src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp

rev 60500 : 8251359: Shenandoah: filter null oops before calling enqueue/SATB barrier

@@ -1323,11 +1323,11 @@
   }
 }
 
 // Keep alive an object that was loaded with AS_NO_KEEPALIVE.
 void ShenandoahHeap::keep_alive(oop obj) {
-  if (is_concurrent_mark_in_progress()) {
+  if (is_concurrent_mark_in_progress() && (obj != NULL)) {
     ShenandoahBarrierSet::barrier_set()->enqueue(obj);
   }
 }
 
 void ShenandoahHeap::heap_region_iterate(ShenandoahHeapRegionClosure* blk) const {