Bill Currie wrote:

...

I might modify this procedure a bit to use the (current) standard way of handling runtime errors (_p_generic and such), but this shouldn't be a problem. However, if you could move the check into the program, this would gain some efficiency.

Shouldn't be too difficult. I'll just have to figure out which expression tree's I need (a call is easier to build, that's all).

Yes, I guess so...

BTW: When I've done all the RTS work, I'll send you a list of all the RTS functions that need checking. Or did you already figure them all out?