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//@aux-build:proc_macros.rs
#![feature(rustc_private)]
#![warn(clippy::iter_over_hash_type)]
use std::collections::{HashMap, HashSet};
extern crate rustc_data_structures;
extern crate proc_macros;
fn main() {
let mut hash_set = HashSet::<i32>::new();
let mut hash_map = HashMap::<i32, i32>::new();
let mut fx_hash_map = rustc_data_structures::fx::FxHashMap::<i32, i32>::default();
let mut fx_hash_set = rustc_data_structures::fx::FxHashMap::<i32, i32>::default();
let vec = Vec::<i32>::new();
// test hashset
for x in &hash_set {
let _ = x;
}
for x in hash_set.iter() {
let _ = x;
}
for x in hash_set.clone() {
let _ = x;
}
for x in hash_set.drain() {
let _ = x;
}
// test hashmap
for (x, y) in &hash_map {
let _ = (x, y);
}
for x in hash_map.keys() {
let _ = x;
}
for x in hash_map.values() {
let _ = x;
}
for x in hash_map.values_mut() {
*x += 1;
}
for x in hash_map.iter() {
let _ = x;
}
for x in hash_map.clone() {
let _ = x;
}
for x in hash_map.drain() {
let _ = x;
}
// test type-aliased hashers
for x in fx_hash_set {
let _ = x;
}
for x in fx_hash_map {
let _ = x;
}
// shouldnt fire
for x in &vec {
let _ = x;
}
for x in vec {
let _ = x;
}
// should not lint, this comes from an external crate
proc_macros::external! {
for _ in HashMap::<i32, i32>::new() {}
}
}
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