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__FUNCTION__ isn't portable and trying to emulate it leads
[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;
99938567 2013 s++;
300aed98
JH		 2014 }
2015 sawinf = 1;
2016 }
ff0cee69 2017 else
2018 return 0;
2019
300aed98
JH		 2020 if (sawinf)
2021 numtype = IS_NUMBER_INFINITY;
2022 else {
2023 /* we can have an optional exponent part */
2024 if (*s == 'e' || *s == 'E') {
2025 numtype &= ~IS_NUMBER_NEG;
2026 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
36477c24 2027 s++;
300aed98
JH		 2028 if (*s == '+' || *s == '-')
2029 s++;
2030 if (isDIGIT(*s)) {
2031 do {
2032 s++;
2033 } while (isDIGIT(*s));
2034 }
2035 else
2036 return 0;
2037 }
36477c24 2038 }
2039 while (isSPACE(*s))
2040 s++;
2041 if (s >= send)
2042 return numtype;
2043 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2044 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2045 return 0;
2046}
2047
79072805 2048char *
864dbfa3 2049Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2050{
2051 STRLEN n_a;
2052 return sv_2pv(sv, &n_a);
2053}
2054
25da4f38 2055/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2056static char *
25da4f38
IZ		 2057uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2058{
25da4f38
IZ		 2059 char *ptr = buf + TYPE_CHARS(UV);
2060 char *ebuf = ptr;
2061 int sign;
25da4f38
IZ		 2062
2063 if (is_uv)
2064 sign = 0;
2065 else if (iv >= 0) {
2066 uv = iv;
2067 sign = 0;
2068 } else {
2069 uv = -iv;
2070 sign = 1;
2071 }
2072 do {
2073 *--ptr = '0' + (uv % 10);
2074 } while (uv /= 10);
2075 if (sign)
2076 *--ptr = '-';
2077 *peob = ebuf;
2078 return ptr;
2079}
2080
1fa8b10d 2081char *
864dbfa3 2082Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2083{
2084 register char *s;
2085 int olderrno;
46fc3d4c 2086 SV *tsv;
25da4f38
IZ		 2087 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2088 char *tmpbuf = tbuf;
79072805 2089
463ee0b2
LW		 2090 if (!sv) {
2091 *lp = 0;
2092 return "";
2093 }
8990e307 2094 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2095 mg_get(sv);
2096 if (SvPOKp(sv)) {
2097 *lp = SvCUR(sv);
2098 return SvPVX(sv);
2099 }
cf2093f6 2100 if (SvIOKp(sv)) {
1c846c1f 2101 if (SvIsUV(sv))
57def98f 2102 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2103 else
57def98f 2104 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2105 tsv = Nullsv;
a0d0e21e 2106 goto tokensave;
463ee0b2
LW		 2107 }
2108 if (SvNOKp(sv)) {
2d4389e4 2109 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2110 tsv = Nullsv;
a0d0e21e 2111 goto tokensave;
463ee0b2 2112 }
16d20bd9 2113 if (!SvROK(sv)) {
d008e5eb 2114 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 2115 dTHR;
d008e5eb 2116 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2117 report_uninit();
c6ee37c5 2118 }
16d20bd9
AD		 2119 *lp = 0;
2120 return "";
2121 }
463ee0b2 2122 }
ed6116ce
LW		 2123 if (SvTHINKFIRST(sv)) {
2124 if (SvROK(sv)) {
a0d0e21e 2125 SV* tmpstr;
1554e226
DC		 2126 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2127 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 2128 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2129 sv = (SV*)SvRV(sv);
2130 if (!sv)
2131 s = "NULLREF";
2132 else {
f9277f47
IZ		 2133 MAGIC *mg;
2134
ed6116ce 2135 switch (SvTYPE(sv)) {
f9277f47
IZ		 2136 case SVt_PVMG:
2137 if ( ((SvFLAGS(sv) &
1c846c1f 2138 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2139 == (SVs_OBJECT|SVs_RMG))
57668c4d 2140 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2141 && (mg = mg_find(sv, 'r'))) {
5c0ca799 2142 dTHR;
2cd61cdb 2143 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2144
2cd61cdb 2145 if (!mg->mg_ptr) {
8782bef2
GB		 2146 char *fptr = "msix";
2147 char reflags[6];
2148 char ch;
2149 int left = 0;
2150 int right = 4;
2151 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2152
155aba94 2153 while((ch = *fptr++)) {
8782bef2
GB		 2154 if(reganch & 1) {
2155 reflags[left++] = ch;
2156 }
2157 else {
2158 reflags[right--] = ch;
2159 }
2160 reganch >>= 1;
2161 }
2162 if(left != 4) {
2163 reflags[left] = '-';
2164 left = 5;
2165 }
2166
2167 mg->mg_len = re->prelen + 4 + left;
2168 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2169 Copy("(?", mg->mg_ptr, 2, char);
2170 Copy(reflags, mg->mg_ptr+2, left, char);
2171 Copy(":", mg->mg_ptr+left+2, 1, char);
2172 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2173 mg->mg_ptr[mg->mg_len - 1] = ')';
2174 mg->mg_ptr[mg->mg_len] = 0;
2175 }
3280af22 2176 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2177 *lp = mg->mg_len;
2178 return mg->mg_ptr;
f9277f47
IZ		 2179 }
2180 /* Fall through */
ed6116ce
LW		 2181 case SVt_NULL:
2182 case SVt_IV:
2183 case SVt_NV:
2184 case SVt_RV:
2185 case SVt_PV:
2186 case SVt_PVIV:
2187 case SVt_PVNV:
81689caa
HS		 2188 case SVt_PVBM: if (SvROK(sv))
2189 s = "REF";
2190 else
2191 s = "SCALAR"; break;
ed6116ce
LW		 2192 case SVt_PVLV: s = "LVALUE"; break;
2193 case SVt_PVAV: s = "ARRAY"; break;
2194 case SVt_PVHV: s = "HASH"; break;
2195 case SVt_PVCV: s = "CODE"; break;
2196 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2197 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2198 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2199 default: s = "UNKNOWN"; break;
2200 }
46fc3d4c 2201 tsv = NEWSV(0,0);
ed6116ce 2202 if (SvOBJECT(sv))
cea2e8a9 2203 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2204 else
46fc3d4c 2205 sv_setpv(tsv, s);
57def98f 2206 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2207 goto tokensaveref;
463ee0b2 2208 }
ed6116ce
LW		 2209 *lp = strlen(s);
2210 return s;
79072805 2211 }
0336b60e
IZ		 2212 if (SvREADONLY(sv) && !SvOK(sv)) {
2213 dTHR;
2214 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2215 report_uninit();
ed6116ce
LW		 2216 *lp = 0;
2217 return "";
79072805 2218 }
79072805 2219 }
25da4f38
IZ		 2220 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2221 /* XXXX 64-bit? IV may have better precision... */
8aad8eb3 2222 /* I tried changing this to be 64-bit-aware and
34d861e4
JH		 2223 * the t/op/numconvert.t became very, very, angry.
2224 * --jhi Sep 1999 */
79072805
LW		 2225 if (SvTYPE(sv) < SVt_PVNV)
2226 sv_upgrade(sv, SVt_PVNV);
1c846c1f 2227 /* The +20 is pure guesswork. Configure test needed. --jhi */
59155cc0 2228 SvGROW(sv, NV_DIG + 20);
463ee0b2 2229 s = SvPVX(sv);
79072805 2230 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2231#ifdef apollo
463ee0b2 2232 if (SvNVX(sv) == 0.0)
79072805
LW		 2233 (void)strcpy(s,"0");
2234 else
2235#endif /*apollo*/
bbce6d69 2236 {
2d4389e4 2237 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2238 }
79072805 2239 errno = olderrno;
a0d0e21e
LW		 2240#ifdef FIXNEGATIVEZERO
2241 if (*s == '-' && s[1] == '0' && !s[2])
2242 strcpy(s,"0");
2243#endif
79072805
LW		 2244 while (*s) s++;
2245#ifdef hcx
2246 if (s[-1] == '.')
46fc3d4c 2247 *--s = '\0';
79072805
LW		 2248#endif
2249 }
748a9306 2250 else if (SvIOKp(sv)) {
25da4f38 2251 U32 isIOK = SvIOK(sv);
0336b60e 2252 U32 isUIOK = SvIsUV(sv);
25da4f38
IZ		 2253 char buf[TYPE_CHARS(UV)];
2254 char *ebuf, *ptr;
2255
79072805
LW		 2256 if (SvTYPE(sv) < SVt_PVIV)
2257 sv_upgrade(sv, SVt_PVIV);
0336b60e 2258 if (isUIOK)
25da4f38 2259 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
0336b60e 2260 else
25da4f38 2261 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
0336b60e
IZ		 2262 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2263 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2264 SvCUR_set(sv, ebuf - ptr);
46fc3d4c 2265 s = SvEND(sv);
0336b60e 2266 *s = '\0';
25da4f38 2267 if (isIOK)
64f14228
GA		 2268 SvIOK_on(sv);
2269 else
2270 SvIOKp_on(sv);
0336b60e
IZ		 2271 if (isUIOK)
2272 SvIsUV_on(sv);
2273 SvPOK_on(sv);
79072805
LW		 2274 }
2275 else {
11343788 2276 dTHR;
0336b60e
IZ		 2277 if (ckWARN(WARN_UNINITIALIZED)
2278 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2279 {
1d7c1841 2280 report_uninit();
0336b60e 2281 }
a0d0e21e 2282 *lp = 0;
25da4f38
IZ		 2283 if (SvTYPE(sv) < SVt_PV)
2284 /* Typically the caller expects that sv_any is not NULL now. */
2285 sv_upgrade(sv, SVt_PV);
a0d0e21e 2286 return "";
79072805 2287 }
463ee0b2
LW		 2288 *lp = s - SvPVX(sv);
2289 SvCUR_set(sv, *lp);
79072805 2290 SvPOK_on(sv);
1d7c1841
GS		 2291 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2292 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2293 return SvPVX(sv);
a0d0e21e
LW		 2294
2295 tokensave:
2296 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2297 /* Sneaky stuff here */
2298
2299 tokensaveref:
46fc3d4c 2300 if (!tsv)
96827780 2301 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2302 sv_2mortal(tsv);
2303 *lp = SvCUR(tsv);
2304 return SvPVX(tsv);
a0d0e21e
LW		 2305 }
2306 else {
2307 STRLEN len;
46fc3d4c 2308 char *t;
2309
2310 if (tsv) {
2311 sv_2mortal(tsv);
2312 t = SvPVX(tsv);
2313 len = SvCUR(tsv);
2314 }
2315 else {
96827780
MB		 2316 t = tmpbuf;
2317 len = strlen(tmpbuf);
46fc3d4c 2318 }
a0d0e21e 2319#ifdef FIXNEGATIVEZERO
46fc3d4c 2320 if (len == 2 && t[0] == '-' && t[1] == '0') {
2321 t = "0";
2322 len = 1;
2323 }
a0d0e21e
LW		 2324#endif
2325 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2326 *lp = len;
a0d0e21e
LW		 2327 s = SvGROW(sv, len + 1);
2328 SvCUR_set(sv, len);
46fc3d4c 2329 (void)strcpy(s, t);
6bf554b4 2330 SvPOKp_on(sv);
a0d0e21e
LW		 2331 return s;
2332 }
463ee0b2
LW		 2333}
2334
7340a771
GS		 2335char *
2336Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2337{
560a288e
GS		 2338 STRLEN n_a;
2339 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2340}
2341
2342char *
2343Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2344{
2345 return sv_2pv(sv,lp);
2346}
2347
2348char *
2349Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2350{
560a288e
GS		 2351 STRLEN n_a;
2352 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2353}
2354
2355char *
2356Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2357{
560a288e 2358 sv_utf8_upgrade(sv);
7340a771
GS		 2359 return sv_2pv(sv,lp);
2360}
1c846c1f 2361
463ee0b2
LW		 2362/* This function is only called on magical items */
2363bool
864dbfa3 2364Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2365{
8990e307 2366 if (SvGMAGICAL(sv))
463ee0b2
LW		 2367 mg_get(sv);
2368
a0d0e21e
LW		 2369 if (!SvOK(sv))
2370 return 0;
2371 if (SvROK(sv)) {
11343788 2372 dTHR;
a0d0e21e 2373 SV* tmpsv;
1554e226
DC		 2374 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2375 (SvRV(tmpsv) != SvRV(sv)))
9e7bc3e8 2376 return SvTRUE(tmpsv);
a0d0e21e
LW		 2377 return SvRV(sv) != 0;
2378 }
463ee0b2 2379 if (SvPOKp(sv)) {
11343788
MB		 2380 register XPV* Xpvtmp;
2381 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2382 (*Xpvtmp->xpv_pv > '0' ||
2383 Xpvtmp->xpv_cur > 1 ||
2384 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2385 return 1;
2386 else
2387 return 0;
2388 }
2389 else {
2390 if (SvIOKp(sv))
2391 return SvIVX(sv) != 0;
2392 else {
2393 if (SvNOKp(sv))
2394 return SvNVX(sv) != 0.0;
2395 else
2396 return FALSE;
2397 }
2398 }
79072805
LW		 2399}
2400
c461cf8f
JH		 2401/*
2402=for apidoc sv_utf8_upgrade
2403
2404Convert the PV of an SV to its UTF8-encoded form.
2405
2406=cut
2407*/
2408
560a288e
GS		 2409void
2410Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2411{
40826f67
JH		 2412 char *s, *t;
2413 bool hibit;
560a288e
GS		 2414
2415 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2416 return;
2417
40826f67
JH		 2418 /* This function could be much more efficient if we had a FLAG in SVs
2419 * to signal if there are any hibit chars in the PV.
560a288e 2420 */
40826f67
JH		 2421 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2422 if (*t & 0x80)
2423 hibit = TRUE;
560a288e 2424
40826f67 2425 if (hibit) {
67e989fb 2426 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
00df9076 2427 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
841d7a39
JH		 2428 SvCUR(sv) = len - 1;
2429 SvLEN(sv) = len; /* No longer know the real size. */
560a288e 2430 SvUTF8_on(sv);
d2f449dd 2431 Safefree(s); /* No longer using what was there before. */
560a288e
GS		 2432 }
2433}
2434
c461cf8f
JH		 2435/*
2436=for apidoc sv_utf8_downgrade
2437
2438Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2439This may not be possible if the PV contains non-byte encoding characters;
2440if this is the case, either returns false or, if C<fail_ok> is not
2441true, croaks.
2442
2443=cut
2444*/
2445
560a288e
GS		 2446bool
2447Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2448{
2449 if (SvPOK(sv) && SvUTF8(sv)) {
2450 char *c = SvPVX(sv);
9f9ab905 2451 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
00df9076 2452 if (!utf8_to_bytes((U8*)c, &len)) {
67e989fb
JH		 2453 if (fail_ok)
2454 return FALSE;
4b3603a4
JH		 2455 else {
2456 if (PL_op)
2457 Perl_croak(aTHX_ "Wide character in %s",
2458 PL_op_desc[PL_op->op_type]);
2459 else
2460 Perl_croak(aTHX_ "Wide character");
2461 }
67e989fb
JH		 2462 }
2463 SvCUR(sv) = len - 1;
9f9ab905 2464 SvUTF8_off(sv);
560a288e
GS		 2465 }
2466 return TRUE;
2467}
2468
c461cf8f
JH		 2469/*
2470=for apidoc sv_utf8_encode
2471
2472Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
1c846c1f 2473flag so that it looks like bytes again. Nothing calls this.
c461cf8f
JH		 2474
2475=cut
2476*/
2477
560a288e
GS		 2478void
2479Perl_sv_utf8_encode(pTHX_ register SV *sv)
2480{
2481 sv_utf8_upgrade(sv);
2482 SvUTF8_off(sv);
2483}
2484
2485bool
2486Perl_sv_utf8_decode(pTHX_ register SV *sv)
2487{
2488 if (SvPOK(sv)) {
2489 char *c;
2490 bool has_utf = FALSE;
2491 if (!sv_utf8_downgrade(sv, TRUE))
2492 return FALSE;
2493
2494 /* it is actually just a matter of turning the utf8 flag on, but
2495 * we want to make sure everything inside is valid utf8 first.
2496 */
2497 c = SvPVX(sv);
00df9076 2498 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
67e989fb
JH		 2499 return FALSE;
2500
560a288e 2501 while (c < SvEND(sv)) {
67e989fb
JH		 2502 if (*c++ & 0x80) {
2503 SvUTF8_on(sv);
2504 break;
2505 }
560a288e 2506 }
560a288e
GS		 2507 }
2508 return TRUE;
2509}
2510
2511
79072805 2512/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 2513 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 2514 * as temporary.
2515 */
2516
954c1994
GS		 2517/*
2518=for apidoc sv_setsv
2519
2520Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2521The source SV may be destroyed if it is mortal. Does not handle 'set'
2522magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2523C<sv_setsv_mg>.
2524
2525=cut
2526*/
2527
79072805 2528void
864dbfa3 2529Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 2530{
11343788 2531 dTHR;
8990e307
LW		 2532 register U32 sflags;
2533 register int dtype;
2534 register int stype;
463ee0b2 2535
79072805
LW		 2536 if (sstr == dstr)
2537 return;
2213622d 2538 SV_CHECK_THINKFIRST(dstr);
79072805 2539 if (!sstr)
3280af22 2540 sstr = &PL_sv_undef;
8990e307
LW		 2541 stype = SvTYPE(sstr);
2542 dtype = SvTYPE(dstr);
79072805 2543
a0d0e21e 2544 SvAMAGIC_off(dstr);
9e7bc3e8 2545
463ee0b2 2546 /* There's a lot of redundancy below but we're going for speed here */
79072805 2547
8990e307 2548 switch (stype) {
79072805 2549 case SVt_NULL:
aece5585 2550 undef_sstr:
20408e3c
GS		 2551 if (dtype != SVt_PVGV) {
2552 (void)SvOK_off(dstr);
2553 return;
2554 }
2555 break;
463ee0b2 2556 case SVt_IV:
aece5585
GA		 2557 if (SvIOK(sstr)) {
2558 switch (dtype) {
2559 case SVt_NULL:
8990e307 2560 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 2561 break;
2562 case SVt_NV:
8990e307 2563 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2564 break;
2565 case SVt_RV:
2566 case SVt_PV:
a0d0e21e 2567 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 2568 break;
2569 }
2570 (void)SvIOK_only(dstr);
2571 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 2572 if (SvIsUV(sstr))
2573 SvIsUV_on(dstr);
27c9684d
AP		 2574 if (SvTAINTED(sstr))
2575 SvTAINT(dstr);
aece5585 2576 return;
8990e307 2577 }
aece5585
GA		 2578 goto undef_sstr;
2579
463ee0b2 2580 case SVt_NV:
aece5585
GA		 2581 if (SvNOK(sstr)) {
2582 switch (dtype) {
2583 case SVt_NULL:
2584 case SVt_IV:
8990e307 2585 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 2586 break;
2587 case SVt_RV:
2588 case SVt_PV:
2589 case SVt_PVIV:
a0d0e21e 2590 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2591 break;
2592 }
2593 SvNVX(dstr) = SvNVX(sstr);
2594 (void)SvNOK_only(dstr);
27c9684d
AP		 2595 if (SvTAINTED(sstr))
2596 SvTAINT(dstr);
aece5585 2597 return;
8990e307 2598 }
aece5585
GA		 2599 goto undef_sstr;
2600
ed6116ce 2601 case SVt_RV:
8990e307 2602 if (dtype < SVt_RV)
ed6116ce 2603 sv_upgrade(dstr, SVt_RV);
c07a80fd 2604 else if (dtype == SVt_PVGV &&
2605 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2606 sstr = SvRV(sstr);
a5f75d66 2607 if (sstr == dstr) {
1d7c1841
GS		 2608 if (GvIMPORTED(dstr) != GVf_IMPORTED
2609 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2610 {
a5f75d66 2611 GvIMPORTED_on(dstr);
1d7c1841 2612 }
a5f75d66
AD		 2613 GvMULTI_on(dstr);
2614 return;
2615 }
c07a80fd 2616 goto glob_assign;
2617 }
ed6116ce 2618 break;
463ee0b2 2619 case SVt_PV:
fc36a67e 2620 case SVt_PVFM:
8990e307 2621 if (dtype < SVt_PV)
463ee0b2 2622 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 2623 break;
2624 case SVt_PVIV:
8990e307 2625 if (dtype < SVt_PVIV)
463ee0b2 2626 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 2627 break;
2628 case SVt_PVNV:
8990e307 2629 if (dtype < SVt_PVNV)
463ee0b2 2630 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 2631 break;
4633a7c4
LW		 2632 case SVt_PVAV:
2633 case SVt_PVHV:
2634 case SVt_PVCV:
4633a7c4 2635 case SVt_PVIO:
533c011a 2636 if (PL_op)
cea2e8a9 2637 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 2638 PL_op_name[PL_op->op_type]);
4633a7c4 2639 else
cea2e8a9 2640 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 2641 break;
2642
79072805 2643 case SVt_PVGV:
8990e307 2644 if (dtype <= SVt_PVGV) {
c07a80fd 2645 glob_assign:
a5f75d66 2646 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 2647 char *name = GvNAME(sstr);
2648 STRLEN len = GvNAMELEN(sstr);
463ee0b2 2649 sv_upgrade(dstr, SVt_PVGV);
6662521e 2650 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 2651 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 2652 GvNAME(dstr) = savepvn(name, len);
2653 GvNAMELEN(dstr) = len;
2654 SvFAKE_on(dstr); /* can coerce to non-glob */
2655 }
7bac28a0 2656 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 2657 else if (PL_curstackinfo->si_type == PERLSI_SORT
2658 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 2659 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 2660 GvNAME(dstr));
a0d0e21e 2661 (void)SvOK_off(dstr);
a5f75d66 2662 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 2663 gp_free((GV*)dstr);
79072805 2664 GvGP(dstr) = gp_ref(GvGP(sstr));
27c9684d
AP		 2665 if (SvTAINTED(sstr))
2666 SvTAINT(dstr);
1d7c1841
GS		 2667 if (GvIMPORTED(dstr) != GVf_IMPORTED
2668 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2669 {
a5f75d66 2670 GvIMPORTED_on(dstr);
1d7c1841 2671 }
a5f75d66 2672 GvMULTI_on(dstr);
79072805
LW		 2673 return;
2674 }
2675 /* FALL THROUGH */
2676
2677 default:
973f89ab
CS		 2678 if (SvGMAGICAL(sstr)) {
2679 mg_get(sstr);
2680 if (SvTYPE(sstr) != stype) {
2681 stype = SvTYPE(sstr);
2682 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2683 goto glob_assign;
2684 }
2685 }
ded42b9f 2686 if (stype == SVt_PVLV)
6fc92669 2687 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 2688 else
6fc92669 2689 (void)SvUPGRADE(dstr, stype);
79072805
LW		 2690 }
2691
8990e307
LW		 2692 sflags = SvFLAGS(sstr);
2693
2694 if (sflags & SVf_ROK) {
2695 if (dtype >= SVt_PV) {
2696 if (dtype == SVt_PVGV) {
2697 SV *sref = SvREFCNT_inc(SvRV(sstr));
2698 SV *dref = 0;
a5f75d66 2699 int intro = GvINTRO(dstr);
a0d0e21e
LW		 2700
2701 if (intro) {
2702 GP *gp;
1d7c1841 2703 gp_free((GV*)dstr);
a5f75d66 2704 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 2705 Newz(602,gp, 1, GP);
44a8e56a 2706 GvGP(dstr) = gp_ref(gp);
a0d0e21e 2707 GvSV(dstr) = NEWSV(72,0);
1d7c1841 2708 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 2709 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 2710 }
a5f75d66 2711 GvMULTI_on(dstr);
8990e307
LW		 2712 switch (SvTYPE(sref)) {
2713 case SVt_PVAV:
a0d0e21e
LW		 2714 if (intro)
2715 SAVESPTR(GvAV(dstr));
2716 else
2717 dref = (SV*)GvAV(dstr);
8990e307 2718 GvAV(dstr) = (AV*)sref;
39bac7f7 2719 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 2720 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2721 {
a5f75d66 2722 GvIMPORTED_AV_on(dstr);
1d7c1841 2723 }
8990e307
LW		 2724 break;
2725 case SVt_PVHV:
a0d0e21e
LW		 2726 if (intro)
2727 SAVESPTR(GvHV(dstr));
2728 else
2729 dref = (SV*)GvHV(dstr);
8990e307 2730 GvHV(dstr) = (HV*)sref;
39bac7f7 2731 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 2732 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2733 {
a5f75d66 2734 GvIMPORTED_HV_on(dstr);
1d7c1841 2735 }
8990e307
LW		 2736 break;
2737 case SVt_PVCV:
8ebc5c01 2738 if (intro) {
2739 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2740 SvREFCNT_dec(GvCV(dstr));
2741 GvCV(dstr) = Nullcv;
68dc0745 2742 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 2743 PL_sub_generation++;
8ebc5c01 2744 }
a0d0e21e 2745 SAVESPTR(GvCV(dstr));
8ebc5c01 2746 }
68dc0745 2747 else
2748 dref = (SV*)GvCV(dstr);
2749 if (GvCV(dstr) != (CV*)sref) {
748a9306 2750 CV* cv = GvCV(dstr);
4633a7c4 2751 if (cv) {
68dc0745 2752 if (!GvCVGEN((GV*)dstr) &&
2753 (CvROOT(cv) || CvXSUB(cv)))
2754 {
beab0874 2755 SV *const_sv;
7bac28a0 2756 /* ahem, death to those who redefine
2757 * active sort subs */
3280af22
NIS		 2758 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2759 PL_sortcop == CvSTART(cv))
1c846c1f 2760 Perl_croak(aTHX_
7bac28a0 2761 "Can't redefine active sort subroutine %s",
2762 GvENAME((GV*)dstr));
beab0874
JT		 2763 /* Redefining a sub - warning is mandatory if
2764 it was a const and its value changed. */
2765 if (ckWARN(WARN_REDEFINE)
2766 || (CvCONST(cv)
2767 && (!CvCONST((CV*)sref)
2768 || sv_cmp(cv_const_sv(cv),
2769 cv_const_sv((CV*)sref)))))
2770 {
2771 Perl_warner(aTHX_ WARN_REDEFINE,
2772 CvCONST(cv)
2773 ? "Constant subroutine %s redefined"
47deb5e7 2774 : "Subroutine %s redefined",
beab0874
JT		 2775 GvENAME((GV*)dstr));
2776 }
9607fc9c 2777 }
3fe9a6f1 2778 cv_ckproto(cv, (GV*)dstr,
2779 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 2780 }
a5f75d66 2781 GvCV(dstr) = (CV*)sref;
7a4c00b4 2782 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 2783 GvASSUMECV_on(dstr);
3280af22 2784 PL_sub_generation++;
a5f75d66 2785 }
39bac7f7 2786 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 2787 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2788 {
a5f75d66 2789 GvIMPORTED_CV_on(dstr);
1d7c1841 2790 }
8990e307 2791 break;
91bba347
LW		 2792 case SVt_PVIO:
2793 if (intro)
2794 SAVESPTR(GvIOp(dstr));
2795 else
2796 dref = (SV*)GvIOp(dstr);
2797 GvIOp(dstr) = (IO*)sref;
2798 break;
f4d13ee9
JH		 2799 case SVt_PVFM:
2800 if (intro)
2801 SAVESPTR(GvFORM(dstr));
2802 else
2803 dref = (SV*)GvFORM(dstr);
2804 GvFORM(dstr) = (CV*)sref;
2805 break;
8990e307 2806 default:
a0d0e21e
LW		 2807 if (intro)
2808 SAVESPTR(GvSV(dstr));
2809 else
2810 dref = (SV*)GvSV(dstr);
8990e307 2811 GvSV(dstr) = sref;
39bac7f7 2812 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 2813 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2814 {
a5f75d66 2815 GvIMPORTED_SV_on(dstr);
1d7c1841 2816 }
8990e307
LW		 2817 break;
2818 }
2819 if (dref)
2820 SvREFCNT_dec(dref);
a0d0e21e
LW		 2821 if (intro)
2822 SAVEFREESV(sref);
27c9684d
AP		 2823 if (SvTAINTED(sstr))
2824 SvTAINT(dstr);
8990e307
LW		 2825 return;
2826 }
a0d0e21e 2827 if (SvPVX(dstr)) {
760ac839 2828 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 2829 if (SvLEN(dstr))
2830 Safefree(SvPVX(dstr));
a0d0e21e
LW		 2831 SvLEN(dstr)=SvCUR(dstr)=0;
2832 }
8990e307 2833 }
a0d0e21e 2834 (void)SvOK_off(dstr);
8990e307 2835 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 2836 SvROK_on(dstr);
8990e307 2837 if (sflags & SVp_NOK) {
ed6116ce
LW		 2838 SvNOK_on(dstr);
2839 SvNVX(dstr) = SvNVX(sstr);
2840 }
8990e307 2841 if (sflags & SVp_IOK) {
a0d0e21e 2842 (void)SvIOK_on(dstr);
ed6116ce 2843 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2844 if (sflags & SVf_IVisUV)
25da4f38 2845 SvIsUV_on(dstr);
ed6116ce 2846 }
a0d0e21e
LW		 2847 if (SvAMAGIC(sstr)) {
2848 SvAMAGIC_on(dstr);
2849 }
ed6116ce 2850 }
8990e307 2851 else if (sflags & SVp_POK) {
79072805
LW		 2852
2853 /*
2854 * Check to see if we can just swipe the string. If so, it's a
2855 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 2856 * It might even be a win on short strings if SvPVX(dstr)
2857 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 2858 */
2859
ff68c719 2860 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 2861 SvREFCNT(sstr) == 1 && /* and no other references to it? */
1c846c1f 2862 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
4c8f17b9
BH		 2863 SvLEN(sstr) && /* and really is a string */
2864 !(PL_op && PL_op->op_type == OP_AASSIGN)) /* and won't be needed again, potentially */
a5f75d66 2865 {
adbc6bb1 2866 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 2867 if (SvOOK(dstr)) {
2868 SvFLAGS(dstr) &= ~SVf_OOK;
2869 Safefree(SvPVX(dstr) - SvIVX(dstr));
2870 }
50483b2c 2871 else if (SvLEN(dstr))
a5f75d66 2872 Safefree(SvPVX(dstr));
79072805 2873 }
a5f75d66 2874 (void)SvPOK_only(dstr);
463ee0b2 2875 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 2876 SvLEN_set(dstr, SvLEN(sstr));
2877 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 2878
79072805 2879 SvTEMP_off(dstr);
2b1c7e3e 2880 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 2881 SvPV_set(sstr, Nullch);
2882 SvLEN_set(sstr, 0);
a5f75d66
AD		 2883 SvCUR_set(sstr, 0);
2884 SvTEMP_off(sstr);
79072805
LW		 2885 }
2886 else { /* have to copy actual string */
8990e307
LW		 2887 STRLEN len = SvCUR(sstr);
2888
2889 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2890 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2891 SvCUR_set(dstr, len);
2892 *SvEND(dstr) = '\0';
a0d0e21e 2893 (void)SvPOK_only(dstr);
79072805 2894 }
3aa33fe5 2895 if ((sflags & SVf_UTF8) && !IN_BYTE)
a7cb1f99 2896 SvUTF8_on(dstr);
79072805 2897 /*SUPPRESS 560*/
8990e307 2898 if (sflags & SVp_NOK) {
79072805 2899 SvNOK_on(dstr);
463ee0b2 2900 SvNVX(dstr) = SvNVX(sstr);
79072805 2901 }
8990e307 2902 if (sflags & SVp_IOK) {
a0d0e21e 2903 (void)SvIOK_on(dstr);
463ee0b2 2904 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2905 if (sflags & SVf_IVisUV)
25da4f38 2906 SvIsUV_on(dstr);
79072805
LW		 2907 }
2908 }
8990e307 2909 else if (sflags & SVp_NOK) {
463ee0b2 2910 SvNVX(dstr) = SvNVX(sstr);
a0d0e21e 2911 (void)SvNOK_only(dstr);
2b1c7e3e 2912 if (sflags & SVf_IOK) {
a0d0e21e 2913 (void)SvIOK_on(dstr);
463ee0b2 2914 SvIVX(dstr) = SvIVX(sstr);
25da4f38 2915 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 2916 if (sflags & SVf_IVisUV)
25da4f38 2917 SvIsUV_on(dstr);
79072805
LW		 2918 }
2919 }
8990e307 2920 else if (sflags & SVp_IOK) {
a0d0e21e 2921 (void)SvIOK_only(dstr);
463ee0b2 2922 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2923 if (sflags & SVf_IVisUV)
25da4f38 2924 SvIsUV_on(dstr);
79072805
LW		 2925 }
2926 else {
20408e3c 2927 if (dtype == SVt_PVGV) {
e476b1b5
GS		 2928 if (ckWARN(WARN_MISC))
2929 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 2930 }
2931 else
2932 (void)SvOK_off(dstr);
a0d0e21e 2933 }
27c9684d
AP		 2934 if (SvTAINTED(sstr))
2935 SvTAINT(dstr);
79072805
LW		 2936}
2937
954c1994
GS		 2938/*
2939=for apidoc sv_setsv_mg
2940
2941Like C<sv_setsv>, but also handles 'set' magic.
2942
2943=cut
2944*/
2945
79072805 2946void
864dbfa3 2947Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 2948{
2949 sv_setsv(dstr,sstr);
2950 SvSETMAGIC(dstr);
2951}
2952
954c1994
GS		 2953/*
2954=for apidoc sv_setpvn
2955
2956Copies a string into an SV. The C<len> parameter indicates the number of
2957bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2958
2959=cut
2960*/
2961
ef50df4b 2962void
864dbfa3 2963Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 2964{
c6f8c383 2965 register char *dptr;
793db0cb
JH		 2966 {
2967 /* len is STRLEN which is unsigned, need to copy to signed */
2968 IV iv = len;
2969 assert(iv >= 0);
2970 }
2213622d 2971 SV_CHECK_THINKFIRST(sv);
463ee0b2 2972 if (!ptr) {
a0d0e21e 2973 (void)SvOK_off(sv);
463ee0b2
LW		 2974 return;
2975 }
6fc92669 2976 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 2977
79072805 2978 SvGROW(sv, len + 1);
c6f8c383
GA		 2979 dptr = SvPVX(sv);
2980 Move(ptr,dptr,len,char);
2981 dptr[len] = '\0';
79072805 2982 SvCUR_set(sv, len);
a0d0e21e 2983 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 2984 SvTAINT(sv);
79072805
LW		 2985}
2986
954c1994
GS		 2987/*
2988=for apidoc sv_setpvn_mg
2989
2990Like C<sv_setpvn>, but also handles 'set' magic.
2991
2992=cut
2993*/
2994
79072805 2995void
864dbfa3 2996Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 2997{
2998 sv_setpvn(sv,ptr,len);
2999 SvSETMAGIC(sv);
3000}
3001
954c1994
GS		 3002/*
3003=for apidoc sv_setpv
3004
3005Copies a string into an SV. The string must be null-terminated. Does not
3006handle 'set' magic. See C<sv_setpv_mg>.
3007
3008=cut
3009*/
3010
ef50df4b 3011void
864dbfa3 3012Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3013{
3014 register STRLEN len;
3015
2213622d 3016 SV_CHECK_THINKFIRST(sv);
463ee0b2 3017 if (!ptr) {
a0d0e21e 3018 (void)SvOK_off(sv);
463ee0b2
LW		 3019 return;
3020 }
79072805 3021 len = strlen(ptr);
6fc92669 3022 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3023
79072805 3024 SvGROW(sv, len + 1);
463ee0b2 3025 Move(ptr,SvPVX(sv),len+1,char);
79072805 3026 SvCUR_set(sv, len);
a0d0e21e 3027 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2
LW		 3028 SvTAINT(sv);
3029}
3030
954c1994
GS		 3031/*
3032=for apidoc sv_setpv_mg
3033
3034Like C<sv_setpv>, but also handles 'set' magic.
3035
3036=cut
3037*/
3038
463ee0b2 3039void
864dbfa3 3040Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3041{
3042 sv_setpv(sv,ptr);
3043 SvSETMAGIC(sv);
3044}
3045
954c1994
GS		 3046/*
3047=for apidoc sv_usepvn
3048
3049Tells an SV to use C<ptr> to find its string value. Normally the string is
1c846c1f 3050stored inside the SV but sv_usepvn allows the SV to use an outside string.
954c1994
GS		 3051The C<ptr> should point to memory that was allocated by C<malloc>. The
3052string length, C<len>, must be supplied. This function will realloc the
3053memory pointed to by C<ptr>, so that pointer should not be freed or used by
3054the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3055See C<sv_usepvn_mg>.
3056
3057=cut
3058*/
3059
ef50df4b 3060void
864dbfa3 3061Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3062{
2213622d 3063 SV_CHECK_THINKFIRST(sv);
c6f8c383 3064 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3065 if (!ptr) {
a0d0e21e 3066 (void)SvOK_off(sv);
463ee0b2
LW		 3067 return;
3068 }
a0ed51b3 3069 (void)SvOOK_off(sv);
50483b2c 3070 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3071 Safefree(SvPVX(sv));
3072 Renew(ptr, len+1, char);
3073 SvPVX(sv) = ptr;
3074 SvCUR_set(sv, len);
3075 SvLEN_set(sv, len+1);
3076 *SvEND(sv) = '\0';
a0d0e21e 3077 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3078 SvTAINT(sv);
79072805
LW		 3079}
3080
954c1994
GS		 3081/*
3082=for apidoc sv_usepvn_mg
3083
3084Like C<sv_usepvn>, but also handles 'set' magic.
3085
3086=cut
3087*/
3088
ef50df4b 3089void
864dbfa3 3090Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3091{
51c1089b 3092 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3093 SvSETMAGIC(sv);
3094}
3095
6fc92669 3096void
864dbfa3 3097Perl_sv_force_normal(pTHX_ register SV *sv)
0f15f207 3098{
2213622d
GA		 3099 if (SvREADONLY(sv)) {
3100 dTHR;
1c846c1f
NIS		 3101 if (SvFAKE(sv)) {
3102 char *pvx = SvPVX(sv);
3103 STRLEN len = SvCUR(sv);
3104 U32 hash = SvUVX(sv);
3105 SvGROW(sv, len + 1);
3106 Move(pvx,SvPVX(sv),len,char);
3107 *SvEND(sv) = '\0';
3108 SvFAKE_off(sv);
3109 SvREADONLY_off(sv);
3110 unsharepvn(pvx,len,hash);
3111 }
3112 else if (PL_curcop != &PL_compiling)
cea2e8a9 3113 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3114 }
2213622d
GA		 3115 if (SvROK(sv))
3116 sv_unref(sv);
6fc92669
GS		 3117 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3118 sv_unglob(sv);
0f15f207 3119}
1c846c1f 3120
954c1994
GS		 3121/*
3122=for apidoc sv_chop
3123
1c846c1f 3124Efficient removal of characters from the beginning of the string buffer.
954c1994
GS		 3125SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3126the string buffer. The C<ptr> becomes the first character of the adjusted
3127string.
3128
3129=cut
3130*/
3131
79072805 3132void
864dbfa3 3133Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
1c846c1f
NIS		 3134
3135
79072805
LW		 3136{
3137 register STRLEN delta;
3138
a0d0e21e 3139 if (!ptr || !SvPOKp(sv))
79072805 3140 return;
2213622d 3141 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3142 if (SvTYPE(sv) < SVt_PVIV)
3143 sv_upgrade(sv,SVt_PVIV);
3144
3145 if (!SvOOK(sv)) {
50483b2c
JD		 3146 if (!SvLEN(sv)) { /* make copy of shared string */
3147 char *pvx = SvPVX(sv);
3148 STRLEN len = SvCUR(sv);
3149 SvGROW(sv, len + 1);
3150 Move(pvx,SvPVX(sv),len,char);
3151 *SvEND(sv) = '\0';
3152 }
463ee0b2 3153 SvIVX(sv) = 0;
79072805
LW		 3154 SvFLAGS(sv) |= SVf_OOK;
3155 }
25da4f38 3156 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3157 delta = ptr - SvPVX(sv);
79072805
LW		 3158 SvLEN(sv) -= delta;
3159 SvCUR(sv) -= delta;
463ee0b2
LW		 3160 SvPVX(sv) += delta;
3161 SvIVX(sv) += delta;
79072805
LW		 3162}
3163
954c1994
GS		 3164/*
3165=for apidoc sv_catpvn
3166
3167Concatenates the string onto the end of the string which is in the SV. The
3168C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3169'set' magic. See C<sv_catpvn_mg>.
3170
3171=cut
3172*/
3173
79072805 3174void
864dbfa3 3175Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3176{
463ee0b2 3177 STRLEN tlen;
748a9306 3178 char *junk;
a0d0e21e 3179
748a9306 3180 junk = SvPV_force(sv, tlen);
463ee0b2 3181 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3182 if (ptr == junk)
3183 ptr = SvPVX(sv);
463ee0b2 3184 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3185 SvCUR(sv) += len;
3186 *SvEND(sv) = '\0';
d41ff1b8 3187 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3188 SvTAINT(sv);
79072805
LW		 3189}
3190
954c1994
GS		 3191/*
3192=for apidoc sv_catpvn_mg
3193
3194Like C<sv_catpvn>, but also handles 'set' magic.
3195
3196=cut
3197*/
3198
79072805 3199void
864dbfa3 3200Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3201{
3202 sv_catpvn(sv,ptr,len);
3203 SvSETMAGIC(sv);
3204}
3205
954c1994
GS		 3206/*
3207=for apidoc sv_catsv
3208
3209Concatenates the string from SV C<ssv> onto the end of the string in SV
3210C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3211
3212=cut
3213*/
3214
ef50df4b 3215void
864dbfa3 3216Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
79072805
LW		 3217{
3218 char *s;
463ee0b2 3219 STRLEN len;
79072805
LW		 3220 if (!sstr)
3221 return;
155aba94 3222 if ((s = SvPV(sstr, len))) {
e84ff256 3223 if (DO_UTF8(sstr)) {
560a288e 3224 sv_utf8_upgrade(dstr);
e84ff256 3225 sv_catpvn(dstr,s,len);
560a288e 3226 SvUTF8_on(dstr);
e84ff256
GS		 3227 }
3228 else
3229 sv_catpvn(dstr,s,len);
560a288e 3230 }
79072805
LW		 3231}
3232
954c1994
GS		 3233/*
3234=for apidoc sv_catsv_mg
3235
3236Like C<sv_catsv>, but also handles 'set' magic.
3237
3238=cut
3239*/
3240
79072805 3241void
864dbfa3 3242Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3243{
3244 sv_catsv(dstr,sstr);
3245 SvSETMAGIC(dstr);
3246}
3247
954c1994
GS		 3248/*
3249=for apidoc sv_catpv
3250
3251Concatenates the string onto the end of the string which is in the SV.
3252Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3253
3254=cut
3255*/
3256
ef50df4b 3257void
864dbfa3 3258Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3259{
3260 register STRLEN len;
463ee0b2 3261 STRLEN tlen;
748a9306 3262 char *junk;
79072805 3263
79072805
LW		 3264 if (!ptr)
3265 return;
748a9306 3266 junk = SvPV_force(sv, tlen);
79072805 3267 len = strlen(ptr);
463ee0b2 3268 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3269 if (ptr == junk)
3270 ptr = SvPVX(sv);
463ee0b2 3271 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3272 SvCUR(sv) += len;
d41ff1b8 3273 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3274 SvTAINT(sv);
79072805
LW		 3275}
3276
954c1994
GS		 3277/*
3278=for apidoc sv_catpv_mg
3279
3280Like C<sv_catpv>, but also handles 'set' magic.
3281
3282=cut
3283*/
3284
ef50df4b 3285void
864dbfa3 3286Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3287{
51c1089b 3288 sv_catpv(sv,ptr);
ef50df4b
GS		 3289 SvSETMAGIC(sv);
3290}
3291
79072805 3292SV *
864dbfa3 3293Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3294{
3295 register SV *sv;
1c846c1f 3296
4561caa4 3297 new_SV(sv);
79072805
LW		 3298 if (len) {
3299 sv_upgrade(sv, SVt_PV);
3300 SvGROW(sv, len + 1);
3301 }
3302 return sv;
3303}
3304
1edc1566 3305/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3306
954c1994
GS		 3307/*
3308=for apidoc sv_magic
3309
3310Adds magic to an SV.
3311
3312=cut
3313*/
3314
79072805 3315void
864dbfa3 3316Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3317{
3318 MAGIC* mg;
1c846c1f 3319
0f15f207
MB		 3320 if (SvREADONLY(sv)) {
3321 dTHR;
3280af22 3322 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3323 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3324 }
4633a7c4 3325 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3326 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3327 if (how == 't')
565764a8 3328 mg->mg_len |= 1;
463ee0b2 3329 return;
748a9306 3330 }
463ee0b2
LW		 3331 }
3332 else {
c6f8c383 3333 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3334 }
79072805
LW		 3335 Newz(702,mg, 1, MAGIC);
3336 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3337
79072805 3338 SvMAGIC(sv) = mg;
c277df42 3339 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3340 mg->mg_obj = obj;
85e6fe83 3341 else {
11343788 3342 dTHR;
8990e307 3343 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3344 mg->mg_flags |= MGf_REFCOUNTED;
3345 }
79072805 3346 mg->mg_type = how;
565764a8 3347 mg->mg_len = namlen;
1edc1566 3348 if (name)
3349 if (namlen >= 0)
3350 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3351 else if (namlen == HEf_SVKEY)
1edc1566 3352 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
1c846c1f 3353
79072805
LW		 3354 switch (how) {
3355 case 0:
22c35a8c 3356 mg->mg_virtual = &PL_vtbl_sv;
79072805 3357 break;
a0d0e21e 3358 case 'A':
22c35a8c 3359 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3360 break;
3361 case 'a':
22c35a8c 3362 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3363 break;
3364 case 'c':
3365 mg->mg_virtual = 0;
3366 break;
79072805 3367 case 'B':
22c35a8c 3368 mg->mg_virtual = &PL_vtbl_bm;
79072805 3369 break;
6cef1e77 3370 case 'D':
22c35a8c 3371 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3372 break;
3373 case 'd':
22c35a8c 3374 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3375 break;
79072805 3376 case 'E':
22c35a8c 3377 mg->mg_virtual = &PL_vtbl_env;
79072805 3378 break;
55497cff 3379 case 'f':
22c35a8c 3380 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3381 break;
79072805 3382 case 'e':
22c35a8c 3383 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3384 break;
93a17b20 3385 case 'g':
22c35a8c 3386 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3387 break;
463ee0b2 3388 case 'I':
22c35a8c 3389 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3390 break;
3391 case 'i':
22c35a8c 3392 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3393 break;
16660edb 3394 case 'k':
22c35a8c 3395 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3396 break;
79072805 3397 case 'L':
a0d0e21e 3398 SvRMAGICAL_on(sv);
93a17b20
LW		 3399 mg->mg_virtual = 0;
3400 break;
3401 case 'l':
22c35a8c 3402 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3403 break;
f93b4edd
MB		 3404#ifdef USE_THREADS
3405 case 'm':
22c35a8c 3406 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3407 break;
3408#endif /* USE_THREADS */
36477c24 3409#ifdef USE_LOCALE_COLLATE
bbce6d69 3410 case 'o':
22c35a8c 3411 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3412 break;
36477c24 3413#endif /* USE_LOCALE_COLLATE */
463ee0b2 3414 case 'P':
22c35a8c 3415 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 3416 break;
3417 case 'p':
a0d0e21e 3418 case 'q':
22c35a8c 3419 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 3420 break;
c277df42 3421 case 'r':
22c35a8c 3422 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 3423 break;
79072805 3424 case 'S':
22c35a8c 3425 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 3426 break;
3427 case 's':
22c35a8c 3428 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 3429 break;
463ee0b2 3430 case 't':
22c35a8c 3431 mg->mg_virtual = &PL_vtbl_taint;
565764a8 3432 mg->mg_len = 1;
463ee0b2 3433 break;
79072805 3434 case 'U':
22c35a8c 3435 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 3436 break;
3437 case 'v':
22c35a8c 3438 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 3439 break;
3440 case 'x':
22c35a8c 3441 mg->mg_virtual = &PL_vtbl_substr;
79072805 3442 break;
5f05dabc 3443 case 'y':
22c35a8c 3444 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 3445 break;
79072805 3446 case '*':
22c35a8c 3447 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 3448 break;
3449 case '#':
22c35a8c 3450 mg->mg_virtual = &PL_vtbl_arylen;
79072805 3451 break;
a0d0e21e 3452 case '.':
22c35a8c 3453 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 3454 break;
810b8aa5
GS		 3455 case '<':
3456 mg->mg_virtual = &PL_vtbl_backref;
3457 break;
4633a7c4
LW		 3458 case '~': /* Reserved for use by extensions not perl internals. */
3459 /* Useful for attaching extension internal data to perl vars. */
3460 /* Note that multiple extensions may clash if magical scalars */
3461 /* etc holding private data from one are passed to another. */
3462 SvRMAGICAL_on(sv);
a0d0e21e 3463 break;
79072805 3464 default:
cea2e8a9 3465 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 3466 }
8990e307
LW		 3467 mg_magical(sv);
3468 if (SvGMAGICAL(sv))
3469 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 3470}
3471
c461cf8f
JH		 3472/*
3473=for apidoc sv_unmagic
3474
3475Removes magic from an SV.
3476
3477=cut
3478*/
3479
463ee0b2 3480int
864dbfa3 3481Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 3482{
3483 MAGIC* mg;
3484 MAGIC** mgp;
91bba347 3485 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 3486 return 0;
3487 mgp = &SvMAGIC(sv);
3488 for (mg = *mgp; mg; mg = *mgp) {
3489 if (mg->mg_type == type) {
3490 MGVTBL* vtbl = mg->mg_virtual;
3491 *mgp = mg->mg_moremagic;
1d7c1841 3492 if (vtbl && vtbl->svt_free)
fc0dc3b3 3493 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 3494 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 3495 if (mg->mg_len >= 0)
1edc1566 3496 Safefree(mg->mg_ptr);
565764a8 3497 else if (mg->mg_len == HEf_SVKEY)
1edc1566 3498 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 3499 if (mg->mg_flags & MGf_REFCOUNTED)
3500 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 3501 Safefree(mg);
3502 }
3503 else
3504 mgp = &mg->mg_moremagic;
79072805 3505 }
91bba347 3506 if (!SvMAGIC(sv)) {
463ee0b2 3507 SvMAGICAL_off(sv);
8990e307 3508 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 3509 }
3510
3511 return 0;
79072805
LW		 3512}
3513
c461cf8f
JH		 3514/*
3515=for apidoc sv_rvweaken
3516
3517Weaken a reference.
3518
3519=cut
3520*/
3521
810b8aa5 3522SV *
864dbfa3 3523Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 3524{
3525 SV *tsv;
3526 if (!SvOK(sv)) /* let undefs pass */
3527 return sv;
3528 if (!SvROK(sv))
cea2e8a9 3529 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5
GS		 3530 else if (SvWEAKREF(sv)) {
3531 dTHR;
3532 if (ckWARN(WARN_MISC))
cea2e8a9 3533 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 3534 return sv;
3535 }
3536 tsv = SvRV(sv);
3537 sv_add_backref(tsv, sv);
3538 SvWEAKREF_on(sv);
1c846c1f 3539 SvREFCNT_dec(tsv);
810b8aa5
GS		 3540 return sv;
3541}
3542
3543STATIC void
cea2e8a9 3544S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 3545{
3546 AV *av;
3547 MAGIC *mg;
3548 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3549 av = (AV*)mg->mg_obj;
3550 else {
3551 av = newAV();
3552 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3553 SvREFCNT_dec(av); /* for sv_magic */
3554 }
3555 av_push(av,sv);
3556}
3557
1c846c1f 3558STATIC void
cea2e8a9 3559S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 3560{
3561 AV *av;
3562 SV **svp;
3563 I32 i;
3564 SV *tsv = SvRV(sv);
3565 MAGIC *mg;
3566 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 3567 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 3568 av = (AV *)mg->mg_obj;
3569 svp = AvARRAY(av);
3570 i = AvFILLp(av);
3571 while (i >= 0) {
3572 if (svp[i] == sv) {
3573 svp[i] = &PL_sv_undef; /* XXX */
3574 }
3575 i--;
3576 }
3577}
3578
954c1994
GS		 3579/*
3580=for apidoc sv_insert
3581
3582Inserts a string at the specified offset/length within the SV. Similar to
3583the Perl substr() function.
3584
3585=cut
3586*/
3587
79072805 3588void
864dbfa3 3589Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 3590{
3591 register char *big;
3592 register char *mid;
3593 register char *midend;
3594 register char *bigend;
3595 register I32 i;
6ff81951 3596 STRLEN curlen;
1c846c1f 3597
79072805 3598
8990e307 3599 if (!bigstr)
cea2e8a9 3600 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 3601 SvPV_force(bigstr, curlen);
60fa28ff 3602 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 3603 if (offset + len > curlen) {
3604 SvGROW(bigstr, offset+len+1);
3605 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3606 SvCUR_set(bigstr, offset+len);
3607 }
79072805 3608
69b47968 3609 SvTAINT(bigstr);
79072805
LW		 3610 i = littlelen - len;
3611 if (i > 0) { /* string might grow */
a0d0e21e 3612 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 3613 mid = big + offset + len;
3614 midend = bigend = big + SvCUR(bigstr);
3615 bigend += i;
3616 *bigend = '\0';
3617 while (midend > mid) /* shove everything down */
3618 *--bigend = *--midend;
3619 Move(little,big+offset,littlelen,char);
3620 SvCUR(bigstr) += i;
3621 SvSETMAGIC(bigstr);
3622 return;
3623 }
3624 else if (i == 0) {
463ee0b2 3625 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 3626 SvSETMAGIC(bigstr);
3627 return;
3628 }
3629
463ee0b2 3630 big = SvPVX(bigstr);
79072805
LW		 3631 mid = big + offset;
3632 midend = mid + len;
3633 bigend = big + SvCUR(bigstr);
3634
3635 if (midend > bigend)
cea2e8a9 3636 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 3637
3638 if (mid - big > bigend - midend) { /* faster to shorten from end */
3639 if (littlelen) {
3640 Move(little, mid, littlelen,char);
3641 mid += littlelen;
3642 }
3643 i = bigend - midend;
3644 if (i > 0) {
3645 Move(midend, mid, i,char);
3646 mid += i;
3647 }
3648 *mid = '\0';
3649 SvCUR_set(bigstr, mid - big);
3650 }
3651 /*SUPPRESS 560*/
155aba94 3652 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 3653 midend -= littlelen;
3654 mid = midend;
3655 sv_chop(bigstr,midend-i);
3656 big += i;
3657 while (i--)
3658 *--midend = *--big;
3659 if (littlelen)
3660 Move(little, mid, littlelen,char);
3661 }
3662 else if (littlelen) {
3663 midend -= littlelen;
3664 sv_chop(bigstr,midend);
3665 Move(little,midend,littlelen,char);
3666 }
3667 else {
3668 sv_chop(bigstr,midend);
3669 }
3670 SvSETMAGIC(bigstr);
3671}
3672
c461cf8f
JH		 3673/*
3674=for apidoc sv_replace
3675
3676Make the first argument a copy of the second, then delete the original.
3677
3678=cut
3679*/
79072805
LW		 3680
3681void
864dbfa3 3682Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805 3683{
0453d815 3684 dTHR;
79072805 3685 U32 refcnt = SvREFCNT(sv);
2213622d 3686 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 3687 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3688 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 3689 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 3690 if (SvMAGICAL(nsv))
3691 mg_free(nsv);
3692 else
3693 sv_upgrade(nsv, SVt_PVMG);
93a17b20 3694 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 3695 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 3696 SvMAGICAL_off(sv);
3697 SvMAGIC(sv) = 0;
3698 }
79072805
LW		 3699 SvREFCNT(sv) = 0;
3700 sv_clear(sv);
477f5d66 3701 assert(!SvREFCNT(sv));
79072805
LW		 3702 StructCopy(nsv,sv,SV);
3703 SvREFCNT(sv) = refcnt;
1edc1566 3704 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 3705 del_SV(nsv);
79072805
LW		 3706}
3707
c461cf8f
JH		 3708/*
3709=for apidoc sv_clear
3710
3711Clear an SV, making it empty. Does not free the memory used by the SV
3712itself.
3713
3714=cut
3715*/
3716
79072805 3717void
864dbfa3 3718Perl_sv_clear(pTHX_ register SV *sv)
79072805 3719{
ec12f114 3720 HV* stash;
79072805
LW		 3721 assert(sv);
3722 assert(SvREFCNT(sv) == 0);
3723
ed6116ce 3724 if (SvOBJECT(sv)) {
e858de61 3725 dTHR;
3280af22 3726 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 3727 djSP;
8ebc5c01 3728 GV* destructor;
837485b6 3729 SV tmpref;
a0d0e21e 3730
837485b6
GS		 3731 Zero(&tmpref, 1, SV);
3732 sv_upgrade(&tmpref, SVt_RV);
3733 SvROK_on(&tmpref);
3734 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3735 SvREFCNT(&tmpref) = 1;
8ebc5c01 3736
4e8e7886
GS		 3737 do {
3738 stash = SvSTASH(sv);
3739 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3740 if (destructor) {
3741 ENTER;
e788e7d3 3742 PUSHSTACKi(PERLSI_DESTROY);
837485b6 3743 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 3744 EXTEND(SP, 2);
3745 PUSHMARK(SP);
837485b6 3746 PUSHs(&tmpref);
4e8e7886 3747 PUTBACK;
864dbfa3
GS		 3748 call_sv((SV*)GvCV(destructor),
3749 G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 3750 SvREFCNT(sv)--;
d3acc0f7 3751 POPSTACK;
3095d977 3752 SPAGAIN;
4e8e7886
GS		 3753 LEAVE;
3754 }
3755 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 3756
837485b6 3757 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 3758
3759 if (SvREFCNT(sv)) {
3760 if (PL_in_clean_objs)
cea2e8a9 3761 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 3762 HvNAME(stash));
3763 /* DESTROY gave object new lease on life */
3764 return;
3765 }
a0d0e21e 3766 }
4e8e7886 3767
a0d0e21e 3768 if (SvOBJECT(sv)) {
4e8e7886 3769 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 3770 SvOBJECT_off(sv); /* Curse the object. */
3771 if (SvTYPE(sv) != SVt_PVIO)
3280af22 3772 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 3773 }
463ee0b2 3774 }
c07a80fd 3775 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 3776 mg_free(sv);
ec12f114 3777 stash = NULL;
79072805 3778 switch (SvTYPE(sv)) {
8990e307 3779 case SVt_PVIO:
df0bd2f4
GS		 3780 if (IoIFP(sv) &&
3781 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 3782 IoIFP(sv) != PerlIO_stdout() &&
3783 IoIFP(sv) != PerlIO_stderr())
93578b34 3784 {
f2b5be74 3785 io_close((IO*)sv, FALSE);
93578b34 3786 }
1d7c1841 3787 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 3788 PerlDir_close(IoDIRP(sv));
1d7c1841 3789 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 3790 Safefree(IoTOP_NAME(sv));
3791 Safefree(IoFMT_NAME(sv));
3792 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 3793 /* FALL THROUGH */
79072805 3794 case SVt_PVBM:
a0d0e21e 3795 goto freescalar;
79072805 3796 case SVt_PVCV:
748a9306 3797 case SVt_PVFM:
85e6fe83 3798 cv_undef((CV*)sv);
a0d0e21e 3799 goto freescalar;
79072805 3800 case SVt_PVHV:
85e6fe83 3801 hv_undef((HV*)sv);
a0d0e21e 3802 break;
79072805 3803 case SVt_PVAV:
85e6fe83 3804 av_undef((AV*)sv);
a0d0e21e 3805 break;
02270b4e
GS		 3806 case SVt_PVLV:
3807 SvREFCNT_dec(LvTARG(sv));
3808 goto freescalar;
a0d0e21e 3809 case SVt_PVGV:
1edc1566 3810 gp_free((GV*)sv);
a0d0e21e 3811 Safefree(GvNAME(sv));
ec12f114
JPC		 3812 /* cannot decrease stash refcount yet, as we might recursively delete
3813 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3814 of stash until current sv is completely gone.
3815 -- JohnPC, 27 Mar 1998 */
3816 stash = GvSTASH(sv);
a0d0e21e 3817 /* FALL THROUGH */
79072805 3818 case SVt_PVMG:
79072805
LW		 3819 case SVt_PVNV:
3820 case SVt_PVIV:
a0d0e21e
LW		 3821 freescalar:
3822 (void)SvOOK_off(sv);
79072805
LW		 3823 /* FALL THROUGH */
3824 case SVt_PV:
a0d0e21e 3825 case SVt_RV:
810b8aa5
GS		 3826 if (SvROK(sv)) {
3827 if (SvWEAKREF(sv))
3828 sv_del_backref(sv);
3829 else
3830 SvREFCNT_dec(SvRV(sv));
3831 }
1edc1566 3832 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 3833 Safefree(SvPVX(sv));
1c846c1f
NIS		 3834 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3835 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3836 SvFAKE_off(sv);
3837 }
79072805 3838 break;
a0d0e21e 3839/*
79072805 3840 case SVt_NV:
79072805 3841 case SVt_IV:
79072805
LW		 3842 case SVt_NULL:
3843 break;
a0d0e21e 3844*/
79072805
LW		 3845 }
3846
3847 switch (SvTYPE(sv)) {
3848 case SVt_NULL:
3849 break;
79072805
LW		 3850 case SVt_IV:
3851 del_XIV(SvANY(sv));
3852 break;
3853 case SVt_NV:
3854 del_XNV(SvANY(sv));
3855 break;
ed6116ce
LW		 3856 case SVt_RV:
3857 del_XRV(SvANY(sv));
3858 break;
79072805
LW		 3859 case SVt_PV:
3860 del_XPV(SvANY(sv));
3861 break;
3862 case SVt_PVIV:
3863 del_XPVIV(SvANY(sv));
3864 break;
3865 case SVt_PVNV:
3866 del_XPVNV(SvANY(sv));
3867 break;
3868 case SVt_PVMG:
3869 del_XPVMG(SvANY(sv));
3870 break;
3871 case SVt_PVLV:
3872 del_XPVLV(SvANY(sv));
3873 break;
3874 case SVt_PVAV:
3875 del_XPVAV(SvANY(sv));
3876 break;
3877 case SVt_PVHV:
3878 del_XPVHV(SvANY(sv));
3879 break;
3880 case SVt_PVCV:
3881 del_XPVCV(SvANY(sv));
3882 break;
3883 case SVt_PVGV:
3884 del_XPVGV(SvANY(sv));
ec12f114
JPC		 3885 /* code duplication for increased performance. */
3886 SvFLAGS(sv) &= SVf_BREAK;
3887 SvFLAGS(sv) |= SVTYPEMASK;
3888 /* decrease refcount of the stash that owns this GV, if any */
3889 if (stash)
3890 SvREFCNT_dec(stash);
3891 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 3892 case SVt_PVBM:
3893 del_XPVBM(SvANY(sv));
3894 break;
3895 case SVt_PVFM:
3896 del_XPVFM(SvANY(sv));
3897 break;
8990e307
LW		 3898 case SVt_PVIO:
3899 del_XPVIO(SvANY(sv));
3900 break;
79072805 3901 }
a0d0e21e 3902 SvFLAGS(sv) &= SVf_BREAK;
8990e307 3903 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 3904}
3905
3906SV *
864dbfa3 3907Perl_sv_newref(pTHX_ SV *sv)
79072805 3908{
463ee0b2 3909 if (sv)
dce16143 3910 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 3911 return sv;
3912}
3913
c461cf8f
JH		 3914/*
3915=for apidoc sv_free
3916
3917Free the memory used by an SV.
3918
3919=cut
3920*/
3921
79072805 3922void
864dbfa3 3923Perl_sv_free(pTHX_ SV *sv)
79072805 3924{
0453d815 3925 dTHR;
dce16143
MB		 3926 int refcount_is_zero;
3927
79072805
LW		 3928 if (!sv)
3929 return;
a0d0e21e
LW		 3930 if (SvREFCNT(sv) == 0) {
3931 if (SvFLAGS(sv) & SVf_BREAK)
3932 return;
3280af22 3933 if (PL_in_clean_all) /* All is fair */
1edc1566 3934 return;
d689ffdd
JP		 3935 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3936 /* make sure SvREFCNT(sv)==0 happens very seldom */
3937 SvREFCNT(sv) = (~(U32)0)/2;
3938 return;
3939 }
0453d815
PM		 3940 if (ckWARN_d(WARN_INTERNAL))
3941 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 3942 return;
3943 }
dce16143
MB		 3944 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3945 if (!refcount_is_zero)
8990e307 3946 return;
463ee0b2
LW		 3947#ifdef DEBUGGING
3948 if (SvTEMP(sv)) {
0453d815 3949 if (ckWARN_d(WARN_DEBUGGING))
f248d071 3950 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 3951 "Attempt to free temp prematurely: SV 0x%"UVxf,
3952 PTR2UV(sv));
79072805 3953 return;
79072805 3954 }
463ee0b2 3955#endif
d689ffdd
JP		 3956 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3957 /* make sure SvREFCNT(sv)==0 happens very seldom */
3958 SvREFCNT(sv) = (~(U32)0)/2;
3959 return;
3960 }
79072805 3961 sv_clear(sv);
477f5d66
CS		 3962 if (! SvREFCNT(sv))
3963 del_SV(sv);
79072805
LW		 3964}
3965
954c1994
GS		 3966/*
3967=for apidoc sv_len
3968
3969Returns the length of the string in the SV. See also C<SvCUR>.
3970
3971=cut
3972*/
3973
79072805 3974STRLEN
864dbfa3 3975Perl_sv_len(pTHX_ register SV *sv)
79072805 3976{
748a9306 3977 char *junk;
463ee0b2 3978 STRLEN len;
79072805
LW		 3979
3980 if (!sv)
3981 return 0;
3982
8990e307 3983 if (SvGMAGICAL(sv))
565764a8 3984 len = mg_length(sv);
8990e307 3985 else
748a9306 3986 junk = SvPV(sv, len);
463ee0b2 3987 return len;
79072805
LW		 3988}
3989
c461cf8f
JH		 3990/*
3991=for apidoc sv_len_utf8
3992
3993Returns the number of characters in the string in an SV, counting wide
3994UTF8 bytes as a single character.
3995
3996=cut
3997*/
3998
a0ed51b3 3999STRLEN
864dbfa3 4000Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 4001{
a0ed51b3
LW		 4002 if (!sv)
4003 return 0;
4004
4005#ifdef NOTYET
4006 if (SvGMAGICAL(sv))
b76347f2 4007 return mg_length(sv);
a0ed51b3
LW		 4008 else
4009#endif
b76347f2
JH		 4010 {
4011 STRLEN len;
4012 U8 *s = (U8*)SvPV(sv, len);
4013
d6efbbad 4014 return Perl_utf8_length(aTHX_ s, s + len);
a0ed51b3 4015 }
a0ed51b3
LW		 4016}
4017
4018void
864dbfa3 4019Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4020{
dfe13c55
GS		 4021 U8 *start;
4022 U8 *s;
4023 U8 *send;
a0ed51b3
LW		 4024 I32 uoffset = *offsetp;
4025 STRLEN len;
4026
4027 if (!sv)
4028 return;
4029
dfe13c55 4030 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4031 send = s + len;
4032 while (s < send && uoffset--)
4033 s += UTF8SKIP(s);
bb40f870
GA		 4034 if (s >= send)
4035 s = send;
a0ed51b3
LW		 4036 *offsetp = s - start;
4037 if (lenp) {
4038 I32 ulen = *lenp;
4039 start = s;
4040 while (s < send && ulen--)
4041 s += UTF8SKIP(s);
bb40f870
GA		 4042 if (s >= send)
4043 s = send;
a0ed51b3
LW		 4044 *lenp = s - start;
4045 }
4046 return;
4047}
4048
4049void
864dbfa3 4050Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4051{
dfe13c55
GS		 4052 U8 *s;
4053 U8 *send;
a0ed51b3
LW		 4054 STRLEN len;
4055
4056 if (!sv)
4057 return;
4058
dfe13c55 4059 s = (U8*)SvPV(sv, len);
a0ed51b3 4060 if (len < *offsetp)
cea2e8a9 4061 Perl_croak(aTHX_ "panic: bad byte offset");
a0ed51b3
LW		 4062 send = s + *offsetp;
4063 len = 0;
4064 while (s < send) {
4065 s += UTF8SKIP(s);
4066 ++len;
4067 }
4068 if (s != send) {
0453d815 4069 dTHR;
1c846c1f 4070 if (ckWARN_d(WARN_UTF8))
0453d815 4071 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
a0ed51b3
LW		 4072 --len;
4073 }
4074 *offsetp = len;
4075 return;
4076}
4077
954c1994
GS		 4078/*
4079=for apidoc sv_eq
4080
4081Returns a boolean indicating whether the strings in the two SVs are
4082identical.
4083
4084=cut
4085*/
4086
79072805 4087I32
e01b9e88 4088Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
79072805
LW		 4089{
4090 char *pv1;
463ee0b2 4091 STRLEN cur1;
79072805 4092 char *pv2;
463ee0b2 4093 STRLEN cur2;
e01b9e88
SC		 4094 I32 eq = 0;
4095 bool pv1tmp = FALSE;
4096 bool pv2tmp = FALSE;
79072805 4097
e01b9e88 4098 if (!sv1) {
79072805
LW		 4099 pv1 = "";
4100 cur1 = 0;
4101 }
463ee0b2 4102 else
e01b9e88 4103 pv1 = SvPV(sv1, cur1);
79072805 4104
e01b9e88
SC		 4105 if (!sv2){
4106 pv2 = "";
4107 cur2 = 0;
92d29cee 4108 }
e01b9e88
SC		 4109 else
4110 pv2 = SvPV(sv2, cur2);
79072805 4111
e01b9e88 4112 /* do not utf8ize the comparands as a side-effect */
7bbb0251 4113 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
e01b9e88
SC		 4114 if (SvUTF8(sv1)) {
4115 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4116 pv2tmp = TRUE;
4117 }
4118 else {
4119 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4120 pv1tmp = TRUE;
4121 }
4122 }
79072805 4123
e01b9e88
SC		 4124 if (cur1 == cur2)
4125 eq = memEQ(pv1, pv2, cur1);
4126
4127 if (pv1tmp)
4128 Safefree(pv1);
4129 if (pv2tmp)
4130 Safefree(pv2);
4131
4132 return eq;
79072805
LW		 4133}
4134
954c1994
GS		 4135/*
4136=for apidoc sv_cmp
4137
4138Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4139string in C<sv1> is less than, equal to, or greater than the string in
4140C<sv2>.
4141
4142=cut
4143*/
4144
79072805 4145I32
e01b9e88 4146Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
79072805 4147{
560a288e
GS		 4148 STRLEN cur1, cur2;
4149 char *pv1, *pv2;
1c846c1f 4150 I32 cmp;
e01b9e88
SC		 4151 bool pv1tmp = FALSE;
4152 bool pv2tmp = FALSE;
560a288e 4153
e01b9e88
SC		 4154 if (!sv1) {
4155 pv1 = "";
560a288e
GS		 4156 cur1 = 0;
4157 }
e01b9e88
SC		 4158 else
4159 pv1 = SvPV(sv1, cur1);
560a288e 4160
e01b9e88
SC		 4161 if (!sv2){
4162 pv2 = "";
560a288e
GS		 4163 cur2 = 0;
4164 }
e01b9e88
SC		 4165 else
4166 pv2 = SvPV(sv2, cur2);
79072805 4167
e01b9e88
SC		 4168 /* do not utf8ize the comparands as a side-effect */
4169 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4170 if (SvUTF8(sv1)) {
4171 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4172 pv2tmp = TRUE;
4173 }
4174 else {
4175 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4176 pv1tmp = TRUE;
4177 }
4178 }
79072805 4179
e01b9e88
SC		 4180 if (!cur1) {
4181 cmp = cur2 ? -1 : 0;
4182 } else if (!cur2) {
4183 cmp = 1;
4184 } else {
4185 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4186
4187 if (retval) {
4188 cmp = retval < 0 ? -1 : 1;
4189 } else if (cur1 == cur2) {
4190 cmp = 0;
4191 } else {
4192 cmp = cur1 < cur2 ? -1 : 1;
4193 }
4194 }
16660edb 4195
e01b9e88
SC		 4196 if (pv1tmp)
4197 Safefree(pv1);
4198 if (pv2tmp)
4199 Safefree(pv2);
16660edb 4200
e01b9e88 4201 return cmp;
bbce6d69 4202}
16660edb 4203
c461cf8f
JH		 4204/*
4205=for apidoc sv_cmp_locale
4206
4207Compares the strings in two SVs in a locale-aware manner. See
4208L</sv_cmp_locale>
4209
4210=cut
4211*/
4212
bbce6d69 4213I32
864dbfa3 4214Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4215{
36477c24 4216#ifdef USE_LOCALE_COLLATE
16660edb 4217
bbce6d69 4218 char *pv1, *pv2;
4219 STRLEN len1, len2;
4220 I32 retval;
16660edb 4221
3280af22 4222 if (PL_collation_standard)
bbce6d69 4223 goto raw_compare;
16660edb 4224
bbce6d69 4225 len1 = 0;
8ac85365 4226 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4227 len2 = 0;
8ac85365 4228 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4229
bbce6d69 4230 if (!pv1 || !len1) {
4231 if (pv2 && len2)
4232 return -1;
4233 else
4234 goto raw_compare;
4235 }
4236 else {
4237 if (!pv2 || !len2)
4238 return 1;
4239 }
16660edb 4240
bbce6d69 4241 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4242
bbce6d69 4243 if (retval)
16660edb 4244 return retval < 0 ? -1 : 1;
4245
bbce6d69 4246 /*
4247 * When the result of collation is equality, that doesn't mean
4248 * that there are no differences -- some locales exclude some
4249 * characters from consideration. So to avoid false equalities,
4250 * we use the raw string as a tiebreaker.
4251 */
16660edb 4252
bbce6d69 4253 raw_compare:
4254 /* FALL THROUGH */
16660edb 4255
36477c24 4256#endif /* USE_LOCALE_COLLATE */
16660edb 4257
bbce6d69 4258 return sv_cmp(sv1, sv2);
4259}
79072805 4260
36477c24 4261#ifdef USE_LOCALE_COLLATE
7a4c00b4 4262/*
4263 * Any scalar variable may carry an 'o' magic that contains the
4264 * scalar data of the variable transformed to such a format that
4265 * a normal memory comparison can be used to compare the data
4266 * according to the locale settings.
4267 */
bbce6d69 4268char *
864dbfa3 4269Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4270{
7a4c00b4 4271 MAGIC *mg;
16660edb 4272
8ac85365 4273 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4274 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4275 char *s, *xf;
4276 STRLEN len, xlen;
4277
7a4c00b4 4278 if (mg)
4279 Safefree(mg->mg_ptr);
bbce6d69 4280 s = SvPV(sv, len);
4281 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4282 if (SvREADONLY(sv)) {
4283 SAVEFREEPV(xf);
4284 *nxp = xlen;
3280af22 4285 return xf + sizeof(PL_collation_ix);
ff0cee69 4286 }
7a4c00b4 4287 if (! mg) {
4288 sv_magic(sv, 0, 'o', 0, 0);
4289 mg = mg_find(sv, 'o');
4290 assert(mg);
bbce6d69 4291 }
7a4c00b4 4292 mg->mg_ptr = xf;
565764a8 4293 mg->mg_len = xlen;
7a4c00b4 4294 }
4295 else {
ff0cee69 4296 if (mg) {
4297 mg->mg_ptr = NULL;
565764a8 4298 mg->mg_len = -1;
ff0cee69 4299 }
bbce6d69 4300 }
4301 }
7a4c00b4 4302 if (mg && mg->mg_ptr) {
565764a8 4303 *nxp = mg->mg_len;
3280af22 4304 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4305 }
4306 else {
4307 *nxp = 0;
4308 return NULL;
16660edb 4309 }
79072805
LW		 4310}
4311
36477c24 4312#endif /* USE_LOCALE_COLLATE */
bbce6d69 4313
c461cf8f
JH		 4314/*
4315=for apidoc sv_gets
4316
4317Get a line from the filehandle and store it into the SV, optionally
4318appending to the currently-stored string.
4319
4320=cut
4321*/
4322
79072805 4323char *
864dbfa3 4324Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4325{
aeea060c 4326 dTHR;
c07a80fd 4327 char *rsptr;
4328 STRLEN rslen;
4329 register STDCHAR rslast;
4330 register STDCHAR *bp;
4331 register I32 cnt;
4332 I32 i;
4333
2213622d 4334 SV_CHECK_THINKFIRST(sv);
6fc92669 4335 (void)SvUPGRADE(sv, SVt_PV);
99491443 4336
ff68c719 4337 SvSCREAM_off(sv);
c07a80fd 4338
3280af22 4339 if (RsSNARF(PL_rs)) {
c07a80fd 4340 rsptr = NULL;
4341 rslen = 0;
4342 }
3280af22 4343 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4344 I32 recsize, bytesread;
4345 char *buffer;
4346
4347 /* Grab the size of the record we're getting */
3280af22 4348 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4349 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4350 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4351 /* Go yank in */
4352#ifdef VMS
4353 /* VMS wants read instead of fread, because fread doesn't respect */
4354 /* RMS record boundaries. This is not necessarily a good thing to be */
4355 /* doing, but we've got no other real choice */
4356 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4357#else
4358 bytesread = PerlIO_read(fp, buffer, recsize);
4359#endif
4360 SvCUR_set(sv, bytesread);
e670df4e 4361 buffer[bytesread] = '\0';
5b2b9c68
HM		 4362 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4363 }
3280af22 4364 else if (RsPARA(PL_rs)) {
c07a80fd 4365 rsptr = "\n\n";
4366 rslen = 2;
4367 }
4368 else
3280af22 4369 rsptr = SvPV(PL_rs, rslen);
c07a80fd 4370 rslast = rslen ? rsptr[rslen - 1] : '\0';
4371
3280af22 4372 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4373 do { /* to make sure file boundaries work right */
760ac839 4374 if (PerlIO_eof(fp))
a0d0e21e 4375 return 0;
760ac839 4376 i = PerlIO_getc(fp);
79072805 4377 if (i != '\n') {
a0d0e21e
LW		 4378 if (i == -1)
4379 return 0;
760ac839 4380 PerlIO_ungetc(fp,i);
79072805
LW		 4381 break;
4382 }
4383 } while (i != EOF);
4384 }
c07a80fd 4385
760ac839
LW		 4386 /* See if we know enough about I/O mechanism to cheat it ! */
4387
4388 /* This used to be #ifdef test - it is made run-time test for ease
1c846c1f 4389 of abstracting out stdio interface. One call should be cheap
760ac839
LW		 4390 enough here - and may even be a macro allowing compile
4391 time optimization.
4392 */
4393
4394 if (PerlIO_fast_gets(fp)) {
4395
4396 /*
4397 * We're going to steal some values from the stdio struct
4398 * and put EVERYTHING in the innermost loop into registers.
4399 */
4400 register STDCHAR *ptr;
4401 STRLEN bpx;
4402 I32 shortbuffered;
4403
16660edb 4404#if defined(VMS) && defined(PERLIO_IS_STDIO)
4405 /* An ungetc()d char is handled separately from the regular
4406 * buffer, so we getc() it back out and stuff it in the buffer.
4407 */
4408 i = PerlIO_getc(fp);
4409 if (i == EOF) return 0;
4410 *(--((*fp)->_ptr)) = (unsigned char) i;
4411 (*fp)->_cnt++;
4412#endif
c07a80fd 4413
c2960299 4414 /* Here is some breathtakingly efficient cheating */
c07a80fd 4415
a20bf0c3 4416 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 4417 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 4418 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4419 if (cnt > 80 && SvLEN(sv) > append) {
4420 shortbuffered = cnt - SvLEN(sv) + append + 1;
4421 cnt -= shortbuffered;
4422 }
4423 else {
4424 shortbuffered = 0;
bbce6d69 4425 /* remember that cnt can be negative */
4426 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 4427 }
4428 }
4429 else
4430 shortbuffered = 0;
c07a80fd 4431 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 4432 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 4433 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4434 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 4435 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4436 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4437 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4438 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 4439 for (;;) {
4440 screamer:
93a17b20 4441 if (cnt > 0) {
c07a80fd 4442 if (rslen) {
760ac839
LW		 4443 while (cnt > 0) { /* this | eat */
4444 cnt--;
c07a80fd 4445 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4446 goto thats_all_folks; /* screams | sed :-) */
4447 }
4448 }
4449 else {
1c846c1f
NIS		 4450 Copy(ptr, bp, cnt, char); /* this | eat */
4451 bp += cnt; /* screams | dust */
c07a80fd 4452 ptr += cnt; /* louder | sed :-) */
a5f75d66 4453 cnt = 0;
93a17b20 4454 }
79072805
LW		 4455 }
4456
748a9306 4457 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 4458 cnt = shortbuffered;
4459 shortbuffered = 0;
c07a80fd 4460 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4461 SvCUR_set(sv, bpx);
4462 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 4463 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 4464 continue;
4465 }
4466
16660edb 4467 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4468 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4469 PTR2UV(ptr),(long)cnt));
a20bf0c3 4470 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 4471 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4472 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4473 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4474 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
1c846c1f 4475 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 4476 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4477 another abstraction. */
760ac839 4478 i = PerlIO_getc(fp); /* get more characters */
16660edb 4479 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4480 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4481 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4482 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 4483 cnt = PerlIO_get_cnt(fp);
4484 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 4485 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4486 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 4487
748a9306
LW		 4488 if (i == EOF) /* all done for ever? */
4489 goto thats_really_all_folks;
4490
c07a80fd 4491 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4492 SvCUR_set(sv, bpx);
4493 SvGROW(sv, bpx + cnt + 2);
c07a80fd 4494 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4495
760ac839 4496 *bp++ = i; /* store character from PerlIO_getc */
79072805 4497
c07a80fd 4498 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 4499 goto thats_all_folks;
79072805
LW		 4500 }
4501
4502thats_all_folks:
c07a80fd 4503 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 4504 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 4505 goto screamer; /* go back to the fray */
79072805
LW		 4506thats_really_all_folks:
4507 if (shortbuffered)
4508 cnt += shortbuffered;
16660edb 4509 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4510 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 4511 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 4512 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4513 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4514 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4515 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 4516 *bp = '\0';
760ac839 4517 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 4518 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 4519 "Screamer: done, len=%ld, string=|%.*s|\n",
4520 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 4521 }
4522 else
79072805 4523 {
4d2c4e07 4524#ifndef EPOC
760ac839 4525 /*The big, slow, and stupid way */
c07a80fd 4526 STDCHAR buf[8192];
4d2c4e07
OF		 4527#else
4528 /* Need to work around EPOC SDK features */
4529 /* On WINS: MS VC5 generates calls to _chkstk, */
4530 /* if a `large' stack frame is allocated */
4531 /* gcc on MARM does not generate calls like these */
4532 STDCHAR buf[1024];
4533#endif
79072805 4534
760ac839 4535screamer2:
c07a80fd 4536 if (rslen) {
760ac839
LW		 4537 register STDCHAR *bpe = buf + sizeof(buf);
4538 bp = buf;
4539 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4540 ; /* keep reading */
4541 cnt = bp - buf;
c07a80fd 4542 }
4543 else {
760ac839 4544 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 4545 /* Accomodate broken VAXC compiler, which applies U8 cast to
4546 * both args of ?: operator, causing EOF to change into 255
4547 */
4548 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 4549 }
79072805
LW		 4550
4551 if (append)
760ac839 4552 sv_catpvn(sv, (char *) buf, cnt);
79072805 4553 else
760ac839 4554 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 4555
4556 if (i != EOF && /* joy */
4557 (!rslen ||
4558 SvCUR(sv) < rslen ||
36477c24 4559 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 4560 {
4561 append = -1;
63e4d877
CS		 4562 /*
4563 * If we're reading from a TTY and we get a short read,
4564 * indicating that the user hit his EOF character, we need
4565 * to notice it now, because if we try to read from the TTY
4566 * again, the EOF condition will disappear.
4567 *
4568 * The comparison of cnt to sizeof(buf) is an optimization
4569 * that prevents unnecessary calls to feof().
4570 *
4571 * - jik 9/25/96
4572 */
4573 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4574 goto screamer2;
79072805
LW		 4575 }
4576 }
4577
1c846c1f 4578 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 4579 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 4580 i = PerlIO_getc(fp);
79072805 4581 if (i != '\n') {
760ac839 4582 PerlIO_ungetc(fp,i);
79072805
LW		 4583 break;
4584 }
4585 }
4586 }
c07a80fd 4587
4588 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 4589}
4590
760ac839 4591
954c1994
GS		 4592/*
4593=for apidoc sv_inc
4594
4595Auto-increment of the value in the SV.
4596
4597=cut
4598*/
4599
79072805 4600void
864dbfa3 4601Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 4602{
4603 register char *d;
463ee0b2 4604 int flags;
79072805
LW		 4605
4606 if (!sv)
4607 return;
b23a5f78
GB		 4608 if (SvGMAGICAL(sv))
4609 mg_get(sv);
ed6116ce 4610 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4611 if (SvREADONLY(sv)) {
4612 dTHR;
3280af22 4613 if (PL_curcop != &PL_compiling)
cea2e8a9 4614 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4615 }
a0d0e21e 4616 if (SvROK(sv)) {
b5be31e9 4617 IV i;
9e7bc3e8
JD		 4618 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4619 return;
56431972 4620 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4621 sv_unref(sv);
4622 sv_setiv(sv, i);
a0d0e21e 4623 }
ed6116ce 4624 }
8990e307 4625 flags = SvFLAGS(sv);
8990e307 4626 if (flags & SVp_NOK) {
a0d0e21e 4627 (void)SvNOK_only(sv);
55497cff 4628 SvNVX(sv) += 1.0;
4629 return;
4630 }
4631 if (flags & SVp_IOK) {
25da4f38
IZ		 4632 if (SvIsUV(sv)) {
4633 if (SvUVX(sv) == UV_MAX)
65202027 4634 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 4635 else
4636 (void)SvIOK_only_UV(sv);
4637 ++SvUVX(sv);
4638 } else {
4639 if (SvIVX(sv) == IV_MAX)
65202027 4640 sv_setnv(sv, (NV)IV_MAX + 1.0);
25da4f38
IZ		 4641 else {
4642 (void)SvIOK_only(sv);
4643 ++SvIVX(sv);
1c846c1f 4644 }
55497cff 4645 }
79072805
LW		 4646 return;
4647 }
8990e307 4648 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4633a7c4
LW		 4649 if ((flags & SVTYPEMASK) < SVt_PVNV)
4650 sv_upgrade(sv, SVt_NV);
463ee0b2 4651 SvNVX(sv) = 1.0;
a0d0e21e 4652 (void)SvNOK_only(sv);
79072805
LW		 4653 return;
4654 }
463ee0b2 4655 d = SvPVX(sv);
79072805
LW		 4656 while (isALPHA(*d)) d++;
4657 while (isDIGIT(*d)) d++;
4658 if (*d) {
097ee67d 4659 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
79072805
LW		 4660 return;
4661 }
4662 d--;
463ee0b2 4663 while (d >= SvPVX(sv)) {
79072805
LW		 4664 if (isDIGIT(*d)) {
4665 if (++*d <= '9')
4666 return;
4667 *(d--) = '0';
4668 }
4669 else {
9d116dd7
JH		 4670#ifdef EBCDIC
4671 /* MKS: The original code here died if letters weren't consecutive.
4672 * at least it didn't have to worry about non-C locales. The
4673 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
1c846c1f 4674 * arranged in order (although not consecutively) and that only
9d116dd7
JH		 4675 * [A-Za-z] are accepted by isALPHA in the C locale.
4676 */
4677 if (*d != 'z' && *d != 'Z') {
4678 do { ++*d; } while (!isALPHA(*d));
4679 return;
4680 }
4681 *(d--) -= 'z' - 'a';
4682#else
79072805
LW		 4683 ++*d;
4684 if (isALPHA(*d))
4685 return;
4686 *(d--) -= 'z' - 'a' + 1;
9d116dd7 4687#endif
79072805
LW		 4688 }
4689 }
4690 /* oh,oh, the number grew */
4691 SvGROW(sv, SvCUR(sv) + 2);
4692 SvCUR(sv)++;
463ee0b2 4693 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 4694 *d = d[-1];
4695 if (isDIGIT(d[1]))
4696 *d = '1';
4697 else
4698 *d = d[1];
4699}
4700
954c1994
GS		 4701/*
4702=for apidoc sv_dec
4703
4704Auto-decrement of the value in the SV.
4705
4706=cut
4707*/
4708
79072805 4709void
864dbfa3 4710Perl_sv_dec(pTHX_ register SV *sv)
79072805 4711{
463ee0b2
LW		 4712 int flags;
4713
79072805
LW		 4714 if (!sv)
4715 return;
b23a5f78
GB		 4716 if (SvGMAGICAL(sv))
4717 mg_get(sv);
ed6116ce 4718 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4719 if (SvREADONLY(sv)) {
4720 dTHR;
3280af22 4721 if (PL_curcop != &PL_compiling)
cea2e8a9 4722 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4723 }
a0d0e21e 4724 if (SvROK(sv)) {
b5be31e9 4725 IV i;
9e7bc3e8
JD		 4726 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4727 return;
56431972 4728 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4729 sv_unref(sv);
4730 sv_setiv(sv, i);
a0d0e21e 4731 }
ed6116ce 4732 }
8990e307 4733 flags = SvFLAGS(sv);
8990e307 4734 if (flags & SVp_NOK) {
463ee0b2 4735 SvNVX(sv) -= 1.0;
a0d0e21e 4736 (void)SvNOK_only(sv);
79072805
LW		 4737 return;
4738 }
55497cff 4739 if (flags & SVp_IOK) {
25da4f38
IZ		 4740 if (SvIsUV(sv)) {
4741 if (SvUVX(sv) == 0) {
4742 (void)SvIOK_only(sv);
4743 SvIVX(sv) = -1;
4744 }
4745 else {
4746 (void)SvIOK_only_UV(sv);
4747 --SvUVX(sv);
1c846c1f 4748 }
25da4f38
IZ		 4749 } else {
4750 if (SvIVX(sv) == IV_MIN)
65202027 4751 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 4752 else {
4753 (void)SvIOK_only(sv);
4754 --SvIVX(sv);
1c846c1f 4755 }
55497cff 4756 }
4757 return;
4758 }
8990e307 4759 if (!(flags & SVp_POK)) {
4633a7c4
LW		 4760 if ((flags & SVTYPEMASK) < SVt_PVNV)
4761 sv_upgrade(sv, SVt_NV);
463ee0b2 4762 SvNVX(sv) = -1.0;
a0d0e21e 4763 (void)SvNOK_only(sv);
79072805
LW		 4764 return;
4765 }
097ee67d 4766 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 4767}
4768
954c1994
GS		 4769/*
4770=for apidoc sv_mortalcopy
4771
4772Creates a new SV which is a copy of the original SV. The new SV is marked
4773as mortal.
4774
4775=cut
4776*/
4777
79072805
LW		 4778/* Make a string that will exist for the duration of the expression
4779 * evaluation. Actually, it may have to last longer than that, but
4780 * hopefully we won't free it until it has been assigned to a
4781 * permanent location. */
4782
4783SV *
864dbfa3 4784Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 4785{
11343788 4786 dTHR;
463ee0b2 4787 register SV *sv;
79072805 4788
4561caa4 4789 new_SV(sv);
79072805 4790 sv_setsv(sv,oldstr);
677b06e3
GS		 4791 EXTEND_MORTAL(1);
4792 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 4793 SvTEMP_on(sv);
4794 return sv;
4795}
4796
954c1994
GS		 4797/*
4798=for apidoc sv_newmortal
4799
4800Creates a new SV which is mortal. The reference count of the SV is set to 1.
4801
4802=cut
4803*/
4804
8990e307 4805SV *
864dbfa3 4806Perl_sv_newmortal(pTHX)
8990e307 4807{
11343788 4808 dTHR;
8990e307
LW		 4809 register SV *sv;
4810
4561caa4 4811 new_SV(sv);
8990e307 4812 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 4813 EXTEND_MORTAL(1);
4814 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 4815 return sv;
4816}
4817
954c1994
GS		 4818/*
4819=for apidoc sv_2mortal
4820
4821Marks an SV as mortal. The SV will be destroyed when the current context
4822ends.
4823
4824=cut
4825*/
4826
79072805
LW		 4827/* same thing without the copying */
4828
4829SV *
864dbfa3 4830Perl_sv_2mortal(pTHX_ register SV *sv)
79072805 4831{
11343788 4832 dTHR;
79072805
LW		 4833 if (!sv)
4834 return sv;
d689ffdd 4835 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 4836 return sv;
677b06e3
GS		 4837 EXTEND_MORTAL(1);
4838 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 4839 SvTEMP_on(sv);
79072805
LW		 4840 return sv;
4841}
4842
954c1994
GS		 4843/*
4844=for apidoc newSVpv
4845
4846Creates a new SV and copies a string into it. The reference count for the
4847SV is set to 1. If C<len> is zero, Perl will compute the length using
4848strlen(). For efficiency, consider using C<newSVpvn> instead.
4849
4850=cut
4851*/
4852
79072805 4853SV *
864dbfa3 4854Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 4855{
463ee0b2 4856 register SV *sv;
79072805 4857
4561caa4 4858 new_SV(sv);
79072805
LW		 4859 if (!len)
4860 len = strlen(s);
4861 sv_setpvn(sv,s,len);
4862 return sv;
4863}
4864
954c1994
GS		 4865/*
4866=for apidoc newSVpvn
4867
4868Creates a new SV and copies a string into it. The reference count for the
1c846c1f 4869SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
954c1994
GS		 4870string. You are responsible for ensuring that the source string is at least
4871C<len> bytes long.
4872
4873=cut
4874*/
4875
9da1e3b5 4876SV *
864dbfa3 4877Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 4878{
4879 register SV *sv;
4880
4881 new_SV(sv);
9da1e3b5
MUN		 4882 sv_setpvn(sv,s,len);
4883 return sv;
4884}
4885
1c846c1f
NIS		 4886/*
4887=for apidoc newSVpvn_share
4888
4889Creates a new SV and populates it with a string from
4890the string table. Turns on READONLY and FAKE.
4891The idea here is that as string table is used for shared hash
4892keys these strings will have SvPVX == HeKEY and hash lookup
4893will avoid string compare.
4894
4895=cut
4896*/
4897
4898SV *
4899Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4900{
4901 register SV *sv;
4902 if (!hash)
4903 PERL_HASH(hash, src, len);
4904 new_SV(sv);
4905 sv_upgrade(sv, SVt_PVIV);
4906 SvPVX(sv) = sharepvn(src, len, hash);
4907 SvCUR(sv) = len;
4908 SvUVX(sv) = hash;
4909 SvLEN(sv) = 0;
4910 SvREADONLY_on(sv);
4911 SvFAKE_on(sv);
4912 SvPOK_on(sv);
4913 return sv;
4914}
4915
cea2e8a9 4916#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 4917SV *
cea2e8a9 4918Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 4919{
cea2e8a9 4920 dTHX;
46fc3d4c 4921 register SV *sv;
4922 va_list args;
46fc3d4c 4923 va_start(args, pat);
c5be433b 4924 sv = vnewSVpvf(pat, &args);
46fc3d4c 4925 va_end(args);
4926 return sv;
4927}
cea2e8a9 4928#endif
46fc3d4c 4929
954c1994
GS		 4930/*
4931=for apidoc newSVpvf
4932
4933Creates a new SV an initialize it with the string formatted like
4934C<sprintf>.
4935
4936=cut
4937*/
4938
cea2e8a9
GS		 4939SV *
4940Perl_newSVpvf(pTHX_ const char* pat, ...)
4941{
4942 register SV *sv;
4943 va_list args;
cea2e8a9 4944 va_start(args, pat);
c5be433b 4945 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 4946 va_end(args);
4947 return sv;
4948}
46fc3d4c 4949
79072805 4950SV *
c5be433b
GS		 4951Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4952{
4953 register SV *sv;
4954 new_SV(sv);
4955 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4956 return sv;
4957}
4958
954c1994
GS		 4959/*
4960=for apidoc newSVnv
4961
4962Creates a new SV and copies a floating point value into it.
4963The reference count for the SV is set to 1.
4964
4965=cut
4966*/
4967
c5be433b 4968SV *
65202027 4969Perl_newSVnv(pTHX_ NV n)
79072805 4970{
463ee0b2 4971 register SV *sv;
79072805 4972
4561caa4 4973 new_SV(sv);
79072805
LW		 4974 sv_setnv(sv,n);
4975 return sv;
4976}
4977
954c1994
GS		 4978/*
4979=for apidoc newSViv
4980
4981Creates a new SV and copies an integer into it. The reference count for the
4982SV is set to 1.
4983
4984=cut
4985*/
4986
79072805 4987SV *
864dbfa3 4988Perl_newSViv(pTHX_ IV i)
79072805 4989{
463ee0b2 4990 register SV *sv;
79072805 4991
4561caa4 4992 new_SV(sv);
79072805
LW		 4993 sv_setiv(sv,i);
4994 return sv;
4995}
4996
954c1994 4997/*
1a3327fb
JH		 4998=for apidoc newSVuv
4999
5000Creates a new SV and copies an unsigned integer into it.
5001The reference count for the SV is set to 1.
5002
5003=cut
5004*/
5005
5006SV *
5007Perl_newSVuv(pTHX_ UV u)
5008{
5009 register SV *sv;
5010
5011 new_SV(sv);
5012 sv_setuv(sv,u);
5013 return sv;
5014}
5015
5016/*
954c1994
GS		 5017=for apidoc newRV_noinc
5018
5019Creates an RV wrapper for an SV. The reference count for the original
5020SV is B<not> incremented.
5021
5022=cut
5023*/
5024
2304df62 5025SV *
864dbfa3 5026Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62 5027{
11343788 5028 dTHR;
2304df62
AD		 5029 register SV *sv;
5030
4561caa4 5031 new_SV(sv);
2304df62 5032 sv_upgrade(sv, SVt_RV);
76e3520e 5033 SvTEMP_off(tmpRef);
d689ffdd 5034 SvRV(sv) = tmpRef;
2304df62 5035 SvROK_on(sv);
2304df62
AD		 5036 return sv;
5037}
5038
954c1994 5039/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5040SV *
864dbfa3 5041Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5042{
5f6447b6 5043 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5044}
5f05dabc 5045
954c1994
GS		 5046/*
5047=for apidoc newSVsv
5048
5049Creates a new SV which is an exact duplicate of the original SV.
5050
5051=cut
5052*/
5053
79072805
LW		 5054/* make an exact duplicate of old */
5055
5056SV *
864dbfa3 5057Perl_newSVsv(pTHX_ register SV *old)
79072805 5058{
0453d815 5059 dTHR;
463ee0b2 5060 register SV *sv;
79072805
LW		 5061
5062 if (!old)
5063 return Nullsv;
8990e307 5064 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5065 if (ckWARN_d(WARN_INTERNAL))
5066 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5067 return Nullsv;
5068 }
4561caa4 5069 new_SV(sv);
ff68c719 5070 if (SvTEMP(old)) {
5071 SvTEMP_off(old);
463ee0b2 5072 sv_setsv(sv,old);
ff68c719 5073 SvTEMP_on(old);
79072805
LW		 5074 }
5075 else
463ee0b2
LW		 5076 sv_setsv(sv,old);
5077 return sv;
79072805
LW		 5078}
5079
5080void
864dbfa3 5081Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5082{
5083 register HE *entry;
5084 register GV *gv;
5085 register SV *sv;
5086 register I32 i;
5087 register PMOP *pm;
5088 register I32 max;
4802d5d7 5089 char todo[PERL_UCHAR_MAX+1];
79072805 5090
49d8d3a1
MB		 5091 if (!stash)
5092 return;
5093
79072805
LW		 5094 if (!*s) { /* reset ?? searches */
5095 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5096 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5097 }
5098 return;
5099 }
5100
5101 /* reset variables */
5102
5103 if (!HvARRAY(stash))
5104 return;
463ee0b2
LW		 5105
5106 Zero(todo, 256, char);
79072805 5107 while (*s) {
4802d5d7 5108 i = (unsigned char)*s;
79072805
LW		 5109 if (s[1] == '-') {
5110 s += 2;
5111 }
4802d5d7 5112 max = (unsigned char)*s++;
79072805 5113 for ( ; i <= max; i++) {
463ee0b2
LW		 5114 todo[i] = 1;
5115 }
a0d0e21e 5116 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5117 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5118 entry;
5119 entry = HeNEXT(entry))
5120 {
1edc1566 5121 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5122 continue;
1edc1566 5123 gv = (GV*)HeVAL(entry);
79072805 5124 sv = GvSV(gv);
9e35f4b3
GS		 5125 if (SvTHINKFIRST(sv)) {
5126 if (!SvREADONLY(sv) && SvROK(sv))
5127 sv_unref(sv);
5128 continue;
5129 }
a0d0e21e 5130 (void)SvOK_off(sv);
79072805
LW		 5131 if (SvTYPE(sv) >= SVt_PV) {
5132 SvCUR_set(sv, 0);
463ee0b2
LW		 5133 if (SvPVX(sv) != Nullch)
5134 *SvPVX(sv) = '\0';
44a8e56a 5135 SvTAINT(sv);
79072805
LW		 5136 }
5137 if (GvAV(gv)) {
5138 av_clear(GvAV(gv));
5139 }
44a8e56a 5140 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5141 hv_clear(GvHV(gv));
fa6a1c44 5142#ifdef USE_ENVIRON_ARRAY
3280af22 5143 if (gv == PL_envgv)
79072805 5144 environ[0] = Nullch;
a0d0e21e 5145#endif
79072805
LW		 5146 }
5147 }
5148 }
5149 }
5150}
5151
46fc3d4c 5152IO*
864dbfa3 5153Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5154{
5155 IO* io;
5156 GV* gv;
2d8e6c8d 5157 STRLEN n_a;
46fc3d4c 5158
5159 switch (SvTYPE(sv)) {
5160 case SVt_PVIO:
5161 io = (IO*)sv;
5162 break;
5163 case SVt_PVGV:
5164 gv = (GV*)sv;
5165 io = GvIO(gv);
5166 if (!io)
cea2e8a9 5167 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5168 break;
5169 default:
5170 if (!SvOK(sv))
cea2e8a9 5171 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5172 if (SvROK(sv))
5173 return sv_2io(SvRV(sv));
2d8e6c8d 5174 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5175 if (gv)
5176 io = GvIO(gv);
5177 else
5178 io = 0;
5179 if (!io)
cea2e8a9 5180 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5181 break;
5182 }
5183 return io;
5184}
5185
79072805 5186CV *
864dbfa3 5187Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5188{
5189 GV *gv;
5190 CV *cv;
2d8e6c8d 5191 STRLEN n_a;
79072805
LW		 5192
5193 if (!sv)
93a17b20 5194 return *gvp = Nullgv, Nullcv;
79072805 5195 switch (SvTYPE(sv)) {
79072805
LW		 5196 case SVt_PVCV:
5197 *st = CvSTASH(sv);
5198 *gvp = Nullgv;
5199 return (CV*)sv;
5200 case SVt_PVHV:
5201 case SVt_PVAV:
5202 *gvp = Nullgv;
5203 return Nullcv;
8990e307
LW		 5204 case SVt_PVGV:
5205 gv = (GV*)sv;
a0d0e21e 5206 *gvp = gv;
8990e307
LW		 5207 *st = GvESTASH(gv);
5208 goto fix_gv;
5209
79072805 5210 default:
a0d0e21e
LW		 5211 if (SvGMAGICAL(sv))
5212 mg_get(sv);
5213 if (SvROK(sv)) {
0f4592ef 5214 dTHR;
f5284f61
IZ		 5215 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5216 tryAMAGICunDEREF(to_cv);
5217
62f274bf
GS		 5218 sv = SvRV(sv);
5219 if (SvTYPE(sv) == SVt_PVCV) {
5220 cv = (CV*)sv;
5221 *gvp = Nullgv;
5222 *st = CvSTASH(cv);
5223 return cv;
5224 }
5225 else if(isGV(sv))
5226 gv = (GV*)sv;
5227 else
cea2e8a9 5228 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5229 }
62f274bf 5230 else if (isGV(sv))
79072805
LW		 5231 gv = (GV*)sv;
5232 else
2d8e6c8d 5233 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5234 *gvp = gv;
5235 if (!gv)
5236 return Nullcv;
5237 *st = GvESTASH(gv);
8990e307 5238 fix_gv:
8ebc5c01 5239 if (lref && !GvCVu(gv)) {
4633a7c4 5240 SV *tmpsv;
748a9306 5241 ENTER;
4633a7c4 5242 tmpsv = NEWSV(704,0);
16660edb 5243 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5244 /* XXX this is probably not what they think they're getting.
5245 * It has the same effect as "sub name;", i.e. just a forward
5246 * declaration! */
774d564b 5247 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5248 newSVOP(OP_CONST, 0, tmpsv),
5249 Nullop,
8990e307 5250 Nullop);
748a9306 5251 LEAVE;
8ebc5c01 5252 if (!GvCVu(gv))
cea2e8a9 5253 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5254 }
8ebc5c01 5255 return GvCVu(gv);
79072805
LW		 5256 }
5257}
5258
c461cf8f
JH		 5259/*
5260=for apidoc sv_true
5261
5262Returns true if the SV has a true value by Perl's rules.
5263
5264=cut
5265*/
5266
79072805 5267I32
864dbfa3 5268Perl_sv_true(pTHX_ register SV *sv)
79072805 5269{
4e35701f 5270 dTHR;
8990e307
LW		 5271 if (!sv)
5272 return 0;
79072805 5273 if (SvPOK(sv)) {
4e35701f
NIS		 5274 register XPV* tXpv;
5275 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5276 (tXpv->xpv_cur > 1 ||
4e35701f 5277 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5278 return 1;
5279 else
5280 return 0;
5281 }
5282 else {
5283 if (SvIOK(sv))
463ee0b2 5284 return SvIVX(sv) != 0;
79072805
LW		 5285 else {
5286 if (SvNOK(sv))
463ee0b2 5287 return SvNVX(sv) != 0.0;
79072805 5288 else
463ee0b2 5289 return sv_2bool(sv);
79072805
LW		 5290 }
5291 }
5292}
79072805 5293
ff68c719 5294IV
864dbfa3 5295Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5296{
25da4f38
IZ		 5297 if (SvIOK(sv)) {
5298 if (SvIsUV(sv))
5299 return (IV)SvUVX(sv);
ff68c719 5300 return SvIVX(sv);
25da4f38 5301 }
ff68c719 5302 return sv_2iv(sv);
85e6fe83 5303}
85e6fe83 5304
ff68c719 5305UV
864dbfa3 5306Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 5307{
25da4f38
IZ		 5308 if (SvIOK(sv)) {
5309 if (SvIsUV(sv))
5310 return SvUVX(sv);
5311 return (UV)SvIVX(sv);
5312 }
ff68c719 5313 return sv_2uv(sv);
5314}
85e6fe83 5315
65202027 5316NV
864dbfa3 5317Perl_sv_nv(pTHX_ register SV *sv)
79072805 5318{
ff68c719 5319 if (SvNOK(sv))
5320 return SvNVX(sv);
5321 return sv_2nv(sv);
79072805 5322}
79072805 5323
79072805 5324char *
864dbfa3 5325Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 5326{
5327 STRLEN n_a;
5328
5329 if (SvPOK(sv))
5330 return SvPVX(sv);
5331
5332 return sv_2pv(sv, &n_a);
5333}
5334
5335char *
864dbfa3 5336Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 5337{
85e6fe83
LW		 5338 if (SvPOK(sv)) {
5339 *lp = SvCUR(sv);
a0d0e21e 5340 return SvPVX(sv);
85e6fe83 5341 }
463ee0b2 5342 return sv_2pv(sv, lp);
79072805 5343}
79072805 5344
c461cf8f
JH		 5345/*
5346=for apidoc sv_pvn_force
5347
5348Get a sensible string out of the SV somehow.
5349
5350=cut
5351*/
5352
a0d0e21e 5353char *
864dbfa3 5354Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 5355{
5356 char *s;
5357
6fc92669
GS		 5358 if (SvTHINKFIRST(sv) && !SvROK(sv))
5359 sv_force_normal(sv);
1c846c1f 5360
a0d0e21e
LW		 5361 if (SvPOK(sv)) {
5362 *lp = SvCUR(sv);
5363 }
5364 else {
748a9306 5365 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6fc92669 5366 dTHR;
cea2e8a9 5367 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 5368 PL_op_name[PL_op->op_type]);
a0d0e21e 5369 }
4633a7c4
LW		 5370 else
5371 s = sv_2pv(sv, lp);
a0d0e21e
LW		 5372 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5373 STRLEN len = *lp;
1c846c1f 5374
a0d0e21e
LW		 5375 if (SvROK(sv))
5376 sv_unref(sv);
5377 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5378 SvGROW(sv, len + 1);
5379 Move(s,SvPVX(sv),len,char);
5380 SvCUR_set(sv, len);
5381 *SvEND(sv) = '\0';
5382 }
5383 if (!SvPOK(sv)) {
5384 SvPOK_on(sv); /* validate pointer */
5385 SvTAINT(sv);
1d7c1841
GS		 5386 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5387 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 5388 }
5389 }
5390 return SvPVX(sv);
5391}
5392
5393char *
7340a771
GS		 5394Perl_sv_pvbyte(pTHX_ SV *sv)
5395{
5396 return sv_pv(sv);
5397}
5398
5399char *
5400Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5401{
5402 return sv_pvn(sv,lp);
5403}
5404
5405char *
5406Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5407{
5408 return sv_pvn_force(sv,lp);
5409}
5410
5411char *
5412Perl_sv_pvutf8(pTHX_ SV *sv)
5413{
560a288e 5414 sv_utf8_upgrade(sv);
7340a771
GS		 5415 return sv_pv(sv);
5416}
5417
5418char *
5419Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5420{
560a288e 5421 sv_utf8_upgrade(sv);
7340a771
GS		 5422 return sv_pvn(sv,lp);
5423}
5424
c461cf8f
JH		 5425/*
5426=for apidoc sv_pvutf8n_force
5427
5428Get a sensible UTF8-encoded string out of the SV somehow. See
5429L</sv_pvn_force>.
5430
5431=cut
5432*/
5433
7340a771
GS		 5434char *
5435Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5436{
560a288e 5437 sv_utf8_upgrade(sv);
7340a771
GS		 5438 return sv_pvn_force(sv,lp);
5439}
5440
c461cf8f
JH		 5441/*
5442=for apidoc sv_reftype
5443
5444Returns a string describing what the SV is a reference to.
5445
5446=cut
5447*/
5448
7340a771 5449char *
864dbfa3 5450Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 5451{
5452 if (ob && SvOBJECT(sv))
5453 return HvNAME(SvSTASH(sv));
5454 else {
5455 switch (SvTYPE(sv)) {
5456 case SVt_NULL:
5457 case SVt_IV:
5458 case SVt_NV:
5459 case SVt_RV:
5460 case SVt_PV:
5461 case SVt_PVIV:
5462 case SVt_PVNV:
5463 case SVt_PVMG:
5464 case SVt_PVBM:
5465 if (SvROK(sv))
5466 return "REF";
5467 else
5468 return "SCALAR";
5469 case SVt_PVLV: return "LVALUE";
5470 case SVt_PVAV: return "ARRAY";
5471 case SVt_PVHV: return "HASH";
5472 case SVt_PVCV: return "CODE";
5473 case SVt_PVGV: return "GLOB";
1d2dff63 5474 case SVt_PVFM: return "FORMAT";
27f9d8f3 5475 case SVt_PVIO: return "IO";
a0d0e21e
LW		 5476 default: return "UNKNOWN";
5477 }
5478 }
5479}
5480
954c1994
GS		 5481/*
5482=for apidoc sv_isobject
5483
5484Returns a boolean indicating whether the SV is an RV pointing to a blessed
5485object. If the SV is not an RV, or if the object is not blessed, then this
5486will return false.
5487
5488=cut
5489*/
5490
463ee0b2 5491int
864dbfa3 5492Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 5493{
68dc0745 5494 if (!sv)
5495 return 0;
5496 if (SvGMAGICAL(sv))
5497 mg_get(sv);
85e6fe83
LW		 5498 if (!SvROK(sv))
5499 return 0;
5500 sv = (SV*)SvRV(sv);
5501 if (!SvOBJECT(sv))
5502 return 0;
5503 return 1;
5504}
5505
954c1994
GS		 5506/*
5507=for apidoc sv_isa
5508
5509Returns a boolean indicating whether the SV is blessed into the specified
5510class. This does not check for subtypes; use C<sv_derived_from> to verify
5511an inheritance relationship.
5512
5513=cut
5514*/
5515
85e6fe83 5516int
864dbfa3 5517Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 5518{
68dc0745 5519 if (!sv)
5520 return 0;
5521 if (SvGMAGICAL(sv))
5522 mg_get(sv);
ed6116ce 5523 if (!SvROK(sv))
463ee0b2 5524 return 0;
ed6116ce
LW		 5525 sv = (SV*)SvRV(sv);
5526 if (!SvOBJECT(sv))
463ee0b2
LW		 5527 return 0;
5528
5529 return strEQ(HvNAME(SvSTASH(sv)), name);
5530}
5531
954c1994
GS		 5532/*
5533=for apidoc newSVrv
5534
5535Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5536it will be upgraded to one. If C<classname> is non-null then the new SV will
5537be blessed in the specified package. The new SV is returned and its
5538reference count is 1.
5539
5540=cut
5541*/
5542
463ee0b2 5543SV*
864dbfa3 5544Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 5545{
11343788 5546 dTHR;
463ee0b2
LW		 5547 SV *sv;
5548
4561caa4 5549 new_SV(sv);
51cf62d8 5550
2213622d 5551 SV_CHECK_THINKFIRST(rv);
51cf62d8 5552 SvAMAGIC_off(rv);
51cf62d8 5553
0199fce9
JD		 5554 if (SvTYPE(rv) >= SVt_PVMG) {
5555 U32 refcnt = SvREFCNT(rv);
5556 SvREFCNT(rv) = 0;
5557 sv_clear(rv);
5558 SvFLAGS(rv) = 0;
5559 SvREFCNT(rv) = refcnt;
5560 }
5561
51cf62d8 5562 if (SvTYPE(rv) < SVt_RV)
0199fce9
JD		 5563 sv_upgrade(rv, SVt_RV);
5564 else if (SvTYPE(rv) > SVt_RV) {
5565 (void)SvOOK_off(rv);
5566 if (SvPVX(rv) && SvLEN(rv))
5567 Safefree(SvPVX(rv));
5568 SvCUR_set(rv, 0);
5569 SvLEN_set(rv, 0);
5570 }
51cf62d8
OT		 5571
5572 (void)SvOK_off(rv);
053fc874 5573 SvRV(rv) = sv;
ed6116ce 5574 SvROK_on(rv);
463ee0b2 5575
a0d0e21e
LW		 5576 if (classname) {
5577 HV* stash = gv_stashpv(classname, TRUE);
5578 (void)sv_bless(rv, stash);
5579 }
5580 return sv;
5581}
5582
954c1994
GS		 5583/*
5584=for apidoc sv_setref_pv
5585
5586Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5587argument will be upgraded to an RV. That RV will be modified to point to
5588the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5589into the SV. The C<classname> argument indicates the package for the
5590blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5591will be returned and will have a reference count of 1.
5592
5593Do not use with other Perl types such as HV, AV, SV, CV, because those
5594objects will become corrupted by the pointer copy process.
5595
5596Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5597
5598=cut
5599*/
5600
a0d0e21e 5601SV*
864dbfa3 5602Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 5603{
189b2af5 5604 if (!pv) {
3280af22 5605 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 5606 SvSETMAGIC(rv);
5607 }
a0d0e21e 5608 else
56431972 5609 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 5610 return rv;
5611}
5612
954c1994
GS		 5613/*
5614=for apidoc sv_setref_iv
5615
5616Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5617argument will be upgraded to an RV. That RV will be modified to point to
5618the new SV. The C<classname> argument indicates the package for the
5619blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5620will be returned and will have a reference count of 1.
5621
5622=cut
5623*/
5624
a0d0e21e 5625SV*
864dbfa3 5626Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 5627{
5628 sv_setiv(newSVrv(rv,classname), iv);
5629 return rv;
5630}
5631
954c1994
GS		 5632/*
5633=for apidoc sv_setref_nv
5634
5635Copies a double into a new SV, optionally blessing the SV. The C<rv>
5636argument will be upgraded to an RV. That RV will be modified to point to
5637the new SV. The C<classname> argument indicates the package for the
5638blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5639will be returned and will have a reference count of 1.
5640
5641=cut
5642*/
5643
a0d0e21e 5644SV*
65202027 5645Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 5646{
5647 sv_setnv(newSVrv(rv,classname), nv);
5648 return rv;
5649}
463ee0b2 5650
954c1994
GS		 5651/*
5652=for apidoc sv_setref_pvn
5653
5654Copies a string into a new SV, optionally blessing the SV. The length of the
5655string must be specified with C<n>. The C<rv> argument will be upgraded to
5656an RV. That RV will be modified to point to the new SV. The C<classname>
5657argument indicates the package for the blessing. Set C<classname> to
5658C<Nullch> to avoid the blessing. The new SV will be returned and will have
5659a reference count of 1.
5660
5661Note that C<sv_setref_pv> copies the pointer while this copies the string.
5662
5663=cut
5664*/
5665
a0d0e21e 5666SV*
864dbfa3 5667Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 5668{
5669 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 5670 return rv;
5671}
5672
954c1994
GS		 5673/*
5674=for apidoc sv_bless
5675
5676Blesses an SV into a specified package. The SV must be an RV. The package
5677must be designated by its stash (see C<gv_stashpv()>). The reference count
5678of the SV is unaffected.
5679
5680=cut
5681*/
5682
a0d0e21e 5683SV*
864dbfa3 5684Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 5685{
11343788 5686 dTHR;
76e3520e 5687 SV *tmpRef;
a0d0e21e 5688 if (!SvROK(sv))
cea2e8a9 5689 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 5690 tmpRef = SvRV(sv);
5691 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5692 if (SvREADONLY(tmpRef))
cea2e8a9 5693 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 5694 if (SvOBJECT(tmpRef)) {
5695 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5696 --PL_sv_objcount;
76e3520e 5697 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 5698 }
a0d0e21e 5699 }
76e3520e
GS		 5700 SvOBJECT_on(tmpRef);
5701 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5702 ++PL_sv_objcount;
76e3520e
GS		 5703 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5704 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 5705
2e3febc6
CS		 5706 if (Gv_AMG(stash))
5707 SvAMAGIC_on(sv);
5708 else
5709 SvAMAGIC_off(sv);
a0d0e21e
LW		 5710
5711 return sv;
5712}
5713
76e3520e 5714STATIC void
cea2e8a9 5715S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 5716{
850fabdf
GS		 5717 void *xpvmg;
5718
a0d0e21e
LW		 5719 assert(SvTYPE(sv) == SVt_PVGV);
5720 SvFAKE_off(sv);
5721 if (GvGP(sv))
1edc1566 5722 gp_free((GV*)sv);
e826b3c7
GS		 5723 if (GvSTASH(sv)) {
5724 SvREFCNT_dec(GvSTASH(sv));
5725 GvSTASH(sv) = Nullhv;
5726 }
a0d0e21e
LW		 5727 sv_unmagic(sv, '*');
5728 Safefree(GvNAME(sv));
a5f75d66 5729 GvMULTI_off(sv);
850fabdf
GS		 5730
5731 /* need to keep SvANY(sv) in the right arena */
5732 xpvmg = new_XPVMG();
5733 StructCopy(SvANY(sv), xpvmg, XPVMG);
5734 del_XPVGV(SvANY(sv));
5735 SvANY(sv) = xpvmg;
5736
a0d0e21e
LW		 5737 SvFLAGS(sv) &= ~SVTYPEMASK;
5738 SvFLAGS(sv) |= SVt_PVMG;
5739}
5740
954c1994
GS		 5741/*
5742=for apidoc sv_unref
5743
5744Unsets the RV status of the SV, and decrements the reference count of
5745whatever was being referenced by the RV. This can almost be thought of
5746as a reversal of C<newSVrv>. See C<SvROK_off>.
5747
5748=cut
5749*/
5750
ed6116ce 5751void
864dbfa3 5752Perl_sv_unref(pTHX_ SV *sv)
ed6116ce 5753{
a0d0e21e 5754 SV* rv = SvRV(sv);
810b8aa5
GS		 5755
5756 if (SvWEAKREF(sv)) {
5757 sv_del_backref(sv);
5758 SvWEAKREF_off(sv);
5759 SvRV(sv) = 0;
5760 return;
5761 }
ed6116ce
LW		 5762 SvRV(sv) = 0;
5763 SvROK_off(sv);
4633a7c4
LW		 5764 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5765 SvREFCNT_dec(rv);
8e07c86e 5766 else
4633a7c4 5767 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 5768}
8990e307 5769
bbce6d69 5770void
864dbfa3 5771Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 5772{
5773 sv_magic((sv), Nullsv, 't', Nullch, 0);
5774}
5775
5776void
864dbfa3 5777Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 5778{
13f57bf8 5779 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5780 MAGIC *mg = mg_find(sv, 't');
5781 if (mg)
565764a8 5782 mg->mg_len &= ~1;
36477c24 5783 }
bbce6d69 5784}
5785
5786bool
864dbfa3 5787Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 5788{
13f57bf8 5789 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5790 MAGIC *mg = mg_find(sv, 't');
155aba94 5791 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 5792 return TRUE;
5793 }
5794 return FALSE;
bbce6d69 5795}
5796
954c1994
GS		 5797/*
5798=for apidoc sv_setpviv
5799
5800Copies an integer into the given SV, also updating its string value.
5801Does not handle 'set' magic. See C<sv_setpviv_mg>.
5802
5803=cut
5804*/
5805
84902520 5806void
864dbfa3 5807Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 5808{
25da4f38
IZ		 5809 char buf[TYPE_CHARS(UV)];
5810 char *ebuf;
5811 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 5812
25da4f38 5813 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 5814}
5815
ef50df4b 5816
954c1994
GS		 5817/*
5818=for apidoc sv_setpviv_mg
5819
5820Like C<sv_setpviv>, but also handles 'set' magic.
5821
5822=cut
5823*/
5824
ef50df4b 5825void
864dbfa3 5826Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 5827{
25da4f38
IZ		 5828 char buf[TYPE_CHARS(UV)];
5829 char *ebuf;
5830 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5831
5832 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 5833 SvSETMAGIC(sv);
5834}
5835
cea2e8a9
GS		 5836#if defined(PERL_IMPLICIT_CONTEXT)
5837void
5838Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5839{
5840 dTHX;
5841 va_list args;
5842 va_start(args, pat);
c5be433b 5843 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 5844 va_end(args);
5845}
5846
5847
5848void
5849Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5850{
5851 dTHX;
5852 va_list args;
5853 va_start(args, pat);
c5be433b 5854 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 5855 va_end(args);
cea2e8a9
GS		 5856}
5857#endif
5858
954c1994
GS		 5859/*
5860=for apidoc sv_setpvf
5861
5862Processes its arguments like C<sprintf> and sets an SV to the formatted
5863output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5864
5865=cut
5866*/
5867
46fc3d4c 5868void
864dbfa3 5869Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5870{
5871 va_list args;
46fc3d4c 5872 va_start(args, pat);
c5be433b 5873 sv_vsetpvf(sv, pat, &args);
46fc3d4c 5874 va_end(args);
5875}
5876
c5be433b
GS		 5877void
5878Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5879{
5880 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5881}
ef50df4b 5882
954c1994
GS		 5883/*
5884=for apidoc sv_setpvf_mg
5885
5886Like C<sv_setpvf>, but also handles 'set' magic.
5887
5888=cut
5889*/
5890
ef50df4b 5891void
864dbfa3 5892Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5893{
5894 va_list args;
ef50df4b 5895 va_start(args, pat);
c5be433b 5896 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 5897 va_end(args);
c5be433b
GS		 5898}
5899
5900void
5901Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5902{
5903 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5904 SvSETMAGIC(sv);
5905}
5906
cea2e8a9
GS		 5907#if defined(PERL_IMPLICIT_CONTEXT)
5908void
5909Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5910{
5911 dTHX;
5912 va_list args;
5913 va_start(args, pat);
c5be433b 5914 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 5915 va_end(args);
5916}
5917
5918void
5919Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5920{
5921 dTHX;
5922 va_list args;
5923 va_start(args, pat);
c5be433b 5924 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 5925 va_end(args);
cea2e8a9
GS		 5926}
5927#endif
5928
954c1994
GS		 5929/*
5930=for apidoc sv_catpvf
5931
5932Processes its arguments like C<sprintf> and appends the formatted output
5933to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5934typically be called after calling this function to handle 'set' magic.
5935
5936=cut
5937*/
5938
46fc3d4c 5939void
864dbfa3 5940Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5941{
5942 va_list args;
46fc3d4c 5943 va_start(args, pat);
c5be433b 5944 sv_vcatpvf(sv, pat, &args);
46fc3d4c 5945 va_end(args);
5946}
5947
ef50df4b 5948void
c5be433b
GS		 5949Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5950{
5951 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5952}
5953
954c1994
GS		 5954/*
5955=for apidoc sv_catpvf_mg
5956
5957Like C<sv_catpvf>, but also handles 'set' magic.
5958
5959=cut
5960*/
5961
c5be433b 5962void
864dbfa3 5963Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5964{
5965 va_list args;
ef50df4b 5966 va_start(args, pat);
c5be433b 5967 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 5968 va_end(args);
c5be433b
GS		 5969}
5970
5971void
5972Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5973{
5974 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5975 SvSETMAGIC(sv);
5976}
5977
954c1994
GS		 5978/*
5979=for apidoc sv_vsetpvfn
5980
5981Works like C<vcatpvfn> but copies the text into the SV instead of
5982appending it.
5983
5984=cut
5985*/
5986
46fc3d4c 5987void
7d5ea4e7 5988Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5989{
5990 sv_setpvn(sv, "", 0);
7d5ea4e7 5991 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 5992}
5993
954c1994
GS		 5994/*
5995=for apidoc sv_vcatpvfn
5996
5997Processes its arguments like C<vsprintf> and appends the formatted output
5998to an SV. Uses an array of SVs if the C style variable argument list is
5999missing (NULL). When running with taint checks enabled, indicates via
6000C<maybe_tainted> if results are untrustworthy (often due to the use of
6001locales).
6002
6003=cut
6004*/
6005
46fc3d4c 6006void
7d5ea4e7 6007Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 6008{
e858de61 6009 dTHR;
46fc3d4c 6010 char *p;
6011 char *q;
6012 char *patend;
fc36a67e 6013 STRLEN origlen;
46fc3d4c 6014 I32 svix = 0;
c635e13b 6015 static char nullstr[] = "(null)";
7e2040f0 6016 SV *argsv;
46fc3d4c 6017
6018 /* no matter what, this is a string now */
fc36a67e 6019 (void)SvPV_force(sv, origlen);
46fc3d4c 6020
fc36a67e 6021 /* special-case "", "%s", and "%_" */
46fc3d4c 6022 if (patlen == 0)
6023 return;
fc36a67e 6024 if (patlen == 2 && pat[0] == '%') {
6025 switch (pat[1]) {
6026 case 's':
c635e13b 6027 if (args) {
6028 char *s = va_arg(*args, char*);
6029 sv_catpv(sv, s ? s : nullstr);
6030 }
7e2040f0 6031 else if (svix < svmax) {
fc36a67e 6032 sv_catsv(sv, *svargs);
7e2040f0
GS		 6033 if (DO_UTF8(*svargs))
6034 SvUTF8_on(sv);
6035 }
fc36a67e 6036 return;
6037 case '_':
6038 if (args) {
7e2040f0
GS		 6039 argsv = va_arg(*args, SV*);
6040 sv_catsv(sv, argsv);
6041 if (DO_UTF8(argsv))
6042 SvUTF8_on(sv);
fc36a67e 6043 return;
6044 }
6045 /* See comment on '_' below */
6046 break;
6047 }
46fc3d4c 6048 }
6049
6050 patend = (char*)pat + patlen;
6051 for (p = (char*)pat; p < patend; p = q) {
6052 bool alt = FALSE;
6053 bool left = FALSE;
b22c7a20
GS		 6054 bool vectorize = FALSE;
6055 bool utf = FALSE;
46fc3d4c 6056 char fill = ' ';
6057 char plus = 0;
6058 char intsize = 0;
6059 STRLEN width = 0;
fc36a67e 6060 STRLEN zeros = 0;
46fc3d4c 6061 bool has_precis = FALSE;
6062 STRLEN precis = 0;
7e2040f0 6063 bool is_utf = FALSE;
eb3fce90 6064
46fc3d4c 6065 char esignbuf[4];
806e7201 6066 U8 utf8buf[UTF8_MAXLEN];
46fc3d4c 6067 STRLEN esignlen = 0;
6068
6069 char *eptr = Nullch;
fc36a67e 6070 STRLEN elen = 0;
089c015b
JH		 6071 /* Times 4: a decimal digit takes more than 3 binary digits.
6072 * NV_DIG: mantissa takes than many decimal digits.
6073 * Plus 32: Playing safe. */
6074 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6075 /* large enough for "%#.#f" --chip */
6076 /* what about long double NVs? --jhi */
b22c7a20
GS		 6077
6078 SV *vecsv;
a05b299f 6079 U8 *vecstr = Null(U8*);
b22c7a20 6080 STRLEN veclen = 0;
46fc3d4c 6081 char c;
6082 int i;
6083 unsigned base;
6084 IV iv;
6085 UV uv;
65202027 6086 NV nv;
46fc3d4c 6087 STRLEN have;
6088 STRLEN need;
6089 STRLEN gap;
b22c7a20
GS		 6090 char *dotstr = ".";
6091 STRLEN dotstrlen = 1;
eb3fce90
JH		 6092 I32 epix = 0; /* explicit parameter index */
6093 I32 ewix = 0; /* explicit width index */
6094 bool asterisk = FALSE;
46fc3d4c 6095
6096 for (q = p; q < patend && *q != '%'; ++q) ;
6097 if (q > p) {
6098 sv_catpvn(sv, p, q - p);
6099 p = q;
6100 }
6101 if (q++ >= patend)
6102 break;
6103
fc36a67e 6104 /* FLAGS */
6105
46fc3d4c 6106 while (*q) {
6107 switch (*q) {
6108 case ' ':
6109 case '+':
6110 plus = *q++;
6111 continue;
6112
6113 case '-':
6114 left = TRUE;
6115 q++;
6116 continue;
6117
6118 case '0':
6119 fill = *q++;
6120 continue;
6121
6122 case '#':
6123 alt = TRUE;
6124 q++;
6125 continue;
6126
b22c7a20
GS		 6127 case '*': /* printf("%*vX",":",$ipv6addr) */
6128 if (q[1] != 'v')
6129 break;
6130 q++;
6131 if (args)
6132 vecsv = va_arg(*args, SV*);
6133 else if (svix < svmax)
6134 vecsv = svargs[svix++];
9c3dd3fe
GS		 6135 else
6136 continue;
b22c7a20
GS		 6137 dotstr = SvPVx(vecsv,dotstrlen);
6138 if (DO_UTF8(vecsv))
6139 is_utf = TRUE;
6140 /* FALL THROUGH */
6141
6142 case 'v':
6143 vectorize = TRUE;
6144 q++;
b22c7a20
GS		 6145 continue;
6146
fc36a67e 6147 default:
6148 break;
6149 }
6150 break;
6151 }
46fc3d4c 6152
fc36a67e 6153 /* WIDTH */
6154
eb3fce90
JH		 6155 scanwidth:
6156
6157 if (*q == '*') {
6158 if (asterisk)
6159 goto unknown;
6160 asterisk = TRUE;
6161 q++;
6162 }
6163
fc36a67e 6164 switch (*q) {
6165 case '1': case '2': case '3':
6166 case '4': case '5': case '6':
6167 case '7': case '8': case '9':
6168 width = 0;
6169 while (isDIGIT(*q))
6170 width = width * 10 + (*q++ - '0');
eb3fce90
JH		 6171 if (*q == '$') {
6172 if (asterisk && ewix == 0) {
6173 ewix = width;
6174 width = 0;
6175 q++;
6176 goto scanwidth;
6177 } else if (epix == 0) {
6178 epix = width;
6179 width = 0;
6180 q++;
6181 goto scanwidth;
6182 } else
6183 goto unknown;
6184 }
6185 }
fc36a67e 6186
eb3fce90 6187 if (asterisk) {
fc36a67e 6188 if (args)
6189 i = va_arg(*args, int);
6190 else
eb3fce90
JH		 6191 i = (ewix ? ewix <= svmax : svix < svmax) ?
6192 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6193 left |= (i < 0);
6194 width = (i < 0) ? -i : i;
fc36a67e 6195 }
6196
6197 /* PRECISION */
46fc3d4c 6198
fc36a67e 6199 if (*q == '.') {
6200 q++;
6201 if (*q == '*') {
46fc3d4c 6202 if (args)
6203 i = va_arg(*args, int);
6204 else
eb3fce90
JH		 6205 i = (ewix ? ewix <= svmax : svix < svmax)
6206 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6207 precis = (i < 0) ? 0 : i;
46fc3d4c 6208 q++;
fc36a67e 6209 }
6210 else {
6211 precis = 0;
6212 while (isDIGIT(*q))
6213 precis = precis * 10 + (*q++ - '0');
6214 }
6215 has_precis = TRUE;
6216 }
46fc3d4c 6217
bb2899ba
GS		 6218 if (vectorize) {
6219 if (args) {
6220 vecsv = va_arg(*args, SV*);
6221 vecstr = (U8*)SvPVx(vecsv,veclen);
6222 utf = DO_UTF8(vecsv);
6223 }
eb3fce90
JH		 6224 else if (epix ? epix <= svmax : svix < svmax) {
6225 vecsv = svargs[epix ? epix-1 : svix++];
bb2899ba
GS		 6226 vecstr = (U8*)SvPVx(vecsv,veclen);
6227 utf = DO_UTF8(vecsv);
6228 }
6229 else {
6230 vecstr = (U8*)"";
6231 veclen = 0;
6232 }
6233 }
6234
fc36a67e 6235 /* SIZE */
46fc3d4c 6236
fc36a67e 6237 switch (*q) {
e5c81feb 6238#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6f9bb7fd 6239 case 'L': /* Ld */
e5c81feb
JH		 6240 /* FALL THROUGH */
6241#endif
6242#ifdef HAS_QUAD
6f9bb7fd
GS		 6243 case 'q': /* qd */
6244 intsize = 'q';
6245 q++;
6246 break;
6247#endif
fc36a67e 6248 case 'l':
e5c81feb
JH		 6249#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6250 if (*(q + 1) == 'l') { /* lld, llf */
fc36a67e 6251 intsize = 'q';
6252 q += 2;
46fc3d4c 6253 break;
cf2093f6 6254 }
fc36a67e 6255#endif
6f9bb7fd 6256 /* FALL THROUGH */
fc36a67e 6257 case 'h':
cf2093f6 6258 /* FALL THROUGH */
fc36a67e 6259 case 'V':
6260 intsize = *q++;
46fc3d4c 6261 break;
6262 }
6263
fc36a67e 6264 /* CONVERSION */
6265
46fc3d4c 6266 switch (c = *q++) {
6267
6268 /* STRINGS */
6269
6270 case '%':
6271 eptr = q - 1;
6272 elen = 1;
6273 goto string;
6274
6275 case 'c':
7e2040f0
GS		 6276 if (args)
6277 uv = va_arg(*args, int);
6278 else
eb3fce90
JH		 6279 uv = (epix ? epix <= svmax : svix < svmax) ?
6280 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
3969a896 6281 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 6282 eptr = (char*)utf8buf;
6283 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 6284 is_utf = TRUE;
6285 }
6286 else {
6287 c = (char)uv;
6288 eptr = &c;
6289 elen = 1;
a0ed51b3 6290 }
46fc3d4c 6291 goto string;
6292
46fc3d4c 6293 case 's':
6294 if (args) {
fc36a67e 6295 eptr = va_arg(*args, char*);
c635e13b 6296 if (eptr)
1d7c1841
GS		 6297#ifdef MACOS_TRADITIONAL
6298 /* On MacOS, %#s format is used for Pascal strings */
6299 if (alt)
6300 elen = *eptr++;
6301 else
6302#endif
c635e13b 6303 elen = strlen(eptr);
6304 else {
6305 eptr = nullstr;
6306 elen = sizeof nullstr - 1;
6307 }
46fc3d4c 6308 }
eb3fce90
JH		 6309 else if (epix ? epix <= svmax : svix < svmax) {
6310 argsv = svargs[epix ? epix-1 : svix++];
7e2040f0
GS		 6311 eptr = SvPVx(argsv, elen);
6312 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 6313 if (has_precis && precis < elen) {
6314 I32 p = precis;
7e2040f0 6315 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 6316 precis = p;
6317 }
6318 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 6319 width += elen - sv_len_utf8(argsv);
a0ed51b3 6320 }
7e2040f0 6321 is_utf = TRUE;
a0ed51b3
LW		 6322 }
6323 }
46fc3d4c 6324 goto string;
6325
fc36a67e 6326 case '_':
6327 /*
6328 * The "%_" hack might have to be changed someday,
6329 * if ISO or ANSI decide to use '_' for something.
6330 * So we keep it hidden from users' code.
6331 */
6332 if (!args)
6333 goto unknown;
7e2040f0
GS		 6334 argsv = va_arg(*args,SV*);
6335 eptr = SvPVx(argsv, elen);
6336 if (DO_UTF8(argsv))
6337 is_utf = TRUE;
fc36a67e 6338
46fc3d4c 6339 string:
b22c7a20 6340 vectorize = FALSE;
46fc3d4c 6341 if (has_precis && elen > precis)
6342 elen = precis;
6343 break;
6344
6345 /* INTEGERS */
6346
fc36a67e 6347 case 'p':
c2e66d9e
GS		 6348 if (alt)
6349 goto unknown;
fc36a67e 6350 if (args)
56431972 6351 uv = PTR2UV(va_arg(*args, void*));
fc36a67e 6352 else
eb3fce90
JH		 6353 uv = (epix ? epix <= svmax : svix < svmax) ?
6354 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
fc36a67e 6355 base = 16;
6356 goto integer;
6357
46fc3d4c 6358 case 'D':
29fe7a80 6359#ifdef IV_IS_QUAD
22f3ae8c 6360 intsize = 'q';
29fe7a80 6361#else
46fc3d4c 6362 intsize = 'l';
29fe7a80 6363#endif
46fc3d4c 6364 /* FALL THROUGH */
6365 case 'd':
6366 case 'i':
b22c7a20 6367 if (vectorize) {
ba210ebe 6368 STRLEN ulen;
b22c7a20
GS		 6369 if (!veclen) {
6370 vectorize = FALSE;
6371 break;
6372 }
6373 if (utf)
dcad2880 6374 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 6375 else {
a05b299f 6376 iv = *vecstr;
b22c7a20
GS		 6377 ulen = 1;
6378 }
6379 vecstr += ulen;
6380 veclen -= ulen;
6381 }
6382 else if (args) {
46fc3d4c 6383 switch (intsize) {
6384 case 'h': iv = (short)va_arg(*args, int); break;
6385 default: iv = va_arg(*args, int); break;
6386 case 'l': iv = va_arg(*args, long); break;
fc36a67e 6387 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 6388#ifdef HAS_QUAD
6389 case 'q': iv = va_arg(*args, Quad_t); break;
6390#endif
46fc3d4c 6391 }
6392 }
6393 else {
eb3fce90
JH		 6394 iv = (epix ? epix <= svmax : svix < svmax) ?
6395 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
46fc3d4c 6396 switch (intsize) {
6397 case 'h': iv = (short)iv; break;
be28567c 6398 default: break;
46fc3d4c 6399 case 'l': iv = (long)iv; break;
fc36a67e 6400 case 'V': break;
cf2093f6
JH		 6401#ifdef HAS_QUAD
6402 case 'q': iv = (Quad_t)iv; break;
6403#endif
46fc3d4c 6404 }
6405 }
6406 if (iv >= 0) {
6407 uv = iv;
6408 if (plus)
6409 esignbuf[esignlen++] = plus;
6410 }
6411 else {
6412 uv = -iv;
6413 esignbuf[esignlen++] = '-';
6414 }
6415 base = 10;
6416 goto integer;
6417
fc36a67e 6418 case 'U':
29fe7a80 6419#ifdef IV_IS_QUAD
22f3ae8c 6420 intsize = 'q';
29fe7a80 6421#else
fc36a67e 6422 intsize = 'l';
29fe7a80 6423#endif
fc36a67e 6424 /* FALL THROUGH */
6425 case 'u':
6426 base = 10;
6427 goto uns_integer;
6428
4f19785b
WSI		 6429 case 'b':
6430 base = 2;
6431 goto uns_integer;
6432
46fc3d4c 6433 case 'O':
29fe7a80 6434#ifdef IV_IS_QUAD
22f3ae8c 6435 intsize = 'q';
29fe7a80 6436#else
46fc3d4c 6437 intsize = 'l';
29fe7a80 6438#endif
46fc3d4c 6439 /* FALL THROUGH */
6440 case 'o':
6441 base = 8;
6442 goto uns_integer;
6443
6444 case 'X':
46fc3d4c 6445 case 'x':
6446 base = 16;
46fc3d4c 6447
6448 uns_integer:
b22c7a20 6449 if (vectorize) {
ba210ebe 6450 STRLEN ulen;
b22c7a20
GS		 6451 vector:
6452 if (!veclen) {
6453 vectorize = FALSE;
6454 break;
6455 }
6456 if (utf)
dcad2880 6457 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 6458 else {
a05b299f 6459 uv = *vecstr;
b22c7a20
GS		 6460 ulen = 1;
6461 }
6462 vecstr += ulen;
6463 veclen -= ulen;
6464 }
6465 else if (args) {
46fc3d4c 6466 switch (intsize) {
6467 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6468 default: uv = va_arg(*args, unsigned); break;
6469 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 6470 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 6471#ifdef HAS_QUAD
6472 case 'q': uv = va_arg(*args, Quad_t); break;
6473#endif
46fc3d4c 6474 }
6475 }
6476 else {
eb3fce90
JH		 6477 uv = (epix ? epix <= svmax : svix < svmax) ?
6478 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
46fc3d4c 6479 switch (intsize) {
6480 case 'h': uv = (unsigned short)uv; break;
be28567c 6481 default: break;
46fc3d4c 6482 case 'l': uv = (unsigned long)uv; break;
fc36a67e 6483 case 'V': break;
cf2093f6
JH		 6484#ifdef HAS_QUAD
6485 case 'q': uv = (Quad_t)uv; break;
6486#endif
46fc3d4c 6487 }
6488 }
6489
6490 integer:
46fc3d4c 6491 eptr = ebuf + sizeof ebuf;
fc36a67e 6492 switch (base) {
6493 unsigned dig;
6494 case 16:
c10ed8b9
HS		 6495 if (!uv)
6496 alt = FALSE;
1d7c1841
GS		 6497 p = (char*)((c == 'X')
6498 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 6499 do {
6500 dig = uv & 15;
6501 *--eptr = p[dig];
6502 } while (uv >>= 4);
6503 if (alt) {
46fc3d4c 6504 esignbuf[esignlen++] = '0';
fc36a67e 6505 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 6506 }
fc36a67e 6507 break;
6508 case 8:
6509 do {
6510 dig = uv & 7;
6511 *--eptr = '0' + dig;
6512 } while (uv >>= 3);
6513 if (alt && *eptr != '0')
6514 *--eptr = '0';
6515 break;
4f19785b
WSI		 6516 case 2:
6517 do {
6518 dig = uv & 1;
6519 *--eptr = '0' + dig;
6520 } while (uv >>= 1);
eda88b6d
JH		 6521 if (alt) {
6522 esignbuf[esignlen++] = '0';
7481bb52 6523 esignbuf[esignlen++] = 'b';
eda88b6d 6524 }
4f19785b 6525 break;
fc36a67e 6526 default: /* it had better be ten or less */
6bc102ca 6527#if defined(PERL_Y2KWARN)
e476b1b5 6528 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 6529 STRLEN n;
6530 char *s = SvPV(sv,n);
6531 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6532 && (n == 2 || !isDIGIT(s[n-3])))
6533 {
e476b1b5 6534 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 6535 "Possible Y2K bug: %%%c %s",
6536 c, "format string following '19'");
6537 }
6538 }
6539#endif
fc36a67e 6540 do {
6541 dig = uv % base;
6542 *--eptr = '0' + dig;
6543 } while (uv /= base);
6544 break;
46fc3d4c 6545 }
6546 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 6547 if (has_precis) {
6548 if (precis > elen)
6549 zeros = precis - elen;
6550 else if (precis == 0 && elen == 1 && *eptr == '0')
6551 elen = 0;
6552 }
46fc3d4c 6553 break;
6554
6555 /* FLOATING POINT */
6556
fc36a67e 6557 case 'F':
6558 c = 'f'; /* maybe %F isn't supported here */
6559 /* FALL THROUGH */
46fc3d4c 6560 case 'e': case 'E':
fc36a67e 6561 case 'f':
46fc3d4c 6562 case 'g': case 'G':
6563
6564 /* This is evil, but floating point is even more evil */
6565
b22c7a20 6566 vectorize = FALSE;
fc36a67e 6567 if (args)
65202027 6568 nv = va_arg(*args, NV);
fc36a67e 6569 else
eb3fce90
JH		 6570 nv = (epix ? epix <= svmax : svix < svmax) ?
6571 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
fc36a67e 6572
6573 need = 0;
6574 if (c != 'e' && c != 'E') {
6575 i = PERL_INT_MIN;
73b309ea 6576 (void)Perl_frexp(nv, &i);
fc36a67e 6577 if (i == PERL_INT_MIN)
cea2e8a9 6578 Perl_die(aTHX_ "panic: frexp");
c635e13b 6579 if (i > 0)
fc36a67e 6580 need = BIT_DIGITS(i);
6581 }
6582 need += has_precis ? precis : 6; /* known default */
6583 if (need < width)
6584 need = width;
6585
46fc3d4c 6586 need += 20; /* fudge factor */
80252599
GS		 6587 if (PL_efloatsize < need) {
6588 Safefree(PL_efloatbuf);
6589 PL_efloatsize = need + 20; /* more fudge */
6590 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 6591 PL_efloatbuf[0] = '\0';
46fc3d4c 6592 }
6593
6594 eptr = ebuf + sizeof ebuf;
6595 *--eptr = '\0';
6596 *--eptr = c;
e5c81feb 6597#if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
cf2093f6 6598 {
e5c81feb
JH		 6599 /* Copy the one or more characters in a long double
6600 * format before the 'base' ([efgEFG]) character to
6601 * the format string. */
6602 static char const prifldbl[] = PERL_PRIfldbl;
6603 char const *p = prifldbl + sizeof(prifldbl) - 3;
6604 while (p >= prifldbl) { *--eptr = *p--; }
cf2093f6 6605 }
65202027 6606#endif
46fc3d4c 6607 if (has_precis) {
6608 base = precis;
6609 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6610 *--eptr = '.';
6611 }
6612 if (width) {
6613 base = width;
6614 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6615 }
6616 if (fill == '0')
6617 *--eptr = fill;
84902520
TB		 6618 if (left)
6619 *--eptr = '-';
46fc3d4c 6620 if (plus)
6621 *--eptr = plus;
6622 if (alt)
6623 *--eptr = '#';
6624 *--eptr = '%';
6625
bda0f7a5
JH		 6626 /* No taint. Otherwise we are in the strange
6627 * situaiton where printf() taints but print($float) doesn't.
6628 * --jhi */
dd8482fc 6629 (void)sprintf(PL_efloatbuf, eptr, nv);
8af02333 6630
80252599
GS		 6631 eptr = PL_efloatbuf;
6632 elen = strlen(PL_efloatbuf);
46fc3d4c 6633 break;
6634
fc36a67e 6635 /* SPECIAL */
6636
6637 case 'n':
b22c7a20 6638 vectorize = FALSE;
fc36a67e 6639 i = SvCUR(sv) - origlen;
6640 if (args) {
c635e13b 6641 switch (intsize) {
6642 case 'h': *(va_arg(*args, short*)) = i; break;
6643 default: *(va_arg(*args, int*)) = i; break;
6644 case 'l': *(va_arg(*args, long*)) = i; break;
6645 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 6646#ifdef HAS_QUAD
6647 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6648#endif
c635e13b 6649 }
fc36a67e 6650 }
eb3fce90
JH		 6651 else if (epix ? epix <= svmax : svix < svmax)
6652 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
fc36a67e 6653 continue; /* not "break" */
6654
6655 /* UNKNOWN */
6656
46fc3d4c 6657 default:
fc36a67e 6658 unknown:
b22c7a20 6659 vectorize = FALSE;
599cee73 6660 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 6661 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 6662 SV *msg = sv_newmortal();
cea2e8a9 6663 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 6664 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 6665 if (c) {
0f4b6630 6666 if (isPRINT(c))
1c846c1f 6667 Perl_sv_catpvf(aTHX_ msg,
0f4b6630
JH		 6668 "\"%%%c\"", c & 0xFF);
6669 else
6670 Perl_sv_catpvf(aTHX_ msg,
57def98f 6671 "\"%%\\%03"UVof"\"",
0f4b6630 6672 (UV)c & 0xFF);
0f4b6630 6673 } else
c635e13b 6674 sv_catpv(msg, "end of string");
894356b3 6675 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 6676 }
fb73857a 6677
6678 /* output mangled stuff ... */
6679 if (c == '\0')
6680 --q;
46fc3d4c 6681 eptr = p;
6682 elen = q - p;
fb73857a 6683
6684 /* ... right here, because formatting flags should not apply */
6685 SvGROW(sv, SvCUR(sv) + elen + 1);
6686 p = SvEND(sv);
6687 memcpy(p, eptr, elen);
6688 p += elen;
6689 *p = '\0';
6690 SvCUR(sv) = p - SvPVX(sv);
6691 continue; /* not "break" */
46fc3d4c 6692 }
6693
fc36a67e 6694 have = esignlen + zeros + elen;
46fc3d4c 6695 need = (have > width ? have : width);
6696 gap = need - have;
6697
b22c7a20 6698 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 6699 p = SvEND(sv);
6700 if (esignlen && fill == '0') {
6701 for (i = 0; i < esignlen; i++)
6702 *p++ = esignbuf[i];
6703 }
6704 if (gap && !left) {
6705 memset(p, fill, gap);
6706 p += gap;
6707 }
6708 if (esignlen && fill != '0') {
6709 for (i = 0; i < esignlen; i++)
6710 *p++ = esignbuf[i];
6711 }
fc36a67e 6712 if (zeros) {
6713 for (i = zeros; i; i--)
6714 *p++ = '0';
6715 }
46fc3d4c 6716 if (elen) {
6717 memcpy(p, eptr, elen);
6718 p += elen;
6719 }
6720 if (gap && left) {
6721 memset(p, ' ', gap);
6722 p += gap;
6723 }
b22c7a20
GS		 6724 if (vectorize) {
6725 if (veclen) {
6726 memcpy(p, dotstr, dotstrlen);
6727 p += dotstrlen;
6728 }
6729 else
6730 vectorize = FALSE; /* done iterating over vecstr */
6731 }
7e2040f0
GS		 6732 if (is_utf)
6733 SvUTF8_on(sv);
46fc3d4c 6734 *p = '\0';
6735 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 6736 if (vectorize) {
6737 esignlen = 0;
6738 goto vector;
6739 }
46fc3d4c 6740 }
6741}
51371543 6742
1d7c1841
GS		 6743#if defined(USE_ITHREADS)
6744
6745#if defined(USE_THREADS)
6746# include "error: USE_THREADS and USE_ITHREADS are incompatible"
6747#endif
6748
1d7c1841
GS		 6749#ifndef GpREFCNT_inc
6750# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6751#endif
6752
6753
6754#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6755#define av_dup(s) (AV*)sv_dup((SV*)s)
6756#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6757#define hv_dup(s) (HV*)sv_dup((SV*)s)
6758#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6759#define cv_dup(s) (CV*)sv_dup((SV*)s)
6760#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6761#define io_dup(s) (IO*)sv_dup((SV*)s)
6762#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6763#define gv_dup(s) (GV*)sv_dup((SV*)s)
6764#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6765#define SAVEPV(p) (p ? savepv(p) : Nullch)
6766#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6767
6768REGEXP *
6769Perl_re_dup(pTHX_ REGEXP *r)
6770{
6771 /* XXX fix when pmop->op_pmregexp becomes shared */
6772 return ReREFCNT_inc(r);
6773}
6774
6775PerlIO *
6776Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6777{
6778 PerlIO *ret;
6779 if (!fp)
6780 return (PerlIO*)NULL;
6781
6782 /* look for it in the table first */
6783 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6784 if (ret)
6785 return ret;
6786
6787 /* create anew and remember what it is */
6788 ret = PerlIO_fdupopen(fp);
6789 ptr_table_store(PL_ptr_table, fp, ret);
6790 return ret;
6791}
6792
6793DIR *
6794Perl_dirp_dup(pTHX_ DIR *dp)
6795{
6796 if (!dp)
6797 return (DIR*)NULL;
6798 /* XXX TODO */
6799 return dp;
6800}
6801
6802GP *
6803Perl_gp_dup(pTHX_ GP *gp)
6804{
6805 GP *ret;
6806 if (!gp)
6807 return (GP*)NULL;
6808 /* look for it in the table first */
6809 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6810 if (ret)
6811 return ret;
6812
6813 /* create anew and remember what it is */
6814 Newz(0, ret, 1, GP);
6815 ptr_table_store(PL_ptr_table, gp, ret);
6816
6817 /* clone */
6818 ret->gp_refcnt = 0; /* must be before any other dups! */
6819 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6820 ret->gp_io = io_dup_inc(gp->gp_io);
6821 ret->gp_form = cv_dup_inc(gp->gp_form);
6822 ret->gp_av = av_dup_inc(gp->gp_av);
6823 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6824 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6825 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6826 ret->gp_cvgen = gp->gp_cvgen;
6827 ret->gp_flags = gp->gp_flags;
6828 ret->gp_line = gp->gp_line;
6829 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6830 return ret;
6831}
6832
6833MAGIC *
6834Perl_mg_dup(pTHX_ MAGIC *mg)
6835{
6836 MAGIC *mgret = (MAGIC*)NULL;
6837 MAGIC *mgprev;
6838 if (!mg)
6839 return (MAGIC*)NULL;
6840 /* look for it in the table first */
6841 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6842 if (mgret)
6843 return mgret;
6844
6845 for (; mg; mg = mg->mg_moremagic) {
6846 MAGIC *nmg;
6847 Newz(0, nmg, 1, MAGIC);
6848 if (!mgret)
6849 mgret = nmg;
6850 else
6851 mgprev->mg_moremagic = nmg;
6852 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6853 nmg->mg_private = mg->mg_private;
6854 nmg->mg_type = mg->mg_type;
6855 nmg->mg_flags = mg->mg_flags;
6856 if (mg->mg_type == 'r') {
6857 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6858 }
6859 else {
6860 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6861 ? sv_dup_inc(mg->mg_obj)
6862 : sv_dup(mg->mg_obj);
6863 }
6864 nmg->mg_len = mg->mg_len;
6865 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6866 if (mg->mg_ptr && mg->mg_type != 'g') {
6867 if (mg->mg_len >= 0) {
6868 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6869 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6870 AMT *amtp = (AMT*)mg->mg_ptr;
6871 AMT *namtp = (AMT*)nmg->mg_ptr;
6872 I32 i;
6873 for (i = 1; i < NofAMmeth; i++) {
6874 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6875 }
6876 }
6877 }
6878 else if (mg->mg_len == HEf_SVKEY)
6879 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6880 }
6881 mgprev = nmg;
6882 }
6883 return mgret;
6884}
6885
6886PTR_TBL_t *
6887Perl_ptr_table_new(pTHX)
6888{
6889 PTR_TBL_t *tbl;
6890 Newz(0, tbl, 1, PTR_TBL_t);
6891 tbl->tbl_max = 511;
6892 tbl->tbl_items = 0;
6893 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6894 return tbl;
6895}
6896
6897void *
6898Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6899{
6900 PTR_TBL_ENT_t *tblent;
d2a79402 6901 UV hash = PTR2UV(sv);
1d7c1841
GS		 6902 assert(tbl);
6903 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6904 for (; tblent; tblent = tblent->next) {
6905 if (tblent->oldval == sv)
6906 return tblent->newval;
6907 }
6908 return (void*)NULL;
6909}
6910
6911void
6912Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6913{
6914 PTR_TBL_ENT_t *tblent, **otblent;
6915 /* XXX this may be pessimal on platforms where pointers aren't good
6916 * hash values e.g. if they grow faster in the most significant
6917 * bits */
d2a79402 6918 UV hash = PTR2UV(oldv);
1d7c1841
GS		 6919 bool i = 1;
6920
6921 assert(tbl);
6922 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6923 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6924 if (tblent->oldval == oldv) {
6925 tblent->newval = newv;
6926 tbl->tbl_items++;
6927 return;
6928 }
6929 }
6930 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6931 tblent->oldval = oldv;
6932 tblent->newval = newv;
6933 tblent->next = *otblent;
6934 *otblent = tblent;
6935 tbl->tbl_items++;
6936 if (i && tbl->tbl_items > tbl->tbl_max)
6937 ptr_table_split(tbl);
6938}
6939
6940void
6941Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6942{
6943 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6944 UV oldsize = tbl->tbl_max + 1;
6945 UV newsize = oldsize * 2;
6946 UV i;
6947
6948 Renew(ary, newsize, PTR_TBL_ENT_t*);
6949 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6950 tbl->tbl_max = --newsize;
6951 tbl->tbl_ary = ary;
6952 for (i=0; i < oldsize; i++, ary++) {
6953 PTR_TBL_ENT_t **curentp, **entp, *ent;
6954 if (!*ary)
6955 continue;
6956 curentp = ary + oldsize;
6957 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 6958 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 6959 *entp = ent->next;
6960 ent->next = *curentp;
6961 *curentp = ent;
6962 continue;
6963 }
6964 else
6965 entp = &ent->next;
6966 }
6967 }
6968}
6969
6970#ifdef DEBUGGING
6971char *PL_watch_pvx;
6972#endif
6973
6974SV *
6975Perl_sv_dup(pTHX_ SV *sstr)
6976{
1d7c1841
GS		 6977 SV *dstr;
6978
6979 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6980 return Nullsv;
6981 /* look for it in the table first */
6982 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6983 if (dstr)
6984 return dstr;
6985
6986 /* create anew and remember what it is */
6987 new_SV(dstr);
6988 ptr_table_store(PL_ptr_table, sstr, dstr);
6989
6990 /* clone */
6991 SvFLAGS(dstr) = SvFLAGS(sstr);
6992 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6993 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6994
6995#ifdef DEBUGGING
6996 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6997 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6998 PL_watch_pvx, SvPVX(sstr));
6999#endif
7000
7001 switch (SvTYPE(sstr)) {
7002 case SVt_NULL:
7003 SvANY(dstr) = NULL;
7004 break;
7005 case SVt_IV:
7006 SvANY(dstr) = new_XIV();
7007 SvIVX(dstr) = SvIVX(sstr);
7008 break;
7009 case SVt_NV:
7010 SvANY(dstr) = new_XNV();
7011 SvNVX(dstr) = SvNVX(sstr);
7012 break;
7013 case SVt_RV:
7014 SvANY(dstr) = new_XRV();
7015 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7016 break;
7017 case SVt_PV:
7018 SvANY(dstr) = new_XPV();
7019 SvCUR(dstr) = SvCUR(sstr);
7020 SvLEN(dstr) = SvLEN(sstr);
7021 if (SvROK(sstr))
7022 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7023 else if (SvPVX(sstr) && SvLEN(sstr))
7024 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7025 else
7026 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7027 break;
7028 case SVt_PVIV:
7029 SvANY(dstr) = new_XPVIV();
7030 SvCUR(dstr) = SvCUR(sstr);
7031 SvLEN(dstr) = SvLEN(sstr);
7032 SvIVX(dstr) = SvIVX(sstr);
7033 if (SvROK(sstr))
7034 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7035 else if (SvPVX(sstr) && SvLEN(sstr))
7036 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7037 else
7038 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7039 break;
7040 case SVt_PVNV:
7041 SvANY(dstr) = new_XPVNV();
7042 SvCUR(dstr) = SvCUR(sstr);
7043 SvLEN(dstr) = SvLEN(sstr);
7044 SvIVX(dstr) = SvIVX(sstr);
7045 SvNVX(dstr) = SvNVX(sstr);
7046 if (SvROK(sstr))
7047 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7048 else if (SvPVX(sstr) && SvLEN(sstr))
7049 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7050 else
7051 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7052 break;
7053 case SVt_PVMG:
7054 SvANY(dstr) = new_XPVMG();
7055 SvCUR(dstr) = SvCUR(sstr);
7056 SvLEN(dstr) = SvLEN(sstr);
7057 SvIVX(dstr) = SvIVX(sstr);
7058 SvNVX(dstr) = SvNVX(sstr);
7059 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7060 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7061 if (SvROK(sstr))
7062 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7063 else if (SvPVX(sstr) && SvLEN(sstr))
7064 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7065 else
7066 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7067 break;
7068 case SVt_PVBM:
7069 SvANY(dstr) = new_XPVBM();
7070 SvCUR(dstr) = SvCUR(sstr);
7071 SvLEN(dstr) = SvLEN(sstr);
7072 SvIVX(dstr) = SvIVX(sstr);
7073 SvNVX(dstr) = SvNVX(sstr);
7074 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7075 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7076 if (SvROK(sstr))
7077 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7078 else if (SvPVX(sstr) && SvLEN(sstr))
7079 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7080 else
7081 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7082 BmRARE(dstr) = BmRARE(sstr);
7083 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7084 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7085 break;
7086 case SVt_PVLV:
7087 SvANY(dstr) = new_XPVLV();
7088 SvCUR(dstr) = SvCUR(sstr);
7089 SvLEN(dstr) = SvLEN(sstr);
7090 SvIVX(dstr) = SvIVX(sstr);
7091 SvNVX(dstr) = SvNVX(sstr);
7092 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7093 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7094 if (SvROK(sstr))
7095 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7096 else if (SvPVX(sstr) && SvLEN(sstr))
7097 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7098 else
7099 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7100 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7101 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7102 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7103 LvTYPE(dstr) = LvTYPE(sstr);
7104 break;
7105 case SVt_PVGV:
7106 SvANY(dstr) = new_XPVGV();
7107 SvCUR(dstr) = SvCUR(sstr);
7108 SvLEN(dstr) = SvLEN(sstr);
7109 SvIVX(dstr) = SvIVX(sstr);
7110 SvNVX(dstr) = SvNVX(sstr);
7111 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7112 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7113 if (SvROK(sstr))
7114 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7115 else if (SvPVX(sstr) && SvLEN(sstr))
7116 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7117 else
7118 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7119 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7120 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7121 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7122 GvFLAGS(dstr) = GvFLAGS(sstr);
7123 GvGP(dstr) = gp_dup(GvGP(sstr));
7124 (void)GpREFCNT_inc(GvGP(dstr));
7125 break;
7126 case SVt_PVIO:
7127 SvANY(dstr) = new_XPVIO();
7128 SvCUR(dstr) = SvCUR(sstr);
7129 SvLEN(dstr) = SvLEN(sstr);
7130 SvIVX(dstr) = SvIVX(sstr);
7131 SvNVX(dstr) = SvNVX(sstr);
7132 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7133 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7134 if (SvROK(sstr))
7135 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7136 else if (SvPVX(sstr) && SvLEN(sstr))
7137 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7138 else
7139 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7140 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7141 if (IoOFP(sstr) == IoIFP(sstr))
7142 IoOFP(dstr) = IoIFP(dstr);
7143 else
7144 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7145 /* PL_rsfp_filters entries have fake IoDIRP() */
7146 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7147 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7148 else
7149 IoDIRP(dstr) = IoDIRP(sstr);
7150 IoLINES(dstr) = IoLINES(sstr);
7151 IoPAGE(dstr) = IoPAGE(sstr);
7152 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7153 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7154 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7155 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7156 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7157 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7158 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7159 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7160 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7161 IoTYPE(dstr) = IoTYPE(sstr);
7162 IoFLAGS(dstr) = IoFLAGS(sstr);
7163 break;
7164 case SVt_PVAV:
7165 SvANY(dstr) = new_XPVAV();
7166 SvCUR(dstr) = SvCUR(sstr);
7167 SvLEN(dstr) = SvLEN(sstr);
7168 SvIVX(dstr) = SvIVX(sstr);
7169 SvNVX(dstr) = SvNVX(sstr);
7170 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7171 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7172 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7173 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7174 if (AvARRAY((AV*)sstr)) {
7175 SV **dst_ary, **src_ary;
7176 SSize_t items = AvFILLp((AV*)sstr) + 1;
7177
7178 src_ary = AvARRAY((AV*)sstr);
7179 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7180 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7181 SvPVX(dstr) = (char*)dst_ary;
7182 AvALLOC((AV*)dstr) = dst_ary;
7183 if (AvREAL((AV*)sstr)) {
7184 while (items-- > 0)
7185 *dst_ary++ = sv_dup_inc(*src_ary++);
7186 }
7187 else {
7188 while (items-- > 0)
7189 *dst_ary++ = sv_dup(*src_ary++);
7190 }
7191 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7192 while (items-- > 0) {
7193 *dst_ary++ = &PL_sv_undef;
7194 }
7195 }
7196 else {
7197 SvPVX(dstr) = Nullch;
7198 AvALLOC((AV*)dstr) = (SV**)NULL;
7199 }
7200 break;
7201 case SVt_PVHV:
7202 SvANY(dstr) = new_XPVHV();
7203 SvCUR(dstr) = SvCUR(sstr);
7204 SvLEN(dstr) = SvLEN(sstr);
7205 SvIVX(dstr) = SvIVX(sstr);
7206 SvNVX(dstr) = SvNVX(sstr);
7207 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7208 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7209 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7210 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7211 STRLEN i = 0;
7212 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7213 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7214 Newz(0, dxhv->xhv_array,
7215 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7216 while (i <= sxhv->xhv_max) {
7217 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7218 !!HvSHAREKEYS(sstr));
7219 ++i;
7220 }
7221 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7222 }
7223 else {
7224 SvPVX(dstr) = Nullch;
7225 HvEITER((HV*)dstr) = (HE*)NULL;
7226 }
7227 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7228 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7229 break;
7230 case SVt_PVFM:
7231 SvANY(dstr) = new_XPVFM();
7232 FmLINES(dstr) = FmLINES(sstr);
7233 goto dup_pvcv;
7234 /* NOTREACHED */
7235 case SVt_PVCV:
7236 SvANY(dstr) = new_XPVCV();
7237dup_pvcv:
7238 SvCUR(dstr) = SvCUR(sstr);
7239 SvLEN(dstr) = SvLEN(sstr);
7240 SvIVX(dstr) = SvIVX(sstr);
7241 SvNVX(dstr) = SvNVX(sstr);
7242 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7243 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7244 if (SvPVX(sstr) && SvLEN(sstr))
7245 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7246 else
7247 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7248 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7249 CvSTART(dstr) = CvSTART(sstr);
7250 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7251 CvXSUB(dstr) = CvXSUB(sstr);
7252 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7253 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7254 CvDEPTH(dstr) = CvDEPTH(sstr);
7255 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7256 /* XXX padlists are real, but pretend to be not */
7257 AvREAL_on(CvPADLIST(sstr));
7258 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7259 AvREAL_off(CvPADLIST(sstr));
7260 AvREAL_off(CvPADLIST(dstr));
7261 }
7262 else
7263 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7264 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7265 CvFLAGS(dstr) = CvFLAGS(sstr);
7266 break;
7267 default:
7268 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7269 break;
7270 }
7271
7272 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7273 ++PL_sv_objcount;
7274
7275 return dstr;
7276}
7277
7278PERL_CONTEXT *
7279Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7280{
7281 PERL_CONTEXT *ncxs;
7282
7283 if (!cxs)
7284 return (PERL_CONTEXT*)NULL;
7285
7286 /* look for it in the table first */
7287 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7288 if (ncxs)
7289 return ncxs;
7290
7291 /* create anew and remember what it is */
7292 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7293 ptr_table_store(PL_ptr_table, cxs, ncxs);
7294
7295 while (ix >= 0) {
7296 PERL_CONTEXT *cx = &cxs[ix];
7297 PERL_CONTEXT *ncx = &ncxs[ix];
7298 ncx->cx_type = cx->cx_type;
7299 if (CxTYPE(cx) == CXt_SUBST) {
7300 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7301 }
7302 else {
7303 ncx->blk_oldsp = cx->blk_oldsp;
7304 ncx->blk_oldcop = cx->blk_oldcop;
7305 ncx->blk_oldretsp = cx->blk_oldretsp;
7306 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7307 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7308 ncx->blk_oldpm = cx->blk_oldpm;
7309 ncx->blk_gimme = cx->blk_gimme;
7310 switch (CxTYPE(cx)) {
7311 case CXt_SUB:
7312 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7313 ? cv_dup_inc(cx->blk_sub.cv)
7314 : cv_dup(cx->blk_sub.cv));
7315 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7316 ? av_dup_inc(cx->blk_sub.argarray)
7317 : Nullav);
7318 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7319 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7320 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7321 ncx->blk_sub.lval = cx->blk_sub.lval;
7322 break;
7323 case CXt_EVAL:
7324 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7325 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 7326 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 7327 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7328 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7329 break;
7330 case CXt_LOOP:
7331 ncx->blk_loop.label = cx->blk_loop.label;
7332 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7333 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7334 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7335 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7336 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7337 ? cx->blk_loop.iterdata
7338 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 7339 ncx->blk_loop.oldcurpad
7340 = (SV**)ptr_table_fetch(PL_ptr_table,
7341 cx->blk_loop.oldcurpad);
1d7c1841
GS		 7342 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7343 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7344 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7345 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7346 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7347 break;
7348 case CXt_FORMAT:
7349 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7350 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7351 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7352 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7353 break;
7354 case CXt_BLOCK:
7355 case CXt_NULL:
7356 break;
7357 }
7358 }
7359 --ix;
7360 }
7361 return ncxs;
7362}
7363
7364PERL_SI *
7365Perl_si_dup(pTHX_ PERL_SI *si)
7366{
7367 PERL_SI *nsi;
7368
7369 if (!si)
7370 return (PERL_SI*)NULL;
7371
7372 /* look for it in the table first */
7373 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7374 if (nsi)
7375 return nsi;
7376
7377 /* create anew and remember what it is */
7378 Newz(56, nsi, 1, PERL_SI);
7379 ptr_table_store(PL_ptr_table, si, nsi);
7380
7381 nsi->si_stack = av_dup_inc(si->si_stack);
7382 nsi->si_cxix = si->si_cxix;
7383 nsi->si_cxmax = si->si_cxmax;
7384 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7385 nsi->si_type = si->si_type;
7386 nsi->si_prev = si_dup(si->si_prev);
7387 nsi->si_next = si_dup(si->si_next);
7388 nsi->si_markoff = si->si_markoff;
7389
7390 return nsi;
7391}
7392
7393#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7394#define TOPINT(ss,ix) ((ss)[ix].any_i32)
7395#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7396#define TOPLONG(ss,ix) ((ss)[ix].any_long)
7397#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7398#define TOPIV(ss,ix) ((ss)[ix].any_iv)
7399#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7400#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7401#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7402#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7403#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7404#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7405
7406/* XXXXX todo */
7407#define pv_dup_inc(p) SAVEPV(p)
7408#define pv_dup(p) SAVEPV(p)
7409#define svp_dup_inc(p,pp) any_dup(p,pp)
7410
7411void *
7412Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7413{
7414 void *ret;
7415
7416 if (!v)
7417 return (void*)NULL;
7418
7419 /* look for it in the table first */
7420 ret = ptr_table_fetch(PL_ptr_table, v);
7421 if (ret)
7422 return ret;
7423
7424 /* see if it is part of the interpreter structure */
7425 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7426 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7427 else
7428 ret = v;
7429
7430 return ret;
7431}
7432
7433ANY *
7434Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7435{
7436 ANY *ss = proto_perl->Tsavestack;
7437 I32 ix = proto_perl->Tsavestack_ix;
7438 I32 max = proto_perl->Tsavestack_max;
7439 ANY *nss;
7440 SV *sv;
7441 GV *gv;
7442 AV *av;
7443 HV *hv;
7444 void* ptr;
7445 int intval;
7446 long longval;
7447 GP *gp;
7448 IV iv;
7449 I32 i;
7450 char *c;
7451 void (*dptr) (void*);
7452 void (*dxptr) (pTHXo_ void*);
e977893f 7453 OP *o;
1d7c1841
GS		 7454
7455 Newz(54, nss, max, ANY);
7456
7457 while (ix > 0) {
7458 i = POPINT(ss,ix);
7459 TOPINT(nss,ix) = i;
7460 switch (i) {
7461 case SAVEt_ITEM: /* normal string */
7462 sv = (SV*)POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = sv_dup_inc(sv);
7464 sv = (SV*)POPPTR(ss,ix);
7465 TOPPTR(nss,ix) = sv_dup_inc(sv);
7466 break;
7467 case SAVEt_SV: /* scalar reference */
7468 sv = (SV*)POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = sv_dup_inc(sv);
7470 gv = (GV*)POPPTR(ss,ix);
7471 TOPPTR(nss,ix) = gv_dup_inc(gv);
7472 break;
f4dd75d9
GS		 7473 case SAVEt_GENERIC_PVREF: /* generic char* */
7474 c = (char*)POPPTR(ss,ix);
7475 TOPPTR(nss,ix) = pv_dup(c);
7476 ptr = POPPTR(ss,ix);
7477 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7478 break;
1d7c1841
GS		 7479 case SAVEt_GENERIC_SVREF: /* generic sv */
7480 case SAVEt_SVREF: /* scalar reference */
7481 sv = (SV*)POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = sv_dup_inc(sv);
7483 ptr = POPPTR(ss,ix);
7484 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7485 break;
7486 case SAVEt_AV: /* array reference */
7487 av = (AV*)POPPTR(ss,ix);
7488 TOPPTR(nss,ix) = av_dup_inc(av);
7489 gv = (GV*)POPPTR(ss,ix);
7490 TOPPTR(nss,ix) = gv_dup(gv);
7491 break;
7492 case SAVEt_HV: /* hash reference */
7493 hv = (HV*)POPPTR(ss,ix);
7494 TOPPTR(nss,ix) = hv_dup_inc(hv);
7495 gv = (GV*)POPPTR(ss,ix);
7496 TOPPTR(nss,ix) = gv_dup(gv);
7497 break;
7498 case SAVEt_INT: /* int reference */
7499 ptr = POPPTR(ss,ix);
7500 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7501 intval = (int)POPINT(ss,ix);
7502 TOPINT(nss,ix) = intval;
7503 break;
7504 case SAVEt_LONG: /* long reference */
7505 ptr = POPPTR(ss,ix);
7506 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7507 longval = (long)POPLONG(ss,ix);
7508 TOPLONG(nss,ix) = longval;
7509 break;
7510 case SAVEt_I32: /* I32 reference */
7511 case SAVEt_I16: /* I16 reference */
7512 case SAVEt_I8: /* I8 reference */
7513 ptr = POPPTR(ss,ix);
7514 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7515 i = POPINT(ss,ix);
7516 TOPINT(nss,ix) = i;
7517 break;
7518 case SAVEt_IV: /* IV reference */
7519 ptr = POPPTR(ss,ix);
7520 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7521 iv = POPIV(ss,ix);
7522 TOPIV(nss,ix) = iv;
7523 break;
7524 case SAVEt_SPTR: /* SV* reference */
7525 ptr = POPPTR(ss,ix);
7526 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7527 sv = (SV*)POPPTR(ss,ix);
7528 TOPPTR(nss,ix) = sv_dup(sv);
7529 break;
7530 case SAVEt_VPTR: /* random* reference */
7531 ptr = POPPTR(ss,ix);
7532 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7533 ptr = POPPTR(ss,ix);
7534 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7535 break;
7536 case SAVEt_PPTR: /* char* reference */
7537 ptr = POPPTR(ss,ix);
7538 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7539 c = (char*)POPPTR(ss,ix);
7540 TOPPTR(nss,ix) = pv_dup(c);
7541 break;
7542 case SAVEt_HPTR: /* HV* reference */
7543 ptr = POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7545 hv = (HV*)POPPTR(ss,ix);
7546 TOPPTR(nss,ix) = hv_dup(hv);
7547 break;
7548 case SAVEt_APTR: /* AV* reference */
7549 ptr = POPPTR(ss,ix);
7550 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7551 av = (AV*)POPPTR(ss,ix);
7552 TOPPTR(nss,ix) = av_dup(av);
7553 break;
7554 case SAVEt_NSTAB:
7555 gv = (GV*)POPPTR(ss,ix);
7556 TOPPTR(nss,ix) = gv_dup(gv);
7557 break;
7558 case SAVEt_GP: /* scalar reference */
7559 gp = (GP*)POPPTR(ss,ix);
7560 TOPPTR(nss,ix) = gp = gp_dup(gp);
7561 (void)GpREFCNT_inc(gp);
7562 gv = (GV*)POPPTR(ss,ix);
7563 TOPPTR(nss,ix) = gv_dup_inc(c);
7564 c = (char*)POPPTR(ss,ix);
7565 TOPPTR(nss,ix) = pv_dup(c);
7566 iv = POPIV(ss,ix);
7567 TOPIV(nss,ix) = iv;
7568 iv = POPIV(ss,ix);
7569 TOPIV(nss,ix) = iv;
7570 break;
7571 case SAVEt_FREESV:
7572 sv = (SV*)POPPTR(ss,ix);
7573 TOPPTR(nss,ix) = sv_dup_inc(sv);
7574 break;
7575 case SAVEt_FREEOP:
7576 ptr = POPPTR(ss,ix);
7577 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7578 /* these are assumed to be refcounted properly */
7579 switch (((OP*)ptr)->op_type) {
7580 case OP_LEAVESUB:
7581 case OP_LEAVESUBLV:
7582 case OP_LEAVEEVAL:
7583 case OP_LEAVE:
7584 case OP_SCOPE:
7585 case OP_LEAVEWRITE:
e977893f
GS		 7586 TOPPTR(nss,ix) = ptr;
7587 o = (OP*)ptr;
7588 OpREFCNT_inc(o);
1d7c1841
GS		 7589 break;
7590 default:
7591 TOPPTR(nss,ix) = Nullop;
7592 break;
7593 }
7594 }
7595 else
7596 TOPPTR(nss,ix) = Nullop;
7597 break;
7598 case SAVEt_FREEPV:
7599 c = (char*)POPPTR(ss,ix);
7600 TOPPTR(nss,ix) = pv_dup_inc(c);
7601 break;
7602 case SAVEt_CLEARSV:
7603 longval = POPLONG(ss,ix);
7604 TOPLONG(nss,ix) = longval;
7605 break;
7606 case SAVEt_DELETE:
7607 hv = (HV*)POPPTR(ss,ix);
7608 TOPPTR(nss,ix) = hv_dup_inc(hv);
7609 c = (char*)POPPTR(ss,ix);
7610 TOPPTR(nss,ix) = pv_dup_inc(c);
7611 i = POPINT(ss,ix);
7612 TOPINT(nss,ix) = i;
7613 break;
7614 case SAVEt_DESTRUCTOR:
7615 ptr = POPPTR(ss,ix);
7616 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7617 dptr = POPDPTR(ss,ix);
ef75a179 7618 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 7619 break;
7620 case SAVEt_DESTRUCTOR_X:
7621 ptr = POPPTR(ss,ix);
7622 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7623 dxptr = POPDXPTR(ss,ix);
ef75a179 7624 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 7625 break;
7626 case SAVEt_REGCONTEXT:
7627 case SAVEt_ALLOC:
7628 i = POPINT(ss,ix);
7629 TOPINT(nss,ix) = i;
7630 ix -= i;
7631 break;
7632 case SAVEt_STACK_POS: /* Position on Perl stack */
7633 i = POPINT(ss,ix);
7634 TOPINT(nss,ix) = i;
7635 break;
7636 case SAVEt_AELEM: /* array element */
7637 sv = (SV*)POPPTR(ss,ix);
7638 TOPPTR(nss,ix) = sv_dup_inc(sv);
7639 i = POPINT(ss,ix);
7640 TOPINT(nss,ix) = i;
7641 av = (AV*)POPPTR(ss,ix);
7642 TOPPTR(nss,ix) = av_dup_inc(av);
7643 break;
7644 case SAVEt_HELEM: /* hash element */
7645 sv = (SV*)POPPTR(ss,ix);
7646 TOPPTR(nss,ix) = sv_dup_inc(sv);
7647 sv = (SV*)POPPTR(ss,ix);
7648 TOPPTR(nss,ix) = sv_dup_inc(sv);
7649 hv = (HV*)POPPTR(ss,ix);
7650 TOPPTR(nss,ix) = hv_dup_inc(hv);
7651 break;
7652 case SAVEt_OP:
7653 ptr = POPPTR(ss,ix);
7654 TOPPTR(nss,ix) = ptr;
7655 break;
7656 case SAVEt_HINTS:
7657 i = POPINT(ss,ix);
7658 TOPINT(nss,ix) = i;
7659 break;
c4410b1b
GS		 7660 case SAVEt_COMPPAD:
7661 av = (AV*)POPPTR(ss,ix);
7662 TOPPTR(nss,ix) = av_dup(av);
7663 break;
c3564e5c
GS		 7664 case SAVEt_PADSV:
7665 longval = (long)POPLONG(ss,ix);
7666 TOPLONG(nss,ix) = longval;
7667 ptr = POPPTR(ss,ix);
7668 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7669 sv = (SV*)POPPTR(ss,ix);
7670 TOPPTR(nss,ix) = sv_dup(sv);
7671 break;
1d7c1841
GS		 7672 default:
7673 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7674 }
7675 }
7676
7677 return nss;
7678}
7679
7680#ifdef PERL_OBJECT
7681#include "XSUB.h"
7682#endif
7683
7684PerlInterpreter *
7685perl_clone(PerlInterpreter *proto_perl, UV flags)
7686{
7687#ifdef PERL_OBJECT
7688 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7689#endif
7690
7691#ifdef PERL_IMPLICIT_SYS
7692 return perl_clone_using(proto_perl, flags,
7693 proto_perl->IMem,
7694 proto_perl->IMemShared,
7695 proto_perl->IMemParse,
7696 proto_perl->IEnv,
7697 proto_perl->IStdIO,
7698 proto_perl->ILIO,
7699 proto_perl->IDir,
7700 proto_perl->ISock,
7701 proto_perl->IProc);
7702}
7703
7704PerlInterpreter *
7705perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7706 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7707 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7708 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7709 struct IPerlDir* ipD, struct IPerlSock* ipS,
7710 struct IPerlProc* ipP)
7711{
7712 /* XXX many of the string copies here can be optimized if they're
7713 * constants; they need to be allocated as common memory and just
7714 * their pointers copied. */
7715
7716 IV i;
1d7c1841
GS		 7717# ifdef PERL_OBJECT
7718 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7719 ipD, ipS, ipP);
ba869deb 7720 PERL_SET_THX(pPerl);
1d7c1841
GS		 7721# else /* !PERL_OBJECT */
7722 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 7723 PERL_SET_THX(my_perl);
1d7c1841
GS		 7724
7725# ifdef DEBUGGING
7726 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7727 PL_markstack = 0;
7728 PL_scopestack = 0;
7729 PL_savestack = 0;
7730 PL_retstack = 0;
7731# else /* !DEBUGGING */
7732 Zero(my_perl, 1, PerlInterpreter);
7733# endif /* DEBUGGING */
7734
7735 /* host pointers */
7736 PL_Mem = ipM;
7737 PL_MemShared = ipMS;
7738 PL_MemParse = ipMP;
7739 PL_Env = ipE;
7740 PL_StdIO = ipStd;
7741 PL_LIO = ipLIO;
7742 PL_Dir = ipD;
7743 PL_Sock = ipS;
7744 PL_Proc = ipP;
7745# endif /* PERL_OBJECT */
7746#else /* !PERL_IMPLICIT_SYS */
7747 IV i;
1d7c1841 7748 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 7749 PERL_SET_THX(my_perl);
1d7c1841
GS		 7750
7751# ifdef DEBUGGING
7752 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7753 PL_markstack = 0;
7754 PL_scopestack = 0;
7755 PL_savestack = 0;
7756 PL_retstack = 0;
7757# else /* !DEBUGGING */
7758 Zero(my_perl, 1, PerlInterpreter);
7759# endif /* DEBUGGING */
7760#endif /* PERL_IMPLICIT_SYS */
7761
7762 /* arena roots */
7763 PL_xiv_arenaroot = NULL;
7764 PL_xiv_root = NULL;
612f20c3 7765 PL_xnv_arenaroot = NULL;
1d7c1841 7766 PL_xnv_root = NULL;
612f20c3 7767 PL_xrv_arenaroot = NULL;
1d7c1841 7768 PL_xrv_root = NULL;
612f20c3 7769 PL_xpv_arenaroot = NULL;
1d7c1841 7770 PL_xpv_root = NULL;
612f20c3 7771 PL_xpviv_arenaroot = NULL;
1d7c1841 7772 PL_xpviv_root = NULL;
612f20c3 7773 PL_xpvnv_arenaroot = NULL;
1d7c1841 7774 PL_xpvnv_root = NULL;
612f20c3 7775 PL_xpvcv_arenaroot = NULL;
1d7c1841 7776 PL_xpvcv_root = NULL;
612f20c3 7777 PL_xpvav_arenaroot = NULL;
1d7c1841 7778 PL_xpvav_root = NULL;
612f20c3 7779 PL_xpvhv_arenaroot = NULL;
1d7c1841 7780 PL_xpvhv_root = NULL;
612f20c3 7781 PL_xpvmg_arenaroot = NULL;
1d7c1841 7782 PL_xpvmg_root = NULL;
612f20c3 7783 PL_xpvlv_arenaroot = NULL;
1d7c1841 7784 PL_xpvlv_root = NULL;
612f20c3 7785 PL_xpvbm_arenaroot = NULL;
1d7c1841 7786 PL_xpvbm_root = NULL;
612f20c3 7787 PL_he_arenaroot = NULL;
1d7c1841
GS		 7788 PL_he_root = NULL;
7789 PL_nice_chunk = NULL;
7790 PL_nice_chunk_size = 0;
7791 PL_sv_count = 0;
7792 PL_sv_objcount = 0;
7793 PL_sv_root = Nullsv;
7794 PL_sv_arenaroot = Nullsv;
7795
7796 PL_debug = proto_perl->Idebug;
7797
7798 /* create SV map for pointer relocation */
7799 PL_ptr_table = ptr_table_new();
7800
7801 /* initialize these special pointers as early as possible */
7802 SvANY(&PL_sv_undef) = NULL;
7803 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7804 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7805 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7806
7807#ifdef PERL_OBJECT
7808 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7809#else
7810 SvANY(&PL_sv_no) = new_XPVNV();
7811#endif
7812 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7813 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7814 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7815 SvCUR(&PL_sv_no) = 0;
7816 SvLEN(&PL_sv_no) = 1;
7817 SvNVX(&PL_sv_no) = 0;
7818 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7819
7820#ifdef PERL_OBJECT
7821 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7822#else
7823 SvANY(&PL_sv_yes) = new_XPVNV();
7824#endif
7825 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7826 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7827 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7828 SvCUR(&PL_sv_yes) = 1;
7829 SvLEN(&PL_sv_yes) = 2;
7830 SvNVX(&PL_sv_yes) = 1;
7831 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7832
7833 /* create shared string table */
7834 PL_strtab = newHV();
7835 HvSHAREKEYS_off(PL_strtab);
7836 hv_ksplit(PL_strtab, 512);
7837 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7838
7839 PL_compiling = proto_perl->Icompiling;
7840 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7841 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7842 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7843 if (!specialWARN(PL_compiling.cop_warnings))
7844 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
ac27b0f5
NIS		 7845 if (!specialCopIO(PL_compiling.cop_io))
7846 PL_compiling.cop_io = sv_dup_inc(PL_compiling.cop_io);
1d7c1841
GS		 7847 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7848
7849 /* pseudo environmental stuff */
7850 PL_origargc = proto_perl->Iorigargc;
7851 i = PL_origargc;
7852 New(0, PL_origargv, i+1, char*);
7853 PL_origargv[i] = '\0';
7854 while (i-- > 0) {
7855 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7856 }
7857 PL_envgv = gv_dup(proto_perl->Ienvgv);
7858 PL_incgv = gv_dup(proto_perl->Iincgv);
7859 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7860 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7861 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7862 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7863
7864 /* switches */
7865 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 7866 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 7867 PL_localpatches = proto_perl->Ilocalpatches;
7868 PL_splitstr = proto_perl->Isplitstr;
7869 PL_preprocess = proto_perl->Ipreprocess;
7870 PL_minus_n = proto_perl->Iminus_n;
7871 PL_minus_p = proto_perl->Iminus_p;
7872 PL_minus_l = proto_perl->Iminus_l;
7873 PL_minus_a = proto_perl->Iminus_a;
7874 PL_minus_F = proto_perl->Iminus_F;
7875 PL_doswitches = proto_perl->Idoswitches;
7876 PL_dowarn = proto_perl->Idowarn;
7877 PL_doextract = proto_perl->Idoextract;
7878 PL_sawampersand = proto_perl->Isawampersand;
7879 PL_unsafe = proto_perl->Iunsafe;
7880 PL_inplace = SAVEPV(proto_perl->Iinplace);
7881 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7882 PL_perldb = proto_perl->Iperldb;
7883 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7884
7885 /* magical thingies */
7886 /* XXX time(&PL_basetime) when asked for? */
7887 PL_basetime = proto_perl->Ibasetime;
7888 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7889
7890 PL_maxsysfd = proto_perl->Imaxsysfd;
7891 PL_multiline = proto_perl->Imultiline;
7892 PL_statusvalue = proto_perl->Istatusvalue;
7893#ifdef VMS
7894 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7895#endif
7896
7897 /* shortcuts to various I/O objects */
7898 PL_stdingv = gv_dup(proto_perl->Istdingv);
7899 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7900 PL_defgv = gv_dup(proto_perl->Idefgv);
7901 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7902 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7903 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7904
7905 /* shortcuts to regexp stuff */
7906 PL_replgv = gv_dup(proto_perl->Ireplgv);
7907
7908 /* shortcuts to misc objects */
7909 PL_errgv = gv_dup(proto_perl->Ierrgv);
7910
7911 /* shortcuts to debugging objects */
7912 PL_DBgv = gv_dup(proto_perl->IDBgv);
7913 PL_DBline = gv_dup(proto_perl->IDBline);
7914 PL_DBsub = gv_dup(proto_perl->IDBsub);
7915 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7916 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7917 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7918 PL_lineary = av_dup(proto_perl->Ilineary);
7919 PL_dbargs = av_dup(proto_perl->Idbargs);
7920
7921 /* symbol tables */
7922 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7923 PL_curstash = hv_dup(proto_perl->Tcurstash);
7924 PL_debstash = hv_dup(proto_perl->Idebstash);
7925 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7926 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7927
7928 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7929 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 7930 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 7931 PL_initav = av_dup_inc(proto_perl->Iinitav);
7932
7933 PL_sub_generation = proto_perl->Isub_generation;
7934
7935 /* funky return mechanisms */
7936 PL_forkprocess = proto_perl->Iforkprocess;
7937
7938 /* subprocess state */
7939 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7940
7941 /* internal state */
7942 PL_tainting = proto_perl->Itainting;
7943 PL_maxo = proto_perl->Imaxo;
7944 if (proto_perl->Iop_mask)
7945 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7946 else
7947 PL_op_mask = Nullch;
7948
7949 /* current interpreter roots */
7950 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7951 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7952 PL_main_start = proto_perl->Imain_start;
e977893f 7953 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 7954 PL_eval_start = proto_perl->Ieval_start;
7955
7956 /* runtime control stuff */
7957 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7958 PL_copline = proto_perl->Icopline;
7959
7960 PL_filemode = proto_perl->Ifilemode;
7961 PL_lastfd = proto_perl->Ilastfd;
7962 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7963 PL_Argv = NULL;
7964 PL_Cmd = Nullch;
7965 PL_gensym = proto_perl->Igensym;
7966 PL_preambled = proto_perl->Ipreambled;
7967 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7968 PL_laststatval = proto_perl->Ilaststatval;
7969 PL_laststype = proto_perl->Ilaststype;
7970 PL_mess_sv = Nullsv;
7971
7972 PL_orslen = proto_perl->Iorslen;
7973 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7974 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7975
7976 /* interpreter atexit processing */
7977 PL_exitlistlen = proto_perl->Iexitlistlen;
7978 if (PL_exitlistlen) {
7979 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7980 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7981 }
7982 else
7983 PL_exitlist = (PerlExitListEntry*)NULL;
7984 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7985
7986 PL_profiledata = NULL;
7987 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7988 /* PL_rsfp_filters entries have fake IoDIRP() */
7989 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7990
7991 PL_compcv = cv_dup(proto_perl->Icompcv);
7992 PL_comppad = av_dup(proto_perl->Icomppad);
7993 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7994 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7995 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7996 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7997 proto_perl->Tcurpad);
7998
7999#ifdef HAVE_INTERP_INTERN
8000 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
8001#endif
8002
8003 /* more statics moved here */
8004 PL_generation = proto_perl->Igeneration;
8005 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 8006
8007 PL_in_clean_objs = proto_perl->Iin_clean_objs;
8008 PL_in_clean_all = proto_perl->Iin_clean_all;
8009
8010 PL_uid = proto_perl->Iuid;
8011 PL_euid = proto_perl->Ieuid;
8012 PL_gid = proto_perl->Igid;
8013 PL_egid = proto_perl->Iegid;
8014 PL_nomemok = proto_perl->Inomemok;
8015 PL_an = proto_perl->Ian;
8016 PL_cop_seqmax = proto_perl->Icop_seqmax;
8017 PL_op_seqmax = proto_perl->Iop_seqmax;
8018 PL_evalseq = proto_perl->Ievalseq;
8019 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8020 PL_origalen = proto_perl->Iorigalen;
8021 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8022 PL_osname = SAVEPV(proto_perl->Iosname);
8023 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8024 PL_sighandlerp = proto_perl->Isighandlerp;
8025
8026
8027 PL_runops = proto_perl->Irunops;
8028
8029 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8030
8031#ifdef CSH
8032 PL_cshlen = proto_perl->Icshlen;
8033 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8034#endif
8035
8036 PL_lex_state = proto_perl->Ilex_state;
8037 PL_lex_defer = proto_perl->Ilex_defer;
8038 PL_lex_expect = proto_perl->Ilex_expect;
8039 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8040 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8041 PL_lex_starts = proto_perl->Ilex_starts;
8042 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8043 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8044 PL_lex_op = proto_perl->Ilex_op;
8045 PL_lex_inpat = proto_perl->Ilex_inpat;
8046 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8047 PL_lex_brackets = proto_perl->Ilex_brackets;
8048 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8049 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8050 PL_lex_casemods = proto_perl->Ilex_casemods;
8051 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8052 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8053
8054 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8055 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8056 PL_nexttoke = proto_perl->Inexttoke;
8057
8058 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8059 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8060 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8061 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8062 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8063 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8064 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8065 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8066 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8067 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8068 PL_pending_ident = proto_perl->Ipending_ident;
8069 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8070
8071 PL_expect = proto_perl->Iexpect;
8072
8073 PL_multi_start = proto_perl->Imulti_start;
8074 PL_multi_end = proto_perl->Imulti_end;
8075 PL_multi_open = proto_perl->Imulti_open;
8076 PL_multi_close = proto_perl->Imulti_close;
8077
8078 PL_error_count = proto_perl->Ierror_count;
8079 PL_subline = proto_perl->Isubline;
8080 PL_subname = sv_dup_inc(proto_perl->Isubname);
8081
8082 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8083 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8084 PL_padix = proto_perl->Ipadix;
8085 PL_padix_floor = proto_perl->Ipadix_floor;
8086 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8087
8088 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8089 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8090 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8091 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8092 PL_last_lop_op = proto_perl->Ilast_lop_op;
8093 PL_in_my = proto_perl->Iin_my;
8094 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8095#ifdef FCRYPT
8096 PL_cryptseen = proto_perl->Icryptseen;
8097#endif
8098
8099 PL_hints = proto_perl->Ihints;
8100
8101 PL_amagic_generation = proto_perl->Iamagic_generation;
8102
8103#ifdef USE_LOCALE_COLLATE
8104 PL_collation_ix = proto_perl->Icollation_ix;
8105 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8106 PL_collation_standard = proto_perl->Icollation_standard;
8107 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8108 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8109#endif /* USE_LOCALE_COLLATE */
8110
8111#ifdef USE_LOCALE_NUMERIC
8112 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8113 PL_numeric_standard = proto_perl->Inumeric_standard;
8114 PL_numeric_local = proto_perl->Inumeric_local;
8115 PL_numeric_radix = proto_perl->Inumeric_radix;
8116#endif /* !USE_LOCALE_NUMERIC */
8117
8118 /* utf8 character classes */
8119 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8120 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8121 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8122 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8123 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8124 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8125 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8126 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8127 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8128 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8129 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8130 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8131 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8132 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8133 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8134 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8135 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8136
8137 /* swatch cache */
8138 PL_last_swash_hv = Nullhv; /* reinits on demand */
8139 PL_last_swash_klen = 0;
8140 PL_last_swash_key[0]= '\0';
8141 PL_last_swash_tmps = (U8*)NULL;
8142 PL_last_swash_slen = 0;
8143
8144 /* perly.c globals */
8145 PL_yydebug = proto_perl->Iyydebug;
8146 PL_yynerrs = proto_perl->Iyynerrs;
8147 PL_yyerrflag = proto_perl->Iyyerrflag;
8148 PL_yychar = proto_perl->Iyychar;
8149 PL_yyval = proto_perl->Iyyval;
8150 PL_yylval = proto_perl->Iyylval;
8151
8152 PL_glob_index = proto_perl->Iglob_index;
8153 PL_srand_called = proto_perl->Isrand_called;
8154 PL_uudmap['M'] = 0; /* reinits on demand */
8155 PL_bitcount = Nullch; /* reinits on demand */
8156
8157 if (proto_perl->Ipsig_ptr) {
8158 int sig_num[] = { SIG_NUM };
8159 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8160 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8161 for (i = 1; PL_sig_name[i]; i++) {
8162 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8163 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8164 }
8165 }
8166 else {
8167 PL_psig_ptr = (SV**)NULL;
8168 PL_psig_name = (SV**)NULL;
8169 }
8170
8171 /* thrdvar.h stuff */
8172
8173 if (flags & 1) {
8174 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8175 PL_tmps_ix = proto_perl->Ttmps_ix;
8176 PL_tmps_max = proto_perl->Ttmps_max;
8177 PL_tmps_floor = proto_perl->Ttmps_floor;
8178 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8179 i = 0;
8180 while (i <= PL_tmps_ix) {
8181 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8182 ++i;
8183 }
8184
8185 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8186 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8187 Newz(54, PL_markstack, i, I32);
8188 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8189 - proto_perl->Tmarkstack);
8190 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8191 - proto_perl->Tmarkstack);
8192 Copy(proto_perl->Tmarkstack, PL_markstack,
8193 PL_markstack_ptr - PL_markstack + 1, I32);
8194
8195 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8196 * NOTE: unlike the others! */
8197 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8198 PL_scopestack_max = proto_perl->Tscopestack_max;
8199 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8200 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8201
8202 /* next push_return() sets PL_retstack[PL_retstack_ix]
8203 * NOTE: unlike the others! */
8204 PL_retstack_ix = proto_perl->Tretstack_ix;
8205 PL_retstack_max = proto_perl->Tretstack_max;
8206 Newz(54, PL_retstack, PL_retstack_max, OP*);
8207 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8208
8209 /* NOTE: si_dup() looks at PL_markstack */
8210 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8211
8212 /* PL_curstack = PL_curstackinfo->si_stack; */
8213 PL_curstack = av_dup(proto_perl->Tcurstack);
8214 PL_mainstack = av_dup(proto_perl->Tmainstack);
8215
8216 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8217 PL_stack_base = AvARRAY(PL_curstack);
8218 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8219 - proto_perl->Tstack_base);
8220 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8221
8222 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8223 * NOTE: unlike the others! */
8224 PL_savestack_ix = proto_perl->Tsavestack_ix;
8225 PL_savestack_max = proto_perl->Tsavestack_max;
8226 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8227 PL_savestack = ss_dup(proto_perl);
8228 }
8229 else {
8230 init_stacks();
985e7056 8231 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8232 }
8233
8234 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8235 PL_top_env = &PL_start_env;
8236
8237 PL_op = proto_perl->Top;
8238
8239 PL_Sv = Nullsv;
8240 PL_Xpv = (XPV*)NULL;
8241 PL_na = proto_perl->Tna;
8242
8243 PL_statbuf = proto_perl->Tstatbuf;
8244 PL_statcache = proto_perl->Tstatcache;
8245 PL_statgv = gv_dup(proto_perl->Tstatgv);
8246 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8247#ifdef HAS_TIMES
8248 PL_timesbuf = proto_perl->Ttimesbuf;
8249#endif
8250
8251 PL_tainted = proto_perl->Ttainted;
8252 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8253 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8254 PL_rs = sv_dup_inc(proto_perl->Trs);
8255 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8256 PL_ofslen = proto_perl->Tofslen;
8257 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8258 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8259 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8260 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8261 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8262 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8263
8264 PL_restartop = proto_perl->Trestartop;
8265 PL_in_eval = proto_perl->Tin_eval;
8266 PL_delaymagic = proto_perl->Tdelaymagic;
8267 PL_dirty = proto_perl->Tdirty;
8268 PL_localizing = proto_perl->Tlocalizing;
8269
14dd3ad8 8270#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 8271 PL_protect = proto_perl->Tprotect;
14dd3ad8 8272#endif
1d7c1841
GS		 8273 PL_errors = sv_dup_inc(proto_perl->Terrors);
8274 PL_av_fetch_sv = Nullsv;
8275 PL_hv_fetch_sv = Nullsv;
8276 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8277 PL_modcount = proto_perl->Tmodcount;
8278 PL_lastgotoprobe = Nullop;
8279 PL_dumpindent = proto_perl->Tdumpindent;
8280
8281 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8282 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8283 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8284 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8285 PL_sortcxix = proto_perl->Tsortcxix;
8286 PL_efloatbuf = Nullch; /* reinits on demand */
8287 PL_efloatsize = 0; /* reinits on demand */
8288
8289 /* regex stuff */
8290
8291 PL_screamfirst = NULL;
8292 PL_screamnext = NULL;
8293 PL_maxscream = -1; /* reinits on demand */
8294 PL_lastscream = Nullsv;
8295
8296 PL_watchaddr = NULL;
8297 PL_watchok = Nullch;
8298
8299 PL_regdummy = proto_perl->Tregdummy;
8300 PL_regcomp_parse = Nullch;
8301 PL_regxend = Nullch;
8302 PL_regcode = (regnode*)NULL;
8303 PL_regnaughty = 0;
8304 PL_regsawback = 0;
8305 PL_regprecomp = Nullch;
8306 PL_regnpar = 0;
8307 PL_regsize = 0;
8308 PL_regflags = 0;
8309 PL_regseen = 0;
8310 PL_seen_zerolen = 0;
8311 PL_seen_evals = 0;
8312 PL_regcomp_rx = (regexp*)NULL;
8313 PL_extralen = 0;
8314 PL_colorset = 0; /* reinits PL_colors[] */
8315 /*PL_colors[6] = {0,0,0,0,0,0};*/
8316 PL_reg_whilem_seen = 0;
8317 PL_reginput = Nullch;
8318 PL_regbol = Nullch;
8319 PL_regeol = Nullch;
8320 PL_regstartp = (I32*)NULL;
8321 PL_regendp = (I32*)NULL;
8322 PL_reglastparen = (U32*)NULL;
8323 PL_regtill = Nullch;
8324 PL_regprev = '\n';
8325 PL_reg_start_tmp = (char**)NULL;
8326 PL_reg_start_tmpl = 0;
8327 PL_regdata = (struct reg_data*)NULL;
8328 PL_bostr = Nullch;
8329 PL_reg_flags = 0;
8330 PL_reg_eval_set = 0;
8331 PL_regnarrate = 0;
8332 PL_regprogram = (regnode*)NULL;
8333 PL_regindent = 0;
8334 PL_regcc = (CURCUR*)NULL;
8335 PL_reg_call_cc = (struct re_cc_state*)NULL;
8336 PL_reg_re = (regexp*)NULL;
8337 PL_reg_ganch = Nullch;
8338 PL_reg_sv = Nullsv;
8339 PL_reg_magic = (MAGIC*)NULL;
8340 PL_reg_oldpos = 0;
8341 PL_reg_oldcurpm = (PMOP*)NULL;
8342 PL_reg_curpm = (PMOP*)NULL;
8343 PL_reg_oldsaved = Nullch;
8344 PL_reg_oldsavedlen = 0;
8345 PL_reg_maxiter = 0;
8346 PL_reg_leftiter = 0;
8347 PL_reg_poscache = Nullch;
8348 PL_reg_poscache_size= 0;
8349
8350 /* RE engine - function pointers */
8351 PL_regcompp = proto_perl->Tregcompp;
8352 PL_regexecp = proto_perl->Tregexecp;
8353 PL_regint_start = proto_perl->Tregint_start;
8354 PL_regint_string = proto_perl->Tregint_string;
8355 PL_regfree = proto_perl->Tregfree;
8356
8357 PL_reginterp_cnt = 0;
8358 PL_reg_starttry = 0;
8359
8360#ifdef PERL_OBJECT
8361 return (PerlInterpreter*)pPerl;
8362#else
8363 return my_perl;
8364#endif
8365}
8366
8367#else /* !USE_ITHREADS */
51371543
GS		 8368
8369#ifdef PERL_OBJECT
51371543
GS		 8370#include "XSUB.h"
8371#endif
8372
1d7c1841
GS		 8373#endif /* USE_ITHREADS */
8374
51371543
GS		 8375static void
8376do_report_used(pTHXo_ SV *sv)
8377{
8378 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 8379 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 8380 sv_dump(sv);
8381 }
8382}
8383
8384static void
8385do_clean_objs(pTHXo_ SV *sv)
8386{
8387 SV* rv;
8388
8389 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8390 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8b6e653b
HS		 8391 if (SvWEAKREF(sv)) {
8392 sv_del_backref(sv);
8393 SvWEAKREF_off(sv);
8394 SvRV(sv) = 0;
8395 } else {
8396 SvROK_off(sv);
8397 SvRV(sv) = 0;
8398 SvREFCNT_dec(rv);
8399 }
51371543
GS		 8400 }
8401
8402 /* XXX Might want to check arrays, etc. */
8403}
8404
8405#ifndef DISABLE_DESTRUCTOR_KLUDGE
8406static void
8407do_clean_named_objs(pTHXo_ SV *sv)
8408{
f472eb5c 8409 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 8410 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 8411 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8412 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8413 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8414 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 8415 {
8416 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8417 SvREFCNT_dec(sv);
8418 }
8419 }
8420}
8421#endif
8422
8423static void
8424do_clean_all(pTHXo_ SV *sv)
8425{
1d7c1841 8426 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 8427 SvFLAGS(sv) |= SVf_BREAK;
8428 SvREFCNT_dec(sv);
8429}
8af02333 8430
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