mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-30 06:53:27 +00:00
47 lines
1.2 KiB
Rust
47 lines
1.2 KiB
Rust
// 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 _ = i16::from(1i8);
|
|
let _ = i32::from(1i8);
|
|
let _ = i64::from(1i8);
|
|
let _ = i16::from(1u8);
|
|
let _ = i32::from(1u8);
|
|
let _ = i64::from(1u8);
|
|
let _ = u16::from(1u8);
|
|
let _ = u32::from(1u8);
|
|
let _ = u64::from(1u8);
|
|
let _ = i32::from(1i16);
|
|
let _ = i64::from(1i16);
|
|
let _ = i32::from(1u16);
|
|
let _ = i64::from(1u16);
|
|
let _ = u32::from(1u16);
|
|
let _ = u64::from(1u16);
|
|
let _ = i64::from(1i32);
|
|
let _ = i64::from(1u32);
|
|
let _ = u64::from(1u32);
|
|
|
|
// Test with an expression wrapped in parens
|
|
let _ = u16::from(1u8 + 1u8);
|
|
}
|
|
|
|
// 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
|
|
}
|
|
}
|
|
}
|