#define GCC_VERSION (__GNUC__ * 10000 + \
                     __GNUC_MINOR__ * 100 + \
                     __GNUC_PATCHLEVEL__)


#if GCC_VERSION < 40900

  #error Your GCC version is too old, please switch to >= 4.9

#endif


// Generic wrapper macro for the various dict_write_* functions
// Can be used with gcc >= 4.9 and --std=c11 flag
#define dict_write_value(iter, key, value, ...) _Generic((value), \
    uint8_t: dict_write_uint8, \
    uint16_t: dict_write_uint16, \
    uint32_t: dict_write_uint32, \
    unsigned: dict_write_uint32, \
    int8_t: dict_write_int8, \
    int16_t: dict_write_int16, \
    int32_t: dict_write_int32, \
    int: dict_write_int32, \
    char*: dict_write_cstring, \
    uint8_t*: dict_write_data \
  )(iter, key, value, ## __VA_ARGS__)