Ticket #3968: ublas_storage.patch

storage.hpp

@@ -1598 +1598 @@
         }
 
         BOOST_UBLAS_INLINE
-        void swap(self_type rhs) {
+        void swap(self_type& rhs) {
             self_type tmp(rhs);
             rhs = *this;
             *this = tmp;
         }
         BOOST_UBLAS_INLINE
-        friend void swap(self_type lhs, self_type rhs) {
+        friend void swap(self_type& lhs, self_type& rhs) {
             lhs.swap(rhs);
         }
 
@@ -1770 +1770 @@
         }
 
         BOOST_UBLAS_INLINE
-        void swap(self_type rhs) {
+        void swap(self_type& rhs) {
             self_type tmp(rhs);
             rhs = *this;
             *this = tmp;
         }
         BOOST_UBLAS_INLINE
-        friend void swap(self_type lhs, self_type rhs) {
+        friend void swap(self_type& lhs, self_type& rhs) {
             lhs.swap(rhs);
         }