mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-22 07:32:00 +00:00
49 lines
984 B
Rust
49 lines
984 B
Rust
#![feature(tool_lints)]
|
|
|
|
#[warn(clippy::fn_to_numeric_cast)]
|
|
|
|
fn foo() -> String { String::new() }
|
|
|
|
fn test_function_to_numeric_cast() {
|
|
let _ = foo as i8;
|
|
let _ = foo as i16;
|
|
let _ = foo as i32;
|
|
let _ = foo as i64;
|
|
let _ = foo as i128;
|
|
let _ = foo as isize;
|
|
|
|
let _ = foo as u8;
|
|
let _ = foo as u16;
|
|
let _ = foo as u32;
|
|
let _ = foo as u64;
|
|
let _ = foo as u128;
|
|
|
|
// Casting to usize is OK and should not warn
|
|
let _ = foo as usize;
|
|
}
|
|
|
|
fn test_function_var_to_numeric_cast() {
|
|
let abc: fn() -> String = foo;
|
|
|
|
let _ = abc as i8;
|
|
let _ = abc as i16;
|
|
let _ = abc as i32;
|
|
let _ = abc as i64;
|
|
let _ = abc as i128;
|
|
let _ = abc as isize;
|
|
|
|
let _ = abc as u8;
|
|
let _ = abc as u16;
|
|
let _ = abc as u32;
|
|
let _ = abc as u64;
|
|
let _ = abc as u128;
|
|
|
|
// Casting to usize is OK and should not warn
|
|
let _ = abc as usize;
|
|
}
|
|
|
|
fn fn_with_fn_args(f: fn(i32) -> i32) -> i32 {
|
|
f as i32
|
|
}
|
|
|
|
fn main() {}
|