Use UnsafeCell for char_buf to make modern Rust linter happy #24
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…_reference_casting) It is a zero-cost abstraction, so there is no additional overhead or performance hit.
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Use
slab.ps.char_buf: UnsafeCell<String>to avoidinvalid_reference_castingerrors in lines like this:It is a zero-cost abstraction, so there is no additional overhead or performance hit.