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[perl5.git] / sv.c
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a0d0e21e 1/* sv.c
79072805 2 *
3818b22b 3 * Copyright (c) 1991-2000, Larry Wall
79072805
LW		 4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
a0d0e21e
LW		 8 */
9
10/*
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
79072805
LW		 12 */
13
14#include "EXTERN.h"
864dbfa3 15#define PERL_IN_SV_C
79072805 16#include "perl.h"
79072805 17
51371543 18#define FCALL *f
6fc92669 19#define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
2c5424a7 20
51371543
GS		 21static void do_report_used(pTHXo_ SV *sv);
22static void do_clean_objs(pTHXo_ SV *sv);
23#ifndef DISABLE_DESTRUCTOR_KLUDGE
24static void do_clean_named_objs(pTHXo_ SV *sv);
25#endif
26static void do_clean_all(pTHXo_ SV *sv);
27
4561caa4
CS		 28/*
29 * "A time to plant, and a time to uproot what was planted..."
30 */
31
053fc874
GS		 32#define plant_SV(p) \
33 STMT_START { \
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
36 PL_sv_root = (p); \
37 --PL_sv_count; \
38 } STMT_END
a0d0e21e 39
fba3b22e 40/* sv_mutex must be held while calling uproot_SV() */
053fc874
GS		 41#define uproot_SV(p) \
42 STMT_START { \
43 (p) = PL_sv_root; \
44 PL_sv_root = (SV*)SvANY(p); \
45 ++PL_sv_count; \
46 } STMT_END
47
48#define new_SV(p) \
49 STMT_START { \
50 LOCK_SV_MUTEX; \
51 if (PL_sv_root) \
52 uproot_SV(p); \
53 else \
54 (p) = more_sv(); \
55 UNLOCK_SV_MUTEX; \
56 SvANY(p) = 0; \
57 SvREFCNT(p) = 1; \
58 SvFLAGS(p) = 0; \
59 } STMT_END
463ee0b2 60
a0d0e21e 61#ifdef DEBUGGING
4561caa4 62
053fc874
GS		 63#define del_SV(p) \
64 STMT_START { \
65 LOCK_SV_MUTEX; \
66 if (PL_debug & 32768) \
67 del_sv(p); \
68 else \
69 plant_SV(p); \
70 UNLOCK_SV_MUTEX; \
71 } STMT_END
a0d0e21e 72
76e3520e 73STATIC void
cea2e8a9 74S_del_sv(pTHX_ SV *p)
463ee0b2 75{
3280af22 76 if (PL_debug & 32768) {
4633a7c4 77 SV* sva;
a0d0e21e
LW		 78 SV* sv;
79 SV* svend;
80 int ok = 0;
3280af22 81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
4633a7c4
LW		 82 sv = sva + 1;
83 svend = &sva[SvREFCNT(sva)];
a0d0e21e
LW		 84 if (p >= sv && p < svend)
85 ok = 1;
86 }
87 if (!ok) {
0453d815
PM		 88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
1d7c1841
GS		 90 "Attempt to free non-arena SV: 0x%"UVxf,
91 PTR2UV(p));
a0d0e21e
LW		 92 return;
93 }
94 }
4561caa4 95 plant_SV(p);
463ee0b2 96}
a0d0e21e 97
4561caa4
CS		 98#else /* ! DEBUGGING */
99
100#define del_SV(p) plant_SV(p)
101
102#endif /* DEBUGGING */
463ee0b2 103
4633a7c4 104void
864dbfa3 105Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
463ee0b2 106{
4633a7c4 107 SV* sva = (SV*)ptr;
463ee0b2
LW		 108 register SV* sv;
109 register SV* svend;
14dd3ad8 110 Zero(ptr, size, char);
4633a7c4
LW		 111
112 /* The first SV in an arena isn't an SV. */
3280af22 113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
4633a7c4
LW		 114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
116
3280af22
NIS		 117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
4633a7c4
LW		 119
120 svend = &sva[SvREFCNT(sva) - 1];
121 sv = sva + 1;
463ee0b2 122 while (sv < svend) {
a0d0e21e 123 SvANY(sv) = (void *)(SV*)(sv + 1);
8990e307 124 SvFLAGS(sv) = SVTYPEMASK;
463ee0b2
LW		 125 sv++;
126 }
127 SvANY(sv) = 0;
4633a7c4
LW		 128 SvFLAGS(sv) = SVTYPEMASK;
129}
130
fba3b22e 131/* sv_mutex must be held while calling more_sv() */
76e3520e 132STATIC SV*
cea2e8a9 133S_more_sv(pTHX)
4633a7c4 134{
4561caa4
CS		 135 register SV* sv;
136
3280af22
NIS		 137 if (PL_nice_chunk) {
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
c07a80fd 140 }
1edc1566 141 else {
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
145 }
4561caa4
CS		 146 uproot_SV(sv);
147 return sv;
463ee0b2
LW		 148}
149
76e3520e 150STATIC void
cea2e8a9 151S_visit(pTHX_ SVFUNC_t f)
8990e307 152{
4633a7c4 153 SV* sva;
8990e307
LW		 154 SV* sv;
155 register SV* svend;
156
3280af22 157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
4633a7c4 158 svend = &sva[SvREFCNT(sva)];
4561caa4
CS		 159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
51371543 161 (FCALL)(aTHXo_ sv);
8990e307
LW		 162 }
163 }
164}
165
166void
864dbfa3 167Perl_sv_report_used(pTHX)
4561caa4 168{
0b94c7bb 169 visit(do_report_used);
4561caa4
CS		 170}
171
4561caa4 172void
864dbfa3 173Perl_sv_clean_objs(pTHX)
4561caa4 174{
3280af22 175 PL_in_clean_objs = TRUE;
0b94c7bb 176 visit(do_clean_objs);
4561caa4 177#ifndef DISABLE_DESTRUCTOR_KLUDGE
2d0f3c12 178 /* some barnacles may yet remain, clinging to typeglobs */
0b94c7bb 179 visit(do_clean_named_objs);
4561caa4 180#endif
3280af22 181 PL_in_clean_objs = FALSE;
4561caa4
CS		 182}
183
8990e307 184void
864dbfa3 185Perl_sv_clean_all(pTHX)
8990e307 186{
3280af22 187 PL_in_clean_all = TRUE;
0b94c7bb 188 visit(do_clean_all);
3280af22 189 PL_in_clean_all = FALSE;
8990e307 190}
463ee0b2 191
4633a7c4 192void
864dbfa3 193Perl_sv_free_arenas(pTHX)
4633a7c4
LW		 194{
195 SV* sva;
196 SV* svanext;
612f20c3 197 XPV *arena, *arenanext;
4633a7c4
LW		 198
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
201
3280af22 202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
4633a7c4
LW		 203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
206
207 if (!SvFAKE(sva))
1edc1566 208 Safefree((void *)sva);
4633a7c4 209 }
5f05dabc 210
612f20c3
GS		 211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
213 Safefree(arena);
214 }
215 PL_xiv_arenaroot = 0;
216
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
219 Safefree(arena);
220 }
221 PL_xnv_arenaroot = 0;
222
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
225 Safefree(arena);
226 }
227 PL_xrv_arenaroot = 0;
228
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
231 Safefree(arena);
232 }
233 PL_xpv_arenaroot = 0;
234
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
237 Safefree(arena);
238 }
239 PL_xpviv_arenaroot = 0;
240
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
243 Safefree(arena);
244 }
245 PL_xpvnv_arenaroot = 0;
246
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
249 Safefree(arena);
250 }
251 PL_xpvcv_arenaroot = 0;
252
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
255 Safefree(arena);
256 }
257 PL_xpvav_arenaroot = 0;
258
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
261 Safefree(arena);
262 }
263 PL_xpvhv_arenaroot = 0;
264
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
267 Safefree(arena);
268 }
269 PL_xpvmg_arenaroot = 0;
270
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
273 Safefree(arena);
274 }
275 PL_xpvlv_arenaroot = 0;
276
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
279 Safefree(arena);
280 }
281 PL_xpvbm_arenaroot = 0;
282
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
285 Safefree(arena);
286 }
287 PL_he_arenaroot = 0;
288
3280af22
NIS		 289 if (PL_nice_chunk)
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
293 PL_sv_arenaroot = 0;
294 PL_sv_root = 0;
4633a7c4
LW		 295}
296
1d7c1841
GS		 297void
298Perl_report_uninit(pTHX)
299{
300 if (PL_op)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
303 else
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
305}
306
76e3520e 307STATIC XPVIV*
cea2e8a9 308S_new_xiv(pTHX)
463ee0b2 309{
ea7c11a3 310 IV* xiv;
cbe51380
GS		 311 LOCK_SV_MUTEX;
312 if (!PL_xiv_root)
313 more_xiv();
314 xiv = PL_xiv_root;
315 /*
316 * See comment in more_xiv() -- RAM.
317 */
318 PL_xiv_root = *(IV**)xiv;
319 UNLOCK_SV_MUTEX;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
463ee0b2
LW		 321}
322
76e3520e 323STATIC void
cea2e8a9 324S_del_xiv(pTHX_ XPVIV *p)
463ee0b2 325{
23e6a22f 326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
cbe51380 327 LOCK_SV_MUTEX;
3280af22
NIS		 328 *(IV**)xiv = PL_xiv_root;
329 PL_xiv_root = xiv;
cbe51380 330 UNLOCK_SV_MUTEX;
463ee0b2
LW		 331}
332
cbe51380 333STATIC void
cea2e8a9 334S_more_xiv(pTHX)
463ee0b2 335{
ea7c11a3
SM		 336 register IV* xiv;
337 register IV* xivend;
8c52afec
IZ		 338 XPV* ptr;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
3280af22
NIS		 340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
a0d0e21e 342
ea7c11a3
SM		 343 xiv = (IV*) ptr;
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
3280af22 346 PL_xiv_root = xiv;
463ee0b2 347 while (xiv < xivend) {
ea7c11a3 348 *(IV**)xiv = (IV *)(xiv + 1);
463ee0b2
LW		 349 xiv++;
350 }
ea7c11a3 351 *(IV**)xiv = 0;
463ee0b2
LW		 352}
353
76e3520e 354STATIC XPVNV*
cea2e8a9 355S_new_xnv(pTHX)
463ee0b2 356{
65202027 357 NV* xnv;
cbe51380
GS		 358 LOCK_SV_MUTEX;
359 if (!PL_xnv_root)
360 more_xnv();
361 xnv = PL_xnv_root;
65202027 362 PL_xnv_root = *(NV**)xnv;
cbe51380
GS		 363 UNLOCK_SV_MUTEX;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
463ee0b2
LW		 365}
366
76e3520e 367STATIC void
cea2e8a9 368S_del_xnv(pTHX_ XPVNV *p)
463ee0b2 369{
65202027 370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
cbe51380 371 LOCK_SV_MUTEX;
65202027 372 *(NV**)xnv = PL_xnv_root;
3280af22 373 PL_xnv_root = xnv;
cbe51380 374 UNLOCK_SV_MUTEX;
463ee0b2
LW		 375}
376
cbe51380 377STATIC void
cea2e8a9 378S_more_xnv(pTHX)
463ee0b2 379{
65202027
DS		 380 register NV* xnv;
381 register NV* xnvend;
612f20c3
GS		 382 XPV *ptr;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
386
387 xnv = (NV*) ptr;
65202027
DS		 388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
3280af22 390 PL_xnv_root = xnv;
463ee0b2 391 while (xnv < xnvend) {
65202027 392 *(NV**)xnv = (NV*)(xnv + 1);
463ee0b2
LW		 393 xnv++;
394 }
65202027 395 *(NV**)xnv = 0;
463ee0b2
LW		 396}
397
76e3520e 398STATIC XRV*
cea2e8a9 399S_new_xrv(pTHX)
ed6116ce
LW		 400{
401 XRV* xrv;
cbe51380
GS		 402 LOCK_SV_MUTEX;
403 if (!PL_xrv_root)
404 more_xrv();
405 xrv = PL_xrv_root;
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
407 UNLOCK_SV_MUTEX;
408 return xrv;
ed6116ce
LW		 409}
410
76e3520e 411STATIC void
cea2e8a9 412S_del_xrv(pTHX_ XRV *p)
ed6116ce 413{
cbe51380 414 LOCK_SV_MUTEX;
3280af22
NIS		 415 p->xrv_rv = (SV*)PL_xrv_root;
416 PL_xrv_root = p;
cbe51380 417 UNLOCK_SV_MUTEX;
ed6116ce
LW		 418}
419
cbe51380 420STATIC void
cea2e8a9 421S_more_xrv(pTHX)
ed6116ce 422{
ed6116ce
LW		 423 register XRV* xrv;
424 register XRV* xrvend;
612f20c3
GS		 425 XPV *ptr;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
429
430 xrv = (XRV*) ptr;
ed6116ce 431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
612f20c3
GS		 432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
433 PL_xrv_root = xrv;
ed6116ce
LW		 434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
436 xrv++;
437 }
438 xrv->xrv_rv = 0;
ed6116ce
LW		 439}
440
76e3520e 441STATIC XPV*
cea2e8a9 442S_new_xpv(pTHX)
463ee0b2
LW		 443{
444 XPV* xpv;
cbe51380
GS		 445 LOCK_SV_MUTEX;
446 if (!PL_xpv_root)
447 more_xpv();
448 xpv = PL_xpv_root;
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
450 UNLOCK_SV_MUTEX;
451 return xpv;
463ee0b2
LW		 452}
453
76e3520e 454STATIC void
cea2e8a9 455S_del_xpv(pTHX_ XPV *p)
463ee0b2 456{
cbe51380 457 LOCK_SV_MUTEX;
3280af22
NIS		 458 p->xpv_pv = (char*)PL_xpv_root;
459 PL_xpv_root = p;
cbe51380 460 UNLOCK_SV_MUTEX;
463ee0b2
LW		 461}
462
cbe51380 463STATIC void
cea2e8a9 464S_more_xpv(pTHX)
463ee0b2 465{
463ee0b2
LW		 466 register XPV* xpv;
467 register XPV* xpvend;
612f20c3
GS		 468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
471
463ee0b2 472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
612f20c3 473 PL_xpv_root = ++xpv;
463ee0b2
LW		 474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
476 xpv++;
477 }
478 xpv->xpv_pv = 0;
463ee0b2
LW		 479}
480
932e9ff9
VB		 481STATIC XPVIV*
482S_new_xpviv(pTHX)
483{
484 XPVIV* xpviv;
485 LOCK_SV_MUTEX;
486 if (!PL_xpviv_root)
487 more_xpviv();
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
490 UNLOCK_SV_MUTEX;
491 return xpviv;
492}
493
494STATIC void
495S_del_xpviv(pTHX_ XPVIV *p)
496{
497 LOCK_SV_MUTEX;
498 p->xpv_pv = (char*)PL_xpviv_root;
499 PL_xpviv_root = p;
500 UNLOCK_SV_MUTEX;
501}
502
932e9ff9
VB		 503STATIC void
504S_more_xpviv(pTHX)
505{
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
612f20c3
GS		 508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
511
932e9ff9 512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
612f20c3 513 PL_xpviv_root = ++xpviv;
932e9ff9
VB		 514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
516 xpviv++;
517 }
518 xpviv->xpv_pv = 0;
519}
520
932e9ff9
VB		 521STATIC XPVNV*
522S_new_xpvnv(pTHX)
523{
524 XPVNV* xpvnv;
525 LOCK_SV_MUTEX;
526 if (!PL_xpvnv_root)
527 more_xpvnv();
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
530 UNLOCK_SV_MUTEX;
531 return xpvnv;
532}
533
534STATIC void
535S_del_xpvnv(pTHX_ XPVNV *p)
536{
537 LOCK_SV_MUTEX;
538 p->xpv_pv = (char*)PL_xpvnv_root;
539 PL_xpvnv_root = p;
540 UNLOCK_SV_MUTEX;
541}
542
932e9ff9
VB		 543STATIC void
544S_more_xpvnv(pTHX)
545{
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
612f20c3
GS		 548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
551
932e9ff9 552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
612f20c3 553 PL_xpvnv_root = ++xpvnv;
932e9ff9
VB		 554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
556 xpvnv++;
557 }
558 xpvnv->xpv_pv = 0;
559}
560
932e9ff9
VB		 561STATIC XPVCV*
562S_new_xpvcv(pTHX)
563{
564 XPVCV* xpvcv;
565 LOCK_SV_MUTEX;
566 if (!PL_xpvcv_root)
567 more_xpvcv();
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
570 UNLOCK_SV_MUTEX;
571 return xpvcv;
572}
573
574STATIC void
575S_del_xpvcv(pTHX_ XPVCV *p)
576{
577 LOCK_SV_MUTEX;
578 p->xpv_pv = (char*)PL_xpvcv_root;
579 PL_xpvcv_root = p;
580 UNLOCK_SV_MUTEX;
581}
582
932e9ff9
VB		 583STATIC void
584S_more_xpvcv(pTHX)
585{
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
612f20c3
GS		 588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
591
932e9ff9 592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
612f20c3 593 PL_xpvcv_root = ++xpvcv;
932e9ff9
VB		 594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
596 xpvcv++;
597 }
598 xpvcv->xpv_pv = 0;
599}
600
932e9ff9
VB		 601STATIC XPVAV*
602S_new_xpvav(pTHX)
603{
604 XPVAV* xpvav;
605 LOCK_SV_MUTEX;
606 if (!PL_xpvav_root)
607 more_xpvav();
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
610 UNLOCK_SV_MUTEX;
611 return xpvav;
612}
613
614STATIC void
615S_del_xpvav(pTHX_ XPVAV *p)
616{
617 LOCK_SV_MUTEX;
618 p->xav_array = (char*)PL_xpvav_root;
619 PL_xpvav_root = p;
620 UNLOCK_SV_MUTEX;
621}
622
932e9ff9
VB		 623STATIC void
624S_more_xpvav(pTHX)
625{
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
612f20c3
GS		 628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
631
932e9ff9 632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
612f20c3 633 PL_xpvav_root = ++xpvav;
932e9ff9
VB		 634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
636 xpvav++;
637 }
638 xpvav->xav_array = 0;
639}
640
932e9ff9
VB		 641STATIC XPVHV*
642S_new_xpvhv(pTHX)
643{
644 XPVHV* xpvhv;
645 LOCK_SV_MUTEX;
646 if (!PL_xpvhv_root)
647 more_xpvhv();
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
650 UNLOCK_SV_MUTEX;
651 return xpvhv;
652}
653
654STATIC void
655S_del_xpvhv(pTHX_ XPVHV *p)
656{
657 LOCK_SV_MUTEX;
658 p->xhv_array = (char*)PL_xpvhv_root;
659 PL_xpvhv_root = p;
660 UNLOCK_SV_MUTEX;
661}
662
932e9ff9
VB		 663STATIC void
664S_more_xpvhv(pTHX)
665{
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
612f20c3
GS		 668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
671
932e9ff9 672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
612f20c3 673 PL_xpvhv_root = ++xpvhv;
932e9ff9
VB		 674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
676 xpvhv++;
677 }
678 xpvhv->xhv_array = 0;
679}
680
932e9ff9
VB		 681STATIC XPVMG*
682S_new_xpvmg(pTHX)
683{
684 XPVMG* xpvmg;
685 LOCK_SV_MUTEX;
686 if (!PL_xpvmg_root)
687 more_xpvmg();
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
690 UNLOCK_SV_MUTEX;
691 return xpvmg;
692}
693
694STATIC void
695S_del_xpvmg(pTHX_ XPVMG *p)
696{
697 LOCK_SV_MUTEX;
698 p->xpv_pv = (char*)PL_xpvmg_root;
699 PL_xpvmg_root = p;
700 UNLOCK_SV_MUTEX;
701}
702
932e9ff9
VB		 703STATIC void
704S_more_xpvmg(pTHX)
705{
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
612f20c3
GS		 708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
711
932e9ff9 712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
612f20c3 713 PL_xpvmg_root = ++xpvmg;
932e9ff9
VB		 714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
716 xpvmg++;
717 }
718 xpvmg->xpv_pv = 0;
719}
720
932e9ff9
VB		 721STATIC XPVLV*
722S_new_xpvlv(pTHX)
723{
724 XPVLV* xpvlv;
725 LOCK_SV_MUTEX;
726 if (!PL_xpvlv_root)
727 more_xpvlv();
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
730 UNLOCK_SV_MUTEX;
731 return xpvlv;
732}
733
734STATIC void
735S_del_xpvlv(pTHX_ XPVLV *p)
736{
737 LOCK_SV_MUTEX;
738 p->xpv_pv = (char*)PL_xpvlv_root;
739 PL_xpvlv_root = p;
740 UNLOCK_SV_MUTEX;
741}
742
932e9ff9
VB		 743STATIC void
744S_more_xpvlv(pTHX)
745{
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
612f20c3
GS		 748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
751
932e9ff9 752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
612f20c3 753 PL_xpvlv_root = ++xpvlv;
932e9ff9
VB		 754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
756 xpvlv++;
757 }
758 xpvlv->xpv_pv = 0;
759}
760
932e9ff9
VB		 761STATIC XPVBM*
762S_new_xpvbm(pTHX)
763{
764 XPVBM* xpvbm;
765 LOCK_SV_MUTEX;
766 if (!PL_xpvbm_root)
767 more_xpvbm();
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
770 UNLOCK_SV_MUTEX;
771 return xpvbm;
772}
773
774STATIC void
775S_del_xpvbm(pTHX_ XPVBM *p)
776{
777 LOCK_SV_MUTEX;
778 p->xpv_pv = (char*)PL_xpvbm_root;
779 PL_xpvbm_root = p;
780 UNLOCK_SV_MUTEX;
781}
782
932e9ff9
VB		 783STATIC void
784S_more_xpvbm(pTHX)
785{
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
612f20c3
GS		 788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
791
932e9ff9 792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
612f20c3 793 PL_xpvbm_root = ++xpvbm;
932e9ff9
VB		 794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
796 xpvbm++;
797 }
798 xpvbm->xpv_pv = 0;
799}
800
d33b2eba
GS		 801#ifdef LEAKTEST
802# define my_safemalloc(s) (void*)safexmalloc(717,s)
803# define my_safefree(p) safexfree((char*)p)
804#else
805# define my_safemalloc(s) (void*)safemalloc(s)
806# define my_safefree(p) safefree((char*)p)
807#endif
463ee0b2 808
d33b2eba 809#ifdef PURIFY
463ee0b2 810
d33b2eba
GS		 811#define new_XIV() my_safemalloc(sizeof(XPVIV))
812#define del_XIV(p) my_safefree(p)
ed6116ce 813
d33b2eba
GS		 814#define new_XNV() my_safemalloc(sizeof(XPVNV))
815#define del_XNV(p) my_safefree(p)
463ee0b2 816
d33b2eba
GS		 817#define new_XRV() my_safemalloc(sizeof(XRV))
818#define del_XRV(p) my_safefree(p)
8c52afec 819
d33b2eba
GS		 820#define new_XPV() my_safemalloc(sizeof(XPV))
821#define del_XPV(p) my_safefree(p)
9b94d1dd 822
d33b2eba
GS		 823#define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824#define del_XPVIV(p) my_safefree(p)
932e9ff9 825
d33b2eba
GS		 826#define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827#define del_XPVNV(p) my_safefree(p)
932e9ff9 828
d33b2eba
GS		 829#define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830#define del_XPVCV(p) my_safefree(p)
932e9ff9 831
d33b2eba
GS		 832#define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833#define del_XPVAV(p) my_safefree(p)
834
835#define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836#define del_XPVHV(p) my_safefree(p)
1c846c1f 837
d33b2eba
GS		 838#define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839#define del_XPVMG(p) my_safefree(p)
840
841#define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842#define del_XPVLV(p) my_safefree(p)
843
844#define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845#define del_XPVBM(p) my_safefree(p)
846
847#else /* !PURIFY */
848
849#define new_XIV() (void*)new_xiv()
850#define del_XIV(p) del_xiv((XPVIV*) p)
851
852#define new_XNV() (void*)new_xnv()
853#define del_XNV(p) del_xnv((XPVNV*) p)
9b94d1dd 854
d33b2eba
GS		 855#define new_XRV() (void*)new_xrv()
856#define del_XRV(p) del_xrv((XRV*) p)
9b94d1dd 857
d33b2eba
GS		 858#define new_XPV() (void*)new_xpv()
859#define del_XPV(p) del_xpv((XPV *)p)
860
861#define new_XPVIV() (void*)new_xpviv()
862#define del_XPVIV(p) del_xpviv((XPVIV *)p)
863
864#define new_XPVNV() (void*)new_xpvnv()
865#define del_XPVNV(p) del_xpvnv((XPVNV *)p)
866
867#define new_XPVCV() (void*)new_xpvcv()
868#define del_XPVCV(p) del_xpvcv((XPVCV *)p)
869
870#define new_XPVAV() (void*)new_xpvav()
871#define del_XPVAV(p) del_xpvav((XPVAV *)p)
872
873#define new_XPVHV() (void*)new_xpvhv()
874#define del_XPVHV(p) del_xpvhv((XPVHV *)p)
1c846c1f 875
d33b2eba
GS		 876#define new_XPVMG() (void*)new_xpvmg()
877#define del_XPVMG(p) del_xpvmg((XPVMG *)p)
878
879#define new_XPVLV() (void*)new_xpvlv()
880#define del_XPVLV(p) del_xpvlv((XPVLV *)p)
881
882#define new_XPVBM() (void*)new_xpvbm()
883#define del_XPVBM(p) del_xpvbm((XPVBM *)p)
884
885#endif /* PURIFY */
9b94d1dd 886
d33b2eba
GS		 887#define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888#define del_XPVGV(p) my_safefree(p)
1c846c1f 889
d33b2eba
GS		 890#define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891#define del_XPVFM(p) my_safefree(p)
1c846c1f 892
d33b2eba
GS		 893#define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894#define del_XPVIO(p) my_safefree(p)
8990e307 895
954c1994
GS		 896/*
897=for apidoc sv_upgrade
898
899Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
900C<svtype>.
901
902=cut
903*/
904
79072805 905bool
864dbfa3 906Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
79072805
LW		 907{
908 char* pv;
909 U32 cur;
910 U32 len;
a0d0e21e 911 IV iv;
65202027 912 NV nv;
79072805
LW		 913 MAGIC* magic;
914 HV* stash;
915
f130fd45
NIS		 916 if (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
917 sv_force_normal(sv);
918 }
919
79072805
LW		 920 if (SvTYPE(sv) == mt)
921 return TRUE;
922
a5f75d66
AD		 923 if (mt < SVt_PVIV)
924 (void)SvOOK_off(sv);
925
79072805
LW		 926 switch (SvTYPE(sv)) {
927 case SVt_NULL:
928 pv = 0;
929 cur = 0;
930 len = 0;
931 iv = 0;
932 nv = 0.0;
933 magic = 0;
934 stash = 0;
935 break;
79072805
LW		 936 case SVt_IV:
937 pv = 0;
938 cur = 0;
939 len = 0;
463ee0b2 940 iv = SvIVX(sv);
65202027 941 nv = (NV)SvIVX(sv);
79072805
LW		 942 del_XIV(SvANY(sv));
943 magic = 0;
944 stash = 0;
ed6116ce 945 if (mt == SVt_NV)
463ee0b2 946 mt = SVt_PVNV;
ed6116ce
LW		 947 else if (mt < SVt_PVIV)
948 mt = SVt_PVIV;
79072805
LW		 949 break;
950 case SVt_NV:
951 pv = 0;
952 cur = 0;
953 len = 0;
463ee0b2 954 nv = SvNVX(sv);
1bd302c3 955 iv = I_V(nv);
79072805
LW		 956 magic = 0;
957 stash = 0;
958 del_XNV(SvANY(sv));
959 SvANY(sv) = 0;
ed6116ce 960 if (mt < SVt_PVNV)
79072805
LW		 961 mt = SVt_PVNV;
962 break;
ed6116ce
LW		 963 case SVt_RV:
964 pv = (char*)SvRV(sv);
965 cur = 0;
966 len = 0;
56431972
RB		 967 iv = PTR2IV(pv);
968 nv = PTR2NV(pv);
ed6116ce
LW		 969 del_XRV(SvANY(sv));
970 magic = 0;
971 stash = 0;
972 break;
79072805 973 case SVt_PV:
463ee0b2 974 pv = SvPVX(sv);
79072805
LW		 975 cur = SvCUR(sv);
976 len = SvLEN(sv);
977 iv = 0;
978 nv = 0.0;
979 magic = 0;
980 stash = 0;
981 del_XPV(SvANY(sv));
748a9306
LW		 982 if (mt <= SVt_IV)
983 mt = SVt_PVIV;
984 else if (mt == SVt_NV)
985 mt = SVt_PVNV;
79072805
LW		 986 break;
987 case SVt_PVIV:
463ee0b2 988 pv = SvPVX(sv);
79072805
LW		 989 cur = SvCUR(sv);
990 len = SvLEN(sv);
463ee0b2 991 iv = SvIVX(sv);
79072805
LW		 992 nv = 0.0;
993 magic = 0;
994 stash = 0;
995 del_XPVIV(SvANY(sv));
996 break;
997 case SVt_PVNV:
463ee0b2 998 pv = SvPVX(sv);
79072805
LW		 999 cur = SvCUR(sv);
1000 len = SvLEN(sv);
463ee0b2
LW		 1001 iv = SvIVX(sv);
1002 nv = SvNVX(sv);
79072805
LW		 1003 magic = 0;
1004 stash = 0;
1005 del_XPVNV(SvANY(sv));
1006 break;
1007 case SVt_PVMG:
463ee0b2 1008 pv = SvPVX(sv);
79072805
LW		 1009 cur = SvCUR(sv);
1010 len = SvLEN(sv);
463ee0b2
LW		 1011 iv = SvIVX(sv);
1012 nv = SvNVX(sv);
79072805
LW		 1013 magic = SvMAGIC(sv);
1014 stash = SvSTASH(sv);
1015 del_XPVMG(SvANY(sv));
1016 break;
1017 default:
cea2e8a9 1018 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
79072805
LW		 1019 }
1020
1021 switch (mt) {
1022 case SVt_NULL:
cea2e8a9 1023 Perl_croak(aTHX_ "Can't upgrade to undef");
79072805
LW		 1024 case SVt_IV:
1025 SvANY(sv) = new_XIV();
463ee0b2 1026 SvIVX(sv) = iv;
79072805
LW		 1027 break;
1028 case SVt_NV:
1029 SvANY(sv) = new_XNV();
463ee0b2 1030 SvNVX(sv) = nv;
79072805 1031 break;
ed6116ce
LW		 1032 case SVt_RV:
1033 SvANY(sv) = new_XRV();
1034 SvRV(sv) = (SV*)pv;
ed6116ce 1035 break;
79072805
LW		 1036 case SVt_PV:
1037 SvANY(sv) = new_XPV();
463ee0b2 1038 SvPVX(sv) = pv;
79072805
LW		 1039 SvCUR(sv) = cur;
1040 SvLEN(sv) = len;
1041 break;
1042 case SVt_PVIV:
1043 SvANY(sv) = new_XPVIV();
463ee0b2 1044 SvPVX(sv) = pv;
79072805
LW		 1045 SvCUR(sv) = cur;
1046 SvLEN(sv) = len;
463ee0b2 1047 SvIVX(sv) = iv;
79072805 1048 if (SvNIOK(sv))
a0d0e21e 1049 (void)SvIOK_on(sv);
79072805
LW		 1050 SvNOK_off(sv);
1051 break;
1052 case SVt_PVNV:
1053 SvANY(sv) = new_XPVNV();
463ee0b2 1054 SvPVX(sv) = pv;
79072805
LW		 1055 SvCUR(sv) = cur;
1056 SvLEN(sv) = len;
463ee0b2
LW		 1057 SvIVX(sv) = iv;
1058 SvNVX(sv) = nv;
79072805
LW		 1059 break;
1060 case SVt_PVMG:
1061 SvANY(sv) = new_XPVMG();
463ee0b2 1062 SvPVX(sv) = pv;
79072805
LW		 1063 SvCUR(sv) = cur;
1064 SvLEN(sv) = len;
463ee0b2
LW		 1065 SvIVX(sv) = iv;
1066 SvNVX(sv) = nv;
79072805
LW		 1067 SvMAGIC(sv) = magic;
1068 SvSTASH(sv) = stash;
1069 break;
1070 case SVt_PVLV:
1071 SvANY(sv) = new_XPVLV();
463ee0b2 1072 SvPVX(sv) = pv;
79072805
LW		 1073 SvCUR(sv) = cur;
1074 SvLEN(sv) = len;
463ee0b2
LW		 1075 SvIVX(sv) = iv;
1076 SvNVX(sv) = nv;
79072805
LW		 1077 SvMAGIC(sv) = magic;
1078 SvSTASH(sv) = stash;
1079 LvTARGOFF(sv) = 0;
1080 LvTARGLEN(sv) = 0;
1081 LvTARG(sv) = 0;
1082 LvTYPE(sv) = 0;
1083 break;
1084 case SVt_PVAV:
1085 SvANY(sv) = new_XPVAV();
463ee0b2
LW		 1086 if (pv)
1087 Safefree(pv);
2304df62 1088 SvPVX(sv) = 0;
d1bf51dd 1089 AvMAX(sv) = -1;
93965878 1090 AvFILLp(sv) = -1;
463ee0b2
LW		 1091 SvIVX(sv) = 0;
1092 SvNVX(sv) = 0.0;
1093 SvMAGIC(sv) = magic;
1094 SvSTASH(sv) = stash;
1095 AvALLOC(sv) = 0;
79072805
LW		 1096 AvARYLEN(sv) = 0;
1097 AvFLAGS(sv) = 0;
1098 break;
1099 case SVt_PVHV:
1100 SvANY(sv) = new_XPVHV();
463ee0b2
LW		 1101 if (pv)
1102 Safefree(pv);
1103 SvPVX(sv) = 0;
1104 HvFILL(sv) = 0;
1105 HvMAX(sv) = 0;
1106 HvKEYS(sv) = 0;
1107 SvNVX(sv) = 0.0;
79072805
LW		 1108 SvMAGIC(sv) = magic;
1109 SvSTASH(sv) = stash;
79072805
LW		 1110 HvRITER(sv) = 0;
1111 HvEITER(sv) = 0;
1112 HvPMROOT(sv) = 0;
1113 HvNAME(sv) = 0;
79072805
LW		 1114 break;
1115 case SVt_PVCV:
1116 SvANY(sv) = new_XPVCV();
748a9306 1117 Zero(SvANY(sv), 1, XPVCV);
463ee0b2 1118 SvPVX(sv) = pv;
79072805
LW		 1119 SvCUR(sv) = cur;
1120 SvLEN(sv) = len;
463ee0b2
LW		 1121 SvIVX(sv) = iv;
1122 SvNVX(sv) = nv;
79072805
LW		 1123 SvMAGIC(sv) = magic;
1124 SvSTASH(sv) = stash;
79072805
LW		 1125 break;
1126 case SVt_PVGV:
1127 SvANY(sv) = new_XPVGV();
463ee0b2 1128 SvPVX(sv) = pv;
79072805
LW		 1129 SvCUR(sv) = cur;
1130 SvLEN(sv) = len;
463ee0b2
LW		 1131 SvIVX(sv) = iv;
1132 SvNVX(sv) = nv;
79072805
LW		 1133 SvMAGIC(sv) = magic;
1134 SvSTASH(sv) = stash;
93a17b20 1135 GvGP(sv) = 0;
79072805
LW		 1136 GvNAME(sv) = 0;
1137 GvNAMELEN(sv) = 0;
1138 GvSTASH(sv) = 0;
a5f75d66 1139 GvFLAGS(sv) = 0;
79072805
LW		 1140 break;
1141 case SVt_PVBM:
1142 SvANY(sv) = new_XPVBM();
463ee0b2 1143 SvPVX(sv) = pv;
79072805
LW		 1144 SvCUR(sv) = cur;
1145 SvLEN(sv) = len;
463ee0b2
LW		 1146 SvIVX(sv) = iv;
1147 SvNVX(sv) = nv;
79072805
LW		 1148 SvMAGIC(sv) = magic;
1149 SvSTASH(sv) = stash;
1150 BmRARE(sv) = 0;
1151 BmUSEFUL(sv) = 0;
1152 BmPREVIOUS(sv) = 0;
1153 break;
1154 case SVt_PVFM:
1155 SvANY(sv) = new_XPVFM();
748a9306 1156 Zero(SvANY(sv), 1, XPVFM);
463ee0b2 1157 SvPVX(sv) = pv;
79072805
LW		 1158 SvCUR(sv) = cur;
1159 SvLEN(sv) = len;
463ee0b2
LW		 1160 SvIVX(sv) = iv;
1161 SvNVX(sv) = nv;
79072805
LW		 1162 SvMAGIC(sv) = magic;
1163 SvSTASH(sv) = stash;
79072805 1164 break;
8990e307
LW		 1165 case SVt_PVIO:
1166 SvANY(sv) = new_XPVIO();
748a9306 1167 Zero(SvANY(sv), 1, XPVIO);
8990e307
LW		 1168 SvPVX(sv) = pv;
1169 SvCUR(sv) = cur;
1170 SvLEN(sv) = len;
1171 SvIVX(sv) = iv;
1172 SvNVX(sv) = nv;
1173 SvMAGIC(sv) = magic;
1174 SvSTASH(sv) = stash;
85e6fe83 1175 IoPAGE_LEN(sv) = 60;
8990e307
LW		 1176 break;
1177 }
1178 SvFLAGS(sv) &= ~SVTYPEMASK;
1179 SvFLAGS(sv) |= mt;
79072805
LW		 1180 return TRUE;
1181}
1182
79072805 1183int
864dbfa3 1184Perl_sv_backoff(pTHX_ register SV *sv)
79072805
LW		 1185{
1186 assert(SvOOK(sv));
463ee0b2
LW		 1187 if (SvIVX(sv)) {
1188 char *s = SvPVX(sv);
1189 SvLEN(sv) += SvIVX(sv);
1190 SvPVX(sv) -= SvIVX(sv);
79072805 1191 SvIV_set(sv, 0);
463ee0b2 1192 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
79072805
LW		 1193 }
1194 SvFLAGS(sv) &= ~SVf_OOK;
a0d0e21e 1195 return 0;
79072805
LW		 1196}
1197
954c1994
GS		 1198/*
1199=for apidoc sv_grow
1200
1201Expands the character buffer in the SV. This will use C<sv_unref> and will
1202upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1203Use C<SvGROW>.
1204
1205=cut
1206*/
1207
79072805 1208char *
864dbfa3 1209Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
79072805
LW		 1210{
1211 register char *s;
1212
55497cff 1213#ifdef HAS_64K_LIMIT
79072805 1214 if (newlen >= 0x10000) {
1d7c1841
GS		 1215 PerlIO_printf(Perl_debug_log,
1216 "Allocation too large: %"UVxf"\n", (UV)newlen);
79072805
LW		 1217 my_exit(1);
1218 }
55497cff 1219#endif /* HAS_64K_LIMIT */
a0d0e21e
LW		 1220 if (SvROK(sv))
1221 sv_unref(sv);
79072805
LW		 1222 if (SvTYPE(sv) < SVt_PV) {
1223 sv_upgrade(sv, SVt_PV);
463ee0b2 1224 s = SvPVX(sv);
79072805
LW		 1225 }
1226 else if (SvOOK(sv)) { /* pv is offset? */
1227 sv_backoff(sv);
463ee0b2 1228 s = SvPVX(sv);
79072805
LW		 1229 if (newlen > SvLEN(sv))
1230 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
c6f8c383
GA		 1231#ifdef HAS_64K_LIMIT
1232 if (newlen >= 0x10000)
1233 newlen = 0xFFFF;
1234#endif
79072805
LW		 1235 }
1236 else
463ee0b2 1237 s = SvPVX(sv);
79072805 1238 if (newlen > SvLEN(sv)) { /* need more room? */
8d6dde3e 1239 if (SvLEN(sv) && s) {
f5a32c7f 1240#if defined(MYMALLOC) && !defined(LEAKTEST)
8d6dde3e
IZ		 1241 STRLEN l = malloced_size((void*)SvPVX(sv));
1242 if (newlen <= l) {
1243 SvLEN_set(sv, l);
1244 return s;
1245 } else
c70c8a0a 1246#endif
79072805 1247 Renew(s,newlen,char);
8d6dde3e 1248 }
79072805
LW		 1249 else
1250 New(703,s,newlen,char);
1251 SvPV_set(sv, s);
1252 SvLEN_set(sv, newlen);
1253 }
1254 return s;
1255}
1256
954c1994
GS		 1257/*
1258=for apidoc sv_setiv
1259
1260Copies an integer into the given SV. Does not handle 'set' magic. See
1261C<sv_setiv_mg>.
1262
1263=cut
1264*/
1265
79072805 1266void
864dbfa3 1267Perl_sv_setiv(pTHX_ register SV *sv, IV i)
79072805 1268{
2213622d 1269 SV_CHECK_THINKFIRST(sv);
463ee0b2
LW		 1270 switch (SvTYPE(sv)) {
1271 case SVt_NULL:
79072805 1272 sv_upgrade(sv, SVt_IV);
463ee0b2
LW		 1273 break;
1274 case SVt_NV:
1275 sv_upgrade(sv, SVt_PVNV);
1276 break;
ed6116ce 1277 case SVt_RV:
463ee0b2 1278 case SVt_PV:
79072805 1279 sv_upgrade(sv, SVt_PVIV);
463ee0b2 1280 break;
a0d0e21e
LW		 1281
1282 case SVt_PVGV:
a0d0e21e
LW		 1283 case SVt_PVAV:
1284 case SVt_PVHV:
1285 case SVt_PVCV:
1286 case SVt_PVFM:
1287 case SVt_PVIO:
11343788
MB		 1288 {
1289 dTHR;
cea2e8a9 1290 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
22c35a8c 1291 PL_op_desc[PL_op->op_type]);
11343788 1292 }
463ee0b2 1293 }
a0d0e21e 1294 (void)SvIOK_only(sv); /* validate number */
a5f75d66 1295 SvIVX(sv) = i;
463ee0b2 1296 SvTAINT(sv);
79072805
LW		 1297}
1298
954c1994
GS		 1299/*
1300=for apidoc sv_setiv_mg
1301
1302Like C<sv_setiv>, but also handles 'set' magic.
1303
1304=cut
1305*/
1306
79072805 1307void
864dbfa3 1308Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
ef50df4b
GS		 1309{
1310 sv_setiv(sv,i);
1311 SvSETMAGIC(sv);
1312}
1313
954c1994
GS		 1314/*
1315=for apidoc sv_setuv
1316
1317Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1318See C<sv_setuv_mg>.
1319
1320=cut
1321*/
1322
ef50df4b 1323void
864dbfa3 1324Perl_sv_setuv(pTHX_ register SV *sv, UV u)
55497cff 1325{
25da4f38
IZ		 1326 sv_setiv(sv, 0);
1327 SvIsUV_on(sv);
1328 SvUVX(sv) = u;
55497cff 1329}
1330
954c1994
GS		 1331/*
1332=for apidoc sv_setuv_mg
1333
1334Like C<sv_setuv>, but also handles 'set' magic.
1335
1336=cut
1337*/
1338
55497cff 1339void
864dbfa3 1340Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
ef50df4b
GS		 1341{
1342 sv_setuv(sv,u);
1343 SvSETMAGIC(sv);
1344}
1345
954c1994
GS		 1346/*
1347=for apidoc sv_setnv
1348
1349Copies a double into the given SV. Does not handle 'set' magic. See
1350C<sv_setnv_mg>.
1351
1352=cut
1353*/
1354
ef50df4b 1355void
65202027 1356Perl_sv_setnv(pTHX_ register SV *sv, NV num)
79072805 1357{
2213622d 1358 SV_CHECK_THINKFIRST(sv);
a0d0e21e
LW		 1359 switch (SvTYPE(sv)) {
1360 case SVt_NULL:
1361 case SVt_IV:
79072805 1362 sv_upgrade(sv, SVt_NV);
a0d0e21e 1363 break;
a0d0e21e
LW		 1364 case SVt_RV:
1365 case SVt_PV:
1366 case SVt_PVIV:
79072805 1367 sv_upgrade(sv, SVt_PVNV);
a0d0e21e 1368 break;
827b7e14 1369
a0d0e21e 1370 case SVt_PVGV:
a0d0e21e
LW		 1371 case SVt_PVAV:
1372 case SVt_PVHV:
1373 case SVt_PVCV:
1374 case SVt_PVFM:
1375 case SVt_PVIO:
11343788
MB		 1376 {
1377 dTHR;
cea2e8a9 1378 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
22c35a8c 1379 PL_op_name[PL_op->op_type]);
11343788 1380 }
79072805 1381 }
463ee0b2 1382 SvNVX(sv) = num;
a0d0e21e 1383 (void)SvNOK_only(sv); /* validate number */
463ee0b2 1384 SvTAINT(sv);
79072805
LW		 1385}
1386
954c1994
GS		 1387/*
1388=for apidoc sv_setnv_mg
1389
1390Like C<sv_setnv>, but also handles 'set' magic.
1391
1392=cut
1393*/
1394
ef50df4b 1395void
65202027 1396Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
ef50df4b
GS		 1397{
1398 sv_setnv(sv,num);
1399 SvSETMAGIC(sv);
1400}
1401
76e3520e 1402STATIC void
cea2e8a9 1403S_not_a_number(pTHX_ SV *sv)
a0d0e21e 1404{
11343788 1405 dTHR;
a0d0e21e
LW		 1406 char tmpbuf[64];
1407 char *d = tmpbuf;
1408 char *s;
dc28f22b
GA		 1409 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1410 /* each *s can expand to 4 chars + "...\0",
1411 i.e. need room for 8 chars */
a0d0e21e 1412
dc28f22b 1413 for (s = SvPVX(sv); *s && d < limit; s++) {
bbce6d69 1414 int ch = *s & 0xFF;
1415 if (ch & 128 && !isPRINT_LC(ch)) {
a0d0e21e
LW		 1416 *d++ = 'M';
1417 *d++ = '-';
1418 ch &= 127;
1419 }
bbce6d69 1420 if (ch == '\n') {
1421 *d++ = '\\';
1422 *d++ = 'n';
1423 }
1424 else if (ch == '\r') {
1425 *d++ = '\\';
1426 *d++ = 'r';
1427 }
1428 else if (ch == '\f') {
1429 *d++ = '\\';
1430 *d++ = 'f';
1431 }
1432 else if (ch == '\\') {
1433 *d++ = '\\';
1434 *d++ = '\\';
1435 }
1436 else if (isPRINT_LC(ch))
a0d0e21e
LW		 1437 *d++ = ch;
1438 else {
1439 *d++ = '^';
bbce6d69 1440 *d++ = toCTRL(ch);
a0d0e21e
LW		 1441 }
1442 }
1443 if (*s) {
1444 *d++ = '.';
1445 *d++ = '.';
1446 *d++ = '.';
1447 }
1448 *d = '\0';
1449
533c011a 1450 if (PL_op)
42d38218
MS		 1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1453 PL_op_desc[PL_op->op_type]);
a0d0e21e 1454 else
42d38218
MS		 1455 Perl_warner(aTHX_ WARN_NUMERIC,
1456 "Argument \"%s\" isn't numeric", tmpbuf);
a0d0e21e
LW		 1457}
1458
cf2093f6 1459/* the number can be converted to integer with atol() or atoll() */
25da4f38
IZ		 1460#define IS_NUMBER_TO_INT_BY_ATOL 0x01
1461#define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1462#define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1463#define IS_NUMBER_NEG 0x08 /* not good to cache UV */
300aed98 1464#define IS_NUMBER_INFINITY 0x10 /* this is big */
25da4f38
IZ		 1465
1466/* Actually, ISO C leaves conversion of UV to IV undefined, but
1467 until proven guilty, assume that things are not that bad... */
1468
a0d0e21e 1469IV
864dbfa3 1470Perl_sv_2iv(pTHX_ register SV *sv)
79072805
LW		 1471{
1472 if (!sv)
1473 return 0;
8990e307 1474 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1475 mg_get(sv);
1476 if (SvIOKp(sv))
1477 return SvIVX(sv);
748a9306 1478 if (SvNOKp(sv)) {
25da4f38 1479 return I_V(SvNVX(sv));
748a9306 1480 }
36477c24 1481 if (SvPOKp(sv) && SvLEN(sv))
1482 return asIV(sv);
3fe9a6f1 1483 if (!SvROK(sv)) {
d008e5eb 1484 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1485 dTHR;
d008e5eb 1486 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1487 report_uninit();
c6ee37c5 1488 }
36477c24 1489 return 0;
3fe9a6f1 1490 }
463ee0b2 1491 }
ed6116ce 1492 if (SvTHINKFIRST(sv)) {
a0d0e21e 1493 if (SvROK(sv)) {
a0d0e21e 1494 SV* tmpstr;
1554e226
DC		 1495 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1496 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1497 return SvIV(tmpstr);
56431972 1498 return PTR2IV(SvRV(sv));
a0d0e21e 1499 }
47deb5e7
NIS		 1500 if (SvREADONLY(sv) && SvFAKE(sv)) {
1501 sv_force_normal(sv);
1502 }
0336b60e
IZ		 1503 if (SvREADONLY(sv) && !SvOK(sv)) {
1504 dTHR;
1505 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1506 report_uninit();
ed6116ce
LW		 1507 return 0;
1508 }
79072805 1509 }
25da4f38
IZ		 1510 if (SvIOKp(sv)) {
1511 if (SvIsUV(sv)) {
1512 return (IV)(SvUVX(sv));
1513 }
1514 else {
1515 return SvIVX(sv);
1516 }
463ee0b2 1517 }
748a9306 1518 if (SvNOKp(sv)) {
25da4f38
IZ		 1519 /* We can cache the IV/UV value even if it not good enough
1520 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1521 * NV over IV/UV.
25da4f38
IZ		 1522 */
1523
1524 if (SvTYPE(sv) == SVt_NV)
1525 sv_upgrade(sv, SVt_PVNV);
1526
a5f75d66 1527 (void)SvIOK_on(sv);
65202027 1528 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
748a9306 1529 SvIVX(sv) = I_V(SvNVX(sv));
25da4f38 1530 else {
ff68c719 1531 SvUVX(sv) = U_V(SvNVX(sv));
25da4f38
IZ		 1532 SvIsUV_on(sv);
1533 ret_iv_max:
1c846c1f 1534 DEBUG_c(PerlIO_printf(Perl_debug_log,
57def98f 1535 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
56431972 1536 PTR2UV(sv),
57def98f
JH		 1537 SvUVX(sv),
1538 SvUVX(sv)));
25da4f38
IZ		 1539 return (IV)SvUVX(sv);
1540 }
748a9306
LW		 1541 }
1542 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1543 I32 numtype = looks_like_number(sv);
1544
1545 /* We want to avoid a possible problem when we cache an IV which
1546 may be later translated to an NV, and the resulting NV is not
1547 the translation of the initial data.
1c846c1f 1548
25da4f38
IZ		 1549 This means that if we cache such an IV, we need to cache the
1550 NV as well. Moreover, we trade speed for space, and do not
1551 cache the NV if not needed.
1552 */
1553 if (numtype & IS_NUMBER_NOT_IV) {
1554 /* May be not an integer. Need to cache NV if we cache IV
1555 * - otherwise future conversion to NV will be wrong. */
65202027 1556 NV d;
25da4f38 1557
097ee67d 1558 d = Atof(SvPVX(sv));
25da4f38
IZ		 1559
1560 if (SvTYPE(sv) < SVt_PVNV)
1561 sv_upgrade(sv, SVt_PVNV);
1562 SvNVX(sv) = d;
1563 (void)SvNOK_on(sv);
1564 (void)SvIOK_on(sv);
65202027 1565#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1567 PTR2UV(sv), SvNVX(sv)));
65202027 1568#else
1d7c1841
GS		 1569 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1570 PTR2UV(sv), SvNVX(sv)));
65202027 1571#endif
65202027 1572 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
25da4f38
IZ		 1573 SvIVX(sv) = I_V(SvNVX(sv));
1574 else {
1575 SvUVX(sv) = U_V(SvNVX(sv));
1576 SvIsUV_on(sv);
1577 goto ret_iv_max;
1578 }
1579 }
0a3ece55
MG		 1580 else { /* The NV may be reconstructed from IV - safe to cache IV,
1581 which may be calculated by atol(). */
25da4f38
IZ		 1582 if (SvTYPE(sv) < SVt_PVIV)
1583 sv_upgrade(sv, SVt_PVIV);
25da4f38 1584 (void)SvIOK_on(sv);
0a3ece55
MG		 1585 SvIVX(sv) = Atol(SvPVX(sv));
1586 if (! numtype && ckWARN(WARN_NUMERIC))
25da4f38
IZ		 1587 not_a_number(sv);
1588 }
93a17b20 1589 }
79072805 1590 else {
11343788 1591 dTHR;
599cee73 1592 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1593 report_uninit();
25da4f38
IZ		 1594 if (SvTYPE(sv) < SVt_IV)
1595 /* Typically the caller expects that sv_any is not NULL now. */
1596 sv_upgrade(sv, SVt_IV);
a0d0e21e 1597 return 0;
79072805 1598 }
1d7c1841
GS		 1599 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1600 PTR2UV(sv),SvIVX(sv)));
25da4f38 1601 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
79072805
LW		 1602}
1603
ff68c719 1604UV
864dbfa3 1605Perl_sv_2uv(pTHX_ register SV *sv)
ff68c719 1606{
1607 if (!sv)
1608 return 0;
1609 if (SvGMAGICAL(sv)) {
1610 mg_get(sv);
1611 if (SvIOKp(sv))
1612 return SvUVX(sv);
1613 if (SvNOKp(sv))
1614 return U_V(SvNVX(sv));
36477c24 1615 if (SvPOKp(sv) && SvLEN(sv))
1616 return asUV(sv);
3fe9a6f1 1617 if (!SvROK(sv)) {
d008e5eb 1618 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1619 dTHR;
d008e5eb 1620 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1621 report_uninit();
c6ee37c5 1622 }
36477c24 1623 return 0;
3fe9a6f1 1624 }
ff68c719 1625 }
1626 if (SvTHINKFIRST(sv)) {
1627 if (SvROK(sv)) {
ff68c719 1628 SV* tmpstr;
1554e226
DC		 1629 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1630 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1631 return SvUV(tmpstr);
56431972 1632 return PTR2UV(SvRV(sv));
ff68c719 1633 }
0336b60e
IZ		 1634 if (SvREADONLY(sv) && !SvOK(sv)) {
1635 dTHR;
1636 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1637 report_uninit();
ff68c719 1638 return 0;
1639 }
1640 }
25da4f38
IZ		 1641 if (SvIOKp(sv)) {
1642 if (SvIsUV(sv)) {
1643 return SvUVX(sv);
1644 }
1645 else {
1646 return (UV)SvIVX(sv);
1647 }
ff68c719 1648 }
1649 if (SvNOKp(sv)) {
25da4f38
IZ		 1650 /* We can cache the IV/UV value even if it not good enough
1651 * to reconstruct NV, since the conversion to PV will prefer
cf2093f6 1652 * NV over IV/UV.
25da4f38
IZ		 1653 */
1654 if (SvTYPE(sv) == SVt_NV)
1655 sv_upgrade(sv, SVt_PVNV);
ff68c719 1656 (void)SvIOK_on(sv);
25da4f38
IZ		 1657 if (SvNVX(sv) >= -0.5) {
1658 SvIsUV_on(sv);
1659 SvUVX(sv) = U_V(SvNVX(sv));
1660 }
1661 else {
1662 SvIVX(sv) = I_V(SvNVX(sv));
1663 ret_zero:
1c846c1f 1664 DEBUG_c(PerlIO_printf(Perl_debug_log,
07270b1a 1665 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
57def98f
JH		 1666 PTR2UV(sv),
1667 SvIVX(sv),
1668 (IV)(UV)SvIVX(sv)));
25da4f38
IZ		 1669 return (UV)SvIVX(sv);
1670 }
ff68c719 1671 }
1672 else if (SvPOKp(sv) && SvLEN(sv)) {
25da4f38
IZ		 1673 I32 numtype = looks_like_number(sv);
1674
1675 /* We want to avoid a possible problem when we cache a UV which
1676 may be later translated to an NV, and the resulting NV is not
1677 the translation of the initial data.
1c846c1f 1678
25da4f38
IZ		 1679 This means that if we cache such a UV, we need to cache the
1680 NV as well. Moreover, we trade speed for space, and do not
1681 cache the NV if not needed.
1682 */
1683 if (numtype & IS_NUMBER_NOT_IV) {
1684 /* May be not an integer. Need to cache NV if we cache IV
1685 * - otherwise future conversion to NV will be wrong. */
65202027 1686 NV d;
25da4f38 1687
cf2093f6 1688 d = Atof(SvPVX(sv));
25da4f38
IZ		 1689
1690 if (SvTYPE(sv) < SVt_PVNV)
1691 sv_upgrade(sv, SVt_PVNV);
1692 SvNVX(sv) = d;
1693 (void)SvNOK_on(sv);
1694 (void)SvIOK_on(sv);
65202027 1695#if defined(USE_LONG_DOUBLE)
1d7c1841
GS		 1696 DEBUG_c(PerlIO_printf(Perl_debug_log,
1697 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1698 PTR2UV(sv), SvNVX(sv)));
65202027 1699#else
1d7c1841
GS		 1700 DEBUG_c(PerlIO_printf(Perl_debug_log,
1701 "0x%"UVxf" 2nv(%g)\n",
1702 PTR2UV(sv), SvNVX(sv)));
65202027 1703#endif
25da4f38
IZ		 1704 if (SvNVX(sv) < -0.5) {
1705 SvIVX(sv) = I_V(SvNVX(sv));
1706 goto ret_zero;
1707 } else {
1708 SvUVX(sv) = U_V(SvNVX(sv));
1709 SvIsUV_on(sv);
1710 }
1711 }
1712 else if (numtype & IS_NUMBER_NEG) {
1713 /* The NV may be reconstructed from IV - safe to cache IV,
1714 which may be calculated by atol(). */
1715 if (SvTYPE(sv) == SVt_PV)
1716 sv_upgrade(sv, SVt_PVIV);
1717 (void)SvIOK_on(sv);
cf2093f6 1718 SvIVX(sv) = (IV)Atol(SvPVX(sv));
25da4f38
IZ		 1719 }
1720 else if (numtype) { /* Non-negative */
1721 /* The NV may be reconstructed from UV - safe to cache UV,
1722 which may be calculated by strtoul()/atol. */
1723 if (SvTYPE(sv) == SVt_PV)
1724 sv_upgrade(sv, SVt_PVIV);
1725 (void)SvIOK_on(sv);
1726 (void)SvIsUV_on(sv);
1727#ifdef HAS_STRTOUL
cf2093f6 1728 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
25da4f38
IZ		 1729#else /* no atou(), but we know the number fits into IV... */
1730 /* The only problem may be if it is negative... */
cf2093f6 1731 SvUVX(sv) = (UV)Atol(SvPVX(sv));
25da4f38
IZ		 1732#endif
1733 }
1734 else { /* Not a number. Cache 0. */
1735 dTHR;
1736
1737 if (SvTYPE(sv) < SVt_PVIV)
1738 sv_upgrade(sv, SVt_PVIV);
25da4f38
IZ		 1739 (void)SvIOK_on(sv);
1740 (void)SvIsUV_on(sv);
7b9e3c00
GS		 1741 SvUVX(sv) = 0; /* We assume that 0s have the
1742 same bitmap in IV and UV. */
25da4f38
IZ		 1743 if (ckWARN(WARN_NUMERIC))
1744 not_a_number(sv);
1745 }
ff68c719 1746 }
1747 else {
d008e5eb 1748 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1749 dTHR;
d008e5eb 1750 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1751 report_uninit();
c6ee37c5 1752 }
25da4f38
IZ		 1753 if (SvTYPE(sv) < SVt_IV)
1754 /* Typically the caller expects that sv_any is not NULL now. */
1755 sv_upgrade(sv, SVt_IV);
ff68c719 1756 return 0;
1757 }
25da4f38 1758
1d7c1841
GS		 1759 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1760 PTR2UV(sv),SvUVX(sv)));
25da4f38 1761 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
ff68c719 1762}
1763
65202027 1764NV
864dbfa3 1765Perl_sv_2nv(pTHX_ register SV *sv)
79072805
LW		 1766{
1767 if (!sv)
1768 return 0.0;
8990e307 1769 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 1770 mg_get(sv);
1771 if (SvNOKp(sv))
1772 return SvNVX(sv);
a0d0e21e 1773 if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1774 dTHR;
599cee73 1775 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1776 not_a_number(sv);
097ee67d 1777 return Atof(SvPVX(sv));
a0d0e21e 1778 }
25da4f38 1779 if (SvIOKp(sv)) {
1c846c1f 1780 if (SvIsUV(sv))
65202027 1781 return (NV)SvUVX(sv);
25da4f38 1782 else
65202027 1783 return (NV)SvIVX(sv);
25da4f38 1784 }
16d20bd9 1785 if (!SvROK(sv)) {
d008e5eb 1786 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 1787 dTHR;
d008e5eb 1788 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 1789 report_uninit();
c6ee37c5 1790 }
16d20bd9
AD		 1791 return 0;
1792 }
463ee0b2 1793 }
ed6116ce 1794 if (SvTHINKFIRST(sv)) {
a0d0e21e 1795 if (SvROK(sv)) {
a0d0e21e 1796 SV* tmpstr;
1554e226
DC		 1797 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1798 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 1799 return SvNV(tmpstr);
56431972 1800 return PTR2NV(SvRV(sv));
a0d0e21e 1801 }
0336b60e 1802 if (SvREADONLY(sv) && !SvOK(sv)) {
d008e5eb 1803 dTHR;
599cee73 1804 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 1805 report_uninit();
ed6116ce
LW		 1806 return 0.0;
1807 }
79072805
LW		 1808 }
1809 if (SvTYPE(sv) < SVt_NV) {
463ee0b2
LW		 1810 if (SvTYPE(sv) == SVt_IV)
1811 sv_upgrade(sv, SVt_PVNV);
1812 else
1813 sv_upgrade(sv, SVt_NV);
572bbb43 1814#if defined(USE_LONG_DOUBLE)
097ee67d 1815 DEBUG_c({
f93f4e46 1816 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1817 PerlIO_printf(Perl_debug_log,
1818 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1819 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1820 RESTORE_NUMERIC_LOCAL();
1821 });
65202027 1822#else
572bbb43 1823 DEBUG_c({
f93f4e46 1824 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1825 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1826 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1827 RESTORE_NUMERIC_LOCAL();
1828 });
572bbb43 1829#endif
79072805
LW		 1830 }
1831 else if (SvTYPE(sv) < SVt_PVNV)
1832 sv_upgrade(sv, SVt_PVNV);
748a9306
LW		 1833 if (SvIOKp(sv) &&
1834 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
93a17b20 1835 {
65202027 1836 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
93a17b20 1837 }
748a9306 1838 else if (SvPOKp(sv) && SvLEN(sv)) {
d008e5eb 1839 dTHR;
599cee73 1840 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
a0d0e21e 1841 not_a_number(sv);
097ee67d 1842 SvNVX(sv) = Atof(SvPVX(sv));
93a17b20 1843 }
79072805 1844 else {
11343788 1845 dTHR;
599cee73 1846 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1d7c1841 1847 report_uninit();
25da4f38
IZ		 1848 if (SvTYPE(sv) < SVt_NV)
1849 /* Typically the caller expects that sv_any is not NULL now. */
1850 sv_upgrade(sv, SVt_NV);
a0d0e21e 1851 return 0.0;
79072805
LW		 1852 }
1853 SvNOK_on(sv);
572bbb43 1854#if defined(USE_LONG_DOUBLE)
097ee67d 1855 DEBUG_c({
f93f4e46 1856 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1857 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1858 PTR2UV(sv), SvNVX(sv));
572bbb43
GS		 1859 RESTORE_NUMERIC_LOCAL();
1860 });
65202027 1861#else
572bbb43 1862 DEBUG_c({
f93f4e46 1863 STORE_NUMERIC_LOCAL_SET_STANDARD();
1d7c1841
GS		 1864 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1865 PTR2UV(sv), SvNVX(sv));
097ee67d
JH		 1866 RESTORE_NUMERIC_LOCAL();
1867 });
572bbb43 1868#endif
463ee0b2 1869 return SvNVX(sv);
79072805
LW		 1870}
1871
76e3520e 1872STATIC IV
cea2e8a9 1873S_asIV(pTHX_ SV *sv)
36477c24 1874{
1875 I32 numtype = looks_like_number(sv);
65202027 1876 NV d;
36477c24 1877
25da4f38 1878 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1879 return Atol(SvPVX(sv));
d008e5eb
GS		 1880 if (!numtype) {
1881 dTHR;
1882 if (ckWARN(WARN_NUMERIC))
1883 not_a_number(sv);
1884 }
097ee67d 1885 d = Atof(SvPVX(sv));
25da4f38 1886 return I_V(d);
36477c24 1887}
1888
76e3520e 1889STATIC UV
cea2e8a9 1890S_asUV(pTHX_ SV *sv)
36477c24 1891{
1892 I32 numtype = looks_like_number(sv);
1893
84902520 1894#ifdef HAS_STRTOUL
25da4f38 1895 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
cf2093f6 1896 return Strtoul(SvPVX(sv), Null(char**), 10);
84902520 1897#endif
d008e5eb
GS		 1898 if (!numtype) {
1899 dTHR;
1900 if (ckWARN(WARN_NUMERIC))
1901 not_a_number(sv);
1902 }
097ee67d 1903 return U_V(Atof(SvPVX(sv)));
36477c24 1904}
1905
25da4f38
IZ		 1906/*
1907 * Returns a combination of (advisory only - can get false negatives)
1908 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1909 * IS_NUMBER_NEG
1910 * 0 if does not look like number.
1911 *
1912 * In fact possible values are 0 and
1913 * IS_NUMBER_TO_INT_BY_ATOL 123
1914 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1915 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
300aed98 1916 * IS_NUMBER_INFINITY
25da4f38
IZ		 1917 * with a possible addition of IS_NUMBER_NEG.
1918 */
1919
954c1994
GS		 1920/*
1921=for apidoc looks_like_number
1922
1923Test if an the content of an SV looks like a number (or is a
1924number).
1925
1926=cut
1927*/
1928
36477c24 1929I32
864dbfa3 1930Perl_looks_like_number(pTHX_ SV *sv)
36477c24 1931{
1932 register char *s;
1933 register char *send;
1934 register char *sbegin;
25da4f38
IZ		 1935 register char *nbegin;
1936 I32 numtype = 0;
300aed98 1937 I32 sawinf = 0;
36477c24 1938 STRLEN len;
1939
1940 if (SvPOK(sv)) {
1c846c1f 1941 sbegin = SvPVX(sv);
36477c24 1942 len = SvCUR(sv);
1943 }
1944 else if (SvPOKp(sv))
1945 sbegin = SvPV(sv, len);
1946 else
1947 return 1;
1948 send = sbegin + len;
1949
1950 s = sbegin;
1951 while (isSPACE(*s))
1952 s++;
25da4f38
IZ		 1953 if (*s == '-') {
1954 s++;
1955 numtype = IS_NUMBER_NEG;
1956 }
1957 else if (*s == '+')
36477c24 1958 s++;
ff0cee69 1959
25da4f38
IZ		 1960 nbegin = s;
1961 /*
097ee67d
JH		 1962 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1963 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1964 * (int)atof().
25da4f38
IZ		 1965 */
1966
300aed98 1967 /* next must be digit or the radix separator or beginning of infinity */
ff0cee69 1968 if (isDIGIT(*s)) {
1969 do {
1970 s++;
1971 } while (isDIGIT(*s));
25da4f38
IZ		 1972
1973 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1974 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1975 else
1976 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1977
097ee67d 1978 if (*s == '.'
1c846c1f 1979#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 1980 || IS_NUMERIC_RADIX(*s)
1981#endif
1982 ) {
ff0cee69 1983 s++;
25da4f38 1984 numtype |= IS_NUMBER_NOT_IV;
097ee67d 1985 while (isDIGIT(*s)) /* optional digits after the radix */
ff0cee69 1986 s++;
1987 }
36477c24 1988 }
097ee67d 1989 else if (*s == '.'
1c846c1f 1990#ifdef USE_LOCALE_NUMERIC
097ee67d
JH		 1991 || IS_NUMERIC_RADIX(*s)
1992#endif
1993 ) {
ff0cee69 1994 s++;
25da4f38 1995 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
097ee67d 1996 /* no digits before the radix means we need digits after it */
ff0cee69 1997 if (isDIGIT(*s)) {
1998 do {
1999 s++;
2000 } while (isDIGIT(*s));
2001 }
2002 else
2003 return 0;
2004 }
300aed98
JH		 2005 else if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'F' && *s != 'f') return 0;
2008 s++; if (*s == 'I' || *s == 'i') {
2009 s++; if (*s != 'N' && *s != 'n') return 0;
2010 s++; if (*s != 'I' && *s != 'i') return 0;
2011 s++; if (*s != 'T' && *s != 't') return 0;
2012 s++; if (*s != 'Y' && *s != 'y') return 0;
2013 }
2014 sawinf = 1;
2015 }
ff0cee69 2016 else
2017 return 0;
2018
300aed98
JH		 2019 if (sawinf)
2020 numtype = IS_NUMBER_INFINITY;
2021 else {
2022 /* we can have an optional exponent part */
2023 if (*s == 'e' || *s == 'E') {
2024 numtype &= ~IS_NUMBER_NEG;
2025 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
36477c24 2026 s++;
300aed98
JH		 2027 if (*s == '+' || *s == '-')
2028 s++;
2029 if (isDIGIT(*s)) {
2030 do {
2031 s++;
2032 } while (isDIGIT(*s));
2033 }
2034 else
2035 return 0;
2036 }
36477c24 2037 }
2038 while (isSPACE(*s))
2039 s++;
2040 if (s >= send)
2041 return numtype;
2042 if (len == 10 && memEQ(sbegin, "0 but true", 10))
25da4f38 2043 return IS_NUMBER_TO_INT_BY_ATOL;
36477c24 2044 return 0;
2045}
2046
79072805 2047char *
864dbfa3 2048Perl_sv_2pv_nolen(pTHX_ register SV *sv)
1fa8b10d
JD		 2049{
2050 STRLEN n_a;
2051 return sv_2pv(sv, &n_a);
2052}
2053
25da4f38 2054/* We assume that buf is at least TYPE_CHARS(UV) long. */
864dbfa3 2055static char *
25da4f38
IZ		 2056uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2057{
25da4f38
IZ		 2058 char *ptr = buf + TYPE_CHARS(UV);
2059 char *ebuf = ptr;
2060 int sign;
25da4f38
IZ		 2061
2062 if (is_uv)
2063 sign = 0;
2064 else if (iv >= 0) {
2065 uv = iv;
2066 sign = 0;
2067 } else {
2068 uv = -iv;
2069 sign = 1;
2070 }
2071 do {
2072 *--ptr = '0' + (uv % 10);
2073 } while (uv /= 10);
2074 if (sign)
2075 *--ptr = '-';
2076 *peob = ebuf;
2077 return ptr;
2078}
2079
1fa8b10d 2080char *
864dbfa3 2081Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
79072805
LW		 2082{
2083 register char *s;
2084 int olderrno;
46fc3d4c 2085 SV *tsv;
25da4f38
IZ		 2086 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2087 char *tmpbuf = tbuf;
79072805 2088
463ee0b2
LW		 2089 if (!sv) {
2090 *lp = 0;
2091 return "";
2092 }
8990e307 2093 if (SvGMAGICAL(sv)) {
463ee0b2
LW		 2094 mg_get(sv);
2095 if (SvPOKp(sv)) {
2096 *lp = SvCUR(sv);
2097 return SvPVX(sv);
2098 }
cf2093f6 2099 if (SvIOKp(sv)) {
1c846c1f 2100 if (SvIsUV(sv))
57def98f 2101 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
cf2093f6 2102 else
57def98f 2103 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
46fc3d4c 2104 tsv = Nullsv;
a0d0e21e 2105 goto tokensave;
463ee0b2
LW		 2106 }
2107 if (SvNOKp(sv)) {
2d4389e4 2108 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
46fc3d4c 2109 tsv = Nullsv;
a0d0e21e 2110 goto tokensave;
463ee0b2 2111 }
16d20bd9 2112 if (!SvROK(sv)) {
d008e5eb 2113 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
c6ee37c5 2114 dTHR;
d008e5eb 2115 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1d7c1841 2116 report_uninit();
c6ee37c5 2117 }
16d20bd9
AD		 2118 *lp = 0;
2119 return "";
2120 }
463ee0b2 2121 }
ed6116ce
LW		 2122 if (SvTHINKFIRST(sv)) {
2123 if (SvROK(sv)) {
a0d0e21e 2124 SV* tmpstr;
1554e226
DC		 2125 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2126 (SvRV(tmpstr) != SvRV(sv)))
9e7bc3e8 2127 return SvPV(tmpstr,*lp);
ed6116ce
LW		 2128 sv = (SV*)SvRV(sv);
2129 if (!sv)
2130 s = "NULLREF";
2131 else {
f9277f47
IZ		 2132 MAGIC *mg;
2133
ed6116ce 2134 switch (SvTYPE(sv)) {
f9277f47
IZ		 2135 case SVt_PVMG:
2136 if ( ((SvFLAGS(sv) &
1c846c1f 2137 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
3149a8e4 2138 == (SVs_OBJECT|SVs_RMG))
57668c4d 2139 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
f9277f47 2140 && (mg = mg_find(sv, 'r'))) {
5c0ca799 2141 dTHR;
2cd61cdb 2142 regexp *re = (regexp *)mg->mg_obj;
1bd3ad17 2143
2cd61cdb 2144 if (!mg->mg_ptr) {
8782bef2
GB		 2145 char *fptr = "msix";
2146 char reflags[6];
2147 char ch;
2148 int left = 0;
2149 int right = 4;
2150 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2151
155aba94 2152 while((ch = *fptr++)) {
8782bef2
GB		 2153 if(reganch & 1) {
2154 reflags[left++] = ch;
2155 }
2156 else {
2157 reflags[right--] = ch;
2158 }
2159 reganch >>= 1;
2160 }
2161 if(left != 4) {
2162 reflags[left] = '-';
2163 left = 5;
2164 }
2165
2166 mg->mg_len = re->prelen + 4 + left;
2167 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2168 Copy("(?", mg->mg_ptr, 2, char);
2169 Copy(reflags, mg->mg_ptr+2, left, char);
2170 Copy(":", mg->mg_ptr+left+2, 1, char);
2171 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
1bd3ad17
IZ		 2172 mg->mg_ptr[mg->mg_len - 1] = ')';
2173 mg->mg_ptr[mg->mg_len] = 0;
2174 }
3280af22 2175 PL_reginterp_cnt += re->program[0].next_off;
1bd3ad17
IZ		 2176 *lp = mg->mg_len;
2177 return mg->mg_ptr;
f9277f47
IZ		 2178 }
2179 /* Fall through */
ed6116ce
LW		 2180 case SVt_NULL:
2181 case SVt_IV:
2182 case SVt_NV:
2183 case SVt_RV:
2184 case SVt_PV:
2185 case SVt_PVIV:
2186 case SVt_PVNV:
81689caa
HS		 2187 case SVt_PVBM: if (SvROK(sv))
2188 s = "REF";
2189 else
2190 s = "SCALAR"; break;
ed6116ce
LW		 2191 case SVt_PVLV: s = "LVALUE"; break;
2192 case SVt_PVAV: s = "ARRAY"; break;
2193 case SVt_PVHV: s = "HASH"; break;
2194 case SVt_PVCV: s = "CODE"; break;
2195 case SVt_PVGV: s = "GLOB"; break;
1d2dff63 2196 case SVt_PVFM: s = "FORMAT"; break;
36477c24 2197 case SVt_PVIO: s = "IO"; break;
ed6116ce
LW		 2198 default: s = "UNKNOWN"; break;
2199 }
46fc3d4c 2200 tsv = NEWSV(0,0);
ed6116ce 2201 if (SvOBJECT(sv))
cea2e8a9 2202 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
ed6116ce 2203 else
46fc3d4c 2204 sv_setpv(tsv, s);
57def98f 2205 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
a0d0e21e 2206 goto tokensaveref;
463ee0b2 2207 }
ed6116ce
LW		 2208 *lp = strlen(s);
2209 return s;
79072805 2210 }
0336b60e
IZ		 2211 if (SvREADONLY(sv) && !SvOK(sv)) {
2212 dTHR;
2213 if (ckWARN(WARN_UNINITIALIZED))
1d7c1841 2214 report_uninit();
ed6116ce
LW		 2215 *lp = 0;
2216 return "";
79072805 2217 }
79072805 2218 }
25da4f38
IZ		 2219 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2220 /* XXXX 64-bit? IV may have better precision... */
8aad8eb3 2221 /* I tried changing this to be 64-bit-aware and
34d861e4
JH		 2222 * the t/op/numconvert.t became very, very, angry.
2223 * --jhi Sep 1999 */
79072805
LW		 2224 if (SvTYPE(sv) < SVt_PVNV)
2225 sv_upgrade(sv, SVt_PVNV);
1c846c1f 2226 /* The +20 is pure guesswork. Configure test needed. --jhi */
59155cc0 2227 SvGROW(sv, NV_DIG + 20);
463ee0b2 2228 s = SvPVX(sv);
79072805 2229 olderrno = errno; /* some Xenix systems wipe out errno here */
79072805 2230#ifdef apollo
463ee0b2 2231 if (SvNVX(sv) == 0.0)
79072805
LW		 2232 (void)strcpy(s,"0");
2233 else
2234#endif /*apollo*/
bbce6d69 2235 {
2d4389e4 2236 Gconvert(SvNVX(sv), NV_DIG, 0, s);
bbce6d69 2237 }
79072805 2238 errno = olderrno;
a0d0e21e
LW		 2239#ifdef FIXNEGATIVEZERO
2240 if (*s == '-' && s[1] == '0' && !s[2])
2241 strcpy(s,"0");
2242#endif
79072805
LW		 2243 while (*s) s++;
2244#ifdef hcx
2245 if (s[-1] == '.')
46fc3d4c 2246 *--s = '\0';
79072805
LW		 2247#endif
2248 }
748a9306 2249 else if (SvIOKp(sv)) {
25da4f38 2250 U32 isIOK = SvIOK(sv);
0336b60e 2251 U32 isUIOK = SvIsUV(sv);
25da4f38
IZ		 2252 char buf[TYPE_CHARS(UV)];
2253 char *ebuf, *ptr;
2254
79072805
LW		 2255 if (SvTYPE(sv) < SVt_PVIV)
2256 sv_upgrade(sv, SVt_PVIV);
0336b60e 2257 if (isUIOK)
25da4f38 2258 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
0336b60e 2259 else
25da4f38 2260 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
0336b60e
IZ		 2261 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2262 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2263 SvCUR_set(sv, ebuf - ptr);
46fc3d4c 2264 s = SvEND(sv);
0336b60e 2265 *s = '\0';
25da4f38 2266 if (isIOK)
64f14228
GA		 2267 SvIOK_on(sv);
2268 else
2269 SvIOKp_on(sv);
0336b60e
IZ		 2270 if (isUIOK)
2271 SvIsUV_on(sv);
2272 SvPOK_on(sv);
79072805
LW		 2273 }
2274 else {
11343788 2275 dTHR;
0336b60e
IZ		 2276 if (ckWARN(WARN_UNINITIALIZED)
2277 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2278 {
1d7c1841 2279 report_uninit();
0336b60e 2280 }
a0d0e21e 2281 *lp = 0;
25da4f38
IZ		 2282 if (SvTYPE(sv) < SVt_PV)
2283 /* Typically the caller expects that sv_any is not NULL now. */
2284 sv_upgrade(sv, SVt_PV);
a0d0e21e 2285 return "";
79072805 2286 }
463ee0b2
LW		 2287 *lp = s - SvPVX(sv);
2288 SvCUR_set(sv, *lp);
79072805 2289 SvPOK_on(sv);
1d7c1841
GS		 2290 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2291 PTR2UV(sv),SvPVX(sv)));
463ee0b2 2292 return SvPVX(sv);
a0d0e21e
LW		 2293
2294 tokensave:
2295 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2296 /* Sneaky stuff here */
2297
2298 tokensaveref:
46fc3d4c 2299 if (!tsv)
96827780 2300 tsv = newSVpv(tmpbuf, 0);
46fc3d4c 2301 sv_2mortal(tsv);
2302 *lp = SvCUR(tsv);
2303 return SvPVX(tsv);
a0d0e21e
LW		 2304 }
2305 else {
2306 STRLEN len;
46fc3d4c 2307 char *t;
2308
2309 if (tsv) {
2310 sv_2mortal(tsv);
2311 t = SvPVX(tsv);
2312 len = SvCUR(tsv);
2313 }
2314 else {
96827780
MB		 2315 t = tmpbuf;
2316 len = strlen(tmpbuf);
46fc3d4c 2317 }
a0d0e21e 2318#ifdef FIXNEGATIVEZERO
46fc3d4c 2319 if (len == 2 && t[0] == '-' && t[1] == '0') {
2320 t = "0";
2321 len = 1;
2322 }
a0d0e21e
LW		 2323#endif
2324 (void)SvUPGRADE(sv, SVt_PV);
46fc3d4c 2325 *lp = len;
a0d0e21e
LW		 2326 s = SvGROW(sv, len + 1);
2327 SvCUR_set(sv, len);
46fc3d4c 2328 (void)strcpy(s, t);
6bf554b4 2329 SvPOKp_on(sv);
a0d0e21e
LW		 2330 return s;
2331 }
463ee0b2
LW		 2332}
2333
7340a771
GS		 2334char *
2335Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2336{
560a288e
GS		 2337 STRLEN n_a;
2338 return sv_2pvbyte(sv, &n_a);
7340a771
GS		 2339}
2340
2341char *
2342Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2343{
2344 return sv_2pv(sv,lp);
2345}
2346
2347char *
2348Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2349{
560a288e
GS		 2350 STRLEN n_a;
2351 return sv_2pvutf8(sv, &n_a);
7340a771
GS		 2352}
2353
2354char *
2355Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2356{
560a288e 2357 sv_utf8_upgrade(sv);
7340a771
GS		 2358 return sv_2pv(sv,lp);
2359}
1c846c1f 2360
463ee0b2
LW		 2361/* This function is only called on magical items */
2362bool
864dbfa3 2363Perl_sv_2bool(pTHX_ register SV *sv)
463ee0b2 2364{
8990e307 2365 if (SvGMAGICAL(sv))
463ee0b2
LW		 2366 mg_get(sv);
2367
a0d0e21e
LW		 2368 if (!SvOK(sv))
2369 return 0;
2370 if (SvROK(sv)) {
11343788 2371 dTHR;
a0d0e21e 2372 SV* tmpsv;
1554e226
DC		 2373 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2374 (SvRV(tmpsv) != SvRV(sv)))
9e7bc3e8 2375 return SvTRUE(tmpsv);
a0d0e21e
LW		 2376 return SvRV(sv) != 0;
2377 }
463ee0b2 2378 if (SvPOKp(sv)) {
11343788
MB		 2379 register XPV* Xpvtmp;
2380 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2381 (*Xpvtmp->xpv_pv > '0' ||
2382 Xpvtmp->xpv_cur > 1 ||
2383 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
463ee0b2
LW		 2384 return 1;
2385 else
2386 return 0;
2387 }
2388 else {
2389 if (SvIOKp(sv))
2390 return SvIVX(sv) != 0;
2391 else {
2392 if (SvNOKp(sv))
2393 return SvNVX(sv) != 0.0;
2394 else
2395 return FALSE;
2396 }
2397 }
79072805
LW		 2398}
2399
c461cf8f
JH		 2400/*
2401=for apidoc sv_utf8_upgrade
2402
2403Convert the PV of an SV to its UTF8-encoded form.
2404
2405=cut
2406*/
2407
560a288e
GS		 2408void
2409Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2410{
40826f67
JH		 2411 char *s, *t;
2412 bool hibit;
560a288e
GS		 2413
2414 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2415 return;
2416
40826f67
JH		 2417 /* This function could be much more efficient if we had a FLAG in SVs
2418 * to signal if there are any hibit chars in the PV.
560a288e 2419 */
40826f67
JH		 2420 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2421 if (*t & 0x80)
2422 hibit = TRUE;
560a288e 2423
40826f67 2424 if (hibit) {
67e989fb 2425 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
00df9076 2426 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
841d7a39
JH		 2427 SvCUR(sv) = len - 1;
2428 SvLEN(sv) = len; /* No longer know the real size. */
560a288e 2429 SvUTF8_on(sv);
d2f449dd 2430 Safefree(s); /* No longer using what was there before. */
560a288e
GS		 2431 }
2432}
2433
c461cf8f
JH		 2434/*
2435=for apidoc sv_utf8_downgrade
2436
2437Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2438This may not be possible if the PV contains non-byte encoding characters;
2439if this is the case, either returns false or, if C<fail_ok> is not
2440true, croaks.
2441
2442=cut
2443*/
2444
560a288e
GS		 2445bool
2446Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2447{
2448 if (SvPOK(sv) && SvUTF8(sv)) {
2449 char *c = SvPVX(sv);
9f9ab905 2450 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
00df9076 2451 if (!utf8_to_bytes((U8*)c, &len)) {
67e989fb
JH		 2452 if (fail_ok)
2453 return FALSE;
4b3603a4
JH		 2454 else {
2455 if (PL_op)
2456 Perl_croak(aTHX_ "Wide character in %s",
2457 PL_op_desc[PL_op->op_type]);
2458 else
2459 Perl_croak(aTHX_ "Wide character");
2460 }
67e989fb
JH		 2461 }
2462 SvCUR(sv) = len - 1;
9f9ab905 2463 SvUTF8_off(sv);
560a288e
GS		 2464 }
2465 return TRUE;
2466}
2467
c461cf8f
JH		 2468/*
2469=for apidoc sv_utf8_encode
2470
2471Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
1c846c1f 2472flag so that it looks like bytes again. Nothing calls this.
c461cf8f
JH		 2473
2474=cut
2475*/
2476
560a288e
GS		 2477void
2478Perl_sv_utf8_encode(pTHX_ register SV *sv)
2479{
2480 sv_utf8_upgrade(sv);
2481 SvUTF8_off(sv);
2482}
2483
2484bool
2485Perl_sv_utf8_decode(pTHX_ register SV *sv)
2486{
2487 if (SvPOK(sv)) {
2488 char *c;
2489 bool has_utf = FALSE;
2490 if (!sv_utf8_downgrade(sv, TRUE))
2491 return FALSE;
2492
2493 /* it is actually just a matter of turning the utf8 flag on, but
2494 * we want to make sure everything inside is valid utf8 first.
2495 */
2496 c = SvPVX(sv);
00df9076 2497 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
67e989fb
JH		 2498 return FALSE;
2499
560a288e 2500 while (c < SvEND(sv)) {
67e989fb
JH		 2501 if (*c++ & 0x80) {
2502 SvUTF8_on(sv);
2503 break;
2504 }
560a288e 2505 }
560a288e
GS		 2506 }
2507 return TRUE;
2508}
2509
2510
79072805 2511/* Note: sv_setsv() should not be called with a source string that needs
463ee0b2 2512 * to be reused, since it may destroy the source string if it is marked
79072805
LW		 2513 * as temporary.
2514 */
2515
954c1994
GS		 2516/*
2517=for apidoc sv_setsv
2518
2519Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2520The source SV may be destroyed if it is mortal. Does not handle 'set'
2521magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2522C<sv_setsv_mg>.
2523
2524=cut
2525*/
2526
79072805 2527void
864dbfa3 2528Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
79072805 2529{
11343788 2530 dTHR;
8990e307
LW		 2531 register U32 sflags;
2532 register int dtype;
2533 register int stype;
463ee0b2 2534
79072805
LW		 2535 if (sstr == dstr)
2536 return;
2213622d 2537 SV_CHECK_THINKFIRST(dstr);
79072805 2538 if (!sstr)
3280af22 2539 sstr = &PL_sv_undef;
8990e307
LW		 2540 stype = SvTYPE(sstr);
2541 dtype = SvTYPE(dstr);
79072805 2542
a0d0e21e 2543 SvAMAGIC_off(dstr);
9e7bc3e8 2544
463ee0b2 2545 /* There's a lot of redundancy below but we're going for speed here */
79072805 2546
8990e307 2547 switch (stype) {
79072805 2548 case SVt_NULL:
aece5585 2549 undef_sstr:
20408e3c
GS		 2550 if (dtype != SVt_PVGV) {
2551 (void)SvOK_off(dstr);
2552 return;
2553 }
2554 break;
463ee0b2 2555 case SVt_IV:
aece5585
GA		 2556 if (SvIOK(sstr)) {
2557 switch (dtype) {
2558 case SVt_NULL:
8990e307 2559 sv_upgrade(dstr, SVt_IV);
aece5585
GA		 2560 break;
2561 case SVt_NV:
8990e307 2562 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2563 break;
2564 case SVt_RV:
2565 case SVt_PV:
a0d0e21e 2566 sv_upgrade(dstr, SVt_PVIV);
aece5585
GA		 2567 break;
2568 }
2569 (void)SvIOK_only(dstr);
2570 SvIVX(dstr) = SvIVX(sstr);
25da4f38
IZ		 2571 if (SvIsUV(sstr))
2572 SvIsUV_on(dstr);
aece5585
GA		 2573 SvTAINT(dstr);
2574 return;
8990e307 2575 }
aece5585
GA		 2576 goto undef_sstr;
2577
463ee0b2 2578 case SVt_NV:
aece5585
GA		 2579 if (SvNOK(sstr)) {
2580 switch (dtype) {
2581 case SVt_NULL:
2582 case SVt_IV:
8990e307 2583 sv_upgrade(dstr, SVt_NV);
aece5585
GA		 2584 break;
2585 case SVt_RV:
2586 case SVt_PV:
2587 case SVt_PVIV:
a0d0e21e 2588 sv_upgrade(dstr, SVt_PVNV);
aece5585
GA		 2589 break;
2590 }
2591 SvNVX(dstr) = SvNVX(sstr);
2592 (void)SvNOK_only(dstr);
2593 SvTAINT(dstr);
2594 return;
8990e307 2595 }
aece5585
GA		 2596 goto undef_sstr;
2597
ed6116ce 2598 case SVt_RV:
8990e307 2599 if (dtype < SVt_RV)
ed6116ce 2600 sv_upgrade(dstr, SVt_RV);
c07a80fd 2601 else if (dtype == SVt_PVGV &&
2602 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2603 sstr = SvRV(sstr);
a5f75d66 2604 if (sstr == dstr) {
1d7c1841
GS		 2605 if (GvIMPORTED(dstr) != GVf_IMPORTED
2606 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2607 {
a5f75d66 2608 GvIMPORTED_on(dstr);
1d7c1841 2609 }
a5f75d66
AD		 2610 GvMULTI_on(dstr);
2611 return;
2612 }
c07a80fd 2613 goto glob_assign;
2614 }
ed6116ce 2615 break;
463ee0b2 2616 case SVt_PV:
fc36a67e 2617 case SVt_PVFM:
8990e307 2618 if (dtype < SVt_PV)
463ee0b2 2619 sv_upgrade(dstr, SVt_PV);
463ee0b2
LW		 2620 break;
2621 case SVt_PVIV:
8990e307 2622 if (dtype < SVt_PVIV)
463ee0b2 2623 sv_upgrade(dstr, SVt_PVIV);
463ee0b2
LW		 2624 break;
2625 case SVt_PVNV:
8990e307 2626 if (dtype < SVt_PVNV)
463ee0b2 2627 sv_upgrade(dstr, SVt_PVNV);
463ee0b2 2628 break;
4633a7c4
LW		 2629 case SVt_PVAV:
2630 case SVt_PVHV:
2631 case SVt_PVCV:
4633a7c4 2632 case SVt_PVIO:
533c011a 2633 if (PL_op)
cea2e8a9 2634 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
22c35a8c 2635 PL_op_name[PL_op->op_type]);
4633a7c4 2636 else
cea2e8a9 2637 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
4633a7c4
LW		 2638 break;
2639
79072805 2640 case SVt_PVGV:
8990e307 2641 if (dtype <= SVt_PVGV) {
c07a80fd 2642 glob_assign:
a5f75d66 2643 if (dtype != SVt_PVGV) {
a0d0e21e
LW		 2644 char *name = GvNAME(sstr);
2645 STRLEN len = GvNAMELEN(sstr);
463ee0b2 2646 sv_upgrade(dstr, SVt_PVGV);
6662521e 2647 sv_magic(dstr, dstr, '*', Nullch, 0);
85aff577 2648 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
a0d0e21e
LW		 2649 GvNAME(dstr) = savepvn(name, len);
2650 GvNAMELEN(dstr) = len;
2651 SvFAKE_on(dstr); /* can coerce to non-glob */
2652 }
7bac28a0 2653 /* ahem, death to those who redefine active sort subs */
3280af22
NIS		 2654 else if (PL_curstackinfo->si_type == PERLSI_SORT
2655 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
cea2e8a9 2656 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
7bac28a0 2657 GvNAME(dstr));
a0d0e21e 2658 (void)SvOK_off(dstr);
a5f75d66 2659 GvINTRO_off(dstr); /* one-shot flag */
1edc1566 2660 gp_free((GV*)dstr);
79072805 2661 GvGP(dstr) = gp_ref(GvGP(sstr));
8990e307 2662 SvTAINT(dstr);
1d7c1841
GS		 2663 if (GvIMPORTED(dstr) != GVf_IMPORTED
2664 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2665 {
a5f75d66 2666 GvIMPORTED_on(dstr);
1d7c1841 2667 }
a5f75d66 2668 GvMULTI_on(dstr);
79072805
LW		 2669 return;
2670 }
2671 /* FALL THROUGH */
2672
2673 default:
973f89ab
CS		 2674 if (SvGMAGICAL(sstr)) {
2675 mg_get(sstr);
2676 if (SvTYPE(sstr) != stype) {
2677 stype = SvTYPE(sstr);
2678 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2679 goto glob_assign;
2680 }
2681 }
ded42b9f 2682 if (stype == SVt_PVLV)
6fc92669 2683 (void)SvUPGRADE(dstr, SVt_PVNV);
ded42b9f 2684 else
6fc92669 2685 (void)SvUPGRADE(dstr, stype);
79072805
LW		 2686 }
2687
8990e307
LW		 2688 sflags = SvFLAGS(sstr);
2689
2690 if (sflags & SVf_ROK) {
2691 if (dtype >= SVt_PV) {
2692 if (dtype == SVt_PVGV) {
2693 SV *sref = SvREFCNT_inc(SvRV(sstr));
2694 SV *dref = 0;
a5f75d66 2695 int intro = GvINTRO(dstr);
a0d0e21e
LW		 2696
2697 if (intro) {
2698 GP *gp;
1d7c1841 2699 gp_free((GV*)dstr);
a5f75d66 2700 GvINTRO_off(dstr); /* one-shot flag */
a0d0e21e 2701 Newz(602,gp, 1, GP);
44a8e56a 2702 GvGP(dstr) = gp_ref(gp);
a0d0e21e 2703 GvSV(dstr) = NEWSV(72,0);
1d7c1841 2704 GvLINE(dstr) = CopLINE(PL_curcop);
1edc1566 2705 GvEGV(dstr) = (GV*)dstr;
a0d0e21e 2706 }
a5f75d66 2707 GvMULTI_on(dstr);
8990e307
LW		 2708 switch (SvTYPE(sref)) {
2709 case SVt_PVAV:
a0d0e21e
LW		 2710 if (intro)
2711 SAVESPTR(GvAV(dstr));
2712 else
2713 dref = (SV*)GvAV(dstr);
8990e307 2714 GvAV(dstr) = (AV*)sref;
39bac7f7 2715 if (!GvIMPORTED_AV(dstr)
1d7c1841
GS		 2716 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2717 {
a5f75d66 2718 GvIMPORTED_AV_on(dstr);
1d7c1841 2719 }
8990e307
LW		 2720 break;
2721 case SVt_PVHV:
a0d0e21e
LW		 2722 if (intro)
2723 SAVESPTR(GvHV(dstr));
2724 else
2725 dref = (SV*)GvHV(dstr);
8990e307 2726 GvHV(dstr) = (HV*)sref;
39bac7f7 2727 if (!GvIMPORTED_HV(dstr)
1d7c1841
GS		 2728 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2729 {
a5f75d66 2730 GvIMPORTED_HV_on(dstr);
1d7c1841 2731 }
8990e307
LW		 2732 break;
2733 case SVt_PVCV:
8ebc5c01 2734 if (intro) {
2735 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2736 SvREFCNT_dec(GvCV(dstr));
2737 GvCV(dstr) = Nullcv;
68dc0745 2738 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
3280af22 2739 PL_sub_generation++;
8ebc5c01 2740 }
a0d0e21e 2741 SAVESPTR(GvCV(dstr));
8ebc5c01 2742 }
68dc0745 2743 else
2744 dref = (SV*)GvCV(dstr);
2745 if (GvCV(dstr) != (CV*)sref) {
748a9306 2746 CV* cv = GvCV(dstr);
4633a7c4 2747 if (cv) {
68dc0745 2748 if (!GvCVGEN((GV*)dstr) &&
2749 (CvROOT(cv) || CvXSUB(cv)))
2750 {
beab0874 2751 SV *const_sv;
7bac28a0 2752 /* ahem, death to those who redefine
2753 * active sort subs */
3280af22
NIS		 2754 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2755 PL_sortcop == CvSTART(cv))
1c846c1f 2756 Perl_croak(aTHX_
7bac28a0 2757 "Can't redefine active sort subroutine %s",
2758 GvENAME((GV*)dstr));
beab0874
JT		 2759 /* Redefining a sub - warning is mandatory if
2760 it was a const and its value changed. */
2761 if (ckWARN(WARN_REDEFINE)
2762 || (CvCONST(cv)
2763 && (!CvCONST((CV*)sref)
2764 || sv_cmp(cv_const_sv(cv),
2765 cv_const_sv((CV*)sref)))))
2766 {
2767 Perl_warner(aTHX_ WARN_REDEFINE,
2768 CvCONST(cv)
2769 ? "Constant subroutine %s redefined"
47deb5e7 2770 : "Subroutine %s redefined",
beab0874
JT		 2771 GvENAME((GV*)dstr));
2772 }
9607fc9c 2773 }
3fe9a6f1 2774 cv_ckproto(cv, (GV*)dstr,
2775 SvPOK(sref) ? SvPVX(sref) : Nullch);
4633a7c4 2776 }
a5f75d66 2777 GvCV(dstr) = (CV*)sref;
7a4c00b4 2778 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
a5f75d66 2779 GvASSUMECV_on(dstr);
3280af22 2780 PL_sub_generation++;
a5f75d66 2781 }
39bac7f7 2782 if (!GvIMPORTED_CV(dstr)
1d7c1841
GS		 2783 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2784 {
a5f75d66 2785 GvIMPORTED_CV_on(dstr);
1d7c1841 2786 }
8990e307 2787 break;
91bba347
LW		 2788 case SVt_PVIO:
2789 if (intro)
2790 SAVESPTR(GvIOp(dstr));
2791 else
2792 dref = (SV*)GvIOp(dstr);
2793 GvIOp(dstr) = (IO*)sref;
2794 break;
f4d13ee9
JH		 2795 case SVt_PVFM:
2796 if (intro)
2797 SAVESPTR(GvFORM(dstr));
2798 else
2799 dref = (SV*)GvFORM(dstr);
2800 GvFORM(dstr) = (CV*)sref;
2801 break;
8990e307 2802 default:
a0d0e21e
LW		 2803 if (intro)
2804 SAVESPTR(GvSV(dstr));
2805 else
2806 dref = (SV*)GvSV(dstr);
8990e307 2807 GvSV(dstr) = sref;
39bac7f7 2808 if (!GvIMPORTED_SV(dstr)
1d7c1841
GS		 2809 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2810 {
a5f75d66 2811 GvIMPORTED_SV_on(dstr);
1d7c1841 2812 }
8990e307
LW		 2813 break;
2814 }
2815 if (dref)
2816 SvREFCNT_dec(dref);
a0d0e21e
LW		 2817 if (intro)
2818 SAVEFREESV(sref);
8990e307
LW		 2819 SvTAINT(dstr);
2820 return;
2821 }
a0d0e21e 2822 if (SvPVX(dstr)) {
760ac839 2823 (void)SvOOK_off(dstr); /* backoff */
50483b2c
JD		 2824 if (SvLEN(dstr))
2825 Safefree(SvPVX(dstr));
a0d0e21e
LW		 2826 SvLEN(dstr)=SvCUR(dstr)=0;
2827 }
8990e307 2828 }
a0d0e21e 2829 (void)SvOK_off(dstr);
8990e307 2830 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
ed6116ce 2831 SvROK_on(dstr);
8990e307 2832 if (sflags & SVp_NOK) {
ed6116ce
LW		 2833 SvNOK_on(dstr);
2834 SvNVX(dstr) = SvNVX(sstr);
2835 }
8990e307 2836 if (sflags & SVp_IOK) {
a0d0e21e 2837 (void)SvIOK_on(dstr);
ed6116ce 2838 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2839 if (sflags & SVf_IVisUV)
25da4f38 2840 SvIsUV_on(dstr);
ed6116ce 2841 }
a0d0e21e
LW		 2842 if (SvAMAGIC(sstr)) {
2843 SvAMAGIC_on(dstr);
2844 }
ed6116ce 2845 }
8990e307 2846 else if (sflags & SVp_POK) {
79072805
LW		 2847
2848 /*
2849 * Check to see if we can just swipe the string. If so, it's a
2850 * possible small lose on short strings, but a big win on long ones.
463ee0b2
LW		 2851 * It might even be a win on short strings if SvPVX(dstr)
2852 * has to be allocated and SvPVX(sstr) has to be freed.
79072805
LW		 2853 */
2854
ff68c719 2855 if (SvTEMP(sstr) && /* slated for free anyway? */
01b73108 2856 SvREFCNT(sstr) == 1 && /* and no other references to it? */
1c846c1f
NIS		 2857 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2858 SvLEN(sstr)) /* and really is a string */
a5f75d66 2859 {
adbc6bb1 2860 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
a5f75d66
AD		 2861 if (SvOOK(dstr)) {
2862 SvFLAGS(dstr) &= ~SVf_OOK;
2863 Safefree(SvPVX(dstr) - SvIVX(dstr));
2864 }
50483b2c 2865 else if (SvLEN(dstr))
a5f75d66 2866 Safefree(SvPVX(dstr));
79072805 2867 }
a5f75d66 2868 (void)SvPOK_only(dstr);
463ee0b2 2869 SvPV_set(dstr, SvPVX(sstr));
79072805
LW		 2870 SvLEN_set(dstr, SvLEN(sstr));
2871 SvCUR_set(dstr, SvCUR(sstr));
f4e86e0f 2872
79072805 2873 SvTEMP_off(dstr);
2b1c7e3e 2874 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
79072805
LW		 2875 SvPV_set(sstr, Nullch);
2876 SvLEN_set(sstr, 0);
a5f75d66
AD		 2877 SvCUR_set(sstr, 0);
2878 SvTEMP_off(sstr);
79072805
LW		 2879 }
2880 else { /* have to copy actual string */
8990e307
LW		 2881 STRLEN len = SvCUR(sstr);
2882
2883 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2884 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2885 SvCUR_set(dstr, len);
2886 *SvEND(dstr) = '\0';
a0d0e21e 2887 (void)SvPOK_only(dstr);
79072805 2888 }
3aa33fe5 2889 if ((sflags & SVf_UTF8) && !IN_BYTE)
a7cb1f99 2890 SvUTF8_on(dstr);
79072805 2891 /*SUPPRESS 560*/
8990e307 2892 if (sflags & SVp_NOK) {
79072805 2893 SvNOK_on(dstr);
463ee0b2 2894 SvNVX(dstr) = SvNVX(sstr);
79072805 2895 }
8990e307 2896 if (sflags & SVp_IOK) {
a0d0e21e 2897 (void)SvIOK_on(dstr);
463ee0b2 2898 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2899 if (sflags & SVf_IVisUV)
25da4f38 2900 SvIsUV_on(dstr);
79072805
LW		 2901 }
2902 }
8990e307 2903 else if (sflags & SVp_NOK) {
463ee0b2 2904 SvNVX(dstr) = SvNVX(sstr);
a0d0e21e 2905 (void)SvNOK_only(dstr);
2b1c7e3e 2906 if (sflags & SVf_IOK) {
a0d0e21e 2907 (void)SvIOK_on(dstr);
463ee0b2 2908 SvIVX(dstr) = SvIVX(sstr);
25da4f38 2909 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2b1c7e3e 2910 if (sflags & SVf_IVisUV)
25da4f38 2911 SvIsUV_on(dstr);
79072805
LW		 2912 }
2913 }
8990e307 2914 else if (sflags & SVp_IOK) {
a0d0e21e 2915 (void)SvIOK_only(dstr);
463ee0b2 2916 SvIVX(dstr) = SvIVX(sstr);
2b1c7e3e 2917 if (sflags & SVf_IVisUV)
25da4f38 2918 SvIsUV_on(dstr);
79072805
LW		 2919 }
2920 else {
20408e3c 2921 if (dtype == SVt_PVGV) {
e476b1b5
GS		 2922 if (ckWARN(WARN_MISC))
2923 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
20408e3c
GS		 2924 }
2925 else
2926 (void)SvOK_off(dstr);
a0d0e21e 2927 }
463ee0b2 2928 SvTAINT(dstr);
79072805
LW		 2929}
2930
954c1994
GS		 2931/*
2932=for apidoc sv_setsv_mg
2933
2934Like C<sv_setsv>, but also handles 'set' magic.
2935
2936=cut
2937*/
2938
79072805 2939void
864dbfa3 2940Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 2941{
2942 sv_setsv(dstr,sstr);
2943 SvSETMAGIC(dstr);
2944}
2945
954c1994
GS		 2946/*
2947=for apidoc sv_setpvn
2948
2949Copies a string into an SV. The C<len> parameter indicates the number of
2950bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2951
2952=cut
2953*/
2954
ef50df4b 2955void
864dbfa3 2956Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 2957{
c6f8c383 2958 register char *dptr;
4561caa4
CS		 2959 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2960 elicit a warning, but it won't hurt. */
2213622d 2961 SV_CHECK_THINKFIRST(sv);
463ee0b2 2962 if (!ptr) {
a0d0e21e 2963 (void)SvOK_off(sv);
463ee0b2
LW		 2964 return;
2965 }
6fc92669 2966 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 2967
79072805 2968 SvGROW(sv, len + 1);
c6f8c383
GA		 2969 dptr = SvPVX(sv);
2970 Move(ptr,dptr,len,char);
2971 dptr[len] = '\0';
79072805 2972 SvCUR_set(sv, len);
a0d0e21e 2973 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 2974 SvTAINT(sv);
79072805
LW		 2975}
2976
954c1994
GS		 2977/*
2978=for apidoc sv_setpvn_mg
2979
2980Like C<sv_setpvn>, but also handles 'set' magic.
2981
2982=cut
2983*/
2984
79072805 2985void
864dbfa3 2986Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 2987{
2988 sv_setpvn(sv,ptr,len);
2989 SvSETMAGIC(sv);
2990}
2991
954c1994
GS		 2992/*
2993=for apidoc sv_setpv
2994
2995Copies a string into an SV. The string must be null-terminated. Does not
2996handle 'set' magic. See C<sv_setpv_mg>.
2997
2998=cut
2999*/
3000
ef50df4b 3001void
864dbfa3 3002Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3003{
3004 register STRLEN len;
3005
2213622d 3006 SV_CHECK_THINKFIRST(sv);
463ee0b2 3007 if (!ptr) {
a0d0e21e 3008 (void)SvOK_off(sv);
463ee0b2
LW		 3009 return;
3010 }
79072805 3011 len = strlen(ptr);
6fc92669 3012 (void)SvUPGRADE(sv, SVt_PV);
c6f8c383 3013
79072805 3014 SvGROW(sv, len + 1);
463ee0b2 3015 Move(ptr,SvPVX(sv),len+1,char);
79072805 3016 SvCUR_set(sv, len);
a0d0e21e 3017 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2
LW		 3018 SvTAINT(sv);
3019}
3020
954c1994
GS		 3021/*
3022=for apidoc sv_setpv_mg
3023
3024Like C<sv_setpv>, but also handles 'set' magic.
3025
3026=cut
3027*/
3028
463ee0b2 3029void
864dbfa3 3030Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b
GS		 3031{
3032 sv_setpv(sv,ptr);
3033 SvSETMAGIC(sv);
3034}
3035
954c1994
GS		 3036/*
3037=for apidoc sv_usepvn
3038
3039Tells an SV to use C<ptr> to find its string value. Normally the string is
1c846c1f 3040stored inside the SV but sv_usepvn allows the SV to use an outside string.
954c1994
GS		 3041The C<ptr> should point to memory that was allocated by C<malloc>. The
3042string length, C<len>, must be supplied. This function will realloc the
3043memory pointed to by C<ptr>, so that pointer should not be freed or used by
3044the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3045See C<sv_usepvn_mg>.
3046
3047=cut
3048*/
3049
ef50df4b 3050void
864dbfa3 3051Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
463ee0b2 3052{
2213622d 3053 SV_CHECK_THINKFIRST(sv);
c6f8c383 3054 (void)SvUPGRADE(sv, SVt_PV);
463ee0b2 3055 if (!ptr) {
a0d0e21e 3056 (void)SvOK_off(sv);
463ee0b2
LW		 3057 return;
3058 }
a0ed51b3 3059 (void)SvOOK_off(sv);
50483b2c 3060 if (SvPVX(sv) && SvLEN(sv))
463ee0b2
LW		 3061 Safefree(SvPVX(sv));
3062 Renew(ptr, len+1, char);
3063 SvPVX(sv) = ptr;
3064 SvCUR_set(sv, len);
3065 SvLEN_set(sv, len+1);
3066 *SvEND(sv) = '\0';
a0d0e21e 3067 (void)SvPOK_only(sv); /* validate pointer */
463ee0b2 3068 SvTAINT(sv);
79072805
LW		 3069}
3070
954c1994
GS		 3071/*
3072=for apidoc sv_usepvn_mg
3073
3074Like C<sv_usepvn>, but also handles 'set' magic.
3075
3076=cut
3077*/
3078
ef50df4b 3079void
864dbfa3 3080Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
ef50df4b 3081{
51c1089b 3082 sv_usepvn(sv,ptr,len);
ef50df4b
GS		 3083 SvSETMAGIC(sv);
3084}
3085
6fc92669 3086void
864dbfa3 3087Perl_sv_force_normal(pTHX_ register SV *sv)
0f15f207 3088{
2213622d
GA		 3089 if (SvREADONLY(sv)) {
3090 dTHR;
1c846c1f
NIS		 3091 if (SvFAKE(sv)) {
3092 char *pvx = SvPVX(sv);
3093 STRLEN len = SvCUR(sv);
3094 U32 hash = SvUVX(sv);
3095 SvGROW(sv, len + 1);
3096 Move(pvx,SvPVX(sv),len,char);
3097 *SvEND(sv) = '\0';
3098 SvFAKE_off(sv);
3099 SvREADONLY_off(sv);
3100 unsharepvn(pvx,len,hash);
3101 }
3102 else if (PL_curcop != &PL_compiling)
cea2e8a9 3103 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3104 }
2213622d
GA		 3105 if (SvROK(sv))
3106 sv_unref(sv);
6fc92669
GS		 3107 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3108 sv_unglob(sv);
0f15f207 3109}
1c846c1f 3110
954c1994
GS		 3111/*
3112=for apidoc sv_chop
3113
1c846c1f 3114Efficient removal of characters from the beginning of the string buffer.
954c1994
GS		 3115SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3116the string buffer. The C<ptr> becomes the first character of the adjusted
3117string.
3118
3119=cut
3120*/
3121
79072805 3122void
864dbfa3 3123Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
1c846c1f
NIS		 3124
3125
79072805
LW		 3126{
3127 register STRLEN delta;
3128
a0d0e21e 3129 if (!ptr || !SvPOKp(sv))
79072805 3130 return;
2213622d 3131 SV_CHECK_THINKFIRST(sv);
79072805
LW		 3132 if (SvTYPE(sv) < SVt_PVIV)
3133 sv_upgrade(sv,SVt_PVIV);
3134
3135 if (!SvOOK(sv)) {
50483b2c
JD		 3136 if (!SvLEN(sv)) { /* make copy of shared string */
3137 char *pvx = SvPVX(sv);
3138 STRLEN len = SvCUR(sv);
3139 SvGROW(sv, len + 1);
3140 Move(pvx,SvPVX(sv),len,char);
3141 *SvEND(sv) = '\0';
3142 }
463ee0b2 3143 SvIVX(sv) = 0;
79072805
LW		 3144 SvFLAGS(sv) |= SVf_OOK;
3145 }
25da4f38 3146 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
463ee0b2 3147 delta = ptr - SvPVX(sv);
79072805
LW		 3148 SvLEN(sv) -= delta;
3149 SvCUR(sv) -= delta;
463ee0b2
LW		 3150 SvPVX(sv) += delta;
3151 SvIVX(sv) += delta;
79072805
LW		 3152}
3153
954c1994
GS		 3154/*
3155=for apidoc sv_catpvn
3156
3157Concatenates the string onto the end of the string which is in the SV. The
3158C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3159'set' magic. See C<sv_catpvn_mg>.
3160
3161=cut
3162*/
3163
79072805 3164void
864dbfa3 3165Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
79072805 3166{
463ee0b2 3167 STRLEN tlen;
748a9306 3168 char *junk;
a0d0e21e 3169
748a9306 3170 junk = SvPV_force(sv, tlen);
463ee0b2 3171 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3172 if (ptr == junk)
3173 ptr = SvPVX(sv);
463ee0b2 3174 Move(ptr,SvPVX(sv)+tlen,len,char);
79072805
LW		 3175 SvCUR(sv) += len;
3176 *SvEND(sv) = '\0';
d41ff1b8 3177 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3178 SvTAINT(sv);
79072805
LW		 3179}
3180
954c1994
GS		 3181/*
3182=for apidoc sv_catpvn_mg
3183
3184Like C<sv_catpvn>, but also handles 'set' magic.
3185
3186=cut
3187*/
3188
79072805 3189void
864dbfa3 3190Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
ef50df4b
GS		 3191{
3192 sv_catpvn(sv,ptr,len);
3193 SvSETMAGIC(sv);
3194}
3195
954c1994
GS		 3196/*
3197=for apidoc sv_catsv
3198
3199Concatenates the string from SV C<ssv> onto the end of the string in SV
3200C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3201
3202=cut
3203*/
3204
ef50df4b 3205void
864dbfa3 3206Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
79072805
LW		 3207{
3208 char *s;
463ee0b2 3209 STRLEN len;
79072805
LW		 3210 if (!sstr)
3211 return;
155aba94 3212 if ((s = SvPV(sstr, len))) {
e84ff256 3213 if (DO_UTF8(sstr)) {
560a288e 3214 sv_utf8_upgrade(dstr);
e84ff256 3215 sv_catpvn(dstr,s,len);
560a288e 3216 SvUTF8_on(dstr);
e84ff256
GS		 3217 }
3218 else
3219 sv_catpvn(dstr,s,len);
560a288e 3220 }
79072805
LW		 3221}
3222
954c1994
GS		 3223/*
3224=for apidoc sv_catsv_mg
3225
3226Like C<sv_catsv>, but also handles 'set' magic.
3227
3228=cut
3229*/
3230
79072805 3231void
864dbfa3 3232Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
ef50df4b
GS		 3233{
3234 sv_catsv(dstr,sstr);
3235 SvSETMAGIC(dstr);
3236}
3237
954c1994
GS		 3238/*
3239=for apidoc sv_catpv
3240
3241Concatenates the string onto the end of the string which is in the SV.
3242Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3243
3244=cut
3245*/
3246
ef50df4b 3247void
864dbfa3 3248Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
79072805
LW		 3249{
3250 register STRLEN len;
463ee0b2 3251 STRLEN tlen;
748a9306 3252 char *junk;
79072805 3253
79072805
LW		 3254 if (!ptr)
3255 return;
748a9306 3256 junk = SvPV_force(sv, tlen);
79072805 3257 len = strlen(ptr);
463ee0b2 3258 SvGROW(sv, tlen + len + 1);
4633a7c4
LW		 3259 if (ptr == junk)
3260 ptr = SvPVX(sv);
463ee0b2 3261 Move(ptr,SvPVX(sv)+tlen,len+1,char);
79072805 3262 SvCUR(sv) += len;
d41ff1b8 3263 (void)SvPOK_only_UTF8(sv); /* validate pointer */
463ee0b2 3264 SvTAINT(sv);
79072805
LW		 3265}
3266
954c1994
GS		 3267/*
3268=for apidoc sv_catpv_mg
3269
3270Like C<sv_catpv>, but also handles 'set' magic.
3271
3272=cut
3273*/
3274
ef50df4b 3275void
864dbfa3 3276Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
ef50df4b 3277{
51c1089b 3278 sv_catpv(sv,ptr);
ef50df4b
GS		 3279 SvSETMAGIC(sv);
3280}
3281
79072805 3282SV *
864dbfa3 3283Perl_newSV(pTHX_ STRLEN len)
79072805
LW		 3284{
3285 register SV *sv;
1c846c1f 3286
4561caa4 3287 new_SV(sv);
79072805
LW		 3288 if (len) {
3289 sv_upgrade(sv, SVt_PV);
3290 SvGROW(sv, len + 1);
3291 }
3292 return sv;
3293}
3294
1edc1566 3295/* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3296
954c1994
GS		 3297/*
3298=for apidoc sv_magic
3299
3300Adds magic to an SV.
3301
3302=cut
3303*/
3304
79072805 3305void
864dbfa3 3306Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
79072805
LW		 3307{
3308 MAGIC* mg;
1c846c1f 3309
0f15f207
MB		 3310 if (SvREADONLY(sv)) {
3311 dTHR;
3280af22 3312 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
cea2e8a9 3313 Perl_croak(aTHX_ PL_no_modify);
0f15f207 3314 }
4633a7c4 3315 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
748a9306
LW		 3316 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3317 if (how == 't')
565764a8 3318 mg->mg_len |= 1;
463ee0b2 3319 return;
748a9306 3320 }
463ee0b2
LW		 3321 }
3322 else {
c6f8c383 3323 (void)SvUPGRADE(sv, SVt_PVMG);
463ee0b2 3324 }
79072805
LW		 3325 Newz(702,mg, 1, MAGIC);
3326 mg->mg_moremagic = SvMAGIC(sv);
463ee0b2 3327
79072805 3328 SvMAGIC(sv) = mg;
c277df42 3329 if (!obj || obj == sv || how == '#' || how == 'r')
8990e307 3330 mg->mg_obj = obj;
85e6fe83 3331 else {
11343788 3332 dTHR;
8990e307 3333 mg->mg_obj = SvREFCNT_inc(obj);
85e6fe83
LW		 3334 mg->mg_flags |= MGf_REFCOUNTED;
3335 }
79072805 3336 mg->mg_type = how;
565764a8 3337 mg->mg_len = namlen;
1edc1566 3338 if (name)
3339 if (namlen >= 0)
3340 mg->mg_ptr = savepvn(name, namlen);
c6ee37c5 3341 else if (namlen == HEf_SVKEY)
1edc1566 3342 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
1c846c1f 3343
79072805
LW		 3344 switch (how) {
3345 case 0:
22c35a8c 3346 mg->mg_virtual = &PL_vtbl_sv;
79072805 3347 break;
a0d0e21e 3348 case 'A':
22c35a8c 3349 mg->mg_virtual = &PL_vtbl_amagic;
a0d0e21e
LW		 3350 break;
3351 case 'a':
22c35a8c 3352 mg->mg_virtual = &PL_vtbl_amagicelem;
a0d0e21e
LW		 3353 break;
3354 case 'c':
3355 mg->mg_virtual = 0;
3356 break;
79072805 3357 case 'B':
22c35a8c 3358 mg->mg_virtual = &PL_vtbl_bm;
79072805 3359 break;
6cef1e77 3360 case 'D':
22c35a8c 3361 mg->mg_virtual = &PL_vtbl_regdata;
6cef1e77
IZ		 3362 break;
3363 case 'd':
22c35a8c 3364 mg->mg_virtual = &PL_vtbl_regdatum;
6cef1e77 3365 break;
79072805 3366 case 'E':
22c35a8c 3367 mg->mg_virtual = &PL_vtbl_env;
79072805 3368 break;
55497cff 3369 case 'f':
22c35a8c 3370 mg->mg_virtual = &PL_vtbl_fm;
55497cff 3371 break;
79072805 3372 case 'e':
22c35a8c 3373 mg->mg_virtual = &PL_vtbl_envelem;
79072805 3374 break;
93a17b20 3375 case 'g':
22c35a8c 3376 mg->mg_virtual = &PL_vtbl_mglob;
93a17b20 3377 break;
463ee0b2 3378 case 'I':
22c35a8c 3379 mg->mg_virtual = &PL_vtbl_isa;
463ee0b2
LW		 3380 break;
3381 case 'i':
22c35a8c 3382 mg->mg_virtual = &PL_vtbl_isaelem;
463ee0b2 3383 break;
16660edb 3384 case 'k':
22c35a8c 3385 mg->mg_virtual = &PL_vtbl_nkeys;
16660edb 3386 break;
79072805 3387 case 'L':
a0d0e21e 3388 SvRMAGICAL_on(sv);
93a17b20
LW		 3389 mg->mg_virtual = 0;
3390 break;
3391 case 'l':
22c35a8c 3392 mg->mg_virtual = &PL_vtbl_dbline;
79072805 3393 break;
f93b4edd
MB		 3394#ifdef USE_THREADS
3395 case 'm':
22c35a8c 3396 mg->mg_virtual = &PL_vtbl_mutex;
f93b4edd
MB		 3397 break;
3398#endif /* USE_THREADS */
36477c24 3399#ifdef USE_LOCALE_COLLATE
bbce6d69 3400 case 'o':
22c35a8c 3401 mg->mg_virtual = &PL_vtbl_collxfrm;
bbce6d69 3402 break;
36477c24 3403#endif /* USE_LOCALE_COLLATE */
463ee0b2 3404 case 'P':
22c35a8c 3405 mg->mg_virtual = &PL_vtbl_pack;
463ee0b2
LW		 3406 break;
3407 case 'p':
a0d0e21e 3408 case 'q':
22c35a8c 3409 mg->mg_virtual = &PL_vtbl_packelem;
463ee0b2 3410 break;
c277df42 3411 case 'r':
22c35a8c 3412 mg->mg_virtual = &PL_vtbl_regexp;
c277df42 3413 break;
79072805 3414 case 'S':
22c35a8c 3415 mg->mg_virtual = &PL_vtbl_sig;
79072805
LW		 3416 break;
3417 case 's':
22c35a8c 3418 mg->mg_virtual = &PL_vtbl_sigelem;
79072805 3419 break;
463ee0b2 3420 case 't':
22c35a8c 3421 mg->mg_virtual = &PL_vtbl_taint;
565764a8 3422 mg->mg_len = 1;
463ee0b2 3423 break;
79072805 3424 case 'U':
22c35a8c 3425 mg->mg_virtual = &PL_vtbl_uvar;
79072805
LW		 3426 break;
3427 case 'v':
22c35a8c 3428 mg->mg_virtual = &PL_vtbl_vec;
79072805
LW		 3429 break;
3430 case 'x':
22c35a8c 3431 mg->mg_virtual = &PL_vtbl_substr;
79072805 3432 break;
5f05dabc 3433 case 'y':
22c35a8c 3434 mg->mg_virtual = &PL_vtbl_defelem;
5f05dabc 3435 break;
79072805 3436 case '*':
22c35a8c 3437 mg->mg_virtual = &PL_vtbl_glob;
79072805
LW		 3438 break;
3439 case '#':
22c35a8c 3440 mg->mg_virtual = &PL_vtbl_arylen;
79072805 3441 break;
a0d0e21e 3442 case '.':
22c35a8c 3443 mg->mg_virtual = &PL_vtbl_pos;
a0d0e21e 3444 break;
810b8aa5
GS		 3445 case '<':
3446 mg->mg_virtual = &PL_vtbl_backref;
3447 break;
4633a7c4
LW		 3448 case '~': /* Reserved for use by extensions not perl internals. */
3449 /* Useful for attaching extension internal data to perl vars. */
3450 /* Note that multiple extensions may clash if magical scalars */
3451 /* etc holding private data from one are passed to another. */
3452 SvRMAGICAL_on(sv);
a0d0e21e 3453 break;
79072805 3454 default:
cea2e8a9 3455 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
463ee0b2 3456 }
8990e307
LW		 3457 mg_magical(sv);
3458 if (SvGMAGICAL(sv))
3459 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
463ee0b2
LW		 3460}
3461
c461cf8f
JH		 3462/*
3463=for apidoc sv_unmagic
3464
3465Removes magic from an SV.
3466
3467=cut
3468*/
3469
463ee0b2 3470int
864dbfa3 3471Perl_sv_unmagic(pTHX_ SV *sv, int type)
463ee0b2
LW		 3472{
3473 MAGIC* mg;
3474 MAGIC** mgp;
91bba347 3475 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
463ee0b2
LW		 3476 return 0;
3477 mgp = &SvMAGIC(sv);
3478 for (mg = *mgp; mg; mg = *mgp) {
3479 if (mg->mg_type == type) {
3480 MGVTBL* vtbl = mg->mg_virtual;
3481 *mgp = mg->mg_moremagic;
1d7c1841 3482 if (vtbl && vtbl->svt_free)
fc0dc3b3 3483 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
463ee0b2 3484 if (mg->mg_ptr && mg->mg_type != 'g')
565764a8 3485 if (mg->mg_len >= 0)
1edc1566 3486 Safefree(mg->mg_ptr);
565764a8 3487 else if (mg->mg_len == HEf_SVKEY)
1edc1566 3488 SvREFCNT_dec((SV*)mg->mg_ptr);
a0d0e21e
LW		 3489 if (mg->mg_flags & MGf_REFCOUNTED)
3490 SvREFCNT_dec(mg->mg_obj);
463ee0b2
LW		 3491 Safefree(mg);
3492 }
3493 else
3494 mgp = &mg->mg_moremagic;
79072805 3495 }
91bba347 3496 if (!SvMAGIC(sv)) {
463ee0b2 3497 SvMAGICAL_off(sv);
8990e307 3498 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
463ee0b2
LW		 3499 }
3500
3501 return 0;
79072805
LW		 3502}
3503
c461cf8f
JH		 3504/*
3505=for apidoc sv_rvweaken
3506
3507Weaken a reference.
3508
3509=cut
3510*/
3511
810b8aa5 3512SV *
864dbfa3 3513Perl_sv_rvweaken(pTHX_ SV *sv)
810b8aa5
GS		 3514{
3515 SV *tsv;
3516 if (!SvOK(sv)) /* let undefs pass */
3517 return sv;
3518 if (!SvROK(sv))
cea2e8a9 3519 Perl_croak(aTHX_ "Can't weaken a nonreference");
810b8aa5
GS		 3520 else if (SvWEAKREF(sv)) {
3521 dTHR;
3522 if (ckWARN(WARN_MISC))
cea2e8a9 3523 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
810b8aa5
GS		 3524 return sv;
3525 }
3526 tsv = SvRV(sv);
3527 sv_add_backref(tsv, sv);
3528 SvWEAKREF_on(sv);
1c846c1f 3529 SvREFCNT_dec(tsv);
810b8aa5
GS		 3530 return sv;
3531}
3532
3533STATIC void
cea2e8a9 3534S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
810b8aa5
GS		 3535{
3536 AV *av;
3537 MAGIC *mg;
3538 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3539 av = (AV*)mg->mg_obj;
3540 else {
3541 av = newAV();
3542 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3543 SvREFCNT_dec(av); /* for sv_magic */
3544 }
3545 av_push(av,sv);
3546}
3547
1c846c1f 3548STATIC void
cea2e8a9 3549S_sv_del_backref(pTHX_ SV *sv)
810b8aa5
GS		 3550{
3551 AV *av;
3552 SV **svp;
3553 I32 i;
3554 SV *tsv = SvRV(sv);
3555 MAGIC *mg;
3556 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
cea2e8a9 3557 Perl_croak(aTHX_ "panic: del_backref");
810b8aa5
GS		 3558 av = (AV *)mg->mg_obj;
3559 svp = AvARRAY(av);
3560 i = AvFILLp(av);
3561 while (i >= 0) {
3562 if (svp[i] == sv) {
3563 svp[i] = &PL_sv_undef; /* XXX */
3564 }
3565 i--;
3566 }
3567}
3568
954c1994
GS		 3569/*
3570=for apidoc sv_insert
3571
3572Inserts a string at the specified offset/length within the SV. Similar to
3573the Perl substr() function.
3574
3575=cut
3576*/
3577
79072805 3578void
864dbfa3 3579Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
79072805
LW		 3580{
3581 register char *big;
3582 register char *mid;
3583 register char *midend;
3584 register char *bigend;
3585 register I32 i;
6ff81951 3586 STRLEN curlen;
1c846c1f 3587
79072805 3588
8990e307 3589 if (!bigstr)
cea2e8a9 3590 Perl_croak(aTHX_ "Can't modify non-existent substring");
6ff81951 3591 SvPV_force(bigstr, curlen);
60fa28ff 3592 (void)SvPOK_only_UTF8(bigstr);
6ff81951
GS		 3593 if (offset + len > curlen) {
3594 SvGROW(bigstr, offset+len+1);
3595 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3596 SvCUR_set(bigstr, offset+len);
3597 }
79072805 3598
69b47968 3599 SvTAINT(bigstr);
79072805
LW		 3600 i = littlelen - len;
3601 if (i > 0) { /* string might grow */
a0d0e21e 3602 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
79072805
LW		 3603 mid = big + offset + len;
3604 midend = bigend = big + SvCUR(bigstr);
3605 bigend += i;
3606 *bigend = '\0';
3607 while (midend > mid) /* shove everything down */
3608 *--bigend = *--midend;
3609 Move(little,big+offset,littlelen,char);
3610 SvCUR(bigstr) += i;
3611 SvSETMAGIC(bigstr);
3612 return;
3613 }
3614 else if (i == 0) {
463ee0b2 3615 Move(little,SvPVX(bigstr)+offset,len,char);
79072805
LW		 3616 SvSETMAGIC(bigstr);
3617 return;
3618 }
3619
463ee0b2 3620 big = SvPVX(bigstr);
79072805
LW		 3621 mid = big + offset;
3622 midend = mid + len;
3623 bigend = big + SvCUR(bigstr);
3624
3625 if (midend > bigend)
cea2e8a9 3626 Perl_croak(aTHX_ "panic: sv_insert");
79072805
LW		 3627
3628 if (mid - big > bigend - midend) { /* faster to shorten from end */
3629 if (littlelen) {
3630 Move(little, mid, littlelen,char);
3631 mid += littlelen;
3632 }
3633 i = bigend - midend;
3634 if (i > 0) {
3635 Move(midend, mid, i,char);
3636 mid += i;
3637 }
3638 *mid = '\0';
3639 SvCUR_set(bigstr, mid - big);
3640 }
3641 /*SUPPRESS 560*/
155aba94 3642 else if ((i = mid - big)) { /* faster from front */
79072805
LW		 3643 midend -= littlelen;
3644 mid = midend;
3645 sv_chop(bigstr,midend-i);
3646 big += i;
3647 while (i--)
3648 *--midend = *--big;
3649 if (littlelen)
3650 Move(little, mid, littlelen,char);
3651 }
3652 else if (littlelen) {
3653 midend -= littlelen;
3654 sv_chop(bigstr,midend);
3655 Move(little,midend,littlelen,char);
3656 }
3657 else {
3658 sv_chop(bigstr,midend);
3659 }
3660 SvSETMAGIC(bigstr);
3661}
3662
c461cf8f
JH		 3663/*
3664=for apidoc sv_replace
3665
3666Make the first argument a copy of the second, then delete the original.
3667
3668=cut
3669*/
79072805
LW		 3670
3671void
864dbfa3 3672Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
79072805 3673{
0453d815 3674 dTHR;
79072805 3675 U32 refcnt = SvREFCNT(sv);
2213622d 3676 SV_CHECK_THINKFIRST(sv);
0453d815
PM		 3677 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3678 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
93a17b20 3679 if (SvMAGICAL(sv)) {
a0d0e21e
LW		 3680 if (SvMAGICAL(nsv))
3681 mg_free(nsv);
3682 else
3683 sv_upgrade(nsv, SVt_PVMG);
93a17b20 3684 SvMAGIC(nsv) = SvMAGIC(sv);
a0d0e21e 3685 SvFLAGS(nsv) |= SvMAGICAL(sv);
93a17b20
LW		 3686 SvMAGICAL_off(sv);
3687 SvMAGIC(sv) = 0;
3688 }
79072805
LW		 3689 SvREFCNT(sv) = 0;
3690 sv_clear(sv);
477f5d66 3691 assert(!SvREFCNT(sv));
79072805
LW		 3692 StructCopy(nsv,sv,SV);
3693 SvREFCNT(sv) = refcnt;
1edc1566 3694 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
463ee0b2 3695 del_SV(nsv);
79072805
LW		 3696}
3697
c461cf8f
JH		 3698/*
3699=for apidoc sv_clear
3700
3701Clear an SV, making it empty. Does not free the memory used by the SV
3702itself.
3703
3704=cut
3705*/
3706
79072805 3707void
864dbfa3 3708Perl_sv_clear(pTHX_ register SV *sv)
79072805 3709{
ec12f114 3710 HV* stash;
79072805
LW		 3711 assert(sv);
3712 assert(SvREFCNT(sv) == 0);
3713
ed6116ce 3714 if (SvOBJECT(sv)) {
e858de61 3715 dTHR;
3280af22 3716 if (PL_defstash) { /* Still have a symbol table? */
4e35701f 3717 djSP;
8ebc5c01 3718 GV* destructor;
837485b6 3719 SV tmpref;
a0d0e21e 3720
837485b6
GS		 3721 Zero(&tmpref, 1, SV);
3722 sv_upgrade(&tmpref, SVt_RV);
3723 SvROK_on(&tmpref);
3724 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3725 SvREFCNT(&tmpref) = 1;
8ebc5c01 3726
4e8e7886
GS		 3727 do {
3728 stash = SvSTASH(sv);
3729 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3730 if (destructor) {
3731 ENTER;
e788e7d3 3732 PUSHSTACKi(PERLSI_DESTROY);
837485b6 3733 SvRV(&tmpref) = SvREFCNT_inc(sv);
4e8e7886
GS		 3734 EXTEND(SP, 2);
3735 PUSHMARK(SP);
837485b6 3736 PUSHs(&tmpref);
4e8e7886 3737 PUTBACK;
864dbfa3
GS		 3738 call_sv((SV*)GvCV(destructor),
3739 G_DISCARD|G_EVAL|G_KEEPERR);
4e8e7886 3740 SvREFCNT(sv)--;
d3acc0f7 3741 POPSTACK;
3095d977 3742 SPAGAIN;
4e8e7886
GS		 3743 LEAVE;
3744 }
3745 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
8ebc5c01 3746
837485b6 3747 del_XRV(SvANY(&tmpref));
6f44e0a4
JP		 3748
3749 if (SvREFCNT(sv)) {
3750 if (PL_in_clean_objs)
cea2e8a9 3751 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
6f44e0a4
JP		 3752 HvNAME(stash));
3753 /* DESTROY gave object new lease on life */
3754 return;
3755 }
a0d0e21e 3756 }
4e8e7886 3757
a0d0e21e 3758 if (SvOBJECT(sv)) {
4e8e7886 3759 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
a0d0e21e
LW		 3760 SvOBJECT_off(sv); /* Curse the object. */
3761 if (SvTYPE(sv) != SVt_PVIO)
3280af22 3762 --PL_sv_objcount; /* XXX Might want something more general */
a0d0e21e 3763 }
463ee0b2 3764 }
c07a80fd 3765 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
a0d0e21e 3766 mg_free(sv);
ec12f114 3767 stash = NULL;
79072805 3768 switch (SvTYPE(sv)) {
8990e307 3769 case SVt_PVIO:
df0bd2f4
GS		 3770 if (IoIFP(sv) &&
3771 IoIFP(sv) != PerlIO_stdin() &&
5f05dabc 3772 IoIFP(sv) != PerlIO_stdout() &&
3773 IoIFP(sv) != PerlIO_stderr())
93578b34 3774 {
f2b5be74 3775 io_close((IO*)sv, FALSE);
93578b34 3776 }
1d7c1841 3777 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
1236053a 3778 PerlDir_close(IoDIRP(sv));
1d7c1841 3779 IoDIRP(sv) = (DIR*)NULL;
8990e307
LW		 3780 Safefree(IoTOP_NAME(sv));
3781 Safefree(IoFMT_NAME(sv));
3782 Safefree(IoBOTTOM_NAME(sv));
a0d0e21e 3783 /* FALL THROUGH */
79072805 3784 case SVt_PVBM:
a0d0e21e 3785 goto freescalar;
79072805 3786 case SVt_PVCV:
748a9306 3787 case SVt_PVFM:
85e6fe83 3788 cv_undef((CV*)sv);
a0d0e21e 3789 goto freescalar;
79072805 3790 case SVt_PVHV:
85e6fe83 3791 hv_undef((HV*)sv);
a0d0e21e 3792 break;
79072805 3793 case SVt_PVAV:
85e6fe83 3794 av_undef((AV*)sv);
a0d0e21e 3795 break;
02270b4e
GS		 3796 case SVt_PVLV:
3797 SvREFCNT_dec(LvTARG(sv));
3798 goto freescalar;
a0d0e21e 3799 case SVt_PVGV:
1edc1566 3800 gp_free((GV*)sv);
a0d0e21e 3801 Safefree(GvNAME(sv));
ec12f114
JPC		 3802 /* cannot decrease stash refcount yet, as we might recursively delete
3803 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3804 of stash until current sv is completely gone.
3805 -- JohnPC, 27 Mar 1998 */
3806 stash = GvSTASH(sv);
a0d0e21e 3807 /* FALL THROUGH */
79072805 3808 case SVt_PVMG:
79072805
LW		 3809 case SVt_PVNV:
3810 case SVt_PVIV:
a0d0e21e
LW		 3811 freescalar:
3812 (void)SvOOK_off(sv);
79072805
LW		 3813 /* FALL THROUGH */
3814 case SVt_PV:
a0d0e21e 3815 case SVt_RV:
810b8aa5
GS		 3816 if (SvROK(sv)) {
3817 if (SvWEAKREF(sv))
3818 sv_del_backref(sv);
3819 else
3820 SvREFCNT_dec(SvRV(sv));
3821 }
1edc1566 3822 else if (SvPVX(sv) && SvLEN(sv))
463ee0b2 3823 Safefree(SvPVX(sv));
1c846c1f
NIS		 3824 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3825 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3826 SvFAKE_off(sv);
3827 }
79072805 3828 break;
a0d0e21e 3829/*
79072805 3830 case SVt_NV:
79072805 3831 case SVt_IV:
79072805
LW		 3832 case SVt_NULL:
3833 break;
a0d0e21e 3834*/
79072805
LW		 3835 }
3836
3837 switch (SvTYPE(sv)) {
3838 case SVt_NULL:
3839 break;
79072805
LW		 3840 case SVt_IV:
3841 del_XIV(SvANY(sv));
3842 break;
3843 case SVt_NV:
3844 del_XNV(SvANY(sv));
3845 break;
ed6116ce
LW		 3846 case SVt_RV:
3847 del_XRV(SvANY(sv));
3848 break;
79072805
LW		 3849 case SVt_PV:
3850 del_XPV(SvANY(sv));
3851 break;
3852 case SVt_PVIV:
3853 del_XPVIV(SvANY(sv));
3854 break;
3855 case SVt_PVNV:
3856 del_XPVNV(SvANY(sv));
3857 break;
3858 case SVt_PVMG:
3859 del_XPVMG(SvANY(sv));
3860 break;
3861 case SVt_PVLV:
3862 del_XPVLV(SvANY(sv));
3863 break;
3864 case SVt_PVAV:
3865 del_XPVAV(SvANY(sv));
3866 break;
3867 case SVt_PVHV:
3868 del_XPVHV(SvANY(sv));
3869 break;
3870 case SVt_PVCV:
3871 del_XPVCV(SvANY(sv));
3872 break;
3873 case SVt_PVGV:
3874 del_XPVGV(SvANY(sv));
ec12f114
JPC		 3875 /* code duplication for increased performance. */
3876 SvFLAGS(sv) &= SVf_BREAK;
3877 SvFLAGS(sv) |= SVTYPEMASK;
3878 /* decrease refcount of the stash that owns this GV, if any */
3879 if (stash)
3880 SvREFCNT_dec(stash);
3881 return; /* not break, SvFLAGS reset already happened */
79072805
LW		 3882 case SVt_PVBM:
3883 del_XPVBM(SvANY(sv));
3884 break;
3885 case SVt_PVFM:
3886 del_XPVFM(SvANY(sv));
3887 break;
8990e307
LW		 3888 case SVt_PVIO:
3889 del_XPVIO(SvANY(sv));
3890 break;
79072805 3891 }
a0d0e21e 3892 SvFLAGS(sv) &= SVf_BREAK;
8990e307 3893 SvFLAGS(sv) |= SVTYPEMASK;
79072805
LW		 3894}
3895
3896SV *
864dbfa3 3897Perl_sv_newref(pTHX_ SV *sv)
79072805 3898{
463ee0b2 3899 if (sv)
dce16143 3900 ATOMIC_INC(SvREFCNT(sv));
79072805
LW		 3901 return sv;
3902}
3903
c461cf8f
JH		 3904/*
3905=for apidoc sv_free
3906
3907Free the memory used by an SV.
3908
3909=cut
3910*/
3911
79072805 3912void
864dbfa3 3913Perl_sv_free(pTHX_ SV *sv)
79072805 3914{
0453d815 3915 dTHR;
dce16143
MB		 3916 int refcount_is_zero;
3917
79072805
LW		 3918 if (!sv)
3919 return;
a0d0e21e
LW		 3920 if (SvREFCNT(sv) == 0) {
3921 if (SvFLAGS(sv) & SVf_BREAK)
3922 return;
3280af22 3923 if (PL_in_clean_all) /* All is fair */
1edc1566 3924 return;
d689ffdd
JP		 3925 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3926 /* make sure SvREFCNT(sv)==0 happens very seldom */
3927 SvREFCNT(sv) = (~(U32)0)/2;
3928 return;
3929 }
0453d815
PM		 3930 if (ckWARN_d(WARN_INTERNAL))
3931 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
79072805
LW		 3932 return;
3933 }
dce16143
MB		 3934 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3935 if (!refcount_is_zero)
8990e307 3936 return;
463ee0b2
LW		 3937#ifdef DEBUGGING
3938 if (SvTEMP(sv)) {
0453d815 3939 if (ckWARN_d(WARN_DEBUGGING))
f248d071 3940 Perl_warner(aTHX_ WARN_DEBUGGING,
1d7c1841
GS		 3941 "Attempt to free temp prematurely: SV 0x%"UVxf,
3942 PTR2UV(sv));
79072805 3943 return;
79072805 3944 }
463ee0b2 3945#endif
d689ffdd
JP		 3946 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3947 /* make sure SvREFCNT(sv)==0 happens very seldom */
3948 SvREFCNT(sv) = (~(U32)0)/2;
3949 return;
3950 }
79072805 3951 sv_clear(sv);
477f5d66
CS		 3952 if (! SvREFCNT(sv))
3953 del_SV(sv);
79072805
LW		 3954}
3955
954c1994
GS		 3956/*
3957=for apidoc sv_len
3958
3959Returns the length of the string in the SV. See also C<SvCUR>.
3960
3961=cut
3962*/
3963
79072805 3964STRLEN
864dbfa3 3965Perl_sv_len(pTHX_ register SV *sv)
79072805 3966{
748a9306 3967 char *junk;
463ee0b2 3968 STRLEN len;
79072805
LW		 3969
3970 if (!sv)
3971 return 0;
3972
8990e307 3973 if (SvGMAGICAL(sv))
565764a8 3974 len = mg_length(sv);
8990e307 3975 else
748a9306 3976 junk = SvPV(sv, len);
463ee0b2 3977 return len;
79072805
LW		 3978}
3979
c461cf8f
JH		 3980/*
3981=for apidoc sv_len_utf8
3982
3983Returns the number of characters in the string in an SV, counting wide
3984UTF8 bytes as a single character.
3985
3986=cut
3987*/
3988
a0ed51b3 3989STRLEN
864dbfa3 3990Perl_sv_len_utf8(pTHX_ register SV *sv)
a0ed51b3 3991{
dfe13c55
GS		 3992 U8 *s;
3993 U8 *send;
a0ed51b3
LW		 3994 STRLEN len;
3995
3996 if (!sv)
3997 return 0;
3998
3999#ifdef NOTYET
4000 if (SvGMAGICAL(sv))
4001 len = mg_length(sv);
4002 else
4003#endif
dfe13c55 4004 s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4005 send = s + len;
4006 len = 0;
4007 while (s < send) {
4008 s += UTF8SKIP(s);
4009 len++;
4010 }
4011 return len;
4012}
4013
4014void
864dbfa3 4015Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
a0ed51b3 4016{
dfe13c55
GS		 4017 U8 *start;
4018 U8 *s;
4019 U8 *send;
a0ed51b3
LW		 4020 I32 uoffset = *offsetp;
4021 STRLEN len;
4022
4023 if (!sv)
4024 return;
4025
dfe13c55 4026 start = s = (U8*)SvPV(sv, len);
a0ed51b3
LW		 4027 send = s + len;
4028 while (s < send && uoffset--)
4029 s += UTF8SKIP(s);
bb40f870
GA		 4030 if (s >= send)
4031 s = send;
a0ed51b3
LW		 4032 *offsetp = s - start;
4033 if (lenp) {
4034 I32 ulen = *lenp;
4035 start = s;
4036 while (s < send && ulen--)
4037 s += UTF8SKIP(s);
bb40f870
GA		 4038 if (s >= send)
4039 s = send;
a0ed51b3
LW		 4040 *lenp = s - start;
4041 }
4042 return;
4043}
4044
4045void
864dbfa3 4046Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
a0ed51b3 4047{
dfe13c55
GS		 4048 U8 *s;
4049 U8 *send;
a0ed51b3
LW		 4050 STRLEN len;
4051
4052 if (!sv)
4053 return;
4054
dfe13c55 4055 s = (U8*)SvPV(sv, len);
a0ed51b3 4056 if (len < *offsetp)
cea2e8a9 4057 Perl_croak(aTHX_ "panic: bad byte offset");
a0ed51b3
LW		 4058 send = s + *offsetp;
4059 len = 0;
4060 while (s < send) {
4061 s += UTF8SKIP(s);
4062 ++len;
4063 }
4064 if (s != send) {
0453d815 4065 dTHR;
1c846c1f 4066 if (ckWARN_d(WARN_UTF8))
0453d815 4067 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
a0ed51b3
LW		 4068 --len;
4069 }
4070 *offsetp = len;
4071 return;
4072}
4073
954c1994
GS		 4074/*
4075=for apidoc sv_eq
4076
4077Returns a boolean indicating whether the strings in the two SVs are
4078identical.
4079
4080=cut
4081*/
4082
79072805 4083I32
e01b9e88 4084Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
79072805
LW		 4085{
4086 char *pv1;
463ee0b2 4087 STRLEN cur1;
79072805 4088 char *pv2;
463ee0b2 4089 STRLEN cur2;
e01b9e88
SC		 4090 I32 eq = 0;
4091 bool pv1tmp = FALSE;
4092 bool pv2tmp = FALSE;
79072805 4093
e01b9e88 4094 if (!sv1) {
79072805
LW		 4095 pv1 = "";
4096 cur1 = 0;
4097 }
463ee0b2 4098 else
e01b9e88 4099 pv1 = SvPV(sv1, cur1);
79072805 4100
e01b9e88
SC		 4101 if (!sv2){
4102 pv2 = "";
4103 cur2 = 0;
92d29cee 4104 }
e01b9e88
SC		 4105 else
4106 pv2 = SvPV(sv2, cur2);
79072805 4107
e01b9e88 4108 /* do not utf8ize the comparands as a side-effect */
7bbb0251 4109 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
e01b9e88
SC		 4110 if (SvUTF8(sv1)) {
4111 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4112 pv2tmp = TRUE;
4113 }
4114 else {
4115 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4116 pv1tmp = TRUE;
4117 }
4118 }
79072805 4119
e01b9e88
SC		 4120 if (cur1 == cur2)
4121 eq = memEQ(pv1, pv2, cur1);
4122
4123 if (pv1tmp)
4124 Safefree(pv1);
4125 if (pv2tmp)
4126 Safefree(pv2);
4127
4128 return eq;
79072805
LW		 4129}
4130
954c1994
GS		 4131/*
4132=for apidoc sv_cmp
4133
4134Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4135string in C<sv1> is less than, equal to, or greater than the string in
4136C<sv2>.
4137
4138=cut
4139*/
4140
79072805 4141I32
e01b9e88 4142Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
79072805 4143{
560a288e
GS		 4144 STRLEN cur1, cur2;
4145 char *pv1, *pv2;
1c846c1f 4146 I32 cmp;
e01b9e88
SC		 4147 bool pv1tmp = FALSE;
4148 bool pv2tmp = FALSE;
560a288e 4149
e01b9e88
SC		 4150 if (!sv1) {
4151 pv1 = "";
560a288e
GS		 4152 cur1 = 0;
4153 }
e01b9e88
SC		 4154 else
4155 pv1 = SvPV(sv1, cur1);
560a288e 4156
e01b9e88
SC		 4157 if (!sv2){
4158 pv2 = "";
560a288e
GS		 4159 cur2 = 0;
4160 }
e01b9e88
SC		 4161 else
4162 pv2 = SvPV(sv2, cur2);
79072805 4163
e01b9e88
SC		 4164 /* do not utf8ize the comparands as a side-effect */
4165 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4166 if (SvUTF8(sv1)) {
4167 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4168 pv2tmp = TRUE;
4169 }
4170 else {
4171 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4172 pv1tmp = TRUE;
4173 }
4174 }
79072805 4175
e01b9e88
SC		 4176 if (!cur1) {
4177 cmp = cur2 ? -1 : 0;
4178 } else if (!cur2) {
4179 cmp = 1;
4180 } else {
4181 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4182
4183 if (retval) {
4184 cmp = retval < 0 ? -1 : 1;
4185 } else if (cur1 == cur2) {
4186 cmp = 0;
4187 } else {
4188 cmp = cur1 < cur2 ? -1 : 1;
4189 }
4190 }
16660edb 4191
e01b9e88
SC		 4192 if (pv1tmp)
4193 Safefree(pv1);
4194 if (pv2tmp)
4195 Safefree(pv2);
16660edb 4196
e01b9e88 4197 return cmp;
bbce6d69 4198}
16660edb 4199
c461cf8f
JH		 4200/*
4201=for apidoc sv_cmp_locale
4202
4203Compares the strings in two SVs in a locale-aware manner. See
4204L</sv_cmp_locale>
4205
4206=cut
4207*/
4208
bbce6d69 4209I32
864dbfa3 4210Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
bbce6d69 4211{
36477c24 4212#ifdef USE_LOCALE_COLLATE
16660edb 4213
bbce6d69 4214 char *pv1, *pv2;
4215 STRLEN len1, len2;
4216 I32 retval;
16660edb 4217
3280af22 4218 if (PL_collation_standard)
bbce6d69 4219 goto raw_compare;
16660edb 4220
bbce6d69 4221 len1 = 0;
8ac85365 4222 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
bbce6d69 4223 len2 = 0;
8ac85365 4224 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
16660edb 4225
bbce6d69 4226 if (!pv1 || !len1) {
4227 if (pv2 && len2)
4228 return -1;
4229 else
4230 goto raw_compare;
4231 }
4232 else {
4233 if (!pv2 || !len2)
4234 return 1;
4235 }
16660edb 4236
bbce6d69 4237 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
16660edb 4238
bbce6d69 4239 if (retval)
16660edb 4240 return retval < 0 ? -1 : 1;
4241
bbce6d69 4242 /*
4243 * When the result of collation is equality, that doesn't mean
4244 * that there are no differences -- some locales exclude some
4245 * characters from consideration. So to avoid false equalities,
4246 * we use the raw string as a tiebreaker.
4247 */
16660edb 4248
bbce6d69 4249 raw_compare:
4250 /* FALL THROUGH */
16660edb 4251
36477c24 4252#endif /* USE_LOCALE_COLLATE */
16660edb 4253
bbce6d69 4254 return sv_cmp(sv1, sv2);
4255}
79072805 4256
36477c24 4257#ifdef USE_LOCALE_COLLATE
7a4c00b4 4258/*
4259 * Any scalar variable may carry an 'o' magic that contains the
4260 * scalar data of the variable transformed to such a format that
4261 * a normal memory comparison can be used to compare the data
4262 * according to the locale settings.
4263 */
bbce6d69 4264char *
864dbfa3 4265Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
bbce6d69 4266{
7a4c00b4 4267 MAGIC *mg;
16660edb 4268
8ac85365 4269 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
3280af22 4270 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
bbce6d69 4271 char *s, *xf;
4272 STRLEN len, xlen;
4273
7a4c00b4 4274 if (mg)
4275 Safefree(mg->mg_ptr);
bbce6d69 4276 s = SvPV(sv, len);
4277 if ((xf = mem_collxfrm(s, len, &xlen))) {
ff0cee69 4278 if (SvREADONLY(sv)) {
4279 SAVEFREEPV(xf);
4280 *nxp = xlen;
3280af22 4281 return xf + sizeof(PL_collation_ix);
ff0cee69 4282 }
7a4c00b4 4283 if (! mg) {
4284 sv_magic(sv, 0, 'o', 0, 0);
4285 mg = mg_find(sv, 'o');
4286 assert(mg);
bbce6d69 4287 }
7a4c00b4 4288 mg->mg_ptr = xf;
565764a8 4289 mg->mg_len = xlen;
7a4c00b4 4290 }
4291 else {
ff0cee69 4292 if (mg) {
4293 mg->mg_ptr = NULL;
565764a8 4294 mg->mg_len = -1;
ff0cee69 4295 }
bbce6d69 4296 }
4297 }
7a4c00b4 4298 if (mg && mg->mg_ptr) {
565764a8 4299 *nxp = mg->mg_len;
3280af22 4300 return mg->mg_ptr + sizeof(PL_collation_ix);
bbce6d69 4301 }
4302 else {
4303 *nxp = 0;
4304 return NULL;
16660edb 4305 }
79072805
LW		 4306}
4307
36477c24 4308#endif /* USE_LOCALE_COLLATE */
bbce6d69 4309
c461cf8f
JH		 4310/*
4311=for apidoc sv_gets
4312
4313Get a line from the filehandle and store it into the SV, optionally
4314appending to the currently-stored string.
4315
4316=cut
4317*/
4318
79072805 4319char *
864dbfa3 4320Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
79072805 4321{
aeea060c 4322 dTHR;
c07a80fd 4323 char *rsptr;
4324 STRLEN rslen;
4325 register STDCHAR rslast;
4326 register STDCHAR *bp;
4327 register I32 cnt;
4328 I32 i;
4329
2213622d 4330 SV_CHECK_THINKFIRST(sv);
6fc92669 4331 (void)SvUPGRADE(sv, SVt_PV);
99491443 4332
ff68c719 4333 SvSCREAM_off(sv);
c07a80fd 4334
3280af22 4335 if (RsSNARF(PL_rs)) {
c07a80fd 4336 rsptr = NULL;
4337 rslen = 0;
4338 }
3280af22 4339 else if (RsRECORD(PL_rs)) {
5b2b9c68
HM		 4340 I32 recsize, bytesread;
4341 char *buffer;
4342
4343 /* Grab the size of the record we're getting */
3280af22 4344 recsize = SvIV(SvRV(PL_rs));
5b2b9c68 4345 (void)SvPOK_only(sv); /* Validate pointer */
e670df4e 4346 buffer = SvGROW(sv, recsize + 1);
5b2b9c68
HM		 4347 /* Go yank in */
4348#ifdef VMS
4349 /* VMS wants read instead of fread, because fread doesn't respect */
4350 /* RMS record boundaries. This is not necessarily a good thing to be */
4351 /* doing, but we've got no other real choice */
4352 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4353#else
4354 bytesread = PerlIO_read(fp, buffer, recsize);
4355#endif
4356 SvCUR_set(sv, bytesread);
e670df4e 4357 buffer[bytesread] = '\0';
5b2b9c68
HM		 4358 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4359 }
3280af22 4360 else if (RsPARA(PL_rs)) {
c07a80fd 4361 rsptr = "\n\n";
4362 rslen = 2;
4363 }
4364 else
3280af22 4365 rsptr = SvPV(PL_rs, rslen);
c07a80fd 4366 rslast = rslen ? rsptr[rslen - 1] : '\0';
4367
3280af22 4368 if (RsPARA(PL_rs)) { /* have to do this both before and after */
79072805 4369 do { /* to make sure file boundaries work right */
760ac839 4370 if (PerlIO_eof(fp))
a0d0e21e 4371 return 0;
760ac839 4372 i = PerlIO_getc(fp);
79072805 4373 if (i != '\n') {
a0d0e21e
LW		 4374 if (i == -1)
4375 return 0;
760ac839 4376 PerlIO_ungetc(fp,i);
79072805
LW		 4377 break;
4378 }
4379 } while (i != EOF);
4380 }
c07a80fd 4381
760ac839
LW		 4382 /* See if we know enough about I/O mechanism to cheat it ! */
4383
4384 /* This used to be #ifdef test - it is made run-time test for ease
1c846c1f 4385 of abstracting out stdio interface. One call should be cheap
760ac839
LW		 4386 enough here - and may even be a macro allowing compile
4387 time optimization.
4388 */
4389
4390 if (PerlIO_fast_gets(fp)) {
4391
4392 /*
4393 * We're going to steal some values from the stdio struct
4394 * and put EVERYTHING in the innermost loop into registers.
4395 */
4396 register STDCHAR *ptr;
4397 STRLEN bpx;
4398 I32 shortbuffered;
4399
16660edb 4400#if defined(VMS) && defined(PERLIO_IS_STDIO)
4401 /* An ungetc()d char is handled separately from the regular
4402 * buffer, so we getc() it back out and stuff it in the buffer.
4403 */
4404 i = PerlIO_getc(fp);
4405 if (i == EOF) return 0;
4406 *(--((*fp)->_ptr)) = (unsigned char) i;
4407 (*fp)->_cnt++;
4408#endif
c07a80fd 4409
c2960299 4410 /* Here is some breathtakingly efficient cheating */
c07a80fd 4411
a20bf0c3 4412 cnt = PerlIO_get_cnt(fp); /* get count into register */
a0d0e21e 4413 (void)SvPOK_only(sv); /* validate pointer */
79072805
LW		 4414 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4415 if (cnt > 80 && SvLEN(sv) > append) {
4416 shortbuffered = cnt - SvLEN(sv) + append + 1;
4417 cnt -= shortbuffered;
4418 }
4419 else {
4420 shortbuffered = 0;
bbce6d69 4421 /* remember that cnt can be negative */
4422 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
79072805
LW		 4423 }
4424 }
4425 else
4426 shortbuffered = 0;
c07a80fd 4427 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
a20bf0c3 4428 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
16660edb 4429 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4430 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
16660edb 4431 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4432 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4433 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4434 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
79072805
LW		 4435 for (;;) {
4436 screamer:
93a17b20 4437 if (cnt > 0) {
c07a80fd 4438 if (rslen) {
760ac839
LW		 4439 while (cnt > 0) { /* this | eat */
4440 cnt--;
c07a80fd 4441 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4442 goto thats_all_folks; /* screams | sed :-) */
4443 }
4444 }
4445 else {
1c846c1f
NIS		 4446 Copy(ptr, bp, cnt, char); /* this | eat */
4447 bp += cnt; /* screams | dust */
c07a80fd 4448 ptr += cnt; /* louder | sed :-) */
a5f75d66 4449 cnt = 0;
93a17b20 4450 }
79072805
LW		 4451 }
4452
748a9306 4453 if (shortbuffered) { /* oh well, must extend */
79072805
LW		 4454 cnt = shortbuffered;
4455 shortbuffered = 0;
c07a80fd 4456 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4457 SvCUR_set(sv, bpx);
4458 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
c07a80fd 4459 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
79072805
LW		 4460 continue;
4461 }
4462
16660edb 4463 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841
GS		 4464 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4465 PTR2UV(ptr),(long)cnt));
a20bf0c3 4466 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
16660edb 4467 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4468 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4469 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4470 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
1c846c1f 4471 /* This used to call 'filbuf' in stdio form, but as that behaves like
774d564b 4472 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4473 another abstraction. */
760ac839 4474 i = PerlIO_getc(fp); /* get more characters */
16660edb 4475 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4476 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4477 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4478 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
a20bf0c3
JH		 4479 cnt = PerlIO_get_cnt(fp);
4480 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
16660edb 4481 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4482 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
79072805 4483
748a9306
LW		 4484 if (i == EOF) /* all done for ever? */
4485 goto thats_really_all_folks;
4486
c07a80fd 4487 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
79072805
LW		 4488 SvCUR_set(sv, bpx);
4489 SvGROW(sv, bpx + cnt + 2);
c07a80fd 4490 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4491
760ac839 4492 *bp++ = i; /* store character from PerlIO_getc */
79072805 4493
c07a80fd 4494 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
79072805 4495 goto thats_all_folks;
79072805
LW		 4496 }
4497
4498thats_all_folks:
c07a80fd 4499 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
36477c24 4500 memNE((char*)bp - rslen, rsptr, rslen))
760ac839 4501 goto screamer; /* go back to the fray */
79072805
LW		 4502thats_really_all_folks:
4503 if (shortbuffered)
4504 cnt += shortbuffered;
16660edb 4505 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4506 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
a20bf0c3 4507 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
16660edb 4508 DEBUG_P(PerlIO_printf(Perl_debug_log,
1d7c1841 4509 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
1c846c1f 4510 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
1d7c1841 4511 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
79072805 4512 *bp = '\0';
760ac839 4513 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
16660edb 4514 DEBUG_P(PerlIO_printf(Perl_debug_log,
fb73857a 4515 "Screamer: done, len=%ld, string=|%.*s|\n",
4516 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
760ac839
LW		 4517 }
4518 else
79072805 4519 {
4d2c4e07 4520#ifndef EPOC
760ac839 4521 /*The big, slow, and stupid way */
c07a80fd 4522 STDCHAR buf[8192];
4d2c4e07
OF		 4523#else
4524 /* Need to work around EPOC SDK features */
4525 /* On WINS: MS VC5 generates calls to _chkstk, */
4526 /* if a `large' stack frame is allocated */
4527 /* gcc on MARM does not generate calls like these */
4528 STDCHAR buf[1024];
4529#endif
79072805 4530
760ac839 4531screamer2:
c07a80fd 4532 if (rslen) {
760ac839
LW		 4533 register STDCHAR *bpe = buf + sizeof(buf);
4534 bp = buf;
4535 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4536 ; /* keep reading */
4537 cnt = bp - buf;
c07a80fd 4538 }
4539 else {
760ac839 4540 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
16660edb 4541 /* Accomodate broken VAXC compiler, which applies U8 cast to
4542 * both args of ?: operator, causing EOF to change into 255
4543 */
4544 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
c07a80fd 4545 }
79072805
LW		 4546
4547 if (append)
760ac839 4548 sv_catpvn(sv, (char *) buf, cnt);
79072805 4549 else
760ac839 4550 sv_setpvn(sv, (char *) buf, cnt);
c07a80fd 4551
4552 if (i != EOF && /* joy */
4553 (!rslen ||
4554 SvCUR(sv) < rslen ||
36477c24 4555 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
79072805
LW		 4556 {
4557 append = -1;
63e4d877
CS		 4558 /*
4559 * If we're reading from a TTY and we get a short read,
4560 * indicating that the user hit his EOF character, we need
4561 * to notice it now, because if we try to read from the TTY
4562 * again, the EOF condition will disappear.
4563 *
4564 * The comparison of cnt to sizeof(buf) is an optimization
4565 * that prevents unnecessary calls to feof().
4566 *
4567 * - jik 9/25/96
4568 */
4569 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4570 goto screamer2;
79072805
LW		 4571 }
4572 }
4573
1c846c1f 4574 if (RsPARA(PL_rs)) { /* have to do this both before and after */
c07a80fd 4575 while (i != EOF) { /* to make sure file boundaries work right */
760ac839 4576 i = PerlIO_getc(fp);
79072805 4577 if (i != '\n') {
760ac839 4578 PerlIO_ungetc(fp,i);
79072805
LW		 4579 break;
4580 }
4581 }
4582 }
c07a80fd 4583
4584 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
79072805
LW		 4585}
4586
760ac839 4587
954c1994
GS		 4588/*
4589=for apidoc sv_inc
4590
4591Auto-increment of the value in the SV.
4592
4593=cut
4594*/
4595
79072805 4596void
864dbfa3 4597Perl_sv_inc(pTHX_ register SV *sv)
79072805
LW		 4598{
4599 register char *d;
463ee0b2 4600 int flags;
79072805
LW		 4601
4602 if (!sv)
4603 return;
b23a5f78
GB		 4604 if (SvGMAGICAL(sv))
4605 mg_get(sv);
ed6116ce 4606 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4607 if (SvREADONLY(sv)) {
4608 dTHR;
3280af22 4609 if (PL_curcop != &PL_compiling)
cea2e8a9 4610 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4611 }
a0d0e21e 4612 if (SvROK(sv)) {
b5be31e9 4613 IV i;
9e7bc3e8
JD		 4614 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4615 return;
56431972 4616 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4617 sv_unref(sv);
4618 sv_setiv(sv, i);
a0d0e21e 4619 }
ed6116ce 4620 }
8990e307 4621 flags = SvFLAGS(sv);
8990e307 4622 if (flags & SVp_NOK) {
a0d0e21e 4623 (void)SvNOK_only(sv);
55497cff 4624 SvNVX(sv) += 1.0;
4625 return;
4626 }
4627 if (flags & SVp_IOK) {
25da4f38
IZ		 4628 if (SvIsUV(sv)) {
4629 if (SvUVX(sv) == UV_MAX)
65202027 4630 sv_setnv(sv, (NV)UV_MAX + 1.0);
25da4f38
IZ		 4631 else
4632 (void)SvIOK_only_UV(sv);
4633 ++SvUVX(sv);
4634 } else {
4635 if (SvIVX(sv) == IV_MAX)
65202027 4636 sv_setnv(sv, (NV)IV_MAX + 1.0);
25da4f38
IZ		 4637 else {
4638 (void)SvIOK_only(sv);
4639 ++SvIVX(sv);
1c846c1f 4640 }
55497cff 4641 }
79072805
LW		 4642 return;
4643 }
8990e307 4644 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4633a7c4
LW		 4645 if ((flags & SVTYPEMASK) < SVt_PVNV)
4646 sv_upgrade(sv, SVt_NV);
463ee0b2 4647 SvNVX(sv) = 1.0;
a0d0e21e 4648 (void)SvNOK_only(sv);
79072805
LW		 4649 return;
4650 }
463ee0b2 4651 d = SvPVX(sv);
79072805
LW		 4652 while (isALPHA(*d)) d++;
4653 while (isDIGIT(*d)) d++;
4654 if (*d) {
097ee67d 4655 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
79072805
LW		 4656 return;
4657 }
4658 d--;
463ee0b2 4659 while (d >= SvPVX(sv)) {
79072805
LW		 4660 if (isDIGIT(*d)) {
4661 if (++*d <= '9')
4662 return;
4663 *(d--) = '0';
4664 }
4665 else {
9d116dd7
JH		 4666#ifdef EBCDIC
4667 /* MKS: The original code here died if letters weren't consecutive.
4668 * at least it didn't have to worry about non-C locales. The
4669 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
1c846c1f 4670 * arranged in order (although not consecutively) and that only
9d116dd7
JH		 4671 * [A-Za-z] are accepted by isALPHA in the C locale.
4672 */
4673 if (*d != 'z' && *d != 'Z') {
4674 do { ++*d; } while (!isALPHA(*d));
4675 return;
4676 }
4677 *(d--) -= 'z' - 'a';
4678#else
79072805
LW		 4679 ++*d;
4680 if (isALPHA(*d))
4681 return;
4682 *(d--) -= 'z' - 'a' + 1;
9d116dd7 4683#endif
79072805
LW		 4684 }
4685 }
4686 /* oh,oh, the number grew */
4687 SvGROW(sv, SvCUR(sv) + 2);
4688 SvCUR(sv)++;
463ee0b2 4689 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
79072805
LW		 4690 *d = d[-1];
4691 if (isDIGIT(d[1]))
4692 *d = '1';
4693 else
4694 *d = d[1];
4695}
4696
954c1994
GS		 4697/*
4698=for apidoc sv_dec
4699
4700Auto-decrement of the value in the SV.
4701
4702=cut
4703*/
4704
79072805 4705void
864dbfa3 4706Perl_sv_dec(pTHX_ register SV *sv)
79072805 4707{
463ee0b2
LW		 4708 int flags;
4709
79072805
LW		 4710 if (!sv)
4711 return;
b23a5f78
GB		 4712 if (SvGMAGICAL(sv))
4713 mg_get(sv);
ed6116ce 4714 if (SvTHINKFIRST(sv)) {
0f15f207
MB		 4715 if (SvREADONLY(sv)) {
4716 dTHR;
3280af22 4717 if (PL_curcop != &PL_compiling)
cea2e8a9 4718 Perl_croak(aTHX_ PL_no_modify);
0f15f207 4719 }
a0d0e21e 4720 if (SvROK(sv)) {
b5be31e9 4721 IV i;
9e7bc3e8
JD		 4722 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4723 return;
56431972 4724 i = PTR2IV(SvRV(sv));
b5be31e9
SM		 4725 sv_unref(sv);
4726 sv_setiv(sv, i);
a0d0e21e 4727 }
ed6116ce 4728 }
8990e307 4729 flags = SvFLAGS(sv);
8990e307 4730 if (flags & SVp_NOK) {
463ee0b2 4731 SvNVX(sv) -= 1.0;
a0d0e21e 4732 (void)SvNOK_only(sv);
79072805
LW		 4733 return;
4734 }
55497cff 4735 if (flags & SVp_IOK) {
25da4f38
IZ		 4736 if (SvIsUV(sv)) {
4737 if (SvUVX(sv) == 0) {
4738 (void)SvIOK_only(sv);
4739 SvIVX(sv) = -1;
4740 }
4741 else {
4742 (void)SvIOK_only_UV(sv);
4743 --SvUVX(sv);
1c846c1f 4744 }
25da4f38
IZ		 4745 } else {
4746 if (SvIVX(sv) == IV_MIN)
65202027 4747 sv_setnv(sv, (NV)IV_MIN - 1.0);
25da4f38
IZ		 4748 else {
4749 (void)SvIOK_only(sv);
4750 --SvIVX(sv);
1c846c1f 4751 }
55497cff 4752 }
4753 return;
4754 }
8990e307 4755 if (!(flags & SVp_POK)) {
4633a7c4
LW		 4756 if ((flags & SVTYPEMASK) < SVt_PVNV)
4757 sv_upgrade(sv, SVt_NV);
463ee0b2 4758 SvNVX(sv) = -1.0;
a0d0e21e 4759 (void)SvNOK_only(sv);
79072805
LW		 4760 return;
4761 }
097ee67d 4762 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
79072805
LW		 4763}
4764
954c1994
GS		 4765/*
4766=for apidoc sv_mortalcopy
4767
4768Creates a new SV which is a copy of the original SV. The new SV is marked
4769as mortal.
4770
4771=cut
4772*/
4773
79072805
LW		 4774/* Make a string that will exist for the duration of the expression
4775 * evaluation. Actually, it may have to last longer than that, but
4776 * hopefully we won't free it until it has been assigned to a
4777 * permanent location. */
4778
4779SV *
864dbfa3 4780Perl_sv_mortalcopy(pTHX_ SV *oldstr)
79072805 4781{
11343788 4782 dTHR;
463ee0b2 4783 register SV *sv;
79072805 4784
4561caa4 4785 new_SV(sv);
79072805 4786 sv_setsv(sv,oldstr);
677b06e3
GS		 4787 EXTEND_MORTAL(1);
4788 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307
LW		 4789 SvTEMP_on(sv);
4790 return sv;
4791}
4792
954c1994
GS		 4793/*
4794=for apidoc sv_newmortal
4795
4796Creates a new SV which is mortal. The reference count of the SV is set to 1.
4797
4798=cut
4799*/
4800
8990e307 4801SV *
864dbfa3 4802Perl_sv_newmortal(pTHX)
8990e307 4803{
11343788 4804 dTHR;
8990e307
LW		 4805 register SV *sv;
4806
4561caa4 4807 new_SV(sv);
8990e307 4808 SvFLAGS(sv) = SVs_TEMP;
677b06e3
GS		 4809 EXTEND_MORTAL(1);
4810 PL_tmps_stack[++PL_tmps_ix] = sv;
79072805
LW		 4811 return sv;
4812}
4813
954c1994
GS		 4814/*
4815=for apidoc sv_2mortal
4816
4817Marks an SV as mortal. The SV will be destroyed when the current context
4818ends.
4819
4820=cut
4821*/
4822
79072805
LW		 4823/* same thing without the copying */
4824
4825SV *
864dbfa3 4826Perl_sv_2mortal(pTHX_ register SV *sv)
79072805 4827{
11343788 4828 dTHR;
79072805
LW		 4829 if (!sv)
4830 return sv;
d689ffdd 4831 if (SvREADONLY(sv) && SvIMMORTAL(sv))
11162842 4832 return sv;
677b06e3
GS		 4833 EXTEND_MORTAL(1);
4834 PL_tmps_stack[++PL_tmps_ix] = sv;
8990e307 4835 SvTEMP_on(sv);
79072805
LW		 4836 return sv;
4837}
4838
954c1994
GS		 4839/*
4840=for apidoc newSVpv
4841
4842Creates a new SV and copies a string into it. The reference count for the
4843SV is set to 1. If C<len> is zero, Perl will compute the length using
4844strlen(). For efficiency, consider using C<newSVpvn> instead.
4845
4846=cut
4847*/
4848
79072805 4849SV *
864dbfa3 4850Perl_newSVpv(pTHX_ const char *s, STRLEN len)
79072805 4851{
463ee0b2 4852 register SV *sv;
79072805 4853
4561caa4 4854 new_SV(sv);
79072805
LW		 4855 if (!len)
4856 len = strlen(s);
4857 sv_setpvn(sv,s,len);
4858 return sv;
4859}
4860
954c1994
GS		 4861/*
4862=for apidoc newSVpvn
4863
4864Creates a new SV and copies a string into it. The reference count for the
1c846c1f 4865SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
954c1994
GS		 4866string. You are responsible for ensuring that the source string is at least
4867C<len> bytes long.
4868
4869=cut
4870*/
4871
9da1e3b5 4872SV *
864dbfa3 4873Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
9da1e3b5
MUN		 4874{
4875 register SV *sv;
4876
4877 new_SV(sv);
9da1e3b5
MUN		 4878 sv_setpvn(sv,s,len);
4879 return sv;
4880}
4881
1c846c1f
NIS		 4882/*
4883=for apidoc newSVpvn_share
4884
4885Creates a new SV and populates it with a string from
4886the string table. Turns on READONLY and FAKE.
4887The idea here is that as string table is used for shared hash
4888keys these strings will have SvPVX == HeKEY and hash lookup
4889will avoid string compare.
4890
4891=cut
4892*/
4893
4894SV *
4895Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4896{
4897 register SV *sv;
4898 if (!hash)
4899 PERL_HASH(hash, src, len);
4900 new_SV(sv);
4901 sv_upgrade(sv, SVt_PVIV);
4902 SvPVX(sv) = sharepvn(src, len, hash);
4903 SvCUR(sv) = len;
4904 SvUVX(sv) = hash;
4905 SvLEN(sv) = 0;
4906 SvREADONLY_on(sv);
4907 SvFAKE_on(sv);
4908 SvPOK_on(sv);
4909 return sv;
4910}
4911
cea2e8a9 4912#if defined(PERL_IMPLICIT_CONTEXT)
46fc3d4c 4913SV *
cea2e8a9 4914Perl_newSVpvf_nocontext(const char* pat, ...)
46fc3d4c 4915{
cea2e8a9 4916 dTHX;
46fc3d4c 4917 register SV *sv;
4918 va_list args;
46fc3d4c 4919 va_start(args, pat);
c5be433b 4920 sv = vnewSVpvf(pat, &args);
46fc3d4c 4921 va_end(args);
4922 return sv;
4923}
cea2e8a9 4924#endif
46fc3d4c 4925
954c1994
GS		 4926/*
4927=for apidoc newSVpvf
4928
4929Creates a new SV an initialize it with the string formatted like
4930C<sprintf>.
4931
4932=cut
4933*/
4934
cea2e8a9
GS		 4935SV *
4936Perl_newSVpvf(pTHX_ const char* pat, ...)
4937{
4938 register SV *sv;
4939 va_list args;
cea2e8a9 4940 va_start(args, pat);
c5be433b 4941 sv = vnewSVpvf(pat, &args);
cea2e8a9
GS		 4942 va_end(args);
4943 return sv;
4944}
46fc3d4c 4945
79072805 4946SV *
c5be433b
GS		 4947Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4948{
4949 register SV *sv;
4950 new_SV(sv);
4951 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4952 return sv;
4953}
4954
954c1994
GS		 4955/*
4956=for apidoc newSVnv
4957
4958Creates a new SV and copies a floating point value into it.
4959The reference count for the SV is set to 1.
4960
4961=cut
4962*/
4963
c5be433b 4964SV *
65202027 4965Perl_newSVnv(pTHX_ NV n)
79072805 4966{
463ee0b2 4967 register SV *sv;
79072805 4968
4561caa4 4969 new_SV(sv);
79072805
LW		 4970 sv_setnv(sv,n);
4971 return sv;
4972}
4973
954c1994
GS		 4974/*
4975=for apidoc newSViv
4976
4977Creates a new SV and copies an integer into it. The reference count for the
4978SV is set to 1.
4979
4980=cut
4981*/
4982
79072805 4983SV *
864dbfa3 4984Perl_newSViv(pTHX_ IV i)
79072805 4985{
463ee0b2 4986 register SV *sv;
79072805 4987
4561caa4 4988 new_SV(sv);
79072805
LW		 4989 sv_setiv(sv,i);
4990 return sv;
4991}
4992
954c1994 4993/*
1a3327fb
JH		 4994=for apidoc newSVuv
4995
4996Creates a new SV and copies an unsigned integer into it.
4997The reference count for the SV is set to 1.
4998
4999=cut
5000*/
5001
5002SV *
5003Perl_newSVuv(pTHX_ UV u)
5004{
5005 register SV *sv;
5006
5007 new_SV(sv);
5008 sv_setuv(sv,u);
5009 return sv;
5010}
5011
5012/*
954c1994
GS		 5013=for apidoc newRV_noinc
5014
5015Creates an RV wrapper for an SV. The reference count for the original
5016SV is B<not> incremented.
5017
5018=cut
5019*/
5020
2304df62 5021SV *
864dbfa3 5022Perl_newRV_noinc(pTHX_ SV *tmpRef)
2304df62 5023{
11343788 5024 dTHR;
2304df62
AD		 5025 register SV *sv;
5026
4561caa4 5027 new_SV(sv);
2304df62 5028 sv_upgrade(sv, SVt_RV);
76e3520e 5029 SvTEMP_off(tmpRef);
d689ffdd 5030 SvRV(sv) = tmpRef;
2304df62 5031 SvROK_on(sv);
2304df62
AD		 5032 return sv;
5033}
5034
954c1994 5035/* newRV_inc is #defined to newRV in sv.h */
5f05dabc 5036SV *
864dbfa3 5037Perl_newRV(pTHX_ SV *tmpRef)
5f05dabc 5038{
5f6447b6 5039 return newRV_noinc(SvREFCNT_inc(tmpRef));
5f05dabc 5040}
5f05dabc 5041
954c1994
GS		 5042/*
5043=for apidoc newSVsv
5044
5045Creates a new SV which is an exact duplicate of the original SV.
5046
5047=cut
5048*/
5049
79072805
LW		 5050/* make an exact duplicate of old */
5051
5052SV *
864dbfa3 5053Perl_newSVsv(pTHX_ register SV *old)
79072805 5054{
0453d815 5055 dTHR;
463ee0b2 5056 register SV *sv;
79072805
LW		 5057
5058 if (!old)
5059 return Nullsv;
8990e307 5060 if (SvTYPE(old) == SVTYPEMASK) {
0453d815
PM		 5061 if (ckWARN_d(WARN_INTERNAL))
5062 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
79072805
LW		 5063 return Nullsv;
5064 }
4561caa4 5065 new_SV(sv);
ff68c719 5066 if (SvTEMP(old)) {
5067 SvTEMP_off(old);
463ee0b2 5068 sv_setsv(sv,old);
ff68c719 5069 SvTEMP_on(old);
79072805
LW		 5070 }
5071 else
463ee0b2
LW		 5072 sv_setsv(sv,old);
5073 return sv;
79072805
LW		 5074}
5075
5076void
864dbfa3 5077Perl_sv_reset(pTHX_ register char *s, HV *stash)
79072805
LW		 5078{
5079 register HE *entry;
5080 register GV *gv;
5081 register SV *sv;
5082 register I32 i;
5083 register PMOP *pm;
5084 register I32 max;
4802d5d7 5085 char todo[PERL_UCHAR_MAX+1];
79072805 5086
49d8d3a1
MB		 5087 if (!stash)
5088 return;
5089
79072805
LW		 5090 if (!*s) { /* reset ?? searches */
5091 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
48c036b1 5092 pm->op_pmdynflags &= ~PMdf_USED;
79072805
LW		 5093 }
5094 return;
5095 }
5096
5097 /* reset variables */
5098
5099 if (!HvARRAY(stash))
5100 return;
463ee0b2
LW		 5101
5102 Zero(todo, 256, char);
79072805 5103 while (*s) {
4802d5d7 5104 i = (unsigned char)*s;
79072805
LW		 5105 if (s[1] == '-') {
5106 s += 2;
5107 }
4802d5d7 5108 max = (unsigned char)*s++;
79072805 5109 for ( ; i <= max; i++) {
463ee0b2
LW		 5110 todo[i] = 1;
5111 }
a0d0e21e 5112 for (i = 0; i <= (I32) HvMAX(stash); i++) {
79072805 5113 for (entry = HvARRAY(stash)[i];
9e35f4b3
GS		 5114 entry;
5115 entry = HeNEXT(entry))
5116 {
1edc1566 5117 if (!todo[(U8)*HeKEY(entry)])
463ee0b2 5118 continue;
1edc1566 5119 gv = (GV*)HeVAL(entry);
79072805 5120 sv = GvSV(gv);
9e35f4b3
GS		 5121 if (SvTHINKFIRST(sv)) {
5122 if (!SvREADONLY(sv) && SvROK(sv))
5123 sv_unref(sv);
5124 continue;
5125 }
a0d0e21e 5126 (void)SvOK_off(sv);
79072805
LW		 5127 if (SvTYPE(sv) >= SVt_PV) {
5128 SvCUR_set(sv, 0);
463ee0b2
LW		 5129 if (SvPVX(sv) != Nullch)
5130 *SvPVX(sv) = '\0';
44a8e56a 5131 SvTAINT(sv);
79072805
LW		 5132 }
5133 if (GvAV(gv)) {
5134 av_clear(GvAV(gv));
5135 }
44a8e56a 5136 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
463ee0b2 5137 hv_clear(GvHV(gv));
ed79a026 5138#if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
3280af22 5139 if (gv == PL_envgv)
79072805 5140 environ[0] = Nullch;
a0d0e21e 5141#endif
79072805
LW		 5142 }
5143 }
5144 }
5145 }
5146}
5147
46fc3d4c 5148IO*
864dbfa3 5149Perl_sv_2io(pTHX_ SV *sv)
46fc3d4c 5150{
5151 IO* io;
5152 GV* gv;
2d8e6c8d 5153 STRLEN n_a;
46fc3d4c 5154
5155 switch (SvTYPE(sv)) {
5156 case SVt_PVIO:
5157 io = (IO*)sv;
5158 break;
5159 case SVt_PVGV:
5160 gv = (GV*)sv;
5161 io = GvIO(gv);
5162 if (!io)
cea2e8a9 5163 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
46fc3d4c 5164 break;
5165 default:
5166 if (!SvOK(sv))
cea2e8a9 5167 Perl_croak(aTHX_ PL_no_usym, "filehandle");
46fc3d4c 5168 if (SvROK(sv))
5169 return sv_2io(SvRV(sv));
2d8e6c8d 5170 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
46fc3d4c 5171 if (gv)
5172 io = GvIO(gv);
5173 else
5174 io = 0;
5175 if (!io)
cea2e8a9 5176 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
46fc3d4c 5177 break;
5178 }
5179 return io;
5180}
5181
79072805 5182CV *
864dbfa3 5183Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
79072805
LW		 5184{
5185 GV *gv;
5186 CV *cv;
2d8e6c8d 5187 STRLEN n_a;
79072805
LW		 5188
5189 if (!sv)
93a17b20 5190 return *gvp = Nullgv, Nullcv;
79072805 5191 switch (SvTYPE(sv)) {
79072805
LW		 5192 case SVt_PVCV:
5193 *st = CvSTASH(sv);
5194 *gvp = Nullgv;
5195 return (CV*)sv;
5196 case SVt_PVHV:
5197 case SVt_PVAV:
5198 *gvp = Nullgv;
5199 return Nullcv;
8990e307
LW		 5200 case SVt_PVGV:
5201 gv = (GV*)sv;
a0d0e21e 5202 *gvp = gv;
8990e307
LW		 5203 *st = GvESTASH(gv);
5204 goto fix_gv;
5205
79072805 5206 default:
a0d0e21e
LW		 5207 if (SvGMAGICAL(sv))
5208 mg_get(sv);
5209 if (SvROK(sv)) {
0f4592ef 5210 dTHR;
f5284f61
IZ		 5211 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5212 tryAMAGICunDEREF(to_cv);
5213
62f274bf
GS		 5214 sv = SvRV(sv);
5215 if (SvTYPE(sv) == SVt_PVCV) {
5216 cv = (CV*)sv;
5217 *gvp = Nullgv;
5218 *st = CvSTASH(cv);
5219 return cv;
5220 }
5221 else if(isGV(sv))
5222 gv = (GV*)sv;
5223 else
cea2e8a9 5224 Perl_croak(aTHX_ "Not a subroutine reference");
a0d0e21e 5225 }
62f274bf 5226 else if (isGV(sv))
79072805
LW		 5227 gv = (GV*)sv;
5228 else
2d8e6c8d 5229 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
79072805
LW		 5230 *gvp = gv;
5231 if (!gv)
5232 return Nullcv;
5233 *st = GvESTASH(gv);
8990e307 5234 fix_gv:
8ebc5c01 5235 if (lref && !GvCVu(gv)) {
4633a7c4 5236 SV *tmpsv;
748a9306 5237 ENTER;
4633a7c4 5238 tmpsv = NEWSV(704,0);
16660edb 5239 gv_efullname3(tmpsv, gv, Nullch);
f6ec51f7
GS		 5240 /* XXX this is probably not what they think they're getting.
5241 * It has the same effect as "sub name;", i.e. just a forward
5242 * declaration! */
774d564b 5243 newSUB(start_subparse(FALSE, 0),
4633a7c4
LW		 5244 newSVOP(OP_CONST, 0, tmpsv),
5245 Nullop,
8990e307 5246 Nullop);
748a9306 5247 LEAVE;
8ebc5c01 5248 if (!GvCVu(gv))
cea2e8a9 5249 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
8990e307 5250 }
8ebc5c01 5251 return GvCVu(gv);
79072805
LW		 5252 }
5253}
5254
c461cf8f
JH		 5255/*
5256=for apidoc sv_true
5257
5258Returns true if the SV has a true value by Perl's rules.
5259
5260=cut
5261*/
5262
79072805 5263I32
864dbfa3 5264Perl_sv_true(pTHX_ register SV *sv)
79072805 5265{
4e35701f 5266 dTHR;
8990e307
LW		 5267 if (!sv)
5268 return 0;
79072805 5269 if (SvPOK(sv)) {
4e35701f
NIS		 5270 register XPV* tXpv;
5271 if ((tXpv = (XPV*)SvANY(sv)) &&
c2f1de04 5272 (tXpv->xpv_cur > 1 ||
4e35701f 5273 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
79072805
LW		 5274 return 1;
5275 else
5276 return 0;
5277 }
5278 else {
5279 if (SvIOK(sv))
463ee0b2 5280 return SvIVX(sv) != 0;
79072805
LW		 5281 else {
5282 if (SvNOK(sv))
463ee0b2 5283 return SvNVX(sv) != 0.0;
79072805 5284 else
463ee0b2 5285 return sv_2bool(sv);
79072805
LW		 5286 }
5287 }
5288}
79072805 5289
ff68c719 5290IV
864dbfa3 5291Perl_sv_iv(pTHX_ register SV *sv)
85e6fe83 5292{
25da4f38
IZ		 5293 if (SvIOK(sv)) {
5294 if (SvIsUV(sv))
5295 return (IV)SvUVX(sv);
ff68c719 5296 return SvIVX(sv);
25da4f38 5297 }
ff68c719 5298 return sv_2iv(sv);
85e6fe83 5299}
85e6fe83 5300
ff68c719 5301UV
864dbfa3 5302Perl_sv_uv(pTHX_ register SV *sv)
ff68c719 5303{
25da4f38
IZ		 5304 if (SvIOK(sv)) {
5305 if (SvIsUV(sv))
5306 return SvUVX(sv);
5307 return (UV)SvIVX(sv);
5308 }
ff68c719 5309 return sv_2uv(sv);
5310}
85e6fe83 5311
65202027 5312NV
864dbfa3 5313Perl_sv_nv(pTHX_ register SV *sv)
79072805 5314{
ff68c719 5315 if (SvNOK(sv))
5316 return SvNVX(sv);
5317 return sv_2nv(sv);
79072805 5318}
79072805 5319
79072805 5320char *
864dbfa3 5321Perl_sv_pv(pTHX_ SV *sv)
1fa8b10d
JD		 5322{
5323 STRLEN n_a;
5324
5325 if (SvPOK(sv))
5326 return SvPVX(sv);
5327
5328 return sv_2pv(sv, &n_a);
5329}
5330
5331char *
864dbfa3 5332Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
79072805 5333{
85e6fe83
LW		 5334 if (SvPOK(sv)) {
5335 *lp = SvCUR(sv);
a0d0e21e 5336 return SvPVX(sv);
85e6fe83 5337 }
463ee0b2 5338 return sv_2pv(sv, lp);
79072805 5339}
79072805 5340
c461cf8f
JH		 5341/*
5342=for apidoc sv_pvn_force
5343
5344Get a sensible string out of the SV somehow.
5345
5346=cut
5347*/
5348
a0d0e21e 5349char *
864dbfa3 5350Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
a0d0e21e
LW		 5351{
5352 char *s;
5353
6fc92669
GS		 5354 if (SvTHINKFIRST(sv) && !SvROK(sv))
5355 sv_force_normal(sv);
1c846c1f 5356
a0d0e21e
LW		 5357 if (SvPOK(sv)) {
5358 *lp = SvCUR(sv);
5359 }
5360 else {
748a9306 5361 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
6fc92669 5362 dTHR;
cea2e8a9 5363 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
6fc92669 5364 PL_op_name[PL_op->op_type]);
a0d0e21e 5365 }
4633a7c4
LW		 5366 else
5367 s = sv_2pv(sv, lp);
a0d0e21e
LW		 5368 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5369 STRLEN len = *lp;
1c846c1f 5370
a0d0e21e
LW		 5371 if (SvROK(sv))
5372 sv_unref(sv);
5373 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5374 SvGROW(sv, len + 1);
5375 Move(s,SvPVX(sv),len,char);
5376 SvCUR_set(sv, len);
5377 *SvEND(sv) = '\0';
5378 }
5379 if (!SvPOK(sv)) {
5380 SvPOK_on(sv); /* validate pointer */
5381 SvTAINT(sv);
1d7c1841
GS		 5382 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5383 PTR2UV(sv),SvPVX(sv)));
a0d0e21e
LW		 5384 }
5385 }
5386 return SvPVX(sv);
5387}
5388
5389char *
7340a771
GS		 5390Perl_sv_pvbyte(pTHX_ SV *sv)
5391{
5392 return sv_pv(sv);
5393}
5394
5395char *
5396Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5397{
5398 return sv_pvn(sv,lp);
5399}
5400
5401char *
5402Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5403{
5404 return sv_pvn_force(sv,lp);
5405}
5406
5407char *
5408Perl_sv_pvutf8(pTHX_ SV *sv)
5409{
560a288e 5410 sv_utf8_upgrade(sv);
7340a771
GS		 5411 return sv_pv(sv);
5412}
5413
5414char *
5415Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5416{
560a288e 5417 sv_utf8_upgrade(sv);
7340a771
GS		 5418 return sv_pvn(sv,lp);
5419}
5420
c461cf8f
JH		 5421/*
5422=for apidoc sv_pvutf8n_force
5423
5424Get a sensible UTF8-encoded string out of the SV somehow. See
5425L</sv_pvn_force>.
5426
5427=cut
5428*/
5429
7340a771
GS		 5430char *
5431Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5432{
560a288e 5433 sv_utf8_upgrade(sv);
7340a771
GS		 5434 return sv_pvn_force(sv,lp);
5435}
5436
c461cf8f
JH		 5437/*
5438=for apidoc sv_reftype
5439
5440Returns a string describing what the SV is a reference to.
5441
5442=cut
5443*/
5444
7340a771 5445char *
864dbfa3 5446Perl_sv_reftype(pTHX_ SV *sv, int ob)
a0d0e21e
LW		 5447{
5448 if (ob && SvOBJECT(sv))
5449 return HvNAME(SvSTASH(sv));
5450 else {
5451 switch (SvTYPE(sv)) {
5452 case SVt_NULL:
5453 case SVt_IV:
5454 case SVt_NV:
5455 case SVt_RV:
5456 case SVt_PV:
5457 case SVt_PVIV:
5458 case SVt_PVNV:
5459 case SVt_PVMG:
5460 case SVt_PVBM:
5461 if (SvROK(sv))
5462 return "REF";
5463 else
5464 return "SCALAR";
5465 case SVt_PVLV: return "LVALUE";
5466 case SVt_PVAV: return "ARRAY";
5467 case SVt_PVHV: return "HASH";
5468 case SVt_PVCV: return "CODE";
5469 case SVt_PVGV: return "GLOB";
1d2dff63 5470 case SVt_PVFM: return "FORMAT";
27f9d8f3 5471 case SVt_PVIO: return "IO";
a0d0e21e
LW		 5472 default: return "UNKNOWN";
5473 }
5474 }
5475}
5476
954c1994
GS		 5477/*
5478=for apidoc sv_isobject
5479
5480Returns a boolean indicating whether the SV is an RV pointing to a blessed
5481object. If the SV is not an RV, or if the object is not blessed, then this
5482will return false.
5483
5484=cut
5485*/
5486
463ee0b2 5487int
864dbfa3 5488Perl_sv_isobject(pTHX_ SV *sv)
85e6fe83 5489{
68dc0745 5490 if (!sv)
5491 return 0;
5492 if (SvGMAGICAL(sv))
5493 mg_get(sv);
85e6fe83
LW		 5494 if (!SvROK(sv))
5495 return 0;
5496 sv = (SV*)SvRV(sv);
5497 if (!SvOBJECT(sv))
5498 return 0;
5499 return 1;
5500}
5501
954c1994
GS		 5502/*
5503=for apidoc sv_isa
5504
5505Returns a boolean indicating whether the SV is blessed into the specified
5506class. This does not check for subtypes; use C<sv_derived_from> to verify
5507an inheritance relationship.
5508
5509=cut
5510*/
5511
85e6fe83 5512int
864dbfa3 5513Perl_sv_isa(pTHX_ SV *sv, const char *name)
463ee0b2 5514{
68dc0745 5515 if (!sv)
5516 return 0;
5517 if (SvGMAGICAL(sv))
5518 mg_get(sv);
ed6116ce 5519 if (!SvROK(sv))
463ee0b2 5520 return 0;
ed6116ce
LW		 5521 sv = (SV*)SvRV(sv);
5522 if (!SvOBJECT(sv))
463ee0b2
LW		 5523 return 0;
5524
5525 return strEQ(HvNAME(SvSTASH(sv)), name);
5526}
5527
954c1994
GS		 5528/*
5529=for apidoc newSVrv
5530
5531Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5532it will be upgraded to one. If C<classname> is non-null then the new SV will
5533be blessed in the specified package. The new SV is returned and its
5534reference count is 1.
5535
5536=cut
5537*/
5538
463ee0b2 5539SV*
864dbfa3 5540Perl_newSVrv(pTHX_ SV *rv, const char *classname)
463ee0b2 5541{
11343788 5542 dTHR;
463ee0b2
LW		 5543 SV *sv;
5544
4561caa4 5545 new_SV(sv);
51cf62d8 5546
2213622d 5547 SV_CHECK_THINKFIRST(rv);
51cf62d8 5548 SvAMAGIC_off(rv);
51cf62d8 5549
0199fce9
JD		 5550 if (SvTYPE(rv) >= SVt_PVMG) {
5551 U32 refcnt = SvREFCNT(rv);
5552 SvREFCNT(rv) = 0;
5553 sv_clear(rv);
5554 SvFLAGS(rv) = 0;
5555 SvREFCNT(rv) = refcnt;
5556 }
5557
51cf62d8 5558 if (SvTYPE(rv) < SVt_RV)
0199fce9
JD		 5559 sv_upgrade(rv, SVt_RV);
5560 else if (SvTYPE(rv) > SVt_RV) {
5561 (void)SvOOK_off(rv);
5562 if (SvPVX(rv) && SvLEN(rv))
5563 Safefree(SvPVX(rv));
5564 SvCUR_set(rv, 0);
5565 SvLEN_set(rv, 0);
5566 }
51cf62d8
OT		 5567
5568 (void)SvOK_off(rv);
053fc874 5569 SvRV(rv) = sv;
ed6116ce 5570 SvROK_on(rv);
463ee0b2 5571
a0d0e21e
LW		 5572 if (classname) {
5573 HV* stash = gv_stashpv(classname, TRUE);
5574 (void)sv_bless(rv, stash);
5575 }
5576 return sv;
5577}
5578
954c1994
GS		 5579/*
5580=for apidoc sv_setref_pv
5581
5582Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5583argument will be upgraded to an RV. That RV will be modified to point to
5584the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5585into the SV. The C<classname> argument indicates the package for the
5586blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5587will be returned and will have a reference count of 1.
5588
5589Do not use with other Perl types such as HV, AV, SV, CV, because those
5590objects will become corrupted by the pointer copy process.
5591
5592Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5593
5594=cut
5595*/
5596
a0d0e21e 5597SV*
864dbfa3 5598Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
a0d0e21e 5599{
189b2af5 5600 if (!pv) {
3280af22 5601 sv_setsv(rv, &PL_sv_undef);
189b2af5
GS		 5602 SvSETMAGIC(rv);
5603 }
a0d0e21e 5604 else
56431972 5605 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
a0d0e21e
LW		 5606 return rv;
5607}
5608
954c1994
GS		 5609/*
5610=for apidoc sv_setref_iv
5611
5612Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5613argument will be upgraded to an RV. That RV will be modified to point to
5614the new SV. The C<classname> argument indicates the package for the
5615blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5616will be returned and will have a reference count of 1.
5617
5618=cut
5619*/
5620
a0d0e21e 5621SV*
864dbfa3 5622Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
a0d0e21e
LW		 5623{
5624 sv_setiv(newSVrv(rv,classname), iv);
5625 return rv;
5626}
5627
954c1994
GS		 5628/*
5629=for apidoc sv_setref_nv
5630
5631Copies a double into a new SV, optionally blessing the SV. The C<rv>
5632argument will be upgraded to an RV. That RV will be modified to point to
5633the new SV. The C<classname> argument indicates the package for the
5634blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5635will be returned and will have a reference count of 1.
5636
5637=cut
5638*/
5639
a0d0e21e 5640SV*
65202027 5641Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
a0d0e21e
LW		 5642{
5643 sv_setnv(newSVrv(rv,classname), nv);
5644 return rv;
5645}
463ee0b2 5646
954c1994
GS		 5647/*
5648=for apidoc sv_setref_pvn
5649
5650Copies a string into a new SV, optionally blessing the SV. The length of the
5651string must be specified with C<n>. The C<rv> argument will be upgraded to
5652an RV. That RV will be modified to point to the new SV. The C<classname>
5653argument indicates the package for the blessing. Set C<classname> to
5654C<Nullch> to avoid the blessing. The new SV will be returned and will have
5655a reference count of 1.
5656
5657Note that C<sv_setref_pv> copies the pointer while this copies the string.
5658
5659=cut
5660*/
5661
a0d0e21e 5662SV*
864dbfa3 5663Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
a0d0e21e
LW		 5664{
5665 sv_setpvn(newSVrv(rv,classname), pv, n);
463ee0b2
LW		 5666 return rv;
5667}
5668
954c1994
GS		 5669/*
5670=for apidoc sv_bless
5671
5672Blesses an SV into a specified package. The SV must be an RV. The package
5673must be designated by its stash (see C<gv_stashpv()>). The reference count
5674of the SV is unaffected.
5675
5676=cut
5677*/
5678
a0d0e21e 5679SV*
864dbfa3 5680Perl_sv_bless(pTHX_ SV *sv, HV *stash)
a0d0e21e 5681{
11343788 5682 dTHR;
76e3520e 5683 SV *tmpRef;
a0d0e21e 5684 if (!SvROK(sv))
cea2e8a9 5685 Perl_croak(aTHX_ "Can't bless non-reference value");
76e3520e
GS		 5686 tmpRef = SvRV(sv);
5687 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5688 if (SvREADONLY(tmpRef))
cea2e8a9 5689 Perl_croak(aTHX_ PL_no_modify);
76e3520e
GS		 5690 if (SvOBJECT(tmpRef)) {
5691 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5692 --PL_sv_objcount;
76e3520e 5693 SvREFCNT_dec(SvSTASH(tmpRef));
2e3febc6 5694 }
a0d0e21e 5695 }
76e3520e
GS		 5696 SvOBJECT_on(tmpRef);
5697 if (SvTYPE(tmpRef) != SVt_PVIO)
3280af22 5698 ++PL_sv_objcount;
76e3520e
GS		 5699 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5700 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
a0d0e21e 5701
2e3febc6
CS		 5702 if (Gv_AMG(stash))
5703 SvAMAGIC_on(sv);
5704 else
5705 SvAMAGIC_off(sv);
a0d0e21e
LW		 5706
5707 return sv;
5708}
5709
76e3520e 5710STATIC void
cea2e8a9 5711S_sv_unglob(pTHX_ SV *sv)
a0d0e21e 5712{
850fabdf
GS		 5713 void *xpvmg;
5714
a0d0e21e
LW		 5715 assert(SvTYPE(sv) == SVt_PVGV);
5716 SvFAKE_off(sv);
5717 if (GvGP(sv))
1edc1566 5718 gp_free((GV*)sv);
e826b3c7
GS		 5719 if (GvSTASH(sv)) {
5720 SvREFCNT_dec(GvSTASH(sv));
5721 GvSTASH(sv) = Nullhv;
5722 }
a0d0e21e
LW		 5723 sv_unmagic(sv, '*');
5724 Safefree(GvNAME(sv));
a5f75d66 5725 GvMULTI_off(sv);
850fabdf
GS		 5726
5727 /* need to keep SvANY(sv) in the right arena */
5728 xpvmg = new_XPVMG();
5729 StructCopy(SvANY(sv), xpvmg, XPVMG);
5730 del_XPVGV(SvANY(sv));
5731 SvANY(sv) = xpvmg;
5732
a0d0e21e
LW		 5733 SvFLAGS(sv) &= ~SVTYPEMASK;
5734 SvFLAGS(sv) |= SVt_PVMG;
5735}
5736
954c1994
GS		 5737/*
5738=for apidoc sv_unref
5739
5740Unsets the RV status of the SV, and decrements the reference count of
5741whatever was being referenced by the RV. This can almost be thought of
5742as a reversal of C<newSVrv>. See C<SvROK_off>.
5743
5744=cut
5745*/
5746
ed6116ce 5747void
864dbfa3 5748Perl_sv_unref(pTHX_ SV *sv)
ed6116ce 5749{
a0d0e21e 5750 SV* rv = SvRV(sv);
810b8aa5
GS		 5751
5752 if (SvWEAKREF(sv)) {
5753 sv_del_backref(sv);
5754 SvWEAKREF_off(sv);
5755 SvRV(sv) = 0;
5756 return;
5757 }
ed6116ce
LW		 5758 SvRV(sv) = 0;
5759 SvROK_off(sv);
4633a7c4
LW		 5760 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5761 SvREFCNT_dec(rv);
8e07c86e 5762 else
4633a7c4 5763 sv_2mortal(rv); /* Schedule for freeing later */
ed6116ce 5764}
8990e307 5765
bbce6d69 5766void
864dbfa3 5767Perl_sv_taint(pTHX_ SV *sv)
bbce6d69 5768{
5769 sv_magic((sv), Nullsv, 't', Nullch, 0);
5770}
5771
5772void
864dbfa3 5773Perl_sv_untaint(pTHX_ SV *sv)
bbce6d69 5774{
13f57bf8 5775 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5776 MAGIC *mg = mg_find(sv, 't');
5777 if (mg)
565764a8 5778 mg->mg_len &= ~1;
36477c24 5779 }
bbce6d69 5780}
5781
5782bool
864dbfa3 5783Perl_sv_tainted(pTHX_ SV *sv)
bbce6d69 5784{
13f57bf8 5785 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
36477c24 5786 MAGIC *mg = mg_find(sv, 't');
155aba94 5787 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
36477c24 5788 return TRUE;
5789 }
5790 return FALSE;
bbce6d69 5791}
5792
954c1994
GS		 5793/*
5794=for apidoc sv_setpviv
5795
5796Copies an integer into the given SV, also updating its string value.
5797Does not handle 'set' magic. See C<sv_setpviv_mg>.
5798
5799=cut
5800*/
5801
84902520 5802void
864dbfa3 5803Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
84902520 5804{
25da4f38
IZ		 5805 char buf[TYPE_CHARS(UV)];
5806 char *ebuf;
5807 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
84902520 5808
25da4f38 5809 sv_setpvn(sv, ptr, ebuf - ptr);
84902520
TB		 5810}
5811
ef50df4b 5812
954c1994
GS		 5813/*
5814=for apidoc sv_setpviv_mg
5815
5816Like C<sv_setpviv>, but also handles 'set' magic.
5817
5818=cut
5819*/
5820
ef50df4b 5821void
864dbfa3 5822Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
ef50df4b 5823{
25da4f38
IZ		 5824 char buf[TYPE_CHARS(UV)];
5825 char *ebuf;
5826 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5827
5828 sv_setpvn(sv, ptr, ebuf - ptr);
ef50df4b
GS		 5829 SvSETMAGIC(sv);
5830}
5831
cea2e8a9
GS		 5832#if defined(PERL_IMPLICIT_CONTEXT)
5833void
5834Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5835{
5836 dTHX;
5837 va_list args;
5838 va_start(args, pat);
c5be433b 5839 sv_vsetpvf(sv, pat, &args);
cea2e8a9
GS		 5840 va_end(args);
5841}
5842
5843
5844void
5845Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5846{
5847 dTHX;
5848 va_list args;
5849 va_start(args, pat);
c5be433b 5850 sv_vsetpvf_mg(sv, pat, &args);
cea2e8a9 5851 va_end(args);
cea2e8a9
GS		 5852}
5853#endif
5854
954c1994
GS		 5855/*
5856=for apidoc sv_setpvf
5857
5858Processes its arguments like C<sprintf> and sets an SV to the formatted
5859output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5860
5861=cut
5862*/
5863
46fc3d4c 5864void
864dbfa3 5865Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5866{
5867 va_list args;
46fc3d4c 5868 va_start(args, pat);
c5be433b 5869 sv_vsetpvf(sv, pat, &args);
46fc3d4c 5870 va_end(args);
5871}
5872
c5be433b
GS		 5873void
5874Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5875{
5876 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5877}
ef50df4b 5878
954c1994
GS		 5879/*
5880=for apidoc sv_setpvf_mg
5881
5882Like C<sv_setpvf>, but also handles 'set' magic.
5883
5884=cut
5885*/
5886
ef50df4b 5887void
864dbfa3 5888Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5889{
5890 va_list args;
ef50df4b 5891 va_start(args, pat);
c5be433b 5892 sv_vsetpvf_mg(sv, pat, &args);
ef50df4b 5893 va_end(args);
c5be433b
GS		 5894}
5895
5896void
5897Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5898{
5899 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5900 SvSETMAGIC(sv);
5901}
5902
cea2e8a9
GS		 5903#if defined(PERL_IMPLICIT_CONTEXT)
5904void
5905Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5906{
5907 dTHX;
5908 va_list args;
5909 va_start(args, pat);
c5be433b 5910 sv_vcatpvf(sv, pat, &args);
cea2e8a9
GS		 5911 va_end(args);
5912}
5913
5914void
5915Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5916{
5917 dTHX;
5918 va_list args;
5919 va_start(args, pat);
c5be433b 5920 sv_vcatpvf_mg(sv, pat, &args);
cea2e8a9 5921 va_end(args);
cea2e8a9
GS		 5922}
5923#endif
5924
954c1994
GS		 5925/*
5926=for apidoc sv_catpvf
5927
5928Processes its arguments like C<sprintf> and appends the formatted output
5929to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5930typically be called after calling this function to handle 'set' magic.
5931
5932=cut
5933*/
5934
46fc3d4c 5935void
864dbfa3 5936Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
46fc3d4c 5937{
5938 va_list args;
46fc3d4c 5939 va_start(args, pat);
c5be433b 5940 sv_vcatpvf(sv, pat, &args);
46fc3d4c 5941 va_end(args);
5942}
5943
ef50df4b 5944void
c5be433b
GS		 5945Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5946{
5947 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5948}
5949
954c1994
GS		 5950/*
5951=for apidoc sv_catpvf_mg
5952
5953Like C<sv_catpvf>, but also handles 'set' magic.
5954
5955=cut
5956*/
5957
c5be433b 5958void
864dbfa3 5959Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
ef50df4b
GS		 5960{
5961 va_list args;
ef50df4b 5962 va_start(args, pat);
c5be433b 5963 sv_vcatpvf_mg(sv, pat, &args);
ef50df4b 5964 va_end(args);
c5be433b
GS		 5965}
5966
5967void
5968Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5969{
5970 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
ef50df4b
GS		 5971 SvSETMAGIC(sv);
5972}
5973
954c1994
GS		 5974/*
5975=for apidoc sv_vsetpvfn
5976
5977Works like C<vcatpvfn> but copies the text into the SV instead of
5978appending it.
5979
5980=cut
5981*/
5982
46fc3d4c 5983void
7d5ea4e7 5984Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 5985{
5986 sv_setpvn(sv, "", 0);
7d5ea4e7 5987 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
46fc3d4c 5988}
5989
954c1994
GS		 5990/*
5991=for apidoc sv_vcatpvfn
5992
5993Processes its arguments like C<vsprintf> and appends the formatted output
5994to an SV. Uses an array of SVs if the C style variable argument list is
5995missing (NULL). When running with taint checks enabled, indicates via
5996C<maybe_tainted> if results are untrustworthy (often due to the use of
5997locales).
5998
5999=cut
6000*/
6001
46fc3d4c 6002void
7d5ea4e7 6003Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
46fc3d4c 6004{
e858de61 6005 dTHR;
46fc3d4c 6006 char *p;
6007 char *q;
6008 char *patend;
fc36a67e 6009 STRLEN origlen;
46fc3d4c 6010 I32 svix = 0;
c635e13b 6011 static char nullstr[] = "(null)";
7e2040f0 6012 SV *argsv;
46fc3d4c 6013
6014 /* no matter what, this is a string now */
fc36a67e 6015 (void)SvPV_force(sv, origlen);
46fc3d4c 6016
fc36a67e 6017 /* special-case "", "%s", and "%_" */
46fc3d4c 6018 if (patlen == 0)
6019 return;
fc36a67e 6020 if (patlen == 2 && pat[0] == '%') {
6021 switch (pat[1]) {
6022 case 's':
c635e13b 6023 if (args) {
6024 char *s = va_arg(*args, char*);
6025 sv_catpv(sv, s ? s : nullstr);
6026 }
7e2040f0 6027 else if (svix < svmax) {
fc36a67e 6028 sv_catsv(sv, *svargs);
7e2040f0
GS		 6029 if (DO_UTF8(*svargs))
6030 SvUTF8_on(sv);
6031 }
fc36a67e 6032 return;
6033 case '_':
6034 if (args) {
7e2040f0
GS		 6035 argsv = va_arg(*args, SV*);
6036 sv_catsv(sv, argsv);
6037 if (DO_UTF8(argsv))
6038 SvUTF8_on(sv);
fc36a67e 6039 return;
6040 }
6041 /* See comment on '_' below */
6042 break;
6043 }
46fc3d4c 6044 }
6045
6046 patend = (char*)pat + patlen;
6047 for (p = (char*)pat; p < patend; p = q) {
6048 bool alt = FALSE;
6049 bool left = FALSE;
b22c7a20
GS		 6050 bool vectorize = FALSE;
6051 bool utf = FALSE;
46fc3d4c 6052 char fill = ' ';
6053 char plus = 0;
6054 char intsize = 0;
6055 STRLEN width = 0;
fc36a67e 6056 STRLEN zeros = 0;
46fc3d4c 6057 bool has_precis = FALSE;
6058 STRLEN precis = 0;
7e2040f0 6059 bool is_utf = FALSE;
eb3fce90 6060
46fc3d4c 6061 char esignbuf[4];
806e7201 6062 U8 utf8buf[UTF8_MAXLEN];
46fc3d4c 6063 STRLEN esignlen = 0;
6064
6065 char *eptr = Nullch;
fc36a67e 6066 STRLEN elen = 0;
089c015b
JH		 6067 /* Times 4: a decimal digit takes more than 3 binary digits.
6068 * NV_DIG: mantissa takes than many decimal digits.
6069 * Plus 32: Playing safe. */
6070 char ebuf[IV_DIG * 4 + NV_DIG + 32];
2d4389e4
JH		 6071 /* large enough for "%#.#f" --chip */
6072 /* what about long double NVs? --jhi */
b22c7a20
GS		 6073
6074 SV *vecsv;
a05b299f 6075 U8 *vecstr = Null(U8*);
b22c7a20 6076 STRLEN veclen = 0;
46fc3d4c 6077 char c;
6078 int i;
6079 unsigned base;
6080 IV iv;
6081 UV uv;
65202027 6082 NV nv;
46fc3d4c 6083 STRLEN have;
6084 STRLEN need;
6085 STRLEN gap;
b22c7a20
GS		 6086 char *dotstr = ".";
6087 STRLEN dotstrlen = 1;
eb3fce90
JH		 6088 I32 epix = 0; /* explicit parameter index */
6089 I32 ewix = 0; /* explicit width index */
6090 bool asterisk = FALSE;
46fc3d4c 6091
6092 for (q = p; q < patend && *q != '%'; ++q) ;
6093 if (q > p) {
6094 sv_catpvn(sv, p, q - p);
6095 p = q;
6096 }
6097 if (q++ >= patend)
6098 break;
6099
fc36a67e 6100 /* FLAGS */
6101
46fc3d4c 6102 while (*q) {
6103 switch (*q) {
6104 case ' ':
6105 case '+':
6106 plus = *q++;
6107 continue;
6108
6109 case '-':
6110 left = TRUE;
6111 q++;
6112 continue;
6113
6114 case '0':
6115 fill = *q++;
6116 continue;
6117
6118 case '#':
6119 alt = TRUE;
6120 q++;
6121 continue;
6122
b22c7a20
GS		 6123 case '*': /* printf("%*vX",":",$ipv6addr) */
6124 if (q[1] != 'v')
6125 break;
6126 q++;
6127 if (args)
6128 vecsv = va_arg(*args, SV*);
6129 else if (svix < svmax)
6130 vecsv = svargs[svix++];
9c3dd3fe
GS		 6131 else
6132 continue;
b22c7a20
GS		 6133 dotstr = SvPVx(vecsv,dotstrlen);
6134 if (DO_UTF8(vecsv))
6135 is_utf = TRUE;
6136 /* FALL THROUGH */
6137
6138 case 'v':
6139 vectorize = TRUE;
6140 q++;
b22c7a20
GS		 6141 continue;
6142
fc36a67e 6143 default:
6144 break;
6145 }
6146 break;
6147 }
46fc3d4c 6148
fc36a67e 6149 /* WIDTH */
6150
eb3fce90
JH		 6151 scanwidth:
6152
6153 if (*q == '*') {
6154 if (asterisk)
6155 goto unknown;
6156 asterisk = TRUE;
6157 q++;
6158 }
6159
fc36a67e 6160 switch (*q) {
6161 case '1': case '2': case '3':
6162 case '4': case '5': case '6':
6163 case '7': case '8': case '9':
6164 width = 0;
6165 while (isDIGIT(*q))
6166 width = width * 10 + (*q++ - '0');
eb3fce90
JH		 6167 if (*q == '$') {
6168 if (asterisk && ewix == 0) {
6169 ewix = width;
6170 width = 0;
6171 q++;
6172 goto scanwidth;
6173 } else if (epix == 0) {
6174 epix = width;
6175 width = 0;
6176 q++;
6177 goto scanwidth;
6178 } else
6179 goto unknown;
6180 }
6181 }
fc36a67e 6182
eb3fce90 6183 if (asterisk) {
fc36a67e 6184 if (args)
6185 i = va_arg(*args, int);
6186 else
eb3fce90
JH		 6187 i = (ewix ? ewix <= svmax : svix < svmax) ?
6188 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6189 left |= (i < 0);
6190 width = (i < 0) ? -i : i;
fc36a67e 6191 }
6192
6193 /* PRECISION */
46fc3d4c 6194
fc36a67e 6195 if (*q == '.') {
6196 q++;
6197 if (*q == '*') {
46fc3d4c 6198 if (args)
6199 i = va_arg(*args, int);
6200 else
eb3fce90
JH		 6201 i = (ewix ? ewix <= svmax : svix < svmax)
6202 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
fc36a67e 6203 precis = (i < 0) ? 0 : i;
46fc3d4c 6204 q++;
fc36a67e 6205 }
6206 else {
6207 precis = 0;
6208 while (isDIGIT(*q))
6209 precis = precis * 10 + (*q++ - '0');
6210 }
6211 has_precis = TRUE;
6212 }
46fc3d4c 6213
bb2899ba
GS		 6214 if (vectorize) {
6215 if (args) {
6216 vecsv = va_arg(*args, SV*);
6217 vecstr = (U8*)SvPVx(vecsv,veclen);
6218 utf = DO_UTF8(vecsv);
6219 }
eb3fce90
JH		 6220 else if (epix ? epix <= svmax : svix < svmax) {
6221 vecsv = svargs[epix ? epix-1 : svix++];
bb2899ba
GS		 6222 vecstr = (U8*)SvPVx(vecsv,veclen);
6223 utf = DO_UTF8(vecsv);
6224 }
6225 else {
6226 vecstr = (U8*)"";
6227 veclen = 0;
6228 }
6229 }
6230
fc36a67e 6231 /* SIZE */
46fc3d4c 6232
fc36a67e 6233 switch (*q) {
e5c81feb 6234#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6f9bb7fd 6235 case 'L': /* Ld */
e5c81feb
JH		 6236 /* FALL THROUGH */
6237#endif
6238#ifdef HAS_QUAD
6f9bb7fd
GS		 6239 case 'q': /* qd */
6240 intsize = 'q';
6241 q++;
6242 break;
6243#endif
fc36a67e 6244 case 'l':
e5c81feb
JH		 6245#if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6246 if (*(q + 1) == 'l') { /* lld, llf */
fc36a67e 6247 intsize = 'q';
6248 q += 2;
46fc3d4c 6249 break;
cf2093f6 6250 }
fc36a67e 6251#endif
6f9bb7fd 6252 /* FALL THROUGH */
fc36a67e 6253 case 'h':
cf2093f6 6254 /* FALL THROUGH */
fc36a67e 6255 case 'V':
6256 intsize = *q++;
46fc3d4c 6257 break;
6258 }
6259
fc36a67e 6260 /* CONVERSION */
6261
46fc3d4c 6262 switch (c = *q++) {
6263
6264 /* STRINGS */
6265
6266 case '%':
6267 eptr = q - 1;
6268 elen = 1;
6269 goto string;
6270
6271 case 'c':
7e2040f0
GS		 6272 if (args)
6273 uv = va_arg(*args, int);
6274 else
eb3fce90
JH		 6275 uv = (epix ? epix <= svmax : svix < svmax) ?
6276 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
3969a896 6277 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
dfe13c55
GS		 6278 eptr = (char*)utf8buf;
6279 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
7e2040f0
GS		 6280 is_utf = TRUE;
6281 }
6282 else {
6283 c = (char)uv;
6284 eptr = &c;
6285 elen = 1;
a0ed51b3 6286 }
46fc3d4c 6287 goto string;
6288
46fc3d4c 6289 case 's':
6290 if (args) {
fc36a67e 6291 eptr = va_arg(*args, char*);
c635e13b 6292 if (eptr)
1d7c1841
GS		 6293#ifdef MACOS_TRADITIONAL
6294 /* On MacOS, %#s format is used for Pascal strings */
6295 if (alt)
6296 elen = *eptr++;
6297 else
6298#endif
c635e13b 6299 elen = strlen(eptr);
6300 else {
6301 eptr = nullstr;
6302 elen = sizeof nullstr - 1;
6303 }
46fc3d4c 6304 }
eb3fce90
JH		 6305 else if (epix ? epix <= svmax : svix < svmax) {
6306 argsv = svargs[epix ? epix-1 : svix++];
7e2040f0
GS		 6307 eptr = SvPVx(argsv, elen);
6308 if (DO_UTF8(argsv)) {
a0ed51b3
LW		 6309 if (has_precis && precis < elen) {
6310 I32 p = precis;
7e2040f0 6311 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
a0ed51b3
LW		 6312 precis = p;
6313 }
6314 if (width) { /* fudge width (can't fudge elen) */
7e2040f0 6315 width += elen - sv_len_utf8(argsv);
a0ed51b3 6316 }
7e2040f0 6317 is_utf = TRUE;
a0ed51b3
LW		 6318 }
6319 }
46fc3d4c 6320 goto string;
6321
fc36a67e 6322 case '_':
6323 /*
6324 * The "%_" hack might have to be changed someday,
6325 * if ISO or ANSI decide to use '_' for something.
6326 * So we keep it hidden from users' code.
6327 */
6328 if (!args)
6329 goto unknown;
7e2040f0
GS		 6330 argsv = va_arg(*args,SV*);
6331 eptr = SvPVx(argsv, elen);
6332 if (DO_UTF8(argsv))
6333 is_utf = TRUE;
fc36a67e 6334
46fc3d4c 6335 string:
b22c7a20 6336 vectorize = FALSE;
46fc3d4c 6337 if (has_precis && elen > precis)
6338 elen = precis;
6339 break;
6340
6341 /* INTEGERS */
6342
fc36a67e 6343 case 'p':
c2e66d9e
GS		 6344 if (alt)
6345 goto unknown;
fc36a67e 6346 if (args)
56431972 6347 uv = PTR2UV(va_arg(*args, void*));
fc36a67e 6348 else
eb3fce90
JH		 6349 uv = (epix ? epix <= svmax : svix < svmax) ?
6350 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
fc36a67e 6351 base = 16;
6352 goto integer;
6353
46fc3d4c 6354 case 'D':
29fe7a80 6355#ifdef IV_IS_QUAD
22f3ae8c 6356 intsize = 'q';
29fe7a80 6357#else
46fc3d4c 6358 intsize = 'l';
29fe7a80 6359#endif
46fc3d4c 6360 /* FALL THROUGH */
6361 case 'd':
6362 case 'i':
b22c7a20 6363 if (vectorize) {
ba210ebe 6364 STRLEN ulen;
b22c7a20
GS		 6365 if (!veclen) {
6366 vectorize = FALSE;
6367 break;
6368 }
6369 if (utf)
dcad2880 6370 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 6371 else {
a05b299f 6372 iv = *vecstr;
b22c7a20
GS		 6373 ulen = 1;
6374 }
6375 vecstr += ulen;
6376 veclen -= ulen;
6377 }
6378 else if (args) {
46fc3d4c 6379 switch (intsize) {
6380 case 'h': iv = (short)va_arg(*args, int); break;
6381 default: iv = va_arg(*args, int); break;
6382 case 'l': iv = va_arg(*args, long); break;
fc36a67e 6383 case 'V': iv = va_arg(*args, IV); break;
cf2093f6
JH		 6384#ifdef HAS_QUAD
6385 case 'q': iv = va_arg(*args, Quad_t); break;
6386#endif
46fc3d4c 6387 }
6388 }
6389 else {
eb3fce90
JH		 6390 iv = (epix ? epix <= svmax : svix < svmax) ?
6391 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
46fc3d4c 6392 switch (intsize) {
6393 case 'h': iv = (short)iv; break;
be28567c 6394 default: break;
46fc3d4c 6395 case 'l': iv = (long)iv; break;
fc36a67e 6396 case 'V': break;
cf2093f6
JH		 6397#ifdef HAS_QUAD
6398 case 'q': iv = (Quad_t)iv; break;
6399#endif
46fc3d4c 6400 }
6401 }
6402 if (iv >= 0) {
6403 uv = iv;
6404 if (plus)
6405 esignbuf[esignlen++] = plus;
6406 }
6407 else {
6408 uv = -iv;
6409 esignbuf[esignlen++] = '-';
6410 }
6411 base = 10;
6412 goto integer;
6413
fc36a67e 6414 case 'U':
29fe7a80 6415#ifdef IV_IS_QUAD
22f3ae8c 6416 intsize = 'q';
29fe7a80 6417#else
fc36a67e 6418 intsize = 'l';
29fe7a80 6419#endif
fc36a67e 6420 /* FALL THROUGH */
6421 case 'u':
6422 base = 10;
6423 goto uns_integer;
6424
4f19785b
WSI		 6425 case 'b':
6426 base = 2;
6427 goto uns_integer;
6428
46fc3d4c 6429 case 'O':
29fe7a80 6430#ifdef IV_IS_QUAD
22f3ae8c 6431 intsize = 'q';
29fe7a80 6432#else
46fc3d4c 6433 intsize = 'l';
29fe7a80 6434#endif
46fc3d4c 6435 /* FALL THROUGH */
6436 case 'o':
6437 base = 8;
6438 goto uns_integer;
6439
6440 case 'X':
46fc3d4c 6441 case 'x':
6442 base = 16;
46fc3d4c 6443
6444 uns_integer:
b22c7a20 6445 if (vectorize) {
ba210ebe 6446 STRLEN ulen;
b22c7a20
GS		 6447 vector:
6448 if (!veclen) {
6449 vectorize = FALSE;
6450 break;
6451 }
6452 if (utf)
dcad2880 6453 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
b22c7a20 6454 else {
a05b299f 6455 uv = *vecstr;
b22c7a20
GS		 6456 ulen = 1;
6457 }
6458 vecstr += ulen;
6459 veclen -= ulen;
6460 }
6461 else if (args) {
46fc3d4c 6462 switch (intsize) {
6463 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6464 default: uv = va_arg(*args, unsigned); break;
6465 case 'l': uv = va_arg(*args, unsigned long); break;
fc36a67e 6466 case 'V': uv = va_arg(*args, UV); break;
cf2093f6
JH		 6467#ifdef HAS_QUAD
6468 case 'q': uv = va_arg(*args, Quad_t); break;
6469#endif
46fc3d4c 6470 }
6471 }
6472 else {
eb3fce90
JH		 6473 uv = (epix ? epix <= svmax : svix < svmax) ?
6474 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
46fc3d4c 6475 switch (intsize) {
6476 case 'h': uv = (unsigned short)uv; break;
be28567c 6477 default: break;
46fc3d4c 6478 case 'l': uv = (unsigned long)uv; break;
fc36a67e 6479 case 'V': break;
cf2093f6
JH		 6480#ifdef HAS_QUAD
6481 case 'q': uv = (Quad_t)uv; break;
6482#endif
46fc3d4c 6483 }
6484 }
6485
6486 integer:
46fc3d4c 6487 eptr = ebuf + sizeof ebuf;
fc36a67e 6488 switch (base) {
6489 unsigned dig;
6490 case 16:
c10ed8b9
HS		 6491 if (!uv)
6492 alt = FALSE;
1d7c1841
GS		 6493 p = (char*)((c == 'X')
6494 ? "0123456789ABCDEF" : "0123456789abcdef");
fc36a67e 6495 do {
6496 dig = uv & 15;
6497 *--eptr = p[dig];
6498 } while (uv >>= 4);
6499 if (alt) {
46fc3d4c 6500 esignbuf[esignlen++] = '0';
fc36a67e 6501 esignbuf[esignlen++] = c; /* 'x' or 'X' */
46fc3d4c 6502 }
fc36a67e 6503 break;
6504 case 8:
6505 do {
6506 dig = uv & 7;
6507 *--eptr = '0' + dig;
6508 } while (uv >>= 3);
6509 if (alt && *eptr != '0')
6510 *--eptr = '0';
6511 break;
4f19785b
WSI		 6512 case 2:
6513 do {
6514 dig = uv & 1;
6515 *--eptr = '0' + dig;
6516 } while (uv >>= 1);
eda88b6d
JH		 6517 if (alt) {
6518 esignbuf[esignlen++] = '0';
7481bb52 6519 esignbuf[esignlen++] = 'b';
eda88b6d 6520 }
4f19785b 6521 break;
fc36a67e 6522 default: /* it had better be ten or less */
6bc102ca 6523#if defined(PERL_Y2KWARN)
e476b1b5 6524 if (ckWARN(WARN_Y2K)) {
6bc102ca
GS		 6525 STRLEN n;
6526 char *s = SvPV(sv,n);
6527 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6528 && (n == 2 || !isDIGIT(s[n-3])))
6529 {
e476b1b5 6530 Perl_warner(aTHX_ WARN_Y2K,
6bc102ca
GS		 6531 "Possible Y2K bug: %%%c %s",
6532 c, "format string following '19'");
6533 }
6534 }
6535#endif
fc36a67e 6536 do {
6537 dig = uv % base;
6538 *--eptr = '0' + dig;
6539 } while (uv /= base);
6540 break;
46fc3d4c 6541 }
6542 elen = (ebuf + sizeof ebuf) - eptr;
c10ed8b9
HS		 6543 if (has_precis) {
6544 if (precis > elen)
6545 zeros = precis - elen;
6546 else if (precis == 0 && elen == 1 && *eptr == '0')
6547 elen = 0;
6548 }
46fc3d4c 6549 break;
6550
6551 /* FLOATING POINT */
6552
fc36a67e 6553 case 'F':
6554 c = 'f'; /* maybe %F isn't supported here */
6555 /* FALL THROUGH */
46fc3d4c 6556 case 'e': case 'E':
fc36a67e 6557 case 'f':
46fc3d4c 6558 case 'g': case 'G':
6559
6560 /* This is evil, but floating point is even more evil */
6561
b22c7a20 6562 vectorize = FALSE;
fc36a67e 6563 if (args)
65202027 6564 nv = va_arg(*args, NV);
fc36a67e 6565 else
eb3fce90
JH		 6566 nv = (epix ? epix <= svmax : svix < svmax) ?
6567 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
fc36a67e 6568
6569 need = 0;
6570 if (c != 'e' && c != 'E') {
6571 i = PERL_INT_MIN;
73b309ea 6572 (void)Perl_frexp(nv, &i);
fc36a67e 6573 if (i == PERL_INT_MIN)
cea2e8a9 6574 Perl_die(aTHX_ "panic: frexp");
c635e13b 6575 if (i > 0)
fc36a67e 6576 need = BIT_DIGITS(i);
6577 }
6578 need += has_precis ? precis : 6; /* known default */
6579 if (need < width)
6580 need = width;
6581
46fc3d4c 6582 need += 20; /* fudge factor */
80252599
GS		 6583 if (PL_efloatsize < need) {
6584 Safefree(PL_efloatbuf);
6585 PL_efloatsize = need + 20; /* more fudge */
6586 New(906, PL_efloatbuf, PL_efloatsize, char);
7d5ea4e7 6587 PL_efloatbuf[0] = '\0';
46fc3d4c 6588 }
6589
6590 eptr = ebuf + sizeof ebuf;
6591 *--eptr = '\0';
6592 *--eptr = c;
e5c81feb 6593#if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
cf2093f6 6594 {
e5c81feb
JH		 6595 /* Copy the one or more characters in a long double
6596 * format before the 'base' ([efgEFG]) character to
6597 * the format string. */
6598 static char const prifldbl[] = PERL_PRIfldbl;
6599 char const *p = prifldbl + sizeof(prifldbl) - 3;
6600 while (p >= prifldbl) { *--eptr = *p--; }
cf2093f6 6601 }
65202027 6602#endif
46fc3d4c 6603 if (has_precis) {
6604 base = precis;
6605 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6606 *--eptr = '.';
6607 }
6608 if (width) {
6609 base = width;
6610 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6611 }
6612 if (fill == '0')
6613 *--eptr = fill;
84902520
TB		 6614 if (left)
6615 *--eptr = '-';
46fc3d4c 6616 if (plus)
6617 *--eptr = plus;
6618 if (alt)
6619 *--eptr = '#';
6620 *--eptr = '%';
6621
bf24ccfa 6622 {
f93f4e46 6623 STORE_NUMERIC_STANDARD_SET_LOCAL();
e54dc35b 6624#ifdef USE_LOCALE_NUMERIC
f93f4e46
CK		 6625 if (!was_standard && maybe_tainted)
6626 *maybe_tainted = TRUE;
e54dc35b 6627#endif
bf24ccfa 6628 (void)sprintf(PL_efloatbuf, eptr, nv);
f93f4e46 6629 RESTORE_NUMERIC_STANDARD();
bf24ccfa 6630 }
8af02333 6631
80252599
GS		 6632 eptr = PL_efloatbuf;
6633 elen = strlen(PL_efloatbuf);
46fc3d4c 6634 break;
6635
fc36a67e 6636 /* SPECIAL */
6637
6638 case 'n':
b22c7a20 6639 vectorize = FALSE;
fc36a67e 6640 i = SvCUR(sv) - origlen;
6641 if (args) {
c635e13b 6642 switch (intsize) {
6643 case 'h': *(va_arg(*args, short*)) = i; break;
6644 default: *(va_arg(*args, int*)) = i; break;
6645 case 'l': *(va_arg(*args, long*)) = i; break;
6646 case 'V': *(va_arg(*args, IV*)) = i; break;
cf2093f6
JH		 6647#ifdef HAS_QUAD
6648 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6649#endif
c635e13b 6650 }
fc36a67e 6651 }
eb3fce90
JH		 6652 else if (epix ? epix <= svmax : svix < svmax)
6653 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
fc36a67e 6654 continue; /* not "break" */
6655
6656 /* UNKNOWN */
6657
46fc3d4c 6658 default:
fc36a67e 6659 unknown:
b22c7a20 6660 vectorize = FALSE;
599cee73 6661 if (!args && ckWARN(WARN_PRINTF) &&
533c011a 6662 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
c635e13b 6663 SV *msg = sv_newmortal();
cea2e8a9 6664 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
533c011a 6665 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
0f4b6630 6666 if (c) {
0f4b6630 6667 if (isPRINT(c))
1c846c1f 6668 Perl_sv_catpvf(aTHX_ msg,
0f4b6630
JH		 6669 "\"%%%c\"", c & 0xFF);
6670 else
6671 Perl_sv_catpvf(aTHX_ msg,
57def98f 6672 "\"%%\\%03"UVof"\"",
0f4b6630 6673 (UV)c & 0xFF);
0f4b6630 6674 } else
c635e13b 6675 sv_catpv(msg, "end of string");
894356b3 6676 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
c635e13b 6677 }
fb73857a 6678
6679 /* output mangled stuff ... */
6680 if (c == '\0')
6681 --q;
46fc3d4c 6682 eptr = p;
6683 elen = q - p;
fb73857a 6684
6685 /* ... right here, because formatting flags should not apply */
6686 SvGROW(sv, SvCUR(sv) + elen + 1);
6687 p = SvEND(sv);
6688 memcpy(p, eptr, elen);
6689 p += elen;
6690 *p = '\0';
6691 SvCUR(sv) = p - SvPVX(sv);
6692 continue; /* not "break" */
46fc3d4c 6693 }
6694
fc36a67e 6695 have = esignlen + zeros + elen;
46fc3d4c 6696 need = (have > width ? have : width);
6697 gap = need - have;
6698
b22c7a20 6699 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
46fc3d4c 6700 p = SvEND(sv);
6701 if (esignlen && fill == '0') {
6702 for (i = 0; i < esignlen; i++)
6703 *p++ = esignbuf[i];
6704 }
6705 if (gap && !left) {
6706 memset(p, fill, gap);
6707 p += gap;
6708 }
6709 if (esignlen && fill != '0') {
6710 for (i = 0; i < esignlen; i++)
6711 *p++ = esignbuf[i];
6712 }
fc36a67e 6713 if (zeros) {
6714 for (i = zeros; i; i--)
6715 *p++ = '0';
6716 }
46fc3d4c 6717 if (elen) {
6718 memcpy(p, eptr, elen);
6719 p += elen;
6720 }
6721 if (gap && left) {
6722 memset(p, ' ', gap);
6723 p += gap;
6724 }
b22c7a20
GS		 6725 if (vectorize) {
6726 if (veclen) {
6727 memcpy(p, dotstr, dotstrlen);
6728 p += dotstrlen;
6729 }
6730 else
6731 vectorize = FALSE; /* done iterating over vecstr */
6732 }
7e2040f0
GS		 6733 if (is_utf)
6734 SvUTF8_on(sv);
46fc3d4c 6735 *p = '\0';
6736 SvCUR(sv) = p - SvPVX(sv);
b22c7a20
GS		 6737 if (vectorize) {
6738 esignlen = 0;
6739 goto vector;
6740 }
46fc3d4c 6741 }
6742}
51371543 6743
1d7c1841
GS		 6744#if defined(USE_ITHREADS)
6745
6746#if defined(USE_THREADS)
6747# include "error: USE_THREADS and USE_ITHREADS are incompatible"
6748#endif
6749
1d7c1841
GS		 6750#ifndef GpREFCNT_inc
6751# define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6752#endif
6753
6754
6755#define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6756#define av_dup(s) (AV*)sv_dup((SV*)s)
6757#define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6758#define hv_dup(s) (HV*)sv_dup((SV*)s)
6759#define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6760#define cv_dup(s) (CV*)sv_dup((SV*)s)
6761#define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6762#define io_dup(s) (IO*)sv_dup((SV*)s)
6763#define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6764#define gv_dup(s) (GV*)sv_dup((SV*)s)
6765#define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6766#define SAVEPV(p) (p ? savepv(p) : Nullch)
6767#define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6768
6769REGEXP *
6770Perl_re_dup(pTHX_ REGEXP *r)
6771{
6772 /* XXX fix when pmop->op_pmregexp becomes shared */
6773 return ReREFCNT_inc(r);
6774}
6775
6776PerlIO *
6777Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6778{
6779 PerlIO *ret;
6780 if (!fp)
6781 return (PerlIO*)NULL;
6782
6783 /* look for it in the table first */
6784 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6785 if (ret)
6786 return ret;
6787
6788 /* create anew and remember what it is */
6789 ret = PerlIO_fdupopen(fp);
6790 ptr_table_store(PL_ptr_table, fp, ret);
6791 return ret;
6792}
6793
6794DIR *
6795Perl_dirp_dup(pTHX_ DIR *dp)
6796{
6797 if (!dp)
6798 return (DIR*)NULL;
6799 /* XXX TODO */
6800 return dp;
6801}
6802
6803GP *
6804Perl_gp_dup(pTHX_ GP *gp)
6805{
6806 GP *ret;
6807 if (!gp)
6808 return (GP*)NULL;
6809 /* look for it in the table first */
6810 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6811 if (ret)
6812 return ret;
6813
6814 /* create anew and remember what it is */
6815 Newz(0, ret, 1, GP);
6816 ptr_table_store(PL_ptr_table, gp, ret);
6817
6818 /* clone */
6819 ret->gp_refcnt = 0; /* must be before any other dups! */
6820 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6821 ret->gp_io = io_dup_inc(gp->gp_io);
6822 ret->gp_form = cv_dup_inc(gp->gp_form);
6823 ret->gp_av = av_dup_inc(gp->gp_av);
6824 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6825 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6826 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6827 ret->gp_cvgen = gp->gp_cvgen;
6828 ret->gp_flags = gp->gp_flags;
6829 ret->gp_line = gp->gp_line;
6830 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6831 return ret;
6832}
6833
6834MAGIC *
6835Perl_mg_dup(pTHX_ MAGIC *mg)
6836{
6837 MAGIC *mgret = (MAGIC*)NULL;
6838 MAGIC *mgprev;
6839 if (!mg)
6840 return (MAGIC*)NULL;
6841 /* look for it in the table first */
6842 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6843 if (mgret)
6844 return mgret;
6845
6846 for (; mg; mg = mg->mg_moremagic) {
6847 MAGIC *nmg;
6848 Newz(0, nmg, 1, MAGIC);
6849 if (!mgret)
6850 mgret = nmg;
6851 else
6852 mgprev->mg_moremagic = nmg;
6853 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6854 nmg->mg_private = mg->mg_private;
6855 nmg->mg_type = mg->mg_type;
6856 nmg->mg_flags = mg->mg_flags;
6857 if (mg->mg_type == 'r') {
6858 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6859 }
6860 else {
6861 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6862 ? sv_dup_inc(mg->mg_obj)
6863 : sv_dup(mg->mg_obj);
6864 }
6865 nmg->mg_len = mg->mg_len;
6866 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6867 if (mg->mg_ptr && mg->mg_type != 'g') {
6868 if (mg->mg_len >= 0) {
6869 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6870 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6871 AMT *amtp = (AMT*)mg->mg_ptr;
6872 AMT *namtp = (AMT*)nmg->mg_ptr;
6873 I32 i;
6874 for (i = 1; i < NofAMmeth; i++) {
6875 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6876 }
6877 }
6878 }
6879 else if (mg->mg_len == HEf_SVKEY)
6880 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6881 }
6882 mgprev = nmg;
6883 }
6884 return mgret;
6885}
6886
6887PTR_TBL_t *
6888Perl_ptr_table_new(pTHX)
6889{
6890 PTR_TBL_t *tbl;
6891 Newz(0, tbl, 1, PTR_TBL_t);
6892 tbl->tbl_max = 511;
6893 tbl->tbl_items = 0;
6894 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6895 return tbl;
6896}
6897
6898void *
6899Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6900{
6901 PTR_TBL_ENT_t *tblent;
d2a79402 6902 UV hash = PTR2UV(sv);
1d7c1841
GS		 6903 assert(tbl);
6904 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6905 for (; tblent; tblent = tblent->next) {
6906 if (tblent->oldval == sv)
6907 return tblent->newval;
6908 }
6909 return (void*)NULL;
6910}
6911
6912void
6913Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6914{
6915 PTR_TBL_ENT_t *tblent, **otblent;
6916 /* XXX this may be pessimal on platforms where pointers aren't good
6917 * hash values e.g. if they grow faster in the most significant
6918 * bits */
d2a79402 6919 UV hash = PTR2UV(oldv);
1d7c1841
GS		 6920 bool i = 1;
6921
6922 assert(tbl);
6923 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6924 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6925 if (tblent->oldval == oldv) {
6926 tblent->newval = newv;
6927 tbl->tbl_items++;
6928 return;
6929 }
6930 }
6931 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6932 tblent->oldval = oldv;
6933 tblent->newval = newv;
6934 tblent->next = *otblent;
6935 *otblent = tblent;
6936 tbl->tbl_items++;
6937 if (i && tbl->tbl_items > tbl->tbl_max)
6938 ptr_table_split(tbl);
6939}
6940
6941void
6942Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6943{
6944 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6945 UV oldsize = tbl->tbl_max + 1;
6946 UV newsize = oldsize * 2;
6947 UV i;
6948
6949 Renew(ary, newsize, PTR_TBL_ENT_t*);
6950 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6951 tbl->tbl_max = --newsize;
6952 tbl->tbl_ary = ary;
6953 for (i=0; i < oldsize; i++, ary++) {
6954 PTR_TBL_ENT_t **curentp, **entp, *ent;
6955 if (!*ary)
6956 continue;
6957 curentp = ary + oldsize;
6958 for (entp = ary, ent = *ary; ent; ent = *entp) {
d2a79402 6959 if ((newsize & PTR2UV(ent->oldval)) != i) {
1d7c1841
GS		 6960 *entp = ent->next;
6961 ent->next = *curentp;
6962 *curentp = ent;
6963 continue;
6964 }
6965 else
6966 entp = &ent->next;
6967 }
6968 }
6969}
6970
6971#ifdef DEBUGGING
6972char *PL_watch_pvx;
6973#endif
6974
6975SV *
6976Perl_sv_dup(pTHX_ SV *sstr)
6977{
1d7c1841
GS		 6978 SV *dstr;
6979
6980 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6981 return Nullsv;
6982 /* look for it in the table first */
6983 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6984 if (dstr)
6985 return dstr;
6986
6987 /* create anew and remember what it is */
6988 new_SV(dstr);
6989 ptr_table_store(PL_ptr_table, sstr, dstr);
6990
6991 /* clone */
6992 SvFLAGS(dstr) = SvFLAGS(sstr);
6993 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6994 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6995
6996#ifdef DEBUGGING
6997 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6998 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6999 PL_watch_pvx, SvPVX(sstr));
7000#endif
7001
7002 switch (SvTYPE(sstr)) {
7003 case SVt_NULL:
7004 SvANY(dstr) = NULL;
7005 break;
7006 case SVt_IV:
7007 SvANY(dstr) = new_XIV();
7008 SvIVX(dstr) = SvIVX(sstr);
7009 break;
7010 case SVt_NV:
7011 SvANY(dstr) = new_XNV();
7012 SvNVX(dstr) = SvNVX(sstr);
7013 break;
7014 case SVt_RV:
7015 SvANY(dstr) = new_XRV();
7016 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7017 break;
7018 case SVt_PV:
7019 SvANY(dstr) = new_XPV();
7020 SvCUR(dstr) = SvCUR(sstr);
7021 SvLEN(dstr) = SvLEN(sstr);
7022 if (SvROK(sstr))
7023 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7024 else if (SvPVX(sstr) && SvLEN(sstr))
7025 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7026 else
7027 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7028 break;
7029 case SVt_PVIV:
7030 SvANY(dstr) = new_XPVIV();
7031 SvCUR(dstr) = SvCUR(sstr);
7032 SvLEN(dstr) = SvLEN(sstr);
7033 SvIVX(dstr) = SvIVX(sstr);
7034 if (SvROK(sstr))
7035 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7036 else if (SvPVX(sstr) && SvLEN(sstr))
7037 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7038 else
7039 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7040 break;
7041 case SVt_PVNV:
7042 SvANY(dstr) = new_XPVNV();
7043 SvCUR(dstr) = SvCUR(sstr);
7044 SvLEN(dstr) = SvLEN(sstr);
7045 SvIVX(dstr) = SvIVX(sstr);
7046 SvNVX(dstr) = SvNVX(sstr);
7047 if (SvROK(sstr))
7048 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7049 else if (SvPVX(sstr) && SvLEN(sstr))
7050 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7051 else
7052 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7053 break;
7054 case SVt_PVMG:
7055 SvANY(dstr) = new_XPVMG();
7056 SvCUR(dstr) = SvCUR(sstr);
7057 SvLEN(dstr) = SvLEN(sstr);
7058 SvIVX(dstr) = SvIVX(sstr);
7059 SvNVX(dstr) = SvNVX(sstr);
7060 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7061 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7062 if (SvROK(sstr))
7063 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7064 else if (SvPVX(sstr) && SvLEN(sstr))
7065 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7066 else
7067 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7068 break;
7069 case SVt_PVBM:
7070 SvANY(dstr) = new_XPVBM();
7071 SvCUR(dstr) = SvCUR(sstr);
7072 SvLEN(dstr) = SvLEN(sstr);
7073 SvIVX(dstr) = SvIVX(sstr);
7074 SvNVX(dstr) = SvNVX(sstr);
7075 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7076 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7077 if (SvROK(sstr))
7078 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7079 else if (SvPVX(sstr) && SvLEN(sstr))
7080 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7081 else
7082 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7083 BmRARE(dstr) = BmRARE(sstr);
7084 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7085 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7086 break;
7087 case SVt_PVLV:
7088 SvANY(dstr) = new_XPVLV();
7089 SvCUR(dstr) = SvCUR(sstr);
7090 SvLEN(dstr) = SvLEN(sstr);
7091 SvIVX(dstr) = SvIVX(sstr);
7092 SvNVX(dstr) = SvNVX(sstr);
7093 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7094 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7095 if (SvROK(sstr))
7096 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7097 else if (SvPVX(sstr) && SvLEN(sstr))
7098 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7099 else
7100 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7101 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7102 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7103 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7104 LvTYPE(dstr) = LvTYPE(sstr);
7105 break;
7106 case SVt_PVGV:
7107 SvANY(dstr) = new_XPVGV();
7108 SvCUR(dstr) = SvCUR(sstr);
7109 SvLEN(dstr) = SvLEN(sstr);
7110 SvIVX(dstr) = SvIVX(sstr);
7111 SvNVX(dstr) = SvNVX(sstr);
7112 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7113 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7114 if (SvROK(sstr))
7115 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7116 else if (SvPVX(sstr) && SvLEN(sstr))
7117 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7118 else
7119 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7120 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7121 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7122 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7123 GvFLAGS(dstr) = GvFLAGS(sstr);
7124 GvGP(dstr) = gp_dup(GvGP(sstr));
7125 (void)GpREFCNT_inc(GvGP(dstr));
7126 break;
7127 case SVt_PVIO:
7128 SvANY(dstr) = new_XPVIO();
7129 SvCUR(dstr) = SvCUR(sstr);
7130 SvLEN(dstr) = SvLEN(sstr);
7131 SvIVX(dstr) = SvIVX(sstr);
7132 SvNVX(dstr) = SvNVX(sstr);
7133 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7134 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7135 if (SvROK(sstr))
7136 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7137 else if (SvPVX(sstr) && SvLEN(sstr))
7138 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7139 else
7140 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7141 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7142 if (IoOFP(sstr) == IoIFP(sstr))
7143 IoOFP(dstr) = IoIFP(dstr);
7144 else
7145 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7146 /* PL_rsfp_filters entries have fake IoDIRP() */
7147 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7148 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7149 else
7150 IoDIRP(dstr) = IoDIRP(sstr);
7151 IoLINES(dstr) = IoLINES(sstr);
7152 IoPAGE(dstr) = IoPAGE(sstr);
7153 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7154 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7155 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7156 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7157 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7158 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7159 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7160 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7161 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7162 IoTYPE(dstr) = IoTYPE(sstr);
7163 IoFLAGS(dstr) = IoFLAGS(sstr);
7164 break;
7165 case SVt_PVAV:
7166 SvANY(dstr) = new_XPVAV();
7167 SvCUR(dstr) = SvCUR(sstr);
7168 SvLEN(dstr) = SvLEN(sstr);
7169 SvIVX(dstr) = SvIVX(sstr);
7170 SvNVX(dstr) = SvNVX(sstr);
7171 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7172 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7173 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7174 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7175 if (AvARRAY((AV*)sstr)) {
7176 SV **dst_ary, **src_ary;
7177 SSize_t items = AvFILLp((AV*)sstr) + 1;
7178
7179 src_ary = AvARRAY((AV*)sstr);
7180 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7181 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7182 SvPVX(dstr) = (char*)dst_ary;
7183 AvALLOC((AV*)dstr) = dst_ary;
7184 if (AvREAL((AV*)sstr)) {
7185 while (items-- > 0)
7186 *dst_ary++ = sv_dup_inc(*src_ary++);
7187 }
7188 else {
7189 while (items-- > 0)
7190 *dst_ary++ = sv_dup(*src_ary++);
7191 }
7192 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7193 while (items-- > 0) {
7194 *dst_ary++ = &PL_sv_undef;
7195 }
7196 }
7197 else {
7198 SvPVX(dstr) = Nullch;
7199 AvALLOC((AV*)dstr) = (SV**)NULL;
7200 }
7201 break;
7202 case SVt_PVHV:
7203 SvANY(dstr) = new_XPVHV();
7204 SvCUR(dstr) = SvCUR(sstr);
7205 SvLEN(dstr) = SvLEN(sstr);
7206 SvIVX(dstr) = SvIVX(sstr);
7207 SvNVX(dstr) = SvNVX(sstr);
7208 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7209 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7210 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7211 if (HvARRAY((HV*)sstr)) {
1d7c1841
GS		 7212 STRLEN i = 0;
7213 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7214 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7215 Newz(0, dxhv->xhv_array,
7216 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7217 while (i <= sxhv->xhv_max) {
7218 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7219 !!HvSHAREKEYS(sstr));
7220 ++i;
7221 }
7222 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7223 }
7224 else {
7225 SvPVX(dstr) = Nullch;
7226 HvEITER((HV*)dstr) = (HE*)NULL;
7227 }
7228 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7229 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7230 break;
7231 case SVt_PVFM:
7232 SvANY(dstr) = new_XPVFM();
7233 FmLINES(dstr) = FmLINES(sstr);
7234 goto dup_pvcv;
7235 /* NOTREACHED */
7236 case SVt_PVCV:
7237 SvANY(dstr) = new_XPVCV();
7238dup_pvcv:
7239 SvCUR(dstr) = SvCUR(sstr);
7240 SvLEN(dstr) = SvLEN(sstr);
7241 SvIVX(dstr) = SvIVX(sstr);
7242 SvNVX(dstr) = SvNVX(sstr);
7243 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7244 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7245 if (SvPVX(sstr) && SvLEN(sstr))
7246 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7247 else
7248 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7249 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7250 CvSTART(dstr) = CvSTART(sstr);
7251 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7252 CvXSUB(dstr) = CvXSUB(sstr);
7253 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7254 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7255 CvDEPTH(dstr) = CvDEPTH(sstr);
7256 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7257 /* XXX padlists are real, but pretend to be not */
7258 AvREAL_on(CvPADLIST(sstr));
7259 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7260 AvREAL_off(CvPADLIST(sstr));
7261 AvREAL_off(CvPADLIST(dstr));
7262 }
7263 else
7264 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7265 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7266 CvFLAGS(dstr) = CvFLAGS(sstr);
7267 break;
7268 default:
7269 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7270 break;
7271 }
7272
7273 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7274 ++PL_sv_objcount;
7275
7276 return dstr;
7277}
7278
7279PERL_CONTEXT *
7280Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7281{
7282 PERL_CONTEXT *ncxs;
7283
7284 if (!cxs)
7285 return (PERL_CONTEXT*)NULL;
7286
7287 /* look for it in the table first */
7288 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7289 if (ncxs)
7290 return ncxs;
7291
7292 /* create anew and remember what it is */
7293 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7294 ptr_table_store(PL_ptr_table, cxs, ncxs);
7295
7296 while (ix >= 0) {
7297 PERL_CONTEXT *cx = &cxs[ix];
7298 PERL_CONTEXT *ncx = &ncxs[ix];
7299 ncx->cx_type = cx->cx_type;
7300 if (CxTYPE(cx) == CXt_SUBST) {
7301 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7302 }
7303 else {
7304 ncx->blk_oldsp = cx->blk_oldsp;
7305 ncx->blk_oldcop = cx->blk_oldcop;
7306 ncx->blk_oldretsp = cx->blk_oldretsp;
7307 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7308 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7309 ncx->blk_oldpm = cx->blk_oldpm;
7310 ncx->blk_gimme = cx->blk_gimme;
7311 switch (CxTYPE(cx)) {
7312 case CXt_SUB:
7313 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7314 ? cv_dup_inc(cx->blk_sub.cv)
7315 : cv_dup(cx->blk_sub.cv));
7316 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7317 ? av_dup_inc(cx->blk_sub.argarray)
7318 : Nullav);
7319 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7320 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7321 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7322 ncx->blk_sub.lval = cx->blk_sub.lval;
7323 break;
7324 case CXt_EVAL:
7325 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7326 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
0f79a09d 7327 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
1d7c1841
GS		 7328 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7329 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7330 break;
7331 case CXt_LOOP:
7332 ncx->blk_loop.label = cx->blk_loop.label;
7333 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7334 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7335 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7336 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7337 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7338 ? cx->blk_loop.iterdata
7339 : gv_dup((GV*)cx->blk_loop.iterdata));
a4b82a6f
GS		 7340 ncx->blk_loop.oldcurpad
7341 = (SV**)ptr_table_fetch(PL_ptr_table,
7342 cx->blk_loop.oldcurpad);
1d7c1841
GS		 7343 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7344 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7345 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7346 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7347 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7348 break;
7349 case CXt_FORMAT:
7350 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7351 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7352 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7353 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7354 break;
7355 case CXt_BLOCK:
7356 case CXt_NULL:
7357 break;
7358 }
7359 }
7360 --ix;
7361 }
7362 return ncxs;
7363}
7364
7365PERL_SI *
7366Perl_si_dup(pTHX_ PERL_SI *si)
7367{
7368 PERL_SI *nsi;
7369
7370 if (!si)
7371 return (PERL_SI*)NULL;
7372
7373 /* look for it in the table first */
7374 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7375 if (nsi)
7376 return nsi;
7377
7378 /* create anew and remember what it is */
7379 Newz(56, nsi, 1, PERL_SI);
7380 ptr_table_store(PL_ptr_table, si, nsi);
7381
7382 nsi->si_stack = av_dup_inc(si->si_stack);
7383 nsi->si_cxix = si->si_cxix;
7384 nsi->si_cxmax = si->si_cxmax;
7385 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7386 nsi->si_type = si->si_type;
7387 nsi->si_prev = si_dup(si->si_prev);
7388 nsi->si_next = si_dup(si->si_next);
7389 nsi->si_markoff = si->si_markoff;
7390
7391 return nsi;
7392}
7393
7394#define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7395#define TOPINT(ss,ix) ((ss)[ix].any_i32)
7396#define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7397#define TOPLONG(ss,ix) ((ss)[ix].any_long)
7398#define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7399#define TOPIV(ss,ix) ((ss)[ix].any_iv)
7400#define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7401#define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7402#define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7403#define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7404#define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7405#define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7406
7407/* XXXXX todo */
7408#define pv_dup_inc(p) SAVEPV(p)
7409#define pv_dup(p) SAVEPV(p)
7410#define svp_dup_inc(p,pp) any_dup(p,pp)
7411
7412void *
7413Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7414{
7415 void *ret;
7416
7417 if (!v)
7418 return (void*)NULL;
7419
7420 /* look for it in the table first */
7421 ret = ptr_table_fetch(PL_ptr_table, v);
7422 if (ret)
7423 return ret;
7424
7425 /* see if it is part of the interpreter structure */
7426 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7427 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7428 else
7429 ret = v;
7430
7431 return ret;
7432}
7433
7434ANY *
7435Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7436{
7437 ANY *ss = proto_perl->Tsavestack;
7438 I32 ix = proto_perl->Tsavestack_ix;
7439 I32 max = proto_perl->Tsavestack_max;
7440 ANY *nss;
7441 SV *sv;
7442 GV *gv;
7443 AV *av;
7444 HV *hv;
7445 void* ptr;
7446 int intval;
7447 long longval;
7448 GP *gp;
7449 IV iv;
7450 I32 i;
7451 char *c;
7452 void (*dptr) (void*);
7453 void (*dxptr) (pTHXo_ void*);
e977893f 7454 OP *o;
1d7c1841
GS		 7455
7456 Newz(54, nss, max, ANY);
7457
7458 while (ix > 0) {
7459 i = POPINT(ss,ix);
7460 TOPINT(nss,ix) = i;
7461 switch (i) {
7462 case SAVEt_ITEM: /* normal string */
7463 sv = (SV*)POPPTR(ss,ix);
7464 TOPPTR(nss,ix) = sv_dup_inc(sv);
7465 sv = (SV*)POPPTR(ss,ix);
7466 TOPPTR(nss,ix) = sv_dup_inc(sv);
7467 break;
7468 case SAVEt_SV: /* scalar reference */
7469 sv = (SV*)POPPTR(ss,ix);
7470 TOPPTR(nss,ix) = sv_dup_inc(sv);
7471 gv = (GV*)POPPTR(ss,ix);
7472 TOPPTR(nss,ix) = gv_dup_inc(gv);
7473 break;
f4dd75d9
GS		 7474 case SAVEt_GENERIC_PVREF: /* generic char* */
7475 c = (char*)POPPTR(ss,ix);
7476 TOPPTR(nss,ix) = pv_dup(c);
7477 ptr = POPPTR(ss,ix);
7478 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7479 break;
1d7c1841
GS		 7480 case SAVEt_GENERIC_SVREF: /* generic sv */
7481 case SAVEt_SVREF: /* scalar reference */
7482 sv = (SV*)POPPTR(ss,ix);
7483 TOPPTR(nss,ix) = sv_dup_inc(sv);
7484 ptr = POPPTR(ss,ix);
7485 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7486 break;
7487 case SAVEt_AV: /* array reference */
7488 av = (AV*)POPPTR(ss,ix);
7489 TOPPTR(nss,ix) = av_dup_inc(av);
7490 gv = (GV*)POPPTR(ss,ix);
7491 TOPPTR(nss,ix) = gv_dup(gv);
7492 break;
7493 case SAVEt_HV: /* hash reference */
7494 hv = (HV*)POPPTR(ss,ix);
7495 TOPPTR(nss,ix) = hv_dup_inc(hv);
7496 gv = (GV*)POPPTR(ss,ix);
7497 TOPPTR(nss,ix) = gv_dup(gv);
7498 break;
7499 case SAVEt_INT: /* int reference */
7500 ptr = POPPTR(ss,ix);
7501 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7502 intval = (int)POPINT(ss,ix);
7503 TOPINT(nss,ix) = intval;
7504 break;
7505 case SAVEt_LONG: /* long reference */
7506 ptr = POPPTR(ss,ix);
7507 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7508 longval = (long)POPLONG(ss,ix);
7509 TOPLONG(nss,ix) = longval;
7510 break;
7511 case SAVEt_I32: /* I32 reference */
7512 case SAVEt_I16: /* I16 reference */
7513 case SAVEt_I8: /* I8 reference */
7514 ptr = POPPTR(ss,ix);
7515 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7516 i = POPINT(ss,ix);
7517 TOPINT(nss,ix) = i;
7518 break;
7519 case SAVEt_IV: /* IV reference */
7520 ptr = POPPTR(ss,ix);
7521 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7522 iv = POPIV(ss,ix);
7523 TOPIV(nss,ix) = iv;
7524 break;
7525 case SAVEt_SPTR: /* SV* reference */
7526 ptr = POPPTR(ss,ix);
7527 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7528 sv = (SV*)POPPTR(ss,ix);
7529 TOPPTR(nss,ix) = sv_dup(sv);
7530 break;
7531 case SAVEt_VPTR: /* random* reference */
7532 ptr = POPPTR(ss,ix);
7533 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7534 ptr = POPPTR(ss,ix);
7535 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7536 break;
7537 case SAVEt_PPTR: /* char* reference */
7538 ptr = POPPTR(ss,ix);
7539 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7540 c = (char*)POPPTR(ss,ix);
7541 TOPPTR(nss,ix) = pv_dup(c);
7542 break;
7543 case SAVEt_HPTR: /* HV* reference */
7544 ptr = POPPTR(ss,ix);
7545 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7546 hv = (HV*)POPPTR(ss,ix);
7547 TOPPTR(nss,ix) = hv_dup(hv);
7548 break;
7549 case SAVEt_APTR: /* AV* reference */
7550 ptr = POPPTR(ss,ix);
7551 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7552 av = (AV*)POPPTR(ss,ix);
7553 TOPPTR(nss,ix) = av_dup(av);
7554 break;
7555 case SAVEt_NSTAB:
7556 gv = (GV*)POPPTR(ss,ix);
7557 TOPPTR(nss,ix) = gv_dup(gv);
7558 break;
7559 case SAVEt_GP: /* scalar reference */
7560 gp = (GP*)POPPTR(ss,ix);
7561 TOPPTR(nss,ix) = gp = gp_dup(gp);
7562 (void)GpREFCNT_inc(gp);
7563 gv = (GV*)POPPTR(ss,ix);
7564 TOPPTR(nss,ix) = gv_dup_inc(c);
7565 c = (char*)POPPTR(ss,ix);
7566 TOPPTR(nss,ix) = pv_dup(c);
7567 iv = POPIV(ss,ix);
7568 TOPIV(nss,ix) = iv;
7569 iv = POPIV(ss,ix);
7570 TOPIV(nss,ix) = iv;
7571 break;
7572 case SAVEt_FREESV:
7573 sv = (SV*)POPPTR(ss,ix);
7574 TOPPTR(nss,ix) = sv_dup_inc(sv);
7575 break;
7576 case SAVEt_FREEOP:
7577 ptr = POPPTR(ss,ix);
7578 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7579 /* these are assumed to be refcounted properly */
7580 switch (((OP*)ptr)->op_type) {
7581 case OP_LEAVESUB:
7582 case OP_LEAVESUBLV:
7583 case OP_LEAVEEVAL:
7584 case OP_LEAVE:
7585 case OP_SCOPE:
7586 case OP_LEAVEWRITE:
e977893f
GS		 7587 TOPPTR(nss,ix) = ptr;
7588 o = (OP*)ptr;
7589 OpREFCNT_inc(o);
1d7c1841
GS		 7590 break;
7591 default:
7592 TOPPTR(nss,ix) = Nullop;
7593 break;
7594 }
7595 }
7596 else
7597 TOPPTR(nss,ix) = Nullop;
7598 break;
7599 case SAVEt_FREEPV:
7600 c = (char*)POPPTR(ss,ix);
7601 TOPPTR(nss,ix) = pv_dup_inc(c);
7602 break;
7603 case SAVEt_CLEARSV:
7604 longval = POPLONG(ss,ix);
7605 TOPLONG(nss,ix) = longval;
7606 break;
7607 case SAVEt_DELETE:
7608 hv = (HV*)POPPTR(ss,ix);
7609 TOPPTR(nss,ix) = hv_dup_inc(hv);
7610 c = (char*)POPPTR(ss,ix);
7611 TOPPTR(nss,ix) = pv_dup_inc(c);
7612 i = POPINT(ss,ix);
7613 TOPINT(nss,ix) = i;
7614 break;
7615 case SAVEt_DESTRUCTOR:
7616 ptr = POPPTR(ss,ix);
7617 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7618 dptr = POPDPTR(ss,ix);
ef75a179 7619 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
1d7c1841
GS		 7620 break;
7621 case SAVEt_DESTRUCTOR_X:
7622 ptr = POPPTR(ss,ix);
7623 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7624 dxptr = POPDXPTR(ss,ix);
ef75a179 7625 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
1d7c1841
GS		 7626 break;
7627 case SAVEt_REGCONTEXT:
7628 case SAVEt_ALLOC:
7629 i = POPINT(ss,ix);
7630 TOPINT(nss,ix) = i;
7631 ix -= i;
7632 break;
7633 case SAVEt_STACK_POS: /* Position on Perl stack */
7634 i = POPINT(ss,ix);
7635 TOPINT(nss,ix) = i;
7636 break;
7637 case SAVEt_AELEM: /* array element */
7638 sv = (SV*)POPPTR(ss,ix);
7639 TOPPTR(nss,ix) = sv_dup_inc(sv);
7640 i = POPINT(ss,ix);
7641 TOPINT(nss,ix) = i;
7642 av = (AV*)POPPTR(ss,ix);
7643 TOPPTR(nss,ix) = av_dup_inc(av);
7644 break;
7645 case SAVEt_HELEM: /* hash element */
7646 sv = (SV*)POPPTR(ss,ix);
7647 TOPPTR(nss,ix) = sv_dup_inc(sv);
7648 sv = (SV*)POPPTR(ss,ix);
7649 TOPPTR(nss,ix) = sv_dup_inc(sv);
7650 hv = (HV*)POPPTR(ss,ix);
7651 TOPPTR(nss,ix) = hv_dup_inc(hv);
7652 break;
7653 case SAVEt_OP:
7654 ptr = POPPTR(ss,ix);
7655 TOPPTR(nss,ix) = ptr;
7656 break;
7657 case SAVEt_HINTS:
7658 i = POPINT(ss,ix);
7659 TOPINT(nss,ix) = i;
7660 break;
c4410b1b
GS		 7661 case SAVEt_COMPPAD:
7662 av = (AV*)POPPTR(ss,ix);
7663 TOPPTR(nss,ix) = av_dup(av);
7664 break;
1d7c1841
GS		 7665 default:
7666 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7667 }
7668 }
7669
7670 return nss;
7671}
7672
7673#ifdef PERL_OBJECT
7674#include "XSUB.h"
7675#endif
7676
7677PerlInterpreter *
7678perl_clone(PerlInterpreter *proto_perl, UV flags)
7679{
7680#ifdef PERL_OBJECT
7681 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7682#endif
7683
7684#ifdef PERL_IMPLICIT_SYS
7685 return perl_clone_using(proto_perl, flags,
7686 proto_perl->IMem,
7687 proto_perl->IMemShared,
7688 proto_perl->IMemParse,
7689 proto_perl->IEnv,
7690 proto_perl->IStdIO,
7691 proto_perl->ILIO,
7692 proto_perl->IDir,
7693 proto_perl->ISock,
7694 proto_perl->IProc);
7695}
7696
7697PerlInterpreter *
7698perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7699 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7700 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7701 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7702 struct IPerlDir* ipD, struct IPerlSock* ipS,
7703 struct IPerlProc* ipP)
7704{
7705 /* XXX many of the string copies here can be optimized if they're
7706 * constants; they need to be allocated as common memory and just
7707 * their pointers copied. */
7708
7709 IV i;
1d7c1841
GS		 7710# ifdef PERL_OBJECT
7711 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7712 ipD, ipS, ipP);
ba869deb 7713 PERL_SET_THX(pPerl);
1d7c1841
GS		 7714# else /* !PERL_OBJECT */
7715 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
ba869deb 7716 PERL_SET_THX(my_perl);
1d7c1841
GS		 7717
7718# ifdef DEBUGGING
7719 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7720 PL_markstack = 0;
7721 PL_scopestack = 0;
7722 PL_savestack = 0;
7723 PL_retstack = 0;
7724# else /* !DEBUGGING */
7725 Zero(my_perl, 1, PerlInterpreter);
7726# endif /* DEBUGGING */
7727
7728 /* host pointers */
7729 PL_Mem = ipM;
7730 PL_MemShared = ipMS;
7731 PL_MemParse = ipMP;
7732 PL_Env = ipE;
7733 PL_StdIO = ipStd;
7734 PL_LIO = ipLIO;
7735 PL_Dir = ipD;
7736 PL_Sock = ipS;
7737 PL_Proc = ipP;
7738# endif /* PERL_OBJECT */
7739#else /* !PERL_IMPLICIT_SYS */
7740 IV i;
1d7c1841 7741 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
ba869deb 7742 PERL_SET_THX(my_perl);
1d7c1841
GS		 7743
7744# ifdef DEBUGGING
7745 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7746 PL_markstack = 0;
7747 PL_scopestack = 0;
7748 PL_savestack = 0;
7749 PL_retstack = 0;
7750# else /* !DEBUGGING */
7751 Zero(my_perl, 1, PerlInterpreter);
7752# endif /* DEBUGGING */
7753#endif /* PERL_IMPLICIT_SYS */
7754
7755 /* arena roots */
7756 PL_xiv_arenaroot = NULL;
7757 PL_xiv_root = NULL;
612f20c3 7758 PL_xnv_arenaroot = NULL;
1d7c1841 7759 PL_xnv_root = NULL;
612f20c3 7760 PL_xrv_arenaroot = NULL;
1d7c1841 7761 PL_xrv_root = NULL;
612f20c3 7762 PL_xpv_arenaroot = NULL;
1d7c1841 7763 PL_xpv_root = NULL;
612f20c3 7764 PL_xpviv_arenaroot = NULL;
1d7c1841 7765 PL_xpviv_root = NULL;
612f20c3 7766 PL_xpvnv_arenaroot = NULL;
1d7c1841 7767 PL_xpvnv_root = NULL;
612f20c3 7768 PL_xpvcv_arenaroot = NULL;
1d7c1841 7769 PL_xpvcv_root = NULL;
612f20c3 7770 PL_xpvav_arenaroot = NULL;
1d7c1841 7771 PL_xpvav_root = NULL;
612f20c3 7772 PL_xpvhv_arenaroot = NULL;
1d7c1841 7773 PL_xpvhv_root = NULL;
612f20c3 7774 PL_xpvmg_arenaroot = NULL;
1d7c1841 7775 PL_xpvmg_root = NULL;
612f20c3 7776 PL_xpvlv_arenaroot = NULL;
1d7c1841 7777 PL_xpvlv_root = NULL;
612f20c3 7778 PL_xpvbm_arenaroot = NULL;
1d7c1841 7779 PL_xpvbm_root = NULL;
612f20c3 7780 PL_he_arenaroot = NULL;
1d7c1841
GS		 7781 PL_he_root = NULL;
7782 PL_nice_chunk = NULL;
7783 PL_nice_chunk_size = 0;
7784 PL_sv_count = 0;
7785 PL_sv_objcount = 0;
7786 PL_sv_root = Nullsv;
7787 PL_sv_arenaroot = Nullsv;
7788
7789 PL_debug = proto_perl->Idebug;
7790
7791 /* create SV map for pointer relocation */
7792 PL_ptr_table = ptr_table_new();
7793
7794 /* initialize these special pointers as early as possible */
7795 SvANY(&PL_sv_undef) = NULL;
7796 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7797 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7798 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7799
7800#ifdef PERL_OBJECT
7801 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7802#else
7803 SvANY(&PL_sv_no) = new_XPVNV();
7804#endif
7805 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7806 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7807 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7808 SvCUR(&PL_sv_no) = 0;
7809 SvLEN(&PL_sv_no) = 1;
7810 SvNVX(&PL_sv_no) = 0;
7811 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7812
7813#ifdef PERL_OBJECT
7814 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7815#else
7816 SvANY(&PL_sv_yes) = new_XPVNV();
7817#endif
7818 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7819 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7820 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7821 SvCUR(&PL_sv_yes) = 1;
7822 SvLEN(&PL_sv_yes) = 2;
7823 SvNVX(&PL_sv_yes) = 1;
7824 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7825
7826 /* create shared string table */
7827 PL_strtab = newHV();
7828 HvSHAREKEYS_off(PL_strtab);
7829 hv_ksplit(PL_strtab, 512);
7830 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7831
7832 PL_compiling = proto_perl->Icompiling;
7833 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7834 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7835 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7836 if (!specialWARN(PL_compiling.cop_warnings))
7837 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7838 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7839
7840 /* pseudo environmental stuff */
7841 PL_origargc = proto_perl->Iorigargc;
7842 i = PL_origargc;
7843 New(0, PL_origargv, i+1, char*);
7844 PL_origargv[i] = '\0';
7845 while (i-- > 0) {
7846 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7847 }
7848 PL_envgv = gv_dup(proto_perl->Ienvgv);
7849 PL_incgv = gv_dup(proto_perl->Iincgv);
7850 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7851 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7852 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7853 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7854
7855 /* switches */
7856 PL_minus_c = proto_perl->Iminus_c;
a7cb1f99 7857 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
1d7c1841
GS		 7858 PL_localpatches = proto_perl->Ilocalpatches;
7859 PL_splitstr = proto_perl->Isplitstr;
7860 PL_preprocess = proto_perl->Ipreprocess;
7861 PL_minus_n = proto_perl->Iminus_n;
7862 PL_minus_p = proto_perl->Iminus_p;
7863 PL_minus_l = proto_perl->Iminus_l;
7864 PL_minus_a = proto_perl->Iminus_a;
7865 PL_minus_F = proto_perl->Iminus_F;
7866 PL_doswitches = proto_perl->Idoswitches;
7867 PL_dowarn = proto_perl->Idowarn;
7868 PL_doextract = proto_perl->Idoextract;
7869 PL_sawampersand = proto_perl->Isawampersand;
7870 PL_unsafe = proto_perl->Iunsafe;
7871 PL_inplace = SAVEPV(proto_perl->Iinplace);
7872 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7873 PL_perldb = proto_perl->Iperldb;
7874 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7875
7876 /* magical thingies */
7877 /* XXX time(&PL_basetime) when asked for? */
7878 PL_basetime = proto_perl->Ibasetime;
7879 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7880
7881 PL_maxsysfd = proto_perl->Imaxsysfd;
7882 PL_multiline = proto_perl->Imultiline;
7883 PL_statusvalue = proto_perl->Istatusvalue;
7884#ifdef VMS
7885 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7886#endif
7887
7888 /* shortcuts to various I/O objects */
7889 PL_stdingv = gv_dup(proto_perl->Istdingv);
7890 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7891 PL_defgv = gv_dup(proto_perl->Idefgv);
7892 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7893 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7894 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7895
7896 /* shortcuts to regexp stuff */
7897 PL_replgv = gv_dup(proto_perl->Ireplgv);
7898
7899 /* shortcuts to misc objects */
7900 PL_errgv = gv_dup(proto_perl->Ierrgv);
7901
7902 /* shortcuts to debugging objects */
7903 PL_DBgv = gv_dup(proto_perl->IDBgv);
7904 PL_DBline = gv_dup(proto_perl->IDBline);
7905 PL_DBsub = gv_dup(proto_perl->IDBsub);
7906 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7907 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7908 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7909 PL_lineary = av_dup(proto_perl->Ilineary);
7910 PL_dbargs = av_dup(proto_perl->Idbargs);
7911
7912 /* symbol tables */
7913 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7914 PL_curstash = hv_dup(proto_perl->Tcurstash);
7915 PL_debstash = hv_dup(proto_perl->Idebstash);
7916 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7917 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7918
7919 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7920 PL_endav = av_dup_inc(proto_perl->Iendav);
7d30b5c4 7921 PL_checkav = av_dup_inc(proto_perl->Icheckav);
1d7c1841
GS		 7922 PL_initav = av_dup_inc(proto_perl->Iinitav);
7923
7924 PL_sub_generation = proto_perl->Isub_generation;
7925
7926 /* funky return mechanisms */
7927 PL_forkprocess = proto_perl->Iforkprocess;
7928
7929 /* subprocess state */
7930 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7931
7932 /* internal state */
7933 PL_tainting = proto_perl->Itainting;
7934 PL_maxo = proto_perl->Imaxo;
7935 if (proto_perl->Iop_mask)
7936 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7937 else
7938 PL_op_mask = Nullch;
7939
7940 /* current interpreter roots */
7941 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7942 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7943 PL_main_start = proto_perl->Imain_start;
e977893f 7944 PL_eval_root = proto_perl->Ieval_root;
1d7c1841
GS		 7945 PL_eval_start = proto_perl->Ieval_start;
7946
7947 /* runtime control stuff */
7948 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7949 PL_copline = proto_perl->Icopline;
7950
7951 PL_filemode = proto_perl->Ifilemode;
7952 PL_lastfd = proto_perl->Ilastfd;
7953 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7954 PL_Argv = NULL;
7955 PL_Cmd = Nullch;
7956 PL_gensym = proto_perl->Igensym;
7957 PL_preambled = proto_perl->Ipreambled;
7958 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7959 PL_laststatval = proto_perl->Ilaststatval;
7960 PL_laststype = proto_perl->Ilaststype;
7961 PL_mess_sv = Nullsv;
7962
7963 PL_orslen = proto_perl->Iorslen;
7964 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7965 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7966
7967 /* interpreter atexit processing */
7968 PL_exitlistlen = proto_perl->Iexitlistlen;
7969 if (PL_exitlistlen) {
7970 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7971 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7972 }
7973 else
7974 PL_exitlist = (PerlExitListEntry*)NULL;
7975 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7976
7977 PL_profiledata = NULL;
7978 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7979 /* PL_rsfp_filters entries have fake IoDIRP() */
7980 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7981
7982 PL_compcv = cv_dup(proto_perl->Icompcv);
7983 PL_comppad = av_dup(proto_perl->Icomppad);
7984 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7985 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7986 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7987 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7988 proto_perl->Tcurpad);
7989
7990#ifdef HAVE_INTERP_INTERN
7991 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7992#endif
7993
7994 /* more statics moved here */
7995 PL_generation = proto_perl->Igeneration;
7996 PL_DBcv = cv_dup(proto_perl->IDBcv);
1d7c1841
GS		 7997
7998 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7999 PL_in_clean_all = proto_perl->Iin_clean_all;
8000
8001 PL_uid = proto_perl->Iuid;
8002 PL_euid = proto_perl->Ieuid;
8003 PL_gid = proto_perl->Igid;
8004 PL_egid = proto_perl->Iegid;
8005 PL_nomemok = proto_perl->Inomemok;
8006 PL_an = proto_perl->Ian;
8007 PL_cop_seqmax = proto_perl->Icop_seqmax;
8008 PL_op_seqmax = proto_perl->Iop_seqmax;
8009 PL_evalseq = proto_perl->Ievalseq;
8010 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8011 PL_origalen = proto_perl->Iorigalen;
8012 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8013 PL_osname = SAVEPV(proto_perl->Iosname);
8014 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8015 PL_sighandlerp = proto_perl->Isighandlerp;
8016
8017
8018 PL_runops = proto_perl->Irunops;
8019
8020 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8021
8022#ifdef CSH
8023 PL_cshlen = proto_perl->Icshlen;
8024 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8025#endif
8026
8027 PL_lex_state = proto_perl->Ilex_state;
8028 PL_lex_defer = proto_perl->Ilex_defer;
8029 PL_lex_expect = proto_perl->Ilex_expect;
8030 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8031 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8032 PL_lex_starts = proto_perl->Ilex_starts;
8033 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8034 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8035 PL_lex_op = proto_perl->Ilex_op;
8036 PL_lex_inpat = proto_perl->Ilex_inpat;
8037 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8038 PL_lex_brackets = proto_perl->Ilex_brackets;
8039 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8040 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8041 PL_lex_casemods = proto_perl->Ilex_casemods;
8042 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8043 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8044
8045 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8046 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8047 PL_nexttoke = proto_perl->Inexttoke;
8048
8049 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8050 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8051 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8052 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8053 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8054 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8055 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8056 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8057 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8058 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8059 PL_pending_ident = proto_perl->Ipending_ident;
8060 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8061
8062 PL_expect = proto_perl->Iexpect;
8063
8064 PL_multi_start = proto_perl->Imulti_start;
8065 PL_multi_end = proto_perl->Imulti_end;
8066 PL_multi_open = proto_perl->Imulti_open;
8067 PL_multi_close = proto_perl->Imulti_close;
8068
8069 PL_error_count = proto_perl->Ierror_count;
8070 PL_subline = proto_perl->Isubline;
8071 PL_subname = sv_dup_inc(proto_perl->Isubname);
8072
8073 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8074 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8075 PL_padix = proto_perl->Ipadix;
8076 PL_padix_floor = proto_perl->Ipadix_floor;
8077 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8078
8079 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8080 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8081 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8082 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8083 PL_last_lop_op = proto_perl->Ilast_lop_op;
8084 PL_in_my = proto_perl->Iin_my;
8085 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8086#ifdef FCRYPT
8087 PL_cryptseen = proto_perl->Icryptseen;
8088#endif
8089
8090 PL_hints = proto_perl->Ihints;
8091
8092 PL_amagic_generation = proto_perl->Iamagic_generation;
8093
8094#ifdef USE_LOCALE_COLLATE
8095 PL_collation_ix = proto_perl->Icollation_ix;
8096 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8097 PL_collation_standard = proto_perl->Icollation_standard;
8098 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8099 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8100#endif /* USE_LOCALE_COLLATE */
8101
8102#ifdef USE_LOCALE_NUMERIC
8103 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8104 PL_numeric_standard = proto_perl->Inumeric_standard;
8105 PL_numeric_local = proto_perl->Inumeric_local;
8106 PL_numeric_radix = proto_perl->Inumeric_radix;
8107#endif /* !USE_LOCALE_NUMERIC */
8108
8109 /* utf8 character classes */
8110 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8111 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8112 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8113 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8114 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8115 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8116 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8117 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8118 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8119 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8120 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8121 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8122 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8123 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8124 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8125 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8126 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8127
8128 /* swatch cache */
8129 PL_last_swash_hv = Nullhv; /* reinits on demand */
8130 PL_last_swash_klen = 0;
8131 PL_last_swash_key[0]= '\0';
8132 PL_last_swash_tmps = (U8*)NULL;
8133 PL_last_swash_slen = 0;
8134
8135 /* perly.c globals */
8136 PL_yydebug = proto_perl->Iyydebug;
8137 PL_yynerrs = proto_perl->Iyynerrs;
8138 PL_yyerrflag = proto_perl->Iyyerrflag;
8139 PL_yychar = proto_perl->Iyychar;
8140 PL_yyval = proto_perl->Iyyval;
8141 PL_yylval = proto_perl->Iyylval;
8142
8143 PL_glob_index = proto_perl->Iglob_index;
8144 PL_srand_called = proto_perl->Isrand_called;
8145 PL_uudmap['M'] = 0; /* reinits on demand */
8146 PL_bitcount = Nullch; /* reinits on demand */
8147
8148 if (proto_perl->Ipsig_ptr) {
8149 int sig_num[] = { SIG_NUM };
8150 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8151 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8152 for (i = 1; PL_sig_name[i]; i++) {
8153 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8154 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8155 }
8156 }
8157 else {
8158 PL_psig_ptr = (SV**)NULL;
8159 PL_psig_name = (SV**)NULL;
8160 }
8161
8162 /* thrdvar.h stuff */
8163
8164 if (flags & 1) {
8165 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8166 PL_tmps_ix = proto_perl->Ttmps_ix;
8167 PL_tmps_max = proto_perl->Ttmps_max;
8168 PL_tmps_floor = proto_perl->Ttmps_floor;
8169 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8170 i = 0;
8171 while (i <= PL_tmps_ix) {
8172 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8173 ++i;
8174 }
8175
8176 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8177 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8178 Newz(54, PL_markstack, i, I32);
8179 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8180 - proto_perl->Tmarkstack);
8181 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8182 - proto_perl->Tmarkstack);
8183 Copy(proto_perl->Tmarkstack, PL_markstack,
8184 PL_markstack_ptr - PL_markstack + 1, I32);
8185
8186 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8187 * NOTE: unlike the others! */
8188 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8189 PL_scopestack_max = proto_perl->Tscopestack_max;
8190 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8191 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8192
8193 /* next push_return() sets PL_retstack[PL_retstack_ix]
8194 * NOTE: unlike the others! */
8195 PL_retstack_ix = proto_perl->Tretstack_ix;
8196 PL_retstack_max = proto_perl->Tretstack_max;
8197 Newz(54, PL_retstack, PL_retstack_max, OP*);
8198 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8199
8200 /* NOTE: si_dup() looks at PL_markstack */
8201 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8202
8203 /* PL_curstack = PL_curstackinfo->si_stack; */
8204 PL_curstack = av_dup(proto_perl->Tcurstack);
8205 PL_mainstack = av_dup(proto_perl->Tmainstack);
8206
8207 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8208 PL_stack_base = AvARRAY(PL_curstack);
8209 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8210 - proto_perl->Tstack_base);
8211 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8212
8213 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8214 * NOTE: unlike the others! */
8215 PL_savestack_ix = proto_perl->Tsavestack_ix;
8216 PL_savestack_max = proto_perl->Tsavestack_max;
8217 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8218 PL_savestack = ss_dup(proto_perl);
8219 }
8220 else {
8221 init_stacks();
985e7056 8222 ENTER; /* perl_destruct() wants to LEAVE; */
1d7c1841
GS		 8223 }
8224
8225 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8226 PL_top_env = &PL_start_env;
8227
8228 PL_op = proto_perl->Top;
8229
8230 PL_Sv = Nullsv;
8231 PL_Xpv = (XPV*)NULL;
8232 PL_na = proto_perl->Tna;
8233
8234 PL_statbuf = proto_perl->Tstatbuf;
8235 PL_statcache = proto_perl->Tstatcache;
8236 PL_statgv = gv_dup(proto_perl->Tstatgv);
8237 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8238#ifdef HAS_TIMES
8239 PL_timesbuf = proto_perl->Ttimesbuf;
8240#endif
8241
8242 PL_tainted = proto_perl->Ttainted;
8243 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8244 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8245 PL_rs = sv_dup_inc(proto_perl->Trs);
8246 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8247 PL_ofslen = proto_perl->Tofslen;
8248 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8249 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8250 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8251 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8252 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8253 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8254
8255 PL_restartop = proto_perl->Trestartop;
8256 PL_in_eval = proto_perl->Tin_eval;
8257 PL_delaymagic = proto_perl->Tdelaymagic;
8258 PL_dirty = proto_perl->Tdirty;
8259 PL_localizing = proto_perl->Tlocalizing;
8260
14dd3ad8 8261#ifdef PERL_FLEXIBLE_EXCEPTIONS
1d7c1841 8262 PL_protect = proto_perl->Tprotect;
14dd3ad8 8263#endif
1d7c1841
GS		 8264 PL_errors = sv_dup_inc(proto_perl->Terrors);
8265 PL_av_fetch_sv = Nullsv;
8266 PL_hv_fetch_sv = Nullsv;
8267 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8268 PL_modcount = proto_perl->Tmodcount;
8269 PL_lastgotoprobe = Nullop;
8270 PL_dumpindent = proto_perl->Tdumpindent;
8271
8272 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8273 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8274 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8275 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8276 PL_sortcxix = proto_perl->Tsortcxix;
8277 PL_efloatbuf = Nullch; /* reinits on demand */
8278 PL_efloatsize = 0; /* reinits on demand */
8279
8280 /* regex stuff */
8281
8282 PL_screamfirst = NULL;
8283 PL_screamnext = NULL;
8284 PL_maxscream = -1; /* reinits on demand */
8285 PL_lastscream = Nullsv;
8286
8287 PL_watchaddr = NULL;
8288 PL_watchok = Nullch;
8289
8290 PL_regdummy = proto_perl->Tregdummy;
8291 PL_regcomp_parse = Nullch;
8292 PL_regxend = Nullch;
8293 PL_regcode = (regnode*)NULL;
8294 PL_regnaughty = 0;
8295 PL_regsawback = 0;
8296 PL_regprecomp = Nullch;
8297 PL_regnpar = 0;
8298 PL_regsize = 0;
8299 PL_regflags = 0;
8300 PL_regseen = 0;
8301 PL_seen_zerolen = 0;
8302 PL_seen_evals = 0;
8303 PL_regcomp_rx = (regexp*)NULL;
8304 PL_extralen = 0;
8305 PL_colorset = 0; /* reinits PL_colors[] */
8306 /*PL_colors[6] = {0,0,0,0,0,0};*/
8307 PL_reg_whilem_seen = 0;
8308 PL_reginput = Nullch;
8309 PL_regbol = Nullch;
8310 PL_regeol = Nullch;
8311 PL_regstartp = (I32*)NULL;
8312 PL_regendp = (I32*)NULL;
8313 PL_reglastparen = (U32*)NULL;
8314 PL_regtill = Nullch;
8315 PL_regprev = '\n';
8316 PL_reg_start_tmp = (char**)NULL;
8317 PL_reg_start_tmpl = 0;
8318 PL_regdata = (struct reg_data*)NULL;
8319 PL_bostr = Nullch;
8320 PL_reg_flags = 0;
8321 PL_reg_eval_set = 0;
8322 PL_regnarrate = 0;
8323 PL_regprogram = (regnode*)NULL;
8324 PL_regindent = 0;
8325 PL_regcc = (CURCUR*)NULL;
8326 PL_reg_call_cc = (struct re_cc_state*)NULL;
8327 PL_reg_re = (regexp*)NULL;
8328 PL_reg_ganch = Nullch;
8329 PL_reg_sv = Nullsv;
8330 PL_reg_magic = (MAGIC*)NULL;
8331 PL_reg_oldpos = 0;
8332 PL_reg_oldcurpm = (PMOP*)NULL;
8333 PL_reg_curpm = (PMOP*)NULL;
8334 PL_reg_oldsaved = Nullch;
8335 PL_reg_oldsavedlen = 0;
8336 PL_reg_maxiter = 0;
8337 PL_reg_leftiter = 0;
8338 PL_reg_poscache = Nullch;
8339 PL_reg_poscache_size= 0;
8340
8341 /* RE engine - function pointers */
8342 PL_regcompp = proto_perl->Tregcompp;
8343 PL_regexecp = proto_perl->Tregexecp;
8344 PL_regint_start = proto_perl->Tregint_start;
8345 PL_regint_string = proto_perl->Tregint_string;
8346 PL_regfree = proto_perl->Tregfree;
8347
8348 PL_reginterp_cnt = 0;
8349 PL_reg_starttry = 0;
8350
8351#ifdef PERL_OBJECT
8352 return (PerlInterpreter*)pPerl;
8353#else
8354 return my_perl;
8355#endif
8356}
8357
8358#else /* !USE_ITHREADS */
51371543
GS		 8359
8360#ifdef PERL_OBJECT
51371543
GS		 8361#include "XSUB.h"
8362#endif
8363
1d7c1841
GS		 8364#endif /* USE_ITHREADS */
8365
51371543
GS		 8366static void
8367do_report_used(pTHXo_ SV *sv)
8368{
8369 if (SvTYPE(sv) != SVTYPEMASK) {
bf49b057 8370 PerlIO_printf(Perl_debug_log, "****\n");
51371543
GS		 8371 sv_dump(sv);
8372 }
8373}
8374
8375static void
8376do_clean_objs(pTHXo_ SV *sv)
8377{
8378 SV* rv;
8379
8380 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8381 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8b6e653b
HS		 8382 if (SvWEAKREF(sv)) {
8383 sv_del_backref(sv);
8384 SvWEAKREF_off(sv);
8385 SvRV(sv) = 0;
8386 } else {
8387 SvROK_off(sv);
8388 SvRV(sv) = 0;
8389 SvREFCNT_dec(rv);
8390 }
51371543
GS		 8391 }
8392
8393 /* XXX Might want to check arrays, etc. */
8394}
8395
8396#ifndef DISABLE_DESTRUCTOR_KLUDGE
8397static void
8398do_clean_named_objs(pTHXo_ SV *sv)
8399{
f472eb5c 8400 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
51371543 8401 if ( SvOBJECT(GvSV(sv)) ||
155aba94
GS		 8402 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8403 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8404 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8405 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
51371543
GS		 8406 {
8407 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8408 SvREFCNT_dec(sv);
8409 }
8410 }
8411}
8412#endif
8413
8414static void
8415do_clean_all(pTHXo_ SV *sv)
8416{
1d7c1841 8417 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
51371543
GS		 8418 SvFLAGS(sv) |= SVf_BREAK;
8419 SvREFCNT_dec(sv);
8420}
8af02333 8421
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