diff -r 7fe655cad9b1 -r 6b48ebae2569 src/share/classes/com/sun/tools/javac/comp/Attr.java
--- a/src/share/classes/com/sun/tools/javac/comp/Attr.java	Tue Jun 11 09:59:34 2013 +0100
+++ b/src/share/classes/com/sun/tools/javac/comp/Attr.java	Fri Jun 14 16:25:09 2013 +0100
@@ -3405,7 +3405,7 @@
                      Env<AttrContext> env,
                      ResultInfo resultInfo) {
             boolean isPolymorhicSignature =
-                sym.kind == MTH && ((MethodSymbol)sym.baseSymbol()).isSignaturePolymorphic(types);
+                (sym.baseSymbol().flags() & SIGNATURE_POLYMORPHIC) != 0;
             return isPolymorhicSignature ?
                     checkSigPolyMethodId(tree, site, sym, env, resultInfo) :
                     checkMethodIdInternal(tree, site, sym, env, resultInfo);