1 files changed, 6 insertions, 0 deletions
diff --git a/gnu/xml/xpath/StringLengthFunction.java b/gnu/xml/xpath/StringLengthFunction.java
index 4545c895f..7f5ceafee 100644
--- a/gnu/xml/xpath/StringLengthFunction.java
+++ b/gnu/xml/xpath/StringLengthFunction.java
@@ -38,6 +38,7 @@ exception statement from your version. */
 package gnu.xml.xpath;
 
 import java.util.List;
+import javax.xml.namespace.QName;
 import org.w3c.dom.Node;
 
 /**
@@ -77,6 +78,11 @@ final class StringLengthFunction
                                     arg.clone(context));
   }
 
+  public boolean references(QName var)
+  {
+    return (arg == null) ? false : arg.references(var);
+  }
+
   public String toString()
   {
     return (arg == null) ? "string-length()" : "string-length(" + arg + ")";