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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 /library/alloc/src/collections/btree/borrow/tests.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 '')
-rw-r--r-- | library/alloc/src/collections/btree/borrow/tests.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/library/alloc/src/collections/btree/borrow/tests.rs b/library/alloc/src/collections/btree/borrow/tests.rs new file mode 100644 index 000000000..56a8434fc --- /dev/null +++ b/library/alloc/src/collections/btree/borrow/tests.rs @@ -0,0 +1,19 @@ +use super::DormantMutRef; + +#[test] +fn test_borrow() { + let mut data = 1; + let mut stack = vec![]; + let mut rr = &mut data; + for factor in [2, 3, 7].iter() { + let (r, dormant_r) = DormantMutRef::new(rr); + rr = r; + assert_eq!(*rr, 1); + stack.push((factor, dormant_r)); + } + while let Some((factor, dormant_r)) = stack.pop() { + let r = unsafe { dormant_r.awaken() }; + *r *= factor; + } + assert_eq!(data, 42); +} |