jsuereth/binary-resilience — pull request #1 by harrah (2012-04-16 20:23:09+00:00)
Title: new lazy val in parent class

The failure mode is that the addition of A.a2 without recompiling B makes them share a bit in the mask. The B.b lazy val initialization is never invoked because A.a2 was initialized first, setting the bit in the mask.