rust-lang/rust — pull request #17731 by bkoropoff (2014-10-03 04:16:03+00:00)
Title: Make capture-by-ref unboxed closures work

This began as an attempt to fix an ICE in borrowck (issue #17655), but the rabbit hole went pretty deep. I ended up plumbing support for capture-by-reference unboxed closures all the way into trans.

Closes issue #17655.