- writeln!(w, "pub extern \"C\" fn {}_to_str(o: &{}) -> Str {{", ident, resolved_path).unwrap();
- writeln!(w, "\tformat!(\"{{}}\", o).into()").unwrap();
+ writeln!(w, "pub extern \"C\" fn {}_to_str(o: &crate::{}) -> Str {{", ident, resolved_path).unwrap();
+
+ let self_ty = &i.self_ty;
+ let ref_type: syn::Type = syn::parse_quote!(&#self_ty);
+ let new_var = types.write_from_c_conversion_new_var(w, &format_ident!("o"), &ref_type, Some(&gen_types));
+ write!(w, "\tformat!(\"{{}}\", ").unwrap();
+ types.write_from_c_conversion_prefix(w, &ref_type, Some(&gen_types));
+ write!(w, "{}o", if new_var { "local_" } else { "" }).unwrap();
+ types.write_from_c_conversion_suffix(w, &ref_type, Some(&gen_types));
+ writeln!(w, ").into()").unwrap();
+