Re: x.RC.__postblit () is not callable using argument types () const

[Ali Çehreli]

On 02/04/2013 05:15 PM, Dan wrote:
I've seen these type of errors often and usually the cause kind of jumps
out. In this case I'm totally confused. Just trying to move from 2.06 to
2.061.
The code is: http://dpaste.dzfl.pl/f40e4d6f
and fails with the error in subject line. Observations:

- If "static if(1)" is changed to "static if(0)" it compiles
- If either _valuationHistory or goo member of BSItem is commented out
it compiles.

I know the code is somewhat cryptic, but I've been using binary
reduction comment in/out to try to narrow down this issue. I can not
understand why an introduction of opEquals on a struct History with no
relationship to RC causes an error to show for RC.

Thanks
Dan

Further reduced:

struct History(V) {

  bool opEquals(const typeof(this) other) const {
    return true;
  }
}

struct RC {
  this(this) { _impl = _impl.dup; }
  string[] _impl;
}

struct BSItem {
  ValuationHistory _valuationHistory;
  RC[int] goo;
}

struct ValuationHistory {
  History!double _history;
}

void main() {
}

The problem is related to History.opEquals being 'const'. Remove that 
'const' and the code compiles. This must be a (lack of) 
const-correctness issue.

Ali