1 files changed, 7 insertions, 6 deletions
diff --git a/Source/cmXCode21Object.cxx b/Source/cmXCode21Object.cxx
index a9bb2ef543..6b133a9e89 100644
--- a/Source/cmXCode21Object.cxx
+++ b/Source/cmXCode21Object.cxx
@@ -30,11 +30,12 @@ void cmXCode21Object::PrintComment(std::ostream& out)
   out << " */";
 }
 
-void cmXCode21Object::PrintList(std::vector<cmXCodeObject*> const& v,
-                                std::ostream& out, PBXType t)
+void cmXCode21Object::PrintList(
+  std::vector<std::unique_ptr<cmXCodeObject>> const& v, std::ostream& out,
+  PBXType t)
 {
   bool hasOne = false;
-  for (auto obj : v) {
+  for (const auto& obj : v) {
     if (obj->GetType() == OBJECT && obj->GetIsA() == t) {
       hasOne = true;
       break;
@@ -44,7 +45,7 @@ void cmXCode21Object::PrintList(std::vector<cmXCodeObject*> const& v,
     return;
   }
   out << "\n/* Begin " << PBXTypeNames[t] << " section */\n";
-  for (auto obj : v) {
+  for (const auto& obj : v) {
     if (obj->GetType() == OBJECT && obj->GetIsA() == t) {
       obj->Print(out);
     }
@@ -52,8 +53,8 @@ void cmXCode21Object::PrintList(std::vector<cmXCodeObject*> const& v,
   out << "/* End " << PBXTypeNames[t] << " section */\n";
 }
 
-void cmXCode21Object::PrintList(std::vector<cmXCodeObject*> const& v,
-                                std::ostream& out)
+void cmXCode21Object::PrintList(
+  std::vector<std::unique_ptr<cmXCodeObject>> const& v, std::ostream& out)
 {
   cmXCodeObject::Indent(1, out);
   out << "objects = {\n";