https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65496
--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> --- #c0 got fixed or made latent with r235905. The #c4 testcase went latent with r249450 (though no idea why it hasn't been filed separately). In any case, not sure if it is worth keeping this open when it is either latent or fixed on the trunk.