ref: 0cc8cbda0c7ac4ea844f0c2559e4c4fb90b7efaa dir: /tests/execute/0045-struct.c/
struct T; struct T { int x; }; int main() { struct T v; { struct T { int z; }; } v.x = 2; if(v.x != 2) return 1; return 0; }