https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69051
--- Comment #3 from Mikael Pettersson <mikpelinux at gmail dot com> --- Sounds like you're using the wrong target. m68k-linux implies a 68020, 030, 040, or 060 CPU, and they don't have alignment constraints. Perhaps you should be using an m68k-elf toolchain?
