According to your suggestion, we have added patch for m4 package.
You can also refer to the released Gnulib project（[1]).
If you have any questions, you can contact me at any time.
[1]:
https://git.savannah.gnu.org/gitweb/?p=gnulib.git&a=search&h=HEAD&st=commit&s=loongarch
Hi. I've applied the suggested patch.
I have still to update diffutils, but the bug report is not very clear:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1029275
Am I right to think that the same three code changes which
we have just applied for m4 are desired/required for diffutils?
Thanks.
