const_qualified_block_method_retval_1.cpp revision c981c48f5bc9aefeffc0bcb0cc3934c2fae179dd 
1#include "../Eigen/Core"
2
3#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
4#define CV_QUALIFIER const
5#else
6#define CV_QUALIFIER
7#endif
8
9using namespace Eigen;
10
11void foo(CV_QUALIFIER Matrix3d &m){
12    Block<Matrix3d> b(m.block(0,0,3,3));
13}
14
15int main() {}
16