ref: e06ce64d6557512a21c46a2dfa864f2e9a08f70b
dir: /tests/cc/execute/0047-anonexport.c/
typedef struct { int a; union { int b1; int b2; }; struct { union { struct { int c; }; struct {}; }; }; struct {}; struct { int d; }; } s; int main() { s v; v.a = 1; v.b1 = 2; v.c = 3; v.d = 4; if (v.a != 1) return 1; if (v.b1 != 2 && v.b2 != 2) return 2; if (v.c != 3) return 3; if (v.d != 4) return 4; return 0; }