Re: Lisp_Marker size on 32bit systems

[Stefan Monnier <monnier@IRO.UMontreal.CA>]

>> used to be 24 (bytes) when we used Lisp_Misc, but it is now 32
>> (bytes) instead!
> I'll take a look at it.

Thanks.  AFAICT the only solution is to use the GCALIGNED_UNION trick in
each and every "real Lisp_Object struct" rather than once and forall in
vectorlike_header.

Maybe we should use a LISP_STRUCT macro like

    #define LISP_STRUCT(name, fields) \
      struct name { union { struct { fields } s; GCALIGNED_UNION; } u; }

> I was hoping those 8 bytes wouldn't make enough
> difference to worry about, but evidently not....

It's really the 4 extra padding bytes incurred by all vectorlikes that
annoy me.  The resulting extra 8 bytes in markers is just a symptom ;-)


        Stefan