https://issues.dlang.org/show_bug.cgi?id=19119

--- Comment #10 from Manu <turkeyman@gmail.com> ---
Right, and that goes back to my original point; the GC doesn't know the memory is a C++ class, and doesn't know how to destruct.

So either, use the GC under the assumption the destructor will never be called... or maybe there's some opportunity to make gcnew wrap C++ class allocations in a thin D class that forwards the destructor?

--

https://issues.dlang.org/show_bug.cgi?id=19119

--- Comment #11 from kinke@gmx.net ---
(In reply to Manu from comment #10)
> or maybe there's some opportunity to make gcnew wrap C++ class allocations in a thin D class that forwards the destructor?

I guess something like having specially-marked GC blocks for C++ objects and gcnew prepending the C++ dtor (or D ClassInfo) address right before the actual class instance would work => 1 pointer overhead per GC-allocated C++ object to make it destructible during garbage collection.

--

https://issues.dlang.org/show_bug.cgi?id=19119

--- Comment #12 from kinke@gmx.net ---
Something very similar is apparently already done for GC-allocated structs - if they have a destructor, the TypeInfo pointer is stored right after the actual instance, and a specially marked GC block is requested; see rt.lifetime._d_newitemU().

--

https://issues.dlang.org/show_bug.cgi?id=19119

--- Comment #13 from Manu <turkeyman@gmail.com> ---
(In reply to kinke from comment #12)
> Something very similar is apparently already done for GC-allocated structs - if they have a destructor, the TypeInfo pointer is stored right after the actual instance, and a specially marked GC block is requested; see rt.lifetime._d_newitemU().

Right. I think gcnew should implement a trick like that for C++ objects.

I don't have time to look at it now though.
Super-busy, which is why I was rushing to get all my C++ stuff in a month back.

--

https://issues.dlang.org/show_bug.cgi?id=19119

Iain Buclaw <ibuclaw@gdcproject.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P1                          |P3

--

https://issues.dlang.org/show_bug.cgi?id=19119

--- Comment #14 from dlangBugzillaToGithub <robert.schadek@posteo.de> ---
THIS ISSUE HAS BEEN MOVED TO GITHUB

https://github.com/dlang/dmd/issues/19468

DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB

--