libstdc++-v3/testsuite/25_algorithms/lower_bound/debug/irreflexive.cc

   1 // Copyright (C) 2015-2016 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8 //
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17 //
  18 // { dg-require-debug-mode "" }
  19 // { dg-do compile }
  20
  21 #include <algorithm>
  22
  23 struct A
  24 {
  25   A(int i) : _i(i)
  26   { }
  27
  28   int _i;
  29 };
  30
  31 // Only knowns how to compare an A with an int.
  32 struct A_int_comparer
  33 {
  34   bool
  35   operator()(A a, int i) const
  36   { return a._i < i; }
  37
  38   bool
  39   operator()(int i, A a) const
  40   { return i < a._i; }
  41 };
  42
  43 void test01()
  44 {
  45   A as[] { 0, 1, 2, 3 };
  46   std::lower_bound(as, as + 4, 1, A_int_comparer());
  47 }