diff options
Diffstat (limited to 'libstdc++-v3/include/std/variant')
| -rw-r--r-- | libstdc++-v3/include/std/variant | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/libstdc++-v3/include/std/variant b/libstdc++-v3/include/std/variant index c41f9f2..beed396 100644 --- a/libstdc++-v3/include/std/variant +++ b/libstdc++-v3/include/std/variant @@ -44,24 +44,22 @@ #include <bits/stl_iterator_base_funcs.h> #include <bits/stl_construct.h> #include <bits/utility.h> // in_place_index_t -#ifndef _GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS -# include <ext/aligned_buffer.h> -#endif #if __cplusplus >= 202002L # include <compare> #endif -namespace std _GLIBCXX_VISIBILITY(default) -{ -_GLIBCXX_BEGIN_NAMESPACE_VERSION - -#ifdef _GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS +#if __cpp_concepts >= 202002L && __cpp_constexpr >= 201811L // P2231R1 constexpr needs constexpr unions and constrained destructors. # define __cpp_lib_variant 202106L #else +# include <ext/aligned_buffer.h> // Use __aligned_membuf instead of union. # define __cpp_lib_variant 202102L #endif +namespace std _GLIBCXX_VISIBILITY(default) +{ +_GLIBCXX_BEGIN_NAMESPACE_VERSION + template<typename... _Types> class tuple; template<typename... _Types> class variant; template <typename> struct hash; |