I think there is a bug in CFFI with CCL's 32-bit version:
(cffi:defcunion foo-union
(int16 :int16 )
(uint64 :uint64 )
)
(cffi:defcstruct bar-struct
(tag :uint8)
(val foo-union))
(defun foo ()
(cffi:with-foreign-string (data "0123456789" :encoding :latin-1)
(- (cffi:pointer-address (cffi:foreign-slot-value data 'bar-struct 'val))
(cffi:pointer-address data))))
FOO returns 4 in SBCL and Lispworks but with CCL it's 8.
Helmut
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