--- openjdk/hotspot/src/share/vm/gc_implementation/g1/g1ConcurrentMarkObjArrayProcessor.cpp	2020-11-02 16:54:31.999787520 +0100
+++ openjdk/hotspot/src/share/vm/gc_implementation/g1/g1ConcurrentMarkObjArrayProcessor.cpp	2020-11-02 16:59:27.993852851 +0100
@@ -41,7 +41,7 @@
 }
 
 size_t G1CMObjArrayProcessor::process_array_slice(objArrayOop obj, HeapWord* start_from, size_t remaining) {
-  size_t words_to_scan = MIN2(remaining, ObjArrayMarkingStride);
+  size_t words_to_scan = MIN2(remaining, (size_t) ObjArrayMarkingStride);
 
   if (remaining > ObjArrayMarkingStride) {
     push_array_slice(start_from + ObjArrayMarkingStride);