This was revealed while extending the unit tests for Bug 792.
To reproduce, activate rank deficiency checking in the sparselu testcase.
Summary: Fix AMD ordering when a column has only one off-diagonal non-zero (also fix bug 1045)
-- GitLab Migration Automatic Message --
This bug has been migrated to gitlab.com's GitLab instance and has been closed from further activity.
You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.com/libeigen/eigen/issues/1045.