--- old/src/hotspot/share/opto/regmask.hpp 2018-03-09 13:58:32.016429997 -0500 +++ new/src/hotspot/share/opto/regmask.hpp 2018-03-09 13:58:31.153305306 -0500 @@ -62,7 +62,7 @@ // However, it means the ADLC can redefine the unroll macro and all loops // over register masks will be unrolled by the correct amount. -class RegMask VALUE_OBJ_CLASS_SPEC { +class RegMask { union { double _dummy_force_double_alignment[RM_SIZE>>1]; // Array of Register Mask bits. This array is large enough to cover