If @child is at the toplevel, and doesn’t have a parent, then
@iter is set to an invalid iterator and %FALSE is returned.
@child will remain a valid node after this function has been
called.
@iter will be initialized before the lookup is performed, so @child
and @iter cannot point to the same memory location.
Sets @iter to be the parent of @child.
If @child is at the toplevel, and doesn’t have a parent, then @iter is set to an invalid iterator and %FALSE is returned. @child will remain a valid node after this function has been called.
@iter will be initialized before the lookup is performed, so @child and @iter cannot point to the same memory location.