diff -r fd16c54261b3 -r 06bc494ca11e langtools/test/tools/javac/6547131/T.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/6547131/T.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,21 @@
+/**
+ * @test
+ * @bug     6547131
+ * @summary java.lang.ClassFormatError when using old collection API
+ * @compile T.java
+ * @run main T
+ */
+
+import p.*;
+
+class SubI implements Outer.I {
+    SubI() { }
+    Outer.I getI() { return this; }
+}
+
+public class T {
+    public static void main(String argv[]){
+        SubI sub = new SubI();
+        Outer.I inter = (Outer.I)sub.getI();
+    }
+}