https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66563
--- Comment #21 from Kazumoto Kojima <kkojima at gcc dot gnu.org> --- (In reply to Oleg Endo from comment #20) > I'm curious... Kaz, when bootstrapping the native 4.9 on sh4-linux, did you > use the 4.9 native compiler to build mpfr, mpc, gmp libraries? They might > indeed be silently miscompiled due to some unknown hidden bug. No, I use always 'system' compiler to build these libraries. In this case, 4.6.3 is my native system compiler.