     Parallelism Draft Technical Specification</a> proposes a <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">exception_list</span></code> exception capable of delivering
          a collection of <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">exception_ptr</span></code>s. Until that becomes universally
          available, let's fake up an <code class="computerout