rust/tests/ui/cast.rs

104 lines
3.1 KiB
Rust

#[warn(
clippy::cast_precision_loss,
clippy::cast_possible_truncation,
clippy::cast_sign_loss,
clippy::cast_possible_wrap
)]
#[allow(clippy::no_effect, clippy::unnecessary_operation)]
fn main() {
// Test clippy::cast_precision_loss
let x0 = 1i32;
x0 as f32;
let x1 = 1i64;
x1 as f32;
x1 as f64;
let x2 = 1u32;
x2 as f32;
let x3 = 1u64;
x3 as f32;
x3 as f64;
// Test clippy::cast_possible_truncation
1f32 as i32;
1f32 as u32;
1f64 as f32;
1i32 as i8;
1i32 as u8;
1f64 as isize;
1f64 as usize;
// Test clippy::cast_possible_wrap
1u8 as i8;
1u16 as i16;
1u32 as i32;
1u64 as i64;
1usize as isize;
// Test clippy::cast_sign_loss
1i32 as u32;
-1i32 as u32;
1isize as usize;
-1isize as usize;
0i8 as u8;
i8::MAX as u8;
i16::MAX as u16;
i32::MAX as u32;
i64::MAX as u64;
i128::MAX as u128;
(-1i8).abs() as u8;
(-1i16).abs() as u16;
(-1i32).abs() as u32;
(-1i64).abs() as u64;
(-1isize).abs() as usize;
(-1i8).checked_abs().unwrap() as u8;
(-1i16).checked_abs().unwrap() as u16;
(-1i32).checked_abs().unwrap() as u32;
(-1i64).checked_abs().unwrap() as u64;
(-1isize).checked_abs().unwrap() as usize;
(-1i8).rem_euclid(1i8) as u8;
(-1i8).rem_euclid(1i8) as u16;
(-1i16).rem_euclid(1i16) as u16;
(-1i16).rem_euclid(1i16) as u32;
(-1i32).rem_euclid(1i32) as u32;
(-1i32).rem_euclid(1i32) as u64;
(-1i64).rem_euclid(1i64) as u64;
(-1i64).rem_euclid(1i64) as u128;
(-1isize).rem_euclid(1isize) as usize;
(1i8).rem_euclid(-1i8) as u8;
(1i8).rem_euclid(-1i8) as u16;
(1i16).rem_euclid(-1i16) as u16;
(1i16).rem_euclid(-1i16) as u32;
(1i32).rem_euclid(-1i32) as u32;
(1i32).rem_euclid(-1i32) as u64;
(1i64).rem_euclid(-1i64) as u64;
(1i64).rem_euclid(-1i64) as u128;
(1isize).rem_euclid(-1isize) as usize;
(-1i8).checked_rem_euclid(1i8).unwrap() as u8;
(-1i8).checked_rem_euclid(1i8).unwrap() as u16;
(-1i16).checked_rem_euclid(1i16).unwrap() as u16;
(-1i16).checked_rem_euclid(1i16).unwrap() as u32;
(-1i32).checked_rem_euclid(1i32).unwrap() as u32;
(-1i32).checked_rem_euclid(1i32).unwrap() as u64;
(-1i64).checked_rem_euclid(1i64).unwrap() as u64;
(-1i64).checked_rem_euclid(1i64).unwrap() as u128;
(-1isize).checked_rem_euclid(1isize).unwrap() as usize;
(1i8).checked_rem_euclid(-1i8).unwrap() as u8;
(1i8).checked_rem_euclid(-1i8).unwrap() as u16;
(1i16).checked_rem_euclid(-1i16).unwrap() as u16;
(1i16).checked_rem_euclid(-1i16).unwrap() as u32;
(1i32).checked_rem_euclid(-1i32).unwrap() as u32;
(1i32).checked_rem_euclid(-1i32).unwrap() as u64;
(1i64).checked_rem_euclid(-1i64).unwrap() as u64;
(1i64).checked_rem_euclid(-1i64).unwrap() as u128;
(1isize).checked_rem_euclid(-1isize).unwrap() as usize;
// no lint for `cast_possible_truncation`
// with `signum` method call (see issue #5395)
let x: i64 = 5;
let _ = x.signum() as i32;
let s = x.signum();
let _ = s as i32;
}