std.variant holding bigger structs and std.concurrency message limitation

[David Eagen]

On Saturday, 27 April 2013 at 17:42:54 UTC, Idan Arye wrote:
> The way it works now, is that if the size is too big they use a 
> reference instead: 
> https://github.com/D-Programming-Language/phobos/blob/master/std/variant.d#L544#L555

So is the bug in std.concurrency and they way it uses Variant or 
is the bug in Variant?