7239bb7b3d
'man termios' says: "A read(2) returns at most one line of input" in canonical mode. On cygwin 2.5.1, read(2) returns all data in buffer if the buffer size specified is large enough. This behaviour is correct in noncanonical mode, but is not correct in canonical mode. While checking this problem, I found a bug of tcflush(). tcflush() flushes only partial data in the buffer. The patch also fixes this bug. The patch has also been tested against the problem reported in https://cygwin.com/ml/cygwin/2016-05/msg00318.html. Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cygwin documentation is available on the net at https://cygwin.com You might especially be interested in https://cygwin.com/faq/faq.html#faq.programming.building-cygwin