Index: clang/lib/Sema/SemaExprMember.cpp
===================================================================
--- clang/lib/Sema/SemaExprMember.cpp
+++ clang/lib/Sema/SemaExprMember.cpp
@@ -767,7 +767,7 @@
     QualType RecordTy = BaseType;
     if (IsArrow) RecordTy = RecordTy->castAs<PointerType>()->getPointeeType();
     if (LookupMemberExprInRecord(
-            *this, R, nullptr, RecordTy->getAs<RecordType>(), OpLoc, IsArrow,
+            *this, R, nullptr, RecordTy->castAs<RecordType>(), OpLoc, IsArrow,
             SS, TemplateArgs != nullptr, TemplateKWLoc, TE))
       return ExprError();
     if (TE)