An issue was discovered in the slice-deque crate through 2021-02-19 for Rust. A double drop can occur in SliceDeque::drain_filter upon a panic in a predicate function.

Affected: crates.io: slice-deque

An issue was discovered in the slice-deque crate through 2021-02-19 for Rust. A double drop can occur in SliceDeque::drain_filter upon a panic in a predicate function.

Affected: crates.io: slice-deque

Affected versions of the crate incremented the current index of the drain filter iterator *before* calling the predicate function `self.pred`.

If the predicate function panics, it is possible for the last element in the iterator to be dropped twice.