Vyacheslav Egorov
20f2a4b523
This regression test was accidentally omitted from the CL that fixed the issue itself. Bug: 32322 Change-Id: I6011752827c4f46ab0602f17e0508a53578993b4 Reviewed-on: https://dart-review.googlesource.com/44301 Reviewed-by: Vyacheslav Egorov <vegorov@google.com> Reviewed-by: Alexander Markov <alexmarkov@google.com> Commit-Queue: Vyacheslav Egorov <vegorov@google.com>
33 lines
1013 B
Dart
33 lines
1013 B
Dart
// Copyright (c) 2018, 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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// Verify that optimizing compiler does not perform an illegal code motion
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// past CheckNull instruction.
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import "package:expect/expect.dart";
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class C {
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final String padding = "";
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final String field = "1"; // Note: need padding to hit an object header
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// of the next object after [null] object when
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// doing illegal null.field read. Need to hit
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// object header to cause crash.
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}
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int foofoo(C p) {
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int sum = 0;
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for (var i = 0; i < 10; i++) {
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// Note: need redundant instructions in the loop to trigger Canonicalize
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// after CSE. Canonicalize then would illegally remove the Redefinition.
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sum += p.field.length;
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sum += p.field.length;
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}
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return sum;
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}
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void main() {
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Expect.equals(20, foofoo(new C()));
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Expect.throwsNoSuchMethodError(() => foofoo(null));
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}
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