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Description
I'm using the latest version 5f83e41
and VS2022.
to reproduce this issue,please add a file ISampleDLL.h in SampleDLL dir:
#pragma once
class ISampleDLL
{
public:
virtual ~ISampleDLL() = default;
virtual int addNumbers(int a,int b) = 0;
};
and replace SampleDLL.h
#include "ISampleDLL.h"
class SampleDLL: public ISampleDLL
{
public:
static SampleDLL& Instance();
virtual int addNumbers(int a,int b) override;
private:
SampleDLL();
~SampleDLL();
SampleDLL(const SampleDLL&) = delete;
SampleDLL& operator=(const SampleDLL&) = delete;
};
SampleDLL.cpp
#include "SampleDLL.h"
SampleDLL::SampleDLL()
{}
SampleDLL::~SampleDLL()
{}
SampleDLL& SampleDLL::Instance()
{
static SampleDLL instance;
return instance;
}
int SampleDLL::addNumbers(int a,int b)
{
return a + b;
}
extern "C" __declspec(dllexport) ISampleDLL* CreateSampleDLL()
{
return &SampleDLL::Instance();
}
edit DllLoader.cpp
...
#include "../SampleDLL/ISampleDLL.h"
...
void LoadFromMemory(void)
{
...
using GetSampleDLL=ISampleDLL* (*)();
//addNumber = (addNumberProc)MemoryGetProcAddress(handle, "addNumbers");
GetSampleDLL getSampleDLL = (GetSampleDLL)MemoryGetProcAddress(handle,"CreateSampleDLL");
ISampleDLL* sampleDLL = getSampleDLL();
_tprintf(_T("From memory: %d\n"), sampleDLL->addNumbers(1, 2));
...
}
then variable getSampleDLL and sampleDLL have not null address,but the vftable of sampleDLL got adress 0x0.
ps. I have read issue#31 but it didn't solve my problem
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