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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang generates incorrect code with simultaneously turned on cfi and bti"
href="https://bugs.llvm.org/show_bug.cgi?id=48845">48845</a>
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<th>Summary</th>
<td>clang generates incorrect code with simultaneously turned on cfi and bti
</td>
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>11.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>new bugs
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>qwertytmp1@gmail.com
</td>
</tr>
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<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>It was found that Clang generates cfi jumptables without a landing pad ("bti"
instructions) at the beginning, even in case when the code was compiled with
"-mbranch-protection=bti".
Latest Clang 11.0.1 from:
- <a href="https://releases.llvm.org/download.html">https://releases.llvm.org/download.html</a>
was used to check this issue.
At the same time, it seems that the following patch:
- <a href="https://reviews.llvm.org/D81251">https://reviews.llvm.org/D81251</a>
solves the problem.
Probably to solve this issue the mentioned patch
(<a href="https://reviews.llvm.org/D81251">https://reviews.llvm.org/D81251</a>)
is need be taken for the next Clang release.</pre>
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