https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68486
Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2015-11-22 CC| |kargl at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- Confirmed. I have attached a test case. I think that the gcc_unreachable (); should be replaced with a fallback to the intrinsic version in the library when possible.