cpp_binder, a not-yet-useful tool for generating C++ bindings

[Ola Fosheim Grøstad via Digitalmars-d-announce]

On Tuesday, 22 September 2015 at 15:11:55 UTC, Kagamin wrote:
> Another C feature you didn't know about: the standard allows to 
> create a mutable pointer to const data and mutate it.

I didn't? Of course I did. In C++ other threads can write to 
const objects. The function receiving a const objects is not 
supposed to write to const. Const cast is supposed to be used for 
calling legacy const interfaces without a const signature.

> But most of the time when you see const in C, it works as 
> expected, so usually there shouldn't be a problem except for 
> mangling.

No it doesn't. C++ even has an override for const object fields 
called "mutable", so that you can have things like reference 
counts in const objects.

Either D const is _always_ ensured or the compiler have to assume 
that it is _always_ violated after FFI.