Make sure the X mouse position hook always looks at an X frame

* src/xterm.c (XTmouse_position): Check that f1 is an X frame.

1 files changed, 1 insertions, 2 deletions

diff --git a/src/xterm.c b/src/xterm.c
index 3a9f5c9ef9f..d17eaf0cccf 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -5923,7 +5923,7 @@ XTmouse_position (struct frame **fp, int insist, Lisp_Object *bar_window,
         if (!f1 && insist > 0)
           f1 = SELECTED_FRAME ();
 
-        if (f1)
+        if (f1 && FRAME_X_P (f1))
           {
             /* Ok, we found a frame.  Store all the values.
                last_mouse_glyph is a rectangle used to reduce the
@@ -5933,7 +5933,6 @@ XTmouse_position (struct frame **fp, int insist, Lisp_Object *bar_window,
                on it, i.e. into the same rectangles that matrices on
                the frame are divided into.  */
 
-            /* FIXME: what if F1 is not an X frame?  */
             dpyinfo = FRAME_DISPLAY_INFO (f1);
             remember_mouse_glyph (f1, win_x, win_y, &dpyinfo->last_mouse_glyph);
             dpyinfo->last_mouse_glyph_frame = f1;