--- a/src/hotspot/share/gc/g1/g1BlockOffsetTable.inline.hpp	Mon Nov 25 12:22:13 2019 +0100
+++ b/src/hotspot/share/gc/g1/g1BlockOffsetTable.inline.hpp	Mon Nov 25 12:30:24 2019 +0100
@@ -55,7 +55,7 @@
 }
 
 void G1BlockOffsetTable::set_offset_array_raw(size_t index, u_char offset) {
-  Atomic::store(offset, &_offset_array[index]);
+  Atomic::store(&_offset_array[index], offset);
 }
 
 void G1BlockOffsetTable::set_offset_array(size_t index, u_char offset) {