With gcc you can use this to get the elements of an array. // will barf if fed a pointer #define sizeof_array(arr) \ (sizeof(arr) / sizeof((arr)[0

With gcc you can use this to get the elements of an array. // will barf if fed a pointer #define sizeof_array(arr) \ (sizeof(arr) / sizeof((arr)[0]) \ + sizeof(typeof(int[1 - 2 * \ !!__builtin_types_compatible_p(typeof(arr), \ typeof(&arr[0]))])) * 0)