Safely run window size change functions

* src/window.c (run_window_size_change_functions): Use
safe_call1 when running a size change function.
(grow_mini_window, shrink_mini_window): Report error when
minibuffer window cannot be resized.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/window.c b/src/window.c
index 77a43b739ce..8c76c1f9975 100644
--- a/src/window.c
+++ b/src/window.c
@@ -3319,7 +3319,7 @@ run_window_size_change_functions (Lisp_Object frame)
       while (CONSP (functions))
         {
           if (!EQ (XCAR (functions), Qt))
-            call1 (XCAR (functions), frame);
+            safe_call1 (XCAR (functions), frame);
           functions = XCDR (functions);
         }
 
@@ -4619,6 +4619,9 @@ grow_mini_window (struct window *w, int delta, bool pixelwise)
           adjust_frame_glyphs (f);
           unblock_input ();
         }
+      else
+        error ("Failed to grow minibuffer window");
+
     }
 }
 
@@ -4662,6 +4665,8 @@ shrink_mini_window (struct window *w, bool pixelwise)
          one window frame here.  The same routine will be needed when
          shrinking the frame (and probably when making the initial
          *scratch* window).  For the moment leave things as they are.  */
+      else
+        error ("Failed to shrink minibuffer window");
     }
 }