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-rw-r--r--test/ruby/test_gc.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index f72a59aaf8..67fd40a51e 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -290,7 +290,7 @@ class TestGc < Test::Unit::TestCase
base_length = GC.stat[:heap_eden_pages]
(base_length * 500).times{ 'a' }
GC.start
- assert_in_delta base_length, (v = GC.stat[:heap_eden_pages]), 2,
+ assert_in_epsilon base_length, (v = GC.stat[:heap_eden_pages]), 1/8r,
"invalid heap expanding (base_length: #{base_length}, GC.stat[:heap_eden_pages]: #{v})"
a = []