Report parser error if a class isn't terminated by }.

dart/tests/language/class_syntax_test.dart

Index: dart/tests/language/class_syntax_test.dart
diff --git a/dart/tests/language/class_syntax_test.dart b/dart/tests/language/class_syntax_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..f14822d399f211224f3bb264e98b3b1216d8ed44
--- /dev/null
+++ b/dart/tests/language/class_syntax_test.dart
@@ -0,0 +1,12 @@
+// Copyright (c) 2012, 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.
+
+main() {
+  new ClassSyntaxTest();
+}
+
+class ClassSyntaxTest {
+  /* /// 01: compile-time error
+}
+*/ /// 01: continued