Hi Alejandro, if in caller it is known that endptr has access mode "write_only" then it can conclude that the content of *endptr has access mode "none", couldn't it? You also need to discuss backwards compatibility. Changing the type of those functions can break valid programs. You would need to make a case that this is unlikely to affect any real world program. Martin Am Sonntag, dem 07.07.2024 um 03:58 +0200 schrieb Alejandro Colomar: > Hi, > > I've incorporated feedback, and here's a new revision, let's call it > v0.2, of the draft for a WG14 paper. I've attached the man(7) source, > and the generated PDF. > > Cheers, > Alex > >