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 // <functional> 11 12 // placeholders 13 14 #include <functional> 15 #include <type_traits> 16 17 template <class T> 18 void 19 test(const T& t) 20 { 21 // Test default constructible. 22 T t2; 23 ((void)t2); 24 // Test copy constructible. 25 T t3 = t; 26 ((void)t3); 27 static_assert(std::is_nothrow_copy_constructible<T>::value, ""); 28 static_assert(std::is_nothrow_move_constructible<T>::value, ""); 29 } 30 31 int main() 32 { 33 test(std::placeholders::_1); 34 test(std::placeholders::_2); 35 test(std::placeholders::_3); 36 test(std::placeholders::_4); 37 test(std::placeholders::_5); 38 test(std::placeholders::_6); 39 test(std::placeholders::_7); 40 test(std::placeholders::_8); 41 test(std::placeholders::_9); 42 test(std::placeholders::_10); 43 } 44
