diff -r ef67566c49ea -r 568e70bbd9aa src/share/classes/com/sun/tools/javac/comp/Attr.java
--- a/src/share/classes/com/sun/tools/javac/comp/Attr.java	Wed Mar 14 13:53:41 2012 -0700
+++ b/src/share/classes/com/sun/tools/javac/comp/Attr.java	Mon Mar 26 15:27:51 2012 +0100
@@ -2106,6 +2106,7 @@
         if (exprtype.constValue() != null)
             owntype = cfolder.coerce(exprtype, owntype);
         result = check(tree, capture(owntype), VAL, resultInfo);
+        chk.checkRedundantCast(localEnv, tree);
     }
 
     public void visitTypeTest(JCInstanceOf tree) {