Alignment issue on x86_64?

[Rémi Cardona]

Andrew Haley wrote:
> Yes.  Make me a self-contained reproducible test case and I'll tell you
> where the problem is.

Sigh, sorry for wasting everyone's time on this.

I've finally found that due to wrong #defines and #includes, my 2 
sources files were built with different definitions of "Atom". Making 
sure they were definied the same way fixed the issue, no more silly 
swaping required.

Thanks to all of you for your help, it helped me a lot and sorry for the 
noise on this list.

Cheers,

Rémi