[Issue 11570] AssertError with opDispatch

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=11570

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from Kenji Hara <k.hara.pg at gmail.com> ---
(In reply to stevencoenen from comment #0)
> Following code generates an AssertError when executed.
> 
> class forward(T)
> {
>   void opDispatch(string s, T2)(T2 i)
>   {
>     import std.stdio;
>     writeln(s);
>   }
> }
> 
> void main()
> {
>   forward!(string) a;
>   a.foo(1);
> }

forward!(string) is a class type, so the variable 'a' in main is initialized to
null by default. Then the class member function 'foo' is invoked on null class
reference.

You have to initialize the variable 'a' by using allocated class object.

void main()
{
    forward!(string) a = new forward!(string)();
    a.foo(1);   // works
}

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