ref: 5cee3c5e3fdc511a468879104c08a1aa0e8c2b0f dir: /tests/cc/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; }