1 files changed, 7 insertions, 2 deletions
diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index a09507f6daa..55e1f132c56 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -6141,8 +6141,13 @@ QualType ASTReader::readTypeRecord(unsigned Index) {
   case TYPE_AUTO: {
     QualType Deduced = readType(*Loc.F, Record, Idx);
     AutoTypeKeyword Keyword = (AutoTypeKeyword)Record[Idx++];
-    bool IsDependent = Deduced.isNull() ? Record[Idx++] : false;
-    return Context.getAutoType(Deduced, Keyword, IsDependent);
+    bool IsDependent = false, IsPack = false;
+    if (Deduced.isNull()) {
+      IsDependent = Record[Idx] > 0;
+      IsPack = Record[Idx] > 1;
+      ++Idx;
+    }
+    return Context.getAutoType(Deduced, Keyword, IsDependent, IsPack);
   }
 
   case TYPE_DEDUCED_TEMPLATE_SPECIALIZATION: {