Fix VM crash when parsing a non-existing redirecting constructor

tests/language/regress_28217_test.dart

Index: tests/language/regress_28217_test.dart
diff --git a/tests/language/regress_28217_test.dart b/tests/language/regress_28217_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..6761b81dca948c6cd53540ec574abe0773b321ce
--- /dev/null
+++ b/tests/language/regress_28217_test.dart
@@ -0,0 +1,15 @@
+// Copyright (c) 2017, 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.
+
+// Test non-existing redirecting constructor and
+// redirecting to a factory constructor.
+
+class B {
+  B() : this.a();    /// none: compile-time error
+  factory B.a() { }  /// 01: compile-time error
+  B.a();             /// 02: ok
+}
+
+main() => new B();
+