Tested x86_64-linux.
Pushed to trunk. Backports to follow after the 14.2 release.
-- >8 --
This questionable combination of flags causes a number of errors. This
one in std::vector<bool> needs to be fixed in the gcc-13 branch so I'm
committing it separately to simplify backporting.
libstdc++-v3/ChangeLog:
PR libstdc++/116070
* include/bits/stl_bvector.h: Check feature test macro before
using is_default_constructible_v.
---
libstdc++-v3/include/bits/stl_bvector.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libstdc++-v3/include/bits/stl_bvector.h
b/libstdc++-v3/include/bits/stl_bvector.h
index 245e1c3b3a7..c45b7ff3320 100644
--- a/libstdc++-v3/include/bits/stl_bvector.h
+++ b/libstdc++-v3/include/bits/stl_bvector.h
@@ -593,7 +593,7 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
_GLIBCXX20_CONSTEXPR
_Bvector_impl() _GLIBCXX_NOEXCEPT_IF(
is_nothrow_default_constructible<_Bit_alloc_type>::value)
-#if __cpp_concepts
+#if __cpp_concepts && __glibcxx_type_trait_variable_templates
requires is_default_constructible_v<_Bit_alloc_type>
#endif
: _Bit_alloc_type()
--
2.45.2
