https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71255
--- Comment #28 from Florian Weimer <fw at gcc dot gnu.org> --- We can put such a version check into the glibc headers and see how it works out in practice. As long as there is consensus to fix any related breakage (related to the attribute and forward declarations) for the GCC 7 release, this should work. I think we won't need a may_alias pragma after all.
