[Ecls-list] Undeclared identifier when compilng a defcallback‏

[Ramon Casanova]

Hi, I get "error C2065: 'ecl_callback_0' : undeclared identifier" error when
compiling a ffi:defcallback.

For instance, I'm unable to compile the following defun (using the MSVC
version of ECL):

(defun prepare-callback ()
  (ffi:defcallback mycallback :int () (+ 3 4)))

The only workarround I found is to put a forward declaration before my
defun, that is:

(ffi:clines "static int ecl_callback_0();")
(defun prepare-callback ()
  (ffi:defcallback mycallback :int () (+ 3 4)))

This way, I can use the callback from C, but this is not a valid solution
for me, since this forward declaration depends on the signature of the
defined callback.

Any feedback will be wellcome,
Ramon
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