[cfe-dev] [PATCH] extend __interface support

[David Robins]

On Tue, Aug 14, 2012 at 10:01:01AM -0700, John McCall wrote:
> > class-key from the C++ spec) do you mean that it should have its own
> > decl spec type TST_interface and TagTypeKind TTK_Interface rather than
> > the ms_interface attribute?
> 
> Yeah, that's what I was suggesting.  That lets arbitrary clients remember
> the exact intent a little easier.

I'll work up a patch that works that way and post when ready.

> > Note that MS diagnostics refer to __interface as 'struct', e.g.
> > 
> > 	int.cpp(4) : warning C4099: 'Y' : type name first seen using 'struct'
> > 	now seen using 'class'
> > 
> > Does that matter at all?
> 
> That's interesting.  Maybe MSVC just defines this as a macro?  Have you tried
> running it through the preprocessor?  Although it's more likely that they're
> just being lazy about their diagnostics.

No, it's not an actual macro - and can't be, because of the way it
forces member function decls to be pure virtual.

(BTW, I dropped you from the 'To' line this time and sent direct to the
list address only, which doesn't seem to cause messages to be dropped -
let me know.)