Before JDK-8365501 abstract methods used to have a special AdapterHandlerEntry that would return would return address of SharedRuntime::_wrong_method_abstract_blob when Method::get_c2i_unverified_entry() is called and nullptr when Method::get_c2i_no_clinit_check_entry() is called. But this is no longer the case after JDK-8365501 which removed the special AdapterHandlerEntry and replaced it with is_abstract() checks in the Method::get_i2c_entry() and Method::get_c2i_entry() methods.
But the is_abstact() check in missing in Method::get_c2i_unverified_entry() and Method::get_c2i_no_clinit_check_entry().