You get an error that tail call can't be performed which is kind of the point of tailcall attribute. Same thing with regular c++ destructors or dozen other lang

You get an error that tail call can't be performed which is kind of the point of tailcall attribute. Same thing with regular c++ destructors or dozen other language features which interfere with tail calls, no need for extensions like __attribute__((cleanup()). https://godbolt.org/z/Yex74Wjz7 https://godbolt.org/z/Yex74Wjz7