Who contributed to Mobile platforms on August 26, 2026?

11 developers shipped this update, including Chris Bracken, Daco Harkes, engine-flutter-autoroll, gaaclarke, susmonteiro, eeckstein, DougGregor, and Anthony Latsis, and 3 more.

What were the notable Mobile platforms updates?

OSSA RAUW: don't drop the `[dead_end]` flag when compensating a deleted consume, iOS: Add null check for touch rate correction task runner (#191641), and [Embedded] Limit additional specialization of deinits to only those needed for metadata.

Mobile platforms

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The Wire · Showcase

Swift fixes a silent miscompile in OSSA ownership, Flutter patches a ProMotion crash

By RepoJournal · Filed 07:01 UTC on August 26, 2026 · About Mobile platforms

11 people shipped this

Chris Bracken @cbracken 2 cited

DougGregor @DougGregor 2 cited

engine-flutter-autoroll @engine-flutter-autoroll 1 cited

susmonteiro @susmonteiro 1 cited

eeckstein @eeckstein 1 cited

Adam Semenenko @adam-enko 1 cited

Denis.Zharkov @dzharkov 1 cited

Alexander Udalov @udalov 1 cited

Daco Harkes @dcharkes

gaaclarke @gaaclarke

Anthony Latsis @AnthonyLatsis

A Swift compiler bug that could corrupt objects at deinit and a Flutter crash on ProMotion displays both shipped fixes overnight.

Swift's OSSA ownership fix [1] eliminates a miscompile where a `[dead_end]` destroy flag was dropped, potentially running deinitializers on partially initialized objects. The same Swift team tightened deinit specialization for embedded targets [3], cutting unnecessary specializations, then built on it to improve deinit devirtualization for move-only existentials [4]. On the Flutter side, a null check [2] prevents a dereference of a nil task runner when a view controller's engine is gone, addressing ProMotion touch-rate issues. Flutter also added test coverage for `engineAllowHeadlessExecution` [5], and the packages roll brings 17 revisions including cleanup of unused constructor parameters [6]. Kotlin expanded its isolated projects workaround for JS Gradle builds [7] and updated six MCP tool names from those in IDEA 2026.2.1 [8]. The CXX interop team implemented libkern ownership conventions, marking getters as +0 and others +1 [9]. Kotlin's inference changes continue: second-kind incorporation restrictions are now reflected in test expectations [10]. The wire covers 114 commits and 62 PRs across these three repos.

Action items

→ Update Swift compiler if you use OSSA ownership or run embedded targets to avoid the deinit miscompile apple/swift [immediate]
→ Apply the Flutter engine patch if your app hits the ProMotion touch-rate crash flutter/flutter [immediate]
→ Monitor Kotlin's second-kind incorporation restriction changes if you rely on complex type inference JetBrains/kotlin [plan]

References

[1] OSSA RAUW: don't drop the `[dead_end]` flag when compensating a deleted consume ↗ apple/swift
[2] iOS: Add null check for touch rate correction task runner (#191641) flutter/flutter
[3] [Embedded] Limit additional specialization of deinits to only those needed for metadata ↗ apple/swift
[4] [Embedded] Improvements to deinit devirtualization ↗ apple/swift
[5] iOS: Add test for engineAllowHeadlessExecution (#191635) flutter/flutter
[6] Roll Packages from df2ba94faea6 to 740f09361ccc (17 revisions) (#191734) flutter/flutter
[7] [Gradle] Use internal workaround for prototyping isolated project support in JS in more places JetBrains/kotlin
[8] AI: update JetBrains MCP tool names for IDEA 2026.2.1 JetBrains/kotlin
[9] [cxx-interop] Apply libkern's return ownership conventions ↗ apple/swift
[10] [Tests] Update test data after restricting second-kind incorporation JetBrains/kotlin

Quick answers

What shipped in Mobile platforms on August 26, 2026?: A Swift compiler bug that could corrupt objects at deinit and a Flutter crash on ProMotion displays both shipped fixes overnight. In total, 114 commits and 62 pull requests landed.
Who contributed to Mobile platforms on August 26, 2026?: 11 developers shipped this update, including Chris Bracken, Daco Harkes, engine-flutter-autoroll, gaaclarke, susmonteiro, eeckstein, DougGregor, and Anthony Latsis, and 3 more.
What were the notable Mobile platforms updates?: OSSA RAUW: don't drop the `[dead_end]` flag when compensating a deleted consume, iOS: Add null check for touch rate correction task runner (#191641), and [Embedded] Limit additional specialization of deinits to only those needed for metadata.

Flutter Ships Release-Mode Route Injection as Swift and Kotlin Rush to Harden Compilers

Flutter's release-mode route injection fixes a long-standing Android gap, while Swift and Kotlin land compiler stability fixes that will save you from cryptic crashes.

mobile 144 shipped

Mobile platforms Aug 24

FLUTTER STUMBLES ON LINUX POPUPS AS SWIFT AND KOTLIN PUSH FORWARD

Flutter's Linux popup and tooltip positioning fix is back to square one, while Swift locks down move-only deinit crashers and Kotlin cleans house.

mobile 26 shipped

Mobile platforms Aug 23

Swift Kills PlatformKind::none, Flutter Rolls ICU

Swift's AST just deleted a footgun that has been a "common source of bugs" [ref:6], while Flutter quietly pulled in a new ICU revision [ref:3].

mobile 12 shipped

Mobile platforms Aug 22

SWIFT FIXES CRASH ON NON-COPYABLE EXISTENTIALS

A Swift compiler crash that hit local non-copyable existentials is patched, and the fix clears the way for broader adoption of move-only types.

mobile 116 shipped

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