1 files changed, 6 insertions, 5 deletions
diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index 40c5b1471f..da4a0b585d 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -200,15 +200,16 @@ class TestGc < Test::Unit::TestCase
 
   def test_expand_heap
     assert_separately %w[--disable-gem], __FILE__, __LINE__, <<-'eom'
-    base_length = GC.stat[:heap_length]
-    (base_length * 500).times{ 'a' }
     GC.start
-    assert_equal base_length, GC.stat[:heap_length], "invalid heap expanding"
+    base_length = GC.stat[:heap_eden_page_length]
+    (base_length * 500).times{ 'a'; nil }
+    GC.start
+    assert_equal base_length, GC.stat[:heap_eden_page_length], "invalid heap expanding"
 
     a = []
-    (base_length * 500).times{ a << 'a' }
+    (base_length * 500).times{ a << 'a'; nil }
     GC.start
-    assert base_length < GC.stat[:heap_length]
+    assert base_length < GC.stat[:heap_eden_page_length]
     eom
   end
 end