diff -r 56bf71d64d51 -r e92153ed8bdc src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp	Mon Nov 25 12:22:13 2019 +0100
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp	Mon Nov 25 12:30:24 2019 +0100
@@ -305,7 +305,7 @@
 }
 
 void ShenandoahHeapRegion::clear_live_data() {
-  Atomic::release_store_fence<size_t>(&_live_data, 0);
+  Atomic::release_store_fence(&_live_data, (size_t)0);
 }
 
 void ShenandoahHeapRegion::reset_alloc_metadata() {