rust/tests/ui/cast.rs

60 lines
1.6 KiB
Rust
Raw Normal View History

2018-10-06 18:18:06 +02:00
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
2018-12-09 23:26:16 +01:00
#[warn(
clippy::cast_precision_loss,
clippy::cast_possible_truncation,
clippy::cast_sign_loss,
clippy::cast_possible_wrap,
clippy::cast_lossless
)]
2018-07-28 17:34:52 +02:00
#[allow(clippy::no_effect, clippy::unnecessary_operation)]
fn main() {
2018-07-28 17:34:52 +02:00
// Test clippy::cast_precision_loss
2017-02-08 14:58:07 +01:00
1i32 as f32;
1i64 as f32;
1i64 as f64;
1u32 as f32;
1u64 as f32;
1u64 as f64;
2018-07-28 17:34:52 +02:00
// Test clippy::cast_possible_truncation
2017-02-08 14:58:07 +01:00
1f32 as i32;
1f32 as u32;
1f64 as f32;
1i32 as i8;
1i32 as u8;
1f64 as isize;
1f64 as usize;
2018-07-28 17:34:52 +02:00
// Test clippy::cast_possible_wrap
2017-02-08 14:58:07 +01:00
1u8 as i8;
1u16 as i16;
1u32 as i32;
1u64 as i64;
1usize as isize;
2018-07-28 17:34:52 +02:00
// Test clippy::cast_lossless with casts from floating-point types
2017-08-13 23:58:17 +02:00
1.0f32 as f64;
2018-07-28 17:34:52 +02:00
// Test clippy::cast_lossless with an expression wrapped in parens
(1u8 + 1u8) as u16;
2018-07-28 17:34:52 +02:00
// Test clippy::cast_sign_loss
2017-02-08 14:58:07 +01:00
1i32 as u32;
1isize as usize;
// Extra checks for *size
// Test cast_unnecessary
1i32 as i32;
1f32 as f32;
false as bool;
&1i32 as &i32;
// Should not trigger
#[rustfmt::skip]
let v = vec!(1);
&v as &[i32];
1.0 as f64;
1 as u64;
2015-09-28 07:11:03 +02:00
}