[libcxx-commits] [PATCH] D154590: [libc++] mark barrier constructor as constexpr explicit in <barrier>

[Edo via Phabricator via libcxx-commits]

diamante0018 added a comment.

I am unfortunately struggling a bit to come up with the proper syntax to test for 'excplicit' ctor.

I have tried a few things but I can't understand how test_convertible should be used. Could someone point me in the right direction?

What I tried but failed:

  #if TEST_STD_VER >= 11
    using CompletionF = std::function<void()>;
    static_assert(!test_convertible<std::barrier, std::ptrdiff_t, CompletionF>(), "This constructor must be explicit");
  #endif

and

  static_assert(!test_convertible<std::barrier, std::ptrdiff_t, std::_CompletionF>(), "This constructor must be explicit"); // _CompletionF is not part of std

I am missing the point about how test_convertible should be used to test the ctor of a class that takes a function as a parameter

Thanks.


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  https://reviews.llvm.org/D154590/new/

https://reviews.llvm.org/D154590