mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-05 02:50:32 +00:00
58 lines
1.2 KiB
Rust
58 lines
1.2 KiB
Rust
// run-rustfix
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#![deny(clippy::identity_conversion)]
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fn test_generic<T: Copy>(val: T) -> T {
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let _ = val;
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val
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}
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fn test_generic2<T: Copy + Into<i32> + Into<U>, U: From<T>>(val: T) {
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// ok
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let _: i32 = val.into();
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let _: U = val.into();
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let _ = U::from(val);
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}
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fn test_questionmark() -> Result<(), ()> {
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{
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let _: i32 = 0i32;
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Ok(Ok(()))
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}??;
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Ok(())
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}
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fn test_issue_3913() -> Result<(), std::io::Error> {
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use std::fs;
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use std::path::Path;
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let path = Path::new(".");
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for _ in fs::read_dir(path)? {}
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Ok(())
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}
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fn main() {
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test_generic(10i32);
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test_generic2::<i32, i32>(10i32);
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test_questionmark().unwrap();
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test_issue_3913().unwrap();
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let _: String = "foo".into();
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let _: String = From::from("foo");
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let _ = String::from("foo");
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#[allow(clippy::identity_conversion)]
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{
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let _: String = "foo".into();
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let _ = String::from("foo");
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let _ = "".lines().into_iter();
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}
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let _: String = "foo".to_string();
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let _: String = "foo".to_string();
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let _ = "foo".to_string();
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let _ = format!("A: {:04}", 123);
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let _ = "".lines();
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let _ = vec![1, 2, 3].into_iter();
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let _: String = format!("Hello {}", "world");
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}
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