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Message-ID:	<003101c17455$d9a3d700$0101a8c0@intelix.com>
From:	"Joe Hagen" <jdhagen AT chorus DOT net>
To:	<cygwin AT cygwin DOT com>
Subject:	1.3.5 access violation at 61013ED4 (net.cc)
Date:	Fri, 23 Nov 2001 13:34:15 -0600
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Using the fetchmail program under NT4, the
subject access violation occurred.

Disassembly of the code revealed that it was
in the "is_nonblocking()" method of an "fhandler_socket"
object.

In net.cc, there are unchecked results from an assignment
to an fhandler_socket* from cygheap->fdtab[fd].

I suspect the file descriptor was NULL because of a socket
connection loss.  However, the member function is invoked
unconditionally.

The access violation is a result of dereferncing a member
of the class using a NULL pointer.

The affected functions are: 
            cygwin_sendto
            cygwin_recvfrom
            cygwin_getpeername
            cygwin_recv
            cygwin_send


I've created a patch file (diff -up) but this is my first time
submitting a report.

Thanks.


Joe Hagen



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