2 // { dg-do compile { target c++11 } }
3 // { dg-options "-Wuninitialized" }
4 // Anonymous union/struct.
5 // ??? The diagnostic should be improved to say 'b' instead of
13 S() : a(b) { } // { dg-warning "is used uninitialized" }
21 U() : a(b) { } // { dg-warning "is used uninitialized" }