{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"//"}]}
                // FIXME: https://github.com/rust-lang/rust/pull/144232#discussion_r2218543841
            if kind == CallKind::Tail && matches!(fn_abi.args[i].mode, PassMode::Indirect { .. }) {
                span_bug!(