<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-tidy suspicious-memset-usage does not warn about `memset(dest, fill_value, 0)`"
href="https://bugs.llvm.org/show_bug.cgi?id=38098">38098</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang-tidy suspicious-memset-usage does not warn about `memset(dest, fill_value, 0)`
</td>
</tr>
<tr>
<th>Product</th>
<td>new-bugs
</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>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>new bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cpeterson@mozilla.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>clang-tidy's "bugprone-suspicious-memset-usage" check warns about `memset(dest,
sizeof(int), 0)` but does not warn for `memset(dest, 8, 0)` because the
statement does not include sizeof().
#include <string.h>
void test(int *dest)
{
memset(dest, sizeof(int), 0); // WARNING as expected
memset(dest, 8, 0); // NO WARNING even with hard-coded zero length?!
}
clang-tidy --checks="-*,bugprone-suspicious-memset-usage"
suspicious-memset-usage.cpp
<a href="https://clang.llvm.org/extra/clang-tidy/checks/bugprone-suspicious-memset-usage.html">https://clang.llvm.org/extra/clang-tidy/checks/bugprone-suspicious-memset-usage.html</a></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>