http://d.puremagic.com/issues/show_bug.cgi?id=4312



--- Comment #6 from kenn...@gmail.com 2011-05-27 07:16:28 PDT ---
(In reply to comment #5)
> I'm not defining a closure. I'm defining a nested function literal. And given
> that the following compiles:
> 
> void main()
> {
>     int b;
>     int funcliteral(int a){return a+b;}
>     writeln(  (ReturnType!funcliteral).stringof );
> }
> 

That's because the '&' of that 'funcliteral' is a delegate. Try it:
---------------------------------
void main() {
    void f() {};
    static void g() {};
    pragma(msg, typeof(&f));   // void delegate()
    pragma(msg, typeof(&g));   // void function()
}
---------------------------------

And the following also does not compile:
---------------------------------
void main() {
    int b;
    static int func(int a) { return a+b; }
}
---------------------------------
x.d(6): Error: function x.main.func cannot access frame of function D main
---------------------------------

See http://d-programming-language.org/expression.html#FunctionLiteral.

> I would also expect 
> 
> void main(string[] args) {
>     int b;
>     writeln(  (ReturnType!( function(int a){return a+b;} )).stringof );
> }
> 
> to work. But, as you pointed out, this isn't a problem with ReturnType 
> anymore.

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