id summary reporter owner description type status milestone component version severity resolution keywords cc 11691 Boost.Log does not recognize file name pattern that includes datetime format specifiers art.korotkov@… Andrey Semashev "Running the following example http://www.boost.org/doc/libs/1_59_0/libs/log/example/doc/sinks_xml_file.cpp with file name pattern ""%Y%m%d_%H%M%S_%5N.xml"" results log files having names like ""2015-Sep-29 08:42:02.330324"" (using Boost 1.59). If datetime specifiers are not included in file name pattern, everything looks good. For example, running with file name pattern ""log_%5N.xml"" generates logs in form ""log_00001.xml"". Compiling the same example with Boost 1.58 gives results as expected." Bugs closed To Be Determined log Boost 1.59.0 Problem fixed Boost, log, 1.59, file name pattern, datetime