* thread.c (thread_create_core): set thread group before creating

  thread.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15115 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 0 deletions

diff --git a/bootstraptest/test_thread.rb b/bootstraptest/test_thread.rb
index 9711535d72..7810455c87 100644
--- a/bootstraptest/test_thread.rb
+++ b/bootstraptest/test_thread.rb
@@ -160,6 +160,13 @@ assert_equal %q{[1, 1]}, %q{
   sleep 0.1
   [thg.list.size, ThreadGroup::Default.list.size]
 }
+assert_equal %q{true}, %q{
+  thg = ThreadGroup.new
+
+  t = Thread.new{sleep 5}
+  thg.add t
+  thg.list.include?(t)
+}
 assert_equal %q{[true, nil, true]}, %q{
   /a/ =~ 'a'
   $a = $~