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>
41 lines
1.1 KiB
Dart
41 lines
1.1 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
import 'dart:async';
|
|
|
|
import 'package:async_helper/async_helper.dart';
|
|
import 'package:expect/expect.dart';
|
|
|
|
import 'catch_errors.dart';
|
|
|
|
main() {
|
|
asyncStart();
|
|
var events = [];
|
|
StreamController controller = new StreamController();
|
|
Stream stream = controller.stream;
|
|
// Test that the subscription of a stream is what counts. The error (2) runs
|
|
// through the map-stream which goes through the nested `catchError` but
|
|
// the nested `catchError` won't see the error.
|
|
catchErrors(() {
|
|
stream = stream.map((x) => x + 100);
|
|
}).listen((x) {
|
|
events.add(x);
|
|
});
|
|
stream
|
|
.transform(new StreamTransformer.fromHandlers(handleError: (e, st, sink) {
|
|
sink.add("error $e");
|
|
})).listen((x) {
|
|
events.add("stream $x");
|
|
}, onDone: () {
|
|
Expect.listEquals([
|
|
"stream 101",
|
|
"stream error 2",
|
|
], events);
|
|
asyncEnd();
|
|
});
|
|
controller.add(1);
|
|
controller.addError(2);
|
|
controller.close();
|
|
}
|