rust/tests/ui/closures/return-value-lifetime-error.rs

17 lines
394 B
Rust

//@ run-rustfix
use std::collections::HashMap;
fn main() {
let vs = vec![0, 0, 1, 1, 3, 4, 5, 6, 3, 3, 3];
let mut counts = HashMap::new();
for num in vs {
let count = counts.entry(num).or_insert(0);
*count += 1;
}
let _ = counts.iter().max_by_key(|(_, v)| v);
//~^ ERROR lifetime may not live long enough
//~| HELP dereference the return value
}