Csharp C++C#HostFXR通过std：：tuple传递参数

我玩了这个dotnet hosting example的代码，遇到了一些问题.

这就是我如何得到函数指针:

component_entry_point_fn function = nullptr;
    int rc = functionPointer(
      dllPath.c_str(),
      dotnetType.c_str(),
      methodName.c_str(),
      nullptr,
      nullptr,
      (void**)&function);

然后我给它打了电话:

struct test {
      const char* str = "from host!";
      int i = 1;
    } testArgs;

function(&testArgs, sizeof(testArgs));

而且它运行得很好.输出:

Hello, world! from Lib [count: 1]
-- message: from host!
-- number: 1
Hello again, world! from Lib [count: 2]
-- message: from host!
-- number: 1

但当我try 将参数作为元组传递时:

std::tuple<FunctionArgs...> argsTuple = std::make_tuple(args...);
function(&argsTuple, sizeof(argsTuple));

我知道了

Hello, world! from Lib [count: 1]
Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at System.SpanHelpers.IndexOfNullByte(Byte*)
   at System.Runtime.InteropServices.Marshal.PtrToStringUTF8(IntPtr)
   at Scripts.Lib.PrintLibArgs(LibArgs)
   at Scripts.Lib.HelloAgain(IntPtr, Int32)

C#端的代码与上面链接中的示例相同. Another important fact is that everything works without errors on Arm MacOS. The error appears on Linux x86_64. The compiler is the same everywhere: clang.

struct 和元组的sizeof是相同的—16字节. 已try 添加对齐方式:

alignas(16) std::tuple<FunctionArgs...>
      argsTuple = std::make_tuple(args...);