[gcc r13-2383] libstdc++: Consistently use ::type when deriving from __and/or/not_

[Patrick Palka <ppalka@gcc.gnu.org>]

https://gcc.gnu.org/g:68c23af0dd7403c95c43310edc15669d4dacb005

commit r13-2383-g68c23af0dd7403c95c43310edc15669d4dacb005
Author: Patrick Palka <ppalka@redhat.com>
Date:   Fri Sep 2 15:16:37 2022 -0400

    libstdc++: Consistently use ::type when deriving from __and/or/not_
    
    Now that these internal type traits are (again) class templates, it's
    better to derive from the trait's ::type instead of from the trait
    itself, for sake of a shallower inheritance chain.
    
    libstdc++-v3/ChangeLog:
    
            * include/std/tuple (tuple::_UseOtherCtor): Use ::type when
            deriving from __and_, __or_ or __not_.
            * include/std/type_traits (negation): Likewise.
            (is_unsigned): Likewise.
            (__is_implicitly_default_constructible): Likewise.
            (is_trivially_destructible): Likewise.
            (__is_nt_invocable_impl): Likewise.

Diff:
---
 libstdc++-v3/include/std/tuple       |  2 +-
 libstdc++-v3/include/std/type_traits | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/libstdc++-v3/include/std/tuple b/libstdc++-v3/include/std/tuple
index ddd7c226d80..26e248431ec 100644
--- a/libstdc++-v3/include/std/tuple
+++ b/libstdc++-v3/include/std/tuple
@@ -826,7 +826,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       // then TUPLE should match tuple(UTypes&&...) instead.
       template<typename _Tuple, typename _Tp, typename _Up>
 	struct _UseOtherCtor<_Tuple, tuple<_Tp>, tuple<_Up>>
-	: __or_<is_convertible<_Tuple, _Tp>, is_constructible<_Tp, _Tuple>>
+	: __or_<is_convertible<_Tuple, _Tp>, is_constructible<_Tp, _Tuple>>::type
 	{ };
       // If TUPLE and *this each have a single element of the same type,
       // then TUPLE should match a copy/move constructor instead.
diff --git a/libstdc++-v3/include/std/type_traits b/libstdc++-v3/include/std/type_traits
index 2f5fe80b98a..c7a96079ebf 100644
--- a/libstdc++-v3/include/std/type_traits
+++ b/libstdc++-v3/include/std/type_traits
@@ -235,7 +235,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
   template<typename _Pp>
     struct negation
-    : __not_<_Pp>
+    : __not_<_Pp>::type
     { };
 
   /** @ingroup variable_templates
@@ -845,7 +845,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   /// is_unsigned
   template<typename _Tp>
     struct is_unsigned
-    : public __and_<is_arithmetic<_Tp>, __not_<is_signed<_Tp>>>
+    : public __and_<is_arithmetic<_Tp>, __not_<is_signed<_Tp>>>::type
     { };
 
   /// @cond undocumented
@@ -1222,7 +1222,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   template <typename _Tp>
     struct __is_implicitly_default_constructible
     : public __and_<__is_constructible_impl<_Tp>,
-		    __is_implicitly_default_constructible_safe<_Tp>>
+		    __is_implicitly_default_constructible_safe<_Tp>>::type
     { };
 
   /// is_trivially_copy_constructible
@@ -1282,7 +1282,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
   template<typename _Tp>
     struct is_trivially_destructible
     : public __and_<__is_destructible_safe<_Tp>,
-		    __bool_constant<__has_trivial_destructor(_Tp)>>
+		    __bool_constant<__has_trivial_destructor(_Tp)>>::type
     {
       static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}),
 	"template argument must be a complete class or an unbounded array");
@@ -2975,7 +2975,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     struct __is_nt_invocable_impl<_Result, _Ret,
 				  __void_t<typename _Result::type>>
     : __or_<is_void<_Ret>,
-	    __is_nothrow_convertible<typename _Result::type, _Ret>>
+	    __is_nothrow_convertible<typename _Result::type, _Ret>>::type
     { };
   /// @endcond