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// Copyright (c) 2013, 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.
import "package:expect/expect.dart";
// Regression test for using `null` as a key with `forEach`.
main() {
var x = new Map<int, int>();
x[1] = 2;
x[null] = 1;
int c = 0;
x.forEach((int i, int j) {
Expect.isTrue(i == null || i is int, 'int or null expected');
Expect.equals(2, c);