diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 7bf1071..dd7cb58 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -3817,6 +3817,7 @@
   // Look up absolute value function in TU scope.
   DeclarationName DN(&S.Context.Idents.get(AbsName));
   LookupResult R(S, DN, Loc, Sema::LookupAnyName);
+  R.suppressDiagnostics();
   S.LookupName(R, S.TUScope);
 
   // Skip notes if multiple results found in lookup.