On Thu, Jan 14, 2021 at 12:28:57PM +0100, Manuel Bouyer wrote: > Does the standard explicitely state that the value should either be > EOF or >= 0 ?
Yes, Section 7.4 paragrah 1 second sentence (ISO C 2018): > In all cases the argument is an int, the value of which shall be > representable as an unsigned char or shall equal the value of the > macro EOF. If the argument has any other value, the behavior is > undefined. Martin