#ifdef DEBUGGING
const U8 *real_start;
#endif
+ STRLEN max_delta;
PERL_ARGS_ASSERT_SV_CHOP;
/* Nothing to do. */
return;
}
- assert(ptr > SvPVX_const(sv));
+ /* SvPVX(sv) may move in SV_CHECK_THINKFIRST(sv), but after this line,
+ nothing uses the value of ptr any more. */
+ max_delta = SvLEN(sv) ? SvLEN(sv) : SvCUR(sv);
+ if (ptr <= SvPVX_const(sv))
+ Perl_croak(aTHX_ "panic: sv_chop ptr=%p, start=%p, end=%p",
+ ptr, SvPVX_const(sv), SvPVX_const(sv) + max_delta);
SV_CHECK_THINKFIRST(sv);
+ if (delta > max_delta)
+ Perl_croak(aTHX_ "panic: sv_chop ptr=%p (was %p), start=%p, end=%p",
+ SvPVX_const(sv) + delta, ptr, SvPVX_const(sv),
+ SvPVX_const(sv) + max_delta);
if (!SvOOK(sv)) {
if (!SvLEN(sv)) { /* make copy of shared string */
daux->xhv_eiter = saux->xhv_eiter
? he_dup(saux->xhv_eiter,
(bool)!!HvSHAREKEYS(sstr), param) : 0;
+ /* backref array needs refcnt=2; see sv_add_backref */
daux->xhv_backreferences =
saux->xhv_backreferences
? (AV*) SvREFCNT_inc(
- sv_dup((SV*)saux->xhv_backreferences, param))
+ sv_dup_inc((SV*)saux->xhv_backreferences, param))
: 0;
daux->xhv_mro_meta = saux->xhv_mro_meta