[cfe-dev] Visiting anonymous unions

[Philip Craig]

On Sat, Aug 18, 2012 at 6:28 AM, Manuel Klimek <klimek at google.com> wrote:
> On Fri, Aug 17, 2012 at 9:52 PM, John McCall <rjmccall at apple.com> wrote:
>> On Aug 17, 2012, at 6:23 AM, Sergejs Belajevs wrote:
>>> I am writing a source-to-source transformation tool and I need a way
>>> to check if function contains at least one anonymous union inside.
>>
>> You should see a DeclStmt that declares a single VarDecl whose type
>> is a RecordType whose RecordDecl has the isAnonymousStructOrUnion()
>> bit set.
>
> I have played around with that a bit - I have not found a RecordDecl
> within the FunctionDecl (but I have found a VarDecl) - if you say that
> should be there, that might be a problem with RAV...

I think John meant that the RecordDecl is only referenced via the
RecordType of the VarDecl. RAV currently doesn't traverse into the
RecordType though (same as in PR13618).