diff --git a/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java b/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java
index f0c924c4ca95fb0c1899be69f867c406b3ab866c..2eaa2dc6a06c7a0dc5076f5bd5e3f91d31abf8a6 100644
--- a/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java
+++ b/test/testlibrary/whitebox/sun/hotspot/WhiteBox.java
@@ -208,4 +208,13 @@ public class WhiteBox {
                        .findAny()
                        .orElse(null);
   }
+  public native int getOffsetForName0(String name);
+  public int getOffsetForName(String name) throws Exception {
+    int offset = getOffsetForName0(name);
+    if (offset == -1) {
+      throw new RuntimeException(name + " not found");
+    }
+    return offset;
+  }
+
 }