From f4470eb794218e2cfda18108392f61bda3d0d470 Mon Sep 17 00:00:00 2001
From: Martin Kinkelin <mkinkelin@symmetryinvestments.com>
Date: Mon, 31 Jan 2022 16:26:47 +0100
Subject: [PATCH] Fix Issue 22717 - TypeInfo_Struct.equals swaps lhs and rhs
 parameters

---
 src/object.d | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/object.d b/src/object.d
index 7bb6bec7ed..35fb6c3658 100644
--- a/src/object.d
+++ b/src/object.d
@@ -1885,8 +1885,17 @@ class TypeInfo_Struct : TypeInfo
             return false;
         else if (xopEquals)
         {
-            const dg = _memberFunc(p2, xopEquals);
-            return dg.xopEquals(p1);
+            // TODO: remove as soon as `git describe` for DMD master yields v2.099+
+            static if (__VERSION__ < 2099)
+            {
+                const dg = _memberFunc(p2, xopEquals);
+                return dg.xopEquals(p1);
+            }
+            else
+            {
+                const dg = _memberFunc(p1, xopEquals);
+                return dg.xopEquals(p2);
+            }
         }
         else if (p1 == p2)
             return true;