libstdc++-v3/testsuite/20_util/underlying_type/requirements/explicit_instantiation.cc

   1 // { dg-do compile { target c++11 } }
   2
   3 // Copyright (C) 2011-2021 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 3, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING3.  If not see
  18 // <http://www.gnu.org/licenses/>.
  19
  20 // NB: This file is for testing type_traits with NO OTHER INCLUDES.
  21
  22 #include <type_traits>
  23
  24 namespace std
  25 {
  26   typedef enum E1 : unsigned { }                     test_type1;
  27   typedef enum E2 : char { }                         test_type2;
  28   typedef enum class E3 { }                          test_type3;
  29   typedef enum class E4 : unsigned char { c = 1 }    test_type4;
  30   typedef enum class E5 : int { a = -1, b = 1 }      test_type5;
  31   typedef enum class E6 : long { c = __LONG_MAX__ }  test_type6;
  32
  33   template struct underlying_type<test_type1>;
  34   template struct underlying_type<test_type2>;
  35   template struct underlying_type<test_type3>;
  36   template struct underlying_type<test_type4>;
  37   template struct underlying_type<test_type5>;
  38   template struct underlying_type<test_type6>;
  39 }