--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/UnsafeLoadSnippets.java	2019-05-14 01:06:09.736439232 +0200
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/replacements/UnsafeLoadSnippets.java	2019-05-14 01:06:09.332436289 +0200
@@ -50,7 +50,7 @@
     public static Object lowerUnsafeLoad(Object object, long offset) {
         Object fixedObject = FixedValueAnchorNode.getObject(object);
         if (object instanceof java.lang.ref.Reference && referentOffset(INJECTED_METAACCESS) == offset) {
-            return Word.objectToTrackedPointer(fixedObject).readObject((int) offset, BarrierType.PRECISE);
+            return Word.objectToTrackedPointer(fixedObject).readObject((int) offset, BarrierType.WEAK_FIELD);
         } else {
             return Word.objectToTrackedPointer(fixedObject).readObject((int) offset, BarrierType.NONE);
         }