[Bug go/81393] Bootstrap failure on s390x-linux while building libgo against recent glibc

[ian at airs dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81393

--- Comment #9 from Ian Lance Taylor <ian at airs dot com> ---
Created attachment 41791
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41791&action=edit
Possible patch

I agree that the simplest approach is to not try to pick up the definitions
from the header files for the older branches, but to just write them directly. 
I don't have a way to test a patch; can you see if this one works?