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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/test/ui/nll/mutating_references.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/test/ui/nll/mutating_references.rs')
-rw-r--r-- | src/test/ui/nll/mutating_references.rs | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/nll/mutating_references.rs b/src/test/ui/nll/mutating_references.rs new file mode 100644 index 000000000..eb46b30b6 --- /dev/null +++ b/src/test/ui/nll/mutating_references.rs @@ -0,0 +1,24 @@ +// run-pass + +struct List<T> { + value: T, + next: Option<Box<List<T>>>, +} + +fn to_refs<T>(mut list: &mut List<T>) -> Vec<&mut T> { + let mut result = vec![]; + loop { + result.push(&mut list.value); + if let Some(n) = list.next.as_mut() { + list = n; + } else { + return result; + } + } +} + +fn main() { + let mut list = List { value: 1, next: None }; + let vec = to_refs(&mut list); + assert_eq!(vec![&mut 1], vec); +} |