================
@@ -1327,6 +1327,60 @@ void 
Sema::AddImplicitMSFunctionNoBuiltinAttr(FunctionDecl *FD) {
     FD->addAttr(NoBuiltinAttr::CreateImplicit(Context, V.data(), V.size()));
 }
 
+NamedDecl *Sema::lookupExternCName(IdentifierInfo *IdentId,
+                                   SourceLocation NameLoc, Scope *curScope) {
+  LookupResult Result(*this, IdentId, NameLoc, LookupOrdinaryName);
+  LookupName(Result, curScope);
----------------
perry-ca wrote:

This is intentional.  It allows usage like:
```cpp
namespace ABC {
  extern "C" int var;
#pragma export(var)
}
```
It the scope was the TU, this example wouldn't work.

https://github.com/llvm/llvm-project/pull/141671
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