bug#18165: [PATCH] Fix error when semanticdb-needs-refresh-p is called on a non-existing file

[陳侃如]

Could someone help me install this patch to emacs-24 branch?

>From f284dcc3ed0345769ed8863df36800f98af574b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kan-Ru=20Chen=20=28=E9=99=B3=E4=BE=83=E5=A6=82=29?=
 <kanru@kanru.info>
Date: Mon, 15 Sep 2014 11:47:47 +0800
Subject: Fix error when semanticdb-needs-refresh-p is called on a non-existing
 file. (Bug#18165)

 * semantic/db.el (semanticdb-needs-refresh-p): Ignore nil file
 stats. (Bug#18165)

diff --git a/lisp/cedet/ChangeLog b/lisp/cedet/ChangeLog
index f9f0cf8..626f449 100644
--- a/lisp/cedet/ChangeLog
+++ b/lisp/cedet/ChangeLog
@@ -1,8 +1,13 @@
+2014-09-15  Kan-Ru Chen (陳侃如)  <kanru@kanru.info>
+
+       * semantic/db.el (semanticdb-needs-refresh-p): Ignore nil file
+       stats. (Bug#18165)
+
 2014-05-01  Glenn Morris  <rgm@gnu.org>
 
        * ede.el (ede-project-directories, ede-check-project-directory):
        * semantic/ia-sb.el (semantic-ia-sb-show-doc):
        * semantic/tag.el (semantic-tag-in-buffer-p):
        * semantic/bovine/c.el (semantic-tag-abstract-p):
        Doc fixes (replace `iff').
 
diff --git a/lisp/cedet/semantic/db.el b/lisp/cedet/semantic/db.el
index 76a49dd..0e68cb5 100644
--- a/lisp/cedet/semantic/db.el
+++ b/lisp/cedet/semantic/db.el
@@ -593,17 +593,18 @@ The file associated with OBJ does not need to be in a 
buffer."
          )
       ;; Buffer isn't loaded.  The only clue we have is if the file
       ;; is somehow different from our mark in the semanticdb table.
       (let* ((stats (file-attributes ff))
             (actualsize (nth 7 stats))
             (actualmod (nth 5 stats))
             )
 
-       (or (not (slot-boundp obj 'tags))
+       (or (not stats)
+           (not (slot-boundp obj 'tags))
            ;; (not (oref obj tags)) -->  not needed anymore?
            (/= (or (oref obj fsize) 0) actualsize)
            (not (equal (oref obj lastmodtime) actualmod))
            )
        ))))
 

 ;;; Synchronization
-- 
1.9.1