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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 // Dart test program for testing arrays. | |
5 | |
6 bar() => true; | |
7 | |
8 // The type propagation in Dart2Js wrongly took the intersection of all incoming | |
9 // types in a loop-phi. In this case the back-edge brought type 'number' which, | |
10 // combined with 'integer' (i = 0) was narrowed to 'integer'. As a result no | |
11 // check was inserted for the list access. | |
12 foo(a) { | |
13 var i = 0; | |
14 while (true) { | |
15 if (i > 1) return a[i]; | |
16 if (bar()) { | |
17 // Adding a double guarantees a double result. Therefore guard by an if. | |
18 i = i + 1.5; | |
19 } | |
20 } | |
21 } | |
22 | |
23 main() { | |
24 Expect.throws(() => foo([1, 2])); | |
25 } | |
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