OS X. This all feels like voodoo.
p4raw-id: //depot/perl@24879
$sv->ROK ?
$sv->B::RV::bsave($ix):
$sv->B::NULL::bsave($ix);
+ # See note below in B::PVNV::bsave
+ return if $sv->isa('B::AV');
+ return if $sv->isa('B::HV');
asm "xiv", !ITHREADS && $sv->FLAGS & (SVf_FAKE|SVf_READONLY) ?
"0 but true" : $sv->IVX;
}