[lwip-devel] [bug #34733] Null poiter exception with SOCKET_DEBUG.

[Boberek]

URL:
  <http://savannah.nongnu.org/bugs/?34733>

                 Summary: Null poiter exception with SOCKET_DEBUG.
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: bober
            Submitted on: Thu 03 Nov 2011 11:13:23 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:

I am debugging stack with defined  SOCKET_DEBUG.
In line 761-762 occur null pointer exception.
>  if (*fromlen > saddr.sa.sa_len) {
>          *fromlen = saddr.sa.sa_len;
The reason is line 739:
>#if !SOCKETS_DEBUG
>      if (from && fromlen)
>#endif /* !SOCKETS_DEBUG */

Maybe add line 
>  if (from && fromlen)
before lines:
>  if (*fromlen > saddr.sa.sa_len) {
>          *fromlen = saddr.sa.sa_len;
>  }
>  MEMCPY(from, &saddr, *fromlen);





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