From 4c7770b8d8739f8ca06dcf053072cec1709d76ed Mon Sep 17 00:00:00 2001
From: Charles Oliver Nutter <headius@headius.com>
Date: Thu, 14 Nov 2024 14:34:26 -0600
Subject: [PATCH] Don't clear the ThreadGroup when Thread terminates

CRuby does not clear the ThreadGroup set in the Thread when the
thread terminates. We do, which leads to some unpredictability in
specs that check the group against a very short-lived thread. This
patch removes the call to clear the thread's group.
---
 core/src/main/java/org/jruby/RubyThreadGroup.java | 1 -
 1 file changed, 1 deletion(-)

diff --git a/core/src/main/java/org/jruby/RubyThreadGroup.java b/core/src/main/java/org/jruby/RubyThreadGroup.java
index 9518e013d41..e74e671cbdd 100644
--- a/core/src/main/java/org/jruby/RubyThreadGroup.java
+++ b/core/src/main/java/org/jruby/RubyThreadGroup.java
@@ -120,7 +120,6 @@ void addDirectly(RubyThread rubyThread) {
     
     public void remove(RubyThread rubyThread) {
         synchronized (rubyThread) {
-            rubyThread.setThreadGroup(null);
             rubyThreadList.remove(rubyThread);
         }
     }