Emulating GCC's __builtin_unreachable?

Question

I get a whole lot of warnings about switches that only partially covers the range of an enumeration switched over. Therefor, I would like to have a \"default\" for

Answer 1

Hmm, something like (since __builtin_unreachable() appeared in 4.5):

#define GCC_VERSION (__GNUC__ * 10000 \
                               + __GNUC_MINOR__ * 100 \
                               + __GNUC_PATCHLEVEL__)
#if GCC_VERSION >= 40500
#define my_unreachable()  __builtin_unreachable()
#else
#define my_unreachable() do { printf("Oh noes!!!111\n"); abort(); } while(0)
#endif