https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71157
--- Comment #13 from Martin Sebor <msebor at gcc dot gnu.org> --- In GCC 9 the warning has disappeared with r263981. At -O1, GCC 8
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71157
--- Comment #13 from Martin Sebor <msebor at gcc dot gnu.org> --- In GCC 9 the warning has disappeared with r263981. At -O1, GCC 8