--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mozilla-cairo-return.patch	Thu Feb 03 10:42:10 2011 +0100
@@ -0,0 +1,21 @@
+# HG changeset patch
+# User Wolfgang Rosenauer <wr@rosenauer.org>
+# Parent e36e1a20cb5e1ba0e4bc3facac58029544d92e0a
+Bug 631155 - undefined return value in function '_cairo_surface_wrapper_flush'
+
+diff --git a/gfx/cairo/cairo/src/cairo-surface-wrapper.c b/gfx/cairo/cairo/src/cairo-surface-wrapper.c
+--- a/gfx/cairo/cairo/src/cairo-surface-wrapper.c
++++ b/gfx/cairo/cairo/src/cairo-surface-wrapper.c
+@@ -526,9 +526,12 @@ _cairo_surface_wrapper_fini (cairo_surfa
+ }
+ 
+ cairo_status_t
+ _cairo_surface_wrapper_flush (cairo_surface_wrapper_t *wrapper)
+ {
+     if (wrapper->target->backend->flush) {
+ 	return wrapper->target->backend->flush(wrapper->target);
+     }
++
++    // this is preliminary to cool down gcc and build checks
++    return CAIRO_STATUS_SUCCESS;
+ }