....

and its compiler macro has similiar code.

However, the gf bare-struct-type-p has no method for  foreign-array-type whose objects will obviously pass the aggregatep test. So it breaks some code (on ccl).

I suggest that case be added as a method too?(What should it (and even more user-defined types) return?) Or should the checking code be modified here? (As i understood, the whole bare struct mechanism is for compatibility...)

#2 And another thing, i've realized that in my last modification to the STRUCTURE-BY-VALUE-P function (the modification is already pushed to the repo) i should have tested to see if it is a bare struct type. Without the check it will put some deprecated style code into using libffi, which also works correctly but involves unnecessary libffi dependency. Should I fix that?

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CrLF.0710