http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61006
--- Comment #2 from spamcop at tgos dot net --- Okay, but looking at the rest of the code, this seems to be the only enum/struct/union that is not correctly "typed" according to C rules. E.g. all the other variables of enum type have `enum` in the variable declaration and if I just fix this one line, the file compiles as standard C without any problem. So if nothing else than this line is a at least a serve break of style compared to the rest of the file and as far as I can tell the only reason why this file is not standard C and would need a C++ compiler.