On 23.11.2015 19:43, Yann Ylavic wrote: > No measured difference in my tests, I guess it depends on likelyhood to > fail/succeed early in the string or not. ? I don't see, where it wins anything -- but I do see, where it loses a little... > That's expected (or at least no cared about in this test case). We > simply want res to not be optimized out, so print it before leaving, > without any particular relevance for its value (string.h and optimized > versions should return the same res with the same args, ascii strings > only, though). Yes, we do want the value printed -- such as to catch the kind of errors I reported earlier. But my question was, why does the value change depending on the number of iterations?
-mi