random.c: use bytes

* random.c (obj_random_bytes): base on bytes method instead of
  rand method, not to call toplevel rand method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54968 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 11 insertions, 0 deletions

diff --git a/test/ruby/test_rand.rb b/test/ruby/test_rand.rb
index d4258a7f1c..c24d6cd1ff 100644
--- a/test/ruby/test_rand.rb
+++ b/test/ruby/test_rand.rb
@@ -526,6 +526,17 @@ END
     assert_equal(2, gen.limit, bug7935)
   end
 
+  def test_random_ulong_limited_no_rand
+    c = Class.new do
+      undef rand
+      def bytes(n)
+        "\0"*n
+      end
+    end
+    gen = c.new.extend(Random::Formatter)
+    assert_equal(1, [1, 2].sample(random: gen))
+  end
+
   def test_default_seed
     assert_separately([], <<-End)
       seed = Random::DEFAULT::seed