https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70704
--- Comment #26 from David Edelsohn <dje at gcc dot gnu.org> --- After some more tests, I don't believe that flex is the culprit. I removed gengtype-lex.c from GCC-6.0.1-RC and allowed the flex to rebuild it, but the build still failed with the miscompare. The problem remains that r235040 works and the tarball does not.
