per-ractor Random::DEFAULT

Random generators are not Ractor-safe, so we need to prepare
per-ractor default random genearators. This patch set
`Random::DEFAULT = Randm` (not a Random instance, but the Random
class) and singleton methods like `Random.rand()` use a per-ractor
random generator.

[Feature #17322]

1 files changed, 0 insertions, 12 deletions

diff --git a/test/ruby/test_rand.rb b/test/ruby/test_rand.rb
index 2fcac2d7d0..af10a27ce0 100644
--- a/test/ruby/test_rand.rb
+++ b/test/ruby/test_rand.rb
@@ -336,18 +336,6 @@ class TestRand < Test::Unit::TestCase
     }
   end
 
-  def test_default
-    r1 = Random::DEFAULT.dup
-    r2 = Random::DEFAULT.dup
-    3.times do
-      x0 = rand
-      x1 = r1.rand
-      x2 = r2.rand
-      assert_equal(x0, x1)
-      assert_equal(x0, x2)
-    end
-  end
-
   def test_marshal
     bug3656 = '[ruby-core:31622]'
     assert_raise(TypeError, bug3656) {