doc: explain why it is unsafe to construct Vec<u8> from Vec<u16>#65873

Merged

bors merged 1 commit intorust-lang:masterfrom tesuji:doc-vec-from-raw-parts

Oct 28, 2019

+5-1

Commits on Oct 27, 2019

doc: explain why it is unsafe to construct Vec<u8> from Vec<u16>

tesuji
and
steveklabnik
committed