* rational.c (nurat_cmp): use rb_num_coerce_cmp.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23871 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sat Jun 27 16:56:33 2009  Tadayoshi Funaba  <tadf@dotrb.org>
+
+	* rational.c (nurat_cmp): use rb_num_coerce_cmp.
+
 Sat Jun 27 16:45:10 2009  Tadayoshi Funaba  <tadf@dotrb.org>
 
 	* complex.c: revised rdoc.

rational.c

@@ -979,7 +979,7 @@ nurat_cmp(VALUE self, VALUE other)
 	    return f_cmp(f_sub(num1, num2), ZERO);
 	}
       default:
-	return rb_num_coerce_bin(self, other, id_cmp);
+	return rb_num_coerce_cmp(self, other, id_cmp);
     }
 }
 

test/ruby/test_rational.rb

@@ -692,6 +692,9 @@ class Rational_Test < Test::Unit::TestCase
     assert_equal(true, Rational(0) <= Rational(0))
     assert_equal(true, Rational(0) >= Rational(0))
     assert_equal(false, Rational(0) > Rational(0))
+
+    assert_equal(nil, Rational(0) <=> nil)
+    assert_equal(nil, Rational(0) <=> 'foo')
   end
 
   def test_equal