Compiling with /Zc:forScope causes warnings when including <QtGui/QtGui>

Compiling with the qdebug.h include before the qbitarray.h include seems to turn off the /Zc:forScope in VS and outputs the warning:
1>.\main.cpp(13) : warning C4288: nonstandard extension used : 'i' : loop control variable declared in the for-loop is used outside the for-loop scope; it conflicts with the declaration in the outer scope
1> .\main.cpp(12) : definition of 'i' used
1> .\main.cpp(7) : definition of 'i' ignored

Swithcing the order of the includes will make the warning go away.

#include "qdebug.h"
#include "qbitarray.h"

int main(int argc, char **argv)
{
    for (int i = 0; i < 5; i++)
    {
    }

    char arr[2];
    int i = 0;
    arr[i] = 'a';
}

Seen on VS2005.