throw e is not a compile-time constant expression

tests/language/compile_time_constant_r_test.dart

+// Copyright (c) 2014, 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.
+
+const x =
+          throw  /// 01: compile-time error
+          "x";
+
+const y = const {0:
+                    throw  /// 02: compile-time error
+                    "y"};
+
+main() {
+  print(x);
+  print(y);
+  const z =
+            throw  /// 03: compile-time error
+            1+1+1;
+  print(z);
+}