This is a tracking bug for Change: The GNU C Library version 2.27
For more details, see: https://fedoraproject.org/wiki/Changes/GLIBC227
Switch glibc in Fedora 28 to glibc version 2.27.
Rawhide is now fixed at 2.27 for the Fedora 28 release. We will not change rawhide from the 2.27 release branch until after F28 branches.