CLion doesn't detect class usage with custom memory pool

Hi Tobo.

I can't reproduce the issue on the simple example:

#include <new>
struct S{};

int main() {
    void* p;
    S* s = new(p)S();
}

Please provide a full example so we could reproduce the issue on our side.

It appeared that problem is not in custom memory pool. I was able to repro the issue in a smaller sample:

Header file: testclass.h

#pragma once

class Base {
public:
    virtual const char* GetName() {
        return "Base";
    }
};

Base* CreateClass(const char* name);

Source file:

#include "testclass.h"

class MyClass : public Base {
    const char* Name;
public:
    MyClass(const char* name)
    : Name(name)
    {
    }

    const char* GetName() override {
        return Name;
    }
};

Base* CreateClass(const char* name) {
    return new MyClass(name);
}

"MyClass" is marked as unused, although it IS used in "CreateClass" function