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perl.[ch]: switch to using SvPVCLEAR() and string constant friendly macros
[perl5.git] / perl.c
CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
LW
2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
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("");
854da30f
YO
298 SvPVCLEAR(PERL_DEBUG_PAD(0)); /* For regex debugging. */
299 SvPVCLEAR(PERL_DEBUG_PAD(1)); /* ext/re needs these */
300 SvPVCLEAR(PERL_DEBUG_PAD(2)); /* even without DEBUGGING. */
1fcf4c12 301#ifdef USE_ITHREADS
402d2eb1
NC
302 /* First entry is a list of empty elements. It needs to be initialised
303 else all hell breaks loose in S_find_uninit_var(). */
304 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 305 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 306 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 307#endif
e5dd39fc 308#ifdef USE_REENTRANT_API
59bd0823 309 Perl_reentrant_init(aTHX);
e5dd39fc 310#endif
7dc86639
YO
311#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
312 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
313 * This MUST be done before any hash stores or fetches take place.
314 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
315 * yourself, it is your responsibility to provide a good random seed!
316 * You can also define PERL_HASH_SEED in compile time, see hv.h.
317 *
318 * XXX: fix this comment */
319 if (PL_hash_seed_set == FALSE) {
320 Perl_get_hash_seed(aTHX_ PL_hash_seed);
321 PL_hash_seed_set= TRUE;
322 }
323#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
324
325 /* Note that strtab is a rather special HV. Assumptions are made
326 about not iterating on it, and not adding tie magic to it.
327 It is properly deallocated in perl_destruct() */
328 PL_strtab = newHV();
329
3d47000e
AB
330 HvSHAREKEYS_off(PL_strtab); /* mandatory */
331 hv_ksplit(PL_strtab, 512);
332
a38ab475
RZ
333 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
334
2f42fcb0
JH
335#ifndef PERL_MICRO
336# ifdef USE_ENVIRON_ARRAY
0631ea03 337 PL_origenviron = environ;
2f42fcb0 338# endif
0631ea03
AB
339#endif
340
5311654c 341 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 342 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
343 * The HZ if not originally defined has been by now
344 * been defined as CLK_TCK, if available. */
b6c36746 345#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
346 PL_clocktick = sysconf(_SC_CLK_TCK);
347 if (PL_clocktick <= 0)
348#endif
349 PL_clocktick = HZ;
350
081fc587
AB
351 PL_stashcache = newHV();
352
e8e3635e 353 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 354
27da23d5
JH
355#ifdef HAS_MMAP
356 if (!PL_mmap_page_size) {
357#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
358 {
359 SETERRNO(0, SS_NORMAL);
360# ifdef _SC_PAGESIZE
361 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
362# else
363 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
364# endif
365 if ((long) PL_mmap_page_size < 0) {
366 if (errno) {
44f8325f 367 SV * const error = ERRSV;
d4c19fe8 368 SvUPGRADE(error, SVt_PV);
0510663f 369 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
370 }
371 else
372 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
373 }
374 }
375#else
376# ifdef HAS_GETPAGESIZE
377 PL_mmap_page_size = getpagesize();
378# else
379# if defined(I_SYS_PARAM) && defined(PAGESIZE)
380 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
381# endif
382# endif
383#endif
384 if (PL_mmap_page_size <= 0)
385 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
386 (IV) PL_mmap_page_size);
387 }
388#endif /* HAS_MMAP */
389
390#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
391 PL_timesbase.tms_utime = 0;
392 PL_timesbase.tms_stime = 0;
393 PL_timesbase.tms_cutime = 0;
394 PL_timesbase.tms_cstime = 0;
395#endif
396
7d113631
NC
397 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
398
a3e6e81e 399 PL_registered_mros = newHV();
9e169432
NC
400 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
401 HvMAX(PL_registered_mros) = 0;
a3e6e81e 402
7b8dd5f4
KW
403 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
404 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
405 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
406 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
407 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
408 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
409 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
410 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
411 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
412 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
413 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
414 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
415 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
416 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
417 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
418 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 419 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
420 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
421 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 422 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
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);
675c73ca
MB
624 if (errno)
625 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
626 Strerror(errno));
8abddda3
TC
627 if (!STATUS_UNIX)
628 STATUS_ALL_FAILURE;
629 }
630 }
631#endif
f13a2bc0 632 my_fflush_all();
e00b64d4 633
75d476e2 634#ifdef PERL_TRACE_OPS
e71f25b3
JC
635 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
636 {
637 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
638 UV uv;
639
640 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
641 || !(uv > 0))
642 goto no_trace_out;
643 }
75d476e2
SM
644 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
645 for (i = 0; i <= OP_max; ++i) {
e71f25b3
JC
646 if (PL_op_exec_cnt[i])
647 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM
648 }
649 /* Utility slot for easily doing little tracing experiments in the runloop: */
650 if (PL_op_exec_cnt[OP_max+1] != 0)
651 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
652 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 653 no_trace_out:
75d476e2
SM
654#endif
655
656
16c91539 657 if (PL_threadhook(aTHX)) {
62375a60 658 /* Threads hook has vetoed further cleanup */
c301d606 659 PL_veto_cleanup = TRUE;
37038d91 660 return STATUS_EXIT;
62375a60
NIS
661 }
662
2aa47728
NC
663#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
664 if (destruct_level != 0) {
665 /* Fork here to create a child. Our child's job is to preserve the
666 state of scalars prior to destruction, so that we can instruct it
667 to dump any scalars that we later find have leaked.
668 There's no subtlety in this code - it assumes POSIX, and it doesn't
669 fail gracefully */
670 int fd[2];
671
672 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
673 perror("Debug leaking scalars socketpair failed");
674 abort();
675 }
676
677 child = fork();
678 if(child == -1) {
679 perror("Debug leaking scalars fork failed");
680 abort();
681 }
682 if (!child) {
683 /* We are the child */
3125a5a4
NC
684 const int sock = fd[1];
685 const int debug_fd = PerlIO_fileno(Perl_debug_log);
686 int f;
808ad2d0
NC
687 const char *where;
688 /* Our success message is an integer 0, and a char 0 */
b61433a9 689 static const char success[sizeof(int) + 1] = {0};
3125a5a4 690
2aa47728 691 close(fd[0]);
2aa47728 692
3125a5a4
NC
693 /* We need to close all other file descriptors otherwise we end up
694 with interesting hangs, where the parent closes its end of a
695 pipe, and sits waiting for (another) child to terminate. Only
696 that child never terminates, because it never gets EOF, because
bf357333
NC
697 we also have the far end of the pipe open. We even need to
698 close the debugging fd, because sometimes it happens to be one
699 end of a pipe, and a process is waiting on the other end for
700 EOF. Normally it would be closed at some point earlier in
701 destruction, but if we happen to cause the pipe to remain open,
702 EOF never occurs, and we get an infinite hang. Hence all the
703 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
704
705 f = sysconf(_SC_OPEN_MAX);
706 if(f < 0) {
808ad2d0
NC
707 where = "sysconf failed";
708 goto abort;
3125a5a4
NC
709 }
710 while (f--) {
711 if (f == sock)
712 continue;
3125a5a4
NC
713 close(f);
714 }
715
2aa47728
NC
716 while (1) {
717 SV *target;
bf357333
NC
718 union control_un control;
719 struct msghdr msg;
720 struct iovec vec[1];
721 struct cmsghdr *cmptr;
722 ssize_t got;
723 int got_fd;
724
725 msg.msg_control = control.control;
726 msg.msg_controllen = sizeof(control.control);
727 /* We're a connected socket so we don't need a source */
728 msg.msg_name = NULL;
729 msg.msg_namelen = 0;
730 msg.msg_iov = vec;
c3caa5c3 731 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
732
733 vec[0].iov_base = (void*)&target;
734 vec[0].iov_len = sizeof(target);
735
736 got = recvmsg(sock, &msg, 0);
2aa47728
NC
737
738 if(got == 0)
739 break;
740 if(got < 0) {
808ad2d0
NC
741 where = "recv failed";
742 goto abort;
2aa47728
NC
743 }
744 if(got < sizeof(target)) {
808ad2d0
NC
745 where = "short recv";
746 goto abort;
2aa47728 747 }
bf357333 748
808ad2d0
NC
749 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
750 where = "no cmsg";
751 goto abort;
752 }
753 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
754 where = "wrong cmsg_len";
755 goto abort;
756 }
757 if(cmptr->cmsg_level != SOL_SOCKET) {
758 where = "wrong cmsg_level";
759 goto abort;
760 }
761 if(cmptr->cmsg_type != SCM_RIGHTS) {
762 where = "wrong cmsg_type";
763 goto abort;
764 }
bf357333
NC
765
766 got_fd = *(int*)CMSG_DATA(cmptr);
767 /* For our last little bit of trickery, put the file descriptor
768 back into Perl_debug_log, as if we never actually closed it
769 */
808ad2d0
NC
770 if(got_fd != debug_fd) {
771 if (dup2(got_fd, debug_fd) == -1) {
772 where = "dup2";
773 goto abort;
774 }
775 }
2aa47728 776 sv_dump(target);
bf357333 777
2aa47728
NC
778 PerlIO_flush(Perl_debug_log);
779
808ad2d0 780 got = write(sock, &success, sizeof(success));
2aa47728
NC
781
782 if(got < 0) {
808ad2d0
NC
783 where = "write failed";
784 goto abort;
2aa47728 785 }
808ad2d0
NC
786 if(got < sizeof(success)) {
787 where = "short write";
788 goto abort;
2aa47728
NC
789 }
790 }
791 _exit(0);
808ad2d0
NC
792 abort:
793 {
794 int send_errno = errno;
795 unsigned char length = (unsigned char) strlen(where);
796 struct iovec failure[3] = {
797 {(void*)&send_errno, sizeof(send_errno)},
798 {&length, 1},
799 {(void*)where, length}
800 };
801 int got = writev(sock, failure, 3);
802 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
803 in the parent if we try to read from the socketpair after the
804 child has exited, even if there was data to read.
805 So sleep a bit to give the parent a fighting chance of
806 reading the data. */
807 sleep(2);
808 _exit((got == -1) ? errno : 0);
809 }
bf357333 810 /* End of child. */
2aa47728 811 }
41e4abd8 812 PL_dumper_fd = fd[0];
2aa47728
NC
813 close(fd[1]);
814 }
815#endif
816
ff0cee69
PP
817 /* We must account for everything. */
818
819 /* Destroy the main CV and syntax tree */
37e77c23
FC
820 /* Set PL_curcop now, because destroying ops can cause new SVs
821 to be generated in Perl_pad_swipe, and when running with
822 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
823 op from which the filename structure member is copied. */
17fbfdf6 824 PL_curcop = &PL_compiling;
3280af22 825 if (PL_main_root) {
4e380990
DM
826 /* ensure comppad/curpad to refer to main's pad */
827 if (CvPADLIST(PL_main_cv)) {
828 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 829 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 830 }
3280af22 831 op_free(PL_main_root);
5f66b61c 832 PL_main_root = NULL;
a0d0e21e 833 }
5f66b61c 834 PL_main_start = NULL;
aac9d523
DM
835 /* note that PL_main_cv isn't usually actually freed at this point,
836 * due to the CvOUTSIDE refs from subs compiled within it. It will
837 * get freed once all the subs are freed in sv_clean_all(), for
838 * destruct_level > 0 */
3280af22 839 SvREFCNT_dec(PL_main_cv);
601f1833 840 PL_main_cv = NULL;
ca7b837b 841 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 842
13621cfb
NIS
843 /* Tell PerlIO we are about to tear things apart in case
844 we have layers which are using resources that should
845 be cleaned up now.
846 */
847
848 PerlIO_destruct(aTHX);
849
ddf23d4a
SM
850 /*
851 * Try to destruct global references. We do this first so that the
852 * destructors and destructees still exist. Some sv's might remain.
853 * Non-referenced objects are on their own.
854 */
855 sv_clean_objs();
8990e307 856
5cd24f17 857 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 858 SvREFCNT_dec(PL_warnhook);
a0714e2c 859 PL_warnhook = NULL;
3280af22 860 SvREFCNT_dec(PL_diehook);
a0714e2c 861 PL_diehook = NULL;
5cd24f17 862
4b556e6c 863 /* call exit list functions */
3280af22 864 while (PL_exitlistlen-- > 0)
acfe0abc 865 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 866
3280af22 867 Safefree(PL_exitlist);
4b556e6c 868
1c4916e5
CB
869 PL_exitlist = NULL;
870 PL_exitlistlen = 0;
871
a3e6e81e
NC
872 SvREFCNT_dec(PL_registered_mros);
873
551a8b83 874 /* jettison our possibly duplicated environment */
4b647fb0
DM
875 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
876 * so we certainly shouldn't free it here
877 */
2f42fcb0 878#ifndef PERL_MICRO
4b647fb0 879#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 880 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
881#ifdef USE_ITHREADS
882 /* only main thread can free environ[0] contents */
883 && PL_curinterp == aTHX
884#endif
885 )
886 {
551a8b83
JH
887 I32 i;
888
889 for (i = 0; environ[i]; i++)
4b420006 890 safesysfree(environ[i]);
0631ea03 891
4b420006
JH
892 /* Must use safesysfree() when working with environ. */
893 safesysfree(environ);
551a8b83
JH
894
895 environ = PL_origenviron;
896 }
897#endif
2f42fcb0 898#endif /* !PERL_MICRO */
551a8b83 899
30985c42
JH
900 if (destruct_level == 0) {
901
902 DEBUG_P(debprofdump());
903
904#if defined(PERLIO_LAYERS)
905 /* No more IO - including error messages ! */
906 PerlIO_cleanup(aTHX);
907#endif
908
909 CopFILE_free(&PL_compiling);
30985c42
JH
910
911 /* The exit() function will do everything that needs doing. */
912 return STATUS_EXIT;
913 }
914
9fa9f06b
KW
915 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
916
5f8cb046
DM
917#ifdef USE_ITHREADS
918 /* the syntax tree is shared between clones
919 * so op_free(PL_main_root) only ReREFCNT_dec's
920 * REGEXPs in the parent interpreter
921 * we need to manually ReREFCNT_dec for the clones
922 */
0547a729
DM
923 {
924 I32 i = AvFILLp(PL_regex_padav);
925 SV **ary = AvARRAY(PL_regex_padav);
926
927 for (; i; i--) {
928 SvREFCNT_dec(ary[i]);
929 ary[i] = &PL_sv_undef;
930 }
931 }
5f8cb046
DM
932#endif
933
0547a729 934
ad64d0ec 935 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
936 PL_stashcache = NULL;
937
5f05dabc
PP
938 /* loosen bonds of global variables */
939
2f9285f8
DM
940 /* XXX can PL_parser still be non-null here? */
941 if(PL_parser && PL_parser->rsfp) {
942 (void)PerlIO_close(PL_parser->rsfp);
943 PL_parser->rsfp = NULL;
8ebc5c01
PP
944 }
945
84386e14
RGS
946 if (PL_minus_F) {
947 Safefree(PL_splitstr);
948 PL_splitstr = NULL;
949 }
950
8ebc5c01 951 /* switches */
3280af22
NIS
952 PL_minus_n = FALSE;
953 PL_minus_p = FALSE;
954 PL_minus_l = FALSE;
955 PL_minus_a = FALSE;
956 PL_minus_F = FALSE;
957 PL_doswitches = FALSE;
599cee73 958 PL_dowarn = G_WARN_OFF;
1a904fc8 959#ifdef PERL_SAWAMPERSAND
d3b97530 960 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 961#endif
3280af22
NIS
962 PL_unsafe = FALSE;
963
964 Safefree(PL_inplace);
bd61b366 965 PL_inplace = NULL;
a7cb1f99 966 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
967
968 if (PL_e_script) {
969 SvREFCNT_dec(PL_e_script);
a0714e2c 970 PL_e_script = NULL;
8ebc5c01
PP
971 }
972
bf9cdc68
RG
973 PL_perldb = 0;
974
8ebc5c01
PP
975 /* magical thingies */
976
e23d9e2f
CS
977 SvREFCNT_dec(PL_ofsgv); /* *, */
978 PL_ofsgv = NULL;
5f05dabc 979
7889fe52 980 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 981 PL_ors_sv = NULL;
8ebc5c01 982
3280af22 983 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 984 PL_rs = NULL;
dc92893f 985
d33b2eba 986 Safefree(PL_osname); /* $^O */
bd61b366 987 PL_osname = NULL;
5f05dabc 988
3280af22 989 SvREFCNT_dec(PL_statname);
a0714e2c
SS
990 PL_statname = NULL;
991 PL_statgv = NULL;
5f05dabc 992
8ebc5c01
PP
993 /* defgv, aka *_ should be taken care of elsewhere */
994
7d5ea4e7
GS
995 /* float buffer */
996 Safefree(PL_efloatbuf);
bd61b366 997 PL_efloatbuf = NULL;
7d5ea4e7
GS
998 PL_efloatsize = 0;
999
8ebc5c01 1000 /* startup and shutdown function lists */
3280af22 1001 SvREFCNT_dec(PL_beginav);
5a837c8f 1002 SvREFCNT_dec(PL_beginav_save);
3280af22 1003 SvREFCNT_dec(PL_endav);
7d30b5c4 1004 SvREFCNT_dec(PL_checkav);
ece599bd 1005 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
1006 SvREFCNT_dec(PL_unitcheckav);
1007 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1008 SvREFCNT_dec(PL_initav);
7d49f689
NC
1009 PL_beginav = NULL;
1010 PL_beginav_save = NULL;
1011 PL_endav = NULL;
1012 PL_checkav = NULL;
1013 PL_checkav_save = NULL;
3c10abe3
AG
1014 PL_unitcheckav = NULL;
1015 PL_unitcheckav_save = NULL;
7d49f689 1016 PL_initav = NULL;
5618dfe8 1017
8ebc5c01 1018 /* shortcuts just get cleared */
a0714e2c
SS
1019 PL_hintgv = NULL;
1020 PL_errgv = NULL;
a0714e2c
SS
1021 PL_argvoutgv = NULL;
1022 PL_stdingv = NULL;
1023 PL_stderrgv = NULL;
1024 PL_last_in_gv = NULL;
a0714e2c
SS
1025 PL_DBsingle = NULL;
1026 PL_DBtrace = NULL;
1027 PL_DBsignal = NULL;
a6d69523
TC
1028 PL_DBsingle_iv = 0;
1029 PL_DBtrace_iv = 0;
1030 PL_DBsignal_iv = 0;
601f1833 1031 PL_DBcv = NULL;
7d49f689 1032 PL_dbargs = NULL;
5c284bb0 1033 PL_debstash = NULL;
8ebc5c01 1034
cf93a474 1035 SvREFCNT_dec(PL_envgv);
f03015cd 1036 SvREFCNT_dec(PL_incgv);
722fa0e9 1037 SvREFCNT_dec(PL_argvgv);
475b1e90 1038 SvREFCNT_dec(PL_replgv);
8cece913
FC
1039 SvREFCNT_dec(PL_DBgv);
1040 SvREFCNT_dec(PL_DBline);
1041 SvREFCNT_dec(PL_DBsub);
cf93a474 1042 PL_envgv = NULL;
f03015cd 1043 PL_incgv = NULL;
722fa0e9 1044 PL_argvgv = NULL;
475b1e90 1045 PL_replgv = NULL;
8cece913
FC
1046 PL_DBgv = NULL;
1047 PL_DBline = NULL;
1048 PL_DBsub = NULL;
1049
7a1c5554 1050 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1051 PL_argvout_stack = NULL;
8ebc5c01 1052
5c831c24 1053 SvREFCNT_dec(PL_modglobal);
5c284bb0 1054 PL_modglobal = NULL;
5c831c24 1055 SvREFCNT_dec(PL_preambleav);
7d49f689 1056 PL_preambleav = NULL;
5c831c24 1057 SvREFCNT_dec(PL_subname);
a0714e2c 1058 PL_subname = NULL;
ca0c25f6 1059#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1060 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1061 PL_pidstatus = NULL;
ca0c25f6 1062#endif
5c831c24 1063 SvREFCNT_dec(PL_toptarget);
a0714e2c 1064 PL_toptarget = NULL;
5c831c24 1065 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1066 PL_bodytarget = NULL;
1067 PL_formtarget = NULL;
5c831c24 1068
d33b2eba 1069 /* free locale stuff */
b9582b6a 1070#ifdef USE_LOCALE_COLLATE
d33b2eba 1071 Safefree(PL_collation_name);
bd61b366 1072 PL_collation_name = NULL;
b9582b6a 1073#endif
d33b2eba 1074
b9582b6a 1075#ifdef USE_LOCALE_NUMERIC
d33b2eba 1076 Safefree(PL_numeric_name);
bd61b366 1077 PL_numeric_name = NULL;
a453c169 1078 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1079 PL_numeric_radix_sv = NULL;
b9582b6a 1080#endif
d33b2eba 1081
9c0b6888
KW
1082 /* clear character classes */
1083 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1084 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1085 PL_utf8_swash_ptrs[i] = NULL;
1086 }
5c831c24
GS
1087 SvREFCNT_dec(PL_utf8_mark);
1088 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1089 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1090 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1091 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1092 SvREFCNT_dec(PL_utf8_idstart);
1093 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1094 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1095 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1096 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1097 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1098 SvREFCNT_dec(PL_UpperLatin1);
1099 SvREFCNT_dec(PL_Latin1);
1100 SvREFCNT_dec(PL_NonL1NonFinalFold);
1101 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1102#ifdef USE_LOCALE_CTYPE
780fcc9f 1103 SvREFCNT_dec(PL_warn_locale);
5b7de470 1104#endif
a0714e2c
SS
1105 PL_utf8_mark = NULL;
1106 PL_utf8_toupper = NULL;
1107 PL_utf8_totitle = NULL;
1108 PL_utf8_tolower = NULL;
1109 PL_utf8_tofold = NULL;
1110 PL_utf8_idstart = NULL;
1111 PL_utf8_idcont = NULL;
2726813d 1112 PL_utf8_foldclosures = NULL;
9fa9f06b 1113 PL_AboveLatin1 = NULL;
e0a1ff7a 1114 PL_InBitmap = NULL;
9fa9f06b 1115 PL_HasMultiCharFold = NULL;
5b7de470 1116#ifdef USE_LOCALE_CTYPE
780fcc9f 1117 PL_warn_locale = NULL;
5b7de470 1118#endif
9fa9f06b
KW
1119 PL_Latin1 = NULL;
1120 PL_NonL1NonFinalFold = NULL;
1121 PL_UpperLatin1 = NULL;
86f72d56 1122 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1123 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1124 PL_XPosix_ptrs[i] = NULL;
86f72d56 1125 }
64935bc6 1126 PL_GCB_invlist = NULL;
6b659339 1127 PL_LB_invlist = NULL;
06ae2722 1128 PL_SB_invlist = NULL;
ae3bb8ea 1129 PL_WB_invlist = NULL;
5c831c24 1130
971a9dd3 1131 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1132 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1133 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1134 cophh_free(CopHINTHASH_get(&PL_compiling));
1135 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1136 CopFILE_free(&PL_compiling);
5c831c24 1137
a0d0e21e 1138 /* Prepare to destruct main symbol table. */
5f05dabc 1139
3280af22 1140 hv = PL_defstash;
ca556bcd 1141 /* break ref loop *:: <=> %:: */
854da30f 1142 (void)hv_deletes(hv, "main::", G_DISCARD);
3280af22 1143 PL_defstash = 0;
a0d0e21e 1144 SvREFCNT_dec(hv);
5c831c24 1145 SvREFCNT_dec(PL_curstname);
a0714e2c 1146 PL_curstname = NULL;
a0d0e21e 1147
5a844595
GS
1148 /* clear queued errors */
1149 SvREFCNT_dec(PL_errors);
a0714e2c 1150 PL_errors = NULL;
5a844595 1151
dd69841b
BB
1152 SvREFCNT_dec(PL_isarev);
1153
a0d0e21e 1154 FREETMPS;
9b387841 1155 if (destruct_level >= 2) {
3280af22 1156 if (PL_scopestack_ix != 0)
9b387841
NC
1157 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1158 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1159 (long)PL_scopestack_ix);
3280af22 1160 if (PL_savestack_ix != 0)
9b387841
NC
1161 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1162 "Unbalanced saves: %ld more saves than restores\n",
1163 (long)PL_savestack_ix);
3280af22 1164 if (PL_tmps_floor != -1)
9b387841
NC
1165 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1166 (long)PL_tmps_floor + 1);
a0d0e21e 1167 if (cxstack_ix != -1)
9b387841
NC
1168 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1169 (long)cxstack_ix + 1);
a0d0e21e 1170 }
8990e307 1171
0547a729
DM
1172#ifdef USE_ITHREADS
1173 SvREFCNT_dec(PL_regex_padav);
1174 PL_regex_padav = NULL;
1175 PL_regex_pad = NULL;
1176#endif
1177
776df701 1178#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1179 /* the entries in this list are allocated via SV PVX's, so get freed
1180 * in sv_clean_all */
1181 Safefree(PL_my_cxt_list);
776df701 1182#endif
57bb2458 1183
8990e307 1184 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1185
1186 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1187 while (sv_clean_all() > 2)
5226ed68
JH
1188 ;
1189
23083432
FC
1190#ifdef USE_ITHREADS
1191 Safefree(PL_stashpad); /* must come after sv_clean_all */
1192#endif
1193
d4777f27
GS
1194 AvREAL_off(PL_fdpid); /* no surviving entries */
1195 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1196 PL_fdpid = NULL;
d33b2eba 1197
6c644e78
GS
1198#ifdef HAVE_INTERP_INTERN
1199 sys_intern_clear();
1200#endif
1201
a38ab475
RZ
1202 /* constant strings */
1203 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1204 SvREFCNT_dec(PL_sv_consts[i]);
1205 PL_sv_consts[i] = NULL;
1206 }
1207
6e72f9df
PP
1208 /* Destruct the global string table. */
1209 {
1210 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1211 * so that sv_free() won't fail on them.
80459961
NC
1212 * Now that the global string table is using a single hunk of memory
1213 * for both HE and HEK, we either need to explicitly unshare it the
1214 * correct way, or actually free things here.
6e72f9df 1215 */
80459961
NC
1216 I32 riter = 0;
1217 const I32 max = HvMAX(PL_strtab);
c4420975 1218 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1219 HE *hent = array[0];
1220
6e72f9df 1221 for (;;) {
0453d815 1222 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1223 HE * const next = HeNEXT(hent);
9014280d 1224 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1225 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1226 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1227 Safefree(hent);
1228 hent = next;
6e72f9df
PP
1229 }
1230 if (!hent) {
1231 if (++riter > max)
1232 break;
1233 hent = array[riter];
1234 }
1235 }
80459961
NC
1236
1237 Safefree(array);
1238 HvARRAY(PL_strtab) = 0;
1239 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1240 }
3280af22 1241 SvREFCNT_dec(PL_strtab);
6e72f9df 1242
e652bb2f 1243#ifdef USE_ITHREADS
c21d1a0f 1244 /* free the pointer tables used for cloning */
a0739874 1245 ptr_table_free(PL_ptr_table);
bf9cdc68 1246 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1247#endif
a0739874 1248
d33b2eba
GS
1249 /* free special SVs */
1250
1251 SvREFCNT(&PL_sv_yes) = 0;
1252 sv_clear(&PL_sv_yes);
1253 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1254 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1255
1256 SvREFCNT(&PL_sv_no) = 0;
1257 sv_clear(&PL_sv_no);
1258 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1259 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1260
9f375a43
DM
1261 {
1262 int i;
1263 for (i=0; i<=2; i++) {
1264 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1265 sv_clear(PERL_DEBUG_PAD(i));
1266 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1267 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1268 }
1269 }
1270
0453d815 1271 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1272 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1273
eba0f806
DM
1274#ifdef DEBUG_LEAKING_SCALARS
1275 if (PL_sv_count != 0) {
1276 SV* sva;
1277 SV* sv;
eb578fdb 1278 SV* svend;
eba0f806 1279
ad64d0ec 1280 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1281 svend = &sva[SvREFCNT(sva)];
1282 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1283 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1284 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1285 " flags=0x%"UVxf
fd0854ff 1286 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1287 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1288 "serial %"UVuf"\n",
574b8821
NC
1289 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1290 pTHX__VALUE,
fd0854ff
DM
1291 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1292 sv->sv_debug_line,
1293 sv->sv_debug_inpad ? "for" : "by",
1294 sv->sv_debug_optype ?
1295 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1296 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1297 sv->sv_debug_serial
fd0854ff 1298 );
2aa47728 1299#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1300 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1301#endif
eba0f806
DM
1302 }
1303 }
1304 }
1305 }
2aa47728
NC
1306#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1307 {
1308 int status;
1309 fd_set rset;
1310 /* Wait for up to 4 seconds for child to terminate.
1311 This seems to be the least effort way of timing out on reaping
1312 its exit status. */
1313 struct timeval waitfor = {4, 0};
41e4abd8 1314 int sock = PL_dumper_fd;
2aa47728
NC
1315
1316 shutdown(sock, 1);
1317 FD_ZERO(&rset);
1318 FD_SET(sock, &rset);
1319 select(sock + 1, &rset, NULL, NULL, &waitfor);
1320 waitpid(child, &status, WNOHANG);
1321 close(sock);
1322 }
1323#endif
eba0f806 1324#endif
77abb4c6
NC
1325#ifdef DEBUG_LEAKING_SCALARS_ABORT
1326 if (PL_sv_count)
1327 abort();
1328#endif
bf9cdc68 1329 PL_sv_count = 0;
eba0f806 1330
56a2bab7 1331#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1332 /* No more IO - including error messages ! */
1333 PerlIO_cleanup(aTHX);
1334#endif
1335
9f4bd222 1336 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1337 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1338 for no arg - and will try and SvREFCNT_dec it.
1339 */
1340 SvREFCNT(&PL_sv_undef) = 0;
1341 SvREADONLY_off(&PL_sv_undef);
1342
3280af22 1343 Safefree(PL_origfilename);
bd61b366 1344 PL_origfilename = NULL;
43c5f42d 1345 Safefree(PL_reg_curpm);
dd28f7bb 1346 free_tied_hv_pool();
3280af22 1347 Safefree(PL_op_mask);
cf36064f 1348 Safefree(PL_psig_name);
bf9cdc68 1349 PL_psig_name = (SV**)NULL;
d525a7b2 1350 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1351 {
1352 /* We need to NULL PL_psig_pend first, so that
1353 signal handlers know not to use it */
1354 int *psig_save = PL_psig_pend;
1355 PL_psig_pend = (int*)NULL;
1356 Safefree(psig_save);
1357 }
6e72f9df 1358 nuke_stacks();
284167a5
SM
1359 TAINTING_set(FALSE);
1360 TAINT_WARN_set(FALSE);
3280af22 1361 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1362
a0d0e21e 1363 DEBUG_P(debprofdump());
d33b2eba 1364
b173165c
FC
1365 PL_debug = 0;
1366
e5dd39fc 1367#ifdef USE_REENTRANT_API
10bc17b6 1368 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1369#endif
1370
a24da70b
NC
1371 /* These all point to HVs that are about to be blown away.
1372 Code in core and on CPAN assumes that if the interpreter is re-started
1373 that they will be cleanly NULL or pointing to a valid HV. */
1374 PL_custom_op_names = NULL;
1375 PL_custom_op_descs = NULL;
1376 PL_custom_ops = NULL;
1377
612f20c3
GS
1378 sv_free_arenas();
1379
5d9a96ca
DM
1380 while (PL_regmatch_slab) {
1381 regmatch_slab *s = PL_regmatch_slab;
1382 PL_regmatch_slab = PL_regmatch_slab->next;
1383 Safefree(s);
1384 }
1385
fc36a67e
PP
1386 /* As the absolutely last thing, free the non-arena SV for mess() */
1387
3280af22 1388 if (PL_mess_sv) {
f350b448
NC
1389 /* we know that type == SVt_PVMG */
1390
9c63abab 1391 /* it could have accumulated taint magic */
f350b448
NC
1392 MAGIC* mg;
1393 MAGIC* moremagic;
1394 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1395 moremagic = mg->mg_moremagic;
1396 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1397 && mg->mg_len >= 0)
1398 Safefree(mg->mg_ptr);
1399 Safefree(mg);
9c63abab 1400 }
f350b448 1401
fc36a67e 1402 /* we know that type >= SVt_PV */
8bd4d4c5 1403 SvPV_free(PL_mess_sv);
3280af22
NIS
1404 Safefree(SvANY(PL_mess_sv));
1405 Safefree(PL_mess_sv);
a0714e2c 1406 PL_mess_sv = NULL;
fc36a67e 1407 }
37038d91 1408 return STATUS_EXIT;
79072805
LW
1409}
1410
954c1994
GS
1411/*
1412=for apidoc perl_free
1413
1414Releases a Perl interpreter. See L<perlembed>.
1415
1416=cut
1417*/
1418
79072805 1419void
0cb96387 1420perl_free(pTHXx)
79072805 1421{
5174512c
NC
1422 dVAR;
1423
7918f24d
NC
1424 PERL_ARGS_ASSERT_PERL_FREE;
1425
c301d606
DM
1426 if (PL_veto_cleanup)
1427 return;
1428
7cb608b5 1429#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1430 {
1431 /*
1432 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1433 * value as we're probably hunting memory leaks then
1434 */
36e77d41 1435 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1436 const U32 old_debug = PL_debug;
55ef9aae
MHM
1437 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1438 thread at thread exit. */
4fd0a9b8
NC
1439 if (DEBUG_m_TEST) {
1440 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1441 "free this thread's memory\n");
1442 PL_debug &= ~ DEBUG_m_FLAG;
1443 }
6edcbed6
DD
1444 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1445 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1446 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1447 safesysfree(ptr);
1448 }
4fd0a9b8 1449 PL_debug = old_debug;
55ef9aae
MHM
1450 }
1451 }
7cb608b5
NC
1452#endif
1453
acfe0abc 1454#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1455# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1456 {
acfe0abc 1457# ifdef NETWARE
7af12a34 1458 void *host = nw_internal_host;
7af12a34 1459 PerlMem_free(aTHXx);
7af12a34 1460 nw_delete_internal_host(host);
acfe0abc 1461# else
bdb50480
NC
1462 void *host = w32_internal_host;
1463 PerlMem_free(aTHXx);
7af12a34 1464 win32_delete_internal_host(host);
acfe0abc 1465# endif
7af12a34 1466 }
1c0ca838
GS
1467# else
1468 PerlMem_free(aTHXx);
1469# endif
acfe0abc
GS
1470#else
1471 PerlMem_free(aTHXx);
76e3520e 1472#endif
79072805
LW
1473}
1474
b7f7fff6 1475#if defined(USE_ITHREADS)
aebd1ac7
GA
1476/* provide destructors to clean up the thread key when libperl is unloaded */
1477#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1478
826955bd 1479#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1480#pragma fini "perl_fini"
666ad1ec
GA
1481#elif defined(__sun) && !defined(__GNUC__)
1482#pragma fini (perl_fini)
aebd1ac7
GA
1483#endif
1484
0dbb1585
AL
1485static void
1486#if defined(__GNUC__)
1487__attribute__((destructor))
aebd1ac7 1488#endif
de009b76 1489perl_fini(void)
aebd1ac7 1490{
27da23d5 1491 dVAR;
5c64bffd
NC
1492 if (
1493#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1494 my_vars &&
1495#endif
1496 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1497 FREE_THREAD_KEY;
1498}
1499
1500#endif /* WIN32 */
1501#endif /* THREADS */
1502
4b556e6c 1503void
864dbfa3 1504Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1505{
3280af22
NIS
1506 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1507 PL_exitlist[PL_exitlistlen].fn = fn;
1508 PL_exitlist[PL_exitlistlen].ptr = ptr;
1509 ++PL_exitlistlen;
4b556e6c
JD
1510}
1511
954c1994
GS
1512/*
1513=for apidoc perl_parse
1514
1515Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1516
1517=cut
1518*/
1519
03d9f026
FC
1520#define SET_CURSTASH(newstash) \
1521 if (PL_curstash != newstash) { \
1522 SvREFCNT_dec(PL_curstash); \
1523 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1524 }
1525
79072805 1526int
0cb96387 1527perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1528{
27da23d5 1529 dVAR;
6224f72b 1530 I32 oldscope;
6224f72b 1531 int ret;
db36c5a1 1532 dJMPENV;
8d063cd8 1533
7918f24d
NC
1534 PERL_ARGS_ASSERT_PERL_PARSE;
1535#ifndef MULTIPLICITY
ed6c66dd 1536 PERL_UNUSED_ARG(my_perl);
7918f24d 1537#endif
7dc86639 1538#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1539 {
7dc86639
YO
1540 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1541
22ff3130 1542 if (s && strEQ(s, "1")) {
25c1b134
TC
1543 const unsigned char *seed= PERL_HASH_SEED;
1544 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1545 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1546 while (seed < seed_end) {
1547 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1548 }
6a5b4183
YO
1549#ifdef PERL_HASH_RANDOMIZE_KEYS
1550 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1551 PL_HASH_RAND_BITS_ENABLED,
1552 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1553#endif
7dc86639
YO
1554 PerlIO_printf(Perl_debug_log, "\n");
1555 }
b0891165
JH
1556 }
1557#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
43238333 1558
ea34f6bd 1559#ifdef __amigaos4__
43238333
AB
1560 {
1561 struct NameTranslationInfo nti;
1562 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1563 }
1564#endif
1565
3280af22 1566 PL_origargc = argc;
e2975953 1567 PL_origargv = argv;
a0d0e21e 1568
a2722ac9
GA
1569 if (PL_origalen != 0) {
1570 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1571 }
1572 else {
3cb9023d
JH
1573 /* Set PL_origalen be the sum of the contiguous argv[]
1574 * elements plus the size of the env in case that it is
e9137a8e 1575 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1576 * as the maximum modifiable length of $0. In the worst case
1577 * the area we are able to modify is limited to the size of
43c32782 1578 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1579 * --jhi */
e1ec3a88 1580 const char *s = NULL;
54bfe034 1581 int i;
b7249aaf 1582 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1583 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1584 const UV aligned =
43c32782
JH
1585 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1586
1587 /* See if all the arguments are contiguous in memory. Note
1588 * that 'contiguous' is a loose term because some platforms
1589 * align the argv[] and the envp[]. If the arguments look
1590 * like non-aligned, assume that they are 'strictly' or
1591 * 'traditionally' contiguous. If the arguments look like
1592 * aligned, we just check that they are within aligned
1593 * PTRSIZE bytes. As long as no system has something bizarre
1594 * like the argv[] interleaved with some other data, we are
1595 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1596 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1597 while (*s) s++;
1598 for (i = 1; i < PL_origargc; i++) {
1599 if ((PL_origargv[i] == s + 1
43c32782 1600#ifdef OS2
c8941eeb 1601 || PL_origargv[i] == s + 2
43c32782 1602#endif
c8941eeb
JH
1603 )
1604 ||
1605 (aligned &&
1606 (PL_origargv[i] > s &&
1607 PL_origargv[i] <=
1608 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1609 )
1610 {
1611 s = PL_origargv[i];
1612 while (*s) s++;
1613 }
1614 else
1615 break;
54bfe034 1616 }
54bfe034 1617 }
a4a109c2
JD
1618
1619#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1620 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1621 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1622 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1623 ||
1624 (aligned &&
1625 (PL_origenviron[0] > s &&
1626 PL_origenviron[0] <=
1627 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1628 )
1629 {
9d419b5f 1630#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1631 s = PL_origenviron[0];
1632 while (*s) s++;
1633#endif
bd61b366 1634 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1635 /* Force copy of environment. */
1636 for (i = 1; PL_origenviron[i]; i++) {
1637 if (PL_origenviron[i] == s + 1
1638 ||
1639 (aligned &&
1640 (PL_origenviron[i] > s &&
1641 PL_origenviron[i] <=
1642 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1643 )
1644 {
1645 s = PL_origenviron[i];
1646 while (*s) s++;
1647 }
1648 else
1649 break;
54bfe034 1650 }
43c32782 1651 }
54bfe034 1652 }
a4a109c2
JD
1653#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1654
2d2af554 1655 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1656 }
1657
3280af22 1658 if (PL_do_undump) {
a0d0e21e
LW
1659
1660 /* Come here if running an undumped a.out. */
1661
3280af22
NIS
1662 PL_origfilename = savepv(argv[0]);
1663 PL_do_undump = FALSE;
a0d0e21e 1664 cxstack_ix = -1; /* start label stack again */
748a9306 1665 init_ids();
284167a5 1666 assert (!TAINT_get);
b7975bdd 1667 TAINT;
e2051532 1668 set_caret_X();
b7975bdd 1669 TAINT_NOT;
a0d0e21e
LW
1670 init_postdump_symbols(argc,argv,env);
1671 return 0;
1672 }
1673
3280af22 1674 if (PL_main_root) {
3280af22 1675 op_free(PL_main_root);
5f66b61c 1676 PL_main_root = NULL;
ff0cee69 1677 }
5f66b61c 1678 PL_main_start = NULL;
3280af22 1679 SvREFCNT_dec(PL_main_cv);
601f1833 1680 PL_main_cv = NULL;
79072805 1681
3280af22
NIS
1682 time(&PL_basetime);
1683 oldscope = PL_scopestack_ix;
599cee73 1684 PL_dowarn = G_WARN_OFF;
f86702cc 1685
14dd3ad8 1686 JMPENV_PUSH(ret);
6224f72b 1687 switch (ret) {
312caa8e 1688 case 0:
14dd3ad8 1689 parse_body(env,xsinit);
9ebf26ad 1690 if (PL_unitcheckav) {
3c10abe3 1691 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1692 }
1693 if (PL_checkav) {
ca7b837b 1694 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1695 call_list(oldscope, PL_checkav);
9ebf26ad 1696 }
14dd3ad8
GS
1697 ret = 0;
1698 break;
6224f72b
GS
1699 case 1:
1700 STATUS_ALL_FAILURE;
924ba076 1701 /* FALLTHROUGH */
6224f72b
GS
1702 case 2:
1703 /* my_exit() was called */
3280af22 1704 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1705 LEAVE;
1706 FREETMPS;
03d9f026 1707 SET_CURSTASH(PL_defstash);
9ebf26ad 1708 if (PL_unitcheckav) {
3c10abe3 1709 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1710 }
1711 if (PL_checkav) {
ca7b837b 1712 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1713 call_list(oldscope, PL_checkav);
9ebf26ad 1714 }
37038d91 1715 ret = STATUS_EXIT;
14dd3ad8 1716 break;
6224f72b 1717 case 3:
bf49b057 1718 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1719 ret = 1;
1720 break;
6224f72b 1721 }
14dd3ad8
GS
1722 JMPENV_POP;
1723 return ret;
1724}
1725
4a5df386
NC
1726/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1727 miniperl, and we need to see those flags reflected in the values here. */
1728
1729/* What this returns is subject to change. Use the public interface in Config.
1730 */
1731static void
1732S_Internals_V(pTHX_ CV *cv)
1733{
1734 dXSARGS;
1735#ifdef LOCAL_PATCH_COUNT
1736 const int local_patch_count = LOCAL_PATCH_COUNT;
1737#else
1738 const int local_patch_count = 0;
1739#endif
2dc296d2 1740 const int entries = 3 + local_patch_count;
4a5df386 1741 int i;
fe1c5936 1742 static const char non_bincompat_options[] =
4a5df386
NC
1743# ifdef DEBUGGING
1744 " DEBUGGING"
1745# endif
1746# ifdef NO_MATHOMS
0d311fbe 1747 " NO_MATHOMS"
4a5df386 1748# endif
59b86f4b
DM
1749# ifdef NO_HASH_SEED
1750 " NO_HASH_SEED"
1751# endif
3b0e4ee2
MB
1752# ifdef NO_TAINT_SUPPORT
1753 " NO_TAINT_SUPPORT"
1754# endif
cb26ef7a
MB
1755# ifdef PERL_BOOL_AS_CHAR
1756 " PERL_BOOL_AS_CHAR"
1757# endif
93c10d60
FC
1758# ifdef PERL_COPY_ON_WRITE
1759 " PERL_COPY_ON_WRITE"
1760# endif
4a5df386
NC
1761# ifdef PERL_DISABLE_PMC
1762 " PERL_DISABLE_PMC"
1763# endif
1764# ifdef PERL_DONT_CREATE_GVSV
1765 " PERL_DONT_CREATE_GVSV"
1766# endif
9a044a43
NC
1767# ifdef PERL_EXTERNAL_GLOB
1768 " PERL_EXTERNAL_GLOB"
1769# endif
59b86f4b
DM
1770# ifdef PERL_HASH_FUNC_SIPHASH
1771 " PERL_HASH_FUNC_SIPHASH"
1772# endif
1773# ifdef PERL_HASH_FUNC_SDBM
1774 " PERL_HASH_FUNC_SDBM"
1775# endif
1776# ifdef PERL_HASH_FUNC_DJB2
1777 " PERL_HASH_FUNC_DJB2"
1778# endif
1779# ifdef PERL_HASH_FUNC_SUPERFAST
1780 " PERL_HASH_FUNC_SUPERFAST"
1781# endif
1782# ifdef PERL_HASH_FUNC_MURMUR3
1783 " PERL_HASH_FUNC_MURMUR3"
1784# endif
1785# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1786 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1787# endif
1788# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1789 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1790# endif
1791# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1792 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1793# endif
4a5df386
NC
1794# ifdef PERL_IS_MINIPERL
1795 " PERL_IS_MINIPERL"
1796# endif
1797# ifdef PERL_MALLOC_WRAP
1798 " PERL_MALLOC_WRAP"
1799# endif
1800# ifdef PERL_MEM_LOG
1801 " PERL_MEM_LOG"
1802# endif
1803# ifdef PERL_MEM_LOG_NOIMPL
1804 " PERL_MEM_LOG_NOIMPL"
1805# endif
4e499636
DM
1806# ifdef PERL_OP_PARENT
1807 " PERL_OP_PARENT"
1808# endif
59b86f4b
DM
1809# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1810 " PERL_PERTURB_KEYS_DETERMINISTIC"
1811# endif
1812# ifdef PERL_PERTURB_KEYS_DISABLED
1813 " PERL_PERTURB_KEYS_DISABLED"
1814# endif
1815# ifdef PERL_PERTURB_KEYS_RANDOM
1816 " PERL_PERTURB_KEYS_RANDOM"
1817# endif
c3cf41ec
NC
1818# ifdef PERL_PRESERVE_IVUV
1819 " PERL_PRESERVE_IVUV"
1820# endif
c051e30b
NC
1821# ifdef PERL_RELOCATABLE_INCPUSH
1822 " PERL_RELOCATABLE_INCPUSH"
1823# endif
4a5df386
NC
1824# ifdef PERL_USE_DEVEL
1825 " PERL_USE_DEVEL"
1826# endif
1827# ifdef PERL_USE_SAFE_PUTENV
1828 " PERL_USE_SAFE_PUTENV"
1829# endif
102b7877
YO
1830# ifdef SILENT_NO_TAINT_SUPPORT
1831 " SILENT_NO_TAINT_SUPPORT"
1832# endif
a3749cf3
NC
1833# ifdef UNLINK_ALL_VERSIONS
1834 " UNLINK_ALL_VERSIONS"
1835# endif
de618ee4
NC
1836# ifdef USE_ATTRIBUTES_FOR_PERLIO
1837 " USE_ATTRIBUTES_FOR_PERLIO"
1838# endif
4a5df386
NC
1839# ifdef USE_FAST_STDIO
1840 " USE_FAST_STDIO"
1841# endif
59b86f4b
DM
1842# ifdef USE_HASH_SEED_EXPLICIT
1843 " USE_HASH_SEED_EXPLICIT"
1844# endif
98548bdf
NC
1845# ifdef USE_LOCALE
1846 " USE_LOCALE"
1847# endif
98548bdf
NC
1848# ifdef USE_LOCALE_CTYPE
1849 " USE_LOCALE_CTYPE"
1850# endif
6937817d
DD
1851# ifdef WIN32_NO_REGISTRY
1852 " USE_NO_REGISTRY"
1853# endif
5a8d8935
NC
1854# ifdef USE_PERL_ATOF
1855 " USE_PERL_ATOF"
1856# endif
0d311fbe
NC
1857# ifdef USE_SITECUSTOMIZE
1858 " USE_SITECUSTOMIZE"
1859# endif
4a5df386
NC
1860 ;
1861 PERL_UNUSED_ARG(cv);
d3db1514 1862 PERL_UNUSED_VAR(items);
4a5df386
NC
1863
1864 EXTEND(SP, entries);
1865
1866 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1867 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1868 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1869
6baa8dbd
NT
1870#ifndef PERL_BUILD_DATE
1871# ifdef __DATE__
1872# ifdef __TIME__
1873# define PERL_BUILD_DATE __DATE__ " " __TIME__
1874# else
1875# define PERL_BUILD_DATE __DATE__
1876# endif
1877# endif
1878#endif
1879
1880#ifdef PERL_BUILD_DATE
4a5df386 1881 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1882 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1883 SVs_TEMP));
4a5df386
NC
1884#else
1885 PUSHs(&PL_sv_undef);
1886#endif
1887
4a5df386
NC
1888 for (i = 1; i <= local_patch_count; i++) {
1889 /* This will be an undef, if PL_localpatches[i] is NULL. */
1890 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1891 }
1892
1893 XSRETURN(entries);
1894}
1895
be71fc8f
NC
1896#define INCPUSH_UNSHIFT 0x01
1897#define INCPUSH_ADD_OLD_VERS 0x02
1898#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1899#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1900#define INCPUSH_NOT_BASEDIR 0x10
1901#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1902#define INCPUSH_ADD_SUB_DIRS \
1903 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1904
312caa8e 1905STATIC void *
14dd3ad8 1906S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1907{
27da23d5 1908 dVAR;
2f9285f8 1909 PerlIO *rsfp;
312caa8e 1910 int argc = PL_origargc;
8f42b153 1911 char **argv = PL_origargv;
e1ec3a88 1912 const char *scriptname = NULL;
402582ca 1913 bool dosearch = FALSE;
eb578fdb 1914 char c;
737c24fc 1915 bool doextract = FALSE;
bd61b366 1916 const char *cddir = NULL;
ab019eaa 1917#ifdef USE_SITECUSTOMIZE
20ef40cf 1918 bool minus_f = FALSE;
ab019eaa 1919#endif
95670bde 1920 SV *linestr_sv = NULL;
5486870f 1921 bool add_read_e_script = FALSE;
87606032 1922 U32 lex_start_flags = 0;
009d90df 1923
ca7b837b 1924 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1925
6224f72b 1926 init_main_stash();
54310121 1927
c7030b81
NC
1928 {
1929 const char *s;
6224f72b
GS
1930 for (argc--,argv++; argc > 0; argc--,argv++) {
1931 if (argv[0][0] != '-' || !argv[0][1])
1932 break;
6224f72b
GS
1933 s = argv[0]+1;
1934 reswitch:
47f56822 1935 switch ((c = *s)) {
729a02f2 1936 case 'C':
1d5472a9
GS
1937#ifndef PERL_STRICT_CR
1938 case '\r':
1939#endif
6224f72b
GS
1940 case ' ':
1941 case '0':
1942 case 'F':
1943 case 'a':
1944 case 'c':
1945 case 'd':
1946 case 'D':
1947 case 'h':
1948 case 'i':
1949 case 'l':
1950 case 'M':
1951 case 'm':
1952 case 'n':
1953 case 'p':
1954 case 's':
1955 case 'u':
1956 case 'U':
1957 case 'v':
599cee73
PM
1958 case 'W':
1959 case 'X':
6224f72b 1960 case 'w':
97bd5664 1961 if ((s = moreswitches(s)))
6224f72b
GS
1962 goto reswitch;
1963 break;
33b78306 1964
1dbad523 1965 case 't':
dc6d7f5c 1966#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1967 /* silently ignore */
dc6d7f5c 1968#elif defined(NO_TAINT_SUPPORT)
3231f579 1969 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1970 "Cowardly refusing to run with -t or -T flags");
1971#else
22f7c9c9 1972 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1973 if( !TAINTING_get ) {
1974 TAINT_WARN_set(TRUE);
1975 TAINTING_set(TRUE);
317ea90d 1976 }
284167a5 1977#endif
317ea90d
MS
1978 s++;
1979 goto reswitch;
6224f72b 1980 case 'T':
dc6d7f5c 1981#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1982 /* silently ignore */
dc6d7f5c 1983#elif defined(NO_TAINT_SUPPORT)
3231f579 1984 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1985 "Cowardly refusing to run with -t or -T flags");
1986#else
22f7c9c9 1987 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1988 TAINTING_set(TRUE);
1989 TAINT_WARN_set(FALSE);
1990#endif
6224f72b
GS
1991 s++;
1992 goto reswitch;
f86702cc 1993
bc9b29db
RH
1994 case 'E':
1995 PL_minus_E = TRUE;
924ba076 1996 /* FALLTHROUGH */
6224f72b 1997 case 'e':
f20b2998 1998 forbid_setid('e', FALSE);
3280af22 1999 if (!PL_e_script) {
396482e1 2000 PL_e_script = newSVpvs("");
5486870f 2001 add_read_e_script = TRUE;
6224f72b
GS
2002 }
2003 if (*++s)
3280af22 2004 sv_catpv(PL_e_script, s);
6224f72b 2005 else if (argv[1]) {
3280af22 2006 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
2007 argc--,argv++;
2008 }
2009 else
47f56822 2010 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2011 sv_catpvs(PL_e_script, "\n");
6224f72b 2012 break;
afe37c7d 2013
20ef40cf 2014 case 'f':
f5542d3a 2015#ifdef USE_SITECUSTOMIZE
20ef40cf 2016 minus_f = TRUE;
f5542d3a 2017#endif
20ef40cf
GA
2018 s++;
2019 goto reswitch;
2020
6224f72b 2021 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2022 forbid_setid('I', FALSE);
bd61b366 2023 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
2024 argc--,argv++;
2025 }
6224f72b 2026 if (s && *s) {
0df16ed7 2027 STRLEN len = strlen(s);
55b4bc1c 2028 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
2029 }
2030 else
a67e862a 2031 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2032 break;
6224f72b 2033 case 'S':
f20b2998 2034 forbid_setid('S', FALSE);
6224f72b
GS
2035 dosearch = TRUE;
2036 s++;
2037 goto reswitch;
2038 case 'V':
7edfd0ef
NC
2039 {
2040 SV *opts_prog;
2041
7edfd0ef 2042 if (*++s != ':') {
37ca4a5b 2043 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2044 }
2045 else {
2046 ++s;
2047 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2048 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2049 0, s, 0);
2050 s += strlen(s);
2051 }
37ca4a5b 2052 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2053 /* don't look for script or read stdin */
2054 scriptname = BIT_BUCKET;
2055 goto reswitch;
6224f72b 2056 }
6224f72b 2057 case 'x':
737c24fc 2058 doextract = TRUE;
6224f72b 2059 s++;
304334da 2060 if (*s)
f4c556ac 2061 cddir = s;
6224f72b
GS
2062 break;
2063 case 0:
2064 break;
2065 case '-':
2066 if (!*++s || isSPACE(*s)) {
2067 argc--,argv++;
2068 goto switch_end;
2069 }
ee8bc8b7
NC
2070 /* catch use of gnu style long options.
2071 Both of these exit immediately. */
2072 if (strEQ(s, "version"))
2073 minus_v();
2074 if (strEQ(s, "help"))
2075 usage();
6224f72b 2076 s--;
924ba076 2077 /* FALLTHROUGH */
6224f72b 2078 default:
cea2e8a9 2079 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2080 }
2081 }
c7030b81
NC
2082 }
2083
6224f72b 2084 switch_end:
54310121 2085
c7030b81
NC
2086 {
2087 char *s;
2088
f675dbe5
CB
2089 if (
2090#ifndef SECURE_INTERNAL_GETENV
284167a5 2091 !TAINTING_get &&
f675dbe5 2092#endif
cf756827 2093 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2094 {
9e0b0d62
KW
2095 /* s points to static memory in getenv(), which may be overwritten at
2096 * any time; use a mortal copy instead */
2097 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2098
74288ac8
GS
2099 while (isSPACE(*s))
2100 s++;
317ea90d 2101 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2102#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2103 /* silently ignore */
dc6d7f5c 2104#elif defined(NO_TAINT_SUPPORT)
3231f579 2105 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2106 "Cowardly refusing to run with -t or -T flags");
2107#else
22f7c9c9 2108 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2109 TAINTING_set(TRUE);
2110 TAINT_WARN_set(FALSE);
2111#endif
317ea90d 2112 }
74288ac8 2113 else {
bd61b366 2114 char *popt_copy = NULL;
74288ac8 2115 while (s && *s) {
54913509 2116 const char *d;
74288ac8
GS
2117 while (isSPACE(*s))
2118 s++;
2119 if (*s == '-') {
2120 s++;
2121 if (isSPACE(*s))
2122 continue;
2123 }
4ea8f8fb 2124 d = s;
74288ac8
GS
2125 if (!*s)
2126 break;
2b622f1a 2127 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2128 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2129 while (++s && *s) {
2130 if (isSPACE(*s)) {
cf756827 2131 if (!popt_copy) {
bfa6c418
NC
2132 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2133 s = popt_copy + (s - d);
2134 d = popt_copy;
cf756827 2135 }
4ea8f8fb
MS
2136 *s++ = '\0';
2137 break;
2138 }
2139 }
1c4db469 2140 if (*d == 't') {
dc6d7f5c 2141#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2142 /* silently ignore */
dc6d7f5c 2143#elif defined(NO_TAINT_SUPPORT)
3231f579 2144 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2145 "Cowardly refusing to run with -t or -T flags");
2146#else
2147 if( !TAINTING_get) {
2148 TAINT_WARN_set(TRUE);
2149 TAINTING_set(TRUE);
317ea90d 2150 }
284167a5 2151#endif
1c4db469 2152 } else {
97bd5664 2153 moreswitches(d);
1c4db469 2154 }
6224f72b 2155 }
6224f72b
GS
2156 }
2157 }
c7030b81 2158 }
a0d0e21e 2159
c29067d7
CH
2160 /* Set $^X early so that it can be used for relocatable paths in @INC */
2161 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2162 assert (!TAINT_get);
c29067d7 2163 TAINT;
e2051532 2164 set_caret_X();
c29067d7
CH
2165 TAINT_NOT;
2166
43c0c913 2167#if defined(USE_SITECUSTOMIZE)
20ef40cf 2168 if (!minus_f) {
43c0c913 2169 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2170 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2171 ie a q() operator with a NUL byte as a the delimiter. This avoids
2172 problems with pathnames containing (say) ' */
43c0c913
NC
2173# ifdef PERL_IS_MINIPERL
2174 AV *const inc = GvAV(PL_incgv);
2175 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2176
2177 if (inc0) {
15870c5c
NC
2178 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2179 it should be reported immediately as a build failure. */
43c0c913
NC
2180 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2181 Perl_newSVpvf(aTHX_
5de87db5 2182 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2183 "do {local $!; -f $f }"
2184 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2185 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2186 }
2187# else
2188 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2189 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2190 if (raw_sitelib) {
2191 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2192 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2193 INCPUSH_CAN_RELOCATE);
2194 const char *const sitelib = SvPVX(sitelib_sv);
2195 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2196 Perl_newSVpvf(aTHX_
2197 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2198 0, SVfARG(sitelib), 0,
2199 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2200 assert (SvREFCNT(sitelib_sv) == 1);
2201 SvREFCNT_dec(sitelib_sv);
2202 }
43c0c913 2203# endif
20ef40cf
GA
2204 }
2205#endif
2206
6224f72b
GS
2207 if (!scriptname)
2208 scriptname = argv[0];
3280af22 2209 if (PL_e_script) {
6224f72b
GS
2210 argc++,argv--;
2211 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2212 }
bd61b366 2213 else if (scriptname == NULL) {
6224f72b
GS
2214#ifdef MSDOS
2215 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2216 moreswitches("h");
6224f72b
GS
2217#endif
2218 scriptname = "-";
2219 }
2220
284167a5 2221 assert (!TAINT_get);
2cace6ac 2222 init_perllib();
6224f72b 2223
a52eba0e 2224 {
f20b2998 2225 bool suidscript = FALSE;
829372d3 2226
8d113837 2227 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2228 if (!rsfp) {
2229 rsfp = PerlIO_stdin();
87606032 2230 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2231 }
6224f72b 2232
b24bc095 2233 validate_suid(rsfp);
6224f72b 2234
64ca3a65 2235#ifndef PERL_MICRO
a52eba0e
NC
2236# if defined(SIGCHLD) || defined(SIGCLD)
2237 {
2238# ifndef SIGCHLD
2239# define SIGCHLD SIGCLD
2240# endif
2241 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2242 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2243 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2244 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2245 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2246 }
0b5b802d 2247 }
a52eba0e 2248# endif
64ca3a65 2249#endif
0b5b802d 2250
737c24fc 2251 if (doextract) {
faef540c 2252
f20b2998 2253 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2254 setuid scripts. */
2255 forbid_setid('x', suidscript);
f20b2998 2256 /* Hence you can't get here if suidscript is true */
faef540c 2257
95670bde
NC
2258 linestr_sv = newSV_type(SVt_PV);
2259 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2260 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2261 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2262 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2263 }
f4c556ac 2264 }
6224f72b 2265
ea726b52 2266 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2267 CvUNIQUE_on(PL_compcv);
2268
eacbb379 2269 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2270
dd69841b
BB
2271 PL_isarev = newHV();
2272
0c4f7ff0 2273 boot_core_PerlIO();
6224f72b 2274 boot_core_UNIVERSAL();
e1a479c5 2275 boot_core_mro();
4a5df386 2276 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2277
2278 if (xsinit)
acfe0abc 2279 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2280#ifndef PERL_MICRO
739a0b84 2281#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2282 init_os_extras();
6224f72b 2283#endif
64ca3a65 2284#endif
6224f72b 2285
29209bc5 2286#ifdef USE_SOCKS
1b9c9cf5
DH
2287# ifdef HAS_SOCKS5_INIT
2288 socks5_init(argv[0]);
2289# else
29209bc5 2290 SOCKSinit(argv[0]);
1b9c9cf5 2291# endif
ac27b0f5 2292#endif
29209bc5 2293
6224f72b
GS
2294 init_predump_symbols();
2295 /* init_postdump_symbols not currently designed to be called */
2296 /* more than once (ENV isn't cleared first, for example) */
2297 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2298 if (!PL_do_undump)
6224f72b
GS
2299 init_postdump_symbols(argc,argv,env);
2300
27da23d5
JH
2301 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2302 * or explicitly in some platforms.
73e1bd1a 2303 * PL_utf8locale is conditionally turned on by
085a54d9 2304 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2305 * look like the user wants to use UTF-8. */
a0fd4948 2306#if defined(__SYMBIAN32__)
27da23d5
JH
2307 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2308#endif
e27b5b51 2309# ifndef PERL_IS_MINIPERL
06e66572
JH
2310 if (PL_unicode) {
2311 /* Requires init_predump_symbols(). */
a05d7ebb 2312 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2313 IO* io;
2314 PerlIO* fp;
2315 SV* sv;
2316
a05d7ebb 2317 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2318 * and the default open disciplines. */
a05d7ebb
JH
2319 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2320 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2321 (fp = IoIFP(io)))
2322 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2323 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2324 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2325 (fp = IoOFP(io)))
2326 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2327 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2328 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2329 (fp = IoOFP(io)))
2330 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2331 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2332 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2333 SVt_PV)))) {
a05d7ebb
JH
2334 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2335 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2336 if (in) {
2337 if (out)
76f68e9b 2338 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2339 else
76f68e9b 2340 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2341 }
2342 else if (out)
76f68e9b 2343 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2344 SvSETMAGIC(sv);
2345 }
b310b053
JH
2346 }
2347 }
e27b5b51 2348#endif
b310b053 2349
c7030b81
NC
2350 {
2351 const char *s;
4ffa73a3
JH
2352 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2353 if (strEQ(s, "unsafe"))
2354 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2355 else if (strEQ(s, "safe"))
2356 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2357 else
2358 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2359 }
c7030b81 2360 }
4ffa73a3 2361
81d86705 2362
87606032 2363 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2364 SvREFCNT_dec(linestr_sv);
95670bde 2365
219f7226 2366 PL_subname = newSVpvs("main");
6224f72b 2367
5486870f
DM
2368 if (add_read_e_script)
2369 filter_add(read_e_script, NULL);
2370
6224f72b
GS
2371 /* now parse the script */
2372
93189314 2373 SETERRNO(0,SS_NORMAL);
28ac2b49 2374 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2375 if (PL_minus_c)
cea2e8a9 2376 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2377 else {
cea2e8a9 2378 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2379 PL_origfilename);
6224f72b
GS
2380 }
2381 }
57843af0 2382 CopLINE_set(PL_curcop, 0);
03d9f026 2383 SET_CURSTASH(PL_defstash);
3280af22
NIS
2384 if (PL_e_script) {
2385 SvREFCNT_dec(PL_e_script);
a0714e2c 2386 PL_e_script = NULL;
6224f72b
GS
2387 }
2388
3280af22 2389 if (PL_do_undump)
6224f72b
GS
2390 my_unexec();
2391
57843af0
GS
2392 if (isWARN_ONCE) {
2393 SAVECOPFILE(PL_curcop);
2394 SAVECOPLINE(PL_curcop);
3280af22 2395 gv_check(PL_defstash);
57843af0 2396 }
6224f72b
GS
2397
2398 LEAVE;
2399 FREETMPS;
2400
2401#ifdef MYMALLOC
f6a607bc
RGS
2402 {
2403 const char *s;
22ff3130
HS
2404 UV uv;
2405 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2406 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2407 dump_mstats("after compilation:");
f6a607bc 2408 }
6224f72b
GS
2409#endif
2410
2411 ENTER;
febb3a6d 2412 PL_restartjmpenv = NULL;
3280af22 2413 PL_restartop = 0;
312caa8e 2414 return NULL;
6224f72b
GS
2415}
2416
954c1994
GS
2417/*
2418=for apidoc perl_run
2419
2420Tells a Perl interpreter to run. See L<perlembed>.
2421
2422=cut
2423*/
2424
6224f72b 2425int
0cb96387 2426perl_run(pTHXx)
6224f72b 2427{
6224f72b 2428 I32 oldscope;
14dd3ad8 2429 int ret = 0;
db36c5a1 2430 dJMPENV;
6224f72b 2431
7918f24d
NC
2432 PERL_ARGS_ASSERT_PERL_RUN;
2433#ifndef MULTIPLICITY
ed6c66dd 2434 PERL_UNUSED_ARG(my_perl);
7918f24d 2435#endif
9d4ba2ae 2436
3280af22 2437 oldscope = PL_scopestack_ix;
96e176bf
CL
2438#ifdef VMS
2439 VMSISH_HUSHED = 0;
2440#endif
6224f72b 2441
14dd3ad8 2442 JMPENV_PUSH(ret);
6224f72b
GS
2443 switch (ret) {
2444 case 1:
2445 cxstack_ix = -1; /* start context stack again */
312caa8e 2446 goto redo_body;
14dd3ad8 2447 case 0: /* normal completion */
14dd3ad8
GS
2448 redo_body:
2449 run_body(oldscope);
924ba076 2450 /* FALLTHROUGH */
14dd3ad8 2451 case 2: /* my_exit() */
3280af22 2452 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2453 LEAVE;
2454 FREETMPS;
03d9f026 2455 SET_CURSTASH(PL_defstash);
3a1ee7e8 2456 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2457 PL_endav && !PL_minus_c) {
ca7b837b 2458 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2459 call_list(oldscope, PL_endav);
9ebf26ad 2460 }
6224f72b
GS
2461#ifdef MYMALLOC
2462 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2463 dump_mstats("after execution: ");
2464#endif
37038d91 2465 ret = STATUS_EXIT;
14dd3ad8 2466 break;
6224f72b 2467 case 3:
312caa8e
CS
2468 if (PL_restartop) {
2469 POPSTACK_TO(PL_mainstack);
2470 goto redo_body;
6224f72b 2471 }
5637ef5b 2472 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2473 FREETMPS;
14dd3ad8
GS
2474 ret = 1;
2475 break;
6224f72b
GS
2476 }
2477
14dd3ad8
GS
2478 JMPENV_POP;
2479 return ret;
312caa8e
CS
2480}
2481
dd374669 2482STATIC void
14dd3ad8
GS
2483S_run_body(pTHX_ I32 oldscope)
2484{
d3b97530
DM
2485 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2486 PL_sawampersand ? "Enabling" : "Omitting",
2487 (unsigned int)(PL_sawampersand)));
6224f72b 2488
3280af22 2489 if (!PL_restartop) {
cf2782cd 2490#ifdef DEBUGGING
f0e3f042
CS
2491 if (DEBUG_x_TEST || DEBUG_B_TEST)
2492 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2493 if (!DEBUG_q_TEST)
2494 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2495#endif
6224f72b 2496
3280af22 2497 if (PL_minus_c) {
bf49b057 2498 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2499 my_exit(0);
2500 }
3280af22 2501 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2502 PL_DBsingle_iv = 1;
9ebf26ad 2503 if (PL_initav) {
ca7b837b 2504 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2505 call_list(oldscope, PL_initav);
9ebf26ad 2506 }
f1fac472 2507#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2508 if (PL_main_root && PL_main_root->op_slabbed)
2509 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2510#endif
6224f72b
GS
2511 }
2512
2513 /* do it */
2514
ca7b837b 2515 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2516
3280af22 2517 if (PL_restartop) {
febb3a6d 2518 PL_restartjmpenv = NULL;
533c011a 2519 PL_op = PL_restartop;
3280af22 2520 PL_restartop = 0;
cea2e8a9 2521 CALLRUNOPS(aTHX);
6224f72b 2522 }
3280af22
NIS
2523 else if (PL_main_start) {
2524 CvDEPTH(PL_main_cv) = 1;
533c011a 2525 PL_op = PL_main_start;
cea2e8a9 2526 CALLRUNOPS(aTHX);
6224f72b 2527 }
f6b3007c 2528 my_exit(0);
e5964223 2529 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2530}
2531
954c1994 2532/*
ccfc67b7
JH
2533=head1 SV Manipulation Functions
2534
954c1994
GS
2535=for apidoc p||get_sv
2536
64ace3f8 2537Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2538C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2539Perl variable does not exist then it will be created. If C<flags> is zero
2540and the variable does not exist then NULL is returned.
954c1994
GS
2541
2542=cut
2543*/
2544
6224f72b 2545SV*
64ace3f8 2546Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2547{
2548 GV *gv;
7918f24d
NC
2549
2550 PERL_ARGS_ASSERT_GET_SV;
2551
64ace3f8 2552 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2553 if (gv)
2554 return GvSV(gv);
a0714e2c 2555 return NULL;
6224f72b
GS
2556}
2557
954c1994 2558/*
ccfc67b7
JH
2559=head1 Array Manipulation Functions
2560
954c1994
GS
2561=for apidoc p||get_av
2562
f0b90de1
SF
2563Returns the AV of the specified Perl global or package array with the given
2564name (so it won't work on lexical variables). C<flags> are passed
72d33970 2565to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2566Perl variable does not exist then it will be created. If C<flags> is zero
2567and the variable does not exist then NULL is returned.
954c1994 2568
f0b90de1
SF
2569Perl equivalent: C<@{"$name"}>.
2570
954c1994
GS
2571=cut
2572*/
2573
6224f72b 2574AV*
cbfd0a87 2575Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2576{
cbfd0a87 2577 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2578
2579 PERL_ARGS_ASSERT_GET_AV;
2580
cbfd0a87 2581 if (flags)
6224f72b
GS
2582 return GvAVn(gv);
2583 if (gv)
2584 return GvAV(gv);
7d49f689 2585 return NULL;
6224f72b
GS
2586}
2587
954c1994 2588/*
ccfc67b7
JH
2589=head1 Hash Manipulation Functions
2590
954c1994
GS
2591=for apidoc p||get_hv
2592
6673a63c 2593Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2594C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2595Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2596and the variable does not exist then C<NULL> is returned.
954c1994
GS
2597
2598=cut
2599*/
2600
6224f72b 2601HV*
6673a63c 2602Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2603{
6673a63c 2604 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2605
2606 PERL_ARGS_ASSERT_GET_HV;
2607
6673a63c 2608 if (flags)
a0d0e21e
LW
2609 return GvHVn(gv);
2610 if (gv)
2611 return GvHV(gv);
5c284bb0 2612 return NULL;
a0d0e21e
LW
2613}
2614
954c1994 2615/*
ccfc67b7
JH
2616=head1 CV Manipulation Functions
2617
780a5241
NC
2618=for apidoc p||get_cvn_flags
2619
2620Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2621C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2622exist then it will be declared (which has the same effect as saying
2623C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2624then NULL is returned.
2625
954c1994
GS
2626=for apidoc p||get_cv
2627
780a5241 2628Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2629
2630=cut
2631*/
2632
a0d0e21e 2633CV*
780a5241 2634Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2635{
780a5241 2636 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2637
2638 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2639
334dda80
FC
2640 /* XXX this is probably not what they think they're getting.
2641 * It has the same effect as "sub name;", i.e. just a forward
2642 * declaration! */
780a5241 2643 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2644 return newSTUB(gv,0);
780a5241 2645 }
a0d0e21e 2646 if (gv)
8ebc5c01 2647 return GvCVu(gv);
601f1833 2648 return NULL;
a0d0e21e
LW
2649}
2650
2c67934f
NC
2651/* Nothing in core calls this now, but we can't replace it with a macro and
2652 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2653CV*
2654Perl_get_cv(pTHX_ const char *name, I32 flags)
2655{
7918f24d
NC
2656 PERL_ARGS_ASSERT_GET_CV;
2657
780a5241
NC
2658 return get_cvn_flags(name, strlen(name), flags);
2659}
2660
79072805
LW
2661/* Be sure to refetch the stack pointer after calling these routines. */
2662
954c1994 2663/*
ccfc67b7
JH
2664
2665=head1 Callback Functions
2666
954c1994
GS
2667=for apidoc p||call_argv
2668
f0b90de1 2669Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2670with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2671L<perlcall>.
f0b90de1
SF
2672
2673Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2674
2675=cut
2676*/
2677
a0d0e21e 2678I32
5aaab254 2679Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2680
8ac85365
NIS
2681 /* See G_* flags in cop.h */
2682 /* null terminated arg list */
8990e307 2683{
a0d0e21e 2684 dSP;
8990e307 2685
7918f24d
NC
2686 PERL_ARGS_ASSERT_CALL_ARGV;
2687
924508f0 2688 PUSHMARK(SP);
3dc78631
DM
2689 while (*argv) {
2690 mXPUSHs(newSVpv(*argv,0));
2691 argv++;
8990e307 2692 }
3dc78631 2693 PUTBACK;
864dbfa3 2694 return call_pv(sub_name, flags);
8990e307
LW
2695}
2696
954c1994
GS
2697/*
2698=for apidoc p||call_pv
2699
2700Performs a callback to the specified Perl sub. See L<perlcall>.
2701
2702=cut
2703*/
2704
a0d0e21e 2705I32
864dbfa3 2706Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2707 /* name of the subroutine */
2708 /* See G_* flags in cop.h */
a0d0e21e 2709{
7918f24d
NC
2710 PERL_ARGS_ASSERT_CALL_PV;
2711
0da0e728 2712 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2713}
2714
954c1994
GS
2715/*
2716=for apidoc p||call_method
2717
2718Performs a callback to the specified Perl method. The blessed object must
2719be on the stack. See L<perlcall>.
2720
2721=cut
2722*/
2723
a0d0e21e 2724I32
864dbfa3 2725Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2726 /* name of the subroutine */
2727 /* See G_* flags in cop.h */
a0d0e21e 2728{
46ca9bac 2729 STRLEN len;
c106c2be 2730 SV* sv;
7918f24d
NC
2731 PERL_ARGS_ASSERT_CALL_METHOD;
2732
46ca9bac 2733 len = strlen(methname);
c106c2be
RZ
2734 sv = flags & G_METHOD_NAMED
2735 ? sv_2mortal(newSVpvn_share(methname, len,0))
2736 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2737
c106c2be 2738 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2739}
2740
2741/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2742/*
2743=for apidoc p||call_sv
2744
078e2213
TC
2745Performs a callback to the Perl sub specified by the SV.
2746
7c0c544c 2747If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2748SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2749or C<SvPV(sv)> will be used as the name of the sub to call.
2750
2751If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2752C<SvPV(sv)> will be used as the name of the method to call.
2753
2754If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2755the name of the method to call.
2756
2757Some other values are treated specially for internal use and should
2758not be depended on.
2759
2760See L<perlcall>.
954c1994
GS
2761
2762=cut
2763*/
2764
a0d0e21e 2765I32
001d637e 2766Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2767 /* See G_* flags in cop.h */
a0d0e21e 2768{
5b434c73 2769 dVAR;
a0d0e21e 2770 LOGOP myop; /* fake syntax tree node */
b46e009d 2771 METHOP method_op;
aa689395 2772 I32 oldmark;
8ea43dc8 2773 VOL I32 retval = 0;
54310121 2774 bool oldcatch = CATCH_GET;
6224f72b 2775 int ret;
c4420975 2776 OP* const oldop = PL_op;
db36c5a1 2777 dJMPENV;
1e422769 2778
7918f24d
NC
2779 PERL_ARGS_ASSERT_CALL_SV;
2780
a0d0e21e
LW
2781 if (flags & G_DISCARD) {
2782 ENTER;
2783 SAVETMPS;
2784 }
2f8edad0
NC
2785 if (!(flags & G_WANT)) {
2786 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2787 */
2788 flags |= G_SCALAR;
2789 }
a0d0e21e 2790
aa689395 2791 Zero(&myop, 1, LOGOP);
f51d4af5 2792 if (!(flags & G_NOARGS))
aa689395 2793 myop.op_flags |= OPf_STACKED;
4f911530 2794 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2795 SAVEOP();
533c011a 2796 PL_op = (OP*)&myop;
aa689395 2797
8c9009ad 2798 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2799 dSP;
2800 EXTEND(SP, 1);
8c9009ad
DD
2801 PUSHs(sv);
2802 PUTBACK;
5b434c73 2803 }
aa689395 2804 oldmark = TOPMARK;
a0d0e21e 2805
3280af22 2806 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2807 /* Handle first BEGIN of -d. */
3280af22 2808 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2809 /* Try harder, since this may have been a sighandler, thus
2810 * curstash may be meaningless. */
ea726b52 2811 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2812 && !(flags & G_NODEBUG))
5ff48db8 2813 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2814
c106c2be 2815 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2816 Zero(&method_op, 1, METHOP);
2817 method_op.op_next = (OP*)&myop;
2818 PL_op = (OP*)&method_op;
c106c2be 2819 if ( flags & G_METHOD_NAMED ) {
b46e009d 2820 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2821 method_op.op_type = OP_METHOD_NAMED;
2822 method_op.op_u.op_meth_sv = sv;
c106c2be 2823 } else {
b46e009d 2824 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2825 method_op.op_type = OP_METHOD;
c106c2be
RZ
2826 }
2827 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2828 myop.op_type = OP_ENTERSUB;
968b3946
GS
2829 }
2830
312caa8e 2831 if (!(flags & G_EVAL)) {
0cdb2077 2832 CATCH_SET(TRUE);
d6f07c05 2833 CALL_BODY_SUB((OP*)&myop);
312caa8e 2834 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2835 CATCH_SET(oldcatch);
312caa8e
CS
2836 }
2837 else {
8e90e786 2838 I32 old_cxix;
d78bda3d 2839 myop.op_other = (OP*)&myop;
101d6365 2840 (void)POPMARK;
8e90e786 2841 old_cxix = cxstack_ix;
274ed8ae 2842 create_eval_scope(NULL, flags|G_FAKINGEVAL);
c318a6ee 2843 INCMARK;
a0d0e21e 2844
14dd3ad8 2845 JMPENV_PUSH(ret);
edb2152a 2846
6224f72b
GS
2847 switch (ret) {
2848 case 0:
14dd3ad8 2849 redo_body:
d6f07c05 2850 CALL_BODY_SUB((OP*)&myop);
312caa8e 2851 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2852 if (!(flags & G_KEEPERR)) {
ab69dbc2 2853 CLEAR_ERRSV();
8433848b 2854 }
a0d0e21e 2855 break;
6224f72b 2856 case 1:
f86702cc 2857 STATUS_ALL_FAILURE;
924ba076 2858 /* FALLTHROUGH */
6224f72b 2859 case 2:
a0d0e21e 2860 /* my_exit() was called */
03d9f026 2861 SET_CURSTASH(PL_defstash);
a0d0e21e 2862 FREETMPS;
14dd3ad8 2863 JMPENV_POP;
f86702cc 2864 my_exit_jump();
e5964223 2865 NOT_REACHED; /* NOTREACHED */
6224f72b 2866 case 3:
3280af22 2867 if (PL_restartop) {
febb3a6d 2868 PL_restartjmpenv = NULL;
533c011a 2869 PL_op = PL_restartop;
3280af22 2870 PL_restartop = 0;
312caa8e 2871 goto redo_body;
a0d0e21e 2872 }
3280af22 2873 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2874 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2875 retval = 0;
2876 else {
2877 retval = 1;
3280af22 2878 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2879 }
312caa8e 2880 break;
a0d0e21e 2881 }
a0d0e21e 2882
8e90e786
DM
2883 /* if we croaked, depending on how we croaked the eval scope
2884 * may or may not have already been popped */
2885 if (cxstack_ix > old_cxix) {
2886 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2887 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2888 delete_eval_scope();
8e90e786 2889 }
14dd3ad8 2890 JMPENV_POP;
a0d0e21e 2891 }
1e422769 2892
a0d0e21e 2893 if (flags & G_DISCARD) {
3280af22 2894 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2895 retval = 0;
2896 FREETMPS;
2897 LEAVE;
2898 }
533c011a 2899 PL_op = oldop;
a0d0e21e
LW
2900 return retval;
2901}
2902
6e72f9df 2903/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2904
954c1994
GS
2905/*
2906=for apidoc p||eval_sv
2907
72d33970 2908Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2909as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2910
2911=cut
2912*/
2913
a0d0e21e 2914I32
864dbfa3 2915Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2916
8ac85365 2917 /* See G_* flags in cop.h */
a0d0e21e 2918{
97aff369 2919 dVAR;
a0d0e21e 2920 UNOP myop; /* fake syntax tree node */
5b434c73 2921 VOL I32 oldmark;
8ea43dc8 2922 VOL I32 retval = 0;
6224f72b 2923 int ret;
c4420975 2924 OP* const oldop = PL_op;
db36c5a1 2925 dJMPENV;
84902520 2926
7918f24d
NC
2927 PERL_ARGS_ASSERT_EVAL_SV;
2928
4633a7c4
LW
2929 if (flags & G_DISCARD) {
2930 ENTER;
2931 SAVETMPS;
2932 }
2933
462e5cf6 2934 SAVEOP();
533c011a 2935 PL_op = (OP*)&myop;
5ff48db8 2936 Zero(&myop, 1, UNOP);
5b434c73
DD
2937 {
2938 dSP;
2939 oldmark = SP - PL_stack_base;
2940 EXTEND(SP, 1);
2941 PUSHs(sv);
2942 PUTBACK;
2943 }
79072805 2944
4633a7c4
LW
2945 if (!(flags & G_NOARGS))
2946 myop.op_flags = OPf_STACKED;
6e72f9df 2947 myop.op_type = OP_ENTEREVAL;
4f911530 2948 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2949 if (flags & G_KEEPERR)
2950 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2951
2952 if (flags & G_RE_REPARSING)
2953 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2954
dedbcade 2955 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 2956 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
2957 TAINT_PROPER("eval_sv()");
2958
14dd3ad8 2959 JMPENV_PUSH(ret);
6224f72b
GS
2960 switch (ret) {
2961 case 0:
14dd3ad8 2962 redo_body:
2ba65d5f
DM
2963 if (PL_op == (OP*)(&myop)) {
2964 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2965 if (!PL_op)
2966 goto fail; /* failed in compilation */
2967 }
4aca2f62 2968 CALLRUNOPS(aTHX);
312caa8e 2969 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2970 if (!(flags & G_KEEPERR)) {
ab69dbc2 2971 CLEAR_ERRSV();
8433848b 2972 }
4633a7c4 2973 break;
6224f72b 2974 case 1:
f86702cc 2975 STATUS_ALL_FAILURE;
924ba076 2976 /* FALLTHROUGH */
6224f72b 2977 case 2:
4633a7c4 2978 /* my_exit() was called */
03d9f026 2979 SET_CURSTASH(PL_defstash);
4633a7c4 2980 FREETMPS;
14dd3ad8 2981 JMPENV_POP;
f86702cc 2982 my_exit_jump();
e5964223 2983 NOT_REACHED; /* NOTREACHED */
6224f72b 2984 case 3:
3280af22 2985 if (PL_restartop) {
febb3a6d 2986 PL_restartjmpenv = NULL;
533c011a 2987 PL_op = PL_restartop;
3280af22 2988 PL_restartop = 0;
312caa8e 2989 goto redo_body;
4633a7c4 2990 }
4aca2f62 2991 fail:
3280af22 2992 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2993 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2994 retval = 0;
2995 else {
2996 retval = 1;
3280af22 2997 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2998 }
312caa8e 2999 break;
4633a7c4
LW
3000 }
3001
14dd3ad8 3002 JMPENV_POP;
4633a7c4 3003 if (flags & G_DISCARD) {
3280af22 3004 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
3005 retval = 0;
3006 FREETMPS;
3007 LEAVE;
3008 }
533c011a 3009 PL_op = oldop;
4633a7c4
LW
3010 return retval;
3011}
3012
954c1994
GS
3013/*
3014=for apidoc p||eval_pv
3015
422791e4 3016Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
3017
3018=cut
3019*/
3020
137443ea 3021SV*
864dbfa3 3022Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3023{
137443ea
PP
3024 SV* sv = newSVpv(p, 0);
3025
7918f24d
NC
3026 PERL_ARGS_ASSERT_EVAL_PV;
3027
864dbfa3 3028 eval_sv(sv, G_SCALAR);
137443ea
PP
3029 SvREFCNT_dec(sv);
3030
ed1786ad
DD
3031 {
3032 dSP;
3033 sv = POPs;
3034 PUTBACK;
3035 }
137443ea 3036
eed484f9
DD
3037 /* just check empty string or undef? */
3038 if (croak_on_error) {
3039 SV * const errsv = ERRSV;
3040 if(SvTRUE_NN(errsv))
3041 /* replace with croak_sv? */
3042 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3043 }
137443ea
PP
3044
3045 return sv;
3046}
3047
4633a7c4
LW
3048/* Require a module. */
3049
954c1994 3050/*
ccfc67b7
JH
3051=head1 Embedding Functions
3052
954c1994
GS
3053=for apidoc p||require_pv
3054
7d3fb230
BS
3055Tells Perl to C<require> the file named by the string argument. It is
3056analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3057implemented that way; consider using load_module instead.
954c1994 3058
7d3fb230 3059=cut */
954c1994 3060
4633a7c4 3061void
864dbfa3 3062Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3063{
d3acc0f7 3064 dSP;
97aff369 3065 SV* sv;
7918f24d
NC
3066
3067 PERL_ARGS_ASSERT_REQUIRE_PV;
3068
e788e7d3 3069 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3070 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3071 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3072 POPSTACK;
79072805
LW
3073}
3074
76e3520e 3075STATIC void
b6f82619 3076S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3077{
ab821d7f 3078 /* This message really ought to be max 23 lines.
75c72d73 3079 * Removed -h because the user already knows that option. Others? */
fb73857a 3080
1566c39d
NC
3081 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3082 minimum of 509 character string literals. */
27da23d5 3083 static const char * const usage_msg[] = {
1566c39d
NC
3084" -0[octal] specify record separator (\\0, if no argument)\n"
3085" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3086" -C[number/list] enables the listed Unicode features\n"
3087" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3088" -d[:debugger] run program under debugger\n"
3089" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3090" -e program one line of program (several -e's allowed, omit programfile)\n"
3091" -E program like -e, but enables all optional features\n"
3092" -f don't do $sitelib/sitecustomize.pl at startup\n"
3093" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3094" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3095" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3096" -l[octal] enable line ending processing, specifies line terminator\n"
3097" -[mM][-]module execute \"use/no module...\" before executing program\n"
3098" -n assume \"while (<>) { ... }\" loop around program\n"
3099" -p assume loop like -n but print line also, like sed\n"
3100" -s enable rudimentary parsing for switches after programfile\n"
3101" -S look for programfile using PATH environment variable\n",
3102" -t enable tainting warnings\n"
3103" -T enable tainting checks\n"
3104" -u dump core after parsing program\n"
3105" -U allow unsafe operations\n"
3106" -v print version, patchlevel and license\n"
3107" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3108" -w enable many useful warnings\n"
1566c39d
NC
3109" -W enable all warnings\n"
3110" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3111" -X disable all warnings\n"
3112" \n"
3113"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3114NULL
3115};
27da23d5 3116 const char * const *p = usage_msg;
1566c39d 3117 PerlIO *out = PerlIO_stdout();
fb73857a 3118
1566c39d
NC
3119 PerlIO_printf(out,
3120 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3121 PL_origargv[0]);
fb73857a 3122 while (*p)
1566c39d 3123 PerlIO_puts(out, *p++);
b6f82619 3124 my_exit(0);
4633a7c4
LW
3125}
3126
b4ab917c
DM
3127/* convert a string of -D options (or digits) into an int.
3128 * sets *s to point to the char after the options */
3129
3130#ifdef DEBUGGING
3131int
e1ec3a88 3132Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3133{
27da23d5 3134 static const char * const usage_msgd[] = {
651b8f1a
NC
3135 " Debugging flag values: (see also -d)\n"
3136 " p Tokenizing and parsing (with v, displays parse stack)\n"
3137 " s Stack snapshots (with v, displays all stacks)\n"
3138 " l Context (loop) stack processing\n"
3139 " t Trace execution\n"
3140 " o Method and overloading resolution\n",
3141 " c String/numeric conversions\n"
3142 " P Print profiling info, source file input state\n"
3143 " m Memory and SV allocation\n"
3144 " f Format processing\n"
3145 " r Regular expression parsing and execution\n"
3146 " x Syntax tree dump\n",
3147 " u Tainting checks\n"
3148 " H Hash dump -- usurps values()\n"
3149 " X Scratchpad allocation\n"
3150 " D Cleaning up\n"
56967202 3151 " S Op slab allocation\n"
651b8f1a
NC
3152 " T Tokenising\n"
3153 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3154 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3155 " v Verbose: use in conjunction with other flags\n"
3156 " C Copy On Write\n"
3157 " A Consistency checks on internal structures\n"
3158 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3159 " M trace smart match resolution\n"
3160 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3161 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3162 " i trace PerlIO layer processing\n",
e6e64d9b
JC
3163 NULL
3164 };
22ff3130 3165 UV uv = 0;
7918f24d
NC
3166
3167 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3168
b4ab917c
DM
3169 if (isALPHA(**s)) {
3170 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3171 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3172
0eb30aeb 3173 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3174 const char * const d = strchr(debopts,**s);
b4ab917c 3175 if (d)
22ff3130 3176 uv |= 1 << (d - debopts);
b4ab917c 3177 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3178 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3179 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3180 }
3181 }
e6e64d9b 3182 else if (isDIGIT(**s)) {
96e440d2 3183 const char* e;
22ff3130 3184 if (grok_atoUV(*s, &uv, &e))
96e440d2 3185 *s = e;
0eb30aeb 3186 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3187 }
ddcf8bc1 3188 else if (givehelp) {
06e869a4 3189 const char *const *p = usage_msgd;
651b8f1a 3190 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3191 }
22ff3130 3192 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3193}
3194#endif
3195
79072805
LW
3196/* This routine handles any switches that can be given during run */
3197
c7030b81
NC
3198const char *
3199Perl_moreswitches(pTHX_ const char *s)
79072805 3200{
27da23d5 3201 dVAR;
84c133a0 3202 UV rschar;
0544e6df 3203 const char option = *s; /* used to remember option in -m/-M code */
79072805 3204
7918f24d
NC
3205 PERL_ARGS_ASSERT_MORESWITCHES;
3206
79072805
LW
3207 switch (*s) {
3208 case '0':
a863c7d1 3209 {
f2095865 3210 I32 flags = 0;
a3b680e6 3211 STRLEN numlen;
f2095865
JH
3212
3213 SvREFCNT_dec(PL_rs);
3214 if (s[1] == 'x' && s[2]) {
a3b680e6 3215 const char *e = s+=2;
f2095865
JH
3216 U8 *tmps;
3217
a3b680e6
AL
3218 while (*e)
3219 e++;
f2095865
JH
3220 numlen = e - s;
3221 flags = PERL_SCAN_SILENT_ILLDIGIT;
3222 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3223 if (s + numlen < e) {
3224 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3225 numlen = 0;
3226 s--;
3227 }
396482e1 3228 PL_rs = newSVpvs("");
10656159 3229 tmps = (U8*) SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865 3230 uvchr_to_utf8(tmps, rschar);
5f560d8a 3231 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3232 SvUTF8_on(PL_rs);
3233 }
3234 else {
3235 numlen = 4;
3236 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3237 if (rschar & ~((U8)~0))
3238 PL_rs = &PL_sv_undef;
3239 else if (!rschar && numlen >= 2)
396482e1 3240 PL_rs = newSVpvs("");
f2095865
JH
3241 else {
3242 char ch = (char)rschar;
3243 PL_rs = newSVpvn(&ch, 1);
3244 }
3245 }
64ace3f8 3246 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3247 return s + numlen;
a863c7d1 3248 }
46487f74 3249 case 'C':
a05d7ebb 3250 s++;
dd374669 3251 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3252 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3253 PL_utf8cache = -1;
46487f74 3254 return s;
2304df62 3255 case 'F':
5fc691f1 3256 PL_minus_a = TRUE;
3280af22 3257 PL_minus_F = TRUE;
24ffa309 3258 PL_minus_n = TRUE;
ebce5377
RGS
3259 PL_splitstr = ++s;
3260 while (*s && !isSPACE(*s)) ++s;
e49e380e 3261 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3262 return s;
79072805 3263 case 'a':
3280af22 3264 PL_minus_a = TRUE;
24ffa309 3265 PL_minus_n = TRUE;
79072805
LW
3266 s++;
3267 return s;
3268 case 'c':
3280af22 3269 PL_minus_c = TRUE;
79072805
LW
3270 s++;
3271 return s;
3272 case 'd':
f20b2998 3273 forbid_setid('d', FALSE);
4633a7c4 3274 s++;
2cbb2ee1
RGS
3275
3276 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3277 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3278 ++s;
3279 my_setenv("PERL5DB_THREADED", "1");
3280 }
3281
70c94a19
RR
3282 /* The following permits -d:Mod to accepts arguments following an =
3283 in the fashion that -MSome::Mod does. */
3284 if (*s == ':' || *s == '=') {
b19934fb
NC
3285 const char *start;
3286 const char *end;
3287 SV *sv;
3288
3289 if (*++s == '-') {
3290 ++s;
3291 sv = newSVpvs("no Devel::");
3292 } else {
3293 sv = newSVpvs("use Devel::");
3294 }
3295
3296 start = s;
3297 end = s + strlen(s);
f85893a1 3298
b19934fb 3299 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3300 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3301 if (*s != '=')
f85893a1 3302 sv_catpvn(sv, start, end - start);
70c94a19
RR
3303 else {
3304 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3305 /* Don't use NUL as q// delimiter here, this string goes in the
3306 * environment. */
3307 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3308 }
f85893a1 3309 s = end;
184f32ec 3310 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3311 SvREFCNT_dec(sv);
4633a7c4 3312 }
ed094faf 3313 if (!PL_perldb) {
3280af22 3314 PL_perldb = PERLDB_ALL;
a0d0e21e 3315 init_debugger();
ed094faf 3316 }
79072805
LW
3317 return s;
3318 case 'D':
0453d815 3319 {
79072805 3320#ifdef DEBUGGING
f20b2998 3321 forbid_setid('D', FALSE);
b4ab917c 3322 s++;
dd374669 3323 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3324#else /* !DEBUGGING */
0453d815 3325 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3326 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3327 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3328 for (s++; isWORDCHAR(*s); s++) ;
79072805 3329#endif
79072805 3330 return s;
2b5060ae 3331 NOT_REACHED; /* NOTREACHED */
0453d815 3332 }
4633a7c4 3333 case 'h':
b6f82619 3334 usage();
2b5060ae
DM
3335 NOT_REACHED; /* NOTREACHED */
3336
79072805 3337 case 'i':
43c5f42d 3338 Safefree(PL_inplace);
c030f24b
GH
3339#if defined(__CYGWIN__) /* do backup extension automagically */
3340 if (*(s+1) == '\0') {
c86a4f2e 3341 PL_inplace = savepvs(".bak");
c030f24b
GH
3342 return s+1;
3343 }
3344#endif /* __CYGWIN__ */
5ef5d758 3345 {
d4c19fe8 3346 const char * const start = ++s;
5ef5d758
NC
3347 while (*s && !isSPACE(*s))
3348 ++s;
3349
3350 PL_inplace = savepvn(start, s - start);
3351 }
fb73857a 3352 return s;
4e49a025 3353 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3354 forbid_setid('I', FALSE);
fb73857a
PP
3355 ++s;
3356 while (*s && isSPACE(*s))
3357 ++s;
3358 if (*s) {
c7030b81 3359 const char *e, *p;
0df16ed7
GS
3360 p = s;
3361 /* ignore trailing spaces (possibly followed by other switches) */
3362 do {
3363 for (e = p; *e && !isSPACE(*e); e++) ;
3364 p = e;
3365 while (isSPACE(*p))
3366 p++;
3367 } while (*p && *p != '-');
55b4bc1c 3368 incpush(s, e-s,
e28f3139 3369 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3370 s = p;
3371 if (*s == '-')
3372 s++;
79072805
LW
3373 }
3374 else
a67e862a 3375 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3376 return s;
79072805 3377 case 'l':
3280af22 3378 PL_minus_l = TRUE;
79072805 3379 s++;
7889fe52
NIS
3380 if (PL_ors_sv) {
3381 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3382 PL_ors_sv = NULL;
7889fe52 3383 }
79072805 3384 if (isDIGIT(*s)) {
53305cf1 3385 I32 flags = 0;
a3b680e6 3386 STRLEN numlen;
396482e1 3387 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3388 numlen = 3 + (*s == '0');
3389 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3390 s += numlen;
3391 }
3392 else {
8bfdd7d9 3393 if (RsPARA(PL_rs)) {
396482e1 3394 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3395 }
3396 else {
8bfdd7d9 3397 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3398 }
79072805
LW
3399 }
3400 return s;
1a30305b 3401 case 'M':
f20b2998 3402 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3403 /* FALLTHROUGH */
1a30305b 3404 case 'm':
f20b2998 3405 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3406 if (*++s) {
c7030b81 3407 const char *start;
b64cb68c 3408 const char *end;
11343788 3409 SV *sv;
e1ec3a88 3410 const char *use = "use ";
0544e6df 3411 bool colon = FALSE;
a5f75d66 3412 /* -M-foo == 'no foo' */
d0043bd1
NC
3413 /* Leading space on " no " is deliberate, to make both
3414 possibilities the same length. */
3415 if (*s == '-') { use = " no "; ++s; }
3416 sv = newSVpvn(use,4);
a5f75d66 3417 start = s;
1a30305b 3418 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3419 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3420 if( *s++ == ':' ) {
3421 if( *s == ':' )
3422 s++;
3423 else
3424 colon = TRUE;
3425 }
3426 }
3427 if (s == start)
3428 Perl_croak(aTHX_ "Module name required with -%c option",
3429 option);
3430 if (colon)
3431 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3432 "contains single ':'",
63da6837 3433 (int)(s - start), start, option);
b64cb68c 3434 end = s + strlen(s);
c07a80fd 3435 if (*s != '=') {
b64cb68c 3436 sv_catpvn(sv, start, end - start);
0544e6df 3437 if (option == 'm') {
c07a80fd 3438 if (*s != '\0')
cea2e8a9 3439 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3440 sv_catpvs( sv, " ()");
c07a80fd
PP
3441 }
3442 } else {
11343788 3443 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3444 /* Use NUL as q''-delimiter. */
3445 sv_catpvs(sv, " split(/,/,q\0");
3446 ++s;
3447 sv_catpvn(sv, s, end - s);
396482e1 3448 sv_catpvs(sv, "\0)");
c07a80fd 3449 }
b64cb68c 3450 s = end;
29a861e7 3451 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3452 }
3453 else
0544e6df 3454 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3455 return s;
79072805 3456 case 'n':
3280af22 3457 PL_minus_n = TRUE;
79072805
LW
3458 s++;
3459 return s;
3460 case 'p':
3280af22 3461 PL_minus_p = TRUE;
79072805
LW
3462 s++;
3463 return s;
3464 case 's':
f20b2998 3465 forbid_setid('s', FALSE);
3280af22 3466 PL_doswitches = TRUE;
79072805
LW
3467 s++;
3468 return s;
6537fe72 3469 case 't':
27a6968b 3470 case 'T':
dc6d7f5c 3471#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3472 /* silently ignore */
dc6d7f5c 3473#elif defined(NO_TAINT_SUPPORT)
3231f579 3474 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3475 "Cowardly refusing to run with -t or -T flags");
3476#else
3477<