diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
index e2e77da4291..aae2bea0a5c 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
@@ -3549,5 +3549,19 @@ public class AST2CPPTests extends AST2BaseTest {
     	assertTrue( I8.getType() instanceof IBasicType );
     	assertEquals( ((IBasicType)I8.getType()).getType(), IBasicType.t_char );    	
 	}
+	
+	public void testBug90623_2() throws Exception {
+	    StringBuffer buffer = new StringBuffer();
+	    buffer.append( "typedef int I;             \n"); //$NON-NLS-1$
+	    buffer.append( "void f11( I i );           \n"); //$NON-NLS-1$
+	    buffer.append( "void main(){ f a; }          \n"); //$NON-NLS-1$
+	    
+	    IASTTranslationUnit tu = parse( buffer.toString(), ParserLanguage.CPP ); //$NON-NLS-1$
+		CPPNameCollector col = new CPPNameCollector();
+    	tu.accept( col );
+
+    	IASTName f = col.getName( 5 );
+    	f.resolvePrefix();
+	}
 }
 
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
index 15410719ae6..3db874d9f54 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
@@ -1324,9 +1324,11 @@ public class CPPSemantics {
 	    if( bindings == null || bindings.length == 0 )
 	        return null;
 	    else if( bindings.length == 1 ){
-	    	if( bindings[0] instanceof IASTName )
-	    		return ((IASTName) bindings[ 0 ]).resolveBinding();
-    		return (IBinding) bindings[0];
+	        if( bindings[0] instanceof IBinding )
+	    	    return (IBinding) bindings[0];
+	    	else if( bindings[0] instanceof IASTName && ((IASTName) bindings[0]).getBinding() != null )
+	    	    return ((IASTName) bindings[ 0 ]).getBinding();
+
 	    }
 	    
 	    if( name.getPropertyInParent() != STRING_LOOKUP_PROPERTY ) {
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPTypedef.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPTypedef.java
index 24068f6762b..076ea4023be 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPTypedef.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPTypedef.java
@@ -99,12 +99,12 @@ public class CPPTypedef implements ITypedef, ITypeContainer, ICPPInternalBinding
 	public IType getType() {
 	    if( type == null ){
 	        type = CPPVisitor.createType( (IASTDeclarator) typedefName.getParent() );
-	        if( type instanceof ITypedef ){
-	            try {
-                    type = ((ITypedef)type).getType();
-                } catch ( DOMException e ) {
-                }
-	        }
+//	        if( type instanceof ITypedef ){
+//	            try {
+//                    type = ((ITypedef)type).getType();
+//                } catch ( DOMException e ) {
+//                }
+//	        }
 	    }
 		return type;
 	}