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diff --git a/src/org/eclipse/jdt/internal/compiler/lookup/SyntheticArgumentBinding.java b/src/org/eclipse/jdt/internal/compiler/lookup/SyntheticArgumentBinding.java
new file mode 100644
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+++ b/src/org/eclipse/jdt/internal/compiler/lookup/SyntheticArgumentBinding.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.internal.compiler.lookup;
+
+/**
+ * Specific local variable location used to:
+ * - either provide emulation for outer local variables used from within innerclass constructs,
+ * - or provide emulation to enclosing instances. 
+ * When it is mapping to an outer local variable, this actual outer local is accessible through 
+ * the public field #actualOuterLocalVariable.
+ *
+ * Such a synthetic argument binding will be inserted in all constructors of local innertypes before
+ * the user arguments.
+ */
+
+import org.eclipse.jdt.core.compiler.CharOperation;
+
+public class SyntheticArgumentBinding extends LocalVariableBinding {
+
+	{	
+		this.isArgument = true;
+		this.useFlag = USED;
+	}
+	
+	// if the argument is mapping to an outer local variable, this denotes the outer actual variable
+	public LocalVariableBinding actualOuterLocalVariable;
+	// if the argument has a matching synthetic field
+	public FieldBinding matchingField;
+
+	final static char[] OuterLocalPrefix = { 'v', 'a', 'l', '$' };
+	final static char[] EnclosingInstancePrefix = { 't', 'h', 'i', 's', '$' };
+	
+	public SyntheticArgumentBinding(LocalVariableBinding actualOuterLocalVariable) {
+
+		super(
+			CharOperation.concat(OuterLocalPrefix, actualOuterLocalVariable.name), 
+			actualOuterLocalVariable.type, 
+			AccFinal,
+			true);
+		this.actualOuterLocalVariable = actualOuterLocalVariable;
+	}
+
+	public SyntheticArgumentBinding(ReferenceBinding enclosingType) {
+
+		super(
+			CharOperation.concat(
+				SyntheticArgumentBinding.EnclosingInstancePrefix,
+				String.valueOf(enclosingType.depth()).toCharArray()),
+			enclosingType, 
+			AccFinal,
+			true);
+	}
+}