On 2023-05-21 14:50, Tomasz Kłoczko wrote:
> test-strtoll.c:290: assertion 'ptr == input + 1' failed

I don't have that problem when I run the tests on Fedora 38 x86-64. What 
platform are you using, and how did you configure it?

I do see a potential on the Gnulib side, which I attempted to fix by 
installing the attached (and I'll cc bug-gnulib).

This is a Gnulib issue not a diffutils issue per se, so I wouldn't worry 
about it as far as diffutils go.