ZeroizeOnDrop for Vec only wipes the length, not the capacity

[CodesInChaos]

Using Zeroize to wipe a Vec wipes the full capacity. But ZeroizeOnDrop only calls drop for valid items, i.e. up to length. The remainder will remain intact. The documentation should call out that pitfall.

[tarcieri]

Sorry, are you talking about custom derive here? ZeroizeOnDrop is a marker trait which otherwise doesn't do anything itself.

Can you provide a complete code example which reproduces the problem?

[tarcieri]

Cannot reproduce