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Mark custom hash functions as noexcept when applicable #13

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arashbm opened this issue Feb 3, 2022 · 0 comments
Open

Mark custom hash functions as noexcept when applicable #13

arashbm opened this issue Feb 3, 2022 · 0 comments

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@arashbm
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arashbm commented Feb 3, 2022 •
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libstdc++ would try to cache hash values unless the hash function is marked as noexcept and __is_fast_hash<hasher> returns true, which is the default. This might have some performance and memory use impact.
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