0f6eafe855
Previously we would directly take the result from a fulfilled native promise bypassing the microtask queue. This is observably different from the spec. Note: Our variant of the bluebird benchmark is heavily favored towards fulfilled native promises because we don't use setTimeout (unlike the original benchmark). I suspect this pattern doesn't appear often in the wild so it's fine to take this hit for now. PSA for Perf sheriffs: this is going to tank some benchmarks. Bug: chromium:800651, v8:5691, v8:6007 Change-Id: Ic273bf2195529424b0d87359d28d5267060d5252 Reviewed-on: https://chromium-review.googlesource.com/895416 Commit-Queue: Sathya Gunasekaran <gsathya@chromium.org> Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Cr-Commit-Position: refs/heads/master@{#51010}
28 lines
555 B
JavaScript
28 lines
555 B
JavaScript
// Copyright 2018 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// Flags: --allow-natives-syntax
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var list = [];
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function log(item) { list.push(item); }
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async function f() {
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try {
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let namespace = await import(/a/);
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} catch(e) {
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log(1);
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}
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}
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f();
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async function g() {
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try {
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let namespace = await import({ get toString() { return undefined; }});
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} catch(e) {
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log(2);
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}
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}
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g();
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%RunMicrotasks();
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assertEquals(list, [1,2]);
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