Index: gtkhid-cairo.c
===================================================================
--- gtkhid-cairo.c	(revision 17202)
+++ gtkhid-cairo.c	(revision 17203)
@@ -90,6 +90,7 @@
 } render_priv_t;
 
 typedef struct hid_gc_s {
+	pcb_core_gc_t core_gc;
 	pcb_hid_t *me_pointer;
 
 	const char *colorname;								/* current color name for this GC.    */