ref: c35217a1a61f795d312eede2f84faf59c7c06a3c dir: /tests/execute/0056-enum.c/
enum E { x, y = 2, z, }; int main() { enum E e; if(x != 0) return 1; if(y != 2) return 2; if(z != 3) return 3; e = x; return e; }