Spirit: adding test for recently fixed container attribute handling problem

[SVN r70045]

test/Jamfile

@@ -115,6 +115,7 @@ import testing ;
      [ run qi/regression_transform_assignment.cpp                 : : : : qi_regression_transform_assignment ]
      [ compile qi/regression_fusion_proto_spirit.cpp              : : qi_regression_fusion_proto_spirit ]
      [ compile qi/pass_container3.cpp                             : : qi_pass_container3 ]
+     [ compile qi/regression_container_attribute.cpp              : : qi_regression_container_attribute ]
     ;
 
     ###########################################################################

test/qi/regression_container_attribute.cpp

@@ -0,0 +1,23 @@
+//  Copyright (c) 2001-2011 Hartmut Kaiser
+//  Copyright (c) 2011 Joerg Becker 
+// 
+//  Distributed under the Boost Software License, Version 1.0. (See accompanying 
+//  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// compile test only
+
+#include <boost/spirit/include/qi.hpp>
+#include <string>
+
+int main() 
+{
+  namespace qi = boost::spirit::qi;
+
+  qi::rule < std::string::const_iterator, std::string() > const t =
+    "s" >> qi::attr( std::string() );
+
+  boost::spirit::qi::symbols< char, std::string > keywords;
+  keywords.add( "keyword", std::string( "keyword" ) );
+  qi::rule < std::string::const_iterator, std::string() > const u =
+    qi::lexeme[keywords >> !( qi::alnum | '_' )] >> qi::attr( std::string() );
+}