* lib/thread.rb (ConditionVariable#wait): ensure to remove the current

  thread from waiters.  [ruby-core:29835]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27711 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/thread.rb b/lib/thread.rb
index f3831a7425..88f834c550 100644
--- a/lib/thread.rb
+++ b/lib/thread.rb
@@ -69,6 +69,10 @@ class ConditionVariable
         @waiters.push(Thread.current)
       end
       mutex.sleep timeout
+    ensure
+      @waiters_mutex.synchronize do
+        @waiters.delete(Thread.current)
+      end
     end
     self
   end