slam_monocular.h about eigen is wrong?

[plumewind]

hello,
friends,I have got a problem:
[build] /usr/local/include/isam/slam_monocular.h:57:29: required from here
[build] /usr/include/eigen3/Eigen/src/Core/util/StaticAssert.h:32:40: error: static assertion failed: FLOATING_POINT_ARGUMENT_PASSED__INTEGER_WAS_EXPECTED
And the code:
Eigen::Vector3d vector() const { Eigen::Vector3d tmp(u, v); return tmp; }
Is that OK?
Thanks a lot.