[libc-commits] [libc] [llvm] [libc][freebsd] initialize freebsd support (PR #124459)

[Schrodinger ZHU Yifan via libc-commits]

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@@ -125,20 +125,27 @@ LIBC_INLINE constexpr auto tuple_cat(const Tuples &...tuples) {
 } // namespace LIBC_NAMESPACE_DECL
 
 // Standard namespace definitions required for structured binding support.
+
+#ifdef _LIBCPP_BEGIN_NAMESPACE_STD
+_LIBCPP_BEGIN_NAMESPACE_STD
+#else
 namespace std {
+#endif
 
 template <class T> struct tuple_size;
 template <size_t Idx, class T> struct tuple_element;
 
 template <typename... Ts>
-struct tuple_size<LIBC_NAMESPACE::cpp::tuple<Ts...>>
-    : LIBC_NAMESPACE::cpp::tuple_size<LIBC_NAMESPACE::cpp::tuple<Ts...>> {};
+struct tuple_size<::LIBC_NAMESPACE::cpp::tuple<Ts...>>
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SchrodingerZhu wrote:

separated and made this patch stack onto that PR.

https://github.com/llvm/llvm-project/pull/124459