#![allow(dead_code)] #![warn(clippy::cast_lossless)] type U8 = u8; fn main() { // Test clippy::cast_lossless with casts to integer types let _ = true as u8; let _ = true as u16; let _ = true as u32; let _ = true as u64; let _ = true as u128; let _ = true as usize; let _ = true as i8; let _ = true as i16; let _ = true as i32; let _ = true as i64; let _ = true as i128; let _ = true as isize; // Test with an expression wrapped in parens let _ = (true | false) as u16; let _ = true as U8; } // The lint would suggest using `u32::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: bool) -> 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: bool) -> u64 { x as u64 } } } #[clippy::msrv = "1.27"] fn msrv_1_27() { let _ = true as u8; } #[clippy::msrv = "1.28"] fn msrv_1_28() { let _ = true as u8; }