Re: [cffi-devel] Inline expansions for pointer operations

On Sun, Apr 25, 2010 at 6:43 PM, Juan Jose Garcia-Ripoll juanjose.garciaripoll@googlemail.com wrote:

... provided in this patch.

I have a few questions about this patch.

(defun pointer-eq (ptr1 ptr2) "Return true if PTR1 and PTR2 point to the same address." - (= (ffi:pointer-address ptr1) (ffi:pointer-address ptr2))) + ;; In ECL two pointers are EQUAL if they point to the same address. + (equal ptr1 ptr2))

One advantage of the previous definition is that passing non-pointers to POINTER-EQ would (I assume) signal an error. What do you think?

+(define-compiler-macro null-pointer () + '(si::allocate-foreign-data :void 0))

Any reason why a simpler (declaim (inline null-pointer)) wouldn't work just as well?