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(merge: 9a25164 7e93032)
Auto merge of #95183 - ibraheemdev:arc-count-acquire, r=Amanieu
authorbors <bors@rust-lang.org>
Fri, 6 May 2022 14:53:24 +0000 (14:53 +0000)
committerbors <bors@rust-lang.org>
Fri, 6 May 2022 14:53:24 +0000 (14:53 +0000)
commite209e85e39b4851c3ec122a45ddeabe318b2d522
treee5089db5d51b424ee8d297d4b6053dc8a81a802ctree | snapshot
parent9a251644fa2adde5f46eea8d342b7e60e4716039commit | diff
parent7e9303272695b04c6c84a63aa447fa572c768f13commit | diff
Auto merge of #95183 - ibraheemdev:arc-count-acquire, r=Amanieu

Weaken needlessly restrictive orderings on `Arc::*_count`

There is no apparent reason for these to be `SeqCst`. For reference, [the Boost C++ implementation relies on acquire semantics](https://github.com/boostorg/smart_ptr/blob/f2cc84a23c64b8a73c9b72b34799d0854d7e0787/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp#L137-L140).
library/alloc/src/sync.rs diff1 | diff2 | blob | history
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