stack_unwinding"></a></span><a class="link" href="asymmetric.html#coroutine.coroutine.asymmetric.stack_unwinding">Stack
        unwinding</a>
      </h5>
<p>
        Sometimes it is necessary to unwind the stack of an unfinished coroutine
        to destroy local stack variables so they can release allocated resources
        (RAII pattern). The <code class="computeroutput"><span class="identifier">attributes</span></code>
        argument of the coroutine constructor indicates whether the destructor should