diff -r 6b2aecc4f7d8 -r 8dc4bdc132d5 hotspot/src/share/vm/c1/c1_Runtime1.cpp
--- a/hotspot/src/share/vm/c1/c1_Runtime1.cpp	Wed Jun 09 18:50:45 2010 -0700
+++ b/hotspot/src/share/vm/c1/c1_Runtime1.cpp	Thu Jun 10 13:04:20 2010 -0700
@@ -1122,7 +1122,7 @@
   if (length == 0) return;
   // Not guaranteed to be word atomic, but that doesn't matter
   // for anything but an oop array, which is covered by oop_arraycopy.
-  Copy::conjoint_bytes(src, dst, length);
+  Copy::conjoint_jbytes(src, dst, length);
 JRT_END
 
 JRT_LEAF(void, Runtime1::oop_arraycopy(HeapWord* src, HeapWord* dst, int num))