https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86518
--- Comment #6 from Alexander Monakov <amonakov at gcc dot gnu.org> --- GCC 7 sadly has a similar list of miscomparing files. Did not check GCC 6 yet. So far I managed to catch one set of misbehaving warnings by checking testsuite fallout with -fcompare-debug=-Wall, but unfortunately fixing those would not reduce the number of bootstrap miscompares: PR 86567.
