Hi Guix!

I'm trying out the core-updates branch on aarch64, and gdb@11 doesn't
build with the new glibc, see: https://sourceware.org/bugzilla/show_bug.cgi?id=28302

Luckily, the patch was backported to 11.2, so it's a trivial fix! Is
this OK to commit? It'll be a big rebuild, I guess it could be bundled
with other fixes.

Thanks,
Pierre