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<base href="https://bugs.webkit.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - WTF::AutomaticThread crashes on certain sites"
href="https://bugs.webkit.org/show_bug.cgi?id=164327">164327</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>WTF::AutomaticThread crashes on certain sites
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>Product</th>
<td>WebKit
</td>
</tr>
<tr>
<th>Version</th>
<td>Safari Technology Preview
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</td>
</tr>
<tr>
<th>OS</th>
<td>macOS 10.12
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>Normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>JavaScriptCore
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>dieter@komendera.com
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=293671" name="attach_293671" title="crash log">attachment 293671</a> <a href="attachment.cgi?id=293671&action=edit" title="crash log">[details]</a></span>
crash log
URL: <a href="https://travis-ci.org/rails/rails/jobs/172644765">https://travis-ci.org/rails/rails/jobs/172644765</a>
macOS 10.12.1 (16B2555)
STP Release 16 (Safari 10.1, WebKit 12603.1.10)
Steps to reproduce:
* go to the URL above
Crashed Thread: 11 WTF::AutomaticThread
Thread 11 Crashed:: WTF::AutomaticThread
0 com.apple.JavaScriptCore 0x00000001030fa08c JSC::DFG::ByteCodeParser::getPredictionWithoutOSRExit(unsigned int) + 620
1 com.apple.JavaScriptCore 0x00000001030ecdeb JSC::DFG::ByteCodeParser::handleCall(int, JSC::DFG::NodeType, JSC::CallMode, unsigned int, JSC::DFG::Node*, int, int, JSC::CallLinkStatus) + 379
2 com.apple.JavaScriptCore 0x00000001030ec56d JSC::DFG::ByteCodeParser::handleCall(int, JSC::DFG::NodeType, JSC::CallMode, unsigned int, int, int, int) + 429
3 com.apple.JavaScriptCore 0x0000000102d7acca JSC::DFG::ByteCodeParser::parseBlock(unsigned int) + 6698
4 com.apple.JavaScriptCore 0x0000000102d7902b JSC::DFG::ByteCodeParser::parseCodeBlock() + 1243
5 com.apple.JavaScriptCore 0x000000010310090a void</pre>
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