Upstreaming the glibc Hurd port

[Samuel Thibault]

Joseph Myers, on mar. 03 avril 2018 21:48:32 +0000, wrote:
> The build for i686-gnu also fails using GCC 6 branch with 
> build-many-glibcs.py:
> 
> hurdsig.c: In function 'interrupted_reply_port_location.isra.1':
> hurdsig.c:250:39: error: 'portloc' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>    *(volatile mach_port_t *) portloc = *portloc;
>                                        ^~~~~~~~
> 
> I haven't investigated whether this warning is valid, or whether it's 
> bogus

Well, it's completely bogus: portloc is initialized just above. I don't
understand why it wouldn't see that.

Samuel