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    <p>I have fixed some spots in the code to make it compile:</p> <ul> <li><p>I rewrote the nested <code>::result&lt;&gt;::type</code> logic according to the documentation of <a href="http://www.boost.org/doc/libs/1_49_0/libs/utility/utility.htm#result_of" rel="nofollow">BOOST_RESULT_OF</a>.</p> <p><strong>Note</strong> if you compile in c++11 mode, you're probably better off defining</p> <pre><code> #define BOOST_RESULT_OF_USE_DECLTYPE </code></pre> <p>in which case you don't have to bother with the nested result type template.</p></li> <li><p>The <code>operator(...)</code> method needed to be const</p></li> </ul> <p>Resulting code:</p> <pre><code>#include &lt;string&gt; #include &lt;boost/spirit/include/phoenix.hpp&gt; #include &lt;boost/spirit/include/qi.hpp&gt; using std::string; using boost::spirit::qi::grammar; using boost::spirit::qi::rule; using boost::spirit::qi::space_type; using boost::spirit::qi::skip_flag; using boost::spirit::unused_type; namespace qi = boost::spirit::qi; namespace phx = boost::phoenix; struct make_line_impl { int* _context; make_line_impl(int* context) { _context = context; } template &lt;typename Arg&gt; struct result { typedef int* type; }; template &lt;typename Arg&gt; int* operator()(Arg const &amp; content) const { return new int(5); } }; template&lt;typename Iterator&gt; struct MyGrammar : grammar&lt;Iterator, unused_type, space_type&gt; { rule&lt;Iterator, unused_type, space_type&gt; start; rule&lt;Iterator, int*(), space_type&gt; label; rule&lt;Iterator, string*(), qi::locals&lt;int*&gt;, space_type&gt; line; MyGrammar() : MyGrammar::base_type(start) { make_line_impl mlei(new int(5)); phx::function&lt;make_line_impl&gt; make_line(mlei); start = *(line); line = label[qi::_a = make_line(qi::_1)]; } }; int main(int argc, char **argv) { string contents; qi::phrase_parse(contents.begin(), contents.end(), MyGrammar&lt;string::iterator&gt;(), space_type(), skip_flag::postskip); return 0; } </code></pre>
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