mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-24 12:03:28 +00:00
118 lines
3.5 KiB
Rust
118 lines
3.5 KiB
Rust
#[warn(
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clippy::cast_precision_loss,
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clippy::cast_possible_truncation,
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clippy::cast_sign_loss,
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clippy::cast_possible_wrap
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)]
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#[allow(clippy::no_effect, clippy::unnecessary_operation)]
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fn main() {
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// Test clippy::cast_precision_loss
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let x0 = 1i32;
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x0 as f32;
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let x1 = 1i64;
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x1 as f32;
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x1 as f64;
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let x2 = 1u32;
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x2 as f32;
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let x3 = 1u64;
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x3 as f32;
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x3 as f64;
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// Test clippy::cast_possible_truncation
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1f32 as i32;
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1f32 as u32;
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1f64 as f32;
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1i32 as i8;
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1i32 as u8;
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1f64 as isize;
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1f64 as usize;
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// Test clippy::cast_possible_wrap
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1u8 as i8;
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1u16 as i16;
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1u32 as i32;
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1u64 as i64;
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1usize as isize;
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// Test clippy::cast_sign_loss
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1i32 as u32;
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-1i32 as u32;
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1isize as usize;
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-1isize as usize;
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0i8 as u8;
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i8::MAX as u8;
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i16::MAX as u16;
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i32::MAX as u32;
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i64::MAX as u64;
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i128::MAX as u128;
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(-1i8).abs() as u8;
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(-1i16).abs() as u16;
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(-1i32).abs() as u32;
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(-1i64).abs() as u64;
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(-1isize).abs() as usize;
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(-1i8).checked_abs().unwrap() as u8;
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(-1i16).checked_abs().unwrap() as u16;
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(-1i32).checked_abs().unwrap() as u32;
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(-1i64).checked_abs().unwrap() as u64;
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(-1isize).checked_abs().unwrap() as usize;
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(-1i8).rem_euclid(1i8) as u8;
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(-1i8).rem_euclid(1i8) as u16;
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(-1i16).rem_euclid(1i16) as u16;
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(-1i16).rem_euclid(1i16) as u32;
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(-1i32).rem_euclid(1i32) as u32;
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(-1i32).rem_euclid(1i32) as u64;
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(-1i64).rem_euclid(1i64) as u64;
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(-1i64).rem_euclid(1i64) as u128;
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(-1isize).rem_euclid(1isize) as usize;
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(1i8).rem_euclid(-1i8) as u8;
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(1i8).rem_euclid(-1i8) as u16;
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(1i16).rem_euclid(-1i16) as u16;
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(1i16).rem_euclid(-1i16) as u32;
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(1i32).rem_euclid(-1i32) as u32;
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(1i32).rem_euclid(-1i32) as u64;
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(1i64).rem_euclid(-1i64) as u64;
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(1i64).rem_euclid(-1i64) as u128;
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(1isize).rem_euclid(-1isize) as usize;
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(-1i8).checked_rem_euclid(1i8).unwrap() as u8;
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(-1i8).checked_rem_euclid(1i8).unwrap() as u16;
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(-1i16).checked_rem_euclid(1i16).unwrap() as u16;
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(-1i16).checked_rem_euclid(1i16).unwrap() as u32;
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(-1i32).checked_rem_euclid(1i32).unwrap() as u32;
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(-1i32).checked_rem_euclid(1i32).unwrap() as u64;
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(-1i64).checked_rem_euclid(1i64).unwrap() as u64;
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(-1i64).checked_rem_euclid(1i64).unwrap() as u128;
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(-1isize).checked_rem_euclid(1isize).unwrap() as usize;
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(1i8).checked_rem_euclid(-1i8).unwrap() as u8;
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(1i8).checked_rem_euclid(-1i8).unwrap() as u16;
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(1i16).checked_rem_euclid(-1i16).unwrap() as u16;
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(1i16).checked_rem_euclid(-1i16).unwrap() as u32;
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(1i32).checked_rem_euclid(-1i32).unwrap() as u32;
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(1i32).checked_rem_euclid(-1i32).unwrap() as u64;
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(1i64).checked_rem_euclid(-1i64).unwrap() as u64;
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(1i64).checked_rem_euclid(-1i64).unwrap() as u128;
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(1isize).checked_rem_euclid(-1isize).unwrap() as usize;
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// no lint for `cast_possible_truncation`
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// with `signum` method call (see issue #5395)
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let x: i64 = 5;
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let _ = x.signum() as i32;
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let s = x.signum();
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let _ = s as i32;
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// Test for signed min
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(-99999999999i64).min(1) as i8; // should be linted because signed
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// Test for various operations that remove enough bits for the result to fit
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(999999u64 & 1) as u8;
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(999999u64 % 15) as u8;
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(999999u64 / 0x1_0000_0000_0000) as u16;
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({ 999999u64 >> 56 }) as u8;
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({
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let x = 999999u64;
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x.min(1)
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}) as u8;
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999999u64.clamp(0, 255) as u8;
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999999u64.clamp(0, 256) as u8; // should still be linted
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}
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