[libc-commits] [libc] [libc] Implement perror (PR #143624)

[Joseph Huber via libc-commits]

https://github.com/jhuber6 approved this pull request.

Well, the GPU doesn't use the file interface so it won't work. Would be easiest to just call `flockfile` but we don't want that kind of latency. Would probably just be easiest to write this special for the GPU (it's literally just puts for stderr.)

https://github.com/llvm/llvm-project/pull/143624