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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/tools/clippy/tests/ui/for_kv_map.rs | |
parent | Initial commit. (diff) | |
download | rustc-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/for_kv_map.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/for_kv_map.rs | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/for_kv_map.rs b/src/tools/clippy/tests/ui/for_kv_map.rs new file mode 100644 index 000000000..39a8d960a --- /dev/null +++ b/src/tools/clippy/tests/ui/for_kv_map.rs @@ -0,0 +1,50 @@ +#![warn(clippy::for_kv_map)] +#![allow(clippy::used_underscore_binding)] + +use std::collections::*; +use std::rc::Rc; + +fn main() { + let m: HashMap<u64, u64> = HashMap::new(); + for (_, v) in &m { + let _v = v; + } + + let m: Rc<HashMap<u64, u64>> = Rc::new(HashMap::new()); + for (_, v) in &*m { + let _v = v; + // Here the `*` is not actually necessary, but the test tests that we don't + // suggest + // `in *m.values()` as we used to + } + + let mut m: HashMap<u64, u64> = HashMap::new(); + for (_, v) in &mut m { + let _v = v; + } + + let m: &mut HashMap<u64, u64> = &mut HashMap::new(); + for (_, v) in &mut *m { + let _v = v; + } + + let m: HashMap<u64, u64> = HashMap::new(); + let rm = &m; + for (k, _value) in rm { + let _k = k; + } + + // 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; + } +} |