FIX: Inaccurate value is assigned to a variable by an assignment statement in a Visual C++ application that is compiled with the "/O2" optimization option in Visual Studio 2010

#include <stdio.h>
#include <tchar.h>
#include <memory.h>
#include <malloc.h>
 
typedef struct Run 
{
            int value;
} 
Run;
 
int _tmain(int argc, _TCHAR* argv[])
{
            TCHAR* szCount = _T("4");
            int count = _ttoi(szCount);
            size_t size = count * sizeof(Run);
 
            Run* pRun = (Run*) malloc(size);
            memset(pRun, 0, size);
 
            size = count * sizeof(unsigned char);
            unsigned char* pLevels = (unsigned char*) malloc( size);
            memset(pLevels, 0, size);
 
            for(int i = 0; i < count; ++i)
            {
                        pRun[i].value = 1 + i;
            
            }
 
            int symbol = 0;
            int i;
            for(i=0; i<count; ++i) 
            {
                        symbol=pRun[i].value+=symbol;
                       //Work around method
                       //pRun[i].value += symbol;                     
                       //symbol = pRun[i].value;
}
 
            for(int i = 0; i < count; ++i)
            {
                        printf("%d ", pRun[i].value);
            }
 
            printf("\r\n");
            free(pRun);
            
            return 0;
}