On Fri, Jul 26, 2024 at 01:05:09PM -0700, Alan Coopersmith wrote: > Yes, this came up in the discussion to add asprintf() to POSIX in > https://austingroupbugs.net/view.php?id=1496 : > > >Of the above listed implementations, all but GNU libc document that they > >will > >set *ptr to NULL on error, while GNU libc explicitly states that you cannot > >rely on it to do so (and looking at its code, sometimes it does, sometimes > >it doesn't). > > and so the standard was written to allow both ways to be conformant. > > If GNU libc was willing to change that, perhaps the next version of the > standard could as well.
I didn't know you contributed to getting this standardized. Thank you! I think glibc should change, but the standard should merely strongly encourage libc's to implement the safer behavior. It shouldn't guarantee it because older glibc systems will remain in use. Alexander
