building by gcc under linux

Author: cas4ey

include/shared_allocator/cached_allocator.hpp

@@ -108,6 +108,13 @@ namespace salloc {
 
         /** \brief Empty copy constructor.
 
+        Does nothing. */
+        cached_allocator(const ThisType&) throw()
+        {
+        }
+
+        /** \brief Empty copy constructor.
+
         Does nothing. */
         template <class U>
         cached_allocator(const U&) throw()