From: Michael Albinus <michael.albinus@gmx.de>
Date: Mon, 15 Aug 2016 10:29:20 +0000 (+0200)
Subject: Fix stale cache problem in Tramp
X-Git-Tag: emacs-26.0.90~1739
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=9c2ce57719d0db8ac0a01b65d7e8d7ccc3f2d6ca;p=emacs.git

Fix stale cache problem in Tramp

* lisp/net/tramp-cache.el (tramp-get-connection-property):
Check, that a process as key is still running.  (Bug#22478)
---

diff --git a/lisp/net/tramp-cache.el b/lisp/net/tramp-cache.el
index 07176be6e4e..76b49a09e3a 100644
--- a/lisp/net/tramp-cache.el
+++ b/lisp/net/tramp-cache.el
@@ -237,9 +237,14 @@ connection, returns DEFAULT."
     (aset key 3 nil)
     (aset key 4 nil))
   (let* ((hash (tramp-get-hash-table key))
-	 (value (if (hash-table-p hash)
-		    (gethash property hash default)
-		  default)))
+	 (value
+	  ;; If the key is an auxiliary process object, check whether
+	  ;; the process is still alive.
+	  (if (and (processp key) (not (memq (process-status key) '(run open))))
+	      default
+	    (if (hash-table-p hash)
+		(gethash property hash default)
+	      default))))
     (tramp-message key 7 "%s %s" property value)
     value))