Protected handle errors

[Conrad Scott]

A while ago I posted that I was seeing lots of messages like the
following when running a cygwin DLL compiled with --enable-debugging:

19791 [main] sh 1316 mark_closed: attempt to close protected handle
void memory_init():155(cygwin_mount_h<0x150>)
24806 [main] sh 1316 mark_closed:  by int
fhandler_base::close():763(get_handle()<0x150>)

I've changed the cygserver client code so the DLL no longer connects
to cygserver at start-up; rather it now delays making a connection
until (and only if) the client actually requires some cygserver
functionality. Hey presto!  I stop seeing these messages.  To be
accurate, I only see them in processes that *do* connect to cygserver
for, e.g., tty handle duplication.

Since I'm also getting some intermittent problems with clients
connecting to cygserver, I thought I ought to investigate this now I
know it's related to cygserver.  Has anyone got any pointers or
suggestions before I go and dive in?  I assume that the cygserver
client code should be doing something with the IPC handles that it's
presently not doing.

// Conrad