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#include <iostream>
using namespace std;
 
namespace noncopyable_  // protection from unintended ADL
{
 
    ////////////////////////////////////////////////////////////////////////////
    // class noncopyable
    ////////////////////////////////////////////////////////////////////////////
 
    class noncopyable
    {
    protected:
 
        ////////////////////////////////////////////////////////////////////////
        // Construction/Destruction
 
        noncopyable() {}
        ~noncopyable() {}
 
    private:  
 
        // The following members are private
 
        noncopyable(const noncopyable& that);
        const noncopyable& operator=(const noncopyable& that);
    };
 
} // namespace noncopyable_
 
typedef noncopyable_::noncopyable noncopyable;
 
class Test : private noncopyable
{
public:
    Test() : m_val() {}
    //Test(const Test& other) : m_val(other.m_val) {}
    ~Test() {}
 
private:
    int m_val;
};
 
int main()
{
	Test t1;
    Test t2(t1);
	// your code goes here
	return 0;
}

prog.cpp: In function 'int main()':
prog.cpp:47:15: error: use of deleted function 'Test::Test(const Test&)'
     Test t2(t1);
               ^
prog.cpp:33:7: note: 'Test::Test(const Test&)' is implicitly deleted because the default definition would be ill-formed:
 class Test : private noncopyable
       ^
prog.cpp:25:9: error: 'noncopyable_::noncopyable::noncopyable(const noncopyable_::noncopyable&)' is private
         noncopyable(const noncopyable& that);
         ^
prog.cpp:33:7: error: within this context
 class Test : private noncopyable
       ^

Standard output is empty