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[Iasonm <>]

The error is triggered when I call
CGAL::extract_mean_curvature_flow_skeleton(M,s);
where M is a
CGAL::Surface_mesh<CGAL::Exact_predicates_inexact_constructions_kernel::Point>
.

The full error is:
 /usr/local/include/CGAL/Polygon_mesh_processing/measure.h:450: required
from ‘typename CGAL::GetGeomTraits<TriangleMesh,
CGAL::pmp_bgl_named_params&lt;T, Tag, Base> >::type::FT
CGAL::Polygon_mesh_processing::area(const TriangleMesh&, const
CGAL::pmp_bgl_named_params<T, Tag, Base>&) [with TriangleMesh =
CGAL::Polyhedron_3<CGAL::Epick,
CGAL::internal::Skel_polyhedron_items_3&lt;CGAL::SM_Vertex_index>,
CGAL::HalfedgeDS_default, std::allocator<int> >; T = CGAL::Epick; Tag =
CGAL::internal_np::geom_traits_t; Base =
CGAL::pmp_bgl_named_params<CGAL::internal::Point_accessor&lt;CGAL::internal::In_place_list_iterator&lt;CGAL::HalfedgeDS_in_place_list_vertex&lt;CGAL::I_Polyhedron_vertex&lt;CGAL::internal::Skel_HDS_vertex_type&lt;CGAL::HalfedgeDS_list_types&lt;CGAL::Epick,
CGAL::I_Polyhedron_derived_items_3&lt;CGAL::internal::Skel_polyhedron_items_3&lt;CGAL::SM_Vertex_index>
>, std::allocator<int> >, CGAL::Point_3<CGAL::Epick>, long unsigned int,
CGAL::SM_Vertex_index> > >,
std::allocator<CGAL::HalfedgeDS_in_place_list_vertex&lt;CGAL::I_Polyhedron_vertex&lt;CGAL::internal::Skel_HDS_vertex_type&lt;CGAL::HalfedgeDS_list_types&lt;CGAL::Epick,
CGAL::I_Polyhedron_derived_items_3&lt;CGAL::internal::Skel_polyhedron_items_3&lt;CGAL::SM_Vertex_index>
>, std::allocator<int> >, CGAL::Point_3<CGAL::Epick>, long unsigned int,
CGAL::SM_Vertex_index> > > > >, CGAL::Point_3<CGAL::Epick>,
CGAL::Point_3<CGAL::Epick>&>, CGAL::internal_np::vertex_point_t,
boost::no_property>; typename CGAL::GetGeomTraits<TriangleMesh,
CGAL::pmp_bgl_named_params&lt;T, Tag, Base> >::type::FT = double]’

This is triggered because



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