From c9e0d53dc93d11e89198e1d542df397272eb7d2c Mon Sep 17 00:00:00 2001
From: Felix Lange <fjl@twurst.com>
Date: Wed, 14 Aug 2024 20:02:56 +0200
Subject: [PATCH] memsize: panic on Go 1.23

---
 runtimefunc_go121.go |  4 ++--
 runtimefunc_go123.go | 12 ++++++++++++
 2 files changed, 14 insertions(+), 2 deletions(-)
 create mode 100644 runtimefunc_go123.go

diff --git a/runtimefunc_go121.go b/runtimefunc_go121.go
index 17ea979..12b9286 100644
--- a/runtimefunc_go121.go
+++ b/runtimefunc_go121.go
@@ -1,5 +1,5 @@
-//go:build go1.21
-// +build go1.21
+//go:build go1.21 && !go1.23
+// +build go1.21,!go1.23
 
 package memsize
 
diff --git a/runtimefunc_go123.go b/runtimefunc_go123.go
new file mode 100644
index 0000000..fd1ca8f
--- /dev/null
+++ b/runtimefunc_go123.go
@@ -0,0 +1,12 @@
+//go:build go1.23
+// +build go1.23
+
+package memsize
+
+type stwReason uint8
+
+const stwReadMemStats stwReason = 7
+
+func stopTheWorld(reason stwReason) {
+	panic("memsize is not supported with Go >= 1.23")
+}