Can't I allocate at descontructor?

[Jack]

On Friday, 5 March 2021 at 21:24:08 UTC, tsbockman wrote:
> On Friday, 5 March 2021 at 21:17:24 UTC, tsbockman wrote:
>> On Friday, 5 March 2021 at 21:02:08 UTC, H. S. Teoh wrote:
>>> 	class C {...}
>>>
>>> 	import core.memory : GC;
>>> 	C c = cast(C) GC.malloc(C.sizeof);
>>>      ...
>>     ...
>>     import core.memory : GC;
>>     C c = cast(C) GC.malloc(C.sizeof);
>>     ...
>
> Also, that's not the correct way to manually allocate a class 
> on the heap. C.sizeof is the size of a reference to C, not an 
> instance of C, and we need to blit and construct the instance 
> before it is safe to use:
>
>     import core.memory : GC;
>     C c = cast(C) GC.malloc(__traits(classInstanceSize, C));
>     import core.lifetime : emplace;
>     emplace(c, anyConstructorArgsGoHere);
>     ...

good catch, thanks