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P1518R2 Stop Overconstraining Allocators In Container Deduction Guides #2032

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merged 14 commits into from
Aug 27, 2021

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@fsb4000 fsb4000 commented Jul 1, 2021

Fixes #1974

https://wg21.link/P1518R2

I have a few questions:

  1. It works with clang-cl and doesn't work with cl. Is it me or the compiler has a bug?

  2. libc++ did it in C++17: llvm/llvm-project@dd15c27

Is it ok do same for compatibility with libc ++ tests?

@fsb4000 fsb4000 requested a review from a team as a code owner July 1, 2021 03:02
@StephanTLavavej StephanTLavavej changed the title implement P1518R2 P1518R2 Stop Overconstraining Allocators In Container Deduction Guides Jul 1, 2021
@StephanTLavavej StephanTLavavej added the cxx23 C++23 feature label Jul 1, 2021
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Looks good

Co-authored-by: Michael Schellenberger Costa <mschellenbergercosta@gmail.com>
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@StephanTLavavej StephanTLavavej self-assigned this Aug 18, 2021
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Thanks for implementing this CTAD paper!

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I'm mirroring this to an MSVC-internal PR. Changes can still be pushed during final review, but please notify me if that happens.

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Had to push a change to get this to pass in the internal test harness, which always wants to link and run tests (even if they're named test.compile.pass.cpp). Dropping extern from pmr::monotonic_buffer_resource mr; was sufficient, as it has a default constructor.

@CaseyCarter CaseyCarter removed their assignment Aug 26, 2021
@StephanTLavavej StephanTLavavej merged commit d46c27f into microsoft:main Aug 27, 2021
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Thanks for improving CTAD, one of my favorite features! 😻 🚀 🎉

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P1518R2 Stop Overconstraining Allocators In Container Deduction Guides
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