pq
dd069fc800
Bug: Change-Id: I358bcf6d7d3d4c78b572ed4bbcb05696c47268cc Reviewed-on: https://dart-review.googlesource.com/10640 Reviewed-by: Ben Konyi <bkonyi@google.com>
30 lines
782 B
Dart
30 lines
782 B
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import "package:expect/expect.dart";
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// This test triggered an NPE in dart2js.
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// The bug needed:
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// - double usage of the same variable in one expression ("b != b").
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// - replacement of "b" with "typechecked b".
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// - ...
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// The example below is minimal (as far as I was able to do).
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num foo(num a, num b) {
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if (a > b) return b;
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if (b is double) {
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if (true) {
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if (true) {
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return (a + b) * a * b;
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}
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}
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// Check for NaN and b == -0.0.
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if (a == 0 && b == 0 || b != b) return b;
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}
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}
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main() {
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Expect.equals(1, foo(2, 1));
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}
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