Question

When I try to resize the list the program crashes… Look at that code, try to enter 1,000,000,000 (10^9)… On my windows 7 x64 doesnt work.

#include <cstdlib>
#include <iostream>
#include <list>

using namespace std;

int main(int argc, char *argv[])
{
    list<long long> l;

    long long n;
    cin>>n;

    cout<<l.max_size()<<endl;

    //uncomment 1 or 2

    //l.resize(n,l.size()+1); //1st try

    /*for (long long i=0; i<n; i++) //2nd try
        l.push_back(n);*/


    //system("PAUSE"); // uncomment if needed
    return 0;
}

The max size is over 4*10^9, but still doesnt work… Im using the newest MinGW (G++)

Answer 1

Since “available memory” is a slightly fickle concept, l.max_size() returns a hard maximum. Your “crash” is very likely an uncaught std::bad_alloc, which you’d expect when running out of memory.