diff -r 8a4543b30586 -r 86b773b7cb40 src/share/classes/com/sun/tools/javac/file/JavacFileManager.java
--- a/src/share/classes/com/sun/tools/javac/file/JavacFileManager.java	Tue Oct 13 15:26:30 2009 -0700
+++ b/src/share/classes/com/sun/tools/javac/file/JavacFileManager.java	Wed Oct 14 15:41:28 2009 -0700
@@ -968,7 +968,7 @@
             } else {
                 File siblingDir = null;
                 if (sibling != null && sibling instanceof RegularFileObject) {
-                    siblingDir = ((RegularFileObject)sibling).f.getParentFile();
+                    siblingDir = ((RegularFileObject)sibling).file.getParentFile();
                 }
                 return new RegularFileObject(this, new File(siblingDir, fileName.basename()));
             }