* cmds.c (Fforward_char): Check proposed new position, and then

	set point, instead of setting point to a potentially invalid
	position.

src/cmds.c

@@ -41,17 +41,28 @@ On reaching end of buffer, stop and signal error.")
   else
     CHECK_NUMBER (n, 0);
 
-  SET_PT (point + XINT (n));
-  if (point < BEGV)
+  /* This used to just set point to point + XINT (n), and then check
+     to see if it was within boundaries.  But now that SET_PT can
+     potentially do a lot of stuff (calling entering and exiting
+     hooks, etcetera), that's not a good approach.  So we validate the
+     proposed position, then set point.  */
+  {
+    int new_point = point + XINT (n);
+
+    if (new_point < BEGV)
       {
 	SET_PT (BEGV);
 	Fsignal (Qbeginning_of_buffer, Qnil);
       }
-  if (point > ZV)
+    if (new_point > ZV)
       {
 	SET_PT (ZV);
 	Fsignal (Qend_of_buffer, Qnil);
       }
+
+    SET_PT (new_point);
+  }
+
   return Qnil;
 }