Thank you for your reply.

1. Open suse 11.3 kernel: 2.6.34.7-0.5-desktop #1 SMP PREEMPT.
Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHz

2. I tried it with JRuby 1.5.2 and got an error about pack being
undefined. I tried the alias packed with no luck. The JRuby ffi gem
directory only has 1 file ffi-0.6.3-java/lib/ffi.rb. Are the other
files outside this directory? The docs only show the 3 methods defined
in that file(Pointer), yet is doesn't complain about FFI::Struct.

3. I would need to do some more testing but that seems to work.

On Nov 3, 4:32 pm, Wayne Meissner <wmeiss...@gmail.com> wrote:

> Indeed, looks like a bug.  That should not be neccessary at all - that
> struct should pack naturally.
>
> A couple of things:
>
> 1) What OS/cpu is this on?
> 2) Can you try it on JRuby?
> 3) Can you try adding 'pack 1' before the layout line?
>
> On 4 November 2010 08:08, Qwerty <qwerty123451...@hotmail.com> wrote:
>

> > I found a way around the problems I was having. Any field bigger than
> > 8 bits I declare as [:uchar,x bytes]. Feels like an ugly hack to get
> > around what seems to be a pretty nasty bug