https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56456 Bug 56456 depends on bug 86341, which changed state.
Bug 86341 Summary: Aggressive loop unrolling in gcc 7.x produces out-of-bounds index https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86341 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED