Harry Terkelsen
3d31aa2ff7
R=sigmund@google.com Review URL: https://codereview.chromium.org/2345083003 .
27 lines
787 B
Dart
27 lines
787 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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// Make sure we use JavaScript semantics when compiling compile-time constants.
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// In this case we test that the value-range analysis uses JavaScript semantics
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// too.
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int inscrutable(int x) => x == 0 ? 0 : x | inscrutable(x & (x - 1));
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foo() {
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var a = const [1, 2];
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var i = 0x100000000;
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if (inscrutable(i) == 0) {
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i = 0x100000001;
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}
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i = 0xFFFFFFFFF & i; // In JS semantics [:i:] will be truncated to 32 bits.
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i = 0x100000001 - i;
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return a[i];
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}
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main() {
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Expect.throws(() => foo(), (e) => e is RangeError);
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}
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