I was just wondering if a language could support something like a Retry/Fix block?

The answer to this question is probably the reason it's a bad idea or equivalent to something else, but the idea keeps popping into my head.

void F()
{
  try
  {
    G();
  }
  fix(WrongNumber wn, out int x)
  { 
    x = 1;
  }
}

void G()
{
  int x = 0;
  retry<int>
  {
    if(x != 1) throw new WrongNumber(x);
  }
}

After the fix block ran, the retry block would run again...