blob: 3d092c42f420c8d709babc6ac325da0cf8fd5493 [file] [log] [blame]
// Copyright (c) 2017, 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 {}
class B extends A {
Object operator +(Object x) => x;
}
void main() {
B b = B();
b += 2;
//^
// [cfe] A value of type 'Object' can't be assigned to a variable of type 'B'.
// ^
// [analyzer] COMPILE_TIME_ERROR.INVALID_ASSIGNMENT
++b;
//^^^
// [analyzer] COMPILE_TIME_ERROR.INVALID_ASSIGNMENT
// [cfe] A value of type 'Object' can't be assigned to a variable of type 'B'.
b++;
//^^^
// [analyzer] COMPILE_TIME_ERROR.INVALID_ASSIGNMENT
// ^
// [cfe] A value of type 'Object' can't be assigned to a variable of type 'B'.
}