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Add ui/for_kv_map test for false positive in #1279

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Marcin S 2019-01-03 19:07:21 +01:00
parent 5b8b01e8dc
commit 5f0d46cd48
1 changed files with 7 additions and 4 deletions
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11
tests/ui/for_kv_map.rs
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@ -42,15 +42,18 @@ fn main() {
for (k, _value) in rm {
let _k = k;
}
test_for_kv_map();
}
fn test_for_kv_map() {
// The following should not produce warnings.
let m: HashMap<u64, u64> = HashMap::new();
// No error, _value is actually used
for (k, _value) in &m {
let _ = _value;
let _k = k;
}
let m: HashMap<u64, String> = Default::default();
for (_, v) in m {
let _v = v;
}
}