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From: Mikhail Matrosov <mikhail.matrosov@gmail.com>
Date: Wed, 2 Jun 2021 17:37:04 +0300
Message-ID: <CADhDkKx8rjn0Hg7HXsixmC8SuLgb4Gsy9SVEN0fuZJSKaHGkJA@mail.gmail.com>
Subject: Re: std::atomic_shared_ptr
To: Jonathan Wakely <jwakely.gcc@gmail.com>
Cc: Thomas Rodgers <rodgert@appliantology.com>,
 "libstdc++" <libstdc++@gcc.gnu.org>
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> Probably not, because it would require ABI-breaking changes to
std::shared_ptr, which is out of the question.

Could you please elaborate on that? I can see how folly uses
std::shared_ptr directly:

https://github.com/facebook/folly/blob/master/folly/concurrency/AtomicSharedPtr.h#L76
https://github.com/facebook/folly/blob/master/folly/concurrency/detail/AtomicSharedPtr-detail.h#L45

-----
Best regards, Mikhail Matrosov