# \#isolation **URL:** https://forums.swift.org/tag/isolation/1088.md [Latest](https://forums.swift.org/latest.md) · [Categories](https://forums.swift.org/categories.md) · [Tags](https://forums.swift.org/tags.md) --- ## [Airlock](https://forums.swift.org/t/airlock/87737)
**Author:** [@MaksymKotliar](https://forums.swift.org/u/MaksymKotliar)\ **Replies:** 3\ **Last updated:** [June 29, 2026, 5:21pm UTC](https://forums.swift.org/t/airlock/87737 "2026-06-29T17:21:28Z")
About Airlock Project page: GitHub - MaximKotliar/Airlock: macOS fork-based process isolation for Swift · GitHub There's no try you can wrap around a segfault. When a parser walks off the end of an attacker-controlled b… --- ## [Isolated closures and @concurrent functions](https://forums.swift.org/t/isolated-closures-and-concurrent-functions/86614)
**Author:** [@NotTheNHK](https://forums.swift.org/u/NotTheNHK)\ **Replies:** 12\ **Last updated:** [May 13, 2026, 10:16am UTC](https://forums.swift.org/t/isolated-closures-and-concurrent-functions/86614 "2026-05-13T10:16:25Z")
Recently, I had isolated closures in mind and how they interact with non-isolated asynchronous functions (@concurrent), and found that the compiler naively determines that sending the closure (value) to a different isola… --- ## [Synthesized Bundle.module is not usable in nonisolated code in packages with MainActor default isolation](https://forums.swift.org/t/synthesized-bundle-module-is-not-usable-in-nonisolated-code-in-packages-with-mainactor-default-isolation/84416)
**Author:** [@marco.masser](https://forums.swift.org/u/marco.masser)\ **Replies:** 10\ **Last updated:** [March 31, 2026, 1:14pm UTC](https://forums.swift.org/t/synthesized-bundle-module-is-not-usable-in-nonisolated-code-in-packages-with-mainactor-default-isolation/84416 "2026-03-31T13:14:47Z")
I have a Swift package where the Package.swift file defines .defaultIsolation(MainActor.self) for my library target because it mostly contains view-level code. The Bundle.module that is automatically synthesized by SPM i… --- ## [Allow closure to be statically isolated to a weakly captured actor](https://forums.swift.org/t/allow-closure-to-be-statically-isolated-to-a-weakly-captured-actor/85451)
**Author:** [@jeremyabannister](https://forums.swift.org/u/jeremyabannister)\ **Replies:** 15\ **Last updated:** [March 25, 2026, 12:40am UTC](https://forums.swift.org/t/allow-closure-to-be-statically-isolated-to-a-weakly-captured-actor/85451 "2026-03-25T00:40:53Z")
Right now, you can write an API that allows an actor to call it and pass in a closure that is statically isolated to the calling actor: final class Foo { func onWrite(\_ callback: @escaping () async -\> ()) { … --- ## [Inference of isolated conformances](https://forums.swift.org/t/inference-of-isolated-conformances/84468)
**Author:** [@Nickolas\_Pohilets](https://forums.swift.org/u/Nickolas_Pohilets)\ **Replies:** 4\ **Last updated:** [January 30, 2026, 5:27pm UTC](https://forums.swift.org/t/inference-of-isolated-conformances/84468 "2026-01-30T17:27:01Z")
The following code works fine without InferIsolatedConformances (with all conformances being nonisolated), but breaks under InferIsolatedConformances (S: P and S: R are inferred as isolated, but S: Q as nonisolated). pr… --- ## [Difference between \`nonisolated(nonsending)\` function and \`isolation: isolated (any Actor)? = #isolation\` parameter](https://forums.swift.org/t/difference-between-nonisolated-nonsending-function-and-isolation-isolated-any-actor-isolation-parameter/83722)
**Author:** [@alessionossa](https://forums.swift.org/u/alessionossa)\ **Replies:** 1\ **Last updated:** [December 16, 2025, 11:20am UTC](https://forums.swift.org/t/difference-between-nonisolated-nonsending-function-and-isolation-isolated-any-actor-isolation-parameter/83722 "2025-12-16T11:20:50Z")
SE-0420 - Inheritance of actor isolation introduces the possibility of inherit actor isolation of he caller with the syntax func foo(isolation: isolated (any Actor)? = #isolation) async while SE-0461 - Run nonisolated … --- ## [\[Pitch\] Improve diagnostic when attempting to send "task-isolated" value](https://forums.swift.org/t/pitch-improve-diagnostic-when-attempting-to-send-task-isolated-value/82915)
**Author:** [@jeremyabannister](https://forums.swift.org/u/jeremyabannister)\ **Replies:** 3\ **Last updated:** [November 5, 2025, 2:32am UTC](https://forums.swift.org/t/pitch-improve-diagnostic-when-attempting-to-send-task-isolated-value/82915 "2025-11-05T02:32:08Z")
It can be very surprising when code which was previously compiling is suddenly failing with an error like: Task-isolated 'foo' is passed as a 'sending' parameter; Uses in callee may race with later task-isolated uses o… --- ## [\`#isolation\` not providing the correct Actor in closures when NonisolatedNonsendingByDefault is enabled?](https://forums.swift.org/t/isolation-not-providing-the-correct-actor-in-closures-when-nonisolatednonsendingbydefault-is-enabled/81924)
**Author:** [@Serika\_PHB](https://forums.swift.org/u/Serika_PHB)\ **Replies:** 3\ **Last updated:** [September 9, 2025, 2:05pm UTC](https://forums.swift.org/t/isolation-not-providing-the-correct-actor-in-closures-when-nonisolatednonsendingbydefault-is-enabled/81924 "2025-09-09T14:05:11Z")
In the following example, with NonisolatedNonsendingByDefault enabled, the closure passed to a.test() should be executed on actor a. The code does pass the a.assertIsolated() assertion successfully. However, when I try t… --- ## [A few @isolated(any) function conversion questions](https://forums.swift.org/t/a-few-isolated-any-function-conversion-questions/79279)
**Author:** [@jamieQ](https://forums.swift.org/u/jamieQ)\ **Replies:** 1\ **Last updated:** [May 2, 2025, 12:16am UTC](https://forums.swift.org/t/a-few-isolated-any-function-conversion-questions/79279 "2025-05-02T00:16:42Z")
inspired by the discussion surfaced here, i wanted to highlight some of the specific language regarding @isolated(any) function conversions from the relevant evolution document. focusing on the third bullet point from th… --- ## [Closure Isolation Inheritance Issues](https://forums.swift.org/t/closure-isolation-inheritance-issues/78703)
**Author:** [@eli](https://forums.swift.org/u/eli)\ **Replies:** 0\ **Last updated:** [March 21, 2025, 12:19am UTC](https://forums.swift.org/t/closure-isolation-inheritance-issues/78703 "2025-03-21T00:19:35Z")
Hello, Im trying to create a Queue, which allows me to synchronise execution despite having a reentry point. Doing the above I ran into few problems. Basically I have a simple actor public typealias RoutingQueueOperat… --- ## [PostgresKit: No way to set transaction Isolation level?](https://forums.swift.org/t/postgreskit-no-way-to-set-transaction-isolation-level/78033)
**Author:** [@kwiky](https://forums.swift.org/u/kwiky)\ **Replies:** 0\ **Last updated:** [February 22, 2025, 3:31pm UTC](https://forums.swift.org/t/postgreskit-no-way-to-set-transaction-isolation-level/78033 "2025-02-22T15:31:35Z")
I’ve browsed the PostgresKit documentation and haven’t found any built-in API that lets you directly set the transaction isolation level. I’ve looked for a transaction method with an isolation parameter—something like tr…