Attempt to read write-protected memory

Question

I have a C ++ DLL that exports a method like this:

extern "C" __declspec (dllexport) void ConvE(int type, const char* path, int b1, int b2, int b3, int b4, int b5)
{
    FFileList file_list;

    char temp_path[1024];

    if(type == 1) 
    {
        sprintf(temp_path,"%s*",path);
        GetFindFileListWin(temp_path,".mrs",file_list);
        file_list.RecoveryZipE(b1, b2, b3, b4, b5);
        file_list.ConvertNameMRes2Zip();
    }
    else if(type == 2) 
    {
        sprintf(temp_path,"%s*",path);
        GetFindFileListWin(temp_path,".zip",file_list);
        file_list.ConvertZipE(b5, b4, b3, b2, b1);
        file_list.ConvertNameZip2MRes();
    }
}

And I call it in my C # application as follows:

[DllImport("Mrs.dll", CharSet = CharSet.Ansi, CallingConvention = CallingConvention.Cdecl)]
public static extern void ConvE(int type, string path, int b1, int b2, int b3, int b4, int b5);

But every time I run it, it gives me the error "Attempted to read or write protected memory. This often indicates that another memory is damaged"

As far as I read, something is wrong with the way I import the function in C #, but I really don't know how to solve it.

: Conv(), ConvE, 5 , . ConvE file_list.RecoveryZipE(), , RecvoeryCharE ( , ), , RecoveryChar(), Conv().

RecoveryChar:

void RecoveryChar(char* pData,int _size)
{
    if(!pData) return;
    BYTE b,bh,d;

    for(int i=0;i<_size;i++) {
        b = *pData;
        bh = b&0x07;
        d = (bh<<5)|(b>>3);
        *pData = d ^ 0xff;
        pData++;
    }
} 

RecvoeryCharE:

void RecoveryCharE(char* pData, int _size, int b1, int b2, int b3, int b4, int b5)
{
    if(!pData) return;

    BYTE b;

    for(int i=0;i<_size;i++) {
        b = *pData;
        b = (((((b >> b1) | (b << 5)) ^ b2) + b3) ^ b4) - b5;
        *pData = b;
        pData++;
    }
} 

, #:

: ,

RecoveryCharE( _fileheaderReader , _fileheaderReaderSize, b1, b2, b3, b4, b5 );

- b1 0. , .

, , , restoreChar() convertChar(), .

Answer 1

:

• ++ #? 32-? 64-? , , . , , , "int32_t" "int"

• marshaller ++ 'char *' # 'string', , , "MarshalAs (UnmanagedType.LPStr)] string path",

• , ++ ", printf", ( ) . , , printf, .

++:

inline void log_(const char *format, ...)
{
  va_list args;
  va_start(args, format);

  char buffer[1000];
  vsprintf(buffer, format, args);
  OutputDebugStringA(buffer);
}