libstdc++-v3/testsuite/25_algorithms/merge/check_type.cc

   1 // Copyright (C) 2005 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 2, 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 COPYING.  If not, write to the Free
  16 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17 // USA.
  18
  19 // 25.3.4 [lib.alg.merge]
  20
  21 // { dg-do compile }
  22
  23 #include <algorithm>
  24 #include <testsuite_iterators.h>
  25 using __gnu_test::input_iterator_wrapper;
  26 using __gnu_test::output_iterator_wrapper;
  27
  28 struct S { };
  29
  30 bool
  31 operator<(const S&, const S&) {return true;}
  32
  33 struct X { };
  34
  35 bool
  36 predicate(const X&, const X&) {return true;}
  37
  38 output_iterator_wrapper<S>
  39 test1(input_iterator_wrapper<S>& in,
  40       output_iterator_wrapper<S>& out)
  41 { return std::merge(in, in, in, in, out); }
  42
  43 output_iterator_wrapper<X>
  44 test2(input_iterator_wrapper<X>& in,
  45       output_iterator_wrapper<X>& out)
  46 { return std::merge(in, in, in, in, out, predicate); }