Function rustc_typeck::check::binding_opaque_type_cycle_error

pub(in check) fn binding_opaque_type_cycle_error<'tcx>(
    tcx: TyCtxt<'tcx>, 
    def_id: LocalDefId, 
    span: Span, 
    partially_expanded_type: Ty<'tcx>
)

Emit an error for recursive opaque types in a let binding.