c++ 函数体中声明结构体 按字节对齐

直接上代码了

#pragma pack(1)
struct _st_v2x_testingdata
{
    int len;
    uint8_t cmd;
    uint8_t data_type;
    char ID[8];
    uint64_t sign_verify_time;
    uint8_t sign_verify_result;
    uint64_t send_receive_time;
    int32_t AID;
    int32_t CBR;
    int32_t msgCnt;
    uint64_t secMark;
    uint32_t speed;
    uint32_t longitude;
    uint32_t latitude;
    int32_t heading;
    char dsmp_payload[0];
};
#pragma pack()

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