https://svn.boost.org/trac10/ticket/689 <pre class="wiki">when using a po::value with a representation of the default value having a certain length, 'std::cout &lt;&lt; opts' will stuck in an endless loop. E.g. ----- #include &lt;boost/program_options.hpp&gt; #include &lt;string&gt; #include &lt;iostream&gt; namespace po = boost::program_options; int main(int argc, char *argv[]) { po::options_description opts; opts.add_options() ("cfgfile,c", po::value&lt;std::string&gt;()-&gt;default_value("/usr/local/etc/myprogramXXXXXXXXX/configuration.conf"), "the configfile"); std::cout &lt;&lt; opts; } ----- | $ rpm -q boost | boost-1.33.1-5 | | $ g++ foo.c -lboost_program_options | $ strace ./a.out | ... | write(1, " -c [ --cfgfile ] arg (=/usr/lo"..., 80 -c [ --cfgfile ] arg (=/usr/local/etc/myprogramXXXXXXXXX/configuration.conf) | ) = 80 | write(1, " "..., 80 | ) = 80 | write(1, " "..., 80 | ) = 80 | ... Removing one 'X' will result in an ugly | -c [ --cfgfile ] arg (=/usr/local/etc/myprogramXXXXXXXX/configuration.conf) t | h | e | c | o | n | f | i | g | f | i | l | e output. It would be nice, when: - the default value could be moved into the description column - the description would begin on a new line and an earlier column (e.g. 30-40) when option name/default-value are too long (&gt; 30-40 chars) </pre> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/689 Trac 1.4.3 nobody Sun, 25 Mar 2007 20:30:18 GMT https://svn.boost.org/trac10/ticket/689#comment:2 https://svn.boost.org/trac10/ticket/689#comment:2 <ul> <li><strong>component</strong> <span class="trac-field-old">None</span> → <span class="trac-field-new">program_options</span> </li> <li><strong>severity</strong> → <span class="trac-field-new">Problem</span> </li> </ul> Ticket s.ochsenknecht@… Mon, 19 Oct 2009 18:08:48 GMT https://svn.boost.org/trac10/ticket/689 https://svn.boost.org/trac10/ticket/689 <ul> <li><strong>attachment</strong> → <span class="trac-field-new">patch1.diff</span> </li> </ul> <p> patch </p> Ticket s.ochsenknecht@… Mon, 19 Oct 2009 18:12:58 GMT https://svn.boost.org/trac10/ticket/689#comment:4 https://svn.boost.org/trac10/ticket/689#comment:4 <ul> <li><strong>cc</strong> <span class="trac-author">s.ochsenknecht@…</span> added </li> </ul> Ticket Vladimir Prus Sun, 01 Nov 2009 10:44:50 GMT https://svn.boost.org/trac10/ticket/689#comment:5 https://svn.boost.org/trac10/ticket/689#comment:5 <ul> <li><strong>status</strong> <span class="trac-field-old">assigned</span> → <span class="trac-field-new">closed</span> </li> <li><strong>resolution</strong> <span class="trac-field-old">None</span> → <span class="trac-field-new">fixed</span> </li> </ul> <p> (In <a class="changeset" href="https://svn.boost.org/trac10/changeset/57271" title="Put description to next line if we'd overflow otherwise. Fixes #689. ...">[57271]</a>) Put description to next line if we'd overflow otherwise. Fixes <a class="closed ticket" href="https://svn.boost.org/trac10/ticket/689" title="#689: Bugs: [program_options] Endless loop with long default arguments (closed: fixed)">#689</a>. </p> <p> Patch from Sascha Ochsenknecht. </p> Ticket Vladimir Prus Sun, 01 Nov 2009 10:46:20 GMT https://svn.boost.org/trac10/ticket/689#comment:7 https://svn.boost.org/trac10/ticket/689#comment:7 <ul> <li><strong>milestone</strong> → <span class="trac-field-new">Boost 1.42.0</span> </li> </ul> Ticket