const struct not accepted as initializer by dmd 2.002

[Stewart Gordon]

"Regan Heath" <regan at netmail.co.nz> wrote in message 
news:f77ov6$1hem$1 at digitalmars.com...
> torhu wrote:
>> Reposting from D.learn, since there were no answers there.
>>
>> ---
>> struct Inner
>> {
>>     int value;
>> }
>>
>> struct Outer {
>>     //const(Inner) i;  // this fixes it, but is not valid in D 1.0
>>     Inner i;
>> }
>>
>> const Inner ic = { 5 };  // const or invariant here makes no difference
>>
>> Outer outer = {
>>     i: ic      // line 14
>>     //i: { 5 }  // this is allowed
>> };
>> ---
>> c:\prog\test\D>dmd -c test
>> test.d(14): Error: non-constant expression cast(Inner)ic
>> ---
>>
>> Since the value of ic is fixed at compile time, shouldn't it be 
>> equivalent to a literal?
>>
>> I'm trying to make this code work in D version 1 too, and since it's for 
>> an example, I'm trying to avoid any string mixins or other ugly 
>> workarounds.
>
> I can't think of anything.
>
> Is there a pre-defined version specifier for D1.0 and D2.0 you could use 
> to conditionally select code which works for each?

There's D_Version2.

But there's still a problem - code that is CC'd out still has to be 
syntactically valid.  You'd have to put the code that relies on 2.0 syntax 
in a separate, conditionally imported module.

Stewart.