Not surprised.

This isn't surprising to me. The glibc people have had a reputation for being giant dicks at least since 2010 as far as my memory serves.

If it's mandated by SysV ABI, it needs to be put back. The fact it's mandated by SysV ABI probably explains why EAC thought they could rely on it being there, even more so than the GNU version. It's not hurting anything to leave it there, so why remove it at all if it's going to break specs and cause anger like this?

Then again, I find some of the developers for projects like glibc just like making inexplicable executive decisions that everyone else who uses their code just has to bend over and take.