wolfgangp added inline comments.

================
Comment at: clang/test/SemaCXX/dllexport.cpp:437
 
+class Base {};
+class __declspec(dllexport) ExportedClass {};
----------------
hans wrote:
> Is this one used somewhere?
It's not. Thanks for finding it.


================
Comment at: clang/test/SemaCXX/dllexport.cpp:439
+class __declspec(dllexport) ExportedClass {};
+class __declspec(dllimport) ImportedClass {};
+
----------------
hans wrote:
> Just to double check: this case (non-template base class) worked before this 
> patch too, right?
Right. I just added the case for good measure. Our case is about allowing a 
dll{ex,im}ported class that is called into existence, so to speak (i.e. 
instantiated), with template arguments that cause it to have non-external 
linkage. There is no question about the linkage of the non-template base 
classes. 


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D146338/new/

https://reviews.llvm.org/D146338

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