tree 405df1f63b219cdb7015409e4ce26bab3e764404
parent e804a3cf256106c097d44f6e0212cd183122da07
parent fbabe616413d34c1ab68668de34de4322d963b93
author bors <bors@rust-lang.org> 1470336687 -0700
committer GitHub <noreply@github.com> 1470336687 -0700

Auto merge of #35300 - eddyb:mir-neg-overflow, r=arielb1

rustc_trans: don't Assert(Overflow(Neg)) when overflow checks are off.

Generic functions using `Neg` on primitive types would panic even in release mode, with MIR trans.
The solution is a bit hacky, as I'm checking the message, since there's no dedicated `CheckedUnOp`.

Blocks Servo rustup ([failure #1](http://build.servo.org/builders/linux-rel/builds/2477/steps/test_3/logs/stdio), [failure #2](http://build.servo.org/builders/mac-rel-css/builds/2364/steps/test/logs/stdio)) - this should be the last hurdle, it affects only one test.