[all-commits] [llvm/llvm-project] 271161: [libc++][memory_resource] Implements LWG3683. (#10...

[Mark de Wever via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2711618214b22bbc170edd0672f0b5fc1cb8acf4
      https://github.com/llvm/llvm-project/commit/2711618214b22bbc170edd0672f0b5fc1cb8acf4
  Author: Mark de Wever <koraq at xs4all.nl>
  Date:   2024-07-28 (Sun, 28 Jul 2024)

  Changed paths:
    M libcxx/docs/Status/Cxx23Issues.csv
    M libcxx/include/__memory_resource/polymorphic_allocator.h
    A libcxx/test/std/utilities/utility/mem.res/mem.poly.allocator.class/mem.poly.allocator.class.general/equality.pass.cpp

  Log Message:
  -----------
  [libc++][memory_resource] Implements LWG3683. (#100775)

The polymorphic_allocator was added in C++17.
This issue was filed in 2022 so well after C++20. This issue adds an
operator==.

Starting with C++20 this adds a compiler generated operator!=. To have
the same behaviour in C++17 and C++20 (and later) a manual operator!= is
defined in C++17.

Implements
- LWG3683 operator== for polymorphic_allocator cannot deduce template
argument in common cases



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