On 09/07/2018 07:19 AM, Eli Zaretskii wrote:
> I think GCC aligns the Lisp_Object array within the structures because
> a Lisp_Object is an 8-byte data type in this configuration.

That alignment is platform-dependent. On Fedora 28 configured 
--with-wide-int and with gcc -m32, a Lisp_Object is 8 bytes but its 
alignment is only 4 bytes. Apparently the alignment of 'long long' is 4 
on Fedora 28 x86, but 8 on MS-Windows x86.

I installed the attached; please give it a try.