Hi! cpp.texi description of __STDC_VERSION__ macro suggests that this macro must be defined unless -traditional, but this is not true with current cpplib. cccp used to define it always to 199409 unless -traditional was given. Is it correct not to define __STDC_VERSION__ for C89 (and thus shall we change cpp.texi) or should cpplib define it to 199409L as fallback? Jakub