--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/T6227617.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,37 @@
+/*
+ * @test  /nodynamiccopyright/
+ * @bug 6227617
+ * @summary Lint option for redundant casts
+ * @compile -Werror T6227617.java
+ * @compile/ref=T6227617.out -XDstdout -XDrawDiagnostics -Xlint:cast T6227617.java
+ */
+import java.util.HashMap;
+import java.util.Map;
+
+class T6227617 {
+    void m() {
+        int i1 = 2;
+        int i2 = (int) i1;  // warn
+
+        float f1 = 1f;
+        int i3 = (int) f1;
+
+        String s = (String) ""; // warn
+        Object o = (Object) "";
+
+        Map<String, Integer> m = new HashMap<String, Integer>();
+        Integer I1 = (Integer) m.get(""); // warn
+    }
+
+    // The following cause NPE in Attr with an Attr-based solution for -Xlint:cast
+    static final int i1 = Foo.i1;
+    static final String s = Foo.s;
+}
+
+class Foo
+{
+    static final int i1 = (int) 1;
+    static final int i2 = (int) 1L;
+
+    static final String s = (String) "abc";
+}