Hi All, are these results normal?

The results have nothing to do with extern(c). I just wanted to see the simplest results.

extern (C) void main()
{
  enum SAYI : char { bir = 49, iki }
  enum NUMS : SAYI {
        one = SAYI.bir,
        two = SAYI.iki
  }
  import core.stdc.stdio;

  printf("%c\n", SAYI.bir);     // okay, ASCII: 1
  printf("%c\n", NUMS.iki);     // okay, ASCII: 2

  printf("%c\n", NUMS.one.iki); // opps: ASCII: 2
  printf("%c\n", NUMS.two.iki); // opps: ASCII: 2

  // printf("%c\n", NUMS.three); // okay: ERROR

  printf("%c\n", NUMS.iki);     // opps: ASCII: 2
  printf("%c\n", NUMS.iki.iki); // opps: ASCII: 2

  enum Bar : SAYI { one }

  printf("[%c]\n", Bar.one);    // okay, ASCII: []
  assert(Bar.one == '\0');

  /* other error; Comparison between different enumeration types `Foo` and `SAYI`; If this behavior is intended consider using `std.conv.asOriginalType`
  enum Foo : SAYI { one, two }
  with (SAYI) enum Zoo : SAYI
  {
    one = bir, two
  }
  //*/
  with(SAYI)
  {
    enum Zoo : SAYI
    {
      one = bir,
      two = iki,
      three = cast(SAYI)'3'
    }
    printf("%c\n", Zoo.three); // okay, ASCII: 3
  }
}

v2.099.0 Specification on the subject:

enum C
{
   A = B,  // A = 4
   B = D,  // B = 4
   C = 3,  // C = 3
   D       // D = 4
}
enum E : C
{
   E1 = C.D,
   E2      // error, C.D is C.max
}

SDB@79