3 #![feature(custom_inner_attributes)]
5 #![warn(clippy::cast_lossless)]
8 // Test clippy::cast_lossless with casts to integer types
9 let _ = u8::from(true);
10 let _ = u16::from(true);
11 let _ = u32::from(true);
12 let _ = u64::from(true);
13 let _ = u128::from(true);
14 let _ = usize::from(true);
16 let _ = i8::from(true);
17 let _ = i16::from(true);
18 let _ = i32::from(true);
19 let _ = i64::from(true);
20 let _ = i128::from(true);
21 let _ = isize::from(true);
23 // Test with an expression wrapped in parens
24 let _ = u16::from(true | false);
27 // The lint would suggest using `u32::from(input)` here but the `XX::from` function is not const,
28 // so we skip the lint if the expression is in a const fn.
30 const fn abc(input: bool) -> u32 {
34 // Same as the above issue. We can't suggest `::from` in const fns in impls
35 mod cast_lossless_in_impl {
39 pub const fn convert(x: bool) -> u64 {
46 #![clippy::msrv = "1.27"]
52 #![clippy::msrv = "1.28"]
54 let _ = u8::from(true);