[MLton] cvs commit: OS.Path.joinDirFile does not check argument

[Andreas Rossberg]

I just discovered there is a related bug in toString:

   OS.Path.toString{isAbs=false, vol="", arc="/"}

does not raise InvalidArc either.

-- 
Andreas Rossberg, rossberg@ps.uni-sb.de

Let's get rid of those possible thingies!  -- TB