https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107781
David Edelsohn <dje at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |dje at gcc dot gnu.org --- Comment #3 from David Edelsohn <dje at gcc dot gnu.org> --- AIX as well. Although, apparently strchrnul() is provided a z/OS extension, so, hey, you can build it there too! :-P.