<html>
 <body>
  <div style="font-family: Verdana, Arial, Helvetica, Sans-Serif;">
   <table bgcolor="#f9f3c9" width="100%" cellpadding="8" style="border: 1px #c9c399 solid;">
    <tr>
     <td>
      This is an automatically generated e-mail. To reply, visit:
      <a href="https://reviewboard.asterisk.org/r/1353/">https://reviewboard.asterisk.org/r/1353/</a>
     </td>
    </tr>
   </table>
   <br />





 <pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">This approach seems fraught with unintended side effects.

Please see if the patch for https://reviewboard.asterisk.org/r/1323/ actually fixes this issue.</pre>
 <br />







<p>- rmudgett</p>


<br />
<p>On August 5th, 2011, 4:27 a.m., Alec Davis wrote:</p>






<table bgcolor="#fefadf" width="100%" cellspacing="0" cellpadding="8" style="background-image: url('https://reviewboard.asterisk.org/media/rb/images/review_request_box_top_bg.png'); background-position: left top; background-repeat: repeat-x; border: 1px black solid;">
 <tr>
  <td>

<div>Review request for Asterisk Developers and rmudgett.</div>
<div>By Alec Davis.</div>


<p style="color: grey;"><i>Updated Aug. 5, 2011, 4:27 a.m.</i></p>




<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
<table width="100%" bgcolor="#ffffff" cellspacing="0" cellpadding="10" style="border: 1px solid #b8b5a0">
 <tr>
  <td>
   <pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">If ast_can_pickup() can pickup the channel, it needs to change the chan-&gt;_state to AST_STATE_PICKUP.

Example dialplan below causes a segfault as ast-hangup removes the same channel as is being picked up.

How to crash it!
  dial 801 from 1 phone.
  from 2 phones simultaneously dial 800.
  segfault!

exten =&gt; 801,1,NoOp(Local pickup debug: Ring Phones) 
exten =&gt; 801,n,Dial(Local/823@en-phone&amp;Local/824@en-phone)

exten =&gt; 800,1,NoOp(Local pickup: Pickup through Localchan call)
exten =&gt; 800,n,Dial(Local/824@en-pickup&amp;Local/823@en-pickup)

[en-pickup]
exten =&gt; _[0-9*#]!, 1, PickupChan(Local/${EXTEN}@en-phone)

[en-phone]
exten =&gt; _[0-9*#]!, 1, Dial(SIP/gxp-${EXTEN},20,rwt)

will remove red blobs, and perhaps ast_pickup_active() test.</pre>
  </td>
 </tr>
</table>




<div style="margin-top: 1.5em;">
 <b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>


 <a href="https://issues.asterisk.org/jira/browse/ASTERISK-18222">ASTERISK-18222</a>


</div>


<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">

 <li>trunk/include/asterisk/channelstate.h <span style="color: grey">(330704)</span></li>

 <li>trunk/include/asterisk/features.h <span style="color: grey">(330704)</span></li>

 <li>trunk/main/channel.c <span style="color: grey">(330704)</span></li>

 <li>trunk/main/features.c <span style="color: grey">(330704)</span></li>

</ul>

<p><a href="https://reviewboard.asterisk.org/r/1353/diff/" style="margin-left: 3em;">View Diff</a></p>




  </td>
 </tr>
</table>








  </div>
 </body>
</html>