1 struct A 2 { 3 void* q; 4 short i; 5 }; 6 7 union U 8 { 9 char* p; 10 struct A a; 11 }; 12 foo(union U u)13 struct A foo(union U u) 14 { 15 struct A a = { 0, 0 }; 16 a = u.a; 17 return a; 18 } 19