http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57232
--- Comment #16 from Sebastian Götte <gcc at jaseg dot net> --- Alexandre, curiously, applying this patch to the cross-compiler source tree fixes the problem for me building 4.8.2 for rx-elf using a 4.8.2 x86_64 host gcc. I did not even have to rebuild the host gcc.