bors 14f0942a49 Auto merge of #22532 - pnkfelix:arith-overflow, r=pnkfelix,eddyb
Rebase and follow-through on work done by @cmr and @aatch.

Implements most of rust-lang/rfcs#560. Errors encountered from the checks during building were fixed.

The checks for division, remainder and bit-shifting have not been implemented yet.

See also PR #20795

cc @Aatch ; cc @nikomatsakis
2015-03-03 14:18:03 +00:00
..
2015-03-02 13:22:03 -08:00