TEST 'Swift(linux-x86_64) :: Concurrency/dispatch_inference.swift' FAILED

[shahmishal]

FAIL: Swift(linux-x86_64) :: Concurrency/dispatch_inference.swift (661 of 17024)

******************** TEST 'Swift(linux-x86_64) :: Concurrency/dispatch_inference.swift' FAILED ********************
Script:
--
: 'RUN: at line 1';   /home/build-user/build/buildbot_linux/swift-linux-x86_64/bin/swift-frontend -target x86_64-unknown-linux-gnu  -module-cache-path /home/build-user/build/buildbot_linux/swift-linux-x86_64/swift-test-results/x86_64-unknown-linux-gnu/clang-module-cache -swift-version 4  -define-availability 'SwiftStdlib 9999:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999' -define-availability 'SwiftStdlib 5.0:macOS 10.14.4, iOS 12.2, watchOS 5.2, tvOS 12.2' -define-availability 'SwiftStdlib 5.1:macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0' -define-availability 'SwiftStdlib 5.2:macOS 10.15.4, iOS 13.4, watchOS 6.2, tvOS 13.4' -define-availability 'SwiftStdlib 5.3:macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0' -define-availability 'SwiftStdlib 5.4:macOS 11.3, iOS 14.5, watchOS 7.4, tvOS 14.5' -define-availability 'SwiftStdlib 5.5:macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0' -define-availability 'SwiftStdlib 5.6:macOS 12.3, iOS 15.4, watchOS 8.5, tvOS 15.4' -define-availability 'SwiftStdlib 5.7:macOS 13.0, iOS 16.0, watchOS 9.0, tvOS 16.0' -define-availability 'SwiftStdlib 5.8:macOS 13.3, iOS 16.4, watchOS 9.4, tvOS 16.4' -define-availability 'SwiftStdlib 5.9:macOS 14.0, iOS 17.0, watchOS 10.0, tvOS 17.0' -define-availability 'SwiftStdlib 5.10:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999'  -typo-correction-limit 10   -disable-availability-checking -I /home/build-user/swift-corelibs-libdispatch -I /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64/src/swift/swift -L /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64 -vfsoverlay /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64/dispatch-vfs-overlay.yaml -warn-concurrency /home/build-user/swift/test/Concurrency/dispatch_inference.swift -emit-sil -o /dev/null -verify
: 'RUN: at line 2';   /home/build-user/build/buildbot_linux/swift-linux-x86_64/bin/swift-frontend -target x86_64-unknown-linux-gnu  -module-cache-path /home/build-user/build/buildbot_linux/swift-linux-x86_64/swift-test-results/x86_64-unknown-linux-gnu/clang-module-cache -swift-version 4  -define-availability 'SwiftStdlib 9999:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999' -define-availability 'SwiftStdlib 5.0:macOS 10.14.4, iOS 12.2, watchOS 5.2, tvOS 12.2' -define-availability 'SwiftStdlib 5.1:macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0' -define-availability 'SwiftStdlib 5.2:macOS 10.15.4, iOS 13.4, watchOS 6.2, tvOS 13.4' -define-availability 'SwiftStdlib 5.3:macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0' -define-availability 'SwiftStdlib 5.4:macOS 11.3, iOS 14.5, watchOS 7.4, tvOS 14.5' -define-availability 'SwiftStdlib 5.5:macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0' -define-availability 'SwiftStdlib 5.6:macOS 12.3, iOS 15.4, watchOS 8.5, tvOS 15.4' -define-availability 'SwiftStdlib 5.7:macOS 13.0, iOS 16.0, watchOS 9.0, tvOS 16.0' -define-availability 'SwiftStdlib 5.8:macOS 13.3, iOS 16.4, watchOS 9.4, tvOS 16.4' -define-availability 'SwiftStdlib 5.9:macOS 14.0, iOS 17.0, watchOS 10.0, tvOS 17.0' -define-availability 'SwiftStdlib 5.10:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999'  -typo-correction-limit 10   -disable-availability-checking -I /home/build-user/swift-corelibs-libdispatch -I /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64/src/swift/swift -L /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64 -vfsoverlay /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64/dispatch-vfs-overlay.yaml -warn-concurrency /home/build-user/swift/test/Concurrency/dispatch_inference.swift -emit-sil -o /dev/null -verify -strict-concurrency=targeted
: 'RUN: at line 3';   /home/build-user/build/buildbot_linux/swift-linux-x86_64/bin/swift-frontend -target x86_64-unknown-linux-gnu  -module-cache-path /home/build-user/build/buildbot_linux/swift-linux-x86_64/swift-test-results/x86_64-unknown-linux-gnu/clang-module-cache -swift-version 4  -define-availability 'SwiftStdlib 9999:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999' -define-availability 'SwiftStdlib 5.0:macOS 10.14.4, iOS 12.2, watchOS 5.2, tvOS 12.2' -define-availability 'SwiftStdlib 5.1:macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0' -define-availability 'SwiftStdlib 5.2:macOS 10.15.4, iOS 13.4, watchOS 6.2, tvOS 13.4' -define-availability 'SwiftStdlib 5.3:macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0' -define-availability 'SwiftStdlib 5.4:macOS 11.3, iOS 14.5, watchOS 7.4, tvOS 14.5' -define-availability 'SwiftStdlib 5.5:macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0' -define-availability 'SwiftStdlib 5.6:macOS 12.3, iOS 15.4, watchOS 8.5, tvOS 15.4' -define-availability 'SwiftStdlib 5.7:macOS 13.0, iOS 16.0, watchOS 9.0, tvOS 16.0' -define-availability 'SwiftStdlib 5.8:macOS 13.3, iOS 16.4, watchOS 9.4, tvOS 16.4' -define-availability 'SwiftStdlib 5.9:macOS 14.0, iOS 17.0, watchOS 10.0, tvOS 17.0' -define-availability 'SwiftStdlib 5.10:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999'  -typo-correction-limit 10   -disable-availability-checking -I /home/build-user/swift-corelibs-libdispatch -I /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64/src/swift/swift -L /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64 -vfsoverlay /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64/dispatch-vfs-overlay.yaml -warn-concurrency /home/build-user/swift/test/Concurrency/dispatch_inference.swift -emit-sil -o /dev/null -verify -strict-concurrency=complete
: 'RUN: at line 4';   /home/build-user/build/buildbot_linux/swift-linux-x86_64/bin/swift-frontend -target x86_64-unknown-linux-gnu  -module-cache-path /home/build-user/build/buildbot_linux/swift-linux-x86_64/swift-test-results/x86_64-unknown-linux-gnu/clang-module-cache -swift-version 4  -define-availability 'SwiftStdlib 9999:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999' -define-availability 'SwiftStdlib 5.0:macOS 10.14.4, iOS 12.2, watchOS 5.2, tvOS 12.2' -define-availability 'SwiftStdlib 5.1:macOS 10.15, iOS 13.0, watchOS 6.0, tvOS 13.0' -define-availability 'SwiftStdlib 5.2:macOS 10.15.4, iOS 13.4, watchOS 6.2, tvOS 13.4' -define-availability 'SwiftStdlib 5.3:macOS 11.0, iOS 14.0, watchOS 7.0, tvOS 14.0' -define-availability 'SwiftStdlib 5.4:macOS 11.3, iOS 14.5, watchOS 7.4, tvOS 14.5' -define-availability 'SwiftStdlib 5.5:macOS 12.0, iOS 15.0, watchOS 8.0, tvOS 15.0' -define-availability 'SwiftStdlib 5.6:macOS 12.3, iOS 15.4, watchOS 8.5, tvOS 15.4' -define-availability 'SwiftStdlib 5.7:macOS 13.0, iOS 16.0, watchOS 9.0, tvOS 16.0' -define-availability 'SwiftStdlib 5.8:macOS 13.3, iOS 16.4, watchOS 9.4, tvOS 16.4' -define-availability 'SwiftStdlib 5.9:macOS 14.0, iOS 17.0, watchOS 10.0, tvOS 17.0' -define-availability 'SwiftStdlib 5.10:macOS 9999, iOS 9999, watchOS 9999, tvOS 9999'  -typo-correction-limit 10   -disable-availability-checking -I /home/build-user/swift-corelibs-libdispatch -I /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64/src/swift/swift -L /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64 -vfsoverlay /home/build-user/build/buildbot_linux/libdispatch-linux-x86_64/dispatch-vfs-overlay.yaml -warn-concurrency /home/build-user/swift/test/Concurrency/dispatch_inference.swift -emit-sil -o /dev/null -verify -strict-concurrency=complete -enable-experimental-feature SendNonSendable
--
Exit Code: 1

Command Output (stderr):
--
/home/build-user/swift/test/Concurrency/dispatch_inference.swift:25:24: error: expected warning, not error
    x = 17 // expected-warning{{mutation of captured var 'x' in concurrently-executing code}}
                       ^~~~~~~
                       error
/home/build-user/swift/test/Concurrency/dispatch_inference.swift:33:24: error: expected warning, not error
    x = 17 // expected-warning{{mutation of captured var 'x' in concurrently-executing code}}
                       ^~~~~~~
                       error

--

********************

[shahmishal]

This started after switching the expected-error over to expected-warning to resolve test failure on macOS. Should this behave differently between macOS and Linux?

To unblock PR testing, going to disable the test for now.

[shahmishal]

cc: @hborla

[hborla]

This is because DispatchQueue.async is missing a @Sendable annotation on the closure parameter in swift-corelibs-dispatch: https://github.com/apple/swift-corelibs-libdispatch/blob/main/src/swift/Queue.swift#L256