<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 - sprintf optimised to stpcpy breaks linux kernel build"
href="https://bugs.llvm.org/show_bug.cgi?id=47481">47481</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>sprintf optimised to stpcpy breaks linux kernel build
</td>
</tr>
<tr>
<th>Product</th>
<td>libraries
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</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>Scalar Optimizations
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>oliver.stannard@arm.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>After <a href="https://reviews.llvm.org/rG6dbf0cfc">https://reviews.llvm.org/rG6dbf0cfc</a> (re-landed as
<a href="https://reviews.llvm.org/rGf134fc4f">https://reviews.llvm.org/rGf134fc4f</a>), we are optimising some sprintf calls into
stpcpy calls. sprintf is a part of standard C, but stpcpy is a posix function.
This is breaking our linux kernel builds, because that does not have an
implementation of stpcpy. Currently, our builds are using
--target=arm-linux-gnueabihf, which arguably should allow this transformation
because it is also used for user-space programs. However, this does appear to
be the standard way to build the linux kernel for ARM, and llvm also does the
transformation with --target=arm-none-gnueabihf.</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>