https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71974
--- Comment #3 from Rafael Guglielmetti <register at rgug dot ch> --- (In reply to Eric Gallager from comment #2) > (In reply to Rafael Guglielmetti from comment #1) > > With gcc 6.1.1, the above code gives rise to the error: > > error: condition expression refers to iteration variable āiā > > > > So I suppose my syntax was incorrect. It is annoying tough. > > Do you have a version of your code that avoids that error? I get it, too, > and so I can't reproduce the warning with that error there... WAITING on a > valid testcase. I think I did something else but I don't remember how I avoid this problem, sorry.