| // Copyright (c) 2020, 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 Null check operator: If N is an expression of the form E!, then: |
| /// Let before(E) = before(N) |
| /// Let null(N) = unreachable(null(E)) |
| /// Let nonNull(N) = nonNull(E) |
| /// @description Checks reachability after Null check operator |
| /// |
| /// @author sgrekhov@unipro.ru |
| /// @issue 42021 |
| |
| |
| main () { |
| int i; |
| var s = "" as String?; |
| if (s! != null) { |
| i = 42; // `i` is not definitely assigned because in a weak mode the |
| // condition may be false |
| } |
| i; // It is an error to read a local non-nullable variable which is not definitely assigned |
| //^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
