Je dois me tromper mais j'ai l'impression qu'il a du mal à retrouver le type concret de l'image dans l'exemple ci-dessous. Est-ce normal docteur ? $ g++ --version g++ (GCC) 3.3.2 (Debian) $ cat olena-bug.cc #include <iostream> #include <oln/basics2d.hh> class foo { }; int main() { oln::image2d< foo > i(60, 60); std::cout << i.hold(0, 0) << std::endl; return 0; } $ g++ -I/home/sylvain/works/lrde/olena-0.9/integre \ -I/home/sylvain/works/lrde/olena-0.9/metalic \ -I/home/sylvain/works/lrde/olena-0.9/olena olena-bug.cc => OK $ g++ -I/home/sylvain/works/lrde/olena-0.10/integre \ -I/home/sylvain/works/lrde/olena-0.10/metalic \ -I/home/sylvain/works/lrde/olena-0.10/olena olena-bug.cc olena-bug.cc: In function `int main()': olena-bug.cc:34: error: no matching function for call to `oln::image2d<foo, mlc::final>::hold(int, int)' /home/sylvain/works/lrde/olena-0.10/olena/oln/core/abstract/image.hh:103: error: candidates are: bool oln::abstract::image<Exact>::hold(const oln::abstract::point<typename oln::image_traits<Ima>::point_type>&) const [with Exact = oln::image2d<foo, mlc::final>] -- sylvain