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e07e88706d
Huge thanks to John for noting that 'consume' didn't provide the guarantees we wanted, and to Michael G. for getting a TSan build up and running to identify/verify this race. It's possible that this is overlay strict, and that we only need to look at the domain to ensure that the code and userInfo are visible. However, TSan seems to prefix the form in this patch, so we'll be more conservative for now. Fixes rdar://problem/27541751.
54 lines
1.4 KiB
Swift
54 lines
1.4 KiB
Swift
// RUN: %target-run-simple-swift
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// REQUIRES: executable_test
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// REQUIRES: objc_interop
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import SwiftPrivate
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import StdlibUnittest
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import Foundation
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enum SomeError : Error {
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case GoneToFail
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}
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struct ErrorAsNSErrorRaceTest : RaceTestWithPerTrialData {
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class RaceData {
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let error: Error
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init(error: Error) {
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self.error = error
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}
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}
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func makeRaceData() -> RaceData {
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return RaceData(error: SomeError.GoneToFail)
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}
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func makeThreadLocalData() {}
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func thread1(_ raceData: RaceData, _: inout Void) -> Observation3Int {
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let ns = raceData.error as NSError
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// Use valueForKey to bypass bridging, so we can verify that the identity
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// of the unbridged NSString object is stable.
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let domainInt: Int = unsafeBitCast(ns.value(forKey: "domain").map { $0 as AnyObject },
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to: Int.self)
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let code: Int = ns.code
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let userInfoInt: Int = unsafeBitCast(ns.value(forKey: "userInfo").map { $0 as AnyObject },
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to: Int.self)
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return Observation3Int(domainInt, code, userInfoInt)
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}
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func evaluateObservations(
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_ observations: [Observation3Int],
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_ sink: (RaceTestObservationEvaluation) -> Void
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) {
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sink(evaluateObservationsAllEqual(observations))
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}
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}
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var ErrorRaceTestSuite = TestSuite("Error races")
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ErrorRaceTestSuite.test("NSError bridging") {
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runRaceTest(ErrorAsNSErrorRaceTest.self, operations: 1000)
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}
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runAllTests()
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