diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPFunctionSet.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPFunctionSet.java
index b31f607ea95..3bfb20dc58e 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPFunctionSet.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPFunctionSet.java
@@ -99,4 +99,16 @@ public class CPPFunctionSet implements ICPPTwoPhaseBinding {
 			fName.setBinding(new CPPDeferredFunction(null, fName.toCharArray(), fBindings));
 		}
 	}
+
+	/** For debugging only */
+	@Override
+	public String toString() {
+		if (fName != null)
+			return fName.toString();
+		try {
+			return String.join("::", fBindings[0].getQualifiedName()); //$NON-NLS-1$
+		} catch (DOMException e) {
+			return super.toString();
+		}
+	}
 }