[Bug libstdc++/88339] New: Implement P0515R3, C++20 three-way comparison operator support <compare>.

[emsr at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88339

            Bug ID: 88339
           Summary: Implement P0515R3, C++20 three-way comparison operator
                    support <compare>.
           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: ---