Re: c++11 enum syntax ok in DMD headers ?

[S.G via D.gnu]

On Friday, 22 November 2019 at 08:29:07 UTC, Iain Buclaw wrote:
-------- Original Message --------
On Nov 22, 2019, 8:55 AM, S.G via D.gnu < d.gnu@puremagic.com> 
wrote:
Hello, I've seen that many D enum are still typed as int because
of the c++ headers but c++11 allow things like
enum Stuff: unsigned char { ... }
Is is ok to use this in the headers ?
The baseline bootstrapping compiler is C++98.

You don't have to type D enums as int, but the base type must 
be used explicitly if you want to use them as parameters or 
fields, which defeats some purposes of having the enum in the 
first place.

Work on autogenerating C++ headers should render this mostly 
redundant (people want freedom to pick their std version), 
apart from the not being able to use these enums as parameters 
due to ABI/mangling incompatibilities.

--
Iain

Thanks for the quick replying, even if a bit disapointing.

The reason why I asked is because I'd like to avoid cases where 
the enum type is used directly and that creates an alignment 
issue that implies memory overhead, i.e

enum SomeEnumeratedType // could be `ubyte` or `unsigned char`
{
   member1, member2, member3
}

class Stuff
{
   ubyte[7] allTheOtherMembers; //let's say
   SomeEnumeratedType someEnumeratedType // now a Stuff instance 
takes 16 bytes
                                         // because 
SomeEnumeratedType takes 4 bytes...
}