Lasse R.H. Nielsen
b06a34fc5a
This never worked. It was silently accepted, at least if the future had no listeners, then any later attempt to use the future would cause a stack overflow or other impossible results. Moves some `_Future._complete` call out of try-catch. The `_complete` shouldn't throw (but before this fix it could). Moving them out of the `try`/`catch` makes such errors be reported as unhandled, instead of catching them and trying to complete the same future again with an error, when it's possibly in an inconsistent state. Fixes #43662. Based on https://github.com/dart-lang/sdk/issues/43662#issuecomment-2058870247 CoreLibraryReviewExempt: No response. Bug: http://dartbug.com/43662 Change-Id: I96a4f01bcd5b6cee93bba267299852569a9b905c Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/363060 Commit-Queue: Lasse Nielsen <lrn@google.com> Reviewed-by: Nate Bosch <nbosch@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
63 lines
1.6 KiB
Dart
63 lines
1.6 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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import 'dart:async';
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import 'package:async_helper/async_helper.dart';
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import 'package:expect/expect.dart';
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import 'catch_errors.dart';
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main() {
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asyncStart();
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Completer done = new Completer();
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var events = [];
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catchErrors(() {
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events.add("catch error entry");
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catchErrors(() {
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events.add("catch error entry2");
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new Future.error("future error");
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new Future.error("future error2");
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new Future.value(499).then((x) => throw x);
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new Future.delayed(const Duration(milliseconds: 50), () {
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throw "delayed error";
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});
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throw "catch error";
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}).listen((x) {
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events.add("i $x");
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if (x == "delayed error") done.complete(true);
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}, onDone: () {
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Expect.fail("Unexpected callback");
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});
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events.add("after inner");
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throw "inner throw";
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}).listen((x) {
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events.add("o $x");
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}, onDone: () {
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Expect.fail("Unexpected callback");
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});
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done.future.whenComplete(() {
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// Give some time to run the handlers.
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Timer.run(() {
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Expect.listEquals([
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"catch error entry",
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"catch error entry2",
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"after inner",
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"main exit",
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"i catch error",
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// We guarantee the order of one stream but not any
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// global order.
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"o inner throw",
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"i future error",
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"i future error2",
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"i 499",
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"i delayed error",
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], events);
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asyncEnd();
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});
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});
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events.add("main exit");
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}
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