// Copyright (c) 2015, 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 | |
import 'package:expect/expect.dart'; | |
foo(x) => x; | |
check(y) { | |
Expect.equals('foo', y); | |
} | |
main() { | |
var x = foo('foo'); | |
var y = foo(x); | |
x = 'constant'; | |
check( | |
y); // 'y' should not propagate here unless reference to 'x' is rewritten | |
foo(x); | |
foo(x); | |
} |