libstdc++-v3/testsuite/20_util/hash/operators/size_t.cc

   1 // { dg-do run { target c++11 } }
   2 // 2007-08-20  <benjamin@redhat.com>
   3 //
   4 // Copyright (C) 2007-2017 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 3, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING3.  If not see
  19 // <http://www.gnu.org/licenses/>.
  20
  21 #include <functional>
  22 #include <system_error>
  23 #include <testsuite_hooks.h>
  24
  25 template<typename T>
  26   void
  27   do_test()
  28   {
  29     typedef T                           value_type;
  30     typedef std::hash<value_type>       hash_type;
  31     using std::size_t;
  32
  33     value_type v; // default initialized is fine, same value all that matters.
  34     hash_type h1;
  35     size_t r1 = size_t(h1(v));
  36
  37     hash_type h2;
  38     size_t r2 = size_t(h2(v));
  39
  40     VERIFY( r1 == r2 );
  41   }
  42
  43 void test01()
  44 {
  45   do_test<std::error_code>();
  46 #if __cplusplus > 201402L
  47   do_test<std::error_condition>();
  48 #endif
  49 }
  50
  51 int main()
  52 {
  53   test01();
  54   return 0;
  55 }