--- old/src/hotspot/share/gc/g1/heapRegionTracer.hpp	2018-02-26 11:03:52.753894072 +0100
+++ new/src/hotspot/share/gc/g1/heapRegionTracer.hpp	2018-02-26 11:03:52.465882688 +0100
@@ -34,8 +34,7 @@
                                         G1HeapRegionTraceType::Type from,
                                         G1HeapRegionTraceType::Type to,
                                         uintptr_t start,
-                                        size_t used,
-                                        uint allocationContext);
+                                        size_t used);
 };
 
 #endif // SHARE_VM_GC_G1_HEAPREGIONTRACER_HPP