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 // UNSUPPORTED: libcpp-has-no-threads 11 12 // <thread> 13 14 // template <class T> 15 // struct hash 16 // : public unary_function<T, size_t> 17 // { 18 // size_t operator()(T val) const; 19 // }; 20 21 // Not very portable 22 23 #include <thread> 24 #include <cassert> 25 26 #include "test_macros.h" 27 main()28int main() 29 { 30 std::thread::id id1; 31 std::thread::id id2 = std::this_thread::get_id(); 32 typedef std::hash<std::thread::id> H; 33 static_assert((std::is_same<typename H::argument_type, std::thread::id>::value), "" ); 34 static_assert((std::is_same<typename H::result_type, std::size_t>::value), "" ); 35 ASSERT_NOEXCEPT(H()(id2)); 36 H h; 37 assert(h(id1) != h(id2)); 38 } 39