Fix cast_lossless to avoid warning on usize to f64 conversion.
#8778
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Previously, the `cast_lossless` lint would issue a warning on code that converted a `usize` value to `f64`, on 32-bit targets. `usize` to `f64` is a lossless cast on 32-bit targets, however there is no corresponding `f64::from` that takes a `usize`, so `cast_lossless`'s suggested replacement does not compile. This PR disables the lint in the case of casting from `usize` or `isize`. Fixes rust-lang#3689. changelog: [`cast_lossless`] no longer gives wrong suggestion on usize->f64
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Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @giraffate (or someone else) soon. Please see the contribution instructions for more information. |
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May 6, 2022
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@bors r+ Thanks! |
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📌 Commit 6ff77b9 has been approved by |
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☀️ Test successful - checks-action_dev_test, checks-action_remark_test, checks-action_test |
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Previously, the
cast_losslesslint would issue a warning on code thatconverted a
usizevalue tof64, on 32-bit targets.usizetof64is a lossless cast on 32-bit targets, however there isno corresponding
f64::fromthat takes ausize, socast_lossless'ssuggested replacement does not compile.
This PR disables the lint in the case of casting from
usizeorisize.Fixes #3689.
changelog: [
cast_lossless] no longer gives wrong suggestion on usize,isize->f64