Am 28.10.14 um 17:04 schrieb Ian Campbell:
> On Tue, 2014-10-28 at 16:39 +0100, Atom2 wrote:
>>> Please can you run the command under gdb and grab a back trace.
>>>

I have now re-compiled a few more pieces with debugging support, namely 
gcc-8.4.3 and glibc and again run the command
	xl create pfsense -c
under gdb. The new (full) backtrace output is attached to this mail and 
might provide you with some more clues.

BTW the same problem also seems to exist for xen-4.4.1/gcc-4.8.3 and was 
found independent of my report - please see further details and a 
discussion at http://forums.gentoo.org/viewtopic-t-1003746.html and the 
related bug report at https://bugs.gentoo.org/show_bug.cgi?id=528690.

Ian - if you (or anybody else) could add any more insight into this, it 
would be very much appreciated.

Thanks again Atom2