diff -r 7d67f9206d8f -r a425d0819f36 langtools/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java
--- a/langtools/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Tue Jun 11 09:59:34 2013 +0100
+++ b/langtools/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Fri Jun 14 16:25:09 2013 +0100
@@ -560,6 +560,10 @@
             chk.setDeferredLintHandler(prevLintHandler);
         }
 
+        if (types.isSignaturePolymorphic(m)) {
+            m.flags_field |= SIGNATURE_POLYMORPHIC;
+        }
+
         // Set m.params
         ListBuffer<VarSymbol> params = new ListBuffer<VarSymbol>();
         JCVariableDecl lastParam = null;