diff --git a/lib/StaticAnalyzer/Checkers/ExprEngine.cpp b/lib/StaticAnalyzer/Checkers/ExprEngine.cpp
index 9fef6d8..3f77244 100644
--- a/lib/StaticAnalyzer/Checkers/ExprEngine.cpp
+++ b/lib/StaticAnalyzer/Checkers/ExprEngine.cpp
@@ -835,6 +835,7 @@
     case Stmt::CharacterLiteralClass:
     case Stmt::CXXBoolLiteralExprClass:
     case Stmt::FloatingLiteralClass:
+    case Stmt::SizeOfPackExprClass:
       Dst.Add(Pred); // No-op. Simply propagate the current state unchanged.
       break;