Both of these defects are for the second parameter of the `constellation` class' `map_to_points` function that accepts a pointer to an array of `gr_complex` values. In both of these defects, a class is calling this function and passing the address of a single `gr_complex` value in place of an array pointer. The only reason this isn't exploding with SEGFAULTs is because both of these functions happen to use the default constructor of `constellation`, which sets the loop limit in `map_to_points` to `1`. It's generally a dangerous design, but changing the function prototype seems heavy heanded, and adding additional conditionals will end up affecting the fast-path. For now, I am just documenting this oddity in the code.