MaskRay added a comment.

In D94735#2500129 <https://reviews.llvm.org/D94735#2500129>, @dblaikie wrote:

> Ah, seems I was confused by the patch title - it looks like these values 
> aren't used for FlagFwdDecl records - forward declarations bail out 3356, not 
> using the file/line created on 3338/3339.
>
> Seems like this change might lead to a situation of files but no line 
> numbers, which seems a bit strange to me - well, at least for __va_list_tag, 
> which isn't anymore associated with the file than with the line. Perhaps both 
> should be addressed?

`__va_list_tag` is synthesized by Clang `CreateX86_64ABIBuiltinVaListDecl` for 
`__builtin_va_arg`. I think giving it the filename of `CurLoc` is fine. Giving 
it the line of the `CurLoc` is arbitrary. `CurLoc` may be from a very unrelated 
thing.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D94735/new/

https://reviews.llvm.org/D94735

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