How to turn an inout(Object) into a string

[Meta via Digitalmars-d-learn]

On Sunday, 26 April 2015 at 03:48:00 UTC, tcak wrote:
> On Sunday, 26 April 2015 at 03:09:17 UTC, Meta wrote:
>> The following code spits out pages of error messages, and it's 
>> driving me insane. I know that Object.toString only has a 
>> mutable variant, so how am I supposed to use writeln, 
>> toString, etc. with an inout, const, or immutable object?
>>
>> void main(inout string[] args)
>> {
>> 	import std.stdio;
>> 	
>> 	immutable(Object) o = new immutable Object();
>>        //Compile error: template instance
>>        //std.format.formatGeneric!(
>>        //        LockingTextWriter, immutable(Object),
>>        //        char)
>>        //error instantiating
>> 	writeln(o);
>> }
>
> writeln( cast(Object)o );
>
> Tada!!

Also undefined behaviour, AFAIK.