[PYTHON MATRIX-SIG] A bug in 1.0a5 (ones, concatenate)

Konrad Hinsen hinsen@ibs.ibs.fr
Tue, 26 Nov 96 19:14:10 +0100


> This produces a segmentation fault:
> 
> 	concatenate([ones([0,10]),ones([1,10])])
> 
> This does not:
>       
>         concatenate([zeros([0,10]),ones([1,10])])
> 
> I'm using Linux, Python 1.4 and 1.0a5 with fixed ellipses.

Same under HP/UX. And there are other operations with empty arrays
that cause crashes.

In case you wonder what the difference between ones() and zeros()
is: zeros() is implemented in C; ones() is implemented in Python
as, essentially, zero()+1. It might be the addition that ultimately
causes the crash.

Konrad.
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