70 lines
1.3 KiB
Rust
70 lines
1.3 KiB
Rust
#![allow(unused)]
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#![warn(clippy::let_and_return)]
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fn test() -> i32 {
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let _y = 0; // no warning
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let x = 5;
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x
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}
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fn test_inner() -> i32 {
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if true {
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let x = 5;
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x
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} else {
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0
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}
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}
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fn test_nowarn_1() -> i32 {
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let mut x = 5;
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x += 1;
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x
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}
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fn test_nowarn_2() -> i32 {
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let x = 5;
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x + 1
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}
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fn test_nowarn_3() -> (i32, i32) {
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// this should technically warn, but we do not compare complex patterns
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let (x, y) = (5, 9);
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(x, y)
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}
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fn test_nowarn_4() -> i32 {
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// this should technically warn, but not b/c of clippy::let_and_return, but b/c of useless type
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let x: i32 = 5;
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x
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}
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fn test_nowarn_5(x: i16) -> u16 {
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#[allow(clippy::cast_possible_truncation, clippy::cast_sign_loss)]
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let x = x as u16;
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x
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}
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// False positive example
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trait Decode {
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fn decode<D: std::io::Read>(d: D) -> Result<Self, ()>
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where
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Self: Sized;
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}
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macro_rules! tuple_encode {
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($($x:ident),*) => (
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impl<$($x: Decode),*> Decode for ($($x),*) {
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#[inline]
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#[allow(non_snake_case)]
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fn decode<D: std::io::Read>(mut d: D) -> Result<Self, ()> {
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// Shouldn't trigger lint
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Ok(($({let $x = Decode::decode(&mut d)?; $x }),*))
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}
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}
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);
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}
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tuple_encode!(T0, T1, T2, T3, T4, T5, T6, T7);
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fn main() {}
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