Re: [PATCH v5] net: ip, diag -- Add diag interface for raw sockets

On Wed, Sep 28, 2016 at 06:29:08AM -0700, Eric Dumazet wrote:

quoted

Oh, crap :( I've been looking into uapi headers, found that we
use anonymous unions (for example include/uapi/linux/bcache.h)
and thought it will be safe (and my test builds didn't fail).
Are you happen to know which gcc versions cant do that?

The most recent example I have in mind is a kbuild bot report on the
recent TCP BBR patches. We had to rework the patch to avoid the problem.

If I remember well, this was a gcc-4.7, but not on x86.

4.7 is pretty widespread, so I've to think...