[libcxx-commits] [libcxx] [libc++] fix minor performance issue in `basic_string<C>::append()` (PR #210078)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

Given that the only case where you see a difference is in a completely artificial and unrealistic scenario I'm not convinced we want to take this. Do you have anything that's more likely to actually exist where this makes a difference?

https://github.com/llvm/llvm-project/pull/210078