From bb6e706590540da260e578a804f0e703b5ce2957 Mon Sep 17 00:00:00 2001
From: Nathaniel Wesley Filardo <nfilardo@microsoft.com>
Date: Tue, 24 Aug 2021 11:52:06 +0100
Subject: [PATCH] NFC: Add Concept for equality modulo references

---
 src/ds/concept.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/ds/concept.h b/src/ds/concept.h
index b49545c..2e48244 100644
--- a/src/ds/concept.h
+++ b/src/ds/concept.h
@@ -39,6 +39,13 @@ namespace snmalloc
   concept ConceptSame = std::is_same<T, U>::value;
 #  endif
 
+  /**
+   * Equivalence mod std::remove_reference
+   */
+  template<typename T, typename U>
+  concept ConceptSameModRef =
+    ConceptSame<std::remove_reference_t<T>, std::remove_reference_t<U>>;
+
   /**
    * Some of the types in snmalloc are circular in their definition and use
    * templating as a lazy language to carefully tie knots and only pull on the