From 1c89b1ec6040f0b4ab6d1f7e3a7b5b4b0c459dd4 Mon Sep 17 00:00:00 2001
From: Yusuke Endoh <mame@ruby-lang.org>
Date: Thu, 1 May 2025 13:36:24 +0900
Subject: [PATCH] Reset `GC.stress` to avoid slow coverage processing during
 process exit

---
 tool/test-coverage.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tool/test-coverage.rb b/tool/test-coverage.rb
index 055577feea..28ef0bf7f8 100644
--- a/tool/test-coverage.rb
+++ b/tool/test-coverage.rb
@@ -114,6 +114,10 @@ pid = $$
 pwd = Dir.pwd
 
 at_exit do
+  # Some tests leave GC.stress enabled, causing slow coverage processing.
+  # Reset it here to avoid performance issues.
+  GC.stress = false
+
   exit_exc = $!
 
   Dir.chdir(pwd) do