Fix constant evaluation in the presence of nonexistent fields.

tests/language/compile_time_constant13_test.dart

Index: tests/language/compile_time_constant13_test.dart
diff --git a/tests/language/compile_time_constant13_test.dart b/tests/language/compile_time_constant13_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..ba978a86755b9fd2c375ae758d510e67a0c93001
--- /dev/null
+++ b/tests/language/compile_time_constant13_test.dart
@@ -0,0 +1,27 @@
+// 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.
+
+class A {
+  final x;       /// 01: ok
+                 /// 02: compile-time error
+  var x;         /// 03: compile-time error
+  get x => null; /// 04: compile-time error
+  set x(v) {}    /// 05: compile-time error
+
+  const A()
+    : x = 'foo'  /// 01: continued

[Brian Wilkerson, 2014/10/13 20:54:56]

Why not just combine all these cases, given that they are all the same:

  const A() : x = 'foo';

[Paul Berry, 2014/10/13 21:04:34]

Unfortunately, that doesn't work, since the tests are also run in a "none"
configuration, where none of the lines containing "///" are included, and that
test is expected to pass.

+    : x = 'foo'  /// 02: continued
+    : x = 'foo'  /// 03: continued
+    : x = 'foo'  /// 04: continued
+    : x = 'foo'  /// 05: continued
+  ;
+}
+
+use(x) => x;
+
+A a = const A();
+
+main() {
+  use(a);
+}