Re: new returning 0

From:
red floyd <no.spam@here.dude>
Newsgroups:
comp.lang.c++
Date:
Wed, 30 May 2007 16:10:19 GMT
Message-ID:
<Llh7i.23523$YL5.11863@newssvr29.news.prodigy.net>
Noah Roberts wrote:

It is my understanding that this behavior has long been deprecated and
is not standard. That is the creation of an array of objects using new
returning 0 instead of throwing an exception. I'm not the one dealing
with the code but I told that person he might expect an exception and
thus sent him on a wild goose chase. Where did I go wrong?

As far as I know there's no override of operator new. There's no
(std::nothrow). Compiler is msvc++ 8.


std::nothrow is defined in <new>

#include <new>
#include <stdexcept>
#include <iostream>
#include <ostream>

int main()
{
     int *pint = 0;
     try
     {
         pint = new int[10];
     }
     catch (std::bad_alloc& e)
     {
         std::cout << "new failed: "
                   << e.what()
                   << std::endl;
     }

     delete[] pint;

     pint = new(std::nothrow) int[10];
     if (!pint)
     {
        std::cout << "new(std::nothrow) failed" << std::endl;
     }
     delete[] pint;

    return 0;
}

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