You're receiving this bug because the package in Summary has produced _FORTIFY_SOURCE related warnings indicating the presence of a sure overflow in a static buffer. Even though this is not always an indication of a security problem it might even be. So please check this out ASAP. By the way, _FORTIFY_SOURCE is disabled when you disable optimisation, so don't try finding out the cause using -O0. Thanks, Your friendly neighborhood tinderboxer
Created attachment 249712 [details] Build log
+*xephem-3.7.4-r1 (11 Oct 2010) + + 11 Oct 2010; Kacper Kowalik <xarthisius@gentoo.org> -xephem-3.7.2.ebuild, + xephem-3.7.3.ebuild, -xephem-3.7.4.ebuild, +xephem-3.7.4-r1.ebuild, + +files/xephem-3.7.4-overflows.patch: + Fix buffer overflow wrt bug 339901. Thanks to Diego for the report. + Respect CC. Drop old. Add explicit RDEPEND= +