Subclasses of STRUCT may now allocate foreign memory

diff --git a/glib/proxy.lisp b/glib/proxy.lisp
index 9058e234056f016d59a0e53adb7c2ea308dba000..88971c18173274903c2b0fe351506169c2d73d8f 100644 (file)
--- a/glib/proxy.lisp
+++ b/glib/proxy.lisp
@@ -15,7 +15,7 @@
 ;; License along with this library; if not, write to the Free Software
 ;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-;; $Id: proxy.lisp,v 1.12 2004-11-09 10:10:59 espen Exp $
+;; $Id: proxy.lisp,v 1.13 2004-11-15 19:20:55 espen Exp $
 
 (in-package "GLIB")
 
@@ -408,10 +408,11 @@ (defclass struct (proxy)
 
 (defmethod initialize-instance ((struct struct) &rest initargs)
   (declare (ignore initargs))
-  (let ((size (proxy-instance-size (class-of struct))))
-    (if (zerop size)
-       (error "~A has zero size" (class-of struct))
-      (setf (slot-value struct 'location) (allocate-memory size))))
+  (unless (slot-boundp struct 'location)
+    (let ((size (proxy-instance-size (class-of struct))))
+      (if (zerop size)
+         (error "~A has zero size" (class-of struct))
+         (setf (slot-value struct 'location) (allocate-memory size)))))
   (call-next-method))