Comment by dhosek

I don’t have gcc available so I can’t test it, but I wonder what it does with

     int a = 5;
     int b = a++;

if it gives b==5 in this circumstance (which I would say is the correct value), then it seems that giving 13 for a++ + ++a is a bug in the compiler. I kind of feel like giving 6 as an answer would also be a bug in the compiler since postfix-++ should return the old value and then increment.