diff --git a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ASTStringUtil.java b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ASTStringUtil.java
index f3e0d476dd0..9c0109b25a5 100644
--- a/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ASTStringUtil.java
+++ b/core/org.eclipse.cdt.core/model/org/eclipse/cdt/internal/core/model/ASTStringUtil.java
@@ -149,7 +149,7 @@ public class ASTStringUtil {
 			final boolean takesVarArgs= standardFunctionDecl.takesVarArgs();
 			final String[] parameterStrings= new String[parameters.length + (takesVarArgs ? 1 : 0)];
 			int i;
-			for (i=0; i < parameters.length; ++i) {
+			for (i = 0; i < parameters.length; ++i) {
 				parameterStrings[i]= getParameterSignatureString(parameters[i]);
 			}
 			if (takesVarArgs) {
@@ -160,10 +160,10 @@ public class ASTStringUtil {
 			final ICASTKnRFunctionDeclarator knrDeclarator= (ICASTKnRFunctionDeclarator)functionDeclarator;
 			final IASTName[] names= knrDeclarator.getParameterNames();
 			final String[] result= new String[names.length];
-			for(int i=0; i<names.length; i++) {
+			for (int i = 0; i < names.length; i++) {
 				if (names[i] != null) {
 					final IASTDeclarator declaratorForParameterName= knrDeclarator.getDeclaratorForParameterName(names[i]);
-                    if( declaratorForParameterName != null ) {
+                    if (declaratorForParameterName != null) {
                         result[i]= getSignatureString(declaratorForParameterName);
                     } else {
                     	result[i]= "?"; //$NON-NLS-1$
@@ -181,9 +181,9 @@ public class ASTStringUtil {
 	 * @param templateParams
 	 * @return a string array of template parameters
 	 */
-	public static String[] getTemplateParameterArray(ICPPASTTemplateParameter[] templateParams){
+	public static String[] getTemplateParameterArray(ICPPASTTemplateParameter[] templateParams) {
 		final String[] parameterTypes= new String[templateParams.length];
-		for (int i= 0; i < templateParams.length; i++) {
+		for (int i = 0; i < templateParams.length; i++) {
 			final StringBuilder paramType= new StringBuilder();
 			final ICPPASTTemplateParameter parameter= templateParams[i];
 			appendTemplateParameterString(paramType, parameter);
@@ -192,6 +192,27 @@ public class ASTStringUtil {
 		return parameterTypes;		
 	}
 
+	/**
+	 * Joins strings together using a given delimiter. 
+	 * @param strings the strings to join.
+	 * @param delimiter the delimiter that is put between the strings when joining them.
+	 * @return the joined string.
+	 */
+	public static String join(String[] strings, CharSequence delimiter) {
+    	if (strings.length == 0) {
+    		return ""; //$NON-NLS-1$
+    	} else if (strings.length == 1) {
+    		return strings[0];
+    	} else {
+    		StringBuilder buf = new StringBuilder(strings[0]);
+    		for (int i = 1; i < strings.length; i++) {
+    			buf.append(delimiter);
+    			buf.append(strings[i]);
+    		}
+    		return buf.toString();
+    	}
+	}
+
 	private static String getParameterSignatureString(IASTParameterDeclaration parameterDeclaration) {
 		return trimRight(appendParameterDeclarationString(new StringBuilder(), parameterDeclaration)).toString();
 	}
@@ -199,20 +220,20 @@ public class ASTStringUtil {
 	private static StringBuilder appendSignatureString(StringBuilder buffer, IASTDeclarator declarator) {
 		// get the declaration node
 		IASTNode node= declarator.getParent();
-		while(node instanceof IASTDeclarator ){
+		while (node instanceof IASTDeclarator) {
 			declarator= (IASTDeclarator)node;
 			node= node.getParent();
 		}
 		
 		// get the declSpec
 		final IASTDeclSpecifier declSpec;
-		if(node instanceof IASTParameterDeclaration)
+		if (node instanceof IASTParameterDeclaration)
 			declSpec= ((IASTParameterDeclaration) node).getDeclSpecifier();
-		else if(node instanceof IASTSimpleDeclaration)
+		else if (node instanceof IASTSimpleDeclaration)
 			declSpec= ((IASTSimpleDeclaration)node).getDeclSpecifier();
-		else if(node instanceof IASTFunctionDefinition)
+		else if (node instanceof IASTFunctionDefinition)
 			declSpec= ((IASTFunctionDefinition)node).getDeclSpecifier();
-		else if(node instanceof IASTTypeId)
+		else if (node instanceof IASTTypeId)
 		    declSpec= ((IASTTypeId)node).getDeclSpecifier();
 		else
 			declSpec= null;
@@ -229,7 +250,8 @@ public class ASTStringUtil {
 		return buffer;
 	}
 
-	private static StringBuilder appendDeclaratorString(StringBuilder buffer, IASTDeclarator declarator, boolean addParams) {
+	private static StringBuilder appendDeclaratorString(StringBuilder buffer, IASTDeclarator declarator,
+			boolean addParams) {
 		if (declarator == null) {
 			return buffer;
 		}
@@ -248,8 +270,7 @@ public class ASTStringUtil {
 					buffer.append(Keywords.cpLPAREN);
 					buffer.append(tmp);
 					buffer.append(Keywords.cpRPAREN);
-				}
-				else {
+				} else {
 					buffer.append(tmp);
 				}
 			}
@@ -350,7 +371,7 @@ public class ASTStringUtil {
 
 	private static StringBuilder appendArrayQualifiersString(StringBuilder buffer, IASTArrayDeclarator declarator) {
 		final IASTArrayModifier[] modifiers= declarator.getArrayModifiers();
-		for (int i= 0; i < modifiers.length; i++) {
+		for (int i = 0; i < modifiers.length; i++) {
 			buffer.append(Keywords.cpLBRACKET).append(Keywords.cpRBRACKET);
 		}
 		return buffer;
@@ -396,7 +417,7 @@ public class ASTStringUtil {
 			final IASTParameterDeclaration[] parameters= standardFunctionDecl.getParameters();
 			final boolean takesVarArgs= standardFunctionDecl.takesVarArgs();
 			buffer.append(Keywords.cpLPAREN);
-			for (int i= 0; i < parameters.length; i++) {
+			for (int i = 0; i < parameters.length; i++) {
 				if (i > 0) {
 					buffer.append(COMMA_SPACE);
 				}
@@ -413,13 +434,13 @@ public class ASTStringUtil {
 		} else if (functionDeclarator instanceof ICASTKnRFunctionDeclarator) {
 			final ICASTKnRFunctionDeclarator knrDeclarator= (ICASTKnRFunctionDeclarator)functionDeclarator;
 			final IASTName[] names= knrDeclarator.getParameterNames();
-			for(int i=0; i<names.length; i++) {
+			for (int i = 0; i < names.length; i++) {
 				if (i > 0) {
 					buffer.append(COMMA_SPACE);
 				}
 				if (names[i] != null) {
 					final IASTDeclarator declaratorForParameterName= knrDeclarator.getDeclaratorForParameterName(names[i]);
-                    if(declaratorForParameterName != null) {
+                    if (declaratorForParameterName != null) {
                         appendSignatureString(buffer, declaratorForParameterName);
                     }
 				}
@@ -611,7 +632,7 @@ public class ASTStringUtil {
 			final ICPPASTQualifiedName qualifiedName= (ICPPASTQualifiedName)name;
 			if (qualified) {
 				final IASTName[] names= qualifiedName.getNames();
-				for (int i= 0; i < names.length; i++) {
+				for (int i = 0; i < names.length; i++) {
 					if (i > 0) {
 						buffer.append(Keywords.cpCOLONCOLON);
 					}
@@ -625,7 +646,7 @@ public class ASTStringUtil {
 			appendQualifiedNameString(buffer, templateId.getTemplateName());
 			final IASTNode[] templateArguments= templateId.getTemplateArguments();
 			buffer.append(Keywords.cpLT);
-			for (int i= 0; i < templateArguments.length; i++) {
+			for (int i = 0; i < templateArguments.length; i++) {
 				if (i > 0) {
 					buffer.append(Keywords.cpCOMMA);
 				}
@@ -652,7 +673,7 @@ public class ASTStringUtil {
 		} else if (expression instanceof IASTExpressionList) {
 			final IASTExpressionList expressionList= (IASTExpressionList)expression;
 			final IASTExpression[] expressions= expressionList.getExpressions();
-			for (int i= 0; i < expressions.length; i++) {
+			for (int i = 0; i < expressions.length; i++) {
 				if (i > 0) {
 					buffer.append(COMMA_SPACE);
 				}
@@ -675,7 +696,7 @@ public class ASTStringUtil {
 		return buffer;
 	}
 
-	private static StringBuilder appendTemplateParameterString(StringBuilder buffer, ICPPASTTemplateParameter parameter){
+	private static StringBuilder appendTemplateParameterString(StringBuilder buffer, ICPPASTTemplateParameter parameter) {
 		if (parameter instanceof ICPPASTParameterDeclaration) {
 			appendParameterDeclarationString(buffer, (ICPPASTParameterDeclaration)parameter);
 		} else if (parameter instanceof ICPPASTSimpleTypeTemplateParameter) {
@@ -698,7 +719,7 @@ public class ASTStringUtil {
 			final ICPPASTTemplatedTypeTemplateParameter templatedTypeParameter= (ICPPASTTemplatedTypeTemplateParameter)parameter;
 			final ICPPASTTemplateParameter[] subParameters= templatedTypeParameter.getTemplateParameters();
 			buffer.append(Keywords.TEMPLATE).append(Keywords.cpLT);
-			for (int i= 0; i < subParameters.length; i++) {
+			for (int i = 0; i < subParameters.length; i++) {
 				final ICPPASTTemplateParameter templateParameter= subParameters[i];
 				if (i > 0) {
 					buffer.append(COMMA_SPACE);
@@ -710,5 +731,4 @@ public class ASTStringUtil {
 		}
 		return buffer;
 	}	
-	
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPNamespace.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPNamespace.java
index 52a808082e1..0044e11d904 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPNamespace.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPNamespace.java
@@ -40,6 +40,7 @@ import org.eclipse.cdt.internal.core.dom.Linkage;
 import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
 import org.eclipse.cdt.internal.core.dom.parser.ProblemBinding;
 import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPVisitor;
+import org.eclipse.cdt.internal.core.model.ASTStringUtil;
 import org.eclipse.core.runtime.PlatformObject;
 
 /**
@@ -346,21 +347,13 @@ public class CPPNamespace extends PlatformObject implements ICPPNamespace, ICPPI
 	public ILinkage getLinkage() {
 		return Linkage.CPP_LINKAGE;
 	}
-	
+
     @Override
 	public String toString() {
     	String[] names = getQualifiedName();
     	if (names.length == 0) {
     		return "<unnamed namespace>"; //$NON-NLS-1$
-    	} else if (names.length == 1) {
-    		return names[0];
-    	} else {
-    		StringBuilder buf = new StringBuilder(names[0]);
-    		for (int i = 1; i < names.length; i++) {
-    			buf.append(Keywords.cpCOLONCOLON);
-    			buf.append(names[i]);
-    		}
-    		return buf.toString();
     	}
+    	return ASTStringUtil.join(names, String.valueOf(Keywords.cpCOLONCOLON));
 	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPNamespace.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPNamespace.java
index 247a02ad3de..c462681299c 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPNamespace.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/pdom/dom/cpp/PDOMCPPNamespace.java
@@ -27,10 +27,12 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPUsingDirective;
 import org.eclipse.cdt.core.index.IIndexBinding;
 import org.eclipse.cdt.core.index.IIndexFileSet;
 import org.eclipse.cdt.core.index.IndexFilter;
+import org.eclipse.cdt.core.parser.Keywords;
 import org.eclipse.cdt.core.parser.util.ArrayUtil;
 import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics;
 import org.eclipse.cdt.internal.core.index.IIndexCPPBindingConstants;
 import org.eclipse.cdt.internal.core.index.IIndexScope;
+import org.eclipse.cdt.internal.core.model.ASTStringUtil;
 import org.eclipse.cdt.internal.core.pdom.PDOM;
 import org.eclipse.cdt.internal.core.pdom.db.BTree;
 import org.eclipse.cdt.internal.core.pdom.db.IBTreeVisitor;
@@ -41,7 +43,6 @@ import org.eclipse.core.runtime.CoreException;
 
 /**
  * @author Doug Schaefer
- *
  */
 class PDOMCPPNamespace extends PDOMCPPBinding
 		implements ICPPNamespace, ICPPNamespaceScope, IIndexScope {
@@ -74,12 +75,10 @@ class PDOMCPPNamespace extends PDOMCPPBinding
 	}
 
 	@Override
-	@SuppressWarnings("hiding")
 	public void accept(final IPDOMVisitor visitor) throws CoreException {
 		if (visitor instanceof IBTreeVisitor) {
 			getIndex().accept((IBTreeVisitor) visitor);
-		}
-		else {
+		} else {
 			getIndex().accept(new IBTreeVisitor() {
 				public int compare(int record) throws CoreException {
 					return 0;
@@ -112,7 +111,8 @@ class PDOMCPPNamespace extends PDOMCPPBinding
 
 	public IBinding[] find(String name) {
 		try {
-			BindingCollector visitor = new BindingCollector(getLinkageImpl(),  name.toCharArray(), IndexFilter.ALL_DECLARED_OR_IMPLICIT,false, true);
+			BindingCollector visitor = new BindingCollector(getLinkageImpl(),  name.toCharArray(),
+					IndexFilter.ALL_DECLARED_OR_IMPLICIT,false, true);
 			getIndex().accept(visitor);
 			return visitor.getBindings();
 		} catch (CoreException e) {
@@ -136,13 +136,15 @@ class PDOMCPPNamespace extends PDOMCPPBinding
 	}
 	
 	@Override
-	public IBinding[] getBindings(IASTName name, boolean resolve, boolean prefixLookup, IIndexFileSet fileSet) throws DOMException {
+	public IBinding[] getBindings(IASTName name, boolean resolve, boolean prefixLookup, IIndexFileSet fileSet)
+			throws DOMException {
 		IBinding[] result = null;
 		try {
 			if (!prefixLookup) {
 				return getBindingsViaCache(name.toCharArray());
 			}
-			BindingCollector visitor= new BindingCollector(getLinkageImpl(), name.toCharArray(), IndexFilter.ALL_DECLARED_OR_IMPLICIT, prefixLookup, !prefixLookup);
+			BindingCollector visitor= new BindingCollector(getLinkageImpl(), name.toCharArray(),
+					IndexFilter.ALL_DECLARED_OR_IMPLICIT, prefixLookup, !prefixLookup);
 			getIndex().accept(visitor);
 			IBinding[] bindings = visitor.getBindings();
 			if (fileSet != null) {
@@ -161,7 +163,8 @@ class PDOMCPPNamespace extends PDOMCPPBinding
 		if (result != null) {
 			return result;
 		}
-		BindingCollector visitor = new BindingCollector(getLinkageImpl(), name, IndexFilter.ALL_DECLARED_OR_IMPLICIT, false, true);
+		BindingCollector visitor = new BindingCollector(getLinkageImpl(), name,
+				IndexFilter.ALL_DECLARED_OR_IMPLICIT, false, true);
 		getIndex().accept(visitor);
 		result = visitor.getBindings();
 		pdom.putCachedResult(key, result);
@@ -177,7 +180,6 @@ class PDOMCPPNamespace extends PDOMCPPBinding
 		return true;
 	}
 
-	@SuppressWarnings("hiding")
 	public IBinding[] getMemberBindings() throws DOMException {
 		IBinding[] result = null;
 		final List<PDOMNode> preresult = new ArrayList<PDOMNode>();
@@ -192,15 +194,24 @@ class PDOMCPPNamespace extends PDOMCPPBinding
 				}
 			});
 			result = preresult.toArray(new IBinding[preresult.size()]);
-		} catch(CoreException ce) {
+		} catch (CoreException ce) {
 			CCorePlugin.log(ce);
 		}
 		return result;
 	}
 	
-	public void addUsingDirective(ICPPUsingDirective directive) throws DOMException {fail();}
+	public void addUsingDirective(ICPPUsingDirective directive) throws DOMException { fail(); }
 	
 	public IIndexBinding getScopeBinding() {
 		return this;
 	}
+
+    @Override
+	public String toString() {
+    	String[] names = getQualifiedName();
+    	if (names.length == 0) {
+    		return "<unnamed namespace>"; //$NON-NLS-1$
+    	}
+    	return ASTStringUtil.join(names, String.valueOf(Keywords.cpCOLONCOLON));
+	}
 }