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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>
83 lines
1.9 KiB
Dart
83 lines
1.9 KiB
Dart
// Copyright (c) 2015, 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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import "package:expect/expect.dart";
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// Test that optimized 'null + x' and slow path '+' produce the same error.
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//
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// They don't, sometimes we generate null.$add, sometimes JSNull_methods.$add.
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@pragma('dart2js:noInline')
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@pragma('dart2js:assumeDynamic')
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confuse(x) => x;
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void check2(String name, name1, f1, name2, f2) {
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Error trap(part, f) {
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try {
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f();
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} catch (e) {
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return e;
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}
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Expect.fail('should throw: $name.$part');
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}
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var e1 = trap(name1, f1);
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var e2 = trap(name2, f2);
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var s1 = '$e1';
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var s2 = '$e2';
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Expect.equals(s1, s2, '\n $name.$name1: "$s1"\n $name.$name2: "$s2"\n');
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}
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void check(String name, f1, f2, [f3, f4, f5, f6]) {
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check2(name, 'f1', f1, 'f2', f2);
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if (f3 != null) check2(name, 'f1', f1, 'f3', f3);
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if (f4 != null) check2(name, 'f1', f1, 'f4', f4);
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if (f5 != null) check2(name, 'f1', f1, 'f5', f5);
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if (f6 != null) check2(name, 'f1', f1, 'f6', f6);
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}
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class NullPlusInt {
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static f1() {
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return confuse(null) + confuse(1);
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}
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static f2() {
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return confuse(null) + 1;
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}
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static f3() {
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return (confuse(null) as int) + confuse(1);
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}
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static f4() {
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return (confuse(null) as int) + 1;
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}
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static f5() {
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var a = null;
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return a + confuse(1);
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}
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static f6() {
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var a = null;
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return a + 1;
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}
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static test() {
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// Sometimes we generate null.$add, sometimes JSNull_methods.$add. The best
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// we can do is check there is an error.
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check('NullPlusInt', f1, f1);
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check('NullPlusInt', f2, f2);
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check('NullPlusInt', f3, f3);
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check('NullPlusInt', f4, f4);
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check('NullPlusInt', f5, f5);
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check('NullPlusInt', f6, f6);
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}
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}
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main() {
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NullPlusInt.test();
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}
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