http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48690
--- Comment #30 from Andreas Schwab <sch...@linux-m68k.org> 2011-04-22 20:38:45 UTC --- The real problem appears to be that netbsd-elf redefines STACK_BOUNDARY to 32, but leaves PREFERRED_STACK_BOUNDARY at the default 16.