Fix underflow in specialized ZipImpl::size_hint#82289

Merged

bors merged 3 commits intorust-lang:masterfrom

SkiFire13:fix-issue-82282

Mar 5, 2021

Commits on Mar 3, 2021

Increment self.len in specialized ZipImpl to avoid underflow in size_hint
SkiFire13
committed
Add test for underflow in specialized Zip's size_hint
SkiFire13
committed
Remove useless comparison since now self.index <= self.len is an invariant
SkiFire13
committed