blob: 1be361b0e7a6a9119104d09de560b14e284be038 [file] [log] [blame]
// Copyright (c) 2019, 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.
/// Regression test: stack trace could be null when using async-await.
import 'dart:async';
import 'package:expect/expect.dart';
main() async {
C value = await test();
Expect.identical(StackTrace.empty, value._s);
Future<C> test() async {
try {
await throwInFuture();
return C(StackTrace.fromString("no-throw"));
} on MyException catch (e, s) {
return C(s); // Note: s is *no longer* null
Future<int> throwInFuture() {
var completer = new Completer<int>();
var future = completer.future;
new Future(() {}).then((_) {
completer.completeError(new MyException());
return future;
class MyException {}
class C {
final StackTrace _s; // Global inference used to infer this field as non-null
String toString() => '[[$_s]]';