module foo;

import std.stdio;

class Foo
{
    private this ()
    {
        writeln("ads");
    }
}

module test;

import std.stdio;
import foo;

version (LDC)
    extern (C) Object _d_allocclass(ClassInfo);

else
    extern (C) Object _d_newclass(ClassInfo);
        
Object newInstance (ClassInfo classInfo)
{
    version (LDC)
    {        
        Object object = _d_allocclass(classInfo);
        (cast(byte*) object)[0 .. classInfo.init.length] = classInfo.init[];
        
        return object;
    }

    else
        return _d_newclass(classInfo);
}

void main()
{
    auto f = cast(Foo) newInstance(Foo.classinfo);
    auto a = &f.__ctor;
    a();
}