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// PR c++/54506 // { dg-do compile { target c++11 } } template <class T> struct A { A() {} A(A const volatile &&) = delete; A &operator =(A const volatile &&) = delete; template <class U> A(A<U> &&) {} template <class U> A &operator =(A<U> &&) { return *this; } }; struct B { A<int> a; B() = default; }; int main() { B b = B(); b = B(); }