lampepfl/dotty — pull request #197 by DarkDimius (2014-10-22 11:51:56+00:00)
Title: Fix #196. Errorneus tail-optimization of inner DefDef's

Unless a DefDef is a result of desugaring an exception handler it shouldn't be optimized by tailrec.

There's a potential improvement here: to detect that a DefDef
is a label def which itself is called only in tail position.

This is a requirement to implement #194