1 files changed, 4 insertions, 2 deletions

diff --git a/src/dispextern.h b/src/dispextern.h
index 2e3b57afc27..fbb3bc9f247 100644
--- a/src/dispextern.h
+++ b/src/dispextern.h
@@ -2287,8 +2287,10 @@ int popup_activated P_ ((void));
 /* Defined in dispnew.c  */
 
 extern int inverse_video;
-int estimate_mode_line_height P_ ((struct frame *, enum face_id));
-Lisp_Object mode_line_string P_ ((struct window *, int, int, int, int *));
+extern int required_matrix_width P_ ((struct window *));
+extern int required_matrix_height P_ ((struct window *));
+extern int estimate_mode_line_height P_ ((struct frame *, enum face_id));
+extern Lisp_Object mode_line_string P_ ((struct window *, int, int, int, int *));
 extern void redraw_frame P_ ((struct frame *));
 extern void redraw_garbaged_frames P_ ((void));
 extern void cancel_line P_ ((int, struct frame *));