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912005267d
Change-Id: I46be49b2effec3e38a3dc44cd45cfe736f77fa78 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182680 Commit-Queue: Sigmund Cherem <sigmund@google.com> Reviewed-by: Joshua Litt <joshualitt@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com> Reviewed-by: Stephen Adams <sra@google.com>
49 lines
1.2 KiB
Dart
49 lines
1.2 KiB
Dart
// Copyright (c) 2013, 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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// @dart = 2.7
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// Regression test for dart2js: we incorrectly modeled `super.x = rhs` as a
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// call and not an assignment, so the type of the expression was incorrectly
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// assumed to be the return type of the setter rather than the type of the rhs.
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import 'package:expect/expect.dart';
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abstract class A {
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set x(v) {}
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set z(v) {}
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set y(v) => 'hi';
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}
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class S extends A {
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var _x; // was bad: inferred as null, than [null | int]
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dynamic _y = ''; // was bad: inferred as String, rather than [String | int]
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var _z; // was ok : inferred as [null | int]
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set x(v) {
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_x = super.x = v;
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}
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set z(v) {
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super.z = v;
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_z = v;
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}
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set y(v) {
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_y = super.y = v;
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}
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get isXNull => _x == null;
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get isZNull => _z == null;
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}
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main() {
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var s = new S()
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..x = 2
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..y = 2
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..z = 2;
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Expect.equals(false, s.isXNull); // was incorrectly optimized to 'true'
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Expect.equals(false, s._y is String); // was incorrectly optimized to 'true'
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Expect.equals(false, s.isZNull); // prints false
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}
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