GC.BlkAttr.FINALIZE

[Steven Schveighoffer]

On Mon, 03 Mar 2014 12:03:12 -0500, Namespace <rswhite4 at googlemail.com>  
wrote:

> On Monday, 3 March 2014 at 02:44:09 UTC, Namespace wrote:
>> It's working now, I get all my debug infos I need.
>> But: I have absolutly no idea how to get the correct TypeInfo in  
>> rt_finalize2. The ClassInfo is identified by casting the void* pointer  
>> to a void** and then cast this void** to ClassInfo*. But for other  
>> TypeInfos this weird trick doesn't work. How can I extract the correct  
>> TypeInfo from this void**? :P
>
> I get the real TypeInfo (not sure if this was intended this way) and in  
> my test base it works! But in druntime I get the weird error:
> src\rt\lifetime.d(1256): Error: variable a1 used before set
>
> ----
>      if (gc_getAttr(p) & BlkAttr.APPENDABLE)
>      {
>          void[] a1 = *cast(void[]*) ppv;
>          //printf("len = %d\n", a1.length);
>
>          void* p_a1 = &a1;
>          void* tp = p_a1 + 12;
>
>          TypeInfo* ti = cast(TypeInfo*) tp;
>
>          import std.string : toStringz;
>          string s = ti.toString(); // line 1256
>          printf("Type = %s\n", toStringz(s));
>
>          return;
>      }
> ----
>
> Any call to ti will invoke the error. Any idea why?

Not really any clue.

But if this is in druntime, it should not be importing anything from std.

-Steve