--- old/src/share/vm/utilities/vmError.cpp	2010-09-15 10:08:40.000000000 -0700
+++ new/src/share/vm/utilities/vmError.cpp	2010-09-15 10:08:40.000000000 -0700
@@ -845,6 +845,9 @@
     log_done = true;
   }
 
+  // Flush buffered output, finish log files before OnError
+  // commands are executed.
+  ostream_abort();
 
   static bool skip_OnError = false;
   if (!skip_OnError && OnError && OnError[0]) {