diff -r 7fe655cad9b1 -r 6b48ebae2569 src/share/classes/com/sun/tools/javac/jvm/ClassReader.java
--- a/src/share/classes/com/sun/tools/javac/jvm/ClassReader.java	Tue Jun 11 09:59:34 2013 +0100
+++ b/src/share/classes/com/sun/tools/javac/jvm/ClassReader.java	Fri Jun 14 16:25:09 2013 +0100
@@ -1985,6 +1985,9 @@
                                       syms.methodClass);
         }
         MethodSymbol m = new MethodSymbol(flags, name, type, currentOwner);
+        if (types.isSignaturePolymorphic(m)) {
+            m.flags_field |= SIGNATURE_POLYMORPHIC;
+        }
         if (saveParameterNames)
             initParameterNames(m);
         Symbol prevOwner = currentOwner;