From 9cee637a84608fb4a67725fb8c2340c9081146a2 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 7 May 2022 00:22:33 +0100
Subject: Add additional addition operators to safe for increment/pointers

---
 netfs/ice/numeric.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/netfs/ice/numeric.h b/netfs/ice/numeric.h
index 16af1f4..e47dc27 100644
--- a/netfs/ice/numeric.h
+++ b/netfs/ice/numeric.h
@@ -81,6 +81,30 @@ operator+(const Left left, const safe<Right> right)
 	return left + static_cast<Left>(right);
 }
 
+template<std::integral Left, std::integral Right>
+auto
+operator+=(Left & left, const safe<Right> right)
+{
+	return left += static_cast<Left>(right);
+}
+
+template<typename T>
+concept pointer = std::is_pointer_v<T>;
+
+template<pointer Left, std::integral Right>
+auto
+operator+=(Left & left, const safe<Right> right)
+{
+	return left += static_cast<Right>(right);
+}
+
+template<pointer Left, std::integral Right>
+auto
+operator+(const Left left, const safe<Right> right)
+{
+	return left + static_cast<Right>(right);
+}
+
 template<std::integral Left, std::integral Right>
 auto
 operator+(const safe<Left> left, const Right right)
-- 
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