Created attachment 707 [details] a simple example to reproduce the bug Create an Eigen matrix with Eigen::Map and try to calculate the log of it using development branch of Eigen (3.3+). This will cause the following compile error: error: 'Options' is not a member of 'DerivedEvalTypeClean {aka Eigen::Map<Eigen::Matrix<double, -1, -1>, 0, Eigen::Stride<0, 0> >}' static const int Options = DerivedEvalTypeClean::Options;
Thank you for the report: https://bitbucket.org/eigen/eigen/commits/e797ba999bed
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