Upstreaming the glibc Hurd port

[Samuel Thibault]

Joseph Myers, le mar. 03 avril 2018 00:10:30 +0000, a ecrit:
> On Mon, 2 Apr 2018, Samuel Thibault wrote:
> > Others really pose problem, like ./sysdeps/mach/hurd/bits/fcntl.h's
> > l_type/l_whence being int instead of short.
> 
> Where something is problematic to fix, because a fix would break the ABI 
> or needs some external feature, there is an xfail mechanism internal to 
> the conform tests.

Ok, thanks for the info, I could work it out :)

There are some ABI-compatible changes which can be made.  One of them is
struct shmid_ds's shm_segsz which is int but should be size_t.  That is
defined as int in both ./sysvipc/sys/shm.h and ./sysdeps/gnu/bits/shm.h.
I have checked that the kfreebsd port uses its own shm.h that defines it
to size_t.  I'd tend to think that we do not have any 64bit port using
./sysvipc/sys/shm.h or ./sysdeps/gnu/bits/shm.h, and thus we can just
fix them into size_t since on 32bit ports it is ABI-compatible with int?
(except the bitness, but I guess it does not problems in practice?)

Samuel