Re: push_back causes crash at the limits of memory

From:
"Doug Harrison [MVP]" <dsh@mvps.org>
Newsgroups:
microsoft.public.vc.stl
Date:
Tue, 01 Apr 2008 23:32:52 -0500
Message-ID:
<1236v35qvj7udiobk1f8bvl7u9pterctkd@4ax.com>
On Tue, 1 Apr 2008 21:09:01 -0700, kevin <kevin@discussions.microsoft.com>
wrote:

My program crashes on executing a push_back, triggering the message:

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.

I am running the program on a 32bit Windows XP Pro machine. At the time I
start my loop with the push_back, the program has already used up 1.5GB of
memory. Somewhere in the middle of my loop, the push_back crashes the
program with the above message. In this case, the user has data which
exceeds the addressable memory, but the push_back does not die gracefully.
Is there some way to stop it from crashing when it can not allocate memory on
a push_back?

For example, this program dies in a similar manner:

#include<iostream>
#include<vector>

using namespace std;

int main()
{
 vector<long long> thevector;
 longlong theint;

 for(theint=0; theint < 20000000000; theint++)
 {
   thevector.push_back(theint);
 }

 return 0;
}


Try catching the exception that push_back throws.

--
Doug Harrison
Visual C++ MVP

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