[clang] [clang][ASTImporter] Not using primary context in lookup table (PR #118466)

[Michael Buch via cfe-commits]

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@@ -3165,6 +3165,7 @@ ExpectedDecl ASTNodeImporter::VisitRecordDecl(RecordDecl *D) {
                 if (Error Err = ImportImplicitMethods(DCXX, FoundCXX))
                   return std::move(Err);
             }
+            return FoundDef;
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Michael137 wrote:

So currently what happens is that we create a new decl and connect it to `FoundDef` on a redeclaration chain? LLDB is particularly sensitive to this particular code-path, so I'd say it's best to try do this in a separate PR so we can focus in on this

https://github.com/llvm/llvm-project/pull/118466