https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67006
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://gcc.gnu.org/bugzill | |a/show_bug.cgi?id=64644 --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- Note the warning changed to an error in GCC 8: <source>:2:14: error: anonymous union with no members const union {}; ^ This was because of PR 64644.