Ah, thank you.

$ZSH_PATCHLEVEL == "zsh-5.0.7-0-g208bded"
$(uname -a) == "Linux protogon.localdomain 3.17.6-1-ARCH #1 SMP
PREEMPT Sun Dec 7 23:43:32 UTC 2014 x86_64 GNU/Linux"

I've attached the output of gdb backtrace, watch and the headers.

On Sat, Dec 13, 2014 at 3:28 PM, Bart Schaefer
<schaefer@brasslantern.com> wrote:
> On Dec 13, 11:49am, Jonathan H wrote:
> }
> } I've attached the coredump
>
> This doesn't help at all, because it's not usable without the same binary
> environment where the crash occurred.  The output of the "where" command
> in GDB or the equivalent stack backtrace from another debugger is what
> you should send.
>
> Also we need to know the specific version of zsh (echo $ZSH_PATCHLEVEL
> for example) and usually also the operating system you're using.