From 19db0144aeacf12fabce9f02bd44dd60f0bfb694 Mon Sep 17 00:00:00 2001
From: Ayke van Laethem <aykevanlaethem@gmail.com>
Date: Fri, 13 Jan 2023 20:02:54 +0100
Subject: [PATCH] runtime: implement internal/godebug.setUpdate as a stub

This function provides a mechanism to watch for changes to the GODEBUG
environment variable. For now, we'll not implement it. It might be
useful in the future, when it can always be added.
---
 src/runtime/runtime.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/runtime/runtime.go b/src/runtime/runtime.go
index eecedee2..1a2a0495 100644
--- a/src/runtime/runtime.go
+++ b/src/runtime/runtime.go
@@ -95,3 +95,9 @@ func KeepAlive(x interface{}) {
 func SetFinalizer(obj interface{}, finalizer interface{}) {
 	// Unimplemented.
 }
+
+//go:linkname godebug_setUpdate internal/godebug.setUpdate
+func godebug_setUpdate(update func(string, string)) {
+	// Unimplemented. The 'update' function needs to be called whenever the
+	// GODEBUG environment variable changes (for example, via os.Setenv).
+}