https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88996
Bug ID: 88996 Summary: Implement P0439R0 - Make std::memory_order a scoped enumeration. Product: gcc Version: 9.0 Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: emsr at gcc dot gnu.org Target Milestone: --- Basically make memory_order an enum class and make constexpr aliases to teh old names. Without breaking ABI.