[Cython] another error in ExprNodes.py

[Robert Bradshaw]

On Jan 9, 2009, at 10:40 PM, Hoyt Koepke wrote:

> Hello,
>
> In trying to compile a new cython file with a fair bit of code in it,
> I get the following traceback:

[...]

We're getting similar errors trying to compile Sage. A lot of stuff  
was refactored, and I think this is fallout from that. The hope is  
that such bugs will be easy to fix. We need higher coverage in our  
test suite.

> I haven't been able to track down what exactly in my code is causing
> this, but if someone could tell what type of code would invoke the
> above nodes, I'll try to isolate it in my code and write a test case.
>
> I suspect this bit of code in cython hasn't really been tested much,
> per my last email...

It would be really useful to have a mode/mechanism to get the  
position of the code when an error like this occurs. I can think of  
several ways to do it, but all would significantly impact speed.

- Robert