tests/language/null_aware/prefix_not_shortening_test.dart

// 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.

class C {
  C e() => this;
  C operator -() => this;
  C operator ~() => this;
}

void main() {
  final C? c = new C();
  -c?.e();
  // [error column 3, length 1]
  // [analyzer] COMPILE_TIME_ERROR.UNCHECKED_USE_OF_NULLABLE_VALUE
  // [cfe] Operator 'unary-' cannot be called on 'C?' because it is potentially null.

  ~c?.e();
  // [error column 3, length 1]
  // [analyzer] COMPILE_TIME_ERROR.UNCHECKED_USE_OF_NULLABLE_VALUE
  // [cfe] Operator '~' cannot be called on 'C?' because it is potentially null.
}