GHSA-6888-wf7j-34jq: `SegQueue` creates zero value of any type

June 16, 2022

Affected versions of this crate called mem::zeroed() to create values of a user-supplied type T. This is unsound e.g. if T is a reference type (which must be non-null).

The flaw was corrected by avoiding the use of mem::zeroed(), using MaybeUninit instead.

References

github.com/advisories/GHSA-6888-wf7j-34jq
github.com/crossbeam-rs/crossbeam
github.com/crossbeam-rs/crossbeam/pull/458
rustsec.org/advisories/RUSTSEC-2022-0021.html

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