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

[Aaron Ballman via cfe-commits]

AaronBallman 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.
> 
> 👍

Good to know, thank you! :-)

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