mirror of
https://github.com/dart-lang/sdk
synced 2024-09-16 04:27:17 +00:00
d4154ac6dc
Change-Id: Iad2963c7f9c184b089dc6d15aa4442f58d194bc2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/151983 Reviewed-by: Nicholas Shahan <nshahan@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
31 lines
795 B
Dart
31 lines
795 B
Dart
// Copyright (c) 2012, 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";
|
|
|
|
// This test triggered an NPE in dart2js.
|
|
// The bug needed:
|
|
// - double usage of the same variable in one expression ("b != b").
|
|
// - replacement of "b" with "typechecked b".
|
|
// - ...
|
|
// The example below is minimal (as far as I was able to do).
|
|
|
|
num foo(num a, num b) {
|
|
if (a > b) return b;
|
|
if (b is double) {
|
|
if (true) {
|
|
if (true) {
|
|
return (a + b) * a * b;
|
|
}
|
|
}
|
|
// Check for NaN and b == -0.0.
|
|
if (a == 0 && b == 0 || b != b) return b;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
main() {
|
|
Expect.equals(1, foo(2, 1));
|
|
}
|