[Numpy-discussion] Error in deallocation ?

[Travis E. Oliphant]

Matthieu Brucher wrote:
> Hi
>
> I keep on getting this error :
>
> *** Reference count error detected:
> an attempt was made to deallocate 7 (l) ***
>
> It happens on numpy calls (multiplications, call to inner(), ...), but 
> I didn't find the real reason. I'm using Numpy ' 1.0.4.dev3875' with 
> Python 2.5.1.
>
> Someone has a hint to solve this ?

The problem is that there is a data-type reference counting error some 
where that is attempting to deallocate the built-in data-type 'l' 

It's not really a Python error but a logging.  The code won't let you 
deallocate the built-ins, but it will tell you that something tried to.

Reference counting on data-types is easy to get wrong (particularly with 
Pyrex extension modules) because most calls consume a reference to the 
data-type (if they return an object that  contains a reference to the 
data-type).

It is a bug, and it would be nice to figure it out, but that would 
require the code that caused it.

Thanks,

-Travis O.