The 4.0.0.3 version does not work with bash 4.1… there's a 4.0.04 but I haven't checked what it changes.
feel free to fix the issue. it's kind of a no brainer.
i have it block versions of bash so it doesnt automatically bring in older versions when upgrading http://sources.gentoo.org/app-shells/bashdb/bashdb-4.0.0.3.ebuild?r1=1.1&r2=1.2