[clang] [Clang][Sema] Diagnose class member access expressions naming non-existent members of the current instantiation prior to instantiation in the absence of dependent base classes (PR #84050)

[Erich Keane via cfe-commits]

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@@ -1287,7 +1287,10 @@ static ExprResult LookupMemberExpr(Sema &S, LookupResult &R,
     return ExprError();
 
   QualType BaseType = BaseExpr.get()->getType();
+
+#if 0
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erichkeane wrote:

Hmm?

https://github.com/llvm/llvm-project/pull/84050