ref: 4cd120c00e9285d5900c7e5a568f82ba6413cb7e dir: /tests/cc/execute/0054-struct.c/
int main() { struct T { int x; } s1; s1.x = 1; { struct T { int y; } s2; s2.y = 1; if (s1.x - s2.y != 0) return 1; } return 0; }