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Retract #8552.
[perl5.git] / sv.c
CommitLineData
a0d0e21e 1/* sv.c
79072805 2 *
bc89e66f 3 * Copyright (c) 1991-2001, Larry Wall
79072805
LW		 4 *
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.
7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
79072805
LW		 12 */
13
14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_SV_C
79072805 16#include "perl.h"
79072805 17
51371543 18#define FCALL *f
6fc92669 19#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
2c5424a7 20
51371543
GS		 21static void do_report_used(pTHXo_ SV *sv);
22static void do_clean_objs(pTHXo_ SV *sv);
23#ifndef DISABLE_DESTRUCTOR_KLUDGE
24static void do_clean_named_objs(pTHXo_ SV *sv);
25#endif
26static void do_clean_all(pTHXo_ SV *sv);
27
4561caa4
CS		 28/*
29 * "A time to plant, and a time to uproot what was planted..."
30 */
31
053fc874
GS		 32#define plant_SV(p) \
33 STMT_START { \
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
36 PL_sv_root = (p); \
37 --PL_sv_count; \
38 } STMT_END
a0d0e21e 39
fba3b22e 40/* sv_mutex must be held while calling uproot_SV() */
053fc874
GS		 41#define uproot_SV(p) \
42 STMT_START { \
43 (p) = PL_sv_root; \
44 PL_sv_root = (SV*)SvANY(p); \
45 ++PL_sv_count; \
46 } STMT_END
47
48#define new_SV(p) \
49 STMT_START { \
50 LOCK_SV_MUTEX; \
51 if (PL_sv_root) \
52 uproot_SV(p); \
53 else \
54 (p) = more_sv(); \
55 UNLOCK_SV_MUTEX; \
56 SvANY(p) = 0; \
57 SvREFCNT(p) = 1; \
58 SvFLAGS(p) = 0; \
59 } STMT_END
463ee0b2 60
a0d0e21e 61#ifdef DEBUGGING
4561caa4 62
053fc874
GS		 63#define del_SV(p) \
64 STMT_START { \
65 LOCK_SV_MUTEX; \
66 if (PL_debug & 32768) \
67 del_sv(p); \
68 else \
69 plant_SV(p); \
70 UNLOCK_SV_MUTEX; \
71 } STMT_END
a0d0e21e 72
76e3520e 73STATIC void
cea2e8a9 74S_del_sv(pTHX_ SV *p)
463ee0b2 75{
3280af22 76 if (PL_debug & 32768) {
4633a7c4 77 SV* sva;
a0d0e21e
LW		 78 SV* sv;
79 SV* svend;
80 int ok = 0;
3280af22 81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
4633a7c4
LW		 82 sv = sva + 1;
83 svend = &sva[SvREFCNT(sva)];
a0d0e21e
LW		 84 if (p >= sv && p < svend)
85 ok = 1;
86 }
87 if (!ok) {
0453d815
PM		 88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
1d7c1841
GS		 90 "Attempt to free non-arena SV: 0x%"UVxf,
91 PTR2UV(p));
a0d0e21e
LW		 92 return;
93 }
94 }
4561caa4 95 plant_SV(p);
463ee0b2 96}
a0d0e21e 97
4561caa4
CS		 98#else /* ! DEBUGGING */
99
100#define del_SV(p) plant_SV(p)
101
102#endif /* DEBUGGING */
463ee0b2 103
4633a7c4 104void
864dbfa3 105Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
463ee0b2 106{
4633a7c4 107 SV* sva = (SV*)ptr;
463ee0b2
LW		 108 register SV* sv;
109 register SV* svend;
14dd3ad8 110 Zero(ptr, size, char);
4633a7c4
LW		 111
112 /* The first SV in an arena isn't an SV. */
3280af22 113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
4633a7c4
LW		 114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
116
3280af22
NIS		 117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
4633a7c4
LW		 119
120 svend = &sva[SvREFCNT(sva) - 1];
121 sv = sva + 1;
463ee0b2 122 while (sv < svend) {
a0d0e21e 123 SvANY(sv) = (void *)(SV*)(sv + 1);
8990e307 124 SvFLAGS(sv) = SVTYPEMASK;
463ee0b2
LW		 125 sv++;
126 }
127 SvANY(sv) = 0;
4633a7c4
LW		 128 SvFLAGS(sv) = SVTYPEMASK;
129}
130
fba3b22e 131/* sv_mutex must be held while calling more_sv() */
76e3520e 132STATIC SV*
cea2e8a9 133S_more_sv(pTHX)
4633a7c4 134{
4561caa4
CS		 135 register SV* sv;
136
3280af22
NIS		 137 if (PL_nice_chunk) {
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
c07a80fd 140 }
1edc1566 141 else {
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
145 }
4561caa4
CS		 146 uproot_SV(sv);
147 return sv;
463ee0b2
LW		 148}
149
76e3520e 150STATIC void
cea2e8a9 151S_visit(pTHX_ SVFUNC_t f)
8990e307 152{
4633a7c4 153 SV* sva;
8990e307
LW		 154 SV* sv;
155 register SV* svend;
156
3280af22 157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
4633a7c4 158 svend = &sva[SvREFCNT(sva)];
4561caa4
CS		 159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
51371543 161 (FCALL)(aTHXo_ sv);
8990e307
LW		 162 }
163 }
164}
165
166void
864dbfa3 167Perl_sv_report_used(pTHX)
4561caa4 168{
0b94c7bb 169 visit(do_report_used);
4561caa4
CS		 170}
171
4561caa4 172void
864dbfa3 173Perl_sv_clean_objs(pTHX)
4561caa4 174{
3280af22 175 PL_in_clean_objs = TRUE;
0b94c7bb 176 visit(do_clean_objs);
4561caa4 177#ifndef DISABLE_DESTRUCTOR_KLUDGE
2d0f3c12 178 /* some barnacles may yet remain, clinging to typeglobs */
0b94c7bb 179 visit(do_clean_named_objs);
4561caa4 180#endif
3280af22 181 PL_in_clean_objs = FALSE;
4561caa4
CS		 182}
183
8990e307 184void
864dbfa3 185Perl_sv_clean_all(pTHX)
8990e307 186{
3280af22 187 PL_in_clean_all = TRUE;
0b94c7bb 188 visit(do_clean_all);
3280af22 189 PL_in_clean_all = FALSE;
8990e307 190}
463ee0b2 191
4633a7c4 192void
864dbfa3 193Perl_sv_free_arenas(pTHX)
4633a7c4
LW		 194{
195 SV* sva;
196 SV* svanext;
612f20c3 197 XPV *arena, *arenanext;
4633a7c4
LW		 198
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
201
3280af22 202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
4633a7c4
LW		 203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
206
207 if (!SvFAKE(sva))
1edc1566 208 Safefree((void *)sva);
4633a7c4 209 }
5f05dabc 210
612f20c3
GS		 211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
213 Safefree(arena);
214 }
215 PL_xiv_arenaroot = 0;
216
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
219 Safefree(arena);
220 }
221 PL_xnv_arenaroot = 0;
222
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
225 Safefree(arena);
226 }
227 PL_xrv_arenaroot = 0;
228
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
231 Safefree(arena);
232 }
233 PL_xpv_arenaroot = 0;
234
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
237 Safefree(arena);
238 }
239 PL_xpviv_arenaroot = 0;
240
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
243 Safefree(arena);
244 }
245 PL_xpvnv_arenaroot = 0;
246
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
249 Safefree(arena);
250 }
251 PL_xpvcv_arenaroot = 0;
252
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
255 Safefree(arena);
256 }
257 PL_xpvav_arenaroot = 0;
258
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
261 Safefree(arena);
262 }
263 PL_xpvhv_arenaroot = 0;
264
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
267 Safefree(arena);
268 }
269 PL_xpvmg_arenaroot = 0;
270
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
273 Safefree(arena);
274 }
275 PL_xpvlv_arenaroot = 0;
276
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
279 Safefree(arena);
280 }
281 PL_xpvbm_arenaroot = 0;
282
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
285 Safefree(arena);
286 }
287 PL_he_arenaroot = 0;
288
3280af22
NIS		 289 if (PL_nice_chunk)
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
293 PL_sv_arenaroot = 0;
294 PL_sv_root = 0;
4633a7c4
LW		 295}
296
1d7c1841
GS		 297void
298Perl_report_uninit(pTHX)
299{
300 if (PL_op)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
303 else
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
305}
306
76e3520e 307STATIC XPVIV*
cea2e8a9 308S_new_xiv(pTHX)
463ee0b2 309{
ea7c11a3 310 IV* xiv;
cbe51380
GS		 311 LOCK_SV_MUTEX;
312 if (!PL_xiv_root)
313 more_xiv();
314 xiv = PL_xiv_root;
315 /*
316 * See comment in more_xiv() -- RAM.
317 */
318 PL_xiv_root = *(IV**)xiv;
319 UNLOCK_SV_MUTEX;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
463ee0b2
LW		 321}
322
76e3520e 323STATIC void
cea2e8a9 324S_del_xiv(pTHX_ XPVIV *p)
463ee0b2 325{
23e6a22f 326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
cbe51380 327 LOCK_SV_MUTEX;
3280af22
NIS		 328 *(IV**)xiv = PL_xiv_root;
329 PL_xiv_root = xiv;
cbe51380 330 UNLOCK_SV_MUTEX;
463ee0b2
LW		 331}
332
cbe51380 333STATIC void
cea2e8a9 334S_more_xiv(pTHX)
463ee0b2 335{
ea7c11a3
SM		 336 register IV* xiv;
337 register IV* xivend;
8c52afec
IZ		 338 XPV* ptr;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
3280af22
NIS		 340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
a0d0e21e 342
ea7c11a3
SM		 343 xiv = (IV*) ptr;
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
3280af22 346 PL_xiv_root = xiv;
463ee0b2 347 while (xiv < xivend) {
ea7c11a3 348 *(IV**)xiv = (IV *)(xiv + 1);
463ee0b2
LW		 349 xiv++;
350 }
ea7c11a3 351 *(IV**)xiv = 0;
463ee0b2
LW		 352}
353
76e3520e 354STATIC XPVNV*
cea2e8a9 355S_new_xnv(pTHX)
463ee0b2 356{
65202027 357 NV* xnv;
cbe51380
GS		 358 LOCK_SV_MUTEX;
359 if (!PL_xnv_root)
360 more_xnv();
361 xnv = PL_xnv_root;
65202027 362 PL_xnv_root = *(NV**)xnv;
cbe51380
GS		 363 UNLOCK_SV_MUTEX;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
463ee0b2
LW		 365}
366
76e3520e 367STATIC void
cea2e8a9 368S_del_xnv(pTHX_ XPVNV *p)
463ee0b2 369{
65202027 370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
cbe51380 371 LOCK_SV_MUTEX;
65202027 372 *(NV**)xnv = PL_xnv_root;
3280af22 373 PL_xnv_root = xnv;
cbe51380 374 UNLOCK_SV_MUTEX;
463ee0b2
LW		 375}
376
cbe51380 377STATIC void
cea2e8a9 378S_more_xnv(pTHX)
463ee0b2 379{
65202027
DS		 380 register NV* xnv;
381 register NV* xnvend;
612f20c3
GS		 382 XPV *ptr;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
386
387 xnv = (NV*) ptr;
65202027
DS		 388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
3280af22 390 PL_xnv_root = xnv;
463ee0b2 391 while (xnv < xnvend) {
65202027 392 *(NV**)xnv = (NV*)(xnv + 1);
463ee0b2
LW		 393 xnv++;
394 }
65202027 395 *(NV**)xnv = 0;
463ee0b2
LW		 396}
397
76e3520e 398STATIC XRV*
cea2e8a9 399S_new_xrv(pTHX)
ed6116ce
LW		 400{
401 XRV* xrv;
cbe51380
GS		 402 LOCK_SV_MUTEX;
403 if (!PL_xrv_root)
404 more_xrv();
405 xrv = PL_xrv_root;
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
407 UNLOCK_SV_MUTEX;
408 return xrv;
ed6116ce
LW		 409}
410
76e3520e 411STATIC void
cea2e8a9 412S_del_xrv(pTHX_ XRV *p)
ed6116ce 413{
cbe51380 414 LOCK_SV_MUTEX;
3280af22
NIS		 415 p->xrv_rv = (SV*)PL_xrv_root;
416 PL_xrv_root = p;
cbe51380 417 UNLOCK_SV_MUTEX;
ed6116ce
LW		 418}
419
cbe51380 420STATIC void
cea2e8a9 421S_more_xrv(pTHX)
ed6116ce 422{
ed6116ce
LW		 423 register XRV* xrv;
424 register XRV* xrvend;
612f20c3
GS		 425 XPV *ptr;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
429
430 xrv = (XRV*) ptr;
ed6116ce 431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
612f20c3
GS		 432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
433 PL_xrv_root = xrv;
ed6116ce
LW		 434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
436 xrv++;
437 }
438 xrv->xrv_rv = 0;
ed6116ce
LW		 439}
440
76e3520e 441STATIC XPV*
cea2e8a9 442S_new_xpv(pTHX)
463ee0b2
LW		 443{
444 XPV* xpv;
cbe51380
GS		 445 LOCK_SV_MUTEX;
446 if (!PL_xpv_root)
447 more_xpv();
448 xpv = PL_xpv_root;
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
450 UNLOCK_SV_MUTEX;
451 return xpv;
463ee0b2
LW		 452}
453
76e3520e 454STATIC void
cea2e8a9 455S_del_xpv(pTHX_ XPV *p)
463ee0b2 456{
cbe51380 457 LOCK_SV_MUTEX;
3280af22
NIS		 458 p->xpv_pv = (char*)PL_xpv_root;
459 PL_xpv_root = p;
cbe51380 460 UNLOCK_SV_MUTEX;
463ee0b2
LW		 461}
462
cbe51380 463STATIC void
cea2e8a9 464S_more_xpv(pTHX)
463ee0b2 465{
463ee0b2
LW		 466 register XPV* xpv;
467 register XPV* xpvend;
612f20c3
GS		 468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
471
463ee0b2 472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
612f20c3 473 PL_xpv_root = ++xpv;
463ee0b2
LW		 474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
476 xpv++;
477 }
478 xpv->xpv_pv = 0;
463ee0b2
LW		 479}
480
932e9ff9
VB		 481STATIC XPVIV*
482S_new_xpviv(pTHX)
483{
484 XPVIV* xpviv;
485 LOCK_SV_MUTEX;
486 if (!PL_xpviv_root)
487 more_xpviv();
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
490 UNLOCK_SV_MUTEX;
491 return xpviv;
492}
493
494STATIC void
495S_del_xpviv(pTHX_ XPVIV *p)
496{
497 LOCK_SV_MUTEX;
498 p->xpv_pv = (char*)PL_xpviv_root;
499 PL_xpviv_root = p;
500 UNLOCK_SV_MUTEX;
501}
502
932e9ff9
VB		 503STATIC void
504S_more_xpviv(pTHX)
505{
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
612f20c3
GS		 508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
511
932e9ff9 512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
612f20c3 513 PL_xpviv_root = ++xpviv;
932e9ff9
VB		 514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
516 xpviv++;
517 }
518 xpviv->xpv_pv = 0;
519}
520
932e9ff9
VB		 521STATIC XPVNV*
522S_new_xpvnv(pTHX)
523{
524 XPVNV* xpvnv;
525 LOCK_SV_MUTEX;
526 if (!PL_xpvnv_root)
527 more_xpvnv();
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
530 UNLOCK_SV_MUTEX;
531 return xpvnv;
532}
533
534STATIC void
535S_del_xpvnv(pTHX_ XPVNV *p)
536{
537 LOCK_SV_MUTEX;
538 p->xpv_pv = (char*)PL_xpvnv_root;
539 PL_xpvnv_root = p;
540 UNLOCK_SV_MUTEX;
541}
542
932e9ff9
VB		 543STATIC void
544S_more_xpvnv(pTHX)
545{
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
612f20c3
GS		 548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
551
932e9ff9 552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
612f20c3 553 PL_xpvnv_root = ++xpvnv;
932e9ff9
VB		 554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
556 xpvnv++;
557 }
558 xpvnv->xpv_pv = 0;
559}
560
932e9ff9
VB		 561STATIC XPVCV*
562S_new_xpvcv(pTHX)
563{
564 XPVCV* xpvcv;
565 LOCK_SV_MUTEX;
566 if (!PL_xpvcv_root)
567 more_xpvcv();
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
570 UNLOCK_SV_MUTEX;
571 return xpvcv;
572}
573
574STATIC void
575S_del_xpvcv(pTHX_ XPVCV *p)
576{
577 LOCK_SV_MUTEX;
578 p->xpv_pv = (char*)PL_xpvcv_root;
579 PL_xpvcv_root = p;
580 UNLOCK_SV_MUTEX;
581}
582
932e9ff9
VB		 583STATIC void
584S_more_xpvcv(pTHX)
585{
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
612f20c3
GS		 588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
591
932e9ff9 592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
612f20c3 593 PL_xpvcv_root = ++xpvcv;
932e9ff9
VB		 594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
596 xpvcv++;
597 }
598 xpvcv->xpv_pv = 0;
599}
600
932e9ff9
VB		 601STATIC XPVAV*
602S_new_xpvav(pTHX)
603{
604 XPVAV* xpvav;
605 LOCK_SV_MUTEX;
606 if (!PL_xpvav_root)
607 more_xpvav();
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
610 UNLOCK_SV_MUTEX;
611 return xpvav;
612}
613
614STATIC void
615S_del_xpvav(pTHX_ XPVAV *p)
616{
617 LOCK_SV_MUTEX;
618 p->xav_array = (char*)PL_xpvav_root;
619 PL_xpvav_root = p;
620 UNLOCK_SV_MUTEX;
621}
622
932e9ff9
VB		 623STATIC void
624S_more_xpvav(pTHX)
625{
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
612f20c3
GS		 628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
631
932e9ff9 632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
612f20c3 633 PL_xpvav_root = ++xpvav;
932e9ff9
VB		 634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
636 xpvav++;
637 }
638 xpvav->xav_array = 0;
639}
640
932e9ff9
VB		 641STATIC XPVHV*
642S_new_xpvhv(pTHX)
643{
644 XPVHV* xpvhv;
645 LOCK_SV_MUTEX;
646 if (!PL_xpvhv_root)
647 more_xpvhv();
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
650 UNLOCK_SV_MUTEX;
651 return xpvhv;
652}
653
654STATIC void
655S_del_xpvhv(pTHX_ XPVHV *p)
656{
657 LOCK_SV_MUTEX;
658 p->xhv_array = (char*)PL_xpvhv_root;
659 PL_xpvhv_root = p;
660 UNLOCK_SV_MUTEX;
661}
662
932e9ff9
VB		 663STATIC void
664S_more_xpvhv(pTHX)
665{
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
612f20c3
GS		 668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
671
932e9ff9 672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
612f20c3 673 PL_xpvhv_root = ++xpvhv;
932e9ff9
VB		 674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
676 xpvhv++;
677 }
678 xpvhv->xhv_array = 0;
679}
680
932e9ff9
VB		 681STATIC XPVMG*
682S_new_xpvmg(pTHX)
683{
684 XPVMG* xpvmg;
685 LOCK_SV_MUTEX;
686 if (!PL_xpvmg_root)
687 more_xpvmg();
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
690 UNLOCK_SV_MUTEX;
691 return xpvmg;
692}
693
694STATIC void
695S_del_xpvmg(pTHX_ XPVMG *p)
696{
697 LOCK_SV_MUTEX;
698 p->xpv_pv = (char*)PL_xpvmg_root;
699 PL_xpvmg_root = p;
700 UNLOCK_SV_MUTEX;
701}
702
932e9ff9
VB		 703STATIC void
704S_more_xpvmg(pTHX)
705{
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
612f20c3
GS		 708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
711
932e9ff9 712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
612f20c3 713 PL_xpvmg_root = ++xpvmg;
932e9ff9
VB		 714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
716 xpvmg++;
717 }
718 xpvmg->xpv_pv = 0;
719}
720
932e9ff9
VB		 721STATIC XPVLV*
722S_new_xpvlv(pTHX)
723{
724 XPVLV* xpvlv;
725 LOCK_SV_MUTEX;
726 if (!PL_xpvlv_root)
727 more_xpvlv();
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
730 UNLOCK_SV_MUTEX;
731 return xpvlv;
732}
733
734STATIC void
735S_del_xpvlv(pTHX_ XPVLV *p)
736{
737 LOCK_SV_MUTEX;
738 p->xpv_pv = (char*)PL_xpvlv_root;
739 PL_xpvlv_root = p;
740 UNLOCK_SV_MUTEX;
741}
742
932e9ff9
VB		 743STATIC void
744S_more_xpvlv(pTHX)
745{
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
612f20c3
GS		 748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
751
932e9ff9 752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
612f20c3 753 PL_xpvlv_root = ++xpvlv;
932e9ff9
VB		 754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
756 xpvlv++;
757 }
758 xpvlv->xpv_pv = 0;
759}
760
932e9ff9
VB		 761STATIC XPVBM*
762S_new_xpvbm(pTHX)
763{
764 XPVBM* xpvbm;
765 LOCK_SV_MUTEX;
766 if (!PL_xpvbm_root)
767 more_xpvbm();
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
770 UNLOCK_SV_MUTEX;
771 return xpvbm;
772}
773
774STATIC void
775S_del_xpvbm(pTHX_ XPVBM *p)
776{
777 LOCK_SV_MUTEX;
778 p->xpv_pv = (char*)PL_xpvbm_root;
779 PL_xpvbm_root = p;
780 UNLOCK_SV_MUTEX;
781}
782
932e9ff9
VB		 783STATIC void
784S_more_xpvbm(pTHX)
785{
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
612f20c3
GS		 788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
791
932e9ff9 792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
612f20c3 793 PL_xpvbm_root = ++xpvbm;
932e9ff9
VB		 794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
796 xpvbm++;
797 }
798 xpvbm->xpv_pv = 0;
799}
800
d33b2eba
GS		 801#ifdef LEAKTEST
802# define my_safemalloc(s) (void*)safexmalloc(717,s)
803# define my_safefree(p) safexfree((char*)p)
804#else
805# define my_safemalloc(s) (void*)safemalloc(s)
806# define my_safefree(p) safefree((char*)p)
807#endif
463ee0b2 808
d33b2eba 809#ifdef PURIFY
463ee0b2 810
d33b2eba
GS		 811#define new_XIV() my_safemalloc(sizeof(XPVIV))
812#define del_XIV(p) my_safefree(p)
ed6116ce 813
d33b2eba
GS		 814#define new_XNV() my_safemalloc(sizeof(XPVNV))
815#define del_XNV(p) my_safefree(p)
463ee0b2 816
d33b2eba
GS		 817#define new_XRV() my_safemalloc(sizeof(XRV))
818#define del_XRV(p) my_safefree(p)
8c52afec 819
d33b2eba
GS		 820#define new_XPV() my_safemalloc(sizeof(XPV))
821#define del_XPV(p) my_safefree(p)
9b94d1dd 822
d33b2eba
GS		 823#define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824#define del_XPVIV(p) my_safefree(p)
932e9ff9 825
d33b2eba
GS		 826#define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827#define del_XPVNV(p) my_safefree(p)
932e9ff9 828
d33b2eba
GS		 829#define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830#define del_XPVCV(p) my_safefree(p)
932e9ff9 831
d33b2eba
GS		 832#define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833#define del_XPVAV(p) my_safefree(p)
834
835#define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836#define del_XPVHV(p) my_safefree(p)
1c846c1f 837
d33b2eba
GS		 838#define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839#define del_XPVMG(p) my_safefree(p)
840
841#define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842#define del_XPVLV(p) my_safefree(p)
843
844#define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845#define del_XPVBM(p) my_safefree(p)
846
847#else /* !PURIFY */
848
849#define new_XIV() (void*)new_xiv()
850#define del_XIV(p) del_xiv((XPVIV*) p)
851
852#define new_XNV() (void*)new_xnv()
853#define del_XNV(p) del_xnv((XPVNV*) p)
9b94d1dd 854
d33b2eba
GS		 855#define new_XRV() (void*)new_xrv()
856#define del_XRV(p) del_xrv((XRV*) p)
9b94d1dd 857
d33b2eba
GS		 858#define new_XPV() (void*)new_xpv()
859#define del_XPV(p) del_xpv((XPV *)p)
860
861#define new_XPVIV() (void*)new_xpviv()
862#define del_XPVIV(p) del_xpviv((XPVIV *)p)
863
864#define new_XPVNV() (void*)new_xpvnv()
865#define del_XPVNV(p) del_xpvnv((XPVNV *)p)
866
867#define new_XPVCV() (void*)new_xpvcv()
868#define del_XPVCV(p) del_xpvcv((XPVCV *)p)
869
870#define new_XPVAV() (void*)new_xpvav()
871#define del_XPVAV(p) del_xpvav((XPVAV *)p)
872
873#define new_XPVHV() (void*)new_xpvhv()
874#define del_XPVHV(p) del_xpvhv((XPVHV *)p)
1c846c1f 875
d33b2eba
GS		 876#define new_XPVMG() (void*)new_xpvmg()
877#define del_XPVMG(p) del_xpvmg((XPVMG *)p)
878
879#define new_XPVLV() (void*)new_xpvlv()
880#define del_XPVLV(p) del_xpvlv((XPVLV *)p)
881
882#define new_XPVBM() (void*)new_xpvbm()
883#define del_XPVBM(p) del_xpvbm((XPVBM *)p)
884
885#endif /* PURIFY */
9b94d1dd 886
d33b2eba
GS		 887#define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888#define del_XPVGV(p) my_safefree(p)
1c846c1f 889
d33b2eba
GS		 890#define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891#define del_XPVFM(p) my_safefree(p)
1c846c1f 892
d33b2eba
GS		 893#define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894#define del_XPVIO(p) my_safefree(p)
8990e307 895
954c1994
GS		 896/*
897=for apidoc sv_upgrade
898
899Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
900C<svtype>.
901
902=cut
903*/
904
79072805 905bool
864dbfa3 906Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
79072805
LW		 907{
908 char* pv;
909 U32 cur;
910 U32 len;
a0d0e21e 911 IV iv;
65202027 912 NV nv;
79072805
LW		 913 MAGIC* magic;
914 HV* stash;
915
f130fd45
NIS		 916 if (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
917 sv_force_normal(sv);
918 }
919
79072805
LW		 920 if (SvTYPE(sv) == mt)
921 return TRUE;
922
a5f75d66
AD		 923 if (mt < SVt_PVIV)
924 (void)SvOOK_off(sv);
925
79072805
LW		 926 switch (SvTYPE(sv)) {
927 case SVt_NULL:
928 pv = 0;
929 cur = 0;
930 len = 0;
931 iv = 0;
932 nv = 0.0;
933 magic = 0;
934 stash = 0;
935 break;
79072805
LW		 936 case SVt_IV:
937 pv = 0;
938 cur = 0;
939 len = 0;
463ee0b2 940 iv = SvIVX(sv);
65202027 941 nv = (NV)SvIVX(sv);
79072805
LW		 942 del_XIV(SvANY(sv));
943 magic = 0;
944 stash = 0;
ed6116ce 945 if (mt == SVt_NV)
463ee0b2 946 mt = SVt_PVNV;
ed6116ce
LW		 947 else if (mt < SVt_PVIV)
948 mt = SVt_PVIV;
79072805
LW		 949 break;
950 case SVt_NV:
951 pv = 0;
952 cur = 0;
953 len = 0;
463ee0b2 954 nv = SvNVX(sv);
1bd302c3 955 iv = I_V(nv);
79072805
LW		 956 magic = 0;
957 stash = 0;
958 del_XNV(SvANY(sv));
959 SvANY(sv) = 0;
ed6116ce 960 if (mt < SVt_PVNV)
79072805
LW		 961 mt = SVt_PVNV;
962 break;
ed6116ce
LW		 963 case SVt_RV:
964 pv = (char*)SvRV(sv);
965 cur = 0;
966 len = 0;
56431972
RB		 967 iv = PTR2IV(pv);
968 nv = PTR2NV(pv);
ed6116ce
LW		 969 del_XRV(SvANY(sv));
970 magic = 0;
971 stash = 0;
972 break;
79072805 973 case SVt_PV:
463ee0b2 974 pv = SvPVX(sv);
79072805
LW		 975 cur = SvCUR(sv);
976 len = SvLEN(sv);
977 iv = 0;
978 nv = 0.0;
979 magic = 0;
980 stash = 0;
981 del_XPV(SvANY(sv));
748a9306
LW		 982 if (mt <= SVt_IV)
983 mt = SVt_PVIV;
984 else if (mt == SVt_NV)
985 mt = SVt_PVNV;
79072805
LW		 986 break;
987 case SVt_PVIV:
463ee0b2 988 pv = SvPVX(sv);
79072805
LW		 989 cur = SvCUR(sv);
990 len = SvLEN(sv);
463ee0b2 991 iv = SvIVX(sv);
79072805
LW		 992 nv = 0.0;
993 magic = 0;
994 stash = 0;
995 del_XPVIV(SvANY(sv));
996 break;
997 case SVt_PVNV:
463ee0b2 998 pv = SvPVX(sv);
79072805
LW		 999 cur = SvCUR(sv);
1000 len = SvLEN(sv);
463ee0b2
LW		 1001 iv = SvIVX(sv);
1002 nv = SvNVX(sv);
79072805
LW		 1003 magic = 0;
1004 stash = 0;
1005 del_XPVNV(SvANY(sv));
1006 break;
1007 case SVt_PVMG:
463ee0b2 1008 pv = SvPVX(sv);
79072805
LW		 1009 cur = SvCUR(sv);
1010 len = SvLEN(sv);
463ee0b2
LW		 1011 iv = SvIVX(sv);
1012 nv = SvNVX(sv);
79072805
LW		 1013 magic = SvMAGIC(sv);
1014 stash = SvSTASH(sv);
1015 del_XPVMG(SvANY(sv));
1016 break;
1017 default:
cea2e8a9 1018 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
79072805
LW		 1019 }
1020
1021 switch (mt) {
1022 case SVt_NULL:
cea2e8a9 1023 Perl_croak(aTHX_ "Can't upgrade to undef");
79072805
LW		 1024 case SVt_IV:
1025 SvANY(sv) = new_XIV();
463ee0b2 1026 SvIVX(sv) = iv;
79072805
LW		 1027 break;
1028 case SVt_NV:
1029 SvANY(sv) = new_XNV();
463ee0b2 1030 SvNVX(sv) = nv;
79072805 1031 break;
ed6116ce
LW		 1032 case SVt_RV:
1033 SvANY(sv) = new_XRV();
1034 SvRV(sv) = (SV*)pv;
ed6116ce 1035 break;
79072805
LW		 1036 case SVt_PV:
1037 SvANY(sv) = new_XPV();
463ee0b2 1038 SvPVX(sv) = pv;
79072805
LW		 1039 SvCUR(sv) = cur;
1040 SvLEN(sv) = len;
1041 break;
1042 case SVt_PVIV:
1043 SvANY(sv) = new_XPVIV();
463ee0b2 1044 SvPVX(sv) = pv;
79072805
LW		 1045 SvCUR(sv) = cur;
1046 SvLEN(sv) = len;
463ee0b2 1047 SvIVX(sv) = iv;
79072805 1048 if (SvNIOK(sv))
a0d0e21e 1049 (void)SvIOK_on(sv);
79072805
LW		 1050 SvNOK_off(sv);
1051 break;
1052 case SVt_PVNV:
1053 SvANY(sv) = new_XPVNV();
463ee0b2 1054 SvPVX(sv) = pv;
79072805
LW		 1055 SvCUR(sv) = cur;
1056 SvLEN(sv) = len;
463ee0b2
LW		 1057 SvIVX(sv) = iv;
1058 SvNVX(sv) = nv;
79072805
LW		 1059 break;
1060 case SVt_PVMG:
1061 SvANY(sv) = new_XPVMG();
463ee0b2 1062 SvPVX(sv) = pv;
79072805
LW		 1063 SvCUR(sv) = cur;
1064 SvLEN(sv) = len;
463ee0b2
LW		 1065 SvIVX(sv) = iv;
1066 SvNVX(sv) = nv;
79072805
LW		 1067 SvMAGIC(sv) = magic;
1068 SvSTASH(sv) = stash;
1069 break;
1070 case SVt_PVLV:
1071 SvANY(sv) = new_XPVLV();
463ee0b2 1072 SvPVX(sv) = pv;
79072805
LW		 1073 SvCUR(sv) = cur;
1074 SvLEN(sv) = len;
463ee0b2
LW		 1075 SvIVX(sv) = iv;
1076 SvNVX(sv) = nv;
79072805
LW		 1077 SvMAGIC(sv) = magic;
1078 SvSTASH(sv) = stash;
1079 LvTARGOFF(sv) = 0;
1080 LvTARGLEN(sv) = 0;
1081 LvTARG(sv) = 0;
1082 LvTYPE(sv) = 0;
1083 break;
1084 case SVt_PVAV:
1085 SvANY(sv) = new_XPVAV();
463ee0b2
LW		 1086 if (pv)
1087 Safefree(pv);
2304df62 1088 SvPVX(sv) = 0;
d1bf51dd 1089 AvMAX(sv) = -1;
93965878 1090 AvFILLp(sv) = -1;
463ee0b2
LW		 1091 SvIVX(sv) = 0;
1092 SvNVX(sv) = 0.0;
1093 SvMAGIC(sv) = magic;
1094 SvSTASH(sv) = stash;
1095 AvALLOC(sv) = 0;
79072805
LW		 1096 AvARYLEN(sv) = 0;
1097 AvFLAGS(sv) = 0;
1098 break;
1099 case SVt_PVHV:
1100 SvANY(sv) = new_XPVHV();
463ee0b2
LW		 1101 if (pv)
1102 Safefree(pv);
1103 SvPVX(sv) = 0;
1104 HvFILL(sv) = 0;
1105 HvMAX(sv) = 0;
1106 HvKEYS(sv) = 0;
1107 SvNVX(sv) = 0.0;
79072805
LW		 1108 SvMAGIC(sv) = magic;
1109 SvSTASH(sv) = stash;
79072805
LW		 1110 HvRITER(sv) = 0;
1111 HvEITER(sv) = 0;
1112 HvPMROOT(sv) = 0;
1113 HvNAME(sv) = 0;
79072805
LW		 1114 break;
1115 case SVt_PVCV:
1116 SvANY(sv) = new_XPVCV();
748a9306 1117 Zero(SvANY(sv), 1, XPVCV);
463ee0b2 1118 SvPVX(sv) = pv;
79072805
LW		 1119 SvCUR(sv) = cur;
1120 SvLEN(sv) = len;
463ee0b2
LW		 1121 SvIVX(sv) = iv;
1122 SvNVX(sv) = nv;
79072805
LW		 1123 SvMAGIC(sv) = magic;
1124 SvSTASH(sv) = stash;
79072805
LW		 1125 break;
1126 case SVt_PVGV:
1127 SvANY(sv) = new_XPVGV();
463ee0b2 1128 SvPVX(sv) = pv;
79072805
LW		 1129 SvCUR(sv) = cur;
1130 SvLEN(sv) = len;
463ee0b2
LW		 1131 SvIVX(sv) = iv;
1132 SvNVX(sv) = nv;
79072805
LW		 1133 SvMAGIC(sv) = magic;
1134 SvSTASH(sv) = stash;
93a17b20 1135 GvGP(sv) = 0;
79072805
LW		 1136 GvNAME(sv) = 0;
1137 GvNAMELEN(sv) = 0;
1138 GvSTASH(sv) = 0;
a5f75d66 1139 GvFLAGS(sv) = 0;
79072805
LW		 1140 break;
1141 case SVt_PVBM:
1142 SvANY(sv) = new_XPVBM();
463ee0b2 1143 SvPVX(sv) = pv;
79072805
LW		 1144 SvCUR(sv) = cur;
1145 SvLEN(sv) = len;
463ee0b2
LW		 1146 SvIVX(sv) = iv;
1147 SvNVX(sv) = nv;
79072805
LW		 1148 SvMAGIC(sv) = magic;
1149 SvSTASH(sv) = stash;
1150 BmRARE(sv) = 0;
1151 BmUSEFUL(sv) = 0;
1152 BmPREVIOUS(sv) = 0;
1153 break;
1154 case SVt_PVFM:
1155 SvANY(sv) = new_XPVFM();
748a9306 1156 Zero(SvANY(sv), 1, XPVFM);
463ee0b2 1157 SvPVX(sv) = pv;
79072805
LW		 1158 SvCUR(sv) = cur;
1159 SvLEN(sv) = len;
463ee0b2
LW		 1160 SvIVX(sv) = iv;
1161 SvNVX(sv) = nv;
79072805
LW		 1162 SvMAGIC(sv) = magic;
1163 SvSTASH(sv) = stash;
79072805 1164 break;
8990e307
LW		 1165 case SVt_PVIO:
1166 SvANY(sv) = new_XPVIO();
748a9306 1167 Zero(SvANY(sv), 1, XPVIO);
8990e307
LW		 1168 SvPVX(sv) = pv;
1169 SvCUR(sv) = cur;
1170 SvLEN(sv) = len;
1171 SvIVX(sv) = iv;
1172 SvNVX(sv) = nv;
1173 SvMAGIC(sv) = magic;
1174 SvSTASH(sv) = stash;
85e6fe83 1175 IoPAGE_LEN(sv) = 60;
8990e307
LW		 1176 break;
1177 }
1178 SvFLAGS(sv) &= ~SVTYPEMASK;
1179 SvFLAGS(sv) |= mt;
79072805
LW		 1180 return TRUE;
1181}
1182
79072805 1183int
864dbfa3 1184Perl_sv_backoff(pTHX_ register SV *sv)
79072805
LW		 1185{
1186 assert(SvOOK(sv));
463ee0b2
LW		 1187 if (SvIVX(sv)) {
1188 char *s = SvPVX(sv);
1189 SvLEN(sv) += SvIVX(sv);
1190 SvPVX(sv) -= SvIVX(sv);
79072805 1191 SvIV_set(sv, 0);
463ee0b2 1192 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
79072805
LW		 1193 }
1194 SvFLAGS(sv) &= ~SVf_OOK;
a0d0e21e 1195 return 0;
79072805
LW		 1196}
1197
954c1994
GS		 1198/*
1199=for apidoc sv_grow
1200
1201Expands the character buffer in the SV. This will use C<sv_unref> and will
1202upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1203Use C<SvGROW>.
1204
1205=cut
1206*/
1207
79072805 1208char *
864dbfa3 1209Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
79072805
LW		 1210{
1211 register char *s;
1212
55497cff 1213#ifdef HAS_64K_LIMIT
79072805 1214 if (newlen >= 0x10000) {
1d7c1841
GS		 1215 PerlIO_printf(Perl_debug_log,
1216 "Allocation too large: %"UVxf"\n", (UV)newlen);
79072805
LW		 1217 my_exit(1);
1218 }
55497cff 1219#endif /* HAS_64K_LIMIT */
a0d0e21e
LW		 1220 if (SvROK(sv))
1221 sv_unref(sv);
79072805
LW		 1222 if (SvTYPE(sv) < SVt_PV) {
1223 sv_upgrade(sv, SVt_PV);
463ee0b2 1224 s = SvPVX(sv);
79072805
LW		 1225 }
1226 else if (SvOOK(sv)) { /* pv is offset? */
1227 sv_backoff(sv);
463ee0b2 1228 s = SvPVX(sv);
79072805
LW		 1229 if (newlen > SvLEN(sv))
1230 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
c6f8c383
GA		 1231#ifdef HAS_64K_LIMIT
1232 if (newlen >= 0x10000)
1233 newlen = 0xFFFF;
1234#endif
79072805
LW		 1235 }
1236 else
463ee0b2 1237 s = SvPVX(sv);
79072805 1238 if (newlen > SvLEN(sv)) { /* need more room? */
8d6dde3e 1239 if (SvLEN(sv) && s) {
f5a32c7f 1240#if defined(MYMALLOC) && !defined(LEAKTEST)
8d6dde3e
IZ		 1241 STRLEN l = malloced_size((void*)SvPVX(sv));
1242 if (newlen <= l) {
1243 SvLEN_set(sv, l);
1244 return s;
1245 } else
c70c8a0a 1246#endif
79072805 1247 Renew(s,newlen,char);
8d6dde3e 1248 }
79072805
LW		 1249 else
1250 New(703,s,newlen,char);
1251 SvPV_set(sv, s);
1252 SvLEN_set(sv, newlen);
1253 }
1254 return s;
1255}
1256
954c1994
GS		 1257/*
1258=for apidoc sv_setiv
1259
1260Copies an integer into the given SV. Does not handle 'set' magic. See
1261C<sv_setiv_mg>.
1262
1263=cut
1264*/
1265
79072805 1266void
864dbfa3 1267Perl_sv_setiv(pTHX_ register SV *sv, IV i)
79072805 1268{
2213622d 1269 SV_CHECK_THINKFIRST(sv);
463ee0b2
LW		 1270 switch (SvTYPE(sv)) {
1271 case SVt_NULL:
79072805 1272 sv_upgrade(sv, SVt_IV);
463ee0b2
LW		 1273 break;
1274 case SVt_NV:
1275 sv_upgrade(sv, SVt_PVNV);
1276 break;
ed6116ce 1277 case SVt_RV:
463ee0b2 1278 case SVt_PV:
79072805 1279 sv_upgrade(sv, SVt_PVIV);
463ee0b2 1280 break;
a0d0e21e
LW		 1281
1282 case SVt_PVGV:
a0d0e21e
LW		 1283 case SVt_PVAV:
1284 case SVt_PVHV:
1285 case SVt_PVCV:
1286 case SVt_PVFM:
1287 case SVt_PVIO:
411caa50
JH		 1288 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1289 PL_op_desc[PL_op->op_type]);
463ee0b2 1290 }
a0d0e21e 1291 (void)SvIOK_only(sv); /* validate number */
a5f75d66 1292 SvIVX(sv) = i;
463ee0b2 1293 SvTAINT(sv);
79072805
LW		 1294}
1295
954c1994
GS		 1296/*
1297=for apidoc sv_setiv_mg
1298
1299Like C<sv_setiv>, but also handles 'set' magic.
1300
1301=cut
1302*/
1303
79072805 1304void
864dbfa3 1305Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
ef50df4b
GS		 1306{
1307 sv_setiv(sv,i);
1308 SvSETMAGIC(sv);
1309}
1310
954c1994
GS		 1311/*
1312=for apidoc sv_setuv
1313
1314Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1315See C<sv_setuv_mg>.
1316
1317=cut
1318*/
1319
ef50df4b 1320void
864dbfa3 1321Perl_sv_setuv(pTHX_ register SV *sv, UV u)
55497cff 1322{
55ada374
NC		 1323 /* With these two if statements:
1324 u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865
d460ef45 1325
55ada374
NC		 1326 without
1327 u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865
d460ef45 1328
55ada374
NC		 1329 If you wish to remove them, please benchmark to see what the effect is
1330 */
28e5dec8
JH		 1331 if (u <= (UV)IV_MAX) {
1332 sv_setiv(sv, (IV)u);
1333 return;
1334 }
25da4f38
IZ		 1335 sv_setiv(sv, 0);
1336 SvIsUV_on(sv);
1337 SvUVX(sv) = u;
55497cff 1338}
1339
954c1994
GS		 1340/*
1341=for apidoc sv_setuv_mg
1342
1343Like C<sv_setuv>, but also handles 'set' magic.
1344
1345=cut
1346*/
1347
55497cff 1348void
864dbfa3 1349Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
ef50df4b 1350{
55ada374
NC		 1351 /* With these two if statements:
1352 u=1.49 s=0.52 cu=72.49 cs=10.64 scripts=270 tests=20865
d460ef45 1353
55ada374
NC		 1354 without
1355 u=1.35 s=0.47 cu=73.45 cs=11.43 scripts=270 tests=20865
d460ef45 1356
55ada374
NC		 1357 If you wish to remove them, please benchmark to see what the effect is
1358 */
28e5dec8
JH		 1359 if (u <= (UV)IV_MAX) {
1360 sv_setiv(sv, (IV)u);
1361 } else {
1362 sv_setiv(sv, 0);
1363 SvIsUV_on(sv);
1364 sv_setuv(sv,u);
1365 }
ef50df4b
GS		 1366 SvSETMAGIC(sv);
1367}
1368
954c1994
GS		 1369/*
1370=for apidoc sv_setnv
1371
1372Copies a double into the given SV. Does not handle 'set' magic. See
1373C<sv_setnv_mg>.
1374
1375=cut
1376*/
1377
ef50df4b 1378void
65202027 1379Perl_sv_setnv(pTHX_ register SV *sv, NV num)
79072805 1380{
2213622d 1381 SV_CHECK_THINKFIRST(sv);
a0d0e21e
LW		 1382 switch (SvTYPE(sv)) {
1383 case SVt_NULL:
1384 case SVt_IV:
79072805 1385 sv_upgrade(sv, SVt_NV);
a0d0e21e 1386 break;
a0d0e21e
LW		 1387 case SVt_RV:
1388 case SVt_PV:
1389 case SVt_PVIV:
79072805 1390 sv_upgrade(sv, SVt_PVNV);
a0d0e21e 1391 break;
827b7e14 1392
a0d0e21e 1393 case SVt_PVGV:
a0d0e21e
LW		 1394 case SVt_PVAV:
1395 case SVt_PVHV:
1396 case SVt_PVCV:
1397 case SVt_PVFM:
1398 case SVt_PVIO:
411caa50
JH		 1399 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1400 PL_op_name[PL_op->op_type]);
79072805 1401 }
463ee0b2 1402 SvNVX(sv) = num;
a0d0e21e 1403 (void)SvNOK_only(sv); /* validate number */
463ee0b2 1404 SvTAINT(sv);
79072805
LW		 1405}
1406
954c1994
GS		 1407/*
1408=for apidoc sv_setnv_mg
1409
1410Like C<sv_setnv>, but also handles 'set' magic.
1411
1412=cut
1413*/
1414
ef50df4b 1415void
65202027 1416Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
ef50df4b
GS		 1417{
1418 sv_setnv(sv,num);
1419 SvSETMAGIC(sv);
1420}
1421
76e3520e 1422STATIC void
cea2e8a9 1423S_not_a_number(pTHX_ SV *sv)
a0d0e21e
LW		 1424{
1425 char tmpbuf[64];
1426 char *d = tmpbuf;
1427 char *s;
dc28f22b
GA		 1428 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1429 /* each *s can expand to 4 chars + "...\0",
1430 i.e. need room for 8 chars */
a0d0e21e 1431
dc28f22b 1432 for (s = SvPVX(sv); *s && d < limit; s++) {
bbce6d69 1433 int ch = *s & 0xFF;
1434 if (ch & 128 && !isPRINT_LC(ch)) {
a0d0e21e
LW		 1435 *d++ = 'M';
1436 *d++ = '-';
1437 ch &= 127;
1438 }
bbce6d69 1439 if (ch == '\n') {
1440 *d++ = '\\';
1441 *d++ = 'n';
1442 }
1443 else if (ch == '\r') {
1444 *d++ = '\\';
1445 *d++ = 'r';
1446 }
1447 else if (ch == '\f') {
1448 *d++ = '\\';
1449 *d++ = 'f';
1450 }
1451 else if (ch == '\\') {
1452 *d++ = '\\';
1453 *d++ = '\\';
1454 }
1455 else if (isPRINT_LC(ch))
a0d0e21e
LW		 1456 *d++ = ch;
1457 else {
1458 *d++ = '^';
bbce6d69 1459 *d++ = toCTRL(ch);
a0d0e21e
LW		 1460 }
1461 }
1462 if (*s) {
1463 *d++ = '.';
1464 *d++ = '.';
1465 *d++ = '.';
1466 }
1467 *d = '\0';
1468
533c011a 1469 if (PL_op)
42d38218
MS		 1470 Perl_warner(aTHX_ WARN_NUMERIC,
1471 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1472 PL_op_desc[PL_op->op_type]);
a0d0e21e 1473 else
42d38218
MS		 1474 Perl_warner(aTHX_ WARN_NUMERIC,
1475 "Argument \"%s\" isn't numeric", tmpbuf);
a0d0e21e
LW		 1476}
1477
28e5dec8
JH		 1478/* the number can be converted to integer with atol() or atoll() although */
1479#define IS_NUMBER_TO_INT_BY_ATOL 0x01 /* integer (may have decimals) */
1480#define IS_NUMBER_TO_INT_BY_STRTOL 0x02 /* it may exceed IV_MAX */
1481#define IS_NUMBER_TO_INT_BY_ATOF 0x04 /* seen something like 123e4 */
1482#define IS_NUMBER_LONGER_THAN_IV_MAX 0x08 /* more digits than IV_MAX */
1483#define IS_NUMBER_AS_LONG_AS_IV_MAX 0x10 /* may(be not) larger than IV_MAX */
1484#define IS_NUMBER_NOT_INT 0x20 /* seen a decimal point or e */
1485#define IS_NUMBER_NEG 0x40 /* seen a leading - */
1486#define IS_NUMBER_INFINITY 0x80 /* /^\s*-?Infinity\s*$/i */
25da4f38
IZ		 1487
1488/* Actually, ISO C leaves conversion of UV to IV undefined, but
1489 until proven guilty, assume that things are not that bad... */
1490
28e5dec8
JH		 1491/* As 64 bit platforms often have an NV that doesn't preserve all bits of
1492 an IV (an assumption perl has been based on to date) it becomes necessary
1493 to remove the assumption that the NV always carries enough precision to
1494 recreate the IV whenever needed, and that the NV is the canonical form.
1495 Instead, IV/UV and NV need to be given equal rights. So as to not lose
1496 precision as an side effect of conversion (which would lead to insanity
1497 and the dragon(s) in t/op/numconvert.t getting very angry) the intent is
1498 1) to distinguish between IV/UV/NV slots that have cached a valid
1499 conversion where precision was lost and IV/UV/NV slots that have a
1500 valid conversion which has lost no precision
1501 2) to ensure that if a numeric conversion to one form is request that
1502 would lose precision, the precise conversion (or differently
1503 imprecise conversion) is also performed and cached, to prevent
1504 requests for different numeric formats on the same SV causing
1505 lossy conversion chains. (lossless conversion chains are perfectly
1506 acceptable (still))
1507
1508
1509 flags are used:
1510 SvIOKp is true if the IV slot contains a valid value
1511 SvIOK is true only if the IV value is accurate (UV if SvIOK_UV true)
1512 SvNOKp is true if the NV slot contains a valid value
1513 SvNOK is true only if the NV value is accurate
1514
1515 so
1516 while converting from PV to NV check to see if converting that NV to an
1517 IV(or UV) would lose accuracy over a direct conversion from PV to
1518 IV(or UV). If it would, cache both conversions, return NV, but mark
1519 SV as IOK NOKp (ie not NOK).
1520
1521 while converting from PV to IV check to see if converting that IV to an
1522 NV would lose accuracy over a direct conversion from PV to NV. If it
1523 would, cache both conversions, flag similarly.
1524
1525 Before, the SV value "3.2" could become NV=3.2 IV=3 NOK, IOK quite
1526 correctly because if IV & NV were set NV *always* overruled.
1527 Now, "3.2" will become NV=3.2 IV=3 NOK, IOKp, because the flags meaning
1528 changes - now IV and NV together means that the two are interchangeable
1529 SvIVX == (IV) SvNVX && SvNVX == (NV) SvIVX;
d460ef45 1530
28e5dec8
JH		 1531 The benefit of this is operations such as pp_add know that if SvIOK is
1532 true for both left and right operands, then integer addition can be
1533 used instead of floating point. (for cases where the result won't
1534 overflow) Before, floating point was always used, which could lead to
1535 loss of precision compared with integer addition.
1536
1537 * making IV and NV equal status should make maths accurate on 64 bit
1538 platforms
1539 * may speed up maths somewhat if pp_add and friends start to use
1540 integers when possible instead of fp. (hopefully the overhead in
1541 looking for SvIOK and checking for overflow will not outweigh the
1542 fp to integer speedup)
1543 * will slow down integer operations (callers of SvIV) on "inaccurate"
1544 values, as the change from SvIOK to SvIOKp will cause a call into
1545 sv_2iv each time rather than a macro access direct to the IV slot
1546 * should speed up number->string conversion on integers as IV is
1547 favoured when IV and NV equally accurate
1548
1549 ####################################################################
1550 You had better be using SvIOK_notUV if you want an IV for arithmetic
1551 SvIOK is true if (IV or UV), so you might be getting (IV)SvUV
1552 SvUOK is true iff UV.
1553 ####################################################################
1554
1555 Your mileage will vary depending your CPUs relative fp to integer
1556 performance ratio.
1557*/
1558
1559#ifndef NV_PRESERVES_UV
1560#define IS_NUMBER_UNDERFLOW_IV 1
1561#define IS_NUMBER_UNDERFLOW_UV 2
1562#define IS_NUMBER_IV_AND_UV 2
1563#define IS_NUMBER_OVERFLOW_IV 4
1564#define IS_NUMBER_OVERFLOW_UV 5
1565/* Hopefully your optimiser will consider inlining these two functions. */
1566STATIC int
1567S_sv_2inuv_non_preserve (pTHX_ register SV *sv, I32 numtype) {
1568 NV nv = SvNVX(sv); /* Code simpler and had compiler problems if */
1569 UV nv_as_uv = U_V(nv); /* these are not in simple variables. */
159fae86 1570 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2inuv_non '%s', IV=0x%"UVxf" NV=%g inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), nv, (UV)numtype));
28e5dec8
JH		 1571 if (nv_as_uv <= (UV)IV_MAX) {
1572 (void)SvIOKp_on(sv);
1573 (void)SvNOKp_on(sv);
1574 /* Within suitable range to fit in an IV, atol won't overflow */
1575 /* XXX quite sure? Is that your final answer? not really, I'm
1576 trusting that nv_as_uv to round down if NV is (IV_MAX + 1) */
1577 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1578 if (numtype & IS_NUMBER_NOT_INT) {
1579 /* I believe that even if the original PV had decimals, they
1580 are lost beyond the limit of the FP precision.
1581 However, neither is canonical, so both only get p flags.
1582 NWC, 2000/11/25 */
1583 /* Both already have p flags, so do nothing */
1584 } else if (SvIVX(sv) == I_V(nv)) {
1585 SvNOK_on(sv);
1586 SvIOK_on(sv);
1587 } else {
1588 SvIOK_on(sv);
1589 /* It had no "." so it must be integer. assert (get in here from
1590 sv_2iv and sv_2uv only for ndef HAS_STRTOL and
1591 IS_NUMBER_AS_LONG_AS_IV_MAX) or my logic is faulty and all
1592 conversion routines need audit. */
1593 }
1594 return nv < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV;
1595 }
1596 /* between IV_MAX and NV(UV_MAX). Could be slightly> UV_MAX */
1597 (void)SvIOKp_on(sv);
1598 (void)SvNOKp_on(sv);
1599#ifdef HAS_STRTOUL
1600 {
1601 int save_errno = errno;
1602 errno = 0;
1603 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1604 if (errno == 0) {
1605 if (numtype & IS_NUMBER_NOT_INT) {
1606 /* UV and NV both imprecise. */
1607 SvIsUV_on(sv);
1608 } else if (SvUVX(sv) == nv_as_uv && SvUVX(sv) != UV_MAX) {
1609 SvNOK_on(sv);
1610 SvIOK_on(sv);
1611 SvIsUV_on(sv);
1612 } else {
1613 SvIOK_on(sv);
1614 SvIsUV_on(sv);
1615 }
1616 errno = save_errno;
1617 return IS_NUMBER_OVERFLOW_IV;
1618 }
1619 errno = save_errno;
1620 SvNOK_on(sv);
1621 /* Must have just overflowed UV, but not enough that an NV could spot
1622 this.. */
1623 return IS_NUMBER_OVERFLOW_UV;
1624 }
1625#else
1626 /* We've just lost integer precision, nothing we could do. */
1627 SvUVX(sv) = nv_as_uv;
159fae86 1628 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2niuv_non UV? '%s', UV=0x%"UVxf" NV=%g U_V(NV)=0x%"UVxf" inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), nv, nv_as_uv, (UV)numtype));
28e5dec8
JH		 1629 /* UV and NV slots equally valid only if we have casting symmetry. */
1630 if (numtype & IS_NUMBER_NOT_INT) {
1631 SvIsUV_on(sv);
1632 } else if (SvUVX(sv) == nv_as_uv && SvUVX(sv) != UV_MAX) {
1633 /* UV_MAX can cast up to NV (UV_MAX+1), that NV casts down to UV_MAX
1634 UV_MAX ought to be 0xFF...FFF which won't preserve (We only
1635 get to this point if NVs don't preserve UVs) */
1636 SvNOK_on(sv);
1637 SvIOK_on(sv);
1638 SvIsUV_on(sv);
1639 } else {
1640 /* As above, I believe UV at least as good as NV */
1641 SvIsUV_on(sv);
1642 }
1643#endif /* HAS_STRTOUL */
1644 return IS_NUMBER_OVERFLOW_IV;
1645}
1646
1647/* For sv_2nv these three cases are "SvNOK and don't bother casting" */
1648STATIC int
1649S_sv_2iuv_non_preserve (pTHX_ register SV *sv, I32 numtype)
1650{
159fae86 1651 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_2iuv_non '%s', IV=0x%"UVxf" NV=%g inttype=%"UVXf"\n", SvPVX(sv), SvIVX(sv), SvNVX(sv), (UV)numtype));
28e5dec8
JH		 1652 if (SvNVX(sv) < (NV)IV_MIN) {
1653 (void)SvIOKp_on(sv);
1654 (void)SvNOK_on(sv);
1655 SvIVX(sv) = IV_MIN;
1656 return IS_NUMBER_UNDERFLOW_IV;
1657 }
1658 if (SvNVX(sv) > (NV)UV_MAX) {
1659 (void)SvIOKp_on(sv);
1660 (void)SvNOK_on(sv);
1661 SvIsUV_on(sv);
1662 SvUVX(sv) = UV_MAX;
1663 return IS_NUMBER_OVERFLOW_UV;
1664 }
1665 if (!(numtype & (IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_TO_INT_BY_STRTOL))) {
1666 (void)SvIOKp_on(sv);
1667 (void)SvNOK_on(sv);
1668 /* Can't use strtol etc to convert this string */
1669 if (SvNVX(sv) <= (UV)IV_MAX) {
1670 SvIVX(sv) = I_V(SvNVX(sv));
1671 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
1672 SvIOK_on(sv); /* Integer is precise. NOK, IOK */
1673 } else {
1674 /* Integer is imprecise. NOK, IOKp */
1675 }
1676 return SvNVX(sv) < 0 ? IS_NUMBER_UNDERFLOW_UV : IS_NUMBER_IV_AND_UV;
1677 }
1678 SvIsUV_on(sv);
1679 SvUVX(sv) = U_V(SvNVX(sv));
1680 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
09bb3e27
NC		 1681 if (SvUVX(sv) == UV_MAX) {
1682 /* As we know that NVs don't preserve UVs, UV_MAX cannot
1683 possibly be preserved by NV. Hence, it must be overflow.
1684 NOK, IOKp */
1685 return IS_NUMBER_OVERFLOW_UV;
1686 }
28e5dec8
JH		 1687 SvIOK_on(sv); /* Integer is precise. NOK, UOK */
1688 } else {
1689 /* Integer is imprecise. NOK, IOKp */
1690 }
1691 return IS_NUMBER_OVERFLOW_IV;
1692 }
e57fe1aa 1693 return S_sv_2inuv_non_preserve(aTHX_ sv, numtype);
28e5dec8
JH		 1694}
1695#endif /* NV_PRESERVES_UV*/
1696
a0d0e21e 1697IV
864dbfa3 1698Perl_sv_2iv(pTHX_ register SV *sv)
79072805
LW		 1699{
1700 if (!sv)
1701 return 0;
8990e307 1702 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1703 mg_get(sv);
1704 if (SvIOKp(sv))
1705 return SvIVX(sv);
748a9306 1706 if (SvNOKp(sv)) {
25da4f38 1707 return I_V(SvNVX(sv));
748a9306 1708 }
36477c24 1709 if (SvPOKp(sv) && SvLEN(sv))
1710 return asIV(sv);
3fe9a6f1 1711 if (!SvROK(sv)) {
d008e5eb 1712 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 1713 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1714 report_uninit();
c6ee37c5 1715 }
36477c24 1716 return 0;
3fe9a6f1 1717 }
463ee0b2 1718 }
ed6116ce 1719 if (SvTHINKFIRST(sv)) {
a0d0e21e 1720 if (SvROK(sv)) {
a0d0e21e 1721 SV* tmpstr;
1554e226
DC		 1722 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1723 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1724 return SvIV(tmpstr);
56431972 1725 return PTR2IV(SvRV(sv));
a0d0e21e 1726 }
47deb5e7
NIS		 1727 if (SvREADONLY(sv) && SvFAKE(sv)) {
1728 sv_force_normal(sv);
1729 }
0336b60e 1730 if (SvREADONLY(sv) && !SvOK(sv)) {
0336b60e 1731 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1732 report_uninit();
ed6116ce
LW		 1733 return 0;
1734 }
79072805 1735 }
25da4f38
IZ		 1736 if (SvIOKp(sv)) {
1737 if (SvIsUV(sv)) {
1738 return (IV)(SvUVX(sv));
1739 }
1740 else {
1741 return SvIVX(sv);
1742 }
463ee0b2 1743 }
748a9306 1744 if (SvNOKp(sv)) {
28e5dec8
JH		 1745 /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv
1746 * without also getting a cached IV/UV from it at the same time
1747 * (ie PV->NV conversion should detect loss of accuracy and cache
1748 * IV or UV at same time to avoid this. NWC */
25da4f38
IZ		 1749
1750 if (SvTYPE(sv) == SVt_NV)
1751 sv_upgrade(sv, SVt_PVNV);
1752
28e5dec8
JH		 1753 (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */
1754 /* < not <= as for NV doesn't preserve UV, ((NV)IV_MAX+1) will almost
1755 certainly cast into the IV range at IV_MAX, whereas the correct
1756 answer is the UV IV_MAX +1. Hence < ensures that dodgy boundary
1757 cases go to UV */
1758 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
748a9306 1759 SvIVX(sv) = I_V(SvNVX(sv));
28e5dec8
JH		 1760 if (SvNVX(sv) == (NV) SvIVX(sv)
1761#ifndef NV_PRESERVES_UV
1762 && (((UV)1 << NV_PRESERVES_UV_BITS) >
1763 (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
1764 /* Don't flag it as "accurately an integer" if the number
1765 came from a (by definition imprecise) NV operation, and
1766 we're outside the range of NV integer precision */
1767#endif
1768 ) {
1769 SvIOK_on(sv); /* Can this go wrong with rounding? NWC */
1770 DEBUG_c(PerlIO_printf(Perl_debug_log,
1771 "0x%"UVxf" iv(%g => %"IVdf") (precise)\n",
1772 PTR2UV(sv),
1773 SvNVX(sv),
1774 SvIVX(sv)));
1775
1776 } else {
1777 /* IV not precise. No need to convert from PV, as NV
1778 conversion would already have cached IV if it detected
1779 that PV->IV would be better than PV->NV->IV
1780 flags already correct - don't set public IOK. */
1781 DEBUG_c(PerlIO_printf(Perl_debug_log,
1782 "0x%"UVxf" iv(%g => %"IVdf") (imprecise)\n",
1783 PTR2UV(sv),
1784 SvNVX(sv),
1785 SvIVX(sv)));
1786 }
1787 /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN,
1788 but the cast (NV)IV_MIN rounds to a the value less (more
1789 negative) than IV_MIN which happens to be equal to SvNVX ??
1790 Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and
1791 NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and
1792 (NV)UVX == NVX are both true, but the values differ. :-(
1793 Hopefully for 2s complement IV_MIN is something like
1794 0x8000000000000000 which will be exact. NWC */
d460ef45 1795 }
25da4f38 1796 else {
ff68c719 1797 SvUVX(sv) = U_V(SvNVX(sv));
28e5dec8
JH		 1798 if (
1799 (SvNVX(sv) == (NV) SvUVX(sv))
1800#ifndef NV_PRESERVES_UV
1801 /* Make sure it's not 0xFFFFFFFFFFFFFFFF */
1802 /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */
1803 && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv))
1804 /* Don't flag it as "accurately an integer" if the number
1805 came from a (by definition imprecise) NV operation, and
1806 we're outside the range of NV integer precision */
1807#endif
1808 )
1809 SvIOK_on(sv);
25da4f38
IZ		 1810 SvIsUV_on(sv);
1811 ret_iv_max:
1c846c1f 1812 DEBUG_c(PerlIO_printf(Perl_debug_log,
57def98f 1813 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
56431972 1814 PTR2UV(sv),
57def98f
JH		 1815 SvUVX(sv),
1816 SvUVX(sv)));
25da4f38
IZ		 1817 return (IV)SvUVX(sv);
1818 }
748a9306
LW		 1819 }
1820 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1821 I32 numtype = looks_like_number(sv);
1822
1823 /* We want to avoid a possible problem when we cache an IV which
1824 may be later translated to an NV, and the resulting NV is not
1825 the translation of the initial data.
1c846c1f 1826
25da4f38
IZ		 1827 This means that if we cache such an IV, we need to cache the
1828 NV as well. Moreover, we trade speed for space, and do not
28e5dec8 1829 cache the NV if we are sure it's not needed.
25da4f38 1830 */
16b7a9a4 1831
28e5dec8
JH		 1832 if ((numtype & ~IS_NUMBER_NEG) == IS_NUMBER_TO_INT_BY_ATOL) {
1833 /* The NV may be reconstructed from IV - safe to cache IV,
1834 which may be calculated by atol(). */
1835 if (SvTYPE(sv) < SVt_PVIV)
1836 sv_upgrade(sv, SVt_PVIV);
f7bbb42a 1837 (void)SvIOK_on(sv);
28e5dec8
JH		 1838 SvIVX(sv) = Atol(SvPVX(sv));
1839 } else {
1840#ifdef HAS_STRTOL
1841 IV i;
1842 int save_errno = errno;
1843 /* Is it an integer that we could convert with strtol?
1844 So try it, and if it doesn't set errno then it's pukka.
1845 This should be faster than going atof and then thinking. */
1846 if (((numtype & (IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_NOT_INT))
1847 == IS_NUMBER_TO_INT_BY_STRTOL)
1848 /* && is a sequence point. Without it not sure if I'm trying
1849 to do too much between sequence points and hence going
1850 undefined */
1851 && ((errno = 0), 1) /* , 1 so always true */
1852 && ((i = Strtol(SvPVX(sv), Null(char**), 10)), 1)
1853 && (errno == 0)) {
1854 if (SvTYPE(sv) < SVt_PVIV)
1855 sv_upgrade(sv, SVt_PVIV);
1856 (void)SvIOK_on(sv);
1857 SvIVX(sv) = i;
1858 errno = save_errno;
1859 } else
1860#endif
1861 {
1862 NV d;
1863#ifdef HAS_STRTOL
1864 /* Hopefully trace flow will optimise this away where possible
1865 */
1866 errno = save_errno;
1867#endif
1868 /* It wasn't an integer, or it overflowed, or we don't have
1869 strtol. Do things the slow way - check if it's a UV etc. */
1870 d = Atof(SvPVX(sv));
1871
1872 if (SvTYPE(sv) < SVt_PVNV)
1873 sv_upgrade(sv, SVt_PVNV);
1874 SvNVX(sv) = d;
1875
1876 if (! numtype && ckWARN(WARN_NUMERIC))
1877 not_a_number(sv);
1878
65202027 1879#if defined(USE_LONG_DOUBLE)
28e5dec8
JH		 1880 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%" PERL_PRIgldbl ")\n",
1881 PTR2UV(sv), SvNVX(sv)));
65202027 1882#else
28e5dec8
JH		 1883 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%g)\n",
1884 PTR2UV(sv), SvNVX(sv)));
65202027 1885#endif
28e5dec8
JH		 1886
1887
1888#ifdef NV_PRESERVES_UV
1889 (void)SvIOKp_on(sv);
1890 (void)SvNOK_on(sv);
1891 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
1892 SvIVX(sv) = I_V(SvNVX(sv));
1893 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
1894 SvIOK_on(sv);
1895 } else {
1896 /* Integer is imprecise. NOK, IOKp */
1897 }
1898 /* UV will not work better than IV */
1899 } else {
1900 if (SvNVX(sv) > (NV)UV_MAX) {
1901 SvIsUV_on(sv);
1902 /* Integer is inaccurate. NOK, IOKp, is UV */
1903 SvUVX(sv) = UV_MAX;
1904 SvIsUV_on(sv);
1905 } else {
1906 SvUVX(sv) = U_V(SvNVX(sv));
1907 /* 0xFFFFFFFFFFFFFFFF not an issue in here */
1908 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
1909 SvIOK_on(sv);
1910 SvIsUV_on(sv);
1911 } else {
1912 /* Integer is imprecise. NOK, IOKp, is UV */
1913 SvIsUV_on(sv);
1914 }
1915 }
1916 goto ret_iv_max;
1917 }
1918#else /* NV_PRESERVES_UV */
1919 if (((UV)1 << NV_PRESERVES_UV_BITS) >
1920 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) {
1921 /* Small enough to preserve all bits. */
1922 (void)SvIOKp_on(sv);
1923 SvNOK_on(sv);
1924 SvIVX(sv) = I_V(SvNVX(sv));
1925 if ((NV)(SvIVX(sv)) == SvNVX(sv))
1926 SvIOK_on(sv);
1927 /* Assumption: first non-preserved integer is < IV_MAX,
1928 this NV is in the preserved range, therefore: */
1929 if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))
1930 < (UV)IV_MAX)) {
1931 Perl_croak(aTHX_ "sv_2iv assumed (U_V(fabs(SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%g U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX);
1932 }
1933 } else if (sv_2iuv_non_preserve (sv, numtype)
1934 >= IS_NUMBER_OVERFLOW_IV)
1935 goto ret_iv_max;
1936#endif /* NV_PRESERVES_UV */
25da4f38
IZ		 1937 }
1938 }
28e5dec8 1939 } else {
599cee73 1940 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1941 report_uninit();
25da4f38
IZ		 1942 if (SvTYPE(sv) < SVt_IV)
1943 /* Typically the caller expects that sv_any is not NULL now. */
1944 sv_upgrade(sv, SVt_IV);
a0d0e21e 1945 return 0;
79072805 1946 }
1d7c1841
GS		 1947 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1948 PTR2UV(sv),SvIVX(sv)));
25da4f38 1949 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
79072805
LW		 1950}
1951
ff68c719 1952UV
864dbfa3 1953Perl_sv_2uv(pTHX_ register SV *sv)
ff68c719 1954{
1955 if (!sv)
1956 return 0;
1957 if (SvGMAGICAL(sv)) {
1958 mg_get(sv);
1959 if (SvIOKp(sv))
1960 return SvUVX(sv);
1961 if (SvNOKp(sv))
1962 return U_V(SvNVX(sv));
36477c24 1963 if (SvPOKp(sv) && SvLEN(sv))
1964 return asUV(sv);
3fe9a6f1 1965 if (!SvROK(sv)) {
d008e5eb 1966 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 1967 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1968 report_uninit();
c6ee37c5 1969 }
36477c24 1970 return 0;
3fe9a6f1 1971 }
ff68c719 1972 }
1973 if (SvTHINKFIRST(sv)) {
1974 if (SvROK(sv)) {
ff68c719 1975 SV* tmpstr;
1554e226
DC		 1976 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1977 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1978 return SvUV(tmpstr);
56431972 1979 return PTR2UV(SvRV(sv));
ff68c719 1980 }
8a818333
NIS		 1981 if (SvREADONLY(sv) && SvFAKE(sv)) {
1982 sv_force_normal(sv);
1983 }
0336b60e 1984 if (SvREADONLY(sv) && !SvOK(sv)) {
0336b60e 1985 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1986 report_uninit();
ff68c719 1987 return 0;
1988 }
1989 }
25da4f38
IZ		 1990 if (SvIOKp(sv)) {
1991 if (SvIsUV(sv)) {
1992 return SvUVX(sv);
1993 }
1994 else {
1995 return (UV)SvIVX(sv);
1996 }
ff68c719 1997 }
1998 if (SvNOKp(sv)) {
28e5dec8
JH		 1999 /* erm. not sure. *should* never get NOKp (without NOK) from sv_2nv
2000 * without also getting a cached IV/UV from it at the same time
2001 * (ie PV->NV conversion should detect loss of accuracy and cache
2002 * IV or UV at same time to avoid this. */
2003 /* IV-over-UV optimisation - choose to cache IV if possible */
2004
25da4f38
IZ		 2005 if (SvTYPE(sv) == SVt_NV)
2006 sv_upgrade(sv, SVt_PVNV);
28e5dec8
JH		 2007
2008 (void)SvIOKp_on(sv); /* Must do this first, to clear any SvOOK */
2009 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
f7bbb42a 2010 SvIVX(sv) = I_V(SvNVX(sv));
28e5dec8
JH		 2011 if (SvNVX(sv) == (NV) SvIVX(sv)
2012#ifndef NV_PRESERVES_UV
2013 && (((UV)1 << NV_PRESERVES_UV_BITS) >
2014 (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
2015 /* Don't flag it as "accurately an integer" if the number
2016 came from a (by definition imprecise) NV operation, and
2017 we're outside the range of NV integer precision */
2018#endif
2019 ) {
2020 SvIOK_on(sv); /* Can this go wrong with rounding? NWC */
2021 DEBUG_c(PerlIO_printf(Perl_debug_log,
2022 "0x%"UVxf" uv(%g => %"IVdf") (precise)\n",
2023 PTR2UV(sv),
2024 SvNVX(sv),
2025 SvIVX(sv)));
2026
2027 } else {
2028 /* IV not precise. No need to convert from PV, as NV
2029 conversion would already have cached IV if it detected
2030 that PV->IV would be better than PV->NV->IV
2031 flags already correct - don't set public IOK. */
2032 DEBUG_c(PerlIO_printf(Perl_debug_log,
2033 "0x%"UVxf" uv(%g => %"IVdf") (imprecise)\n",
2034 PTR2UV(sv),
2035 SvNVX(sv),
2036 SvIVX(sv)));
2037 }
2038 /* Can the above go wrong if SvIVX == IV_MIN and SvNVX < IV_MIN,
2039 but the cast (NV)IV_MIN rounds to a the value less (more
2040 negative) than IV_MIN which happens to be equal to SvNVX ??
2041 Analogous to 0xFFFFFFFFFFFFFFFF rounding up to NV (2**64) and
2042 NV rounding back to 0xFFFFFFFFFFFFFFFF, so UVX == UV(NVX) and
2043 (NV)UVX == NVX are both true, but the values differ. :-(
2044 Hopefully for 2s complement IV_MIN is something like
2045 0x8000000000000000 which will be exact. NWC */
d460ef45 2046 }
28e5dec8
JH		 2047 else {
2048 SvUVX(sv) = U_V(SvNVX(sv));
2049 if (
2050 (SvNVX(sv) == (NV) SvUVX(sv))
2051#ifndef NV_PRESERVES_UV
2052 /* Make sure it's not 0xFFFFFFFFFFFFFFFF */
2053 /*&& (SvUVX(sv) != UV_MAX) irrelevant with code below */
2054 && (((UV)1 << NV_PRESERVES_UV_BITS) > SvUVX(sv))
2055 /* Don't flag it as "accurately an integer" if the number
2056 came from a (by definition imprecise) NV operation, and
2057 we're outside the range of NV integer precision */
2058#endif
2059 )
2060 SvIOK_on(sv);
2061 SvIsUV_on(sv);
1c846c1f 2062 DEBUG_c(PerlIO_printf(Perl_debug_log,
28e5dec8 2063 "0x%"UVxf" 2uv(%"UVuf" => %"IVdf") (as unsigned)\n",
57def98f 2064 PTR2UV(sv),
28e5dec8
JH		 2065 SvUVX(sv),
2066 SvUVX(sv)));
25da4f38 2067 }
ff68c719 2068 }
2069 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 2070 I32 numtype = looks_like_number(sv);
2071
2072 /* We want to avoid a possible problem when we cache a UV which
2073 may be later translated to an NV, and the resulting NV is not
2074 the translation of the initial data.
1c846c1f 2075
25da4f38
IZ		 2076 This means that if we cache such a UV, we need to cache the
2077 NV as well. Moreover, we trade speed for space, and do not
2078 cache the NV if not needed.
2079 */
16b7a9a4 2080
28e5dec8 2081 if ((numtype & ~IS_NUMBER_NEG) == IS_NUMBER_TO_INT_BY_ATOL) {
f7bbb42a 2082 /* The NV may be reconstructed from IV - safe to cache IV,
28e5dec8
JH		 2083 which may be calculated by atol(). */
2084 if (SvTYPE(sv) < SVt_PVIV)
f7bbb42a
JH		 2085 sv_upgrade(sv, SVt_PVIV);
2086 (void)SvIOK_on(sv);
28e5dec8
JH		 2087 SvIVX(sv) = Atol(SvPVX(sv));
2088 } else {
f7bbb42a 2089#ifdef HAS_STRTOUL
28e5dec8 2090 UV u;
f9172815 2091 char *num_begin = SvPVX(sv);
28e5dec8 2092 int save_errno = errno;
d460ef45 2093
f9172815
JH		 2094 /* seems that strtoul taking numbers that start with - is
2095 implementation dependant, and can't be relied upon. */
2096 if (numtype & IS_NUMBER_NEG) {
2097 /* Not totally defensive. assumine that looks_like_num
2098 didn't lie about a - sign */
2099 while (isSPACE(*num_begin))
2100 num_begin++;
2101 if (*num_begin == '-')
2102 num_begin++;
2103 }
d460ef45 2104
28e5dec8
JH		 2105 /* Is it an integer that we could convert with strtoul?
2106 So try it, and if it doesn't set errno then it's pukka.
2107 This should be faster than going atof and then thinking. */
2108 if (((numtype & (IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_NOT_INT))
2109 == IS_NUMBER_TO_INT_BY_STRTOL)
2110 && ((errno = 0), 1) /* always true */
f9172815 2111 && ((u = Strtoul(num_begin, Null(char**), 10)), 1) /* ditto */
28e5dec8 2112 && (errno == 0)
d460ef45 2113 /* If known to be negative, check it didn't undeflow IV
f9172815
JH		 2114 XXX possibly we should put more negative values as NVs
2115 direct rather than go via atof below */
2116 && ((numtype & IS_NUMBER_NEG) ? (u <= (UV)IV_MIN) : 1)) {
28e5dec8
JH		 2117 errno = save_errno;
2118
2119 if (SvTYPE(sv) < SVt_PVIV)
2120 sv_upgrade(sv, SVt_PVIV);
2121 (void)SvIOK_on(sv);
2122
2123 /* If it's negative must use IV.
2124 IV-over-UV optimisation */
f9172815
JH		 2125 if (numtype & IS_NUMBER_NEG) {
2126 SvIVX(sv) = -(IV)u;
2127 } else if (u <= (UV) IV_MAX) {
28e5dec8
JH		 2128 SvIVX(sv) = (IV)u;
2129 } else {
2130 /* it didn't overflow, and it was positive. */
2131 SvUVX(sv) = u;
2132 SvIsUV_on(sv);
2133 }
2134 } else
f7bbb42a 2135#endif
28e5dec8
JH		 2136 {
2137 NV d;
2138#ifdef HAS_STRTOUL
2139 /* Hopefully trace flow will optimise this away where possible
2140 */
2141 errno = save_errno;
2142#endif
2143 /* It wasn't an integer, or it overflowed, or we don't have
2144 strtol. Do things the slow way - check if it's a IV etc. */
2145 d = Atof(SvPVX(sv));
2146
2147 if (SvTYPE(sv) < SVt_PVNV)
2148 sv_upgrade(sv, SVt_PVNV);
2149 SvNVX(sv) = d;
2150
2151 if (! numtype && ckWARN(WARN_NUMERIC))
2152 not_a_number(sv);
2153
2154#if defined(USE_LONG_DOUBLE)
2155 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%" PERL_PRIgldbl ")\n",
2156 PTR2UV(sv), SvNVX(sv)));
2157#else
2158 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%g)\n",
2159 PTR2UV(sv), SvNVX(sv)));
2160#endif
2161
2162#ifdef NV_PRESERVES_UV
2163 (void)SvIOKp_on(sv);
2164 (void)SvNOK_on(sv);
2165 if (SvNVX(sv) < (NV)IV_MAX + 0.5) {
2166 SvIVX(sv) = I_V(SvNVX(sv));
2167 if ((NV)(SvIVX(sv)) == SvNVX(sv)) {
2168 SvIOK_on(sv);
2169 } else {
2170 /* Integer is imprecise. NOK, IOKp */
2171 }
2172 /* UV will not work better than IV */
2173 } else {
2174 if (SvNVX(sv) > (NV)UV_MAX) {
2175 SvIsUV_on(sv);
2176 /* Integer is inaccurate. NOK, IOKp, is UV */
2177 SvUVX(sv) = UV_MAX;
2178 SvIsUV_on(sv);
2179 } else {
2180 SvUVX(sv) = U_V(SvNVX(sv));
2181 /* 0xFFFFFFFFFFFFFFFF not an issue in here, NVs
2182 NV preservse UV so can do correct comparison. */
2183 if ((NV)(SvUVX(sv)) == SvNVX(sv)) {
2184 SvIOK_on(sv);
2185 SvIsUV_on(sv);
2186 } else {
2187 /* Integer is imprecise. NOK, IOKp, is UV */
2188 SvIsUV_on(sv);
2189 }
2190 }
2191 }
2192#else /* NV_PRESERVES_UV */
2193 if (((UV)1 << NV_PRESERVES_UV_BITS) >
2194 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))) {
2195 /* Small enough to preserve all bits. */
2196 (void)SvIOKp_on(sv);
2197 SvNOK_on(sv);
2198 SvIVX(sv) = I_V(SvNVX(sv));
2199 if ((NV)(SvIVX(sv)) == SvNVX(sv))
2200 SvIOK_on(sv);
2201 /* Assumption: first non-preserved integer is < IV_MAX,
2202 this NV is in the preserved range, therefore: */
2203 if (!(U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv))
2204 < (UV)IV_MAX)) {
2205 Perl_croak(aTHX_ "sv_2uv assumed (U_V(fabs(SvNVX(sv))) < (UV)IV_MAX) but SvNVX(sv)=%g U_V is 0x%"UVxf", IV_MAX is 0x%"UVxf"\n", SvNVX(sv), U_V(SvNVX(sv)), (UV)IV_MAX);
2206 }
2207 } else
2208 sv_2iuv_non_preserve (sv, numtype);
2209#endif /* NV_PRESERVES_UV */
2210 }
f7bbb42a 2211 }
ff68c719 2212 }
2213 else {
d008e5eb 2214 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 2215 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2216 report_uninit();
c6ee37c5 2217 }
25da4f38
IZ		 2218 if (SvTYPE(sv) < SVt_IV)
2219 /* Typically the caller expects that sv_any is not NULL now. */
2220 sv_upgrade(sv, SVt_IV);
ff68c719 2221 return 0;
2222 }
25da4f38 2223
1d7c1841
GS		 2224 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
2225 PTR2UV(sv),SvUVX(sv)));
25da4f38 2226 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
ff68c719 2227}
2228
65202027 2229NV
864dbfa3 2230Perl_sv_2nv(pTHX_ register SV *sv)
79072805
LW		 2231{
2232 if (!sv)
2233 return 0.0;
8990e307 2234 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2235 mg_get(sv);
2236 if (SvNOKp(sv))
2237 return SvNVX(sv);
a0d0e21e 2238 if (SvPOKp(sv) && SvLEN(sv)) {
599cee73 2239 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 2240 not_a_number(sv);
097ee67d 2241 return Atof(SvPVX(sv));
a0d0e21e 2242 }
25da4f38 2243 if (SvIOKp(sv)) {
1c846c1f 2244 if (SvIsUV(sv))
65202027 2245 return (NV)SvUVX(sv);
25da4f38 2246 else
65202027 2247 return (NV)SvIVX(sv);
25da4f38 2248 }
16d20bd9 2249 if (!SvROK(sv)) {
d008e5eb 2250 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 2251 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2252 report_uninit();
c6ee37c5 2253 }
16d20bd9
AD		 2254 return 0;
2255 }
463ee0b2 2256 }
ed6116ce 2257 if (SvTHINKFIRST(sv)) {
a0d0e21e 2258 if (SvROK(sv)) {
a0d0e21e 2259 SV* tmpstr;
1554e226
DC		 2260 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
2261 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 2262 return SvNV(tmpstr);
56431972 2263 return PTR2NV(SvRV(sv));
a0d0e21e 2264 }
8a818333
NIS		 2265 if (SvREADONLY(sv) && SvFAKE(sv)) {
2266 sv_force_normal(sv);
2267 }
0336b60e 2268 if (SvREADONLY(sv) && !SvOK(sv)) {
599cee73 2269 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2270 report_uninit();
ed6116ce
LW		 2271 return 0.0;
2272 }
79072805
LW		 2273 }
2274 if (SvTYPE(sv) < SVt_NV) {
463ee0b2
LW		 2275 if (SvTYPE(sv) == SVt_IV)
2276 sv_upgrade(sv, SVt_PVNV);
2277 else
2278 sv_upgrade(sv, SVt_NV);
572bbb43 2279#if defined(USE_LONG_DOUBLE)
097ee67d 2280 DEBUG_c({
f93f4e46 2281 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 2282 PerlIO_printf(Perl_debug_log,
2283 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
2284 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 2285 RESTORE_NUMERIC_LOCAL();
2286 });
65202027 2287#else
572bbb43 2288 DEBUG_c({
f93f4e46 2289 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 2290 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
2291 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 2292 RESTORE_NUMERIC_LOCAL();
2293 });
572bbb43 2294#endif
79072805
LW		 2295 }
2296 else if (SvTYPE(sv) < SVt_PVNV)
2297 sv_upgrade(sv, SVt_PVNV);
748a9306
LW		 2298 if (SvIOKp(sv) &&
2299 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
93a17b20 2300 {
65202027 2301 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
28e5dec8
JH		 2302#ifdef NV_PRESERVES_UV
2303 SvNOK_on(sv);
2304#else
2305 /* Only set the public NV OK flag if this NV preserves the IV */
2306 /* Check it's not 0xFFFFFFFFFFFFFFFF */
2307 if (SvIsUV(sv) ? ((SvUVX(sv) != UV_MAX)&&(SvUVX(sv) == U_V(SvNVX(sv))))
2308 : (SvIVX(sv) == I_V(SvNVX(sv))))
2309 SvNOK_on(sv);
2310 else
2311 SvNOKp_on(sv);
2312#endif
93a17b20 2313 }
748a9306 2314 else if (SvPOKp(sv) && SvLEN(sv)) {
599cee73 2315 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 2316 not_a_number(sv);
097ee67d 2317 SvNVX(sv) = Atof(SvPVX(sv));
28e5dec8
JH		 2318#ifdef NV_PRESERVES_UV
2319 SvNOK_on(sv);
2320#else
2321 /* Only set the public NV OK flag if this NV preserves the value in
2322 the PV at least as well as an IV/UV would.
2323 Not sure how to do this 100% reliably. */
2324 /* if that shift count is out of range then Configure's test is
2325 wonky. We shouldn't be in here with NV_PRESERVES_UV_BITS ==
2326 UV_BITS */
2327 if (((UV)1 << NV_PRESERVES_UV_BITS) >
2328 U_V(SvNVX(sv) > 0 ? SvNVX(sv) : -SvNVX(sv)))
2329 SvNOK_on(sv); /* Definitely small enough to preserve all bits */
2330 else if (SvNVX(sv) < (NV)IV_MIN || SvNVX(sv) > (NV)UV_MAX) {
2331 /* Definitely too large/small to fit in an integer, so no loss
2332 of precision going to integer in the future via NV */
2333 SvNOK_on(sv);
2334 } else {
2335 /* Is it something we can run through strtol etc (ie no
2336 trailing exponent part)? */
2337 int numtype = looks_like_number(sv);
2338 /* XXX probably should cache this if called above */
2339
2340 if (!(numtype &
2341 (IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_TO_INT_BY_STRTOL))) {
2342 /* Can't use strtol etc to convert this string, so don't try */
2343 SvNOK_on(sv);
2344 } else
2345 sv_2inuv_non_preserve (sv, numtype);
2346 }
2347#endif /* NV_PRESERVES_UV */
93a17b20 2348 }
79072805 2349 else {
599cee73 2350 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 2351 report_uninit();
25da4f38
IZ		 2352 if (SvTYPE(sv) < SVt_NV)
2353 /* Typically the caller expects that sv_any is not NULL now. */
28e5dec8
JH		 2354 /* XXX Ilya implies that this is a bug in callers that assume this
2355 and ideally should be fixed. */
25da4f38 2356 sv_upgrade(sv, SVt_NV);
a0d0e21e 2357 return 0.0;
79072805 2358 }
572bbb43 2359#if defined(USE_LONG_DOUBLE)
097ee67d 2360 DEBUG_c({
f93f4e46 2361 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 2362 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
2363 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 2364 RESTORE_NUMERIC_LOCAL();
2365 });
65202027 2366#else
572bbb43 2367 DEBUG_c({
f93f4e46 2368 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 2369 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
2370 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 2371 RESTORE_NUMERIC_LOCAL();
2372 });
572bbb43 2373#endif
463ee0b2 2374 return SvNVX(sv);
79072805
LW		 2375}
2376
76e3520e 2377STATIC IV
cea2e8a9 2378S_asIV(pTHX_ SV *sv)
36477c24 2379{
2380 I32 numtype = looks_like_number(sv);
65202027 2381 NV d;
36477c24 2382
25da4f38 2383 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 2384 return Atol(SvPVX(sv));
d008e5eb 2385 if (!numtype) {
d008e5eb
GS		 2386 if (ckWARN(WARN_NUMERIC))
2387 not_a_number(sv);
2388 }
097ee67d 2389 d = Atof(SvPVX(sv));
25da4f38 2390 return I_V(d);
36477c24 2391}
2392
76e3520e 2393STATIC UV
cea2e8a9 2394S_asUV(pTHX_ SV *sv)
36477c24 2395{
2396 I32 numtype = looks_like_number(sv);
2397
84902520 2398#ifdef HAS_STRTOUL
25da4f38 2399 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 2400 return Strtoul(SvPVX(sv), Null(char**), 10);
84902520 2401#endif
d008e5eb 2402 if (!numtype) {
d008e5eb
GS		 2403 if (ckWARN(WARN_NUMERIC))
2404 not_a_number(sv);
2405 }
097ee67d 2406 return U_V(Atof(SvPVX(sv)));
36477c24 2407}
2408
25da4f38
IZ		 2409/*
2410 * Returns a combination of (advisory only - can get false negatives)
28e5dec8
JH		 2411 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF
2412 * IS_NUMBER_LONGER_THAN_IV_MAX, IS_NUMBER_AS_LONG_AS_IV_MAX
2413 * IS_NUMBER_NOT_INT, IS_NUMBER_NEG, IS_NUMBER_INFINITY
25da4f38
IZ		 2414 * 0 if does not look like number.
2415 *
28e5dec8
JH		 2416 * (atol and strtol stop when they hit a decimal point. strtol will return
2417 * LONG_MAX and LONG_MIN when given out of range values. ANSI says they should
2418 * do this, and vendors have had 11 years to get it right.
2419 * However, will try to make it still work with only atol
d460ef45 2420 *
28e5dec8
JH		 2421 * IS_NUMBER_TO_INT_BY_ATOL 123456789 or 123456789.3 definitely < IV_MAX
2422 * IS_NUMBER_TO_INT_BY_STRTOL 123456789 or 123456789.3 if digits = IV_MAX
2423 * IS_NUMBER_TO_INT_BY_ATOF 123456789e0 or >> IV_MAX
2424 * IS_NUMBER_LONGER_THAN_IV_MAX lots of digits, don't bother with atol
2425 * IS_NUMBER_AS_LONG_AS_IV_MAX atol might hit LONG_MAX, might not.
2426 * IS_NUMBER_NOT_INT saw "." or "e"
2427 * IS_NUMBER_NEG
300aed98 2428 * IS_NUMBER_INFINITY
25da4f38
IZ		 2429 */
2430
954c1994
GS		 2431/*
2432=for apidoc looks_like_number
2433
2434Test if an the content of an SV looks like a number (or is a
28e5dec8
JH		 2435number). C<Inf> and C<Infinity> are treated as numbers (so will not
2436issue a non-numeric warning), even if your atof() doesn't grok them.
954c1994
GS		 2437
2438=cut
2439*/
2440
36477c24 2441I32
864dbfa3 2442Perl_looks_like_number(pTHX_ SV *sv)
36477c24 2443{
2444 register char *s;
2445 register char *send;
2446 register char *sbegin;
25da4f38
IZ		 2447 register char *nbegin;
2448 I32 numtype = 0;
300aed98 2449 I32 sawinf = 0;
36477c24 2450 STRLEN len;
2451
2452 if (SvPOK(sv)) {
1c846c1f 2453 sbegin = SvPVX(sv);
36477c24 2454 len = SvCUR(sv);
2455 }
2456 else if (SvPOKp(sv))
2457 sbegin = SvPV(sv, len);
2458 else
2459 return 1;
2460 send = sbegin + len;
2461
2462 s = sbegin;
2463 while (isSPACE(*s))
2464 s++;
25da4f38
IZ		 2465 if (*s == '-') {
2466 s++;
2467 numtype = IS_NUMBER_NEG;
2468 }
2469 else if (*s == '+')
36477c24 2470 s++;
ff0cee69 2471
25da4f38
IZ		 2472 nbegin = s;
2473 /*
d460ef45 2474 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can converted to
28e5dec8
JH		 2475 * integer with atol() without overflow, IS_NUMBER_TO_INT_BY_STRTOL if
2476 * possibly slightly larger than max int, IS_NUMBER_TO_INT_BY_ATOF if you
2477 * will need (int)atof().
25da4f38
IZ		 2478 */
2479
300aed98 2480 /* next must be digit or the radix separator or beginning of infinity */
ff0cee69 2481 if (isDIGIT(*s)) {
2482 do {
2483 s++;
2484 } while (isDIGIT(*s));
25da4f38 2485
28e5dec8
JH		 2486 /* Aaargh. long long really is irritating.
2487 In the gospel according to ANSI 1989, it is an axiom that "long"
2488 is the longest integer type, and that if you don't know how long
2489 something is you can cast it to long, and nothing will be lost
2490 (except possibly speed of execution if long is slower than the
2491 type is was).
2492 Now, one can't be sure if the old rules apply, or long long
2493 (or some other newfangled thing) is actually longer than the
2494 (formerly) longest thing.
2495 */
2496 /* This lot will work for 64 bit *as long as* either
2497 either long is 64 bit
2498 or we can find both strtol/strtoq and strtoul/strtouq
2499 If not, we really should refuse to let the user use 64 bit IVs
2500 By "64 bit" I really mean IVs that don't get preserved by NVs
2501 It also should work for 128 bit IVs. Can any lend me a machine to
2502 test this?
2503 */
2504 if (s - nbegin > TYPE_DIGITS(UV)) /* Cannot cache ato[ul]() */
2505 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_LONGER_THAN_IV_MAX;
2506 else if (s - nbegin < BIT_DIGITS(((sizeof (IV)>sizeof (long))
2507 ? sizeof(long) : sizeof (IV))*8-1))
f7bbb42a 2508 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
28e5dec8
JH		 2509 else
2510 /* Can't be sure either way. (For 64 bit UV, 63 bit IV is 1 decimal
2511 digit less (IV_MAX= 9223372036854775807,
2512 UV_MAX= 18446744073709551615) so be cautious */
2513 numtype |= IS_NUMBER_TO_INT_BY_STRTOL | IS_NUMBER_AS_LONG_AS_IV_MAX;
25da4f38 2514
097ee67d 2515 if (*s == '.'
1c846c1f 2516#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 2517 || IS_NUMERIC_RADIX(*s)
2518#endif
2519 ) {
ff0cee69 2520 s++;
28e5dec8 2521 numtype |= IS_NUMBER_NOT_INT;
097ee67d 2522 while (isDIGIT(*s)) /* optional digits after the radix */
ff0cee69 2523 s++;
2524 }
36477c24 2525 }
097ee67d 2526 else if (*s == '.'
1c846c1f 2527#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 2528 || IS_NUMERIC_RADIX(*s)
2529#endif
2530 ) {
ff0cee69 2531 s++;
28e5dec8 2532 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_INT;
097ee67d 2533 /* no digits before the radix means we need digits after it */
ff0cee69 2534 if (isDIGIT(*s)) {
2535 do {
2536 s++;
2537 } while (isDIGIT(*s));
2538 }
2539 else
2540 return 0;
2541 }
300aed98
JH		 2542 else if (*s == 'I' || *s == 'i') {
2543 s++; if (*s != 'N' && *s != 'n') return 0;
2544 s++; if (*s != 'F' && *s != 'f') return 0;
2545 s++; if (*s == 'I' || *s == 'i') {
2546 s++; if (*s != 'N' && *s != 'n') return 0;
2547 s++; if (*s != 'I' && *s != 'i') return 0;
2548 s++; if (*s != 'T' && *s != 't') return 0;
2549 s++; if (*s != 'Y' && *s != 'y') return 0;
99938567 2550 s++;
300aed98
JH		 2551 }
2552 sawinf = 1;
2553 }
ff0cee69 2554 else
2555 return 0;
2556
300aed98 2557 if (sawinf)
28e5dec8
JH		 2558 numtype = (numtype & IS_NUMBER_NEG) /* Keep track of sign */
2559 | IS_NUMBER_INFINITY | IS_NUMBER_NOT_INT;
300aed98
JH		 2560 else {
2561 /* we can have an optional exponent part */
2562 if (*s == 'e' || *s == 'E') {
28e5dec8
JH		 2563 numtype &= IS_NUMBER_NEG;
2564 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_INT;
36477c24 2565 s++;
300aed98
JH		 2566 if (*s == '+' || *s == '-')
2567 s++;
2568 if (isDIGIT(*s)) {
2569 do {
2570 s++;
2571 } while (isDIGIT(*s));
2572 }
2573 else
2574 return 0;
2575 }
36477c24 2576 }
2577 while (isSPACE(*s))
2578 s++;
80f3f388 2579 if (s >= send)
36477c24 2580 return numtype;
2581 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2582 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2583 return 0;
2584}
2585
79072805 2586char *
864dbfa3 2587Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2588{
2589 STRLEN n_a;
2590 return sv_2pv(sv, &n_a);
2591}
2592
25da4f38 2593/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2594static char *
25da4f38
IZ		 2595uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2596{
25da4f38
IZ		 2597 char *ptr = buf + TYPE_CHARS(UV);
2598 char *ebuf = ptr;
2599 int sign;
25da4f38
IZ		 2600
2601 if (is_uv)
2602 sign = 0;
2603 else if (iv >= 0) {
2604 uv = iv;
2605 sign = 0;
2606 } else {
2607 uv = -iv;
2608 sign = 1;
2609 }
2610 do {
2611 *--ptr = '0' + (uv % 10);
2612 } while (uv /= 10);
2613 if (sign)
2614 *--ptr = '-';
2615 *peob = ebuf;
2616 return ptr;
2617}
2618
1fa8b10d 2619char *
864dbfa3 2620Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2621{
2622 register char *s;
2623 int olderrno;
46fc3d4c 2624 SV *tsv;
25da4f38
IZ		 2625 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2626 char *tmpbuf = tbuf;
79072805 2627
463ee0b2
LW		 2628 if (!sv) {
2629 *lp = 0;
2630 return "";
2631 }
8990e307 2632 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2633 mg_get(sv);
2634 if (SvPOKp(sv)) {
2635 *lp = SvCUR(sv);
2636 return SvPVX(sv);
2637 }
cf2093f6 2638 if (SvIOKp(sv)) {
1c846c1f 2639 if (SvIsUV(sv))
57def98f 2640 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2641 else
57def98f 2642 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2643 tsv = Nullsv;
a0d0e21e 2644 goto tokensave;
463ee0b2
LW		 2645 }
2646 if (SvNOKp(sv)) {
2d4389e4 2647 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2648 tsv = Nullsv;
a0d0e21e 2649 goto tokensave;
463ee0b2 2650 }
16d20bd9 2651 if (!SvROK(sv)) {
d008e5eb 2652 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
d008e5eb 2653 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2654 report_uninit();
c6ee37c5 2655 }
16d20bd9
AD		 2656 *lp = 0;
2657 return "";
2658 }
463ee0b2 2659 }
ed6116ce
LW		 2660 if (SvTHINKFIRST(sv)) {
2661 if (SvROK(sv)) {
a0d0e21e 2662 SV* tmpstr;
1554e226
DC		 2663 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2664 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 2665 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2666 sv = (SV*)SvRV(sv);
2667 if (!sv)
2668 s = "NULLREF";
2669 else {
f9277f47
IZ		 2670 MAGIC *mg;
2671
ed6116ce 2672 switch (SvTYPE(sv)) {
f9277f47
IZ		 2673 case SVt_PVMG:
2674 if ( ((SvFLAGS(sv) &
1c846c1f 2675 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2676 == (SVs_OBJECT|SVs_RMG))
57668c4d 2677 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2678 && (mg = mg_find(sv, 'r'))) {
2cd61cdb 2679 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2680
2cd61cdb 2681 if (!mg->mg_ptr) {
8782bef2
GB		 2682 char *fptr = "msix";
2683 char reflags[6];
2684 char ch;
2685 int left = 0;
2686 int right = 4;
2687 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2688
155aba94 2689 while((ch = *fptr++)) {
8782bef2
GB		 2690 if(reganch & 1) {
2691 reflags[left++] = ch;
2692 }
2693 else {
2694 reflags[right--] = ch;
2695 }
2696 reganch >>= 1;
2697 }
2698 if(left != 4) {
2699 reflags[left] = '-';
2700 left = 5;
2701 }
2702
2703 mg->mg_len = re->prelen + 4 + left;
2704 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2705 Copy("(?", mg->mg_ptr, 2, char);
2706 Copy(reflags, mg->mg_ptr+2, left, char);
2707 Copy(":", mg->mg_ptr+left+2, 1, char);
2708 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2709 mg->mg_ptr[mg->mg_len - 1] = ')';
2710 mg->mg_ptr[mg->mg_len] = 0;
2711 }
3280af22 2712 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2713 *lp = mg->mg_len;
2714 return mg->mg_ptr;
f9277f47
IZ		 2715 }
2716 /* Fall through */
ed6116ce
LW		 2717 case SVt_NULL:
2718 case SVt_IV:
2719 case SVt_NV:
2720 case SVt_RV:
2721 case SVt_PV:
2722 case SVt_PVIV:
2723 case SVt_PVNV:
81689caa
HS		 2724 case SVt_PVBM: if (SvROK(sv))
2725 s = "REF";
2726 else
2727 s = "SCALAR"; break;
ed6116ce
LW		 2728 case SVt_PVLV: s = "LVALUE"; break;
2729 case SVt_PVAV: s = "ARRAY"; break;
2730 case SVt_PVHV: s = "HASH"; break;
2731 case SVt_PVCV: s = "CODE"; break;
2732 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2733 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2734 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2735 default: s = "UNKNOWN"; break;
2736 }
46fc3d4c 2737 tsv = NEWSV(0,0);
ed6116ce 2738 if (SvOBJECT(sv))
cea2e8a9 2739 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2740 else
46fc3d4c 2741 sv_setpv(tsv, s);
57def98f 2742 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2743 goto tokensaveref;
463ee0b2 2744 }
ed6116ce
LW		 2745 *lp = strlen(s);
2746 return s;
79072805 2747 }
0336b60e 2748 if (SvREADONLY(sv) && !SvOK(sv)) {
0336b60e 2749 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2750 report_uninit();
ed6116ce
LW		 2751 *lp = 0;
2752 return "";
79072805 2753 }
79072805 2754 }
28e5dec8
JH		 2755 if (SvIOK(sv) || ((SvIOKp(sv) && !SvNOKp(sv)))) {
2756 /* I'm assuming that if both IV and NV are equally valid then
2757 converting the IV is going to be more efficient */
2758 U32 isIOK = SvIOK(sv);
2759 U32 isUIOK = SvIsUV(sv);
2760 char buf[TYPE_CHARS(UV)];
2761 char *ebuf, *ptr;
2762
2763 if (SvTYPE(sv) < SVt_PVIV)
2764 sv_upgrade(sv, SVt_PVIV);
2765 if (isUIOK)
2766 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2767 else
2768 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2769 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2770 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2771 SvCUR_set(sv, ebuf - ptr);
2772 s = SvEND(sv);
2773 *s = '\0';
2774 if (isIOK)
2775 SvIOK_on(sv);
2776 else
2777 SvIOKp_on(sv);
2778 if (isUIOK)
2779 SvIsUV_on(sv);
2780 }
2781 else if (SvNOKp(sv)) {
79072805
LW		 2782 if (SvTYPE(sv) < SVt_PVNV)
2783 sv_upgrade(sv, SVt_PVNV);
1c846c1f 2784 /* The +20 is pure guesswork. Configure test needed. --jhi */
59155cc0 2785 SvGROW(sv, NV_DIG + 20);
463ee0b2 2786 s = SvPVX(sv);
79072805 2787 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2788#ifdef apollo
463ee0b2 2789 if (SvNVX(sv) == 0.0)
79072805
LW		 2790 (void)strcpy(s,"0");
2791 else
2792#endif /*apollo*/
bbce6d69 2793 {
2d4389e4 2794 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2795 }
79072805 2796 errno = olderrno;
a0d0e21e
LW		 2797#ifdef FIXNEGATIVEZERO
2798 if (*s == '-' && s[1] == '0' && !s[2])
2799 strcpy(s,"0");
2800#endif
79072805
LW		 2801 while (*s) s++;
2802#ifdef hcx
2803 if (s[-1] == '.')
46fc3d4c 2804 *--s = '\0';
79072805
LW		 2805#endif
2806 }
79072805 2807 else {
0336b60e
IZ		 2808 if (ckWARN(WARN_UNINITIALIZED)
2809 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 2810 report_uninit();
a0d0e21e 2811 *lp = 0;
25da4f38
IZ		 2812 if (SvTYPE(sv) < SVt_PV)
2813 /* Typically the caller expects that sv_any is not NULL now. */
2814 sv_upgrade(sv, SVt_PV);
a0d0e21e 2815 return "";
79072805 2816 }
463ee0b2
LW		 2817 *lp = s - SvPVX(sv);
2818 SvCUR_set(sv, *lp);
79072805 2819 SvPOK_on(sv);
1d7c1841
GS		 2820 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2821 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2822 return SvPVX(sv);
a0d0e21e
LW		 2823
2824 tokensave:
2825 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2826 /* Sneaky stuff here */
2827
2828 tokensaveref:
46fc3d4c 2829 if (!tsv)
96827780 2830 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2831 sv_2mortal(tsv);
2832 *lp = SvCUR(tsv);
2833 return SvPVX(tsv);
a0d0e21e
LW		 2834 }
2835 else {
2836 STRLEN len;
46fc3d4c 2837 char *t;
2838
2839 if (tsv) {
2840 sv_2mortal(tsv);
2841 t = SvPVX(tsv);
2842 len = SvCUR(tsv);
2843 }
2844 else {
96827780
MB		 2845 t = tmpbuf;
2846 len = strlen(tmpbuf);
46fc3d4c 2847 }
a0d0e21e 2848#ifdef FIXNEGATIVEZERO
46fc3d4c 2849 if (len == 2 && t[0] == '-' && t[1] == '0') {
2850 t = "0";
2851 len = 1;
2852 }
a0d0e21e
LW		 2853#endif
2854 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2855 *lp = len;
a0d0e21e
LW		 2856 s = SvGROW(sv, len + 1);
2857 SvCUR_set(sv, len);
46fc3d4c 2858 (void)strcpy(s, t);
6bf554b4 2859 SvPOKp_on(sv);
a0d0e21e
LW		 2860 return s;
2861 }
463ee0b2
LW		 2862}
2863
7340a771
GS		 2864char *
2865Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2866{
560a288e
GS		 2867 STRLEN n_a;
2868 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2869}
2870
2871char *
2872Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2873{
2874 return sv_2pv(sv,lp);
2875}
2876
2877char *
2878Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2879{
560a288e
GS		 2880 STRLEN n_a;
2881 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2882}
2883
2884char *
2885Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2886{
560a288e 2887 sv_utf8_upgrade(sv);
7d59b7e4 2888 return SvPV(sv,*lp);
7340a771 2889}
1c846c1f 2890
463ee0b2
LW		 2891/* This function is only called on magical items */
2892bool
864dbfa3 2893Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2894{
8990e307 2895 if (SvGMAGICAL(sv))
463ee0b2
LW		 2896 mg_get(sv);
2897
a0d0e21e
LW		 2898 if (!SvOK(sv))
2899 return 0;
2900 if (SvROK(sv)) {
a0d0e21e 2901 SV* tmpsv;
1554e226
DC		 2902 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2903 (SvRV(tmpsv) != SvRV(sv)))
9e7bc3e8 2904 return SvTRUE(tmpsv);
a0d0e21e
LW		 2905 return SvRV(sv) != 0;
2906 }
463ee0b2 2907 if (SvPOKp(sv)) {
11343788
MB		 2908 register XPV* Xpvtmp;
2909 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2910 (*Xpvtmp->xpv_pv > '0' ||
2911 Xpvtmp->xpv_cur > 1 ||
2912 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2913 return 1;
2914 else
2915 return 0;
2916 }
2917 else {
2918 if (SvIOKp(sv))
2919 return SvIVX(sv) != 0;
2920 else {
2921 if (SvNOKp(sv))
2922 return SvNVX(sv) != 0.0;
2923 else
2924 return FALSE;
2925 }
2926 }
79072805
LW		 2927}
2928
c461cf8f
JH		 2929/*
2930=for apidoc sv_utf8_upgrade
2931
2932Convert the PV of an SV to its UTF8-encoded form.
2933
2934=cut
2935*/
2936
560a288e
GS		 2937void
2938Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2939{
511c2ff0
NIS		 2940 char *s, *t, *e;
2941 int hibit = 0;
560a288e 2942
0c981600 2943 if (!sv || !SvPOK(sv) || SvUTF8(sv))
560a288e
GS		 2944 return;
2945
40826f67
JH		 2946 /* This function could be much more efficient if we had a FLAG in SVs
2947 * to signal if there are any hibit chars in the PV.
511c2ff0 2948 * Given that there isn't make loop fast as possible
560a288e 2949 */
511c2ff0
NIS		 2950 s = SvPVX(sv);
2951 e = SvEND(sv);
2952 t = s;
2953 while (t < e) {
fd400ab9 2954 if ((hibit = UTF8_IS_CONTINUED(*t++)))
8a818333 2955 break;
8a818333 2956 }
560a288e 2957
40826f67 2958 if (hibit) {
8a818333 2959 STRLEN len;
652088fc 2960
8a818333 2961 if (SvREADONLY(sv) && SvFAKE(sv)) {
8a818333
NIS		 2962 sv_force_normal(sv);
2963 s = SvPVX(sv);
2964 }
2965 len = SvCUR(sv) + 1; /* Plus the \0 */
00df9076 2966 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
841d7a39 2967 SvCUR(sv) = len - 1;
511c2ff0
NIS		 2968 if (SvLEN(sv) != 0)
2969 Safefree(s); /* No longer using what was there before. */
841d7a39 2970 SvLEN(sv) = len; /* No longer know the real size. */
560a288e
GS		 2971 SvUTF8_on(sv);
2972 }
2973}
2974
c461cf8f
JH		 2975/*
2976=for apidoc sv_utf8_downgrade
2977
2978Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2979This may not be possible if the PV contains non-byte encoding characters;
2980if this is the case, either returns false or, if C<fail_ok> is not
2981true, croaks.
2982
2983=cut
2984*/
2985
560a288e
GS		 2986bool
2987Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2988{
2989 if (SvPOK(sv) && SvUTF8(sv)) {
fa301091 2990 if (SvCUR(sv)) {
652088fc
JH		 2991 char *s;
2992 STRLEN len;
fa301091 2993
652088fc
JH		 2994 if (SvREADONLY(sv) && SvFAKE(sv))
2995 sv_force_normal(sv);
2996 s = SvPV(sv, len);
2997 if (!utf8_to_bytes((U8*)s, &len)) {
fa301091
JH		 2998 if (fail_ok)
2999 return FALSE;
3000 else {
3001 if (PL_op)
3002 Perl_croak(aTHX_ "Wide character in %s",
3003 PL_op_desc[PL_op->op_type]);
3004 else
3005 Perl_croak(aTHX_ "Wide character");
3006 }
4b3603a4 3007 }
fa301091 3008 SvCUR(sv) = len;
67e989fb 3009 }
9f9ab905 3010 SvUTF8_off(sv);
560a288e 3011 }
fa301091 3012
560a288e
GS		 3013 return TRUE;
3014}
3015
c461cf8f
JH		 3016/*
3017=for apidoc sv_utf8_encode
3018
3019Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
1c846c1f 3020flag so that it looks like bytes again. Nothing calls this.
c461cf8f
JH		 3021
3022=cut
3023*/
3024
560a288e
GS		 3025void
3026Perl_sv_utf8_encode(pTHX_ register SV *sv)
3027{
3028 sv_utf8_upgrade(sv);
3029 SvUTF8_off(sv);
3030}
3031
3032bool
3033Perl_sv_utf8_decode(pTHX_ register SV *sv)
3034{
3035 if (SvPOK(sv)) {
3036 char *c;
511c2ff0 3037 char *e;
560a288e
GS		 3038 bool has_utf = FALSE;
3039 if (!sv_utf8_downgrade(sv, TRUE))
3040 return FALSE;
3041
3042 /* it is actually just a matter of turning the utf8 flag on, but
3043 * we want to make sure everything inside is valid utf8 first.
3044 */
3045 c = SvPVX(sv);
00df9076 3046 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
67e989fb 3047 return FALSE;
511c2ff0
NIS		 3048 e = SvEND(sv);
3049 while (c < e) {
fd400ab9 3050 if (UTF8_IS_CONTINUED(*c++)) {
67e989fb
JH		 3051 SvUTF8_on(sv);
3052 break;
3053 }
560a288e 3054 }
560a288e
GS		 3055 }
3056 return TRUE;
3057}
3058
3059
79072805 3060/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 3061 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 3062 * as temporary.
3063 */
3064
954c1994
GS		 3065/*
3066=for apidoc sv_setsv
3067
3068Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
3069The source SV may be destroyed if it is mortal. Does not handle 'set'
3070magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
3071C<sv_setsv_mg>.
3072
3073=cut
3074*/
3075
79072805 3076void
864dbfa3 3077Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 3078{
8990e307
LW		 3079 register U32 sflags;
3080 register int dtype;
3081 register int stype;
463ee0b2 3082
79072805
LW		 3083 if (sstr == dstr)
3084 return;
2213622d 3085 SV_CHECK_THINKFIRST(dstr);
79072805 3086 if (!sstr)
3280af22 3087 sstr = &PL_sv_undef;
8990e307
LW		 3088 stype = SvTYPE(sstr);
3089 dtype = SvTYPE(dstr);
79072805 3090
a0d0e21e 3091 SvAMAGIC_off(dstr);
9e7bc3e8 3092
463ee0b2 3093 /* There's a lot of redundancy below but we're going for speed here */
79072805 3094
8990e307 3095 switch (stype) {
79072805 3096 case SVt_NULL:
aece5585 3097 undef_sstr:
20408e3c
GS		 3098 if (dtype != SVt_PVGV) {
3099 (void)SvOK_off(dstr);
3100 return;
3101 }
3102 break;
463ee0b2 3103 case SVt_IV:
aece5585
GA		 3104 if (SvIOK(sstr)) {
3105 switch (dtype) {
3106 case SVt_NULL:
8990e307 3107 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 3108 break;
3109 case SVt_NV:
8990e307 3110 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 3111 break;
3112 case SVt_RV:
3113 case SVt_PV:
a0d0e21e 3114 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 3115 break;
3116 }
3117 (void)SvIOK_only(dstr);
3118 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 3119 if (SvIsUV(sstr))
3120 SvIsUV_on(dstr);
27c9684d
AP		 3121 if (SvTAINTED(sstr))
3122 SvTAINT(dstr);
aece5585 3123 return;
8990e307 3124 }
aece5585
GA		 3125 goto undef_sstr;
3126
463ee0b2 3127 case SVt_NV:
aece5585
GA		 3128 if (SvNOK(sstr)) {
3129 switch (dtype) {
3130 case SVt_NULL:
3131 case SVt_IV:
8990e307 3132 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 3133 break;
3134 case SVt_RV:
3135 case SVt_PV:
3136 case SVt_PVIV:
a0d0e21e 3137 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 3138 break;
3139 }
3140 SvNVX(dstr) = SvNVX(sstr);
3141 (void)SvNOK_only(dstr);
27c9684d
AP		 3142 if (SvTAINTED(sstr))
3143 SvTAINT(dstr);
aece5585 3144 return;
8990e307 3145 }
aece5585
GA		 3146 goto undef_sstr;
3147
ed6116ce 3148 case SVt_RV:
8990e307 3149 if (dtype < SVt_RV)
ed6116ce 3150 sv_upgrade(dstr, SVt_RV);
c07a80fd 3151 else if (dtype == SVt_PVGV &&
3152 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
3153 sstr = SvRV(sstr);
a5f75d66 3154 if (sstr == dstr) {
1d7c1841
GS		 3155 if (GvIMPORTED(dstr) != GVf_IMPORTED
3156 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3157 {
a5f75d66 3158 GvIMPORTED_on(dstr);
1d7c1841 3159 }
a5f75d66
AD		 3160 GvMULTI_on(dstr);
3161 return;
3162 }
c07a80fd 3163 goto glob_assign;
3164 }
ed6116ce 3165 break;
463ee0b2 3166 case SVt_PV:
fc36a67e 3167 case SVt_PVFM:
8990e307 3168 if (dtype < SVt_PV)
463ee0b2 3169 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 3170 break;
3171 case SVt_PVIV:
8990e307 3172 if (dtype < SVt_PVIV)
463ee0b2 3173 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 3174 break;
3175 case SVt_PVNV:
8990e307 3176 if (dtype < SVt_PVNV)
463ee0b2 3177 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 3178 break;
4633a7c4
LW		 3179 case SVt_PVAV:
3180 case SVt_PVHV:
3181 case SVt_PVCV:
4633a7c4 3182 case SVt_PVIO:
533c011a 3183 if (PL_op)
cea2e8a9 3184 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 3185 PL_op_name[PL_op->op_type]);
4633a7c4 3186 else
cea2e8a9 3187 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 3188 break;
3189
79072805 3190 case SVt_PVGV:
8990e307 3191 if (dtype <= SVt_PVGV) {
c07a80fd 3192 glob_assign:
a5f75d66 3193 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 3194 char *name = GvNAME(sstr);
3195 STRLEN len = GvNAMELEN(sstr);
463ee0b2 3196 sv_upgrade(dstr, SVt_PVGV);
6662521e 3197 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 3198 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 3199 GvNAME(dstr) = savepvn(name, len);
3200 GvNAMELEN(dstr) = len;
3201 SvFAKE_on(dstr); /* can coerce to non-glob */
3202 }
7bac28a0 3203 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 3204 else if (PL_curstackinfo->si_type == PERLSI_SORT
3205 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 3206 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 3207 GvNAME(dstr));
a0d0e21e 3208 (void)SvOK_off(dstr);
a5f75d66 3209 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 3210 gp_free((GV*)dstr);
79072805 3211 GvGP(dstr) = gp_ref(GvGP(sstr));
27c9684d
AP		 3212 if (SvTAINTED(sstr))
3213 SvTAINT(dstr);
1d7c1841
GS		 3214 if (GvIMPORTED(dstr) != GVf_IMPORTED
3215 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3216 {
a5f75d66 3217 GvIMPORTED_on(dstr);
1d7c1841 3218 }
a5f75d66 3219 GvMULTI_on(dstr);
79072805
LW		 3220 return;
3221 }
3222 /* FALL THROUGH */
3223
3224 default:
973f89ab
CS		 3225 if (SvGMAGICAL(sstr)) {
3226 mg_get(sstr);
3227 if (SvTYPE(sstr) != stype) {
3228 stype = SvTYPE(sstr);
3229 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
3230 goto glob_assign;
3231 }
3232 }
ded42b9f 3233 if (stype == SVt_PVLV)
6fc92669 3234 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 3235 else
6fc92669 3236 (void)SvUPGRADE(dstr, stype);
79072805
LW		 3237 }
3238
8990e307
LW		 3239 sflags = SvFLAGS(sstr);
3240
3241 if (sflags & SVf_ROK) {
3242 if (dtype >= SVt_PV) {
3243 if (dtype == SVt_PVGV) {
3244 SV *sref = SvREFCNT_inc(SvRV(sstr));
3245 SV *dref = 0;
a5f75d66 3246 int intro = GvINTRO(dstr);
a0d0e21e
LW		 3247
3248 if (intro) {
3249 GP *gp;
1d7c1841 3250 gp_free((GV*)dstr);
a5f75d66 3251 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 3252 Newz(602,gp, 1, GP);
44a8e56a 3253 GvGP(dstr) = gp_ref(gp);
a0d0e21e 3254 GvSV(dstr) = NEWSV(72,0);
1d7c1841 3255 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 3256 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 3257 }
a5f75d66 3258 GvMULTI_on(dstr);
8990e307
LW		 3259 switch (SvTYPE(sref)) {
3260 case SVt_PVAV:
a0d0e21e
LW		 3261 if (intro)
3262 SAVESPTR(GvAV(dstr));
3263 else
3264 dref = (SV*)GvAV(dstr);
8990e307 3265 GvAV(dstr) = (AV*)sref;
39bac7f7 3266 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 3267 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3268 {
a5f75d66 3269 GvIMPORTED_AV_on(dstr);
1d7c1841 3270 }
8990e307
LW		 3271 break;
3272 case SVt_PVHV:
a0d0e21e
LW		 3273 if (intro)
3274 SAVESPTR(GvHV(dstr));
3275 else
3276 dref = (SV*)GvHV(dstr);
8990e307 3277 GvHV(dstr) = (HV*)sref;
39bac7f7 3278 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 3279 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3280 {
a5f75d66 3281 GvIMPORTED_HV_on(dstr);
1d7c1841 3282 }
8990e307
LW		 3283 break;
3284 case SVt_PVCV:
8ebc5c01 3285 if (intro) {
3286 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
3287 SvREFCNT_dec(GvCV(dstr));
3288 GvCV(dstr) = Nullcv;
68dc0745 3289 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 3290 PL_sub_generation++;
8ebc5c01 3291 }
a0d0e21e 3292 SAVESPTR(GvCV(dstr));
8ebc5c01 3293 }
68dc0745 3294 else
3295 dref = (SV*)GvCV(dstr);
3296 if (GvCV(dstr) != (CV*)sref) {
748a9306 3297 CV* cv = GvCV(dstr);
4633a7c4 3298 if (cv) {
68dc0745 3299 if (!GvCVGEN((GV*)dstr) &&
3300 (CvROOT(cv) || CvXSUB(cv)))
3301 {
beab0874 3302 SV *const_sv;
7bac28a0 3303 /* ahem, death to those who redefine
3304 * active sort subs */
3280af22
NIS		 3305 if (PL_curstackinfo->si_type == PERLSI_SORT &&
3306 PL_sortcop == CvSTART(cv))
1c846c1f 3307 Perl_croak(aTHX_
7bac28a0 3308 "Can't redefine active sort subroutine %s",
3309 GvENAME((GV*)dstr));
beab0874
JT		 3310 /* Redefining a sub - warning is mandatory if
3311 it was a const and its value changed. */
3312 if (ckWARN(WARN_REDEFINE)
3313 || (CvCONST(cv)
3314 && (!CvCONST((CV*)sref)
3315 || sv_cmp(cv_const_sv(cv),
3316 cv_const_sv((CV*)sref)))))
3317 {
3318 Perl_warner(aTHX_ WARN_REDEFINE,
3319 CvCONST(cv)
3320 ? "Constant subroutine %s redefined"
47deb5e7 3321 : "Subroutine %s redefined",
beab0874
JT		 3322 GvENAME((GV*)dstr));
3323 }
9607fc9c 3324 }
3fe9a6f1 3325 cv_ckproto(cv, (GV*)dstr,
3326 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 3327 }
a5f75d66 3328 GvCV(dstr) = (CV*)sref;
7a4c00b4 3329 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 3330 GvASSUMECV_on(dstr);
3280af22 3331 PL_sub_generation++;
a5f75d66 3332 }
39bac7f7 3333 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 3334 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3335 {
a5f75d66 3336 GvIMPORTED_CV_on(dstr);
1d7c1841 3337 }
8990e307 3338 break;
91bba347
LW		 3339 case SVt_PVIO:
3340 if (intro)
3341 SAVESPTR(GvIOp(dstr));
3342 else
3343 dref = (SV*)GvIOp(dstr);
3344 GvIOp(dstr) = (IO*)sref;
3345 break;
f4d13ee9
JH		 3346 case SVt_PVFM:
3347 if (intro)
3348 SAVESPTR(GvFORM(dstr));
3349 else
3350 dref = (SV*)GvFORM(dstr);
3351 GvFORM(dstr) = (CV*)sref;
3352 break;
8990e307 3353 default:
a0d0e21e
LW		 3354 if (intro)
3355 SAVESPTR(GvSV(dstr));
3356 else
3357 dref = (SV*)GvSV(dstr);
8990e307 3358 GvSV(dstr) = sref;
39bac7f7 3359 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 3360 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
3361 {
a5f75d66 3362 GvIMPORTED_SV_on(dstr);
1d7c1841 3363 }
8990e307
LW		 3364 break;
3365 }
3366 if (dref)
3367 SvREFCNT_dec(dref);
a0d0e21e
LW		 3368 if (intro)
3369 SAVEFREESV(sref);
27c9684d
AP		 3370 if (SvTAINTED(sstr))
3371 SvTAINT(dstr);
8990e307
LW		 3372 return;
3373 }
a0d0e21e 3374 if (SvPVX(dstr)) {
760ac839 3375 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 3376 if (SvLEN(dstr))
3377 Safefree(SvPVX(dstr));
a0d0e21e
LW		 3378 SvLEN(dstr)=SvCUR(dstr)=0;
3379 }
8990e307 3380 }
a0d0e21e 3381 (void)SvOK_off(dstr);
8990e307 3382 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 3383 SvROK_on(dstr);
8990e307 3384 if (sflags & SVp_NOK) {
3332b3c1
JH		 3385 SvNOKp_on(dstr);
3386 /* Only set the public OK flag if the source has public OK. */
3387 if (sflags & SVf_NOK)
3388 SvFLAGS(dstr) |= SVf_NOK;
ed6116ce
LW		 3389 SvNVX(dstr) = SvNVX(sstr);
3390 }
8990e307 3391 if (sflags & SVp_IOK) {
3332b3c1
JH		 3392 (void)SvIOKp_on(dstr);
3393 if (sflags & SVf_IOK)
3394 SvFLAGS(dstr) |= SVf_IOK;
2b1c7e3e 3395 if (sflags & SVf_IVisUV)
25da4f38 3396 SvIsUV_on(dstr);
3332b3c1 3397 SvIVX(dstr) = SvIVX(sstr);
ed6116ce 3398 }
a0d0e21e
LW		 3399 if (SvAMAGIC(sstr)) {
3400 SvAMAGIC_on(dstr);
3401 }
ed6116ce 3402 }
8990e307 3403 else if (sflags & SVp_POK) {
79072805
LW		 3404
3405 /*
3406 * Check to see if we can just swipe the string. If so, it's a
3407 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 3408 * It might even be a win on short strings if SvPVX(dstr)
3409 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 3410 */
3411
ff68c719 3412 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 3413 SvREFCNT(sstr) == 1 && /* and no other references to it? */
1c846c1f 3414 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
4c8f17b9
BH		 3415 SvLEN(sstr) && /* and really is a string */
3416 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
a5f75d66 3417 {
adbc6bb1 3418 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 3419 if (SvOOK(dstr)) {
3420 SvFLAGS(dstr) &= ~SVf_OOK;
3421 Safefree(SvPVX(dstr) - SvIVX(dstr));
3422 }
50483b2c 3423 else if (SvLEN(dstr))
a5f75d66 3424 Safefree(SvPVX(dstr));
79072805 3425 }
a5f75d66 3426 (void)SvPOK_only(dstr);
463ee0b2 3427 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 3428 SvLEN_set(dstr, SvLEN(sstr));
3429 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 3430
79072805 3431 SvTEMP_off(dstr);
2b1c7e3e 3432 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 3433 SvPV_set(sstr, Nullch);
3434 SvLEN_set(sstr, 0);
a5f75d66
AD		 3435 SvCUR_set(sstr, 0);
3436 SvTEMP_off(sstr);
79072805
LW		 3437 }
3438 else { /* have to copy actual string */
8990e307
LW		 3439 STRLEN len = SvCUR(sstr);
3440
3441 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
3442 Move(SvPVX(sstr),SvPVX(dstr),len,char);
3443 SvCUR_set(dstr, len);
3444 *SvEND(dstr) = '\0';
a0d0e21e 3445 (void)SvPOK_only(dstr);
79072805 3446 }
9aa983d2 3447 if (sflags & SVf_UTF8)
a7cb1f99 3448 SvUTF8_on(dstr);
79072805 3449 /*SUPPRESS 560*/
8990e307 3450 if (sflags & SVp_NOK) {
3332b3c1
JH		 3451 SvNOKp_on(dstr);
3452 if (sflags & SVf_NOK)
3453 SvFLAGS(dstr) |= SVf_NOK;
463ee0b2 3454 SvNVX(dstr) = SvNVX(sstr);
79072805 3455 }
8990e307 3456 if (sflags & SVp_IOK) {
3332b3c1
JH		 3457 (void)SvIOKp_on(dstr);
3458 if (sflags & SVf_IOK)
3459 SvFLAGS(dstr) |= SVf_IOK;
2b1c7e3e 3460 if (sflags & SVf_IVisUV)
25da4f38 3461 SvIsUV_on(dstr);
463ee0b2 3462 SvIVX(dstr) = SvIVX(sstr);
79072805
LW		 3463 }
3464 }
8990e307 3465 else if (sflags & SVp_IOK) {
3332b3c1
JH		 3466 if (sflags & SVf_IOK)
3467 (void)SvIOK_only(dstr);
3468 else {
3469 SvOK_off(dstr);
3470 SvIOKp_on(dstr);
3471 }
3472 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 3473 if (sflags & SVf_IVisUV)
25da4f38 3474 SvIsUV_on(dstr);
3332b3c1
JH		 3475 SvIVX(dstr) = SvIVX(sstr);
3476 if (sflags & SVp_NOK) {
3477 if (sflags & SVf_NOK)
3478 (void)SvNOK_on(dstr);
3479 else
3480 (void)SvNOKp_on(dstr);
3481 SvNVX(dstr) = SvNVX(sstr);
3482 }
3483 }
3484 else if (sflags & SVp_NOK) {
3485 if (sflags & SVf_NOK)
3486 (void)SvNOK_only(dstr);
3487 else {
3488 SvOK_off(dstr);
3489 SvNOKp_on(dstr);
3490 }
3491 SvNVX(dstr) = SvNVX(sstr);
79072805
LW		 3492 }
3493 else {
20408e3c 3494 if (dtype == SVt_PVGV) {
e476b1b5
GS		 3495 if (ckWARN(WARN_MISC))
3496 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 3497 }
3498 else
3499 (void)SvOK_off(dstr);
a0d0e21e 3500 }
27c9684d
AP		 3501 if (SvTAINTED(sstr))
3502 SvTAINT(dstr);
79072805
LW		 3503}
3504
954c1994
GS		 3505/*
3506=for apidoc sv_setsv_mg
3507
3508Like C<sv_setsv>, but also handles 'set' magic.
3509
3510=cut
3511*/
3512
79072805 3513void
864dbfa3 3514Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3515{
3516 sv_setsv(dstr,sstr);
3517 SvSETMAGIC(dstr);
3518}
3519
954c1994
GS		 3520/*
3521=for apidoc sv_setpvn
3522
3523Copies a string into an SV. The C<len> parameter indicates the number of
3524bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
3525
3526=cut
3527*/
3528
ef50df4b 3529void
864dbfa3 3530Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3531{
c6f8c383 3532 register char *dptr;
22c522df 3533
2213622d 3534 SV_CHECK_THINKFIRST(sv);
463ee0b2 3535 if (!ptr) {
a0d0e21e 3536 (void)SvOK_off(sv);
463ee0b2
LW		 3537 return;
3538 }
22c522df
JH		 3539 else {
3540 /* len is STRLEN which is unsigned, need to copy to signed */
3541 IV iv = len;
3542 assert(iv >= 0);
3543 }
6fc92669 3544 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3545
79072805 3546 SvGROW(sv, len + 1);
c6f8c383
GA		 3547 dptr = SvPVX(sv);
3548 Move(ptr,dptr,len,char);
3549 dptr[len] = '\0';
79072805 3550 SvCUR_set(sv, len);
1aa99e6b 3551 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3552 SvTAINT(sv);
79072805
LW		 3553}
3554
954c1994
GS		 3555/*
3556=for apidoc sv_setpvn_mg
3557
3558Like C<sv_setpvn>, but also handles 'set' magic.
3559
3560=cut
3561*/
3562
79072805 3563void
864dbfa3 3564Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3565{
3566 sv_setpvn(sv,ptr,len);
3567 SvSETMAGIC(sv);
3568}
3569
954c1994
GS		 3570/*
3571=for apidoc sv_setpv
3572
3573Copies a string into an SV. The string must be null-terminated. Does not
3574handle 'set' magic. See C<sv_setpv_mg>.
3575
3576=cut
3577*/
3578
ef50df4b 3579void
864dbfa3 3580Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3581{
3582 register STRLEN len;
3583
2213622d 3584 SV_CHECK_THINKFIRST(sv);
463ee0b2 3585 if (!ptr) {
a0d0e21e 3586 (void)SvOK_off(sv);
463ee0b2
LW		 3587 return;
3588 }
79072805 3589 len = strlen(ptr);
6fc92669 3590 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3591
79072805 3592 SvGROW(sv, len + 1);
463ee0b2 3593 Move(ptr,SvPVX(sv),len+1,char);
79072805 3594 SvCUR_set(sv, len);
1aa99e6b 3595 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2
LW		 3596 SvTAINT(sv);
3597}
3598
954c1994
GS		 3599/*
3600=for apidoc sv_setpv_mg
3601
3602Like C<sv_setpv>, but also handles 'set' magic.
3603
3604=cut
3605*/
3606
463ee0b2 3607void
864dbfa3 3608Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3609{
3610 sv_setpv(sv,ptr);
3611 SvSETMAGIC(sv);
3612}
3613
954c1994
GS		 3614/*
3615=for apidoc sv_usepvn
3616
3617Tells an SV to use C<ptr> to find its string value. Normally the string is
1c846c1f 3618stored inside the SV but sv_usepvn allows the SV to use an outside string.
954c1994
GS		 3619The C<ptr> should point to memory that was allocated by C<malloc>. The
3620string length, C<len>, must be supplied. This function will realloc the
3621memory pointed to by C<ptr>, so that pointer should not be freed or used by
3622the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3623See C<sv_usepvn_mg>.
3624
3625=cut
3626*/
3627
ef50df4b 3628void
864dbfa3 3629Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3630{
2213622d 3631 SV_CHECK_THINKFIRST(sv);
c6f8c383 3632 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3633 if (!ptr) {
a0d0e21e 3634 (void)SvOK_off(sv);
463ee0b2
LW		 3635 return;
3636 }
a0ed51b3 3637 (void)SvOOK_off(sv);
50483b2c 3638 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3639 Safefree(SvPVX(sv));
3640 Renew(ptr, len+1, char);
3641 SvPVX(sv) = ptr;
3642 SvCUR_set(sv, len);
3643 SvLEN_set(sv, len+1);
3644 *SvEND(sv) = '\0';
1aa99e6b 3645 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3646 SvTAINT(sv);
79072805
LW		 3647}
3648
954c1994
GS		 3649/*
3650=for apidoc sv_usepvn_mg
3651
3652Like C<sv_usepvn>, but also handles 'set' magic.
3653
3654=cut
3655*/
3656
ef50df4b 3657void
864dbfa3 3658Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3659{
51c1089b 3660 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3661 SvSETMAGIC(sv);
3662}
3663
6fc92669 3664void
840a7b70 3665Perl_sv_force_normal_flags(pTHX_ register SV *sv, U32 flags)
0f15f207 3666{
2213622d 3667 if (SvREADONLY(sv)) {
1c846c1f
NIS		 3668 if (SvFAKE(sv)) {
3669 char *pvx = SvPVX(sv);
3670 STRLEN len = SvCUR(sv);
3671 U32 hash = SvUVX(sv);
3672 SvGROW(sv, len + 1);
3673 Move(pvx,SvPVX(sv),len,char);
3674 *SvEND(sv) = '\0';
3675 SvFAKE_off(sv);
3676 SvREADONLY_off(sv);
c3654f1a 3677 unsharepvn(pvx,SvUTF8(sv)?-len:len,hash);
1c846c1f
NIS		 3678 }
3679 else if (PL_curcop != &PL_compiling)
cea2e8a9 3680 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3681 }
2213622d 3682 if (SvROK(sv))
840a7b70 3683 sv_unref_flags(sv, flags);
6fc92669
GS		 3684 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3685 sv_unglob(sv);
0f15f207 3686}
1c846c1f 3687
840a7b70
IZ		 3688void
3689Perl_sv_force_normal(pTHX_ register SV *sv)
3690{
3691 sv_force_normal_flags(sv, 0);
3692}
3693
954c1994
GS		 3694/*
3695=for apidoc sv_chop
3696
1c846c1f 3697Efficient removal of characters from the beginning of the string buffer.
954c1994
GS		 3698SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3699the string buffer. The C<ptr> becomes the first character of the adjusted
3700string.
3701
3702=cut
3703*/
3704
79072805 3705void
864dbfa3 3706Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
1c846c1f
NIS		 3707
3708
79072805
LW		 3709{
3710 register STRLEN delta;
3711
a0d0e21e 3712 if (!ptr || !SvPOKp(sv))
79072805 3713 return;
2213622d 3714 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3715 if (SvTYPE(sv) < SVt_PVIV)
3716 sv_upgrade(sv,SVt_PVIV);
3717
3718 if (!SvOOK(sv)) {
50483b2c
JD		 3719 if (!SvLEN(sv)) { /* make copy of shared string */
3720 char *pvx = SvPVX(sv);
3721 STRLEN len = SvCUR(sv);
3722 SvGROW(sv, len + 1);
3723 Move(pvx,SvPVX(sv),len,char);
3724 *SvEND(sv) = '\0';
3725 }
463ee0b2 3726 SvIVX(sv) = 0;
79072805
LW		 3727 SvFLAGS(sv) |= SVf_OOK;
3728 }
25da4f38 3729 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3730 delta = ptr - SvPVX(sv);
79072805
LW		 3731 SvLEN(sv) -= delta;
3732 SvCUR(sv) -= delta;
463ee0b2
LW		 3733 SvPVX(sv) += delta;
3734 SvIVX(sv) += delta;
79072805
LW		 3735}
3736
954c1994
GS		 3737/*
3738=for apidoc sv_catpvn
3739
3740Concatenates the string onto the end of the string which is in the SV. The
3741C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3742'set' magic. See C<sv_catpvn_mg>.
3743
3744=cut
3745*/
3746
79072805 3747void
864dbfa3 3748Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3749{
463ee0b2 3750 STRLEN tlen;
748a9306 3751 char *junk;
a0d0e21e 3752
748a9306 3753 junk = SvPV_force(sv, tlen);
463ee0b2 3754 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3755 if (ptr == junk)
3756 ptr = SvPVX(sv);
463ee0b2 3757 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3758 SvCUR(sv) += len;
3759 *SvEND(sv) = '\0';
d41ff1b8 3760 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3761 SvTAINT(sv);
79072805
LW		 3762}
3763
954c1994
GS		 3764/*
3765=for apidoc sv_catpvn_mg
3766
3767Like C<sv_catpvn>, but also handles 'set' magic.
3768
3769=cut
3770*/
3771
79072805 3772void
864dbfa3 3773Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3774{
3775 sv_catpvn(sv,ptr,len);
3776 SvSETMAGIC(sv);
3777}
3778
954c1994
GS		 3779/*
3780=for apidoc sv_catsv
3781
13e8c8e3
JH		 3782Concatenates the string from SV C<ssv> onto the end of the string in
3783SV C<dsv>. Modifies C<dsv> but not C<ssv>. Handles 'get' magic, but
3784not 'set' magic. See C<sv_catsv_mg>.
954c1994 3785
13e8c8e3 3786=cut */
954c1994 3787
ef50df4b 3788void
46199a12 3789Perl_sv_catsv(pTHX_ SV *dsv, register SV *ssv)
79072805 3790{
13e8c8e3
JH		 3791 char *spv;
3792 STRLEN slen;
46199a12 3793 if (!ssv)
79072805 3794 return;
46199a12
JH		 3795 if ((spv = SvPV(ssv, slen))) {
3796 bool dutf8 = DO_UTF8(dsv);
3797 bool sutf8 = DO_UTF8(ssv);
13e8c8e3
JH		 3798
3799 if (dutf8 == sutf8)
46199a12 3800 sv_catpvn(dsv,spv,slen);
13e8c8e3
JH		 3801 else {
3802 if (dutf8) {
46199a12
JH		 3803 /* Not modifying source SV, so taking a temporary copy. */
3804 SV* csv = sv_2mortal(newSVsv(ssv));
13e8c8e3
JH		 3805 char *cpv;
3806 STRLEN clen;
3807
46199a12
JH		 3808 sv_utf8_upgrade(csv);
3809 cpv = SvPV(csv,clen);
3810 sv_catpvn(dsv,cpv,clen);
13e8c8e3
JH		 3811 }
3812 else {
46199a12
JH		 3813 sv_utf8_upgrade(dsv);
3814 sv_catpvn(dsv,spv,slen);
3815 SvUTF8_on(dsv); /* If dsv has no wide characters. */
13e8c8e3 3816 }
e84ff256 3817 }
560a288e 3818 }
79072805
LW		 3819}
3820
954c1994
GS		 3821/*
3822=for apidoc sv_catsv_mg
3823
3824Like C<sv_catsv>, but also handles 'set' magic.
3825
3826=cut
3827*/
3828
79072805 3829void
46199a12 3830Perl_sv_catsv_mg(pTHX_ SV *dsv, register SV *ssv)
ef50df4b 3831{
46199a12
JH		 3832 sv_catsv(dsv,ssv);
3833 SvSETMAGIC(dsv);
ef50df4b
GS		 3834}
3835
954c1994
GS		 3836/*
3837=for apidoc sv_catpv
3838
3839Concatenates the string onto the end of the string which is in the SV.
3840Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3841
3842=cut
3843*/
3844
ef50df4b 3845void
0c981600 3846Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3847{
3848 register STRLEN len;
463ee0b2 3849 STRLEN tlen;
748a9306 3850 char *junk;
79072805 3851
0c981600 3852 if (!ptr)
79072805 3853 return;
748a9306 3854 junk = SvPV_force(sv, tlen);
0c981600 3855 len = strlen(ptr);
463ee0b2 3856 SvGROW(sv, tlen + len + 1);
0c981600
JH		 3857 if (ptr == junk)
3858 ptr = SvPVX(sv);
3859 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3860 SvCUR(sv) += len;
d41ff1b8 3861 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3862 SvTAINT(sv);
79072805
LW		 3863}
3864
954c1994
GS		 3865/*
3866=for apidoc sv_catpv_mg
3867
3868Like C<sv_catpv>, but also handles 'set' magic.
3869
3870=cut
3871*/
3872
ef50df4b 3873void
0c981600 3874Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3875{
0c981600 3876 sv_catpv(sv,ptr);
ef50df4b
GS		 3877 SvSETMAGIC(sv);
3878}
3879
79072805 3880SV *
864dbfa3 3881Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3882{
3883 register SV *sv;
1c846c1f 3884
4561caa4 3885 new_SV(sv);
79072805
LW		 3886 if (len) {
3887 sv_upgrade(sv, SVt_PV);
3888 SvGROW(sv, len + 1);
3889 }
3890 return sv;
3891}
3892
1edc1566 3893/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3894
954c1994
GS		 3895/*
3896=for apidoc sv_magic
3897
3898Adds magic to an SV.
3899
3900=cut
3901*/
3902
79072805 3903void
864dbfa3 3904Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3905{
3906 MAGIC* mg;
1c846c1f 3907
0f15f207 3908 if (SvREADONLY(sv)) {
3280af22 3909 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3910 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3911 }
4633a7c4 3912 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3913 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3914 if (how == 't')
565764a8 3915 mg->mg_len |= 1;
463ee0b2 3916 return;
748a9306 3917 }
463ee0b2
LW		 3918 }
3919 else {
c6f8c383 3920 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3921 }
79072805
LW		 3922 Newz(702,mg, 1, MAGIC);
3923 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3924
79072805 3925 SvMAGIC(sv) = mg;
c277df42 3926 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3927 mg->mg_obj = obj;
85e6fe83 3928 else {
8990e307 3929 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3930 mg->mg_flags |= MGf_REFCOUNTED;
3931 }
79072805 3932 mg->mg_type = how;
565764a8 3933 mg->mg_len = namlen;
1edc1566 3934 if (name)
3935 if (namlen >= 0)
3936 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3937 else if (namlen == HEf_SVKEY)
1edc1566 3938 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
1c846c1f 3939
79072805
LW		 3940 switch (how) {
3941 case 0:
22c35a8c 3942 mg->mg_virtual = &PL_vtbl_sv;
79072805 3943 break;
a0d0e21e 3944 case 'A':
22c35a8c 3945 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3946 break;
3947 case 'a':
22c35a8c 3948 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3949 break;
3950 case 'c':
d460ef45 3951 mg->mg_virtual = &PL_vtbl_ovrld;
a0d0e21e 3952 break;
79072805 3953 case 'B':
22c35a8c 3954 mg->mg_virtual = &PL_vtbl_bm;
79072805 3955 break;
6cef1e77 3956 case 'D':
22c35a8c 3957 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3958 break;
3959 case 'd':
22c35a8c 3960 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3961 break;
79072805 3962 case 'E':
22c35a8c 3963 mg->mg_virtual = &PL_vtbl_env;
79072805 3964 break;
55497cff 3965 case 'f':
22c35a8c 3966 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3967 break;
79072805 3968 case 'e':
22c35a8c 3969 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3970 break;
93a17b20 3971 case 'g':
22c35a8c 3972 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3973 break;
463ee0b2 3974 case 'I':
22c35a8c 3975 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3976 break;
3977 case 'i':
22c35a8c 3978 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3979 break;
16660edb 3980 case 'k':
22c35a8c 3981 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3982 break;
79072805 3983 case 'L':
a0d0e21e 3984 SvRMAGICAL_on(sv);
93a17b20
LW		 3985 mg->mg_virtual = 0;
3986 break;
3987 case 'l':
22c35a8c 3988 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3989 break;
f93b4edd
MB		 3990#ifdef USE_THREADS
3991 case 'm':
22c35a8c 3992 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3993 break;
3994#endif /* USE_THREADS */
36477c24 3995#ifdef USE_LOCALE_COLLATE
bbce6d69 3996 case 'o':
22c35a8c 3997 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3998 break;
36477c24 3999#endif /* USE_LOCALE_COLLATE */
463ee0b2 4000 case 'P':
22c35a8c 4001 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 4002 break;
4003 case 'p':
a0d0e21e 4004 case 'q':
22c35a8c 4005 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 4006 break;
c277df42 4007 case 'r':
22c35a8c 4008 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 4009 break;
79072805 4010 case 'S':
22c35a8c 4011 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 4012 break;
4013 case 's':
22c35a8c 4014 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 4015 break;
463ee0b2 4016 case 't':
22c35a8c 4017 mg->mg_virtual = &PL_vtbl_taint;
565764a8 4018 mg->mg_len = 1;
463ee0b2 4019 break;
79072805 4020 case 'U':
22c35a8c 4021 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 4022 break;
4023 case 'v':
22c35a8c 4024 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 4025 break;
4026 case 'x':
22c35a8c 4027 mg->mg_virtual = &PL_vtbl_substr;
79072805 4028 break;
5f05dabc 4029 case 'y':
22c35a8c 4030 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 4031 break;
79072805 4032 case '*':
22c35a8c 4033 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 4034 break;
4035 case '#':
22c35a8c 4036 mg->mg_virtual = &PL_vtbl_arylen;
79072805 4037 break;
a0d0e21e 4038 case '.':
22c35a8c 4039 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 4040 break;
810b8aa5
GS		 4041 case '<':
4042 mg->mg_virtual = &PL_vtbl_backref;
4043 break;
4633a7c4
LW		 4044 case '~': /* Reserved for use by extensions not perl internals. */
4045 /* Useful for attaching extension internal data to perl vars. */
4046 /* Note that multiple extensions may clash if magical scalars */
4047 /* etc holding private data from one are passed to another. */
4048 SvRMAGICAL_on(sv);
a0d0e21e 4049 break;
79072805 4050 default:
cea2e8a9 4051 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 4052 }
8990e307
LW		 4053 mg_magical(sv);
4054 if (SvGMAGICAL(sv))
4055 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 4056}
4057
c461cf8f
JH		 4058/*
4059=for apidoc sv_unmagic
4060
4061Removes magic from an SV.
4062
4063=cut
4064*/
4065
463ee0b2 4066int
864dbfa3 4067Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 4068{
4069 MAGIC* mg;
4070 MAGIC** mgp;
91bba347 4071 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 4072 return 0;
4073 mgp = &SvMAGIC(sv);
4074 for (mg = *mgp; mg; mg = *mgp) {
4075 if (mg->mg_type == type) {
4076 MGVTBL* vtbl = mg->mg_virtual;
4077 *mgp = mg->mg_moremagic;
1d7c1841 4078 if (vtbl && vtbl->svt_free)
fc0dc3b3 4079 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 4080 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 4081 if (mg->mg_len >= 0)
1edc1566 4082 Safefree(mg->mg_ptr);
565764a8 4083 else if (mg->mg_len == HEf_SVKEY)
1edc1566 4084 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 4085 if (mg->mg_flags & MGf_REFCOUNTED)
4086 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 4087 Safefree(mg);
4088 }
4089 else
4090 mgp = &mg->mg_moremagic;
79072805 4091 }
91bba347 4092 if (!SvMAGIC(sv)) {
463ee0b2 4093 SvMAGICAL_off(sv);
8990e307 4094 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 4095 }
4096
4097 return 0;
79072805
LW		 4098}
4099
c461cf8f
JH		 4100/*
4101=for apidoc sv_rvweaken
4102
4103Weaken a reference.
4104
4105=cut
4106*/
4107
810b8aa5 4108SV *
864dbfa3 4109Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 4110{
4111 SV *tsv;
4112 if (!SvOK(sv)) /* let undefs pass */
4113 return sv;
4114 if (!SvROK(sv))
cea2e8a9 4115 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5 4116 else if (SvWEAKREF(sv)) {
810b8aa5 4117 if (ckWARN(WARN_MISC))
cea2e8a9 4118 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 4119 return sv;
4120 }
4121 tsv = SvRV(sv);
4122 sv_add_backref(tsv, sv);
4123 SvWEAKREF_on(sv);
1c846c1f 4124 SvREFCNT_dec(tsv);
810b8aa5
GS		 4125 return sv;
4126}
4127
4128STATIC void
cea2e8a9 4129S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 4130{
4131 AV *av;
4132 MAGIC *mg;
4133 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
4134 av = (AV*)mg->mg_obj;
4135 else {
4136 av = newAV();
4137 sv_magic(tsv, (SV*)av, '<', NULL, 0);
4138 SvREFCNT_dec(av); /* for sv_magic */
4139 }
4140 av_push(av,sv);
4141}
4142
1c846c1f 4143STATIC void
cea2e8a9 4144S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 4145{
4146 AV *av;
4147 SV **svp;
4148 I32 i;
4149 SV *tsv = SvRV(sv);
4150 MAGIC *mg;
4151 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 4152 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 4153 av = (AV *)mg->mg_obj;
4154 svp = AvARRAY(av);
4155 i = AvFILLp(av);
4156 while (i >= 0) {
4157 if (svp[i] == sv) {
4158 svp[i] = &PL_sv_undef; /* XXX */
4159 }
4160 i--;
4161 }
4162}
4163
954c1994
GS		 4164/*
4165=for apidoc sv_insert
4166
4167Inserts a string at the specified offset/length within the SV. Similar to
4168the Perl substr() function.
4169
4170=cut
4171*/
4172
79072805 4173void
864dbfa3 4174Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 4175{
4176 register char *big;
4177 register char *mid;
4178 register char *midend;
4179 register char *bigend;
4180 register I32 i;
6ff81951 4181 STRLEN curlen;
1c846c1f 4182
79072805 4183
8990e307 4184 if (!bigstr)
cea2e8a9 4185 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 4186 SvPV_force(bigstr, curlen);
60fa28ff 4187 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 4188 if (offset + len > curlen) {
4189 SvGROW(bigstr, offset+len+1);
4190 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
4191 SvCUR_set(bigstr, offset+len);
4192 }
79072805 4193
69b47968 4194 SvTAINT(bigstr);
79072805
LW		 4195 i = littlelen - len;
4196 if (i > 0) { /* string might grow */
a0d0e21e 4197 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 4198 mid = big + offset + len;
4199 midend = bigend = big + SvCUR(bigstr);
4200 bigend += i;
4201 *bigend = '\0';
4202 while (midend > mid) /* shove everything down */
4203 *--bigend = *--midend;
4204 Move(little,big+offset,littlelen,char);
4205 SvCUR(bigstr) += i;
4206 SvSETMAGIC(bigstr);
4207 return;
4208 }
4209 else if (i == 0) {
463ee0b2 4210 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 4211 SvSETMAGIC(bigstr);
4212 return;
4213 }
4214
463ee0b2 4215 big = SvPVX(bigstr);
79072805
LW		 4216 mid = big + offset;
4217 midend = mid + len;
4218 bigend = big + SvCUR(bigstr);
4219
4220 if (midend > bigend)
cea2e8a9 4221 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 4222
4223 if (mid - big > bigend - midend) { /* faster to shorten from end */
4224 if (littlelen) {
4225 Move(little, mid, littlelen,char);
4226 mid += littlelen;
4227 }
4228 i = bigend - midend;
4229 if (i > 0) {
4230 Move(midend, mid, i,char);
4231 mid += i;
4232 }
4233 *mid = '\0';
4234 SvCUR_set(bigstr, mid - big);
4235 }
4236 /*SUPPRESS 560*/
155aba94 4237 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 4238 midend -= littlelen;
4239 mid = midend;
4240 sv_chop(bigstr,midend-i);
4241 big += i;
4242 while (i--)
4243 *--midend = *--big;
4244 if (littlelen)
4245 Move(little, mid, littlelen,char);
4246 }
4247 else if (littlelen) {
4248 midend -= littlelen;
4249 sv_chop(bigstr,midend);
4250 Move(little,midend,littlelen,char);
4251 }
4252 else {
4253 sv_chop(bigstr,midend);
4254 }
4255 SvSETMAGIC(bigstr);
4256}
4257
c461cf8f
JH		 4258/*
4259=for apidoc sv_replace
4260
4261Make the first argument a copy of the second, then delete the original.
4262
4263=cut
4264*/
79072805
LW		 4265
4266void
864dbfa3 4267Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805
LW		 4268{
4269 U32 refcnt = SvREFCNT(sv);
2213622d 4270 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 4271 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
4272 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 4273 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 4274 if (SvMAGICAL(nsv))
4275 mg_free(nsv);
4276 else
4277 sv_upgrade(nsv, SVt_PVMG);
93a17b20 4278 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 4279 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 4280 SvMAGICAL_off(sv);
4281 SvMAGIC(sv) = 0;
4282 }
79072805
LW		 4283 SvREFCNT(sv) = 0;
4284 sv_clear(sv);
477f5d66 4285 assert(!SvREFCNT(sv));
79072805
LW		 4286 StructCopy(nsv,sv,SV);
4287 SvREFCNT(sv) = refcnt;
1edc1566 4288 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 4289 del_SV(nsv);
79072805
LW		 4290}
4291
c461cf8f
JH		 4292/*
4293=for apidoc sv_clear
4294
4295Clear an SV, making it empty. Does not free the memory used by the SV
4296itself.
4297
4298=cut
4299*/
4300
79072805 4301void
864dbfa3 4302Perl_sv_clear(pTHX_ register SV *sv)
79072805 4303{
ec12f114 4304 HV* stash;
79072805
LW		 4305 assert(sv);
4306 assert(SvREFCNT(sv) == 0);
4307
ed6116ce 4308 if (SvOBJECT(sv)) {
3280af22 4309 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 4310 djSP;
32251b26 4311 CV* destructor;
837485b6 4312 SV tmpref;
a0d0e21e 4313
837485b6
GS		 4314 Zero(&tmpref, 1, SV);
4315 sv_upgrade(&tmpref, SVt_RV);
4316 SvROK_on(&tmpref);
4317 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
4318 SvREFCNT(&tmpref) = 1;
8ebc5c01 4319
d460ef45 4320 do {
4e8e7886 4321 stash = SvSTASH(sv);
32251b26 4322 destructor = StashHANDLER(stash,DESTROY);
4e8e7886
GS		 4323 if (destructor) {
4324 ENTER;
e788e7d3 4325 PUSHSTACKi(PERLSI_DESTROY);
837485b6 4326 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 4327 EXTEND(SP, 2);
4328 PUSHMARK(SP);
837485b6 4329 PUSHs(&tmpref);
4e8e7886 4330 PUTBACK;
32251b26 4331 call_sv((SV*)destructor, G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 4332 SvREFCNT(sv)--;
d3acc0f7 4333 POPSTACK;
3095d977 4334 SPAGAIN;
4e8e7886
GS		 4335 LEAVE;
4336 }
4337 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 4338
837485b6 4339 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 4340
4341 if (SvREFCNT(sv)) {
4342 if (PL_in_clean_objs)
cea2e8a9 4343 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 4344 HvNAME(stash));
4345 /* DESTROY gave object new lease on life */
4346 return;
4347 }
a0d0e21e 4348 }
4e8e7886 4349
a0d0e21e 4350 if (SvOBJECT(sv)) {
4e8e7886 4351 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 4352 SvOBJECT_off(sv); /* Curse the object. */
4353 if (SvTYPE(sv) != SVt_PVIO)
3280af22 4354 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 4355 }
463ee0b2 4356 }
c07a80fd 4357 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 4358 mg_free(sv);
ec12f114 4359 stash = NULL;
79072805 4360 switch (SvTYPE(sv)) {
8990e307 4361 case SVt_PVIO:
df0bd2f4
GS		 4362 if (IoIFP(sv) &&
4363 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 4364 IoIFP(sv) != PerlIO_stdout() &&
4365 IoIFP(sv) != PerlIO_stderr())
93578b34 4366 {
f2b5be74 4367 io_close((IO*)sv, FALSE);
93578b34 4368 }
1d7c1841 4369 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 4370 PerlDir_close(IoDIRP(sv));
1d7c1841 4371 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 4372 Safefree(IoTOP_NAME(sv));
4373 Safefree(IoFMT_NAME(sv));
4374 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 4375 /* FALL THROUGH */
79072805 4376 case SVt_PVBM:
a0d0e21e 4377 goto freescalar;
79072805 4378 case SVt_PVCV:
748a9306 4379 case SVt_PVFM:
85e6fe83 4380 cv_undef((CV*)sv);
a0d0e21e 4381 goto freescalar;
79072805 4382 case SVt_PVHV:
85e6fe83 4383 hv_undef((HV*)sv);
a0d0e21e 4384 break;
79072805 4385 case SVt_PVAV:
85e6fe83 4386 av_undef((AV*)sv);
a0d0e21e 4387 break;
02270b4e
GS		 4388 case SVt_PVLV:
4389 SvREFCNT_dec(LvTARG(sv));
4390 goto freescalar;
a0d0e21e 4391 case SVt_PVGV:
1edc1566 4392 gp_free((GV*)sv);
a0d0e21e 4393 Safefree(GvNAME(sv));
ec12f114
JPC		 4394 /* cannot decrease stash refcount yet, as we might recursively delete
4395 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
4396 of stash until current sv is completely gone.
4397 -- JohnPC, 27 Mar 1998 */
4398 stash = GvSTASH(sv);
a0d0e21e 4399 /* FALL THROUGH */
79072805 4400 case SVt_PVMG:
79072805
LW		 4401 case SVt_PVNV:
4402 case SVt_PVIV:
a0d0e21e
LW		 4403 freescalar:
4404 (void)SvOOK_off(sv);
79072805
LW		 4405 /* FALL THROUGH */
4406 case SVt_PV:
a0d0e21e 4407 case SVt_RV:
810b8aa5
GS		 4408 if (SvROK(sv)) {
4409 if (SvWEAKREF(sv))
4410 sv_del_backref(sv);
4411 else
4412 SvREFCNT_dec(SvRV(sv));
4413 }
1edc1566 4414 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 4415 Safefree(SvPVX(sv));
1c846c1f 4416 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
c3654f1a 4417 unsharepvn(SvPVX(sv),SvUTF8(sv)?-SvCUR(sv):SvCUR(sv),SvUVX(sv));
1c846c1f
NIS		 4418 SvFAKE_off(sv);
4419 }
79072805 4420 break;
a0d0e21e 4421/*
79072805 4422 case SVt_NV:
79072805 4423 case SVt_IV:
79072805
LW		 4424 case SVt_NULL:
4425 break;
a0d0e21e 4426*/
79072805
LW		 4427 }
4428
4429 switch (SvTYPE(sv)) {
4430 case SVt_NULL:
4431 break;
79072805
LW		 4432 case SVt_IV:
4433 del_XIV(SvANY(sv));
4434 break;
4435 case SVt_NV:
4436 del_XNV(SvANY(sv));
4437 break;
ed6116ce
LW		 4438 case SVt_RV:
4439 del_XRV(SvANY(sv));
4440 break;
79072805
LW		 4441 case SVt_PV:
4442 del_XPV(SvANY(sv));
4443 break;
4444 case SVt_PVIV:
4445 del_XPVIV(SvANY(sv));
4446 break;
4447 case SVt_PVNV:
4448 del_XPVNV(SvANY(sv));
4449 break;
4450 case SVt_PVMG:
4451 del_XPVMG(SvANY(sv));
4452 break;
4453 case SVt_PVLV:
4454 del_XPVLV(SvANY(sv));
4455 break;
4456 case SVt_PVAV:
4457 del_XPVAV(SvANY(sv));
4458 break;
4459 case SVt_PVHV:
4460 del_XPVHV(SvANY(sv));
4461 break;
4462 case SVt_PVCV:
4463 del_XPVCV(SvANY(sv));
4464 break;
4465 case SVt_PVGV:
4466 del_XPVGV(SvANY(sv));
ec12f114
JPC		 4467 /* code duplication for increased performance. */
4468 SvFLAGS(sv) &= SVf_BREAK;
4469 SvFLAGS(sv) |= SVTYPEMASK;
4470 /* decrease refcount of the stash that owns this GV, if any */
4471 if (stash)
4472 SvREFCNT_dec(stash);
4473 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 4474 case SVt_PVBM:
4475 del_XPVBM(SvANY(sv));
4476 break;
4477 case SVt_PVFM:
4478 del_XPVFM(SvANY(sv));
4479 break;
8990e307
LW		 4480 case SVt_PVIO:
4481 del_XPVIO(SvANY(sv));
4482 break;
79072805 4483 }
a0d0e21e 4484 SvFLAGS(sv) &= SVf_BREAK;
8990e307 4485 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 4486}
4487
4488SV *
864dbfa3 4489Perl_sv_newref(pTHX_ SV *sv)
79072805 4490{
463ee0b2 4491 if (sv)
dce16143 4492 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 4493 return sv;
4494}
4495
c461cf8f
JH		 4496/*
4497=for apidoc sv_free
4498
4499Free the memory used by an SV.
4500
4501=cut
4502*/
4503
79072805 4504void
864dbfa3 4505Perl_sv_free(pTHX_ SV *sv)
79072805 4506{
dce16143
MB		 4507 int refcount_is_zero;
4508
79072805
LW		 4509 if (!sv)
4510 return;
a0d0e21e
LW		 4511 if (SvREFCNT(sv) == 0) {
4512 if (SvFLAGS(sv) & SVf_BREAK)
4513 return;
3280af22 4514 if (PL_in_clean_all) /* All is fair */
1edc1566 4515 return;
d689ffdd
JP		 4516 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4517 /* make sure SvREFCNT(sv)==0 happens very seldom */
4518 SvREFCNT(sv) = (~(U32)0)/2;
4519 return;
4520 }
0453d815
PM		 4521 if (ckWARN_d(WARN_INTERNAL))
4522 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 4523 return;
4524 }
dce16143
MB		 4525 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
4526 if (!refcount_is_zero)
8990e307 4527 return;
463ee0b2
LW		 4528#ifdef DEBUGGING
4529 if (SvTEMP(sv)) {
0453d815 4530 if (ckWARN_d(WARN_DEBUGGING))
f248d071 4531 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 4532 "Attempt to free temp prematurely: SV 0x%"UVxf,
4533 PTR2UV(sv));
79072805 4534 return;
79072805 4535 }
463ee0b2 4536#endif
d689ffdd
JP		 4537 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
4538 /* make sure SvREFCNT(sv)==0 happens very seldom */
4539 SvREFCNT(sv) = (~(U32)0)/2;
4540 return;
4541 }
79072805 4542 sv_clear(sv);
477f5d66
CS		 4543 if (! SvREFCNT(sv))
4544 del_SV(sv);
79072805
LW		 4545}
4546
954c1994
GS		 4547/*
4548=for apidoc sv_len
4549
4550Returns the length of the string in the SV. See also C<SvCUR>.
4551
4552=cut
4553*/
4554
79072805 4555STRLEN
864dbfa3 4556Perl_sv_len(pTHX_ register SV *sv)
79072805 4557{
748a9306 4558 char *junk;
463ee0b2 4559 STRLEN len;
79072805
LW		 4560
4561 if (!sv)
4562 return 0;
4563
8990e307 4564 if (SvGMAGICAL(sv))
565764a8 4565 len = mg_length(sv);
8990e307 4566 else
748a9306 4567 junk = SvPV(sv, len);
463ee0b2 4568 return len;
79072805
LW		 4569}
4570
c461cf8f
JH		 4571/*
4572=for apidoc sv_len_utf8
4573
4574Returns the number of characters in the string in an SV, counting wide
4575UTF8 bytes as a single character.
4576
4577=cut
4578*/
4579
a0ed51b3 4580STRLEN
864dbfa3 4581Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 4582{
a0ed51b3
LW		 4583 if (!sv)
4584 return 0;
4585
a0ed51b3 4586 if (SvGMAGICAL(sv))
b76347f2 4587 return mg_length(sv);
a0ed51b3 4588 else
b76347f2
JH		 4589 {
4590 STRLEN len;
4591 U8 *s = (U8*)SvPV(sv, len);
4592
d6efbbad 4593 return Perl_utf8_length(aTHX_ s, s + len);
a0ed51b3 4594 }
a0ed51b3
LW		 4595}
4596
4597void
864dbfa3 4598Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4599{
dfe13c55
GS		 4600 U8 *start;
4601 U8 *s;
4602 U8 *send;
a0ed51b3
LW		 4603 I32 uoffset = *offsetp;
4604 STRLEN len;
4605
4606 if (!sv)
4607 return;
4608
dfe13c55 4609 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4610 send = s + len;
4611 while (s < send && uoffset--)
4612 s += UTF8SKIP(s);
bb40f870
GA		 4613 if (s >= send)
4614 s = send;
a0ed51b3
LW		 4615 *offsetp = s - start;
4616 if (lenp) {
4617 I32 ulen = *lenp;
4618 start = s;
4619 while (s < send && ulen--)
4620 s += UTF8SKIP(s);
bb40f870
GA		 4621 if (s >= send)
4622 s = send;
a0ed51b3
LW		 4623 *lenp = s - start;
4624 }
4625 return;
4626}
4627
4628void
864dbfa3 4629Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4630{
dfe13c55
GS		 4631 U8 *s;
4632 U8 *send;
a0ed51b3
LW		 4633 STRLEN len;
4634
4635 if (!sv)
4636 return;
4637
dfe13c55 4638 s = (U8*)SvPV(sv, len);
a0ed51b3 4639 if (len < *offsetp)
a0dbb045 4640 Perl_croak(aTHX_ "panic: sv_pos_b2u: bad byte offset");
a0ed51b3
LW		 4641 send = s + *offsetp;
4642 len = 0;
4643 while (s < send) {
a0dbb045
JH		 4644 STRLEN n;
4645
4646 if (utf8_to_uv(s, UTF8SKIP(s), &n, 0)) {
4647 s += n;
4648 len++;
4649 }
4650 else
4651 break;
a0ed51b3
LW		 4652 }
4653 *offsetp = len;
4654 return;
4655}
4656
954c1994
GS		 4657/*
4658=for apidoc sv_eq
4659
4660Returns a boolean indicating whether the strings in the two SVs are
4661identical.
4662
4663=cut
4664*/
4665
79072805 4666I32
e01b9e88 4667Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
79072805
LW		 4668{
4669 char *pv1;
463ee0b2 4670 STRLEN cur1;
79072805 4671 char *pv2;
463ee0b2 4672 STRLEN cur2;
e01b9e88
SC		 4673 I32 eq = 0;
4674 bool pv1tmp = FALSE;
4675 bool pv2tmp = FALSE;
79072805 4676
e01b9e88 4677 if (!sv1) {
79072805
LW		 4678 pv1 = "";
4679 cur1 = 0;
4680 }
463ee0b2 4681 else
e01b9e88 4682 pv1 = SvPV(sv1, cur1);
79072805 4683
e01b9e88
SC		 4684 if (!sv2){
4685 pv2 = "";
4686 cur2 = 0;
92d29cee 4687 }
e01b9e88
SC		 4688 else
4689 pv2 = SvPV(sv2, cur2);
79072805 4690
e01b9e88 4691 /* do not utf8ize the comparands as a side-effect */
7bbb0251 4692 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
1aa99e6b
IH		 4693 if (PL_hints & HINT_UTF8_DISTINCT)
4694 return FALSE;
4695
e01b9e88 4696 if (SvUTF8(sv1)) {
1aa99e6b 4697 (void)utf8_to_bytes((U8*)(pv1 = savepvn(pv1, cur1)), &cur1);
a9df0fa1
CB		 4698 {
4699 IV scur1 = cur1;
4700 if (scur1 < 0) {
4701 Safefree(pv1);
4702 return 0;
4703 }
1aa99e6b
IH		 4704 }
4705 pv1tmp = TRUE;
e01b9e88
SC		 4706 }
4707 else {
1aa99e6b 4708 (void)utf8_to_bytes((U8*)(pv2 = savepvn(pv2, cur2)), &cur2);
a9df0fa1
CB		 4709 {
4710 IV scur2 = cur2;
4711 if (scur2 < 0) {
4712 Safefree(pv2);
4713 return 0;
4714 }
1aa99e6b
IH		 4715 }
4716 pv2tmp = TRUE;
e01b9e88
SC		 4717 }
4718 }
79072805 4719
e01b9e88
SC		 4720 if (cur1 == cur2)
4721 eq = memEQ(pv1, pv2, cur1);
4722
4723 if (pv1tmp)
4724 Safefree(pv1);
4725 if (pv2tmp)
4726 Safefree(pv2);
4727
4728 return eq;
79072805
LW		 4729}
4730
954c1994
GS		 4731/*
4732=for apidoc sv_cmp
4733
4734Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4735string in C<sv1> is less than, equal to, or greater than the string in
4736C<sv2>.
4737
4738=cut
4739*/
4740
79072805 4741I32
e01b9e88 4742Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
79072805 4743{
560a288e
GS		 4744 STRLEN cur1, cur2;
4745 char *pv1, *pv2;
1c846c1f 4746 I32 cmp;
e01b9e88
SC		 4747 bool pv1tmp = FALSE;
4748 bool pv2tmp = FALSE;
560a288e 4749
e01b9e88
SC		 4750 if (!sv1) {
4751 pv1 = "";
560a288e
GS		 4752 cur1 = 0;
4753 }
e01b9e88
SC		 4754 else
4755 pv1 = SvPV(sv1, cur1);
560a288e 4756
e01b9e88
SC		 4757 if (!sv2){
4758 pv2 = "";
560a288e
GS		 4759 cur2 = 0;
4760 }
e01b9e88
SC		 4761 else
4762 pv2 = SvPV(sv2, cur2);
79072805 4763
e01b9e88
SC		 4764 /* do not utf8ize the comparands as a side-effect */
4765 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
1aa99e6b
IH		 4766 if (PL_hints & HINT_UTF8_DISTINCT)
4767 return SvUTF8(sv1) ? 1 : -1;
4768
e01b9e88
SC		 4769 if (SvUTF8(sv1)) {
4770 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4771 pv2tmp = TRUE;
4772 }
4773 else {
4774 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4775 pv1tmp = TRUE;
4776 }
4777 }
79072805 4778
e01b9e88
SC		 4779 if (!cur1) {
4780 cmp = cur2 ? -1 : 0;
4781 } else if (!cur2) {
4782 cmp = 1;
4783 } else {
4784 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4785
4786 if (retval) {
4787 cmp = retval < 0 ? -1 : 1;
4788 } else if (cur1 == cur2) {
4789 cmp = 0;
4790 } else {
4791 cmp = cur1 < cur2 ? -1 : 1;
4792 }
4793 }
16660edb 4794
e01b9e88
SC		 4795 if (pv1tmp)
4796 Safefree(pv1);
4797 if (pv2tmp)
4798 Safefree(pv2);
16660edb 4799
e01b9e88 4800 return cmp;
bbce6d69 4801}
16660edb 4802
c461cf8f
JH		 4803/*
4804=for apidoc sv_cmp_locale
4805
4806Compares the strings in two SVs in a locale-aware manner. See
4807L</sv_cmp_locale>
4808
4809=cut
4810*/
4811
bbce6d69 4812I32
864dbfa3 4813Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4814{
36477c24 4815#ifdef USE_LOCALE_COLLATE
16660edb 4816
bbce6d69 4817 char *pv1, *pv2;
4818 STRLEN len1, len2;
4819 I32 retval;
16660edb 4820
3280af22 4821 if (PL_collation_standard)
bbce6d69 4822 goto raw_compare;
16660edb 4823
bbce6d69 4824 len1 = 0;
8ac85365 4825 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4826 len2 = 0;
8ac85365 4827 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4828
bbce6d69 4829 if (!pv1 || !len1) {
4830 if (pv2 && len2)
4831 return -1;
4832 else
4833 goto raw_compare;
4834 }
4835 else {
4836 if (!pv2 || !len2)
4837 return 1;
4838 }
16660edb 4839
bbce6d69 4840 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4841
bbce6d69 4842 if (retval)
16660edb 4843 return retval < 0 ? -1 : 1;
4844
bbce6d69 4845 /*
4846 * When the result of collation is equality, that doesn't mean
4847 * that there are no differences -- some locales exclude some
4848 * characters from consideration. So to avoid false equalities,
4849 * we use the raw string as a tiebreaker.
4850 */
16660edb 4851
bbce6d69 4852 raw_compare:
4853 /* FALL THROUGH */
16660edb 4854
36477c24 4855#endif /* USE_LOCALE_COLLATE */
16660edb 4856
bbce6d69 4857 return sv_cmp(sv1, sv2);
4858}
79072805 4859
36477c24 4860#ifdef USE_LOCALE_COLLATE
7a4c00b4 4861/*
4862 * Any scalar variable may carry an 'o' magic that contains the
4863 * scalar data of the variable transformed to such a format that
4864 * a normal memory comparison can be used to compare the data
4865 * according to the locale settings.
4866 */
bbce6d69 4867char *
864dbfa3 4868Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4869{
7a4c00b4 4870 MAGIC *mg;
16660edb 4871
8ac85365 4872 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4873 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4874 char *s, *xf;
4875 STRLEN len, xlen;
4876
7a4c00b4 4877 if (mg)
4878 Safefree(mg->mg_ptr);
bbce6d69 4879 s = SvPV(sv, len);
4880 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4881 if (SvREADONLY(sv)) {
4882 SAVEFREEPV(xf);
4883 *nxp = xlen;
3280af22 4884 return xf + sizeof(PL_collation_ix);
ff0cee69 4885 }
7a4c00b4 4886 if (! mg) {
4887 sv_magic(sv, 0, 'o', 0, 0);
4888 mg = mg_find(sv, 'o');
4889 assert(mg);
bbce6d69 4890 }
7a4c00b4 4891 mg->mg_ptr = xf;
565764a8 4892 mg->mg_len = xlen;
7a4c00b4 4893 }
4894 else {
ff0cee69 4895 if (mg) {
4896 mg->mg_ptr = NULL;
565764a8 4897 mg->mg_len = -1;
ff0cee69 4898 }
bbce6d69 4899 }
4900 }
7a4c00b4 4901 if (mg && mg->mg_ptr) {
565764a8 4902 *nxp = mg->mg_len;
3280af22 4903 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4904 }
4905 else {
4906 *nxp = 0;
4907 return NULL;
16660edb 4908 }
79072805
LW		 4909}
4910
36477c24 4911#endif /* USE_LOCALE_COLLATE */
bbce6d69 4912
c461cf8f
JH		 4913/*
4914=for apidoc sv_gets
4915
4916Get a line from the filehandle and store it into the SV, optionally
4917appending to the currently-stored string.
4918
4919=cut
4920*/
4921
79072805 4922char *
864dbfa3 4923Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4924{
c07a80fd 4925 char *rsptr;
4926 STRLEN rslen;
4927 register STDCHAR rslast;
4928 register STDCHAR *bp;
4929 register I32 cnt;
4930 I32 i;
4931
2213622d 4932 SV_CHECK_THINKFIRST(sv);
6fc92669 4933 (void)SvUPGRADE(sv, SVt_PV);
99491443 4934
ff68c719 4935 SvSCREAM_off(sv);
c07a80fd 4936
3280af22 4937 if (RsSNARF(PL_rs)) {
c07a80fd 4938 rsptr = NULL;
4939 rslen = 0;
4940 }
3280af22 4941 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4942 I32 recsize, bytesread;
4943 char *buffer;
4944
4945 /* Grab the size of the record we're getting */
3280af22 4946 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4947 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4948 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4949 /* Go yank in */
4950#ifdef VMS
4951 /* VMS wants read instead of fread, because fread doesn't respect */
4952 /* RMS record boundaries. This is not necessarily a good thing to be */
4953 /* doing, but we've got no other real choice */
4954 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4955#else
4956 bytesread = PerlIO_read(fp, buffer, recsize);
4957#endif
4958 SvCUR_set(sv, bytesread);
e670df4e 4959 buffer[bytesread] = '\0';
7d59b7e4
NIS		 4960 if (PerlIO_isutf8(fp))
4961 SvUTF8_on(sv);
4962 else
4963 SvUTF8_off(sv);
5b2b9c68
HM		 4964 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4965 }
3280af22 4966 else if (RsPARA(PL_rs)) {
c07a80fd 4967 rsptr = "\n\n";
4968 rslen = 2;
4969 }
7d59b7e4
NIS		 4970 else {
4971 /* Get $/ i.e. PL_rs into same encoding as stream wants */
4972 if (PerlIO_isutf8(fp)) {
4973 rsptr = SvPVutf8(PL_rs, rslen);
4974 }
4975 else {
4976 if (SvUTF8(PL_rs)) {
4977 if (!sv_utf8_downgrade(PL_rs, TRUE)) {
4978 Perl_croak(aTHX_ "Wide character in $/");
4979 }
4980 }
4981 rsptr = SvPV(PL_rs, rslen);
4982 }
4983 }
4984
c07a80fd 4985 rslast = rslen ? rsptr[rslen - 1] : '\0';
4986
3280af22 4987 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4988 do { /* to make sure file boundaries work right */
760ac839 4989 if (PerlIO_eof(fp))
a0d0e21e 4990 return 0;
760ac839 4991 i = PerlIO_getc(fp);
79072805 4992 if (i != '\n') {
a0d0e21e
LW		 4993 if (i == -1)
4994 return 0;
760ac839 4995 PerlIO_ungetc(fp,i);
79072805
LW		 4996 break;
4997 }
4998 } while (i != EOF);
4999 }
c07a80fd 5000
760ac839
LW		 5001 /* See if we know enough about I/O mechanism to cheat it ! */
5002
5003 /* This used to be #ifdef test - it is made run-time test for ease
1c846c1f 5004 of abstracting out stdio interface. One call should be cheap
760ac839
LW		 5005 enough here - and may even be a macro allowing compile
5006 time optimization.
5007 */
5008
5009 if (PerlIO_fast_gets(fp)) {
5010
5011 /*
5012 * We're going to steal some values from the stdio struct
5013 * and put EVERYTHING in the innermost loop into registers.
5014 */
5015 register STDCHAR *ptr;
5016 STRLEN bpx;
5017 I32 shortbuffered;
5018
16660edb 5019#if defined(VMS) && defined(PERLIO_IS_STDIO)
5020 /* An ungetc()d char is handled separately from the regular
5021 * buffer, so we getc() it back out and stuff it in the buffer.
5022 */
5023 i = PerlIO_getc(fp);
5024 if (i == EOF) return 0;
5025 *(--((*fp)->_ptr)) = (unsigned char) i;
5026 (*fp)->_cnt++;
5027#endif
c07a80fd 5028
c2960299 5029 /* Here is some breathtakingly efficient cheating */
c07a80fd 5030
a20bf0c3 5031 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 5032 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 5033 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
5034 if (cnt > 80 && SvLEN(sv) > append) {
5035 shortbuffered = cnt - SvLEN(sv) + append + 1;
5036 cnt -= shortbuffered;
5037 }
5038 else {
5039 shortbuffered = 0;
bbce6d69 5040 /* remember that cnt can be negative */
5041 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 5042 }
5043 }
5044 else
5045 shortbuffered = 0;
c07a80fd 5046 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 5047 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 5048 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5049 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 5050 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5051 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 5052 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 5053 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 5054 for (;;) {
5055 screamer:
93a17b20 5056 if (cnt > 0) {
c07a80fd 5057 if (rslen) {
760ac839
LW		 5058 while (cnt > 0) { /* this | eat */
5059 cnt--;
c07a80fd 5060 if ((*bp++ = *ptr++) == rslast) /* really | dust */
5061 goto thats_all_folks; /* screams | sed :-) */
5062 }
5063 }
5064 else {
1c846c1f
NIS		 5065 Copy(ptr, bp, cnt, char); /* this | eat */
5066 bp += cnt; /* screams | dust */
c07a80fd 5067 ptr += cnt; /* louder | sed :-) */
a5f75d66 5068 cnt = 0;
93a17b20 5069 }
79072805
LW		 5070 }
5071
748a9306 5072 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 5073 cnt = shortbuffered;
5074 shortbuffered = 0;
c07a80fd 5075 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 5076 SvCUR_set(sv, bpx);
5077 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 5078 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 5079 continue;
5080 }
5081
16660edb 5082 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 5083 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
5084 PTR2UV(ptr),(long)cnt));
a20bf0c3 5085 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 5086 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5087 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 5088 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 5089 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
1c846c1f 5090 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 5091 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
5092 another abstraction. */
760ac839 5093 i = PerlIO_getc(fp); /* get more characters */
16660edb 5094 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5095 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 5096 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 5097 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 5098 cnt = PerlIO_get_cnt(fp);
5099 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 5100 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5101 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 5102
748a9306
LW		 5103 if (i == EOF) /* all done for ever? */
5104 goto thats_really_all_folks;
5105
c07a80fd 5106 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 5107 SvCUR_set(sv, bpx);
5108 SvGROW(sv, bpx + cnt + 2);
c07a80fd 5109 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
5110
760ac839 5111 *bp++ = i; /* store character from PerlIO_getc */
79072805 5112
c07a80fd 5113 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 5114 goto thats_all_folks;
79072805
LW		 5115 }
5116
5117thats_all_folks:
c07a80fd 5118 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 5119 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 5120 goto screamer; /* go back to the fray */
79072805
LW		 5121thats_really_all_folks:
5122 if (shortbuffered)
5123 cnt += shortbuffered;
16660edb 5124 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5125 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 5126 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 5127 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 5128 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 5129 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 5130 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 5131 *bp = '\0';
760ac839 5132 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 5133 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 5134 "Screamer: done, len=%ld, string=|%.*s|\n",
5135 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 5136 }
5137 else
79072805 5138 {
4d2c4e07 5139#ifndef EPOC
760ac839 5140 /*The big, slow, and stupid way */
c07a80fd 5141 STDCHAR buf[8192];
4d2c4e07
OF		 5142#else
5143 /* Need to work around EPOC SDK features */
5144 /* On WINS: MS VC5 generates calls to _chkstk, */
5145 /* if a `large' stack frame is allocated */
5146 /* gcc on MARM does not generate calls like these */
5147 STDCHAR buf[1024];
5148#endif
79072805 5149
760ac839 5150screamer2:
c07a80fd 5151 if (rslen) {
760ac839
LW		 5152 register STDCHAR *bpe = buf + sizeof(buf);
5153 bp = buf;
5154 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
5155 ; /* keep reading */
5156 cnt = bp - buf;
c07a80fd 5157 }
5158 else {
760ac839 5159 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 5160 /* Accomodate broken VAXC compiler, which applies U8 cast to
5161 * both args of ?: operator, causing EOF to change into 255
5162 */
5163 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 5164 }
79072805
LW		 5165
5166 if (append)
760ac839 5167 sv_catpvn(sv, (char *) buf, cnt);
79072805 5168 else
760ac839 5169 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 5170
5171 if (i != EOF && /* joy */
5172 (!rslen ||
5173 SvCUR(sv) < rslen ||
36477c24 5174 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 5175 {
5176 append = -1;
63e4d877
CS		 5177 /*
5178 * If we're reading from a TTY and we get a short read,
5179 * indicating that the user hit his EOF character, we need
5180 * to notice it now, because if we try to read from the TTY
5181 * again, the EOF condition will disappear.
5182 *
5183 * The comparison of cnt to sizeof(buf) is an optimization
5184 * that prevents unnecessary calls to feof().
5185 *
5186 * - jik 9/25/96
5187 */
5188 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
5189 goto screamer2;
79072805
LW		 5190 }
5191 }
5192
1c846c1f 5193 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 5194 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 5195 i = PerlIO_getc(fp);
79072805 5196 if (i != '\n') {
760ac839 5197 PerlIO_ungetc(fp,i);
79072805
LW		 5198 break;
5199 }
5200 }
5201 }
c07a80fd 5202
7d59b7e4
NIS		 5203 if (PerlIO_isutf8(fp))
5204 SvUTF8_on(sv);
5205 else
5206 SvUTF8_off(sv);
5207
c07a80fd 5208 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 5209}
5210
760ac839 5211
954c1994
GS		 5212/*
5213=for apidoc sv_inc
5214
5215Auto-increment of the value in the SV.
5216
5217=cut
5218*/
5219
79072805 5220void
864dbfa3 5221Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 5222{
5223 register char *d;
463ee0b2 5224 int flags;
79072805
LW		 5225
5226 if (!sv)
5227 return;
b23a5f78
GB		 5228 if (SvGMAGICAL(sv))
5229 mg_get(sv);
ed6116ce 5230 if (SvTHINKFIRST(sv)) {
0f15f207 5231 if (SvREADONLY(sv)) {
3280af22 5232 if (PL_curcop != &PL_compiling)
cea2e8a9 5233 Perl_croak(aTHX_ PL_no_modify);
0f15f207 5234 }
a0d0e21e 5235 if (SvROK(sv)) {
b5be31e9 5236 IV i;
9e7bc3e8
JD		 5237 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
5238 return;
56431972 5239 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 5240 sv_unref(sv);
5241 sv_setiv(sv, i);
a0d0e21e 5242 }
ed6116ce 5243 }
8990e307 5244 flags = SvFLAGS(sv);
28e5dec8
JH		 5245 if ((flags & (SVp_NOK|SVp_IOK)) == SVp_NOK) {
5246 /* It's (privately or publicly) a float, but not tested as an
5247 integer, so test it to see. */
d460ef45 5248 (void) SvIV(sv);
28e5dec8
JH		 5249 flags = SvFLAGS(sv);
5250 }
5251 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5252 /* It's publicly an integer, or privately an integer-not-float */
5253 oops_its_int:
25da4f38
IZ		 5254 if (SvIsUV(sv)) {
5255 if (SvUVX(sv) == UV_MAX)
65202027 5256 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 5257 else
5258 (void)SvIOK_only_UV(sv);
5259 ++SvUVX(sv);
5260 } else {
5261 if (SvIVX(sv) == IV_MAX)
28e5dec8 5262 sv_setuv(sv, (UV)IV_MAX + 1);
25da4f38
IZ		 5263 else {
5264 (void)SvIOK_only(sv);
5265 ++SvIVX(sv);
1c846c1f 5266 }
55497cff 5267 }
79072805
LW		 5268 return;
5269 }
28e5dec8
JH		 5270 if (flags & SVp_NOK) {
5271 (void)SvNOK_only(sv);
5272 SvNVX(sv) += 1.0;
5273 return;
5274 }
5275
8990e307 5276 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
28e5dec8
JH		 5277 if ((flags & SVTYPEMASK) < SVt_PVIV)
5278 sv_upgrade(sv, SVt_IV);
5279 (void)SvIOK_only(sv);
5280 SvIVX(sv) = 1;
79072805
LW		 5281 return;
5282 }
463ee0b2 5283 d = SvPVX(sv);
79072805
LW		 5284 while (isALPHA(*d)) d++;
5285 while (isDIGIT(*d)) d++;
5286 if (*d) {
28e5dec8
JH		 5287#ifdef PERL_PRESERVE_IVUV
5288 /* Got to punt this an an integer if needs be, but we don't issue
5289 warnings. Probably ought to make the sv_iv_please() that does
5290 the conversion if possible, and silently. */
5291 I32 numtype = looks_like_number(sv);
5292 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5293 /* Need to try really hard to see if it's an integer.
5294 9.22337203685478e+18 is an integer.
5295 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5296 so $a="9.22337203685478e+18"; $a+0; $a++
5297 needs to be the same as $a="9.22337203685478e+18"; $a++
5298 or we go insane. */
d460ef45 5299
28e5dec8
JH		 5300 (void) sv_2iv(sv);
5301 if (SvIOK(sv))
5302 goto oops_its_int;
5303
5304 /* sv_2iv *should* have made this an NV */
5305 if (flags & SVp_NOK) {
5306 (void)SvNOK_only(sv);
5307 SvNVX(sv) += 1.0;
5308 return;
5309 }
5310 /* I don't think we can get here. Maybe I should assert this
5311 And if we do get here I suspect that sv_setnv will croak. NWC
5312 Fall through. */
5313#if defined(USE_LONG_DOUBLE)
5314 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n",
5315 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5316#else
5317 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_inc punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5318 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5319#endif
5320 }
5321#endif /* PERL_PRESERVE_IVUV */
5322 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0);
79072805
LW		 5323 return;
5324 }
5325 d--;
463ee0b2 5326 while (d >= SvPVX(sv)) {
79072805
LW		 5327 if (isDIGIT(*d)) {
5328 if (++*d <= '9')
5329 return;
5330 *(d--) = '0';
5331 }
5332 else {
9d116dd7
JH		 5333#ifdef EBCDIC
5334 /* MKS: The original code here died if letters weren't consecutive.
5335 * at least it didn't have to worry about non-C locales. The
5336 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
1c846c1f 5337 * arranged in order (although not consecutively) and that only
9d116dd7
JH		 5338 * [A-Za-z] are accepted by isALPHA in the C locale.
5339 */
5340 if (*d != 'z' && *d != 'Z') {
5341 do { ++*d; } while (!isALPHA(*d));
5342 return;
5343 }
5344 *(d--) -= 'z' - 'a';
5345#else
79072805
LW		 5346 ++*d;
5347 if (isALPHA(*d))
5348 return;
5349 *(d--) -= 'z' - 'a' + 1;
9d116dd7 5350#endif
79072805
LW		 5351 }
5352 }
5353 /* oh,oh, the number grew */
5354 SvGROW(sv, SvCUR(sv) + 2);
5355 SvCUR(sv)++;
463ee0b2 5356 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 5357 *d = d[-1];
5358 if (isDIGIT(d[1]))
5359 *d = '1';
5360 else
5361 *d = d[1];
5362}
5363
954c1994
GS		 5364/*
5365=for apidoc sv_dec
5366
5367Auto-decrement of the value in the SV.
5368
5369=cut
5370*/
5371
79072805 5372void
864dbfa3 5373Perl_sv_dec(pTHX_ register SV *sv)
79072805 5374{
463ee0b2
LW		 5375 int flags;
5376
79072805
LW		 5377 if (!sv)
5378 return;
b23a5f78
GB		 5379 if (SvGMAGICAL(sv))
5380 mg_get(sv);
ed6116ce 5381 if (SvTHINKFIRST(sv)) {
0f15f207 5382 if (SvREADONLY(sv)) {
3280af22 5383 if (PL_curcop != &PL_compiling)
cea2e8a9 5384 Perl_croak(aTHX_ PL_no_modify);
0f15f207 5385 }
a0d0e21e 5386 if (SvROK(sv)) {
b5be31e9 5387 IV i;
9e7bc3e8
JD		 5388 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
5389 return;
56431972 5390 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 5391 sv_unref(sv);
5392 sv_setiv(sv, i);
a0d0e21e 5393 }
ed6116ce 5394 }
28e5dec8
JH		 5395 /* Unlike sv_inc we don't have to worry about string-never-numbers
5396 and keeping them magic. But we mustn't warn on punting */
8990e307 5397 flags = SvFLAGS(sv);
28e5dec8
JH		 5398 if ((flags & SVf_IOK) || ((flags & (SVp_IOK | SVp_NOK)) == SVp_IOK)) {
5399 /* It's publicly an integer, or privately an integer-not-float */
5400 oops_its_int:
25da4f38
IZ		 5401 if (SvIsUV(sv)) {
5402 if (SvUVX(sv) == 0) {
5403 (void)SvIOK_only(sv);
5404 SvIVX(sv) = -1;
5405 }
5406 else {
5407 (void)SvIOK_only_UV(sv);
5408 --SvUVX(sv);
1c846c1f 5409 }
25da4f38
IZ		 5410 } else {
5411 if (SvIVX(sv) == IV_MIN)
65202027 5412 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 5413 else {
5414 (void)SvIOK_only(sv);
5415 --SvIVX(sv);
1c846c1f 5416 }
55497cff 5417 }
5418 return;
5419 }
28e5dec8
JH		 5420 if (flags & SVp_NOK) {
5421 SvNVX(sv) -= 1.0;
5422 (void)SvNOK_only(sv);
5423 return;
5424 }
8990e307 5425 if (!(flags & SVp_POK)) {
4633a7c4
LW		 5426 if ((flags & SVTYPEMASK) < SVt_PVNV)
5427 sv_upgrade(sv, SVt_NV);
463ee0b2 5428 SvNVX(sv) = -1.0;
a0d0e21e 5429 (void)SvNOK_only(sv);
79072805
LW		 5430 return;
5431 }
28e5dec8
JH		 5432#ifdef PERL_PRESERVE_IVUV
5433 {
5434 I32 numtype = looks_like_number(sv);
5435 if (numtype && !(numtype & IS_NUMBER_INFINITY)) {
5436 /* Need to try really hard to see if it's an integer.
5437 9.22337203685478e+18 is an integer.
5438 but "9.22337203685478e+18" + 0 is UV=9223372036854779904
5439 so $a="9.22337203685478e+18"; $a+0; $a--
5440 needs to be the same as $a="9.22337203685478e+18"; $a--
5441 or we go insane. */
d460ef45 5442
28e5dec8
JH		 5443 (void) sv_2iv(sv);
5444 if (SvIOK(sv))
5445 goto oops_its_int;
5446
5447 /* sv_2iv *should* have made this an NV */
5448 if (flags & SVp_NOK) {
5449 (void)SvNOK_only(sv);
5450 SvNVX(sv) -= 1.0;
5451 return;
5452 }
5453 /* I don't think we can get here. Maybe I should assert this
5454 And if we do get here I suspect that sv_setnv will croak. NWC
5455 Fall through. */
5456#if defined(USE_LONG_DOUBLE)
5457 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%"PERL_PRIgldbl"\n",
5458 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5459#else
5460 DEBUG_c(PerlIO_printf(Perl_debug_log,"sv_dec punt failed to convert '%s' to IOK or NOKp, UV=0x%"UVxf" NV=%g\n",
5461 SvPVX(sv), SvIVX(sv), SvNVX(sv)));
5462#endif
5463 }
5464 }
5465#endif /* PERL_PRESERVE_IVUV */
097ee67d 5466 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 5467}
5468
954c1994
GS		 5469/*
5470=for apidoc sv_mortalcopy
5471
5472Creates a new SV which is a copy of the original SV. The new SV is marked
5473as mortal.
5474
5475=cut
5476*/
5477
79072805
LW		 5478/* Make a string that will exist for the duration of the expression
5479 * evaluation. Actually, it may have to last longer than that, but
5480 * hopefully we won't free it until it has been assigned to a
5481 * permanent location. */
5482
5483SV *
864dbfa3 5484Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 5485{
463ee0b2 5486 register SV *sv;
79072805 5487
4561caa4 5488 new_SV(sv);
79072805 5489 sv_setsv(sv,oldstr);
677b06e3
GS		 5490 EXTEND_MORTAL(1);
5491 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 5492 SvTEMP_on(sv);
5493 return sv;
5494}
5495
954c1994
GS		 5496/*
5497=for apidoc sv_newmortal
5498
5499Creates a new SV which is mortal. The reference count of the SV is set to 1.
5500
5501=cut
5502*/
5503
8990e307 5504SV *
864dbfa3 5505Perl_sv_newmortal(pTHX)
8990e307
LW		 5506{
5507 register SV *sv;
5508
4561caa4 5509 new_SV(sv);
8990e307 5510 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 5511 EXTEND_MORTAL(1);
5512 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 5513 return sv;
5514}
5515
954c1994
GS		 5516/*
5517=for apidoc sv_2mortal
5518
5519Marks an SV as mortal. The SV will be destroyed when the current context
5520ends.
5521
5522=cut
5523*/
5524
79072805
LW		 5525/* same thing without the copying */
5526
5527SV *
864dbfa3 5528Perl_sv_2mortal(pTHX_ register SV *sv)
79072805
LW		 5529{
5530 if (!sv)
5531 return sv;
d689ffdd 5532 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 5533 return sv;
677b06e3
GS		 5534 EXTEND_MORTAL(1);
5535 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 5536 SvTEMP_on(sv);
79072805
LW		 5537 return sv;
5538}
5539
954c1994
GS		 5540/*
5541=for apidoc newSVpv
5542
5543Creates a new SV and copies a string into it. The reference count for the
5544SV is set to 1. If C<len> is zero, Perl will compute the length using
5545strlen(). For efficiency, consider using C<newSVpvn> instead.
5546
5547=cut
5548*/
5549
79072805 5550SV *
864dbfa3 5551Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 5552{
463ee0b2 5553 register SV *sv;
79072805 5554
4561caa4 5555 new_SV(sv);
79072805
LW		 5556 if (!len)
5557 len = strlen(s);
5558 sv_setpvn(sv,s,len);
5559 return sv;
5560}
5561
954c1994
GS		 5562/*
5563=for apidoc newSVpvn
5564
5565Creates a new SV and copies a string into it. The reference count for the
1c846c1f 5566SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
954c1994
GS		 5567string. You are responsible for ensuring that the source string is at least
5568C<len> bytes long.
5569
5570=cut
5571*/
5572
9da1e3b5 5573SV *
864dbfa3 5574Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 5575{
5576 register SV *sv;
5577
5578 new_SV(sv);
9da1e3b5
MUN		 5579 sv_setpvn(sv,s,len);
5580 return sv;
5581}
5582
1c846c1f
NIS		 5583/*
5584=for apidoc newSVpvn_share
5585
5586Creates a new SV and populates it with a string from
5587the string table. Turns on READONLY and FAKE.
5588The idea here is that as string table is used for shared hash
5589keys these strings will have SvPVX == HeKEY and hash lookup
5590will avoid string compare.
5591
5592=cut
5593*/
5594
5595SV *
c3654f1a 5596Perl_newSVpvn_share(pTHX_ const char *src, I32 len, U32 hash)
1c846c1f
NIS		 5597{
5598 register SV *sv;
c3654f1a
IH		 5599 bool is_utf8 = FALSE;
5600 if (len < 0) {
5601 len = -len;
5602 is_utf8 = TRUE;
5603 }
1c846c1f
NIS		 5604 if (!hash)
5605 PERL_HASH(hash, src, len);
5606 new_SV(sv);
5607 sv_upgrade(sv, SVt_PVIV);
c3654f1a 5608 SvPVX(sv) = sharepvn(src, is_utf8?-len:len, hash);
1c846c1f
NIS		 5609 SvCUR(sv) = len;
5610 SvUVX(sv) = hash;
5611 SvLEN(sv) = 0;
5612 SvREADONLY_on(sv);
5613 SvFAKE_on(sv);
5614 SvPOK_on(sv);
c3654f1a
IH		 5615 if (is_utf8)
5616 SvUTF8_on(sv);
1c846c1f
NIS		 5617 return sv;
5618}
5619
cea2e8a9 5620#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 5621SV *
cea2e8a9 5622Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 5623{
cea2e8a9 5624 dTHX;
46fc3d4c 5625 register SV *sv;
5626 va_list args;
46fc3d4c 5627 va_start(args, pat);
c5be433b 5628 sv = vnewSVpvf(pat, &args);
46fc3d4c 5629 va_end(args);
5630 return sv;
5631}
cea2e8a9 5632#endif
46fc3d4c 5633
954c1994
GS		 5634/*
5635=for apidoc newSVpvf
5636
5637Creates a new SV an initialize it with the string formatted like
5638C<sprintf>.
5639
5640=cut
5641*/
5642
cea2e8a9
GS		 5643SV *
5644Perl_newSVpvf(pTHX_ const char* pat, ...)
5645{
5646 register SV *sv;
5647 va_list args;
cea2e8a9 5648 va_start(args, pat);
c5be433b 5649 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 5650 va_end(args);
5651 return sv;
5652}
46fc3d4c 5653
79072805 5654SV *
c5be433b
GS		 5655Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
5656{
5657 register SV *sv;
5658 new_SV(sv);
5659 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5660 return sv;
5661}
5662
954c1994
GS		 5663/*
5664=for apidoc newSVnv
5665
5666Creates a new SV and copies a floating point value into it.
5667The reference count for the SV is set to 1.
5668
5669=cut
5670*/
5671
c5be433b 5672SV *
65202027 5673Perl_newSVnv(pTHX_ NV n)
79072805 5674{
463ee0b2 5675 register SV *sv;
79072805 5676
4561caa4 5677 new_SV(sv);
79072805
LW		 5678 sv_setnv(sv,n);
5679 return sv;
5680}
5681
954c1994
GS		 5682/*
5683=for apidoc newSViv
5684
5685Creates a new SV and copies an integer into it. The reference count for the
5686SV is set to 1.
5687
5688=cut
5689*/
5690
79072805 5691SV *
864dbfa3 5692Perl_newSViv(pTHX_ IV i)
79072805 5693{
463ee0b2 5694 register SV *sv;
79072805 5695
4561caa4 5696 new_SV(sv);
79072805
LW		 5697 sv_setiv(sv,i);
5698 return sv;
5699}
5700
954c1994 5701/*
1a3327fb
JH		 5702=for apidoc newSVuv
5703
5704Creates a new SV and copies an unsigned integer into it.
5705The reference count for the SV is set to 1.
5706
5707=cut
5708*/
5709
5710SV *
5711Perl_newSVuv(pTHX_ UV u)
5712{
5713 register SV *sv;
5714
5715 new_SV(sv);
5716 sv_setuv(sv,u);
5717 return sv;
5718}
5719
5720/*
954c1994
GS		 5721=for apidoc newRV_noinc
5722
5723Creates an RV wrapper for an SV. The reference count for the original
5724SV is B<not> incremented.
5725
5726=cut
5727*/
5728
2304df62 5729SV *
864dbfa3 5730Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62
AD		 5731{
5732 register SV *sv;
5733
4561caa4 5734 new_SV(sv);
2304df62 5735 sv_upgrade(sv, SVt_RV);
76e3520e 5736 SvTEMP_off(tmpRef);
d689ffdd 5737 SvRV(sv) = tmpRef;
2304df62 5738 SvROK_on(sv);
2304df62
AD		 5739 return sv;
5740}
5741
954c1994 5742/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5743SV *
864dbfa3 5744Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5745{
5f6447b6 5746 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5747}
5f05dabc 5748
954c1994
GS		 5749/*
5750=for apidoc newSVsv
5751
5752Creates a new SV which is an exact duplicate of the original SV.
5753
5754=cut
5755*/
5756
79072805
LW		 5757/* make an exact duplicate of old */
5758
5759SV *
864dbfa3 5760Perl_newSVsv(pTHX_ register SV *old)
79072805 5761{
463ee0b2 5762 register SV *sv;
79072805
LW		 5763
5764 if (!old)
5765 return Nullsv;
8990e307 5766 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5767 if (ckWARN_d(WARN_INTERNAL))
5768 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5769 return Nullsv;
5770 }
4561caa4 5771 new_SV(sv);
ff68c719 5772 if (SvTEMP(old)) {
5773 SvTEMP_off(old);
463ee0b2 5774 sv_setsv(sv,old);
ff68c719 5775 SvTEMP_on(old);
79072805
LW		 5776 }
5777 else
463ee0b2
LW		 5778 sv_setsv(sv,old);
5779 return sv;
79072805
LW		 5780}
5781
5782void
864dbfa3 5783Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5784{
5785 register HE *entry;
5786 register GV *gv;
5787 register SV *sv;
5788 register I32 i;
5789 register PMOP *pm;
5790 register I32 max;
4802d5d7 5791 char todo[PERL_UCHAR_MAX+1];
79072805 5792
49d8d3a1
MB		 5793 if (!stash)
5794 return;
5795
79072805
LW		 5796 if (!*s) { /* reset ?? searches */
5797 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5798 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5799 }
5800 return;
5801 }
5802
5803 /* reset variables */
5804
5805 if (!HvARRAY(stash))
5806 return;
463ee0b2
LW		 5807
5808 Zero(todo, 256, char);
79072805 5809 while (*s) {
4802d5d7 5810 i = (unsigned char)*s;
79072805
LW		 5811 if (s[1] == '-') {
5812 s += 2;
5813 }
4802d5d7 5814 max = (unsigned char)*s++;
79072805 5815 for ( ; i <= max; i++) {
463ee0b2
LW		 5816 todo[i] = 1;
5817 }
a0d0e21e 5818 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5819 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5820 entry;
5821 entry = HeNEXT(entry))
5822 {
1edc1566 5823 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5824 continue;
1edc1566 5825 gv = (GV*)HeVAL(entry);
79072805 5826 sv = GvSV(gv);
9e35f4b3
GS		 5827 if (SvTHINKFIRST(sv)) {
5828 if (!SvREADONLY(sv) && SvROK(sv))
5829 sv_unref(sv);
5830 continue;
5831 }
a0d0e21e 5832 (void)SvOK_off(sv);
79072805
LW		 5833 if (SvTYPE(sv) >= SVt_PV) {
5834 SvCUR_set(sv, 0);
463ee0b2
LW		 5835 if (SvPVX(sv) != Nullch)
5836 *SvPVX(sv) = '\0';
44a8e56a 5837 SvTAINT(sv);
79072805
LW		 5838 }
5839 if (GvAV(gv)) {
5840 av_clear(GvAV(gv));
5841 }
44a8e56a 5842 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5843 hv_clear(GvHV(gv));
fa6a1c44 5844#ifdef USE_ENVIRON_ARRAY
3280af22 5845 if (gv == PL_envgv)
79072805 5846 environ[0] = Nullch;
a0d0e21e 5847#endif
79072805
LW		 5848 }
5849 }
5850 }
5851 }
5852}
5853
46fc3d4c 5854IO*
864dbfa3 5855Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5856{
5857 IO* io;
5858 GV* gv;
2d8e6c8d 5859 STRLEN n_a;
46fc3d4c 5860
5861 switch (SvTYPE(sv)) {
5862 case SVt_PVIO:
5863 io = (IO*)sv;
5864 break;
5865 case SVt_PVGV:
5866 gv = (GV*)sv;
5867 io = GvIO(gv);
5868 if (!io)
cea2e8a9 5869 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5870 break;
5871 default:
5872 if (!SvOK(sv))
cea2e8a9 5873 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5874 if (SvROK(sv))
5875 return sv_2io(SvRV(sv));
2d8e6c8d 5876 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5877 if (gv)
5878 io = GvIO(gv);
5879 else
5880 io = 0;
5881 if (!io)
cea2e8a9 5882 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5883 break;
5884 }
5885 return io;
5886}
5887
79072805 5888CV *
864dbfa3 5889Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5890{
5891 GV *gv;
5892 CV *cv;
2d8e6c8d 5893 STRLEN n_a;
79072805
LW		 5894
5895 if (!sv)
93a17b20 5896 return *gvp = Nullgv, Nullcv;
79072805 5897 switch (SvTYPE(sv)) {
79072805
LW		 5898 case SVt_PVCV:
5899 *st = CvSTASH(sv);
5900 *gvp = Nullgv;
5901 return (CV*)sv;
5902 case SVt_PVHV:
5903 case SVt_PVAV:
5904 *gvp = Nullgv;
5905 return Nullcv;
8990e307
LW		 5906 case SVt_PVGV:
5907 gv = (GV*)sv;
a0d0e21e 5908 *gvp = gv;
8990e307
LW		 5909 *st = GvESTASH(gv);
5910 goto fix_gv;
5911
79072805 5912 default:
a0d0e21e
LW		 5913 if (SvGMAGICAL(sv))
5914 mg_get(sv);
5915 if (SvROK(sv)) {
f5284f61
IZ		 5916 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5917 tryAMAGICunDEREF(to_cv);
5918
62f274bf
GS		 5919 sv = SvRV(sv);
5920 if (SvTYPE(sv) == SVt_PVCV) {
5921 cv = (CV*)sv;
5922 *gvp = Nullgv;
5923 *st = CvSTASH(cv);
5924 return cv;
5925 }
5926 else if(isGV(sv))
5927 gv = (GV*)sv;
5928 else
cea2e8a9 5929 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5930 }
62f274bf 5931 else if (isGV(sv))
79072805
LW		 5932 gv = (GV*)sv;
5933 else
2d8e6c8d 5934 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5935 *gvp = gv;
5936 if (!gv)
5937 return Nullcv;
5938 *st = GvESTASH(gv);
8990e307 5939 fix_gv:
8ebc5c01 5940 if (lref && !GvCVu(gv)) {
4633a7c4 5941 SV *tmpsv;
748a9306 5942 ENTER;
4633a7c4 5943 tmpsv = NEWSV(704,0);
16660edb 5944 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5945 /* XXX this is probably not what they think they're getting.
5946 * It has the same effect as "sub name;", i.e. just a forward
5947 * declaration! */
774d564b 5948 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5949 newSVOP(OP_CONST, 0, tmpsv),
5950 Nullop,
8990e307 5951 Nullop);
748a9306 5952 LEAVE;
8ebc5c01 5953 if (!GvCVu(gv))
cea2e8a9 5954 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5955 }
8ebc5c01 5956 return GvCVu(gv);
79072805
LW		 5957 }
5958}
5959
c461cf8f
JH		 5960/*
5961=for apidoc sv_true
5962
5963Returns true if the SV has a true value by Perl's rules.
5964
5965=cut
5966*/
5967
79072805 5968I32
864dbfa3 5969Perl_sv_true(pTHX_ register SV *sv)
79072805 5970{
8990e307
LW		 5971 if (!sv)
5972 return 0;
79072805 5973 if (SvPOK(sv)) {
4e35701f
NIS		 5974 register XPV* tXpv;
5975 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5976 (tXpv->xpv_cur > 1 ||
4e35701f 5977 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5978 return 1;
5979 else
5980 return 0;
5981 }
5982 else {
5983 if (SvIOK(sv))
463ee0b2 5984 return SvIVX(sv) != 0;
79072805
LW		 5985 else {
5986 if (SvNOK(sv))
463ee0b2 5987 return SvNVX(sv) != 0.0;
79072805 5988 else
463ee0b2 5989 return sv_2bool(sv);
79072805
LW		 5990 }
5991 }
5992}
79072805 5993
ff68c719 5994IV
864dbfa3 5995Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5996{
25da4f38
IZ		 5997 if (SvIOK(sv)) {
5998 if (SvIsUV(sv))
5999 return (IV)SvUVX(sv);
ff68c719 6000 return SvIVX(sv);
25da4f38 6001 }
ff68c719 6002 return sv_2iv(sv);
85e6fe83 6003}
85e6fe83 6004
ff68c719 6005UV
864dbfa3 6006Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 6007{
25da4f38
IZ		 6008 if (SvIOK(sv)) {
6009 if (SvIsUV(sv))
6010 return SvUVX(sv);
6011 return (UV)SvIVX(sv);
6012 }
ff68c719 6013 return sv_2uv(sv);
6014}
85e6fe83 6015
65202027 6016NV
864dbfa3 6017Perl_sv_nv(pTHX_ register SV *sv)
79072805 6018{
ff68c719 6019 if (SvNOK(sv))
6020 return SvNVX(sv);
6021 return sv_2nv(sv);
79072805 6022}
79072805 6023
79072805 6024char *
864dbfa3 6025Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 6026{
6027 STRLEN n_a;
6028
6029 if (SvPOK(sv))
6030 return SvPVX(sv);
6031
6032 return sv_2pv(sv, &n_a);
6033}
6034
6035char *
864dbfa3 6036Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 6037{
85e6fe83
LW		 6038 if (SvPOK(sv)) {
6039 *lp = SvCUR(sv);
a0d0e21e 6040 return SvPVX(sv);
85e6fe83 6041 }
463ee0b2 6042 return sv_2pv(sv, lp);
79072805 6043}
79072805 6044
c461cf8f
JH		 6045/*
6046=for apidoc sv_pvn_force
6047
6048Get a sensible string out of the SV somehow.
6049
6050=cut
6051*/
6052
a0d0e21e 6053char *
864dbfa3 6054Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 6055{
6056 char *s;
6057
6fc92669
GS		 6058 if (SvTHINKFIRST(sv) && !SvROK(sv))
6059 sv_force_normal(sv);
1c846c1f 6060
a0d0e21e
LW		 6061 if (SvPOK(sv)) {
6062 *lp = SvCUR(sv);
6063 }
6064 else {
748a9306 6065 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
cea2e8a9 6066 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 6067 PL_op_name[PL_op->op_type]);
a0d0e21e 6068 }
4633a7c4
LW		 6069 else
6070 s = sv_2pv(sv, lp);
a0d0e21e
LW		 6071 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
6072 STRLEN len = *lp;
1c846c1f 6073
a0d0e21e
LW		 6074 if (SvROK(sv))
6075 sv_unref(sv);
6076 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
6077 SvGROW(sv, len + 1);
6078 Move(s,SvPVX(sv),len,char);
6079 SvCUR_set(sv, len);
6080 *SvEND(sv) = '\0';
6081 }
6082 if (!SvPOK(sv)) {
6083 SvPOK_on(sv); /* validate pointer */
6084 SvTAINT(sv);
1d7c1841
GS		 6085 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
6086 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 6087 }
6088 }
6089 return SvPVX(sv);
6090}
6091
6092char *
7340a771
GS		 6093Perl_sv_pvbyte(pTHX_ SV *sv)
6094{
6095 return sv_pv(sv);
6096}
6097
6098char *
6099Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
6100{
6101 return sv_pvn(sv,lp);
6102}
6103
6104char *
6105Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
6106{
6107 return sv_pvn_force(sv,lp);
6108}
6109
6110char *
6111Perl_sv_pvutf8(pTHX_ SV *sv)
6112{
560a288e 6113 sv_utf8_upgrade(sv);
7340a771
GS		 6114 return sv_pv(sv);
6115}
6116
6117char *
6118Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
6119{
560a288e 6120 sv_utf8_upgrade(sv);
7340a771
GS		 6121 return sv_pvn(sv,lp);
6122}
6123
c461cf8f
JH		 6124/*
6125=for apidoc sv_pvutf8n_force
6126
6127Get a sensible UTF8-encoded string out of the SV somehow. See
6128L</sv_pvn_force>.
6129
6130=cut
6131*/
6132
7340a771
GS		 6133char *
6134Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
6135{
560a288e 6136 sv_utf8_upgrade(sv);
7340a771
GS		 6137 return sv_pvn_force(sv,lp);
6138}
6139
c461cf8f
JH		 6140/*
6141=for apidoc sv_reftype
6142
6143Returns a string describing what the SV is a reference to.
6144
6145=cut
6146*/
6147
7340a771 6148char *
864dbfa3 6149Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 6150{
6151 if (ob && SvOBJECT(sv))
6152 return HvNAME(SvSTASH(sv));
6153 else {
6154 switch (SvTYPE(sv)) {
6155 case SVt_NULL:
6156 case SVt_IV:
6157 case SVt_NV:
6158 case SVt_RV:
6159 case SVt_PV:
6160 case SVt_PVIV:
6161 case SVt_PVNV:
6162 case SVt_PVMG:
6163 case SVt_PVBM:
6164 if (SvROK(sv))
6165 return "REF";
6166 else
6167 return "SCALAR";
6168 case SVt_PVLV: return "LVALUE";
6169 case SVt_PVAV: return "ARRAY";
6170 case SVt_PVHV: return "HASH";
6171 case SVt_PVCV: return "CODE";
6172 case SVt_PVGV: return "GLOB";
1d2dff63 6173 case SVt_PVFM: return "FORMAT";
27f9d8f3 6174 case SVt_PVIO: return "IO";
a0d0e21e
LW		 6175 default: return "UNKNOWN";
6176 }
6177 }
6178}
6179
954c1994
GS		 6180/*
6181=for apidoc sv_isobject
6182
6183Returns a boolean indicating whether the SV is an RV pointing to a blessed
6184object. If the SV is not an RV, or if the object is not blessed, then this
6185will return false.
6186
6187=cut
6188*/
6189
463ee0b2 6190int
864dbfa3 6191Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 6192{
68dc0745 6193 if (!sv)
6194 return 0;
6195 if (SvGMAGICAL(sv))
6196 mg_get(sv);
85e6fe83
LW		 6197 if (!SvROK(sv))
6198 return 0;
6199 sv = (SV*)SvRV(sv);
6200 if (!SvOBJECT(sv))
6201 return 0;
6202 return 1;
6203}
6204
954c1994
GS		 6205/*
6206=for apidoc sv_isa
6207
6208Returns a boolean indicating whether the SV is blessed into the specified
6209class. This does not check for subtypes; use C<sv_derived_from> to verify
6210an inheritance relationship.
6211
6212=cut
6213*/
6214
85e6fe83 6215int
864dbfa3 6216Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 6217{
68dc0745 6218 if (!sv)
6219 return 0;
6220 if (SvGMAGICAL(sv))
6221 mg_get(sv);
ed6116ce 6222 if (!SvROK(sv))
463ee0b2 6223 return 0;
ed6116ce
LW		 6224 sv = (SV*)SvRV(sv);
6225 if (!SvOBJECT(sv))
463ee0b2
LW		 6226 return 0;
6227
6228 return strEQ(HvNAME(SvSTASH(sv)), name);
6229}
6230
954c1994
GS		 6231/*
6232=for apidoc newSVrv
6233
6234Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
6235it will be upgraded to one. If C<classname> is non-null then the new SV will
6236be blessed in the specified package. The new SV is returned and its
6237reference count is 1.
6238
6239=cut
6240*/
6241
463ee0b2 6242SV*
864dbfa3 6243Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 6244{
463ee0b2
LW		 6245 SV *sv;
6246
4561caa4 6247 new_SV(sv);
51cf62d8 6248
2213622d 6249 SV_CHECK_THINKFIRST(rv);
51cf62d8 6250 SvAMAGIC_off(rv);
51cf62d8 6251
0199fce9
JD		 6252 if (SvTYPE(rv) >= SVt_PVMG) {
6253 U32 refcnt = SvREFCNT(rv);
6254 SvREFCNT(rv) = 0;
6255 sv_clear(rv);
6256 SvFLAGS(rv) = 0;
6257 SvREFCNT(rv) = refcnt;
6258 }
6259
51cf62d8 6260 if (SvTYPE(rv) < SVt_RV)
0199fce9
JD		 6261 sv_upgrade(rv, SVt_RV);
6262 else if (SvTYPE(rv) > SVt_RV) {
6263 (void)SvOOK_off(rv);
6264 if (SvPVX(rv) && SvLEN(rv))
6265 Safefree(SvPVX(rv));
6266 SvCUR_set(rv, 0);
6267 SvLEN_set(rv, 0);
6268 }
51cf62d8
OT		 6269
6270 (void)SvOK_off(rv);
053fc874 6271 SvRV(rv) = sv;
ed6116ce 6272 SvROK_on(rv);
463ee0b2 6273
a0d0e21e
LW		 6274 if (classname) {
6275 HV* stash = gv_stashpv(classname, TRUE);
6276 (void)sv_bless(rv, stash);
6277 }
6278 return sv;
6279}
6280
954c1994
GS		 6281/*
6282=for apidoc sv_setref_pv
6283
6284Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
6285argument will be upgraded to an RV. That RV will be modified to point to
6286the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
6287into the SV. The C<classname> argument indicates the package for the
6288blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6289will be returned and will have a reference count of 1.
6290
6291Do not use with other Perl types such as HV, AV, SV, CV, because those
6292objects will become corrupted by the pointer copy process.
6293
6294Note that C<sv_setref_pvn> copies the string while this copies the pointer.
6295
6296=cut
6297*/
6298
a0d0e21e 6299SV*
864dbfa3 6300Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 6301{
189b2af5 6302 if (!pv) {
3280af22 6303 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 6304 SvSETMAGIC(rv);
6305 }
a0d0e21e 6306 else
56431972 6307 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 6308 return rv;
6309}
6310
954c1994
GS		 6311/*
6312=for apidoc sv_setref_iv
6313
6314Copies an integer into a new SV, optionally blessing the SV. The C<rv>
6315argument will be upgraded to an RV. That RV will be modified to point to
6316the new SV. The C<classname> argument indicates the package for the
6317blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6318will be returned and will have a reference count of 1.
6319
6320=cut
6321*/
6322
a0d0e21e 6323SV*
864dbfa3 6324Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 6325{
6326 sv_setiv(newSVrv(rv,classname), iv);
6327 return rv;
6328}
6329
954c1994
GS		 6330/*
6331=for apidoc sv_setref_nv
6332
6333Copies a double into a new SV, optionally blessing the SV. The C<rv>
6334argument will be upgraded to an RV. That RV will be modified to point to
6335the new SV. The C<classname> argument indicates the package for the
6336blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
6337will be returned and will have a reference count of 1.
6338
6339=cut
6340*/
6341
a0d0e21e 6342SV*
65202027 6343Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 6344{
6345 sv_setnv(newSVrv(rv,classname), nv);
6346 return rv;
6347}
463ee0b2 6348
954c1994
GS		 6349/*
6350=for apidoc sv_setref_pvn
6351
6352Copies a string into a new SV, optionally blessing the SV. The length of the
6353string must be specified with C<n>. The C<rv> argument will be upgraded to
6354an RV. That RV will be modified to point to the new SV. The C<classname>
6355argument indicates the package for the blessing. Set C<classname> to
6356C<Nullch> to avoid the blessing. The new SV will be returned and will have
6357a reference count of 1.
6358
6359Note that C<sv_setref_pv> copies the pointer while this copies the string.
6360
6361=cut
6362*/
6363
a0d0e21e 6364SV*
864dbfa3 6365Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 6366{
6367 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 6368 return rv;
6369}
6370
954c1994
GS		 6371/*
6372=for apidoc sv_bless
6373
6374Blesses an SV into a specified package. The SV must be an RV. The package
6375must be designated by its stash (see C<gv_stashpv()>). The reference count
6376of the SV is unaffected.
6377
6378=cut
6379*/
6380
a0d0e21e 6381SV*
864dbfa3 6382Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 6383{
76e3520e 6384 SV *tmpRef;
a0d0e21e 6385 if (!SvROK(sv))
cea2e8a9 6386 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 6387 tmpRef = SvRV(sv);
6388 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
6389 if (SvREADONLY(tmpRef))
cea2e8a9 6390 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 6391 if (SvOBJECT(tmpRef)) {
6392 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 6393 --PL_sv_objcount;
76e3520e 6394 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 6395 }
a0d0e21e 6396 }
76e3520e
GS		 6397 SvOBJECT_on(tmpRef);
6398 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 6399 ++PL_sv_objcount;
76e3520e
GS		 6400 (void)SvUPGRADE(tmpRef, SVt_PVMG);
6401 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 6402
2e3febc6
CS		 6403 if (Gv_AMG(stash))
6404 SvAMAGIC_on(sv);
6405 else
6406 SvAMAGIC_off(sv);
a0d0e21e
LW		 6407
6408 return sv;
6409}
6410
76e3520e 6411STATIC void
cea2e8a9 6412S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 6413{
850fabdf
GS		 6414 void *xpvmg;
6415
a0d0e21e
LW		 6416 assert(SvTYPE(sv) == SVt_PVGV);
6417 SvFAKE_off(sv);
6418 if (GvGP(sv))
1edc1566 6419 gp_free((GV*)sv);
e826b3c7
GS		 6420 if (GvSTASH(sv)) {
6421 SvREFCNT_dec(GvSTASH(sv));
6422 GvSTASH(sv) = Nullhv;
6423 }
a0d0e21e
LW		 6424 sv_unmagic(sv, '*');
6425 Safefree(GvNAME(sv));
a5f75d66 6426 GvMULTI_off(sv);
850fabdf
GS		 6427
6428 /* need to keep SvANY(sv) in the right arena */
6429 xpvmg = new_XPVMG();
6430 StructCopy(SvANY(sv), xpvmg, XPVMG);
6431 del_XPVGV(SvANY(sv));
6432 SvANY(sv) = xpvmg;
6433
a0d0e21e
LW		 6434 SvFLAGS(sv) &= ~SVTYPEMASK;
6435 SvFLAGS(sv) |= SVt_PVMG;
6436}
6437
954c1994 6438/*
840a7b70 6439=for apidoc sv_unref_flags
954c1994
GS		 6440
6441Unsets the RV status of the SV, and decrements the reference count of
6442whatever was being referenced by the RV. This can almost be thought of
840a7b70
IZ		 6443as a reversal of C<newSVrv>. The C<cflags> argument can contain
6444C<SV_IMMEDIATE_UNREF> to force the reference count to be decremented
6445(otherwise the decrementing is conditional on the reference count being
6446different from one or the reference being a readonly SV).
7889fe52 6447See C<SvROK_off>.
954c1994
GS		 6448
6449=cut
6450*/
6451
ed6116ce 6452void
840a7b70 6453Perl_sv_unref_flags(pTHX_ SV *sv, U32 flags)
ed6116ce 6454{
a0d0e21e 6455 SV* rv = SvRV(sv);
810b8aa5
GS		 6456
6457 if (SvWEAKREF(sv)) {
6458 sv_del_backref(sv);
6459 SvWEAKREF_off(sv);
6460 SvRV(sv) = 0;
6461 return;
6462 }
ed6116ce
LW		 6463 SvRV(sv) = 0;
6464 SvROK_off(sv);
840a7b70 6465 if (SvREFCNT(rv) != 1 || SvREADONLY(rv) || flags) /* SV_IMMEDIATE_UNREF */
4633a7c4 6466 SvREFCNT_dec(rv);
840a7b70 6467 else /* XXX Hack, but hard to make $a=$a->[1] work otherwise */
4633a7c4 6468 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 6469}
8990e307 6470
840a7b70
IZ		 6471/*
6472=for apidoc sv_unref
6473
6474Unsets the RV status of the SV, and decrements the reference count of
6475whatever was being referenced by the RV. This can almost be thought of
6476as a reversal of C<newSVrv>. This is C<sv_unref_flags> with the C<flag>
7889fe52 6477being zero. See C<SvROK_off>.
840a7b70
IZ		 6478
6479=cut
6480*/
6481
6482void
6483Perl_sv_unref(pTHX_ SV *sv)
6484{
6485 sv_unref_flags(sv, 0);
6486}
6487
bbce6d69 6488void
864dbfa3 6489Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 6490{
6491 sv_magic((sv), Nullsv, 't', Nullch, 0);
6492}
6493
6494void
864dbfa3 6495Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 6496{
13f57bf8 6497 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 6498 MAGIC *mg = mg_find(sv, 't');
6499 if (mg)
565764a8 6500 mg->mg_len &= ~1;
36477c24 6501 }
bbce6d69 6502}
6503
6504bool
864dbfa3 6505Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 6506{
13f57bf8 6507 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 6508 MAGIC *mg = mg_find(sv, 't');
155aba94 6509 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 6510 return TRUE;
6511 }
6512 return FALSE;
bbce6d69 6513}
6514
954c1994
GS		 6515/*
6516=for apidoc sv_setpviv
6517
6518Copies an integer into the given SV, also updating its string value.
6519Does not handle 'set' magic. See C<sv_setpviv_mg>.
6520
6521=cut
6522*/
6523
84902520 6524void
864dbfa3 6525Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 6526{
25da4f38
IZ		 6527 char buf[TYPE_CHARS(UV)];
6528 char *ebuf;
6529 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 6530
25da4f38 6531 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 6532}
6533
ef50df4b 6534
954c1994
GS		 6535/*
6536=for apidoc sv_setpviv_mg
6537
6538Like C<sv_setpviv>, but also handles 'set' magic.
6539
6540=cut
6541*/
6542
ef50df4b 6543void
864dbfa3 6544Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 6545{
25da4f38
IZ		 6546 char buf[TYPE_CHARS(UV)];
6547 char *ebuf;
6548 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
6549
6550 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 6551 SvSETMAGIC(sv);
6552}
6553
cea2e8a9
GS		 6554#if defined(PERL_IMPLICIT_CONTEXT)
6555void
6556Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
6557{
6558 dTHX;
6559 va_list args;
6560 va_start(args, pat);
c5be433b 6561 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 6562 va_end(args);
6563}
6564
6565
6566void
6567Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
6568{
6569 dTHX;
6570 va_list args;
6571 va_start(args, pat);
c5be433b 6572 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 6573 va_end(args);
cea2e8a9
GS		 6574}
6575#endif
6576
954c1994
GS		 6577/*
6578=for apidoc sv_setpvf
6579
6580Processes its arguments like C<sprintf> and sets an SV to the formatted
6581output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
6582
6583=cut
6584*/
6585
46fc3d4c 6586void
864dbfa3 6587Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 6588{
6589 va_list args;
46fc3d4c 6590 va_start(args, pat);
c5be433b 6591 sv_vsetpvf(sv, pat, &args);
46fc3d4c 6592 va_end(args);
6593}
6594
c5be433b
GS		 6595void
6596Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6597{
6598 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6599}
ef50df4b 6600
954c1994
GS		 6601/*
6602=for apidoc sv_setpvf_mg
6603
6604Like C<sv_setpvf>, but also handles 'set' magic.
6605
6606=cut
6607*/
6608
ef50df4b 6609void
864dbfa3 6610Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 6611{
6612 va_list args;
ef50df4b 6613 va_start(args, pat);
c5be433b 6614 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 6615 va_end(args);
c5be433b
GS		 6616}
6617
6618void
6619Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6620{
6621 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 6622 SvSETMAGIC(sv);
6623}
6624
cea2e8a9
GS		 6625#if defined(PERL_IMPLICIT_CONTEXT)
6626void
6627Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
6628{
6629 dTHX;
6630 va_list args;
6631 va_start(args, pat);
c5be433b 6632 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 6633 va_end(args);
6634}
6635
6636void
6637Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
6638{
6639 dTHX;
6640 va_list args;
6641 va_start(args, pat);
c5be433b 6642 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 6643 va_end(args);
cea2e8a9
GS		 6644}
6645#endif
6646
954c1994
GS		 6647/*
6648=for apidoc sv_catpvf
6649
6650Processes its arguments like C<sprintf> and appends the formatted output
6651to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
6652typically be called after calling this function to handle 'set' magic.
6653
6654=cut
6655*/
6656
46fc3d4c 6657void
864dbfa3 6658Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 6659{
6660 va_list args;
46fc3d4c 6661 va_start(args, pat);
c5be433b 6662 sv_vcatpvf(sv, pat, &args);
46fc3d4c 6663 va_end(args);
6664}
6665
ef50df4b 6666void
c5be433b
GS		 6667Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
6668{
6669 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
6670}
6671
954c1994
GS		 6672/*
6673=for apidoc sv_catpvf_mg
6674
6675Like C<sv_catpvf>, but also handles 'set' magic.
6676
6677=cut
6678*/
6679
c5be433b 6680void
864dbfa3 6681Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 6682{
6683 va_list args;
ef50df4b 6684 va_start(args, pat);
c5be433b 6685 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 6686 va_end(args);
c5be433b
GS		 6687}
6688
6689void
6690Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
6691{
6692 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 6693 SvSETMAGIC(sv);
6694}
6695
954c1994
GS		 6696/*
6697=for apidoc sv_vsetpvfn
6698
6699Works like C<vcatpvfn> but copies the text into the SV instead of
6700appending it.
6701
6702=cut
6703*/
6704
46fc3d4c 6705void
7d5ea4e7 6706Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 6707{
6708 sv_setpvn(sv, "", 0);
7d5ea4e7 6709 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 6710}
6711
211dfcf1 6712I32
9dd79c3f 6713S_expect_number(pTHX_ char** pattern)
211dfcf1
HS		 6714{
6715 I32 var = 0;
6716 switch (**pattern) {
6717 case '1': case '2': case '3':
6718 case '4': case '5': case '6':
6719 case '7': case '8': case '9':
6720 while (isDIGIT(**pattern))
6721 var = var * 10 + (*(*pattern)++ - '0');
6722 }
6723 return var;
6724}
9dd79c3f 6725#define EXPECT_NUMBER(pattern, var) (var = S_expect_number(aTHX_ &pattern))
211dfcf1 6726
954c1994
GS		 6727/*
6728=for apidoc sv_vcatpvfn
6729
6730Processes its arguments like C<vsprintf> and appends the formatted output
6731to an SV. Uses an array of SVs if the C style variable argument list is
6732missing (NULL). When running with taint checks enabled, indicates via
6733C<maybe_tainted> if results are untrustworthy (often due to the use of
6734locales).
6735
6736=cut
6737*/
6738
46fc3d4c 6739void
7d5ea4e7 6740Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 6741{
6742 char *p;
6743 char *q;
6744 char *patend;
fc36a67e 6745 STRLEN origlen;
46fc3d4c 6746 I32 svix = 0;
c635e13b 6747 static char nullstr[] = "(null)";
7e2040f0 6748 SV *argsv;
46fc3d4c 6749
6750 /* no matter what, this is a string now */
fc36a67e 6751 (void)SvPV_force(sv, origlen);
46fc3d4c 6752
fc36a67e 6753 /* special-case "", "%s", and "%_" */
46fc3d4c 6754 if (patlen == 0)
6755 return;
fc36a67e 6756 if (patlen == 2 && pat[0] == '%') {
6757 switch (pat[1]) {
6758 case 's':
c635e13b 6759 if (args) {
6760 char *s = va_arg(*args, char*);
6761 sv_catpv(sv, s ? s : nullstr);
6762 }
7e2040f0 6763 else if (svix < svmax) {
fc36a67e 6764 sv_catsv(sv, *svargs);
7e2040f0
GS		 6765 if (DO_UTF8(*svargs))
6766 SvUTF8_on(sv);
6767 }
fc36a67e 6768 return;
6769 case '_':
6770 if (args) {
7e2040f0
GS		 6771 argsv = va_arg(*args, SV*);
6772 sv_catsv(sv, argsv);
6773 if (DO_UTF8(argsv))
6774 SvUTF8_on(sv);
fc36a67e 6775 return;
6776 }
6777 /* See comment on '_' below */
6778 break;
6779 }
46fc3d4c 6780 }
6781
6782 patend = (char*)pat + patlen;
6783 for (p = (char*)pat; p < patend; p = q) {
6784 bool alt = FALSE;
6785 bool left = FALSE;
b22c7a20 6786 bool vectorize = FALSE;
211dfcf1 6787 bool vectorarg = FALSE;
b2e23cf9 6788 bool vec_utf = FALSE;
46fc3d4c 6789 char fill = ' ';
6790 char plus = 0;
6791 char intsize = 0;
6792 STRLEN width = 0;
fc36a67e 6793 STRLEN zeros = 0;
46fc3d4c 6794 bool has_precis = FALSE;
6795 STRLEN precis = 0;
7e2040f0 6796 bool is_utf = FALSE;
eb3fce90 6797
46fc3d4c 6798 char esignbuf[4];
ad391ad9 6799 U8 utf8buf[UTF8_MAXLEN+1];
46fc3d4c 6800 STRLEN esignlen = 0;
6801
6802 char *eptr = Nullch;
fc36a67e 6803 STRLEN elen = 0;
089c015b
JH		 6804 /* Times 4: a decimal digit takes more than 3 binary digits.
6805 * NV_DIG: mantissa takes than many decimal digits.
6806 * Plus 32: Playing safe. */
6807 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6808 /* large enough for "%#.#f" --chip */
6809 /* what about long double NVs? --jhi */
b22c7a20
GS		 6810
6811 SV *vecsv;
a05b299f 6812 U8 *vecstr = Null(U8*);
b22c7a20 6813 STRLEN veclen = 0;
46fc3d4c 6814 char c;
6815 int i;
6816 unsigned base;
6817 IV iv;
6818 UV uv;
65202027 6819 NV nv;
46fc3d4c 6820 STRLEN have;
6821 STRLEN need;
6822 STRLEN gap;
b22c7a20
GS		 6823 char *dotstr = ".";
6824 STRLEN dotstrlen = 1;
211dfcf1 6825 I32 efix = 0; /* explicit format parameter index */
eb3fce90 6826 I32 ewix = 0; /* explicit width index */
211dfcf1
HS		 6827 I32 epix = 0; /* explicit precision index */
6828 I32 evix = 0; /* explicit vector index */
eb3fce90 6829 bool asterisk = FALSE;
46fc3d4c 6830
211dfcf1 6831 /* echo everything up to the next format specification */
46fc3d4c 6832 for (q = p; q < patend && *q != '%'; ++q) ;
6833 if (q > p) {
6834 sv_catpvn(sv, p, q - p);
6835 p = q;
6836 }
6837 if (q++ >= patend)
6838 break;
6839
211dfcf1
HS		 6840/*
6841 We allow format specification elements in this order:
6842 \d+\$ explicit format parameter index
6843 [-+ 0#]+ flags
6844 \*?(\d+\$)?v vector with optional (optionally specified) arg
6845 \d+|\*(\d+\$)? width using optional (optionally specified) arg
6846 \.(\d*|\*(\d+\$)?) precision using optional (optionally specified) arg
6847 [hlqLV] size
6848 [%bcdefginopsux_DFOUX] format (mandatory)
6849*/
6850 if (EXPECT_NUMBER(q, width)) {
6851 if (*q == '$') {
6852 ++q;
6853 efix = width;
6854 } else {
6855 goto gotwidth;
6856 }
6857 }
6858
fc36a67e 6859 /* FLAGS */
6860
46fc3d4c 6861 while (*q) {
6862 switch (*q) {
6863 case ' ':
6864 case '+':
6865 plus = *q++;
6866 continue;
6867
6868 case '-':
6869 left = TRUE;
6870 q++;
6871 continue;
6872
6873 case '0':
6874 fill = *q++;
6875 continue;
6876
6877 case '#':
6878 alt = TRUE;
6879 q++;
6880 continue;
6881
fc36a67e 6882 default:
6883 break;
6884 }
6885 break;
6886 }
46fc3d4c 6887
211dfcf1 6888 tryasterisk:
eb3fce90 6889 if (*q == '*') {
211dfcf1
HS		 6890 q++;
6891 if (EXPECT_NUMBER(q, ewix))
6892 if (*q++ != '$')
6893 goto unknown;
eb3fce90 6894 asterisk = TRUE;
211dfcf1
HS		 6895 }
6896 if (*q == 'v') {
eb3fce90 6897 q++;
211dfcf1
HS		 6898 if (vectorize)
6899 goto unknown;
6900 if (vectorarg = asterisk) {
6901 evix = ewix;
6902 ewix = 0;
6903 asterisk = FALSE;
6904 }
6905 vectorize = TRUE;
6906 goto tryasterisk;
eb3fce90
JH		 6907 }
6908
211dfcf1
HS		 6909 if (!asterisk)
6910 EXPECT_NUMBER(q, width);
6911
6912 if (vectorize) {
6913 if (vectorarg) {
6914 if (args)
6915 vecsv = va_arg(*args, SV*);
6916 else
6917 vecsv = (evix ? evix <= svmax : svix < svmax) ?
6918 svargs[ewix ? ewix-1 : svix++] : &PL_sv_undef;
4459522c 6919 dotstr = SvPVx(vecsv, dotstrlen);
211dfcf1
HS		 6920 if (DO_UTF8(vecsv))
6921 is_utf = TRUE;
6922 }
6923 if (args) {
6924 vecsv = va_arg(*args, SV*);
6925 vecstr = (U8*)SvPVx(vecsv,veclen);
b2e23cf9 6926 vec_utf = DO_UTF8(vecsv);
eb3fce90 6927 }
211dfcf1
HS		 6928 else if (efix ? efix <= svmax : svix < svmax) {
6929 vecsv = svargs[efix ? efix-1 : svix++];
6930 vecstr = (U8*)SvPVx(vecsv,veclen);
b2e23cf9 6931 vec_utf = DO_UTF8(vecsv);
211dfcf1
HS		 6932 }
6933 else {
6934 vecstr = (U8*)"";
6935 veclen = 0;
6936 }
eb3fce90 6937 }
fc36a67e 6938
eb3fce90 6939 if (asterisk) {
fc36a67e 6940 if (args)
6941 i = va_arg(*args, int);
6942 else
eb3fce90
JH		 6943 i = (ewix ? ewix <= svmax : svix < svmax) ?
6944 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6945 left |= (i < 0);
6946 width = (i < 0) ? -i : i;
fc36a67e 6947 }
211dfcf1 6948 gotwidth:
fc36a67e 6949
6950 /* PRECISION */
46fc3d4c 6951
fc36a67e 6952 if (*q == '.') {
6953 q++;
6954 if (*q == '*') {
211dfcf1
HS		 6955 q++;
6956 if (EXPECT_NUMBER(q, epix) && *q++ != '$')
6957 goto unknown;
46fc3d4c 6958 if (args)
6959 i = va_arg(*args, int);
6960 else
eb3fce90
JH		 6961 i = (ewix ? ewix <= svmax : svix < svmax)
6962 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6963 precis = (i < 0) ? 0 : i;
fc36a67e 6964 }
6965 else {
6966 precis = 0;
6967 while (isDIGIT(*q))
6968 precis = precis * 10 + (*q++ - '0');
6969 }
6970 has_precis = TRUE;
6971 }
46fc3d4c 6972
fc36a67e 6973 /* SIZE */
46fc3d4c 6974
fc36a67e 6975 switch (*q) {
e5c81feb 6976#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6f9bb7fd 6977 case 'L': /* Ld */
e5c81feb
JH		 6978 /* FALL THROUGH */
6979#endif
6980#ifdef HAS_QUAD
6f9bb7fd
GS		 6981 case 'q': /* qd */
6982 intsize = 'q';
6983 q++;
6984 break;
6985#endif
fc36a67e 6986 case 'l':
e5c81feb
JH		 6987#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6988 if (*(q + 1) == 'l') { /* lld, llf */
fc36a67e 6989 intsize = 'q';
6990 q += 2;
46fc3d4c 6991 break;
cf2093f6 6992 }
fc36a67e 6993#endif
6f9bb7fd 6994 /* FALL THROUGH */
fc36a67e 6995 case 'h':
cf2093f6 6996 /* FALL THROUGH */
fc36a67e 6997 case 'V':
6998 intsize = *q++;
46fc3d4c 6999 break;
7000 }
7001
fc36a67e 7002 /* CONVERSION */
7003
211dfcf1
HS		 7004 if (*q == '%') {
7005 eptr = q++;
7006 elen = 1;
7007 goto string;
7008 }
7009
7010 if (!args)
7011 argsv = (efix ? efix <= svmax : svix < svmax) ?
7012 svargs[efix ? efix-1 : svix++] : &PL_sv_undef;
7013
46fc3d4c 7014 switch (c = *q++) {
7015
7016 /* STRINGS */
7017
46fc3d4c 7018 case 'c':
211dfcf1 7019 uv = args ? va_arg(*args, int) : SvIVx(argsv);
3969a896 7020 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 7021 eptr = (char*)utf8buf;
7022 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 7023 is_utf = TRUE;
7024 }
7025 else {
7026 c = (char)uv;
7027 eptr = &c;
7028 elen = 1;
a0ed51b3 7029 }
46fc3d4c 7030 goto string;
7031
46fc3d4c 7032 case 's':
7033 if (args) {
fc36a67e 7034 eptr = va_arg(*args, char*);
c635e13b 7035 if (eptr)
1d7c1841
GS		 7036#ifdef MACOS_TRADITIONAL
7037 /* On MacOS, %#s format is used for Pascal strings */
7038 if (alt)
7039 elen = *eptr++;
7040 else
7041#endif
c635e13b 7042 elen = strlen(eptr);
7043 else {
7044 eptr = nullstr;
7045 elen = sizeof nullstr - 1;
7046 }
46fc3d4c 7047 }
211dfcf1 7048 else {
7e2040f0
GS		 7049 eptr = SvPVx(argsv, elen);
7050 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 7051 if (has_precis && precis < elen) {
7052 I32 p = precis;
7e2040f0 7053 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 7054 precis = p;
7055 }
7056 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 7057 width += elen - sv_len_utf8(argsv);
a0ed51b3 7058 }
7e2040f0 7059 is_utf = TRUE;
a0ed51b3
LW		 7060 }
7061 }
46fc3d4c 7062 goto string;
7063
fc36a67e 7064 case '_':
7065 /*
7066 * The "%_" hack might have to be changed someday,
7067 * if ISO or ANSI decide to use '_' for something.
7068 * So we keep it hidden from users' code.
7069 */
7070 if (!args)
7071 goto unknown;
211dfcf1 7072 argsv = va_arg(*args, SV*);
7e2040f0
GS		 7073 eptr = SvPVx(argsv, elen);
7074 if (DO_UTF8(argsv))
7075 is_utf = TRUE;
fc36a67e 7076
46fc3d4c 7077 string:
b22c7a20 7078 vectorize = FALSE;
46fc3d4c 7079 if (has_precis && elen > precis)
7080 elen = precis;
7081 break;
7082
7083 /* INTEGERS */
7084
fc36a67e 7085 case 'p':
c2e66d9e
GS		 7086 if (alt)
7087 goto unknown;
211dfcf1 7088 uv = PTR2UV(args ? va_arg(*args, void*) : argsv);
fc36a67e 7089 base = 16;
7090 goto integer;
7091
46fc3d4c 7092 case 'D':
29fe7a80 7093#ifdef IV_IS_QUAD
22f3ae8c 7094 intsize = 'q';
29fe7a80 7095#else
46fc3d4c 7096 intsize = 'l';
29fe7a80 7097#endif
46fc3d4c 7098 /* FALL THROUGH */
7099 case 'd':
7100 case 'i':
b22c7a20 7101 if (vectorize) {
ba210ebe 7102 STRLEN ulen;
211dfcf1
HS		 7103 if (!veclen)
7104 continue;
b2e23cf9 7105 if (vec_utf)
dcad2880 7106 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 7107 else {
a05b299f 7108 iv = *vecstr;
b22c7a20
GS		 7109 ulen = 1;
7110 }
7111 vecstr += ulen;
7112 veclen -= ulen;
7113 }
7114 else if (args) {
46fc3d4c 7115 switch (intsize) {
7116 case 'h': iv = (short)va_arg(*args, int); break;
7117 default: iv = va_arg(*args, int); break;
7118 case 'l': iv = va_arg(*args, long); break;
fc36a67e 7119 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 7120#ifdef HAS_QUAD
7121 case 'q': iv = va_arg(*args, Quad_t); break;
7122#endif
46fc3d4c 7123 }
7124 }
7125 else {
211dfcf1 7126 iv = SvIVx(argsv);
46fc3d4c 7127 switch (intsize) {
7128 case 'h': iv = (short)iv; break;
be28567c 7129 default: break;
46fc3d4c 7130 case 'l': iv = (long)iv; break;
fc36a67e 7131 case 'V': break;
cf2093f6
JH		 7132#ifdef HAS_QUAD
7133 case 'q': iv = (Quad_t)iv; break;
7134#endif
46fc3d4c 7135 }
7136 }
7137 if (iv >= 0) {
7138 uv = iv;
7139 if (plus)
7140 esignbuf[esignlen++] = plus;
7141 }
7142 else {
7143 uv = -iv;
7144 esignbuf[esignlen++] = '-';
7145 }
7146 base = 10;
7147 goto integer;
7148
fc36a67e 7149 case 'U':
29fe7a80 7150#ifdef IV_IS_QUAD
22f3ae8c 7151 intsize = 'q';
29fe7a80 7152#else
fc36a67e 7153 intsize = 'l';
29fe7a80 7154#endif
fc36a67e 7155 /* FALL THROUGH */
7156 case 'u':
7157 base = 10;
7158 goto uns_integer;
7159
4f19785b
WSI		 7160 case 'b':
7161 base = 2;
7162 goto uns_integer;
7163
46fc3d4c 7164 case 'O':
29fe7a80 7165#ifdef IV_IS_QUAD
22f3ae8c 7166 intsize = 'q';
29fe7a80 7167#else
46fc3d4c 7168 intsize = 'l';
29fe7a80 7169#endif
46fc3d4c 7170 /* FALL THROUGH */
7171 case 'o':
7172 base = 8;
7173 goto uns_integer;
7174
7175 case 'X':
46fc3d4c 7176 case 'x':
7177 base = 16;
46fc3d4c 7178
7179 uns_integer:
b22c7a20 7180 if (vectorize) {
ba210ebe 7181 STRLEN ulen;
b22c7a20 7182 vector:
211dfcf1
HS		 7183 if (!veclen)
7184 continue;
b2e23cf9 7185 if (vec_utf)
dcad2880 7186 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 7187 else {
a05b299f 7188 uv = *vecstr;
b22c7a20
GS		 7189 ulen = 1;
7190 }
7191 vecstr += ulen;
7192 veclen -= ulen;
7193 }
7194 else if (args) {
46fc3d4c 7195 switch (intsize) {
7196 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
7197 default: uv = va_arg(*args, unsigned); break;
7198 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 7199 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 7200#ifdef HAS_QUAD
7201 case 'q': uv = va_arg(*args, Quad_t); break;
7202#endif
46fc3d4c 7203 }
7204 }
7205 else {
211dfcf1 7206 uv = SvUVx(argsv);
46fc3d4c 7207 switch (intsize) {
7208 case 'h': uv = (unsigned short)uv; break;
be28567c 7209 default: break;
46fc3d4c 7210 case 'l': uv = (unsigned long)uv; break;
fc36a67e 7211 case 'V': break;
cf2093f6
JH		 7212#ifdef HAS_QUAD
7213 case 'q': uv = (Quad_t)uv; break;
7214#endif
46fc3d4c 7215 }
7216 }
7217
7218 integer:
46fc3d4c 7219 eptr = ebuf + sizeof ebuf;
fc36a67e 7220 switch (base) {
7221 unsigned dig;
7222 case 16:
c10ed8b9
HS		 7223 if (!uv)
7224 alt = FALSE;
1d7c1841
GS		 7225 p = (char*)((c == 'X')
7226 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 7227 do {
7228 dig = uv & 15;
7229 *--eptr = p[dig];
7230 } while (uv >>= 4);
7231 if (alt) {
46fc3d4c 7232 esignbuf[esignlen++] = '0';
fc36a67e 7233 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 7234 }
fc36a67e 7235 break;
7236 case 8:
7237 do {
7238 dig = uv & 7;
7239 *--eptr = '0' + dig;
7240 } while (uv >>= 3);
7241 if (alt && *eptr != '0')
7242 *--eptr = '0';
7243 break;
4f19785b
WSI		 7244 case 2:
7245 do {
7246 dig = uv & 1;
7247 *--eptr = '0' + dig;
7248 } while (uv >>= 1);
eda88b6d
JH		 7249 if (alt) {
7250 esignbuf[esignlen++] = '0';
7481bb52 7251 esignbuf[esignlen++] = 'b';
eda88b6d 7252 }
4f19785b 7253 break;
fc36a67e 7254 default: /* it had better be ten or less */
6bc102ca 7255#if defined(PERL_Y2KWARN)
e476b1b5 7256 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 7257 STRLEN n;
7258 char *s = SvPV(sv,n);
7259 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
7260 && (n == 2 || !isDIGIT(s[n-3])))
7261 {
e476b1b5 7262 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 7263 "Possible Y2K bug: %%%c %s",
7264 c, "format string following '19'");
7265 }
7266 }
7267#endif
fc36a67e 7268 do {
7269 dig = uv % base;
7270 *--eptr = '0' + dig;
7271 } while (uv /= base);
7272 break;
46fc3d4c 7273 }
7274 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 7275 if (has_precis) {
7276 if (precis > elen)
7277 zeros = precis - elen;
7278 else if (precis == 0 && elen == 1 && *eptr == '0')
7279 elen = 0;
7280 }
46fc3d4c 7281 break;
7282
7283 /* FLOATING POINT */
7284
fc36a67e 7285 case 'F':
7286 c = 'f'; /* maybe %F isn't supported here */
7287 /* FALL THROUGH */
46fc3d4c 7288 case 'e': case 'E':
fc36a67e 7289 case 'f':
46fc3d4c 7290 case 'g': case 'G':
7291
7292 /* This is evil, but floating point is even more evil */
7293
b22c7a20 7294 vectorize = FALSE;
211dfcf1 7295 nv = args ? va_arg(*args, NV) : SvNVx(argsv);
fc36a67e 7296
7297 need = 0;
7298 if (c != 'e' && c != 'E') {
7299 i = PERL_INT_MIN;
73b309ea 7300 (void)Perl_frexp(nv, &i);
fc36a67e 7301 if (i == PERL_INT_MIN)
cea2e8a9 7302 Perl_die(aTHX_ "panic: frexp");
c635e13b 7303 if (i > 0)
fc36a67e 7304 need = BIT_DIGITS(i);
7305 }
7306 need += has_precis ? precis : 6; /* known default */
7307 if (need < width)
7308 need = width;
7309
46fc3d4c 7310 need += 20; /* fudge factor */
80252599
GS		 7311 if (PL_efloatsize < need) {
7312 Safefree(PL_efloatbuf);
7313 PL_efloatsize = need + 20; /* more fudge */
7314 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 7315 PL_efloatbuf[0] = '\0';
46fc3d4c 7316 }
7317
7318 eptr = ebuf + sizeof ebuf;
7319 *--eptr = '\0';
7320 *--eptr = c;
e5c81feb 7321#if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
cf2093f6 7322 {
e5c81feb
JH		 7323 /* Copy the one or more characters in a long double
7324 * format before the 'base' ([efgEFG]) character to
7325 * the format string. */
7326 static char const prifldbl[] = PERL_PRIfldbl;
7327 char const *p = prifldbl + sizeof(prifldbl) - 3;
7328 while (p >= prifldbl) { *--eptr = *p--; }
cf2093f6 7329 }
65202027 7330#endif
46fc3d4c 7331 if (has_precis) {
7332 base = precis;
7333 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7334 *--eptr = '.';
7335 }
7336 if (width) {
7337 base = width;
7338 do { *--eptr = '0' + (base % 10); } while (base /= 10);
7339 }
7340 if (fill == '0')
7341 *--eptr = fill;
84902520
TB		 7342 if (left)
7343 *--eptr = '-';
46fc3d4c 7344 if (plus)
7345 *--eptr = plus;
7346 if (alt)
7347 *--eptr = '#';
7348 *--eptr = '%';
7349
ff9121f8
JH		 7350 /* No taint. Otherwise we are in the strange situation
7351 * where printf() taints but print($float) doesn't.
bda0f7a5 7352 * --jhi */
dd8482fc 7353 (void)sprintf(PL_efloatbuf, eptr, nv);
8af02333 7354
80252599
GS		 7355 eptr = PL_efloatbuf;
7356 elen = strlen(PL_efloatbuf);
46fc3d4c 7357 break;
7358
fc36a67e 7359 /* SPECIAL */
7360
7361 case 'n':
b22c7a20 7362 vectorize = FALSE;
fc36a67e 7363 i = SvCUR(sv) - origlen;
7364 if (args) {
c635e13b 7365 switch (intsize) {
7366 case 'h': *(va_arg(*args, short*)) = i; break;
7367 default: *(va_arg(*args, int*)) = i; break;
7368 case 'l': *(va_arg(*args, long*)) = i; break;
7369 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 7370#ifdef HAS_QUAD
7371 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
7372#endif
c635e13b 7373 }
fc36a67e 7374 }
9dd79c3f 7375 else
211dfcf1 7376 sv_setuv_mg(argsv, (UV)i);
fc36a67e 7377 continue; /* not "break" */
7378
7379 /* UNKNOWN */
7380
46fc3d4c 7381 default:
fc36a67e 7382 unknown:
b22c7a20 7383 vectorize = FALSE;
599cee73 7384 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 7385 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 7386 SV *msg = sv_newmortal();
cea2e8a9 7387 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 7388 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 7389 if (c) {
0f4b6630 7390 if (isPRINT(c))
1c846c1f 7391 Perl_sv_catpvf(aTHX_ msg,
0f4b6630
JH		 7392 "\"%%%c\"", c & 0xFF);
7393 else
7394 Perl_sv_catpvf(aTHX_ msg,
57def98f 7395 "\"%%\\%03"UVof"\"",
0f4b6630 7396 (UV)c & 0xFF);
0f4b6630 7397 } else
c635e13b 7398 sv_catpv(msg, "end of string");
894356b3 7399 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 7400 }
fb73857a 7401
7402 /* output mangled stuff ... */
7403 if (c == '\0')
7404 --q;
46fc3d4c 7405 eptr = p;
7406 elen = q - p;
fb73857a 7407
7408 /* ... right here, because formatting flags should not apply */
7409 SvGROW(sv, SvCUR(sv) + elen + 1);
7410 p = SvEND(sv);
4459522c 7411 Copy(eptr, p, elen, char);
fb73857a 7412 p += elen;
7413 *p = '\0';
7414 SvCUR(sv) = p - SvPVX(sv);
7415 continue; /* not "break" */
46fc3d4c 7416 }
7417
fc36a67e 7418 have = esignlen + zeros + elen;
46fc3d4c 7419 need = (have > width ? have : width);
7420 gap = need - have;
7421
b22c7a20 7422 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 7423 p = SvEND(sv);
7424 if (esignlen && fill == '0') {
7425 for (i = 0; i < esignlen; i++)
7426 *p++ = esignbuf[i];
7427 }
7428 if (gap && !left) {
7429 memset(p, fill, gap);
7430 p += gap;
7431 }
7432 if (esignlen && fill != '0') {
7433 for (i = 0; i < esignlen; i++)
7434 *p++ = esignbuf[i];
7435 }
fc36a67e 7436 if (zeros) {
7437 for (i = zeros; i; i--)
7438 *p++ = '0';
7439 }
46fc3d4c 7440 if (elen) {
4459522c 7441 Copy(eptr, p, elen, char);
46fc3d4c 7442 p += elen;
7443 }
7444 if (gap && left) {
7445 memset(p, ' ', gap);
7446 p += gap;
7447 }
b22c7a20
GS		 7448 if (vectorize) {
7449 if (veclen) {
4459522c 7450 Copy(dotstr, p, dotstrlen, char);
b22c7a20
GS		 7451 p += dotstrlen;
7452 }
7453 else
7454 vectorize = FALSE; /* done iterating over vecstr */
7455 }
7e2040f0
GS		 7456 if (is_utf)
7457 SvUTF8_on(sv);
46fc3d4c 7458 *p = '\0';
7459 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 7460 if (vectorize) {
7461 esignlen = 0;
7462 goto vector;
7463 }
46fc3d4c 7464 }
7465}
51371543 7466
1d7c1841
GS		 7467#if defined(USE_ITHREADS)
7468
7469#if defined(USE_THREADS)
7470# include "error: USE_THREADS and USE_ITHREADS are incompatible"
7471#endif
7472
1d7c1841
GS		 7473#ifndef GpREFCNT_inc
7474# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
7475#endif
7476
7477
7478#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
7479#define av_dup(s) (AV*)sv_dup((SV*)s)
7480#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
7481#define hv_dup(s) (HV*)sv_dup((SV*)s)
7482#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
7483#define cv_dup(s) (CV*)sv_dup((SV*)s)
7484#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
7485#define io_dup(s) (IO*)sv_dup((SV*)s)
7486#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
7487#define gv_dup(s) (GV*)sv_dup((SV*)s)
7488#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
7489#define SAVEPV(p) (p ? savepv(p) : Nullch)
7490#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
7491
7492REGEXP *
7493Perl_re_dup(pTHX_ REGEXP *r)
7494{
7495 /* XXX fix when pmop->op_pmregexp becomes shared */
7496 return ReREFCNT_inc(r);
7497}
7498
7499PerlIO *
7500Perl_fp_dup(pTHX_ PerlIO *fp, char type)
7501{
7502 PerlIO *ret;
7503 if (!fp)
7504 return (PerlIO*)NULL;
7505
7506 /* look for it in the table first */
7507 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
7508 if (ret)
7509 return ret;
7510
7511 /* create anew and remember what it is */
5f1a76d0 7512 ret = PerlIO_fdupopen(aTHX_ fp);
1d7c1841
GS		 7513 ptr_table_store(PL_ptr_table, fp, ret);
7514 return ret;
7515}
7516
7517DIR *
7518Perl_dirp_dup(pTHX_ DIR *dp)
7519{
7520 if (!dp)
7521 return (DIR*)NULL;
7522 /* XXX TODO */
7523 return dp;
7524}
7525
7526GP *
7527Perl_gp_dup(pTHX_ GP *gp)
7528{
7529 GP *ret;
7530 if (!gp)
7531 return (GP*)NULL;
7532 /* look for it in the table first */
7533 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
7534 if (ret)
7535 return ret;
7536
7537 /* create anew and remember what it is */
7538 Newz(0, ret, 1, GP);
7539 ptr_table_store(PL_ptr_table, gp, ret);
7540
7541 /* clone */
7542 ret->gp_refcnt = 0; /* must be before any other dups! */
7543 ret->gp_sv = sv_dup_inc(gp->gp_sv);
7544 ret->gp_io = io_dup_inc(gp->gp_io);
7545 ret->gp_form = cv_dup_inc(gp->gp_form);
7546 ret->gp_av = av_dup_inc(gp->gp_av);
7547 ret->gp_hv = hv_dup_inc(gp->gp_hv);
7548 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
7549 ret->gp_cv = cv_dup_inc(gp->gp_cv);
7550 ret->gp_cvgen = gp->gp_cvgen;
7551 ret->gp_flags = gp->gp_flags;
7552 ret->gp_line = gp->gp_line;
7553 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
7554 return ret;
7555}
7556
7557MAGIC *
7558Perl_mg_dup(pTHX_ MAGIC *mg)
7559{
7560 MAGIC *mgret = (MAGIC*)NULL;
7561 MAGIC *mgprev;
7562 if (!mg)
7563 return (MAGIC*)NULL;
7564 /* look for it in the table first */
7565 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
7566 if (mgret)
7567 return mgret;
7568
7569 for (; mg; mg = mg->mg_moremagic) {
7570 MAGIC *nmg;
7571 Newz(0, nmg, 1, MAGIC);
7572 if (!mgret)
7573 mgret = nmg;
7574 else
7575 mgprev->mg_moremagic = nmg;
7576 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
7577 nmg->mg_private = mg->mg_private;
7578 nmg->mg_type = mg->mg_type;
7579 nmg->mg_flags = mg->mg_flags;
7580 if (mg->mg_type == 'r') {
7581 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
7582 }
7583 else {
7584 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
7585 ? sv_dup_inc(mg->mg_obj)
7586 : sv_dup(mg->mg_obj);
7587 }
7588 nmg->mg_len = mg->mg_len;
7589 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
7590 if (mg->mg_ptr && mg->mg_type != 'g') {
7591 if (mg->mg_len >= 0) {
7592 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
7593 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
7594 AMT *amtp = (AMT*)mg->mg_ptr;
7595 AMT *namtp = (AMT*)nmg->mg_ptr;
7596 I32 i;
7597 for (i = 1; i < NofAMmeth; i++) {
7598 namtp->table[i] = cv_dup_inc(amtp->table[i]);
7599 }
7600 }
7601 }
7602 else if (mg->mg_len == HEf_SVKEY)
7603 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
7604 }
7605 mgprev = nmg;
7606 }
7607 return mgret;
7608}
7609
7610PTR_TBL_t *
7611Perl_ptr_table_new(pTHX)
7612{
7613 PTR_TBL_t *tbl;
7614 Newz(0, tbl, 1, PTR_TBL_t);
7615 tbl->tbl_max = 511;
7616 tbl->tbl_items = 0;
7617 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
7618 return tbl;
7619}
7620
7621void *
7622Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
7623{
7624 PTR_TBL_ENT_t *tblent;
d2a79402 7625 UV hash = PTR2UV(sv);
1d7c1841
GS		 7626 assert(tbl);
7627 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
7628 for (; tblent; tblent = tblent->next) {
7629 if (tblent->oldval == sv)
7630 return tblent->newval;
7631 }
7632 return (void*)NULL;
7633}
7634
7635void
7636Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
7637{
7638 PTR_TBL_ENT_t *tblent, **otblent;
7639 /* XXX this may be pessimal on platforms where pointers aren't good
7640 * hash values e.g. if they grow faster in the most significant
7641 * bits */
d2a79402 7642 UV hash = PTR2UV(oldv);
1d7c1841
GS		 7643 bool i = 1;
7644
7645 assert(tbl);
7646 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
7647 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
7648 if (tblent->oldval == oldv) {
7649 tblent->newval = newv;
7650 tbl->tbl_items++;
7651 return;
7652 }
7653 }
7654 Newz(0, tblent, 1, PTR_TBL_ENT_t);
7655 tblent->oldval = oldv;
7656 tblent->newval = newv;
7657 tblent->next = *otblent;
7658 *otblent = tblent;
7659 tbl->tbl_items++;
7660 if (i && tbl->tbl_items > tbl->tbl_max)
7661 ptr_table_split(tbl);
7662}
7663
7664void
7665Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
7666{
7667 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
7668 UV oldsize = tbl->tbl_max + 1;
7669 UV newsize = oldsize * 2;
7670 UV i;
7671
7672 Renew(ary, newsize, PTR_TBL_ENT_t*);
7673 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
7674 tbl->tbl_max = --newsize;
7675 tbl->tbl_ary = ary;
7676 for (i=0; i < oldsize; i++, ary++) {
7677 PTR_TBL_ENT_t **curentp, **entp, *ent;
7678 if (!*ary)
7679 continue;
7680 curentp = ary + oldsize;
7681 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 7682 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 7683 *entp = ent->next;
7684 ent->next = *curentp;
7685 *curentp = ent;
7686 continue;
7687 }
7688 else
7689 entp = &ent->next;
7690 }
7691 }
7692}
7693
7694#ifdef DEBUGGING
7695char *PL_watch_pvx;
7696#endif
7697
7698SV *
7699Perl_sv_dup(pTHX_ SV *sstr)
7700{
1d7c1841
GS		 7701 SV *dstr;
7702
7703 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
7704 return Nullsv;
7705 /* look for it in the table first */
7706 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
7707 if (dstr)
7708 return dstr;
7709
7710 /* create anew and remember what it is */
7711 new_SV(dstr);
7712 ptr_table_store(PL_ptr_table, sstr, dstr);
7713
7714 /* clone */
7715 SvFLAGS(dstr) = SvFLAGS(sstr);
7716 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
7717 SvREFCNT(dstr) = 0; /* must be before any other dups! */
7718
7719#ifdef DEBUGGING
7720 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
7721 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
7722 PL_watch_pvx, SvPVX(sstr));
7723#endif
7724
7725 switch (SvTYPE(sstr)) {
7726 case SVt_NULL:
7727 SvANY(dstr) = NULL;
7728 break;
7729 case SVt_IV:
7730 SvANY(dstr) = new_XIV();
7731 SvIVX(dstr) = SvIVX(sstr);
7732 break;
7733 case SVt_NV:
7734 SvANY(dstr) = new_XNV();
7735 SvNVX(dstr) = SvNVX(sstr);
7736 break;
7737 case SVt_RV:
7738 SvANY(dstr) = new_XRV();
7739 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7740 break;
7741 case SVt_PV:
7742 SvANY(dstr) = new_XPV();
7743 SvCUR(dstr) = SvCUR(sstr);
7744 SvLEN(dstr) = SvLEN(sstr);
7745 if (SvROK(sstr))
7746 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7747 else if (SvPVX(sstr) && SvLEN(sstr))
7748 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7749 else
7750 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7751 break;
7752 case SVt_PVIV:
7753 SvANY(dstr) = new_XPVIV();
7754 SvCUR(dstr) = SvCUR(sstr);
7755 SvLEN(dstr) = SvLEN(sstr);
7756 SvIVX(dstr) = SvIVX(sstr);
7757 if (SvROK(sstr))
7758 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7759 else if (SvPVX(sstr) && SvLEN(sstr))
7760 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7761 else
7762 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7763 break;
7764 case SVt_PVNV:
7765 SvANY(dstr) = new_XPVNV();
7766 SvCUR(dstr) = SvCUR(sstr);
7767 SvLEN(dstr) = SvLEN(sstr);
7768 SvIVX(dstr) = SvIVX(sstr);
7769 SvNVX(dstr) = SvNVX(sstr);
7770 if (SvROK(sstr))
7771 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7772 else if (SvPVX(sstr) && SvLEN(sstr))
7773 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7774 else
7775 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7776 break;
7777 case SVt_PVMG:
7778 SvANY(dstr) = new_XPVMG();
7779 SvCUR(dstr) = SvCUR(sstr);
7780 SvLEN(dstr) = SvLEN(sstr);
7781 SvIVX(dstr) = SvIVX(sstr);
7782 SvNVX(dstr) = SvNVX(sstr);
7783 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7784 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7785 if (SvROK(sstr))
7786 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7787 else if (SvPVX(sstr) && SvLEN(sstr))
7788 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7789 else
7790 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7791 break;
7792 case SVt_PVBM:
7793 SvANY(dstr) = new_XPVBM();
7794 SvCUR(dstr) = SvCUR(sstr);
7795 SvLEN(dstr) = SvLEN(sstr);
7796 SvIVX(dstr) = SvIVX(sstr);
7797 SvNVX(dstr) = SvNVX(sstr);
7798 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7799 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7800 if (SvROK(sstr))
7801 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7802 else if (SvPVX(sstr) && SvLEN(sstr))
7803 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7804 else
7805 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7806 BmRARE(dstr) = BmRARE(sstr);
7807 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7808 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7809 break;
7810 case SVt_PVLV:
7811 SvANY(dstr) = new_XPVLV();
7812 SvCUR(dstr) = SvCUR(sstr);
7813 SvLEN(dstr) = SvLEN(sstr);
7814 SvIVX(dstr) = SvIVX(sstr);
7815 SvNVX(dstr) = SvNVX(sstr);
7816 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7817 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7818 if (SvROK(sstr))
7819 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7820 else if (SvPVX(sstr) && SvLEN(sstr))
7821 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7822 else
7823 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7824 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7825 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7826 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7827 LvTYPE(dstr) = LvTYPE(sstr);
7828 break;
7829 case SVt_PVGV:
7830 SvANY(dstr) = new_XPVGV();
7831 SvCUR(dstr) = SvCUR(sstr);
7832 SvLEN(dstr) = SvLEN(sstr);
7833 SvIVX(dstr) = SvIVX(sstr);
7834 SvNVX(dstr) = SvNVX(sstr);
7835 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7836 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7837 if (SvROK(sstr))
7838 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7839 else if (SvPVX(sstr) && SvLEN(sstr))
7840 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7841 else
7842 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7843 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7844 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7845 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7846 GvFLAGS(dstr) = GvFLAGS(sstr);
7847 GvGP(dstr) = gp_dup(GvGP(sstr));
7848 (void)GpREFCNT_inc(GvGP(dstr));
7849 break;
7850 case SVt_PVIO:
7851 SvANY(dstr) = new_XPVIO();
7852 SvCUR(dstr) = SvCUR(sstr);
7853 SvLEN(dstr) = SvLEN(sstr);
7854 SvIVX(dstr) = SvIVX(sstr);
7855 SvNVX(dstr) = SvNVX(sstr);
7856 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7857 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7858 if (SvROK(sstr))
7859 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7860 else if (SvPVX(sstr) && SvLEN(sstr))
7861 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7862 else
7863 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7864 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7865 if (IoOFP(sstr) == IoIFP(sstr))
7866 IoOFP(dstr) = IoIFP(dstr);
7867 else
7868 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7869 /* PL_rsfp_filters entries have fake IoDIRP() */
7870 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7871 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7872 else
7873 IoDIRP(dstr) = IoDIRP(sstr);
7874 IoLINES(dstr) = IoLINES(sstr);
7875 IoPAGE(dstr) = IoPAGE(sstr);
7876 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7877 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7878 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7879 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7880 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7881 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7882 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7883 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7884 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7885 IoTYPE(dstr) = IoTYPE(sstr);
7886 IoFLAGS(dstr) = IoFLAGS(sstr);
7887 break;
7888 case SVt_PVAV:
7889 SvANY(dstr) = new_XPVAV();
7890 SvCUR(dstr) = SvCUR(sstr);
7891 SvLEN(dstr) = SvLEN(sstr);
7892 SvIVX(dstr) = SvIVX(sstr);
7893 SvNVX(dstr) = SvNVX(sstr);
7894 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7895 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7896 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7897 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7898 if (AvARRAY((AV*)sstr)) {
7899 SV **dst_ary, **src_ary;
7900 SSize_t items = AvFILLp((AV*)sstr) + 1;
7901
7902 src_ary = AvARRAY((AV*)sstr);
7903 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7904 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7905 SvPVX(dstr) = (char*)dst_ary;
7906 AvALLOC((AV*)dstr) = dst_ary;
7907 if (AvREAL((AV*)sstr)) {
7908 while (items-- > 0)
7909 *dst_ary++ = sv_dup_inc(*src_ary++);
7910 }
7911 else {
7912 while (items-- > 0)
7913 *dst_ary++ = sv_dup(*src_ary++);
7914 }
7915 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7916 while (items-- > 0) {
7917 *dst_ary++ = &PL_sv_undef;
7918 }
7919 }
7920 else {
7921 SvPVX(dstr) = Nullch;
7922 AvALLOC((AV*)dstr) = (SV**)NULL;
7923 }
7924 break;
7925 case SVt_PVHV:
7926 SvANY(dstr) = new_XPVHV();
7927 SvCUR(dstr) = SvCUR(sstr);
7928 SvLEN(dstr) = SvLEN(sstr);
7929 SvIVX(dstr) = SvIVX(sstr);
7930 SvNVX(dstr) = SvNVX(sstr);
7931 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7932 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7933 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7934 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7935 STRLEN i = 0;
7936 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7937 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7938 Newz(0, dxhv->xhv_array,
7939 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7940 while (i <= sxhv->xhv_max) {
7941 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7942 !!HvSHAREKEYS(sstr));
7943 ++i;
7944 }
7945 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7946 }
7947 else {
7948 SvPVX(dstr) = Nullch;
7949 HvEITER((HV*)dstr) = (HE*)NULL;
7950 }
7951 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7952 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7953 break;
7954 case SVt_PVFM:
7955 SvANY(dstr) = new_XPVFM();
7956 FmLINES(dstr) = FmLINES(sstr);
7957 goto dup_pvcv;
7958 /* NOTREACHED */
7959 case SVt_PVCV:
7960 SvANY(dstr) = new_XPVCV();
7961dup_pvcv:
7962 SvCUR(dstr) = SvCUR(sstr);
7963 SvLEN(dstr) = SvLEN(sstr);
7964 SvIVX(dstr) = SvIVX(sstr);
7965 SvNVX(dstr) = SvNVX(sstr);
7966 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7967 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7968 if (SvPVX(sstr) && SvLEN(sstr))
7969 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7970 else
7971 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7972 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7973 CvSTART(dstr) = CvSTART(sstr);
7974 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7975 CvXSUB(dstr) = CvXSUB(sstr);
7976 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7977 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7978 CvDEPTH(dstr) = CvDEPTH(sstr);
7979 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7980 /* XXX padlists are real, but pretend to be not */
7981 AvREAL_on(CvPADLIST(sstr));
7982 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7983 AvREAL_off(CvPADLIST(sstr));
7984 AvREAL_off(CvPADLIST(dstr));
7985 }
7986 else
7987 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7988 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7989 CvFLAGS(dstr) = CvFLAGS(sstr);
7990 break;
7991 default:
7992 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7993 break;
7994 }
7995
7996 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7997 ++PL_sv_objcount;
7998
7999 return dstr;
8000}
8001
8002PERL_CONTEXT *
8003Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
8004{
8005 PERL_CONTEXT *ncxs;
8006
8007 if (!cxs)
8008 return (PERL_CONTEXT*)NULL;
8009
8010 /* look for it in the table first */
8011 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
8012 if (ncxs)
8013 return ncxs;
8014
8015 /* create anew and remember what it is */
8016 Newz(56, ncxs, max + 1, PERL_CONTEXT);
8017 ptr_table_store(PL_ptr_table, cxs, ncxs);
8018
8019 while (ix >= 0) {
8020 PERL_CONTEXT *cx = &cxs[ix];
8021 PERL_CONTEXT *ncx = &ncxs[ix];
8022 ncx->cx_type = cx->cx_type;
8023 if (CxTYPE(cx) == CXt_SUBST) {
8024 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
8025 }
8026 else {
8027 ncx->blk_oldsp = cx->blk_oldsp;
8028 ncx->blk_oldcop = cx->blk_oldcop;
8029 ncx->blk_oldretsp = cx->blk_oldretsp;
8030 ncx->blk_oldmarksp = cx->blk_oldmarksp;
8031 ncx->blk_oldscopesp = cx->blk_oldscopesp;
8032 ncx->blk_oldpm = cx->blk_oldpm;
8033 ncx->blk_gimme = cx->blk_gimme;
8034 switch (CxTYPE(cx)) {
8035 case CXt_SUB:
8036 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
8037 ? cv_dup_inc(cx->blk_sub.cv)
8038 : cv_dup(cx->blk_sub.cv));
8039 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
8040 ? av_dup_inc(cx->blk_sub.argarray)
8041 : Nullav);
8042 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
8043 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
8044 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8045 ncx->blk_sub.lval = cx->blk_sub.lval;
8046 break;
8047 case CXt_EVAL:
8048 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
8049 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 8050 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 8051 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
8052 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
8053 break;
8054 case CXt_LOOP:
8055 ncx->blk_loop.label = cx->blk_loop.label;
8056 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
8057 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
8058 ncx->blk_loop.next_op = cx->blk_loop.next_op;
8059 ncx->blk_loop.last_op = cx->blk_loop.last_op;
8060 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
8061 ? cx->blk_loop.iterdata
8062 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 8063 ncx->blk_loop.oldcurpad
8064 = (SV**)ptr_table_fetch(PL_ptr_table,
8065 cx->blk_loop.oldcurpad);
1d7c1841
GS		 8066 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
8067 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
8068 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
8069 ncx->blk_loop.iterix = cx->blk_loop.iterix;
8070 ncx->blk_loop.itermax = cx->blk_loop.itermax;
8071 break;
8072 case CXt_FORMAT:
8073 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
8074 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
8075 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
8076 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
8077 break;
8078 case CXt_BLOCK:
8079 case CXt_NULL:
8080 break;
8081 }
8082 }
8083 --ix;
8084 }
8085 return ncxs;
8086}
8087
8088PERL_SI *
8089Perl_si_dup(pTHX_ PERL_SI *si)
8090{
8091 PERL_SI *nsi;
8092
8093 if (!si)
8094 return (PERL_SI*)NULL;
8095
8096 /* look for it in the table first */
8097 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
8098 if (nsi)
8099 return nsi;
8100
8101 /* create anew and remember what it is */
8102 Newz(56, nsi, 1, PERL_SI);
8103 ptr_table_store(PL_ptr_table, si, nsi);
8104
8105 nsi->si_stack = av_dup_inc(si->si_stack);
8106 nsi->si_cxix = si->si_cxix;
8107 nsi->si_cxmax = si->si_cxmax;
8108 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
8109 nsi->si_type = si->si_type;
8110 nsi->si_prev = si_dup(si->si_prev);
8111 nsi->si_next = si_dup(si->si_next);
8112 nsi->si_markoff = si->si_markoff;
8113
8114 return nsi;
8115}
8116
8117#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
8118#define TOPINT(ss,ix) ((ss)[ix].any_i32)
8119#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
8120#define TOPLONG(ss,ix) ((ss)[ix].any_long)
8121#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
8122#define TOPIV(ss,ix) ((ss)[ix].any_iv)
8123#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
8124#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
8125#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
8126#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
8127#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
8128#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
8129
8130/* XXXXX todo */
8131#define pv_dup_inc(p) SAVEPV(p)
8132#define pv_dup(p) SAVEPV(p)
8133#define svp_dup_inc(p,pp) any_dup(p,pp)
8134
8135void *
8136Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
8137{
8138 void *ret;
8139
8140 if (!v)
8141 return (void*)NULL;
8142
8143 /* look for it in the table first */
8144 ret = ptr_table_fetch(PL_ptr_table, v);
8145 if (ret)
8146 return ret;
8147
8148 /* see if it is part of the interpreter structure */
8149 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
8150 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
8151 else
8152 ret = v;
8153
8154 return ret;
8155}
8156
8157ANY *
8158Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
8159{
8160 ANY *ss = proto_perl->Tsavestack;
8161 I32 ix = proto_perl->Tsavestack_ix;
8162 I32 max = proto_perl->Tsavestack_max;
8163 ANY *nss;
8164 SV *sv;
8165 GV *gv;
8166 AV *av;
8167 HV *hv;
8168 void* ptr;
8169 int intval;
8170 long longval;
8171 GP *gp;
8172 IV iv;
8173 I32 i;
8174 char *c;
8175 void (*dptr) (void*);
8176 void (*dxptr) (pTHXo_ void*);
e977893f 8177 OP *o;
1d7c1841
GS		 8178
8179 Newz(54, nss, max, ANY);
8180
8181 while (ix > 0) {
8182 i = POPINT(ss,ix);
8183 TOPINT(nss,ix) = i;
8184 switch (i) {
8185 case SAVEt_ITEM: /* normal string */
8186 sv = (SV*)POPPTR(ss,ix);
8187 TOPPTR(nss,ix) = sv_dup_inc(sv);
8188 sv = (SV*)POPPTR(ss,ix);
8189 TOPPTR(nss,ix) = sv_dup_inc(sv);
8190 break;
8191 case SAVEt_SV: /* scalar reference */
8192 sv = (SV*)POPPTR(ss,ix);
8193 TOPPTR(nss,ix) = sv_dup_inc(sv);
8194 gv = (GV*)POPPTR(ss,ix);
8195 TOPPTR(nss,ix) = gv_dup_inc(gv);
8196 break;
f4dd75d9
GS		 8197 case SAVEt_GENERIC_PVREF: /* generic char* */
8198 c = (char*)POPPTR(ss,ix);
8199 TOPPTR(nss,ix) = pv_dup(c);
8200 ptr = POPPTR(ss,ix);
8201 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8202 break;
1d7c1841
GS		 8203 case SAVEt_GENERIC_SVREF: /* generic sv */
8204 case SAVEt_SVREF: /* scalar reference */
8205 sv = (SV*)POPPTR(ss,ix);
8206 TOPPTR(nss,ix) = sv_dup_inc(sv);
8207 ptr = POPPTR(ss,ix);
8208 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
8209 break;
8210 case SAVEt_AV: /* array reference */
8211 av = (AV*)POPPTR(ss,ix);
8212 TOPPTR(nss,ix) = av_dup_inc(av);
8213 gv = (GV*)POPPTR(ss,ix);
8214 TOPPTR(nss,ix) = gv_dup(gv);
8215 break;
8216 case SAVEt_HV: /* hash reference */
8217 hv = (HV*)POPPTR(ss,ix);
8218 TOPPTR(nss,ix) = hv_dup_inc(hv);
8219 gv = (GV*)POPPTR(ss,ix);
8220 TOPPTR(nss,ix) = gv_dup(gv);
8221 break;
8222 case SAVEt_INT: /* int reference */
8223 ptr = POPPTR(ss,ix);
8224 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8225 intval = (int)POPINT(ss,ix);
8226 TOPINT(nss,ix) = intval;
8227 break;
8228 case SAVEt_LONG: /* long reference */
8229 ptr = POPPTR(ss,ix);
8230 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8231 longval = (long)POPLONG(ss,ix);
8232 TOPLONG(nss,ix) = longval;
8233 break;
8234 case SAVEt_I32: /* I32 reference */
8235 case SAVEt_I16: /* I16 reference */
8236 case SAVEt_I8: /* I8 reference */
8237 ptr = POPPTR(ss,ix);
8238 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8239 i = POPINT(ss,ix);
8240 TOPINT(nss,ix) = i;
8241 break;
8242 case SAVEt_IV: /* IV reference */
8243 ptr = POPPTR(ss,ix);
8244 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8245 iv = POPIV(ss,ix);
8246 TOPIV(nss,ix) = iv;
8247 break;
8248 case SAVEt_SPTR: /* SV* reference */
8249 ptr = POPPTR(ss,ix);
8250 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8251 sv = (SV*)POPPTR(ss,ix);
8252 TOPPTR(nss,ix) = sv_dup(sv);
8253 break;
8254 case SAVEt_VPTR: /* random* reference */
8255 ptr = POPPTR(ss,ix);
8256 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8257 ptr = POPPTR(ss,ix);
8258 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8259 break;
8260 case SAVEt_PPTR: /* char* reference */
8261 ptr = POPPTR(ss,ix);
8262 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8263 c = (char*)POPPTR(ss,ix);
8264 TOPPTR(nss,ix) = pv_dup(c);
8265 break;
8266 case SAVEt_HPTR: /* HV* reference */
8267 ptr = POPPTR(ss,ix);
8268 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8269 hv = (HV*)POPPTR(ss,ix);
8270 TOPPTR(nss,ix) = hv_dup(hv);
8271 break;
8272 case SAVEt_APTR: /* AV* reference */
8273 ptr = POPPTR(ss,ix);
8274 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8275 av = (AV*)POPPTR(ss,ix);
8276 TOPPTR(nss,ix) = av_dup(av);
8277 break;
8278 case SAVEt_NSTAB:
8279 gv = (GV*)POPPTR(ss,ix);
8280 TOPPTR(nss,ix) = gv_dup(gv);
8281 break;
8282 case SAVEt_GP: /* scalar reference */
8283 gp = (GP*)POPPTR(ss,ix);
8284 TOPPTR(nss,ix) = gp = gp_dup(gp);
8285 (void)GpREFCNT_inc(gp);
8286 gv = (GV*)POPPTR(ss,ix);
8287 TOPPTR(nss,ix) = gv_dup_inc(c);
8288 c = (char*)POPPTR(ss,ix);
8289 TOPPTR(nss,ix) = pv_dup(c);
8290 iv = POPIV(ss,ix);
8291 TOPIV(nss,ix) = iv;
8292 iv = POPIV(ss,ix);
8293 TOPIV(nss,ix) = iv;
8294 break;
8295 case SAVEt_FREESV:
8296 sv = (SV*)POPPTR(ss,ix);
8297 TOPPTR(nss,ix) = sv_dup_inc(sv);
8298 break;
8299 case SAVEt_FREEOP:
8300 ptr = POPPTR(ss,ix);
8301 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
8302 /* these are assumed to be refcounted properly */
8303 switch (((OP*)ptr)->op_type) {
8304 case OP_LEAVESUB:
8305 case OP_LEAVESUBLV:
8306 case OP_LEAVEEVAL:
8307 case OP_LEAVE:
8308 case OP_SCOPE:
8309 case OP_LEAVEWRITE:
e977893f
GS		 8310 TOPPTR(nss,ix) = ptr;
8311 o = (OP*)ptr;
8312 OpREFCNT_inc(o);
1d7c1841
GS		 8313 break;
8314 default:
8315 TOPPTR(nss,ix) = Nullop;
8316 break;
8317 }
8318 }
8319 else
8320 TOPPTR(nss,ix) = Nullop;
8321 break;
8322 case SAVEt_FREEPV:
8323 c = (char*)POPPTR(ss,ix);
8324 TOPPTR(nss,ix) = pv_dup_inc(c);
8325 break;
8326 case SAVEt_CLEARSV:
8327 longval = POPLONG(ss,ix);
8328 TOPLONG(nss,ix) = longval;
8329 break;
8330 case SAVEt_DELETE:
8331 hv = (HV*)POPPTR(ss,ix);
8332 TOPPTR(nss,ix) = hv_dup_inc(hv);
8333 c = (char*)POPPTR(ss,ix);
8334 TOPPTR(nss,ix) = pv_dup_inc(c);
8335 i = POPINT(ss,ix);
8336 TOPINT(nss,ix) = i;
8337 break;
8338 case SAVEt_DESTRUCTOR:
8339 ptr = POPPTR(ss,ix);
8340 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8341 dptr = POPDPTR(ss,ix);
ef75a179 8342 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 8343 break;
8344 case SAVEt_DESTRUCTOR_X:
8345 ptr = POPPTR(ss,ix);
8346 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
8347 dxptr = POPDXPTR(ss,ix);
ef75a179 8348 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 8349 break;
8350 case SAVEt_REGCONTEXT:
8351 case SAVEt_ALLOC:
8352 i = POPINT(ss,ix);
8353 TOPINT(nss,ix) = i;
8354 ix -= i;
8355 break;
8356 case SAVEt_STACK_POS: /* Position on Perl stack */
8357 i = POPINT(ss,ix);
8358 TOPINT(nss,ix) = i;
8359 break;
8360 case SAVEt_AELEM: /* array element */
8361 sv = (SV*)POPPTR(ss,ix);
8362 TOPPTR(nss,ix) = sv_dup_inc(sv);
8363 i = POPINT(ss,ix);
8364 TOPINT(nss,ix) = i;
8365 av = (AV*)POPPTR(ss,ix);
8366 TOPPTR(nss,ix) = av_dup_inc(av);
8367 break;
8368 case SAVEt_HELEM: /* hash element */
8369 sv = (SV*)POPPTR(ss,ix);
8370 TOPPTR(nss,ix) = sv_dup_inc(sv);
8371 sv = (SV*)POPPTR(ss,ix);
8372 TOPPTR(nss,ix) = sv_dup_inc(sv);
8373 hv = (HV*)POPPTR(ss,ix);
8374 TOPPTR(nss,ix) = hv_dup_inc(hv);
8375 break;
8376 case SAVEt_OP:
8377 ptr = POPPTR(ss,ix);
8378 TOPPTR(nss,ix) = ptr;
8379 break;
8380 case SAVEt_HINTS:
8381 i = POPINT(ss,ix);
8382 TOPINT(nss,ix) = i;
8383 break;
c4410b1b
GS		 8384 case SAVEt_COMPPAD:
8385 av = (AV*)POPPTR(ss,ix);
8386 TOPPTR(nss,ix) = av_dup(av);
8387 break;
c3564e5c
GS		 8388 case SAVEt_PADSV:
8389 longval = (long)POPLONG(ss,ix);
8390 TOPLONG(nss,ix) = longval;
8391 ptr = POPPTR(ss,ix);
8392 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
8393 sv = (SV*)POPPTR(ss,ix);
8394 TOPPTR(nss,ix) = sv_dup(sv);
8395 break;
1d7c1841
GS		 8396 default:
8397 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
8398 }
8399 }
8400
8401 return nss;
8402}
8403
8404#ifdef PERL_OBJECT
8405#include "XSUB.h"
8406#endif
8407
8408PerlInterpreter *
8409perl_clone(PerlInterpreter *proto_perl, UV flags)
8410{
8411#ifdef PERL_OBJECT
8412 CPerlObj *pPerl = (CPerlObj*)proto_perl;
8413#endif
8414
8415#ifdef PERL_IMPLICIT_SYS
8416 return perl_clone_using(proto_perl, flags,
8417 proto_perl->IMem,
8418 proto_perl->IMemShared,
8419 proto_perl->IMemParse,
8420 proto_perl->IEnv,
8421 proto_perl->IStdIO,
8422 proto_perl->ILIO,
8423 proto_perl->IDir,
8424 proto_perl->ISock,
8425 proto_perl->IProc);
8426}
8427
8428PerlInterpreter *
8429perl_clone_using(PerlInterpreter *proto_perl, UV flags,
8430 struct IPerlMem* ipM, struct IPerlMem* ipMS,
8431 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
8432 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
8433 struct IPerlDir* ipD, struct IPerlSock* ipS,
8434 struct IPerlProc* ipP)
8435{
8436 /* XXX many of the string copies here can be optimized if they're
8437 * constants; they need to be allocated as common memory and just
8438 * their pointers copied. */
8439
8440 IV i;
1d7c1841
GS		 8441# ifdef PERL_OBJECT
8442 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
8443 ipD, ipS, ipP);
ba869deb 8444 PERL_SET_THX(pPerl);
1d7c1841
GS		 8445# else /* !PERL_OBJECT */
8446 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 8447 PERL_SET_THX(my_perl);
1d7c1841
GS		 8448
8449# ifdef DEBUGGING
8450 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8451 PL_markstack = 0;
8452 PL_scopestack = 0;
8453 PL_savestack = 0;
8454 PL_retstack = 0;
66fe0623 8455 PL_sig_pending = 0;
1d7c1841
GS		 8456# else /* !DEBUGGING */
8457 Zero(my_perl, 1, PerlInterpreter);
8458# endif /* DEBUGGING */
8459
8460 /* host pointers */
8461 PL_Mem = ipM;
8462 PL_MemShared = ipMS;
8463 PL_MemParse = ipMP;
8464 PL_Env = ipE;
8465 PL_StdIO = ipStd;
8466 PL_LIO = ipLIO;
8467 PL_Dir = ipD;
8468 PL_Sock = ipS;
8469 PL_Proc = ipP;
8470# endif /* PERL_OBJECT */
8471#else /* !PERL_IMPLICIT_SYS */
8472 IV i;
1d7c1841 8473 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 8474 PERL_SET_THX(my_perl);
1d7c1841
GS		 8475
8476# ifdef DEBUGGING
8477 memset(my_perl, 0xab, sizeof(PerlInterpreter));
8478 PL_markstack = 0;
8479 PL_scopestack = 0;
8480 PL_savestack = 0;
8481 PL_retstack = 0;
66fe0623 8482 PL_sig_pending = 0;
1d7c1841
GS		 8483# else /* !DEBUGGING */
8484 Zero(my_perl, 1, PerlInterpreter);
8485# endif /* DEBUGGING */
8486#endif /* PERL_IMPLICIT_SYS */
8487
8488 /* arena roots */
8489 PL_xiv_arenaroot = NULL;
8490 PL_xiv_root = NULL;
612f20c3 8491 PL_xnv_arenaroot = NULL;
1d7c1841 8492 PL_xnv_root = NULL;
612f20c3 8493 PL_xrv_arenaroot = NULL;
1d7c1841 8494 PL_xrv_root = NULL;
612f20c3 8495 PL_xpv_arenaroot = NULL;
1d7c1841 8496 PL_xpv_root = NULL;
612f20c3 8497 PL_xpviv_arenaroot = NULL;
1d7c1841 8498 PL_xpviv_root = NULL;
612f20c3 8499 PL_xpvnv_arenaroot = NULL;
1d7c1841 8500 PL_xpvnv_root = NULL;
612f20c3 8501 PL_xpvcv_arenaroot = NULL;
1d7c1841 8502 PL_xpvcv_root = NULL;
612f20c3 8503 PL_xpvav_arenaroot = NULL;
1d7c1841 8504 PL_xpvav_root = NULL;
612f20c3 8505 PL_xpvhv_arenaroot = NULL;
1d7c1841 8506 PL_xpvhv_root = NULL;
612f20c3 8507 PL_xpvmg_arenaroot = NULL;
1d7c1841 8508 PL_xpvmg_root = NULL;
612f20c3 8509 PL_xpvlv_arenaroot = NULL;
1d7c1841 8510 PL_xpvlv_root = NULL;
612f20c3 8511 PL_xpvbm_arenaroot = NULL;
1d7c1841 8512 PL_xpvbm_root = NULL;
612f20c3 8513 PL_he_arenaroot = NULL;
1d7c1841
GS		 8514 PL_he_root = NULL;
8515 PL_nice_chunk = NULL;
8516 PL_nice_chunk_size = 0;
8517 PL_sv_count = 0;
8518 PL_sv_objcount = 0;
8519 PL_sv_root = Nullsv;
8520 PL_sv_arenaroot = Nullsv;
8521
8522 PL_debug = proto_perl->Idebug;
8523
8524 /* create SV map for pointer relocation */
8525 PL_ptr_table = ptr_table_new();
8526
8527 /* initialize these special pointers as early as possible */
8528 SvANY(&PL_sv_undef) = NULL;
8529 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
8530 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
8531 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
8532
8533#ifdef PERL_OBJECT
8534 SvUPGRADE(&PL_sv_no, SVt_PVNV);
8535#else
8536 SvANY(&PL_sv_no) = new_XPVNV();
8537#endif
8538 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
8539 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8540 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
8541 SvCUR(&PL_sv_no) = 0;
8542 SvLEN(&PL_sv_no) = 1;
8543 SvNVX(&PL_sv_no) = 0;
8544 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
8545
8546#ifdef PERL_OBJECT
8547 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
8548#else
8549 SvANY(&PL_sv_yes) = new_XPVNV();
8550#endif
8551 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
8552 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
8553 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
8554 SvCUR(&PL_sv_yes) = 1;
8555 SvLEN(&PL_sv_yes) = 2;
8556 SvNVX(&PL_sv_yes) = 1;
8557 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
8558
8559 /* create shared string table */
8560 PL_strtab = newHV();
8561 HvSHAREKEYS_off(PL_strtab);
8562 hv_ksplit(PL_strtab, 512);
8563 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
8564
8565 PL_compiling = proto_perl->Icompiling;
8566 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
8567 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
8568 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
8569 if (!specialWARN(PL_compiling.cop_warnings))
8570 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
ac27b0f5
NIS		 8571 if (!specialCopIO(PL_compiling.cop_io))
8572 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
1d7c1841
GS		 8573 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
8574
8575 /* pseudo environmental stuff */
8576 PL_origargc = proto_perl->Iorigargc;
8577 i = PL_origargc;
8578 New(0, PL_origargv, i+1, char*);
8579 PL_origargv[i] = '\0';
8580 while (i-- > 0) {
8581 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
8582 }
8583 PL_envgv = gv_dup(proto_perl->Ienvgv);
8584 PL_incgv = gv_dup(proto_perl->Iincgv);
8585 PL_hintgv = gv_dup(proto_perl->Ihintgv);
8586 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
8587 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
8588 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
8589
8590 /* switches */
8591 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 8592 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 8593 PL_localpatches = proto_perl->Ilocalpatches;
8594 PL_splitstr = proto_perl->Isplitstr;
8595 PL_preprocess = proto_perl->Ipreprocess;
8596 PL_minus_n = proto_perl->Iminus_n;
8597 PL_minus_p = proto_perl->Iminus_p;
8598 PL_minus_l = proto_perl->Iminus_l;
8599 PL_minus_a = proto_perl->Iminus_a;
8600 PL_minus_F = proto_perl->Iminus_F;
8601 PL_doswitches = proto_perl->Idoswitches;
8602 PL_dowarn = proto_perl->Idowarn;
8603 PL_doextract = proto_perl->Idoextract;
8604 PL_sawampersand = proto_perl->Isawampersand;
8605 PL_unsafe = proto_perl->Iunsafe;
8606 PL_inplace = SAVEPV(proto_perl->Iinplace);
8607 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
8608 PL_perldb = proto_perl->Iperldb;
8609 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
8610
8611 /* magical thingies */
8612 /* XXX time(&PL_basetime) when asked for? */
8613 PL_basetime = proto_perl->Ibasetime;
8614 PL_formfeed = sv_dup(proto_perl->Iformfeed);
8615
8616 PL_maxsysfd = proto_perl->Imaxsysfd;
8617 PL_multiline = proto_perl->Imultiline;
8618 PL_statusvalue = proto_perl->Istatusvalue;
8619#ifdef VMS
8620 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
8621#endif
8622
8623 /* shortcuts to various I/O objects */
8624 PL_stdingv = gv_dup(proto_perl->Istdingv);
8625 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
8626 PL_defgv = gv_dup(proto_perl->Idefgv);
8627 PL_argvgv = gv_dup(proto_perl->Iargvgv);
8628 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
8629 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
8630
8631 /* shortcuts to regexp stuff */
8632 PL_replgv = gv_dup(proto_perl->Ireplgv);
8633
8634 /* shortcuts to misc objects */
8635 PL_errgv = gv_dup(proto_perl->Ierrgv);
8636
8637 /* shortcuts to debugging objects */
8638 PL_DBgv = gv_dup(proto_perl->IDBgv);
8639 PL_DBline = gv_dup(proto_perl->IDBline);
8640 PL_DBsub = gv_dup(proto_perl->IDBsub);
8641 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
8642 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
8643 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
8644 PL_lineary = av_dup(proto_perl->Ilineary);
8645 PL_dbargs = av_dup(proto_perl->Idbargs);
8646
8647 /* symbol tables */
8648 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
8649 PL_curstash = hv_dup(proto_perl->Tcurstash);
8650 PL_debstash = hv_dup(proto_perl->Idebstash);
8651 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
8652 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
8653
8654 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
8655 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 8656 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 8657 PL_initav = av_dup_inc(proto_perl->Iinitav);
8658
8659 PL_sub_generation = proto_perl->Isub_generation;
8660
8661 /* funky return mechanisms */
8662 PL_forkprocess = proto_perl->Iforkprocess;
8663
8664 /* subprocess state */
8665 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
8666
8667 /* internal state */
8668 PL_tainting = proto_perl->Itainting;
8669 PL_maxo = proto_perl->Imaxo;
8670 if (proto_perl->Iop_mask)
8671 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
8672 else
8673 PL_op_mask = Nullch;
8674
8675 /* current interpreter roots */
8676 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
8677 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
8678 PL_main_start = proto_perl->Imain_start;
e977893f 8679 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 8680 PL_eval_start = proto_perl->Ieval_start;
8681
8682 /* runtime control stuff */
8683 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
8684 PL_copline = proto_perl->Icopline;
8685
8686 PL_filemode = proto_perl->Ifilemode;
8687 PL_lastfd = proto_perl->Ilastfd;
8688 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
8689 PL_Argv = NULL;
8690 PL_Cmd = Nullch;
8691 PL_gensym = proto_perl->Igensym;
8692 PL_preambled = proto_perl->Ipreambled;
8693 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
8694 PL_laststatval = proto_perl->Ilaststatval;
8695 PL_laststype = proto_perl->Ilaststype;
8696 PL_mess_sv = Nullsv;
8697
7889fe52 8698 PL_ors_sv = sv_dup_inc(proto_perl->Iors_sv);
1d7c1841
GS		 8699 PL_ofmt = SAVEPV(proto_perl->Iofmt);
8700
8701 /* interpreter atexit processing */
8702 PL_exitlistlen = proto_perl->Iexitlistlen;
8703 if (PL_exitlistlen) {
8704 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8705 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
8706 }
8707 else
8708 PL_exitlist = (PerlExitListEntry*)NULL;
8709 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
8710
8711 PL_profiledata = NULL;
8712 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
8713 /* PL_rsfp_filters entries have fake IoDIRP() */
8714 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
8715
8716 PL_compcv = cv_dup(proto_perl->Icompcv);
8717 PL_comppad = av_dup(proto_perl->Icomppad);
8718 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
8719 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
8720 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
8721 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
8722 proto_perl->Tcurpad);
8723
8724#ifdef HAVE_INTERP_INTERN
8725 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8726#endif
8727
8728 /* more statics moved here */
8729 PL_generation = proto_perl->Igeneration;
8730 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 8731
8732 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8733 PL_in_clean_all = proto_perl->Iin_clean_all;
8734
8735 PL_uid = proto_perl->Iuid;
8736 PL_euid = proto_perl->Ieuid;
8737 PL_gid = proto_perl->Igid;
8738 PL_egid = proto_perl->Iegid;
8739 PL_nomemok = proto_perl->Inomemok;
8740 PL_an = proto_perl->Ian;
8741 PL_cop_seqmax = proto_perl->Icop_seqmax;
8742 PL_op_seqmax = proto_perl->Iop_seqmax;
8743 PL_evalseq = proto_perl->Ievalseq;
8744 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8745 PL_origalen = proto_perl->Iorigalen;
8746 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8747 PL_osname = SAVEPV(proto_perl->Iosname);
8748 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8749 PL_sighandlerp = proto_perl->Isighandlerp;
8750
8751
8752 PL_runops = proto_perl->Irunops;
8753
8754 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8755
8756#ifdef CSH
8757 PL_cshlen = proto_perl->Icshlen;
8758 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8759#endif
8760
8761 PL_lex_state = proto_perl->Ilex_state;
8762 PL_lex_defer = proto_perl->Ilex_defer;
8763 PL_lex_expect = proto_perl->Ilex_expect;
8764 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8765 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8766 PL_lex_starts = proto_perl->Ilex_starts;
8767 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8768 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8769 PL_lex_op = proto_perl->Ilex_op;
8770 PL_lex_inpat = proto_perl->Ilex_inpat;
8771 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8772 PL_lex_brackets = proto_perl->Ilex_brackets;
8773 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8774 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8775 PL_lex_casemods = proto_perl->Ilex_casemods;
8776 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8777 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8778
8779 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8780 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8781 PL_nexttoke = proto_perl->Inexttoke;
8782
8783 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8784 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8785 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8786 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8787 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8788 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8789 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8790 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8791 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8792 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8793 PL_pending_ident = proto_perl->Ipending_ident;
8794 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8795
8796 PL_expect = proto_perl->Iexpect;
8797
8798 PL_multi_start = proto_perl->Imulti_start;
8799 PL_multi_end = proto_perl->Imulti_end;
8800 PL_multi_open = proto_perl->Imulti_open;
8801 PL_multi_close = proto_perl->Imulti_close;
8802
8803 PL_error_count = proto_perl->Ierror_count;
8804 PL_subline = proto_perl->Isubline;
8805 PL_subname = sv_dup_inc(proto_perl->Isubname);
8806
8807 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8808 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8809 PL_padix = proto_perl->Ipadix;
8810 PL_padix_floor = proto_perl->Ipadix_floor;
8811 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8812
8813 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8814 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8815 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8816 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8817 PL_last_lop_op = proto_perl->Ilast_lop_op;
8818 PL_in_my = proto_perl->Iin_my;
8819 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8820#ifdef FCRYPT
8821 PL_cryptseen = proto_perl->Icryptseen;
8822#endif
8823
8824 PL_hints = proto_perl->Ihints;
8825
8826 PL_amagic_generation = proto_perl->Iamagic_generation;
8827
8828#ifdef USE_LOCALE_COLLATE
8829 PL_collation_ix = proto_perl->Icollation_ix;
8830 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8831 PL_collation_standard = proto_perl->Icollation_standard;
8832 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8833 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8834#endif /* USE_LOCALE_COLLATE */
8835
8836#ifdef USE_LOCALE_NUMERIC
8837 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8838 PL_numeric_standard = proto_perl->Inumeric_standard;
8839 PL_numeric_local = proto_perl->Inumeric_local;
8840 PL_numeric_radix = proto_perl->Inumeric_radix;
8841#endif /* !USE_LOCALE_NUMERIC */
8842
8843 /* utf8 character classes */
8844 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8845 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8846 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8847 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8848 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8849 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8850 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8851 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8852 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8853 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8854 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8855 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8856 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8857 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8858 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8859 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8860 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8861
8862 /* swatch cache */
8863 PL_last_swash_hv = Nullhv; /* reinits on demand */
8864 PL_last_swash_klen = 0;
8865 PL_last_swash_key[0]= '\0';
8866 PL_last_swash_tmps = (U8*)NULL;
8867 PL_last_swash_slen = 0;
8868
8869 /* perly.c globals */
8870 PL_yydebug = proto_perl->Iyydebug;
8871 PL_yynerrs = proto_perl->Iyynerrs;
8872 PL_yyerrflag = proto_perl->Iyyerrflag;
8873 PL_yychar = proto_perl->Iyychar;
8874 PL_yyval = proto_perl->Iyyval;
8875 PL_yylval = proto_perl->Iyylval;
8876
8877 PL_glob_index = proto_perl->Iglob_index;
8878 PL_srand_called = proto_perl->Isrand_called;
8879 PL_uudmap['M'] = 0; /* reinits on demand */
8880 PL_bitcount = Nullch; /* reinits on demand */
8881
66fe0623
NIS		 8882 if (proto_perl->Ipsig_pend) {
8883 Newz(0, PL_psig_pend, SIG_SIZE, int);
9dd79c3f 8884 }
66fe0623
NIS		 8885 else {
8886 PL_psig_pend = (int*)NULL;
8887 }
8888
1d7c1841 8889 if (proto_perl->Ipsig_ptr) {
76d3c696
JH		 8890 Newz(0, PL_psig_ptr, SIG_SIZE, SV*);
8891 Newz(0, PL_psig_name, SIG_SIZE, SV*);
76d3c696
JH		 8892 for (i = 1; i < SIG_SIZE; i++) {
8893 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
1d7c1841
GS		 8894 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8895 }
8896 }
8897 else {
8898 PL_psig_ptr = (SV**)NULL;
8899 PL_psig_name = (SV**)NULL;
8900 }
8901
8902 /* thrdvar.h stuff */
8903
8904 if (flags & 1) {
8905 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8906 PL_tmps_ix = proto_perl->Ttmps_ix;
8907 PL_tmps_max = proto_perl->Ttmps_max;
8908 PL_tmps_floor = proto_perl->Ttmps_floor;
8909 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8910 i = 0;
8911 while (i <= PL_tmps_ix) {
8912 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8913 ++i;
8914 }
8915
8916 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8917 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8918 Newz(54, PL_markstack, i, I32);
8919 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8920 - proto_perl->Tmarkstack);
8921 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8922 - proto_perl->Tmarkstack);
8923 Copy(proto_perl->Tmarkstack, PL_markstack,
8924 PL_markstack_ptr - PL_markstack + 1, I32);
8925
8926 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8927 * NOTE: unlike the others! */
8928 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8929 PL_scopestack_max = proto_perl->Tscopestack_max;
8930 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8931 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8932
8933 /* next push_return() sets PL_retstack[PL_retstack_ix]
8934 * NOTE: unlike the others! */
8935 PL_retstack_ix = proto_perl->Tretstack_ix;
8936 PL_retstack_max = proto_perl->Tretstack_max;
8937 Newz(54, PL_retstack, PL_retstack_max, OP*);
8938 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8939
8940 /* NOTE: si_dup() looks at PL_markstack */
8941 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8942
8943 /* PL_curstack = PL_curstackinfo->si_stack; */
8944 PL_curstack = av_dup(proto_perl->Tcurstack);
8945 PL_mainstack = av_dup(proto_perl->Tmainstack);
8946
8947 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8948 PL_stack_base = AvARRAY(PL_curstack);
8949 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8950 - proto_perl->Tstack_base);
8951 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8952
8953 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8954 * NOTE: unlike the others! */
8955 PL_savestack_ix = proto_perl->Tsavestack_ix;
8956 PL_savestack_max = proto_perl->Tsavestack_max;
8957 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8958 PL_savestack = ss_dup(proto_perl);
8959 }
8960 else {
8961 init_stacks();
985e7056 8962 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8963 }
8964
8965 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8966 PL_top_env = &PL_start_env;
8967
8968 PL_op = proto_perl->Top;
8969
8970 PL_Sv = Nullsv;
8971 PL_Xpv = (XPV*)NULL;
8972 PL_na = proto_perl->Tna;
8973
8974 PL_statbuf = proto_perl->Tstatbuf;
8975 PL_statcache = proto_perl->Tstatcache;
8976 PL_statgv = gv_dup(proto_perl->Tstatgv);
8977 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8978#ifdef HAS_TIMES
8979 PL_timesbuf = proto_perl->Ttimesbuf;
8980#endif
8981
8982 PL_tainted = proto_perl->Ttainted;
8983 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8984 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8985 PL_rs = sv_dup_inc(proto_perl->Trs);
8986 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
7889fe52 8987 PL_ofs_sv = sv_dup_inc(proto_perl->Tofs_sv);
1d7c1841
GS		 8988 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8989 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8990 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8991 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8992 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8993
8994 PL_restartop = proto_perl->Trestartop;
8995 PL_in_eval = proto_perl->Tin_eval;
8996 PL_delaymagic = proto_perl->Tdelaymagic;
8997 PL_dirty = proto_perl->Tdirty;
8998 PL_localizing = proto_perl->Tlocalizing;
8999
14dd3ad8 9000#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 9001 PL_protect = proto_perl->Tprotect;
14dd3ad8 9002#endif
1d7c1841
GS		 9003 PL_errors = sv_dup_inc(proto_perl->Terrors);
9004 PL_av_fetch_sv = Nullsv;
9005 PL_hv_fetch_sv = Nullsv;
9006 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
9007 PL_modcount = proto_perl->Tmodcount;
9008 PL_lastgotoprobe = Nullop;
9009 PL_dumpindent = proto_perl->Tdumpindent;
9010
9011 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
9012 PL_sortstash = hv_dup(proto_perl->Tsortstash);
9013 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
9014 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
9015 PL_sortcxix = proto_perl->Tsortcxix;
9016 PL_efloatbuf = Nullch; /* reinits on demand */
9017 PL_efloatsize = 0; /* reinits on demand */
9018
9019 /* regex stuff */
9020
9021 PL_screamfirst = NULL;
9022 PL_screamnext = NULL;
9023 PL_maxscream = -1; /* reinits on demand */
9024 PL_lastscream = Nullsv;
9025
9026 PL_watchaddr = NULL;
9027 PL_watchok = Nullch;
9028
9029 PL_regdummy = proto_perl->Tregdummy;
9030 PL_regcomp_parse = Nullch;
9031 PL_regxend = Nullch;
9032 PL_regcode = (regnode*)NULL;
9033 PL_regnaughty = 0;
9034 PL_regsawback = 0;
9035 PL_regprecomp = Nullch;
9036 PL_regnpar = 0;
9037 PL_regsize = 0;
9038 PL_regflags = 0;
9039 PL_regseen = 0;
9040 PL_seen_zerolen = 0;
9041 PL_seen_evals = 0;
9042 PL_regcomp_rx = (regexp*)NULL;
9043 PL_extralen = 0;
9044 PL_colorset = 0; /* reinits PL_colors[] */
9045 /*PL_colors[6] = {0,0,0,0,0,0};*/
9046 PL_reg_whilem_seen = 0;
9047 PL_reginput = Nullch;
9048 PL_regbol = Nullch;
9049 PL_regeol = Nullch;
9050 PL_regstartp = (I32*)NULL;
9051 PL_regendp = (I32*)NULL;
9052 PL_reglastparen = (U32*)NULL;
9053 PL_regtill = Nullch;
9054 PL_regprev = '\n';
9055 PL_reg_start_tmp = (char**)NULL;
9056 PL_reg_start_tmpl = 0;
9057 PL_regdata = (struct reg_data*)NULL;
9058 PL_bostr = Nullch;
9059 PL_reg_flags = 0;
9060 PL_reg_eval_set = 0;
9061 PL_regnarrate = 0;
9062 PL_regprogram = (regnode*)NULL;
9063 PL_regindent = 0;
9064 PL_regcc = (CURCUR*)NULL;
9065 PL_reg_call_cc = (struct re_cc_state*)NULL;
9066 PL_reg_re = (regexp*)NULL;
9067 PL_reg_ganch = Nullch;
9068 PL_reg_sv = Nullsv;
9069 PL_reg_magic = (MAGIC*)NULL;
9070 PL_reg_oldpos = 0;
9071 PL_reg_oldcurpm = (PMOP*)NULL;
9072 PL_reg_curpm = (PMOP*)NULL;
9073 PL_reg_oldsaved = Nullch;
9074 PL_reg_oldsavedlen = 0;
9075 PL_reg_maxiter = 0;
9076 PL_reg_leftiter = 0;
9077 PL_reg_poscache = Nullch;
9078 PL_reg_poscache_size= 0;
9079
9080 /* RE engine - function pointers */
9081 PL_regcompp = proto_perl->Tregcompp;
9082 PL_regexecp = proto_perl->Tregexecp;
9083 PL_regint_start = proto_perl->Tregint_start;
9084 PL_regint_string = proto_perl->Tregint_string;
9085 PL_regfree = proto_perl->Tregfree;
9086
9087 PL_reginterp_cnt = 0;
9088 PL_reg_starttry = 0;
9089
9090#ifdef PERL_OBJECT
9091 return (PerlInterpreter*)pPerl;
9092#else
9093 return my_perl;
9094#endif
9095}
9096
9097#else /* !USE_ITHREADS */
51371543
GS		 9098
9099#ifdef PERL_OBJECT
51371543
GS		 9100#include "XSUB.h"
9101#endif
9102
1d7c1841
GS		 9103#endif /* USE_ITHREADS */
9104
51371543
GS		 9105static void
9106do_report_used(pTHXo_ SV *sv)
9107{
9108 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 9109 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 9110 sv_dump(sv);
9111 }
9112}
9113
9114static void
9115do_clean_objs(pTHXo_ SV *sv)
9116{
9117 SV* rv;
9118
9119 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
9120 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8b6e653b
HS		 9121 if (SvWEAKREF(sv)) {
9122 sv_del_backref(sv);
9123 SvWEAKREF_off(sv);
9124 SvRV(sv) = 0;
9125 } else {
9126 SvROK_off(sv);
9127 SvRV(sv) = 0;
9128 SvREFCNT_dec(rv);
9129 }
51371543
GS		 9130 }
9131
9132 /* XXX Might want to check arrays, etc. */
9133}
9134
9135#ifndef DISABLE_DESTRUCTOR_KLUDGE
9136static void
9137do_clean_named_objs(pTHXo_ SV *sv)
9138{
f472eb5c 9139 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 9140 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 9141 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
9142 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
9143 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
9144 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 9145 {
9146 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
9147 SvREFCNT_dec(sv);
9148 }
9149 }
9150}
9151#endif
9152
9153static void
9154do_clean_all(pTHXo_ SV *sv)
9155{
1d7c1841 9156 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 9157 SvFLAGS(sv) |= SVf_BREAK;
9158 SvREFCNT_dec(sv);
9159}
8af02333 9160
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