[pure-lang-users] Runaway trains

[John L. <joh...@gm...>]

Hey guys,
I was playing round with the symbolic computation stuff from the
examples, and had the idea of trying to reduce -(a) to -a.
So I entered the following line:
-(a) = -a;
I had a bad feeling about that, but went with it anyway. When I tried
to test it with:
-(a);
Pure instantly took almost 100% of my processor and went into what I
presume was an infinite loop. I had seen this coming, of course.
Another time I tried it, Pure just quit with no error. Memory usage
seems to remain constant.

Should runaway things like this be detected or not? I'm guessing not...

John