From af5fd99ff434529f5c8cc085bbd42483a3884781 Mon Sep 17 00:00:00 2001
From: Andreas Kling <kling@serenityos.org>
Date: Mon, 6 Nov 2023 15:18:15 +0100
Subject: [PATCH] AK: Add OFFSET_OF macro that works on class member fields

---
 AK/StdLibExtras.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/AK/StdLibExtras.h b/AK/StdLibExtras.h
index 57c986c67c..6d6dba878c 100644
--- a/AK/StdLibExtras.h
+++ b/AK/StdLibExtras.h
@@ -16,6 +16,8 @@
 
 #include <AK/Assertions.h>
 
+#define OFFSET_OF(class, member) (reinterpret_cast<ptrdiff_t>(&reinterpret_cast<class*>(0x1000)->member) - 0x1000)
+
 namespace AK {
 
 template<typename T, typename U>