http://d.puremagic.com/issues/show_bug.cgi?id=6246

           Summary: Struct instance parameterized with an Integral fails
                    as argument to functions/methods
           Product: D
           Version: D2
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: DMD
        AssignedTo: nob...@puremagic.com
        ReportedBy: pun...@coverify.org


--- Comment #0 from Puneet Goel <pun...@coverify.org> 2011-07-03 22:30:15 PDT 
---
struct Foo (size_t N) {
  void opAssign (size_t NN)(Foo!(NN) f) {/*do nothing*/}
}
struct Bar (string S) {
  void opAssign (string SS)(Bar!(SS) f) {/*do nothing*/}
}
void main() {
  Bar!"BAR1" bar1;
  Bar!"BAR2" bar2;
  bar2 = bar1;            // this compiles fine
  Foo!4 foo1;
  Foo!4 foo2;
  foo2 = foo1;            // compilation error
}


Gives an error saying:
Error: cannot implicitly convert expression (foo1) of type Foo!(4) to Foo!(NN)

Structs with string parameters work just fine.

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