[s390] Build failure with gcc 4.9.2 in rawhide

[Andreas Krebbel]

Hi Siddhesh,

On 01/23/2015 08:43 AM, Siddhesh Poyarekar wrote:
> Hi Andreas,
> 
> We encountered a build failure in rawhide for s390x due to -Werror:
> 
> http://s390.koji.fedoraproject.org/koji/getfile?taskID=1705688&name=build.log&offset=-24000
> 
> I was able to narrow it to a small reproducer and have filed it as a
> bug in gcc:
> 
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64739
> 
> I have unbroken the build temporarily in Fedora by disabling werror
> for s390x.  Could you please have this patched in glibc before the
> release?

the difference between S/390 and common code (gconv_simple.c) appears to be that we define
STORE_REST and gconv_simple.c doesn't. This triggers the GCC bug. Your reduced testcase fails on x86
as well. When I replace the !STORE_REST code in gconv_simple.c with the STORE_REST code from loop.c
I get the same error message on x86. So to my understanding there is nothing to do apart from fixing
GCC - right?!

-Andreas-