https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77405
--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> --- > Unfortunately this is the first time I tried to build gcc 7.0 in this > configuration. My previous builds were for gcc 6 and it's been several > months since I ran a test build. OK, I'll try a -fno-strict-aliasing bootstrap on Linux tomorrow.