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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - crash when compiling coroutine with fsanitize=undefined"
href="https://bugs.llvm.org/show_bug.cgi?id=41848">41848</a>
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<th>Summary</th>
<td>crash when compiling coroutine with fsanitize=undefined
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>8.0
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Linux
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<th>Status</th>
<td>NEW
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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>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>adi@thingdust.com
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Created <span class=""><a href="attachment.cgi?id=21933" name="attach_21933" title="minimal reproducing example">attachment 21933</a> <a href="attachment.cgi?id=21933&action=edit" title="minimal reproducing example">[details]</a></span>
minimal reproducing example
A minimal example can be found in test.cpp.
The undefined behaviour sanitizer somehow inserts code into a seemingly simple
function which causes a "cannot move instruction since its users are not
dominated by CoroBegin" compilation failure.
Compile with clang++ -std=c++17 -fcoroutines-ts -fsanitize=undefined -c
test.cpp</pre>
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