1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is dual licensed under the MIT and the University of Illinois Open 7 // Source Licenses. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 11 // <map> 12 13 // class map 14 15 // bool empty() const noexcept; 16 17 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 18 // UNSUPPORTED: clang-3.3, clang-3.4, clang-3.5, clang-3.6, clang-3.7, clang-3.8 19 20 #include <map> 21 22 #include "test_macros.h" 23 24 int main () 25 { 26 std::map<int, int> c; 27 c.empty(); // expected-error {{ignoring return value of function declared with 'nodiscard' attribute}} 28 } 29
