From 5bd6ff22858442c7df2ee93195de2eebcff3c4d4 Mon Sep 17 00:00:00 2001
From: Chocobo1 <Chocobo1@users.noreply.github.com>
Date: Sat, 19 Dec 2020 16:38:13 +0800
Subject: [PATCH] Migrate away from deprecated `std::iterator` class

---
 src/base/utils/io.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/base/utils/io.h b/src/base/utils/io.h
index 0937d59d3..2cd3c9573 100644
--- a/src/base/utils/io.h
+++ b/src/base/utils/io.h
@@ -40,9 +40,15 @@ namespace Utils
     {
         // A wrapper class that satisfy LegacyOutputIterator requirement
         class FileDeviceOutputIterator
-            : public std::iterator<std::output_iterator_tag, void, void, void, void>
         {
         public:
+            // std::iterator_traits
+            using iterator_category = std::output_iterator_tag;
+            using difference_type = void;
+            using value_type = void;
+            using pointer = void;
+            using reference = void;
+
             explicit FileDeviceOutputIterator(QFileDevice &device, const int bufferSize = (4 * 1024));
             FileDeviceOutputIterator(const FileDeviceOutputIterator &other) = default;
             ~FileDeviceOutputIterator();