Fix type variables in closures.

tests/language/type_variable_closure_test.dart

Index: tests/language/type_variable_closure_test.dart
diff --git a/tests/language/type_variable_closure_test.dart b/tests/language/type_variable_closure_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..7fd7381dd3f9f3821164b39ba22016d1141b9b91
--- /dev/null
+++ b/tests/language/type_variable_closure_test.dart
@@ -0,0 +1,27 @@
+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "package:expect/expect.dart";
+
+class C<T> {
+  C.foo() {
+    x = (a) => a is T;
+  }
+  C.bar() {
+    x = (a) => a is! T;
+  }
+  C.baz() {
+    x = (a) => a as T;
+  }
+  var x;
+}
+
+main() {
+  Expect.isTrue(new C<int>.foo().x(1));
+  Expect.isFalse(new C<int>.foo().x('1'));
+  Expect.isFalse(new C<int>.bar().x(1));
+  Expect.isTrue(new C<int>.bar().x('1'));
+  Expect.equals(new C<int>.baz().x(1), 1);
+  Expect.throws(() => new C<int>.baz().x('1'));
+}