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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [META] Fix errors in UBSan bootstrap of LLVM/Clang"
href="http://llvm.org/bugs/show_bug.cgi?id=20815">20815</a>
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<th>Summary</th>
<td>[META] Fix errors in UBSan bootstrap of LLVM/Clang
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<th>Product</th>
<td>new-bugs
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>new bugs
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>vonosmas@gmail.com
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, richard-llvm@metafoo.co.uk
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>I've recently added bootstrap of LLVM/Clang with UBSan to the
sanitizer-x86_64-linux-boostrap buildbot:
<a href="http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap">http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap</a>
You can try it on your machine by passing just-built Clang as a host compiler
and -DLLVM_USE_SANITIZER=Undefined option to CMake.
Currently both check-llvm and check-clang test suites have failing tests:
<a href="http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/4368/steps/check-llvm%20ubsan/logs/stdio">http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/4368/steps/check-llvm%20ubsan/logs/stdio</a>
<a href="http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/4368/steps/check-clang%20ubsan/logs/stdio">http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/4368/steps/check-clang%20ubsan/logs/stdio</a>
A lot of LLVM failures will be fixed once:
1) <a href="http://reviews.llvm.org/D4976">http://reviews.llvm.org/D4976</a> lands (reviewers are welcome!)
2) jit_exit function in lib/ExecutionEngine/JIT/JITMemoryManager.cpp is defined
to return int to pacify function type sanitizer (if it's an appropriate fix).
There is a not-so-long tail of remaining issues there. I'd be grateful if you
can take a look and/or fix some of them.</pre>
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