On Sat, May 13, 2023 at 05:41:03PM +0200, Andreas Schwab wrote:
> 
> https://build.opensuse.org/package/show/home:Andreas_Schwab:Factory/grep

confirmed the diffutils (version 3.9) in that version of openSUSE, is
affected (both diff and cmp) by the Y2K38 bug[1], but grep is not.

attached v3 would workaround the diffutils bug in the test, and show that
grep is working.

Carlo

[1] https://debbugs.gnu.org/cgi/bugreport.cgi?bug=63492