Add operator<=> overload for zero-sized arrays

2025-07-29 12:17:40 +02:00 · 2025-01-27 03:59:32 +02:00
parent 329e59454f
commit 68db6ebd2d
2 changed files with 9 additions and 2 deletions
--- a/include/boost/array.hpp
+++ b/include/boost/array.hpp
@ -396,6 +396,13 @@ namespace boost {
        return 0 <=> 0; // std::strong_ordering::equal
    }

+    template<class T>
+    constexpr auto operator<=> (const array<T,0>& x, const array<T,0>& y)
+        -> decltype( 0 <=> 0 )
+    {
+        return 0 <=> 0; // std::strong_ordering::equal
+    }
+
 #endif

    // undocumented and obsolete