Re: gl_array_list.c:452:29: runtime error: applying zero offset to null pointer

[Paul Eggert]

On 11/1/21 17:46, Jeffrey Walton wrote:
> I believe that's undefined behavior.

Yes, of course it is. But the Gnulib code works on all practical 
platforms, so it's OK. Gnulib is a practical project not a theoretical 
one, and it uses undefined behavior in several ways other than this one. 
As long as the code works on real systems there's no real problem.

Most likely Paweł can configure his testing environment to suppress 
these false alarms. If not, I suggest firing off a bug report to the 
Clang developers, asking for an easy way to suppress them. In practice 
these particular diagnostics are more trouble than they're worth.