fix buggy use of forwarding caallback

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/libobjc/trunk@31290 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,10 @@
+2010-09-10  Richard Frith-Macdonald <rfm@gnu.org>
+
+	* sendmsg.c: (get_imp) ... fix call to __objc_get_forward_imp to
+	pass nil as the receiver since we don't know the receiver at this
+	point. Passing the class is often wrong and can result in us calling
+	a class method when we want an instance method of the same name.
+
 2010-05-12  Adam Fedor <fedor@gnu.org>
 
 	* Version 1.7.0 Snapshot release

sendmsg.c

@@ -178,8 +178,11 @@ get_imp (Class class, SEL sel)
 	      /* The dispatch table has been installed, and the method
 		 is not in the dispatch table.  So the method just
 		 doesn't exist for the class.  Return the forwarding
-		 implementation. */
+		 implementation.
-             res = __objc_get_forward_imp ((id)class, sel);
+		 We don't know the receiver (only it's class), so we
+		 can't pass that to the function :-(
+	       */
+             res = __objc_get_forward_imp (nil, sel);
 	    }
 	}
     }