extern int global; /* OUTPUT: { "types": [], "functions": [], "variables": [{ "id": 0, "usr": "c:@global", "short_name": "global", "qualified_name": "global", "declaration": "tests/vars/global_variable_decl_only.cc:1:12", "all_uses": ["tests/vars/global_variable_decl_only.cc:1:12"] }] } */