diff --git a/clang/lib/StaticAnalyzer/Checkers/ExprEngine.cpp b/clang/lib/StaticAnalyzer/Checkers/ExprEngine.cpp
index c522e72..9fef6d8 100644
--- a/clang/lib/StaticAnalyzer/Checkers/ExprEngine.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/ExprEngine.cpp
@@ -771,6 +771,7 @@
     case Stmt::UnresolvedLookupExprClass:
     case Stmt::UnresolvedMemberExprClass:
     case Stmt::CXXNoexceptExprClass:
+    case Stmt::PackExpansionExprClass:
     {
       SaveAndRestore<bool> OldSink(Builder->BuildSinks);
       Builder->BuildSinks = true;