rust/tests/ui/map_clone.fixed
Michael Wright b15b977d76 Fix map_clone false positive
Don't lint when the item type is not a reference. `copied` only applies
to references.
2019-12-22 11:26:51 +02:00

36 lines
1.1 KiB
Rust

// run-rustfix
#![warn(clippy::all, clippy::pedantic)]
#![allow(clippy::iter_cloned_collect)]
#![allow(clippy::clone_on_copy, clippy::redundant_clone)]
#![allow(clippy::missing_docs_in_private_items)]
#![allow(clippy::redundant_closure_for_method_calls)]
fn main() {
let _: Vec<i8> = vec![5_i8; 6].iter().copied().collect();
let _: Vec<String> = vec![String::new()].iter().cloned().collect();
let _: Vec<u32> = vec![42, 43].iter().copied().collect();
let _: Option<u64> = Some(Box::new(16)).map(|b| *b);
let _: Option<u64> = Some(&16).copied();
let _: Option<u8> = Some(&1).copied();
// Don't lint these
let v = vec![5_i8; 6];
let a = 0;
let b = &a;
let _ = v.iter().map(|_x| *b);
let _ = v.iter().map(|_x| a.clone());
let _ = v.iter().map(|&_x| a);
// Issue #498
let _ = std::env::args();
// Issue #4824 item types that aren't references
{
use std::rc::Rc;
let o: Option<Rc<u32>> = Some(Rc::new(0_u32));
let _: Option<u32> = o.map(|x| *x);
let v: Vec<Rc<u32>> = vec![Rc::new(0_u32)];
let _: Vec<u32> = v.into_iter().map(|x| *x).collect();
}
}