[clang] [BoundsSafety][Sema] Allow counted_by and counted_by_or_null on pointers where the pointee type is incomplete but potentially completable (PR #106321)

[Dan Liew via cfe-commits]

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@@ -3343,6 +3363,8 @@ class CountAttributedType final
   static bool classof(const Type *T) {
     return T->getTypeClass() == CountAttributed;
   }
+
+  StringRef GetAttributeName(bool WithMacroPrefix) const;
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delcypher wrote:

I filed #113585 to track fixing this properly. I don't see a way of fixing this until we have a good way to get the TypeLoc for the attribute (#113582).

https://github.com/llvm/llvm-project/pull/106321