On Thu, May 07, 2020 at 03:15:22PM +0200, Tomas Mraz wrote: > > Actually the coincidence is that the errno is set to 0 on EOF. So yes, > we should explicitly clear the errno on EOF so any leftover value from > previous calls does not affect this.
On EOF, errno is normally not modified. It's value is not defined if no error is returned. It is not guaranteed to be 0 on success or EOF. It can be modified, because the implementation might have done other system calls that did return an error. But a simple test shows that it's not modified on my system. Kurt
