| // Copyright (C) 2016-2025 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-options "-D_GLIBCXX_DEBUG" } |
| // { dg-do link { target c++11 } } |
| // { dg-skip-if "" { *-*-* } { "-D_GLIBCXX_PARALLEL" } } |
| |
| #include <algorithm> |
| |
| struct X { }; |
| |
| bool operator<(X, int) { return true; } |
| bool operator<(int, X) { return false; } |
| |
| bool operator<(X, X); // undefined (PR libstdc++/71545) |
| |
| int main() |
| { |
| X x[1]; |
| int i[1]; |
| std::lexicographical_compare(x, x+1, i, i+1); |
| // { dg-warning "ignoring return value" "" { target c++11 } 35 } |
| } |
