On Mon, 24 Jan 2022, Christoph Hellwig wrote:
Fix a user API regression introduced with commit f76edd8f7ce0 ("tty: cyclades, remove this orphan"), which removed a part of the API and caused compilation errors for user programs using said part, such as GCC 9 in its libsanitizer component[1]:
This looks sensible, but a #warning might be useful to get people to stop including this random header.
We have no precedent, but your suggestion seems reasonable to me, thanks.
Maciej