libstdc++-v3/testsuite/tr1/3_function_objects/bind/cv_quals.cc

   1 // Copyright (C) 2011 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-do compile }
  19 // { dg-options "-std=gnu++0x" }
  20
  21 #include <tr1/functional>
  22
  23 struct X
  24 {
  25   int operator()() const { return 0; }
  26   int operator()() volatile { return 1; }
  27   int operator()() const volatile { return 2; }
  28   void operator()() { };
  29 };
  30
  31 void test01()
  32 {
  33   static_assert( std::tr1::is_placeholder<__typeof(std::tr1::placeholders::_1)>::value,
  34                  "decltype(_1) is a placeholder type" );
  35
  36   const auto b0 = std::tr1::bind(X());
  37   static_assert( std::tr1::is_bind_expression<__typeof(b0)>::value,
  38                  "const-qualified wrapper is a bind expression" );
  39
  40   volatile auto b1 = std::tr1::bind(X());
  41   static_assert( std::tr1::is_bind_expression<__typeof(b1)>::value,
  42                  "volatile-qualified wrapper is a bind expression" );
  43
  44   const volatile auto b2 = std::tr1::bind(X());
  45   static_assert( std::tr1::is_bind_expression<__typeof(b2)>::value,
  46                  "const-volatile-qualified wrapper is a bind expression" );
  47 }
  48
  49 int main()
  50 {
  51   test01();
  52   return 0;
  53 }