Mike Ash 2abf087e71 [Concurrency] Emit a distinct mangling for checked ObjC async completion handlers. ...

This avoids coalescing checked and unchecked handlers with the same types, which results in runtime crashes as they are not compatible.

We have a separate mangling for predefined handlers, TZ, which is unused. Repurpose this for checked handlers. Unchecked handlers keep their existing mangling with Tz.

rdar://152263818

2026-02-06 17:45:43 -05:00

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