Invalid memory operation during allocation with `new`

[Adam D. Ruppe]

On Sunday, 12 January 2020 at 15:21:05 UTC, Per Nordlöw wrote:
> - in the short run,
>   Qualifying all user-defined class destructors with `@nogc`?
>
> - in the long run,
>   Making DMD forbid GC-allocations transitively inside class 
> destructors?

The class doesn't necessarily know what its destructor is going 
to be used for, nor does as struct. So such static checks would 
end problematic; limiting to some legit cases and not catching 
some problem cases (because destructors are called with child 
classes to).

The most recent release added a runtime function you can test 
though:

https://dlang.org/phobos/core_memory.html#.GC.inFinalizer

so if that is true, avoid doing the call.

Of course that doesn't help the case when you don't know the rule 
and don't even think to call it.......