Re: Ediff frequently crashes emacs.

[Richard Stallman]

    Okay, but it should be in that function right since that's the one for
    which "finish" didn't return in any reasonable amount of time?

Perhaps the loop outside that one is the one that does not return.

     Is
    there some easy way to tell it to finish that loop other than stepping
    through it max_process_desc times?

You could use the `until' command or set a breakpoint at the end.