mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-22 07:32:00 +00:00
73 lines
1.5 KiB
Rust
73 lines
1.5 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_value() as u8;
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i16::max_value() as u16;
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i32::max_value() as u32;
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i64::max_value() as u64;
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i128::max_value() as u128;
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// Extra checks for *size
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// Test cast_unnecessary
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1i32 as i32;
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1f32 as f32;
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false as bool;
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&1i32 as &i32;
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// macro version
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macro_rules! foo {
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($a:ident, $b:ident) => {
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pub fn $a() -> $b {
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1 as $b
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}
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};
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}
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foo!(a, i32);
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foo!(b, f32);
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foo!(c, f64);
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// casting integer literal to float is unnecessary
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100 as f32;
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100 as f64;
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100_i32 as f64;
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// Should not trigger
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#[rustfmt::skip]
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let v = vec!(1);
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&v as &[i32];
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1.0 as f64;
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1 as u64;
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}
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