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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Coroutine optimization change returned value when using proxy type"
href="https://bugs.llvm.org/show_bug.cgi?id=39764">39764</a>
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<th>Summary</th>
<td>Coroutine optimization change returned value when using proxy type
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++2a
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>sidney.congard@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>I implemented a minimal promise type which returns a proxy converted to the
promise's member value when it's returned from the coroutine. This member value
is set by 'co_return' (by implementing 'return_value').
Some optimization seems to elide the local value, so the value set by calling
'co_return' is not returned :
<a href="https://wandbox.org/permlink/MdMuxwTjZdmM9xVi">https://wandbox.org/permlink/MdMuxwTjZdmM9xVi</a></pre>
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