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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("");
76f68e9b
MHM
298 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
299 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
300 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 301#ifdef USE_ITHREADS
402d2eb1
NC
302 /* First entry is a list of empty elements. It needs to be initialised
303 else all hell breaks loose in S_find_uninit_var(). */
304 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 305 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 306 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 307#endif
e5dd39fc 308#ifdef USE_REENTRANT_API
59bd0823 309 Perl_reentrant_init(aTHX);
e5dd39fc 310#endif
7dc86639
YO
311#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
312 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
313 * This MUST be done before any hash stores or fetches take place.
314 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
315 * yourself, it is your responsibility to provide a good random seed!
316 * You can also define PERL_HASH_SEED in compile time, see hv.h.
317 *
318 * XXX: fix this comment */
319 if (PL_hash_seed_set == FALSE) {
320 Perl_get_hash_seed(aTHX_ PL_hash_seed);
321 PL_hash_seed_set= TRUE;
322 }
323#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
324
325 /* Note that strtab is a rather special HV. Assumptions are made
326 about not iterating on it, and not adding tie magic to it.
327 It is properly deallocated in perl_destruct() */
328 PL_strtab = newHV();
329
3d47000e
AB
330 HvSHAREKEYS_off(PL_strtab); /* mandatory */
331 hv_ksplit(PL_strtab, 512);
332
a38ab475
RZ
333 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
334
2f42fcb0
JH
335#ifndef PERL_MICRO
336# ifdef USE_ENVIRON_ARRAY
0631ea03 337 PL_origenviron = environ;
2f42fcb0 338# endif
0631ea03
AB
339#endif
340
5311654c 341 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 342 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
343 * The HZ if not originally defined has been by now
344 * been defined as CLK_TCK, if available. */
b6c36746 345#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
346 PL_clocktick = sysconf(_SC_CLK_TCK);
347 if (PL_clocktick <= 0)
348#endif
349 PL_clocktick = HZ;
350
081fc587
AB
351 PL_stashcache = newHV();
352
e8e3635e 353 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
d7aa5382 354
27da23d5
JH
355#ifdef HAS_MMAP
356 if (!PL_mmap_page_size) {
357#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
358 {
359 SETERRNO(0, SS_NORMAL);
360# ifdef _SC_PAGESIZE
361 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
362# else
363 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
364# endif
365 if ((long) PL_mmap_page_size < 0) {
366 if (errno) {
44f8325f 367 SV * const error = ERRSV;
d4c19fe8 368 SvUPGRADE(error, SVt_PV);
0510663f 369 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
370 }
371 else
372 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
373 }
374 }
375#else
376# ifdef HAS_GETPAGESIZE
377 PL_mmap_page_size = getpagesize();
378# else
379# if defined(I_SYS_PARAM) && defined(PAGESIZE)
380 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
381# endif
382# endif
383#endif
384 if (PL_mmap_page_size <= 0)
385 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
386 (IV) PL_mmap_page_size);
387 }
388#endif /* HAS_MMAP */
389
390#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
391 PL_timesbase.tms_utime = 0;
392 PL_timesbase.tms_stime = 0;
393 PL_timesbase.tms_cutime = 0;
394 PL_timesbase.tms_cstime = 0;
395#endif
396
7d113631
NC
397 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
398
a3e6e81e 399 PL_registered_mros = newHV();
9e169432
NC
400 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
401 HvMAX(PL_registered_mros) = 0;
a3e6e81e 402
7b8dd5f4
KW
403 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
404 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
405 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
406 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
407 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
408 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
409 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
410 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
411 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
412 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
413 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
414 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
7b8dd5f4
KW
415 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
416 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
417 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
418 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
02f811dd 419 PL_GCB_invlist = _new_invlist_C_array(_Perl_GCB_invlist);
bf4268fa
KW
420 PL_SB_invlist = _new_invlist_C_array(_Perl_SB_invlist);
421 PL_WB_invlist = _new_invlist_C_array(_Perl_WB_invlist);
6b659339 422 PL_LB_invlist = _new_invlist_C_array(_Perl_LB_invlist);
7b8dd5f4 423
8990e307 424 ENTER;
79072805
LW
425}
426
954c1994 427/*
62375a60
NIS
428=for apidoc nothreadhook
429
430Stub that provides thread hook for perl_destruct when there are
431no threads.
432
433=cut
434*/
435
436int
4e9e3734 437Perl_nothreadhook(pTHX)
62375a60 438{
96a5add6 439 PERL_UNUSED_CONTEXT;
62375a60
NIS
440 return 0;
441}
442
41e4abd8
NC
443#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
444void
445Perl_dump_sv_child(pTHX_ SV *sv)
446{
447 ssize_t got;
bf357333
NC
448 const int sock = PL_dumper_fd;
449 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
450 union control_un control;
451 struct msghdr msg;
808ad2d0 452 struct iovec vec[2];
bf357333 453 struct cmsghdr *cmptr;
808ad2d0
NC
454 int returned_errno;
455 unsigned char buffer[256];
41e4abd8 456
7918f24d
NC
457 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
458
bf357333 459 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
460 return;
461
462 PerlIO_flush(Perl_debug_log);
463
bf357333
NC
464 /* All these shenanigans are to pass a file descriptor over to our child for
465 it to dump out to. We can't let it hold open the file descriptor when it
466 forks, as the file descriptor it will dump to can turn out to be one end
467 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 468 be open, the wait would be forever.) */
bf357333
NC
469
470 msg.msg_control = control.control;
471 msg.msg_controllen = sizeof(control.control);
472 /* We're a connected socket so we don't need a destination */
473 msg.msg_name = NULL;
474 msg.msg_namelen = 0;
475 msg.msg_iov = vec;
808ad2d0 476 msg.msg_iovlen = 1;
bf357333
NC
477
478 cmptr = CMSG_FIRSTHDR(&msg);
479 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
480 cmptr->cmsg_level = SOL_SOCKET;
481 cmptr->cmsg_type = SCM_RIGHTS;
482 *((int *)CMSG_DATA(cmptr)) = 1;
483
484 vec[0].iov_base = (void*)&sv;
485 vec[0].iov_len = sizeof(sv);
486 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
487
488 if(got < 0) {
bf357333 489 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
490 abort();
491 }
bf357333
NC
492 if(got < sizeof(sv)) {
493 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
494 abort();
495 }
496
808ad2d0
NC
497 /* Return protocol is
498 int: errno value
499 unsigned char: length of location string (0 for empty)
500 unsigned char*: string (not terminated)
501 */
502 vec[0].iov_base = (void*)&returned_errno;
503 vec[0].iov_len = sizeof(returned_errno);
504 vec[1].iov_base = buffer;
505 vec[1].iov_len = 1;
506
507 got = readv(sock, vec, 2);
41e4abd8
NC
508
509 if(got < 0) {
510 perror("Debug leaking scalars parent read failed");
808ad2d0 511 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
512 abort();
513 }
808ad2d0 514 if(got < sizeof(returned_errno) + 1) {
41e4abd8 515 perror("Debug leaking scalars parent short read");
808ad2d0 516 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
517 abort();
518 }
519
808ad2d0
NC
520 if (*buffer) {
521 got = read(sock, buffer + 1, *buffer);
522 if(got < 0) {
523 perror("Debug leaking scalars parent read 2 failed");
524 PerlIO_flush(PerlIO_stderr());
525 abort();
526 }
527
528 if(got < *buffer) {
529 perror("Debug leaking scalars parent short read 2");
530 PerlIO_flush(PerlIO_stderr());
531 abort();
532 }
533 }
534
535 if (returned_errno || *buffer) {
536 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
537 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 538 returned_errno, Strerror(returned_errno));
41e4abd8
NC
539 }
540}
541#endif
542
62375a60 543/*
954c1994
GS
544=for apidoc perl_destruct
545
546Shuts down a Perl interpreter. See L<perlembed>.
547
548=cut
549*/
550
31d77e54 551int
0cb96387 552perl_destruct(pTHXx)
79072805 553{
27da23d5 554 dVAR;
be2ea8ed 555 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 556 HV *hv;
2aa47728 557#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
558 pid_t child;
559#endif
9c0b6888 560 int i;
8990e307 561
7918f24d
NC
562 PERL_ARGS_ASSERT_PERL_DESTRUCT;
563#ifndef MULTIPLICITY
ed6c66dd 564 PERL_UNUSED_ARG(my_perl);
7918f24d 565#endif
9d4ba2ae 566
3d22c4f0
GG
567 assert(PL_scopestack_ix == 1);
568
7766f137
GS
569 /* wait for all pseudo-forked children to finish */
570 PERL_WAIT_FOR_CHILDREN;
571
3280af22 572 destruct_level = PL_perl_destruct_level;
36e77d41 573#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 574 {
9d4ba2ae
AL
575 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
576 if (s) {
96e440d2
JH
577 int i;
578 if (strEQ(s, "-1")) { /* Special case: modperl folklore. */
579 i = -1;
580 } else {
22ff3130
HS
581 UV uv;
582 if (grok_atoUV(s, &uv, NULL) && uv <= INT_MAX)
583 i = (int)uv;
584 else
585 i = 0;
96e440d2 586 }
36e77d41
DD
587#ifdef DEBUGGING
588 if (destruct_level < i) destruct_level = i;
589#endif
590#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
591 /* RT #114496, for perl_free */
592 PL_perl_destruct_level = i;
36e77d41 593#endif
5f05dabc 594 }
4633a7c4
LW
595 }
596#endif
597
27da23d5 598 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
599 dJMPENV;
600 int x = 0;
601
602 JMPENV_PUSH(x);
1b6737cc 603 PERL_UNUSED_VAR(x);
9ebf26ad 604 if (PL_endav && !PL_minus_c) {
ca7b837b 605 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 606 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 607 }
f3faeb53 608 JMPENV_POP;
26f423df 609 }
f3faeb53 610 LEAVE;
a0d0e21e 611 FREETMPS;
3d22c4f0 612 assert(PL_scopestack_ix == 0);
a0d0e21e 613
e00b64d4 614 /* Need to flush since END blocks can produce output */
8abddda3
TC
615 /* flush stdout separately, since we can identify it */
616#ifdef USE_PERLIO
617 {
618 PerlIO *stdo = PerlIO_stdout();
619 if (*stdo && PerlIO_flush(stdo)) {
620 PerlIO_restore_errno(stdo);
621 PerlIO_printf(PerlIO_stderr(), "Unable to flush stdout: %s",
622 Strerror(errno));
623 if (!STATUS_UNIX)
624 STATUS_ALL_FAILURE;
625 }
626 }
627#endif
f13a2bc0 628 my_fflush_all();
e00b64d4 629
75d476e2 630#ifdef PERL_TRACE_OPS
e71f25b3
JC
631 /* dump OP-counts if $ENV{PERL_TRACE_OPS} > 0 */
632 {
633 const char * const ptoenv = PerlEnv_getenv("PERL_TRACE_OPS");
634 UV uv;
635
636 if (!ptoenv || !Perl_grok_atoUV(ptoenv, &uv, NULL)
637 || !(uv > 0))
638 goto no_trace_out;
639 }
75d476e2
SM
640 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
641 for (i = 0; i <= OP_max; ++i) {
e71f25b3
JC
642 if (PL_op_exec_cnt[i])
643 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
75d476e2
SM
644 }
645 /* Utility slot for easily doing little tracing experiments in the runloop: */
646 if (PL_op_exec_cnt[OP_max+1] != 0)
647 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
648 PerlIO_printf(Perl_debug_log, "\n");
e71f25b3 649 no_trace_out:
75d476e2
SM
650#endif
651
652
16c91539 653 if (PL_threadhook(aTHX)) {
62375a60 654 /* Threads hook has vetoed further cleanup */
c301d606 655 PL_veto_cleanup = TRUE;
37038d91 656 return STATUS_EXIT;
62375a60
NIS
657 }
658
2aa47728
NC
659#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
660 if (destruct_level != 0) {
661 /* Fork here to create a child. Our child's job is to preserve the
662 state of scalars prior to destruction, so that we can instruct it
663 to dump any scalars that we later find have leaked.
664 There's no subtlety in this code - it assumes POSIX, and it doesn't
665 fail gracefully */
666 int fd[2];
667
668 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
669 perror("Debug leaking scalars socketpair failed");
670 abort();
671 }
672
673 child = fork();
674 if(child == -1) {
675 perror("Debug leaking scalars fork failed");
676 abort();
677 }
678 if (!child) {
679 /* We are the child */
3125a5a4
NC
680 const int sock = fd[1];
681 const int debug_fd = PerlIO_fileno(Perl_debug_log);
682 int f;
808ad2d0
NC
683 const char *where;
684 /* Our success message is an integer 0, and a char 0 */
b61433a9 685 static const char success[sizeof(int) + 1] = {0};
3125a5a4 686
2aa47728 687 close(fd[0]);
2aa47728 688
3125a5a4
NC
689 /* We need to close all other file descriptors otherwise we end up
690 with interesting hangs, where the parent closes its end of a
691 pipe, and sits waiting for (another) child to terminate. Only
692 that child never terminates, because it never gets EOF, because
bf357333
NC
693 we also have the far end of the pipe open. We even need to
694 close the debugging fd, because sometimes it happens to be one
695 end of a pipe, and a process is waiting on the other end for
696 EOF. Normally it would be closed at some point earlier in
697 destruction, but if we happen to cause the pipe to remain open,
698 EOF never occurs, and we get an infinite hang. Hence all the
699 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
700
701 f = sysconf(_SC_OPEN_MAX);
702 if(f < 0) {
808ad2d0
NC
703 where = "sysconf failed";
704 goto abort;
3125a5a4
NC
705 }
706 while (f--) {
707 if (f == sock)
708 continue;
3125a5a4
NC
709 close(f);
710 }
711
2aa47728
NC
712 while (1) {
713 SV *target;
bf357333
NC
714 union control_un control;
715 struct msghdr msg;
716 struct iovec vec[1];
717 struct cmsghdr *cmptr;
718 ssize_t got;
719 int got_fd;
720
721 msg.msg_control = control.control;
722 msg.msg_controllen = sizeof(control.control);
723 /* We're a connected socket so we don't need a source */
724 msg.msg_name = NULL;
725 msg.msg_namelen = 0;
726 msg.msg_iov = vec;
c3caa5c3 727 msg.msg_iovlen = C_ARRAY_LENGTH(vec);
bf357333
NC
728
729 vec[0].iov_base = (void*)&target;
730 vec[0].iov_len = sizeof(target);
731
732 got = recvmsg(sock, &msg, 0);
2aa47728
NC
733
734 if(got == 0)
735 break;
736 if(got < 0) {
808ad2d0
NC
737 where = "recv failed";
738 goto abort;
2aa47728
NC
739 }
740 if(got < sizeof(target)) {
808ad2d0
NC
741 where = "short recv";
742 goto abort;
2aa47728 743 }
bf357333 744
808ad2d0
NC
745 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
746 where = "no cmsg";
747 goto abort;
748 }
749 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
750 where = "wrong cmsg_len";
751 goto abort;
752 }
753 if(cmptr->cmsg_level != SOL_SOCKET) {
754 where = "wrong cmsg_level";
755 goto abort;
756 }
757 if(cmptr->cmsg_type != SCM_RIGHTS) {
758 where = "wrong cmsg_type";
759 goto abort;
760 }
bf357333
NC
761
762 got_fd = *(int*)CMSG_DATA(cmptr);
763 /* For our last little bit of trickery, put the file descriptor
764 back into Perl_debug_log, as if we never actually closed it
765 */
808ad2d0
NC
766 if(got_fd != debug_fd) {
767 if (dup2(got_fd, debug_fd) == -1) {
768 where = "dup2";
769 goto abort;
770 }
771 }
2aa47728 772 sv_dump(target);
bf357333 773
2aa47728
NC
774 PerlIO_flush(Perl_debug_log);
775
808ad2d0 776 got = write(sock, &success, sizeof(success));
2aa47728
NC
777
778 if(got < 0) {
808ad2d0
NC
779 where = "write failed";
780 goto abort;
2aa47728 781 }
808ad2d0
NC
782 if(got < sizeof(success)) {
783 where = "short write";
784 goto abort;
2aa47728
NC
785 }
786 }
787 _exit(0);
808ad2d0
NC
788 abort:
789 {
790 int send_errno = errno;
791 unsigned char length = (unsigned char) strlen(where);
792 struct iovec failure[3] = {
793 {(void*)&send_errno, sizeof(send_errno)},
794 {&length, 1},
795 {(void*)where, length}
796 };
797 int got = writev(sock, failure, 3);
798 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
799 in the parent if we try to read from the socketpair after the
800 child has exited, even if there was data to read.
801 So sleep a bit to give the parent a fighting chance of
802 reading the data. */
803 sleep(2);
804 _exit((got == -1) ? errno : 0);
805 }
bf357333 806 /* End of child. */
2aa47728 807 }
41e4abd8 808 PL_dumper_fd = fd[0];
2aa47728
NC
809 close(fd[1]);
810 }
811#endif
812
ff0cee69
PP
813 /* We must account for everything. */
814
815 /* Destroy the main CV and syntax tree */
37e77c23
FC
816 /* Set PL_curcop now, because destroying ops can cause new SVs
817 to be generated in Perl_pad_swipe, and when running with
818 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
819 op from which the filename structure member is copied. */
17fbfdf6 820 PL_curcop = &PL_compiling;
3280af22 821 if (PL_main_root) {
4e380990
DM
822 /* ensure comppad/curpad to refer to main's pad */
823 if (CvPADLIST(PL_main_cv)) {
824 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 825 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 826 }
3280af22 827 op_free(PL_main_root);
5f66b61c 828 PL_main_root = NULL;
a0d0e21e 829 }
5f66b61c 830 PL_main_start = NULL;
aac9d523
DM
831 /* note that PL_main_cv isn't usually actually freed at this point,
832 * due to the CvOUTSIDE refs from subs compiled within it. It will
833 * get freed once all the subs are freed in sv_clean_all(), for
834 * destruct_level > 0 */
3280af22 835 SvREFCNT_dec(PL_main_cv);
601f1833 836 PL_main_cv = NULL;
ca7b837b 837 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 838
13621cfb
NIS
839 /* Tell PerlIO we are about to tear things apart in case
840 we have layers which are using resources that should
841 be cleaned up now.
842 */
843
844 PerlIO_destruct(aTHX);
845
ddf23d4a
SM
846 /*
847 * Try to destruct global references. We do this first so that the
848 * destructors and destructees still exist. Some sv's might remain.
849 * Non-referenced objects are on their own.
850 */
851 sv_clean_objs();
8990e307 852
5cd24f17 853 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 854 SvREFCNT_dec(PL_warnhook);
a0714e2c 855 PL_warnhook = NULL;
3280af22 856 SvREFCNT_dec(PL_diehook);
a0714e2c 857 PL_diehook = NULL;
5cd24f17 858
4b556e6c 859 /* call exit list functions */
3280af22 860 while (PL_exitlistlen-- > 0)
acfe0abc 861 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 862
3280af22 863 Safefree(PL_exitlist);
4b556e6c 864
1c4916e5
CB
865 PL_exitlist = NULL;
866 PL_exitlistlen = 0;
867
a3e6e81e
NC
868 SvREFCNT_dec(PL_registered_mros);
869
551a8b83 870 /* jettison our possibly duplicated environment */
4b647fb0
DM
871 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
872 * so we certainly shouldn't free it here
873 */
2f42fcb0 874#ifndef PERL_MICRO
4b647fb0 875#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 876 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
877#ifdef USE_ITHREADS
878 /* only main thread can free environ[0] contents */
879 && PL_curinterp == aTHX
880#endif
881 )
882 {
551a8b83
JH
883 I32 i;
884
885 for (i = 0; environ[i]; i++)
4b420006 886 safesysfree(environ[i]);
0631ea03 887
4b420006
JH
888 /* Must use safesysfree() when working with environ. */
889 safesysfree(environ);
551a8b83
JH
890
891 environ = PL_origenviron;
892 }
893#endif
2f42fcb0 894#endif /* !PERL_MICRO */
551a8b83 895
30985c42
JH
896 if (destruct_level == 0) {
897
898 DEBUG_P(debprofdump());
899
900#if defined(PERLIO_LAYERS)
901 /* No more IO - including error messages ! */
902 PerlIO_cleanup(aTHX);
903#endif
904
905 CopFILE_free(&PL_compiling);
30985c42
JH
906
907 /* The exit() function will do everything that needs doing. */
908 return STATUS_EXIT;
909 }
910
9fa9f06b
KW
911 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
912
5f8cb046
DM
913#ifdef USE_ITHREADS
914 /* the syntax tree is shared between clones
915 * so op_free(PL_main_root) only ReREFCNT_dec's
916 * REGEXPs in the parent interpreter
917 * we need to manually ReREFCNT_dec for the clones
918 */
0547a729
DM
919 {
920 I32 i = AvFILLp(PL_regex_padav);
921 SV **ary = AvARRAY(PL_regex_padav);
922
923 for (; i; i--) {
924 SvREFCNT_dec(ary[i]);
925 ary[i] = &PL_sv_undef;
926 }
927 }
5f8cb046
DM
928#endif
929
0547a729 930
ad64d0ec 931 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
932 PL_stashcache = NULL;
933
5f05dabc
PP
934 /* loosen bonds of global variables */
935
2f9285f8
DM
936 /* XXX can PL_parser still be non-null here? */
937 if(PL_parser && PL_parser->rsfp) {
938 (void)PerlIO_close(PL_parser->rsfp);
939 PL_parser->rsfp = NULL;
8ebc5c01
PP
940 }
941
84386e14
RGS
942 if (PL_minus_F) {
943 Safefree(PL_splitstr);
944 PL_splitstr = NULL;
945 }
946
8ebc5c01 947 /* switches */
3280af22
NIS
948 PL_minus_n = FALSE;
949 PL_minus_p = FALSE;
950 PL_minus_l = FALSE;
951 PL_minus_a = FALSE;
952 PL_minus_F = FALSE;
953 PL_doswitches = FALSE;
599cee73 954 PL_dowarn = G_WARN_OFF;
1a904fc8 955#ifdef PERL_SAWAMPERSAND
d3b97530 956 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 957#endif
3280af22
NIS
958 PL_unsafe = FALSE;
959
960 Safefree(PL_inplace);
bd61b366 961 PL_inplace = NULL;
a7cb1f99 962 SvREFCNT_dec(PL_patchlevel);
3280af22
NIS
963
964 if (PL_e_script) {
965 SvREFCNT_dec(PL_e_script);
a0714e2c 966 PL_e_script = NULL;
8ebc5c01
PP
967 }
968
bf9cdc68
RG
969 PL_perldb = 0;
970
8ebc5c01
PP
971 /* magical thingies */
972
e23d9e2f
CS
973 SvREFCNT_dec(PL_ofsgv); /* *, */
974 PL_ofsgv = NULL;
5f05dabc 975
7889fe52 976 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 977 PL_ors_sv = NULL;
8ebc5c01 978
3280af22 979 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 980 PL_rs = NULL;
dc92893f 981
d33b2eba 982 Safefree(PL_osname); /* $^O */
bd61b366 983 PL_osname = NULL;
5f05dabc 984
3280af22 985 SvREFCNT_dec(PL_statname);
a0714e2c
SS
986 PL_statname = NULL;
987 PL_statgv = NULL;
5f05dabc 988
8ebc5c01
PP
989 /* defgv, aka *_ should be taken care of elsewhere */
990
7d5ea4e7
GS
991 /* float buffer */
992 Safefree(PL_efloatbuf);
bd61b366 993 PL_efloatbuf = NULL;
7d5ea4e7
GS
994 PL_efloatsize = 0;
995
8ebc5c01 996 /* startup and shutdown function lists */
3280af22 997 SvREFCNT_dec(PL_beginav);
5a837c8f 998 SvREFCNT_dec(PL_beginav_save);
3280af22 999 SvREFCNT_dec(PL_endav);
7d30b5c4 1000 SvREFCNT_dec(PL_checkav);
ece599bd 1001 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
1002 SvREFCNT_dec(PL_unitcheckav);
1003 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 1004 SvREFCNT_dec(PL_initav);
7d49f689
NC
1005 PL_beginav = NULL;
1006 PL_beginav_save = NULL;
1007 PL_endav = NULL;
1008 PL_checkav = NULL;
1009 PL_checkav_save = NULL;
3c10abe3
AG
1010 PL_unitcheckav = NULL;
1011 PL_unitcheckav_save = NULL;
7d49f689 1012 PL_initav = NULL;
5618dfe8 1013
8ebc5c01 1014 /* shortcuts just get cleared */
a0714e2c
SS
1015 PL_hintgv = NULL;
1016 PL_errgv = NULL;
a0714e2c
SS
1017 PL_argvoutgv = NULL;
1018 PL_stdingv = NULL;
1019 PL_stderrgv = NULL;
1020 PL_last_in_gv = NULL;
a0714e2c
SS
1021 PL_DBsingle = NULL;
1022 PL_DBtrace = NULL;
1023 PL_DBsignal = NULL;
a6d69523
TC
1024 PL_DBsingle_iv = 0;
1025 PL_DBtrace_iv = 0;
1026 PL_DBsignal_iv = 0;
601f1833 1027 PL_DBcv = NULL;
7d49f689 1028 PL_dbargs = NULL;
5c284bb0 1029 PL_debstash = NULL;
8ebc5c01 1030
cf93a474 1031 SvREFCNT_dec(PL_envgv);
f03015cd 1032 SvREFCNT_dec(PL_incgv);
722fa0e9 1033 SvREFCNT_dec(PL_argvgv);
475b1e90 1034 SvREFCNT_dec(PL_replgv);
8cece913
FC
1035 SvREFCNT_dec(PL_DBgv);
1036 SvREFCNT_dec(PL_DBline);
1037 SvREFCNT_dec(PL_DBsub);
cf93a474 1038 PL_envgv = NULL;
f03015cd 1039 PL_incgv = NULL;
722fa0e9 1040 PL_argvgv = NULL;
475b1e90 1041 PL_replgv = NULL;
8cece913
FC
1042 PL_DBgv = NULL;
1043 PL_DBline = NULL;
1044 PL_DBsub = NULL;
1045
7a1c5554 1046 SvREFCNT_dec(PL_argvout_stack);
7d49f689 1047 PL_argvout_stack = NULL;
8ebc5c01 1048
5c831c24 1049 SvREFCNT_dec(PL_modglobal);
5c284bb0 1050 PL_modglobal = NULL;
5c831c24 1051 SvREFCNT_dec(PL_preambleav);
7d49f689 1052 PL_preambleav = NULL;
5c831c24 1053 SvREFCNT_dec(PL_subname);
a0714e2c 1054 PL_subname = NULL;
ca0c25f6 1055#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1056 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1057 PL_pidstatus = NULL;
ca0c25f6 1058#endif
5c831c24 1059 SvREFCNT_dec(PL_toptarget);
a0714e2c 1060 PL_toptarget = NULL;
5c831c24 1061 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1062 PL_bodytarget = NULL;
1063 PL_formtarget = NULL;
5c831c24 1064
d33b2eba 1065 /* free locale stuff */
b9582b6a 1066#ifdef USE_LOCALE_COLLATE
d33b2eba 1067 Safefree(PL_collation_name);
bd61b366 1068 PL_collation_name = NULL;
b9582b6a 1069#endif
d33b2eba 1070
b9582b6a 1071#ifdef USE_LOCALE_NUMERIC
d33b2eba 1072 Safefree(PL_numeric_name);
bd61b366 1073 PL_numeric_name = NULL;
a453c169 1074 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1075 PL_numeric_radix_sv = NULL;
b9582b6a 1076#endif
d33b2eba 1077
9c0b6888
KW
1078 /* clear character classes */
1079 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1080 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1081 PL_utf8_swash_ptrs[i] = NULL;
1082 }
5c831c24
GS
1083 SvREFCNT_dec(PL_utf8_mark);
1084 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1085 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1086 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1087 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1088 SvREFCNT_dec(PL_utf8_idstart);
1089 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1090 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1091 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b 1092 SvREFCNT_dec(PL_AboveLatin1);
e0a1ff7a 1093 SvREFCNT_dec(PL_InBitmap);
9fa9f06b
KW
1094 SvREFCNT_dec(PL_UpperLatin1);
1095 SvREFCNT_dec(PL_Latin1);
1096 SvREFCNT_dec(PL_NonL1NonFinalFold);
1097 SvREFCNT_dec(PL_HasMultiCharFold);
5b7de470 1098#ifdef USE_LOCALE_CTYPE
780fcc9f 1099 SvREFCNT_dec(PL_warn_locale);
5b7de470 1100#endif
a0714e2c
SS
1101 PL_utf8_mark = NULL;
1102 PL_utf8_toupper = NULL;
1103 PL_utf8_totitle = NULL;
1104 PL_utf8_tolower = NULL;
1105 PL_utf8_tofold = NULL;
1106 PL_utf8_idstart = NULL;
1107 PL_utf8_idcont = NULL;
2726813d 1108 PL_utf8_foldclosures = NULL;
9fa9f06b 1109 PL_AboveLatin1 = NULL;
e0a1ff7a 1110 PL_InBitmap = NULL;
9fa9f06b 1111 PL_HasMultiCharFold = NULL;
5b7de470 1112#ifdef USE_LOCALE_CTYPE
780fcc9f 1113 PL_warn_locale = NULL;
5b7de470 1114#endif
9fa9f06b
KW
1115 PL_Latin1 = NULL;
1116 PL_NonL1NonFinalFold = NULL;
1117 PL_UpperLatin1 = NULL;
86f72d56 1118 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1119 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1120 PL_XPosix_ptrs[i] = NULL;
86f72d56 1121 }
64935bc6 1122 PL_GCB_invlist = NULL;
6b659339 1123 PL_LB_invlist = NULL;
06ae2722 1124 PL_SB_invlist = NULL;
ae3bb8ea 1125 PL_WB_invlist = NULL;
5c831c24 1126
971a9dd3 1127 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1128 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1129 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1130 cophh_free(CopHINTHASH_get(&PL_compiling));
1131 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1132 CopFILE_free(&PL_compiling);
5c831c24 1133
a0d0e21e 1134 /* Prepare to destruct main symbol table. */
5f05dabc 1135
3280af22 1136 hv = PL_defstash;
ca556bcd
DM
1137 /* break ref loop *:: <=> %:: */
1138 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1139 PL_defstash = 0;
a0d0e21e 1140 SvREFCNT_dec(hv);
5c831c24 1141 SvREFCNT_dec(PL_curstname);
a0714e2c 1142 PL_curstname = NULL;
a0d0e21e 1143
5a844595
GS
1144 /* clear queued errors */
1145 SvREFCNT_dec(PL_errors);
a0714e2c 1146 PL_errors = NULL;
5a844595 1147
dd69841b
BB
1148 SvREFCNT_dec(PL_isarev);
1149
a0d0e21e 1150 FREETMPS;
9b387841 1151 if (destruct_level >= 2) {
3280af22 1152 if (PL_scopestack_ix != 0)
9b387841
NC
1153 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1154 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1155 (long)PL_scopestack_ix);
3280af22 1156 if (PL_savestack_ix != 0)
9b387841
NC
1157 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1158 "Unbalanced saves: %ld more saves than restores\n",
1159 (long)PL_savestack_ix);
3280af22 1160 if (PL_tmps_floor != -1)
9b387841
NC
1161 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1162 (long)PL_tmps_floor + 1);
a0d0e21e 1163 if (cxstack_ix != -1)
9b387841
NC
1164 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1165 (long)cxstack_ix + 1);
a0d0e21e 1166 }
8990e307 1167
0547a729
DM
1168#ifdef USE_ITHREADS
1169 SvREFCNT_dec(PL_regex_padav);
1170 PL_regex_padav = NULL;
1171 PL_regex_pad = NULL;
1172#endif
1173
776df701 1174#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1175 /* the entries in this list are allocated via SV PVX's, so get freed
1176 * in sv_clean_all */
1177 Safefree(PL_my_cxt_list);
776df701 1178#endif
57bb2458 1179
8990e307 1180 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1181
1182 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1183 while (sv_clean_all() > 2)
5226ed68
JH
1184 ;
1185
23083432
FC
1186#ifdef USE_ITHREADS
1187 Safefree(PL_stashpad); /* must come after sv_clean_all */
1188#endif
1189
d4777f27
GS
1190 AvREAL_off(PL_fdpid); /* no surviving entries */
1191 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1192 PL_fdpid = NULL;
d33b2eba 1193
6c644e78
GS
1194#ifdef HAVE_INTERP_INTERN
1195 sys_intern_clear();
1196#endif
1197
a38ab475
RZ
1198 /* constant strings */
1199 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1200 SvREFCNT_dec(PL_sv_consts[i]);
1201 PL_sv_consts[i] = NULL;
1202 }
1203
6e72f9df
PP
1204 /* Destruct the global string table. */
1205 {
1206 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1207 * so that sv_free() won't fail on them.
80459961
NC
1208 * Now that the global string table is using a single hunk of memory
1209 * for both HE and HEK, we either need to explicitly unshare it the
1210 * correct way, or actually free things here.
6e72f9df 1211 */
80459961
NC
1212 I32 riter = 0;
1213 const I32 max = HvMAX(PL_strtab);
c4420975 1214 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1215 HE *hent = array[0];
1216
6e72f9df 1217 for (;;) {
0453d815 1218 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1219 HE * const next = HeNEXT(hent);
9014280d 1220 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1221 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1222 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1223 Safefree(hent);
1224 hent = next;
6e72f9df
PP
1225 }
1226 if (!hent) {
1227 if (++riter > max)
1228 break;
1229 hent = array[riter];
1230 }
1231 }
80459961
NC
1232
1233 Safefree(array);
1234 HvARRAY(PL_strtab) = 0;
1235 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1236 }
3280af22 1237 SvREFCNT_dec(PL_strtab);
6e72f9df 1238
e652bb2f 1239#ifdef USE_ITHREADS
c21d1a0f 1240 /* free the pointer tables used for cloning */
a0739874 1241 ptr_table_free(PL_ptr_table);
bf9cdc68 1242 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1243#endif
a0739874 1244
d33b2eba
GS
1245 /* free special SVs */
1246
1247 SvREFCNT(&PL_sv_yes) = 0;
1248 sv_clear(&PL_sv_yes);
1249 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1250 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1251
1252 SvREFCNT(&PL_sv_no) = 0;
1253 sv_clear(&PL_sv_no);
1254 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1255 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1256
9f375a43
DM
1257 {
1258 int i;
1259 for (i=0; i<=2; i++) {
1260 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1261 sv_clear(PERL_DEBUG_PAD(i));
1262 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1263 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1264 }
1265 }
1266
0453d815 1267 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1268 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1269
eba0f806
DM
1270#ifdef DEBUG_LEAKING_SCALARS
1271 if (PL_sv_count != 0) {
1272 SV* sva;
1273 SV* sv;
eb578fdb 1274 SV* svend;
eba0f806 1275
ad64d0ec 1276 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1277 svend = &sva[SvREFCNT(sva)];
1278 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1279 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1280 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1281 " flags=0x%"UVxf
fd0854ff 1282 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1283 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1284 "serial %"UVuf"\n",
574b8821
NC
1285 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1286 pTHX__VALUE,
fd0854ff
DM
1287 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1288 sv->sv_debug_line,
1289 sv->sv_debug_inpad ? "for" : "by",
1290 sv->sv_debug_optype ?
1291 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1292 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1293 sv->sv_debug_serial
fd0854ff 1294 );
2aa47728 1295#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1296 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1297#endif
eba0f806
DM
1298 }
1299 }
1300 }
1301 }
2aa47728
NC
1302#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1303 {
1304 int status;
1305 fd_set rset;
1306 /* Wait for up to 4 seconds for child to terminate.
1307 This seems to be the least effort way of timing out on reaping
1308 its exit status. */
1309 struct timeval waitfor = {4, 0};
41e4abd8 1310 int sock = PL_dumper_fd;
2aa47728
NC
1311
1312 shutdown(sock, 1);
1313 FD_ZERO(&rset);
1314 FD_SET(sock, &rset);
1315 select(sock + 1, &rset, NULL, NULL, &waitfor);
1316 waitpid(child, &status, WNOHANG);
1317 close(sock);
1318 }
1319#endif
eba0f806 1320#endif
77abb4c6
NC
1321#ifdef DEBUG_LEAKING_SCALARS_ABORT
1322 if (PL_sv_count)
1323 abort();
1324#endif
bf9cdc68 1325 PL_sv_count = 0;
eba0f806 1326
56a2bab7 1327#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1328 /* No more IO - including error messages ! */
1329 PerlIO_cleanup(aTHX);
1330#endif
1331
9f4bd222 1332 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1333 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1334 for no arg - and will try and SvREFCNT_dec it.
1335 */
1336 SvREFCNT(&PL_sv_undef) = 0;
1337 SvREADONLY_off(&PL_sv_undef);
1338
3280af22 1339 Safefree(PL_origfilename);
bd61b366 1340 PL_origfilename = NULL;
43c5f42d 1341 Safefree(PL_reg_curpm);
dd28f7bb 1342 free_tied_hv_pool();
3280af22 1343 Safefree(PL_op_mask);
cf36064f 1344 Safefree(PL_psig_name);
bf9cdc68 1345 PL_psig_name = (SV**)NULL;
d525a7b2 1346 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1347 {
1348 /* We need to NULL PL_psig_pend first, so that
1349 signal handlers know not to use it */
1350 int *psig_save = PL_psig_pend;
1351 PL_psig_pend = (int*)NULL;
1352 Safefree(psig_save);
1353 }
6e72f9df 1354 nuke_stacks();
284167a5
SM
1355 TAINTING_set(FALSE);
1356 TAINT_WARN_set(FALSE);
3280af22 1357 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
ac27b0f5 1358
a0d0e21e 1359 DEBUG_P(debprofdump());
d33b2eba 1360
b173165c
FC
1361 PL_debug = 0;
1362
e5dd39fc 1363#ifdef USE_REENTRANT_API
10bc17b6 1364 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1365#endif
1366
a24da70b
NC
1367 /* These all point to HVs that are about to be blown away.
1368 Code in core and on CPAN assumes that if the interpreter is re-started
1369 that they will be cleanly NULL or pointing to a valid HV. */
1370 PL_custom_op_names = NULL;
1371 PL_custom_op_descs = NULL;
1372 PL_custom_ops = NULL;
1373
612f20c3
GS
1374 sv_free_arenas();
1375
5d9a96ca
DM
1376 while (PL_regmatch_slab) {
1377 regmatch_slab *s = PL_regmatch_slab;
1378 PL_regmatch_slab = PL_regmatch_slab->next;
1379 Safefree(s);
1380 }
1381
fc36a67e
PP
1382 /* As the absolutely last thing, free the non-arena SV for mess() */
1383
3280af22 1384 if (PL_mess_sv) {
f350b448
NC
1385 /* we know that type == SVt_PVMG */
1386
9c63abab 1387 /* it could have accumulated taint magic */
f350b448
NC
1388 MAGIC* mg;
1389 MAGIC* moremagic;
1390 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1391 moremagic = mg->mg_moremagic;
1392 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1393 && mg->mg_len >= 0)
1394 Safefree(mg->mg_ptr);
1395 Safefree(mg);
9c63abab 1396 }
f350b448 1397
fc36a67e 1398 /* we know that type >= SVt_PV */
8bd4d4c5 1399 SvPV_free(PL_mess_sv);
3280af22
NIS
1400 Safefree(SvANY(PL_mess_sv));
1401 Safefree(PL_mess_sv);
a0714e2c 1402 PL_mess_sv = NULL;
fc36a67e 1403 }
37038d91 1404 return STATUS_EXIT;
79072805
LW
1405}
1406
954c1994
GS
1407/*
1408=for apidoc perl_free
1409
1410Releases a Perl interpreter. See L<perlembed>.
1411
1412=cut
1413*/
1414
79072805 1415void
0cb96387 1416perl_free(pTHXx)
79072805 1417{
5174512c
NC
1418 dVAR;
1419
7918f24d
NC
1420 PERL_ARGS_ASSERT_PERL_FREE;
1421
c301d606
DM
1422 if (PL_veto_cleanup)
1423 return;
1424
7cb608b5 1425#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1426 {
1427 /*
1428 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1429 * value as we're probably hunting memory leaks then
1430 */
36e77d41 1431 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1432 const U32 old_debug = PL_debug;
55ef9aae
MHM
1433 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1434 thread at thread exit. */
4fd0a9b8
NC
1435 if (DEBUG_m_TEST) {
1436 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1437 "free this thread's memory\n");
1438 PL_debug &= ~ DEBUG_m_FLAG;
1439 }
6edcbed6
DD
1440 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header)){
1441 char * next = (char *)(aTHXx->Imemory_debug_header.next);
1442 Malloc_t ptr = PERL_MEMORY_DEBUG_HEADER_SIZE + next;
1443 safesysfree(ptr);
1444 }
4fd0a9b8 1445 PL_debug = old_debug;
55ef9aae
MHM
1446 }
1447 }
7cb608b5
NC
1448#endif
1449
acfe0abc 1450#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1451# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1452 {
acfe0abc 1453# ifdef NETWARE
7af12a34 1454 void *host = nw_internal_host;
7af12a34 1455 PerlMem_free(aTHXx);
7af12a34 1456 nw_delete_internal_host(host);
acfe0abc 1457# else
bdb50480
NC
1458 void *host = w32_internal_host;
1459 PerlMem_free(aTHXx);
7af12a34 1460 win32_delete_internal_host(host);
acfe0abc 1461# endif
7af12a34 1462 }
1c0ca838
GS
1463# else
1464 PerlMem_free(aTHXx);
1465# endif
acfe0abc
GS
1466#else
1467 PerlMem_free(aTHXx);
76e3520e 1468#endif
79072805
LW
1469}
1470
b7f7fff6 1471#if defined(USE_ITHREADS)
aebd1ac7
GA
1472/* provide destructors to clean up the thread key when libperl is unloaded */
1473#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1474
826955bd 1475#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1476#pragma fini "perl_fini"
666ad1ec
GA
1477#elif defined(__sun) && !defined(__GNUC__)
1478#pragma fini (perl_fini)
aebd1ac7
GA
1479#endif
1480
0dbb1585
AL
1481static void
1482#if defined(__GNUC__)
1483__attribute__((destructor))
aebd1ac7 1484#endif
de009b76 1485perl_fini(void)
aebd1ac7 1486{
27da23d5 1487 dVAR;
5c64bffd
NC
1488 if (
1489#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1490 my_vars &&
1491#endif
1492 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1493 FREE_THREAD_KEY;
1494}
1495
1496#endif /* WIN32 */
1497#endif /* THREADS */
1498
4b556e6c 1499void
864dbfa3 1500Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1501{
3280af22
NIS
1502 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1503 PL_exitlist[PL_exitlistlen].fn = fn;
1504 PL_exitlist[PL_exitlistlen].ptr = ptr;
1505 ++PL_exitlistlen;
4b556e6c
JD
1506}
1507
954c1994
GS
1508/*
1509=for apidoc perl_parse
1510
1511Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1512
1513=cut
1514*/
1515
03d9f026
FC
1516#define SET_CURSTASH(newstash) \
1517 if (PL_curstash != newstash) { \
1518 SvREFCNT_dec(PL_curstash); \
1519 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1520 }
1521
79072805 1522int
0cb96387 1523perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1524{
27da23d5 1525 dVAR;
6224f72b 1526 I32 oldscope;
6224f72b 1527 int ret;
db36c5a1 1528 dJMPENV;
8d063cd8 1529
7918f24d
NC
1530 PERL_ARGS_ASSERT_PERL_PARSE;
1531#ifndef MULTIPLICITY
ed6c66dd 1532 PERL_UNUSED_ARG(my_perl);
7918f24d 1533#endif
7dc86639 1534#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1535 {
7dc86639
YO
1536 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1537
22ff3130 1538 if (s && strEQ(s, "1")) {
25c1b134
TC
1539 const unsigned char *seed= PERL_HASH_SEED;
1540 const unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
7dc86639
YO
1541 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1542 while (seed < seed_end) {
1543 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1544 }
6a5b4183
YO
1545#ifdef PERL_HASH_RANDOMIZE_KEYS
1546 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1547 PL_HASH_RAND_BITS_ENABLED,
1548 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1549#endif
7dc86639
YO
1550 PerlIO_printf(Perl_debug_log, "\n");
1551 }
b0891165
JH
1552 }
1553#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
43238333 1554
ea34f6bd 1555#ifdef __amigaos4__
43238333
AB
1556 {
1557 struct NameTranslationInfo nti;
1558 __translate_amiga_to_unix_path_name(&argv[0],&nti);
1559 }
1560#endif
1561
3280af22 1562 PL_origargc = argc;
e2975953 1563 PL_origargv = argv;
a0d0e21e 1564
a2722ac9
GA
1565 if (PL_origalen != 0) {
1566 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1567 }
1568 else {
3cb9023d
JH
1569 /* Set PL_origalen be the sum of the contiguous argv[]
1570 * elements plus the size of the env in case that it is
e9137a8e 1571 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1572 * as the maximum modifiable length of $0. In the worst case
1573 * the area we are able to modify is limited to the size of
43c32782 1574 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1575 * --jhi */
e1ec3a88 1576 const char *s = NULL;
54bfe034 1577 int i;
b7249aaf 1578 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1579 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1580 const UV aligned =
43c32782
JH
1581 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1582
1583 /* See if all the arguments are contiguous in memory. Note
1584 * that 'contiguous' is a loose term because some platforms
1585 * align the argv[] and the envp[]. If the arguments look
1586 * like non-aligned, assume that they are 'strictly' or
1587 * 'traditionally' contiguous. If the arguments look like
1588 * aligned, we just check that they are within aligned
1589 * PTRSIZE bytes. As long as no system has something bizarre
1590 * like the argv[] interleaved with some other data, we are
1591 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1592 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1593 while (*s) s++;
1594 for (i = 1; i < PL_origargc; i++) {
1595 if ((PL_origargv[i] == s + 1
43c32782 1596#ifdef OS2
c8941eeb 1597 || PL_origargv[i] == s + 2
43c32782 1598#endif
c8941eeb
JH
1599 )
1600 ||
1601 (aligned &&
1602 (PL_origargv[i] > s &&
1603 PL_origargv[i] <=
1604 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1605 )
1606 {
1607 s = PL_origargv[i];
1608 while (*s) s++;
1609 }
1610 else
1611 break;
54bfe034 1612 }
54bfe034 1613 }
a4a109c2
JD
1614
1615#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1616 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1617 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1618 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1619 ||
1620 (aligned &&
1621 (PL_origenviron[0] > s &&
1622 PL_origenviron[0] <=
1623 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1624 )
1625 {
9d419b5f 1626#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1627 s = PL_origenviron[0];
1628 while (*s) s++;
1629#endif
bd61b366 1630 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1631 /* Force copy of environment. */
1632 for (i = 1; PL_origenviron[i]; i++) {
1633 if (PL_origenviron[i] == s + 1
1634 ||
1635 (aligned &&
1636 (PL_origenviron[i] > s &&
1637 PL_origenviron[i] <=
1638 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1639 )
1640 {
1641 s = PL_origenviron[i];
1642 while (*s) s++;
1643 }
1644 else
1645 break;
54bfe034 1646 }
43c32782 1647 }
54bfe034 1648 }
a4a109c2
JD
1649#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1650
2d2af554 1651 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1652 }
1653
3280af22 1654 if (PL_do_undump) {
a0d0e21e
LW
1655
1656 /* Come here if running an undumped a.out. */
1657
3280af22
NIS
1658 PL_origfilename = savepv(argv[0]);
1659 PL_do_undump = FALSE;
a0d0e21e 1660 cxstack_ix = -1; /* start label stack again */
748a9306 1661 init_ids();
284167a5 1662 assert (!TAINT_get);
b7975bdd 1663 TAINT;
e2051532 1664 set_caret_X();
b7975bdd 1665 TAINT_NOT;
a0d0e21e
LW
1666 init_postdump_symbols(argc,argv,env);
1667 return 0;
1668 }
1669
3280af22 1670 if (PL_main_root) {
3280af22 1671 op_free(PL_main_root);
5f66b61c 1672 PL_main_root = NULL;
ff0cee69 1673 }
5f66b61c 1674 PL_main_start = NULL;
3280af22 1675 SvREFCNT_dec(PL_main_cv);
601f1833 1676 PL_main_cv = NULL;
79072805 1677
3280af22
NIS
1678 time(&PL_basetime);
1679 oldscope = PL_scopestack_ix;
599cee73 1680 PL_dowarn = G_WARN_OFF;
f86702cc 1681
14dd3ad8 1682 JMPENV_PUSH(ret);
6224f72b 1683 switch (ret) {
312caa8e 1684 case 0:
14dd3ad8 1685 parse_body(env,xsinit);
9ebf26ad 1686 if (PL_unitcheckav) {
3c10abe3 1687 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1688 }
1689 if (PL_checkav) {
ca7b837b 1690 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1691 call_list(oldscope, PL_checkav);
9ebf26ad 1692 }
14dd3ad8
GS
1693 ret = 0;
1694 break;
6224f72b
GS
1695 case 1:
1696 STATUS_ALL_FAILURE;
924ba076 1697 /* FALLTHROUGH */
6224f72b
GS
1698 case 2:
1699 /* my_exit() was called */
3280af22 1700 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1701 LEAVE;
1702 FREETMPS;
03d9f026 1703 SET_CURSTASH(PL_defstash);
9ebf26ad 1704 if (PL_unitcheckav) {
3c10abe3 1705 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1706 }
1707 if (PL_checkav) {
ca7b837b 1708 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1709 call_list(oldscope, PL_checkav);
9ebf26ad 1710 }
37038d91 1711 ret = STATUS_EXIT;
14dd3ad8 1712 break;
6224f72b 1713 case 3:
bf49b057 1714 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1715 ret = 1;
1716 break;
6224f72b 1717 }
14dd3ad8
GS
1718 JMPENV_POP;
1719 return ret;
1720}
1721
4a5df386
NC
1722/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1723 miniperl, and we need to see those flags reflected in the values here. */
1724
1725/* What this returns is subject to change. Use the public interface in Config.
1726 */
1727static void
1728S_Internals_V(pTHX_ CV *cv)
1729{
1730 dXSARGS;
1731#ifdef LOCAL_PATCH_COUNT
1732 const int local_patch_count = LOCAL_PATCH_COUNT;
1733#else
1734 const int local_patch_count = 0;
1735#endif
2dc296d2 1736 const int entries = 3 + local_patch_count;
4a5df386 1737 int i;
fe1c5936 1738 static const char non_bincompat_options[] =
4a5df386
NC
1739# ifdef DEBUGGING
1740 " DEBUGGING"
1741# endif
1742# ifdef NO_MATHOMS
0d311fbe 1743 " NO_MATHOMS"
4a5df386 1744# endif
59b86f4b
DM
1745# ifdef NO_HASH_SEED
1746 " NO_HASH_SEED"
1747# endif
3b0e4ee2
MB
1748# ifdef NO_TAINT_SUPPORT
1749 " NO_TAINT_SUPPORT"
1750# endif
cb26ef7a
MB
1751# ifdef PERL_BOOL_AS_CHAR
1752 " PERL_BOOL_AS_CHAR"
1753# endif
93c10d60
FC
1754# ifdef PERL_COPY_ON_WRITE
1755 " PERL_COPY_ON_WRITE"
1756# endif
4a5df386
NC
1757# ifdef PERL_DISABLE_PMC
1758 " PERL_DISABLE_PMC"
1759# endif
1760# ifdef PERL_DONT_CREATE_GVSV
1761 " PERL_DONT_CREATE_GVSV"
1762# endif
9a044a43
NC
1763# ifdef PERL_EXTERNAL_GLOB
1764 " PERL_EXTERNAL_GLOB"
1765# endif
59b86f4b
DM
1766# ifdef PERL_HASH_FUNC_SIPHASH
1767 " PERL_HASH_FUNC_SIPHASH"
1768# endif
1769# ifdef PERL_HASH_FUNC_SDBM
1770 " PERL_HASH_FUNC_SDBM"
1771# endif
1772# ifdef PERL_HASH_FUNC_DJB2
1773 " PERL_HASH_FUNC_DJB2"
1774# endif
1775# ifdef PERL_HASH_FUNC_SUPERFAST
1776 " PERL_HASH_FUNC_SUPERFAST"
1777# endif
1778# ifdef PERL_HASH_FUNC_MURMUR3
1779 " PERL_HASH_FUNC_MURMUR3"
1780# endif
1781# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1782 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1783# endif
1784# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1785 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1786# endif
1787# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1788 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1789# endif
4a5df386
NC
1790# ifdef PERL_IS_MINIPERL
1791 " PERL_IS_MINIPERL"
1792# endif
1793# ifdef PERL_MALLOC_WRAP
1794 " PERL_MALLOC_WRAP"
1795# endif
1796# ifdef PERL_MEM_LOG
1797 " PERL_MEM_LOG"
1798# endif
1799# ifdef PERL_MEM_LOG_NOIMPL
1800 " PERL_MEM_LOG_NOIMPL"
1801# endif
4e499636
DM
1802# ifdef PERL_OP_PARENT
1803 " PERL_OP_PARENT"
1804# endif
59b86f4b
DM
1805# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1806 " PERL_PERTURB_KEYS_DETERMINISTIC"
1807# endif
1808# ifdef PERL_PERTURB_KEYS_DISABLED
1809 " PERL_PERTURB_KEYS_DISABLED"
1810# endif
1811# ifdef PERL_PERTURB_KEYS_RANDOM
1812 " PERL_PERTURB_KEYS_RANDOM"
1813# endif
c3cf41ec
NC
1814# ifdef PERL_PRESERVE_IVUV
1815 " PERL_PRESERVE_IVUV"
1816# endif
c051e30b
NC
1817# ifdef PERL_RELOCATABLE_INCPUSH
1818 " PERL_RELOCATABLE_INCPUSH"
1819# endif
4a5df386
NC
1820# ifdef PERL_USE_DEVEL
1821 " PERL_USE_DEVEL"
1822# endif
1823# ifdef PERL_USE_SAFE_PUTENV
1824 " PERL_USE_SAFE_PUTENV"
1825# endif
102b7877
YO
1826# ifdef SILENT_NO_TAINT_SUPPORT
1827 " SILENT_NO_TAINT_SUPPORT"
1828# endif
a3749cf3
NC
1829# ifdef UNLINK_ALL_VERSIONS
1830 " UNLINK_ALL_VERSIONS"
1831# endif
de618ee4
NC
1832# ifdef USE_ATTRIBUTES_FOR_PERLIO
1833 " USE_ATTRIBUTES_FOR_PERLIO"
1834# endif
4a5df386
NC
1835# ifdef USE_FAST_STDIO
1836 " USE_FAST_STDIO"
1837# endif
59b86f4b
DM
1838# ifdef USE_HASH_SEED_EXPLICIT
1839 " USE_HASH_SEED_EXPLICIT"
1840# endif
98548bdf
NC
1841# ifdef USE_LOCALE
1842 " USE_LOCALE"
1843# endif
98548bdf
NC
1844# ifdef USE_LOCALE_CTYPE
1845 " USE_LOCALE_CTYPE"
1846# endif
6937817d
DD
1847# ifdef WIN32_NO_REGISTRY
1848 " USE_NO_REGISTRY"
1849# endif
5a8d8935
NC
1850# ifdef USE_PERL_ATOF
1851 " USE_PERL_ATOF"
1852# endif
0d311fbe
NC
1853# ifdef USE_SITECUSTOMIZE
1854 " USE_SITECUSTOMIZE"
1855# endif
4a5df386
NC
1856 ;
1857 PERL_UNUSED_ARG(cv);
d3db1514 1858 PERL_UNUSED_VAR(items);
4a5df386
NC
1859
1860 EXTEND(SP, entries);
1861
1862 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1863 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1864 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1865
6baa8dbd
NT
1866#ifndef PERL_BUILD_DATE
1867# ifdef __DATE__
1868# ifdef __TIME__
1869# define PERL_BUILD_DATE __DATE__ " " __TIME__
1870# else
1871# define PERL_BUILD_DATE __DATE__
1872# endif
1873# endif
1874#endif
1875
1876#ifdef PERL_BUILD_DATE
4a5df386 1877 PUSHs(Perl_newSVpvn_flags(aTHX_
6baa8dbd 1878 STR_WITH_LEN("Compiled at " PERL_BUILD_DATE),
4a5df386 1879 SVs_TEMP));
4a5df386
NC
1880#else
1881 PUSHs(&PL_sv_undef);
1882#endif
1883
4a5df386
NC
1884 for (i = 1; i <= local_patch_count; i++) {
1885 /* This will be an undef, if PL_localpatches[i] is NULL. */
1886 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1887 }
1888
1889 XSRETURN(entries);
1890}
1891
be71fc8f
NC
1892#define INCPUSH_UNSHIFT 0x01
1893#define INCPUSH_ADD_OLD_VERS 0x02
1894#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1895#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1896#define INCPUSH_NOT_BASEDIR 0x10
1897#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1898#define INCPUSH_ADD_SUB_DIRS \
1899 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1900
312caa8e 1901STATIC void *
14dd3ad8 1902S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1903{
27da23d5 1904 dVAR;
2f9285f8 1905 PerlIO *rsfp;
312caa8e 1906 int argc = PL_origargc;
8f42b153 1907 char **argv = PL_origargv;
e1ec3a88 1908 const char *scriptname = NULL;
402582ca 1909 bool dosearch = FALSE;
eb578fdb 1910 char c;
737c24fc 1911 bool doextract = FALSE;
bd61b366 1912 const char *cddir = NULL;
ab019eaa 1913#ifdef USE_SITECUSTOMIZE
20ef40cf 1914 bool minus_f = FALSE;
ab019eaa 1915#endif
95670bde 1916 SV *linestr_sv = NULL;
5486870f 1917 bool add_read_e_script = FALSE;
87606032 1918 U32 lex_start_flags = 0;
009d90df 1919
ca7b837b 1920 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1921
6224f72b 1922 init_main_stash();
54310121 1923
c7030b81
NC
1924 {
1925 const char *s;
6224f72b
GS
1926 for (argc--,argv++; argc > 0; argc--,argv++) {
1927 if (argv[0][0] != '-' || !argv[0][1])
1928 break;
6224f72b
GS
1929 s = argv[0]+1;
1930 reswitch:
47f56822 1931 switch ((c = *s)) {
729a02f2 1932 case 'C':
1d5472a9
GS
1933#ifndef PERL_STRICT_CR
1934 case '\r':
1935#endif
6224f72b
GS
1936 case ' ':
1937 case '0':
1938 case 'F':
1939 case 'a':
1940 case 'c':
1941 case 'd':
1942 case 'D':
1943 case 'h':
1944 case 'i':
1945 case 'l':
1946 case 'M':
1947 case 'm':
1948 case 'n':
1949 case 'p':
1950 case 's':
1951 case 'u':
1952 case 'U':
1953 case 'v':
599cee73
PM
1954 case 'W':
1955 case 'X':
6224f72b 1956 case 'w':
97bd5664 1957 if ((s = moreswitches(s)))
6224f72b
GS
1958 goto reswitch;
1959 break;
33b78306 1960
1dbad523 1961 case 't':
dc6d7f5c 1962#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1963 /* silently ignore */
dc6d7f5c 1964#elif defined(NO_TAINT_SUPPORT)
3231f579 1965 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1966 "Cowardly refusing to run with -t or -T flags");
1967#else
22f7c9c9 1968 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1969 if( !TAINTING_get ) {
1970 TAINT_WARN_set(TRUE);
1971 TAINTING_set(TRUE);
317ea90d 1972 }
284167a5 1973#endif
317ea90d
MS
1974 s++;
1975 goto reswitch;
6224f72b 1976 case 'T':
dc6d7f5c 1977#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1978 /* silently ignore */
dc6d7f5c 1979#elif defined(NO_TAINT_SUPPORT)
3231f579 1980 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1981 "Cowardly refusing to run with -t or -T flags");
1982#else
22f7c9c9 1983 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1984 TAINTING_set(TRUE);
1985 TAINT_WARN_set(FALSE);
1986#endif
6224f72b
GS
1987 s++;
1988 goto reswitch;
f86702cc 1989
bc9b29db
RH
1990 case 'E':
1991 PL_minus_E = TRUE;
924ba076 1992 /* FALLTHROUGH */
6224f72b 1993 case 'e':
f20b2998 1994 forbid_setid('e', FALSE);
3280af22 1995 if (!PL_e_script) {
396482e1 1996 PL_e_script = newSVpvs("");
5486870f 1997 add_read_e_script = TRUE;
6224f72b
GS
1998 }
1999 if (*++s)
3280af22 2000 sv_catpv(PL_e_script, s);
6224f72b 2001 else if (argv[1]) {
3280af22 2002 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
2003 argc--,argv++;
2004 }
2005 else
47f56822 2006 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 2007 sv_catpvs(PL_e_script, "\n");
6224f72b 2008 break;
afe37c7d 2009
20ef40cf 2010 case 'f':
f5542d3a 2011#ifdef USE_SITECUSTOMIZE
20ef40cf 2012 minus_f = TRUE;
f5542d3a 2013#endif
20ef40cf
GA
2014 s++;
2015 goto reswitch;
2016
6224f72b 2017 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 2018 forbid_setid('I', FALSE);
bd61b366 2019 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
2020 argc--,argv++;
2021 }
6224f72b 2022 if (s && *s) {
0df16ed7 2023 STRLEN len = strlen(s);
55b4bc1c 2024 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
2025 }
2026 else
a67e862a 2027 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 2028 break;
6224f72b 2029 case 'S':
f20b2998 2030 forbid_setid('S', FALSE);
6224f72b
GS
2031 dosearch = TRUE;
2032 s++;
2033 goto reswitch;
2034 case 'V':
7edfd0ef
NC
2035 {
2036 SV *opts_prog;
2037
7edfd0ef 2038 if (*++s != ':') {
37ca4a5b 2039 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
2040 }
2041 else {
2042 ++s;
2043 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 2044 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
2045 0, s, 0);
2046 s += strlen(s);
2047 }
37ca4a5b 2048 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
2049 /* don't look for script or read stdin */
2050 scriptname = BIT_BUCKET;
2051 goto reswitch;
6224f72b 2052 }
6224f72b 2053 case 'x':
737c24fc 2054 doextract = TRUE;
6224f72b 2055 s++;
304334da 2056 if (*s)
f4c556ac 2057 cddir = s;
6224f72b
GS
2058 break;
2059 case 0:
2060 break;
2061 case '-':
2062 if (!*++s || isSPACE(*s)) {
2063 argc--,argv++;
2064 goto switch_end;
2065 }
ee8bc8b7
NC
2066 /* catch use of gnu style long options.
2067 Both of these exit immediately. */
2068 if (strEQ(s, "version"))
2069 minus_v();
2070 if (strEQ(s, "help"))
2071 usage();
6224f72b 2072 s--;
924ba076 2073 /* FALLTHROUGH */
6224f72b 2074 default:
cea2e8a9 2075 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
2076 }
2077 }
c7030b81
NC
2078 }
2079
6224f72b 2080 switch_end:
54310121 2081
c7030b81
NC
2082 {
2083 char *s;
2084
f675dbe5
CB
2085 if (
2086#ifndef SECURE_INTERNAL_GETENV
284167a5 2087 !TAINTING_get &&
f675dbe5 2088#endif
cf756827 2089 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 2090 {
9e0b0d62
KW
2091 /* s points to static memory in getenv(), which may be overwritten at
2092 * any time; use a mortal copy instead */
2093 s = SvPVX(sv_2mortal(newSVpv(s, 0)));
2094
74288ac8
GS
2095 while (isSPACE(*s))
2096 s++;
317ea90d 2097 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2098#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2099 /* silently ignore */
dc6d7f5c 2100#elif defined(NO_TAINT_SUPPORT)
3231f579 2101 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2102 "Cowardly refusing to run with -t or -T flags");
2103#else
22f7c9c9 2104 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2105 TAINTING_set(TRUE);
2106 TAINT_WARN_set(FALSE);
2107#endif
317ea90d 2108 }
74288ac8 2109 else {
bd61b366 2110 char *popt_copy = NULL;
74288ac8 2111 while (s && *s) {
54913509 2112 const char *d;
74288ac8
GS
2113 while (isSPACE(*s))
2114 s++;
2115 if (*s == '-') {
2116 s++;
2117 if (isSPACE(*s))
2118 continue;
2119 }
4ea8f8fb 2120 d = s;
74288ac8
GS
2121 if (!*s)
2122 break;
2b622f1a 2123 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2124 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2125 while (++s && *s) {
2126 if (isSPACE(*s)) {
cf756827 2127 if (!popt_copy) {
bfa6c418
NC
2128 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2129 s = popt_copy + (s - d);
2130 d = popt_copy;
cf756827 2131 }
4ea8f8fb
MS
2132 *s++ = '\0';
2133 break;
2134 }
2135 }
1c4db469 2136 if (*d == 't') {
dc6d7f5c 2137#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2138 /* silently ignore */
dc6d7f5c 2139#elif defined(NO_TAINT_SUPPORT)
3231f579 2140 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2141 "Cowardly refusing to run with -t or -T flags");
2142#else
2143 if( !TAINTING_get) {
2144 TAINT_WARN_set(TRUE);
2145 TAINTING_set(TRUE);
317ea90d 2146 }
284167a5 2147#endif
1c4db469 2148 } else {
97bd5664 2149 moreswitches(d);
1c4db469 2150 }
6224f72b 2151 }
6224f72b
GS
2152 }
2153 }
c7030b81 2154 }
a0d0e21e 2155
c29067d7
CH
2156 /* Set $^X early so that it can be used for relocatable paths in @INC */
2157 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2158 assert (!TAINT_get);
c29067d7 2159 TAINT;
e2051532 2160 set_caret_X();
c29067d7
CH
2161 TAINT_NOT;
2162
43c0c913 2163#if defined(USE_SITECUSTOMIZE)
20ef40cf 2164 if (!minus_f) {
43c0c913 2165 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2166 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2167 ie a q() operator with a NUL byte as a the delimiter. This avoids
2168 problems with pathnames containing (say) ' */
43c0c913
NC
2169# ifdef PERL_IS_MINIPERL
2170 AV *const inc = GvAV(PL_incgv);
2171 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2172
2173 if (inc0) {
15870c5c
NC
2174 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2175 it should be reported immediately as a build failure. */
43c0c913
NC
2176 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2177 Perl_newSVpvf(aTHX_
5de87db5 2178 "BEGIN { my $f = q%c%s%"SVf"/buildcustomize.pl%c; "
af26e4f2
FC
2179 "do {local $!; -f $f }"
2180 " and do $f || die $@ || qq '$f: $!' }",
5de87db5 2181 0, (TAINTING_get ? "./" : ""), SVfARG(*inc0), 0));
43c0c913
NC
2182 }
2183# else
2184 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2185 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2186 if (raw_sitelib) {
2187 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2188 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2189 INCPUSH_CAN_RELOCATE);
2190 const char *const sitelib = SvPVX(sitelib_sv);
2191 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2192 Perl_newSVpvf(aTHX_
2193 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
c1f6cd39
BF
2194 0, SVfARG(sitelib), 0,
2195 0, SVfARG(sitelib), 0));
bac5c4fc
JD
2196 assert (SvREFCNT(sitelib_sv) == 1);
2197 SvREFCNT_dec(sitelib_sv);
2198 }
43c0c913 2199# endif
20ef40cf
GA
2200 }
2201#endif
2202
6224f72b
GS
2203 if (!scriptname)
2204 scriptname = argv[0];
3280af22 2205 if (PL_e_script) {
6224f72b
GS
2206 argc++,argv--;
2207 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2208 }
bd61b366 2209 else if (scriptname == NULL) {
6224f72b
GS
2210#ifdef MSDOS
2211 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2212 moreswitches("h");
6224f72b
GS
2213#endif
2214 scriptname = "-";
2215 }
2216
284167a5 2217 assert (!TAINT_get);
2cace6ac 2218 init_perllib();
6224f72b 2219
a52eba0e 2220 {
f20b2998 2221 bool suidscript = FALSE;
829372d3 2222
8d113837 2223 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2224 if (!rsfp) {
2225 rsfp = PerlIO_stdin();
87606032 2226 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2227 }
6224f72b 2228
b24bc095 2229 validate_suid(rsfp);
6224f72b 2230
64ca3a65 2231#ifndef PERL_MICRO
a52eba0e
NC
2232# if defined(SIGCHLD) || defined(SIGCLD)
2233 {
2234# ifndef SIGCHLD
2235# define SIGCHLD SIGCLD
2236# endif
2237 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2238 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2239 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2240 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2241 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2242 }
0b5b802d 2243 }
a52eba0e 2244# endif
64ca3a65 2245#endif
0b5b802d 2246
737c24fc 2247 if (doextract) {
faef540c 2248
f20b2998 2249 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2250 setuid scripts. */
2251 forbid_setid('x', suidscript);
f20b2998 2252 /* Hence you can't get here if suidscript is true */
faef540c 2253
95670bde
NC
2254 linestr_sv = newSV_type(SVt_PV);
2255 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2256 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2257 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2258 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2259 }
f4c556ac 2260 }
6224f72b 2261
ea726b52 2262 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2263 CvUNIQUE_on(PL_compcv);
2264
eacbb379 2265 CvPADLIST_set(PL_compcv, pad_new(0));
6224f72b 2266
dd69841b
BB
2267 PL_isarev = newHV();
2268
0c4f7ff0 2269 boot_core_PerlIO();
6224f72b 2270 boot_core_UNIVERSAL();
e1a479c5 2271 boot_core_mro();
4a5df386 2272 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2273
2274 if (xsinit)
acfe0abc 2275 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2276#ifndef PERL_MICRO
739a0b84 2277#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2278 init_os_extras();
6224f72b 2279#endif
64ca3a65 2280#endif
6224f72b 2281
29209bc5 2282#ifdef USE_SOCKS
1b9c9cf5
DH
2283# ifdef HAS_SOCKS5_INIT
2284 socks5_init(argv[0]);
2285# else
29209bc5 2286 SOCKSinit(argv[0]);
1b9c9cf5 2287# endif
ac27b0f5 2288#endif
29209bc5 2289
6224f72b
GS
2290 init_predump_symbols();
2291 /* init_postdump_symbols not currently designed to be called */
2292 /* more than once (ENV isn't cleared first, for example) */
2293 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2294 if (!PL_do_undump)
6224f72b
GS
2295 init_postdump_symbols(argc,argv,env);
2296
27da23d5
JH
2297 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2298 * or explicitly in some platforms.
085a54d9 2299 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2300 * look like the user wants to use UTF-8. */
a0fd4948 2301#if defined(__SYMBIAN32__)
27da23d5
JH
2302 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2303#endif
e27b5b51 2304# ifndef PERL_IS_MINIPERL
06e66572
JH
2305 if (PL_unicode) {
2306 /* Requires init_predump_symbols(). */
a05d7ebb 2307 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2308 IO* io;
2309 PerlIO* fp;
2310 SV* sv;
2311
a05d7ebb 2312 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2313 * and the default open disciplines. */
a05d7ebb
JH
2314 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2315 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2316 (fp = IoIFP(io)))
2317 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2318 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2319 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2320 (fp = IoOFP(io)))
2321 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2322 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2323 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2324 (fp = IoOFP(io)))
2325 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2326 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2327 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2328 SVt_PV)))) {
a05d7ebb
JH
2329 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2330 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2331 if (in) {
2332 if (out)
76f68e9b 2333 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2334 else
76f68e9b 2335 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2336 }
2337 else if (out)
76f68e9b 2338 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2339 SvSETMAGIC(sv);
2340 }
b310b053
JH
2341 }
2342 }
e27b5b51 2343#endif
b310b053 2344
c7030b81
NC
2345 {
2346 const char *s;
4ffa73a3
JH
2347 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2348 if (strEQ(s, "unsafe"))
2349 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2350 else if (strEQ(s, "safe"))
2351 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2352 else
2353 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2354 }
c7030b81 2355 }
4ffa73a3 2356
81d86705 2357
87606032 2358 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2359 SvREFCNT_dec(linestr_sv);
95670bde 2360
219f7226 2361 PL_subname = newSVpvs("main");
6224f72b 2362
5486870f
DM
2363 if (add_read_e_script)
2364 filter_add(read_e_script, NULL);
2365
6224f72b
GS
2366 /* now parse the script */
2367
93189314 2368 SETERRNO(0,SS_NORMAL);
28ac2b49 2369 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2370 if (PL_minus_c)
cea2e8a9 2371 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2372 else {
cea2e8a9 2373 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2374 PL_origfilename);
6224f72b
GS
2375 }
2376 }
57843af0 2377 CopLINE_set(PL_curcop, 0);
03d9f026 2378 SET_CURSTASH(PL_defstash);
3280af22
NIS
2379 if (PL_e_script) {
2380 SvREFCNT_dec(PL_e_script);
a0714e2c 2381 PL_e_script = NULL;
6224f72b
GS
2382 }
2383
3280af22 2384 if (PL_do_undump)
6224f72b
GS
2385 my_unexec();
2386
57843af0
GS
2387 if (isWARN_ONCE) {
2388 SAVECOPFILE(PL_curcop);
2389 SAVECOPLINE(PL_curcop);
3280af22 2390 gv_check(PL_defstash);
57843af0 2391 }
6224f72b
GS
2392
2393 LEAVE;
2394 FREETMPS;
2395
2396#ifdef MYMALLOC
f6a607bc
RGS
2397 {
2398 const char *s;
22ff3130
HS
2399 UV uv;
2400 s = PerlEnv_getenv("PERL_DEBUG_MSTATS");
2401 if (s && grok_atoUV(s, &uv, NULL) && uv >= 2)
96e440d2 2402 dump_mstats("after compilation:");
f6a607bc 2403 }
6224f72b
GS
2404#endif
2405
2406 ENTER;
febb3a6d 2407 PL_restartjmpenv = NULL;
3280af22 2408 PL_restartop = 0;
312caa8e 2409 return NULL;
6224f72b
GS
2410}
2411
954c1994
GS
2412/*
2413=for apidoc perl_run
2414
2415Tells a Perl interpreter to run. See L<perlembed>.
2416
2417=cut
2418*/
2419
6224f72b 2420int
0cb96387 2421perl_run(pTHXx)
6224f72b 2422{
6224f72b 2423 I32 oldscope;
14dd3ad8 2424 int ret = 0;
db36c5a1 2425 dJMPENV;
6224f72b 2426
7918f24d
NC
2427 PERL_ARGS_ASSERT_PERL_RUN;
2428#ifndef MULTIPLICITY
ed6c66dd 2429 PERL_UNUSED_ARG(my_perl);
7918f24d 2430#endif
9d4ba2ae 2431
3280af22 2432 oldscope = PL_scopestack_ix;
96e176bf
CL
2433#ifdef VMS
2434 VMSISH_HUSHED = 0;
2435#endif
6224f72b 2436
14dd3ad8 2437 JMPENV_PUSH(ret);
6224f72b
GS
2438 switch (ret) {
2439 case 1:
2440 cxstack_ix = -1; /* start context stack again */
312caa8e 2441 goto redo_body;
14dd3ad8 2442 case 0: /* normal completion */
14dd3ad8
GS
2443 redo_body:
2444 run_body(oldscope);
924ba076 2445 /* FALLTHROUGH */
14dd3ad8 2446 case 2: /* my_exit() */
3280af22 2447 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2448 LEAVE;
2449 FREETMPS;
03d9f026 2450 SET_CURSTASH(PL_defstash);
3a1ee7e8 2451 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2452 PL_endav && !PL_minus_c) {
ca7b837b 2453 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2454 call_list(oldscope, PL_endav);
9ebf26ad 2455 }
6224f72b
GS
2456#ifdef MYMALLOC
2457 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2458 dump_mstats("after execution: ");
2459#endif
37038d91 2460 ret = STATUS_EXIT;
14dd3ad8 2461 break;
6224f72b 2462 case 3:
312caa8e
CS
2463 if (PL_restartop) {
2464 POPSTACK_TO(PL_mainstack);
2465 goto redo_body;
6224f72b 2466 }
5637ef5b 2467 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2468 FREETMPS;
14dd3ad8
GS
2469 ret = 1;
2470 break;
6224f72b
GS
2471 }
2472
14dd3ad8
GS
2473 JMPENV_POP;
2474 return ret;
312caa8e
CS
2475}
2476
dd374669 2477STATIC void
14dd3ad8
GS
2478S_run_body(pTHX_ I32 oldscope)
2479{
d3b97530
DM
2480 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2481 PL_sawampersand ? "Enabling" : "Omitting",
2482 (unsigned int)(PL_sawampersand)));
6224f72b 2483
3280af22 2484 if (!PL_restartop) {
cf2782cd 2485#ifdef DEBUGGING
f0e3f042
CS
2486 if (DEBUG_x_TEST || DEBUG_B_TEST)
2487 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2488 if (!DEBUG_q_TEST)
2489 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2490#endif
6224f72b 2491
3280af22 2492 if (PL_minus_c) {
bf49b057 2493 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2494 my_exit(0);
2495 }
3280af22 2496 if (PERLDB_SINGLE && PL_DBsingle)
a6d69523 2497 PL_DBsingle_iv = 1;
9ebf26ad 2498 if (PL_initav) {
ca7b837b 2499 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2500 call_list(oldscope, PL_initav);
9ebf26ad 2501 }
f1fac472 2502#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2503 if (PL_main_root && PL_main_root->op_slabbed)
2504 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2505#endif
6224f72b
GS
2506 }
2507
2508 /* do it */
2509
ca7b837b 2510 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2511
3280af22 2512 if (PL_restartop) {
febb3a6d 2513 PL_restartjmpenv = NULL;
533c011a 2514 PL_op = PL_restartop;
3280af22 2515 PL_restartop = 0;
cea2e8a9 2516 CALLRUNOPS(aTHX);
6224f72b 2517 }
3280af22
NIS
2518 else if (PL_main_start) {
2519 CvDEPTH(PL_main_cv) = 1;
533c011a 2520 PL_op = PL_main_start;
cea2e8a9 2521 CALLRUNOPS(aTHX);
6224f72b 2522 }
f6b3007c 2523 my_exit(0);
e5964223 2524 NOT_REACHED; /* NOTREACHED */
6224f72b
GS
2525}
2526
954c1994 2527/*
ccfc67b7
JH
2528=head1 SV Manipulation Functions
2529
954c1994
GS
2530=for apidoc p||get_sv
2531
64ace3f8 2532Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2533C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2534Perl variable does not exist then it will be created. If C<flags> is zero
2535and the variable does not exist then NULL is returned.
954c1994
GS
2536
2537=cut
2538*/
2539
6224f72b 2540SV*
64ace3f8 2541Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2542{
2543 GV *gv;
7918f24d
NC
2544
2545 PERL_ARGS_ASSERT_GET_SV;
2546
64ace3f8 2547 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2548 if (gv)
2549 return GvSV(gv);
a0714e2c 2550 return NULL;
6224f72b
GS
2551}
2552
954c1994 2553/*
ccfc67b7
JH
2554=head1 Array Manipulation Functions
2555
954c1994
GS
2556=for apidoc p||get_av
2557
f0b90de1
SF
2558Returns the AV of the specified Perl global or package array with the given
2559name (so it won't work on lexical variables). C<flags> are passed
72d33970 2560to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2561Perl variable does not exist then it will be created. If C<flags> is zero
2562and the variable does not exist then NULL is returned.
954c1994 2563
f0b90de1
SF
2564Perl equivalent: C<@{"$name"}>.
2565
954c1994
GS
2566=cut
2567*/
2568
6224f72b 2569AV*
cbfd0a87 2570Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2571{
cbfd0a87 2572 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2573
2574 PERL_ARGS_ASSERT_GET_AV;
2575
cbfd0a87 2576 if (flags)
6224f72b
GS
2577 return GvAVn(gv);
2578 if (gv)
2579 return GvAV(gv);
7d49f689 2580 return NULL;
6224f72b
GS
2581}
2582
954c1994 2583/*
ccfc67b7
JH
2584=head1 Hash Manipulation Functions
2585
954c1994
GS
2586=for apidoc p||get_hv
2587
6673a63c 2588Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2589C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c 2590Perl variable does not exist then it will be created. If C<flags> is zero
796b6530 2591and the variable does not exist then C<NULL> is returned.
954c1994
GS
2592
2593=cut
2594*/
2595
6224f72b 2596HV*
6673a63c 2597Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2598{
6673a63c 2599 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2600
2601 PERL_ARGS_ASSERT_GET_HV;
2602
6673a63c 2603 if (flags)
a0d0e21e
LW
2604 return GvHVn(gv);
2605 if (gv)
2606 return GvHV(gv);
5c284bb0 2607 return NULL;
a0d0e21e
LW
2608}
2609
954c1994 2610/*
ccfc67b7
JH
2611=head1 CV Manipulation Functions
2612
780a5241
NC
2613=for apidoc p||get_cvn_flags
2614
2615Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2616C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2617exist then it will be declared (which has the same effect as saying
2618C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2619then NULL is returned.
2620
954c1994
GS
2621=for apidoc p||get_cv
2622
780a5241 2623Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2624
2625=cut
2626*/
2627
a0d0e21e 2628CV*
780a5241 2629Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2630{
780a5241 2631 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2632
2633 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2634
334dda80
FC
2635 /* XXX this is probably not what they think they're getting.
2636 * It has the same effect as "sub name;", i.e. just a forward
2637 * declaration! */
780a5241 2638 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2639 return newSTUB(gv,0);
780a5241 2640 }
a0d0e21e 2641 if (gv)
8ebc5c01 2642 return GvCVu(gv);
601f1833 2643 return NULL;
a0d0e21e
LW
2644}
2645
2c67934f
NC
2646/* Nothing in core calls this now, but we can't replace it with a macro and
2647 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2648CV*
2649Perl_get_cv(pTHX_ const char *name, I32 flags)
2650{
7918f24d
NC
2651 PERL_ARGS_ASSERT_GET_CV;
2652
780a5241
NC
2653 return get_cvn_flags(name, strlen(name), flags);
2654}
2655
79072805
LW
2656/* Be sure to refetch the stack pointer after calling these routines. */
2657
954c1994 2658/*
ccfc67b7
JH
2659
2660=head1 Callback Functions
2661
954c1994
GS
2662=for apidoc p||call_argv
2663
f0b90de1 2664Performs a callback to the specified named and package-scoped Perl subroutine
796b6530 2665with C<argv> (a C<NULL>-terminated array of strings) as arguments. See
72d33970 2666L<perlcall>.
f0b90de1
SF
2667
2668Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2669
2670=cut
2671*/
2672
a0d0e21e 2673I32
5aaab254 2674Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2675
8ac85365
NIS
2676 /* See G_* flags in cop.h */
2677 /* null terminated arg list */
8990e307 2678{
a0d0e21e 2679 dSP;
8990e307 2680
7918f24d
NC
2681 PERL_ARGS_ASSERT_CALL_ARGV;
2682
924508f0 2683 PUSHMARK(SP);
3dc78631
DM
2684 while (*argv) {
2685 mXPUSHs(newSVpv(*argv,0));
2686 argv++;
8990e307 2687 }
3dc78631 2688 PUTBACK;
864dbfa3 2689 return call_pv(sub_name, flags);
8990e307
LW
2690}
2691
954c1994
GS
2692/*
2693=for apidoc p||call_pv
2694
2695Performs a callback to the specified Perl sub. See L<perlcall>.
2696
2697=cut
2698*/
2699
a0d0e21e 2700I32
864dbfa3 2701Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2702 /* name of the subroutine */
2703 /* See G_* flags in cop.h */
a0d0e21e 2704{
7918f24d
NC
2705 PERL_ARGS_ASSERT_CALL_PV;
2706
0da0e728 2707 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2708}
2709
954c1994
GS
2710/*
2711=for apidoc p||call_method
2712
2713Performs a callback to the specified Perl method. The blessed object must
2714be on the stack. See L<perlcall>.
2715
2716=cut
2717*/
2718
a0d0e21e 2719I32
864dbfa3 2720Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2721 /* name of the subroutine */
2722 /* See G_* flags in cop.h */
a0d0e21e 2723{
46ca9bac 2724 STRLEN len;
c106c2be 2725 SV* sv;
7918f24d
NC
2726 PERL_ARGS_ASSERT_CALL_METHOD;
2727
46ca9bac 2728 len = strlen(methname);
c106c2be
RZ
2729 sv = flags & G_METHOD_NAMED
2730 ? sv_2mortal(newSVpvn_share(methname, len,0))
2731 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2732
c106c2be 2733 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2734}
2735
2736/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2737/*
2738=for apidoc p||call_sv
2739
078e2213
TC
2740Performs a callback to the Perl sub specified by the SV.
2741
7c0c544c 2742If neither the C<G_METHOD> nor C<G_METHOD_NAMED> flag is supplied, the
078e2213
TC
2743SV may be any of a CV, a GV, a reference to a CV, a reference to a GV
2744or C<SvPV(sv)> will be used as the name of the sub to call.
2745
2746If the C<G_METHOD> flag is supplied, the SV may be a reference to a CV or
2747C<SvPV(sv)> will be used as the name of the method to call.
2748
2749If the C<G_METHOD_NAMED> flag is supplied, C<SvPV(sv)> will be used as
2750the name of the method to call.
2751
2752Some other values are treated specially for internal use and should
2753not be depended on.
2754
2755See L<perlcall>.
954c1994
GS
2756
2757=cut
2758*/
2759
a0d0e21e 2760I32
001d637e 2761Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2762 /* See G_* flags in cop.h */
a0d0e21e 2763{
5b434c73 2764 dVAR;
a0d0e21e 2765 LOGOP myop; /* fake syntax tree node */
b46e009d 2766 METHOP method_op;
aa689395 2767 I32 oldmark;
8ea43dc8 2768 VOL I32 retval = 0;
54310121 2769 bool oldcatch = CATCH_GET;
6224f72b 2770 int ret;
c4420975 2771 OP* const oldop = PL_op;
db36c5a1 2772 dJMPENV;
1e422769 2773
7918f24d
NC
2774 PERL_ARGS_ASSERT_CALL_SV;
2775
a0d0e21e
LW
2776 if (flags & G_DISCARD) {
2777 ENTER;
2778 SAVETMPS;
2779 }
2f8edad0
NC
2780 if (!(flags & G_WANT)) {
2781 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2782 */
2783 flags |= G_SCALAR;
2784 }
a0d0e21e 2785
aa689395 2786 Zero(&myop, 1, LOGOP);
f51d4af5 2787 if (!(flags & G_NOARGS))
aa689395 2788 myop.op_flags |= OPf_STACKED;
4f911530 2789 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2790 SAVEOP();
533c011a 2791 PL_op = (OP*)&myop;
aa689395 2792
8c9009ad 2793 if (!(flags & G_METHOD_NAMED)) {
5b434c73
DD
2794 dSP;
2795 EXTEND(SP, 1);
8c9009ad
DD
2796 PUSHs(sv);
2797 PUTBACK;
5b434c73 2798 }
aa689395 2799 oldmark = TOPMARK;
a0d0e21e 2800
3280af22 2801 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2802 /* Handle first BEGIN of -d. */
3280af22 2803 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2804 /* Try harder, since this may have been a sighandler, thus
2805 * curstash may be meaningless. */
ea726b52 2806 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2807 && !(flags & G_NODEBUG))
5ff48db8 2808 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2809
c106c2be 2810 if (flags & (G_METHOD|G_METHOD_NAMED)) {
b46e009d 2811 Zero(&method_op, 1, METHOP);
2812 method_op.op_next = (OP*)&myop;
2813 PL_op = (OP*)&method_op;
c106c2be 2814 if ( flags & G_METHOD_NAMED ) {
b46e009d 2815 method_op.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2816 method_op.op_type = OP_METHOD_NAMED;
2817 method_op.op_u.op_meth_sv = sv;
c106c2be 2818 } else {
b46e009d 2819 method_op.op_ppaddr = PL_ppaddr[OP_METHOD];
2820 method_op.op_type = OP_METHOD;
c106c2be
RZ
2821 }
2822 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2823 myop.op_type = OP_ENTERSUB;
968b3946
GS
2824 }
2825
312caa8e 2826 if (!(flags & G_EVAL)) {
0cdb2077 2827 CATCH_SET(TRUE);
d6f07c05 2828 CALL_BODY_SUB((OP*)&myop);
312caa8e 2829 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2830 CATCH_SET(oldcatch);
312caa8e
CS
2831 }
2832 else {
8e90e786 2833 I32 old_cxix;
d78bda3d 2834 myop.op_other = (OP*)&myop;
101d6365 2835 (void)POPMARK;
8e90e786 2836 old_cxix = cxstack_ix;
274ed8ae 2837 create_eval_scope(NULL, flags|G_FAKINGEVAL);
101d6365 2838 (void)INCMARK;
a0d0e21e 2839
14dd3ad8 2840 JMPENV_PUSH(ret);
edb2152a 2841
6224f72b
GS
2842 switch (ret) {
2843 case 0:
14dd3ad8 2844 redo_body:
d6f07c05 2845 CALL_BODY_SUB((OP*)&myop);
312caa8e 2846 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2847 if (!(flags & G_KEEPERR)) {
ab69dbc2 2848 CLEAR_ERRSV();
8433848b 2849 }
a0d0e21e 2850 break;
6224f72b 2851 case 1:
f86702cc 2852 STATUS_ALL_FAILURE;
924ba076 2853 /* FALLTHROUGH */
6224f72b 2854 case 2:
a0d0e21e 2855 /* my_exit() was called */
03d9f026 2856 SET_CURSTASH(PL_defstash);
a0d0e21e 2857 FREETMPS;
14dd3ad8 2858 JMPENV_POP;
f86702cc 2859 my_exit_jump();
e5964223 2860 NOT_REACHED; /* NOTREACHED */
6224f72b 2861 case 3:
3280af22 2862 if (PL_restartop) {
febb3a6d 2863 PL_restartjmpenv = NULL;
533c011a 2864 PL_op = PL_restartop;
3280af22 2865 PL_restartop = 0;
312caa8e 2866 goto redo_body;
a0d0e21e 2867 }
3280af22 2868 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2869 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2870 retval = 0;
2871 else {
2872 retval = 1;
3280af22 2873 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2874 }
312caa8e 2875 break;
a0d0e21e 2876 }
a0d0e21e 2877
8e90e786
DM
2878 /* if we croaked, depending on how we croaked the eval scope
2879 * may or may not have already been popped */
2880 if (cxstack_ix > old_cxix) {
2881 assert(cxstack_ix == old_cxix + 1);
4ebe6e95 2882 assert(CxTYPE(CX_CUR()) == CXt_EVAL);
edb2152a 2883 delete_eval_scope();
8e90e786 2884 }
14dd3ad8 2885 JMPENV_POP;
a0d0e21e 2886 }
1e422769 2887
a0d0e21e 2888 if (flags & G_DISCARD) {
3280af22 2889 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2890 retval = 0;
2891 FREETMPS;
2892 LEAVE;
2893 }
533c011a 2894 PL_op = oldop;
a0d0e21e
LW
2895 return retval;
2896}
2897
6e72f9df 2898/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2899
954c1994
GS
2900/*
2901=for apidoc p||eval_sv
2902
72d33970 2903Tells Perl to C<eval> the string in the SV. It supports the same flags
796b6530 2904as C<call_sv>, with the obvious exception of C<G_EVAL>. See L<perlcall>.
954c1994
GS
2905
2906=cut
2907*/
2908
a0d0e21e 2909I32
864dbfa3 2910Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2911
8ac85365 2912 /* See G_* flags in cop.h */
a0d0e21e 2913{
97aff369 2914 dVAR;
a0d0e21e 2915 UNOP myop; /* fake syntax tree node */
5b434c73 2916 VOL I32 oldmark;
8ea43dc8 2917 VOL I32 retval = 0;
6224f72b 2918 int ret;
c4420975 2919 OP* const oldop = PL_op;
db36c5a1 2920 dJMPENV;
84902520 2921
7918f24d
NC
2922 PERL_ARGS_ASSERT_EVAL_SV;
2923
4633a7c4
LW
2924 if (flags & G_DISCARD) {
2925 ENTER;
2926 SAVETMPS;
2927 }
2928
462e5cf6 2929 SAVEOP();
533c011a 2930 PL_op = (OP*)&myop;
5ff48db8 2931 Zero(&myop, 1, UNOP);
5b434c73
DD
2932 {
2933 dSP;
2934 oldmark = SP - PL_stack_base;
2935 EXTEND(SP, 1);
2936 PUSHs(sv);
2937 PUTBACK;
2938 }
79072805 2939
4633a7c4
LW
2940 if (!(flags & G_NOARGS))
2941 myop.op_flags = OPf_STACKED;
6e72f9df 2942 myop.op_type = OP_ENTEREVAL;
4f911530 2943 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2944 if (flags & G_KEEPERR)
2945 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2946
2947 if (flags & G_RE_REPARSING)
2948 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2949
dedbcade 2950 /* fail now; otherwise we could fail after the JMPENV_PUSH but
13febba5 2951 * before a cx_pusheval(), which corrupts the stack after a croak */
dedbcade
DM
2952 TAINT_PROPER("eval_sv()");
2953
14dd3ad8 2954 JMPENV_PUSH(ret);
6224f72b
GS
2955 switch (ret) {
2956 case 0:
14dd3ad8 2957 redo_body:
2ba65d5f
DM
2958 if (PL_op == (OP*)(&myop)) {
2959 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2960 if (!PL_op)
2961 goto fail; /* failed in compilation */
2962 }
4aca2f62 2963 CALLRUNOPS(aTHX);
312caa8e 2964 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2965 if (!(flags & G_KEEPERR)) {
ab69dbc2 2966 CLEAR_ERRSV();
8433848b 2967 }
4633a7c4 2968 break;
6224f72b 2969 case 1:
f86702cc 2970 STATUS_ALL_FAILURE;
924ba076 2971 /* FALLTHROUGH */
6224f72b 2972 case 2:
4633a7c4 2973 /* my_exit() was called */
03d9f026 2974 SET_CURSTASH(PL_defstash);
4633a7c4 2975 FREETMPS;
14dd3ad8 2976 JMPENV_POP;
f86702cc 2977 my_exit_jump();
e5964223 2978 NOT_REACHED; /* NOTREACHED */
6224f72b 2979 case 3:
3280af22 2980 if (PL_restartop) {
febb3a6d 2981 PL_restartjmpenv = NULL;
533c011a 2982 PL_op = PL_restartop;
3280af22 2983 PL_restartop = 0;
312caa8e 2984 goto redo_body;
4633a7c4 2985 }
4aca2f62 2986 fail:
3280af22 2987 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2988 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2989 retval = 0;
2990 else {
2991 retval = 1;
3280af22 2992 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2993 }
312caa8e 2994 break;
4633a7c4
LW
2995 }
2996
14dd3ad8 2997 JMPENV_POP;
4633a7c4 2998 if (flags & G_DISCARD) {
3280af22 2999 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
3000 retval = 0;
3001 FREETMPS;
3002 LEAVE;
3003 }
533c011a 3004 PL_op = oldop;
4633a7c4
LW
3005 return retval;
3006}
3007
954c1994
GS
3008/*
3009=for apidoc p||eval_pv
3010
422791e4 3011Tells Perl to C<eval> the given string in scalar context and return an SV* result.
954c1994
GS
3012
3013=cut
3014*/
3015
137443ea 3016SV*
864dbfa3 3017Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 3018{
137443ea
PP
3019 SV* sv = newSVpv(p, 0);
3020
7918f24d
NC
3021 PERL_ARGS_ASSERT_EVAL_PV;
3022
864dbfa3 3023 eval_sv(sv, G_SCALAR);
137443ea
PP
3024 SvREFCNT_dec(sv);
3025
ed1786ad
DD
3026 {
3027 dSP;
3028 sv = POPs;
3029 PUTBACK;
3030 }
137443ea 3031
eed484f9
DD
3032 /* just check empty string or undef? */
3033 if (croak_on_error) {
3034 SV * const errsv = ERRSV;
3035 if(SvTRUE_NN(errsv))
3036 /* replace with croak_sv? */
3037 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 3038 }
137443ea
PP
3039
3040 return sv;
3041}
3042
4633a7c4
LW
3043/* Require a module. */
3044
954c1994 3045/*
ccfc67b7
JH
3046=head1 Embedding Functions
3047
954c1994
GS
3048=for apidoc p||require_pv
3049
7d3fb230
BS
3050Tells Perl to C<require> the file named by the string argument. It is
3051analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 3052implemented that way; consider using load_module instead.
954c1994 3053
7d3fb230 3054=cut */
954c1994 3055
4633a7c4 3056void
864dbfa3 3057Perl_require_pv(pTHX_ const char *pv)
4633a7c4 3058{
d3acc0f7 3059 dSP;
97aff369 3060 SV* sv;
7918f24d
NC
3061
3062 PERL_ARGS_ASSERT_REQUIRE_PV;
3063
e788e7d3 3064 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
3065 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
3066 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 3067 POPSTACK;
79072805
LW
3068}
3069
76e3520e 3070STATIC void
b6f82619 3071S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 3072{
ab821d7f 3073 /* This message really ought to be max 23 lines.
75c72d73 3074 * Removed -h because the user already knows that option. Others? */
fb73857a 3075
1566c39d
NC
3076 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
3077 minimum of 509 character string literals. */
27da23d5 3078 static const char * const usage_msg[] = {
1566c39d
NC
3079" -0[octal] specify record separator (\\0, if no argument)\n"
3080" -a autosplit mode with -n or -p (splits $_ into @F)\n"
3081" -C[number/list] enables the listed Unicode features\n"
3082" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3083" -d[:debugger] run program under debugger\n"
3084" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3085" -e program one line of program (several -e's allowed, omit programfile)\n"
3086" -E program like -e, but enables all optional features\n"
3087" -f don't do $sitelib/sitecustomize.pl at startup\n"
3088" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3089" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3090" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3091" -l[octal] enable line ending processing, specifies line terminator\n"
3092" -[mM][-]module execute \"use/no module...\" before executing program\n"
3093" -n assume \"while (<>) { ... }\" loop around program\n"
3094" -p assume loop like -n but print line also, like sed\n"
3095" -s enable rudimentary parsing for switches after programfile\n"
3096" -S look for programfile using PATH environment variable\n",
3097" -t enable tainting warnings\n"
3098" -T enable tainting checks\n"
3099" -u dump core after parsing program\n"
3100" -U allow unsafe operations\n"
3101" -v print version, patchlevel and license\n"
3102" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3103" -w enable many useful warnings\n"
1566c39d
NC
3104" -W enable all warnings\n"
3105" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3106" -X disable all warnings\n"
3107" \n"
3108"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3109NULL
3110};
27da23d5 3111 const char * const *p = usage_msg;
1566c39d 3112 PerlIO *out = PerlIO_stdout();
fb73857a 3113
1566c39d
NC
3114 PerlIO_printf(out,
3115 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3116 PL_origargv[0]);
fb73857a 3117 while (*p)
1566c39d 3118 PerlIO_puts(out, *p++);
b6f82619 3119 my_exit(0);
4633a7c4
LW
3120}
3121
b4ab917c
DM
3122/* convert a string of -D options (or digits) into an int.
3123 * sets *s to point to the char after the options */
3124
3125#ifdef DEBUGGING
3126int
e1ec3a88 3127Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3128{
27da23d5 3129 static const char * const usage_msgd[] = {
651b8f1a
NC
3130 " Debugging flag values: (see also -d)\n"
3131 " p Tokenizing and parsing (with v, displays parse stack)\n"
3132 " s Stack snapshots (with v, displays all stacks)\n"
3133 " l Context (loop) stack processing\n"
3134 " t Trace execution\n"
3135 " o Method and overloading resolution\n",
3136 " c String/numeric conversions\n"
3137 " P Print profiling info, source file input state\n"
3138 " m Memory and SV allocation\n"
3139 " f Format processing\n"
3140 " r Regular expression parsing and execution\n"
3141 " x Syntax tree dump\n",
3142 " u Tainting checks\n"
3143 " H Hash dump -- usurps values()\n"
3144 " X Scratchpad allocation\n"
3145 " D Cleaning up\n"
56967202 3146 " S Op slab allocation\n"
651b8f1a
NC
3147 " T Tokenising\n"
3148 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3149 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3150 " v Verbose: use in conjunction with other flags\n"
3151 " C Copy On Write\n"
3152 " A Consistency checks on internal structures\n"
3153 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3154 " M trace smart match resolution\n"
3155 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3156 " L trace some locale setting information--for Perl core development\n",
e17bc05a 3157 " i trace PerlIO layer processing\n",
e6e64d9b
JC
3158 NULL
3159 };
22ff3130 3160 UV uv = 0;
7918f24d
NC
3161
3162 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3163
b4ab917c
DM
3164 if (isALPHA(**s)) {
3165 /* if adding extra options, remember to update DEBUG_MASK */
e17bc05a 3166 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBLi";
b4ab917c 3167
0eb30aeb 3168 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3169 const char * const d = strchr(debopts,**s);
b4ab917c 3170 if (d)
22ff3130 3171 uv |= 1 << (d - debopts);
b4ab917c 3172 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3173 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3174 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3175 }
3176 }
e6e64d9b 3177 else if (isDIGIT(**s)) {
96e440d2 3178 const char* e;
22ff3130 3179 if (grok_atoUV(*s, &uv, &e))
96e440d2 3180 *s = e;
0eb30aeb 3181 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3182 }
ddcf8bc1 3183 else if (givehelp) {
06e869a4 3184 const char *const *p = usage_msgd;
651b8f1a 3185 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3186 }
22ff3130 3187 return (int)uv; /* ignore any UV->int conversion loss */
b4ab917c
DM
3188}
3189#endif
3190
79072805
LW
3191/* This routine handles any switches that can be given during run */
3192
c7030b81
NC
3193const char *
3194Perl_moreswitches(pTHX_ const char *s)
79072805 3195{
27da23d5 3196 dVAR;
84c133a0 3197 UV rschar;
0544e6df 3198 const char option = *s; /* used to remember option in -m/-M code */
79072805 3199
7918f24d
NC
3200 PERL_ARGS_ASSERT_MORESWITCHES;
3201
79072805
LW
3202 switch (*s) {
3203 case '0':
a863c7d1 3204 {
f2095865 3205 I32 flags = 0;
a3b680e6 3206 STRLEN numlen;
f2095865
JH
3207
3208 SvREFCNT_dec(PL_rs);
3209 if (s[1] == 'x' && s[2]) {
a3b680e6 3210 const char *e = s+=2;
f2095865
JH
3211 U8 *tmps;
3212
a3b680e6
AL
3213 while (*e)
3214 e++;
f2095865
JH
3215 numlen = e - s;
3216 flags = PERL_SCAN_SILENT_ILLDIGIT;
3217 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3218 if (s + numlen < e) {
3219 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3220 numlen = 0;
3221 s--;
3222 }
396482e1 3223 PL_rs = newSVpvs("");
5f560d8a 3224 SvGROW(PL_rs, (STRLEN)(UVCHR_SKIP(rschar) + 1));
f2095865
JH
3225 tmps = (U8*)SvPVX(PL_rs);
3226 uvchr_to_utf8(tmps, rschar);
5f560d8a 3227 SvCUR_set(PL_rs, UVCHR_SKIP(rschar));
f2095865
JH
3228 SvUTF8_on(PL_rs);
3229 }
3230 else {
3231 numlen = 4;
3232 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3233 if (rschar & ~((U8)~0))
3234 PL_rs = &PL_sv_undef;
3235 else if (!rschar && numlen >= 2)
396482e1 3236 PL_rs = newSVpvs("");
f2095865
JH
3237 else {
3238 char ch = (char)rschar;
3239 PL_rs = newSVpvn(&ch, 1);
3240 }
3241 }
64ace3f8 3242 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3243 return s + numlen;
a863c7d1 3244 }
46487f74 3245 case 'C':
a05d7ebb 3246 s++;
dd374669 3247 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3248 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3249 PL_utf8cache = -1;
46487f74 3250 return s;
2304df62 3251 case 'F':
5fc691f1 3252 PL_minus_a = TRUE;
3280af22 3253 PL_minus_F = TRUE;
24ffa309 3254 PL_minus_n = TRUE;
ebce5377
RGS
3255 PL_splitstr = ++s;
3256 while (*s && !isSPACE(*s)) ++s;
e49e380e 3257 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3258 return s;
79072805 3259 case 'a':
3280af22 3260 PL_minus_a = TRUE;
24ffa309 3261 PL_minus_n = TRUE;
79072805
LW
3262 s++;
3263 return s;
3264 case 'c':
3280af22 3265 PL_minus_c = TRUE;
79072805
LW
3266 s++;
3267 return s;
3268 case 'd':
f20b2998 3269 forbid_setid('d', FALSE);
4633a7c4 3270 s++;
2cbb2ee1
RGS
3271
3272 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3273 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3274 ++s;
3275 my_setenv("PERL5DB_THREADED", "1");
3276 }
3277
70c94a19
RR
3278 /* The following permits -d:Mod to accepts arguments following an =
3279 in the fashion that -MSome::Mod does. */
3280 if (*s == ':' || *s == '=') {
b19934fb
NC
3281 const char *start;
3282 const char *end;
3283 SV *sv;
3284
3285 if (*++s == '-') {
3286 ++s;
3287 sv = newSVpvs("no Devel::");
3288 } else {
3289 sv = newSVpvs("use Devel::");
3290 }
3291
3292 start = s;
3293 end = s + strlen(s);
f85893a1 3294
b19934fb 3295 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3296 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3297 if (*s != '=')
f85893a1 3298 sv_catpvn(sv, start, end - start);
70c94a19
RR
3299 else {
3300 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3301 /* Don't use NUL as q// delimiter here, this string goes in the
3302 * environment. */
3303 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3304 }
f85893a1 3305 s = end;
184f32ec 3306 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3307 SvREFCNT_dec(sv);
4633a7c4 3308 }
ed094faf 3309 if (!PL_perldb) {
3280af22 3310 PL_perldb = PERLDB_ALL;
a0d0e21e 3311 init_debugger();
ed094faf 3312 }
79072805
LW
3313 return s;
3314 case 'D':
0453d815 3315 {
79072805 3316#ifdef DEBUGGING
f20b2998 3317 forbid_setid('D', FALSE);
b4ab917c 3318 s++;
dd374669 3319 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3320#else /* !DEBUGGING */
0453d815 3321 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3322 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3323 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3324 for (s++; isWORDCHAR(*s); s++) ;
79072805 3325#endif
79072805 3326 return s;
2b5060ae 3327 NOT_REACHED; /* NOTREACHED */
0453d815 3328 }
4633a7c4 3329 case 'h':
b6f82619 3330 usage();
2b5060ae
DM
3331 NOT_REACHED; /* NOTREACHED */
3332
79072805 3333 case 'i':
43c5f42d 3334 Safefree(PL_inplace);
c030f24b
GH
3335#if defined(__CYGWIN__) /* do backup extension automagically */
3336 if (*(s+1) == '\0') {
c86a4f2e 3337 PL_inplace = savepvs(".bak");
c030f24b
GH
3338 return s+1;
3339 }
3340#endif /* __CYGWIN__ */
5ef5d758 3341 {
d4c19fe8 3342 const char * const start = ++s;
5ef5d758
NC
3343 while (*s && !isSPACE(*s))
3344 ++s;
3345
3346 PL_inplace = savepvn(start, s - start);
3347 }
7b8d334a 3348 if (*s) {
5ef5d758 3349 ++s;
7b8d334a 3350 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3351 s++;
7b8d334a 3352 }
fb73857a 3353 return s;
4e49a025 3354 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3355 forbid_setid('I', FALSE);
fb73857a
PP
3356 ++s;
3357 while (*s && isSPACE(*s))
3358 ++s;
3359 if (*s) {
c7030b81 3360 const char *e, *p;
0df16ed7
GS
3361 p = s;
3362 /* ignore trailing spaces (possibly followed by other switches) */
3363 do {
3364 for (e = p; *e && !isSPACE(*e); e++) ;
3365 p = e;
3366 while (isSPACE(*p))
3367 p++;
3368 } while (*p && *p != '-');
55b4bc1c 3369 incpush(s, e-s,
e28f3139 3370 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3371 s = p;
3372 if (*s == '-')
3373 s++;
79072805
LW
3374 }
3375 else
a67e862a 3376 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3377 return s;
79072805 3378 case 'l':
3280af22 3379 PL_minus_l = TRUE;
79072805 3380 s++;
7889fe52
NIS
3381 if (PL_ors_sv) {
3382 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3383 PL_ors_sv = NULL;
7889fe52 3384 }
79072805 3385 if (isDIGIT(*s)) {
53305cf1 3386 I32 flags = 0;
a3b680e6 3387 STRLEN numlen;
396482e1 3388 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3389 numlen = 3 + (*s == '0');
3390 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3391 s += numlen;
3392 }
3393 else {
8bfdd7d9 3394 if (RsPARA(PL_rs)) {
396482e1 3395 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3396 }
3397 else {
8bfdd7d9 3398 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3399 }
79072805
LW
3400 }
3401 return s;
1a30305b 3402 case 'M':
f20b2998 3403 forbid_setid('M', FALSE); /* XXX ? */
924ba076 3404 /* FALLTHROUGH */
1a30305b 3405 case 'm':
f20b2998 3406 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3407 if (*++s) {
c7030b81 3408 const char *start;
b64cb68c 3409 const char *end;
11343788 3410 SV *sv;
e1ec3a88 3411 const char *use = "use ";
0544e6df 3412 bool colon = FALSE;
a5f75d66 3413 /* -M-foo == 'no foo' */
d0043bd1
NC
3414 /* Leading space on " no " is deliberate, to make both
3415 possibilities the same length. */
3416 if (*s == '-') { use = " no "; ++s; }
3417 sv = newSVpvn(use,4);
a5f75d66 3418 start = s;
1a30305b 3419 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3420 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3421 if( *s++ == ':' ) {
3422 if( *s == ':' )
3423 s++;
3424 else
3425 colon = TRUE;
3426 }
3427 }
3428 if (s == start)
3429 Perl_croak(aTHX_ "Module name required with -%c option",
3430 option);
3431 if (colon)
3432 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3433 "contains single ':'",
63da6837 3434 (int)(s - start), start, option);
b64cb68c 3435 end = s + strlen(s);
c07a80fd 3436 if (*s != '=') {
b64cb68c 3437 sv_catpvn(sv, start, end - start);
0544e6df 3438 if (option == 'm') {
c07a80fd 3439 if (*s != '\0')
cea2e8a9 3440 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3441 sv_catpvs( sv, " ()");
c07a80fd
PP
3442 }
3443 } else {
11343788 3444 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3445 /* Use NUL as q''-delimiter. */
3446 sv_catpvs(sv, " split(/,/,q\0");
3447 ++s;
3448 sv_catpvn(sv, s, end - s);
396482e1 3449 sv_catpvs(sv, "\0)");
c07a80fd 3450 }
b64cb68c 3451 s = end;
29a861e7 3452 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3453 }
3454 else
0544e6df 3455 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3456 return s;
79072805 3457 case 'n':
3280af22 3458 PL_minus_n = TRUE;
79072805
LW
3459 s++;
3460 return s;
3461 case 'p':
3280af22 3462 PL_minus_p = TRUE;
79072805
LW
3463 s++;
3464 return s;
3465 case 's':
f20b2998 3466 forbid_setid('s', FALSE);
3280af22 3467 PL_doswitches = TRUE;
79072805
LW
3468 s++;
3469 return s;
6537fe72 3470 case 't':
27a6968b 3471 case 'T':
dc6d7f5c 3472#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3473 /* silently ignore */
dc6d7f5c 3474#elif defined(NO_TAINT_SUPPORT)
3231f579 3475 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3476 "Cowardly refusing to run with -t or -T flags");
3477#else