- SvCUR(dstr) = SvCUR(sstr);
- SvLEN(dstr) = SvLEN(sstr);
- SvIVX(dstr) = SvIVX(sstr);
- SvNVX(dstr) = SvNVX(sstr);
- SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr), param);
- SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr), param);
- HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
- if (HvARRAY((HV*)sstr)) {
- STRLEN i = 0;
- XPVHV *dxhv = (XPVHV*)SvANY(dstr);
- XPVHV *sxhv = (XPVHV*)SvANY(sstr);
- Newz(0, dxhv->xhv_array,
- PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
- while (i <= sxhv->xhv_max) {
- ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
- (bool)!!HvSHAREKEYS(sstr),
- param);
- ++i;
+ SvCUR_set(dstr, SvCUR(sstr));
+ SvLEN_set(dstr, SvLEN(sstr));
+ HvTOTALKEYS(dstr) = HvTOTALKEYS(sstr);
+ SvMAGIC_set(dstr, mg_dup(SvMAGIC(sstr), param));
+ SvSTASH_set(dstr, hv_dup_inc(SvSTASH(sstr), param));
+ {
+ HEK *hvname = 0;
+
+ if (HvARRAY((HV*)sstr)) {
+ STRLEN i = 0;
+ const bool sharekeys = !!HvSHAREKEYS(sstr);
+ XPVHV * const dxhv = (XPVHV*)SvANY(dstr);
+ XPVHV * const sxhv = (XPVHV*)SvANY(sstr);
+ char *darray;
+ New(0, darray,
+ PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1)
+ + (SvOOK(sstr) ? sizeof(struct xpvhv_aux) : 0), char);
+ HvARRAY(dstr) = (HE**)darray;
+ while (i <= sxhv->xhv_max) {
+ HE *source = HvARRAY(sstr)[i];
+ HvARRAY(dstr)[i]
+ = source ? he_dup(source, sharekeys, param) : 0;
+ ++i;
+ }
+ if (SvOOK(sstr)) {
+ struct xpvhv_aux *saux = HvAUX(sstr);
+ struct xpvhv_aux *daux = HvAUX(dstr);
+ /* This flag isn't copied. */
+ /* SvOOK_on(hv) attacks the IV flags. */
+ SvFLAGS(dstr) |= SVf_OOK;
+
+ hvname = saux->xhv_name;
+ daux->xhv_name = hvname ? hek_dup(hvname, param) : hvname;
+
+ daux->xhv_riter = saux->xhv_riter;
+ daux->xhv_eiter = saux->xhv_eiter
+ ? he_dup(saux->xhv_eiter, (bool)!!HvSHAREKEYS(sstr),
+ param) : 0;
+ }