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Compiler denit.
[perl5.git] / sv.c
CommitLineData
a0d0e21e 1/* sv.c
79072805 2 *
3818b22b 3 * Copyright (c) 1991-2000, 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:
11343788
MB		 1288 {
1289 dTHR;
cea2e8a9 1290 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
22c35a8c 1291 PL_op_desc[PL_op->op_type]);
11343788 1292 }
463ee0b2 1293 }
a0d0e21e 1294 (void)SvIOK_only(sv); /* validate number */
a5f75d66 1295 SvIVX(sv) = i;
463ee0b2 1296 SvTAINT(sv);
79072805
LW		 1297}
1298
954c1994
GS		 1299/*
1300=for apidoc sv_setiv_mg
1301
1302Like C<sv_setiv>, but also handles 'set' magic.
1303
1304=cut
1305*/
1306
79072805 1307void
864dbfa3 1308Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
ef50df4b
GS		 1309{
1310 sv_setiv(sv,i);
1311 SvSETMAGIC(sv);
1312}
1313
954c1994
GS		 1314/*
1315=for apidoc sv_setuv
1316
1317Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1318See C<sv_setuv_mg>.
1319
1320=cut
1321*/
1322
ef50df4b 1323void
864dbfa3 1324Perl_sv_setuv(pTHX_ register SV *sv, UV u)
55497cff 1325{
25da4f38
IZ		 1326 sv_setiv(sv, 0);
1327 SvIsUV_on(sv);
1328 SvUVX(sv) = u;
55497cff 1329}
1330
954c1994
GS		 1331/*
1332=for apidoc sv_setuv_mg
1333
1334Like C<sv_setuv>, but also handles 'set' magic.
1335
1336=cut
1337*/
1338
55497cff 1339void
864dbfa3 1340Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
ef50df4b
GS		 1341{
1342 sv_setuv(sv,u);
1343 SvSETMAGIC(sv);
1344}
1345
954c1994
GS		 1346/*
1347=for apidoc sv_setnv
1348
1349Copies a double into the given SV. Does not handle 'set' magic. See
1350C<sv_setnv_mg>.
1351
1352=cut
1353*/
1354
ef50df4b 1355void
65202027 1356Perl_sv_setnv(pTHX_ register SV *sv, NV num)
79072805 1357{
2213622d 1358 SV_CHECK_THINKFIRST(sv);
a0d0e21e
LW		 1359 switch (SvTYPE(sv)) {
1360 case SVt_NULL:
1361 case SVt_IV:
79072805 1362 sv_upgrade(sv, SVt_NV);
a0d0e21e 1363 break;
a0d0e21e
LW		 1364 case SVt_RV:
1365 case SVt_PV:
1366 case SVt_PVIV:
79072805 1367 sv_upgrade(sv, SVt_PVNV);
a0d0e21e 1368 break;
827b7e14 1369
a0d0e21e 1370 case SVt_PVGV:
a0d0e21e
LW		 1371 case SVt_PVAV:
1372 case SVt_PVHV:
1373 case SVt_PVCV:
1374 case SVt_PVFM:
1375 case SVt_PVIO:
11343788
MB		 1376 {
1377 dTHR;
cea2e8a9 1378 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
22c35a8c 1379 PL_op_name[PL_op->op_type]);
11343788 1380 }
79072805 1381 }
463ee0b2 1382 SvNVX(sv) = num;
a0d0e21e 1383 (void)SvNOK_only(sv); /* validate number */
463ee0b2 1384 SvTAINT(sv);
79072805
LW		 1385}
1386
954c1994
GS		 1387/*
1388=for apidoc sv_setnv_mg
1389
1390Like C<sv_setnv>, but also handles 'set' magic.
1391
1392=cut
1393*/
1394
ef50df4b 1395void
65202027 1396Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
ef50df4b
GS		 1397{
1398 sv_setnv(sv,num);
1399 SvSETMAGIC(sv);
1400}
1401
76e3520e 1402STATIC void
cea2e8a9 1403S_not_a_number(pTHX_ SV *sv)
a0d0e21e 1404{
11343788 1405 dTHR;
a0d0e21e
LW		 1406 char tmpbuf[64];
1407 char *d = tmpbuf;
1408 char *s;
dc28f22b
GA		 1409 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1410 /* each *s can expand to 4 chars + "...\0",
1411 i.e. need room for 8 chars */
a0d0e21e 1412
dc28f22b 1413 for (s = SvPVX(sv); *s && d < limit; s++) {
bbce6d69 1414 int ch = *s & 0xFF;
1415 if (ch & 128 && !isPRINT_LC(ch)) {
a0d0e21e
LW		 1416 *d++ = 'M';
1417 *d++ = '-';
1418 ch &= 127;
1419 }
bbce6d69 1420 if (ch == '\n') {
1421 *d++ = '\\';
1422 *d++ = 'n';
1423 }
1424 else if (ch == '\r') {
1425 *d++ = '\\';
1426 *d++ = 'r';
1427 }
1428 else if (ch == '\f') {
1429 *d++ = '\\';
1430 *d++ = 'f';
1431 }
1432 else if (ch == '\\') {
1433 *d++ = '\\';
1434 *d++ = '\\';
1435 }
1436 else if (isPRINT_LC(ch))
a0d0e21e
LW		 1437 *d++ = ch;
1438 else {
1439 *d++ = '^';
bbce6d69 1440 *d++ = toCTRL(ch);
a0d0e21e
LW		 1441 }
1442 }
1443 if (*s) {
1444 *d++ = '.';
1445 *d++ = '.';
1446 *d++ = '.';
1447 }
1448 *d = '\0';
1449
533c011a 1450 if (PL_op)
42d38218
MS		 1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1453 PL_op_desc[PL_op->op_type]);
a0d0e21e 1454 else
42d38218
MS		 1455 Perl_warner(aTHX_ WARN_NUMERIC,
1456 "Argument \"%s\" isn't numeric", tmpbuf);
a0d0e21e
LW		 1457}
1458
cf2093f6 1459/* the number can be converted to integer with atol() or atoll() */
25da4f38
IZ		 1460#define IS_NUMBER_TO_INT_BY_ATOL 0x01
1461#define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1462#define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1463#define IS_NUMBER_NEG 0x08 /* not good to cache UV */
300aed98 1464#define IS_NUMBER_INFINITY 0x10 /* this is big */
25da4f38
IZ		 1465
1466/* Actually, ISO C leaves conversion of UV to IV undefined, but
1467 until proven guilty, assume that things are not that bad... */
1468
a0d0e21e 1469IV
864dbfa3 1470Perl_sv_2iv(pTHX_ register SV *sv)
79072805
LW		 1471{
1472 if (!sv)
1473 return 0;
8990e307 1474 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1475 mg_get(sv);
1476 if (SvIOKp(sv))
1477 return SvIVX(sv);
748a9306 1478 if (SvNOKp(sv)) {
25da4f38 1479 return I_V(SvNVX(sv));
748a9306 1480 }
36477c24 1481 if (SvPOKp(sv) && SvLEN(sv))
1482 return asIV(sv);
3fe9a6f1 1483 if (!SvROK(sv)) {
d008e5eb 1484 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1485 dTHR;
d008e5eb 1486 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1487 report_uninit();
c6ee37c5 1488 }
36477c24 1489 return 0;
3fe9a6f1 1490 }
463ee0b2 1491 }
ed6116ce 1492 if (SvTHINKFIRST(sv)) {
a0d0e21e 1493 if (SvROK(sv)) {
a0d0e21e 1494 SV* tmpstr;
1554e226
DC		 1495 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1496 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1497 return SvIV(tmpstr);
56431972 1498 return PTR2IV(SvRV(sv));
a0d0e21e 1499 }
47deb5e7
NIS		 1500 if (SvREADONLY(sv) && SvFAKE(sv)) {
1501 sv_force_normal(sv);
1502 }
0336b60e
IZ		 1503 if (SvREADONLY(sv) && !SvOK(sv)) {
1504 dTHR;
1505 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1506 report_uninit();
ed6116ce
LW		 1507 return 0;
1508 }
79072805 1509 }
25da4f38
IZ		 1510 if (SvIOKp(sv)) {
1511 if (SvIsUV(sv)) {
1512 return (IV)(SvUVX(sv));
1513 }
1514 else {
1515 return SvIVX(sv);
1516 }
463ee0b2 1517 }
748a9306 1518 if (SvNOKp(sv)) {
25da4f38
IZ		 1519 /* We can cache the IV/UV value even if it not good enough
1520 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1521 * NV over IV/UV.
25da4f38
IZ		 1522 */
1523
1524 if (SvTYPE(sv) == SVt_NV)
1525 sv_upgrade(sv, SVt_PVNV);
1526
a5f75d66 1527 (void)SvIOK_on(sv);
65202027 1528 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
748a9306 1529 SvIVX(sv) = I_V(SvNVX(sv));
25da4f38 1530 else {
ff68c719 1531 SvUVX(sv) = U_V(SvNVX(sv));
25da4f38
IZ		 1532 SvIsUV_on(sv);
1533 ret_iv_max:
1c846c1f 1534 DEBUG_c(PerlIO_printf(Perl_debug_log,
57def98f 1535 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
56431972 1536 PTR2UV(sv),
57def98f
JH		 1537 SvUVX(sv),
1538 SvUVX(sv)));
25da4f38
IZ		 1539 return (IV)SvUVX(sv);
1540 }
748a9306
LW		 1541 }
1542 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1543 I32 numtype = looks_like_number(sv);
1544
1545 /* We want to avoid a possible problem when we cache an IV which
1546 may be later translated to an NV, and the resulting NV is not
1547 the translation of the initial data.
1c846c1f 1548
25da4f38
IZ		 1549 This means that if we cache such an IV, we need to cache the
1550 NV as well. Moreover, we trade speed for space, and do not
1551 cache the NV if not needed.
1552 */
1553 if (numtype & IS_NUMBER_NOT_IV) {
1554 /* May be not an integer. Need to cache NV if we cache IV
1555 * - otherwise future conversion to NV will be wrong. */
65202027 1556 NV d;
25da4f38 1557
097ee67d 1558 d = Atof(SvPVX(sv));
25da4f38
IZ		 1559
1560 if (SvTYPE(sv) < SVt_PVNV)
1561 sv_upgrade(sv, SVt_PVNV);
1562 SvNVX(sv) = d;
1563 (void)SvNOK_on(sv);
1564 (void)SvIOK_on(sv);
65202027 1565#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1567 PTR2UV(sv), SvNVX(sv)));
65202027 1568#else
1d7c1841
GS		 1569 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1570 PTR2UV(sv), SvNVX(sv)));
65202027 1571#endif
65202027 1572 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
25da4f38
IZ		 1573 SvIVX(sv) = I_V(SvNVX(sv));
1574 else {
1575 SvUVX(sv) = U_V(SvNVX(sv));
1576 SvIsUV_on(sv);
1577 goto ret_iv_max;
1578 }
1579 }
0a3ece55
MG		 1580 else { /* The NV may be reconstructed from IV - safe to cache IV,
1581 which may be calculated by atol(). */
25da4f38
IZ		 1582 if (SvTYPE(sv) < SVt_PVIV)
1583 sv_upgrade(sv, SVt_PVIV);
25da4f38 1584 (void)SvIOK_on(sv);
0a3ece55
MG		 1585 SvIVX(sv) = Atol(SvPVX(sv));
1586 if (! numtype && ckWARN(WARN_NUMERIC))
25da4f38
IZ		 1587 not_a_number(sv);
1588 }
93a17b20 1589 }
79072805 1590 else {
11343788 1591 dTHR;
599cee73 1592 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1593 report_uninit();
25da4f38
IZ		 1594 if (SvTYPE(sv) < SVt_IV)
1595 /* Typically the caller expects that sv_any is not NULL now. */
1596 sv_upgrade(sv, SVt_IV);
a0d0e21e 1597 return 0;
79072805 1598 }
1d7c1841
GS		 1599 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1600 PTR2UV(sv),SvIVX(sv)));
25da4f38 1601 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
79072805
LW		 1602}
1603
ff68c719 1604UV
864dbfa3 1605Perl_sv_2uv(pTHX_ register SV *sv)
ff68c719 1606{
1607 if (!sv)
1608 return 0;
1609 if (SvGMAGICAL(sv)) {
1610 mg_get(sv);
1611 if (SvIOKp(sv))
1612 return SvUVX(sv);
1613 if (SvNOKp(sv))
1614 return U_V(SvNVX(sv));
36477c24 1615 if (SvPOKp(sv) && SvLEN(sv))
1616 return asUV(sv);
3fe9a6f1 1617 if (!SvROK(sv)) {
d008e5eb 1618 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1619 dTHR;
d008e5eb 1620 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1621 report_uninit();
c6ee37c5 1622 }
36477c24 1623 return 0;
3fe9a6f1 1624 }
ff68c719 1625 }
1626 if (SvTHINKFIRST(sv)) {
1627 if (SvROK(sv)) {
ff68c719 1628 SV* tmpstr;
1554e226
DC		 1629 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1630 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1631 return SvUV(tmpstr);
56431972 1632 return PTR2UV(SvRV(sv));
ff68c719 1633 }
0336b60e
IZ		 1634 if (SvREADONLY(sv) && !SvOK(sv)) {
1635 dTHR;
1636 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1637 report_uninit();
ff68c719 1638 return 0;
1639 }
1640 }
25da4f38
IZ		 1641 if (SvIOKp(sv)) {
1642 if (SvIsUV(sv)) {
1643 return SvUVX(sv);
1644 }
1645 else {
1646 return (UV)SvIVX(sv);
1647 }
ff68c719 1648 }
1649 if (SvNOKp(sv)) {
25da4f38
IZ		 1650 /* We can cache the IV/UV value even if it not good enough
1651 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1652 * NV over IV/UV.
25da4f38
IZ		 1653 */
1654 if (SvTYPE(sv) == SVt_NV)
1655 sv_upgrade(sv, SVt_PVNV);
ff68c719 1656 (void)SvIOK_on(sv);
25da4f38
IZ		 1657 if (SvNVX(sv) >= -0.5) {
1658 SvIsUV_on(sv);
1659 SvUVX(sv) = U_V(SvNVX(sv));
1660 }
1661 else {
1662 SvIVX(sv) = I_V(SvNVX(sv));
1663 ret_zero:
1c846c1f 1664 DEBUG_c(PerlIO_printf(Perl_debug_log,
07270b1a 1665 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
57def98f
JH		 1666 PTR2UV(sv),
1667 SvIVX(sv),
1668 (IV)(UV)SvIVX(sv)));
25da4f38
IZ		 1669 return (UV)SvIVX(sv);
1670 }
ff68c719 1671 }
1672 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1673 I32 numtype = looks_like_number(sv);
1674
1675 /* We want to avoid a possible problem when we cache a UV which
1676 may be later translated to an NV, and the resulting NV is not
1677 the translation of the initial data.
1c846c1f 1678
25da4f38
IZ		 1679 This means that if we cache such a UV, we need to cache the
1680 NV as well. Moreover, we trade speed for space, and do not
1681 cache the NV if not needed.
1682 */
1683 if (numtype & IS_NUMBER_NOT_IV) {
1684 /* May be not an integer. Need to cache NV if we cache IV
1685 * - otherwise future conversion to NV will be wrong. */
65202027 1686 NV d;
25da4f38 1687
cf2093f6 1688 d = Atof(SvPVX(sv));
25da4f38
IZ		 1689
1690 if (SvTYPE(sv) < SVt_PVNV)
1691 sv_upgrade(sv, SVt_PVNV);
1692 SvNVX(sv) = d;
1693 (void)SvNOK_on(sv);
1694 (void)SvIOK_on(sv);
65202027 1695#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1696 DEBUG_c(PerlIO_printf(Perl_debug_log,
1697 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1698 PTR2UV(sv), SvNVX(sv)));
65202027 1699#else
1d7c1841
GS		 1700 DEBUG_c(PerlIO_printf(Perl_debug_log,
1701 "0x%"UVxf" 2nv(%g)\n",
1702 PTR2UV(sv), SvNVX(sv)));
65202027 1703#endif
25da4f38
IZ		 1704 if (SvNVX(sv) < -0.5) {
1705 SvIVX(sv) = I_V(SvNVX(sv));
1706 goto ret_zero;
1707 } else {
1708 SvUVX(sv) = U_V(SvNVX(sv));
1709 SvIsUV_on(sv);
1710 }
1711 }
1712 else if (numtype & IS_NUMBER_NEG) {
1713 /* The NV may be reconstructed from IV - safe to cache IV,
1714 which may be calculated by atol(). */
1715 if (SvTYPE(sv) == SVt_PV)
1716 sv_upgrade(sv, SVt_PVIV);
1717 (void)SvIOK_on(sv);
cf2093f6 1718 SvIVX(sv) = (IV)Atol(SvPVX(sv));
25da4f38
IZ		 1719 }
1720 else if (numtype) { /* Non-negative */
1721 /* The NV may be reconstructed from UV - safe to cache UV,
1722 which may be calculated by strtoul()/atol. */
1723 if (SvTYPE(sv) == SVt_PV)
1724 sv_upgrade(sv, SVt_PVIV);
1725 (void)SvIOK_on(sv);
1726 (void)SvIsUV_on(sv);
1727#ifdef HAS_STRTOUL
cf2093f6 1728 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
25da4f38
IZ		 1729#else /* no atou(), but we know the number fits into IV... */
1730 /* The only problem may be if it is negative... */
cf2093f6 1731 SvUVX(sv) = (UV)Atol(SvPVX(sv));
25da4f38
IZ		 1732#endif
1733 }
1734 else { /* Not a number. Cache 0. */
1735 dTHR;
1736
1737 if (SvTYPE(sv) < SVt_PVIV)
1738 sv_upgrade(sv, SVt_PVIV);
25da4f38
IZ		 1739 (void)SvIOK_on(sv);
1740 (void)SvIsUV_on(sv);
7b9e3c00
GS		 1741 SvUVX(sv) = 0; /* We assume that 0s have the
1742 same bitmap in IV and UV. */
25da4f38
IZ		 1743 if (ckWARN(WARN_NUMERIC))
1744 not_a_number(sv);
1745 }
ff68c719 1746 }
1747 else {
d008e5eb 1748 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1749 dTHR;
d008e5eb 1750 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1751 report_uninit();
c6ee37c5 1752 }
25da4f38
IZ		 1753 if (SvTYPE(sv) < SVt_IV)
1754 /* Typically the caller expects that sv_any is not NULL now. */
1755 sv_upgrade(sv, SVt_IV);
ff68c719 1756 return 0;
1757 }
25da4f38 1758
1d7c1841
GS		 1759 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1760 PTR2UV(sv),SvUVX(sv)));
25da4f38 1761 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
ff68c719 1762}
1763
65202027 1764NV
864dbfa3 1765Perl_sv_2nv(pTHX_ register SV *sv)
79072805
LW		 1766{
1767 if (!sv)
1768 return 0.0;
8990e307 1769 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1770 mg_get(sv);
1771 if (SvNOKp(sv))
1772 return SvNVX(sv);
a0d0e21e 1773 if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1774 dTHR;
599cee73 1775 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1776 not_a_number(sv);
097ee67d 1777 return Atof(SvPVX(sv));
a0d0e21e 1778 }
25da4f38 1779 if (SvIOKp(sv)) {
1c846c1f 1780 if (SvIsUV(sv))
65202027 1781 return (NV)SvUVX(sv);
25da4f38 1782 else
65202027 1783 return (NV)SvIVX(sv);
25da4f38 1784 }
16d20bd9 1785 if (!SvROK(sv)) {
d008e5eb 1786 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1787 dTHR;
d008e5eb 1788 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1789 report_uninit();
c6ee37c5 1790 }
16d20bd9
AD		 1791 return 0;
1792 }
463ee0b2 1793 }
ed6116ce 1794 if (SvTHINKFIRST(sv)) {
a0d0e21e 1795 if (SvROK(sv)) {
a0d0e21e 1796 SV* tmpstr;
1554e226
DC		 1797 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1798 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1799 return SvNV(tmpstr);
56431972 1800 return PTR2NV(SvRV(sv));
a0d0e21e 1801 }
0336b60e 1802 if (SvREADONLY(sv) && !SvOK(sv)) {
d008e5eb 1803 dTHR;
599cee73 1804 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1805 report_uninit();
ed6116ce
LW		 1806 return 0.0;
1807 }
79072805
LW		 1808 }
1809 if (SvTYPE(sv) < SVt_NV) {
463ee0b2
LW		 1810 if (SvTYPE(sv) == SVt_IV)
1811 sv_upgrade(sv, SVt_PVNV);
1812 else
1813 sv_upgrade(sv, SVt_NV);
572bbb43 1814#if defined(USE_LONG_DOUBLE)
097ee67d 1815 DEBUG_c({
f93f4e46 1816 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1817 PerlIO_printf(Perl_debug_log,
1818 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1819 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1820 RESTORE_NUMERIC_LOCAL();
1821 });
65202027 1822#else
572bbb43 1823 DEBUG_c({
f93f4e46 1824 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1825 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1826 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1827 RESTORE_NUMERIC_LOCAL();
1828 });
572bbb43 1829#endif
79072805
LW		 1830 }
1831 else if (SvTYPE(sv) < SVt_PVNV)
1832 sv_upgrade(sv, SVt_PVNV);
748a9306
LW		 1833 if (SvIOKp(sv) &&
1834 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
93a17b20 1835 {
65202027 1836 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
93a17b20 1837 }
748a9306 1838 else if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1839 dTHR;
599cee73 1840 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1841 not_a_number(sv);
097ee67d 1842 SvNVX(sv) = Atof(SvPVX(sv));
93a17b20 1843 }
79072805 1844 else {
11343788 1845 dTHR;
599cee73 1846 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1847 report_uninit();
25da4f38
IZ		 1848 if (SvTYPE(sv) < SVt_NV)
1849 /* Typically the caller expects that sv_any is not NULL now. */
1850 sv_upgrade(sv, SVt_NV);
a0d0e21e 1851 return 0.0;
79072805
LW		 1852 }
1853 SvNOK_on(sv);
572bbb43 1854#if defined(USE_LONG_DOUBLE)
097ee67d 1855 DEBUG_c({
f93f4e46 1856 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1857 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1858 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1859 RESTORE_NUMERIC_LOCAL();
1860 });
65202027 1861#else
572bbb43 1862 DEBUG_c({
f93f4e46 1863 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1864 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1865 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1866 RESTORE_NUMERIC_LOCAL();
1867 });
572bbb43 1868#endif
463ee0b2 1869 return SvNVX(sv);
79072805
LW		 1870}
1871
76e3520e 1872STATIC IV
cea2e8a9 1873S_asIV(pTHX_ SV *sv)
36477c24 1874{
1875 I32 numtype = looks_like_number(sv);
65202027 1876 NV d;
36477c24 1877
25da4f38 1878 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1879 return Atol(SvPVX(sv));
d008e5eb
GS		 1880 if (!numtype) {
1881 dTHR;
1882 if (ckWARN(WARN_NUMERIC))
1883 not_a_number(sv);
1884 }
097ee67d 1885 d = Atof(SvPVX(sv));
25da4f38 1886 return I_V(d);
36477c24 1887}
1888
76e3520e 1889STATIC UV
cea2e8a9 1890S_asUV(pTHX_ SV *sv)
36477c24 1891{
1892 I32 numtype = looks_like_number(sv);
1893
84902520 1894#ifdef HAS_STRTOUL
25da4f38 1895 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1896 return Strtoul(SvPVX(sv), Null(char**), 10);
84902520 1897#endif
d008e5eb
GS		 1898 if (!numtype) {
1899 dTHR;
1900 if (ckWARN(WARN_NUMERIC))
1901 not_a_number(sv);
1902 }
097ee67d 1903 return U_V(Atof(SvPVX(sv)));
36477c24 1904}
1905
25da4f38
IZ		 1906/*
1907 * Returns a combination of (advisory only - can get false negatives)
1908 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1909 * IS_NUMBER_NEG
1910 * 0 if does not look like number.
1911 *
1912 * In fact possible values are 0 and
1913 * IS_NUMBER_TO_INT_BY_ATOL 123
1914 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1915 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
300aed98 1916 * IS_NUMBER_INFINITY
25da4f38
IZ		 1917 * with a possible addition of IS_NUMBER_NEG.
1918 */
1919
954c1994
GS		 1920/*
1921=for apidoc looks_like_number
1922
1923Test if an the content of an SV looks like a number (or is a
1924number).
1925
1926=cut
1927*/
1928
36477c24 1929I32
864dbfa3 1930Perl_looks_like_number(pTHX_ SV *sv)
36477c24 1931{
1932 register char *s;
1933 register char *send;
1934 register char *sbegin;
25da4f38
IZ		 1935 register char *nbegin;
1936 I32 numtype = 0;
300aed98 1937 I32 sawinf = 0;
36477c24 1938 STRLEN len;
1939
1940 if (SvPOK(sv)) {
1c846c1f 1941 sbegin = SvPVX(sv);
36477c24 1942 len = SvCUR(sv);
1943 }
1944 else if (SvPOKp(sv))
1945 sbegin = SvPV(sv, len);
1946 else
1947 return 1;
1948 send = sbegin + len;
1949
1950 s = sbegin;
1951 while (isSPACE(*s))
1952 s++;
25da4f38
IZ		 1953 if (*s == '-') {
1954 s++;
1955 numtype = IS_NUMBER_NEG;
1956 }
1957 else if (*s == '+')
36477c24 1958 s++;
ff0cee69 1959
25da4f38
IZ		 1960 nbegin = s;
1961 /*
097ee67d
JH		 1962 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1963 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1964 * (int)atof().
25da4f38
IZ		 1965 */
1966
300aed98 1967 /* next must be digit or the radix separator or beginning of infinity */
ff0cee69 1968 if (isDIGIT(*s)) {
1969 do {
1970 s++;
1971 } while (isDIGIT(*s));
25da4f38
IZ		 1972
1973 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1974 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1975 else
1976 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1977
097ee67d 1978 if (*s == '.'
1c846c1f 1979#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 1980 || IS_NUMERIC_RADIX(*s)
1981#endif
1982 ) {
ff0cee69 1983 s++;
25da4f38 1984 numtype |= IS_NUMBER_NOT_IV;
097ee67d 1985 while (isDIGIT(*s)) /* optional digits after the radix */
ff0cee69 1986 s++;
1987 }
36477c24 1988 }
097ee67d 1989 else if (*s == '.'
1c846c1f 1990#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 1991 || IS_NUMERIC_RADIX(*s)
1992#endif
1993 ) {
ff0cee69 1994 s++;
25da4f38 1995 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
097ee67d 1996 /* no digits before the radix means we need digits after it */
ff0cee69 1997 if (isDIGIT(*s)) {
1998 do {
1999 s++;
2000 } while (isDIGIT(*s));
2001 }
2002 else
2003 return 0;
2004 }
300aed98
JH		 2005 else if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'F' && *s != 'f') return 0;
2008 s++; if (*s == 'I' || *s == 'i') {
2009 s++; if (*s != 'N' && *s != 'n') return 0;
2010 s++; if (*s != 'I' && *s != 'i') return 0;
2011 s++; if (*s != 'T' && *s != 't') return 0;
2012 s++; if (*s != 'Y' && *s != 'y') return 0;
2013 }
2014 sawinf = 1;
2015 }
ff0cee69 2016 else
2017 return 0;
2018
300aed98
JH		 2019 if (sawinf)
2020 numtype = IS_NUMBER_INFINITY;
2021 else {
2022 /* we can have an optional exponent part */
2023 if (*s == 'e' || *s == 'E') {
2024 numtype &= ~IS_NUMBER_NEG;
2025 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
36477c24 2026 s++;
300aed98
JH		 2027 if (*s == '+' || *s == '-')
2028 s++;
2029 if (isDIGIT(*s)) {
2030 do {
2031 s++;
2032 } while (isDIGIT(*s));
2033 }
2034 else
2035 return 0;
2036 }
36477c24 2037 }
2038 while (isSPACE(*s))
2039 s++;
2040 if (s >= send)
2041 return numtype;
2042 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2043 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2044 return 0;
2045}
2046
79072805 2047char *
864dbfa3 2048Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2049{
2050 STRLEN n_a;
2051 return sv_2pv(sv, &n_a);
2052}
2053
25da4f38 2054/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2055static char *
25da4f38
IZ		 2056uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2057{
25da4f38
IZ		 2058 char *ptr = buf + TYPE_CHARS(UV);
2059 char *ebuf = ptr;
2060 int sign;
25da4f38
IZ		 2061
2062 if (is_uv)
2063 sign = 0;
2064 else if (iv >= 0) {
2065 uv = iv;
2066 sign = 0;
2067 } else {
2068 uv = -iv;
2069 sign = 1;
2070 }
2071 do {
2072 *--ptr = '0' + (uv % 10);
2073 } while (uv /= 10);
2074 if (sign)
2075 *--ptr = '-';
2076 *peob = ebuf;
2077 return ptr;
2078}
2079
1fa8b10d 2080char *
864dbfa3 2081Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2082{
2083 register char *s;
2084 int olderrno;
46fc3d4c 2085 SV *tsv;
25da4f38
IZ		 2086 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2087 char *tmpbuf = tbuf;
79072805 2088
463ee0b2
LW		 2089 if (!sv) {
2090 *lp = 0;
2091 return "";
2092 }
8990e307 2093 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2094 mg_get(sv);
2095 if (SvPOKp(sv)) {
2096 *lp = SvCUR(sv);
2097 return SvPVX(sv);
2098 }
cf2093f6 2099 if (SvIOKp(sv)) {
1c846c1f 2100 if (SvIsUV(sv))
57def98f 2101 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2102 else
57def98f 2103 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2104 tsv = Nullsv;
a0d0e21e 2105 goto tokensave;
463ee0b2
LW		 2106 }
2107 if (SvNOKp(sv)) {
2d4389e4 2108 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2109 tsv = Nullsv;
a0d0e21e 2110 goto tokensave;
463ee0b2 2111 }
16d20bd9 2112 if (!SvROK(sv)) {
d008e5eb 2113 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 2114 dTHR;
d008e5eb 2115 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2116 report_uninit();
c6ee37c5 2117 }
16d20bd9
AD		 2118 *lp = 0;
2119 return "";
2120 }
463ee0b2 2121 }
ed6116ce
LW		 2122 if (SvTHINKFIRST(sv)) {
2123 if (SvROK(sv)) {
a0d0e21e 2124 SV* tmpstr;
1554e226
DC		 2125 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2126 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 2127 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2128 sv = (SV*)SvRV(sv);
2129 if (!sv)
2130 s = "NULLREF";
2131 else {
f9277f47
IZ		 2132 MAGIC *mg;
2133
ed6116ce 2134 switch (SvTYPE(sv)) {
f9277f47
IZ		 2135 case SVt_PVMG:
2136 if ( ((SvFLAGS(sv) &
1c846c1f 2137 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2138 == (SVs_OBJECT|SVs_RMG))
57668c4d 2139 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2140 && (mg = mg_find(sv, 'r'))) {
5c0ca799 2141 dTHR;
2cd61cdb 2142 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2143
2cd61cdb 2144 if (!mg->mg_ptr) {
8782bef2
GB		 2145 char *fptr = "msix";
2146 char reflags[6];
2147 char ch;
2148 int left = 0;
2149 int right = 4;
2150 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2151
155aba94 2152 while((ch = *fptr++)) {
8782bef2
GB		 2153 if(reganch & 1) {
2154 reflags[left++] = ch;
2155 }
2156 else {
2157 reflags[right--] = ch;
2158 }
2159 reganch >>= 1;
2160 }
2161 if(left != 4) {
2162 reflags[left] = '-';
2163 left = 5;
2164 }
2165
2166 mg->mg_len = re->prelen + 4 + left;
2167 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2168 Copy("(?", mg->mg_ptr, 2, char);
2169 Copy(reflags, mg->mg_ptr+2, left, char);
2170 Copy(":", mg->mg_ptr+left+2, 1, char);
2171 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2172 mg->mg_ptr[mg->mg_len - 1] = ')';
2173 mg->mg_ptr[mg->mg_len] = 0;
2174 }
3280af22 2175 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2176 *lp = mg->mg_len;
2177 return mg->mg_ptr;
f9277f47
IZ		 2178 }
2179 /* Fall through */
ed6116ce
LW		 2180 case SVt_NULL:
2181 case SVt_IV:
2182 case SVt_NV:
2183 case SVt_RV:
2184 case SVt_PV:
2185 case SVt_PVIV:
2186 case SVt_PVNV:
81689caa
HS		 2187 case SVt_PVBM: if (SvROK(sv))
2188 s = "REF";
2189 else
2190 s = "SCALAR"; break;
ed6116ce
LW		 2191 case SVt_PVLV: s = "LVALUE"; break;
2192 case SVt_PVAV: s = "ARRAY"; break;
2193 case SVt_PVHV: s = "HASH"; break;
2194 case SVt_PVCV: s = "CODE"; break;
2195 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2196 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2197 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2198 default: s = "UNKNOWN"; break;
2199 }
46fc3d4c 2200 tsv = NEWSV(0,0);
ed6116ce 2201 if (SvOBJECT(sv))
cea2e8a9 2202 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2203 else
46fc3d4c 2204 sv_setpv(tsv, s);
57def98f 2205 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2206 goto tokensaveref;
463ee0b2 2207 }
ed6116ce
LW		 2208 *lp = strlen(s);
2209 return s;
79072805 2210 }
0336b60e
IZ		 2211 if (SvREADONLY(sv) && !SvOK(sv)) {
2212 dTHR;
2213 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2214 report_uninit();
ed6116ce
LW		 2215 *lp = 0;
2216 return "";
79072805 2217 }
79072805 2218 }
25da4f38
IZ		 2219 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2220 /* XXXX 64-bit? IV may have better precision... */
8aad8eb3 2221 /* I tried changing this to be 64-bit-aware and
34d861e4
JH		 2222 * the t/op/numconvert.t became very, very, angry.
2223 * --jhi Sep 1999 */
79072805
LW		 2224 if (SvTYPE(sv) < SVt_PVNV)
2225 sv_upgrade(sv, SVt_PVNV);
1c846c1f 2226 /* The +20 is pure guesswork. Configure test needed. --jhi */
59155cc0 2227 SvGROW(sv, NV_DIG + 20);
463ee0b2 2228 s = SvPVX(sv);
79072805 2229 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2230#ifdef apollo
463ee0b2 2231 if (SvNVX(sv) == 0.0)
79072805
LW		 2232 (void)strcpy(s,"0");
2233 else
2234#endif /*apollo*/
bbce6d69 2235 {
2d4389e4 2236 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2237 }
79072805 2238 errno = olderrno;
a0d0e21e
LW		 2239#ifdef FIXNEGATIVEZERO
2240 if (*s == '-' && s[1] == '0' && !s[2])
2241 strcpy(s,"0");
2242#endif
79072805
LW		 2243 while (*s) s++;
2244#ifdef hcx
2245 if (s[-1] == '.')
46fc3d4c 2246 *--s = '\0';
79072805
LW		 2247#endif
2248 }
748a9306 2249 else if (SvIOKp(sv)) {
25da4f38 2250 U32 isIOK = SvIOK(sv);
0336b60e 2251 U32 isUIOK = SvIsUV(sv);
25da4f38
IZ		 2252 char buf[TYPE_CHARS(UV)];
2253 char *ebuf, *ptr;
2254
79072805
LW		 2255 if (SvTYPE(sv) < SVt_PVIV)
2256 sv_upgrade(sv, SVt_PVIV);
0336b60e 2257 if (isUIOK)
25da4f38 2258 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
0336b60e 2259 else
25da4f38 2260 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
0336b60e
IZ		 2261 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2262 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2263 SvCUR_set(sv, ebuf - ptr);
46fc3d4c 2264 s = SvEND(sv);
0336b60e 2265 *s = '\0';
25da4f38 2266 if (isIOK)
64f14228
GA		 2267 SvIOK_on(sv);
2268 else
2269 SvIOKp_on(sv);
0336b60e
IZ		 2270 if (isUIOK)
2271 SvIsUV_on(sv);
2272 SvPOK_on(sv);
79072805
LW		 2273 }
2274 else {
11343788 2275 dTHR;
0336b60e
IZ		 2276 if (ckWARN(WARN_UNINITIALIZED)
2277 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2278 {
1d7c1841 2279 report_uninit();
0336b60e 2280 }
a0d0e21e 2281 *lp = 0;
25da4f38
IZ		 2282 if (SvTYPE(sv) < SVt_PV)
2283 /* Typically the caller expects that sv_any is not NULL now. */
2284 sv_upgrade(sv, SVt_PV);
a0d0e21e 2285 return "";
79072805 2286 }
463ee0b2
LW		 2287 *lp = s - SvPVX(sv);
2288 SvCUR_set(sv, *lp);
79072805 2289 SvPOK_on(sv);
1d7c1841
GS		 2290 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2291 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2292 return SvPVX(sv);
a0d0e21e
LW		 2293
2294 tokensave:
2295 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2296 /* Sneaky stuff here */
2297
2298 tokensaveref:
46fc3d4c 2299 if (!tsv)
96827780 2300 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2301 sv_2mortal(tsv);
2302 *lp = SvCUR(tsv);
2303 return SvPVX(tsv);
a0d0e21e
LW		 2304 }
2305 else {
2306 STRLEN len;
46fc3d4c 2307 char *t;
2308
2309 if (tsv) {
2310 sv_2mortal(tsv);
2311 t = SvPVX(tsv);
2312 len = SvCUR(tsv);
2313 }
2314 else {
96827780
MB		 2315 t = tmpbuf;
2316 len = strlen(tmpbuf);
46fc3d4c 2317 }
a0d0e21e 2318#ifdef FIXNEGATIVEZERO
46fc3d4c 2319 if (len == 2 && t[0] == '-' && t[1] == '0') {
2320 t = "0";
2321 len = 1;
2322 }
a0d0e21e
LW		 2323#endif
2324 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2325 *lp = len;
a0d0e21e
LW		 2326 s = SvGROW(sv, len + 1);
2327 SvCUR_set(sv, len);
46fc3d4c 2328 (void)strcpy(s, t);
6bf554b4 2329 SvPOKp_on(sv);
a0d0e21e
LW		 2330 return s;
2331 }
463ee0b2
LW		 2332}
2333
7340a771
GS		 2334char *
2335Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2336{
560a288e
GS		 2337 STRLEN n_a;
2338 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2339}
2340
2341char *
2342Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2343{
2344 return sv_2pv(sv,lp);
2345}
2346
2347char *
2348Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2349{
560a288e
GS		 2350 STRLEN n_a;
2351 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2352}
2353
2354char *
2355Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2356{
560a288e 2357 sv_utf8_upgrade(sv);
7340a771
GS		 2358 return sv_2pv(sv,lp);
2359}
1c846c1f 2360
463ee0b2
LW		 2361/* This function is only called on magical items */
2362bool
864dbfa3 2363Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2364{
8990e307 2365 if (SvGMAGICAL(sv))
463ee0b2
LW		 2366 mg_get(sv);
2367
a0d0e21e
LW		 2368 if (!SvOK(sv))
2369 return 0;
2370 if (SvROK(sv)) {
11343788 2371 dTHR;
a0d0e21e 2372 SV* tmpsv;
1554e226
DC		 2373 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2374 (SvRV(tmpsv) != SvRV(sv)))
9e7bc3e8 2375 return SvTRUE(tmpsv);
a0d0e21e
LW		 2376 return SvRV(sv) != 0;
2377 }
463ee0b2 2378 if (SvPOKp(sv)) {
11343788
MB		 2379 register XPV* Xpvtmp;
2380 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2381 (*Xpvtmp->xpv_pv > '0' ||
2382 Xpvtmp->xpv_cur > 1 ||
2383 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2384 return 1;
2385 else
2386 return 0;
2387 }
2388 else {
2389 if (SvIOKp(sv))
2390 return SvIVX(sv) != 0;
2391 else {
2392 if (SvNOKp(sv))
2393 return SvNVX(sv) != 0.0;
2394 else
2395 return FALSE;
2396 }
2397 }
79072805
LW		 2398}
2399
c461cf8f
JH		 2400/*
2401=for apidoc sv_utf8_upgrade
2402
2403Convert the PV of an SV to its UTF8-encoded form.
2404
2405=cut
2406*/
2407
560a288e
GS		 2408void
2409Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2410{
40826f67
JH		 2411 char *s, *t;
2412 bool hibit;
560a288e
GS		 2413
2414 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2415 return;
2416
40826f67
JH		 2417 /* This function could be much more efficient if we had a FLAG in SVs
2418 * to signal if there are any hibit chars in the PV.
560a288e 2419 */
40826f67
JH		 2420 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2421 if (*t & 0x80)
2422 hibit = TRUE;
560a288e 2423
40826f67 2424 if (hibit) {
67e989fb 2425 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
00df9076 2426 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
841d7a39
JH		 2427 SvCUR(sv) = len - 1;
2428 SvLEN(sv) = len; /* No longer know the real size. */
560a288e 2429 SvUTF8_on(sv);
d2f449dd 2430 Safefree(s); /* No longer using what was there before. */
560a288e
GS		 2431 }
2432}
2433
c461cf8f
JH		 2434/*
2435=for apidoc sv_utf8_downgrade
2436
2437Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2438This may not be possible if the PV contains non-byte encoding characters;
2439if this is the case, either returns false or, if C<fail_ok> is not
2440true, croaks.
2441
2442=cut
2443*/
2444
560a288e
GS		 2445bool
2446Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2447{
2448 if (SvPOK(sv) && SvUTF8(sv)) {
2449 char *c = SvPVX(sv);
9f9ab905 2450 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
00df9076 2451 if (!utf8_to_bytes((U8*)c, &len)) {
67e989fb
JH		 2452 if (fail_ok)
2453 return FALSE;
4b3603a4
JH		 2454 else {
2455 if (PL_op)
2456 Perl_croak(aTHX_ "Wide character in %s",
2457 PL_op_desc[PL_op->op_type]);
2458 else
2459 Perl_croak(aTHX_ "Wide character");
2460 }
67e989fb
JH		 2461 }
2462 SvCUR(sv) = len - 1;
9f9ab905 2463 SvUTF8_off(sv);
560a288e
GS		 2464 }
2465 return TRUE;
2466}
2467
c461cf8f
JH		 2468/*
2469=for apidoc sv_utf8_encode
2470
2471Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
1c846c1f 2472flag so that it looks like bytes again. Nothing calls this.
c461cf8f
JH		 2473
2474=cut
2475*/
2476
560a288e
GS		 2477void
2478Perl_sv_utf8_encode(pTHX_ register SV *sv)
2479{
2480 sv_utf8_upgrade(sv);
2481 SvUTF8_off(sv);
2482}
2483
2484bool
2485Perl_sv_utf8_decode(pTHX_ register SV *sv)
2486{
2487 if (SvPOK(sv)) {
2488 char *c;
2489 bool has_utf = FALSE;
2490 if (!sv_utf8_downgrade(sv, TRUE))
2491 return FALSE;
2492
2493 /* it is actually just a matter of turning the utf8 flag on, but
2494 * we want to make sure everything inside is valid utf8 first.
2495 */
2496 c = SvPVX(sv);
00df9076 2497 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
67e989fb
JH		 2498 return FALSE;
2499
560a288e 2500 while (c < SvEND(sv)) {
67e989fb
JH		 2501 if (*c++ & 0x80) {
2502 SvUTF8_on(sv);
2503 break;
2504 }
560a288e 2505 }
560a288e
GS		 2506 }
2507 return TRUE;
2508}
2509
2510
79072805 2511/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 2512 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 2513 * as temporary.
2514 */
2515
954c1994
GS		 2516/*
2517=for apidoc sv_setsv
2518
2519Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2520The source SV may be destroyed if it is mortal. Does not handle 'set'
2521magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2522C<sv_setsv_mg>.
2523
2524=cut
2525*/
2526
79072805 2527void
864dbfa3 2528Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 2529{
11343788 2530 dTHR;
8990e307
LW		 2531 register U32 sflags;
2532 register int dtype;
2533 register int stype;
463ee0b2 2534
79072805
LW		 2535 if (sstr == dstr)
2536 return;
2213622d 2537 SV_CHECK_THINKFIRST(dstr);
79072805 2538 if (!sstr)
3280af22 2539 sstr = &PL_sv_undef;
8990e307
LW		 2540 stype = SvTYPE(sstr);
2541 dtype = SvTYPE(dstr);
79072805 2542
a0d0e21e 2543 SvAMAGIC_off(dstr);
9e7bc3e8 2544
463ee0b2 2545 /* There's a lot of redundancy below but we're going for speed here */
79072805 2546
8990e307 2547 switch (stype) {
79072805 2548 case SVt_NULL:
aece5585 2549 undef_sstr:
20408e3c
GS		 2550 if (dtype != SVt_PVGV) {
2551 (void)SvOK_off(dstr);
2552 return;
2553 }
2554 break;
463ee0b2 2555 case SVt_IV:
aece5585
GA		 2556 if (SvIOK(sstr)) {
2557 switch (dtype) {
2558 case SVt_NULL:
8990e307 2559 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 2560 break;
2561 case SVt_NV:
8990e307 2562 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2563 break;
2564 case SVt_RV:
2565 case SVt_PV:
a0d0e21e 2566 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 2567 break;
2568 }
2569 (void)SvIOK_only(dstr);
2570 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 2571 if (SvIsUV(sstr))
2572 SvIsUV_on(dstr);
27c9684d
AP		 2573 if (SvTAINTED(sstr))
2574 SvTAINT(dstr);
aece5585 2575 return;
8990e307 2576 }
aece5585
GA		 2577 goto undef_sstr;
2578
463ee0b2 2579 case SVt_NV:
aece5585
GA		 2580 if (SvNOK(sstr)) {
2581 switch (dtype) {
2582 case SVt_NULL:
2583 case SVt_IV:
8990e307 2584 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 2585 break;
2586 case SVt_RV:
2587 case SVt_PV:
2588 case SVt_PVIV:
a0d0e21e 2589 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2590 break;
2591 }
2592 SvNVX(dstr) = SvNVX(sstr);
2593 (void)SvNOK_only(dstr);
27c9684d
AP		 2594 if (SvTAINTED(sstr))
2595 SvTAINT(dstr);
aece5585 2596 return;
8990e307 2597 }
aece5585
GA		 2598 goto undef_sstr;
2599
ed6116ce 2600 case SVt_RV:
8990e307 2601 if (dtype < SVt_RV)
ed6116ce 2602 sv_upgrade(dstr, SVt_RV);
c07a80fd 2603 else if (dtype == SVt_PVGV &&
2604 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2605 sstr = SvRV(sstr);
a5f75d66 2606 if (sstr == dstr) {
1d7c1841
GS		 2607 if (GvIMPORTED(dstr) != GVf_IMPORTED
2608 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2609 {
a5f75d66 2610 GvIMPORTED_on(dstr);
1d7c1841 2611 }
a5f75d66
AD		 2612 GvMULTI_on(dstr);
2613 return;
2614 }
c07a80fd 2615 goto glob_assign;
2616 }
ed6116ce 2617 break;
463ee0b2 2618 case SVt_PV:
fc36a67e 2619 case SVt_PVFM:
8990e307 2620 if (dtype < SVt_PV)
463ee0b2 2621 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 2622 break;
2623 case SVt_PVIV:
8990e307 2624 if (dtype < SVt_PVIV)
463ee0b2 2625 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 2626 break;
2627 case SVt_PVNV:
8990e307 2628 if (dtype < SVt_PVNV)
463ee0b2 2629 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 2630 break;
4633a7c4
LW		 2631 case SVt_PVAV:
2632 case SVt_PVHV:
2633 case SVt_PVCV:
4633a7c4 2634 case SVt_PVIO:
533c011a 2635 if (PL_op)
cea2e8a9 2636 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 2637 PL_op_name[PL_op->op_type]);
4633a7c4 2638 else
cea2e8a9 2639 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 2640 break;
2641
79072805 2642 case SVt_PVGV:
8990e307 2643 if (dtype <= SVt_PVGV) {
c07a80fd 2644 glob_assign:
a5f75d66 2645 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 2646 char *name = GvNAME(sstr);
2647 STRLEN len = GvNAMELEN(sstr);
463ee0b2 2648 sv_upgrade(dstr, SVt_PVGV);
6662521e 2649 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 2650 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 2651 GvNAME(dstr) = savepvn(name, len);
2652 GvNAMELEN(dstr) = len;
2653 SvFAKE_on(dstr); /* can coerce to non-glob */
2654 }
7bac28a0 2655 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 2656 else if (PL_curstackinfo->si_type == PERLSI_SORT
2657 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 2658 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 2659 GvNAME(dstr));
a0d0e21e 2660 (void)SvOK_off(dstr);
a5f75d66 2661 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 2662 gp_free((GV*)dstr);
79072805 2663 GvGP(dstr) = gp_ref(GvGP(sstr));
27c9684d
AP		 2664 if (SvTAINTED(sstr))
2665 SvTAINT(dstr);
1d7c1841
GS		 2666 if (GvIMPORTED(dstr) != GVf_IMPORTED
2667 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2668 {
a5f75d66 2669 GvIMPORTED_on(dstr);
1d7c1841 2670 }
a5f75d66 2671 GvMULTI_on(dstr);
79072805
LW		 2672 return;
2673 }
2674 /* FALL THROUGH */
2675
2676 default:
973f89ab
CS		 2677 if (SvGMAGICAL(sstr)) {
2678 mg_get(sstr);
2679 if (SvTYPE(sstr) != stype) {
2680 stype = SvTYPE(sstr);
2681 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2682 goto glob_assign;
2683 }
2684 }
ded42b9f 2685 if (stype == SVt_PVLV)
6fc92669 2686 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 2687 else
6fc92669 2688 (void)SvUPGRADE(dstr, stype);
79072805
LW		 2689 }
2690
8990e307
LW		 2691 sflags = SvFLAGS(sstr);
2692
2693 if (sflags & SVf_ROK) {
2694 if (dtype >= SVt_PV) {
2695 if (dtype == SVt_PVGV) {
2696 SV *sref = SvREFCNT_inc(SvRV(sstr));
2697 SV *dref = 0;
a5f75d66 2698 int intro = GvINTRO(dstr);
a0d0e21e
LW		 2699
2700 if (intro) {
2701 GP *gp;
1d7c1841 2702 gp_free((GV*)dstr);
a5f75d66 2703 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 2704 Newz(602,gp, 1, GP);
44a8e56a 2705 GvGP(dstr) = gp_ref(gp);
a0d0e21e 2706 GvSV(dstr) = NEWSV(72,0);
1d7c1841 2707 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 2708 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 2709 }
a5f75d66 2710 GvMULTI_on(dstr);
8990e307
LW		 2711 switch (SvTYPE(sref)) {
2712 case SVt_PVAV:
a0d0e21e
LW		 2713 if (intro)
2714 SAVESPTR(GvAV(dstr));
2715 else
2716 dref = (SV*)GvAV(dstr);
8990e307 2717 GvAV(dstr) = (AV*)sref;
39bac7f7 2718 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 2719 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2720 {
a5f75d66 2721 GvIMPORTED_AV_on(dstr);
1d7c1841 2722 }
8990e307
LW		 2723 break;
2724 case SVt_PVHV:
a0d0e21e
LW		 2725 if (intro)
2726 SAVESPTR(GvHV(dstr));
2727 else
2728 dref = (SV*)GvHV(dstr);
8990e307 2729 GvHV(dstr) = (HV*)sref;
39bac7f7 2730 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 2731 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2732 {
a5f75d66 2733 GvIMPORTED_HV_on(dstr);
1d7c1841 2734 }
8990e307
LW		 2735 break;
2736 case SVt_PVCV:
8ebc5c01 2737 if (intro) {
2738 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2739 SvREFCNT_dec(GvCV(dstr));
2740 GvCV(dstr) = Nullcv;
68dc0745 2741 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 2742 PL_sub_generation++;
8ebc5c01 2743 }
a0d0e21e 2744 SAVESPTR(GvCV(dstr));
8ebc5c01 2745 }
68dc0745 2746 else
2747 dref = (SV*)GvCV(dstr);
2748 if (GvCV(dstr) != (CV*)sref) {
748a9306 2749 CV* cv = GvCV(dstr);
4633a7c4 2750 if (cv) {
68dc0745 2751 if (!GvCVGEN((GV*)dstr) &&
2752 (CvROOT(cv) || CvXSUB(cv)))
2753 {
beab0874 2754 SV *const_sv;
7bac28a0 2755 /* ahem, death to those who redefine
2756 * active sort subs */
3280af22
NIS		 2757 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2758 PL_sortcop == CvSTART(cv))
1c846c1f 2759 Perl_croak(aTHX_
7bac28a0 2760 "Can't redefine active sort subroutine %s",
2761 GvENAME((GV*)dstr));
beab0874
JT		 2762 /* Redefining a sub - warning is mandatory if
2763 it was a const and its value changed. */
2764 if (ckWARN(WARN_REDEFINE)
2765 || (CvCONST(cv)
2766 && (!CvCONST((CV*)sref)
2767 || sv_cmp(cv_const_sv(cv),
2768 cv_const_sv((CV*)sref)))))
2769 {
2770 Perl_warner(aTHX_ WARN_REDEFINE,
2771 CvCONST(cv)
2772 ? "Constant subroutine %s redefined"
47deb5e7 2773 : "Subroutine %s redefined",
beab0874
JT		 2774 GvENAME((GV*)dstr));
2775 }
9607fc9c 2776 }
3fe9a6f1 2777 cv_ckproto(cv, (GV*)dstr,
2778 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 2779 }
a5f75d66 2780 GvCV(dstr) = (CV*)sref;
7a4c00b4 2781 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 2782 GvASSUMECV_on(dstr);
3280af22 2783 PL_sub_generation++;
a5f75d66 2784 }
39bac7f7 2785 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 2786 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2787 {
a5f75d66 2788 GvIMPORTED_CV_on(dstr);
1d7c1841 2789 }
8990e307 2790 break;
91bba347
LW		 2791 case SVt_PVIO:
2792 if (intro)
2793 SAVESPTR(GvIOp(dstr));
2794 else
2795 dref = (SV*)GvIOp(dstr);
2796 GvIOp(dstr) = (IO*)sref;
2797 break;
f4d13ee9
JH		 2798 case SVt_PVFM:
2799 if (intro)
2800 SAVESPTR(GvFORM(dstr));
2801 else
2802 dref = (SV*)GvFORM(dstr);
2803 GvFORM(dstr) = (CV*)sref;
2804 break;
8990e307 2805 default:
a0d0e21e
LW		 2806 if (intro)
2807 SAVESPTR(GvSV(dstr));
2808 else
2809 dref = (SV*)GvSV(dstr);
8990e307 2810 GvSV(dstr) = sref;
39bac7f7 2811 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 2812 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2813 {
a5f75d66 2814 GvIMPORTED_SV_on(dstr);
1d7c1841 2815 }
8990e307
LW		 2816 break;
2817 }
2818 if (dref)
2819 SvREFCNT_dec(dref);
a0d0e21e
LW		 2820 if (intro)
2821 SAVEFREESV(sref);
27c9684d
AP		 2822 if (SvTAINTED(sstr))
2823 SvTAINT(dstr);
8990e307
LW		 2824 return;
2825 }
a0d0e21e 2826 if (SvPVX(dstr)) {
760ac839 2827 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 2828 if (SvLEN(dstr))
2829 Safefree(SvPVX(dstr));
a0d0e21e
LW		 2830 SvLEN(dstr)=SvCUR(dstr)=0;
2831 }
8990e307 2832 }
a0d0e21e 2833 (void)SvOK_off(dstr);
8990e307 2834 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 2835 SvROK_on(dstr);
8990e307 2836 if (sflags & SVp_NOK) {
ed6116ce
LW		 2837 SvNOK_on(dstr);
2838 SvNVX(dstr) = SvNVX(sstr);
2839 }
8990e307 2840 if (sflags & SVp_IOK) {
a0d0e21e 2841 (void)SvIOK_on(dstr);
ed6116ce 2842 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2843 if (sflags & SVf_IVisUV)
25da4f38 2844 SvIsUV_on(dstr);
ed6116ce 2845 }
a0d0e21e
LW		 2846 if (SvAMAGIC(sstr)) {
2847 SvAMAGIC_on(dstr);
2848 }
ed6116ce 2849 }
8990e307 2850 else if (sflags & SVp_POK) {
79072805
LW		 2851
2852 /*
2853 * Check to see if we can just swipe the string. If so, it's a
2854 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 2855 * It might even be a win on short strings if SvPVX(dstr)
2856 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 2857 */
2858
ff68c719 2859 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 2860 SvREFCNT(sstr) == 1 && /* and no other references to it? */
1c846c1f
NIS		 2861 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2862 SvLEN(sstr)) /* and really is a string */
a5f75d66 2863 {
adbc6bb1 2864 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 2865 if (SvOOK(dstr)) {
2866 SvFLAGS(dstr) &= ~SVf_OOK;
2867 Safefree(SvPVX(dstr) - SvIVX(dstr));
2868 }
50483b2c 2869 else if (SvLEN(dstr))
a5f75d66 2870 Safefree(SvPVX(dstr));
79072805 2871 }
a5f75d66 2872 (void)SvPOK_only(dstr);
463ee0b2 2873 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 2874 SvLEN_set(dstr, SvLEN(sstr));
2875 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 2876
79072805 2877 SvTEMP_off(dstr);
2b1c7e3e 2878 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 2879 SvPV_set(sstr, Nullch);
2880 SvLEN_set(sstr, 0);
a5f75d66
AD		 2881 SvCUR_set(sstr, 0);
2882 SvTEMP_off(sstr);
79072805
LW		 2883 }
2884 else { /* have to copy actual string */
8990e307
LW		 2885 STRLEN len = SvCUR(sstr);
2886
2887 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2888 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2889 SvCUR_set(dstr, len);
2890 *SvEND(dstr) = '\0';
a0d0e21e 2891 (void)SvPOK_only(dstr);
79072805 2892 }
3aa33fe5 2893 if ((sflags & SVf_UTF8) && !IN_BYTE)
a7cb1f99 2894 SvUTF8_on(dstr);
79072805 2895 /*SUPPRESS 560*/
8990e307 2896 if (sflags & SVp_NOK) {
79072805 2897 SvNOK_on(dstr);
463ee0b2 2898 SvNVX(dstr) = SvNVX(sstr);
79072805 2899 }
8990e307 2900 if (sflags & SVp_IOK) {
a0d0e21e 2901 (void)SvIOK_on(dstr);
463ee0b2 2902 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2903 if (sflags & SVf_IVisUV)
25da4f38 2904 SvIsUV_on(dstr);
79072805
LW		 2905 }
2906 }
8990e307 2907 else if (sflags & SVp_NOK) {
463ee0b2 2908 SvNVX(dstr) = SvNVX(sstr);
a0d0e21e 2909 (void)SvNOK_only(dstr);
2b1c7e3e 2910 if (sflags & SVf_IOK) {
a0d0e21e 2911 (void)SvIOK_on(dstr);
463ee0b2 2912 SvIVX(dstr) = SvIVX(sstr);
25da4f38 2913 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 2914 if (sflags & SVf_IVisUV)
25da4f38 2915 SvIsUV_on(dstr);
79072805
LW		 2916 }
2917 }
8990e307 2918 else if (sflags & SVp_IOK) {
a0d0e21e 2919 (void)SvIOK_only(dstr);
463ee0b2 2920 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2921 if (sflags & SVf_IVisUV)
25da4f38 2922 SvIsUV_on(dstr);
79072805
LW		 2923 }
2924 else {
20408e3c 2925 if (dtype == SVt_PVGV) {
e476b1b5
GS		 2926 if (ckWARN(WARN_MISC))
2927 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 2928 }
2929 else
2930 (void)SvOK_off(dstr);
a0d0e21e 2931 }
27c9684d
AP		 2932 if (SvTAINTED(sstr))
2933 SvTAINT(dstr);
79072805
LW		 2934}
2935
954c1994
GS		 2936/*
2937=for apidoc sv_setsv_mg
2938
2939Like C<sv_setsv>, but also handles 'set' magic.
2940
2941=cut
2942*/
2943
79072805 2944void
864dbfa3 2945Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 2946{
2947 sv_setsv(dstr,sstr);
2948 SvSETMAGIC(dstr);
2949}
2950
954c1994
GS		 2951/*
2952=for apidoc sv_setpvn
2953
2954Copies a string into an SV. The C<len> parameter indicates the number of
2955bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2956
2957=cut
2958*/
2959
ef50df4b 2960void
864dbfa3 2961Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 2962{
c6f8c383 2963 register char *dptr;
4561caa4
CS		 2964 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2965 elicit a warning, but it won't hurt. */
2213622d 2966 SV_CHECK_THINKFIRST(sv);
463ee0b2 2967 if (!ptr) {
a0d0e21e 2968 (void)SvOK_off(sv);
463ee0b2
LW		 2969 return;
2970 }
6fc92669 2971 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 2972
79072805 2973 SvGROW(sv, len + 1);
c6f8c383
GA		 2974 dptr = SvPVX(sv);
2975 Move(ptr,dptr,len,char);
2976 dptr[len] = '\0';
79072805 2977 SvCUR_set(sv, len);
a0d0e21e 2978 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 2979 SvTAINT(sv);
79072805
LW		 2980}
2981
954c1994
GS		 2982/*
2983=for apidoc sv_setpvn_mg
2984
2985Like C<sv_setpvn>, but also handles 'set' magic.
2986
2987=cut
2988*/
2989
79072805 2990void
864dbfa3 2991Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 2992{
2993 sv_setpvn(sv,ptr,len);
2994 SvSETMAGIC(sv);
2995}
2996
954c1994
GS		 2997/*
2998=for apidoc sv_setpv
2999
3000Copies a string into an SV. The string must be null-terminated. Does not
3001handle 'set' magic. See C<sv_setpv_mg>.
3002
3003=cut
3004*/
3005
ef50df4b 3006void
864dbfa3 3007Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3008{
3009 register STRLEN len;
3010
2213622d 3011 SV_CHECK_THINKFIRST(sv);
463ee0b2 3012 if (!ptr) {
a0d0e21e 3013 (void)SvOK_off(sv);
463ee0b2
LW		 3014 return;
3015 }
79072805 3016 len = strlen(ptr);
6fc92669 3017 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3018
79072805 3019 SvGROW(sv, len + 1);
463ee0b2 3020 Move(ptr,SvPVX(sv),len+1,char);
79072805 3021 SvCUR_set(sv, len);
a0d0e21e 3022 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2
LW		 3023 SvTAINT(sv);
3024}
3025
954c1994
GS		 3026/*
3027=for apidoc sv_setpv_mg
3028
3029Like C<sv_setpv>, but also handles 'set' magic.
3030
3031=cut
3032*/
3033
463ee0b2 3034void
864dbfa3 3035Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3036{
3037 sv_setpv(sv,ptr);
3038 SvSETMAGIC(sv);
3039}
3040
954c1994
GS		 3041/*
3042=for apidoc sv_usepvn
3043
3044Tells an SV to use C<ptr> to find its string value. Normally the string is
1c846c1f 3045stored inside the SV but sv_usepvn allows the SV to use an outside string.
954c1994
GS		 3046The C<ptr> should point to memory that was allocated by C<malloc>. The
3047string length, C<len>, must be supplied. This function will realloc the
3048memory pointed to by C<ptr>, so that pointer should not be freed or used by
3049the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3050See C<sv_usepvn_mg>.
3051
3052=cut
3053*/
3054
ef50df4b 3055void
864dbfa3 3056Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3057{
2213622d 3058 SV_CHECK_THINKFIRST(sv);
c6f8c383 3059 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3060 if (!ptr) {
a0d0e21e 3061 (void)SvOK_off(sv);
463ee0b2
LW		 3062 return;
3063 }
a0ed51b3 3064 (void)SvOOK_off(sv);
50483b2c 3065 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3066 Safefree(SvPVX(sv));
3067 Renew(ptr, len+1, char);
3068 SvPVX(sv) = ptr;
3069 SvCUR_set(sv, len);
3070 SvLEN_set(sv, len+1);
3071 *SvEND(sv) = '\0';
a0d0e21e 3072 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3073 SvTAINT(sv);
79072805
LW		 3074}
3075
954c1994
GS		 3076/*
3077=for apidoc sv_usepvn_mg
3078
3079Like C<sv_usepvn>, but also handles 'set' magic.
3080
3081=cut
3082*/
3083
ef50df4b 3084void
864dbfa3 3085Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3086{
51c1089b 3087 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3088 SvSETMAGIC(sv);
3089}
3090
6fc92669 3091void
864dbfa3 3092Perl_sv_force_normal(pTHX_ register SV *sv)
0f15f207 3093{
2213622d
GA		 3094 if (SvREADONLY(sv)) {
3095 dTHR;
1c846c1f
NIS		 3096 if (SvFAKE(sv)) {
3097 char *pvx = SvPVX(sv);
3098 STRLEN len = SvCUR(sv);
3099 U32 hash = SvUVX(sv);
3100 SvGROW(sv, len + 1);
3101 Move(pvx,SvPVX(sv),len,char);
3102 *SvEND(sv) = '\0';
3103 SvFAKE_off(sv);
3104 SvREADONLY_off(sv);
3105 unsharepvn(pvx,len,hash);
3106 }
3107 else if (PL_curcop != &PL_compiling)
cea2e8a9 3108 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3109 }
2213622d
GA		 3110 if (SvROK(sv))
3111 sv_unref(sv);
6fc92669
GS		 3112 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3113 sv_unglob(sv);
0f15f207 3114}
1c846c1f 3115
954c1994
GS		 3116/*
3117=for apidoc sv_chop
3118
1c846c1f 3119Efficient removal of characters from the beginning of the string buffer.
954c1994
GS		 3120SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3121the string buffer. The C<ptr> becomes the first character of the adjusted
3122string.
3123
3124=cut
3125*/
3126
79072805 3127void
864dbfa3 3128Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
1c846c1f
NIS		 3129
3130
79072805
LW		 3131{
3132 register STRLEN delta;
3133
a0d0e21e 3134 if (!ptr || !SvPOKp(sv))
79072805 3135 return;
2213622d 3136 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3137 if (SvTYPE(sv) < SVt_PVIV)
3138 sv_upgrade(sv,SVt_PVIV);
3139
3140 if (!SvOOK(sv)) {
50483b2c
JD		 3141 if (!SvLEN(sv)) { /* make copy of shared string */
3142 char *pvx = SvPVX(sv);
3143 STRLEN len = SvCUR(sv);
3144 SvGROW(sv, len + 1);
3145 Move(pvx,SvPVX(sv),len,char);
3146 *SvEND(sv) = '\0';
3147 }
463ee0b2 3148 SvIVX(sv) = 0;
79072805
LW		 3149 SvFLAGS(sv) |= SVf_OOK;
3150 }
25da4f38 3151 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3152 delta = ptr - SvPVX(sv);
79072805
LW		 3153 SvLEN(sv) -= delta;
3154 SvCUR(sv) -= delta;
463ee0b2
LW		 3155 SvPVX(sv) += delta;
3156 SvIVX(sv) += delta;
79072805
LW		 3157}
3158
954c1994
GS		 3159/*
3160=for apidoc sv_catpvn
3161
3162Concatenates the string onto the end of the string which is in the SV. The
3163C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3164'set' magic. See C<sv_catpvn_mg>.
3165
3166=cut
3167*/
3168
79072805 3169void
864dbfa3 3170Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3171{
463ee0b2 3172 STRLEN tlen;
748a9306 3173 char *junk;
a0d0e21e 3174
748a9306 3175 junk = SvPV_force(sv, tlen);
463ee0b2 3176 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3177 if (ptr == junk)
3178 ptr = SvPVX(sv);
463ee0b2 3179 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3180 SvCUR(sv) += len;
3181 *SvEND(sv) = '\0';
d41ff1b8 3182 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3183 SvTAINT(sv);
79072805
LW		 3184}
3185
954c1994
GS		 3186/*
3187=for apidoc sv_catpvn_mg
3188
3189Like C<sv_catpvn>, but also handles 'set' magic.
3190
3191=cut
3192*/
3193
79072805 3194void
864dbfa3 3195Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3196{
3197 sv_catpvn(sv,ptr,len);
3198 SvSETMAGIC(sv);
3199}
3200
954c1994
GS		 3201/*
3202=for apidoc sv_catsv
3203
3204Concatenates the string from SV C<ssv> onto the end of the string in SV
3205C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3206
3207=cut
3208*/
3209
ef50df4b 3210void
864dbfa3 3211Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
79072805
LW		 3212{
3213 char *s;
463ee0b2 3214 STRLEN len;
79072805
LW		 3215 if (!sstr)
3216 return;
155aba94 3217 if ((s = SvPV(sstr, len))) {
e84ff256 3218 if (DO_UTF8(sstr)) {
560a288e 3219 sv_utf8_upgrade(dstr);
e84ff256 3220 sv_catpvn(dstr,s,len);
560a288e 3221 SvUTF8_on(dstr);
e84ff256
GS		 3222 }
3223 else
3224 sv_catpvn(dstr,s,len);
560a288e 3225 }
79072805
LW		 3226}
3227
954c1994
GS		 3228/*
3229=for apidoc sv_catsv_mg
3230
3231Like C<sv_catsv>, but also handles 'set' magic.
3232
3233=cut
3234*/
3235
79072805 3236void
864dbfa3 3237Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3238{
3239 sv_catsv(dstr,sstr);
3240 SvSETMAGIC(dstr);
3241}
3242
954c1994
GS		 3243/*
3244=for apidoc sv_catpv
3245
3246Concatenates the string onto the end of the string which is in the SV.
3247Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3248
3249=cut
3250*/
3251
ef50df4b 3252void
864dbfa3 3253Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3254{
3255 register STRLEN len;
463ee0b2 3256 STRLEN tlen;
748a9306 3257 char *junk;
79072805 3258
79072805
LW		 3259 if (!ptr)
3260 return;
748a9306 3261 junk = SvPV_force(sv, tlen);
79072805 3262 len = strlen(ptr);
463ee0b2 3263 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3264 if (ptr == junk)
3265 ptr = SvPVX(sv);
463ee0b2 3266 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3267 SvCUR(sv) += len;
d41ff1b8 3268 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3269 SvTAINT(sv);
79072805
LW		 3270}
3271
954c1994
GS		 3272/*
3273=for apidoc sv_catpv_mg
3274
3275Like C<sv_catpv>, but also handles 'set' magic.
3276
3277=cut
3278*/
3279
ef50df4b 3280void
864dbfa3 3281Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3282{
51c1089b 3283 sv_catpv(sv,ptr);
ef50df4b
GS		 3284 SvSETMAGIC(sv);
3285}
3286
79072805 3287SV *
864dbfa3 3288Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3289{
3290 register SV *sv;
1c846c1f 3291
4561caa4 3292 new_SV(sv);
79072805
LW		 3293 if (len) {
3294 sv_upgrade(sv, SVt_PV);
3295 SvGROW(sv, len + 1);
3296 }
3297 return sv;
3298}
3299
1edc1566 3300/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3301
954c1994
GS		 3302/*
3303=for apidoc sv_magic
3304
3305Adds magic to an SV.
3306
3307=cut
3308*/
3309
79072805 3310void
864dbfa3 3311Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3312{
3313 MAGIC* mg;
1c846c1f 3314
0f15f207
MB		 3315 if (SvREADONLY(sv)) {
3316 dTHR;
3280af22 3317 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3318 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3319 }
4633a7c4 3320 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3321 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3322 if (how == 't')
565764a8 3323 mg->mg_len |= 1;
463ee0b2 3324 return;
748a9306 3325 }
463ee0b2
LW		 3326 }
3327 else {
c6f8c383 3328 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3329 }
79072805
LW		 3330 Newz(702,mg, 1, MAGIC);
3331 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3332
79072805 3333 SvMAGIC(sv) = mg;
c277df42 3334 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3335 mg->mg_obj = obj;
85e6fe83 3336 else {
11343788 3337 dTHR;
8990e307 3338 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3339 mg->mg_flags |= MGf_REFCOUNTED;
3340 }
79072805 3341 mg->mg_type = how;
565764a8 3342 mg->mg_len = namlen;
1edc1566 3343 if (name)
3344 if (namlen >= 0)
3345 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3346 else if (namlen == HEf_SVKEY)
1edc1566 3347 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
1c846c1f 3348
79072805
LW		 3349 switch (how) {
3350 case 0:
22c35a8c 3351 mg->mg_virtual = &PL_vtbl_sv;
79072805 3352 break;
a0d0e21e 3353 case 'A':
22c35a8c 3354 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3355 break;
3356 case 'a':
22c35a8c 3357 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3358 break;
3359 case 'c':
3360 mg->mg_virtual = 0;
3361 break;
79072805 3362 case 'B':
22c35a8c 3363 mg->mg_virtual = &PL_vtbl_bm;
79072805 3364 break;
6cef1e77 3365 case 'D':
22c35a8c 3366 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3367 break;
3368 case 'd':
22c35a8c 3369 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3370 break;
79072805 3371 case 'E':
22c35a8c 3372 mg->mg_virtual = &PL_vtbl_env;
79072805 3373 break;
55497cff 3374 case 'f':
22c35a8c 3375 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3376 break;
79072805 3377 case 'e':
22c35a8c 3378 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3379 break;
93a17b20 3380 case 'g':
22c35a8c 3381 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3382 break;
463ee0b2 3383 case 'I':
22c35a8c 3384 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3385 break;
3386 case 'i':
22c35a8c 3387 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3388 break;
16660edb 3389 case 'k':
22c35a8c 3390 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3391 break;
79072805 3392 case 'L':
a0d0e21e 3393 SvRMAGICAL_on(sv);
93a17b20
LW		 3394 mg->mg_virtual = 0;
3395 break;
3396 case 'l':
22c35a8c 3397 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3398 break;
f93b4edd
MB		 3399#ifdef USE_THREADS
3400 case 'm':
22c35a8c 3401 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3402 break;
3403#endif /* USE_THREADS */
36477c24 3404#ifdef USE_LOCALE_COLLATE
bbce6d69 3405 case 'o':
22c35a8c 3406 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3407 break;
36477c24 3408#endif /* USE_LOCALE_COLLATE */
463ee0b2 3409 case 'P':
22c35a8c 3410 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 3411 break;
3412 case 'p':
a0d0e21e 3413 case 'q':
22c35a8c 3414 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 3415 break;
c277df42 3416 case 'r':
22c35a8c 3417 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 3418 break;
79072805 3419 case 'S':
22c35a8c 3420 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 3421 break;
3422 case 's':
22c35a8c 3423 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 3424 break;
463ee0b2 3425 case 't':
22c35a8c 3426 mg->mg_virtual = &PL_vtbl_taint;
565764a8 3427 mg->mg_len = 1;
463ee0b2 3428 break;
79072805 3429 case 'U':
22c35a8c 3430 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 3431 break;
3432 case 'v':
22c35a8c 3433 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 3434 break;
3435 case 'x':
22c35a8c 3436 mg->mg_virtual = &PL_vtbl_substr;
79072805 3437 break;
5f05dabc 3438 case 'y':
22c35a8c 3439 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 3440 break;
79072805 3441 case '*':
22c35a8c 3442 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 3443 break;
3444 case '#':
22c35a8c 3445 mg->mg_virtual = &PL_vtbl_arylen;
79072805 3446 break;
a0d0e21e 3447 case '.':
22c35a8c 3448 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 3449 break;
810b8aa5
GS		 3450 case '<':
3451 mg->mg_virtual = &PL_vtbl_backref;
3452 break;
4633a7c4
LW		 3453 case '~': /* Reserved for use by extensions not perl internals. */
3454 /* Useful for attaching extension internal data to perl vars. */
3455 /* Note that multiple extensions may clash if magical scalars */
3456 /* etc holding private data from one are passed to another. */
3457 SvRMAGICAL_on(sv);
a0d0e21e 3458 break;
79072805 3459 default:
cea2e8a9 3460 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 3461 }
8990e307
LW		 3462 mg_magical(sv);
3463 if (SvGMAGICAL(sv))
3464 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 3465}
3466
c461cf8f
JH		 3467/*
3468=for apidoc sv_unmagic
3469
3470Removes magic from an SV.
3471
3472=cut
3473*/
3474
463ee0b2 3475int
864dbfa3 3476Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 3477{
3478 MAGIC* mg;
3479 MAGIC** mgp;
91bba347 3480 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 3481 return 0;
3482 mgp = &SvMAGIC(sv);
3483 for (mg = *mgp; mg; mg = *mgp) {
3484 if (mg->mg_type == type) {
3485 MGVTBL* vtbl = mg->mg_virtual;
3486 *mgp = mg->mg_moremagic;
1d7c1841 3487 if (vtbl && vtbl->svt_free)
fc0dc3b3 3488 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 3489 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 3490 if (mg->mg_len >= 0)
1edc1566 3491 Safefree(mg->mg_ptr);
565764a8 3492 else if (mg->mg_len == HEf_SVKEY)
1edc1566 3493 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 3494 if (mg->mg_flags & MGf_REFCOUNTED)
3495 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 3496 Safefree(mg);
3497 }
3498 else
3499 mgp = &mg->mg_moremagic;
79072805 3500 }
91bba347 3501 if (!SvMAGIC(sv)) {
463ee0b2 3502 SvMAGICAL_off(sv);
8990e307 3503 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 3504 }
3505
3506 return 0;
79072805
LW		 3507}
3508
c461cf8f
JH		 3509/*
3510=for apidoc sv_rvweaken
3511
3512Weaken a reference.
3513
3514=cut
3515*/
3516
810b8aa5 3517SV *
864dbfa3 3518Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 3519{
3520 SV *tsv;
3521 if (!SvOK(sv)) /* let undefs pass */
3522 return sv;
3523 if (!SvROK(sv))
cea2e8a9 3524 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5
GS		 3525 else if (SvWEAKREF(sv)) {
3526 dTHR;
3527 if (ckWARN(WARN_MISC))
cea2e8a9 3528 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 3529 return sv;
3530 }
3531 tsv = SvRV(sv);
3532 sv_add_backref(tsv, sv);
3533 SvWEAKREF_on(sv);
1c846c1f 3534 SvREFCNT_dec(tsv);
810b8aa5
GS		 3535 return sv;
3536}
3537
3538STATIC void
cea2e8a9 3539S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 3540{
3541 AV *av;
3542 MAGIC *mg;
3543 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3544 av = (AV*)mg->mg_obj;
3545 else {
3546 av = newAV();
3547 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3548 SvREFCNT_dec(av); /* for sv_magic */
3549 }
3550 av_push(av,sv);
3551}
3552
1c846c1f 3553STATIC void
cea2e8a9 3554S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 3555{
3556 AV *av;
3557 SV **svp;
3558 I32 i;
3559 SV *tsv = SvRV(sv);
3560 MAGIC *mg;
3561 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 3562 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 3563 av = (AV *)mg->mg_obj;
3564 svp = AvARRAY(av);
3565 i = AvFILLp(av);
3566 while (i >= 0) {
3567 if (svp[i] == sv) {
3568 svp[i] = &PL_sv_undef; /* XXX */
3569 }
3570 i--;
3571 }
3572}
3573
954c1994
GS		 3574/*
3575=for apidoc sv_insert
3576
3577Inserts a string at the specified offset/length within the SV. Similar to
3578the Perl substr() function.
3579
3580=cut
3581*/
3582
79072805 3583void
864dbfa3 3584Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 3585{
3586 register char *big;
3587 register char *mid;
3588 register char *midend;
3589 register char *bigend;
3590 register I32 i;
6ff81951 3591 STRLEN curlen;
1c846c1f 3592
79072805 3593
8990e307 3594 if (!bigstr)
cea2e8a9 3595 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 3596 SvPV_force(bigstr, curlen);
60fa28ff 3597 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 3598 if (offset + len > curlen) {
3599 SvGROW(bigstr, offset+len+1);
3600 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3601 SvCUR_set(bigstr, offset+len);
3602 }
79072805 3603
69b47968 3604 SvTAINT(bigstr);
79072805
LW		 3605 i = littlelen - len;
3606 if (i > 0) { /* string might grow */
a0d0e21e 3607 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 3608 mid = big + offset + len;
3609 midend = bigend = big + SvCUR(bigstr);
3610 bigend += i;
3611 *bigend = '\0';
3612 while (midend > mid) /* shove everything down */
3613 *--bigend = *--midend;
3614 Move(little,big+offset,littlelen,char);
3615 SvCUR(bigstr) += i;
3616 SvSETMAGIC(bigstr);
3617 return;
3618 }
3619 else if (i == 0) {
463ee0b2 3620 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 3621 SvSETMAGIC(bigstr);
3622 return;
3623 }
3624
463ee0b2 3625 big = SvPVX(bigstr);
79072805
LW		 3626 mid = big + offset;
3627 midend = mid + len;
3628 bigend = big + SvCUR(bigstr);
3629
3630 if (midend > bigend)
cea2e8a9 3631 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 3632
3633 if (mid - big > bigend - midend) { /* faster to shorten from end */
3634 if (littlelen) {
3635 Move(little, mid, littlelen,char);
3636 mid += littlelen;
3637 }
3638 i = bigend - midend;
3639 if (i > 0) {
3640 Move(midend, mid, i,char);
3641 mid += i;
3642 }
3643 *mid = '\0';
3644 SvCUR_set(bigstr, mid - big);
3645 }
3646 /*SUPPRESS 560*/
155aba94 3647 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 3648 midend -= littlelen;
3649 mid = midend;
3650 sv_chop(bigstr,midend-i);
3651 big += i;
3652 while (i--)
3653 *--midend = *--big;
3654 if (littlelen)
3655 Move(little, mid, littlelen,char);
3656 }
3657 else if (littlelen) {
3658 midend -= littlelen;
3659 sv_chop(bigstr,midend);
3660 Move(little,midend,littlelen,char);
3661 }
3662 else {
3663 sv_chop(bigstr,midend);
3664 }
3665 SvSETMAGIC(bigstr);
3666}
3667
c461cf8f
JH		 3668/*
3669=for apidoc sv_replace
3670
3671Make the first argument a copy of the second, then delete the original.
3672
3673=cut
3674*/
79072805
LW		 3675
3676void
864dbfa3 3677Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805 3678{
0453d815 3679 dTHR;
79072805 3680 U32 refcnt = SvREFCNT(sv);
2213622d 3681 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 3682 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3683 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 3684 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 3685 if (SvMAGICAL(nsv))
3686 mg_free(nsv);
3687 else
3688 sv_upgrade(nsv, SVt_PVMG);
93a17b20 3689 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 3690 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 3691 SvMAGICAL_off(sv);
3692 SvMAGIC(sv) = 0;
3693 }
79072805
LW		 3694 SvREFCNT(sv) = 0;
3695 sv_clear(sv);
477f5d66 3696 assert(!SvREFCNT(sv));
79072805
LW		 3697 StructCopy(nsv,sv,SV);
3698 SvREFCNT(sv) = refcnt;
1edc1566 3699 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 3700 del_SV(nsv);
79072805
LW		 3701}
3702
c461cf8f
JH		 3703/*
3704=for apidoc sv_clear
3705
3706Clear an SV, making it empty. Does not free the memory used by the SV
3707itself.
3708
3709=cut
3710*/
3711
79072805 3712void
864dbfa3 3713Perl_sv_clear(pTHX_ register SV *sv)
79072805 3714{
ec12f114 3715 HV* stash;
79072805
LW		 3716 assert(sv);
3717 assert(SvREFCNT(sv) == 0);
3718
ed6116ce 3719 if (SvOBJECT(sv)) {
e858de61 3720 dTHR;
3280af22 3721 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 3722 djSP;
8ebc5c01 3723 GV* destructor;
837485b6 3724 SV tmpref;
a0d0e21e 3725
837485b6
GS		 3726 Zero(&tmpref, 1, SV);
3727 sv_upgrade(&tmpref, SVt_RV);
3728 SvROK_on(&tmpref);
3729 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3730 SvREFCNT(&tmpref) = 1;
8ebc5c01 3731
4e8e7886
GS		 3732 do {
3733 stash = SvSTASH(sv);
3734 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3735 if (destructor) {
3736 ENTER;
e788e7d3 3737 PUSHSTACKi(PERLSI_DESTROY);
837485b6 3738 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 3739 EXTEND(SP, 2);
3740 PUSHMARK(SP);
837485b6 3741 PUSHs(&tmpref);
4e8e7886 3742 PUTBACK;
864dbfa3
GS		 3743 call_sv((SV*)GvCV(destructor),
3744 G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 3745 SvREFCNT(sv)--;
d3acc0f7 3746 POPSTACK;
3095d977 3747 SPAGAIN;
4e8e7886
GS		 3748 LEAVE;
3749 }
3750 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 3751
837485b6 3752 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 3753
3754 if (SvREFCNT(sv)) {
3755 if (PL_in_clean_objs)
cea2e8a9 3756 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 3757 HvNAME(stash));
3758 /* DESTROY gave object new lease on life */
3759 return;
3760 }
a0d0e21e 3761 }
4e8e7886 3762
a0d0e21e 3763 if (SvOBJECT(sv)) {
4e8e7886 3764 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 3765 SvOBJECT_off(sv); /* Curse the object. */
3766 if (SvTYPE(sv) != SVt_PVIO)
3280af22 3767 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 3768 }
463ee0b2 3769 }
c07a80fd 3770 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 3771 mg_free(sv);
ec12f114 3772 stash = NULL;
79072805 3773 switch (SvTYPE(sv)) {
8990e307 3774 case SVt_PVIO:
df0bd2f4
GS		 3775 if (IoIFP(sv) &&
3776 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 3777 IoIFP(sv) != PerlIO_stdout() &&
3778 IoIFP(sv) != PerlIO_stderr())
93578b34 3779 {
f2b5be74 3780 io_close((IO*)sv, FALSE);
93578b34 3781 }
1d7c1841 3782 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 3783 PerlDir_close(IoDIRP(sv));
1d7c1841 3784 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 3785 Safefree(IoTOP_NAME(sv));
3786 Safefree(IoFMT_NAME(sv));
3787 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 3788 /* FALL THROUGH */
79072805 3789 case SVt_PVBM:
a0d0e21e 3790 goto freescalar;
79072805 3791 case SVt_PVCV:
748a9306 3792 case SVt_PVFM:
85e6fe83 3793 cv_undef((CV*)sv);
a0d0e21e 3794 goto freescalar;
79072805 3795 case SVt_PVHV:
85e6fe83 3796 hv_undef((HV*)sv);
a0d0e21e 3797 break;
79072805 3798 case SVt_PVAV:
85e6fe83 3799 av_undef((AV*)sv);
a0d0e21e 3800 break;
02270b4e
GS		 3801 case SVt_PVLV:
3802 SvREFCNT_dec(LvTARG(sv));
3803 goto freescalar;
a0d0e21e 3804 case SVt_PVGV:
1edc1566 3805 gp_free((GV*)sv);
a0d0e21e 3806 Safefree(GvNAME(sv));
ec12f114
JPC		 3807 /* cannot decrease stash refcount yet, as we might recursively delete
3808 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3809 of stash until current sv is completely gone.
3810 -- JohnPC, 27 Mar 1998 */
3811 stash = GvSTASH(sv);
a0d0e21e 3812 /* FALL THROUGH */
79072805 3813 case SVt_PVMG:
79072805
LW		 3814 case SVt_PVNV:
3815 case SVt_PVIV:
a0d0e21e
LW		 3816 freescalar:
3817 (void)SvOOK_off(sv);
79072805
LW		 3818 /* FALL THROUGH */
3819 case SVt_PV:
a0d0e21e 3820 case SVt_RV:
810b8aa5
GS		 3821 if (SvROK(sv)) {
3822 if (SvWEAKREF(sv))
3823 sv_del_backref(sv);
3824 else
3825 SvREFCNT_dec(SvRV(sv));
3826 }
1edc1566 3827 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 3828 Safefree(SvPVX(sv));
1c846c1f
NIS		 3829 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3830 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3831 SvFAKE_off(sv);
3832 }
79072805 3833 break;
a0d0e21e 3834/*
79072805 3835 case SVt_NV:
79072805 3836 case SVt_IV:
79072805
LW		 3837 case SVt_NULL:
3838 break;
a0d0e21e 3839*/
79072805
LW		 3840 }
3841
3842 switch (SvTYPE(sv)) {
3843 case SVt_NULL:
3844 break;
79072805
LW		 3845 case SVt_IV:
3846 del_XIV(SvANY(sv));
3847 break;
3848 case SVt_NV:
3849 del_XNV(SvANY(sv));
3850 break;
ed6116ce
LW		 3851 case SVt_RV:
3852 del_XRV(SvANY(sv));
3853 break;
79072805
LW		 3854 case SVt_PV:
3855 del_XPV(SvANY(sv));
3856 break;
3857 case SVt_PVIV:
3858 del_XPVIV(SvANY(sv));
3859 break;
3860 case SVt_PVNV:
3861 del_XPVNV(SvANY(sv));
3862 break;
3863 case SVt_PVMG:
3864 del_XPVMG(SvANY(sv));
3865 break;
3866 case SVt_PVLV:
3867 del_XPVLV(SvANY(sv));
3868 break;
3869 case SVt_PVAV:
3870 del_XPVAV(SvANY(sv));
3871 break;
3872 case SVt_PVHV:
3873 del_XPVHV(SvANY(sv));
3874 break;
3875 case SVt_PVCV:
3876 del_XPVCV(SvANY(sv));
3877 break;
3878 case SVt_PVGV:
3879 del_XPVGV(SvANY(sv));
ec12f114
JPC		 3880 /* code duplication for increased performance. */
3881 SvFLAGS(sv) &= SVf_BREAK;
3882 SvFLAGS(sv) |= SVTYPEMASK;
3883 /* decrease refcount of the stash that owns this GV, if any */
3884 if (stash)
3885 SvREFCNT_dec(stash);
3886 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 3887 case SVt_PVBM:
3888 del_XPVBM(SvANY(sv));
3889 break;
3890 case SVt_PVFM:
3891 del_XPVFM(SvANY(sv));
3892 break;
8990e307
LW		 3893 case SVt_PVIO:
3894 del_XPVIO(SvANY(sv));
3895 break;
79072805 3896 }
a0d0e21e 3897 SvFLAGS(sv) &= SVf_BREAK;
8990e307 3898 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 3899}
3900
3901SV *
864dbfa3 3902Perl_sv_newref(pTHX_ SV *sv)
79072805 3903{
463ee0b2 3904 if (sv)
dce16143 3905 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 3906 return sv;
3907}
3908
c461cf8f
JH		 3909/*
3910=for apidoc sv_free
3911
3912Free the memory used by an SV.
3913
3914=cut
3915*/
3916
79072805 3917void
864dbfa3 3918Perl_sv_free(pTHX_ SV *sv)
79072805 3919{
0453d815 3920 dTHR;
dce16143
MB		 3921 int refcount_is_zero;
3922
79072805
LW		 3923 if (!sv)
3924 return;
a0d0e21e
LW		 3925 if (SvREFCNT(sv) == 0) {
3926 if (SvFLAGS(sv) & SVf_BREAK)
3927 return;
3280af22 3928 if (PL_in_clean_all) /* All is fair */
1edc1566 3929 return;
d689ffdd
JP		 3930 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3931 /* make sure SvREFCNT(sv)==0 happens very seldom */
3932 SvREFCNT(sv) = (~(U32)0)/2;
3933 return;
3934 }
0453d815
PM		 3935 if (ckWARN_d(WARN_INTERNAL))
3936 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 3937 return;
3938 }
dce16143
MB		 3939 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3940 if (!refcount_is_zero)
8990e307 3941 return;
463ee0b2
LW		 3942#ifdef DEBUGGING
3943 if (SvTEMP(sv)) {
0453d815 3944 if (ckWARN_d(WARN_DEBUGGING))
f248d071 3945 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 3946 "Attempt to free temp prematurely: SV 0x%"UVxf,
3947 PTR2UV(sv));
79072805 3948 return;
79072805 3949 }
463ee0b2 3950#endif
d689ffdd
JP		 3951 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3952 /* make sure SvREFCNT(sv)==0 happens very seldom */
3953 SvREFCNT(sv) = (~(U32)0)/2;
3954 return;
3955 }
79072805 3956 sv_clear(sv);
477f5d66
CS		 3957 if (! SvREFCNT(sv))
3958 del_SV(sv);
79072805
LW		 3959}
3960
954c1994
GS		 3961/*
3962=for apidoc sv_len
3963
3964Returns the length of the string in the SV. See also C<SvCUR>.
3965
3966=cut
3967*/
3968
79072805 3969STRLEN
864dbfa3 3970Perl_sv_len(pTHX_ register SV *sv)
79072805 3971{
748a9306 3972 char *junk;
463ee0b2 3973 STRLEN len;
79072805
LW		 3974
3975 if (!sv)
3976 return 0;
3977
8990e307 3978 if (SvGMAGICAL(sv))
565764a8 3979 len = mg_length(sv);
8990e307 3980 else
748a9306 3981 junk = SvPV(sv, len);
463ee0b2 3982 return len;
79072805
LW		 3983}
3984
c461cf8f
JH		 3985/*
3986=for apidoc sv_len_utf8
3987
3988Returns the number of characters in the string in an SV, counting wide
3989UTF8 bytes as a single character.
3990
3991=cut
3992*/
3993
a0ed51b3 3994STRLEN
864dbfa3 3995Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 3996{
dfe13c55
GS		 3997 U8 *s;
3998 U8 *send;
a0ed51b3
LW		 3999 STRLEN len;
4000
4001 if (!sv)
4002 return 0;
4003
4004#ifdef NOTYET
4005 if (SvGMAGICAL(sv))
4006 len = mg_length(sv);
4007 else
4008#endif
dfe13c55 4009 s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4010 send = s + len;
4011 len = 0;
4012 while (s < send) {
4013 s += UTF8SKIP(s);
4014 len++;
4015 }
4016 return len;
4017}
4018
4019void
864dbfa3 4020Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4021{
dfe13c55
GS		 4022 U8 *start;
4023 U8 *s;
4024 U8 *send;
a0ed51b3
LW		 4025 I32 uoffset = *offsetp;
4026 STRLEN len;
4027
4028 if (!sv)
4029 return;
4030
dfe13c55 4031 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4032 send = s + len;
4033 while (s < send && uoffset--)
4034 s += UTF8SKIP(s);
bb40f870
GA		 4035 if (s >= send)
4036 s = send;
a0ed51b3
LW		 4037 *offsetp = s - start;
4038 if (lenp) {
4039 I32 ulen = *lenp;
4040 start = s;
4041 while (s < send && ulen--)
4042 s += UTF8SKIP(s);
bb40f870
GA		 4043 if (s >= send)
4044 s = send;
a0ed51b3
LW		 4045 *lenp = s - start;
4046 }
4047 return;
4048}
4049
4050void
864dbfa3 4051Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4052{
dfe13c55
GS		 4053 U8 *s;
4054 U8 *send;
a0ed51b3
LW		 4055 STRLEN len;
4056
4057 if (!sv)
4058 return;
4059
dfe13c55 4060 s = (U8*)SvPV(sv, len);
a0ed51b3 4061 if (len < *offsetp)
cea2e8a9 4062 Perl_croak(aTHX_ "panic: bad byte offset");
a0ed51b3
LW		 4063 send = s + *offsetp;
4064 len = 0;
4065 while (s < send) {
4066 s += UTF8SKIP(s);
4067 ++len;
4068 }
4069 if (s != send) {
0453d815 4070 dTHR;
1c846c1f 4071 if (ckWARN_d(WARN_UTF8))
0453d815 4072 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
a0ed51b3
LW		 4073 --len;
4074 }
4075 *offsetp = len;
4076 return;
4077}
4078
954c1994
GS		 4079/*
4080=for apidoc sv_eq
4081
4082Returns a boolean indicating whether the strings in the two SVs are
4083identical.
4084
4085=cut
4086*/
4087
79072805 4088I32
e01b9e88 4089Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
79072805
LW		 4090{
4091 char *pv1;
463ee0b2 4092 STRLEN cur1;
79072805 4093 char *pv2;
463ee0b2 4094 STRLEN cur2;
e01b9e88
SC		 4095 I32 eq = 0;
4096 bool pv1tmp = FALSE;
4097 bool pv2tmp = FALSE;
79072805 4098
e01b9e88 4099 if (!sv1) {
79072805
LW		 4100 pv1 = "";
4101 cur1 = 0;
4102 }
463ee0b2 4103 else
e01b9e88 4104 pv1 = SvPV(sv1, cur1);
79072805 4105
e01b9e88
SC		 4106 if (!sv2){
4107 pv2 = "";
4108 cur2 = 0;
92d29cee 4109 }
e01b9e88
SC		 4110 else
4111 pv2 = SvPV(sv2, cur2);
79072805 4112
e01b9e88 4113 /* do not utf8ize the comparands as a side-effect */
7bbb0251 4114 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
e01b9e88
SC		 4115 if (SvUTF8(sv1)) {
4116 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4117 pv2tmp = TRUE;
4118 }
4119 else {
4120 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4121 pv1tmp = TRUE;
4122 }
4123 }
79072805 4124
e01b9e88
SC		 4125 if (cur1 == cur2)
4126 eq = memEQ(pv1, pv2, cur1);
4127
4128 if (pv1tmp)
4129 Safefree(pv1);
4130 if (pv2tmp)
4131 Safefree(pv2);
4132
4133 return eq;
79072805
LW		 4134}
4135
954c1994
GS		 4136/*
4137=for apidoc sv_cmp
4138
4139Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4140string in C<sv1> is less than, equal to, or greater than the string in
4141C<sv2>.
4142
4143=cut
4144*/
4145
79072805 4146I32
e01b9e88 4147Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
79072805 4148{
560a288e
GS		 4149 STRLEN cur1, cur2;
4150 char *pv1, *pv2;
1c846c1f 4151 I32 cmp;
e01b9e88
SC		 4152 bool pv1tmp = FALSE;
4153 bool pv2tmp = FALSE;
560a288e 4154
e01b9e88
SC		 4155 if (!sv1) {
4156 pv1 = "";
560a288e
GS		 4157 cur1 = 0;
4158 }
e01b9e88
SC		 4159 else
4160 pv1 = SvPV(sv1, cur1);
560a288e 4161
e01b9e88
SC		 4162 if (!sv2){
4163 pv2 = "";
560a288e
GS		 4164 cur2 = 0;
4165 }
e01b9e88
SC		 4166 else
4167 pv2 = SvPV(sv2, cur2);
79072805 4168
e01b9e88
SC		 4169 /* do not utf8ize the comparands as a side-effect */
4170 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4171 if (SvUTF8(sv1)) {
4172 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4173 pv2tmp = TRUE;
4174 }
4175 else {
4176 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4177 pv1tmp = TRUE;
4178 }
4179 }
79072805 4180
e01b9e88
SC		 4181 if (!cur1) {
4182 cmp = cur2 ? -1 : 0;
4183 } else if (!cur2) {
4184 cmp = 1;
4185 } else {
4186 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4187
4188 if (retval) {
4189 cmp = retval < 0 ? -1 : 1;
4190 } else if (cur1 == cur2) {
4191 cmp = 0;
4192 } else {
4193 cmp = cur1 < cur2 ? -1 : 1;
4194 }
4195 }
16660edb 4196
e01b9e88
SC		 4197 if (pv1tmp)
4198 Safefree(pv1);
4199 if (pv2tmp)
4200 Safefree(pv2);
16660edb 4201
e01b9e88 4202 return cmp;
bbce6d69 4203}
16660edb 4204
c461cf8f
JH		 4205/*
4206=for apidoc sv_cmp_locale
4207
4208Compares the strings in two SVs in a locale-aware manner. See
4209L</sv_cmp_locale>
4210
4211=cut
4212*/
4213
bbce6d69 4214I32
864dbfa3 4215Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4216{
36477c24 4217#ifdef USE_LOCALE_COLLATE
16660edb 4218
bbce6d69 4219 char *pv1, *pv2;
4220 STRLEN len1, len2;
4221 I32 retval;
16660edb 4222
3280af22 4223 if (PL_collation_standard)
bbce6d69 4224 goto raw_compare;
16660edb 4225
bbce6d69 4226 len1 = 0;
8ac85365 4227 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4228 len2 = 0;
8ac85365 4229 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4230
bbce6d69 4231 if (!pv1 || !len1) {
4232 if (pv2 && len2)
4233 return -1;
4234 else
4235 goto raw_compare;
4236 }
4237 else {
4238 if (!pv2 || !len2)
4239 return 1;
4240 }
16660edb 4241
bbce6d69 4242 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4243
bbce6d69 4244 if (retval)
16660edb 4245 return retval < 0 ? -1 : 1;
4246
bbce6d69 4247 /*
4248 * When the result of collation is equality, that doesn't mean
4249 * that there are no differences -- some locales exclude some
4250 * characters from consideration. So to avoid false equalities,
4251 * we use the raw string as a tiebreaker.
4252 */
16660edb 4253
bbce6d69 4254 raw_compare:
4255 /* FALL THROUGH */
16660edb 4256
36477c24 4257#endif /* USE_LOCALE_COLLATE */
16660edb 4258
bbce6d69 4259 return sv_cmp(sv1, sv2);
4260}
79072805 4261
36477c24 4262#ifdef USE_LOCALE_COLLATE
7a4c00b4 4263/*
4264 * Any scalar variable may carry an 'o' magic that contains the
4265 * scalar data of the variable transformed to such a format that
4266 * a normal memory comparison can be used to compare the data
4267 * according to the locale settings.
4268 */
bbce6d69 4269char *
864dbfa3 4270Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4271{
7a4c00b4 4272 MAGIC *mg;
16660edb 4273
8ac85365 4274 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4275 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4276 char *s, *xf;
4277 STRLEN len, xlen;
4278
7a4c00b4 4279 if (mg)
4280 Safefree(mg->mg_ptr);
bbce6d69 4281 s = SvPV(sv, len);
4282 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4283 if (SvREADONLY(sv)) {
4284 SAVEFREEPV(xf);
4285 *nxp = xlen;
3280af22 4286 return xf + sizeof(PL_collation_ix);
ff0cee69 4287 }
7a4c00b4 4288 if (! mg) {
4289 sv_magic(sv, 0, 'o', 0, 0);
4290 mg = mg_find(sv, 'o');
4291 assert(mg);
bbce6d69 4292 }
7a4c00b4 4293 mg->mg_ptr = xf;
565764a8 4294 mg->mg_len = xlen;
7a4c00b4 4295 }
4296 else {
ff0cee69 4297 if (mg) {
4298 mg->mg_ptr = NULL;
565764a8 4299 mg->mg_len = -1;
ff0cee69 4300 }
bbce6d69 4301 }
4302 }
7a4c00b4 4303 if (mg && mg->mg_ptr) {
565764a8 4304 *nxp = mg->mg_len;
3280af22 4305 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4306 }
4307 else {
4308 *nxp = 0;
4309 return NULL;
16660edb 4310 }
79072805
LW		 4311}
4312
36477c24 4313#endif /* USE_LOCALE_COLLATE */
bbce6d69 4314
c461cf8f
JH		 4315/*
4316=for apidoc sv_gets
4317
4318Get a line from the filehandle and store it into the SV, optionally
4319appending to the currently-stored string.
4320
4321=cut
4322*/
4323
79072805 4324char *
864dbfa3 4325Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4326{
aeea060c 4327 dTHR;
c07a80fd 4328 char *rsptr;
4329 STRLEN rslen;
4330 register STDCHAR rslast;
4331 register STDCHAR *bp;
4332 register I32 cnt;
4333 I32 i;
4334
2213622d 4335 SV_CHECK_THINKFIRST(sv);
6fc92669 4336 (void)SvUPGRADE(sv, SVt_PV);
99491443 4337
ff68c719 4338 SvSCREAM_off(sv);
c07a80fd 4339
3280af22 4340 if (RsSNARF(PL_rs)) {
c07a80fd 4341 rsptr = NULL;
4342 rslen = 0;
4343 }
3280af22 4344 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4345 I32 recsize, bytesread;
4346 char *buffer;
4347
4348 /* Grab the size of the record we're getting */
3280af22 4349 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4350 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4351 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4352 /* Go yank in */
4353#ifdef VMS
4354 /* VMS wants read instead of fread, because fread doesn't respect */
4355 /* RMS record boundaries. This is not necessarily a good thing to be */
4356 /* doing, but we've got no other real choice */
4357 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4358#else
4359 bytesread = PerlIO_read(fp, buffer, recsize);
4360#endif
4361 SvCUR_set(sv, bytesread);
e670df4e 4362 buffer[bytesread] = '\0';
5b2b9c68
HM		 4363 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4364 }
3280af22 4365 else if (RsPARA(PL_rs)) {
c07a80fd 4366 rsptr = "\n\n";
4367 rslen = 2;
4368 }
4369 else
3280af22 4370 rsptr = SvPV(PL_rs, rslen);
c07a80fd 4371 rslast = rslen ? rsptr[rslen - 1] : '\0';
4372
3280af22 4373 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4374 do { /* to make sure file boundaries work right */
760ac839 4375 if (PerlIO_eof(fp))
a0d0e21e 4376 return 0;
760ac839 4377 i = PerlIO_getc(fp);
79072805 4378 if (i != '\n') {
a0d0e21e
LW		 4379 if (i == -1)
4380 return 0;
760ac839 4381 PerlIO_ungetc(fp,i);
79072805
LW		 4382 break;
4383 }
4384 } while (i != EOF);
4385 }
c07a80fd 4386
760ac839
LW		 4387 /* See if we know enough about I/O mechanism to cheat it ! */
4388
4389 /* This used to be #ifdef test - it is made run-time test for ease
1c846c1f 4390 of abstracting out stdio interface. One call should be cheap
760ac839
LW		 4391 enough here - and may even be a macro allowing compile
4392 time optimization.
4393 */
4394
4395 if (PerlIO_fast_gets(fp)) {
4396
4397 /*
4398 * We're going to steal some values from the stdio struct
4399 * and put EVERYTHING in the innermost loop into registers.
4400 */
4401 register STDCHAR *ptr;
4402 STRLEN bpx;
4403 I32 shortbuffered;
4404
16660edb 4405#if defined(VMS) && defined(PERLIO_IS_STDIO)
4406 /* An ungetc()d char is handled separately from the regular
4407 * buffer, so we getc() it back out and stuff it in the buffer.
4408 */
4409 i = PerlIO_getc(fp);
4410 if (i == EOF) return 0;
4411 *(--((*fp)->_ptr)) = (unsigned char) i;
4412 (*fp)->_cnt++;
4413#endif
c07a80fd 4414
c2960299 4415 /* Here is some breathtakingly efficient cheating */
c07a80fd 4416
a20bf0c3 4417 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 4418 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 4419 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4420 if (cnt > 80 && SvLEN(sv) > append) {
4421 shortbuffered = cnt - SvLEN(sv) + append + 1;
4422 cnt -= shortbuffered;
4423 }
4424 else {
4425 shortbuffered = 0;
bbce6d69 4426 /* remember that cnt can be negative */
4427 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 4428 }
4429 }
4430 else
4431 shortbuffered = 0;
c07a80fd 4432 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 4433 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 4434 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4435 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 4436 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4437 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4438 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4439 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 4440 for (;;) {
4441 screamer:
93a17b20 4442 if (cnt > 0) {
c07a80fd 4443 if (rslen) {
760ac839
LW		 4444 while (cnt > 0) { /* this | eat */
4445 cnt--;
c07a80fd 4446 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4447 goto thats_all_folks; /* screams | sed :-) */
4448 }
4449 }
4450 else {
1c846c1f
NIS		 4451 Copy(ptr, bp, cnt, char); /* this | eat */
4452 bp += cnt; /* screams | dust */
c07a80fd 4453 ptr += cnt; /* louder | sed :-) */
a5f75d66 4454 cnt = 0;
93a17b20 4455 }
79072805
LW		 4456 }
4457
748a9306 4458 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 4459 cnt = shortbuffered;
4460 shortbuffered = 0;
c07a80fd 4461 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4462 SvCUR_set(sv, bpx);
4463 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 4464 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 4465 continue;
4466 }
4467
16660edb 4468 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4469 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4470 PTR2UV(ptr),(long)cnt));
a20bf0c3 4471 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 4472 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4473 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4474 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4475 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
1c846c1f 4476 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 4477 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4478 another abstraction. */
760ac839 4479 i = PerlIO_getc(fp); /* get more characters */
16660edb 4480 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4481 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4482 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4483 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 4484 cnt = PerlIO_get_cnt(fp);
4485 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 4486 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4487 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 4488
748a9306
LW		 4489 if (i == EOF) /* all done for ever? */
4490 goto thats_really_all_folks;
4491
c07a80fd 4492 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4493 SvCUR_set(sv, bpx);
4494 SvGROW(sv, bpx + cnt + 2);
c07a80fd 4495 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4496
760ac839 4497 *bp++ = i; /* store character from PerlIO_getc */
79072805 4498
c07a80fd 4499 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 4500 goto thats_all_folks;
79072805
LW		 4501 }
4502
4503thats_all_folks:
c07a80fd 4504 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 4505 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 4506 goto screamer; /* go back to the fray */
79072805
LW		 4507thats_really_all_folks:
4508 if (shortbuffered)
4509 cnt += shortbuffered;
16660edb 4510 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4511 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 4512 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 4513 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4514 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4515 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4516 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 4517 *bp = '\0';
760ac839 4518 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 4519 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 4520 "Screamer: done, len=%ld, string=|%.*s|\n",
4521 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 4522 }
4523 else
79072805 4524 {
4d2c4e07 4525#ifndef EPOC
760ac839 4526 /*The big, slow, and stupid way */
c07a80fd 4527 STDCHAR buf[8192];
4d2c4e07
OF		 4528#else
4529 /* Need to work around EPOC SDK features */
4530 /* On WINS: MS VC5 generates calls to _chkstk, */
4531 /* if a `large' stack frame is allocated */
4532 /* gcc on MARM does not generate calls like these */
4533 STDCHAR buf[1024];
4534#endif
79072805 4535
760ac839 4536screamer2:
c07a80fd 4537 if (rslen) {
760ac839
LW		 4538 register STDCHAR *bpe = buf + sizeof(buf);
4539 bp = buf;
4540 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4541 ; /* keep reading */
4542 cnt = bp - buf;
c07a80fd 4543 }
4544 else {
760ac839 4545 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 4546 /* Accomodate broken VAXC compiler, which applies U8 cast to
4547 * both args of ?: operator, causing EOF to change into 255
4548 */
4549 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 4550 }
79072805
LW		 4551
4552 if (append)
760ac839 4553 sv_catpvn(sv, (char *) buf, cnt);
79072805 4554 else
760ac839 4555 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 4556
4557 if (i != EOF && /* joy */
4558 (!rslen ||
4559 SvCUR(sv) < rslen ||
36477c24 4560 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 4561 {
4562 append = -1;
63e4d877
CS		 4563 /*
4564 * If we're reading from a TTY and we get a short read,
4565 * indicating that the user hit his EOF character, we need
4566 * to notice it now, because if we try to read from the TTY
4567 * again, the EOF condition will disappear.
4568 *
4569 * The comparison of cnt to sizeof(buf) is an optimization
4570 * that prevents unnecessary calls to feof().
4571 *
4572 * - jik 9/25/96
4573 */
4574 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4575 goto screamer2;
79072805
LW		 4576 }
4577 }
4578
1c846c1f 4579 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 4580 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 4581 i = PerlIO_getc(fp);
79072805 4582 if (i != '\n') {
760ac839 4583 PerlIO_ungetc(fp,i);
79072805
LW		 4584 break;
4585 }
4586 }
4587 }
c07a80fd 4588
4589 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 4590}
4591
760ac839 4592
954c1994
GS		 4593/*
4594=for apidoc sv_inc
4595
4596Auto-increment of the value in the SV.
4597
4598=cut
4599*/
4600
79072805 4601void
864dbfa3 4602Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 4603{
4604 register char *d;
463ee0b2 4605 int flags;
79072805
LW		 4606
4607 if (!sv)
4608 return;
b23a5f78
GB		 4609 if (SvGMAGICAL(sv))
4610 mg_get(sv);
ed6116ce 4611 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4612 if (SvREADONLY(sv)) {
4613 dTHR;
3280af22 4614 if (PL_curcop != &PL_compiling)
cea2e8a9 4615 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4616 }
a0d0e21e 4617 if (SvROK(sv)) {
b5be31e9 4618 IV i;
9e7bc3e8
JD		 4619 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4620 return;
56431972 4621 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4622 sv_unref(sv);
4623 sv_setiv(sv, i);
a0d0e21e 4624 }
ed6116ce 4625 }
8990e307 4626 flags = SvFLAGS(sv);
8990e307 4627 if (flags & SVp_NOK) {
a0d0e21e 4628 (void)SvNOK_only(sv);
55497cff 4629 SvNVX(sv) += 1.0;
4630 return;
4631 }
4632 if (flags & SVp_IOK) {
25da4f38
IZ		 4633 if (SvIsUV(sv)) {
4634 if (SvUVX(sv) == UV_MAX)
65202027 4635 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 4636 else
4637 (void)SvIOK_only_UV(sv);
4638 ++SvUVX(sv);
4639 } else {
4640 if (SvIVX(sv) == IV_MAX)
65202027 4641 sv_setnv(sv, (NV)IV_MAX + 1.0);
25da4f38
IZ		 4642 else {
4643 (void)SvIOK_only(sv);
4644 ++SvIVX(sv);
1c846c1f 4645 }
55497cff 4646 }
79072805
LW		 4647 return;
4648 }
8990e307 4649 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4633a7c4
LW		 4650 if ((flags & SVTYPEMASK) < SVt_PVNV)
4651 sv_upgrade(sv, SVt_NV);
463ee0b2 4652 SvNVX(sv) = 1.0;
a0d0e21e 4653 (void)SvNOK_only(sv);
79072805
LW		 4654 return;
4655 }
463ee0b2 4656 d = SvPVX(sv);
79072805
LW		 4657 while (isALPHA(*d)) d++;
4658 while (isDIGIT(*d)) d++;
4659 if (*d) {
097ee67d 4660 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
79072805
LW		 4661 return;
4662 }
4663 d--;
463ee0b2 4664 while (d >= SvPVX(sv)) {
79072805
LW		 4665 if (isDIGIT(*d)) {
4666 if (++*d <= '9')
4667 return;
4668 *(d--) = '0';
4669 }
4670 else {
9d116dd7
JH		 4671#ifdef EBCDIC
4672 /* MKS: The original code here died if letters weren't consecutive.
4673 * at least it didn't have to worry about non-C locales. The
4674 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
1c846c1f 4675 * arranged in order (although not consecutively) and that only
9d116dd7
JH		 4676 * [A-Za-z] are accepted by isALPHA in the C locale.
4677 */
4678 if (*d != 'z' && *d != 'Z') {
4679 do { ++*d; } while (!isALPHA(*d));
4680 return;
4681 }
4682 *(d--) -= 'z' - 'a';
4683#else
79072805
LW		 4684 ++*d;
4685 if (isALPHA(*d))
4686 return;
4687 *(d--) -= 'z' - 'a' + 1;
9d116dd7 4688#endif
79072805
LW		 4689 }
4690 }
4691 /* oh,oh, the number grew */
4692 SvGROW(sv, SvCUR(sv) + 2);
4693 SvCUR(sv)++;
463ee0b2 4694 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 4695 *d = d[-1];
4696 if (isDIGIT(d[1]))
4697 *d = '1';
4698 else
4699 *d = d[1];
4700}
4701
954c1994
GS		 4702/*
4703=for apidoc sv_dec
4704
4705Auto-decrement of the value in the SV.
4706
4707=cut
4708*/
4709
79072805 4710void
864dbfa3 4711Perl_sv_dec(pTHX_ register SV *sv)
79072805 4712{
463ee0b2
LW		 4713 int flags;
4714
79072805
LW		 4715 if (!sv)
4716 return;
b23a5f78
GB		 4717 if (SvGMAGICAL(sv))
4718 mg_get(sv);
ed6116ce 4719 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4720 if (SvREADONLY(sv)) {
4721 dTHR;
3280af22 4722 if (PL_curcop != &PL_compiling)
cea2e8a9 4723 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4724 }
a0d0e21e 4725 if (SvROK(sv)) {
b5be31e9 4726 IV i;
9e7bc3e8
JD		 4727 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4728 return;
56431972 4729 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4730 sv_unref(sv);
4731 sv_setiv(sv, i);
a0d0e21e 4732 }
ed6116ce 4733 }
8990e307 4734 flags = SvFLAGS(sv);
8990e307 4735 if (flags & SVp_NOK) {
463ee0b2 4736 SvNVX(sv) -= 1.0;
a0d0e21e 4737 (void)SvNOK_only(sv);
79072805
LW		 4738 return;
4739 }
55497cff 4740 if (flags & SVp_IOK) {
25da4f38
IZ		 4741 if (SvIsUV(sv)) {
4742 if (SvUVX(sv) == 0) {
4743 (void)SvIOK_only(sv);
4744 SvIVX(sv) = -1;
4745 }
4746 else {
4747 (void)SvIOK_only_UV(sv);
4748 --SvUVX(sv);
1c846c1f 4749 }
25da4f38
IZ		 4750 } else {
4751 if (SvIVX(sv) == IV_MIN)
65202027 4752 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 4753 else {
4754 (void)SvIOK_only(sv);
4755 --SvIVX(sv);
1c846c1f 4756 }
55497cff 4757 }
4758 return;
4759 }
8990e307 4760 if (!(flags & SVp_POK)) {
4633a7c4
LW		 4761 if ((flags & SVTYPEMASK) < SVt_PVNV)
4762 sv_upgrade(sv, SVt_NV);
463ee0b2 4763 SvNVX(sv) = -1.0;
a0d0e21e 4764 (void)SvNOK_only(sv);
79072805
LW		 4765 return;
4766 }
097ee67d 4767 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 4768}
4769
954c1994
GS		 4770/*
4771=for apidoc sv_mortalcopy
4772
4773Creates a new SV which is a copy of the original SV. The new SV is marked
4774as mortal.
4775
4776=cut
4777*/
4778
79072805
LW		 4779/* Make a string that will exist for the duration of the expression
4780 * evaluation. Actually, it may have to last longer than that, but
4781 * hopefully we won't free it until it has been assigned to a
4782 * permanent location. */
4783
4784SV *
864dbfa3 4785Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 4786{
11343788 4787 dTHR;
463ee0b2 4788 register SV *sv;
79072805 4789
4561caa4 4790 new_SV(sv);
79072805 4791 sv_setsv(sv,oldstr);
677b06e3
GS		 4792 EXTEND_MORTAL(1);
4793 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 4794 SvTEMP_on(sv);
4795 return sv;
4796}
4797
954c1994
GS		 4798/*
4799=for apidoc sv_newmortal
4800
4801Creates a new SV which is mortal. The reference count of the SV is set to 1.
4802
4803=cut
4804*/
4805
8990e307 4806SV *
864dbfa3 4807Perl_sv_newmortal(pTHX)
8990e307 4808{
11343788 4809 dTHR;
8990e307
LW		 4810 register SV *sv;
4811
4561caa4 4812 new_SV(sv);
8990e307 4813 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 4814 EXTEND_MORTAL(1);
4815 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 4816 return sv;
4817}
4818
954c1994
GS		 4819/*
4820=for apidoc sv_2mortal
4821
4822Marks an SV as mortal. The SV will be destroyed when the current context
4823ends.
4824
4825=cut
4826*/
4827
79072805
LW		 4828/* same thing without the copying */
4829
4830SV *
864dbfa3 4831Perl_sv_2mortal(pTHX_ register SV *sv)
79072805 4832{
11343788 4833 dTHR;
79072805
LW		 4834 if (!sv)
4835 return sv;
d689ffdd 4836 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 4837 return sv;
677b06e3
GS		 4838 EXTEND_MORTAL(1);
4839 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 4840 SvTEMP_on(sv);
79072805
LW		 4841 return sv;
4842}
4843
954c1994
GS		 4844/*
4845=for apidoc newSVpv
4846
4847Creates a new SV and copies a string into it. The reference count for the
4848SV is set to 1. If C<len> is zero, Perl will compute the length using
4849strlen(). For efficiency, consider using C<newSVpvn> instead.
4850
4851=cut
4852*/
4853
79072805 4854SV *
864dbfa3 4855Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 4856{
463ee0b2 4857 register SV *sv;
79072805 4858
4561caa4 4859 new_SV(sv);
79072805
LW		 4860 if (!len)
4861 len = strlen(s);
4862 sv_setpvn(sv,s,len);
4863 return sv;
4864}
4865
954c1994
GS		 4866/*
4867=for apidoc newSVpvn
4868
4869Creates a new SV and copies a string into it. The reference count for the
1c846c1f 4870SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
954c1994
GS		 4871string. You are responsible for ensuring that the source string is at least
4872C<len> bytes long.
4873
4874=cut
4875*/
4876
9da1e3b5 4877SV *
864dbfa3 4878Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 4879{
4880 register SV *sv;
4881
4882 new_SV(sv);
9da1e3b5
MUN		 4883 sv_setpvn(sv,s,len);
4884 return sv;
4885}
4886
1c846c1f
NIS		 4887/*
4888=for apidoc newSVpvn_share
4889
4890Creates a new SV and populates it with a string from
4891the string table. Turns on READONLY and FAKE.
4892The idea here is that as string table is used for shared hash
4893keys these strings will have SvPVX == HeKEY and hash lookup
4894will avoid string compare.
4895
4896=cut
4897*/
4898
4899SV *
4900Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4901{
4902 register SV *sv;
4903 if (!hash)
4904 PERL_HASH(hash, src, len);
4905 new_SV(sv);
4906 sv_upgrade(sv, SVt_PVIV);
4907 SvPVX(sv) = sharepvn(src, len, hash);
4908 SvCUR(sv) = len;
4909 SvUVX(sv) = hash;
4910 SvLEN(sv) = 0;
4911 SvREADONLY_on(sv);
4912 SvFAKE_on(sv);
4913 SvPOK_on(sv);
4914 return sv;
4915}
4916
cea2e8a9 4917#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 4918SV *
cea2e8a9 4919Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 4920{
cea2e8a9 4921 dTHX;
46fc3d4c 4922 register SV *sv;
4923 va_list args;
46fc3d4c 4924 va_start(args, pat);
c5be433b 4925 sv = vnewSVpvf(pat, &args);
46fc3d4c 4926 va_end(args);
4927 return sv;
4928}
cea2e8a9 4929#endif
46fc3d4c 4930
954c1994
GS		 4931/*
4932=for apidoc newSVpvf
4933
4934Creates a new SV an initialize it with the string formatted like
4935C<sprintf>.
4936
4937=cut
4938*/
4939
cea2e8a9
GS		 4940SV *
4941Perl_newSVpvf(pTHX_ const char* pat, ...)
4942{
4943 register SV *sv;
4944 va_list args;
cea2e8a9 4945 va_start(args, pat);
c5be433b 4946 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 4947 va_end(args);
4948 return sv;
4949}
46fc3d4c 4950
79072805 4951SV *
c5be433b
GS		 4952Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4953{
4954 register SV *sv;
4955 new_SV(sv);
4956 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4957 return sv;
4958}
4959
954c1994
GS		 4960/*
4961=for apidoc newSVnv
4962
4963Creates a new SV and copies a floating point value into it.
4964The reference count for the SV is set to 1.
4965
4966=cut
4967*/
4968
c5be433b 4969SV *
65202027 4970Perl_newSVnv(pTHX_ NV n)
79072805 4971{
463ee0b2 4972 register SV *sv;
79072805 4973
4561caa4 4974 new_SV(sv);
79072805
LW		 4975 sv_setnv(sv,n);
4976 return sv;
4977}
4978
954c1994
GS		 4979/*
4980=for apidoc newSViv
4981
4982Creates a new SV and copies an integer into it. The reference count for the
4983SV is set to 1.
4984
4985=cut
4986*/
4987
79072805 4988SV *
864dbfa3 4989Perl_newSViv(pTHX_ IV i)
79072805 4990{
463ee0b2 4991 register SV *sv;
79072805 4992
4561caa4 4993 new_SV(sv);
79072805
LW		 4994 sv_setiv(sv,i);
4995 return sv;
4996}
4997
954c1994 4998/*
1a3327fb
JH		 4999=for apidoc newSVuv
5000
5001Creates a new SV and copies an unsigned integer into it.
5002The reference count for the SV is set to 1.
5003
5004=cut
5005*/
5006
5007SV *
5008Perl_newSVuv(pTHX_ UV u)
5009{
5010 register SV *sv;
5011
5012 new_SV(sv);
5013 sv_setuv(sv,u);
5014 return sv;
5015}
5016
5017/*
954c1994
GS		 5018=for apidoc newRV_noinc
5019
5020Creates an RV wrapper for an SV. The reference count for the original
5021SV is B<not> incremented.
5022
5023=cut
5024*/
5025
2304df62 5026SV *
864dbfa3 5027Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62 5028{
11343788 5029 dTHR;
2304df62
AD		 5030 register SV *sv;
5031
4561caa4 5032 new_SV(sv);
2304df62 5033 sv_upgrade(sv, SVt_RV);
76e3520e 5034 SvTEMP_off(tmpRef);
d689ffdd 5035 SvRV(sv) = tmpRef;
2304df62 5036 SvROK_on(sv);
2304df62
AD		 5037 return sv;
5038}
5039
954c1994 5040/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5041SV *
864dbfa3 5042Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5043{
5f6447b6 5044 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5045}
5f05dabc 5046
954c1994
GS		 5047/*
5048=for apidoc newSVsv
5049
5050Creates a new SV which is an exact duplicate of the original SV.
5051
5052=cut
5053*/
5054
79072805
LW		 5055/* make an exact duplicate of old */
5056
5057SV *
864dbfa3 5058Perl_newSVsv(pTHX_ register SV *old)
79072805 5059{
0453d815 5060 dTHR;
463ee0b2 5061 register SV *sv;
79072805
LW		 5062
5063 if (!old)
5064 return Nullsv;
8990e307 5065 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5066 if (ckWARN_d(WARN_INTERNAL))
5067 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5068 return Nullsv;
5069 }
4561caa4 5070 new_SV(sv);
ff68c719 5071 if (SvTEMP(old)) {
5072 SvTEMP_off(old);
463ee0b2 5073 sv_setsv(sv,old);
ff68c719 5074 SvTEMP_on(old);
79072805
LW		 5075 }
5076 else
463ee0b2
LW		 5077 sv_setsv(sv,old);
5078 return sv;
79072805
LW		 5079}
5080
5081void
864dbfa3 5082Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5083{
5084 register HE *entry;
5085 register GV *gv;
5086 register SV *sv;
5087 register I32 i;
5088 register PMOP *pm;
5089 register I32 max;
4802d5d7 5090 char todo[PERL_UCHAR_MAX+1];
79072805 5091
49d8d3a1
MB		 5092 if (!stash)
5093 return;
5094
79072805
LW		 5095 if (!*s) { /* reset ?? searches */
5096 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5097 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5098 }
5099 return;
5100 }
5101
5102 /* reset variables */
5103
5104 if (!HvARRAY(stash))
5105 return;
463ee0b2
LW		 5106
5107 Zero(todo, 256, char);
79072805 5108 while (*s) {
4802d5d7 5109 i = (unsigned char)*s;
79072805
LW		 5110 if (s[1] == '-') {
5111 s += 2;
5112 }
4802d5d7 5113 max = (unsigned char)*s++;
79072805 5114 for ( ; i <= max; i++) {
463ee0b2
LW		 5115 todo[i] = 1;
5116 }
a0d0e21e 5117 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5118 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5119 entry;
5120 entry = HeNEXT(entry))
5121 {
1edc1566 5122 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5123 continue;
1edc1566 5124 gv = (GV*)HeVAL(entry);
79072805 5125 sv = GvSV(gv);
9e35f4b3
GS		 5126 if (SvTHINKFIRST(sv)) {
5127 if (!SvREADONLY(sv) && SvROK(sv))
5128 sv_unref(sv);
5129 continue;
5130 }
a0d0e21e 5131 (void)SvOK_off(sv);
79072805
LW		 5132 if (SvTYPE(sv) >= SVt_PV) {
5133 SvCUR_set(sv, 0);
463ee0b2
LW		 5134 if (SvPVX(sv) != Nullch)
5135 *SvPVX(sv) = '\0';
44a8e56a 5136 SvTAINT(sv);
79072805
LW		 5137 }
5138 if (GvAV(gv)) {
5139 av_clear(GvAV(gv));
5140 }
44a8e56a 5141 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5142 hv_clear(GvHV(gv));
ed79a026 5143#if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
3280af22 5144 if (gv == PL_envgv)
79072805 5145 environ[0] = Nullch;
a0d0e21e 5146#endif
79072805
LW		 5147 }
5148 }
5149 }
5150 }
5151}
5152
46fc3d4c 5153IO*
864dbfa3 5154Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5155{
5156 IO* io;
5157 GV* gv;
2d8e6c8d 5158 STRLEN n_a;
46fc3d4c 5159
5160 switch (SvTYPE(sv)) {
5161 case SVt_PVIO:
5162 io = (IO*)sv;
5163 break;
5164 case SVt_PVGV:
5165 gv = (GV*)sv;
5166 io = GvIO(gv);
5167 if (!io)
cea2e8a9 5168 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5169 break;
5170 default:
5171 if (!SvOK(sv))
cea2e8a9 5172 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5173 if (SvROK(sv))
5174 return sv_2io(SvRV(sv));
2d8e6c8d 5175 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5176 if (gv)
5177 io = GvIO(gv);
5178 else
5179 io = 0;
5180 if (!io)
cea2e8a9 5181 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5182 break;
5183 }
5184 return io;
5185}
5186
79072805 5187CV *
864dbfa3 5188Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5189{
5190 GV *gv;
5191 CV *cv;
2d8e6c8d 5192 STRLEN n_a;
79072805
LW		 5193
5194 if (!sv)
93a17b20 5195 return *gvp = Nullgv, Nullcv;
79072805 5196 switch (SvTYPE(sv)) {
79072805
LW		 5197 case SVt_PVCV:
5198 *st = CvSTASH(sv);
5199 *gvp = Nullgv;
5200 return (CV*)sv;
5201 case SVt_PVHV:
5202 case SVt_PVAV:
5203 *gvp = Nullgv;
5204 return Nullcv;
8990e307
LW		 5205 case SVt_PVGV:
5206 gv = (GV*)sv;
a0d0e21e 5207 *gvp = gv;
8990e307
LW		 5208 *st = GvESTASH(gv);
5209 goto fix_gv;
5210
79072805 5211 default:
a0d0e21e
LW		 5212 if (SvGMAGICAL(sv))
5213 mg_get(sv);
5214 if (SvROK(sv)) {
0f4592ef 5215 dTHR;
f5284f61
IZ		 5216 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5217 tryAMAGICunDEREF(to_cv);
5218
62f274bf
GS		 5219 sv = SvRV(sv);
5220 if (SvTYPE(sv) == SVt_PVCV) {
5221 cv = (CV*)sv;
5222 *gvp = Nullgv;
5223 *st = CvSTASH(cv);
5224 return cv;
5225 }
5226 else if(isGV(sv))
5227 gv = (GV*)sv;
5228 else
cea2e8a9 5229 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5230 }
62f274bf 5231 else if (isGV(sv))
79072805
LW		 5232 gv = (GV*)sv;
5233 else
2d8e6c8d 5234 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5235 *gvp = gv;
5236 if (!gv)
5237 return Nullcv;
5238 *st = GvESTASH(gv);
8990e307 5239 fix_gv:
8ebc5c01 5240 if (lref && !GvCVu(gv)) {
4633a7c4 5241 SV *tmpsv;
748a9306 5242 ENTER;
4633a7c4 5243 tmpsv = NEWSV(704,0);
16660edb 5244 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5245 /* XXX this is probably not what they think they're getting.
5246 * It has the same effect as "sub name;", i.e. just a forward
5247 * declaration! */
774d564b 5248 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5249 newSVOP(OP_CONST, 0, tmpsv),
5250 Nullop,
8990e307 5251 Nullop);
748a9306 5252 LEAVE;
8ebc5c01 5253 if (!GvCVu(gv))
cea2e8a9 5254 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5255 }
8ebc5c01 5256 return GvCVu(gv);
79072805
LW		 5257 }
5258}
5259
c461cf8f
JH		 5260/*
5261=for apidoc sv_true
5262
5263Returns true if the SV has a true value by Perl's rules.
5264
5265=cut
5266*/
5267
79072805 5268I32
864dbfa3 5269Perl_sv_true(pTHX_ register SV *sv)
79072805 5270{
4e35701f 5271 dTHR;
8990e307
LW		 5272 if (!sv)
5273 return 0;
79072805 5274 if (SvPOK(sv)) {
4e35701f
NIS		 5275 register XPV* tXpv;
5276 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5277 (tXpv->xpv_cur > 1 ||
4e35701f 5278 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5279 return 1;
5280 else
5281 return 0;
5282 }
5283 else {
5284 if (SvIOK(sv))
463ee0b2 5285 return SvIVX(sv) != 0;
79072805
LW		 5286 else {
5287 if (SvNOK(sv))
463ee0b2 5288 return SvNVX(sv) != 0.0;
79072805 5289 else
463ee0b2 5290 return sv_2bool(sv);
79072805
LW		 5291 }
5292 }
5293}
79072805 5294
ff68c719 5295IV
864dbfa3 5296Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5297{
25da4f38
IZ		 5298 if (SvIOK(sv)) {
5299 if (SvIsUV(sv))
5300 return (IV)SvUVX(sv);
ff68c719 5301 return SvIVX(sv);
25da4f38 5302 }
ff68c719 5303 return sv_2iv(sv);
85e6fe83 5304}
85e6fe83 5305
ff68c719 5306UV
864dbfa3 5307Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 5308{
25da4f38
IZ		 5309 if (SvIOK(sv)) {
5310 if (SvIsUV(sv))
5311 return SvUVX(sv);
5312 return (UV)SvIVX(sv);
5313 }
ff68c719 5314 return sv_2uv(sv);
5315}
85e6fe83 5316
65202027 5317NV
864dbfa3 5318Perl_sv_nv(pTHX_ register SV *sv)
79072805 5319{
ff68c719 5320 if (SvNOK(sv))
5321 return SvNVX(sv);
5322 return sv_2nv(sv);
79072805 5323}
79072805 5324
79072805 5325char *
864dbfa3 5326Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 5327{
5328 STRLEN n_a;
5329
5330 if (SvPOK(sv))
5331 return SvPVX(sv);
5332
5333 return sv_2pv(sv, &n_a);
5334}
5335
5336char *
864dbfa3 5337Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 5338{
85e6fe83
LW		 5339 if (SvPOK(sv)) {
5340 *lp = SvCUR(sv);
a0d0e21e 5341 return SvPVX(sv);
85e6fe83 5342 }
463ee0b2 5343 return sv_2pv(sv, lp);
79072805 5344}
79072805 5345
c461cf8f
JH		 5346/*
5347=for apidoc sv_pvn_force
5348
5349Get a sensible string out of the SV somehow.
5350
5351=cut
5352*/
5353
a0d0e21e 5354char *
864dbfa3 5355Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 5356{
5357 char *s;
5358
6fc92669
GS		 5359 if (SvTHINKFIRST(sv) && !SvROK(sv))
5360 sv_force_normal(sv);
1c846c1f 5361
a0d0e21e
LW		 5362 if (SvPOK(sv)) {
5363 *lp = SvCUR(sv);
5364 }
5365 else {
748a9306 5366 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6fc92669 5367 dTHR;
cea2e8a9 5368 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 5369 PL_op_name[PL_op->op_type]);
a0d0e21e 5370 }
4633a7c4
LW		 5371 else
5372 s = sv_2pv(sv, lp);
a0d0e21e
LW		 5373 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5374 STRLEN len = *lp;
1c846c1f 5375
a0d0e21e
LW		 5376 if (SvROK(sv))
5377 sv_unref(sv);
5378 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5379 SvGROW(sv, len + 1);
5380 Move(s,SvPVX(sv),len,char);
5381 SvCUR_set(sv, len);
5382 *SvEND(sv) = '\0';
5383 }
5384 if (!SvPOK(sv)) {
5385 SvPOK_on(sv); /* validate pointer */
5386 SvTAINT(sv);
1d7c1841
GS		 5387 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5388 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 5389 }
5390 }
5391 return SvPVX(sv);
5392}
5393
5394char *
7340a771
GS		 5395Perl_sv_pvbyte(pTHX_ SV *sv)
5396{
5397 return sv_pv(sv);
5398}
5399
5400char *
5401Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5402{
5403 return sv_pvn(sv,lp);
5404}
5405
5406char *
5407Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5408{
5409 return sv_pvn_force(sv,lp);
5410}
5411
5412char *
5413Perl_sv_pvutf8(pTHX_ SV *sv)
5414{
560a288e 5415 sv_utf8_upgrade(sv);
7340a771
GS		 5416 return sv_pv(sv);
5417}
5418
5419char *
5420Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5421{
560a288e 5422 sv_utf8_upgrade(sv);
7340a771
GS		 5423 return sv_pvn(sv,lp);
5424}
5425
c461cf8f
JH		 5426/*
5427=for apidoc sv_pvutf8n_force
5428
5429Get a sensible UTF8-encoded string out of the SV somehow. See
5430L</sv_pvn_force>.
5431
5432=cut
5433*/
5434
7340a771
GS		 5435char *
5436Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5437{
560a288e 5438 sv_utf8_upgrade(sv);
7340a771
GS		 5439 return sv_pvn_force(sv,lp);
5440}
5441
c461cf8f
JH		 5442/*
5443=for apidoc sv_reftype
5444
5445Returns a string describing what the SV is a reference to.
5446
5447=cut
5448*/
5449
7340a771 5450char *
864dbfa3 5451Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 5452{
5453 if (ob && SvOBJECT(sv))
5454 return HvNAME(SvSTASH(sv));
5455 else {
5456 switch (SvTYPE(sv)) {
5457 case SVt_NULL:
5458 case SVt_IV:
5459 case SVt_NV:
5460 case SVt_RV:
5461 case SVt_PV:
5462 case SVt_PVIV:
5463 case SVt_PVNV:
5464 case SVt_PVMG:
5465 case SVt_PVBM:
5466 if (SvROK(sv))
5467 return "REF";
5468 else
5469 return "SCALAR";
5470 case SVt_PVLV: return "LVALUE";
5471 case SVt_PVAV: return "ARRAY";
5472 case SVt_PVHV: return "HASH";
5473 case SVt_PVCV: return "CODE";
5474 case SVt_PVGV: return "GLOB";
1d2dff63 5475 case SVt_PVFM: return "FORMAT";
27f9d8f3 5476 case SVt_PVIO: return "IO";
a0d0e21e
LW		 5477 default: return "UNKNOWN";
5478 }
5479 }
5480}
5481
954c1994
GS		 5482/*
5483=for apidoc sv_isobject
5484
5485Returns a boolean indicating whether the SV is an RV pointing to a blessed
5486object. If the SV is not an RV, or if the object is not blessed, then this
5487will return false.
5488
5489=cut
5490*/
5491
463ee0b2 5492int
864dbfa3 5493Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 5494{
68dc0745 5495 if (!sv)
5496 return 0;
5497 if (SvGMAGICAL(sv))
5498 mg_get(sv);
85e6fe83
LW		 5499 if (!SvROK(sv))
5500 return 0;
5501 sv = (SV*)SvRV(sv);
5502 if (!SvOBJECT(sv))
5503 return 0;
5504 return 1;
5505}
5506
954c1994
GS		 5507/*
5508=for apidoc sv_isa
5509
5510Returns a boolean indicating whether the SV is blessed into the specified
5511class. This does not check for subtypes; use C<sv_derived_from> to verify
5512an inheritance relationship.
5513
5514=cut
5515*/
5516
85e6fe83 5517int
864dbfa3 5518Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 5519{
68dc0745 5520 if (!sv)
5521 return 0;
5522 if (SvGMAGICAL(sv))
5523 mg_get(sv);
ed6116ce 5524 if (!SvROK(sv))
463ee0b2 5525 return 0;
ed6116ce
LW		 5526 sv = (SV*)SvRV(sv);
5527 if (!SvOBJECT(sv))
463ee0b2
LW		 5528 return 0;
5529
5530 return strEQ(HvNAME(SvSTASH(sv)), name);
5531}
5532
954c1994
GS		 5533/*
5534=for apidoc newSVrv
5535
5536Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5537it will be upgraded to one. If C<classname> is non-null then the new SV will
5538be blessed in the specified package. The new SV is returned and its
5539reference count is 1.
5540
5541=cut
5542*/
5543
463ee0b2 5544SV*
864dbfa3 5545Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 5546{
11343788 5547 dTHR;
463ee0b2
LW		 5548 SV *sv;
5549
4561caa4 5550 new_SV(sv);
51cf62d8 5551
2213622d 5552 SV_CHECK_THINKFIRST(rv);
51cf62d8 5553 SvAMAGIC_off(rv);
51cf62d8 5554
0199fce9
JD		 5555 if (SvTYPE(rv) >= SVt_PVMG) {
5556 U32 refcnt = SvREFCNT(rv);
5557 SvREFCNT(rv) = 0;
5558 sv_clear(rv);
5559 SvFLAGS(rv) = 0;
5560 SvREFCNT(rv) = refcnt;
5561 }
5562
51cf62d8 5563 if (SvTYPE(rv) < SVt_RV)
0199fce9
JD		 5564 sv_upgrade(rv, SVt_RV);
5565 else if (SvTYPE(rv) > SVt_RV) {
5566 (void)SvOOK_off(rv);
5567 if (SvPVX(rv) && SvLEN(rv))
5568 Safefree(SvPVX(rv));
5569 SvCUR_set(rv, 0);
5570 SvLEN_set(rv, 0);
5571 }
51cf62d8
OT		 5572
5573 (void)SvOK_off(rv);
053fc874 5574 SvRV(rv) = sv;
ed6116ce 5575 SvROK_on(rv);
463ee0b2 5576
a0d0e21e
LW		 5577 if (classname) {
5578 HV* stash = gv_stashpv(classname, TRUE);
5579 (void)sv_bless(rv, stash);
5580 }
5581 return sv;
5582}
5583
954c1994
GS		 5584/*
5585=for apidoc sv_setref_pv
5586
5587Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5588argument will be upgraded to an RV. That RV will be modified to point to
5589the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5590into the SV. The C<classname> argument indicates the package for the
5591blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5592will be returned and will have a reference count of 1.
5593
5594Do not use with other Perl types such as HV, AV, SV, CV, because those
5595objects will become corrupted by the pointer copy process.
5596
5597Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5598
5599=cut
5600*/
5601
a0d0e21e 5602SV*
864dbfa3 5603Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 5604{
189b2af5 5605 if (!pv) {
3280af22 5606 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 5607 SvSETMAGIC(rv);
5608 }
a0d0e21e 5609 else
56431972 5610 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 5611 return rv;
5612}
5613
954c1994
GS		 5614/*
5615=for apidoc sv_setref_iv
5616
5617Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5618argument will be upgraded to an RV. That RV will be modified to point to
5619the new SV. The C<classname> argument indicates the package for the
5620blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5621will be returned and will have a reference count of 1.
5622
5623=cut
5624*/
5625
a0d0e21e 5626SV*
864dbfa3 5627Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 5628{
5629 sv_setiv(newSVrv(rv,classname), iv);
5630 return rv;
5631}
5632
954c1994
GS		 5633/*
5634=for apidoc sv_setref_nv
5635
5636Copies a double into a new SV, optionally blessing the SV. The C<rv>
5637argument will be upgraded to an RV. That RV will be modified to point to
5638the new SV. The C<classname> argument indicates the package for the
5639blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5640will be returned and will have a reference count of 1.
5641
5642=cut
5643*/
5644
a0d0e21e 5645SV*
65202027 5646Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 5647{
5648 sv_setnv(newSVrv(rv,classname), nv);
5649 return rv;
5650}
463ee0b2 5651
954c1994
GS		 5652/*
5653=for apidoc sv_setref_pvn
5654
5655Copies a string into a new SV, optionally blessing the SV. The length of the
5656string must be specified with C<n>. The C<rv> argument will be upgraded to
5657an RV. That RV will be modified to point to the new SV. The C<classname>
5658argument indicates the package for the blessing. Set C<classname> to
5659C<Nullch> to avoid the blessing. The new SV will be returned and will have
5660a reference count of 1.
5661
5662Note that C<sv_setref_pv> copies the pointer while this copies the string.
5663
5664=cut
5665*/
5666
a0d0e21e 5667SV*
864dbfa3 5668Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 5669{
5670 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 5671 return rv;
5672}
5673
954c1994
GS		 5674/*
5675=for apidoc sv_bless
5676
5677Blesses an SV into a specified package. The SV must be an RV. The package
5678must be designated by its stash (see C<gv_stashpv()>). The reference count
5679of the SV is unaffected.
5680
5681=cut
5682*/
5683
a0d0e21e 5684SV*
864dbfa3 5685Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 5686{
11343788 5687 dTHR;
76e3520e 5688 SV *tmpRef;
a0d0e21e 5689 if (!SvROK(sv))
cea2e8a9 5690 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 5691 tmpRef = SvRV(sv);
5692 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5693 if (SvREADONLY(tmpRef))
cea2e8a9 5694 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 5695 if (SvOBJECT(tmpRef)) {
5696 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5697 --PL_sv_objcount;
76e3520e 5698 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 5699 }
a0d0e21e 5700 }
76e3520e
GS		 5701 SvOBJECT_on(tmpRef);
5702 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5703 ++PL_sv_objcount;
76e3520e
GS		 5704 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5705 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 5706
2e3febc6
CS		 5707 if (Gv_AMG(stash))
5708 SvAMAGIC_on(sv);
5709 else
5710 SvAMAGIC_off(sv);
a0d0e21e
LW		 5711
5712 return sv;
5713}
5714
76e3520e 5715STATIC void
cea2e8a9 5716S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 5717{
850fabdf
GS		 5718 void *xpvmg;
5719
a0d0e21e
LW		 5720 assert(SvTYPE(sv) == SVt_PVGV);
5721 SvFAKE_off(sv);
5722 if (GvGP(sv))
1edc1566 5723 gp_free((GV*)sv);
e826b3c7
GS		 5724 if (GvSTASH(sv)) {
5725 SvREFCNT_dec(GvSTASH(sv));
5726 GvSTASH(sv) = Nullhv;
5727 }
a0d0e21e
LW		 5728 sv_unmagic(sv, '*');
5729 Safefree(GvNAME(sv));
a5f75d66 5730 GvMULTI_off(sv);
850fabdf
GS		 5731
5732 /* need to keep SvANY(sv) in the right arena */
5733 xpvmg = new_XPVMG();
5734 StructCopy(SvANY(sv), xpvmg, XPVMG);
5735 del_XPVGV(SvANY(sv));
5736 SvANY(sv) = xpvmg;
5737
a0d0e21e
LW		 5738 SvFLAGS(sv) &= ~SVTYPEMASK;
5739 SvFLAGS(sv) |= SVt_PVMG;
5740}
5741
954c1994
GS		 5742/*
5743=for apidoc sv_unref
5744
5745Unsets the RV status of the SV, and decrements the reference count of
5746whatever was being referenced by the RV. This can almost be thought of
5747as a reversal of C<newSVrv>. See C<SvROK_off>.
5748
5749=cut
5750*/
5751
ed6116ce 5752void
864dbfa3 5753Perl_sv_unref(pTHX_ SV *sv)
ed6116ce 5754{
a0d0e21e 5755 SV* rv = SvRV(sv);
810b8aa5
GS		 5756
5757 if (SvWEAKREF(sv)) {
5758 sv_del_backref(sv);
5759 SvWEAKREF_off(sv);
5760 SvRV(sv) = 0;
5761 return;
5762 }
ed6116ce
LW		 5763 SvRV(sv) = 0;
5764 SvROK_off(sv);
4633a7c4
LW		 5765 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5766 SvREFCNT_dec(rv);
8e07c86e 5767 else
4633a7c4 5768 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 5769}
8990e307 5770
bbce6d69 5771void
864dbfa3 5772Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 5773{
5774 sv_magic((sv), Nullsv, 't', Nullch, 0);
5775}
5776
5777void
864dbfa3 5778Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 5779{
13f57bf8 5780 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5781 MAGIC *mg = mg_find(sv, 't');
5782 if (mg)
565764a8 5783 mg->mg_len &= ~1;
36477c24 5784 }
bbce6d69 5785}
5786
5787bool
864dbfa3 5788Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 5789{
13f57bf8 5790 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5791 MAGIC *mg = mg_find(sv, 't');
155aba94 5792 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 5793 return TRUE;
5794 }
5795 return FALSE;
bbce6d69 5796}
5797
954c1994
GS		 5798/*
5799=for apidoc sv_setpviv
5800
5801Copies an integer into the given SV, also updating its string value.
5802Does not handle 'set' magic. See C<sv_setpviv_mg>.
5803
5804=cut
5805*/
5806
84902520 5807void
864dbfa3 5808Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 5809{
25da4f38
IZ		 5810 char buf[TYPE_CHARS(UV)];
5811 char *ebuf;
5812 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 5813
25da4f38 5814 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 5815}
5816
ef50df4b 5817
954c1994
GS		 5818/*
5819=for apidoc sv_setpviv_mg
5820
5821Like C<sv_setpviv>, but also handles 'set' magic.
5822
5823=cut
5824*/
5825
ef50df4b 5826void
864dbfa3 5827Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 5828{
25da4f38
IZ		 5829 char buf[TYPE_CHARS(UV)];
5830 char *ebuf;
5831 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5832
5833 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 5834 SvSETMAGIC(sv);
5835}
5836
cea2e8a9
GS		 5837#if defined(PERL_IMPLICIT_CONTEXT)
5838void
5839Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5840{
5841 dTHX;
5842 va_list args;
5843 va_start(args, pat);
c5be433b 5844 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 5845 va_end(args);
5846}
5847
5848
5849void
5850Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5851{
5852 dTHX;
5853 va_list args;
5854 va_start(args, pat);
c5be433b 5855 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 5856 va_end(args);
cea2e8a9
GS		 5857}
5858#endif
5859
954c1994
GS		 5860/*
5861=for apidoc sv_setpvf
5862
5863Processes its arguments like C<sprintf> and sets an SV to the formatted
5864output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5865
5866=cut
5867*/
5868
46fc3d4c 5869void
864dbfa3 5870Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5871{
5872 va_list args;
46fc3d4c 5873 va_start(args, pat);
c5be433b 5874 sv_vsetpvf(sv, pat, &args);
46fc3d4c 5875 va_end(args);
5876}
5877
c5be433b
GS		 5878void
5879Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5880{
5881 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5882}
ef50df4b 5883
954c1994
GS		 5884/*
5885=for apidoc sv_setpvf_mg
5886
5887Like C<sv_setpvf>, but also handles 'set' magic.
5888
5889=cut
5890*/
5891
ef50df4b 5892void
864dbfa3 5893Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5894{
5895 va_list args;
ef50df4b 5896 va_start(args, pat);
c5be433b 5897 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 5898 va_end(args);
c5be433b
GS		 5899}
5900
5901void
5902Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5903{
5904 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5905 SvSETMAGIC(sv);
5906}
5907
cea2e8a9
GS		 5908#if defined(PERL_IMPLICIT_CONTEXT)
5909void
5910Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5911{
5912 dTHX;
5913 va_list args;
5914 va_start(args, pat);
c5be433b 5915 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 5916 va_end(args);
5917}
5918
5919void
5920Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5921{
5922 dTHX;
5923 va_list args;
5924 va_start(args, pat);
c5be433b 5925 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 5926 va_end(args);
cea2e8a9
GS		 5927}
5928#endif
5929
954c1994
GS		 5930/*
5931=for apidoc sv_catpvf
5932
5933Processes its arguments like C<sprintf> and appends the formatted output
5934to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5935typically be called after calling this function to handle 'set' magic.
5936
5937=cut
5938*/
5939
46fc3d4c 5940void
864dbfa3 5941Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5942{
5943 va_list args;
46fc3d4c 5944 va_start(args, pat);
c5be433b 5945 sv_vcatpvf(sv, pat, &args);
46fc3d4c 5946 va_end(args);
5947}
5948
ef50df4b 5949void
c5be433b
GS		 5950Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5951{
5952 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5953}
5954
954c1994
GS		 5955/*
5956=for apidoc sv_catpvf_mg
5957
5958Like C<sv_catpvf>, but also handles 'set' magic.
5959
5960=cut
5961*/
5962
c5be433b 5963void
864dbfa3 5964Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5965{
5966 va_list args;
ef50df4b 5967 va_start(args, pat);
c5be433b 5968 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 5969 va_end(args);
c5be433b
GS		 5970}
5971
5972void
5973Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5974{
5975 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5976 SvSETMAGIC(sv);
5977}
5978
954c1994
GS		 5979/*
5980=for apidoc sv_vsetpvfn
5981
5982Works like C<vcatpvfn> but copies the text into the SV instead of
5983appending it.
5984
5985=cut
5986*/
5987
46fc3d4c 5988void
7d5ea4e7 5989Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5990{
5991 sv_setpvn(sv, "", 0);
7d5ea4e7 5992 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 5993}
5994
954c1994
GS		 5995/*
5996=for apidoc sv_vcatpvfn
5997
5998Processes its arguments like C<vsprintf> and appends the formatted output
5999to an SV. Uses an array of SVs if the C style variable argument list is
6000missing (NULL). When running with taint checks enabled, indicates via
6001C<maybe_tainted> if results are untrustworthy (often due to the use of
6002locales).
6003
6004=cut
6005*/
6006
46fc3d4c 6007void
7d5ea4e7 6008Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 6009{
e858de61 6010 dTHR;
46fc3d4c 6011 char *p;
6012 char *q;
6013 char *patend;
fc36a67e 6014 STRLEN origlen;
46fc3d4c 6015 I32 svix = 0;
c635e13b 6016 static char nullstr[] = "(null)";
7e2040f0 6017 SV *argsv;
46fc3d4c 6018
6019 /* no matter what, this is a string now */
fc36a67e 6020 (void)SvPV_force(sv, origlen);
46fc3d4c 6021
fc36a67e 6022 /* special-case "", "%s", and "%_" */
46fc3d4c 6023 if (patlen == 0)
6024 return;
fc36a67e 6025 if (patlen == 2 && pat[0] == '%') {
6026 switch (pat[1]) {
6027 case 's':
c635e13b 6028 if (args) {
6029 char *s = va_arg(*args, char*);
6030 sv_catpv(sv, s ? s : nullstr);
6031 }
7e2040f0 6032 else if (svix < svmax) {
fc36a67e 6033 sv_catsv(sv, *svargs);
7e2040f0
GS		 6034 if (DO_UTF8(*svargs))
6035 SvUTF8_on(sv);
6036 }
fc36a67e 6037 return;
6038 case '_':
6039 if (args) {
7e2040f0
GS		 6040 argsv = va_arg(*args, SV*);
6041 sv_catsv(sv, argsv);
6042 if (DO_UTF8(argsv))
6043 SvUTF8_on(sv);
fc36a67e 6044 return;
6045 }
6046 /* See comment on '_' below */
6047 break;
6048 }
46fc3d4c 6049 }
6050
6051 patend = (char*)pat + patlen;
6052 for (p = (char*)pat; p < patend; p = q) {
6053 bool alt = FALSE;
6054 bool left = FALSE;
b22c7a20
GS		 6055 bool vectorize = FALSE;
6056 bool utf = FALSE;
46fc3d4c 6057 char fill = ' ';
6058 char plus = 0;
6059 char intsize = 0;
6060 STRLEN width = 0;
fc36a67e 6061 STRLEN zeros = 0;
46fc3d4c 6062 bool has_precis = FALSE;
6063 STRLEN precis = 0;
7e2040f0 6064 bool is_utf = FALSE;
eb3fce90 6065
46fc3d4c 6066 char esignbuf[4];
806e7201 6067 U8 utf8buf[UTF8_MAXLEN];
46fc3d4c 6068 STRLEN esignlen = 0;
6069
6070 char *eptr = Nullch;
fc36a67e 6071 STRLEN elen = 0;
089c015b
JH		 6072 /* Times 4: a decimal digit takes more than 3 binary digits.
6073 * NV_DIG: mantissa takes than many decimal digits.
6074 * Plus 32: Playing safe. */
6075 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6076 /* large enough for "%#.#f" --chip */
6077 /* what about long double NVs? --jhi */
b22c7a20
GS		 6078
6079 SV *vecsv;
a05b299f 6080 U8 *vecstr = Null(U8*);
b22c7a20 6081 STRLEN veclen = 0;
46fc3d4c 6082 char c;
6083 int i;
6084 unsigned base;
6085 IV iv;
6086 UV uv;
65202027 6087 NV nv;
46fc3d4c 6088 STRLEN have;
6089 STRLEN need;
6090 STRLEN gap;
b22c7a20
GS		 6091 char *dotstr = ".";
6092 STRLEN dotstrlen = 1;
eb3fce90
JH		 6093 I32 epix = 0; /* explicit parameter index */
6094 I32 ewix = 0; /* explicit width index */
6095 bool asterisk = FALSE;
46fc3d4c 6096
6097 for (q = p; q < patend && *q != '%'; ++q) ;
6098 if (q > p) {
6099 sv_catpvn(sv, p, q - p);
6100 p = q;
6101 }
6102 if (q++ >= patend)
6103 break;
6104
fc36a67e 6105 /* FLAGS */
6106
46fc3d4c 6107 while (*q) {
6108 switch (*q) {
6109 case ' ':
6110 case '+':
6111 plus = *q++;
6112 continue;
6113
6114 case '-':
6115 left = TRUE;
6116 q++;
6117 continue;
6118
6119 case '0':
6120 fill = *q++;
6121 continue;
6122
6123 case '#':
6124 alt = TRUE;
6125 q++;
6126 continue;
6127
b22c7a20
GS		 6128 case '*': /* printf("%*vX",":",$ipv6addr) */
6129 if (q[1] != 'v')
6130 break;
6131 q++;
6132 if (args)
6133 vecsv = va_arg(*args, SV*);
6134 else if (svix < svmax)
6135 vecsv = svargs[svix++];
9c3dd3fe
GS		 6136 else
6137 continue;
b22c7a20
GS		 6138 dotstr = SvPVx(vecsv,dotstrlen);
6139 if (DO_UTF8(vecsv))
6140 is_utf = TRUE;
6141 /* FALL THROUGH */
6142
6143 case 'v':
6144 vectorize = TRUE;
6145 q++;
b22c7a20
GS		 6146 continue;
6147
fc36a67e 6148 default:
6149 break;
6150 }
6151 break;
6152 }
46fc3d4c 6153
fc36a67e 6154 /* WIDTH */
6155
eb3fce90
JH		 6156 scanwidth:
6157
6158 if (*q == '*') {
6159 if (asterisk)
6160 goto unknown;
6161 asterisk = TRUE;
6162 q++;
6163 }
6164
fc36a67e 6165 switch (*q) {
6166 case '1': case '2': case '3':
6167 case '4': case '5': case '6':
6168 case '7': case '8': case '9':
6169 width = 0;
6170 while (isDIGIT(*q))
6171 width = width * 10 + (*q++ - '0');
eb3fce90
JH		 6172 if (*q == '$') {
6173 if (asterisk && ewix == 0) {
6174 ewix = width;
6175 width = 0;
6176 q++;
6177 goto scanwidth;
6178 } else if (epix == 0) {
6179 epix = width;
6180 width = 0;
6181 q++;
6182 goto scanwidth;
6183 } else
6184 goto unknown;
6185 }
6186 }
fc36a67e 6187
eb3fce90 6188 if (asterisk) {
fc36a67e 6189 if (args)
6190 i = va_arg(*args, int);
6191 else
eb3fce90
JH		 6192 i = (ewix ? ewix <= svmax : svix < svmax) ?
6193 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6194 left |= (i < 0);
6195 width = (i < 0) ? -i : i;
fc36a67e 6196 }
6197
6198 /* PRECISION */
46fc3d4c 6199
fc36a67e 6200 if (*q == '.') {
6201 q++;
6202 if (*q == '*') {
46fc3d4c 6203 if (args)
6204 i = va_arg(*args, int);
6205 else
eb3fce90
JH		 6206 i = (ewix ? ewix <= svmax : svix < svmax)
6207 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6208 precis = (i < 0) ? 0 : i;
46fc3d4c 6209 q++;
fc36a67e 6210 }
6211 else {
6212 precis = 0;
6213 while (isDIGIT(*q))
6214 precis = precis * 10 + (*q++ - '0');
6215 }
6216 has_precis = TRUE;
6217 }
46fc3d4c 6218
bb2899ba
GS		 6219 if (vectorize) {
6220 if (args) {
6221 vecsv = va_arg(*args, SV*);
6222 vecstr = (U8*)SvPVx(vecsv,veclen);
6223 utf = DO_UTF8(vecsv);
6224 }
eb3fce90
JH		 6225 else if (epix ? epix <= svmax : svix < svmax) {
6226 vecsv = svargs[epix ? epix-1 : svix++];
bb2899ba
GS		 6227 vecstr = (U8*)SvPVx(vecsv,veclen);
6228 utf = DO_UTF8(vecsv);
6229 }
6230 else {
6231 vecstr = (U8*)"";
6232 veclen = 0;
6233 }
6234 }
6235
fc36a67e 6236 /* SIZE */
46fc3d4c 6237
fc36a67e 6238 switch (*q) {
e5c81feb 6239#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6f9bb7fd 6240 case 'L': /* Ld */
e5c81feb
JH		 6241 /* FALL THROUGH */
6242#endif
6243#ifdef HAS_QUAD
6f9bb7fd
GS		 6244 case 'q': /* qd */
6245 intsize = 'q';
6246 q++;
6247 break;
6248#endif
fc36a67e 6249 case 'l':
e5c81feb
JH		 6250#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6251 if (*(q + 1) == 'l') { /* lld, llf */
fc36a67e 6252 intsize = 'q';
6253 q += 2;
46fc3d4c 6254 break;
cf2093f6 6255 }
fc36a67e 6256#endif
6f9bb7fd 6257 /* FALL THROUGH */
fc36a67e 6258 case 'h':
cf2093f6 6259 /* FALL THROUGH */
fc36a67e 6260 case 'V':
6261 intsize = *q++;
46fc3d4c 6262 break;
6263 }
6264
fc36a67e 6265 /* CONVERSION */
6266
46fc3d4c 6267 switch (c = *q++) {
6268
6269 /* STRINGS */
6270
6271 case '%':
6272 eptr = q - 1;
6273 elen = 1;
6274 goto string;
6275
6276 case 'c':
7e2040f0
GS		 6277 if (args)
6278 uv = va_arg(*args, int);
6279 else
eb3fce90
JH		 6280 uv = (epix ? epix <= svmax : svix < svmax) ?
6281 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
3969a896 6282 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 6283 eptr = (char*)utf8buf;
6284 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 6285 is_utf = TRUE;
6286 }
6287 else {
6288 c = (char)uv;
6289 eptr = &c;
6290 elen = 1;
a0ed51b3 6291 }
46fc3d4c 6292 goto string;
6293
46fc3d4c 6294 case 's':
6295 if (args) {
fc36a67e 6296 eptr = va_arg(*args, char*);
c635e13b 6297 if (eptr)
1d7c1841
GS		 6298#ifdef MACOS_TRADITIONAL
6299 /* On MacOS, %#s format is used for Pascal strings */
6300 if (alt)
6301 elen = *eptr++;
6302 else
6303#endif
c635e13b 6304 elen = strlen(eptr);
6305 else {
6306 eptr = nullstr;
6307 elen = sizeof nullstr - 1;
6308 }
46fc3d4c 6309 }
eb3fce90
JH		 6310 else if (epix ? epix <= svmax : svix < svmax) {
6311 argsv = svargs[epix ? epix-1 : svix++];
7e2040f0
GS		 6312 eptr = SvPVx(argsv, elen);
6313 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 6314 if (has_precis && precis < elen) {
6315 I32 p = precis;
7e2040f0 6316 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 6317 precis = p;
6318 }
6319 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 6320 width += elen - sv_len_utf8(argsv);
a0ed51b3 6321 }
7e2040f0 6322 is_utf = TRUE;
a0ed51b3
LW		 6323 }
6324 }
46fc3d4c 6325 goto string;
6326
fc36a67e 6327 case '_':
6328 /*
6329 * The "%_" hack might have to be changed someday,
6330 * if ISO or ANSI decide to use '_' for something.
6331 * So we keep it hidden from users' code.
6332 */
6333 if (!args)
6334 goto unknown;
7e2040f0
GS		 6335 argsv = va_arg(*args,SV*);
6336 eptr = SvPVx(argsv, elen);
6337 if (DO_UTF8(argsv))
6338 is_utf = TRUE;
fc36a67e 6339
46fc3d4c 6340 string:
b22c7a20 6341 vectorize = FALSE;
46fc3d4c 6342 if (has_precis && elen > precis)
6343 elen = precis;
6344 break;
6345
6346 /* INTEGERS */
6347
fc36a67e 6348 case 'p':
c2e66d9e
GS		 6349 if (alt)
6350 goto unknown;
fc36a67e 6351 if (args)
56431972 6352 uv = PTR2UV(va_arg(*args, void*));
fc36a67e 6353 else
eb3fce90
JH		 6354 uv = (epix ? epix <= svmax : svix < svmax) ?
6355 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
fc36a67e 6356 base = 16;
6357 goto integer;
6358
46fc3d4c 6359 case 'D':
29fe7a80 6360#ifdef IV_IS_QUAD
22f3ae8c 6361 intsize = 'q';
29fe7a80 6362#else
46fc3d4c 6363 intsize = 'l';
29fe7a80 6364#endif
46fc3d4c 6365 /* FALL THROUGH */
6366 case 'd':
6367 case 'i':
b22c7a20 6368 if (vectorize) {
ba210ebe 6369 STRLEN ulen;
b22c7a20
GS		 6370 if (!veclen) {
6371 vectorize = FALSE;
6372 break;
6373 }
6374 if (utf)
dcad2880 6375 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 6376 else {
a05b299f 6377 iv = *vecstr;
b22c7a20
GS		 6378 ulen = 1;
6379 }
6380 vecstr += ulen;
6381 veclen -= ulen;
6382 }
6383 else if (args) {
46fc3d4c 6384 switch (intsize) {
6385 case 'h': iv = (short)va_arg(*args, int); break;
6386 default: iv = va_arg(*args, int); break;
6387 case 'l': iv = va_arg(*args, long); break;
fc36a67e 6388 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 6389#ifdef HAS_QUAD
6390 case 'q': iv = va_arg(*args, Quad_t); break;
6391#endif
46fc3d4c 6392 }
6393 }
6394 else {
eb3fce90
JH		 6395 iv = (epix ? epix <= svmax : svix < svmax) ?
6396 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
46fc3d4c 6397 switch (intsize) {
6398 case 'h': iv = (short)iv; break;
be28567c 6399 default: break;
46fc3d4c 6400 case 'l': iv = (long)iv; break;
fc36a67e 6401 case 'V': break;
cf2093f6
JH		 6402#ifdef HAS_QUAD
6403 case 'q': iv = (Quad_t)iv; break;
6404#endif
46fc3d4c 6405 }
6406 }
6407 if (iv >= 0) {
6408 uv = iv;
6409 if (plus)
6410 esignbuf[esignlen++] = plus;
6411 }
6412 else {
6413 uv = -iv;
6414 esignbuf[esignlen++] = '-';
6415 }
6416 base = 10;
6417 goto integer;
6418
fc36a67e 6419 case 'U':
29fe7a80 6420#ifdef IV_IS_QUAD
22f3ae8c 6421 intsize = 'q';
29fe7a80 6422#else
fc36a67e 6423 intsize = 'l';
29fe7a80 6424#endif
fc36a67e 6425 /* FALL THROUGH */
6426 case 'u':
6427 base = 10;
6428 goto uns_integer;
6429
4f19785b
WSI		 6430 case 'b':
6431 base = 2;
6432 goto uns_integer;
6433
46fc3d4c 6434 case 'O':
29fe7a80 6435#ifdef IV_IS_QUAD
22f3ae8c 6436 intsize = 'q';
29fe7a80 6437#else
46fc3d4c 6438 intsize = 'l';
29fe7a80 6439#endif
46fc3d4c 6440 /* FALL THROUGH */
6441 case 'o':
6442 base = 8;
6443 goto uns_integer;
6444
6445 case 'X':
46fc3d4c 6446 case 'x':
6447 base = 16;
46fc3d4c 6448
6449 uns_integer:
b22c7a20 6450 if (vectorize) {
ba210ebe 6451 STRLEN ulen;
b22c7a20
GS		 6452 vector:
6453 if (!veclen) {
6454 vectorize = FALSE;
6455 break;
6456 }
6457 if (utf)
dcad2880 6458 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 6459 else {
a05b299f 6460 uv = *vecstr;
b22c7a20
GS		 6461 ulen = 1;
6462 }
6463 vecstr += ulen;
6464 veclen -= ulen;
6465 }
6466 else if (args) {
46fc3d4c 6467 switch (intsize) {
6468 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6469 default: uv = va_arg(*args, unsigned); break;
6470 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 6471 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 6472#ifdef HAS_QUAD
6473 case 'q': uv = va_arg(*args, Quad_t); break;
6474#endif
46fc3d4c 6475 }
6476 }
6477 else {
eb3fce90
JH		 6478 uv = (epix ? epix <= svmax : svix < svmax) ?
6479 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
46fc3d4c 6480 switch (intsize) {
6481 case 'h': uv = (unsigned short)uv; break;
be28567c 6482 default: break;
46fc3d4c 6483 case 'l': uv = (unsigned long)uv; break;
fc36a67e 6484 case 'V': break;
cf2093f6
JH		 6485#ifdef HAS_QUAD
6486 case 'q': uv = (Quad_t)uv; break;
6487#endif
46fc3d4c 6488 }
6489 }
6490
6491 integer:
46fc3d4c 6492 eptr = ebuf + sizeof ebuf;
fc36a67e 6493 switch (base) {
6494 unsigned dig;
6495 case 16:
c10ed8b9
HS		 6496 if (!uv)
6497 alt = FALSE;
1d7c1841
GS		 6498 p = (char*)((c == 'X')
6499 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 6500 do {
6501 dig = uv & 15;
6502 *--eptr = p[dig];
6503 } while (uv >>= 4);
6504 if (alt) {
46fc3d4c 6505 esignbuf[esignlen++] = '0';
fc36a67e 6506 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 6507 }
fc36a67e 6508 break;
6509 case 8:
6510 do {
6511 dig = uv & 7;
6512 *--eptr = '0' + dig;
6513 } while (uv >>= 3);
6514 if (alt && *eptr != '0')
6515 *--eptr = '0';
6516 break;
4f19785b
WSI		 6517 case 2:
6518 do {
6519 dig = uv & 1;
6520 *--eptr = '0' + dig;
6521 } while (uv >>= 1);
eda88b6d
JH		 6522 if (alt) {
6523 esignbuf[esignlen++] = '0';
7481bb52 6524 esignbuf[esignlen++] = 'b';
eda88b6d 6525 }
4f19785b 6526 break;
fc36a67e 6527 default: /* it had better be ten or less */
6bc102ca 6528#if defined(PERL_Y2KWARN)
e476b1b5 6529 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 6530 STRLEN n;
6531 char *s = SvPV(sv,n);
6532 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6533 && (n == 2 || !isDIGIT(s[n-3])))
6534 {
e476b1b5 6535 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 6536 "Possible Y2K bug: %%%c %s",
6537 c, "format string following '19'");
6538 }
6539 }
6540#endif
fc36a67e 6541 do {
6542 dig = uv % base;
6543 *--eptr = '0' + dig;
6544 } while (uv /= base);
6545 break;
46fc3d4c 6546 }
6547 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 6548 if (has_precis) {
6549 if (precis > elen)
6550 zeros = precis - elen;
6551 else if (precis == 0 && elen == 1 && *eptr == '0')
6552 elen = 0;
6553 }
46fc3d4c 6554 break;
6555
6556 /* FLOATING POINT */
6557
fc36a67e 6558 case 'F':
6559 c = 'f'; /* maybe %F isn't supported here */
6560 /* FALL THROUGH */
46fc3d4c 6561 case 'e': case 'E':
fc36a67e 6562 case 'f':
46fc3d4c 6563 case 'g': case 'G':
6564
6565 /* This is evil, but floating point is even more evil */
6566
b22c7a20 6567 vectorize = FALSE;
fc36a67e 6568 if (args)
65202027 6569 nv = va_arg(*args, NV);
fc36a67e 6570 else
eb3fce90
JH		 6571 nv = (epix ? epix <= svmax : svix < svmax) ?
6572 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
fc36a67e 6573
6574 need = 0;
6575 if (c != 'e' && c != 'E') {
6576 i = PERL_INT_MIN;
73b309ea 6577 (void)Perl_frexp(nv, &i);
fc36a67e 6578 if (i == PERL_INT_MIN)
cea2e8a9 6579 Perl_die(aTHX_ "panic: frexp");
c635e13b 6580 if (i > 0)
fc36a67e 6581 need = BIT_DIGITS(i);
6582 }
6583 need += has_precis ? precis : 6; /* known default */
6584 if (need < width)
6585 need = width;
6586
46fc3d4c 6587 need += 20; /* fudge factor */
80252599
GS		 6588 if (PL_efloatsize < need) {
6589 Safefree(PL_efloatbuf);
6590 PL_efloatsize = need + 20; /* more fudge */
6591 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 6592 PL_efloatbuf[0] = '\0';
46fc3d4c 6593 }
6594
6595 eptr = ebuf + sizeof ebuf;
6596 *--eptr = '\0';
6597 *--eptr = c;
e5c81feb 6598#if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
cf2093f6 6599 {
e5c81feb
JH		 6600 /* Copy the one or more characters in a long double
6601 * format before the 'base' ([efgEFG]) character to
6602 * the format string. */
6603 static char const prifldbl[] = PERL_PRIfldbl;
6604 char const *p = prifldbl + sizeof(prifldbl) - 3;
6605 while (p >= prifldbl) { *--eptr = *p--; }
cf2093f6 6606 }
65202027 6607#endif
46fc3d4c 6608 if (has_precis) {
6609 base = precis;
6610 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6611 *--eptr = '.';
6612 }
6613 if (width) {
6614 base = width;
6615 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6616 }
6617 if (fill == '0')
6618 *--eptr = fill;
84902520
TB		 6619 if (left)
6620 *--eptr = '-';
46fc3d4c 6621 if (plus)
6622 *--eptr = plus;
6623 if (alt)
6624 *--eptr = '#';
6625 *--eptr = '%';
6626
dd8482fc 6627 (void)sprintf(PL_efloatbuf, eptr, nv);
8af02333 6628
80252599
GS		 6629 eptr = PL_efloatbuf;
6630 elen = strlen(PL_efloatbuf);
46fc3d4c 6631 break;
6632
fc36a67e 6633 /* SPECIAL */
6634
6635 case 'n':
b22c7a20 6636 vectorize = FALSE;
fc36a67e 6637 i = SvCUR(sv) - origlen;
6638 if (args) {
c635e13b 6639 switch (intsize) {
6640 case 'h': *(va_arg(*args, short*)) = i; break;
6641 default: *(va_arg(*args, int*)) = i; break;
6642 case 'l': *(va_arg(*args, long*)) = i; break;
6643 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 6644#ifdef HAS_QUAD
6645 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6646#endif
c635e13b 6647 }
fc36a67e 6648 }
eb3fce90
JH		 6649 else if (epix ? epix <= svmax : svix < svmax)
6650 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
fc36a67e 6651 continue; /* not "break" */
6652
6653 /* UNKNOWN */
6654
46fc3d4c 6655 default:
fc36a67e 6656 unknown:
b22c7a20 6657 vectorize = FALSE;
599cee73 6658 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 6659 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 6660 SV *msg = sv_newmortal();
cea2e8a9 6661 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 6662 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 6663 if (c) {
0f4b6630 6664 if (isPRINT(c))
1c846c1f 6665 Perl_sv_catpvf(aTHX_ msg,
0f4b6630
JH		 6666 "\"%%%c\"", c & 0xFF);
6667 else
6668 Perl_sv_catpvf(aTHX_ msg,
57def98f 6669 "\"%%\\%03"UVof"\"",
0f4b6630 6670 (UV)c & 0xFF);
0f4b6630 6671 } else
c635e13b 6672 sv_catpv(msg, "end of string");
894356b3 6673 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 6674 }
fb73857a 6675
6676 /* output mangled stuff ... */
6677 if (c == '\0')
6678 --q;
46fc3d4c 6679 eptr = p;
6680 elen = q - p;
fb73857a 6681
6682 /* ... right here, because formatting flags should not apply */
6683 SvGROW(sv, SvCUR(sv) + elen + 1);
6684 p = SvEND(sv);
6685 memcpy(p, eptr, elen);
6686 p += elen;
6687 *p = '\0';
6688 SvCUR(sv) = p - SvPVX(sv);
6689 continue; /* not "break" */
46fc3d4c 6690 }
6691
fc36a67e 6692 have = esignlen + zeros + elen;
46fc3d4c 6693 need = (have > width ? have : width);
6694 gap = need - have;
6695
b22c7a20 6696 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 6697 p = SvEND(sv);
6698 if (esignlen && fill == '0') {
6699 for (i = 0; i < esignlen; i++)
6700 *p++ = esignbuf[i];
6701 }
6702 if (gap && !left) {
6703 memset(p, fill, gap);
6704 p += gap;
6705 }
6706 if (esignlen && fill != '0') {
6707 for (i = 0; i < esignlen; i++)
6708 *p++ = esignbuf[i];
6709 }
fc36a67e 6710 if (zeros) {
6711 for (i = zeros; i; i--)
6712 *p++ = '0';
6713 }
46fc3d4c 6714 if (elen) {
6715 memcpy(p, eptr, elen);
6716 p += elen;
6717 }
6718 if (gap && left) {
6719 memset(p, ' ', gap);
6720 p += gap;
6721 }
b22c7a20
GS		 6722 if (vectorize) {
6723 if (veclen) {
6724 memcpy(p, dotstr, dotstrlen);
6725 p += dotstrlen;
6726 }
6727 else
6728 vectorize = FALSE; /* done iterating over vecstr */
6729 }
7e2040f0
GS		 6730 if (is_utf)
6731 SvUTF8_on(sv);
46fc3d4c 6732 *p = '\0';
6733 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 6734 if (vectorize) {
6735 esignlen = 0;
6736 goto vector;
6737 }
46fc3d4c 6738 }
6739}
51371543 6740
1d7c1841
GS		 6741#if defined(USE_ITHREADS)
6742
6743#if defined(USE_THREADS)
6744# include "error: USE_THREADS and USE_ITHREADS are incompatible"
6745#endif
6746
1d7c1841
GS		 6747#ifndef GpREFCNT_inc
6748# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6749#endif
6750
6751
6752#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6753#define av_dup(s) (AV*)sv_dup((SV*)s)
6754#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6755#define hv_dup(s) (HV*)sv_dup((SV*)s)
6756#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6757#define cv_dup(s) (CV*)sv_dup((SV*)s)
6758#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6759#define io_dup(s) (IO*)sv_dup((SV*)s)
6760#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6761#define gv_dup(s) (GV*)sv_dup((SV*)s)
6762#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6763#define SAVEPV(p) (p ? savepv(p) : Nullch)
6764#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6765
6766REGEXP *
6767Perl_re_dup(pTHX_ REGEXP *r)
6768{
6769 /* XXX fix when pmop->op_pmregexp becomes shared */
6770 return ReREFCNT_inc(r);
6771}
6772
6773PerlIO *
6774Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6775{
6776 PerlIO *ret;
6777 if (!fp)
6778 return (PerlIO*)NULL;
6779
6780 /* look for it in the table first */
6781 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6782 if (ret)
6783 return ret;
6784
6785 /* create anew and remember what it is */
6786 ret = PerlIO_fdupopen(fp);
6787 ptr_table_store(PL_ptr_table, fp, ret);
6788 return ret;
6789}
6790
6791DIR *
6792Perl_dirp_dup(pTHX_ DIR *dp)
6793{
6794 if (!dp)
6795 return (DIR*)NULL;
6796 /* XXX TODO */
6797 return dp;
6798}
6799
6800GP *
6801Perl_gp_dup(pTHX_ GP *gp)
6802{
6803 GP *ret;
6804 if (!gp)
6805 return (GP*)NULL;
6806 /* look for it in the table first */
6807 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6808 if (ret)
6809 return ret;
6810
6811 /* create anew and remember what it is */
6812 Newz(0, ret, 1, GP);
6813 ptr_table_store(PL_ptr_table, gp, ret);
6814
6815 /* clone */
6816 ret->gp_refcnt = 0; /* must be before any other dups! */
6817 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6818 ret->gp_io = io_dup_inc(gp->gp_io);
6819 ret->gp_form = cv_dup_inc(gp->gp_form);
6820 ret->gp_av = av_dup_inc(gp->gp_av);
6821 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6822 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6823 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6824 ret->gp_cvgen = gp->gp_cvgen;
6825 ret->gp_flags = gp->gp_flags;
6826 ret->gp_line = gp->gp_line;
6827 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6828 return ret;
6829}
6830
6831MAGIC *
6832Perl_mg_dup(pTHX_ MAGIC *mg)
6833{
6834 MAGIC *mgret = (MAGIC*)NULL;
6835 MAGIC *mgprev;
6836 if (!mg)
6837 return (MAGIC*)NULL;
6838 /* look for it in the table first */
6839 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6840 if (mgret)
6841 return mgret;
6842
6843 for (; mg; mg = mg->mg_moremagic) {
6844 MAGIC *nmg;
6845 Newz(0, nmg, 1, MAGIC);
6846 if (!mgret)
6847 mgret = nmg;
6848 else
6849 mgprev->mg_moremagic = nmg;
6850 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6851 nmg->mg_private = mg->mg_private;
6852 nmg->mg_type = mg->mg_type;
6853 nmg->mg_flags = mg->mg_flags;
6854 if (mg->mg_type == 'r') {
6855 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6856 }
6857 else {
6858 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6859 ? sv_dup_inc(mg->mg_obj)
6860 : sv_dup(mg->mg_obj);
6861 }
6862 nmg->mg_len = mg->mg_len;
6863 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6864 if (mg->mg_ptr && mg->mg_type != 'g') {
6865 if (mg->mg_len >= 0) {
6866 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6867 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6868 AMT *amtp = (AMT*)mg->mg_ptr;
6869 AMT *namtp = (AMT*)nmg->mg_ptr;
6870 I32 i;
6871 for (i = 1; i < NofAMmeth; i++) {
6872 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6873 }
6874 }
6875 }
6876 else if (mg->mg_len == HEf_SVKEY)
6877 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6878 }
6879 mgprev = nmg;
6880 }
6881 return mgret;
6882}
6883
6884PTR_TBL_t *
6885Perl_ptr_table_new(pTHX)
6886{
6887 PTR_TBL_t *tbl;
6888 Newz(0, tbl, 1, PTR_TBL_t);
6889 tbl->tbl_max = 511;
6890 tbl->tbl_items = 0;
6891 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6892 return tbl;
6893}
6894
6895void *
6896Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6897{
6898 PTR_TBL_ENT_t *tblent;
d2a79402 6899 UV hash = PTR2UV(sv);
1d7c1841
GS		 6900 assert(tbl);
6901 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6902 for (; tblent; tblent = tblent->next) {
6903 if (tblent->oldval == sv)
6904 return tblent->newval;
6905 }
6906 return (void*)NULL;
6907}
6908
6909void
6910Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6911{
6912 PTR_TBL_ENT_t *tblent, **otblent;
6913 /* XXX this may be pessimal on platforms where pointers aren't good
6914 * hash values e.g. if they grow faster in the most significant
6915 * bits */
d2a79402 6916 UV hash = PTR2UV(oldv);
1d7c1841
GS		 6917 bool i = 1;
6918
6919 assert(tbl);
6920 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6921 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6922 if (tblent->oldval == oldv) {
6923 tblent->newval = newv;
6924 tbl->tbl_items++;
6925 return;
6926 }
6927 }
6928 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6929 tblent->oldval = oldv;
6930 tblent->newval = newv;
6931 tblent->next = *otblent;
6932 *otblent = tblent;
6933 tbl->tbl_items++;
6934 if (i && tbl->tbl_items > tbl->tbl_max)
6935 ptr_table_split(tbl);
6936}
6937
6938void
6939Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6940{
6941 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6942 UV oldsize = tbl->tbl_max + 1;
6943 UV newsize = oldsize * 2;
6944 UV i;
6945
6946 Renew(ary, newsize, PTR_TBL_ENT_t*);
6947 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6948 tbl->tbl_max = --newsize;
6949 tbl->tbl_ary = ary;
6950 for (i=0; i < oldsize; i++, ary++) {
6951 PTR_TBL_ENT_t **curentp, **entp, *ent;
6952 if (!*ary)
6953 continue;
6954 curentp = ary + oldsize;
6955 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 6956 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 6957 *entp = ent->next;
6958 ent->next = *curentp;
6959 *curentp = ent;
6960 continue;
6961 }
6962 else
6963 entp = &ent->next;
6964 }
6965 }
6966}
6967
6968#ifdef DEBUGGING
6969char *PL_watch_pvx;
6970#endif
6971
6972SV *
6973Perl_sv_dup(pTHX_ SV *sstr)
6974{
1d7c1841
GS		 6975 SV *dstr;
6976
6977 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6978 return Nullsv;
6979 /* look for it in the table first */
6980 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6981 if (dstr)
6982 return dstr;
6983
6984 /* create anew and remember what it is */
6985 new_SV(dstr);
6986 ptr_table_store(PL_ptr_table, sstr, dstr);
6987
6988 /* clone */
6989 SvFLAGS(dstr) = SvFLAGS(sstr);
6990 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6991 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6992
6993#ifdef DEBUGGING
6994 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6995 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6996 PL_watch_pvx, SvPVX(sstr));
6997#endif
6998
6999 switch (SvTYPE(sstr)) {
7000 case SVt_NULL:
7001 SvANY(dstr) = NULL;
7002 break;
7003 case SVt_IV:
7004 SvANY(dstr) = new_XIV();
7005 SvIVX(dstr) = SvIVX(sstr);
7006 break;
7007 case SVt_NV:
7008 SvANY(dstr) = new_XNV();
7009 SvNVX(dstr) = SvNVX(sstr);
7010 break;
7011 case SVt_RV:
7012 SvANY(dstr) = new_XRV();
7013 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7014 break;
7015 case SVt_PV:
7016 SvANY(dstr) = new_XPV();
7017 SvCUR(dstr) = SvCUR(sstr);
7018 SvLEN(dstr) = SvLEN(sstr);
7019 if (SvROK(sstr))
7020 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7021 else if (SvPVX(sstr) && SvLEN(sstr))
7022 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7023 else
7024 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7025 break;
7026 case SVt_PVIV:
7027 SvANY(dstr) = new_XPVIV();
7028 SvCUR(dstr) = SvCUR(sstr);
7029 SvLEN(dstr) = SvLEN(sstr);
7030 SvIVX(dstr) = SvIVX(sstr);
7031 if (SvROK(sstr))
7032 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7033 else if (SvPVX(sstr) && SvLEN(sstr))
7034 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7035 else
7036 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7037 break;
7038 case SVt_PVNV:
7039 SvANY(dstr) = new_XPVNV();
7040 SvCUR(dstr) = SvCUR(sstr);
7041 SvLEN(dstr) = SvLEN(sstr);
7042 SvIVX(dstr) = SvIVX(sstr);
7043 SvNVX(dstr) = SvNVX(sstr);
7044 if (SvROK(sstr))
7045 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7046 else if (SvPVX(sstr) && SvLEN(sstr))
7047 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7048 else
7049 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7050 break;
7051 case SVt_PVMG:
7052 SvANY(dstr) = new_XPVMG();
7053 SvCUR(dstr) = SvCUR(sstr);
7054 SvLEN(dstr) = SvLEN(sstr);
7055 SvIVX(dstr) = SvIVX(sstr);
7056 SvNVX(dstr) = SvNVX(sstr);
7057 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7058 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7059 if (SvROK(sstr))
7060 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7061 else if (SvPVX(sstr) && SvLEN(sstr))
7062 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7063 else
7064 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7065 break;
7066 case SVt_PVBM:
7067 SvANY(dstr) = new_XPVBM();
7068 SvCUR(dstr) = SvCUR(sstr);
7069 SvLEN(dstr) = SvLEN(sstr);
7070 SvIVX(dstr) = SvIVX(sstr);
7071 SvNVX(dstr) = SvNVX(sstr);
7072 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7073 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7074 if (SvROK(sstr))
7075 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7076 else if (SvPVX(sstr) && SvLEN(sstr))
7077 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7078 else
7079 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7080 BmRARE(dstr) = BmRARE(sstr);
7081 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7082 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7083 break;
7084 case SVt_PVLV:
7085 SvANY(dstr) = new_XPVLV();
7086 SvCUR(dstr) = SvCUR(sstr);
7087 SvLEN(dstr) = SvLEN(sstr);
7088 SvIVX(dstr) = SvIVX(sstr);
7089 SvNVX(dstr) = SvNVX(sstr);
7090 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7091 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7092 if (SvROK(sstr))
7093 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7094 else if (SvPVX(sstr) && SvLEN(sstr))
7095 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7096 else
7097 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7098 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7099 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7100 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7101 LvTYPE(dstr) = LvTYPE(sstr);
7102 break;
7103 case SVt_PVGV:
7104 SvANY(dstr) = new_XPVGV();
7105 SvCUR(dstr) = SvCUR(sstr);
7106 SvLEN(dstr) = SvLEN(sstr);
7107 SvIVX(dstr) = SvIVX(sstr);
7108 SvNVX(dstr) = SvNVX(sstr);
7109 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7110 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7111 if (SvROK(sstr))
7112 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7113 else if (SvPVX(sstr) && SvLEN(sstr))
7114 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7115 else
7116 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7117 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7118 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7119 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7120 GvFLAGS(dstr) = GvFLAGS(sstr);
7121 GvGP(dstr) = gp_dup(GvGP(sstr));
7122 (void)GpREFCNT_inc(GvGP(dstr));
7123 break;
7124 case SVt_PVIO:
7125 SvANY(dstr) = new_XPVIO();
7126 SvCUR(dstr) = SvCUR(sstr);
7127 SvLEN(dstr) = SvLEN(sstr);
7128 SvIVX(dstr) = SvIVX(sstr);
7129 SvNVX(dstr) = SvNVX(sstr);
7130 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7131 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7132 if (SvROK(sstr))
7133 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7134 else if (SvPVX(sstr) && SvLEN(sstr))
7135 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7136 else
7137 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7138 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7139 if (IoOFP(sstr) == IoIFP(sstr))
7140 IoOFP(dstr) = IoIFP(dstr);
7141 else
7142 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7143 /* PL_rsfp_filters entries have fake IoDIRP() */
7144 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7145 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7146 else
7147 IoDIRP(dstr) = IoDIRP(sstr);
7148 IoLINES(dstr) = IoLINES(sstr);
7149 IoPAGE(dstr) = IoPAGE(sstr);
7150 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7151 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7152 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7153 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7154 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7155 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7156 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7157 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7158 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7159 IoTYPE(dstr) = IoTYPE(sstr);
7160 IoFLAGS(dstr) = IoFLAGS(sstr);
7161 break;
7162 case SVt_PVAV:
7163 SvANY(dstr) = new_XPVAV();
7164 SvCUR(dstr) = SvCUR(sstr);
7165 SvLEN(dstr) = SvLEN(sstr);
7166 SvIVX(dstr) = SvIVX(sstr);
7167 SvNVX(dstr) = SvNVX(sstr);
7168 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7169 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7170 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7171 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7172 if (AvARRAY((AV*)sstr)) {
7173 SV **dst_ary, **src_ary;
7174 SSize_t items = AvFILLp((AV*)sstr) + 1;
7175
7176 src_ary = AvARRAY((AV*)sstr);
7177 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7178 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7179 SvPVX(dstr) = (char*)dst_ary;
7180 AvALLOC((AV*)dstr) = dst_ary;
7181 if (AvREAL((AV*)sstr)) {
7182 while (items-- > 0)
7183 *dst_ary++ = sv_dup_inc(*src_ary++);
7184 }
7185 else {
7186 while (items-- > 0)
7187 *dst_ary++ = sv_dup(*src_ary++);
7188 }
7189 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7190 while (items-- > 0) {
7191 *dst_ary++ = &PL_sv_undef;
7192 }
7193 }
7194 else {
7195 SvPVX(dstr) = Nullch;
7196 AvALLOC((AV*)dstr) = (SV**)NULL;
7197 }
7198 break;
7199 case SVt_PVHV:
7200 SvANY(dstr) = new_XPVHV();
7201 SvCUR(dstr) = SvCUR(sstr);
7202 SvLEN(dstr) = SvLEN(sstr);
7203 SvIVX(dstr) = SvIVX(sstr);
7204 SvNVX(dstr) = SvNVX(sstr);
7205 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7206 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7207 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7208 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7209 STRLEN i = 0;
7210 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7211 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7212 Newz(0, dxhv->xhv_array,
7213 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7214 while (i <= sxhv->xhv_max) {
7215 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7216 !!HvSHAREKEYS(sstr));
7217 ++i;
7218 }
7219 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7220 }
7221 else {
7222 SvPVX(dstr) = Nullch;
7223 HvEITER((HV*)dstr) = (HE*)NULL;
7224 }
7225 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7226 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7227 break;
7228 case SVt_PVFM:
7229 SvANY(dstr) = new_XPVFM();
7230 FmLINES(dstr) = FmLINES(sstr);
7231 goto dup_pvcv;
7232 /* NOTREACHED */
7233 case SVt_PVCV:
7234 SvANY(dstr) = new_XPVCV();
7235dup_pvcv:
7236 SvCUR(dstr) = SvCUR(sstr);
7237 SvLEN(dstr) = SvLEN(sstr);
7238 SvIVX(dstr) = SvIVX(sstr);
7239 SvNVX(dstr) = SvNVX(sstr);
7240 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7241 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7242 if (SvPVX(sstr) && SvLEN(sstr))
7243 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7244 else
7245 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7246 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7247 CvSTART(dstr) = CvSTART(sstr);
7248 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7249 CvXSUB(dstr) = CvXSUB(sstr);
7250 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7251 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7252 CvDEPTH(dstr) = CvDEPTH(sstr);
7253 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7254 /* XXX padlists are real, but pretend to be not */
7255 AvREAL_on(CvPADLIST(sstr));
7256 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7257 AvREAL_off(CvPADLIST(sstr));
7258 AvREAL_off(CvPADLIST(dstr));
7259 }
7260 else
7261 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7262 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7263 CvFLAGS(dstr) = CvFLAGS(sstr);
7264 break;
7265 default:
7266 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7267 break;
7268 }
7269
7270 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7271 ++PL_sv_objcount;
7272
7273 return dstr;
7274}
7275
7276PERL_CONTEXT *
7277Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7278{
7279 PERL_CONTEXT *ncxs;
7280
7281 if (!cxs)
7282 return (PERL_CONTEXT*)NULL;
7283
7284 /* look for it in the table first */
7285 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7286 if (ncxs)
7287 return ncxs;
7288
7289 /* create anew and remember what it is */
7290 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7291 ptr_table_store(PL_ptr_table, cxs, ncxs);
7292
7293 while (ix >= 0) {
7294 PERL_CONTEXT *cx = &cxs[ix];
7295 PERL_CONTEXT *ncx = &ncxs[ix];
7296 ncx->cx_type = cx->cx_type;
7297 if (CxTYPE(cx) == CXt_SUBST) {
7298 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7299 }
7300 else {
7301 ncx->blk_oldsp = cx->blk_oldsp;
7302 ncx->blk_oldcop = cx->blk_oldcop;
7303 ncx->blk_oldretsp = cx->blk_oldretsp;
7304 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7305 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7306 ncx->blk_oldpm = cx->blk_oldpm;
7307 ncx->blk_gimme = cx->blk_gimme;
7308 switch (CxTYPE(cx)) {
7309 case CXt_SUB:
7310 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7311 ? cv_dup_inc(cx->blk_sub.cv)
7312 : cv_dup(cx->blk_sub.cv));
7313 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7314 ? av_dup_inc(cx->blk_sub.argarray)
7315 : Nullav);
7316 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7317 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7318 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7319 ncx->blk_sub.lval = cx->blk_sub.lval;
7320 break;
7321 case CXt_EVAL:
7322 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7323 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 7324 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 7325 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7326 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7327 break;
7328 case CXt_LOOP:
7329 ncx->blk_loop.label = cx->blk_loop.label;
7330 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7331 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7332 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7333 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7334 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7335 ? cx->blk_loop.iterdata
7336 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 7337 ncx->blk_loop.oldcurpad
7338 = (SV**)ptr_table_fetch(PL_ptr_table,
7339 cx->blk_loop.oldcurpad);
1d7c1841
GS		 7340 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7341 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7342 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7343 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7344 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7345 break;
7346 case CXt_FORMAT:
7347 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7348 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7349 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7350 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7351 break;
7352 case CXt_BLOCK:
7353 case CXt_NULL:
7354 break;
7355 }
7356 }
7357 --ix;
7358 }
7359 return ncxs;
7360}
7361
7362PERL_SI *
7363Perl_si_dup(pTHX_ PERL_SI *si)
7364{
7365 PERL_SI *nsi;
7366
7367 if (!si)
7368 return (PERL_SI*)NULL;
7369
7370 /* look for it in the table first */
7371 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7372 if (nsi)
7373 return nsi;
7374
7375 /* create anew and remember what it is */
7376 Newz(56, nsi, 1, PERL_SI);
7377 ptr_table_store(PL_ptr_table, si, nsi);
7378
7379 nsi->si_stack = av_dup_inc(si->si_stack);
7380 nsi->si_cxix = si->si_cxix;
7381 nsi->si_cxmax = si->si_cxmax;
7382 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7383 nsi->si_type = si->si_type;
7384 nsi->si_prev = si_dup(si->si_prev);
7385 nsi->si_next = si_dup(si->si_next);
7386 nsi->si_markoff = si->si_markoff;
7387
7388 return nsi;
7389}
7390
7391#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7392#define TOPINT(ss,ix) ((ss)[ix].any_i32)
7393#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7394#define TOPLONG(ss,ix) ((ss)[ix].any_long)
7395#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7396#define TOPIV(ss,ix) ((ss)[ix].any_iv)
7397#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7398#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7399#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7400#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7401#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7402#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7403
7404/* XXXXX todo */
7405#define pv_dup_inc(p) SAVEPV(p)
7406#define pv_dup(p) SAVEPV(p)
7407#define svp_dup_inc(p,pp) any_dup(p,pp)
7408
7409void *
7410Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7411{
7412 void *ret;
7413
7414 if (!v)
7415 return (void*)NULL;
7416
7417 /* look for it in the table first */
7418 ret = ptr_table_fetch(PL_ptr_table, v);
7419 if (ret)
7420 return ret;
7421
7422 /* see if it is part of the interpreter structure */
7423 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7424 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7425 else
7426 ret = v;
7427
7428 return ret;
7429}
7430
7431ANY *
7432Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7433{
7434 ANY *ss = proto_perl->Tsavestack;
7435 I32 ix = proto_perl->Tsavestack_ix;
7436 I32 max = proto_perl->Tsavestack_max;
7437 ANY *nss;
7438 SV *sv;
7439 GV *gv;
7440 AV *av;
7441 HV *hv;
7442 void* ptr;
7443 int intval;
7444 long longval;
7445 GP *gp;
7446 IV iv;
7447 I32 i;
7448 char *c;
7449 void (*dptr) (void*);
7450 void (*dxptr) (pTHXo_ void*);
e977893f 7451 OP *o;
1d7c1841
GS		 7452
7453 Newz(54, nss, max, ANY);
7454
7455 while (ix > 0) {
7456 i = POPINT(ss,ix);
7457 TOPINT(nss,ix) = i;
7458 switch (i) {
7459 case SAVEt_ITEM: /* normal string */
7460 sv = (SV*)POPPTR(ss,ix);
7461 TOPPTR(nss,ix) = sv_dup_inc(sv);
7462 sv = (SV*)POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = sv_dup_inc(sv);
7464 break;
7465 case SAVEt_SV: /* scalar reference */
7466 sv = (SV*)POPPTR(ss,ix);
7467 TOPPTR(nss,ix) = sv_dup_inc(sv);
7468 gv = (GV*)POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = gv_dup_inc(gv);
7470 break;
f4dd75d9
GS		 7471 case SAVEt_GENERIC_PVREF: /* generic char* */
7472 c = (char*)POPPTR(ss,ix);
7473 TOPPTR(nss,ix) = pv_dup(c);
7474 ptr = POPPTR(ss,ix);
7475 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7476 break;
1d7c1841
GS		 7477 case SAVEt_GENERIC_SVREF: /* generic sv */
7478 case SAVEt_SVREF: /* scalar reference */
7479 sv = (SV*)POPPTR(ss,ix);
7480 TOPPTR(nss,ix) = sv_dup_inc(sv);
7481 ptr = POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7483 break;
7484 case SAVEt_AV: /* array reference */
7485 av = (AV*)POPPTR(ss,ix);
7486 TOPPTR(nss,ix) = av_dup_inc(av);
7487 gv = (GV*)POPPTR(ss,ix);
7488 TOPPTR(nss,ix) = gv_dup(gv);
7489 break;
7490 case SAVEt_HV: /* hash reference */
7491 hv = (HV*)POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = hv_dup_inc(hv);
7493 gv = (GV*)POPPTR(ss,ix);
7494 TOPPTR(nss,ix) = gv_dup(gv);
7495 break;
7496 case SAVEt_INT: /* int reference */
7497 ptr = POPPTR(ss,ix);
7498 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7499 intval = (int)POPINT(ss,ix);
7500 TOPINT(nss,ix) = intval;
7501 break;
7502 case SAVEt_LONG: /* long reference */
7503 ptr = POPPTR(ss,ix);
7504 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7505 longval = (long)POPLONG(ss,ix);
7506 TOPLONG(nss,ix) = longval;
7507 break;
7508 case SAVEt_I32: /* I32 reference */
7509 case SAVEt_I16: /* I16 reference */
7510 case SAVEt_I8: /* I8 reference */
7511 ptr = POPPTR(ss,ix);
7512 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7513 i = POPINT(ss,ix);
7514 TOPINT(nss,ix) = i;
7515 break;
7516 case SAVEt_IV: /* IV reference */
7517 ptr = POPPTR(ss,ix);
7518 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7519 iv = POPIV(ss,ix);
7520 TOPIV(nss,ix) = iv;
7521 break;
7522 case SAVEt_SPTR: /* SV* reference */
7523 ptr = POPPTR(ss,ix);
7524 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7525 sv = (SV*)POPPTR(ss,ix);
7526 TOPPTR(nss,ix) = sv_dup(sv);
7527 break;
7528 case SAVEt_VPTR: /* random* reference */
7529 ptr = POPPTR(ss,ix);
7530 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7531 ptr = POPPTR(ss,ix);
7532 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7533 break;
7534 case SAVEt_PPTR: /* char* reference */
7535 ptr = POPPTR(ss,ix);
7536 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7537 c = (char*)POPPTR(ss,ix);
7538 TOPPTR(nss,ix) = pv_dup(c);
7539 break;
7540 case SAVEt_HPTR: /* HV* reference */
7541 ptr = POPPTR(ss,ix);
7542 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7543 hv = (HV*)POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = hv_dup(hv);
7545 break;
7546 case SAVEt_APTR: /* AV* reference */
7547 ptr = POPPTR(ss,ix);
7548 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7549 av = (AV*)POPPTR(ss,ix);
7550 TOPPTR(nss,ix) = av_dup(av);
7551 break;
7552 case SAVEt_NSTAB:
7553 gv = (GV*)POPPTR(ss,ix);
7554 TOPPTR(nss,ix) = gv_dup(gv);
7555 break;
7556 case SAVEt_GP: /* scalar reference */
7557 gp = (GP*)POPPTR(ss,ix);
7558 TOPPTR(nss,ix) = gp = gp_dup(gp);
7559 (void)GpREFCNT_inc(gp);
7560 gv = (GV*)POPPTR(ss,ix);
7561 TOPPTR(nss,ix) = gv_dup_inc(c);
7562 c = (char*)POPPTR(ss,ix);
7563 TOPPTR(nss,ix) = pv_dup(c);
7564 iv = POPIV(ss,ix);
7565 TOPIV(nss,ix) = iv;
7566 iv = POPIV(ss,ix);
7567 TOPIV(nss,ix) = iv;
7568 break;
7569 case SAVEt_FREESV:
7570 sv = (SV*)POPPTR(ss,ix);
7571 TOPPTR(nss,ix) = sv_dup_inc(sv);
7572 break;
7573 case SAVEt_FREEOP:
7574 ptr = POPPTR(ss,ix);
7575 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7576 /* these are assumed to be refcounted properly */
7577 switch (((OP*)ptr)->op_type) {
7578 case OP_LEAVESUB:
7579 case OP_LEAVESUBLV:
7580 case OP_LEAVEEVAL:
7581 case OP_LEAVE:
7582 case OP_SCOPE:
7583 case OP_LEAVEWRITE:
e977893f
GS		 7584 TOPPTR(nss,ix) = ptr;
7585 o = (OP*)ptr;
7586 OpREFCNT_inc(o);
1d7c1841
GS		 7587 break;
7588 default:
7589 TOPPTR(nss,ix) = Nullop;
7590 break;
7591 }
7592 }
7593 else
7594 TOPPTR(nss,ix) = Nullop;
7595 break;
7596 case SAVEt_FREEPV:
7597 c = (char*)POPPTR(ss,ix);
7598 TOPPTR(nss,ix) = pv_dup_inc(c);
7599 break;
7600 case SAVEt_CLEARSV:
7601 longval = POPLONG(ss,ix);
7602 TOPLONG(nss,ix) = longval;
7603 break;
7604 case SAVEt_DELETE:
7605 hv = (HV*)POPPTR(ss,ix);
7606 TOPPTR(nss,ix) = hv_dup_inc(hv);
7607 c = (char*)POPPTR(ss,ix);
7608 TOPPTR(nss,ix) = pv_dup_inc(c);
7609 i = POPINT(ss,ix);
7610 TOPINT(nss,ix) = i;
7611 break;
7612 case SAVEt_DESTRUCTOR:
7613 ptr = POPPTR(ss,ix);
7614 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7615 dptr = POPDPTR(ss,ix);
ef75a179 7616 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 7617 break;
7618 case SAVEt_DESTRUCTOR_X:
7619 ptr = POPPTR(ss,ix);
7620 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7621 dxptr = POPDXPTR(ss,ix);
ef75a179 7622 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 7623 break;
7624 case SAVEt_REGCONTEXT:
7625 case SAVEt_ALLOC:
7626 i = POPINT(ss,ix);
7627 TOPINT(nss,ix) = i;
7628 ix -= i;
7629 break;
7630 case SAVEt_STACK_POS: /* Position on Perl stack */
7631 i = POPINT(ss,ix);
7632 TOPINT(nss,ix) = i;
7633 break;
7634 case SAVEt_AELEM: /* array element */
7635 sv = (SV*)POPPTR(ss,ix);
7636 TOPPTR(nss,ix) = sv_dup_inc(sv);
7637 i = POPINT(ss,ix);
7638 TOPINT(nss,ix) = i;
7639 av = (AV*)POPPTR(ss,ix);
7640 TOPPTR(nss,ix) = av_dup_inc(av);
7641 break;
7642 case SAVEt_HELEM: /* hash element */
7643 sv = (SV*)POPPTR(ss,ix);
7644 TOPPTR(nss,ix) = sv_dup_inc(sv);
7645 sv = (SV*)POPPTR(ss,ix);
7646 TOPPTR(nss,ix) = sv_dup_inc(sv);
7647 hv = (HV*)POPPTR(ss,ix);
7648 TOPPTR(nss,ix) = hv_dup_inc(hv);
7649 break;
7650 case SAVEt_OP:
7651 ptr = POPPTR(ss,ix);
7652 TOPPTR(nss,ix) = ptr;
7653 break;
7654 case SAVEt_HINTS:
7655 i = POPINT(ss,ix);
7656 TOPINT(nss,ix) = i;
7657 break;
c4410b1b
GS		 7658 case SAVEt_COMPPAD:
7659 av = (AV*)POPPTR(ss,ix);
7660 TOPPTR(nss,ix) = av_dup(av);
7661 break;
1d7c1841
GS		 7662 default:
7663 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7664 }
7665 }
7666
7667 return nss;
7668}
7669
7670#ifdef PERL_OBJECT
7671#include "XSUB.h"
7672#endif
7673
7674PerlInterpreter *
7675perl_clone(PerlInterpreter *proto_perl, UV flags)
7676{
7677#ifdef PERL_OBJECT
7678 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7679#endif
7680
7681#ifdef PERL_IMPLICIT_SYS
7682 return perl_clone_using(proto_perl, flags,
7683 proto_perl->IMem,
7684 proto_perl->IMemShared,
7685 proto_perl->IMemParse,
7686 proto_perl->IEnv,
7687 proto_perl->IStdIO,
7688 proto_perl->ILIO,
7689 proto_perl->IDir,
7690 proto_perl->ISock,
7691 proto_perl->IProc);
7692}
7693
7694PerlInterpreter *
7695perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7696 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7697 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7698 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7699 struct IPerlDir* ipD, struct IPerlSock* ipS,
7700 struct IPerlProc* ipP)
7701{
7702 /* XXX many of the string copies here can be optimized if they're
7703 * constants; they need to be allocated as common memory and just
7704 * their pointers copied. */
7705
7706 IV i;
1d7c1841
GS		 7707# ifdef PERL_OBJECT
7708 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7709 ipD, ipS, ipP);
ba869deb 7710 PERL_SET_THX(pPerl);
1d7c1841
GS		 7711# else /* !PERL_OBJECT */
7712 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 7713 PERL_SET_THX(my_perl);
1d7c1841
GS		 7714
7715# ifdef DEBUGGING
7716 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7717 PL_markstack = 0;
7718 PL_scopestack = 0;
7719 PL_savestack = 0;
7720 PL_retstack = 0;
7721# else /* !DEBUGGING */
7722 Zero(my_perl, 1, PerlInterpreter);
7723# endif /* DEBUGGING */
7724
7725 /* host pointers */
7726 PL_Mem = ipM;
7727 PL_MemShared = ipMS;
7728 PL_MemParse = ipMP;
7729 PL_Env = ipE;
7730 PL_StdIO = ipStd;
7731 PL_LIO = ipLIO;
7732 PL_Dir = ipD;
7733 PL_Sock = ipS;
7734 PL_Proc = ipP;
7735# endif /* PERL_OBJECT */
7736#else /* !PERL_IMPLICIT_SYS */
7737 IV i;
1d7c1841 7738 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 7739 PERL_SET_THX(my_perl);
1d7c1841
GS		 7740
7741# ifdef DEBUGGING
7742 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7743 PL_markstack = 0;
7744 PL_scopestack = 0;
7745 PL_savestack = 0;
7746 PL_retstack = 0;
7747# else /* !DEBUGGING */
7748 Zero(my_perl, 1, PerlInterpreter);
7749# endif /* DEBUGGING */
7750#endif /* PERL_IMPLICIT_SYS */
7751
7752 /* arena roots */
7753 PL_xiv_arenaroot = NULL;
7754 PL_xiv_root = NULL;
612f20c3 7755 PL_xnv_arenaroot = NULL;
1d7c1841 7756 PL_xnv_root = NULL;
612f20c3 7757 PL_xrv_arenaroot = NULL;
1d7c1841 7758 PL_xrv_root = NULL;
612f20c3 7759 PL_xpv_arenaroot = NULL;
1d7c1841 7760 PL_xpv_root = NULL;
612f20c3 7761 PL_xpviv_arenaroot = NULL;
1d7c1841 7762 PL_xpviv_root = NULL;
612f20c3 7763 PL_xpvnv_arenaroot = NULL;
1d7c1841 7764 PL_xpvnv_root = NULL;
612f20c3 7765 PL_xpvcv_arenaroot = NULL;
1d7c1841 7766 PL_xpvcv_root = NULL;
612f20c3 7767 PL_xpvav_arenaroot = NULL;
1d7c1841 7768 PL_xpvav_root = NULL;
612f20c3 7769 PL_xpvhv_arenaroot = NULL;
1d7c1841 7770 PL_xpvhv_root = NULL;
612f20c3 7771 PL_xpvmg_arenaroot = NULL;
1d7c1841 7772 PL_xpvmg_root = NULL;
612f20c3 7773 PL_xpvlv_arenaroot = NULL;
1d7c1841 7774 PL_xpvlv_root = NULL;
612f20c3 7775 PL_xpvbm_arenaroot = NULL;
1d7c1841 7776 PL_xpvbm_root = NULL;
612f20c3 7777 PL_he_arenaroot = NULL;
1d7c1841
GS		 7778 PL_he_root = NULL;
7779 PL_nice_chunk = NULL;
7780 PL_nice_chunk_size = 0;
7781 PL_sv_count = 0;
7782 PL_sv_objcount = 0;
7783 PL_sv_root = Nullsv;
7784 PL_sv_arenaroot = Nullsv;
7785
7786 PL_debug = proto_perl->Idebug;
7787
7788 /* create SV map for pointer relocation */
7789 PL_ptr_table = ptr_table_new();
7790
7791 /* initialize these special pointers as early as possible */
7792 SvANY(&PL_sv_undef) = NULL;
7793 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7794 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7795 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7796
7797#ifdef PERL_OBJECT
7798 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7799#else
7800 SvANY(&PL_sv_no) = new_XPVNV();
7801#endif
7802 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7803 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7804 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7805 SvCUR(&PL_sv_no) = 0;
7806 SvLEN(&PL_sv_no) = 1;
7807 SvNVX(&PL_sv_no) = 0;
7808 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7809
7810#ifdef PERL_OBJECT
7811 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7812#else
7813 SvANY(&PL_sv_yes) = new_XPVNV();
7814#endif
7815 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7816 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7817 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7818 SvCUR(&PL_sv_yes) = 1;
7819 SvLEN(&PL_sv_yes) = 2;
7820 SvNVX(&PL_sv_yes) = 1;
7821 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7822
7823 /* create shared string table */
7824 PL_strtab = newHV();
7825 HvSHAREKEYS_off(PL_strtab);
7826 hv_ksplit(PL_strtab, 512);
7827 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7828
7829 PL_compiling = proto_perl->Icompiling;
7830 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7831 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7832 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7833 if (!specialWARN(PL_compiling.cop_warnings))
7834 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
ac27b0f5
NIS		 7835 if (!specialCopIO(PL_compiling.cop_io))
7836 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
1d7c1841
GS		 7837 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7838
7839 /* pseudo environmental stuff */
7840 PL_origargc = proto_perl->Iorigargc;
7841 i = PL_origargc;
7842 New(0, PL_origargv, i+1, char*);
7843 PL_origargv[i] = '\0';
7844 while (i-- > 0) {
7845 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7846 }
7847 PL_envgv = gv_dup(proto_perl->Ienvgv);
7848 PL_incgv = gv_dup(proto_perl->Iincgv);
7849 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7850 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7851 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7852 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7853
7854 /* switches */
7855 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 7856 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 7857 PL_localpatches = proto_perl->Ilocalpatches;
7858 PL_splitstr = proto_perl->Isplitstr;
7859 PL_preprocess = proto_perl->Ipreprocess;
7860 PL_minus_n = proto_perl->Iminus_n;
7861 PL_minus_p = proto_perl->Iminus_p;
7862 PL_minus_l = proto_perl->Iminus_l;
7863 PL_minus_a = proto_perl->Iminus_a;
7864 PL_minus_F = proto_perl->Iminus_F;
7865 PL_doswitches = proto_perl->Idoswitches;
7866 PL_dowarn = proto_perl->Idowarn;
7867 PL_doextract = proto_perl->Idoextract;
7868 PL_sawampersand = proto_perl->Isawampersand;
7869 PL_unsafe = proto_perl->Iunsafe;
7870 PL_inplace = SAVEPV(proto_perl->Iinplace);
7871 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7872 PL_perldb = proto_perl->Iperldb;
7873 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7874
7875 /* magical thingies */
7876 /* XXX time(&PL_basetime) when asked for? */
7877 PL_basetime = proto_perl->Ibasetime;
7878 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7879
7880 PL_maxsysfd = proto_perl->Imaxsysfd;
7881 PL_multiline = proto_perl->Imultiline;
7882 PL_statusvalue = proto_perl->Istatusvalue;
7883#ifdef VMS
7884 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7885#endif
7886
7887 /* shortcuts to various I/O objects */
7888 PL_stdingv = gv_dup(proto_perl->Istdingv);
7889 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7890 PL_defgv = gv_dup(proto_perl->Idefgv);
7891 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7892 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7893 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7894
7895 /* shortcuts to regexp stuff */
7896 PL_replgv = gv_dup(proto_perl->Ireplgv);
7897
7898 /* shortcuts to misc objects */
7899 PL_errgv = gv_dup(proto_perl->Ierrgv);
7900
7901 /* shortcuts to debugging objects */
7902 PL_DBgv = gv_dup(proto_perl->IDBgv);
7903 PL_DBline = gv_dup(proto_perl->IDBline);
7904 PL_DBsub = gv_dup(proto_perl->IDBsub);
7905 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7906 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7907 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7908 PL_lineary = av_dup(proto_perl->Ilineary);
7909 PL_dbargs = av_dup(proto_perl->Idbargs);
7910
7911 /* symbol tables */
7912 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7913 PL_curstash = hv_dup(proto_perl->Tcurstash);
7914 PL_debstash = hv_dup(proto_perl->Idebstash);
7915 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7916 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7917
7918 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7919 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 7920 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 7921 PL_initav = av_dup_inc(proto_perl->Iinitav);
7922
7923 PL_sub_generation = proto_perl->Isub_generation;
7924
7925 /* funky return mechanisms */
7926 PL_forkprocess = proto_perl->Iforkprocess;
7927
7928 /* subprocess state */
7929 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7930
7931 /* internal state */
7932 PL_tainting = proto_perl->Itainting;
7933 PL_maxo = proto_perl->Imaxo;
7934 if (proto_perl->Iop_mask)
7935 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7936 else
7937 PL_op_mask = Nullch;
7938
7939 /* current interpreter roots */
7940 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7941 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7942 PL_main_start = proto_perl->Imain_start;
e977893f 7943 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 7944 PL_eval_start = proto_perl->Ieval_start;
7945
7946 /* runtime control stuff */
7947 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7948 PL_copline = proto_perl->Icopline;
7949
7950 PL_filemode = proto_perl->Ifilemode;
7951 PL_lastfd = proto_perl->Ilastfd;
7952 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7953 PL_Argv = NULL;
7954 PL_Cmd = Nullch;
7955 PL_gensym = proto_perl->Igensym;
7956 PL_preambled = proto_perl->Ipreambled;
7957 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7958 PL_laststatval = proto_perl->Ilaststatval;
7959 PL_laststype = proto_perl->Ilaststype;
7960 PL_mess_sv = Nullsv;
7961
7962 PL_orslen = proto_perl->Iorslen;
7963 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7964 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7965
7966 /* interpreter atexit processing */
7967 PL_exitlistlen = proto_perl->Iexitlistlen;
7968 if (PL_exitlistlen) {
7969 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7970 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7971 }
7972 else
7973 PL_exitlist = (PerlExitListEntry*)NULL;
7974 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7975
7976 PL_profiledata = NULL;
7977 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7978 /* PL_rsfp_filters entries have fake IoDIRP() */
7979 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7980
7981 PL_compcv = cv_dup(proto_perl->Icompcv);
7982 PL_comppad = av_dup(proto_perl->Icomppad);
7983 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7984 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7985 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7986 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7987 proto_perl->Tcurpad);
7988
7989#ifdef HAVE_INTERP_INTERN
7990 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7991#endif
7992
7993 /* more statics moved here */
7994 PL_generation = proto_perl->Igeneration;
7995 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 7996
7997 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7998 PL_in_clean_all = proto_perl->Iin_clean_all;
7999
8000 PL_uid = proto_perl->Iuid;
8001 PL_euid = proto_perl->Ieuid;
8002 PL_gid = proto_perl->Igid;
8003 PL_egid = proto_perl->Iegid;
8004 PL_nomemok = proto_perl->Inomemok;
8005 PL_an = proto_perl->Ian;
8006 PL_cop_seqmax = proto_perl->Icop_seqmax;
8007 PL_op_seqmax = proto_perl->Iop_seqmax;
8008 PL_evalseq = proto_perl->Ievalseq;
8009 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8010 PL_origalen = proto_perl->Iorigalen;
8011 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8012 PL_osname = SAVEPV(proto_perl->Iosname);
8013 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8014 PL_sighandlerp = proto_perl->Isighandlerp;
8015
8016
8017 PL_runops = proto_perl->Irunops;
8018
8019 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8020
8021#ifdef CSH
8022 PL_cshlen = proto_perl->Icshlen;
8023 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8024#endif
8025
8026 PL_lex_state = proto_perl->Ilex_state;
8027 PL_lex_defer = proto_perl->Ilex_defer;
8028 PL_lex_expect = proto_perl->Ilex_expect;
8029 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8030 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8031 PL_lex_starts = proto_perl->Ilex_starts;
8032 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8033 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8034 PL_lex_op = proto_perl->Ilex_op;
8035 PL_lex_inpat = proto_perl->Ilex_inpat;
8036 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8037 PL_lex_brackets = proto_perl->Ilex_brackets;
8038 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8039 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8040 PL_lex_casemods = proto_perl->Ilex_casemods;
8041 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8042 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8043
8044 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8045 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8046 PL_nexttoke = proto_perl->Inexttoke;
8047
8048 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8049 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8050 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8051 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8052 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8053 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8054 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8055 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8056 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8057 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8058 PL_pending_ident = proto_perl->Ipending_ident;
8059 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8060
8061 PL_expect = proto_perl->Iexpect;
8062
8063 PL_multi_start = proto_perl->Imulti_start;
8064 PL_multi_end = proto_perl->Imulti_end;
8065 PL_multi_open = proto_perl->Imulti_open;
8066 PL_multi_close = proto_perl->Imulti_close;
8067
8068 PL_error_count = proto_perl->Ierror_count;
8069 PL_subline = proto_perl->Isubline;
8070 PL_subname = sv_dup_inc(proto_perl->Isubname);
8071
8072 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8073 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8074 PL_padix = proto_perl->Ipadix;
8075 PL_padix_floor = proto_perl->Ipadix_floor;
8076 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8077
8078 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8079 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8080 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8081 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8082 PL_last_lop_op = proto_perl->Ilast_lop_op;
8083 PL_in_my = proto_perl->Iin_my;
8084 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8085#ifdef FCRYPT
8086 PL_cryptseen = proto_perl->Icryptseen;
8087#endif
8088
8089 PL_hints = proto_perl->Ihints;
8090
8091 PL_amagic_generation = proto_perl->Iamagic_generation;
8092
8093#ifdef USE_LOCALE_COLLATE
8094 PL_collation_ix = proto_perl->Icollation_ix;
8095 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8096 PL_collation_standard = proto_perl->Icollation_standard;
8097 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8098 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8099#endif /* USE_LOCALE_COLLATE */
8100
8101#ifdef USE_LOCALE_NUMERIC
8102 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8103 PL_numeric_standard = proto_perl->Inumeric_standard;
8104 PL_numeric_local = proto_perl->Inumeric_local;
8105 PL_numeric_radix = proto_perl->Inumeric_radix;
8106#endif /* !USE_LOCALE_NUMERIC */
8107
8108 /* utf8 character classes */
8109 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8110 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8111 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8112 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8113 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8114 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8115 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8116 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8117 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8118 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8119 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8120 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8121 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8122 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8123 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8124 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8125 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8126
8127 /* swatch cache */
8128 PL_last_swash_hv = Nullhv; /* reinits on demand */
8129 PL_last_swash_klen = 0;
8130 PL_last_swash_key[0]= '\0';
8131 PL_last_swash_tmps = (U8*)NULL;
8132 PL_last_swash_slen = 0;
8133
8134 /* perly.c globals */
8135 PL_yydebug = proto_perl->Iyydebug;
8136 PL_yynerrs = proto_perl->Iyynerrs;
8137 PL_yyerrflag = proto_perl->Iyyerrflag;
8138 PL_yychar = proto_perl->Iyychar;
8139 PL_yyval = proto_perl->Iyyval;
8140 PL_yylval = proto_perl->Iyylval;
8141
8142 PL_glob_index = proto_perl->Iglob_index;
8143 PL_srand_called = proto_perl->Isrand_called;
8144 PL_uudmap['M'] = 0; /* reinits on demand */
8145 PL_bitcount = Nullch; /* reinits on demand */
8146
8147 if (proto_perl->Ipsig_ptr) {
8148 int sig_num[] = { SIG_NUM };
8149 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8150 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8151 for (i = 1; PL_sig_name[i]; i++) {
8152 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8153 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8154 }
8155 }
8156 else {
8157 PL_psig_ptr = (SV**)NULL;
8158 PL_psig_name = (SV**)NULL;
8159 }
8160
8161 /* thrdvar.h stuff */
8162
8163 if (flags & 1) {
8164 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8165 PL_tmps_ix = proto_perl->Ttmps_ix;
8166 PL_tmps_max = proto_perl->Ttmps_max;
8167 PL_tmps_floor = proto_perl->Ttmps_floor;
8168 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8169 i = 0;
8170 while (i <= PL_tmps_ix) {
8171 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8172 ++i;
8173 }
8174
8175 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8176 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8177 Newz(54, PL_markstack, i, I32);
8178 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8179 - proto_perl->Tmarkstack);
8180 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8181 - proto_perl->Tmarkstack);
8182 Copy(proto_perl->Tmarkstack, PL_markstack,
8183 PL_markstack_ptr - PL_markstack + 1, I32);
8184
8185 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8186 * NOTE: unlike the others! */
8187 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8188 PL_scopestack_max = proto_perl->Tscopestack_max;
8189 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8190 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8191
8192 /* next push_return() sets PL_retstack[PL_retstack_ix]
8193 * NOTE: unlike the others! */
8194 PL_retstack_ix = proto_perl->Tretstack_ix;
8195 PL_retstack_max = proto_perl->Tretstack_max;
8196 Newz(54, PL_retstack, PL_retstack_max, OP*);
8197 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8198
8199 /* NOTE: si_dup() looks at PL_markstack */
8200 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8201
8202 /* PL_curstack = PL_curstackinfo->si_stack; */
8203 PL_curstack = av_dup(proto_perl->Tcurstack);
8204 PL_mainstack = av_dup(proto_perl->Tmainstack);
8205
8206 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8207 PL_stack_base = AvARRAY(PL_curstack);
8208 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8209 - proto_perl->Tstack_base);
8210 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8211
8212 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8213 * NOTE: unlike the others! */
8214 PL_savestack_ix = proto_perl->Tsavestack_ix;
8215 PL_savestack_max = proto_perl->Tsavestack_max;
8216 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8217 PL_savestack = ss_dup(proto_perl);
8218 }
8219 else {
8220 init_stacks();
985e7056 8221 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8222 }
8223
8224 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8225 PL_top_env = &PL_start_env;
8226
8227 PL_op = proto_perl->Top;
8228
8229 PL_Sv = Nullsv;
8230 PL_Xpv = (XPV*)NULL;
8231 PL_na = proto_perl->Tna;
8232
8233 PL_statbuf = proto_perl->Tstatbuf;
8234 PL_statcache = proto_perl->Tstatcache;
8235 PL_statgv = gv_dup(proto_perl->Tstatgv);
8236 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8237#ifdef HAS_TIMES
8238 PL_timesbuf = proto_perl->Ttimesbuf;
8239#endif
8240
8241 PL_tainted = proto_perl->Ttainted;
8242 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8243 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8244 PL_rs = sv_dup_inc(proto_perl->Trs);
8245 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8246 PL_ofslen = proto_perl->Tofslen;
8247 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8248 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8249 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8250 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8251 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8252 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8253
8254 PL_restartop = proto_perl->Trestartop;
8255 PL_in_eval = proto_perl->Tin_eval;
8256 PL_delaymagic = proto_perl->Tdelaymagic;
8257 PL_dirty = proto_perl->Tdirty;
8258 PL_localizing = proto_perl->Tlocalizing;
8259
14dd3ad8 8260#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 8261 PL_protect = proto_perl->Tprotect;
14dd3ad8 8262#endif
1d7c1841
GS		 8263 PL_errors = sv_dup_inc(proto_perl->Terrors);
8264 PL_av_fetch_sv = Nullsv;
8265 PL_hv_fetch_sv = Nullsv;
8266 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8267 PL_modcount = proto_perl->Tmodcount;
8268 PL_lastgotoprobe = Nullop;
8269 PL_dumpindent = proto_perl->Tdumpindent;
8270
8271 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8272 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8273 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8274 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8275 PL_sortcxix = proto_perl->Tsortcxix;
8276 PL_efloatbuf = Nullch; /* reinits on demand */
8277 PL_efloatsize = 0; /* reinits on demand */
8278
8279 /* regex stuff */
8280
8281 PL_screamfirst = NULL;
8282 PL_screamnext = NULL;
8283 PL_maxscream = -1; /* reinits on demand */
8284 PL_lastscream = Nullsv;
8285
8286 PL_watchaddr = NULL;
8287 PL_watchok = Nullch;
8288
8289 PL_regdummy = proto_perl->Tregdummy;
8290 PL_regcomp_parse = Nullch;
8291 PL_regxend = Nullch;
8292 PL_regcode = (regnode*)NULL;
8293 PL_regnaughty = 0;
8294 PL_regsawback = 0;
8295 PL_regprecomp = Nullch;
8296 PL_regnpar = 0;
8297 PL_regsize = 0;
8298 PL_regflags = 0;
8299 PL_regseen = 0;
8300 PL_seen_zerolen = 0;
8301 PL_seen_evals = 0;
8302 PL_regcomp_rx = (regexp*)NULL;
8303 PL_extralen = 0;
8304 PL_colorset = 0; /* reinits PL_colors[] */
8305 /*PL_colors[6] = {0,0,0,0,0,0};*/
8306 PL_reg_whilem_seen = 0;
8307 PL_reginput = Nullch;
8308 PL_regbol = Nullch;
8309 PL_regeol = Nullch;
8310 PL_regstartp = (I32*)NULL;
8311 PL_regendp = (I32*)NULL;
8312 PL_reglastparen = (U32*)NULL;
8313 PL_regtill = Nullch;
8314 PL_regprev = '\n';
8315 PL_reg_start_tmp = (char**)NULL;
8316 PL_reg_start_tmpl = 0;
8317 PL_regdata = (struct reg_data*)NULL;
8318 PL_bostr = Nullch;
8319 PL_reg_flags = 0;
8320 PL_reg_eval_set = 0;
8321 PL_regnarrate = 0;
8322 PL_regprogram = (regnode*)NULL;
8323 PL_regindent = 0;
8324 PL_regcc = (CURCUR*)NULL;
8325 PL_reg_call_cc = (struct re_cc_state*)NULL;
8326 PL_reg_re = (regexp*)NULL;
8327 PL_reg_ganch = Nullch;
8328 PL_reg_sv = Nullsv;
8329 PL_reg_magic = (MAGIC*)NULL;
8330 PL_reg_oldpos = 0;
8331 PL_reg_oldcurpm = (PMOP*)NULL;
8332 PL_reg_curpm = (PMOP*)NULL;
8333 PL_reg_oldsaved = Nullch;
8334 PL_reg_oldsavedlen = 0;
8335 PL_reg_maxiter = 0;
8336 PL_reg_leftiter = 0;
8337 PL_reg_poscache = Nullch;
8338 PL_reg_poscache_size= 0;
8339
8340 /* RE engine - function pointers */
8341 PL_regcompp = proto_perl->Tregcompp;
8342 PL_regexecp = proto_perl->Tregexecp;
8343 PL_regint_start = proto_perl->Tregint_start;
8344 PL_regint_string = proto_perl->Tregint_string;
8345 PL_regfree = proto_perl->Tregfree;
8346
8347 PL_reginterp_cnt = 0;
8348 PL_reg_starttry = 0;
8349
8350#ifdef PERL_OBJECT
8351 return (PerlInterpreter*)pPerl;
8352#else
8353 return my_perl;
8354#endif
8355}
8356
8357#else /* !USE_ITHREADS */
51371543
GS		 8358
8359#ifdef PERL_OBJECT
51371543
GS		 8360#include "XSUB.h"
8361#endif
8362
1d7c1841
GS		 8363#endif /* USE_ITHREADS */
8364
51371543
GS		 8365static void
8366do_report_used(pTHXo_ SV *sv)
8367{
8368 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 8369 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 8370 sv_dump(sv);
8371 }
8372}
8373
8374static void
8375do_clean_objs(pTHXo_ SV *sv)
8376{
8377 SV* rv;
8378
8379 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8380 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8b6e653b
HS		 8381 if (SvWEAKREF(sv)) {
8382 sv_del_backref(sv);
8383 SvWEAKREF_off(sv);
8384 SvRV(sv) = 0;
8385 } else {
8386 SvROK_off(sv);
8387 SvRV(sv) = 0;
8388 SvREFCNT_dec(rv);
8389 }
51371543
GS		 8390 }
8391
8392 /* XXX Might want to check arrays, etc. */
8393}
8394
8395#ifndef DISABLE_DESTRUCTOR_KLUDGE
8396static void
8397do_clean_named_objs(pTHXo_ SV *sv)
8398{
f472eb5c 8399 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 8400 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 8401 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8402 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8403 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8404 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 8405 {
8406 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8407 SvREFCNT_dec(sv);
8408 }
8409 }
8410}
8411#endif
8412
8413static void
8414do_clean_all(pTHXo_ SV *sv)
8415{
1d7c1841 8416 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 8417 SvFLAGS(sv) |= SVf_BREAK;
8418 SvREFCNT_dec(sv);
8419}
8af02333 8420
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