nobu	2017-07-19 12:16:58 +0900 (Wed, 19 Jul 2017)

  New Revision: 59368

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=59368

  Log:
    random.c: ensure initialized
    
    * random.c (get_rnd, try_get_rnd): ensure initialized to get rid
      of crash in forked processes.  [ruby-core:82100] [Bug #13753]

  Modified files:
    trunk/random.c
    trunk/test/ruby/test_rand.rb
Index: test/ruby/test_rand.rb
===================================================================
--- test/ruby/test_rand.rb	(revision 59367)
+++ test/ruby/test_rand.rb	(revision 59368)
@@ -464,6 +464,10 @@ END https://github.com/ruby/ruby/blob/trunk/test/ruby/test_rand.rb#L464
     assert_fork_status(1, bug5661) {stable.rand(4)}
     r1, r2 = *assert_fork_status(2, bug5661) {stable.rand}
     assert_equal(r1, r2, bug5661)
+
+    assert_fork_status(1, '[ruby-core:82100] [Bug #13753]') do
+      Random::DEFAULT.rand(4)
+    end
   rescue NotImplementedError
   end
 
Index: random.c
===================================================================
--- random.c	(revision 59367)
+++ random.c	(revision 59368)
@@ -338,7 +338,7 @@ get_rnd(VALUE obj) https://github.com/ruby/ruby/blob/trunk/random.c#L338
 {
     rb_random_t *ptr;
     TypedData_Get_Struct(obj, rb_random_t, &random_data_type, ptr);
-    return ptr;
+    return rand_start(ptr);
 }
 
 static rb_random_t *
@@ -348,7 +348,7 @@ try_get_rnd(VALUE obj) https://github.com/ruby/ruby/blob/trunk/random.c#L348
 	return rand_start(&default_rand);
     }
     if (!rb_typeddata_is_kind_of(obj, &random_data_type)) return NULL;
-    return DATA_PTR(obj);
+    return rand_start(DATA_PTR(obj));
 }
 
 /* :nodoc: */

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