Re: private constructor and new operator overloading.

From:
siddhu <siddharth.sng@gmail.com>
Newsgroups:
comp.lang.c++
Date:
11 May 2007 08:45:05 -0700
Message-ID:
<1178898305.430200.284730@h2g2000hsg.googlegroups.com>
On May 11, 11:27 am, siddhu <siddharth....@gmail.com> wrote:
A correction in the code snippet..

Dear Experts,

I want to make a class whose objects can be created only on heap.
I used the following approach.

class ss
{
        ss(){}
        public:
        void* operator new(size_t sz)
                {
                        cout<<"in new"<<endl;
                        return malloc(sz); //return new char[sz];

                                                      //sorry..... my
mistake

                }
             void operator delete(void* m)
                {
                        free(m);
                }

};

int main()
{

  ss* s = new ss;
return 0;

}

But when I do
ss* s = new ss;
compiler complains that constructor ss::ss() is private.
As operator new function is member of class so compiler should not
complain because operator new function can call the default
constructor even if it is private.
I am surprised and confused.
Suggestions would be of great help.

Regards,
Siddharth

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