[compiler-rt] [RTSan][Apple] Disable AccessingALargeAtomicVariableDiesWhenRealtime (PR #129309)

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davidtrevelyan wrote:

> > Let me know what you think. I'm not sure whether this solution is particularly sustainable - what if the Darwin implementation switches to a different locking mechanism in future, for example? I guess that's perhaps just something we have to deal with. Anyway, I'm keen to hear your thoughts.
> 
> This matches my observations and concerns.

Great. Glad we're on the same page. Concerns-wise, I haven't got any smart ideas at the moment. But I have put together this PR to hopefully get your CI green again: https://github.com/llvm/llvm-project/pull/131034 - let me know what you think, and please invite any other reviewers you feel would be helpful. Hopefully this should unblock your work and we can formulate a plan for making this interception more stable going forwards later?

https://github.com/llvm/llvm-project/pull/129309