diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTBaseSpecifier.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTBaseSpecifier.java
index c686c5bf9a6..acf317ddb47 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTBaseSpecifier.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTBaseSpecifier.java
@@ -13,8 +13,7 @@
  *******************************************************************************/
 package org.eclipse.cdt.internal.core.dom.parser.cpp;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.Arrays;
 
 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.IASTName;
@@ -148,7 +147,6 @@ public class CPPASTBaseSpecifier extends ASTNode implements ICPPASTBaseSpecifier
 	@Override
 	public IBinding[] findBindings(IASTName n, boolean isPrefix, String[] namespaces) {
 		IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix, namespaces);
-		List<IBinding> filtered = new ArrayList<>();
 
 		ICPPClassType classType = null;
 		if (getParent() instanceof CPPASTCompositeTypeSpecifier) {
@@ -159,7 +157,9 @@ public class CPPASTBaseSpecifier extends ASTNode implements ICPPASTBaseSpecifier
 			}
 		}
 
-		for (IBinding binding : bindings) {
+		int j = 0;
+		for (int i = 0; i < bindings.length; i++) {
+			IBinding binding = bindings[i];
 			if (binding instanceof IType) {
 				IType type = (IType) binding;
 
@@ -173,15 +173,21 @@ public class CPPASTBaseSpecifier extends ASTNode implements ICPPASTBaseSpecifier
 					if ((key == ICPPClassType.k_class || key == ICPPClassType.k_struct
 							|| type instanceof ICPPDeferredClassInstance || type instanceof ICPPUnknownMemberClass)
 							&& (classType == null || !type.isSameType(classType))) {
-						filtered.add(binding);
+						if (i != j)
+							bindings[j] = binding;
+						j++;
 					}
 				} else if (type instanceof ICPPTemplateTypeParameter) {
-					filtered.add(binding);
+					if (i != j)
+						bindings[j] = binding;
+					j++;
 				}
 			}
 		}
 
-		return filtered.toArray(new IBinding[filtered.size()]);
+		if (j < bindings.length)
+			return Arrays.copyOfRange(bindings, 0, j);
+		return bindings;
 	}
 
 	@Override
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTConstructorChainInitializer.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTConstructorChainInitializer.java
index b5672f2e1bc..1793a72c122 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTConstructorChainInitializer.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTConstructorChainInitializer.java
@@ -12,6 +12,8 @@
  *******************************************************************************/
 package org.eclipse.cdt.internal.core.dom.parser.cpp;
 
+import java.util.Arrays;
+
 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.IASTExpression;
 import org.eclipse.cdt.core.dom.ast.IASTImplicitName;
@@ -31,7 +33,6 @@ import org.eclipse.cdt.core.dom.ast.cpp.ICPPConstructor;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPField;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPMethod;
 import org.eclipse.cdt.core.dom.ast.cpp.ICPPNamespace;
-import org.eclipse.cdt.core.parser.util.ArrayUtil;
 import org.eclipse.cdt.core.parser.util.CharArraySet;
 import org.eclipse.cdt.internal.core.dom.parser.ASTNode;
 import org.eclipse.cdt.internal.core.dom.parser.cpp.semantics.CPPSemantics;
@@ -144,22 +145,28 @@ public class CPPASTConstructorChainInitializer extends ASTNode implements
 		IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix, namespaces);
 
 		CharArraySet baseClasses = null;
+		int j = 0;
 		for (int i = 0; i < bindings.length; i++) {
-			final IBinding b = bindings[i];
-			if ((b instanceof ICPPField) || (b instanceof ICPPNamespace)) {
-				// OK, keep binding.
-			} else if (b instanceof ICPPConstructor || b instanceof ICPPClassType) {
+			final IBinding binding = bindings[i];
+			if ((binding instanceof ICPPField) || (binding instanceof ICPPNamespace)) {
+				if (i != j)
+					bindings[j] = binding;
+				j++;
+			} else if (binding instanceof ICPPConstructor || binding instanceof ICPPClassType) {
 				if (baseClasses == null) 
 					baseClasses = getBaseClasses(n);
 				
-				if (!baseClasses.containsKey(b.getNameCharArray())) {
-					bindings[i] = null;
+				if (baseClasses.containsKey(binding.getNameCharArray())) {
+					if (i != j)
+						bindings[j] = binding;
+					j++;
 				}
-			} else {
-				bindings[i] = null;
 			}
 		}
-		return ArrayUtil.removeNulls(IBinding.class, bindings);
+
+		if (j < bindings.length)
+			return Arrays.copyOfRange(bindings, 0, j);
+		return bindings;
 	}
 
 	private CharArraySet getBaseClasses(IASTName name) {
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTFieldReference.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTFieldReference.java
index e71168b134e..66b34fa9d98 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTFieldReference.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTFieldReference.java
@@ -17,6 +17,7 @@ package org.eclipse.cdt.internal.core.dom.parser.cpp;
 import static org.eclipse.cdt.core.dom.ast.IASTExpression.ValueCategory.LVALUE;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
@@ -228,19 +229,21 @@ public class CPPASTFieldReference extends ASTNode
 	@Override
 	public IBinding[] findBindings(IASTName n, boolean isPrefix, String[] namespaces) {
 		IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix, namespaces);
-		List<IBinding> filtered = new ArrayList<>();
 
-		for (IBinding binding : bindings) {
-			if (binding instanceof ICPPMethod) {
-				ICPPMethod method = (ICPPMethod) binding;
-				if (method.isImplicit()) {
-					continue;
-				}
+		int j = 0;
+		for (int i = 0; i < bindings.length; i++) {
+			IBinding binding = bindings[i];
+			if (!(binding instanceof ICPPMethod && ((ICPPMethod) binding).isImplicit())) {
+				if (i != j)
+					bindings[j] = binding;
+				j++;
 			}
-			filtered.add(binding);
 		}
 		
-		return filtered.toArray(new IBinding[filtered.size()]);
+
+		if (j < bindings.length)
+			return Arrays.copyOfRange(bindings, 0, j);
+		return bindings;
 	}
 	
 	@Override
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTNamedTypeSpecifier.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTNamedTypeSpecifier.java
index 26ef3a52290..0119feb3558 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTNamedTypeSpecifier.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTNamedTypeSpecifier.java
@@ -11,8 +11,7 @@
  *******************************************************************************/
 package org.eclipse.cdt.internal.core.dom.parser.cpp;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.Arrays;
 
 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.IASTName;
@@ -116,19 +115,24 @@ public class CPPASTNamedTypeSpecifier extends CPPASTBaseDeclSpecifier
 	@Override
 	public IBinding[] findBindings(IASTName n, boolean isPrefix, String[] namespaces) {
 		IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix, namespaces);
-		List<IBinding> filtered = new ArrayList<IBinding>();
 
-		for (IBinding binding : bindings) {
+		int j = 0;
+		for (int i = 0; i < bindings.length; i++) {
+			IBinding binding = bindings[i];
 			if (binding instanceof ICPPClassType
 					|| binding instanceof IEnumeration
 					|| binding instanceof ICPPNamespace
 					|| binding instanceof ITypedef
 					|| binding instanceof ICPPTemplateTypeParameter) {
-				filtered.add(binding);
+				if (i != j)
+					bindings[j] = binding;
+				j++;
 			}
 		}
 
-		return filtered.toArray(new IBinding[filtered.size()]);
+		if (j < bindings.length)
+			return Arrays.copyOfRange(bindings, 0, j);
+		return bindings;
 	}
 	
 	@Override
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTUsingDeclaration.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTUsingDeclaration.java
index d18666da41f..a078fc39fba 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTUsingDeclaration.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTUsingDeclaration.java
@@ -13,8 +13,7 @@
  *******************************************************************************/
 package org.eclipse.cdt.internal.core.dom.parser.cpp;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.Arrays;
 
 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.IASTName;
@@ -108,15 +107,20 @@ public class CPPASTUsingDeclaration extends CPPASTAttributeOwner
 	@Override
 	public IBinding[] findBindings(IASTName n, boolean isPrefix, String[] namespaces) {
 		IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix, namespaces);
-		List<IBinding> filtered = new ArrayList<IBinding>();
 		
-		for (IBinding binding : bindings) {
+		int j = 0;
+		for (int i = 0; i < bindings.length; i++) {
+			IBinding binding = bindings[i];
 			if (binding instanceof ICPPNamespace) {
-				filtered.add(binding);
+				if (i != j)
+					bindings[j] = binding;
+				j++;
 			}
 		}
 		
-		return filtered.toArray(new IBinding[filtered.size()]);
+		if (j < bindings.length)
+			return Arrays.copyOfRange(bindings, 0, j);
+		return bindings;
 	}
 
 	@Override
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTUsingDirective.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTUsingDirective.java
index c97ec6677e1..eaed06a7bdb 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTUsingDirective.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTUsingDirective.java
@@ -13,8 +13,7 @@
  *******************************************************************************/
 package org.eclipse.cdt.internal.core.dom.parser.cpp;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.Arrays;
 
 import org.eclipse.cdt.core.dom.ast.ASTVisitor;
 import org.eclipse.cdt.core.dom.ast.IASTName;
@@ -95,15 +94,20 @@ public class CPPASTUsingDirective extends CPPASTAttributeOwner
 	@Override
 	public IBinding[] findBindings(IASTName n, boolean isPrefix, String[] namespaces) {
 		IBinding[] bindings = CPPSemantics.findBindingsForContentAssist(n, isPrefix, namespaces);
-		List<IBinding> filtered = new ArrayList<IBinding>();
 
-		for (IBinding binding : bindings) {
+		int j = 0;
+		for (int i = 0; i < bindings.length; i++) {
+			IBinding binding = bindings[i];
 			if (binding instanceof ICPPNamespace) {
-				filtered.add(binding);
+				if (i != j)
+					bindings[j] = binding;
+				j++;
 			}
 		}
 
-		return filtered.toArray(new IBinding[filtered.size()]);
+		if (j < bindings.length)
+			return Arrays.copyOfRange(bindings, 0, j);
+		return bindings;
 	}
 	
 	@Override