diff --git a/ChangeLog b/ChangeLog
index 132d1b36ce..c57503bf16 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri May 14 13:30:39  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
+
+	* test/ruby/test_float.rb: Add test for util.c revision 1.42.
+
 Fri May 14 12:13:46  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
 
 	* util.c (ruby_strtod): strtod("0", &end); => end should point '\0'.
diff --git a/test/ruby/test_float.rb b/test/ruby/test_float.rb
index 6fae9bf493..2faf1b0456 100644
--- a/test/ruby/test_float.rb
+++ b/test/ruby/test_float.rb
@@ -61,6 +61,8 @@ class TestFloat < Test::Unit::TestCase
     assert(a.abs < Float::EPSILON)
     a = Float("-0.0")
     assert(a.abs < Float::EPSILON)
+    a = Float("0." + "00" * Float::DIG + "1")
+    assert(a != 0.0)
     # add expected behaviour here.
   end
 end