I've tested the following ebuilds on sparc 32 (sparcstation 5), all work fine: app-vim/align (align-21.ebuild) app-vim/cvscommand (cvscommand-1.63.ebuild) app-vim/taglist (taglist-2.6-r1.ebuild) app-vim/info (info-1.7-r1.ebuild)
Looking into it now.
Added ~sparc to the keywords for these. Thanks for the bug report