c# - 在 C# 中调用 c++ dll 函数时发生访问冲突

Question

调用其中一个 C++ dll 函数时发生系统访问冲突错误。(请参阅下面的代码 - 在步骤中 int calresult =...即，)数组值都已适当给出。输入的哪一部分可能导致此错误？

谢谢!

C++ 代码-xyz.dll:

typedef struct model_parameters_t
{
    uint16_t *Input4;
    uint16_t *Input5;
} ;

typedef struct calibration_set_s
{
    uint16_t *input1;
    uint16_t *input2;
    uint16_t input3;
    model_parameters_t model;
} calibration_t;



extern "C"
{
    uint16_t compute(calibration_t);
}

C#代码:

public struct model_parameters_t
{
    uint16_t [] Input4;
    uint16_t [] Input5;
} ;

public struct calibration_set_s
{
    uint16_t []input1;
    uint16_t []input2;
    uint16_t input3;
    model_parameters_t model;
} calibration_t;


[DllImport(@"xyz.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
public static extern int compute(calibration_set_s calibration_set_t);



public class trycompute
{
    calibration_set_s calibration_set_Cal_input = new calibration_set_s();
    calibration_set_Cal_input.input1= array;
    calibration_set_Cal_input.input2= array;
    calibration_set_Cal_input.input3= 12;
    calibration_set_Cal_input.model.input4 = array;
    calibration_set_Cal_input.model.input5 = array;

    int CalResult = computeHybridCalCoeffs(calibration_set_Cal_input);
}

Answer 1

在 C# 中的结构中使用实际指针而不是数组，声明类不安全。

C# 无法知道如何在 struct 中编码数组，例如，数组的大小是未定义的。