From 0848c905c910adb433fd3bbf17c0de60d3e29eb7 Mon Sep 17 00:00:00 2001
From: Giulio Eulisse <10544+ktf@users.noreply.github.com>
Date: Wed, 16 Mar 2022 15:27:15 +0100
Subject: [PATCH 1/2] DPL: fix deprecated inheritance of std::iterator

---
 .../Core/include/Framework/InputRecordWalker.h      | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/Framework/Core/include/Framework/InputRecordWalker.h b/Framework/Core/include/Framework/InputRecordWalker.h
index 3bb8a65ddffe9..9f3113e88e699 100644
--- a/Framework/Core/include/Framework/InputRecordWalker.h
+++ b/Framework/Core/include/Framework/InputRecordWalker.h
@@ -55,21 +55,20 @@ class InputRecordWalker
   InputRecordWalker() = delete;
   InputRecordWalker(InputRecord& record, std::vector<InputSpec> filterSpecs = {}) : mRecord(record), mFilterSpecs(filterSpecs) {}
 
-  template <typename T>
-  using IteratorBase = std::iterator<std::forward_iterator_tag, T>;
-
   /// Iterator implementation
   /// Supports the following operations:
   /// - increment (there is no decrement, its not a bidirectional parser)
   /// - dereference operator returns @a RawDataHeaderInfo as common header
   template <typename T>
-  class Iterator : public IteratorBase<T>
+  class Iterator
   {
    public:
     using self_type = Iterator;
-    using value_type = typename IteratorBase<T>::value_type;
-    using reference = typename IteratorBase<T>::reference;
-    using pointer = typename IteratorBase<T>::pointer;
+    using iterator_category = std::input_iterator_tag;
+    using value_type = T;
+    using reference = T&;
+    using pointer = T*;
+    using difference_type = std::ptrdiff_t;
     // the iterator over the input routes
     using input_iterator = decltype(std::declval<InputRecord>().begin());
 

From ff2764c38563b0d633389c14157d3af6f4fe63c5 Mon Sep 17 00:00:00 2001
From: Giulio Eulisse <10544+ktf@users.noreply.github.com>
Date: Fri, 18 Mar 2022 11:48:01 +0100
Subject: [PATCH 2/2] Use correct tag for iterator.

---
 Framework/Core/include/Framework/InputRecordWalker.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Framework/Core/include/Framework/InputRecordWalker.h b/Framework/Core/include/Framework/InputRecordWalker.h
index 9f3113e88e699..a67a7dfb04820 100644
--- a/Framework/Core/include/Framework/InputRecordWalker.h
+++ b/Framework/Core/include/Framework/InputRecordWalker.h
@@ -64,7 +64,7 @@ class InputRecordWalker
   {
    public:
     using self_type = Iterator;
-    using iterator_category = std::input_iterator_tag;
+    using iterator_category = std::forward_iterator_tag;
     using value_type = T;
     using reference = T&;
     using pointer = T*;