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// run-rustfix
#![allow(clippy::no_effect, clippy::unnecessary_operation, dead_code)]
#![warn(clippy::cast_lossless)]
fn main() {
// Test clippy::cast_lossless with casts to integer types
let _ = 1i8 as i16;
let _ = 1i8 as i32;
let _ = 1i8 as i64;
let _ = 1u8 as i16;
let _ = 1u8 as i32;
let _ = 1u8 as i64;
let _ = 1u8 as u16;
let _ = 1u8 as u32;
let _ = 1u8 as u64;
let _ = 1i16 as i32;
let _ = 1i16 as i64;
let _ = 1u16 as i32;
let _ = 1u16 as i64;
let _ = 1u16 as u32;
let _ = 1u16 as u64;
let _ = 1i32 as i64;
let _ = 1u32 as i64;
let _ = 1u32 as u64;
// Test with an expression wrapped in parens
let _ = (1u8 + 1u8) as u16;
}
// The lint would suggest using `f64::from(input)` here but the `XX::from` function is not const,
// so we skip the lint if the expression is in a const fn.
// See #3656
const fn abc(input: u16) -> u32 {
input as u32
}
// Same as the above issue. We can't suggest `::from` in const fns in impls
mod cast_lossless_in_impl {
struct A;
impl A {
pub const fn convert(x: u32) -> u64 {
x as u64
}
}
}
#[derive(PartialEq, Debug)]
#[repr(i64)]
enum Test {
A = u32::MAX as i64 + 1,
}
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