diff --git a/ChangeLog b/ChangeLog
index a6bd57c80f..88336249f0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+Sat Nov 17 00:50:23 2012  CHIKANAGA Tomoyuki  <nagachika@ruby-lang.org>
+
+	* marshal.c (w_object): add flonum to arg->data to keep reference index
+	  consistency. [ruby-core:49323] [Bug #7348]
+
+	* test/ruby/test_marshal.rb: add a test for above.
+
 Sat Nov 17 00:40:25 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* common.mk (incs): dist files need probes.dmyh.
diff --git a/marshal.c b/marshal.c
index ae383829d2..9e81d3cf8c 100644
--- a/marshal.c
+++ b/marshal.c
@@ -637,6 +637,7 @@ w_object(VALUE obj, struct dump_arg *arg, int limit)
 	w_symbol(SYM2ID(obj), arg);
     }
     else if (FLONUM_P(obj)) {
+	st_add_direct(arg->data, obj, arg->data->num_entries);
 	w_byte(TYPE_FLOAT, arg);
 	w_float(RFLOAT_VALUE(obj), arg);
     }
diff --git a/test/ruby/test_marshal.rb b/test/ruby/test_marshal.rb
index 85cec0adca..e68839472d 100644
--- a/test/ruby/test_marshal.rb
+++ b/test/ruby/test_marshal.rb
@@ -492,4 +492,11 @@ class TestMarshal < Test::Unit::TestCase
     assert_equal(Rational(1, 2), Marshal.load("\x04\bU:\rRational[\ai\x06i\a"))
     assert_raise(ArgumentError){Marshal.load("\x04\bU:\rRational[\bi\x00i\x00i\x00")}
   end
+
+  def test_marshal_flonum_reference
+    bug7348 = '[ruby-core:49323]'
+    e = []
+    ary = [ [2.0, e], [e] ]
+    assert_equal(ary, Marshal.load(Marshal.dump(ary)), bug7348)
+  end
 end