Fix gcc case

Author: SylvainCorlay

include/xtensor-python/pyarray.hpp

@@ -390,6 +390,20 @@ namespace xt
         static self_type ensure(pybind11::handle h);
         static bool check_(pybind11::handle h);
 
+#if PYBIND11_VERSION_MAJOR == 2 && PYBIND11_VERSION_MINOR >= 3
+        // Prevent ambiguous overload resolution for operators defined for
+        // both xt::xcontainer_semantic and pybind11::object.
+        using semantic_base::operator+=;
+        using semantic_base::operator-=;
+        using semantic_base::operator*=;
+        using semantic_base::operator/=;
+        using semantic_base::operator|=;
+        using semantic_base::operator&=;
+        using semantic_base::operator^=;
+        // using semantic_base::operator<<=;
+        // using semantic_base::operator>>=;
+#endif
+
     private:
 
         inner_shape_type m_shape;

include/xtensor-python/pycontainer.hpp

@@ -140,18 +140,6 @@ namespace xt
         using pybind11::object::operator^;
         using pybind11::object::operator<<;
         using pybind11::object::operator>>;
-
-        // Prevent ambiguous overload resolution for operators defined for
-        // both xt::xcontainer_semantic and pybind11::object.
-        using pybind11::object::operator+=;
-        using pybind11::object::operator-=;
-        using pybind11::object::operator*=;
-        using pybind11::object::operator/=;
-        using pybind11::object::operator|=;
-        using pybind11::object::operator&=;
-        using pybind11::object::operator^=;
-        using pybind11::object::operator<<=;
-        using pybind11::object::operator>>=;
 #endif
     };
 

include/xtensor-python/pytensor.hpp

@@ -194,6 +194,20 @@ namespace xt
         static self_type ensure(pybind11::handle h);
         static bool check_(pybind11::handle h);
 
+#if PYBIND11_VERSION_MAJOR == 2 && PYBIND11_VERSION_MINOR >= 3
+        // Prevent ambiguous overload resolution for operators defined for
+        // both xt::xcontainer_semantic and pybind11::object.
+        using semantic_base::operator+=;
+        using semantic_base::operator-=;
+        using semantic_base::operator*=;
+        using semantic_base::operator/=;
+        using semantic_base::operator|=;
+        using semantic_base::operator&=;
+        using semantic_base::operator^=;
+        // using semantic_base::operator<<=;
+        // using semantic_base::operator>>=;
+#endif
+
     private:
 
         inner_shape_type m_shape;