[PATCH] Change INTERNAL_SYSCALL* so that it supports both arches which have error embedded in retval and arches which signal error otherwise

[Ulrich Drepper]

Roland McGrath wrote:

> I guess this is ok, but a little bulky.  If it's always `int err' and
> nonzero to indicate, on x86 that's something like "err = retval < 0 ?
> -retval : 0;".  Does the compiler really fail to eliminate all that work if
> `err' is dead?

I don't think it's "bulky" and I definitely don't want to take the
chance that gcc misses to optimize some variable out.

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