id summary reporter owner description type status milestone component version severity resolution keywords cc 3942 Backwards Compatibility break, program_options error with multiple occurrences Scott MacVicar Vladimir Prus "We recently upgraded a project to 1.42 and noticed that command line parsing has regressed since 1.41. We defined --config and --config-value, with 1.42 we get an error regarding multiple occurrences. In 1.41 this worked without issue. {{{ [macvicar@dev457 /tmp] LD_LIBRARY_PATH=/tmp/b142/lib ./a.out --config foo --config-value bar terminate called after throwing an instance of 'boost::exception_detail::clone_impl >' what(): multiple occurrences Aborted [macvicar@dev457 /tmp] LD_LIBRARY_PATH=/tmp/b141/lib ./a.out --config foo --config-value bar config: foo config-value: bar }}} " Bugs closed Boost 1.44.0 program_options Boost 1.44.0 Showstopper fixed