[Issue 21693] extern(C++) class instance dtors are never called, breaking RAII

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21693

kinke <kinke at gmx.net> changed:

           What    |Removed                     |Added
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                 CC|                            |kinke at gmx.net

--- Comment #3 from kinke <kinke at gmx.net> ---
The GC could presumably handle C++ classes like structs, where the
TypeInfo_Struct pointer is stored after the struct instance IIRC. For C++
classes, it could store the D TypeInfo_Class pointer after the class instance
(but note that class instances have no tail padding, so some padding might be
needed for an aligned TypeInfo pointer).

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