[compiler-rt] [scudo] Add flags to secondary cache entries. (PR #177506)

[Christopher Ferris via llvm-commits]

cferris1000 wrote:

> I think we can also mark the cache entry status in getStats(). It's fine to do it in a different CL

That's a good idea, and I'll do that in a follow-up.

https://github.com/llvm/llvm-project/pull/177506