point_recv(PG_FUNCTION_ARGS)
{
	StringInfo	buf = (StringInfo) PG_GETARG_POINTER(0);
	Point	   *point;

	point = (Point *) palloc(sizeof(Point));
	point->x = pq_getmsgfloat8(buf);
	point->y = pq_getmsgfloat8(buf);
	PG_RETURN_POINT_P(point);
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.