mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-11 22:02:55 +00:00
47 lines
1.2 KiB
Rust
47 lines
1.2 KiB
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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let _ = i16::from(1i8);
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let _ = i32::from(1i8);
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let _ = i64::from(1i8);
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let _ = i16::from(1u8);
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let _ = i32::from(1u8);
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let _ = i64::from(1u8);
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let _ = u16::from(1u8);
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let _ = u32::from(1u8);
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let _ = u64::from(1u8);
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let _ = i32::from(1i16);
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let _ = i64::from(1i16);
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let _ = i32::from(1u16);
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let _ = i64::from(1u16);
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let _ = u32::from(1u16);
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let _ = u64::from(1u16);
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let _ = i64::from(1i32);
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let _ = i64::from(1u32);
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let _ = u64::from(1u32);
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// Test with an expression wrapped in parens
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let _ = u16::from(1u8 + 1u8);
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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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// Same as the above issue. We can't suggest `::from` in const fns in impls
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mod cast_lossless_in_impl {
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struct A;
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impl A {
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pub const fn convert(x: u32) -> u64 {
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x as u64
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}
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}
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}
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