Workaround for integer_to_ptr_transmutes warning#3731
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Urgau
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Sep 8, 2025
| unsafe { transmute(value << 1) } | ||
| #[allow(unknown_lints, integer_to_ptr_transmutes)] | ||
| unsafe { | ||
| transmute(value << 1) |
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As the documentation of with_exposed_provenance_mut says, it's fully equivalent to an as cast, which I highly recommend using in order to avoid the UB here.
Suggested change
| transmute(value << 1) | |
| &mut *((value << 1) as *const Self) |
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See https://github.com/microsoft/windows-rs/actions/runs/17277596764/job/49038221132?pr=3730
This new warning seems a little painful.
with_exposed_provenance_mutbut that requires a higher MSRV.integer_to_ptr_transmutesbut that is an unknown lint to the current MSRV.So I have to allow both
unknown_lintsandinteger_to_ptr_transmutes.That does not seem ideal. 🤔