+/* #### I don't currently believe that redisplay needs to mark the
+ glyphs in its structures since these will always be referenced from
+ somewhere else. However, I'm not sure enough to stake my life on it
+ at this point, so we do the safe thing. */
+
+/* See the comment in image_instantiate_cache_result as to why marking
+ the glyph will also mark the image_instance. */
+void
+mark_gutters (struct frame* f)
+{
+ if (f->current_display_lines)
+ mark_redisplay_structs (f->current_display_lines);
+ if (f->desired_display_lines)
+ mark_redisplay_structs (f->desired_display_lines);
+}
+