fix a memory leak introduced in 8bbd319

This commit fixes a memory leak introduced in an early part of the
variable width allocation project that would prevent the rb_classext_t
struct from being free'd when the class is swept.

1 files changed, 9 insertions, 0 deletions

diff --git a/test/ruby/test_class.rb b/test/ruby/test_class.rb
index 4ae230f91e..eb448e952a 100644
--- a/test/ruby/test_class.rb
+++ b/test/ruby/test_class.rb
@@ -769,4 +769,13 @@ class TestClass < Test::Unit::TestCase
       assert(c.descendants.size <= 100)
     end
   end
+
+  def test_classext_memory_leak
+    assert_no_memory_leak([], <<-PREP, <<-CODE, rss: true)
+code = proc { Class.new }
+1_000.times(&code)
+PREP
+3_000_000.times(&code)
+CODE
+  end
 end