diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 5a5e561..4b5c68a 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -1076,6 +1076,7 @@
     if (SemaBuiltinAssumeAligned(TheCall))
       return ExprError();
     break;
+  case Builtin::BI__builtin_dynamic_object_size:
   case Builtin::BI__builtin_object_size:
     if (SemaBuiltinConstantArgRange(TheCall, 1, 0, 3))
       return ExprError();