From 909afcb4fca393ce75cc63edc7656fd95a64f0f9 Mon Sep 17 00:00:00 2001
From: Peter Zhu <peter@peterzhu.ca>
Date: Wed, 1 Nov 2023 13:47:26 -0400
Subject: [PATCH] Fix SystemStackError in test_run_out_of_shape_for_class_cvar

---
 test/ruby/test_shapes.rb | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/ruby/test_shapes.rb b/test/ruby/test_shapes.rb
index 11eb66e7a3..b052a4a647 100644
--- a/test/ruby/test_shapes.rb
+++ b/test/ruby/test_shapes.rb
@@ -278,13 +278,15 @@ class TestShapes < Test::Unit::TestCase
   def test_run_out_of_shape_for_class_cvar
     assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
     begin;
-      c = Class.new
       i = 0
       while RubyVM::Shape.shapes_available > 0
+        c = Class.new
         c.class_variable_set(:"@@i#{i}", 1)
         i += 1
       end
 
+      c = Class.new
+
       c.class_variable_set(:@@a, 1)
       assert_equal(1, c.class_variable_get(:@@a))