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perlio tweaks (reported by Nicholas Clark)
[perl5.git] / util.c
CommitLineData
a0d0e21e 1/* util.c
a687059c 2 *
bc89e66f 3 * Copyright (c) 1991-2001, Larry Wall
a687059c 4 *
d48672a2
LW		 5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
8d063cd8 8 */
a0d0e21e
LW		 9
10/*
11 * "Very useful, no doubt, that was to Saruman; yet it seems that he was
12 * not content." --Gandalf
13 */
8d063cd8 14
8d063cd8 15#include "EXTERN.h"
864dbfa3 16#define PERL_IN_UTIL_C
8d063cd8 17#include "perl.h"
62b28dd9 18
64ca3a65 19#ifndef PERL_MICRO
e1dfb34b 20#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
a687059c 21#include <signal.h>
62b28dd9 22#endif
a687059c 23
36477c24 24#ifndef SIG_ERR
25# define SIG_ERR ((Sighandler_t) -1)
26#endif
64ca3a65 27#endif
36477c24 28
a687059c
LW		 29#ifdef I_VFORK
30# include <vfork.h>
31#endif
32
94b6baf5
AD		 33/* Put this after #includes because fork and vfork prototypes may
34 conflict.
35*/
36#ifndef HAS_VFORK
37# define vfork fork
38#endif
39
ff68c719 40#ifdef I_SYS_WAIT
41# include <sys/wait.h>
42#endif
43
097ee67d
JH		 44#ifdef I_LOCALE
45# include <locale.h>
46#endif
47
8d063cd8 48#define FLUSH
8d063cd8 49
a0d0e21e 50#ifdef LEAKTEST
a0d0e21e 51
8c52afec
IZ		 52long xcount[MAXXCOUNT];
53long lastxcount[MAXXCOUNT];
54long xycount[MAXXCOUNT][MAXYCOUNT];
55long lastxycount[MAXXCOUNT][MAXYCOUNT];
56
a0d0e21e 57#endif
a863c7d1 58
16cebae2
GS		 59#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
60# define FD_CLOEXEC 1 /* NeXT needs this */
61#endif
62
f2517201 63/* paranoid version of system's malloc() */
8d063cd8 64
a687059c
LW		 65/* NOTE: Do not call the next three routines directly. Use the macros
66 * in handy.h, so that we can easily redefine everything to do tracking of
67 * allocated hunks back to the original New to track down any memory leaks.
20cec16a 68 * XXX This advice seems to be widely ignored :-( --AD August 1996.
a687059c
LW		 69 */
70
bd4080b3 71Malloc_t
4f63d024 72Perl_safesysmalloc(MEM_SIZE size)
8d063cd8 73{
54aff467 74 dTHX;
bd4080b3 75 Malloc_t ptr;
55497cff 76#ifdef HAS_64K_LIMIT
62b28dd9 77 if (size > 0xffff) {
bf49b057 78 PerlIO_printf(Perl_error_log,
16cebae2 79 "Allocation too large: %lx\n", size) FLUSH;
54aff467 80 my_exit(1);
62b28dd9 81 }
55497cff 82#endif /* HAS_64K_LIMIT */
34de22dd
LW		 83#ifdef DEBUGGING
84 if ((long)size < 0)
4f63d024 85 Perl_croak_nocontext("panic: malloc");
34de22dd 86#endif
12ae5dfc 87 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 88 PERL_ALLOC_CHECK(ptr);
97835f67 89 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
8d063cd8
LW		 90 if (ptr != Nullch)
91 return ptr;
3280af22 92 else if (PL_nomemok)
7c0587c8 93 return Nullch;
8d063cd8 94 else {
bf49b057 95 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 96 my_exit(1);
4e35701f 97 return Nullch;
8d063cd8
LW		 98 }
99 /*NOTREACHED*/
100}
101
f2517201 102/* paranoid version of system's realloc() */
8d063cd8 103
bd4080b3 104Malloc_t
4f63d024 105Perl_safesysrealloc(Malloc_t where,MEM_SIZE size)
8d063cd8 106{
54aff467 107 dTHX;
bd4080b3 108 Malloc_t ptr;
9a34ef1d 109#if !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) && !defined(PERL_MICRO)
6ad3d225 110 Malloc_t PerlMem_realloc();
ecfc5424 111#endif /* !defined(STANDARD_C) && !defined(HAS_REALLOC_PROTOTYPE) */
8d063cd8 112
a1d180c4 113#ifdef HAS_64K_LIMIT
5f05dabc 114 if (size > 0xffff) {
bf49b057 115 PerlIO_printf(Perl_error_log,
5f05dabc 116 "Reallocation too large: %lx\n", size) FLUSH;
54aff467 117 my_exit(1);
5f05dabc 118 }
55497cff 119#endif /* HAS_64K_LIMIT */
7614df0c 120 if (!size) {
f2517201 121 safesysfree(where);
7614df0c
JD		 122 return NULL;
123 }
124
378cc40b 125 if (!where)
f2517201 126 return safesysmalloc(size);
34de22dd
LW		 127#ifdef DEBUGGING
128 if ((long)size < 0)
4f63d024 129 Perl_croak_nocontext("panic: realloc");
34de22dd 130#endif
12ae5dfc 131 ptr = (Malloc_t)PerlMem_realloc(where,size);
da927450 132 PERL_ALLOC_CHECK(ptr);
a1d180c4 133
97835f67
JH		 134 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) rfree\n",PTR2UV(where),(long)PL_an++));
135 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) realloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
79072805 136
8d063cd8
LW		 137 if (ptr != Nullch)
138 return ptr;
3280af22 139 else if (PL_nomemok)
7c0587c8 140 return Nullch;
8d063cd8 141 else {
bf49b057 142 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 143 my_exit(1);
4e35701f 144 return Nullch;
8d063cd8
LW		 145 }
146 /*NOTREACHED*/
147}
148
f2517201 149/* safe version of system's free() */
8d063cd8 150
54310121 151Free_t
4f63d024 152Perl_safesysfree(Malloc_t where)
8d063cd8 153{
155aba94 154#ifdef PERL_IMPLICIT_SYS
54aff467 155 dTHX;
155aba94 156#endif
97835f67 157 DEBUG_m( PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) free\n",PTR2UV(where),(long)PL_an++));
378cc40b 158 if (where) {
de3bb511 159 /*SUPPRESS 701*/
6ad3d225 160 PerlMem_free(where);
378cc40b 161 }
8d063cd8
LW		 162}
163
f2517201 164/* safe version of system's calloc() */
1050c9ca 165
bd4080b3 166Malloc_t
4f63d024 167Perl_safesyscalloc(MEM_SIZE count, MEM_SIZE size)
1050c9ca 168{
54aff467 169 dTHX;
bd4080b3 170 Malloc_t ptr;
1050c9ca 171
55497cff 172#ifdef HAS_64K_LIMIT
5f05dabc 173 if (size * count > 0xffff) {
bf49b057 174 PerlIO_printf(Perl_error_log,
5f05dabc 175 "Allocation too large: %lx\n", size * count) FLUSH;
54aff467 176 my_exit(1);
5f05dabc 177 }
55497cff 178#endif /* HAS_64K_LIMIT */
1050c9ca 179#ifdef DEBUGGING
180 if ((long)size < 0 || (long)count < 0)
4f63d024 181 Perl_croak_nocontext("panic: calloc");
1050c9ca 182#endif
0b7c1c42 183 size *= count;
12ae5dfc 184 ptr = (Malloc_t)PerlMem_malloc(size?size:1); /* malloc(0) is NASTY on our system */
da927450 185 PERL_ALLOC_CHECK(ptr);
97835f67 186 DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%"UVxf": (%05ld) calloc %ld x %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)count,(long)size));
1050c9ca 187 if (ptr != Nullch) {
188 memset((void*)ptr, 0, size);
189 return ptr;
190 }
3280af22 191 else if (PL_nomemok)
1050c9ca 192 return Nullch;
193 else {
bf49b057 194 PerlIO_puts(Perl_error_log,PL_no_mem) FLUSH;
54aff467 195 my_exit(1);
4e35701f 196 return Nullch;
1050c9ca 197 }
198 /*NOTREACHED*/
199}
200
a687059c
LW		 201#ifdef LEAKTEST
202
8c52afec
IZ		 203struct mem_test_strut {
204 union {
205 long type;
206 char c[2];
207 } u;
208 long size;
209};
210
211# define ALIGN sizeof(struct mem_test_strut)
212
213# define sizeof_chunk(ch) (((struct mem_test_strut*) (ch))->size)
214# define typeof_chunk(ch) \
215 (((struct mem_test_strut*) (ch))->u.c[0] + ((struct mem_test_strut*) (ch))->u.c[1]*100)
216# define set_typeof_chunk(ch,t) \
217 (((struct mem_test_strut*) (ch))->u.c[0] = t % 100, ((struct mem_test_strut*) (ch))->u.c[1] = t / 100)
218#define SIZE_TO_Y(size) ( (size) > MAXY_SIZE \
219 ? MAXYCOUNT - 1 \
220 : ( (size) > 40 \
221 ? ((size) - 1)/8 + 5 \
222 : ((size) - 1)/4))
8d063cd8 223
bd4080b3 224Malloc_t
4f63d024 225Perl_safexmalloc(I32 x, MEM_SIZE size)
8d063cd8 226{
8c52afec 227 register char* where = (char*)safemalloc(size + ALIGN);
8d063cd8 228
8c52afec
IZ		 229 xcount[x] += size;
230 xycount[x][SIZE_TO_Y(size)]++;
231 set_typeof_chunk(where, x);
232 sizeof_chunk(where) = size;
233 return (Malloc_t)(where + ALIGN);
8d063cd8 234}
8d063cd8 235
bd4080b3 236Malloc_t
4f63d024 237Perl_safexrealloc(Malloc_t wh, MEM_SIZE size)
a687059c 238{
8c52afec
IZ		 239 char *where = (char*)wh;
240
241 if (!wh)
242 return safexmalloc(0,size);
a1d180c4 243
8c52afec
IZ		 244 {
245 MEM_SIZE old = sizeof_chunk(where - ALIGN);
246 int t = typeof_chunk(where - ALIGN);
247 register char* new = (char*)saferealloc(where - ALIGN, size + ALIGN);
a1d180c4 248
8c52afec
IZ		 249 xycount[t][SIZE_TO_Y(old)]--;
250 xycount[t][SIZE_TO_Y(size)]++;
251 xcount[t] += size - old;
252 sizeof_chunk(new) = size;
253 return (Malloc_t)(new + ALIGN);
254 }
a687059c
LW		 255}
256
257void
4f63d024 258Perl_safexfree(Malloc_t wh)
a687059c 259{
79072805 260 I32 x;
8c52afec
IZ		 261 char *where = (char*)wh;
262 MEM_SIZE size;
a1d180c4 263
a687059c
LW		 264 if (!where)
265 return;
266 where -= ALIGN;
8c52afec 267 size = sizeof_chunk(where);
a687059c 268 x = where[0] + 100 * where[1];
8c52afec
IZ		 269 xcount[x] -= size;
270 xycount[x][SIZE_TO_Y(size)]--;
a687059c
LW		 271 safefree(where);
272}
273
bd4080b3 274Malloc_t
4f63d024 275Perl_safexcalloc(I32 x,MEM_SIZE count, MEM_SIZE size)
1050c9ca 276{
8c52afec
IZ		 277 register char * where = (char*)safexmalloc(x, size * count + ALIGN);
278 xcount[x] += size;
279 xycount[x][SIZE_TO_Y(size)]++;
280 memset((void*)(where + ALIGN), 0, size * count);
281 set_typeof_chunk(where, x);
282 sizeof_chunk(where) = size;
283 return (Malloc_t)(where + ALIGN);
1050c9ca 284}
285
864dbfa3 286STATIC void
cea2e8a9 287S_xstat(pTHX_ int flag)
8d063cd8 288{
8c52afec
IZ		 289 register I32 i, j, total = 0;
290 I32 subtot[MAXYCOUNT];
8d063cd8 291
8c52afec
IZ		 292 for (j = 0; j < MAXYCOUNT; j++) {
293 subtot[j] = 0;
294 }
a1d180c4 295
bf49b057 296 PerlIO_printf(Perl_debug_log, " Id subtot 4 8 12 16 20 24 28 32 36 40 48 56 64 72 80 80+\n", total);
a687059c 297 for (i = 0; i < MAXXCOUNT; i++) {
8c52afec
IZ		 298 total += xcount[i];
299 for (j = 0; j < MAXYCOUNT; j++) {
300 subtot[j] += xycount[i][j];
301 }
302 if (flag == 0
303 ? xcount[i] /* Have something */
a1d180c4 304 : (flag == 2
8c52afec
IZ		 305 ? xcount[i] != lastxcount[i] /* Changed */
306 : xcount[i] > lastxcount[i])) { /* Growed */
a1d180c4 307 PerlIO_printf(Perl_debug_log,"%2d %02d %7ld ", i / 100, i % 100,
8c52afec 308 flag == 2 ? xcount[i] - lastxcount[i] : xcount[i]);
a687059c 309 lastxcount[i] = xcount[i];
8c52afec 310 for (j = 0; j < MAXYCOUNT; j++) {
a1d180c4 311 if ( flag == 0
8c52afec 312 ? xycount[i][j] /* Have something */
a1d180c4 313 : (flag == 2
8c52afec
IZ		 314 ? xycount[i][j] != lastxycount[i][j] /* Changed */
315 : xycount[i][j] > lastxycount[i][j])) { /* Growed */
a1d180c4
NIS		 316 PerlIO_printf(Perl_debug_log,"%3ld ",
317 flag == 2
318 ? xycount[i][j] - lastxycount[i][j]
8c52afec
IZ		 319 : xycount[i][j]);
320 lastxycount[i][j] = xycount[i][j];
321 } else {
bf49b057 322 PerlIO_printf(Perl_debug_log, " . ", xycount[i][j]);
8c52afec
IZ		 323 }
324 }
bf49b057 325 PerlIO_printf(Perl_debug_log, "\n");
8c52afec
IZ		 326 }
327 }
328 if (flag != 2) {
bf49b057 329 PerlIO_printf(Perl_debug_log, "Total %7ld ", total);
8c52afec
IZ		 330 for (j = 0; j < MAXYCOUNT; j++) {
331 if (subtot[j]) {
bf49b057 332 PerlIO_printf(Perl_debug_log, "%3ld ", subtot[j]);
8c52afec 333 } else {
bf49b057 334 PerlIO_printf(Perl_debug_log, " . ");
8c52afec 335 }
8d063cd8 336 }
bf49b057 337 PerlIO_printf(Perl_debug_log, "\n");
8d063cd8 338 }
8d063cd8 339}
a687059c
LW		 340
341#endif /* LEAKTEST */
8d063cd8
LW		 342
343/* copy a string up to some (non-backslashed) delimiter, if any */
344
345char *
864dbfa3 346Perl_delimcpy(pTHX_ register char *to, register char *toend, register char *from, register char *fromend, register int delim, I32 *retlen)
8d063cd8 347{
fc36a67e 348 register I32 tolen;
349 for (tolen = 0; from < fromend; from++, tolen++) {
378cc40b
LW		 350 if (*from == '\\') {
351 if (from[1] == delim)
352 from++;
fc36a67e 353 else {
354 if (to < toend)
355 *to++ = *from;
356 tolen++;
357 from++;
358 }
378cc40b 359 }
bedebaa5 360 else if (*from == delim)
8d063cd8 361 break;
fc36a67e 362 if (to < toend)
363 *to++ = *from;
8d063cd8 364 }
bedebaa5
CS		 365 if (to < toend)
366 *to = '\0';
fc36a67e 367 *retlen = tolen;
8d063cd8
LW		 368 return from;
369}
370
371/* return ptr to little string in big string, NULL if not found */
378cc40b 372/* This routine was donated by Corey Satten. */
8d063cd8
LW		 373
374char *
864dbfa3 375Perl_instr(pTHX_ register const char *big, register const char *little)
378cc40b 376{
08105a92 377 register const char *s, *x;
79072805 378 register I32 first;
378cc40b 379
a687059c 380 if (!little)
08105a92 381 return (char*)big;
a687059c 382 first = *little++;
378cc40b 383 if (!first)
08105a92 384 return (char*)big;
378cc40b
LW		 385 while (*big) {
386 if (*big++ != first)
387 continue;
388 for (x=big,s=little; *s; /**/ ) {
389 if (!*x)
390 return Nullch;
391 if (*s++ != *x++) {
392 s--;
393 break;
394 }
395 }
396 if (!*s)
08105a92 397 return (char*)(big-1);
378cc40b
LW		 398 }
399 return Nullch;
400}
8d063cd8 401
a687059c
LW		 402/* same as instr but allow embedded nulls */
403
404char *
864dbfa3 405Perl_ninstr(pTHX_ register const char *big, register const char *bigend, const char *little, const char *lend)
8d063cd8 406{
08105a92 407 register const char *s, *x;
79072805 408 register I32 first = *little;
08105a92 409 register const char *littleend = lend;
378cc40b 410
a0d0e21e 411 if (!first && little >= littleend)
08105a92 412 return (char*)big;
de3bb511
LW		 413 if (bigend - big < littleend - little)
414 return Nullch;
a687059c
LW		 415 bigend -= littleend - little++;
416 while (big <= bigend) {
417 if (*big++ != first)
418 continue;
419 for (x=big,s=little; s < littleend; /**/ ) {
420 if (*s++ != *x++) {
421 s--;
422 break;
423 }
424 }
425 if (s >= littleend)
08105a92 426 return (char*)(big-1);
378cc40b 427 }
a687059c
LW		 428 return Nullch;
429}
430
431/* reverse of the above--find last substring */
432
433char *
864dbfa3 434Perl_rninstr(pTHX_ register const char *big, const char *bigend, const char *little, const char *lend)
a687059c 435{
08105a92
GS		 436 register const char *bigbeg;
437 register const char *s, *x;
79072805 438 register I32 first = *little;
08105a92 439 register const char *littleend = lend;
a687059c 440
a0d0e21e 441 if (!first && little >= littleend)
08105a92 442 return (char*)bigend;
a687059c
LW		 443 bigbeg = big;
444 big = bigend - (littleend - little++);
445 while (big >= bigbeg) {
446 if (*big-- != first)
447 continue;
448 for (x=big+2,s=little; s < littleend; /**/ ) {
449 if (*s++ != *x++) {
450 s--;
451 break;
452 }
453 }
454 if (s >= littleend)
08105a92 455 return (char*)(big+1);
378cc40b 456 }
a687059c 457 return Nullch;
378cc40b 458}
a687059c 459
bbce6d69 460/*
461 * Set up for a new ctype locale.
462 */
55497cff 463void
ff4fed7c 464Perl_new_ctype(pTHX_ char *newctype)
ef7eada9 465{
36477c24 466#ifdef USE_LOCALE_CTYPE
467
bbce6d69 468 int i;
ef7eada9 469
bbce6d69 470 for (i = 0; i < 256; i++) {
471 if (isUPPER_LC(i))
22c35a8c 472 PL_fold_locale[i] = toLOWER_LC(i);
bbce6d69 473 else if (isLOWER_LC(i))
22c35a8c 474 PL_fold_locale[i] = toUPPER_LC(i);
bbce6d69 475 else
22c35a8c 476 PL_fold_locale[i] = i;
bbce6d69 477 }
bbce6d69 478
36477c24 479#endif /* USE_LOCALE_CTYPE */
480}
bbce6d69 481
482/*
ff4fed7c
VK		 483 * Standardize the locale name from a string returned by 'setlocale'.
484 *
485 * The standard return value of setlocale() is either
486 * (1) "xx_YY" if the first argument of setlocale() is not LC_ALL
487 * (2) "xa_YY xb_YY ..." if the first argument of setlocale() is LC_ALL
488 * (the space-separated values represent the various sublocales,
489 * in some unspecificed order)
490 *
491 * In some platforms it has a form like "LC_SOMETHING=Lang_Country.866\n",
492 * which is harmful for further use of the string in setlocale().
493 *
494 */
495STATIC char *
496S_stdize_locale(pTHX_ char *locs)
497{
498 char *s;
499 bool okay = TRUE;
500
501 if ((s = strchr(locs, '='))) {
502 char *t;
503
504 okay = FALSE;
505 if ((t = strchr(s, '.'))) {
506 char *u;
507
508 if ((u = strchr(t, '\n'))) {
509
510 if (u[1] == 0) {
511 STRLEN len = u - s;
a528dad0 512 Move(s + 1, locs, len, char);
ff4fed7c
VK		 513 locs[len] = 0;
514 okay = TRUE;
515 }
516 }
517 }
518 }
519
520 if (!okay)
521 Perl_croak(aTHX_ "Can't fix broken locale name \"%s\"", locs);
522
523 return locs;
524}
525
526/*
bbce6d69 527 * Set up for a new collation locale.
528 */
529void
ff4fed7c 530Perl_new_collate(pTHX_ char *newcoll)
bbce6d69 531{
36477c24 532#ifdef USE_LOCALE_COLLATE
533
bbce6d69 534 if (! newcoll) {
3280af22 535 if (PL_collation_name) {
9b3a60d0 536 ++PL_collation_ix;
3280af22
NIS		 537 Safefree(PL_collation_name);
538 PL_collation_name = NULL;
bbce6d69 539 }
ff4fed7c
VK		 540 PL_collation_standard = TRUE;
541 PL_collxfrm_base = 0;
542 PL_collxfrm_mult = 2;
bbce6d69 543 return;
544 }
545
3280af22 546 if (! PL_collation_name || strNE(PL_collation_name, newcoll)) {
9b3a60d0
JH		 547 ++PL_collation_ix;
548 Safefree(PL_collation_name);
549 PL_collation_name = stdize_locale(savepv(newcoll));
3280af22 550 PL_collation_standard = (strEQ(newcoll, "C") || strEQ(newcoll, "POSIX"));
bbce6d69 551
bbce6d69 552 {
553 /* 2: at most so many chars ('a', 'b'). */
554 /* 50: surely no system expands a char more. */
555#define XFRMBUFSIZE (2 * 50)
556 char xbuf[XFRMBUFSIZE];
557 Size_t fa = strxfrm(xbuf, "a", XFRMBUFSIZE);
558 Size_t fb = strxfrm(xbuf, "ab", XFRMBUFSIZE);
559 SSize_t mult = fb - fa;
560 if (mult < 1)
cea2e8a9 561 Perl_croak(aTHX_ "strxfrm() gets absurd");
3280af22
NIS		 562 PL_collxfrm_base = (fa > mult) ? (fa - mult) : 0;
563 PL_collxfrm_mult = mult;
bbce6d69 564 }
bbce6d69 565 }
bbce6d69 566
36477c24 567#endif /* USE_LOCALE_COLLATE */
568}
bbce6d69 569
097ee67d 570void
51371543 571Perl_set_numeric_radix(pTHX)
097ee67d
JH		 572{
573#ifdef USE_LOCALE_NUMERIC
574# ifdef HAS_LOCALECONV
575 struct lconv* lc;
576
577 lc = localeconv();
eff180cd
JH		 578 if (lc && lc->decimal_point) {
579 if (lc->decimal_point[0] == '.' && lc->decimal_point[1] == 0) {
580 SvREFCNT_dec(PL_numeric_radix);
581 PL_numeric_radix = 0;
582 }
583 else {
584 if (PL_numeric_radix)
585 sv_setpv(PL_numeric_radix, lc->decimal_point);
586 else
587 PL_numeric_radix = newSVpv(lc->decimal_point, 0);
588 }
589 }
097ee67d
JH		 590 else
591 PL_numeric_radix = 0;
592# endif /* HAS_LOCALECONV */
097ee67d
JH		 593#endif /* USE_LOCALE_NUMERIC */
594}
595
bbce6d69 596/*
597 * Set up for a new numeric locale.
598 */
599void
ff4fed7c 600Perl_new_numeric(pTHX_ char *newnum)
bbce6d69 601{
36477c24 602#ifdef USE_LOCALE_NUMERIC
603
bbce6d69 604 if (! newnum) {
3280af22
NIS		 605 if (PL_numeric_name) {
606 Safefree(PL_numeric_name);
607 PL_numeric_name = NULL;
bbce6d69 608 }
ff4fed7c
VK		 609 PL_numeric_standard = TRUE;
610 PL_numeric_local = TRUE;
bbce6d69 611 return;
612 }
613
3280af22 614 if (! PL_numeric_name || strNE(PL_numeric_name, newnum)) {
9b3a60d0
JH		 615 Safefree(PL_numeric_name);
616 PL_numeric_name = stdize_locale(savepv(newnum));
3280af22
NIS		 617 PL_numeric_standard = (strEQ(newnum, "C") || strEQ(newnum, "POSIX"));
618 PL_numeric_local = TRUE;
51371543 619 set_numeric_radix();
bbce6d69 620 }
36477c24 621
622#endif /* USE_LOCALE_NUMERIC */
bbce6d69 623}
624
625void
864dbfa3 626Perl_set_numeric_standard(pTHX)
bbce6d69 627{
5f05dabc 628#ifdef USE_LOCALE_NUMERIC
629
3280af22 630 if (! PL_numeric_standard) {
bbce6d69 631 setlocale(LC_NUMERIC, "C");
3280af22
NIS		 632 PL_numeric_standard = TRUE;
633 PL_numeric_local = FALSE;
ff4fed7c 634 set_numeric_radix();
bbce6d69 635 }
5f05dabc 636
637#endif /* USE_LOCALE_NUMERIC */
bbce6d69 638}
639
640void
864dbfa3 641Perl_set_numeric_local(pTHX)
bbce6d69 642{
5f05dabc 643#ifdef USE_LOCALE_NUMERIC
644
3280af22
NIS		 645 if (! PL_numeric_local) {
646 setlocale(LC_NUMERIC, PL_numeric_name);
647 PL_numeric_standard = FALSE;
648 PL_numeric_local = TRUE;
51371543 649 set_numeric_radix();
bbce6d69 650 }
bbce6d69 651
36477c24 652#endif /* USE_LOCALE_NUMERIC */
5f05dabc 653}
36477c24 654
36477c24 655/*
656 * Initialize locale awareness.
657 */
f0c5b223 658int
864dbfa3 659Perl_init_i18nl10n(pTHX_ int printwarn)
f0c5b223
TB		 660{
661 int ok = 1;
662 /* returns
663 * 1 = set ok or not applicable,
664 * 0 = fallback to C locale,
665 * -1 = fallback to C locale failed
666 */
bbce6d69 667
b1281dbe 668#if defined(USE_LOCALE)
bbce6d69 669
36477c24 670#ifdef USE_LOCALE_CTYPE
bbce6d69 671 char *curctype = NULL;
36477c24 672#endif /* USE_LOCALE_CTYPE */
673#ifdef USE_LOCALE_COLLATE
bbce6d69 674 char *curcoll = NULL;
36477c24 675#endif /* USE_LOCALE_COLLATE */
676#ifdef USE_LOCALE_NUMERIC
bbce6d69 677 char *curnum = NULL;
36477c24 678#endif /* USE_LOCALE_NUMERIC */
3aeabbed
JH		 679#ifdef __GLIBC__
680 char *language = PerlEnv_getenv("LANGUAGE");
681#endif
76e3520e
GS		 682 char *lc_all = PerlEnv_getenv("LC_ALL");
683 char *lang = PerlEnv_getenv("LANG");
bbce6d69 684 bool setlocale_failure = FALSE;
f0c5b223 685
02b32252
CS		 686#ifdef LOCALE_ENVIRON_REQUIRED
687
688 /*
689 * Ultrix setlocale(..., "") fails if there are no environment
690 * variables from which to get a locale name.
691 */
692
693 bool done = FALSE;
694
695#ifdef LC_ALL
696 if (lang) {
697 if (setlocale(LC_ALL, ""))
698 done = TRUE;
699 else
700 setlocale_failure = TRUE;
701 }
0644c9cb 702 if (!setlocale_failure) {
02b32252 703#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 704 if (! (curctype =
705 setlocale(LC_CTYPE,
706 (!done && (lang || PerlEnv_getenv("LC_CTYPE")))
02b32252
CS		 707 ? "" : Nullch)))
708 setlocale_failure = TRUE;
f4182098
AB		 709 else
710 curctype = savepv(curctype);
02b32252
CS		 711#endif /* USE_LOCALE_CTYPE */
712#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 713 if (! (curcoll =
714 setlocale(LC_COLLATE,
715 (!done && (lang || PerlEnv_getenv("LC_COLLATE")))
02b32252
CS		 716 ? "" : Nullch)))
717 setlocale_failure = TRUE;
f4182098
AB		 718 else
719 curcoll = savepv(curcoll);
02b32252
CS		 720#endif /* USE_LOCALE_COLLATE */
721#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 722 if (! (curnum =
723 setlocale(LC_NUMERIC,
724 (!done && (lang || PerlEnv_getenv("LC_NUMERIC")))
02b32252
CS		 725 ? "" : Nullch)))
726 setlocale_failure = TRUE;
f4182098
AB		 727 else
728 curnum = savepv(curnum);
02b32252
CS		 729#endif /* USE_LOCALE_NUMERIC */
730 }
731
0644c9cb 732#endif /* LC_ALL */
02b32252 733
0644c9cb 734#endif /* !LOCALE_ENVIRON_REQUIRED */
5f05dabc 735
0644c9cb 736#ifdef LC_ALL
bbce6d69 737 if (! setlocale(LC_ALL, ""))
738 setlocale_failure = TRUE;
0644c9cb 739#endif /* LC_ALL */
bbce6d69 740
0644c9cb 741 if (!setlocale_failure) {
36477c24 742#ifdef USE_LOCALE_CTYPE
0644c9cb
IS		 743 if (! (curctype = setlocale(LC_CTYPE, "")))
744 setlocale_failure = TRUE;
f4182098
AB		 745 else
746 curctype = savepv(curctype);
36477c24 747#endif /* USE_LOCALE_CTYPE */
748#ifdef USE_LOCALE_COLLATE
0644c9cb
IS		 749 if (! (curcoll = setlocale(LC_COLLATE, "")))
750 setlocale_failure = TRUE;
f4182098
AB		 751 else
752 curcoll = savepv(curcoll);
36477c24 753#endif /* USE_LOCALE_COLLATE */
754#ifdef USE_LOCALE_NUMERIC
0644c9cb
IS		 755 if (! (curnum = setlocale(LC_NUMERIC, "")))
756 setlocale_failure = TRUE;
f4182098
AB		 757 else
758 curnum = savepv(curnum);
36477c24 759#endif /* USE_LOCALE_NUMERIC */
0644c9cb 760 }
02b32252 761
5f05dabc 762 if (setlocale_failure) {
763 char *p;
a1d180c4 764 bool locwarn = (printwarn > 1 ||
155aba94
GS		 765 (printwarn &&
766 (!(p = PerlEnv_getenv("PERL_BADLANG")) || atoi(p))));
20cec16a 767
5f05dabc 768 if (locwarn) {
769#ifdef LC_ALL
a1d180c4 770
bf49b057 771 PerlIO_printf(Perl_error_log,
5f05dabc 772 "perl: warning: Setting locale failed.\n");
773
774#else /* !LC_ALL */
a1d180c4 775
bf49b057 776 PerlIO_printf(Perl_error_log,
bbce6d69 777 "perl: warning: Setting locale failed for the categories:\n\t");
36477c24 778#ifdef USE_LOCALE_CTYPE
bbce6d69 779 if (! curctype)
bf49b057 780 PerlIO_printf(Perl_error_log, "LC_CTYPE ");
36477c24 781#endif /* USE_LOCALE_CTYPE */
782#ifdef USE_LOCALE_COLLATE
bbce6d69 783 if (! curcoll)
bf49b057 784 PerlIO_printf(Perl_error_log, "LC_COLLATE ");
36477c24 785#endif /* USE_LOCALE_COLLATE */
786#ifdef USE_LOCALE_NUMERIC
bbce6d69 787 if (! curnum)
bf49b057 788 PerlIO_printf(Perl_error_log, "LC_NUMERIC ");
36477c24 789#endif /* USE_LOCALE_NUMERIC */
bf49b057 790 PerlIO_printf(Perl_error_log, "\n");
bbce6d69 791
5f05dabc 792#endif /* LC_ALL */
793
bf49b057 794 PerlIO_printf(Perl_error_log,
bbce6d69 795 "perl: warning: Please check that your locale settings:\n");
ef7eada9 796
3aeabbed 797#ifdef __GLIBC__
bf49b057 798 PerlIO_printf(Perl_error_log,
3aeabbed
JH		 799 "\tLANGUAGE = %c%s%c,\n",
800 language ? '"' : '(',
801 language ? language : "unset",
802 language ? '"' : ')');
803#endif
804
bf49b057 805 PerlIO_printf(Perl_error_log,
bbce6d69 806 "\tLC_ALL = %c%s%c,\n",
807 lc_all ? '"' : '(',
808 lc_all ? lc_all : "unset",
809 lc_all ? '"' : ')');
5f05dabc 810
b1281dbe 811#if defined(USE_ENVIRON_ARRAY)
5f05dabc 812 {
813 char **e;
814 for (e = environ; *e; e++) {
815 if (strnEQ(*e, "LC_", 3)
816 && strnNE(*e, "LC_ALL=", 7)
817 && (p = strchr(*e, '=')))
bf49b057 818 PerlIO_printf(Perl_error_log, "\t%.*s = \"%s\",\n",
fb73857a 819 (int)(p - *e), *e, p + 1);
5f05dabc 820 }
821 }
b1281dbe
JH		 822#else
823 PerlIO_printf(Perl_error_log,
824 "\t(possibly more locale environment variables)\n");
825#endif
5f05dabc 826
bf49b057 827 PerlIO_printf(Perl_error_log,
bbce6d69 828 "\tLANG = %c%s%c\n",
5f05dabc 829 lang ? '"' : '(',
bbce6d69 830 lang ? lang : "unset",
831 lang ? '"' : ')');
ef7eada9 832
bf49b057 833 PerlIO_printf(Perl_error_log,
bbce6d69 834 " are supported and installed on your system.\n");
5f05dabc 835 }
ef7eada9 836
5f05dabc 837#ifdef LC_ALL
838
839 if (setlocale(LC_ALL, "C")) {
840 if (locwarn)
bf49b057 841 PerlIO_printf(Perl_error_log,
5f05dabc 842 "perl: warning: Falling back to the standard locale (\"C\").\n");
bbce6d69 843 ok = 0;
ef7eada9 844 }
5f05dabc 845 else {
846 if (locwarn)
bf49b057 847 PerlIO_printf(Perl_error_log,
5f05dabc 848 "perl: warning: Failed to fall back to the standard locale (\"C\").\n");
849 ok = -1;
850 }
bbce6d69 851
5f05dabc 852#else /* ! LC_ALL */
853
854 if (0
36477c24 855#ifdef USE_LOCALE_CTYPE
5f05dabc 856 || !(curctype || setlocale(LC_CTYPE, "C"))
36477c24 857#endif /* USE_LOCALE_CTYPE */
858#ifdef USE_LOCALE_COLLATE
5f05dabc 859 || !(curcoll || setlocale(LC_COLLATE, "C"))
36477c24 860#endif /* USE_LOCALE_COLLATE */
861#ifdef USE_LOCALE_NUMERIC
5f05dabc 862 || !(curnum || setlocale(LC_NUMERIC, "C"))
36477c24 863#endif /* USE_LOCALE_NUMERIC */
5f05dabc 864 )
865 {
866 if (locwarn)
bf49b057 867 PerlIO_printf(Perl_error_log,
5f05dabc 868 "perl: warning: Cannot fall back to the standard locale (\"C\").\n");
869 ok = -1;
bbce6d69 870 }
5f05dabc 871
bbce6d69 872#endif /* ! LC_ALL */
5f05dabc 873
874#ifdef USE_LOCALE_CTYPE
f4182098 875 curctype = savepv(setlocale(LC_CTYPE, Nullch));
5f05dabc 876#endif /* USE_LOCALE_CTYPE */
877#ifdef USE_LOCALE_COLLATE
f4182098 878 curcoll = savepv(setlocale(LC_COLLATE, Nullch));
5f05dabc 879#endif /* USE_LOCALE_COLLATE */
880#ifdef USE_LOCALE_NUMERIC
f4182098 881 curnum = savepv(setlocale(LC_NUMERIC, Nullch));
5f05dabc 882#endif /* USE_LOCALE_NUMERIC */
ef7eada9 883 }
f4182098 884 else {
ef7eada9 885
36477c24 886#ifdef USE_LOCALE_CTYPE
864dbfa3 887 new_ctype(curctype);
36477c24 888#endif /* USE_LOCALE_CTYPE */
bbce6d69 889
36477c24 890#ifdef USE_LOCALE_COLLATE
864dbfa3 891 new_collate(curcoll);
36477c24 892#endif /* USE_LOCALE_COLLATE */
bbce6d69 893
36477c24 894#ifdef USE_LOCALE_NUMERIC
864dbfa3 895 new_numeric(curnum);
36477c24 896#endif /* USE_LOCALE_NUMERIC */
f4182098 897 }
ef7eada9 898
b1281dbe 899#endif /* USE_LOCALE */
ef7eada9 900
f4182098
AB		 901#ifdef USE_LOCALE_CTYPE
902 if (curctype != NULL)
903 Safefree(curctype);
904#endif /* USE_LOCALE_CTYPE */
905#ifdef USE_LOCALE_COLLATE
906 if (curcoll != NULL)
907 Safefree(curcoll);
908#endif /* USE_LOCALE_COLLATE */
909#ifdef USE_LOCALE_NUMERIC
910 if (curnum != NULL)
911 Safefree(curnum);
912#endif /* USE_LOCALE_NUMERIC */
f0c5b223
TB		 913 return ok;
914}
915
bbce6d69 916/* Backwards compatibility. */
917int
864dbfa3 918Perl_init_i18nl14n(pTHX_ int printwarn)
bbce6d69 919{
864dbfa3 920 return init_i18nl10n(printwarn);
bbce6d69 921}
ef7eada9 922
36477c24 923#ifdef USE_LOCALE_COLLATE
ef7eada9 924
bbce6d69 925/*
926 * mem_collxfrm() is a bit like strxfrm() but with two important
927 * differences. First, it handles embedded NULs. Second, it allocates
928 * a bit more memory than needed for the transformed data itself.
929 * The real transformed data begins at offset sizeof(collationix).
930 * Please see sv_collxfrm() to see how this is used.
931 */
932char *
864dbfa3 933Perl_mem_collxfrm(pTHX_ const char *s, STRLEN len, STRLEN *xlen)
bbce6d69 934{
935 char *xbuf;
76e3520e 936 STRLEN xAlloc, xin, xout; /* xalloc is a reserved word in VC */
bbce6d69 937
938 /* the first sizeof(collationix) bytes are used by sv_collxfrm(). */
939 /* the +1 is for the terminating NUL. */
940
3280af22 941 xAlloc = sizeof(PL_collation_ix) + PL_collxfrm_base + (PL_collxfrm_mult * len) + 1;
76e3520e 942 New(171, xbuf, xAlloc, char);
bbce6d69 943 if (! xbuf)
944 goto bad;
945
3280af22
NIS		 946 *(U32*)xbuf = PL_collation_ix;
947 xout = sizeof(PL_collation_ix);
bbce6d69 948 for (xin = 0; xin < len; ) {
949 SSize_t xused;
950
951 for (;;) {
76e3520e 952 xused = strxfrm(xbuf + xout, s + xin, xAlloc - xout);
bbce6d69 953 if (xused == -1)
954 goto bad;
76e3520e 955 if (xused < xAlloc - xout)
bbce6d69 956 break;
76e3520e
GS		 957 xAlloc = (2 * xAlloc) + 1;
958 Renew(xbuf, xAlloc, char);
bbce6d69 959 if (! xbuf)
960 goto bad;
961 }
ef7eada9 962
bbce6d69 963 xin += strlen(s + xin) + 1;
964 xout += xused;
965
966 /* Embedded NULs are understood but silently skipped
967 * because they make no sense in locale collation. */
968 }
ef7eada9 969
bbce6d69 970 xbuf[xout] = '\0';
3280af22 971 *xlen = xout - sizeof(PL_collation_ix);
bbce6d69 972 return xbuf;
973
974 bad:
975 Safefree(xbuf);
976 *xlen = 0;
977 return NULL;
ef7eada9
JH		 978}
979
36477c24 980#endif /* USE_LOCALE_COLLATE */
bbce6d69 981
cf93c79d
IZ		 982#define FBM_TABLE_OFFSET 2 /* Number of bytes between EOS and table*/
983
984/* As a space optimization, we do not compile tables for strings of length
985 0 and 1, and for strings of length 2 unless FBMcf_TAIL. These are
986 special-cased in fbm_instr().
987
988 If FBMcf_TAIL, the table is created as if the string has a trailing \n. */
989
954c1994
GS		 990/*
991=for apidoc fbm_compile
992
993Analyses the string in order to make fast searches on it using fbm_instr()
994-- the Boyer-Moore algorithm.
995
996=cut
997*/
998
378cc40b 999void
7506f9c3 1000Perl_fbm_compile(pTHX_ SV *sv, U32 flags)
378cc40b 1001{
942e002e
GS		 1002 register U8 *s;
1003 register U8 *table;
79072805 1004 register U32 i;
0b71040e 1005 STRLEN len;
79072805
LW		 1006 I32 rarest = 0;
1007 U32 frequency = 256;
1008
cf93c79d
IZ		 1009 if (flags & FBMcf_TAIL)
1010 sv_catpvn(sv, "\n", 1); /* Taken into account in fbm_instr() */
942e002e 1011 s = (U8*)SvPV_force(sv, len);
07f14f54 1012 (void)SvUPGRADE(sv, SVt_PVBM);
cf93c79d
IZ		 1013 if (len == 0) /* TAIL might be on on a zero-length string. */
1014 return;
02128f11 1015 if (len > 2) {
7506f9c3 1016 U8 mlen;
cf93c79d
IZ		 1017 unsigned char *sb;
1018
7506f9c3 1019 if (len > 255)
cf93c79d 1020 mlen = 255;
7506f9c3
GS		 1021 else
1022 mlen = (U8)len;
1023 Sv_Grow(sv, len + 256 + FBM_TABLE_OFFSET);
cf93c79d 1024 table = (unsigned char*)(SvPVX(sv) + len + FBM_TABLE_OFFSET);
7506f9c3
GS		 1025 s = table - 1 - FBM_TABLE_OFFSET; /* last char */
1026 memset((void*)table, mlen, 256);
1027 table[-1] = (U8)flags;
02128f11 1028 i = 0;
7506f9c3 1029 sb = s - mlen + 1; /* first char (maybe) */
cf93c79d
IZ		 1030 while (s >= sb) {
1031 if (table[*s] == mlen)
7506f9c3 1032 table[*s] = (U8)i;
cf93c79d
IZ		 1033 s--, i++;
1034 }
378cc40b 1035 }
bbce6d69 1036 sv_magic(sv, Nullsv, 'B', Nullch, 0); /* deep magic */
79072805 1037 SvVALID_on(sv);
378cc40b 1038
463ee0b2 1039 s = (unsigned char*)(SvPVX(sv)); /* deeper magic */
bbce6d69 1040 for (i = 0; i < len; i++) {
22c35a8c 1041 if (PL_freq[s[i]] < frequency) {
bbce6d69 1042 rarest = i;
22c35a8c 1043 frequency = PL_freq[s[i]];
378cc40b
LW		 1044 }
1045 }
79072805
LW		 1046 BmRARE(sv) = s[rarest];
1047 BmPREVIOUS(sv) = rarest;
cf93c79d
IZ		 1048 BmUSEFUL(sv) = 100; /* Initial value */
1049 if (flags & FBMcf_TAIL)
1050 SvTAIL_on(sv);
7506f9c3
GS		 1051 DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %d\n",
1052 BmRARE(sv),BmPREVIOUS(sv)));
378cc40b
LW		 1053}
1054
cf93c79d
IZ		 1055/* If SvTAIL(littlestr), it has a fake '\n' at end. */
1056/* If SvTAIL is actually due to \Z or \z, this gives false positives
1057 if multiline */
1058
954c1994
GS		 1059/*
1060=for apidoc fbm_instr
1061
1062Returns the location of the SV in the string delimited by C<str> and
1063C<strend>. It returns C<Nullch> if the string can't be found. The C<sv>
1064does not have to be fbm_compiled, but the search will not be as fast
1065then.
1066
1067=cut
1068*/
1069
378cc40b 1070char *
864dbfa3 1071Perl_fbm_instr(pTHX_ unsigned char *big, register unsigned char *bigend, SV *littlestr, U32 flags)
378cc40b 1072{
a687059c 1073 register unsigned char *s;
cf93c79d
IZ		 1074 STRLEN l;
1075 register unsigned char *little = (unsigned char *)SvPV(littlestr,l);
1076 register STRLEN littlelen = l;
1077 register I32 multiline = flags & FBMrf_MULTILINE;
1078
1079 if (bigend - big < littlelen) {
a1d180c4 1080 if ( SvTAIL(littlestr)
cf93c79d 1081 && (bigend - big == littlelen - 1)
a1d180c4 1082 && (littlelen == 1
12ae5dfc
JH		 1083 || (*big == *little &&
1084 memEQ((char *)big, (char *)little, littlelen - 1))))
cf93c79d
IZ		 1085 return (char*)big;
1086 return Nullch;
1087 }
378cc40b 1088
cf93c79d 1089 if (littlelen <= 2) { /* Special-cased */
cf93c79d
IZ		 1090
1091 if (littlelen == 1) {
1092 if (SvTAIL(littlestr) && !multiline) { /* Anchor only! */
1093 /* Know that bigend != big. */
1094 if (bigend[-1] == '\n')
1095 return (char *)(bigend - 1);
1096 return (char *) bigend;
1097 }
1098 s = big;
1099 while (s < bigend) {
1100 if (*s == *little)
1101 return (char *)s;
1102 s++;
1103 }
1104 if (SvTAIL(littlestr))
1105 return (char *) bigend;
1106 return Nullch;
1107 }
1108 if (!littlelen)
1109 return (char*)big; /* Cannot be SvTAIL! */
1110
1111 /* littlelen is 2 */
1112 if (SvTAIL(littlestr) && !multiline) {
1113 if (bigend[-1] == '\n' && bigend[-2] == *little)
1114 return (char*)bigend - 2;
1115 if (bigend[-1] == *little)
1116 return (char*)bigend - 1;
1117 return Nullch;
1118 }
1119 {
1120 /* This should be better than FBM if c1 == c2, and almost
1121 as good otherwise: maybe better since we do less indirection.
1122 And we save a lot of memory by caching no table. */
1123 register unsigned char c1 = little[0];
1124 register unsigned char c2 = little[1];
1125
1126 s = big + 1;
1127 bigend--;
1128 if (c1 != c2) {
1129 while (s <= bigend) {
1130 if (s[0] == c2) {
1131 if (s[-1] == c1)
1132 return (char*)s - 1;
1133 s += 2;
1134 continue;
3fe6f2dc 1135 }
cf93c79d
IZ		 1136 next_chars:
1137 if (s[0] == c1) {
1138 if (s == bigend)
1139 goto check_1char_anchor;
1140 if (s[1] == c2)
1141 return (char*)s;
1142 else {
1143 s++;
1144 goto next_chars;
1145 }
1146 }
1147 else
1148 s += 2;
1149 }
1150 goto check_1char_anchor;
1151 }
1152 /* Now c1 == c2 */
1153 while (s <= bigend) {
1154 if (s[0] == c1) {
1155 if (s[-1] == c1)
1156 return (char*)s - 1;
1157 if (s == bigend)
1158 goto check_1char_anchor;
1159 if (s[1] == c1)
1160 return (char*)s;
1161 s += 3;
02128f11 1162 }
c277df42 1163 else
cf93c79d 1164 s += 2;
c277df42 1165 }
c277df42 1166 }
cf93c79d
IZ		 1167 check_1char_anchor: /* One char and anchor! */
1168 if (SvTAIL(littlestr) && (*bigend == *little))
1169 return (char *)bigend; /* bigend is already decremented. */
1170 return Nullch;
d48672a2 1171 }
cf93c79d 1172 if (SvTAIL(littlestr) && !multiline) { /* tail anchored? */
bbce6d69 1173 s = bigend - littlelen;
a1d180c4 1174 if (s >= big && bigend[-1] == '\n' && *s == *little
cf93c79d
IZ		 1175 /* Automatically of length > 2 */
1176 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
7506f9c3 1177 {
bbce6d69 1178 return (char*)s; /* how sweet it is */
7506f9c3
GS		 1179 }
1180 if (s[1] == *little
1181 && memEQ((char*)s + 2, (char*)little + 1, littlelen - 2))
1182 {
cf93c79d 1183 return (char*)s + 1; /* how sweet it is */
7506f9c3 1184 }
02128f11
IZ		 1185 return Nullch;
1186 }
cf93c79d
IZ		 1187 if (SvTYPE(littlestr) != SVt_PVBM || !SvVALID(littlestr)) {
1188 char *b = ninstr((char*)big,(char*)bigend,
1189 (char*)little, (char*)little + littlelen);
1190
1191 if (!b && SvTAIL(littlestr)) { /* Automatically multiline! */
1192 /* Chop \n from littlestr: */
1193 s = bigend - littlelen + 1;
7506f9c3
GS		 1194 if (*s == *little
1195 && memEQ((char*)s + 1, (char*)little + 1, littlelen - 2))
1196 {
3fe6f2dc 1197 return (char*)s;
7506f9c3 1198 }
cf93c79d 1199 return Nullch;
a687059c 1200 }
cf93c79d 1201 return b;
a687059c 1202 }
a1d180c4 1203
cf93c79d
IZ		 1204 { /* Do actual FBM. */
1205 register unsigned char *table = little + littlelen + FBM_TABLE_OFFSET;
1206 register unsigned char *oldlittle;
1207
1208 if (littlelen > bigend - big)
1209 return Nullch;
1210 --littlelen; /* Last char found by table lookup */
1211
1212 s = big + littlelen;
1213 little += littlelen; /* last char */
1214 oldlittle = little;
1215 if (s < bigend) {
1216 register I32 tmp;
1217
1218 top2:
1219 /*SUPPRESS 560*/
7506f9c3 1220 if ((tmp = table[*s])) {
62b28dd9 1221#ifdef POINTERRIGOR
cf93c79d
IZ		 1222 if (bigend - s > tmp) {
1223 s += tmp;
1224 goto top2;
1225 }
bbce6d69 1226 s += tmp;
62b28dd9 1227#else
cf93c79d 1228 if ((s += tmp) < bigend)
62b28dd9 1229 goto top2;
cf93c79d
IZ		 1230#endif
1231 goto check_end;
1232 }
1233 else { /* less expensive than calling strncmp() */
1234 register unsigned char *olds = s;
1235
1236 tmp = littlelen;
1237
1238 while (tmp--) {
1239 if (*--s == *--little)
1240 continue;
cf93c79d
IZ		 1241 s = olds + 1; /* here we pay the price for failure */
1242 little = oldlittle;
1243 if (s < bigend) /* fake up continue to outer loop */
1244 goto top2;
1245 goto check_end;
1246 }
1247 return (char *)s;
a687059c 1248 }
378cc40b 1249 }
cf93c79d
IZ		 1250 check_end:
1251 if ( s == bigend && (table[-1] & FBMcf_TAIL)
12ae5dfc
JH		 1252 && memEQ((char *)(bigend - littlelen),
1253 (char *)(oldlittle - littlelen), littlelen) )
cf93c79d
IZ		 1254 return (char*)bigend - littlelen;
1255 return Nullch;
378cc40b 1256 }
378cc40b
LW		 1257}
1258
c277df42
IZ		 1259/* start_shift, end_shift are positive quantities which give offsets
1260 of ends of some substring of bigstr.
1261 If `last' we want the last occurence.
1262 old_posp is the way of communication between consequent calls if
a1d180c4 1263 the next call needs to find the .
c277df42 1264 The initial *old_posp should be -1.
cf93c79d
IZ		 1265
1266 Note that we take into account SvTAIL, so one can get extra
1267 optimizations if _ALL flag is set.
c277df42
IZ		 1268 */
1269
cf93c79d
IZ		 1270/* If SvTAIL is actually due to \Z or \z, this gives false positives
1271 if PL_multiline. In fact if !PL_multiline the autoritative answer
1272 is not supported yet. */
1273
378cc40b 1274char *
864dbfa3 1275Perl_screaminstr(pTHX_ SV *bigstr, SV *littlestr, I32 start_shift, I32 end_shift, I32 *old_posp, I32 last)
378cc40b 1276{
a687059c
LW		 1277 register unsigned char *s, *x;
1278 register unsigned char *big;
79072805
LW		 1279 register I32 pos;
1280 register I32 previous;
1281 register I32 first;
a687059c 1282 register unsigned char *little;
c277df42 1283 register I32 stop_pos;
a687059c 1284 register unsigned char *littleend;
c277df42 1285 I32 found = 0;
378cc40b 1286
c277df42 1287 if (*old_posp == -1
3280af22 1288 ? (pos = PL_screamfirst[BmRARE(littlestr)]) < 0
cf93c79d
IZ		 1289 : (((pos = *old_posp), pos += PL_screamnext[pos]) == 0)) {
1290 cant_find:
a1d180c4 1291 if ( BmRARE(littlestr) == '\n'
cf93c79d
IZ		 1292 && BmPREVIOUS(littlestr) == SvCUR(littlestr) - 1) {
1293 little = (unsigned char *)(SvPVX(littlestr));
1294 littleend = little + SvCUR(littlestr);
1295 first = *little++;
1296 goto check_tail;
1297 }
378cc40b 1298 return Nullch;
cf93c79d
IZ		 1299 }
1300
463ee0b2 1301 little = (unsigned char *)(SvPVX(littlestr));
79072805 1302 littleend = little + SvCUR(littlestr);
378cc40b 1303 first = *little++;
c277df42 1304 /* The value of pos we can start at: */
79072805 1305 previous = BmPREVIOUS(littlestr);
463ee0b2 1306 big = (unsigned char *)(SvPVX(bigstr));
c277df42
IZ		 1307 /* The value of pos we can stop at: */
1308 stop_pos = SvCUR(bigstr) - end_shift - (SvCUR(littlestr) - 1 - previous);
cf93c79d
IZ		 1309 if (previous + start_shift > stop_pos) {
1310 if (previous + start_shift == stop_pos + 1) /* A fake '\n'? */
1311 goto check_tail;
1312 return Nullch;
1313 }
c277df42 1314 while (pos < previous + start_shift) {
3280af22 1315 if (!(pos += PL_screamnext[pos]))
cf93c79d 1316 goto cant_find;
378cc40b 1317 }
de3bb511 1318#ifdef POINTERRIGOR
bbce6d69 1319 do {
ef64f398 1320 if (pos >= stop_pos) break;
bbce6d69 1321 if (big[pos-previous] != first)
1322 continue;
1323 for (x=big+pos+1-previous,s=little; s < littleend; /**/ ) {
bbce6d69 1324 if (*s++ != *x++) {
1325 s--;
1326 break;
de3bb511 1327 }
bbce6d69 1328 }
c277df42
IZ		 1329 if (s == littleend) {
1330 *old_posp = pos;
1331 if (!last) return (char *)(big+pos-previous);
1332 found = 1;
1333 }
6b88bc9c 1334 } while ( pos += PL_screamnext[pos] );
c277df42 1335 return (last && found) ? (char *)(big+(*old_posp)-previous) : Nullch;
de3bb511
LW		 1336#else /* !POINTERRIGOR */
1337 big -= previous;
bbce6d69 1338 do {
ef64f398 1339 if (pos >= stop_pos) break;
bbce6d69 1340 if (big[pos] != first)
1341 continue;
1342 for (x=big+pos+1,s=little; s < littleend; /**/ ) {
bbce6d69 1343 if (*s++ != *x++) {
1344 s--;
1345 break;
378cc40b 1346 }
bbce6d69 1347 }
c277df42
IZ		 1348 if (s == littleend) {
1349 *old_posp = pos;
1350 if (!last) return (char *)(big+pos);
1351 found = 1;
1352 }
3280af22 1353 } while ( pos += PL_screamnext[pos] );
a1d180c4 1354 if (last && found)
cf93c79d 1355 return (char *)(big+(*old_posp));
de3bb511 1356#endif /* POINTERRIGOR */
cf93c79d
IZ		 1357 check_tail:
1358 if (!SvTAIL(littlestr) || (end_shift > 0))
1359 return Nullch;
1360 /* Ignore the trailing "\n". This code is not microoptimized */
1361 big = (unsigned char *)(SvPVX(bigstr) + SvCUR(bigstr));
1362 stop_pos = littleend - little; /* Actual littlestr len */
1363 if (stop_pos == 0)
1364 return (char*)big;
1365 big -= stop_pos;
1366 if (*big == first
12ae5dfc
JH		 1367 && ((stop_pos == 1) ||
1368 memEQ((char *)(big + 1), (char *)little, stop_pos - 1)))
cf93c79d
IZ		 1369 return (char*)big;
1370 return Nullch;
8d063cd8
LW		 1371}
1372
79072805 1373I32
864dbfa3 1374Perl_ibcmp(pTHX_ const char *s1, const char *s2, register I32 len)
79072805 1375{
bbce6d69 1376 register U8 *a = (U8 *)s1;
1377 register U8 *b = (U8 *)s2;
79072805 1378 while (len--) {
22c35a8c 1379 if (*a != *b && *a != PL_fold[*b])
bbce6d69 1380 return 1;
1381 a++,b++;
1382 }
1383 return 0;
1384}
1385
1386I32
864dbfa3 1387Perl_ibcmp_locale(pTHX_ const char *s1, const char *s2, register I32 len)
bbce6d69 1388{
1389 register U8 *a = (U8 *)s1;
1390 register U8 *b = (U8 *)s2;
1391 while (len--) {
22c35a8c 1392 if (*a != *b && *a != PL_fold_locale[*b])
bbce6d69 1393 return 1;
1394 a++,b++;
79072805
LW		 1395 }
1396 return 0;
1397}
1398
8d063cd8
LW		 1399/* copy a string to a safe spot */
1400
954c1994
GS		 1401/*
1402=for apidoc savepv
1403
1404Copy a string to a safe spot. This does not use an SV.
1405
1406=cut
1407*/
1408
8d063cd8 1409char *
864dbfa3 1410Perl_savepv(pTHX_ const char *sv)
8d063cd8 1411{
a687059c 1412 register char *newaddr;
8d063cd8 1413
79072805
LW		 1414 New(902,newaddr,strlen(sv)+1,char);
1415 (void)strcpy(newaddr,sv);
8d063cd8
LW		 1416 return newaddr;
1417}
1418
a687059c
LW		 1419/* same thing but with a known length */
1420
954c1994
GS		 1421/*
1422=for apidoc savepvn
1423
1424Copy a string to a safe spot. The C<len> indicates number of bytes to
1425copy. This does not use an SV.
1426
1427=cut
1428*/
1429
a687059c 1430char *
864dbfa3 1431Perl_savepvn(pTHX_ const char *sv, register I32 len)
a687059c
LW		 1432{
1433 register char *newaddr;
1434
1435 New(903,newaddr,len+1,char);
79072805 1436 Copy(sv,newaddr,len,char); /* might not be null terminated */
a687059c
LW		 1437 newaddr[len] = '\0'; /* is now */
1438 return newaddr;
1439}
1440
cea2e8a9 1441/* the SV for Perl_form() and mess() is not kept in an arena */
fc36a67e 1442
76e3520e 1443STATIC SV *
cea2e8a9 1444S_mess_alloc(pTHX)
fc36a67e 1445{
1446 SV *sv;
1447 XPVMG *any;
1448
e72dc28c
GS		 1449 if (!PL_dirty)
1450 return sv_2mortal(newSVpvn("",0));
1451
0372dbb6
GS		 1452 if (PL_mess_sv)
1453 return PL_mess_sv;
1454
fc36a67e 1455 /* Create as PVMG now, to avoid any upgrading later */
1456 New(905, sv, 1, SV);
1457 Newz(905, any, 1, XPVMG);
1458 SvFLAGS(sv) = SVt_PVMG;
1459 SvANY(sv) = (void*)any;
1460 SvREFCNT(sv) = 1 << 30; /* practically infinite */
e72dc28c 1461 PL_mess_sv = sv;
fc36a67e 1462 return sv;
1463}
1464
c5be433b 1465#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1466char *
1467Perl_form_nocontext(const char* pat, ...)
1468{
1469 dTHX;
c5be433b 1470 char *retval;
cea2e8a9
GS		 1471 va_list args;
1472 va_start(args, pat);
c5be433b 1473 retval = vform(pat, &args);
cea2e8a9 1474 va_end(args);
c5be433b 1475 return retval;
cea2e8a9 1476}
c5be433b 1477#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9 1478
8990e307 1479char *
864dbfa3 1480Perl_form(pTHX_ const char* pat, ...)
8990e307 1481{
c5be433b 1482 char *retval;
46fc3d4c 1483 va_list args;
46fc3d4c 1484 va_start(args, pat);
c5be433b 1485 retval = vform(pat, &args);
46fc3d4c 1486 va_end(args);
c5be433b
GS		 1487 return retval;
1488}
1489
1490char *
1491Perl_vform(pTHX_ const char *pat, va_list *args)
1492{
1493 SV *sv = mess_alloc();
1494 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
e72dc28c 1495 return SvPVX(sv);
46fc3d4c 1496}
a687059c 1497
5a844595
GS		 1498#if defined(PERL_IMPLICIT_CONTEXT)
1499SV *
1500Perl_mess_nocontext(const char *pat, ...)
1501{
1502 dTHX;
1503 SV *retval;
1504 va_list args;
1505 va_start(args, pat);
1506 retval = vmess(pat, &args);
1507 va_end(args);
1508 return retval;
1509}
1510#endif /* PERL_IMPLICIT_CONTEXT */
1511
06bf62c7 1512SV *
5a844595
GS		 1513Perl_mess(pTHX_ const char *pat, ...)
1514{
1515 SV *retval;
1516 va_list args;
1517 va_start(args, pat);
1518 retval = vmess(pat, &args);
1519 va_end(args);
1520 return retval;
1521}
1522
1523SV *
1524Perl_vmess(pTHX_ const char *pat, va_list *args)
46fc3d4c 1525{
e72dc28c 1526 SV *sv = mess_alloc();
46fc3d4c 1527 static char dgd[] = " during global destruction.\n";
1528
fc36a67e 1529 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
46fc3d4c 1530 if (!SvCUR(sv) || *(SvEND(sv) - 1) != '\n') {
57843af0 1531 if (CopLINE(PL_curcop))
ed094faf
GS		 1532 Perl_sv_catpvf(aTHX_ sv, " at %s line %"IVdf,
1533 CopFILE(PL_curcop), (IV)CopLINE(PL_curcop));
515f54a1
GS		 1534 if (GvIO(PL_last_in_gv) && IoLINES(GvIOp(PL_last_in_gv))) {
1535 bool line_mode = (RsSIMPLE(PL_rs) &&
7c1e0849 1536 SvCUR(PL_rs) == 1 && *SvPVX(PL_rs) == '\n');
57def98f 1537 Perl_sv_catpvf(aTHX_ sv, ", <%s> %s %"IVdf,
cf2093f6 1538 PL_last_in_gv == PL_argvgv ? "" : GvNAME(PL_last_in_gv),
a1d180c4 1539 line_mode ? "line" : "chunk",
cf2093f6 1540 (IV)IoLINES(GvIOp(PL_last_in_gv)));
a687059c 1541 }
9efbc0eb 1542#ifdef USE_THREADS
e8e6f333
GS		 1543 if (thr->tid)
1544 Perl_sv_catpvf(aTHX_ sv, " thread %ld", thr->tid);
9efbc0eb 1545#endif
515f54a1 1546 sv_catpv(sv, PL_dirty ? dgd : ".\n");
a687059c 1547 }
06bf62c7 1548 return sv;
a687059c
LW		 1549}
1550
c5be433b
GS		 1551OP *
1552Perl_vdie(pTHX_ const char* pat, va_list *args)
36477c24 1553{
36477c24 1554 char *message;
3280af22 1555 int was_in_eval = PL_in_eval;
36477c24 1556 HV *stash;
1557 GV *gv;
1558 CV *cv;
06bf62c7
GS		 1559 SV *msv;
1560 STRLEN msglen;
36477c24 1561
bf49b057 1562 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1563 "%p: die: curstack = %p, mainstack = %p\n",
533c011a 1564 thr, PL_curstack, PL_mainstack));
36477c24 1565
06bf62c7 1566 if (pat) {
5a844595
GS		 1567 msv = vmess(pat, args);
1568 if (PL_errors && SvCUR(PL_errors)) {
1569 sv_catsv(PL_errors, msv);
1570 message = SvPV(PL_errors, msglen);
1571 SvCUR_set(PL_errors, 0);
1572 }
1573 else
1574 message = SvPV(msv,msglen);
06bf62c7
GS		 1575 }
1576 else {
1577 message = Nullch;
0f79a09d 1578 msglen = 0;
06bf62c7 1579 }
36477c24 1580
bf49b057 1581 DEBUG_S(PerlIO_printf(Perl_debug_log,
199100c8 1582 "%p: die: message = %s\ndiehook = %p\n",
533c011a 1583 thr, message, PL_diehook));
3280af22 1584 if (PL_diehook) {
cea2e8a9 1585 /* sv_2cv might call Perl_croak() */
3280af22 1586 SV *olddiehook = PL_diehook;
1738f5c4 1587 ENTER;
3280af22
NIS		 1588 SAVESPTR(PL_diehook);
1589 PL_diehook = Nullsv;
1738f5c4
CS		 1590 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1591 LEAVE;
1592 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1593 dSP;
774d564b 1594 SV *msg;
1595
1596 ENTER;
3a1f2dc9 1597 save_re_context();
79cb57f6 1598 if (message) {
06bf62c7 1599 msg = newSVpvn(message, msglen);
4e6ea2c3
GS		 1600 SvREADONLY_on(msg);
1601 SAVEFREESV(msg);
1602 }
1603 else {
1604 msg = ERRSV;
1605 }
1738f5c4 1606
e788e7d3 1607 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1608 PUSHMARK(SP);
1738f5c4
CS		 1609 XPUSHs(msg);
1610 PUTBACK;
0cdb2077 1611 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1612 POPSTACK;
774d564b 1613 LEAVE;
1738f5c4 1614 }
36477c24 1615 }
1616
06bf62c7 1617 PL_restartop = die_where(message, msglen);
bf49b057 1618 DEBUG_S(PerlIO_printf(Perl_debug_log,
7c06b590 1619 "%p: die: restartop = %p, was_in_eval = %d, top_env = %p\n",
533c011a 1620 thr, PL_restartop, was_in_eval, PL_top_env));
3280af22 1621 if ((!PL_restartop && was_in_eval) || PL_top_env->je_prev)
6224f72b 1622 JMPENV_JUMP(3);
3280af22 1623 return PL_restartop;
36477c24 1624}
1625
c5be433b 1626#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1627OP *
1628Perl_die_nocontext(const char* pat, ...)
a687059c 1629{
cea2e8a9
GS		 1630 dTHX;
1631 OP *o;
a687059c 1632 va_list args;
cea2e8a9 1633 va_start(args, pat);
c5be433b 1634 o = vdie(pat, &args);
cea2e8a9
GS		 1635 va_end(args);
1636 return o;
1637}
c5be433b 1638#endif /* PERL_IMPLICIT_CONTEXT */
cea2e8a9
GS		 1639
1640OP *
1641Perl_die(pTHX_ const char* pat, ...)
1642{
1643 OP *o;
1644 va_list args;
1645 va_start(args, pat);
c5be433b 1646 o = vdie(pat, &args);
cea2e8a9
GS		 1647 va_end(args);
1648 return o;
1649}
1650
c5be433b
GS		 1651void
1652Perl_vcroak(pTHX_ const char* pat, va_list *args)
cea2e8a9 1653{
de3bb511 1654 char *message;
748a9306
LW		 1655 HV *stash;
1656 GV *gv;
1657 CV *cv;
06bf62c7
GS		 1658 SV *msv;
1659 STRLEN msglen;
a687059c 1660
9983fa3c
GS		 1661 if (pat) {
1662 msv = vmess(pat, args);
1663 if (PL_errors && SvCUR(PL_errors)) {
1664 sv_catsv(PL_errors, msv);
1665 message = SvPV(PL_errors, msglen);
1666 SvCUR_set(PL_errors, 0);
1667 }
1668 else
1669 message = SvPV(msv,msglen);
1670 }
1671 else {
1672 message = Nullch;
1673 msglen = 0;
5a844595 1674 }
5a844595 1675
b900a521
JH		 1676 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s",
1677 PTR2UV(thr), message));
5a844595 1678
3280af22 1679 if (PL_diehook) {
cea2e8a9 1680 /* sv_2cv might call Perl_croak() */
3280af22 1681 SV *olddiehook = PL_diehook;
1738f5c4 1682 ENTER;
3280af22
NIS		 1683 SAVESPTR(PL_diehook);
1684 PL_diehook = Nullsv;
20cec16a 1685 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1738f5c4
CS		 1686 LEAVE;
1687 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1688 dSP;
774d564b 1689 SV *msg;
1690
1691 ENTER;
3a1f2dc9 1692 save_re_context();
9983fa3c
GS		 1693 if (message) {
1694 msg = newSVpvn(message, msglen);
1695 SvREADONLY_on(msg);
1696 SAVEFREESV(msg);
1697 }
1698 else {
1699 msg = ERRSV;
1700 }
20cec16a 1701
e788e7d3 1702 PUSHSTACKi(PERLSI_DIEHOOK);
924508f0 1703 PUSHMARK(SP);
1738f5c4 1704 XPUSHs(msg);
20cec16a 1705 PUTBACK;
864dbfa3 1706 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1707 POPSTACK;
774d564b 1708 LEAVE;
20cec16a 1709 }
748a9306 1710 }
3280af22 1711 if (PL_in_eval) {
06bf62c7 1712 PL_restartop = die_where(message, msglen);
6224f72b 1713 JMPENV_JUMP(3);
a0d0e21e 1714 }
d175a3f0
GS		 1715 {
1716#ifdef USE_SFIO
1717 /* SFIO can really mess with your errno */
1718 int e = errno;
1719#endif
bf49b057
GS		 1720 PerlIO *serr = Perl_error_log;
1721
1722 PerlIO_write(serr, message, msglen);
1723 (void)PerlIO_flush(serr);
d175a3f0
GS		 1724#ifdef USE_SFIO
1725 errno = e;
1726#endif
1727 }
f86702cc 1728 my_failure_exit();
a687059c
LW		 1729}
1730
c5be433b 1731#if defined(PERL_IMPLICIT_CONTEXT)
8990e307 1732void
cea2e8a9 1733Perl_croak_nocontext(const char *pat, ...)
a687059c 1734{
cea2e8a9 1735 dTHX;
a687059c 1736 va_list args;
cea2e8a9 1737 va_start(args, pat);
c5be433b 1738 vcroak(pat, &args);
cea2e8a9
GS		 1739 /* NOTREACHED */
1740 va_end(args);
1741}
1742#endif /* PERL_IMPLICIT_CONTEXT */
1743
954c1994
GS		 1744/*
1745=for apidoc croak
1746
9983fa3c
GS		 1747This is the XSUB-writer's interface to Perl's C<die> function.
1748Normally use this function the same way you use the C C<printf>
1749function. See C<warn>.
1750
1751If you want to throw an exception object, assign the object to
1752C<$@> and then pass C<Nullch> to croak():
1753
1754 errsv = get_sv("@", TRUE);
1755 sv_setsv(errsv, exception_object);
1756 croak(Nullch);
954c1994
GS		 1757
1758=cut
1759*/
1760
cea2e8a9
GS		 1761void
1762Perl_croak(pTHX_ const char *pat, ...)
1763{
1764 va_list args;
1765 va_start(args, pat);
c5be433b 1766 vcroak(pat, &args);
cea2e8a9
GS		 1767 /* NOTREACHED */
1768 va_end(args);
1769}
1770
c5be433b
GS		 1771void
1772Perl_vwarn(pTHX_ const char* pat, va_list *args)
cea2e8a9 1773{
de3bb511 1774 char *message;
748a9306
LW		 1775 HV *stash;
1776 GV *gv;
1777 CV *cv;
06bf62c7
GS		 1778 SV *msv;
1779 STRLEN msglen;
a687059c 1780
5a844595 1781 msv = vmess(pat, args);
06bf62c7 1782 message = SvPV(msv, msglen);
a687059c 1783
3280af22 1784 if (PL_warnhook) {
cea2e8a9 1785 /* sv_2cv might call Perl_warn() */
3280af22 1786 SV *oldwarnhook = PL_warnhook;
1738f5c4 1787 ENTER;
3280af22
NIS		 1788 SAVESPTR(PL_warnhook);
1789 PL_warnhook = Nullsv;
20cec16a 1790 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
1738f5c4
CS		 1791 LEAVE;
1792 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
20cec16a 1793 dSP;
774d564b 1794 SV *msg;
1795
1796 ENTER;
3a1f2dc9 1797 save_re_context();
06bf62c7 1798 msg = newSVpvn(message, msglen);
774d564b 1799 SvREADONLY_on(msg);
1800 SAVEFREESV(msg);
1801
e788e7d3 1802 PUSHSTACKi(PERLSI_WARNHOOK);
924508f0 1803 PUSHMARK(SP);
774d564b 1804 XPUSHs(msg);
20cec16a 1805 PUTBACK;
864dbfa3 1806 call_sv((SV*)cv, G_DISCARD);
d3acc0f7 1807 POPSTACK;
774d564b 1808 LEAVE;
20cec16a 1809 return;
1810 }
748a9306 1811 }
bf49b057
GS		 1812 {
1813 PerlIO *serr = Perl_error_log;
1814
1815 PerlIO_write(serr, message, msglen);
a687059c 1816#ifdef LEAKTEST
a1d180c4 1817 DEBUG_L(*message == '!'
bf49b057
GS		 1818 ? (xstat(message[1]=='!'
1819 ? (message[2]=='!' ? 2 : 1)
1820 : 0)
1821 , 0)
1822 : 0);
a687059c 1823#endif
bf49b057
GS		 1824 (void)PerlIO_flush(serr);
1825 }
a687059c 1826}
8d063cd8 1827
c5be433b 1828#if defined(PERL_IMPLICIT_CONTEXT)
cea2e8a9
GS		 1829void
1830Perl_warn_nocontext(const char *pat, ...)
1831{
1832 dTHX;
1833 va_list args;
1834 va_start(args, pat);
c5be433b 1835 vwarn(pat, &args);
cea2e8a9
GS		 1836 va_end(args);
1837}
1838#endif /* PERL_IMPLICIT_CONTEXT */
1839
954c1994
GS		 1840/*
1841=for apidoc warn
1842
1843This is the XSUB-writer's interface to Perl's C<warn> function. Use this
1844function the same way you use the C C<printf> function. See
1845C<croak>.
1846
1847=cut
1848*/
1849
cea2e8a9
GS		 1850void
1851Perl_warn(pTHX_ const char *pat, ...)
1852{
1853 va_list args;
1854 va_start(args, pat);
c5be433b 1855 vwarn(pat, &args);
cea2e8a9
GS		 1856 va_end(args);
1857}
1858
c5be433b
GS		 1859#if defined(PERL_IMPLICIT_CONTEXT)
1860void
1861Perl_warner_nocontext(U32 err, const char *pat, ...)
1862{
1863 dTHX;
1864 va_list args;
1865 va_start(args, pat);
1866 vwarner(err, pat, &args);
1867 va_end(args);
1868}
1869#endif /* PERL_IMPLICIT_CONTEXT */
1870
599cee73 1871void
864dbfa3 1872Perl_warner(pTHX_ U32 err, const char* pat,...)
599cee73
PM		 1873{
1874 va_list args;
c5be433b
GS		 1875 va_start(args, pat);
1876 vwarner(err, pat, &args);
1877 va_end(args);
1878}
1879
1880void
1881Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
1882{
599cee73
PM		 1883 char *message;
1884 HV *stash;
1885 GV *gv;
1886 CV *cv;
06bf62c7
GS		 1887 SV *msv;
1888 STRLEN msglen;
599cee73 1889
5a844595 1890 msv = vmess(pat, args);
06bf62c7 1891 message = SvPV(msv, msglen);
599cee73
PM		 1892
1893 if (ckDEAD(err)) {
1894#ifdef USE_THREADS
b900a521 1895 DEBUG_S(PerlIO_printf(Perl_debug_log, "croak: 0x%"UVxf" %s", PTR2UV(thr), message));
599cee73
PM		 1896#endif /* USE_THREADS */
1897 if (PL_diehook) {
cea2e8a9 1898 /* sv_2cv might call Perl_croak() */
599cee73
PM		 1899 SV *olddiehook = PL_diehook;
1900 ENTER;
1901 SAVESPTR(PL_diehook);
1902 PL_diehook = Nullsv;
1903 cv = sv_2cv(olddiehook, &stash, &gv, 0);
1904 LEAVE;
1905 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1906 dSP;
1907 SV *msg;
a1d180c4 1908
599cee73 1909 ENTER;
3a1f2dc9 1910 save_re_context();
06bf62c7 1911 msg = newSVpvn(message, msglen);
599cee73
PM		 1912 SvREADONLY_on(msg);
1913 SAVEFREESV(msg);
a1d180c4 1914
3a1f2dc9 1915 PUSHSTACKi(PERLSI_DIEHOOK);
599cee73
PM		 1916 PUSHMARK(sp);
1917 XPUSHs(msg);
1918 PUTBACK;
864dbfa3 1919 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1920 POPSTACK;
599cee73
PM		 1921 LEAVE;
1922 }
1923 }
1924 if (PL_in_eval) {
06bf62c7 1925 PL_restartop = die_where(message, msglen);
599cee73
PM		 1926 JMPENV_JUMP(3);
1927 }
bf49b057
GS		 1928 {
1929 PerlIO *serr = Perl_error_log;
1930 PerlIO_write(serr, message, msglen);
1931 (void)PerlIO_flush(serr);
1932 }
599cee73
PM		 1933 my_failure_exit();
1934
1935 }
1936 else {
1937 if (PL_warnhook) {
cea2e8a9 1938 /* sv_2cv might call Perl_warn() */
599cee73
PM		 1939 SV *oldwarnhook = PL_warnhook;
1940 ENTER;
1941 SAVESPTR(PL_warnhook);
1942 PL_warnhook = Nullsv;
1943 cv = sv_2cv(oldwarnhook, &stash, &gv, 0);
3a1f2dc9 1944 LEAVE;
599cee73
PM		 1945 if (cv && !CvDEPTH(cv) && (CvROOT(cv) || CvXSUB(cv))) {
1946 dSP;
1947 SV *msg;
a1d180c4 1948
599cee73 1949 ENTER;
3a1f2dc9 1950 save_re_context();
06bf62c7 1951 msg = newSVpvn(message, msglen);
599cee73
PM		 1952 SvREADONLY_on(msg);
1953 SAVEFREESV(msg);
a1d180c4 1954
3a1f2dc9 1955 PUSHSTACKi(PERLSI_WARNHOOK);
599cee73
PM		 1956 PUSHMARK(sp);
1957 XPUSHs(msg);
1958 PUTBACK;
864dbfa3 1959 call_sv((SV*)cv, G_DISCARD);
3a1f2dc9 1960 POPSTACK;
599cee73
PM		 1961 LEAVE;
1962 return;
1963 }
1964 }
bf49b057
GS		 1965 {
1966 PerlIO *serr = Perl_error_log;
1967 PerlIO_write(serr, message, msglen);
599cee73 1968#ifdef LEAKTEST
a1d180c4 1969 DEBUG_L(*message == '!'
06247ec9
JH		 1970 ? (xstat(message[1]=='!'
1971 ? (message[2]=='!' ? 2 : 1)
1972 : 0)
1973 , 0)
1974 : 0);
599cee73 1975#endif
bf49b057
GS		 1976 (void)PerlIO_flush(serr);
1977 }
599cee73
PM		 1978 }
1979}
1980
13b6e58c
JH		 1981#ifdef USE_ENVIRON_ARRAY
1982 /* VMS' and EPOC's my_setenv() is in vms.c and epoc.c */
47dafe4d 1983#if !defined(WIN32)
8d063cd8 1984void
864dbfa3 1985Perl_my_setenv(pTHX_ char *nam, char *val)
8d063cd8 1986{
f2517201
GS		 1987#ifndef PERL_USE_SAFE_PUTENV
1988 /* most putenv()s leak, so we manipulate environ directly */
79072805 1989 register I32 i=setenv_getix(nam); /* where does it go? */
8d063cd8 1990
3280af22 1991 if (environ == PL_origenviron) { /* need we copy environment? */
79072805
LW		 1992 I32 j;
1993 I32 max;
fe14fcc3
LW		 1994 char **tmpenv;
1995
de3bb511 1996 /*SUPPRESS 530*/
fe14fcc3 1997 for (max = i; environ[max]; max++) ;
f2517201
GS		 1998 tmpenv = (char**)safesysmalloc((max+2) * sizeof(char*));
1999 for (j=0; j<max; j++) { /* copy environment */
2000 tmpenv[j] = (char*)safesysmalloc((strlen(environ[j])+1)*sizeof(char));
2001 strcpy(tmpenv[j], environ[j]);
2002 }
fe14fcc3
LW		 2003 tmpenv[max] = Nullch;
2004 environ = tmpenv; /* tell exec where it is now */
2005 }
a687059c 2006 if (!val) {
f2517201 2007 safesysfree(environ[i]);
a687059c
LW		 2008 while (environ[i]) {
2009 environ[i] = environ[i+1];
2010 i++;
2011 }
2012 return;
2013 }
8d063cd8 2014 if (!environ[i]) { /* does not exist yet */
f2517201 2015 environ = (char**)safesysrealloc(environ, (i+2) * sizeof(char*));
8d063cd8
LW		 2016 environ[i+1] = Nullch; /* make sure it's null terminated */
2017 }
fe14fcc3 2018 else
f2517201
GS		 2019 safesysfree(environ[i]);
2020 environ[i] = (char*)safesysmalloc((strlen(nam)+strlen(val)+2) * sizeof(char));
2021
a687059c 2022 (void)sprintf(environ[i],"%s=%s",nam,val);/* all that work just for this */
f2517201
GS		 2023
2024#else /* PERL_USE_SAFE_PUTENV */
47dafe4d
EF		 2025# if defined(__CYGWIN__)
2026 setenv(nam, val, 1);
2027# else
f2517201
GS		 2028 char *new_env;
2029
2030 new_env = (char*)safesysmalloc((strlen(nam) + strlen(val) + 2) * sizeof(char));
f2517201 2031 (void)sprintf(new_env,"%s=%s",nam,val);/* all that work just for this */
f2517201 2032 (void)putenv(new_env);
47dafe4d 2033# endif /* __CYGWIN__ */
f2517201 2034#endif /* PERL_USE_SAFE_PUTENV */
8d063cd8
LW		 2035}
2036
47dafe4d 2037#else /* WIN32 */
68dc0745 2038
2039void
864dbfa3 2040Perl_my_setenv(pTHX_ char *nam,char *val)
68dc0745 2041{
ac5c734f
GS		 2042 register char *envstr;
2043 STRLEN len = strlen(nam) + 3;
2044 if (!val) {
2045 val = "";
2046 }
2047 len += strlen(val);
2048 New(904, envstr, len, char);
2049 (void)sprintf(envstr,"%s=%s",nam,val);
2050 (void)PerlEnv_putenv(envstr);
2051 Safefree(envstr);
3e3baf6d
TB		 2052}
2053
2054#endif /* WIN32 */
2055
2056I32
864dbfa3 2057Perl_setenv_getix(pTHX_ char *nam)
3e3baf6d
TB		 2058{
2059 register I32 i, len = strlen(nam);
2060
2061 for (i = 0; environ[i]; i++) {
2062 if (
2063#ifdef WIN32
2064 strnicmp(environ[i],nam,len) == 0
2065#else
2066 strnEQ(environ[i],nam,len)
2067#endif
2068 && environ[i][len] == '=')
2069 break; /* strnEQ must come first to avoid */
2070 } /* potential SEGV's */
2071 return i;
68dc0745 2072}
2073
ed79a026 2074#endif /* !VMS && !EPOC*/
378cc40b 2075
16d20bd9 2076#ifdef UNLINK_ALL_VERSIONS
79072805 2077I32
864dbfa3 2078Perl_unlnk(pTHX_ char *f) /* unlink all versions of a file */
378cc40b 2079{
79072805 2080 I32 i;
378cc40b 2081
6ad3d225 2082 for (i = 0; PerlLIO_unlink(f) >= 0; i++) ;
378cc40b
LW		 2083 return i ? 0 : -1;
2084}
2085#endif
2086
7a3f2258 2087/* this is a drop-in replacement for bcopy() */
85e6fe83 2088#if !defined(HAS_BCOPY) || !defined(HAS_SAFE_BCOPY)
378cc40b 2089char *
7a3f2258 2090Perl_my_bcopy(register const char *from,register char *to,register I32 len)
378cc40b
LW		 2091{
2092 char *retval = to;
2093
7c0587c8
LW		 2094 if (from - to >= 0) {
2095 while (len--)
2096 *to++ = *from++;
2097 }
2098 else {
2099 to += len;
2100 from += len;
2101 while (len--)
faf8582f 2102 *(--to) = *(--from);
7c0587c8 2103 }
378cc40b
LW		 2104 return retval;
2105}
ffed7fef 2106#endif
378cc40b 2107
7a3f2258 2108/* this is a drop-in replacement for memset() */
fc36a67e 2109#ifndef HAS_MEMSET
2110void *
7a3f2258 2111Perl_my_memset(register char *loc, register I32 ch, register I32 len)
fc36a67e 2112{
2113 char *retval = loc;
2114
2115 while (len--)
2116 *loc++ = ch;
2117 return retval;
2118}
2119#endif
2120
7a3f2258 2121/* this is a drop-in replacement for bzero() */
7c0587c8 2122#if !defined(HAS_BZERO) && !defined(HAS_MEMSET)
378cc40b 2123char *
7a3f2258 2124Perl_my_bzero(register char *loc, register I32 len)
378cc40b
LW		 2125{
2126 char *retval = loc;
2127
2128 while (len--)
2129 *loc++ = 0;
2130 return retval;
2131}
2132#endif
7c0587c8 2133
7a3f2258 2134/* this is a drop-in replacement for memcmp() */
36477c24 2135#if !defined(HAS_MEMCMP) || !defined(HAS_SANE_MEMCMP)
79072805 2136I32
7a3f2258 2137Perl_my_memcmp(const char *s1, const char *s2, register I32 len)
7c0587c8 2138{
36477c24 2139 register U8 *a = (U8 *)s1;
2140 register U8 *b = (U8 *)s2;
79072805 2141 register I32 tmp;
7c0587c8
LW		 2142
2143 while (len--) {
36477c24 2144 if (tmp = *a++ - *b++)
7c0587c8
LW		 2145 return tmp;
2146 }
2147 return 0;
2148}
36477c24 2149#endif /* !HAS_MEMCMP || !HAS_SANE_MEMCMP */
a687059c 2150
fe14fcc3 2151#ifndef HAS_VPRINTF
a687059c 2152
85e6fe83 2153#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2154char *
2155#else
2156int
2157#endif
08105a92 2158vsprintf(char *dest, const char *pat, char *args)
a687059c
LW		 2159{
2160 FILE fakebuf;
2161
2162 fakebuf._ptr = dest;
2163 fakebuf._cnt = 32767;
35c8bce7
LW		 2164#ifndef _IOSTRG
2165#define _IOSTRG 0
2166#endif
a687059c
LW		 2167 fakebuf._flag = _IOWRT|_IOSTRG;
2168 _doprnt(pat, args, &fakebuf); /* what a kludge */
2169 (void)putc('\0', &fakebuf);
85e6fe83 2170#ifdef USE_CHAR_VSPRINTF
a687059c
LW		 2171 return(dest);
2172#else
2173 return 0; /* perl doesn't use return value */
2174#endif
2175}
2176
fe14fcc3 2177#endif /* HAS_VPRINTF */
a687059c
LW		 2178
2179#ifdef MYSWAP
ffed7fef 2180#if BYTEORDER != 0x4321
a687059c 2181short
864dbfa3 2182Perl_my_swap(pTHX_ short s)
a687059c
LW		 2183{
2184#if (BYTEORDER & 1) == 0
2185 short result;
2186
2187 result = ((s & 255) << 8) + ((s >> 8) & 255);
2188 return result;
2189#else
2190 return s;
2191#endif
2192}
2193
2194long
864dbfa3 2195Perl_my_htonl(pTHX_ long l)
a687059c
LW		 2196{
2197 union {
2198 long result;
ffed7fef 2199 char c[sizeof(long)];
a687059c
LW		 2200 } u;
2201
ffed7fef 2202#if BYTEORDER == 0x1234
a687059c
LW		 2203 u.c[0] = (l >> 24) & 255;
2204 u.c[1] = (l >> 16) & 255;
2205 u.c[2] = (l >> 8) & 255;
2206 u.c[3] = l & 255;
2207 return u.result;
2208#else
ffed7fef 2209#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2210 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2211#else
79072805
LW		 2212 register I32 o;
2213 register I32 s;
a687059c 2214
ffed7fef
LW		 2215 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2216 u.c[o & 0xf] = (l >> s) & 255;
a687059c
LW		 2217 }
2218 return u.result;
2219#endif
2220#endif
2221}
2222
2223long
864dbfa3 2224Perl_my_ntohl(pTHX_ long l)
a687059c
LW		 2225{
2226 union {
2227 long l;
ffed7fef 2228 char c[sizeof(long)];
a687059c
LW		 2229 } u;
2230
ffed7fef 2231#if BYTEORDER == 0x1234
a687059c
LW		 2232 u.c[0] = (l >> 24) & 255;
2233 u.c[1] = (l >> 16) & 255;
2234 u.c[2] = (l >> 8) & 255;
2235 u.c[3] = l & 255;
2236 return u.l;
2237#else
ffed7fef 2238#if ((BYTEORDER - 0x1111) & 0x444) || !(BYTEORDER & 0xf)
cea2e8a9 2239 Perl_croak(aTHX_ "Unknown BYTEORDER\n");
a687059c 2240#else
79072805
LW		 2241 register I32 o;
2242 register I32 s;
a687059c
LW		 2243
2244 u.l = l;
2245 l = 0;
ffed7fef
LW		 2246 for (o = BYTEORDER - 0x1111, s = 0; s < (sizeof(long)*8); o >>= 4, s += 8) {
2247 l |= (u.c[o & 0xf] & 255) << s;
a687059c
LW		 2248 }
2249 return l;
2250#endif
2251#endif
2252}
2253
ffed7fef 2254#endif /* BYTEORDER != 0x4321 */
988174c1
LW		 2255#endif /* MYSWAP */
2256
2257/*
2258 * Little-endian byte order functions - 'v' for 'VAX', or 'reVerse'.
2259 * If these functions are defined,
2260 * the BYTEORDER is neither 0x1234 nor 0x4321.
2261 * However, this is not assumed.
2262 * -DWS
2263 */
2264
2265#define HTOV(name,type) \
2266 type \
ba106d47 2267 name (register type n) \
988174c1
LW		 2268 { \
2269 union { \
2270 type value; \
2271 char c[sizeof(type)]; \
2272 } u; \
79072805
LW		 2273 register I32 i; \
2274 register I32 s; \
988174c1
LW		 2275 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2276 u.c[i] = (n >> s) & 0xFF; \
2277 } \
2278 return u.value; \
2279 }
2280
2281#define VTOH(name,type) \
2282 type \
ba106d47 2283 name (register type n) \
988174c1
LW		 2284 { \
2285 union { \
2286 type value; \
2287 char c[sizeof(type)]; \
2288 } u; \
79072805
LW		 2289 register I32 i; \
2290 register I32 s; \
988174c1
LW		 2291 u.value = n; \
2292 n = 0; \
2293 for (i = 0, s = 0; i < sizeof(u.c); i++, s += 8) { \
2294 n += (u.c[i] & 0xFF) << s; \
2295 } \
2296 return n; \
2297 }
2298
2299#if defined(HAS_HTOVS) && !defined(htovs)
2300HTOV(htovs,short)
2301#endif
2302#if defined(HAS_HTOVL) && !defined(htovl)
2303HTOV(htovl,long)
2304#endif
2305#if defined(HAS_VTOHS) && !defined(vtohs)
2306VTOH(vtohs,short)
2307#endif
2308#if defined(HAS_VTOHL) && !defined(vtohl)
2309VTOH(vtohl,long)
2310#endif
a687059c 2311
5f05dabc 2312 /* VMS' my_popen() is in VMS.c, same with OS/2. */
cd39f2b6 2313#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
760ac839 2314PerlIO *
864dbfa3 2315Perl_my_popen(pTHX_ char *cmd, char *mode)
a687059c
LW		 2316{
2317 int p[2];
8ac85365 2318 register I32 This, that;
d8a83dd3 2319 register Pid_t pid;
79072805 2320 SV *sv;
1738f5c4 2321 I32 doexec = strNE(cmd,"-");
e446cec8
IZ		 2322 I32 did_pipes = 0;
2323 int pp[2];
a687059c 2324
45bc9206 2325 PERL_FLUSHALL_FOR_CHILD;
ddcf38b7
IZ		 2326#ifdef OS2
2327 if (doexec) {
23da6c43 2328 return my_syspopen(aTHX_ cmd,mode);
ddcf38b7 2329 }
a1d180c4 2330#endif
8ac85365
NIS		 2331 This = (*mode == 'w');
2332 that = !This;
3280af22 2333 if (doexec && PL_tainting) {
bbce6d69 2334 taint_env();
2335 taint_proper("Insecure %s%s", "EXEC");
d48672a2 2336 }
c2267164
IZ		 2337 if (PerlProc_pipe(p) < 0)
2338 return Nullfp;
e446cec8
IZ		 2339 if (doexec && PerlProc_pipe(pp) >= 0)
2340 did_pipes = 1;
a687059c
LW		 2341 while ((pid = (doexec?vfork():fork())) < 0) {
2342 if (errno != EAGAIN) {
6ad3d225 2343 PerlLIO_close(p[This]);
e446cec8
IZ		 2344 if (did_pipes) {
2345 PerlLIO_close(pp[0]);
2346 PerlLIO_close(pp[1]);
2347 }
a687059c 2348 if (!doexec)
cea2e8a9 2349 Perl_croak(aTHX_ "Can't fork");
a687059c
LW		 2350 return Nullfp;
2351 }
2352 sleep(5);
2353 }
2354 if (pid == 0) {
79072805
LW		 2355 GV* tmpgv;
2356
30ac6d9b
GS		 2357#undef THIS
2358#undef THAT
a687059c 2359#define THIS that
8ac85365 2360#define THAT This
6ad3d225 2361 PerlLIO_close(p[THAT]);
e446cec8
IZ		 2362 if (did_pipes) {
2363 PerlLIO_close(pp[0]);
2364#if defined(HAS_FCNTL) && defined(F_SETFD)
2365 fcntl(pp[1], F_SETFD, FD_CLOEXEC);
2366#endif
2367 }
a687059c 2368 if (p[THIS] != (*mode == 'r')) {
6ad3d225
GS		 2369 PerlLIO_dup2(p[THIS], *mode == 'r');
2370 PerlLIO_close(p[THIS]);
a687059c 2371 }
4435c477 2372#ifndef OS2
a687059c 2373 if (doexec) {
a0d0e21e 2374#if !defined(HAS_FCNTL) || !defined(F_SETFD)
ae986130
LW		 2375 int fd;
2376
2377#ifndef NOFILE
2378#define NOFILE 20
2379#endif
6b88bc9c 2380 for (fd = PL_maxsysfd + 1; fd < NOFILE; fd++)
e446cec8
IZ		 2381 if (fd != pp[1])
2382 PerlLIO_close(fd);
ae986130 2383#endif
e446cec8 2384 do_exec3(cmd,pp[1],did_pipes); /* may or may not use the shell */
6ad3d225 2385 PerlProc__exit(1);
a687059c 2386 }
4435c477 2387#endif /* defined OS2 */
de3bb511 2388 /*SUPPRESS 560*/
155aba94 2389 if ((tmpgv = gv_fetchpv("$",TRUE, SVt_PV)))
7766f137 2390 sv_setiv(GvSV(tmpgv), PerlProc_getpid());
3280af22
NIS		 2391 PL_forkprocess = 0;
2392 hv_clear(PL_pidstatus); /* we have no children */
a687059c
LW		 2393 return Nullfp;
2394#undef THIS
2395#undef THAT
2396 }
62b28dd9 2397 do_execfree(); /* free any memory malloced by child on vfork */
6ad3d225 2398 PerlLIO_close(p[that]);
e446cec8
IZ		 2399 if (did_pipes)
2400 PerlLIO_close(pp[1]);
8ac85365 2401 if (p[that] < p[This]) {
6ad3d225
GS		 2402 PerlLIO_dup2(p[This], p[that]);
2403 PerlLIO_close(p[This]);
8ac85365 2404 p[This] = p[that];
62b28dd9 2405 }
4755096e 2406 LOCK_FDPID_MUTEX;
3280af22 2407 sv = *av_fetch(PL_fdpid,p[This],TRUE);
4755096e 2408 UNLOCK_FDPID_MUTEX;
a0d0e21e 2409 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2410 SvIVX(sv) = pid;
3280af22 2411 PL_forkprocess = pid;
e446cec8
IZ		 2412 if (did_pipes && pid > 0) {
2413 int errkid;
2414 int n = 0, n1;
2415
2416 while (n < sizeof(int)) {
2417 n1 = PerlLIO_read(pp[0],
2418 (void*)(((char*)&errkid)+n),
2419 (sizeof(int)) - n);
2420 if (n1 <= 0)
2421 break;
2422 n += n1;
2423 }
2f96c702
IZ		 2424 PerlLIO_close(pp[0]);
2425 did_pipes = 0;
e446cec8 2426 if (n) { /* Error */
faa466a7 2427 int pid2, status;
e446cec8 2428 if (n != sizeof(int))
cea2e8a9 2429 Perl_croak(aTHX_ "panic: kid popen errno read");
faa466a7
RG		 2430 do {
2431 pid2 = wait4pid(pid, &status, 0);
2432 } while (pid2 == -1 && errno == EINTR);
e446cec8
IZ		 2433 errno = errkid; /* Propagate errno from kid */
2434 return Nullfp;
2435 }
2436 }
2437 if (did_pipes)
2438 PerlLIO_close(pp[0]);
8ac85365 2439 return PerlIO_fdopen(p[This], mode);
a687059c 2440}
7c0587c8 2441#else
55497cff 2442#if defined(atarist) || defined(DJGPP)
7c0587c8 2443FILE *popen();
760ac839 2444PerlIO *
864dbfa3 2445Perl_my_popen(pTHX_ char *cmd, char *mode)
7c0587c8 2446{
45bc9206 2447 PERL_FLUSHALL_FOR_CHILD;
a1d180c4
NIS		 2448 /* Call system's popen() to get a FILE *, then import it.
2449 used 0 for 2nd parameter to PerlIO_importFILE;
2450 apparently not used
2451 */
2452 return PerlIO_importFILE(popen(cmd, mode), 0);
7c0587c8
LW		 2453}
2454#endif
2455
2456#endif /* !DOSISH */
a687059c 2457
748a9306 2458#ifdef DUMP_FDS
35ff7856 2459void
864dbfa3 2460Perl_dump_fds(pTHX_ char *s)
ae986130
LW		 2461{
2462 int fd;
2463 struct stat tmpstatbuf;
2464
bf49b057 2465 PerlIO_printf(Perl_debug_log,"%s", s);
ae986130 2466 for (fd = 0; fd < 32; fd++) {
6ad3d225 2467 if (PerlLIO_fstat(fd,&tmpstatbuf) >= 0)
bf49b057 2468 PerlIO_printf(Perl_debug_log," %d",fd);
ae986130 2469 }
bf49b057 2470 PerlIO_printf(Perl_debug_log,"\n");
ae986130 2471}
35ff7856 2472#endif /* DUMP_FDS */
ae986130 2473
fe14fcc3 2474#ifndef HAS_DUP2
fec02dd3 2475int
ba106d47 2476dup2(int oldfd, int newfd)
a687059c 2477{
a0d0e21e 2478#if defined(HAS_FCNTL) && defined(F_DUPFD)
fec02dd3
AD		 2479 if (oldfd == newfd)
2480 return oldfd;
6ad3d225 2481 PerlLIO_close(newfd);
fec02dd3 2482 return fcntl(oldfd, F_DUPFD, newfd);
62b28dd9 2483#else
fc36a67e 2484#define DUP2_MAX_FDS 256
2485 int fdtmp[DUP2_MAX_FDS];
79072805 2486 I32 fdx = 0;
ae986130
LW		 2487 int fd;
2488
fe14fcc3 2489 if (oldfd == newfd)
fec02dd3 2490 return oldfd;
6ad3d225 2491 PerlLIO_close(newfd);
fc36a67e 2492 /* good enough for low fd's... */
6ad3d225 2493 while ((fd = PerlLIO_dup(oldfd)) != newfd && fd >= 0) {
fc36a67e 2494 if (fdx >= DUP2_MAX_FDS) {
6ad3d225 2495 PerlLIO_close(fd);
fc36a67e 2496 fd = -1;
2497 break;
2498 }
ae986130 2499 fdtmp[fdx++] = fd;
fc36a67e 2500 }
ae986130 2501 while (fdx > 0)
6ad3d225 2502 PerlLIO_close(fdtmp[--fdx]);
fec02dd3 2503 return fd;
62b28dd9 2504#endif
a687059c
LW		 2505}
2506#endif
2507
64ca3a65 2508#ifndef PERL_MICRO
ff68c719 2509#ifdef HAS_SIGACTION
2510
2511Sighandler_t
864dbfa3 2512Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2513{
2514 struct sigaction act, oact;
2515
2516 act.sa_handler = handler;
2517 sigemptyset(&act.sa_mask);
2518 act.sa_flags = 0;
2519#ifdef SA_RESTART
0a8e0eff 2520#if !defined(USE_PERLIO) || defined(PERL_OLD_SIGNALS)
ff68c719 2521 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2522#endif
0a8e0eff 2523#endif
85264bed
CS		 2524#ifdef SA_NOCLDWAIT
2525 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2526 act.sa_flags |= SA_NOCLDWAIT;
2527#endif
ff68c719 2528 if (sigaction(signo, &act, &oact) == -1)
36477c24 2529 return SIG_ERR;
ff68c719 2530 else
36477c24 2531 return oact.sa_handler;
ff68c719 2532}
2533
2534Sighandler_t
864dbfa3 2535Perl_rsignal_state(pTHX_ int signo)
ff68c719 2536{
2537 struct sigaction oact;
2538
2539 if (sigaction(signo, (struct sigaction *)NULL, &oact) == -1)
2540 return SIG_ERR;
2541 else
2542 return oact.sa_handler;
2543}
2544
2545int
864dbfa3 2546Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2547{
2548 struct sigaction act;
2549
2550 act.sa_handler = handler;
2551 sigemptyset(&act.sa_mask);
2552 act.sa_flags = 0;
2553#ifdef SA_RESTART
0a8e0eff 2554#if !defined(USE_PERLIO) || defined(PERL_OLD_SIGNALS)
ff68c719 2555 act.sa_flags |= SA_RESTART; /* SVR4, 4.3+BSD */
2556#endif
0a8e0eff 2557#endif
85264bed
CS		 2558#ifdef SA_NOCLDWAIT
2559 if (signo == SIGCHLD && handler == (Sighandler_t)SIG_IGN)
2560 act.sa_flags |= SA_NOCLDWAIT;
2561#endif
ff68c719 2562 return sigaction(signo, &act, save);
2563}
2564
2565int
864dbfa3 2566Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2567{
2568 return sigaction(signo, save, (struct sigaction *)NULL);
2569}
2570
2571#else /* !HAS_SIGACTION */
2572
2573Sighandler_t
864dbfa3 2574Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
ff68c719 2575{
6ad3d225 2576 return PerlProc_signal(signo, handler);
ff68c719 2577}
2578
2579static int sig_trapped;
2580
2581static
2582Signal_t
4e35701f 2583sig_trap(int signo)
ff68c719 2584{
2585 sig_trapped++;
2586}
2587
2588Sighandler_t
864dbfa3 2589Perl_rsignal_state(pTHX_ int signo)
ff68c719 2590{
2591 Sighandler_t oldsig;
2592
2593 sig_trapped = 0;
6ad3d225
GS		 2594 oldsig = PerlProc_signal(signo, sig_trap);
2595 PerlProc_signal(signo, oldsig);
ff68c719 2596 if (sig_trapped)
7766f137 2597 PerlProc_kill(PerlProc_getpid(), signo);
ff68c719 2598 return oldsig;
2599}
2600
2601int
864dbfa3 2602Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
ff68c719 2603{
6ad3d225 2604 *save = PerlProc_signal(signo, handler);
ff68c719 2605 return (*save == SIG_ERR) ? -1 : 0;
2606}
2607
2608int
864dbfa3 2609Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
ff68c719 2610{
6ad3d225 2611 return (PerlProc_signal(signo, *save) == SIG_ERR) ? -1 : 0;
ff68c719 2612}
2613
2614#endif /* !HAS_SIGACTION */
64ca3a65 2615#endif /* !PERL_MICRO */
ff68c719 2616
5f05dabc 2617 /* VMS' my_pclose() is in VMS.c; same with OS/2 */
cd39f2b6 2618#if (!defined(DOSISH) || defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(__OPEN_VM) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
79072805 2619I32
864dbfa3 2620Perl_my_pclose(pTHX_ PerlIO *ptr)
a687059c 2621{
ff68c719 2622 Sigsave_t hstat, istat, qstat;
a687059c 2623 int status;
a0d0e21e 2624 SV **svp;
d8a83dd3
JH		 2625 Pid_t pid;
2626 Pid_t pid2;
03136e13
CS		 2627 bool close_failed;
2628 int saved_errno;
2629#ifdef VMS
2630 int saved_vaxc_errno;
2631#endif
22fae026
TM		 2632#ifdef WIN32
2633 int saved_win32_errno;
2634#endif
a687059c 2635
4755096e 2636 LOCK_FDPID_MUTEX;
3280af22 2637 svp = av_fetch(PL_fdpid,PerlIO_fileno(ptr),TRUE);
4755096e 2638 UNLOCK_FDPID_MUTEX;
25d92023 2639 pid = (SvTYPE(*svp) == SVt_IV) ? SvIVX(*svp) : -1;
a0d0e21e 2640 SvREFCNT_dec(*svp);
3280af22 2641 *svp = &PL_sv_undef;
ddcf38b7
IZ		 2642#ifdef OS2
2643 if (pid == -1) { /* Opened by popen. */
2644 return my_syspclose(ptr);
2645 }
a1d180c4 2646#endif
03136e13
CS		 2647 if ((close_failed = (PerlIO_close(ptr) == EOF))) {
2648 saved_errno = errno;
2649#ifdef VMS
2650 saved_vaxc_errno = vaxc$errno;
2651#endif
22fae026
TM		 2652#ifdef WIN32
2653 saved_win32_errno = GetLastError();
2654#endif
03136e13 2655 }
7c0587c8 2656#ifdef UTS
6ad3d225 2657 if(PerlProc_kill(pid, 0) < 0) { return(pid); } /* HOM 12/23/91 */
7c0587c8 2658#endif
64ca3a65 2659#ifndef PERL_MICRO
ff68c719 2660 rsignal_save(SIGHUP, SIG_IGN, &hstat);
2661 rsignal_save(SIGINT, SIG_IGN, &istat);
2662 rsignal_save(SIGQUIT, SIG_IGN, &qstat);
64ca3a65 2663#endif
748a9306 2664 do {
1d3434b8
GS		 2665 pid2 = wait4pid(pid, &status, 0);
2666 } while (pid2 == -1 && errno == EINTR);
64ca3a65 2667#ifndef PERL_MICRO
ff68c719 2668 rsignal_restore(SIGHUP, &hstat);
2669 rsignal_restore(SIGINT, &istat);
2670 rsignal_restore(SIGQUIT, &qstat);
64ca3a65 2671#endif
03136e13
CS		 2672 if (close_failed) {
2673 SETERRNO(saved_errno, saved_vaxc_errno);
2674 return -1;
2675 }
1d3434b8 2676 return(pid2 < 0 ? pid2 : status == 0 ? 0 : (errno = 0, status));
20188a90 2677}
4633a7c4
LW		 2678#endif /* !DOSISH */
2679
cd39f2b6 2680#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
79072805 2681I32
d8a83dd3 2682Perl_wait4pid(pTHX_ Pid_t pid, int *statusp, int flags)
20188a90 2683{
79072805
LW		 2684 SV *sv;
2685 SV** svp;
fc36a67e 2686 char spid[TYPE_CHARS(int)];
20188a90
LW		 2687
2688 if (!pid)
2689 return -1;
68a29c53 2690#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
20188a90 2691 if (pid > 0) {
7b0972df 2692 sprintf(spid, "%"IVdf, (IV)pid);
3280af22
NIS		 2693 svp = hv_fetch(PL_pidstatus,spid,strlen(spid),FALSE);
2694 if (svp && *svp != &PL_sv_undef) {
463ee0b2 2695 *statusp = SvIVX(*svp);
3280af22 2696 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2697 return pid;
2698 }
2699 }
2700 else {
79072805 2701 HE *entry;
20188a90 2702
3280af22 2703 hv_iterinit(PL_pidstatus);
155aba94 2704 if ((entry = hv_iternext(PL_pidstatus))) {
a0d0e21e 2705 pid = atoi(hv_iterkey(entry,(I32*)statusp));
3280af22 2706 sv = hv_iterval(PL_pidstatus,entry);
463ee0b2 2707 *statusp = SvIVX(sv);
7b0972df 2708 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2709 (void)hv_delete(PL_pidstatus,spid,strlen(spid),G_DISCARD);
20188a90
LW		 2710 return pid;
2711 }
2712 }
68a29c53 2713#endif
79072805 2714#ifdef HAS_WAITPID
367f3c24
IZ		 2715# ifdef HAS_WAITPID_RUNTIME
2716 if (!HAS_WAITPID_RUNTIME)
2717 goto hard_way;
2718# endif
f55ee38a 2719 return PerlProc_waitpid(pid,statusp,flags);
367f3c24
IZ		 2720#endif
2721#if !defined(HAS_WAITPID) && defined(HAS_WAIT4)
a0d0e21e 2722 return wait4((pid==-1)?0:pid,statusp,flags,Null(struct rusage *));
367f3c24
IZ		 2723#endif
2724#if !defined(HAS_WAITPID) && !defined(HAS_WAIT4) || defined(HAS_WAITPID_RUNTIME)
2725 hard_way:
a0d0e21e
LW		 2726 {
2727 I32 result;
2728 if (flags)
cea2e8a9 2729 Perl_croak(aTHX_ "Can't do waitpid with flags");
a0d0e21e 2730 else {
76e3520e 2731 while ((result = PerlProc_wait(statusp)) != pid && pid > 0 && result >= 0)
a0d0e21e
LW		 2732 pidgone(result,*statusp);
2733 if (result < 0)
2734 *statusp = -1;
2735 }
2736 return result;
a687059c
LW		 2737 }
2738#endif
a687059c 2739}
2d7a9237 2740#endif /* !DOSISH || OS2 || WIN32 */
a687059c 2741
7c0587c8 2742void
de3bb511 2743/*SUPPRESS 590*/
d8a83dd3 2744Perl_pidgone(pTHX_ Pid_t pid, int status)
a687059c 2745{
79072805 2746 register SV *sv;
fc36a67e 2747 char spid[TYPE_CHARS(int)];
a687059c 2748
7b0972df 2749 sprintf(spid, "%"IVdf, (IV)pid);
3280af22 2750 sv = *hv_fetch(PL_pidstatus,spid,strlen(spid),TRUE);
a0d0e21e 2751 (void)SvUPGRADE(sv,SVt_IV);
463ee0b2 2752 SvIVX(sv) = status;
20188a90 2753 return;
a687059c
LW		 2754}
2755
55497cff 2756#if defined(atarist) || defined(OS2) || defined(DJGPP)
7c0587c8 2757int pclose();
ddcf38b7
IZ		 2758#ifdef HAS_FORK
2759int /* Cannot prototype with I32
2760 in os2ish.h. */
ba106d47 2761my_syspclose(PerlIO *ptr)
ddcf38b7 2762#else
79072805 2763I32
864dbfa3 2764Perl_my_pclose(pTHX_ PerlIO *ptr)
a1d180c4 2765#endif
a687059c 2766{
760ac839
LW		 2767 /* Needs work for PerlIO ! */
2768 FILE *f = PerlIO_findFILE(ptr);
2769 I32 result = pclose(f);
933fea7f
GS		 2770#if defined(DJGPP)
2771 result = (result << 8) & 0xff00;
2772#endif
760ac839
LW		 2773 PerlIO_releaseFILE(ptr,f);
2774 return result;
a687059c 2775}
7c0587c8 2776#endif
9f68db38
LW		 2777
2778void
864dbfa3 2779Perl_repeatcpy(pTHX_ register char *to, register const char *from, I32 len, register I32 count)
9f68db38 2780{
79072805 2781 register I32 todo;
08105a92 2782 register const char *frombase = from;
9f68db38
LW		 2783
2784 if (len == 1) {
08105a92 2785 register const char c = *from;
9f68db38 2786 while (count-- > 0)
5926133d 2787 *to++ = c;
9f68db38
LW		 2788 return;
2789 }
2790 while (count-- > 0) {
2791 for (todo = len; todo > 0; todo--) {
2792 *to++ = *from++;
2793 }
2794 from = frombase;
2795 }
2796}
0f85fab0 2797
463ee0b2 2798U32
65202027 2799Perl_cast_ulong(pTHX_ NV f)
0f85fab0
LW		 2800{
2801 long along;
2802
27e2fb84 2803#if CASTFLAGS & 2
34de22dd
LW		 2804# define BIGDOUBLE 2147483648.0
2805 if (f >= BIGDOUBLE)
2806 return (unsigned long)(f-(long)(f/BIGDOUBLE)*BIGDOUBLE)|0x80000000;
2807#endif
0f85fab0
LW		 2808 if (f >= 0.0)
2809 return (unsigned long)f;
2810 along = (long)f;
2811 return (unsigned long)along;
2812}
ed6116ce 2813# undef BIGDOUBLE
5d94fbed 2814
5d94fbed
AD		 2815/* Unfortunately, on some systems the cast_uv() function doesn't
2816 work with the system-supplied definition of ULONG_MAX. The
2817 comparison (f >= ULONG_MAX) always comes out true. It must be a
2818 problem with the compiler constant folding.
2819
2820 In any case, this workaround should be fine on any two's complement
2821 system. If it's not, supply a '-DMY_ULONG_MAX=whatever' in your
2822 ccflags.
2823 --Andy Dougherty <doughera@lafcol.lafayette.edu>
2824*/
1eb770ff 2825
2826/* Code modified to prefer proper named type ranges, I32, IV, or UV, instead
2827 of LONG_(MIN/MAX).
2828 -- Kenneth Albanowski <kjahds@kjahds.com>
a1d180c4 2829*/
1eb770ff 2830
20cec16a 2831#ifndef MY_UV_MAX
2832# define MY_UV_MAX ((UV)IV_MAX * (UV)2 + (UV)1)
5d94fbed
AD		 2833#endif
2834
ed6116ce 2835I32
65202027 2836Perl_cast_i32(pTHX_ NV f)
ed6116ce 2837{
20cec16a 2838 if (f >= I32_MAX)
2839 return (I32) I32_MAX;
2840 if (f <= I32_MIN)
2841 return (I32) I32_MIN;
ed6116ce
LW		 2842 return (I32) f;
2843}
a0d0e21e
LW		 2844
2845IV
65202027 2846Perl_cast_iv(pTHX_ NV f)
a0d0e21e 2847{
25da4f38
IZ		 2848 if (f >= IV_MAX) {
2849 UV uv;
2850
65202027 2851 if (f >= (NV)UV_MAX)
25da4f38
IZ		 2852 return (IV) UV_MAX;
2853 uv = (UV) f;
2854 return (IV)uv;
2855 }
20cec16a 2856 if (f <= IV_MIN)
2857 return (IV) IV_MIN;
a0d0e21e
LW		 2858 return (IV) f;
2859}
5d94fbed
AD		 2860
2861UV
65202027 2862Perl_cast_uv(pTHX_ NV f)
5d94fbed 2863{
20cec16a 2864 if (f >= MY_UV_MAX)
2865 return (UV) MY_UV_MAX;
25da4f38
IZ		 2866 if (f < 0) {
2867 IV iv;
2868
2869 if (f < IV_MIN)
2870 return (UV)IV_MIN;
2871 iv = (IV) f;
2872 return (UV) iv;
2873 }
5d94fbed
AD		 2874 return (UV) f;
2875}
2876
fe14fcc3 2877#ifndef HAS_RENAME
79072805 2878I32
864dbfa3 2879Perl_same_dirent(pTHX_ char *a, char *b)
62b28dd9 2880{
93a17b20
LW		 2881 char *fa = strrchr(a,'/');
2882 char *fb = strrchr(b,'/');
62b28dd9
LW		 2883 struct stat tmpstatbuf1;
2884 struct stat tmpstatbuf2;
46fc3d4c 2885 SV *tmpsv = sv_newmortal();
62b28dd9
LW		 2886
2887 if (fa)
2888 fa++;
2889 else
2890 fa = a;
2891 if (fb)
2892 fb++;
2893 else
2894 fb = b;
2895 if (strNE(a,b))
2896 return FALSE;
2897 if (fa == a)
46fc3d4c 2898 sv_setpv(tmpsv, ".");
62b28dd9 2899 else
46fc3d4c 2900 sv_setpvn(tmpsv, a, fa - a);
c6ed36e1 2901 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf1) < 0)
62b28dd9
LW		 2902 return FALSE;
2903 if (fb == b)
46fc3d4c 2904 sv_setpv(tmpsv, ".");
62b28dd9 2905 else
46fc3d4c 2906 sv_setpvn(tmpsv, b, fb - b);
c6ed36e1 2907 if (PerlLIO_stat(SvPVX(tmpsv), &tmpstatbuf2) < 0)
62b28dd9
LW		 2908 return FALSE;
2909 return tmpstatbuf1.st_dev == tmpstatbuf2.st_dev &&
2910 tmpstatbuf1.st_ino == tmpstatbuf2.st_ino;
2911}
fe14fcc3
LW		 2912#endif /* !HAS_RENAME */
2913
9e24b6e2 2914NV
ba210ebe 2915Perl_scan_bin(pTHX_ char *start, STRLEN len, STRLEN *retlen)
4f19785b
WSI		 2916{
2917 register char *s = start;
9e24b6e2
JH		 2918 register NV rnv = 0.0;
2919 register UV ruv = 0;
252aa082 2920 register bool seenb = FALSE;
9e24b6e2 2921 register bool overflowed = FALSE;
252aa082
JH		 2922
2923 for (; len-- && *s; s++) {
2924 if (!(*s == '0' || *s == '1')) {
b21ed0a9
GS		 2925 if (*s == '_' && len && *retlen
2926 && (s[1] == '0' || s[1] == '1'))
2927 {
2928 --len;
2929 ++s;
2930 }
2931 else if (seenb == FALSE && *s == 'b' && ruv == 0) {
252aa082
JH		 2932 /* Disallow 0bbb0b0bbb... */
2933 seenb = TRUE;
252aa082
JH		 2934 continue;
2935 }
2936 else {
627300f0
JH		 2937 if (ckWARN(WARN_DIGIT))
2938 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 2939 "Illegal binary digit '%c' ignored", *s);
2940 break;
2941 }
9e24b6e2
JH		 2942 }
2943 if (!overflowed) {
2944 register UV xuv = ruv << 1;
2945
2946 if ((xuv >> 1) != ruv) {
9e24b6e2
JH		 2947 overflowed = TRUE;
2948 rnv = (NV) ruv;
627300f0
JH		 2949 if (ckWARN_d(WARN_OVERFLOW))
2950 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 2951 "Integer overflow in binary number");
b21ed0a9
GS		 2952 }
2953 else
9e24b6e2
JH		 2954 ruv = xuv | (*s - '0');
2955 }
2956 if (overflowed) {
2957 rnv *= 2;
2958 /* If an NV has not enough bits in its mantissa to
2959 * represent an UV this summing of small low-order numbers
2960 * is a waste of time (because the NV cannot preserve
2961 * the low-order bits anyway): we could just remember when
2962 * did we overflow and in the end just multiply rnv by the
2cc4c2dc 2963 * right amount. */
9e24b6e2 2964 rnv += (*s - '0');
f248d071 2965 }
4f19785b 2966 }
9e24b6e2
JH		 2967 if (!overflowed)
2968 rnv = (NV) ruv;
893fe2c2 2969 if ( ( overflowed && rnv > 4294967295.0)
15041a67 2970#if UVSIZE > 4
893fe2c2
JH		 2971 || (!overflowed && ruv > 0xffffffff )
2972#endif
a1d180c4 2973 ) {
627300f0
JH		 2974 if (ckWARN(WARN_PORTABLE))
2975 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 2976 "Binary number > 0b11111111111111111111111111111111 non-portable");
4f19785b
WSI		 2977 }
2978 *retlen = s - start;
9e24b6e2 2979 return rnv;
4f19785b 2980}
9e24b6e2
JH		 2981
2982NV
ba210ebe 2983Perl_scan_oct(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW		 2984{
2985 register char *s = start;
9e24b6e2
JH		 2986 register NV rnv = 0.0;
2987 register UV ruv = 0;
2988 register bool overflowed = FALSE;
252aa082
JH		 2989
2990 for (; len-- && *s; s++) {
2991 if (!(*s >= '0' && *s <= '7')) {
b21ed0a9
GS		 2992 if (*s == '_' && len && *retlen
2993 && (s[1] >= '0' && s[1] <= '7'))
2994 {
2995 --len;
2996 ++s;
2997 }
252aa082 2998 else {
f84f607d
JH		 2999 /* Allow \octal to work the DWIM way (that is, stop scanning
3000 * as soon as non-octal characters are seen, complain only iff
3001 * someone seems to want to use the digits eight and nine). */
252aa082 3002 if (*s == '8' || *s == '9') {
627300f0
JH		 3003 if (ckWARN(WARN_DIGIT))
3004 Perl_warner(aTHX_ WARN_DIGIT,
252aa082
JH		 3005 "Illegal octal digit '%c' ignored", *s);
3006 }
3007 break;
3008 }
55497cff 3009 }
9e24b6e2 3010 if (!overflowed) {
893fe2c2 3011 register UV xuv = ruv << 3;
9e24b6e2
JH		 3012
3013 if ((xuv >> 3) != ruv) {
9e24b6e2
JH		 3014 overflowed = TRUE;
3015 rnv = (NV) ruv;
627300f0
JH		 3016 if (ckWARN_d(WARN_OVERFLOW))
3017 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3018 "Integer overflow in octal number");
b21ed0a9
GS		 3019 }
3020 else
9e24b6e2
JH		 3021 ruv = xuv | (*s - '0');
3022 }
3023 if (overflowed) {
3024 rnv *= 8.0;
3025 /* If an NV has not enough bits in its mantissa to
3026 * represent an UV this summing of small low-order numbers
3027 * is a waste of time (because the NV cannot preserve
3028 * the low-order bits anyway): we could just remember when
3029 * did we overflow and in the end just multiply rnv by the
3030 * right amount of 8-tuples. */
3031 rnv += (NV)(*s - '0');
3032 }
fe14fcc3 3033 }
9e24b6e2
JH		 3034 if (!overflowed)
3035 rnv = (NV) ruv;
893fe2c2 3036 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3037#if UVSIZE > 4
893fe2c2
JH		 3038 || (!overflowed && ruv > 0xffffffff )
3039#endif
3040 ) {
627300f0
JH		 3041 if (ckWARN(WARN_PORTABLE))
3042 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082 3043 "Octal number > 037777777777 non-portable");
d008e5eb 3044 }
fe14fcc3 3045 *retlen = s - start;
9e24b6e2 3046 return rnv;
fe14fcc3
LW		 3047}
3048
9e24b6e2 3049NV
ba210ebe 3050Perl_scan_hex(pTHX_ char *start, STRLEN len, STRLEN *retlen)
fe14fcc3
LW		 3051{
3052 register char *s = start;
9e24b6e2
JH		 3053 register NV rnv = 0.0;
3054 register UV ruv = 0;
9e24b6e2 3055 register bool overflowed = FALSE;
9e24b6e2 3056 char *hexdigit;
fe14fcc3 3057
cfd3e6cc
JH		 3058 if (len > 2) {
3059 if (s[0] == 'x') {
3060 s++;
3061 len--;
3062 }
3063 else if (len > 3 && s[0] == '0' && s[1] == 'x') {
3064 s+=2;
3065 len-=2;
3066 }
3067 }
3068
9e24b6e2
JH		 3069 for (; len-- && *s; s++) {
3070 hexdigit = strchr((char *) PL_hexdigit, *s);
3071 if (!hexdigit) {
b21ed0a9
GS		 3072 if (*s == '_' && len && *retlen && s[1]
3073 && (hexdigit = strchr((char *) PL_hexdigit, s[1])))
3074 {
3075 --len;
3076 ++s;
3077 }
a0ed51b3 3078 else {
627300f0
JH		 3079 if (ckWARN(WARN_DIGIT))
3080 Perl_warner(aTHX_ WARN_DIGIT,
252aa082 3081 "Illegal hexadecimal digit '%c' ignored", *s);
a0ed51b3
LW		 3082 break;
3083 }
3084 }
9e24b6e2
JH		 3085 if (!overflowed) {
3086 register UV xuv = ruv << 4;
3087
3088 if ((xuv >> 4) != ruv) {
9e24b6e2
JH		 3089 overflowed = TRUE;
3090 rnv = (NV) ruv;
627300f0
JH		 3091 if (ckWARN_d(WARN_OVERFLOW))
3092 Perl_warner(aTHX_ WARN_OVERFLOW,
9e24b6e2 3093 "Integer overflow in hexadecimal number");
b21ed0a9
GS		 3094 }
3095 else
9e24b6e2
JH		 3096 ruv = xuv | ((hexdigit - PL_hexdigit) & 15);
3097 }
3098 if (overflowed) {
3099 rnv *= 16.0;
3100 /* If an NV has not enough bits in its mantissa to
3101 * represent an UV this summing of small low-order numbers
3102 * is a waste of time (because the NV cannot preserve
3103 * the low-order bits anyway): we could just remember when
3104 * did we overflow and in the end just multiply rnv by the
3105 * right amount of 16-tuples. */
3106 rnv += (NV)((hexdigit - PL_hexdigit) & 15);
3107 }
6ff81951 3108 }
9e24b6e2
JH		 3109 if (!overflowed)
3110 rnv = (NV) ruv;
893fe2c2 3111 if ( ( overflowed && rnv > 4294967295.0)
15041a67 3112#if UVSIZE > 4
893fe2c2
JH		 3113 || (!overflowed && ruv > 0xffffffff )
3114#endif
a1d180c4 3115 ) {
627300f0
JH		 3116 if (ckWARN(WARN_PORTABLE))
3117 Perl_warner(aTHX_ WARN_PORTABLE,
252aa082
JH		 3118 "Hexadecimal number > 0xffffffff non-portable");
3119 }
fe14fcc3 3120 *retlen = s - start;
9e24b6e2 3121 return rnv;
fe14fcc3 3122}
760ac839 3123
491527d0 3124char*
864dbfa3 3125Perl_find_script(pTHX_ char *scriptname, bool dosearch, char **search_ext, I32 flags)
491527d0 3126{
491527d0
GS		 3127 char *xfound = Nullch;
3128 char *xfailed = Nullch;
0f31cffe 3129 char tmpbuf[MAXPATHLEN];
491527d0
GS		 3130 register char *s;
3131 I32 len;
3132 int retval;
3133#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
3134# define SEARCH_EXTS ".bat", ".cmd", NULL
3135# define MAX_EXT_LEN 4
3136#endif
3137#ifdef OS2
3138# define SEARCH_EXTS ".cmd", ".btm", ".bat", ".pl", NULL
3139# define MAX_EXT_LEN 4
3140#endif
3141#ifdef VMS
3142# define SEARCH_EXTS ".pl", ".com", NULL
3143# define MAX_EXT_LEN 4
3144#endif
3145 /* additional extensions to try in each dir if scriptname not found */
3146#ifdef SEARCH_EXTS
3147 char *exts[] = { SEARCH_EXTS };
3148 char **ext = search_ext ? search_ext : exts;
3149 int extidx = 0, i = 0;
3150 char *curext = Nullch;
3151#else
3152# define MAX_EXT_LEN 0
3153#endif
3154
3155 /*
3156 * If dosearch is true and if scriptname does not contain path
3157 * delimiters, search the PATH for scriptname.
3158 *
3159 * If SEARCH_EXTS is also defined, will look for each
3160 * scriptname{SEARCH_EXTS} whenever scriptname is not found
3161 * while searching the PATH.
3162 *
3163 * Assuming SEARCH_EXTS is C<".foo",".bar",NULL>, PATH search
3164 * proceeds as follows:
3165 * If DOSISH or VMSISH:
3166 * + look for ./scriptname{,.foo,.bar}
3167 * + search the PATH for scriptname{,.foo,.bar}
3168 *
3169 * If !DOSISH:
3170 * + look *only* in the PATH for scriptname{,.foo,.bar} (note
3171 * this will not look in '.' if it's not in the PATH)
3172 */
84486fc6 3173 tmpbuf[0] = '\0';
491527d0
GS		 3174
3175#ifdef VMS
3176# ifdef ALWAYS_DEFTYPES
3177 len = strlen(scriptname);
3178 if (!(len == 1 && *scriptname == '-') && scriptname[len-1] != ':') {
3179 int hasdir, idx = 0, deftypes = 1;
3180 bool seen_dot = 1;
3181
3182 hasdir = !dosearch || (strpbrk(scriptname,":[</") != Nullch) ;
3183# else
3184 if (dosearch) {
3185 int hasdir, idx = 0, deftypes = 1;
3186 bool seen_dot = 1;
3187
3188 hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
3189# endif
3190 /* The first time through, just add SEARCH_EXTS to whatever we
3191 * already have, so we can check for default file types. */
3192 while (deftypes ||
84486fc6 3193 (!hasdir && my_trnlnm("DCL$PATH",tmpbuf,idx++)) )
491527d0
GS		 3194 {
3195 if (deftypes) {
3196 deftypes = 0;
84486fc6 3197 *tmpbuf = '\0';
491527d0 3198 }
84486fc6
GS		 3199 if ((strlen(tmpbuf) + strlen(scriptname)
3200 + MAX_EXT_LEN) >= sizeof tmpbuf)
491527d0 3201 continue; /* don't search dir with too-long name */
84486fc6 3202 strcat(tmpbuf, scriptname);
491527d0
GS		 3203#else /* !VMS */
3204
3205#ifdef DOSISH
3206 if (strEQ(scriptname, "-"))
3207 dosearch = 0;
3208 if (dosearch) { /* Look in '.' first. */
3209 char *cur = scriptname;
3210#ifdef SEARCH_EXTS
3211 if ((curext = strrchr(scriptname,'.'))) /* possible current ext */
3212 while (ext[i])
3213 if (strEQ(ext[i++],curext)) {
3214 extidx = -1; /* already has an ext */
3215 break;
3216 }
3217 do {
3218#endif
3219 DEBUG_p(PerlIO_printf(Perl_debug_log,
3220 "Looking for %s\n",cur));
017f25f1
IZ		 3221 if (PerlLIO_stat(cur,&PL_statbuf) >= 0
3222 && !S_ISDIR(PL_statbuf.st_mode)) {
491527d0
GS		 3223 dosearch = 0;
3224 scriptname = cur;
3225#ifdef SEARCH_EXTS
3226 break;
3227#endif
3228 }
3229#ifdef SEARCH_EXTS
3230 if (cur == scriptname) {
3231 len = strlen(scriptname);
84486fc6 3232 if (len+MAX_EXT_LEN+1 >= sizeof(tmpbuf))
491527d0 3233 break;
84486fc6 3234 cur = strcpy(tmpbuf, scriptname);
491527d0
GS		 3235 }
3236 } while (extidx >= 0 && ext[extidx] /* try an extension? */
84486fc6 3237 && strcpy(tmpbuf+len, ext[extidx++]));
491527d0
GS		 3238#endif
3239 }
3240#endif
3241
cd39f2b6
JH		 3242#ifdef MACOS_TRADITIONAL
3243 if (dosearch && !strchr(scriptname, ':') &&
3244 (s = PerlEnv_getenv("Commands")))
3245#else
491527d0
GS		 3246 if (dosearch && !strchr(scriptname, '/')
3247#ifdef DOSISH
3248 && !strchr(scriptname, '\\')
3249#endif
cd39f2b6
JH		 3250 && (s = PerlEnv_getenv("PATH")))
3251#endif
3252 {
491527d0
GS		 3253 bool seen_dot = 0;
3254
3280af22
NIS		 3255 PL_bufend = s + strlen(s);
3256 while (s < PL_bufend) {
cd39f2b6
JH		 3257#ifdef MACOS_TRADITIONAL
3258 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
3259 ',',
3260 &len);
3261#else
491527d0
GS		 3262#if defined(atarist) || defined(DOSISH)
3263 for (len = 0; *s
3264# ifdef atarist
3265 && *s != ','
3266# endif
3267 && *s != ';'; len++, s++) {
84486fc6
GS		 3268 if (len < sizeof tmpbuf)
3269 tmpbuf[len] = *s;
491527d0 3270 }
84486fc6
GS		 3271 if (len < sizeof tmpbuf)
3272 tmpbuf[len] = '\0';
491527d0 3273#else /* ! (atarist || DOSISH) */
3280af22 3274 s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf, s, PL_bufend,
491527d0
GS		 3275 ':',
3276 &len);
3277#endif /* ! (atarist || DOSISH) */
cd39f2b6 3278#endif /* MACOS_TRADITIONAL */
3280af22 3279 if (s < PL_bufend)
491527d0 3280 s++;
84486fc6 3281 if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tmpbuf)
491527d0 3282 continue; /* don't search dir with too-long name */
cd39f2b6
JH		 3283#ifdef MACOS_TRADITIONAL
3284 if (len && tmpbuf[len - 1] != ':')
3285 tmpbuf[len++] = ':';
3286#else
491527d0 3287 if (len
61ae2fbf 3288#if defined(atarist) || defined(__MINT__) || defined(DOSISH)
84486fc6
GS		 3289 && tmpbuf[len - 1] != '/'
3290 && tmpbuf[len - 1] != '\\'
491527d0
GS		 3291#endif
3292 )
84486fc6
GS		 3293 tmpbuf[len++] = '/';
3294 if (len == 2 && tmpbuf[0] == '.')
491527d0 3295 seen_dot = 1;
cd39f2b6 3296#endif
84486fc6 3297 (void)strcpy(tmpbuf + len, scriptname);
491527d0
GS		 3298#endif /* !VMS */
3299
3300#ifdef SEARCH_EXTS
84486fc6 3301 len = strlen(tmpbuf);
491527d0
GS		 3302 if (extidx > 0) /* reset after previous loop */
3303 extidx = 0;
3304 do {
3305#endif
84486fc6 3306 DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tmpbuf));
3280af22 3307 retval = PerlLIO_stat(tmpbuf,&PL_statbuf);
017f25f1
IZ		 3308 if (S_ISDIR(PL_statbuf.st_mode)) {
3309 retval = -1;
3310 }
491527d0
GS		 3311#ifdef SEARCH_EXTS
3312 } while ( retval < 0 /* not there */
3313 && extidx>=0 && ext[extidx] /* try an extension? */
84486fc6 3314 && strcpy(tmpbuf+len, ext[extidx++])
491527d0
GS		 3315 );
3316#endif
3317 if (retval < 0)
3318 continue;
3280af22
NIS		 3319 if (S_ISREG(PL_statbuf.st_mode)
3320 && cando(S_IRUSR,TRUE,&PL_statbuf)
73811745 3321#if !defined(DOSISH) && !defined(MACOS_TRADITIONAL)
3280af22 3322 && cando(S_IXUSR,TRUE,&PL_statbuf)
491527d0
GS		 3323#endif
3324 )
3325 {
84486fc6 3326 xfound = tmpbuf; /* bingo! */
491527d0
GS		 3327 break;
3328 }
3329 if (!xfailed)
84486fc6 3330 xfailed = savepv(tmpbuf);
491527d0
GS		 3331 }
3332#ifndef DOSISH
017f25f1 3333 if (!xfound && !seen_dot && !xfailed &&
a1d180c4 3334 (PerlLIO_stat(scriptname,&PL_statbuf) < 0
017f25f1 3335 || S_ISDIR(PL_statbuf.st_mode)))
491527d0
GS		 3336#endif
3337 seen_dot = 1; /* Disable message. */
9ccb31f9
GS		 3338 if (!xfound) {
3339 if (flags & 1) { /* do or die? */
cea2e8a9 3340 Perl_croak(aTHX_ "Can't %s %s%s%s",
9ccb31f9
GS		 3341 (xfailed ? "execute" : "find"),
3342 (xfailed ? xfailed : scriptname),
3343 (xfailed ? "" : " on PATH"),
3344 (xfailed || seen_dot) ? "" : ", '.' not in PATH");
3345 }
3346 scriptname = Nullch;
3347 }
491527d0
GS		 3348 if (xfailed)
3349 Safefree(xfailed);
3350 scriptname = xfound;
3351 }
9ccb31f9 3352 return (scriptname ? savepv(scriptname) : Nullch);
491527d0
GS		 3353}
3354
ba869deb
GS		 3355#ifndef PERL_GET_CONTEXT_DEFINED
3356
3357void *
3358Perl_get_context(void)
3359{
3360#if defined(USE_THREADS) || defined(USE_ITHREADS)
3361# ifdef OLD_PTHREADS_API
3362 pthread_addr_t t;
3363 if (pthread_getspecific(PL_thr_key, &t))
3364 Perl_croak_nocontext("panic: pthread_getspecific");
3365 return (void*)t;
3366# else
c44d3fdb
GS		 3367# ifdef I_MACH_CTHREADS
3368 return (void*)cthread_data(cthread_self());
3369# else
ba869deb
GS		 3370 return (void*)pthread_getspecific(PL_thr_key);
3371# endif
c44d3fdb 3372# endif
ba869deb
GS		 3373#else
3374 return (void*)NULL;
3375#endif
3376}
3377
3378void
3379Perl_set_context(void *t)
3380{
3381#if defined(USE_THREADS) || defined(USE_ITHREADS)
c44d3fdb
GS		 3382# ifdef I_MACH_CTHREADS
3383 cthread_set_data(cthread_self(), t);
3384# else
ba869deb
GS		 3385 if (pthread_setspecific(PL_thr_key, t))
3386 Perl_croak_nocontext("panic: pthread_setspecific");
c44d3fdb 3387# endif
ba869deb
GS		 3388#endif
3389}
3390
3391#endif /* !PERL_GET_CONTEXT_DEFINED */
491527d0 3392
11343788 3393#ifdef USE_THREADS
ba869deb 3394
12ca11f6
MB		 3395#ifdef FAKE_THREADS
3396/* Very simplistic scheduler for now */
3397void
3398schedule(void)
3399{
c7848ba1 3400 thr = thr->i.next_run;
12ca11f6
MB		 3401}
3402
3403void
864dbfa3 3404Perl_cond_init(pTHX_ perl_cond *cp)
12ca11f6
MB		 3405{
3406 *cp = 0;
3407}
3408
3409void
864dbfa3 3410Perl_cond_signal(pTHX_ perl_cond *cp)
12ca11f6 3411{
51dd5992 3412 perl_os_thread t;
12ca11f6 3413 perl_cond cond = *cp;
a1d180c4 3414
12ca11f6
MB		 3415 if (!cond)
3416 return;
3417 t = cond->thread;
3418 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3419 t->i.next_run = thr->i.next_run;
3420 thr->i.next_run->i.prev_run = t;
3421 t->i.prev_run = thr;
3422 thr->i.next_run = t;
3423 thr->i.wait_queue = 0;
12ca11f6
MB		 3424 /* Remove from the wait queue */
3425 *cp = cond->next;
3426 Safefree(cond);
3427}
3428
3429void
864dbfa3 3430Perl_cond_broadcast(pTHX_ perl_cond *cp)
12ca11f6 3431{
51dd5992 3432 perl_os_thread t;
12ca11f6 3433 perl_cond cond, cond_next;
a1d180c4 3434
12ca11f6
MB		 3435 for (cond = *cp; cond; cond = cond_next) {
3436 t = cond->thread;
3437 /* Insert t in the runnable queue just ahead of us */
c7848ba1
MB		 3438 t->i.next_run = thr->i.next_run;
3439 thr->i.next_run->i.prev_run = t;
3440 t->i.prev_run = thr;
3441 thr->i.next_run = t;
3442 thr->i.wait_queue = 0;
12ca11f6
MB		 3443 /* Remove from the wait queue */
3444 cond_next = cond->next;
3445 Safefree(cond);
3446 }
3447 *cp = 0;
3448}
3449
3450void
864dbfa3 3451Perl_cond_wait(pTHX_ perl_cond *cp)
12ca11f6
MB		 3452{
3453 perl_cond cond;
3454
c7848ba1 3455 if (thr->i.next_run == thr)
cea2e8a9 3456 Perl_croak(aTHX_ "panic: perl_cond_wait called by last runnable thread");
a1d180c4 3457
0f15f207 3458 New(666, cond, 1, struct perl_wait_queue);
12ca11f6
MB		 3459 cond->thread = thr;
3460 cond->next = *cp;
3461 *cp = cond;
c7848ba1 3462 thr->i.wait_queue = cond;
12ca11f6 3463 /* Remove ourselves from runnable queue */
c7848ba1
MB		 3464 thr->i.next_run->i.prev_run = thr->i.prev_run;
3465 thr->i.prev_run->i.next_run = thr->i.next_run;
12ca11f6
MB		 3466}
3467#endif /* FAKE_THREADS */
3468
f93b4edd 3469MAGIC *
864dbfa3 3470Perl_condpair_magic(pTHX_ SV *sv)
f93b4edd
MB		 3471{
3472 MAGIC *mg;
a1d180c4 3473
f93b4edd
MB		 3474 SvUPGRADE(sv, SVt_PVMG);
3475 mg = mg_find(sv, 'm');
3476 if (!mg) {
3477 condpair_t *cp;
3478
3479 New(53, cp, 1, condpair_t);
3480 MUTEX_INIT(&cp->mutex);
3481 COND_INIT(&cp->owner_cond);
3482 COND_INIT(&cp->cond);
3483 cp->owner = 0;
1feb2720 3484 LOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3485 mg = mg_find(sv, 'm');
3486 if (mg) {
3487 /* someone else beat us to initialising it */
1feb2720 3488 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
f93b4edd
MB		 3489 MUTEX_DESTROY(&cp->mutex);
3490 COND_DESTROY(&cp->owner_cond);
3491 COND_DESTROY(&cp->cond);
3492 Safefree(cp);
3493 }
3494 else {
3495 sv_magic(sv, Nullsv, 'm', 0, 0);
3496 mg = SvMAGIC(sv);
3497 mg->mg_ptr = (char *)cp;
565764a8 3498 mg->mg_len = sizeof(cp);
1feb2720 3499 UNLOCK_CRED_MUTEX; /* XXX need separate mutex? */
bf49b057 3500 DEBUG_S(WITH_THR(PerlIO_printf(Perl_debug_log,
c7848ba1 3501 "%p: condpair_magic %p\n", thr, sv));)
f93b4edd
MB		 3502 }
3503 }
3504 return mg;
3505}
a863c7d1 3506
3d35f11b 3507SV *
4755096e 3508Perl_sv_lock(pTHX_ SV *osv)
3d35f11b
GS		 3509{
3510 MAGIC *mg;
3511 SV *sv = osv;
3512
631cfb58 3513 LOCK_SV_LOCK_MUTEX;
3d35f11b
GS		 3514 if (SvROK(sv)) {
3515 sv = SvRV(sv);
3d35f11b
GS		 3516 }
3517
3518 mg = condpair_magic(sv);
3519 MUTEX_LOCK(MgMUTEXP(mg));
3520 if (MgOWNER(mg) == thr)
3521 MUTEX_UNLOCK(MgMUTEXP(mg));
4755096e 3522 else {
3d35f11b
GS		 3523 while (MgOWNER(mg))
3524 COND_WAIT(MgOWNERCONDP(mg), MgMUTEXP(mg));
3525 MgOWNER(mg) = thr;
4755096e
GS		 3526 DEBUG_S(PerlIO_printf(Perl_debug_log,
3527 "0x%"UVxf": Perl_lock lock 0x%"UVxf"\n",
3d35f11b
GS		 3528 PTR2UV(thr), PTR2UV(sv));)
3529 MUTEX_UNLOCK(MgMUTEXP(mg));
3530 SAVEDESTRUCTOR_X(Perl_unlock_condpair, sv);
3531 }
631cfb58 3532 UNLOCK_SV_LOCK_MUTEX;
4755096e 3533 return sv;
3d35f11b
GS		 3534}
3535
a863c7d1 3536/*
199100c8
MB		 3537 * Make a new perl thread structure using t as a prototype. Some of the
3538 * fields for the new thread are copied from the prototype thread, t,
3539 * so t should not be running in perl at the time this function is
3540 * called. The use by ext/Thread/Thread.xs in core perl (where t is the
3541 * thread calling new_struct_thread) clearly satisfies this constraint.
a863c7d1 3542 */
52e1cb5e 3543struct perl_thread *
864dbfa3 3544Perl_new_struct_thread(pTHX_ struct perl_thread *t)
a863c7d1 3545{
c5be433b 3546#if !defined(PERL_IMPLICIT_CONTEXT)
52e1cb5e 3547 struct perl_thread *thr;
cea2e8a9 3548#endif
a863c7d1 3549 SV *sv;
199100c8
MB		 3550 SV **svp;
3551 I32 i;
3552
79cb57f6 3553 sv = newSVpvn("", 0);
52e1cb5e
JH		 3554 SvGROW(sv, sizeof(struct perl_thread) + 1);
3555 SvCUR_set(sv, sizeof(struct perl_thread));
199100c8 3556 thr = (Thread) SvPVX(sv);
949ced2d 3557#ifdef DEBUGGING
52e1cb5e 3558 memset(thr, 0xab, sizeof(struct perl_thread));
533c011a
NIS		 3559 PL_markstack = 0;
3560 PL_scopestack = 0;
3561 PL_savestack = 0;
3562 PL_retstack = 0;
3563 PL_dirty = 0;
3564 PL_localizing = 0;
949ced2d 3565 Zero(&PL_hv_fetch_ent_mh, 1, HE);
d0e9ca0c
HS		 3566 PL_efloatbuf = (char*)NULL;
3567 PL_efloatsize = 0;
949ced2d
GS		 3568#else
3569 Zero(thr, 1, struct perl_thread);
3570#endif
199100c8
MB		 3571
3572 thr->oursv = sv;
cea2e8a9 3573 init_stacks();
a863c7d1 3574
533c011a 3575 PL_curcop = &PL_compiling;
c5be433b 3576 thr->interp = t->interp;
199100c8 3577 thr->cvcache = newHV();
54b9620d 3578 thr->threadsv = newAV();
a863c7d1 3579 thr->specific = newAV();
79cb57f6 3580 thr->errsv = newSVpvn("", 0);
a863c7d1 3581 thr->flags = THRf_R_JOINABLE;
8dcd6f7b 3582 thr->thr_done = 0;
a863c7d1 3583 MUTEX_INIT(&thr->mutex);
199100c8 3584
5c831c24 3585 JMPENV_BOOTSTRAP;
533c011a 3586
6dc8a9e4 3587 PL_in_eval = EVAL_NULL; /* ~(EVAL_INEVAL|EVAL_WARNONLY|EVAL_KEEPERR|EVAL_INREQUIRE) */
533c011a
NIS		 3588 PL_restartop = 0;
3589
b099ddc0 3590 PL_statname = NEWSV(66,0);
5a844595 3591 PL_errors = newSVpvn("", 0);
b099ddc0 3592 PL_maxscream = -1;
0b94c7bb
GS		 3593 PL_regcompp = MEMBER_TO_FPTR(Perl_pregcomp);
3594 PL_regexecp = MEMBER_TO_FPTR(Perl_regexec_flags);
3595 PL_regint_start = MEMBER_TO_FPTR(Perl_re_intuit_start);
3596 PL_regint_string = MEMBER_TO_FPTR(Perl_re_intuit_string);
3597 PL_regfree = MEMBER_TO_FPTR(Perl_pregfree);
b099ddc0
GS		 3598 PL_regindent = 0;
3599 PL_reginterp_cnt = 0;
3600 PL_lastscream = Nullsv;
3601 PL_screamfirst = 0;
3602 PL_screamnext = 0;
3603 PL_reg_start_tmp = 0;
3604 PL_reg_start_tmpl = 0;
14ed4b74 3605 PL_reg_poscache = Nullch;
b099ddc0
GS		 3606
3607 /* parent thread's data needs to be locked while we make copy */
3608 MUTEX_LOCK(&t->mutex);
3609
14dd3ad8 3610#ifdef PERL_FLEXIBLE_EXCEPTIONS
312caa8e 3611 PL_protect = t->Tprotect;
14dd3ad8 3612#endif
312caa8e 3613
b099ddc0
GS		 3614 PL_curcop = t->Tcurcop; /* XXX As good a guess as any? */
3615 PL_defstash = t->Tdefstash; /* XXX maybe these should */
3616 PL_curstash = t->Tcurstash; /* always be set to main? */
3617
6b88bc9c 3618 PL_tainted = t->Ttainted;
84fee439
NIS		 3619 PL_curpm = t->Tcurpm; /* XXX No PMOP ref count */
3620 PL_nrs = newSVsv(t->Tnrs);
7d3de3d5 3621 PL_rs = t->Tnrs ? SvREFCNT_inc(PL_nrs) : Nullsv;
84fee439 3622 PL_last_in_gv = Nullgv;
7d3de3d5 3623 PL_ofs_sv = t->Tofs_sv ? SvREFCNT_inc(PL_ofs_sv) : Nullsv;
84fee439
NIS		 3624 PL_defoutgv = (GV*)SvREFCNT_inc(t->Tdefoutgv);
3625 PL_chopset = t->Tchopset;
84fee439
NIS		 3626 PL_bodytarget = newSVsv(t->Tbodytarget);
3627 PL_toptarget = newSVsv(t->Ttoptarget);
5c831c24
GS		 3628 if (t->Tformtarget == t->Ttoptarget)
3629 PL_formtarget = PL_toptarget;
3630 else
3631 PL_formtarget = PL_bodytarget;
533c011a 3632
54b9620d
MB		 3633 /* Initialise all per-thread SVs that the template thread used */
3634 svp = AvARRAY(t->threadsv);
93965878 3635 for (i = 0; i <= AvFILLp(t->threadsv); i++, svp++) {
533c011a 3636 if (*svp && *svp != &PL_sv_undef) {
199100c8 3637 SV *sv = newSVsv(*svp);
54b9620d 3638 av_store(thr->threadsv, i, sv);
533c011a 3639 sv_magic(sv, 0, 0, &PL_threadsv_names[i], 1);
bf49b057 3640 DEBUG_S(PerlIO_printf(Perl_debug_log,
f1dbda3d
JH		 3641 "new_struct_thread: copied threadsv %"IVdf" %p->%p\n",
3642 (IV)i, t, thr));
199100c8 3643 }
a1d180c4 3644 }
940cb80d 3645 thr->threadsvp = AvARRAY(thr->threadsv);
199100c8 3646
533c011a
NIS		 3647 MUTEX_LOCK(&PL_threads_mutex);
3648 PL_nthreads++;
3649 thr->tid = ++PL_threadnum;
199100c8
MB		 3650 thr->next = t->next;
3651 thr->prev = t;
3652 t->next = thr;
3653 thr->next->prev = thr;
533c011a 3654 MUTEX_UNLOCK(&PL_threads_mutex);
a863c7d1 3655
b099ddc0
GS		 3656 /* done copying parent's state */
3657 MUTEX_UNLOCK(&t->mutex);
3658
a863c7d1 3659#ifdef HAVE_THREAD_INTERN
4f63d024 3660 Perl_init_thread_intern(thr);
a863c7d1 3661#endif /* HAVE_THREAD_INTERN */
a863c7d1
MB		 3662 return thr;
3663}
11343788 3664#endif /* USE_THREADS */
760ac839 3665
4d46a988 3666#if defined(HUGE_VAL) || (defined(USE_LONG_DOUBLE) && defined(HUGE_VALL))
760ac839
LW		 3667/*
3668 * This hack is to force load of "huge" support from libm.a
a1d180c4 3669 * So it is in perl for (say) POSIX to use.
760ac839
LW		 3670 * Needed for SunOS with Sun's 'acc' for example.
3671 */
a1d180c4 3672NV
8ac85365 3673Perl_huge(void)
760ac839 3674{
4d46a988
JH		 3675# if defined(USE_LONG_DOUBLE) && defined(HUGE_VALL)
3676 return HUGE_VALL;
3677# endif
3678 return HUGE_VAL;
760ac839
LW		 3679}
3680#endif
4e35701f 3681
22239a37
NIS		 3682#ifdef PERL_GLOBAL_STRUCT
3683struct perl_vars *
864dbfa3 3684Perl_GetVars(pTHX)
22239a37 3685{
533c011a 3686 return &PL_Vars;
22239a37 3687}
31fb1209
NIS		 3688#endif
3689
3690char **
864dbfa3 3691Perl_get_op_names(pTHX)
31fb1209 3692{
22c35a8c 3693 return PL_op_name;
31fb1209
NIS		 3694}
3695
3696char **
864dbfa3 3697Perl_get_op_descs(pTHX)
31fb1209 3698{
22c35a8c 3699 return PL_op_desc;
31fb1209 3700}
9e6b2b00
GS		 3701
3702char *
864dbfa3 3703Perl_get_no_modify(pTHX)
9e6b2b00 3704{
22c35a8c 3705 return (char*)PL_no_modify;
9e6b2b00
GS		 3706}
3707
3708U32 *
864dbfa3 3709Perl_get_opargs(pTHX)
9e6b2b00 3710{
22c35a8c 3711 return PL_opargs;
9e6b2b00 3712}
51aa15f3 3713
0cb96387
GS		 3714PPADDR_t*
3715Perl_get_ppaddr(pTHX)
3716{
12ae5dfc 3717 return (PPADDR_t*)PL_ppaddr;
0cb96387
GS		 3718}
3719
a6c40364
GS		 3720#ifndef HAS_GETENV_LEN
3721char *
bf4acbe4 3722Perl_getenv_len(pTHX_ const char *env_elem, unsigned long *len)
a6c40364
GS		 3723{
3724 char *env_trans = PerlEnv_getenv(env_elem);
3725 if (env_trans)
3726 *len = strlen(env_trans);
3727 return env_trans;
f675dbe5
CB		 3728}
3729#endif
3730
dc9e4912
GS		 3731
3732MGVTBL*
864dbfa3 3733Perl_get_vtbl(pTHX_ int vtbl_id)
dc9e4912
GS		 3734{
3735 MGVTBL* result = Null(MGVTBL*);
3736
3737 switch(vtbl_id) {
3738 case want_vtbl_sv:
3739 result = &PL_vtbl_sv;
3740 break;
3741 case want_vtbl_env:
3742 result = &PL_vtbl_env;
3743 break;
3744 case want_vtbl_envelem:
3745 result = &PL_vtbl_envelem;
3746 break;
3747 case want_vtbl_sig:
3748 result = &PL_vtbl_sig;
3749 break;
3750 case want_vtbl_sigelem:
3751 result = &PL_vtbl_sigelem;
3752 break;
3753 case want_vtbl_pack:
3754 result = &PL_vtbl_pack;
3755 break;
3756 case want_vtbl_packelem:
3757 result = &PL_vtbl_packelem;
3758 break;
3759 case want_vtbl_dbline:
3760 result = &PL_vtbl_dbline;
3761 break;
3762 case want_vtbl_isa:
3763 result = &PL_vtbl_isa;
3764 break;
3765 case want_vtbl_isaelem:
3766 result = &PL_vtbl_isaelem;
3767 break;
3768 case want_vtbl_arylen:
3769 result = &PL_vtbl_arylen;
3770 break;
3771 case want_vtbl_glob:
3772 result = &PL_vtbl_glob;
3773 break;
3774 case want_vtbl_mglob:
3775 result = &PL_vtbl_mglob;
3776 break;
3777 case want_vtbl_nkeys:
3778 result = &PL_vtbl_nkeys;
3779 break;
3780 case want_vtbl_taint:
3781 result = &PL_vtbl_taint;
3782 break;
3783 case want_vtbl_substr:
3784 result = &PL_vtbl_substr;
3785 break;
3786 case want_vtbl_vec:
3787 result = &PL_vtbl_vec;
3788 break;
3789 case want_vtbl_pos:
3790 result = &PL_vtbl_pos;
3791 break;
3792 case want_vtbl_bm:
3793 result = &PL_vtbl_bm;
3794 break;
3795 case want_vtbl_fm:
3796 result = &PL_vtbl_fm;
3797 break;
3798 case want_vtbl_uvar:
3799 result = &PL_vtbl_uvar;
3800 break;
3801#ifdef USE_THREADS
3802 case want_vtbl_mutex:
3803 result = &PL_vtbl_mutex;
3804 break;
3805#endif
3806 case want_vtbl_defelem:
3807 result = &PL_vtbl_defelem;
3808 break;
3809 case want_vtbl_regexp:
3810 result = &PL_vtbl_regexp;
3811 break;
3812 case want_vtbl_regdata:
3813 result = &PL_vtbl_regdata;
3814 break;
3815 case want_vtbl_regdatum:
3816 result = &PL_vtbl_regdatum;
3817 break;
3c90161d 3818#ifdef USE_LOCALE_COLLATE
dc9e4912
GS		 3819 case want_vtbl_collxfrm:
3820 result = &PL_vtbl_collxfrm;
3821 break;
3c90161d 3822#endif
dc9e4912
GS		 3823 case want_vtbl_amagic:
3824 result = &PL_vtbl_amagic;
3825 break;
3826 case want_vtbl_amagicelem:
3827 result = &PL_vtbl_amagicelem;
3828 break;
810b8aa5
GS		 3829 case want_vtbl_backref:
3830 result = &PL_vtbl_backref;
3831 break;
dc9e4912
GS		 3832 }
3833 return result;
3834}
3835
767df6a1 3836I32
864dbfa3 3837Perl_my_fflush_all(pTHX)
767df6a1 3838{
74cac757 3839#if defined(FFLUSH_NULL)
ce720889 3840 return PerlIO_flush(NULL);
767df6a1 3841#else
74cac757
JH		 3842# if defined(HAS__FWALK)
3843 /* undocumented, unprototyped, but very useful BSDism */
3844 extern void _fwalk(int (*)(FILE *));
3845 _fwalk(&fflush);
3846 return 0;
3847# else
767df6a1 3848 long open_max = -1;
74cac757
JH		 3849# if defined(FFLUSH_ALL) && defined(HAS_STDIO_STREAM_ARRAY)
3850# ifdef PERL_FFLUSH_ALL_FOPEN_MAX
d2201af2 3851 open_max = PERL_FFLUSH_ALL_FOPEN_MAX;
74cac757
JH		 3852# else
3853# if defined(HAS_SYSCONF) && defined(_SC_OPEN_MAX)
767df6a1 3854 open_max = sysconf(_SC_OPEN_MAX);
767df6a1 3855# else
74cac757
JH		 3856# ifdef FOPEN_MAX
3857 open_max = FOPEN_MAX;
767df6a1 3858# else
74cac757
JH		 3859# ifdef OPEN_MAX
3860 open_max = OPEN_MAX;
3861# else
3862# ifdef _NFILE
d2201af2 3863 open_max = _NFILE;
74cac757 3864# endif
767df6a1
JH		 3865# endif
3866# endif
3867# endif
74cac757 3868# endif
767df6a1
JH		 3869 if (open_max > 0) {
3870 long i;
3871 for (i = 0; i < open_max; i++)
d2201af2
AD		 3872 if (STDIO_STREAM_ARRAY[i]._file >= 0 &&
3873 STDIO_STREAM_ARRAY[i]._file < open_max &&
3874 STDIO_STREAM_ARRAY[i]._flag)
3875 PerlIO_flush(&STDIO_STREAM_ARRAY[i]);
767df6a1
JH		 3876 return 0;
3877 }
74cac757 3878# endif
767df6a1
JH		 3879 SETERRNO(EBADF,RMS$_IFI);
3880 return EOF;
74cac757 3881# endif
767df6a1
JH		 3882#endif
3883}
097ee67d 3884
65202027 3885NV
69282e91
GS		 3886Perl_my_atof(pTHX_ const char* s)
3887{
ebd4816b 3888 NV x = 0.0;
097ee67d 3889#ifdef USE_LOCALE_NUMERIC
d43ce814 3890 if ((PL_hints & HINT_LOCALE) && PL_numeric_local) {
ebd4816b 3891 NV y;
097ee67d 3892
ebd4816b 3893 Perl_atof2(s, x);
097ee67d 3894 SET_NUMERIC_STANDARD();
ebd4816b 3895 Perl_atof2(s, y);
097ee67d
JH		 3896 SET_NUMERIC_LOCAL();
3897 if ((y < 0.0 && y < x) || (y > 0.0 && y > x))
3898 return y;
65202027
DS		 3899 }
3900 else
ebd4816b 3901 Perl_atof2(s, x);
097ee67d 3902#else
ebd4816b 3903 Perl_atof2(s, x);
097ee67d 3904#endif
ebd4816b 3905 return x;
097ee67d 3906}
69282e91
GS		 3907
3908void
bc37a18f
RG		 3909Perl_report_evil_fh(pTHX_ GV *gv, IO *io, I32 op)
3910{
9c0fcd4f 3911 char *vile;
4e34385f 3912 I32 warn_type;
bc37a18f 3913 char *func =
66fc2fa5
JH		 3914 op == OP_READLINE ? "readline" : /* "<HANDLE>" not nice */
3915 op == OP_LEAVEWRITE ? "write" : /* "write exit" not nice */
bc37a18f
RG		 3916 PL_op_desc[op];
3917 char *pars = OP_IS_FILETEST(op) ? "" : "()";
50952442 3918 char *type = OP_IS_SOCKET(op) || (io && IoTYPE(io) == IoTYPE_SOCKET) ?
2dd78f96 3919 "socket" : "filehandle";
9c0fcd4f 3920 char *name = NULL;
bc37a18f 3921
50952442 3922 if (io && IoTYPE(io) == IoTYPE_CLOSED) {
9c0fcd4f 3923 vile = "closed";
4e34385f 3924 warn_type = WARN_CLOSED;
2dd78f96
JH		 3925 }
3926 else {
9c0fcd4f 3927 vile = "unopened";
4e34385f 3928 warn_type = WARN_UNOPENED;
9c0fcd4f 3929 }
bc37a18f 3930
66fc2fa5
JH		 3931 if (gv && isGV(gv)) {
3932 SV *sv = sv_newmortal();
3933 gv_efullname4(sv, gv, Nullch, FALSE);
3934 name = SvPVX(sv);
3935 }
3936
4c80c0b2
NC		 3937 if (op == OP_phoney_OUTPUT_ONLY || op == OP_phoney_INPUT_ONLY) {
3938 if (name && *name)
3939 Perl_warner(aTHX_ WARN_IO, "Filehandle %s opened only for %sput",
7889fe52 3940 name,
4c80c0b2
NC		 3941 (op == OP_phoney_INPUT_ONLY ? "in" : "out"));
3942 else
3943 Perl_warner(aTHX_ WARN_IO, "Filehandle opened only for %sput",
3944 (op == OP_phoney_INPUT_ONLY ? "in" : "out"));
3945 } else if (name && *name) {
4e34385f 3946 Perl_warner(aTHX_ warn_type,
9c0fcd4f 3947 "%s%s on %s %s %s", func, pars, vile, type, name);
3e11456d 3948 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
4e34385f 3949 Perl_warner(aTHX_ warn_type,
bc37a18f
RG		 3950 "\t(Are you trying to call %s%s on dirhandle %s?)\n",
3951 func, pars, name);
2dd78f96
JH		 3952 }
3953 else {
4e34385f 3954 Perl_warner(aTHX_ warn_type,
9c0fcd4f 3955 "%s%s on %s %s", func, pars, vile, type);
3e11456d 3956 if (io && IoDIRP(io) && !(IoFLAGS(io) & IOf_FAKE_DIRP))
4e34385f 3957 Perl_warner(aTHX_ warn_type,
bc37a18f
RG		 3958 "\t(Are you trying to call %s%s on dirhandle?)\n",
3959 func, pars);
3960 }
69282e91 3961}
a926ef6b
JH		 3962
3963#ifdef EBCDIC
cbebf344
JH		 3964/* in ASCII order, not that it matters */
3965static const char controllablechars[] = "?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_";
3966
a926ef6b
JH		 3967int
3968Perl_ebcdic_control(pTHX_ int ch)
3969{
3970 if (ch > 'a') {
3971 char *ctlp;
3972
3973 if (islower(ch))
3974 ch = toupper(ch);
3975
3976 if ((ctlp = strchr(controllablechars, ch)) == 0) {
3977 Perl_die(aTHX_ "unrecognised control character '%c'\n", ch);
3978 }
3979
3980 if (ctlp == controllablechars)
3981 return('\177'); /* DEL */
3982 else
3983 return((unsigned char)(ctlp - controllablechars - 1));
3984 } else { /* Want uncontrol */
3985 if (ch == '\177' || ch == -1)
3986 return('?');
3987 else if (ch == '\157')
3988 return('\177');
3989 else if (ch == '\174')
3990 return('\000');
3991 else if (ch == '^') /* '\137' in 1047, '\260' in 819 */
3992 return('\036');
3993 else if (ch == '\155')
3994 return('\037');
3995 else if (0 < ch && ch < (sizeof(controllablechars) - 1))
3996 return(controllablechars[ch+1]);
3997 else
3998 Perl_die(aTHX_ "invalid control request: '\\%03o'\n", ch & 0xFF);
3999 }
4000}
4001#endif
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