1 files changed, 8 insertions, 1 deletions
diff --git a/lib/Serialization/ASTWriterStmt.cpp b/lib/Serialization/ASTWriterStmt.cpp
index 89c293fe6c..27261dbb2a 100644
--- a/lib/Serialization/ASTWriterStmt.cpp
+++ b/lib/Serialization/ASTWriterStmt.cpp
@@ -150,7 +150,7 @@ namespace clang {
     void VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E);
     void VisitBinaryTypeTraitExpr(BinaryTypeTraitExpr *E);
     void VisitCXXNoexceptExpr(CXXNoexceptExpr *E);
-
+    void VisitPackExpansionExpr(PackExpansionExpr *E);
     void VisitOpaqueValueExpr(OpaqueValueExpr *E);
   };
 }
@@ -1296,6 +1296,13 @@ void ASTStmtWriter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
   Code = serialization::EXPR_CXX_NOEXCEPT;
 }
 
+void ASTStmtWriter::VisitPackExpansionExpr(PackExpansionExpr *E) {
+  VisitExpr(E);
+  Writer.AddSourceLocation(E->getEllipsisLoc(), Record);
+  Writer.AddStmt(E->getPattern());
+  Code = serialization::EXPR_PACK_EXPANSION;
+}
+
 void ASTStmtWriter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
   VisitExpr(E);
   Code = serialization::EXPR_OPAQUE_VALUE;