<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang frontend crash due to an exponential complexity of typo corrector"
href="https://bugs.llvm.org/show_bug.cgi?id=44580">44580</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang frontend crash due to an exponential complexity of typo corrector
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>RudenkoRNK@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=23023" name="attach_23023" title="typos.cpp from description">attachment 23023</a> <a href="attachment.cgi?id=23023&action=edit" title="typos.cpp from description">[details]</a></span>
typos.cpp from description
Compiling typos.cpp ends with an "LLVM ERROR: out of memory"
typos.cpp is a very simple file with n=10 int definitions and a function call
with n arguments.
When clang analyzes this file it tries to correct typos in it. In order to do
this it calls method
clangSema::SemaExprCXX.cpp::CheckAndAdvanceTypoExprCorrectionStreams
The problem is that amount of calls is around 8^(n-1), which leads to a crash
or infinitely long waiting time.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>