www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.learn - One case of GC-allocated closure

I don't know if this is a bug, an enhancement request, or just a 
mistake of mine. I don't understand why currently  nogc refuses 
this code:

import std.algorithm: filter;
struct Foo {
     bool bar(in int)  nogc {
         return true;
     auto spam()  nogc {
         immutable static data = [1, 2];
         //return data.filter!bar;         // Not allowed?
         return data.filter!(i => bar(i)); // Error
void main() {}

dmd 2.066alpha gives:

test.d(6,10): Error: function test1.Foo.spam  nogc function 
allocates a closure with the GC

Is this a bug/ER worth reporting?

May 26 2014