--- old/src/share/vm/utilities/globalDefinitions_xlc.hpp	2015-11-04 23:07:51.602377498 -0500
+++ new/src/share/vm/utilities/globalDefinitions_xlc.hpp	2015-11-04 23:07:50.102292965 -0500
@@ -180,5 +180,6 @@
 #define SIZE_64G  ((uint64_t) UCONST64( 0x1000000000))
 #define SIZE_1T   ((uint64_t) UCONST64(0x10000000000))
 
+#define THREAD_LOCAL_DECL __thread
 
 #endif // SHARE_VM_UTILITIES_GLOBALDEFINITIONS_XLC_HPP