{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"sess.dcx().emit_err(errors::NegativeBoundUnsupported"}]}
            sess.dcx().emit_err(errors::NegativeBoundUnsupported { span });
        for &span in spans.get(&sym::negative_bounds).iter().copied().flatten() {
        }