https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84755
--- Comment #3 from Marc Glisse <glisse at gcc dot gnu.org> --- gcc 4.6 and 4.8 branches are old and not supported anymore. Besides, trying 4.6.0 (with unidentified patches!) instead of 4.6.N with the largest possible N is just asking for trouble (the problem may already be fixed in 4.6.N). Google also has plenty of hits for your error, some may be relevant.
