https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99296
--- Comment #5 from Aldy Hernandez <aldyh at gcc dot gnu.org> --- Created attachment 50420 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50420&action=edit proposed patch As Jakub has mentioned, this is a problem with signed 1-bit precision. Legacy anti-ranges has special cased this scenario, so I've adapted out some common logic both alternatives can use. Testing in progress.
