--- old/src/hotspot/cpu/x86/gc/shared/barrierSetAssembler_x86.hpp	2018-10-31 23:12:44.603710876 +0100
+++ new/src/hotspot/cpu/x86/gc/shared/barrierSetAssembler_x86.hpp	2018-10-31 23:12:44.444712353 +0100
@@ -86,7 +86,7 @@
 
   virtual void nmethod_entry_barrier(MacroAssembler* masm);
 
-  virtual bool needs_explicit_null_check(intptr_t offset);
+  virtual bool needs_explicit_null_check(intptr_t offset) const;
 };
 
 #endif // CPU_X86_GC_SHARED_BARRIERSETASSEMBLER_X86_HPP