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CommitLineData
4b88f280 1#line 2 "perl.c"
a0d0e21e
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2/* perl.c
3 *
737f4459 4 * Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
2eee27d7 5 * 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
010d7370 6 * by Larry Wall and others
a687059c 7 *
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
166f8a29
DM
25 */
26
c44493f1 27#if defined(PERL_IS_MINIPERL) && !defined(USE_SITECUSTOMIZE)
43c0c913
NC
28# define USE_SITECUSTOMIZE
29#endif
30
378cc40b 31#include "EXTERN.h"
864dbfa3 32#define PERL_IN_PERL_C
378cc40b 33#include "perl.h"
e3321bb0 34#include "patchlevel.h" /* for local_patches */
4a5df386 35#include "XSUB.h"
7b8dd5f4 36#include "charclass_invlists.h"
378cc40b 37
011f1a1a
JH
38#ifdef NETWARE
39#include "nwutil.h"
011f1a1a
JH
40#endif
41
2aa47728 42#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
bf357333
NC
43# ifdef I_SYSUIO
44# include <sys/uio.h>
45# endif
46
47union control_un {
48 struct cmsghdr cm;
49 char control[CMSG_SPACE(sizeof(int))];
50};
51
2aa47728
NC
52#endif
53
5311654c
JH
54#ifndef HZ
55# ifdef CLK_TCK
56# define HZ CLK_TCK
57# else
58# define HZ 60
59# endif
60#endif
61
7114a2d2 62#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) && !defined(PERL_MICRO)
20ce7b12 63char *getenv (char *); /* Usually in <stdlib.h> */
54310121
PP
64#endif
65
acfe0abc 66static I32 read_e_script(pTHX_ int idx, SV *buf_sv, int maxlen);
0cb96387 67
cc69b689 68#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
b24bc095 69# define validate_suid(rsfp) NOOP
cc69b689 70#else
b24bc095 71# define validate_suid(rsfp) S_validate_suid(aTHX_ rsfp)
a687059c 72#endif
8d063cd8 73
d6f07c05
AL
74#define CALL_BODY_SUB(myop) \
75 if (PL_op == (myop)) \
139d0ce6 76 PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); \
d6f07c05
AL
77 if (PL_op) \
78 CALLRUNOPS(aTHX);
79
80#define CALL_LIST_BODY(cv) \
81 PUSHMARK(PL_stack_sp); \
9a8aa25b 82 call_sv(MUTABLE_SV((cv)), G_EVAL|G_DISCARD|G_VOID);
d6f07c05 83
e6827a76 84static void
daa7d858 85S_init_tls_and_interp(PerlInterpreter *my_perl)
e6827a76 86{
27da23d5 87 dVAR;
e6827a76
NC
88 if (!PL_curinterp) {
89 PERL_SET_INTERP(my_perl);
3db8f154 90#if defined(USE_ITHREADS)
e6827a76
NC
91 INIT_THREADS;
92 ALLOC_THREAD_KEY;
93 PERL_SET_THX(my_perl);
94 OP_REFCNT_INIT;
e8570548 95 OP_CHECK_MUTEX_INIT;
71ad1b0c 96 HINTS_REFCNT_INIT;
e6827a76 97 MUTEX_INIT(&PL_dollarzero_mutex);
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DM
98 MUTEX_INIT(&PL_my_ctx_mutex);
99# endif
e6827a76 100 }
c0bce9aa
NC
101#if defined(USE_ITHREADS)
102 else
103#else
104 /* This always happens for non-ithreads */
105#endif
106 {
e6827a76
NC
107 PERL_SET_THX(my_perl);
108 }
109}
06d86050 110
cbec8ebe
DM
111
112/* these implement the PERL_SYS_INIT, PERL_SYS_INIT3, PERL_SYS_TERM macros */
113
114void
115Perl_sys_init(int* argc, char*** argv)
116{
4fc0badb 117 dVAR;
7918f24d
NC
118
119 PERL_ARGS_ASSERT_SYS_INIT;
120
cbec8ebe
DM
121 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
122 PERL_UNUSED_ARG(argv);
123 PERL_SYS_INIT_BODY(argc, argv);
124}
125
126void
127Perl_sys_init3(int* argc, char*** argv, char*** env)
128{
4fc0badb 129 dVAR;
7918f24d
NC
130
131 PERL_ARGS_ASSERT_SYS_INIT3;
132
cbec8ebe
DM
133 PERL_UNUSED_ARG(argc); /* may not be used depending on _BODY macro */
134 PERL_UNUSED_ARG(argv);
135 PERL_UNUSED_ARG(env);
136 PERL_SYS_INIT3_BODY(argc, argv, env);
137}
138
139void
88772978 140Perl_sys_term(void)
cbec8ebe 141{
4fc0badb 142 dVAR;
bf81751b
DM
143 if (!PL_veto_cleanup) {
144 PERL_SYS_TERM_BODY();
145 }
cbec8ebe
DM
146}
147
148
32e30700
GS
149#ifdef PERL_IMPLICIT_SYS
150PerlInterpreter *
7766f137
GS
151perl_alloc_using(struct IPerlMem* ipM, struct IPerlMem* ipMS,
152 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
32e30700
GS
153 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
154 struct IPerlDir* ipD, struct IPerlSock* ipS,
155 struct IPerlProc* ipP)
156{
157 PerlInterpreter *my_perl;
7918f24d
NC
158
159 PERL_ARGS_ASSERT_PERL_ALLOC_USING;
160
9f653bb5 161 /* Newx() needs interpreter, so call malloc() instead */
32e30700 162 my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
e6827a76 163 S_init_tls_and_interp(my_perl);
32e30700
GS
164 Zero(my_perl, 1, PerlInterpreter);
165 PL_Mem = ipM;
7766f137
GS
166 PL_MemShared = ipMS;
167 PL_MemParse = ipMP;
32e30700
GS
168 PL_Env = ipE;
169 PL_StdIO = ipStd;
170 PL_LIO = ipLIO;
171 PL_Dir = ipD;
172 PL_Sock = ipS;
173 PL_Proc = ipP;
7cb608b5 174 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
7766f137 175
32e30700
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176 return my_perl;
177}
178#else
954c1994
GS
179
180/*
ccfc67b7
JH
181=head1 Embedding Functions
182
954c1994
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183=for apidoc perl_alloc
184
185Allocates a new Perl interpreter. See L<perlembed>.
186
187=cut
188*/
189
93a17b20 190PerlInterpreter *
cea2e8a9 191perl_alloc(void)
79072805 192{
cea2e8a9 193 PerlInterpreter *my_perl;
79072805 194
9f653bb5 195 /* Newx() needs interpreter, so call malloc() instead */
e8ee3774 196 my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 197
e6827a76 198 S_init_tls_and_interp(my_perl);
7cb608b5 199#ifndef PERL_TRACK_MEMPOOL
07409e01 200 return (PerlInterpreter *) ZeroD(my_perl, 1, PerlInterpreter);
7cb608b5
NC
201#else
202 Zero(my_perl, 1, PerlInterpreter);
203 INIT_TRACK_MEMPOOL(PL_memory_debug_header, my_perl);
204 return my_perl;
205#endif
79072805 206}
32e30700 207#endif /* PERL_IMPLICIT_SYS */
79072805 208
954c1994
GS
209/*
210=for apidoc perl_construct
211
212Initializes a new Perl interpreter. See L<perlembed>.
213
214=cut
215*/
216
79072805 217void
0cb96387 218perl_construct(pTHXx)
79072805 219{
27da23d5 220 dVAR;
7918f24d
NC
221
222 PERL_ARGS_ASSERT_PERL_CONSTRUCT;
223
8990e307 224#ifdef MULTIPLICITY
54aff467 225 init_interp();
ac27b0f5 226 PL_perl_destruct_level = 1;
54aff467 227#else
7918f24d 228 PERL_UNUSED_ARG(my_perl);
54aff467
GS
229 if (PL_perl_destruct_level > 0)
230 init_interp();
231#endif
34caed6d
DM
232 PL_curcop = &PL_compiling; /* needed by ckWARN, right away */
233
75d476e2
SM
234#ifdef PERL_TRACE_OPS
235 Zero(PL_op_exec_cnt, OP_max+2, UV);
236#endif
237
0d96b528 238 init_constants();
34caed6d
DM
239
240 SvREADONLY_on(&PL_sv_placeholder);
fe54beba 241 SvREFCNT(&PL_sv_placeholder) = SvREFCNT_IMMORTAL;
34caed6d
DM
242
243 PL_sighandlerp = (Sighandler_t) Perl_sighandler;
ca0c25f6 244#ifdef PERL_USES_PL_PIDSTATUS
34caed6d 245 PL_pidstatus = newHV();
ca0c25f6 246#endif
79072805 247
396482e1 248 PL_rs = newSVpvs("\n");
dc92893f 249
cea2e8a9 250 init_stacks();
79072805 251
748a9306 252 init_ids();
a5f75d66 253
312caa8e 254 JMPENV_BOOTSTRAP;
f86702cc
PP
255 STATUS_ALL_SUCCESS;
256
0672f40e 257 init_i18nl10n(1);
0b5b802d 258
52686f2a
KW
259 /* Keep LC_NUMERIC in the C locale for backwards compatibility for XS
260 * modules. (Core operations that need the underlying locale change to it
261 * temporarily). An explicit call to POSIX::setlocale() still will cause
262 * XS module failures, but this is how it has been for a long time [perl
263 * #121317] */
264 SET_NUMERIC_STANDARD();
265
ab821d7f 266#if defined(LOCAL_PATCH_COUNT)
3280af22 267 PL_localpatches = local_patches; /* For possible -v */
ab821d7f
PP
268#endif
269
52853b95
GS
270#ifdef HAVE_INTERP_INTERN
271 sys_intern_init();
272#endif
273
3a1ee7e8 274 PerlIO_init(aTHX); /* Hook to IO system */
760ac839 275
3280af22
NIS
276 PL_fdpid = newAV(); /* for remembering popen pids by fd */
277 PL_modglobal = newHV(); /* pointers to per-interpreter module globals */
396482e1 278 PL_errors = newSVpvs("");
76f68e9b
MHM
279 sv_setpvs(PERL_DEBUG_PAD(0), ""); /* For regex debugging. */
280 sv_setpvs(PERL_DEBUG_PAD(1), ""); /* ext/re needs these */
281 sv_setpvs(PERL_DEBUG_PAD(2), ""); /* even without DEBUGGING. */
1fcf4c12 282#ifdef USE_ITHREADS
402d2eb1
NC
283 /* First entry is a list of empty elements. It needs to be initialised
284 else all hell breaks loose in S_find_uninit_var(). */
285 Perl_av_create_and_push(aTHX_ &PL_regex_padav, newSVpvs(""));
13137afc 286 PL_regex_pad = AvARRAY(PL_regex_padav);
d4d03940 287 Newxz(PL_stashpad, PL_stashpadmax, HV *);
1fcf4c12 288#endif
e5dd39fc 289#ifdef USE_REENTRANT_API
59bd0823 290 Perl_reentrant_init(aTHX);
e5dd39fc 291#endif
7dc86639
YO
292#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT)
293 /* [perl #22371] Algorimic Complexity Attack on Perl 5.6.1, 5.8.0
294 * This MUST be done before any hash stores or fetches take place.
295 * If you set PL_hash_seed (and presumably also PL_hash_seed_set)
296 * yourself, it is your responsibility to provide a good random seed!
297 * You can also define PERL_HASH_SEED in compile time, see hv.h.
298 *
299 * XXX: fix this comment */
300 if (PL_hash_seed_set == FALSE) {
301 Perl_get_hash_seed(aTHX_ PL_hash_seed);
302 PL_hash_seed_set= TRUE;
303 }
304#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3d47000e
AB
305
306 /* Note that strtab is a rather special HV. Assumptions are made
307 about not iterating on it, and not adding tie magic to it.
308 It is properly deallocated in perl_destruct() */
309 PL_strtab = newHV();
310
3d47000e
AB
311 HvSHAREKEYS_off(PL_strtab); /* mandatory */
312 hv_ksplit(PL_strtab, 512);
313
a38ab475
RZ
314 Zero(PL_sv_consts, SV_CONSTS_COUNT, SV*);
315
0631ea03
AB
316#if defined(__DYNAMIC__) && (defined(NeXT) || defined(__NeXT__))
317 _dyld_lookup_and_bind
318 ("__environ", (unsigned long *) &environ_pointer, NULL);
319#endif /* environ */
320
2f42fcb0
JH
321#ifndef PERL_MICRO
322# ifdef USE_ENVIRON_ARRAY
0631ea03 323 PL_origenviron = environ;
2f42fcb0 324# endif
0631ea03
AB
325#endif
326
5311654c 327 /* Use sysconf(_SC_CLK_TCK) if available, if not
dbc1d986 328 * available or if the sysconf() fails, use the HZ.
27da23d5
JH
329 * The HZ if not originally defined has been by now
330 * been defined as CLK_TCK, if available. */
b6c36746 331#if defined(HAS_SYSCONF) && defined(_SC_CLK_TCK)
5311654c
JH
332 PL_clocktick = sysconf(_SC_CLK_TCK);
333 if (PL_clocktick <= 0)
334#endif
335 PL_clocktick = HZ;
336
081fc587
AB
337 PL_stashcache = newHV();
338
e8e3635e 339 PL_patchlevel = newSVpvs("v" PERL_VERSION_STRING);
1e8125c6 340 PL_apiversion = newSVpvs("v" PERL_API_VERSION_STRING);
d7aa5382 341
27da23d5
JH
342#ifdef HAS_MMAP
343 if (!PL_mmap_page_size) {
344#if defined(HAS_SYSCONF) && (defined(_SC_PAGESIZE) || defined(_SC_MMAP_PAGE_SIZE))
345 {
346 SETERRNO(0, SS_NORMAL);
347# ifdef _SC_PAGESIZE
348 PL_mmap_page_size = sysconf(_SC_PAGESIZE);
349# else
350 PL_mmap_page_size = sysconf(_SC_MMAP_PAGE_SIZE);
351# endif
352 if ((long) PL_mmap_page_size < 0) {
353 if (errno) {
44f8325f 354 SV * const error = ERRSV;
d4c19fe8 355 SvUPGRADE(error, SVt_PV);
0510663f 356 Perl_croak(aTHX_ "panic: sysconf: %s", SvPV_nolen_const(error));
27da23d5
JH
357 }
358 else
359 Perl_croak(aTHX_ "panic: sysconf: pagesize unknown");
360 }
361 }
362#else
363# ifdef HAS_GETPAGESIZE
364 PL_mmap_page_size = getpagesize();
365# else
366# if defined(I_SYS_PARAM) && defined(PAGESIZE)
367 PL_mmap_page_size = PAGESIZE; /* compiletime, bad */
368# endif
369# endif
370#endif
371 if (PL_mmap_page_size <= 0)
372 Perl_croak(aTHX_ "panic: bad pagesize %" IVdf,
373 (IV) PL_mmap_page_size);
374 }
375#endif /* HAS_MMAP */
376
377#if defined(HAS_TIMES) && defined(PERL_NEED_TIMESBASE)
378 PL_timesbase.tms_utime = 0;
379 PL_timesbase.tms_stime = 0;
380 PL_timesbase.tms_cutime = 0;
381 PL_timesbase.tms_cstime = 0;
382#endif
383
7d113631
NC
384 PL_osname = Perl_savepvn(aTHX_ STR_WITH_LEN(OSNAME));
385
a3e6e81e 386 PL_registered_mros = newHV();
9e169432
NC
387 /* Start with 1 bucket, for DFS. It's unlikely we'll need more. */
388 HvMAX(PL_registered_mros) = 0;
a3e6e81e 389
7b8dd5f4
KW
390 PL_XPosix_ptrs[_CC_ASCII] = _new_invlist_C_array(ASCII_invlist);
391 PL_XPosix_ptrs[_CC_ALPHANUMERIC] = _new_invlist_C_array(XPosixAlnum_invlist);
392 PL_XPosix_ptrs[_CC_ALPHA] = _new_invlist_C_array(XPosixAlpha_invlist);
393 PL_XPosix_ptrs[_CC_BLANK] = _new_invlist_C_array(XPosixBlank_invlist);
394 PL_XPosix_ptrs[_CC_CASED] = _new_invlist_C_array(Cased_invlist);
395 PL_XPosix_ptrs[_CC_CNTRL] = _new_invlist_C_array(XPosixCntrl_invlist);
396 PL_XPosix_ptrs[_CC_DIGIT] = _new_invlist_C_array(XPosixDigit_invlist);
397 PL_XPosix_ptrs[_CC_GRAPH] = _new_invlist_C_array(XPosixGraph_invlist);
398 PL_XPosix_ptrs[_CC_LOWER] = _new_invlist_C_array(XPosixLower_invlist);
399 PL_XPosix_ptrs[_CC_PRINT] = _new_invlist_C_array(XPosixPrint_invlist);
400 PL_XPosix_ptrs[_CC_PUNCT] = _new_invlist_C_array(XPosixPunct_invlist);
401 PL_XPosix_ptrs[_CC_SPACE] = _new_invlist_C_array(XPerlSpace_invlist);
402 PL_XPosix_ptrs[_CC_PSXSPC] = _new_invlist_C_array(XPosixSpace_invlist);
403 PL_XPosix_ptrs[_CC_UPPER] = _new_invlist_C_array(XPosixUpper_invlist);
404 PL_XPosix_ptrs[_CC_VERTSPACE] = _new_invlist_C_array(VertSpace_invlist);
405 PL_XPosix_ptrs[_CC_WORDCHAR] = _new_invlist_C_array(XPosixWord_invlist);
406 PL_XPosix_ptrs[_CC_XDIGIT] = _new_invlist_C_array(XPosixXDigit_invlist);
407
8990e307 408 ENTER;
79072805
LW
409}
410
954c1994 411/*
62375a60
NIS
412=for apidoc nothreadhook
413
414Stub that provides thread hook for perl_destruct when there are
415no threads.
416
417=cut
418*/
419
420int
4e9e3734 421Perl_nothreadhook(pTHX)
62375a60 422{
96a5add6 423 PERL_UNUSED_CONTEXT;
62375a60
NIS
424 return 0;
425}
426
41e4abd8
NC
427#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
428void
429Perl_dump_sv_child(pTHX_ SV *sv)
430{
431 ssize_t got;
bf357333
NC
432 const int sock = PL_dumper_fd;
433 const int debug_fd = PerlIO_fileno(Perl_debug_log);
bf357333
NC
434 union control_un control;
435 struct msghdr msg;
808ad2d0 436 struct iovec vec[2];
bf357333 437 struct cmsghdr *cmptr;
808ad2d0
NC
438 int returned_errno;
439 unsigned char buffer[256];
41e4abd8 440
7918f24d
NC
441 PERL_ARGS_ASSERT_DUMP_SV_CHILD;
442
bf357333 443 if(sock == -1 || debug_fd == -1)
41e4abd8
NC
444 return;
445
446 PerlIO_flush(Perl_debug_log);
447
bf357333
NC
448 /* All these shenanigans are to pass a file descriptor over to our child for
449 it to dump out to. We can't let it hold open the file descriptor when it
450 forks, as the file descriptor it will dump to can turn out to be one end
451 of pipe that some other process will wait on for EOF. (So as it would
b293a5f8 452 be open, the wait would be forever.) */
bf357333
NC
453
454 msg.msg_control = control.control;
455 msg.msg_controllen = sizeof(control.control);
456 /* We're a connected socket so we don't need a destination */
457 msg.msg_name = NULL;
458 msg.msg_namelen = 0;
459 msg.msg_iov = vec;
808ad2d0 460 msg.msg_iovlen = 1;
bf357333
NC
461
462 cmptr = CMSG_FIRSTHDR(&msg);
463 cmptr->cmsg_len = CMSG_LEN(sizeof(int));
464 cmptr->cmsg_level = SOL_SOCKET;
465 cmptr->cmsg_type = SCM_RIGHTS;
466 *((int *)CMSG_DATA(cmptr)) = 1;
467
468 vec[0].iov_base = (void*)&sv;
469 vec[0].iov_len = sizeof(sv);
470 got = sendmsg(sock, &msg, 0);
41e4abd8
NC
471
472 if(got < 0) {
bf357333 473 perror("Debug leaking scalars parent sendmsg failed");
41e4abd8
NC
474 abort();
475 }
bf357333
NC
476 if(got < sizeof(sv)) {
477 perror("Debug leaking scalars parent short sendmsg");
41e4abd8
NC
478 abort();
479 }
480
808ad2d0
NC
481 /* Return protocol is
482 int: errno value
483 unsigned char: length of location string (0 for empty)
484 unsigned char*: string (not terminated)
485 */
486 vec[0].iov_base = (void*)&returned_errno;
487 vec[0].iov_len = sizeof(returned_errno);
488 vec[1].iov_base = buffer;
489 vec[1].iov_len = 1;
490
491 got = readv(sock, vec, 2);
41e4abd8
NC
492
493 if(got < 0) {
494 perror("Debug leaking scalars parent read failed");
808ad2d0 495 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
496 abort();
497 }
808ad2d0 498 if(got < sizeof(returned_errno) + 1) {
41e4abd8 499 perror("Debug leaking scalars parent short read");
808ad2d0 500 PerlIO_flush(PerlIO_stderr());
41e4abd8
NC
501 abort();
502 }
503
808ad2d0
NC
504 if (*buffer) {
505 got = read(sock, buffer + 1, *buffer);
506 if(got < 0) {
507 perror("Debug leaking scalars parent read 2 failed");
508 PerlIO_flush(PerlIO_stderr());
509 abort();
510 }
511
512 if(got < *buffer) {
513 perror("Debug leaking scalars parent short read 2");
514 PerlIO_flush(PerlIO_stderr());
515 abort();
516 }
517 }
518
519 if (returned_errno || *buffer) {
520 Perl_warn(aTHX_ "Debug leaking scalars child failed%s%.*s with errno"
521 " %d: %s", (*buffer ? " at " : ""), (int) *buffer, buffer + 1,
0c0d42ff 522 returned_errno, Strerror(returned_errno));
41e4abd8
NC
523 }
524}
525#endif
526
62375a60 527/*
954c1994
GS
528=for apidoc perl_destruct
529
530Shuts down a Perl interpreter. See L<perlembed>.
531
532=cut
533*/
534
31d77e54 535int
0cb96387 536perl_destruct(pTHXx)
79072805 537{
27da23d5 538 dVAR;
be2ea8ed 539 VOL signed char destruct_level; /* see possible values in intrpvar.h */
a0d0e21e 540 HV *hv;
2aa47728 541#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
2aa47728
NC
542 pid_t child;
543#endif
9c0b6888 544 int i;
8990e307 545
7918f24d
NC
546 PERL_ARGS_ASSERT_PERL_DESTRUCT;
547#ifndef MULTIPLICITY
ed6c66dd 548 PERL_UNUSED_ARG(my_perl);
7918f24d 549#endif
9d4ba2ae 550
3d22c4f0
GG
551 assert(PL_scopestack_ix == 1);
552
7766f137
GS
553 /* wait for all pseudo-forked children to finish */
554 PERL_WAIT_FOR_CHILDREN;
555
3280af22 556 destruct_level = PL_perl_destruct_level;
36e77d41 557#if defined(DEBUGGING) || defined(PERL_TRACK_MEMPOOL)
4633a7c4 558 {
9d4ba2ae
AL
559 const char * const s = PerlEnv_getenv("PERL_DESTRUCT_LEVEL");
560 if (s) {
f5199772 561 const int i = atoi(s);
36e77d41
DD
562#ifdef DEBUGGING
563 if (destruct_level < i) destruct_level = i;
564#endif
565#ifdef PERL_TRACK_MEMPOOL
f5199772
KW
566 /* RT #114496, for perl_free */
567 PL_perl_destruct_level = i;
36e77d41 568#endif
5f05dabc 569 }
4633a7c4
LW
570 }
571#endif
572
27da23d5 573 if (PL_exit_flags & PERL_EXIT_DESTRUCT_END) {
f3faeb53
AB
574 dJMPENV;
575 int x = 0;
576
577 JMPENV_PUSH(x);
1b6737cc 578 PERL_UNUSED_VAR(x);
9ebf26ad 579 if (PL_endav && !PL_minus_c) {
ca7b837b 580 PERL_SET_PHASE(PERL_PHASE_END);
f3faeb53 581 call_list(PL_scopestack_ix, PL_endav);
9ebf26ad 582 }
f3faeb53 583 JMPENV_POP;
26f423df 584 }
f3faeb53 585 LEAVE;
a0d0e21e 586 FREETMPS;
3d22c4f0 587 assert(PL_scopestack_ix == 0);
a0d0e21e 588
e00b64d4 589 /* Need to flush since END blocks can produce output */
f13a2bc0 590 my_fflush_all();
e00b64d4 591
75d476e2
SM
592#ifdef PERL_TRACE_OPS
593 /* If we traced all Perl OP usage, report and clean up */
594 PerlIO_printf(Perl_debug_log, "Trace of all OPs executed:\n");
595 for (i = 0; i <= OP_max; ++i) {
596 PerlIO_printf(Perl_debug_log, " %s: %"UVuf"\n", PL_op_name[i], PL_op_exec_cnt[i]);
597 PL_op_exec_cnt[i] = 0;
598 }
599 /* Utility slot for easily doing little tracing experiments in the runloop: */
600 if (PL_op_exec_cnt[OP_max+1] != 0)
601 PerlIO_printf(Perl_debug_log, " SPECIAL: %"UVuf"\n", PL_op_exec_cnt[OP_max+1]);
602 PerlIO_printf(Perl_debug_log, "\n");
603#endif
604
605
16c91539 606 if (PL_threadhook(aTHX)) {
62375a60 607 /* Threads hook has vetoed further cleanup */
c301d606 608 PL_veto_cleanup = TRUE;
37038d91 609 return STATUS_EXIT;
62375a60
NIS
610 }
611
2aa47728
NC
612#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
613 if (destruct_level != 0) {
614 /* Fork here to create a child. Our child's job is to preserve the
615 state of scalars prior to destruction, so that we can instruct it
616 to dump any scalars that we later find have leaked.
617 There's no subtlety in this code - it assumes POSIX, and it doesn't
618 fail gracefully */
619 int fd[2];
620
621 if(socketpair(AF_UNIX, SOCK_STREAM, 0, fd)) {
622 perror("Debug leaking scalars socketpair failed");
623 abort();
624 }
625
626 child = fork();
627 if(child == -1) {
628 perror("Debug leaking scalars fork failed");
629 abort();
630 }
631 if (!child) {
632 /* We are the child */
3125a5a4
NC
633 const int sock = fd[1];
634 const int debug_fd = PerlIO_fileno(Perl_debug_log);
635 int f;
808ad2d0
NC
636 const char *where;
637 /* Our success message is an integer 0, and a char 0 */
b61433a9 638 static const char success[sizeof(int) + 1] = {0};
3125a5a4 639
2aa47728 640 close(fd[0]);
2aa47728 641
3125a5a4
NC
642 /* We need to close all other file descriptors otherwise we end up
643 with interesting hangs, where the parent closes its end of a
644 pipe, and sits waiting for (another) child to terminate. Only
645 that child never terminates, because it never gets EOF, because
bf357333
NC
646 we also have the far end of the pipe open. We even need to
647 close the debugging fd, because sometimes it happens to be one
648 end of a pipe, and a process is waiting on the other end for
649 EOF. Normally it would be closed at some point earlier in
650 destruction, but if we happen to cause the pipe to remain open,
651 EOF never occurs, and we get an infinite hang. Hence all the
652 games to pass in a file descriptor if it's actually needed. */
3125a5a4
NC
653
654 f = sysconf(_SC_OPEN_MAX);
655 if(f < 0) {
808ad2d0
NC
656 where = "sysconf failed";
657 goto abort;
3125a5a4
NC
658 }
659 while (f--) {
660 if (f == sock)
661 continue;
3125a5a4
NC
662 close(f);
663 }
664
2aa47728
NC
665 while (1) {
666 SV *target;
bf357333
NC
667 union control_un control;
668 struct msghdr msg;
669 struct iovec vec[1];
670 struct cmsghdr *cmptr;
671 ssize_t got;
672 int got_fd;
673
674 msg.msg_control = control.control;
675 msg.msg_controllen = sizeof(control.control);
676 /* We're a connected socket so we don't need a source */
677 msg.msg_name = NULL;
678 msg.msg_namelen = 0;
679 msg.msg_iov = vec;
680 msg.msg_iovlen = sizeof(vec)/sizeof(vec[0]);
681
682 vec[0].iov_base = (void*)&target;
683 vec[0].iov_len = sizeof(target);
684
685 got = recvmsg(sock, &msg, 0);
2aa47728
NC
686
687 if(got == 0)
688 break;
689 if(got < 0) {
808ad2d0
NC
690 where = "recv failed";
691 goto abort;
2aa47728
NC
692 }
693 if(got < sizeof(target)) {
808ad2d0
NC
694 where = "short recv";
695 goto abort;
2aa47728 696 }
bf357333 697
808ad2d0
NC
698 if(!(cmptr = CMSG_FIRSTHDR(&msg))) {
699 where = "no cmsg";
700 goto abort;
701 }
702 if(cmptr->cmsg_len != CMSG_LEN(sizeof(int))) {
703 where = "wrong cmsg_len";
704 goto abort;
705 }
706 if(cmptr->cmsg_level != SOL_SOCKET) {
707 where = "wrong cmsg_level";
708 goto abort;
709 }
710 if(cmptr->cmsg_type != SCM_RIGHTS) {
711 where = "wrong cmsg_type";
712 goto abort;
713 }
bf357333
NC
714
715 got_fd = *(int*)CMSG_DATA(cmptr);
716 /* For our last little bit of trickery, put the file descriptor
717 back into Perl_debug_log, as if we never actually closed it
718 */
808ad2d0
NC
719 if(got_fd != debug_fd) {
720 if (dup2(got_fd, debug_fd) == -1) {
721 where = "dup2";
722 goto abort;
723 }
724 }
2aa47728 725 sv_dump(target);
bf357333 726
2aa47728
NC
727 PerlIO_flush(Perl_debug_log);
728
808ad2d0 729 got = write(sock, &success, sizeof(success));
2aa47728
NC
730
731 if(got < 0) {
808ad2d0
NC
732 where = "write failed";
733 goto abort;
2aa47728 734 }
808ad2d0
NC
735 if(got < sizeof(success)) {
736 where = "short write";
737 goto abort;
2aa47728
NC
738 }
739 }
740 _exit(0);
808ad2d0
NC
741 abort:
742 {
743 int send_errno = errno;
744 unsigned char length = (unsigned char) strlen(where);
745 struct iovec failure[3] = {
746 {(void*)&send_errno, sizeof(send_errno)},
747 {&length, 1},
748 {(void*)where, length}
749 };
750 int got = writev(sock, failure, 3);
751 /* Bad news travels fast. Faster than data. We'll get a SIGPIPE
752 in the parent if we try to read from the socketpair after the
753 child has exited, even if there was data to read.
754 So sleep a bit to give the parent a fighting chance of
755 reading the data. */
756 sleep(2);
757 _exit((got == -1) ? errno : 0);
758 }
bf357333 759 /* End of child. */
2aa47728 760 }
41e4abd8 761 PL_dumper_fd = fd[0];
2aa47728
NC
762 close(fd[1]);
763 }
764#endif
765
ff0cee69
PP
766 /* We must account for everything. */
767
768 /* Destroy the main CV and syntax tree */
37e77c23
FC
769 /* Set PL_curcop now, because destroying ops can cause new SVs
770 to be generated in Perl_pad_swipe, and when running with
771 -DDEBUG_LEAKING_SCALARS they expect PL_curcop to point to a valid
772 op from which the filename structure member is copied. */
17fbfdf6 773 PL_curcop = &PL_compiling;
3280af22 774 if (PL_main_root) {
4e380990
DM
775 /* ensure comppad/curpad to refer to main's pad */
776 if (CvPADLIST(PL_main_cv)) {
777 PAD_SET_CUR_NOSAVE(CvPADLIST(PL_main_cv), 1);
325e1816 778 PL_comppad_name = PadlistNAMES(CvPADLIST(PL_main_cv));
4e380990 779 }
3280af22 780 op_free(PL_main_root);
5f66b61c 781 PL_main_root = NULL;
a0d0e21e 782 }
5f66b61c 783 PL_main_start = NULL;
aac9d523
DM
784 /* note that PL_main_cv isn't usually actually freed at this point,
785 * due to the CvOUTSIDE refs from subs compiled within it. It will
786 * get freed once all the subs are freed in sv_clean_all(), for
787 * destruct_level > 0 */
3280af22 788 SvREFCNT_dec(PL_main_cv);
601f1833 789 PL_main_cv = NULL;
ca7b837b 790 PERL_SET_PHASE(PERL_PHASE_DESTRUCT);
ff0cee69 791
13621cfb
NIS
792 /* Tell PerlIO we are about to tear things apart in case
793 we have layers which are using resources that should
794 be cleaned up now.
795 */
796
797 PerlIO_destruct(aTHX);
798
ddf23d4a
SM
799 /*
800 * Try to destruct global references. We do this first so that the
801 * destructors and destructees still exist. Some sv's might remain.
802 * Non-referenced objects are on their own.
803 */
804 sv_clean_objs();
8990e307 805
5cd24f17 806 /* unhook hooks which will soon be, or use, destroyed data */
3280af22 807 SvREFCNT_dec(PL_warnhook);
a0714e2c 808 PL_warnhook = NULL;
3280af22 809 SvREFCNT_dec(PL_diehook);
a0714e2c 810 PL_diehook = NULL;
5cd24f17 811
4b556e6c 812 /* call exit list functions */
3280af22 813 while (PL_exitlistlen-- > 0)
acfe0abc 814 PL_exitlist[PL_exitlistlen].fn(aTHX_ PL_exitlist[PL_exitlistlen].ptr);
4b556e6c 815
3280af22 816 Safefree(PL_exitlist);
4b556e6c 817
1c4916e5
CB
818 PL_exitlist = NULL;
819 PL_exitlistlen = 0;
820
a3e6e81e
NC
821 SvREFCNT_dec(PL_registered_mros);
822
551a8b83 823 /* jettison our possibly duplicated environment */
4b647fb0
DM
824 /* if PERL_USE_SAFE_PUTENV is defined environ will not have been copied
825 * so we certainly shouldn't free it here
826 */
2f42fcb0 827#ifndef PERL_MICRO
4b647fb0 828#if defined(USE_ENVIRON_ARRAY) && !defined(PERL_USE_SAFE_PUTENV)
50acdf95 829 if (environ != PL_origenviron && !PL_use_safe_putenv
4efc5df6
GS
830#ifdef USE_ITHREADS
831 /* only main thread can free environ[0] contents */
832 && PL_curinterp == aTHX
833#endif
834 )
835 {
551a8b83
JH
836 I32 i;
837
838 for (i = 0; environ[i]; i++)
4b420006 839 safesysfree(environ[i]);
0631ea03 840
4b420006
JH
841 /* Must use safesysfree() when working with environ. */
842 safesysfree(environ);
551a8b83
JH
843
844 environ = PL_origenviron;
845 }
846#endif
2f42fcb0 847#endif /* !PERL_MICRO */
551a8b83 848
30985c42
JH
849 if (destruct_level == 0) {
850
851 DEBUG_P(debprofdump());
852
853#if defined(PERLIO_LAYERS)
854 /* No more IO - including error messages ! */
855 PerlIO_cleanup(aTHX);
856#endif
857
858 CopFILE_free(&PL_compiling);
30985c42
JH
859
860 /* The exit() function will do everything that needs doing. */
861 return STATUS_EXIT;
862 }
863
9fa9f06b
KW
864 /* Below, do clean up for when PERL_DESTRUCT_LEVEL is not 0 */
865
5f8cb046
DM
866#ifdef USE_ITHREADS
867 /* the syntax tree is shared between clones
868 * so op_free(PL_main_root) only ReREFCNT_dec's
869 * REGEXPs in the parent interpreter
870 * we need to manually ReREFCNT_dec for the clones
871 */
0547a729
DM
872 {
873 I32 i = AvFILLp(PL_regex_padav);
874 SV **ary = AvARRAY(PL_regex_padav);
875
876 for (; i; i--) {
877 SvREFCNT_dec(ary[i]);
878 ary[i] = &PL_sv_undef;
879 }
880 }
5f8cb046
DM
881#endif
882
0547a729 883
ad64d0ec 884 SvREFCNT_dec(MUTABLE_SV(PL_stashcache));
081fc587
AB
885 PL_stashcache = NULL;
886
5f05dabc
PP
887 /* loosen bonds of global variables */
888
2f9285f8
DM
889 /* XXX can PL_parser still be non-null here? */
890 if(PL_parser && PL_parser->rsfp) {
891 (void)PerlIO_close(PL_parser->rsfp);
892 PL_parser->rsfp = NULL;
8ebc5c01
PP
893 }
894
84386e14
RGS
895 if (PL_minus_F) {
896 Safefree(PL_splitstr);
897 PL_splitstr = NULL;
898 }
899
8ebc5c01 900 /* switches */
3280af22
NIS
901 PL_minus_n = FALSE;
902 PL_minus_p = FALSE;
903 PL_minus_l = FALSE;
904 PL_minus_a = FALSE;
905 PL_minus_F = FALSE;
906 PL_doswitches = FALSE;
599cee73 907 PL_dowarn = G_WARN_OFF;
1a904fc8 908#ifdef PERL_SAWAMPERSAND
d3b97530 909 PL_sawampersand = 0; /* must save all match strings */
1a904fc8 910#endif
3280af22
NIS
911 PL_unsafe = FALSE;
912
913 Safefree(PL_inplace);
bd61b366 914 PL_inplace = NULL;
a7cb1f99 915 SvREFCNT_dec(PL_patchlevel);
1e8125c6 916 SvREFCNT_dec(PL_apiversion);
3280af22
NIS
917
918 if (PL_e_script) {
919 SvREFCNT_dec(PL_e_script);
a0714e2c 920 PL_e_script = NULL;
8ebc5c01
PP
921 }
922
bf9cdc68
RG
923 PL_perldb = 0;
924
8ebc5c01
PP
925 /* magical thingies */
926
e23d9e2f
CS
927 SvREFCNT_dec(PL_ofsgv); /* *, */
928 PL_ofsgv = NULL;
5f05dabc 929
7889fe52 930 SvREFCNT_dec(PL_ors_sv); /* $\ */
a0714e2c 931 PL_ors_sv = NULL;
8ebc5c01 932
3280af22 933 SvREFCNT_dec(PL_rs); /* $/ */
a0714e2c 934 PL_rs = NULL;
dc92893f 935
d33b2eba 936 Safefree(PL_osname); /* $^O */
bd61b366 937 PL_osname = NULL;
5f05dabc 938
3280af22 939 SvREFCNT_dec(PL_statname);
a0714e2c
SS
940 PL_statname = NULL;
941 PL_statgv = NULL;
5f05dabc 942
8ebc5c01
PP
943 /* defgv, aka *_ should be taken care of elsewhere */
944
7d5ea4e7
GS
945 /* float buffer */
946 Safefree(PL_efloatbuf);
bd61b366 947 PL_efloatbuf = NULL;
7d5ea4e7
GS
948 PL_efloatsize = 0;
949
8ebc5c01 950 /* startup and shutdown function lists */
3280af22 951 SvREFCNT_dec(PL_beginav);
5a837c8f 952 SvREFCNT_dec(PL_beginav_save);
3280af22 953 SvREFCNT_dec(PL_endav);
7d30b5c4 954 SvREFCNT_dec(PL_checkav);
ece599bd 955 SvREFCNT_dec(PL_checkav_save);
3c10abe3
AG
956 SvREFCNT_dec(PL_unitcheckav);
957 SvREFCNT_dec(PL_unitcheckav_save);
3280af22 958 SvREFCNT_dec(PL_initav);
7d49f689
NC
959 PL_beginav = NULL;
960 PL_beginav_save = NULL;
961 PL_endav = NULL;
962 PL_checkav = NULL;
963 PL_checkav_save = NULL;
3c10abe3
AG
964 PL_unitcheckav = NULL;
965 PL_unitcheckav_save = NULL;
7d49f689 966 PL_initav = NULL;
5618dfe8 967
8ebc5c01 968 /* shortcuts just get cleared */
a0714e2c
SS
969 PL_hintgv = NULL;
970 PL_errgv = NULL;
a0714e2c
SS
971 PL_argvoutgv = NULL;
972 PL_stdingv = NULL;
973 PL_stderrgv = NULL;
974 PL_last_in_gv = NULL;
a0714e2c
SS
975 PL_DBsingle = NULL;
976 PL_DBtrace = NULL;
977 PL_DBsignal = NULL;
601f1833 978 PL_DBcv = NULL;
7d49f689 979 PL_dbargs = NULL;
5c284bb0 980 PL_debstash = NULL;
8ebc5c01 981
cf93a474 982 SvREFCNT_dec(PL_envgv);
f03015cd 983 SvREFCNT_dec(PL_incgv);
722fa0e9 984 SvREFCNT_dec(PL_argvgv);
475b1e90 985 SvREFCNT_dec(PL_replgv);
8cece913
FC
986 SvREFCNT_dec(PL_DBgv);
987 SvREFCNT_dec(PL_DBline);
988 SvREFCNT_dec(PL_DBsub);
cf93a474 989 PL_envgv = NULL;
f03015cd 990 PL_incgv = NULL;
722fa0e9 991 PL_argvgv = NULL;
475b1e90 992 PL_replgv = NULL;
8cece913
FC
993 PL_DBgv = NULL;
994 PL_DBline = NULL;
995 PL_DBsub = NULL;
996
7a1c5554 997 SvREFCNT_dec(PL_argvout_stack);
7d49f689 998 PL_argvout_stack = NULL;
8ebc5c01 999
5c831c24 1000 SvREFCNT_dec(PL_modglobal);
5c284bb0 1001 PL_modglobal = NULL;
5c831c24 1002 SvREFCNT_dec(PL_preambleav);
7d49f689 1003 PL_preambleav = NULL;
5c831c24 1004 SvREFCNT_dec(PL_subname);
a0714e2c 1005 PL_subname = NULL;
ca0c25f6 1006#ifdef PERL_USES_PL_PIDSTATUS
5c831c24 1007 SvREFCNT_dec(PL_pidstatus);
5c284bb0 1008 PL_pidstatus = NULL;
ca0c25f6 1009#endif
5c831c24 1010 SvREFCNT_dec(PL_toptarget);
a0714e2c 1011 PL_toptarget = NULL;
5c831c24 1012 SvREFCNT_dec(PL_bodytarget);
a0714e2c
SS
1013 PL_bodytarget = NULL;
1014 PL_formtarget = NULL;
5c831c24 1015
d33b2eba 1016 /* free locale stuff */
b9582b6a 1017#ifdef USE_LOCALE_COLLATE
d33b2eba 1018 Safefree(PL_collation_name);
bd61b366 1019 PL_collation_name = NULL;
b9582b6a 1020#endif
d33b2eba 1021
b9582b6a 1022#ifdef USE_LOCALE_NUMERIC
d33b2eba 1023 Safefree(PL_numeric_name);
bd61b366 1024 PL_numeric_name = NULL;
a453c169 1025 SvREFCNT_dec(PL_numeric_radix_sv);
a0714e2c 1026 PL_numeric_radix_sv = NULL;
b9582b6a 1027#endif
d33b2eba 1028
9c0b6888
KW
1029 /* clear character classes */
1030 for (i = 0; i < POSIX_SWASH_COUNT; i++) {
1031 SvREFCNT_dec(PL_utf8_swash_ptrs[i]);
1032 PL_utf8_swash_ptrs[i] = NULL;
1033 }
5c831c24
GS
1034 SvREFCNT_dec(PL_utf8_mark);
1035 SvREFCNT_dec(PL_utf8_toupper);
4dbdbdc2 1036 SvREFCNT_dec(PL_utf8_totitle);
5c831c24 1037 SvREFCNT_dec(PL_utf8_tolower);
b4e400f9 1038 SvREFCNT_dec(PL_utf8_tofold);
82686b01
JH
1039 SvREFCNT_dec(PL_utf8_idstart);
1040 SvREFCNT_dec(PL_utf8_idcont);
c60f4405 1041 SvREFCNT_dec(PL_utf8_foldable);
2726813d 1042 SvREFCNT_dec(PL_utf8_foldclosures);
9fa9f06b
KW
1043 SvREFCNT_dec(PL_AboveLatin1);
1044 SvREFCNT_dec(PL_UpperLatin1);
1045 SvREFCNT_dec(PL_Latin1);
1046 SvREFCNT_dec(PL_NonL1NonFinalFold);
1047 SvREFCNT_dec(PL_HasMultiCharFold);
a0714e2c
SS
1048 PL_utf8_mark = NULL;
1049 PL_utf8_toupper = NULL;
1050 PL_utf8_totitle = NULL;
1051 PL_utf8_tolower = NULL;
1052 PL_utf8_tofold = NULL;
1053 PL_utf8_idstart = NULL;
1054 PL_utf8_idcont = NULL;
2726813d 1055 PL_utf8_foldclosures = NULL;
9fa9f06b
KW
1056 PL_AboveLatin1 = NULL;
1057 PL_HasMultiCharFold = NULL;
1058 PL_Latin1 = NULL;
1059 PL_NonL1NonFinalFold = NULL;
1060 PL_UpperLatin1 = NULL;
86f72d56 1061 for (i = 0; i < POSIX_CC_COUNT; i++) {
cac6e0ca
KW
1062 SvREFCNT_dec(PL_XPosix_ptrs[i]);
1063 PL_XPosix_ptrs[i] = NULL;
86f72d56 1064 }
5c831c24 1065
971a9dd3 1066 if (!specialWARN(PL_compiling.cop_warnings))
72dc9ed5 1067 PerlMemShared_free(PL_compiling.cop_warnings);
a0714e2c 1068 PL_compiling.cop_warnings = NULL;
20439bc7
Z
1069 cophh_free(CopHINTHASH_get(&PL_compiling));
1070 CopHINTHASH_set(&PL_compiling, cophh_new_empty());
05ec9bb3 1071 CopFILE_free(&PL_compiling);
5c831c24 1072
a0d0e21e 1073 /* Prepare to destruct main symbol table. */
5f05dabc 1074
3280af22 1075 hv = PL_defstash;
ca556bcd
DM
1076 /* break ref loop *:: <=> %:: */
1077 (void)hv_delete(hv, "main::", 6, G_DISCARD);
3280af22 1078 PL_defstash = 0;
a0d0e21e 1079 SvREFCNT_dec(hv);
5c831c24 1080 SvREFCNT_dec(PL_curstname);
a0714e2c 1081 PL_curstname = NULL;
a0d0e21e 1082
5a844595
GS
1083 /* clear queued errors */
1084 SvREFCNT_dec(PL_errors);
a0714e2c 1085 PL_errors = NULL;
5a844595 1086
dd69841b
BB
1087 SvREFCNT_dec(PL_isarev);
1088
a0d0e21e 1089 FREETMPS;
9b387841 1090 if (destruct_level >= 2) {
3280af22 1091 if (PL_scopestack_ix != 0)
9b387841
NC
1092 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1093 "Unbalanced scopes: %ld more ENTERs than LEAVEs\n",
1094 (long)PL_scopestack_ix);
3280af22 1095 if (PL_savestack_ix != 0)
9b387841
NC
1096 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),
1097 "Unbalanced saves: %ld more saves than restores\n",
1098 (long)PL_savestack_ix);
3280af22 1099 if (PL_tmps_floor != -1)
9b387841
NC
1100 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced tmps: %ld more allocs than frees\n",
1101 (long)PL_tmps_floor + 1);
a0d0e21e 1102 if (cxstack_ix != -1)
9b387841
NC
1103 Perl_ck_warner_d(aTHX_ packWARN(WARN_INTERNAL),"Unbalanced context: %ld more PUSHes than POPs\n",
1104 (long)cxstack_ix + 1);
a0d0e21e 1105 }
8990e307 1106
0547a729
DM
1107#ifdef USE_ITHREADS
1108 SvREFCNT_dec(PL_regex_padav);
1109 PL_regex_padav = NULL;
1110 PL_regex_pad = NULL;
1111#endif
1112
776df701 1113#ifdef PERL_IMPLICIT_CONTEXT
57bb2458
JH
1114 /* the entries in this list are allocated via SV PVX's, so get freed
1115 * in sv_clean_all */
1116 Safefree(PL_my_cxt_list);
776df701 1117#endif
57bb2458 1118
8990e307 1119 /* Now absolutely destruct everything, somehow or other, loops or no. */
5226ed68
JH
1120
1121 /* the 2 is for PL_fdpid and PL_strtab */
d17ea597 1122 while (sv_clean_all() > 2)
5226ed68
JH
1123 ;
1124
23083432
FC
1125#ifdef USE_ITHREADS
1126 Safefree(PL_stashpad); /* must come after sv_clean_all */
1127#endif
1128
d4777f27
GS
1129 AvREAL_off(PL_fdpid); /* no surviving entries */
1130 SvREFCNT_dec(PL_fdpid); /* needed in io_close() */
7d49f689 1131 PL_fdpid = NULL;
d33b2eba 1132
6c644e78
GS
1133#ifdef HAVE_INTERP_INTERN
1134 sys_intern_clear();
1135#endif
1136
a38ab475
RZ
1137 /* constant strings */
1138 for (i = 0; i < SV_CONSTS_COUNT; i++) {
1139 SvREFCNT_dec(PL_sv_consts[i]);
1140 PL_sv_consts[i] = NULL;
1141 }
1142
6e72f9df
PP
1143 /* Destruct the global string table. */
1144 {
1145 /* Yell and reset the HeVAL() slots that are still holding refcounts,
1146 * so that sv_free() won't fail on them.
80459961
NC
1147 * Now that the global string table is using a single hunk of memory
1148 * for both HE and HEK, we either need to explicitly unshare it the
1149 * correct way, or actually free things here.
6e72f9df 1150 */
80459961
NC
1151 I32 riter = 0;
1152 const I32 max = HvMAX(PL_strtab);
c4420975 1153 HE * const * const array = HvARRAY(PL_strtab);
80459961
NC
1154 HE *hent = array[0];
1155
6e72f9df 1156 for (;;) {
0453d815 1157 if (hent && ckWARN_d(WARN_INTERNAL)) {
44f8325f 1158 HE * const next = HeNEXT(hent);
9014280d 1159 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),
44f8325f 1160 "Unbalanced string table refcount: (%ld) for \"%s\"",
de616631 1161 (long)hent->he_valu.hent_refcount, HeKEY(hent));
80459961
NC
1162 Safefree(hent);
1163 hent = next;
6e72f9df
PP
1164 }
1165 if (!hent) {
1166 if (++riter > max)
1167 break;
1168 hent = array[riter];
1169 }
1170 }
80459961
NC
1171
1172 Safefree(array);
1173 HvARRAY(PL_strtab) = 0;
1174 HvTOTALKEYS(PL_strtab) = 0;
6e72f9df 1175 }
3280af22 1176 SvREFCNT_dec(PL_strtab);
6e72f9df 1177
e652bb2f 1178#ifdef USE_ITHREADS
c21d1a0f 1179 /* free the pointer tables used for cloning */
a0739874 1180 ptr_table_free(PL_ptr_table);
bf9cdc68 1181 PL_ptr_table = (PTR_TBL_t*)NULL;
53186e96 1182#endif
a0739874 1183
d33b2eba
GS
1184 /* free special SVs */
1185
1186 SvREFCNT(&PL_sv_yes) = 0;
1187 sv_clear(&PL_sv_yes);
1188 SvANY(&PL_sv_yes) = NULL;
4c5e2b0d 1189 SvFLAGS(&PL_sv_yes) = 0;
d33b2eba
GS
1190
1191 SvREFCNT(&PL_sv_no) = 0;
1192 sv_clear(&PL_sv_no);
1193 SvANY(&PL_sv_no) = NULL;
4c5e2b0d 1194 SvFLAGS(&PL_sv_no) = 0;
01724ea0 1195
9f375a43
DM
1196 {
1197 int i;
1198 for (i=0; i<=2; i++) {
1199 SvREFCNT(PERL_DEBUG_PAD(i)) = 0;
1200 sv_clear(PERL_DEBUG_PAD(i));
1201 SvANY(PERL_DEBUG_PAD(i)) = NULL;
1202 SvFLAGS(PERL_DEBUG_PAD(i)) = 0;
1203 }
1204 }
1205
0453d815 1206 if (PL_sv_count != 0 && ckWARN_d(WARN_INTERNAL))
9014280d 1207 Perl_warner(aTHX_ packWARN(WARN_INTERNAL),"Scalars leaked: %ld\n", (long)PL_sv_count);
6e72f9df 1208
eba0f806
DM
1209#ifdef DEBUG_LEAKING_SCALARS
1210 if (PL_sv_count != 0) {
1211 SV* sva;
1212 SV* sv;
eb578fdb 1213 SV* svend;
eba0f806 1214
ad64d0ec 1215 for (sva = PL_sv_arenaroot; sva; sva = MUTABLE_SV(SvANY(sva))) {
eba0f806
DM
1216 svend = &sva[SvREFCNT(sva)];
1217 for (sv = sva + 1; sv < svend; ++sv) {
e4787c0c 1218 if (SvTYPE(sv) != (svtype)SVTYPEMASK) {
a548cda8 1219 PerlIO_printf(Perl_debug_log, "leaked: sv=0x%p"
61b61456 1220 " flags=0x%"UVxf
fd0854ff 1221 " refcnt=%"UVuf pTHX__FORMAT "\n"
cd676548
DM
1222 "\tallocated at %s:%d %s %s (parent 0x%"UVxf");"
1223 "serial %"UVuf"\n",
574b8821
NC
1224 (void*)sv, (UV)sv->sv_flags, (UV)sv->sv_refcnt
1225 pTHX__VALUE,
fd0854ff
DM
1226 sv->sv_debug_file ? sv->sv_debug_file : "(unknown)",
1227 sv->sv_debug_line,
1228 sv->sv_debug_inpad ? "for" : "by",
1229 sv->sv_debug_optype ?
1230 PL_op_name[sv->sv_debug_optype]: "(none)",
cd676548 1231 PTR2UV(sv->sv_debug_parent),
cbe56f1d 1232 sv->sv_debug_serial
fd0854ff 1233 );
2aa47728 1234#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
41e4abd8 1235 Perl_dump_sv_child(aTHX_ sv);
2aa47728 1236#endif
eba0f806
DM
1237 }
1238 }
1239 }
1240 }
2aa47728
NC
1241#ifdef DEBUG_LEAKING_SCALARS_FORK_DUMP
1242 {
1243 int status;
1244 fd_set rset;
1245 /* Wait for up to 4 seconds for child to terminate.
1246 This seems to be the least effort way of timing out on reaping
1247 its exit status. */
1248 struct timeval waitfor = {4, 0};
41e4abd8 1249 int sock = PL_dumper_fd;
2aa47728
NC
1250
1251 shutdown(sock, 1);
1252 FD_ZERO(&rset);
1253 FD_SET(sock, &rset);
1254 select(sock + 1, &rset, NULL, NULL, &waitfor);
1255 waitpid(child, &status, WNOHANG);
1256 close(sock);
1257 }
1258#endif
eba0f806 1259#endif
77abb4c6
NC
1260#ifdef DEBUG_LEAKING_SCALARS_ABORT
1261 if (PL_sv_count)
1262 abort();
1263#endif
bf9cdc68 1264 PL_sv_count = 0;
eba0f806 1265
56a2bab7 1266#if defined(PERLIO_LAYERS)
3a1ee7e8
NIS
1267 /* No more IO - including error messages ! */
1268 PerlIO_cleanup(aTHX);
1269#endif
1270
9f4bd222 1271 /* sv_undef needs to stay immortal until after PerlIO_cleanup
a0714e2c 1272 as currently layers use it rather than NULL as a marker
9f4bd222
NIS
1273 for no arg - and will try and SvREFCNT_dec it.
1274 */
1275 SvREFCNT(&PL_sv_undef) = 0;
1276 SvREADONLY_off(&PL_sv_undef);
1277
3280af22 1278 Safefree(PL_origfilename);
bd61b366 1279 PL_origfilename = NULL;
43c5f42d 1280 Safefree(PL_reg_curpm);
dd28f7bb 1281 free_tied_hv_pool();
3280af22 1282 Safefree(PL_op_mask);
cf36064f 1283 Safefree(PL_psig_name);
bf9cdc68 1284 PL_psig_name = (SV**)NULL;
d525a7b2 1285 PL_psig_ptr = (SV**)NULL;
31c91b43
LR
1286 {
1287 /* We need to NULL PL_psig_pend first, so that
1288 signal handlers know not to use it */
1289 int *psig_save = PL_psig_pend;
1290 PL_psig_pend = (int*)NULL;
1291 Safefree(psig_save);
1292 }
6e72f9df 1293 nuke_stacks();
284167a5
SM
1294 TAINTING_set(FALSE);
1295 TAINT_WARN_set(FALSE);
3280af22 1296 PL_hints = 0; /* Reset hints. Should hints be per-interpreter ? */
bf9cdc68 1297 PL_debug = 0;
ac27b0f5 1298
a0d0e21e 1299 DEBUG_P(debprofdump());
d33b2eba 1300
e5dd39fc 1301#ifdef USE_REENTRANT_API
10bc17b6 1302 Perl_reentrant_free(aTHX);
e5dd39fc
AB
1303#endif
1304
612f20c3
GS
1305 sv_free_arenas();
1306
5d9a96ca
DM
1307 while (PL_regmatch_slab) {
1308 regmatch_slab *s = PL_regmatch_slab;
1309 PL_regmatch_slab = PL_regmatch_slab->next;
1310 Safefree(s);
1311 }
1312
fc36a67e
PP
1313 /* As the absolutely last thing, free the non-arena SV for mess() */
1314
3280af22 1315 if (PL_mess_sv) {
f350b448
NC
1316 /* we know that type == SVt_PVMG */
1317
9c63abab 1318 /* it could have accumulated taint magic */
f350b448
NC
1319 MAGIC* mg;
1320 MAGIC* moremagic;
1321 for (mg = SvMAGIC(PL_mess_sv); mg; mg = moremagic) {
1322 moremagic = mg->mg_moremagic;
1323 if (mg->mg_ptr && mg->mg_type != PERL_MAGIC_regex_global
1324 && mg->mg_len >= 0)
1325 Safefree(mg->mg_ptr);
1326 Safefree(mg);
9c63abab 1327 }
f350b448 1328
fc36a67e 1329 /* we know that type >= SVt_PV */
8bd4d4c5 1330 SvPV_free(PL_mess_sv);
3280af22
NIS
1331 Safefree(SvANY(PL_mess_sv));
1332 Safefree(PL_mess_sv);
a0714e2c 1333 PL_mess_sv = NULL;
fc36a67e 1334 }
37038d91 1335 return STATUS_EXIT;
79072805
LW
1336}
1337
954c1994
GS
1338/*
1339=for apidoc perl_free
1340
1341Releases a Perl interpreter. See L<perlembed>.
1342
1343=cut
1344*/
1345
79072805 1346void
0cb96387 1347perl_free(pTHXx)
79072805 1348{
5174512c
NC
1349 dVAR;
1350
7918f24d
NC
1351 PERL_ARGS_ASSERT_PERL_FREE;
1352
c301d606
DM
1353 if (PL_veto_cleanup)
1354 return;
1355
7cb608b5 1356#ifdef PERL_TRACK_MEMPOOL
55ef9aae
MHM
1357 {
1358 /*
1359 * Don't free thread memory if PERL_DESTRUCT_LEVEL is set to a non-zero
1360 * value as we're probably hunting memory leaks then
1361 */
36e77d41 1362 if (PL_perl_destruct_level == 0) {
4fd0a9b8 1363 const U32 old_debug = PL_debug;
55ef9aae
MHM
1364 /* Emulate the PerlHost behaviour of free()ing all memory allocated in this
1365 thread at thread exit. */
4fd0a9b8
NC
1366 if (DEBUG_m_TEST) {
1367 PerlIO_puts(Perl_debug_log, "Disabling memory debugging as we "
1368 "free this thread's memory\n");
1369 PL_debug &= ~ DEBUG_m_FLAG;
1370 }
55ef9aae 1371 while(aTHXx->Imemory_debug_header.next != &(aTHXx->Imemory_debug_header))
a78adc84 1372 safesysfree(PERL_MEMORY_DEBUG_HEADER_SIZE + (char *)(aTHXx->Imemory_debug_header.next));
4fd0a9b8 1373 PL_debug = old_debug;
55ef9aae
MHM
1374 }
1375 }
7cb608b5
NC
1376#endif
1377
acfe0abc 1378#if defined(WIN32) || defined(NETWARE)
ce3e5b80 1379# if defined(PERL_IMPLICIT_SYS)
b36c9a52 1380 {
acfe0abc 1381# ifdef NETWARE
7af12a34 1382 void *host = nw_internal_host;
7af12a34 1383 PerlMem_free(aTHXx);
7af12a34 1384 nw_delete_internal_host(host);
acfe0abc 1385# else
bdb50480
NC
1386 void *host = w32_internal_host;
1387 PerlMem_free(aTHXx);
7af12a34 1388 win32_delete_internal_host(host);
acfe0abc 1389# endif
7af12a34 1390 }
1c0ca838
GS
1391# else
1392 PerlMem_free(aTHXx);
1393# endif
acfe0abc
GS
1394#else
1395 PerlMem_free(aTHXx);
76e3520e 1396#endif
79072805
LW
1397}
1398
b7f7fff6 1399#if defined(USE_ITHREADS)
aebd1ac7
GA
1400/* provide destructors to clean up the thread key when libperl is unloaded */
1401#ifndef WIN32 /* handled during DLL_PROCESS_DETACH in win32/perllib.c */
1402
826955bd 1403#if defined(__hpux) && !(defined(__ux_version) && __ux_version <= 1020) && !defined(__GNUC__)
aebd1ac7 1404#pragma fini "perl_fini"
666ad1ec
GA
1405#elif defined(__sun) && !defined(__GNUC__)
1406#pragma fini (perl_fini)
aebd1ac7
GA
1407#endif
1408
0dbb1585
AL
1409static void
1410#if defined(__GNUC__)
1411__attribute__((destructor))
aebd1ac7 1412#endif
de009b76 1413perl_fini(void)
aebd1ac7 1414{
27da23d5 1415 dVAR;
5c64bffd
NC
1416 if (
1417#ifdef PERL_GLOBAL_STRUCT_PRIVATE
1418 my_vars &&
1419#endif
1420 PL_curinterp && !PL_veto_cleanup)
aebd1ac7
GA
1421 FREE_THREAD_KEY;
1422}
1423
1424#endif /* WIN32 */
1425#endif /* THREADS */
1426
4b556e6c 1427void
864dbfa3 1428Perl_call_atexit(pTHX_ ATEXIT_t fn, void *ptr)
4b556e6c 1429{
97aff369 1430 dVAR;
3280af22
NIS
1431 Renew(PL_exitlist, PL_exitlistlen+1, PerlExitListEntry);
1432 PL_exitlist[PL_exitlistlen].fn = fn;
1433 PL_exitlist[PL_exitlistlen].ptr = ptr;
1434 ++PL_exitlistlen;
4b556e6c
JD
1435}
1436
954c1994
GS
1437/*
1438=for apidoc perl_parse
1439
1440Tells a Perl interpreter to parse a Perl script. See L<perlembed>.
1441
1442=cut
1443*/
1444
03d9f026
FC
1445#define SET_CURSTASH(newstash) \
1446 if (PL_curstash != newstash) { \
1447 SvREFCNT_dec(PL_curstash); \
1448 PL_curstash = (HV *)SvREFCNT_inc(newstash); \
1449 }
1450
79072805 1451int
0cb96387 1452perl_parse(pTHXx_ XSINIT_t xsinit, int argc, char **argv, char **env)
8d063cd8 1453{
27da23d5 1454 dVAR;
6224f72b 1455 I32 oldscope;
6224f72b 1456 int ret;
db36c5a1 1457 dJMPENV;
8d063cd8 1458
7918f24d
NC
1459 PERL_ARGS_ASSERT_PERL_PARSE;
1460#ifndef MULTIPLICITY
ed6c66dd 1461 PERL_UNUSED_ARG(my_perl);
7918f24d 1462#endif
7dc86639 1463#if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) || defined(USE_HASH_SEED_DEBUG)
b0891165 1464 {
7dc86639
YO
1465 const char * const s = PerlEnv_getenv("PERL_HASH_SEED_DEBUG");
1466
1467 if (s && (atoi(s) == 1)) {
1468 unsigned char *seed= PERL_HASH_SEED;
1469 unsigned char *seed_end= PERL_HASH_SEED + PERL_HASH_SEED_BYTES;
1470 PerlIO_printf(Perl_debug_log, "HASH_FUNCTION = %s HASH_SEED = 0x", PERL_HASH_FUNC);
1471 while (seed < seed_end) {
1472 PerlIO_printf(Perl_debug_log, "%02x", *seed++);
1473 }
6a5b4183
YO
1474#ifdef PERL_HASH_RANDOMIZE_KEYS
1475 PerlIO_printf(Perl_debug_log, " PERTURB_KEYS = %d (%s)",
1476 PL_HASH_RAND_BITS_ENABLED,
1477 PL_HASH_RAND_BITS_ENABLED == 0 ? "NO" : PL_HASH_RAND_BITS_ENABLED == 1 ? "RANDOM" : "DETERMINISTIC");
1478#endif
7dc86639
YO
1479 PerlIO_printf(Perl_debug_log, "\n");
1480 }
b0891165
JH
1481 }
1482#endif /* #if defined(USE_HASH_SEED) || defined(USE_HASH_SEED_EXPLICIT) */
3280af22 1483 PL_origargc = argc;
e2975953 1484 PL_origargv = argv;
a0d0e21e 1485
a2722ac9
GA
1486 if (PL_origalen != 0) {
1487 PL_origalen = 1; /* don't use old PL_origalen if perl_parse() is called again */
1488 }
1489 else {
3cb9023d
JH
1490 /* Set PL_origalen be the sum of the contiguous argv[]
1491 * elements plus the size of the env in case that it is
e9137a8e 1492 * contiguous with the argv[]. This is used in mg.c:Perl_magic_set()
3cb9023d
JH
1493 * as the maximum modifiable length of $0. In the worst case
1494 * the area we are able to modify is limited to the size of
43c32782 1495 * the original argv[0]. (See below for 'contiguous', though.)
3cb9023d 1496 * --jhi */
e1ec3a88 1497 const char *s = NULL;
54bfe034 1498 int i;
b7249aaf 1499 const UV mask = ~(UV)(PTRSIZE-1);
43c32782 1500 /* Do the mask check only if the args seem like aligned. */
1b6737cc 1501 const UV aligned =
43c32782
JH
1502 (mask < ~(UV)0) && ((PTR2UV(argv[0]) & mask) == PTR2UV(argv[0]));
1503
1504 /* See if all the arguments are contiguous in memory. Note
1505 * that 'contiguous' is a loose term because some platforms
1506 * align the argv[] and the envp[]. If the arguments look
1507 * like non-aligned, assume that they are 'strictly' or
1508 * 'traditionally' contiguous. If the arguments look like
1509 * aligned, we just check that they are within aligned
1510 * PTRSIZE bytes. As long as no system has something bizarre
1511 * like the argv[] interleaved with some other data, we are
1512 * fine. (Did I just evoke Murphy's Law?) --jhi */
c8941eeb
JH
1513 if (PL_origargv && PL_origargc >= 1 && (s = PL_origargv[0])) {
1514 while (*s) s++;
1515 for (i = 1; i < PL_origargc; i++) {
1516 if ((PL_origargv[i] == s + 1
43c32782 1517#ifdef OS2
c8941eeb 1518 || PL_origargv[i] == s + 2
43c32782 1519#endif
c8941eeb
JH
1520 )
1521 ||
1522 (aligned &&
1523 (PL_origargv[i] > s &&
1524 PL_origargv[i] <=
1525 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1526 )
1527 {
1528 s = PL_origargv[i];
1529 while (*s) s++;
1530 }
1531 else
1532 break;
54bfe034 1533 }
54bfe034 1534 }
a4a109c2
JD
1535
1536#ifndef PERL_USE_SAFE_PUTENV
3cb9023d 1537 /* Can we grab env area too to be used as the area for $0? */
a4a109c2 1538 if (s && PL_origenviron && !PL_use_safe_putenv) {
9d419b5f 1539 if ((PL_origenviron[0] == s + 1)
43c32782
JH
1540 ||
1541 (aligned &&
1542 (PL_origenviron[0] > s &&
1543 PL_origenviron[0] <=
1544 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1545 )
1546 {
9d419b5f 1547#ifndef OS2 /* ENVIRON is read by the kernel too. */
43c32782
JH
1548 s = PL_origenviron[0];
1549 while (*s) s++;
1550#endif
bd61b366 1551 my_setenv("NoNe SuCh", NULL);
43c32782
JH
1552 /* Force copy of environment. */
1553 for (i = 1; PL_origenviron[i]; i++) {
1554 if (PL_origenviron[i] == s + 1
1555 ||
1556 (aligned &&
1557 (PL_origenviron[i] > s &&
1558 PL_origenviron[i] <=
1559 INT2PTR(char *, PTR2UV(s + PTRSIZE) & mask)))
1560 )
1561 {
1562 s = PL_origenviron[i];
1563 while (*s) s++;
1564 }
1565 else
1566 break;
54bfe034 1567 }
43c32782 1568 }
54bfe034 1569 }
a4a109c2
JD
1570#endif /* !defined(PERL_USE_SAFE_PUTENV) */
1571
2d2af554 1572 PL_origalen = s ? s - PL_origargv[0] + 1 : 0;
54bfe034
JH
1573 }
1574
3280af22 1575 if (PL_do_undump) {
a0d0e21e
LW
1576
1577 /* Come here if running an undumped a.out. */
1578
3280af22
NIS
1579 PL_origfilename = savepv(argv[0]);
1580 PL_do_undump = FALSE;
a0d0e21e 1581 cxstack_ix = -1; /* start label stack again */
748a9306 1582 init_ids();
284167a5 1583 assert (!TAINT_get);
b7975bdd 1584 TAINT;
e2051532 1585 set_caret_X();
b7975bdd 1586 TAINT_NOT;
a0d0e21e
LW
1587 init_postdump_symbols(argc,argv,env);
1588 return 0;
1589 }
1590
3280af22 1591 if (PL_main_root) {
3280af22 1592 op_free(PL_main_root);
5f66b61c 1593 PL_main_root = NULL;
ff0cee69 1594 }
5f66b61c 1595 PL_main_start = NULL;
3280af22 1596 SvREFCNT_dec(PL_main_cv);
601f1833 1597 PL_main_cv = NULL;
79072805 1598
3280af22
NIS
1599 time(&PL_basetime);
1600 oldscope = PL_scopestack_ix;
599cee73 1601 PL_dowarn = G_WARN_OFF;
f86702cc 1602
14dd3ad8 1603 JMPENV_PUSH(ret);
6224f72b 1604 switch (ret) {
312caa8e 1605 case 0:
14dd3ad8 1606 parse_body(env,xsinit);
9ebf26ad 1607 if (PL_unitcheckav) {
3c10abe3 1608 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1609 }
1610 if (PL_checkav) {
ca7b837b 1611 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1612 call_list(oldscope, PL_checkav);
9ebf26ad 1613 }
14dd3ad8
GS
1614 ret = 0;
1615 break;
6224f72b
GS
1616 case 1:
1617 STATUS_ALL_FAILURE;
1618 /* FALL THROUGH */
1619 case 2:
1620 /* my_exit() was called */
3280af22 1621 while (PL_scopestack_ix > oldscope)
6224f72b
GS
1622 LEAVE;
1623 FREETMPS;
03d9f026 1624 SET_CURSTASH(PL_defstash);
9ebf26ad 1625 if (PL_unitcheckav) {
3c10abe3 1626 call_list(oldscope, PL_unitcheckav);
9ebf26ad
FR
1627 }
1628 if (PL_checkav) {
ca7b837b 1629 PERL_SET_PHASE(PERL_PHASE_CHECK);
7d30b5c4 1630 call_list(oldscope, PL_checkav);
9ebf26ad 1631 }
37038d91 1632 ret = STATUS_EXIT;
14dd3ad8 1633 break;
6224f72b 1634 case 3:
bf49b057 1635 PerlIO_printf(Perl_error_log, "panic: top_env\n");
14dd3ad8
GS
1636 ret = 1;
1637 break;
6224f72b 1638 }
14dd3ad8
GS
1639 JMPENV_POP;
1640 return ret;
1641}
1642
4a5df386
NC
1643/* This needs to stay in perl.c, as perl.c is compiled with different flags for
1644 miniperl, and we need to see those flags reflected in the values here. */
1645
1646/* What this returns is subject to change. Use the public interface in Config.
1647 */
1648static void
1649S_Internals_V(pTHX_ CV *cv)
1650{
1651 dXSARGS;
1652#ifdef LOCAL_PATCH_COUNT
1653 const int local_patch_count = LOCAL_PATCH_COUNT;
1654#else
1655 const int local_patch_count = 0;
1656#endif
2dc296d2 1657 const int entries = 3 + local_patch_count;
4a5df386 1658 int i;
fe1c5936 1659 static const char non_bincompat_options[] =
4a5df386
NC
1660# ifdef DEBUGGING
1661 " DEBUGGING"
1662# endif
1663# ifdef NO_MATHOMS
0d311fbe 1664 " NO_MATHOMS"
4a5df386 1665# endif
59b86f4b
DM
1666# ifdef NO_HASH_SEED
1667 " NO_HASH_SEED"
1668# endif
3b0e4ee2
MB
1669# ifdef NO_TAINT_SUPPORT
1670 " NO_TAINT_SUPPORT"
1671# endif
cb26ef7a
MB
1672# ifdef PERL_BOOL_AS_CHAR
1673 " PERL_BOOL_AS_CHAR"
1674# endif
4a5df386
NC
1675# ifdef PERL_DISABLE_PMC
1676 " PERL_DISABLE_PMC"
1677# endif
1678# ifdef PERL_DONT_CREATE_GVSV
1679 " PERL_DONT_CREATE_GVSV"
1680# endif
9a044a43
NC
1681# ifdef PERL_EXTERNAL_GLOB
1682 " PERL_EXTERNAL_GLOB"
1683# endif
59b86f4b
DM
1684# ifdef PERL_HASH_FUNC_SIPHASH
1685 " PERL_HASH_FUNC_SIPHASH"
1686# endif
1687# ifdef PERL_HASH_FUNC_SDBM
1688 " PERL_HASH_FUNC_SDBM"
1689# endif
1690# ifdef PERL_HASH_FUNC_DJB2
1691 " PERL_HASH_FUNC_DJB2"
1692# endif
1693# ifdef PERL_HASH_FUNC_SUPERFAST
1694 " PERL_HASH_FUNC_SUPERFAST"
1695# endif
1696# ifdef PERL_HASH_FUNC_MURMUR3
1697 " PERL_HASH_FUNC_MURMUR3"
1698# endif
1699# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME
1700 " PERL_HASH_FUNC_ONE_AT_A_TIME"
1701# endif
1702# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_HARD
1703 " PERL_HASH_FUNC_ONE_AT_A_TIME_HARD"
1704# endif
1705# ifdef PERL_HASH_FUNC_ONE_AT_A_TIME_OLD
1706 " PERL_HASH_FUNC_ONE_AT_A_TIME_OLD"
1707# endif
4a5df386
NC
1708# ifdef PERL_IS_MINIPERL
1709 " PERL_IS_MINIPERL"
1710# endif
1711# ifdef PERL_MALLOC_WRAP
1712 " PERL_MALLOC_WRAP"
1713# endif
1714# ifdef PERL_MEM_LOG
1715 " PERL_MEM_LOG"
1716# endif
1717# ifdef PERL_MEM_LOG_NOIMPL
1718 " PERL_MEM_LOG_NOIMPL"
1719# endif
2542212d
DM
1720# ifdef PERL_NEW_COPY_ON_WRITE
1721 " PERL_NEW_COPY_ON_WRITE"
1722# endif
59b86f4b
DM
1723# ifdef PERL_PERTURB_KEYS_DETERMINISTIC
1724 " PERL_PERTURB_KEYS_DETERMINISTIC"
1725# endif
1726# ifdef PERL_PERTURB_KEYS_DISABLED
1727 " PERL_PERTURB_KEYS_DISABLED"
1728# endif
1729# ifdef PERL_PERTURB_KEYS_RANDOM
1730 " PERL_PERTURB_KEYS_RANDOM"
1731# endif
c3cf41ec
NC
1732# ifdef PERL_PRESERVE_IVUV
1733 " PERL_PRESERVE_IVUV"
1734# endif
c051e30b
NC
1735# ifdef PERL_RELOCATABLE_INCPUSH
1736 " PERL_RELOCATABLE_INCPUSH"
1737# endif
4a5df386
NC
1738# ifdef PERL_USE_DEVEL
1739 " PERL_USE_DEVEL"
1740# endif
1741# ifdef PERL_USE_SAFE_PUTENV
1742 " PERL_USE_SAFE_PUTENV"
1743# endif
a3749cf3
NC
1744# ifdef UNLINK_ALL_VERSIONS
1745 " UNLINK_ALL_VERSIONS"
1746# endif
de618ee4
NC
1747# ifdef USE_ATTRIBUTES_FOR_PERLIO
1748 " USE_ATTRIBUTES_FOR_PERLIO"
1749# endif
4a5df386
NC
1750# ifdef USE_FAST_STDIO
1751 " USE_FAST_STDIO"
1752# endif
59b86f4b
DM
1753# ifdef USE_HASH_SEED_EXPLICIT
1754 " USE_HASH_SEED_EXPLICIT"
1755# endif
98548bdf
NC
1756# ifdef USE_LOCALE
1757 " USE_LOCALE"
1758# endif
98548bdf
NC
1759# ifdef USE_LOCALE_CTYPE
1760 " USE_LOCALE_CTYPE"
1761# endif
5a8d8935
NC
1762# ifdef USE_PERL_ATOF
1763 " USE_PERL_ATOF"
1764# endif
0d311fbe
NC
1765# ifdef USE_SITECUSTOMIZE
1766 " USE_SITECUSTOMIZE"
1767# endif
4a5df386
NC
1768 ;
1769 PERL_UNUSED_ARG(cv);
1770 PERL_UNUSED_ARG(items);
1771
1772 EXTEND(SP, entries);
1773
1774 PUSHs(sv_2mortal(newSVpv(PL_bincompat_options, 0)));
1775 PUSHs(Perl_newSVpvn_flags(aTHX_ non_bincompat_options,
1776 sizeof(non_bincompat_options) - 1, SVs_TEMP));
1777
1778#ifdef __DATE__
1779# ifdef __TIME__
1780 PUSHs(Perl_newSVpvn_flags(aTHX_
1781 STR_WITH_LEN("Compiled at " __DATE__ " " __TIME__),
1782 SVs_TEMP));
1783# else
1784 PUSHs(Perl_newSVpvn_flags(aTHX_ STR_WITH_LEN("Compiled on " __DATE__),
1785 SVs_TEMP));
1786# endif
1787#else
1788 PUSHs(&PL_sv_undef);
1789#endif
1790
4a5df386
NC
1791 for (i = 1; i <= local_patch_count; i++) {
1792 /* This will be an undef, if PL_localpatches[i] is NULL. */
1793 PUSHs(sv_2mortal(newSVpv(PL_localpatches[i], 0)));
1794 }
1795
1796 XSRETURN(entries);
1797}
1798
be71fc8f
NC
1799#define INCPUSH_UNSHIFT 0x01
1800#define INCPUSH_ADD_OLD_VERS 0x02
1801#define INCPUSH_ADD_VERSIONED_SUB_DIRS 0x04
1802#define INCPUSH_ADD_ARCHONLY_SUB_DIRS 0x08
1803#define INCPUSH_NOT_BASEDIR 0x10
1804#define INCPUSH_CAN_RELOCATE 0x20
1e3208d8
NC
1805#define INCPUSH_ADD_SUB_DIRS \
1806 (INCPUSH_ADD_VERSIONED_SUB_DIRS|INCPUSH_ADD_ARCHONLY_SUB_DIRS)
e28f3139 1807
312caa8e 1808STATIC void *
14dd3ad8 1809S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
312caa8e 1810{
27da23d5 1811 dVAR;
2f9285f8 1812 PerlIO *rsfp;
312caa8e 1813 int argc = PL_origargc;
8f42b153 1814 char **argv = PL_origargv;
e1ec3a88 1815 const char *scriptname = NULL;
312caa8e 1816 VOL bool dosearch = FALSE;
eb578fdb 1817 char c;
737c24fc 1818 bool doextract = FALSE;
bd61b366 1819 const char *cddir = NULL;
ab019eaa 1820#ifdef USE_SITECUSTOMIZE
20ef40cf 1821 bool minus_f = FALSE;
ab019eaa 1822#endif
95670bde 1823 SV *linestr_sv = NULL;
5486870f 1824 bool add_read_e_script = FALSE;
87606032 1825 U32 lex_start_flags = 0;
009d90df 1826
ca7b837b 1827 PERL_SET_PHASE(PERL_PHASE_START);
9ebf26ad 1828
6224f72b 1829 init_main_stash();
54310121 1830
c7030b81
NC
1831 {
1832 const char *s;
6224f72b
GS
1833 for (argc--,argv++; argc > 0; argc--,argv++) {
1834 if (argv[0][0] != '-' || !argv[0][1])
1835 break;
6224f72b
GS
1836 s = argv[0]+1;
1837 reswitch:
47f56822 1838 switch ((c = *s)) {
729a02f2 1839 case 'C':
1d5472a9
GS
1840#ifndef PERL_STRICT_CR
1841 case '\r':
1842#endif
6224f72b
GS
1843 case ' ':
1844 case '0':
1845 case 'F':
1846 case 'a':
1847 case 'c':
1848 case 'd':
1849 case 'D':
1850 case 'h':
1851 case 'i':
1852 case 'l':
1853 case 'M':
1854 case 'm':
1855 case 'n':
1856 case 'p':
1857 case 's':
1858 case 'u':
1859 case 'U':
1860 case 'v':
599cee73
PM
1861 case 'W':
1862 case 'X':
6224f72b 1863 case 'w':
97bd5664 1864 if ((s = moreswitches(s)))
6224f72b
GS
1865 goto reswitch;
1866 break;
33b78306 1867
1dbad523 1868 case 't':
dc6d7f5c 1869#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1870 /* silently ignore */
dc6d7f5c 1871#elif defined(NO_TAINT_SUPPORT)
3231f579 1872 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1873 "Cowardly refusing to run with -t or -T flags");
1874#else
22f7c9c9 1875 CHECK_MALLOC_TOO_LATE_FOR('t');
284167a5
SM
1876 if( !TAINTING_get ) {
1877 TAINT_WARN_set(TRUE);
1878 TAINTING_set(TRUE);
317ea90d 1879 }
284167a5 1880#endif
317ea90d
MS
1881 s++;
1882 goto reswitch;
6224f72b 1883 case 'T':
dc6d7f5c 1884#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 1885 /* silently ignore */
dc6d7f5c 1886#elif defined(NO_TAINT_SUPPORT)
3231f579 1887 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
1888 "Cowardly refusing to run with -t or -T flags");
1889#else
22f7c9c9 1890 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
1891 TAINTING_set(TRUE);
1892 TAINT_WARN_set(FALSE);
1893#endif
6224f72b
GS
1894 s++;
1895 goto reswitch;
f86702cc 1896
bc9b29db
RH
1897 case 'E':
1898 PL_minus_E = TRUE;
1899 /* FALL THROUGH */
6224f72b 1900 case 'e':
f20b2998 1901 forbid_setid('e', FALSE);
3280af22 1902 if (!PL_e_script) {
396482e1 1903 PL_e_script = newSVpvs("");
5486870f 1904 add_read_e_script = TRUE;
6224f72b
GS
1905 }
1906 if (*++s)
3280af22 1907 sv_catpv(PL_e_script, s);
6224f72b 1908 else if (argv[1]) {
3280af22 1909 sv_catpv(PL_e_script, argv[1]);
6224f72b
GS
1910 argc--,argv++;
1911 }
1912 else
47f56822 1913 Perl_croak(aTHX_ "No code specified for -%c", c);
396482e1 1914 sv_catpvs(PL_e_script, "\n");
6224f72b 1915 break;
afe37c7d 1916
20ef40cf 1917 case 'f':
f5542d3a 1918#ifdef USE_SITECUSTOMIZE
20ef40cf 1919 minus_f = TRUE;
f5542d3a 1920#endif
20ef40cf
GA
1921 s++;
1922 goto reswitch;
1923
6224f72b 1924 case 'I': /* -I handled both here and in moreswitches() */
f20b2998 1925 forbid_setid('I', FALSE);
bd61b366 1926 if (!*++s && (s=argv[1]) != NULL) {
6224f72b
GS
1927 argc--,argv++;
1928 }
6224f72b 1929 if (s && *s) {
0df16ed7 1930 STRLEN len = strlen(s);
55b4bc1c 1931 incpush(s, len, INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS);
0df16ed7
GS
1932 }
1933 else
a67e862a 1934 Perl_croak(aTHX_ "No directory specified for -I");
6224f72b 1935 break;
6224f72b 1936 case 'S':
f20b2998 1937 forbid_setid('S', FALSE);
6224f72b
GS
1938 dosearch = TRUE;
1939 s++;
1940 goto reswitch;
1941 case 'V':
7edfd0ef
NC
1942 {
1943 SV *opts_prog;
1944
7edfd0ef 1945 if (*++s != ':') {
37ca4a5b 1946 opts_prog = newSVpvs("use Config; Config::_V()");
7edfd0ef
NC
1947 }
1948 else {
1949 ++s;
1950 opts_prog = Perl_newSVpvf(aTHX_
37ca4a5b 1951 "use Config; Config::config_vars(qw%c%s%c)",
7edfd0ef
NC
1952 0, s, 0);
1953 s += strlen(s);
1954 }
37ca4a5b 1955 Perl_av_create_and_push(aTHX_ &PL_preambleav, opts_prog);
7edfd0ef
NC
1956 /* don't look for script or read stdin */
1957 scriptname = BIT_BUCKET;
1958 goto reswitch;
6224f72b 1959 }
6224f72b 1960 case 'x':
737c24fc 1961 doextract = TRUE;
6224f72b 1962 s++;
304334da 1963 if (*s)
f4c556ac 1964 cddir = s;
6224f72b
GS
1965 break;
1966 case 0:
1967 break;
1968 case '-':
1969 if (!*++s || isSPACE(*s)) {
1970 argc--,argv++;
1971 goto switch_end;
1972 }
ee8bc8b7
NC
1973 /* catch use of gnu style long options.
1974 Both of these exit immediately. */
1975 if (strEQ(s, "version"))
1976 minus_v();
1977 if (strEQ(s, "help"))
1978 usage();
6224f72b
GS
1979 s--;
1980 /* FALL THROUGH */
1981 default:
cea2e8a9 1982 Perl_croak(aTHX_ "Unrecognized switch: -%s (-h will show valid options)",s);
8d063cd8
LW
1983 }
1984 }
c7030b81
NC
1985 }
1986
6224f72b 1987 switch_end:
54310121 1988
c7030b81
NC
1989 {
1990 char *s;
1991
f675dbe5
CB
1992 if (
1993#ifndef SECURE_INTERNAL_GETENV
284167a5 1994 !TAINTING_get &&
f675dbe5 1995#endif
cf756827 1996 (s = PerlEnv_getenv("PERL5OPT")))
0df16ed7 1997 {
74288ac8
GS
1998 while (isSPACE(*s))
1999 s++;
317ea90d 2000 if (*s == '-' && *(s+1) == 'T') {
dc6d7f5c 2001#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2002 /* silently ignore */
dc6d7f5c 2003#elif defined(NO_TAINT_SUPPORT)
3231f579 2004 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2005 "Cowardly refusing to run with -t or -T flags");
2006#else
22f7c9c9 2007 CHECK_MALLOC_TOO_LATE_FOR('T');
284167a5
SM
2008 TAINTING_set(TRUE);
2009 TAINT_WARN_set(FALSE);
2010#endif
317ea90d 2011 }
74288ac8 2012 else {
bd61b366 2013 char *popt_copy = NULL;
74288ac8 2014 while (s && *s) {
54913509 2015 const char *d;
74288ac8
GS
2016 while (isSPACE(*s))
2017 s++;
2018 if (*s == '-') {
2019 s++;
2020 if (isSPACE(*s))
2021 continue;
2022 }
4ea8f8fb 2023 d = s;
74288ac8
GS
2024 if (!*s)
2025 break;
2b622f1a 2026 if (!strchr("CDIMUdmtwW", *s))
cea2e8a9 2027 Perl_croak(aTHX_ "Illegal switch in PERL5OPT: -%c", *s);
4ea8f8fb
MS
2028 while (++s && *s) {
2029 if (isSPACE(*s)) {
cf756827 2030 if (!popt_copy) {
bfa6c418
NC
2031 popt_copy = SvPVX(sv_2mortal(newSVpv(d,0)));
2032 s = popt_copy + (s - d);
2033 d = popt_copy;
cf756827 2034 }
4ea8f8fb
MS
2035 *s++ = '\0';
2036 break;
2037 }
2038 }
1c4db469 2039 if (*d == 't') {
dc6d7f5c 2040#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 2041 /* silently ignore */
dc6d7f5c 2042#elif defined(NO_TAINT_SUPPORT)
3231f579 2043 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
2044 "Cowardly refusing to run with -t or -T flags");
2045#else
2046 if( !TAINTING_get) {
2047 TAINT_WARN_set(TRUE);
2048 TAINTING_set(TRUE);
317ea90d 2049 }
284167a5 2050#endif
1c4db469 2051 } else {
97bd5664 2052 moreswitches(d);
1c4db469 2053 }
6224f72b 2054 }
6224f72b
GS
2055 }
2056 }
c7030b81 2057 }
a0d0e21e 2058
c29067d7
CH
2059 /* Set $^X early so that it can be used for relocatable paths in @INC */
2060 /* and for SITELIB_EXP in USE_SITECUSTOMIZE */
284167a5 2061 assert (!TAINT_get);
c29067d7 2062 TAINT;
e2051532 2063 set_caret_X();
c29067d7
CH
2064 TAINT_NOT;
2065
43c0c913 2066#if defined(USE_SITECUSTOMIZE)
20ef40cf 2067 if (!minus_f) {
43c0c913 2068 /* The games with local $! are to avoid setting errno if there is no
fc81b718
NC
2069 sitecustomize script. "q%c...%c", 0, ..., 0 becomes "q\0...\0",
2070 ie a q() operator with a NUL byte as a the delimiter. This avoids
2071 problems with pathnames containing (say) ' */
43c0c913
NC
2072# ifdef PERL_IS_MINIPERL
2073 AV *const inc = GvAV(PL_incgv);
2074 SV **const inc0 = inc ? av_fetch(inc, 0, FALSE) : NULL;
2075
2076 if (inc0) {
15870c5c
NC
2077 /* if lib/buildcustomize.pl exists, it should not fail. If it does,
2078 it should be reported immediately as a build failure. */
43c0c913
NC
2079 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2080 Perl_newSVpvf(aTHX_
15870c5c 2081 "BEGIN { do {local $!; -f q%c%"SVf"/buildcustomize.pl%c} and do q%c%"SVf"/buildcustomize.pl%c || die $@ }",
fc81b718
NC
2082 0, *inc0, 0,
2083 0, *inc0, 0));
43c0c913
NC
2084 }
2085# else
2086 /* SITELIB_EXP is a function call on Win32. */
c29067d7 2087 const char *const raw_sitelib = SITELIB_EXP;
bac5c4fc
JD
2088 if (raw_sitelib) {
2089 /* process .../.. if PERL_RELOCATABLE_INC is defined */
2090 SV *sitelib_sv = mayberelocate(raw_sitelib, strlen(raw_sitelib),
2091 INCPUSH_CAN_RELOCATE);
2092 const char *const sitelib = SvPVX(sitelib_sv);
2093 (void)Perl_av_create_and_unshift_one(aTHX_ &PL_preambleav,
2094 Perl_newSVpvf(aTHX_
2095 "BEGIN { do {local $!; -f q%c%s/sitecustomize.pl%c} && do q%c%s/sitecustomize.pl%c }",
2096 0, sitelib, 0,
2097 0, sitelib, 0));
2098 assert (SvREFCNT(sitelib_sv) == 1);
2099 SvREFCNT_dec(sitelib_sv);
2100 }
43c0c913 2101# endif
20ef40cf
GA
2102 }
2103#endif
2104
6224f72b
GS
2105 if (!scriptname)
2106 scriptname = argv[0];
3280af22 2107 if (PL_e_script) {
6224f72b
GS
2108 argc++,argv--;
2109 scriptname = BIT_BUCKET; /* don't look for script or read stdin */
2110 }
bd61b366 2111 else if (scriptname == NULL) {
6224f72b
GS
2112#ifdef MSDOS
2113 if ( PerlLIO_isatty(PerlIO_fileno(PerlIO_stdin())) )
97bd5664 2114 moreswitches("h");
6224f72b
GS
2115#endif
2116 scriptname = "-";
2117 }
2118
284167a5 2119 assert (!TAINT_get);
2cace6ac 2120 init_perllib();
6224f72b 2121
a52eba0e 2122 {
f20b2998 2123 bool suidscript = FALSE;
829372d3 2124
8d113837 2125 rsfp = open_script(scriptname, dosearch, &suidscript);
c0b3891a
NC
2126 if (!rsfp) {
2127 rsfp = PerlIO_stdin();
87606032 2128 lex_start_flags = LEX_DONT_CLOSE_RSFP;
c0b3891a 2129 }
6224f72b 2130
b24bc095 2131 validate_suid(rsfp);
6224f72b 2132
64ca3a65 2133#ifndef PERL_MICRO
a52eba0e
NC
2134# if defined(SIGCHLD) || defined(SIGCLD)
2135 {
2136# ifndef SIGCHLD
2137# define SIGCHLD SIGCLD
2138# endif
2139 Sighandler_t sigstate = rsignal_state(SIGCHLD);
2140 if (sigstate == (Sighandler_t) SIG_IGN) {
a2a5de95
NC
2141 Perl_ck_warner(aTHX_ packWARN(WARN_SIGNAL),
2142 "Can't ignore signal CHLD, forcing to default");
a52eba0e
NC
2143 (void)rsignal(SIGCHLD, (Sighandler_t)SIG_DFL);
2144 }
0b5b802d 2145 }
a52eba0e 2146# endif
64ca3a65 2147#endif
0b5b802d 2148
737c24fc 2149 if (doextract) {
faef540c 2150
f20b2998 2151 /* This will croak if suidscript is true, as -x cannot be used with
faef540c
NC
2152 setuid scripts. */
2153 forbid_setid('x', suidscript);
f20b2998 2154 /* Hence you can't get here if suidscript is true */
faef540c 2155
95670bde
NC
2156 linestr_sv = newSV_type(SVt_PV);
2157 lex_start_flags |= LEX_START_COPIED;
2f9285f8 2158 find_beginning(linestr_sv, rsfp);
a52eba0e
NC
2159 if (cddir && PerlDir_chdir( (char *)cddir ) < 0)
2160 Perl_croak(aTHX_ "Can't chdir to %s",cddir);
2161 }
f4c556ac 2162 }
6224f72b 2163
ea726b52 2164 PL_main_cv = PL_compcv = MUTABLE_CV(newSV_type(SVt_PVCV));
3280af22
NIS
2165 CvUNIQUE_on(PL_compcv);
2166
dd2155a4 2167 CvPADLIST(PL_compcv) = pad_new(0);
6224f72b 2168
dd69841b
BB
2169 PL_isarev = newHV();
2170
0c4f7ff0 2171 boot_core_PerlIO();
6224f72b 2172 boot_core_UNIVERSAL();
e1a479c5 2173 boot_core_mro();
4a5df386 2174 newXS("Internals::V", S_Internals_V, __FILE__);
6224f72b
GS
2175
2176 if (xsinit)
acfe0abc 2177 (*xsinit)(aTHX); /* in case linked C routines want magical variables */
64ca3a65 2178#ifndef PERL_MICRO
739a0b84 2179#if defined(VMS) || defined(WIN32) || defined(DJGPP) || defined(__CYGWIN__) || defined(SYMBIAN)
c5be433b 2180 init_os_extras();
6224f72b 2181#endif
64ca3a65 2182#endif
6224f72b 2183
29209bc5 2184#ifdef USE_SOCKS
1b9c9cf5
DH
2185# ifdef HAS_SOCKS5_INIT
2186 socks5_init(argv[0]);
2187# else
29209bc5 2188 SOCKSinit(argv[0]);
1b9c9cf5 2189# endif
ac27b0f5 2190#endif
29209bc5 2191
6224f72b
GS
2192 init_predump_symbols();
2193 /* init_postdump_symbols not currently designed to be called */
2194 /* more than once (ENV isn't cleared first, for example) */
2195 /* But running with -u leaves %ENV & @ARGV undefined! XXX */
3280af22 2196 if (!PL_do_undump)
6224f72b
GS
2197 init_postdump_symbols(argc,argv,env);
2198
27da23d5
JH
2199 /* PL_unicode is turned on by -C, or by $ENV{PERL_UNICODE},
2200 * or explicitly in some platforms.
085a54d9 2201 * locale.c:Perl_init_i18nl10n() if the environment
a05d7ebb 2202 * look like the user wants to use UTF-8. */
a0fd4948 2203#if defined(__SYMBIAN32__)
27da23d5
JH
2204 PL_unicode = PERL_UNICODE_STD_FLAG; /* See PERL_SYMBIAN_CONSOLE_UTF8. */
2205#endif
e27b5b51 2206# ifndef PERL_IS_MINIPERL
06e66572
JH
2207 if (PL_unicode) {
2208 /* Requires init_predump_symbols(). */
a05d7ebb 2209 if (!(PL_unicode & PERL_UNICODE_LOCALE_FLAG) || PL_utf8locale) {
06e66572
JH
2210 IO* io;
2211 PerlIO* fp;
2212 SV* sv;
2213
a05d7ebb 2214 /* Turn on UTF-8-ness on STDIN, STDOUT, STDERR
06e66572 2215 * and the default open disciplines. */
a05d7ebb
JH
2216 if ((PL_unicode & PERL_UNICODE_STDIN_FLAG) &&
2217 PL_stdingv && (io = GvIO(PL_stdingv)) &&
2218 (fp = IoIFP(io)))
2219 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2220 if ((PL_unicode & PERL_UNICODE_STDOUT_FLAG) &&
2221 PL_defoutgv && (io = GvIO(PL_defoutgv)) &&
2222 (fp = IoOFP(io)))
2223 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2224 if ((PL_unicode & PERL_UNICODE_STDERR_FLAG) &&
2225 PL_stderrgv && (io = GvIO(PL_stderrgv)) &&
2226 (fp = IoOFP(io)))
2227 PerlIO_binmode(aTHX_ fp, IoTYPE(io), 0, ":utf8");
2228 if ((PL_unicode & PERL_UNICODE_INOUT_FLAG) &&
fafc274c
NC
2229 (sv = GvSV(gv_fetchpvs("\017PEN", GV_ADD|GV_NOTQUAL,
2230 SVt_PV)))) {
a05d7ebb
JH
2231 U32 in = PL_unicode & PERL_UNICODE_IN_FLAG;
2232 U32 out = PL_unicode & PERL_UNICODE_OUT_FLAG;
2233 if (in) {
2234 if (out)
76f68e9b 2235 sv_setpvs(sv, ":utf8\0:utf8");
a05d7ebb 2236 else
76f68e9b 2237 sv_setpvs(sv, ":utf8\0");
a05d7ebb
JH
2238 }
2239 else if (out)
76f68e9b 2240 sv_setpvs(sv, "\0:utf8");
a05d7ebb
JH
2241 SvSETMAGIC(sv);
2242 }
b310b053
JH
2243 }
2244 }
e27b5b51 2245#endif
b310b053 2246
c7030b81
NC
2247 {
2248 const char *s;
4ffa73a3
JH
2249 if ((s = PerlEnv_getenv("PERL_SIGNALS"))) {
2250 if (strEQ(s, "unsafe"))
2251 PL_signals |= PERL_SIGNALS_UNSAFE_FLAG;
2252 else if (strEQ(s, "safe"))
2253 PL_signals &= ~PERL_SIGNALS_UNSAFE_FLAG;
2254 else
2255 Perl_croak(aTHX_ "PERL_SIGNALS illegal: \"%s\"", s);
2256 }
c7030b81 2257 }
4ffa73a3 2258
81d86705 2259#ifdef PERL_MAD
c7030b81
NC
2260 {
2261 const char *s;
284167a5 2262 if (!TAINTING_get &&
2cc12391 2263 (s = PerlEnv_getenv("PERL_XMLDUMP"))) {
81d86705
NC
2264 PL_madskills = 1;
2265 PL_minus_c = 1;
2266 if (!s || !s[0])
2267 PL_xmlfp = PerlIO_stdout();
2268 else {
2269 PL_xmlfp = PerlIO_open(s, "w");
2270 if (!PL_xmlfp)
2271 Perl_croak(aTHX_ "Can't open %s", s);
2272 }
1a9a51d4 2273 my_setenv("PERL_XMLDUMP", NULL); /* hide from subprocs */
81d86705 2274 }
c7030b81
NC
2275 }
2276
2277 {
2278 const char *s;
81d86705
NC
2279 if ((s = PerlEnv_getenv("PERL_MADSKILLS"))) {
2280 PL_madskills = atoi(s);
1a9a51d4 2281 my_setenv("PERL_MADSKILLS", NULL); /* hide from subprocs */
81d86705 2282 }
c7030b81 2283 }
81d86705
NC
2284#endif
2285
87606032 2286 lex_start(linestr_sv, rsfp, lex_start_flags);
d2687c98 2287 SvREFCNT_dec(linestr_sv);
95670bde 2288
219f7226 2289 PL_subname = newSVpvs("main");
6224f72b 2290
5486870f
DM
2291 if (add_read_e_script)
2292 filter_add(read_e_script, NULL);
2293
6224f72b
GS
2294 /* now parse the script */
2295
93189314 2296 SETERRNO(0,SS_NORMAL);
28ac2b49 2297 if (yyparse(GRAMPROG) || PL_parser->error_count) {
3280af22 2298 if (PL_minus_c)
cea2e8a9 2299 Perl_croak(aTHX_ "%s had compilation errors.\n", PL_origfilename);
6224f72b 2300 else {
cea2e8a9 2301 Perl_croak(aTHX_ "Execution of %s aborted due to compilation errors.\n",
097ee67d 2302 PL_origfilename);
6224f72b
GS
2303 }
2304 }
57843af0 2305 CopLINE_set(PL_curcop, 0);
03d9f026 2306 SET_CURSTASH(PL_defstash);
3280af22
NIS
2307 if (PL_e_script) {
2308 SvREFCNT_dec(PL_e_script);
a0714e2c 2309 PL_e_script = NULL;
6224f72b
GS
2310 }
2311
3280af22 2312 if (PL_do_undump)
6224f72b
GS
2313 my_unexec();
2314
57843af0
GS
2315 if (isWARN_ONCE) {
2316 SAVECOPFILE(PL_curcop);
2317 SAVECOPLINE(PL_curcop);
3280af22 2318 gv_check(PL_defstash);
57843af0 2319 }
6224f72b
GS
2320
2321 LEAVE;
2322 FREETMPS;
2323
2324#ifdef MYMALLOC
f6a607bc
RGS
2325 {
2326 const char *s;
6224f72b
GS
2327 if ((s=PerlEnv_getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
2328 dump_mstats("after compilation:");
f6a607bc 2329 }
6224f72b
GS
2330#endif
2331
2332 ENTER;
febb3a6d 2333 PL_restartjmpenv = NULL;
3280af22 2334 PL_restartop = 0;
312caa8e 2335 return NULL;
6224f72b
GS
2336}
2337
954c1994
GS
2338/*
2339=for apidoc perl_run
2340
2341Tells a Perl interpreter to run. See L<perlembed>.
2342
2343=cut
2344*/
2345
6224f72b 2346int
0cb96387 2347perl_run(pTHXx)
6224f72b 2348{
97aff369 2349 dVAR;
6224f72b 2350 I32 oldscope;
14dd3ad8 2351 int ret = 0;
db36c5a1 2352 dJMPENV;
6224f72b 2353
7918f24d
NC
2354 PERL_ARGS_ASSERT_PERL_RUN;
2355#ifndef MULTIPLICITY
ed6c66dd 2356 PERL_UNUSED_ARG(my_perl);
7918f24d 2357#endif
9d4ba2ae 2358
3280af22 2359 oldscope = PL_scopestack_ix;
96e176bf
CL
2360#ifdef VMS
2361 VMSISH_HUSHED = 0;
2362#endif
6224f72b 2363
14dd3ad8 2364 JMPENV_PUSH(ret);
6224f72b
GS
2365 switch (ret) {
2366 case 1:
2367 cxstack_ix = -1; /* start context stack again */
312caa8e 2368 goto redo_body;
14dd3ad8 2369 case 0: /* normal completion */
14dd3ad8
GS
2370 redo_body:
2371 run_body(oldscope);
14dd3ad8
GS
2372 /* FALL THROUGH */
2373 case 2: /* my_exit() */
3280af22 2374 while (PL_scopestack_ix > oldscope)
6224f72b
GS
2375 LEAVE;
2376 FREETMPS;
03d9f026 2377 SET_CURSTASH(PL_defstash);
3a1ee7e8 2378 if (!(PL_exit_flags & PERL_EXIT_DESTRUCT_END) &&
9ebf26ad 2379 PL_endav && !PL_minus_c) {
ca7b837b 2380 PERL_SET_PHASE(PERL_PHASE_END);
31d77e54 2381 call_list(oldscope, PL_endav);
9ebf26ad 2382 }
6224f72b
GS
2383#ifdef MYMALLOC
2384 if (PerlEnv_getenv("PERL_DEBUG_MSTATS"))
2385 dump_mstats("after execution: ");
2386#endif
37038d91 2387 ret = STATUS_EXIT;
14dd3ad8 2388 break;
6224f72b 2389 case 3:
312caa8e
CS
2390 if (PL_restartop) {
2391 POPSTACK_TO(PL_mainstack);
2392 goto redo_body;
6224f72b 2393 }
5637ef5b 2394 PerlIO_printf(Perl_error_log, "panic: restartop in perl_run\n");
312caa8e 2395 FREETMPS;
14dd3ad8
GS
2396 ret = 1;
2397 break;
6224f72b
GS
2398 }
2399
14dd3ad8
GS
2400 JMPENV_POP;
2401 return ret;
312caa8e
CS
2402}
2403
dd374669 2404STATIC void
14dd3ad8
GS
2405S_run_body(pTHX_ I32 oldscope)
2406{
97aff369 2407 dVAR;
d3b97530
DM
2408 DEBUG_r(PerlIO_printf(Perl_debug_log, "%s $` $& $' support (0x%x).\n",
2409 PL_sawampersand ? "Enabling" : "Omitting",
2410 (unsigned int)(PL_sawampersand)));
6224f72b 2411
3280af22 2412 if (!PL_restartop) {
81d86705
NC
2413#ifdef PERL_MAD
2414 if (PL_xmlfp) {
2415 xmldump_all();
2416 exit(0); /* less likely to core dump than my_exit(0) */
2417 }
2418#endif
cf2782cd 2419#ifdef DEBUGGING
f0e3f042
CS
2420 if (DEBUG_x_TEST || DEBUG_B_TEST)
2421 dump_all_perl(!DEBUG_B_TEST);
ecae49c0
NC
2422 if (!DEBUG_q_TEST)
2423 PERL_DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
cf2782cd 2424#endif
6224f72b 2425
3280af22 2426 if (PL_minus_c) {
bf49b057 2427 PerlIO_printf(Perl_error_log, "%s syntax OK\n", PL_origfilename);
6224f72b
GS
2428 my_exit(0);
2429 }
3280af22 2430 if (PERLDB_SINGLE && PL_DBsingle)
ac27b0f5 2431 sv_setiv(PL_DBsingle, 1);
9ebf26ad 2432 if (PL_initav) {
ca7b837b 2433 PERL_SET_PHASE(PERL_PHASE_INIT);
3280af22 2434 call_list(oldscope, PL_initav);
9ebf26ad 2435 }
f1fac472 2436#ifdef PERL_DEBUG_READONLY_OPS
3107b51f
FC
2437 if (PL_main_root && PL_main_root->op_slabbed)
2438 Slab_to_ro(OpSLAB(PL_main_root));
f1fac472 2439#endif
6224f72b
GS
2440 }
2441
2442 /* do it */
2443
ca7b837b 2444 PERL_SET_PHASE(PERL_PHASE_RUN);
9ebf26ad 2445
3280af22 2446 if (PL_restartop) {
febb3a6d 2447 PL_restartjmpenv = NULL;
533c011a 2448 PL_op = PL_restartop;
3280af22 2449 PL_restartop = 0;
cea2e8a9 2450 CALLRUNOPS(aTHX);
6224f72b 2451 }
3280af22
NIS
2452 else if (PL_main_start) {
2453 CvDEPTH(PL_main_cv) = 1;
533c011a 2454 PL_op = PL_main_start;
cea2e8a9 2455 CALLRUNOPS(aTHX);
6224f72b 2456 }
f6b3007c 2457 my_exit(0);
118e2215 2458 assert(0); /* NOTREACHED */
6224f72b
GS
2459}
2460
954c1994 2461/*
ccfc67b7
JH
2462=head1 SV Manipulation Functions
2463
954c1994
GS
2464=for apidoc p||get_sv
2465
64ace3f8 2466Returns the SV of the specified Perl scalar. C<flags> are passed to
72d33970 2467C<gv_fetchpv>. If C<GV_ADD> is set and the
64ace3f8
NC
2468Perl variable does not exist then it will be created. If C<flags> is zero
2469and the variable does not exist then NULL is returned.
954c1994
GS
2470
2471=cut
2472*/
2473
6224f72b 2474SV*
64ace3f8 2475Perl_get_sv(pTHX_ const char *name, I32 flags)
6224f72b
GS
2476{
2477 GV *gv;
7918f24d
NC
2478
2479 PERL_ARGS_ASSERT_GET_SV;
2480
64ace3f8 2481 gv = gv_fetchpv(name, flags, SVt_PV);
6224f72b
GS
2482 if (gv)
2483 return GvSV(gv);
a0714e2c 2484 return NULL;
6224f72b
GS
2485}
2486
954c1994 2487/*
ccfc67b7
JH
2488=head1 Array Manipulation Functions
2489
954c1994
GS
2490=for apidoc p||get_av
2491
f0b90de1
SF
2492Returns the AV of the specified Perl global or package array with the given
2493name (so it won't work on lexical variables). C<flags> are passed
72d33970 2494to C<gv_fetchpv>. If C<GV_ADD> is set and the
cbfd0a87
NC
2495Perl variable does not exist then it will be created. If C<flags> is zero
2496and the variable does not exist then NULL is returned.
954c1994 2497
f0b90de1
SF
2498Perl equivalent: C<@{"$name"}>.
2499
954c1994
GS
2500=cut
2501*/
2502
6224f72b 2503AV*
cbfd0a87 2504Perl_get_av(pTHX_ const char *name, I32 flags)
6224f72b 2505{
cbfd0a87 2506 GV* const gv = gv_fetchpv(name, flags, SVt_PVAV);
7918f24d
NC
2507
2508 PERL_ARGS_ASSERT_GET_AV;
2509
cbfd0a87 2510 if (flags)
6224f72b
GS
2511 return GvAVn(gv);
2512 if (gv)
2513 return GvAV(gv);
7d49f689 2514 return NULL;
6224f72b
GS
2515}
2516
954c1994 2517/*
ccfc67b7
JH
2518=head1 Hash Manipulation Functions
2519
954c1994
GS
2520=for apidoc p||get_hv
2521
6673a63c 2522Returns the HV of the specified Perl hash. C<flags> are passed to
72d33970 2523C<gv_fetchpv>. If C<GV_ADD> is set and the
6673a63c
NC
2524Perl variable does not exist then it will be created. If C<flags> is zero
2525and the variable does not exist then NULL is returned.
954c1994
GS
2526
2527=cut
2528*/
2529
6224f72b 2530HV*
6673a63c 2531Perl_get_hv(pTHX_ const char *name, I32 flags)
6224f72b 2532{
6673a63c 2533 GV* const gv = gv_fetchpv(name, flags, SVt_PVHV);
7918f24d
NC
2534
2535 PERL_ARGS_ASSERT_GET_HV;
2536
6673a63c 2537 if (flags)
a0d0e21e
LW
2538 return GvHVn(gv);
2539 if (gv)
2540 return GvHV(gv);
5c284bb0 2541 return NULL;
a0d0e21e
LW
2542}
2543
954c1994 2544/*
ccfc67b7
JH
2545=head1 CV Manipulation Functions
2546
780a5241
NC
2547=for apidoc p||get_cvn_flags
2548
2549Returns the CV of the specified Perl subroutine. C<flags> are passed to
72d33970 2550C<gv_fetchpvn_flags>. If C<GV_ADD> is set and the Perl subroutine does not
780a5241
NC
2551exist then it will be declared (which has the same effect as saying
2552C<sub name;>). If C<GV_ADD> is not set and the subroutine does not exist
2553then NULL is returned.
2554
954c1994
GS
2555=for apidoc p||get_cv
2556
780a5241 2557Uses C<strlen> to get the length of C<name>, then calls C<get_cvn_flags>.
954c1994
GS
2558
2559=cut
2560*/
2561
a0d0e21e 2562CV*
780a5241 2563Perl_get_cvn_flags(pTHX_ const char *name, STRLEN len, I32 flags)
a0d0e21e 2564{
780a5241 2565 GV* const gv = gv_fetchpvn_flags(name, len, flags, SVt_PVCV);
7918f24d
NC
2566
2567 PERL_ARGS_ASSERT_GET_CVN_FLAGS;
2568
334dda80
FC
2569 /* XXX this is probably not what they think they're getting.
2570 * It has the same effect as "sub name;", i.e. just a forward
2571 * declaration! */
780a5241 2572 if ((flags & ~GV_NOADD_MASK) && !GvCVu(gv)) {
186a5ba8 2573 return newSTUB(gv,0);
780a5241 2574 }
a0d0e21e 2575 if (gv)
8ebc5c01 2576 return GvCVu(gv);
601f1833 2577 return NULL;
a0d0e21e
LW
2578}
2579
2c67934f
NC
2580/* Nothing in core calls this now, but we can't replace it with a macro and
2581 move it to mathoms.c as a macro would evaluate name twice. */
780a5241
NC
2582CV*
2583Perl_get_cv(pTHX_ const char *name, I32 flags)
2584{
7918f24d
NC
2585 PERL_ARGS_ASSERT_GET_CV;
2586
780a5241
NC
2587 return get_cvn_flags(name, strlen(name), flags);
2588}
2589
79072805
LW
2590/* Be sure to refetch the stack pointer after calling these routines. */
2591
954c1994 2592/*
ccfc67b7
JH
2593
2594=head1 Callback Functions
2595
954c1994
GS
2596=for apidoc p||call_argv
2597
f0b90de1 2598Performs a callback to the specified named and package-scoped Perl subroutine
72d33970
FC
2599with C<argv> (a NULL-terminated array of strings) as arguments. See
2600L<perlcall>.
f0b90de1
SF
2601
2602Approximate Perl equivalent: C<&{"$sub_name"}(@$argv)>.
954c1994
GS
2603
2604=cut
2605*/
2606
a0d0e21e 2607I32
5aaab254 2608Perl_call_argv(pTHX_ const char *sub_name, I32 flags, char **argv)
ac27b0f5 2609
8ac85365
NIS
2610 /* See G_* flags in cop.h */
2611 /* null terminated arg list */
8990e307 2612{
97aff369 2613 dVAR;
a0d0e21e 2614 dSP;
8990e307 2615
7918f24d
NC
2616 PERL_ARGS_ASSERT_CALL_ARGV;
2617
924508f0 2618 PUSHMARK(SP);
a0d0e21e 2619 if (argv) {
8990e307 2620 while (*argv) {
6e449a3a 2621 mXPUSHs(newSVpv(*argv,0));
8990e307
LW
2622 argv++;
2623 }
a0d0e21e 2624 PUTBACK;
8990e307 2625 }
864dbfa3 2626 return call_pv(sub_name, flags);
8990e307
LW
2627}
2628
954c1994
GS
2629/*
2630=for apidoc p||call_pv
2631
2632Performs a callback to the specified Perl sub. See L<perlcall>.
2633
2634=cut
2635*/
2636
a0d0e21e 2637I32
864dbfa3 2638Perl_call_pv(pTHX_ const char *sub_name, I32 flags)
8ac85365
NIS
2639 /* name of the subroutine */
2640 /* See G_* flags in cop.h */
a0d0e21e 2641{
7918f24d
NC
2642 PERL_ARGS_ASSERT_CALL_PV;
2643
0da0e728 2644 return call_sv(MUTABLE_SV(get_cv(sub_name, GV_ADD)), flags);
a0d0e21e
LW
2645}
2646
954c1994
GS
2647/*
2648=for apidoc p||call_method
2649
2650Performs a callback to the specified Perl method. The blessed object must
2651be on the stack. See L<perlcall>.
2652
2653=cut
2654*/
2655
a0d0e21e 2656I32
864dbfa3 2657Perl_call_method(pTHX_ const char *methname, I32 flags)
8ac85365
NIS
2658 /* name of the subroutine */
2659 /* See G_* flags in cop.h */
a0d0e21e 2660{
46ca9bac 2661 STRLEN len;
c106c2be 2662 SV* sv;
7918f24d
NC
2663 PERL_ARGS_ASSERT_CALL_METHOD;
2664
46ca9bac 2665 len = strlen(methname);
c106c2be
RZ
2666 sv = flags & G_METHOD_NAMED
2667 ? sv_2mortal(newSVpvn_share(methname, len,0))
2668 : newSVpvn_flags(methname, len, SVs_TEMP);
46ca9bac 2669
c106c2be 2670 return call_sv(sv, flags | G_METHOD);
a0d0e21e
LW
2671}
2672
2673/* May be called with any of a CV, a GV, or an SV containing the name. */
954c1994
GS
2674/*
2675=for apidoc p||call_sv
2676
2677Performs a callback to the Perl sub whose name is in the SV. See
2678L<perlcall>.
2679
2680=cut
2681*/
2682
a0d0e21e 2683I32
001d637e 2684Perl_call_sv(pTHX_ SV *sv, VOL I32 flags)
8ac85365 2685 /* See G_* flags in cop.h */
a0d0e21e 2686{
27da23d5 2687 dVAR; dSP;
a0d0e21e 2688 LOGOP myop; /* fake syntax tree node */
c106c2be
RZ
2689 UNOP method_unop;
2690 SVOP method_svop;
aa689395 2691 I32 oldmark;
8ea43dc8 2692 VOL I32 retval = 0;
a0d0e21e 2693 I32 oldscope;
54310121 2694 bool oldcatch = CATCH_GET;
6224f72b 2695 int ret;
c4420975 2696 OP* const oldop = PL_op;
db36c5a1 2697 dJMPENV;
1e422769 2698
7918f24d
NC
2699 PERL_ARGS_ASSERT_CALL_SV;
2700
a0d0e21e
LW
2701 if (flags & G_DISCARD) {
2702 ENTER;
2703 SAVETMPS;
2704 }
2f8edad0
NC
2705 if (!(flags & G_WANT)) {
2706 /* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
2707 */
2708 flags |= G_SCALAR;
2709 }
a0d0e21e 2710
aa689395 2711 Zero(&myop, 1, LOGOP);
f51d4af5 2712 if (!(flags & G_NOARGS))
aa689395 2713 myop.op_flags |= OPf_STACKED;
4f911530 2714 myop.op_flags |= OP_GIMME_REVERSE(flags);
462e5cf6 2715 SAVEOP();
533c011a 2716 PL_op = (OP*)&myop;
aa689395 2717
3280af22 2718 EXTEND(PL_stack_sp, 1);
c106c2be
RZ
2719 if (!(flags & G_METHOD_NAMED))
2720 *++PL_stack_sp = sv;
aa689395 2721 oldmark = TOPMARK;
3280af22 2722 oldscope = PL_scopestack_ix;
a0d0e21e 2723
3280af22 2724 if (PERLDB_SUB && PL_curstash != PL_debstash
36477c24 2725 /* Handle first BEGIN of -d. */
3280af22 2726 && (PL_DBcv || (PL_DBcv = GvCV(PL_DBsub)))
36477c24
PP
2727 /* Try harder, since this may have been a sighandler, thus
2728 * curstash may be meaningless. */
ea726b52 2729 && (SvTYPE(sv) != SVt_PVCV || CvSTASH((const CV *)sv) != PL_debstash)
491527d0 2730 && !(flags & G_NODEBUG))
5ff48db8 2731 myop.op_private |= OPpENTERSUB_DB;
a0d0e21e 2732
c106c2be
RZ
2733 if (flags & (G_METHOD|G_METHOD_NAMED)) {
2734 if ( flags & G_METHOD_NAMED ) {
2735 Zero(&method_svop, 1, SVOP);
2736 method_svop.op_next = (OP*)&myop;
2737 method_svop.op_ppaddr = PL_ppaddr[OP_METHOD_NAMED];
2738 method_svop.op_type = OP_METHOD_NAMED;
2739 method_svop.op_sv = sv;
2740 PL_op = (OP*)&method_svop;
2741 } else {
2742 Zero(&method_unop, 1, UNOP);
2743 method_unop.op_next = (OP*)&myop;
2744 method_unop.op_ppaddr = PL_ppaddr[OP_METHOD];
2745 method_unop.op_type = OP_METHOD;
2746 PL_op = (OP*)&method_unop;
2747 }
2748 myop.op_ppaddr = PL_ppaddr[OP_ENTERSUB];
2749 myop.op_type = OP_ENTERSUB;
2750
968b3946
GS
2751 }
2752
312caa8e 2753 if (!(flags & G_EVAL)) {
0cdb2077 2754 CATCH_SET(TRUE);
d6f07c05 2755 CALL_BODY_SUB((OP*)&myop);
312caa8e 2756 retval = PL_stack_sp - (PL_stack_base + oldmark);
0253cb41 2757 CATCH_SET(oldcatch);
312caa8e
CS
2758 }
2759 else {
d78bda3d 2760 myop.op_other = (OP*)&myop;
3280af22 2761 PL_markstack_ptr--;
edb2152a 2762 create_eval_scope(flags|G_FAKINGEVAL);
3280af22 2763 PL_markstack_ptr++;
a0d0e21e 2764
14dd3ad8 2765 JMPENV_PUSH(ret);
edb2152a 2766
6224f72b
GS
2767 switch (ret) {
2768 case 0:
14dd3ad8 2769 redo_body:
d6f07c05 2770 CALL_BODY_SUB((OP*)&myop);
312caa8e 2771 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2772 if (!(flags & G_KEEPERR)) {
ab69dbc2 2773 CLEAR_ERRSV();
8433848b 2774 }
a0d0e21e 2775 break;
6224f72b 2776 case 1:
f86702cc 2777 STATUS_ALL_FAILURE;
a0d0e21e 2778 /* FALL THROUGH */
6224f72b 2779 case 2:
a0d0e21e 2780 /* my_exit() was called */
03d9f026 2781 SET_CURSTASH(PL_defstash);
a0d0e21e 2782 FREETMPS;
14dd3ad8 2783 JMPENV_POP;
f86702cc 2784 my_exit_jump();
118e2215 2785 assert(0); /* NOTREACHED */
6224f72b 2786 case 3:
3280af22 2787 if (PL_restartop) {
febb3a6d 2788 PL_restartjmpenv = NULL;
533c011a 2789 PL_op = PL_restartop;
3280af22 2790 PL_restartop = 0;
312caa8e 2791 goto redo_body;
a0d0e21e 2792 }
3280af22 2793 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2794 if ((flags & G_WANT) == G_ARRAY)
a0d0e21e
LW
2795 retval = 0;
2796 else {
2797 retval = 1;
3280af22 2798 *++PL_stack_sp = &PL_sv_undef;
a0d0e21e 2799 }
312caa8e 2800 break;
a0d0e21e 2801 }
a0d0e21e 2802
edb2152a
NC
2803 if (PL_scopestack_ix > oldscope)
2804 delete_eval_scope();
14dd3ad8 2805 JMPENV_POP;
a0d0e21e 2806 }
1e422769 2807
a0d0e21e 2808 if (flags & G_DISCARD) {
3280af22 2809 PL_stack_sp = PL_stack_base + oldmark;
a0d0e21e
LW
2810 retval = 0;
2811 FREETMPS;
2812 LEAVE;
2813 }
533c011a 2814 PL_op = oldop;
a0d0e21e
LW
2815 return retval;
2816}
2817
6e72f9df 2818/* Eval a string. The G_EVAL flag is always assumed. */
8990e307 2819
954c1994
GS
2820/*
2821=for apidoc p||eval_sv
2822
72d33970
FC
2823Tells Perl to C<eval> the string in the SV. It supports the same flags
2824as C<call_sv>, with the obvious exception of G_EVAL. See L<perlcall>.
954c1994
GS
2825
2826=cut
2827*/
2828
a0d0e21e 2829I32
864dbfa3 2830Perl_eval_sv(pTHX_ SV *sv, I32 flags)
ac27b0f5 2831
8ac85365 2832 /* See G_* flags in cop.h */
a0d0e21e 2833{
97aff369 2834 dVAR;
924508f0 2835 dSP;
a0d0e21e 2836 UNOP myop; /* fake syntax tree node */
8ea43dc8
SP
2837 VOL I32 oldmark = SP - PL_stack_base;
2838 VOL I32 retval = 0;
6224f72b 2839 int ret;
c4420975 2840 OP* const oldop = PL_op;
db36c5a1 2841 dJMPENV;
84902520 2842
7918f24d
NC
2843 PERL_ARGS_ASSERT_EVAL_SV;
2844
4633a7c4
LW
2845 if (flags & G_DISCARD) {
2846 ENTER;
2847 SAVETMPS;
2848 }
2849
462e5cf6 2850 SAVEOP();
533c011a 2851 PL_op = (OP*)&myop;
5ff48db8 2852 Zero(&myop, 1, UNOP);
3280af22
NIS
2853 EXTEND(PL_stack_sp, 1);
2854 *++PL_stack_sp = sv;
79072805 2855
4633a7c4
LW
2856 if (!(flags & G_NOARGS))
2857 myop.op_flags = OPf_STACKED;
6e72f9df 2858 myop.op_type = OP_ENTEREVAL;
4f911530 2859 myop.op_flags |= OP_GIMME_REVERSE(flags);
6e72f9df
PP
2860 if (flags & G_KEEPERR)
2861 myop.op_flags |= OPf_SPECIAL;
a1941760
DM
2862
2863 if (flags & G_RE_REPARSING)
2864 myop.op_private = (OPpEVAL_COPHH | OPpEVAL_RE_REPARSING);
4633a7c4 2865
dedbcade
DM
2866 /* fail now; otherwise we could fail after the JMPENV_PUSH but
2867 * before a PUSHEVAL, which corrupts the stack after a croak */
2868 TAINT_PROPER("eval_sv()");
2869
14dd3ad8 2870 JMPENV_PUSH(ret);
6224f72b
GS
2871 switch (ret) {
2872 case 0:
14dd3ad8 2873 redo_body:
2ba65d5f
DM
2874 if (PL_op == (OP*)(&myop)) {
2875 PL_op = PL_ppaddr[OP_ENTEREVAL](aTHX);
2876 if (!PL_op)
2877 goto fail; /* failed in compilation */
2878 }
4aca2f62 2879 CALLRUNOPS(aTHX);
312caa8e 2880 retval = PL_stack_sp - (PL_stack_base + oldmark);
8433848b 2881 if (!(flags & G_KEEPERR)) {
ab69dbc2 2882 CLEAR_ERRSV();
8433848b 2883 }
4633a7c4 2884 break;
6224f72b 2885 case 1:
f86702cc 2886 STATUS_ALL_FAILURE;
4633a7c4 2887 /* FALL THROUGH */
6224f72b 2888 case 2:
4633a7c4 2889 /* my_exit() was called */
03d9f026 2890 SET_CURSTASH(PL_defstash);
4633a7c4 2891 FREETMPS;
14dd3ad8 2892 JMPENV_POP;
f86702cc 2893 my_exit_jump();
118e2215 2894 assert(0); /* NOTREACHED */
6224f72b 2895 case 3:
3280af22 2896 if (PL_restartop) {
febb3a6d 2897 PL_restartjmpenv = NULL;
533c011a 2898 PL_op = PL_restartop;
3280af22 2899 PL_restartop = 0;
312caa8e 2900 goto redo_body;
4633a7c4 2901 }
4aca2f62 2902 fail:
3280af22 2903 PL_stack_sp = PL_stack_base + oldmark;
51ce5529 2904 if ((flags & G_WANT) == G_ARRAY)
4633a7c4
LW
2905 retval = 0;
2906 else {
2907 retval = 1;
3280af22 2908 *++PL_stack_sp = &PL_sv_undef;
4633a7c4 2909 }
312caa8e 2910 break;
4633a7c4
LW
2911 }
2912
14dd3ad8 2913 JMPENV_POP;
4633a7c4 2914 if (flags & G_DISCARD) {
3280af22 2915 PL_stack_sp = PL_stack_base + oldmark;
4633a7c4
LW
2916 retval = 0;
2917 FREETMPS;
2918 LEAVE;
2919 }
533c011a 2920 PL_op = oldop;
4633a7c4
LW
2921 return retval;
2922}
2923
954c1994
GS
2924/*
2925=for apidoc p||eval_pv
2926
2927Tells Perl to C<eval> the given string and return an SV* result.
2928
2929=cut
2930*/
2931
137443ea 2932SV*
864dbfa3 2933Perl_eval_pv(pTHX_ const char *p, I32 croak_on_error)
137443ea 2934{
97aff369 2935 dVAR;
137443ea
PP
2936 SV* sv = newSVpv(p, 0);
2937
7918f24d
NC
2938 PERL_ARGS_ASSERT_EVAL_PV;
2939
864dbfa3 2940 eval_sv(sv, G_SCALAR);
137443ea
PP
2941 SvREFCNT_dec(sv);
2942
ed1786ad
DD
2943 {
2944 dSP;
2945 sv = POPs;
2946 PUTBACK;
2947 }
137443ea 2948
eed484f9
DD
2949 /* just check empty string or undef? */
2950 if (croak_on_error) {
2951 SV * const errsv = ERRSV;
2952 if(SvTRUE_NN(errsv))
2953 /* replace with croak_sv? */
2954 Perl_croak_nocontext("%s", SvPV_nolen_const(errsv));
2d8e6c8d 2955 }
137443ea
PP
2956
2957 return sv;
2958}
2959
4633a7c4
LW
2960/* Require a module. */
2961
954c1994 2962/*
ccfc67b7
JH
2963=head1 Embedding Functions
2964
954c1994
GS
2965=for apidoc p||require_pv
2966
7d3fb230
BS
2967Tells Perl to C<require> the file named by the string argument. It is
2968analogous to the Perl code C<eval "require '$file'">. It's even
2307c6d0 2969implemented that way; consider using load_module instead.
954c1994 2970
7d3fb230 2971=cut */
954c1994 2972
4633a7c4 2973void
864dbfa3 2974Perl_require_pv(pTHX_ const char *pv)
4633a7c4 2975{
97aff369 2976 dVAR;
d3acc0f7 2977 dSP;
97aff369 2978 SV* sv;
7918f24d
NC
2979
2980 PERL_ARGS_ASSERT_REQUIRE_PV;
2981
e788e7d3 2982 PUSHSTACKi(PERLSI_REQUIRE);
be41e5d9
NC
2983 sv = Perl_newSVpvf(aTHX_ "require q%c%s%c", 0, pv, 0);
2984 eval_sv(sv_2mortal(sv), G_DISCARD);
d3acc0f7 2985 POPSTACK;
79072805
LW
2986}
2987
76e3520e 2988STATIC void
b6f82619 2989S_usage(pTHX) /* XXX move this out into a module ? */
4633a7c4 2990{
ab821d7f 2991 /* This message really ought to be max 23 lines.
75c72d73 2992 * Removed -h because the user already knows that option. Others? */
fb73857a 2993
1566c39d
NC
2994 /* Grouped as 6 lines per C string literal, to keep under the ANSI C 89
2995 minimum of 509 character string literals. */
27da23d5 2996 static const char * const usage_msg[] = {
1566c39d
NC
2997" -0[octal] specify record separator (\\0, if no argument)\n"
2998" -a autosplit mode with -n or -p (splits $_ into @F)\n"
2999" -C[number/list] enables the listed Unicode features\n"
3000" -c check syntax only (runs BEGIN and CHECK blocks)\n"
3001" -d[:debugger] run program under debugger\n"
3002" -D[number/list] set debugging flags (argument is a bit mask or alphabets)\n",
3003" -e program one line of program (several -e's allowed, omit programfile)\n"
3004" -E program like -e, but enables all optional features\n"
3005" -f don't do $sitelib/sitecustomize.pl at startup\n"
3006" -F/pattern/ split() pattern for -a switch (//'s are optional)\n"
3007" -i[extension] edit <> files in place (makes backup if extension supplied)\n"
3008" -Idirectory specify @INC/#include directory (several -I's allowed)\n",
3009" -l[octal] enable line ending processing, specifies line terminator\n"
3010" -[mM][-]module execute \"use/no module...\" before executing program\n"
3011" -n assume \"while (<>) { ... }\" loop around program\n"
3012" -p assume loop like -n but print line also, like sed\n"
3013" -s enable rudimentary parsing for switches after programfile\n"
3014" -S look for programfile using PATH environment variable\n",
3015" -t enable tainting warnings\n"
3016" -T enable tainting checks\n"
3017" -u dump core after parsing program\n"
3018" -U allow unsafe operations\n"
3019" -v print version, patchlevel and license\n"
3020" -V[:variable] print configuration summary (or a single Config.pm variable)\n",
60eaec42 3021" -w enable many useful warnings\n"
1566c39d
NC
3022" -W enable all warnings\n"
3023" -x[directory] ignore text before #!perl line (optionally cd to directory)\n"
3024" -X disable all warnings\n"
3025" \n"
3026"Run 'perldoc perl' for more help with Perl.\n\n",
fb73857a
PP
3027NULL
3028};
27da23d5 3029 const char * const *p = usage_msg;
1566c39d 3030 PerlIO *out = PerlIO_stdout();
fb73857a 3031
1566c39d
NC
3032 PerlIO_printf(out,
3033 "\nUsage: %s [switches] [--] [programfile] [arguments]\n",
b6f82619 3034 PL_origargv[0]);
fb73857a 3035 while (*p)
1566c39d 3036 PerlIO_puts(out, *p++);
b6f82619 3037 my_exit(0);
4633a7c4
LW
3038}
3039
b4ab917c
DM
3040/* convert a string of -D options (or digits) into an int.
3041 * sets *s to point to the char after the options */
3042
3043#ifdef DEBUGGING
3044int
e1ec3a88 3045Perl_get_debug_opts(pTHX_ const char **s, bool givehelp)
b4ab917c 3046{
27da23d5 3047 static const char * const usage_msgd[] = {
651b8f1a
NC
3048 " Debugging flag values: (see also -d)\n"
3049 " p Tokenizing and parsing (with v, displays parse stack)\n"
3050 " s Stack snapshots (with v, displays all stacks)\n"
3051 " l Context (loop) stack processing\n"
3052 " t Trace execution\n"
3053 " o Method and overloading resolution\n",
3054 " c String/numeric conversions\n"
3055 " P Print profiling info, source file input state\n"
3056 " m Memory and SV allocation\n"
3057 " f Format processing\n"
3058 " r Regular expression parsing and execution\n"
3059 " x Syntax tree dump\n",
3060 " u Tainting checks\n"
3061 " H Hash dump -- usurps values()\n"
3062 " X Scratchpad allocation\n"
3063 " D Cleaning up\n"
56967202 3064 " S Op slab allocation\n"
651b8f1a
NC
3065 " T Tokenising\n"
3066 " R Include reference counts of dumped variables (eg when using -Ds)\n",
3067 " J Do not s,t,P-debug (Jump over) opcodes within package DB\n"
3068 " v Verbose: use in conjunction with other flags\n"
3069 " C Copy On Write\n"
3070 " A Consistency checks on internal structures\n"
3071 " q quiet - currently only suppresses the 'EXECUTING' message\n"
3072 " M trace smart match resolution\n"
3073 " B dump suBroutine definitions, including special Blocks like BEGIN\n",
69014004 3074 " L trace some locale setting information--for Perl core development\n",
e6e64d9b
JC
3075 NULL
3076 };
b4ab917c 3077 int i = 0;
7918f24d
NC
3078
3079 PERL_ARGS_ASSERT_GET_DEBUG_OPTS;
3080
b4ab917c
DM
3081 if (isALPHA(**s)) {
3082 /* if adding extra options, remember to update DEBUG_MASK */
69014004 3083 static const char debopts[] = "psltocPmfrxuUHXDSTRJvCAqMBL";
b4ab917c 3084
0eb30aeb 3085 for (; isWORDCHAR(**s); (*s)++) {
c4420975 3086 const char * const d = strchr(debopts,**s);
b4ab917c
DM
3087 if (d)
3088 i |= 1 << (d - debopts);
3089 else if (ckWARN_d(WARN_DEBUGGING))
e6e64d9b
JC
3090 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3091 "invalid option -D%c, use -D'' to see choices\n", **s);
b4ab917c
DM
3092 }
3093 }
e6e64d9b 3094 else if (isDIGIT(**s)) {
b4ab917c 3095 i = atoi(*s);
0eb30aeb 3096 for (; isWORDCHAR(**s); (*s)++) ;
b4ab917c 3097 }
ddcf8bc1 3098 else if (givehelp) {
06e869a4 3099 const char *const *p = usage_msgd;
651b8f1a 3100 while (*p) PerlIO_puts(PerlIO_stdout(), *p++);
e6e64d9b 3101 }
b4ab917c
DM
3102# ifdef EBCDIC
3103 if ((i & DEBUG_p_FLAG) && ckWARN_d(WARN_DEBUGGING))
3104 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
3105 "-Dp not implemented on this platform\n");
3106# endif
3107 return i;
3108}
3109#endif
3110
79072805
LW
3111/* This routine handles any switches that can be given during run */
3112
c7030b81
NC
3113const char *
3114Perl_moreswitches(pTHX_ const char *s)
79072805 3115{
27da23d5 3116 dVAR;
84c133a0 3117 UV rschar;
0544e6df 3118 const char option = *s; /* used to remember option in -m/-M code */
79072805 3119
7918f24d
NC
3120 PERL_ARGS_ASSERT_MORESWITCHES;
3121
79072805
LW
3122 switch (*s) {
3123 case '0':
a863c7d1 3124 {
f2095865 3125 I32 flags = 0;
a3b680e6 3126 STRLEN numlen;
f2095865
JH
3127
3128 SvREFCNT_dec(PL_rs);
3129 if (s[1] == 'x' && s[2]) {
a3b680e6 3130 const char *e = s+=2;
f2095865
JH
3131 U8 *tmps;
3132
a3b680e6
AL
3133 while (*e)
3134 e++;
f2095865
JH
3135 numlen = e - s;
3136 flags = PERL_SCAN_SILENT_ILLDIGIT;
3137 rschar = (U32)grok_hex(s, &numlen, &flags, NULL);
3138 if (s + numlen < e) {
3139 rschar = 0; /* Grandfather -0xFOO as -0 -xFOO. */
3140 numlen = 0;
3141 s--;
3142 }
396482e1 3143 PL_rs = newSVpvs("");
c5661c80 3144 SvGROW(PL_rs, (STRLEN)(UNISKIP(rschar) + 1));
f2095865
JH
3145 tmps = (U8*)SvPVX(PL_rs);
3146 uvchr_to_utf8(tmps, rschar);
3147 SvCUR_set(PL_rs, UNISKIP(rschar));
3148 SvUTF8_on(PL_rs);
3149 }
3150 else {
3151 numlen = 4;
3152 rschar = (U32)grok_oct(s, &numlen, &flags, NULL);
3153 if (rschar & ~((U8)~0))
3154 PL_rs = &PL_sv_undef;
3155 else if (!rschar && numlen >= 2)
396482e1 3156 PL_rs = newSVpvs("");
f2095865
JH
3157 else {
3158 char ch = (char)rschar;
3159 PL_rs = newSVpvn(&ch, 1);
3160 }
3161 }
64ace3f8 3162 sv_setsv(get_sv("/", GV_ADD), PL_rs);
f2095865 3163 return s + numlen;
a863c7d1 3164 }
46487f74 3165 case 'C':
a05d7ebb 3166 s++;
dd374669 3167 PL_unicode = parse_unicode_opts( (const char **)&s );
5a22a2bb
NC
3168 if (PL_unicode & PERL_UNICODE_UTF8CACHEASSERT_FLAG)
3169 PL_utf8cache = -1;
46487f74 3170 return s;
2304df62 3171 case 'F':
5fc691f1 3172 PL_minus_a = TRUE;
3280af22 3173 PL_minus_F = TRUE;
24ffa309 3174 PL_minus_n = TRUE;
ebce5377
RGS
3175 PL_splitstr = ++s;
3176 while (*s && !isSPACE(*s)) ++s;
e49e380e 3177 PL_splitstr = savepvn(PL_splitstr, s - PL_splitstr);
2304df62 3178 return s;
79072805 3179 case 'a':
3280af22 3180 PL_minus_a = TRUE;
24ffa309 3181 PL_minus_n = TRUE;
79072805
LW
3182 s++;
3183 return s;
3184 case 'c':
3280af22 3185 PL_minus_c = TRUE;
79072805
LW
3186 s++;
3187 return s;
3188 case 'd':
f20b2998 3189 forbid_setid('d', FALSE);
4633a7c4 3190 s++;
2cbb2ee1
RGS
3191
3192 /* -dt indicates to the debugger that threads will be used */
0eb30aeb 3193 if (*s == 't' && !isWORDCHAR(s[1])) {
2cbb2ee1
RGS
3194 ++s;
3195 my_setenv("PERL5DB_THREADED", "1");
3196 }
3197
70c94a19
RR
3198 /* The following permits -d:Mod to accepts arguments following an =
3199 in the fashion that -MSome::Mod does. */
3200 if (*s == ':' || *s == '=') {
b19934fb
NC
3201 const char *start;
3202 const char *end;
3203 SV *sv;
3204
3205 if (*++s == '-') {
3206 ++s;
3207 sv = newSVpvs("no Devel::");
3208 } else {
3209 sv = newSVpvs("use Devel::");
3210 }
3211
3212 start = s;
3213 end = s + strlen(s);
f85893a1 3214
b19934fb 3215 /* We now allow -d:Module=Foo,Bar and -d:-Module */
0eb30aeb 3216 while(isWORDCHAR(*s) || *s==':') ++s;
70c94a19 3217 if (*s != '=')
f85893a1 3218 sv_catpvn(sv, start, end - start);
70c94a19
RR
3219 else {
3220 sv_catpvn(sv, start, s-start);
95a2b409
RGS
3221 /* Don't use NUL as q// delimiter here, this string goes in the
3222 * environment. */
3223 Perl_sv_catpvf(aTHX_ sv, " split(/,/,q{%s});", ++s);
70c94a19 3224 }
f85893a1 3225 s = end;
184f32ec 3226 my_setenv("PERL5DB", SvPV_nolen_const(sv));
c4db126b 3227 SvREFCNT_dec(sv);
4633a7c4 3228 }
ed094faf 3229 if (!PL_perldb) {
3280af22 3230 PL_perldb = PERLDB_ALL;
a0d0e21e 3231 init_debugger();
ed094faf 3232 }
79072805
LW
3233 return s;
3234 case 'D':
0453d815 3235 {
79072805 3236#ifdef DEBUGGING
f20b2998 3237 forbid_setid('D', FALSE);
b4ab917c 3238 s++;
dd374669 3239 PL_debug = get_debug_opts( (const char **)&s, 1) | DEBUG_TOP_FLAG;
12a43e32 3240#else /* !DEBUGGING */
0453d815 3241 if (ckWARN_d(WARN_DEBUGGING))
9014280d 3242 Perl_warner(aTHX_ packWARN(WARN_DEBUGGING),
e6e64d9b 3243 "Recompile perl with -DDEBUGGING to use -D switch (did you mean -d ?)\n");
0eb30aeb 3244 for (s++; isWORDCHAR(*s); s++) ;
79072805 3245#endif
79072805 3246 return s;
0453d815 3247 }
4633a7c4 3248 case 'h':
b6f82619 3249 usage();
79072805 3250 case 'i':
43c5f42d 3251 Safefree(PL_inplace);
c030f24b
GH
3252#if defined(__CYGWIN__) /* do backup extension automagically */
3253 if (*(s+1) == '\0') {
c86a4f2e 3254 PL_inplace = savepvs(".bak");
c030f24b
GH
3255 return s+1;
3256 }
3257#endif /* __CYGWIN__ */
5ef5d758 3258 {
d4c19fe8 3259 const char * const start = ++s;
5ef5d758
NC
3260 while (*s && !isSPACE(*s))
3261 ++s;
3262
3263 PL_inplace = savepvn(start, s - start);
3264 }
7b8d334a 3265 if (*s) {
5ef5d758 3266 ++s;
7b8d334a 3267 if (*s == '-') /* Additional switches on #! line. */
5ef5d758 3268 s++;
7b8d334a 3269 }
fb73857a 3270 return s;
4e49a025 3271 case 'I': /* -I handled both here and in parse_body() */
f20b2998 3272 forbid_setid('I', FALSE);
fb73857a
PP
3273 ++s;
3274 while (*s && isSPACE(*s))
3275 ++s;
3276 if (*s) {
c7030b81 3277 const char *e, *p;
0df16ed7
GS
3278 p = s;
3279 /* ignore trailing spaces (possibly followed by other switches) */
3280 do {
3281 for (e = p; *e && !isSPACE(*e); e++) ;
3282 p = e;
3283 while (isSPACE(*p))
3284 p++;
3285 } while (*p && *p != '-');
55b4bc1c 3286 incpush(s, e-s,
e28f3139 3287 INCPUSH_ADD_SUB_DIRS|INCPUSH_ADD_OLD_VERS|INCPUSH_UNSHIFT);
0df16ed7
GS
3288 s = p;
3289 if (*s == '-')
3290 s++;
79072805
LW
3291 }
3292 else
a67e862a 3293 Perl_croak(aTHX_ "No directory specified for -I");
fb73857a 3294 return s;
79072805 3295 case 'l':
3280af22 3296 PL_minus_l = TRUE;
79072805 3297 s++;
7889fe52
NIS
3298 if (PL_ors_sv) {
3299 SvREFCNT_dec(PL_ors_sv);
a0714e2c 3300 PL_ors_sv = NULL;
7889fe52 3301 }
79072805 3302 if (isDIGIT(*s)) {
53305cf1 3303 I32 flags = 0;
a3b680e6 3304 STRLEN numlen;
396482e1 3305 PL_ors_sv = newSVpvs("\n");
53305cf1
NC
3306 numlen = 3 + (*s == '0');
3307 *SvPVX(PL_ors_sv) = (char)grok_oct(s, &numlen, &flags, NULL);
79072805
LW
3308 s += numlen;
3309 }
3310 else {
8bfdd7d9 3311 if (RsPARA(PL_rs)) {
396482e1 3312 PL_ors_sv = newSVpvs("\n\n");
7889fe52
NIS
3313 }
3314 else {
8bfdd7d9 3315 PL_ors_sv = newSVsv(PL_rs);
c07a80fd 3316 }
79072805
LW
3317 }
3318 return s;
1a30305b 3319 case 'M':
f20b2998 3320 forbid_setid('M', FALSE); /* XXX ? */
1a30305b
PP
3321 /* FALL THROUGH */
3322 case 'm':
f20b2998 3323 forbid_setid('m', FALSE); /* XXX ? */
1a30305b 3324 if (*++s) {
c7030b81 3325 const char *start;
b64cb68c 3326 const char *end;
11343788 3327 SV *sv;
e1ec3a88 3328 const char *use = "use ";
0544e6df 3329 bool colon = FALSE;
a5f75d66 3330 /* -M-foo == 'no foo' */
d0043bd1
NC
3331 /* Leading space on " no " is deliberate, to make both
3332 possibilities the same length. */
3333 if (*s == '-') { use = " no "; ++s; }
3334 sv = newSVpvn(use,4);
a5f75d66 3335 start = s;
1a30305b 3336 /* We allow -M'Module qw(Foo Bar)' */
0eb30aeb 3337 while(isWORDCHAR(*s) || *s==':') {
0544e6df
RB
3338 if( *s++ == ':' ) {
3339 if( *s == ':' )
3340 s++;
3341 else
3342 colon = TRUE;
3343 }
3344 }
3345 if (s == start)
3346 Perl_croak(aTHX_ "Module name required with -%c option",
3347 option);
3348 if (colon)
3349 Perl_croak(aTHX_ "Invalid module name %.*s with -%c option: "
3350 "contains single ':'",
63da6837 3351 (int)(s - start), start, option);
b64cb68c 3352 end = s + strlen(s);
c07a80fd 3353 if (*s != '=') {
b64cb68c 3354 sv_catpvn(sv, start, end - start);
0544e6df 3355 if (option == 'm') {
c07a80fd 3356 if (*s != '\0')
cea2e8a9 3357 Perl_croak(aTHX_ "Can't use '%c' after -mname", *s);
396482e1 3358 sv_catpvs( sv, " ()");
c07a80fd
PP
3359 }
3360 } else {
11343788 3361 sv_catpvn(sv, start, s-start);
b64cb68c
NC
3362 /* Use NUL as q''-delimiter. */
3363 sv_catpvs(sv, " split(/,/,q\0");
3364 ++s;
3365 sv_catpvn(sv, s, end - s);
396482e1 3366 sv_catpvs(sv, "\0)");
c07a80fd 3367 }
b64cb68c 3368 s = end;
29a861e7 3369 Perl_av_create_and_push(aTHX_ &PL_preambleav, sv);
1a30305b
PP
3370 }
3371 else
0544e6df 3372 Perl_croak(aTHX_ "Missing argument to -%c", option);
1a30305b 3373 return s;
79072805 3374 case 'n':
3280af22 3375 PL_minus_n = TRUE;
79072805
LW
3376 s++;
3377 return s;
3378 case 'p':
3280af22 3379 PL_minus_p = TRUE;
79072805
LW
3380 s++;
3381 return s;
3382 case 's':
f20b2998 3383 forbid_setid('s', FALSE);
3280af22 3384 PL_doswitches = TRUE;
79072805
LW
3385 s++;
3386 return s;
6537fe72 3387 case 't':
27a6968b 3388 case 'T':
dc6d7f5c 3389#if defined(SILENT_NO_TAINT_SUPPORT)
284167a5 3390 /* silently ignore */
dc6d7f5c 3391#elif defined(NO_TAINT_SUPPORT)
3231f579 3392 Perl_croak_nocontext("This perl was compiled without taint support. "
284167a5
SM
3393 "Cowardly refusing to run with -t or -T flags");
3394#else
3395 if (!TAINTING_get)
27a6968b 3396 TOO_LATE_FOR(*s);
284167a5 3397#endif
6537fe72 3398 s++;
463ee0b2 3399 return s;
79072805 3400 case 'u':
3280af22 3401 PL_do_undump = TRUE;
79072805
LW
3402 s++;
3403 return s;
3404 case 'U':
3280af22 3405 PL_unsafe = TRUE;
79072805
LW
3406 s++;
3407 return s;
3408 case 'v':
c4bc78d9
NC
3409 minus_v();
3410 case 'w':
3411 if (! (PL_dowarn & G_WARN_ALL_MASK)) {
3412 PL_dowarn |= G_WARN_ON;
3413 }
3414 s++;
3415 return s;
3416 case 'W':
3417 PL_dowarn = G_WARN_ALL_ON|G_WARN_ON;
3418 if (!specialWARN(PL_compiling.cop_warnings))
3419 PerlMemShared_free(PL_compiling.cop_warnings);
3420 PL_compiling.cop_warnings = pWARN_ALL ;
3421 s++;
3422 return s;
3423 case 'X':
3424 PL_dowarn = G_WARN_ALL_OFF;
3425 if (!specialWARN(PL_compiling.cop_warnings))
3426 PerlMemShared_free(PL_compiling.cop_warnings);
3427 PL_compiling.cop_warnings = pWARN_NONE ;
3428 s++;
3429 return s;
3430 case '*':
3431 case ' ':
3432 while( *s == ' ' )
3433 ++s;
3434 if (s[0] == '-') /* Additional switches on #! line. */
3435 return s+1;
3436 break;
3437 case '-':
3438 case 0:
3439#if defined(WIN32) || !defined(PERL_STRICT_CR)
3440 case '\r':
3441#endif
3442 case '\n':
3443 case '\t':
3444 break;
3445#ifdef ALTERNATE_SHEBANG
3446 case 'S': /* OS/2 needs -S on "extproc" line. */
3447 break;
3448#endif
4bb78d63
CB
3449 case 'e': case 'f': case 'x': case 'E':
3450#ifndef ALTERNATE_SHEBANG
3451 case 'S':
3452#endif
3453 case 'V':
c4bc78d9 3454 Perl_croak(aTHX_ "Can't emulate -%.1s on #! line",s);
b7e077d0
FC
3455 default:
3456 Perl_croak(aTHX_
3457 "Unrecognized switch: -%.1s (-h will show valid options)",s
3458 );
c4bc78d9
NC
3459 }
3460 return NULL;
3461}
3462
3463
3464STATIC void
3465S_minus_v(pTHX)
3466{
fc3381af 3467 PerlIO * PIO_stdout;
46807d8e 3468 {
709aee94
DD
3469 const char * const level_str = "v" PERL_VERSION_STRING;
3470 const STRLEN level_len = sizeof("v" PERL_VERSION_STRING)-1;
46807d8e 3471#ifdef PERL_PATCHNUM
709aee94 3472 SV* level;
23d483e2 3473# ifdef PERL_GIT_UNCOMMITTED_CHANGES
709aee94 3474 static const char num [] = PERL_PATCHNUM "*";
23d483e2 3475# else
709aee94 3476 static const char num [] = PERL_PATCHNUM;
23d483e2 3477# endif
fc3381af 3478 {
709aee94
DD
3479 const STRLEN num_len = sizeof(num)-1;
3480 /* A very advanced compiler would fold away the strnEQ
3481 and this whole conditional, but most (all?) won't do it.
3482 SV level could also be replaced by with preprocessor
3483 catenation.
3484 */
3485 if (num_len >= level_len && strnEQ(num,level_str,level_len)) {
3486 /* per 46807d8e80, PERL_PATCHNUM is outside of the control
3487 of the interp so it might contain format characters
3488 */
3489 level = newSVpvn(num, num_len);
fc3381af 3490 } else {
709aee94 3491 level = Perl_newSVpvf_nocontext("%s (%s)", level_str, num);
fc3381af 3492 }
46807d8e 3493 }
709aee94
DD
3494#else
3495 SV* level = newSVpvn(level_str, level_len);
3496#endif /* #ifdef PERL_PATCHNUM */
fc3381af
DD
3497 PIO_stdout = PerlIO_stdout();
3498 PerlIO_printf(PIO_stdout,
ded326e4
DG
3499 "\nThis is perl " STRINGIFY(PERL_REVISION)
3500 ", version " STRINGIFY(PERL_VERSION)
3501 ", subversion " STRINGIFY(PERL_SUBVERSION)
3502 " (%"SVf") built for " ARCHNAME, level
3503 );
709aee94 3504 SvREFCNT_dec_NN(level);
46807d8e 3505 }
fb73857a
PP
3506#if defined(LOCAL_PAT