Access std::variant inside lambda

问题

I have the following code:

std::variant<std::uint32_t, std::uint16_t, float> my_variant;

template <typename T>
void my_sub_func(T& value)
{
  // do stuff
};

void my_func(my_variant& value)
{
  [&]()
  {
    my_sub_func(std::get<std::uint32_t>(value));
  };
};

int main()
{
  my_variant t;
  my_func(t);
}

I always get an Unexpected index exception at runtime, why is that and how can I avoid it?

来源：https://stackoverflow.com/questions/61930744/access-stdvariant-inside-lambda