mirror of
https://github.com/rust-lang/rust-clippy
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8c416c3197
`::from` is not a const fn, so applying the suggestion of `cast_lossless` would fail to compile. The fix is to skip the lint if the cast is found inside a const fn.
33 lines
789 B
Rust
33 lines
789 B
Rust
// run-rustfix
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#![allow(clippy::no_effect, clippy::unnecessary_operation, dead_code)]
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#![warn(clippy::cast_lossless)]
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fn main() {
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// Test clippy::cast_lossless with casts to integer types
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i16::from(1i8);
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i32::from(1i8);
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i64::from(1i8);
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i16::from(1u8);
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i32::from(1u8);
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i64::from(1u8);
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u16::from(1u8);
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u32::from(1u8);
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u64::from(1u8);
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i32::from(1i16);
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i64::from(1i16);
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i32::from(1u16);
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i64::from(1u16);
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u32::from(1u16);
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u64::from(1u16);
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i64::from(1i32);
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i64::from(1u32);
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u64::from(1u32);
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}
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// The lint would suggest using `f64::from(input)` here but the `XX::from` function is not const,
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// so we skip the lint if the expression is in a const fn.
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// See #3656
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const fn abc(input: u16) -> u32 {
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input as u32
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}
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