This patch uses __bool_constant entirely instead of integral_constant<bool>
in the type_traits header, specifically for true_type, false_type,
and bool_constant.
libstdc++-v3/ChangeLog:
* include/std/type_traits (true_type): Use __bool_constant
instead.
(false_type): Likewise.
(bool_constant): Likewise.
Signed-off-by: Ken Matsui <kmat...@gcc.gnu.org>
---
libstdc++-v3/include/std/type_traits | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/libstdc++-v3/include/std/type_traits
b/libstdc++-v3/include/std/type_traits
index 9f086992ebc..7dc5791a7c5 100644
--- a/libstdc++-v3/include/std/type_traits
+++ b/libstdc++-v3/include/std/type_traits
@@ -78,24 +78,24 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
constexpr _Tp integral_constant<_Tp, __v>::value;
#endif
- /// The type used as a compile-time boolean with true value.
- using true_type = integral_constant<bool, true>;
-
- /// The type used as a compile-time boolean with false value.
- using false_type = integral_constant<bool, false>;
-
/// @cond undocumented
/// bool_constant for C++11
template<bool __v>
using __bool_constant = integral_constant<bool, __v>;
/// @endcond
+ /// The type used as a compile-time boolean with true value.
+ using true_type = __bool_constant<true>;
+
+ /// The type used as a compile-time boolean with false value.
+ using false_type = __bool_constant<false>;
+
#if __cplusplus >= 201703L
# define __cpp_lib_bool_constant 201505L
/// Alias template for compile-time boolean constant types.
/// @since C++17
template<bool __v>
- using bool_constant = integral_constant<bool, __v>;
+ using bool_constant = __bool_constant<__v>;
#endif
// Metaprogramming helper types.
--
2.41.0
