On Thu, Nov 26, 2015 at 02:56:30PM +0100, Hannes Frederic Sowa wrote:
> > +#define DECLARE_NLREQ(name, hdrname, payload, tailroom)
> > \
> > + struct { \
> > + struct nlmsghdr hdrname; \
> > + payload; \
> > + char __b[tailroom] __attribute__((aligned(NLMSG_ALIGNTO))); \
> > + } name = { .hdrname = { \
> > + .nlmsg_len = (unsigned long)&name.__b - (unsigned long)&name, \
>
> offsetof(typeof(name), __b) ?
Ah, thanks! I already considered offsetof(), but the fact it needs a
type name and the declared struct is anonymous appeared unsolvable to
me. Good to know typeof() can be used this way!
Thanks, Phil
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