[cfe-dev] Beginnings of C++ access control

[Tim Northover]

Hello,

I've been working on implementing C++ access control in the Sema stage, and 
now have a very preliminary patch (hopefully attached, otherwise inline in a 
followup -- still not sure if the list supports attachments).

At the moment it's limited to explicit 'obj.mem' lookups, but I thought I'd 
send it here to make sure I'm on roughly the right track before fiddling with 
every single possible use. It should be reasonably easy to extent to other 
contexts.

Here are a few things I'd particularly welcome comments on:

The beginning of AccessMemberFromRecord (importing anonymous struct/union defs 
into the outer class) feels like it ought to be reinventing the wheel, is 
there some handy function I should be using instead? If there isn't a reusable 
version it should probably be involved in private resolution too in 
CheckMemberAccess. I've held off putting it there for now.

I've reused the access specifier AS_none to denote an inaccessible member. 
Would people prefer me to invent a new enum for this situation?

Tim.


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