On 31 October 2013 17:48, Jędrzej Dudkiewicz wrote: > On Thu, Oct 31, 2013 at 6:38 PM, Jonathan Wakely <jwakely.gcc@xxxxxxxxx> wrote: >> On 31 October 2013 17:19, Jędrzej Dudkiewicz wrote: >>> >>> Even as a infix/suffix? I thought that double underscore is reserved >>> only if it is used as a prefix? >> >> No, a double underscore anywhere makes it a reserved name. >> >> — Each name that contains a double underscore _ _ or begins with an >> underscore followed by an uppercase letter (2.12) is reserved to the >> implementation for any use. > > Thanks. Is it from c++11 or c++98? I'm pretty certain that when I read > it last time it read only "begins with". But it seems that my memory > ain't that good after all, eh? C++98. IIRC double underscore are not reserved in C except at the beginning of a name, so maybe that's what you're thinking of.