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Add test case from #10488

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This commit is contained in:
Michael Schubart 2023-03-12 14:59:10 +00:00
parent 008ba7326b
commit 3d711455c2
2 changed files with 19 additions and 7 deletions
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8
tests/ui/collection_is_never_read.rs
View file

@ -84,12 +84,18 @@ fn shadowing_2() {
} }
#[allow(clippy::let_unit_value)] #[allow(clippy::let_unit_value)]
fn fake_read() { fn fake_read_1() {
let mut x = vec![1, 2, 3]; // WARNING let mut x = vec![1, 2, 3]; // WARNING
x.reverse(); x.reverse();
let _: () = x.clear(); let _: () = x.clear();
} }
fn fake_read_2() {
let mut x = vec![1, 2, 3]; // WARNING
x.reverse();
println!("{:?}", x.push(5));
}
fn assignment() { fn assignment() {
let mut x = vec![1, 2, 3]; // WARNING let mut x = vec![1, 2, 3]; // WARNING
let y = vec![4, 5, 6]; // Ok let y = vec![4, 5, 6]; // Ok

18
tests/ui/collection_is_never_read.stderr
View file

@ -37,34 +37,40 @@ LL | let mut x = vec![1, 2, 3]; // WARNING
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: collection is never read error: collection is never read
--> $DIR/collection_is_never_read.rs:101:5 --> $DIR/collection_is_never_read.rs:100:5
| |
LL | let mut x = vec![1, 2, 3]; // WARNING LL | let mut x = vec![1, 2, 3]; // WARNING
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: collection is never read error: collection is never read
--> $DIR/collection_is_never_read.rs:118:5 --> $DIR/collection_is_never_read.rs:107:5
|
LL | let mut x = vec![1, 2, 3]; // WARNING
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: collection is never read
--> $DIR/collection_is_never_read.rs:124:5
| |
LL | let mut x = HashSet::new(); // WARNING LL | let mut x = HashSet::new(); // WARNING
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: collection is never read error: collection is never read
--> $DIR/collection_is_never_read.rs:132:5 --> $DIR/collection_is_never_read.rs:138:5
| |
LL | let x = vec![1, 2, 3]; // WARNING LL | let x = vec![1, 2, 3]; // WARNING
| ^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^
error: collection is never read error: collection is never read
--> $DIR/collection_is_never_read.rs:168:5 --> $DIR/collection_is_never_read.rs:174:5
| |
LL | let mut s = String::new(); LL | let mut s = String::new();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^
error: collection is never read error: collection is never read
--> $DIR/collection_is_never_read.rs:181:5 --> $DIR/collection_is_never_read.rs:187:5
| |
LL | let mut s = String::from("Hello, World!"); LL | let mut s = String::from("Hello, World!");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 11 previous errors error: aborting due to 12 previous errors