--- old/src/hotspot/share/gc/shenandoah/shenandoahStringDedup.cpp	2019-08-13 12:39:46.904171386 +0200
+++ new/src/hotspot/share/gc/shenandoah/shenandoahStringDedup.cpp	2019-08-13 12:39:46.600166112 +0200
@@ -50,14 +50,14 @@
     const markWord mark = java_string->mark();
 
     // Having/had displaced header, too risk to deal with them, skip
-    if (mark == markWord::INFLATING() || mark->has_displaced_mark_helper()) {
+    if (mark == markWord::INFLATING() || mark.has_displaced_mark_helper()) {
       return;
     }
 
     // Increase string age and enqueue it when it rearches age threshold
-    markWord new_mark = mark->incr_age();
+    markWord new_mark = mark.incr_age();
     if (mark == java_string->cas_set_mark(new_mark, mark)) {
-      if (mark->age() == StringDeduplicationAgeThreshold) {
+      if (mark.age() == StringDeduplicationAgeThreshold) {
         StringDedupQueue::push(ShenandoahWorkerSession::worker_id(), java_string);
       }
     }