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