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[SR-15309] Task isCancelled instance property not reporting value correctly #57631

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swift-ci opened this issue Oct 12, 2021 · 3 comments
Closed

[SR-15309] Task isCancelled instance property not reporting value correctly #57631

swift-ci opened this issue Oct 12, 2021 · 3 comments
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@ktoso
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. concurrency Feature: umbrella label for concurrency language features

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@swift-ci
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Previous ID SR-15309
Radar rdar://problem/84146091
Original Reporter tourultimate (JIRA User)
Type Bug
Status Resolved
Resolution Done
Environment

Xcode 13 RC, Swift 5.5

iPhone 12 Pro Simulator

Additional Detail from JIRA
Votes 1
Component/s
Labels Bug, Concurrency
Assignee @ktoso
Priority Medium

md5: 92ab0d5576a0c182a9c51b9e2efb9230

Issue Description:

The `isCancelled` instance property on a Task is not reporting the correct value. This test fails 100/100 times:

```
func testCancelBug() async {
let t = Task {
await Task.yield()
XCTAssertTrue(Task.isCancelled)
}

t.cancel()
XCTAssertTrue(t.isCancelled) // Fails here: XCTAssertTrue failed
}
```
@ktoso
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ktoso commented Oct 12, 2021

@swift-ci create

@ktoso
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ktoso commented Oct 12, 2021

Thanks for the report, this indeed looks fishy

@ktoso
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ktoso commented Oct 13, 2021

For better or worse, this was a very silly bug... Fixed in: #39710

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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@ktoso ktoso

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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. concurrency Feature: umbrella label for concurrency language features
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@ktoso @swift-ci