In constant evaluation, handle final vars initialized at declaration site.

tests/language/compile_time_constant_checked5_test.dart

+// 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 {
+  const A();
+}
+
+class B extends A {
+  const B();
+}
+
+class C extends A {
+  const C();
+  const factory C.d() = D;
+}
+
+class D extends B implements C {
+  const D();
+}
+
+class Test1 {
+  final A x = const A(); /// 01: ok
+  final A x = const B(); /// 02: ok
+  final B x = const A(); /// 03: checked mode compile-time error
+  final B x = const C(); /// 04: checked mode compile-time error, static type warning
+  final B x = const C.d(); /// 05: static type warning
+  const Test1();
+}
+
+// Will be instantiated with U=A and V=B.
+class Test2<U, V> {
+  final U x = const A(); /// 06: static type warning
+  final U x = const B(); /// 07: static type warning
+  final V x = const A(); /// 08: checked mode compile-time error, static type warning
+  final V x = const C(); /// 09: checked mode compile-time error, static type warning
+  final V x = const C.d(); /// 10: static type warning
+  const Test2();
+}
+
+// Will be instantiated with U=A and V=B.
+class Test3<U extends A, V extends B> {
+  final U x = const A(); /// 11: ok
+  final U x = const B(); /// 12: static type warning
+  final V x = const A(); /// 13: checked mode compile-time error
+  final V x = const C(); /// 14: checked mode compile-time error, static type warning
+  final V x = const C.d(); /// 15: static type warning
+  const Test3();
+}
+
+// Will be instantiated with U=A and V=B.
+class Test4<U extends A, V extends A> {
+  final U x = const A(); /// 16: ok
+  final U x = const B(); /// 17: static type warning
+  final V x = const A(); /// 18: checked mode compile-time error
+  final V x = const C(); /// 19: checked mode compile-time error, static type warning
+  final V x = const C.d(); /// 20: static type warning
+  const Test4();
+}
+
+// Will be instantiated with U=dynamic and V=dynamic.
+class Test5<U extends A, V extends B> {
+  final U x = const A(); /// 21: ok
+  final U x = const B(); /// 22: static type warning
+  final V x = const A(); /// 23: ok
+  final V x = const C(); /// 24: static type warning
+  final V x = const C.d(); /// 25: static type warning
+  const Test5();
+}
+
+use(x) => x;
+
+main() {
+  use(const Test1());
+  use(const Test2<A, B>());
+  use(const Test3<A, B>());
+  use(const Test4<A, B>());
+  use(const Test5());
+}