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