{"ast_node_type":"other","tokens":[{"end":95,"kind":"keyword","start":0,"text":"val.layout.ty.builtin_deref(true).expect(\"`ref_to_mplace`"}]}
            val.layout.ty.builtin_deref(true).expect("`ref_to_mplace` called on non-ptr type");
        let pointee_type =
        let layout = self.layout_of(pointee_type)?;