Throw a runtime error when trying to call a constructor of a class that could not be resolved.

tests/language/call_constructor_on_unresolvable_class_test.dart

+// 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.
+
+// Check that calling a constructor of a class that cannot be resolved causes
+// a runtime error.
+
+never() => false;

[ngeoffray, 2012/08/24 15:43:48]

This will be inlined and the code below line 12 will be dead code. You should
probably just play with random and make sure you always have false (sra@ made a
lot of these things in the tests/compiler/dart2js_native tests).

[karlklose, 2012/08/28 09:09:15]

Done.

+
+main() {
+  if (never()) {
+    // These should not produce errors because the calls are never executed.
+    new A();         /// 01: static type warning
+    new A.foo();     /// 02: static type warning
+    new library.A(); /// 03: static type warning
+  }
+
+  new A();         /// 04: runtime error
+  new A.foo();     /// 05: runtime error
+  new library.A(); /// 06: runtime error
+  try {            /// 07: runtime error
+    new A();       /// 07: continued
+  } catch (e) {    /// 07: continued
+  }                /// 07: continued
+}