https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109457
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #3) > The issue there is the code which implements 'z' is shared with 'Z' and the > error message only references 'Z' and missed that it is shared with 'z'. Let > me file a bug for that. Filed as PR 109458.