fix(coreaudio): declare aggregate_device_id as mut and check AudioHardwareCreateProcessTap status#1123
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roderickvd merged 3 commits intoRustAudio:masterfrom Mar 16, 2026
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I was using cpal 0.17.3 for loopback recording on macOS and getting
The requested device is no longer availablein release builds.Two bugs in
loopback.rs:aggregate_device_idwas not declaredmut— UB when the compiler optimizes away the write in release mode, leaving the device ID as 0.AudioHardwareCreateProcessTapstatus was ignored — silent failure leads to invalid tap ID.Fixed by adding
muttoaggregate_device_id, usingNonNull::from(&mut aggregate_device_id), and propagating the tap creation status viacheck_os_status.Related