From: Eric Wong <normalperson@...>
Date: 2014-01-02T07:05:11+00:00
Subject: [ruby-core:59465] Re: [ruby-trunk - Bug #9342] [PATCH] SizedQueue#clear does not notify waiting threads in Ruby 1.9.3

I agree this is a problem.  This also affects 2.1.0 and trunk (where
SizedQueue is C).