added missing constexpr

akrzemi1 · Jun 28, 2016 · 9dddc10 · 9dddc10
1 parent d41a354
commit 9dddc10
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/optional.hpp b/optional.hpp
@@ -234,7 +234,7 @@ T* static_addressof(T& ref)
 
 // the call to convert<A>(b) has return type A and converts b to type A iff b decltype(b) is implicitly convertible to A  
 template <class U>
-U convert(U v) { return v; }
+constexpr U convert(U v) { return v; }
 
 } // namespace detail