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* [gcc r14-3174] libstdc++: Use __bool_constant entirely
@ 2023-08-12 0:55 Ken Matsui
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From: Ken Matsui @ 2023-08-12 0:55 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:066c260ad09dde95f43e503f7242b011d17a10f6
commit r14-3174-g066c260ad09dde95f43e503f7242b011d17a10f6
Author: Ken Matsui <kmatsui@gcc.gnu.org>
Date: Fri Jul 14 19:55:35 2023 -0700
libstdc++: Use __bool_constant entirely
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 <kmatsui@gcc.gnu.org>
Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
Diff:
---
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 9f086992ebcc..7dc5791a7c5e 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.
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