1 files changed, 32 insertions, 0 deletions
diff --git a/gdb/gdbsupport/underlying.h b/gdb/gdbsupport/underlying.h
new file mode 100644
index 00000000000..af14a3627d5
--- /dev/null
+++ b/gdb/gdbsupport/underlying.h
@@ -0,0 +1,32 @@
+/* Copyright (C) 2017-2019 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef COMMON_UNDERLYING_H
+#define COMMON_UNDERLYING_H
+
+#include <type_traits>
+
+/* Convert an enum to its underlying value.  */
+
+template<typename E>
+constexpr typename std::underlying_type<E>::type
+to_underlying (E val) noexcept
+{
+  return static_cast<typename std::underlying_type<E>::type> (val);
+}
+
+#endif