<html>
<head>
<base href="https://bugs.freedesktop.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 static analysis of libtess shows undefined values and use of memory after free"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91631">91631</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang static analysis of libtess shows undefined values and use of memory after free
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>GLU
</td>
</tr>
<tr>
<th>Assignee</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>net147@gmail.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>mesa-dev@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Using static analyzer included in clang 3.6.2:
$ ./autogen.sh
$ ./configure
$ scan-build make
CC src/libtess/dict.lo
CC src/libtess/geom.lo
CC src/libtess/memalloc.lo
CC src/libtess/mesh.lo
CC src/libtess/normal.lo
src/libtess/normal.c:112:6: warning: Assigned value is garbage or undefined
v1 = minVert[i];
^ ~~~~~~~~~~
src/libtess/normal.c:113:6: warning: Assigned value is garbage or undefined
v2 = maxVert[i];
^ ~~~~~~~~~~
2 warnings generated.
CC src/libtess/priorityq.lo
CC src/libtess/render.lo
CC src/libtess/sweep.lo
src/libtess/sweep.c:779:11: warning: Use of memory after it is freed
if( ! regUp->dirty ) {
^~~~~~~~~~~~
src/libtess/sweep.c:803:10: warning: Use of memory after it is freed
eLo = regLo->eUp;
^~~~~~~~~~
src/libtess/sweep.c:808:10: warning: Use of memory after it is freed
eUp = regUp->eUp;
^~~~~~~~~~
3 warnings generated.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are the QA Contact for the bug.</li>
<li>You are the assignee for the bug.</li>
</ul>
</body>
</html>