Trick View: Can't set variables with -- units #301

Test before trying to convert NULL char * to string.

Author: alexlin0

trick_source/sim_services/VariableServer/var_server_ext.cpp

@@ -525,8 +525,11 @@ int var_set_base( const char  * var , T value , const char * units ) {
             V_DATA v_data ;
             v_tree.v_data = &v_data ;
             var_set_value( v_data , value) ;
-            //ref->units = (char *)units ;
-            ref->units = (char *)(map_trick_units_to_udunits(units).c_str()) ;
+            if ( units != NULL ) {
+                ref->units = (char *)(map_trick_units_to_udunits(units).c_str()) ;
+            } else {
+                ref->units = (char *)units ;
+            }
             ref_assignment(ref , &v_tree) ;
             free(ref) ;
         } else {