Commit 4fee1799 authored by Wenzel Jakob's avatar Wenzel Jakob
Browse files

better debug info when arg::operator=() fails

parent 4f8902a9
......@@ -229,11 +229,21 @@ struct process_attribute<arg_t<T>> : process_attribute_default<arg_t<T>> {
object o = object(detail::type_caster<typename detail::intrinsic_type<T>::type>::cast(
a.value, return_value_policy::automatic, handle()), false);
if (!o)
pybind11_fail("arg(): could not convert default keyword "
"argument into a Python object (type not "
"registered yet?)");
if (!o) {
#if !defined(NDEBUG)
std::string descr(typeid(T).name());
detail::clean_type_id(descr);
if (r->class_)
descr += " in method of " + (std::string) r->class_.str();
pybind11_fail("arg(): could not convert default keyword argument "
"of type " + descr +
" into a Python object (type not registered yet?)");
#else
pybind11_fail("arg(): could not convert default keyword argument "
"into a Python object (type not registered yet?). "
"Compile in debug mode for more information.");
#endif
}
r->args.emplace_back(a.name, a.descr, o.release());
}
};
......
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