lib/z_k/extensions.rb in zk-0.8.1 vs lib/z_k/extensions.rb in zk-0.8.2

@@ -125,10 +125,12 @@
 ZookeeperStat::Stat.send(:include, ZK::Extensions::Stat)
 
 class ::Exception
   unless method_defined?(:to_std_format)
     def to_std_format
-      "#{self.class}: #{message}\n\t" + backtrace.join("\n\t")
+      ary = ["#{self.class}: #{message}"]
+      ary.concat(backtrace || [])
+      ary.join("\n\t")
     end
   end
 end
 
 class ::Thread