https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127641
--- Comment #2 from 3440910457 at qq dot com --- Created attachment 65712 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=65712&action=edit Testcase with timing Testcase with timing. Testcase output in my environment: std::function cost: 80510us std::move_only_function cost: 122749us std::function cost: 84592us std::move_only_function cost: 124939us std::function cost: 81196us std::move_only_function cost: 123324us
