id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5384,`diagnostic_information_what` returns 0 when no `error_info` is added to exception,Pavel Machyniak <machyniak@…>,Emil Dotchevski,"Scenario: 
 - throwing derived exception from both `boost::exception` and `std::exception`
 - catching as `std::exception`
 - logging with `e.what()`, what is overridden and uses `boost::diagnostic_information_what`
 - when throwing such exception with `error_info` added, everything is fine
 - when throwing such exception without `error_info` added, no string is returned from `diagnostic_information_what`, at least I would expect the string like `""Dynamic exception type: struct TestException""`

Observations:
In `diagnostic_information_what` implementation is correct string generated by `exception_detail::diagnostic_information_impl` but is trashed and `exception_detail::get_diagnostic_information` returns 0 in described case.

Workaround:
We are using internal `boost::exception_detail::diagnostic_information_impl` instead of `boost::diagnostic_information_what`.",Bugs,closed,To Be Determined,exception,Boost 1.46.0,Problem,fixed,,