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[AVFoundation] Fix AVAudioSession.EndInterruption event unsubscription - #26326

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rolfbjarne merged 1 commit into
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Jul 28, 2026
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[AVFoundation] Fix AVAudioSession.EndInterruption event unsubscription#26326
rolfbjarne merged 1 commit into
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dev/rolf/jubilant-happiness

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The remove accessor for AVAudioSession.EndInterruption incorrectly
detached cbBeginInterruption instead of cbEndInterruption. As a result:

  • Handlers subscribed to EndInterruption were never actually removed.
  • Handlers subscribed to BeginInterruption could be removed unexpectedly.

Changed the remove accessor to detach cbEndInterruption.

I also scanned the entire src/ tree for any other event where the add
and remove accessors reference mismatched backing fields, and found no
other occurrences — this was the only one.

🤖 Pull request created by Copilot

…n removing the wrong delegate

The `remove` accessor for `AVAudioSession.EndInterruption` incorrectly
detached `cbBeginInterruption` instead of `cbEndInterruption`. This meant
`EndInterruption` handlers were never removed, and `BeginInterruption`
handlers could be removed unexpectedly.

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
@rolfbjarne
rolfbjarne marked this pull request as ready for review July 28, 2026 12:02
@rolfbjarne
rolfbjarne requested a review from dalexsoto as a code owner July 28, 2026 12:02
Copilot AI review requested due to automatic review settings July 28, 2026 12:02
@rolfbjarne rolfbjarne added the ready-to-review This PR is ready to review/merge. label Jul 28, 2026

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Pull request overview

Fixes an event unsubscription bug in the AVFoundation binding where AVAudioSession.EndInterruption’s remove accessor detached the wrong callback field, preventing handlers from being removed correctly and potentially removing BeginInterruption handlers unexpectedly.

Changes:

  • Correct AVAudioSession.EndInterruption’s remove accessor to unsubscribe from cbEndInterruption (matching the add accessor).

@rolfbjarne
rolfbjarne enabled auto-merge (squash) July 28, 2026 12:09
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Hash: 01f2a3aacee5e3210a5e392c84de09c53fba0c9a [PR build]

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🚀 [CI Build #01f2a3a] Test results 🚀

Test results

✅ All tests passed on VSTS: test results.

🎉 All 203 tests passed 🎉

Tests counts

✅ assembly-processing: All 1 tests passed. Html Report (VSDrops) Download
✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (iOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (MacCatalyst): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (macOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (Multiple platforms): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (tvOS): All 1 tests passed. Html Report (VSDrops) Download
✅ framework: All 2 tests passed. Html Report (VSDrops) Download
✅ fsharp: All 4 tests passed. Html Report (VSDrops) Download
✅ generator: All 5 tests passed. Html Report (VSDrops) Download
✅ interdependent-binding-projects: All 4 tests passed. Html Report (VSDrops) Download
✅ introspection: All 4 tests passed. Html Report (VSDrops) Download
✅ linker (iOS): All 15 tests passed. Html Report (VSDrops) Download
✅ linker (MacCatalyst): All 15 tests passed. Html Report (VSDrops) Download
✅ linker (macOS): All 21 tests passed. Html Report (VSDrops) Download
✅ linker (tvOS): All 15 tests passed. Html Report (VSDrops) Download
✅ monotouch (iOS): All 19 tests passed. Html Report (VSDrops) Download
✅ monotouch (MacCatalyst): All 18 tests passed. Html Report (VSDrops) Download
✅ monotouch (macOS): All 19 tests passed. Html Report (VSDrops) Download
✅ monotouch (tvOS): All 19 tests passed. Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. Html Report (VSDrops) Download
✅ sharpie: All 1 tests passed. Html Report (VSDrops) Download
✅ windows: All 3 tests passed. Html Report (VSDrops) Download
✅ xcframework: All 4 tests passed. Html Report (VSDrops) Download
✅ xtro: All 1 tests passed. Html Report (VSDrops) Download

macOS tests

✅ Tests on macOS Monterey (12): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Ventura (13): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Sonoma (14): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Sequoia (15): All 5 tests passed. Html Report (VSDrops) Download
✅ Tests on macOS Tahoe (26): All 5 tests passed. Html Report (VSDrops) Download

Linux Build Verification

Linux build succeeded

Pipeline on Agent
Hash: 01f2a3aacee5e3210a5e392c84de09c53fba0c9a [PR build]

@rolfbjarne
rolfbjarne merged commit b06d011 into main Jul 28, 2026
57 checks passed
@rolfbjarne
rolfbjarne deleted the dev/rolf/jubilant-happiness branch July 28, 2026 14:34
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