https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119108
--- Comment #5 from Tamar Christina <tnfchris at gcc dot gnu.org> --- Ah... It looks like somehow the built for /data/gcc/gcc-with-68326d5d1a5-install/ failed and it was silently picking up the distro compiler instead. Hence the difference in memmove only! I'll clean everything and rebuild