[clang] [llvm] [clang][modules] Prevent deadlock in module cache (PR #182722)

[Cyndy Ishida via llvm-commits]

cyndyishida wrote:

> Is there a new push to use radr links more consistently or was this a one-off request?

The latter, I suppose.  There's improved release management automation downstream, but no specific push to increase the presence of rdar links. Tracking changes to our downstream release is the biggest reason I add it, and would encourage others to do so when it's applicable.

> so we don't end up in a bad place again by accident.

👍 

https://github.com/llvm/llvm-project/pull/182722