Latest commit aa05a15 Aug 28, 2016 @bors bors committed on GitHub Auto merge of #36027 - eddyb:unsized-prefix, r=nagisa
rustc_trans: don't round up the DST prefix size to its alignment.

Fixes #35815 by using `ty::layout` and `min_size` to compute the size of the DST prefix.
`ty::layout::Struct::min_size` is not rounded up to alignment, which could be smaller for the DST field.