Ambigous overload resolution #203
Description
The following snippet fails to compile
#include "xtensor-python/pyarray.hpp"
#include "xtensor-python/pytensor.hpp"
auto xtensor_test(xt::pytensor<double, 3>& arr, xt::xtensor<double, 3> const& x) {
arr /= x;
return arr;
}while this one is OK
#include "xtensor-python/pyarray.hpp"
#include "xtensor-python/pytensor.hpp"
auto xtensor_test(xt::pytensor<double, 3>& arr, xt::xtensor<double, 3> const& x) {
arr = arr / x;
return arr;
}tested with clang 6 and gcc 8, xtensor 0.20.8 and xtensor-python 0.23.1
Error log:
In file included from /home/sguelton/.venvs/numpy-benchmarks/include/xtensor-python/pyarray.hpp:20,
from a.cpp:2:
/home/sguelton/.venvs/numpy-benchmarks/include/xtensor-python/pycontainer.hpp: In instantiation of ‘class xt::pycontainer<xt::pytensor<double, 3> >’:
/home/sguelton/.venvs/numpy-benchmarks/include/xtensor-python/pytensor.hpp:143:11: required from ‘class xt::pytensor<double, 3>’
a.cpp:6:11: required from here
/home/sguelton/.venvs/numpy-benchmarks/include/xtensor-python/pycontainer.hpp:53:11: warning: ‘xt::pycontainer<xt::pytensor<double, 3> >’ declared with greater visibility than its base ‘pybind11::object’ [-Wattributes]
class pycontainer : public pybind11::object,
^~~~~~~~~~~
a.cpp: In function ‘auto xtensor_test(xt::pytensor<double, 3>&, xt::xtensor<double, 3>&)’:
a.cpp:6:11: error: request for member ‘operator/=’ is ambiguous
arr /= x;
^
In file included from /home/sguelton/.venvs/numpy-benchmarks/include/xtensor-python/pyarray.hpp:18,
from a.cpp:2:
/home/sguelton/.venvs/numpy-benchmarks/include/xtensor/xsemantic.hpp:74:23: note: candidates are: ‘template<class E> xt::xsemantic_base<D>::derived_type& xt::xsemantic_base<D>::operator/=(const xt::xexpression<E1>&) [with E = E; D = xt::pytensor<double, 3>]’
derived_type& operator/=(const xexpression<E>&);
^~~~~~~~
/home/sguelton/.venvs/numpy-benchmarks/include/xtensor/xsemantic.hpp:50:47: note: ‘template<class E> xt::disable_xexpression<E, typename xt::xexpression<E>::derived_type&> xt::xsemantic_base<D>::operator/=(const E&) [with E = E; D = xt::pytensor<double, 3>]’
disable_xexpression<E, derived_type&> operator/=(const E&);
^~~~~~~~
In file included from /home/sguelton/.venvs/numpy-benchmarks/include/pybind11/cast.h:13,
from /home/sguelton/.venvs/numpy-benchmarks/include/pybind11/attr.h:13,
from /home/sguelton/.venvs/numpy-benchmarks/include/pybind11/pybind11.h:44,
from /home/sguelton/.venvs/numpy-benchmarks/include/pybind11/complex.h:12,
from /home/sguelton/.venvs/numpy-benchmarks/include/xtensor-python/pycontainer.hpp:16,
from /home/sguelton/.venvs/numpy-benchmarks/include/xtensor-python/pyarray.hpp:20,
from a.cpp:2:
/home/sguelton/.venvs/numpy-benchmarks/include/pybind11/pytypes.h:134:12: note: ‘pybind11::object pybind11::detail::object_api<Derived>::operator/=(const pybind11::detail::object_api<Derived>&) const [with Derived = pybind11::handle]’
object operator/=(object_api const &other) const;
^~~~~~~~