autobuild: intermittent test failure detected

[autobuild]

The autobuild test system has detected an intermittent failing test in 
the current master tree.

The autobuild log of the failure is available here:

   http://git.samba.org/autobuild.flakey/2014-10-20-1838/flakey.log

The samba build logs are available here:

   http://git.samba.org/autobuild.flakey/2014-10-20-1838/samba.stderr
   http://git.samba.org/autobuild.flakey/2014-10-20-1838/samba.stdout
  
The top commit at the time of the failure was:

commit dbc41a5451fcd2001d43558bf5ade9828296a497
Author: Ralph Boehme <slow at samba.org>
Date:   Sat Oct 11 20:50:46 2014 +0200

    build: lib/util/string_wrappers.h: fix optimisation check for clang
    
    Building with clang resulted in an error with undefined symbols
    ___unsafe_string_function_usage_here_size_t__ etc. Turns out the
    existing check whether the compiler optimizes out functions doesn't
    match the use case, ie the check said yes, but the functions were not
    optimized out.
    
    Signed-off-by: Ralph Boehme <slow at samba.org>
    Reviewed-by: Volker Lendecke <vl at samba.org>
    
    Autobuild-User(master): Volker Lendecke <vl at samba.org>
    Autobuild-Date(master): Mon Oct 20 14:41:09 CEST 2014 on sn-devel-104