https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81117
--- Comment #21 from Martin Sebor <msebor at gcc dot gnu.org> --- I believe the bug you are pointing out was reported in https://sourceware.org/bugzilla/show_bug.cgi?id=22442 and fixed in Glibc 2.27. Please see the discussion at https://sourceware.org/ml/libc-alpha/2017-11/msg00336.html for the background.
