On Mon, Feb 25, 2008 at 11:34 AM, Gail Carmichael
<gail.banaszkiewicz@...400...> wrote:
  

 I was just wondering - is there any way to know when it stopped working?
    

Usually this is found by bisection: if at date X it worked and at Y it
didn't, check at date (X+Y)/2; if it works then, make that date the
new Y, otherwise the new X, and repeat. This converges pretty fast,
although you will still spend many hours recompiling because our
codebase changes very intensively.