[PATCH] Linux: Define struct termios2 in <termios.h> under _GNU_SOURCE [BZ #10339]

[Florian Weimer]

* Florian Weimer:

> My gut feeling is that it's safer to add new interfaces, based on the
> actual kernel/userspace interface, rather than trying to fix up existing
> interfaces with symbol versioning.  The main reason is that code
> involving serial interfaces is difficult to test, so it will take years
> until we find the last application broken by the glibc interface bump.
>
> I don't feel strongly about this.  This came out of a request for
> enabling TCGETS2 support downstream.  If I can't fix this upstream, I
> will just reject that request.

Any further comments on this matter?

Thanks,
Florian