Comment 79 for bug 978333

(In reply to comment #9)
> Symptoms still appearing using patched version. Any idea where a coredump might
> live so I can attach it?

Location and naming of core files on Linux can be set using the kernel params:

  kernel.core_uses_pid
  kernel.core_pattern

You may want to check with your distribution what's the best place to set these (usually /etc/sysctl.conf)

It is not clear if the program segfaults in your case or else if this is a bug in the new implementation of session management added by Nick and Stefan in 4.8, so that should be determined first.

Note that a core file won't be useful in this bug report because I am not using the same distribution as you, so unless the core file contains all the debugging symbols and the binary statically linked (which is definitely not the case), I won't be able to make any sense of such a core file.

Brian's put some instructions on how to help debugging here:

  http://spurint.org/projects/xfce4-debugging/