#ifndef FOO #define FOO #endif /* OUTPUT: { "vars": [{ "id": 0, "usr": "c:include_guard.cc@21@macro@FOO", "short_name": "FOO", "detailed_name": "FOO", "definition_spelling": "2:9-2:12", "definition_extent": "2:9-2:12", "is_local": false, "is_macro": true, "uses": ["2:9-2:12"] }] } */