c - 这些错误是什么？ (阿夫罗)

Question

What are these errors ?

/home/pi/try/client/c/libs/kaa/src/kaa/gen/kaa_logging_gen.c:93:9: error: too many arguments to function ‘avro_binary_encoding.read_char’
         avro_binary_encoding.read_char(reader, &record->NodeId);
         ^
/home/pi/try/client/c/libs/kaa/src/kaa/gen/kaa_logging_gen.c:95:2: error: too many arguments to function ‘avro_binary_encoding.read_char’
  avro_binary_encoding.read_char(reader, &record->OnlineStat);
  ^
/home/pi/try/client/c/libs/kaa/src/kaa/gen/kaa_logging_gen.c:99:2: error: too many arguments to function ‘avro_binary_encoding.read_char’
  avro_binary_encoding.read_char(reader, &record->FirmwareVER);

之前我收到错误，他们说 read_char 和 write_char 未声明为函数。但声明该函数后，我仍然遇到错误。但这个功能我们不知道怎么做。

我们对 write_char 和 read_char 所做的是:

static int read_char(avro_reader_t reader)
{
    /*
     * no-op
     */
    AVRO_UNUSED(reader);

    return 3;
}

static int write_char(avro_writer_t writer)
{
    /*
     * no-op
     */
    AVRO_UNUSED(writer);

    return 3;
}

以下是其他功能的其他示例:

static int read_string(avro_reader_t reader, char **s, int64_t *len)
{
    (void)len;
    int64_t  str_len = 0;
    int rval;
    check_prefix(rval, read_long(reader, &str_len),
             "Cannot read string length: ");
    *s = (char *) KAA_MALLOC(str_len + 1);
    if (!*s) {
        return ENOMEM;
    }
    (*s)[str_len] = '\0';
    AVRO_READ(reader, *s, str_len);
    return 0;
}

static int write_string(avro_writer_t writer, const char *s)
{
    int64_t len = strlen(s);
    return write_bytes(writer, s, len);
}

Answer 1

看起来您已经为使用一个参数定义的函数传递了两个参数

static int read_char(avro_reader_t reader)
static int write_char(avro_writer_t writer)

每个都有一个参数但你用

给他们打电话

avro_binary_encoding.read_char(reader, &record->NodeId);
avro_binary_encoding.read_char(reader, &record->OnlineStat);
avro_binary_encoding.read_char(reader, &record->FirmwareVER);

它传递了 2 个参数。