Returntype of get() has been fixed in the updated version R6 of the

proposal (fixes #104).

include/unique_resource.h

@@ -112,7 +112,7 @@ namespace sr
             m_execute_on_destruction = false;
         }
 
-        decltype(auto) get() const noexcept
+        const R& get() const noexcept
         {
             return m_resource.get();
         }