http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56695
--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> 2013-03-23 17:06:30 UTC --- In any case, it would be good to add some checks on the first argument of VEC_COND_EXPR to the verifier, so the problem is detected earlier than expand.