In special-display-p signal an error if BUFFER-NAME is not a string (Bug#11713).

* window.el (special-display-p): Signal an error if BUFFER-NAME
is not a string (Bug#11713).

2 files changed, 7 insertions, 1 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index c9fe44089c9..63b02cfe017 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2012-06-17  Martin Rudalics  <rudalics@gmx.at>
+
+        * window.el (special-display-p): Signal an error if BUFFER-NAME
+        is not a string (Bug#11713).
+
 2012-06-17  Paul Eggert  <eggert@cs.ucla.edu>
 
         * progmodes/python.el (python-info-beginning-of-backslash):
diff --git a/lisp/window.el b/lisp/window.el
index d9dd7b63e27..62cd226daec 100644
--- a/lisp/window.el
+++ b/lisp/window.el
@@ -4192,7 +4192,8 @@ or matches BUFFER-NAME, the return value is the cdr of that
 entry."
   (let (tmp)
     (cond
-     ((not (stringp buffer-name)))
+     ((not (stringp buffer-name))
+      (error "Invalid buffer name %s" buffer-name))
      ((member buffer-name special-display-buffer-names)
       t)
      ((setq tmp (assoc buffer-name special-display-buffer-names))