ref: 5c7b4991a1e90baab76969d4778e8780e43d1239 dir: /tests/cc/execute/0055-enum.c/
enum E { x, y, z, }; int main() { enum E e; if(x != 0) return 1; if(y != 1) return 2; if(z != 2) return 3; e = x; return e; }