_strtab); /* mandatory */
331 hv_ksplit(PL_strtab, 512);
332
a38ab475
RZ		 333 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
334
2f42fcb0
JH		 335#ifndef PERL_MICRO
336# ifdef USE_ENVIRON_ARRAY
0631ea03 337 PL_origenviron = environ;
2f42fcb0 338# endif
0631ea03
AB		 339#endif
340
5311654c 341 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 342 * available or if the sysconf() fails, use the HZ.
27da23d5
JH		 343 * The HZ if not originally defined has been by now
344 * been defined as CLK_TCK, if available. */
b6c36746 345#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH		 346 PL_clocktick = sysconf(_SC_CLK_TCK);
347 if (PL_clocktick <= 0)
348#endif
349 PL_clocktick = HZ;
350
081fc587
AB		 351 PL_stashcache = newHV();
352
e8e3635e 353 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 354
27da23d5
JH		 355#ifdef HAS_MMAP
356 if (!PL_mmap_page_size) {
357#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
358 {
359 SETERRNO(0, SS_NORMAL);
360# ifdef _SC_PAGESIZE
361 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
362# else
363 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
364# endif
365 if ((long) PL_mmap_page_size < 0) {
366 if (errno) {
44f8325f 367 SV * const error = ERRSV;
d4c19fe8 368 SvUPGRADE(error, SVt_PV);
0510663f 369 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH		 370 }
371 else
372 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
373 }
374 }
375#else
376# ifdef HAS_GETPAGESIZE
377 PL_mmap_page_size = getpagesize();
378# else
379# if defined(I_SYS_PARAM) && defined(PAGESIZE)
380 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
381# endif
382# endif
383#endif
384 if (PL_mmap_page_size <= 0)
385 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
386 (IV) PL_mmap_page_size);
387 }
388#endif /* HAS_MMAP */
389
390#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
391 PL_timesbase.tms_utime = 0;
392 PL_timesbase.tms_stime = 0;
393 PL_timesbase.tms_cutime = 0;
394 PL_timesbase.tms_cstime = 0;
395#endif
396
7d113631
NC		 397 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
398
a3e6e81e 399 PL_registered_mros = newHV();
9e169432
NC		 400 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
401 HvMAX(PL_registered_mros) = 0;
a3e6e81e 402
7b8dd5f4
KW		 403 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
404 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
405 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
406 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
407 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
408 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
409 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
410 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
411 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
412 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
413 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
414 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW		 415 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
416 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
417 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
418 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 419 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW		 420 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
421 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 422 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
9e7ded3f 423 PL_Assigned_invlist = _new_invlist_C_array(Assigned_invlist);
6ebbc862
KW		 424#ifdef USE_THREAD_SAFE_LOCALE
425 PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
426#endif
7b8dd5f4 427
8990e307 428 ENTER;
79072805
LW		 429}
430
954c1994 431/*
62375a60
NIS		 432=for apidoc nothreadhook
433
434Stub that provides thread hook for perl_destruct when there are
435no threads.
436
437=cut
438*/
439
440int
4e9e3734 441Perl_nothreadhook(pTHX)
62375a60 442{
96a5add6 443 PERL_UNUSED_CONTEXT;
62375a60
NIS		 444 return 0;
445}
446
41e4abd8
NC		 447#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
448void
449Perl_dump_sv_child(pTHX_ SV *sv)
450{
451 ssize_t got;
bf357333
NC		 452 const int sock = PL_dumper_fd;
453 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC		 454 union control_un control;
455 struct msghdr msg;
808ad2d0 456 struct iovec vec[2];
bf357333 457 struct cmsghdr *cmptr;
808ad2d0
NC		 458 int returned_errno;
459 unsigned char buffer[256];
41e4abd8 460
7918f24d
NC		 461 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
462
bf357333 463 if(sock == -1 || debug_fd == -1)
41e4abd8
NC		 464 return;
465
466 PerlIO_flush(Perl_debug_log);
467
bf357333
NC		 468 /* All these shenanigans are to pass a file descriptor over to our child for
469 it to dump out to. We can't let it hold open the file descriptor when it
470 forks, as the file descriptor it will dump to can turn out to be one end
471 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 472 be open, the wait would be forever.) */
bf357333
NC		 473
474 msg.msg_control = control.control;
475 msg.msg_controllen = sizeof(control.control);
476 /* We're a connected socket so we don't need a destination */
477 msg.msg_name = NULL;
478 msg.msg_namelen = 0;
479 msg.msg_iov = vec;
808ad2d0 480 msg.msg_iovlen = 1;
bf357333
NC		 481
482 cmptr = CMSG_FIRSTHDR(&msg);
483 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
484 cmptr->cmsg_level = SOL_SOCKET;
485 cmptr->cmsg_type = SCM_RIGHTS;
486 *((int *)CMSG_DATA(cmptr)) = 1;
487
488 vec[0].iov_base = (void*)&sv;
489 vec[0].iov_len = sizeof(sv);
490 got = sendmsg(sock, &msg, 0);
41e4abd8
NC		 491
492 if(got < 0) {
bf357333 493 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC		 494 abort();
495 }
bf357333
NC		 496 if(got < sizeof(sv)) {
497 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC		 498 abort();
499 }
500
808ad2d0
NC		 501 /* Return protocol is
502 int: errno value
503 unsigned char: length of location string (0 for empty)
504 unsigned char*: string (not terminated)
505 */
506 vec[0].iov_base = (void*)&returned_errno;
507 vec[0].iov_len = sizeof(returned_errno);
508 vec[1].iov_base = buffer;
509 vec[1].iov_len = 1;
510
511 got = readv(sock, vec, 2);
41e4abd8
NC		 512
513 if(got < 0) {
514 perror("Debug leaking scalars parent read failed");
808ad2d0 515 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 516 abort();
517 }
808ad2d0 518 if(got < sizeof(returned_errno) + 1) {
41e4abd8 519 perror("Debug leaking scalars parent short read");
808ad2d0 520 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC		 521 abort();
522 }
523
808ad2d0
NC		 524 if (*buffer) {
525 got = read(sock, buffer + 1, *buffer);
526 if(got < 0) {
527 perror("Debug leaking scalars parent read 2 failed");
528 PerlIO_flush(PerlIO_stderr());
529 abort();
530 }
531
532 if(got < *buffer) {
533 perror("Debug leaking scalars parent short read 2");
534 PerlIO_flush(PerlIO_stderr());
535 abort();
536 }
537 }
538
539 if (returned_errno || *buffer) {
540 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
541 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 542 returned_errno, Strerror(returned_errno));
41e4abd8
NC		 543 }
544}
545#endif
546
62375a60 547/*
954c1994
GS		 548=for apidoc perl_destruct
549
550Shuts down a Perl interpreter. See L<perlembed>.
551
552=cut
553*/
554
31d77e54 555int
0cb96387 556perl_destruct(pTHXx)
79072805 557{
27da23d5 558 dVAR;
be2ea8ed 559 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 560 HV *hv;
2aa47728 561#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC		 562 pid_t child;
563#endif
9c0b6888 564 int i;
8990e307 565
7918f24d
NC		 566 PERL_ARGS_ASSERT_PERL_DESTRUCT;
567#ifndef MULTIPLICITY
ed6c66dd 568 PERL_UNUSED_ARG(my_perl);
7918f24d 569#endif
9d4ba2ae 570
3d22c4f0
GG		 571 assert(PL_scopestack_ix == 1);
572
7766f137
GS		 573 /* wait for all pseudo-forked children to finish */
574 PERL_WAIT_FOR_CHILDREN;
575
3280af22 576 destruct_level = PL_perl_destruct_level;
36e77d41 577#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 578 {
9d4ba2ae
AL		 579 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
580 if (s) {
96e440d2
JH		 581 int i;
582 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
583 i = -1;
584 } else {
22ff3130
HS		 585 UV uv;
586 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
587 i = (int)uv;
588 else
589 i = 0;
96e440d2 590 }
36e77d41
DD		 591#ifdef DEBUGGING
592 if (destruct_level < i) destruct_level = i;
593#endif
594#ifdef PERL_TRACK_MEMPOOL
f5199772
KW		 595 /* RT #114496, for perl_free */
596 PL_perl_destruct_level = i;
36e77d41 597#endif
5f05dabc 598 }
4633a7c4
LW		 599 }
600#endif
601
27da23d5 602 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB		 603 dJMPENV;
604 int x = 0;
605
606 JMPENV_PUSH(x);
1b6737cc 607 PERL_UNUSED_VAR(x);
9ebf26ad 608 if (PL_endav && !PL_minus_c) {
ca7b837b 609 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 610 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 611 }
f3faeb53 612 JMPENV_POP;
26f423df 613 }
f3faeb53 614 LEAVE;
a0d0e21e 615 FREETMPS;
3d22c4f0 616 assert(PL_scopestack_ix == 0);
a0d0e21e 617
e00b64d4 618 /* Need to flush since END blocks can produce output */
8abddda3
TC		 619 /* flush stdout separately, since we can identify it */
620#ifdef USE_PERLIO
621 {
622 PerlIO *stdo = PerlIO_stdout();
623 if (*stdo && PerlIO_flush(stdo)) {
624 PerlIO_restore_errno(stdo);
675c73ca
MB		 625 if (errno)
626 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
627 Strerror(errno));
8abddda3
TC		 628 if (!STATUS_UNIX)
629 STATUS_ALL_FAILURE;
630 }
631 }
632#endif
f13a2bc0 633 my_fflush_all();
e00b64d4 634
75d476e2 635#ifdef PERL_TRACE_OPS
e71f25b3
JC		 636 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
637 {
638 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
639 UV uv;
640
641 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
642 || !(uv > 0))
643 goto no_trace_out;
644 }
75d476e2
SM		 645 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
646 for (i = 0; i <= OP_max; ++i) {
e71f25b3 647 if (PL_op_exec_cnt[i])
147e3846 648 PerlIO_printf(Perl_debug_log, " %s: %" UVuf "\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM		 649 }
650 /* Utility slot for easily doing little tracing experiments in the runloop: */
651 if (PL_op_exec_cnt[OP_max+1] != 0)
147e3846 652 PerlIO_printf(Perl_debug_log, " SPECIAL: %" UVuf "\n", PL_op_exec_cnt[OP_max+1]);
75d476e2 653 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 654 no_trace_out:
75d476e2
SM		 655#endif
656
657
16c91539 658 if (PL_threadhook(aTHX)) {
62375a60 659 /* Threads hook has vetoed further cleanup */
c301d606 660 PL_veto_cleanup = TRUE;
37038d91 661 return STATUS_EXIT;
62375a60
NIS		 662 }
663
2aa47728
NC		 664#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
665 if (destruct_level != 0) {
666 /* Fork here to create a child. Our child's job is to preserve the
667 state of scalars prior to destruction, so that we can instruct it
668 to dump any scalars that we later find have leaked.
669 There's no subtlety in this code - it assumes POSIX, and it doesn't
670 fail gracefully */
671 int fd[2];
672
673 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
674 perror("Debug leaking scalars socketpair failed");
675 abort();
676 }
677
678 child = fork();
679 if(child == -1) {
680 perror("Debug leaking scalars fork failed");
681 abort();
682 }
683 if (!child) {
684 /* We are the child */
3125a5a4
NC		 685 const int sock = fd[1];
686 const int debug_fd = PerlIO_fileno(Perl_debug_log);
687 int f;
808ad2d0
NC		 688 const char *where;
689 /* Our success message is an integer 0, and a char 0 */
b61433a9 690 static const char success[sizeof(int) + 1] = {0};
3125a5a4 691
2aa47728 692 close(fd[0]);
2aa47728 693
3125a5a4
NC		 694 /* We need to close all other file descriptors otherwise we end up
695 with interesting hangs, where the parent closes its end of a
696 pipe, and sits waiting for (another) child to terminate. Only
697 that child never terminates, because it never gets EOF, because
bf357333
NC		 698 we also have the far end of the pipe open. We even need to
699 close the debugging fd, because sometimes it happens to be one
700 end of a pipe, and a process is waiting on the other end for
701 EOF. Normally it would be closed at some point earlier in
702 destruction, but if we happen to cause the pipe to remain open,
703 EOF never occurs, and we get an infinite hang. Hence all the
704 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC		 705
706 f = sysconf(_SC_OPEN_MAX);
707 if(f < 0) {
808ad2d0
NC		 708 where = "sysconf failed";
709 goto abort;
3125a5a4
NC		 710 }
711 while (f--) {
712 if (f == sock)
713 continue;
3125a5a4
NC		 714 close(f);
715 }
716
2aa47728
NC		 717 while (1) {
718 SV *target;
bf357333
NC		 719 union control_un control;
720 struct msghdr msg;
721 struct iovec vec[1];
722 struct cmsghdr *cmptr;
723 ssize_t got;
724 int got_fd;
725
726 msg.msg_control = control.control;
727 msg.msg_controllen = sizeof(control.control);
728 /* We're a connected socket so we don't need a source */
729 msg.msg_name = NULL;
730 msg.msg_namelen = 0;
731 msg.msg_iov = vec;
c3caa5c3 732 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC		 733
734 vec[0].iov_base = (void*)&target;
735 vec[0].iov_len = sizeof(target);
736
737 got = recvmsg(sock, &msg, 0);
2aa47728
NC		 738
739 if(got == 0)
740 break;
741 if(got < 0) {
808ad2d0
NC		 742 where = "recv failed";
743 goto abort;
2aa47728
NC		 744 }
745 if(got < sizeof(target)) {
808ad2d0
NC		 746 where = "short recv";
747 goto abort;
2aa47728 748 }
bf357333 749
808ad2d0
NC		 750 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
751 where = "no cmsg";
752 goto abort;
753 }
754 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
755 where = "wrong cmsg_len";
756 goto abort;
757 }
758 if(cmptr->cmsg_level != SOL_SOCKET) {
759 where = "wrong cmsg_level";
760 goto abort;
761 }
762 if(cmptr->cmsg_type != SCM_RIGHTS) {
763 where = "wrong cmsg_type";
764 goto abort;
765 }
bf357333
NC		 766
767 got_fd = *(int*)CMSG_DATA(cmptr);
768 /* For our last little bit of trickery, put the file descriptor
769 back into Perl_debug_log, as if we never actually closed it
770 */
808ad2d0
NC		 771 if(got_fd != debug_fd) {
772 if (dup2(got_fd, debug_fd) == -1) {
773 where = "dup2";
774 goto abort;
775 }
776 }
2aa47728 777 sv_dump(target);
bf357333 778
2aa47728
NC		 779 PerlIO_flush(Perl_debug_log);
780
808ad2d0 781 got = write(sock, &success, sizeof(success));
2aa47728
NC		 782
783 if(got < 0) {
808ad2d0
NC		 784 where = "write failed";
785 goto abort;
2aa47728 786 }
808ad2d0
NC		 787 if(got < sizeof(success)) {
788 where = "short write";
789 goto abort;
2aa47728
NC		 790 }
791 }
792 _exit(0);
808ad2d0
NC		 793 abort:
794 {
795 int send_errno = errno;
796 unsigned char length = (unsigned char) strlen(where);
797 struct iovec failure[3] = {
798 {(void*)&send_errno, sizeof(send_errno)},
799 {&length, 1},
800 {(void*)where, length}
801 };
802 int got = writev(sock, failure, 3);
803 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
804 in the parent if we try to read from the socketpair after the
805 child has exited, even if there was data to read.
806 So sleep a bit to give the parent a fighting chance of
807 reading the data. */
808 sleep(2);
809 _exit((got == -1) ? errno : 0);
810 }
bf357333 811 /* End of child. */
2aa47728 812 }
41e4abd8 813 PL_dumper_fd = fd[0];
2aa47728
NC		 814 close(fd[1]);
815 }
816#endif
817
ff0cee69
PP		 818 /* We must account for everything. */
819
820 /* Destroy the main CV and syntax tree */
37e77c23
FC		 821 /* Set PL_curcop now, because destroying ops can cause new SVs
822 to be generated in Perl_pad_swipe, and when running with
823 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
824 op from which the filename structure member is copied. */
17fbfdf6 825 PL_curcop = &PL_compiling;
3280af22 826 if (PL_main_root) {
4e380990
DM		 827 /* ensure comppad/curpad to refer to main's pad */
828 if (CvPADLIST(PL_main_cv)) {
829 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 830 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 831 }
3280af22 832 op_free(PL_main_root);
5f66b61c 833 PL_main_root = NULL;
a0d0e21e 834 }
5f66b61c 835 PL_main_start = NULL;
aac9d523
DM		 836 /* note that PL_main_cv isn't usually actually freed at this point,
837 * due to the CvOUTSIDE refs from subs compiled within it. It will
838 * get freed once all the subs are freed in sv_clean_all(), for
839 * destruct_level > 0 */
3280af22 840 SvREFCNT_dec(PL_main_cv);
601f1833 841 PL_main_cv = NULL;
ca7b837b 842 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 843
13621cfb
NIS		 844 /* Tell PerlIO we are about to tear things apart in case
845 we have layers which are using resources that should
846 be cleaned up now.
847 */
848
849 PerlIO_destruct(aTHX);
850
ddf23d4a
SM		 851 /*
852 * Try to destruct global references. We do this first so that the
853 * destructors and destructees still exist. Some sv's might remain.
854 * Non-referenced objects are on their own.
855 */
856 sv_clean_objs();
8990e307 857
5cd24f17 858 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 859 SvREFCNT_dec(PL_warnhook);
a0714e2c 860 PL_warnhook = NULL;
3280af22 861 SvREFCNT_dec(PL_diehook);
a0714e2c 862 PL_diehook = NULL;
5cd24f17 863
4b556e6c 864 /* call exit list functions */
3280af22 865 while (PL_exitlistlen-- > 0)
acfe0abc 866 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 867
3280af22 868 Safefree(PL_exitlist);
4b556e6c 869
1c4916e5
CB		 870 PL_exitlist = NULL;
871 PL_exitlistlen = 0;
872
a3e6e81e
NC		 873 SvREFCNT_dec(PL_registered_mros);
874
551a8b83 875 /* jettison our possibly duplicated environment */
4b647fb0
DM		 876 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
877 * so we certainly shouldn't free it here
878 */
2f42fcb0 879#ifndef PERL_MICRO
4b647fb0 880#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 881 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS		 882#ifdef USE_ITHREADS
883 /* only main thread can free environ[0] contents */
884 && PL_curinterp == aTHX
885#endif
886 )
887 {
551a8b83
JH		 888 I32 i;
889
890 for (i = 0; environ[i]; i++)
4b420006 891 safesysfree(environ[i]);
0631ea03 892
4b420006
JH		 893 /* Must use safesysfree() when working with environ. */
894 safesysfree(environ);
551a8b83
JH		 895
896 environ = PL_origenviron;
897 }
898#endif
2f42fcb0 899#endif /* !PERL_MICRO */
551a8b83 900
30985c42
JH		 901 if (destruct_level == 0) {
902
903 DEBUG_P(debprofdump());
904
905#if defined(PERLIO_LAYERS)
906 /* No more IO - including error messages ! */
907 PerlIO_cleanup(aTHX);
908#endif
909
910 CopFILE_free(&PL_compiling);
30985c42
JH		 911
912 /* The exit() function will do everything that needs doing. */
913 return STATUS_EXIT;
914 }
915
9fa9f06b
KW		 916 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
917
5f8cb046
DM		 918#ifdef USE_ITHREADS
919 /* the syntax tree is shared between clones
920 * so op_free(PL_main_root) only ReREFCNT_dec's
921 * REGEXPs in the parent interpreter
922 * we need to manually ReREFCNT_dec for the clones
923 */
0547a729
DM		 924 {
925 I32 i = AvFILLp(PL_regex_padav);
926 SV **ary = AvARRAY(PL_regex_padav);
927
928 for (; i; i--) {
929 SvREFCNT_dec(ary[i]);
930 ary[i] = &PL_sv_undef;
931 }
932 }
5f8cb046
DM		 933#endif
934
0547a729 935
ad64d0ec 936 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB		 937 PL_stashcache = NULL;
938
5f05dabc
PP		 939 /* loosen bonds of global variables */
940
2f9285f8
DM		 941 /* XXX can PL_parser still be non-null here? */
942 if(PL_parser && PL_parser->rsfp) {
943 (void)PerlIO_close(PL_parser->rsfp);
944 PL_parser->rsfp = NULL;
8ebc5c01
PP		 945 }
946
84386e14
RGS		 947 if (PL_minus_F) {
948 Safefree(PL_splitstr);
949 PL_splitstr = NULL;
950 }
951
8ebc5c01 952 /* switches */
3280af22
NIS		 953 PL_minus_n = FALSE;
954 PL_minus_p = FALSE;
955 PL_minus_l = FALSE;
956 PL_minus_a = FALSE;
957 PL_minus_F = FALSE;
958 PL_doswitches = FALSE;
599cee73 959 PL_dowarn = G_WARN_OFF;
1a904fc8 960#ifdef PERL_SAWAMPERSAND
d3b97530 961 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 962#endif
3280af22
NIS		 963 PL_unsafe = FALSE;
964
965 Safefree(PL_inplace);
bd61b366 966 PL_inplace = NULL;
a7cb1f99 967 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS		 968
969 if (PL_e_script) {
970 SvREFCNT_dec(PL_e_script);
a0714e2c 971 PL_e_script = NULL;
8ebc5c01
PP		 972 }
973
bf9cdc68
RG		 974 PL_perldb = 0;
975
8ebc5c01
PP		 976 /* magical thingies */
977
e23d9e2f
CS		 978 SvREFCNT_dec(PL_ofsgv); /* *, */
979 PL_ofsgv = NULL;
5f05dabc 980
7889fe52 981 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 982 PL_ors_sv = NULL;
8ebc5c01 983
3280af22 984 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 985 PL_rs = NULL;
dc92893f 986
d33b2eba 987 Safefree(PL_osname); /* $^O */
bd61b366 988 PL_osname = NULL;
5f05dabc 989
3280af22 990 SvREFCNT_dec(PL_statname);
a0714e2c
SS		 991 PL_statname = NULL;
992 PL_statgv = NULL;
5f05dabc 993
8ebc5c01
PP		 994 /* defgv, aka *_ should be taken care of elsewhere */
995
7d5ea4e7
GS		 996 /* float buffer */
997 Safefree(PL_efloatbuf);
bd61b366 998 PL_efloatbuf = NULL;
7d5ea4e7
GS		 999 PL_efloatsize = 0;
1000
8ebc5c01 1001 /* startup and shutdown function lists */
3280af22 1002 SvREFCNT_dec(PL_beginav);
5a837c8f 1003 SvREFCNT_dec(PL_beginav_save);
3280af22 1004 SvREFCNT_dec(PL_endav);
7d30b5c4 1005 SvREFCNT_dec(PL_checkav);
ece599bd 1006 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG		 1007 SvREFCNT_dec(PL_unitcheckav);
1008 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1009 SvREFCNT_dec(PL_initav);
7d49f689
NC		 1010 PL_beginav = NULL;
1011 PL_beginav_save = NULL;
1012 PL_endav = NULL;
1013 PL_checkav = NULL;
1014 PL_checkav_save = NULL;
3c10abe3
AG		 1015 PL_unitcheckav = NULL;
1016 PL_unitcheckav_save = NULL;
7d49f689 1017 PL_initav = NULL;
5618dfe8 1018
8ebc5c01 1019 /* shortcuts just get cleared */
a0714e2c
SS		 1020 PL_hintgv = NULL;
1021 PL_errgv = NULL;
a0714e2c
SS		 1022 PL_argvoutgv = NULL;
1023 PL_stdingv = NULL;
1024 PL_stderrgv = NULL;
1025 PL_last_in_gv = NULL;
a0714e2c
SS		 1026 PL_DBsingle = NULL;
1027 PL_DBtrace = NULL;
1028 PL_DBsignal = NULL;
a6d69523
TC		 1029 PL_DBsingle_iv = 0;
1030 PL_DBtrace_iv = 0;
1031 PL_DBsignal_iv = 0;
601f1833 1032 PL_DBcv = NULL;
7d49f689 1033 PL_dbargs = NULL;
5c284bb0 1034 PL_debstash = NULL;
8ebc5c01 1035
cf93a474 1036 SvREFCNT_dec(PL_envgv);
f03015cd 1037 SvREFCNT_dec(PL_incgv);
722fa0e9 1038 SvREFCNT_dec(PL_argvgv);
475b1e90 1039 SvREFCNT_dec(PL_replgv);
8cece913
FC		 1040 SvREFCNT_dec(PL_DBgv);
1041 SvREFCNT_dec(PL_DBline);
1042 SvREFCNT_dec(PL_DBsub);
cf93a474 1043 PL_envgv = NULL;
f03015cd 1044 PL_incgv = NULL;
722fa0e9 1045 PL_argvgv = NULL;
475b1e90 1046 PL_replgv = NULL;
8cece913
FC		 1047 PL_DBgv = NULL;
1048 PL_DBline = NULL;
1049 PL_DBsub = NULL;
1050
7a1c5554 1051 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1052 PL_argvout_stack = NULL;
8ebc5c01 1053
5c831c24 1054 SvREFCNT_dec(PL_modglobal);
5c284bb0 1055 PL_modglobal = NULL;
5c831c24 1056 SvREFCNT_dec(PL_preambleav);
7d49f689 1057 PL_preambleav = NULL;
5c831c24 1058 SvREFCNT_dec(PL_subname);
a0714e2c 1059 PL_subname = NULL;
ca0c25f6 1060#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1061 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1062 PL_pidstatus = NULL;
ca0c25f6 1063#endif
5c831c24 1064 SvREFCNT_dec(PL_toptarget);
a0714e2c 1065 PL_toptarget = NULL;
5c831c24 1066 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS		 1067 PL_bodytarget = NULL;
1068 PL_formtarget = NULL;
5c831c24 1069
d33b2eba 1070 /* free locale stuff */
b9582b6a 1071#ifdef USE_LOCALE_COLLATE
d33b2eba 1072 Safefree(PL_collation_name);
bd61b366 1073 PL_collation_name = NULL;
b9582b6a 1074#endif
d33b2eba 1075
b9582b6a 1076#ifdef USE_LOCALE_NUMERIC
d33b2eba 1077 Safefree(PL_numeric_name);
bd61b366 1078 PL_numeric_name = NULL;
a453c169 1079 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1080 PL_numeric_radix_sv = NULL;
b9582b6a 1081#endif
d33b2eba 1082
9c0b6888
KW		 1083 /* clear character classes */
1084 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1085 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1086 PL_utf8_swash_ptrs[i] = NULL;
1087 }
5c831c24
GS		 1088 SvREFCNT_dec(PL_utf8_mark);
1089 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1090 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1091 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1092 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH		 1093 SvREFCNT_dec(PL_utf8_idstart);
1094 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1095 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1096 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1097 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1098 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW		 1099 SvREFCNT_dec(PL_UpperLatin1);
1100 SvREFCNT_dec(PL_Latin1);
1101 SvREFCNT_dec(PL_NonL1NonFinalFold);
1102 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1103#ifdef USE_LOCALE_CTYPE
780fcc9f 1104 SvREFCNT_dec(PL_warn_locale);
5b7de470 1105#endif
a0714e2c
SS		 1106 PL_utf8_mark = NULL;
1107 PL_utf8_toupper = NULL;
1108 PL_utf8_totitle = NULL;
1109 PL_utf8_tolower = NULL;
1110 PL_utf8_tofold = NULL;
1111 PL_utf8_idstart = NULL;
1112 PL_utf8_idcont = NULL;
2726813d 1113 PL_utf8_foldclosures = NULL;
9fa9f06b 1114 PL_AboveLatin1 = NULL;
e0a1ff7a 1115 PL_InBitmap = NULL;
9fa9f06b 1116 PL_HasMultiCharFold = NULL;
5b7de470 1117#ifdef USE_LOCALE_CTYPE
780fcc9f 1118 PL_warn_locale = NULL;
5b7de470 1119#endif
9fa9f06b
KW		 1120 PL_Latin1 = NULL;
1121 PL_NonL1NonFinalFold = NULL;
1122 PL_UpperLatin1 = NULL;
86f72d56 1123 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW		 1124 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1125 PL_XPosix_ptrs[i] = NULL;
86f72d56 1126 }
64935bc6 1127 PL_GCB_invlist = NULL;
6b659339 1128 PL_LB_invlist = NULL;
06ae2722 1129 PL_SB_invlist = NULL;
ae3bb8ea 1130 PL_WB_invlist = NULL;
9e7ded3f 1131 PL_Assigned_invlist = NULL;
5c831c24 1132
971a9dd3 1133 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1134 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1135 PL_compiling.cop_warnings = NULL;
20439bc7
Z		 1136 cophh_free(CopHINTHASH_get(&PL_compiling));
1137 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1138 CopFILE_free(&PL_compiling);
5c831c24 1139
a0d0e21e 1140 /* Prepare to destruct main symbol table. */
5f05dabc 1141
3280af22 1142 hv = PL_defstash;
ca556bcd 1143 /* break ref loop *:: <=> %:: */
854da30f 1144 (void)hv_deletes(hv, "main::", G_DISCARD);
3280af22 1145 PL_defstash = 0;
a0d0e21e 1146 SvREFCNT_dec(hv);
5c831c24 1147 SvREFCNT_dec(PL_curstname);
a0714e2c 1148 PL_curstname = NULL;
a0d0e21e 1149
5a844595
GS		 1150 /* clear queued errors */
1151 SvREFCNT_dec(PL_errors);
a0714e2c 1152 PL_errors = NULL;
5a844595 1153
dd69841b
BB		 1154 SvREFCNT_dec(PL_isarev);
1155
a0d0e21e 1156 FREETMPS;
9b387841 1157 if (destruct_level >= 2) {
3280af22 1158 if (PL_scopestack_ix != 0)
9b387841
NC		 1159 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1160 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1161 (long)PL_scopestack_ix);
3280af22 1162 if (PL_savestack_ix != 0)
9b387841
NC		 1163 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1164 "Unbalanced saves: %ld more saves than restores\n",
1165 (long)PL_savestack_ix);
3280af22 1166 if (PL_tmps_floor != -1)
9b387841
NC		 1167 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1168 (long)PL_tmps_floor + 1);
a0d0e21e 1169 if (cxstack_ix != -1)
9b387841
NC		 1170 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1171 (long)cxstack_ix + 1);
a0d0e21e 1172 }
8990e307 1173
0547a729
DM		 1174#ifdef USE_ITHREADS
1175 SvREFCNT_dec(PL_regex_padav);
1176 PL_regex_padav = NULL;
1177 PL_regex_pad = NULL;
1178#endif
1179
776df701 1180#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH		 1181 /* the entries in this list are allocated via SV PVX's, so get freed
1182 * in sv_clean_all */
1183 Safefree(PL_my_cxt_list);
776df701 1184#endif
57bb2458 1185
8990e307 1186 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH		 1187
1188 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1189 while (sv_clean_all() > 2)
5226ed68
JH		 1190 ;
1191
23083432
FC		 1192#ifdef USE_ITHREADS
1193 Safefree(PL_stashpad); /* must come after sv_clean_all */
1194#endif
1195
d4777f27
GS		 1196 AvREAL_off(PL_fdpid); /* no surviving entries */
1197 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1198 PL_fdpid = NULL;
d33b2eba 1199
6c644e78
GS		 1200#ifdef HAVE_INTERP_INTERN
1201 sys_intern_clear();
1202#endif
1203
a38ab475
RZ		 1204 /* constant strings */
1205 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1206 SvREFCNT_dec(PL_sv_consts[i]);
1207 PL_sv_consts[i] = NULL;
1208 }
1209
6e72f9df
PP		 1210 /* Destruct the global string table. */
1211 {
1212 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1213 * so that sv_free() won't fail on them.
80459961
NC		 1214 * Now that the global string table is using a single hunk of memory
1215 * for both HE and HEK, we either need to explicitly unshare it the
1216 * correct way, or actually free things here.
6e72f9df 1217 */
80459961
NC		 1218 I32 riter = 0;
1219 const I32 max = HvMAX(PL_strtab);
c4420975 1220 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC		 1221 HE *hent = array[0];
1222
6e72f9df 1223 for (;;) {
0453d815 1224 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1225 HE * const next = HeNEXT(hent);
9014280d 1226 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1227 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1228 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC		 1229 Safefree(hent);
1230 hent = next;
6e72f9df
PP		 1231 }
1232 if (!hent) {
1233 if (++riter > max)
1234 break;
1235 hent = array[riter];
1236 }
1237 }
80459961
NC		 1238
1239 Safefree(array);
1240 HvARRAY(PL_strtab) = 0;
1241 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1242 }
3280af22 1243 SvREFCNT_dec(PL_strtab);
6e72f9df 1244
e652bb2f 1245#ifdef USE_ITHREADS
c21d1a0f 1246 /* free the pointer tables used for cloning */
a0739874 1247 ptr_table_free(PL_ptr_table);
bf9cdc68 1248 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1249#endif
a0739874 1250
d33b2eba
GS		 1251 /* free special SVs */
1252
1253 SvREFCNT(&PL_sv_yes) = 0;
1254 sv_clear(&PL_sv_yes);
1255 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1256 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS		 1257
1258 SvREFCNT(&PL_sv_no) = 0;
1259 sv_clear(&PL_sv_no);
1260 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1261 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1262
9f375a43
DM		 1263 {
1264 int i;
1265 for (i=0; i<=2; i++) {
1266 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1267 sv_clear(PERL_DEBUG_PAD(i));
1268 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1269 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1270 }
1271 }
1272
0453d815 1273 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1274 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1275
eba0f806
DM		 1276#ifdef DEBUG_LEAKING_SCALARS
1277 if (PL_sv_count != 0) {
1278 SV* sva;
1279 SV* sv;
eb578fdb 1280 SV* svend;
eba0f806 1281
ad64d0ec 1282 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM		 1283 svend = &sva[SvREFCNT(sva)];
1284 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1285 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1286 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1287 " flags=0x%"UVxf
fd0854ff 1288 " refcnt=%"UVuf pTHX__FORMAT "\n"
147e3846
KW		 1289 "\tallocated at %s:%d %s %s (parent 0x%" UVxf ");"
1290 "serial %" UVuf "\n",
574b8821
NC		 1291 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1292 pTHX__VALUE,
fd0854ff
DM		 1293 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1294 sv->sv_debug_line,
1295 sv->sv_debug_inpad ? "for" : "by",
1296 sv->sv_debug_optype ?
1297 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1298 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1299 sv->sv_debug_serial
fd0854ff 1300 );
2aa47728 1301#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1302 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1303#endif
eba0f806
DM		 1304 }
1305 }
1306 }
1307 }
2aa47728
NC		 1308#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1309 {
1310 int status;
1311 fd_set rset;
1312 /* Wait for up to 4 seconds for child to terminate.
1313 This seems to be the least effort way of timing out on reaping
1314 its exit status. */
1315 struct timeval waitfor = {4, 0};
41e4abd8 1316 int sock = PL_dumper_fd;
2aa47728
NC		 1317
1318 shutdown(sock, 1);
1319 FD_ZERO(&rset);
1320 FD_SET(sock, &rset);
1321 select(sock + 1, &rset, NULL, NULL, &waitfor);
1322 waitpid(child, &status, WNOHANG);
1323 close(sock);
1324 }
1325#endif
eba0f806 1326#endif
77abb4c6
NC		 1327#ifdef DEBUG_LEAKING_SCALARS_ABORT
1328 if (PL_sv_count)
1329 abort();
1330#endif
bf9cdc68 1331 PL_sv_count = 0;
eba0f806 1332
56a2bab7 1333#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS		 1334 /* No more IO - including error messages ! */
1335 PerlIO_cleanup(aTHX);
1336#endif
1337
9f4bd222 1338 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1339 as currently layers use it rather than NULL as a marker
9f4bd222
NIS		 1340 for no arg - and will try and SvREFCNT_dec it.
1341 */
1342 SvREFCNT(&PL_sv_undef) = 0;
1343 SvREADONLY_off(&PL_sv_undef);
1344
3280af22 1345 Safefree(PL_origfilename);
bd61b366 1346 PL_origfilename = NULL;
43c5f42d 1347 Safefree(PL_reg_curpm);
dd28f7bb 1348 free_tied_hv_pool();
3280af22 1349 Safefree(PL_op_mask);
cf36064f 1350 Safefree(PL_psig_name);
bf9cdc68 1351 PL_psig_name = (SV**)NULL;
d525a7b2 1352 PL_psig_ptr = (SV**)NULL;
31c91b43
LR		 1353 {
1354 /* We need to NULL PL_psig_pend first, so that
1355 signal handlers know not to use it */
1356 int *psig_save = PL_psig_pend;
1357 PL_psig_pend = (int*)NULL;
1358 Safefree(psig_save);
1359 }
6e72f9df 1360 nuke_stacks();
284167a5
SM		 1361 TAINTING_set(FALSE);
1362 TAINT_WARN_set(FALSE);
3280af22 1363 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1364
a0d0e21e 1365 DEBUG_P(debprofdump());
d33b2eba 1366
b173165c
FC		 1367 PL_debug = 0;
1368
e5dd39fc 1369#ifdef USE_REENTRANT_API
10bc17b6 1370 Perl_reentrant_free(aTHX);
e5dd39fc
AB		 1371#endif
1372
a24da70b
NC		 1373 /* These all point to HVs that are about to be blown away.
1374 Code in core and on CPAN assumes that if the interpreter is re-started
1375 that they will be cleanly NULL or pointing to a valid HV. */
1376 PL_custom_op_names = NULL;
1377 PL_custom_op_descs = NULL;
1378 PL_custom_ops = NULL;
1379
612f20c3
GS		 1380 sv_free_arenas();
1381
5d9a96ca
DM		 1382 while (PL_regmatch_slab) {
1383 regmatch_slab *s = PL_regmatch_slab;
1384 PL_regmatch_slab = PL_regmatch_slab->next;
1385 Safefree(s);
1386 }
1387
fc36a67e
PP		 1388 /* As the absolutely last thing, free the non-arena SV for mess() */
1389
3280af22 1390 if (PL_mess_sv) {
f350b448
NC		 1391 /* we know that type == SVt_PVMG */
1392
9c63abab 1393 /* it could have accumulated taint magic */
f350b448
NC		 1394 MAGIC* mg;
1395 MAGIC* moremagic;
1396 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1397 moremagic = mg->mg_moremagic;
1398 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1399 && mg->mg_len >= 0)
1400 Safefree(mg->mg_ptr);
1401 Safefree(mg);
9c63abab 1402 }
f350b448 1403
fc36a67e 1404 /* we know that type >= SVt_PV */
8bd4d4c5 1405 SvPV_free(PL_mess_sv);
3280af22
NIS		 1406 Safefree(SvANY(PL_mess_sv));
1407 Safefree(PL_mess_sv);
a0714e2c 1408 PL_mess_sv = NULL;
fc36a67e 1409 }
37038d91 1410 return STATUS_EXIT;
79072805
LW		 1411}
1412
954c1994
GS		 1413/*
1414=for apidoc perl_free
1415
1416Releases a Perl interpreter. See L<perlembed>.
1417
1418=cut
1419*/
1420
79072805 1421void
0cb96387 1422perl_free(pTHXx)
79072805 1423{
5174512c
NC		 1424 dVAR;
1425
7918f24d
NC		 1426 PERL_ARGS_ASSERT_PERL_FREE;
1427
c301d606
DM		 1428 if (PL_veto_cleanup)
1429 return;
1430
7cb608b5 1431#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM		 1432 {
1433 /*
1434 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1435 * value as we're probably hunting memory leaks then
1436 */
36e77d41 1437 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1438 const U32 old_debug = PL_debug;
55ef9aae
MHM		 1439 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1440 thread at thread exit. */
4fd0a9b8
NC		 1441 if (DEBUG_m_TEST) {
1442 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1443 "free this thread's memory\n");
1444 PL_debug &= ~ DEBUG_m_FLAG;
1445 }
6edcbed6
DD		 1446 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1447 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1448 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1449 safesysfree(ptr);
1450 }
4fd0a9b8 1451 PL_debug = old_debug;
55ef9aae
MHM		 1452 }
1453 }
7cb608b5
NC		 1454#endif
1455
acfe0abc 1456#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1457# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1458 {
acfe0abc 1459# ifdef NETWARE
7af12a34 1460 void *host = nw_internal_host;
7af12a34 1461 PerlMem_free(aTHXx);
7af12a34 1462 nw_delete_internal_host(host);
acfe0abc 1463# else
bdb50480
NC		 1464 void *host = w32_internal_host;
1465 PerlMem_free(aTHXx);
7af12a34 1466 win32_delete_internal_host(host);
acfe0abc 1467# endif
7af12a34 1468 }
1c0ca838
GS		 1469# else
1470 PerlMem_free(aTHXx);
1471# endif
acfe0abc
GS		 1472#else
1473 PerlMem_free(aTHXx);
76e3520e 1474#endif
79072805
LW		 1475}
1476
b7f7fff6 1477#if defined(USE_ITHREADS)
aebd1ac7
GA		 1478/* provide destructors to clean up the thread key when libperl is unloaded */
1479#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1480
826955bd 1481#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1482#pragma fini "perl_fini"
666ad1ec
GA		 1483#elif defined(__sun) && !defined(__GNUC__)
1484#pragma fini (perl_fini)
aebd1ac7
GA		 1485#endif
1486
0dbb1585
AL		 1487static void
1488#if defined(__GNUC__)
1489__attribute__((destructor))
aebd1ac7 1490#endif
de009b76 1491perl_fini(void)
aebd1ac7 1492{
27da23d5 1493 dVAR;
5c64bffd
NC		 1494 if (
1495#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1496 my_vars &&
1497#endif
1498 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA		 1499 FREE_THREAD_KEY;
1500}
1501
1502#endif /* WIN32 */
1503#endif /* THREADS */
1504
4b556e6c 1505void
864dbfa3 1506Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1507{
3280af22
NIS		 1508 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1509 PL_exitlist[PL_exitlistlen].fn = fn;
1510 PL_exitlist[PL_exitlistlen].ptr = ptr;
1511 ++PL_exitlistlen;
4b556e6c
JD		 1512}
1513
954c1994
GS		 1514/*
1515=for apidoc perl_parse
1516
1517Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1518
1519=cut
1520*/
1521
03d9f026
FC		 1522#define SET_CURSTASH(newstash) \
1523 if (PL_curstash != newstash) { \
1524 SvREFCNT_dec(PL_curstash); \
1525 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1526 }
1527
79072805 1528int
0cb96387 1529perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1530{
27da23d5 1531 dVAR;
6224f72b 1532 I32 oldscope;
6224f72b 1533 int ret;
db36c5a1 1534 dJMPENV;
8d063cd8 1535
7918f24d
NC		 1536 PERL_ARGS_ASSERT_PERL_PARSE;
1537#ifndef MULTIPLICITY
ed6c66dd 1538 PERL_UNUSED_ARG(my_perl);
7918f24d 1539#endif
95309d6b 1540#if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)) && !defined(NO_PERL_HASH_SEED_DEBUG)
b0891165 1541 {
7dc86639
YO		 1542 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1543
22ff3130 1544 if (s && strEQ(s, "1")) {
25c1b134
TC		 1545 const unsigned char *seed= PERL_HASH_SEED;
1546 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO		 1547 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1548 while (seed < seed_end) {
1549 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1550 }
6a5b4183
YO		 1551#ifdef PERL_HASH_RANDOMIZE_KEYS
1552 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1553 PL_HASH_RAND_BITS_ENABLED,
1554 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1555#endif
7dc86639
YO		 1556 PerlIO_printf(Perl_debug_log, "\n");
1557 }
b0891165 1558 }
95309d6b 1559#endif /* #if (defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) ... */
43238333 1560
ea34f6bd 1561#ifdef __amigaos4__
43238333
AB		 1562 {
1563 struct NameTranslationInfo nti;
1564 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1565 }
1566#endif
1567
3280af22 1568 PL_origargc = argc;
e2975953 1569 PL_origargv = argv;
a0d0e21e 1570
a2722ac9
GA		 1571 if (PL_origalen != 0) {
1572 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1573 }
1574 else {
3cb9023d
JH		 1575 /* Set PL_origalen be the sum of the contiguous argv[]
1576 * elements plus the size of the env in case that it is
e9137a8e 1577 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH		 1578 * as the maximum modifiable length of $0. In the worst case
1579 * the area we are able to modify is limited to the size of
43c32782 1580 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1581 * --jhi */
e1ec3a88 1582 const char *s = NULL;
54bfe034 1583 int i;
b7249aaf 1584 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1585 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1586 const UV aligned =
43c32782
JH		 1587 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1588
1589 /* See if all the arguments are contiguous in memory. Note
1590 * that 'contiguous' is a loose term because some platforms
1591 * align the argv[] and the envp[]. If the arguments look
1592 * like non-aligned, assume that they are 'strictly' or
1593 * 'traditionally' contiguous. If the arguments look like
1594 * aligned, we just check that they are within aligned
1595 * PTRSIZE bytes. As long as no system has something bizarre
1596 * like the argv[] interleaved with some other data, we are
1597 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH		 1598 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1599 while (*s) s++;
1600 for (i = 1; i < PL_origargc; i++) {
1601 if ((PL_origargv[i] == s + 1
43c32782 1602#ifdef OS2
c8941eeb 1603 || PL_origargv[i] == s + 2
43c32782 1604#endif
c8941eeb
JH		 1605 )
1606 ||
1607 (aligned &&
1608 (PL_origargv[i] > s &&
1609 PL_origargv[i] <=
1610 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1611 )
1612 {
1613 s = PL_origargv[i];
1614 while (*s) s++;
1615 }
1616 else
1617 break;
54bfe034 1618 }
54bfe034 1619 }
a4a109c2
JD		 1620
1621#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1622 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1623 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1624 if ((PL_origenviron[0] == s + 1)
43c32782
JH		 1625 ||
1626 (aligned &&
1627 (PL_origenviron[0] > s &&
1628 PL_origenviron[0] <=
1629 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1630 )
1631 {
9d419b5f 1632#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH		 1633 s = PL_origenviron[0];
1634 while (*s) s++;
1635#endif
bd61b366 1636 my_setenv("NoNe SuCh", NULL);
43c32782
JH		 1637 /* Force copy of environment. */
1638 for (i = 1; PL_origenviron[i]; i++) {
1639 if (PL_origenviron[i] == s + 1
1640 ||
1641 (aligned &&
1642 (PL_origenviron[i] > s &&
1643 PL_origenviron[i] <=
1644 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1645 )
1646 {
1647 s = PL_origenviron[i];
1648 while (*s) s++;
1649 }
1650 else
1651 break;
54bfe034 1652 }
43c32782 1653 }
54bfe034 1654 }
a4a109c2
JD		 1655#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1656
2d2af554 1657 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH		 1658 }
1659
3280af22 1660 if (PL_do_undump) {
a0d0e21e
LW		 1661
1662 /* Come here if running an undumped a.out. */
1663
3280af22
NIS		 1664 PL_origfilename = savepv(argv[0]);
1665 PL_do_undump = FALSE;
a0d0e21e 1666 cxstack_ix = -1; /* start label stack again */
748a9306 1667 init_ids();
284167a5 1668 assert (!TAINT_get);
b7975bdd 1669 TAINT;
e2051532 1670 set_caret_X();
b7975bdd 1671 TAINT_NOT;
a0d0e21e
LW		 1672 init_postdump_symbols(argc,argv,env);
1673 return 0;
1674 }
1675
3280af22 1676 if (PL_main_root) {
3280af22 1677 op_free(PL_main_root);
5f66b61c 1678 PL_main_root = NULL;
ff0cee69 1679 }
5f66b61c 1680 PL_main_start = NULL;
3280af22 1681 SvREFCNT_dec(PL_main_cv);
601f1833 1682 PL_main_cv = NULL;
79072805 1683
3280af22
NIS		 1684 time(&PL_basetime);
1685 oldscope = PL_scopestack_ix;
599cee73 1686 PL_dowarn = G_WARN_OFF;
f86702cc 1687
14dd3ad8 1688 JMPENV_PUSH(ret);
6224f72b 1689 switch (ret) {
312caa8e 1690 case 0:
14dd3ad8 1691 parse_body(env,xsinit);
9ebf26ad 1692 if (PL_unitcheckav) {
3c10abe3 1693 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1694 }
1695 if (PL_checkav) {
ca7b837b 1696 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1697 call_list(oldscope, PL_checkav);
9ebf26ad 1698 }
14dd3ad8
GS		 1699 ret = 0;
1700 break;
6224f72b
GS		 1701 case 1:
1702 STATUS_ALL_FAILURE;
924ba076 1703 /* FALLTHROUGH */
6224f72b
GS		 1704 case 2:
1705 /* my_exit() was called */
3280af22 1706 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 1707 LEAVE;
1708 FREETMPS;
03d9f026 1709 SET_CURSTASH(PL_defstash);
9ebf26ad 1710 if (PL_unitcheckav) {
3c10abe3 1711 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR		 1712 }
1713 if (PL_checkav) {
ca7b837b 1714 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1715 call_list(oldscope, PL_checkav);
9ebf26ad 1716 }
37038d91 1717 ret = STATUS_EXIT;
14dd3ad8 1718 break;
6224f72b 1719 case 3:
bf49b057 1720 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS		 1721 ret = 1;
1722 break;
6224f72b 1723 }
14dd3ad8
GS		 1724 JMPENV_POP;
1725 return ret;
1726}
1727
4a5df386
NC		 1728/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1729 miniperl, and we need to see those flags reflected in the values here. */
1730
1731/* What this returns is subject to change. Use the public interface in Config.
1732 */
1733static void
1734S_Internals_V(pTHX_ CV *cv)
1735{
1736 dXSARGS;
1737#ifdef LOCAL_PATCH_COUNT
1738 const int local_patch_count = LOCAL_PATCH_COUNT;
1739#else
1740 const int local_patch_count = 0;
1741#endif
2dc296d2 1742 const int entries = 3 + local_patch_count;
4a5df386 1743 int i;
fe1c5936 1744 static const char non_bincompat_options[] =
4a5df386
NC		 1745# ifdef DEBUGGING
1746 " DEBUGGING"
1747# endif
1748# ifdef NO_MATHOMS
0d311fbe 1749 " NO_MATHOMS"
4a5df386 1750# endif
59b86f4b
DM		 1751# ifdef NO_HASH_SEED
1752 " NO_HASH_SEED"
1753# endif
3b0e4ee2
MB		 1754# ifdef NO_TAINT_SUPPORT
1755 " NO_TAINT_SUPPORT"
1756# endif
cb26ef7a
MB		 1757# ifdef PERL_BOOL_AS_CHAR
1758 " PERL_BOOL_AS_CHAR"
1759# endif
93c10d60
FC		 1760# ifdef PERL_COPY_ON_WRITE
1761 " PERL_COPY_ON_WRITE"
1762# endif
4a5df386
NC		 1763# ifdef PERL_DISABLE_PMC
1764 " PERL_DISABLE_PMC"
1765# endif
1766# ifdef PERL_DONT_CREATE_GVSV
1767 " PERL_DONT_CREATE_GVSV"
1768# endif
9a044a43
NC		 1769# ifdef PERL_EXTERNAL_GLOB
1770 " PERL_EXTERNAL_GLOB"
1771# endif
59b86f4b
DM		 1772# ifdef PERL_HASH_FUNC_SIPHASH
1773 " PERL_HASH_FUNC_SIPHASH"
1774# endif
1775# ifdef PERL_HASH_FUNC_SDBM
1776 " PERL_HASH_FUNC_SDBM"
1777# endif
1778# ifdef PERL_HASH_FUNC_DJB2
1779 " PERL_HASH_FUNC_DJB2"
1780# endif
1781# ifdef PERL_HASH_FUNC_SUPERFAST
1782 " PERL_HASH_FUNC_SUPERFAST"
1783# endif
1784# ifdef PERL_HASH_FUNC_MURMUR3
1785 " PERL_HASH_FUNC_MURMUR3"
1786# endif
1787# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1788 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1789# endif
1790# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1791 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1792# endif
1793# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1794 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1795# endif
4a5df386
NC		 1796# ifdef PERL_IS_MINIPERL
1797 " PERL_IS_MINIPERL"
1798# endif
1799# ifdef PERL_MALLOC_WRAP
1800 " PERL_MALLOC_WRAP"
1801# endif
1802# ifdef PERL_MEM_LOG
1803 " PERL_MEM_LOG"
1804# endif
1805# ifdef PERL_MEM_LOG_NOIMPL
1806 " PERL_MEM_LOG_NOIMPL"
1807# endif
4e499636
DM		 1808# ifdef PERL_OP_PARENT
1809 " PERL_OP_PARENT"
1810# endif
59b86f4b
DM		 1811# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1812 " PERL_PERTURB_KEYS_DETERMINISTIC"
1813# endif
1814# ifdef PERL_PERTURB_KEYS_DISABLED
1815 " PERL_PERTURB_KEYS_DISABLED"
1816# endif
1817# ifdef PERL_PERTURB_KEYS_RANDOM
1818 " PERL_PERTURB_KEYS_RANDOM"
1819# endif
c3cf41ec
NC		 1820# ifdef PERL_PRESERVE_IVUV
1821 " PERL_PRESERVE_IVUV"
1822# endif
c051e30b
NC		 1823# ifdef PERL_RELOCATABLE_INCPUSH
1824 " PERL_RELOCATABLE_INCPUSH"
1825# endif
4a5df386
NC		 1826# ifdef PERL_USE_DEVEL
1827 " PERL_USE_DEVEL"
1828# endif
1829# ifdef PERL_USE_SAFE_PUTENV
1830 " PERL_USE_SAFE_PUTENV"
1831# endif
102b7877
YO		 1832# ifdef SILENT_NO_TAINT_SUPPORT
1833 " SILENT_NO_TAINT_SUPPORT"
1834# endif
a3749cf3
NC		 1835# ifdef UNLINK_ALL_VERSIONS
1836 " UNLINK_ALL_VERSIONS"
1837# endif
de618ee4
NC		 1838# ifdef USE_ATTRIBUTES_FOR_PERLIO
1839 " USE_ATTRIBUTES_FOR_PERLIO"
1840# endif
4a5df386
NC		 1841# ifdef USE_FAST_STDIO
1842 " USE_FAST_STDIO"
1843# endif
59b86f4b
DM		 1844# ifdef USE_HASH_SEED_EXPLICIT
1845 " USE_HASH_SEED_EXPLICIT"
1846# endif
98548bdf
NC		 1847# ifdef USE_LOCALE
1848 " USE_LOCALE"
1849# endif
98548bdf
NC		 1850# ifdef USE_LOCALE_CTYPE
1851 " USE_LOCALE_CTYPE"
1852# endif
6937817d
DD		 1853# ifdef WIN32_NO_REGISTRY
1854 " USE_NO_REGISTRY"
1855# endif
5a8d8935
NC		 1856# ifdef USE_PERL_ATOF
1857 " USE_PERL_ATOF"
1858# endif
0d311fbe
NC		 1859# ifdef USE_SITECUSTOMIZE
1860 " USE_SITECUSTOMIZE"
1861# endif
4a5df386
NC		 1862 ;
1863 PERL_UNUSED_ARG(cv);
d3db1514 1864 PERL_UNUSED_VAR(items);
4a5df386
NC		 1865
1866 EXTEND(SP, entries);
1867
1868 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1869 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1870 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1871
6baa8dbd
NT		 1872#ifndef PERL_BUILD_DATE
1873# ifdef __DATE__
1874# ifdef __TIME__
1875# define PERL_BUILD_DATE __DATE__ " " __TIME__
1876# else
1877# define PERL_BUILD_DATE __DATE__
1878# endif
1879# endif
1880#endif
1881
1882#ifdef PERL_BUILD_DATE
4a5df386 1883 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1884 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1885 SVs_TEMP));
4a5df386
NC		 1886#else
1887 PUSHs(&PL_sv_undef);
1888#endif
1889
4a5df386
NC		 1890 for (i = 1; i <= local_patch_count; i++) {
1891 /* This will be an undef, if PL_localpatches[i] is NULL. */
1892 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1893 }
1894
1895 XSRETURN(entries);
1896}
1897
be71fc8f
NC		 1898#define INCPUSH_UNSHIFT 0x01
1899#define INCPUSH_ADD_OLD_VERS 0x02
1900#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1901#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1902#define INCPUSH_NOT_BASEDIR 0x10
1903#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC		 1904#define INCPUSH_ADD_SUB_DIRS \
1905 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1906
312caa8e 1907STATIC void *
14dd3ad8 1908S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1909{
27da23d5 1910 dVAR;
2f9285f8 1911 PerlIO *rsfp;
312caa8e 1912 int argc = PL_origargc;
8f42b153 1913 char **argv = PL_origargv;
e1ec3a88 1914 const char *scriptname = NULL;
402582ca 1915 bool dosearch = FALSE;
eb578fdb 1916 char c;
737c24fc 1917 bool doextract = FALSE;
bd61b366 1918 const char *cddir = NULL;
ab019eaa 1919#ifdef USE_SITECUSTOMIZE
20ef40cf 1920 bool minus_f = FALSE;
ab019eaa 1921#endif
95670bde 1922 SV *linestr_sv = NULL;
5486870f 1923 bool add_read_e_script = FALSE;
87606032 1924 U32 lex_start_flags = 0;
009d90df 1925
ca7b837b 1926 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1927
6224f72b 1928 init_main_stash();
54310121 1929
c7030b81
NC		 1930 {
1931 const char *s;
6224f72b
GS		 1932 for (argc--,argv++; argc > 0; argc--,argv++) {
1933 if (argv[0][0] != '-' || !argv[0][1])
1934 break;
6224f72b
GS		 1935 s = argv[0]+1;
1936 reswitch:
47f56822 1937 switch ((c = *s)) {
729a02f2 1938 case 'C':
1d5472a9
GS		 1939#ifndef PERL_STRICT_CR
1940 case '\r':
1941#endif
6224f72b
GS		 1942 case ' ':
1943 case '0':
1944 case 'F':
1945 case 'a':
1946 case 'c':
1947 case 'd':
1948 case 'D':
1949 case 'h':
1950 case 'i':
1951 case 'l':
1952 case 'M':
1953 case 'm':
1954 case 'n':
1955 case 'p':
1956 case 's':
1957 case 'u':
1958 case 'U':
1959 case 'v':
599cee73
PM		 1960 case 'W':
1961 case 'X':
6224f72b 1962 case 'w':
97bd5664 1963 if ((s = moreswitches(s)))
6224f72b
GS		 1964 goto reswitch;
1965 break;
33b78306 1966
1dbad523 1967 case 't':
dc6d7f5c 1968#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1969 /* silently ignore */
dc6d7f5c 1970#elif defined(NO_TAINT_SUPPORT)
3231f579 1971 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 1972 "Cowardly refusing to run with -t or -T flags");
1973#else
22f7c9c9 1974 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM		 1975 if( !TAINTING_get ) {
1976 TAINT_WARN_set(TRUE);
1977 TAINTING_set(TRUE);
317ea90d 1978 }
284167a5 1979#endif
317ea90d
MS		 1980 s++;
1981 goto reswitch;
6224f72b 1982 case 'T':
dc6d7f5c 1983#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1984 /* silently ignore */
dc6d7f5c 1985#elif defined(NO_TAINT_SUPPORT)
3231f579 1986 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 1987 "Cowardly refusing to run with -t or -T flags");
1988#else
22f7c9c9 1989 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM		 1990 TAINTING_set(TRUE);
1991 TAINT_WARN_set(FALSE);
1992#endif
6224f72b
GS		 1993 s++;
1994 goto reswitch;
f86702cc 1995
bc9b29db
RH		 1996 case 'E':
1997 PL_minus_E = TRUE;
924ba076 1998 /* FALLTHROUGH */
6224f72b 1999 case 'e':
f20b2998 2000 forbid_setid('e', FALSE);
3280af22 2001 if (!PL_e_script) {
396482e1 2002 PL_e_script = newSVpvs("");
5486870f 2003 add_read_e_script = TRUE;
6224f72b
GS		 2004 }
2005 if (*++s)
3280af22 2006 sv_catpv(PL_e_script, s);
6224f72b 2007 else if (argv[1]) {
3280af22 2008 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS		 2009 argc--,argv++;
2010 }
2011 else
47f56822 2012 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2013 sv_catpvs(PL_e_script, "\n");
6224f72b 2014 break;
afe37c7d 2015
20ef40cf 2016 case 'f':
f5542d3a 2017#ifdef USE_SITECUSTOMIZE
20ef40cf 2018 minus_f = TRUE;
f5542d3a 2019#endif
20ef40cf
GA		 2020 s++;
2021 goto reswitch;
2022
6224f72b 2023 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2024 forbid_setid('I', FALSE);
bd61b366 2025 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS		 2026 argc--,argv++;
2027 }
6224f72b 2028 if (s && *s) {
0df16ed7 2029 STRLEN len = strlen(s);
55b4bc1c 2030 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS		 2031 }
2032 else
a67e862a 2033 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2034 break;
6224f72b 2035 case 'S':
f20b2998 2036 forbid_setid('S', FALSE);
6224f72b
GS		 2037 dosearch = TRUE;
2038 s++;
2039 goto reswitch;
2040 case 'V':
7edfd0ef
NC		 2041 {
2042 SV *opts_prog;
2043
7edfd0ef 2044 if (*++s != ':') {
37ca4a5b 2045 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC		 2046 }
2047 else {
2048 ++s;
2049 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2050 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC		 2051 0, s, 0);
2052 s += strlen(s);
2053 }
37ca4a5b 2054 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC		 2055 /* don't look for script or read stdin */
2056 scriptname = BIT_BUCKET;
2057 goto reswitch;
6224f72b 2058 }
6224f72b 2059 case 'x':
737c24fc 2060 doextract = TRUE;
6224f72b 2061 s++;
304334da 2062 if (*s)
f4c556ac 2063 cddir = s;
6224f72b
GS		 2064 break;
2065 case 0:
2066 break;
2067 case '-':
2068 if (!*++s || isSPACE(*s)) {
2069 argc--,argv++;
2070 goto switch_end;
2071 }
ee8bc8b7
NC		 2072 /* catch use of gnu style long options.
2073 Both of these exit immediately. */
2074 if (strEQ(s, "version"))
2075 minus_v();
2076 if (strEQ(s, "help"))
2077 usage();
6224f72b 2078 s--;
924ba076 2079 /* FALLTHROUGH */
6224f72b 2080 default:
cea2e8a9 2081 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW		 2082 }
2083 }
c7030b81
NC		 2084 }
2085
6224f72b 2086 switch_end:
54310121 2087
c7030b81
NC		 2088 {
2089 char *s;
2090
f675dbe5
CB		 2091 if (
2092#ifndef SECURE_INTERNAL_GETENV
284167a5 2093 !TAINTING_get &&
f675dbe5 2094#endif
cf756827 2095 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2096 {
9e0b0d62
KW		 2097 /* s points to static memory in getenv(), which may be overwritten at
2098 * any time; use a mortal copy instead */
2099 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2100
74288ac8
GS		 2101 while (isSPACE(*s))
2102 s++;
317ea90d 2103 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2104#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2105 /* silently ignore */
dc6d7f5c 2106#elif defined(NO_TAINT_SUPPORT)
3231f579 2107 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 2108 "Cowardly refusing to run with -t or -T flags");
2109#else
22f7c9c9 2110 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM		 2111 TAINTING_set(TRUE);
2112 TAINT_WARN_set(FALSE);
2113#endif
317ea90d 2114 }
74288ac8 2115 else {
bd61b366 2116 char *popt_copy = NULL;
74288ac8 2117 while (s && *s) {
54913509 2118 const char *d;
74288ac8
GS		 2119 while (isSPACE(*s))
2120 s++;
2121 if (*s == '-') {
2122 s++;
2123 if (isSPACE(*s))
2124 continue;
2125 }
4ea8f8fb 2126 d = s;
74288ac8
GS		 2127 if (!*s)
2128 break;
2b622f1a 2129 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2130 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS		 2131 while (++s && *s) {
2132 if (isSPACE(*s)) {
cf756827 2133 if (!popt_copy) {
bfa6c418
NC		 2134 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2135 s = popt_copy + (s - d);
2136 d = popt_copy;
cf756827 2137 }
4ea8f8fb
MS		 2138 *s++ = '\0';
2139 break;
2140 }
2141 }
1c4db469 2142 if (*d == 't') {
dc6d7f5c 2143#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2144 /* silently ignore */
dc6d7f5c 2145#elif defined(NO_TAINT_SUPPORT)
3231f579 2146 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 2147 "Cowardly refusing to run with -t or -T flags");
2148#else
2149 if( !TAINTING_get) {
2150 TAINT_WARN_set(TRUE);
2151 TAINTING_set(TRUE);
317ea90d 2152 }
284167a5 2153#endif
1c4db469 2154 } else {
97bd5664 2155 moreswitches(d);
1c4db469 2156 }
6224f72b 2157 }
6224f72b
GS		 2158 }
2159 }
c7030b81 2160 }
a0d0e21e 2161
c29067d7
CH		 2162 /* Set $^X early so that it can be used for relocatable paths in @INC */
2163 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2164 assert (!TAINT_get);
c29067d7 2165 TAINT;
e2051532 2166 set_caret_X();
c29067d7
CH		 2167 TAINT_NOT;
2168
43c0c913 2169#if defined(USE_SITECUSTOMIZE)
20ef40cf 2170 if (!minus_f) {
43c0c913 2171 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC		 2172 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2173 ie a q() operator with a NUL byte as a the delimiter. This avoids
2174 problems with pathnames containing (say) ' */
43c0c913
NC		 2175# ifdef PERL_IS_MINIPERL
2176 AV *const inc = GvAV(PL_incgv);
2177 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2178
2179 if (inc0) {
15870c5c
NC		 2180 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2181 it should be reported immediately as a build failure. */
43c0c913
NC		 2182 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2183 Perl_newSVpvf(aTHX_
147e3846 2184 "BEGIN { my $f = q%c%s%" SVf "/buildcustomize.pl%c; "
af26e4f2
FC		 2185 "do {local $!; -f $f }"
2186 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2187 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC		 2188 }
2189# else
2190 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2191 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD		 2192 if (raw_sitelib) {
2193 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2194 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2195 INCPUSH_CAN_RELOCATE);
2196 const char *const sitelib = SvPVX(sitelib_sv);
2197 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2198 Perl_newSVpvf(aTHX_
2199 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF		 2200 0, SVfARG(sitelib), 0,
2201 0, SVfARG(sitelib), 0));
bac5c4fc
JD		 2202 assert (SvREFCNT(sitelib_sv) == 1);
2203 SvREFCNT_dec(sitelib_sv);
2204 }
43c0c913 2205# endif
20ef40cf
GA		 2206 }
2207#endif
2208
6224f72b
GS		 2209 if (!scriptname)
2210 scriptname = argv[0];
3280af22 2211 if (PL_e_script) {
6224f72b
GS		 2212 argc++,argv--;
2213 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2214 }
bd61b366 2215 else if (scriptname == NULL) {
6224f72b
GS		 2216#ifdef MSDOS
2217 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2218 moreswitches("h");
6224f72b
GS		 2219#endif
2220 scriptname = "-";
2221 }
2222
284167a5 2223 assert (!TAINT_get);
2cace6ac 2224 init_perllib();
6224f72b 2225
a52eba0e 2226 {
f20b2998 2227 bool suidscript = FALSE;
829372d3 2228
8d113837 2229 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC		 2230 if (!rsfp) {
2231 rsfp = PerlIO_stdin();
87606032 2232 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2233 }
6224f72b 2234
b24bc095 2235 validate_suid(rsfp);
6224f72b 2236
64ca3a65 2237#ifndef PERL_MICRO
a52eba0e
NC		 2238# if defined(SIGCHLD) || defined(SIGCLD)
2239 {
2240# ifndef SIGCHLD
2241# define SIGCHLD SIGCLD
2242# endif
2243 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2244 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC		 2245 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2246 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC		 2247 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2248 }
0b5b802d 2249 }
a52eba0e 2250# endif
64ca3a65 2251#endif
0b5b802d 2252
737c24fc 2253 if (doextract) {
faef540c 2254
f20b2998 2255 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC		 2256 setuid scripts. */
2257 forbid_setid('x', suidscript);
f20b2998 2258 /* Hence you can't get here if suidscript is true */
faef540c 2259
95670bde
NC		 2260 linestr_sv = newSV_type(SVt_PV);
2261 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2262 find_beginning(linestr_sv, rsfp);
a52eba0e
NC		 2263 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2264 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2265 }
f4c556ac 2266 }
6224f72b 2267
ea726b52 2268 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS		 2269 CvUNIQUE_on(PL_compcv);
2270
eacbb379 2271 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2272
dd69841b
BB		 2273 PL_isarev = newHV();
2274
0c4f7ff0 2275 boot_core_PerlIO();
6224f72b 2276 boot_core_UNIVERSAL();
e1a479c5 2277 boot_core_mro();
4a5df386 2278 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS		 2279
2280 if (xsinit)
acfe0abc 2281 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2282#ifndef PERL_MICRO
739a0b84 2283#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2284 init_os_extras();
6224f72b 2285#endif
64ca3a65 2286#endif
6224f72b 2287
29209bc5 2288#ifdef USE_SOCKS
1b9c9cf5
DH		 2289# ifdef HAS_SOCKS5_INIT
2290 socks5_init(argv[0]);
2291# else
29209bc5 2292 SOCKSinit(argv[0]);
1b9c9cf5 2293# endif
ac27b0f5 2294#endif
29209bc5 2295
6224f72b
GS		 2296 init_predump_symbols();
2297 /* init_postdump_symbols not currently designed to be called */
2298 /* more than once (ENV isn't cleared first, for example) */
2299 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2300 if (!PL_do_undump)
6224f72b
GS		 2301 init_postdump_symbols(argc,argv,env);
2302
27da23d5
JH		 2303 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2304 * or explicitly in some platforms.
73e1bd1a 2305 * PL_utf8locale is conditionally turned on by
085a54d9 2306 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2307 * look like the user wants to use UTF-8. */
a0fd4948 2308#if defined(__SYMBIAN32__)
27da23d5
JH		 2309 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2310#endif
e27b5b51 2311# ifndef PERL_IS_MINIPERL
06e66572
JH		 2312 if (PL_unicode) {
2313 /* Requires init_predump_symbols(). */
a05d7ebb 2314 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH		 2315 IO* io;
2316 PerlIO* fp;
2317 SV* sv;
2318
a05d7ebb 2319 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2320 * and the default open disciplines. */
a05d7ebb
JH		 2321 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2322 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2323 (fp = IoIFP(io)))
2324 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2325 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2326 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2327 (fp = IoOFP(io)))
2328 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2329 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2330 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2331 (fp = IoOFP(io)))
2332 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2333 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC		 2334 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2335 SVt_PV)))) {
a05d7ebb
JH		 2336 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2337 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2338 if (in) {
2339 if (out)
76f68e9b 2340 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2341 else
76f68e9b 2342 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH		 2343 }
2344 else if (out)
76f68e9b 2345 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH		 2346 SvSETMAGIC(sv);
2347 }
b310b053
JH		 2348 }
2349 }
e27b5b51 2350#endif
b310b053 2351
c7030b81
NC		 2352 {
2353 const char *s;
4ffa73a3
JH		 2354 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2355 if (strEQ(s, "unsafe"))
2356 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2357 else if (strEQ(s, "safe"))
2358 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2359 else
2360 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2361 }
c7030b81 2362 }
4ffa73a3 2363
81d86705 2364
87606032 2365 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2366 SvREFCNT_dec(linestr_sv);
95670bde 2367
219f7226 2368 PL_subname = newSVpvs("main");
6224f72b 2369
5486870f
DM		 2370 if (add_read_e_script)
2371 filter_add(read_e_script, NULL);
2372
6224f72b
GS		 2373 /* now parse the script */
2374
93189314 2375 SETERRNO(0,SS_NORMAL);
28ac2b49 2376 if (yyparse(GRAMPROG) || PL_parser->error_count) {
c77da5ff 2377 abort_execution("", PL_origfilename);
6224f72b 2378 }
57843af0 2379 CopLINE_set(PL_curcop, 0);
03d9f026 2380 SET_CURSTASH(PL_defstash);
3280af22
NIS		 2381 if (PL_e_script) {
2382 SvREFCNT_dec(PL_e_script);
a0714e2c 2383 PL_e_script = NULL;
6224f72b
GS		 2384 }
2385
3280af22 2386 if (PL_do_undump)
6224f72b
GS		 2387 my_unexec();
2388
57843af0
GS		 2389 if (isWARN_ONCE) {
2390 SAVECOPFILE(PL_curcop);
2391 SAVECOPLINE(PL_curcop);
3280af22 2392 gv_check(PL_defstash);
57843af0 2393 }
6224f72b
GS		 2394
2395 LEAVE;
2396 FREETMPS;
2397
2398#ifdef MYMALLOC
f6a607bc
RGS		 2399 {
2400 const char *s;
22ff3130
HS		 2401 UV uv;
2402 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2403 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2404 dump_mstats("after compilation:");
f6a607bc 2405 }
6224f72b
GS		 2406#endif
2407
2408 ENTER;
febb3a6d 2409 PL_restartjmpenv = NULL;
3280af22 2410 PL_restartop = 0;
312caa8e 2411 return NULL;
6224f72b
GS		 2412}
2413
954c1994
GS		 2414/*
2415=for apidoc perl_run
2416
2417Tells a Perl interpreter to run. See L<perlembed>.
2418
2419=cut
2420*/
2421
6224f72b 2422int
0cb96387 2423perl_run(pTHXx)
6224f72b 2424{
6224f72b 2425 I32 oldscope;
14dd3ad8 2426 int ret = 0;
db36c5a1 2427 dJMPENV;
6224f72b 2428
7918f24d
NC		 2429 PERL_ARGS_ASSERT_PERL_RUN;
2430#ifndef MULTIPLICITY
ed6c66dd 2431 PERL_UNUSED_ARG(my_perl);
7918f24d 2432#endif
9d4ba2ae 2433
3280af22 2434 oldscope = PL_scopestack_ix;
96e176bf
CL		 2435#ifdef VMS
2436 VMSISH_HUSHED = 0;
2437#endif
6224f72b 2438
14dd3ad8 2439 JMPENV_PUSH(ret);
6224f72b
GS		 2440 switch (ret) {
2441 case 1:
2442 cxstack_ix = -1; /* start context stack again */
312caa8e 2443 goto redo_body;
14dd3ad8 2444 case 0: /* normal completion */
14dd3ad8
GS		 2445 redo_body:
2446 run_body(oldscope);
924ba076 2447 /* FALLTHROUGH */
14dd3ad8 2448 case 2: /* my_exit() */
3280af22 2449 while (PL_scopestack_ix > oldscope)
6224f72b
GS		 2450 LEAVE;
2451 FREETMPS;
03d9f026 2452 SET_CURSTASH(PL_defstash);
3a1ee7e8 2453 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2454 PL_endav && !PL_minus_c) {
ca7b837b 2455 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2456 call_list(oldscope, PL_endav);
9ebf26ad 2457 }
6224f72b
GS		 2458#ifdef MYMALLOC
2459 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2460 dump_mstats("after execution: ");
2461#endif
37038d91 2462 ret = STATUS_EXIT;
14dd3ad8 2463 break;
6224f72b 2464 case 3:
312caa8e
CS		 2465 if (PL_restartop) {
2466 POPSTACK_TO(PL_mainstack);
2467 goto redo_body;
6224f72b 2468 }
5637ef5b 2469 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2470 FREETMPS;
14dd3ad8
GS		 2471 ret = 1;
2472 break;
6224f72b
GS		 2473 }
2474
14dd3ad8
GS		 2475 JMPENV_POP;
2476 return ret;
312caa8e
CS		 2477}
2478
dd374669 2479STATIC void
14dd3ad8
GS		 2480S_run_body(pTHX_ I32 oldscope)
2481{
d3b97530
DM		 2482 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2483 PL_sawampersand ? "Enabling" : "Omitting",
2484 (unsigned int)(PL_sawampersand)));
6224f72b 2485
3280af22 2486 if (!PL_restartop) {
cf2782cd 2487#ifdef DEBUGGING
f0e3f042
CS		 2488 if (DEBUG_x_TEST || DEBUG_B_TEST)
2489 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC		 2490 if (!DEBUG_q_TEST)
2491 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2492#endif
6224f72b 2493
3280af22 2494 if (PL_minus_c) {
bf49b057 2495 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS		 2496 my_exit(0);
2497 }
3280af22 2498 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2499 PL_DBsingle_iv = 1;
9ebf26ad 2500 if (PL_initav) {
ca7b837b 2501 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2502 call_list(oldscope, PL_initav);
9ebf26ad 2503 }
f1fac472 2504#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC		 2505 if (PL_main_root && PL_main_root->op_slabbed)
2506 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2507#endif
6224f72b
GS		 2508 }
2509
2510 /* do it */
2511
ca7b837b 2512 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2513
3280af22 2514 if (PL_restartop) {
febb3a6d 2515 PL_restartjmpenv = NULL;
533c011a 2516 PL_op = PL_restartop;
3280af22 2517 PL_restartop = 0;
cea2e8a9 2518 CALLRUNOPS(aTHX);
6224f72b 2519 }
3280af22
NIS		 2520 else if (PL_main_start) {
2521 CvDEPTH(PL_main_cv) = 1;
533c011a 2522 PL_op = PL_main_start;
cea2e8a9 2523 CALLRUNOPS(aTHX);
6224f72b 2524 }
f6b3007c 2525 my_exit(0);
e5964223 2526 NOT_REACHED; /* NOTREACHED */
6224f72b
GS		 2527}
2528
954c1994 2529/*
ccfc67b7
JH		 2530=head1 SV Manipulation Functions
2531
954c1994
GS		 2532=for apidoc p||get_sv
2533
64ace3f8 2534Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2535C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC		 2536Perl variable does not exist then it will be created. If C<flags> is zero
2537and the variable does not exist then NULL is returned.
954c1994
GS		 2538
2539=cut
2540*/
2541
6224f72b 2542SV*
64ace3f8 2543Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS		 2544{
2545 GV *gv;
7918f24d
NC		 2546
2547 PERL_ARGS_ASSERT_GET_SV;
2548
64ace3f8 2549 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS		 2550 if (gv)
2551 return GvSV(gv);
a0714e2c 2552 return NULL;
6224f72b
GS		 2553}
2554
954c1994 2555/*
ccfc67b7
JH		 2556=head1 Array Manipulation Functions
2557
954c1994
GS		 2558=for apidoc p||get_av
2559
f0b90de1
SF		 2560Returns the AV of the specified Perl global or package array with the given
2561name (so it won't work on lexical variables). C<flags> are passed
72d33970 2562to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC		 2563Perl variable does not exist then it will be created. If C<flags> is zero
2564and the variable does not exist then NULL is returned.
954c1994 2565
f0b90de1
SF		 2566Perl equivalent: C<@{"$name"}>.
2567
954c1994
GS		 2568=cut
2569*/
2570
6224f72b 2571AV*
cbfd0a87 2572Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2573{
cbfd0a87 2574 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC		 2575
2576 PERL_ARGS_ASSERT_GET_AV;
2577
cbfd0a87 2578 if (flags)
6224f72b
GS		 2579 return GvAVn(gv);
2580 if (gv)
2581 return GvAV(gv);
7d49f689 2582 return NULL;
6224f72b
GS		 2583}
2584
954c1994 2585/*
ccfc67b7
JH		 2586=head1 Hash Manipulation Functions
2587
954c1994
GS		 2588=for apidoc p||get_hv
2589
6673a63c 2590Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2591C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2592Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2593and the variable does not exist then C<NULL> is returned.
954c1994
GS		 2594
2595=cut
2596*/
2597
6224f72b 2598HV*
6673a63c 2599Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2600{
6673a63c 2601 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC		 2602
2603 PERL_ARGS_ASSERT_GET_HV;
2604
6673a63c 2605 if (flags)
a0d0e21e
LW		 2606 return GvHVn(gv);
2607 if (gv)
2608 return GvHV(gv);
5c284bb0 2609 return NULL;
a0d0e21e
LW		 2610}
2611
954c1994 2612/*
ccfc67b7
JH		 2613=head1 CV Manipulation Functions
2614
780a5241
NC		 2615=for apidoc p||get_cvn_flags
2616
2617Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2618C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC		 2619exist then it will be declared (which has the same effect as saying
2620C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2621then NULL is returned.
2622
954c1994
GS		 2623=for apidoc p||get_cv
2624
780a5241 2625Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS		 2626
2627=cut
2628*/
2629
a0d0e21e 2630CV*
780a5241 2631Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2632{
780a5241 2633 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC		 2634
2635 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2636
334dda80
FC		 2637 /* XXX this is probably not what they think they're getting.
2638 * It has the same effect as "sub name;", i.e. just a forward
2639 * declaration! */
780a5241 2640 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2641 return newSTUB(gv,0);
780a5241 2642 }
a0d0e21e 2643 if (gv)
8ebc5c01 2644 return GvCVu(gv);
601f1833 2645 return NULL;
a0d0e21e
LW		 2646}
2647
2c67934f
NC		 2648/* Nothing in core calls this now, but we can't replace it with a macro and
2649 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC		 2650CV*
2651Perl_get_cv(pTHX_ const char *name, I32 flags)
2652{
7918f24d
NC		 2653 PERL_ARGS_ASSERT_GET_CV;
2654
780a5241
NC		 2655 return get_cvn_flags(name, strlen(name), flags);
2656}
2657
79072805
LW		 2658/* Be sure to refetch the stack pointer after calling these routines. */
2659
954c1994 2660/*
ccfc67b7
JH		 2661
2662=head1 Callback Functions
2663
954c1994
GS		 2664=for apidoc p||call_argv
2665
f0b90de1 2666Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2667with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2668L<perlcall>.
f0b90de1
SF		 2669
2670Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS		 2671
2672=cut
2673*/
2674
a0d0e21e 2675I32
5aaab254 2676Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2677
8ac85365
NIS		 2678 /* See G_* flags in cop.h */
2679 /* null terminated arg list */
8990e307 2680{
a0d0e21e 2681 dSP;
8990e307 2682
7918f24d
NC		 2683 PERL_ARGS_ASSERT_CALL_ARGV;
2684
924508f0 2685 PUSHMARK(SP);
3dc78631
DM		 2686 while (*argv) {
2687 mXPUSHs(newSVpv(*argv,0));
2688 argv++;
8990e307 2689 }
3dc78631 2690 PUTBACK;
864dbfa3 2691 return call_pv(sub_name, flags);
8990e307
LW		 2692}
2693
954c1994
GS		 2694/*
2695=for apidoc p||call_pv
2696
2697Performs a callback to the specified Perl sub. See L<perlcall>.
2698
2699=cut
2700*/
2701
a0d0e21e 2702I32
864dbfa3 2703Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS		 2704 /* name of the subroutine */
2705 /* See G_* flags in cop.h */
a0d0e21e 2706{
7918f24d
NC		 2707 PERL_ARGS_ASSERT_CALL_PV;
2708
0da0e728 2709 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW		 2710}
2711
954c1994
GS		 2712/*
2713=for apidoc p||call_method
2714
2715Performs a callback to the specified Perl method. The blessed object must
2716be on the stack. See L<perlcall>.
2717
2718=cut
2719*/
2720
a0d0e21e 2721I32
864dbfa3 2722Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS		 2723 /* name of the subroutine */
2724 /* See G_* flags in cop.h */
a0d0e21e 2725{
46ca9bac 2726 STRLEN len;
c106c2be 2727 SV* sv;
7918f24d
NC		 2728 PERL_ARGS_ASSERT_CALL_METHOD;
2729
46ca9bac 2730 len = strlen(methname);
c106c2be
RZ		 2731 sv = flags & G_METHOD_NAMED
2732 ? sv_2mortal(newSVpvn_share(methname, len,0))
2733 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2734
c106c2be 2735 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW		 2736}
2737
2738/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS		 2739/*
2740=for apidoc p||call_sv
2741
078e2213
TC		 2742Performs a callback to the Perl sub specified by the SV.
2743
7c0c544c 2744If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC		 2745SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2746or C<SvPV(sv)> will be used as the name of the sub to call.
2747
2748If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2749C<SvPV(sv)> will be used as the name of the method to call.
2750
2751If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2752the name of the method to call.
2753
2754Some other values are treated specially for internal use and should
2755not be depended on.
2756
2757See L<perlcall>.
954c1994
GS		 2758
2759=cut
2760*/
2761
a0d0e21e 2762I32
001d637e 2763Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2764 /* See G_* flags in cop.h */
a0d0e21e 2765{
5b434c73 2766 dVAR;
a0d0e21e 2767 LOGOP myop; /* fake syntax tree node */
b46e009d 2768 METHOP method_op;
aa689395 2769 I32 oldmark;
8ea43dc8 2770 VOL I32 retval = 0;
54310121 2771 bool oldcatch = CATCH_GET;
6224f72b 2772 int ret;
c4420975 2773 OP* const oldop = PL_op;
db36c5a1 2774 dJMPENV;
1e422769 2775
7918f24d
NC		 2776 PERL_ARGS_ASSERT_CALL_SV;
2777
a0d0e21e
LW		 2778 if (flags & G_DISCARD) {
2779 ENTER;
2780 SAVETMPS;
2781 }
2f8edad0
NC		 2782 if (!(flags & G_WANT)) {
2783 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2784 */
2785 flags |= G_SCALAR;
2786 }
a0d0e21e 2787
aa689395 2788 Zero(&myop, 1, LOGOP);
f51d4af5 2789 if (!(flags & G_NOARGS))
aa689395 2790 myop.op_flags |= OPf_STACKED;
4f911530 2791 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2792 SAVEOP();
533c011a 2793 PL_op = (OP*)&myop;
aa689395 2794
8c9009ad 2795 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD		 2796 dSP;
2797 EXTEND(SP, 1);
8c9009ad
DD		 2798 PUSHs(sv);
2799 PUTBACK;
5b434c73 2800 }
aa689395 2801 oldmark = TOPMARK;
a0d0e21e 2802
3280af22 2803 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2804 /* Handle first BEGIN of -d. */
3280af22 2805 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP		 2806 /* Try harder, since this may have been a sighandler, thus
2807 * curstash may be meaningless. */
ea726b52 2808 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2809 && !(flags & G_NODEBUG))
5ff48db8 2810 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2811
c106c2be 2812 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2813 Zero(&method_op, 1, METHOP);
2814 method_op.op_next = (OP*)&myop;
2815 PL_op = (OP*)&method_op;
c106c2be 2816 if ( flags & G_METHOD_NAMED ) {
b46e009d 2817 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2818 method_op.op_type = OP_METHOD_NAMED;
2819 method_op.op_u.op_meth_sv = sv;
c106c2be 2820 } else {
b46e009d 2821 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2822 method_op.op_type = OP_METHOD;
c106c2be
RZ		 2823 }
2824 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2825 myop.op_type = OP_ENTERSUB;
968b3946
GS		 2826 }
2827
312caa8e 2828 if (!(flags & G_EVAL)) {
0cdb2077 2829 CATCH_SET(TRUE);
d6f07c05 2830 CALL_BODY_SUB((OP*)&myop);
312caa8e 2831 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2832 CATCH_SET(oldcatch);
312caa8e
CS		 2833 }
2834 else {
8e90e786 2835 I32 old_cxix;
d78bda3d 2836 myop.op_other = (OP*)&myop;
101d6365 2837 (void)POPMARK;
8e90e786 2838 old_cxix = cxstack_ix;
274ed8ae 2839 create_eval_scope(NULL, flags|G_FAKINGEVAL);
c318a6ee 2840 INCMARK;
a0d0e21e 2841
14dd3ad8 2842 JMPENV_PUSH(ret);
edb2152a 2843
6224f72b
GS		 2844 switch (ret) {
2845 case 0:
14dd3ad8 2846 redo_body:
d6f07c05 2847 CALL_BODY_SUB((OP*)&myop);
312caa8e 2848 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2849 if (!(flags & G_KEEPERR)) {
ab69dbc2 2850 CLEAR_ERRSV();
8433848b 2851 }
a0d0e21e 2852 break;
6224f72b 2853 case 1:
f86702cc 2854 STATUS_ALL_FAILURE;
924ba076 2855 /* FALLTHROUGH */
6224f72b 2856 case 2:
a0d0e21e 2857 /* my_exit() was called */
03d9f026 2858 SET_CURSTASH(PL_defstash);
a0d0e21e 2859 FREETMPS;
14dd3ad8 2860 JMPENV_POP;
f86702cc 2861 my_exit_jump();
e5964223 2862 NOT_REACHED; /* NOTREACHED */
6224f72b 2863 case 3:
3280af22 2864 if (PL_restartop) {
febb3a6d 2865 PL_restartjmpenv = NULL;
533c011a 2866 PL_op = PL_restartop;
3280af22 2867 PL_restartop = 0;
312caa8e 2868 goto redo_body;
a0d0e21e 2869 }
3280af22 2870 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2871 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW		 2872 retval = 0;
2873 else {
2874 retval = 1;
3280af22 2875 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2876 }
312caa8e 2877 break;
a0d0e21e 2878 }
a0d0e21e 2879
8e90e786
DM		 2880 /* if we croaked, depending on how we croaked the eval scope
2881 * may or may not have already been popped */
2882 if (cxstack_ix > old_cxix) {
2883 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2884 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2885 delete_eval_scope();
8e90e786 2886 }
14dd3ad8 2887 JMPENV_POP;
a0d0e21e 2888 }
1e422769 2889
a0d0e21e 2890 if (flags & G_DISCARD) {
3280af22 2891 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW		 2892 retval = 0;
2893 FREETMPS;
2894 LEAVE;
2895 }
533c011a 2896 PL_op = oldop;
a0d0e21e
LW		 2897 return retval;
2898}
2899
6e72f9df 2900/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2901
954c1994
GS		 2902/*
2903=for apidoc p||eval_sv
2904
72d33970 2905Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2906as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS		 2907
2908=cut
2909*/
2910
a0d0e21e 2911I32
864dbfa3 2912Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2913
8ac85365 2914 /* See G_* flags in cop.h */
a0d0e21e 2915{
97aff369 2916 dVAR;
a0d0e21e 2917 UNOP myop; /* fake syntax tree node */
5b434c73 2918 VOL I32 oldmark;
8ea43dc8 2919 VOL I32 retval = 0;
6224f72b 2920 int ret;
c4420975 2921 OP* const oldop = PL_op;
db36c5a1 2922 dJMPENV;
84902520 2923
7918f24d
NC		 2924 PERL_ARGS_ASSERT_EVAL_SV;
2925
4633a7c4
LW		 2926 if (flags & G_DISCARD) {
2927 ENTER;
2928 SAVETMPS;
2929 }
2930
462e5cf6 2931 SAVEOP();
533c011a 2932 PL_op = (OP*)&myop;
5ff48db8 2933 Zero(&myop, 1, UNOP);
5b434c73
DD		 2934 {
2935 dSP;
2936 oldmark = SP - PL_stack_base;
2937 EXTEND(SP, 1);
2938 PUSHs(sv);
2939 PUTBACK;
2940 }
79072805 2941
4633a7c4
LW		 2942 if (!(flags & G_NOARGS))
2943 myop.op_flags = OPf_STACKED;
6e72f9df 2944 myop.op_type = OP_ENTEREVAL;
4f911530 2945 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP		 2946 if (flags & G_KEEPERR)
2947 myop.op_flags |= OPf_SPECIAL;
a1941760
DM		 2948
2949 if (flags & G_RE_REPARSING)
2950 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2951
dedbcade 2952 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 2953 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM		 2954 TAINT_PROPER("eval_sv()");
2955
14dd3ad8 2956 JMPENV_PUSH(ret);
6224f72b
GS		 2957 switch (ret) {
2958 case 0:
14dd3ad8 2959 redo_body:
2ba65d5f
DM		 2960 if (PL_op == (OP*)(&myop)) {
2961 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2962 if (!PL_op)
2963 goto fail; /* failed in compilation */
2964 }
4aca2f62 2965 CALLRUNOPS(aTHX);
312caa8e 2966 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2967 if (!(flags & G_KEEPERR)) {
ab69dbc2 2968 CLEAR_ERRSV();
8433848b 2969 }
4633a7c4 2970 break;
6224f72b 2971 case 1:
f86702cc 2972 STATUS_ALL_FAILURE;
924ba076 2973 /* FALLTHROUGH */
6224f72b 2974 case 2:
4633a7c4 2975 /* my_exit() was called */
03d9f026 2976 SET_CURSTASH(PL_defstash);
4633a7c4 2977 FREETMPS;
14dd3ad8 2978 JMPENV_POP;
f86702cc 2979 my_exit_jump();
e5964223 2980 NOT_REACHED; /* NOTREACHED */
6224f72b 2981 case 3:
3280af22 2982 if (PL_restartop) {
febb3a6d 2983 PL_restartjmpenv = NULL;
533c011a 2984 PL_op = PL_restartop;
3280af22 2985 PL_restartop = 0;
312caa8e 2986 goto redo_body;
4633a7c4 2987 }
4aca2f62 2988 fail:
3280af22 2989 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2990 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW		 2991 retval = 0;
2992 else {
2993 retval = 1;
3280af22 2994 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2995 }
312caa8e 2996 break;
4633a7c4
LW		 2997 }
2998
14dd3ad8 2999 JMPENV_POP;
4633a7c4 3000 if (flags & G_DISCARD) {
3280af22 3001 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW		 3002 retval = 0;
3003 FREETMPS;
3004 LEAVE;
3005 }
533c011a 3006 PL_op = oldop;
4633a7c4
LW		 3007 return retval;
3008}
3009
954c1994
GS		 3010/*
3011=for apidoc p||eval_pv
3012
422791e4 3013Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS		 3014
3015=cut
3016*/
3017
137443ea 3018SV*
864dbfa3 3019Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3020{
137443ea
PP		 3021 SV* sv = newSVpv(p, 0);
3022
7918f24d
NC		 3023 PERL_ARGS_ASSERT_EVAL_PV;
3024
864dbfa3 3025 eval_sv(sv, G_SCALAR);
137443ea
PP		 3026 SvREFCNT_dec(sv);
3027
ed1786ad
DD		 3028 {
3029 dSP;
3030 sv = POPs;
3031 PUTBACK;
3032 }
137443ea 3033
eed484f9
DD		 3034 /* just check empty string or undef? */
3035 if (croak_on_error) {
3036 SV * const errsv = ERRSV;
3037 if(SvTRUE_NN(errsv))
3038 /* replace with croak_sv? */
3039 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3040 }
137443ea
PP		 3041
3042 return sv;
3043}
3044
4633a7c4
LW		 3045/* Require a module. */
3046
954c1994 3047/*
ccfc67b7
JH		 3048=head1 Embedding Functions
3049
954c1994
GS		 3050=for apidoc p||require_pv
3051
7d3fb230
BS		 3052Tells Perl to C<require> the file named by the string argument. It is
3053analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3054implemented that way; consider using load_module instead.
954c1994 3055
7d3fb230 3056=cut */
954c1994 3057
4633a7c4 3058void
864dbfa3 3059Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3060{
d3acc0f7 3061 dSP;
97aff369 3062 SV* sv;
7918f24d
NC		 3063
3064 PERL_ARGS_ASSERT_REQUIRE_PV;
3065
e788e7d3 3066 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC		 3067 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3068 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3069 POPSTACK;
79072805
LW		 3070}
3071
76e3520e 3072STATIC void
b6f82619 3073S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3074{
ab821d7f 3075 /* This message really ought to be max 23 lines.
75c72d73 3076 * Removed -h because the user already knows that option. Others? */
fb73857a 3077
1566c39d
NC		 3078 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3079 minimum of 509 character string literals. */
27da23d5 3080 static const char * const usage_msg[] = {
1566c39d
NC		 3081" -0[octal] specify record separator (\\0, if no argument)\n"
3082" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3083" -C[number/list] enables the listed Unicode features\n"
3084" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3085" -d[:debugger] run program under debugger\n"
3086" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3087" -e program one line of program (several -e's allowed, omit programfile)\n"
3088" -E program like -e, but enables all optional features\n"
3089" -f don't do $sitelib/sitecustomize.pl at startup\n"
3090" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3091" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3092" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3093" -l[octal] enable line ending processing, specifies line terminator\n"
3094" -[mM][-]module execute \"use/no module...\" before executing program\n"
3095" -n assume \"while (<>) { ... }\" loop around program\n"
3096" -p assume loop like -n but print line also, like sed\n"
3097" -s enable rudimentary parsing for switches after programfile\n"
3098" -S look for programfile using PATH environment variable\n",
3099" -t enable tainting warnings\n"
3100" -T enable tainting checks\n"
3101" -u dump core after parsing program\n"
3102" -U allow unsafe operations\n"
3103" -v print version, patchlevel and license\n"
3104" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3105" -w enable many useful warnings\n"
1566c39d
NC		 3106" -W enable all warnings\n"
3107" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3108" -X disable all warnings\n"
3109" \n"
3110"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP		 3111NULL
3112};
27da23d5 3113 const char * const *p = usage_msg;
1566c39d 3114 PerlIO *out = PerlIO_stdout();
fb73857a 3115
1566c39d
NC		 3116 PerlIO_printf(out,
3117 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3118 PL_origargv[0]);
fb73857a 3119 while (*p)
1566c39d 3120 PerlIO_puts(out, *p++);
b6f82619 3121 my_exit(0);
4633a7c4
LW		 3122}
3123
b4ab917c
DM		 3124/* convert a string of -D options (or digits) into an int.
3125 * sets *s to point to the char after the options */
3126
3127#ifdef DEBUGGING
3128int
e1ec3a88 3129Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3130{
27da23d5 3131 static const char * const usage_msgd[] = {
651b8f1a
NC		 3132 " Debugging flag values: (see also -d)\n"
3133 " p Tokenizing and parsing (with v, displays parse stack)\n"
3134 " s Stack snapshots (with v, displays all stacks)\n"
3135 " l Context (loop) stack processing\n"
3136 " t Trace execution\n"
3137 " o Method and overloading resolution\n",
3138 " c String/numeric conversions\n"
3139 " P Print profiling info, source file input state\n"
3140 " m Memory and SV allocation\n"
3141 " f Format processing\n"
3142 " r Regular expression parsing and execution\n"
3143 " x Syntax tree dump\n",
3144 " u Tainting checks\n"
3145 " H Hash dump -- usurps values()\n"
3146 " X Scratchpad allocation\n"
3147 " D Cleaning up\n"
56967202 3148 " S Op slab allocation\n"
651b8f1a
NC		 3149 " T Tokenising\n"
3150 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3151 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3152 " v Verbose: use in conjunction with other flags\n"
3153 " C Copy On Write\n"
3154 " A Consistency checks on internal structures\n"
3155 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3156 " M trace smart match resolution\n"
3157 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3158 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3159 " i trace PerlIO layer processing\n",
e6e64d9b
JC		 3160 NULL
3161 };
22ff3130 3162 UV uv = 0;
7918f24d
NC		 3163
3164 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3165
b4ab917c
DM		 3166 if (isALPHA(**s)) {
3167 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3168 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3169
0eb30aeb 3170 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3171 const char * const d = strchr(debopts,**s);
b4ab917c 3172 if (d)
22ff3130 3173 uv |= 1 << (d - debopts);
b4ab917c 3174 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC		 3175 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3176 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM		 3177 }
3178 }
e6e64d9b 3179 else if (isDIGIT(**s)) {
96e440d2 3180 const char* e;
22ff3130 3181 if (grok_atoUV(*s, &uv, &e))
96e440d2 3182 *s = e;
0eb30aeb 3183 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3184 }
ddcf8bc1 3185 else if (givehelp) {
06e869a4 3186 const char *const *p = usage_msgd;
651b8f1a 3187 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3188 }
22ff3130 3189 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM		 3190}
3191#endif
3192
79072805
LW		 3193/* This routine handles any switches that can be given during run */
3194
c7030b81
NC		 3195const char *
3196Perl_moreswitches(pTHX_ const char *s)
79072805 3197{
27da23d5 3198 dVAR;
84c133a0 3199 UV rschar;
0544e6df 3200 const char option = *s; /* used to remember option in -m/-M code */
79072805 3201
7918f24d
NC		 3202 PERL_ARGS_ASSERT_MORESWITCHES;
3203
79072805
LW		 3204 switch (*s) {
3205 case '0':
a863c7d1 3206 {
f2095865 3207 I32 flags = 0;
a3b680e6 3208 STRLEN numlen;
f2095865
JH		 3209
3210 SvREFCNT_dec(PL_rs);
3211 if (s[1] == 'x' && s[2]) {
a3b680e6 3212 const char *e = s+=2;
f2095865
JH		 3213 U8 *tmps;
3214
a3b680e6
AL		 3215 while (*e)
3216 e++;
f2095865
JH		 3217 numlen = e - s;
3218 flags = PERL_SCAN_SILENT_ILLDIGIT;
3219 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3220 if (s + numlen < e) {
3221 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3222 numlen = 0;
3223 s--;
3224 }
396482e1 3225 PL_rs = newSVpvs("");
10656159 3226 tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865 3227 uvchr_to_utf8(tmps, rschar);
5f560d8a 3228 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH		 3229 SvUTF8_on(PL_rs);
3230 }
3231 else {
3232 numlen = 4;
3233 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3234 if (rschar & ~((U8)~0))
3235 PL_rs = &PL_sv_undef;
3236 else if (!rschar && numlen >= 2)
396482e1 3237 PL_rs = newSVpvs("");
f2095865
JH		 3238 else {
3239 char ch = (char)rschar;
3240 PL_rs = newSVpvn(&ch, 1);
3241 }
3242 }
64ace3f8 3243 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3244 return s + numlen;
a863c7d1 3245 }
46487f74 3246 case 'C':
a05d7ebb 3247 s++;
dd374669 3248 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC		 3249 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3250 PL_utf8cache = -1;
46487f74 3251 return s;
2304df62 3252 case 'F':
5fc691f1 3253 PL_minus_a = TRUE;
3280af22 3254 PL_minus_F = TRUE;
24ffa309 3255 PL_minus_n = TRUE;
ebce5377
RGS		 3256 PL_splitstr = ++s;
3257 while (*s && !isSPACE(*s)) ++s;
e49e380e 3258 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3259 return s;
79072805 3260 case 'a':
3280af22 3261 PL_minus_a = TRUE;
24ffa309 3262 PL_minus_n = TRUE;
79072805
LW		 3263 s++;
3264 return s;
3265 case 'c':
3280af22 3266 PL_minus_c = TRUE;
79072805
LW		 3267 s++;
3268 return s;
3269 case 'd':
f20b2998 3270 forbid_setid('d', FALSE);
4633a7c4 3271 s++;
2cbb2ee1
RGS		 3272
3273 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3274 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS		 3275 ++s;
3276 my_setenv("PERL5DB_THREADED", "1");
3277 }
3278
70c94a19
RR		 3279 /* The following permits -d:Mod to accepts arguments following an =
3280 in the fashion that -MSome::Mod does. */
3281 if (*s == ':' || *s == '=') {
b19934fb
NC		 3282 const char *start;
3283 const char *end;
3284 SV *sv;
3285
3286 if (*++s == '-') {
3287 ++s;
3288 sv = newSVpvs("no Devel::");
3289 } else {
3290 sv = newSVpvs("use Devel::");
3291 }
3292
3293 start = s;
3294 end = s + strlen(s);
f85893a1 3295
b19934fb 3296 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3297 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3298 if (*s != '=')
f85893a1 3299 sv_catpvn(sv, start, end - start);
70c94a19
RR		 3300 else {
3301 sv_catpvn(sv, start, s-start);
95a2b409
RGS		 3302 /* Don't use NUL as q// delimiter here, this string goes in the
3303 * environment. */
3304 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3305 }
f85893a1 3306 s = end;
184f32ec 3307 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3308 SvREFCNT_dec(sv);
4633a7c4 3309 }
ed094faf 3310 if (!PL_perldb) {
3280af22 3311 PL_perldb = PERLDB_ALL;
a0d0e21e 3312 init_debugger();
ed094faf 3313 }
79072805
LW		 3314 return s;
3315 case 'D':
0453d815 3316 {
79072805 3317#ifdef DEBUGGING
f20b2998 3318 forbid_setid('D', FALSE);
b4ab917c 3319 s++;
dd374669 3320 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3321#else /* !DEBUGGING */
0453d815 3322 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3323 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3324 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3325 for (s++; isWORDCHAR(*s); s++) ;
79072805 3326#endif
79072805 3327 return s;
2b5060ae 3328 NOT_REACHED; /* NOTREACHED */
0453d815 3329 }
4633a7c4 3330 case 'h':
b6f82619 3331 usage();
2b5060ae
DM		 3332 NOT_REACHED; /* NOTREACHED */
3333
79072805 3334 case 'i':
43c5f42d 3335 Safefree(PL_inplace);
c030f24b
GH		 3336#if defined(__CYGWIN__) /* do backup extension automagically */
3337 if (*(s+1) == '\0') {
c86a4f2e 3338 PL_inplace = savepvs(".bak");
c030f24b
GH		 3339 return s+1;
3340 }
3341#endif /* __CYGWIN__ */
5ef5d758 3342 {
d4c19fe8 3343 const char * const start = ++s;
5ef5d758
NC		 3344 while (*s && !isSPACE(*s))
3345 ++s;
3346
3347 PL_inplace = savepvn(start, s - start);
3348 }
fb73857a 3349 return s;
4e49a025 3350 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3351 forbid_setid('I', FALSE);
fb73857a
PP		 3352 ++s;
3353 while (*s && isSPACE(*s))
3354 ++s;
3355 if (*s) {
c7030b81 3356 const char *e, *p;
0df16ed7
GS		 3357 p = s;
3358 /* ignore trailing spaces (possibly followed by other switches) */
3359 do {
3360 for (e = p; *e && !isSPACE(*e); e++) ;
3361 p = e;
3362 while (isSPACE(*p))
3363 p++;
3364 } while (*p && *p != '-');
55b4bc1c 3365 incpush(s, e-s,
e28f3139 3366 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS		 3367 s = p;
3368 if (*s == '-')
3369 s++;
79072805
LW		 3370 }
3371 else
a67e862a 3372 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3373 return s;
79072805 3374 case 'l':
3280af22 3375 PL_minus_l = TRUE;
79072805 3376 s++;
7889fe52
NIS		 3377 if (PL_ors_sv) {
3378 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3379 PL_ors_sv = NULL;
7889fe52 3380 }
79072805 3381 if (isDIGIT(*s)) {
53305cf1 3382 I32 flags = 0;
a3b680e6 3383 STRLEN numlen;
396482e1 3384 PL_ors_sv = newSVpvs("\n");
53305cf1
NC		 3385 numlen = 3 + (*s == '0');
3386 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW		 3387 s += numlen;
3388 }
3389 else {
8bfdd7d9 3390 if (RsPARA(PL_rs)) {
396482e1 3391 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS		 3392 }
3393 else {
8bfdd7d9 3394 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3395 }
79072805
LW		 3396 }
3397 return s;
1a30305b 3398 case 'M':
f20b2998 3399 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3400 /* FALLTHROUGH */
1a30305b 3401 case 'm':
f20b2998 3402 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3403 if (*++s) {
c7030b81 3404 const char *start;
b64cb68c 3405 const char *end;
11343788 3406 SV *sv;
e1ec3a88 3407 const char *use = "use ";
0544e6df 3408 bool colon = FALSE;
a5f75d66 3409 /* -M-foo == 'no foo' */
d0043bd1
NC		 3410 /* Leading space on " no " is deliberate, to make both
3411 possibilities the same length. */
3412 if (*s == '-') { use = " no "; ++s; }
3413 sv = newSVpvn(use,4);
a5f75d66 3414 start = s;
1a30305b 3415 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3416 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB		 3417 if( *s++ == ':' ) {
3418 if( *s == ':' )
3419 s++;
3420 else
3421 colon = TRUE;
3422 }
3423 }
3424 if (s == start)
3425 Perl_croak(aTHX_ "Module name required with -%c option",
3426 option);
3427 if (colon)
3428 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3429 "contains single ':'",
63da6837 3430 (int)(s - start), start, option);
b64cb68c 3431 end = s + strlen(s);
c07a80fd 3432 if (*s != '=') {
b64cb68c 3433 sv_catpvn(sv, start, end - start);
0544e6df 3434 if (option == 'm') {
c07a80fd 3435 if (*s != '\0')
cea2e8a9 3436 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3437 sv_catpvs( sv, " ()");
c07a80fd
PP		 3438 }
3439 } else {
11343788 3440 sv_catpvn(sv, start, s-start);
b64cb68c
NC		 3441 /* Use NUL as q''-delimiter. */
3442 sv_catpvs(sv, " split(/,/,q\0");
3443 ++s;
3444 sv_catpvn(sv, s, end - s);
396482e1 3445 sv_catpvs(sv, "\0)");
c07a80fd 3446 }
b64cb68c 3447 s = end;
29a861e7 3448 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP		 3449 }
3450 else
0544e6df 3451 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3452 return s;
79072805 3453 case 'n':
3280af22 3454 PL_minus_n = TRUE;
79072805
LW		 3455 s++;
3456 return s;
3457 case 'p':
3280af22 3458 PL_minus_p = TRUE;
79072805
LW		 3459 s++;
3460 return s;
3461 case 's':
f20b2998 3462 forbid_setid('s', FALSE);
3280af22 3463 PL_doswitches = TRUE;
79072805
LW		 3464 s++;
3465 return s;
6537fe72 3466 case 't':
27a6968b 3467 case 'T':
dc6d7f5c 3468#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3469 /* silently ignore */
dc6d7f5c 3470#elif defined(NO_TAINT_SUPPORT)
3231f579 3471 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM		 3472 "Cowardly refusing to run with -t or -T flags");
3473#else
3474 if (!TAINTING_get)
27a6968b