diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexBindingResolutionBugs.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexBindingResolutionBugs.java
index fc91c3139f9..627c528bc62 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexBindingResolutionBugs.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexBindingResolutionBugs.java
@@ -16,8 +16,12 @@ import junit.framework.TestSuite;
 import org.eclipse.cdt.core.dom.ast.IASTName;
 import org.eclipse.cdt.core.dom.ast.IBinding;
 import org.eclipse.cdt.core.dom.ast.IScope;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPClassTemplate;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPNamespace;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPSpecialization;
+import org.eclipse.cdt.core.dom.ast.cpp.ICPPTemplateParameter;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPVariable;
+import org.eclipse.cdt.core.parser.util.ObjectMap;
 
 /**
  * For testing PDOM binding resolution
@@ -161,6 +165,27 @@ public class IndexBindingResolutionBugs extends IndexBindingResolutionTestBase {
 		IScope scope= binding.getScope();
 	}
 	
+	//	template<class T, class U, class V>
+	//	class A {};
+	
+	//	template<>
+	//	class A<int, bool, double> {};
+	public void testBug180784() throws Exception {
+		IBinding b0= getBindingFromASTName("A<int, bool, double> {};", 20);
+		assertInstance(b0, ICPPSpecialization.class);
+		ICPPSpecialization s= (ICPPSpecialization) b0;
+		ObjectMap map= s.getArgumentMap();
+		IBinding b1= s.getSpecializedBinding();
+		assertInstance(b1, ICPPClassTemplate.class);
+		ICPPClassTemplate t= (ICPPClassTemplate) b1;
+		ICPPTemplateParameter[] ps = t.getTemplateParameters();
+		assertNotNull(ps);
+		assertEquals(3, ps.length);
+		assertNotNull(map.get(ps[0]));
+		assertNotNull(map.get(ps[1]));
+		assertNotNull(map.get(ps[2]));
+	}
+	
 	//	class A{};
 	//
 	//	template<typename T>
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/index/composite/CompositeIndexBinding.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/index/composite/CompositeIndexBinding.java
index a82025c0434..ed617a2ccd0 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/index/composite/CompositeIndexBinding.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/index/composite/CompositeIndexBinding.java
@@ -100,4 +100,8 @@ public abstract class CompositeIndexBinding implements IIndexBinding {
 		
 		return super.equals(obj);
 	}
+
+	public int hashCode() {
+		return rbinding.hashCode();
+	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/PDOMNode.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/PDOMNode.java
index 1f15ed04d1c..125de3f5add 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/PDOMNode.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/PDOMNode.java
@@ -77,6 +77,10 @@ public abstract class PDOMNode implements IPDOMNode {
 		return super.equals(obj);
 	}
 
+	public int hashCode() {
+		return 31 * pdom.getPath().hashCode() + 41 * record;
+	}
+
 	public void accept(IPDOMVisitor visitor) throws CoreException {
 		// No children here.
 	}