[cfe-commits] [cfe-dev] automatically generated declarations in the AST

Sean Hunt rideau3 at gmail.com
Thu Aug 19 12:09:52 PDT 2010

On 08/19/2010 12:53 PM, Jan Bierbaum wrote:
> Douglas Gregor meinte am 19.08.2010 19:13:
>>> Is there any mechanism to identify automatically generated nodes
>>> inside the AST?
>> Decl::isImplicit()
> Thanks, that helps a lot!
> But even that does not cover all the auto insertions. The first
> instruction in every translation unit is
> typedef char* __builtin_va_list;
> which states its source location as<built-in>:102:15. This is not
> marked implicit. I guess it's from some internal include directive. In
> that case I can just check that it doesn't come from the main file. Are
> there any other things like that I should keep an eye on?

Yes, this is in the builtin prelude put at the front of every TU, which 
also includes things like predefined macros and the like.


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