Sorry if this is already known: on a RH 7.0 system with kernel 2.4.2
or 2.4.3, a select on an unconnected socket incorrectly says that the
socket is ready for input and output. Of course, reading from the socket
file descriptor returns -1 and errno is set to ENOTCONN as shown in
the strace output:

socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
select(4, [3], [3], [3], {0, 0})        = 2 (in [3], out [3], left {0, 0})
read(3, 0xbffff668, 1024)               = -1 ENOTCONN (Transport endpoint is not connected)

I attached a small example program to reproduce the bug.


Thanks,
Radu Greab

PS: please CC me your eventual replies as I'm not subscribed to the
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