This is my first question, sorry if it will be a bad formulated or bad one in general.
I have the following code:

volatile bool is_ordered = false;
    while (!is_ordered)
    {
        is_ordered = true;
        for (FieldOp& op : ordered_operator)
        {
            while (!op.left_chain.empty() && op.left_chain.back() > 0)
            {
                is_ordered = false;
                op.CommuteRight(ordered_operator);
            }
            if (!is_ordered)
            {
                break;
            }
        }
    }

ordered_operator variable is a vector, CommuteRight() method can change it by pushing back some element. As well as I know it can cause deallocation and copying of all elements to a new bigger block of memory. Because I have a break statement to start over with a new vector.

However, somehow I am getting segmentation fault error at while-loop condition. I also have is_ordered is being equal to be false and &op not pointing anywhere, so this is where segfault comes from I guess. I don`t understand how is it possible reach here and not hit break after the while loop.

I make is_ordered false volatile and then turned off all of my optimizations and it didn’t help.