{"ast_node_type":"other","tokens":[{"end":88,"kind":"keyword","start":0,"text":"//"}]}
        // compiler-builtins. Most linkers silently ignore it, but ld64 gives a warning.
        // from any cdylib. The latter doesn't work anyway as we use hidden visibility for
        if info.level.is_below_threshold(export_threshold) && !tcx.is_compiler_builtins(cnum) {