<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_0avad8bpdulbjaongkeeevhsv1, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
<br />
<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
!7

p {
  check(0, "abc", "ABC");
  check(0, "abc", "ABC");
  check(1, "abd", "ABC");
  check(-1, "abb", "ABC");
  print("OK");
}

svoid check(int x, S a, S b) {
  if (compareIgnoreCase_lower(a, b) != x)
    fail(a + " / " + b);
  if (compareIgnoreCase_lower(b, a) != -x)
    fail(b + " / " + a);
}