[all-commits] [llvm/llvm-project] a79a6e: [libc++][regex] Uses operator<=> in sub_match.

[Mark de Wever via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a79a6ea4a831facc564a36911d79d4472ad93cec
      https://github.com/llvm/llvm-project/commit/a79a6ea4a831facc564a36911d79d4472ad93cec
  Author: Mark de Wever <koraq at xs4all.nl>
  Date:   2023-04-22 (Sat, 22 Apr 2023)

  Changed paths:
    M libcxx/docs/Status/SpaceshipProjects.csv
    M libcxx/include/regex
    M libcxx/test/std/re/re.submatch/re.submatch.op/compare.pass.cpp

  Log Message:
  -----------
  [libc++][regex] Uses operator<=> in sub_match.

The removal of operator!= in this header will be done in a separate
commit.

Note in the synopsis of P1614R2 there is a constexpr
  template<class BiIter>
    constexpr auto operator<=>(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs);

In the implementation of P1614R2 there isn't a constexpr
  template<class BiIter>
    auto operator<=>(const sub_match<BiIter>& lhs, const sub_match<BiIter>& rhs);

There doesn't seem to be an LWG-issue, but it was fixed in the Standard
by removing the constexpr in b050fd474f11441942c88ef69b8622c8036656ac.

Implements part of:
- P1614R2 The Mothership has Landed

Reviewed By: #libc, ldionne

Differential Revision: https://reviews.llvm.org/D132310