Let
t be an object of a type that is a specialization of
function,
copyable_function, or
move_only_function,
such that the target object
x of
t has a type that
is a specialization of
function,
copyable_function, or
move_only_function. Each argument of the
invocation of
x evaluated as part of the invocation of
t
may alias an argument in the same position in the invocation of
t that
has the same type, even if the corresponding parameter is not of reference type
.