--- a/tools/java/src/stx/libjava/tools/environment/ReflectiveEnvironment.java	Sun Jul 20 02:41:14 2014 +0100
+++ b/tools/java/src/stx/libjava/tools/environment/ReflectiveEnvironment.java	Sun Jul 20 21:46:44 2014 +0100
@@ -26,6 +26,7 @@
 public class ReflectiveEnvironment implements INameEnvironment {
 	
 	private static final boolean DEBUG_isPackage = false;
+	private static Field FIELD_ClassLoader_Classes;
 	
 	/** 
 	 * A java.lang.ClassLoader where to search for classes & packages
@@ -39,6 +40,16 @@
 	
 	public TypeRegistry types;
 	
+	static {
+		try {
+			FIELD_ClassLoader_Classes = ClassLoader.class.getDeclaredField("classes");
+			FIELD_ClassLoader_Classes.setAccessible(true);
+		} catch (NoSuchFieldException e) {
+			FIELD_ClassLoader_Classes = null;
+		} catch (SecurityException e) {
+			FIELD_ClassLoader_Classes = null;
+		}
+	}
 			
 	public ReflectiveEnvironment() {
 		 this(new TypeRegistry(), ClassLoader.getSystemClassLoader() );
@@ -174,10 +185,32 @@
 	 * The default package is always assumed to exist.
 	 *
 	 */
+	@SuppressWarnings("unchecked")
 	public boolean isPackage(String packageName, ClassLoader loader) {
 		if (loader == null) {
 			return isPackage(packageName, sun.misc.Launcher.getBootstrapClassPath().getURLs());
 		}
+		if (FIELD_ClassLoader_Classes != null) {
+			int packageNameLen = packageName.length();
+			Vector<Class<?>> classes;
+			try {
+				classes = (Vector<Class<?>>)FIELD_ClassLoader_Classes.get(loader);
+				Iterator<Class<?>> i = classes.iterator();
+				while (i.hasNext()) {					 
+					String className = i.next().getName();
+					int classNameLen = className.length();					
+					if ((classNameLen > packageNameLen) &&
+						(className.charAt(packageNameLen) == '.') &&
+						(className.startsWith(packageName))) {
+						return true;
+					}
+				}				
+			} catch (IllegalArgumentException e) {
+			} catch (IllegalAccessException e) {
+			}
+		}
+			
+		
 		if (loader instanceof URLClassLoader) {
 			if (isPackage(packageName, ((URLClassLoader)loader).getURLs())) {
 				return true;