MONGO_EXPORT int bson_iterator_int( const bson_iterator *i ) {
    switch ( bson_iterator_type( i ) ) {
    case BSON_INT:
        return bson_iterator_int_raw( i );
    case BSON_LONG:
        return bson_iterator_long_raw( i );
    case BSON_DOUBLE:
        return bson_iterator_double_raw( i );
    default:
        return 0;
    }
}
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.