diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexCPPBindingResolutionBugsTest.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexCPPBindingResolutionBugsTest.java
index 41b09277131..7007d2d2c64 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexCPPBindingResolutionBugsTest.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexCPPBindingResolutionBugsTest.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2006, 2015 Wind River Systems, Inc. and others.
+ * Copyright (c) 2006, 2023 Wind River Systems, Inc. and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -1414,4 +1414,37 @@ public abstract class IndexCPPBindingResolutionBugsTest extends IndexBindingReso
 	public void testIssue_254() throws Exception {
 		checkBindings();
 	}
+
+	// // no header needed
+
+	//	void introducing_in_global_ns(struct struct_in_global_ns *arg) {}
+	//
+	//	class UsingStructFromGlobalNamespace {
+	//		struct_in_global_ns *p;
+	//	};
+	//
+	//	UsingStructFromGlobalNamespace usingStructFromGlobalNs;
+	//
+	//	namespace named {
+	//	void introducing_in_named_ns(struct struct_in_named_ns *arg) {}
+	//	}
+	//
+	//	class UsingStructFromNamespaceNs {
+	//		named::struct_in_named_ns *p;
+	//	};
+	//
+	//	UsingStructFromNamespaceNs usingStructFromNamespaceNs;
+	//
+	//	namespace {
+	//	void introducing_in_anonymous_ns(struct struct_in_anonymous_ns *arg) {}
+	//	}
+	//
+	//	class UsingStructFromAnonymousNs {
+	//		struct_in_anonymous_ns *p;
+	//	};
+	//
+	//	UsingStructFromAnonymousNs usingStructFromAnonymousNs;
+	public void testStructNameIntroducedInNamespace() throws Exception {
+		checkBindings();
+	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
index 69a3591d454..e767efafa01 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/CPPSemantics.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2004, 2016 IBM Corporation and others.
+ * Copyright (c) 2004, 2023 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -2513,7 +2513,7 @@ public class CPPSemantics {
 				IIndexFileSet indexFileSet = tu.getIndexFileSet();
 				if (indexFileSet != null && indexFileSet.containsDeclaration(indexBinding)) {
 					return true;
-				} else if (indexBinding instanceof ICPPConstructor) {
+				} else if (indexBinding instanceof ICPPConstructor || indexBinding instanceof ICPPClassType) {
 					IIndexFileSet astFileSet = tu.getASTFileSet();
 					return astFileSet != null && astFileSet.containsDeclaration(indexBinding);
 				} else {