[lwip-devel] [bug #29332] lwip_select() processes readset incorrectly

[Petr Cernin]

URL:
  <http://savannah.nongnu.org/bugs/?29332>

                 Summary: lwip_select() processes readset incorrectly
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: cerninp
            Submitted on: Thu 25 Mar 2010 10:31:03 AM GMT
                Category: sockets
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: CVS Head

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Details:

in function lwip_selscan() in sockets.c(line 1001):

the following condition in IF statement is incorrect,  parenthesis are
missing:

There is:

if (readset_in && FD_ISSET(i, readset_in) && (lastdata != NULL) || (rcvevent
> 0)) {
   ...
}

There should be:

if (readset_in && FD_ISSET(i, readset_in) && ((lastdata != NULL) || (rcvevent
> 0))) {
   ...
}






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