From 8ed3e8c79b5cbccfeccee865e555b68025ee2c1f Mon Sep 17 00:00:00 2001
From: Jay Berkenbilt <ejb@ql.org>
Date: Mon, 25 Jan 2021 08:05:43 -0500
Subject: NNTree: rework iterators to be more memory efficient

Keep a std::pair internal to the iterators so that operator* can
return a reference and operator-> can work, and each can work without
copying pairs of objects around.
---
 libqpdf/QPDF.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libqpdf/QPDF.cc')

diff --git a/libqpdf/QPDF.cc b/libqpdf/QPDF.cc
index bb9b511d..f690d30a 100644
--- a/libqpdf/QPDF.cc
+++ b/libqpdf/QPDF.cc
@@ -3011,7 +3011,7 @@ QPDF::findAttachmentStreams()
         return;
     }
     QPDFNameTreeObjectHelper ef_tree(embedded_files, *this);
-    for (auto i: ef_tree)
+    for (auto const& i: ef_tree)
     {
         QPDFObjectHandle item = i.second;
         if (item.isDictionary() &&
-- 
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