--- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	Mon May 07 14:57:23 2018 +0200
+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	Mon May 07 14:57:25 2018 +0200
@@ -2164,6 +2164,14 @@
   return ret_val;
 }
 
+void G1CollectedHeap::deduplicate_string(oop str) {
+  assert(java_lang_String::is_instance(str), "invariant");
+
+  if (G1StringDedup::is_enabled()) {
+    G1StringDedup::deduplicate(str);
+  }
+}
+
 void G1CollectedHeap::prepare_for_verify() {
   _verifier->prepare_for_verify();
 }