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Do not move arrival_token in barrier::try_wait #499

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Do not move arrival_token in barrier::try_wait #499

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Commits on Jul 27, 2023

  1. Do not move arrival_token in barrier::try_wait 

    Take a mutable reference instead.

Moving the token into try_wait makes no sense. The caller has to be able
to retry the try wait with the same token.

For more details and C++ spec, see:

https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2023/p2643r1.html
    @ahendriksen
    ahendriksen committed Jul 27, 2023
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