[LLVMdev] Type inconsistency in LLVM 3.1: CGDebugInfo.cpp

[Benjamin Kramer]

On 09.08.2012, at 19:43, "Gaster, Benedict" <Benedict.Gaster at amd.com> wrote:

> I’m probably missing something simple here but in:
>  
> CGDebugInfo.h:
>  
>    std::vector<std::pair<void *, llvm::WeakVH> >ReplaceMap;
>  
> but then in
>  
> CGDebugInfo.cpp:
>  
>   llvm::DIType TC = getTypeOrNull(Ty);
>  
>   void * v = Ty.getAsOpaquePtr();
>   std::pair<void *, llvm::WeakVH> tmp = std::make_pair(v, TC);
>  
>   if (TC.Verify() && TC.isForwardDecl())
>     ReplaceMap.push_back(Ty.getTypeOrNull(), TC);
>  
> Note that TC is of type llvm:DIType and not WeakVH.
>  
> What am I missing, as this does not compile under Visual Studio 2012 RC?

Tricky code, DIType (or rather its superclass DIDescriptor) implicitly converts to MDNode* via a operator overload. MDNode is a subclass of Value, and WeakVH is constructible from Value*.

Wouldn't surprise me if MSVC has problems eating that, lots of magic involved here.

- Ben
>  
> Regards,
>  
> Ben
>  
> - Benedict R. Gaster
> Enjoy Berlin and submit a paper to Multiprog 2013: http://multiprog.ac.upc.edu/
>  
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