Andrey, can you tell me why the following program writes the second message? ---------- #include <boost/log/sources/severity_logger.hpp> #include <boost/log/logging_core.hpp> #include <boost/log/utility/init/to_console.hpp> #include <boost/log/utility/init/to_file.hpp> #include <boost/log/utility/init/common_attributes.hpp> #include <boost/log/formatters/format.hpp> #include <boost/log/formatters/attr.hpp> #include <boost/log/formatters/date_time.hpp> #include <boost/log/formatters/message.hpp> #include <boost/log/filters/attr.hpp> #include <boost/shared_ptr.hpp> enum severity_level { info, warn, error }; boost::log::sources::severity_logger logger; int main() { boost::shared_ptr<boost::log::sinks::synchronous_sink<boost::log::sinks::text_ostream_backend>> sink = boost::log::init_log_to_file("test.txt"); boost::log::add_common_attributes(); sink->locked_backend()->set_formatter(boost::log::formatters::format("[%1%] %2%") % boost::log::formatters::attr("Severity") % boost::log::formatters::message()); sink->locked_backend()->auto_flush(true); boost::log::logging_core::get()->set_filter(boost::log::filters::attr<int>("Severity")

info);

BOOST_LOG_SEV(logger, warn) << "first message"; // Message is not written. boost::log::logging_core::get()->set_filter(boost::log::filters::attr<int>("Severity") < warn); BOOST_LOG(logger) << "second message"; // Why is this message written?? } ---------- The first message is not written as the severity level warn is greater than info. However for the second message the default severity level info is smaller than warn. Thus I would expect the second message is not written either? Is this a bug? Boris