On Mon, Nov 1, 2021 at 4:02 PM Paul Eggert <[email protected]> wrote: > > On 10/21/21 12:38, Paweł Krawczyk wrote: > > > gl_array_list.c:452:29: runtime error: applying zero offset to null pointer > > SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior > > gl_array_list.c:452:29 in > > The Gnulib portability assumptions > <https://www.gnu.org/software/gnulib/manual/html_node/Other-portability-assumptions.html> > say it's OK to add 0 to a null pointer. If you have a real platform > (i.e., not a pedantic testing framework) where this is an issue, please > let us know. Otherwise you might look into some way to have clang not > nag you about this non-problem.
I believe that's undefined behavior. NULL is not a valid object. I think the tools are correct in producing a finding. https://stackoverflow.com/questions/26906621 Jeff
