From 803ed42dfd6907224c6cc25f032dcbc0c14555a6 Mon Sep 17 00:00:00 2001
From: Kent Ross <k@mad.cash>
Date: Mon, 15 Sep 2025 17:53:57 -0700
Subject: [PATCH] only unset the runtime finalizer once per group

---
 group.go | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/group.go b/group.go
index d1966c3..b619f0f 100644
--- a/group.go
+++ b/group.go
@@ -164,8 +164,9 @@ func (n *runner) Wait() {
 }
 
 func (n *runner) waitWithoutCanceling() {
-	n.awaited.Store(true)
-	runtime.SetFinalizer(n, nil)
+	if !n.awaited.Swap(true) {
+		runtime.SetFinalizer(n, nil) // unset the finalizer the first time
+	}
 }
 
 func (n *runner) getContext() (context.Context, context.CancelCauseFunc) {
@@ -247,8 +248,9 @@ func (g *group) Wait() {
 }
 
 func (g *group) waitWithoutCanceling() {
-	g.awaited.Store(true)
-	runtime.SetFinalizer(g, nil)
+	if !g.awaited.Swap(true) {
+		runtime.SetFinalizer(g, nil) // unset the finalizer the first time
+	}
 	g.wg.Wait()
 	g.checkPanic()
 }