1 // PR c++/85662 2 // { dg-do compile { target c++11 } } 3 4 struct S { unsigned long x[31]; }; 5 struct T { bool b; S f; }; 6 static_assert (__builtin_offsetof (T, f.x[31 - 1]) == __builtin_offsetof (T, f.x[30]), ""); 7