When this temporary object is destoryed?Before entry the function or after the function returned?

When this temporary object(CTest()) is destoryed?Before entry the function(fooFunc) or after the function(fooFunc) returned?

I know the code below is not right indeed(Thank you,asmmo. ). The reason is that:

"The idea is that a function taking a non-const reference parameter is stating that it wants to modify the parameter and allowing it to go back to the caller. Doing so with a temporary is meaningless and most likely an error."

I would be thankful for any hint about this question.

class CTest;
void fooFunc(CTest&){};
fooFunc(CTest());