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

   1 // { dg-do run { target c++11 } }
   2 // Copyright (C) 2009-2018 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   typedef int result_type;
  27   int operator()(int i) const { return i+1; }
  28   bool b;
  29 };
  30
  31 void test01()
  32 {
  33   using std::bind;
  34   using std::ref;
  35   ::X x = { true };
  36
  37   // test bind<R> form
  38   bind<void>(ref(x), 1)();
  39   VERIFY( bind<long>(ref(x), 1)() == 2 );
  40   bind<void>(&::X::b, ref(x))();
  41   VERIFY( bind<int>(&::X::b, ref(x))() == 1 );
  42 }
  43
  44 int main()
  45 {
  46   test01();
  47   return 0;
  48 }