Hi,

The following code produces the wrong result, and I cannot figure out why:

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A.row(i).dot(c);


A is an Eigen::SparseMatrix<double> and c is Eigen::VectorXd. However, if I copy the contents of row i of A into a vector beforehand, as

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VectorXd r = A.row(i);
r.dot(c);


I obtain correct results.

I am using Eigen 3.2.8.

Is this a know bug, or am I missing something obvious here?

Jens

Please update to 3.2.10 or 3.3.1.

The behavior is correct in Eigen 3.3.1. Thanks.