1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <memory> 11 12// template<class T> class weak_ptr 13// { 14// public: 15// typedef T element_type; 16// ... 17// }; 18 19#include <memory> 20 21struct A; // purposefully incomplete 22 23int main() 24{ 25 static_assert((std::is_same<std::weak_ptr<A>::element_type, A>::value), ""); 26} 27