tests/language/nnbd/type_promotion/function_expression_is_type_test.dart

// 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.

// SharedOptions=--enable-experiment=non-nullable

void f() {
  void g(Object x) {
    if (x is String) {
      x.length;
    }
    x = 42;
  }
}

void main() {}