diff -r 282d5ac0914e -r 53409a3a93f8 langtools/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java
--- a/langtools/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Fri Apr 01 10:17:56 2011 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javac/comp/MemberEnter.java	Sun Apr 03 17:00:50 2011 -0700
@@ -788,8 +788,7 @@
             // Internally to java.lang.invoke, a @PolymorphicSignature annotation
             // acts like a classfile attribute.
             if (!c.type.isErroneous() &&
-                    (types.isSameType(c.type, syms.polymorphicSignatureType) ||
-                     types.isSameType(c.type, syms.transientPolymorphicSignatureType))) {
+                types.isSameType(c.type, syms.polymorphicSignatureType)) {
                 if (!target.hasMethodHandles()) {
                     // Somebody is compiling JDK7 source code to a JDK6 target.
                     // Make it an error, since it is unlikely but important.