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 24int main () 25{ 26 std::map<int, int> c; 27 c.empty(); // expected-error {{ignoring return value of function declared with 'nodiscard' attribute}} 28} 29