An array iterator in C

wow.c

#include <stddef.h>
#include <stdio.h>


#define ARR_SIZE(...) (sizeof(__VA_ARGS__) / sizeof((__VA_ARGS__)[0]))

#define FOREACH_ARR(Type, IName, ...)                         \
  for (struct                                                \
       {                                                     \
         size_t i;                                           \
         Type v;                                             \
         Type *arr;                                          \
       } IName =                                             \
       {                                                     \
         0,                                                  \
         (Type[])__VA_ARGS__[0],                             \
         (Type[])__VA_ARGS__                                 \
       };                                                    \
       IName.i < ARR_SIZE((Type[])__VA_ARGS__);              \
       ++IName.i, (IName.i >= ARR_SIZE((Type[])__VA_ARGS__)) \
                   || (IName.v = IName.arr[IName.i]))


int main(void)
{
  FOREACH_ARR(int, iter, {1, 2})
    printf("%d\n", iter.v);
}

One may want to add a static assert to avoid "iterating" over a pointer