Use of mutex in destructors

[Rene Zwanenburg]

On Friday, 27 April 2012 at 13:13:20 UTC, Steven Schveighoffer 
wrote:
> Yes it's hard.  The GC has no access to compile-time type 
> information.  It relies on runtime information.  The GC is able 
> to call the dtor for classes because classes store a pointer to 
> their typeinfo in the class instance itself (needed for virtual 
> functions).
>
> But since structs do not have virtual functions, and many times 
> they are POD, this is not feasible.  The allocator could 
> technically store the type info in the memory block, but it 
> doesn't.  Strides recently have been made to make the GC more 
> precise, and in that effort, a path to solving this problem has 
> been opened up.
>
> I suspect with precise GC work, this problem will be solved as 
> a side-effect.  Maybe 6 months off, depending on how fervently 
> someone tries to add precise scanning ;)
>
> -Steve

I see, that makes sense. Thanks.

I'm storing pointers to heap allocated structs in an AA to work 
around issue 6178. I'll wrap them in a class instead, that should 
work.