{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"query"}]}
    query check_tail_calls(key: LocalDefId) -> Result<(), rustc_errors::ErrorGuaranteed> {
    /// Checks well-formedness of tail calls (`become f()`).
        desc { |tcx| "tail-call-checking `{}`", tcx.def_path_str(key) }