--- a/hotspot/src/share/vm/prims/jni.cpp	Tue Jun 17 13:08:15 2008 -0700
+++ b/hotspot/src/share/vm/prims/jni.cpp	Sun Jun 22 20:07:58 2008 -0700
@@ -631,7 +631,7 @@
   DTRACE_PROBE2(hotspot_jni, FatalError__entry, env, msg);
   tty->print_cr("FATAL ERROR in native method: %s", msg);
   thread->print_stack();
-  os::abort(false); // Prevent core dump, causes a jck failure.
+  os::abort(); // Dump core and abort
 JNI_END