[libc-commits] [libc] [libc] Add getc, ungetc, fflush to enable libc++ iostream on baremetal (PR #175530)

[Volodymyr Turanskyy via libc-commits]

voltur01 wrote:

> Would it be possible to split this PR into two? First one for `getc` and `fflush` which can be merged right away.

Probably yes, however these two on their own do not unblock iostream use case, so may as well wait.

https://github.com/llvm/llvm-project/pull/175530