bug#12444: Emacs, a segmentation fault occurs when saving a file on a NFS partition.

[Eli Zaretskii]

> From: Yves Baumes <ybaumes@gmail.com>
> Date: Fri, 14 Sep 2012 18:55:45 +0200
> Cc: 12444-done@debbugs.gnu.org
> 
> the bug occurred with emacs-24.2, fetch from the gnu's ftp. Do you mean it is 
> fixed on the cvs repository?

In bzr, not in CVS.  Here's the patch committed by Andreas:

=== modified file 'src/ChangeLog'
--- src/ChangeLog       2012-09-12 17:18:33 +0000
+++ src/ChangeLog       2012-09-14 16:35:25 +0000
@@ -1,3 +1,9 @@
+2012-09-14  Andreas Schwab  <schwab@linux-m68k.org>
+
+       * fileio.c (Ffile_selinux_context): Only call freecon when
+       lgetfilecon succeeded.
+       (Fset_file_selinux_context): Likewise.  (Bug#12444)
+
 2012-09-12  Eli Zaretskii  <eliz@gnu.org>
 
        * xdisp.c (try_window_reusing_current_matrix): Under bidi

=== modified file 'src/fileio.c'
--- src/fileio.c        2012-07-14 10:46:56 +0000
+++ src/fileio.c        2012-09-14 16:35:25 +0000
@@ -2841,9 +2841,8 @@ or if SELinux is disabled, or if Emacs l
          if (context_range_get (context))
            values[3] = build_string (context_range_get (context));
          context_free (context);
+         freecon (con);
        }
-      if (con)
-       freecon (con);
     }
 #endif
 
@@ -2920,12 +2919,10 @@ compiled with SELinux support.  */)
            report_file_error ("Doing lsetfilecon", Fcons (absname, Qnil));
 
          context_free (parsed_con);
+         freecon (con);
        }
       else
        report_file_error ("Doing lgetfilecon", Fcons (absname, Qnil));
-
-      if (con)
-       freecon (con);
     }
 #endif