Handle presence of various C++11 type traits, take 3 (#58, thanks to @…

…trapexit) Fix std11::is_assignable<T,U>: add second template argument
martinmoene · Sep 8, 2020 · adfbf6e · adfbf6e
1 parent dd5fc24
commit adfbf6e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/nonstd/optional.hpp b/include/nonstd/optional.hpp
@@ -458,7 +458,7 @@ typedef bool_constant< false > false_type;
 #if optional_HAVE( IS_ASSIGNABLE )
     using std::is_assignable;
 #else
-    template< class T > struct is_assignable : std11::true_type{};
+    template< class T, class U > struct is_assignable : std11::true_type{};
 #endif
 
 #if optional_HAVE( IS_MOVE_CONSTRUCTIBLE )