[Issue 4103] opAssign signature rules not enforced on templated opAssign

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=4103

Kenji Hara <k.hara.pg at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |spec
             Status|NEW                         |RESOLVED
            Version|unspecified                 |D2
         Resolution|---                         |FIXED

--- Comment #2 from Kenji Hara <k.hara.pg at gmail.com> ---
D2 spec is updated for struct.

http://dlang.org/operatoroverloading#assignment

> For struct types, operator overloading for the identity assignment is allowed.
...
> However for class types, identity assignment is not allowed. 

And for class types, identity opAssign definition is properly checked, even if
it's template.

class C
{
    C opAssign(T)(T t)    // line 3
    {
        writeln(T.stringof);
        return this;
    }
}

void main() {}

Output:

test.d(3): Error: class test.C identity assignment operator overload is illegal

--