Use addr_of_mut instead

src/types/mod.rs

@@ -148,7 +148,11 @@ macro_rules! pyobject_native_type_info(
                 // Create a very short lived mutable reference and directly
                 // cast it to a pointer: no mutable references can be aliasing
                 // because we hold the GIL.
+                #[cfg(not(addr_of))]
                 unsafe { &mut $typeobject }
+
+                #[cfg(addr_of)]
+                unsafe { ::std::ptr::addr_of_mut!($typeobject) }
             }
 
             $(