id summary reporter owner description type status milestone component version severity resolution keywords cc 4267 validation_error documentation matwey.kornilov@… Vladimir Prus "validation_error constructor signature was changed from validation_error(const std::string &); in boost 1.41.0 to validation_error(kind_t, const std::string & = """", const std::string & = """"); in boost 1.42.0+ validation_error isn't backward compatible now. This way ""Custom Validators"" section in html-documentations has an wrong example that uses 'validation_error(const std::string &)' signature. And there aren't any examples to use new version of validation_error. http://www.boost.org/doc/libs/1_43_0/doc/html/program_options/howto.html#id1421830" Bugs closed program_options Boost 1.43.0 Cosmetic duplicate