// This crashes OpenSCAD including 2011.06 in PolyReducer due to two vertices of
// a triangle evaluating to the same index
linear_extrude(height=2)
polygon(points=[[0, 0],
[1, 0],
[1.0014, 1],
[1, 1],
[0, 1]],
paths=[[0,1,2,3,4]]);