smart_library.get_mem_fn failed to call with 64bit dll

[c8jiang]

Environment: Windows 10 1903; MSVC 14.2; Boost 1.70
A member function in my class was successfully imported only in x86 and failed in x64.

auto f = sm.get_mem_fn<alias, void(Callback)>("set_callback"); give me an exception in x64.

My prject file: test_class.zip

My class like this:
#include <iostream>
#include <functional>
#include <boost/config.hpp>

struct CallbackInfo
{
void* p;
int a;
int b;
void* pContext;
};
//using Callback = std::function<void(CallbackInfo* pInfo)>;
typedef void(__stdcall* Callback)(CallbackInfo* pInfo);
class BOOST_SYMBOL_EXPORT test_a
{
int _a;
public:
test_a();
test_a(int a);
~test_a();
void print();
bool large_than(int a);
const char* number();
void set_callback(Callback callback);
static std::size_t size();
std::string name() const;
};