[Issue 323] New: Error: need opCmp for class Bar

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=323

           Summary: Error: need opCmp for class Bar
           Product: D
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: bugzilla at digitalmars.com
        ReportedBy: someanon at yahoo.com


I think this use to work; now on Linux dmd.166, it reports:

Error: need opCmp for class Bar

============================================
template Valuable(T) {
protected:
  float m_value = 0.0;

public:
  float value()  {return m_value;}
  void  value(float v)  {m_value=v;}
  int opCmp(T other) {
    int r;

    if      (value < other.value)  {r = -1;}
    else if (value > other.value)  {r =  1;}

    return r;
  }
}

class Foo {
}

class Bar : Foo {
  mixin  Valuable!(Bar);  // defined opCmp to compare Bar

public:
  this(float v) {
    m_value = v;
  }
}

int main(char[][] args) {
  Bar[3] bars;

  for (int i = 0; i < 3; i++) {
    bars[i] = new Bar(i);
  }
  bars.sort;

  return 0;
}

============================================


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