Suspend long jump scope when invoking Dart code.

tests/language/mirror_in_static_init_test.dart

+// Copyright (c) 2015, 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.
+
+// Error in class finalization triggered via mirror in a static initializer.
+// Simply check that we do not crash.
+
+library mirror_in_static_init_test;
+
+import 'dart:mirrors';
+
+abstract class C {
+  int _a;
+  C([this._a: 0]);
+}
+
+final int staticField = () {
+  var lib = currentMirrorSystem().findLibrary(#mirror_in_static_init_test);
+  var lst = List.from(lib.declarations.values);
+  return 42;
+}();
+
+main() {
+  return staticField;
+}