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Fix sparse intersect bug, add more sparse / dense tests

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This commit is contained in:
Will Crichton 2021-08-26 11:39:13 -07:00
parent 1c1603e0b5
commit d73a169f93
2 changed files with 13 additions and 2 deletions
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2
compiler/rustc_index/src/bit_set.rs
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@ -272,7 +272,7 @@ fn dense_sparse_intersect<T: Idx>(
sparse: &SparseBitSet<T>,
) -> (SparseBitSet<T>, bool) {
let mut sparse_copy = sparse.clone();
sparse_intersect(&mut sparse_copy, |el| !dense.contains(*el));
sparse_intersect(&mut sparse_copy, |el| dense.contains(*el));
let n = sparse_copy.len();
(sparse_copy, n != dense.count())
}