| // Copyright (c) 2011, 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 The following names are allowed for user-defined operators: | |
| /// <, >, <=, >=, ==, -, +, /, ˜/, *, %, |, ˆ, &, <<, >>, >>>, []=, [], ˜. | |
| /// @description Checks that operator ! cannot be defined in a user class. | |
| /// @author iefremov | |
| class C { | |
| bool operator !() {} | |
| // ^ | |
| // [analyzer] unspecified | |
| // [cfe] unspecified | |
| } | |
| main() { | |
| C? c = new C(); | |
| c!; | |
| // ^ | |
| // [analyzer] STATIC_WARNING.UNNECESSARY_NON_NULL_ASSERTION | |
| //^ | |
| // [cfe] Operand of null-aware operation '!' has type 'C' which excludes null. | |
| } |