blob: 1ee4e5adf06e6ba34b160dbcb0db80935a8ed57d [file] [log] [blame]
// 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.
// dart2js regression test for issue 8781.
import "package:expect/expect.dart";
class N {
var outgoing;
var incoming;
N(this.outgoing, this.incoming);
}
class A {
int offset = 0;
var list;
var node;
A(node)
: node = node,
list = node.outgoing;
next() {
// dart2js used to update [offset] twice: once in the optimized
// version, which would bailout to the non-optimized version
// because [list] is not an Array, and once in the non-optimized
// version.
var edge = list[offset++];
if (list == node.outgoing) {
list = node.incoming;
offset = 0;
} else
list = null;
return edge;
}
}
main() {
var o = new A(new N(confuse([1]), confuse([2])));
for (var i = 1; i <= 2; i++) Expect.equals(i, o.next());
Expect.equals(null, o.list);
}
// Use confuse to defeat type inferencing.
@pragma('dart2js:noInline')
@pragma('dart2js:assumeDynamic')
confuse(x) {
return x;
}