[En-Nut-Discussion] Bug in fgetc

Ralph Mason ralph.mason at telogis.com
Sat Apr 12 03:08:30 CEST 2003

fgetc currently reads a char from the stream, this means that when the char
0xff is promoted to an in it returns -1 (EOF), the correct result is 0xFF

Below is an update.


int fgetc(FILE * stream)
    u_char ch;

    if (stream->iob_flags & _IOUNG) {
        stream->iob_flags &= ~_IOUNG;
        return stream->iob_unget;
    if (_read(stream->iob_fd, &ch, 1) != 1)
        return EOF;

    return (int) ch;
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