diff -Naur xcb-util-image-0.3.9.orig/image/xcb_image.c xcb-util-image-0.3.9/image/xcb_image.c
--- xcb-util-image-0.3.9.orig/image/xcb_image.c	2012-06-28 01:44:50.356530533 +0000
+++ xcb-util-image-0.3.9/image/xcb_image.c	2012-06-28 01:45:33.744531408 +0000
@@ -187,6 +187,7 @@
       assert(0);
   }
   assert(0);
+  return 0;
 }
 
 
@@ -751,6 +752,7 @@
   default:
       assert(0);
   }
+  return 0;
 }