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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:32 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:32 +0000 |
commit | 4547b622d8d29df964fa2914213088b148c498fc (patch) | |
tree | 9fc6b25f3c3add6b745be9a2400a6e96140046e9 /library/alloc/src/collections/btree | |
parent | Releasing progress-linux version 1.66.0+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-4547b622d8d29df964fa2914213088b148c498fc.tar.xz rustc-4547b622d8d29df964fa2914213088b148c498fc.zip |
Merging upstream version 1.67.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'library/alloc/src/collections/btree')
-rw-r--r-- | library/alloc/src/collections/btree/map.rs | 4 | ||||
-rw-r--r-- | library/alloc/src/collections/btree/node/tests.rs | 1 |
2 files changed, 3 insertions, 2 deletions
diff --git a/library/alloc/src/collections/btree/map.rs b/library/alloc/src/collections/btree/map.rs index 8a7719347..1d9c4460e 100644 --- a/library/alloc/src/collections/btree/map.rs +++ b/library/alloc/src/collections/btree/map.rs @@ -46,8 +46,8 @@ pub(super) const MIN_LEN: usize = node::MIN_LEN_AFTER_SPLIT; /// is done is *very* inefficient for modern computer architectures. In particular, every element /// is stored in its own individually heap-allocated node. This means that every single insertion /// triggers a heap-allocation, and every single comparison should be a cache-miss. Since these -/// are both notably expensive things to do in practice, we are forced to at very least reconsider -/// the BST strategy. +/// are both notably expensive things to do in practice, we are forced to, at the very least, +/// reconsider the BST strategy. /// /// A B-Tree instead makes each node contain B-1 to 2B-1 elements in a contiguous array. By doing /// this, we reduce the number of allocations by a factor of B, and improve cache efficiency in diff --git a/library/alloc/src/collections/btree/node/tests.rs b/library/alloc/src/collections/btree/node/tests.rs index aadb0dc9c..64bce0ff8 100644 --- a/library/alloc/src/collections/btree/node/tests.rs +++ b/library/alloc/src/collections/btree/node/tests.rs @@ -94,6 +94,7 @@ fn test_partial_eq() { #[test] #[cfg(target_arch = "x86_64")] +#[cfg_attr(miri, ignore)] // We'd like to run Miri with layout randomization fn test_sizes() { assert_eq!(core::mem::size_of::<LeafNode<(), ()>>(), 16); assert_eq!(core::mem::size_of::<LeafNode<i64, i64>>(), 16 + CAPACITY * 2 * 8); |