libstdc++-v3/testsuite/20_util/bind/ref.cc

   1 // { dg-do run { target c++11 } }
   2 // Copyright (C) 2009-2017 Free Software Foundation, Inc.
   3 //
   4 // This file is part of the GNU ISO C++ Library.  This library is free
   5 // software; you can redistribute it and/or modify it under the
   6 // terms of the GNU General Public License as published by the
   7 // Free Software Foundation; either version 3, or (at your option)
   8 // any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this library; see the file COPYING3.  If not see
  17 // <http://www.gnu.org/licenses/>.
  18
  19 // 20.7.11 Function template bind
  20
  21 #include <functional>
  22 #include <testsuite_hooks.h>
  23
  24 struct X
  25 {
  26   X() : bar(17) {}
  27
  28   int foo(int x, int y) { return bar + x + y; }
  29
  30   int bar;
  31
  32 private:
  33   X(const X&);
  34   X& operator=(const X&);
  35 };
  36
  37 // Operations on empty function<> objects
  38 void test01()
  39 {
  40   using std::bind;
  41   using std::ref;
  42   ::X x;
  43
  44   VERIFY( bind(&::X::foo, ref(x), 1, 2)() == 20 );
  45   VERIFY( bind<int>(&::X::foo, ref(x), 1, 2)() == 20 );
  46   VERIFY( bind(&::X::bar, ref(x))() == 17 );
  47   VERIFY( bind<int>(&::X::bar, ref(x))() == 17 );
  48 }
  49
  50 int main()
  51 {
  52   test01();
  53   return 0;
  54 }