mozilla/rust — pull request #11661 by huonw (2014-01-19 07:47:21+00:00)
Title: rustc: check instantiability of fixed length vectors properly.

Previously, they were treated like ~[] and &[] (which can have length
0), but fixed length vectors are fixed length, i.e. we know at compile
time if it's possible to have length zero (which is only for [T, .. 0]).

Fixes #11659.