--- old/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.hpp	2017-08-17 13:30:06.410905919 -0400
+++ new/src/os_cpu/bsd_zero/vm/atomic_bsd_zero.hpp	2017-08-17 13:30:06.298900175 -0400
@@ -276,7 +276,7 @@
 inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
                                                 T volatile* dest,
                                                 T compare_value,
-                                                cmpxchg_memory_order order) {
+                                                cmpxchg_memory_order order) const {
   STATIC_CAST(4 == sizeof(T));
 #ifdef ARM
   return cmpxchg_using_helper<int>(arm_compare_and_swap, exchange_value, dest, compare_value);
@@ -294,7 +294,7 @@
 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
                                                 T volatile* dest,
                                                 T compare_value,
-                                                cmpxchg_memory_order order) {
+                                                cmpxchg_memory_order order) const {
   STATIC_CAST(8 == sizeof(T));
   return __sync_val_compare_and_swap(dest, compare_value, exchange_value);
 }