https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71067 --- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- I am not 100% sure that is a regression: with 4.8 and 4.9 I get Internal Error at (1): free_expr0(): Bad expr type i.e., old version of an ICE.