update-eix from eix-0.14.2 fails during update-eix: terminate called after throwing an instance of 'std::out_of_range' what(): basic_string::at The exception is being thrown during the processing of media-gfx/exiv2-0.17.1.ebuild, in the function Version::set_iuse, which has been called with 'doc nls zlib xmp examples unicode (set -- de es fi fr pl ru sk; echo /#/linguas_})'.
The bug 238216 was "misused" to report two different reasons for the segfault. This is the second one (comment #44 - comment #46). *** This bug has been marked as a duplicate of bug 238216 ***