From 94015e0dce38d238d428b60b46dcb9f3caef445f Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@peterzhu.ca>
Date: Mon, 27 Nov 2023 14:45:47 -0500
Subject: Guard match from GC when scanning string

We need to guard match from GC because otherwise it could end up being
reclaimed or moved in compaction.
---
 test/ruby/test_string.rb | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'test/ruby')

diff --git a/test/ruby/test_string.rb b/test/ruby/test_string.rb
index 22bec09855..fdf23ad90b 100644
--- a/test/ruby/test_string.rb
+++ b/test/ruby/test_string.rb
@@ -1622,6 +1622,10 @@ CODE
     assert_equal(%w[1 2 3], S("a1 a2 a3").scan(/a\K./))
   end
 
+  def test_scan_gc_compact_stress
+    EnvUtil.under_gc_compact_stress { assert_equal([["1a"], ["2b"], ["3c"]], S("1a2b3c").scan(/(\d.)/)) }
+  end
+
   def test_scan_segv
     bug19159 = '[Bug #19159]'
     assert_nothing_raised(Exception, bug19159) do
-- 
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