blob: ba5c165dbd6a1f897b3c1c01f20338dd23352b55 [file] [log] [blame]
// Copyright (c) 2019, 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.
/// @assertion An expression of the form [e as T] is accepted as a potentially
/// and compile-time constant expression if [e] is potentially constant or
/// compile-time constant, respectively, and [T] is a compile-time constant type.
/// A compile-time constant type means any type that doesn't contain free type
/// variables, so the type expression always resolves to the exact same type.
/// @description Checks that an expression of the form [e as T] is not accepted
/// and causes compile time error if [e] is not a compile-time constant and it's
/// assigned to the [String] variable.
/// @author
dynamic str;
main() {
const String? obj = str as String?;
// ^
// [analyzer] unspecified
// [cfe] unspecified