<div dir="ltr"><div><div><div>Hi Jeff,<br><br></div>It's harmless, it's just telling you that the syntax that cl-gd uses for structure arguments will eventually (in a future version of CFFI) not work. The messages describes the problem. The structure is specified as cl-gd::gd-image in a function argument or return value. In the old versions of CFFI, that was interpreted as a pointer to that structure, because there was no other possibility. Now structures can also be passed/returned by value using cffi-libffi, so you have to say explicitly as the error message indicates. They might also need to change the use of #'mem-aref (which before returned a pointer to the structure but now returns the structure itself) into a #'mem-aptr.<br>
<br></div>I'm not subscribed to the cl-gd-devel list, so you should forward this response there.<br><br></div>Liam<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jan 27, 2014 at 4:42 PM, Jeff Cunningham <span dir="ltr"><<a href="mailto:jeffrey@jkcunningham.com" target="_blank">jeffrey@jkcunningham.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi;<br>
<br>
A short while ago I started noticing this error message showing up<br>
<br>
;; STYLE-WARNING:<br>
;; bare references to struct types are deprecated. Please use (:POINTER (:STRUCT CL-GD::GD-IMAGE))<br>
;; or (:STRUCT CL-GD::GD-IMAGE) instead.<br>
<br>
It took me awhile to extract a simple demo case, but I've narrowed it down to the WITH-THICKNESS macro call I believe.<br>
I'm not sure which list would be best for this question, so I cross-posted it.<br>
<br>
Here's a test case.<br>
<br>
(ql:quickload "cl-gd")<br>
(use-package :cl-gd)<br>
<br>
(let* ((x1 -86)<br>
(x2 529)<br>
(y1 -0.13)<br>
(y2 1.16)<br>
(xv '(0.0 1.0 2.0 3.0 4.0))<br>
(yv '(0.99 0.12 0.66 0.24 0.075)))<br>
(with-image* (500 250)<br>
(allocate-color 255 255 255)<br>
(let ((c (allocate-color 0 0 255)))<br>
(with-transformation (:x1 x1 :x2 x2 :y1 y1 :y2 y2)<br>
(with-thickness (1)<br>
(mapl #'(lambda (x y)<br>
(when (and (cdr x) (cdr y))<br>
(draw-line (car x) (car y) (cadr x) (cadr y) :color c))) xv yv))<br>
(write-image-to-file "test.png" :if-exists :supersede)))))<br>
<br>
If you take out the with-thickness macro call the message disappears.<br>
<br>
I played around with that macro but don't really understand enough about the intricacies of cffi to fix it.<br>
Does anyone have any ideas? Here's the macro in question:<br>
<br>
(defmacro with-thickness ((thickness &key (image '*default-image*)) &body body)<br>
"Executes BODY with the current line width of IMAGE set to<br>
THICKNESS. The image's previous line width is guaranteed to be<br>
restored before the macro exits. Note that the line width is measured<br>
in pixels and is not affected by WITH-TRANSFORMATION."<br>
(cl-gd::with-unique-names (old-thickness)<br>
;; we rebind everything so we have left-to-right evaluation<br>
(cl-gd::with-rebinding (thickness image)<br>
`(let ((,old-thickness (thickness ,image)))<br>
(unwind-protect<br>
(progn<br>
(setf (thickness ,image) ,thickness))<br>
,@body)<br>
(setf (thickness ,image) ,old-thickness)))))<br>
<br>
<br>
Much obliged.<span class="HOEnZb"><font color="#888888"><br>
<br>
--Jeff Cunningham<br>
<br>
<br>
</font></span></blockquote></div><br></div>