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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/tools/clippy/tests/ui/iter_with_drain.fixed
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/tools/clippy/tests/ui/iter_with_drain.fixed')
-rw-r--r--src/tools/clippy/tests/ui/iter_with_drain.fixed65
1 files changed, 65 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/iter_with_drain.fixed b/src/tools/clippy/tests/ui/iter_with_drain.fixed
new file mode 100644
index 000000000..0330d5549
--- /dev/null
+++ b/src/tools/clippy/tests/ui/iter_with_drain.fixed
@@ -0,0 +1,65 @@
+// run-rustfix
+// will emits unused mut warnings after fixing
+#![allow(unused_mut)]
+// will emits needless collect warnings after fixing
+#![allow(clippy::needless_collect)]
+#![warn(clippy::iter_with_drain)]
+use std::collections::{BinaryHeap, HashMap, HashSet, VecDeque};
+
+fn full() {
+ let mut a = vec!["aaa".to_string(), "bbb".to_string()];
+ let mut a: BinaryHeap<_> = a.into_iter().collect();
+ let mut a: HashSet<_> = a.drain().collect();
+ let mut a: VecDeque<_> = a.drain().collect();
+ let mut a: Vec<_> = a.into_iter().collect();
+ let mut a: HashMap<_, _> = a.into_iter().map(|x| (x.clone(), x)).collect();
+ let _: Vec<(String, String)> = a.drain().collect();
+}
+
+fn closed() {
+ let mut a = vec!["aaa".to_string(), "bbb".to_string()];
+ let mut a: BinaryHeap<_> = a.into_iter().collect();
+ let mut a: HashSet<_> = a.drain().collect();
+ let mut a: VecDeque<_> = a.drain().collect();
+ let mut a: Vec<_> = a.into_iter().collect();
+ let mut a: HashMap<_, _> = a.into_iter().map(|x| (x.clone(), x)).collect();
+ let _: Vec<(String, String)> = a.drain().collect();
+}
+
+fn should_not_help() {
+ let mut a = vec!["aaa".to_string(), "bbb".to_string()];
+ let mut a: BinaryHeap<_> = a.drain(1..).collect();
+ let mut a: HashSet<_> = a.drain().collect();
+ let mut a: VecDeque<_> = a.drain().collect();
+ let mut a: Vec<_> = a.drain(..a.len() - 1).collect();
+ let mut a: HashMap<_, _> = a.drain(1..a.len() - 1).map(|x| (x.clone(), x)).collect();
+ let _: Vec<(String, String)> = a.drain().collect();
+
+ let mut b = vec!["aaa".to_string(), "bbb".to_string()];
+ let _: Vec<_> = b.drain(0..a.len()).collect();
+}
+
+fn _closed_range(mut x: Vec<String>) {
+ let _: Vec<String> = x.drain(0..=x.len()).collect();
+}
+
+fn _with_mut(x: &mut Vec<String>, y: &mut VecDeque<String>) {
+ let _: Vec<String> = x.drain(..).collect();
+ let _: Vec<String> = y.drain(..).collect();
+}
+
+#[derive(Default)]
+struct Bomb {
+ fire: Vec<u8>,
+}
+
+fn should_not_help_0(bomb: &mut Bomb) {
+ let _: Vec<u8> = bomb.fire.drain(..).collect();
+}
+
+fn main() {
+ full();
+ closed();
+ should_not_help();
+ should_not_help_0(&mut Bomb::default());
+}