DATA_ALIGNMENT vs. DECL_USER_ALIGNMENT

[Richard Kenner]

    Ok, you got me curious.  Would you mind explaining to an Ada-clueless
    person how come these two cases can possibly be different?  In my
    C-centric view, I really can't see the difference.  Code snippets
    demonstrating the semantic difference would be highly appreciated.

You gave one in your previous message: if you specify the alignment of
a type, you don't want to see the alignment of the type made more
strict since that would affect *fields* of that type.  But you don't
mind if stand-alone objects of that type were aligned stricter.  If
you specifically set the alignment of an object, you are presumably
doing so because you *don't* want the object to be put at a stricter
alignment.