arphaman added inline comments.

================
Comment at: lib/Parse/ParseDeclCXX.cpp:3818-3819
+  if (ScopeName && (ScopeName->getName() == "gnu" ||
+                    (ScopeName->getName() == "clang" &&
+                     AttrName->isStr("external_source_symbol"))))
     // GNU-scoped attributes have some special cases to handle GNU-specific
----------------
aaron.ballman wrote:
> aaron.ballman wrote:
> > I don't really like hard-coding a list of attributes like this. I think you 
> > should handle clang-namespaced attributes with a separate helper function.
> This still isn't quite what I was looking for -- the helper function I was 
> talking about was a replacement for `ParseGNUAttributeArgs()`. I'm sorry if I 
> was unclear.
> 
> I think we should have a `ParseClangAttributeArgs()` that handles your custom 
> parsing; it can then call through to `ParseAttributeArgsCommon()` for common 
> argument handling in the same way `ParseGNUAttributeArgs()` does. So the 
> predicate would be `else if (ScopeName && ScopeName->getName() == "clang")`.
I see, I added `ParseClangAttributeArgs` in the updated patch.


Repository:
  rL LLVM

https://reviews.llvm.org/D29819



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