rust/tests/ui/cast.rs

76 lines
1.4 KiB
Rust

#![feature(plugin)]
#![plugin(clippy)]
#[deny(cast_precision_loss, cast_possible_truncation, cast_sign_loss, cast_possible_wrap)]
#[allow(no_effect, unnecessary_operation)]
fn main() {
// Test cast_precision_loss
1i32 as f32;
1i64 as f32;
1i64 as f64;
1u32 as f32;
1u64 as f32;
1u64 as f64;
1i32 as f64; // Should not trigger the lint
1u32 as f64; // Should not trigger the lint
// Test 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 cast_possible_wrap
1u8 as i8;
1u16 as i16;
1u32 as i32;
1u64 as i64;
1usize as isize;
// Test cast_sign_loss
1i32 as u32;
1isize as usize;
// Extra checks for *size
// Casting from *size
1isize as i8;
1isize as f64;
1usize as f64;
1isize as f32;
1usize as f32;
1isize as i32;
1isize as u32;
1usize as u32;
1usize as i32;
// Casting to *size
1i64 as isize;
1i64 as usize;
1u64 as isize;
1u64 as usize;
1u32 as isize;
1u32 as usize; // Should not trigger any lint
1i32 as isize; // Neither should this
1i32 as usize;
// Test cast_unnecessary
1i32 as i32;
1f32 as f32;
false as bool;
&1i32 as &i32;
1i32 as i64; // Should not trigger
let v = vec!(1);
&v as &[i32]; // Should not trigger
}