pkg/front_end/testcases/inference_new/invalid_assignment_during_toplevel_inference.dart

// 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.
// @dart=2.9
/*@testedFeatures=inference*/

int i;
String s;
var x = i = s;

main() {}