Comments (1)
jbcoe
commented on August 19, 2024
We initially (2023-11-08) presented wg21.link/P3019r1 and later we presented wg21.link/P3019r2 (2023-11-10).
The Library Evolution working group approved the design in wg21.link/P3019r2 but did not forward to the Library Group because they wanted some amendments to the paper (Remove optional specialization, correct noexcept status on swap (follow vector)). These edits have since been applied and submitted as merged PRs.
During discussion in LEWG and at the meeting in general we were able to improve our handling of allocators in assignment and swap to model vector (a container).
We added sections to the paper to cover modelled types (namely vector, optional and unique_ptr). This gave motivation for noexcept statuses, comparison support and more.
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Related Issues (20)
- Add tests to ensure types correctly use `allocator_traits<A>::pointer`, ideally based on `boost::offset_ptr` HOT 3
- Fix wording for move constructors when `allocator_traits::is_always_equal` is false
- Document the existence of pre-c++20 and experimental implementations of indirect and polymorphic
- P3019R4 says that polymorphic's moved-from state is valueless, which is not the author's intent HOT 1
- Update assignment wording
- Add explicit discussion of why valueless_after_move is needed
- Discuss indirect's non-conditional copy ctor in the light of concept trickery HOT 1
- Add a response to stack overflow question about polymorphism and pointers HOT 1
- Get CI running on a schedule on main
- Re-enable ASAN and TSAN on Bazel HOT 1
- Redundant condition in polymorphic's constraints HOT 2
- polymorphic_inline_vtable.h doesn't support moving with non-equal allocator HOT 3
- polymorphic's control block does not construct the object using the allocator HOT 1
- Add indirect and polymorphic to the ISO C++ Standard
- Don't delegate constructors in formal wording
- Pull Throws clause out of constructors and put it into a common block like wg21.link/P2642
- Remove remove_const from hash wording
- Align comparisons with those in reference wrapper
- Rewrite tests from scratch to test different types and allocators
- Convert paper to use LaTeX so that we can suitably highlight sections for insertion into the draft C++ standard.
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