https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94523
Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work| |9.3.0 Last reconfirmed| |2020-04-07 Status|UNCONFIRMED |NEW Known to fail| |10.0 Target Milestone|--- |10.0 Ever confirmed|0 |1 Priority|P3 |P1 --- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> --- Clang also accepts that so I hope it's reject-valid.