1*83bc7b57SNikolas Klauser //===----------------------------------------------------------------------===// 2*83bc7b57SNikolas Klauser // 3*83bc7b57SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*83bc7b57SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information. 5*83bc7b57SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*83bc7b57SNikolas Klauser // 7*83bc7b57SNikolas Klauser //===----------------------------------------------------------------------===// 8*83bc7b57SNikolas Klauser 9*83bc7b57SNikolas Klauser // UNSUPPORTED: c++03 10*83bc7b57SNikolas Klauser 11*83bc7b57SNikolas Klauser // check that <set> functions are marked [[nodiscard]] 12*83bc7b57SNikolas Klauser 13*83bc7b57SNikolas Klauser #include <set> 14*83bc7b57SNikolas Klauser set_test()15*83bc7b57SNikolas Klauservoid set_test() { 16*83bc7b57SNikolas Klauser std::set<int> set; 17*83bc7b57SNikolas Klauser set.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 18*83bc7b57SNikolas Klauser } 19*83bc7b57SNikolas Klauser multiset_test()20*83bc7b57SNikolas Klauservoid multiset_test() { 21*83bc7b57SNikolas Klauser std::multiset<int> multiset; 22*83bc7b57SNikolas Klauser multiset.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' attribute}} 23*83bc7b57SNikolas Klauser } 24