segfault when running with openblas

[manuschneider]

I got a segmentation fault in certain cases when using openblas 0.3.21
This seems to be a problem with vectorization, where more memory is read than needed in certain cases. This can cause illegal memory access.
The error can occur, for example, in the QL decomposition (used for the canonical form) and in the SVD.

This issue might be related: OpenMathLib/OpenBLAS#4013
The problem can be avoided by not using openblas. Newer versions of openblas seem to have vectorization switched off as well and might work.

This is a problem of openblas and not a bug in this package. I just wanted to inform other users who might run into this issue.