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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
7a2bbcbf 6 * 2013, 2014, 2015, 2016 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("");
76f68e9b
MHM
298 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
299 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
300 sv_setpvs(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);
6ebbc862
KW
423#ifdef USE_THREAD_SAFE_LOCALE
424 PL_C_locale_obj = newlocale(LC_ALL_MASK, "C", NULL);
425#endif
7b8dd5f4 426
8990e307 427 ENTER;
79072805
LW
428}
429
954c1994 430/*
62375a60
NIS
431=for apidoc nothreadhook
432
433Stub that provides thread hook for perl_destruct when there are
434no threads.
435
436=cut
437*/
438
439int
4e9e3734 440Perl_nothreadhook(pTHX)
62375a60 441{
96a5add6 442 PERL_UNUSED_CONTEXT;
62375a60
NIS
443 return 0;
444}
445
41e4abd8
NC
446#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
447void
448Perl_dump_sv_child(pTHX_ SV *sv)
449{
450 ssize_t got;
bf357333
NC
451 const int sock = PL_dumper_fd;
452 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
453 union control_un control;
454 struct msghdr msg;
808ad2d0 455 struct iovec vec[2];
bf357333 456 struct cmsghdr *cmptr;
808ad2d0
NC
457 int returned_errno;
458 unsigned char buffer[256];
41e4abd8 459
7918f24d
NC
460 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
461
bf357333 462 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
463 return;
464
465 PerlIO_flush(Perl_debug_log);
466
bf357333
NC
467 /* All these shenanigans are to pass a file descriptor over to our child for
468 it to dump out to. We can't let it hold open the file descriptor when it
469 forks, as the file descriptor it will dump to can turn out to be one end
470 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 471 be open, the wait would be forever.) */
bf357333
NC
472
473 msg.msg_control = control.control;
474 msg.msg_controllen = sizeof(control.control);
475 /* We're a connected socket so we don't need a destination */
476 msg.msg_name = NULL;
477 msg.msg_namelen = 0;
478 msg.msg_iov = vec;
808ad2d0 479 msg.msg_iovlen = 1;
bf357333
NC
480
481 cmptr = CMSG_FIRSTHDR(&msg);
482 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
483 cmptr->cmsg_level = SOL_SOCKET;
484 cmptr->cmsg_type = SCM_RIGHTS;
485 *((int *)CMSG_DATA(cmptr)) = 1;
486
487 vec[0].iov_base = (void*)&sv;
488 vec[0].iov_len = sizeof(sv);
489 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
490
491 if(got < 0) {
bf357333 492 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
493 abort();
494 }
bf357333
NC
495 if(got < sizeof(sv)) {
496 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
497 abort();
498 }
499
808ad2d0
NC
500 /* Return protocol is
501 int: errno value
502 unsigned char: length of location string (0 for empty)
503 unsigned char*: string (not terminated)
504 */
505 vec[0].iov_base = (void*)&returned_errno;
506 vec[0].iov_len = sizeof(returned_errno);
507 vec[1].iov_base = buffer;
508 vec[1].iov_len = 1;
509
510 got = readv(sock, vec, 2);
41e4abd8
NC
511
512 if(got < 0) {
513 perror("Debug leaking scalars parent read failed");
808ad2d0 514 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
515 abort();
516 }
808ad2d0 517 if(got < sizeof(returned_errno) + 1) {
41e4abd8 518 perror("Debug leaking scalars parent short read");
808ad2d0 519 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
520 abort();
521 }
522
808ad2d0
NC
523 if (*buffer) {
524 got = read(sock, buffer + 1, *buffer);
525 if(got < 0) {
526 perror("Debug leaking scalars parent read 2 failed");
527 PerlIO_flush(PerlIO_stderr());
528 abort();
529 }
530
531 if(got < *buffer) {
532 perror("Debug leaking scalars parent short read 2");
533 PerlIO_flush(PerlIO_stderr());
534 abort();
535 }
536 }
537
538 if (returned_errno || *buffer) {
539 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
540 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 541 returned_errno, Strerror(returned_errno));
41e4abd8
NC
542 }
543}
544#endif
545
62375a60 546/*
954c1994
GS
547=for apidoc perl_destruct
548
549Shuts down a Perl interpreter. See L<perlembed>.
550
551=cut
552*/
553
31d77e54 554int
0cb96387 555perl_destruct(pTHXx)
79072805 556{
27da23d5 557 dVAR;
be2ea8ed 558 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 559 HV *hv;
2aa47728 560#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
561 pid_t child;
562#endif
9c0b6888 563 int i;
8990e307 564
7918f24d
NC
565 PERL_ARGS_ASSERT_PERL_DESTRUCT;
566#ifndef MULTIPLICITY
ed6c66dd 567 PERL_UNUSED_ARG(my_perl);
7918f24d 568#endif
9d4ba2ae 569
3d22c4f0
GG
570 assert(PL_scopestack_ix == 1);
571
7766f137
GS
572 /* wait for all pseudo-forked children to finish */
573 PERL_WAIT_FOR_CHILDREN;
574
3280af22 575 destruct_level = PL_perl_destruct_level;
36e77d41 576#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 577 {
9d4ba2ae
AL
578 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
579 if (s) {
96e440d2
JH
580 int i;
581 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
582 i = -1;
583 } else {
22ff3130
HS
584 UV uv;
585 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
586 i = (int)uv;
587 else
588 i = 0;
96e440d2 589 }
36e77d41
DD
590#ifdef DEBUGGING
591 if (destruct_level < i) destruct_level = i;
592#endif
593#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
594 /* RT #114496, for perl_free */
595 PL_perl_destruct_level = i;
36e77d41 596#endif
5f05dabc 597 }
4633a7c4
LW
598 }
599#endif
600
27da23d5 601 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
602 dJMPENV;
603 int x = 0;
604
605 JMPENV_PUSH(x);
1b6737cc 606 PERL_UNUSED_VAR(x);
9ebf26ad 607 if (PL_endav && !PL_minus_c) {
ca7b837b 608 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 609 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 610 }
f3faeb53 611 JMPENV_POP;
26f423df 612 }
f3faeb53 613 LEAVE;
a0d0e21e 614 FREETMPS;
3d22c4f0 615 assert(PL_scopestack_ix == 0);
a0d0e21e 616
e00b64d4 617 /* Need to flush since END blocks can produce output */
8abddda3
TC
618 /* flush stdout separately, since we can identify it */
619#ifdef USE_PERLIO
620 {
621 PerlIO *stdo = PerlIO_stdout();
622 if (*stdo && PerlIO_flush(stdo)) {
623 PerlIO_restore_errno(stdo);
624 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
625 Strerror(errno));
626 if (!STATUS_UNIX)
627 STATUS_ALL_FAILURE;
628 }
629 }
630#endif
f13a2bc0 631 my_fflush_all();
e00b64d4 632
75d476e2 633#ifdef PERL_TRACE_OPS
e71f25b3
JC
634 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
635 {
636 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
637 UV uv;
638
639 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
640 || !(uv > 0))
641 goto no_trace_out;
642 }
75d476e2
SM
643 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
644 for (i = 0; i <= OP_max; ++i) {
e71f25b3
JC
645 if (PL_op_exec_cnt[i])
646 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM
647 }
648 /* Utility slot for easily doing little tracing experiments in the runloop: */
649 if (PL_op_exec_cnt[OP_max+1] != 0)
650 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
651 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 652 no_trace_out:
75d476e2
SM
653#endif
654
655
16c91539 656 if (PL_threadhook(aTHX)) {
62375a60 657 /* Threads hook has vetoed further cleanup */
c301d606 658 PL_veto_cleanup = TRUE;
37038d91 659 return STATUS_EXIT;
62375a60
NIS
660 }
661
2aa47728
NC
662#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
663 if (destruct_level != 0) {
664 /* Fork here to create a child. Our child's job is to preserve the
665 state of scalars prior to destruction, so that we can instruct it
666 to dump any scalars that we later find have leaked.
667 There's no subtlety in this code - it assumes POSIX, and it doesn't
668 fail gracefully */
669 int fd[2];
670
671 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
672 perror("Debug leaking scalars socketpair failed");
673 abort();
674 }
675
676 child = fork();
677 if(child == -1) {
678 perror("Debug leaking scalars fork failed");
679 abort();
680 }
681 if (!child) {
682 /* We are the child */
3125a5a4
NC
683 const int sock = fd[1];
684 const int debug_fd = PerlIO_fileno(Perl_debug_log);
685 int f;
808ad2d0
NC
686 const char *where;
687 /* Our success message is an integer 0, and a char 0 */
b61433a9 688 static const char success[sizeof(int) + 1] = {0};
3125a5a4 689
2aa47728 690 close(fd[0]);
2aa47728 691
3125a5a4
NC
692 /* We need to close all other file descriptors otherwise we end up
693 with interesting hangs, where the parent closes its end of a
694 pipe, and sits waiting for (another) child to terminate. Only
695 that child never terminates, because it never gets EOF, because
bf357333
NC
696 we also have the far end of the pipe open. We even need to
697 close the debugging fd, because sometimes it happens to be one
698 end of a pipe, and a process is waiting on the other end for
699 EOF. Normally it would be closed at some point earlier in
700 destruction, but if we happen to cause the pipe to remain open,
701 EOF never occurs, and we get an infinite hang. Hence all the
702 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
703
704 f = sysconf(_SC_OPEN_MAX);
705 if(f < 0) {
808ad2d0
NC
706 where = "sysconf failed";
707 goto abort;
3125a5a4
NC
708 }
709 while (f--) {
710 if (f == sock)
711 continue;
3125a5a4
NC
712 close(f);
713 }
714
2aa47728
NC
715 while (1) {
716 SV *target;
bf357333
NC
717 union control_un control;
718 struct msghdr msg;
719 struct iovec vec[1];
720 struct cmsghdr *cmptr;
721 ssize_t got;
722 int got_fd;
723
724 msg.msg_control = control.control;
725 msg.msg_controllen = sizeof(control.control);
726 /* We're a connected socket so we don't need a source */
727 msg.msg_name = NULL;
728 msg.msg_namelen = 0;
729 msg.msg_iov = vec;
c3caa5c3 730 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
731
732 vec[0].iov_base = (void*)&target;
733 vec[0].iov_len = sizeof(target);
734
735 got = recvmsg(sock, &msg, 0);
2aa47728
NC
736
737 if(got == 0)
738 break;
739 if(got < 0) {
808ad2d0
NC
740 where = "recv failed";
741 goto abort;
2aa47728
NC
742 }
743 if(got < sizeof(target)) {
808ad2d0
NC
744 where = "short recv";
745 goto abort;
2aa47728 746 }
bf357333 747
808ad2d0
NC
748 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
749 where = "no cmsg";
750 goto abort;
751 }
752 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
753 where = "wrong cmsg_len";
754 goto abort;
755 }
756 if(cmptr->cmsg_level != SOL_SOCKET) {
757 where = "wrong cmsg_level";
758 goto abort;
759 }
760 if(cmptr->cmsg_type != SCM_RIGHTS) {
761 where = "wrong cmsg_type";
762 goto abort;
763 }
bf357333
NC
764
765 got_fd = *(int*)CMSG_DATA(cmptr);
766 /* For our last little bit of trickery, put the file descriptor
767 back into Perl_debug_log, as if we never actually closed it
768 */
808ad2d0
NC
769 if(got_fd != debug_fd) {
770 if (dup2(got_fd, debug_fd) == -1) {
771 where = "dup2";
772 goto abort;
773 }
774 }
2aa47728 775 sv_dump(target);
bf357333 776
2aa47728
NC
777 PerlIO_flush(Perl_debug_log);
778
808ad2d0 779 got = write(sock, &success, sizeof(success));
2aa47728
NC
780
781 if(got < 0) {
808ad2d0
NC
782 where = "write failed";
783 goto abort;
2aa47728 784 }
808ad2d0
NC
785 if(got < sizeof(success)) {
786 where = "short write";
787 goto abort;
2aa47728
NC
788 }
789 }
790 _exit(0);
808ad2d0
NC
791 abort:
792 {
793 int send_errno = errno;
794 unsigned char length = (unsigned char) strlen(where);
795 struct iovec failure[3] = {
796 {(void*)&send_errno, sizeof(send_errno)},
797 {&length, 1},
798 {(void*)where, length}
799 };
800 int got = writev(sock, failure, 3);
801 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
802 in the parent if we try to read from the socketpair after the
803 child has exited, even if there was data to read.
804 So sleep a bit to give the parent a fighting chance of
805 reading the data. */
806 sleep(2);
807 _exit((got == -1) ? errno : 0);
808 }
bf357333 809 /* End of child. */
2aa47728 810 }
41e4abd8 811 PL_dumper_fd = fd[0];
2aa47728
NC
812 close(fd[1]);
813 }
814#endif
815
ff0cee69
PP
816 /* We must account for everything. */
817
818 /* Destroy the main CV and syntax tree */
37e77c23
FC
819 /* Set PL_curcop now, because destroying ops can cause new SVs
820 to be generated in Perl_pad_swipe, and when running with
821 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
822 op from which the filename structure member is copied. */
17fbfdf6 823 PL_curcop = &PL_compiling;
3280af22 824 if (PL_main_root) {
4e380990
DM
825 /* ensure comppad/curpad to refer to main's pad */
826 if (CvPADLIST(PL_main_cv)) {
827 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 828 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 829 }
3280af22 830 op_free(PL_main_root);
5f66b61c 831 PL_main_root = NULL;
a0d0e21e 832 }
5f66b61c 833 PL_main_start = NULL;
aac9d523
DM
834 /* note that PL_main_cv isn't usually actually freed at this point,
835 * due to the CvOUTSIDE refs from subs compiled within it. It will
836 * get freed once all the subs are freed in sv_clean_all(), for
837 * destruct_level > 0 */
3280af22 838 SvREFCNT_dec(PL_main_cv);
601f1833 839 PL_main_cv = NULL;
ca7b837b 840 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 841
13621cfb
NIS
842 /* Tell PerlIO we are about to tear things apart in case
843 we have layers which are using resources that should
844 be cleaned up now.
845 */
846
847 PerlIO_destruct(aTHX);
848
ddf23d4a
SM
849 /*
850 * Try to destruct global references. We do this first so that the
851 * destructors and destructees still exist. Some sv's might remain.
852 * Non-referenced objects are on their own.
853 */
854 sv_clean_objs();
8990e307 855
5cd24f17 856 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 857 SvREFCNT_dec(PL_warnhook);
a0714e2c 858 PL_warnhook = NULL;
3280af22 859 SvREFCNT_dec(PL_diehook);
a0714e2c 860 PL_diehook = NULL;
5cd24f17 861
4b556e6c 862 /* call exit list functions */
3280af22 863 while (PL_exitlistlen-- > 0)
acfe0abc 864 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 865
3280af22 866 Safefree(PL_exitlist);
4b556e6c 867
1c4916e5
CB
868 PL_exitlist = NULL;
869 PL_exitlistlen = 0;
870
a3e6e81e
NC
871 SvREFCNT_dec(PL_registered_mros);
872
551a8b83 873 /* jettison our possibly duplicated environment */
4b647fb0
DM
874 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
875 * so we certainly shouldn't free it here
876 */
2f42fcb0 877#ifndef PERL_MICRO
4b647fb0 878#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 879 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
880#ifdef USE_ITHREADS
881 /* only main thread can free environ[0] contents */
882 && PL_curinterp == aTHX
883#endif
884 )
885 {
551a8b83
JH
886 I32 i;
887
888 for (i = 0; environ[i]; i++)
4b420006 889 safesysfree(environ[i]);
0631ea03 890
4b420006
JH
891 /* Must use safesysfree() when working with environ. */
892 safesysfree(environ);
551a8b83
JH
893
894 environ = PL_origenviron;
895 }
896#endif
2f42fcb0 897#endif /* !PERL_MICRO */
551a8b83 898
30985c42
JH
899 if (destruct_level == 0) {
900
901 DEBUG_P(debprofdump());
902
903#if defined(PERLIO_LAYERS)
904 /* No more IO - including error messages ! */
905 PerlIO_cleanup(aTHX);
906#endif
907
908 CopFILE_free(&PL_compiling);
30985c42
JH
909
910 /* The exit() function will do everything that needs doing. */
911 return STATUS_EXIT;
912 }
913
9fa9f06b
KW
914 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
915
5f8cb046
DM
916#ifdef USE_ITHREADS
917 /* the syntax tree is shared between clones
918 * so op_free(PL_main_root) only ReREFCNT_dec's
919 * REGEXPs in the parent interpreter
920 * we need to manually ReREFCNT_dec for the clones
921 */
0547a729
DM
922 {
923 I32 i = AvFILLp(PL_regex_padav);
924 SV **ary = AvARRAY(PL_regex_padav);
925
926 for (; i; i--) {
927 SvREFCNT_dec(ary[i]);
928 ary[i] = &PL_sv_undef;
929 }
930 }
5f8cb046
DM
931#endif
932
0547a729 933
ad64d0ec 934 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
935 PL_stashcache = NULL;
936
5f05dabc
PP
937 /* loosen bonds of global variables */
938
2f9285f8
DM
939 /* XXX can PL_parser still be non-null here? */
940 if(PL_parser && PL_parser->rsfp) {
941 (void)PerlIO_close(PL_parser->rsfp);
942 PL_parser->rsfp = NULL;
8ebc5c01
PP
943 }
944
84386e14
RGS
945 if (PL_minus_F) {
946 Safefree(PL_splitstr);
947 PL_splitstr = NULL;
948 }
949
8ebc5c01 950 /* switches */
3280af22
NIS
951 PL_minus_n = FALSE;
952 PL_minus_p = FALSE;
953 PL_minus_l = FALSE;
954 PL_minus_a = FALSE;
955 PL_minus_F = FALSE;
956 PL_doswitches = FALSE;
599cee73 957 PL_dowarn = G_WARN_OFF;
1a904fc8 958#ifdef PERL_SAWAMPERSAND
d3b97530 959 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 960#endif
3280af22
NIS
961 PL_unsafe = FALSE;
962
963 Safefree(PL_inplace);
bd61b366 964 PL_inplace = NULL;
a7cb1f99 965 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
966
967 if (PL_e_script) {
968 SvREFCNT_dec(PL_e_script);
a0714e2c 969 PL_e_script = NULL;
8ebc5c01
PP
970 }
971
bf9cdc68
RG
972 PL_perldb = 0;
973
8ebc5c01
PP
974 /* magical thingies */
975
e23d9e2f
CS
976 SvREFCNT_dec(PL_ofsgv); /* *, */
977 PL_ofsgv = NULL;
5f05dabc 978
7889fe52 979 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 980 PL_ors_sv = NULL;
8ebc5c01 981
3280af22 982 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 983 PL_rs = NULL;
dc92893f 984
d33b2eba 985 Safefree(PL_osname); /* $^O */
bd61b366 986 PL_osname = NULL;
5f05dabc 987
3280af22 988 SvREFCNT_dec(PL_statname);
a0714e2c
SS
989 PL_statname = NULL;
990 PL_statgv = NULL;
5f05dabc 991
8ebc5c01
PP
992 /* defgv, aka *_ should be taken care of elsewhere */
993
7d5ea4e7
GS
994 /* float buffer */
995 Safefree(PL_efloatbuf);
bd61b366 996 PL_efloatbuf = NULL;
7d5ea4e7
GS
997 PL_efloatsize = 0;
998
8ebc5c01 999 /* startup and shutdown function lists */
3280af22 1000 SvREFCNT_dec(PL_beginav);
5a837c8f 1001 SvREFCNT_dec(PL_beginav_save);
3280af22 1002 SvREFCNT_dec(PL_endav);
7d30b5c4 1003 SvREFCNT_dec(PL_checkav);
ece599bd 1004 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
1005 SvREFCNT_dec(PL_unitcheckav);
1006 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1007 SvREFCNT_dec(PL_initav);
7d49f689
NC
1008 PL_beginav = NULL;
1009 PL_beginav_save = NULL;
1010 PL_endav = NULL;
1011 PL_checkav = NULL;
1012 PL_checkav_save = NULL;
3c10abe3
AG
1013 PL_unitcheckav = NULL;
1014 PL_unitcheckav_save = NULL;
7d49f689 1015 PL_initav = NULL;
5618dfe8 1016
8ebc5c01 1017 /* shortcuts just get cleared */
a0714e2c
SS
1018 PL_hintgv = NULL;
1019 PL_errgv = NULL;
a0714e2c
SS
1020 PL_argvoutgv = NULL;
1021 PL_stdingv = NULL;
1022 PL_stderrgv = NULL;
1023 PL_last_in_gv = NULL;
a0714e2c
SS
1024 PL_DBsingle = NULL;
1025 PL_DBtrace = NULL;
1026 PL_DBsignal = NULL;
a6d69523
TC
1027 PL_DBsingle_iv = 0;
1028 PL_DBtrace_iv = 0;
1029 PL_DBsignal_iv = 0;
601f1833 1030 PL_DBcv = NULL;
7d49f689 1031 PL_dbargs = NULL;
5c284bb0 1032 PL_debstash = NULL;
8ebc5c01 1033
cf93a474 1034 SvREFCNT_dec(PL_envgv);
f03015cd 1035 SvREFCNT_dec(PL_incgv);
722fa0e9 1036 SvREFCNT_dec(PL_argvgv);
475b1e90 1037 SvREFCNT_dec(PL_replgv);
8cece913
FC
1038 SvREFCNT_dec(PL_DBgv);
1039 SvREFCNT_dec(PL_DBline);
1040 SvREFCNT_dec(PL_DBsub);
cf93a474 1041 PL_envgv = NULL;
f03015cd 1042 PL_incgv = NULL;
722fa0e9 1043 PL_argvgv = NULL;
475b1e90 1044 PL_replgv = NULL;
8cece913
FC
1045 PL_DBgv = NULL;
1046 PL_DBline = NULL;
1047 PL_DBsub = NULL;
1048
7a1c5554 1049 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1050 PL_argvout_stack = NULL;
8ebc5c01 1051
5c831c24 1052 SvREFCNT_dec(PL_modglobal);
5c284bb0 1053 PL_modglobal = NULL;
5c831c24 1054 SvREFCNT_dec(PL_preambleav);
7d49f689 1055 PL_preambleav = NULL;
5c831c24 1056 SvREFCNT_dec(PL_subname);
a0714e2c 1057 PL_subname = NULL;
ca0c25f6 1058#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1059 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1060 PL_pidstatus = NULL;
ca0c25f6 1061#endif
5c831c24 1062 SvREFCNT_dec(PL_toptarget);
a0714e2c 1063 PL_toptarget = NULL;
5c831c24 1064 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1065 PL_bodytarget = NULL;
1066 PL_formtarget = NULL;
5c831c24 1067
d33b2eba 1068 /* free locale stuff */
b9582b6a 1069#ifdef USE_LOCALE_COLLATE
d33b2eba 1070 Safefree(PL_collation_name);
bd61b366 1071 PL_collation_name = NULL;
b9582b6a 1072#endif
d33b2eba 1073
b9582b6a 1074#ifdef USE_LOCALE_NUMERIC
d33b2eba 1075 Safefree(PL_numeric_name);
bd61b366 1076 PL_numeric_name = NULL;
a453c169 1077 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1078 PL_numeric_radix_sv = NULL;
b9582b6a 1079#endif
d33b2eba 1080
9c0b6888
KW
1081 /* clear character classes */
1082 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1083 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1084 PL_utf8_swash_ptrs[i] = NULL;
1085 }
5c831c24
GS
1086 SvREFCNT_dec(PL_utf8_mark);
1087 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1088 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1089 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1090 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1091 SvREFCNT_dec(PL_utf8_idstart);
1092 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1093 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1094 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1095 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1096 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1097 SvREFCNT_dec(PL_UpperLatin1);
1098 SvREFCNT_dec(PL_Latin1);
1099 SvREFCNT_dec(PL_NonL1NonFinalFold);
1100 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1101#ifdef USE_LOCALE_CTYPE
780fcc9f 1102 SvREFCNT_dec(PL_warn_locale);
5b7de470 1103#endif
a0714e2c
SS
1104 PL_utf8_mark = NULL;
1105 PL_utf8_toupper = NULL;
1106 PL_utf8_totitle = NULL;
1107 PL_utf8_tolower = NULL;
1108 PL_utf8_tofold = NULL;
1109 PL_utf8_idstart = NULL;
1110 PL_utf8_idcont = NULL;
2726813d 1111 PL_utf8_foldclosures = NULL;
9fa9f06b 1112 PL_AboveLatin1 = NULL;
e0a1ff7a 1113 PL_InBitmap = NULL;
9fa9f06b 1114 PL_HasMultiCharFold = NULL;
5b7de470 1115#ifdef USE_LOCALE_CTYPE
780fcc9f 1116 PL_warn_locale = NULL;
5b7de470 1117#endif
9fa9f06b
KW
1118 PL_Latin1 = NULL;
1119 PL_NonL1NonFinalFold = NULL;
1120 PL_UpperLatin1 = NULL;
86f72d56 1121 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1122 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1123 PL_XPosix_ptrs[i] = NULL;
86f72d56 1124 }
64935bc6 1125 PL_GCB_invlist = NULL;
6b659339 1126 PL_LB_invlist = NULL;
06ae2722 1127 PL_SB_invlist = NULL;
ae3bb8ea 1128 PL_WB_invlist = NULL;
5c831c24 1129
6ebbc862
KW
1130#ifdef USE_THREAD_SAFE_LOCALE
1131 if (PL_C_locale_obj) {
1132 /* Make sure we aren't using the locale space we are about to free */
1133 uselocale(LC_GLOBAL_LOCALE);
1134
1135 freelocale(PL_C_locale_obj);
1136 PL_C_locale_obj = (locale_t) NULL;
1137 }
1138#endif
1139
971a9dd3 1140 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1141 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1142 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1143 cophh_free(CopHINTHASH_get(&PL_compiling));
1144 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1145 CopFILE_free(&PL_compiling);
5c831c24 1146
a0d0e21e 1147 /* Prepare to destruct main symbol table. */
5f05dabc 1148
3280af22 1149 hv = PL_defstash;
ca556bcd
DM
1150 /* break ref loop *:: <=> %:: */
1151 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1152 PL_defstash = 0;
a0d0e21e 1153 SvREFCNT_dec(hv);
5c831c24 1154 SvREFCNT_dec(PL_curstname);
a0714e2c 1155 PL_curstname = NULL;
a0d0e21e 1156
5a844595
GS
1157 /* clear queued errors */
1158 SvREFCNT_dec(PL_errors);
a0714e2c 1159 PL_errors = NULL;
5a844595 1160
dd69841b
BB
1161 SvREFCNT_dec(PL_isarev);
1162
a0d0e21e 1163 FREETMPS;
9b387841 1164 if (destruct_level >= 2) {
3280af22 1165 if (PL_scopestack_ix != 0)
9b387841
NC
1166 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1167 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1168 (long)PL_scopestack_ix);
3280af22 1169 if (PL_savestack_ix != 0)
9b387841
NC
1170 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1171 "Unbalanced saves: %ld more saves than restores\n",
1172 (long)PL_savestack_ix);
3280af22 1173 if (PL_tmps_floor != -1)
9b387841
NC
1174 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1175 (long)PL_tmps_floor + 1);
a0d0e21e 1176 if (cxstack_ix != -1)
9b387841
NC
1177 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1178 (long)cxstack_ix + 1);
a0d0e21e 1179 }
8990e307 1180
0547a729
DM
1181#ifdef USE_ITHREADS
1182 SvREFCNT_dec(PL_regex_padav);
1183 PL_regex_padav = NULL;
1184 PL_regex_pad = NULL;
1185#endif
1186
776df701 1187#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1188 /* the entries in this list are allocated via SV PVX's, so get freed
1189 * in sv_clean_all */
1190 Safefree(PL_my_cxt_list);
776df701 1191#endif
57bb2458 1192
8990e307 1193 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1194
1195 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1196 while (sv_clean_all() > 2)
5226ed68
JH
1197 ;
1198
23083432
FC
1199#ifdef USE_ITHREADS
1200 Safefree(PL_stashpad); /* must come after sv_clean_all */
1201#endif
1202
d4777f27
GS
1203 AvREAL_off(PL_fdpid); /* no surviving entries */
1204 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1205 PL_fdpid = NULL;
d33b2eba 1206
6c644e78
GS
1207#ifdef HAVE_INTERP_INTERN
1208 sys_intern_clear();
1209#endif
1210
a38ab475
RZ
1211 /* constant strings */
1212 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1213 SvREFCNT_dec(PL_sv_consts[i]);
1214 PL_sv_consts[i] = NULL;
1215 }
1216
6e72f9df
PP
1217 /* Destruct the global string table. */
1218 {
1219 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1220 * so that sv_free() won't fail on them.
80459961
NC
1221 * Now that the global string table is using a single hunk of memory
1222 * for both HE and HEK, we either need to explicitly unshare it the
1223 * correct way, or actually free things here.
6e72f9df 1224 */
80459961
NC
1225 I32 riter = 0;
1226 const I32 max = HvMAX(PL_strtab);
c4420975 1227 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1228 HE *hent = array[0];
1229
6e72f9df 1230 for (;;) {
0453d815 1231 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1232 HE * const next = HeNEXT(hent);
9014280d 1233 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1234 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1235 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1236 Safefree(hent);
1237 hent = next;
6e72f9df
PP
1238 }
1239 if (!hent) {
1240 if (++riter > max)
1241 break;
1242 hent = array[riter];
1243 }
1244 }
80459961
NC
1245
1246 Safefree(array);
1247 HvARRAY(PL_strtab) = 0;
1248 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1249 }
3280af22 1250 SvREFCNT_dec(PL_strtab);
6e72f9df 1251
e652bb2f 1252#ifdef USE_ITHREADS
c21d1a0f 1253 /* free the pointer tables used for cloning */
a0739874 1254 ptr_table_free(PL_ptr_table);
bf9cdc68 1255 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1256#endif
a0739874 1257
d33b2eba
GS
1258 /* free special SVs */
1259
1260 SvREFCNT(&PL_sv_yes) = 0;
1261 sv_clear(&PL_sv_yes);
1262 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1263 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1264
1265 SvREFCNT(&PL_sv_no) = 0;
1266 sv_clear(&PL_sv_no);
1267 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1268 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1269
9f375a43
DM
1270 {
1271 int i;
1272 for (i=0; i<=2; i++) {
1273 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1274 sv_clear(PERL_DEBUG_PAD(i));
1275 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1276 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1277 }
1278 }
1279
0453d815 1280 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1281 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1282
eba0f806
DM
1283#ifdef DEBUG_LEAKING_SCALARS
1284 if (PL_sv_count != 0) {
1285 SV* sva;
1286 SV* sv;
eb578fdb 1287 SV* svend;
eba0f806 1288
ad64d0ec 1289 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1290 svend = &sva[SvREFCNT(sva)];
1291 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1292 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1293 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1294 " flags=0x%"UVxf
fd0854ff 1295 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1296 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1297 "serial %"UVuf"\n",
574b8821
NC
1298 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1299 pTHX__VALUE,
fd0854ff
DM
1300 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1301 sv->sv_debug_line,
1302 sv->sv_debug_inpad ? "for" : "by",
1303 sv->sv_debug_optype ?
1304 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1305 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1306 sv->sv_debug_serial
fd0854ff 1307 );
2aa47728 1308#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1309 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1310#endif
eba0f806
DM
1311 }
1312 }
1313 }
1314 }
2aa47728
NC
1315#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1316 {
1317 int status;
1318 fd_set rset;
1319 /* Wait for up to 4 seconds for child to terminate.
1320 This seems to be the least effort way of timing out on reaping
1321 its exit status. */
1322 struct timeval waitfor = {4, 0};
41e4abd8 1323 int sock = PL_dumper_fd;
2aa47728
NC
1324
1325 shutdown(sock, 1);
1326 FD_ZERO(&rset);
1327 FD_SET(sock, &rset);
1328 select(sock + 1, &rset, NULL, NULL, &waitfor);
1329 waitpid(child, &status, WNOHANG);
1330 close(sock);
1331 }
1332#endif
eba0f806 1333#endif
77abb4c6
NC
1334#ifdef DEBUG_LEAKING_SCALARS_ABORT
1335 if (PL_sv_count)
1336 abort();
1337#endif
bf9cdc68 1338 PL_sv_count = 0;
eba0f806 1339
56a2bab7 1340#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1341 /* No more IO - including error messages ! */
1342 PerlIO_cleanup(aTHX);
1343#endif
1344
9f4bd222 1345 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1346 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1347 for no arg - and will try and SvREFCNT_dec it.
1348 */
1349 SvREFCNT(&PL_sv_undef) = 0;
1350 SvREADONLY_off(&PL_sv_undef);
1351
3280af22 1352 Safefree(PL_origfilename);
bd61b366 1353 PL_origfilename = NULL;
43c5f42d 1354 Safefree(PL_reg_curpm);
dd28f7bb 1355 free_tied_hv_pool();
3280af22 1356 Safefree(PL_op_mask);
cf36064f 1357 Safefree(PL_psig_name);
bf9cdc68 1358 PL_psig_name = (SV**)NULL;
d525a7b2 1359 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1360 {
1361 /* We need to NULL PL_psig_pend first, so that
1362 signal handlers know not to use it */
1363 int *psig_save = PL_psig_pend;
1364 PL_psig_pend = (int*)NULL;
1365 Safefree(psig_save);
1366 }
6e72f9df 1367 nuke_stacks();
284167a5
SM
1368 TAINTING_set(FALSE);
1369 TAINT_WARN_set(FALSE);
3280af22 1370 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1371
a0d0e21e 1372 DEBUG_P(debprofdump());
d33b2eba 1373
b173165c
FC
1374 PL_debug = 0;
1375
e5dd39fc 1376#ifdef USE_REENTRANT_API
10bc17b6 1377 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1378#endif
1379
a24da70b
NC
1380 /* These all point to HVs that are about to be blown away.
1381 Code in core and on CPAN assumes that if the interpreter is re-started
1382 that they will be cleanly NULL or pointing to a valid HV. */
1383 PL_custom_op_names = NULL;
1384 PL_custom_op_descs = NULL;
1385 PL_custom_ops = NULL;
1386
612f20c3
GS
1387 sv_free_arenas();
1388
5d9a96ca
DM
1389 while (PL_regmatch_slab) {
1390 regmatch_slab *s = PL_regmatch_slab;
1391 PL_regmatch_slab = PL_regmatch_slab->next;
1392 Safefree(s);
1393 }
1394
fc36a67e
PP
1395 /* As the absolutely last thing, free the non-arena SV for mess() */
1396
3280af22 1397 if (PL_mess_sv) {
f350b448
NC
1398 /* we know that type == SVt_PVMG */
1399
9c63abab 1400 /* it could have accumulated taint magic */
f350b448
NC
1401 MAGIC* mg;
1402 MAGIC* moremagic;
1403 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1404 moremagic = mg->mg_moremagic;
1405 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1406 && mg->mg_len >= 0)
1407 Safefree(mg->mg_ptr);
1408 Safefree(mg);
9c63abab 1409 }
f350b448 1410
fc36a67e 1411 /* we know that type >= SVt_PV */
8bd4d4c5 1412 SvPV_free(PL_mess_sv);
3280af22
NIS
1413 Safefree(SvANY(PL_mess_sv));
1414 Safefree(PL_mess_sv);
a0714e2c 1415 PL_mess_sv = NULL;
fc36a67e 1416 }
37038d91 1417 return STATUS_EXIT;
79072805
LW
1418}
1419
954c1994
GS
1420/*
1421=for apidoc perl_free
1422
1423Releases a Perl interpreter. See L<perlembed>.
1424
1425=cut
1426*/
1427
79072805 1428void
0cb96387 1429perl_free(pTHXx)
79072805 1430{
5174512c
NC
1431 dVAR;
1432
7918f24d
NC
1433 PERL_ARGS_ASSERT_PERL_FREE;
1434
c301d606
DM
1435 if (PL_veto_cleanup)
1436 return;
1437
7cb608b5 1438#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1439 {
1440 /*
1441 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1442 * value as we're probably hunting memory leaks then
1443 */
36e77d41 1444 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1445 const U32 old_debug = PL_debug;
55ef9aae
MHM
1446 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1447 thread at thread exit. */
4fd0a9b8
NC
1448 if (DEBUG_m_TEST) {
1449 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1450 "free this thread's memory\n");
1451 PL_debug &= ~ DEBUG_m_FLAG;
1452 }
6edcbed6
DD
1453 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1454 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1455 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1456 safesysfree(ptr);
1457 }
4fd0a9b8 1458 PL_debug = old_debug;
55ef9aae
MHM
1459 }
1460 }
7cb608b5
NC
1461#endif
1462
acfe0abc 1463#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1464# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1465 {
acfe0abc 1466# ifdef NETWARE
7af12a34 1467 void *host = nw_internal_host;
7af12a34 1468 PerlMem_free(aTHXx);
7af12a34 1469 nw_delete_internal_host(host);
acfe0abc 1470# else
bdb50480
NC
1471 void *host = w32_internal_host;
1472 PerlMem_free(aTHXx);
7af12a34 1473 win32_delete_internal_host(host);
acfe0abc 1474# endif
7af12a34 1475 }
1c0ca838
GS
1476# else
1477 PerlMem_free(aTHXx);
1478# endif
acfe0abc
GS
1479#else
1480 PerlMem_free(aTHXx);
76e3520e 1481#endif
79072805
LW
1482}
1483
b7f7fff6 1484#if defined(USE_ITHREADS)
aebd1ac7
GA
1485/* provide destructors to clean up the thread key when libperl is unloaded */
1486#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1487
826955bd 1488#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1489#pragma fini "perl_fini"
666ad1ec
GA
1490#elif defined(__sun) && !defined(__GNUC__)
1491#pragma fini (perl_fini)
aebd1ac7
GA
1492#endif
1493
0dbb1585
AL
1494static void
1495#if defined(__GNUC__)
1496__attribute__((destructor))
aebd1ac7 1497#endif
de009b76 1498perl_fini(void)
aebd1ac7 1499{
27da23d5 1500 dVAR;
5c64bffd
NC
1501 if (
1502#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1503 my_vars &&
1504#endif
1505 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1506 FREE_THREAD_KEY;
1507}
1508
1509#endif /* WIN32 */
1510#endif /* THREADS */
1511
4b556e6c 1512void
864dbfa3 1513Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1514{
3280af22
NIS
1515 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1516 PL_exitlist[PL_exitlistlen].fn = fn;
1517 PL_exitlist[PL_exitlistlen].ptr = ptr;
1518 ++PL_exitlistlen;
4b556e6c
JD
1519}
1520
954c1994
GS
1521/*
1522=for apidoc perl_parse
1523
1524Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1525
1526=cut
1527*/
1528
03d9f026
FC
1529#define SET_CURSTASH(newstash) \
1530 if (PL_curstash != newstash) { \
1531 SvREFCNT_dec(PL_curstash); \
1532 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1533 }
1534
79072805 1535int
0cb96387 1536perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1537{
27da23d5 1538 dVAR;
6224f72b 1539 I32 oldscope;
6224f72b 1540 int ret;
db36c5a1 1541 dJMPENV;
8d063cd8 1542
7918f24d
NC
1543 PERL_ARGS_ASSERT_PERL_PARSE;
1544#ifndef MULTIPLICITY
ed6c66dd 1545 PERL_UNUSED_ARG(my_perl);
7918f24d 1546#endif
7dc86639 1547#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1548 {
7dc86639
YO
1549 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1550
22ff3130 1551 if (s && strEQ(s, "1")) {
25c1b134
TC
1552 const unsigned char *seed= PERL_HASH_SEED;
1553 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1554 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1555 while (seed < seed_end) {
1556 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1557 }
6a5b4183
YO
1558#ifdef PERL_HASH_RANDOMIZE_KEYS
1559 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1560 PL_HASH_RAND_BITS_ENABLED,
1561 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1562#endif
7dc86639
YO
1563 PerlIO_printf(Perl_debug_log, "\n");
1564 }
b0891165
JH
1565 }
1566#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
43238333 1567
ea34f6bd 1568#ifdef __amigaos4__
43238333
AB
1569 {
1570 struct NameTranslationInfo nti;
1571 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1572 }
1573#endif
1574
3280af22 1575 PL_origargc = argc;
e2975953 1576 PL_origargv = argv;
a0d0e21e 1577
a2722ac9
GA
1578 if (PL_origalen != 0) {
1579 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1580 }
1581 else {
3cb9023d
JH
1582 /* Set PL_origalen be the sum of the contiguous argv[]
1583 * elements plus the size of the env in case that it is
e9137a8e 1584 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1585 * as the maximum modifiable length of $0. In the worst case
1586 * the area we are able to modify is limited to the size of
43c32782 1587 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1588 * --jhi */
e1ec3a88 1589 const char *s = NULL;
54bfe034 1590 int i;
b7249aaf 1591 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1592 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1593 const UV aligned =
43c32782
JH
1594 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1595
1596 /* See if all the arguments are contiguous in memory. Note
1597 * that 'contiguous' is a loose term because some platforms
1598 * align the argv[] and the envp[]. If the arguments look
1599 * like non-aligned, assume that they are 'strictly' or
1600 * 'traditionally' contiguous. If the arguments look like
1601 * aligned, we just check that they are within aligned
1602 * PTRSIZE bytes. As long as no system has something bizarre
1603 * like the argv[] interleaved with some other data, we are
1604 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1605 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1606 while (*s) s++;
1607 for (i = 1; i < PL_origargc; i++) {
1608 if ((PL_origargv[i] == s + 1
43c32782 1609#ifdef OS2
c8941eeb 1610 || PL_origargv[i] == s + 2
43c32782 1611#endif
c8941eeb
JH
1612 )
1613 ||
1614 (aligned &&
1615 (PL_origargv[i] > s &&
1616 PL_origargv[i] <=
1617 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1618 )
1619 {
1620 s = PL_origargv[i];
1621 while (*s) s++;
1622 }
1623 else
1624 break;
54bfe034 1625 }
54bfe034 1626 }
a4a109c2
JD
1627
1628#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1629 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1630 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1631 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1632 ||
1633 (aligned &&
1634 (PL_origenviron[0] > s &&
1635 PL_origenviron[0] <=
1636 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1637 )
1638 {
9d419b5f 1639#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1640 s = PL_origenviron[0];
1641 while (*s) s++;
1642#endif
bd61b366 1643 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1644 /* Force copy of environment. */
1645 for (i = 1; PL_origenviron[i]; i++) {
1646 if (PL_origenviron[i] == s + 1
1647 ||
1648 (aligned &&
1649 (PL_origenviron[i] > s &&
1650 PL_origenviron[i] <=
1651 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1652 )
1653 {
1654 s = PL_origenviron[i];
1655 while (*s) s++;
1656 }
1657 else
1658 break;
54bfe034 1659 }
43c32782 1660 }
54bfe034 1661 }
a4a109c2
JD
1662#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1663
2d2af554 1664 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1665 }
1666
3280af22 1667 if (PL_do_undump) {
a0d0e21e
LW
1668
1669 /* Come here if running an undumped a.out. */
1670
3280af22
NIS
1671 PL_origfilename = savepv(argv[0]);
1672 PL_do_undump = FALSE;
a0d0e21e 1673 cxstack_ix = -1; /* start label stack again */
748a9306 1674 init_ids();
284167a5 1675 assert (!TAINT_get);
b7975bdd 1676 TAINT;
e2051532 1677 set_caret_X();
b7975bdd 1678 TAINT_NOT;
a0d0e21e
LW
1679 init_postdump_symbols(argc,argv,env);
1680 return 0;
1681 }
1682
3280af22 1683 if (PL_main_root) {
3280af22 1684 op_free(PL_main_root);
5f66b61c 1685 PL_main_root = NULL;
ff0cee69 1686 }
5f66b61c 1687 PL_main_start = NULL;
3280af22 1688 SvREFCNT_dec(PL_main_cv);
601f1833 1689 PL_main_cv = NULL;
79072805 1690
3280af22
NIS
1691 time(&PL_basetime);
1692 oldscope = PL_scopestack_ix;
599cee73 1693 PL_dowarn = G_WARN_OFF;
f86702cc 1694
14dd3ad8 1695 JMPENV_PUSH(ret);
6224f72b 1696 switch (ret) {
312caa8e 1697 case 0:
14dd3ad8 1698 parse_body(env,xsinit);
9ebf26ad 1699 if (PL_unitcheckav) {
3c10abe3 1700 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1701 }
1702 if (PL_checkav) {
ca7b837b 1703 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1704 call_list(oldscope, PL_checkav);
9ebf26ad 1705 }
14dd3ad8
GS
1706 ret = 0;
1707 break;
6224f72b
GS
1708 case 1:
1709 STATUS_ALL_FAILURE;
924ba076 1710 /* FALLTHROUGH */
6224f72b
GS
1711 case 2:
1712 /* my_exit() was called */
3280af22 1713 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1714 LEAVE;
1715 FREETMPS;
03d9f026 1716 SET_CURSTASH(PL_defstash);
9ebf26ad 1717 if (PL_unitcheckav) {
3c10abe3 1718 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1719 }
1720 if (PL_checkav) {
ca7b837b 1721 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1722 call_list(oldscope, PL_checkav);
9ebf26ad 1723 }
37038d91 1724 ret = STATUS_EXIT;
14dd3ad8 1725 break;
6224f72b 1726 case 3:
bf49b057 1727 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1728 ret = 1;
1729 break;
6224f72b 1730 }
14dd3ad8
GS
1731 JMPENV_POP;
1732 return ret;
1733}
1734
4a5df386
NC
1735/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1736 miniperl, and we need to see those flags reflected in the values here. */
1737
1738/* What this returns is subject to change. Use the public interface in Config.
1739 */
1740static void
1741S_Internals_V(pTHX_ CV *cv)
1742{
1743 dXSARGS;
1744#ifdef LOCAL_PATCH_COUNT
1745 const int local_patch_count = LOCAL_PATCH_COUNT;
1746#else
1747 const int local_patch_count = 0;
1748#endif
2dc296d2 1749 const int entries = 3 + local_patch_count;
4a5df386 1750 int i;
fe1c5936 1751 static const char non_bincompat_options[] =
4a5df386
NC
1752# ifdef DEBUGGING
1753 " DEBUGGING"
1754# endif
1755# ifdef NO_MATHOMS
0d311fbe 1756 " NO_MATHOMS"
4a5df386 1757# endif
59b86f4b
DM
1758# ifdef NO_HASH_SEED
1759 " NO_HASH_SEED"
1760# endif
3b0e4ee2
MB
1761# ifdef NO_TAINT_SUPPORT
1762 " NO_TAINT_SUPPORT"
1763# endif
cb26ef7a
MB
1764# ifdef PERL_BOOL_AS_CHAR
1765 " PERL_BOOL_AS_CHAR"
1766# endif
93c10d60
FC
1767# ifdef PERL_COPY_ON_WRITE
1768 " PERL_COPY_ON_WRITE"
1769# endif
4a5df386
NC
1770# ifdef PERL_DISABLE_PMC
1771 " PERL_DISABLE_PMC"
1772# endif
1773# ifdef PERL_DONT_CREATE_GVSV
1774 " PERL_DONT_CREATE_GVSV"
1775# endif
9a044a43
NC
1776# ifdef PERL_EXTERNAL_GLOB
1777 " PERL_EXTERNAL_GLOB"
1778# endif
59b86f4b
DM
1779# ifdef PERL_HASH_FUNC_SIPHASH
1780 " PERL_HASH_FUNC_SIPHASH"
1781# endif
1782# ifdef PERL_HASH_FUNC_SDBM
1783 " PERL_HASH_FUNC_SDBM"
1784# endif
1785# ifdef PERL_HASH_FUNC_DJB2
1786 " PERL_HASH_FUNC_DJB2"
1787# endif
1788# ifdef PERL_HASH_FUNC_SUPERFAST
1789 " PERL_HASH_FUNC_SUPERFAST"
1790# endif
1791# ifdef PERL_HASH_FUNC_MURMUR3
1792 " PERL_HASH_FUNC_MURMUR3"
1793# endif
1794# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1795 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1796# endif
1797# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1798 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1799# endif
1800# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1801 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1802# endif
4a5df386
NC
1803# ifdef PERL_IS_MINIPERL
1804 " PERL_IS_MINIPERL"
1805# endif
1806# ifdef PERL_MALLOC_WRAP
1807 " PERL_MALLOC_WRAP"
1808# endif
1809# ifdef PERL_MEM_LOG
1810 " PERL_MEM_LOG"
1811# endif
1812# ifdef PERL_MEM_LOG_NOIMPL
1813 " PERL_MEM_LOG_NOIMPL"
1814# endif
4e499636
DM
1815# ifdef PERL_OP_PARENT
1816 " PERL_OP_PARENT"
1817# endif
59b86f4b
DM
1818# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1819 " PERL_PERTURB_KEYS_DETERMINISTIC"
1820# endif
1821# ifdef PERL_PERTURB_KEYS_DISABLED
1822 " PERL_PERTURB_KEYS_DISABLED"
1823# endif
1824# ifdef PERL_PERTURB_KEYS_RANDOM
1825 " PERL_PERTURB_KEYS_RANDOM"
1826# endif
c3cf41ec
NC
1827# ifdef PERL_PRESERVE_IVUV
1828 " PERL_PRESERVE_IVUV"
1829# endif
c051e30b
NC
1830# ifdef PERL_RELOCATABLE_INCPUSH
1831 " PERL_RELOCATABLE_INCPUSH"
1832# endif
4a5df386
NC
1833# ifdef PERL_USE_DEVEL
1834 " PERL_USE_DEVEL"
1835# endif
1836# ifdef PERL_USE_SAFE_PUTENV
1837 " PERL_USE_SAFE_PUTENV"
1838# endif
102b7877
YO
1839# ifdef SILENT_NO_TAINT_SUPPORT
1840 " SILENT_NO_TAINT_SUPPORT"
1841# endif
a3749cf3
NC
1842# ifdef UNLINK_ALL_VERSIONS
1843 " UNLINK_ALL_VERSIONS"
1844# endif
de618ee4
NC
1845# ifdef USE_ATTRIBUTES_FOR_PERLIO
1846 " USE_ATTRIBUTES_FOR_PERLIO"
1847# endif
4a5df386
NC
1848# ifdef USE_FAST_STDIO
1849 " USE_FAST_STDIO"
1850# endif
59b86f4b
DM
1851# ifdef USE_HASH_SEED_EXPLICIT
1852 " USE_HASH_SEED_EXPLICIT"
1853# endif
98548bdf
NC
1854# ifdef USE_LOCALE
1855 " USE_LOCALE"
1856# endif
98548bdf
NC
1857# ifdef USE_LOCALE_CTYPE
1858 " USE_LOCALE_CTYPE"
1859# endif
6937817d
DD
1860# ifdef WIN32_NO_REGISTRY
1861 " USE_NO_REGISTRY"
1862# endif
5a8d8935
NC
1863# ifdef USE_PERL_ATOF
1864 " USE_PERL_ATOF"
1865# endif
0d311fbe
NC
1866# ifdef USE_SITECUSTOMIZE
1867 " USE_SITECUSTOMIZE"
1868# endif
4a5df386
NC
1869 ;
1870 PERL_UNUSED_ARG(cv);
d3db1514 1871 PERL_UNUSED_VAR(items);
4a5df386
NC
1872
1873 EXTEND(SP, entries);
1874
1875 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1876 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1877 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1878
6baa8dbd
NT
1879#ifndef PERL_BUILD_DATE
1880# ifdef __DATE__
1881# ifdef __TIME__
1882# define PERL_BUILD_DATE __DATE__ " " __TIME__
1883# else
1884# define PERL_BUILD_DATE __DATE__
1885# endif
1886# endif
1887#endif
1888
1889#ifdef PERL_BUILD_DATE
4a5df386 1890 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1891 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1892 SVs_TEMP));
4a5df386
NC
1893#else
1894 PUSHs(&PL_sv_undef);
1895#endif
1896
4a5df386
NC
1897 for (i = 1; i <= local_patch_count; i++) {
1898 /* This will be an undef, if PL_localpatches[i] is NULL. */
1899 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1900 }
1901
1902 XSRETURN(entries);
1903}
1904
be71fc8f
NC
1905#define INCPUSH_UNSHIFT 0x01
1906#define INCPUSH_ADD_OLD_VERS 0x02
1907#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1908#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1909#define INCPUSH_NOT_BASEDIR 0x10
1910#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1911#define INCPUSH_ADD_SUB_DIRS \
1912 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1913
312caa8e 1914STATIC void *
14dd3ad8 1915S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1916{
27da23d5 1917 dVAR;
2f9285f8 1918 PerlIO *rsfp;
312caa8e 1919 int argc = PL_origargc;
8f42b153 1920 char **argv = PL_origargv;
e1ec3a88 1921 const char *scriptname = NULL;
402582ca 1922 bool dosearch = FALSE;
eb578fdb 1923 char c;
737c24fc 1924 bool doextract = FALSE;
bd61b366 1925 const char *cddir = NULL;
ab019eaa 1926#ifdef USE_SITECUSTOMIZE
20ef40cf 1927 bool minus_f = FALSE;
ab019eaa 1928#endif
95670bde 1929 SV *linestr_sv = NULL;
5486870f 1930 bool add_read_e_script = FALSE;
87606032 1931 U32 lex_start_flags = 0;
009d90df 1932
ca7b837b 1933 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1934
6224f72b 1935 init_main_stash();
54310121 1936
c7030b81
NC
1937 {
1938 const char *s;
6224f72b
GS
1939 for (argc--,argv++; argc > 0; argc--,argv++) {
1940 if (argv[0][0] != '-' || !argv[0][1])
1941 break;
6224f72b
GS
1942 s = argv[0]+1;
1943 reswitch:
47f56822 1944 switch ((c = *s)) {
729a02f2 1945 case 'C':
1d5472a9
GS
1946#ifndef PERL_STRICT_CR
1947 case '\r':
1948#endif
6224f72b
GS
1949 case ' ':
1950 case '0':
1951 case 'F':
1952 case 'a':
1953 case 'c':
1954 case 'd':
1955 case 'D':
1956 case 'h':
1957 case 'i':
1958 case 'l':
1959 case 'M':
1960 case 'm':
1961 case 'n':
1962 case 'p':
1963 case 's':
1964 case 'u':
1965 case 'U':
1966 case 'v':
599cee73
PM
1967 case 'W':
1968 case 'X':
6224f72b 1969 case 'w':
97bd5664 1970 if ((s = moreswitches(s)))
6224f72b
GS
1971 goto reswitch;
1972 break;
33b78306 1973
1dbad523 1974 case 't':
dc6d7f5c 1975#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1976 /* silently ignore */
dc6d7f5c 1977#elif defined(NO_TAINT_SUPPORT)
3231f579 1978 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1979 "Cowardly refusing to run with -t or -T flags");
1980#else
22f7c9c9 1981 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1982 if( !TAINTING_get ) {
1983 TAINT_WARN_set(TRUE);
1984 TAINTING_set(TRUE);
317ea90d 1985 }
284167a5 1986#endif
317ea90d
MS
1987 s++;
1988 goto reswitch;
6224f72b 1989 case 'T':
dc6d7f5c 1990#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1991 /* silently ignore */
dc6d7f5c 1992#elif defined(NO_TAINT_SUPPORT)
3231f579 1993 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1994 "Cowardly refusing to run with -t or -T flags");
1995#else
22f7c9c9 1996 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1997 TAINTING_set(TRUE);
1998 TAINT_WARN_set(FALSE);
1999#endif
6224f72b
GS
2000 s++;
2001 goto reswitch;
f86702cc 2002
bc9b29db
RH
2003 case 'E':
2004 PL_minus_E = TRUE;
924ba076 2005 /* FALLTHROUGH */
6224f72b 2006 case 'e':
f20b2998 2007 forbid_setid('e', FALSE);
3280af22 2008 if (!PL_e_script) {
396482e1 2009 PL_e_script = newSVpvs("");
5486870f 2010 add_read_e_script = TRUE;
6224f72b
GS
2011 }
2012 if (*++s)
3280af22 2013 sv_catpv(PL_e_script, s);
6224f72b 2014 else if (argv[1]) {
3280af22 2015 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
2016 argc--,argv++;
2017 }
2018 else
47f56822 2019 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2020 sv_catpvs(PL_e_script, "\n");
6224f72b 2021 break;
afe37c7d 2022
20ef40cf 2023 case 'f':
f5542d3a 2024#ifdef USE_SITECUSTOMIZE
20ef40cf 2025 minus_f = TRUE;
f5542d3a 2026#endif
20ef40cf
GA
2027 s++;
2028 goto reswitch;
2029
6224f72b 2030 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2031 forbid_setid('I', FALSE);
bd61b366 2032 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
2033 argc--,argv++;
2034 }
6224f72b 2035 if (s && *s) {
0df16ed7 2036 STRLEN len = strlen(s);
55b4bc1c 2037 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
2038 }
2039 else
a67e862a 2040 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2041 break;
6224f72b 2042 case 'S':
f20b2998 2043 forbid_setid('S', FALSE);
6224f72b
GS
2044 dosearch = TRUE;
2045 s++;
2046 goto reswitch;
2047 case 'V':
7edfd0ef
NC
2048 {
2049 SV *opts_prog;
2050
7edfd0ef 2051 if (*++s != ':') {
37ca4a5b 2052 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2053 }
2054 else {
2055 ++s;
2056 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2057 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2058 0, s, 0);
2059 s += strlen(s);
2060 }
37ca4a5b 2061 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2062 /* don't look for script or read stdin */
2063 scriptname = BIT_BUCKET;
2064 goto reswitch;
6224f72b 2065 }
6224f72b 2066 case 'x':
737c24fc 2067 doextract = TRUE;
6224f72b 2068 s++;
304334da 2069 if (*s)
f4c556ac 2070 cddir = s;
6224f72b
GS
2071 break;
2072 case 0:
2073 break;
2074 case '-':
2075 if (!*++s || isSPACE(*s)) {
2076 argc--,argv++;
2077 goto switch_end;
2078 }
ee8bc8b7
NC
2079 /* catch use of gnu style long options.
2080 Both of these exit immediately. */
2081 if (strEQ(s, "version"))
2082 minus_v();
2083 if (strEQ(s, "help"))
2084 usage();
6224f72b 2085 s--;
924ba076 2086 /* FALLTHROUGH */
6224f72b 2087 default:
cea2e8a9 2088 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2089 }
2090 }
c7030b81
NC
2091 }
2092
6224f72b 2093 switch_end:
54310121 2094
c7030b81
NC
2095 {
2096 char *s;
2097
f675dbe5
CB
2098 if (
2099#ifndef SECURE_INTERNAL_GETENV
284167a5 2100 !TAINTING_get &&
f675dbe5 2101#endif
cf756827 2102 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2103 {
9e0b0d62
KW
2104 /* s points to static memory in getenv(), which may be overwritten at
2105 * any time; use a mortal copy instead */
2106 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2107
74288ac8
GS
2108 while (isSPACE(*s))
2109 s++;
317ea90d 2110 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2111#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2112 /* silently ignore */
dc6d7f5c 2113#elif defined(NO_TAINT_SUPPORT)
3231f579 2114 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2115 "Cowardly refusing to run with -t or -T flags");
2116#else
22f7c9c9 2117 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2118 TAINTING_set(TRUE);
2119 TAINT_WARN_set(FALSE);
2120#endif
317ea90d 2121 }
74288ac8 2122 else {
bd61b366 2123 char *popt_copy = NULL;
74288ac8 2124 while (s && *s) {
54913509 2125 const char *d;
74288ac8
GS
2126 while (isSPACE(*s))
2127 s++;
2128 if (*s == '-') {
2129 s++;
2130 if (isSPACE(*s))
2131 continue;
2132 }
4ea8f8fb 2133 d = s;
74288ac8
GS
2134 if (!*s)
2135 break;
2b622f1a 2136 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2137 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2138 while (++s && *s) {
2139 if (isSPACE(*s)) {
cf756827 2140 if (!popt_copy) {
bfa6c418
NC
2141 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2142 s = popt_copy + (s - d);
2143 d = popt_copy;
cf756827 2144 }
4ea8f8fb
MS
2145 *s++ = '\0';
2146 break;
2147 }
2148 }
1c4db469 2149 if (*d == 't') {
dc6d7f5c 2150#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2151 /* silently ignore */
dc6d7f5c 2152#elif defined(NO_TAINT_SUPPORT)
3231f579 2153 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2154 "Cowardly refusing to run with -t or -T flags");
2155#else
2156 if( !TAINTING_get) {
2157 TAINT_WARN_set(TRUE);
2158 TAINTING_set(TRUE);
317ea90d 2159 }
284167a5 2160#endif
1c4db469 2161 } else {
97bd5664 2162 moreswitches(d);
1c4db469 2163 }
6224f72b 2164 }
6224f72b
GS
2165 }
2166 }
c7030b81 2167 }
a0d0e21e 2168
c29067d7
CH
2169 /* Set $^X early so that it can be used for relocatable paths in @INC */
2170 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2171 assert (!TAINT_get);
c29067d7 2172 TAINT;
e2051532 2173 set_caret_X();
c29067d7
CH
2174 TAINT_NOT;
2175
43c0c913 2176#if defined(USE_SITECUSTOMIZE)
20ef40cf 2177 if (!minus_f) {
43c0c913 2178 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2179 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2180 ie a q() operator with a NUL byte as a the delimiter. This avoids
2181 problems with pathnames containing (say) ' */
43c0c913
NC
2182# ifdef PERL_IS_MINIPERL
2183 AV *const inc = GvAV(PL_incgv);
2184 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2185
2186 if (inc0) {
15870c5c
NC
2187 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2188 it should be reported immediately as a build failure. */
43c0c913
NC
2189 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2190 Perl_newSVpvf(aTHX_
5de87db5 2191 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2192 "do {local $!; -f $f }"
2193 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2194 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2195 }
2196# else
2197 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2198 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2199 if (raw_sitelib) {
2200 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2201 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2202 INCPUSH_CAN_RELOCATE);
2203 const char *const sitelib = SvPVX(sitelib_sv);
2204 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2205 Perl_newSVpvf(aTHX_
2206 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2207 0, SVfARG(sitelib), 0,
2208 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2209 assert (SvREFCNT(sitelib_sv) == 1);
2210 SvREFCNT_dec(sitelib_sv);
2211 }
43c0c913 2212# endif
20ef40cf
GA
2213 }
2214#endif
2215
6224f72b
GS
2216 if (!scriptname)
2217 scriptname = argv[0];
3280af22 2218 if (PL_e_script) {
6224f72b
GS
2219 argc++,argv--;
2220 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2221 }
bd61b366 2222 else if (scriptname == NULL) {
6224f72b
GS
2223#ifdef MSDOS
2224 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2225 moreswitches("h");
6224f72b
GS
2226#endif
2227 scriptname = "-";
2228 }
2229
284167a5 2230 assert (!TAINT_get);
2cace6ac 2231 init_perllib();
6224f72b 2232
a52eba0e 2233 {
f20b2998 2234 bool suidscript = FALSE;
829372d3 2235
8d113837 2236 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2237 if (!rsfp) {
2238 rsfp = PerlIO_stdin();
87606032 2239 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2240 }
6224f72b 2241
b24bc095 2242 validate_suid(rsfp);
6224f72b 2243
64ca3a65 2244#ifndef PERL_MICRO
a52eba0e
NC
2245# if defined(SIGCHLD) || defined(SIGCLD)
2246 {
2247# ifndef SIGCHLD
2248# define SIGCHLD SIGCLD
2249# endif
2250 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2251 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2252 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2253 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2254 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2255 }
0b5b802d 2256 }
a52eba0e 2257# endif
64ca3a65 2258#endif
0b5b802d 2259
737c24fc 2260 if (doextract) {
faef540c 2261
f20b2998 2262 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2263 setuid scripts. */
2264 forbid_setid('x', suidscript);
f20b2998 2265 /* Hence you can't get here if suidscript is true */
faef540c 2266
95670bde
NC
2267 linestr_sv = newSV_type(SVt_PV);
2268 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2269 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2270 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2271 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2272 }
f4c556ac 2273 }
6224f72b 2274
ea726b52 2275 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2276 CvUNIQUE_on(PL_compcv);
2277
eacbb379 2278 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2279
dd69841b
BB
2280 PL_isarev = newHV();
2281
0c4f7ff0 2282 boot_core_PerlIO();
6224f72b 2283 boot_core_UNIVERSAL();
e1a479c5 2284 boot_core_mro();
4a5df386 2285 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2286
2287 if (xsinit)
acfe0abc 2288 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2289#ifndef PERL_MICRO
739a0b84 2290#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2291 init_os_extras();
6224f72b 2292#endif
64ca3a65 2293#endif
6224f72b 2294
29209bc5 2295#ifdef USE_SOCKS
1b9c9cf5
DH
2296# ifdef HAS_SOCKS5_INIT
2297 socks5_init(argv[0]);
2298# else
29209bc5 2299 SOCKSinit(argv[0]);
1b9c9cf5 2300# endif
ac27b0f5 2301#endif
29209bc5 2302
6224f72b
GS
2303 init_predump_symbols();
2304 /* init_postdump_symbols not currently designed to be called */
2305 /* more than once (ENV isn't cleared first, for example) */
2306 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2307 if (!PL_do_undump)
6224f72b
GS
2308 init_postdump_symbols(argc,argv,env);
2309
27da23d5
JH
2310 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2311 * or explicitly in some platforms.
085a54d9 2312 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2313 * look like the user wants to use UTF-8. */
a0fd4948 2314#if defined(__SYMBIAN32__)
27da23d5
JH
2315 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2316#endif
e27b5b51 2317# ifndef PERL_IS_MINIPERL
06e66572
JH
2318 if (PL_unicode) {
2319 /* Requires init_predump_symbols(). */
a05d7ebb 2320 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2321 IO* io;
2322 PerlIO* fp;
2323 SV* sv;
2324
a05d7ebb 2325 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2326 * and the default open disciplines. */
a05d7ebb
JH
2327 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2328 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2329 (fp = IoIFP(io)))
2330 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2331 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2332 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2333 (fp = IoOFP(io)))
2334 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2335 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2336 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2337 (fp = IoOFP(io)))
2338 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2339 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2340 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2341 SVt_PV)))) {
a05d7ebb
JH
2342 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2343 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2344 if (in) {
2345 if (out)
76f68e9b 2346 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2347 else
76f68e9b 2348 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2349 }
2350 else if (out)
76f68e9b 2351 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2352 SvSETMAGIC(sv);
2353 }
b310b053
JH
2354 }
2355 }
e27b5b51 2356#endif
b310b053 2357
c7030b81
NC
2358 {
2359 const char *s;
4ffa73a3
JH
2360 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2361 if (strEQ(s, "unsafe"))
2362 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2363 else if (strEQ(s, "safe"))
2364 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2365 else
2366 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2367 }
c7030b81 2368 }
4ffa73a3 2369
81d86705 2370
87606032 2371 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2372 SvREFCNT_dec(linestr_sv);
95670bde 2373
219f7226 2374 PL_subname = newSVpvs("main");
6224f72b 2375
5486870f
DM
2376 if (add_read_e_script)
2377 filter_add(read_e_script, NULL);
2378
6224f72b
GS
2379 /* now parse the script */
2380
93189314 2381 SETERRNO(0,SS_NORMAL);
28ac2b49 2382 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2383 if (PL_minus_c)
cea2e8a9 2384 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2385 else {
cea2e8a9 2386 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2387 PL_origfilename);
6224f72b
GS
2388 }
2389 }
57843af0 2390 CopLINE_set(PL_curcop, 0);
03d9f026 2391 SET_CURSTASH(PL_defstash);
3280af22
NIS
2392 if (PL_e_script) {
2393 SvREFCNT_dec(PL_e_script);
a0714e2c 2394 PL_e_script = NULL;
6224f72b
GS
2395 }
2396
3280af22 2397 if (PL_do_undump)
6224f72b
GS
2398 my_unexec();
2399
57843af0
GS
2400 if (isWARN_ONCE) {
2401 SAVECOPFILE(PL_curcop);
2402 SAVECOPLINE(PL_curcop);
3280af22 2403 gv_check(PL_defstash);
57843af0 2404 }
6224f72b
GS
2405
2406 LEAVE;
2407 FREETMPS;
2408
2409#ifdef MYMALLOC
f6a607bc
RGS
2410 {
2411 const char *s;
22ff3130
HS
2412 UV uv;
2413 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2414 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2415 dump_mstats("after compilation:");
f6a607bc 2416 }
6224f72b
GS
2417#endif
2418
2419 ENTER;
febb3a6d 2420 PL_restartjmpenv = NULL;
3280af22 2421 PL_restartop = 0;
312caa8e 2422 return NULL;
6224f72b
GS
2423}
2424
954c1994
GS
2425/*
2426=for apidoc perl_run
2427
2428Tells a Perl interpreter to run. See L<perlembed>.
2429
2430=cut
2431*/
2432
6224f72b 2433int
0cb96387 2434perl_run(pTHXx)
6224f72b 2435{
6224f72b 2436 I32 oldscope;
14dd3ad8 2437 int ret = 0;
db36c5a1 2438 dJMPENV;
6224f72b 2439
7918f24d
NC
2440 PERL_ARGS_ASSERT_PERL_RUN;
2441#ifndef MULTIPLICITY
ed6c66dd 2442 PERL_UNUSED_ARG(my_perl);
7918f24d 2443#endif
9d4ba2ae 2444
3280af22 2445 oldscope = PL_scopestack_ix;
96e176bf
CL
2446#ifdef VMS
2447 VMSISH_HUSHED = 0;
2448#endif
6224f72b 2449
14dd3ad8 2450 JMPENV_PUSH(ret);
6224f72b
GS
2451 switch (ret) {
2452 case 1:
2453 cxstack_ix = -1; /* start context stack again */
312caa8e 2454 goto redo_body;
14dd3ad8 2455 case 0: /* normal completion */
14dd3ad8
GS
2456 redo_body:
2457 run_body(oldscope);
924ba076 2458 /* FALLTHROUGH */
14dd3ad8 2459 case 2: /* my_exit() */
3280af22 2460 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2461 LEAVE;
2462 FREETMPS;
03d9f026 2463 SET_CURSTASH(PL_defstash);
3a1ee7e8 2464 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2465 PL_endav && !PL_minus_c) {
ca7b837b 2466 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2467 call_list(oldscope, PL_endav);
9ebf26ad 2468 }
6224f72b
GS
2469#ifdef MYMALLOC
2470 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2471 dump_mstats("after execution: ");
2472#endif
37038d91 2473 ret = STATUS_EXIT;
14dd3ad8 2474 break;
6224f72b 2475 case 3:
312caa8e
CS
2476 if (PL_restartop) {
2477 POPSTACK_TO(PL_mainstack);
2478 goto redo_body;
6224f72b 2479 }
5637ef5b 2480 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2481 FREETMPS;
14dd3ad8
GS
2482 ret = 1;
2483 break;
6224f72b
GS
2484 }
2485
14dd3ad8
GS
2486 JMPENV_POP;
2487 return ret;
312caa8e
CS
2488}
2489
dd374669 2490STATIC void
14dd3ad8
GS
2491S_run_body(pTHX_ I32 oldscope)
2492{
d3b97530
DM
2493 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2494 PL_sawampersand ? "Enabling" : "Omitting",
2495 (unsigned int)(PL_sawampersand)));
6224f72b 2496
3280af22 2497 if (!PL_restartop) {
cf2782cd 2498#ifdef DEBUGGING
f0e3f042
CS
2499 if (DEBUG_x_TEST || DEBUG_B_TEST)
2500 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2501 if (!DEBUG_q_TEST)
2502 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2503#endif
6224f72b 2504
3280af22 2505 if (PL_minus_c) {
bf49b057 2506 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2507 my_exit(0);
2508 }
3280af22 2509 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2510 PL_DBsingle_iv = 1;
9ebf26ad 2511 if (PL_initav) {
ca7b837b 2512 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2513 call_list(oldscope, PL_initav);
9ebf26ad 2514 }
f1fac472 2515#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2516 if (PL_main_root && PL_main_root->op_slabbed)
2517 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2518#endif
6224f72b
GS
2519 }
2520
2521 /* do it */
2522
ca7b837b 2523 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2524
3280af22 2525 if (PL_restartop) {
febb3a6d 2526 PL_restartjmpenv = NULL;
533c011a 2527 PL_op = PL_restartop;
3280af22 2528 PL_restartop = 0;
cea2e8a9 2529 CALLRUNOPS(aTHX);
6224f72b 2530 }
3280af22
NIS
2531 else if (PL_main_start) {
2532 CvDEPTH(PL_main_cv) = 1;
533c011a 2533 PL_op = PL_main_start;
cea2e8a9 2534 CALLRUNOPS(aTHX);
6224f72b 2535 }
f6b3007c 2536 my_exit(0);
e5964223 2537 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2538}
2539
954c1994 2540/*
ccfc67b7
JH
2541=head1 SV Manipulation Functions
2542
954c1994
GS
2543=for apidoc p||get_sv
2544
64ace3f8 2545Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2546C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2547Perl variable does not exist then it will be created. If C<flags> is zero
2548and the variable does not exist then NULL is returned.
954c1994
GS
2549
2550=cut
2551*/
2552
6224f72b 2553SV*
64ace3f8 2554Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2555{
2556 GV *gv;
7918f24d
NC
2557
2558 PERL_ARGS_ASSERT_GET_SV;
2559
64ace3f8 2560 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2561 if (gv)
2562 return GvSV(gv);
a0714e2c 2563 return NULL;
6224f72b
GS
2564}
2565
954c1994 2566/*
ccfc67b7
JH
2567=head1 Array Manipulation Functions
2568
954c1994
GS
2569=for apidoc p||get_av
2570
f0b90de1
SF
2571Returns the AV of the specified Perl global or package array with the given
2572name (so it won't work on lexical variables). C<flags> are passed
72d33970 2573to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2574Perl variable does not exist then it will be created. If C<flags> is zero
2575and the variable does not exist then NULL is returned.
954c1994 2576
f0b90de1
SF
2577Perl equivalent: C<@{"$name"}>.
2578
954c1994
GS
2579=cut
2580*/
2581
6224f72b 2582AV*
cbfd0a87 2583Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2584{
cbfd0a87 2585 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2586
2587 PERL_ARGS_ASSERT_GET_AV;
2588
cbfd0a87 2589 if (flags)
6224f72b
GS
2590 return GvAVn(gv);
2591 if (gv)
2592 return GvAV(gv);
7d49f689 2593 return NULL;
6224f72b
GS
2594}
2595
954c1994 2596/*
ccfc67b7
JH
2597=head1 Hash Manipulation Functions
2598
954c1994
GS
2599=for apidoc p||get_hv
2600
6673a63c 2601Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2602C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2603Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2604and the variable does not exist then C<NULL> is returned.
954c1994
GS
2605
2606=cut
2607*/
2608
6224f72b 2609HV*
6673a63c 2610Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2611{
6673a63c 2612 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2613
2614 PERL_ARGS_ASSERT_GET_HV;
2615
6673a63c 2616 if (flags)
a0d0e21e
LW
2617 return GvHVn(gv);
2618 if (gv)
2619 return GvHV(gv);
5c284bb0 2620 return NULL;
a0d0e21e
LW
2621}
2622
954c1994 2623/*
ccfc67b7
JH
2624=head1 CV Manipulation Functions
2625
780a5241
NC
2626=for apidoc p||get_cvn_flags
2627
2628Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2629C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2630exist then it will be declared (which has the same effect as saying
2631C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2632then NULL is returned.
2633
954c1994
GS
2634=for apidoc p||get_cv
2635
780a5241 2636Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2637
2638=cut
2639*/
2640
a0d0e21e 2641CV*
780a5241 2642Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2643{
780a5241 2644 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2645
2646 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2647
334dda80
FC
2648 /* XXX this is probably not what they think they're getting.
2649 * It has the same effect as "sub name;", i.e. just a forward
2650 * declaration! */
780a5241 2651 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2652 return newSTUB(gv,0);
780a5241 2653 }
a0d0e21e 2654 if (gv)
8ebc5c01 2655 return GvCVu(gv);
601f1833 2656 return NULL;
a0d0e21e
LW
2657}
2658
2c67934f
NC
2659/* Nothing in core calls this now, but we can't replace it with a macro and
2660 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2661CV*
2662Perl_get_cv(pTHX_ const char *name, I32 flags)
2663{
7918f24d
NC
2664 PERL_ARGS_ASSERT_GET_CV;
2665
780a5241
NC
2666 return get_cvn_flags(name, strlen(name), flags);
2667}
2668
79072805
LW
2669/* Be sure to refetch the stack pointer after calling these routines. */
2670
954c1994 2671/*
ccfc67b7
JH
2672
2673=head1 Callback Functions
2674
954c1994
GS
2675=for apidoc p||call_argv
2676
f0b90de1 2677Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2678with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2679L<perlcall>.
f0b90de1
SF
2680
2681Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2682
2683=cut
2684*/
2685
a0d0e21e 2686I32
5aaab254 2687Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2688
8ac85365
NIS
2689 /* See G_* flags in cop.h */
2690 /* null terminated arg list */
8990e307 2691{
a0d0e21e 2692 dSP;
8990e307 2693
7918f24d
NC
2694 PERL_ARGS_ASSERT_CALL_ARGV;
2695
924508f0 2696 PUSHMARK(SP);
3dc78631
DM
2697 while (*argv) {
2698 mXPUSHs(newSVpv(*argv,0));
2699 argv++;
8990e307 2700 }
3dc78631 2701 PUTBACK;
864dbfa3 2702 return call_pv(sub_name, flags);
8990e307
LW
2703}
2704
954c1994
GS
2705/*
2706=for apidoc p||call_pv
2707
2708Performs a callback to the specified Perl sub. See L<perlcall>.
2709
2710=cut
2711*/
2712
a0d0e21e 2713I32
864dbfa3 2714Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2715 /* name of the subroutine */
2716 /* See G_* flags in cop.h */
a0d0e21e 2717{
7918f24d
NC
2718 PERL_ARGS_ASSERT_CALL_PV;
2719
0da0e728 2720 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2721}
2722
954c1994
GS
2723/*
2724=for apidoc p||call_method
2725
2726Performs a callback to the specified Perl method. The blessed object must
2727be on the stack. See L<perlcall>.
2728
2729=cut
2730*/
2731
a0d0e21e 2732I32
864dbfa3 2733Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2734 /* name of the subroutine */
2735 /* See G_* flags in cop.h */
a0d0e21e 2736{
46ca9bac 2737 STRLEN len;
c106c2be 2738 SV* sv;
7918f24d
NC
2739 PERL_ARGS_ASSERT_CALL_METHOD;
2740
46ca9bac 2741 len = strlen(methname);
c106c2be
RZ
2742 sv = flags & G_METHOD_NAMED
2743 ? sv_2mortal(newSVpvn_share(methname, len,0))
2744 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2745
c106c2be 2746 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2747}
2748
2749/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2750/*
2751=for apidoc p||call_sv
2752
078e2213
TC
2753Performs a callback to the Perl sub specified by the SV.
2754
7c0c544c 2755If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2756SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2757or C<SvPV(sv)> will be used as the name of the sub to call.
2758
2759If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2760C<SvPV(sv)> will be used as the name of the method to call.
2761
2762If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2763the name of the method to call.
2764
2765Some other values are treated specially for internal use and should
2766not be depended on.
2767
2768See L<perlcall>.
954c1994
GS
2769
2770=cut
2771*/
2772
a0d0e21e 2773I32
001d637e 2774Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2775 /* See G_* flags in cop.h */
a0d0e21e 2776{
5b434c73 2777 dVAR;
a0d0e21e 2778 LOGOP myop; /* fake syntax tree node */
b46e009d 2779 METHOP method_op;
aa689395 2780 I32 oldmark;
8ea43dc8 2781 VOL I32 retval = 0;
54310121 2782 bool oldcatch = CATCH_GET;
6224f72b 2783 int ret;
c4420975 2784 OP* const oldop = PL_op;
db36c5a1 2785 dJMPENV;
1e422769 2786
7918f24d
NC
2787 PERL_ARGS_ASSERT_CALL_SV;
2788
a0d0e21e
LW
2789 if (flags & G_DISCARD) {
2790 ENTER;
2791 SAVETMPS;
2792 }
2f8edad0
NC
2793 if (!(flags & G_WANT)) {
2794 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2795 */
2796 flags |= G_SCALAR;
2797 }
a0d0e21e 2798
aa689395 2799 Zero(&myop, 1, LOGOP);
f51d4af5 2800 if (!(flags & G_NOARGS))
aa689395 2801 myop.op_flags |= OPf_STACKED;
4f911530 2802 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2803 SAVEOP();
533c011a 2804 PL_op = (OP*)&myop;
aa689395 2805
8c9009ad 2806 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2807 dSP;
2808 EXTEND(SP, 1);
8c9009ad
DD
2809 PUSHs(sv);
2810 PUTBACK;
5b434c73 2811 }
aa689395 2812 oldmark = TOPMARK;
a0d0e21e 2813
3280af22 2814 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2815 /* Handle first BEGIN of -d. */
3280af22 2816 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2817 /* Try harder, since this may have been a sighandler, thus
2818 * curstash may be meaningless. */
ea726b52 2819 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2820 && !(flags & G_NODEBUG))
5ff48db8 2821 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2822
c106c2be 2823 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2824 Zero(&method_op, 1, METHOP);
2825 method_op.op_next = (OP*)&myop;
2826 PL_op = (OP*)&method_op;
c106c2be 2827 if ( flags & G_METHOD_NAMED ) {
b46e009d 2828 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2829 method_op.op_type = OP_METHOD_NAMED;
2830 method_op.op_u.op_meth_sv = sv;
c106c2be 2831 } else {
b46e009d 2832 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2833 method_op.op_type = OP_METHOD;
c106c2be
RZ
2834 }
2835 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2836 myop.op_type = OP_ENTERSUB;
968b3946
GS
2837 }
2838
312caa8e 2839 if (!(flags & G_EVAL)) {
0cdb2077 2840 CATCH_SET(TRUE);
d6f07c05 2841 CALL_BODY_SUB((OP*)&myop);
312caa8e 2842 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2843 CATCH_SET(oldcatch);
312caa8e
CS
2844 }
2845 else {
8e90e786 2846 I32 old_cxix;
d78bda3d 2847 myop.op_other = (OP*)&myop;
101d6365 2848 (void)POPMARK;
8e90e786 2849 old_cxix = cxstack_ix;
274ed8ae 2850 create_eval_scope(NULL, flags|G_FAKINGEVAL);
c318a6ee 2851 INCMARK;
a0d0e21e 2852
14dd3ad8 2853 JMPENV_PUSH(ret);
edb2152a 2854
6224f72b
GS
2855 switch (ret) {
2856 case 0:
14dd3ad8 2857 redo_body:
d6f07c05 2858 CALL_BODY_SUB((OP*)&myop);
312caa8e 2859 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2860 if (!(flags & G_KEEPERR)) {
ab69dbc2 2861 CLEAR_ERRSV();
8433848b 2862 }
a0d0e21e 2863 break;
6224f72b 2864 case 1:
f86702cc 2865 STATUS_ALL_FAILURE;
924ba076 2866 /* FALLTHROUGH */
6224f72b 2867 case 2:
a0d0e21e 2868 /* my_exit() was called */
03d9f026 2869 SET_CURSTASH(PL_defstash);
a0d0e21e 2870 FREETMPS;
14dd3ad8 2871 JMPENV_POP;
f86702cc 2872 my_exit_jump();
e5964223 2873 NOT_REACHED; /* NOTREACHED */
6224f72b 2874 case 3:
3280af22 2875 if (PL_restartop) {
febb3a6d 2876 PL_restartjmpenv = NULL;
533c011a 2877 PL_op = PL_restartop;
3280af22 2878 PL_restartop = 0;
312caa8e 2879 goto redo_body;
a0d0e21e 2880 }
3280af22 2881 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2882 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2883 retval = 0;
2884 else {
2885 retval = 1;
3280af22 2886 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2887 }
312caa8e 2888 break;
a0d0e21e 2889 }
a0d0e21e 2890
8e90e786
DM
2891 /* if we croaked, depending on how we croaked the eval scope
2892 * may or may not have already been popped */
2893 if (cxstack_ix > old_cxix) {
2894 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2895 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2896 delete_eval_scope();
8e90e786 2897 }
14dd3ad8 2898 JMPENV_POP;
a0d0e21e 2899 }
1e422769 2900
a0d0e21e 2901 if (flags & G_DISCARD) {
3280af22 2902 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2903 retval = 0;
2904 FREETMPS;
2905 LEAVE;
2906 }
533c011a 2907 PL_op = oldop;
a0d0e21e
LW
2908 return retval;
2909}
2910
6e72f9df 2911/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2912
954c1994
GS
2913/*
2914=for apidoc p||eval_sv
2915
72d33970 2916Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2917as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2918
2919=cut
2920*/
2921
a0d0e21e 2922I32
864dbfa3 2923Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2924
8ac85365 2925 /* See G_* flags in cop.h */
a0d0e21e 2926{
97aff369 2927 dVAR;
a0d0e21e 2928 UNOP myop; /* fake syntax tree node */
5b434c73 2929 VOL I32 oldmark;
8ea43dc8 2930 VOL I32 retval = 0;
6224f72b 2931 int ret;
c4420975 2932 OP* const oldop = PL_op;
db36c5a1 2933 dJMPENV;
84902520 2934
7918f24d
NC
2935 PERL_ARGS_ASSERT_EVAL_SV;
2936
4633a7c4
LW
2937 if (flags & G_DISCARD) {
2938 ENTER;
2939 SAVETMPS;
2940 }
2941
462e5cf6 2942 SAVEOP();
533c011a 2943 PL_op = (OP*)&myop;
5ff48db8 2944 Zero(&myop, 1, UNOP);
5b434c73
DD
2945 {
2946 dSP;
2947 oldmark = SP - PL_stack_base;
2948 EXTEND(SP, 1);
2949 PUSHs(sv);
2950 PUTBACK;
2951 }
79072805 2952
4633a7c4
LW
2953 if (!(flags & G_NOARGS))
2954 myop.op_flags = OPf_STACKED;
6e72f9df 2955 myop.op_type = OP_ENTEREVAL;
4f911530 2956 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2957 if (flags & G_KEEPERR)
2958 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2959
2960 if (flags & G_RE_REPARSING)
2961 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2962
dedbcade 2963 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 2964 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
2965 TAINT_PROPER("eval_sv()");
2966
14dd3ad8 2967 JMPENV_PUSH(ret);
6224f72b
GS
2968 switch (ret) {
2969 case 0:
14dd3ad8 2970 redo_body:
2ba65d5f
DM
2971 if (PL_op == (OP*)(&myop)) {
2972 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2973 if (!PL_op)
2974 goto fail; /* failed in compilation */
2975 }
4aca2f62 2976 CALLRUNOPS(aTHX);
312caa8e 2977 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2978 if (!(flags & G_KEEPERR)) {
ab69dbc2 2979 CLEAR_ERRSV();
8433848b 2980 }
4633a7c4 2981 break;
6224f72b 2982 case 1:
f86702cc 2983 STATUS_ALL_FAILURE;
924ba076 2984 /* FALLTHROUGH */
6224f72b 2985 case 2:
4633a7c4 2986 /* my_exit() was called */
03d9f026 2987 SET_CURSTASH(PL_defstash);
4633a7c4 2988 FREETMPS;
14dd3ad8 2989 JMPENV_POP;
f86702cc 2990 my_exit_jump();
e5964223 2991 NOT_REACHED; /* NOTREACHED */
6224f72b 2992 case 3:
3280af22 2993 if (PL_restartop) {
febb3a6d 2994 PL_restartjmpenv = NULL;
533c011a 2995 PL_op = PL_restartop;
3280af22 2996 PL_restartop = 0;
312caa8e 2997 goto redo_body;
4633a7c4 2998 }
4aca2f62 2999 fail:
3280af22 3000 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 3001 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
3002 retval = 0;
3003 else {
3004 retval = 1;
3280af22 3005 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 3006 }
312caa8e 3007 break;
4633a7c4
LW
3008 }
3009
14dd3ad8 3010 JMPENV_POP;
4633a7c4 3011 if (flags & G_DISCARD) {
3280af22 3012 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
3013 retval = 0;
3014 FREETMPS;
3015 LEAVE;
3016 }
533c011a 3017 PL_op = oldop;
4633a7c4
LW
3018 return retval;
3019}
3020
954c1994
GS
3021/*
3022=for apidoc p||eval_pv
3023
422791e4 3024Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
3025
3026=cut
3027*/
3028
137443ea 3029SV*
864dbfa3 3030Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3031{
137443ea
PP
3032 SV* sv = newSVpv(p, 0);
3033
7918f24d
NC
3034 PERL_ARGS_ASSERT_EVAL_PV;
3035
864dbfa3 3036 eval_sv(sv, G_SCALAR);
137443ea
PP
3037 SvREFCNT_dec(sv);
3038
ed1786ad
DD
3039 {
3040 dSP;
3041 sv = POPs;
3042 PUTBACK;
3043 }
137443ea 3044
eed484f9
DD
3045 /* just check empty string or undef? */
3046 if (croak_on_error) {
3047 SV * const errsv = ERRSV;
3048 if(SvTRUE_NN(errsv))
3049 /* replace with croak_sv? */
3050 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3051 }
137443ea
PP
3052
3053 return sv;
3054}
3055
4633a7c4
LW
3056/* Require a module. */
3057
954c1994 3058/*
ccfc67b7
JH
3059=head1 Embedding Functions
3060
954c1994
GS
3061=for apidoc p||require_pv
3062
7d3fb230
BS
3063Tells Perl to C<require> the file named by the string argument. It is
3064analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3065implemented that way; consider using load_module instead.
954c1994 3066
7d3fb230 3067=cut */
954c1994 3068
4633a7c4 3069void
864dbfa3 3070Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3071{
d3acc0f7 3072 dSP;
97aff369 3073 SV* sv;
7918f24d
NC
3074
3075 PERL_ARGS_ASSERT_REQUIRE_PV;
3076
e788e7d3 3077 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3078 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3079 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3080 POPSTACK;
79072805
LW
3081}
3082
76e3520e 3083STATIC void
b6f82619 3084S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3085{
ab821d7f 3086 /* This message really ought to be max 23 lines.
75c72d73 3087 * Removed -h because the user already knows that option. Others? */
fb73857a 3088
1566c39d
NC
3089 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3090 minimum of 509 character string literals. */
27da23d5 3091 static const char * const usage_msg[] = {
1566c39d
NC
3092" -0[octal] specify record separator (\\0, if no argument)\n"
3093" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3094" -C[number/list] enables the listed Unicode features\n"
3095" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3096" -d[:debugger] run program under debugger\n"
3097" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3098" -e program one line of program (several -e's allowed, omit programfile)\n"
3099" -E program like -e, but enables all optional features\n"
3100" -f don't do $sitelib/sitecustomize.pl at startup\n"
3101" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3102" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3103" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3104" -l[octal] enable line ending processing, specifies line terminator\n"
3105" -[mM][-]module execute \"use/no module...\" before executing program\n"
3106" -n assume \"while (<>) { ... }\" loop around program\n"
3107" -p assume loop like -n but print line also, like sed\n"
3108" -s enable rudimentary parsing for switches after programfile\n"
3109" -S look for programfile using PATH environment variable\n",
3110" -t enable tainting warnings\n"
3111" -T enable tainting checks\n"
3112" -u dump core after parsing program\n"
3113" -U allow unsafe operations\n"
3114" -v print version, patchlevel and license\n"
3115" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3116" -w enable many useful warnings\n"
1566c39d
NC
3117" -W enable all warnings\n"
3118" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3119" -X disable all warnings\n"
3120" \n"
3121"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3122NULL
3123};
27da23d5 3124 const char * const *p = usage_msg;
1566c39d 3125 PerlIO *out = PerlIO_stdout();
fb73857a 3126
1566c39d
NC
3127 PerlIO_printf(out,
3128 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3129 PL_origargv[0]);
fb73857a 3130 while (*p)
1566c39d 3131 PerlIO_puts(out, *p++);
b6f82619 3132 my_exit(0);
4633a7c4
LW
3133}
3134
b4ab917c
DM
3135/* convert a string of -D options (or digits) into an int.
3136 * sets *s to point to the char after the options */
3137
3138#ifdef DEBUGGING
3139int
e1ec3a88 3140Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3141{
27da23d5 3142 static const char * const usage_msgd[] = {
651b8f1a
NC
3143 " Debugging flag values: (see also -d)\n"
3144 " p Tokenizing and parsing (with v, displays parse stack)\n"
3145 " s Stack snapshots (with v, displays all stacks)\n"
3146 " l Context (loop) stack processing\n"
3147 " t Trace execution\n"
3148 " o Method and overloading resolution\n",
3149 " c String/numeric conversions\n"
3150 " P Print profiling info, source file input state\n"
3151 " m Memory and SV allocation\n"
3152 " f Format processing\n"
3153 " r Regular expression parsing and execution\n"
3154 " x Syntax tree dump\n",
3155 " u Tainting checks\n"
3156 " H Hash dump -- usurps values()\n"
3157 " X Scratchpad allocation\n"
3158 " D Cleaning up\n"
56967202 3159 " S Op slab allocation\n"
651b8f1a
NC
3160 " T Tokenising\n"
3161 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3162 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3163 " v Verbose: use in conjunction with other flags\n"
3164 " C Copy On Write\n"
3165 " A Consistency checks on internal structures\n"
3166 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3167 " M trace smart match resolution\n"
3168 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3169 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3170 " i trace PerlIO layer processing\n",
e6e64d9b
JC
3171 NULL
3172 };
22ff3130 3173 UV uv = 0;
7918f24d
NC
3174
3175 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3176
b4ab917c
DM
3177 if (isALPHA(**s)) {
3178 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3179 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3180
0eb30aeb 3181 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3182 const char * const d = strchr(debopts,**s);
b4ab917c 3183 if (d)
22ff3130 3184 uv |= 1 << (d - debopts);
b4ab917c 3185 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3186 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3187 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3188 }
3189 }
e6e64d9b 3190 else if (isDIGIT(**s)) {
96e440d2 3191 const char* e;
22ff3130 3192 if (grok_atoUV(*s, &uv, &e))
96e440d2 3193 *s = e;
0eb30aeb 3194 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3195 }
ddcf8bc1 3196 else if (givehelp) {
06e869a4 3197 const char *const *p = usage_msgd;
651b8f1a 3198 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3199 }
22ff3130 3200 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3201}
3202#endif
3203
79072805
LW
3204/* This routine handles any switches that can be given during run */
3205
c7030b81
NC
3206const char *
3207Perl_moreswitches(pTHX_ const char *s)
79072805 3208{
27da23d5 3209 dVAR;
84c133a0 3210 UV rschar;
0544e6df 3211 const char option = *s; /* used to remember option in -m/-M code */
79072805 3212
7918f24d
NC
3213 PERL_ARGS_ASSERT_MORESWITCHES;
3214
79072805
LW
3215 switch (*s) {
3216 case '0':
a863c7d1 3217 {
f2095865 3218 I32 flags = 0;
a3b680e6 3219 STRLEN numlen;
f2095865
JH
3220
3221 SvREFCNT_dec(PL_rs);
3222 if (s[1] == 'x' && s[2]) {
a3b680e6 3223 const char *e = s+=2;
f2095865
JH
3224 U8 *tmps;
3225
a3b680e6
AL
3226 while (*e)
3227 e++;
f2095865
JH
3228 numlen = e - s;
3229 flags = PERL_SCAN_SILENT_ILLDIGIT;
3230 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3231 if (s + numlen < e) {
3232 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3233 numlen = 0;
3234 s--;
3235 }
396482e1 3236 PL_rs = newSVpvs("");
5f560d8a 3237 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865
JH
3238 tmps = (U8*)SvPVX(PL_rs);
3239 uvchr_to_utf8(tmps, rschar);
5f560d8a 3240 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3241 SvUTF8_on(PL_rs);
3242 }
3243 else {
3244 numlen = 4;
3245 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3246 if (rschar & ~((U8)~0))
3247 PL_rs = &PL_sv_undef;
3248 else if (!rschar && numlen >= 2)
396482e1 3249 PL_rs = newSVpvs("");
f2095865
JH
3250 else {
3251 char ch = (char)rschar;
3252 PL_rs = newSVpvn(&ch, 1);
3253 }
3254 }
64ace3f8 3255 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3256 return s + numlen;
a863c7d1 3257 }
46487f74 3258 case 'C':
a05d7ebb 3259 s++;
dd374669 3260 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3261 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3262 PL_utf8cache = -1;
46487f74 3263 return s;
2304df62 3264 case 'F':
5fc691f1 3265 PL_minus_a = TRUE;
3280af22 3266 PL_minus_F = TRUE;
24ffa309 3267 PL_minus_n = TRUE;
ebce5377
RGS
3268 PL_splitstr = ++s;
3269 while (*s && !isSPACE(*s)) ++s;
e49e380e 3270 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3271 return s;
79072805 3272 case 'a':
3280af22 3273 PL_minus_a = TRUE;
24ffa309 3274 PL_minus_n = TRUE;
79072805
LW
3275 s++;
3276 return s;
3277 case 'c':
3280af22 3278 PL_minus_c = TRUE;
79072805
LW
3279 s++;
3280 return s;
3281 case 'd':
f20b2998 3282 forbid_setid('d', FALSE);
4633a7c4 3283 s++;
2cbb2ee1
RGS
3284
3285 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3286 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3287 ++s;
3288 my_setenv("PERL5DB_THREADED", "1");
3289 }
3290
70c94a19
RR
3291 /* The following permits -d:Mod to accepts arguments following an =
3292 in the fashion that -MSome::Mod does. */
3293 if (*s == ':' || *s == '=') {
b19934fb
NC
3294 const char *start;
3295 const char *end;
3296 SV *sv;
3297
3298 if (*++s == '-') {
3299 ++s;
3300 sv = newSVpvs("no Devel::");
3301 } else {
3302 sv = newSVpvs("use Devel::");
3303 }
3304
3305 start = s;
3306 end = s + strlen(s);
f85893a1 3307
b19934fb 3308 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3309 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3310 if (*s != '=')
f85893a1 3311 sv_catpvn(sv, start, end - start);
70c94a19
RR
3312 else {
3313 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3314 /* Don't use NUL as q// delimiter here, this string goes in the
3315 * environment. */
3316 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3317 }
f85893a1 3318 s = end;
184f32ec 3319 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3320 SvREFCNT_dec(sv);
4633a7c4 3321 }
ed094faf 3322 if (!PL_perldb) {
3280af22 3323 PL_perldb = PERLDB_ALL;
a0d0e21e 3324 init_debugger();
ed094faf 3325 }
79072805
LW
3326 return s;
3327 case 'D':
0453d815 3328 {
79072805 3329#ifdef DEBUGGING
f20b2998 3330 forbid_setid('D', FALSE);
b4ab917c 3331 s++;
dd374669 3332 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3333#else /* !DEBUGGING */
0453d815 3334 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3335 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3336 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3337 for (s++; isWORDCHAR(*s); s++) ;
79072805 3338#endif
79072805 3339 return s;
2b5060ae 3340 NOT_REACHED; /* NOTREACHED */
0453d815 3341 }
4633a7c4 3342 case 'h':
b6f82619 3343 usage();
2b5060ae
DM
3344 NOT_REACHED; /* NOTREACHED */
3345
79072805 3346 case 'i':
43c5f42d 3347 Safefree(PL_inplace);
c030f24b
GH
3348#if defined(__CYGWIN__) /* do backup extension automagically */
3349 if (*(s+1) == '\0') {
c86a4f2e 3350 PL_inplace = savepvs(".bak");
c030f24b
GH
3351 return s+1;
3352 }
3353#endif /* __CYGWIN__ */
5ef5d758 3354 {
d4c19fe8 3355 const char * const start = ++s;
5ef5d758
NC
3356 while (*s && !isSPACE(*s))
3357 ++s;
3358
3359 PL_inplace = savepvn(start, s - start);
3360 }
7b8d334a 3361 if (*s) {
5ef5d758 3362 ++s;
7b8d334a 3363 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3364 s++;
7b8d334a 3365 }
fb73857a 3366 return s;
4e49a025 3367 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3368 forbid_setid('I', FALSE);
fb73857a
PP
3369 ++s;
3370 while (*s && isSPACE(*s))
3371 ++s;
3372 if (*s) {
c7030b81 3373 const char *e, *p;
0df16ed7
GS
3374 p = s;
3375 /* ignore trailing spaces (possibly followed by other switches) */
3376 do {
3377 for (e = p; *e && !isSPACE(*e); e++) ;
3378 p = e;
3379 while (isSPACE(*p))
3380 p++;
3381 } while (*p && *p != '-');
55b4bc1c 3382 incpush(s, e-s,
e28f3139 3383 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3384 s = p;
3385 if (*s == '-')
3386 s++;
79072805
LW
3387 }
3388 else
a67e862a 3389 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3390 return s;
79072805 3391 case 'l':
3280af22 3392 PL_minus_l = TRUE;
79072805 3393 s++;
7889fe52
NIS
3394 if (PL_ors_sv) {
3395 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3396 PL_ors_sv = NULL;
7889fe52 3397 }
79072805 3398 if (isDIGIT(*s)) {
53305cf1 3399 I32 flags = 0;
a3b680e6 3400 STRLEN numlen;
396482e1 3401 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3402 numlen = 3 + (*s == '0');
3403 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3404 s += numlen;
3405 }
3406 else {
8bfdd7d9 3407 if (RsPARA(PL_rs)) {
396482e1 3408 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3409 }
3410 else {
8bfdd7d9 3411 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3412 }
79072805
LW
3413 }
3414 return s;
1a30305b 3415 case 'M':
f20b2998 3416 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3417 /* FALLTHROUGH */
1a30305b 3418 case 'm':
f20b2998 3419 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3420 if (*++s) {
c7030b81 3421 const char *start;
b64cb68c 3422 const char *end;
11343788 3423 SV *sv;
e1ec3a88 3424 const char *use = "use ";
0544e6df 3425 bool colon = FALSE;
a5f75d66 3426 /* -M-foo == 'no foo' */
d0043bd1
NC
3427 /* Leading space on " no " is deliberate, to make both
3428 possibilities the same length. */
3429 if (*s == '-') { use = " no "; ++s; }
3430 sv = newSVpvn(use,4);
a5f75d66 3431 start = s;
1a30305b 3432 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3433 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3434 if( *s++ == ':' ) {
3435 if( *s == ':' )
3436 s++;
3437 else
3438 colon = TRUE;
3439 }
3440 }
3441 if (s == start)
3442 Perl_croak(aTHX_ "Module name required with -%c option",
3443 option);
3444 if (colon)
3445 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3446 "contains single ':'",
63da6837 3447 (int)(s - start), start, option);
b64cb68c 3448 end = s + strlen(s);
c07a80fd 3449 if (*s != '=') {
b64cb68c 3450 sv_catpvn(sv, start, end - start);
0544e6df 3451 if (option == 'm') {
c07a80fd 3452 if (*s != '\0')
cea2e8a9 3453 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3454 sv_catpvs( sv, " ()");
c07a80fd
PP
3455 }
3456 } else {
11343788 3457 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3458 /* Use NUL as q''-delimiter. */
3459 sv_catpvs(sv, " split(/,/,q\0");
3460 ++s;
3461 sv_catpvn(sv, s, end - s);
396482e1 3462 sv_catpvs(sv, "\0)");
c07a80fd 3463 }
b64cb68c 3464 s = end;
29a861e7 3465 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3466 }
3467 else
0544e6df 3468 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3469 return s;
79072805 3470 case 'n':
3280af22 3471 PL_minus_n = TRUE;
79072805
LW
3472 s++;
3473 return s;
3474 case 'p':
3280af22 3475 PL_minus_p = TRUE;
79072805
LW
3476 s++;
3477 return s;
3478 case 's':
f20b2998 3479 forbid_setid('s', FALSE);
3280af22 3480 PL_doswitches = TRUE;
79072805
LW
3481 s++;